Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

125 files changed, 29535 insertions, 0 deletions

diff --git a/vendor/rustix/src/imp/libc/conv.rs b/vendor/rustix/src/imp/libc/conv.rs
new file mode 100644
index 000000000..fed15fbd1
--- /dev/null
+++ b/vendor/rustix/src/imp/libc/conv.rs
@@ -0,0 +1,220 @@
+//! Libc call arguments and return values are often things like `c_int`,
+//! `c_uint`, or libc-specific pointer types. This module provides functions
+//! for converting between rustix's types and libc types.
+
+#![allow(dead_code)]
+
+use super::c;
+use super::fd::{AsRawFd, BorrowedFd, FromRawFd, IntoRawFd, LibcFd, RawFd};
+#[cfg(not(windows))]
+use super::offset::libc_off_t;
+#[cfg(not(windows))]
+use crate::ffi::CStr;
+use crate::io::{self, OwnedFd};
+#[cfg(windows)]
+use core::convert::TryInto;
+
+#[cfg(not(windows))]
+#[inline]
+pub(super) fn c_str(c: &CStr) -> *const c::c_char {
+    c.as_ptr()
+}
+
+#[cfg(not(windows))]
+#[inline]
+pub(super) fn no_fd() -> LibcFd {
+    -1
+}
+
+#[inline]
+pub(super) fn borrowed_fd(fd: BorrowedFd<'_>) -> LibcFd {
+    fd.as_raw_fd() as LibcFd
+}
+
+#[inline]
+pub(super) fn owned_fd(fd: OwnedFd) -> LibcFd {
+    fd.into_raw_fd() as LibcFd
+}
+
+#[inline]
+pub(super) fn ret(raw: c::c_int) -> io::Result<()> {
+    if raw == 0 {
+        Ok(())
+    } else {
+        Err(io::Errno::last_os_error())
+    }
+}
+
+#[inline]
+pub(super) fn syscall_ret(raw: c::c_long) -> io::Result<()> {
+    if raw == 0 {
+        Ok(())
+    } else {
+        Err(io::Errno::last_os_error())
+    }
+}
+
+#[inline]
+pub(super) fn nonnegative_ret(raw: c::c_int) -> io::Result<()> {
+    if raw >= 0 {
+        Ok(())
+    } else {
+        Err(io::Errno::last_os_error())
+    }
+}
+
+#[inline]
+pub(super) unsafe fn ret_infallible(raw: c::c_int) {
+    debug_assert_eq!(raw, 0, "unexpected error: {:?}", io::Errno::last_os_error());
+}
+
+#[inline]
+pub(super) fn ret_c_int(raw: c::c_int) -> io::Result<c::c_int> {
+    if raw == -1 {
+        Err(io::Errno::last_os_error())
+    } else {
+        Ok(raw)
+    }
+}
+
+#[inline]
+pub(super) fn ret_u32(raw: c::c_int) -> io::Result<u32> {
+    if raw == -1 {
+        Err(io::Errno::last_os_error())
+    } else {
+        Ok(raw as u32)
+    }
+}
+
+#[inline]
+pub(super) fn ret_ssize_t(raw: c::ssize_t) -> io::Result<c::ssize_t> {
+    if raw == -1 {
+        Err(io::Errno::last_os_error())
+    } else {
+        Ok(raw)
+    }
+}
+
+#[inline]
+pub(super) fn syscall_ret_ssize_t(raw: c::c_long) -> io::Result<c::ssize_t> {
+    if raw == -1 {
+        Err(io::Errno::last_os_error())
+    } else {
+        Ok(raw as c::ssize_t)
+    }
+}
+
+#[cfg(any(target_os = "android", target_os = "linux"))]
+#[inline]
+pub(super) fn syscall_ret_u32(raw: c::c_long) -> io::Result<u32> {
+    if raw == -1 {
+        Err(io::Errno::last_os_error())
+    } else {
+        let r32 = raw as u32;
+
+        // Converting `raw` to `u32` should be lossless.
+        debug_assert_eq!(r32 as c::c_long, raw);
+
+        Ok(r32)
+    }
+}
+
+#[cfg(not(windows))]
+#[inline]
+pub(super) fn ret_off_t(raw: libc_off_t) -> io::Result<libc_off_t> {
+    if raw == -1 {
+        Err(io::Errno::last_os_error())
+    } else {
+        Ok(raw)
+    }
+}
+
+#[cfg(not(windows))]
+#[inline]
+pub(super) fn ret_pid_t(raw: c::pid_t) -> io::Result<c::pid_t> {
+    if raw == -1 {
+        Err(io::Errno::last_os_error())
+    } else {
+        Ok(raw)
+    }
+}
+
+/// Convert a `c_int` returned from a libc function to an `OwnedFd`, if valid.
+///
+/// # Safety
+///
+/// The caller must ensure that this is the return value of a libc function
+/// which returns an owned file descriptor.
+#[inline]
+pub(super) unsafe fn ret_owned_fd(raw: LibcFd) -> io::Result<OwnedFd> {
+    if raw == !0 {
+        Err(io::Errno::last_os_error())
+    } else {
+        Ok(OwnedFd::from_raw_fd(raw as RawFd))
+    }
+}
+
+#[inline]
+pub(super) fn ret_discarded_fd(raw: LibcFd) -> io::Result<()> {
+    if raw == !0 {
+        Err(io::Errno::last_os_error())
+    } else {
+        Ok(())
+    }
+}
+
+#[inline]
+pub(super) fn ret_discarded_char_ptr(raw: *mut c::c_char) -> io::Result<()> {
+    if raw.is_null() {
+        Err(io::Errno::last_os_error())
+    } else {
+        Ok(())
+    }
+}
+
+/// Convert a `c_long` returned from `syscall` to an `OwnedFd`, if valid.
+///
+/// # Safety
+///
+/// The caller must ensure that this is the return value of a `syscall` call
+/// which returns an owned file descriptor.
+#[cfg(not(windows))]
+#[inline]
+pub(super) unsafe fn syscall_ret_owned_fd(raw: c::c_long) -> io::Result<OwnedFd> {
+    if raw == -1 {
+        Err(io::Errno::last_os_error())
+    } else {
+        Ok(OwnedFd::from_raw_fd(raw as RawFd))
+    }
+}
+
+/// Convert the buffer-length argument value of a `send` or `recv` call.
+#[cfg(not(windows))]
+#[inline]
+pub(super) fn send_recv_len(len: usize) -> usize {
+    len
+}
+
+/// Convert the buffer-length argument value of a `send` or `recv` call.
+#[cfg(windows)]
+#[inline]
+pub(super) fn send_recv_len(len: usize) -> i32 {
+    // On Windows, the length argument has type `i32`; saturate the length,
+    // since `send` and `recv` are allowed to send and recv less data than
+    // requested.
+    len.try_into().unwrap_or(i32::MAX)
+}
+
+/// Convert the return value of a `send` or `recv` call.
+#[cfg(not(windows))]
+#[inline]
+pub(super) fn ret_send_recv(len: isize) -> io::Result<c::ssize_t> {
+    ret_ssize_t(len)
+}
+
+/// Convert the return value of a `send` or `recv` call.
+#[cfg(windows)]
+#[inline]
+pub(super) fn ret_send_recv(len: i32) -> io::Result<c::ssize_t> {
+    ret_ssize_t(len as isize)
+}
diff --git a/vendor/rustix/src/imp/libc/fs/dir.rs b/vendor/rustix/src/imp/libc/fs/dir.rs
new file mode 100644
index 000000000..1e6b6066f
--- /dev/null
+++ b/vendor/rustix/src/imp/libc/fs/dir.rs
@@ -0,0 +1,402 @@
+use super::super::c;
+use super::super::conv::owned_fd;
+#[cfg(not(target_os = "illumos"))]
+use super::types::FileType;
+use crate::fd::{AsFd, BorrowedFd};
+use crate::ffi::CStr;
+#[cfg(target_os = "wasi")]
+use crate::ffi::CString;
+use crate::fs::{fcntl_getfl, fstat, openat, Mode, OFlags, Stat};
+#[cfg(not(any(
+    target_os = "illumos",
+    target_os = "netbsd",
+    target_os = "redox",
+    target_os = "wasi",
+)))] // not implemented in libc for netbsd yet
+use crate::fs::{fstatfs, StatFs};
+use crate::io;
+#[cfg(not(any(target_os = "fuchsia", target_os = "wasi")))]
+use crate::process::fchdir;
+#[cfg(target_os = "wasi")]
+use alloc::borrow::ToOwned;
+#[cfg(not(any(
+    target_os = "android",
+    target_os = "emscripten",
+    target_os = "l4re",
+    target_os = "linux",
+    target_os = "openbsd",
+)))]
+use c::dirent as libc_dirent;
+#[cfg(not(any(
+    target_os = "android",
+    target_os = "emscripten",
+    target_os = "l4re",
+    target_os = "linux",
+)))]
+use c::readdir as libc_readdir;
+#[cfg(any(
+    target_os = "android",
+    target_os = "emscripten",
+    target_os = "l4re",
+    target_os = "linux",
+))]
+use c::{dirent64 as libc_dirent, readdir64 as libc_readdir};
+use core::fmt;
+use core::mem::zeroed;
+use core::ptr::NonNull;
+use libc_errno::{errno, set_errno, Errno};
+
+/// `DIR*`
+#[repr(transparent)]
+pub struct Dir(NonNull<c::DIR>);
+
+impl Dir {
+    /// Construct a `Dir` that reads entries from the given directory
+    /// file descriptor.
+    #[inline]
+    pub fn read_from<Fd: AsFd>(fd: Fd) -> io::Result<Self> {
+        Self::_read_from(fd.as_fd())
+    }
+
+    #[inline]
+    fn _read_from(fd: BorrowedFd<'_>) -> io::Result<Self> {
+        // Given an arbitrary `OwnedFd`, it's impossible to know whether the
+        // user holds a `dup`'d copy which could continue to modify the
+        // file description state, which would cause Undefined Behavior after
+        // our call to `fdopendir`. To prevent this, we obtain an independent
+        // `OwnedFd`.
+        let flags = fcntl_getfl(&fd)?;
+        let fd_for_dir = openat(&fd, cstr!("."), flags | OFlags::CLOEXEC, Mode::empty())?;
+
+        let raw = owned_fd(fd_for_dir);
+        unsafe {
+            let libc_dir = c::fdopendir(raw);
+
+            if let Some(libc_dir) = NonNull::new(libc_dir) {
+                Ok(Self(libc_dir))
+            } else {
+                let e = io::Errno::last_os_error();
+                let _ = c::close(raw);
+                Err(e)
+            }
+        }
+    }
+
+    /// `rewinddir(self)`
+    #[inline]
+    pub fn rewind(&mut self) {
+        unsafe { c::rewinddir(self.0.as_ptr()) }
+    }
+
+    /// `readdir(self)`, where `None` means the end of the directory.
+    pub fn read(&mut self) -> Option<io::Result<DirEntry>> {
+        set_errno(Errno(0));
+        let dirent_ptr = unsafe { libc_readdir(self.0.as_ptr()) };
+        if dirent_ptr.is_null() {
+            let curr_errno = errno().0;
+            if curr_errno == 0 {
+                // We successfully reached the end of the stream.
+                None
+            } else {
+                // `errno` is unknown or non-zero, so an error occurred.
+                Some(Err(io::Errno(curr_errno)))
+            }
+        } else {
+            // We successfully read an entry.
+            unsafe {
+                // We have our own copy of OpenBSD's dirent; check that the
+                // layout minimally matches libc's.
+                #[cfg(target_os = "openbsd")]
+                check_dirent_layout(&*dirent_ptr);
+
+                let result = DirEntry {
+                    dirent: read_dirent(&*dirent_ptr.cast()),
+
+                    #[cfg(target_os = "wasi")]
+                    name: CStr::from_ptr((*dirent_ptr).d_name.as_ptr()).to_owned(),
+                };
+
+                Some(Ok(result))
+            }
+        }
+    }
+
+    /// `fstat(self)`
+    #[inline]
+    pub fn stat(&self) -> io::Result<Stat> {
+        fstat(unsafe { BorrowedFd::borrow_raw(c::dirfd(self.0.as_ptr())) })
+    }
+
+    /// `fstatfs(self)`
+    #[cfg(not(any(
+        target_os = "illumos",
+        target_os = "netbsd",
+        target_os = "redox",
+        target_os = "wasi",
+    )))] // not implemented in libc for netbsd yet
+    #[inline]
+    pub fn statfs(&self) -> io::Result<StatFs> {
+        fstatfs(unsafe { BorrowedFd::borrow_raw(c::dirfd(self.0.as_ptr())) })
+    }
+
+    /// `fchdir(self)`
+    #[cfg(not(any(target_os = "fuchsia", target_os = "wasi")))]
+    #[inline]
+    pub fn chdir(&self) -> io::Result<()> {
+        fchdir(unsafe { BorrowedFd::borrow_raw(c::dirfd(self.0.as_ptr())) })
+    }
+}
+
+// A `dirent` pointer returned from `readdir` may not point to a full `dirent`
+// struct, as the name is NUL-terminated and memory may not be allocated for
+// the full extent of the struct. Copy the fields one at a time.
+unsafe fn read_dirent(input: &libc_dirent) -> libc_dirent {
+    #[cfg(not(target_os = "illumos"))]
+    let d_type = input.d_type;
+
+    #[cfg(not(any(
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "wasi",
+    )))]
+    let d_off = input.d_off;
+
+    #[cfg(not(any(
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    )))]
+    let d_ino = input.d_ino;
+
+    #[cfg(any(target_os = "freebsd", target_os = "netbsd", target_os = "openbsd"))]
+    let d_fileno = input.d_fileno;
+
+    #[cfg(not(target_os = "wasi"))]
+    let d_reclen = input.d_reclen;
+
+    #[cfg(any(
+        target_os = "freebsd",
+        target_os = "netbsd",
+        target_os = "openbsd",
+        target_os = "ios",
+        target_os = "macos",
+    ))]
+    let d_namlen = input.d_namlen;
+
+    #[cfg(any(target_os = "ios", target_os = "macos"))]
+    let d_seekoff = input.d_seekoff;
+
+    // Construct the input. Rust will give us an error if any OS has a input
+    // with a field that we missed here. And we can avoid blindly copying the
+    // whole `d_name` field, which may not be entirely allocated.
+    #[cfg_attr(target_os = "wasi", allow(unused_mut))]
+    let mut dirent = libc_dirent {
+        #[cfg(not(target_os = "illumos"))]
+        d_type,
+        #[cfg(not(any(
+            target_os = "dragonfly",
+            target_os = "freebsd",
+            target_os = "ios",
+            target_os = "macos",
+            target_os = "netbsd",
+            target_os = "wasi",
+        )))]
+        d_off,
+        #[cfg(not(any(
+            target_os = "dragonfly",
+            target_os = "freebsd",
+            target_os = "netbsd",
+            target_os = "openbsd",
+        )))]
+        d_ino,
+        #[cfg(any(target_os = "freebsd", target_os = "netbsd", target_os = "openbsd"))]
+        d_fileno,
+        #[cfg(not(target_os = "wasi"))]
+        d_reclen,
+        #[cfg(any(
+            target_os = "freebsd",
+            target_os = "ios",
+            target_os = "macos",
+            target_os = "netbsd",
+            target_os = "openbsd",
+        ))]
+        d_namlen,
+        #[cfg(any(target_os = "ios", target_os = "macos"))]
+        d_seekoff,
+        // The `d_name` field is NUL-terminated, and we need to be careful not
+        // to read bytes past the NUL, even though they're within the nominal
+        // extent of the `struct dirent`, because they may not be allocated. So
+        // don't read it from `dirent_ptr`.
+        //
+        // In theory this could use `MaybeUninit::uninit().assume_init()`, but
+        // that [invokes undefined behavior].
+        //
+        // [invokes undefined behavior]: https://doc.rust-lang.org/stable/core/mem/union.MaybeUninit.html#initialization-invariant
+        d_name: zeroed(),
+        #[cfg(target_os = "openbsd")]
+        __d_padding: zeroed(),
+    };
+
+    // Copy from d_name, reading up to and including the first NUL.
+    #[cfg(not(target_os = "wasi"))]
+    {
+        let name_len = CStr::from_ptr(input.d_name.as_ptr())
+            .to_bytes_with_nul()
+            .len();
+        dirent.d_name[..name_len].copy_from_slice(&input.d_name[..name_len]);
+    }
+
+    dirent
+}
+
+/// `Dir` implements `Send` but not `Sync`, because we use `readdir` which is
+/// not guaranteed to be thread-safe. Users can wrap this in a `Mutex` if they
+/// need `Sync`, which is effectively what'd need to do to implement `Sync`
+/// ourselves.
+unsafe impl Send for Dir {}
+
+impl Drop for Dir {
+    #[inline]
+    fn drop(&mut self) {
+        unsafe { c::closedir(self.0.as_ptr()) };
+    }
+}
+
+impl Iterator for Dir {
+    type Item = io::Result<DirEntry>;
+
+    #[inline]
+    fn next(&mut self) -> Option<Self::Item> {
+        Self::read(self)
+    }
+}
+
+impl fmt::Debug for Dir {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        f.debug_struct("Dir")
+            .field("fd", unsafe { &c::dirfd(self.0.as_ptr()) })
+            .finish()
+    }
+}
+
+/// `struct dirent`
+#[derive(Debug)]
+pub struct DirEntry {
+    dirent: libc_dirent,
+
+    #[cfg(target_os = "wasi")]
+    name: CString,
+}
+
+impl DirEntry {
+    /// Returns the file name of this directory entry.
+    #[inline]
+    pub fn file_name(&self) -> &CStr {
+        #[cfg(not(target_os = "wasi"))]
+        unsafe {
+            CStr::from_ptr(self.dirent.d_name.as_ptr())
+        }
+
+        #[cfg(target_os = "wasi")]
+        &self.name
+    }
+
+    /// Returns the type of this directory entry.
+    #[cfg(not(target_os = "illumos"))]
+    #[inline]
+    pub fn file_type(&self) -> FileType {
+        FileType::from_dirent_d_type(self.dirent.d_type)
+    }
+
+    /// Return the inode number of this directory entry.
+    #[cfg(not(any(
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    )))]
+    #[inline]
+    pub fn ino(&self) -> u64 {
+        self.dirent.d_ino
+    }
+
+    /// Return the inode number of this directory entry.
+    #[cfg(any(
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    ))]
+    #[inline]
+    pub fn ino(&self) -> u64 {
+        #[allow(clippy::useless_conversion)]
+        self.dirent.d_fileno.into()
+    }
+}
+
+/// libc's OpenBSD `dirent` has a private field so we can't construct it
+/// directly, so we declare it ourselves to make all fields accessible.
+#[cfg(target_os = "openbsd")]
+#[repr(C)]
+#[derive(Debug)]
+struct libc_dirent {
+    d_fileno: c::ino_t,
+    d_off: c::off_t,
+    d_reclen: u16,
+    d_type: u8,
+    d_namlen: u8,
+    __d_padding: [u8; 4],
+    d_name: [c::c_char; 256],
+}
+
+/// We have our own copy of OpenBSD's dirent; check that the layout
+/// minimally matches libc's.
+#[cfg(target_os = "openbsd")]
+fn check_dirent_layout(dirent: &c::dirent) {
+    use crate::utils::as_ptr;
+    use core::mem::{align_of, size_of};
+
+    // Check that the basic layouts match.
+    assert_eq!(size_of::<libc_dirent>(), size_of::<c::dirent>());
+    assert_eq!(align_of::<libc_dirent>(), align_of::<c::dirent>());
+
+    // Check that the field offsets match.
+    assert_eq!(
+        {
+            let z = libc_dirent {
+                d_fileno: 0_u64,
+                d_off: 0_i64,
+                d_reclen: 0_u16,
+                d_type: 0_u8,
+                d_namlen: 0_u8,
+                __d_padding: [0_u8; 4],
+                d_name: [0 as c::c_char; 256],
+            };
+            let base = as_ptr(&z) as usize;
+            (
+                (as_ptr(&z.d_fileno) as usize) - base,
+                (as_ptr(&z.d_off) as usize) - base,
+                (as_ptr(&z.d_reclen) as usize) - base,
+                (as_ptr(&z.d_type) as usize) - base,
+                (as_ptr(&z.d_namlen) as usize) - base,
+                (as_ptr(&z.d_name) as usize) - base,
+            )
+        },
+        {
+            let z = dirent;
+            let base = as_ptr(z) as usize;
+            (
+                (as_ptr(&z.d_fileno) as usize) - base,
+                (as_ptr(&z.d_off) as usize) - base,
+                (as_ptr(&z.d_reclen) as usize) - base,
+                (as_ptr(&z.d_type) as usize) - base,
+                (as_ptr(&z.d_namlen) as usize) - base,
+                (as_ptr(&z.d_name) as usize) - base,
+            )
+        }
+    );
+}
diff --git a/vendor/rustix/src/imp/libc/fs/makedev.rs b/vendor/rustix/src/imp/libc/fs/makedev.rs
new file mode 100644
index 000000000..d9089e7f4
--- /dev/null
+++ b/vendor/rustix/src/imp/libc/fs/makedev.rs
@@ -0,0 +1,90 @@
+#[cfg(not(all(target_os = "android", target_pointer_width = "32")))]
+use super::super::c;
+use crate::fs::Dev;
+
+#[cfg(not(any(target_os = "android", target_os = "emscripten")))]
+#[inline]
+pub(crate) fn makedev(maj: u32, min: u32) -> Dev {
+    unsafe { c::makedev(maj, min) }
+}
+
+#[cfg(all(target_os = "android", not(target_pointer_width = "32")))]
+#[inline]
+pub(crate) fn makedev(maj: u32, min: u32) -> Dev {
+    // Android's `makedev` oddly has signed argument types.
+    unsafe { c::makedev(maj as i32, min as i32) }
+}
+
+#[cfg(all(target_os = "android", target_pointer_width = "32"))]
+#[inline]
+pub(crate) fn makedev(maj: u32, min: u32) -> Dev {
+    // 32-bit Android's `dev_t` is 32-bit, but its `st_dev` is 64-bit,
+    // so we do it ourselves.
+    ((u64::from(maj) & 0xffff_f000_u64) << 32)
+        | ((u64::from(maj) & 0x0000_0fff_u64) << 8)
+        | ((u64::from(min) & 0xffff_ff00_u64) << 12)
+        | (u64::from(min) & 0x0000_00ff_u64)
+}
+
+#[cfg(target_os = "emscripten")]
+#[inline]
+pub(crate) fn makedev(maj: u32, min: u32) -> Dev {
+    // Emscripten's `makedev` has a 32-bit return value.
+    Dev::from(unsafe { c::makedev(maj, min) })
+}
+
+#[cfg(not(any(target_os = "android", target_os = "emscripten")))]
+#[inline]
+pub(crate) fn major(dev: Dev) -> u32 {
+    unsafe { c::major(dev) }
+}
+
+#[cfg(all(target_os = "android", not(target_pointer_width = "32")))]
+#[inline]
+pub(crate) fn major(dev: Dev) -> u32 {
+    // Android's `major` oddly has signed return types.
+    (unsafe { c::major(dev) }) as u32
+}
+
+#[cfg(all(target_os = "android", target_pointer_width = "32"))]
+#[inline]
+pub(crate) fn major(dev: Dev) -> u32 {
+    // 32-bit Android's `dev_t` is 32-bit, but its `st_dev` is 64-bit,
+    // so we do it ourselves.
+    (((dev >> 31 >> 1) & 0xffff_f000) | ((dev >> 8) & 0x0000_0fff)) as u32
+}
+
+#[cfg(target_os = "emscripten")]
+#[inline]
+pub(crate) fn major(dev: Dev) -> u32 {
+    // Emscripten's `major` has a 32-bit argument value.
+    unsafe { c::major(dev as u32) }
+}
+
+#[cfg(not(any(target_os = "android", target_os = "emscripten")))]
+#[inline]
+pub(crate) fn minor(dev: Dev) -> u32 {
+    unsafe { c::minor(dev) }
+}
+
+#[cfg(all(target_os = "android", not(target_pointer_width = "32")))]
+#[inline]
+pub(crate) fn minor(dev: Dev) -> u32 {
+    // Android's `minor` oddly has signed return types.
+    (unsafe { c::minor(dev) }) as u32
+}
+
+#[cfg(all(target_os = "android", target_pointer_width = "32"))]
+#[inline]
+pub(crate) fn minor(dev: Dev) -> u32 {
+    // 32-bit Android's `dev_t` is 32-bit, but its `st_dev` is 64-bit,
+    // so we do it ourselves.
+    (((dev >> 12) & 0xffff_ff00) | (dev & 0x0000_00ff)) as u32
+}
+
+#[cfg(target_os = "emscripten")]
+#[inline]
+pub(crate) fn minor(dev: Dev) -> u32 {
+    // Emscripten's `minor` has a 32-bit argument value.
+    unsafe { c::minor(dev as u32) }
+}
diff --git a/vendor/rustix/src/imp/libc/fs/mod.rs b/vendor/rustix/src/imp/libc/fs/mod.rs
new file mode 100644
index 000000000..02b7b2d6a
--- /dev/null
+++ b/vendor/rustix/src/imp/libc/fs/mod.rs
@@ -0,0 +1,18 @@
+#[cfg(not(target_os = "redox"))]
+#[cfg(any(feature = "fs", feature = "procfs"))]
+pub(crate) mod dir;
+#[cfg(not(any(
+    target_os = "dragonfly",
+    target_os = "freebsd",
+    target_os = "illumos",
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "netbsd",
+    target_os = "openbsd",
+    target_os = "redox",
+    target_os = "wasi",
+)))]
+pub(crate) mod makedev;
+#[cfg(not(windows))]
+pub(crate) mod syscalls;
+pub(crate) mod types;
diff --git a/vendor/rustix/src/imp/libc/fs/syscalls.rs b/vendor/rustix/src/imp/libc/fs/syscalls.rs
new file mode 100644
index 000000000..0317367ab
--- /dev/null
+++ b/vendor/rustix/src/imp/libc/fs/syscalls.rs
@@ -0,0 +1,1670 @@
+//! libc syscalls supporting `rustix::fs`.
+
+use super::super::c;
+use super::super::conv::{
+    borrowed_fd, c_str, ret, ret_c_int, ret_off_t, ret_owned_fd, ret_ssize_t,
+};
+#[cfg(any(target_os = "android", target_os = "linux"))]
+use super::super::conv::{syscall_ret, syscall_ret_owned_fd, syscall_ret_ssize_t};
+#[cfg(any(target_os = "android", target_os = "fuchsia", target_os = "linux"))]
+use super::super::offset::libc_fallocate;
+#[cfg(not(any(
+    target_os = "dragonfly",
+    target_os = "illumos",
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "netbsd",
+    target_os = "openbsd",
+    target_os = "redox",
+)))]
+use super::super::offset::libc_posix_fadvise;
+#[cfg(not(any(
+    target_os = "android",
+    target_os = "dragonfly",
+    target_os = "fuchsia",
+    target_os = "illumos",
+    target_os = "ios",
+    target_os = "linux",
+    target_os = "macos",
+    target_os = "netbsd",
+    target_os = "openbsd",
+    target_os = "redox",
+)))]
+use super::super::offset::libc_posix_fallocate;
+use super::super::offset::{libc_fstat, libc_fstatat, libc_ftruncate, libc_lseek, libc_off_t};
+#[cfg(not(any(
+    target_os = "illumos",
+    target_os = "netbsd",
+    target_os = "redox",
+    target_os = "wasi",
+)))]
+use super::super::offset::{libc_fstatfs, libc_statfs};
+#[cfg(all(
+    any(target_arch = "arm", target_arch = "mips", target_arch = "x86"),
+    target_env = "gnu",
+))]
+use super::super::time::types::LibcTimespec;
+use crate::fd::BorrowedFd;
+#[cfg(not(target_os = "wasi"))]
+use crate::fd::RawFd;
+use crate::ffi::CStr;
+#[cfg(any(target_os = "ios", target_os = "macos"))]
+use crate::ffi::CString;
+#[cfg(not(target_os = "illumos"))]
+use crate::fs::Access;
+#[cfg(not(any(
+    target_os = "dragonfly",
+    target_os = "illumos",
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "netbsd",
+    target_os = "openbsd",
+    target_os = "redox",
+)))]
+use crate::fs::Advice;
+#[cfg(not(any(
+    target_os = "dragonfly",
+    target_os = "illumos",
+    target_os = "netbsd",
+    target_os = "openbsd",
+    target_os = "redox",
+)))]
+use crate::fs::FallocateFlags;
+#[cfg(not(target_os = "wasi"))]
+use crate::fs::FlockOperation;
+#[cfg(any(target_os = "android", target_os = "freebsd", target_os = "linux"))]
+use crate::fs::MemfdFlags;
+#[cfg(any(
+    target_os = "android",
+    target_os = "freebsd",
+    target_os = "fuchsia",
+    target_os = "linux",
+))]
+use crate::fs::SealFlags;
+#[cfg(not(any(
+    target_os = "illumos",
+    target_os = "netbsd",
+    target_os = "redox",
+    target_os = "wasi",
+)))]
+// not implemented in libc for netbsd yet
+use crate::fs::StatFs;
+#[cfg(any(target_os = "android", target_os = "linux"))]
+use crate::fs::{cwd, RenameFlags, ResolveFlags, Statx, StatxFlags};
+#[cfg(not(any(
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "redox",
+    target_os = "wasi",
+)))]
+use crate::fs::{Dev, FileType};
+use crate::fs::{FdFlags, Mode, OFlags, Stat, Timestamps};
+use crate::io::{self, OwnedFd, SeekFrom};
+#[cfg(not(target_os = "wasi"))]
+use crate::process::{Gid, Uid};
+#[cfg(not(all(
+    any(target_arch = "arm", target_arch = "mips", target_arch = "x86"),
+    target_env = "gnu",
+)))]
+use crate::utils::as_ptr;
+use core::convert::TryInto;
+#[cfg(any(
+    target_os = "android",
+    target_os = "ios",
+    target_os = "linux",
+    target_os = "macos",
+))]
+use core::mem::size_of;
+use core::mem::MaybeUninit;
+#[cfg(any(target_os = "android", target_os = "linux"))]
+use core::ptr::null;
+#[cfg(any(
+    target_os = "android",
+    target_os = "ios",
+    target_os = "linux",
+    target_os = "macos",
+))]
+use core::ptr::null_mut;
+#[cfg(any(target_os = "ios", target_os = "macos"))]
+use {
+    super::super::conv::nonnegative_ret,
+    crate::fs::{copyfile_state_t, CloneFlags, CopyfileFlags},
+};
+#[cfg(not(target_os = "redox"))]
+use {super::super::offset::libc_openat, crate::fs::AtFlags};
+
+#[cfg(all(
+    any(target_arch = "arm", target_arch = "mips", target_arch = "x86"),
+    target_env = "gnu",
+))]
+weak!(fn __utimensat64(c::c_int, *const c::c_char, *const LibcTimespec, c::c_int) -> c::c_int);
+#[cfg(all(
+    any(target_arch = "arm", target_arch = "mips", target_arch = "x86"),
+    target_env = "gnu",
+))]
+weak!(fn __futimens64(c::c_int, *const LibcTimespec) -> c::c_int);
+
+/// Use a direct syscall (via libc) for `openat`.
+///
+/// This is only currently necessary as a workaround for old glibc; see below.
+#[cfg(all(unix, target_env = "gnu"))]
+fn openat_via_syscall(
+    dirfd: BorrowedFd<'_>,
+    path: &CStr,
+    oflags: OFlags,
+    mode: Mode,
+) -> io::Result<OwnedFd> {
+    unsafe {
+        let dirfd = borrowed_fd(dirfd);
+        let path = c_str(path);
+        let oflags = oflags.bits();
+        let mode = c::c_uint::from(mode.bits());
+        ret_owned_fd(c::syscall(
+            c::SYS_openat,
+            c::c_long::from(dirfd),
+            path,
+            c::c_long::from(oflags),
+            mode as c::c_long,
+        ) as c::c_int)
+    }
+}
+
+#[cfg(not(target_os = "redox"))]
+pub(crate) fn openat(
+    dirfd: BorrowedFd<'_>,
+    path: &CStr,
+    oflags: OFlags,
+    mode: Mode,
+) -> io::Result<OwnedFd> {
+    // Work around <https://sourceware.org/bugzilla/show_bug.cgi?id=17523>.
+    // Basically old glibc versions don't handle O_TMPFILE correctly.
+    #[cfg(all(unix, target_env = "gnu"))]
+    if oflags.contains(OFlags::TMPFILE) && crate::imp::if_glibc_is_less_than_2_25() {
+        return openat_via_syscall(dirfd, path, oflags, mode);
+    }
+    unsafe {
+        // Pass `mode` as a `c_uint` even if `mode_t` is narrower, since
+        // `libc_openat` is declared as a variadic function and narrower
+        // arguments are promoted.
+        ret_owned_fd(libc_openat(
+            borrowed_fd(dirfd),
+            c_str(path),
+            oflags.bits(),
+            c::c_uint::from(mode.bits()),
+        ))
+    }
+}
+
+#[cfg(not(any(
+    target_os = "illumos",
+    target_os = "netbsd",
+    target_os = "redox",
+    target_os = "wasi",
+)))]
+#[inline]
+pub(crate) fn statfs(filename: &CStr) -> io::Result<StatFs> {
+    unsafe {
+        let mut result = MaybeUninit::<StatFs>::uninit();
+        ret(libc_statfs(c_str(filename), result.as_mut_ptr()))?;
+        Ok(result.assume_init())
+    }
+}
+
+#[cfg(not(target_os = "redox"))]
+#[inline]
+pub(crate) fn readlinkat(dirfd: BorrowedFd<'_>, path: &CStr, buf: &mut [u8]) -> io::Result<usize> {
+    unsafe {
+        ret_ssize_t(c::readlinkat(
+            borrowed_fd(dirfd),
+            c_str(path),
+            buf.as_mut_ptr().cast::<c::c_char>(),
+            buf.len(),
+        ))
+        .map(|nread| nread as usize)
+    }
+}
+
+#[cfg(not(target_os = "redox"))]
+pub(crate) fn mkdirat(dirfd: BorrowedFd<'_>, path: &CStr, mode: Mode) -> io::Result<()> {
+    unsafe {
+        ret(c::mkdirat(
+            borrowed_fd(dirfd),
+            c_str(path),
+            mode.bits() as c::mode_t,
+        ))
+    }
+}
+
+#[cfg(not(target_os = "redox"))]
+pub(crate) fn linkat(
+    old_dirfd: BorrowedFd<'_>,
+    old_path: &CStr,
+    new_dirfd: BorrowedFd<'_>,
+    new_path: &CStr,
+    flags: AtFlags,
+) -> io::Result<()> {
+    unsafe {
+        ret(c::linkat(
+            borrowed_fd(old_dirfd),
+            c_str(old_path),
+            borrowed_fd(new_dirfd),
+            c_str(new_path),
+            flags.bits(),
+        ))
+    }
+}
+
+#[cfg(not(target_os = "redox"))]
+pub(crate) fn unlinkat(dirfd: BorrowedFd<'_>, path: &CStr, flags: AtFlags) -> io::Result<()> {
+    unsafe { ret(c::unlinkat(borrowed_fd(dirfd), c_str(path), flags.bits())) }
+}
+
+#[cfg(not(target_os = "redox"))]
+pub(crate) fn renameat(
+    old_dirfd: BorrowedFd<'_>,
+    old_path: &CStr,
+    new_dirfd: BorrowedFd<'_>,
+    new_path: &CStr,
+) -> io::Result<()> {
+    unsafe {
+        ret(c::renameat(
+            borrowed_fd(old_dirfd),
+            c_str(old_path),
+            borrowed_fd(new_dirfd),
+            c_str(new_path),
+        ))
+    }
+}
+
+#[cfg(all(target_os = "linux", target_env = "gnu"))]
+pub(crate) fn renameat2(
+    old_dirfd: BorrowedFd<'_>,
+    old_path: &CStr,
+    new_dirfd: BorrowedFd<'_>,
+    new_path: &CStr,
+    flags: RenameFlags,
+) -> io::Result<()> {
+    // `getrandom` wasn't supported in glibc until 2.28.
+    weak_or_syscall! {
+        fn renameat2(
+            olddirfd: c::c_int,
+            oldpath: *const c::c_char,
+            newdirfd: c::c_int,
+            newpath: *const c::c_char,
+            flags: c::c_uint
+        ) via SYS_renameat2 -> c::c_int
+    }
+
+    unsafe {
+        ret(renameat2(
+            borrowed_fd(old_dirfd),
+            c_str(old_path),
+            borrowed_fd(new_dirfd),
+            c_str(new_path),
+            flags.bits(),
+        ))
+    }
+}
+
+/// At present, `libc` only has `renameat2` defined for glibc. On other
+/// ABIs, `RenameFlags` has no flags defined, and we use plain `renameat`.
+#[cfg(any(
+    target_os = "android",
+    all(target_os = "linux", not(target_env = "gnu")),
+))]
+#[inline]
+pub(crate) fn renameat2(
+    old_dirfd: BorrowedFd<'_>,
+    old_path: &CStr,
+    new_dirfd: BorrowedFd<'_>,
+    new_path: &CStr,
+    flags: RenameFlags,
+) -> io::Result<()> {
+    assert!(flags.is_empty());
+    renameat(old_dirfd, old_path, new_dirfd, new_path)
+}
+
+#[cfg(not(target_os = "redox"))]
+pub(crate) fn symlinkat(
+    old_path: &CStr,
+    new_dirfd: BorrowedFd<'_>,
+    new_path: &CStr,
+) -> io::Result<()> {
+    unsafe {
+        ret(c::symlinkat(
+            c_str(old_path),
+            borrowed_fd(new_dirfd),
+            c_str(new_path),
+        ))
+    }
+}
+
+#[cfg(not(target_os = "redox"))]
+pub(crate) fn statat(dirfd: BorrowedFd<'_>, path: &CStr, flags: AtFlags) -> io::Result<Stat> {
+    // 32-bit and mips64 Linux: `struct stat64` is not y2038 compatible; use
+    // `statx`.
+    #[cfg(all(
+        any(target_os = "android", target_os = "linux"),
+        any(target_pointer_width = "32", target_arch = "mips64"),
+    ))]
+    {
+        match statx(dirfd, path, flags, StatxFlags::BASIC_STATS) {
+            Ok(x) => return statx_to_stat(x),
+            Err(io::Errno::NOSYS) => statat_old(dirfd, path, flags),
+            Err(e) => return Err(e),
+        }
+    }
+
+    // Main version: libc is y2038 safe. Or, the platform is not y2038 safe and
+    // there's nothing practical we can do.
+    #[cfg(not(all(
+        any(target_os = "android", target_os = "linux"),
+        any(target_pointer_width = "32", target_arch = "mips64"),
+    )))]
+    unsafe {
+        let mut stat = MaybeUninit::<Stat>::uninit();
+        ret(libc_fstatat(
+            borrowed_fd(dirfd),
+            c_str(path),
+            stat.as_mut_ptr(),
+            flags.bits(),
+        ))?;
+        Ok(stat.assume_init())
+    }
+}
+
+#[cfg(all(
+    any(target_os = "android", target_os = "linux"),
+    any(target_pointer_width = "32", target_arch = "mips64"),
+))]
+fn statat_old(dirfd: BorrowedFd<'_>, path: &CStr, flags: AtFlags) -> io::Result<Stat> {
+    unsafe {
+        let mut result = MaybeUninit::<c::stat64>::uninit();
+        ret(libc_fstatat(
+            borrowed_fd(dirfd),
+            c_str(path),
+            result.as_mut_ptr(),
+            flags.bits(),
+        ))?;
+        stat64_to_stat(result.assume_init())
+    }
+}
+
+#[cfg(not(any(target_os = "emscripten", target_os = "illumos", target_os = "redox")))]
+pub(crate) fn accessat(
+    dirfd: BorrowedFd<'_>,
+    path: &CStr,
+    access: Access,
+    flags: AtFlags,
+) -> io::Result<()> {
+    unsafe {
+        ret(c::faccessat(
+            borrowed_fd(dirfd),
+            c_str(path),
+            access.bits(),
+            flags.bits(),
+        ))
+    }
+}
+
+#[cfg(target_os = "emscripten")]
+pub(crate) fn accessat(
+    _dirfd: BorrowedFd<'_>,
+    _path: &CStr,
+    _access: Access,
+    _flags: AtFlags,
+) -> io::Result<()> {
+    Ok(())
+}
+
+#[cfg(not(target_os = "redox"))]
+pub(crate) fn utimensat(
+    dirfd: BorrowedFd<'_>,
+    path: &CStr,
+    times: &Timestamps,
+    flags: AtFlags,
+) -> io::Result<()> {
+    // 32-bit gnu version: libc has `utimensat` but it is not y2038 safe by
+    // default.
+    #[cfg(all(
+        any(target_arch = "arm", target_arch = "mips", target_arch = "x86"),
+        target_env = "gnu",
+    ))]
+    unsafe {
+        if let Some(libc_utimensat) = __utimensat64.get() {
+            let libc_times: [LibcTimespec; 2] = [
+                times.last_access.clone().into(),
+                times.last_modification.clone().into(),
+            ];
+
+            ret(libc_utimensat(
+                borrowed_fd(dirfd),
+                c_str(path),
+                libc_times.as_ptr(),
+                flags.bits(),
+            ))
+        } else {
+            utimensat_old(dirfd, path, times, flags)
+        }
+    }
+
+    // Main version: libc is y2038 safe and has `utimensat`. Or, the platform
+    // is not y2038 safe and there's nothing practical we can do.
+    #[cfg(not(any(
+        target_os = "ios",
+        target_os = "macos",
+        all(
+            any(target_arch = "arm", target_arch = "mips", target_arch = "x86"),
+            target_env = "gnu",
+        )
+    )))]
+    unsafe {
+        // Assert that `Timestamps` has the expected layout.
+        let _ = core::mem::transmute::<Timestamps, [c::timespec; 2]>(times.clone());
+
+        ret(c::utimensat(
+            borrowed_fd(dirfd),
+            c_str(path),
+            as_ptr(times).cast(),
+            flags.bits(),
+        ))
+    }
+
+    // `utimensat` was introduced in macOS 10.13.
+    #[cfg(any(target_os = "ios", target_os = "macos"))]
+    unsafe {
+        // ABI details
+        weak! {
+            fn utimensat(
+                c::c_int,
+                *const c::c_char,
+                *const c::timespec,
+                c::c_int
+            ) -> c::c_int
+        }
+        extern "C" {
+            fn setattrlist(
+                path: *const c::c_char,
+                attr_list: *const Attrlist,
+                attr_buf: *const c::c_void,
+                attr_buf_size: c::size_t,
+                options: c::c_ulong,
+            ) -> c::c_int;
+        }
+        const FSOPT_NOFOLLOW: c::c_ulong = 0x0000_0001;
+
+        // If we have `utimensat`, use it.
+        if let Some(have_utimensat) = utimensat.get() {
+            // Assert that `Timestamps` has the expected layout.
+            let _ = core::mem::transmute::<Timestamps, [c::timespec; 2]>(times.clone());
+
+            return ret(have_utimensat(
+                borrowed_fd(dirfd),
+                c_str(path),
+                as_ptr(times).cast(),
+                flags.bits(),
+            ));
+        }
+
+        // `setattrlistat` was introduced in 10.13 along with `utimensat`, so if
+        // we don't have `utimensat`, we don't have `setattrlistat` either.
+        // Emulate it using `fork`, and `fchdir` and [`setattrlist`].
+        //
+        // [`setattrlist`]: https://developer.apple.com/library/archive/documentation/System/Conceptual/ManPages_iPhoneOS/man2/setattrlist.2.html
+        match c::fork() {
+            -1 => Err(io::Errno::IO),
+            0 => {
+                if c::fchdir(borrowed_fd(dirfd)) != 0 {
+                    let code = match libc_errno::errno().0 {
+                        c::EACCES => 2,
+                        c::ENOTDIR => 3,
+                        _ => 1,
+                    };
+                    c::_exit(code);
+                }
+
+                let mut flags_arg = 0;
+                if flags.contains(AtFlags::SYMLINK_NOFOLLOW) {
+                    flags_arg |= FSOPT_NOFOLLOW;
+                }
+
+                let (attrbuf_size, times, attrs) = times_to_attrlist(times);
+
+                if setattrlist(
+                    c_str(path),
+                    &attrs,
+                    as_ptr(&times).cast(),
+                    attrbuf_size,
+                    flags_arg,
+                ) != 0
+                {
+                    // Translate expected errno codes into ad-hoc integer
+                    // values suitable for exit statuses.
+                    let code = match libc_errno::errno().0 {
+                        c::EACCES => 2,
+                        c::ENOTDIR => 3,
+                        c::EPERM => 4,
+                        c::EROFS => 5,
+                        c::ELOOP => 6,
+                        c::ENOENT => 7,
+                        c::ENAMETOOLONG => 8,
+                        c::EINVAL => 9,
+                        c::ESRCH => 10,
+                        c::ENOTSUP => 11,
+                        _ => 1,
+                    };
+                    c::_exit(code);
+                }
+
+                c::_exit(0);
+            }
+            child_pid => {
+                let mut wstatus = 0;
+                let _ = ret_c_int(c::waitpid(child_pid, &mut wstatus, 0))?;
+                if c::WIFEXITED(wstatus) {
+                    // Translate our ad-hoc exit statuses back to errno codes.
+                    match c::WEXITSTATUS(wstatus) {
+                        0 => Ok(()),
+                        2 => Err(io::Errno::ACCESS),
+                        3 => Err(io::Errno::NOTDIR),
+                        4 => Err(io::Errno::PERM),
+                        5 => Err(io::Errno::ROFS),
+                        6 => Err(io::Errno::LOOP),
+                        7 => Err(io::Errno::NOENT),
+                        8 => Err(io::Errno::NAMETOOLONG),
+                        9 => Err(io::Errno::INVAL),
+                        10 => Err(io::Errno::SRCH),
+                        11 => Err(io::Errno::NOTSUP),
+                        _ => Err(io::Errno::IO),
+                    }
+                } else {
+                    Err(io::Errno::IO)
+                }
+            }
+        }
+    }
+}
+
+#[cfg(all(
+    any(target_arch = "arm", target_arch = "mips", target_arch = "x86"),
+    target_env = "gnu",
+))]
+unsafe fn utimensat_old(
+    dirfd: BorrowedFd<'_>,
+    path: &CStr,
+    times: &Timestamps,
+    flags: AtFlags,
+) -> io::Result<()> {
+    let old_times = [
+        c::timespec {
+            tv_sec: times
+                .last_access
+                .tv_sec
+                .try_into()
+                .map_err(|_| io::Errno::OVERFLOW)?,
+            tv_nsec: times.last_access.tv_nsec,
+        },
+        c::timespec {
+            tv_sec: times
+                .last_modification
+                .tv_sec
+                .try_into()
+                .map_err(|_| io::Errno::OVERFLOW)?,
+            tv_nsec: times.last_modification.tv_nsec,
+        },
+    ];
+    ret(c::utimensat(
+        borrowed_fd(dirfd),
+        c_str(path),
+        old_times.as_ptr(),
+        flags.bits(),
+    ))
+}
+
+#[cfg(not(any(
+    target_os = "android",
+    target_os = "linux",
+    target_os = "redox",
+    target_os = "wasi",
+)))]
+pub(crate) fn chmodat(dirfd: BorrowedFd<'_>, path: &CStr, mode: Mode) -> io::Result<()> {
+    unsafe { ret(c::fchmodat(borrowed_fd(dirfd), c_str(path), mode.bits(), 0)) }
+}
+
+#[cfg(any(target_os = "android", target_os = "linux"))]
+pub(crate) fn chmodat(dirfd: BorrowedFd<'_>, path: &CStr, mode: Mode) -> io::Result<()> {
+    // Linux's `fchmodat` does not have a flags argument.
+    unsafe {
+        // Pass `mode` as a `c_uint` even if `mode_t` is narrower, since
+        // `libc_openat` is declared as a variadic function and narrower
+        // arguments are promoted.
+        syscall_ret(c::syscall(
+            c::SYS_fchmodat,
+            borrowed_fd(dirfd),
+            c_str(path),
+            c::c_uint::from(mode.bits()),
+        ))
+    }
+}
+
+#[cfg(any(target_os = "ios", target_os = "macos"))]
+pub(crate) fn fclonefileat(
+    srcfd: BorrowedFd<'_>,
+    dst_dirfd: BorrowedFd<'_>,
+    dst: &CStr,
+    flags: CloneFlags,
+) -> io::Result<()> {
+    syscall! {
+        fn fclonefileat(
+            srcfd: BorrowedFd<'_>,
+            dst_dirfd: BorrowedFd<'_>,
+            dst: *const c::c_char,
+            flags: c::c_int
+        ) via SYS_fclonefileat -> c::c_int
+    }
+
+    unsafe { ret(fclonefileat(srcfd, dst_dirfd, c_str(dst), flags.bits())) }
+}
+
+#[cfg(not(any(target_os = "redox", target_os = "wasi")))]
+pub(crate) fn chownat(
+    dirfd: BorrowedFd<'_>,
+    path: &CStr,
+    owner: Option<Uid>,
+    group: Option<Gid>,
+    flags: AtFlags,
+) -> io::Result<()> {
+    unsafe {
+        let (ow, gr) = crate::process::translate_fchown_args(owner, group);
+        ret(c::fchownat(
+            borrowed_fd(dirfd),
+            c_str(path),
+            ow,
+            gr,
+            flags.bits(),
+        ))
+    }
+}
+
+#[cfg(not(any(
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "redox",
+    target_os = "wasi",
+)))]
+pub(crate) fn mknodat(
+    dirfd: BorrowedFd<'_>,
+    path: &CStr,
+    file_type: FileType,
+    mode: Mode,
+    dev: Dev,
+) -> io::Result<()> {
+    unsafe {
+        ret(c::mknodat(
+            borrowed_fd(dirfd),
+            c_str(path),
+            (mode.bits() | file_type.as_raw_mode()) as c::mode_t,
+            dev.try_into().map_err(|_e| io::Errno::PERM)?,
+        ))
+    }
+}
+
+#[cfg(any(target_os = "android", target_os = "linux"))]
+pub(crate) fn copy_file_range(
+    fd_in: BorrowedFd<'_>,
+    off_in: Option<&mut u64>,
+    fd_out: BorrowedFd<'_>,
+    off_out: Option<&mut u64>,
+    len: u64,
+) -> io::Result<u64> {
+    assert_eq!(size_of::<c::loff_t>(), size_of::<u64>());
+
+    let mut off_in_val: c::loff_t = 0;
+    let mut off_out_val: c::loff_t = 0;
+    // Silently cast; we'll get `EINVAL` if the value is negative.
+    let off_in_ptr = if let Some(off_in) = &off_in {
+        off_in_val = (**off_in) as i64;
+        &mut off_in_val
+    } else {
+        null_mut()
+    };
+    let off_out_ptr = if let Some(off_out) = &off_out {
+        off_out_val = (**off_out) as i64;
+        &mut off_out_val
+    } else {
+        null_mut()
+    };
+    let len: usize = len.try_into().unwrap_or(usize::MAX);
+    let copied = unsafe {
+        syscall_ret_ssize_t(c::syscall(
+            c::SYS_copy_file_range,
+            borrowed_fd(fd_in),
+            off_in_ptr,
+            borrowed_fd(fd_out),
+            off_out_ptr,
+            len,
+            0, // no flags are defined yet
+        ))?
+    };
+    if let Some(off_in) = off_in {
+        *off_in = off_in_val as u64;
+    }
+    if let Some(off_out) = off_out {
+        *off_out = off_out_val as u64;
+    }
+    Ok(copied as u64)
+}
+
+#[cfg(not(any(
+    target_os = "dragonfly",
+    target_os = "illumos",
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "netbsd",
+    target_os = "openbsd",
+    target_os = "redox",
+)))]
+pub(crate) fn fadvise(fd: BorrowedFd<'_>, offset: u64, len: u64, advice: Advice) -> io::Result<()> {
+    let offset = offset as i64;
+    let len = len as i64;
+
+    // FreeBSD returns `EINVAL` on invalid offsets; emulate the POSIX behavior.
+    #[cfg(target_os = "freebsd")]
+    let offset = if (offset as i64) < 0 {
+        i64::MAX
+    } else {
+        offset
+    };
+
+    // FreeBSD returns `EINVAL` on overflow; emulate the POSIX behavior.
+    #[cfg(target_os = "freebsd")]
+    let len = if len > 0 && offset.checked_add(len).is_none() {
+        i64::MAX - offset
+    } else {
+        len
+    };
+
+    let err = unsafe { libc_posix_fadvise(borrowed_fd(fd), offset, len, advice as c::c_int) };
+
+    // `posix_fadvise` returns its error status rather than using `errno`.
+    if err == 0 {
+        Ok(())
+    } else {
+        Err(io::Errno(err))
+    }
+}
+
+pub(crate) fn fcntl_getfd(fd: BorrowedFd<'_>) -> io::Result<FdFlags> {
+    unsafe { ret_c_int(c::fcntl(borrowed_fd(fd), c::F_GETFD)).map(FdFlags::from_bits_truncate) }
+}
+
+pub(crate) fn fcntl_setfd(fd: BorrowedFd<'_>, flags: FdFlags) -> io::Result<()> {
+    unsafe { ret(c::fcntl(borrowed_fd(fd), c::F_SETFD, flags.bits())) }
+}
+
+pub(crate) fn fcntl_getfl(fd: BorrowedFd<'_>) -> io::Result<OFlags> {
+    unsafe { ret_c_int(c::fcntl(borrowed_fd(fd), c::F_GETFL)).map(OFlags::from_bits_truncate) }
+}
+
+pub(crate) fn fcntl_setfl(fd: BorrowedFd<'_>, flags: OFlags) -> io::Result<()> {
+    unsafe { ret(c::fcntl(borrowed_fd(fd), c::F_SETFL, flags.bits())) }
+}
+
+#[cfg(any(
+    target_os = "android",
+    target_os = "freebsd",
+    target_os = "fuchsia",
+    target_os = "linux",
+))]
+pub(crate) fn fcntl_get_seals(fd: BorrowedFd<'_>) -> io::Result<SealFlags> {
+    unsafe {
+        ret_c_int(c::fcntl(borrowed_fd(fd), c::F_GET_SEALS))
+            .map(|flags| SealFlags::from_bits_unchecked(flags))
+    }
+}
+
+#[cfg(any(
+    target_os = "android",
+    target_os = "freebsd",
+    target_os = "fuchsia",
+    target_os = "linux",
+))]
+pub(crate) fn fcntl_add_seals(fd: BorrowedFd<'_>, seals: SealFlags) -> io::Result<()> {
+    unsafe { ret(c::fcntl(borrowed_fd(fd), c::F_ADD_SEALS, seals.bits())) }
+}
+
+#[cfg(not(target_os = "wasi"))]
+pub(crate) fn fcntl_dupfd_cloexec(fd: BorrowedFd<'_>, min: RawFd) -> io::Result<OwnedFd> {
+    unsafe { ret_owned_fd(c::fcntl(borrowed_fd(fd), c::F_DUPFD_CLOEXEC, min)) }
+}
+
+pub(crate) fn seek(fd: BorrowedFd<'_>, pos: SeekFrom) -> io::Result<u64> {
+    let (whence, offset): (c::c_int, libc_off_t) = match pos {
+        SeekFrom::Start(pos) => {
+            let pos: u64 = pos;
+            // Silently cast; we'll get `EINVAL` if the value is negative.
+            (c::SEEK_SET, pos as i64)
+        }
+        SeekFrom::End(offset) => (c::SEEK_END, offset),
+        SeekFrom::Current(offset) => (c::SEEK_CUR, offset),
+    };
+    let offset = unsafe { ret_off_t(libc_lseek(borrowed_fd(fd), offset, whence))? };
+    Ok(offset as u64)
+}
+
+pub(crate) fn tell(fd: BorrowedFd<'_>) -> io::Result<u64> {
+    let offset = unsafe { ret_off_t(libc_lseek(borrowed_fd(fd), 0, c::SEEK_CUR))? };
+    Ok(offset as u64)
+}
+
+#[cfg(not(any(target_os = "android", target_os = "linux", target_os = "wasi")))]
+pub(crate) fn fchmod(fd: BorrowedFd<'_>, mode: Mode) -> io::Result<()> {
+    unsafe { ret(c::fchmod(borrowed_fd(fd), mode.bits())) }
+}
+
+#[cfg(any(target_os = "android", target_os = "linux"))]
+pub(crate) fn fchmod(fd: BorrowedFd<'_>, mode: Mode) -> io::Result<()> {
+    // Use `c::syscall` rather than `c::fchmod` because some libc
+    // implementations, such as musl, add extra logic to `fchmod` to emulate
+    // support for `O_PATH`, which uses `/proc` outside our control and
+    // interferes with our own use of `O_PATH`.
+    unsafe {
+        syscall_ret(c::syscall(
+            c::SYS_fchmod,
+            borrowed_fd(fd),
+            c::c_uint::from(mode.bits()),
+        ))
+    }
+}
+
+#[cfg(any(target_os = "android", target_os = "linux"))]
+pub(crate) fn fchown(fd: BorrowedFd<'_>, owner: Option<Uid>, group: Option<Gid>) -> io::Result<()> {
+    // Use `c::syscall` rather than `c::fchown` because some libc
+    // implementations, such as musl, add extra logic to `fchown` to emulate
+    // support for `O_PATH`, which uses `/proc` outside our control and
+    // interferes with our own use of `O_PATH`.
+    unsafe {
+        let (ow, gr) = crate::process::translate_fchown_args(owner, group);
+        syscall_ret(c::syscall(c::SYS_fchown, borrowed_fd(fd), ow, gr))
+    }
+}
+
+#[cfg(not(any(target_os = "android", target_os = "linux", target_os = "wasi")))]
+pub(crate) fn fchown(fd: BorrowedFd<'_>, owner: Option<Uid>, group: Option<Gid>) -> io::Result<()> {
+    unsafe {
+        let (ow, gr) = crate::process::translate_fchown_args(owner, group);
+        ret(c::fchown(borrowed_fd(fd), ow, gr))
+    }
+}
+
+#[cfg(not(target_os = "wasi"))]
+pub(crate) fn flock(fd: BorrowedFd<'_>, operation: FlockOperation) -> io::Result<()> {
+    unsafe { ret(c::flock(borrowed_fd(fd), operation as c::c_int)) }
+}
+
+pub(crate) fn fstat(fd: BorrowedFd<'_>) -> io::Result<Stat> {
+    // 32-bit and mips64 Linux: `struct stat64` is not y2038 compatible; use
+    // `statx`.
+    #[cfg(all(
+        any(target_os = "android", target_os = "linux"),
+        any(target_pointer_width = "32", target_arch = "mips64"),
+    ))]
+    {
+        match statx(fd, cstr!(""), AtFlags::EMPTY_PATH, StatxFlags::BASIC_STATS) {
+            Ok(x) => return statx_to_stat(x),
+            Err(io::Errno::NOSYS) => fstat_old(fd),
+            Err(e) => return Err(e),
+        }
+    }
+
+    // Main version: libc is y2038 safe. Or, the platform is not y2038 safe and
+    // there's nothing practical we can do.
+    #[cfg(not(all(
+        any(target_os = "android", target_os = "linux"),
+        any(target_pointer_width = "32", target_arch = "mips64"),
+    )))]
+    unsafe {
+        let mut stat = MaybeUninit::<Stat>::uninit();
+        ret(libc_fstat(borrowed_fd(fd), stat.as_mut_ptr()))?;
+        Ok(stat.assume_init())
+    }
+}
+
+#[cfg(all(
+    any(target_os = "android", target_os = "linux"),
+    any(target_pointer_width = "32", target_arch = "mips64"),
+))]
+fn fstat_old(fd: BorrowedFd<'_>) -> io::Result<Stat> {
+    unsafe {
+        let mut result = MaybeUninit::<c::stat64>::uninit();
+        ret(libc_fstat(borrowed_fd(fd), result.as_mut_ptr()))?;
+        stat64_to_stat(result.assume_init())
+    }
+}
+
+#[cfg(not(any(
+    target_os = "illumos",
+    target_os = "netbsd",
+    target_os = "redox",
+    target_os = "wasi",
+)))] // not implemented in libc for netbsd yet
+pub(crate) fn fstatfs(fd: BorrowedFd<'_>) -> io::Result<StatFs> {
+    let mut statfs = MaybeUninit::<StatFs>::uninit();
+    unsafe {
+        ret(libc_fstatfs(borrowed_fd(fd), statfs.as_mut_ptr()))?;
+        Ok(statfs.assume_init())
+    }
+}
+
+pub(crate) fn futimens(fd: BorrowedFd<'_>, times: &Timestamps) -> io::Result<()> {
+    // 32-bit gnu version: libc has `futimens` but it is not y2038 safe by default.
+    #[cfg(all(
+        any(target_arch = "arm", target_arch = "mips", target_arch = "x86"),
+        target_env = "gnu",
+    ))]
+    unsafe {
+        if let Some(libc_futimens) = __futimens64.get() {
+            let libc_times: [LibcTimespec; 2] = [
+                times.last_access.clone().into(),
+                times.last_modification.clone().into(),
+            ];
+
+            ret(libc_futimens(borrowed_fd(fd), libc_times.as_ptr()))
+        } else {
+            futimens_old(fd, times)
+        }
+    }
+
+    // Main version: libc is y2038 safe and has `futimens`. Or, the platform
+    // is not y2038 safe and there's nothing practical we can do.
+    #[cfg(not(any(
+        target_os = "ios",
+        target_os = "macos",
+        all(
+            any(target_arch = "arm", target_arch = "mips", target_arch = "x86"),
+            target_env = "gnu",
+        )
+    )))]
+    unsafe {
+        // Assert that `Timestamps` has the expected layout.
+        let _ = core::mem::transmute::<Timestamps, [c::timespec; 2]>(times.clone());
+
+        ret(c::futimens(borrowed_fd(fd), as_ptr(times).cast()))
+    }
+
+    // `futimens` was introduced in macOS 10.13.
+    #[cfg(any(target_os = "ios", target_os = "macos"))]
+    unsafe {
+        // ABI details.
+        weak! {
+            fn futimens(c::c_int, *const c::timespec) -> c::c_int
+        }
+        extern "C" {
+            fn fsetattrlist(
+                fd: c::c_int,
+                attr_list: *const Attrlist,
+                attr_buf: *const c::c_void,
+                attr_buf_size: c::size_t,
+                options: c::c_ulong,
+            ) -> c::c_int;
+        }
+
+        // If we have `futimens`, use it.
+        if let Some(have_futimens) = futimens.get() {
+            // Assert that `Timestamps` has the expected layout.
+            let _ = core::mem::transmute::<Timestamps, [c::timespec; 2]>(times.clone());
+
+            return ret(have_futimens(borrowed_fd(fd), as_ptr(times).cast()));
+        }
+
+        // Otherwise use `fsetattrlist`.
+        let (attrbuf_size, times, attrs) = times_to_attrlist(times);
+
+        ret(fsetattrlist(
+            borrowed_fd(fd),
+            &attrs,
+            as_ptr(&times).cast(),
+            attrbuf_size,
+            0,
+        ))
+    }
+}
+
+#[cfg(all(
+    any(target_arch = "arm", target_arch = "mips", target_arch = "x86"),
+    target_env = "gnu",
+))]
+unsafe fn futimens_old(fd: BorrowedFd<'_>, times: &Timestamps) -> io::Result<()> {
+    let old_times = [
+        c::timespec {
+            tv_sec: times
+                .last_access
+                .tv_sec
+                .try_into()
+                .map_err(|_| io::Errno::OVERFLOW)?,
+            tv_nsec: times.last_access.tv_nsec,
+        },
+        c::timespec {
+            tv_sec: times
+                .last_modification
+                .tv_sec
+                .try_into()
+                .map_err(|_| io::Errno::OVERFLOW)?,
+            tv_nsec: times.last_modification.tv_nsec,
+        },
+    ];
+
+    ret(c::futimens(borrowed_fd(fd), old_times.as_ptr()))
+}
+
+#[cfg(not(any(
+    target_os = "dragonfly",
+    target_os = "illumos",
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "netbsd",
+    target_os = "openbsd",
+    target_os = "redox",
+)))]
+pub(crate) fn fallocate(
+    fd: BorrowedFd<'_>,
+    mode: FallocateFlags,
+    offset: u64,
+    len: u64,
+) -> io::Result<()> {
+    // Silently cast; we'll get `EINVAL` if the value is negative.
+    let offset = offset as i64;
+    let len = len as i64;
+
+    #[cfg(any(target_os = "android", target_os = "fuchsia", target_os = "linux"))]
+    unsafe {
+        ret(libc_fallocate(borrowed_fd(fd), mode.bits(), offset, len))
+    }
+
+    #[cfg(not(any(target_os = "android", target_os = "fuchsia", target_os = "linux")))]
+    {
+        assert!(mode.is_empty());
+        let err = unsafe { libc_posix_fallocate(borrowed_fd(fd), offset, len) };
+
+        // `posix_fallocate` returns its error status rather than using `errno`.
+        if err == 0 {
+            Ok(())
+        } else {
+            Err(io::Errno(err))
+        }
+    }
+}
+
+#[cfg(any(target_os = "ios", target_os = "macos"))]
+pub(crate) fn fallocate(
+    fd: BorrowedFd<'_>,
+    mode: FallocateFlags,
+    offset: u64,
+    len: u64,
+) -> io::Result<()> {
+    let offset: i64 = offset.try_into().map_err(|_e| io::Errno::INVAL)?;
+    let len = len as i64;
+
+    assert!(mode.is_empty());
+
+    let new_len = offset.checked_add(len).ok_or_else(|| io::Errno::FBIG)?;
+    let mut store = c::fstore_t {
+        fst_flags: c::F_ALLOCATECONTIG,
+        fst_posmode: c::F_PEOFPOSMODE,
+        fst_offset: 0,
+        fst_length: new_len,
+        fst_bytesalloc: 0,
+    };
+    unsafe {
+        if c::fcntl(borrowed_fd(fd), c::F_PREALLOCATE, &store) == -1 {
+            store.fst_flags = c::F_ALLOCATEALL;
+            let _ = ret_c_int(c::fcntl(borrowed_fd(fd), c::F_PREALLOCATE, &store))?;
+        }
+        ret(c::ftruncate(borrowed_fd(fd), new_len))
+    }
+}
+
+pub(crate) fn fsync(fd: BorrowedFd<'_>) -> io::Result<()> {
+    unsafe { ret(c::fsync(borrowed_fd(fd))) }
+}
+
+#[cfg(not(any(
+    target_os = "dragonfly",
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "redox",
+)))]
+pub(crate) fn fdatasync(fd: BorrowedFd<'_>) -> io::Result<()> {
+    unsafe { ret(c::fdatasync(borrowed_fd(fd))) }
+}
+
+pub(crate) fn ftruncate(fd: BorrowedFd<'_>, length: u64) -> io::Result<()> {
+    let length = length.try_into().map_err(|_overflow_err| io::Errno::FBIG)?;
+    unsafe { ret(libc_ftruncate(borrowed_fd(fd), length)) }
+}
+
+#[cfg(any(target_os = "android", target_os = "freebsd", target_os = "linux"))]
+pub(crate) fn memfd_create(path: &CStr, flags: MemfdFlags) -> io::Result<OwnedFd> {
+    #[cfg(target_os = "freebsd")]
+    weakcall! {
+        fn memfd_create(
+            name: *const c::c_char,
+            flags: c::c_uint
+        ) -> c::c_int
+    }
+
+    #[cfg(any(target_os = "android", target_os = "linux"))]
+    weak_or_syscall! {
+        fn memfd_create(
+            name: *const c::c_char,
+            flags: c::c_uint
+        ) via SYS_memfd_create -> c::c_int
+    }
+
+    unsafe { ret_owned_fd(memfd_create(c_str(path), flags.bits())) }
+}
+
+#[cfg(any(target_os = "android", target_os = "linux"))]
+pub(crate) fn openat2(
+    dirfd: BorrowedFd<'_>,
+    path: &CStr,
+    oflags: OFlags,
+    mode: Mode,
+    resolve: ResolveFlags,
+) -> io::Result<OwnedFd> {
+    let oflags: i32 = oflags.bits();
+    let open_how = OpenHow {
+        oflag: u64::from(oflags as u32),
+        mode: u64::from(mode.bits()),
+        resolve: resolve.bits(),
+    };
+
+    unsafe {
+        syscall_ret_owned_fd(c::syscall(
+            SYS_OPENAT2,
+            borrowed_fd(dirfd),
+            c_str(path),
+            &open_how,
+            SIZEOF_OPEN_HOW,
+        ))
+    }
+}
+#[cfg(all(
+    target_pointer_width = "32",
+    any(target_os = "android", target_os = "linux"),
+))]
+const SYS_OPENAT2: i32 = 437;
+#[cfg(all(
+    target_pointer_width = "64",
+    any(target_os = "android", target_os = "linux"),
+))]
+const SYS_OPENAT2: i64 = 437;
+
+#[cfg(any(target_os = "android", target_os = "linux"))]
+#[repr(C)]
+#[derive(Debug)]
+struct OpenHow {
+    oflag: u64,
+    mode: u64,
+    resolve: u64,
+}
+#[cfg(any(target_os = "android", target_os = "linux"))]
+const SIZEOF_OPEN_HOW: usize = size_of::<OpenHow>();
+
+#[cfg(target_os = "linux")]
+pub(crate) fn sendfile(
+    out_fd: BorrowedFd<'_>,
+    in_fd: BorrowedFd<'_>,
+    offset: Option<&mut u64>,
+    count: usize,
+) -> io::Result<usize> {
+    unsafe {
+        let nsent = ret_ssize_t(c::sendfile64(
+            borrowed_fd(out_fd),
+            borrowed_fd(in_fd),
+            offset.map_or(null_mut(), crate::utils::as_mut_ptr).cast(),
+            count,
+        ))?;
+        Ok(nsent as usize)
+    }
+}
+
+/// Convert from a Linux `statx` value to rustix's `Stat`.
+#[cfg(all(
+    any(target_os = "android", target_os = "linux"),
+    target_pointer_width = "32",
+))]
+fn statx_to_stat(x: crate::fs::Statx) -> io::Result<Stat> {
+    Ok(Stat {
+        st_dev: crate::fs::makedev(x.stx_dev_major, x.stx_dev_minor).into(),
+        st_mode: x.stx_mode.into(),
+        st_nlink: x.stx_nlink.into(),
+        st_uid: x.stx_uid.into(),
+        st_gid: x.stx_gid.into(),
+        st_rdev: crate::fs::makedev(x.stx_rdev_major, x.stx_rdev_minor).into(),
+        st_size: x.stx_size.try_into().map_err(|_| io::Errno::OVERFLOW)?,
+        st_blksize: x.stx_blksize.into(),
+        st_blocks: x.stx_blocks.into(),
+        st_atime: x
+            .stx_atime
+            .tv_sec
+            .try_into()
+            .map_err(|_| io::Errno::OVERFLOW)?,
+        st_atime_nsec: x.stx_atime.tv_nsec as _,
+        st_mtime: x
+            .stx_mtime
+            .tv_sec
+            .try_into()
+            .map_err(|_| io::Errno::OVERFLOW)?,
+        st_mtime_nsec: x.stx_mtime.tv_nsec as _,
+        st_ctime: x
+            .stx_ctime
+            .tv_sec
+            .try_into()
+            .map_err(|_| io::Errno::OVERFLOW)?,
+        st_ctime_nsec: x.stx_ctime.tv_nsec as _,
+        st_ino: x.stx_ino.into(),
+    })
+}
+
+/// Convert from a Linux `statx` value to rustix's `Stat`.
+///
+/// mips64' `struct stat64` in libc has private fields, and `stx_blocks`
+#[cfg(all(
+    any(target_os = "android", target_os = "linux"),
+    target_arch = "mips64",
+))]
+fn statx_to_stat(x: crate::fs::Statx) -> io::Result<Stat> {
+    let mut result: Stat = unsafe { core::mem::zeroed() };
+
+    result.st_dev = crate::fs::makedev(x.stx_dev_major, x.stx_dev_minor);
+    result.st_mode = x.stx_mode.into();
+    result.st_nlink = x.stx_nlink.into();
+    result.st_uid = x.stx_uid.into();
+    result.st_gid = x.stx_gid.into();
+    result.st_rdev = crate::fs::makedev(x.stx_rdev_major, x.stx_rdev_minor);
+    result.st_size = x.stx_size.try_into().map_err(|_| io::Errno::OVERFLOW)?;
+    result.st_blksize = x.stx_blksize.into();
+    result.st_blocks = x.stx_blocks.try_into().map_err(|_e| io::Errno::OVERFLOW)?;
+    result.st_atime = x
+        .stx_atime
+        .tv_sec
+        .try_into()
+        .map_err(|_| io::Errno::OVERFLOW)?;
+    result.st_atime_nsec = x.stx_atime.tv_nsec as _;
+    result.st_mtime = x
+        .stx_mtime
+        .tv_sec
+        .try_into()
+        .map_err(|_| io::Errno::OVERFLOW)?;
+    result.st_mtime_nsec = x.stx_mtime.tv_nsec as _;
+    result.st_ctime = x
+        .stx_ctime
+        .tv_sec
+        .try_into()
+        .map_err(|_| io::Errno::OVERFLOW)?;
+    result.st_ctime_nsec = x.stx_ctime.tv_nsec as _;
+    result.st_ino = x.stx_ino.into();
+
+    Ok(result)
+}
+
+/// Convert from a Linux `stat64` value to rustix's `Stat`.
+#[cfg(all(
+    any(target_os = "android", target_os = "linux"),
+    target_pointer_width = "32",
+))]
+fn stat64_to_stat(s64: c::stat64) -> io::Result<Stat> {
+    Ok(Stat {
+        st_dev: s64.st_dev.try_into().map_err(|_| io::Errno::OVERFLOW)?,
+        st_mode: s64.st_mode.try_into().map_err(|_| io::Errno::OVERFLOW)?,
+        st_nlink: s64.st_nlink.try_into().map_err(|_| io::Errno::OVERFLOW)?,
+        st_uid: s64.st_uid.try_into().map_err(|_| io::Errno::OVERFLOW)?,
+        st_gid: s64.st_gid.try_into().map_err(|_| io::Errno::OVERFLOW)?,
+        st_rdev: s64.st_rdev.try_into().map_err(|_| io::Errno::OVERFLOW)?,
+        st_size: s64.st_size.try_into().map_err(|_| io::Errno::OVERFLOW)?,
+        st_blksize: s64.st_blksize.try_into().map_err(|_| io::Errno::OVERFLOW)?,
+        st_blocks: s64.st_blocks.try_into().map_err(|_| io::Errno::OVERFLOW)?,
+        st_atime: s64.st_atime.try_into().map_err(|_| io::Errno::OVERFLOW)?,
+        st_atime_nsec: s64
+            .st_atime_nsec
+            .try_into()
+            .map_err(|_| io::Errno::OVERFLOW)?,
+        st_mtime: s64.st_mtime.try_into().map_err(|_| io::Errno::OVERFLOW)?,
+        st_mtime_nsec: s64
+            .st_mtime_nsec
+            .try_into()
+            .map_err(|_| io::Errno::OVERFLOW)?,
+        st_ctime: s64.st_ctime.try_into().map_err(|_| io::Errno::OVERFLOW)?,
+        st_ctime_nsec: s64
+            .st_ctime_nsec
+            .try_into()
+            .map_err(|_| io::Errno::OVERFLOW)?,
+        st_ino: s64.st_ino.try_into().map_err(|_| io::Errno::OVERFLOW)?,
+    })
+}
+
+/// Convert from a Linux `stat64` value to rustix's `Stat`.
+///
+/// mips64' `struct stat64` in libc has private fields, and `st_blocks` has
+/// type `i64`.
+#[cfg(all(
+    any(target_os = "android", target_os = "linux"),
+    target_arch = "mips64",
+))]
+fn stat64_to_stat(s64: c::stat64) -> io::Result<Stat> {
+    let mut result: Stat = unsafe { core::mem::zeroed() };
+
+    result.st_dev = s64.st_dev.try_into().map_err(|_| io::Errno::OVERFLOW)?;
+    result.st_mode = s64.st_mode.try_into().map_err(|_| io::Errno::OVERFLOW)?;
+    result.st_nlink = s64.st_nlink.try_into().map_err(|_| io::Errno::OVERFLOW)?;
+    result.st_uid = s64.st_uid.try_into().map_err(|_| io::Errno::OVERFLOW)?;
+    result.st_gid = s64.st_gid.try_into().map_err(|_| io::Errno::OVERFLOW)?;
+    result.st_rdev = s64.st_rdev.try_into().map_err(|_| io::Errno::OVERFLOW)?;
+    result.st_size = s64.st_size.try_into().map_err(|_| io::Errno::OVERFLOW)?;
+    result.st_blksize = s64.st_blksize.try_into().map_err(|_| io::Errno::OVERFLOW)?;
+    result.st_blocks = s64.st_blocks.try_into().map_err(|_| io::Errno::OVERFLOW)?;
+    result.st_atime = s64.st_atime.try_into().map_err(|_| io::Errno::OVERFLOW)?;
+    result.st_atime_nsec = s64
+        .st_atime_nsec
+        .try_into()
+        .map_err(|_| io::Errno::OVERFLOW)?;
+    result.st_mtime = s64.st_mtime.try_into().map_err(|_| io::Errno::OVERFLOW)?;
+    result.st_mtime_nsec = s64
+        .st_mtime_nsec
+        .try_into()
+        .map_err(|_| io::Errno::OVERFLOW)?;
+    result.st_ctime = s64.st_ctime.try_into().map_err(|_| io::Errno::OVERFLOW)?;
+    result.st_ctime_nsec = s64
+        .st_ctime_nsec
+        .try_into()
+        .map_err(|_| io::Errno::OVERFLOW)?;
+    result.st_ino = s64.st_ino.try_into().map_err(|_| io::Errno::OVERFLOW)?;
+
+    Ok(result)
+}
+
+#[cfg(any(target_os = "android", target_os = "linux"))]
+#[allow(non_upper_case_globals)]
+mod sys {
+    use super::{c, BorrowedFd, Statx};
+
+    #[cfg(all(target_os = "android", target_arch = "arm"))]
+    const SYS_statx: c::c_long = 397;
+    #[cfg(all(target_os = "android", target_arch = "x86"))]
+    const SYS_statx: c::c_long = 383;
+    #[cfg(all(target_os = "android", target_arch = "aarch64"))]
+    const SYS_statx: c::c_long = 291;
+    #[cfg(all(target_os = "android", target_arch = "x86_64"))]
+    const SYS_statx: c::c_long = 332;
+
+    weak_or_syscall! {
+        pub(super) fn statx(
+            pirfd: BorrowedFd<'_>,
+            path: *const c::c_char,
+            flags: c::c_int,
+            mask: c::c_uint,
+            buf: *mut Statx
+        ) via SYS_statx -> c::c_int
+    }
+}
+
+#[cfg(any(target_os = "android", target_os = "linux"))]
+#[allow(non_upper_case_globals)]
+pub(crate) fn statx(
+    dirfd: BorrowedFd<'_>,
+    path: &CStr,
+    flags: AtFlags,
+    mask: StatxFlags,
+) -> io::Result<Statx> {
+    let mut statx_buf = MaybeUninit::<Statx>::uninit();
+    unsafe {
+        ret(sys::statx(
+            dirfd,
+            c_str(path),
+            flags.bits(),
+            mask.bits(),
+            statx_buf.as_mut_ptr(),
+        ))?;
+        Ok(statx_buf.assume_init())
+    }
+}
+
+#[cfg(any(target_os = "android", target_os = "linux"))]
+#[inline]
+pub(crate) fn is_statx_available() -> bool {
+    unsafe {
+        // Call `statx` with null pointers so that if it fails for any reason
+        // other than `EFAULT`, we know it's not supported.
+        matches!(
+            ret(sys::statx(cwd(), null(), 0, 0, null_mut())),
+            Err(io::Errno::FAULT)
+        )
+    }
+}
+
+#[cfg(any(target_os = "ios", target_os = "macos"))]
+pub(crate) unsafe fn fcopyfile(
+    from: BorrowedFd<'_>,
+    to: BorrowedFd<'_>,
+    state: copyfile_state_t,
+    flags: CopyfileFlags,
+) -> io::Result<()> {
+    extern "C" {
+        fn fcopyfile(
+            from: c::c_int,
+            to: c::c_int,
+            state: copyfile_state_t,
+            flags: c::c_uint,
+        ) -> c::c_int;
+    }
+
+    nonnegative_ret(fcopyfile(
+        borrowed_fd(from),
+        borrowed_fd(to),
+        state,
+        flags.bits(),
+    ))
+}
+
+#[cfg(any(target_os = "ios", target_os = "macos"))]
+pub(crate) fn copyfile_state_alloc() -> io::Result<copyfile_state_t> {
+    extern "C" {
+        fn copyfile_state_alloc() -> copyfile_state_t;
+    }
+
+    let result = unsafe { copyfile_state_alloc() };
+    if result.0.is_null() {
+        Err(io::Errno::last_os_error())
+    } else {
+        Ok(result)
+    }
+}
+
+#[cfg(any(target_os = "ios", target_os = "macos"))]
+pub(crate) unsafe fn copyfile_state_free(state: copyfile_state_t) -> io::Result<()> {
+    extern "C" {
+        fn copyfile_state_free(state: copyfile_state_t) -> c::c_int;
+    }
+
+    nonnegative_ret(copyfile_state_free(state))
+}
+
+#[cfg(any(target_os = "ios", target_os = "macos"))]
+const COPYFILE_STATE_COPIED: u32 = 8;
+
+#[cfg(any(target_os = "ios", target_os = "macos"))]
+pub(crate) unsafe fn copyfile_state_get_copied(state: copyfile_state_t) -> io::Result<u64> {
+    let mut copied = MaybeUninit::<u64>::uninit();
+    copyfile_state_get(state, COPYFILE_STATE_COPIED, copied.as_mut_ptr().cast())?;
+    Ok(copied.assume_init())
+}
+
+#[cfg(any(target_os = "ios", target_os = "macos"))]
+pub(crate) unsafe fn copyfile_state_get(
+    state: copyfile_state_t,
+    flag: u32,
+    dst: *mut c::c_void,
+) -> io::Result<()> {
+    extern "C" {
+        fn copyfile_state_get(state: copyfile_state_t, flag: u32, dst: *mut c::c_void) -> c::c_int;
+    }
+
+    nonnegative_ret(copyfile_state_get(state, flag, dst))
+}
+
+#[cfg(any(target_os = "ios", target_os = "macos"))]
+pub(crate) fn getpath(fd: BorrowedFd<'_>) -> io::Result<CString> {
+    // The use of PATH_MAX is generally not encouraged, but it
+    // is inevitable in this case because macOS defines `fcntl` with
+    // `F_GETPATH` in terms of `MAXPATHLEN`, and there are no
+    // alternatives. If a better method is invented, it should be used
+    // instead.
+    let mut buf = vec![0; c::PATH_MAX as usize];
+
+    // From the [macOS `fcntl` man page]:
+    // `F_GETPATH` - Get the path of the file descriptor `Fildes`. The argument
+    //               must be a buffer of size `MAXPATHLEN` or greater.
+    //
+    // [macOS `fcntl` man page]: https://developer.apple.com/library/archive/documentation/System/Conceptual/ManPages_iPhoneOS/man2/fcntl.2.html
+    unsafe {
+        ret(c::fcntl(borrowed_fd(fd), c::F_GETPATH, buf.as_mut_ptr()))?;
+    }
+
+    let l = buf.iter().position(|&c| c == 0).unwrap();
+    buf.truncate(l);
+
+    // TODO: On Rust 1.56, we can use `shrink_to` here.
+    //buf.shrink_to(l + 1);
+    buf.shrink_to_fit();
+
+    Ok(CString::new(buf).unwrap())
+}
+
+#[cfg(any(target_os = "ios", target_os = "macos"))]
+pub(crate) fn fcntl_rdadvise(fd: BorrowedFd<'_>, offset: u64, len: u64) -> io::Result<()> {
+    // From the [macOS `fcntl` man page]:
+    // `F_RDADVISE` - Issue an advisory read async with no copy to user.
+    //
+    // The `F_RDADVISE` command operates on the following structure which holds
+    // information passed from the user to the system:
+    //
+    // ```c
+    // struct radvisory {
+    //      off_t   ra_offset;  /* offset into the file */
+    //      int     ra_count;   /* size of the read     */
+    // };
+    // ```
+    //
+    // [macOS `fcntl` man page]: https://developer.apple.com/library/archive/documentation/System/Conceptual/ManPages_iPhoneOS/man2/fcntl.2.html
+    let ra_offset = match offset.try_into() {
+        Ok(len) => len,
+        // If this conversion fails, the user is providing an offset outside
+        // any possible file extent, so just ignore it.
+        Err(_) => return Ok(()),
+    };
+    let ra_count = match len.try_into() {
+        Ok(len) => len,
+        // If this conversion fails, the user is providing a dubiously large
+        // hint which is unlikely to improve performance.
+        Err(_) => return Ok(()),
+    };
+    unsafe {
+        let radvisory = c::radvisory {
+            ra_offset,
+            ra_count,
+        };
+        ret(c::fcntl(borrowed_fd(fd), c::F_RDADVISE, &radvisory))
+    }
+}
+
+#[cfg(any(target_os = "ios", target_os = "macos"))]
+pub(crate) fn fcntl_fullfsync(fd: BorrowedFd<'_>) -> io::Result<()> {
+    unsafe { ret(c::fcntl(borrowed_fd(fd), c::F_FULLFSYNC)) }
+}
+
+/// Convert `times` from a `futimens`/`utimensat` argument into `setattrlist`
+/// arguments.
+#[cfg(any(target_os = "ios", target_os = "macos"))]
+fn times_to_attrlist(times: &Timestamps) -> (c::size_t, [c::timespec; 2], Attrlist) {
+    // ABI details.
+    const ATTR_CMN_MODTIME: u32 = 0x0000_0400;
+    const ATTR_CMN_ACCTIME: u32 = 0x0000_1000;
+    const ATTR_BIT_MAP_COUNT: u16 = 5;
+
+    let mut times = times.clone();
+
+    // If we have any `UTIME_NOW` elements, replace them with the current time.
+    if times.last_access.tv_nsec == c::UTIME_NOW || times.last_modification.tv_nsec == c::UTIME_NOW
+    {
+        let now = {
+            let mut tv = c::timeval {
+                tv_sec: 0,
+                tv_usec: 0,
+            };
+            unsafe {
+                let r = c::gettimeofday(&mut tv, null_mut());
+                assert_eq!(r, 0);
+            }
+            c::timespec {
+                tv_sec: tv.tv_sec,
+                tv_nsec: (tv.tv_usec * 1000) as _,
+            }
+        };
+        if times.last_access.tv_nsec == c::UTIME_NOW {
+            times.last_access = now;
+        }
+        if times.last_modification.tv_nsec == c::UTIME_NOW {
+            times.last_modification = now;
+        }
+    }
+
+    // Pack the return values following the rules for [`getattrlist`].
+    //
+    // [`getattrlist`]: https://developer.apple.com/library/archive/documentation/System/Conceptual/ManPages_iPhoneOS/man2/getattrlist.2.html
+    let mut times_size = 0;
+    let mut attrs = Attrlist {
+        bitmapcount: ATTR_BIT_MAP_COUNT,
+        reserved: 0,
+        commonattr: 0,
+        volattr: 0,
+        dirattr: 0,
+        fileattr: 0,
+        forkattr: 0,
+    };
+    let mut return_times = [c::timespec {
+        tv_sec: 0,
+        tv_nsec: 0,
+    }; 2];
+    let mut times_index = 0;
+    if times.last_modification.tv_nsec != c::UTIME_OMIT {
+        attrs.commonattr |= ATTR_CMN_MODTIME;
+        return_times[times_index] = times.last_modification;
+        times_index += 1;
+        times_size += size_of::<c::timespec>();
+    }
+    if times.last_access.tv_nsec != c::UTIME_OMIT {
+        attrs.commonattr |= ATTR_CMN_ACCTIME;
+        return_times[times_index] = times.last_access;
+        times_size += size_of::<c::timespec>();
+    }
+
+    (times_size, return_times, attrs)
+}
+
+/// Support type for `Attrlist`.
+#[cfg(any(target_os = "ios", target_os = "macos"))]
+type Attrgroup = u32;
+
+/// Attribute list for use with `setattrlist`.
+#[cfg(any(target_os = "ios", target_os = "macos"))]
+#[repr(C)]
+struct Attrlist {
+    bitmapcount: u16,
+    reserved: u16,
+    commonattr: Attrgroup,
+    volattr: Attrgroup,
+    dirattr: Attrgroup,
+    fileattr: Attrgroup,
+    forkattr: Attrgroup,
+}
diff --git a/vendor/rustix/src/imp/libc/fs/types.rs b/vendor/rustix/src/imp/libc/fs/types.rs
new file mode 100644
index 000000000..9d892daf0
--- /dev/null
+++ b/vendor/rustix/src/imp/libc/fs/types.rs
@@ -0,0 +1,1028 @@
+use super::super::c;
+use bitflags::bitflags;
+
+bitflags! {
+    /// `FD_*` constants for use with [`fcntl_getfd`] and [`fcntl_setfd`].
+    ///
+    /// [`fcntl_getfd`]: crate::fs::fcntl_getfd
+    /// [`fcntl_setfd`]: crate::fs::fcntl_setfd
+    pub struct FdFlags: c::c_int {
+        /// `FD_CLOEXEC`
+        const CLOEXEC = c::FD_CLOEXEC;
+    }
+}
+
+bitflags! {
+    /// `*_OK` constants for use with [`accessat`].
+    ///
+    /// [`accessat`]: fn.accessat.html
+    pub struct Access: c::c_int {
+        /// `R_OK`
+        const READ_OK = c::R_OK;
+
+        /// `W_OK`
+        const WRITE_OK = c::W_OK;
+
+        /// `X_OK`
+        const EXEC_OK = c::X_OK;
+
+        /// `F_OK`
+        const EXISTS = c::F_OK;
+    }
+}
+
+#[cfg(not(target_os = "redox"))]
+bitflags! {
+    /// `AT_*` constants for use with [`openat`], [`statat`], and other `*at`
+    /// functions.
+    ///
+    /// [`openat`]: crate::fs::openat
+    /// [`statat`]: crate::fs::statat
+    pub struct AtFlags: c::c_int {
+        /// `AT_REMOVEDIR`
+        const REMOVEDIR = c::AT_REMOVEDIR;
+
+        /// `AT_SYMLINK_FOLLOW`
+        const SYMLINK_FOLLOW = c::AT_SYMLINK_FOLLOW;
+
+        /// `AT_SYMLINK_NOFOLLOW`
+        const SYMLINK_NOFOLLOW = c::AT_SYMLINK_NOFOLLOW;
+
+        /// `AT_EMPTY_PATH`
+        #[cfg(any(
+            target_os = "android",
+            target_os = "fuchsia",
+            target_os = "linux",
+        ))]
+        const EMPTY_PATH = c::AT_EMPTY_PATH;
+
+        /// `AT_EACCESS`
+        #[cfg(not(any(target_os = "emscripten", target_os = "android")))]
+        const EACCESS = c::AT_EACCESS;
+
+        /// `AT_STATX_SYNC_AS_STAT`
+        #[cfg(all(target_os = "linux", target_env = "gnu"))]
+        const STATX_SYNC_AS_STAT = c::AT_STATX_SYNC_AS_STAT;
+
+        /// `AT_STATX_FORCE_SYNC`
+        #[cfg(all(target_os = "linux", target_env = "gnu"))]
+        const STATX_FORCE_SYNC = c::AT_STATX_FORCE_SYNC;
+
+        /// `AT_STATX_DONT_SYNC`
+        #[cfg(all(target_os = "linux", target_env = "gnu"))]
+        const STATX_DONT_SYNC = c::AT_STATX_DONT_SYNC;
+    }
+}
+
+bitflags! {
+    /// `S_I*` constants for use with [`openat`], [`chmodat`], and [`fchmod`].
+    ///
+    /// [`openat`]: crate::fs::openat
+    /// [`chmodat`]: crate::fs::chmodat
+    /// [`fchmod`]: crate::fs::fchmod
+    pub struct Mode: RawMode {
+        /// `S_IRWXU`
+        #[cfg(not(target_os = "wasi"))] // WASI doesn't have Unix-style mode flags.
+        const RWXU = c::S_IRWXU as RawMode;
+
+        /// `S_IRUSR`
+        #[cfg(not(target_os = "wasi"))] // WASI doesn't have Unix-style mode flags.
+        const RUSR = c::S_IRUSR as RawMode;
+
+        /// `S_IWUSR`
+        #[cfg(not(target_os = "wasi"))] // WASI doesn't have Unix-style mode flags.
+        const WUSR = c::S_IWUSR as RawMode;
+
+        /// `S_IXUSR`
+        #[cfg(not(target_os = "wasi"))] // WASI doesn't have Unix-style mode flags.
+        const XUSR = c::S_IXUSR as RawMode;
+
+        /// `S_IRWXG`
+        #[cfg(not(target_os = "wasi"))] // WASI doesn't have Unix-style mode flags.
+        const RWXG = c::S_IRWXG as RawMode;
+
+        /// `S_IRGRP`
+        #[cfg(not(target_os = "wasi"))] // WASI doesn't have Unix-style mode flags.
+        const RGRP = c::S_IRGRP as RawMode;
+
+        /// `S_IWGRP`
+        #[cfg(not(target_os = "wasi"))] // WASI doesn't have Unix-style mode flags.
+        const WGRP = c::S_IWGRP as RawMode;
+
+        /// `S_IXGRP`
+        #[cfg(not(target_os = "wasi"))] // WASI doesn't have Unix-style mode flags.
+        const XGRP = c::S_IXGRP as RawMode;
+
+        /// `S_IRWXO`
+        #[cfg(not(target_os = "wasi"))] // WASI doesn't have Unix-style mode flags.
+        const RWXO = c::S_IRWXO as RawMode;
+
+        /// `S_IROTH`
+        #[cfg(not(target_os = "wasi"))] // WASI doesn't have Unix-style mode flags.
+        const ROTH = c::S_IROTH as RawMode;
+
+        /// `S_IWOTH`
+        #[cfg(not(target_os = "wasi"))] // WASI doesn't have Unix-style mode flags.
+        const WOTH = c::S_IWOTH as RawMode;
+
+        /// `S_IXOTH`
+        #[cfg(not(target_os = "wasi"))] // WASI doesn't have Unix-style mode flags.
+        const XOTH = c::S_IXOTH as RawMode;
+
+        /// `S_ISUID`
+        #[cfg(not(target_os = "wasi"))] // WASI doesn't have Unix-style mode flags.
+        const SUID = c::S_ISUID as RawMode;
+
+        /// `S_ISGID`
+        #[cfg(not(target_os = "wasi"))] // WASI doesn't have Unix-style mode flags.
+        const SGID = c::S_ISGID as RawMode;
+
+        /// `S_ISVTX`
+        #[cfg(not(target_os = "wasi"))] // WASI doesn't have Unix-style mode flags.
+        const SVTX = c::S_ISVTX as RawMode;
+    }
+}
+
+impl Mode {
+    /// Construct a `Mode` from the mode bits of the `st_mode` field of
+    /// a `Stat`.
+    #[inline]
+    pub const fn from_raw_mode(st_mode: RawMode) -> Self {
+        Self::from_bits_truncate(st_mode)
+    }
+
+    /// Construct an `st_mode` value from `Stat`.
+    #[inline]
+    pub const fn as_raw_mode(self) -> RawMode {
+        self.bits()
+    }
+}
+
+bitflags! {
+    /// `O_*` constants for use with [`openat`].
+    ///
+    /// [`openat`]: crate::fs::openat
+    pub struct OFlags: c::c_int {
+        /// `O_ACCMODE`
+        const ACCMODE = c::O_ACCMODE;
+
+        /// Similar to `ACCMODE`, but just includes the read/write flags, and
+        /// no other flags.
+        ///
+        /// Some implementations include `O_PATH` in `O_ACCMODE`, when
+        /// sometimes we really just want the read/write bits. Caution is
+        /// indicated, as the presence of `O_PATH` may mean that the read/write
+        /// bits don't have their usual meaning.
+        const RWMODE = c::O_RDONLY | c::O_WRONLY | c::O_RDWR;
+
+        /// `O_APPEND`
+        const APPEND = c::O_APPEND;
+
+        /// `O_CREAT`
+        #[doc(alias = "CREAT")]
+        const CREATE = c::O_CREAT;
+
+        /// `O_DIRECTORY`
+        const DIRECTORY = c::O_DIRECTORY;
+
+        /// `O_DSYNC`
+        #[cfg(not(any(target_os = "dragonfly", target_os = "freebsd", target_os = "redox")))]
+        const DSYNC = c::O_DSYNC;
+
+        /// `O_EXCL`
+        const EXCL = c::O_EXCL;
+
+        /// `O_FSYNC`
+        #[cfg(any(
+            target_os = "dragonfly",
+            target_os = "freebsd",
+            target_os = "ios",
+            all(target_os = "linux", not(target_env = "musl")),
+            target_os = "macos",
+            target_os = "netbsd",
+            target_os = "openbsd",
+        ))]
+        const FSYNC = c::O_FSYNC;
+
+        /// `O_NOFOLLOW`
+        const NOFOLLOW = c::O_NOFOLLOW;
+
+        /// `O_NONBLOCK`
+        const NONBLOCK = c::O_NONBLOCK;
+
+        /// `O_RDONLY`
+        const RDONLY = c::O_RDONLY;
+
+        /// `O_WRONLY`
+        const WRONLY = c::O_WRONLY;
+
+        /// `O_RDWR`
+        const RDWR = c::O_RDWR;
+
+        /// `O_NOCTTY`
+        #[cfg(not(target_os = "redox"))]
+        const NOCTTY = c::O_NOCTTY;
+
+        /// `O_RSYNC`
+        #[cfg(any(
+            target_os = "android",
+            target_os = "emscripten",
+            target_os = "linux",
+            target_os = "netbsd",
+            target_os = "openbsd",
+            target_os = "wasi",
+        ))]
+        const RSYNC = c::O_RSYNC;
+
+        /// `O_SYNC`
+        #[cfg(not(target_os = "redox"))]
+        const SYNC = c::O_SYNC;
+
+        /// `O_TRUNC`
+        const TRUNC = c::O_TRUNC;
+
+        /// `O_PATH`
+        #[cfg(any(
+            target_os = "android",
+            target_os = "emscripten",
+            target_os = "fuchsia",
+            target_os = "linux",
+            target_os = "redox",
+        ))]
+        const PATH = c::O_PATH;
+
+        /// `O_CLOEXEC`
+        const CLOEXEC = c::O_CLOEXEC;
+
+        /// `O_TMPFILE`
+        #[cfg(any(
+            target_os = "android",
+            target_os = "emscripten",
+            target_os = "fuchsia",
+            target_os = "linux",
+        ))]
+        const TMPFILE = c::O_TMPFILE;
+
+        /// `O_NOATIME`
+        #[cfg(any(
+            target_os = "android",
+            target_os = "fuchsia",
+            target_os = "linux",
+        ))]
+        const NOATIME = c::O_NOATIME;
+    }
+}
+
+#[cfg(any(target_os = "ios", target_os = "macos"))]
+bitflags! {
+    /// `CLONE_*` constants for use with [`fclonefileat`].
+    ///
+    /// [`fclonefileat`]: crate::fs::fclonefileat
+    pub struct CloneFlags: c::c_int {
+        /// `CLONE_NOFOLLOW`
+        const NOFOLLOW = 1;
+
+        /// `CLONE_NOOWNERCOPY`
+        const NOOWNERCOPY = 2;
+    }
+}
+
+#[cfg(any(target_os = "ios", target_os = "macos"))]
+mod copyfile {
+    pub(super) const ACL: u32 = 1 << 0;
+    pub(super) const STAT: u32 = 1 << 1;
+    pub(super) const XATTR: u32 = 1 << 2;
+    pub(super) const DATA: u32 = 1 << 3;
+    pub(super) const SECURITY: u32 = STAT | ACL;
+    pub(super) const METADATA: u32 = SECURITY | XATTR;
+    pub(super) const ALL: u32 = METADATA | DATA;
+}
+
+#[cfg(any(target_os = "ios", target_os = "macos"))]
+bitflags! {
+    /// `COPYFILE_*` constants.
+    pub struct CopyfileFlags: c::c_uint {
+        /// `COPYFILE_ACL`
+        const ACL = copyfile::ACL;
+
+        /// `COPYFILE_STAT`
+        const STAT = copyfile::STAT;
+
+        /// `COPYFILE_XATTR`
+        const XATTR = copyfile::XATTR;
+
+        /// `COPYFILE_DATA`
+        const DATA = copyfile::DATA;
+
+        /// `COPYFILE_SECURITY`
+        const SECURITY = copyfile::SECURITY;
+
+        /// `COPYFILE_METADATA`
+        const METADATA = copyfile::METADATA;
+
+        /// `COPYFILE_ALL`
+        const ALL = copyfile::ALL;
+    }
+}
+
+#[cfg(any(target_os = "android", target_os = "linux"))]
+bitflags! {
+    /// `RESOLVE_*` constants for use with [`openat2`].
+    ///
+    /// [`openat2`]: crate::fs::openat2
+    #[derive(Default)]
+    pub struct ResolveFlags: u64 {
+        /// `RESOLVE_NO_XDEV`
+        const NO_XDEV = 0x01;
+
+        /// `RESOLVE_NO_MAGICLINKS`
+        const NO_MAGICLINKS = 0x02;
+
+        /// `RESOLVE_NO_SYMLINKS`
+        const NO_SYMLINKS = 0x04;
+
+        /// `RESOLVE_BENEATH`
+        const BENEATH = 0x08;
+
+        /// `RESOLVE_IN_ROOT`
+        const IN_ROOT = 0x10;
+
+        /// `RESOLVE_CACHED` (since Linux 5.12)
+        const CACHED = 0x20;
+    }
+}
+
+#[cfg(any(target_os = "android", target_os = "linux"))]
+bitflags! {
+    /// `RENAME_*` constants for use with [`renameat_with`].
+    ///
+    /// [`renameat_with`]: crate::fs::renameat_with
+    pub struct RenameFlags: c::c_uint {
+        /// `RENAME_EXCHANGE`
+        const EXCHANGE = c::RENAME_EXCHANGE as _;
+
+        /// `RENAME_NOREPLACE`
+        const NOREPLACE = c::RENAME_NOREPLACE as _;
+
+        /// `RENAME_WHITEOUT`
+        const WHITEOUT = c::RENAME_WHITEOUT as _;
+    }
+}
+
+/// `S_IF*` constants for use with [`mknodat`] and [`Stat`]'s `st_mode` field.
+///
+/// [`mknodat`]: crate::fs::mknodat
+/// [`Stat`]: crate::fs::Stat
+#[derive(Clone, Copy, Debug, PartialEq, Eq)]
+pub enum FileType {
+    /// `S_IFREG`
+    RegularFile = c::S_IFREG as isize,
+
+    /// `S_IFDIR`
+    Directory = c::S_IFDIR as isize,
+
+    /// `S_IFLNK`
+    Symlink = c::S_IFLNK as isize,
+
+    /// `S_IFIFO`
+    #[cfg(not(target_os = "wasi"))] // TODO: Use WASI's `S_IFIFO`.
+    #[doc(alias = "IFO")]
+    Fifo = c::S_IFIFO as isize,
+
+    /// `S_IFSOCK`
+    #[cfg(not(target_os = "wasi"))] // TODO: Use WASI's `S_IFSOCK`.
+    Socket = c::S_IFSOCK as isize,
+
+    /// `S_IFCHR`
+    CharacterDevice = c::S_IFCHR as isize,
+
+    /// `S_IFBLK`
+    BlockDevice = c::S_IFBLK as isize,
+
+    /// An unknown filesystem object.
+    Unknown,
+}
+
+impl FileType {
+    /// Construct a `FileType` from the `S_IFMT` bits of the `st_mode` field of
+    /// a `Stat`.
+    pub const fn from_raw_mode(st_mode: RawMode) -> Self {
+        match (st_mode as c::mode_t) & c::S_IFMT {
+            c::S_IFREG => Self::RegularFile,
+            c::S_IFDIR => Self::Directory,
+            c::S_IFLNK => Self::Symlink,
+            #[cfg(not(target_os = "wasi"))] // TODO: Use WASI's `S_IFIFO`.
+            c::S_IFIFO => Self::Fifo,
+            #[cfg(not(target_os = "wasi"))] // TODO: Use WASI's `S_IFSOCK`.
+            c::S_IFSOCK => Self::Socket,
+            c::S_IFCHR => Self::CharacterDevice,
+            c::S_IFBLK => Self::BlockDevice,
+            _ => Self::Unknown,
+        }
+    }
+
+    /// Construct an `st_mode` value from `Stat`.
+    pub const fn as_raw_mode(self) -> RawMode {
+        match self {
+            Self::RegularFile => c::S_IFREG as RawMode,
+            Self::Directory => c::S_IFDIR as RawMode,
+            Self::Symlink => c::S_IFLNK as RawMode,
+            #[cfg(not(target_os = "wasi"))] // TODO: Use WASI's `S_IFIFO`.
+            Self::Fifo => c::S_IFIFO as RawMode,
+            #[cfg(not(target_os = "wasi"))] // TODO: Use WASI's `S_IFSOCK`.
+            Self::Socket => c::S_IFSOCK as RawMode,
+            Self::CharacterDevice => c::S_IFCHR as RawMode,
+            Self::BlockDevice => c::S_IFBLK as RawMode,
+            Self::Unknown => c::S_IFMT as RawMode,
+        }
+    }
+
+    /// Construct a `FileType` from the `d_type` field of a `c::dirent`.
+    #[cfg(not(any(target_os = "illumos", target_os = "redox")))]
+    pub(crate) const fn from_dirent_d_type(d_type: u8) -> Self {
+        match d_type {
+            c::DT_REG => Self::RegularFile,
+            c::DT_DIR => Self::Directory,
+            c::DT_LNK => Self::Symlink,
+            #[cfg(not(target_os = "wasi"))] // TODO: Use WASI's `DT_SOCK`.
+            c::DT_SOCK => Self::Socket,
+            #[cfg(not(target_os = "wasi"))] // TODO: Use WASI's `DT_FIFO`.
+            c::DT_FIFO => Self::Fifo,
+            c::DT_CHR => Self::CharacterDevice,
+            c::DT_BLK => Self::BlockDevice,
+            // c::DT_UNKNOWN |
+            _ => Self::Unknown,
+        }
+    }
+}
+
+/// `POSIX_FADV_*` constants for use with [`fadvise`].
+///
+/// [`fadvise`]: crate::fs::fadvise
+#[cfg(not(any(
+    target_os = "dragonfly",
+    target_os = "illumos",
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "netbsd",
+    target_os = "openbsd",
+    target_os = "redox",
+)))]
+#[derive(Debug, Copy, Clone, Eq, PartialEq)]
+#[repr(u32)]
+pub enum Advice {
+    /// `POSIX_FADV_NORMAL`
+    Normal = c::POSIX_FADV_NORMAL as c::c_uint,
+
+    /// `POSIX_FADV_SEQUENTIAL`
+    Sequential = c::POSIX_FADV_SEQUENTIAL as c::c_uint,
+
+    /// `POSIX_FADV_RANDOM`
+    Random = c::POSIX_FADV_RANDOM as c::c_uint,
+
+    /// `POSIX_FADV_NOREUSE`
+    NoReuse = c::POSIX_FADV_NOREUSE as c::c_uint,
+
+    /// `POSIX_FADV_WILLNEED`
+    WillNeed = c::POSIX_FADV_WILLNEED as c::c_uint,
+
+    /// `POSIX_FADV_DONTNEED`
+    DontNeed = c::POSIX_FADV_DONTNEED as c::c_uint,
+}
+
+#[cfg(any(target_os = "android", target_os = "freebsd", target_os = "linux"))]
+bitflags! {
+    /// `MFD_*` constants for use with [`memfd_create`].
+    ///
+    /// [`memfd_create`]: crate::fs::memfd_create
+    pub struct MemfdFlags: c::c_uint {
+        /// `MFD_CLOEXEC`
+        const CLOEXEC = c::MFD_CLOEXEC;
+
+        /// `MFD_ALLOW_SEALING`
+        const ALLOW_SEALING = c::MFD_ALLOW_SEALING;
+
+        /// `MFD_HUGETLB` (since Linux 4.14)
+        const HUGETLB = c::MFD_HUGETLB;
+
+        /// `MFD_HUGE_64KB`
+        #[cfg(any(target_os = "android", target_os = "linux"))]
+        const HUGE_64KB = c::MFD_HUGE_64KB;
+        /// `MFD_HUGE_512JB`
+        #[cfg(any(target_os = "android", target_os = "linux"))]
+        const HUGE_512KB = c::MFD_HUGE_512KB;
+        /// `MFD_HUGE_1MB`
+        #[cfg(any(target_os = "android", target_os = "linux"))]
+        const HUGE_1MB = c::MFD_HUGE_1MB;
+        /// `MFD_HUGE_2MB`
+        #[cfg(any(target_os = "android", target_os = "linux"))]
+        const HUGE_2MB = c::MFD_HUGE_2MB;
+        /// `MFD_HUGE_8MB`
+        #[cfg(any(target_os = "android", target_os = "linux"))]
+        const HUGE_8MB = c::MFD_HUGE_8MB;
+        /// `MFD_HUGE_16MB`
+        #[cfg(any(target_os = "android", target_os = "linux"))]
+        const HUGE_16MB = c::MFD_HUGE_16MB;
+        /// `MFD_HUGE_32MB`
+        #[cfg(any(target_os = "android", target_os = "linux"))]
+        const HUGE_32MB = c::MFD_HUGE_32MB;
+        /// `MFD_HUGE_256MB`
+        #[cfg(any(target_os = "android", target_os = "linux"))]
+        const HUGE_256MB = c::MFD_HUGE_256MB;
+        /// `MFD_HUGE_512MB`
+        #[cfg(any(target_os = "android", target_os = "linux"))]
+        const HUGE_512MB = c::MFD_HUGE_512MB;
+        /// `MFD_HUGE_1GB`
+        #[cfg(any(target_os = "android", target_os = "linux"))]
+        const HUGE_1GB = c::MFD_HUGE_1GB;
+        /// `MFD_HUGE_2GB`
+        #[cfg(any(target_os = "android", target_os = "linux"))]
+        const HUGE_2GB = c::MFD_HUGE_2GB;
+        /// `MFD_HUGE_16GB`
+        #[cfg(any(target_os = "android", target_os = "linux"))]
+        const HUGE_16GB = c::MFD_HUGE_16GB;
+    }
+}
+
+#[cfg(any(
+    target_os = "android",
+    target_os = "freebsd",
+    target_os = "fuchsia",
+    target_os = "linux",
+))]
+bitflags! {
+    /// `F_SEAL_*` constants for use with [`fcntl_add_seals`] and
+    /// [`fcntl_get_seals`].
+    ///
+    /// [`fcntl_add_seals`]: crate::fs::fcntl_add_seals
+    /// [`fcntl_get_seals`]: crate::fs::fcntl_get_seals
+    pub struct SealFlags: i32 {
+       /// `F_SEAL_SEAL`.
+       const SEAL = c::F_SEAL_SEAL;
+       /// `F_SEAL_SHRINK`.
+       const SHRINK = c::F_SEAL_SHRINK;
+       /// `F_SEAL_GROW`.
+       const GROW = c::F_SEAL_GROW;
+       /// `F_SEAL_WRITE`.
+       const WRITE = c::F_SEAL_WRITE;
+       /// `F_SEAL_FUTURE_WRITE` (since Linux 5.1)
+       #[cfg(any(target_os = "android", target_os = "linux"))]
+       const FUTURE_WRITE = c::F_SEAL_FUTURE_WRITE;
+    }
+}
+
+#[cfg(all(target_os = "linux", target_env = "gnu"))]
+bitflags! {
+    /// `STATX_*` constants for use with [`statx`].
+    ///
+    /// [`statx`]: crate::fs::statx
+    pub struct StatxFlags: u32 {
+        /// `STATX_TYPE`
+        const TYPE = c::STATX_TYPE;
+
+        /// `STATX_MODE`
+        const MODE = c::STATX_MODE;
+
+        /// `STATX_NLINK`
+        const NLINK = c::STATX_NLINK;
+
+        /// `STATX_UID`
+        const UID = c::STATX_UID;
+
+        /// `STATX_GID`
+        const GID = c::STATX_GID;
+
+        /// `STATX_ATIME`
+        const ATIME = c::STATX_ATIME;
+
+        /// `STATX_MTIME`
+        const MTIME = c::STATX_MTIME;
+
+        /// `STATX_CTIME`
+        const CTIME = c::STATX_CTIME;
+
+        /// `STATX_INO`
+        const INO = c::STATX_INO;
+
+        /// `STATX_SIZE`
+        const SIZE = c::STATX_SIZE;
+
+        /// `STATX_BLOCKS`
+        const BLOCKS = c::STATX_BLOCKS;
+
+        /// `STATX_BASIC_STATS`
+        const BASIC_STATS = c::STATX_BASIC_STATS;
+
+        /// `STATX_BTIME`
+        const BTIME = c::STATX_BTIME;
+
+        /// `STATX_MNT_ID` (since Linux 5.8)
+        const MNT_ID = c::STATX_MNT_ID;
+
+        /// `STATX_ALL`
+        const ALL = c::STATX_ALL;
+    }
+}
+
+#[cfg(any(
+    target_os = "android",
+    all(target_os = "linux", not(target_env = "gnu")),
+))]
+bitflags! {
+    /// `STATX_*` constants for use with [`statx`].
+    ///
+    /// [`statx`]: crate::fs::statx
+    pub struct StatxFlags: u32 {
+        /// `STATX_TYPE`
+        const TYPE = 0x0001;
+
+        /// `STATX_MODE`
+        const MODE = 0x0002;
+
+        /// `STATX_NLINK`
+        const NLINK = 0x0004;
+
+        /// `STATX_UID`
+        const UID = 0x0008;
+
+        /// `STATX_GID`
+        const GID = 0x0010;
+
+        /// `STATX_ATIME`
+        const ATIME = 0x0020;
+
+        /// `STATX_MTIME`
+        const MTIME = 0x0040;
+
+        /// `STATX_CTIME`
+        const CTIME = 0x0080;
+
+        /// `STATX_INO`
+        const INO = 0x0100;
+
+        /// `STATX_SIZE`
+        const SIZE = 0x0200;
+
+        /// `STATX_BLOCKS`
+        const BLOCKS = 0x0400;
+
+        /// `STATX_BASIC_STATS`
+        const BASIC_STATS = 0x07ff;
+
+        /// `STATX_BTIME`
+        const BTIME = 0x800;
+
+        /// `STATX_MNT_ID` (since Linux 5.8)
+        const MNT_ID = 0x1000;
+
+        /// `STATX_ALL`
+        const ALL = 0xfff;
+    }
+}
+
+#[cfg(not(any(
+    target_os = "illumos",
+    target_os = "netbsd",
+    target_os = "openbsd",
+    target_os = "redox",
+)))]
+bitflags! {
+    /// `FALLOC_FL_*` constants for use with [`fallocate`].
+    ///
+    /// [`fallocate`]: crate::fs::fallocate
+    pub struct FallocateFlags: i32 {
+        /// `FALLOC_FL_KEEP_SIZE`
+        #[cfg(not(any(
+            target_os = "dragonfly",
+            target_os = "freebsd",
+            target_os = "ios",
+            target_os = "macos",
+            target_os = "netbsd",
+            target_os = "openbsd",
+            target_os = "wasi",
+        )))]
+        const KEEP_SIZE = c::FALLOC_FL_KEEP_SIZE;
+        /// `FALLOC_FL_PUNCH_HOLE`
+        #[cfg(not(any(
+            target_os = "dragonfly",
+            target_os = "freebsd",
+            target_os = "ios",
+            target_os = "macos",
+            target_os = "netbsd",
+            target_os = "openbsd",
+            target_os = "wasi",
+        )))]
+        const PUNCH_HOLE = c::FALLOC_FL_PUNCH_HOLE;
+        /// `FALLOC_FL_NO_HIDE_STALE`
+        #[cfg(not(any(
+            target_os = "dragonfly",
+            target_os = "freebsd",
+            target_os = "ios",
+            target_os = "linux",
+            target_os = "macos",
+            target_os = "netbsd",
+            target_os = "openbsd",
+            target_os = "emscripten",
+            target_os = "fuchsia",
+            target_os = "wasi",
+        )))]
+        const NO_HIDE_STALE = c::FALLOC_FL_NO_HIDE_STALE;
+        /// `FALLOC_FL_COLLAPSE_RANGE`
+        #[cfg(not(any(
+            target_os = "dragonfly",
+            target_os = "freebsd",
+            target_os = "ios",
+            target_os = "macos",
+            target_os = "netbsd",
+            target_os = "openbsd",
+            target_os = "emscripten",
+            target_os = "wasi",
+        )))]
+        const COLLAPSE_RANGE = c::FALLOC_FL_COLLAPSE_RANGE;
+        /// `FALLOC_FL_ZERO_RANGE`
+        #[cfg(not(any(
+            target_os = "dragonfly",
+            target_os = "freebsd",
+            target_os = "ios",
+            target_os = "macos",
+            target_os = "netbsd",
+            target_os = "openbsd",
+            target_os = "emscripten",
+            target_os = "wasi",
+        )))]
+        const ZERO_RANGE = c::FALLOC_FL_ZERO_RANGE;
+        /// `FALLOC_FL_INSERT_RANGE`
+        #[cfg(not(any(
+            target_os = "dragonfly",
+            target_os = "freebsd",
+            target_os = "ios",
+            target_os = "macos",
+            target_os = "netbsd",
+            target_os = "openbsd",
+            target_os = "emscripten",
+            target_os = "wasi",
+        )))]
+        const INSERT_RANGE = c::FALLOC_FL_INSERT_RANGE;
+        /// `FALLOC_FL_UNSHARE_RANGE`
+        #[cfg(not(any(
+            target_os = "dragonfly",
+            target_os = "freebsd",
+            target_os = "ios",
+            target_os = "macos",
+            target_os = "netbsd",
+            target_os = "openbsd",
+            target_os = "emscripten",
+            target_os = "wasi",
+        )))]
+        const UNSHARE_RANGE = c::FALLOC_FL_UNSHARE_RANGE;
+    }
+}
+
+/// `LOCK_*` constants for use with [`flock`]
+///
+/// [`flock`]: crate::fs::flock
+#[cfg(not(target_os = "wasi"))]
+#[derive(Clone, Copy, Debug, PartialEq, Eq)]
+#[repr(i32)]
+pub enum FlockOperation {
+    /// `LOCK_SH`
+    LockShared = c::LOCK_SH,
+    /// `LOCK_EX`
+    LockExclusive = c::LOCK_EX,
+    /// `LOCK_UN`
+    Unlock = c::LOCK_UN,
+    /// `LOCK_SH | LOCK_NB`
+    NonBlockingLockShared = c::LOCK_SH | c::LOCK_NB,
+    /// `LOCK_EX | LOCK_NB`
+    NonBlockingLockExclusive = c::LOCK_EX | c::LOCK_NB,
+    /// `LOCK_UN | LOCK_NB`
+    NonBlockingUnlock = c::LOCK_UN | c::LOCK_NB,
+}
+
+/// `struct stat` for use with [`statat`] and [`fstat`].
+///
+/// [`statat`]: crate::fs::statat
+/// [`fstat`]: crate::fs::fstat
+#[cfg(not(any(
+    target_os = "android",
+    target_os = "linux",
+    target_os = "emscripten",
+    target_os = "l4re",
+)))]
+pub type Stat = c::stat;
+
+/// `struct stat` for use with [`statat`] and [`fstat`].
+///
+/// [`statat`]: crate::fs::statat
+/// [`fstat`]: crate::fs::fstat
+#[cfg(any(
+    all(
+        any(target_os = "android", target_os = "linux"),
+        target_pointer_width = "64",
+    ),
+    target_os = "emscripten",
+    target_os = "l4re",
+))]
+pub type Stat = c::stat64;
+
+/// `struct stat` for use with [`statat`] and [`fstat`].
+///
+/// [`statat`]: crate::fs::statat
+/// [`fstat`]: crate::fs::fstat
+// On 32-bit, Linux's `struct stat64` has a 32-bit `st_mtime` and friends, so
+// we use our own struct, populated from `statx` where possible, to avoid the
+// y2038 bug.
+#[cfg(all(
+    any(target_os = "android", target_os = "linux"),
+    target_pointer_width = "32",
+))]
+#[repr(C)]
+#[derive(Debug, Copy, Clone)]
+#[allow(missing_docs)]
+pub struct Stat {
+    pub st_dev: u64,
+    pub st_mode: u32,
+    pub st_nlink: u32,
+    pub st_uid: u32,
+    pub st_gid: u32,
+    pub st_rdev: u64,
+    pub st_size: i64,
+    pub st_blksize: u32,
+    pub st_blocks: u64,
+    pub st_atime: u64,
+    pub st_atime_nsec: u32,
+    pub st_mtime: u64,
+    pub st_mtime_nsec: u32,
+    pub st_ctime: u64,
+    pub st_ctime_nsec: u32,
+    pub st_ino: u64,
+}
+
+/// `struct statfs` for use with [`fstatfs`].
+///
+/// [`fstatfs`]: crate::fs::fstatfs
+#[cfg(not(any(
+    target_os = "android",
+    target_os = "emscripten",
+    target_os = "illumos",
+    target_os = "linux",
+    target_os = "l4re",
+    target_os = "netbsd",
+    target_os = "redox",
+    target_os = "wasi",
+)))]
+#[allow(clippy::module_name_repetitions)]
+pub type StatFs = c::statfs;
+
+/// `struct statfs` for use with [`fstatfs`].
+///
+/// [`fstatfs`]: crate::fs::fstatfs
+#[cfg(any(
+    target_os = "android",
+    target_os = "linux",
+    target_os = "emscripten",
+    target_os = "l4re",
+))]
+pub type StatFs = c::statfs64;
+
+/// `struct statx` for use with [`statx`].
+///
+/// [`statx`]: crate::fs::statx
+#[cfg(all(target_os = "linux", target_env = "gnu"))]
+// Use the glibc `struct statx`.
+pub type Statx = c::statx;
+
+/// `struct statx_timestamp` for use with [`Statx`].
+#[cfg(all(target_os = "linux", target_env = "gnu"))]
+// Use the glibc `struct statx_timestamp`.
+pub type StatxTimestamp = c::statx;
+
+/// `struct statx` for use with [`statx`].
+///
+/// [`statx`]: crate::fs::statx
+// Non-glibc ABIs don't currently declare a `struct statx`, so we declare it
+// ourselves.
+#[cfg(any(
+    target_os = "android",
+    all(target_os = "linux", not(target_env = "gnu")),
+))]
+#[repr(C)]
+#[allow(missing_docs)]
+pub struct Statx {
+    pub stx_mask: u32,
+    pub stx_blksize: u32,
+    pub stx_attributes: u64,
+    pub stx_nlink: u32,
+    pub stx_uid: u32,
+    pub stx_gid: u32,
+    pub stx_mode: u16,
+    __statx_pad1: [u16; 1],
+    pub stx_ino: u64,
+    pub stx_size: u64,
+    pub stx_blocks: u64,
+    pub stx_attributes_mask: u64,
+    pub stx_atime: StatxTimestamp,
+    pub stx_btime: StatxTimestamp,
+    pub stx_ctime: StatxTimestamp,
+    pub stx_mtime: StatxTimestamp,
+    pub stx_rdev_major: u32,
+    pub stx_rdev_minor: u32,
+    pub stx_dev_major: u32,
+    pub stx_dev_minor: u32,
+    pub stx_mnt_id: u64,
+    __statx_pad2: u64,
+    __statx_pad3: [u64; 12],
+}
+
+/// `struct statx_timestamp` for use with [`Statx`].
+// Non-glibc ABIs don't currently declare a `struct statx_timestamp`, so we
+// declare it ourselves.
+#[cfg(any(
+    target_os = "android",
+    all(target_os = "linux", not(target_env = "gnu")),
+))]
+#[repr(C)]
+#[allow(missing_docs)]
+pub struct StatxTimestamp {
+    pub tv_sec: i64,
+    pub tv_nsec: u32,
+    pub __statx_timestamp_pad1: [i32; 1],
+}
+
+/// `mode_t`
+#[cfg(not(all(target_os = "android", target_pointer_width = "32")))]
+pub type RawMode = c::mode_t;
+
+/// `mode_t`
+#[cfg(all(target_os = "android", target_pointer_width = "32"))]
+pub type RawMode = c::c_uint;
+
+/// `dev_t`
+#[cfg(not(all(target_os = "android", target_pointer_width = "32")))]
+pub type Dev = c::dev_t;
+
+/// `dev_t`
+#[cfg(all(target_os = "android", target_pointer_width = "32"))]
+pub type Dev = c::c_ulonglong;
+
+/// `__fsword_t`
+#[cfg(all(
+    target_os = "linux",
+    not(target_env = "musl"),
+    not(target_arch = "s390x"),
+))]
+pub type FsWord = c::__fsword_t;
+
+/// `__fsword_t`
+#[cfg(all(
+    any(target_os = "android", all(target_os = "linux", target_env = "musl")),
+    target_pointer_width = "32",
+))]
+pub type FsWord = u32;
+
+/// `__fsword_t`
+#[cfg(all(
+    any(target_os = "android", all(target_os = "linux", target_env = "musl")),
+    not(target_arch = "s390x"),
+    target_pointer_width = "64",
+))]
+pub type FsWord = u64;
+
+/// `__fsword_t`
+// s390x uses `u32` for `statfs` entries, even though `__fsword_t` is `u64`.
+#[cfg(all(target_os = "linux", target_arch = "s390x"))]
+pub type FsWord = u32;
+
+#[cfg(not(target_os = "redox"))]
+pub use c::{UTIME_NOW, UTIME_OMIT};
+
+/// `PROC_SUPER_MAGIC`—The magic number for the procfs filesystem.
+#[cfg(all(
+    any(target_os = "android", target_os = "linux"),
+    not(target_env = "musl"),
+))]
+pub const PROC_SUPER_MAGIC: FsWord = c::PROC_SUPER_MAGIC as FsWord;
+
+/// `NFS_SUPER_MAGIC`—The magic number for the NFS filesystem.
+#[cfg(all(
+    any(target_os = "android", target_os = "linux"),
+    not(target_env = "musl"),
+))]
+pub const NFS_SUPER_MAGIC: FsWord = c::NFS_SUPER_MAGIC as FsWord;
+
+/// `PROC_SUPER_MAGIC`—The magic number for the procfs filesystem.
+#[cfg(all(any(target_os = "android", target_os = "linux"), target_env = "musl"))]
+pub const PROC_SUPER_MAGIC: FsWord = 0x0000_9fa0;
+
+/// `NFS_SUPER_MAGIC`—The magic number for the NFS filesystem.
+#[cfg(all(any(target_os = "android", target_os = "linux"), target_env = "musl"))]
+pub const NFS_SUPER_MAGIC: FsWord = 0x0000_6969;
+
+/// `copyfile_state_t`—State for use with [`fcopyfile`].
+///
+/// [`fcopyfile`]: crate::fs::fcopyfile
+#[cfg(any(target_os = "ios", target_os = "macos"))]
+#[allow(non_camel_case_types)]
+#[repr(transparent)]
+#[derive(Copy, Clone)]
+pub struct copyfile_state_t(pub(crate) *mut c::c_void);
diff --git a/vendor/rustix/src/imp/libc/io/epoll.rs b/vendor/rustix/src/imp/libc/io/epoll.rs
new file mode 100644
index 000000000..a95e6b5cd
--- /dev/null
+++ b/vendor/rustix/src/imp/libc/io/epoll.rs
@@ -0,0 +1,568 @@
+//! epoll support.
+//!
+//! This is an experiment, and it isn't yet clear whether epoll is the right
+//! level of abstraction at which to introduce safety. But it works fairly well
+//! in simple examples 🙂.
+//!
+//! # Examples
+//!
+//! ```rust,no_run
+//! # #![cfg_attr(io_lifetimes_use_std, feature(io_safety))]
+//! # #[cfg(feature = "net")]
+//! # fn main() -> std::io::Result<()> {
+//! use io_lifetimes::AsFd;
+//! use rustix::io::epoll::{self, Epoll};
+//! use rustix::io::{ioctl_fionbio, read, write};
+//! use rustix::net::{
+//!     accept, bind_v4, listen, socket, AddressFamily, Ipv4Addr, Protocol, SocketAddrV4,
+//!     SocketType,
+//! };
+//! use std::os::unix::io::AsRawFd;
+//!
+//! // Create a socket and listen on it.
+//! let listen_sock = socket(AddressFamily::INET, SocketType::STREAM, Protocol::default())?;
+//! bind_v4(&listen_sock, &SocketAddrV4::new(Ipv4Addr::LOCALHOST, 0))?;
+//! listen(&listen_sock, 1)?;
+//!
+//! // Create an epoll object. Using `Owning` here means the epoll object will
+//! // take ownership of the file descriptors registered with it.
+//! let epoll = Epoll::new(epoll::CreateFlags::CLOEXEC, epoll::Owning::new())?;
+//!
+//! // Remember the socket raw fd, which we use for comparisons only.
+//! let raw_listen_sock = listen_sock.as_fd().as_raw_fd();
+//!
+//! // Register the socket with the epoll object.
+//! epoll.add(listen_sock, epoll::EventFlags::IN)?;
+//!
+//! // Process events.
+//! let mut event_list = epoll::EventVec::with_capacity(4);
+//! loop {
+//!     epoll.wait(&mut event_list, -1)?;
+//!     for (_event_flags, target) in &event_list {
+//!         if target.as_raw_fd() == raw_listen_sock {
+//!             // Accept a new connection, set it to non-blocking, and
+//!             // register to be notified when it's ready to write to.
+//!             let conn_sock = accept(&*target)?;
+//!             ioctl_fionbio(&conn_sock, true)?;
+//!             epoll.add(conn_sock, epoll::EventFlags::OUT | epoll::EventFlags::ET)?;
+//!         } else {
+//!             // Write a message to the stream and then unregister it.
+//!             write(&*target, b"hello\n")?;
+//!             let _ = epoll.del(target)?;
+//!         }
+//!     }
+//! }
+//! # }
+//! # #[cfg(not(feature = "net"))]
+//! # fn main() {}
+//! ```
+
+use super::super::c;
+use super::super::conv::{ret, ret_owned_fd, ret_u32};
+use crate::fd::{AsFd, AsRawFd, BorrowedFd, RawFd};
+#[cfg(not(feature = "rustc-dep-of-std"))]
+use crate::fd::{FromFd, FromRawFd, IntoFd, IntoRawFd};
+use crate::io::{self, OwnedFd};
+use alloc::vec::Vec;
+use bitflags::bitflags;
+use core::convert::TryInto;
+use core::fmt;
+use core::marker::PhantomData;
+use core::ops::Deref;
+use core::ptr::{null, null_mut};
+
+bitflags! {
+    /// `EPOLL_*` for use with [`Epoll::new`].
+    pub struct CreateFlags: c::c_int {
+        /// `EPOLL_CLOEXEC`
+        const CLOEXEC = c::EPOLL_CLOEXEC;
+    }
+}
+
+bitflags! {
+    /// `EPOLL*` for use with [`Epoll::add`].
+    #[derive(Default)]
+    pub struct EventFlags: u32 {
+        /// `EPOLLIN`
+        const IN = c::EPOLLIN as u32;
+
+        /// `EPOLLOUT`
+        const OUT = c::EPOLLOUT as u32;
+
+        /// `EPOLLPRI`
+        const PRI = c::EPOLLPRI as u32;
+
+        /// `EPOLLERR`
+        const ERR = c::EPOLLERR as u32;
+
+        /// `EPOLLHUP`
+        const HUP = c::EPOLLHUP as u32;
+
+        /// `EPOLLET`
+        const ET = c::EPOLLET as u32;
+
+        /// `EPOLLONESHOT`
+        const ONESHOT = c::EPOLLONESHOT as u32;
+
+        /// `EPOLLWAKEUP`
+        const WAKEUP = c::EPOLLWAKEUP as u32;
+
+        /// `EPOLLEXCLUSIVE`
+        #[cfg(not(target_os = "android"))]
+        const EXCLUSIVE = c::EPOLLEXCLUSIVE as u32;
+    }
+}
+
+/// A reference to a `T`.
+pub struct Ref<'a, T> {
+    t: T,
+    _phantom: PhantomData<&'a T>,
+}
+
+impl<'a, T> Ref<'a, T> {
+    #[inline]
+    fn new(t: T) -> Self {
+        Self {
+            t,
+            _phantom: PhantomData,
+        }
+    }
+
+    #[inline]
+    fn consume(self) -> T {
+        self.t
+    }
+}
+
+impl<'a, T> Deref for Ref<'a, T> {
+    type Target = T;
+
+    #[inline]
+    fn deref(&self) -> &T {
+        &self.t
+    }
+}
+
+impl<'a, T: fmt::Debug> fmt::Debug for Ref<'a, T> {
+    fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result {
+        self.t.fmt(fmt)
+    }
+}
+
+/// A trait for data stored within an [`Epoll`] instance.
+pub trait Context {
+    /// The type of an element owned by this context.
+    type Data;
+
+    /// The type of a value used to refer to an element owned by this context.
+    type Target: AsFd;
+
+    /// Assume ownership of `data`, and returning a `Target`.
+    fn acquire<'call>(&self, data: Self::Data) -> Ref<'call, Self::Target>;
+
+    /// Encode `target` as a `u64`. The only requirement on this value is that
+    /// it be decodable by `decode`.
+    fn encode(&self, target: Ref<'_, Self::Target>) -> u64;
+
+    /// Decode `raw`, which is a value encoded by `encode`, into a `Target`.
+    ///
+    /// # Safety
+    ///
+    /// `raw` must be a `u64` value returned from `encode`, from the same
+    /// context, and within the context's lifetime.
+    unsafe fn decode<'call>(&self, raw: u64) -> Ref<'call, Self::Target>;
+
+    /// Release ownership of the value referred to by `target` and return it.
+    fn release(&self, target: Ref<'_, Self::Target>) -> Self::Data;
+}
+
+/// A type implementing [`Context`] where the `Data` type is `BorrowedFd<'a>`.
+pub struct Borrowing<'a> {
+    _phantom: PhantomData<BorrowedFd<'a>>,
+}
+
+impl<'a> Context for Borrowing<'a> {
+    type Data = BorrowedFd<'a>;
+    type Target = BorrowedFd<'a>;
+
+    #[inline]
+    fn acquire<'call>(&self, data: Self::Data) -> Ref<'call, Self::Target> {
+        Ref::new(data)
+    }
+
+    #[inline]
+    fn encode(&self, target: Ref<'_, Self::Target>) -> u64 {
+        target.as_raw_fd() as u64
+    }
+
+    #[inline]
+    unsafe fn decode<'call>(&self, raw: u64) -> Ref<'call, Self::Target> {
+        Ref::new(BorrowedFd::<'a>::borrow_raw(raw as RawFd))
+    }
+
+    #[inline]
+    fn release(&self, target: Ref<'_, Self::Target>) -> Self::Data {
+        target.consume()
+    }
+}
+
+/// A type implementing [`Context`] where the `Data` type is `T`, a type
+/// implementing `IntoFd` and `FromFd`.
+///
+/// This may be used with [`OwnedFd`], or higher-level types like
+/// [`std::fs::File`] or [`std::net::TcpStream`].
+#[cfg(not(feature = "rustc-dep-of-std"))]
+pub struct Owning<'context, T: IntoFd + FromFd> {
+    _phantom: PhantomData<&'context T>,
+}
+
+#[cfg(not(feature = "rustc-dep-of-std"))]
+impl<'context, T: IntoFd + FromFd> Owning<'context, T> {
+    /// Creates a new empty `Owning`.
+    #[allow(clippy::new_without_default)] // This is a specialized type that doesn't need to be generically constructible.
+    #[inline]
+    pub fn new() -> Self {
+        Self {
+            _phantom: PhantomData,
+        }
+    }
+}
+
+#[cfg(not(feature = "rustc-dep-of-std"))]
+impl<'context, T: AsFd + IntoFd + FromFd> Context for Owning<'context, T> {
+    type Data = T;
+    type Target = BorrowedFd<'context>;
+
+    #[inline]
+    fn acquire<'call>(&self, data: Self::Data) -> Ref<'call, Self::Target> {
+        let raw_fd = data.into_fd().into_raw_fd();
+        // Safety: `epoll` will assign ownership of the file descriptor to the
+        // kernel epoll object. We use `IntoFd`+`IntoRawFd` to consume the
+        // `Data` and extract the raw file descriptor and then "borrow" it
+        // with `borrow_raw` knowing that the borrow won't outlive the
+        // kernel epoll object.
+        unsafe { Ref::new(BorrowedFd::<'context>::borrow_raw(raw_fd)) }
+    }
+
+    #[inline]
+    fn encode(&self, target: Ref<'_, Self::Target>) -> u64 {
+        target.as_fd().as_raw_fd() as u64
+    }
+
+    #[inline]
+    unsafe fn decode<'call>(&self, raw: u64) -> Ref<'call, Self::Target> {
+        Ref::new(BorrowedFd::<'context>::borrow_raw(raw as RawFd))
+    }
+
+    #[inline]
+    fn release(&self, target: Ref<'_, Self::Target>) -> Self::Data {
+        // The file descriptor was held by the kernel epoll object and is now
+        // being released, so we can create a new `OwnedFd` that assumes
+        // ownership.
+        let raw_fd = target.consume().as_raw_fd();
+        unsafe { T::from_fd(io_lifetimes::OwnedFd::from_raw_fd(raw_fd)) }
+    }
+}
+
+/// An "epoll", an interface to an OS object allowing one to repeatedly wait
+/// for events from a set of file descriptors efficiently.
+pub struct Epoll<Context: self::Context> {
+    epoll_fd: OwnedFd,
+    context: Context,
+}
+
+impl<Context: self::Context> Epoll<Context> {
+    /// `epoll_create1(flags)`—Creates a new `Epoll`.
+    ///
+    /// Use the [`CreateFlags::CLOEXEC`] flag to prevent the resulting file
+    /// descriptor from being implicitly passed across `exec` boundaries.
+    #[inline]
+    #[doc(alias = "epoll_create1")]
+    pub fn new(flags: CreateFlags, context: Context) -> io::Result<Self> {
+        // Safety: We're calling `epoll_create1` via FFI and we know how it
+        // behaves.
+        unsafe {
+            Ok(Self {
+                epoll_fd: ret_owned_fd(c::epoll_create1(flags.bits()))?,
+                context,
+            })
+        }
+    }
+
+    /// `epoll_ctl(self, EPOLL_CTL_ADD, data, event)`—Adds an element to an
+    /// `Epoll`.
+    ///
+    /// This registers interest in any of the events set in `events` occurring
+    /// on the file descriptor associated with `data`.
+    #[doc(alias = "epoll_ctl")]
+    pub fn add(
+        &self,
+        data: Context::Data,
+        event_flags: EventFlags,
+    ) -> io::Result<Ref<'_, Context::Target>> {
+        // Safety: We're calling `epoll_ctl` via FFI and we know how it
+        // behaves.
+        unsafe {
+            let target = self.context.acquire(data);
+            let raw_fd = target.as_fd().as_raw_fd();
+            let encoded = self.context.encode(target);
+            ret(c::epoll_ctl(
+                self.epoll_fd.as_fd().as_raw_fd(),
+                c::EPOLL_CTL_ADD,
+                raw_fd,
+                &mut c::epoll_event {
+                    events: event_flags.bits(),
+                    r#u64: encoded,
+                },
+            ))?;
+            Ok(self.context.decode(encoded))
+        }
+    }
+
+    /// `epoll_ctl(self, EPOLL_CTL_MOD, target, event)`—Modifies an element in
+    /// this `Epoll`.
+    ///
+    /// This sets the events of interest with `target` to `events`.
+    #[doc(alias = "epoll_ctl")]
+    pub fn mod_(
+        &self,
+        target: Ref<'_, Context::Target>,
+        event_flags: EventFlags,
+    ) -> io::Result<()> {
+        let raw_fd = target.as_fd().as_raw_fd();
+        let encoded = self.context.encode(target);
+        // Safety: We're calling `epoll_ctl` via FFI and we know how it
+        // behaves.
+        unsafe {
+            ret(c::epoll_ctl(
+                self.epoll_fd.as_fd().as_raw_fd(),
+                c::EPOLL_CTL_MOD,
+                raw_fd,
+                &mut c::epoll_event {
+                    events: event_flags.bits(),
+                    r#u64: encoded,
+                },
+            ))
+        }
+    }
+
+    /// `epoll_ctl(self, EPOLL_CTL_DEL, target, NULL)`—Removes an element in
+    /// this `Epoll`.
+    ///
+    /// This also returns the owning `Data`.
+    #[doc(alias = "epoll_ctl")]
+    pub fn del(&self, target: Ref<'_, Context::Target>) -> io::Result<Context::Data> {
+        // Safety: We're calling `epoll_ctl` via FFI and we know how it
+        // behaves.
+        unsafe {
+            let raw_fd = target.as_fd().as_raw_fd();
+            ret(c::epoll_ctl(
+                self.epoll_fd.as_fd().as_raw_fd(),
+                c::EPOLL_CTL_DEL,
+                raw_fd,
+                null_mut(),
+            ))?;
+        }
+        Ok(self.context.release(target))
+    }
+
+    /// `epoll_wait(self, events, timeout)`—Waits for registered events of
+    /// interest.
+    ///
+    /// For each event of interest, an element is written to `events`. On
+    /// success, this returns the number of written elements.
+    #[doc(alias = "epoll_wait")]
+    pub fn wait<'context>(
+        &'context self,
+        event_list: &mut EventVec<'context, Context>,
+        timeout: c::c_int,
+    ) -> io::Result<()> {
+        // Safety: We're calling `epoll_wait` via FFI and we know how it
+        // behaves.
+        unsafe {
+            event_list.events.set_len(0);
+            let nfds = ret_u32(c::epoll_wait(
+                self.epoll_fd.as_fd().as_raw_fd(),
+                event_list.events.as_mut_ptr().cast::<c::epoll_event>(),
+                event_list.events.capacity().try_into().unwrap_or(i32::MAX),
+                timeout,
+            ))?;
+            event_list.events.set_len(nfds as usize);
+            event_list.context = &self.context;
+        }
+
+        Ok(())
+    }
+}
+
+#[cfg(not(feature = "rustc-dep-of-std"))]
+impl<'context, T: AsFd + IntoFd + FromFd> AsRawFd for Epoll<Owning<'context, T>> {
+    fn as_raw_fd(&self) -> RawFd {
+        self.epoll_fd.as_raw_fd()
+    }
+}
+
+#[cfg(not(feature = "rustc-dep-of-std"))]
+impl<'context, T: AsFd + IntoFd + FromFd> IntoRawFd for Epoll<Owning<'context, T>> {
+    fn into_raw_fd(self) -> RawFd {
+        self.epoll_fd.into_raw_fd()
+    }
+}
+
+#[cfg(not(feature = "rustc-dep-of-std"))]
+impl<'context, T: AsFd + IntoFd + FromFd> FromRawFd for Epoll<Owning<'context, T>> {
+    unsafe fn from_raw_fd(fd: RawFd) -> Self {
+        Self {
+            epoll_fd: OwnedFd::from_raw_fd(fd),
+            context: Owning::new(),
+        }
+    }
+}
+
+#[cfg(not(feature = "rustc-dep-of-std"))]
+impl<'context, T: AsFd + IntoFd + FromFd> AsFd for Epoll<Owning<'context, T>> {
+    fn as_fd(&self) -> BorrowedFd<'_> {
+        self.epoll_fd.as_fd()
+    }
+}
+
+#[cfg(not(feature = "rustc-dep-of-std"))]
+impl<'context, T: AsFd + IntoFd + FromFd> From<Epoll<Owning<'context, T>>> for OwnedFd {
+    fn from(epoll: Epoll<Owning<'context, T>>) -> Self {
+        epoll.epoll_fd
+    }
+}
+
+#[cfg(not(feature = "rustc-dep-of-std"))]
+impl<'context, T: AsFd + IntoFd + FromFd> From<OwnedFd> for Epoll<Owning<'context, T>> {
+    fn from(fd: OwnedFd) -> Self {
+        Self {
+            epoll_fd: fd,
+            context: Owning::new(),
+        }
+    }
+}
+
+/// An iterator over the `Event`s in an `EventVec`.
+pub struct Iter<'context, Context: self::Context> {
+    iter: core::slice::Iter<'context, Event>,
+    context: *const Context,
+    _phantom: PhantomData<&'context Context>,
+}
+
+impl<'context, Context: self::Context> Iterator for Iter<'context, Context> {
+    type Item = (EventFlags, Ref<'context, Context::Target>);
+
+    fn next(&mut self) -> Option<Self::Item> {
+        // Safety: `self.context` is guaranteed to be valid because we hold
+        // `'context` for it. And we know this event is associated with this
+        // context because `wait` sets both.
+        self.iter.next().map(|event| {
+            (event.event_flags, unsafe {
+                (*self.context).decode(event.encoded)
+            })
+        })
+    }
+}
+
+/// A record of an event that occurred.
+#[repr(C)]
+#[cfg_attr(
+    any(
+        all(
+            target_arch = "x86",
+            not(target_env = "musl"),
+            not(target_os = "android"),
+        ),
+        target_arch = "x86_64",
+    ),
+    repr(packed)
+)]
+struct Event {
+    // Match the layout of `c::epoll_event`. We just use a `u64` instead of
+    // the full union; `Context` implementations will simply need to deal with
+    // casting the value into and out of the `u64` themselves.
+    event_flags: EventFlags,
+    encoded: u64,
+}
+
+/// A vector of `Event`s, plus context for interpreting them.
+pub struct EventVec<'context, Context: self::Context> {
+    events: Vec<Event>,
+    context: *const Context,
+    _phantom: PhantomData<&'context Context>,
+}
+
+impl<'context, Context: self::Context> EventVec<'context, Context> {
+    /// Constructs an `EventVec` with memory for `capacity` `Event`s.
+    #[inline]
+    pub fn with_capacity(capacity: usize) -> Self {
+        Self {
+            events: Vec::with_capacity(capacity),
+            context: null(),
+            _phantom: PhantomData,
+        }
+    }
+
+    /// Returns the current `Event` capacity of this `EventVec`.
+    #[inline]
+    pub fn capacity(&self) -> usize {
+        self.events.capacity()
+    }
+
+    /// Reserves enough memory for at least `additional` more `Event`s.
+    #[inline]
+    pub fn reserve(&mut self, additional: usize) {
+        self.events.reserve(additional);
+    }
+
+    /// Reserves enough memory for exactly `additional` more `Event`s.
+    #[inline]
+    pub fn reserve_exact(&mut self, additional: usize) {
+        self.events.reserve_exact(additional);
+    }
+
+    /// Clears all the `Events` out of this `EventVec`.
+    #[inline]
+    pub fn clear(&mut self) {
+        self.events.clear();
+    }
+
+    /// Shrinks the capacity of this `EventVec` as much as possible.
+    #[inline]
+    pub fn shrink_to_fit(&mut self) {
+        self.events.shrink_to_fit();
+    }
+
+    /// Returns an iterator over the `Event`s in this `EventVec`.
+    #[inline]
+    pub fn iter(&self) -> Iter<'_, Context> {
+        Iter {
+            iter: self.events.iter(),
+            context: self.context,
+            _phantom: PhantomData,
+        }
+    }
+
+    /// Returns the number of `Event`s logically contained in this `EventVec`.
+    #[inline]
+    pub fn len(&mut self) -> usize {
+        self.events.len()
+    }
+
+    /// Tests whether this `EventVec` is logically empty.
+    #[inline]
+    pub fn is_empty(&mut self) -> bool {
+        self.events.is_empty()
+    }
+}
+
+impl<'context, Context: self::Context> IntoIterator for &'context EventVec<'context, Context> {
+    type IntoIter = Iter<'context, Context>;
+    type Item = (EventFlags, Ref<'context, Context::Target>);
+
+    #[inline]
+    fn into_iter(self) -> Self::IntoIter {
+        self.iter()
+    }
+}
diff --git a/vendor/rustix/src/imp/libc/io/errno.rs b/vendor/rustix/src/imp/libc/io/errno.rs
new file mode 100644
index 000000000..470cf205c
--- /dev/null
+++ b/vendor/rustix/src/imp/libc/io/errno.rs
@@ -0,0 +1,997 @@
+//! The `rustix` `Errno` type.
+//!
+//! This type holds an OS error code, which conceptually corresponds to an
+//! `errno` value.
+
+use super::super::c;
+use libc_errno::errno;
+
+/// The error type for `rustix` APIs.
+///
+/// This is similar to `std::io::Error`, but only holds an OS error code,
+/// and no extra error value.
+#[repr(transparent)]
+#[doc(alias = "errno")]
+#[derive(Eq, PartialEq, Hash, Copy, Clone)]
+pub struct Errno(pub(crate) c::c_int);
+
+impl Errno {
+    /// `EACCES`
+    #[doc(alias = "ACCES")]
+    pub const ACCESS: Self = Self(c::EACCES);
+    /// `EADDRINUSE`
+    pub const ADDRINUSE: Self = Self(c::EADDRINUSE);
+    /// `EADDRNOTAVAIL`
+    pub const ADDRNOTAVAIL: Self = Self(c::EADDRNOTAVAIL);
+    /// `EADV`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+        target_os = "wasi",
+    )))]
+    pub const ADV: Self = Self(c::EADV);
+    /// `EAFNOSUPPORT`
+    pub const AFNOSUPPORT: Self = Self(c::EAFNOSUPPORT);
+    /// `EAGAIN`
+    pub const AGAIN: Self = Self(c::EAGAIN);
+    /// `EALREADY`
+    pub const ALREADY: Self = Self(c::EALREADY);
+    /// `EAUTH`
+    #[cfg(any(
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    ))]
+    pub const AUTH: Self = Self(c::EAUTH);
+    /// `EBADE`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+        target_os = "wasi",
+    )))]
+    pub const BADE: Self = Self(c::EBADE);
+    /// `EBADF`
+    pub const BADF: Self = Self(c::EBADF);
+    /// `EBADFD`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+        target_os = "wasi",
+    )))]
+    pub const BADFD: Self = Self(c::EBADFD);
+    /// `EBADMSG`
+    #[cfg(not(windows))]
+    pub const BADMSG: Self = Self(c::EBADMSG);
+    /// `EBADR`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+        target_os = "wasi",
+    )))]
+    pub const BADR: Self = Self(c::EBADR);
+    /// `EBADRPC`
+    #[cfg(any(
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    ))]
+    pub const BADRPC: Self = Self(c::EBADRPC);
+    /// `EBADRQC`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+        target_os = "wasi",
+    )))]
+    pub const BADRQC: Self = Self(c::EBADRQC);
+    /// `EBADSLT`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+        target_os = "wasi",
+    )))]
+    pub const BADSLT: Self = Self(c::EBADSLT);
+    /// `EBFONT`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+        target_os = "wasi",
+    )))]
+    pub const BFONT: Self = Self(c::EBFONT);
+    /// `EBUSY`
+    #[cfg(not(windows))]
+    pub const BUSY: Self = Self(c::EBUSY);
+    /// `ECANCELED`
+    pub const CANCELED: Self = Self(c::ECANCELED);
+    /// `ECAPMODE`
+    #[cfg(any(target_os = "freebsd"))]
+    pub const CAPMODE: Self = Self(c::ECAPMODE);
+    /// `ECHILD`
+    #[cfg(not(windows))]
+    pub const CHILD: Self = Self(c::ECHILD);
+    /// `ECHRNG`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+        target_os = "wasi",
+    )))]
+    pub const CHRNG: Self = Self(c::ECHRNG);
+    /// `ECOMM`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+        target_os = "wasi",
+    )))]
+    pub const COMM: Self = Self(c::ECOMM);
+    /// `ECONNABORTED`
+    pub const CONNABORTED: Self = Self(c::ECONNABORTED);
+    /// `ECONNREFUSED`
+    pub const CONNREFUSED: Self = Self(c::ECONNREFUSED);
+    /// `ECONNRESET`
+    pub const CONNRESET: Self = Self(c::ECONNRESET);
+    /// `EDEADLK`
+    #[cfg(not(windows))]
+    pub const DEADLK: Self = Self(c::EDEADLK);
+    /// `EDEADLOCK`
+    #[cfg(not(any(
+        windows,
+        target_os = "android",
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+        target_os = "wasi",
+    )))]
+    pub const DEADLOCK: Self = Self(c::EDEADLOCK);
+    /// `EDESTADDRREQ`
+    pub const DESTADDRREQ: Self = Self(c::EDESTADDRREQ);
+    /// `EDISCON`
+    #[cfg(windows)]
+    pub const DISCON: Self = Self(c::EDISCON);
+    /// `EDOM`
+    #[cfg(not(windows))]
+    pub const DOM: Self = Self(c::EDOM);
+    /// `EDOOFUS`
+    #[cfg(any(target_os = "dragonfly", target_os = "freebsd"))]
+    pub const DOOFUS: Self = Self(c::EDOOFUS);
+    /// `EDOTDOT`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "illumos",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+        target_os = "wasi",
+    )))]
+    pub const DOTDOT: Self = Self(c::EDOTDOT);
+    /// `EDQUOT`
+    pub const DQUOT: Self = Self(c::EDQUOT);
+    /// `EEXIST`
+    #[cfg(not(windows))]
+    pub const EXIST: Self = Self(c::EEXIST);
+    /// `EFAULT`
+    pub const FAULT: Self = Self(c::EFAULT);
+    /// `EFBIG`
+    #[cfg(not(windows))]
+    pub const FBIG: Self = Self(c::EFBIG);
+    /// `EFTYPE`
+    #[cfg(any(
+        target_env = "newlib",
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    ))]
+    pub const FTYPE: Self = Self(c::EFTYPE);
+    /// `EHOSTDOWN`
+    #[cfg(not(target_os = "wasi"))]
+    pub const HOSTDOWN: Self = Self(c::EHOSTDOWN);
+    /// `EHOSTUNREACH`
+    pub const HOSTUNREACH: Self = Self(c::EHOSTUNREACH);
+    /// `EHWPOISON`
+    #[cfg(not(any(
+        windows,
+        target_os = "android",
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "illumos",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+        target_os = "redox",
+        target_os = "wasi",
+    )))]
+    pub const HWPOISON: Self = Self(c::EHWPOISON);
+    /// `EIDRM`
+    #[cfg(not(windows))]
+    pub const IDRM: Self = Self(c::EIDRM);
+    /// `EILSEQ`
+    #[cfg(not(windows))]
+    pub const ILSEQ: Self = Self(c::EILSEQ);
+    /// `EINPROGRESS`
+    pub const INPROGRESS: Self = Self(c::EINPROGRESS);
+    /// `EINTR`
+    ///
+    /// For a convenient way to retry system calls that exit with `INTR`, use
+    /// [`retry_on_intr`].
+    ///
+    /// [`retry_on_intr`]: crate::io::retry_on_intr
+    pub const INTR: Self = Self(c::EINTR);
+    /// `EINVAL`
+    pub const INVAL: Self = Self(c::EINVAL);
+    /// `EINVALIDPROCTABLE`
+    #[cfg(windows)]
+    pub const INVALIDPROCTABLE: Self = Self(c::EINVALIDPROCTABLE);
+    /// `EINVALIDPROVIDER`
+    #[cfg(windows)]
+    pub const INVALIDPROVIDER: Self = Self(c::EINVALIDPROVIDER);
+    /// `EIO`
+    #[cfg(not(windows))]
+    pub const IO: Self = Self(c::EIO);
+    /// `EISCONN`
+    pub const ISCONN: Self = Self(c::EISCONN);
+    /// `EISDIR`
+    #[cfg(not(windows))]
+    pub const ISDIR: Self = Self(c::EISDIR);
+    /// `EISNAM`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "illumos",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+        target_os = "wasi",
+    )))]
+    pub const ISNAM: Self = Self(c::EISNAM);
+    /// `EKEYEXPIRED`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "illumos",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+        target_os = "wasi",
+    )))]
+    pub const KEYEXPIRED: Self = Self(c::EKEYEXPIRED);
+    /// `EKEYREJECTED`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "illumos",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+        target_os = "wasi",
+    )))]
+    pub const KEYREJECTED: Self = Self(c::EKEYREJECTED);
+    /// `EKEYREVOKED`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "illumos",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+        target_os = "wasi",
+    )))]
+    pub const KEYREVOKED: Self = Self(c::EKEYREVOKED);
+    /// `EL2HLT`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+        target_os = "wasi",
+    )))]
+    pub const L2HLT: Self = Self(c::EL2HLT);
+    /// `EL2NSYNC`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+        target_os = "wasi",
+    )))]
+    pub const L2NSYNC: Self = Self(c::EL2NSYNC);
+    /// `EL3HLT`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+        target_os = "wasi",
+    )))]
+    pub const L3HLT: Self = Self(c::EL3HLT);
+    /// `EL3RST`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+        target_os = "wasi",
+    )))]
+    pub const L3RST: Self = Self(c::EL3RST);
+    /// `ELIBACC`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+        target_os = "wasi",
+    )))]
+    pub const LIBACC: Self = Self(c::ELIBACC);
+    /// `ELIBBAD`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+        target_os = "wasi",
+    )))]
+    pub const LIBBAD: Self = Self(c::ELIBBAD);
+    /// `ELIBEXEC`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+        target_os = "wasi",
+    )))]
+    pub const LIBEXEC: Self = Self(c::ELIBEXEC);
+    /// `ELIBMAX`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+        target_os = "wasi",
+    )))]
+    pub const LIBMAX: Self = Self(c::ELIBMAX);
+    /// `ELIBSCN`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+        target_os = "wasi",
+    )))]
+    pub const LIBSCN: Self = Self(c::ELIBSCN);
+    /// `ELNRNG`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+        target_os = "wasi",
+    )))]
+    pub const LNRNG: Self = Self(c::ELNRNG);
+    /// `ELOOP`
+    pub const LOOP: Self = Self(c::ELOOP);
+    /// `EMEDIUMTYPE`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "illumos",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+        target_os = "wasi",
+    )))]
+    pub const MEDIUMTYPE: Self = Self(c::EMEDIUMTYPE);
+    /// `EMFILE`
+    pub const MFILE: Self = Self(c::EMFILE);
+    /// `EMLINK`
+    #[cfg(not(windows))]
+    pub const MLINK: Self = Self(c::EMLINK);
+    /// `EMSGSIZE`
+    pub const MSGSIZE: Self = Self(c::EMSGSIZE);
+    /// `EMULTIHOP`
+    #[cfg(not(any(windows, target_os = "openbsd")))]
+    pub const MULTIHOP: Self = Self(c::EMULTIHOP);
+    /// `ENAMETOOLONG`
+    pub const NAMETOOLONG: Self = Self(c::ENAMETOOLONG);
+    /// `ENAVAIL`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "illumos",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+        target_os = "wasi",
+    )))]
+    pub const NAVAIL: Self = Self(c::ENAVAIL);
+    /// `ENEEDAUTH`
+    #[cfg(any(
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    ))]
+    pub const NEEDAUTH: Self = Self(c::ENEEDAUTH);
+    /// `ENETDOWN`
+    pub const NETDOWN: Self = Self(c::ENETDOWN);
+    /// `ENETRESET`
+    pub const NETRESET: Self = Self(c::ENETRESET);
+    /// `ENETUNREACH`
+    pub const NETUNREACH: Self = Self(c::ENETUNREACH);
+    /// `ENFILE`
+    #[cfg(not(windows))]
+    pub const NFILE: Self = Self(c::ENFILE);
+    /// `ENOANO`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+        target_os = "wasi",
+    )))]
+    pub const NOANO: Self = Self(c::ENOANO);
+    /// `ENOATTR`
+    #[cfg(any(
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    ))]
+    pub const NOATTR: Self = Self(c::ENOATTR);
+    /// `ENOBUFS`
+    pub const NOBUFS: Self = Self(c::ENOBUFS);
+    /// `ENOCSI`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+        target_os = "wasi",
+    )))]
+    pub const NOCSI: Self = Self(c::ENOCSI);
+    /// `ENODATA`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "openbsd",
+        target_os = "wasi",
+    )))]
+    pub const NODATA: Self = Self(c::ENODATA);
+    /// `ENODEV`
+    #[cfg(not(windows))]
+    pub const NODEV: Self = Self(c::ENODEV);
+    /// `ENOENT`
+    #[cfg(not(windows))]
+    pub const NOENT: Self = Self(c::ENOENT);
+    /// `ENOEXEC`
+    #[cfg(not(windows))]
+    pub const NOEXEC: Self = Self(c::ENOEXEC);
+    /// `ENOKEY`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "illumos",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+        target_os = "wasi",
+    )))]
+    pub const NOKEY: Self = Self(c::ENOKEY);
+    /// `ENOLCK`
+    #[cfg(not(windows))]
+    pub const NOLCK: Self = Self(c::ENOLCK);
+    /// `ENOLINK`
+    #[cfg(not(any(windows, target_os = "openbsd")))]
+    pub const NOLINK: Self = Self(c::ENOLINK);
+    /// `ENOMEDIUM`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "illumos",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+        target_os = "wasi",
+    )))]
+    pub const NOMEDIUM: Self = Self(c::ENOMEDIUM);
+    /// `ENOMEM`
+    #[cfg(not(windows))]
+    pub const NOMEM: Self = Self(c::ENOMEM);
+    /// `ENOMORE`
+    #[cfg(windows)]
+    pub const NOMORE: Self = Self(c::ENOMORE);
+    /// `ENOMSG`
+    #[cfg(not(windows))]
+    pub const NOMSG: Self = Self(c::ENOMSG);
+    /// `ENONET`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+        target_os = "wasi",
+    )))]
+    pub const NONET: Self = Self(c::ENONET);
+    /// `ENOPKG`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+        target_os = "wasi",
+    )))]
+    pub const NOPKG: Self = Self(c::ENOPKG);
+    /// `ENOPROTOOPT`
+    pub const NOPROTOOPT: Self = Self(c::ENOPROTOOPT);
+    /// `ENOSPC`
+    #[cfg(not(windows))]
+    pub const NOSPC: Self = Self(c::ENOSPC);
+    /// `ENOSR`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "openbsd",
+        target_os = "wasi",
+    )))]
+    pub const NOSR: Self = Self(c::ENOSR);
+    /// `ENOSTR`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "openbsd",
+        target_os = "wasi",
+    )))]
+    pub const NOSTR: Self = Self(c::ENOSTR);
+    /// `ENOSYS`
+    #[cfg(not(windows))]
+    pub const NOSYS: Self = Self(c::ENOSYS);
+    /// `ENOTBLK`
+    #[cfg(not(any(windows, target_os = "wasi")))]
+    pub const NOTBLK: Self = Self(c::ENOTBLK);
+    /// `ENOTCAPABLE`
+    #[cfg(any(target_os = "freebsd", target_os = "wasi"))]
+    pub const NOTCAPABLE: Self = Self(c::ENOTCAPABLE);
+    /// `ENOTCONN`
+    pub const NOTCONN: Self = Self(c::ENOTCONN);
+    /// `ENOTDIR`
+    #[cfg(not(windows))]
+    pub const NOTDIR: Self = Self(c::ENOTDIR);
+    /// `ENOTEMPTY`
+    pub const NOTEMPTY: Self = Self(c::ENOTEMPTY);
+    /// `ENOTNAM`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "illumos",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+        target_os = "wasi",
+    )))]
+    pub const NOTNAM: Self = Self(c::ENOTNAM);
+    /// `ENOTRECOVERABLE`
+    #[cfg(not(any(windows, target_os = "dragonfly", target_os = "netbsd")))]
+    pub const NOTRECOVERABLE: Self = Self(c::ENOTRECOVERABLE);
+    /// `ENOTSOCK`
+    pub const NOTSOCK: Self = Self(c::ENOTSOCK);
+    /// `ENOTSUP`
+    #[cfg(not(any(windows, target_os = "redox")))]
+    pub const NOTSUP: Self = Self(c::ENOTSUP);
+    /// `ENOTTY`
+    #[cfg(not(windows))]
+    pub const NOTTY: Self = Self(c::ENOTTY);
+    /// `ENOTUNIQ`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+        target_os = "wasi",
+    )))]
+    pub const NOTUNIQ: Self = Self(c::ENOTUNIQ);
+    /// `ENXIO`
+    #[cfg(not(windows))]
+    pub const NXIO: Self = Self(c::ENXIO);
+    /// `EOPNOTSUPP`
+    pub const OPNOTSUPP: Self = Self(c::EOPNOTSUPP);
+    /// `EOVERFLOW`
+    #[cfg(not(windows))]
+    pub const OVERFLOW: Self = Self(c::EOVERFLOW);
+    /// `EOWNERDEAD`
+    #[cfg(not(any(windows, target_os = "dragonfly", target_os = "netbsd")))]
+    pub const OWNERDEAD: Self = Self(c::EOWNERDEAD);
+    /// `EPERM`
+    #[cfg(not(windows))]
+    pub const PERM: Self = Self(c::EPERM);
+    /// `EPFNOSUPPORT`
+    #[cfg(not(target_os = "wasi"))]
+    pub const PFNOSUPPORT: Self = Self(c::EPFNOSUPPORT);
+    /// `EPIPE`
+    #[cfg(not(windows))]
+    pub const PIPE: Self = Self(c::EPIPE);
+    /// `EPROCLIM`
+    #[cfg(any(
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    ))]
+    pub const PROCLIM: Self = Self(c::EPROCLIM);
+    /// `EPROCUNAVAIL`
+    #[cfg(any(
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    ))]
+    pub const PROCUNAVAIL: Self = Self(c::EPROCUNAVAIL);
+    /// `EPROGMISMATCH`
+    #[cfg(any(
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    ))]
+    pub const PROGMISMATCH: Self = Self(c::EPROGMISMATCH);
+    /// `EPROGUNAVAIL`
+    #[cfg(any(
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    ))]
+    pub const PROGUNAVAIL: Self = Self(c::EPROGUNAVAIL);
+    /// `EPROTO`
+    #[cfg(not(windows))]
+    pub const PROTO: Self = Self(c::EPROTO);
+    /// `EPROTONOSUPPORT`
+    pub const PROTONOSUPPORT: Self = Self(c::EPROTONOSUPPORT);
+    /// `EPROTOTYPE`
+    pub const PROTOTYPE: Self = Self(c::EPROTOTYPE);
+    /// `EPROVIDERFAILEDINIT`
+    #[cfg(windows)]
+    pub const PROVIDERFAILEDINIT: Self = Self(c::EPROVIDERFAILEDINIT);
+    /// `ERANGE`
+    #[cfg(not(windows))]
+    pub const RANGE: Self = Self(c::ERANGE);
+    /// `EREFUSED`
+    #[cfg(windows)]
+    pub const REFUSED: Self = Self(c::EREFUSED);
+    /// `EREMCHG`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+        target_os = "wasi",
+    )))]
+    pub const REMCHG: Self = Self(c::EREMCHG);
+    /// `EREMOTE`
+    #[cfg(not(target_os = "wasi"))]
+    pub const REMOTE: Self = Self(c::EREMOTE);
+    /// `EREMOTEIO`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "illumos",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+        target_os = "wasi",
+    )))]
+    pub const REMOTEIO: Self = Self(c::EREMOTEIO);
+    /// `ERESTART`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+        target_os = "wasi",
+    )))]
+    pub const RESTART: Self = Self(c::ERESTART);
+    /// `ERFKILL`
+    #[cfg(not(any(
+        windows,
+        target_os = "android",
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "illumos",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+        target_os = "redox",
+        target_os = "wasi",
+    )))]
+    pub const RFKILL: Self = Self(c::ERFKILL);
+    /// `EROFS`
+    #[cfg(not(windows))]
+    pub const ROFS: Self = Self(c::EROFS);
+    /// `ERPCMISMATCH`
+    #[cfg(any(
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    ))]
+    pub const RPCMISMATCH: Self = Self(c::ERPCMISMATCH);
+    /// `ESHUTDOWN`
+    #[cfg(not(target_os = "wasi"))]
+    pub const SHUTDOWN: Self = Self(c::ESHUTDOWN);
+    /// `ESOCKTNOSUPPORT`
+    #[cfg(not(target_os = "wasi"))]
+    pub const SOCKTNOSUPPORT: Self = Self(c::ESOCKTNOSUPPORT);
+    /// `ESPIPE`
+    #[cfg(not(windows))]
+    pub const SPIPE: Self = Self(c::ESPIPE);
+    /// `ESRCH`
+    #[cfg(not(windows))]
+    pub const SRCH: Self = Self(c::ESRCH);
+    /// `ESRMNT`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+        target_os = "wasi",
+    )))]
+    pub const SRMNT: Self = Self(c::ESRMNT);
+    /// `ESTALE`
+    pub const STALE: Self = Self(c::ESTALE);
+    /// `ESTRPIPE`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+        target_os = "wasi",
+    )))]
+    pub const STRPIPE: Self = Self(c::ESTRPIPE);
+    /// `ETIME`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "openbsd",
+        target_os = "wasi",
+    )))]
+    pub const TIME: Self = Self(c::ETIME);
+    /// `ETIMEDOUT`
+    pub const TIMEDOUT: Self = Self(c::ETIMEDOUT);
+    /// `E2BIG`
+    #[cfg(not(windows))]
+    #[doc(alias = "2BIG")]
+    pub const TOOBIG: Self = Self(c::E2BIG);
+    /// `ETOOMANYREFS`
+    #[cfg(not(target_os = "wasi"))]
+    pub const TOOMANYREFS: Self = Self(c::ETOOMANYREFS);
+    /// `ETXTBSY`
+    #[cfg(not(windows))]
+    pub const TXTBSY: Self = Self(c::ETXTBSY);
+    /// `EUCLEAN`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "illumos",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+        target_os = "wasi",
+    )))]
+    pub const UCLEAN: Self = Self(c::EUCLEAN);
+    /// `EUNATCH`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+        target_os = "wasi",
+    )))]
+    pub const UNATCH: Self = Self(c::EUNATCH);
+    /// `EUSERS`
+    #[cfg(not(target_os = "wasi"))]
+    pub const USERS: Self = Self(c::EUSERS);
+    /// `EWOULDBLOCK`
+    pub const WOULDBLOCK: Self = Self(c::EWOULDBLOCK);
+    /// `EXDEV`
+    #[cfg(not(windows))]
+    pub const XDEV: Self = Self(c::EXDEV);
+    /// `EXFULL`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+        target_os = "wasi",
+    )))]
+    pub const XFULL: Self = Self(c::EXFULL);
+}
+
+impl Errno {
+    /// Extract an `Errno` value from a `std::io::Error`.
+    ///
+    /// This isn't a `From` conversion because it's expected to be relatively
+    /// uncommon.
+    #[cfg(feature = "std")]
+    #[inline]
+    pub fn from_io_error(io_err: &std::io::Error) -> Option<Self> {
+        io_err
+            .raw_os_error()
+            .and_then(|raw| if raw != 0 { Some(Self(raw)) } else { None })
+    }
+
+    /// Extract the raw OS error number from this error.
+    #[inline]
+    pub const fn raw_os_error(self) -> i32 {
+        self.0
+    }
+
+    /// Construct an `Errno` from a raw OS error number.
+    #[inline]
+    pub const fn from_raw_os_error(raw: i32) -> Self {
+        Self(raw)
+    }
+
+    pub(crate) fn last_os_error() -> Self {
+        Self(errno().0)
+    }
+}
diff --git a/vendor/rustix/src/imp/libc/io/io_slice.rs b/vendor/rustix/src/imp/libc/io/io_slice.rs
new file mode 100644
index 000000000..81c504d25
--- /dev/null
+++ b/vendor/rustix/src/imp/libc/io/io_slice.rs
@@ -0,0 +1,85 @@
+//! The following is derived from Rust's
+//! library/std/src/sys/unix/io.rs
+//! dca3f1b786efd27be3b325ed1e01e247aa589c3b.
+
+use super::super::c;
+use core::marker::PhantomData;
+use core::slice;
+
+#[derive(Copy, Clone)]
+#[repr(transparent)]
+pub struct IoSlice<'a> {
+    vec: c::iovec,
+    _p: PhantomData<&'a [u8]>,
+}
+
+impl<'a> IoSlice<'a> {
+    #[inline]
+    pub fn new(buf: &'a [u8]) -> IoSlice<'a> {
+        IoSlice {
+            vec: c::iovec {
+                iov_base: buf.as_ptr() as *mut u8 as *mut c::c_void,
+                iov_len: buf.len(),
+            },
+            _p: PhantomData,
+        }
+    }
+
+    #[inline]
+    pub fn advance(&mut self, n: usize) {
+        if self.vec.iov_len < n {
+            panic!("advancing IoSlice beyond its length");
+        }
+
+        unsafe {
+            self.vec.iov_len -= n;
+            self.vec.iov_base = self.vec.iov_base.add(n);
+        }
+    }
+
+    #[inline]
+    pub fn as_slice(&self) -> &[u8] {
+        unsafe { slice::from_raw_parts(self.vec.iov_base as *mut u8, self.vec.iov_len) }
+    }
+}
+
+#[repr(transparent)]
+pub struct IoSliceMut<'a> {
+    vec: c::iovec,
+    _p: PhantomData<&'a mut [u8]>,
+}
+
+impl<'a> IoSliceMut<'a> {
+    #[inline]
+    pub fn new(buf: &'a mut [u8]) -> IoSliceMut<'a> {
+        IoSliceMut {
+            vec: c::iovec {
+                iov_base: buf.as_mut_ptr() as *mut c::c_void,
+                iov_len: buf.len(),
+            },
+            _p: PhantomData,
+        }
+    }
+
+    #[inline]
+    pub fn advance(&mut self, n: usize) {
+        if self.vec.iov_len < n {
+            panic!("advancing IoSliceMut beyond its length");
+        }
+
+        unsafe {
+            self.vec.iov_len -= n;
+            self.vec.iov_base = self.vec.iov_base.add(n);
+        }
+    }
+
+    #[inline]
+    pub fn as_slice(&self) -> &[u8] {
+        unsafe { slice::from_raw_parts(self.vec.iov_base as *mut u8, self.vec.iov_len) }
+    }
+
+    #[inline]
+    pub fn as_mut_slice(&mut self) -> &mut [u8] {
+        unsafe { slice::from_raw_parts_mut(self.vec.iov_base as *mut u8, self.vec.iov_len) }
+    }
+}
diff --git a/vendor/rustix/src/imp/libc/io/mod.rs b/vendor/rustix/src/imp/libc/io/mod.rs
new file mode 100644
index 000000000..1378adf3d
--- /dev/null
+++ b/vendor/rustix/src/imp/libc/io/mod.rs
@@ -0,0 +1,13 @@
+pub(crate) mod errno;
+#[cfg(not(windows))]
+#[cfg(not(feature = "std"))]
+pub(crate) mod io_slice;
+pub(crate) mod poll_fd;
+#[cfg(not(windows))]
+pub(crate) mod types;
+
+#[cfg_attr(windows, path = "windows_syscalls.rs")]
+pub(crate) mod syscalls;
+
+#[cfg(any(target_os = "android", target_os = "linux"))]
+pub mod epoll;
diff --git a/vendor/rustix/src/imp/libc/io/poll_fd.rs b/vendor/rustix/src/imp/libc/io/poll_fd.rs
new file mode 100644
index 000000000..c516a9309
--- /dev/null
+++ b/vendor/rustix/src/imp/libc/io/poll_fd.rs
@@ -0,0 +1,136 @@
+use super::super::c;
+use super::super::conv::borrowed_fd;
+#[cfg(windows)]
+use super::super::fd::RawFd;
+use super::super::fd::{AsFd, AsRawFd, BorrowedFd, LibcFd};
+use bitflags::bitflags;
+use core::marker::PhantomData;
+#[cfg(windows)]
+use std::fmt;
+
+bitflags! {
+    /// `POLL*` flags for use with [`poll`].
+    ///
+    /// [`poll`]: crate::io::poll
+    pub struct PollFlags: c::c_short {
+        /// `POLLIN`
+        const IN = c::POLLIN;
+        /// `POLLPRI`
+        #[cfg(not(target_os = "wasi"))]
+        const PRI = c::POLLPRI;
+        /// `POLLOUT`
+        const OUT = c::POLLOUT;
+        /// `POLLRDNORM`
+        #[cfg(not(target_os = "redox"))]
+        const RDNORM = c::POLLRDNORM;
+        /// `POLLWRNORM`
+        #[cfg(not(target_os = "redox"))]
+        const WRNORM = c::POLLWRNORM;
+        /// `POLLRDBAND`
+        #[cfg(not(any(target_os = "redox", target_os = "wasi")))]
+        const RDBAND = c::POLLRDBAND;
+        /// `POLLWRBAND`
+        #[cfg(not(any(target_os = "redox", target_os = "wasi")))]
+        const WRBAND = c::POLLWRBAND;
+        /// `POLLERR`
+        const ERR = c::POLLERR;
+        /// `POLLHUP`
+        const HUP = c::POLLHUP;
+        /// `POLLNVAL`
+        const NVAL = c::POLLNVAL;
+        /// `POLLRDHUP`
+        #[cfg(all(
+            any(target_os = "android", target_os = "linux"),
+            not(any(target_arch = "sparc", target_arch = "sparc64"))),
+        )]
+        const RDHUP = c::POLLRDHUP;
+    }
+}
+
+/// `struct pollfd`—File descriptor and flags for use with [`poll`].
+///
+/// [`poll`]: crate::io::poll
+#[doc(alias = "pollfd")]
+#[derive(Clone)]
+#[cfg_attr(not(windows), derive(Debug))]
+#[repr(transparent)]
+pub struct PollFd<'fd> {
+    pollfd: c::pollfd,
+    _phantom: PhantomData<BorrowedFd<'fd>>,
+}
+
+#[cfg(windows)]
+impl<'fd> fmt::Debug for PollFd<'fd> {
+    fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result {
+        fmt.debug_struct("pollfd")
+            .field("fd", &self.pollfd.fd)
+            .field("events", &self.pollfd.events)
+            .field("revents", &self.pollfd.revents)
+            .finish()
+    }
+}
+
+impl<'fd> PollFd<'fd> {
+    /// Constructs a new `PollFd` holding `fd` and `events`.
+    #[inline]
+    pub fn new<Fd: AsFd>(fd: &'fd Fd, events: PollFlags) -> Self {
+        Self::from_borrowed_fd(fd.as_fd(), events)
+    }
+
+    /// Sets the contained file descriptor to `fd`.
+    #[inline]
+    pub fn set_fd<Fd: AsFd>(&mut self, fd: &'fd Fd) {
+        self.pollfd.fd = fd.as_fd().as_raw_fd() as LibcFd;
+    }
+
+    /// Clears the ready events.
+    #[inline]
+    pub fn clear_revents(&mut self) {
+        self.pollfd.revents = 0;
+    }
+
+    /// Constructs a new `PollFd` holding `fd` and `events`.
+    ///
+    /// This is the same as `new`, but can be used to avoid borrowing the
+    /// `BorrowedFd`, which can be tricky in situations where the `BorrowedFd`
+    /// is a temporary.
+    #[inline]
+    pub fn from_borrowed_fd(fd: BorrowedFd<'fd>, events: PollFlags) -> Self {
+        Self {
+            pollfd: c::pollfd {
+                fd: borrowed_fd(fd),
+                events: events.bits(),
+                revents: 0,
+            },
+            _phantom: PhantomData,
+        }
+    }
+
+    /// Returns the ready events.
+    #[inline]
+    pub fn revents(&self) -> PollFlags {
+        // Use `unwrap()` here because in theory we know we know all the bits
+        // the OS might set here, but OS's have added extensions in the past.
+        PollFlags::from_bits(self.pollfd.revents).unwrap()
+    }
+}
+
+#[cfg(not(windows))]
+impl<'fd> AsFd for PollFd<'fd> {
+    #[inline]
+    fn as_fd(&self) -> BorrowedFd<'_> {
+        // Safety: Our constructors and `set_fd` require `pollfd.fd` to be
+        // valid for the `fd lifetime.
+        unsafe { BorrowedFd::borrow_raw(self.pollfd.fd) }
+    }
+}
+
+#[cfg(windows)]
+impl<'fd> io_lifetimes::AsSocket for PollFd<'fd> {
+    #[inline]
+    fn as_socket(&self) -> BorrowedFd<'_> {
+        // Safety: Our constructors and `set_fd` require `pollfd.fd` to be
+        // valid for the `fd lifetime.
+        unsafe { BorrowedFd::borrow_raw(self.pollfd.fd as RawFd) }
+    }
+}
diff --git a/vendor/rustix/src/imp/libc/io/syscalls.rs b/vendor/rustix/src/imp/libc/io/syscalls.rs
new file mode 100644
index 000000000..4fafbfd66
--- /dev/null
+++ b/vendor/rustix/src/imp/libc/io/syscalls.rs
@@ -0,0 +1,456 @@
+//! libc syscalls supporting `rustix::io`.
+
+use super::super::c;
+#[cfg(any(target_os = "android", target_os = "linux"))]
+use super::super::conv::syscall_ret_owned_fd;
+use super::super::conv::{
+    borrowed_fd, ret, ret_c_int, ret_discarded_fd, ret_owned_fd, ret_ssize_t,
+};
+use super::super::offset::{libc_pread, libc_pwrite};
+#[cfg(not(target_os = "redox"))]
+use super::super::offset::{libc_preadv, libc_pwritev};
+#[cfg(all(target_os = "linux", target_env = "gnu"))]
+use super::super::offset::{libc_preadv2, libc_pwritev2};
+use crate::fd::{AsFd, BorrowedFd, RawFd};
+#[cfg(not(target_os = "wasi"))]
+use crate::io::DupFlags;
+#[cfg(not(any(target_os = "ios", target_os = "macos", target_os = "wasi")))]
+use crate::io::PipeFlags;
+use crate::io::{self, IoSlice, IoSliceMut, OwnedFd, PollFd};
+#[cfg(any(target_os = "android", target_os = "linux"))]
+use crate::io::{EventfdFlags, ReadWriteFlags};
+use core::cmp::min;
+use core::convert::TryInto;
+use core::mem::MaybeUninit;
+#[cfg(feature = "net")]
+use libc_errno::errno;
+
+pub(crate) fn read(fd: BorrowedFd<'_>, buf: &mut [u8]) -> io::Result<usize> {
+    let nread = unsafe {
+        ret_ssize_t(c::read(
+            borrowed_fd(fd),
+            buf.as_mut_ptr().cast(),
+            min(buf.len(), READ_LIMIT),
+        ))?
+    };
+    Ok(nread as usize)
+}
+
+pub(crate) fn write(fd: BorrowedFd<'_>, buf: &[u8]) -> io::Result<usize> {
+    let nwritten = unsafe {
+        ret_ssize_t(c::write(
+            borrowed_fd(fd),
+            buf.as_ptr().cast(),
+            min(buf.len(), READ_LIMIT),
+        ))?
+    };
+    Ok(nwritten as usize)
+}
+
+pub(crate) fn pread(fd: BorrowedFd<'_>, buf: &mut [u8], offset: u64) -> io::Result<usize> {
+    let len = min(buf.len(), READ_LIMIT);
+
+    // Silently cast; we'll get `EINVAL` if the value is negative.
+    let offset = offset as i64;
+
+    let nread = unsafe {
+        ret_ssize_t(libc_pread(
+            borrowed_fd(fd),
+            buf.as_mut_ptr().cast(),
+            len,
+            offset,
+        ))?
+    };
+    Ok(nread as usize)
+}
+
+pub(crate) fn pwrite(fd: BorrowedFd<'_>, buf: &[u8], offset: u64) -> io::Result<usize> {
+    let len = min(buf.len(), READ_LIMIT);
+
+    // Silently cast; we'll get `EINVAL` if the value is negative.
+    let offset = offset as i64;
+
+    let nwritten = unsafe {
+        ret_ssize_t(libc_pwrite(
+            borrowed_fd(fd),
+            buf.as_ptr().cast(),
+            len,
+            offset,
+        ))?
+    };
+    Ok(nwritten as usize)
+}
+
+pub(crate) fn readv(fd: BorrowedFd<'_>, bufs: &mut [IoSliceMut]) -> io::Result<usize> {
+    let nread = unsafe {
+        ret_ssize_t(c::readv(
+            borrowed_fd(fd),
+            bufs.as_ptr().cast::<c::iovec>(),
+            min(bufs.len(), max_iov()) as c::c_int,
+        ))?
+    };
+    Ok(nread as usize)
+}
+
+pub(crate) fn writev(fd: BorrowedFd<'_>, bufs: &[IoSlice]) -> io::Result<usize> {
+    let nwritten = unsafe {
+        ret_ssize_t(c::writev(
+            borrowed_fd(fd),
+            bufs.as_ptr().cast::<c::iovec>(),
+            min(bufs.len(), max_iov()) as c::c_int,
+        ))?
+    };
+    Ok(nwritten as usize)
+}
+
+#[cfg(not(target_os = "redox"))]
+pub(crate) fn preadv(
+    fd: BorrowedFd<'_>,
+    bufs: &mut [IoSliceMut],
+    offset: u64,
+) -> io::Result<usize> {
+    // Silently cast; we'll get `EINVAL` if the value is negative.
+    let offset = offset as i64;
+    let nread = unsafe {
+        ret_ssize_t(libc_preadv(
+            borrowed_fd(fd),
+            bufs.as_ptr().cast::<c::iovec>(),
+            min(bufs.len(), max_iov()) as c::c_int,
+            offset,
+        ))?
+    };
+    Ok(nread as usize)
+}
+
+#[cfg(not(target_os = "redox"))]
+pub(crate) fn pwritev(fd: BorrowedFd<'_>, bufs: &[IoSlice], offset: u64) -> io::Result<usize> {
+    // Silently cast; we'll get `EINVAL` if the value is negative.
+    let offset = offset as i64;
+    let nwritten = unsafe {
+        ret_ssize_t(libc_pwritev(
+            borrowed_fd(fd),
+            bufs.as_ptr().cast::<c::iovec>(),
+            min(bufs.len(), max_iov()) as c::c_int,
+            offset,
+        ))?
+    };
+    Ok(nwritten as usize)
+}
+
+#[cfg(all(target_os = "linux", target_env = "gnu"))]
+pub(crate) fn preadv2(
+    fd: BorrowedFd<'_>,
+    bufs: &mut [IoSliceMut],
+    offset: u64,
+    flags: ReadWriteFlags,
+) -> io::Result<usize> {
+    // Silently cast; we'll get `EINVAL` if the value is negative.
+    let offset = offset as i64;
+    let nread = unsafe {
+        ret_ssize_t(libc_preadv2(
+            borrowed_fd(fd),
+            bufs.as_ptr().cast::<c::iovec>(),
+            min(bufs.len(), max_iov()) as c::c_int,
+            offset,
+            flags.bits(),
+        ))?
+    };
+    Ok(nread as usize)
+}
+
+/// At present, `libc` only has `preadv2` defined for glibc. On other
+/// ABIs, `ReadWriteFlags` has no flags defined, and we use plain `preadv`.
+#[cfg(any(
+    target_os = "android",
+    all(target_os = "linux", not(target_env = "gnu")),
+))]
+#[inline]
+pub(crate) fn preadv2(
+    fd: BorrowedFd<'_>,
+    bufs: &mut [IoSliceMut],
+    offset: u64,
+    flags: ReadWriteFlags,
+) -> io::Result<usize> {
+    assert!(flags.is_empty());
+    preadv(fd, bufs, offset)
+}
+
+#[cfg(all(target_os = "linux", target_env = "gnu"))]
+pub(crate) fn pwritev2(
+    fd: BorrowedFd<'_>,
+    bufs: &[IoSlice],
+    offset: u64,
+    flags: ReadWriteFlags,
+) -> io::Result<usize> {
+    // Silently cast; we'll get `EINVAL` if the value is negative.
+    let offset = offset as i64;
+    let nwritten = unsafe {
+        ret_ssize_t(libc_pwritev2(
+            borrowed_fd(fd),
+            bufs.as_ptr().cast::<c::iovec>(),
+            min(bufs.len(), max_iov()) as c::c_int,
+            offset,
+            flags.bits(),
+        ))?
+    };
+    Ok(nwritten as usize)
+}
+
+/// At present, `libc` only has `pwritev2` defined for glibc. On other
+/// ABIs, `ReadWriteFlags` has no flags defined, and we use plain `pwritev`.
+#[cfg(any(
+    target_os = "android",
+    all(target_os = "linux", not(target_env = "gnu")),
+))]
+#[inline]
+pub(crate) fn pwritev2(
+    fd: BorrowedFd<'_>,
+    bufs: &[IoSlice],
+    offset: u64,
+    flags: ReadWriteFlags,
+) -> io::Result<usize> {
+    assert!(flags.is_empty());
+    pwritev(fd, bufs, offset)
+}
+
+// These functions are derived from Rust's library/std/src/sys/unix/fd.rs at
+// revision a77da2d454e6caa227a85b16410b95f93495e7e0.
+
+// The maximum read limit on most POSIX-like systems is `SSIZE_MAX`, with the
+// man page quoting that if the count of bytes to read is greater than
+// `SSIZE_MAX` the result is "unspecified".
+//
+// On macOS, however, apparently the 64-bit libc is either buggy or
+// intentionally showing odd behavior by rejecting any read with a size larger
+// than or equal to `INT_MAX`. To handle both of these the read size is capped
+// on both platforms.
+#[cfg(target_os = "macos")]
+const READ_LIMIT: usize = c::c_int::MAX as usize - 1;
+#[cfg(not(target_os = "macos"))]
+const READ_LIMIT: usize = c::ssize_t::MAX as usize;
+
+#[cfg(any(
+    target_os = "dragonfly",
+    target_os = "freebsd",
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "netbsd",
+    target_os = "openbsd",
+))]
+const fn max_iov() -> usize {
+    c::IOV_MAX as usize
+}
+
+#[cfg(any(target_os = "android", target_os = "emscripten", target_os = "linux"))]
+const fn max_iov() -> usize {
+    c::UIO_MAXIOV as usize
+}
+
+#[cfg(not(any(
+    target_os = "android",
+    target_os = "dragonfly",
+    target_os = "emscripten",
+    target_os = "freebsd",
+    target_os = "ios",
+    target_os = "linux",
+    target_os = "macos",
+    target_os = "netbsd",
+    target_os = "openbsd",
+)))]
+const fn max_iov() -> usize {
+    16 // The minimum value required by POSIX.
+}
+
+pub(crate) unsafe fn close(raw_fd: RawFd) {
+    let _ = c::close(raw_fd as c::c_int);
+}
+
+#[cfg(any(target_os = "android", target_os = "linux"))]
+pub(crate) fn eventfd(initval: u32, flags: EventfdFlags) -> io::Result<OwnedFd> {
+    unsafe { syscall_ret_owned_fd(c::syscall(c::SYS_eventfd2, initval, flags.bits())) }
+}
+
+#[cfg(any(target_os = "android", target_os = "linux"))]
+#[inline]
+pub(crate) fn ioctl_blksszget(fd: BorrowedFd) -> io::Result<u32> {
+    let mut result = MaybeUninit::<c::c_uint>::uninit();
+    unsafe {
+        ret(c::ioctl(borrowed_fd(fd), c::BLKSSZGET, result.as_mut_ptr()))?;
+        Ok(result.assume_init() as u32)
+    }
+}
+
+#[cfg(any(target_os = "android", target_os = "linux"))]
+#[inline]
+pub(crate) fn ioctl_blkpbszget(fd: BorrowedFd) -> io::Result<u32> {
+    let mut result = MaybeUninit::<c::c_uint>::uninit();
+    unsafe {
+        ret(c::ioctl(
+            borrowed_fd(fd),
+            c::BLKPBSZGET,
+            result.as_mut_ptr(),
+        ))?;
+        Ok(result.assume_init() as u32)
+    }
+}
+
+#[cfg(not(target_os = "redox"))]
+pub(crate) fn ioctl_fionread(fd: BorrowedFd<'_>) -> io::Result<u64> {
+    let mut nread = MaybeUninit::<c::c_int>::uninit();
+    unsafe {
+        ret(c::ioctl(borrowed_fd(fd), c::FIONREAD, nread.as_mut_ptr()))?;
+        // `FIONREAD` returns the number of bytes silently casted to a `c_int`,
+        // even when this is lossy. The best we can do is convert it back to a
+        // `u64` without sign-extending it back first.
+        Ok(u64::from(nread.assume_init() as c::c_uint))
+    }
+}
+
+pub(crate) fn ioctl_fionbio(fd: BorrowedFd<'_>, value: bool) -> io::Result<()> {
+    unsafe {
+        let data = value as c::c_int;
+        ret(c::ioctl(borrowed_fd(fd), c::FIONBIO, &data))
+    }
+}
+
+#[cfg(not(any(target_os = "redox", target_os = "wasi")))]
+#[cfg(feature = "net")]
+pub(crate) fn is_read_write(fd: BorrowedFd<'_>) -> io::Result<(bool, bool)> {
+    let (mut read, mut write) = crate::fs::fd::_is_file_read_write(fd)?;
+    let mut not_socket = false;
+    if read {
+        // Do a `recv` with `PEEK` and `DONTWAIT` for 1 byte. A 0 indicates
+        // the read side is shut down; an `EWOULDBLOCK` indicates the read
+        // side is still open.
+        match unsafe {
+            c::recv(
+                borrowed_fd(fd),
+                MaybeUninit::<[u8; 1]>::uninit()
+                    .as_mut_ptr()
+                    .cast::<c::c_void>(),
+                1,
+                c::MSG_PEEK | c::MSG_DONTWAIT,
+            )
+        } {
+            0 => read = false,
+            -1 => {
+                #[allow(unreachable_patterns)] // `EAGAIN` may equal `EWOULDBLOCK`
+                match errno().0 {
+                    c::EAGAIN | c::EWOULDBLOCK => (),
+                    c::ENOTSOCK => not_socket = true,
+                    err => return Err(io::Errno(err)),
+                }
+            }
+            _ => (),
+        }
+    }
+    if write && !not_socket {
+        // Do a `send` with `DONTWAIT` for 0 bytes. An `EPIPE` indicates
+        // the write side is shut down.
+        if unsafe { c::send(borrowed_fd(fd), [].as_ptr(), 0, c::MSG_DONTWAIT) } == -1 {
+            #[allow(unreachable_patterns)] // `EAGAIN` may equal `EWOULDBLOCK`
+            match errno().0 {
+                c::EAGAIN | c::EWOULDBLOCK => (),
+                c::ENOTSOCK => (),
+                c::EPIPE => write = false,
+                err => return Err(io::Errno(err)),
+            }
+        }
+    }
+    Ok((read, write))
+}
+
+#[cfg(target_os = "wasi")]
+#[cfg(feature = "net")]
+pub(crate) fn is_read_write(_fd: BorrowedFd<'_>) -> io::Result<(bool, bool)> {
+    todo!("Implement is_read_write for WASI in terms of fd_fdstat_get");
+}
+
+#[cfg(not(target_os = "wasi"))]
+pub(crate) fn dup(fd: BorrowedFd<'_>) -> io::Result<OwnedFd> {
+    unsafe { ret_owned_fd(c::dup(borrowed_fd(fd))) }
+}
+
+#[cfg(not(target_os = "wasi"))]
+pub(crate) fn dup2(fd: BorrowedFd<'_>, new: &mut OwnedFd) -> io::Result<()> {
+    unsafe { ret_discarded_fd(c::dup2(borrowed_fd(fd), borrowed_fd(new.as_fd()))) }
+}
+
+#[cfg(not(any(
+    target_os = "android",
+    target_os = "dragonfly",
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "redox",
+    target_os = "wasi",
+)))]
+pub(crate) fn dup3(fd: BorrowedFd<'_>, new: &mut OwnedFd, flags: DupFlags) -> io::Result<()> {
+    unsafe {
+        ret_discarded_fd(c::dup3(
+            borrowed_fd(fd),
+            borrowed_fd(new.as_fd()),
+            flags.bits(),
+        ))
+    }
+}
+
+#[cfg(any(
+    target_os = "android",
+    target_os = "dragonfly",
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "redox",
+))]
+pub(crate) fn dup3(fd: BorrowedFd<'_>, new: &mut OwnedFd, _flags: DupFlags) -> io::Result<()> {
+    // Android 5.0 has `dup3`, but libc doesn't have bindings. Emulate it
+    // using `dup2`. We don't need to worry about the difference between
+    // `dup2` and `dup3` when the file descriptors are equal because we
+    // have an `&mut OwnedFd` which means `fd` doesn't alias it.
+    dup2(fd, new)
+}
+
+#[cfg(any(target_os = "ios", target_os = "macos"))]
+pub(crate) fn ioctl_fioclex(fd: BorrowedFd<'_>) -> io::Result<()> {
+    unsafe { ret(c::ioctl(borrowed_fd(fd), c::FIOCLEX)) }
+}
+
+#[cfg(not(any(target_os = "redox", target_os = "wasi")))]
+pub(crate) fn ioctl_tiocexcl(fd: BorrowedFd) -> io::Result<()> {
+    unsafe { ret(c::ioctl(borrowed_fd(fd), c::TIOCEXCL as _)) }
+}
+
+#[cfg(not(any(target_os = "redox", target_os = "wasi")))]
+pub(crate) fn ioctl_tiocnxcl(fd: BorrowedFd) -> io::Result<()> {
+    unsafe { ret(c::ioctl(borrowed_fd(fd), c::TIOCNXCL as _)) }
+}
+
+#[cfg(not(target_os = "wasi"))]
+pub(crate) fn pipe() -> io::Result<(OwnedFd, OwnedFd)> {
+    unsafe {
+        let mut result = MaybeUninit::<[OwnedFd; 2]>::uninit();
+        ret(c::pipe(result.as_mut_ptr().cast::<i32>()))?;
+        let [p0, p1] = result.assume_init();
+        Ok((p0, p1))
+    }
+}
+
+#[cfg(not(any(target_os = "ios", target_os = "macos", target_os = "wasi")))]
+pub(crate) fn pipe_with(flags: PipeFlags) -> io::Result<(OwnedFd, OwnedFd)> {
+    unsafe {
+        let mut result = MaybeUninit::<[OwnedFd; 2]>::uninit();
+        ret(c::pipe2(result.as_mut_ptr().cast::<i32>(), flags.bits()))?;
+        let [p0, p1] = result.assume_init();
+        Ok((p0, p1))
+    }
+}
+
+#[inline]
+pub(crate) fn poll(fds: &mut [PollFd<'_>], timeout: c::c_int) -> io::Result<usize> {
+    let nfds = fds
+        .len()
+        .try_into()
+        .map_err(|_convert_err| io::Errno::INVAL)?;
+
+    ret_c_int(unsafe { c::poll(fds.as_mut_ptr().cast(), nfds, timeout) })
+        .map(|nready| nready as usize)
+}
diff --git a/vendor/rustix/src/imp/libc/io/types.rs b/vendor/rustix/src/imp/libc/io/types.rs
new file mode 100644
index 000000000..483f3a6af
--- /dev/null
+++ b/vendor/rustix/src/imp/libc/io/types.rs
@@ -0,0 +1,89 @@
+use super::super::c;
+#[cfg(not(target_os = "wasi"))]
+use bitflags::bitflags;
+
+#[cfg(any(target_os = "android", target_os = "linux"))]
+bitflags! {
+    /// `RWF_*` constants for use with [`preadv2`] and [`pwritev2`].
+    ///
+    /// [`preadv2`]: crate::io::preadv2
+    /// [`pwritev2`]: crate::io::pwritev
+    pub struct ReadWriteFlags: c::c_int {
+        /// `RWF_DSYNC` (since Linux 4.7)
+        #[cfg(all(target_os = "linux", target_env = "gnu"))]
+        const DSYNC = c::RWF_DSYNC;
+        /// `RWF_HIPRI` (since Linux 4.6)
+        #[cfg(all(target_os = "linux", target_env = "gnu"))]
+        const HIPRI = c::RWF_HIPRI;
+        /// `RWF_SYNC` (since Linux 4.7)
+        #[cfg(all(target_os = "linux", target_env = "gnu"))]
+        const SYNC = c::RWF_SYNC;
+        /// `RWF_NOWAIT` (since Linux 4.14)
+        #[cfg(all(target_os = "linux", target_env = "gnu"))]
+        const NOWAIT = c::RWF_NOWAIT;
+        /// `RWF_APPEND` (since Linux 4.16)
+        #[cfg(all(target_os = "linux", target_env = "gnu"))]
+        const APPEND = c::RWF_APPEND;
+    }
+}
+
+#[cfg(not(target_os = "wasi"))]
+bitflags! {
+    /// `O_*` constants for use with [`dup2`].
+    ///
+    /// [`dup2`]: crate::io::dup2
+    pub struct DupFlags: c::c_int {
+        /// `O_CLOEXEC`
+        #[cfg(not(any(
+            target_os = "android",
+            target_os = "ios",
+            target_os = "macos",
+            target_os = "redox",
+        )))] // Android 5.0 has dup3, but libc doesn't have bindings
+        const CLOEXEC = c::O_CLOEXEC;
+    }
+}
+
+#[cfg(not(any(target_os = "ios", target_os = "macos", target_os = "wasi")))]
+bitflags! {
+    /// `O_*` constants for use with [`pipe_with`].
+    ///
+    /// [`pipe_with`]: crate::io::pipe_with
+    pub struct PipeFlags: c::c_int {
+        /// `O_CLOEXEC`
+        const CLOEXEC = c::O_CLOEXEC;
+        /// `O_DIRECT`
+        #[cfg(not(any(target_os = "illumos", target_os = "openbsd", target_os = "redox")))]
+        const DIRECT = c::O_DIRECT;
+        /// `O_NONBLOCK`
+        const NONBLOCK = c::O_NONBLOCK;
+    }
+}
+
+#[cfg(any(target_os = "android", target_os = "linux"))]
+bitflags! {
+    /// `EFD_*` flags for use with [`eventfd`].
+    ///
+    /// [`eventfd`]: crate::io::eventfd
+    pub struct EventfdFlags: c::c_int {
+        /// `EFD_CLOEXEC`
+        const CLOEXEC = c::EFD_CLOEXEC;
+        /// `EFD_NONBLOCK`
+        const NONBLOCK = c::EFD_NONBLOCK;
+        /// `EFD_SEMAPHORE`
+        const SEMAPHORE = c::EFD_SEMAPHORE;
+    }
+}
+
+/// `PIPE_BUF`—The maximum size of a write to a pipe guaranteed to be atomic.
+#[cfg(not(any(target_os = "illumos", target_os = "redox", target_os = "wasi")))]
+pub const PIPE_BUF: usize = c::PIPE_BUF;
+
+#[cfg(not(any(windows, target_os = "redox")))]
+pub(crate) const AT_FDCWD: c::c_int = c::AT_FDCWD;
+#[cfg(not(windows))]
+pub(crate) const STDIN_FILENO: c::c_int = c::STDIN_FILENO;
+#[cfg(not(windows))]
+pub(crate) const STDOUT_FILENO: c::c_int = c::STDOUT_FILENO;
+#[cfg(not(windows))]
+pub(crate) const STDERR_FILENO: c::c_int = c::STDERR_FILENO;
diff --git a/vendor/rustix/src/imp/libc/io/windows_syscalls.rs b/vendor/rustix/src/imp/libc/io/windows_syscalls.rs
new file mode 100644
index 000000000..4c6e86f94
--- /dev/null
+++ b/vendor/rustix/src/imp/libc/io/windows_syscalls.rs
@@ -0,0 +1,39 @@
+//! Windows system calls in the `io` module.
+
+use super::super::c;
+use super::super::conv::{borrowed_fd, ret, ret_c_int};
+use super::super::fd::LibcFd;
+use crate::fd::{BorrowedFd, RawFd};
+use crate::io;
+use crate::io::PollFd;
+use core::convert::TryInto;
+use core::mem::MaybeUninit;
+
+pub(crate) unsafe fn close(raw_fd: RawFd) {
+    let _ = c::close(raw_fd as LibcFd);
+}
+
+pub(crate) fn ioctl_fionread(fd: BorrowedFd<'_>) -> io::Result<u64> {
+    let mut nread = MaybeUninit::<c::c_ulong>::uninit();
+    unsafe {
+        ret(c::ioctl(borrowed_fd(fd), c::FIONREAD, nread.as_mut_ptr()))?;
+        Ok(u64::from(nread.assume_init()))
+    }
+}
+
+pub(crate) fn ioctl_fionbio(fd: BorrowedFd<'_>, value: bool) -> io::Result<()> {
+    unsafe {
+        let mut data = value as c::c_uint;
+        ret(c::ioctl(borrowed_fd(fd), c::FIONBIO, &mut data))
+    }
+}
+
+pub(crate) fn poll(fds: &mut [PollFd<'_>], timeout: c::c_int) -> io::Result<usize> {
+    let nfds = fds
+        .len()
+        .try_into()
+        .map_err(|_convert_err| io::Errno::INVAL)?;
+
+    ret_c_int(unsafe { c::poll(fds.as_mut_ptr().cast(), nfds, timeout) })
+        .map(|nready| nready as usize)
+}
diff --git a/vendor/rustix/src/imp/libc/io_lifetimes.rs b/vendor/rustix/src/imp/libc/io_lifetimes.rs
new file mode 100644
index 000000000..b0b14b7c8
--- /dev/null
+++ b/vendor/rustix/src/imp/libc/io_lifetimes.rs
@@ -0,0 +1,109 @@
+//! `io_lifetimes` types for Windows assuming that Fd is Socket.
+//!
+//! We can make this assumption since `rustix` supports only `rustix::net` on
+//! Windows.
+
+pub use io_lifetimes::{BorrowedSocket as BorrowedFd, OwnedSocket as OwnedFd};
+#[cfg(feature = "std")]
+pub use std::os::windows::io::RawSocket as RawFd;
+pub(crate) use windows_sys::Win32::Networking::WinSock::SOCKET as LibcFd;
+
+// Re-export the `Socket` traits so that users can implement them.
+pub use io_lifetimes::{AsSocket, FromSocket, IntoSocket};
+
+/// A version of [`AsRawFd`] for use with Winsock2 API.
+///
+/// [`AsRawFd`]: https://doc.rust-lang.org/stable/std/os/unix/io/trait.AsRawFd.html
+pub trait AsRawFd {
+    /// A version of [`as_raw_fd`] for use with Winsock2 API.
+    ///
+    /// [`as_raw_fd`]: https://doc.rust-lang.org/stable/std/os/unix/io/trait.FromRawFd.html#tymethod.as_raw_fd
+    fn as_raw_fd(&self) -> RawFd;
+}
+#[cfg(feature = "std")]
+impl<T: std::os::windows::io::AsRawSocket> AsRawFd for T {
+    #[inline]
+    fn as_raw_fd(&self) -> RawFd {
+        self.as_raw_socket()
+    }
+}
+
+/// A version of [`IntoRawFd`] for use with Winsock2 API.
+///
+/// [`IntoRawFd`]: https://doc.rust-lang.org/stable/std/os/unix/io/trait.IntoRawFd.html
+pub trait IntoRawFd {
+    /// A version of [`into_raw_fd`] for use with Winsock2 API.
+    ///
+    /// [`into_raw_fd`]: https://doc.rust-lang.org/stable/std/os/unix/io/trait.FromRawFd.html#tymethod.into_raw_fd
+    fn into_raw_fd(self) -> RawFd;
+}
+#[cfg(feature = "std")]
+impl<T: std::os::windows::io::IntoRawSocket> IntoRawFd for T {
+    #[inline]
+    fn into_raw_fd(self) -> RawFd {
+        self.into_raw_socket()
+    }
+}
+
+/// A version of [`FromRawFd`] for use with Winsock2 API.
+///
+/// [`FromRawFd`]: https://doc.rust-lang.org/stable/std/os/unix/io/trait.FromRawFd.html
+pub trait FromRawFd {
+    /// A version of [`from_raw_fd`] for use with Winsock2 API.
+    ///
+    /// [`from_raw_fd`]: https://doc.rust-lang.org/stable/std/os/unix/io/trait.FromRawFd.html#tymethod.from_raw_fd
+    unsafe fn from_raw_fd(raw_fd: RawFd) -> Self;
+}
+#[cfg(feature = "std")]
+impl<T: std::os::windows::io::FromRawSocket> FromRawFd for T {
+    #[inline]
+    unsafe fn from_raw_fd(raw_fd: RawFd) -> Self {
+        Self::from_raw_socket(raw_fd)
+    }
+}
+
+/// A version of [`AsFd`] for use with Winsock2 API.
+///
+/// [`AsFd`]: https://doc.rust-lang.org/stable/std/os/unix/io/trait.AsFd.html
+pub trait AsFd {
+    /// An `as_fd` function for Winsock2, where a `Fd` is a `Socket`.
+    fn as_fd(&self) -> BorrowedFd;
+}
+impl<T: AsSocket> AsFd for T {
+    #[inline]
+    fn as_fd(&self) -> BorrowedFd {
+        self.as_socket()
+    }
+}
+
+/// A version of [`IntoFd`] for use with Winsock2 API.
+///
+/// [`IntoFd`]: https://docs.rs/io-lifetimes/latest/io_lifetimes/trait.IntoFd.html
+pub trait IntoFd {
+    /// A version of [`into_fd`] for use with Winsock2 API.
+    ///
+    /// [`into_fd`]: https://docs.rs/io-lifetimes/latest/io_lifetimes/trait.IntoFd.html#tymethod.into_fd
+    fn into_fd(self) -> OwnedFd;
+}
+impl<T: IntoSocket> IntoFd for T {
+    #[inline]
+    fn into_fd(self) -> OwnedFd {
+        self.into_socket()
+    }
+}
+
+/// A version of [`FromFd`] for use with Winsock2 API.
+///
+/// [`FromFd`]: https://docs.rs/io-lifetimes/latest/io_lifetimes/trait.FromFd.html
+pub trait FromFd {
+    /// A version of [`from_fd`] for use with Winsock2 API.
+    ///
+    /// [`from_fd`]: https://docs.rs/io-lifetimes/latest/io_lifetimes/trait.FromFd.html#tymethod.from_fd
+    fn from_fd(fd: OwnedFd) -> Self;
+}
+impl<T: FromSocket> FromFd for T {
+    #[inline]
+    fn from_fd(fd: OwnedFd) -> Self {
+        Self::from_socket(fd)
+    }
+}
diff --git a/vendor/rustix/src/imp/libc/io_uring/mod.rs b/vendor/rustix/src/imp/libc/io_uring/mod.rs
new file mode 100644
index 000000000..ef944f04d
--- /dev/null
+++ b/vendor/rustix/src/imp/libc/io_uring/mod.rs
@@ -0,0 +1 @@
+pub(crate) mod syscalls;
diff --git a/vendor/rustix/src/imp/libc/io_uring/syscalls.rs b/vendor/rustix/src/imp/libc/io_uring/syscalls.rs
new file mode 100644
index 000000000..d1e68363c
--- /dev/null
+++ b/vendor/rustix/src/imp/libc/io_uring/syscalls.rs
@@ -0,0 +1,55 @@
+//! libc syscalls supporting `rustix::io_uring`.
+
+use super::super::c;
+use super::super::conv::{borrowed_fd, syscall_ret, syscall_ret_owned_fd, syscall_ret_u32};
+use crate::fd::BorrowedFd;
+use crate::io::{self, OwnedFd};
+use crate::io_uring::{io_uring_params, IoringEnterFlags, IoringRegisterOp};
+use linux_raw_sys::general::{__NR_io_uring_enter, __NR_io_uring_register, __NR_io_uring_setup};
+
+#[inline]
+pub(crate) fn io_uring_setup(entries: u32, params: &mut io_uring_params) -> io::Result<OwnedFd> {
+    unsafe {
+        syscall_ret_owned_fd(c::syscall(
+            __NR_io_uring_setup as _,
+            entries as usize,
+            params,
+        ))
+    }
+}
+
+#[inline]
+pub(crate) unsafe fn io_uring_register(
+    fd: BorrowedFd<'_>,
+    opcode: IoringRegisterOp,
+    arg: *const c::c_void,
+    nr_args: u32,
+) -> io::Result<()> {
+    syscall_ret(c::syscall(
+        __NR_io_uring_register as _,
+        borrowed_fd(fd),
+        opcode as u32 as usize,
+        arg,
+        nr_args as usize,
+    ))
+}
+
+#[inline]
+pub(crate) unsafe fn io_uring_enter(
+    fd: BorrowedFd<'_>,
+    to_submit: u32,
+    min_complete: u32,
+    flags: IoringEnterFlags,
+    arg: *const c::c_void,
+    size: usize,
+) -> io::Result<u32> {
+    syscall_ret_u32(c::syscall(
+        __NR_io_uring_enter as _,
+        borrowed_fd(fd),
+        to_submit as usize,
+        min_complete as usize,
+        flags.bits() as usize,
+        arg,
+        size,
+    ))
+}
diff --git a/vendor/rustix/src/imp/libc/mm/mod.rs b/vendor/rustix/src/imp/libc/mm/mod.rs
new file mode 100644
index 000000000..1e0181a99
--- /dev/null
+++ b/vendor/rustix/src/imp/libc/mm/mod.rs
@@ -0,0 +1,2 @@
+pub(crate) mod syscalls;
+pub(crate) mod types;
diff --git a/vendor/rustix/src/imp/libc/mm/syscalls.rs b/vendor/rustix/src/imp/libc/mm/syscalls.rs
new file mode 100644
index 000000000..ee670b5bf
--- /dev/null
+++ b/vendor/rustix/src/imp/libc/mm/syscalls.rs
@@ -0,0 +1,218 @@
+//! libc syscalls supporting `rustix::mm`.
+
+use super::super::c;
+#[cfg(any(target_os = "android", target_os = "linux"))]
+use super::super::conv::syscall_ret_owned_fd;
+use super::super::conv::{borrowed_fd, no_fd, ret};
+use super::super::offset::libc_mmap;
+#[cfg(not(target_os = "redox"))]
+use super::types::Advice;
+#[cfg(target_os = "linux")]
+use super::types::MremapFlags;
+use super::types::{MapFlags, MprotectFlags, MsyncFlags, ProtFlags};
+#[cfg(any(target_os = "android", target_os = "linux"))]
+use super::types::{MlockFlags, UserfaultfdFlags};
+use crate::fd::BorrowedFd;
+use crate::io;
+#[cfg(any(target_os = "android", target_os = "linux"))]
+use crate::io::OwnedFd;
+
+#[cfg(not(target_os = "redox"))]
+pub(crate) fn madvise(addr: *mut c::c_void, len: usize, advice: Advice) -> io::Result<()> {
+    // On Linux platforms, `MADV_DONTNEED` has the same value as
+    // `POSIX_MADV_DONTNEED` but different behavior. We remap it to a different
+    // value, and check for it here.
+    #[cfg(target_os = "linux")]
+    if let Advice::LinuxDontNeed = advice {
+        return unsafe { ret(c::madvise(addr, len, c::MADV_DONTNEED)) };
+    }
+
+    #[cfg(not(target_os = "android"))]
+    {
+        let err = unsafe { c::posix_madvise(addr, len, advice as c::c_int) };
+
+        // `posix_madvise` returns its error status rather than using `errno`.
+        if err == 0 {
+            Ok(())
+        } else {
+            Err(io::Errno(err))
+        }
+    }
+
+    #[cfg(target_os = "android")]
+    {
+        if let Advice::DontNeed = advice {
+            // Do nothing. Linux's `MADV_DONTNEED` isn't the same as
+            // `POSIX_MADV_DONTNEED`, so just discard `MADV_DONTNEED`.
+            Ok(())
+        } else {
+            unsafe { ret(c::madvise(addr, len, advice as c::c_int)) }
+        }
+    }
+}
+
+pub(crate) unsafe fn msync(addr: *mut c::c_void, len: usize, flags: MsyncFlags) -> io::Result<()> {
+    let err = c::msync(addr, len, flags.bits());
+
+    // `msync` returns its error status rather than using `errno`.
+    if err == 0 {
+        Ok(())
+    } else {
+        Err(io::Errno(err))
+    }
+}
+
+/// # Safety
+///
+/// `mmap` is primarily unsafe due to the `addr` parameter, as anything working
+/// with memory pointed to by raw pointers is unsafe.
+pub(crate) unsafe fn mmap(
+    ptr: *mut c::c_void,
+    len: usize,
+    prot: ProtFlags,
+    flags: MapFlags,
+    fd: BorrowedFd<'_>,
+    offset: u64,
+) -> io::Result<*mut c::c_void> {
+    let res = libc_mmap(
+        ptr,
+        len,
+        prot.bits(),
+        flags.bits(),
+        borrowed_fd(fd),
+        offset as i64,
+    );
+    if res == c::MAP_FAILED {
+        Err(io::Errno::last_os_error())
+    } else {
+        Ok(res)
+    }
+}
+
+/// # Safety
+///
+/// `mmap` is primarily unsafe due to the `addr` parameter, as anything working
+/// with memory pointed to by raw pointers is unsafe.
+pub(crate) unsafe fn mmap_anonymous(
+    ptr: *mut c::c_void,
+    len: usize,
+    prot: ProtFlags,
+    flags: MapFlags,
+) -> io::Result<*mut c::c_void> {
+    let res = libc_mmap(
+        ptr,
+        len,
+        prot.bits(),
+        flags.bits() | c::MAP_ANONYMOUS,
+        no_fd(),
+        0,
+    );
+    if res == c::MAP_FAILED {
+        Err(io::Errno::last_os_error())
+    } else {
+        Ok(res)
+    }
+}
+
+pub(crate) unsafe fn mprotect(
+    ptr: *mut c::c_void,
+    len: usize,
+    flags: MprotectFlags,
+) -> io::Result<()> {
+    ret(c::mprotect(ptr, len, flags.bits()))
+}
+
+pub(crate) unsafe fn munmap(ptr: *mut c::c_void, len: usize) -> io::Result<()> {
+    ret(c::munmap(ptr, len))
+}
+
+/// # Safety
+///
+/// `mremap` is primarily unsafe due to the `old_address` parameter, as
+/// anything working with memory pointed to by raw pointers is unsafe.
+#[cfg(target_os = "linux")]
+pub(crate) unsafe fn mremap(
+    old_address: *mut c::c_void,
+    old_size: usize,
+    new_size: usize,
+    flags: MremapFlags,
+) -> io::Result<*mut c::c_void> {
+    let res = c::mremap(old_address, old_size, new_size, flags.bits());
+    if res == c::MAP_FAILED {
+        Err(io::Errno::last_os_error())
+    } else {
+        Ok(res)
+    }
+}
+
+/// # Safety
+///
+/// `mremap_fixed` is primarily unsafe due to the `old_address` and
+/// `new_address` parameters, as anything working with memory pointed to by raw
+/// pointers is unsafe.
+#[cfg(target_os = "linux")]
+pub(crate) unsafe fn mremap_fixed(
+    old_address: *mut c::c_void,
+    old_size: usize,
+    new_size: usize,
+    flags: MremapFlags,
+    new_address: *mut c::c_void,
+) -> io::Result<*mut c::c_void> {
+    let res = c::mremap(
+        old_address,
+        old_size,
+        new_size,
+        flags.bits() | c::MAP_FIXED,
+        new_address,
+    );
+    if res == c::MAP_FAILED {
+        Err(io::Errno::last_os_error())
+    } else {
+        Ok(res)
+    }
+}
+
+/// # Safety
+///
+/// `mlock` operates on raw pointers and may round out to the nearest page
+/// boundaries.
+#[inline]
+pub(crate) unsafe fn mlock(addr: *mut c::c_void, length: usize) -> io::Result<()> {
+    ret(c::mlock(addr, length))
+}
+
+/// # Safety
+///
+/// `mlock_with` operates on raw pointers and may round out to the nearest page
+/// boundaries.
+#[cfg(any(target_os = "android", target_os = "linux"))]
+#[inline]
+pub(crate) unsafe fn mlock_with(
+    addr: *mut c::c_void,
+    length: usize,
+    flags: MlockFlags,
+) -> io::Result<()> {
+    weak_or_syscall! {
+        fn mlock2(
+            addr: *const c::c_void,
+            len: c::size_t,
+            flags: c::c_int
+        ) via SYS_mlock2 -> c::c_int
+    }
+
+    ret(mlock2(addr, length, flags.bits()))
+}
+
+/// # Safety
+///
+/// `munlock` operates on raw pointers and may round out to the nearest page
+/// boundaries.
+#[inline]
+pub(crate) unsafe fn munlock(addr: *mut c::c_void, length: usize) -> io::Result<()> {
+    ret(c::munlock(addr, length))
+}
+
+#[cfg(any(target_os = "android", target_os = "linux"))]
+pub(crate) unsafe fn userfaultfd(flags: UserfaultfdFlags) -> io::Result<OwnedFd> {
+    syscall_ret_owned_fd(c::syscall(c::SYS_userfaultfd, flags.bits()))
+}
diff --git a/vendor/rustix/src/imp/libc/mm/types.rs b/vendor/rustix/src/imp/libc/mm/types.rs
new file mode 100644
index 000000000..385b6c0e6
--- /dev/null
+++ b/vendor/rustix/src/imp/libc/mm/types.rs
@@ -0,0 +1,397 @@
+use super::super::c;
+use bitflags::bitflags;
+
+bitflags! {
+    /// `PROT_*` flags for use with [`mmap`].
+    ///
+    /// For `PROT_NONE`, use `ProtFlags::empty()`.
+    ///
+    /// [`mmap`]: crate::io::mmap
+    pub struct ProtFlags: c::c_int {
+        /// `PROT_READ`
+        const READ = c::PROT_READ;
+        /// `PROT_WRITE`
+        const WRITE = c::PROT_WRITE;
+        /// `PROT_EXEC`
+        const EXEC = c::PROT_EXEC;
+    }
+}
+
+bitflags! {
+    /// `PROT_*` flags for use with [`mprotect`].
+    ///
+    /// For `PROT_NONE`, use `MprotectFlags::empty()`.
+    ///
+    /// [`mprotect`]: crate::io::mprotect
+    pub struct MprotectFlags: c::c_int {
+        /// `PROT_READ`
+        const READ = c::PROT_READ;
+        /// `PROT_WRITE`
+        const WRITE = c::PROT_WRITE;
+        /// `PROT_EXEC`
+        const EXEC = c::PROT_EXEC;
+        /// `PROT_GROWSUP`
+        #[cfg(any(target_os = "android", target_os = "linux"))]
+        const GROWSUP = c::PROT_GROWSUP;
+        /// `PROT_GROWSDOWN`
+        #[cfg(any(target_os = "android", target_os = "linux"))]
+        const GROWSDOWN = c::PROT_GROWSDOWN;
+    }
+}
+
+bitflags! {
+    /// `MAP_*` flags for use with [`mmap`].
+    ///
+    /// For `MAP_ANONYMOUS` (aka `MAP_ANON`), see [`mmap_anonymous`].
+    ///
+    /// [`mmap`]: crate::io::mmap
+    /// [`mmap_anonymous`]: crates::io::mmap_anonymous
+    pub struct MapFlags: c::c_int {
+        /// `MAP_SHARED`
+        const SHARED = c::MAP_SHARED;
+        /// `MAP_SHARED_VALIDATE`
+        #[cfg(not(any(
+            target_os = "android",
+            target_os = "dragonfly",
+            target_os = "emscripten",
+            target_os = "freebsd",
+            target_os = "fuchsia",
+            target_os = "illumos",
+            target_os = "ios",
+            target_os = "macos",
+            target_os = "netbsd",
+            target_os = "openbsd",
+            target_os = "redox",
+        )))]
+        const SHARED_VALIDATE = c::MAP_SHARED_VALIDATE;
+        /// `MAP_PRIVATE`
+        const PRIVATE = c::MAP_PRIVATE;
+        /// `MAP_DENYWRITE`
+        #[cfg(not(any(
+            target_os = "dragonfly",
+            target_os = "freebsd",
+            target_os = "illumos",
+            target_os = "ios",
+            target_os = "macos",
+            target_os = "netbsd",
+            target_os = "openbsd",
+            target_os = "redox",
+        )))]
+        const DENYWRITE = c::MAP_DENYWRITE;
+        /// `MAP_FIXED`
+        const FIXED = c::MAP_FIXED;
+        /// `MAP_FIXED_NOREPLACE`
+        #[cfg(not(any(
+            target_os = "android",
+            target_os = "dragonfly",
+            target_os = "emscripten",
+            target_os = "freebsd",
+            target_os = "fuchsia",
+            target_os = "illumos",
+            target_os = "ios",
+            target_os = "macos",
+            target_os = "netbsd",
+            target_os = "openbsd",
+            target_os = "redox",
+        )))]
+        const FIXED_NOREPLACE = c::MAP_FIXED_NOREPLACE;
+        /// `MAP_GROWSDOWN`
+        #[cfg(not(any(
+            target_os = "dragonfly",
+            target_os = "freebsd",
+            target_os = "illumos",
+            target_os = "ios",
+            target_os = "macos",
+            target_os = "netbsd",
+            target_os = "openbsd",
+            target_os = "redox",
+        )))]
+        const GROWSDOWN = c::MAP_GROWSDOWN;
+        /// `MAP_HUGETLB`
+        #[cfg(not(any(
+            target_os = "dragonfly",
+            target_os = "freebsd",
+            target_os = "illumos",
+            target_os = "ios",
+            target_os = "macos",
+            target_os = "netbsd",
+            target_os = "openbsd",
+            target_os = "redox",
+        )))]
+        const HUGETLB = c::MAP_HUGETLB;
+        /// `MAP_HUGE_2MB`
+        #[cfg(not(any(
+            target_os = "android",
+            target_os = "dragonfly",
+            target_os = "emscripten",
+            target_os = "freebsd",
+            target_os = "fuchsia",
+            target_os = "illumos",
+            target_os = "ios",
+            target_os = "macos",
+            target_os = "netbsd",
+            target_os = "openbsd",
+            target_os = "redox",
+        )))]
+        const HUGE_2MB = c::MAP_HUGE_2MB;
+        /// `MAP_HUGE_1GB`
+        #[cfg(not(any(
+            target_os = "android",
+            target_os = "dragonfly",
+            target_os = "emscripten",
+            target_os = "freebsd",
+            target_os = "fuchsia",
+            target_os = "illumos",
+            target_os = "ios",
+            target_os = "macos",
+            target_os = "netbsd",
+            target_os = "openbsd",
+            target_os = "redox",
+        )))]
+        const HUGE_1GB = c::MAP_HUGE_1GB;
+        /// `MAP_LOCKED`
+        #[cfg(not(any(
+            target_os = "dragonfly",
+            target_os = "freebsd",
+            target_os = "illumos",
+            target_os = "ios",
+            target_os = "macos",
+            target_os = "netbsd",
+            target_os = "openbsd",
+            target_os = "redox",
+        )))]
+        const LOCKED = c::MAP_LOCKED;
+        /// `MAP_NORESERVE`
+        #[cfg(not(any(target_os = "dragonfly", target_os = "freebsd", target_os = "redox")))]
+        const NORESERVE = c::MAP_NORESERVE;
+        /// `MAP_POPULATE`
+        #[cfg(not(any(
+            target_os = "dragonfly",
+            target_os = "freebsd",
+            target_os = "illumos",
+            target_os = "ios",
+            target_os = "macos",
+            target_os = "netbsd",
+            target_os = "openbsd",
+            target_os = "redox",
+        )))]
+        const POPULATE = c::MAP_POPULATE;
+        /// `MAP_STACK`
+        #[cfg(not(any(
+            target_os = "dragonfly",
+            target_os = "illumos",
+            target_os = "ios",
+            target_os = "macos",
+            target_os = "netbsd",
+            target_os = "redox",
+        )))]
+        const STACK = c::MAP_STACK;
+        /// `MAP_SYNC`
+        #[cfg(not(any(
+            target_os = "android",
+            target_os = "dragonfly",
+            target_os = "emscripten",
+            target_os = "freebsd",
+            target_os = "fuchsia",
+            target_os = "illumos",
+            target_os = "ios",
+            target_os = "macos",
+            target_os = "netbsd",
+            target_os = "openbsd",
+            target_os = "redox",
+            all(
+                any(target_os = "android", target_os = "linux"),
+                any(target_arch = "mips", target_arch = "mips64"),
+            )
+        )))]
+        const SYNC = c::MAP_SYNC;
+        /// `MAP_UNINITIALIZED`
+        #[cfg(any())]
+        const UNINITIALIZED = c::MAP_UNINITIALIZED;
+    }
+}
+
+#[cfg(target_os = "linux")]
+bitflags! {
+    /// `MREMAP_*` flags for use with [`mremap`].
+    ///
+    /// For `MREMAP_FIXED`, see [`mremap_fixed`].
+    ///
+    /// [`mremap`]: crate::io::mremap
+    /// [`mremap_fixed`]: crate::io::mremap_fixed
+    pub struct MremapFlags: i32 {
+        /// `MREMAP_MAYMOVE`
+        const MAYMOVE = c::MREMAP_MAYMOVE;
+    }
+}
+
+bitflags! {
+    /// `MS_*` flags for use with [`msync`].
+    ///
+    /// [`msync`]: crate::io::msync
+    pub struct MsyncFlags: i32 {
+        /// `MS_SYNC`—Requests an update and waits for it to complete.
+        const SYNC = c::MS_SYNC;
+        /// `MS_ASYNC`—Specifies that an update be scheduled, but the call
+        /// returns immediately.
+        const ASYNC = c::MS_ASYNC;
+        /// `MS_INVALIDATE`—Asks to invalidate other mappings of the same
+        /// file (so that they can be updated with the fresh values just
+        /// written).
+        const INVALIDATE = c::MS_INVALIDATE;
+    }
+}
+
+#[cfg(any(target_os = "android", target_os = "linux"))]
+bitflags! {
+    /// `MLOCK_*` flags for use with [`mlock_with`].
+    ///
+    /// [`mlock_with`]: crate::io::mlock_with
+    pub struct MlockFlags: i32 {
+        /// `MLOCK_ONFAULT`
+        const ONFAULT = c::MLOCK_ONFAULT as _;
+    }
+}
+
+/// `POSIX_MADV_*` constants for use with [`madvise`].
+///
+/// [`madvise`]: crate::mm::madvise
+#[cfg(not(target_os = "redox"))]
+#[derive(Debug, Copy, Clone, Eq, PartialEq)]
+#[repr(i32)]
+#[non_exhaustive]
+pub enum Advice {
+    /// `POSIX_MADV_NORMAL`
+    #[cfg(not(target_os = "android"))]
+    Normal = c::POSIX_MADV_NORMAL,
+
+    /// `POSIX_MADV_NORMAL`
+    #[cfg(target_os = "android")]
+    Normal = c::MADV_NORMAL,
+
+    /// `POSIX_MADV_SEQUENTIAL`
+    #[cfg(not(target_os = "android"))]
+    Sequential = c::POSIX_MADV_SEQUENTIAL,
+
+    /// `POSIX_MADV_SEQUENTIAL`
+    #[cfg(target_os = "android")]
+    Sequential = c::MADV_SEQUENTIAL,
+
+    /// `POSIX_MADV_RANDOM`
+    #[cfg(not(target_os = "android"))]
+    Random = c::POSIX_MADV_RANDOM,
+
+    /// `POSIX_MADV_RANDOM`
+    #[cfg(target_os = "android")]
+    Random = c::MADV_RANDOM,
+
+    /// `POSIX_MADV_WILLNEED`
+    #[cfg(not(target_os = "android"))]
+    WillNeed = c::POSIX_MADV_WILLNEED,
+
+    /// `POSIX_MADV_WILLNEED`
+    #[cfg(target_os = "android")]
+    WillNeed = c::MADV_WILLNEED,
+
+    /// `POSIX_MADV_DONTNEED`
+    #[cfg(not(any(target_os = "android", target_os = "emscripten")))]
+    DontNeed = c::POSIX_MADV_DONTNEED,
+
+    /// `POSIX_MADV_DONTNEED`
+    #[cfg(target_os = "android")]
+    DontNeed = i32::MAX - 1,
+
+    /// `MADV_DONTNEED`
+    // `MADV_DONTNEED` has the same value as `POSIX_MADV_DONTNEED`. We don't
+    // have a separate `posix_madvise` from `madvise`, so we expose a special
+    // value which we special-case.
+    #[cfg(target_os = "linux")]
+    LinuxDontNeed = i32::MAX,
+
+    /// `MADV_DONTNEED`
+    #[cfg(target_os = "android")]
+    LinuxDontNeed = c::MADV_DONTNEED,
+    /// `MADV_FREE`
+    #[cfg(any(target_os = "android", target_os = "linux"))]
+    LinuxFree = c::MADV_FREE,
+    /// `MADV_REMOVE`
+    #[cfg(any(target_os = "android", target_os = "linux"))]
+    LinuxRemove = c::MADV_REMOVE,
+    /// `MADV_DONTFORK`
+    #[cfg(any(target_os = "android", target_os = "linux"))]
+    LinuxDontFork = c::MADV_DONTFORK,
+    /// `MADV_DOFORK`
+    #[cfg(any(target_os = "android", target_os = "linux"))]
+    LinuxDoFork = c::MADV_DOFORK,
+    /// `MADV_HWPOISON`
+    #[cfg(any(target_os = "android", target_os = "linux"))]
+    LinuxHwPoison = c::MADV_HWPOISON,
+    /// `MADV_SOFT_OFFLINE`
+    #[cfg(all(
+        any(target_os = "android", target_os = "linux"),
+        not(any(target_arch = "mips", target_arch = "mips64")),
+    ))]
+    LinuxSoftOffline = c::MADV_SOFT_OFFLINE,
+    /// `MADV_MERGEABLE`
+    #[cfg(any(target_os = "android", target_os = "linux"))]
+    LinuxMergeable = c::MADV_MERGEABLE,
+    /// `MADV_UNMERGEABLE`
+    #[cfg(any(target_os = "android", target_os = "linux"))]
+    LinuxUnmergeable = c::MADV_UNMERGEABLE,
+    /// `MADV_HUGEPAGE` (since Linux 2.6.38)
+    #[cfg(any(target_os = "android", target_os = "linux"))]
+    LinuxHugepage = c::MADV_HUGEPAGE,
+    /// `MADV_NOHUGEPAGE` (since Linux 2.6.38)
+    #[cfg(any(target_os = "android", target_os = "linux"))]
+    LinuxNoHugepage = c::MADV_NOHUGEPAGE,
+    /// `MADV_DONTDUMP` (since Linux 3.4)
+    #[cfg(any(target_os = "android", target_os = "linux"))]
+    LinuxDontDump = c::MADV_DONTDUMP,
+    /// `MADV_DODUMP` (since Linux 3.4)
+    #[cfg(any(target_os = "android", target_os = "linux"))]
+    LinuxDoDump = c::MADV_DODUMP,
+    /// `MADV_WIPEONFORK` (since Linux 4.14)
+    #[cfg(any(target_os = "android", target_os = "linux"))]
+    #[cfg(feature = "mm")]
+    LinuxWipeOnFork = linux_raw_sys::general::MADV_WIPEONFORK as i32,
+    /// `MADV_KEEPONFORK` (since Linux 4.14)
+    #[cfg(any(target_os = "android", target_os = "linux"))]
+    #[cfg(feature = "mm")]
+    LinuxKeepOnFork = linux_raw_sys::general::MADV_KEEPONFORK as i32,
+    /// `MADV_COLD` (since Linux 5.4)
+    #[cfg(any(target_os = "android", target_os = "linux"))]
+    #[cfg(feature = "mm")]
+    LinuxCold = linux_raw_sys::general::MADV_COLD as i32,
+    /// `MADV_PAGEOUT` (since Linux 5.4)
+    #[cfg(any(target_os = "android", target_os = "linux"))]
+    #[cfg(feature = "mm")]
+    LinuxPageOut = linux_raw_sys::general::MADV_PAGEOUT as i32,
+    /// `MADV_POPULATE_READ` (since Linux 5.14)
+    #[cfg(any(target_os = "android", target_os = "linux"))]
+    #[cfg(feature = "mm")]
+    LinuxPopulateRead = linux_raw_sys::general::MADV_POPULATE_READ as i32,
+    /// `MADV_POPULATE_WRITE` (since Linux 5.14)
+    #[cfg(any(target_os = "android", target_os = "linux"))]
+    #[cfg(feature = "mm")]
+    LinuxPopulateWrite = linux_raw_sys::general::MADV_POPULATE_WRITE as i32,
+}
+
+#[cfg(target_os = "emscripten")]
+impl Advice {
+    /// `POSIX_MADV_DONTNEED`
+    #[allow(non_upper_case_globals)]
+    pub const DontNeed: Self = Self::Normal;
+}
+
+#[cfg(any(target_os = "android", target_os = "linux"))]
+bitflags! {
+    /// `O_*` flags for use with [`userfaultfd`].
+    ///
+    /// [`userfaultfd`]: crate::io::userfaultfd
+    pub struct UserfaultfdFlags: c::c_int {
+        /// `O_CLOEXEC`
+        const CLOEXEC = c::O_CLOEXEC;
+        /// `O_NONBLOCK`
+        const NONBLOCK = c::O_NONBLOCK;
+    }
+}
diff --git a/vendor/rustix/src/imp/libc/mod.rs b/vendor/rustix/src/imp/libc/mod.rs
new file mode 100644
index 000000000..e99a323ce
--- /dev/null
+++ b/vendor/rustix/src/imp/libc/mod.rs
@@ -0,0 +1,111 @@
+//! The libc backend.
+//!
+//! On most platforms, this uses the `libc` crate to make system calls. On
+//! Windows, this uses the Winsock2 API in `windows-sys`, which can be adapted
+//! to have a very `libc`-like interface.
+
+// Every FFI call requires an unsafe block, and there are a lot of FFI
+// calls. For now, set this to allow for the libc backend.
+#![allow(clippy::undocumented_unsafe_blocks)]
+// Lots of libc types vary between platforms, so we often need a `.into()` on
+// one platform where it's redundant on another.
+#![allow(clippy::useless_conversion)]
+
+#[cfg(not(any(windows, target_os = "wasi")))]
+#[macro_use]
+mod weak;
+
+mod conv;
+mod offset;
+
+#[cfg(windows)]
+mod io_lifetimes;
+#[cfg(not(windows))]
+#[cfg(not(feature = "std"))]
+pub(crate) mod fd {
+    pub(crate) use super::c::c_int as LibcFd;
+    pub use crate::io::fd::*;
+}
+#[cfg(windows)]
+pub(crate) mod fd {
+    pub use super::io_lifetimes::*;
+}
+#[cfg(not(windows))]
+#[cfg(feature = "std")]
+pub(crate) mod fd {
+    pub use io_lifetimes::*;
+
+    #[cfg(target_os = "wasi")]
+    #[allow(unused_imports)]
+    pub(crate) use super::c::c_int as LibcFd;
+    #[cfg(unix)]
+    #[allow(unused_imports)]
+    pub(crate) use std::os::unix::io::RawFd as LibcFd;
+    #[cfg(unix)]
+    pub use std::os::unix::io::{AsRawFd, FromRawFd, IntoRawFd, RawFd};
+    #[cfg(target_os = "wasi")]
+    pub use std::os::wasi::io::{AsRawFd, FromRawFd, IntoRawFd, RawFd};
+}
+
+// On Windows we emulate selected libc-compatible interfaces. On non-Windows,
+// we just use libc here, since this is the libc backend.
+#[cfg(windows)]
+#[path = "winsock_c.rs"]
+pub(crate) mod c;
+#[cfg(not(windows))]
+pub(crate) use libc as c;
+
+#[cfg(not(windows))]
+// #[cfg(feature = "fs")] // TODO: Enable this once `OwnedFd` moves out of the tree.
+pub(crate) mod fs;
+pub(crate) mod io;
+#[cfg(any(target_os = "android", target_os = "linux"))]
+#[cfg(feature = "io_uring")]
+#[cfg_attr(doc_cfg, doc(cfg(feature = "io_uring")))]
+pub(crate) mod io_uring;
+#[cfg(not(any(windows, target_os = "wasi")))]
+#[cfg(any(feature = "mm", feature = "time", target_arch = "x86"))] // vdso.rs uses `madvise`
+pub(crate) mod mm;
+#[cfg(not(any(target_os = "redox", target_os = "wasi")))]
+#[cfg(feature = "net")]
+pub(crate) mod net;
+#[cfg(not(windows))]
+#[cfg(any(
+    feature = "param",
+    feature = "runtime",
+    feature = "time",
+    target_arch = "x86",
+))]
+pub(crate) mod param;
+#[cfg(not(windows))]
+pub(crate) mod process;
+#[cfg(not(windows))]
+#[cfg(feature = "rand")]
+pub(crate) mod rand;
+#[cfg(not(any(windows, target_os = "wasi")))]
+#[cfg(feature = "termios")]
+pub(crate) mod termios;
+#[cfg(not(windows))]
+#[cfg(feature = "thread")]
+pub(crate) mod thread;
+#[cfg(not(windows))]
+pub(crate) mod time;
+
+/// If the host libc is glibc, return `true` if it is less than version 2.25.
+///
+/// To restate and clarify, this function returning true does not mean the libc
+/// is glibc just that if it is glibc, it is less than version 2.25.
+///
+/// For now, this function is only available on Linux, but if it ends up being
+/// used beyond that, this could be changed to e.g. `#[cfg(unix)]`.
+#[cfg(all(unix, target_env = "gnu"))]
+pub(crate) fn if_glibc_is_less_than_2_25() -> bool {
+    // This is also defined inside `weak_or_syscall!` in
+    // imp/libc/rand/syscalls.rs, but it's not convenient to re-export the weak
+    // symbol from that macro, so we duplicate it at a small cost here.
+    weak! { fn getrandom(*mut c::c_void, c::size_t, c::c_uint) -> c::ssize_t }
+
+    // glibc 2.25 has `getrandom`, which is how we satisfy the API contract of
+    // this function. But, there are likely other libc versions which have it.
+    getrandom.get().is_none()
+}
diff --git a/vendor/rustix/src/imp/libc/net/addr.rs b/vendor/rustix/src/imp/libc/net/addr.rs
new file mode 100644
index 000000000..1aeda5e5d
--- /dev/null
+++ b/vendor/rustix/src/imp/libc/net/addr.rs
@@ -0,0 +1,320 @@
+//! IPv4, IPv6, and Socket addresses.
+
+use super::super::c;
+#[cfg(unix)]
+use crate::ffi::CStr;
+#[cfg(unix)]
+use crate::io;
+#[cfg(unix)]
+use crate::path;
+#[cfg(not(windows))]
+use core::convert::TryInto;
+#[cfg(unix)]
+use core::fmt;
+#[cfg(unix)]
+use core::slice;
+
+/// `struct sockaddr_un`
+#[cfg(unix)]
+#[derive(Clone)]
+#[doc(alias = "sockaddr_un")]
+pub struct SocketAddrUnix {
+    pub(crate) unix: c::sockaddr_un,
+    #[cfg(not(any(
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    )))]
+    len: c::socklen_t,
+}
+
+#[cfg(unix)]
+impl SocketAddrUnix {
+    /// Construct a new Unix-domain address from a filesystem path.
+    #[inline]
+    pub fn new<P: path::Arg>(path: P) -> io::Result<Self> {
+        path.into_with_c_str(Self::_new)
+    }
+
+    #[inline]
+    fn _new(path: &CStr) -> io::Result<Self> {
+        let mut unix = Self::init();
+        let bytes = path.to_bytes_with_nul();
+        if bytes.len() > unix.sun_path.len() {
+            return Err(io::Errno::NAMETOOLONG);
+        }
+        for (i, b) in bytes.iter().enumerate() {
+            unix.sun_path[i] = *b as c::c_char;
+        }
+
+        #[cfg(any(
+            target_os = "dragonfly",
+            target_os = "freebsd",
+            target_os = "ios",
+            target_os = "macos",
+            target_os = "netbsd",
+            target_os = "openbsd",
+        ))]
+        {
+            unix.sun_len = (offsetof_sun_path() + bytes.len()).try_into().unwrap();
+        }
+
+        Ok(Self {
+            unix,
+            #[cfg(not(any(
+                target_os = "dragonfly",
+                target_os = "freebsd",
+                target_os = "ios",
+                target_os = "macos",
+                target_os = "netbsd",
+                target_os = "openbsd",
+            )))]
+            len: (offsetof_sun_path() + bytes.len()).try_into().unwrap(),
+        })
+    }
+
+    /// Construct a new abstract Unix-domain address from a byte slice.
+    #[cfg(any(target_os = "android", target_os = "linux"))]
+    #[inline]
+    pub fn new_abstract_name(name: &[u8]) -> io::Result<Self> {
+        let mut unix = Self::init();
+        if 1 + name.len() > unix.sun_path.len() {
+            return Err(io::Errno::NAMETOOLONG);
+        }
+        unix.sun_path[0] = b'\0' as c::c_char;
+        for (i, b) in name.iter().enumerate() {
+            unix.sun_path[1 + i] = *b as c::c_char;
+        }
+        let len = offsetof_sun_path() + 1 + name.len();
+        let len = len.try_into().unwrap();
+        Ok(Self {
+            unix,
+            #[cfg(not(any(
+                target_os = "dragonfly",
+                target_os = "freebsd",
+                target_os = "ios",
+                target_os = "macos",
+                target_os = "netbsd",
+                target_os = "openbsd",
+            )))]
+            len,
+        })
+    }
+
+    fn init() -> c::sockaddr_un {
+        c::sockaddr_un {
+            #[cfg(any(
+                target_os = "dragonfly",
+                target_os = "freebsd",
+                target_os = "ios",
+                target_os = "macos",
+                target_os = "netbsd",
+                target_os = "openbsd",
+            ))]
+            sun_len: 0,
+            sun_family: c::AF_UNIX as _,
+            #[cfg(any(
+                target_os = "dragonfly",
+                target_os = "freebsd",
+                target_os = "ios",
+                target_os = "macos",
+                target_os = "netbsd",
+                target_os = "openbsd",
+            ))]
+            sun_path: [0; 104],
+            #[cfg(not(any(
+                target_os = "dragonfly",
+                target_os = "freebsd",
+                target_os = "ios",
+                target_os = "macos",
+                target_os = "netbsd",
+                target_os = "openbsd",
+            )))]
+            sun_path: [0; 108],
+        }
+    }
+
+    /// For a filesystem path address, return the path.
+    #[inline]
+    pub fn path(&self) -> Option<&CStr> {
+        let len = self.len();
+        if len != 0 && self.unix.sun_path[0] != b'\0' as c::c_char {
+            let end = len as usize - offsetof_sun_path();
+            let bytes = &self.unix.sun_path[..end];
+            // Safety: `from_raw_parts` to convert from `&[c_char]` to `&[u8]`. And
+            // `from_bytes_with_nul_unchecked` since the string is NUL-terminated.
+            unsafe {
+                Some(CStr::from_bytes_with_nul_unchecked(slice::from_raw_parts(
+                    bytes.as_ptr().cast(),
+                    bytes.len(),
+                )))
+            }
+        } else {
+            None
+        }
+    }
+
+    /// For an abstract address, return the identifier.
+    #[cfg(any(target_os = "android", target_os = "linux"))]
+    #[inline]
+    pub fn abstract_name(&self) -> Option<&[u8]> {
+        let len = self.len();
+        if len != 0 && self.unix.sun_path[0] == b'\0' as c::c_char {
+            let end = len as usize - offsetof_sun_path();
+            let bytes = &self.unix.sun_path[1..end];
+            // Safety: `from_raw_parts` to convert from `&[c_char]` to `&[u8]`.
+            unsafe { Some(slice::from_raw_parts(bytes.as_ptr().cast(), bytes.len())) }
+        } else {
+            None
+        }
+    }
+
+    #[inline]
+    pub(crate) fn addr_len(&self) -> c::socklen_t {
+        #[cfg(not(any(
+            target_os = "dragonfly",
+            target_os = "freebsd",
+            target_os = "ios",
+            target_os = "macos",
+            target_os = "netbsd",
+            target_os = "openbsd",
+        )))]
+        {
+            self.len
+        }
+        #[cfg(any(
+            target_os = "dragonfly",
+            target_os = "freebsd",
+            target_os = "ios",
+            target_os = "macos",
+            target_os = "netbsd",
+            target_os = "openbsd",
+        ))]
+        {
+            c::socklen_t::from(self.unix.sun_len)
+        }
+    }
+
+    #[inline]
+    pub(crate) fn len(&self) -> usize {
+        self.addr_len() as usize
+    }
+}
+
+#[cfg(unix)]
+impl PartialEq for SocketAddrUnix {
+    #[inline]
+    fn eq(&self, other: &Self) -> bool {
+        let self_len = self.len() - offsetof_sun_path();
+        let other_len = other.len() - offsetof_sun_path();
+        self.unix.sun_path[..self_len].eq(&other.unix.sun_path[..other_len])
+    }
+}
+
+#[cfg(unix)]
+impl Eq for SocketAddrUnix {}
+
+#[cfg(unix)]
+impl PartialOrd for SocketAddrUnix {
+    #[inline]
+    fn partial_cmp(&self, other: &Self) -> Option<core::cmp::Ordering> {
+        let self_len = self.len() - offsetof_sun_path();
+        let other_len = other.len() - offsetof_sun_path();
+        self.unix.sun_path[..self_len].partial_cmp(&other.unix.sun_path[..other_len])
+    }
+}
+
+#[cfg(unix)]
+impl Ord for SocketAddrUnix {
+    #[inline]
+    fn cmp(&self, other: &Self) -> core::cmp::Ordering {
+        let self_len = self.len() - offsetof_sun_path();
+        let other_len = other.len() - offsetof_sun_path();
+        self.unix.sun_path[..self_len].cmp(&other.unix.sun_path[..other_len])
+    }
+}
+
+#[cfg(unix)]
+impl core::hash::Hash for SocketAddrUnix {
+    #[inline]
+    fn hash<H: core::hash::Hasher>(&self, state: &mut H) {
+        let self_len = self.len() - offsetof_sun_path();
+        self.unix.sun_path[..self_len].hash(state)
+    }
+}
+
+#[cfg(unix)]
+impl fmt::Debug for SocketAddrUnix {
+    fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result {
+        if let Some(path) = self.path() {
+            path.fmt(fmt)
+        } else {
+            #[cfg(any(target_os = "android", target_os = "linux"))]
+            if let Some(name) = self.abstract_name() {
+                return name.fmt(fmt);
+            }
+
+            "(unnamed)".fmt(fmt)
+        }
+    }
+}
+
+/// `struct sockaddr_storage` as a raw struct.
+pub type SocketAddrStorage = c::sockaddr_storage;
+
+/// Return the offset of the `sun_path` field of `sockaddr_un`.
+#[cfg(not(windows))]
+#[inline]
+pub(crate) fn offsetof_sun_path() -> usize {
+    let z = c::sockaddr_un {
+        #[cfg(any(
+            target_os = "dragonfly",
+            target_os = "freebsd",
+            target_os = "ios",
+            target_os = "macos",
+            target_os = "netbsd",
+            target_os = "openbsd",
+        ))]
+        sun_len: 0_u8,
+        #[cfg(any(
+            target_os = "dragonfly",
+            target_os = "freebsd",
+            target_os = "ios",
+            target_os = "macos",
+            target_os = "netbsd",
+            target_os = "openbsd",
+        ))]
+        sun_family: 0_u8,
+        #[cfg(not(any(
+            target_os = "dragonfly",
+            target_os = "freebsd",
+            target_os = "ios",
+            target_os = "macos",
+            target_os = "netbsd",
+            target_os = "openbsd",
+        )))]
+        sun_family: 0_u16,
+        #[cfg(any(
+            target_os = "dragonfly",
+            target_os = "freebsd",
+            target_os = "ios",
+            target_os = "macos",
+            target_os = "netbsd",
+            target_os = "openbsd",
+        ))]
+        sun_path: [0; 104],
+        #[cfg(not(any(
+            target_os = "dragonfly",
+            target_os = "freebsd",
+            target_os = "ios",
+            target_os = "macos",
+            target_os = "netbsd",
+            target_os = "openbsd",
+        )))]
+        sun_path: [0; 108],
+    };
+    (crate::utils::as_ptr(&z.sun_path) as usize) - (crate::utils::as_ptr(&z) as usize)
+}
diff --git a/vendor/rustix/src/imp/libc/net/ext.rs b/vendor/rustix/src/imp/libc/net/ext.rs
new file mode 100644
index 000000000..7b5313c51
--- /dev/null
+++ b/vendor/rustix/src/imp/libc/net/ext.rs
@@ -0,0 +1,223 @@
+use super::super::c;
+
+/// The windows `sockaddr_in6` type is a union with accessor functions which
+/// are not `const fn`. Define our own layout-compatible version so that we
+/// can transmute in and out of it.
+#[cfg(windows)]
+#[repr(C)]
+struct sockaddr_in6 {
+    sin6_family: u16,
+    sin6_port: u16,
+    sin6_flowinfo: u32,
+    sin6_addr: c::in6_addr,
+    sin6_scope_id: u32,
+}
+
+#[cfg(not(windows))]
+#[inline]
+pub(crate) const fn in_addr_s_addr(addr: c::in_addr) -> u32 {
+    addr.s_addr
+}
+
+#[cfg(not(feature = "std"))]
+#[cfg(windows)]
+#[inline]
+pub(crate) const fn in_addr_s_addr(addr: c::in_addr) -> u32 {
+    // This should be `*addr.S_un.S_addr()`, except that isn't a `const fn`.
+    unsafe { core::mem::transmute(addr) }
+}
+
+// TODO: With Rust 1.55, we can use the above `in_addr_s_addr` definition that
+// uses a const-fn transmute.
+#[cfg(feature = "std")]
+#[cfg(windows)]
+#[inline]
+pub(crate) fn in_addr_s_addr(addr: c::in_addr) -> u32 {
+    // This should be `*addr.S_un.S_addr()`, except that isn't a `const fn`.
+    unsafe { core::mem::transmute(addr) }
+}
+
+#[cfg(not(windows))]
+#[inline]
+pub(crate) const fn in_addr_new(s_addr: u32) -> c::in_addr {
+    c::in_addr { s_addr }
+}
+
+#[cfg(not(feature = "std"))]
+#[cfg(windows)]
+#[inline]
+pub(crate) const fn in_addr_new(s_addr: u32) -> c::in_addr {
+    unsafe { core::mem::transmute(s_addr) }
+}
+
+// TODO: With Rust 1.55, we can use the above `in_addr_new` definition that
+// uses a const-fn transmute.
+#[cfg(feature = "std")]
+#[cfg(windows)]
+#[inline]
+pub(crate) fn in_addr_new(s_addr: u32) -> c::in_addr {
+    unsafe { core::mem::transmute(s_addr) }
+}
+
+#[cfg(not(windows))]
+#[inline]
+pub(crate) const fn in6_addr_s6_addr(addr: c::in6_addr) -> [u8; 16] {
+    addr.s6_addr
+}
+
+#[cfg(not(feature = "std"))]
+#[cfg(windows)]
+#[inline]
+pub(crate) const fn in6_addr_s6_addr(addr: c::in6_addr) -> [u8; 16] {
+    unsafe { core::mem::transmute(addr) }
+}
+
+// TODO: With Rust 1.55, we can use the above `in6_addr_s6_addr` definition
+// that uses a const-fn transmute.
+#[cfg(feature = "std")]
+#[cfg(windows)]
+#[inline]
+pub(crate) fn in6_addr_s6_addr(addr: c::in6_addr) -> [u8; 16] {
+    unsafe { core::mem::transmute(addr) }
+}
+
+#[cfg(not(windows))]
+#[inline]
+pub(crate) const fn in6_addr_new(s6_addr: [u8; 16]) -> c::in6_addr {
+    c::in6_addr { s6_addr }
+}
+
+#[cfg(not(feature = "std"))]
+#[cfg(windows)]
+#[inline]
+pub(crate) const fn in6_addr_new(s6_addr: [u8; 16]) -> c::in6_addr {
+    unsafe { core::mem::transmute(s6_addr) }
+}
+
+// TODO: With Rust 1.55, we can use the above `in6_addr_new` definition that
+// uses a const-fn transmute.
+#[cfg(feature = "std")]
+#[cfg(windows)]
+#[inline]
+pub(crate) fn in6_addr_new(s6_addr: [u8; 16]) -> c::in6_addr {
+    unsafe { core::mem::transmute(s6_addr) }
+}
+
+#[cfg(not(windows))]
+#[inline]
+pub(crate) const fn sockaddr_in6_sin6_scope_id(addr: c::sockaddr_in6) -> u32 {
+    addr.sin6_scope_id
+}
+
+#[cfg(not(feature = "std"))]
+#[cfg(windows)]
+#[inline]
+pub(crate) const fn sockaddr_in6_sin6_scope_id(addr: c::sockaddr_in6) -> u32 {
+    let addr: sockaddr_in6 = unsafe { core::mem::transmute(addr) };
+    addr.sin6_scope_id
+}
+
+// TODO: With Rust 1.55, we can use the above `sockaddr_in6_sin6_scope_id`
+// definition that uses a const-fn transmute.
+#[cfg(feature = "std")]
+#[cfg(windows)]
+#[inline]
+pub(crate) fn sockaddr_in6_sin6_scope_id(addr: c::sockaddr_in6) -> u32 {
+    let addr: sockaddr_in6 = unsafe { core::mem::transmute(addr) };
+    addr.sin6_scope_id
+}
+
+#[cfg(not(feature = "std"))]
+#[cfg(not(windows))]
+#[inline]
+pub(crate) fn sockaddr_in6_sin6_scope_id_mut(addr: &mut c::sockaddr_in6) -> &mut u32 {
+    &mut addr.sin6_scope_id
+}
+
+#[cfg(not(feature = "std"))]
+#[cfg(windows)]
+#[inline]
+pub(crate) fn sockaddr_in6_sin6_scope_id_mut(addr: &mut c::sockaddr_in6) -> &mut u32 {
+    let addr: &mut sockaddr_in6 = unsafe { core::mem::transmute(addr) };
+    &mut addr.sin6_scope_id
+}
+
+#[cfg(not(windows))]
+#[inline]
+pub(crate) const fn sockaddr_in6_new(
+    #[cfg(any(
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    ))]
+    sin6_len: u8,
+    sin6_family: c::sa_family_t,
+    sin6_port: u16,
+    sin6_flowinfo: u32,
+    sin6_addr: c::in6_addr,
+    sin6_scope_id: u32,
+) -> c::sockaddr_in6 {
+    c::sockaddr_in6 {
+        #[cfg(any(
+            target_os = "dragonfly",
+            target_os = "freebsd",
+            target_os = "ios",
+            target_os = "macos",
+            target_os = "netbsd",
+            target_os = "openbsd",
+        ))]
+        sin6_len,
+        sin6_family,
+        sin6_port,
+        sin6_flowinfo,
+        sin6_addr,
+        sin6_scope_id,
+        #[cfg(target_os = "illumos")]
+        __sin6_src_id: 0,
+    }
+}
+
+#[cfg(not(feature = "std"))]
+#[cfg(windows)]
+#[inline]
+pub(crate) const fn sockaddr_in6_new(
+    sin6_family: u16,
+    sin6_port: u16,
+    sin6_flowinfo: u32,
+    sin6_addr: c::in6_addr,
+    sin6_scope_id: u32,
+) -> c::sockaddr_in6 {
+    let addr = sockaddr_in6 {
+        sin6_family,
+        sin6_port,
+        sin6_flowinfo,
+        sin6_addr,
+        sin6_scope_id,
+    };
+    unsafe { core::mem::transmute(addr) }
+}
+
+// TODO: With Rust 1.55, we can use the above `sockaddr_in6_new` definition
+// that uses a const-fn transmute.
+#[cfg(feature = "std")]
+#[cfg(windows)]
+#[inline]
+pub(crate) fn sockaddr_in6_new(
+    sin6_family: u16,
+    sin6_port: u16,
+    sin6_flowinfo: u32,
+    sin6_addr: c::in6_addr,
+    sin6_scope_id: u32,
+) -> c::sockaddr_in6 {
+    let addr = sockaddr_in6 {
+        sin6_family,
+        sin6_port,
+        sin6_flowinfo,
+        sin6_addr,
+        sin6_scope_id,
+    };
+    unsafe { core::mem::transmute(addr) }
+}
diff --git a/vendor/rustix/src/imp/libc/net/mod.rs b/vendor/rustix/src/imp/libc/net/mod.rs
new file mode 100644
index 000000000..f7196ae4f
--- /dev/null
+++ b/vendor/rustix/src/imp/libc/net/mod.rs
@@ -0,0 +1,7 @@
+pub(crate) mod addr;
+pub(crate) mod ext;
+pub(crate) mod read_sockaddr;
+pub(crate) mod send_recv;
+pub(crate) mod syscalls;
+pub(crate) mod types;
+pub(crate) mod write_sockaddr;
diff --git a/vendor/rustix/src/imp/libc/net/read_sockaddr.rs b/vendor/rustix/src/imp/libc/net/read_sockaddr.rs
new file mode 100644
index 000000000..cb76b296c
--- /dev/null
+++ b/vendor/rustix/src/imp/libc/net/read_sockaddr.rs
@@ -0,0 +1,249 @@
+use super::super::c;
+#[cfg(unix)]
+use super::addr::SocketAddrUnix;
+use super::ext::{in6_addr_s6_addr, in_addr_s_addr, sockaddr_in6_sin6_scope_id};
+#[cfg(not(windows))]
+use crate::ffi::CStr;
+use crate::io;
+use crate::net::{Ipv4Addr, Ipv6Addr, SocketAddrAny, SocketAddrV4, SocketAddrV6};
+#[cfg(not(windows))]
+use alloc::vec::Vec;
+use core::mem::size_of;
+
+// This must match the header of `sockaddr`.
+#[repr(C)]
+struct sockaddr_header {
+    #[cfg(any(
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    ))]
+    sa_len: u8,
+    #[cfg(any(
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    ))]
+    ss_family: u8,
+    #[cfg(not(any(
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    )))]
+    ss_family: u16,
+}
+
+#[inline]
+unsafe fn read_ss_family(storage: *const c::sockaddr_storage) -> u16 {
+    // Assert that we know the layout of `sockaddr`.
+    let _ = c::sockaddr {
+        #[cfg(any(
+            target_os = "dragonfly",
+            target_os = "freebsd",
+            target_os = "ios",
+            target_os = "macos",
+            target_os = "netbsd",
+            target_os = "openbsd",
+        ))]
+        sa_len: 0_u8,
+        #[cfg(any(
+            target_os = "dragonfly",
+            target_os = "freebsd",
+            target_os = "ios",
+            target_os = "macos",
+            target_os = "netbsd",
+            target_os = "openbsd",
+        ))]
+        sa_family: 0_u8,
+        #[cfg(not(any(
+            target_os = "dragonfly",
+            target_os = "freebsd",
+            target_os = "ios",
+            target_os = "macos",
+            target_os = "netbsd",
+            target_os = "openbsd",
+        )))]
+        sa_family: 0_u16,
+        sa_data: [0; 14],
+    };
+
+    (*storage.cast::<sockaddr_header>()).ss_family.into()
+}
+
+/// Set the `ss_family` field of a socket address to `AF_UNSPEC`, so that we
+/// can test for `AF_UNSPEC` to test whether it was stored to.
+pub(crate) unsafe fn initialize_family_to_unspec(storage: *mut c::sockaddr_storage) {
+    (*storage.cast::<sockaddr_header>()).ss_family = c::AF_UNSPEC as _;
+}
+
+pub(crate) unsafe fn read_sockaddr(
+    storage: *const c::sockaddr_storage,
+    len: usize,
+) -> io::Result<SocketAddrAny> {
+    #[cfg(unix)]
+    let offsetof_sun_path = super::addr::offsetof_sun_path();
+
+    if len < size_of::<c::sa_family_t>() {
+        return Err(io::Errno::INVAL);
+    }
+    match read_ss_family(storage).into() {
+        c::AF_INET => {
+            if len < size_of::<c::sockaddr_in>() {
+                return Err(io::Errno::INVAL);
+            }
+            let decode = *storage.cast::<c::sockaddr_in>();
+            Ok(SocketAddrAny::V4(SocketAddrV4::new(
+                Ipv4Addr::from(u32::from_be(in_addr_s_addr(decode.sin_addr))),
+                u16::from_be(decode.sin_port),
+            )))
+        }
+        c::AF_INET6 => {
+            if len < size_of::<c::sockaddr_in6>() {
+                return Err(io::Errno::INVAL);
+            }
+            let decode = *storage.cast::<c::sockaddr_in6>();
+            #[cfg(not(windows))]
+            let s6_addr = decode.sin6_addr.s6_addr;
+            #[cfg(windows)]
+            let s6_addr = decode.sin6_addr.u.Byte;
+            #[cfg(not(windows))]
+            let sin6_scope_id = decode.sin6_scope_id;
+            #[cfg(windows)]
+            let sin6_scope_id = decode.Anonymous.sin6_scope_id;
+            Ok(SocketAddrAny::V6(SocketAddrV6::new(
+                Ipv6Addr::from(s6_addr),
+                u16::from_be(decode.sin6_port),
+                u32::from_be(decode.sin6_flowinfo),
+                sin6_scope_id,
+            )))
+        }
+        #[cfg(unix)]
+        c::AF_UNIX => {
+            if len < offsetof_sun_path {
+                return Err(io::Errno::INVAL);
+            }
+            if len == offsetof_sun_path {
+                Ok(SocketAddrAny::Unix(SocketAddrUnix::new(&[][..]).unwrap()))
+            } else {
+                let decode = *storage.cast::<c::sockaddr_un>();
+
+                // Trim off unused bytes from the end of `path_bytes`.
+                let path_bytes = if cfg!(target_os = "freebsd") {
+                    // FreeBSD sometimes sets the length to longer than the length
+                    // of the NUL-terminated string. Find the NUL and truncate the
+                    // string accordingly.
+                    &decode.sun_path[..decode.sun_path.iter().position(|b| *b == 0).unwrap()]
+                } else {
+                    // Otherwise, use the provided length.
+                    let provided_len = len - 1 - offsetof_sun_path;
+                    if decode.sun_path[provided_len] != b'\0' as c::c_char {
+                        return Err(io::Errno::INVAL);
+                    }
+                    debug_assert_eq!(
+                        CStr::from_ptr(decode.sun_path.as_ptr()).to_bytes().len(),
+                        provided_len
+                    );
+                    &decode.sun_path[..provided_len]
+                };
+
+                Ok(SocketAddrAny::Unix(
+                    SocketAddrUnix::new(path_bytes.iter().map(|c| *c as u8).collect::<Vec<u8>>())
+                        .unwrap(),
+                ))
+            }
+        }
+        _ => Err(io::Errno::INVAL),
+    }
+}
+
+pub(crate) unsafe fn maybe_read_sockaddr_os(
+    storage: *const c::sockaddr_storage,
+    len: usize,
+) -> Option<SocketAddrAny> {
+    if len == 0 {
+        return None;
+    }
+
+    assert!(len >= size_of::<c::sa_family_t>());
+    let family = read_ss_family(storage).into();
+    if family == c::AF_UNSPEC {
+        None
+    } else {
+        Some(inner_read_sockaddr_os(family, storage, len))
+    }
+}
+
+pub(crate) unsafe fn read_sockaddr_os(
+    storage: *const c::sockaddr_storage,
+    len: usize,
+) -> SocketAddrAny {
+    assert!(len >= size_of::<c::sa_family_t>());
+    let family = read_ss_family(storage).into();
+    inner_read_sockaddr_os(family, storage, len)
+}
+
+unsafe fn inner_read_sockaddr_os(
+    family: c::c_int,
+    storage: *const c::sockaddr_storage,
+    len: usize,
+) -> SocketAddrAny {
+    #[cfg(unix)]
+    let offsetof_sun_path = super::addr::offsetof_sun_path();
+
+    assert!(len >= size_of::<c::sa_family_t>());
+    match family {
+        c::AF_INET => {
+            assert!(len >= size_of::<c::sockaddr_in>());
+            let decode = *storage.cast::<c::sockaddr_in>();
+            SocketAddrAny::V4(SocketAddrV4::new(
+                Ipv4Addr::from(u32::from_be(in_addr_s_addr(decode.sin_addr))),
+                u16::from_be(decode.sin_port),
+            ))
+        }
+        c::AF_INET6 => {
+            assert!(len >= size_of::<c::sockaddr_in6>());
+            let decode = *storage.cast::<c::sockaddr_in6>();
+            SocketAddrAny::V6(SocketAddrV6::new(
+                Ipv6Addr::from(in6_addr_s6_addr(decode.sin6_addr)),
+                u16::from_be(decode.sin6_port),
+                u32::from_be(decode.sin6_flowinfo),
+                sockaddr_in6_sin6_scope_id(decode),
+            ))
+        }
+        #[cfg(unix)]
+        c::AF_UNIX => {
+            assert!(len >= offsetof_sun_path);
+            if len == offsetof_sun_path {
+                SocketAddrAny::Unix(SocketAddrUnix::new(&[][..]).unwrap())
+            } else {
+                let decode = *storage.cast::<c::sockaddr_un>();
+                assert_eq!(
+                    decode.sun_path[len - 1 - offsetof_sun_path],
+                    b'\0' as c::c_char
+                );
+                let path_bytes = &decode.sun_path[..len - 1 - offsetof_sun_path];
+
+                // FreeBSD sometimes sets the length to longer than the length
+                // of the NUL-terminated string. Find the NUL and truncate the
+                // string accordingly.
+                #[cfg(target_os = "freebsd")]
+                let path_bytes = &path_bytes[..path_bytes.iter().position(|b| *b == 0).unwrap()];
+
+                SocketAddrAny::Unix(
+                    SocketAddrUnix::new(path_bytes.iter().map(|c| *c as u8).collect::<Vec<u8>>())
+                        .unwrap(),
+                )
+            }
+        }
+        other => unimplemented!("{:?}", other),
+    }
+}
diff --git a/vendor/rustix/src/imp/libc/net/send_recv.rs b/vendor/rustix/src/imp/libc/net/send_recv.rs
new file mode 100644
index 000000000..9ab908d62
--- /dev/null
+++ b/vendor/rustix/src/imp/libc/net/send_recv.rs
@@ -0,0 +1,77 @@
+use super::super::c;
+use bitflags::bitflags;
+
+bitflags! {
+    /// `MSG_*`
+    pub struct SendFlags: i32 {
+        /// `MSG_CONFIRM`
+        #[cfg(not(any(
+            windows,
+            target_os = "dragonfly",
+            target_os = "freebsd",
+            target_os = "illumos",
+            target_os = "ios",
+            target_os = "macos",
+            target_os = "netbsd",
+            target_os = "openbsd",
+        )))]
+        const CONFIRM = c::MSG_CONFIRM;
+        /// `MSG_DONTROUTE`
+        const DONTROUTE = c::MSG_DONTROUTE;
+        /// `MSG_DONTWAIT`
+        #[cfg(not(windows))]
+        const DONTWAIT = c::MSG_DONTWAIT;
+        /// `MSG_EOR`
+        #[cfg(not(windows))]
+        const EOT = c::MSG_EOR;
+        /// `MSG_MORE`
+        #[cfg(not(any(
+            windows,
+            target_os = "dragonfly",
+            target_os = "freebsd",
+            target_os = "illumos",
+            target_os = "ios",
+            target_os = "macos",
+            target_os = "netbsd",
+            target_os = "openbsd",
+        )))]
+        const MORE = c::MSG_MORE;
+        #[cfg(not(any(windows, target_os = "ios", target_os = "macos")))]
+        /// `MSG_NOSIGNAL`
+        const NOSIGNAL = c::MSG_NOSIGNAL;
+        /// `MSG_OOB`
+        const OOB = c::MSG_OOB;
+    }
+}
+
+bitflags! {
+    /// `MSG_*`
+    pub struct RecvFlags: i32 {
+        #[cfg(not(any(windows, target_os = "illumos", target_os = "ios", target_os = "macos")))]
+        /// `MSG_CMSG_CLOEXEC`
+        const CMSG_CLOEXEC = c::MSG_CMSG_CLOEXEC;
+        /// `MSG_DONTWAIT`
+        #[cfg(not(windows))]
+        const DONTWAIT = c::MSG_DONTWAIT;
+        /// `MSG_ERRQUEUE`
+        #[cfg(not(any(
+            windows,
+            target_os = "dragonfly",
+            target_os = "freebsd",
+            target_os = "illumos",
+            target_os = "ios",
+            target_os = "macos",
+            target_os = "netbsd",
+            target_os = "openbsd",
+        )))]
+        const ERRQUEUE = c::MSG_ERRQUEUE;
+        /// `MSG_OOB`
+        const OOB = c::MSG_OOB;
+        /// `MSG_PEEK`
+        const PEEK = c::MSG_PEEK;
+        /// `MSG_TRUNC`
+        const TRUNC = c::MSG_TRUNC as c::c_int;
+        /// `MSG_WAITALL`
+        const WAITALL = c::MSG_WAITALL;
+    }
+}
diff --git a/vendor/rustix/src/imp/libc/net/syscalls.rs b/vendor/rustix/src/imp/libc/net/syscalls.rs
new file mode 100644
index 000000000..b0bab2e31
--- /dev/null
+++ b/vendor/rustix/src/imp/libc/net/syscalls.rs
@@ -0,0 +1,866 @@
+//! libc syscalls supporting `rustix::net`.
+
+use super::super::c;
+use super::super::conv::{borrowed_fd, ret, ret_owned_fd, ret_send_recv, send_recv_len};
+#[cfg(unix)]
+use super::addr::SocketAddrUnix;
+use super::ext::{in6_addr_new, in_addr_new};
+#[cfg(not(any(target_os = "redox", target_os = "wasi")))]
+use super::read_sockaddr::initialize_family_to_unspec;
+#[cfg(not(any(target_os = "redox", target_os = "wasi")))]
+use super::read_sockaddr::{maybe_read_sockaddr_os, read_sockaddr_os};
+#[cfg(not(any(target_os = "redox", target_os = "wasi")))]
+use super::send_recv::{RecvFlags, SendFlags};
+#[cfg(not(any(target_os = "redox", target_os = "wasi")))]
+use super::types::{AcceptFlags, AddressFamily, Protocol, Shutdown, SocketFlags, SocketType};
+#[cfg(not(any(target_os = "redox", target_os = "wasi")))]
+use super::write_sockaddr::{encode_sockaddr_v4, encode_sockaddr_v6};
+use crate::fd::BorrowedFd;
+use crate::io::{self, OwnedFd};
+use crate::net::{SocketAddrAny, SocketAddrV4, SocketAddrV6};
+use crate::utils::as_ptr;
+use core::convert::TryInto;
+use core::mem::{size_of, MaybeUninit};
+#[cfg(not(any(target_os = "redox", target_os = "wasi")))]
+use core::ptr::null_mut;
+
+#[cfg(not(any(target_os = "redox", target_os = "wasi")))]
+pub(crate) fn recv(fd: BorrowedFd<'_>, buf: &mut [u8], flags: RecvFlags) -> io::Result<usize> {
+    let nrecv = unsafe {
+        ret_send_recv(c::recv(
+            borrowed_fd(fd),
+            buf.as_mut_ptr().cast(),
+            send_recv_len(buf.len()),
+            flags.bits(),
+        ))?
+    };
+    Ok(nrecv as usize)
+}
+
+#[cfg(not(any(target_os = "redox", target_os = "wasi")))]
+pub(crate) fn send(fd: BorrowedFd<'_>, buf: &[u8], flags: SendFlags) -> io::Result<usize> {
+    let nwritten = unsafe {
+        ret_send_recv(c::send(
+            borrowed_fd(fd),
+            buf.as_ptr().cast(),
+            send_recv_len(buf.len()),
+            flags.bits(),
+        ))?
+    };
+    Ok(nwritten as usize)
+}
+
+#[cfg(not(any(target_os = "redox", target_os = "wasi")))]
+pub(crate) fn recvfrom(
+    fd: BorrowedFd<'_>,
+    buf: &mut [u8],
+    flags: RecvFlags,
+) -> io::Result<(usize, Option<SocketAddrAny>)> {
+    unsafe {
+        let mut storage = MaybeUninit::<c::sockaddr_storage>::uninit();
+        let mut len = size_of::<c::sockaddr_storage>() as c::socklen_t;
+
+        // `recvfrom` does not write to the storage if the socket is
+        // connection-oriented sockets, so we initialize the family field to
+        // `AF_UNSPEC` so that we can detect this case.
+        initialize_family_to_unspec(storage.as_mut_ptr());
+
+        let nread = ret_send_recv(c::recvfrom(
+            borrowed_fd(fd),
+            buf.as_mut_ptr().cast(),
+            send_recv_len(buf.len()),
+            flags.bits(),
+            storage.as_mut_ptr().cast(),
+            &mut len,
+        ))?;
+        Ok((
+            nread as usize,
+            maybe_read_sockaddr_os(storage.as_ptr(), len.try_into().unwrap()),
+        ))
+    }
+}
+
+#[cfg(not(any(target_os = "redox", target_os = "wasi")))]
+pub(crate) fn sendto_v4(
+    fd: BorrowedFd<'_>,
+    buf: &[u8],
+    flags: SendFlags,
+    addr: &SocketAddrV4,
+) -> io::Result<usize> {
+    let nwritten = unsafe {
+        ret_send_recv(c::sendto(
+            borrowed_fd(fd),
+            buf.as_ptr().cast(),
+            send_recv_len(buf.len()),
+            flags.bits(),
+            as_ptr(&encode_sockaddr_v4(addr)).cast::<c::sockaddr>(),
+            size_of::<SocketAddrV4>() as _,
+        ))?
+    };
+    Ok(nwritten as usize)
+}
+
+#[cfg(not(any(target_os = "redox", target_os = "wasi")))]
+pub(crate) fn sendto_v6(
+    fd: BorrowedFd<'_>,
+    buf: &[u8],
+    flags: SendFlags,
+    addr: &SocketAddrV6,
+) -> io::Result<usize> {
+    let nwritten = unsafe {
+        ret_send_recv(c::sendto(
+            borrowed_fd(fd),
+            buf.as_ptr().cast(),
+            send_recv_len(buf.len()),
+            flags.bits(),
+            as_ptr(&encode_sockaddr_v6(addr)).cast::<c::sockaddr>(),
+            size_of::<SocketAddrV6>() as _,
+        ))?
+    };
+    Ok(nwritten as usize)
+}
+
+#[cfg(not(any(windows, target_os = "redox", target_os = "wasi")))]
+pub(crate) fn sendto_unix(
+    fd: BorrowedFd<'_>,
+    buf: &[u8],
+    flags: SendFlags,
+    addr: &SocketAddrUnix,
+) -> io::Result<usize> {
+    let nwritten = unsafe {
+        ret_send_recv(c::sendto(
+            borrowed_fd(fd),
+            buf.as_ptr().cast(),
+            send_recv_len(buf.len()),
+            flags.bits(),
+            as_ptr(&addr.unix).cast(),
+            addr.addr_len(),
+        ))?
+    };
+    Ok(nwritten as usize)
+}
+
+#[cfg(not(any(target_os = "redox", target_os = "wasi")))]
+pub(crate) fn socket(
+    domain: AddressFamily,
+    type_: SocketType,
+    protocol: Protocol,
+) -> io::Result<OwnedFd> {
+    unsafe {
+        ret_owned_fd(c::socket(
+            domain.0 as c::c_int,
+            type_.0 as c::c_int,
+            protocol.0,
+        ))
+    }
+}
+
+#[cfg(not(any(target_os = "redox", target_os = "wasi")))]
+pub(crate) fn socket_with(
+    domain: AddressFamily,
+    type_: SocketType,
+    flags: SocketFlags,
+    protocol: Protocol,
+) -> io::Result<OwnedFd> {
+    unsafe {
+        ret_owned_fd(c::socket(
+            domain.0 as c::c_int,
+            type_.0 as c::c_int | flags.bits(),
+            protocol.0,
+        ))
+    }
+}
+
+#[cfg(not(any(target_os = "redox", target_os = "wasi")))]
+pub(crate) fn bind_v4(sockfd: BorrowedFd<'_>, addr: &SocketAddrV4) -> io::Result<()> {
+    unsafe {
+        ret(c::bind(
+            borrowed_fd(sockfd),
+            as_ptr(&encode_sockaddr_v4(addr)).cast(),
+            size_of::<c::sockaddr_in>() as c::socklen_t,
+        ))
+    }
+}
+
+#[cfg(not(any(target_os = "redox", target_os = "wasi")))]
+pub(crate) fn bind_v6(sockfd: BorrowedFd<'_>, addr: &SocketAddrV6) -> io::Result<()> {
+    unsafe {
+        ret(c::bind(
+            borrowed_fd(sockfd),
+            as_ptr(&encode_sockaddr_v6(addr)).cast(),
+            size_of::<c::sockaddr_in6>() as c::socklen_t,
+        ))
+    }
+}
+
+#[cfg(not(any(windows, target_os = "redox", target_os = "wasi")))]
+pub(crate) fn bind_unix(sockfd: BorrowedFd<'_>, addr: &SocketAddrUnix) -> io::Result<()> {
+    unsafe {
+        ret(c::bind(
+            borrowed_fd(sockfd),
+            as_ptr(&addr.unix).cast(),
+            addr.addr_len(),
+        ))
+    }
+}
+
+#[cfg(not(any(target_os = "redox", target_os = "wasi")))]
+pub(crate) fn connect_v4(sockfd: BorrowedFd<'_>, addr: &SocketAddrV4) -> io::Result<()> {
+    unsafe {
+        ret(c::connect(
+            borrowed_fd(sockfd),
+            as_ptr(&encode_sockaddr_v4(addr)).cast(),
+            size_of::<c::sockaddr_in>() as c::socklen_t,
+        ))
+    }
+}
+
+#[cfg(not(any(target_os = "redox", target_os = "wasi")))]
+pub(crate) fn connect_v6(sockfd: BorrowedFd<'_>, addr: &SocketAddrV6) -> io::Result<()> {
+    unsafe {
+        ret(c::connect(
+            borrowed_fd(sockfd),
+            as_ptr(&encode_sockaddr_v6(addr)).cast(),
+            size_of::<c::sockaddr_in6>() as c::socklen_t,
+        ))
+    }
+}
+
+#[cfg(not(any(windows, target_os = "redox", target_os = "wasi")))]
+pub(crate) fn connect_unix(sockfd: BorrowedFd<'_>, addr: &SocketAddrUnix) -> io::Result<()> {
+    unsafe {
+        ret(c::connect(
+            borrowed_fd(sockfd),
+            as_ptr(&addr.unix).cast(),
+            addr.addr_len(),
+        ))
+    }
+}
+
+#[cfg(not(any(target_os = "redox", target_os = "wasi")))]
+pub(crate) fn listen(sockfd: BorrowedFd<'_>, backlog: c::c_int) -> io::Result<()> {
+    unsafe { ret(c::listen(borrowed_fd(sockfd), backlog)) }
+}
+
+#[cfg(not(any(target_os = "redox", target_os = "wasi")))]
+pub(crate) fn accept(sockfd: BorrowedFd<'_>) -> io::Result<OwnedFd> {
+    unsafe {
+        let owned_fd = ret_owned_fd(c::accept(borrowed_fd(sockfd), null_mut(), null_mut()))?;
+        Ok(owned_fd)
+    }
+}
+
+#[cfg(not(any(
+    windows,
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "redox",
+    target_os = "wasi",
+)))]
+pub(crate) fn accept_with(sockfd: BorrowedFd<'_>, flags: AcceptFlags) -> io::Result<OwnedFd> {
+    unsafe {
+        let owned_fd = ret_owned_fd(c::accept4(
+            borrowed_fd(sockfd),
+            null_mut(),
+            null_mut(),
+            flags.bits(),
+        ))?;
+        Ok(owned_fd)
+    }
+}
+
+#[cfg(not(any(target_os = "redox", target_os = "wasi")))]
+pub(crate) fn acceptfrom(sockfd: BorrowedFd<'_>) -> io::Result<(OwnedFd, Option<SocketAddrAny>)> {
+    unsafe {
+        let mut storage = MaybeUninit::<c::sockaddr_storage>::uninit();
+        let mut len = size_of::<c::sockaddr_storage>() as c::socklen_t;
+        let owned_fd = ret_owned_fd(c::accept(
+            borrowed_fd(sockfd),
+            storage.as_mut_ptr().cast(),
+            &mut len,
+        ))?;
+        Ok((
+            owned_fd,
+            maybe_read_sockaddr_os(storage.as_ptr(), len.try_into().unwrap()),
+        ))
+    }
+}
+
+#[cfg(not(any(
+    windows,
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "redox",
+    target_os = "wasi",
+)))]
+pub(crate) fn acceptfrom_with(
+    sockfd: BorrowedFd<'_>,
+    flags: AcceptFlags,
+) -> io::Result<(OwnedFd, Option<SocketAddrAny>)> {
+    unsafe {
+        let mut storage = MaybeUninit::<c::sockaddr_storage>::uninit();
+        let mut len = size_of::<c::sockaddr_storage>() as c::socklen_t;
+        let owned_fd = ret_owned_fd(c::accept4(
+            borrowed_fd(sockfd),
+            storage.as_mut_ptr().cast(),
+            &mut len,
+            flags.bits(),
+        ))?;
+        Ok((
+            owned_fd,
+            maybe_read_sockaddr_os(storage.as_ptr(), len.try_into().unwrap()),
+        ))
+    }
+}
+
+/// Darwin lacks `accept4`, but does have `accept`. We define
+/// `AcceptFlags` to have no flags, so we can discard it here.
+#[cfg(any(windows, target_os = "ios", target_os = "macos"))]
+pub(crate) fn accept_with(sockfd: BorrowedFd<'_>, _flags: AcceptFlags) -> io::Result<OwnedFd> {
+    accept(sockfd)
+}
+
+/// Darwin lacks `accept4`, but does have `accept`. We define
+/// `AcceptFlags` to have no flags, so we can discard it here.
+#[cfg(any(windows, target_os = "ios", target_os = "macos"))]
+pub(crate) fn acceptfrom_with(
+    sockfd: BorrowedFd<'_>,
+    _flags: AcceptFlags,
+) -> io::Result<(OwnedFd, Option<SocketAddrAny>)> {
+    acceptfrom(sockfd)
+}
+
+#[cfg(not(any(target_os = "redox", target_os = "wasi")))]
+pub(crate) fn shutdown(sockfd: BorrowedFd<'_>, how: Shutdown) -> io::Result<()> {
+    unsafe { ret(c::shutdown(borrowed_fd(sockfd), how as c::c_int)) }
+}
+
+#[cfg(not(any(target_os = "redox", target_os = "wasi")))]
+pub(crate) fn getsockname(sockfd: BorrowedFd<'_>) -> io::Result<SocketAddrAny> {
+    unsafe {
+        let mut storage = MaybeUninit::<c::sockaddr_storage>::uninit();
+        let mut len = size_of::<c::sockaddr_storage>() as c::socklen_t;
+        ret(c::getsockname(
+            borrowed_fd(sockfd),
+            storage.as_mut_ptr().cast(),
+            &mut len,
+        ))?;
+        Ok(read_sockaddr_os(storage.as_ptr(), len.try_into().unwrap()))
+    }
+}
+
+#[cfg(not(any(target_os = "redox", target_os = "wasi")))]
+pub(crate) fn getpeername(sockfd: BorrowedFd<'_>) -> io::Result<Option<SocketAddrAny>> {
+    unsafe {
+        let mut storage = MaybeUninit::<c::sockaddr_storage>::uninit();
+        let mut len = size_of::<c::sockaddr_storage>() as c::socklen_t;
+        ret(c::getpeername(
+            borrowed_fd(sockfd),
+            storage.as_mut_ptr().cast(),
+            &mut len,
+        ))?;
+        Ok(maybe_read_sockaddr_os(
+            storage.as_ptr(),
+            len.try_into().unwrap(),
+        ))
+    }
+}
+
+#[cfg(not(any(windows, target_os = "redox", target_os = "wasi")))]
+pub(crate) fn socketpair(
+    domain: AddressFamily,
+    type_: SocketType,
+    flags: SocketFlags,
+    protocol: Protocol,
+) -> io::Result<(OwnedFd, OwnedFd)> {
+    unsafe {
+        let mut fds = MaybeUninit::<[OwnedFd; 2]>::uninit();
+        ret(c::socketpair(
+            c::c_int::from(domain.0),
+            type_.0 as c::c_int | flags.bits(),
+            protocol.0,
+            fds.as_mut_ptr().cast::<c::c_int>(),
+        ))?;
+
+        let [fd0, fd1] = fds.assume_init();
+        Ok((fd0, fd1))
+    }
+}
+
+#[cfg(not(any(target_os = "redox", target_os = "wasi")))]
+pub(crate) mod sockopt {
+    use super::{c, in6_addr_new, in_addr_new, BorrowedFd};
+    use crate::io;
+    use crate::net::sockopt::Timeout;
+    use crate::net::{Ipv4Addr, Ipv6Addr, SocketType};
+    use crate::utils::as_mut_ptr;
+    use core::convert::TryInto;
+    use core::time::Duration;
+    #[cfg(windows)]
+    use windows_sys::Win32::Foundation::BOOL;
+
+    // TODO: With Rust 1.53 we can use `Duration::ZERO` instead.
+    const DURATION_ZERO: Duration = Duration::from_secs(0);
+
+    #[inline]
+    fn getsockopt<T: Copy>(fd: BorrowedFd<'_>, level: i32, optname: i32) -> io::Result<T> {
+        use super::*;
+
+        let mut optlen = core::mem::size_of::<T>().try_into().unwrap();
+        debug_assert!(
+            optlen as usize >= core::mem::size_of::<c::c_int>(),
+            "Socket APIs don't ever use `bool` directly"
+        );
+
+        unsafe {
+            let mut value = core::mem::zeroed::<T>();
+            ret(c::getsockopt(
+                borrowed_fd(fd),
+                level,
+                optname,
+                as_mut_ptr(&mut value).cast(),
+                &mut optlen,
+            ))?;
+            // On Windows at least, `getsockopt` has been observed writing 1
+            // byte on at least (`IPPROTO_TCP`, `TCP_NODELAY`), even though
+            // Windows' documentation says that should write a 4-byte `BOOL`.
+            // So, we initialize the memory to zeros above, and just assert
+            // that `getsockopt` doesn't write too many bytes here.
+            assert!(
+                optlen as usize <= size_of::<T>(),
+                "unexpected getsockopt size"
+            );
+            Ok(value)
+        }
+    }
+
+    #[inline]
+    fn setsockopt<T: Copy>(
+        fd: BorrowedFd<'_>,
+        level: i32,
+        optname: i32,
+        value: T,
+    ) -> io::Result<()> {
+        use super::*;
+
+        let optlen = core::mem::size_of::<T>().try_into().unwrap();
+        debug_assert!(
+            optlen as usize >= core::mem::size_of::<c::c_int>(),
+            "Socket APIs don't ever use `bool` directly"
+        );
+
+        unsafe {
+            ret(c::setsockopt(
+                borrowed_fd(fd),
+                level,
+                optname,
+                as_ptr(&value).cast(),
+                optlen,
+            ))
+        }
+    }
+
+    #[inline]
+    pub(crate) fn get_socket_type(fd: BorrowedFd<'_>) -> io::Result<SocketType> {
+        getsockopt(fd, c::SOL_SOCKET as _, c::SO_TYPE)
+    }
+
+    #[inline]
+    pub(crate) fn set_socket_reuseaddr(fd: BorrowedFd<'_>, reuseaddr: bool) -> io::Result<()> {
+        setsockopt(
+            fd,
+            c::SOL_SOCKET as _,
+            c::SO_REUSEADDR,
+            from_bool(reuseaddr),
+        )
+    }
+
+    #[inline]
+    pub(crate) fn set_socket_broadcast(fd: BorrowedFd<'_>, broadcast: bool) -> io::Result<()> {
+        setsockopt(
+            fd,
+            c::SOL_SOCKET as _,
+            c::SO_BROADCAST,
+            from_bool(broadcast),
+        )
+    }
+
+    #[inline]
+    pub(crate) fn get_socket_broadcast(fd: BorrowedFd<'_>) -> io::Result<bool> {
+        getsockopt(fd, c::SOL_SOCKET as _, c::SO_BROADCAST).map(to_bool)
+    }
+
+    #[inline]
+    pub(crate) fn set_socket_linger(
+        fd: BorrowedFd<'_>,
+        linger: Option<Duration>,
+    ) -> io::Result<()> {
+        // Convert `linger` to seconds, rounding up.
+        let l_linger = if let Some(linger) = linger {
+            let mut l_linger = linger.as_secs();
+            if linger.subsec_nanos() != 0 {
+                l_linger = l_linger.checked_add(1).ok_or(io::Errno::INVAL)?;
+            }
+            l_linger.try_into().map_err(|_e| io::Errno::INVAL)?
+        } else {
+            0
+        };
+        let linger = c::linger {
+            l_onoff: linger.is_some() as _,
+            l_linger,
+        };
+        setsockopt(fd, c::SOL_SOCKET as _, c::SO_LINGER, linger)
+    }
+
+    #[inline]
+    pub(crate) fn get_socket_linger(fd: BorrowedFd<'_>) -> io::Result<Option<Duration>> {
+        let linger: c::linger = getsockopt(fd, c::SOL_SOCKET as _, c::SO_LINGER)?;
+        // TODO: With Rust 1.50, this could use `.then`.
+        Ok(if linger.l_onoff != 0 {
+            Some(Duration::from_secs(linger.l_linger as u64))
+        } else {
+            None
+        })
+    }
+
+    #[cfg(any(target_os = "android", target_os = "linux"))]
+    #[inline]
+    pub(crate) fn set_socket_passcred(fd: BorrowedFd<'_>, passcred: bool) -> io::Result<()> {
+        setsockopt(fd, c::SOL_SOCKET as _, c::SO_PASSCRED, from_bool(passcred))
+    }
+
+    #[cfg(any(target_os = "android", target_os = "linux"))]
+    #[inline]
+    pub(crate) fn get_socket_passcred(fd: BorrowedFd<'_>) -> io::Result<bool> {
+        getsockopt(fd, c::SOL_SOCKET as _, c::SO_PASSCRED).map(to_bool)
+    }
+
+    #[inline]
+    pub(crate) fn set_socket_timeout(
+        fd: BorrowedFd<'_>,
+        id: Timeout,
+        timeout: Option<Duration>,
+    ) -> io::Result<()> {
+        let optname = match id {
+            Timeout::Recv => c::SO_RCVTIMEO,
+            Timeout::Send => c::SO_SNDTIMEO,
+        };
+
+        #[cfg(not(windows))]
+        let timeout = match timeout {
+            Some(timeout) => {
+                if timeout == DURATION_ZERO {
+                    return Err(io::Errno::INVAL);
+                }
+
+                let tv_sec = timeout.as_secs().try_into();
+                #[cfg(not(all(target_arch = "x86_64", target_pointer_width = "32")))]
+                let tv_sec = tv_sec.unwrap_or(c::c_long::MAX);
+                #[cfg(all(target_arch = "x86_64", target_pointer_width = "32"))]
+                let tv_sec = tv_sec.unwrap_or(i64::MAX);
+
+                // `subsec_micros` rounds down, so we use `subsec_nanos` and
+                // manually round up.
+                let mut timeout = c::timeval {
+                    tv_sec,
+                    tv_usec: ((timeout.subsec_nanos() + 999) / 1000) as _,
+                };
+                if timeout.tv_sec == 0 && timeout.tv_usec == 0 {
+                    timeout.tv_usec = 1;
+                }
+                timeout
+            }
+            None => c::timeval {
+                tv_sec: 0,
+                tv_usec: 0,
+            },
+        };
+
+        #[cfg(windows)]
+        let timeout: u32 = match timeout {
+            Some(timeout) => {
+                if timeout == DURATION_ZERO {
+                    return Err(io::Errno::INVAL);
+                }
+
+                // `as_millis` rounds down, so we use `as_nanos` and
+                // manually round up.
+                let mut timeout: u32 = ((timeout.as_nanos() + 999_999) / 1_000_000)
+                    .try_into()
+                    .map_err(|_convert_err| io::Errno::INVAL)?;
+                if timeout == 0 {
+                    timeout = 1;
+                }
+                timeout
+            }
+            None => 0,
+        };
+
+        setsockopt(fd, c::SOL_SOCKET, optname, timeout)
+    }
+
+    #[inline]
+    pub(crate) fn get_socket_timeout(
+        fd: BorrowedFd<'_>,
+        id: Timeout,
+    ) -> io::Result<Option<Duration>> {
+        let optname = match id {
+            Timeout::Recv => c::SO_RCVTIMEO,
+            Timeout::Send => c::SO_SNDTIMEO,
+        };
+
+        #[cfg(not(windows))]
+        {
+            let timeout: c::timeval = getsockopt(fd, c::SOL_SOCKET, optname)?;
+            if timeout.tv_sec == 0 && timeout.tv_usec == 0 {
+                Ok(None)
+            } else {
+                Ok(Some(
+                    Duration::from_secs(timeout.tv_sec as u64)
+                        + Duration::from_micros(timeout.tv_usec as u64),
+                ))
+            }
+        }
+
+        #[cfg(windows)]
+        {
+            let timeout: u32 = getsockopt(fd, c::SOL_SOCKET, optname)?;
+            if timeout == 0 {
+                Ok(None)
+            } else {
+                Ok(Some(Duration::from_millis(timeout as u64)))
+            }
+        }
+    }
+
+    #[inline]
+    pub(crate) fn set_ip_ttl(fd: BorrowedFd<'_>, ttl: u32) -> io::Result<()> {
+        setsockopt(fd, c::IPPROTO_IP as _, c::IP_TTL, ttl)
+    }
+
+    #[inline]
+    pub(crate) fn get_ip_ttl(fd: BorrowedFd<'_>) -> io::Result<u32> {
+        getsockopt(fd, c::IPPROTO_IP as _, c::IP_TTL)
+    }
+
+    #[inline]
+    pub(crate) fn set_ipv6_v6only(fd: BorrowedFd<'_>, only_v6: bool) -> io::Result<()> {
+        setsockopt(fd, c::IPPROTO_IPV6 as _, c::IPV6_V6ONLY, from_bool(only_v6))
+    }
+
+    #[inline]
+    pub(crate) fn get_ipv6_v6only(fd: BorrowedFd<'_>) -> io::Result<bool> {
+        getsockopt(fd, c::IPPROTO_IPV6 as _, c::IPV6_V6ONLY).map(to_bool)
+    }
+
+    #[inline]
+    pub(crate) fn set_ip_multicast_loop(
+        fd: BorrowedFd<'_>,
+        multicast_loop: bool,
+    ) -> io::Result<()> {
+        setsockopt(
+            fd,
+            c::IPPROTO_IP as _,
+            c::IP_MULTICAST_LOOP,
+            from_bool(multicast_loop),
+        )
+    }
+
+    #[inline]
+    pub(crate) fn get_ip_multicast_loop(fd: BorrowedFd<'_>) -> io::Result<bool> {
+        getsockopt(fd, c::IPPROTO_IP as _, c::IP_MULTICAST_LOOP).map(to_bool)
+    }
+
+    #[inline]
+    pub(crate) fn set_ip_multicast_ttl(fd: BorrowedFd<'_>, multicast_ttl: u32) -> io::Result<()> {
+        setsockopt(fd, c::IPPROTO_IP as _, c::IP_MULTICAST_TTL, multicast_ttl)
+    }
+
+    #[inline]
+    pub(crate) fn get_ip_multicast_ttl(fd: BorrowedFd<'_>) -> io::Result<u32> {
+        getsockopt(fd, c::IPPROTO_IP as _, c::IP_MULTICAST_TTL)
+    }
+
+    #[inline]
+    pub(crate) fn set_ipv6_multicast_loop(
+        fd: BorrowedFd<'_>,
+        multicast_loop: bool,
+    ) -> io::Result<()> {
+        setsockopt(
+            fd,
+            c::IPPROTO_IPV6 as _,
+            c::IPV6_MULTICAST_LOOP,
+            from_bool(multicast_loop),
+        )
+    }
+
+    #[inline]
+    pub(crate) fn get_ipv6_multicast_loop(fd: BorrowedFd<'_>) -> io::Result<bool> {
+        getsockopt(fd, c::IPPROTO_IPV6 as _, c::IPV6_MULTICAST_LOOP).map(to_bool)
+    }
+
+    #[inline]
+    pub(crate) fn set_ip_add_membership(
+        fd: BorrowedFd<'_>,
+        multiaddr: &Ipv4Addr,
+        interface: &Ipv4Addr,
+    ) -> io::Result<()> {
+        let mreq = to_imr(multiaddr, interface);
+        setsockopt(fd, c::IPPROTO_IP as _, c::IP_ADD_MEMBERSHIP, mreq)
+    }
+
+    #[inline]
+    pub(crate) fn set_ipv6_add_membership(
+        fd: BorrowedFd<'_>,
+        multiaddr: &Ipv6Addr,
+        interface: u32,
+    ) -> io::Result<()> {
+        #[cfg(not(any(
+            target_os = "dragonfly",
+            target_os = "freebsd",
+            target_os = "haiku",
+            target_os = "illumos",
+            target_os = "ios",
+            target_os = "l4re",
+            target_os = "macos",
+            target_os = "netbsd",
+            target_os = "openbsd",
+            target_os = "solaris",
+        )))]
+        use c::IPV6_ADD_MEMBERSHIP;
+        #[cfg(any(
+            target_os = "dragonfly",
+            target_os = "freebsd",
+            target_os = "haiku",
+            target_os = "illumos",
+            target_os = "ios",
+            target_os = "l4re",
+            target_os = "macos",
+            target_os = "netbsd",
+            target_os = "openbsd",
+            target_os = "solaris",
+        ))]
+        use c::IPV6_JOIN_GROUP as IPV6_ADD_MEMBERSHIP;
+
+        let mreq = to_ipv6mr(multiaddr, interface);
+        setsockopt(fd, c::IPPROTO_IPV6 as _, IPV6_ADD_MEMBERSHIP, mreq)
+    }
+
+    #[inline]
+    pub(crate) fn set_ip_drop_membership(
+        fd: BorrowedFd<'_>,
+        multiaddr: &Ipv4Addr,
+        interface: &Ipv4Addr,
+    ) -> io::Result<()> {
+        let mreq = to_imr(multiaddr, interface);
+        setsockopt(fd, c::IPPROTO_IP as _, c::IP_DROP_MEMBERSHIP, mreq)
+    }
+
+    #[inline]
+    pub(crate) fn set_ipv6_drop_membership(
+        fd: BorrowedFd<'_>,
+        multiaddr: &Ipv6Addr,
+        interface: u32,
+    ) -> io::Result<()> {
+        #[cfg(not(any(
+            target_os = "dragonfly",
+            target_os = "freebsd",
+            target_os = "haiku",
+            target_os = "illumos",
+            target_os = "ios",
+            target_os = "l4re",
+            target_os = "macos",
+            target_os = "netbsd",
+            target_os = "openbsd",
+            target_os = "solaris",
+        )))]
+        use c::IPV6_DROP_MEMBERSHIP;
+        #[cfg(any(
+            target_os = "dragonfly",
+            target_os = "freebsd",
+            target_os = "haiku",
+            target_os = "illumos",
+            target_os = "ios",
+            target_os = "l4re",
+            target_os = "macos",
+            target_os = "netbsd",
+            target_os = "openbsd",
+            target_os = "solaris",
+        ))]
+        use c::IPV6_LEAVE_GROUP as IPV6_DROP_MEMBERSHIP;
+
+        let mreq = to_ipv6mr(multiaddr, interface);
+        setsockopt(fd, c::IPPROTO_IPV6 as _, IPV6_DROP_MEMBERSHIP, mreq)
+    }
+
+    #[inline]
+    pub(crate) fn set_tcp_nodelay(fd: BorrowedFd<'_>, nodelay: bool) -> io::Result<()> {
+        setsockopt(fd, c::IPPROTO_TCP as _, c::TCP_NODELAY, from_bool(nodelay))
+    }
+
+    #[inline]
+    pub(crate) fn get_tcp_nodelay(fd: BorrowedFd<'_>) -> io::Result<bool> {
+        getsockopt(fd, c::IPPROTO_TCP as _, c::TCP_NODELAY).map(to_bool)
+    }
+
+    #[inline]
+    fn to_imr(multiaddr: &Ipv4Addr, interface: &Ipv4Addr) -> c::ip_mreq {
+        c::ip_mreq {
+            imr_multiaddr: to_imr_addr(multiaddr),
+            imr_interface: to_imr_addr(interface),
+        }
+    }
+
+    #[inline]
+    fn to_imr_addr(addr: &Ipv4Addr) -> c::in_addr {
+        in_addr_new(u32::from_ne_bytes(addr.octets()))
+    }
+
+    #[inline]
+    fn to_ipv6mr(multiaddr: &Ipv6Addr, interface: u32) -> c::ipv6_mreq {
+        c::ipv6_mreq {
+            ipv6mr_multiaddr: to_ipv6mr_multiaddr(multiaddr),
+            ipv6mr_interface: to_ipv6mr_interface(interface),
+        }
+    }
+
+    #[inline]
+    fn to_ipv6mr_multiaddr(multiaddr: &Ipv6Addr) -> c::in6_addr {
+        in6_addr_new(multiaddr.octets())
+    }
+
+    #[cfg(target_os = "android")]
+    #[inline]
+    fn to_ipv6mr_interface(interface: u32) -> c::c_int {
+        interface as c::c_int
+    }
+
+    #[cfg(not(target_os = "android"))]
+    #[inline]
+    fn to_ipv6mr_interface(interface: u32) -> c::c_uint {
+        interface as c::c_uint
+    }
+
+    // `getsockopt` and `setsockopt` represent boolean values as integers.
+    #[cfg(not(windows))]
+    type RawSocketBool = c::c_int;
+    #[cfg(windows)]
+    type RawSocketBool = BOOL;
+
+    // Wrap `RawSocketBool` in a newtype to discourage misuse.
+    #[repr(transparent)]
+    #[derive(Copy, Clone)]
+    struct SocketBool(RawSocketBool);
+
+    // Convert from a `bool` to a `SocketBool`.
+    #[inline]
+    fn from_bool(value: bool) -> SocketBool {
+        SocketBool(value as _)
+    }
+
+    // Convert from a `SocketBool` to a `bool`.
+    #[inline]
+    fn to_bool(value: SocketBool) -> bool {
+        value.0 != 0
+    }
+}
diff --git a/vendor/rustix/src/imp/libc/net/types.rs b/vendor/rustix/src/imp/libc/net/types.rs
new file mode 100644
index 000000000..63e3a317e
--- /dev/null
+++ b/vendor/rustix/src/imp/libc/net/types.rs
@@ -0,0 +1,621 @@
+use super::super::c;
+use bitflags::bitflags;
+
+/// A type for holding raw integer socket types.
+#[doc(hidden)]
+pub type RawSocketType = u32;
+
+/// `SOCK_*` constants for use with [`socket`].
+///
+/// [`socket`]: crate::net::socket
+#[derive(Debug, Clone, Copy, Eq, PartialEq, Hash)]
+#[repr(transparent)]
+pub struct SocketType(pub(crate) RawSocketType);
+
+#[rustfmt::skip]
+impl SocketType {
+    /// `SOCK_STREAM`
+    pub const STREAM: Self = Self(c::SOCK_STREAM as u32);
+
+    /// `SOCK_DGRAM`
+    pub const DGRAM: Self = Self(c::SOCK_DGRAM as u32);
+
+    /// `SOCK_SEQPACKET`
+    pub const SEQPACKET: Self = Self(c::SOCK_SEQPACKET as u32);
+
+    /// `SOCK_RAW`
+    pub const RAW: Self = Self(c::SOCK_RAW as u32);
+
+    /// `SOCK_RDM`
+    pub const RDM: Self = Self(c::SOCK_RDM as u32);
+
+    /// Constructs a `SocketType` from a raw integer.
+    #[inline]
+    pub const fn from_raw(raw: RawSocketType) -> Self {
+        Self(raw)
+    }
+
+    /// Returns the raw integer for this `SocketType`.
+    #[inline]
+    pub const fn as_raw(self) -> RawSocketType {
+        self.0
+    }
+}
+
+/// A type for holding raw integer address families.
+#[doc(hidden)]
+pub type RawAddressFamily = c::sa_family_t;
+
+/// `AF_*` constants.
+#[derive(Debug, Clone, Copy, Eq, PartialEq, Hash)]
+#[repr(transparent)]
+pub struct AddressFamily(pub(crate) RawAddressFamily);
+
+#[rustfmt::skip]
+impl AddressFamily {
+    /// `AF_UNSPEC`
+    pub const UNSPEC: Self = Self(c::AF_UNSPEC as _);
+    /// `AF_INET`
+    pub const INET: Self = Self(c::AF_INET as _);
+    /// `AF_INET6`
+    pub const INET6: Self = Self(c::AF_INET6 as _);
+    /// `AF_NETLINK`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "illumos",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    )))]
+    pub const NETLINK: Self = Self(c::AF_NETLINK as _);
+    /// `AF_UNIX`, aka `AF_LOCAL`
+    #[doc(alias = "LOCAL")]
+    pub const UNIX: Self = Self(c::AF_UNIX as _);
+    /// `AF_AX25`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "illumos",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    )))]
+    pub const AX25: Self = Self(c::AF_AX25 as _);
+    /// `AF_IPX`
+    pub const IPX: Self = Self(c::AF_IPX as _);
+    /// `AF_APPLETALK`
+    pub const APPLETALK: Self = Self(c::AF_APPLETALK as _);
+    /// `AF_NETROM`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "illumos",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    )))]
+    pub const NETROM: Self = Self(c::AF_NETROM as _);
+    /// `AF_BRIDGE`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "illumos",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    )))]
+    pub const BRIDGE: Self = Self(c::AF_BRIDGE as _);
+    /// `AF_ATMPVC`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "illumos",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    )))]
+    pub const ATMPVC: Self = Self(c::AF_ATMPVC as _);
+    /// `AF_X25`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    )))]
+    pub const X25: Self = Self(c::AF_X25 as _);
+    /// `AF_ROSE`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "illumos",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    )))]
+    pub const ROSE: Self = Self(c::AF_ROSE as _);
+    /// `AF_DECnet`
+    #[allow(non_upper_case_globals)]
+    pub const DECnet: Self = Self(c::AF_DECnet as _);
+    /// `AF_NETBEUI`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "illumos",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    )))]
+    pub const NETBEUI: Self = Self(c::AF_NETBEUI as _);
+    /// `AF_SECURITY`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "illumos",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    )))]
+    pub const SECURITY: Self = Self(c::AF_SECURITY as _);
+    /// `AF_KEY`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    )))]
+    pub const KEY: Self = Self(c::AF_KEY as _);
+    /// `AF_PACKET`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    )))]
+    pub const PACKET: Self = Self(c::AF_PACKET as _);
+    /// `AF_ASH`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "illumos",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    )))]
+    pub const ASH: Self = Self(c::AF_ASH as _);
+    /// `AF_ECONET`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "illumos",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    )))]
+    pub const ECONET: Self = Self(c::AF_ECONET as _);
+    /// `AF_ATMSVC`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "illumos",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    )))]
+    pub const ATMSVC: Self = Self(c::AF_ATMSVC as _);
+    /// `AF_RDS`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "illumos",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    )))]
+    pub const RDS: Self = Self(c::AF_RDS as _);
+    /// `AF_SNA`
+    pub const SNA: Self = Self(c::AF_SNA as _);
+    /// `AF_IRDA`
+    #[cfg(not(any(
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "illumos",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    )))]
+    pub const IRDA: Self = Self(c::AF_IRDA as _);
+    /// `AF_PPPOX`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "illumos",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    )))]
+    pub const PPPOX: Self = Self(c::AF_PPPOX as _);
+    /// `AF_WANPIPE`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "illumos",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    )))]
+    pub const WANPIPE: Self = Self(c::AF_WANPIPE as _);
+    /// `AF_LLC`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "illumos",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    )))]
+    pub const LLC: Self = Self(c::AF_LLC as _);
+    /// `AF_CAN`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "illumos",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    )))]
+    pub const CAN: Self = Self(c::AF_CAN as _);
+    /// `AF_TIPC`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "illumos",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    )))]
+    pub const TIPC: Self = Self(c::AF_TIPC as _);
+    /// `AF_BLUETOOTH`
+    #[cfg(not(any(windows, target_os = "illumos", target_os = "ios", target_os = "macos")))]
+    pub const BLUETOOTH: Self = Self(c::AF_BLUETOOTH as _);
+    /// `AF_IUCV`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "illumos",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    )))]
+    pub const IUCV: Self = Self(c::AF_IUCV as _);
+    /// `AF_RXRPC`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "illumos",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    )))]
+    pub const RXRPC: Self = Self(c::AF_RXRPC as _);
+    /// `AF_ISDN`
+    #[cfg(not(any(windows, target_os = "illumos")))]
+    pub const ISDN: Self = Self(c::AF_ISDN as _);
+    /// `AF_PHONET`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "illumos",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    )))]
+    pub const PHONET: Self = Self(c::AF_PHONET as _);
+    /// `AF_IEEE802154`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "illumos",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    )))]
+    pub const IEEE802154: Self = Self(c::AF_IEEE802154 as _);
+
+    /// Constructs a `AddressFamily` from a raw integer.
+    #[inline]
+    pub const fn from_raw(raw: RawAddressFamily) -> Self {
+        Self(raw)
+    }
+
+    /// Returns the raw integer for this `AddressFamily`.
+    #[inline]
+    pub const fn as_raw(self) -> RawAddressFamily {
+        self.0
+    }
+}
+
+/// A type for holding raw integer protocols.
+#[doc(hidden)]
+pub type RawProtocol = i32;
+
+/// `IPPROTO_*`
+#[derive(Debug, Clone, Copy, Eq, PartialEq, Hash)]
+#[repr(transparent)]
+pub struct Protocol(pub(crate) RawProtocol);
+
+#[rustfmt::skip]
+impl Protocol {
+    /// `IPPROTO_IP`
+    pub const IP: Self = Self(c::IPPROTO_IP as _);
+    /// `IPPROTO_ICMP`
+    pub const ICMP: Self = Self(c::IPPROTO_ICMP as _);
+    /// `IPPROTO_IGMP`
+    #[cfg(not(target_os = "illumos"))]
+    pub const IGMP: Self = Self(c::IPPROTO_IGMP as _);
+    /// `IPPROTO_IPIP`
+    #[cfg(not(any(windows, target_os = "illumos")))]
+    pub const IPIP: Self = Self(c::IPPROTO_IPIP as _);
+    /// `IPPROTO_TCP`
+    pub const TCP: Self = Self(c::IPPROTO_TCP as _);
+    /// `IPPROTO_EGP`
+    #[cfg(not(target_os = "illumos"))]
+    pub const EGP: Self = Self(c::IPPROTO_EGP as _);
+    /// `IPPROTO_PUP`
+    #[cfg(not(target_os = "illumos"))]
+    pub const PUP: Self = Self(c::IPPROTO_PUP as _);
+    /// `IPPROTO_UDP`
+    pub const UDP: Self = Self(c::IPPROTO_UDP as _);
+    /// `IPPROTO_IDP`
+    #[cfg(not(target_os = "illumos"))]
+    pub const IDP: Self = Self(c::IPPROTO_IDP as _);
+    /// `IPPROTO_TP`
+    #[cfg(not(any(windows, target_os = "illumos")))]
+    pub const TP: Self = Self(c::IPPROTO_TP as _);
+    /// `IPPROTO_DCCP`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "illumos",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "openbsd",
+    )))]
+    pub const DCCP: Self = Self(c::IPPROTO_DCCP as _);
+    /// `IPPROTO_IPV6`
+    pub const IPV6: Self = Self(c::IPPROTO_IPV6 as _);
+    /// `IPPROTO_RSVP`
+    #[cfg(not(any(windows, target_os = "illumos")))]
+    pub const RSVP: Self = Self(c::IPPROTO_RSVP as _);
+    /// `IPPROTO_GRE`
+    #[cfg(not(any(windows, target_os = "illumos")))]
+    pub const GRE: Self = Self(c::IPPROTO_GRE as _);
+    /// `IPPROTO_ESP`
+    #[cfg(not(target_os = "illumos"))]
+    pub const ESP: Self = Self(c::IPPROTO_ESP as _);
+    /// `IPPROTO_AH`
+    #[cfg(not(target_os = "illumos"))]
+    pub const AH: Self = Self(c::IPPROTO_AH as _);
+    /// `IPPROTO_MTP`
+    #[cfg(not(any(
+        windows,
+        target_os = "illumos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    )))]
+    pub const MTP: Self = Self(c::IPPROTO_MTP as _);
+    /// `IPPROTO_BEETPH`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "illumos",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    )))]
+    pub const BEETPH: Self = Self(c::IPPROTO_BEETPH as _);
+    /// `IPPROTO_ENCAP`
+    #[cfg(not(any(windows, target_os = "illumos")))]
+    pub const ENCAP: Self = Self(c::IPPROTO_ENCAP as _);
+    /// `IPPROTO_PIM`
+    #[cfg(not(target_os = "illumos"))]
+    pub const PIM: Self = Self(c::IPPROTO_PIM as _);
+    /// `IPPROTO_COMP`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "illumos",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    )))]
+    pub const COMP: Self = Self(c::IPPROTO_COMP as _);
+    /// `IPPROTO_SCTP`
+    #[cfg(not(any(target_os = "dragonfly", target_os = "illumos", target_os = "openbsd")))]
+    pub const SCTP: Self = Self(c::IPPROTO_SCTP as _);
+    /// `IPPROTO_UDPLITE`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "illumos",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    )))]
+    pub const UDPLITE: Self = Self(c::IPPROTO_UDPLITE as _);
+    /// `IPPROTO_MPLS`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "illumos",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+    )))]
+    pub const MPLS: Self = Self(c::IPPROTO_MPLS as _);
+    /// `IPPROTO_RAW`
+    pub const RAW: Self = Self(c::IPPROTO_RAW as _);
+    /// `IPPROTO_MPTCP`
+    #[cfg(not(any(
+        windows,
+        target_os = "android",
+        target_os = "dragonfly",
+        target_os = "emscripten",
+        target_os = "freebsd",
+        target_os = "fuchsia",
+        target_os = "illumos",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    )))]
+    pub const MPTCP: Self = Self(c::IPPROTO_MPTCP as _);
+    /// `IPPROTO_FRAGMENT`
+    #[cfg(not(target_os = "illumos"))]
+    pub const FRAGMENT: Self = Self(c::IPPROTO_FRAGMENT as _);
+    /// `IPPROTO_ICMPV6`
+    pub const ICMPV6: Self = Self(c::IPPROTO_ICMPV6 as _);
+    /// `IPPROTO_MH`
+    #[cfg(not(any(
+        windows,
+        target_os = "dragonfly",
+        target_os = "illumos",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    )))]
+    pub const MH: Self = Self(c::IPPROTO_MH as _);
+    /// `IPPROTO_ROUTING`
+    #[cfg(not(target_os = "illumos"))]
+    pub const ROUTING: Self = Self(c::IPPROTO_ROUTING as _);
+
+    /// Constructs a `Protocol` from a raw integer.
+    #[inline]
+    pub const fn from_raw(raw: RawProtocol) -> Self {
+        Self(raw)
+    }
+
+    /// Returns the raw integer for this `Protocol`.
+    #[inline]
+    pub const fn as_raw(self) -> RawProtocol {
+        self.0
+    }
+}
+
+/// `SHUT_*` constants for use with [`shutdown`].
+///
+/// [`shutdown`]: crate::net::shutdown
+#[derive(Debug, Clone, Copy, Eq, PartialEq, Hash)]
+#[repr(i32)]
+pub enum Shutdown {
+    /// `SHUT_RD`—Disable further read operations.
+    Read = c::SHUT_RD,
+    /// `SHUT_WR`—Disable further write operations.
+    Write = c::SHUT_WR,
+    /// `SHUT_RDWR`—Disable further read and write operations.
+    ReadWrite = c::SHUT_RDWR,
+}
+
+bitflags! {
+    /// `SOCK_*` constants for use with [`accept_with`] and [`acceptfrom_with`].
+    ///
+    /// [`accept_with`]: crate::net::accept_with
+    /// [`acceptfrom_with`]: crate::net::acceptfrom_with
+    pub struct AcceptFlags: c::c_int {
+        /// `SOCK_NONBLOCK`
+        #[cfg(not(any(windows, target_os = "ios", target_os = "macos")))]
+        const NONBLOCK = c::SOCK_NONBLOCK;
+
+        /// `SOCK_CLOEXEC`
+        #[cfg(not(any(windows, target_os = "ios", target_os = "macos")))]
+        const CLOEXEC = c::SOCK_CLOEXEC;
+    }
+}
+
+bitflags! {
+    /// `SOCK_*` constants for use with [`socket`].
+    ///
+    /// [`socket`]: crate::net::socket
+    pub struct SocketFlags: c::c_int {
+        /// `SOCK_NONBLOCK`
+        #[cfg(not(any(windows, target_os = "ios", target_os = "macos")))]
+        const NONBLOCK = c::SOCK_NONBLOCK;
+
+        /// `SOCK_CLOEXEC`
+        #[cfg(not(any(windows, target_os = "ios", target_os = "macos")))]
+        const CLOEXEC = c::SOCK_CLOEXEC;
+    }
+}
+
+/// Timeout identifier for use with [`set_socket_timeout`] and
+/// [`get_socket_timeout`].
+///
+/// [`set_socket_timeout`]: crate::net::sockopt::set_socket_timeout.
+/// [`get_socket_timeout`]: crate::net::sockopt::get_socket_timeout.
+#[derive(Debug, Clone, Copy, Eq, PartialEq, Hash)]
+#[repr(i32)]
+pub enum Timeout {
+    /// `SO_RCVTIMEO`—Timeout for receiving.
+    Recv = c::SO_RCVTIMEO,
+
+    /// `SO_SNDTIMEO`—Timeout for sending.
+    Send = c::SO_SNDTIMEO,
+}
diff --git a/vendor/rustix/src/imp/libc/net/write_sockaddr.rs b/vendor/rustix/src/imp/libc/net/write_sockaddr.rs
new file mode 100644
index 000000000..adbf7255d
--- /dev/null
+++ b/vendor/rustix/src/imp/libc/net/write_sockaddr.rs
@@ -0,0 +1,96 @@
+//! The BSD sockets API requires us to read the `ss_family` field before
+//! we can interpret the rest of a `sockaddr` produced by the kernel.
+
+use super::super::c;
+use super::addr::SocketAddrStorage;
+#[cfg(unix)]
+use super::addr::SocketAddrUnix;
+use super::ext::{in6_addr_new, in_addr_new, sockaddr_in6_new};
+use crate::net::{SocketAddrAny, SocketAddrV4, SocketAddrV6};
+use core::mem::size_of;
+
+pub(crate) unsafe fn write_sockaddr(
+    addr: &SocketAddrAny,
+    storage: *mut SocketAddrStorage,
+) -> usize {
+    match addr {
+        SocketAddrAny::V4(v4) => write_sockaddr_v4(v4, storage),
+        SocketAddrAny::V6(v6) => write_sockaddr_v6(v6, storage),
+        #[cfg(unix)]
+        SocketAddrAny::Unix(unix) => write_sockaddr_unix(unix, storage),
+    }
+}
+
+pub(crate) unsafe fn encode_sockaddr_v4(v4: &SocketAddrV4) -> c::sockaddr_in {
+    c::sockaddr_in {
+        #[cfg(any(
+            target_os = "dragonfly",
+            target_os = "freebsd",
+            target_os = "ios",
+            target_os = "macos",
+            target_os = "netbsd",
+            target_os = "openbsd",
+        ))]
+        sin_len: size_of::<c::sockaddr_in>() as _,
+        sin_family: c::AF_INET as _,
+        sin_port: u16::to_be(v4.port()),
+        sin_addr: in_addr_new(u32::from_ne_bytes(v4.ip().octets())),
+        sin_zero: [0; 8_usize],
+    }
+}
+
+unsafe fn write_sockaddr_v4(v4: &SocketAddrV4, storage: *mut SocketAddrStorage) -> usize {
+    let encoded = encode_sockaddr_v4(v4);
+    core::ptr::write(storage.cast(), encoded);
+    size_of::<c::sockaddr_in>()
+}
+
+pub(crate) unsafe fn encode_sockaddr_v6(v6: &SocketAddrV6) -> c::sockaddr_in6 {
+    #[cfg(any(
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    ))]
+    {
+        sockaddr_in6_new(
+            size_of::<c::sockaddr_in6>() as _,
+            c::AF_INET6 as _,
+            u16::to_be(v6.port()),
+            u32::to_be(v6.flowinfo()),
+            in6_addr_new(v6.ip().octets()),
+            v6.scope_id(),
+        )
+    }
+    #[cfg(not(any(
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    )))]
+    {
+        sockaddr_in6_new(
+            c::AF_INET6 as _,
+            u16::to_be(v6.port()),
+            u32::to_be(v6.flowinfo()),
+            in6_addr_new(v6.ip().octets()),
+            v6.scope_id(),
+        )
+    }
+}
+
+unsafe fn write_sockaddr_v6(v6: &SocketAddrV6, storage: *mut SocketAddrStorage) -> usize {
+    let encoded = encode_sockaddr_v6(v6);
+    core::ptr::write(storage.cast(), encoded);
+    size_of::<c::sockaddr_in6>()
+}
+
+#[cfg(unix)]
+unsafe fn write_sockaddr_unix(unix: &SocketAddrUnix, storage: *mut SocketAddrStorage) -> usize {
+    core::ptr::write(storage.cast(), unix.unix);
+    unix.len()
+}
diff --git a/vendor/rustix/src/imp/libc/offset.rs b/vendor/rustix/src/imp/libc/offset.rs
new file mode 100644
index 000000000..3002e8bdd
--- /dev/null
+++ b/vendor/rustix/src/imp/libc/offset.rs
@@ -0,0 +1,361 @@
+//! Automatically enable “large file” support features.
+
+#[cfg(not(windows))]
+use super::c;
+
+#[cfg(not(any(
+    windows,
+    target_os = "android",
+    target_os = "linux",
+    target_os = "emscripten",
+    target_os = "l4re",
+)))]
+pub(super) use c::{
+    fstat as libc_fstat, fstatat as libc_fstatat, ftruncate as libc_ftruncate, lseek as libc_lseek,
+    off_t as libc_off_t,
+};
+
+#[cfg(any(
+    target_os = "android",
+    target_os = "linux",
+    target_os = "emscripten",
+    target_os = "l4re",
+))]
+pub(super) use c::{
+    fstat64 as libc_fstat, fstatat64 as libc_fstatat, ftruncate64 as libc_ftruncate,
+    lseek64 as libc_lseek, off64_t as libc_off_t, rlimit64 as libc_rlimit,
+};
+
+#[cfg(not(any(
+    windows,
+    target_os = "android",
+    target_os = "linux",
+    target_os = "emscripten",
+    target_os = "l4re",
+    target_os = "wasi",
+)))]
+#[cfg(any(feature = "mm", feature = "time", target_arch = "x86"))] // vdso.rs uses `madvise`
+pub(super) use c::mmap as libc_mmap;
+
+#[cfg(not(any(
+    windows,
+    target_os = "android",
+    target_os = "linux",
+    target_os = "emscripten",
+    target_os = "fuchsia",
+    target_os = "l4re",
+    target_os = "redox",
+    target_os = "wasi",
+)))]
+pub(super) use c::{rlimit as libc_rlimit, RLIM_INFINITY as LIBC_RLIM_INFINITY};
+
+#[cfg(not(any(
+    windows,
+    target_os = "android",
+    target_os = "fuchsia",
+    target_os = "emscripten",
+    target_os = "l4re",
+    target_os = "linux",
+    target_os = "wasi",
+)))]
+pub(super) use c::{getrlimit as libc_getrlimit, setrlimit as libc_setrlimit};
+
+// TODO: Add `RLIM64_INFINITY` to upstream libc.
+#[cfg(any(
+    target_os = "android",
+    target_os = "linux",
+    target_os = "emscripten",
+    target_os = "l4re",
+))]
+pub(super) const LIBC_RLIM_INFINITY: u64 = !0_u64;
+
+#[cfg(any(
+    target_os = "android",
+    target_os = "linux",
+    target_os = "emscripten",
+    target_os = "l4re",
+))]
+pub(super) use c::{getrlimit64 as libc_getrlimit, setrlimit64 as libc_setrlimit};
+
+#[cfg(any(
+    target_os = "android",
+    target_os = "linux",
+    target_os = "emscripten",
+    target_os = "l4re",
+))]
+#[cfg(any(feature = "mm", feature = "time", target_arch = "x86"))] // vdso.rs uses `madvise`
+pub(super) use c::mmap64 as libc_mmap;
+
+// `prlimit64` wasn't supported in glibc until 2.13.
+#[cfg(all(target_os = "linux", target_env = "gnu"))]
+weak_or_syscall! {
+    fn prlimit64(
+        pid: c::pid_t,
+        resource: c::__rlimit_resource_t,
+        new_limit: *const c::rlimit64,
+        old_limit: *mut c::rlimit64
+    ) via SYS_prlimit64 -> c::c_int
+}
+#[cfg(all(target_os = "linux", target_env = "musl"))]
+weak_or_syscall! {
+    fn prlimit64(
+        pid: c::pid_t,
+        resource: c::c_int,
+        new_limit: *const c::rlimit64,
+        old_limit: *mut c::rlimit64
+    ) via SYS_prlimit64 -> c::c_int
+}
+#[cfg(target_os = "android")]
+weak_or_syscall! {
+    fn prlimit64(
+        pid: c::pid_t,
+        resource: c::c_int,
+        new_limit: *const c::rlimit64,
+        old_limit: *mut c::rlimit64
+    ) via SYS_prlimit64 -> c::c_int
+}
+#[cfg(all(target_os = "linux", target_env = "gnu"))]
+pub(super) unsafe fn libc_prlimit(
+    pid: c::pid_t,
+    resource: c::__rlimit_resource_t,
+    new_limit: *const c::rlimit64,
+    old_limit: *mut c::rlimit64,
+) -> c::c_int {
+    prlimit64(pid, resource, new_limit, old_limit)
+}
+#[cfg(all(target_os = "linux", target_env = "musl"))]
+pub(super) unsafe fn libc_prlimit(
+    pid: c::pid_t,
+    resource: c::c_int,
+    new_limit: *const c::rlimit64,
+    old_limit: *mut c::rlimit64,
+) -> c::c_int {
+    prlimit64(pid, resource, new_limit, old_limit)
+}
+#[cfg(target_os = "android")]
+pub(super) unsafe fn libc_prlimit(
+    pid: c::pid_t,
+    resource: c::c_int,
+    new_limit: *const c::rlimit64,
+    old_limit: *mut c::rlimit64,
+) -> c::c_int {
+    prlimit64(pid, resource, new_limit, old_limit)
+}
+
+#[cfg(not(any(
+    windows,
+    target_os = "android",
+    target_os = "linux",
+    target_os = "emscripten",
+    target_os = "l4re",
+    target_os = "redox",
+)))]
+pub(super) use c::openat as libc_openat;
+#[cfg(any(
+    target_os = "android",
+    target_os = "linux",
+    target_os = "emscripten",
+    target_os = "l4re",
+))]
+pub(super) use c::openat64 as libc_openat;
+
+#[cfg(target_os = "fuchsia")]
+pub(super) use c::fallocate as libc_fallocate;
+#[cfg(any(target_os = "android", target_os = "linux"))]
+pub(super) use c::fallocate64 as libc_fallocate;
+#[cfg(not(any(
+    windows,
+    target_os = "android",
+    target_os = "dragonfly",
+    target_os = "emscripten",
+    target_os = "illumos",
+    target_os = "ios",
+    target_os = "linux",
+    target_os = "l4re",
+    target_os = "macos",
+    target_os = "netbsd",
+    target_os = "openbsd",
+    target_os = "redox",
+)))]
+pub(super) use c::posix_fadvise as libc_posix_fadvise;
+#[cfg(any(
+    target_os = "android",
+    target_os = "emscripten",
+    target_os = "linux",
+    target_os = "l4re",
+))]
+pub(super) use c::posix_fadvise64 as libc_posix_fadvise;
+
+#[cfg(all(not(any(
+    windows,
+    target_os = "android",
+    target_os = "linux",
+    target_os = "emscripten",
+))))]
+pub(super) use c::{pread as libc_pread, pwrite as libc_pwrite};
+#[cfg(any(target_os = "android", target_os = "linux", target_os = "emscripten"))]
+pub(super) use c::{pread64 as libc_pread, pwrite64 as libc_pwrite};
+#[cfg(any(target_os = "linux", target_os = "emscripten"))]
+pub(super) use c::{preadv64 as libc_preadv, pwritev64 as libc_pwritev};
+#[cfg(target_os = "android")]
+mod readwrite_pv64 {
+    use super::c;
+
+    // 64-bit offsets on 32-bit platforms are passed in endianness-specific
+    // lo/hi pairs. See src/imp/linux_raw/conv.rs for details.
+    #[cfg(all(target_endian = "little", target_pointer_width = "32"))]
+    fn lo(x: u64) -> usize {
+        (x >> 32) as usize
+    }
+    #[cfg(all(target_endian = "little", target_pointer_width = "32"))]
+    fn hi(x: u64) -> usize {
+        (x & 0xffff_ffff) as usize
+    }
+    #[cfg(all(target_endian = "big", target_pointer_width = "32"))]
+    fn lo(x: u64) -> usize {
+        (x & 0xffff_ffff) as usize
+    }
+    #[cfg(all(target_endian = "big", target_pointer_width = "32"))]
+    fn hi(x: u64) -> usize {
+        (x >> 32) as usize
+    }
+
+    pub(in super::super) unsafe fn preadv64(
+        fd: c::c_int,
+        iov: *const c::iovec,
+        iovcnt: c::c_int,
+        offset: c::off64_t,
+    ) -> c::ssize_t {
+        // Older Android libc lacks `preadv64`, so use the `weak!` mechanism to
+        // test for it, and call back to `c::syscall`. We don't use
+        // `weak_or_syscall` here because we need to pass the 64-bit offset
+        // specially.
+        weak! {
+            fn preadv64(c::c_int, *const c::iovec, c::c_int, c::off64_t) -> c::ssize_t
+        }
+        if let Some(fun) = preadv64.get() {
+            fun(fd, iov, iovcnt, offset)
+        } else {
+            #[cfg(target_pointer_width = "32")]
+            {
+                c::syscall(
+                    c::SYS_preadv,
+                    fd,
+                    iov,
+                    iovcnt,
+                    hi(offset as u64),
+                    lo(offset as u64),
+                ) as c::ssize_t
+            }
+            #[cfg(target_pointer_width = "64")]
+            {
+                c::syscall(c::SYS_preadv, fd, iov, iovcnt, offset) as c::ssize_t
+            }
+        }
+    }
+    pub(in super::super) unsafe fn pwritev64(
+        fd: c::c_int,
+        iov: *const c::iovec,
+        iovcnt: c::c_int,
+        offset: c::off64_t,
+    ) -> c::ssize_t {
+        // See the comments in `preadv64`.
+        weak! {
+            fn pwritev64(c::c_int, *const c::iovec, c::c_int, c::off64_t) -> c::ssize_t
+        }
+        if let Some(fun) = pwritev64.get() {
+            fun(fd, iov, iovcnt, offset)
+        } else {
+            #[cfg(target_pointer_width = "32")]
+            {
+                c::syscall(
+                    c::SYS_pwritev,
+                    fd,
+                    iov,
+                    iovcnt,
+                    hi(offset as u64),
+                    lo(offset as u64),
+                ) as c::ssize_t
+            }
+            #[cfg(target_pointer_width = "64")]
+            {
+                c::syscall(c::SYS_pwritev, fd, iov, iovcnt, offset) as c::ssize_t
+            }
+        }
+    }
+}
+#[cfg(not(any(
+    windows,
+    target_os = "android",
+    target_os = "emscripten",
+    target_os = "ios",
+    target_os = "linux",
+    target_os = "macos",
+    target_os = "redox",
+)))]
+pub(super) use c::{preadv as libc_preadv, pwritev as libc_pwritev};
+#[cfg(target_os = "android")]
+pub(super) use readwrite_pv64::{preadv64 as libc_preadv, pwritev64 as libc_pwritev};
+// macOS added preadv and pwritev in version 11.0
+#[cfg(any(target_os = "ios", target_os = "macos"))]
+mod readwrite_pv {
+    use super::c;
+
+    weakcall! {
+        pub(in super::super) fn preadv(
+            fd: c::c_int,
+            iov: *const c::iovec,
+            iovcnt: c::c_int,
+            offset: c::off_t
+        ) -> c::ssize_t
+    }
+    weakcall! {
+        pub(in super::super) fn pwritev(
+            fd: c::c_int,
+            iov: *const c::iovec,
+            iovcnt: c::c_int, offset: c::off_t
+        ) -> c::ssize_t
+    }
+}
+#[cfg(all(target_os = "linux", target_env = "gnu"))]
+pub(super) use c::{preadv64v2 as libc_preadv2, pwritev64v2 as libc_pwritev2};
+#[cfg(any(target_os = "ios", target_os = "macos"))]
+pub(super) use readwrite_pv::{preadv as libc_preadv, pwritev as libc_pwritev};
+
+#[cfg(not(any(
+    windows,
+    target_os = "android",
+    target_os = "dragonfly",
+    target_os = "fuchsia",
+    target_os = "illumos",
+    target_os = "ios",
+    target_os = "linux",
+    target_os = "l4re",
+    target_os = "macos",
+    target_os = "netbsd",
+    target_os = "openbsd",
+    target_os = "redox",
+)))]
+pub(super) use c::posix_fallocate as libc_posix_fallocate;
+#[cfg(any(target_os = "l4re"))]
+pub(super) use c::posix_fallocate64 as libc_posix_fallocate;
+#[cfg(not(any(
+    windows,
+    target_os = "android",
+    target_os = "emscripten",
+    target_os = "illumos",
+    target_os = "linux",
+    target_os = "l4re",
+    target_os = "netbsd",
+    target_os = "redox",
+    target_os = "wasi",
+)))]
+pub(super) use {c::fstatfs as libc_fstatfs, c::statfs as libc_statfs};
+
+#[cfg(any(
+    target_os = "android",
+    target_os = "linux",
+    target_os = "emscripten",
+    target_os = "l4re",
+))]
+pub(super) use {c::fstatfs64 as libc_fstatfs, c::statfs64 as libc_statfs};
diff --git a/vendor/rustix/src/imp/libc/param/auxv.rs b/vendor/rustix/src/imp/libc/param/auxv.rs
new file mode 100644
index 000000000..584329da9
--- /dev/null
+++ b/vendor/rustix/src/imp/libc/param/auxv.rs
@@ -0,0 +1,66 @@
+use super::super::c;
+#[cfg(any(
+    all(target_os = "android", target_pointer_width = "64"),
+    target_os = "linux",
+))]
+use crate::ffi::CStr;
+
+// `getauxval` wasn't supported in glibc until 2.16.
+#[cfg(any(
+    all(target_os = "android", target_pointer_width = "64"),
+    target_os = "linux",
+))]
+weak!(fn getauxval(c::c_ulong) -> *mut c::c_void);
+
+#[inline]
+pub(crate) fn page_size() -> usize {
+    unsafe { c::sysconf(c::_SC_PAGESIZE) as usize }
+}
+
+#[cfg(not(target_os = "wasi"))]
+#[inline]
+pub(crate) fn clock_ticks_per_second() -> u64 {
+    unsafe { c::sysconf(c::_SC_CLK_TCK) as u64 }
+}
+
+#[cfg(any(
+    all(target_os = "android", target_pointer_width = "64"),
+    target_os = "linux",
+))]
+#[inline]
+pub(crate) fn linux_hwcap() -> (usize, usize) {
+    if let Some(libc_getauxval) = getauxval.get() {
+        unsafe {
+            let hwcap = libc_getauxval(c::AT_HWCAP) as usize;
+            let hwcap2 = libc_getauxval(c::AT_HWCAP2) as usize;
+            (hwcap, hwcap2)
+        }
+    } else {
+        (0, 0)
+    }
+}
+
+#[cfg(any(
+    all(target_os = "android", target_pointer_width = "64"),
+    target_os = "linux",
+))]
+#[inline]
+pub(crate) fn linux_execfn() -> &'static CStr {
+    if let Some(libc_getauxval) = getauxval.get() {
+        unsafe { CStr::from_ptr(libc_getauxval(c::AT_EXECFN).cast()) }
+    } else {
+        cstr!("")
+    }
+}
+
+/// Initialize process-wide state.
+#[cfg(any(
+    target_vendor = "mustang",
+    not(any(target_env = "gnu", target_env = "musl")),
+))]
+#[inline]
+#[doc(hidden)]
+pub(crate) unsafe fn init(_envp: *mut *mut u8) {
+    // Nothing to do. This is the libc backend, and libc does the
+    // initialization for us.
+}
diff --git a/vendor/rustix/src/imp/libc/param/mod.rs b/vendor/rustix/src/imp/libc/param/mod.rs
new file mode 100644
index 000000000..2cb2fe78a
--- /dev/null
+++ b/vendor/rustix/src/imp/libc/param/mod.rs
@@ -0,0 +1 @@
+pub(crate) mod auxv;
diff --git a/vendor/rustix/src/imp/libc/process/cpu_set.rs b/vendor/rustix/src/imp/libc/process/cpu_set.rs
new file mode 100644
index 000000000..14ad8d208
--- /dev/null
+++ b/vendor/rustix/src/imp/libc/process/cpu_set.rs
@@ -0,0 +1,49 @@
+#![allow(non_snake_case)]
+
+use super::super::c;
+use super::types::{RawCpuSet, CPU_SETSIZE};
+
+#[inline]
+pub(crate) fn CPU_SET(cpu: usize, cpuset: &mut RawCpuSet) {
+    assert!(
+        cpu < CPU_SETSIZE,
+        "cpu out of bounds: the cpu max is {} but the cpu is {}",
+        CPU_SETSIZE,
+        cpu
+    );
+    unsafe { c::CPU_SET(cpu, cpuset) }
+}
+
+#[inline]
+pub(crate) fn CPU_ZERO(cpuset: &mut RawCpuSet) {
+    unsafe { c::CPU_ZERO(cpuset) }
+}
+
+#[inline]
+pub(crate) fn CPU_CLR(cpu: usize, cpuset: &mut RawCpuSet) {
+    assert!(
+        cpu < CPU_SETSIZE,
+        "cpu out of bounds: the cpu max is {} but the cpu is {}",
+        CPU_SETSIZE,
+        cpu
+    );
+    unsafe { c::CPU_CLR(cpu, cpuset) }
+}
+
+#[inline]
+pub(crate) fn CPU_ISSET(cpu: usize, cpuset: &RawCpuSet) -> bool {
+    assert!(
+        cpu < CPU_SETSIZE,
+        "cpu out of bounds: the cpu max is {} but the cpu is {}",
+        CPU_SETSIZE,
+        cpu
+    );
+    unsafe { c::CPU_ISSET(cpu, cpuset) }
+}
+
+#[cfg(any(target_os = "android", target_os = "linux"))]
+#[inline]
+pub(crate) fn CPU_COUNT(cpuset: &RawCpuSet) -> u32 {
+    use core::convert::TryInto;
+    unsafe { c::CPU_COUNT(cpuset).try_into().unwrap() }
+}
diff --git a/vendor/rustix/src/imp/libc/process/mod.rs b/vendor/rustix/src/imp/libc/process/mod.rs
new file mode 100644
index 000000000..8675c1af9
--- /dev/null
+++ b/vendor/rustix/src/imp/libc/process/mod.rs
@@ -0,0 +1,12 @@
+#[cfg(any(
+    target_os = "android",
+    target_os = "dragonfly",
+    target_os = "fuchsia",
+    target_os = "linux",
+))]
+pub(crate) mod cpu_set;
+#[cfg(not(windows))]
+pub(crate) mod syscalls;
+pub(crate) mod types;
+#[cfg(not(target_os = "wasi"))]
+pub(crate) mod wait;
diff --git a/vendor/rustix/src/imp/libc/process/syscalls.rs b/vendor/rustix/src/imp/libc/process/syscalls.rs
new file mode 100644
index 000000000..9874f617f
--- /dev/null
+++ b/vendor/rustix/src/imp/libc/process/syscalls.rs
@@ -0,0 +1,419 @@
+//! libc syscalls supporting `rustix::process`.
+
+use super::super::c;
+#[cfg(not(any(target_os = "wasi", target_os = "fuchsia")))]
+use super::super::conv::borrowed_fd;
+use super::super::conv::{c_str, ret, ret_c_int, ret_discarded_char_ptr};
+#[cfg(any(target_os = "android", target_os = "linux"))]
+use super::super::conv::{syscall_ret, syscall_ret_u32};
+#[cfg(any(
+    target_os = "android",
+    target_os = "dragonfly",
+    target_os = "fuchsia",
+    target_os = "linux",
+))]
+use super::types::RawCpuSet;
+#[cfg(not(any(target_os = "wasi", target_os = "fuchsia")))]
+use crate::fd::BorrowedFd;
+use crate::ffi::CStr;
+use crate::io;
+use core::mem::MaybeUninit;
+#[cfg(not(any(target_os = "fuchsia", target_os = "redox", target_os = "wasi")))]
+use {
+    super::super::conv::ret_infallible,
+    super::super::offset::{libc_getrlimit, libc_rlimit, libc_setrlimit, LIBC_RLIM_INFINITY},
+    crate::process::{Resource, Rlimit},
+    core::convert::TryInto,
+};
+#[cfg(any(target_os = "android", target_os = "linux"))]
+use {
+    super::super::offset::libc_prlimit,
+    crate::process::{Cpuid, MembarrierCommand, MembarrierQuery},
+};
+#[cfg(not(target_os = "wasi"))]
+use {
+    super::types::RawUname,
+    crate::process::{Gid, Pid, RawNonZeroPid, RawPid, Signal, Uid, WaitOptions, WaitStatus},
+};
+
+#[cfg(not(target_os = "wasi"))]
+pub(crate) fn chdir(path: &CStr) -> io::Result<()> {
+    unsafe { ret(c::chdir(c_str(path))) }
+}
+
+#[cfg(not(any(target_os = "wasi", target_os = "fuchsia")))]
+pub(crate) fn fchdir(dirfd: BorrowedFd<'_>) -> io::Result<()> {
+    unsafe { ret(c::fchdir(borrowed_fd(dirfd))) }
+}
+
+#[cfg(not(target_os = "wasi"))]
+pub(crate) fn getcwd(buf: &mut [u8]) -> io::Result<()> {
+    unsafe { ret_discarded_char_ptr(c::getcwd(buf.as_mut_ptr().cast(), buf.len())) }
+}
+
+#[cfg(any(target_os = "android", target_os = "linux"))]
+pub(crate) fn membarrier_query() -> MembarrierQuery {
+    // GLIBC does not have a wrapper for `membarrier`; [the documentation]
+    // says to use `syscall`.
+    //
+    // [the documentation]: https://man7.org/linux/man-pages/man2/membarrier.2.html#NOTES
+    const MEMBARRIER_CMD_QUERY: u32 = 0;
+    unsafe {
+        match syscall_ret_u32(c::syscall(c::SYS_membarrier, MEMBARRIER_CMD_QUERY, 0)) {
+            Ok(query) => MembarrierQuery::from_bits_unchecked(query),
+            Err(_) => MembarrierQuery::empty(),
+        }
+    }
+}
+
+#[cfg(any(target_os = "android", target_os = "linux"))]
+pub(crate) fn membarrier(cmd: MembarrierCommand) -> io::Result<()> {
+    unsafe { syscall_ret(c::syscall(c::SYS_membarrier, cmd as u32, 0)) }
+}
+
+#[cfg(any(target_os = "android", target_os = "linux"))]
+pub(crate) fn membarrier_cpu(cmd: MembarrierCommand, cpu: Cpuid) -> io::Result<()> {
+    const MEMBARRIER_CMD_FLAG_CPU: u32 = 1;
+    unsafe {
+        syscall_ret(c::syscall(
+            c::SYS_membarrier,
+            cmd as u32,
+            MEMBARRIER_CMD_FLAG_CPU,
+            cpu.as_raw(),
+        ))
+    }
+}
+
+#[cfg(not(target_os = "wasi"))]
+#[inline]
+#[must_use]
+pub(crate) fn getuid() -> Uid {
+    unsafe {
+        let uid = c::getuid();
+        Uid::from_raw(uid)
+    }
+}
+
+#[cfg(not(target_os = "wasi"))]
+#[inline]
+#[must_use]
+pub(crate) fn geteuid() -> Uid {
+    unsafe {
+        let uid = c::geteuid();
+        Uid::from_raw(uid)
+    }
+}
+
+#[cfg(not(target_os = "wasi"))]
+#[inline]
+#[must_use]
+pub(crate) fn getgid() -> Gid {
+    unsafe {
+        let gid = c::getgid();
+        Gid::from_raw(gid)
+    }
+}
+
+#[cfg(not(target_os = "wasi"))]
+#[inline]
+#[must_use]
+pub(crate) fn getegid() -> Gid {
+    unsafe {
+        let gid = c::getegid();
+        Gid::from_raw(gid)
+    }
+}
+
+#[cfg(not(target_os = "wasi"))]
+#[inline]
+#[must_use]
+pub(crate) fn getpid() -> Pid {
+    unsafe {
+        let pid = c::getpid();
+        debug_assert_ne!(pid, 0);
+        Pid::from_raw_nonzero(RawNonZeroPid::new_unchecked(pid))
+    }
+}
+
+#[cfg(not(target_os = "wasi"))]
+#[inline]
+#[must_use]
+pub(crate) fn getppid() -> Option<Pid> {
+    unsafe {
+        let pid: i32 = c::getppid();
+        Pid::from_raw(pid)
+    }
+}
+
+#[cfg(any(
+    target_os = "android",
+    target_os = "dragonfly",
+    target_os = "fuchsia",
+    target_os = "linux",
+))]
+#[inline]
+pub(crate) fn sched_getaffinity(pid: Option<Pid>, cpuset: &mut RawCpuSet) -> io::Result<()> {
+    unsafe {
+        ret(c::sched_getaffinity(
+            Pid::as_raw(pid) as _,
+            core::mem::size_of::<RawCpuSet>(),
+            cpuset,
+        ))
+    }
+}
+
+#[cfg(any(
+    target_os = "android",
+    target_os = "dragonfly",
+    target_os = "fuchsia",
+    target_os = "linux",
+))]
+#[inline]
+pub(crate) fn sched_setaffinity(pid: Option<Pid>, cpuset: &RawCpuSet) -> io::Result<()> {
+    unsafe {
+        ret(c::sched_setaffinity(
+            Pid::as_raw(pid) as _,
+            core::mem::size_of::<RawCpuSet>(),
+            cpuset,
+        ))
+    }
+}
+
+#[inline]
+pub(crate) fn sched_yield() {
+    unsafe {
+        let _ = c::sched_yield();
+    }
+}
+
+#[cfg(not(target_os = "wasi"))]
+#[inline]
+pub(crate) fn uname() -> RawUname {
+    let mut uname = MaybeUninit::<RawUname>::uninit();
+    unsafe {
+        ret(c::uname(uname.as_mut_ptr())).unwrap();
+        uname.assume_init()
+    }
+}
+
+#[cfg(not(any(target_os = "fuchsia", target_os = "wasi")))]
+#[inline]
+pub(crate) fn nice(inc: i32) -> io::Result<i32> {
+    libc_errno::set_errno(libc_errno::Errno(0));
+    let r = unsafe { c::nice(inc) };
+    if libc_errno::errno().0 != 0 {
+        ret_c_int(r)
+    } else {
+        Ok(r)
+    }
+}
+
+#[cfg(not(any(target_os = "fuchsia", target_os = "redox", target_os = "wasi")))]
+#[inline]
+pub(crate) fn getpriority_user(uid: Uid) -> io::Result<i32> {
+    libc_errno::set_errno(libc_errno::Errno(0));
+    let r = unsafe { c::getpriority(c::PRIO_USER, uid.as_raw() as _) };
+    if libc_errno::errno().0 != 0 {
+        ret_c_int(r)
+    } else {
+        Ok(r)
+    }
+}
+
+#[cfg(not(any(target_os = "fuchsia", target_os = "redox", target_os = "wasi")))]
+#[inline]
+pub(crate) fn getpriority_pgrp(pgid: Option<Pid>) -> io::Result<i32> {
+    libc_errno::set_errno(libc_errno::Errno(0));
+    let r = unsafe { c::getpriority(c::PRIO_PGRP, Pid::as_raw(pgid) as _) };
+    if libc_errno::errno().0 != 0 {
+        ret_c_int(r)
+    } else {
+        Ok(r)
+    }
+}
+
+#[cfg(not(any(target_os = "fuchsia", target_os = "redox", target_os = "wasi")))]
+#[inline]
+pub(crate) fn getpriority_process(pid: Option<Pid>) -> io::Result<i32> {
+    libc_errno::set_errno(libc_errno::Errno(0));
+    let r = unsafe { c::getpriority(c::PRIO_PROCESS, Pid::as_raw(pid) as _) };
+    if libc_errno::errno().0 != 0 {
+        ret_c_int(r)
+    } else {
+        Ok(r)
+    }
+}
+
+#[cfg(not(any(target_os = "fuchsia", target_os = "redox", target_os = "wasi")))]
+#[inline]
+pub(crate) fn setpriority_user(uid: Uid, priority: i32) -> io::Result<()> {
+    unsafe { ret(c::setpriority(c::PRIO_USER, uid.as_raw() as _, priority)) }
+}
+
+#[cfg(not(any(target_os = "fuchsia", target_os = "redox", target_os = "wasi")))]
+#[inline]
+pub(crate) fn setpriority_pgrp(pgid: Option<Pid>, priority: i32) -> io::Result<()> {
+    unsafe {
+        ret(c::setpriority(
+            c::PRIO_PGRP,
+            Pid::as_raw(pgid) as _,
+            priority,
+        ))
+    }
+}
+
+#[cfg(not(any(target_os = "fuchsia", target_os = "redox", target_os = "wasi")))]
+#[inline]
+pub(crate) fn setpriority_process(pid: Option<Pid>, priority: i32) -> io::Result<()> {
+    unsafe {
+        ret(c::setpriority(
+            c::PRIO_PROCESS,
+            Pid::as_raw(pid) as _,
+            priority,
+        ))
+    }
+}
+
+#[cfg(not(any(target_os = "fuchsia", target_os = "redox", target_os = "wasi")))]
+#[inline]
+pub(crate) fn getrlimit(limit: Resource) -> Rlimit {
+    let mut result = MaybeUninit::<libc_rlimit>::uninit();
+    unsafe {
+        ret_infallible(libc_getrlimit(limit as _, result.as_mut_ptr()));
+        rlimit_from_libc(result.assume_init())
+    }
+}
+
+#[cfg(not(any(target_os = "fuchsia", target_os = "redox", target_os = "wasi")))]
+#[inline]
+pub(crate) fn setrlimit(limit: Resource, new: Rlimit) -> io::Result<()> {
+    let lim = rlimit_to_libc(new)?;
+    unsafe { ret(libc_setrlimit(limit as _, &lim)) }
+}
+
+#[cfg(any(target_os = "android", target_os = "linux"))]
+#[inline]
+pub(crate) fn prlimit(pid: Option<Pid>, limit: Resource, new: Rlimit) -> io::Result<Rlimit> {
+    let lim = rlimit_to_libc(new)?;
+    let mut result = MaybeUninit::<libc_rlimit>::uninit();
+    unsafe {
+        ret(libc_prlimit(
+            Pid::as_raw(pid),
+            limit as _,
+            &lim,
+            result.as_mut_ptr(),
+        ))
+        .map(|()| rlimit_from_libc(result.assume_init()))
+    }
+}
+
+/// Convert a Rust [`Rlimit`] to a C `libc_rlimit`.
+#[cfg(not(any(target_os = "fuchsia", target_os = "redox", target_os = "wasi")))]
+fn rlimit_from_libc(lim: libc_rlimit) -> Rlimit {
+    let current = if lim.rlim_cur == LIBC_RLIM_INFINITY {
+        None
+    } else {
+        Some(lim.rlim_cur.try_into().unwrap())
+    };
+    let maximum = if lim.rlim_max == LIBC_RLIM_INFINITY {
+        None
+    } else {
+        Some(lim.rlim_max.try_into().unwrap())
+    };
+    Rlimit { current, maximum }
+}
+
+/// Convert a C `libc_rlimit` to a Rust `Rlimit`.
+#[cfg(not(any(target_os = "fuchsia", target_os = "redox", target_os = "wasi")))]
+fn rlimit_to_libc(lim: Rlimit) -> io::Result<libc_rlimit> {
+    let Rlimit { current, maximum } = lim;
+    let rlim_cur = match current {
+        Some(r) => r.try_into().map_err(|_e| io::Errno::INVAL)?,
+        None => LIBC_RLIM_INFINITY as _,
+    };
+    let rlim_max = match maximum {
+        Some(r) => r.try_into().map_err(|_e| io::Errno::INVAL)?,
+        None => LIBC_RLIM_INFINITY as _,
+    };
+    Ok(libc_rlimit { rlim_cur, rlim_max })
+}
+
+#[cfg(not(target_os = "wasi"))]
+#[inline]
+pub(crate) fn wait(waitopts: WaitOptions) -> io::Result<Option<(Pid, WaitStatus)>> {
+    _waitpid(!0, waitopts)
+}
+
+#[cfg(not(target_os = "wasi"))]
+#[inline]
+pub(crate) fn waitpid(
+    pid: Option<Pid>,
+    waitopts: WaitOptions,
+) -> io::Result<Option<(Pid, WaitStatus)>> {
+    _waitpid(Pid::as_raw(pid), waitopts)
+}
+
+#[cfg(not(target_os = "wasi"))]
+#[inline]
+pub(crate) fn _waitpid(
+    pid: RawPid,
+    waitopts: WaitOptions,
+) -> io::Result<Option<(Pid, WaitStatus)>> {
+    unsafe {
+        let mut status: c::c_int = 0;
+        let pid = ret_c_int(c::waitpid(pid as _, &mut status, waitopts.bits() as _))?;
+        Ok(RawNonZeroPid::new(pid).map(|non_zero| {
+            (
+                Pid::from_raw_nonzero(non_zero),
+                WaitStatus::new(status as _),
+            )
+        }))
+    }
+}
+
+#[inline]
+pub(crate) fn exit_group(code: c::c_int) -> ! {
+    // `_exit` and `_Exit` are the same; it's just a matter of which ones
+    // the libc bindings expose.
+    #[cfg(any(target_os = "wasi", target_os = "solid"))]
+    unsafe {
+        c::_Exit(code)
+    }
+    #[cfg(unix)]
+    unsafe {
+        c::_exit(code)
+    }
+}
+
+#[cfg(not(target_os = "wasi"))]
+#[inline]
+pub(crate) fn setsid() -> io::Result<Pid> {
+    unsafe {
+        let pid = ret_c_int(c::setsid())?;
+        debug_assert_ne!(pid, 0);
+        Ok(Pid::from_raw_nonzero(RawNonZeroPid::new_unchecked(pid)))
+    }
+}
+
+#[cfg(not(target_os = "wasi"))]
+#[inline]
+pub(crate) fn kill_process(pid: Pid, sig: Signal) -> io::Result<()> {
+    unsafe { ret(c::kill(pid.as_raw_nonzero().get(), sig as i32)) }
+}
+
+#[cfg(not(target_os = "wasi"))]
+#[inline]
+pub(crate) fn kill_process_group(pid: Pid, sig: Signal) -> io::Result<()> {
+    unsafe {
+        ret(c::kill(
+            pid.as_raw_nonzero().get().wrapping_neg(),
+            sig as i32,
+        ))
+    }
+}
+
+#[cfg(not(target_os = "wasi"))]
+#[inline]
+pub(crate) fn kill_current_process_group(sig: Signal) -> io::Result<()> {
+    unsafe { ret(c::kill(0, sig as i32)) }
+}
diff --git a/vendor/rustix/src/imp/libc/process/types.rs b/vendor/rustix/src/imp/libc/process/types.rs
new file mode 100644
index 000000000..60d629d81
--- /dev/null
+++ b/vendor/rustix/src/imp/libc/process/types.rs
@@ -0,0 +1,361 @@
+use super::super::c;
+
+/// A command for use with [`membarrier`] and [`membarrier_cpu`].
+///
+/// For `MEMBARRIER_CMD_QUERY`, see [`membarrier_query`].
+///
+/// [`membarrier`]: crate::process::membarrier
+/// [`membarrier_cpu`]: crate::process::membarrier_cpu
+/// [`membarrier_query`]: crate::process::membarrier_query
+// TODO: These are not yet exposed through libc, so we define the
+// constants ourselves.
+#[cfg(any(target_os = "android", target_os = "linux"))]
+#[derive(Copy, Clone, Eq, PartialEq, Debug)]
+#[repr(u32)]
+pub enum MembarrierCommand {
+    /// `MEMBARRIER_CMD_GLOBAL`
+    #[doc(alias = "Shared")]
+    #[doc(alias = "MEMBARRIER_CMD_SHARED")]
+    Global = 1,
+    /// `MEMBARRIER_CMD_GLOBAL_EXPEDITED`
+    GlobalExpedited = 2,
+    /// `MEMBARRIER_CMD_REGISTER_GLOBAL_EXPEDITED`
+    RegisterGlobalExpedited = 4,
+    /// `MEMBARRIER_CMD_PRIVATE_EXPEDITED`
+    PrivateExpedited = 8,
+    /// `MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED`
+    RegisterPrivateExpedited = 16,
+    /// `MEMBARRIER_CMD_PRIVATE_EXPEDITED_SYNC_CORE`
+    PrivateExpeditedSyncCore = 32,
+    /// `MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED_SYNC_CORE`
+    RegisterPrivateExpeditedSyncCore = 64,
+    /// `MEMBARRIER_CMD_PRIVATE_EXPEDITED_RSEQ` (since Linux 5.10)
+    PrivateExpeditedRseq = 128,
+    /// `MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED_RSEQ` (since Linux 5.10)
+    RegisterPrivateExpeditedRseq = 256,
+}
+
+/// A resource value for use with [`getrlimit`], [`setrlimit`], and
+/// [`prlimit`].
+///
+/// [`getrlimit`]: crate::process::getrlimit
+/// [`setrlimit`]: crate::process::setrlimit
+/// [`prlimit`]: crate::process::prlimit
+#[cfg(not(any(target_os = "fuchsia", target_os = "redox", target_os = "wasi")))]
+#[derive(Copy, Clone, Debug, Eq, PartialEq)]
+#[repr(i32)]
+pub enum Resource {
+    /// `RLIMIT_CPU`
+    Cpu = c::RLIMIT_CPU as c::c_int,
+    /// `RLIMIT_FSIZE`
+    Fsize = c::RLIMIT_FSIZE as c::c_int,
+    /// `RLIMIT_DATA`
+    Data = c::RLIMIT_DATA as c::c_int,
+    /// `RLIMIT_STACK`
+    Stack = c::RLIMIT_STACK as c::c_int,
+    /// `RLIMIT_CORE`
+    Core = c::RLIMIT_CORE as c::c_int,
+    /// `RLIMIT_RSS`
+    #[cfg(not(any(target_os = "illumos", target_os = "ios", target_os = "macos")))]
+    Rss = c::RLIMIT_RSS as c::c_int,
+    /// `RLIMIT_NPROC`
+    #[cfg(not(target_os = "illumos"))]
+    Nproc = c::RLIMIT_NPROC as c::c_int,
+    /// `RLIMIT_NOFILE`
+    Nofile = c::RLIMIT_NOFILE as c::c_int,
+    /// `RLIMIT_MEMLOCK`
+    #[cfg(not(target_os = "illumos"))]
+    Memlock = c::RLIMIT_MEMLOCK as c::c_int,
+    /// `RLIMIT_AS`
+    #[cfg(not(target_os = "openbsd"))]
+    As = c::RLIMIT_AS as c::c_int,
+    /// `RLIMIT_LOCKS`
+    #[cfg(not(any(
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "illumos",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    )))]
+    Locks = c::RLIMIT_LOCKS as c::c_int,
+    /// `RLIMIT_SIGPENDING`
+    #[cfg(not(any(
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "illumos",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    )))]
+    Sigpending = c::RLIMIT_SIGPENDING as c::c_int,
+    /// `RLIMIT_MSGQUEUE`
+    #[cfg(not(any(
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "illumos",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    )))]
+    Msgqueue = c::RLIMIT_MSGQUEUE as c::c_int,
+    /// `RLIMIT_NICE`
+    #[cfg(not(any(
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "illumos",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    )))]
+    Nice = c::RLIMIT_NICE as c::c_int,
+    /// `RLIMIT_RTPRIO`
+    #[cfg(not(any(
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "illumos",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    )))]
+    Rtprio = c::RLIMIT_RTPRIO as c::c_int,
+    /// `RLIMIT_RTTIME`
+    #[cfg(not(any(
+        target_os = "android",
+        target_os = "dragonfly",
+        target_os = "emscripten",
+        target_os = "freebsd",
+        target_os = "illumos",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    )))]
+    Rttime = c::RLIMIT_RTTIME as c::c_int,
+}
+
+#[cfg(any(target_os = "ios", target_os = "macos"))]
+impl Resource {
+    /// `RLIMIT_RSS`
+    #[allow(non_upper_case_globals)]
+    pub const Rss: Self = Self::As;
+}
+
+/// A signal number for use with [`kill_process`], [`kill_process_group`],
+/// and [`kill_current_process_group`].
+///
+/// [`kill_process`]: crate::process::kill_process
+/// [`kill_process_group`]: crate::process::kill_process_group
+/// [`kill_current_process_group`]: crate::process::kill_current_process_group
+#[cfg(not(target_os = "wasi"))]
+#[derive(Copy, Clone, Debug, Eq, PartialEq)]
+#[repr(i32)]
+pub enum Signal {
+    /// `SIGHUP`
+    Hup = c::SIGHUP,
+    /// `SIGINT`
+    Int = c::SIGINT,
+    /// `SIGQUIT`
+    Quit = c::SIGQUIT,
+    /// `SIGILL`
+    Ill = c::SIGILL,
+    /// `SIGTRAP`
+    Trap = c::SIGTRAP,
+    /// `SIGABRT`, aka `SIGIOT`
+    #[doc(alias = "Iot")]
+    #[doc(alias = "Abrt")]
+    Abort = c::SIGABRT,
+    /// `SIGBUS`
+    Bus = c::SIGBUS,
+    /// `SIGFPE`
+    Fpe = c::SIGFPE,
+    /// `SIGKILL`
+    Kill = c::SIGKILL,
+    /// `SIGUSR1`
+    Usr1 = c::SIGUSR1,
+    /// `SIGSEGV`
+    Segv = c::SIGSEGV,
+    /// `SIGUSR2`
+    Usr2 = c::SIGUSR2,
+    /// `SIGPIPE`
+    Pipe = c::SIGPIPE,
+    /// `SIGALRM`
+    #[doc(alias = "Alrm")]
+    Alarm = c::SIGALRM,
+    /// `SIGTERM`
+    Term = c::SIGTERM,
+    /// `SIGSTKFLT`
+    #[cfg(not(any(
+        target_os = "freebsd",
+        target_os = "illumos",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+        all(
+            any(target_os = "android", target_os = "linux"),
+            any(target_arch = "mips", target_arch = "mips64"),
+        )
+    )))]
+    Stkflt = c::SIGSTKFLT,
+    /// `SIGCHLD`
+    #[doc(alias = "Chld")]
+    Child = c::SIGCHLD,
+    /// `SIGCONT`
+    Cont = c::SIGCONT,
+    /// `SIGSTOP`
+    Stop = c::SIGSTOP,
+    /// `SIGTSTP`
+    Tstp = c::SIGTSTP,
+    /// `SIGTTIN`
+    Ttin = c::SIGTTIN,
+    /// `SIGTTOU`
+    Ttou = c::SIGTTOU,
+    /// `SIGURG`
+    Urg = c::SIGURG,
+    /// `SIGXCPU`
+    Xcpu = c::SIGXCPU,
+    /// `SIGXFSZ`
+    Xfsz = c::SIGXFSZ,
+    /// `SIGVTALRM`
+    #[doc(alias = "Vtalrm")]
+    Vtalarm = c::SIGVTALRM,
+    /// `SIGPROF`
+    Prof = c::SIGPROF,
+    /// `SIGWINCH`
+    Winch = c::SIGWINCH,
+    /// `SIGIO`, aka `SIGPOLL`
+    #[doc(alias = "Poll")]
+    Io = c::SIGIO,
+    /// `SIGPWR`
+    #[cfg(not(any(
+        target_os = "freebsd",
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    )))]
+    #[doc(alias = "Pwr")]
+    Power = c::SIGPWR,
+    /// `SIGSYS`, aka `SIGUNUSED`
+    #[doc(alias = "Unused")]
+    Sys = c::SIGSYS,
+}
+
+#[cfg(not(target_os = "wasi"))]
+impl Signal {
+    /// Convert a raw signal number into a `Signal`, if possible.
+    pub fn from_raw(sig: i32) -> Option<Self> {
+        match sig as _ {
+            c::SIGHUP => Some(Self::Hup),
+            c::SIGINT => Some(Self::Int),
+            c::SIGQUIT => Some(Self::Quit),
+            c::SIGILL => Some(Self::Ill),
+            c::SIGTRAP => Some(Self::Trap),
+            c::SIGABRT => Some(Self::Abort),
+            c::SIGBUS => Some(Self::Bus),
+            c::SIGFPE => Some(Self::Fpe),
+            c::SIGKILL => Some(Self::Kill),
+            c::SIGUSR1 => Some(Self::Usr1),
+            c::SIGSEGV => Some(Self::Segv),
+            c::SIGUSR2 => Some(Self::Usr2),
+            c::SIGPIPE => Some(Self::Pipe),
+            c::SIGALRM => Some(Self::Alarm),
+            c::SIGTERM => Some(Self::Term),
+            #[cfg(not(any(
+                target_os = "freebsd",
+                target_os = "illumos",
+                target_os = "ios",
+                target_os = "macos",
+                target_os = "netbsd",
+                target_os = "openbsd",
+                all(
+                    any(target_os = "android", target_os = "linux"),
+                    any(target_arch = "mips", target_arch = "mips64"),
+                )
+            )))]
+            c::SIGSTKFLT => Some(Self::Stkflt),
+            c::SIGCHLD => Some(Self::Child),
+            c::SIGCONT => Some(Self::Cont),
+            c::SIGSTOP => Some(Self::Stop),
+            c::SIGTSTP => Some(Self::Tstp),
+            c::SIGTTIN => Some(Self::Ttin),
+            c::SIGTTOU => Some(Self::Ttou),
+            c::SIGURG => Some(Self::Urg),
+            c::SIGXCPU => Some(Self::Xcpu),
+            c::SIGXFSZ => Some(Self::Xfsz),
+            c::SIGVTALRM => Some(Self::Vtalarm),
+            c::SIGPROF => Some(Self::Prof),
+            c::SIGWINCH => Some(Self::Winch),
+            c::SIGIO => Some(Self::Io),
+            #[cfg(not(any(
+                target_os = "freebsd",
+                target_os = "ios",
+                target_os = "macos",
+                target_os = "netbsd",
+                target_os = "openbsd",
+            )))]
+            c::SIGPWR => Some(Self::Power),
+            c::SIGSYS => Some(Self::Sys),
+            _ => None,
+        }
+    }
+}
+
+pub const EXIT_SUCCESS: c::c_int = c::EXIT_SUCCESS;
+pub const EXIT_FAILURE: c::c_int = c::EXIT_FAILURE;
+#[cfg(not(target_os = "wasi"))]
+pub const EXIT_SIGNALED_SIGABRT: c::c_int = 128 + c::SIGABRT;
+
+/// A process identifier as a raw integer.
+#[cfg(not(target_os = "wasi"))]
+pub type RawPid = c::pid_t;
+/// A non-zero process identifier as a raw non-zero integer.
+#[cfg(not(target_os = "wasi"))]
+pub type RawNonZeroPid = core::num::NonZeroI32;
+/// A group identifier as a raw integer.
+#[cfg(not(target_os = "wasi"))]
+pub type RawGid = c::gid_t;
+/// A user identifier as a raw integer.
+#[cfg(not(target_os = "wasi"))]
+pub type RawUid = c::uid_t;
+/// A CPU identifier as a raw integer.
+#[cfg(any(target_os = "android", target_os = "linux"))]
+pub type RawCpuid = u32;
+
+#[cfg(not(target_os = "wasi"))]
+pub(crate) type RawUname = c::utsname;
+
+#[cfg(any(
+    target_os = "android",
+    target_os = "dragonfly",
+    target_os = "fuchsia",
+    target_os = "linux",
+))]
+pub(crate) type RawCpuSet = c::cpu_set_t;
+
+#[cfg(any(
+    target_os = "android",
+    target_os = "dragonfly",
+    target_os = "fuchsia",
+    target_os = "linux",
+))]
+#[inline]
+pub(crate) fn raw_cpu_set_new() -> RawCpuSet {
+    let mut set = unsafe { core::mem::zeroed() };
+    super::cpu_set::CPU_ZERO(&mut set);
+    set
+}
+
+#[cfg(any(
+    target_os = "android",
+    target_os = "dragonfly",
+    target_os = "fuchsia",
+    target_os = "linux",
+))]
+pub(crate) const CPU_SETSIZE: usize = c::CPU_SETSIZE as usize;
diff --git a/vendor/rustix/src/imp/libc/process/wait.rs b/vendor/rustix/src/imp/libc/process/wait.rs
new file mode 100644
index 000000000..6de79955d
--- /dev/null
+++ b/vendor/rustix/src/imp/libc/process/wait.rs
@@ -0,0 +1,6 @@
+use super::super::c;
+
+pub(crate) use c::{
+    WCONTINUED, WEXITSTATUS, WIFCONTINUED, WIFEXITED, WIFSIGNALED, WIFSTOPPED, WNOHANG, WSTOPSIG,
+    WTERMSIG, WUNTRACED,
+};
diff --git a/vendor/rustix/src/imp/libc/rand/mod.rs b/vendor/rustix/src/imp/libc/rand/mod.rs
new file mode 100644
index 000000000..1e0181a99
--- /dev/null
+++ b/vendor/rustix/src/imp/libc/rand/mod.rs
@@ -0,0 +1,2 @@
+pub(crate) mod syscalls;
+pub(crate) mod types;
diff --git a/vendor/rustix/src/imp/libc/rand/syscalls.rs b/vendor/rustix/src/imp/libc/rand/syscalls.rs
new file mode 100644
index 000000000..1c4286235
--- /dev/null
+++ b/vendor/rustix/src/imp/libc/rand/syscalls.rs
@@ -0,0 +1,16 @@
+//! libc syscalls supporting `rustix::rand`.
+
+#[cfg(target_os = "linux")]
+use {super::super::c, super::super::conv::ret_ssize_t, crate::io, crate::rand::GetRandomFlags};
+
+#[cfg(target_os = "linux")]
+pub(crate) fn getrandom(buf: &mut [u8], flags: GetRandomFlags) -> io::Result<usize> {
+    // `getrandom` wasn't supported in glibc until 2.25.
+    weak_or_syscall! {
+        fn getrandom(buf: *mut c::c_void, buflen: c::size_t, flags: c::c_uint) via SYS_getrandom -> c::ssize_t
+    }
+
+    let nread =
+        unsafe { ret_ssize_t(getrandom(buf.as_mut_ptr().cast(), buf.len(), flags.bits()))? };
+    Ok(nread as usize)
+}
diff --git a/vendor/rustix/src/imp/libc/rand/types.rs b/vendor/rustix/src/imp/libc/rand/types.rs
new file mode 100644
index 000000000..2ba3f1119
--- /dev/null
+++ b/vendor/rustix/src/imp/libc/rand/types.rs
@@ -0,0 +1,19 @@
+#[cfg(target_os = "linux")]
+use super::super::c;
+#[cfg(target_os = "linux")]
+use bitflags::bitflags;
+
+#[cfg(target_os = "linux")]
+bitflags! {
+    /// `GRND_*` flags for use with [`getrandom`].
+    ///
+    /// [`getrandom`]: crate::rand::getrandom
+    pub struct GetRandomFlags: u32 {
+        /// `GRND_RANDOM`
+        const RANDOM = c::GRND_RANDOM;
+        /// `GRND_NONBLOCK`
+        const NONBLOCK = c::GRND_NONBLOCK;
+        /// `GRND_INSECURE`
+        const INSECURE = c::GRND_INSECURE;
+    }
+}
diff --git a/vendor/rustix/src/imp/libc/termios/mod.rs b/vendor/rustix/src/imp/libc/termios/mod.rs
new file mode 100644
index 000000000..1e0181a99
--- /dev/null
+++ b/vendor/rustix/src/imp/libc/termios/mod.rs
@@ -0,0 +1,2 @@
+pub(crate) mod syscalls;
+pub(crate) mod types;
diff --git a/vendor/rustix/src/imp/libc/termios/syscalls.rs b/vendor/rustix/src/imp/libc/termios/syscalls.rs
new file mode 100644
index 000000000..91b01b4a1
--- /dev/null
+++ b/vendor/rustix/src/imp/libc/termios/syscalls.rs
@@ -0,0 +1,159 @@
+//! libc syscalls supporting `rustix::termios`.
+//!
+//! # Safety
+//!
+//! See the `rustix::imp::syscalls` module documentation for details.
+
+#![allow(unsafe_code)]
+
+use super::super::c;
+use super::super::conv::{borrowed_fd, ret, ret_pid_t};
+use crate::fd::BorrowedFd;
+#[cfg(feature = "procfs")]
+#[cfg(not(any(target_os = "fuchsia", target_os = "wasi")))]
+use crate::ffi::CStr;
+use crate::io;
+use crate::process::{Pid, RawNonZeroPid};
+use crate::termios::{Action, OptionalActions, QueueSelector, Speed, Termios, Winsize};
+use core::mem::MaybeUninit;
+use libc_errno::errno;
+
+pub(crate) fn tcgetattr(fd: BorrowedFd<'_>) -> io::Result<Termios> {
+    let mut result = MaybeUninit::<Termios>::uninit();
+    unsafe {
+        ret(c::tcgetattr(borrowed_fd(fd), result.as_mut_ptr())).map(|()| result.assume_init())
+    }
+}
+
+pub(crate) fn tcgetpgrp(fd: BorrowedFd<'_>) -> io::Result<Pid> {
+    unsafe {
+        let pid = ret_pid_t(c::tcgetpgrp(borrowed_fd(fd)))?;
+        debug_assert_ne!(pid, 0);
+        Ok(Pid::from_raw_nonzero(RawNonZeroPid::new_unchecked(pid)))
+    }
+}
+
+pub(crate) fn tcsetpgrp(fd: BorrowedFd<'_>, pid: Pid) -> io::Result<()> {
+    unsafe { ret(c::tcsetpgrp(borrowed_fd(fd), pid.as_raw_nonzero().get())) }
+}
+
+pub(crate) fn tcsetattr(
+    fd: BorrowedFd,
+    optional_actions: OptionalActions,
+    termios: &Termios,
+) -> io::Result<()> {
+    unsafe {
+        ret(c::tcsetattr(
+            borrowed_fd(fd),
+            optional_actions as _,
+            termios,
+        ))
+    }
+}
+
+pub(crate) fn tcsendbreak(fd: BorrowedFd) -> io::Result<()> {
+    unsafe { ret(c::tcsendbreak(borrowed_fd(fd), 0)) }
+}
+
+pub(crate) fn tcdrain(fd: BorrowedFd) -> io::Result<()> {
+    unsafe { ret(c::tcdrain(borrowed_fd(fd))) }
+}
+
+pub(crate) fn tcflush(fd: BorrowedFd, queue_selector: QueueSelector) -> io::Result<()> {
+    unsafe { ret(c::tcflush(borrowed_fd(fd), queue_selector as _)) }
+}
+
+pub(crate) fn tcflow(fd: BorrowedFd, action: Action) -> io::Result<()> {
+    unsafe { ret(c::tcflow(borrowed_fd(fd), action as _)) }
+}
+
+pub(crate) fn tcgetsid(fd: BorrowedFd) -> io::Result<Pid> {
+    unsafe {
+        let pid = ret_pid_t(c::tcgetsid(borrowed_fd(fd)))?;
+        debug_assert_ne!(pid, 0);
+        Ok(Pid::from_raw_nonzero(RawNonZeroPid::new_unchecked(pid)))
+    }
+}
+
+pub(crate) fn tcsetwinsize(fd: BorrowedFd, winsize: Winsize) -> io::Result<()> {
+    unsafe { ret(c::ioctl(borrowed_fd(fd), c::TIOCSWINSZ, &winsize)) }
+}
+
+pub(crate) fn tcgetwinsize(fd: BorrowedFd) -> io::Result<Winsize> {
+    unsafe {
+        let mut buf = MaybeUninit::<Winsize>::uninit();
+        ret(c::ioctl(
+            borrowed_fd(fd),
+            c::TIOCGWINSZ.into(),
+            buf.as_mut_ptr(),
+        ))?;
+        Ok(buf.assume_init())
+    }
+}
+
+#[inline]
+#[must_use]
+pub(crate) fn cfgetospeed(termios: &Termios) -> Speed {
+    unsafe { c::cfgetospeed(termios) }
+}
+
+#[inline]
+#[must_use]
+pub(crate) fn cfgetispeed(termios: &Termios) -> Speed {
+    unsafe { c::cfgetispeed(termios) }
+}
+
+#[inline]
+pub(crate) fn cfmakeraw(termios: &mut Termios) {
+    unsafe { c::cfmakeraw(termios) }
+}
+
+#[inline]
+pub(crate) fn cfsetospeed(termios: &mut Termios, speed: Speed) -> io::Result<()> {
+    unsafe { ret(c::cfsetospeed(termios, speed)) }
+}
+
+#[inline]
+pub(crate) fn cfsetispeed(termios: &mut Termios, speed: Speed) -> io::Result<()> {
+    unsafe { ret(c::cfsetispeed(termios, speed)) }
+}
+
+#[inline]
+pub(crate) fn cfsetspeed(termios: &mut Termios, speed: Speed) -> io::Result<()> {
+    unsafe { ret(c::cfsetspeed(termios, speed)) }
+}
+
+pub(crate) fn isatty(fd: BorrowedFd<'_>) -> bool {
+    let res = unsafe { c::isatty(borrowed_fd(fd)) };
+    if res == 0 {
+        match errno().0 {
+            #[cfg(not(any(target_os = "android", target_os = "linux")))]
+            c::ENOTTY => false,
+
+            // Old Linux versions reportedly return `EINVAL`.
+            // <https://man7.org/linux/man-pages/man3/isatty.3.html#ERRORS>
+            #[cfg(any(target_os = "android", target_os = "linux"))]
+            c::ENOTTY | c::EINVAL => false,
+
+            // Darwin mysteriously returns `EOPNOTSUPP` sometimes.
+            #[cfg(any(target_os = "ios", target_os = "macos"))]
+            c::EOPNOTSUPP => false,
+
+            err => panic!("unexpected error from isatty: {:?}", err),
+        }
+    } else {
+        true
+    }
+}
+
+#[cfg(feature = "procfs")]
+#[cfg(not(any(target_os = "fuchsia", target_os = "wasi")))]
+pub(crate) fn ttyname(dirfd: BorrowedFd<'_>, buf: &mut [u8]) -> io::Result<usize> {
+    unsafe {
+        // `ttyname_r` returns its error status rather than using `errno`.
+        match c::ttyname_r(borrowed_fd(dirfd), buf.as_mut_ptr().cast(), buf.len()) {
+            0 => Ok(CStr::from_ptr(buf.as_ptr().cast()).to_bytes().len()),
+            err => Err(io::Errno::from_raw_os_error(err)),
+        }
+    }
+}
diff --git a/vendor/rustix/src/imp/libc/termios/types.rs b/vendor/rustix/src/imp/libc/termios/types.rs
new file mode 100644
index 000000000..7e6728755
--- /dev/null
+++ b/vendor/rustix/src/imp/libc/termios/types.rs
@@ -0,0 +1,951 @@
+use super::super::c;
+
+/// `TCSA*` values for use with [`tcsetattr`].
+///
+/// [`tcsetattr`]: crate::termios::tcsetattr
+#[derive(Debug, Clone, Copy, Eq, PartialEq, Hash)]
+#[repr(i32)]
+pub enum OptionalActions {
+    /// `TCSANOW`—Make the change immediately.
+    Now = c::TCSANOW,
+
+    /// `TCSADRAIN`—Make the change after all output has been transmitted.
+    Drain = c::TCSADRAIN,
+
+    /// `TCSAFLUSH`—Discard any pending input and then make the change
+    /// after all output has been transmitted.
+    Flush = c::TCSAFLUSH,
+}
+
+/// `TC*` values for use with [`tcflush`].
+///
+/// [`tcflush`]: crate::termios::tcflush
+#[derive(Debug, Clone, Copy, Eq, PartialEq, Hash)]
+#[repr(i32)]
+pub enum QueueSelector {
+    /// `TCIFLUSH`—Flush data received but not read.
+    IFlush = c::TCIFLUSH,
+
+    /// `TCOFLUSH`—Flush data written but not transmitted.
+    OFlush = c::TCOFLUSH,
+
+    /// `TCIOFLUSH`—`IFlush` and `OFlush` combined.
+    IOFlush = c::TCIOFLUSH,
+}
+
+/// `TC*` values for use with [`tcflow`].
+///
+/// [`tcflow`]: crate::termios::tcflow
+#[derive(Debug, Clone, Copy, Eq, PartialEq, Hash)]
+#[repr(i32)]
+pub enum Action {
+    /// `TCOOFF`—Suspend output.
+    OOff = c::TCOOFF,
+
+    /// `TCOON`—Restart suspended output.
+    OOn = c::TCOON,
+
+    /// `TCIOFF`—Transmits a STOP byte.
+    IOff = c::TCIOFF,
+
+    /// `TCION`—Transmits a START byte.
+    IOn = c::TCION,
+}
+
+/// `struct termios` for use with [`tcgetattr`].
+///
+/// [`tcgetattr`]: crate::termios::tcgetattr
+pub type Termios = c::termios;
+
+/// `struct winsize` for use with [`tcgetwinsize`].
+///
+/// [`tcgetwinsize`]: crate::termios::tcgetwinsize
+pub type Winsize = c::winsize;
+
+/// `tcflag_t`—A type for the flags fields of [`Termios`].
+pub type Tcflag = c::tcflag_t;
+
+/// `speed_t`—A return type for [`cfsetspeed`] and similar.
+///
+/// [`cfsetspeed`]: crate::termios::cfsetspeed
+pub type Speed = c::speed_t;
+
+/// `VINTR`
+pub const VINTR: usize = c::VINTR as usize;
+
+/// `VQUIT`
+pub const VQUIT: usize = c::VQUIT as usize;
+
+/// `VERASE`
+pub const VERASE: usize = c::VERASE as usize;
+
+/// `VKILL`
+pub const VKILL: usize = c::VKILL as usize;
+
+/// `VEOF`
+pub const VEOF: usize = c::VEOF as usize;
+
+/// `VTIME`
+pub const VTIME: usize = c::VTIME as usize;
+
+/// `VMIN`
+pub const VMIN: usize = c::VMIN as usize;
+
+/// `VSWTC`
+#[cfg(not(any(
+    target_os = "dragonfly",
+    target_os = "freebsd",
+    target_os = "illumos",
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "netbsd",
+    target_os = "openbsd",
+)))]
+pub const VSWTC: usize = c::VSWTC as usize;
+
+/// `VSTART`
+pub const VSTART: usize = c::VSTART as usize;
+
+/// `VSTOP`
+pub const VSTOP: usize = c::VSTOP as usize;
+
+/// `VSUSP`
+pub const VSUSP: usize = c::VSUSP as usize;
+
+/// `VEOL`
+pub const VEOL: usize = c::VEOL as usize;
+
+/// `VREPRINT`
+pub const VREPRINT: usize = c::VREPRINT as usize;
+
+/// `VDISCARD`
+pub const VDISCARD: usize = c::VDISCARD as usize;
+
+/// `VWERASE`
+pub const VWERASE: usize = c::VWERASE as usize;
+
+/// `VLNEXT`
+pub const VLNEXT: usize = c::VLNEXT as usize;
+
+/// `VEOL2`
+pub const VEOL2: usize = c::VEOL2 as usize;
+
+/// `IGNBRK`
+#[cfg(not(any(target_os = "ios", target_os = "macos")))]
+pub const IGNBRK: c::c_uint = c::IGNBRK;
+
+/// `BRKINT`
+#[cfg(not(any(target_os = "ios", target_os = "macos")))]
+pub const BRKINT: c::c_uint = c::BRKINT;
+
+/// `IGNPAR`
+#[cfg(not(any(target_os = "ios", target_os = "macos")))]
+pub const IGNPAR: c::c_uint = c::IGNPAR;
+
+/// `PARMRK`
+#[cfg(not(any(target_os = "ios", target_os = "macos")))]
+pub const PARMRK: c::c_uint = c::PARMRK;
+
+/// `INPCK`
+#[cfg(not(any(target_os = "ios", target_os = "macos")))]
+pub const INPCK: c::c_uint = c::INPCK;
+
+/// `ISTRIP`
+#[cfg(not(any(target_os = "ios", target_os = "macos")))]
+pub const ISTRIP: c::c_uint = c::ISTRIP;
+
+/// `INLCR`
+#[cfg(not(any(target_os = "ios", target_os = "macos")))]
+pub const INLCR: c::c_uint = c::INLCR;
+
+/// `IGNCR`
+#[cfg(not(any(target_os = "ios", target_os = "macos")))]
+pub const IGNCR: c::c_uint = c::IGNCR;
+
+/// `ICRNL`
+#[cfg(not(any(target_os = "ios", target_os = "macos")))]
+pub const ICRNL: c::c_uint = c::ICRNL;
+
+/// `IUCLC`
+#[cfg(any(target_os = "haiku", target_os = "illumos", target_os = "solaris"))]
+pub const IUCLC: c::c_uint = c::IUCLC;
+
+/// `IXON`
+#[cfg(not(any(target_os = "ios", target_os = "macos")))]
+pub const IXON: c::c_uint = c::IXON;
+
+/// `IXANY`
+#[cfg(not(any(target_os = "ios", target_os = "macos", target_os = "redox")))]
+pub const IXANY: c::c_uint = c::IXANY;
+
+/// `IXOFF`
+#[cfg(not(any(target_os = "ios", target_os = "macos")))]
+pub const IXOFF: c::c_uint = c::IXOFF;
+
+/// `IMAXBEL`
+#[cfg(not(any(target_os = "ios", target_os = "macos", target_os = "redox")))]
+pub const IMAXBEL: c::c_uint = c::IMAXBEL;
+
+/// `IUTF8`
+#[cfg(not(any(
+    target_os = "dragonfly",
+    target_os = "emscripten",
+    target_os = "freebsd",
+    target_os = "illumos",
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "netbsd",
+    target_os = "openbsd",
+    target_os = "redox",
+)))]
+pub const IUTF8: c::c_uint = c::IUTF8;
+
+/// `OPOST`
+#[cfg(not(any(target_os = "ios", target_os = "macos")))]
+pub const OPOST: c::c_uint = c::OPOST;
+
+/// `OLCUC`
+#[cfg(not(any(
+    target_os = "dragonfly",
+    target_os = "freebsd",
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "netbsd",
+    target_os = "redox",
+)))]
+pub const OLCUC: c::c_uint = c::OLCUC;
+
+/// `ONLCR`
+#[cfg(not(any(target_os = "ios", target_os = "macos")))]
+pub const ONLCR: c::c_uint = c::ONLCR;
+
+/// `OCRNL`
+#[cfg(not(any(target_os = "ios", target_os = "macos")))]
+pub const OCRNL: c::c_uint = c::OCRNL;
+
+/// `ONOCR`
+#[cfg(not(any(target_os = "ios", target_os = "macos")))]
+pub const ONOCR: c::c_uint = c::ONOCR;
+
+/// `ONLRET`
+#[cfg(not(any(target_os = "ios", target_os = "macos")))]
+pub const ONLRET: c::c_uint = c::ONLRET;
+
+/// `OFILL`
+#[cfg(not(any(
+    target_os = "dragonfly",
+    target_os = "freebsd",
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "netbsd",
+    target_os = "openbsd",
+)))]
+pub const OFILL: c::c_uint = c::OFILL;
+
+/// `OFDEL`
+#[cfg(not(any(
+    target_os = "dragonfly",
+    target_os = "freebsd",
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "netbsd",
+    target_os = "openbsd",
+)))]
+pub const OFDEL: c::c_uint = c::OFDEL;
+
+/// `NLDLY`
+#[cfg(not(any(
+    target_os = "dragonfly",
+    target_os = "freebsd",
+    target_os = "illumos",
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "netbsd",
+    target_os = "openbsd",
+    target_os = "redox",
+)))]
+pub const NLDLY: c::c_uint = c::NLDLY;
+
+/// `NL0`
+#[cfg(not(any(
+    target_os = "dragonfly",
+    target_os = "freebsd",
+    target_os = "fuchsia",
+    target_os = "illumos",
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "netbsd",
+    target_os = "openbsd",
+    target_os = "redox",
+)))]
+pub const NL0: c::c_uint = c::NL0;
+
+/// `NL1`
+#[cfg(not(any(
+    target_os = "dragonfly",
+    target_os = "freebsd",
+    target_os = "fuchsia",
+    target_os = "illumos",
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "netbsd",
+    target_os = "openbsd",
+    target_os = "redox",
+)))]
+pub const NL1: c::c_uint = c::NL1;
+
+/// `CRDLY`
+#[cfg(not(any(
+    target_os = "dragonfly",
+    target_os = "freebsd",
+    target_os = "illumos",
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "netbsd",
+    target_os = "openbsd",
+    target_os = "redox",
+)))]
+pub const CRDLY: c::c_uint = c::CRDLY;
+
+/// `CR0`
+#[cfg(not(any(
+    target_os = "dragonfly",
+    target_os = "freebsd",
+    target_os = "fuchsia",
+    target_os = "illumos",
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "netbsd",
+    target_os = "openbsd",
+    target_os = "redox",
+)))]
+pub const CR0: c::c_uint = c::CR0;
+
+/// `CR1`
+#[cfg(not(any(
+    target_env = "musl",
+    target_os = "dragonfly",
+    target_os = "emscripten",
+    target_os = "freebsd",
+    target_os = "fuchsia",
+    target_os = "illumos",
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "netbsd",
+    target_os = "openbsd",
+    target_os = "redox",
+)))]
+pub const CR1: c::c_uint = c::CR1;
+
+/// `CR2`
+#[cfg(not(any(
+    target_env = "musl",
+    target_os = "dragonfly",
+    target_os = "emscripten",
+    target_os = "freebsd",
+    target_os = "fuchsia",
+    target_os = "illumos",
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "netbsd",
+    target_os = "openbsd",
+    target_os = "redox",
+)))]
+pub const CR2: c::c_uint = c::CR2;
+
+/// `CR3`
+#[cfg(not(any(
+    target_env = "musl",
+    target_os = "dragonfly",
+    target_os = "emscripten",
+    target_os = "freebsd",
+    target_os = "fuchsia",
+    target_os = "illumos",
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "netbsd",
+    target_os = "openbsd",
+    target_os = "redox",
+)))]
+pub const CR3: c::c_uint = c::CR3;
+
+/// `TABDLY`
+#[cfg(not(any(
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "netbsd",
+    target_os = "openbsd",
+    target_os = "illumos",
+    target_os = "redox",
+)))]
+pub const TABDLY: c::c_uint = c::TABDLY;
+
+/// `TAB0`
+#[cfg(not(any(
+    target_os = "fuchsia",
+    target_os = "illumos",
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "netbsd",
+    target_os = "openbsd",
+    target_os = "redox",
+)))]
+pub const TAB0: c::c_uint = c::TAB0;
+
+/// `TAB1`
+#[cfg(not(any(
+    target_env = "musl",
+    target_os = "dragonfly",
+    target_os = "emscripten",
+    target_os = "freebsd",
+    target_os = "fuchsia",
+    target_os = "illumos",
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "netbsd",
+    target_os = "openbsd",
+    target_os = "redox",
+)))]
+pub const TAB1: c::c_uint = c::TAB1;
+
+/// `TAB2`
+#[cfg(not(any(
+    target_env = "musl",
+    target_os = "dragonfly",
+    target_os = "emscripten",
+    target_os = "freebsd",
+    target_os = "fuchsia",
+    target_os = "illumos",
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "netbsd",
+    target_os = "openbsd",
+    target_os = "redox",
+)))]
+pub const TAB2: c::c_uint = c::TAB2;
+
+/// `TAB3`
+#[cfg(not(any(
+    target_env = "musl",
+    target_os = "emscripten",
+    target_os = "fuchsia",
+    target_os = "illumos",
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "netbsd",
+    target_os = "openbsd",
+    target_os = "redox",
+)))]
+pub const TAB3: c::c_uint = c::TAB3;
+
+/// `BSDLY`
+#[cfg(not(any(
+    target_os = "dragonfly",
+    target_os = "freebsd",
+    target_os = "illumos",
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "netbsd",
+    target_os = "openbsd",
+    target_os = "redox",
+)))]
+pub const BSDLY: c::c_uint = c::BSDLY;
+
+/// `BS0`
+#[cfg(not(any(
+    target_os = "dragonfly",
+    target_os = "freebsd",
+    target_os = "fuchsia",
+    target_os = "illumos",
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "netbsd",
+    target_os = "openbsd",
+    target_os = "redox",
+)))]
+pub const BS0: c::c_uint = c::BS0;
+
+/// `BS1`
+#[cfg(not(any(
+    target_env = "musl",
+    target_os = "emscripten",
+    target_os = "dragonfly",
+    target_os = "freebsd",
+    target_os = "fuchsia",
+    target_os = "illumos",
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "netbsd",
+    target_os = "openbsd",
+    target_os = "redox",
+)))]
+pub const BS1: c::c_uint = c::BS1;
+
+/// `FFDLY`
+#[cfg(not(any(
+    target_env = "musl",
+    target_os = "dragonfly",
+    target_os = "freebsd",
+    target_os = "illumos",
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "netbsd",
+    target_os = "openbsd",
+    target_os = "redox",
+)))]
+pub const FFDLY: c::c_uint = c::FFDLY;
+
+/// `FF0`
+#[cfg(not(any(
+    target_os = "dragonfly",
+    target_os = "freebsd",
+    target_os = "fuchsia",
+    target_os = "illumos",
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "netbsd",
+    target_os = "openbsd",
+    target_os = "redox",
+)))]
+pub const FF0: c::c_uint = c::FF0;
+
+/// `FF1`
+#[cfg(not(any(
+    target_env = "musl",
+    target_os = "dragonfly",
+    target_os = "emscripten",
+    target_os = "freebsd",
+    target_os = "fuchsia",
+    target_os = "illumos",
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "netbsd",
+    target_os = "openbsd",
+    target_os = "redox",
+)))]
+pub const FF1: c::c_uint = c::FF1;
+
+/// `VTDLY`
+#[cfg(not(any(
+    target_env = "musl",
+    target_os = "dragonfly",
+    target_os = "freebsd",
+    target_os = "illumos",
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "netbsd",
+    target_os = "openbsd",
+    target_os = "redox",
+)))]
+pub const VTDLY: c::c_uint = c::VTDLY;
+
+/// `VT0`
+#[cfg(not(any(
+    target_os = "dragonfly",
+    target_os = "freebsd",
+    target_os = "fuchsia",
+    target_os = "illumos",
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "netbsd",
+    target_os = "openbsd",
+    target_os = "redox",
+)))]
+pub const VT0: c::c_uint = c::VT0;
+
+/// `VT1`
+#[cfg(not(any(
+    target_env = "musl",
+    target_os = "dragonfly",
+    target_os = "emscripten",
+    target_os = "freebsd",
+    target_os = "fuchsia",
+    target_os = "illumos",
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "netbsd",
+    target_os = "openbsd",
+    target_os = "redox",
+)))]
+pub const VT1: c::c_uint = c::VT1;
+
+/// `B0`
+pub const B0: Speed = c::B0;
+
+/// `B50`
+pub const B50: Speed = c::B50;
+
+/// `B75`
+pub const B75: Speed = c::B75;
+
+/// `B110`
+pub const B110: Speed = c::B110;
+
+/// `B134`
+pub const B134: Speed = c::B134;
+
+/// `B150`
+pub const B150: Speed = c::B150;
+
+/// `B200`
+pub const B200: Speed = c::B200;
+
+/// `B300`
+pub const B300: Speed = c::B300;
+
+/// `B600`
+pub const B600: Speed = c::B600;
+
+/// `B1200`
+pub const B1200: Speed = c::B1200;
+
+/// `B1800`
+pub const B1800: Speed = c::B1800;
+
+/// `B2400`
+pub const B2400: Speed = c::B2400;
+
+/// `B4800`
+pub const B4800: Speed = c::B4800;
+
+/// `B9600`
+pub const B9600: Speed = c::B9600;
+
+/// `B19200`
+pub const B19200: Speed = c::B19200;
+
+/// `B38400`
+pub const B38400: Speed = c::B38400;
+
+/// `B57600`
+pub const B57600: Speed = c::B57600;
+
+/// `B115200`
+pub const B115200: Speed = c::B115200;
+
+/// `B230400`
+pub const B230400: Speed = c::B230400;
+
+/// `B460800`
+#[cfg(not(any(target_os = "ios", target_os = "macos", target_os = "openbsd")))]
+pub const B460800: Speed = c::B460800;
+
+/// `B500000`
+#[cfg(not(any(
+    target_os = "dragonfly",
+    target_os = "freebsd",
+    target_os = "illumos",
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "netbsd",
+    target_os = "openbsd",
+)))]
+pub const B500000: Speed = c::B500000;
+
+/// `B576000`
+#[cfg(not(any(
+    target_os = "dragonfly",
+    target_os = "freebsd",
+    target_os = "illumos",
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "netbsd",
+    target_os = "openbsd",
+)))]
+pub const B576000: Speed = c::B576000;
+
+/// `B921600`
+#[cfg(not(any(target_os = "ios", target_os = "macos", target_os = "openbsd")))]
+pub const B921600: Speed = c::B921600;
+
+/// `B1000000`
+#[cfg(not(any(
+    target_os = "dragonfly",
+    target_os = "freebsd",
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "netbsd",
+    target_os = "openbsd",
+)))]
+pub const B1000000: Speed = c::B1000000;
+
+/// `B1152000`
+#[cfg(not(any(
+    target_os = "dragonfly",
+    target_os = "freebsd",
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "netbsd",
+    target_os = "openbsd",
+)))]
+pub const B1152000: Speed = c::B1152000;
+
+/// `B1500000`
+#[cfg(not(any(
+    target_os = "dragonfly",
+    target_os = "freebsd",
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "netbsd",
+    target_os = "openbsd",
+)))]
+pub const B1500000: Speed = c::B1500000;
+
+/// `B2000000`
+#[cfg(not(any(
+    target_os = "dragonfly",
+    target_os = "freebsd",
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "netbsd",
+    target_os = "openbsd",
+)))]
+pub const B2000000: Speed = c::B2000000;
+
+/// `B2500000`
+#[cfg(not(any(
+    target_os = "dragonfly",
+    target_os = "freebsd",
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "netbsd",
+    target_os = "openbsd",
+)))]
+pub const B2500000: Speed = c::B2500000;
+
+/// `B3000000`
+#[cfg(not(any(
+    target_os = "dragonfly",
+    target_os = "freebsd",
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "netbsd",
+    target_os = "openbsd",
+)))]
+pub const B3000000: Speed = c::B3000000;
+
+/// `B3500000`
+#[cfg(not(any(
+    target_os = "dragonfly",
+    target_os = "freebsd",
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "netbsd",
+    target_os = "openbsd",
+)))]
+pub const B3500000: Speed = c::B3500000;
+
+/// `B4000000`
+#[cfg(not(any(
+    target_os = "dragonfly",
+    target_os = "freebsd",
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "netbsd",
+    target_os = "openbsd",
+)))]
+pub const B4000000: Speed = c::B4000000;
+
+/// `CSIZE`
+#[cfg(not(any(target_os = "ios", target_os = "macos")))]
+pub const CSIZE: c::c_uint = c::CSIZE;
+
+/// `CS5`
+#[cfg(not(any(target_os = "ios", target_os = "macos")))]
+pub const CS5: c::c_uint = c::CS5;
+
+/// `CS6`
+#[cfg(not(any(target_os = "ios", target_os = "macos")))]
+pub const CS6: c::c_uint = c::CS6;
+
+/// `CS7`
+#[cfg(not(any(target_os = "ios", target_os = "macos")))]
+pub const CS7: c::c_uint = c::CS7;
+
+/// `CS8`
+#[cfg(not(any(target_os = "ios", target_os = "macos")))]
+pub const CS8: c::c_uint = c::CS8;
+
+/// `CSTOPB`
+#[cfg(not(any(target_os = "ios", target_os = "macos")))]
+pub const CSTOPB: c::c_uint = c::CSTOPB;
+
+/// `CREAD`
+#[cfg(not(any(target_os = "ios", target_os = "macos")))]
+pub const CREAD: c::c_uint = c::CREAD;
+
+/// `PARENB`
+#[cfg(not(any(target_os = "ios", target_os = "macos")))]
+pub const PARENB: c::c_uint = c::PARENB;
+
+/// `PARODD`
+#[cfg(not(any(target_os = "ios", target_os = "macos")))]
+pub const PARODD: c::c_uint = c::PARODD;
+
+/// `HUPCL`
+#[cfg(not(any(target_os = "ios", target_os = "macos")))]
+pub const HUPCL: c::c_uint = c::HUPCL;
+
+/// `CLOCAL`
+#[cfg(not(any(target_os = "ios", target_os = "macos")))]
+pub const CLOCAL: c::c_uint = c::CLOCAL;
+
+/// `ISIG`
+#[cfg(not(any(target_os = "ios", target_os = "macos")))]
+pub const ISIG: c::c_uint = c::ISIG;
+
+/// `ICANON`—A flag for the `c_lflag` field of [`Termios`] indicating
+/// canonical mode.
+pub const ICANON: Tcflag = c::ICANON;
+
+/// `ECHO`
+#[cfg(not(any(target_os = "ios", target_os = "macos")))]
+pub const ECHO: c::c_uint = c::ECHO;
+
+/// `ECHOE`
+#[cfg(not(any(target_os = "ios", target_os = "macos")))]
+pub const ECHOE: c::c_uint = c::ECHOE;
+
+/// `ECHOK`
+#[cfg(not(any(target_os = "ios", target_os = "macos")))]
+pub const ECHOK: c::c_uint = c::ECHOK;
+
+/// `ECHONL`
+#[cfg(not(any(target_os = "ios", target_os = "macos")))]
+pub const ECHONL: c::c_uint = c::ECHONL;
+
+/// `NOFLSH`
+#[cfg(not(any(target_os = "ios", target_os = "macos")))]
+pub const NOFLSH: c::c_uint = c::NOFLSH;
+
+/// `TOSTOP`
+#[cfg(not(any(target_os = "ios", target_os = "macos")))]
+pub const TOSTOP: c::c_uint = c::TOSTOP;
+
+/// `IEXTEN`
+#[cfg(not(any(target_os = "ios", target_os = "macos")))]
+pub const IEXTEN: c::c_uint = c::IEXTEN;
+
+/// `EXTA`
+#[cfg(not(any(
+    target_os = "emscripten",
+    target_os = "illumos",
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "redox",
+)))]
+pub const EXTA: c::c_uint = c::EXTA;
+
+/// `EXTB`
+#[cfg(not(any(
+    target_os = "emscripten",
+    target_os = "illumos",
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "redox",
+)))]
+pub const EXTB: c::c_uint = c::EXTB;
+
+/// `CBAUD`
+#[cfg(not(any(
+    target_os = "dragonfly",
+    target_os = "freebsd",
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "netbsd",
+    target_os = "openbsd",
+    target_os = "redox",
+)))]
+pub const CBAUD: c::c_uint = c::CBAUD;
+
+/// `CBAUDEX`
+#[cfg(not(any(
+    target_os = "dragonfly",
+    target_os = "freebsd",
+    target_os = "illumos",
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "netbsd",
+    target_os = "openbsd",
+    target_os = "redox",
+)))]
+pub const CBAUDEX: c::c_uint = c::CBAUDEX;
+
+/// `CIBAUD`
+#[cfg(not(any(
+    target_os = "dragonfly",
+    target_os = "emscripten",
+    target_os = "freebsd",
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "netbsd",
+    target_os = "openbsd",
+    target_os = "redox",
+    target_arch = "powerpc",
+    target_arch = "powerpc64",
+)))]
+pub const CIBAUD: c::tcflag_t = c::CIBAUD;
+
+/// `CIBAUD`
+// TODO: Upstream this.
+#[cfg(any(target_arch = "powerpc", target_arch = "powerpc64"))]
+pub const CIBAUD: c::tcflag_t = 0o77600000;
+
+/// `CMSPAR`
+#[cfg(not(any(
+    target_os = "dragonfly",
+    target_os = "emscripten",
+    target_os = "freebsd",
+    target_os = "illumos",
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "netbsd",
+    target_os = "openbsd",
+    target_os = "redox",
+)))]
+pub const CMSPAR: c::c_uint = c::CMSPAR;
+
+/// `CRTSCTS`
+#[cfg(not(any(target_os = "ios", target_os = "macos", target_os = "redox")))]
+pub const CRTSCTS: c::c_uint = c::CRTSCTS;
+
+/// `XCASE`
+#[cfg(any(target_arch = "s390x", target_os = "haiku"))]
+pub const XCASE: c::c_uint = c::XCASE;
+
+/// `ECHOCTL`
+#[cfg(not(any(target_os = "ios", target_os = "macos", target_os = "redox")))]
+pub const ECHOCTL: c::c_uint = c::ECHOCTL;
+
+/// `ECHOPRT`
+#[cfg(not(any(target_os = "ios", target_os = "macos", target_os = "redox")))]
+pub const ECHOPRT: c::c_uint = c::ECHOPRT;
+
+/// `ECHOKE`
+#[cfg(not(any(target_os = "ios", target_os = "macos", target_os = "redox")))]
+pub const ECHOKE: c::c_uint = c::ECHOKE;
+
+/// `FLUSHO`
+#[cfg(not(any(target_os = "ios", target_os = "macos", target_os = "redox")))]
+pub const FLUSHO: c::c_uint = c::FLUSHO;
+
+/// `PENDIN`
+#[cfg(not(any(target_os = "ios", target_os = "macos", target_os = "redox")))]
+pub const PENDIN: c::c_uint = c::PENDIN;
+
+/// `EXTPROC`
+#[cfg(not(any(target_os = "ios", target_os = "macos", target_os = "redox")))]
+pub const EXTPROC: c::c_uint = c::EXTPROC;
+
+/// `XTABS`
+#[cfg(not(any(
+    target_os = "dragonfly",
+    target_os = "freebsd",
+    target_os = "illumos",
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "netbsd",
+    target_os = "openbsd",
+    target_os = "redox",
+)))]
+pub const XTABS: c::c_uint = c::XTABS;
diff --git a/vendor/rustix/src/imp/libc/thread/mod.rs b/vendor/rustix/src/imp/libc/thread/mod.rs
new file mode 100644
index 000000000..40e0d1135
--- /dev/null
+++ b/vendor/rustix/src/imp/libc/thread/mod.rs
@@ -0,0 +1,2 @@
+#[cfg(not(windows))]
+pub(crate) mod syscalls;
diff --git a/vendor/rustix/src/imp/libc/thread/syscalls.rs b/vendor/rustix/src/imp/libc/thread/syscalls.rs
new file mode 100644
index 000000000..c885372dc
--- /dev/null
+++ b/vendor/rustix/src/imp/libc/thread/syscalls.rs
@@ -0,0 +1,282 @@
+//! libc syscalls supporting `rustix::thread`.
+
+use super::super::c;
+use super::super::conv::ret;
+use super::super::time::types::LibcTimespec;
+use crate::io;
+#[cfg(any(target_os = "android", target_os = "linux"))]
+use crate::process::{Pid, RawNonZeroPid};
+#[cfg(not(target_os = "redox"))]
+use crate::thread::{NanosleepRelativeResult, Timespec};
+use core::mem::MaybeUninit;
+#[cfg(not(any(
+    target_os = "dragonfly",
+    target_os = "freebsd",
+    target_os = "emscripten",
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "openbsd",
+    target_os = "redox",
+    target_os = "wasi",
+)))]
+use {crate::thread::ClockId, core::ptr::null_mut};
+
+#[cfg(all(
+    any(target_arch = "arm", target_arch = "mips", target_arch = "x86"),
+    target_env = "gnu",
+))]
+weak!(fn __clock_nanosleep_time64(c::clockid_t, c::c_int, *const LibcTimespec, *mut LibcTimespec) -> c::c_int);
+#[cfg(all(
+    any(target_arch = "arm", target_arch = "mips", target_arch = "x86"),
+    target_env = "gnu",
+))]
+weak!(fn __nanosleep64(*const LibcTimespec, *mut LibcTimespec) -> c::c_int);
+
+#[cfg(not(any(
+    target_os = "dragonfly",
+    target_os = "emscripten",
+    target_os = "freebsd", // FreeBSD 12 has clock_nanosleep, but libc targets FreeBSD 11.
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "openbsd",
+    target_os = "redox",
+    target_os = "wasi",
+)))]
+#[inline]
+pub(crate) fn clock_nanosleep_relative(id: ClockId, request: &Timespec) -> NanosleepRelativeResult {
+    let mut remain = MaybeUninit::<LibcTimespec>::uninit();
+    let flags = 0;
+
+    // 32-bit gnu version: libc has `clock_nanosleep` but it is not y2038 safe by
+    // default.
+    #[cfg(all(
+        any(target_arch = "arm", target_arch = "mips", target_arch = "x86"),
+        target_env = "gnu",
+    ))]
+    unsafe {
+        if let Some(libc_clock_nanosleep) = __clock_nanosleep_time64.get() {
+            match libc_clock_nanosleep(
+                id as c::clockid_t,
+                flags,
+                &request.clone().into(),
+                remain.as_mut_ptr(),
+            ) {
+                0 => NanosleepRelativeResult::Ok,
+                err if err == io::Errno::INTR.0 => {
+                    NanosleepRelativeResult::Interrupted(remain.assume_init().into())
+                }
+                err => NanosleepRelativeResult::Err(io::Errno(err)),
+            }
+        } else {
+            clock_nanosleep_relative_old(id, request)
+        }
+    }
+
+    // Main version: libc is y2038 safe and has `clock_nanosleep`.
+    #[cfg(not(all(
+        any(target_arch = "arm", target_arch = "mips", target_arch = "x86"),
+        target_env = "gnu",
+    )))]
+    unsafe {
+        match c::clock_nanosleep(id as c::clockid_t, flags, request, remain.as_mut_ptr()) {
+            0 => NanosleepRelativeResult::Ok,
+            err if err == io::Errno::INTR.0 => {
+                NanosleepRelativeResult::Interrupted(remain.assume_init())
+            }
+            err => NanosleepRelativeResult::Err(io::Errno(err)),
+        }
+    }
+}
+
+#[cfg(all(
+    any(target_arch = "arm", target_arch = "mips", target_arch = "x86"),
+    target_env = "gnu",
+))]
+unsafe fn clock_nanosleep_relative_old(id: ClockId, request: &Timespec) -> NanosleepRelativeResult {
+    use core::convert::TryInto;
+    let tv_sec = match request.tv_sec.try_into() {
+        Ok(tv_sec) => tv_sec,
+        Err(_) => return NanosleepRelativeResult::Err(io::Errno::OVERFLOW),
+    };
+    let tv_nsec = match request.tv_nsec.try_into() {
+        Ok(tv_nsec) => tv_nsec,
+        Err(_) => return NanosleepRelativeResult::Err(io::Errno::INVAL),
+    };
+    let old_request = c::timespec { tv_sec, tv_nsec };
+    let mut old_remain = MaybeUninit::<c::timespec>::uninit();
+    let flags = 0;
+
+    match c::clock_nanosleep(
+        id as c::clockid_t,
+        flags,
+        &old_request,
+        old_remain.as_mut_ptr(),
+    ) {
+        0 => NanosleepRelativeResult::Ok,
+        err if err == io::Errno::INTR.0 => {
+            let old_remain = old_remain.assume_init();
+            let remain = Timespec {
+                tv_sec: old_remain.tv_sec.into(),
+                tv_nsec: old_remain.tv_nsec.into(),
+            };
+            NanosleepRelativeResult::Interrupted(remain)
+        }
+        err => NanosleepRelativeResult::Err(io::Errno(err)),
+    }
+}
+
+#[cfg(not(any(
+    target_os = "dragonfly",
+    target_os = "freebsd", // FreeBSD 12 has clock_nanosleep, but libc targets FreeBSD 11.
+    target_os = "emscripten",
+    target_os = "ios",
+    target_os = "macos",
+    target_os = "openbsd",
+    target_os = "redox",
+    target_os = "wasi",
+)))]
+#[inline]
+pub(crate) fn clock_nanosleep_absolute(id: ClockId, request: &Timespec) -> io::Result<()> {
+    let flags = c::TIMER_ABSTIME;
+
+    // 32-bit gnu version: libc has `clock_nanosleep` but it is not y2038 safe by
+    // default.
+    #[cfg(all(
+        any(target_arch = "arm", target_arch = "mips", target_arch = "x86"),
+        target_env = "gnu",
+    ))]
+    {
+        if let Some(libc_clock_nanosleep) = __clock_nanosleep_time64.get() {
+            match unsafe {
+                libc_clock_nanosleep(
+                    id as c::clockid_t,
+                    flags,
+                    &request.clone().into(),
+                    null_mut(),
+                )
+            } {
+                0 => Ok(()),
+                err => Err(io::Errno(err)),
+            }
+        } else {
+            clock_nanosleep_absolute_old(id, request)
+        }
+    }
+
+    // Main version: libc is y2038 safe and has `clock_nanosleep`.
+    #[cfg(not(all(
+        any(target_arch = "arm", target_arch = "mips", target_arch = "x86"),
+        target_env = "gnu",
+    )))]
+    match unsafe { c::clock_nanosleep(id as c::clockid_t, flags, request, null_mut()) } {
+        0 => Ok(()),
+        err => Err(io::Errno(err)),
+    }
+}
+
+#[cfg(all(
+    any(target_arch = "arm", target_arch = "mips", target_arch = "x86"),
+    target_env = "gnu",
+))]
+fn clock_nanosleep_absolute_old(id: ClockId, request: &Timespec) -> io::Result<()> {
+    use core::convert::TryInto;
+
+    let flags = c::TIMER_ABSTIME;
+
+    let old_request = c::timespec {
+        tv_sec: request.tv_sec.try_into().map_err(|_| io::Errno::OVERFLOW)?,
+        tv_nsec: request.tv_nsec.try_into().map_err(|_| io::Errno::INVAL)?,
+    };
+    match unsafe { c::clock_nanosleep(id as c::clockid_t, flags, &old_request, null_mut()) } {
+        0 => Ok(()),
+        err => Err(io::Errno(err)),
+    }
+}
+
+#[cfg(not(target_os = "redox"))]
+#[inline]
+pub(crate) fn nanosleep(request: &Timespec) -> NanosleepRelativeResult {
+    let mut remain = MaybeUninit::<LibcTimespec>::uninit();
+
+    // 32-bit gnu version: libc has `nanosleep` but it is not y2038 safe by
+    // default.
+    #[cfg(all(
+        any(target_arch = "arm", target_arch = "mips", target_arch = "x86"),
+        target_env = "gnu",
+    ))]
+    unsafe {
+        if let Some(libc_nanosleep) = __nanosleep64.get() {
+            match ret(libc_nanosleep(&request.clone().into(), remain.as_mut_ptr())) {
+                Ok(()) => NanosleepRelativeResult::Ok,
+                Err(io::Errno::INTR) => {
+                    NanosleepRelativeResult::Interrupted(remain.assume_init().into())
+                }
+                Err(err) => NanosleepRelativeResult::Err(err),
+            }
+        } else {
+            nanosleep_old(request)
+        }
+    }
+
+    // Main version: libc is y2038 safe and has `nanosleep`.
+    #[cfg(not(all(
+        any(target_arch = "arm", target_arch = "mips", target_arch = "x86"),
+        target_env = "gnu",
+    )))]
+    unsafe {
+        match ret(c::nanosleep(request, remain.as_mut_ptr())) {
+            Ok(()) => NanosleepRelativeResult::Ok,
+            Err(io::Errno::INTR) => NanosleepRelativeResult::Interrupted(remain.assume_init()),
+            Err(err) => NanosleepRelativeResult::Err(err),
+        }
+    }
+}
+
+#[cfg(all(
+    any(target_arch = "arm", target_arch = "mips", target_arch = "x86"),
+    target_env = "gnu",
+))]
+unsafe fn nanosleep_old(request: &Timespec) -> NanosleepRelativeResult {
+    use core::convert::TryInto;
+    let tv_sec = match request.tv_sec.try_into() {
+        Ok(tv_sec) => tv_sec,
+        Err(_) => return NanosleepRelativeResult::Err(io::Errno::OVERFLOW),
+    };
+    let tv_nsec = match request.tv_nsec.try_into() {
+        Ok(tv_nsec) => tv_nsec,
+        Err(_) => return NanosleepRelativeResult::Err(io::Errno::INVAL),
+    };
+    let old_request = c::timespec { tv_sec, tv_nsec };
+    let mut old_remain = MaybeUninit::<c::timespec>::uninit();
+
+    match ret(c::nanosleep(&old_request, old_remain.as_mut_ptr())) {
+        Ok(()) => NanosleepRelativeResult::Ok,
+        Err(io::Errno::INTR) => {
+            let old_remain = old_remain.assume_init();
+            let remain = Timespec {
+                tv_sec: old_remain.tv_sec.into(),
+                tv_nsec: old_remain.tv_nsec.into(),
+            };
+            NanosleepRelativeResult::Interrupted(remain)
+        }
+        Err(err) => NanosleepRelativeResult::Err(err),
+    }
+}
+
+#[cfg(any(target_os = "android", target_os = "linux"))]
+#[inline]
+#[must_use]
+pub(crate) fn gettid() -> Pid {
+    // `gettid` wasn't supported in glibc until 2.30, and musl until 1.2.2,
+    // so use `syscall`.
+    // <https://sourceware.org/bugzilla/show_bug.cgi?id=6399#c62>
+    weak_or_syscall! {
+        fn gettid() via SYS_gettid -> c::pid_t
+    }
+
+    unsafe {
+        let tid = gettid();
+        debug_assert_ne!(tid, 0);
+        Pid::from_raw_nonzero(RawNonZeroPid::new_unchecked(tid))
+    }
+}
diff --git a/vendor/rustix/src/imp/libc/time/mod.rs b/vendor/rustix/src/imp/libc/time/mod.rs
new file mode 100644
index 000000000..bff7fd564
--- /dev/null
+++ b/vendor/rustix/src/imp/libc/time/mod.rs
@@ -0,0 +1,3 @@
+#[cfg(not(windows))]
+pub(crate) mod syscalls;
+pub(crate) mod types;
diff --git a/vendor/rustix/src/imp/libc/time/syscalls.rs b/vendor/rustix/src/imp/libc/time/syscalls.rs
new file mode 100644
index 000000000..2bbaf8ff1
--- /dev/null
+++ b/vendor/rustix/src/imp/libc/time/syscalls.rs
@@ -0,0 +1,414 @@
+//! libc syscalls supporting `rustix::time`.
+
+use super::super::c;
+use super::super::conv::ret;
+#[cfg(feature = "time")]
+#[cfg(any(target_os = "android", target_os = "fuchsia", target_os = "linux"))]
+use super::super::time::types::LibcItimerspec;
+use super::super::time::types::LibcTimespec;
+use super::types::Timespec;
+#[cfg(not(target_os = "wasi"))]
+use super::types::{ClockId, DynamicClockId};
+use crate::io;
+use core::mem::MaybeUninit;
+#[cfg(any(target_os = "android", target_os = "fuchsia", target_os = "linux"))]
+#[cfg(feature = "time")]
+use {
+    super::super::conv::{borrowed_fd, ret_owned_fd},
+    crate::fd::BorrowedFd,
+    crate::io::OwnedFd,
+    crate::time::{Itimerspec, TimerfdClockId, TimerfdFlags, TimerfdTimerFlags},
+};
+
+#[cfg(all(
+    any(target_arch = "arm", target_arch = "mips", target_arch = "x86"),
+    target_env = "gnu",
+))]
+weak!(fn __clock_gettime64(c::clockid_t, *mut LibcTimespec) -> c::c_int);
+#[cfg(all(
+    any(target_arch = "arm", target_arch = "mips", target_arch = "x86"),
+    target_env = "gnu",
+))]
+weak!(fn __clock_getres64(c::clockid_t, *mut LibcTimespec) -> c::c_int);
+#[cfg(all(
+    any(target_arch = "arm", target_arch = "mips", target_arch = "x86"),
+    target_env = "gnu",
+))]
+#[cfg(feature = "time")]
+weak!(fn __timerfd_gettime64(c::c_int, *mut LibcItimerspec) -> c::c_int);
+#[cfg(all(
+    any(target_arch = "arm", target_arch = "mips", target_arch = "x86"),
+    target_env = "gnu",
+))]
+#[cfg(feature = "time")]
+weak!(fn __timerfd_settime64(c::c_int, c::c_int, *const LibcItimerspec, *mut LibcItimerspec) -> c::c_int);
+
+#[cfg(not(any(target_os = "redox", target_os = "wasi")))]
+#[inline]
+#[must_use]
+pub(crate) fn clock_getres(id: ClockId) -> Timespec {
+    let mut timespec = MaybeUninit::<LibcTimespec>::uninit();
+
+    // 32-bit gnu version: libc has `clock_getres` but it is not y2038 safe by
+    // default.
+    #[cfg(all(
+        any(target_arch = "arm", target_arch = "mips", target_arch = "x86"),
+        target_env = "gnu",
+    ))]
+    unsafe {
+        if let Some(libc_clock_getres) = __clock_getres64.get() {
+            ret(libc_clock_getres(id as c::clockid_t, timespec.as_mut_ptr())).unwrap();
+            timespec.assume_init().into()
+        } else {
+            clock_getres_old(id)
+        }
+    }
+
+    // Main version: libc is y2038 safe and has `clock_getres`.
+    #[cfg(not(all(
+        any(target_arch = "arm", target_arch = "mips", target_arch = "x86"),
+        target_env = "gnu",
+    )))]
+    unsafe {
+        let _ = c::clock_getres(id as c::clockid_t, timespec.as_mut_ptr());
+        timespec.assume_init()
+    }
+}
+
+#[cfg(all(
+    any(target_arch = "arm", target_arch = "mips", target_arch = "x86"),
+    target_env = "gnu",
+))]
+#[must_use]
+unsafe fn clock_getres_old(id: ClockId) -> Timespec {
+    let mut old_timespec = MaybeUninit::<c::timespec>::uninit();
+    ret(c::clock_getres(
+        id as c::clockid_t,
+        old_timespec.as_mut_ptr(),
+    ))
+    .unwrap();
+    let old_timespec = old_timespec.assume_init();
+    Timespec {
+        tv_sec: old_timespec.tv_sec.into(),
+        tv_nsec: old_timespec.tv_nsec.into(),
+    }
+}
+
+#[cfg(not(target_os = "wasi"))]
+#[inline]
+#[must_use]
+pub(crate) fn clock_gettime(id: ClockId) -> Timespec {
+    let mut timespec = MaybeUninit::<LibcTimespec>::uninit();
+
+    #[cfg(all(
+        any(target_arch = "arm", target_arch = "mips", target_arch = "x86"),
+        target_env = "gnu",
+    ))]
+    unsafe {
+        if let Some(libc_clock_gettime) = __clock_gettime64.get() {
+            ret(libc_clock_gettime(
+                id as c::clockid_t,
+                timespec.as_mut_ptr(),
+            ))
+            .unwrap();
+            timespec.assume_init().into()
+        } else {
+            clock_gettime_old(id)
+        }
+    }
+
+    // Use `unwrap()` here because `clock_getres` can fail if the clock itself
+    // overflows a number of seconds, but if that happens, the monotonic clocks
+    // can't maintain their invariants, or the realtime clocks aren't properly
+    // configured.
+    #[cfg(not(all(
+        any(target_arch = "arm", target_arch = "mips", target_arch = "x86"),
+        target_env = "gnu",
+    )))]
+    unsafe {
+        ret(c::clock_gettime(id as c::clockid_t, timespec.as_mut_ptr())).unwrap();
+        timespec.assume_init()
+    }
+}
+
+#[cfg(all(
+    any(target_arch = "arm", target_arch = "mips", target_arch = "x86"),
+    target_env = "gnu",
+))]
+#[must_use]
+unsafe fn clock_gettime_old(id: ClockId) -> Timespec {
+    let mut old_timespec = MaybeUninit::<c::timespec>::uninit();
+    ret(c::clock_gettime(
+        id as c::clockid_t,
+        old_timespec.as_mut_ptr(),
+    ))
+    .unwrap();
+    let old_timespec = old_timespec.assume_init();
+    Timespec {
+        tv_sec: old_timespec.tv_sec.into(),
+        tv_nsec: old_timespec.tv_nsec.into(),
+    }
+}
+
+#[cfg(not(target_os = "wasi"))]
+#[inline]
+pub(crate) fn clock_gettime_dynamic(id: DynamicClockId<'_>) -> io::Result<Timespec> {
+    let mut timespec = MaybeUninit::<LibcTimespec>::uninit();
+    unsafe {
+        let id: c::clockid_t = match id {
+            DynamicClockId::Known(id) => id as c::clockid_t,
+
+            #[cfg(any(target_os = "android", target_os = "linux"))]
+            DynamicClockId::Dynamic(fd) => {
+                use crate::fd::AsRawFd;
+                const CLOCKFD: i32 = 3;
+                (!fd.as_raw_fd() << 3) | CLOCKFD
+            }
+
+            #[cfg(not(any(target_os = "android", target_os = "linux")))]
+            DynamicClockId::Dynamic(_fd) => {
+                // Dynamic clocks are not supported on this platform.
+                return Err(io::Errno::INVAL);
+            }
+
+            #[cfg(any(target_os = "android", target_os = "linux"))]
+            DynamicClockId::RealtimeAlarm => c::CLOCK_REALTIME_ALARM,
+
+            #[cfg(any(target_os = "android", target_os = "linux"))]
+            DynamicClockId::Tai => c::CLOCK_TAI,
+
+            #[cfg(any(target_os = "android", target_os = "linux"))]
+            DynamicClockId::Boottime => c::CLOCK_BOOTTIME,
+
+            #[cfg(any(target_os = "android", target_os = "linux"))]
+            DynamicClockId::BoottimeAlarm => c::CLOCK_BOOTTIME_ALARM,
+        };
+
+        #[cfg(all(
+            any(target_arch = "arm", target_arch = "mips", target_arch = "x86"),
+            target_env = "gnu",
+        ))]
+        {
+            if let Some(libc_clock_gettime) = __clock_gettime64.get() {
+                ret(libc_clock_gettime(
+                    id as c::clockid_t,
+                    timespec.as_mut_ptr(),
+                ))?;
+
+                Ok(timespec.assume_init().into())
+            } else {
+                clock_gettime_dynamic_old(id)
+            }
+        }
+
+        #[cfg(not(all(
+            any(target_arch = "arm", target_arch = "mips", target_arch = "x86"),
+            target_env = "gnu",
+        )))]
+        {
+            ret(c::clock_gettime(id as c::clockid_t, timespec.as_mut_ptr()))?;
+
+            Ok(timespec.assume_init())
+        }
+    }
+}
+
+#[cfg(all(
+    any(target_arch = "arm", target_arch = "mips", target_arch = "x86"),
+    target_env = "gnu",
+))]
+#[inline]
+unsafe fn clock_gettime_dynamic_old(id: c::clockid_t) -> io::Result<Timespec> {
+    let mut old_timespec = MaybeUninit::<c::timespec>::uninit();
+
+    ret(c::clock_gettime(
+        id as c::clockid_t,
+        old_timespec.as_mut_ptr(),
+    ))?;
+
+    let old_timespec = old_timespec.assume_init();
+    Ok(Timespec {
+        tv_sec: old_timespec.tv_sec.into(),
+        tv_nsec: old_timespec.tv_nsec.into(),
+    })
+}
+
+#[cfg(any(target_os = "android", target_os = "fuchsia", target_os = "linux"))]
+#[cfg(feature = "time")]
+pub(crate) fn timerfd_create(id: TimerfdClockId, flags: TimerfdFlags) -> io::Result<OwnedFd> {
+    unsafe { ret_owned_fd(c::timerfd_create(id as c::clockid_t, flags.bits())) }
+}
+
+#[cfg(any(target_os = "android", target_os = "fuchsia", target_os = "linux"))]
+#[cfg(feature = "time")]
+pub(crate) fn timerfd_settime(
+    fd: BorrowedFd<'_>,
+    flags: TimerfdTimerFlags,
+    new_value: &Itimerspec,
+) -> io::Result<Itimerspec> {
+    let mut result = MaybeUninit::<LibcItimerspec>::uninit();
+
+    #[cfg(all(
+        any(target_arch = "arm", target_arch = "mips", target_arch = "x86"),
+        target_env = "gnu",
+    ))]
+    unsafe {
+        if let Some(libc_timerfd_settime) = __timerfd_settime64.get() {
+            ret(libc_timerfd_settime(
+                borrowed_fd(fd),
+                flags.bits(),
+                &new_value.clone().into(),
+                result.as_mut_ptr(),
+            ))
+            .map(|()| result.assume_init().into())
+        } else {
+            timerfd_settime_old(fd, flags, new_value)
+        }
+    }
+
+    #[cfg(not(all(
+        any(target_arch = "arm", target_arch = "mips", target_arch = "x86"),
+        target_env = "gnu",
+    )))]
+    unsafe {
+        ret(c::timerfd_settime(
+            borrowed_fd(fd),
+            flags.bits(),
+            new_value,
+            result.as_mut_ptr(),
+        ))
+        .map(|()| result.assume_init())
+    }
+}
+
+#[cfg(any(target_os = "android", target_os = "fuchsia", target_os = "linux"))]
+#[cfg(all(
+    any(target_arch = "arm", target_arch = "mips", target_arch = "x86"),
+    target_env = "gnu",
+))]
+#[cfg(feature = "time")]
+unsafe fn timerfd_settime_old(
+    fd: BorrowedFd<'_>,
+    flags: TimerfdTimerFlags,
+    new_value: &Itimerspec,
+) -> io::Result<Itimerspec> {
+    use core::convert::TryInto;
+
+    let mut old_result = MaybeUninit::<c::itimerspec>::uninit();
+
+    // Convert `new_value` to the old `itimerspec` format.
+    let old_new_value = c::itimerspec {
+        it_interval: c::timespec {
+            tv_sec: new_value
+                .it_interval
+                .tv_sec
+                .try_into()
+                .map_err(|_| io::Errno::OVERFLOW)?,
+            tv_nsec: new_value
+                .it_interval
+                .tv_nsec
+                .try_into()
+                .map_err(|_| io::Errno::INVAL)?,
+        },
+        it_value: c::timespec {
+            tv_sec: new_value
+                .it_value
+                .tv_sec
+                .try_into()
+                .map_err(|_| io::Errno::OVERFLOW)?,
+            tv_nsec: new_value
+                .it_value
+                .tv_nsec
+                .try_into()
+                .map_err(|_| io::Errno::INVAL)?,
+        },
+    };
+
+    ret(c::timerfd_settime(
+        borrowed_fd(fd),
+        flags.bits(),
+        &old_new_value,
+        old_result.as_mut_ptr(),
+    ))?;
+
+    let old_result = old_result.assume_init();
+    Ok(Itimerspec {
+        it_interval: Timespec {
+            tv_sec: old_result
+                .it_interval
+                .tv_sec
+                .try_into()
+                .map_err(|_| io::Errno::OVERFLOW)?,
+            tv_nsec: old_result.it_interval.tv_nsec as _,
+        },
+        it_value: Timespec {
+            tv_sec: old_result
+                .it_interval
+                .tv_sec
+                .try_into()
+                .map_err(|_| io::Errno::OVERFLOW)?,
+            tv_nsec: old_result.it_interval.tv_nsec as _,
+        },
+    })
+}
+
+#[cfg(any(target_os = "android", target_os = "fuchsia", target_os = "linux"))]
+#[cfg(feature = "time")]
+pub(crate) fn timerfd_gettime(fd: BorrowedFd<'_>) -> io::Result<Itimerspec> {
+    let mut result = MaybeUninit::<LibcItimerspec>::uninit();
+
+    #[cfg(all(
+        any(target_arch = "arm", target_arch = "mips", target_arch = "x86"),
+        target_env = "gnu",
+    ))]
+    unsafe {
+        if let Some(libc_timerfd_gettime) = __timerfd_gettime64.get() {
+            ret(libc_timerfd_gettime(borrowed_fd(fd), result.as_mut_ptr()))
+                .map(|()| result.assume_init().into())
+        } else {
+            timerfd_gettime_old(fd)
+        }
+    }
+
+    #[cfg(not(all(
+        any(target_arch = "arm", target_arch = "mips", target_arch = "x86"),
+        target_env = "gnu",
+    )))]
+    unsafe {
+        ret(c::timerfd_gettime(borrowed_fd(fd), result.as_mut_ptr())).map(|()| result.assume_init())
+    }
+}
+
+#[cfg(any(target_os = "android", target_os = "fuchsia", target_os = "linux"))]
+#[cfg(all(
+    any(target_arch = "arm", target_arch = "mips", target_arch = "x86"),
+    target_env = "gnu",
+))]
+#[cfg(feature = "time")]
+unsafe fn timerfd_gettime_old(fd: BorrowedFd<'_>) -> io::Result<Itimerspec> {
+    use core::convert::TryInto;
+
+    let mut old_result = MaybeUninit::<c::itimerspec>::uninit();
+
+    ret(c::timerfd_gettime(borrowed_fd(fd), old_result.as_mut_ptr()))?;
+
+    let old_result = old_result.assume_init();
+    Ok(Itimerspec {
+        it_interval: Timespec {
+            tv_sec: old_result
+                .it_interval
+                .tv_sec
+                .try_into()
+                .map_err(|_| io::Errno::OVERFLOW)?,
+            tv_nsec: old_result.it_interval.tv_nsec as _,
+        },
+        it_value: Timespec {
+            tv_sec: old_result
+                .it_interval
+                .tv_sec
+                .try_into()
+                .map_err(|_| io::Errno::OVERFLOW)?,
+            tv_nsec: old_result.it_interval.tv_nsec as _,
+        },
+    })
+}
diff --git a/vendor/rustix/src/imp/libc/time/types.rs b/vendor/rustix/src/imp/libc/time/types.rs
new file mode 100644
index 000000000..4aa2b22e5
--- /dev/null
+++ b/vendor/rustix/src/imp/libc/time/types.rs
@@ -0,0 +1,362 @@
+use super::super::c;
+#[cfg(not(target_os = "wasi"))]
+use crate::fd::BorrowedFd;
+#[cfg(any(target_os = "android", target_os = "fuchsia", target_os = "linux"))]
+use bitflags::bitflags;
+
+/// `struct timespec`
+#[cfg(not(all(
+    any(target_arch = "arm", target_arch = "mips", target_arch = "x86"),
+    target_env = "gnu",
+)))]
+pub type Timespec = c::timespec;
+
+/// `struct timespec`
+#[cfg(all(
+    any(target_arch = "arm", target_arch = "mips", target_arch = "x86"),
+    target_env = "gnu",
+))]
+#[derive(Debug, Clone)]
+#[repr(C)]
+pub struct Timespec {
+    /// Seconds.
+    pub tv_sec: Secs,
+
+    /// Nanoseconds. Must be less than 1_000_000_000.
+    pub tv_nsec: Nsecs,
+}
+
+/// A type for the `tv_sec` field of [`Timespec`].
+#[cfg(not(all(
+    any(target_arch = "arm", target_arch = "mips", target_arch = "x86"),
+    target_env = "gnu",
+)))]
+#[allow(deprecated)]
+pub type Secs = c::time_t;
+
+/// A type for the `tv_sec` field of [`Timespec`].
+#[cfg(all(
+    any(target_arch = "arm", target_arch = "mips", target_arch = "x86"),
+    target_env = "gnu",
+))]
+pub type Secs = i64;
+
+/// A type for the `tv_nsec` field of [`Timespec`].
+#[cfg(all(target_arch = "x86_64", target_pointer_width = "32"))]
+pub type Nsecs = i64;
+
+/// A type for the `tv_nsec` field of [`Timespec`].
+#[cfg(not(all(target_arch = "x86_64", target_pointer_width = "32")))]
+pub type Nsecs = c::c_long;
+
+/// On most platforms, `LibcTimespec` is just `Timespec`.
+#[cfg(not(all(
+    any(target_arch = "arm", target_arch = "mips", target_arch = "x86"),
+    target_env = "gnu",
+)))]
+pub(crate) type LibcTimespec = Timespec;
+
+/// On 32-bit glibc platforms, `timespec` has anonymous padding fields, which
+/// Rust doesn't support yet (see `unnamed_fields`), so we define our own
+/// struct with explicit padding, with bidirectional `From` impls.
+#[cfg(all(
+    any(target_arch = "arm", target_arch = "mips", target_arch = "x86"),
+    target_env = "gnu",
+))]
+#[repr(C)]
+#[derive(Debug, Clone)]
+pub(crate) struct LibcTimespec {
+    pub(crate) tv_sec: Secs,
+
+    #[cfg(target_endian = "big")]
+    padding: core::mem::MaybeUninit<u32>,
+
+    pub(crate) tv_nsec: Nsecs,
+
+    #[cfg(target_endian = "little")]
+    padding: core::mem::MaybeUninit<u32>,
+}
+
+#[cfg(all(
+    any(target_arch = "arm", target_arch = "mips", target_arch = "x86"),
+    target_env = "gnu",
+))]
+impl From<LibcTimespec> for Timespec {
+    #[inline]
+    fn from(t: LibcTimespec) -> Self {
+        Self {
+            tv_sec: t.tv_sec,
+            tv_nsec: t.tv_nsec,
+        }
+    }
+}
+
+#[cfg(all(
+    any(target_arch = "arm", target_arch = "mips", target_arch = "x86"),
+    target_env = "gnu",
+))]
+impl From<Timespec> for LibcTimespec {
+    #[inline]
+    fn from(t: Timespec) -> Self {
+        Self {
+            tv_sec: t.tv_sec,
+            tv_nsec: t.tv_nsec,
+            padding: core::mem::MaybeUninit::uninit(),
+        }
+    }
+}
+
+/// `CLOCK_*` constants for use with [`clock_gettime`].
+///
+/// These constants are always supported at runtime so `clock_gettime` never
+/// has to fail with `INVAL` due to an unsupported clock. See
+/// [`DynamicClockId`] for a greater set of clocks, with the caveat that not
+/// all of them are always supported.
+///
+/// [`clock_gettime`]: crate::time::clock_gettime
+#[cfg(not(any(target_os = "ios", target_os = "macos", target_os = "wasi")))]
+#[derive(Debug, Copy, Clone, Eq, PartialEq, Hash)]
+#[cfg_attr(not(target_os = "dragonfly"), repr(i32))]
+#[cfg_attr(target_os = "dragonfly", repr(u64))]
+#[non_exhaustive]
+pub enum ClockId {
+    /// `CLOCK_REALTIME`
+    Realtime = c::CLOCK_REALTIME,
+
+    /// `CLOCK_MONOTONIC`
+    Monotonic = c::CLOCK_MONOTONIC,
+
+    /// `CLOCK_PROCESS_CPUTIME_ID`
+    #[cfg(not(any(
+        target_os = "illumos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+        target_os = "redox",
+    )))]
+    ProcessCPUTime = c::CLOCK_PROCESS_CPUTIME_ID,
+
+    /// `CLOCK_THREAD_CPUTIME_ID`
+    #[cfg(not(any(
+        target_os = "illumos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+        target_os = "redox",
+    )))]
+    ThreadCPUTime = c::CLOCK_THREAD_CPUTIME_ID,
+
+    /// `CLOCK_REALTIME_COARSE`
+    #[cfg(any(target_os = "android", target_os = "linux"))]
+    RealtimeCoarse = c::CLOCK_REALTIME_COARSE,
+
+    /// `CLOCK_MONOTONIC_COARSE`
+    #[cfg(any(target_os = "android", target_os = "linux"))]
+    MonotonicCoarse = c::CLOCK_MONOTONIC_COARSE,
+
+    /// `CLOCK_MONOTONIC_RAW`
+    #[cfg(any(target_os = "android", target_os = "linux"))]
+    MonotonicRaw = c::CLOCK_MONOTONIC_RAW,
+}
+
+/// `CLOCK_*` constants for use with [`clock_gettime`].
+///
+/// These constants are always supported at runtime so `clock_gettime` never
+/// has to fail with `INVAL` due to an unsupported clock. See
+/// [`DynamicClockId`] for a greater set of clocks, with the caveat that not
+/// all of them are always supported.
+#[cfg(any(target_os = "ios", target_os = "macos"))]
+#[derive(Debug, Copy, Clone, Eq, PartialEq, Hash)]
+#[repr(u32)]
+#[non_exhaustive]
+pub enum ClockId {
+    /// `CLOCK_REALTIME`
+    Realtime = c::CLOCK_REALTIME,
+
+    /// `CLOCK_MONOTONIC`
+    Monotonic = c::CLOCK_MONOTONIC,
+
+    /// `CLOCK_PROCESS_CPUTIME_ID`
+    ProcessCPUTime = c::CLOCK_PROCESS_CPUTIME_ID,
+
+    /// `CLOCK_THREAD_CPUTIME_ID`
+    ThreadCPUTime = c::CLOCK_THREAD_CPUTIME_ID,
+}
+
+/// `CLOCK_*` constants for use with [`clock_gettime_dynamic`].
+///
+/// These constants may be unsupported at runtime, depending on the OS version,
+/// and `clock_gettime_dynamic` may fail with `INVAL`. See [`ClockId`] for
+/// clocks which are always supported at runtime.
+///
+/// [`clock_gettime_dynamic`]: crate::time::clock_gettime_dynamic
+#[cfg(not(target_os = "wasi"))]
+#[derive(Debug, Copy, Clone)]
+#[non_exhaustive]
+pub enum DynamicClockId<'a> {
+    /// `ClockId` values that are always supported at runtime.
+    Known(ClockId),
+
+    /// Linux dynamic clocks.
+    Dynamic(BorrowedFd<'a>),
+
+    /// `CLOCK_REALTIME_ALARM`, available on Linux >= 3.0
+    #[cfg(any(target_os = "android", target_os = "linux"))]
+    RealtimeAlarm,
+
+    /// `CLOCK_TAI`, available on Linux >= 3.10
+    #[cfg(any(target_os = "android", target_os = "linux"))]
+    Tai,
+
+    /// `CLOCK_BOOTTIME`, available on Linux >= 2.6.39
+    #[cfg(any(target_os = "android", target_os = "linux"))]
+    Boottime,
+
+    /// `CLOCK_BOOTTIME_ALARM`, available on Linux >= 2.6.39
+    #[cfg(any(target_os = "android", target_os = "linux"))]
+    BoottimeAlarm,
+}
+
+/// `struct itimerspec`
+#[cfg(any(target_os = "android", target_os = "fuchsia", target_os = "linux"))]
+#[cfg(not(all(
+    any(target_arch = "arm", target_arch = "mips", target_arch = "x86"),
+    target_env = "gnu",
+)))]
+pub type Itimerspec = c::itimerspec;
+
+/// `struct itimerspec`
+#[cfg(any(target_os = "android", target_os = "fuchsia", target_os = "linux"))]
+#[cfg(all(
+    any(target_arch = "arm", target_arch = "mips", target_arch = "x86"),
+    target_env = "gnu",
+))]
+#[allow(missing_docs)]
+#[repr(C)]
+#[derive(Debug, Clone)]
+pub struct Itimerspec {
+    pub it_interval: Timespec,
+    pub it_value: Timespec,
+}
+
+/// On most platforms, `LibcItimerspec` is just `Itimerspec`.
+#[cfg(any(target_os = "android", target_os = "fuchsia", target_os = "linux"))]
+#[cfg(not(all(
+    any(target_arch = "arm", target_arch = "mips", target_arch = "x86"),
+    target_env = "gnu",
+)))]
+pub(crate) type LibcItimerspec = Itimerspec;
+
+/// On 32-bit glibc platforms, `LibcTimespec` differs from `Timespec`, so we
+/// define our own struct, with bidirectional `From` impls.
+#[cfg(any(target_os = "android", target_os = "fuchsia", target_os = "linux"))]
+#[cfg(all(
+    any(target_arch = "arm", target_arch = "mips", target_arch = "x86"),
+    target_env = "gnu",
+))]
+#[repr(C)]
+#[derive(Debug, Clone)]
+pub(crate) struct LibcItimerspec {
+    pub it_interval: LibcTimespec,
+    pub it_value: LibcTimespec,
+}
+
+#[cfg(any(target_os = "android", target_os = "fuchsia", target_os = "linux"))]
+#[cfg(all(
+    any(target_arch = "arm", target_arch = "mips", target_arch = "x86"),
+    target_env = "gnu",
+))]
+impl From<LibcItimerspec> for Itimerspec {
+    #[inline]
+    fn from(t: LibcItimerspec) -> Self {
+        Self {
+            it_interval: t.it_interval.into(),
+            it_value: t.it_value.into(),
+        }
+    }
+}
+
+#[cfg(any(target_os = "android", target_os = "fuchsia", target_os = "linux"))]
+#[cfg(all(
+    any(target_arch = "arm", target_arch = "mips", target_arch = "x86"),
+    target_env = "gnu",
+))]
+impl From<Itimerspec> for LibcItimerspec {
+    #[inline]
+    fn from(t: Itimerspec) -> Self {
+        Self {
+            it_interval: t.it_interval.into(),
+            it_value: t.it_value.into(),
+        }
+    }
+}
+
+#[cfg(any(target_os = "android", target_os = "fuchsia", target_os = "linux"))]
+bitflags! {
+    /// `TFD_*` flags for use with [`timerfd_create`].
+    pub struct TimerfdFlags: c::c_int {
+        /// `TFD_NONBLOCK`
+        const NONBLOCK = c::TFD_NONBLOCK;
+
+        /// `TFD_CLOEXEC`
+        const CLOEXEC = c::TFD_CLOEXEC;
+    }
+}
+
+#[cfg(any(target_os = "android", target_os = "fuchsia", target_os = "linux"))]
+bitflags! {
+    /// `TFD_TIMER_*` flags for use with [`timerfd_settime`].
+    pub struct TimerfdTimerFlags: c::c_int {
+        /// `TFD_TIMER_ABSTIME`
+        const ABSTIME = c::TFD_TIMER_ABSTIME;
+
+        /// `TFD_TIMER_CANCEL_ON_SET`
+        #[cfg(any(target_os = "android", target_os = "linux"))]
+        const CANCEL_ON_SET = 2; // TODO: upstream TFD_TIMER_CANCEL_ON_SET
+    }
+}
+
+/// `CLOCK_*` constants for use with [`timerfd_create`].
+///
+/// [`timerfd_create`]: crate::time::timerfd_create
+#[cfg(any(target_os = "android", target_os = "fuchsia", target_os = "linux"))]
+#[derive(Debug, Copy, Clone, Eq, PartialEq, Hash)]
+#[repr(i32)]
+#[non_exhaustive]
+pub enum TimerfdClockId {
+    /// `CLOCK_REALTIME`—A clock that tells the "real" time.
+    ///
+    /// This is a clock that tells the amount of time elapsed since the
+    /// Unix epoch, 1970-01-01T00:00:00Z. The clock is externally settable, so
+    /// it is not monotonic. Successive reads may see decreasing times, so it
+    /// isn't reliable for measuring durations.
+    Realtime = c::CLOCK_REALTIME,
+
+    /// `CLOCK_MONOTONIC`—A clock that tells an abstract time.
+    ///
+    /// Unlike `Realtime`, this clock is not based on a fixed known epoch, so
+    /// individual times aren't meaningful. However, since it isn't settable,
+    /// it is reliable for measuring durations.
+    ///
+    /// This clock does not advance while the system is suspended; see
+    /// `Boottime` for a clock that does.
+    Monotonic = c::CLOCK_MONOTONIC,
+
+    /// `CLOCK_BOOTTIME`—Like `Monotonic`, but advances while suspended.
+    ///
+    /// This clock is similar to `Monotonic`, but does advance while the system
+    /// is suspended.
+    Boottime = c::CLOCK_BOOTTIME,
+
+    /// `CLOCK_REALTIME_ALARM`—Like `Realtime`, but wakes a suspended system.
+    ///
+    /// This clock is like `Realtime`, but can wake up a suspended system.
+    ///
+    /// Use of this clock requires the `CAP_WAKE_ALARM` Linux capability.
+    RealtimeAlarm = c::CLOCK_REALTIME_ALARM,
+
+    /// `CLOCK_BOOTTIME_ALARM`—Like `Boottime`, but wakes a suspended system.
+    ///
+    /// This clock is like `Boottime`, but can wake up a suspended system.
+    ///
+    /// Use of this clock requires the `CAP_WAKE_ALARM` Linux capability.
+    BoottimeAlarm = c::CLOCK_BOOTTIME_ALARM,
+}
diff --git a/vendor/rustix/src/imp/libc/weak.rs b/vendor/rustix/src/imp/libc/weak.rs
new file mode 100644
index 000000000..893403b1c
--- /dev/null
+++ b/vendor/rustix/src/imp/libc/weak.rs
@@ -0,0 +1,226 @@
+// Implementation derived from `weak` in Rust's
+// library/std/src/sys/unix/weak.rs at revision
+// fd0cb0cdc21dd9c06025277d772108f8d42cb25f.
+
+//! Support for "weak linkage" to symbols on Unix
+//!
+//! Some I/O operations we do in libstd require newer versions of OSes but we
+//! need to maintain binary compatibility with older releases for now. In order
+//! to use the new functionality when available we use this module for
+//! detection.
+//!
+//! One option to use here is weak linkage, but that is unfortunately only
+//! really workable on Linux. Hence, use dlsym to get the symbol value at
+//! runtime. This is also done for compatibility with older versions of glibc,
+//! and to avoid creating dependencies on `GLIBC_PRIVATE` symbols. It assumes
+//! that we've been dynamically linked to the library the symbol comes from,
+//! but that is currently always the case for things like libpthread/libc.
+//!
+//! A long time ago this used weak linkage for the `__pthread_get_minstack`
+//! symbol, but that caused Debian to detect an unnecessarily strict versioned
+//! dependency on libc6 (#23628).
+
+// There are a variety of `#[cfg]`s controlling which targets are involved in
+// each instance of `weak!` and `syscall!`. Rather than trying to unify all of
+// that, we'll just allow that some unix targets don't use this module at all.
+#![allow(dead_code, unused_macros)]
+#![allow(clippy::doc_markdown)]
+
+use crate::ffi::CStr;
+use core::ffi::c_void;
+use core::ptr::null_mut;
+use core::sync::atomic::{self, AtomicPtr, Ordering};
+use core::{marker, mem};
+
+const NULL: *mut c_void = null_mut();
+const INVALID: *mut c_void = 1 as *mut c_void;
+
+macro_rules! weak {
+    ($vis:vis fn $name:ident($($t:ty),*) -> $ret:ty) => (
+        #[allow(non_upper_case_globals)]
+        $vis static $name: $crate::imp::weak::Weak<unsafe extern fn($($t),*) -> $ret> =
+            $crate::imp::weak::Weak::new(concat!(stringify!($name), '\0'));
+    )
+}
+
+pub(crate) struct Weak<F> {
+    name: &'static str,
+    addr: AtomicPtr<c_void>,
+    _marker: marker::PhantomData<F>,
+}
+
+impl<F> Weak<F> {
+    pub(crate) const fn new(name: &'static str) -> Self {
+        Self {
+            name,
+            addr: AtomicPtr::new(INVALID),
+            _marker: marker::PhantomData,
+        }
+    }
+
+    pub(crate) fn get(&self) -> Option<F> {
+        assert_eq!(mem::size_of::<F>(), mem::size_of::<usize>());
+        unsafe {
+            // Relaxed is fine here because we fence before reading through the
+            // pointer (see the comment below).
+            match self.addr.load(Ordering::Relaxed) {
+                INVALID => self.initialize(),
+                NULL => None,
+                addr => {
+                    let func = mem::transmute_copy::<*mut c_void, F>(&addr);
+                    // The caller is presumably going to read through this value
+                    // (by calling the function we've dlsymed). This means we'd
+                    // need to have loaded it with at least C11's consume
+                    // ordering in order to be guaranteed that the data we read
+                    // from the pointer isn't from before the pointer was
+                    // stored. Rust has no equivalent to memory_order_consume,
+                    // so we use an acquire fence (sorry, ARM).
+                    //
+                    // Now, in practice this likely isn't needed even on CPUs
+                    // where relaxed and consume mean different things. The
+                    // symbols we're loading are probably present (or not) at
+                    // init, and even if they aren't the runtime dynamic loader
+                    // is extremely likely have sufficient barriers internally
+                    // (possibly implicitly, for example the ones provided by
+                    // invoking `mprotect`).
+                    //
+                    // That said, none of that's *guaranteed*, and so we fence.
+                    atomic::fence(Ordering::Acquire);
+                    Some(func)
+                }
+            }
+        }
+    }
+
+    // Cold because it should only happen during first-time initialization.
+    #[cold]
+    unsafe fn initialize(&self) -> Option<F> {
+        let val = fetch(self.name);
+        // This synchronizes with the acquire fence in `get`.
+        self.addr.store(val, Ordering::Release);
+
+        match val {
+            NULL => None,
+            addr => Some(mem::transmute_copy::<*mut c_void, F>(&addr)),
+        }
+    }
+}
+
+unsafe fn fetch(name: &str) -> *mut c_void {
+    let name = match CStr::from_bytes_with_nul(name.as_bytes()) {
+        Ok(c_str) => c_str,
+        Err(..) => return null_mut(),
+    };
+    libc::dlsym(libc::RTLD_DEFAULT, name.as_ptr().cast())
+}
+
+#[cfg(not(any(target_os = "android", target_os = "linux")))]
+macro_rules! syscall {
+    (fn $name:ident($($arg_name:ident: $t:ty),*) via $_sys_name:ident -> $ret:ty) => (
+        unsafe fn $name($($arg_name: $t),*) -> $ret {
+            weak! { fn $name($($t),*) -> $ret }
+
+            if let Some(fun) = $name.get() {
+                fun($($arg_name),*)
+            } else {
+                libc_errno::set_errno(libc_errno::Errno(libc::ENOSYS));
+                -1
+            }
+        }
+    )
+}
+
+#[cfg(any(target_os = "android", target_os = "linux"))]
+macro_rules! syscall {
+    (fn $name:ident($($arg_name:ident: $t:ty),*) via $sys_name:ident -> $ret:ty) => (
+        unsafe fn $name($($arg_name:$t),*) -> $ret {
+            // This looks like a hack, but concat_idents only accepts idents
+            // (not paths).
+            use libc::*;
+
+            trait AsSyscallArg {
+                type SyscallArgType;
+                fn into_syscall_arg(self) -> Self::SyscallArgType;
+            }
+
+            // Pass pointer types as pointers, to preserve provenance.
+            impl<T> AsSyscallArg for *mut T {
+                type SyscallArgType = *mut T;
+                fn into_syscall_arg(self) -> Self::SyscallArgType { self }
+            }
+            impl<T> AsSyscallArg for *const T {
+                type SyscallArgType = *const T;
+                fn into_syscall_arg(self) -> Self::SyscallArgType { self }
+            }
+
+            // Pass `BorrowedFd` values as the integer value.
+            impl AsSyscallArg for $crate::fd::BorrowedFd<'_> {
+                type SyscallArgType = c::c_long;
+                fn into_syscall_arg(self) -> Self::SyscallArgType {
+                    $crate::fd::AsRawFd::as_raw_fd(&self) as _
+                }
+            }
+
+            // Coerce integer values into `c_long`.
+            impl AsSyscallArg for i32 {
+                type SyscallArgType = c::c_long;
+                fn into_syscall_arg(self) -> Self::SyscallArgType { self as _ }
+            }
+            impl AsSyscallArg for u32 {
+                type SyscallArgType = c::c_long;
+                fn into_syscall_arg(self) -> Self::SyscallArgType { self as _ }
+            }
+            impl AsSyscallArg for usize {
+                type SyscallArgType = c::c_long;
+                fn into_syscall_arg(self) -> Self::SyscallArgType { self as _ }
+            }
+
+            // `concat_idents is unstable, so we take an extra `sys_name`
+            // parameter and have our users do the concat for us for now.
+            /*
+            syscall(
+                concat_idents!(SYS_, $name),
+                $($arg_name.into_syscall_arg()),*
+            ) as $ret
+            */
+
+            syscall($sys_name, $($arg_name.into_syscall_arg()),*) as $ret
+        }
+    )
+}
+
+macro_rules! weakcall {
+    ($vis:vis fn $name:ident($($arg_name:ident: $t:ty),*) -> $ret:ty) => (
+        $vis unsafe fn $name($($arg_name: $t),*) -> $ret {
+            weak! { fn $name($($t),*) -> $ret }
+
+            // Use a weak symbol from libc when possible, allowing `LD_PRELOAD`
+            // interposition, but if it's not found just fail.
+            if let Some(fun) = $name.get() {
+                fun($($arg_name),*)
+            } else {
+                libc_errno::set_errno(libc_errno::Errno(libc::ENOSYS));
+                -1
+            }
+        }
+    )
+}
+
+/// A combination of `weakcall` and `syscall`. Use the libc function if it's
+/// available, and fall back to `libc::syscall` otherwise.
+macro_rules! weak_or_syscall {
+    ($vis:vis fn $name:ident($($arg_name:ident: $t:ty),*) via $sys_name:ident -> $ret:ty) => (
+        $vis unsafe fn $name($($arg_name: $t),*) -> $ret {
+            weak! { fn $name($($t),*) -> $ret }
+
+            // Use a weak symbol from libc when possible, allowing `LD_PRELOAD`
+            // interposition, but if it's not found just fail.
+            if let Some(fun) = $name.get() {
+                fun($($arg_name),*)
+            } else {
+                syscall! { fn $name($($arg_name: $t),*) via $sys_name -> $ret }
+                $name($($arg_name),*)
+            }
+        }
+    )
+}
diff --git a/vendor/rustix/src/imp/libc/winsock_c.rs b/vendor/rustix/src/imp/libc/winsock_c.rs
new file mode 100644
index 000000000..1fbce416f
--- /dev/null
+++ b/vendor/rustix/src/imp/libc/winsock_c.rs
@@ -0,0 +1,82 @@
+//! Adapt the Winsock2 API to resemble a POSIX-style libc API.
+
+#![allow(unused_imports)]
+#![allow(non_camel_case_types)]
+
+use windows_sys::Win32::Networking::WinSock;
+
+pub(crate) use libc::{
+    c_char, c_int, c_long, c_longlong, c_schar, c_short, c_uchar, c_uint, c_ulong, c_ulonglong,
+    c_ushort, c_void, ssize_t,
+};
+pub(crate) type socklen_t = i32;
+
+// windows-sys declares these constants as unsigned. For better compatibility
+// with Unix-family APIs, redeclare them as signed. Filed upstream:
+// <https://github.com/microsoft/windows-rs/issues/1718>
+pub(crate) const AF_INET: i32 = WinSock::AF_INET as _;
+pub(crate) const AF_INET6: i32 = WinSock::AF_INET6 as _;
+pub(crate) const AF_UNSPEC: i32 = WinSock::AF_UNSPEC as _;
+pub(crate) const SO_TYPE: i32 = WinSock::SO_TYPE as _;
+pub(crate) const SO_REUSEADDR: i32 = WinSock::SO_REUSEADDR as _;
+pub(crate) const SO_BROADCAST: i32 = WinSock::SO_BROADCAST as _;
+pub(crate) const SO_LINGER: i32 = WinSock::SO_LINGER as _;
+pub(crate) const SOL_SOCKET: i32 = WinSock::SOL_SOCKET as _;
+pub(crate) const SO_RCVTIMEO: i32 = WinSock::SO_RCVTIMEO as _;
+pub(crate) const SO_SNDTIMEO: i32 = WinSock::SO_SNDTIMEO as _;
+pub(crate) const IP_TTL: i32 = WinSock::IP_TTL as _;
+pub(crate) const TCP_NODELAY: i32 = WinSock::TCP_NODELAY as _;
+pub(crate) const IP_ADD_MEMBERSHIP: i32 = WinSock::IP_ADD_MEMBERSHIP as _;
+pub(crate) const IP_DROP_MEMBERSHIP: i32 = WinSock::IP_DROP_MEMBERSHIP as _;
+pub(crate) const IP_MULTICAST_TTL: i32 = WinSock::IP_MULTICAST_TTL as _;
+pub(crate) const IP_MULTICAST_LOOP: i32 = WinSock::IP_MULTICAST_LOOP as _;
+pub(crate) const IPV6_ADD_MEMBERSHIP: i32 = WinSock::IPV6_ADD_MEMBERSHIP as _;
+pub(crate) const IPV6_DROP_MEMBERSHIP: i32 = WinSock::IPV6_DROP_MEMBERSHIP as _;
+pub(crate) const IPV6_MULTICAST_LOOP: i32 = WinSock::IPV6_MULTICAST_LOOP as _;
+pub(crate) const IPV6_V6ONLY: i32 = WinSock::IPV6_V6ONLY as _;
+pub(crate) const POLLERR: i16 = WinSock::POLLERR as _;
+pub(crate) const POLLIN: i16 = WinSock::POLLIN as _;
+pub(crate) const POLLNVAL: i16 = WinSock::POLLNVAL as _;
+pub(crate) const POLLHUP: i16 = WinSock::POLLHUP as _;
+pub(crate) const POLLPRI: i16 = WinSock::POLLPRI as _;
+pub(crate) const POLLOUT: i16 = WinSock::POLLOUT as _;
+pub(crate) const POLLRDNORM: i16 = WinSock::POLLRDNORM as _;
+pub(crate) const POLLWRNORM: i16 = WinSock::POLLWRNORM as _;
+pub(crate) const POLLRDBAND: i16 = WinSock::POLLRDBAND as _;
+pub(crate) const POLLWRBAND: i16 = WinSock::POLLWRBAND as _;
+
+// As above, cast the types for better compatibility, and also rename these to
+// their Unix names.
+pub(crate) const SHUT_RDWR: i32 = WinSock::SD_BOTH as _;
+pub(crate) const SHUT_RD: i32 = WinSock::SD_RECEIVE as _;
+pub(crate) const SHUT_WR: i32 = WinSock::SD_SEND as _;
+
+// Include the contents of `WinSock`, renaming as needed to match POSIX.
+//
+// Use `WSA_E_CANCELLED` for `ECANCELED` instead of `WSAECANCELLED`, because
+// `WSAECANCELLED` will be removed in the future.
+// <https://docs.microsoft.com/en-us/windows/win32/api/ws2spi/nc-ws2spi-lpnsplookupserviceend#remarks>
+pub(crate) use WinSock::{
+    closesocket as close, ioctlsocket as ioctl, WSAPoll as poll, ADDRESS_FAMILY as sa_family_t,
+    ADDRINFOA as addrinfo, IN6_ADDR as in6_addr, IN_ADDR as in_addr, IPV6_MREQ as ipv6_mreq,
+    IP_MREQ as ip_mreq, SOCKADDR as sockaddr, SOCKADDR_IN as sockaddr_in,
+    SOCKADDR_IN6 as sockaddr_in6, SOCKADDR_STORAGE as sockaddr_storage, WSAEACCES as EACCES,
+    WSAEADDRINUSE as EADDRINUSE, WSAEADDRNOTAVAIL as EADDRNOTAVAIL,
+    WSAEAFNOSUPPORT as EAFNOSUPPORT, WSAEALREADY as EALREADY, WSAEBADF as EBADF,
+    WSAECONNABORTED as ECONNABORTED, WSAECONNREFUSED as ECONNREFUSED, WSAECONNRESET as ECONNRESET,
+    WSAEDESTADDRREQ as EDESTADDRREQ, WSAEDISCON as EDISCON, WSAEDQUOT as EDQUOT,
+    WSAEFAULT as EFAULT, WSAEHOSTDOWN as EHOSTDOWN, WSAEHOSTUNREACH as EHOSTUNREACH,
+    WSAEINPROGRESS as EINPROGRESS, WSAEINTR as EINTR, WSAEINVAL as EINVAL,
+    WSAEINVALIDPROCTABLE as EINVALIDPROCTABLE, WSAEINVALIDPROVIDER as EINVALIDPROVIDER,
+    WSAEISCONN as EISCONN, WSAELOOP as ELOOP, WSAEMFILE as EMFILE, WSAEMSGSIZE as EMSGSIZE,
+    WSAENAMETOOLONG as ENAMETOOLONG, WSAENETDOWN as ENETDOWN, WSAENETRESET as ENETRESET,
+    WSAENETUNREACH as ENETUNREACH, WSAENOBUFS as ENOBUFS, WSAENOMORE as ENOMORE,
+    WSAENOPROTOOPT as ENOPROTOOPT, WSAENOTCONN as ENOTCONN, WSAENOTEMPTY as ENOTEMPTY,
+    WSAENOTSOCK as ENOTSOCK, WSAEOPNOTSUPP as EOPNOTSUPP, WSAEPFNOSUPPORT as EPFNOSUPPORT,
+    WSAEPROCLIM as EPROCLIM, WSAEPROTONOSUPPORT as EPROTONOSUPPORT, WSAEPROTOTYPE as EPROTOTYPE,
+    WSAEPROVIDERFAILEDINIT as EPROVIDERFAILEDINIT, WSAEREFUSED as EREFUSED, WSAEREMOTE as EREMOTE,
+    WSAESHUTDOWN as ESHUTDOWN, WSAESOCKTNOSUPPORT as ESOCKTNOSUPPORT, WSAESTALE as ESTALE,
+    WSAETIMEDOUT as ETIMEDOUT, WSAETOOMANYREFS as ETOOMANYREFS, WSAEUSERS as EUSERS,
+    WSAEWOULDBLOCK as EWOULDBLOCK, WSAEWOULDBLOCK as EAGAIN, WSAPOLLFD as pollfd,
+    WSA_E_CANCELLED as ECANCELED, *,
+};
diff --git a/vendor/rustix/src/imp/linux_raw/arch/inline/aarch64.rs b/vendor/rustix/src/imp/linux_raw/arch/inline/aarch64.rs
new file mode 100644
index 000000000..7d33a4a52
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/arch/inline/aarch64.rs
@@ -0,0 +1,266 @@
+//! aarch64 Linux system calls.
+
+use crate::imp::reg::{ArgReg, FromAsm, RetReg, SyscallNumber, ToAsm, A0, A1, A2, A3, A4, A5, R0};
+use core::arch::asm;
+
+#[cfg(target_pointer_width = "32")]
+compile_error!("arm64-ilp32 is not supported yet");
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall0_readonly(nr: SyscallNumber<'_>) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "svc 0",
+        in("x8") nr.to_asm(),
+        lateout("x0") r0,
+        options(nostack, preserves_flags, readonly)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall1(nr: SyscallNumber<'_>, a0: ArgReg<'_, A0>) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "svc 0",
+        in("x8") nr.to_asm(),
+        inlateout("x0") a0.to_asm() => r0,
+        options(nostack, preserves_flags)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall1_readonly(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "svc 0",
+        in("x8") nr.to_asm(),
+        inlateout("x0") a0.to_asm() => r0,
+        options(nostack, preserves_flags, readonly)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall1_noreturn(nr: SyscallNumber<'_>, a0: ArgReg<'_, A0>) -> ! {
+    asm!(
+        "svc 0",
+        in("x8") nr.to_asm(),
+        in("x0") a0.to_asm(),
+        options(noreturn)
+    )
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall2(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "svc 0",
+        in("x8") nr.to_asm(),
+        inlateout("x0") a0.to_asm() => r0,
+        in("x1") a1.to_asm(),
+        options(nostack, preserves_flags)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall2_readonly(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "svc 0",
+        in("x8") nr.to_asm(),
+        inlateout("x0") a0.to_asm() => r0,
+        in("x1") a1.to_asm(),
+        options(nostack, preserves_flags, readonly)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall3(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "svc 0",
+        in("x8") nr.to_asm(),
+        inlateout("x0") a0.to_asm() => r0,
+        in("x1") a1.to_asm(),
+        in("x2") a2.to_asm(),
+        options(nostack, preserves_flags)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall3_readonly(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "svc 0",
+        in("x8") nr.to_asm(),
+        inlateout("x0") a0.to_asm() => r0,
+        in("x1") a1.to_asm(),
+        in("x2") a2.to_asm(),
+        options(nostack, preserves_flags, readonly)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall4(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "svc 0",
+        in("x8") nr.to_asm(),
+        inlateout("x0") a0.to_asm() => r0,
+        in("x1") a1.to_asm(),
+        in("x2") a2.to_asm(),
+        in("x3") a3.to_asm(),
+        options(nostack, preserves_flags)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall4_readonly(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "svc 0",
+        in("x8") nr.to_asm(),
+        inlateout("x0") a0.to_asm() => r0,
+        in("x1") a1.to_asm(),
+        in("x2") a2.to_asm(),
+        in("x3") a3.to_asm(),
+        options(nostack, preserves_flags, readonly)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall5(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+    a4: ArgReg<'_, A4>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "svc 0",
+        in("x8") nr.to_asm(),
+        inlateout("x0") a0.to_asm() => r0,
+        in("x1") a1.to_asm(),
+        in("x2") a2.to_asm(),
+        in("x3") a3.to_asm(),
+        in("x4") a4.to_asm(),
+        options(nostack, preserves_flags)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall5_readonly(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+    a4: ArgReg<'_, A4>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "svc 0",
+        in("x8") nr.to_asm(),
+        inlateout("x0") a0.to_asm() => r0,
+        in("x1") a1.to_asm(),
+        in("x2") a2.to_asm(),
+        in("x3") a3.to_asm(),
+        in("x4") a4.to_asm(),
+        options(nostack, preserves_flags, readonly)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall6(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+    a4: ArgReg<'_, A4>,
+    a5: ArgReg<'_, A5>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "svc 0",
+        in("x8") nr.to_asm(),
+        inlateout("x0") a0.to_asm() => r0,
+        in("x1") a1.to_asm(),
+        in("x2") a2.to_asm(),
+        in("x3") a3.to_asm(),
+        in("x4") a4.to_asm(),
+        in("x5") a5.to_asm(),
+        options(nostack, preserves_flags)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall6_readonly(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+    a4: ArgReg<'_, A4>,
+    a5: ArgReg<'_, A5>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "svc 0",
+        in("x8") nr.to_asm(),
+        inlateout("x0") a0.to_asm() => r0,
+        in("x1") a1.to_asm(),
+        in("x2") a2.to_asm(),
+        in("x3") a3.to_asm(),
+        in("x4") a4.to_asm(),
+        in("x5") a5.to_asm(),
+        options(nostack, preserves_flags, readonly)
+    );
+    FromAsm::from_asm(r0)
+}
diff --git a/vendor/rustix/src/imp/linux_raw/arch/inline/arm.rs b/vendor/rustix/src/imp/linux_raw/arch/inline/arm.rs
new file mode 100644
index 000000000..9acccd6dc
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/arch/inline/arm.rs
@@ -0,0 +1,263 @@
+//! arm Linux system calls.
+
+use crate::imp::reg::{ArgReg, FromAsm, RetReg, SyscallNumber, ToAsm, A0, A1, A2, A3, A4, A5, R0};
+use core::arch::asm;
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall0_readonly(nr: SyscallNumber<'_>) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "svc 0",
+        in("r7") nr.to_asm(),
+        lateout("r0") r0,
+        options(nostack, preserves_flags, readonly)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall1(nr: SyscallNumber<'_>, a0: ArgReg<'_, A0>) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "svc 0",
+        in("r7") nr.to_asm(),
+        inlateout("r0") a0.to_asm() => r0,
+        options(nostack, preserves_flags)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall1_readonly(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "svc 0",
+        in("r7") nr.to_asm(),
+        inlateout("r0") a0.to_asm() => r0,
+        options(nostack, preserves_flags, readonly)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall1_noreturn(nr: SyscallNumber<'_>, a0: ArgReg<'_, A0>) -> ! {
+    asm!(
+        "svc 0",
+        in("r7") nr.to_asm(),
+        in("r0") a0.to_asm(),
+        options(noreturn)
+    )
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall2(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "svc 0",
+        in("r7") nr.to_asm(),
+        inlateout("r0") a0.to_asm() => r0,
+        in("r1") a1.to_asm(),
+        options(nostack, preserves_flags)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall2_readonly(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "svc 0",
+        in("r7") nr.to_asm(),
+        inlateout("r0") a0.to_asm() => r0,
+        in("r1") a1.to_asm(),
+        options(nostack, preserves_flags, readonly)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall3(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "svc 0",
+        in("r7") nr.to_asm(),
+        inlateout("r0") a0.to_asm() => r0,
+        in("r1") a1.to_asm(),
+        in("r2") a2.to_asm(),
+        options(nostack, preserves_flags)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall3_readonly(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "svc 0",
+        in("r7") nr.to_asm(),
+        inlateout("r0") a0.to_asm() => r0,
+        in("r1") a1.to_asm(),
+        in("r2") a2.to_asm(),
+        options(nostack, preserves_flags, readonly)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall4(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "svc 0",
+        in("r7") nr.to_asm(),
+        inlateout("r0") a0.to_asm() => r0,
+        in("r1") a1.to_asm(),
+        in("r2") a2.to_asm(),
+        in("r3") a3.to_asm(),
+        options(nostack, preserves_flags)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall4_readonly(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "svc 0",
+        in("r7") nr.to_asm(),
+        inlateout("r0") a0.to_asm() => r0,
+        in("r1") a1.to_asm(),
+        in("r2") a2.to_asm(),
+        in("r3") a3.to_asm(),
+        options(nostack, preserves_flags, readonly)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall5(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+    a4: ArgReg<'_, A4>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "svc 0",
+        in("r7") nr.to_asm(),
+        inlateout("r0") a0.to_asm() => r0,
+        in("r1") a1.to_asm(),
+        in("r2") a2.to_asm(),
+        in("r3") a3.to_asm(),
+        in("r4") a4.to_asm(),
+        options(nostack, preserves_flags)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall5_readonly(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+    a4: ArgReg<'_, A4>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "svc 0",
+        in("r7") nr.to_asm(),
+        inlateout("r0") a0.to_asm() => r0,
+        in("r1") a1.to_asm(),
+        in("r2") a2.to_asm(),
+        in("r3") a3.to_asm(),
+        in("r4") a4.to_asm(),
+        options(nostack, preserves_flags, readonly)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall6(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+    a4: ArgReg<'_, A4>,
+    a5: ArgReg<'_, A5>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "svc 0",
+        in("r7") nr.to_asm(),
+        inlateout("r0") a0.to_asm() => r0,
+        in("r1") a1.to_asm(),
+        in("r2") a2.to_asm(),
+        in("r3") a3.to_asm(),
+        in("r4") a4.to_asm(),
+        in("r5") a5.to_asm(),
+        options(nostack, preserves_flags)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall6_readonly(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+    a4: ArgReg<'_, A4>,
+    a5: ArgReg<'_, A5>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "svc 0",
+        in("r7") nr.to_asm(),
+        inlateout("r0") a0.to_asm() => r0,
+        in("r1") a1.to_asm(),
+        in("r2") a2.to_asm(),
+        in("r3") a3.to_asm(),
+        in("r4") a4.to_asm(),
+        in("r5") a5.to_asm(),
+        options(nostack, preserves_flags, readonly)
+    );
+    FromAsm::from_asm(r0)
+}
diff --git a/vendor/rustix/src/imp/linux_raw/arch/inline/mips.rs b/vendor/rustix/src/imp/linux_raw/arch/inline/mips.rs
new file mode 100644
index 000000000..0f2b9d9d2
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/arch/inline/mips.rs
@@ -0,0 +1,543 @@
+//! mipsel Linux system calls.
+//!
+//! On mipsel, Linux indicates success or failure using `$a3` rather
+//! than by returning a negative error code as most other architectures do.
+//!
+//! Mips-family platforms have a special calling convention for `__NR_pipe`,
+//! however we use `__NR_pipe2` instead to avoid having to implement it.
+
+use crate::imp::reg::{
+    ArgReg, FromAsm, RetReg, SyscallNumber, ToAsm, A0, A1, A2, A3, A4, A5, A6, R0,
+};
+use core::arch::asm;
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall0_readonly(nr: SyscallNumber) -> RetReg<R0> {
+    let x0;
+    let err: usize;
+    asm!(
+        "syscall",
+        inlateout("$2" /*$v0*/) nr.to_asm() => x0,
+        lateout("$7" /*$a3*/) err,
+        lateout("$8" /*$t0*/) _,
+        lateout("$9" /*$t1*/) _,
+        lateout("$10" /*$t2*/) _,
+        lateout("$11" /*$t3*/) _,
+        lateout("$12" /*$t4*/) _,
+        lateout("$13" /*$t5*/) _,
+        lateout("$14" /*$t6*/) _,
+        lateout("$15" /*$t7*/) _,
+        lateout("$24" /*$t8*/) _,
+        lateout("$25" /*$t9*/) _,
+        options(nostack, preserves_flags, readonly)
+    );
+    FromAsm::from_asm(if err != 0 {
+        (x0 as usize).wrapping_neg() as *mut _
+    } else {
+        x0
+    })
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall1(nr: SyscallNumber<'_>, a0: ArgReg<'_, A0>) -> RetReg<R0> {
+    let x0;
+    let err: usize;
+    asm!(
+        "syscall",
+        inlateout("$2" /*$v0*/) nr.to_asm() => x0,
+        in("$4" /*$a0*/) a0.to_asm(),
+        lateout("$7" /*$a3*/) err,
+        lateout("$8" /*$t0*/) _,
+        lateout("$9" /*$t1*/) _,
+        lateout("$10" /*$t2*/) _,
+        lateout("$11" /*$t3*/) _,
+        lateout("$12" /*$t4*/) _,
+        lateout("$13" /*$t5*/) _,
+        lateout("$14" /*$t6*/) _,
+        lateout("$15" /*$t7*/) _,
+        lateout("$24" /*$t8*/) _,
+        lateout("$25" /*$t9*/) _,
+        options(nostack, preserves_flags)
+    );
+    FromAsm::from_asm(if err != 0 {
+        (x0 as usize).wrapping_neg() as *mut _
+    } else {
+        x0
+    })
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall1_readonly(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+) -> RetReg<R0> {
+    let x0;
+    let err: usize;
+    asm!(
+        "syscall",
+        inlateout("$2" /*$v0*/) nr.to_asm() => x0,
+        in("$4" /*$a0*/) a0.to_asm(),
+        lateout("$7" /*$a3*/) err,
+        lateout("$8" /*$t0*/) _,
+        lateout("$9" /*$t1*/) _,
+        lateout("$10" /*$t2*/) _,
+        lateout("$11" /*$t3*/) _,
+        lateout("$12" /*$t4*/) _,
+        lateout("$13" /*$t5*/) _,
+        lateout("$14" /*$t6*/) _,
+        lateout("$15" /*$t7*/) _,
+        lateout("$24" /*$t8*/) _,
+        lateout("$25" /*$t9*/) _,
+        options(nostack, preserves_flags, readonly)
+    );
+    FromAsm::from_asm(if err != 0 {
+        (x0 as usize).wrapping_neg() as *mut _
+    } else {
+        x0
+    })
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall1_noreturn(nr: SyscallNumber<'_>, a0: ArgReg<'_, A0>) -> ! {
+    asm!(
+        "syscall",
+        in("$2" /*$v0*/) nr.to_asm(),
+        in("$4" /*$a0*/) a0.to_asm(),
+        options(noreturn)
+    )
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall2(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+) -> RetReg<R0> {
+    let x0;
+    let err: usize;
+    asm!(
+        "syscall",
+        inlateout("$2" /*$v0*/) nr.to_asm() => x0,
+        in("$4" /*$a0*/) a0.to_asm(),
+        in("$5" /*$a1*/) a1.to_asm(),
+        lateout("$7" /*$a3*/) err,
+        lateout("$8" /*$t0*/) _,
+        lateout("$9" /*$t1*/) _,
+        lateout("$10" /*$t2*/) _,
+        lateout("$11" /*$t3*/) _,
+        lateout("$12" /*$t4*/) _,
+        lateout("$13" /*$t5*/) _,
+        lateout("$14" /*$t6*/) _,
+        lateout("$15" /*$t7*/) _,
+        lateout("$24" /*$t8*/) _,
+        lateout("$25" /*$t9*/) _,
+        options(nostack, preserves_flags)
+    );
+    FromAsm::from_asm(if err != 0 {
+        (x0 as usize).wrapping_neg() as *mut _
+    } else {
+        x0
+    })
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall2_readonly(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+) -> RetReg<R0> {
+    let x0;
+    let err: usize;
+    asm!(
+        "syscall",
+        inlateout("$2" /*$v0*/) nr.to_asm() => x0,
+        in("$4" /*$a0*/) a0.to_asm(),
+        in("$5" /*$a1*/) a1.to_asm(),
+        lateout("$7" /*$a3*/) err,
+        lateout("$8" /*$t0*/) _,
+        lateout("$9" /*$t1*/) _,
+        lateout("$10" /*$t2*/) _,
+        lateout("$11" /*$t3*/) _,
+        lateout("$12" /*$t4*/) _,
+        lateout("$13" /*$t5*/) _,
+        lateout("$14" /*$t6*/) _,
+        lateout("$15" /*$t7*/) _,
+        lateout("$24" /*$t8*/) _,
+        lateout("$25" /*$t9*/) _,
+        options(nostack, preserves_flags, readonly)
+    );
+    FromAsm::from_asm(if err != 0 {
+        (x0 as usize).wrapping_neg() as *mut _
+    } else {
+        x0
+    })
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall3(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+) -> RetReg<R0> {
+    let x0;
+    let err: usize;
+    asm!(
+        "syscall",
+        inlateout("$2" /*$v0*/) nr.to_asm() => x0,
+        in("$4" /*$a0*/) a0.to_asm(),
+        in("$5" /*$a1*/) a1.to_asm(),
+        in("$6" /*$a2*/) a2.to_asm(),
+        lateout("$7" /*$a3*/) err,
+        lateout("$8" /*$t0*/) _,
+        lateout("$9" /*$t1*/) _,
+        lateout("$10" /*$t2*/) _,
+        lateout("$11" /*$t3*/) _,
+        lateout("$12" /*$t4*/) _,
+        lateout("$13" /*$t5*/) _,
+        lateout("$14" /*$t6*/) _,
+        lateout("$15" /*$t7*/) _,
+        lateout("$24" /*$t8*/) _,
+        lateout("$25" /*$t9*/) _,
+        options(nostack, preserves_flags)
+    );
+    FromAsm::from_asm(if err != 0 {
+        (x0 as usize).wrapping_neg() as *mut _
+    } else {
+        x0
+    })
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall3_readonly(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+) -> RetReg<R0> {
+    let x0;
+    let err: usize;
+    asm!(
+        "syscall",
+        inlateout("$2" /*$v0*/) nr.to_asm() => x0,
+        in("$4" /*$a0*/) a0.to_asm(),
+        in("$5" /*$a1*/) a1.to_asm(),
+        in("$6" /*$a2*/) a2.to_asm(),
+        lateout("$7" /*$a3*/) err,
+        lateout("$8" /*$t0*/) _,
+        lateout("$9" /*$t1*/) _,
+        lateout("$10" /*$t2*/) _,
+        lateout("$11" /*$t3*/) _,
+        lateout("$12" /*$t4*/) _,
+        lateout("$13" /*$t5*/) _,
+        lateout("$14" /*$t6*/) _,
+        lateout("$15" /*$t7*/) _,
+        lateout("$24" /*$t8*/) _,
+        lateout("$25" /*$t9*/) _,
+        options(nostack, preserves_flags, readonly)
+    );
+    FromAsm::from_asm(if err != 0 {
+        (x0 as usize).wrapping_neg() as *mut _
+    } else {
+        x0
+    })
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall4(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+) -> RetReg<R0> {
+    let x0;
+    let err: usize;
+    asm!(
+        "syscall",
+        inlateout("$2" /*$v0*/) nr.to_asm() => x0,
+        in("$4" /*$a0*/) a0.to_asm(),
+        in("$5" /*$a1*/) a1.to_asm(),
+        in("$6" /*$a2*/) a2.to_asm(),
+        inlateout("$7" /*$a3*/) a3.to_asm() => err,
+        lateout("$8" /*$t0*/) _,
+        lateout("$9" /*$t1*/) _,
+        lateout("$10" /*$t2*/) _,
+        lateout("$11" /*$t3*/) _,
+        lateout("$12" /*$t4*/) _,
+        lateout("$13" /*$t5*/) _,
+        lateout("$14" /*$t6*/) _,
+        lateout("$15" /*$t7*/) _,
+        lateout("$24" /*$t8*/) _,
+        lateout("$25" /*$t9*/) _,
+        options(nostack, preserves_flags)
+    );
+    FromAsm::from_asm(if err != 0 {
+        (x0 as usize).wrapping_neg() as *mut _
+    } else {
+        x0
+    })
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall4_readonly(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+) -> RetReg<R0> {
+    let x0;
+    let err: usize;
+    asm!(
+        "syscall",
+        inlateout("$2" /*$v0*/) nr.to_asm() => x0,
+        in("$4" /*$a0*/) a0.to_asm(),
+        in("$5" /*$a1*/) a1.to_asm(),
+        in("$6" /*$a2*/) a2.to_asm(),
+        inlateout("$7" /*$a3*/) a3.to_asm() => err,
+        lateout("$8" /*$t0*/) _,
+        lateout("$9" /*$t1*/) _,
+        lateout("$10" /*$t2*/) _,
+        lateout("$11" /*$t3*/) _,
+        lateout("$12" /*$t4*/) _,
+        lateout("$13" /*$t5*/) _,
+        lateout("$14" /*$t6*/) _,
+        lateout("$15" /*$t7*/) _,
+        lateout("$24" /*$t8*/) _,
+        lateout("$25" /*$t9*/) _,
+        options(nostack, preserves_flags, readonly)
+    );
+    FromAsm::from_asm(if err != 0 {
+        (x0 as usize).wrapping_neg() as *mut _
+    } else {
+        x0
+    })
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall5(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+    a4: ArgReg<'_, A4>,
+) -> RetReg<R0> {
+    let x0;
+    let err: usize;
+    asm!(
+        ".set noat",
+        "subu $sp, 32",
+        "sw {}, 16($sp)",
+        "syscall",
+        "addu $sp, 32",
+        ".set at",
+        in(reg) a4.to_asm(),
+        inlateout("$2" /*$v0*/) nr.to_asm() => x0,
+        in("$4" /*$a0*/) a0.to_asm(),
+        in("$5" /*$a1*/) a1.to_asm(),
+        in("$6" /*$a2*/) a2.to_asm(),
+        inlateout("$7" /*$a3*/) a3.to_asm() => err,
+        lateout("$8" /*$t0*/) _,
+        lateout("$9" /*$t1*/) _,
+        lateout("$10" /*$t2*/) _,
+        lateout("$11" /*$t3*/) _,
+        lateout("$12" /*$t4*/) _,
+        lateout("$13" /*$t5*/) _,
+        lateout("$14" /*$t6*/) _,
+        lateout("$15" /*$t7*/) _,
+        lateout("$24" /*$t8*/) _,
+        lateout("$25" /*$t9*/) _,
+        options(preserves_flags)
+    );
+    FromAsm::from_asm(if err != 0 {
+        (x0 as usize).wrapping_neg() as *mut _
+    } else {
+        x0
+    })
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall5_readonly(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+    a4: ArgReg<'_, A4>,
+) -> RetReg<R0> {
+    let x0;
+    let err: usize;
+    asm!(
+        ".set noat",
+        "subu $sp, 32",
+        "sw {}, 16($sp)",
+        "syscall",
+        "addu $sp, 32",
+        ".set at",
+        in(reg) a4.to_asm(),
+        inlateout("$2" /*$v0*/) nr.to_asm() => x0,
+        in("$4" /*$a0*/) a0.to_asm(),
+        in("$5" /*$a1*/) a1.to_asm(),
+        in("$6" /*$a2*/) a2.to_asm(),
+        inlateout("$7" /*$a3*/) a3.to_asm() => err,
+        lateout("$8" /*$t0*/) _,
+        lateout("$9" /*$t1*/) _,
+        lateout("$10" /*$t2*/) _,
+        lateout("$11" /*$t3*/) _,
+        lateout("$12" /*$t4*/) _,
+        lateout("$13" /*$t5*/) _,
+        lateout("$14" /*$t6*/) _,
+        lateout("$15" /*$t7*/) _,
+        lateout("$24" /*$t8*/) _,
+        lateout("$25" /*$t9*/) _,
+        options(preserves_flags, readonly)
+    );
+    FromAsm::from_asm(if err != 0 {
+        (x0 as usize).wrapping_neg() as *mut _
+    } else {
+        x0
+    })
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall6(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+    a4: ArgReg<'_, A4>,
+    a5: ArgReg<'_, A5>,
+) -> RetReg<R0> {
+    let x0;
+    let err: usize;
+    asm!(
+        ".set noat",
+        "subu $sp, 32",
+        "sw {}, 16($sp)",
+        "sw {}, 20($sp)",
+        "syscall",
+        "addu $sp, 32",
+        ".set at",
+        in(reg) a4.to_asm(),
+        in(reg) a5.to_asm(),
+        inlateout("$2" /*$v0*/) nr.to_asm() => x0,
+        in("$4" /*$a0*/) a0.to_asm(),
+        in("$5" /*$a1*/) a1.to_asm(),
+        in("$6" /*$a2*/) a2.to_asm(),
+        inlateout("$7" /*$a3*/) a3.to_asm() => err,
+        lateout("$8" /*$t0*/) _,
+        lateout("$9" /*$t1*/) _,
+        lateout("$10" /*$t2*/) _,
+        lateout("$11" /*$t3*/) _,
+        lateout("$12" /*$t4*/) _,
+        lateout("$13" /*$t5*/) _,
+        lateout("$14" /*$t6*/) _,
+        lateout("$15" /*$t7*/) _,
+        lateout("$24" /*$t8*/) _,
+        lateout("$25" /*$t9*/) _,
+        options(preserves_flags)
+    );
+    FromAsm::from_asm(if err != 0 {
+        (x0 as usize).wrapping_neg() as *mut _
+    } else {
+        x0
+    })
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall6_readonly(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+    a4: ArgReg<'_, A4>,
+    a5: ArgReg<'_, A5>,
+) -> RetReg<R0> {
+    let x0;
+    let err: usize;
+    asm!(
+        ".set noat",
+        "subu $sp, 32",
+        "sw {}, 16($sp)",
+        "sw {}, 20($sp)",
+        "syscall",
+        "addu $sp, 32",
+        ".set at",
+        in(reg) a4.to_asm(),
+        in(reg) a5.to_asm(),
+        inlateout("$2" /*$v0*/) nr.to_asm() => x0,
+        in("$4" /*$a0*/) a0.to_asm(),
+        in("$5" /*$a1*/) a1.to_asm(),
+        in("$6" /*$a2*/) a2.to_asm(),
+        inlateout("$7" /*$a3*/) a3.to_asm() => err,
+        lateout("$8" /*$t0*/) _,
+        lateout("$9" /*$t1*/) _,
+        lateout("$10" /*$t2*/) _,
+        lateout("$11" /*$t3*/) _,
+        lateout("$12" /*$t4*/) _,
+        lateout("$13" /*$t5*/) _,
+        lateout("$14" /*$t6*/) _,
+        lateout("$15" /*$t7*/) _,
+        lateout("$24" /*$t8*/) _,
+        lateout("$25" /*$t9*/) _,
+        options(preserves_flags, readonly)
+    );
+    FromAsm::from_asm(if err != 0 {
+        (x0 as usize).wrapping_neg() as *mut _
+    } else {
+        x0
+    })
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall7_readonly(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+    a4: ArgReg<'_, A4>,
+    a5: ArgReg<'_, A5>,
+    a6: ArgReg<'_, A6>,
+) -> RetReg<R0> {
+    let x0;
+    let err: usize;
+    asm!(
+        ".set noat",
+        "subu $sp, 32",
+        "sw {}, 16($sp)",
+        "sw {}, 20($sp)",
+        "sw {}, 24($sp)",
+        "syscall",
+        "addu $sp, 32",
+        ".set at",
+        in(reg) a4.to_asm(),
+        in(reg) a5.to_asm(),
+        in(reg) a6.to_asm(),
+        inlateout("$2" /*$v0*/) nr.to_asm() => x0,
+        in("$4" /*$a0*/) a0.to_asm(),
+        in("$5" /*$a1*/) a1.to_asm(),
+        in("$6" /*$a2*/) a2.to_asm(),
+        inlateout("$7" /*$a3*/) a3.to_asm() => err,
+        lateout("$8" /*$t0*/) _,
+        lateout("$9" /*$t1*/) _,
+        lateout("$10" /*$t2*/) _,
+        lateout("$11" /*$t3*/) _,
+        lateout("$12" /*$t4*/) _,
+        lateout("$13" /*$t5*/) _,
+        lateout("$14" /*$t6*/) _,
+        lateout("$15" /*$t7*/) _,
+        lateout("$24" /*$t8*/) _,
+        lateout("$25" /*$t9*/) _,
+        options(preserves_flags, readonly)
+    );
+    FromAsm::from_asm(if err != 0 {
+        (x0 as usize).wrapping_neg() as *mut _
+    } else {
+        x0
+    })
+}
diff --git a/vendor/rustix/src/imp/linux_raw/arch/inline/mips64.rs b/vendor/rustix/src/imp/linux_raw/arch/inline/mips64.rs
new file mode 100644
index 000000000..36dd79316
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/arch/inline/mips64.rs
@@ -0,0 +1,464 @@
+//! mips64el Linux system calls.
+//!
+//! On mips64el, Linux indicates success or failure using `$a3` (`$7`) rather
+//! than by returning a negative error code as most other architectures do.
+//!
+//! Mips-family platforms have a special calling convention for `__NR_pipe`,
+//! however we use `__NR_pipe2` instead to avoid having to implement it.
+
+use crate::imp::reg::{ArgReg, FromAsm, RetReg, SyscallNumber, ToAsm, A0, A1, A2, A3, A4, A5, R0};
+use core::arch::asm;
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall0_readonly(nr: SyscallNumber) -> RetReg<R0> {
+    let x0;
+    let err: usize;
+    asm!(
+        "syscall",
+        inlateout("$2" /*$v0*/) nr.to_asm() => x0,
+        lateout("$7" /*$a3*/) err,
+        lateout("$8" /*$a4*/) _,
+        lateout("$9" /*$a5*/) _,
+        lateout("$10" /*$a6*/) _,
+        lateout("$11" /*$a7*/) _,
+        lateout("$12" /*$t0*/) _,
+        lateout("$13" /*$t1*/) _,
+        lateout("$14" /*$t2*/) _,
+        lateout("$15" /*$t3*/) _,
+        lateout("$24" /*$t8*/) _,
+        lateout("$25" /*$t9*/) _,
+        options(nostack, preserves_flags, readonly)
+    );
+    FromAsm::from_asm(if err != 0 {
+        (x0 as usize).wrapping_neg() as *mut _
+    } else {
+        x0
+    })
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall1(nr: SyscallNumber<'_>, a0: ArgReg<'_, A0>) -> RetReg<R0> {
+    let x0;
+    let err: usize;
+    asm!(
+        "syscall",
+        inlateout("$2" /*$v0*/) nr.to_asm() => x0,
+        in("$4" /*$a0*/) a0.to_asm(),
+        lateout("$7" /*$a3*/) err,
+        lateout("$8" /*$a4*/) _,
+        lateout("$9" /*$a5*/) _,
+        lateout("$10" /*$a6*/) _,
+        lateout("$11" /*$a7*/) _,
+        lateout("$12" /*$t0*/) _,
+        lateout("$13" /*$t1*/) _,
+        lateout("$14" /*$t2*/) _,
+        lateout("$15" /*$t3*/) _,
+        lateout("$24" /*$t8*/) _,
+        lateout("$25" /*$t9*/) _,
+        options(nostack, preserves_flags)
+    );
+    FromAsm::from_asm(if err != 0 {
+        (x0 as usize).wrapping_neg() as *mut _
+    } else {
+        x0
+    })
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall1_readonly(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+) -> RetReg<R0> {
+    let x0;
+    let err: usize;
+    asm!(
+        "syscall",
+        inlateout("$2" /*$v0*/) nr.to_asm() => x0,
+        in("$4" /*$a0*/) a0.to_asm(),
+        lateout("$7" /*$a3*/) err,
+        lateout("$8" /*$a4*/) _,
+        lateout("$9" /*$a5*/) _,
+        lateout("$10" /*$a6*/) _,
+        lateout("$11" /*$a7*/) _,
+        lateout("$12" /*$t0*/) _,
+        lateout("$13" /*$t1*/) _,
+        lateout("$14" /*$t2*/) _,
+        lateout("$15" /*$t3*/) _,
+        lateout("$24" /*$t8*/) _,
+        lateout("$25" /*$t9*/) _,
+        options(nostack, preserves_flags, readonly)
+    );
+    FromAsm::from_asm(if err != 0 {
+        (x0 as usize).wrapping_neg() as *mut _
+    } else {
+        x0
+    })
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall1_noreturn(nr: SyscallNumber<'_>, a0: ArgReg<'_, A0>) -> ! {
+    asm!(
+        "syscall",
+        in("$2" /*$v0*/) nr.to_asm(),
+        in("$4" /*$a0*/) a0.to_asm(),
+        options(noreturn)
+    )
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall2(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+) -> RetReg<R0> {
+    let x0;
+    let err: usize;
+    asm!(
+        "syscall",
+        inlateout("$2" /*$v0*/) nr.to_asm() => x0,
+        in("$4" /*$a0*/) a0.to_asm(),
+        in("$5" /*$a1*/) a1.to_asm(),
+        lateout("$7" /*$a3*/) err,
+        lateout("$8" /*$a4*/) _,
+        lateout("$9" /*$a5*/) _,
+        lateout("$10" /*$a6*/) _,
+        lateout("$11" /*$a7*/) _,
+        lateout("$12" /*$t0*/) _,
+        lateout("$13" /*$t1*/) _,
+        lateout("$14" /*$t2*/) _,
+        lateout("$15" /*$t3*/) _,
+        lateout("$24" /*$t8*/) _,
+        lateout("$25" /*$t9*/) _,
+        options(nostack, preserves_flags)
+    );
+    FromAsm::from_asm(if err != 0 {
+        (x0 as usize).wrapping_neg() as *mut _
+    } else {
+        x0
+    })
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall2_readonly(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+) -> RetReg<R0> {
+    let x0;
+    let err: usize;
+    asm!(
+        "syscall",
+        inlateout("$2" /*$v0*/) nr.to_asm() => x0,
+        in("$4" /*$a0*/) a0.to_asm(),
+        in("$5" /*$a1*/) a1.to_asm(),
+        lateout("$7" /*$a3*/) err,
+        lateout("$8" /*$a4*/) _,
+        lateout("$9" /*$a5*/) _,
+        lateout("$10" /*$a6*/) _,
+        lateout("$11" /*$a7*/) _,
+        lateout("$12" /*$t0*/) _,
+        lateout("$13" /*$t1*/) _,
+        lateout("$14" /*$t2*/) _,
+        lateout("$15" /*$t3*/) _,
+        lateout("$24" /*$t8*/) _,
+        lateout("$25" /*$t9*/) _,
+        options(nostack, preserves_flags, readonly)
+    );
+    FromAsm::from_asm(if err != 0 {
+        (x0 as usize).wrapping_neg() as *mut _
+    } else {
+        x0
+    })
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall3(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+) -> RetReg<R0> {
+    let x0;
+    let err: usize;
+    asm!(
+        "syscall",
+        inlateout("$2" /*$v0*/) nr.to_asm() => x0,
+        in("$4" /*$a0*/) a0.to_asm(),
+        in("$5" /*$a1*/) a1.to_asm(),
+        in("$6" /*$a2*/) a2.to_asm(),
+        lateout("$7" /*$a3*/) err,
+        lateout("$8" /*$a4*/) _,
+        lateout("$9" /*$a5*/) _,
+        lateout("$10" /*$a6*/) _,
+        lateout("$11" /*$a7*/) _,
+        lateout("$12" /*$t0*/) _,
+        lateout("$13" /*$t1*/) _,
+        lateout("$14" /*$t2*/) _,
+        lateout("$15" /*$t3*/) _,
+        lateout("$24" /*$t8*/) _,
+        lateout("$25" /*$t9*/) _,
+        options(nostack, preserves_flags)
+    );
+    FromAsm::from_asm(if err != 0 {
+        (x0 as usize).wrapping_neg() as *mut _
+    } else {
+        x0
+    })
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall3_readonly(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+) -> RetReg<R0> {
+    let x0;
+    let err: usize;
+    asm!(
+        "syscall",
+        inlateout("$2" /*$v0*/) nr.to_asm() => x0,
+        in("$4" /*$a0*/) a0.to_asm(),
+        in("$5" /*$a1*/) a1.to_asm(),
+        in("$6" /*$a2*/) a2.to_asm(),
+        lateout("$7" /*$a3*/) err,
+        lateout("$8" /*$a4*/) _,
+        lateout("$9" /*$a5*/) _,
+        lateout("$10" /*$a6*/) _,
+        lateout("$11" /*$a7*/) _,
+        lateout("$12" /*$t0*/) _,
+        lateout("$13" /*$t1*/) _,
+        lateout("$14" /*$t2*/) _,
+        lateout("$15" /*$t3*/) _,
+        lateout("$24" /*$t8*/) _,
+        lateout("$25" /*$t9*/) _,
+        options(nostack, preserves_flags, readonly)
+    );
+    FromAsm::from_asm(if err != 0 {
+        (x0 as usize).wrapping_neg() as *mut _
+    } else {
+        x0
+    })
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall4(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+) -> RetReg<R0> {
+    let x0;
+    let err: usize;
+    asm!(
+        "syscall",
+        inlateout("$2" /*$v0*/) nr.to_asm() => x0,
+        in("$4" /*$a0*/) a0.to_asm(),
+        in("$5" /*$a1*/) a1.to_asm(),
+        in("$6" /*$a2*/) a2.to_asm(),
+        inlateout("$7" /*$a3*/) a3.to_asm() => err,
+        lateout("$8" /*$a4*/) _,
+        lateout("$9" /*$a5*/) _,
+        lateout("$10" /*$a6*/) _,
+        lateout("$11" /*$a7*/) _,
+        lateout("$12" /*$t0*/) _,
+        lateout("$13" /*$t1*/) _,
+        lateout("$14" /*$t2*/) _,
+        lateout("$15" /*$t3*/) _,
+        lateout("$24" /*$t8*/) _,
+        lateout("$25" /*$t9*/) _,
+        options(nostack, preserves_flags)
+    );
+    FromAsm::from_asm(if err != 0 {
+        (x0 as usize).wrapping_neg() as *mut _
+    } else {
+        x0
+    })
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall4_readonly(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+) -> RetReg<R0> {
+    let x0;
+    let err: usize;
+    asm!(
+        "syscall",
+        inlateout("$2" /*$v0*/) nr.to_asm() => x0,
+        in("$4" /*$a0*/) a0.to_asm(),
+        in("$5" /*$a1*/) a1.to_asm(),
+        in("$6" /*$a2*/) a2.to_asm(),
+        inlateout("$7" /*$a3*/) a3.to_asm() => err,
+        lateout("$8" /*$a4*/) _,
+        lateout("$9" /*$a5*/) _,
+        lateout("$10" /*$a6*/) _,
+        lateout("$11" /*$a7*/) _,
+        lateout("$12" /*$t0*/) _,
+        lateout("$13" /*$t1*/) _,
+        lateout("$14" /*$t2*/) _,
+        lateout("$15" /*$t3*/) _,
+        lateout("$24" /*$t8*/) _,
+        lateout("$25" /*$t9*/) _,
+        options(nostack, preserves_flags, readonly)
+    );
+    FromAsm::from_asm(if err != 0 {
+        (x0 as usize).wrapping_neg() as *mut _
+    } else {
+        x0
+    })
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall5(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+    a4: ArgReg<'_, A4>,
+) -> RetReg<R0> {
+    let x0;
+    let err: usize;
+    asm!(
+        "syscall",
+        inlateout("$2" /*$v0*/) nr.to_asm() => x0,
+        in("$4" /*$a0*/) a0.to_asm(),
+        in("$5" /*$a1*/) a1.to_asm(),
+        in("$6" /*$a2*/) a2.to_asm(),
+        inlateout("$7" /*$a3*/) a3.to_asm() => err,
+        inlateout("$8" /*$a4*/) a4.to_asm() => _,
+        lateout("$9" /*$a5*/) _,
+        lateout("$10" /*$a6*/) _,
+        lateout("$11" /*$a7*/) _,
+        lateout("$12" /*$t0*/) _,
+        lateout("$13" /*$t1*/) _,
+        lateout("$14" /*$t2*/) _,
+        lateout("$15" /*$t3*/) _,
+        lateout("$24" /*$t8*/) _,
+        lateout("$25" /*$t9*/) _,
+        options(nostack, preserves_flags)
+    );
+    FromAsm::from_asm(if err != 0 {
+        (x0 as usize).wrapping_neg() as *mut _
+    } else {
+        x0
+    })
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall5_readonly(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+    a4: ArgReg<'_, A4>,
+) -> RetReg<R0> {
+    let x0;
+    let err: usize;
+    asm!(
+        "syscall",
+        inlateout("$2" /*$v0*/) nr.to_asm() => x0,
+        in("$4" /*$a0*/) a0.to_asm(),
+        in("$5" /*$a1*/) a1.to_asm(),
+        in("$6" /*$a2*/) a2.to_asm(),
+        inlateout("$7" /*$a3*/) a3.to_asm() => err,
+        inlateout("$8" /*$a4*/) a4.to_asm() => _,
+        lateout("$9" /*$a5*/) _,
+        lateout("$10" /*$a6*/) _,
+        lateout("$11" /*$a7*/) _,
+        lateout("$12" /*$t0*/) _,
+        lateout("$13" /*$t1*/) _,
+        lateout("$14" /*$t2*/) _,
+        lateout("$15" /*$t3*/) _,
+        lateout("$24" /*$t8*/) _,
+        lateout("$25" /*$t9*/) _,
+        options(nostack, preserves_flags, readonly)
+    );
+    FromAsm::from_asm(if err != 0 {
+        (x0 as usize).wrapping_neg() as *mut _
+    } else {
+        x0
+    })
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall6(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+    a4: ArgReg<'_, A4>,
+    a5: ArgReg<'_, A5>,
+) -> RetReg<R0> {
+    let x0;
+    let err: usize;
+    asm!(
+        "syscall",
+        inlateout("$2" /*$v0*/) nr.to_asm() => x0,
+        in("$4" /*$a0*/) a0.to_asm(),
+        in("$5" /*$a1*/) a1.to_asm(),
+        in("$6" /*$a2*/) a2.to_asm(),
+        inlateout("$7" /*$a3*/) a3.to_asm() => err,
+        inlateout("$8" /*$a4*/) a4.to_asm() => _,
+        inlateout("$9" /*$a5*/) a5.to_asm() => _,
+        lateout("$10" /*$a6*/) _,
+        lateout("$11" /*$a7*/) _,
+        lateout("$12" /*$t0*/) _,
+        lateout("$13" /*$t1*/) _,
+        lateout("$14" /*$t2*/) _,
+        lateout("$15" /*$t3*/) _,
+        lateout("$24" /*$t8*/) _,
+        lateout("$25" /*$t9*/) _,
+        options(nostack, preserves_flags)
+    );
+    FromAsm::from_asm(if err != 0 {
+        (x0 as usize).wrapping_neg() as *mut _
+    } else {
+        x0
+    })
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall6_readonly(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+    a4: ArgReg<'_, A4>,
+    a5: ArgReg<'_, A5>,
+) -> RetReg<R0> {
+    let x0;
+    let err: usize;
+    asm!(
+        "syscall",
+        inlateout("$2" /*$v0*/) nr.to_asm() => x0,
+        in("$4" /*$a0*/) a0.to_asm(),
+        in("$5" /*$a1*/) a1.to_asm(),
+        in("$6" /*$a2*/) a2.to_asm(),
+        inlateout("$7" /*$a3*/) a3.to_asm() => err,
+        inlateout("$8" /*$a4*/) a4.to_asm() => _,
+        inlateout("$9" /*$a5*/) a5.to_asm() => _,
+        lateout("$10" /*$a6*/) _,
+        lateout("$11" /*$a7*/) _,
+        lateout("$12" /*$t0*/) _,
+        lateout("$13" /*$t1*/) _,
+        lateout("$14" /*$t2*/) _,
+        lateout("$15" /*$t3*/) _,
+        lateout("$24" /*$t8*/) _,
+        lateout("$25" /*$t9*/) _,
+        options(nostack, preserves_flags, readonly)
+    );
+    FromAsm::from_asm(if err != 0 {
+        (x0 as usize).wrapping_neg() as *mut _
+    } else {
+        x0
+    })
+}
diff --git a/vendor/rustix/src/imp/linux_raw/arch/inline/mod.rs b/vendor/rustix/src/imp/linux_raw/arch/inline/mod.rs
new file mode 100644
index 000000000..3e25e2149
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/arch/inline/mod.rs
@@ -0,0 +1,17 @@
+//! Inline asm for making system calls.
+//!
+//! Compilers should really have intrinsics for making system calls. They're
+//! much like regular calls, with custom calling conventions, and calling
+//! conventions are otherwise the compiler's job. But for now, use inline asm.
+
+#[cfg_attr(target_arch = "aarch64", path = "aarch64.rs")]
+#[cfg_attr(target_arch = "arm", path = "arm.rs")]
+#[cfg_attr(target_arch = "mips", path = "mips.rs")]
+#[cfg_attr(target_arch = "mips64", path = "mips64.rs")]
+#[cfg_attr(target_arch = "powerpc64", path = "powerpc64.rs")]
+#[cfg_attr(target_arch = "riscv64", path = "riscv64.rs")]
+#[cfg_attr(target_arch = "x86", path = "x86.rs")]
+#[cfg_attr(target_arch = "x86_64", path = "x86_64.rs")]
+mod target_arch;
+
+pub(in crate::imp) use self::target_arch::*;
diff --git a/vendor/rustix/src/imp/linux_raw/arch/inline/powerpc64.rs b/vendor/rustix/src/imp/linux_raw/arch/inline/powerpc64.rs
new file mode 100644
index 000000000..520bd4d79
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/arch/inline/powerpc64.rs
@@ -0,0 +1,411 @@
+//! powerpc64le Linux system calls.
+//!
+//! On powerpc64le, Linux indicates success or failure using `cr0.SO` rather
+//! than by returning a negative error code as most other architectures do. In
+//! theory we could immediately translate this into a `Result`, and it'd save a
+//! few branches. And in theory we could have specialized sequences for use
+//! with syscalls that are known to never fail. However, those would require
+//! more extensive changes in rustix's platform-independent code. For now, we
+//! check the flag and negate the error value to make PowerPC64 look like other
+//! architectures.
+
+use crate::imp::reg::{ArgReg, FromAsm, RetReg, SyscallNumber, ToAsm, A0, A1, A2, A3, A4, A5, R0};
+use core::arch::asm;
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall0_readonly(nr: SyscallNumber) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "sc",
+        "bns 0f",
+        "neg 3, 3",
+        "0:",
+        inlateout("r0") nr.to_asm() => _,
+        lateout("r3") r0,
+        lateout("r4") _,
+        lateout("r5") _,
+        lateout("r6") _,
+        lateout("r7") _,
+        lateout("r8") _,
+        lateout("r9") _,
+        lateout("r10") _,
+        lateout("r11") _,
+        lateout("r12") _,
+        lateout("cr0") _,
+        options(nostack, preserves_flags, readonly)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall1(nr: SyscallNumber<'_>, a0: ArgReg<'_, A0>) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "sc",
+        "bns 0f",
+        "neg 3, 3",
+        "0:",
+        inlateout("r0") nr.to_asm() => _,
+        inlateout("r3") a0.to_asm() => r0,
+        lateout("r4") _,
+        lateout("r5") _,
+        lateout("r6") _,
+        lateout("r7") _,
+        lateout("r8") _,
+        lateout("r9") _,
+        lateout("r10") _,
+        lateout("r11") _,
+        lateout("r12") _,
+        lateout("cr0") _,
+        options(nostack, preserves_flags)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall1_readonly(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "sc",
+        "bns 0f",
+        "neg 3, 3",
+        "0:",
+        inlateout("r0") nr.to_asm() => _,
+        inlateout("r3") a0.to_asm() => r0,
+        lateout("r4") _,
+        lateout("r5") _,
+        lateout("r6") _,
+        lateout("r7") _,
+        lateout("r8") _,
+        lateout("r9") _,
+        lateout("r10") _,
+        lateout("r11") _,
+        lateout("r12") _,
+        lateout("cr0") _,
+        options(nostack, preserves_flags, readonly)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall1_noreturn(nr: SyscallNumber<'_>, a0: ArgReg<'_, A0>) -> ! {
+    asm!(
+        "sc",
+        in("r0") nr.to_asm(),
+        in("r3") a0.to_asm(),
+        options(noreturn)
+    )
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall2(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "sc",
+        "bns 0f",
+        "neg 3, 3",
+        "0:",
+        inlateout("r0") nr.to_asm() => _,
+        inlateout("r3") a0.to_asm() => r0,
+        inlateout("r4") a1.to_asm() => _,
+        lateout("r5") _,
+        lateout("r6") _,
+        lateout("r7") _,
+        lateout("r8") _,
+        lateout("r9") _,
+        lateout("r10") _,
+        lateout("r11") _,
+        lateout("r12") _,
+        lateout("cr0") _,
+        options(nostack, preserves_flags)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall2_readonly(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "sc",
+        "bns 0f",
+        "neg 3, 3",
+        "0:",
+        inlateout("r0") nr.to_asm() => _,
+        inlateout("r3") a0.to_asm() => r0,
+        inlateout("r4") a1.to_asm() => _,
+        lateout("r5") _,
+        lateout("r6") _,
+        lateout("r7") _,
+        lateout("r8") _,
+        lateout("r9") _,
+        lateout("r10") _,
+        lateout("r11") _,
+        lateout("r12") _,
+        lateout("cr0") _,
+        options(nostack, preserves_flags, readonly)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall3(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "sc",
+        "bns 0f",
+        "neg 3, 3",
+        "0:",
+        inlateout("r0") nr.to_asm() => _,
+        inlateout("r3") a0.to_asm() => r0,
+        inlateout("r4") a1.to_asm() => _,
+        inlateout("r5") a2.to_asm() => _,
+        lateout("r6") _,
+        lateout("r7") _,
+        lateout("r8") _,
+        lateout("r9") _,
+        lateout("r10") _,
+        lateout("r11") _,
+        lateout("r12") _,
+        lateout("cr0") _,
+        options(nostack, preserves_flags)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall3_readonly(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "sc",
+        "bns 0f",
+        "neg 3, 3",
+        "0:",
+        inlateout("r0") nr.to_asm() => _,
+        inlateout("r3") a0.to_asm() => r0,
+        inlateout("r4") a1.to_asm() => _,
+        inlateout("r5") a2.to_asm() => _,
+        lateout("r6") _,
+        lateout("r7") _,
+        lateout("r8") _,
+        lateout("r9") _,
+        lateout("r10") _,
+        lateout("r11") _,
+        lateout("r12") _,
+        lateout("cr0") _,
+        options(nostack, preserves_flags, readonly)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall4(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "sc",
+        "bns 0f",
+        "neg 3, 3",
+        "0:",
+        inlateout("r0") nr.to_asm() => _,
+        inlateout("r3") a0.to_asm() => r0,
+        inlateout("r4") a1.to_asm() => _,
+        inlateout("r5") a2.to_asm() => _,
+        inlateout("r6") a3.to_asm() => _,
+        lateout("r7") _,
+        lateout("r8") _,
+        lateout("r9") _,
+        lateout("r10") _,
+        lateout("r11") _,
+        lateout("r12") _,
+        lateout("cr0") _,
+        options(nostack, preserves_flags)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall4_readonly(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "sc",
+        "bns 0f",
+        "neg 3, 3",
+        "0:",
+        inlateout("r0") nr.to_asm() => _,
+        inlateout("r3") a0.to_asm() => r0,
+        inlateout("r4") a1.to_asm() => _,
+        inlateout("r5") a2.to_asm() => _,
+        inlateout("r6") a3.to_asm() => _,
+        lateout("r7") _,
+        lateout("r8") _,
+        lateout("r9") _,
+        lateout("r10") _,
+        lateout("r11") _,
+        lateout("r12") _,
+        lateout("cr0") _,
+        options(nostack, preserves_flags, readonly)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall5(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+    a4: ArgReg<'_, A4>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "sc",
+        "bns 0f",
+        "neg 3, 3",
+        "0:",
+        inlateout("r0") nr.to_asm() => _,
+        inlateout("r3") a0.to_asm() => r0,
+        inlateout("r4") a1.to_asm() => _,
+        inlateout("r5") a2.to_asm() => _,
+        inlateout("r6") a3.to_asm() => _,
+        inlateout("r7") a4.to_asm() => _,
+        lateout("r8") _,
+        lateout("r9") _,
+        lateout("r10") _,
+        lateout("r11") _,
+        lateout("r12") _,
+        lateout("cr0") _,
+        options(nostack, preserves_flags)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall5_readonly(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+    a4: ArgReg<'_, A4>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "sc",
+        "bns 0f",
+        "neg 3, 3",
+        "0:",
+        inlateout("r0") nr.to_asm() => _,
+        inlateout("r3") a0.to_asm() => r0,
+        inlateout("r4") a1.to_asm() => _,
+        inlateout("r5") a2.to_asm() => _,
+        inlateout("r6") a3.to_asm() => _,
+        inlateout("r7") a4.to_asm() => _,
+        lateout("r8") _,
+        lateout("r9") _,
+        lateout("r10") _,
+        lateout("r11") _,
+        lateout("r12") _,
+        lateout("cr0") _,
+        options(nostack, preserves_flags, readonly)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall6(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+    a4: ArgReg<'_, A4>,
+    a5: ArgReg<'_, A5>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "sc",
+        "bns 0f",
+        "neg 3, 3",
+        "0:",
+        inlateout("r0") nr.to_asm() => _,
+        inlateout("r3") a0.to_asm() => r0,
+        inlateout("r4") a1.to_asm() => _,
+        inlateout("r5") a2.to_asm() => _,
+        inlateout("r6") a3.to_asm() => _,
+        inlateout("r7") a4.to_asm() => _,
+        inlateout("r8") a5.to_asm() => _,
+        lateout("r9") _,
+        lateout("r10") _,
+        lateout("r11") _,
+        lateout("r12") _,
+        lateout("cr0") _,
+        options(nostack, preserves_flags)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall6_readonly(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+    a4: ArgReg<'_, A4>,
+    a5: ArgReg<'_, A5>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "sc",
+        "bns 0f",
+        "neg 3, 3",
+        "0:",
+        inlateout("r0") nr.to_asm() => _,
+        inlateout("r3") a0.to_asm() => r0,
+        inlateout("r4") a1.to_asm() => _,
+        inlateout("r5") a2.to_asm() => _,
+        inlateout("r6") a3.to_asm() => _,
+        inlateout("r7") a4.to_asm() => _,
+        inlateout("r8") a5.to_asm() => _,
+        lateout("r9") _,
+        lateout("r10") _,
+        lateout("r11") _,
+        lateout("r12") _,
+        lateout("cr0") _,
+        options(nostack, preserves_flags, readonly)
+    );
+    FromAsm::from_asm(r0)
+}
diff --git a/vendor/rustix/src/imp/linux_raw/arch/inline/riscv64.rs b/vendor/rustix/src/imp/linux_raw/arch/inline/riscv64.rs
new file mode 100644
index 000000000..3ed36a16c
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/arch/inline/riscv64.rs
@@ -0,0 +1,263 @@
+//! riscv64 Linux system calls.
+
+use crate::imp::reg::{ArgReg, FromAsm, RetReg, SyscallNumber, ToAsm, A0, A1, A2, A3, A4, A5, R0};
+use core::arch::asm;
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall0_readonly(nr: SyscallNumber<'_>) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "ecall",
+        in("a7") nr.to_asm(),
+        lateout("a0") r0,
+        options(nostack, preserves_flags, readonly)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall1(nr: SyscallNumber<'_>, a0: ArgReg<'_, A0>) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "ecall",
+        in("a7") nr.to_asm(),
+        inlateout("a0") a0.to_asm() => r0,
+        options(nostack, preserves_flags)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall1_readonly(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "ecall",
+        in("a7") nr.to_asm(),
+        inlateout("a0") a0.to_asm() => r0,
+        options(nostack, preserves_flags, readonly)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall1_noreturn(nr: SyscallNumber<'_>, a0: ArgReg<'_, A0>) -> ! {
+    asm!(
+        "ecall",
+        in("a7") nr.to_asm(),
+        in("a0") a0.to_asm(),
+        options(noreturn)
+    );
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall2(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "ecall",
+        in("a7") nr.to_asm(),
+        inlateout("a0") a0.to_asm() => r0,
+        in("a1") a1.to_asm(),
+        options(nostack, preserves_flags)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall2_readonly(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "ecall",
+        in("a7") nr.to_asm(),
+        inlateout("a0") a0.to_asm() => r0,
+        in("a1") a1.to_asm(),
+        options(nostack, preserves_flags, readonly)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall3(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "ecall",
+        in("a7") nr.to_asm(),
+        inlateout("a0") a0.to_asm() => r0,
+        in("a1") a1.to_asm(),
+        in("a2") a2.to_asm(),
+        options(nostack, preserves_flags)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall3_readonly(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "ecall",
+        in("a7") nr.to_asm(),
+        inlateout("a0") a0.to_asm() => r0,
+        in("a1") a1.to_asm(),
+        in("a2") a2.to_asm(),
+        options(nostack, preserves_flags, readonly)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall4(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "ecall",
+        in("a7") nr.to_asm(),
+        inlateout("a0") a0.to_asm() => r0,
+        in("a1") a1.to_asm(),
+        in("a2") a2.to_asm(),
+        in("a3") a3.to_asm(),
+        options(nostack, preserves_flags)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall4_readonly(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "ecall",
+        in("a7") nr.to_asm(),
+        inlateout("a0") a0.to_asm() => r0,
+        in("a1") a1.to_asm(),
+        in("a2") a2.to_asm(),
+        in("a3") a3.to_asm(),
+        options(nostack, preserves_flags, readonly)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall5(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+    a4: ArgReg<'_, A4>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "ecall",
+        in("a7") nr.to_asm(),
+        inlateout("a0") a0.to_asm() => r0,
+        in("a1") a1.to_asm(),
+        in("a2") a2.to_asm(),
+        in("a3") a3.to_asm(),
+        in("a4") a4.to_asm(),
+        options(nostack, preserves_flags)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall5_readonly(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+    a4: ArgReg<'_, A4>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "ecall",
+        in("a7") nr.to_asm(),
+        inlateout("a0") a0.to_asm() => r0,
+        in("a1") a1.to_asm(),
+        in("a2") a2.to_asm(),
+        in("a3") a3.to_asm(),
+        in("a4") a4.to_asm(),
+        options(nostack, preserves_flags, readonly)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall6(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+    a4: ArgReg<'_, A4>,
+    a5: ArgReg<'_, A5>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "ecall",
+        in("a7") nr.to_asm(),
+        inlateout("a0") a0.to_asm() => r0,
+        in("a1") a1.to_asm(),
+        in("a2") a2.to_asm(),
+        in("a3") a3.to_asm(),
+        in("a4") a4.to_asm(),
+        in("a5") a5.to_asm(),
+        options(nostack, preserves_flags)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall6_readonly(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+    a4: ArgReg<'_, A4>,
+    a5: ArgReg<'_, A5>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "ecall",
+        in("a7") nr.to_asm(),
+        inlateout("a0") a0.to_asm() => r0,
+        in("a1") a1.to_asm(),
+        in("a2") a2.to_asm(),
+        in("a3") a3.to_asm(),
+        in("a4") a4.to_asm(),
+        in("a5") a5.to_asm(),
+        options(nostack, preserves_flags, readonly)
+    );
+    FromAsm::from_asm(r0)
+}
diff --git a/vendor/rustix/src/imp/linux_raw/arch/inline/x86.rs b/vendor/rustix/src/imp/linux_raw/arch/inline/x86.rs
new file mode 100644
index 000000000..8d1b4ed0a
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/arch/inline/x86.rs
@@ -0,0 +1,492 @@
+//! 32-bit x86 Linux system calls.
+//!
+//! There are two forms; `indirect_*` which take a callee, which allow calling
+//! through the vDSO when possible, and plain forms, which use the `int 0x80`
+//! instruction.
+//!
+//! Most `rustix` syscalls use the vsyscall mechanism rather than going using
+//! `int 0x80` sequences.
+
+#![allow(dead_code)]
+
+use crate::imp::reg::{ArgReg, FromAsm, RetReg, SyscallNumber, ToAsm, A0, A1, A2, A3, A4, A5, R0};
+use crate::imp::vdso_wrappers::SyscallType;
+use core::arch::asm;
+
+#[inline]
+pub(in crate::imp) unsafe fn indirect_syscall0(
+    callee: SyscallType,
+    nr: SyscallNumber<'_>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "call {callee}",
+        callee = in(reg) callee,
+        inlateout("eax") nr.to_asm() => r0,
+        options(preserves_flags)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn indirect_syscall1(
+    callee: SyscallType,
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "call {callee}",
+        callee = in(reg) callee,
+        inlateout("eax") nr.to_asm() => r0,
+        in("ebx") a0.to_asm(),
+        options(preserves_flags)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn indirect_syscall1_noreturn(
+    callee: SyscallType,
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+) -> ! {
+    asm!(
+        "call {callee}",
+        callee = in(reg) callee,
+        in("eax") nr.to_asm(),
+        in("ebx") a0.to_asm(),
+        options(noreturn)
+    )
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn indirect_syscall2(
+    callee: SyscallType,
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "call {callee}",
+        callee = in(reg) callee,
+        inlateout("eax") nr.to_asm() => r0,
+        in("ebx") a0.to_asm(),
+        in("ecx") a1.to_asm(),
+        options(preserves_flags)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn indirect_syscall3(
+    callee: SyscallType,
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "call {callee}",
+        callee = in(reg) callee,
+        inlateout("eax") nr.to_asm() => r0,
+        in("ebx") a0.to_asm(),
+        in("ecx") a1.to_asm(),
+        in("edx") a2.to_asm(),
+        options(preserves_flags)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn indirect_syscall4(
+    callee: SyscallType,
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+) -> RetReg<R0> {
+    let r0;
+    // a3 should go in esi, but `asm!` won't let us use it as an operand.
+    // temporarily swap it into place, and then swap it back afterward.
+    //
+    // We hard-code the callee operand to use edi instead of `in(reg)` because
+    // even though we can't name esi as an operand, the compiler can use esi to
+    // satisfy `in(reg)`.
+    asm!(
+        "xchg esi, {a3}",
+        "call edi",
+        "xchg esi, {a3}",
+        a3 = in(reg) a3.to_asm(),
+        in("edi") callee,
+        inlateout("eax") nr.to_asm() => r0,
+        in("ebx") a0.to_asm(),
+        in("ecx") a1.to_asm(),
+        in("edx") a2.to_asm(),
+        options(preserves_flags)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn indirect_syscall5(
+    callee: SyscallType,
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+    a4: ArgReg<'_, A4>,
+) -> RetReg<R0> {
+    let r0;
+    // Oof. a3 should go in esi, and `asm!` won't let us use that register as
+    // an operand. And we can't request stack slots. And there are no other
+    // registers free. Use eax as a temporary pointer to a slice, since it
+    // gets clobbered as the return value anyway.
+    asm!(
+        "push esi",
+        "push DWORD PTR [eax + 0]",
+        "mov esi, DWORD PTR [eax + 4]",
+        "mov eax, DWORD PTR [eax + 8]",
+        "call DWORD PTR [esp]",
+        "pop esi",
+        "pop esi",
+        inout("eax") &[callee as _, a3.to_asm(), nr.to_asm()] => r0,
+        in("ebx") a0.to_asm(),
+        in("ecx") a1.to_asm(),
+        in("edx") a2.to_asm(),
+        in("edi") a4.to_asm(),
+        options(preserves_flags)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[allow(clippy::too_many_arguments)]
+#[inline]
+pub(in crate::imp) unsafe fn indirect_syscall6(
+    callee: SyscallType,
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+    a4: ArgReg<'_, A4>,
+    a5: ArgReg<'_, A5>,
+) -> RetReg<R0> {
+    let r0;
+    // Oof again. a3 should go in esi, and a5 should go in ebp, and `asm!`
+    // won't let us use either of those registers as operands. And we can't
+    // request stack slots. And there are no other registers free. Use eax as a
+    // temporary pointer to a slice, since it gets clobbered as the return
+    // value anyway.
+    //
+    // This is another reason that syscalls should be compiler intrinsics
+    // rather than inline asm.
+    asm!(
+        "push ebp",
+        "push esi",
+        "push DWORD PTR [eax + 0]",
+        "mov esi, DWORD PTR [eax + 4]",
+        "mov ebp, DWORD PTR [eax + 8]",
+        "mov eax, DWORD PTR [eax + 12]",
+        "call DWORD PTR [esp]",
+        "pop esi",
+        "pop esi",
+        "pop ebp",
+        inout("eax") &[callee as _, a3.to_asm(), a5.to_asm(), nr.to_asm()] => r0,
+        in("ebx") a0.to_asm(),
+        in("ecx") a1.to_asm(),
+        in("edx") a2.to_asm(),
+        in("edi") a4.to_asm(),
+        options(preserves_flags)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall0_readonly(nr: SyscallNumber<'_>) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "int $$0x80",
+        inlateout("eax") nr.to_asm() => r0,
+        options(nostack, preserves_flags, readonly)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall1(nr: SyscallNumber<'_>, a0: ArgReg<'_, A0>) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "int $$0x80",
+        inlateout("eax") nr.to_asm() => r0,
+        in("ebx") a0.to_asm(),
+        options(nostack, preserves_flags)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall1_readonly(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "int $$0x80",
+        inlateout("eax") nr.to_asm() => r0,
+        in("ebx") a0.to_asm(),
+        options(nostack, preserves_flags, readonly)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall1_noreturn(nr: SyscallNumber<'_>, a0: ArgReg<'_, A0>) -> ! {
+    asm!(
+        "int $$0x80",
+        in("eax") nr.to_asm(),
+        in("ebx") a0.to_asm(),
+        options(noreturn)
+    )
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall2(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "int $$0x80",
+        inlateout("eax") nr.to_asm() => r0,
+        in("ebx") a0.to_asm(),
+        in("ecx") a1.to_asm(),
+        options(nostack, preserves_flags)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall2_readonly(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "int $$0x80",
+        inlateout("eax") nr.to_asm() => r0,
+        in("ebx") a0.to_asm(),
+        in("ecx") a1.to_asm(),
+        options(nostack, preserves_flags, readonly)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall3(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "int $$0x80",
+        inlateout("eax") nr.to_asm() => r0,
+        in("ebx") a0.to_asm(),
+        in("ecx") a1.to_asm(),
+        in("edx") a2.to_asm(),
+        options(nostack, preserves_flags)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall3_readonly(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "int $$0x80",
+        inlateout("eax") nr.to_asm() => r0,
+        in("ebx") a0.to_asm(),
+        in("ecx") a1.to_asm(),
+        in("edx") a2.to_asm(),
+        options(nostack, preserves_flags, readonly)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall4(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+) -> RetReg<R0> {
+    let r0;
+    // a3 should go in esi, but `asm!` won't let us use it as an operand.
+    // Temporarily swap it into place, and then swap it back afterward.
+    asm!(
+        "xchg esi, {a3}",
+        "int $$0x80",
+        "xchg esi, {a3}",
+        a3 = in(reg) a3.to_asm(),
+        inlateout("eax") nr.to_asm() => r0,
+        in("ebx") a0.to_asm(),
+        in("ecx") a1.to_asm(),
+        in("edx") a2.to_asm(),
+        options(nostack, preserves_flags)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall4_readonly(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "xchg esi, {a3}",
+        "int $$0x80",
+        "xchg esi, {a3}",
+        a3 = in(reg) a3.to_asm(),
+        inlateout("eax") nr.to_asm() => r0,
+        in("ebx") a0.to_asm(),
+        in("ecx") a1.to_asm(),
+        in("edx") a2.to_asm(),
+        options(nostack, preserves_flags, readonly)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall5(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+    a4: ArgReg<'_, A4>,
+) -> RetReg<R0> {
+    let r0;
+    // As in `syscall4`, use xchg to handle a3. a4 should go in edi, and we can
+    // use that register as an operand. Unlike in `indirect_syscall5`, we don't
+    // have a `callee` operand taking up a register, so we have enough
+    // registers and don't need to use a slice.
+    asm!(
+        "xchg esi, {a3}",
+        "int $$0x80",
+        "xchg esi, {a3}",
+        a3 = in(reg) a3.to_asm(),
+        inlateout("eax") nr.to_asm() => r0,
+        in("ebx") a0.to_asm(),
+        in("ecx") a1.to_asm(),
+        in("edx") a2.to_asm(),
+        in("edi") a4.to_asm(),
+        options(nostack, preserves_flags)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall5_readonly(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+    a4: ArgReg<'_, A4>,
+) -> RetReg<R0> {
+    let r0;
+    // See the comments in `syscall5`.
+    asm!(
+        "xchg esi, {a3}",
+        "int $$0x80",
+        "xchg esi, {a3}",
+        a3 = in(reg) a3.to_asm(),
+        inlateout("eax") nr.to_asm() => r0,
+        in("ebx") a0.to_asm(),
+        in("ecx") a1.to_asm(),
+        in("edx") a2.to_asm(),
+        in("edi") a4.to_asm(),
+        options(nostack, preserves_flags, readonly)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall6(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+    a4: ArgReg<'_, A4>,
+    a5: ArgReg<'_, A5>,
+) -> RetReg<R0> {
+    let r0;
+    // See the comments in `indirect_syscall6`.
+    asm!(
+        "push ebp",
+        "push esi",
+        "mov esi, DWORD PTR [eax + 0]",
+        "mov ebp, DWORD PTR [eax + 4]",
+        "mov eax, DWORD PTR [eax + 8]",
+        "int $$0x80",
+        "pop esi",
+        "pop ebp",
+        inout("eax") &[a3.to_asm(), a5.to_asm(), nr.to_asm()] => r0,
+        in("ebx") a0.to_asm(),
+        in("ecx") a1.to_asm(),
+        in("edx") a2.to_asm(),
+        in("edi") a4.to_asm(),
+        options(preserves_flags)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall6_readonly(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+    a4: ArgReg<'_, A4>,
+    a5: ArgReg<'_, A5>,
+) -> RetReg<R0> {
+    let r0;
+    // See the comments in `indirect_syscall6`.
+    asm!(
+        "push ebp",
+        "push esi",
+        "mov esi, DWORD PTR [eax + 0]",
+        "mov ebp, DWORD PTR [eax + 4]",
+        "mov eax, DWORD PTR [eax + 8]",
+        "int $$0x80",
+        "pop esi",
+        "pop ebp",
+        inout("eax") &[a3.to_asm(), a5.to_asm(), nr.to_asm()] => r0,
+        in("ebx") a0.to_asm(),
+        in("ecx") a1.to_asm(),
+        in("edx") a2.to_asm(),
+        in("edi") a4.to_asm(),
+        options(preserves_flags, readonly)
+    );
+    FromAsm::from_asm(r0)
+}
diff --git a/vendor/rustix/src/imp/linux_raw/arch/inline/x86_64.rs b/vendor/rustix/src/imp/linux_raw/arch/inline/x86_64.rs
new file mode 100644
index 000000000..75d6124f7
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/arch/inline/x86_64.rs
@@ -0,0 +1,291 @@
+//! x86-64 Linux system calls.
+
+use crate::imp::reg::{ArgReg, FromAsm, RetReg, SyscallNumber, ToAsm, A0, A1, A2, A3, A4, A5, R0};
+use core::arch::asm;
+
+#[cfg(target_pointer_width = "32")]
+compile_error!("x32 is not yet supported");
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall0_readonly(nr: SyscallNumber<'_>) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "syscall",
+        inlateout("rax") nr.to_asm() => r0,
+        lateout("rcx") _,
+        lateout("r11") _,
+        options(nostack, preserves_flags, readonly)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall1(nr: SyscallNumber<'_>, a0: ArgReg<'_, A0>) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "syscall",
+        inlateout("rax") nr.to_asm() => r0,
+        in("rdi") a0.to_asm(),
+        lateout("rcx") _,
+        lateout("r11") _,
+        options(nostack, preserves_flags)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall1_readonly(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "syscall",
+        inlateout("rax") nr.to_asm() => r0,
+        in("rdi") a0.to_asm(),
+        lateout("rcx") _,
+        lateout("r11") _,
+        options(nostack, preserves_flags, readonly)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall1_noreturn(nr: SyscallNumber<'_>, a0: ArgReg<'_, A0>) -> ! {
+    asm!(
+        "syscall",
+        in("rax") nr.to_asm(),
+        in("rdi") a0.to_asm(),
+        options(noreturn)
+    )
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall2(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "syscall",
+        inlateout("rax") nr.to_asm() => r0,
+        in("rdi") a0.to_asm(),
+        in("rsi") a1.to_asm(),
+        lateout("rcx") _,
+        lateout("r11") _,
+        options(nostack, preserves_flags)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall2_readonly(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "syscall",
+        inlateout("rax") nr.to_asm() => r0,
+        in("rdi") a0.to_asm(),
+        in("rsi") a1.to_asm(),
+        lateout("rcx") _,
+        lateout("r11") _,
+        options(nostack, preserves_flags, readonly)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall3(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "syscall",
+        inlateout("rax") nr.to_asm() => r0,
+        in("rdi") a0.to_asm(),
+        in("rsi") a1.to_asm(),
+        in("rdx") a2.to_asm(),
+        lateout("rcx") _,
+        lateout("r11") _,
+        options(nostack, preserves_flags)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall3_readonly(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "syscall",
+        inlateout("rax") nr.to_asm() => r0,
+        in("rdi") a0.to_asm(),
+        in("rsi") a1.to_asm(),
+        in("rdx") a2.to_asm(),
+        lateout("rcx") _,
+        lateout("r11") _,
+        options(nostack, preserves_flags, readonly)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall4(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "syscall",
+        inlateout("rax") nr.to_asm() => r0,
+        in("rdi") a0.to_asm(),
+        in("rsi") a1.to_asm(),
+        in("rdx") a2.to_asm(),
+        in("r10") a3.to_asm(),
+        lateout("rcx") _,
+        lateout("r11") _,
+        options(nostack, preserves_flags)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall4_readonly(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "syscall",
+        inlateout("rax") nr.to_asm() => r0,
+        in("rdi") a0.to_asm(),
+        in("rsi") a1.to_asm(),
+        in("rdx") a2.to_asm(),
+        in("r10") a3.to_asm(),
+        lateout("rcx") _,
+        lateout("r11") _,
+        options(nostack, preserves_flags, readonly)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall5(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+    a4: ArgReg<'_, A4>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "syscall",
+        inlateout("rax") nr.to_asm() => r0,
+        in("rdi") a0.to_asm(),
+        in("rsi") a1.to_asm(),
+        in("rdx") a2.to_asm(),
+        in("r10") a3.to_asm(),
+        in("r8") a4.to_asm(),
+        lateout("rcx") _,
+        lateout("r11") _,
+        options(nostack, preserves_flags)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall5_readonly(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+    a4: ArgReg<'_, A4>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "syscall",
+        inlateout("rax") nr.to_asm() => r0,
+        in("rdi") a0.to_asm(),
+        in("rsi") a1.to_asm(),
+        in("rdx") a2.to_asm(),
+        in("r10") a3.to_asm(),
+        in("r8") a4.to_asm(),
+        lateout("rcx") _,
+        lateout("r11") _,
+        options(nostack, preserves_flags, readonly)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall6(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+    a4: ArgReg<'_, A4>,
+    a5: ArgReg<'_, A5>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "syscall",
+        inlateout("rax") nr.to_asm() => r0,
+        in("rdi") a0.to_asm(),
+        in("rsi") a1.to_asm(),
+        in("rdx") a2.to_asm(),
+        in("r10") a3.to_asm(),
+        in("r8") a4.to_asm(),
+        in("r9") a5.to_asm(),
+        lateout("rcx") _,
+        lateout("r11") _,
+        options(nostack, preserves_flags)
+    );
+    FromAsm::from_asm(r0)
+}
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall6_readonly(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+    a4: ArgReg<'_, A4>,
+    a5: ArgReg<'_, A5>,
+) -> RetReg<R0> {
+    let r0;
+    asm!(
+        "syscall",
+        inlateout("rax") nr.to_asm() => r0,
+        in("rdi") a0.to_asm(),
+        in("rsi") a1.to_asm(),
+        in("rdx") a2.to_asm(),
+        in("r10") a3.to_asm(),
+        in("r8") a4.to_asm(),
+        in("r9") a5.to_asm(),
+        lateout("rcx") _,
+        lateout("r11") _,
+        options(nostack, preserves_flags, readonly)
+    );
+    FromAsm::from_asm(r0)
+}
diff --git a/vendor/rustix/src/imp/linux_raw/arch/mod.rs b/vendor/rustix/src/imp/linux_raw/arch/mod.rs
new file mode 100644
index 000000000..81f3a255e
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/arch/mod.rs
@@ -0,0 +1,218 @@
+//! Architecture-specific syscall code.
+//!
+//! `rustix` has inline assembly sequences using `asm!`, but that requires
+//! nightly Rust, so it also has out-of-line ("outline") assembly sequences
+//! in .s files. And 32-bit x86 is special (see comments below).
+//!
+//! This module also has a `choose` submodule which chooses a scheme and is
+//! what most of the `rustix` syscalls use.
+//!
+//! # Safety
+//!
+//! This contains the inline `asm` statements performing the syscall
+//! instructions and FFI declarations declaring the out-of-line ("outline")
+//! syscall instructions.
+
+#![allow(unsafe_code)]
+#![cfg_attr(not(feature = "all-apis"), allow(unused_imports))]
+
+// When inline asm is available, use it. Otherwise, use out-of-line asm. These
+// functions always use the machine's syscall instruction, even when it isn't
+// the fastest option available.
+#[cfg_attr(asm, path = "inline/mod.rs")]
+#[cfg_attr(not(asm), path = "outline/mod.rs")]
+pub(in crate::imp) mod asm;
+
+// On most architectures, the architecture syscall instruction is fast, so use
+// it directly.
+#[cfg(any(
+    target_arch = "arm",
+    target_arch = "aarch64",
+    target_arch = "mips",
+    target_arch = "mips64",
+    target_arch = "powerpc64",
+    target_arch = "riscv64",
+    target_arch = "x86_64",
+))]
+pub(in crate::imp) use self::asm as choose;
+
+// On 32-bit x86, use vDSO wrappers for all syscalls. We could use the
+// architecture syscall instruction (`int 0x80`), but the vDSO kernel_vsyscall
+// mechanism is much faster.
+#[cfg(target_arch = "x86")]
+pub(in crate::imp) use super::vdso_wrappers::x86_via_vdso as choose;
+
+// This would be the code for always using `int 0x80` on 32-bit x86.
+//#[cfg(target_arch = "x86")]
+//pub(in crate::imp) use self::asm as choose;
+
+// Macros for invoking system calls.
+//
+// These factor out:
+//  - Calling `nr` on the syscall number to convert it into `SyscallNumber`.
+//  - Calling `.into()` on each of the arguments to convert them into `ArgReg`.
+//  - Qualifying the `syscall*` and `__NR_*` identifiers.
+//  - Counting the number of arguments.
+macro_rules! syscall {
+    ($nr:ident) => {
+        $crate::imp::arch::choose::syscall0($crate::imp::reg::nr(linux_raw_sys::general::$nr))
+    };
+
+    ($nr:ident, $a0:expr) => {
+        $crate::imp::arch::choose::syscall1(
+            $crate::imp::reg::nr(linux_raw_sys::general::$nr),
+            $a0.into(),
+        )
+    };
+
+    ($nr:ident, $a0:expr, $a1:expr) => {
+        $crate::imp::arch::choose::syscall2(
+            $crate::imp::reg::nr(linux_raw_sys::general::$nr),
+            $a0.into(),
+            $a1.into(),
+        )
+    };
+
+    ($nr:ident, $a0:expr, $a1:expr, $a2:expr) => {
+        $crate::imp::arch::choose::syscall3(
+            $crate::imp::reg::nr(linux_raw_sys::general::$nr),
+            $a0.into(),
+            $a1.into(),
+            $a2.into(),
+        )
+    };
+
+    ($nr:ident, $a0:expr, $a1:expr, $a2:expr, $a3:expr) => {
+        $crate::imp::arch::choose::syscall4(
+            $crate::imp::reg::nr(linux_raw_sys::general::$nr),
+            $a0.into(),
+            $a1.into(),
+            $a2.into(),
+            $a3.into(),
+        )
+    };
+
+    ($nr:ident, $a0:expr, $a1:expr, $a2:expr, $a3:expr, $a4:expr) => {
+        $crate::imp::arch::choose::syscall5(
+            $crate::imp::reg::nr(linux_raw_sys::general::$nr),
+            $a0.into(),
+            $a1.into(),
+            $a2.into(),
+            $a3.into(),
+            $a4.into(),
+        )
+    };
+
+    ($nr:ident, $a0:expr, $a1:expr, $a2:expr, $a3:expr, $a4:expr, $a5:expr) => {
+        $crate::imp::arch::choose::syscall6(
+            $crate::imp::reg::nr(linux_raw_sys::general::$nr),
+            $a0.into(),
+            $a1.into(),
+            $a2.into(),
+            $a3.into(),
+            $a4.into(),
+            $a5.into(),
+        )
+    };
+
+    ($nr:ident, $a0:expr, $a1:expr, $a2:expr, $a3:expr, $a4:expr, $a5:expr, $a6:expr) => {
+        $crate::imp::arch::choose::syscall7(
+            $crate::imp::reg::nr(linux_raw_sys::general::$nr),
+            $a0.into(),
+            $a1.into(),
+            $a2.into(),
+            $a3.into(),
+            $a4.into(),
+            $a5.into(),
+            $a6.into(),
+        )
+    };
+}
+
+macro_rules! syscall_readonly {
+    ($nr:ident) => {
+        $crate::imp::arch::choose::syscall0_readonly($crate::imp::reg::nr(
+            linux_raw_sys::general::$nr,
+        ))
+    };
+
+    ($nr:ident, $a0:expr) => {
+        $crate::imp::arch::choose::syscall1_readonly(
+            $crate::imp::reg::nr(linux_raw_sys::general::$nr),
+            $a0.into(),
+        )
+    };
+
+    ($nr:ident, $a0:expr, $a1:expr) => {
+        $crate::imp::arch::choose::syscall2_readonly(
+            $crate::imp::reg::nr(linux_raw_sys::general::$nr),
+            $a0.into(),
+            $a1.into(),
+        )
+    };
+
+    ($nr:ident, $a0:expr, $a1:expr, $a2:expr) => {
+        $crate::imp::arch::choose::syscall3_readonly(
+            $crate::imp::reg::nr(linux_raw_sys::general::$nr),
+            $a0.into(),
+            $a1.into(),
+            $a2.into(),
+        )
+    };
+
+    ($nr:ident, $a0:expr, $a1:expr, $a2:expr, $a3:expr) => {
+        $crate::imp::arch::choose::syscall4_readonly(
+            $crate::imp::reg::nr(linux_raw_sys::general::$nr),
+            $a0.into(),
+            $a1.into(),
+            $a2.into(),
+            $a3.into(),
+        )
+    };
+
+    ($nr:ident, $a0:expr, $a1:expr, $a2:expr, $a3:expr, $a4:expr) => {
+        $crate::imp::arch::choose::syscall5_readonly(
+            $crate::imp::reg::nr(linux_raw_sys::general::$nr),
+            $a0.into(),
+            $a1.into(),
+            $a2.into(),
+            $a3.into(),
+            $a4.into(),
+        )
+    };
+
+    ($nr:ident, $a0:expr, $a1:expr, $a2:expr, $a3:expr, $a4:expr, $a5:expr) => {
+        $crate::imp::arch::choose::syscall6_readonly(
+            $crate::imp::reg::nr(linux_raw_sys::general::$nr),
+            $a0.into(),
+            $a1.into(),
+            $a2.into(),
+            $a3.into(),
+            $a4.into(),
+            $a5.into(),
+        )
+    };
+
+    ($nr:ident, $a0:expr, $a1:expr, $a2:expr, $a3:expr, $a4:expr, $a5:expr, $a6:expr) => {
+        $crate::imp::arch::choose::syscall7_readonly(
+            $crate::imp::reg::nr(linux_raw_sys::general::$nr),
+            $a0.into(),
+            $a1.into(),
+            $a2.into(),
+            $a3.into(),
+            $a4.into(),
+            $a5.into(),
+            $a6.into(),
+        )
+    };
+}
+
+#[cfg(feature = "runtime")]
+macro_rules! syscall_noreturn {
+    ($nr:ident, $a0:expr) => {
+        $crate::imp::arch::choose::syscall1_noreturn(
+            $crate::imp::reg::nr(linux_raw_sys::general::$nr),
+            $a0.into(),
+        )
+    };
+}
diff --git a/vendor/rustix/src/imp/linux_raw/arch/outline/aarch64.s b/vendor/rustix/src/imp/linux_raw/arch/outline/aarch64.s
new file mode 100644
index 000000000..1fad2fa6d
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/arch/outline/aarch64.s
@@ -0,0 +1,119 @@
+// Assembly code for making aarch64 syscalls.
+//
+// aarch64 syscall argument register ordering is the same as the aarch64
+// userspace argument register ordering except that the syscall number
+// (nr) is passed in w8.
+//
+// outline.rs takes care of reordering the nr argument to the end for us,
+// so we only need to move nr into w8.
+//
+// arm64-ilp32 is not yet supported.
+
+    .file       "aarch64.s"
+    .arch       armv8-a
+
+    .section    .text.rustix_syscall0_nr_last,"ax",@progbits
+    .p2align    2
+    .weak       rustix_syscall0_nr_last
+    .hidden     rustix_syscall0_nr_last
+    .type       rustix_syscall0_nr_last, @function
+rustix_syscall0_nr_last:
+    .cfi_startproc
+    mov    w8, w0
+    svc    #0
+    ret
+    .cfi_endproc
+    .size rustix_syscall0_nr_last, .-rustix_syscall0_nr_last
+
+    .section    .text.rustix_syscall1_nr_last,"ax",@progbits
+    .p2align    2
+    .weak       rustix_syscall1_nr_last
+    .hidden     rustix_syscall1_nr_last
+    .type       rustix_syscall1_nr_last, @function
+rustix_syscall1_nr_last:
+    .cfi_startproc
+    mov    w8, w1
+    svc    #0
+    ret
+    .cfi_endproc
+    .size rustix_syscall1_nr_last, .-rustix_syscall1_nr_last
+
+    .section    .text.rustix_syscall1_noreturn_nr_last,"ax",@progbits
+    .p2align    2
+    .weak       rustix_syscall1_noreturn_nr_last
+    .hidden     rustix_syscall1_noreturn_nr_last
+    .type       rustix_syscall1_noreturn_nr_last, @function
+rustix_syscall1_noreturn_nr_last:
+    .cfi_startproc
+    mov    w8, w1
+    svc    #0
+    brk    #0x1
+    .cfi_endproc
+    .size rustix_syscall1_noreturn_nr_last, .-rustix_syscall1_noreturn_nr_last
+
+    .section    .text.rustix_syscall2_nr_last,"ax",@progbits
+    .p2align    2
+    .weak       rustix_syscall2_nr_last
+    .hidden     rustix_syscall2_nr_last
+    .type       rustix_syscall2_nr_last, @function
+rustix_syscall2_nr_last:
+    .cfi_startproc
+    mov    w8, w2
+    svc    #0
+    ret
+    .cfi_endproc
+    .size rustix_syscall2_nr_last, .-rustix_syscall2_nr_last
+
+    .section    .text.rustix_syscall3_nr_last,"ax",@progbits
+    .p2align    2
+    .weak       rustix_syscall3_nr_last
+    .hidden     rustix_syscall3_nr_last
+    .type       rustix_syscall3_nr_last, @function
+rustix_syscall3_nr_last:
+    .cfi_startproc
+    mov    w8, w3
+    svc    #0
+    ret
+    .cfi_endproc
+    .size rustix_syscall3_nr_last, .-rustix_syscall3_nr_last
+
+    .section    .text.rustix_syscall4_nr_last,"ax",@progbits
+    .p2align    2
+    .weak       rustix_syscall4_nr_last
+    .hidden     rustix_syscall4_nr_last
+    .type       rustix_syscall4_nr_last, @function
+rustix_syscall4_nr_last:
+    .cfi_startproc
+    mov    w8, w4
+    svc    #0
+    ret
+    .cfi_endproc
+    .size rustix_syscall4_nr_last, .-rustix_syscall4_nr_last
+
+    .section    .text.rustix_syscall5_nr_last,"ax",@progbits
+    .p2align    2
+    .weak       rustix_syscall5_nr_last
+    .hidden     rustix_syscall5_nr_last
+    .type       rustix_syscall5_nr_last, @function
+rustix_syscall5_nr_last:
+    .cfi_startproc
+    mov    w8, w5
+    svc    #0
+    ret
+    .cfi_endproc
+    .size rustix_syscall5_nr_last, .-rustix_syscall5_nr_last
+
+    .section    .text.rustix_syscall6_nr_last,"ax",@progbits
+    .p2align    2
+    .weak       rustix_syscall6_nr_last
+    .hidden     rustix_syscall6_nr_last
+    .type       rustix_syscall6_nr_last, @function
+rustix_syscall6_nr_last:
+    .cfi_startproc
+    mov    w8, w6
+    svc    #0
+    ret
+    .cfi_endproc
+    .size rustix_syscall6_nr_last, .-rustix_syscall6_nr_last
+
+    .section .note.GNU-stack,"",@progbits
diff --git a/vendor/rustix/src/imp/linux_raw/arch/outline/arm.s b/vendor/rustix/src/imp/linux_raw/arch/outline/arm.s
new file mode 100644
index 000000000..7001686f1
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/arch/outline/arm.s
@@ -0,0 +1,135 @@
+// Assembly code for making arm syscalls.
+//
+// arm syscall argument register ordering is the similar to the arm
+// userspace argument register ordering except that the syscall number
+// (nr) is passed in r7.
+//
+// nr_last.rs takes care of reordering the nr argument to the end for us,
+// so we only need to move nr into r7 and take care of r4 and r5 if needed.
+
+    .file       "arm.s"
+    .arch       armv5t
+
+    .section    .text.rustix_syscall0_nr_last,"ax",%progbits
+    .p2align    4
+    .weak       rustix_syscall0_nr_last
+    .hidden     rustix_syscall0_nr_last
+    .type       rustix_syscall0_nr_last, %function
+rustix_syscall0_nr_last:
+    .fnstart
+    .cantunwind
+    push    {r7, lr}
+    mov     r7, r0
+    svc     #0
+    pop     {r7, pc}
+    .fnend
+    .size rustix_syscall0_nr_last, .-rustix_syscall0_nr_last
+
+    .section    .text.rustix_syscall1_nr_last,"ax",%progbits
+    .p2align 4
+    .weak       rustix_syscall1_nr_last
+    .hidden     rustix_syscall1_nr_last
+    .type       rustix_syscall1_nr_last, %function
+rustix_syscall1_nr_last:
+    .fnstart
+    .cantunwind
+    push    {r7, lr}
+    mov     r7, r1
+    svc     #0
+    pop     {r7, pc}
+    .fnend
+    .size rustix_syscall1_nr_last, .-rustix_syscall1_nr_last
+
+    .section    .text.rustix_syscall1_noreturn_nr_last,"ax",%progbits
+    .p2align    4
+    .weak       rustix_syscall1_noreturn_nr_last
+    .hidden     rustix_syscall1_noreturn_nr_last
+    .type       rustix_syscall1_noreturn_nr_last, %function
+rustix_syscall1_noreturn_nr_last:
+    .fnstart
+    .cantunwind
+    // Don't save r7 and lr; this is noreturn, so we'll never restore them.
+    mov     r7, r1
+    svc     #0
+    udf     #16 // Trap instruction
+    .fnend
+    .size rustix_syscall1_noreturn_nr_last, .-rustix_syscall1_noreturn_nr_last
+
+    .section    .text.rustix_syscall2_nr_last,"ax",%progbits
+    .p2align 4
+    .weak       rustix_syscall2_nr_last
+    .hidden     rustix_syscall2_nr_last
+    .type       rustix_syscall2_nr_last, %function
+rustix_syscall2_nr_last:
+    .fnstart
+    .cantunwind
+    push    {r7, lr}
+    mov     r7, r2
+    svc     #0
+    pop     {r7, pc}
+    .fnend
+    .size rustix_syscall2_nr_last, .-rustix_syscall2_nr_last
+
+    .section    .text.rustix_syscall3_nr_last,"ax",%progbits
+    .p2align 4
+    .weak       rustix_syscall3_nr_last
+    .hidden     rustix_syscall3_nr_last
+    .type       rustix_syscall3_nr_last, %function
+rustix_syscall3_nr_last:
+    .fnstart
+    .cantunwind
+    push    {r7, lr}
+    mov     r7, r3
+    svc     #0
+    pop     {r7, pc}
+    .fnend
+    .size rustix_syscall3_nr_last, .-rustix_syscall3_nr_last
+
+    .section    .text.rustix_syscall4_nr_last,"ax",%progbits
+    .p2align 4
+    .weak       rustix_syscall4_nr_last
+    .hidden     rustix_syscall4_nr_last
+    .type       rustix_syscall4_nr_last, %function
+rustix_syscall4_nr_last:
+    .fnstart
+    .cantunwind
+    push    {r7, lr}
+    ldr     r7, [sp, #8]
+    svc     #0
+    pop     {r7, pc}
+    .fnend
+    .size rustix_syscall4_nr_last, .-rustix_syscall4_nr_last
+
+    .section    .text.rustix_syscall5_nr_last,"ax",%progbits
+    .p2align 4
+    .weak       rustix_syscall5_nr_last
+    .hidden     rustix_syscall5_nr_last
+    .type       rustix_syscall5_nr_last, %function
+rustix_syscall5_nr_last:
+    .fnstart
+    .cantunwind
+    push    {r4, r7, r11, lr}
+    ldr     r7, [sp, #20]
+    ldr     r4, [sp, #16]
+    svc     #0
+    pop     {r4, r7, r11, pc}
+    .fnend
+    .size rustix_syscall5_nr_last, .-rustix_syscall5_nr_last
+
+    .section    .text.rustix_syscall6_nr_last,"ax",%progbits
+    .p2align 4
+    .weak       rustix_syscall6_nr_last
+    .hidden     rustix_syscall6_nr_last
+    .type       rustix_syscall6_nr_last, %function
+rustix_syscall6_nr_last:
+    .fnstart
+    .cantunwind
+    push    {r4, r5, r7, lr}
+    add     r7, sp, #16
+    ldm     r7, {r4, r5, r7}
+    svc     #0
+    pop     {r4, r5, r7, pc}
+    .fnend
+    .size rustix_syscall6_nr_last, .-rustix_syscall6_nr_last
+
+    .section .note.GNU-stack,"",%progbits
diff --git a/vendor/rustix/src/imp/linux_raw/arch/outline/mips.s b/vendor/rustix/src/imp/linux_raw/arch/outline/mips.s
new file mode 100644
index 000000000..ab1bbfa2d
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/arch/outline/mips.s
@@ -0,0 +1,213 @@
+# Assembly code for making mips64 syscalls.
+#
+# mips64 syscall argument register ordering is the same as the mips64
+# userspace argument register ordering except that the syscall number
+# (nr) is passed in v0.
+#
+# outline.rs takes care of reordering the nr argument to the end for us,
+# so we only need to move nr into v0.
+
+    .file       "mips.s"
+    .section    .mdebug.abi32
+    .previous
+    .abicalls
+
+    .section    .text.rustix_syscall0_nr_last,"ax",@progbits
+    .p2align    2
+    .weak       rustix_syscall0_nr_last
+    .hidden     rustix_syscall0_nr_last
+    .type       rustix_syscall0_nr_last, @function
+    .set        nomips16
+    .set        nomicromips
+    .ent        rustix_syscall0_nr_last
+rustix_syscall0_nr_last:
+    .frame      $sp,0,$31
+    .mask       0x00000000,0
+    .fmask      0x00000000,0
+    .set        noreorder
+    .set        nomacro
+    move   $2, $4
+    syscall
+    negu   $8, $2
+    jr     $31
+    movn   $2, $8, $7
+    .end        rustix_syscall0_nr_last
+    .size       rustix_syscall0_nr_last, .-rustix_syscall0_nr_last
+
+    .section    .text.rustix_syscall1_nr_last,"ax",@progbits
+    .p2align    2
+    .weak       rustix_syscall1_nr_last
+    .hidden     rustix_syscall1_nr_last
+    .type       rustix_syscall1_nr_last, @function
+    .set        nomips16
+    .set        nomicromips
+    .ent        rustix_syscall1_nr_last
+rustix_syscall1_nr_last:
+    .frame      $sp,0,$31
+    .mask       0x00000000,0
+    .fmask      0x00000000,0
+    .set        noreorder
+    .set        nomacro
+    move   $2, $5
+    syscall
+    negu   $8, $2
+    jr     $31
+    movn   $2, $8, $7
+    .end        rustix_syscall1_nr_last
+    .size       rustix_syscall1_nr_last, .-rustix_syscall1_nr_last
+
+    .section    .text.rustix_syscall1_noreturn_nr_last,"ax",@progbits
+    .p2align    2
+    .weak       rustix_syscall1_noreturn_nr_last
+    .hidden     rustix_syscall1_noreturn_nr_last
+    .type       rustix_syscall1_noreturn_nr_last, @function
+    .set        nomips16
+    .set        nomicromips
+    .ent        rustix_syscall1_noreturn_nr_last
+rustix_syscall1_noreturn_nr_last:
+    .frame      $sp,0,$31
+    .mask       0x00000000,0
+    .fmask      0x00000000,0
+    .set        noreorder
+    .set        nomacro
+    move   $2, $5
+    syscall
+    teq    $zero, $zero
+    .end        rustix_syscall1_noreturn_nr_last
+    .size       rustix_syscall1_noreturn_nr_last, .-rustix_syscall1_noreturn_nr_last
+
+    .section    .text.rustix_syscall2_nr_last,"ax",@progbits
+    .p2align    2
+    .weak       rustix_syscall2_nr_last
+    .hidden     rustix_syscall2_nr_last
+    .type       rustix_syscall2_nr_last, @function
+    .set        nomips16
+    .set        nomicromips
+    .ent        rustix_syscall2_nr_last
+rustix_syscall2_nr_last:
+    .frame      $sp,0,$31
+    .mask       0x00000000,0
+    .fmask      0x00000000,0
+    .set        noreorder
+    .set        nomacro
+    move   $2, $6
+    syscall
+    negu   $8, $2
+    jr     $31
+    movn   $2, $8, $7
+    .end        rustix_syscall2_nr_last
+    .size       rustix_syscall2_nr_last, .-rustix_syscall2_nr_last
+
+    .section    .text.rustix_syscall3_nr_last,"ax",@progbits
+    .p2align    2
+    .weak       rustix_syscall3_nr_last
+    .hidden     rustix_syscall3_nr_last
+    .type       rustix_syscall3_nr_last, @function
+    .set        nomips16
+    .set        nomicromips
+    .ent        rustix_syscall3_nr_last
+rustix_syscall3_nr_last:
+    .frame      $sp,0,$31
+    .mask       0x00000000,0
+    .fmask      0x00000000,0
+    .set        noreorder
+    .set        nomacro
+    move   $2, $7
+    syscall
+    negu   $8, $2
+    jr     $31
+    movn   $2, $8, $7
+    .end        rustix_syscall3_nr_last
+    .size       rustix_syscall3_nr_last, .-rustix_syscall3_nr_last
+
+    .section    .text.rustix_syscall4_nr_last,"ax",@progbits
+    .p2align    2
+    .weak       rustix_syscall4_nr_last
+    .hidden     rustix_syscall4_nr_last
+    .type       rustix_syscall4_nr_last, @function
+    .set        nomips16
+    .set        nomicromips
+    .ent        rustix_syscall4_nr_last
+rustix_syscall4_nr_last:
+    .frame      $sp,0,$31
+    .mask       0x00000000,0
+    .fmask      0x00000000,0
+    .set        noreorder
+    .set        nomacro
+    lw     $2, 16($sp)
+    syscall
+    negu   $8, $2
+    jr     $31
+    movn   $2, $8, $7
+    .end        rustix_syscall4_nr_last
+    .size       rustix_syscall4_nr_last, .-rustix_syscall4_nr_last
+
+    .section    .text.rustix_syscall5_nr_last,"ax",@progbits
+    .p2align    2
+    .weak       rustix_syscall5_nr_last
+    .hidden     rustix_syscall5_nr_last
+    .type       rustix_syscall5_nr_last, @function
+    .set        nomips16
+    .set        nomicromips
+    .ent        rustix_syscall5_nr_last
+rustix_syscall5_nr_last:
+    .frame      $sp,0,$31
+    .mask       0x00000000,0
+    .fmask      0x00000000,0
+    .set        noreorder
+    .set        nomacro
+    lw     $2, 20($sp)
+    syscall
+    negu   $8, $2
+    jr     $31
+    movn   $2, $8, $7
+    .end        rustix_syscall5_nr_last
+    .size       rustix_syscall5_nr_last, .-rustix_syscall5_nr_last
+
+    .section    .text.rustix_syscall6_nr_last,"ax",@progbits
+    .p2align    2
+    .weak       rustix_syscall6_nr_last
+    .hidden     rustix_syscall6_nr_last
+    .type       rustix_syscall6_nr_last, @function
+    .set        nomips16
+    .set        nomicromips
+    .ent        rustix_syscall6_nr_last
+rustix_syscall6_nr_last:
+    .frame      $sp,0,$31
+    .mask       0x00000000,0
+    .fmask      0x00000000,0
+    .set        noreorder
+    .set        nomacro
+    lw     $2, 24($sp)
+    syscall
+    negu   $8, $2
+    jr     $31
+    movn   $2, $8, $7
+    .end        rustix_syscall6_nr_last
+    .size       rustix_syscall6_nr_last, .-rustix_syscall6_nr_last
+
+    .section .note.GNU-stack,"",@progbits
+
+    .section    .text.rustix_syscall7_nr_last,"ax",@progbits
+    .p2align    2
+    .weak       rustix_syscall7_nr_last
+    .hidden     rustix_syscall7_nr_last
+    .type       rustix_syscall7_nr_last, @function
+    .set        nomips16
+    .set        nomicromips
+    .ent        rustix_syscall7_nr_last
+rustix_syscall7_nr_last:
+    .frame      $sp,0,$31
+    .mask       0x00000000,0
+    .fmask      0x00000000,0
+    .set        noreorder
+    .set        nomacro
+    lw     $2, 28($sp)
+    syscall
+    negu   $8, $2
+    jr     $31
+    movn   $2, $8, $7
+    .end        rustix_syscall7_nr_last
+    .size       rustix_syscall7_nr_last, .-rustix_syscall7_nr_last
+
+    .section .note.GNU-stack,"",@progbits
diff --git a/vendor/rustix/src/imp/linux_raw/arch/outline/mips64.s b/vendor/rustix/src/imp/linux_raw/arch/outline/mips64.s
new file mode 100644
index 000000000..3c5e76e36
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/arch/outline/mips64.s
@@ -0,0 +1,189 @@
+# Assembly code for making mips64 syscalls.
+#
+# mips64 syscall argument register ordering is the same as the mips64
+# userspace argument register ordering except that the syscall number
+# (nr) is passed in v0.
+#
+# outline.rs takes care of reordering the nr argument to the end for us,
+# so we only need to move nr into v0.
+
+    .file       "mips.s"
+    .section    .mdebug.abi64
+    .previous
+    .abicalls
+
+    .section    .text.rustix_syscall0_nr_last,"ax",@progbits
+    .p2align    2
+    .weak       rustix_syscall0_nr_last
+    .hidden     rustix_syscall0_nr_last
+    .type       rustix_syscall0_nr_last, @function
+    .set        nomips16
+    .set        nomicromips
+    .ent        rustix_syscall0_nr_last
+rustix_syscall0_nr_last:
+    .frame      $sp,0,$31
+    .mask       0x00000000,0
+    .fmask      0x00000000,0
+    .set        noreorder
+    .set        nomacro
+    move   $2, $4
+    syscall
+    dnegu  $12, $2
+    jr     $31
+    movn   $2, $12, $7
+    .end        rustix_syscall0_nr_last
+    .size       rustix_syscall0_nr_last, .-rustix_syscall0_nr_last
+
+    .section    .text.rustix_syscall1_nr_last,"ax",@progbits
+    .p2align    2
+    .weak       rustix_syscall1_nr_last
+    .hidden     rustix_syscall1_nr_last
+    .type       rustix_syscall1_nr_last, @function
+    .set        nomips16
+    .set        nomicromips
+    .ent        rustix_syscall1_nr_last
+rustix_syscall1_nr_last:
+    .frame      $sp,0,$31
+    .mask       0x00000000,0
+    .fmask      0x00000000,0
+    .set        noreorder
+    .set        nomacro
+    move   $2, $5
+    syscall
+    dnegu  $12, $2
+    jr     $31
+    movn   $2, $12, $7
+    .end        rustix_syscall1_nr_last
+    .size       rustix_syscall1_nr_last, .-rustix_syscall1_nr_last
+
+    .section    .text.rustix_syscall1_noreturn_nr_last,"ax",@progbits
+    .p2align    2
+    .weak       rustix_syscall1_noreturn_nr_last
+    .hidden     rustix_syscall1_noreturn_nr_last
+    .type       rustix_syscall1_noreturn_nr_last, @function
+    .set        nomips16
+    .set        nomicromips
+    .ent        rustix_syscall1_noreturn_nr_last
+rustix_syscall1_noreturn_nr_last:
+    .frame      $sp,0,$31
+    .mask       0x00000000,0
+    .fmask      0x00000000,0
+    .set        noreorder
+    .set        nomacro
+    move   $2, $5
+    syscall
+    teq    $0, $0
+    .end        rustix_syscall1_noreturn_nr_last
+    .size       rustix_syscall1_noreturn_nr_last, .-rustix_syscall1_noreturn_nr_last
+
+    .section    .text.rustix_syscall2_nr_last,"ax",@progbits
+    .p2align    2
+    .weak       rustix_syscall2_nr_last
+    .hidden     rustix_syscall2_nr_last
+    .type       rustix_syscall2_nr_last, @function
+    .set        nomips16
+    .set        nomicromips
+    .ent        rustix_syscall2_nr_last
+rustix_syscall2_nr_last:
+    .frame      $sp,0,$31
+    .mask       0x00000000,0
+    .fmask      0x00000000,0
+    .set        noreorder
+    .set        nomacro
+    move   $2, $6
+    syscall
+    dnegu  $12, $2
+    jr     $31
+    movn   $2, $12, $7
+    .end        rustix_syscall2_nr_last
+    .size       rustix_syscall2_nr_last, .-rustix_syscall2_nr_last
+
+    .section    .text.rustix_syscall3_nr_last,"ax",@progbits
+    .p2align    2
+    .weak       rustix_syscall3_nr_last
+    .hidden     rustix_syscall3_nr_last
+    .type       rustix_syscall3_nr_last, @function
+    .set        nomips16
+    .set        nomicromips
+    .ent        rustix_syscall3_nr_last
+rustix_syscall3_nr_last:
+    .frame      $sp,0,$31
+    .mask       0x00000000,0
+    .fmask      0x00000000,0
+    .set        noreorder
+    .set        nomacro
+    move   $2, $7
+    syscall
+    dnegu  $12, $2
+    jr     $31
+    movn   $2, $12, $7
+    .end        rustix_syscall3_nr_last
+    .size       rustix_syscall3_nr_last, .-rustix_syscall3_nr_last
+
+    .section    .text.rustix_syscall4_nr_last,"ax",@progbits
+    .p2align    2
+    .weak       rustix_syscall4_nr_last
+    .hidden     rustix_syscall4_nr_last
+    .type       rustix_syscall4_nr_last, @function
+    .set        nomips16
+    .set        nomicromips
+    .ent        rustix_syscall4_nr_last
+rustix_syscall4_nr_last:
+    .frame      $sp,0,$31
+    .mask       0x00000000,0
+    .fmask      0x00000000,0
+    .set        noreorder
+    .set        nomacro
+    move   $2, $8
+    syscall
+    dnegu  $12, $2
+    jr     $31
+    movn   $2, $12, $7
+    .end        rustix_syscall4_nr_last
+    .size       rustix_syscall4_nr_last, .-rustix_syscall4_nr_last
+
+    .section    .text.rustix_syscall5_nr_last,"ax",@progbits
+    .p2align    2
+    .weak       rustix_syscall5_nr_last
+    .hidden     rustix_syscall5_nr_last
+    .type       rustix_syscall5_nr_last, @function
+    .set        nomips16
+    .set        nomicromips
+    .ent        rustix_syscall5_nr_last
+rustix_syscall5_nr_last:
+    .frame      $sp,0,$31
+    .mask       0x00000000,0
+    .fmask      0x00000000,0
+    .set        noreorder
+    .set        nomacro
+    move   $2, $9
+    syscall
+    dnegu  $12, $2
+    jr     $31
+    movn   $2, $12, $7
+    .end        rustix_syscall5_nr_last
+    .size       rustix_syscall5_nr_last, .-rustix_syscall5_nr_last
+
+    .section    .text.rustix_syscall6_nr_last,"ax",@progbits
+    .p2align    2
+    .weak       rustix_syscall6_nr_last
+    .hidden     rustix_syscall6_nr_last
+    .type       rustix_syscall6_nr_last, @function
+    .set        nomips16
+    .set        nomicromips
+    .ent        rustix_syscall6_nr_last
+rustix_syscall6_nr_last:
+    .frame      $sp,0,$31
+    .mask       0x00000000,0
+    .fmask      0x00000000,0
+    .set        noreorder
+    .set        nomacro
+    move   $2, $10
+    syscall
+    dnegu  $12, $2
+    jr     $31
+    movn   $2, $12, $7
+    .end        rustix_syscall6_nr_last
+    .size       rustix_syscall6_nr_last, .-rustix_syscall6_nr_last
+
+    .section .note.GNU-stack,"",@progbits
diff --git a/vendor/rustix/src/imp/linux_raw/arch/outline/mod.rs b/vendor/rustix/src/imp/linux_raw/arch/outline/mod.rs
new file mode 100644
index 000000000..ce1352751
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/arch/outline/mod.rs
@@ -0,0 +1,33 @@
+//! Declare functions defined in out-of-line ("outline") asm files.
+//!
+//! Kernel calling conventions differ from userspace calling conventions,
+//! so we also define inline function wrappers which reorder the arguments
+//! so that they match with the kernel convention as closely as possible,
+//! to minimize the amount of out-of-line code we need.
+
+#[cfg(target_arch = "x86")]
+mod x86;
+// For these architectures, pass the `nr` argument last.
+#[cfg(any(
+    target_arch = "arm",
+    target_arch = "aarch64",
+    target_arch = "mips",
+    target_arch = "mips64",
+    target_arch = "powerpc64",
+    target_arch = "riscv64",
+    target_arch = "x86_64",
+))]
+mod nr_last;
+
+#[cfg(any(
+    target_arch = "arm",
+    target_arch = "aarch64",
+    target_arch = "mips",
+    target_arch = "mips64",
+    target_arch = "powerpc64",
+    target_arch = "riscv64",
+    target_arch = "x86_64",
+))]
+pub(in crate::imp) use nr_last::*;
+#[cfg(target_arch = "x86")]
+pub(in crate::imp) use x86::*;
diff --git a/vendor/rustix/src/imp/linux_raw/arch/outline/nr_last.rs b/vendor/rustix/src/imp/linux_raw/arch/outline/nr_last.rs
new file mode 100644
index 000000000..fdcd11021
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/arch/outline/nr_last.rs
@@ -0,0 +1,166 @@
+//! Syscall wrappers for platforms which pass the syscall number specially.
+//!
+//! Rustix aims to minimize the amount of assembly code it needs. To that end,
+//! this code reorders syscall arguments as close as feasible to the actual
+//! syscall convention before calling the assembly functions.
+//!
+//! Many architectures use a convention where the syscall number is passed in a
+//! special register, with the regular syscall arguments passed in either the
+//! same or similar registers as the platform C convention. This code
+//! approximates that order by passing the regular syscall arguments first, and
+//! the syscall number last. That way, the outline assembly code typically just
+//! needs to move the syscall number to its special register, and leave the
+//! other arguments mostly as they are.
+
+#[cfg(target_arch = "mips")]
+use crate::imp::reg::A6;
+use crate::imp::reg::{ArgReg, RetReg, SyscallNumber, A0, A1, A2, A3, A4, A5, R0};
+
+// First we declare the actual assembly routines with `*_nr_last` names and
+// reordered arguments. If the signatures or calling conventions are ever
+// changed, the symbol names should also be updated accordingly, to avoid
+// collisions with other versions of this crate.
+//
+// We don't define `_readonly` versions of these because we have no way to tell
+// Rust that calls to our outline assembly are readonly.
+extern "C" {
+    fn rustix_syscall0_nr_last(nr: SyscallNumber<'_>) -> RetReg<R0>;
+    fn rustix_syscall1_nr_last(a0: ArgReg<'_, A0>, nr: SyscallNumber<'_>) -> RetReg<R0>;
+    fn rustix_syscall1_noreturn_nr_last(a0: ArgReg<'_, A0>, nr: SyscallNumber<'_>) -> !;
+    fn rustix_syscall2_nr_last(
+        a0: ArgReg<'_, A0>,
+        a1: ArgReg<'_, A1>,
+        nr: SyscallNumber<'_>,
+    ) -> RetReg<R0>;
+    fn rustix_syscall3_nr_last(
+        a0: ArgReg<'_, A0>,
+        a1: ArgReg<'_, A1>,
+        a2: ArgReg<'_, A2>,
+        nr: SyscallNumber<'_>,
+    ) -> RetReg<R0>;
+    fn rustix_syscall4_nr_last(
+        a0: ArgReg<'_, A0>,
+        a1: ArgReg<'_, A1>,
+        a2: ArgReg<'_, A2>,
+        a3: ArgReg<'_, A3>,
+        nr: SyscallNumber<'_>,
+    ) -> RetReg<R0>;
+    fn rustix_syscall5_nr_last(
+        a0: ArgReg<'_, A0>,
+        a1: ArgReg<'_, A1>,
+        a2: ArgReg<'_, A2>,
+        a3: ArgReg<'_, A3>,
+        a4: ArgReg<'_, A4>,
+        nr: SyscallNumber<'_>,
+    ) -> RetReg<R0>;
+    fn rustix_syscall6_nr_last(
+        a0: ArgReg<'_, A0>,
+        a1: ArgReg<'_, A1>,
+        a2: ArgReg<'_, A2>,
+        a3: ArgReg<'_, A3>,
+        a4: ArgReg<'_, A4>,
+        a5: ArgReg<'_, A5>,
+        nr: SyscallNumber<'_>,
+    ) -> RetReg<R0>;
+    #[cfg(target_arch = "mips")]
+    fn rustix_syscall7_nr_last(
+        a0: ArgReg<'_, A0>,
+        a1: ArgReg<'_, A1>,
+        a2: ArgReg<'_, A2>,
+        a3: ArgReg<'_, A3>,
+        a4: ArgReg<'_, A4>,
+        a5: ArgReg<'_, A5>,
+        a6: ArgReg<'_, A6>,
+        nr: SyscallNumber<'_>,
+    ) -> RetReg<R0>;
+}
+
+// Then we define inline wrapper functions that do the reordering.
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall0(nr: SyscallNumber<'_>) -> RetReg<R0> {
+    rustix_syscall0_nr_last(nr)
+}
+#[inline]
+pub(in crate::imp) unsafe fn syscall1(nr: SyscallNumber<'_>, a0: ArgReg<'_, A0>) -> RetReg<R0> {
+    rustix_syscall1_nr_last(a0, nr)
+}
+#[inline]
+pub(in crate::imp) unsafe fn syscall1_noreturn(nr: SyscallNumber<'_>, a0: ArgReg<'_, A0>) -> ! {
+    rustix_syscall1_noreturn_nr_last(a0, nr)
+}
+#[inline]
+pub(in crate::imp) unsafe fn syscall2(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+) -> RetReg<R0> {
+    rustix_syscall2_nr_last(a0, a1, nr)
+}
+#[inline]
+pub(in crate::imp) unsafe fn syscall3(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+) -> RetReg<R0> {
+    rustix_syscall3_nr_last(a0, a1, a2, nr)
+}
+#[inline]
+pub(in crate::imp) unsafe fn syscall4(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+) -> RetReg<R0> {
+    rustix_syscall4_nr_last(a0, a1, a2, a3, nr)
+}
+#[inline]
+pub(in crate::imp) unsafe fn syscall5(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+    a4: ArgReg<'_, A4>,
+) -> RetReg<R0> {
+    rustix_syscall5_nr_last(a0, a1, a2, a3, a4, nr)
+}
+#[inline]
+pub(in crate::imp) unsafe fn syscall6(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+    a4: ArgReg<'_, A4>,
+    a5: ArgReg<'_, A5>,
+) -> RetReg<R0> {
+    rustix_syscall6_nr_last(a0, a1, a2, a3, a4, a5, nr)
+}
+#[cfg(target_arch = "mips")]
+#[inline]
+pub(in crate::imp) unsafe fn syscall7(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+    a4: ArgReg<'_, A4>,
+    a5: ArgReg<'_, A5>,
+    a6: ArgReg<'_, A6>,
+) -> RetReg<R0> {
+    rustix_syscall7_nr_last(a0, a1, a2, a3, a4, a5, a6, nr)
+}
+
+// Then we define the `_readonly` versions of the wrappers. We don't have
+// separate `_readonly` implementations, so these can just be aliases to
+// their non-`_readonly` counterparts.
+#[cfg(target_arch = "mips")]
+pub(in crate::imp) use syscall7 as syscall7_readonly;
+pub(in crate::imp) use {
+    syscall0 as syscall0_readonly, syscall1 as syscall1_readonly, syscall2 as syscall2_readonly,
+    syscall3 as syscall3_readonly, syscall4 as syscall4_readonly, syscall5 as syscall5_readonly,
+    syscall6 as syscall6_readonly,
+};
diff --git a/vendor/rustix/src/imp/linux_raw/arch/outline/powerpc64.s b/vendor/rustix/src/imp/linux_raw/arch/outline/powerpc64.s
new file mode 100644
index 000000000..29d4c0a95
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/arch/outline/powerpc64.s
@@ -0,0 +1,132 @@
+# Assembly code for making powerpc64le syscalls.
+#
+# powerpc64le syscall argument register ordering is the same as the
+# powerpc64le userspace argument register ordering except that the syscall
+# number (nr) is passed in r0.
+#
+# outline.rs takes care of reordering the nr argument to the end for us,
+# so we only need to move nr into r0.
+
+    .file       "powerpc64le.s"
+    .machine    power8
+    .abiversion 2
+
+    .section    .text.rustix_syscall0_nr_last,"ax",@progbits
+    .p2align    2
+    .weak       rustix_syscall0_nr_last
+    .hidden     rustix_syscall0_nr_last
+    .type       rustix_syscall0_nr_last, @function
+rustix_syscall0_nr_last:
+    .cfi_startproc
+    mr     0, 3
+    sc
+    bnslr
+    neg 3, 3
+    blr
+    .cfi_endproc
+    .size rustix_syscall0_nr_last, .-rustix_syscall0_nr_last
+
+    .section    .text.rustix_syscall1_nr_last,"ax",@progbits
+    .p2align    2
+    .weak       rustix_syscall1_nr_last
+    .hidden     rustix_syscall1_nr_last
+    .type       rustix_syscall1_nr_last, @function
+rustix_syscall1_nr_last:
+    .cfi_startproc
+    mr     0, 4
+    sc
+    bnslr
+    neg 3, 3
+    blr
+    .cfi_endproc
+    .size rustix_syscall1_nr_last, .-rustix_syscall1_nr_last
+
+    .section    .text.rustix_syscall1_noreturn_nr_last,"ax",@progbits
+    .p2align    2
+    .weak       rustix_syscall1_noreturn_nr_last
+    .hidden     rustix_syscall1_noreturn_nr_last
+    .type       rustix_syscall1_noreturn_nr_last, @function
+rustix_syscall1_noreturn_nr_last:
+    .cfi_startproc
+    mr     0, 4
+    sc
+    trap
+    .cfi_endproc
+    .size rustix_syscall1_noreturn_nr_last, .-rustix_syscall1_noreturn_nr_last
+
+    .section    .text.rustix_syscall2_nr_last,"ax",@progbits
+    .p2align    2
+    .weak       rustix_syscall2_nr_last
+    .hidden     rustix_syscall2_nr_last
+    .type       rustix_syscall2_nr_last, @function
+rustix_syscall2_nr_last:
+    .cfi_startproc
+    mr     0, 5
+    sc
+    bnslr
+    neg 3, 3
+    blr
+    .cfi_endproc
+    .size rustix_syscall2_nr_last, .-rustix_syscall2_nr_last
+
+    .section    .text.rustix_syscall3_nr_last,"ax",@progbits
+    .p2align    2
+    .weak       rustix_syscall3_nr_last
+    .hidden     rustix_syscall3_nr_last
+    .type       rustix_syscall3_nr_last, @function
+rustix_syscall3_nr_last:
+    .cfi_startproc
+    mr     0, 6
+    sc
+    bnslr
+    neg 3, 3
+    blr
+    .cfi_endproc
+    .size rustix_syscall3_nr_last, .-rustix_syscall3_nr_last
+
+    .section    .text.rustix_syscall4_nr_last,"ax",@progbits
+    .p2align    2
+    .weak       rustix_syscall4_nr_last
+    .hidden     rustix_syscall4_nr_last
+    .type       rustix_syscall4_nr_last, @function
+rustix_syscall4_nr_last:
+    .cfi_startproc
+    mr     0, 7
+    sc
+    bnslr
+    neg 3, 3
+    blr
+    .cfi_endproc
+    .size rustix_syscall4_nr_last, .-rustix_syscall4_nr_last
+
+    .section    .text.rustix_syscall5_nr_last,"ax",@progbits
+    .p2align    2
+    .weak       rustix_syscall5_nr_last
+    .hidden     rustix_syscall5_nr_last
+    .type       rustix_syscall5_nr_last, @function
+rustix_syscall5_nr_last:
+    .cfi_startproc
+    mr     0, 8
+    sc
+    bnslr
+    neg 3, 3
+    blr
+    .cfi_endproc
+    .size rustix_syscall5_nr_last, .-rustix_syscall5_nr_last
+
+    .section    .text.rustix_syscall6_nr_last,"ax",@progbits
+    .p2align    2
+    .weak       rustix_syscall6_nr_last
+    .hidden     rustix_syscall6_nr_last
+    .type       rustix_syscall6_nr_last, @function
+rustix_syscall6_nr_last:
+    .cfi_startproc
+    mr     0, 9
+    sc
+    bnslr
+    neg 3, 3
+    blr
+    .cfi_endproc
+    .size rustix_syscall6_nr_last, .-rustix_syscall6_nr_last
+
+    .section .note.GNU-stack,"",@progbits
diff --git a/vendor/rustix/src/imp/linux_raw/arch/outline/riscv64.s b/vendor/rustix/src/imp/linux_raw/arch/outline/riscv64.s
new file mode 100644
index 000000000..28d692f7c
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/arch/outline/riscv64.s
@@ -0,0 +1,116 @@
+# Assembly code for making riscv64 syscalls.
+#
+# riscv64 syscall argument register ordering is the same as the riscv64
+# userspace argument register ordering except that the syscall number
+# (nr) is passed in a7.
+#
+# nr_last.rs takes care of reordering the nr argument to the end for us,
+# so we only need to move nr into a7.
+
+    .file       "riscv64.s"
+
+    .section    .text.rustix_syscall0_nr_last,"ax",@progbits
+    .p2align    4
+    .weak       rustix_syscall0_nr_last
+    .hidden     rustix_syscall0_nr_last
+    .type       rustix_syscall0_nr_last, @function
+rustix_syscall0_nr_last:
+    .cfi_startproc
+    mv      a7, a0
+    ecall
+    ret
+    .cfi_endproc
+    .size rustix_syscall0_nr_last, .-rustix_syscall0_nr_last
+
+    .section    .text.rustix_syscall1_nr_last,"ax",@progbits
+    .p2align    4
+    .weak       rustix_syscall1_nr_last
+    .hidden     rustix_syscall1_nr_last
+    .type       rustix_syscall1_nr_last, @function
+rustix_syscall1_nr_last:
+    .cfi_startproc
+    mv      a7, a1
+    ecall
+    ret
+    .cfi_endproc
+    .size rustix_syscall1_nr_last, .-rustix_syscall1_nr_last
+
+    .section    .text.rustix_syscall1_noreturn_nr_last,"ax",@progbits
+    .p2align    4
+    .weak       rustix_syscall1_noreturn_nr_last
+    .hidden     rustix_syscall1_noreturn_nr_last
+    .type       rustix_syscall1_noreturn_nr_last, @function
+rustix_syscall1_noreturn_nr_last:
+    .cfi_startproc
+    mv      a7, a1
+    ecall
+    unimp
+    .cfi_endproc
+    .size rustix_syscall1_noreturn_nr_last, .-rustix_syscall1_noreturn_nr_last
+
+    .section    .text.rustix_syscall2_nr_last,"ax",@progbits
+    .p2align    4
+    .weak       rustix_syscall2_nr_last
+    .hidden     rustix_syscall2_nr_last
+    .type       rustix_syscall2_nr_last, @function
+rustix_syscall2_nr_last:
+    .cfi_startproc
+    mv      a7, a2
+    ecall
+    ret
+    .cfi_endproc
+    .size rustix_syscall2_nr_last, .-rustix_syscall2_nr_last
+
+    .section    .text.rustix_syscall3_nr_last,"ax",@progbits
+    .p2align    4
+    .weak       rustix_syscall3_nr_last
+    .hidden     rustix_syscall3_nr_last
+    .type       rustix_syscall3_nr_last, @function
+rustix_syscall3_nr_last:
+    .cfi_startproc
+    mv      a7, a3
+    ecall
+    ret
+    .cfi_endproc
+    .size rustix_syscall3_nr_last, .-rustix_syscall3_nr_last
+
+    .section    .text.rustix_syscall4_nr_last,"ax",@progbits
+    .p2align    4
+    .weak       rustix_syscall4_nr_last
+    .hidden     rustix_syscall4_nr_last
+    .type       rustix_syscall4_nr_last, @function
+rustix_syscall4_nr_last:
+    .cfi_startproc
+    mv      a7, a4
+    ecall
+    ret
+    .cfi_endproc
+    .size rustix_syscall4_nr_last, .-rustix_syscall4_nr_last
+
+    .section    .text.rustix_syscall5_nr_last,"ax",@progbits
+    .p2align    4
+    .weak       rustix_syscall5_nr_last
+    .hidden     rustix_syscall5_nr_last
+    .type       rustix_syscall5_nr_last, @function
+rustix_syscall5_nr_last:
+    .cfi_startproc
+    mv      a7, a5
+    ecall
+    ret
+    .cfi_endproc
+    .size rustix_syscall5_nr_last, .-rustix_syscall5_nr_last
+
+    .section    .text.rustix_syscall6_nr_last,"ax",@progbits
+    .p2align    4
+    .weak       rustix_syscall6_nr_last
+    .hidden     rustix_syscall6_nr_last
+    .type       rustix_syscall6_nr_last, @function
+rustix_syscall6_nr_last:
+    .cfi_startproc
+    mv      a7, a6
+    ecall
+    ret
+    .cfi_endproc
+    .size rustix_syscall6_nr_last, .-rustix_syscall6_nr_last
+
+    .section .note.GNU-stack,"",@progbits
diff --git a/vendor/rustix/src/imp/linux_raw/arch/outline/x86.rs b/vendor/rustix/src/imp/linux_raw/arch/outline/x86.rs
new file mode 100644
index 000000000..938a4a09d
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/arch/outline/x86.rs
@@ -0,0 +1,285 @@
+//! Syscall wrappers for 32-bit x86.
+//!
+//! This module is similar to the `nr_last` module, except specialized for
+//! 32-bit x86.
+//!
+//! The syscall convention passes all arguments in registers. The closest we
+//! can easily get to that from Rust is to use the fastcall convention which
+//! passes the first two arguments in `ecx` and `edx`, which are the second
+//! and third Linux syscall arguments. To line them up, this function passes
+//! the second and third syscall argument as the first and second argument to
+//! the outline assembly, followed by the first syscall argument, and then the
+//! rest of the syscall arguments. The assembly code still has to do some work,
+//! but at least we can get up to two arguments into the right place for it.
+
+#![allow(dead_code, unused_imports)]
+
+use crate::imp::reg::{ArgReg, RetReg, SyscallNumber, A0, A1, A2, A3, A4, A5, R0};
+use crate::imp::vdso_wrappers::SyscallType;
+
+// First we declare the actual assembly routines with `*_nr_last_fastcall`
+// names and reordered arguments. If the signatures or calling conventions are
+// ever changed, the symbol names should also be updated accordingly, to avoid
+// collisions with other versions of this crate.
+//
+// We don't define `_readonly` versions of these because we have no way to tell
+// Rust that calls to our outline assembly are readonly.
+extern "fastcall" {
+    fn rustix_syscall0_nr_last_fastcall(nr: SyscallNumber<'_>) -> RetReg<R0>;
+    fn rustix_syscall1_nr_last_fastcall(a0: ArgReg<'_, A0>, nr: SyscallNumber<'_>) -> RetReg<R0>;
+    fn rustix_syscall1_noreturn_nr_last_fastcall(a0: ArgReg<'_, A0>, nr: SyscallNumber<'_>) -> !;
+    fn rustix_syscall2_nr_last_fastcall(
+        a1: ArgReg<'_, A1>,
+        a0: ArgReg<'_, A0>,
+        nr: SyscallNumber<'_>,
+    ) -> RetReg<R0>;
+    fn rustix_syscall3_nr_last_fastcall(
+        a1: ArgReg<'_, A1>,
+        a2: ArgReg<'_, A2>,
+        a0: ArgReg<'_, A0>,
+        nr: SyscallNumber<'_>,
+    ) -> RetReg<R0>;
+    fn rustix_syscall4_nr_last_fastcall(
+        a1: ArgReg<'_, A1>,
+        a2: ArgReg<'_, A2>,
+        a0: ArgReg<'_, A0>,
+        a3: ArgReg<'_, A3>,
+        nr: SyscallNumber<'_>,
+    ) -> RetReg<R0>;
+    fn rustix_syscall5_nr_last_fastcall(
+        a1: ArgReg<'_, A1>,
+        a2: ArgReg<'_, A2>,
+        a0: ArgReg<'_, A0>,
+        a3: ArgReg<'_, A3>,
+        a4: ArgReg<'_, A4>,
+        nr: SyscallNumber<'_>,
+    ) -> RetReg<R0>;
+    fn rustix_syscall6_nr_last_fastcall(
+        a1: ArgReg<'_, A1>,
+        a2: ArgReg<'_, A2>,
+        a0: ArgReg<'_, A0>,
+        a3: ArgReg<'_, A3>,
+        a4: ArgReg<'_, A4>,
+        a5: ArgReg<'_, A5>,
+        nr: SyscallNumber<'_>,
+    ) -> RetReg<R0>;
+}
+
+// Then we define inline wrapper functions that do the reordering.
+
+#[inline]
+pub(in crate::imp) unsafe fn syscall0(nr: SyscallNumber<'_>) -> RetReg<R0> {
+    rustix_syscall0_nr_last_fastcall(nr)
+}
+#[inline]
+pub(in crate::imp) unsafe fn syscall1(nr: SyscallNumber<'_>, a0: ArgReg<'_, A0>) -> RetReg<R0> {
+    rustix_syscall1_nr_last_fastcall(a0, nr)
+}
+#[inline]
+pub(in crate::imp) unsafe fn syscall1_noreturn(nr: SyscallNumber<'_>, a0: ArgReg<'_, A0>) -> ! {
+    rustix_syscall1_noreturn_nr_last_fastcall(a0, nr)
+}
+#[inline]
+pub(in crate::imp) unsafe fn syscall2(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+) -> RetReg<R0> {
+    rustix_syscall2_nr_last_fastcall(a1, a0, nr)
+}
+#[inline]
+pub(in crate::imp) unsafe fn syscall3(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+) -> RetReg<R0> {
+    rustix_syscall3_nr_last_fastcall(a1, a2, a0, nr)
+}
+#[inline]
+pub(in crate::imp) unsafe fn syscall4(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+) -> RetReg<R0> {
+    rustix_syscall4_nr_last_fastcall(a1, a2, a0, a3, nr)
+}
+#[inline]
+pub(in crate::imp) unsafe fn syscall5(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+    a4: ArgReg<'_, A4>,
+) -> RetReg<R0> {
+    rustix_syscall5_nr_last_fastcall(a1, a2, a0, a3, a4, nr)
+}
+#[inline]
+pub(in crate::imp) unsafe fn syscall6(
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+    a4: ArgReg<'_, A4>,
+    a5: ArgReg<'_, A5>,
+) -> RetReg<R0> {
+    rustix_syscall6_nr_last_fastcall(a1, a2, a0, a3, a4, a5, nr)
+}
+
+// Then we define the `_readonly` versions of the wrappers. We don't have
+// separate `_readonly` implementations, so these can just be aliases to
+// their non-`_readonly` counterparts.
+pub(in crate::imp) use {
+    syscall0 as syscall0_readonly, syscall1 as syscall1_readonly, syscall2 as syscall2_readonly,
+    syscall3 as syscall3_readonly, syscall4 as syscall4_readonly, syscall5 as syscall5_readonly,
+    syscall6 as syscall6_readonly,
+};
+
+// x86 prefers to route all syscalls through the vDSO, though this isn't
+// always possible, so it also has a special form for doing the dispatch.
+//
+// First we declare the actual assembly routines with `*_nr_last_fastcall`
+// names and reordered arguments. If the signatures or calling conventions are
+// ever changed, the symbol names should also be updated accordingly, to avoid
+// collisions with other versions of this crate.
+extern "fastcall" {
+    fn rustix_indirect_syscall0_nr_last_fastcall(
+        nr: SyscallNumber<'_>,
+        callee: SyscallType,
+    ) -> RetReg<R0>;
+    fn rustix_indirect_syscall1_nr_last_fastcall(
+        a0: ArgReg<'_, A0>,
+        nr: SyscallNumber<'_>,
+        callee: SyscallType,
+    ) -> RetReg<R0>;
+    fn rustix_indirect_syscall1_noreturn_nr_last_fastcall(
+        a0: ArgReg<'_, A0>,
+        nr: SyscallNumber<'_>,
+        callee: SyscallType,
+    ) -> !;
+    fn rustix_indirect_syscall2_nr_last_fastcall(
+        a1: ArgReg<'_, A1>,
+        a0: ArgReg<'_, A0>,
+        nr: SyscallNumber<'_>,
+        callee: SyscallType,
+    ) -> RetReg<R0>;
+    fn rustix_indirect_syscall3_nr_last_fastcall(
+        a1: ArgReg<'_, A1>,
+        a2: ArgReg<'_, A2>,
+        a0: ArgReg<'_, A0>,
+        nr: SyscallNumber<'_>,
+        callee: SyscallType,
+    ) -> RetReg<R0>;
+    fn rustix_indirect_syscall4_nr_last_fastcall(
+        a1: ArgReg<'_, A1>,
+        a2: ArgReg<'_, A2>,
+        a0: ArgReg<'_, A0>,
+        a3: ArgReg<'_, A3>,
+        nr: SyscallNumber<'_>,
+        callee: SyscallType,
+    ) -> RetReg<R0>;
+    fn rustix_indirect_syscall5_nr_last_fastcall(
+        a1: ArgReg<'_, A1>,
+        a2: ArgReg<'_, A2>,
+        a0: ArgReg<'_, A0>,
+        a3: ArgReg<'_, A3>,
+        a4: ArgReg<'_, A4>,
+        nr: SyscallNumber<'_>,
+        callee: SyscallType,
+    ) -> RetReg<R0>;
+    fn rustix_indirect_syscall6_nr_last_fastcall(
+        a1: ArgReg<'_, A1>,
+        a2: ArgReg<'_, A2>,
+        a0: ArgReg<'_, A0>,
+        a3: ArgReg<'_, A3>,
+        a4: ArgReg<'_, A4>,
+        a5: ArgReg<'_, A5>,
+        nr: SyscallNumber<'_>,
+        callee: SyscallType,
+    ) -> RetReg<R0>;
+}
+
+// Then we define inline wrapper functions that do the reordering.
+
+#[inline]
+pub(in crate::imp) unsafe fn indirect_syscall0(
+    callee: SyscallType,
+    nr: SyscallNumber<'_>,
+) -> RetReg<R0> {
+    rustix_indirect_syscall0_nr_last_fastcall(nr, callee)
+}
+#[inline]
+pub(in crate::imp) unsafe fn indirect_syscall1(
+    callee: SyscallType,
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+) -> RetReg<R0> {
+    rustix_indirect_syscall1_nr_last_fastcall(a0, nr, callee)
+}
+#[inline]
+pub(in crate::imp) unsafe fn indirect_syscall1_noreturn(
+    callee: SyscallType,
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+) -> ! {
+    rustix_indirect_syscall1_noreturn_nr_last_fastcall(a0, nr, callee)
+}
+#[inline]
+pub(in crate::imp) unsafe fn indirect_syscall2(
+    callee: SyscallType,
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+) -> RetReg<R0> {
+    rustix_indirect_syscall2_nr_last_fastcall(a1, a0, nr, callee)
+}
+#[inline]
+pub(in crate::imp) unsafe fn indirect_syscall3(
+    callee: SyscallType,
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+) -> RetReg<R0> {
+    rustix_indirect_syscall3_nr_last_fastcall(a1, a2, a0, nr, callee)
+}
+#[inline]
+pub(in crate::imp) unsafe fn indirect_syscall4(
+    callee: SyscallType,
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+) -> RetReg<R0> {
+    rustix_indirect_syscall4_nr_last_fastcall(a1, a2, a0, a3, nr, callee)
+}
+#[inline]
+pub(in crate::imp) unsafe fn indirect_syscall5(
+    callee: SyscallType,
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+    a4: ArgReg<'_, A4>,
+) -> RetReg<R0> {
+    rustix_indirect_syscall5_nr_last_fastcall(a1, a2, a0, a3, a4, nr, callee)
+}
+#[inline]
+pub(in crate::imp) unsafe fn indirect_syscall6(
+    callee: SyscallType,
+    nr: SyscallNumber<'_>,
+    a0: ArgReg<'_, A0>,
+    a1: ArgReg<'_, A1>,
+    a2: ArgReg<'_, A2>,
+    a3: ArgReg<'_, A3>,
+    a4: ArgReg<'_, A4>,
+    a5: ArgReg<'_, A5>,
+) -> RetReg<R0> {
+    rustix_indirect_syscall6_nr_last_fastcall(a1, a2, a0, a3, a4, a5, nr, callee)
+}
diff --git a/vendor/rustix/src/imp/linux_raw/arch/outline/x86.s b/vendor/rustix/src/imp/linux_raw/arch/outline/x86.s
new file mode 100644
index 000000000..bda234e1a
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/arch/outline/x86.s
@@ -0,0 +1,381 @@
+// Assembly code for making x86 syscalls.
+//
+// On x86 we use the "fastcall" convention which passes the first two
+// arguments in ecx and edx. Outline.rs reorders the arguments to put
+// a1 and a2 in those registers so they we don't have to move them to
+// set up the kernel convention.
+//
+// "fastcall" expects callee to pop argument stack space, so we use
+// `ret imm` instructions to clean up the stack. We don't need callee
+// cleanup per se, it just comes along with using "fastcall".
+
+    .file       "x86.s"
+    .intel_syntax noprefix
+
+    .section    .text.rustix_indirect_syscall0_nr_last_fastcall,"ax",@progbits
+    .p2align    4
+    .weak       rustix_indirect_syscall0_nr_last_fastcall
+    .hidden     rustix_indirect_syscall0_nr_last_fastcall
+    .type       rustix_indirect_syscall0_nr_last_fastcall, @function
+rustix_indirect_syscall0_nr_last_fastcall:
+    .cfi_startproc
+    mov    eax,ecx
+    call   edx
+    ret
+    .cfi_endproc
+    .size rustix_indirect_syscall0_nr_last_fastcall, .-rustix_indirect_syscall0_nr_last_fastcall
+
+    .section    .text.rustix_indirect_syscall1_nr_last_fastcall,"ax",@progbits
+    .p2align    4
+    .weak       rustix_indirect_syscall1_nr_last_fastcall
+    .hidden     rustix_indirect_syscall1_nr_last_fastcall
+    .type       rustix_indirect_syscall1_nr_last_fastcall, @function
+rustix_indirect_syscall1_nr_last_fastcall:
+    .cfi_startproc
+    push   ebx
+    .cfi_def_cfa_offset 8
+    .cfi_offset ebx, -8
+    mov    ebx,ecx
+    mov    eax,edx
+    call   DWORD PTR [esp+0x8]
+    pop    ebx
+    .cfi_def_cfa_offset 4
+    ret    0x4
+    .cfi_endproc
+    .size rustix_indirect_syscall1_nr_last_fastcall, .-rustix_indirect_syscall1_nr_last_fastcall
+
+    .section    .text.rustix_indirect_syscall1_noreturn_nr_last_fastcall,"ax",@progbits
+    .p2align    4
+    .weak       rustix_indirect_syscall1_noreturn_nr_last_fastcall
+    .hidden     rustix_indirect_syscall1_noreturn_nr_last_fastcall
+    .type       rustix_indirect_syscall1_noreturn_nr_last_fastcall, @function
+rustix_indirect_syscall1_noreturn_nr_last_fastcall:
+    .cfi_startproc
+    mov    ebx,ecx
+    mov    eax,edx
+    call   DWORD PTR [esp+0x4]
+    ud2
+    .cfi_endproc
+    .size rustix_indirect_syscall1_noreturn_nr_last_fastcall, .-rustix_indirect_syscall1_noreturn_nr_last_fastcall
+
+    .section    .text.rustix_indirect_syscall2_nr_last_fastcall,"ax",@progbits
+    .p2align    4
+    .weak       rustix_indirect_syscall2_nr_last_fastcall
+    .hidden     rustix_indirect_syscall2_nr_last_fastcall
+    .type       rustix_indirect_syscall2_nr_last_fastcall, @function
+rustix_indirect_syscall2_nr_last_fastcall:
+    .cfi_startproc
+    push   ebx
+    .cfi_def_cfa_offset 8
+    .cfi_offset ebx, -8
+    mov    ebx,edx
+    mov    eax,DWORD PTR [esp+0x8]
+    call   DWORD PTR [esp+0xc]
+    pop    ebx
+    .cfi_def_cfa_offset 4
+    ret    0x8
+    .cfi_endproc
+    .size rustix_indirect_syscall2_nr_last_fastcall, .-rustix_indirect_syscall2_nr_last_fastcall
+
+    .section    .text.rustix_indirect_syscall3_nr_last_fastcall,"ax",@progbits
+    .p2align    4
+    .weak       rustix_indirect_syscall3_nr_last_fastcall
+    .hidden     rustix_indirect_syscall3_nr_last_fastcall
+    .type       rustix_indirect_syscall3_nr_last_fastcall, @function
+rustix_indirect_syscall3_nr_last_fastcall:
+    .cfi_startproc
+    push   ebx
+    .cfi_def_cfa_offset 8
+    .cfi_offset ebx, -8
+    mov    ebx,DWORD PTR [esp+0x8]
+    mov    eax,DWORD PTR [esp+0xc]
+    call   DWORD PTR [esp+0x10]
+    pop    ebx
+    .cfi_def_cfa_offset 4
+    ret    0xc
+    .cfi_endproc
+    .size rustix_indirect_syscall3_nr_last_fastcall, .-rustix_indirect_syscall3_nr_last_fastcall
+
+    .section    .text.rustix_indirect_syscall4_nr_last_fastcall,"ax",@progbits
+    .p2align    4
+    .weak       rustix_indirect_syscall4_nr_last_fastcall
+    .hidden     rustix_indirect_syscall4_nr_last_fastcall
+    .type       rustix_indirect_syscall4_nr_last_fastcall, @function
+rustix_indirect_syscall4_nr_last_fastcall:
+    .cfi_startproc
+    push   ebx
+    .cfi_def_cfa_offset 8
+    push   esi
+    .cfi_def_cfa_offset 12
+    .cfi_offset esi, -12
+    .cfi_offset ebx, -8
+    mov    ebx,DWORD PTR [esp+0xc]
+    mov    esi,DWORD PTR [esp+0x10]
+    mov    eax,DWORD PTR [esp+0x14]
+    call   DWORD PTR [esp+0x18]
+    pop    esi
+    .cfi_def_cfa_offset 8
+    pop    ebx
+    .cfi_def_cfa_offset 4
+    ret    0x10
+    .cfi_endproc
+    .size rustix_indirect_syscall4_nr_last_fastcall, .-rustix_indirect_syscall4_nr_last_fastcall
+
+    .section    .text.rustix_indirect_syscall5_nr_last_fastcall,"ax",@progbits
+    .p2align    4
+    .weak       rustix_indirect_syscall5_nr_last_fastcall
+    .hidden     rustix_indirect_syscall5_nr_last_fastcall
+    .type       rustix_indirect_syscall5_nr_last_fastcall, @function
+rustix_indirect_syscall5_nr_last_fastcall:
+    .cfi_startproc
+    push   ebx
+    .cfi_def_cfa_offset 8
+    push   esi
+    .cfi_def_cfa_offset 12
+    push   edi
+    .cfi_def_cfa_offset 16
+    .cfi_offset edi, -16
+    .cfi_offset esi, -12
+    .cfi_offset ebx, -8
+    mov    ebx,DWORD PTR [esp+0x10]
+    mov    esi,DWORD PTR [esp+0x14]
+    mov    edi,DWORD PTR [esp+0x18]
+    mov    eax,DWORD PTR [esp+0x1c]
+    call   DWORD PTR [esp+0x20]
+    pop    edi
+    .cfi_def_cfa_offset 12
+    pop    esi
+    .cfi_def_cfa_offset 8
+    pop    ebx
+    .cfi_def_cfa_offset 4
+    ret    0x14
+    .cfi_endproc
+    .size rustix_indirect_syscall5_nr_last_fastcall, .-rustix_indirect_syscall5_nr_last_fastcall
+
+    .section    .text.rustix_indirect_syscall6_nr_last_fastcall,"ax",@progbits
+    .p2align    4
+    .weak       rustix_indirect_syscall6_nr_last_fastcall
+    .hidden     rustix_indirect_syscall6_nr_last_fastcall
+    .type       rustix_indirect_syscall6_nr_last_fastcall, @function
+rustix_indirect_syscall6_nr_last_fastcall:
+    .cfi_startproc
+    push   ebx
+    .cfi_def_cfa_offset 8
+    push   esi
+    .cfi_def_cfa_offset 12
+    push   edi
+    .cfi_def_cfa_offset 16
+    push   ebp
+    .cfi_def_cfa_offset 20
+    .cfi_offset ebp, -20
+    .cfi_offset edi, -16
+    .cfi_offset esi, -12
+    .cfi_offset ebx, -8
+    mov    ebx,DWORD PTR [esp+0x14]
+    mov    esi,DWORD PTR [esp+0x18]
+    mov    edi,DWORD PTR [esp+0x1c]
+    mov    ebp,DWORD PTR [esp+0x20]
+    mov    eax,DWORD PTR [esp+0x24]
+    call   DWORD PTR [esp+0x28]
+    pop    ebp
+    .cfi_def_cfa_offset 16
+    pop    edi
+    .cfi_def_cfa_offset 12
+    pop    esi
+    .cfi_def_cfa_offset 8
+    pop    ebx
+    .cfi_def_cfa_offset 4
+    ret    0x18
+    .cfi_endproc
+    .size rustix_indirect_syscall6_nr_last_fastcall, .-rustix_indirect_syscall6_nr_last_fastcall
+
+    .section    .text.rustix_syscall0_nr_last_fastcall,"ax",@progbits
+    .p2align    4
+    .weak       rustix_syscall0_nr_last_fastcall
+    .hidden     rustix_syscall0_nr_last_fastcall
+    .type       rustix_syscall0_nr_last_fastcall, @function
+rustix_syscall0_nr_last_fastcall:
+    .cfi_startproc
+    mov    eax,ecx
+    int    0x80
+    ret
+    .cfi_endproc
+    .size rustix_syscall0_nr_last_fastcall, .-rustix_syscall0_nr_last_fastcall
+
+    .section    .text.rustix_syscall1_nr_last_fastcall,"ax",@progbits
+    .p2align    4
+    .weak       rustix_syscall1_nr_last_fastcall
+    .hidden     rustix_syscall1_nr_last_fastcall
+    .type       rustix_syscall1_nr_last_fastcall, @function
+rustix_syscall1_nr_last_fastcall:
+    .cfi_startproc
+    push   ebx
+    .cfi_def_cfa_offset 8
+    .cfi_offset ebx, -8
+    mov    eax,edx
+    mov    ebx,ecx
+    int    0x80
+    pop    ebx
+    .cfi_def_cfa_offset 4
+    ret
+    .cfi_endproc
+    .size rustix_syscall1_nr_last_fastcall, .-rustix_syscall1_nr_last_fastcall
+
+    .section    .text.rustix_syscall1_noreturn_nr_last_fastcall,"ax",@progbits
+    .p2align    4
+    .weak       rustix_syscall1_noreturn_nr_last_fastcall
+    .hidden     rustix_syscall1_noreturn_nr_last_fastcall
+    .type       rustix_syscall1_noreturn_nr_last_fastcall, @function
+rustix_syscall1_noreturn_nr_last_fastcall:
+    .cfi_startproc
+    mov    eax,edx
+    mov    ebx,ecx
+    int    0x80
+    ud2
+    .cfi_endproc
+    .size rustix_syscall1_noreturn_nr_last_fastcall, .-rustix_syscall1_noreturn_nr_last_fastcall
+
+    .section    .text.rustix_syscall2_nr_last_fastcall,"ax",@progbits
+    .p2align    4
+    .weak       rustix_syscall2_nr_last_fastcall
+    .hidden     rustix_syscall2_nr_last_fastcall
+    .type       rustix_syscall2_nr_last_fastcall, @function
+rustix_syscall2_nr_last_fastcall:
+    .cfi_startproc
+    push   ebx
+    .cfi_def_cfa_offset 8
+    .cfi_offset ebx, -8
+    mov    ebx,edx
+    mov    eax,DWORD PTR [esp+0x8]
+    int    0x80
+    pop    ebx
+    .cfi_def_cfa_offset 4
+    ret    0x4
+    .cfi_endproc
+    .size rustix_syscall2_nr_last_fastcall, .-rustix_syscall2_nr_last_fastcall
+
+    .section    .text.rustix_syscall3_nr_last_fastcall,"ax",@progbits
+    .p2align    4
+    .weak       rustix_syscall3_nr_last_fastcall
+    .hidden     rustix_syscall3_nr_last_fastcall
+    .type       rustix_syscall3_nr_last_fastcall, @function
+rustix_syscall3_nr_last_fastcall:
+    .cfi_startproc
+    push   ebx
+    .cfi_def_cfa_offset 8
+    .cfi_offset ebx, -8
+    mov    ebx,DWORD PTR [esp+0x8]
+    mov    eax,DWORD PTR [esp+0xc]
+    int    0x80
+    pop    ebx
+    .cfi_def_cfa_offset 4
+    ret    0x8
+    .cfi_endproc
+    .size rustix_syscall3_nr_last_fastcall, .-rustix_syscall3_nr_last_fastcall
+
+    .section    .text.rustix_syscall4_nr_last_fastcall,"ax",@progbits
+    .p2align    4
+    .weak       rustix_syscall4_nr_last_fastcall
+    .hidden     rustix_syscall4_nr_last_fastcall
+    .type       rustix_syscall4_nr_last_fastcall, @function
+rustix_syscall4_nr_last_fastcall:
+    .cfi_startproc
+    push   ebx
+    .cfi_def_cfa_offset 8
+    push   esi
+    .cfi_def_cfa_offset 12
+    .cfi_offset esi, -12
+    .cfi_offset ebx, -8
+    mov    ebx,DWORD PTR [esp+0xc]
+    mov    esi,DWORD PTR [esp+0x10]
+    mov    eax,DWORD PTR [esp+0x14]
+    int    0x80
+    pop    esi
+    .cfi_def_cfa_offset 8
+    pop    ebx
+    .cfi_def_cfa_offset 4
+    ret    0xc
+    .cfi_endproc
+    .size rustix_syscall4_nr_last_fastcall, .-rustix_syscall4_nr_last_fastcall
+
+    .section    .text.rustix_syscall5_nr_last_fastcall,"ax",@progbits
+    .p2align    4
+    .weak       rustix_syscall5_nr_last_fastcall
+    .hidden     rustix_syscall5_nr_last_fastcall
+    .type       rustix_syscall5_nr_last_fastcall, @function
+rustix_syscall5_nr_last_fastcall:
+    .cfi_startproc
+    push   ebx
+    .cfi_def_cfa_offset 8
+    push   edi
+    .cfi_def_cfa_offset 12
+    push   esi
+    .cfi_def_cfa_offset 16
+    .cfi_offset esi, -16
+    .cfi_offset edi, -12
+    .cfi_offset ebx, -8
+    mov    ebx,DWORD PTR [esp+0x10]
+    mov    esi,DWORD PTR [esp+0x14]
+    mov    edi,DWORD PTR [esp+0x18]
+    mov    eax,DWORD PTR [esp+0x1c]
+    int    0x80
+    pop    esi
+    .cfi_def_cfa_offset 12
+    pop    edi
+    .cfi_def_cfa_offset 8
+    pop    ebx
+    .cfi_def_cfa_offset 4
+    ret    0x10
+    .cfi_endproc
+    .size rustix_syscall5_nr_last_fastcall, .-rustix_syscall5_nr_last_fastcall
+
+    .section    .text.rustix_syscall6_nr_last_fastcall,"ax",@progbits
+    .p2align    4
+    .weak       rustix_syscall6_nr_last_fastcall
+    .hidden     rustix_syscall6_nr_last_fastcall
+    .type       rustix_syscall6_nr_last_fastcall, @function
+rustix_syscall6_nr_last_fastcall:
+    .cfi_startproc
+    push   ebp
+    .cfi_def_cfa_offset 8
+    push   ebx
+    .cfi_def_cfa_offset 12
+    push   edi
+    .cfi_def_cfa_offset 16
+    push   esi
+    .cfi_def_cfa_offset 20
+    .cfi_offset esi, -20
+    .cfi_offset edi, -16
+    .cfi_offset ebx, -12
+    .cfi_offset ebp, -8
+    mov    ebx,DWORD PTR [esp+0x14]
+    mov    esi,DWORD PTR [esp+0x18]
+    mov    edi,DWORD PTR [esp+0x1c]
+    mov    ebp,DWORD PTR [esp+0x20]
+    mov    eax,DWORD PTR [esp+0x24]
+    int    0x80
+    pop    esi
+    .cfi_def_cfa_offset 16
+    pop    edi
+    .cfi_def_cfa_offset 12
+    pop    ebx
+    .cfi_def_cfa_offset 8
+    pop    ebp
+    .cfi_def_cfa_offset 4
+    ret    0x14
+    .cfi_endproc
+    .size rustix_syscall6_nr_last_fastcall, .-rustix_syscall6_nr_last_fastcall
+
+    .section    .text.rustix_int_0x80,"ax",@progbits
+    .p2align    4
+    .weak       rustix_int_0x80
+    .hidden     rustix_int_0x80
+    .type       rustix_int_0x80, @function
+rustix_int_0x80:
+    .cfi_startproc
+    int    0x80
+    ret
+    .cfi_endproc
+    .size rustix_int_0x80, .-rustix_int_0x80
+
+    .section .note.GNU-stack,"",@progbits
diff --git a/vendor/rustix/src/imp/linux_raw/arch/outline/x86_64.s b/vendor/rustix/src/imp/linux_raw/arch/outline/x86_64.s
new file mode 100644
index 000000000..2beda323b
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/arch/outline/x86_64.s
@@ -0,0 +1,122 @@
+// Assembly code for making x86-64 syscalls.
+//
+// x86-64 syscall argument register ordering is the same as the x86-64
+// userspace argument register ordering except that a3 is passed in r10
+// instead of rcx, and the syscall number (nr) is passed in eax.
+//
+// outline.rs takes care of reordering the nr argument to the end for us,
+// so we only need to move nr into eax and move rcx into r10 as needed.
+//
+// x32 is not yet supported.
+
+    .file       "x86_64.s"
+    .intel_syntax noprefix
+
+    .section    .text.rustix_syscall0_nr_last,"ax",@progbits
+    .p2align    4
+    .weak       rustix_syscall0_nr_last
+    .hidden     rustix_syscall0_nr_last
+    .type       rustix_syscall0_nr_last, @function
+rustix_syscall0_nr_last:
+    .cfi_startproc
+    mov    eax,edi
+    syscall
+    ret
+    .cfi_endproc
+    .size rustix_syscall0_nr_last, .-rustix_syscall0_nr_last
+
+    .section    .text.rustix_syscall1_nr_last,"ax",@progbits
+    .p2align    4
+    .weak       rustix_syscall1_nr_last
+    .hidden     rustix_syscall1_nr_last
+    .type       rustix_syscall1_nr_last, @function
+rustix_syscall1_nr_last:
+    .cfi_startproc
+    mov    eax,esi
+    syscall
+    ret
+    .cfi_endproc
+    .size rustix_syscall1_nr_last, .-rustix_syscall1_nr_last
+
+    .section    .text.rustix_syscall1_noreturn_nr_last,"ax",@progbits
+    .p2align    4
+    .weak       rustix_syscall1_noreturn_nr_last
+    .hidden     rustix_syscall1_noreturn_nr_last
+    .type       rustix_syscall1_noreturn_nr_last, @function
+rustix_syscall1_noreturn_nr_last:
+    .cfi_startproc
+    mov    eax,esi
+    syscall
+    ud2
+    .cfi_endproc
+    .size rustix_syscall1_noreturn_nr_last, .-rustix_syscall1_noreturn_nr_last
+
+    .section    .text.rustix_syscall2_nr_last,"ax",@progbits
+    .p2align    4
+    .weak       rustix_syscall2_nr_last
+    .hidden     rustix_syscall2_nr_last
+    .type       rustix_syscall2_nr_last, @function
+rustix_syscall2_nr_last:
+    .cfi_startproc
+    mov    eax,edx
+    syscall
+    ret
+    .cfi_endproc
+    .size rustix_syscall2_nr_last, .-rustix_syscall2_nr_last
+
+    .section    .text.rustix_syscall3_nr_last,"ax",@progbits
+    .p2align    4
+    .weak       rustix_syscall3_nr_last
+    .hidden     rustix_syscall3_nr_last
+    .type       rustix_syscall3_nr_last, @function
+rustix_syscall3_nr_last:
+    .cfi_startproc
+    mov    eax,ecx
+    syscall
+    ret
+    .cfi_endproc
+    .size rustix_syscall3_nr_last, .-rustix_syscall3_nr_last
+
+    .section    .text.rustix_syscall4_nr_last,"ax",@progbits
+    .p2align    4
+    .weak       rustix_syscall4_nr_last
+    .hidden     rustix_syscall4_nr_last
+    .type       rustix_syscall4_nr_last, @function
+rustix_syscall4_nr_last:
+    .cfi_startproc
+    mov    eax,r8d
+    mov    r10,rcx
+    syscall
+    ret
+    .cfi_endproc
+    .size rustix_syscall4_nr_last, .-rustix_syscall4_nr_last
+
+    .section    .text.rustix_syscall5_nr_last,"ax",@progbits
+    .p2align    4
+    .weak       rustix_syscall5_nr_last
+    .hidden     rustix_syscall5_nr_last
+    .type       rustix_syscall5_nr_last, @function
+rustix_syscall5_nr_last:
+    .cfi_startproc
+    mov    eax,r9d
+    mov    r10,rcx
+    syscall
+    ret
+    .cfi_endproc
+    .size rustix_syscall5_nr_last, .-rustix_syscall5_nr_last
+
+    .section    .text.rustix_syscall6_nr_last,"ax",@progbits
+    .p2align    4
+    .weak       rustix_syscall6_nr_last
+    .hidden     rustix_syscall6_nr_last
+    .type       rustix_syscall6_nr_last, @function
+rustix_syscall6_nr_last:
+    .cfi_startproc
+    mov    eax,DWORD PTR [rsp+0x8]
+    mov    r10,rcx
+    syscall
+    ret
+    .cfi_endproc
+    .size rustix_syscall6_nr_last, .-rustix_syscall6_nr_last
+
+    .section .note.GNU-stack,"",@progbits
diff --git a/vendor/rustix/src/imp/linux_raw/c.rs b/vendor/rustix/src/imp/linux_raw/c.rs
new file mode 100644
index 000000000..a6f0b8ff6
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/c.rs
@@ -0,0 +1,29 @@
+//! Adapt the Linux API to resemble a POSIX-style libc API.
+//!
+//! The linux_raw backend doesn't use actual libc; this just defines certain
+//! types that are convenient to have defined.
+
+#![allow(unused_imports)]
+
+pub(crate) use linux_raw_sys::ctypes::*;
+pub(crate) use linux_raw_sys::errno::EINVAL;
+pub(crate) use linux_raw_sys::general::{
+    AF_DECnet, __kernel_sa_family_t as sa_family_t, __kernel_sockaddr_storage as sockaddr_storage,
+    in6_addr, in_addr, iovec, ip_mreq, ipv6_mreq, linger, sockaddr, sockaddr_in, sockaddr_in6,
+    sockaddr_un, socklen_t, AF_APPLETALK, AF_ASH, AF_ATMPVC, AF_ATMSVC, AF_AX25, AF_BLUETOOTH,
+    AF_BRIDGE, AF_CAN, AF_ECONET, AF_IEEE802154, AF_INET, AF_INET6, AF_IPX, AF_IRDA, AF_ISDN,
+    AF_IUCV, AF_KEY, AF_LLC, AF_NETBEUI, AF_NETLINK, AF_NETROM, AF_PACKET, AF_PHONET, AF_PPPOX,
+    AF_RDS, AF_ROSE, AF_RXRPC, AF_SECURITY, AF_SNA, AF_TIPC, AF_UNIX, AF_UNSPEC, AF_WANPIPE,
+    AF_X25, IPPROTO_AH, IPPROTO_BEETPH, IPPROTO_COMP, IPPROTO_DCCP, IPPROTO_EGP, IPPROTO_ENCAP,
+    IPPROTO_ESP, IPPROTO_ETHERNET, IPPROTO_FRAGMENT, IPPROTO_GRE, IPPROTO_ICMP, IPPROTO_ICMPV6,
+    IPPROTO_IDP, IPPROTO_IGMP, IPPROTO_IP, IPPROTO_IPIP, IPPROTO_IPV6, IPPROTO_MH, IPPROTO_MPLS,
+    IPPROTO_MPTCP, IPPROTO_MTP, IPPROTO_PIM, IPPROTO_PUP, IPPROTO_RAW, IPPROTO_ROUTING,
+    IPPROTO_RSVP, IPPROTO_SCTP, IPPROTO_TCP, IPPROTO_TP, IPPROTO_UDP, IPPROTO_UDPLITE,
+    IPV6_ADD_MEMBERSHIP, IPV6_DROP_MEMBERSHIP, IPV6_MULTICAST_LOOP, IPV6_V6ONLY, IP_ADD_MEMBERSHIP,
+    IP_DROP_MEMBERSHIP, IP_MULTICAST_LOOP, IP_MULTICAST_TTL, IP_TTL, MSG_CMSG_CLOEXEC, MSG_CONFIRM,
+    MSG_DONTROUTE, MSG_DONTWAIT, MSG_EOR, MSG_ERRQUEUE, MSG_MORE, MSG_NOSIGNAL, MSG_OOB, MSG_PEEK,
+    MSG_TRUNC, MSG_WAITALL, O_CLOEXEC, O_NONBLOCK, SHUT_RD, SHUT_RDWR, SHUT_WR, SOCK_DGRAM,
+    SOCK_RAW, SOCK_RDM, SOCK_SEQPACKET, SOCK_STREAM, SOL_SOCKET, SO_BROADCAST, SO_LINGER,
+    SO_PASSCRED, SO_RCVTIMEO_NEW, SO_RCVTIMEO_OLD, SO_REUSEADDR, SO_SNDTIMEO_NEW, SO_SNDTIMEO_OLD,
+    SO_TYPE, TCP_NODELAY,
+};
diff --git a/vendor/rustix/src/imp/linux_raw/conv.rs b/vendor/rustix/src/imp/linux_raw/conv.rs
new file mode 100644
index 000000000..c80ad58cc
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/conv.rs
@@ -0,0 +1,770 @@
+//! Convert values to [`ArgReg`] and from [`RetReg`].
+//!
+//! System call arguments and return values are all communicated with inline
+//! asm and FFI as `*mut Opaque`. To protect these raw pointers from escaping
+//! or being accidentally misused as they travel through the code, we wrap
+//! them in [`ArgReg`] and [`RetReg`] structs. This file provides `From`
+//! implementations and explicit conversion functions for converting values
+//! into and out of these wrapper structs.
+//!
+//! # Safety
+//!
+//! Some of this code is `unsafe` in order to work with raw file descriptors,
+//! and some is `unsafe` to interpret the values in a `RetReg`.
+#![allow(unsafe_code)]
+
+use super::c;
+use super::fd::{AsRawFd, BorrowedFd, FromRawFd, RawFd};
+#[cfg(not(debug_assertions))]
+use super::io::errno::decode_usize_infallible;
+#[cfg(feature = "runtime")]
+use super::io::errno::try_decode_error;
+#[cfg(target_pointer_width = "64")]
+use super::io::errno::try_decode_u64;
+use super::io::errno::{
+    try_decode_c_int, try_decode_c_uint, try_decode_raw_fd, try_decode_usize, try_decode_void,
+    try_decode_void_star,
+};
+use super::reg::{raw_arg, ArgNumber, ArgReg, RetReg, R0};
+#[cfg(any(feature = "thread", feature = "time", target_arch = "x86"))]
+use super::time::types::ClockId;
+#[cfg(feature = "time")]
+use super::time::types::TimerfdClockId;
+use crate::ffi::CStr;
+use crate::fs::{FileType, Mode, OFlags};
+use crate::io::{self, OwnedFd};
+use crate::process::{Pid, Resource, Signal};
+use crate::utils::{as_mut_ptr, as_ptr};
+use core::mem::MaybeUninit;
+use core::ptr::null_mut;
+#[cfg(any(feature = "thread", feature = "time", target_arch = "x86"))]
+use linux_raw_sys::general::__kernel_clockid_t;
+#[cfg(target_pointer_width = "64")]
+use linux_raw_sys::general::__kernel_loff_t;
+#[cfg(feature = "net")]
+use linux_raw_sys::general::socklen_t;
+#[cfg(target_pointer_width = "32")]
+use linux_raw_sys::general::O_LARGEFILE;
+
+/// Convert `SYS_*` constants for socketcall.
+#[cfg(target_arch = "x86")]
+#[inline]
+pub(super) fn x86_sys<'a, Num: ArgNumber>(sys: u32) -> ArgReg<'a, Num> {
+    pass_usize(sys as usize)
+}
+
+/// Pass the "low" half of the endian-specific memory encoding of a `u64`, for
+/// 32-bit architectures.
+#[cfg(target_pointer_width = "32")]
+#[inline]
+pub(super) fn lo<'a, Num: ArgNumber>(x: u64) -> ArgReg<'a, Num> {
+    #[cfg(target_endian = "little")]
+    let x = x >> 32;
+    #[cfg(target_endian = "big")]
+    let x = x & 0xffff_ffff;
+
+    pass_usize(x as usize)
+}
+
+/// Pass the "high" half of the endian-specific memory encoding of a `u64`, for
+/// 32-bit architectures.
+#[cfg(target_pointer_width = "32")]
+#[inline]
+pub(super) fn hi<'a, Num: ArgNumber>(x: u64) -> ArgReg<'a, Num> {
+    #[cfg(target_endian = "little")]
+    let x = x & 0xffff_ffff;
+    #[cfg(target_endian = "big")]
+    let x = x >> 32;
+
+    pass_usize(x as usize)
+}
+
+/// Pass a zero, or null, argument.
+#[inline]
+pub(super) fn zero<'a, Num: ArgNumber>() -> ArgReg<'a, Num> {
+    raw_arg(null_mut())
+}
+
+/// Pass the `mem::size_of` of a type.
+#[inline]
+pub(super) fn size_of<'a, T: Sized, Num: ArgNumber>() -> ArgReg<'a, Num> {
+    pass_usize(core::mem::size_of::<T>())
+}
+
+/// Pass an arbitrary `usize` value.
+///
+/// For passing pointers, use `void_star` or other functions which take a raw
+/// pointer instead of casting to `usize`, so that provenance is preserved.
+#[inline]
+pub(super) fn pass_usize<'a, Num: ArgNumber>(t: usize) -> ArgReg<'a, Num> {
+    raw_arg(t as *mut _)
+}
+
+impl<'a, Num: ArgNumber, T> From<*mut T> for ArgReg<'a, Num> {
+    #[inline]
+    fn from(c: *mut T) -> ArgReg<'a, Num> {
+        raw_arg(c.cast())
+    }
+}
+
+impl<'a, Num: ArgNumber, T> From<*const T> for ArgReg<'a, Num> {
+    #[inline]
+    fn from(c: *const T) -> ArgReg<'a, Num> {
+        let mut_ptr = c as *mut T;
+        raw_arg(mut_ptr.cast())
+    }
+}
+
+impl<'a, Num: ArgNumber> From<&'a CStr> for ArgReg<'a, Num> {
+    #[inline]
+    fn from(c: &'a CStr) -> Self {
+        let mut_ptr = c.as_ptr() as *mut u8;
+        raw_arg(mut_ptr.cast())
+    }
+}
+
+impl<'a, Num: ArgNumber> From<Option<&'a CStr>> for ArgReg<'a, Num> {
+    #[inline]
+    fn from(t: Option<&'a CStr>) -> Self {
+        raw_arg(match t {
+            Some(s) => {
+                let mut_ptr = s.as_ptr() as *mut u8;
+                mut_ptr.cast()
+            }
+            None => null_mut(),
+        })
+    }
+}
+
+/// Pass a borrowed file-descriptor argument.
+impl<'a, Num: ArgNumber> From<BorrowedFd<'a>> for ArgReg<'a, Num> {
+    #[inline]
+    fn from(fd: BorrowedFd<'a>) -> Self {
+        // Safety: `BorrowedFd` ensures that the file descriptor is valid, and the
+        // lifetime parameter on the resulting `ArgReg` ensures that the result is
+        // bounded by the `BorrowedFd`'s lifetime.
+        unsafe { raw_fd(fd.as_raw_fd()) }
+    }
+}
+
+/// Pass a raw file-descriptor argument. Most users should use [`ArgReg::from`]
+/// instead, to preserve I/O safety as long as possible.
+///
+/// # Safety
+///
+/// `fd` must be a valid open file descriptor.
+#[inline]
+pub(super) unsafe fn raw_fd<'a, Num: ArgNumber>(fd: RawFd) -> ArgReg<'a, Num> {
+    // Use `no_fd` when passing `-1` is intended.
+    debug_assert!(fd == crate::fs::cwd().as_raw_fd() || fd >= 0);
+
+    // Don't pass the `io_uring_register_files_skip` sentry value this way.
+    #[cfg(feature = "io_uring")]
+    debug_assert_ne!(
+        fd,
+        crate::io_uring::io_uring_register_files_skip().as_raw_fd()
+    );
+
+    // Linux doesn't look at the high bits beyond the `c_int`, so use
+    // zero-extension rather than sign-extension because it's a smaller
+    // instruction.
+    let fd: c::c_int = fd;
+    pass_usize(fd as c::c_uint as usize)
+}
+
+/// Deliberately pass `-1` to a file-descriptor argument, for system calls
+/// like `mmap` where this indicates the argument is omitted.
+#[inline]
+pub(super) fn no_fd<'a, Num: ArgNumber>() -> ArgReg<'a, Num> {
+    pass_usize(!0_usize)
+}
+
+#[inline]
+pub(super) fn slice_just_addr<T: Sized, Num: ArgNumber>(v: &[T]) -> ArgReg<Num> {
+    let mut_ptr = v.as_ptr() as *mut T;
+    raw_arg(mut_ptr.cast())
+}
+
+#[inline]
+pub(super) fn slice<T: Sized, Num0: ArgNumber, Num1: ArgNumber>(
+    v: &[T],
+) -> (ArgReg<Num0>, ArgReg<Num1>) {
+    (slice_just_addr(v), pass_usize(v.len()))
+}
+
+#[inline]
+pub(super) fn slice_mut<T: Sized, Num0: ArgNumber, Num1: ArgNumber>(
+    v: &mut [T],
+) -> (ArgReg<Num0>, ArgReg<Num1>) {
+    (raw_arg(v.as_mut_ptr().cast()), pass_usize(v.len()))
+}
+
+#[inline]
+pub(super) fn by_ref<T: Sized, Num: ArgNumber>(t: &T) -> ArgReg<Num> {
+    let mut_ptr = as_ptr(t) as *mut T;
+    raw_arg(mut_ptr.cast())
+}
+
+#[inline]
+pub(super) fn by_mut<T: Sized, Num: ArgNumber>(t: &mut T) -> ArgReg<Num> {
+    raw_arg(as_mut_ptr(t).cast())
+}
+
+/// Convert an optional mutable reference into a `usize` for passing to a
+/// syscall.
+#[inline]
+pub(super) fn opt_mut<T: Sized, Num: ArgNumber>(t: Option<&mut T>) -> ArgReg<Num> {
+    // This optimizes into the equivalent of `transmute(t)`, and has the
+    // advantage of not requiring `unsafe`.
+    match t {
+        Some(t) => by_mut(t),
+        None => raw_arg(null_mut()),
+    }
+}
+
+/// Convert an optional immutable reference into a `usize` for passing to a
+/// syscall.
+#[cfg(any(target_arch = "aarch64", target_arch = "riscv64"))]
+#[inline]
+pub(super) fn opt_ref<'a, T: Sized, Num: ArgNumber>(t: Option<&'a T>) -> ArgReg<'a, Num> {
+    // This optimizes into the equivalent of `transmute(t)`, and has the
+    // advantage of not requiring `unsafe`.
+    match t {
+        Some(t) => by_ref(t),
+        None => raw_arg(null_mut()),
+    }
+}
+
+/// Convert a `c_int` into an `ArgReg`.
+///
+/// Be sure to use `raw_fd` to pass `RawFd` values.
+#[inline]
+pub(super) fn c_int<'a, Num: ArgNumber>(i: c::c_int) -> ArgReg<'a, Num> {
+    pass_usize(i as usize)
+}
+
+/// Convert a `c_uint` into an `ArgReg`.
+#[inline]
+pub(super) fn c_uint<'a, Num: ArgNumber>(i: c::c_uint) -> ArgReg<'a, Num> {
+    pass_usize(i as usize)
+}
+
+#[cfg(target_pointer_width = "64")]
+#[inline]
+pub(super) fn loff_t<'a, Num: ArgNumber>(i: __kernel_loff_t) -> ArgReg<'a, Num> {
+    pass_usize(i as usize)
+}
+
+#[cfg(target_pointer_width = "64")]
+#[inline]
+pub(super) fn loff_t_from_u64<'a, Num: ArgNumber>(i: u64) -> ArgReg<'a, Num> {
+    // `loff_t` is signed, but syscalls which expect `loff_t` return `EINVAL`
+    // if it's outside the signed `i64` range, so we can silently cast.
+    pass_usize(i as usize)
+}
+
+#[cfg(any(feature = "thread", feature = "time", target_arch = "x86"))]
+impl<'a, Num: ArgNumber> From<ClockId> for ArgReg<'a, Num> {
+    #[inline]
+    fn from(i: ClockId) -> Self {
+        pass_usize(i as __kernel_clockid_t as usize)
+    }
+}
+
+#[cfg(feature = "time")]
+impl<'a, Num: ArgNumber> From<TimerfdClockId> for ArgReg<'a, Num> {
+    #[inline]
+    fn from(i: TimerfdClockId) -> Self {
+        pass_usize(i as __kernel_clockid_t as usize)
+    }
+}
+
+#[cfg(feature = "net")]
+#[inline]
+pub(super) fn socklen_t<'a, Num: ArgNumber>(i: socklen_t) -> ArgReg<'a, Num> {
+    pass_usize(i as usize)
+}
+
+impl<'a, Num: ArgNumber> From<Mode> for ArgReg<'a, Num> {
+    #[inline]
+    fn from(mode: Mode) -> Self {
+        pass_usize(mode.bits() as usize)
+    }
+}
+
+impl<'a, Num: ArgNumber> From<(Mode, FileType)> for ArgReg<'a, Num> {
+    #[inline]
+    fn from(pair: (Mode, FileType)) -> Self {
+        pass_usize(pair.0.as_raw_mode() as usize | pair.1.as_raw_mode() as usize)
+    }
+}
+
+impl<'a, Num: ArgNumber> From<crate::fs::AtFlags> for ArgReg<'a, Num> {
+    #[inline]
+    fn from(flags: crate::fs::AtFlags) -> Self {
+        c_uint(flags.bits())
+    }
+}
+
+impl<'a, Num: ArgNumber> From<crate::fs::MemfdFlags> for ArgReg<'a, Num> {
+    #[inline]
+    fn from(flags: crate::fs::MemfdFlags) -> Self {
+        c_uint(flags.bits())
+    }
+}
+
+impl<'a, Num: ArgNumber> From<crate::fs::RenameFlags> for ArgReg<'a, Num> {
+    #[inline]
+    fn from(flags: crate::fs::RenameFlags) -> Self {
+        c_uint(flags.bits())
+    }
+}
+
+impl<'a, Num: ArgNumber> From<crate::fs::StatxFlags> for ArgReg<'a, Num> {
+    #[inline]
+    fn from(flags: crate::fs::StatxFlags) -> Self {
+        c_uint(flags.bits())
+    }
+}
+
+impl<'a, Num: ArgNumber> From<crate::fs::FdFlags> for ArgReg<'a, Num> {
+    #[inline]
+    fn from(flags: crate::fs::FdFlags) -> Self {
+        c_uint(flags.bits())
+    }
+}
+
+impl<'a, Num: ArgNumber> From<crate::io::PipeFlags> for ArgReg<'a, Num> {
+    #[inline]
+    fn from(flags: crate::io::PipeFlags) -> Self {
+        c_uint(flags.bits())
+    }
+}
+
+impl<'a, Num: ArgNumber> From<crate::io::DupFlags> for ArgReg<'a, Num> {
+    #[inline]
+    fn from(flags: crate::io::DupFlags) -> Self {
+        c_uint(flags.bits())
+    }
+}
+
+impl<'a, Num: ArgNumber> From<crate::io::ReadWriteFlags> for ArgReg<'a, Num> {
+    #[inline]
+    fn from(flags: crate::io::ReadWriteFlags) -> Self {
+        c_uint(flags.bits())
+    }
+}
+
+impl<'a, Num: ArgNumber> From<crate::io::EventfdFlags> for ArgReg<'a, Num> {
+    #[inline]
+    fn from(flags: crate::io::EventfdFlags) -> Self {
+        c_uint(flags.bits())
+    }
+}
+
+impl<'a, Num: ArgNumber> From<crate::io::epoll::CreateFlags> for ArgReg<'a, Num> {
+    #[inline]
+    fn from(flags: crate::io::epoll::CreateFlags) -> Self {
+        c_uint(flags.bits())
+    }
+}
+
+#[cfg(any(feature = "mm", feature = "time", target_arch = "x86"))] // vdso.rs uses `madvise`
+impl<'a, Num: ArgNumber> From<crate::imp::mm::types::ProtFlags> for ArgReg<'a, Num> {
+    #[inline]
+    fn from(flags: crate::imp::mm::types::ProtFlags) -> Self {
+        c_uint(flags.bits())
+    }
+}
+
+#[cfg(any(feature = "mm", feature = "time", target_arch = "x86"))] // vdso.rs uses `madvise`
+impl<'a, Num: ArgNumber> From<crate::imp::mm::types::MsyncFlags> for ArgReg<'a, Num> {
+    #[inline]
+    fn from(flags: crate::imp::mm::types::MsyncFlags) -> Self {
+        c_uint(flags.bits())
+    }
+}
+
+#[cfg(any(feature = "mm", feature = "time", target_arch = "x86"))] // vdso.rs uses `madvise`
+impl<'a, Num: ArgNumber> From<crate::imp::mm::types::MremapFlags> for ArgReg<'a, Num> {
+    #[inline]
+    fn from(flags: crate::imp::mm::types::MremapFlags) -> Self {
+        c_uint(flags.bits())
+    }
+}
+
+#[cfg(any(feature = "mm", feature = "time", target_arch = "x86"))] // vdso.rs uses `madvise`
+impl<'a, Num: ArgNumber> From<crate::imp::mm::types::MlockFlags> for ArgReg<'a, Num> {
+    #[inline]
+    fn from(flags: crate::imp::mm::types::MlockFlags) -> Self {
+        c_uint(flags.bits())
+    }
+}
+
+#[cfg(any(feature = "mm", feature = "time", target_arch = "x86"))] // vdso.rs uses `madvise`
+impl<'a, Num: ArgNumber> From<crate::imp::mm::types::MapFlags> for ArgReg<'a, Num> {
+    #[inline]
+    fn from(flags: crate::imp::mm::types::MapFlags) -> Self {
+        c_uint(flags.bits())
+    }
+}
+
+#[cfg(any(feature = "mm", feature = "time", target_arch = "x86"))] // vdso.rs uses `madvise`
+impl<'a, Num: ArgNumber> From<crate::imp::mm::types::MprotectFlags> for ArgReg<'a, Num> {
+    #[inline]
+    fn from(flags: crate::imp::mm::types::MprotectFlags) -> Self {
+        c_uint(flags.bits())
+    }
+}
+
+#[cfg(any(feature = "mm", feature = "time", target_arch = "x86"))] // vdso.rs uses `madvise`
+impl<'a, Num: ArgNumber> From<crate::imp::mm::types::UserfaultfdFlags> for ArgReg<'a, Num> {
+    #[inline]
+    fn from(flags: crate::imp::mm::types::UserfaultfdFlags) -> Self {
+        c_uint(flags.bits())
+    }
+}
+
+impl<'a, Num: ArgNumber> From<crate::imp::process::types::MembarrierCommand> for ArgReg<'a, Num> {
+    #[inline]
+    fn from(cmd: crate::imp::process::types::MembarrierCommand) -> Self {
+        c_uint(cmd as u32)
+    }
+}
+
+impl<'a, Num: ArgNumber> From<crate::process::Cpuid> for ArgReg<'a, Num> {
+    #[inline]
+    fn from(cpuid: crate::process::Cpuid) -> Self {
+        c_uint(cpuid.as_raw())
+    }
+}
+
+#[cfg(target_pointer_width = "64")]
+#[inline]
+pub(super) fn dev_t<'a, Num: ArgNumber>(dev: u64) -> ArgReg<'a, Num> {
+    pass_usize(dev as usize)
+}
+
+#[cfg(target_pointer_width = "32")]
+#[inline]
+pub(super) fn dev_t<'a, Num: ArgNumber>(dev: u64) -> io::Result<ArgReg<'a, Num>> {
+    use core::convert::TryInto;
+    Ok(pass_usize(dev.try_into().map_err(|_err| io::Errno::INVAL)?))
+}
+
+#[cfg(target_pointer_width = "32")]
+#[inline]
+fn oflags_bits(oflags: OFlags) -> c::c_uint {
+    let mut bits = oflags.bits();
+    // Add `O_LARGEFILE`, unless `O_PATH` is set, as Linux returns `EINVAL`
+    // when both are set.
+    if !oflags.contains(OFlags::PATH) {
+        bits |= O_LARGEFILE;
+    }
+    bits
+}
+
+#[cfg(target_pointer_width = "64")]
+#[inline]
+const fn oflags_bits(oflags: OFlags) -> c::c_uint {
+    oflags.bits()
+}
+
+impl<'a, Num: ArgNumber> From<OFlags> for ArgReg<'a, Num> {
+    #[inline]
+    fn from(oflags: OFlags) -> Self {
+        pass_usize(oflags_bits(oflags) as usize)
+    }
+}
+
+/// Convert an `OFlags` into a `u64` for use in the `open_how` struct.
+#[inline]
+pub(super) fn oflags_for_open_how(oflags: OFlags) -> u64 {
+    u64::from(oflags_bits(oflags))
+}
+
+impl<'a, Num: ArgNumber> From<crate::fs::FallocateFlags> for ArgReg<'a, Num> {
+    #[inline]
+    fn from(flags: crate::fs::FallocateFlags) -> Self {
+        c_uint(flags.bits())
+    }
+}
+
+/// Convert a `Resource` into a syscall argument.
+impl<'a, Num: ArgNumber> From<Resource> for ArgReg<'a, Num> {
+    #[inline]
+    fn from(resource: Resource) -> Self {
+        c_uint(resource as c::c_uint)
+    }
+}
+
+impl<'a, Num: ArgNumber> From<Pid> for ArgReg<'a, Num> {
+    #[inline]
+    fn from(pid: Pid) -> Self {
+        pass_usize(pid.as_raw_nonzero().get() as usize)
+    }
+}
+
+#[inline]
+pub(super) fn negative_pid<'a, Num: ArgNumber>(pid: Pid) -> ArgReg<'a, Num> {
+    pass_usize(pid.as_raw_nonzero().get().wrapping_neg() as usize)
+}
+
+impl<'a, Num: ArgNumber> From<Signal> for ArgReg<'a, Num> {
+    #[inline]
+    fn from(sig: Signal) -> Self {
+        pass_usize(sig as usize)
+    }
+}
+
+impl<'a, Num: ArgNumber> From<crate::fs::Advice> for ArgReg<'a, Num> {
+    #[inline]
+    fn from(advice: crate::fs::Advice) -> Self {
+        c_uint(advice as c::c_uint)
+    }
+}
+
+impl<'a, Num: ArgNumber> From<crate::fs::SealFlags> for ArgReg<'a, Num> {
+    #[inline]
+    fn from(flags: crate::fs::SealFlags) -> Self {
+        c_uint(flags.bits())
+    }
+}
+
+#[cfg(feature = "io_uring")]
+impl<'a, Num: ArgNumber> From<crate::io_uring::IoringEnterFlags> for ArgReg<'a, Num> {
+    #[inline]
+    fn from(flags: crate::io_uring::IoringEnterFlags) -> Self {
+        c_uint(flags.bits())
+    }
+}
+
+#[cfg(feature = "time")]
+impl<'a, Num: ArgNumber> From<crate::time::TimerfdFlags> for ArgReg<'a, Num> {
+    #[inline]
+    fn from(flags: crate::time::TimerfdFlags) -> Self {
+        c_uint(flags.bits())
+    }
+}
+
+#[cfg(feature = "time")]
+impl<'a, Num: ArgNumber> From<crate::time::TimerfdTimerFlags> for ArgReg<'a, Num> {
+    #[inline]
+    fn from(flags: crate::time::TimerfdTimerFlags) -> Self {
+        c_uint(flags.bits())
+    }
+}
+
+#[cfg(feature = "rand")]
+impl<'a, Num: ArgNumber> From<crate::rand::GetRandomFlags> for ArgReg<'a, Num> {
+    #[inline]
+    fn from(flags: crate::rand::GetRandomFlags) -> Self {
+        c_uint(flags.bits())
+    }
+}
+
+#[cfg(feature = "net")]
+impl<'a, Num: ArgNumber> From<crate::net::RecvFlags> for ArgReg<'a, Num> {
+    #[inline]
+    fn from(flags: crate::net::RecvFlags) -> Self {
+        c_uint(flags.bits())
+    }
+}
+
+#[cfg(feature = "net")]
+impl<'a, Num: ArgNumber> From<crate::net::SendFlags> for ArgReg<'a, Num> {
+    #[inline]
+    fn from(flags: crate::net::SendFlags) -> Self {
+        c_uint(flags.bits())
+    }
+}
+
+#[cfg(feature = "net")]
+impl<'a, Num: ArgNumber> From<crate::net::AcceptFlags> for ArgReg<'a, Num> {
+    #[inline]
+    fn from(flags: crate::net::AcceptFlags) -> Self {
+        c_uint(flags.bits())
+    }
+}
+
+#[cfg(feature = "net")]
+impl<'a, Num: ArgNumber> From<crate::net::AddressFamily> for ArgReg<'a, Num> {
+    #[inline]
+    fn from(family: crate::net::AddressFamily) -> Self {
+        c_uint(family.0.into())
+    }
+}
+
+#[cfg(feature = "net")]
+impl<'a, Num: ArgNumber> From<(crate::net::SocketType, crate::net::SocketFlags)>
+    for ArgReg<'a, Num>
+{
+    #[inline]
+    fn from(pair: (crate::net::SocketType, crate::net::SocketFlags)) -> Self {
+        c_uint(pair.0 .0 | pair.1.bits())
+    }
+}
+
+#[cfg(feature = "thread")]
+impl<'a, Num: ArgNumber> From<(crate::thread::FutexOperation, crate::thread::FutexFlags)>
+    for ArgReg<'a, Num>
+{
+    #[inline]
+    fn from(pair: (crate::thread::FutexOperation, crate::thread::FutexFlags)) -> Self {
+        c_uint(pair.0 as u32 | pair.1.bits())
+    }
+}
+
+impl<'a, Num: ArgNumber> From<crate::fs::Access> for ArgReg<'a, Num> {
+    #[inline]
+    fn from(access: crate::fs::Access) -> Self {
+        c_uint(access.bits())
+    }
+}
+
+#[cfg(feature = "net")]
+impl<'a, Num: ArgNumber> From<crate::net::SocketType> for ArgReg<'a, Num> {
+    #[inline]
+    fn from(type_: crate::net::SocketType) -> Self {
+        c_uint(type_.0)
+    }
+}
+
+#[cfg(feature = "net")]
+impl<'a, Num: ArgNumber> From<crate::net::Protocol> for ArgReg<'a, Num> {
+    #[inline]
+    fn from(protocol: crate::net::Protocol) -> Self {
+        c_uint(protocol.0)
+    }
+}
+
+impl<'a, Num: ArgNumber, T> From<&'a mut MaybeUninit<T>> for ArgReg<'a, Num> {
+    #[inline]
+    fn from(t: &'a mut MaybeUninit<T>) -> Self {
+        raw_arg(t.as_mut_ptr().cast())
+    }
+}
+
+/// Convert a `usize` returned from a syscall that effectively returns `()` on
+/// success.
+///
+/// # Safety
+///
+/// The caller must ensure that this is the return value of a syscall which
+/// just returns 0 on success.
+#[inline]
+pub(super) unsafe fn ret(raw: RetReg<R0>) -> io::Result<()> {
+    try_decode_void(raw)
+}
+
+/// Convert a `usize` returned from a syscall that doesn't return on success.
+///
+/// # Safety
+///
+/// The caller must ensure that this is the return value of a syscall which
+/// doesn't return on success.
+#[cfg(feature = "runtime")]
+#[inline]
+pub(super) unsafe fn ret_error(raw: RetReg<R0>) -> io::Errno {
+    try_decode_error(raw)
+}
+
+/// Convert a `usize` returned from a syscall that effectively always returns
+/// `()`.
+///
+/// # Safety
+///
+/// The caller must ensure that this is the return value of a syscall which
+/// always returns `()`.
+#[inline]
+pub(super) unsafe fn ret_infallible(raw: RetReg<R0>) {
+    #[cfg(debug_assertions)]
+    {
+        try_decode_void(raw).unwrap()
+    }
+    #[cfg(not(debug_assertions))]
+    drop(raw);
+}
+
+/// Convert a `usize` returned from a syscall that effectively returns a
+/// `c_int` on success.
+#[inline]
+pub(super) fn ret_c_int(raw: RetReg<R0>) -> io::Result<c::c_int> {
+    try_decode_c_int(raw)
+}
+
+/// Convert a `usize` returned from a syscall that effectively returns a
+/// `c_uint` on success.
+#[inline]
+pub(super) fn ret_c_uint(raw: RetReg<R0>) -> io::Result<c::c_uint> {
+    try_decode_c_uint(raw)
+}
+
+/// Convert a `usize` returned from a syscall that effectively returns a `u64`
+/// on success.
+#[cfg(target_pointer_width = "64")]
+#[inline]
+pub(super) fn ret_u64(raw: RetReg<R0>) -> io::Result<u64> {
+    try_decode_u64(raw)
+}
+
+/// Convert a `usize` returned from a syscall that effectively returns a
+/// `usize` on success.
+#[inline]
+pub(super) fn ret_usize(raw: RetReg<R0>) -> io::Result<usize> {
+    try_decode_usize(raw)
+}
+
+/// Convert a `usize` returned from a syscall that effectively always
+/// returns a `usize`.
+///
+/// # Safety
+///
+/// This function must only be used with return values from infallible
+/// syscalls.
+#[inline]
+pub(super) unsafe fn ret_usize_infallible(raw: RetReg<R0>) -> usize {
+    #[cfg(debug_assertions)]
+    {
+        try_decode_usize(raw).unwrap()
+    }
+    #[cfg(not(debug_assertions))]
+    {
+        decode_usize_infallible(raw)
+    }
+}
+
+/// Convert a `usize` returned from a syscall that effectively returns an
+/// `OwnedFd` on success.
+///
+/// # Safety
+///
+/// The caller must ensure that this is the return value of a syscall which
+/// returns an owned file descriptor.
+#[inline]
+pub(super) unsafe fn ret_owned_fd(raw: RetReg<R0>) -> io::Result<OwnedFd> {
+    let raw_fd = try_decode_raw_fd(raw)?;
+    Ok(OwnedFd::from(crate::imp::fd::OwnedFd::from_raw_fd(raw_fd)))
+}
+
+/// Convert the return value of `dup2` and `dup3`.
+///
+/// When these functions succeed, they return the same value as their second
+/// argument, so we don't construct a new `OwnedFd`.
+///
+/// # Safety
+///
+/// The caller must ensure that this is the return value of a syscall which
+/// returns a file descriptor.
+#[inline]
+pub(super) unsafe fn ret_discarded_fd(raw: RetReg<R0>) -> io::Result<()> {
+    let _raw_fd = try_decode_raw_fd(raw)?;
+    Ok(())
+}
+
+/// Convert a `usize` returned from a syscall that effectively returns a
+/// `*mut c_void` on success.
+#[inline]
+pub(super) fn ret_void_star(raw: RetReg<R0>) -> io::Result<*mut c::c_void> {
+    try_decode_void_star(raw)
+}
diff --git a/vendor/rustix/src/imp/linux_raw/elf.rs b/vendor/rustix/src/imp/linux_raw/elf.rs
new file mode 100644
index 000000000..7b9bb3245
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/elf.rs
@@ -0,0 +1,172 @@
+//! The ELF ABI.
+
+#![allow(non_snake_case)]
+
+pub(super) const SELFMAG: usize = 4;
+pub(super) const ELFMAG: [u8; SELFMAG] = [0x7f, b'E', b'L', b'F'];
+pub(super) const EI_CLASS: usize = 4;
+pub(super) const EI_DATA: usize = 5;
+pub(super) const EI_VERSION: usize = 6;
+pub(super) const EI_OSABI: usize = 7;
+pub(super) const EI_ABIVERSION: usize = 8;
+pub(super) const EV_CURRENT: u8 = 1;
+#[cfg(target_pointer_width = "32")]
+pub(super) const ELFCLASS: u8 = 1; // ELFCLASS32
+#[cfg(target_pointer_width = "64")]
+pub(super) const ELFCLASS: u8 = 2; // ELFCLASS64
+#[cfg(target_endian = "little")]
+pub(super) const ELFDATA: u8 = 1; // ELFDATA2LSB
+#[cfg(target_endian = "big")]
+pub(super) const ELFDATA: u8 = 2; // ELFDATA2MSB
+pub(super) const ELFOSABI_SYSV: u8 = 0;
+pub(super) const ELFOSABI_LINUX: u8 = 3;
+// At present all of our supported platforms use 0.
+pub(super) const ELFABIVERSION: u8 = 0;
+pub(super) const ET_DYN: u16 = 3;
+pub(super) const EI_NIDENT: usize = 16;
+pub(super) const SHN_UNDEF: u16 = 0;
+pub(super) const SHN_ABS: u16 = 0xfff1;
+pub(super) const PN_XNUM: u16 = 0xffff;
+pub(super) const PT_LOAD: u32 = 1;
+pub(super) const PT_DYNAMIC: u32 = 2;
+pub(super) const PT_INTERP: u32 = 3;
+pub(super) const PT_PHDR: u32 = 6;
+pub(super) const PT_TLS: u32 = 7;
+pub(super) const PT_GNU_STACK: u32 = 0x6474_e551;
+pub(super) const PT_GNU_RELRO: u32 = 0x6474_e552;
+pub(super) const PF_X: u32 = 1;
+pub(super) const PF_W: u32 = 2;
+pub(super) const PF_R: u32 = 4;
+pub(super) const DT_NULL: i32 = 0;
+pub(super) const DT_HASH: i32 = 4;
+pub(super) const DT_STRTAB: i32 = 5;
+pub(super) const DT_SYMTAB: i32 = 6;
+pub(super) const DT_SYMENT: i32 = 11;
+pub(super) const DT_VERSYM: i32 = 0x6fff_fff0;
+pub(super) const DT_VERDEF: i32 = 0x6fff_fffc;
+pub(super) const STB_WEAK: u8 = 2;
+pub(super) const STB_GLOBAL: u8 = 1;
+pub(super) const STT_NOTYPE: u8 = 0;
+pub(super) const STT_FUNC: u8 = 2;
+pub(super) const STN_UNDEF: u32 = 0;
+pub(super) const VER_FLG_BASE: u16 = 0x1;
+pub(super) const VER_DEF_CURRENT: u16 = 1;
+pub(super) const STV_DEFAULT: u8 = 0;
+#[cfg(target_arch = "arm")]
+pub(super) const EM_CURRENT: u16 = 40; // EM_ARM
+#[cfg(target_arch = "x86")]
+pub(super) const EM_CURRENT: u16 = 3; // EM_386
+#[cfg(target_arch = "powerpc64")]
+pub(super) const EM_CURRENT: u16 = 21; // EM_PPC64
+#[cfg(any(target_arch = "mips", target_arch = "mips64"))]
+pub(super) const EM_CURRENT: u16 = 8; // EM_MIPS
+#[cfg(target_arch = "x86_64")]
+pub(super) const EM_CURRENT: u16 = 62; // EM_X86_64
+#[cfg(target_arch = "aarch64")]
+pub(super) const EM_CURRENT: u16 = 183; // EM_AARCH64
+#[cfg(target_arch = "riscv64")]
+pub(super) const EM_CURRENT: u16 = 243; // EM_RISCV
+
+#[inline]
+pub(super) const fn ELF_ST_VISIBILITY(o: u8) -> u8 {
+    o & 0x03
+}
+
+#[inline]
+pub(super) const fn ELF_ST_BIND(val: u8) -> u8 {
+    val >> 4
+}
+
+#[inline]
+pub(super) const fn ELF_ST_TYPE(val: u8) -> u8 {
+    val & 0xf
+}
+
+#[repr(C)]
+pub(super) struct Elf_Ehdr {
+    pub(super) e_ident: [u8; EI_NIDENT],
+    pub(super) e_type: u16,
+    pub(super) e_machine: u16,
+    pub(super) e_version: u32,
+    pub(super) e_entry: usize,
+    pub(super) e_phoff: usize,
+    pub(super) e_shoff: usize,
+    pub(super) e_flags: u32,
+    pub(super) e_ehsize: u16,
+    pub(super) e_phentsize: u16,
+    pub(super) e_phnum: u16,
+    pub(super) e_shentsize: u16,
+    pub(super) e_shnum: u16,
+    pub(super) e_shstrndx: u16,
+}
+
+#[cfg(target_pointer_width = "32")]
+#[repr(C)]
+pub(super) struct Elf_Phdr {
+    pub(super) p_type: u32,
+    pub(super) p_offset: usize,
+    pub(super) p_vaddr: usize,
+    pub(super) p_paddr: usize,
+    pub(super) p_filesz: usize,
+    pub(super) p_memsz: usize,
+    pub(super) p_flags: u32,
+    pub(super) p_align: usize,
+}
+
+#[cfg(target_pointer_width = "64")]
+#[repr(C)]
+pub(super) struct Elf_Phdr {
+    pub(super) p_type: u32,
+    pub(super) p_flags: u32,
+    pub(super) p_offset: usize,
+    pub(super) p_vaddr: usize,
+    pub(super) p_paddr: usize,
+    pub(super) p_filesz: usize,
+    pub(super) p_memsz: usize,
+    pub(super) p_align: usize,
+}
+
+#[cfg(target_pointer_width = "32")]
+#[repr(C)]
+pub(super) struct Elf_Sym {
+    pub(super) st_name: u32,
+    pub(super) st_value: usize,
+    pub(super) st_size: usize,
+    pub(super) st_info: u8,
+    pub(super) st_other: u8,
+    pub(super) st_shndx: u16,
+}
+
+#[cfg(target_pointer_width = "64")]
+#[repr(C)]
+pub(super) struct Elf_Sym {
+    pub(super) st_name: u32,
+    pub(super) st_info: u8,
+    pub(super) st_other: u8,
+    pub(super) st_shndx: u16,
+    pub(super) st_value: usize,
+    pub(super) st_size: usize,
+}
+
+#[repr(C)]
+pub(super) struct Elf_Dyn {
+    pub(super) d_tag: i32,
+    pub(super) d_val: usize,
+}
+
+#[repr(C)]
+pub(super) struct Elf_Verdef {
+    pub(super) vd_version: u16,
+    pub(super) vd_flags: u16,
+    pub(super) vd_ndx: u16,
+    pub(super) vd_cnt: u16,
+    pub(super) vd_hash: u32,
+    pub(super) vd_aux: u32,
+    pub(super) vd_next: u32,
+}
+
+#[repr(C)]
+pub(super) struct Elf_Verdaux {
+    pub(super) vda_name: u32,
+    pub(super) _vda_next: u32,
+}
diff --git a/vendor/rustix/src/imp/linux_raw/fs/dir.rs b/vendor/rustix/src/imp/linux_raw/fs/dir.rs
new file mode 100644
index 000000000..64f5aa652
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/fs/dir.rs
@@ -0,0 +1,213 @@
+use crate::fd::{AsFd, BorrowedFd};
+use crate::ffi::{CStr, CString};
+use crate::fs::{fcntl_getfl, fstat, fstatfs, openat, FileType, Mode, OFlags, Stat, StatFs};
+use crate::io::{self, OwnedFd};
+use crate::process::fchdir;
+use crate::utils::as_ptr;
+use alloc::borrow::ToOwned;
+use alloc::vec::Vec;
+use core::fmt;
+use core::mem::size_of;
+use linux_raw_sys::general::{linux_dirent64, SEEK_SET};
+
+/// `DIR*`
+pub struct Dir {
+    /// The `OwnedFd` that we read directory entries from.
+    fd: OwnedFd,
+
+    buf: Vec<u8>,
+    pos: usize,
+    next: Option<u64>,
+}
+
+impl Dir {
+    /// Construct a `Dir` that reads entries from the given directory
+    /// file descriptor.
+    #[inline]
+    pub fn read_from<Fd: AsFd>(fd: Fd) -> io::Result<Self> {
+        Self::_read_from(fd.as_fd())
+    }
+
+    #[inline]
+    fn _read_from(fd: BorrowedFd<'_>) -> io::Result<Self> {
+        let flags = fcntl_getfl(fd)?;
+        let fd_for_dir = openat(fd, cstr!("."), flags | OFlags::CLOEXEC, Mode::empty())?;
+
+        Ok(Self {
+            fd: fd_for_dir,
+            buf: Vec::new(),
+            pos: 0,
+            next: None,
+        })
+    }
+
+    /// `rewinddir(self)`
+    #[inline]
+    pub fn rewind(&mut self) {
+        self.pos = self.buf.len();
+        self.next = Some(0);
+    }
+
+    /// `readdir(self)`, where `None` means the end of the directory.
+    pub fn read(&mut self) -> Option<io::Result<DirEntry>> {
+        if let Some(next) = self.next.take() {
+            match crate::imp::fs::syscalls::_seek(self.fd.as_fd(), next as i64, SEEK_SET) {
+                Ok(_) => (),
+                Err(err) => return Some(Err(err)),
+            }
+        }
+
+        // Compute linux_dirent64 field offsets.
+        let z = linux_dirent64 {
+            d_ino: 0_u64,
+            d_off: 0_i64,
+            d_type: 0_u8,
+            d_reclen: 0_u16,
+            d_name: Default::default(),
+        };
+        let base = as_ptr(&z) as usize;
+        let offsetof_d_reclen = (as_ptr(&z.d_reclen) as usize) - base;
+        let offsetof_d_name = (as_ptr(&z.d_name) as usize) - base;
+        let offsetof_d_ino = (as_ptr(&z.d_ino) as usize) - base;
+        let offsetof_d_type = (as_ptr(&z.d_type) as usize) - base;
+
+        // Test if we need more entries, and if so, read more.
+        if self.buf.len() - self.pos < size_of::<linux_dirent64>() {
+            match self.read_more()? {
+                Ok(()) => (),
+                Err(e) => return Some(Err(e)),
+            }
+        }
+
+        // We successfully read an entry. Extract the fields.
+        let pos = self.pos;
+
+        // Do an unaligned u16 load.
+        let d_reclen = u16::from_ne_bytes([
+            self.buf[pos + offsetof_d_reclen],
+            self.buf[pos + offsetof_d_reclen + 1],
+        ]);
+        assert!(self.buf.len() - pos >= d_reclen as usize);
+        self.pos += d_reclen as usize;
+
+        // Read the NUL-terminated name from the `d_name` field. Without
+        // `unsafe`, we need to scan for the NUL twice: once to obtain a size
+        // for the slice, and then once within `CStr::from_bytes_with_nul`.
+        let name_start = pos + offsetof_d_name;
+        let name_len = self.buf[name_start..]
+            .iter()
+            .position(|x| *x == b'\0')
+            .unwrap();
+        let name =
+            CStr::from_bytes_with_nul(&self.buf[name_start..name_start + name_len + 1]).unwrap();
+        let name = name.to_owned();
+        assert!(name.as_bytes().len() <= self.buf.len() - name_start);
+
+        // Do an unaligned u64 load.
+        let d_ino = u64::from_ne_bytes([
+            self.buf[pos + offsetof_d_ino],
+            self.buf[pos + offsetof_d_ino + 1],
+            self.buf[pos + offsetof_d_ino + 2],
+            self.buf[pos + offsetof_d_ino + 3],
+            self.buf[pos + offsetof_d_ino + 4],
+            self.buf[pos + offsetof_d_ino + 5],
+            self.buf[pos + offsetof_d_ino + 6],
+            self.buf[pos + offsetof_d_ino + 7],
+        ]);
+
+        let d_type = self.buf[pos + offsetof_d_type];
+
+        // Check that our types correspond to the `linux_dirent64` types.
+        let _ = linux_dirent64 {
+            d_ino,
+            d_off: 0,
+            d_type,
+            d_reclen,
+            d_name: Default::default(),
+        };
+
+        Some(Ok(DirEntry {
+            d_ino,
+            d_type,
+            name,
+        }))
+    }
+
+    fn read_more(&mut self) -> Option<io::Result<()>> {
+        // Capacity increment currently chosen by wild guess.
+        self.buf
+            .resize(self.buf.capacity() + 32 * size_of::<linux_dirent64>(), 0);
+        self.pos = 0;
+        let nread = match crate::imp::fs::syscalls::getdents(self.fd.as_fd(), &mut self.buf) {
+            Ok(nread) => nread,
+            Err(err) => return Some(Err(err)),
+        };
+        self.buf.resize(nread, 0);
+        if nread == 0 {
+            None
+        } else {
+            Some(Ok(()))
+        }
+    }
+
+    /// `fstat(self)`
+    #[inline]
+    pub fn stat(&self) -> io::Result<Stat> {
+        fstat(&self.fd)
+    }
+
+    /// `fstatfs(self)`
+    #[inline]
+    pub fn statfs(&self) -> io::Result<StatFs> {
+        fstatfs(&self.fd)
+    }
+
+    /// `fchdir(self)`
+    #[inline]
+    pub fn chdir(&self) -> io::Result<()> {
+        fchdir(&self.fd)
+    }
+}
+
+impl Iterator for Dir {
+    type Item = io::Result<DirEntry>;
+
+    #[inline]
+    fn next(&mut self) -> Option<Self::Item> {
+        Self::read(self)
+    }
+}
+
+impl fmt::Debug for Dir {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        f.debug_struct("Dir").field("fd", &self.fd).finish()
+    }
+}
+
+/// `struct dirent`
+#[derive(Debug)]
+pub struct DirEntry {
+    d_ino: u64,
+    d_type: u8,
+    name: CString,
+}
+
+impl DirEntry {
+    /// Returns the file name of this directory entry.
+    #[inline]
+    pub fn file_name(&self) -> &CStr {
+        &self.name
+    }
+
+    /// Returns the type of this directory entry.
+    #[inline]
+    pub fn file_type(&self) -> FileType {
+        FileType::from_dirent_d_type(self.d_type)
+    }
+
+    /// Return the inode number of this directory entry.
+    #[inline]
+    pub fn ino(&self) -> u64 {
+        self.d_ino
+    }
+}
diff --git a/vendor/rustix/src/imp/linux_raw/fs/makedev.rs b/vendor/rustix/src/imp/linux_raw/fs/makedev.rs
new file mode 100644
index 000000000..284ba2f10
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/fs/makedev.rs
@@ -0,0 +1,19 @@
+use crate::fs::Dev;
+
+#[inline]
+pub(crate) fn makedev(maj: u32, min: u32) -> Dev {
+    ((u64::from(maj) & 0xffff_f000_u64) << 32)
+        | ((u64::from(maj) & 0x0000_0fff_u64) << 8)
+        | ((u64::from(min) & 0xffff_ff00_u64) << 12)
+        | (u64::from(min) & 0x0000_00ff_u64)
+}
+
+#[inline]
+pub(crate) fn major(dev: Dev) -> u32 {
+    (((dev >> 31 >> 1) & 0xffff_f000) | ((dev >> 8) & 0x0000_0fff)) as u32
+}
+
+#[inline]
+pub(crate) fn minor(dev: Dev) -> u32 {
+    (((dev >> 12) & 0xffff_ff00) | (dev & 0x0000_00ff)) as u32
+}
diff --git a/vendor/rustix/src/imp/linux_raw/fs/mod.rs b/vendor/rustix/src/imp/linux_raw/fs/mod.rs
new file mode 100644
index 000000000..641e65744
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/fs/mod.rs
@@ -0,0 +1,5 @@
+#[cfg(any(feature = "fs", feature = "procfs"))]
+pub(crate) mod dir;
+pub(crate) mod makedev;
+pub(crate) mod syscalls;
+pub(crate) mod types;
diff --git a/vendor/rustix/src/imp/linux_raw/fs/syscalls.rs b/vendor/rustix/src/imp/linux_raw/fs/syscalls.rs
new file mode 100644
index 000000000..db1ecaaf6
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/fs/syscalls.rs
@@ -0,0 +1,1391 @@
+//! linux_raw syscalls supporting `rustix::fs`.
+//!
+//! # Safety
+//!
+//! See the `rustix::imp` module documentation for details.
+#![allow(unsafe_code)]
+#![allow(dead_code)]
+#![allow(clippy::undocumented_unsafe_blocks)]
+
+use super::super::c;
+use super::super::conv::{
+    by_ref, c_int, c_uint, dev_t, oflags_for_open_how, opt_mut, pass_usize, raw_fd, ret, ret_c_int,
+    ret_c_uint, ret_owned_fd, ret_usize, size_of, slice_mut, zero,
+};
+#[cfg(target_pointer_width = "64")]
+use super::super::conv::{loff_t, loff_t_from_u64, ret_u64};
+#[cfg(any(
+    target_arch = "aarch64",
+    target_arch = "riscv64",
+    target_arch = "mips64",
+    target_pointer_width = "32",
+))]
+use crate::fd::AsFd;
+use crate::fd::{BorrowedFd, RawFd};
+use crate::ffi::CStr;
+use crate::fs::{
+    Access, Advice, AtFlags, FallocateFlags, FdFlags, FileType, FlockOperation, MemfdFlags, Mode,
+    OFlags, RenameFlags, ResolveFlags, SealFlags, Stat, StatFs, StatxFlags, Timestamps,
+};
+use crate::io::{self, OwnedFd, SeekFrom};
+use crate::process::{Gid, Uid};
+use core::convert::TryInto;
+use core::mem::MaybeUninit;
+#[cfg(target_arch = "mips64")]
+use linux_raw_sys::general::stat as linux_stat64;
+use linux_raw_sys::general::{
+    __kernel_timespec, open_how, statx, AT_EACCESS, AT_FDCWD, AT_REMOVEDIR, AT_SYMLINK_NOFOLLOW,
+    F_ADD_SEALS, F_DUPFD, F_DUPFD_CLOEXEC, F_GETFD, F_GETFL, F_GETLEASE, F_GETOWN, F_GETPIPE_SZ,
+    F_GETSIG, F_GET_SEALS, F_SETFD, F_SETFL, F_SETPIPE_SZ, SEEK_CUR, SEEK_END, SEEK_SET,
+};
+#[cfg(target_pointer_width = "32")]
+use {
+    super::super::conv::{hi, lo, slice_just_addr},
+    linux_raw_sys::general::stat64 as linux_stat64,
+    linux_raw_sys::general::timespec as __kernel_old_timespec,
+};
+
+#[inline]
+pub(crate) fn open(filename: &CStr, flags: OFlags, mode: Mode) -> io::Result<OwnedFd> {
+    #[cfg(any(target_arch = "aarch64", target_arch = "riscv64"))]
+    {
+        openat(crate::fs::cwd().as_fd(), filename, flags, mode)
+    }
+    #[cfg(all(
+        target_pointer_width = "32",
+        not(any(target_arch = "aarch64", target_arch = "riscv64")),
+    ))]
+    unsafe {
+        ret_owned_fd(syscall_readonly!(__NR_open, filename, flags, mode))
+    }
+    #[cfg(all(
+        target_pointer_width = "64",
+        not(any(target_arch = "aarch64", target_arch = "riscv64")),
+    ))]
+    unsafe {
+        ret_owned_fd(syscall_readonly!(__NR_open, filename, flags, mode))
+    }
+}
+
+#[inline]
+pub(crate) fn openat(
+    dirfd: BorrowedFd<'_>,
+    filename: &CStr,
+    flags: OFlags,
+    mode: Mode,
+) -> io::Result<OwnedFd> {
+    #[cfg(target_pointer_width = "32")]
+    unsafe {
+        ret_owned_fd(syscall_readonly!(__NR_openat, dirfd, filename, flags, mode))
+    }
+    #[cfg(target_pointer_width = "64")]
+    unsafe {
+        ret_owned_fd(syscall_readonly!(__NR_openat, dirfd, filename, flags, mode))
+    }
+}
+
+#[inline]
+pub(crate) fn openat2(
+    dirfd: BorrowedFd<'_>,
+    pathname: &CStr,
+    flags: OFlags,
+    mode: Mode,
+    resolve: ResolveFlags,
+) -> io::Result<OwnedFd> {
+    #[cfg(target_pointer_width = "32")]
+    unsafe {
+        ret_owned_fd(syscall_readonly!(
+            __NR_openat2,
+            dirfd,
+            pathname,
+            by_ref(&open_how {
+                flags: oflags_for_open_how(flags),
+                mode: u64::from(mode.bits()),
+                resolve: resolve.bits(),
+            }),
+            size_of::<open_how, _>()
+        ))
+    }
+    #[cfg(target_pointer_width = "64")]
+    unsafe {
+        ret_owned_fd(syscall_readonly!(
+            __NR_openat2,
+            dirfd,
+            pathname,
+            by_ref(&open_how {
+                flags: oflags_for_open_how(flags),
+                mode: u64::from(mode.bits()),
+                resolve: resolve.bits(),
+            }),
+            size_of::<open_how, _>()
+        ))
+    }
+}
+
+#[inline]
+pub(crate) fn chmod(filename: &CStr, mode: Mode) -> io::Result<()> {
+    unsafe {
+        ret(syscall_readonly!(
+            __NR_fchmodat,
+            raw_fd(AT_FDCWD),
+            filename,
+            mode
+        ))
+    }
+}
+
+#[inline]
+pub(crate) fn chmodat(dirfd: BorrowedFd<'_>, filename: &CStr, mode: Mode) -> io::Result<()> {
+    unsafe { ret(syscall_readonly!(__NR_fchmodat, dirfd, filename, mode)) }
+}
+
+#[inline]
+pub(crate) fn fchmod(fd: BorrowedFd<'_>, mode: Mode) -> io::Result<()> {
+    unsafe { ret(syscall_readonly!(__NR_fchmod, fd, mode)) }
+}
+
+#[inline]
+pub(crate) fn chownat(
+    dirfd: BorrowedFd<'_>,
+    filename: &CStr,
+    owner: Option<Uid>,
+    group: Option<Gid>,
+    flags: AtFlags,
+) -> io::Result<()> {
+    unsafe {
+        let (ow, gr) = crate::process::translate_fchown_args(owner, group);
+        ret(syscall_readonly!(
+            __NR_fchownat,
+            dirfd,
+            filename,
+            c_uint(ow),
+            c_uint(gr),
+            flags
+        ))
+    }
+}
+
+#[inline]
+pub(crate) fn fchown(fd: BorrowedFd<'_>, owner: Option<Uid>, group: Option<Gid>) -> io::Result<()> {
+    unsafe {
+        let (ow, gr) = crate::process::translate_fchown_args(owner, group);
+        ret(syscall_readonly!(__NR_fchown, fd, c_uint(ow), c_uint(gr)))
+    }
+}
+
+#[inline]
+pub(crate) fn mknodat(
+    dirfd: BorrowedFd<'_>,
+    filename: &CStr,
+    file_type: FileType,
+    mode: Mode,
+    dev: u64,
+) -> io::Result<()> {
+    #[cfg(target_pointer_width = "32")]
+    unsafe {
+        ret(syscall_readonly!(
+            __NR_mknodat,
+            dirfd,
+            filename,
+            (mode, file_type),
+            dev_t(dev)?
+        ))
+    }
+    #[cfg(target_pointer_width = "64")]
+    unsafe {
+        ret(syscall_readonly!(
+            __NR_mknodat,
+            dirfd,
+            filename,
+            (mode, file_type),
+            dev_t(dev)
+        ))
+    }
+}
+
+#[inline]
+pub(crate) fn seek(fd: BorrowedFd<'_>, pos: SeekFrom) -> io::Result<u64> {
+    let (whence, offset) = match pos {
+        SeekFrom::Start(pos) => {
+            let pos: u64 = pos;
+            // Silently cast; we'll get `EINVAL` if the value is negative.
+            (SEEK_SET, pos as i64)
+        }
+        SeekFrom::End(offset) => (SEEK_END, offset),
+        SeekFrom::Current(offset) => (SEEK_CUR, offset),
+    };
+    _seek(fd, offset, whence)
+}
+
+#[inline]
+pub(crate) fn _seek(fd: BorrowedFd<'_>, offset: i64, whence: c::c_uint) -> io::Result<u64> {
+    #[cfg(target_pointer_width = "32")]
+    unsafe {
+        let mut result = MaybeUninit::<u64>::uninit();
+        ret(syscall!(
+            __NR__llseek,
+            fd,
+            // Don't use the hi/lo functions here because Linux's llseek
+            // takes its 64-bit argument differently from everything else.
+            pass_usize((offset >> 32) as usize),
+            pass_usize(offset as usize),
+            &mut result,
+            c_uint(whence)
+        ))
+        .map(|()| result.assume_init())
+    }
+    #[cfg(target_pointer_width = "64")]
+    unsafe {
+        ret_u64(syscall_readonly!(
+            __NR_lseek,
+            fd,
+            loff_t(offset),
+            c_uint(whence)
+        ))
+    }
+}
+
+#[inline]
+pub(crate) fn tell(fd: BorrowedFd<'_>) -> io::Result<u64> {
+    _seek(fd, 0, SEEK_CUR).map(|x| x as u64)
+}
+
+#[inline]
+pub(crate) fn ftruncate(fd: BorrowedFd<'_>, length: u64) -> io::Result<()> {
+    // <https://github.com/torvalds/linux/blob/fcadab740480e0e0e9fa9bd272acd409884d431a/arch/arm64/kernel/sys32.c#L81-L83>
+    #[cfg(all(
+        target_pointer_width = "32",
+        any(target_arch = "arm", target_arch = "mips", target_arch = "powerpc"),
+    ))]
+    unsafe {
+        ret(syscall_readonly!(
+            __NR_ftruncate64,
+            fd,
+            zero(),
+            hi(length),
+            lo(length)
+        ))
+    }
+    #[cfg(all(
+        target_pointer_width = "32",
+        not(any(target_arch = "arm", target_arch = "mips", target_arch = "powerpc")),
+    ))]
+    unsafe {
+        ret(syscall_readonly!(
+            __NR_ftruncate64,
+            fd,
+            hi(length),
+            lo(length)
+        ))
+    }
+    #[cfg(target_pointer_width = "64")]
+    unsafe {
+        ret(syscall_readonly!(
+            __NR_ftruncate,
+            fd,
+            loff_t_from_u64(length)
+        ))
+    }
+}
+
+#[inline]
+pub(crate) fn fallocate(
+    fd: BorrowedFd<'_>,
+    mode: FallocateFlags,
+    offset: u64,
+    len: u64,
+) -> io::Result<()> {
+    #[cfg(target_pointer_width = "32")]
+    unsafe {
+        ret(syscall_readonly!(
+            __NR_fallocate,
+            fd,
+            mode,
+            hi(offset),
+            lo(offset),
+            hi(len),
+            lo(len)
+        ))
+    }
+    #[cfg(target_pointer_width = "64")]
+    unsafe {
+        ret(syscall_readonly!(
+            __NR_fallocate,
+            fd,
+            mode,
+            loff_t_from_u64(offset),
+            loff_t_from_u64(len)
+        ))
+    }
+}
+
+#[inline]
+pub(crate) fn fadvise(fd: BorrowedFd<'_>, pos: u64, len: u64, advice: Advice) -> io::Result<()> {
+    // On ARM, the arguments are reordered so that the len and pos argument
+    // pairs are aligned. And ARM has a custom syscall code for this.
+    #[cfg(target_arch = "arm")]
+    unsafe {
+        ret(syscall_readonly!(
+            __NR_arm_fadvise64_64,
+            fd,
+            advice,
+            hi(pos),
+            lo(pos),
+            hi(len),
+            lo(len)
+        ))
+    }
+
+    // On powerpc, the arguments are reordered as on ARM.
+    #[cfg(target_arch = "powerpc")]
+    unsafe {
+        ret(syscall_readonly!(
+            __NR_fadvise64_64,
+            fd,
+            advice,
+            hi(pos),
+            lo(pos),
+            hi(len),
+            lo(len)
+        ))
+    }
+    // On mips, the arguments are not reordered, and padding is inserted
+    // instead to ensure alignment.
+    #[cfg(target_arch = "mips")]
+    unsafe {
+        ret(syscall_readonly!(
+            __NR_fadvise64,
+            fd,
+            zero(),
+            hi(pos),
+            lo(pos),
+            hi(len),
+            lo(len),
+            advice
+        ))
+    }
+    #[cfg(all(
+        target_pointer_width = "32",
+        not(any(target_arch = "arm", target_arch = "mips", target_arch = "powerpc")),
+    ))]
+    unsafe {
+        ret(syscall_readonly!(
+            __NR_fadvise64_64,
+            fd,
+            hi(pos),
+            lo(pos),
+            hi(len),
+            lo(len),
+            advice
+        ))
+    }
+    #[cfg(target_pointer_width = "64")]
+    unsafe {
+        ret(syscall_readonly!(
+            __NR_fadvise64,
+            fd,
+            loff_t_from_u64(pos),
+            loff_t_from_u64(len),
+            advice
+        ))
+    }
+}
+
+#[inline]
+pub(crate) fn fsync(fd: BorrowedFd<'_>) -> io::Result<()> {
+    unsafe { ret(syscall_readonly!(__NR_fsync, fd)) }
+}
+
+#[inline]
+pub(crate) fn fdatasync(fd: BorrowedFd<'_>) -> io::Result<()> {
+    unsafe { ret(syscall_readonly!(__NR_fdatasync, fd)) }
+}
+
+#[inline]
+pub(crate) fn flock(fd: BorrowedFd<'_>, operation: FlockOperation) -> io::Result<()> {
+    unsafe { ret(syscall!(__NR_flock, fd, c_uint(operation as c::c_uint))) }
+}
+
+#[inline]
+pub(crate) fn fstat(fd: BorrowedFd<'_>) -> io::Result<Stat> {
+    #[cfg(any(target_pointer_width = "32", target_arch = "mips64"))]
+    {
+        match statx(fd, cstr!(""), AtFlags::EMPTY_PATH, StatxFlags::BASIC_STATS) {
+            Ok(x) => statx_to_stat(x),
+            Err(io::Errno::NOSYS) => fstat_old(fd),
+            Err(e) => Err(e),
+        }
+    }
+
+    #[cfg(all(target_pointer_width = "64", not(target_arch = "mips64")))]
+    unsafe {
+        let mut result = MaybeUninit::<Stat>::uninit();
+        ret(syscall!(__NR_fstat, fd, &mut result)).map(|()| result.assume_init())
+    }
+}
+
+#[cfg(any(target_pointer_width = "32", target_arch = "mips64"))]
+fn fstat_old(fd: BorrowedFd<'_>) -> io::Result<Stat> {
+    let mut result = MaybeUninit::<linux_stat64>::uninit();
+
+    #[cfg(target_arch = "mips64")]
+    unsafe {
+        ret(syscall!(__NR_fstat, fd, &mut result))?;
+        stat_to_stat(result.assume_init())
+    }
+
+    #[cfg(target_pointer_width = "32")]
+    unsafe {
+        ret(syscall!(__NR_fstat64, fd, &mut result))?;
+        stat_to_stat(result.assume_init())
+    }
+}
+
+#[inline]
+pub(crate) fn stat(filename: &CStr) -> io::Result<Stat> {
+    #[cfg(any(target_pointer_width = "32", target_arch = "mips64"))]
+    {
+        match statx(
+            crate::fs::cwd().as_fd(),
+            filename,
+            AtFlags::empty(),
+            StatxFlags::BASIC_STATS,
+        ) {
+            Ok(x) => return statx_to_stat(x),
+            Err(io::Errno::NOSYS) => stat_old(filename),
+            Err(e) => return Err(e),
+        }
+    }
+
+    #[cfg(all(target_pointer_width = "64", not(target_arch = "mips64")))]
+    unsafe {
+        let mut result = MaybeUninit::<Stat>::uninit();
+        ret(syscall!(
+            __NR_newfstatat,
+            raw_fd(AT_FDCWD),
+            filename,
+            &mut result,
+            c_uint(0)
+        ))
+        .map(|()| result.assume_init())
+    }
+}
+
+#[cfg(any(target_pointer_width = "32", target_arch = "mips64"))]
+fn stat_old(filename: &CStr) -> io::Result<Stat> {
+    let mut result = MaybeUninit::<linux_stat64>::uninit();
+
+    #[cfg(target_arch = "mips64")]
+    unsafe {
+        ret(syscall!(
+            __NR_newfstatat,
+            raw_fd(AT_FDCWD),
+            filename,
+            &mut result,
+            c_uint(0)
+        ))?;
+        stat_to_stat(result.assume_init())
+    }
+
+    #[cfg(target_pointer_width = "32")]
+    unsafe {
+        ret(syscall!(
+            __NR_fstatat64,
+            raw_fd(AT_FDCWD),
+            filename,
+            &mut result,
+            c_uint(0)
+        ))?;
+        stat_to_stat(result.assume_init())
+    }
+}
+
+#[inline]
+pub(crate) fn statat(dirfd: BorrowedFd<'_>, filename: &CStr, flags: AtFlags) -> io::Result<Stat> {
+    #[cfg(any(target_pointer_width = "32", target_arch = "mips64"))]
+    {
+        match statx(dirfd, filename, flags, StatxFlags::BASIC_STATS) {
+            Ok(x) => return statx_to_stat(x),
+            Err(io::Errno::NOSYS) => statat_old(dirfd, filename, flags),
+            Err(e) => return Err(e),
+        }
+    }
+
+    #[cfg(all(target_pointer_width = "64", not(target_arch = "mips64")))]
+    unsafe {
+        let mut result = MaybeUninit::<Stat>::uninit();
+        ret(syscall!(
+            __NR_newfstatat,
+            dirfd,
+            filename,
+            &mut result,
+            flags
+        ))
+        .map(|()| result.assume_init())
+    }
+}
+
+#[cfg(any(target_pointer_width = "32", target_arch = "mips64"))]
+fn statat_old(dirfd: BorrowedFd<'_>, filename: &CStr, flags: AtFlags) -> io::Result<Stat> {
+    let mut result = MaybeUninit::<linux_stat64>::uninit();
+
+    #[cfg(target_arch = "mips64")]
+    unsafe {
+        ret(syscall!(
+            __NR_newfstatat,
+            dirfd,
+            filename,
+            &mut result,
+            flags
+        ))?;
+        stat_to_stat(result.assume_init())
+    }
+
+    #[cfg(target_pointer_width = "32")]
+    unsafe {
+        ret(syscall!(
+            __NR_fstatat64,
+            dirfd,
+            filename,
+            &mut result,
+            flags
+        ))?;
+        stat_to_stat(result.assume_init())
+    }
+}
+
+#[inline]
+pub(crate) fn lstat(filename: &CStr) -> io::Result<Stat> {
+    #[cfg(any(target_pointer_width = "32", target_arch = "mips64"))]
+    {
+        match statx(
+            crate::fs::cwd().as_fd(),
+            filename,
+            AtFlags::SYMLINK_NOFOLLOW,
+            StatxFlags::BASIC_STATS,
+        ) {
+            Ok(x) => return statx_to_stat(x),
+            Err(io::Errno::NOSYS) => lstat_old(filename),
+            Err(e) => return Err(e),
+        }
+    }
+
+    #[cfg(all(target_pointer_width = "64", not(target_arch = "mips64")))]
+    unsafe {
+        let mut result = MaybeUninit::<Stat>::uninit();
+        ret(syscall!(
+            __NR_newfstatat,
+            raw_fd(AT_FDCWD),
+            filename,
+            &mut result,
+            c_uint(AT_SYMLINK_NOFOLLOW)
+        ))
+        .map(|()| result.assume_init())
+    }
+}
+
+#[cfg(any(target_pointer_width = "32", target_arch = "mips64"))]
+fn lstat_old(filename: &CStr) -> io::Result<Stat> {
+    let mut result = MaybeUninit::<linux_stat64>::uninit();
+
+    #[cfg(target_arch = "mips64")]
+    unsafe {
+        ret(syscall!(
+            __NR_newfstatat,
+            raw_fd(AT_FDCWD),
+            filename,
+            &mut result,
+            c_uint(AT_SYMLINK_NOFOLLOW)
+        ))?;
+        stat_to_stat(result.assume_init())
+    }
+
+    #[cfg(target_pointer_width = "32")]
+    unsafe {
+        ret(syscall!(
+            __NR_fstatat64,
+            raw_fd(AT_FDCWD),
+            filename,
+            &mut result,
+            c_uint(AT_SYMLINK_NOFOLLOW)
+        ))?;
+        stat_to_stat(result.assume_init())
+    }
+}
+
+/// Convert from a Linux `statx` value to rustix's `Stat`.
+#[cfg(any(target_pointer_width = "32", target_arch = "mips64"))]
+fn statx_to_stat(x: crate::fs::Statx) -> io::Result<Stat> {
+    Ok(Stat {
+        st_dev: crate::fs::makedev(x.stx_dev_major, x.stx_dev_minor),
+        st_mode: x.stx_mode.into(),
+        st_nlink: x.stx_nlink.into(),
+        st_uid: x.stx_uid.into(),
+        st_gid: x.stx_gid.into(),
+        st_rdev: crate::fs::makedev(x.stx_rdev_major, x.stx_rdev_minor),
+        st_size: x.stx_size.try_into().map_err(|_| io::Errno::OVERFLOW)?,
+        st_blksize: x.stx_blksize.into(),
+        st_blocks: x.stx_blocks.into(),
+        st_atime: x
+            .stx_atime
+            .tv_sec
+            .try_into()
+            .map_err(|_| io::Errno::OVERFLOW)?,
+        st_atime_nsec: x.stx_atime.tv_nsec.into(),
+        st_mtime: x
+            .stx_mtime
+            .tv_sec
+            .try_into()
+            .map_err(|_| io::Errno::OVERFLOW)?,
+        st_mtime_nsec: x.stx_mtime.tv_nsec.into(),
+        st_ctime: x
+            .stx_ctime
+            .tv_sec
+            .try_into()
+            .map_err(|_| io::Errno::OVERFLOW)?,
+        st_ctime_nsec: x.stx_ctime.tv_nsec.into(),
+        st_ino: x.stx_ino.into(),
+    })
+}
+
+/// Convert from a Linux `stat64` value to rustix's `Stat`.
+#[cfg(target_pointer_width = "32")]
+fn stat_to_stat(s64: linux_raw_sys::general::stat64) -> io::Result<Stat> {
+    Ok(Stat {
+        st_dev: s64.st_dev.try_into().map_err(|_| io::Errno::OVERFLOW)?,
+        st_mode: s64.st_mode.try_into().map_err(|_| io::Errno::OVERFLOW)?,
+        st_nlink: s64.st_nlink.try_into().map_err(|_| io::Errno::OVERFLOW)?,
+        st_uid: s64.st_uid.try_into().map_err(|_| io::Errno::OVERFLOW)?,
+        st_gid: s64.st_gid.try_into().map_err(|_| io::Errno::OVERFLOW)?,
+        st_rdev: s64.st_rdev.try_into().map_err(|_| io::Errno::OVERFLOW)?,
+        st_size: s64.st_size.try_into().map_err(|_| io::Errno::OVERFLOW)?,
+        st_blksize: s64.st_blksize.try_into().map_err(|_| io::Errno::OVERFLOW)?,
+        st_blocks: s64.st_blocks.try_into().map_err(|_| io::Errno::OVERFLOW)?,
+        st_atime: s64.st_atime.try_into().map_err(|_| io::Errno::OVERFLOW)?,
+        st_atime_nsec: s64
+            .st_atime_nsec
+            .try_into()
+            .map_err(|_| io::Errno::OVERFLOW)?,
+        st_mtime: s64.st_mtime.try_into().map_err(|_| io::Errno::OVERFLOW)?,
+        st_mtime_nsec: s64
+            .st_mtime_nsec
+            .try_into()
+            .map_err(|_| io::Errno::OVERFLOW)?,
+        st_ctime: s64.st_ctime.try_into().map_err(|_| io::Errno::OVERFLOW)?,
+        st_ctime_nsec: s64
+            .st_ctime_nsec
+            .try_into()
+            .map_err(|_| io::Errno::OVERFLOW)?,
+        st_ino: s64.st_ino.try_into().map_err(|_| io::Errno::OVERFLOW)?,
+    })
+}
+
+/// Convert from a Linux `stat` value to rustix's `Stat`.
+#[cfg(target_arch = "mips64")]
+fn stat_to_stat(s: linux_raw_sys::general::stat) -> io::Result<Stat> {
+    Ok(Stat {
+        st_dev: s.st_dev.try_into().map_err(|_| io::Errno::OVERFLOW)?,
+        st_mode: s.st_mode.try_into().map_err(|_| io::Errno::OVERFLOW)?,
+        st_nlink: s.st_nlink.try_into().map_err(|_| io::Errno::OVERFLOW)?,
+        st_uid: s.st_uid.try_into().map_err(|_| io::Errno::OVERFLOW)?,
+        st_gid: s.st_gid.try_into().map_err(|_| io::Errno::OVERFLOW)?,
+        st_rdev: s.st_rdev.try_into().map_err(|_| io::Errno::OVERFLOW)?,
+        st_size: s.st_size.try_into().map_err(|_| io::Errno::OVERFLOW)?,
+        st_blksize: s.st_blksize.try_into().map_err(|_| io::Errno::OVERFLOW)?,
+        st_blocks: s.st_blocks.try_into().map_err(|_| io::Errno::OVERFLOW)?,
+        st_atime: s.st_atime.try_into().map_err(|_| io::Errno::OVERFLOW)?,
+        st_atime_nsec: s
+            .st_atime_nsec
+            .try_into()
+            .map_err(|_| io::Errno::OVERFLOW)?,
+        st_mtime: s.st_mtime.try_into().map_err(|_| io::Errno::OVERFLOW)?,
+        st_mtime_nsec: s
+            .st_mtime_nsec
+            .try_into()
+            .map_err(|_| io::Errno::OVERFLOW)?,
+        st_ctime: s.st_ctime.try_into().map_err(|_| io::Errno::OVERFLOW)?,
+        st_ctime_nsec: s
+            .st_ctime_nsec
+            .try_into()
+            .map_err(|_| io::Errno::OVERFLOW)?,
+        st_ino: s.st_ino.try_into().map_err(|_| io::Errno::OVERFLOW)?,
+    })
+}
+
+#[inline]
+pub(crate) fn statx(
+    dirfd: BorrowedFd<'_>,
+    pathname: &CStr,
+    flags: AtFlags,
+    mask: StatxFlags,
+) -> io::Result<statx> {
+    unsafe {
+        let mut statx_buf = MaybeUninit::<statx>::uninit();
+        ret(syscall!(
+            __NR_statx,
+            dirfd,
+            pathname,
+            flags,
+            mask,
+            &mut statx_buf
+        ))
+        .map(|()| statx_buf.assume_init())
+    }
+}
+
+#[inline]
+pub(crate) fn is_statx_available() -> bool {
+    unsafe {
+        // Call `statx` with null pointers so that if it fails for any reason
+        // other than `EFAULT`, we know it's not supported.
+        matches!(
+            ret(syscall!(
+                __NR_statx,
+                raw_fd(AT_FDCWD),
+                zero(),
+                zero(),
+                zero(),
+                zero()
+            )),
+            Err(io::Errno::FAULT)
+        )
+    }
+}
+
+#[inline]
+pub(crate) fn fstatfs(fd: BorrowedFd<'_>) -> io::Result<StatFs> {
+    #[cfg(target_pointer_width = "32")]
+    unsafe {
+        let mut result = MaybeUninit::<StatFs>::uninit();
+        ret(syscall!(
+            __NR_fstatfs64,
+            fd,
+            size_of::<StatFs, _>(),
+            &mut result
+        ))
+        .map(|()| result.assume_init())
+    }
+
+    #[cfg(target_pointer_width = "64")]
+    unsafe {
+        let mut result = MaybeUninit::<StatFs>::uninit();
+        ret(syscall!(__NR_fstatfs, fd, &mut result)).map(|()| result.assume_init())
+    }
+}
+
+#[inline]
+pub(crate) fn statfs(filename: &CStr) -> io::Result<StatFs> {
+    #[cfg(target_pointer_width = "32")]
+    unsafe {
+        let mut result = MaybeUninit::<StatFs>::uninit();
+        ret(syscall!(
+            __NR_statfs64,
+            filename,
+            size_of::<StatFs, _>(),
+            &mut result
+        ))
+        .map(|()| result.assume_init())
+    }
+    #[cfg(target_pointer_width = "64")]
+    unsafe {
+        let mut result = MaybeUninit::<StatFs>::uninit();
+        ret(syscall!(__NR_statfs, filename, &mut result)).map(|()| result.assume_init())
+    }
+}
+
+#[inline]
+pub(crate) fn readlink(path: &CStr, buf: &mut [u8]) -> io::Result<usize> {
+    let (buf_addr_mut, buf_len) = slice_mut(buf);
+    unsafe {
+        ret_usize(syscall!(
+            __NR_readlinkat,
+            raw_fd(AT_FDCWD),
+            path,
+            buf_addr_mut,
+            buf_len
+        ))
+    }
+}
+
+#[inline]
+pub(crate) fn readlinkat(dirfd: BorrowedFd<'_>, path: &CStr, buf: &mut [u8]) -> io::Result<usize> {
+    let (buf_addr_mut, buf_len) = slice_mut(buf);
+    unsafe {
+        ret_usize(syscall!(
+            __NR_readlinkat,
+            dirfd,
+            path,
+            buf_addr_mut,
+            buf_len
+        ))
+    }
+}
+
+#[inline]
+pub(crate) fn fcntl_dupfd(fd: BorrowedFd<'_>, min: RawFd) -> io::Result<OwnedFd> {
+    #[cfg(target_pointer_width = "32")]
+    unsafe {
+        ret_owned_fd(syscall_readonly!(
+            __NR_fcntl64,
+            fd,
+            c_uint(F_DUPFD),
+            raw_fd(min)
+        ))
+    }
+    #[cfg(target_pointer_width = "64")]
+    unsafe {
+        ret_owned_fd(syscall_readonly!(
+            __NR_fcntl,
+            fd,
+            c_uint(F_DUPFD),
+            raw_fd(min)
+        ))
+    }
+}
+
+#[inline]
+pub(crate) fn fcntl_dupfd_cloexec(fd: BorrowedFd<'_>, min: RawFd) -> io::Result<OwnedFd> {
+    #[cfg(target_pointer_width = "32")]
+    unsafe {
+        ret_owned_fd(syscall_readonly!(
+            __NR_fcntl64,
+            fd,
+            c_uint(F_DUPFD_CLOEXEC),
+            raw_fd(min)
+        ))
+    }
+    #[cfg(target_pointer_width = "64")]
+    unsafe {
+        ret_owned_fd(syscall_readonly!(
+            __NR_fcntl,
+            fd,
+            c_uint(F_DUPFD_CLOEXEC),
+            raw_fd(min)
+        ))
+    }
+}
+
+#[inline]
+pub(crate) fn fcntl_getfd(fd: BorrowedFd<'_>) -> io::Result<FdFlags> {
+    #[cfg(target_pointer_width = "32")]
+    unsafe {
+        ret_c_uint(syscall_readonly!(__NR_fcntl64, fd, c_uint(F_GETFD)))
+            .map(FdFlags::from_bits_truncate)
+    }
+    #[cfg(target_pointer_width = "64")]
+    unsafe {
+        ret_c_uint(syscall_readonly!(__NR_fcntl, fd, c_uint(F_GETFD)))
+            .map(FdFlags::from_bits_truncate)
+    }
+}
+
+#[inline]
+pub(crate) fn fcntl_setfd(fd: BorrowedFd<'_>, flags: FdFlags) -> io::Result<()> {
+    #[cfg(target_pointer_width = "32")]
+    unsafe {
+        ret(syscall_readonly!(__NR_fcntl64, fd, c_uint(F_SETFD), flags))
+    }
+    #[cfg(target_pointer_width = "64")]
+    unsafe {
+        ret(syscall_readonly!(__NR_fcntl, fd, c_uint(F_SETFD), flags))
+    }
+}
+
+#[inline]
+pub(crate) fn fcntl_getfl(fd: BorrowedFd<'_>) -> io::Result<OFlags> {
+    #[cfg(target_pointer_width = "32")]
+    unsafe {
+        ret_c_uint(syscall_readonly!(__NR_fcntl64, fd, c_uint(F_GETFL)))
+            .map(OFlags::from_bits_truncate)
+    }
+    #[cfg(target_pointer_width = "64")]
+    unsafe {
+        ret_c_uint(syscall_readonly!(__NR_fcntl, fd, c_uint(F_GETFL)))
+            .map(OFlags::from_bits_truncate)
+    }
+}
+
+#[inline]
+pub(crate) fn fcntl_setfl(fd: BorrowedFd<'_>, flags: OFlags) -> io::Result<()> {
+    #[cfg(target_pointer_width = "32")]
+    unsafe {
+        ret(syscall_readonly!(__NR_fcntl64, fd, c_uint(F_SETFL), flags))
+    }
+    #[cfg(target_pointer_width = "64")]
+    unsafe {
+        ret(syscall_readonly!(__NR_fcntl, fd, c_uint(F_SETFL), flags))
+    }
+}
+
+#[inline]
+pub(crate) fn fcntl_getlease(fd: BorrowedFd<'_>) -> io::Result<c::c_int> {
+    #[cfg(target_pointer_width = "32")]
+    unsafe {
+        ret_c_int(syscall_readonly!(__NR_fcntl64, fd, c_uint(F_GETLEASE)))
+    }
+    #[cfg(target_pointer_width = "64")]
+    unsafe {
+        ret_c_int(syscall_readonly!(__NR_fcntl, fd, c_uint(F_GETLEASE)))
+    }
+}
+
+#[inline]
+pub(crate) fn fcntl_getown(fd: BorrowedFd<'_>) -> io::Result<c::c_int> {
+    #[cfg(target_pointer_width = "32")]
+    unsafe {
+        ret_c_int(syscall_readonly!(__NR_fcntl64, fd, c_uint(F_GETOWN)))
+    }
+    #[cfg(target_pointer_width = "64")]
+    unsafe {
+        ret_c_int(syscall_readonly!(__NR_fcntl, fd, c_uint(F_GETOWN)))
+    }
+}
+
+#[inline]
+pub(crate) fn fcntl_getsig(fd: BorrowedFd<'_>) -> io::Result<c::c_int> {
+    #[cfg(target_pointer_width = "32")]
+    unsafe {
+        ret_c_int(syscall_readonly!(__NR_fcntl64, fd, c_uint(F_GETSIG)))
+    }
+    #[cfg(target_pointer_width = "64")]
+    unsafe {
+        ret_c_int(syscall_readonly!(__NR_fcntl, fd, c_uint(F_GETSIG)))
+    }
+}
+
+#[inline]
+pub(crate) fn fcntl_getpipe_sz(fd: BorrowedFd<'_>) -> io::Result<usize> {
+    #[cfg(target_pointer_width = "32")]
+    unsafe {
+        ret_usize(syscall_readonly!(__NR_fcntl64, fd, c_uint(F_GETPIPE_SZ)))
+    }
+    #[cfg(target_pointer_width = "64")]
+    unsafe {
+        ret_usize(syscall_readonly!(__NR_fcntl, fd, c_uint(F_GETPIPE_SZ)))
+    }
+}
+
+#[inline]
+pub(crate) fn fcntl_setpipe_sz(fd: BorrowedFd<'_>, size: c::c_int) -> io::Result<usize> {
+    #[cfg(target_pointer_width = "32")]
+    unsafe {
+        ret_usize(syscall_readonly!(
+            __NR_fcntl64,
+            fd,
+            c_uint(F_SETPIPE_SZ),
+            c_int(size)
+        ))
+    }
+    #[cfg(target_pointer_width = "64")]
+    unsafe {
+        ret_usize(syscall_readonly!(
+            __NR_fcntl,
+            fd,
+            c_uint(F_SETPIPE_SZ),
+            c_int(size)
+        ))
+    }
+}
+
+#[inline]
+pub(crate) fn fcntl_get_seals(fd: BorrowedFd<'_>) -> io::Result<SealFlags> {
+    #[cfg(target_pointer_width = "32")]
+    unsafe {
+        ret_c_int(syscall_readonly!(__NR_fcntl64, fd, c_uint(F_GET_SEALS)))
+            .map(|seals| SealFlags::from_bits_unchecked(seals as u32))
+    }
+    #[cfg(target_pointer_width = "64")]
+    unsafe {
+        ret_c_int(syscall_readonly!(__NR_fcntl, fd, c_uint(F_GET_SEALS)))
+            .map(|seals| SealFlags::from_bits_unchecked(seals as u32))
+    }
+}
+
+#[inline]
+pub(crate) fn fcntl_add_seals(fd: BorrowedFd<'_>, seals: SealFlags) -> io::Result<()> {
+    #[cfg(target_pointer_width = "32")]
+    unsafe {
+        ret(syscall_readonly!(
+            __NR_fcntl64,
+            fd,
+            c_uint(F_ADD_SEALS),
+            seals
+        ))
+    }
+    #[cfg(target_pointer_width = "64")]
+    unsafe {
+        ret(syscall_readonly!(
+            __NR_fcntl,
+            fd,
+            c_uint(F_ADD_SEALS),
+            seals
+        ))
+    }
+}
+
+#[inline]
+pub(crate) fn rename(oldname: &CStr, newname: &CStr) -> io::Result<()> {
+    #[cfg(target_arch = "riscv64")]
+    unsafe {
+        ret(syscall_readonly!(
+            __NR_renameat2,
+            raw_fd(AT_FDCWD),
+            oldname,
+            raw_fd(AT_FDCWD),
+            newname,
+            c_uint(0)
+        ))
+    }
+    #[cfg(not(target_arch = "riscv64"))]
+    unsafe {
+        ret(syscall_readonly!(
+            __NR_renameat,
+            raw_fd(AT_FDCWD),
+            oldname,
+            raw_fd(AT_FDCWD),
+            newname
+        ))
+    }
+}
+
+#[inline]
+pub(crate) fn renameat(
+    old_dirfd: BorrowedFd<'_>,
+    oldname: &CStr,
+    new_dirfd: BorrowedFd<'_>,
+    newname: &CStr,
+) -> io::Result<()> {
+    #[cfg(target_arch = "riscv64")]
+    unsafe {
+        ret(syscall_readonly!(
+            __NR_renameat2,
+            old_dirfd,
+            oldname,
+            new_dirfd,
+            newname,
+            c_uint(0)
+        ))
+    }
+    #[cfg(not(target_arch = "riscv64"))]
+    unsafe {
+        ret(syscall_readonly!(
+            __NR_renameat,
+            old_dirfd,
+            oldname,
+            new_dirfd,
+            newname
+        ))
+    }
+}
+
+#[inline]
+pub(crate) fn renameat2(
+    old_dirfd: BorrowedFd<'_>,
+    oldname: &CStr,
+    new_dirfd: BorrowedFd<'_>,
+    newname: &CStr,
+    flags: RenameFlags,
+) -> io::Result<()> {
+    unsafe {
+        ret(syscall_readonly!(
+            __NR_renameat2,
+            old_dirfd,
+            oldname,
+            new_dirfd,
+            newname,
+            flags
+        ))
+    }
+}
+
+#[inline]
+pub(crate) fn unlink(pathname: &CStr) -> io::Result<()> {
+    unsafe {
+        ret(syscall_readonly!(
+            __NR_unlinkat,
+            raw_fd(AT_FDCWD),
+            pathname,
+            c_uint(0)
+        ))
+    }
+}
+
+#[inline]
+pub(crate) fn unlinkat(dirfd: BorrowedFd<'_>, pathname: &CStr, flags: AtFlags) -> io::Result<()> {
+    unsafe { ret(syscall_readonly!(__NR_unlinkat, dirfd, pathname, flags)) }
+}
+
+#[inline]
+pub(crate) fn rmdir(pathname: &CStr) -> io::Result<()> {
+    unsafe {
+        ret(syscall_readonly!(
+            __NR_unlinkat,
+            raw_fd(AT_FDCWD),
+            pathname,
+            c_uint(AT_REMOVEDIR)
+        ))
+    }
+}
+
+#[inline]
+pub(crate) fn link(oldname: &CStr, newname: &CStr) -> io::Result<()> {
+    unsafe {
+        ret(syscall_readonly!(
+            __NR_linkat,
+            raw_fd(AT_FDCWD),
+            oldname,
+            raw_fd(AT_FDCWD),
+            newname,
+            c_uint(0)
+        ))
+    }
+}
+
+#[inline]
+pub(crate) fn linkat(
+    old_dirfd: BorrowedFd<'_>,
+    oldname: &CStr,
+    new_dirfd: BorrowedFd<'_>,
+    newname: &CStr,
+    flags: AtFlags,
+) -> io::Result<()> {
+    unsafe {
+        ret(syscall_readonly!(
+            __NR_linkat,
+            old_dirfd,
+            oldname,
+            new_dirfd,
+            newname,
+            flags
+        ))
+    }
+}
+
+#[inline]
+pub(crate) fn symlink(oldname: &CStr, newname: &CStr) -> io::Result<()> {
+    unsafe {
+        ret(syscall_readonly!(
+            __NR_symlinkat,
+            oldname,
+            raw_fd(AT_FDCWD),
+            newname
+        ))
+    }
+}
+
+#[inline]
+pub(crate) fn symlinkat(oldname: &CStr, dirfd: BorrowedFd<'_>, newname: &CStr) -> io::Result<()> {
+    unsafe { ret(syscall_readonly!(__NR_symlinkat, oldname, dirfd, newname)) }
+}
+
+#[inline]
+pub(crate) fn mkdir(pathname: &CStr, mode: Mode) -> io::Result<()> {
+    unsafe {
+        ret(syscall_readonly!(
+            __NR_mkdirat,
+            raw_fd(AT_FDCWD),
+            pathname,
+            mode
+        ))
+    }
+}
+
+#[inline]
+pub(crate) fn mkdirat(dirfd: BorrowedFd<'_>, pathname: &CStr, mode: Mode) -> io::Result<()> {
+    unsafe { ret(syscall_readonly!(__NR_mkdirat, dirfd, pathname, mode)) }
+}
+
+#[inline]
+pub(crate) fn getdents(fd: BorrowedFd<'_>, dirent: &mut [u8]) -> io::Result<usize> {
+    let (dirent_addr_mut, dirent_len) = slice_mut(dirent);
+
+    unsafe { ret_usize(syscall!(__NR_getdents64, fd, dirent_addr_mut, dirent_len)) }
+}
+
+#[inline]
+pub(crate) fn utimensat(
+    dirfd: BorrowedFd<'_>,
+    pathname: &CStr,
+    times: &Timestamps,
+    flags: AtFlags,
+) -> io::Result<()> {
+    _utimensat(dirfd, Some(pathname), times, flags)
+}
+
+#[inline]
+fn _utimensat(
+    dirfd: BorrowedFd<'_>,
+    pathname: Option<&CStr>,
+    times: &Timestamps,
+    flags: AtFlags,
+) -> io::Result<()> {
+    // Assert that `Timestamps` has the expected layout.
+    let _ = unsafe { core::mem::transmute::<Timestamps, [__kernel_timespec; 2]>(times.clone()) };
+
+    #[cfg(target_pointer_width = "32")]
+    unsafe {
+        match ret(syscall_readonly!(
+            __NR_utimensat_time64,
+            dirfd,
+            pathname,
+            by_ref(times),
+            flags
+        )) {
+            Err(io::Errno::NOSYS) => _utimensat_old(dirfd, pathname, times, flags),
+            otherwise => otherwise,
+        }
+    }
+    #[cfg(target_pointer_width = "64")]
+    unsafe {
+        ret(syscall_readonly!(
+            __NR_utimensat,
+            dirfd,
+            pathname,
+            by_ref(times),
+            flags
+        ))
+    }
+}
+
+#[cfg(target_pointer_width = "32")]
+unsafe fn _utimensat_old(
+    dirfd: BorrowedFd<'_>,
+    pathname: Option<&CStr>,
+    times: &Timestamps,
+    flags: AtFlags,
+) -> io::Result<()> {
+    // See the comments in `rustix_clock_gettime_via_syscall` about
+    // emulation.
+    let old_times = [
+        __kernel_old_timespec {
+            tv_sec: times
+                .last_access
+                .tv_sec
+                .try_into()
+                .map_err(|_| io::Errno::OVERFLOW)?,
+            tv_nsec: times
+                .last_access
+                .tv_nsec
+                .try_into()
+                .map_err(|_| io::Errno::INVAL)?,
+        },
+        __kernel_old_timespec {
+            tv_sec: times
+                .last_modification
+                .tv_sec
+                .try_into()
+                .map_err(|_| io::Errno::OVERFLOW)?,
+            tv_nsec: times
+                .last_modification
+                .tv_nsec
+                .try_into()
+                .map_err(|_| io::Errno::INVAL)?,
+        },
+    ];
+    // The length of the array is fixed and not passed into the syscall.
+    let old_times_addr = slice_just_addr(&old_times);
+    ret(syscall_readonly!(
+        __NR_utimensat,
+        dirfd,
+        pathname,
+        old_times_addr,
+        flags
+    ))
+}
+
+#[inline]
+pub(crate) fn futimens(fd: BorrowedFd<'_>, times: &Timestamps) -> io::Result<()> {
+    _utimensat(fd, None, times, AtFlags::empty())
+}
+
+pub(crate) fn accessat(
+    dirfd: BorrowedFd<'_>,
+    path: &CStr,
+    access: Access,
+    flags: AtFlags,
+) -> io::Result<()> {
+    // Linux's `faccessat` doesn't have a flags parameter. If we have
+    // `AT_EACCESS` and we're not setuid or setgid, we can emulate it.
+    if flags.is_empty()
+        || (flags.bits() == AT_EACCESS
+            && crate::process::getuid() == crate::process::geteuid()
+            && crate::process::getgid() == crate::process::getegid())
+    {
+        return unsafe { ret(syscall_readonly!(__NR_faccessat, dirfd, path, access)) };
+    }
+
+    if flags.bits() != AT_EACCESS {
+        return Err(io::Errno::INVAL);
+    }
+
+    // TODO: Use faccessat2 in newer Linux versions.
+    Err(io::Errno::NOSYS)
+}
+
+#[inline]
+pub(crate) fn copy_file_range(
+    fd_in: BorrowedFd<'_>,
+    off_in: Option<&mut u64>,
+    fd_out: BorrowedFd<'_>,
+    off_out: Option<&mut u64>,
+    len: u64,
+) -> io::Result<u64> {
+    let len: usize = len.try_into().unwrap_or(usize::MAX);
+    _copy_file_range(fd_in, off_in, fd_out, off_out, len, 0).map(|result| result as u64)
+}
+
+#[inline]
+fn _copy_file_range(
+    fd_in: BorrowedFd<'_>,
+    off_in: Option<&mut u64>,
+    fd_out: BorrowedFd<'_>,
+    off_out: Option<&mut u64>,
+    len: usize,
+    flags: c::c_uint,
+) -> io::Result<usize> {
+    unsafe {
+        ret_usize(syscall!(
+            __NR_copy_file_range,
+            fd_in,
+            opt_mut(off_in),
+            fd_out,
+            opt_mut(off_out),
+            pass_usize(len),
+            c_uint(flags)
+        ))
+    }
+}
+
+#[inline]
+pub(crate) fn memfd_create(name: &CStr, flags: MemfdFlags) -> io::Result<OwnedFd> {
+    unsafe { ret_owned_fd(syscall_readonly!(__NR_memfd_create, name, flags)) }
+}
+
+#[inline]
+pub(crate) fn sendfile(
+    out_fd: BorrowedFd<'_>,
+    in_fd: BorrowedFd<'_>,
+    offset: Option<&mut u64>,
+    count: usize,
+) -> io::Result<usize> {
+    #[cfg(target_pointer_width = "32")]
+    unsafe {
+        ret_usize(syscall!(
+            __NR_sendfile64,
+            out_fd,
+            in_fd,
+            opt_mut(offset),
+            pass_usize(count)
+        ))
+    }
+    #[cfg(target_pointer_width = "64")]
+    unsafe {
+        ret_usize(syscall!(
+            __NR_sendfile,
+            out_fd,
+            in_fd,
+            opt_mut(offset),
+            pass_usize(count)
+        ))
+    }
+}
diff --git a/vendor/rustix/src/imp/linux_raw/fs/types.rs b/vendor/rustix/src/imp/linux_raw/fs/types.rs
new file mode 100644
index 000000000..959a5ee27
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/fs/types.rs
@@ -0,0 +1,613 @@
+use super::super::c;
+use bitflags::bitflags;
+
+bitflags! {
+    /// `FD_*` constants for use with [`fcntl_getfd`] and [`fcntl_setfd`].
+    ///
+    /// [`fcntl_getfd`]: crate::fs::fcntl_getfd
+    /// [`fcntl_setfd`]: crate::fs::fcntl_setfd
+    pub struct FdFlags: c::c_uint {
+        /// `FD_CLOEXEC`
+        const CLOEXEC = linux_raw_sys::general::FD_CLOEXEC;
+    }
+}
+
+bitflags! {
+    /// `*_OK` constants for use with [`accessat`].
+    ///
+    /// [`accessat`]: fn.accessat.html
+    pub struct Access: c::c_uint {
+        /// `R_OK`
+        const READ_OK = linux_raw_sys::general::R_OK;
+
+        /// `W_OK`
+        const WRITE_OK = linux_raw_sys::general::W_OK;
+
+        /// `X_OK`
+        const EXEC_OK = linux_raw_sys::general::X_OK;
+
+        /// `F_OK`
+        const EXISTS = linux_raw_sys::general::F_OK;
+    }
+}
+
+bitflags! {
+    /// `AT_*` constants for use with [`openat`], [`statat`], and other `*at`
+    /// functions.
+    ///
+    /// [`openat`]: crate::fs::openat
+    /// [`statat`]: crate::fs::statat
+    pub struct AtFlags: c::c_uint {
+        /// `AT_REMOVEDIR`
+        const REMOVEDIR = linux_raw_sys::general::AT_REMOVEDIR;
+
+        /// `AT_SYMLINK_FOLLOW`
+        const SYMLINK_FOLLOW = linux_raw_sys::general::AT_SYMLINK_FOLLOW;
+
+        /// `AT_SYMLINK_NOFOLLOW`
+        const SYMLINK_NOFOLLOW = linux_raw_sys::general::AT_SYMLINK_NOFOLLOW;
+
+        /// `AT_EMPTY_PATH`
+        const EMPTY_PATH = linux_raw_sys::general::AT_EMPTY_PATH;
+
+        /// `AT_EACCESS`
+        const EACCESS = linux_raw_sys::general::AT_EACCESS;
+
+        /// `AT_STATX_SYNC_AS_STAT`
+        const STATX_SYNC_AS_STAT = linux_raw_sys::general::AT_STATX_SYNC_AS_STAT;
+
+        /// `AT_STATX_FORCE_SYNC`
+        const STATX_FORCE_SYNC = linux_raw_sys::general::AT_STATX_FORCE_SYNC;
+
+        /// `AT_STATX_DONT_SYNC`
+        const STATX_DONT_SYNC = linux_raw_sys::general::AT_STATX_DONT_SYNC;
+    }
+}
+
+bitflags! {
+    /// `S_I*` constants for use with [`openat`], [`chmodat`], and [`fchmod`].
+    ///
+    /// [`openat`]: crate::fs::openat
+    /// [`chmodat`]: crate::fs::chmodat
+    /// [`fchmod`]: crate::fs::fchmod
+    pub struct Mode: RawMode {
+        /// `S_IRWXU`
+        const RWXU = linux_raw_sys::general::S_IRWXU;
+
+        /// `S_IRUSR`
+        const RUSR = linux_raw_sys::general::S_IRUSR;
+
+        /// `S_IWUSR`
+        const WUSR = linux_raw_sys::general::S_IWUSR;
+
+        /// `S_IXUSR`
+        const XUSR = linux_raw_sys::general::S_IXUSR;
+
+        /// `S_IRWXG`
+        const RWXG = linux_raw_sys::general::S_IRWXG;
+
+        /// `S_IRGRP`
+        const RGRP = linux_raw_sys::general::S_IRGRP;
+
+        /// `S_IWGRP`
+        const WGRP = linux_raw_sys::general::S_IWGRP;
+
+        /// `S_IXGRP`
+        const XGRP = linux_raw_sys::general::S_IXGRP;
+
+        /// `S_IRWXO`
+        const RWXO = linux_raw_sys::general::S_IRWXO;
+
+        /// `S_IROTH`
+        const ROTH = linux_raw_sys::general::S_IROTH;
+
+        /// `S_IWOTH`
+        const WOTH = linux_raw_sys::general::S_IWOTH;
+
+        /// `S_IXOTH`
+        const XOTH = linux_raw_sys::general::S_IXOTH;
+
+        /// `S_ISUID`
+        const SUID = linux_raw_sys::general::S_ISUID;
+
+        /// `S_ISGID`
+        const SGID = linux_raw_sys::general::S_ISGID;
+
+        /// `S_ISVTX`
+        const SVTX = linux_raw_sys::general::S_ISVTX;
+    }
+}
+
+impl Mode {
+    /// Construct a `Mode` from the mode bits of the `st_mode` field of a
+    /// `Stat`.
+    #[inline]
+    pub const fn from_raw_mode(st_mode: RawMode) -> Self {
+        Self::from_bits_truncate(st_mode)
+    }
+
+    /// Construct an `st_mode` value from `Stat`.
+    #[inline]
+    pub const fn as_raw_mode(self) -> RawMode {
+        self.bits()
+    }
+}
+
+bitflags! {
+    /// `O_*` constants for use with [`openat`].
+    ///
+    /// [`openat`]: crate::fs::openat
+    pub struct OFlags: c::c_uint {
+        /// `O_ACCMODE`
+        const ACCMODE = linux_raw_sys::general::O_ACCMODE;
+
+        /// Similar to `ACCMODE`, but just includes the read/write flags, and
+        /// no other flags.
+        ///
+        /// Some implementations include `O_PATH` in `O_ACCMODE`, when
+        /// sometimes we really just want the read/write bits. Caution is
+        /// indicated, as the presence of `O_PATH` may mean that the read/write
+        /// bits don't have their usual meaning.
+        const RWMODE = linux_raw_sys::general::O_RDONLY |
+                       linux_raw_sys::general::O_WRONLY |
+                       linux_raw_sys::general::O_RDWR;
+
+        /// `O_APPEND`
+        const APPEND = linux_raw_sys::general::O_APPEND;
+
+        /// `O_CREAT`
+        #[doc(alias = "CREAT")]
+        const CREATE = linux_raw_sys::general::O_CREAT;
+
+        /// `O_DIRECTORY`
+        const DIRECTORY = linux_raw_sys::general::O_DIRECTORY;
+
+        /// `O_DSYNC`. Linux 2.6.32 only supports `O_SYNC`.
+        const DSYNC = linux_raw_sys::general::O_SYNC;
+
+        /// `O_EXCL`
+        const EXCL = linux_raw_sys::general::O_EXCL;
+
+        /// `O_FSYNC`. Linux 2.6.32 only supports `O_SYNC`.
+        const FSYNC = linux_raw_sys::general::O_SYNC;
+
+        /// `O_NOFOLLOW`
+        const NOFOLLOW = linux_raw_sys::general::O_NOFOLLOW;
+
+        /// `O_NONBLOCK`
+        const NONBLOCK = linux_raw_sys::general::O_NONBLOCK;
+
+        /// `O_RDONLY`
+        const RDONLY = linux_raw_sys::general::O_RDONLY;
+
+        /// `O_WRONLY`
+        const WRONLY = linux_raw_sys::general::O_WRONLY;
+
+        /// `O_RDWR`
+        const RDWR = linux_raw_sys::general::O_RDWR;
+
+        /// `O_NOCTTY`
+        const NOCTTY = linux_raw_sys::general::O_NOCTTY;
+
+        /// `O_RSYNC`. Linux 2.6.32 only supports `O_SYNC`.
+        const RSYNC = linux_raw_sys::general::O_SYNC;
+
+        /// `O_SYNC`
+        const SYNC = linux_raw_sys::general::O_SYNC;
+
+        /// `O_TRUNC`
+        const TRUNC = linux_raw_sys::general::O_TRUNC;
+
+        /// `O_PATH`
+        const PATH = linux_raw_sys::general::O_PATH;
+
+        /// `O_CLOEXEC`
+        const CLOEXEC = linux_raw_sys::general::O_CLOEXEC;
+
+        /// `O_TMPFILE`
+        const TMPFILE = linux_raw_sys::general::O_TMPFILE;
+
+        /// `O_NOATIME`
+        const NOATIME = linux_raw_sys::general::O_NOATIME;
+    }
+}
+
+bitflags! {
+    /// `RESOLVE_*` constants for use with [`openat2`].
+    ///
+    /// [`openat2`]: crate::fs::openat2
+    #[derive(Default)]
+    pub struct ResolveFlags: u64 {
+        /// `RESOLVE_NO_XDEV`
+        const NO_XDEV = linux_raw_sys::general::RESOLVE_NO_XDEV as u64;
+
+        /// `RESOLVE_NO_MAGICLINKS`
+        const NO_MAGICLINKS = linux_raw_sys::general::RESOLVE_NO_MAGICLINKS as u64;
+
+        /// `RESOLVE_NO_SYMLINKS`
+        const NO_SYMLINKS = linux_raw_sys::general::RESOLVE_NO_SYMLINKS as u64;
+
+        /// `RESOLVE_BENEATH`
+        const BENEATH = linux_raw_sys::general::RESOLVE_BENEATH as u64;
+
+        /// `RESOLVE_IN_ROOT`
+        const IN_ROOT = linux_raw_sys::general::RESOLVE_IN_ROOT as u64;
+
+        /// `RESOLVE_CACHED` (since Linux 5.12)
+        const CACHED = linux_raw_sys::general::RESOLVE_CACHED as u64;
+    }
+}
+
+bitflags! {
+    /// `RENAME_*` constants for use with [`renameat_with`].
+    ///
+    /// [`renameat_with`]: crate::fs::renameat_with
+    pub struct RenameFlags: c::c_uint {
+        /// `RENAME_EXCHANGE`
+        const EXCHANGE = linux_raw_sys::general::RENAME_EXCHANGE;
+
+        /// `RENAME_NOREPLACE`
+        const NOREPLACE = linux_raw_sys::general::RENAME_NOREPLACE;
+
+        /// `RENAME_WHITEOUT`
+        const WHITEOUT = linux_raw_sys::general::RENAME_WHITEOUT;
+    }
+}
+
+/// `S_IF*` constants for use with [`mknodat`] and [`Stat`]'s `st_mode` field.
+///
+/// [`mknodat`]: crate::fs::mknodat
+/// [`Stat`]: crate::fs::Stat
+#[derive(Clone, Copy, Debug, PartialEq, Eq)]
+pub enum FileType {
+    /// `S_IFREG`
+    RegularFile = linux_raw_sys::general::S_IFREG as isize,
+
+    /// `S_IFDIR`
+    Directory = linux_raw_sys::general::S_IFDIR as isize,
+
+    /// `S_IFLNK`
+    Symlink = linux_raw_sys::general::S_IFLNK as isize,
+
+    /// `S_IFIFO`
+    Fifo = linux_raw_sys::general::S_IFIFO as isize,
+
+    /// `S_IFSOCK`
+    Socket = linux_raw_sys::general::S_IFSOCK as isize,
+
+    /// `S_IFCHR`
+    CharacterDevice = linux_raw_sys::general::S_IFCHR as isize,
+
+    /// `S_IFBLK`
+    BlockDevice = linux_raw_sys::general::S_IFBLK as isize,
+
+    /// An unknown filesystem object.
+    Unknown,
+}
+
+impl FileType {
+    /// Construct a `FileType` from the `S_IFMT` bits of the `st_mode` field of
+    /// a `Stat`.
+    #[inline]
+    pub const fn from_raw_mode(st_mode: RawMode) -> Self {
+        match st_mode & linux_raw_sys::general::S_IFMT {
+            linux_raw_sys::general::S_IFREG => Self::RegularFile,
+            linux_raw_sys::general::S_IFDIR => Self::Directory,
+            linux_raw_sys::general::S_IFLNK => Self::Symlink,
+            linux_raw_sys::general::S_IFIFO => Self::Fifo,
+            linux_raw_sys::general::S_IFSOCK => Self::Socket,
+            linux_raw_sys::general::S_IFCHR => Self::CharacterDevice,
+            linux_raw_sys::general::S_IFBLK => Self::BlockDevice,
+            _ => Self::Unknown,
+        }
+    }
+
+    /// Construct an `st_mode` value from `Stat`.
+    #[inline]
+    pub const fn as_raw_mode(self) -> RawMode {
+        match self {
+            Self::RegularFile => linux_raw_sys::general::S_IFREG,
+            Self::Directory => linux_raw_sys::general::S_IFDIR,
+            Self::Symlink => linux_raw_sys::general::S_IFLNK,
+            Self::Fifo => linux_raw_sys::general::S_IFIFO,
+            Self::Socket => linux_raw_sys::general::S_IFSOCK,
+            Self::CharacterDevice => linux_raw_sys::general::S_IFCHR,
+            Self::BlockDevice => linux_raw_sys::general::S_IFBLK,
+            Self::Unknown => linux_raw_sys::general::S_IFMT,
+        }
+    }
+
+    /// Construct a `FileType` from the `d_type` field of a `dirent`.
+    #[inline]
+    pub(crate) const fn from_dirent_d_type(d_type: u8) -> Self {
+        match d_type as u32 {
+            linux_raw_sys::general::DT_REG => Self::RegularFile,
+            linux_raw_sys::general::DT_DIR => Self::Directory,
+            linux_raw_sys::general::DT_LNK => Self::Symlink,
+            linux_raw_sys::general::DT_SOCK => Self::Socket,
+            linux_raw_sys::general::DT_FIFO => Self::Fifo,
+            linux_raw_sys::general::DT_CHR => Self::CharacterDevice,
+            linux_raw_sys::general::DT_BLK => Self::BlockDevice,
+            // linux_raw_sys::general::DT_UNKNOWN |
+            _ => Self::Unknown,
+        }
+    }
+}
+
+/// `POSIX_FADV_*` constants for use with [`fadvise`].
+///
+/// [`fadvise`]: crate::fs::fadvise
+#[derive(Debug, Copy, Clone, Eq, PartialEq)]
+#[repr(u32)]
+pub enum Advice {
+    /// `POSIX_FADV_NORMAL`
+    Normal = linux_raw_sys::general::POSIX_FADV_NORMAL,
+
+    /// `POSIX_FADV_SEQUENTIAL`
+    Sequential = linux_raw_sys::general::POSIX_FADV_SEQUENTIAL,
+
+    /// `POSIX_FADV_RANDOM`
+    Random = linux_raw_sys::general::POSIX_FADV_RANDOM,
+
+    /// `POSIX_FADV_NOREUSE`
+    NoReuse = linux_raw_sys::general::POSIX_FADV_NOREUSE,
+
+    /// `POSIX_FADV_WILLNEED`
+    WillNeed = linux_raw_sys::general::POSIX_FADV_WILLNEED,
+
+    /// `POSIX_FADV_DONTNEED`
+    DontNeed = linux_raw_sys::general::POSIX_FADV_DONTNEED,
+}
+
+bitflags! {
+    /// `MFD_*` constants for use with [`memfd_create`].
+    ///
+    /// [`memfd_create`]: crate::fs::memfd_create
+    pub struct MemfdFlags: c::c_uint {
+        /// `MFD_CLOEXEC`
+        const CLOEXEC = linux_raw_sys::general::MFD_CLOEXEC;
+
+        /// `MFD_ALLOW_SEALING`
+        const ALLOW_SEALING = linux_raw_sys::general::MFD_ALLOW_SEALING;
+
+        /// `MFD_HUGETLB` (since Linux 4.14)
+        const HUGETLB = linux_raw_sys::general::MFD_HUGETLB;
+
+        /// `MFD_HUGE_64KB`
+        const HUGE_64KB = linux_raw_sys::general::MFD_HUGE_64KB;
+        /// `MFD_HUGE_512JB`
+        const HUGE_512KB = linux_raw_sys::general::MFD_HUGE_512KB;
+        /// `MFD_HUGE_1MB`
+        const HUGE_1MB = linux_raw_sys::general::MFD_HUGE_1MB;
+        /// `MFD_HUGE_2MB`
+        const HUGE_2MB = linux_raw_sys::general::MFD_HUGE_2MB;
+        /// `MFD_HUGE_8MB`
+        const HUGE_8MB = linux_raw_sys::general::MFD_HUGE_8MB;
+        /// `MFD_HUGE_16MB`
+        const HUGE_16MB = linux_raw_sys::general::MFD_HUGE_16MB;
+        /// `MFD_HUGE_32MB`
+        const HUGE_32MB = linux_raw_sys::general::MFD_HUGE_32MB;
+        /// `MFD_HUGE_256MB`
+        const HUGE_256MB = linux_raw_sys::general::MFD_HUGE_256MB;
+        /// `MFD_HUGE_512MB`
+        const HUGE_512MB = linux_raw_sys::general::MFD_HUGE_512MB;
+        /// `MFD_HUGE_1GB`
+        const HUGE_1GB = linux_raw_sys::general::MFD_HUGE_1GB;
+        /// `MFD_HUGE_2GB`
+        const HUGE_2GB = linux_raw_sys::general::MFD_HUGE_2GB;
+        /// `MFD_HUGE_16GB`
+        const HUGE_16GB = linux_raw_sys::general::MFD_HUGE_16GB;
+    }
+}
+
+bitflags! {
+    /// `F_SEAL_*` constants for use with [`fcntl_add_seals`] and
+    /// [`fcntl_get_seals`].
+    ///
+    /// [`fcntl_add_seals`]: crate::fs::fcntl_add_seals
+    /// [`fcntl_get_seals`]: crate::fs::fcntl_get_seals
+    pub struct SealFlags: u32 {
+       /// `F_SEAL_SEAL`.
+       const SEAL = linux_raw_sys::general::F_SEAL_SEAL;
+       /// `F_SEAL_SHRINK`.
+       const SHRINK = linux_raw_sys::general::F_SEAL_SHRINK;
+       /// `F_SEAL_GROW`.
+       const GROW = linux_raw_sys::general::F_SEAL_GROW;
+       /// `F_SEAL_WRITE`.
+       const WRITE = linux_raw_sys::general::F_SEAL_WRITE;
+       /// `F_SEAL_FUTURE_WRITE` (since Linux 5.1)
+       const FUTURE_WRITE = linux_raw_sys::general::F_SEAL_FUTURE_WRITE;
+    }
+}
+
+bitflags! {
+    /// `STATX_*` constants for use with [`statx`].
+    ///
+    /// [`statx`]: crate::fs::statx
+    pub struct StatxFlags: u32 {
+        /// `STATX_TYPE`
+        const TYPE = linux_raw_sys::general::STATX_TYPE;
+
+        /// `STATX_MODE`
+        const MODE = linux_raw_sys::general::STATX_MODE;
+
+        /// `STATX_NLINK`
+        const NLINK = linux_raw_sys::general::STATX_NLINK;
+
+        /// `STATX_UID`
+        const UID = linux_raw_sys::general::STATX_UID;
+
+        /// `STATX_GID`
+        const GID = linux_raw_sys::general::STATX_GID;
+
+        /// `STATX_ATIME`
+        const ATIME = linux_raw_sys::general::STATX_ATIME;
+
+        /// `STATX_MTIME`
+        const MTIME = linux_raw_sys::general::STATX_MTIME;
+
+        /// `STATX_CTIME`
+        const CTIME = linux_raw_sys::general::STATX_CTIME;
+
+        /// `STATX_INO`
+        const INO = linux_raw_sys::general::STATX_INO;
+
+        /// `STATX_SIZE`
+        const SIZE = linux_raw_sys::general::STATX_SIZE;
+
+        /// `STATX_BLOCKS`
+        const BLOCKS = linux_raw_sys::general::STATX_BLOCKS;
+
+        /// `STATX_BASIC_STATS`
+        const BASIC_STATS = linux_raw_sys::general::STATX_BASIC_STATS;
+
+        /// `STATX_BTIME`
+        const BTIME = linux_raw_sys::general::STATX_BTIME;
+
+        /// `STATX_MNT_ID` (since Linux 5.8)
+        const MNT_ID = linux_raw_sys::general::STATX_MNT_ID;
+
+        /// `STATX_ALL`
+        const ALL = linux_raw_sys::general::STATX_ALL;
+    }
+}
+
+bitflags! {
+    /// `FALLOC_FL_*` constants for use with [`fallocate`].
+    ///
+    /// [`fallocate`]: crate::fs::fallocate
+    pub struct FallocateFlags: u32 {
+        /// `FALLOC_FL_KEEP_SIZE`
+        const KEEP_SIZE = linux_raw_sys::general::FALLOC_FL_KEEP_SIZE;
+        /// `FALLOC_FL_PUNCH_HOLE`
+        const PUNCH_HOLE = linux_raw_sys::general::FALLOC_FL_PUNCH_HOLE;
+        /// `FALLOC_FL_NO_HIDE_STALE`
+        const NO_HIDE_STALE = linux_raw_sys::general::FALLOC_FL_NO_HIDE_STALE;
+        /// `FALLOC_FL_COLLAPSE_RANGE`
+        const COLLAPSE_RANGE = linux_raw_sys::general::FALLOC_FL_COLLAPSE_RANGE;
+        /// `FALLOC_FL_ZERO_RANGE`
+        const ZERO_RANGE = linux_raw_sys::general::FALLOC_FL_ZERO_RANGE;
+        /// `FALLOC_FL_INSERT_RANGE`
+        const INSERT_RANGE = linux_raw_sys::general::FALLOC_FL_INSERT_RANGE;
+        /// `FALLOC_FL_UNSHARE_RANGE`
+        const UNSHARE_RANGE = linux_raw_sys::general::FALLOC_FL_UNSHARE_RANGE;
+    }
+}
+
+/// `LOCK_*` constants for use with [`flock`]
+///
+/// [`flock`]: crate::fs::flock
+#[derive(Clone, Copy, Debug, PartialEq, Eq)]
+#[repr(u32)]
+pub enum FlockOperation {
+    /// `LOCK_SH`
+    LockShared = linux_raw_sys::general::LOCK_SH,
+    /// `LOCK_EX`
+    LockExclusive = linux_raw_sys::general::LOCK_EX,
+    /// `LOCK_UN`
+    Unlock = linux_raw_sys::general::LOCK_UN,
+    /// `LOCK_SH | LOCK_NB`
+    NonBlockingLockShared = linux_raw_sys::general::LOCK_SH | linux_raw_sys::general::LOCK_NB,
+    /// `LOCK_EX | LOCK_NB`
+    NonBlockingLockExclusive = linux_raw_sys::general::LOCK_EX | linux_raw_sys::general::LOCK_NB,
+    /// `LOCK_UN | LOCK_NB`
+    NonBlockingUnlock = linux_raw_sys::general::LOCK_UN | linux_raw_sys::general::LOCK_NB,
+}
+
+/// `struct stat` for use with [`statat`] and [`fstat`].
+///
+/// [`statat`]: crate::fs::statat
+/// [`fstat`]: crate::fs::fstat
+// On 32-bit, and mips64, Linux's `struct stat64` has a 32-bit `st_mtime` and
+// friends, so we use our own struct, populated from `statx` where possible, to
+// avoid the y2038 bug.
+#[cfg(any(target_pointer_width = "32", target_arch = "mips64"))]
+#[repr(C)]
+#[derive(Debug, Copy, Clone)]
+#[allow(missing_docs)]
+pub struct Stat {
+    pub st_dev: u64,
+    pub st_mode: u32,
+    pub st_nlink: u32,
+    pub st_uid: u32,
+    pub st_gid: u32,
+    pub st_rdev: u64,
+    pub st_size: i64,
+    pub st_blksize: u32,
+    pub st_blocks: u64,
+    pub st_atime: u64,
+    pub st_atime_nsec: u32,
+    pub st_mtime: u64,
+    pub st_mtime_nsec: u32,
+    pub st_ctime: u64,
+    pub st_ctime_nsec: u32,
+    pub st_ino: u64,
+}
+
+/// `struct stat` for use with [`statat`] and [`fstat`].
+///
+/// [`statat`]: crate::fs::statat
+/// [`fstat`]: crate::fs::fstat
+#[cfg(all(target_pointer_width = "64", not(target_arch = "mips64")))]
+pub type Stat = linux_raw_sys::general::stat;
+
+/// `struct statfs` for use with [`fstatfs`].
+///
+/// [`fstatfs`]: crate::fs::fstatfs
+#[cfg(target_pointer_width = "32")]
+#[allow(clippy::module_name_repetitions)]
+pub type StatFs = linux_raw_sys::general::statfs64;
+
+/// `struct statfs` for use with [`fstatfs`].
+///
+/// [`fstatfs`]: crate::fs::fstatfs
+#[cfg(target_pointer_width = "64")]
+#[allow(clippy::module_name_repetitions)]
+pub type StatFs = linux_raw_sys::general::statfs64;
+
+/// `struct statx` for use with [`statx`].
+///
+/// [`statx`]: crate::fs::statx
+pub type Statx = linux_raw_sys::general::statx;
+
+/// `struct statx_timestamp` for use with [`Statx`].
+pub type StatxTimestamp = linux_raw_sys::general::statx_timestamp;
+
+/// `mode_t`
+#[cfg(not(any(
+    target_arch = "x86",
+    target_arch = "sparc",
+    target_arch = "avr",
+    target_arch = "arm",
+)))]
+pub type RawMode = linux_raw_sys::general::__kernel_mode_t;
+
+/// `mode_t
+#[cfg(any(
+    target_arch = "x86",
+    target_arch = "sparc",
+    target_arch = "avr",
+    target_arch = "arm",
+))]
+// Don't use `__kernel_mode_t` since it's `u16` which differs from `st_size`.
+pub type RawMode = c::c_uint;
+
+/// `dev_t`
+// Within the kernel the dev_t is 32-bit, but userspace uses a 64-bit field.
+pub type Dev = u64;
+
+/// `__fsword_t`
+#[cfg(not(target_arch = "mips64"))]
+pub type FsWord = linux_raw_sys::general::__fsword_t;
+
+/// `__fsword_t`
+#[cfg(target_arch = "mips64")]
+pub type FsWord = i64;
+
+pub use linux_raw_sys::general::{UTIME_NOW, UTIME_OMIT};
+
+/// `PROC_SUPER_MAGIC`—The magic number for the procfs filesystem.
+pub const PROC_SUPER_MAGIC: FsWord = linux_raw_sys::general::PROC_SUPER_MAGIC as FsWord;
+
+/// `NFS_SUPER_MAGIC`—The magic number for the NFS filesystem.
+pub const NFS_SUPER_MAGIC: FsWord = linux_raw_sys::general::NFS_SUPER_MAGIC as FsWord;
diff --git a/vendor/rustix/src/imp/linux_raw/io/epoll.rs b/vendor/rustix/src/imp/linux_raw/io/epoll.rs
new file mode 100644
index 000000000..4362e40fb
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/io/epoll.rs
@@ -0,0 +1,551 @@
+//! epoll support.
+//!
+//! This is an experiment, and it isn't yet clear whether epoll is the right
+//! level of abstraction at which to introduce safety. But it works fairly well
+//! in simple examples 🙂.
+//!
+//! # Examples
+//!
+//! ```rust,no_run
+//! # #![cfg_attr(io_lifetimes_use_std, feature(io_safety))]
+//! # #[cfg(feature = "net")]
+//! # fn main() -> std::io::Result<()> {
+//! use io_lifetimes::AsFd;
+//! use rustix::io::epoll::{self, Epoll};
+//! use rustix::io::{ioctl_fionbio, read, write};
+//! use rustix::net::{
+//!     accept, bind_v4, listen, socket, AddressFamily, Ipv4Addr, Protocol, SocketAddrV4,
+//!     SocketType,
+//! };
+//! use std::os::unix::io::AsRawFd;
+//!
+//! // Create a socket and listen on it.
+//! let listen_sock = socket(AddressFamily::INET, SocketType::STREAM, Protocol::default())?;
+//! bind_v4(&listen_sock, &SocketAddrV4::new(Ipv4Addr::LOCALHOST, 0))?;
+//! listen(&listen_sock, 1)?;
+//!
+//! // Create an epoll object. Using `Owning` here means the epoll object will
+//! // take ownership of the file descriptors registered with it.
+//! let epoll = Epoll::new(epoll::CreateFlags::CLOEXEC, epoll::Owning::new())?;
+//!
+//! // Remember the socket raw fd, which we use for comparisons only.
+//! let raw_listen_sock = listen_sock.as_fd().as_raw_fd();
+//!
+//! // Register the socket with the epoll object.
+//! epoll.add(listen_sock, epoll::EventFlags::IN)?;
+//!
+//! // Process events.
+//! let mut event_list = epoll::EventVec::with_capacity(4);
+//! loop {
+//!     epoll.wait(&mut event_list, -1)?;
+//!     for (_event_flags, target) in &event_list {
+//!         if target.as_raw_fd() == raw_listen_sock {
+//!             // Accept a new connection, set it to non-blocking, and
+//!             // register to be notified when it's ready to write to.
+//!             let conn_sock = accept(&*target)?;
+//!             ioctl_fionbio(&conn_sock, true)?;
+//!             epoll.add(conn_sock, epoll::EventFlags::OUT | epoll::EventFlags::ET)?;
+//!         } else {
+//!             // Write a message to the stream and then unregister it.
+//!             write(&*target, b"hello\n")?;
+//!             let _ = epoll.del(target)?;
+//!         }
+//!     }
+//! }
+//! # }
+//! # #[cfg(not(feature = "net"))]
+//! # fn main() {}
+//! ```
+
+#![allow(unsafe_code)]
+
+use super::super::c;
+use crate::fd::{AsFd, AsRawFd, BorrowedFd, RawFd};
+#[cfg(feature = "std")]
+use crate::fd::{FromFd, FromRawFd, IntoFd, IntoRawFd};
+use crate::imp::io::syscalls::{epoll_add, epoll_create, epoll_del, epoll_mod, epoll_wait};
+use crate::io::{self, OwnedFd};
+use alloc::vec::Vec;
+use bitflags::bitflags;
+use core::fmt;
+use core::marker::PhantomData;
+use core::ops::Deref;
+use core::ptr::null;
+
+bitflags! {
+    /// `EPOLL_*` for use with [`Epoll::new`].
+    pub struct CreateFlags: c::c_uint {
+        /// `EPOLL_CLOEXEC`
+        const CLOEXEC = linux_raw_sys::general::EPOLL_CLOEXEC;
+    }
+}
+
+bitflags! {
+    /// `EPOLL*` for use with [`Epoll::add`].
+    #[derive(Default)]
+    pub struct EventFlags: u32 {
+        /// `EPOLLIN`
+        const IN = linux_raw_sys::general::EPOLLIN as u32;
+
+        /// `EPOLLOUT`
+        const OUT = linux_raw_sys::general::EPOLLOUT as u32;
+
+        /// `EPOLLPRI`
+        const PRI = linux_raw_sys::general::EPOLLPRI as u32;
+
+        /// `EPOLLERR`
+        const ERR = linux_raw_sys::general::EPOLLERR as u32;
+
+        /// `EPOLLHUP`
+        const HUP = linux_raw_sys::general::EPOLLHUP as u32;
+
+        /// `EPOLLET`
+        const ET = linux_raw_sys::general::EPOLLET as u32;
+
+        /// `EPOLLONESHOT`
+        const ONESHOT = linux_raw_sys::general::EPOLLONESHOT as u32;
+
+        /// `EPOLLWAKEUP`
+        const WAKEUP = linux_raw_sys::general::EPOLLWAKEUP as u32;
+
+        /// `EPOLLEXCLUSIVE`
+        const EXCLUSIVE = linux_raw_sys::general::EPOLLEXCLUSIVE as u32;
+    }
+}
+
+/// A reference to a `T`.
+pub struct Ref<'a, T> {
+    t: T,
+    _phantom: PhantomData<&'a T>,
+}
+
+impl<'a, T> Ref<'a, T> {
+    #[inline]
+    fn new(t: T) -> Self {
+        Self {
+            t,
+            _phantom: PhantomData,
+        }
+    }
+
+    #[inline]
+    fn consume(self) -> T {
+        self.t
+    }
+}
+
+impl<'a, T> Deref for Ref<'a, T> {
+    type Target = T;
+
+    #[inline]
+    fn deref(&self) -> &T {
+        &self.t
+    }
+}
+
+impl<'a, T: fmt::Debug> fmt::Debug for Ref<'a, T> {
+    fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result {
+        self.t.fmt(fmt)
+    }
+}
+
+/// A trait for data stored within an [`Epoll`] instance.
+pub trait Context {
+    /// The type of an element owned by this context.
+    type Data;
+
+    /// The type of a value used to refer to an element owned by this context.
+    type Target: AsFd;
+
+    /// Assume ownership of `data`, and returning a `Target`.
+    fn acquire<'call>(&self, data: Self::Data) -> Ref<'call, Self::Target>;
+
+    /// Encode `target` as a `u64`. The only requirement on this value is that
+    /// it be decodable by `decode`.
+    fn encode(&self, target: Ref<'_, Self::Target>) -> u64;
+
+    /// Decode `raw`, which is a value encoded by `encode`, into a `Target`.
+    ///
+    /// # Safety
+    ///
+    /// `raw` must be a `u64` value returned from `encode`, from the same
+    /// context, and within the context's lifetime.
+    unsafe fn decode<'call>(&self, raw: u64) -> Ref<'call, Self::Target>;
+
+    /// Release ownership of the value referred to by `target` and return it.
+    fn release(&self, target: Ref<'_, Self::Target>) -> Self::Data;
+}
+
+/// A type implementing [`Context`] where the `Data` type is `BorrowedFd<'a>`.
+pub struct Borrowing<'a> {
+    _phantom: PhantomData<BorrowedFd<'a>>,
+}
+
+impl<'a> Context for Borrowing<'a> {
+    type Data = BorrowedFd<'a>;
+    type Target = BorrowedFd<'a>;
+
+    #[inline]
+    fn acquire<'call>(&self, data: Self::Data) -> Ref<'call, Self::Target> {
+        Ref::new(data)
+    }
+
+    #[inline]
+    fn encode(&self, target: Ref<'_, Self::Target>) -> u64 {
+        target.as_raw_fd() as u64
+    }
+
+    #[inline]
+    unsafe fn decode<'call>(&self, raw: u64) -> Ref<'call, Self::Target> {
+        Ref::new(BorrowedFd::<'a>::borrow_raw(raw as RawFd))
+    }
+
+    #[inline]
+    fn release(&self, target: Ref<'_, Self::Target>) -> Self::Data {
+        target.consume()
+    }
+}
+
+/// A type implementing [`Context`] where the `Data` type is `T`, a type
+/// implementing `IntoFd` and `FromFd`.
+///
+/// This may be used with [`OwnedFd`], or higher-level types like
+/// [`std::fs::File`] or [`std::net::TcpStream`].
+#[cfg(feature = "std")]
+pub struct Owning<'context, T: IntoFd + FromFd> {
+    _phantom: PhantomData<&'context T>,
+}
+
+#[cfg(feature = "std")]
+impl<'context, T: IntoFd + FromFd> Owning<'context, T> {
+    /// Creates a new empty `Owning`.
+    #[allow(clippy::new_without_default)] // This is a specialized type that doesn't need to be generically constructible.
+    #[inline]
+    pub fn new() -> Self {
+        Self {
+            _phantom: PhantomData,
+        }
+    }
+}
+
+#[cfg(feature = "std")]
+impl<'context, T: AsFd + IntoFd + FromFd> Context for Owning<'context, T> {
+    type Data = T;
+    type Target = BorrowedFd<'context>;
+
+    #[inline]
+    fn acquire<'call>(&self, data: Self::Data) -> Ref<'call, Self::Target> {
+        let raw_fd = data.into_fd().into_raw_fd();
+        // Safety: `epoll` will assign ownership of the file descriptor to the
+        // kernel epoll object. We use `IntoFd`+`IntoRawFd` to consume the
+        // `Data` and extract the raw file descriptor and then "borrow" it
+        // with `borrow_raw` knowing that the borrow won't outlive the
+        // kernel epoll object.
+        unsafe { Ref::new(BorrowedFd::<'context>::borrow_raw(raw_fd)) }
+    }
+
+    #[inline]
+    fn encode(&self, target: Ref<'_, Self::Target>) -> u64 {
+        target.as_fd().as_raw_fd() as u64
+    }
+
+    #[inline]
+    unsafe fn decode<'call>(&self, raw: u64) -> Ref<'call, Self::Target> {
+        Ref::new(BorrowedFd::<'context>::borrow_raw(raw as RawFd))
+    }
+
+    #[inline]
+    fn release(&self, target: Ref<'_, Self::Target>) -> Self::Data {
+        let raw_fd = target.consume().as_raw_fd();
+
+        // Safety: The file descriptor was held by the kernel epoll object and
+        // is now being released, so we can create a new `OwnedFd` that assumes
+        // ownership.
+        unsafe { T::from_fd(io_lifetimes::OwnedFd::from_raw_fd(raw_fd)) }
+    }
+}
+
+/// An "epoll", an interface to an OS object allowing one to repeatedly wait
+/// for events from a set of file descriptors efficiently.
+pub struct Epoll<Context: self::Context> {
+    epoll_fd: OwnedFd,
+    context: Context,
+}
+
+impl<Context: self::Context> Epoll<Context> {
+    /// `epoll_create1(flags)`—Creates a new `Epoll`.
+    ///
+    /// Use the [`CreateFlags::CLOEXEC`] flag to prevent the resulting file
+    /// descriptor from being implicitly passed across `exec` boundaries.
+    #[inline]
+    #[doc(alias = "epoll_create1")]
+    pub fn new(flags: CreateFlags, context: Context) -> io::Result<Self> {
+        // Safety: We're calling `epoll_create1` via FFI and we know how it
+        // behaves.
+        Ok(Self {
+            epoll_fd: epoll_create(flags)?,
+            context,
+        })
+    }
+
+    /// `epoll_ctl(self, EPOLL_CTL_ADD, data, event)`—Adds an element to an
+    /// `Epoll`.
+    ///
+    /// This registers interest in any of the events set in `events` occurring
+    /// on the file descriptor associated with `data`.
+    #[doc(alias = "epoll_ctl")]
+    pub fn add(
+        &self,
+        data: Context::Data,
+        event_flags: EventFlags,
+    ) -> io::Result<Ref<'_, Context::Target>> {
+        // Safety: We're calling `epoll_ctl` via FFI and we know how it
+        // behaves.
+        unsafe {
+            let target = self.context.acquire(data);
+            let raw_fd = target.as_fd().as_raw_fd();
+            let encoded = self.context.encode(target);
+            epoll_add(
+                self.epoll_fd.as_fd(),
+                raw_fd,
+                &linux_raw_sys::general::epoll_event {
+                    events: event_flags.bits(),
+                    data: encoded,
+                },
+            )?;
+            Ok(self.context.decode(encoded))
+        }
+    }
+
+    /// `epoll_ctl(self, EPOLL_CTL_MOD, target, event)`—Modifies an element in
+    /// this `Epoll`.
+    ///
+    /// This sets the events of interest with `target` to `events`.
+    #[doc(alias = "epoll_ctl")]
+    pub fn mod_(
+        &self,
+        target: Ref<'_, Context::Target>,
+        event_flags: EventFlags,
+    ) -> io::Result<()> {
+        let raw_fd = target.as_fd().as_raw_fd();
+        let encoded = self.context.encode(target);
+        // Safety: We're calling `epoll_ctl` via FFI and we know how it
+        // behaves.
+        unsafe {
+            epoll_mod(
+                self.epoll_fd.as_fd(),
+                raw_fd,
+                &linux_raw_sys::general::epoll_event {
+                    events: event_flags.bits(),
+                    data: encoded,
+                },
+            )
+        }
+    }
+
+    /// `epoll_ctl(self, EPOLL_CTL_DEL, target, NULL)`—Removes an element in
+    /// this `Epoll`.
+    ///
+    /// This also returns the owning `Data`.
+    #[doc(alias = "epoll_ctl")]
+    pub fn del(&self, target: Ref<'_, Context::Target>) -> io::Result<Context::Data> {
+        // Safety: We're calling `epoll_ctl` via FFI and we know how it
+        // behaves.
+        unsafe {
+            let raw_fd = target.as_fd().as_raw_fd();
+            epoll_del(self.epoll_fd.as_fd(), raw_fd)?;
+        }
+        Ok(self.context.release(target))
+    }
+
+    /// `epoll_wait(self, events, timeout)`—Waits for registered events of
+    /// interest.
+    ///
+    /// For each event of interest, an element is written to `events`. On
+    /// success, this returns the number of written elements.
+    #[doc(alias = "epoll_wait")]
+    pub fn wait<'context>(
+        &'context self,
+        event_list: &mut EventVec<'context, Context>,
+        timeout: c::c_int,
+    ) -> io::Result<()> {
+        // Safety: We're calling `epoll_wait` via FFI and we know how it
+        // behaves.
+        unsafe {
+            event_list.events.set_len(0);
+            let nfds = epoll_wait(
+                self.epoll_fd.as_fd(),
+                event_list.events[..].as_mut_ptr().cast(),
+                event_list.events.capacity(),
+                timeout,
+            )?;
+            event_list.events.set_len(nfds);
+            event_list.context = &self.context;
+        }
+
+        Ok(())
+    }
+}
+
+#[cfg(feature = "std")]
+impl<'context, T: AsFd + IntoFd + FromFd> AsRawFd for Epoll<Owning<'context, T>> {
+    fn as_raw_fd(&self) -> RawFd {
+        self.epoll_fd.as_raw_fd()
+    }
+}
+
+#[cfg(feature = "std")]
+impl<'context, T: AsFd + IntoFd + FromFd> IntoRawFd for Epoll<Owning<'context, T>> {
+    fn into_raw_fd(self) -> RawFd {
+        self.epoll_fd.into_raw_fd()
+    }
+}
+
+#[cfg(feature = "std")]
+impl<'context, T: AsFd + IntoFd + FromFd> FromRawFd for Epoll<Owning<'context, T>> {
+    unsafe fn from_raw_fd(fd: RawFd) -> Self {
+        Self {
+            epoll_fd: OwnedFd::from_raw_fd(fd),
+            context: Owning::new(),
+        }
+    }
+}
+
+#[cfg(feature = "std")]
+impl<'context, T: AsFd + IntoFd + FromFd> AsFd for Epoll<Owning<'context, T>> {
+    fn as_fd(&self) -> BorrowedFd<'_> {
+        self.epoll_fd.as_fd()
+    }
+}
+
+#[cfg(feature = "std")]
+impl<'context, T: AsFd + IntoFd + FromFd> From<Epoll<Owning<'context, T>>> for OwnedFd {
+    fn from(epoll: Epoll<Owning<'context, T>>) -> Self {
+        epoll.epoll_fd
+    }
+}
+
+#[cfg(feature = "std")]
+impl<'context, T: AsFd + IntoFd + FromFd> From<OwnedFd> for Epoll<Owning<'context, T>> {
+    fn from(fd: OwnedFd) -> Self {
+        Self {
+            epoll_fd: fd,
+            context: Owning::new(),
+        }
+    }
+}
+
+/// An iterator over the `Event`s in an `EventVec`.
+pub struct Iter<'context, Context: self::Context> {
+    iter: core::slice::Iter<'context, Event>,
+    context: *const Context,
+    _phantom: PhantomData<&'context Context>,
+}
+
+impl<'context, Context: self::Context> Iterator for Iter<'context, Context> {
+    type Item = (EventFlags, Ref<'context, Context::Target>);
+
+    fn next(&mut self) -> Option<Self::Item> {
+        self.iter.next().map(|event| {
+            // Safety: `self.context` is guaranteed to be valid because we hold
+            // `'context` for it. And we know this event is associated with this
+            // context because `wait` sets both.
+            let decoded = unsafe { (*self.context).decode(event.encoded) };
+
+            (event.event_flags, decoded)
+        })
+    }
+}
+
+/// A record of an event that occurred.
+#[repr(C)]
+#[cfg_attr(target_arch = "x86_64", repr(packed))]
+struct Event {
+    // Match the layout of `linux_raw_sys::general::epoll_event`. We just use a
+    // `u64` instead of the full union; `Context` implementations will simply
+    // need to deal with casting the value into and out of the `u64`
+    // themselves.
+    event_flags: EventFlags,
+    encoded: u64,
+}
+
+/// A vector of `Event`s, plus context for interpreting them.
+pub struct EventVec<'context, Context: self::Context> {
+    events: Vec<Event>,
+    context: *const Context,
+    _phantom: PhantomData<&'context Context>,
+}
+
+impl<'context, Context: self::Context> EventVec<'context, Context> {
+    /// Constructs an `EventVec` with memory for `capacity` `Event`s.
+    #[inline]
+    pub fn with_capacity(capacity: usize) -> Self {
+        Self {
+            events: Vec::with_capacity(capacity),
+            context: null(),
+            _phantom: PhantomData,
+        }
+    }
+
+    /// Returns the current `Event` capacity of this `EventVec`.
+    #[inline]
+    pub fn capacity(&self) -> usize {
+        self.events.capacity()
+    }
+
+    /// Reserves enough memory for at least `additional` more `Event`s.
+    #[inline]
+    pub fn reserve(&mut self, additional: usize) {
+        self.events.reserve(additional);
+    }
+
+    /// Reserves enough memory for exactly `additional` more `Event`s.
+    #[inline]
+    pub fn reserve_exact(&mut self, additional: usize) {
+        self.events.reserve_exact(additional);
+    }
+
+    /// Clears all the `Events` out of this `EventVec`.
+    #[inline]
+    pub fn clear(&mut self) {
+        self.events.clear();
+    }
+
+    /// Shrinks the capacity of this `EventVec` as much as possible.
+    #[inline]
+    pub fn shrink_to_fit(&mut self) {
+        self.events.shrink_to_fit();
+    }
+
+    /// Returns an iterator over the `Event`s in this `EventVec`.
+    #[inline]
+    pub fn iter(&self) -> Iter<'_, Context> {
+        Iter {
+            iter: self.events.iter(),
+            context: self.context,
+            _phantom: PhantomData,
+        }
+    }
+
+    /// Returns the number of `Event`s logically contained in this `EventVec`.
+    #[inline]
+    pub fn len(&mut self) -> usize {
+        self.events.len()
+    }
+
+    /// Tests whether this `EventVec` is logically empty.
+    #[inline]
+    pub fn is_empty(&mut self) -> bool {
+        self.events.is_empty()
+    }
+}
+
+impl<'context, Context: self::Context> IntoIterator for &'context EventVec<'context, Context> {
+    type IntoIter = Iter<'context, Context>;
+    type Item = (EventFlags, Ref<'context, Context::Target>);
+
+    #[inline]
+    fn into_iter(self) -> Self::IntoIter {
+        self.iter()
+    }
+}
diff --git a/vendor/rustix/src/imp/linux_raw/io/errno.rs b/vendor/rustix/src/imp/linux_raw/io/errno.rs
new file mode 100644
index 000000000..2637ae02e
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/io/errno.rs
@@ -0,0 +1,511 @@
+//! The `rustix` `Errno` type.
+//!
+//! This type holds an OS error code, which conceptually corresponds to an
+//! `errno` value.
+//!
+//! # Safety
+//!
+//! Linux uses error codes in `-4095..0`; we use rustc attributes to describe
+//! this restricted range of values.
+#![allow(unsafe_code)]
+#![cfg_attr(not(rustc_attrs), allow(unused_unsafe))]
+
+use super::super::c;
+use crate::imp::fd::RawFd;
+use crate::imp::reg::{RetNumber, RetReg};
+use crate::io;
+use linux_raw_sys::errno;
+
+/// The error type for `rustix` APIs.
+///
+/// This is similar to `std::io::Error`, but only holds an OS error code,
+/// and no extra error value.
+#[repr(transparent)]
+#[doc(alias = "errno")]
+#[derive(Eq, PartialEq, Hash, Copy, Clone)]
+// Linux returns negated error codes, and we leave them in negated form, so
+// error codes are in `-4095..0`.
+#[cfg_attr(rustc_attrs, rustc_layout_scalar_valid_range_start(0xf001))]
+#[cfg_attr(rustc_attrs, rustc_layout_scalar_valid_range_end(0xffff))]
+pub struct Errno(u16);
+
+impl Errno {
+    /// Extract an `Errno` value from a `std::io::Error`.
+    ///
+    /// This isn't a `From` conversion because it's expected to be relatively
+    /// uncommon.
+    #[cfg(feature = "std")]
+    #[inline]
+    pub fn from_io_error(io_err: &std::io::Error) -> Option<Self> {
+        io_err.raw_os_error().and_then(|raw| {
+            // `std::io::Error` could theoretically have arbitrary "OS error"
+            // values, so check that they're in Linux's range.
+            if (1..4096).contains(&raw) {
+                Some(Self::from_errno(raw as u32))
+            } else {
+                None
+            }
+        })
+    }
+
+    /// Extract the raw OS error number from this error.
+    #[inline]
+    pub const fn raw_os_error(self) -> i32 {
+        (self.0 as i16 as i32).wrapping_neg()
+    }
+
+    /// Construct an `Errno` from a raw OS error number.
+    #[inline]
+    pub const fn from_raw_os_error(raw: i32) -> Self {
+        Self::from_errno(raw as u32)
+    }
+
+    /// Convert from a C errno value (which is positive) to an `Errno`.
+    const fn from_errno(raw: u32) -> Self {
+        // We store error values in negated form, so that we don't have to negate
+        // them after every syscall.
+        let encoded = raw.wrapping_neg() as u16;
+
+        // TODO: Use Range::contains, once that's `const`.
+        const_assert!(encoded >= 0xf001);
+
+        // Safety: Linux syscalls return negated error values in the range
+        // `-4095..0`, which we just asserted.
+        unsafe { Self(encoded) }
+    }
+}
+
+/// Check for an error from the result of a syscall which encodes a
+/// `c::c_int` on success.
+#[inline]
+pub(in crate::imp) fn try_decode_c_int<Num: RetNumber>(raw: RetReg<Num>) -> io::Result<c::c_int> {
+    if raw.is_in_range(-4095..0) {
+        // Safety: `raw` must be in `-4095..0`, and we just checked that raw is
+        // in that range.
+        return Err(unsafe { Errno(raw.decode_error_code()) });
+    }
+
+    Ok(raw.decode_c_int())
+}
+
+/// Check for an error from the result of a syscall which encodes a
+/// `c::c_uint` on success.
+#[inline]
+pub(in crate::imp) fn try_decode_c_uint<Num: RetNumber>(raw: RetReg<Num>) -> io::Result<c::c_uint> {
+    if raw.is_in_range(-4095..0) {
+        // Safety: `raw` must be in `-4095..0`, and we just checked that raw is
+        // in that range.
+        return Err(unsafe { Errno(raw.decode_error_code()) });
+    }
+
+    Ok(raw.decode_c_uint())
+}
+
+/// Check for an error from the result of a syscall which encodes a `usize` on
+/// success.
+#[inline]
+pub(in crate::imp) fn try_decode_usize<Num: RetNumber>(raw: RetReg<Num>) -> io::Result<usize> {
+    if raw.is_in_range(-4095..0) {
+        // Safety: `raw` must be in `-4095..0`, and we just checked that raw is
+        // in that range.
+        return Err(unsafe { Errno(raw.decode_error_code()) });
+    }
+
+    Ok(raw.decode_usize())
+}
+
+/// Check for an error from the result of a syscall which encodes a
+/// `*mut c_void` on success.
+#[inline]
+pub(in crate::imp) fn try_decode_void_star<Num: RetNumber>(
+    raw: RetReg<Num>,
+) -> io::Result<*mut c::c_void> {
+    if raw.is_in_range(-4095..0) {
+        // Safety: `raw` must be in `-4095..0`, and we just checked that raw is
+        // in that range.
+        return Err(unsafe { Errno(raw.decode_error_code()) });
+    }
+
+    Ok(raw.decode_void_star())
+}
+
+/// Check for an error from the result of a syscall which encodes a
+/// `u64` on success.
+#[cfg(target_pointer_width = "64")]
+#[inline]
+pub(in crate::imp) fn try_decode_u64<Num: RetNumber>(raw: RetReg<Num>) -> io::Result<u64> {
+    if raw.is_in_range(-4095..0) {
+        // Safety: `raw` must be in `-4095..0`, and we just checked that raw is
+        // in that range.
+        return Err(unsafe { Errno(raw.decode_error_code()) });
+    }
+
+    Ok(raw.decode_u64())
+}
+
+/// Check for an error from the result of a syscall which encodes a file
+/// descriptor on success.
+///
+/// # Safety
+///
+/// This must only be used with syscalls which return file descriptors on
+/// success.
+#[inline]
+pub(in crate::imp) unsafe fn try_decode_raw_fd<Num: RetNumber>(
+    raw: RetReg<Num>,
+) -> io::Result<RawFd> {
+    // Instead of using `check_result` here, we just check for negative, since
+    // this function is only used for system calls which return file
+    // descriptors, and this produces smaller code.
+    if raw.is_negative() {
+        debug_assert!(raw.is_in_range(-4095..0));
+
+        // Tell the optimizer that we know the value is in the error range.
+        // This helps it avoid unnecessary integer conversions.
+        #[cfg(core_intrinsics)]
+        {
+            core::intrinsics::assume(raw.is_in_range(-4095..0));
+        }
+
+        return Err(Errno(raw.decode_error_code()));
+    }
+
+    Ok(raw.decode_raw_fd())
+}
+
+/// Check for an error from the result of a syscall which encodes no value on
+/// success. On success, return the unconsumed `raw` value.
+///
+/// # Safety
+///
+/// This must only be used with syscalls which return no value on success.
+#[inline]
+pub(in crate::imp) unsafe fn try_decode_void<Num: RetNumber>(raw: RetReg<Num>) -> io::Result<()> {
+    // Instead of using `check_result` here, we just check for zero, since this
+    // function is only used for system calls which have no other return value,
+    // and this produces smaller code.
+    if raw.is_nonzero() {
+        debug_assert!(raw.is_in_range(-4095..0));
+
+        // Tell the optimizer that we know the value is in the error range.
+        // This helps it avoid unnecessary integer conversions.
+        #[cfg(core_intrinsics)]
+        {
+            core::intrinsics::assume(raw.is_in_range(-4095..0));
+        }
+
+        return Err(Errno(raw.decode_error_code()));
+    }
+
+    raw.decode_void();
+
+    Ok(())
+}
+
+/// Check for an error from the result of a syscall which does not return on
+/// success. On success, return the unconsumed `raw` value.
+///
+/// # Safety
+///
+/// This must only be used with syscalls which do not return on success.
+#[cfg(feature = "runtime")]
+#[inline]
+pub(in crate::imp) unsafe fn try_decode_error<Num: RetNumber>(raw: RetReg<Num>) -> io::Errno {
+    debug_assert!(raw.is_in_range(-4095..0));
+
+    // Tell the optimizer that we know the value is in the error range.
+    // This helps it avoid unnecessary integer conversions.
+    #[cfg(core_intrinsics)]
+    {
+        core::intrinsics::assume(raw.is_in_range(-4095..0));
+    }
+
+    Errno(raw.decode_error_code())
+}
+
+/// Return the contained `usize` value.
+#[cfg(not(debug_assertions))]
+#[inline]
+pub(in crate::imp) fn decode_usize_infallible<Num: RetNumber>(raw: RetReg<Num>) -> usize {
+    raw.decode_usize()
+}
+
+impl Errno {
+    /// `EACCES`
+    #[doc(alias = "ACCES")]
+    pub const ACCESS: Self = Self::from_errno(errno::EACCES);
+    /// `EADDRINUSE`
+    pub const ADDRINUSE: Self = Self::from_errno(errno::EADDRINUSE);
+    /// `EADDRNOTAVAIL`
+    pub const ADDRNOTAVAIL: Self = Self::from_errno(errno::EADDRNOTAVAIL);
+    /// `EADV`
+    pub const ADV: Self = Self::from_errno(errno::EADV);
+    /// `EAFNOSUPPORT`
+    pub const AFNOSUPPORT: Self = Self::from_errno(errno::EAFNOSUPPORT);
+    /// `EAGAIN`
+    pub const AGAIN: Self = Self::from_errno(errno::EAGAIN);
+    /// `EALREADY`
+    pub const ALREADY: Self = Self::from_errno(errno::EALREADY);
+    /// `EBADE`
+    pub const BADE: Self = Self::from_errno(errno::EBADE);
+    /// `EBADF`
+    pub const BADF: Self = Self::from_errno(errno::EBADF);
+    /// `EBADFD`
+    pub const BADFD: Self = Self::from_errno(errno::EBADFD);
+    /// `EBADMSG`
+    pub const BADMSG: Self = Self::from_errno(errno::EBADMSG);
+    /// `EBADR`
+    pub const BADR: Self = Self::from_errno(errno::EBADR);
+    /// `EBADRQC`
+    pub const BADRQC: Self = Self::from_errno(errno::EBADRQC);
+    /// `EBADSLT`
+    pub const BADSLT: Self = Self::from_errno(errno::EBADSLT);
+    /// `EBFONT`
+    pub const BFONT: Self = Self::from_errno(errno::EBFONT);
+    /// `EBUSY`
+    pub const BUSY: Self = Self::from_errno(errno::EBUSY);
+    /// `ECANCELED`
+    pub const CANCELED: Self = Self::from_errno(errno::ECANCELED);
+    /// `ECHILD`
+    pub const CHILD: Self = Self::from_errno(errno::ECHILD);
+    /// `ECHRNG`
+    pub const CHRNG: Self = Self::from_errno(errno::ECHRNG);
+    /// `ECOMM`
+    pub const COMM: Self = Self::from_errno(errno::ECOMM);
+    /// `ECONNABORTED`
+    pub const CONNABORTED: Self = Self::from_errno(errno::ECONNABORTED);
+    /// `ECONNREFUSED`
+    pub const CONNREFUSED: Self = Self::from_errno(errno::ECONNREFUSED);
+    /// `ECONNRESET`
+    pub const CONNRESET: Self = Self::from_errno(errno::ECONNRESET);
+    /// `EDEADLK`
+    pub const DEADLK: Self = Self::from_errno(errno::EDEADLK);
+    /// `EDEADLOCK`
+    pub const DEADLOCK: Self = Self::from_errno(errno::EDEADLOCK);
+    /// `EDESTADDRREQ`
+    pub const DESTADDRREQ: Self = Self::from_errno(errno::EDESTADDRREQ);
+    /// `EDOM`
+    pub const DOM: Self = Self::from_errno(errno::EDOM);
+    /// `EDOTDOT`
+    pub const DOTDOT: Self = Self::from_errno(errno::EDOTDOT);
+    /// `EDQUOT`
+    pub const DQUOT: Self = Self::from_errno(errno::EDQUOT);
+    /// `EEXIST`
+    pub const EXIST: Self = Self::from_errno(errno::EEXIST);
+    /// `EFAULT`
+    pub const FAULT: Self = Self::from_errno(errno::EFAULT);
+    /// `EFBIG`
+    pub const FBIG: Self = Self::from_errno(errno::EFBIG);
+    /// `EHOSTDOWN`
+    pub const HOSTDOWN: Self = Self::from_errno(errno::EHOSTDOWN);
+    /// `EHOSTUNREACH`
+    pub const HOSTUNREACH: Self = Self::from_errno(errno::EHOSTUNREACH);
+    /// `EHWPOISON`
+    pub const HWPOISON: Self = Self::from_errno(errno::EHWPOISON);
+    /// `EIDRM`
+    pub const IDRM: Self = Self::from_errno(errno::EIDRM);
+    /// `EILSEQ`
+    pub const ILSEQ: Self = Self::from_errno(errno::EILSEQ);
+    /// `EINPROGRESS`
+    pub const INPROGRESS: Self = Self::from_errno(errno::EINPROGRESS);
+    /// `EINTR`.
+    ///
+    /// For a convenient way to retry system calls that exit with `INTR`, use
+    /// [`retry_on_intr`].
+    ///
+    /// [`retry_on_intr`]: io::retry_on_intr
+    pub const INTR: Self = Self::from_errno(errno::EINTR);
+    /// `EINVAL`
+    pub const INVAL: Self = Self::from_errno(errno::EINVAL);
+    /// `EIO`
+    pub const IO: Self = Self::from_errno(errno::EIO);
+    /// `EISCONN`
+    pub const ISCONN: Self = Self::from_errno(errno::EISCONN);
+    /// `EISDIR`
+    pub const ISDIR: Self = Self::from_errno(errno::EISDIR);
+    /// `EISNAM`
+    pub const ISNAM: Self = Self::from_errno(errno::EISNAM);
+    /// `EKEYEXPIRED`
+    pub const KEYEXPIRED: Self = Self::from_errno(errno::EKEYEXPIRED);
+    /// `EKEYREJECTED`
+    pub const KEYREJECTED: Self = Self::from_errno(errno::EKEYREJECTED);
+    /// `EKEYREVOKED`
+    pub const KEYREVOKED: Self = Self::from_errno(errno::EKEYREVOKED);
+    /// `EL2HLT`
+    pub const L2HLT: Self = Self::from_errno(errno::EL2HLT);
+    /// `EL2NSYNC`
+    pub const L2NSYNC: Self = Self::from_errno(errno::EL2NSYNC);
+    /// `EL3HLT`
+    pub const L3HLT: Self = Self::from_errno(errno::EL3HLT);
+    /// `EL3RST`
+    pub const L3RST: Self = Self::from_errno(errno::EL3RST);
+    /// `ELIBACC`
+    pub const LIBACC: Self = Self::from_errno(errno::ELIBACC);
+    /// `ELIBBAD`
+    pub const LIBBAD: Self = Self::from_errno(errno::ELIBBAD);
+    /// `ELIBEXEC`
+    pub const LIBEXEC: Self = Self::from_errno(errno::ELIBEXEC);
+    /// `ELIBMAX`
+    pub const LIBMAX: Self = Self::from_errno(errno::ELIBMAX);
+    /// `ELIBSCN`
+    pub const LIBSCN: Self = Self::from_errno(errno::ELIBSCN);
+    /// `ELNRNG`
+    pub const LNRNG: Self = Self::from_errno(errno::ELNRNG);
+    /// `ELOOP`
+    pub const LOOP: Self = Self::from_errno(errno::ELOOP);
+    /// `EMEDIUMTYPE`
+    pub const MEDIUMTYPE: Self = Self::from_errno(errno::EMEDIUMTYPE);
+    /// `EMFILE`
+    pub const MFILE: Self = Self::from_errno(errno::EMFILE);
+    /// `EMLINK`
+    pub const MLINK: Self = Self::from_errno(errno::EMLINK);
+    /// `EMSGSIZE`
+    pub const MSGSIZE: Self = Self::from_errno(errno::EMSGSIZE);
+    /// `EMULTIHOP`
+    pub const MULTIHOP: Self = Self::from_errno(errno::EMULTIHOP);
+    /// `ENAMETOOLONG`
+    pub const NAMETOOLONG: Self = Self::from_errno(errno::ENAMETOOLONG);
+    /// `ENAVAIL`
+    pub const NAVAIL: Self = Self::from_errno(errno::ENAVAIL);
+    /// `ENETDOWN`
+    pub const NETDOWN: Self = Self::from_errno(errno::ENETDOWN);
+    /// `ENETRESET`
+    pub const NETRESET: Self = Self::from_errno(errno::ENETRESET);
+    /// `ENETUNREACH`
+    pub const NETUNREACH: Self = Self::from_errno(errno::ENETUNREACH);
+    /// `ENFILE`
+    pub const NFILE: Self = Self::from_errno(errno::ENFILE);
+    /// `ENOANO`
+    pub const NOANO: Self = Self::from_errno(errno::ENOANO);
+    /// `ENOBUFS`
+    pub const NOBUFS: Self = Self::from_errno(errno::ENOBUFS);
+    /// `ENOCSI`
+    pub const NOCSI: Self = Self::from_errno(errno::ENOCSI);
+    /// `ENODATA`
+    #[doc(alias = "NOATTR")]
+    pub const NODATA: Self = Self::from_errno(errno::ENODATA);
+    /// `ENODEV`
+    pub const NODEV: Self = Self::from_errno(errno::ENODEV);
+    /// `ENOENT`
+    pub const NOENT: Self = Self::from_errno(errno::ENOENT);
+    /// `ENOEXEC`
+    pub const NOEXEC: Self = Self::from_errno(errno::ENOEXEC);
+    /// `ENOKEY`
+    pub const NOKEY: Self = Self::from_errno(errno::ENOKEY);
+    /// `ENOLCK`
+    pub const NOLCK: Self = Self::from_errno(errno::ENOLCK);
+    /// `ENOLINK`
+    pub const NOLINK: Self = Self::from_errno(errno::ENOLINK);
+    /// `ENOMEDIUM`
+    pub const NOMEDIUM: Self = Self::from_errno(errno::ENOMEDIUM);
+    /// `ENOMEM`
+    pub const NOMEM: Self = Self::from_errno(errno::ENOMEM);
+    /// `ENOMSG`
+    pub const NOMSG: Self = Self::from_errno(errno::ENOMSG);
+    /// `ENONET`
+    pub const NONET: Self = Self::from_errno(errno::ENONET);
+    /// `ENOPKG`
+    pub const NOPKG: Self = Self::from_errno(errno::ENOPKG);
+    /// `ENOPROTOOPT`
+    pub const NOPROTOOPT: Self = Self::from_errno(errno::ENOPROTOOPT);
+    /// `ENOSPC`
+    pub const NOSPC: Self = Self::from_errno(errno::ENOSPC);
+    /// `ENOSR`
+    pub const NOSR: Self = Self::from_errno(errno::ENOSR);
+    /// `ENOSTR`
+    pub const NOSTR: Self = Self::from_errno(errno::ENOSTR);
+    /// `ENOSYS`
+    pub const NOSYS: Self = Self::from_errno(errno::ENOSYS);
+    /// `ENOTBLK`
+    pub const NOTBLK: Self = Self::from_errno(errno::ENOTBLK);
+    /// `ENOTCONN`
+    pub const NOTCONN: Self = Self::from_errno(errno::ENOTCONN);
+    /// `ENOTDIR`
+    pub const NOTDIR: Self = Self::from_errno(errno::ENOTDIR);
+    /// `ENOTEMPTY`
+    pub const NOTEMPTY: Self = Self::from_errno(errno::ENOTEMPTY);
+    /// `ENOTNAM`
+    pub const NOTNAM: Self = Self::from_errno(errno::ENOTNAM);
+    /// `ENOTRECOVERABLE`
+    pub const NOTRECOVERABLE: Self = Self::from_errno(errno::ENOTRECOVERABLE);
+    /// `ENOTSOCK`
+    pub const NOTSOCK: Self = Self::from_errno(errno::ENOTSOCK);
+    /// `ENOTSUP`
+    // On Linux, `ENOTSUP` has the same value as `EOPNOTSUPP`.
+    pub const NOTSUP: Self = Self::from_errno(errno::EOPNOTSUPP);
+    /// `ENOTTY`
+    pub const NOTTY: Self = Self::from_errno(errno::ENOTTY);
+    /// `ENOTUNIQ`
+    pub const NOTUNIQ: Self = Self::from_errno(errno::ENOTUNIQ);
+    /// `ENXIO`
+    pub const NXIO: Self = Self::from_errno(errno::ENXIO);
+    /// `EOPNOTSUPP`
+    pub const OPNOTSUPP: Self = Self::from_errno(errno::EOPNOTSUPP);
+    /// `EOVERFLOW`
+    pub const OVERFLOW: Self = Self::from_errno(errno::EOVERFLOW);
+    /// `EOWNERDEAD`
+    pub const OWNERDEAD: Self = Self::from_errno(errno::EOWNERDEAD);
+    /// `EPERM`
+    pub const PERM: Self = Self::from_errno(errno::EPERM);
+    /// `EPFNOSUPPORT`
+    pub const PFNOSUPPORT: Self = Self::from_errno(errno::EPFNOSUPPORT);
+    /// `EPIPE`
+    pub const PIPE: Self = Self::from_errno(errno::EPIPE);
+    /// `EPROTO`
+    pub const PROTO: Self = Self::from_errno(errno::EPROTO);
+    /// `EPROTONOSUPPORT`
+    pub const PROTONOSUPPORT: Self = Self::from_errno(errno::EPROTONOSUPPORT);
+    /// `EPROTOTYPE`
+    pub const PROTOTYPE: Self = Self::from_errno(errno::EPROTOTYPE);
+    /// `ERANGE`
+    pub const RANGE: Self = Self::from_errno(errno::ERANGE);
+    /// `EREMCHG`
+    pub const REMCHG: Self = Self::from_errno(errno::EREMCHG);
+    /// `EREMOTE`
+    pub const REMOTE: Self = Self::from_errno(errno::EREMOTE);
+    /// `EREMOTEIO`
+    pub const REMOTEIO: Self = Self::from_errno(errno::EREMOTEIO);
+    /// `ERESTART`
+    pub const RESTART: Self = Self::from_errno(errno::ERESTART);
+    /// `ERFKILL`
+    pub const RFKILL: Self = Self::from_errno(errno::ERFKILL);
+    /// `EROFS`
+    pub const ROFS: Self = Self::from_errno(errno::EROFS);
+    /// `ESHUTDOWN`
+    pub const SHUTDOWN: Self = Self::from_errno(errno::ESHUTDOWN);
+    /// `ESOCKTNOSUPPORT`
+    pub const SOCKTNOSUPPORT: Self = Self::from_errno(errno::ESOCKTNOSUPPORT);
+    /// `ESPIPE`
+    pub const SPIPE: Self = Self::from_errno(errno::ESPIPE);
+    /// `ESRCH`
+    pub const SRCH: Self = Self::from_errno(errno::ESRCH);
+    /// `ESRMNT`
+    pub const SRMNT: Self = Self::from_errno(errno::ESRMNT);
+    /// `ESTALE`
+    pub const STALE: Self = Self::from_errno(errno::ESTALE);
+    /// `ESTRPIPE`
+    pub const STRPIPE: Self = Self::from_errno(errno::ESTRPIPE);
+    /// `ETIME`
+    pub const TIME: Self = Self::from_errno(errno::ETIME);
+    /// `ETIMEDOUT`
+    pub const TIMEDOUT: Self = Self::from_errno(errno::ETIMEDOUT);
+    /// `E2BIG`
+    #[doc(alias = "2BIG")]
+    pub const TOOBIG: Self = Self::from_errno(errno::E2BIG);
+    /// `ETOOMANYREFS`
+    pub const TOOMANYREFS: Self = Self::from_errno(errno::ETOOMANYREFS);
+    /// `ETXTBSY`
+    pub const TXTBSY: Self = Self::from_errno(errno::ETXTBSY);
+    /// `EUCLEAN`
+    pub const UCLEAN: Self = Self::from_errno(errno::EUCLEAN);
+    /// `EUNATCH`
+    pub const UNATCH: Self = Self::from_errno(errno::EUNATCH);
+    /// `EUSERS`
+    pub const USERS: Self = Self::from_errno(errno::EUSERS);
+    /// `EWOULDBLOCK`
+    pub const WOULDBLOCK: Self = Self::from_errno(errno::EWOULDBLOCK);
+    /// `EXDEV`
+    pub const XDEV: Self = Self::from_errno(errno::EXDEV);
+    /// `EXFULL`
+    pub const XFULL: Self = Self::from_errno(errno::EXFULL);
+}
diff --git a/vendor/rustix/src/imp/linux_raw/io/io_slice.rs b/vendor/rustix/src/imp/linux_raw/io/io_slice.rs
new file mode 100644
index 000000000..fc8e64698
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/io/io_slice.rs
@@ -0,0 +1,98 @@
+//! The following is derived from Rust's
+//! library/std/src/sys/unix/io.rs
+//! dca3f1b786efd27be3b325ed1e01e247aa589c3b.
+
+#![allow(unsafe_code)]
+use super::super::c;
+use core::marker::PhantomData;
+use core::slice;
+use linux_raw_sys::general::__kernel_size_t;
+
+/// <https://doc.rust-lang.org/nightly/std/io/struct.IoSlice.html>
+#[derive(Copy, Clone)]
+#[repr(transparent)]
+pub struct IoSlice<'a> {
+    vec: c::iovec,
+    _p: PhantomData<&'a [u8]>,
+}
+
+impl<'a> IoSlice<'a> {
+    /// <https://doc.rust-lang.org/nightly/std/io/struct.IoSlice.html#method.new>
+    #[inline]
+    pub fn new(buf: &'a [u8]) -> IoSlice<'a> {
+        IoSlice {
+            vec: c::iovec {
+                iov_base: buf.as_ptr() as *mut u8 as *mut c::c_void,
+                iov_len: buf.len() as _,
+            },
+            _p: PhantomData,
+        }
+    }
+
+    /// <https://doc.rust-lang.org/nightly/std/io/struct.IoSlice.html#method.advance>
+    #[inline]
+    pub fn advance(&mut self, n: usize) {
+        if self.vec.iov_len < n as _ {
+            panic!("advancing IoSlice beyond its length");
+        }
+
+        unsafe {
+            self.vec.iov_len -= n as __kernel_size_t;
+            self.vec.iov_base = self.vec.iov_base.add(n);
+        }
+    }
+
+    /// <https://doc.rust-lang.org/nightly/std/io/struct.IoSlice.html#method.as_slice>
+    #[inline]
+    pub fn as_slice(&self) -> &[u8] {
+        unsafe { slice::from_raw_parts(self.vec.iov_base as *mut u8, self.vec.iov_len as usize) }
+    }
+}
+
+/// <https://doc.rust-lang.org/nightly/std/io/struct.IoSliceMut.html>
+#[repr(transparent)]
+pub struct IoSliceMut<'a> {
+    vec: c::iovec,
+    _p: PhantomData<&'a mut [u8]>,
+}
+
+impl<'a> IoSliceMut<'a> {
+    /// <https://doc.rust-lang.org/nightly/std/io/struct.IoSliceMut.html#method.new>
+    #[inline]
+    pub fn new(buf: &'a mut [u8]) -> IoSliceMut<'a> {
+        IoSliceMut {
+            vec: c::iovec {
+                iov_base: buf.as_mut_ptr() as *mut c::c_void,
+                iov_len: buf.len() as _,
+            },
+            _p: PhantomData,
+        }
+    }
+
+    /// <https://doc.rust-lang.org/nightly/std/io/struct.IoSliceMut.html#method.advance>
+    #[inline]
+    pub fn advance(&mut self, n: usize) {
+        if self.vec.iov_len < n as _ {
+            panic!("advancing IoSliceMut beyond its length");
+        }
+
+        unsafe {
+            self.vec.iov_len -= n as __kernel_size_t;
+            self.vec.iov_base = self.vec.iov_base.add(n);
+        }
+    }
+
+    /// <https://doc.rust-lang.org/nightly/std/io/struct.IoSliceMut.html#method.as_slice>
+    #[inline]
+    pub fn as_slice(&self) -> &[u8] {
+        unsafe { slice::from_raw_parts(self.vec.iov_base as *mut u8, self.vec.iov_len as usize) }
+    }
+
+    /// <https://doc.rust-lang.org/nightly/std/io/struct.IoSliceMut.html#method.as_slice_mut>
+    #[inline]
+    pub fn as_mut_slice(&mut self) -> &mut [u8] {
+        unsafe {
+            slice::from_raw_parts_mut(self.vec.iov_base as *mut u8, self.vec.iov_len as usize)
+        }
+    }
+}
diff --git a/vendor/rustix/src/imp/linux_raw/io/mod.rs b/vendor/rustix/src/imp/linux_raw/io/mod.rs
new file mode 100644
index 000000000..f5c2bf3c0
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/io/mod.rs
@@ -0,0 +1,7 @@
+pub mod epoll;
+pub(crate) mod errno;
+#[cfg(not(feature = "std"))]
+pub(crate) mod io_slice;
+pub(crate) mod poll_fd;
+pub(crate) mod syscalls;
+pub(crate) mod types;
diff --git a/vendor/rustix/src/imp/linux_raw/io/poll_fd.rs b/vendor/rustix/src/imp/linux_raw/io/poll_fd.rs
new file mode 100644
index 000000000..252358331
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/io/poll_fd.rs
@@ -0,0 +1,93 @@
+use crate::fd::{AsFd, BorrowedFd};
+use bitflags::bitflags;
+
+bitflags! {
+    /// `POLL*` flags for use with [`poll`].
+    ///
+    /// [`poll`]: crate::io::poll
+    pub struct PollFlags: u16 {
+        /// `POLLIN`
+        const IN = linux_raw_sys::general::POLLIN as u16;
+        /// `POLLPRI`
+        const PRI = linux_raw_sys::general::POLLPRI as u16;
+        /// `POLLOUT`
+        const OUT = linux_raw_sys::general::POLLOUT as u16;
+        /// `POLLRDNORM`
+        const RDNORM = linux_raw_sys::general::POLLRDNORM as u16;
+        /// `POLLWRNORM`
+        const WRNORM = linux_raw_sys::general::POLLWRNORM as u16;
+        /// `POLLRDBAND`
+        const RDBAND = linux_raw_sys::general::POLLRDBAND as u16;
+        /// `POLLWRBAND`
+        const WRBAND = linux_raw_sys::general::POLLWRBAND as u16;
+        /// `POLLERR`
+        const ERR = linux_raw_sys::general::POLLERR as u16;
+        /// `POLLHUP`
+        const HUP = linux_raw_sys::general::POLLHUP as u16;
+        /// `POLLNVAL`
+        const NVAL = linux_raw_sys::general::POLLNVAL as u16;
+        /// `POLLRDHUP`
+        const RDHUP = linux_raw_sys::general::POLLRDHUP as u16;
+    }
+}
+
+/// `struct pollfd`—File descriptor and flags for use with [`poll`].
+///
+/// [`poll`]: crate::io::poll
+#[doc(alias = "pollfd")]
+#[repr(C)]
+#[derive(Debug, Clone)]
+pub struct PollFd<'fd> {
+    pub(crate) fd: BorrowedFd<'fd>,
+    pub(crate) events: u16,
+    pub(crate) revents: u16,
+}
+
+impl<'fd> PollFd<'fd> {
+    /// Constructs a new `PollFd` holding `fd` and `events`.
+    #[inline]
+    pub fn new<Fd: AsFd>(fd: &'fd Fd, events: PollFlags) -> Self {
+        Self::from_borrowed_fd(fd.as_fd(), events)
+    }
+
+    /// Sets the contained file descriptor to `fd`.
+    #[inline]
+    pub fn set_fd<Fd: AsFd>(&mut self, fd: &'fd Fd) {
+        self.fd = fd.as_fd();
+    }
+
+    /// Clears the ready events.
+    #[inline]
+    pub fn clear_revents(&mut self) {
+        self.revents = 0;
+    }
+
+    /// Constructs a new `PollFd` holding `fd` and `events`.
+    ///
+    /// This is the same as `new`, but can be used to avoid borrowing the
+    /// `BorrowedFd`, which can be tricky in situations where the `BorrowedFd`
+    /// is a temporary.
+    #[inline]
+    pub fn from_borrowed_fd(fd: BorrowedFd<'fd>, events: PollFlags) -> Self {
+        Self {
+            fd,
+            events: events.bits(),
+            revents: 0,
+        }
+    }
+
+    /// Returns the ready events.
+    #[inline]
+    pub fn revents(&self) -> PollFlags {
+        // Use `unwrap()` here because in theory we know we know all the bits
+        // the OS might set here, but OS's have added extensions in the past.
+        PollFlags::from_bits(self.revents).unwrap()
+    }
+}
+
+impl<'fd> AsFd for PollFd<'fd> {
+    #[inline]
+    fn as_fd(&self) -> BorrowedFd<'_> {
+        self.fd.as_fd()
+    }
+}
diff --git a/vendor/rustix/src/imp/linux_raw/io/syscalls.rs b/vendor/rustix/src/imp/linux_raw/io/syscalls.rs
new file mode 100644
index 000000000..7857859de
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/io/syscalls.rs
@@ -0,0 +1,560 @@
+//! linux_raw syscalls supporting `rustix::io`.
+//!
+//! # Safety
+//!
+//! See the `rustix::imp` module documentation for details.
+#![allow(unsafe_code)]
+#![allow(clippy::undocumented_unsafe_blocks)]
+
+use super::super::c;
+#[cfg(target_pointer_width = "64")]
+use super::super::conv::loff_t_from_u64;
+use super::super::conv::{
+    by_ref, c_int, c_uint, pass_usize, raw_fd, ret, ret_discarded_fd, ret_owned_fd, ret_usize,
+    slice, slice_mut, zero,
+};
+#[cfg(target_pointer_width = "32")]
+use super::super::conv::{hi, lo};
+use crate::fd::{AsFd, BorrowedFd, RawFd};
+use crate::io::{
+    self, epoll, DupFlags, EventfdFlags, IoSlice, IoSliceMut, OwnedFd, PipeFlags, PollFd,
+    ReadWriteFlags,
+};
+#[cfg(feature = "net")]
+use crate::net::{RecvFlags, SendFlags};
+use core::cmp;
+use core::mem::MaybeUninit;
+use linux_raw_sys::general::{
+    epoll_event, EPOLL_CTL_ADD, EPOLL_CTL_DEL, EPOLL_CTL_MOD, UIO_MAXIOV,
+};
+use linux_raw_sys::ioctl::{BLKPBSZGET, BLKSSZGET, FIONBIO, FIONREAD, TIOCEXCL, TIOCNXCL};
+#[cfg(any(target_arch = "aarch64", target_arch = "riscv64"))]
+use {
+    super::super::conv::{opt_ref, size_of},
+    linux_raw_sys::general::{__kernel_timespec, sigset_t},
+};
+
+#[inline]
+pub(crate) fn read(fd: BorrowedFd<'_>, buf: &mut [u8]) -> io::Result<usize> {
+    let (buf_addr_mut, buf_len) = slice_mut(buf);
+
+    unsafe { ret_usize(syscall!(__NR_read, fd, buf_addr_mut, buf_len)) }
+}
+
+#[inline]
+pub(crate) fn pread(fd: BorrowedFd<'_>, buf: &mut [u8], pos: u64) -> io::Result<usize> {
+    let (buf_addr_mut, buf_len) = slice_mut(buf);
+
+    // <https://github.com/torvalds/linux/blob/fcadab740480e0e0e9fa9bd272acd409884d431a/arch/arm64/kernel/sys32.c#L75>
+    #[cfg(all(
+        target_pointer_width = "32",
+        any(target_arch = "arm", target_arch = "mips", target_arch = "power"),
+    ))]
+    unsafe {
+        ret_usize(syscall!(
+            __NR_pread64,
+            fd,
+            buf_addr_mut,
+            buf_len,
+            zero(),
+            hi(pos),
+            lo(pos)
+        ))
+    }
+    #[cfg(all(
+        target_pointer_width = "32",
+        not(any(target_arch = "arm", target_arch = "mips", target_arch = "power")),
+    ))]
+    unsafe {
+        ret_usize(syscall!(
+            __NR_pread64,
+            fd,
+            buf_addr_mut,
+            buf_len,
+            hi(pos),
+            lo(pos)
+        ))
+    }
+    #[cfg(target_pointer_width = "64")]
+    unsafe {
+        ret_usize(syscall!(
+            __NR_pread64,
+            fd,
+            buf_addr_mut,
+            buf_len,
+            loff_t_from_u64(pos)
+        ))
+    }
+}
+
+#[inline]
+pub(crate) fn readv(fd: BorrowedFd<'_>, bufs: &mut [IoSliceMut<'_>]) -> io::Result<usize> {
+    let (bufs_addr, bufs_len) = slice(&bufs[..cmp::min(bufs.len(), max_iov())]);
+
+    unsafe { ret_usize(syscall!(__NR_readv, fd, bufs_addr, bufs_len)) }
+}
+
+#[inline]
+pub(crate) fn preadv(
+    fd: BorrowedFd<'_>,
+    bufs: &mut [IoSliceMut<'_>],
+    pos: u64,
+) -> io::Result<usize> {
+    let (bufs_addr, bufs_len) = slice(&bufs[..cmp::min(bufs.len(), max_iov())]);
+
+    #[cfg(target_pointer_width = "32")]
+    unsafe {
+        ret_usize(syscall!(
+            __NR_preadv,
+            fd,
+            bufs_addr,
+            bufs_len,
+            hi(pos),
+            lo(pos)
+        ))
+    }
+    #[cfg(target_pointer_width = "64")]
+    unsafe {
+        ret_usize(syscall!(
+            __NR_preadv,
+            fd,
+            bufs_addr,
+            bufs_len,
+            loff_t_from_u64(pos)
+        ))
+    }
+}
+
+#[inline]
+pub(crate) fn preadv2(
+    fd: BorrowedFd<'_>,
+    bufs: &mut [IoSliceMut<'_>],
+    pos: u64,
+    flags: ReadWriteFlags,
+) -> io::Result<usize> {
+    let (bufs_addr, bufs_len) = slice(&bufs[..cmp::min(bufs.len(), max_iov())]);
+
+    #[cfg(target_pointer_width = "32")]
+    unsafe {
+        ret_usize(syscall!(
+            __NR_preadv2,
+            fd,
+            bufs_addr,
+            bufs_len,
+            hi(pos),
+            lo(pos),
+            flags
+        ))
+    }
+    #[cfg(target_pointer_width = "64")]
+    unsafe {
+        ret_usize(syscall!(
+            __NR_preadv2,
+            fd,
+            bufs_addr,
+            bufs_len,
+            loff_t_from_u64(pos),
+            flags
+        ))
+    }
+}
+
+#[inline]
+pub(crate) fn write(fd: BorrowedFd<'_>, buf: &[u8]) -> io::Result<usize> {
+    let (buf_addr, buf_len) = slice(buf);
+
+    unsafe { ret_usize(syscall_readonly!(__NR_write, fd, buf_addr, buf_len)) }
+}
+
+#[inline]
+pub(crate) fn pwrite(fd: BorrowedFd<'_>, buf: &[u8], pos: u64) -> io::Result<usize> {
+    let (buf_addr, buf_len) = slice(buf);
+
+    // <https://github.com/torvalds/linux/blob/fcadab740480e0e0e9fa9bd272acd409884d431a/arch/arm64/kernel/sys32.c#L81-L83>
+    #[cfg(all(
+        target_pointer_width = "32",
+        any(target_arch = "arm", target_arch = "mips", target_arch = "power"),
+    ))]
+    unsafe {
+        ret_usize(syscall_readonly!(
+            __NR_pwrite64,
+            fd,
+            buf_addr,
+            buf_len,
+            zero(),
+            hi(pos),
+            lo(pos)
+        ))
+    }
+    #[cfg(all(
+        target_pointer_width = "32",
+        not(any(target_arch = "arm", target_arch = "mips", target_arch = "power")),
+    ))]
+    unsafe {
+        ret_usize(syscall_readonly!(
+            __NR_pwrite64,
+            fd,
+            buf_addr,
+            buf_len,
+            hi(pos),
+            lo(pos)
+        ))
+    }
+    #[cfg(target_pointer_width = "64")]
+    unsafe {
+        ret_usize(syscall_readonly!(
+            __NR_pwrite64,
+            fd,
+            buf_addr,
+            buf_len,
+            loff_t_from_u64(pos)
+        ))
+    }
+}
+
+#[inline]
+pub(crate) fn writev(fd: BorrowedFd<'_>, bufs: &[IoSlice<'_>]) -> io::Result<usize> {
+    let (bufs_addr, bufs_len) = slice(&bufs[..cmp::min(bufs.len(), max_iov())]);
+
+    unsafe { ret_usize(syscall_readonly!(__NR_writev, fd, bufs_addr, bufs_len)) }
+}
+
+#[inline]
+pub(crate) fn pwritev(fd: BorrowedFd<'_>, bufs: &[IoSlice<'_>], pos: u64) -> io::Result<usize> {
+    let (bufs_addr, bufs_len) = slice(&bufs[..cmp::min(bufs.len(), max_iov())]);
+
+    #[cfg(target_pointer_width = "32")]
+    unsafe {
+        ret_usize(syscall_readonly!(
+            __NR_pwritev,
+            fd,
+            bufs_addr,
+            bufs_len,
+            hi(pos),
+            lo(pos)
+        ))
+    }
+    #[cfg(target_pointer_width = "64")]
+    unsafe {
+        ret_usize(syscall_readonly!(
+            __NR_pwritev,
+            fd,
+            bufs_addr,
+            bufs_len,
+            loff_t_from_u64(pos)
+        ))
+    }
+}
+
+#[inline]
+pub(crate) fn pwritev2(
+    fd: BorrowedFd<'_>,
+    bufs: &[IoSlice<'_>],
+    pos: u64,
+    flags: ReadWriteFlags,
+) -> io::Result<usize> {
+    let (bufs_addr, bufs_len) = slice(&bufs[..cmp::min(bufs.len(), max_iov())]);
+
+    #[cfg(target_pointer_width = "32")]
+    unsafe {
+        ret_usize(syscall_readonly!(
+            __NR_pwritev2,
+            fd,
+            bufs_addr,
+            bufs_len,
+            hi(pos),
+            lo(pos),
+            flags
+        ))
+    }
+    #[cfg(target_pointer_width = "64")]
+    unsafe {
+        ret_usize(syscall_readonly!(
+            __NR_pwritev2,
+            fd,
+            bufs_addr,
+            bufs_len,
+            loff_t_from_u64(pos),
+            flags
+        ))
+    }
+}
+
+/// The maximum number of buffers that can be passed into a vectored I/O system
+/// call on the current platform.
+const fn max_iov() -> usize {
+    UIO_MAXIOV as usize
+}
+
+#[inline]
+pub(crate) unsafe fn close(fd: RawFd) {
+    // See the documentation for [`io::close`] for why errors are ignored.
+    syscall_readonly!(__NR_close, raw_fd(fd)).decode_void();
+}
+
+#[inline]
+pub(crate) fn eventfd(initval: u32, flags: EventfdFlags) -> io::Result<OwnedFd> {
+    unsafe { ret_owned_fd(syscall_readonly!(__NR_eventfd2, c_uint(initval), flags)) }
+}
+
+#[inline]
+pub(crate) fn ioctl_fionread(fd: BorrowedFd<'_>) -> io::Result<u64> {
+    unsafe {
+        let mut result = MaybeUninit::<c::c_int>::uninit();
+        ret(syscall!(__NR_ioctl, fd, c_uint(FIONREAD), &mut result))
+            .map(|()| result.assume_init() as u64)
+    }
+}
+
+#[inline]
+pub(crate) fn ioctl_fionbio(fd: BorrowedFd<'_>, value: bool) -> io::Result<()> {
+    unsafe {
+        let data = c::c_int::from(value);
+        ret(syscall_readonly!(
+            __NR_ioctl,
+            fd,
+            c_uint(FIONBIO),
+            by_ref(&data)
+        ))
+    }
+}
+
+#[inline]
+pub(crate) fn ioctl_tiocexcl(fd: BorrowedFd<'_>) -> io::Result<()> {
+    unsafe { ret(syscall_readonly!(__NR_ioctl, fd, c_uint(TIOCEXCL))) }
+}
+
+#[inline]
+pub(crate) fn ioctl_tiocnxcl(fd: BorrowedFd<'_>) -> io::Result<()> {
+    unsafe { ret(syscall_readonly!(__NR_ioctl, fd, c_uint(TIOCNXCL))) }
+}
+
+#[inline]
+pub(crate) fn ioctl_blksszget(fd: BorrowedFd) -> io::Result<u32> {
+    let mut result = MaybeUninit::<c::c_uint>::uninit();
+    unsafe {
+        ret(syscall!(__NR_ioctl, fd, c_uint(BLKSSZGET), &mut result))
+            .map(|()| result.assume_init() as u32)
+    }
+}
+
+#[inline]
+pub(crate) fn ioctl_blkpbszget(fd: BorrowedFd) -> io::Result<u32> {
+    let mut result = MaybeUninit::<c::c_uint>::uninit();
+    unsafe {
+        ret(syscall!(__NR_ioctl, fd, c_uint(BLKPBSZGET), &mut result))
+            .map(|()| result.assume_init() as u32)
+    }
+}
+
+#[cfg(feature = "net")]
+pub(crate) fn is_read_write(fd: BorrowedFd<'_>) -> io::Result<(bool, bool)> {
+    let (mut read, mut write) = crate::fs::fd::_is_file_read_write(fd)?;
+    let mut not_socket = false;
+    if read {
+        // Do a `recv` with `PEEK` and `DONTWAIT` for 1 byte. A 0 indicates
+        // the read side is shut down; an `EWOULDBLOCK` indicates the read
+        // side is still open.
+        //
+        // TODO: This code would benefit from having a better way to read into
+        // uninitialized memory.
+        let mut buf = [0];
+        match super::super::net::syscalls::recv(fd, &mut buf, RecvFlags::PEEK | RecvFlags::DONTWAIT)
+        {
+            Ok(0) => read = false,
+            Err(err) => {
+                #[allow(unreachable_patterns)] // `EAGAIN` may equal `EWOULDBLOCK`
+                match err {
+                    io::Errno::AGAIN | io::Errno::WOULDBLOCK => (),
+                    io::Errno::NOTSOCK => not_socket = true,
+                    _ => return Err(err),
+                }
+            }
+            Ok(_) => (),
+        }
+    }
+    if write && !not_socket {
+        // Do a `send` with `DONTWAIT` for 0 bytes. An `EPIPE` indicates
+        // the write side is shut down.
+        #[allow(unreachable_patterns)] // `EAGAIN` equals `EWOULDBLOCK`
+        match super::super::net::syscalls::send(fd, &[], SendFlags::DONTWAIT) {
+            // TODO or-patterns when we don't need 1.51
+            Err(io::Errno::AGAIN) => (),
+            Err(io::Errno::WOULDBLOCK) => (),
+            Err(io::Errno::NOTSOCK) => (),
+            Err(io::Errno::PIPE) => write = false,
+            Err(err) => return Err(err),
+            Ok(_) => (),
+        }
+    }
+    Ok((read, write))
+}
+
+#[inline]
+pub(crate) fn dup(fd: BorrowedFd<'_>) -> io::Result<OwnedFd> {
+    unsafe { ret_owned_fd(syscall_readonly!(__NR_dup, fd)) }
+}
+
+#[inline]
+pub(crate) fn dup2(fd: BorrowedFd<'_>, new: &mut OwnedFd) -> io::Result<()> {
+    #[cfg(any(target_arch = "aarch64", target_arch = "riscv64"))]
+    {
+        // We don't need to worry about the difference between `dup2` and
+        // `dup3` when the file descriptors are equal because we have an
+        // `&mut OwnedFd` which means `fd` doesn't alias it.
+        dup3(fd, new, DupFlags::empty())
+    }
+
+    #[cfg(not(any(target_arch = "aarch64", target_arch = "riscv64")))]
+    unsafe {
+        ret_discarded_fd(syscall_readonly!(__NR_dup2, fd, new.as_fd()))
+    }
+}
+
+#[inline]
+pub(crate) fn dup3(fd: BorrowedFd<'_>, new: &mut OwnedFd, flags: DupFlags) -> io::Result<()> {
+    unsafe { ret_discarded_fd(syscall_readonly!(__NR_dup3, fd, new.as_fd(), flags)) }
+}
+
+#[inline]
+pub(crate) fn pipe_with(flags: PipeFlags) -> io::Result<(OwnedFd, OwnedFd)> {
+    unsafe {
+        let mut result = MaybeUninit::<[OwnedFd; 2]>::uninit();
+        ret(syscall!(__NR_pipe2, &mut result, flags))?;
+        let [p0, p1] = result.assume_init();
+        Ok((p0, p1))
+    }
+}
+
+#[inline]
+pub(crate) fn pipe() -> io::Result<(OwnedFd, OwnedFd)> {
+    // aarch64 and risc64 omit `__NR_pipe`. On mips, `__NR_pipe` uses a special
+    // calling convention, but using it is not worth complicating our syscall
+    // wrapping infrastructure at this time.
+    #[cfg(any(
+        target_arch = "aarch64",
+        target_arch = "mips",
+        target_arch = "mips64",
+        target_arch = "riscv64",
+    ))]
+    {
+        pipe_with(PipeFlags::empty())
+    }
+    #[cfg(not(any(
+        target_arch = "aarch64",
+        target_arch = "mips",
+        target_arch = "mips64",
+        target_arch = "riscv64",
+    )))]
+    unsafe {
+        let mut result = MaybeUninit::<[OwnedFd; 2]>::uninit();
+        ret(syscall!(__NR_pipe, &mut result))?;
+        let [p0, p1] = result.assume_init();
+        Ok((p0, p1))
+    }
+}
+
+#[inline]
+pub(crate) fn poll(fds: &mut [PollFd<'_>], timeout: c::c_int) -> io::Result<usize> {
+    let (fds_addr_mut, fds_len) = slice_mut(fds);
+
+    #[cfg(any(target_arch = "aarch64", target_arch = "riscv64"))]
+    unsafe {
+        let timeout = if timeout >= 0 {
+            Some(__kernel_timespec {
+                tv_sec: (timeout as i64) / 1000,
+                tv_nsec: (timeout as i64) % 1000 * 1_000_000,
+            })
+        } else {
+            None
+        };
+        ret_usize(syscall!(
+            __NR_ppoll,
+            fds_addr_mut,
+            fds_len,
+            opt_ref(timeout.as_ref()),
+            zero(),
+            size_of::<sigset_t, _>()
+        ))
+    }
+    #[cfg(not(any(target_arch = "aarch64", target_arch = "riscv64")))]
+    unsafe {
+        ret_usize(syscall!(__NR_poll, fds_addr_mut, fds_len, c_int(timeout)))
+    }
+}
+
+#[inline]
+pub(crate) fn epoll_create(flags: epoll::CreateFlags) -> io::Result<OwnedFd> {
+    unsafe { ret_owned_fd(syscall_readonly!(__NR_epoll_create1, flags)) }
+}
+
+#[inline]
+pub(crate) unsafe fn epoll_add(
+    epfd: BorrowedFd<'_>,
+    fd: c::c_int,
+    event: &epoll_event,
+) -> io::Result<()> {
+    ret(syscall_readonly!(
+        __NR_epoll_ctl,
+        epfd,
+        c_uint(EPOLL_CTL_ADD),
+        raw_fd(fd),
+        by_ref(event)
+    ))
+}
+
+#[inline]
+pub(crate) unsafe fn epoll_mod(
+    epfd: BorrowedFd<'_>,
+    fd: c::c_int,
+    event: &epoll_event,
+) -> io::Result<()> {
+    ret(syscall_readonly!(
+        __NR_epoll_ctl,
+        epfd,
+        c_uint(EPOLL_CTL_MOD),
+        raw_fd(fd),
+        by_ref(event)
+    ))
+}
+
+#[inline]
+pub(crate) unsafe fn epoll_del(epfd: BorrowedFd<'_>, fd: c::c_int) -> io::Result<()> {
+    ret(syscall_readonly!(
+        __NR_epoll_ctl,
+        epfd,
+        c_uint(EPOLL_CTL_DEL),
+        raw_fd(fd),
+        zero()
+    ))
+}
+
+#[inline]
+pub(crate) fn epoll_wait(
+    epfd: BorrowedFd<'_>,
+    events: *mut epoll_event,
+    num_events: usize,
+    timeout: c::c_int,
+) -> io::Result<usize> {
+    #[cfg(not(any(target_arch = "aarch64", target_arch = "riscv64")))]
+    unsafe {
+        ret_usize(syscall!(
+            __NR_epoll_wait,
+            epfd,
+            events,
+            pass_usize(num_events),
+            c_int(timeout)
+        ))
+    }
+    #[cfg(any(target_arch = "aarch64", target_arch = "riscv64"))]
+    unsafe {
+        ret_usize(syscall!(
+            __NR_epoll_pwait,
+            epfd,
+            events,
+            pass_usize(num_events),
+            c_int(timeout),
+            zero()
+        ))
+    }
+}
diff --git a/vendor/rustix/src/imp/linux_raw/io/types.rs b/vendor/rustix/src/imp/linux_raw/io/types.rs
new file mode 100644
index 000000000..282a23aa1
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/io/types.rs
@@ -0,0 +1,67 @@
+use super::super::c;
+use bitflags::bitflags;
+
+bitflags! {
+    /// `RWF_*` constants for use with [`preadv2`] and [`pwritev2`].
+    ///
+    /// [`preadv2`]: crate::io::preadv2
+    /// [`pwritev2`]: crate::io::pwritev
+    pub struct ReadWriteFlags: c::c_uint {
+        /// `RWF_DSYNC` (since Linux 4.7)
+        const DSYNC = linux_raw_sys::general::RWF_DSYNC;
+        /// `RWF_HIPRI` (since Linux 4.6)
+        const HIPRI = linux_raw_sys::general::RWF_HIPRI;
+        /// `RWF_SYNC` (since Linux 4.7)
+        const SYNC = linux_raw_sys::general::RWF_SYNC;
+        /// `RWF_NOWAIT` (since Linux 4.14)
+        const NOWAIT = linux_raw_sys::general::RWF_NOWAIT;
+        /// `RWF_APPEND` (since Linux 4.16)
+        const APPEND = linux_raw_sys::general::RWF_APPEND;
+    }
+}
+
+bitflags! {
+    /// `O_*` constants for use with [`dup2`].
+    ///
+    /// [`dup2`]: crate::io::dup2
+    pub struct DupFlags: c::c_uint {
+        /// `O_CLOEXEC`
+        const CLOEXEC = linux_raw_sys::general::O_CLOEXEC;
+    }
+}
+
+bitflags! {
+    /// `O_*` constants for use with [`pipe_with`].
+    ///
+    /// [`pipe_with`]: crate::io::pipe_with
+    pub struct PipeFlags: c::c_uint {
+        /// `O_CLOEXEC`
+        const CLOEXEC = linux_raw_sys::general::O_CLOEXEC;
+        /// `O_DIRECT`
+        const DIRECT = linux_raw_sys::general::O_DIRECT;
+        /// `O_NONBLOCK`
+        const NONBLOCK = linux_raw_sys::general::O_NONBLOCK;
+    }
+}
+
+bitflags! {
+    /// `EFD_*` flags for use with [`eventfd`].
+    ///
+    /// [`eventfd`]: crate::io::eventfd
+    pub struct EventfdFlags: c::c_uint {
+        /// `EFD_CLOEXEC`
+        const CLOEXEC = linux_raw_sys::general::EFD_CLOEXEC;
+        /// `EFD_NONBLOCK`
+        const NONBLOCK = linux_raw_sys::general::EFD_NONBLOCK;
+        /// `EFD_SEMAPHORE`
+        const SEMAPHORE = linux_raw_sys::general::EFD_SEMAPHORE;
+    }
+}
+
+/// `PIPE_BUF`—The maximum size of a write to a pipe guaranteed to be atomic.
+pub const PIPE_BUF: usize = linux_raw_sys::general::PIPE_BUF as usize;
+
+pub(crate) const AT_FDCWD: c::c_int = linux_raw_sys::general::AT_FDCWD;
+pub(crate) const STDIN_FILENO: c::c_uint = linux_raw_sys::general::STDIN_FILENO;
+pub(crate) const STDOUT_FILENO: c::c_uint = linux_raw_sys::general::STDOUT_FILENO;
+pub(crate) const STDERR_FILENO: c::c_uint = linux_raw_sys::general::STDERR_FILENO;
diff --git a/vendor/rustix/src/imp/linux_raw/io_uring/mod.rs b/vendor/rustix/src/imp/linux_raw/io_uring/mod.rs
new file mode 100644
index 000000000..ef944f04d
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/io_uring/mod.rs
@@ -0,0 +1 @@
+pub(crate) mod syscalls;
diff --git a/vendor/rustix/src/imp/linux_raw/io_uring/syscalls.rs b/vendor/rustix/src/imp/linux_raw/io_uring/syscalls.rs
new file mode 100644
index 000000000..812568efc
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/io_uring/syscalls.rs
@@ -0,0 +1,64 @@
+//! linux_raw syscalls supporting `rustix::io_uring`.
+//!
+//! # Safety
+//!
+//! See the `rustix::imp::syscalls` module documentation for details.
+#![allow(unsafe_code)]
+#![allow(clippy::undocumented_unsafe_blocks)]
+
+use super::super::conv::{by_mut, c_uint, pass_usize, ret, ret_c_uint, ret_owned_fd};
+use crate::fd::BorrowedFd;
+use crate::io;
+use crate::io::OwnedFd;
+use crate::io_uring::{io_uring_params, IoringEnterFlags, IoringRegisterOp};
+use core::ffi::c_void;
+
+#[inline]
+pub(crate) fn io_uring_setup(entries: u32, params: &mut io_uring_params) -> io::Result<OwnedFd> {
+    unsafe {
+        ret_owned_fd(syscall!(
+            __NR_io_uring_setup,
+            c_uint(entries),
+            by_mut(params)
+        ))
+    }
+}
+
+#[inline]
+pub(crate) unsafe fn io_uring_register(
+    fd: BorrowedFd<'_>,
+    opcode: IoringRegisterOp,
+    arg: *const c_void,
+    nr_args: u32,
+) -> io::Result<()> {
+    ret(syscall_readonly!(
+        __NR_io_uring_register,
+        fd,
+        c_uint(opcode as u32),
+        arg,
+        c_uint(nr_args)
+    ))
+}
+
+#[inline]
+pub(crate) unsafe fn io_uring_enter(
+    fd: BorrowedFd<'_>,
+    to_submit: u32,
+    min_complete: u32,
+    flags: IoringEnterFlags,
+    arg: *const c_void,
+    size: usize,
+) -> io::Result<u32> {
+    // This is not `_readonly` because `io_uring_enter` waits for I/O to
+    // complete, and I/O could involve writing to memory buffers, which
+    // could be a side effect depended on by the caller.
+    ret_c_uint(syscall!(
+        __NR_io_uring_enter,
+        fd,
+        c_uint(to_submit),
+        c_uint(min_complete),
+        flags,
+        arg,
+        pass_usize(size)
+    ))
+}
diff --git a/vendor/rustix/src/imp/linux_raw/mm/mod.rs b/vendor/rustix/src/imp/linux_raw/mm/mod.rs
new file mode 100644
index 000000000..1e0181a99
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/mm/mod.rs
@@ -0,0 +1,2 @@
+pub(crate) mod syscalls;
+pub(crate) mod types;
diff --git a/vendor/rustix/src/imp/linux_raw/mm/syscalls.rs b/vendor/rustix/src/imp/linux_raw/mm/syscalls.rs
new file mode 100644
index 000000000..8b230be3d
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/mm/syscalls.rs
@@ -0,0 +1,214 @@
+//! linux_raw syscalls supporting `rustix::io`.
+//!
+//! # Safety
+//!
+//! See the `rustix::imp` module documentation for details.
+#![allow(unsafe_code)]
+#![allow(clippy::undocumented_unsafe_blocks)]
+
+use super::super::c;
+#[cfg(target_pointer_width = "64")]
+use super::super::conv::loff_t_from_u64;
+use super::super::conv::{c_uint, no_fd, pass_usize, ret, ret_owned_fd, ret_void_star};
+use super::types::{
+    Advice, MapFlags, MlockFlags, MprotectFlags, MremapFlags, MsyncFlags, ProtFlags,
+    UserfaultfdFlags,
+};
+use crate::fd::BorrowedFd;
+use crate::io::{self, OwnedFd};
+#[cfg(target_pointer_width = "32")]
+use core::convert::TryInto;
+use linux_raw_sys::general::MAP_ANONYMOUS;
+
+#[inline]
+pub(crate) fn madvise(addr: *mut c::c_void, len: usize, advice: Advice) -> io::Result<()> {
+    unsafe {
+        ret(syscall!(
+            __NR_madvise,
+            addr,
+            pass_usize(len),
+            c_uint(advice as c::c_uint)
+        ))
+    }
+}
+
+#[inline]
+pub(crate) unsafe fn msync(addr: *mut c::c_void, len: usize, flags: MsyncFlags) -> io::Result<()> {
+    ret(syscall!(__NR_msync, addr, pass_usize(len), flags))
+}
+
+/// # Safety
+///
+/// `mmap` is primarily unsafe due to the `addr` parameter, as anything working
+/// with memory pointed to by raw pointers is unsafe.
+#[inline]
+pub(crate) unsafe fn mmap(
+    addr: *mut c::c_void,
+    length: usize,
+    prot: ProtFlags,
+    flags: MapFlags,
+    fd: BorrowedFd<'_>,
+    offset: u64,
+) -> io::Result<*mut c::c_void> {
+    #[cfg(target_pointer_width = "32")]
+    {
+        ret_void_star(syscall!(
+            __NR_mmap2,
+            addr,
+            pass_usize(length),
+            prot,
+            flags,
+            fd,
+            (offset / 4096)
+                .try_into()
+                .map(|scaled_offset| pass_usize(scaled_offset))
+                .map_err(|_| io::Errno::INVAL)?
+        ))
+    }
+    #[cfg(target_pointer_width = "64")]
+    {
+        ret_void_star(syscall!(
+            __NR_mmap,
+            addr,
+            pass_usize(length),
+            prot,
+            flags,
+            fd,
+            loff_t_from_u64(offset)
+        ))
+    }
+}
+
+/// # Safety
+///
+/// `mmap` is primarily unsafe due to the `addr` parameter, as anything working
+/// with memory pointed to by raw pointers is unsafe.
+#[inline]
+pub(crate) unsafe fn mmap_anonymous(
+    addr: *mut c::c_void,
+    length: usize,
+    prot: ProtFlags,
+    flags: MapFlags,
+) -> io::Result<*mut c::c_void> {
+    #[cfg(target_pointer_width = "32")]
+    {
+        ret_void_star(syscall!(
+            __NR_mmap2,
+            addr,
+            pass_usize(length),
+            prot,
+            c_uint(flags.bits() | MAP_ANONYMOUS),
+            no_fd(),
+            pass_usize(0)
+        ))
+    }
+    #[cfg(target_pointer_width = "64")]
+    {
+        ret_void_star(syscall!(
+            __NR_mmap,
+            addr,
+            pass_usize(length),
+            prot,
+            c_uint(flags.bits() | MAP_ANONYMOUS),
+            no_fd(),
+            loff_t_from_u64(0)
+        ))
+    }
+}
+
+#[inline]
+pub(crate) unsafe fn mprotect(
+    ptr: *mut c::c_void,
+    len: usize,
+    flags: MprotectFlags,
+) -> io::Result<()> {
+    ret(syscall!(__NR_mprotect, ptr, pass_usize(len), flags))
+}
+
+/// # Safety
+///
+/// `munmap` is primarily unsafe due to the `addr` parameter, as anything
+/// working with memory pointed to by raw pointers is unsafe.
+#[inline]
+pub(crate) unsafe fn munmap(addr: *mut c::c_void, length: usize) -> io::Result<()> {
+    ret(syscall!(__NR_munmap, addr, pass_usize(length)))
+}
+
+/// # Safety
+///
+/// `mremap` is primarily unsafe due to the `old_address` parameter, as
+/// anything working with memory pointed to by raw pointers is unsafe.
+#[inline]
+pub(crate) unsafe fn mremap(
+    old_address: *mut c::c_void,
+    old_size: usize,
+    new_size: usize,
+    flags: MremapFlags,
+) -> io::Result<*mut c::c_void> {
+    ret_void_star(syscall!(
+        __NR_mremap,
+        old_address,
+        pass_usize(old_size),
+        pass_usize(new_size),
+        flags
+    ))
+}
+
+/// # Safety
+///
+/// `mremap_fixed` is primarily unsafe due to the `old_address` and
+/// `new_address` parameters, as anything working with memory pointed to by raw
+/// pointers is unsafe.
+#[inline]
+pub(crate) unsafe fn mremap_fixed(
+    old_address: *mut c::c_void,
+    old_size: usize,
+    new_size: usize,
+    flags: MremapFlags,
+    new_address: *mut c::c_void,
+) -> io::Result<*mut c::c_void> {
+    ret_void_star(syscall!(
+        __NR_mremap,
+        old_address,
+        pass_usize(old_size),
+        pass_usize(new_size),
+        flags,
+        new_address
+    ))
+}
+
+/// # Safety
+///
+/// `mlock` operates on raw pointers and may round out to the nearest page
+/// boundaries.
+#[inline]
+pub(crate) unsafe fn mlock(addr: *mut c::c_void, length: usize) -> io::Result<()> {
+    ret(syscall!(__NR_mlock, addr, pass_usize(length)))
+}
+
+/// # Safety
+///
+/// `mlock_with` operates on raw pointers and may round out to the nearest page
+/// boundaries.
+#[inline]
+pub(crate) unsafe fn mlock_with(
+    addr: *mut c::c_void,
+    length: usize,
+    flags: MlockFlags,
+) -> io::Result<()> {
+    ret(syscall!(__NR_mlock2, addr, pass_usize(length), flags))
+}
+
+/// # Safety
+///
+/// `munlock` operates on raw pointers and may round out to the nearest page
+/// boundaries.
+#[inline]
+pub(crate) unsafe fn munlock(addr: *mut c::c_void, length: usize) -> io::Result<()> {
+    ret(syscall!(__NR_munlock, addr, pass_usize(length)))
+}
+
+#[inline]
+pub(crate) unsafe fn userfaultfd(flags: UserfaultfdFlags) -> io::Result<OwnedFd> {
+    ret_owned_fd(syscall_readonly!(__NR_userfaultfd, flags))
+}
diff --git a/vendor/rustix/src/imp/linux_raw/mm/types.rs b/vendor/rustix/src/imp/linux_raw/mm/types.rs
new file mode 100644
index 000000000..a58dd76be
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/mm/types.rs
@@ -0,0 +1,208 @@
+use super::super::c;
+use bitflags::bitflags;
+
+bitflags! {
+    /// `PROT_*` flags for use with [`mmap`].
+    ///
+    /// For `PROT_NONE`, use `ProtFlags::empty()`.
+    ///
+    /// [`mmap`]: crate::io::mmap
+    pub struct ProtFlags: u32 {
+        /// `PROT_READ`
+        const READ = linux_raw_sys::general::PROT_READ;
+        /// `PROT_WRITE`
+        const WRITE = linux_raw_sys::general::PROT_WRITE;
+        /// `PROT_EXEC`
+        const EXEC = linux_raw_sys::general::PROT_EXEC;
+    }
+}
+
+bitflags! {
+    /// `PROT_*` flags for use with [`mprotect`].
+    ///
+    /// For `PROT_NONE`, use `MprotectFlags::empty()`.
+    ///
+    /// [`mprotect`]: crate::io::mprotect
+    pub struct MprotectFlags: u32 {
+        /// `PROT_READ`
+        const READ = linux_raw_sys::general::PROT_READ;
+        /// `PROT_WRITE`
+        const WRITE = linux_raw_sys::general::PROT_WRITE;
+        /// `PROT_EXEC`
+        const EXEC = linux_raw_sys::general::PROT_EXEC;
+        /// `PROT_GROWSUP`
+        const GROWSUP = linux_raw_sys::general::PROT_GROWSUP;
+        /// `PROT_GROWSDOWN`
+        const GROWSDOWN = linux_raw_sys::general::PROT_GROWSDOWN;
+    }
+}
+
+bitflags! {
+    /// `MAP_*` flags for use with [`mmap`].
+    ///
+    /// For `MAP_ANONYMOUS` (aka `MAP_ANON`), see [`mmap_anonymous`].
+    ///
+    /// [`mmap`]: crate::io::mmap
+    /// [`mmap_anonymous`]: crates::io::mmap_anonymous
+    pub struct MapFlags: u32 {
+        /// `MAP_SHARED`
+        const SHARED = linux_raw_sys::general::MAP_SHARED;
+        /// `MAP_SHARED_VALIDATE` (since Linux 4.15)
+        const SHARED_VALIDATE = linux_raw_sys::general::MAP_SHARED_VALIDATE;
+        /// `MAP_PRIVATE`
+        const PRIVATE = linux_raw_sys::general::MAP_PRIVATE;
+        /// `MAP_DENYWRITE`
+        const DENYWRITE = linux_raw_sys::general::MAP_DENYWRITE;
+        /// `MAP_FIXED`
+        const FIXED = linux_raw_sys::general::MAP_FIXED;
+        /// `MAP_FIXED_NOREPLACE` (since Linux 4.17)
+        const FIXED_NOREPLACE = linux_raw_sys::general::MAP_FIXED_NOREPLACE;
+        /// `MAP_GROWSDOWN`
+        const GROWSDOWN = linux_raw_sys::general::MAP_GROWSDOWN;
+        /// `MAP_HUGETLB`
+        const HUGETLB = linux_raw_sys::general::MAP_HUGETLB;
+        /// `MAP_HUGE_2MB` (since Linux 3.8)
+        const HUGE_2MB = linux_raw_sys::general::MAP_HUGE_2MB;
+        /// `MAP_HUGE_1GB` (since Linux 3.8)
+        const HUGE_1GB = linux_raw_sys::general::MAP_HUGE_1GB;
+        /// `MAP_LOCKED`
+        const LOCKED = linux_raw_sys::general::MAP_LOCKED;
+        /// `MAP_NORESERVE`
+        const NORESERVE = linux_raw_sys::general::MAP_NORESERVE;
+        /// `MAP_POPULATE`
+        const POPULATE = linux_raw_sys::general::MAP_POPULATE;
+        /// `MAP_STACK`
+        const STACK = linux_raw_sys::general::MAP_STACK;
+        /// `MAP_SYNC` (since Linux 4.15)
+        #[cfg(not(any(target_arch = "mips", target_arch = "mips64")))]
+        const SYNC = linux_raw_sys::general::MAP_SYNC;
+        /// `MAP_UNINITIALIZED`
+        #[cfg(not(any(target_arch = "mips", target_arch = "mips64")))]
+        const UNINITIALIZED = linux_raw_sys::general::MAP_UNINITIALIZED;
+    }
+}
+
+bitflags! {
+    /// `MREMAP_*` flags for use with [`mremap`].
+    ///
+    /// For `MREMAP_FIXED`, see [`mremap_fixed`].
+    ///
+    /// [`mremap`]: crate::io::mremap
+    /// [`mremap_fixed`]: crate::io::mremap_fixed
+    pub struct MremapFlags: u32 {
+        /// `MREMAP_MAYMOVE`
+        const MAYMOVE = linux_raw_sys::general::MREMAP_MAYMOVE;
+        /// `MREMAP_DONTUNMAP` (since Linux 5.7)
+        const DONTUNMAP = linux_raw_sys::general::MREMAP_DONTUNMAP;
+    }
+}
+
+bitflags! {
+    /// `MLOCK_*` flags for use with [`mlock_with`].
+    ///
+    /// [`mlock_with`]: crate::io::mlock_with
+    pub struct MlockFlags: u32 {
+        /// `MLOCK_ONFAULT`
+        const ONFAULT = linux_raw_sys::general::MLOCK_ONFAULT;
+    }
+}
+
+bitflags! {
+    /// `MS_*` flags for use with [`msync`].
+    ///
+    /// [`msync`]: crate::io::msync
+    pub struct MsyncFlags: u32 {
+        /// `MS_SYNC`—Requests an update and waits for it to complete.
+        const SYNC = linux_raw_sys::general::MS_SYNC;
+        /// `MS_ASYNC`—Specifies that an update be scheduled, but the call
+        /// returns immediately.
+        const ASYNC = linux_raw_sys::general::MS_ASYNC;
+        /// `MS_INVALIDATE`—Asks to invalidate other mappings of the same
+        /// file (so that they can be updated with the fresh values just
+        /// written).
+        const INVALIDATE = linux_raw_sys::general::MS_INVALIDATE;
+    }
+}
+
+bitflags! {
+    /// `O_*` flags for use with [`userfaultfd`].
+    ///
+    /// [`userfaultfd`]: crate::io::userfaultfd
+    pub struct UserfaultfdFlags: c::c_uint {
+        /// `O_CLOEXEC`
+        const CLOEXEC = linux_raw_sys::general::O_CLOEXEC;
+        /// `O_NONBLOCK`
+        const NONBLOCK = linux_raw_sys::general::O_NONBLOCK;
+    }
+}
+
+/// `POSIX_MADV_*` constants for use with [`madvise`].
+///
+/// [`madvise`]: crate::mm::madvise
+#[derive(Debug, Copy, Clone, Eq, PartialEq)]
+#[repr(u32)]
+#[non_exhaustive]
+pub enum Advice {
+    /// `POSIX_MADV_NORMAL`
+    Normal = linux_raw_sys::general::MADV_NORMAL,
+
+    /// `POSIX_MADV_SEQUENTIAL`
+    Sequential = linux_raw_sys::general::MADV_SEQUENTIAL,
+
+    /// `POSIX_MADV_RANDOM`
+    Random = linux_raw_sys::general::MADV_RANDOM,
+
+    /// `POSIX_MADV_WILLNEED`
+    WillNeed = linux_raw_sys::general::MADV_WILLNEED,
+
+    /// `MADV_DONTNEED`
+    LinuxDontNeed = linux_raw_sys::general::MADV_DONTNEED,
+
+    /// `MADV_FREE` (since Linux 4.5)
+    LinuxFree = linux_raw_sys::general::MADV_FREE,
+    /// `MADV_REMOVE`
+    LinuxRemove = linux_raw_sys::general::MADV_REMOVE,
+    /// `MADV_DONTFORK`
+    LinuxDontFork = linux_raw_sys::general::MADV_DONTFORK,
+    /// `MADV_DOFORK`
+    LinuxDoFork = linux_raw_sys::general::MADV_DOFORK,
+    /// `MADV_HWPOISON`
+    LinuxHwPoison = linux_raw_sys::general::MADV_HWPOISON,
+    /// `MADV_SOFT_OFFLINE`
+    #[cfg(not(any(target_arch = "mips", target_arch = "mips64")))]
+    LinuxSoftOffline = linux_raw_sys::general::MADV_SOFT_OFFLINE,
+    /// `MADV_MERGEABLE`
+    LinuxMergeable = linux_raw_sys::general::MADV_MERGEABLE,
+    /// `MADV_UNMERGEABLE`
+    LinuxUnmergeable = linux_raw_sys::general::MADV_UNMERGEABLE,
+    /// `MADV_HUGEPAGE` (since Linux 2.6.38)
+    LinuxHugepage = linux_raw_sys::general::MADV_HUGEPAGE,
+    /// `MADV_NOHUGEPAGE` (since Linux 2.6.38)
+    LinuxNoHugepage = linux_raw_sys::general::MADV_NOHUGEPAGE,
+    /// `MADV_DONTDUMP` (since Linux 3.4)
+    LinuxDontDump = linux_raw_sys::general::MADV_DONTDUMP,
+    /// `MADV_DODUMP` (since Linux 3.4)
+    LinuxDoDump = linux_raw_sys::general::MADV_DODUMP,
+    /// `MADV_WIPEONFORK` (since Linux 4.14)
+    LinuxWipeOnFork = linux_raw_sys::general::MADV_WIPEONFORK,
+    /// `MADV_KEEPONFORK` (since Linux 4.14)
+    LinuxKeepOnFork = linux_raw_sys::general::MADV_KEEPONFORK,
+    /// `MADV_COLD` (since Linux 5.4)
+    LinuxCold = linux_raw_sys::general::MADV_COLD,
+    /// `MADV_PAGEOUT` (since Linux 5.4)
+    LinuxPageOut = linux_raw_sys::general::MADV_PAGEOUT,
+    /// `MADV_POPULATE_READ` (since Linux 5.14)
+    LinuxPopulateRead = linux_raw_sys::general::MADV_POPULATE_READ,
+    /// `MADV_POPULATE_WRITE` (since Linux 5.14)
+    LinuxPopulateWrite = linux_raw_sys::general::MADV_POPULATE_WRITE,
+}
+
+impl Advice {
+    /// `POSIX_MADV_DONTNEED`
+    ///
+    /// On Linux, this is mapped to `POSIX_MADV_NORMAL` because
+    /// Linux's `MADV_DONTNEED` differs from `POSIX_MADV_DONTNEED`. See
+    /// `LinuxDontNeed` for the Linux behavior.
+    #[allow(non_upper_case_globals)]
+    pub const DontNeed: Self = Self::Normal;
+}
diff --git a/vendor/rustix/src/imp/linux_raw/mod.rs b/vendor/rustix/src/imp/linux_raw/mod.rs
new file mode 100644
index 000000000..ed46eaad1
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/mod.rs
@@ -0,0 +1,68 @@
+//! The linux_raw backend.
+//!
+//! This makes Linux syscalls directly, without going through libc.
+//!
+//! # Safety
+//!
+//! These files performs raw system calls, and sometimes passes them
+//! uninitialized memory buffers. The signatures in this file are currently
+//! manually maintained and must correspond with the signatures of the actual
+//! Linux syscalls.
+//!
+//! Some of this could be auto-generated from the Linux header file
+//! <linux/syscalls.h>, but we often need more information than it provides,
+//! such as which pointers are array slices, out parameters, or in-out
+//! parameters, which integers are owned or borrowed file descriptors, etc.
+
+#[macro_use]
+mod arch;
+mod conv;
+mod elf;
+mod reg;
+#[cfg(any(feature = "time", target_arch = "x86"))]
+mod vdso;
+#[cfg(any(feature = "time", target_arch = "x86"))]
+mod vdso_wrappers;
+
+#[cfg(any(
+    feature = "param",
+    feature = "runtime",
+    feature = "time",
+    target_arch = "x86",
+))]
+pub(crate) mod param;
+// #[cfg(feature = "fs")] // TODO: Enable once `OwnedFd` moves out of the tree.
+pub(crate) mod fs;
+pub(crate) mod io;
+#[cfg(feature = "io_uring")]
+#[cfg_attr(doc_cfg, doc(cfg(feature = "io_uring")))]
+pub(crate) mod io_uring;
+#[cfg(any(feature = "mm", feature = "time", target_arch = "x86"))] // vdso.rs uses `madvise`
+pub(crate) mod mm;
+#[cfg(feature = "net")]
+pub(crate) mod net;
+pub(crate) mod process;
+#[cfg(feature = "rand")]
+pub(crate) mod rand;
+#[cfg(feature = "runtime")]
+pub(crate) mod runtime;
+#[cfg(feature = "termios")]
+pub(crate) mod termios;
+#[cfg(feature = "thread")]
+pub(crate) mod thread;
+pub(crate) mod time;
+
+#[cfg(feature = "std")]
+pub(crate) mod fd {
+    pub use io_lifetimes::*;
+    #[allow(unused_imports)]
+    pub(crate) use std::os::unix::io::RawFd as LibcFd;
+    pub use std::os::unix::io::{AsRawFd, FromRawFd, IntoRawFd, RawFd};
+}
+
+#[cfg(not(feature = "std"))]
+pub(crate) use crate::io::fd;
+
+// The linux_raw backend doesn't use actual libc, so we define selected
+// libc-like definitions in a module called `c`.
+pub(crate) mod c;
diff --git a/vendor/rustix/src/imp/linux_raw/net/addr.rs b/vendor/rustix/src/imp/linux_raw/net/addr.rs
new file mode 100644
index 000000000..d5683f34e
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/net/addr.rs
@@ -0,0 +1,172 @@
+//! IPv4, IPv6, and Socket addresses.
+//!
+//! # Safety
+//!
+//! Linux's IPv6 type contains a union.
+#![allow(unsafe_code)]
+
+use super::super::c;
+use crate::ffi::CStr;
+use crate::{io, path};
+use core::convert::TryInto;
+use core::{fmt, slice};
+
+/// `struct sockaddr_un`
+#[derive(Clone)]
+#[doc(alias = "sockaddr_un")]
+pub struct SocketAddrUnix {
+    pub(crate) unix: c::sockaddr_un,
+    len: c::socklen_t,
+}
+
+impl SocketAddrUnix {
+    /// Construct a new Unix-domain address from a filesystem path.
+    #[inline]
+    pub fn new<P: path::Arg>(path: P) -> io::Result<Self> {
+        path.into_with_c_str(Self::_new)
+    }
+
+    #[inline]
+    fn _new(path: &CStr) -> io::Result<Self> {
+        let mut unix = Self::init();
+        let bytes = path.to_bytes_with_nul();
+        if bytes.len() > unix.sun_path.len() {
+            return Err(io::Errno::NAMETOOLONG);
+        }
+        for (i, b) in bytes.iter().enumerate() {
+            unix.sun_path[i] = *b as c::c_char;
+        }
+        let len = offsetof_sun_path() + bytes.len();
+        let len = len.try_into().unwrap();
+        Ok(Self { unix, len })
+    }
+
+    /// Construct a new abstract Unix-domain address from a byte slice.
+    #[inline]
+    pub fn new_abstract_name(name: &[u8]) -> io::Result<Self> {
+        let mut unix = Self::init();
+        if 1 + name.len() > unix.sun_path.len() {
+            return Err(io::Errno::NAMETOOLONG);
+        }
+        unix.sun_path[0] = b'\0' as c::c_char;
+        for (i, b) in name.iter().enumerate() {
+            unix.sun_path[1 + i] = *b as c::c_char;
+        }
+        let len = offsetof_sun_path() + 1 + name.len();
+        let len = len.try_into().unwrap();
+        Ok(Self { unix, len })
+    }
+
+    fn init() -> c::sockaddr_un {
+        c::sockaddr_un {
+            sun_family: c::AF_UNIX as _,
+            sun_path: [0; 108],
+        }
+    }
+
+    /// For a filesystem path address, return the path.
+    #[inline]
+    pub fn path(&self) -> Option<&CStr> {
+        let len = self.len();
+        if len != 0 && self.unix.sun_path[0] != b'\0' as c::c_char {
+            let end = len as usize - offsetof_sun_path();
+            let bytes = &self.unix.sun_path[..end];
+            // Safety: `from_raw_parts` to convert from `&[c_char]` to `&[u8]`. And
+            // `from_bytes_with_nul_unchecked` since the string is NUL-terminated.
+            unsafe {
+                Some(CStr::from_bytes_with_nul_unchecked(slice::from_raw_parts(
+                    bytes.as_ptr().cast(),
+                    bytes.len(),
+                )))
+            }
+        } else {
+            None
+        }
+    }
+
+    /// For an abstract address, return the identifier.
+    #[inline]
+    pub fn abstract_name(&self) -> Option<&[u8]> {
+        let len = self.len();
+        if len != 0 && self.unix.sun_path[0] == b'\0' as c::c_char {
+            let end = len as usize - offsetof_sun_path();
+            let bytes = &self.unix.sun_path[1..end];
+            // Safety: `from_raw_parts` to convert from `&[c_char]` to `&[u8]`.
+            unsafe { Some(slice::from_raw_parts(bytes.as_ptr().cast(), bytes.len())) }
+        } else {
+            None
+        }
+    }
+
+    #[inline]
+    pub(crate) fn addr_len(&self) -> c::socklen_t {
+        self.len
+    }
+
+    #[inline]
+    pub(crate) fn len(&self) -> usize {
+        self.addr_len() as usize
+    }
+}
+
+impl PartialEq for SocketAddrUnix {
+    #[inline]
+    fn eq(&self, other: &Self) -> bool {
+        let self_len = self.len() - offsetof_sun_path();
+        let other_len = other.len() - offsetof_sun_path();
+        self.unix.sun_path[..self_len].eq(&other.unix.sun_path[..other_len])
+    }
+}
+
+impl Eq for SocketAddrUnix {}
+
+impl PartialOrd for SocketAddrUnix {
+    #[inline]
+    fn partial_cmp(&self, other: &Self) -> Option<core::cmp::Ordering> {
+        let self_len = self.len() - offsetof_sun_path();
+        let other_len = other.len() - offsetof_sun_path();
+        self.unix.sun_path[..self_len].partial_cmp(&other.unix.sun_path[..other_len])
+    }
+}
+
+impl Ord for SocketAddrUnix {
+    #[inline]
+    fn cmp(&self, other: &Self) -> core::cmp::Ordering {
+        let self_len = self.len() - offsetof_sun_path();
+        let other_len = other.len() - offsetof_sun_path();
+        self.unix.sun_path[..self_len].cmp(&other.unix.sun_path[..other_len])
+    }
+}
+
+impl core::hash::Hash for SocketAddrUnix {
+    #[inline]
+    fn hash<H: core::hash::Hasher>(&self, state: &mut H) {
+        let self_len = self.len() - offsetof_sun_path();
+        self.unix.sun_path[..self_len].hash(state)
+    }
+}
+
+impl fmt::Debug for SocketAddrUnix {
+    fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result {
+        if let Some(path) = self.path() {
+            path.fmt(fmt)
+        } else if let Some(name) = self.abstract_name() {
+            name.fmt(fmt)
+        } else {
+            "(unnamed)".fmt(fmt)
+        }
+    }
+}
+
+/// `struct sockaddr_storage` as a raw struct.
+pub type SocketAddrStorage = c::sockaddr;
+
+/// Return the offset of the `sun_path` field of `sockaddr_un`.
+#[inline]
+pub(crate) fn offsetof_sun_path() -> usize {
+    let z = c::sockaddr_un {
+        sun_family: 0_u16,
+        sun_path: [0; 108],
+    };
+    (crate::utils::as_ptr(&z.sun_path) as usize) - (crate::utils::as_ptr(&z) as usize)
+}
diff --git a/vendor/rustix/src/imp/linux_raw/net/ext.rs b/vendor/rustix/src/imp/linux_raw/net/ext.rs
new file mode 100644
index 000000000..8556c9d90
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/net/ext.rs
@@ -0,0 +1,64 @@
+#![allow(unsafe_code)]
+
+use super::super::c;
+
+#[inline]
+pub(crate) const fn in_addr_s_addr(addr: c::in_addr) -> u32 {
+    addr.s_addr
+}
+
+#[inline]
+pub(crate) const fn in_addr_new(s_addr: u32) -> c::in_addr {
+    c::in_addr { s_addr }
+}
+
+#[cfg(not(feature = "std"))]
+#[inline]
+pub(crate) const fn in6_addr_s6_addr(addr: c::in6_addr) -> [u8; 16] {
+    // Safety: `in6_addr` is `repr(C)` and contains plain integer data.
+    unsafe { addr.in6_u.u6_addr8 }
+}
+
+// TODO: With Rust 1.55, we can use the above `in6_addr_s6_addr` definition
+// that uses a const-fn union access instead of doing a transmute.
+#[cfg(not(not(feature = "std")))]
+#[inline]
+pub(crate) fn in6_addr_s6_addr(addr: c::in6_addr) -> [u8; 16] {
+    // Safety: `in6_addr` is `repr(C)` and contains plain integer data.
+    unsafe { core::mem::transmute(addr) }
+}
+
+#[inline]
+pub(crate) const fn in6_addr_new(s6_addr: [u8; 16]) -> c::in6_addr {
+    c::in6_addr {
+        in6_u: linux_raw_sys::general::in6_addr__bindgen_ty_1 { u6_addr8: s6_addr },
+    }
+}
+
+#[inline]
+pub(crate) const fn sockaddr_in6_sin6_scope_id(addr: c::sockaddr_in6) -> u32 {
+    addr.sin6_scope_id
+}
+
+#[cfg(not(feature = "std"))]
+#[inline]
+pub(crate) fn sockaddr_in6_sin6_scope_id_mut(addr: &mut c::sockaddr_in6) -> &mut u32 {
+    &mut addr.sin6_scope_id
+}
+
+#[inline]
+pub(crate) const fn sockaddr_in6_new(
+    sin6_family: c::sa_family_t,
+    sin6_port: u16,
+    sin6_flowinfo: u32,
+    sin6_addr: c::in6_addr,
+    sin6_scope_id: u32,
+) -> c::sockaddr_in6 {
+    c::sockaddr_in6 {
+        sin6_family,
+        sin6_port,
+        sin6_flowinfo,
+        sin6_addr,
+        sin6_scope_id,
+    }
+}
diff --git a/vendor/rustix/src/imp/linux_raw/net/mod.rs b/vendor/rustix/src/imp/linux_raw/net/mod.rs
new file mode 100644
index 000000000..5e67dfd21
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/net/mod.rs
@@ -0,0 +1,8 @@
+pub(crate) mod addr;
+#[cfg(not(feature = "std"))]
+pub(crate) mod ext;
+pub(crate) mod read_sockaddr;
+pub(crate) mod send_recv;
+pub(crate) mod syscalls;
+pub(crate) mod types;
+pub(crate) mod write_sockaddr;
diff --git a/vendor/rustix/src/imp/linux_raw/net/read_sockaddr.rs b/vendor/rustix/src/imp/linux_raw/net/read_sockaddr.rs
new file mode 100644
index 000000000..b9bc09b96
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/net/read_sockaddr.rs
@@ -0,0 +1,175 @@
+//! The BSD sockets API requires us to read the `ss_family` field before
+//! we can interpret the rest of a `sockaddr` produced by the kernel.
+#![allow(unsafe_code)]
+
+use super::super::c;
+use crate::io;
+use crate::net::{Ipv4Addr, Ipv6Addr, SocketAddrAny, SocketAddrUnix, SocketAddrV4, SocketAddrV6};
+use alloc::vec::Vec;
+use core::mem::size_of;
+
+// This must match the header of `sockaddr`.
+#[repr(C)]
+struct sockaddr_header {
+    ss_family: u16,
+}
+
+/// Read the `ss_family` field from a socket address returned from the OS.
+///
+/// # Safety
+///
+/// `storage` must point to a valid socket address returned from the OS.
+#[inline]
+unsafe fn read_ss_family(storage: *const c::sockaddr) -> u16 {
+    // Assert that we know the layout of `sockaddr`.
+    let _ = c::sockaddr {
+        __storage: c::sockaddr_storage {
+            __bindgen_anon_1: linux_raw_sys::general::__kernel_sockaddr_storage__bindgen_ty_1 {
+                __bindgen_anon_1:
+                    linux_raw_sys::general::__kernel_sockaddr_storage__bindgen_ty_1__bindgen_ty_1 {
+                        ss_family: 0_u16,
+                        __data: [0; 126_usize],
+                    },
+            },
+        },
+    };
+
+    (*storage.cast::<sockaddr_header>()).ss_family
+}
+
+/// Set the `ss_family` field of a socket address to `AF_UNSPEC`, so that we
+/// can test for `AF_UNSPEC` to test whether it was stored to.
+#[inline]
+pub(crate) unsafe fn initialize_family_to_unspec(storage: *mut c::sockaddr) {
+    (*storage.cast::<sockaddr_header>()).ss_family = c::AF_UNSPEC as _;
+}
+
+/// Read a socket address encoded in a platform-specific format.
+///
+/// # Safety
+///
+/// `storage` must point to valid socket address storage.
+pub(crate) unsafe fn read_sockaddr(
+    storage: *const c::sockaddr,
+    len: usize,
+) -> io::Result<SocketAddrAny> {
+    let offsetof_sun_path = super::addr::offsetof_sun_path();
+
+    if len < size_of::<c::sa_family_t>() {
+        return Err(io::Errno::INVAL);
+    }
+    match read_ss_family(storage).into() {
+        c::AF_INET => {
+            if len < size_of::<c::sockaddr_in>() {
+                return Err(io::Errno::INVAL);
+            }
+            let decode = *storage.cast::<c::sockaddr_in>();
+            Ok(SocketAddrAny::V4(SocketAddrV4::new(
+                Ipv4Addr::from(u32::from_be(decode.sin_addr.s_addr)),
+                u16::from_be(decode.sin_port),
+            )))
+        }
+        c::AF_INET6 => {
+            if len < size_of::<c::sockaddr_in6>() {
+                return Err(io::Errno::INVAL);
+            }
+            let decode = *storage.cast::<c::sockaddr_in6>();
+            Ok(SocketAddrAny::V6(SocketAddrV6::new(
+                Ipv6Addr::from(decode.sin6_addr.in6_u.u6_addr8),
+                u16::from_be(decode.sin6_port),
+                u32::from_be(decode.sin6_flowinfo),
+                decode.sin6_scope_id,
+            )))
+        }
+        c::AF_UNIX => {
+            if len < offsetof_sun_path {
+                return Err(io::Errno::INVAL);
+            }
+            if len == offsetof_sun_path {
+                Ok(SocketAddrAny::Unix(SocketAddrUnix::new(&[][..])?))
+            } else {
+                let decode = *storage.cast::<c::sockaddr_un>();
+                assert_eq!(
+                    decode.sun_path[len - 1 - offsetof_sun_path],
+                    b'\0' as c::c_char
+                );
+                Ok(SocketAddrAny::Unix(SocketAddrUnix::new(
+                    decode.sun_path[..len - 1 - offsetof_sun_path]
+                        .iter()
+                        .map(|c| *c as u8)
+                        .collect::<Vec<u8>>(),
+                )?))
+            }
+        }
+        _ => Err(io::Errno::NOTSUP),
+    }
+}
+
+/// Read a socket address returned from the OS.
+///
+/// # Safety
+///
+/// `storage` must point to a valid socket address returned from the OS.
+pub(crate) unsafe fn maybe_read_sockaddr_os(
+    storage: *const c::sockaddr,
+    len: usize,
+) -> Option<SocketAddrAny> {
+    if len == 0 {
+        None
+    } else {
+        Some(read_sockaddr_os(storage, len))
+    }
+}
+
+/// Read a socket address returned from the OS.
+///
+/// # Safety
+///
+/// `storage` must point to a valid socket address returned from the OS.
+pub(crate) unsafe fn read_sockaddr_os(storage: *const c::sockaddr, len: usize) -> SocketAddrAny {
+    let offsetof_sun_path = super::addr::offsetof_sun_path();
+
+    assert!(len >= size_of::<c::sa_family_t>());
+    match read_ss_family(storage).into() {
+        c::AF_INET => {
+            assert!(len >= size_of::<c::sockaddr_in>());
+            let decode = *storage.cast::<c::sockaddr_in>();
+            SocketAddrAny::V4(SocketAddrV4::new(
+                Ipv4Addr::from(u32::from_be(decode.sin_addr.s_addr)),
+                u16::from_be(decode.sin_port),
+            ))
+        }
+        c::AF_INET6 => {
+            assert!(len >= size_of::<c::sockaddr_in6>());
+            let decode = *storage.cast::<c::sockaddr_in6>();
+            SocketAddrAny::V6(SocketAddrV6::new(
+                Ipv6Addr::from(decode.sin6_addr.in6_u.u6_addr8),
+                u16::from_be(decode.sin6_port),
+                u32::from_be(decode.sin6_flowinfo),
+                decode.sin6_scope_id,
+            ))
+        }
+        c::AF_UNIX => {
+            assert!(len >= offsetof_sun_path);
+            if len == offsetof_sun_path {
+                SocketAddrAny::Unix(SocketAddrUnix::new(&[][..]).unwrap())
+            } else {
+                let decode = *storage.cast::<c::sockaddr_un>();
+                assert_eq!(
+                    decode.sun_path[len - 1 - offsetof_sun_path],
+                    b'\0' as c::c_char
+                );
+                SocketAddrAny::Unix(
+                    SocketAddrUnix::new(
+                        decode.sun_path[..len - 1 - offsetof_sun_path]
+                            .iter()
+                            .map(|c| *c as u8)
+                            .collect::<Vec<u8>>(),
+                    )
+                    .unwrap(),
+                )
+            }
+        }
+        other => unimplemented!("{:?}", other),
+    }
+}
diff --git a/vendor/rustix/src/imp/linux_raw/net/send_recv.rs b/vendor/rustix/src/imp/linux_raw/net/send_recv.rs
new file mode 100644
index 000000000..888e81e2b
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/net/send_recv.rs
@@ -0,0 +1,42 @@
+use super::super::c;
+use bitflags::bitflags;
+
+bitflags! {
+    /// `MSG_*`
+    pub struct SendFlags: u32 {
+        /// `MSG_CONFIRM`
+        const CONFIRM = c::MSG_CONFIRM;
+        /// `MSG_DONTROUTE`
+        const DONTROUTE = c::MSG_DONTROUTE;
+        /// `MSG_DONTWAIT`
+        const DONTWAIT = c::MSG_DONTWAIT;
+        /// `MSG_EOT`
+        const EOT = c::MSG_EOR;
+        /// `MSG_MORE`
+        const MORE = c::MSG_MORE;
+        /// `MSG_NOSIGNAL`
+        const NOSIGNAL = c::MSG_NOSIGNAL;
+        /// `MSG_OOB`
+        const OOB = c::MSG_OOB;
+    }
+}
+
+bitflags! {
+    /// `MSG_*`
+    pub struct RecvFlags: u32 {
+        /// `MSG_CMSG_CLOEXEC`
+        const CMSG_CLOEXEC = c::MSG_CMSG_CLOEXEC;
+        /// `MSG_DONTWAIT`
+        const DONTWAIT = c::MSG_DONTWAIT;
+        /// `MSG_ERRQUEUE`
+        const ERRQUEUE = c::MSG_ERRQUEUE;
+        /// `MSG_OOB`
+        const OOB = c::MSG_OOB;
+        /// `MSG_PEEK`
+        const PEEK = c::MSG_PEEK;
+        /// `MSG_TRUNC`
+        const TRUNC = c::MSG_TRUNC;
+        /// `MSG_WAITALL`
+        const WAITALL = c::MSG_WAITALL;
+    }
+}
diff --git a/vendor/rustix/src/imp/linux_raw/net/syscalls.rs b/vendor/rustix/src/imp/linux_raw/net/syscalls.rs
new file mode 100644
index 000000000..18a0f130d
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/net/syscalls.rs
@@ -0,0 +1,1234 @@
+//! linux_raw syscalls supporting `rustix::net`.
+//!
+//! # Safety
+//!
+//! See the `rustix::imp` module documentation for details.
+#![allow(unsafe_code)]
+#![allow(clippy::undocumented_unsafe_blocks)]
+
+use super::super::c;
+use super::super::conv::{
+    by_mut, by_ref, c_int, c_uint, ret, ret_owned_fd, ret_usize, size_of, slice, slice_mut,
+    socklen_t, zero,
+};
+use super::read_sockaddr::{initialize_family_to_unspec, maybe_read_sockaddr_os, read_sockaddr_os};
+use super::send_recv::{RecvFlags, SendFlags};
+use super::types::{AcceptFlags, AddressFamily, Protocol, Shutdown, SocketFlags, SocketType};
+use super::write_sockaddr::{encode_sockaddr_v4, encode_sockaddr_v6};
+use crate::fd::BorrowedFd;
+use crate::io::{self, OwnedFd};
+use crate::net::{SocketAddrAny, SocketAddrUnix, SocketAddrV4, SocketAddrV6};
+use c::{sockaddr, sockaddr_in, sockaddr_in6, socklen_t};
+use core::convert::TryInto;
+use core::mem::MaybeUninit;
+#[cfg(target_arch = "x86")]
+use {
+    super::super::conv::{slice_just_addr, x86_sys},
+    super::super::reg::{ArgReg, SocketArg},
+    linux_raw_sys::general::{
+        SYS_ACCEPT, SYS_ACCEPT4, SYS_BIND, SYS_CONNECT, SYS_GETPEERNAME, SYS_GETSOCKNAME,
+        SYS_GETSOCKOPT, SYS_LISTEN, SYS_RECV, SYS_RECVFROM, SYS_SEND, SYS_SENDTO, SYS_SETSOCKOPT,
+        SYS_SHUTDOWN, SYS_SOCKET, SYS_SOCKETPAIR,
+    },
+};
+
+#[inline]
+pub(crate) fn socket(
+    family: AddressFamily,
+    type_: SocketType,
+    protocol: Protocol,
+) -> io::Result<OwnedFd> {
+    #[cfg(not(target_arch = "x86"))]
+    unsafe {
+        ret_owned_fd(syscall_readonly!(__NR_socket, family, type_, protocol))
+    }
+    #[cfg(target_arch = "x86")]
+    unsafe {
+        ret_owned_fd(syscall_readonly!(
+            __NR_socketcall,
+            x86_sys(SYS_SOCKET),
+            slice_just_addr::<ArgReg<SocketArg>, _>(&[
+                family.into(),
+                type_.into(),
+                protocol.into(),
+            ])
+        ))
+    }
+}
+
+#[inline]
+pub(crate) fn socket_with(
+    family: AddressFamily,
+    type_: SocketType,
+    flags: SocketFlags,
+    protocol: Protocol,
+) -> io::Result<OwnedFd> {
+    #[cfg(not(target_arch = "x86"))]
+    unsafe {
+        ret_owned_fd(syscall_readonly!(
+            __NR_socket,
+            family,
+            (type_, flags),
+            protocol
+        ))
+    }
+    #[cfg(target_arch = "x86")]
+    unsafe {
+        ret_owned_fd(syscall_readonly!(
+            __NR_socketcall,
+            x86_sys(SYS_SOCKET),
+            slice_just_addr::<ArgReg<SocketArg>, _>(&[
+                family.into(),
+                (type_, flags).into(),
+                protocol.into(),
+            ])
+        ))
+    }
+}
+
+#[inline]
+pub(crate) fn socketpair(
+    family: AddressFamily,
+    type_: SocketType,
+    flags: SocketFlags,
+    protocol: Protocol,
+) -> io::Result<(OwnedFd, OwnedFd)> {
+    #[cfg(not(target_arch = "x86"))]
+    unsafe {
+        let mut result = MaybeUninit::<[OwnedFd; 2]>::uninit();
+        ret(syscall!(
+            __NR_socketpair,
+            family,
+            (type_, flags),
+            protocol,
+            &mut result
+        ))
+        .map(|()| {
+            let [fd0, fd1] = result.assume_init();
+            (fd0, fd1)
+        })
+    }
+    #[cfg(target_arch = "x86")]
+    unsafe {
+        let mut result = MaybeUninit::<[OwnedFd; 2]>::uninit();
+        ret(syscall!(
+            __NR_socketcall,
+            x86_sys(SYS_SOCKETPAIR),
+            slice_just_addr::<ArgReg<SocketArg>, _>(&[
+                family.into(),
+                (type_, flags).into(),
+                protocol.into(),
+                (&mut result).into(),
+            ])
+        ))
+        .map(|()| {
+            let [fd0, fd1] = result.assume_init();
+            (fd0, fd1)
+        })
+    }
+}
+
+#[inline]
+pub(crate) fn accept(fd: BorrowedFd<'_>) -> io::Result<OwnedFd> {
+    #[cfg(not(target_arch = "x86"))]
+    unsafe {
+        let fd = ret_owned_fd(syscall_readonly!(__NR_accept, fd, zero(), zero()))?;
+        Ok(fd)
+    }
+    #[cfg(target_arch = "x86")]
+    unsafe {
+        let fd = ret_owned_fd(syscall_readonly!(
+            __NR_socketcall,
+            x86_sys(SYS_ACCEPT),
+            slice_just_addr::<ArgReg<SocketArg>, _>(&[fd.into(), zero(), zero()])
+        ))?;
+        Ok(fd)
+    }
+}
+
+#[inline]
+pub(crate) fn accept_with(fd: BorrowedFd<'_>, flags: AcceptFlags) -> io::Result<OwnedFd> {
+    #[cfg(not(target_arch = "x86"))]
+    unsafe {
+        let fd = ret_owned_fd(syscall_readonly!(__NR_accept4, fd, zero(), zero(), flags))?;
+        Ok(fd)
+    }
+    #[cfg(target_arch = "x86")]
+    unsafe {
+        let fd = ret_owned_fd(syscall_readonly!(
+            __NR_socketcall,
+            x86_sys(SYS_ACCEPT4),
+            slice_just_addr::<ArgReg<SocketArg>, _>(&[fd.into(), zero(), zero(), flags.into()])
+        ))?;
+        Ok(fd)
+    }
+}
+
+#[inline]
+pub(crate) fn acceptfrom(fd: BorrowedFd<'_>) -> io::Result<(OwnedFd, Option<SocketAddrAny>)> {
+    #[cfg(not(target_arch = "x86"))]
+    unsafe {
+        let mut addrlen = core::mem::size_of::<sockaddr>() as socklen_t;
+        let mut storage = MaybeUninit::<sockaddr>::uninit();
+        let fd = ret_owned_fd(syscall!(
+            __NR_accept,
+            fd,
+            &mut storage,
+            by_mut(&mut addrlen)
+        ))?;
+        Ok((
+            fd,
+            maybe_read_sockaddr_os(&storage.assume_init(), addrlen.try_into().unwrap()),
+        ))
+    }
+    #[cfg(target_arch = "x86")]
+    unsafe {
+        let mut addrlen = core::mem::size_of::<sockaddr>() as socklen_t;
+        let mut storage = MaybeUninit::<sockaddr>::uninit();
+        let fd = ret_owned_fd(syscall!(
+            __NR_socketcall,
+            x86_sys(SYS_ACCEPT),
+            slice_just_addr::<ArgReg<SocketArg>, _>(&[
+                fd.into(),
+                (&mut storage).into(),
+                by_mut(&mut addrlen),
+            ])
+        ))?;
+        Ok((
+            fd,
+            maybe_read_sockaddr_os(&storage.assume_init(), addrlen.try_into().unwrap()),
+        ))
+    }
+}
+
+#[inline]
+pub(crate) fn acceptfrom_with(
+    fd: BorrowedFd<'_>,
+    flags: AcceptFlags,
+) -> io::Result<(OwnedFd, Option<SocketAddrAny>)> {
+    #[cfg(not(target_arch = "x86"))]
+    unsafe {
+        let mut addrlen = core::mem::size_of::<sockaddr>() as socklen_t;
+        let mut storage = MaybeUninit::<sockaddr>::uninit();
+        let fd = ret_owned_fd(syscall!(
+            __NR_accept4,
+            fd,
+            &mut storage,
+            by_mut(&mut addrlen),
+            flags
+        ))?;
+        Ok((
+            fd,
+            maybe_read_sockaddr_os(&storage.assume_init(), addrlen.try_into().unwrap()),
+        ))
+    }
+    #[cfg(target_arch = "x86")]
+    unsafe {
+        let mut addrlen = core::mem::size_of::<sockaddr>() as socklen_t;
+        let mut storage = MaybeUninit::<sockaddr>::uninit();
+        let fd = ret_owned_fd(syscall!(
+            __NR_socketcall,
+            x86_sys(SYS_ACCEPT4),
+            slice_just_addr::<ArgReg<SocketArg>, _>(&[
+                fd.into(),
+                (&mut storage).into(),
+                by_mut(&mut addrlen),
+                flags.into(),
+            ])
+        ))?;
+        Ok((
+            fd,
+            maybe_read_sockaddr_os(&storage.assume_init(), addrlen.try_into().unwrap()),
+        ))
+    }
+}
+
+#[inline]
+pub(crate) fn shutdown(fd: BorrowedFd<'_>, how: Shutdown) -> io::Result<()> {
+    #[cfg(not(target_arch = "x86"))]
+    unsafe {
+        ret(syscall_readonly!(
+            __NR_shutdown,
+            fd,
+            c_uint(how as c::c_uint)
+        ))
+    }
+    #[cfg(target_arch = "x86")]
+    unsafe {
+        ret(syscall_readonly!(
+            __NR_socketcall,
+            x86_sys(SYS_SHUTDOWN),
+            slice_just_addr::<ArgReg<SocketArg>, _>(&[fd.into(), c_uint(how as c::c_uint)])
+        ))
+    }
+}
+
+#[inline]
+pub(crate) fn send(fd: BorrowedFd<'_>, buf: &[u8], flags: SendFlags) -> io::Result<usize> {
+    let (buf_addr, buf_len) = slice(buf);
+
+    #[cfg(not(any(
+        target_arch = "aarch64",
+        target_arch = "mips64",
+        target_arch = "riscv64",
+        target_arch = "x86",
+        target_arch = "x86_64",
+    )))]
+    unsafe {
+        ret_usize(syscall_readonly!(__NR_send, fd, buf_addr, buf_len, flags))
+    }
+    #[cfg(any(
+        target_arch = "aarch64",
+        target_arch = "mips64",
+        target_arch = "riscv64",
+        target_arch = "x86_64",
+    ))]
+    unsafe {
+        ret_usize(syscall_readonly!(
+            __NR_sendto,
+            fd,
+            buf_addr,
+            buf_len,
+            flags,
+            zero(),
+            zero()
+        ))
+    }
+    #[cfg(target_arch = "x86")]
+    unsafe {
+        ret_usize(syscall_readonly!(
+            __NR_socketcall,
+            x86_sys(SYS_SEND),
+            slice_just_addr::<ArgReg<SocketArg>, _>(&[fd.into(), buf_addr, buf_len, flags.into()])
+        ))
+    }
+}
+
+#[inline]
+pub(crate) fn sendto_v4(
+    fd: BorrowedFd<'_>,
+    buf: &[u8],
+    flags: SendFlags,
+    addr: &SocketAddrV4,
+) -> io::Result<usize> {
+    let (buf_addr, buf_len) = slice(buf);
+
+    #[cfg(not(target_arch = "x86"))]
+    unsafe {
+        ret_usize(syscall_readonly!(
+            __NR_sendto,
+            fd,
+            buf_addr,
+            buf_len,
+            flags,
+            by_ref(&encode_sockaddr_v4(addr)),
+            size_of::<sockaddr_in, _>()
+        ))
+    }
+    #[cfg(target_arch = "x86")]
+    unsafe {
+        ret_usize(syscall_readonly!(
+            __NR_socketcall,
+            x86_sys(SYS_SENDTO),
+            slice_just_addr::<ArgReg<SocketArg>, _>(&[
+                fd.into(),
+                buf_addr,
+                buf_len,
+                flags.into(),
+                by_ref(&encode_sockaddr_v4(addr)),
+                size_of::<sockaddr_in, _>(),
+            ])
+        ))
+    }
+}
+
+#[inline]
+pub(crate) fn sendto_v6(
+    fd: BorrowedFd<'_>,
+    buf: &[u8],
+    flags: SendFlags,
+    addr: &SocketAddrV6,
+) -> io::Result<usize> {
+    let (buf_addr, buf_len) = slice(buf);
+
+    #[cfg(not(target_arch = "x86"))]
+    unsafe {
+        ret_usize(syscall_readonly!(
+            __NR_sendto,
+            fd,
+            buf_addr,
+            buf_len,
+            flags,
+            by_ref(&encode_sockaddr_v6(addr)),
+            size_of::<sockaddr_in6, _>()
+        ))
+    }
+    #[cfg(target_arch = "x86")]
+    unsafe {
+        ret_usize(syscall_readonly!(
+            __NR_socketcall,
+            x86_sys(SYS_SENDTO),
+            slice_just_addr::<ArgReg<SocketArg>, _>(&[
+                fd.into(),
+                buf_addr,
+                buf_len,
+                flags.into(),
+                by_ref(&encode_sockaddr_v6(addr)),
+                size_of::<sockaddr_in6, _>(),
+            ])
+        ))
+    }
+}
+
+#[inline]
+pub(crate) fn sendto_unix(
+    fd: BorrowedFd<'_>,
+    buf: &[u8],
+    flags: SendFlags,
+    addr: &SocketAddrUnix,
+) -> io::Result<usize> {
+    let (buf_addr, buf_len) = slice(buf);
+
+    #[cfg(not(target_arch = "x86"))]
+    unsafe {
+        ret_usize(syscall_readonly!(
+            __NR_sendto,
+            fd,
+            buf_addr,
+            buf_len,
+            flags,
+            by_ref(&addr.unix),
+            socklen_t(addr.addr_len())
+        ))
+    }
+    #[cfg(target_arch = "x86")]
+    unsafe {
+        ret_usize(syscall_readonly!(
+            __NR_socketcall,
+            x86_sys(SYS_SENDTO),
+            slice_just_addr::<ArgReg<SocketArg>, _>(&[
+                fd.into(),
+                buf_addr,
+                buf_len,
+                flags.into(),
+                by_ref(&addr.unix),
+                socklen_t(addr.addr_len()),
+            ])
+        ))
+    }
+}
+
+#[inline]
+pub(crate) fn recv(fd: BorrowedFd<'_>, buf: &mut [u8], flags: RecvFlags) -> io::Result<usize> {
+    let (buf_addr_mut, buf_len) = slice_mut(buf);
+
+    #[cfg(not(any(
+        target_arch = "aarch64",
+        target_arch = "mips64",
+        target_arch = "riscv64",
+        target_arch = "x86",
+        target_arch = "x86_64",
+    )))]
+    unsafe {
+        ret_usize(syscall!(__NR_recv, fd, buf_addr_mut, buf_len, flags))
+    }
+    #[cfg(any(
+        target_arch = "aarch64",
+        target_arch = "mips64",
+        target_arch = "riscv64",
+        target_arch = "x86_64",
+    ))]
+    unsafe {
+        ret_usize(syscall!(
+            __NR_recvfrom,
+            fd,
+            buf_addr_mut,
+            buf_len,
+            flags,
+            zero(),
+            zero()
+        ))
+    }
+    #[cfg(target_arch = "x86")]
+    unsafe {
+        ret_usize(syscall!(
+            __NR_socketcall,
+            x86_sys(SYS_RECV),
+            slice_just_addr::<ArgReg<SocketArg>, _>(&[
+                fd.into(),
+                buf_addr_mut,
+                buf_len,
+                flags.into(),
+            ])
+        ))
+    }
+}
+
+#[inline]
+pub(crate) fn recvfrom(
+    fd: BorrowedFd<'_>,
+    buf: &mut [u8],
+    flags: RecvFlags,
+) -> io::Result<(usize, Option<SocketAddrAny>)> {
+    let (buf_addr_mut, buf_len) = slice_mut(buf);
+
+    let mut addrlen = core::mem::size_of::<sockaddr>() as socklen_t;
+    let mut storage = MaybeUninit::<sockaddr>::uninit();
+
+    unsafe {
+        // `recvfrom` does not write to the storage if the socket is
+        // connection-oriented sockets, so we initialize the family field to
+        // `AF_UNSPEC` so that we can detect this case.
+        initialize_family_to_unspec(storage.as_mut_ptr());
+
+        #[cfg(not(target_arch = "x86"))]
+        let nread = ret_usize(syscall!(
+            __NR_recvfrom,
+            fd,
+            buf_addr_mut,
+            buf_len,
+            flags,
+            &mut storage,
+            by_mut(&mut addrlen)
+        ))?;
+        #[cfg(target_arch = "x86")]
+        let nread = ret_usize(syscall!(
+            __NR_socketcall,
+            x86_sys(SYS_RECVFROM),
+            slice_just_addr::<ArgReg<SocketArg>, _>(&[
+                fd.into(),
+                buf_addr_mut,
+                buf_len,
+                flags.into(),
+                (&mut storage).into(),
+                by_mut(&mut addrlen),
+            ])
+        ))?;
+
+        Ok((
+            nread,
+            maybe_read_sockaddr_os(&storage.assume_init(), addrlen.try_into().unwrap()),
+        ))
+    }
+}
+
+#[inline]
+pub(crate) fn getpeername(fd: BorrowedFd<'_>) -> io::Result<Option<SocketAddrAny>> {
+    #[cfg(not(target_arch = "x86"))]
+    unsafe {
+        let mut addrlen = core::mem::size_of::<sockaddr>() as socklen_t;
+        let mut storage = MaybeUninit::<sockaddr>::uninit();
+        ret(syscall!(
+            __NR_getpeername,
+            fd,
+            &mut storage,
+            by_mut(&mut addrlen)
+        ))?;
+        Ok(maybe_read_sockaddr_os(
+            &storage.assume_init(),
+            addrlen.try_into().unwrap(),
+        ))
+    }
+    #[cfg(target_arch = "x86")]
+    unsafe {
+        let mut addrlen = core::mem::size_of::<sockaddr>() as socklen_t;
+        let mut storage = MaybeUninit::<sockaddr>::uninit();
+        ret(syscall!(
+            __NR_socketcall,
+            x86_sys(SYS_GETPEERNAME),
+            slice_just_addr::<ArgReg<SocketArg>, _>(&[
+                fd.into(),
+                (&mut storage).into(),
+                by_mut(&mut addrlen),
+            ])
+        ))?;
+        Ok(maybe_read_sockaddr_os(
+            &storage.assume_init(),
+            addrlen.try_into().unwrap(),
+        ))
+    }
+}
+
+#[inline]
+pub(crate) fn getsockname(fd: BorrowedFd<'_>) -> io::Result<SocketAddrAny> {
+    #[cfg(not(target_arch = "x86"))]
+    unsafe {
+        let mut addrlen = core::mem::size_of::<sockaddr>() as socklen_t;
+        let mut storage = MaybeUninit::<sockaddr>::uninit();
+        ret(syscall!(
+            __NR_getsockname,
+            fd,
+            &mut storage,
+            by_mut(&mut addrlen)
+        ))?;
+        Ok(read_sockaddr_os(
+            &storage.assume_init(),
+            addrlen.try_into().unwrap(),
+        ))
+    }
+    #[cfg(target_arch = "x86")]
+    unsafe {
+        let mut addrlen = core::mem::size_of::<sockaddr>() as socklen_t;
+        let mut storage = MaybeUninit::<sockaddr>::uninit();
+        ret(syscall!(
+            __NR_socketcall,
+            x86_sys(SYS_GETSOCKNAME),
+            slice_just_addr::<ArgReg<SocketArg>, _>(&[
+                fd.into(),
+                (&mut storage).into(),
+                by_mut(&mut addrlen),
+            ])
+        ))?;
+        Ok(read_sockaddr_os(
+            &storage.assume_init(),
+            addrlen.try_into().unwrap(),
+        ))
+    }
+}
+
+#[inline]
+pub(crate) fn bind_v4(fd: BorrowedFd<'_>, addr: &SocketAddrV4) -> io::Result<()> {
+    #[cfg(not(target_arch = "x86"))]
+    unsafe {
+        ret(syscall_readonly!(
+            __NR_bind,
+            fd,
+            by_ref(&encode_sockaddr_v4(addr)),
+            size_of::<sockaddr_in, _>()
+        ))
+    }
+    #[cfg(target_arch = "x86")]
+    unsafe {
+        ret(syscall_readonly!(
+            __NR_socketcall,
+            x86_sys(SYS_BIND),
+            slice_just_addr::<ArgReg<SocketArg>, _>(&[
+                fd.into(),
+                by_ref(&encode_sockaddr_v4(addr)),
+                size_of::<sockaddr_in, _>(),
+            ])
+        ))
+    }
+}
+
+#[inline]
+pub(crate) fn bind_v6(fd: BorrowedFd<'_>, addr: &SocketAddrV6) -> io::Result<()> {
+    #[cfg(not(target_arch = "x86"))]
+    unsafe {
+        ret(syscall_readonly!(
+            __NR_bind,
+            fd,
+            by_ref(&encode_sockaddr_v6(addr)),
+            size_of::<sockaddr_in6, _>()
+        ))
+    }
+    #[cfg(target_arch = "x86")]
+    unsafe {
+        ret(syscall_readonly!(
+            __NR_socketcall,
+            x86_sys(SYS_BIND),
+            slice_just_addr::<ArgReg<SocketArg>, _>(&[
+                fd.into(),
+                by_ref(&encode_sockaddr_v6(addr)),
+                size_of::<sockaddr_in6, _>(),
+            ])
+        ))
+    }
+}
+
+#[inline]
+pub(crate) fn bind_unix(fd: BorrowedFd<'_>, addr: &SocketAddrUnix) -> io::Result<()> {
+    #[cfg(not(target_arch = "x86"))]
+    unsafe {
+        ret(syscall_readonly!(
+            __NR_bind,
+            fd,
+            by_ref(&addr.unix),
+            socklen_t(addr.addr_len())
+        ))
+    }
+    #[cfg(target_arch = "x86")]
+    unsafe {
+        ret(syscall_readonly!(
+            __NR_socketcall,
+            x86_sys(SYS_BIND),
+            slice_just_addr::<ArgReg<SocketArg>, _>(&[
+                fd.into(),
+                by_ref(&addr.unix),
+                socklen_t(addr.addr_len()),
+            ])
+        ))
+    }
+}
+
+#[inline]
+pub(crate) fn connect_v4(fd: BorrowedFd<'_>, addr: &SocketAddrV4) -> io::Result<()> {
+    #[cfg(not(target_arch = "x86"))]
+    unsafe {
+        ret(syscall_readonly!(
+            __NR_connect,
+            fd,
+            by_ref(&encode_sockaddr_v4(addr)),
+            size_of::<sockaddr_in, _>()
+        ))
+    }
+    #[cfg(target_arch = "x86")]
+    unsafe {
+        ret(syscall_readonly!(
+            __NR_socketcall,
+            x86_sys(SYS_CONNECT),
+            slice_just_addr::<ArgReg<SocketArg>, _>(&[
+                fd.into(),
+                by_ref(&encode_sockaddr_v4(addr)),
+                size_of::<sockaddr_in, _>(),
+            ])
+        ))
+    }
+}
+
+#[inline]
+pub(crate) fn connect_v6(fd: BorrowedFd<'_>, addr: &SocketAddrV6) -> io::Result<()> {
+    #[cfg(not(target_arch = "x86"))]
+    unsafe {
+        ret(syscall_readonly!(
+            __NR_connect,
+            fd,
+            by_ref(&encode_sockaddr_v6(addr)),
+            size_of::<sockaddr_in6, _>()
+        ))
+    }
+    #[cfg(target_arch = "x86")]
+    unsafe {
+        ret(syscall_readonly!(
+            __NR_socketcall,
+            x86_sys(SYS_CONNECT),
+            slice_just_addr::<ArgReg<SocketArg>, _>(&[
+                fd.into(),
+                by_ref(&encode_sockaddr_v6(addr)),
+                size_of::<sockaddr_in6, _>(),
+            ])
+        ))
+    }
+}
+
+#[inline]
+pub(crate) fn connect_unix(fd: BorrowedFd<'_>, addr: &SocketAddrUnix) -> io::Result<()> {
+    #[cfg(not(target_arch = "x86"))]
+    unsafe {
+        ret(syscall_readonly!(
+            __NR_connect,
+            fd,
+            by_ref(&addr.unix),
+            socklen_t(addr.addr_len())
+        ))
+    }
+    #[cfg(target_arch = "x86")]
+    unsafe {
+        ret(syscall_readonly!(
+            __NR_socketcall,
+            x86_sys(SYS_CONNECT),
+            slice_just_addr::<ArgReg<SocketArg>, _>(&[
+                fd.into(),
+                by_ref(&addr.unix),
+                socklen_t(addr.addr_len()),
+            ])
+        ))
+    }
+}
+
+#[inline]
+pub(crate) fn listen(fd: BorrowedFd<'_>, backlog: c::c_int) -> io::Result<()> {
+    #[cfg(not(target_arch = "x86"))]
+    unsafe {
+        ret(syscall_readonly!(__NR_listen, fd, c_int(backlog)))
+    }
+    #[cfg(target_arch = "x86")]
+    unsafe {
+        ret(syscall_readonly!(
+            __NR_socketcall,
+            x86_sys(SYS_LISTEN),
+            slice_just_addr::<ArgReg<SocketArg>, _>(&[fd.into(), c_int(backlog)])
+        ))
+    }
+}
+
+pub(crate) mod sockopt {
+    use super::{c, BorrowedFd};
+    use crate::io;
+    use crate::net::sockopt::Timeout;
+    use crate::net::{Ipv4Addr, Ipv6Addr, SocketType};
+    use c::{SO_RCVTIMEO_NEW, SO_RCVTIMEO_OLD, SO_SNDTIMEO_NEW, SO_SNDTIMEO_OLD};
+    use core::convert::TryInto;
+    use core::time::Duration;
+    use linux_raw_sys::general::{__kernel_timespec, timeval};
+
+    // TODO: With Rust 1.53 we can use `Duration::ZERO` instead.
+    const DURATION_ZERO: Duration = Duration::from_secs(0);
+
+    #[inline]
+    fn getsockopt<T: Copy>(fd: BorrowedFd<'_>, level: u32, optname: u32) -> io::Result<T> {
+        use super::*;
+
+        let mut optlen = core::mem::size_of::<T>();
+        debug_assert!(
+            optlen as usize >= core::mem::size_of::<c::c_int>(),
+            "Socket APIs don't ever use `bool` directly"
+        );
+
+        #[cfg(not(target_arch = "x86"))]
+        unsafe {
+            let mut value = MaybeUninit::<T>::uninit();
+            ret(syscall!(
+                __NR_getsockopt,
+                fd,
+                c_uint(level),
+                c_uint(optname),
+                &mut value,
+                by_mut(&mut optlen)
+            ))?;
+
+            assert_eq!(
+                optlen as usize,
+                core::mem::size_of::<T>(),
+                "unexpected getsockopt size"
+            );
+            Ok(value.assume_init())
+        }
+        #[cfg(target_arch = "x86")]
+        unsafe {
+            let mut value = MaybeUninit::<T>::uninit();
+            ret(syscall!(
+                __NR_socketcall,
+                x86_sys(SYS_GETSOCKOPT),
+                slice_just_addr::<ArgReg<SocketArg>, _>(&[
+                    fd.into(),
+                    c_uint(level),
+                    c_uint(optname),
+                    (&mut value).into(),
+                    by_mut(&mut optlen),
+                ])
+            ))?;
+            assert_eq!(
+                optlen as usize,
+                core::mem::size_of::<T>(),
+                "unexpected getsockopt size"
+            );
+            Ok(value.assume_init())
+        }
+    }
+
+    #[inline]
+    fn setsockopt<T: Copy>(
+        fd: BorrowedFd<'_>,
+        level: u32,
+        optname: u32,
+        value: T,
+    ) -> io::Result<()> {
+        use super::*;
+
+        let optlen = core::mem::size_of::<T>().try_into().unwrap();
+        debug_assert!(
+            optlen as usize >= core::mem::size_of::<c::c_int>(),
+            "Socket APIs don't ever use `bool` directly"
+        );
+
+        #[cfg(not(target_arch = "x86"))]
+        unsafe {
+            ret(syscall_readonly!(
+                __NR_setsockopt,
+                fd,
+                c_uint(level),
+                c_uint(optname),
+                by_ref(&value),
+                socklen_t(optlen)
+            ))
+        }
+        #[cfg(target_arch = "x86")]
+        unsafe {
+            ret(syscall_readonly!(
+                __NR_socketcall,
+                x86_sys(SYS_SETSOCKOPT),
+                slice_just_addr::<ArgReg<SocketArg>, _>(&[
+                    fd.into(),
+                    c_uint(level),
+                    c_uint(optname),
+                    by_ref(&value),
+                    socklen_t(optlen),
+                ])
+            ))
+        }
+    }
+
+    #[inline]
+    pub(crate) fn get_socket_type(fd: BorrowedFd<'_>) -> io::Result<SocketType> {
+        getsockopt(fd, c::SOL_SOCKET as _, c::SO_TYPE)
+    }
+
+    #[inline]
+    pub(crate) fn set_socket_reuseaddr(fd: BorrowedFd<'_>, reuseaddr: bool) -> io::Result<()> {
+        setsockopt(
+            fd,
+            c::SOL_SOCKET as _,
+            c::SO_REUSEADDR,
+            from_bool(reuseaddr),
+        )
+    }
+
+    #[inline]
+    pub(crate) fn set_socket_broadcast(fd: BorrowedFd<'_>, broadcast: bool) -> io::Result<()> {
+        setsockopt(
+            fd,
+            c::SOL_SOCKET as _,
+            c::SO_BROADCAST,
+            from_bool(broadcast),
+        )
+    }
+
+    #[inline]
+    pub(crate) fn get_socket_broadcast(fd: BorrowedFd<'_>) -> io::Result<bool> {
+        getsockopt(fd, c::SOL_SOCKET as _, c::SO_BROADCAST).map(to_bool)
+    }
+
+    #[inline]
+    pub(crate) fn set_socket_linger(
+        fd: BorrowedFd<'_>,
+        linger: Option<Duration>,
+    ) -> io::Result<()> {
+        // Convert `linger` to seconds, rounding up.
+        let l_linger = if let Some(linger) = linger {
+            let mut l_linger = linger.as_secs();
+            if linger.subsec_nanos() != 0 {
+                l_linger = l_linger.checked_add(1).ok_or(io::Errno::INVAL)?;
+            }
+            l_linger.try_into().map_err(|_e| io::Errno::INVAL)?
+        } else {
+            0
+        };
+        let linger = c::linger {
+            l_onoff: c::c_int::from(linger.is_some()),
+            l_linger,
+        };
+        setsockopt(fd, c::SOL_SOCKET as _, c::SO_LINGER, linger)
+    }
+
+    #[inline]
+    pub(crate) fn get_socket_linger(fd: BorrowedFd<'_>) -> io::Result<Option<Duration>> {
+        let linger: c::linger = getsockopt(fd, c::SOL_SOCKET as _, c::SO_LINGER)?;
+        // TODO: With Rust 1.50, this could use `.then`.
+        Ok(if linger.l_onoff != 0 {
+            Some(Duration::from_secs(linger.l_linger as u64))
+        } else {
+            None
+        })
+    }
+
+    #[inline]
+    pub(crate) fn set_socket_passcred(fd: BorrowedFd<'_>, passcred: bool) -> io::Result<()> {
+        setsockopt(fd, c::SOL_SOCKET as _, c::SO_PASSCRED, from_bool(passcred))
+    }
+
+    #[inline]
+    pub(crate) fn get_socket_passcred(fd: BorrowedFd<'_>) -> io::Result<bool> {
+        getsockopt(fd, c::SOL_SOCKET as _, c::SO_PASSCRED).map(to_bool)
+    }
+
+    #[inline]
+    pub(crate) fn set_socket_timeout(
+        fd: BorrowedFd<'_>,
+        id: Timeout,
+        timeout: Option<Duration>,
+    ) -> io::Result<()> {
+        let time = duration_to_linux(timeout)?;
+        let optname = match id {
+            Timeout::Recv => SO_RCVTIMEO_NEW,
+            Timeout::Send => SO_SNDTIMEO_NEW,
+        };
+        match setsockopt(fd, c::SOL_SOCKET, optname, time) {
+            Err(io::Errno::NOPROTOOPT) if SO_RCVTIMEO_NEW != SO_RCVTIMEO_OLD => {
+                set_socket_timeout_old(fd, id, timeout)
+            }
+            otherwise => otherwise,
+        }
+    }
+
+    /// Same as `set_socket_timeout` but uses `timeval` instead of
+    /// `__kernel_timespec` and `_OLD` constants instead of `_NEW`.
+    fn set_socket_timeout_old(
+        fd: BorrowedFd<'_>,
+        id: Timeout,
+        timeout: Option<Duration>,
+    ) -> io::Result<()> {
+        let time = duration_to_linux_old(timeout)?;
+        let optname = match id {
+            Timeout::Recv => SO_RCVTIMEO_OLD,
+            Timeout::Send => SO_SNDTIMEO_OLD,
+        };
+        setsockopt(fd, c::SOL_SOCKET, optname, time)
+    }
+
+    #[inline]
+    pub(crate) fn get_socket_timeout(
+        fd: BorrowedFd<'_>,
+        id: Timeout,
+    ) -> io::Result<Option<Duration>> {
+        let optname = match id {
+            Timeout::Recv => SO_RCVTIMEO_NEW,
+            Timeout::Send => SO_SNDTIMEO_NEW,
+        };
+        let time: __kernel_timespec = match getsockopt(fd, c::SOL_SOCKET, optname) {
+            Err(io::Errno::NOPROTOOPT) if SO_RCVTIMEO_NEW != SO_RCVTIMEO_OLD => {
+                return get_socket_timeout_old(fd, id)
+            }
+            otherwise => otherwise?,
+        };
+        Ok(duration_from_linux(time))
+    }
+
+    /// Same as `get_socket_timeout` but uses `timeval` instead of
+    /// `__kernel_timespec` and `_OLD` constants instead of `_NEW`.
+    fn get_socket_timeout_old(fd: BorrowedFd<'_>, id: Timeout) -> io::Result<Option<Duration>> {
+        let optname = match id {
+            Timeout::Recv => SO_RCVTIMEO_OLD,
+            Timeout::Send => SO_SNDTIMEO_OLD,
+        };
+        let time: timeval = getsockopt(fd, c::SOL_SOCKET, optname)?;
+        Ok(duration_from_linux_old(time))
+    }
+
+    /// Convert a C `timespec` to a Rust `Option<Duration>`.
+    #[inline]
+    fn duration_from_linux(time: __kernel_timespec) -> Option<Duration> {
+        if time.tv_sec == 0 && time.tv_nsec == 0 {
+            None
+        } else {
+            Some(
+                Duration::from_secs(time.tv_sec as u64) + Duration::from_nanos(time.tv_nsec as u64),
+            )
+        }
+    }
+
+    /// Like `duration_from_linux` but uses Linux's old 32-bit `timeval`.
+    fn duration_from_linux_old(time: timeval) -> Option<Duration> {
+        if time.tv_sec == 0 && time.tv_usec == 0 {
+            None
+        } else {
+            Some(
+                Duration::from_secs(time.tv_sec as u64)
+                    + Duration::from_micros(time.tv_usec as u64),
+            )
+        }
+    }
+
+    /// Convert a Rust `Option<Duration>` to a C `timespec`.
+    #[inline]
+    fn duration_to_linux(timeout: Option<Duration>) -> io::Result<__kernel_timespec> {
+        Ok(match timeout {
+            Some(timeout) => {
+                if timeout == DURATION_ZERO {
+                    return Err(io::Errno::INVAL);
+                }
+                let mut timeout = __kernel_timespec {
+                    tv_sec: timeout.as_secs().try_into().unwrap_or(i64::MAX),
+                    tv_nsec: timeout.subsec_nanos().into(),
+                };
+                if timeout.tv_sec == 0 && timeout.tv_nsec == 0 {
+                    timeout.tv_nsec = 1;
+                }
+                timeout
+            }
+            None => __kernel_timespec {
+                tv_sec: 0,
+                tv_nsec: 0,
+            },
+        })
+    }
+
+    /// Like `duration_to_linux` but uses Linux's old 32-bit `timeval`.
+    fn duration_to_linux_old(timeout: Option<Duration>) -> io::Result<timeval> {
+        Ok(match timeout {
+            Some(timeout) => {
+                if timeout == DURATION_ZERO {
+                    return Err(io::Errno::INVAL);
+                }
+
+                // `subsec_micros` rounds down, so we use `subsec_nanos` and
+                // manually round up.
+                let mut timeout = timeval {
+                    tv_sec: timeout.as_secs().try_into().unwrap_or(c::c_long::MAX),
+                    tv_usec: ((timeout.subsec_nanos() + 999) / 1000) as _,
+                };
+                if timeout.tv_sec == 0 && timeout.tv_usec == 0 {
+                    timeout.tv_usec = 1;
+                }
+                timeout
+            }
+            None => timeval {
+                tv_sec: 0,
+                tv_usec: 0,
+            },
+        })
+    }
+
+    #[inline]
+    pub(crate) fn set_ip_ttl(fd: BorrowedFd<'_>, ttl: u32) -> io::Result<()> {
+        setsockopt(fd, c::IPPROTO_IP as _, c::IP_TTL, ttl)
+    }
+
+    #[inline]
+    pub(crate) fn get_ip_ttl(fd: BorrowedFd<'_>) -> io::Result<u32> {
+        getsockopt(fd, c::IPPROTO_IP as _, c::IP_TTL)
+    }
+
+    #[inline]
+    pub(crate) fn set_ipv6_v6only(fd: BorrowedFd<'_>, only_v6: bool) -> io::Result<()> {
+        setsockopt(fd, c::IPPROTO_IPV6 as _, c::IPV6_V6ONLY, from_bool(only_v6))
+    }
+
+    #[inline]
+    pub(crate) fn get_ipv6_v6only(fd: BorrowedFd<'_>) -> io::Result<bool> {
+        getsockopt(fd, c::IPPROTO_IPV6 as _, c::IPV6_V6ONLY).map(to_bool)
+    }
+
+    #[inline]
+    pub(crate) fn set_ip_multicast_loop(
+        fd: BorrowedFd<'_>,
+        multicast_loop: bool,
+    ) -> io::Result<()> {
+        setsockopt(
+            fd,
+            c::IPPROTO_IP as _,
+            c::IP_MULTICAST_LOOP,
+            from_bool(multicast_loop),
+        )
+    }
+
+    #[inline]
+    pub(crate) fn get_ip_multicast_loop(fd: BorrowedFd<'_>) -> io::Result<bool> {
+        getsockopt(fd, c::IPPROTO_IP as _, c::IP_MULTICAST_LOOP).map(to_bool)
+    }
+
+    #[inline]
+    pub(crate) fn set_ip_multicast_ttl(fd: BorrowedFd<'_>, multicast_ttl: u32) -> io::Result<()> {
+        setsockopt(fd, c::IPPROTO_IP as _, c::IP_MULTICAST_TTL, multicast_ttl)
+    }
+
+    #[inline]
+    pub(crate) fn get_ip_multicast_ttl(fd: BorrowedFd<'_>) -> io::Result<u32> {
+        getsockopt(fd, c::IPPROTO_IP as _, c::IP_MULTICAST_TTL)
+    }
+
+    #[inline]
+    pub(crate) fn set_ipv6_multicast_loop(
+        fd: BorrowedFd<'_>,
+        multicast_loop: bool,
+    ) -> io::Result<()> {
+        setsockopt(
+            fd,
+            c::IPPROTO_IPV6 as _,
+            c::IPV6_MULTICAST_LOOP,
+            from_bool(multicast_loop),
+        )
+    }
+
+    #[inline]
+    pub(crate) fn get_ipv6_multicast_loop(fd: BorrowedFd<'_>) -> io::Result<bool> {
+        getsockopt(fd, c::IPPROTO_IPV6 as _, c::IPV6_MULTICAST_LOOP).map(to_bool)
+    }
+
+    #[inline]
+    pub(crate) fn set_ip_add_membership(
+        fd: BorrowedFd<'_>,
+        multiaddr: &Ipv4Addr,
+        interface: &Ipv4Addr,
+    ) -> io::Result<()> {
+        let mreq = to_imr(multiaddr, interface);
+        setsockopt(fd, c::IPPROTO_IP as _, c::IP_ADD_MEMBERSHIP, mreq)
+    }
+
+    #[inline]
+    pub(crate) fn set_ipv6_add_membership(
+        fd: BorrowedFd<'_>,
+        multiaddr: &Ipv6Addr,
+        interface: u32,
+    ) -> io::Result<()> {
+        let mreq = to_ipv6mr(multiaddr, interface);
+        setsockopt(fd, c::IPPROTO_IPV6 as _, c::IPV6_ADD_MEMBERSHIP, mreq)
+    }
+
+    #[inline]
+    pub(crate) fn set_ip_drop_membership(
+        fd: BorrowedFd<'_>,
+        multiaddr: &Ipv4Addr,
+        interface: &Ipv4Addr,
+    ) -> io::Result<()> {
+        let mreq = to_imr(multiaddr, interface);
+        setsockopt(fd, c::IPPROTO_IP as _, c::IP_DROP_MEMBERSHIP, mreq)
+    }
+
+    #[inline]
+    pub(crate) fn set_ipv6_drop_membership(
+        fd: BorrowedFd<'_>,
+        multiaddr: &Ipv6Addr,
+        interface: u32,
+    ) -> io::Result<()> {
+        let mreq = to_ipv6mr(multiaddr, interface);
+        setsockopt(fd, c::IPPROTO_IPV6 as _, c::IPV6_DROP_MEMBERSHIP, mreq)
+    }
+
+    #[inline]
+    pub(crate) fn set_tcp_nodelay(fd: BorrowedFd<'_>, nodelay: bool) -> io::Result<()> {
+        setsockopt(fd, c::IPPROTO_TCP as _, c::TCP_NODELAY, from_bool(nodelay))
+    }
+
+    #[inline]
+    pub(crate) fn get_tcp_nodelay(fd: BorrowedFd<'_>) -> io::Result<bool> {
+        getsockopt(fd, c::IPPROTO_TCP as _, c::TCP_NODELAY).map(to_bool)
+    }
+
+    #[inline]
+    fn to_imr(multiaddr: &Ipv4Addr, interface: &Ipv4Addr) -> c::ip_mreq {
+        c::ip_mreq {
+            imr_multiaddr: to_imr_addr(multiaddr),
+            imr_interface: to_imr_addr(interface),
+        }
+    }
+
+    #[inline]
+    fn to_imr_addr(addr: &Ipv4Addr) -> c::in_addr {
+        c::in_addr {
+            s_addr: u32::from_ne_bytes(addr.octets()),
+        }
+    }
+
+    #[inline]
+    fn to_ipv6mr(multiaddr: &Ipv6Addr, interface: u32) -> c::ipv6_mreq {
+        c::ipv6_mreq {
+            ipv6mr_multiaddr: to_ipv6mr_multiaddr(multiaddr),
+            ipv6mr_ifindex: to_ipv6mr_interface(interface),
+        }
+    }
+
+    #[inline]
+    fn to_ipv6mr_multiaddr(multiaddr: &Ipv6Addr) -> c::in6_addr {
+        c::in6_addr {
+            in6_u: linux_raw_sys::general::in6_addr__bindgen_ty_1 {
+                u6_addr8: multiaddr.octets(),
+            },
+        }
+    }
+
+    #[inline]
+    fn to_ipv6mr_interface(interface: u32) -> c::c_int {
+        interface as c::c_int
+    }
+
+    #[inline]
+    fn from_bool(value: bool) -> c::c_uint {
+        c::c_uint::from(value)
+    }
+
+    #[inline]
+    fn to_bool(value: c::c_uint) -> bool {
+        value != 0
+    }
+}
diff --git a/vendor/rustix/src/imp/linux_raw/net/types.rs b/vendor/rustix/src/imp/linux_raw/net/types.rs
new file mode 100644
index 000000000..b8f786b3f
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/net/types.rs
@@ -0,0 +1,282 @@
+use super::super::c;
+use bitflags::bitflags;
+
+/// A type for holding raw integer socket types.
+#[doc(hidden)]
+pub type RawSocketType = u32;
+
+/// `SOCK_*` constants for use with [`socket`].
+///
+/// [`socket`]: crate::net::socket
+#[derive(Debug, Clone, Copy, Eq, PartialEq, Hash)]
+#[repr(transparent)]
+pub struct SocketType(pub(crate) RawSocketType);
+
+#[rustfmt::skip]
+impl SocketType {
+    /// `SOCK_STREAM`
+    pub const STREAM: Self = Self(c::SOCK_STREAM);
+
+    /// `SOCK_DGRAM`
+    pub const DGRAM: Self = Self(c::SOCK_DGRAM);
+
+    /// `SOCK_SEQPACKET`
+    pub const SEQPACKET: Self = Self(c::SOCK_SEQPACKET);
+
+    /// `SOCK_RAW`
+    pub const RAW: Self = Self(c::SOCK_RAW);
+
+    /// `SOCK_RDM`
+    pub const RDM: Self = Self(c::SOCK_RDM);
+
+    /// Constructs a `SocketType` from a raw integer.
+    #[inline]
+    pub const fn from_raw(raw: RawSocketType) -> Self {
+        Self(raw)
+    }
+
+    /// Returns the raw integer for this `SocketType`.
+    #[inline]
+    pub const fn as_raw(self) -> RawSocketType {
+        self.0
+    }
+}
+
+/// A type for holding raw integer address families.
+#[doc(hidden)]
+pub type RawAddressFamily = c::sa_family_t;
+
+/// `AF_*` constants.
+#[derive(Debug, Clone, Copy, Eq, PartialEq, Hash)]
+#[repr(transparent)]
+pub struct AddressFamily(pub(crate) RawAddressFamily);
+
+#[rustfmt::skip]
+impl AddressFamily {
+    /// `AF_UNSPEC`
+    pub const UNSPEC: Self = Self(c::AF_UNSPEC as _);
+    /// `AF_INET`
+    pub const INET: Self = Self(c::AF_INET as _);
+    /// `AF_INET6`
+    pub const INET6: Self = Self(c::AF_INET6 as _);
+    /// `AF_NETLINK`
+    pub const NETLINK: Self = Self(c::AF_NETLINK as _);
+    /// `AF_UNIX`, aka `AF_LOCAL`
+    #[doc(alias = "LOCAL")]
+    pub const UNIX: Self = Self(c::AF_UNIX as _);
+    /// `AF_AX25`
+    pub const AX25: Self = Self(c::AF_AX25 as _);
+    /// `AF_IPX`
+    pub const IPX: Self = Self(c::AF_IPX as _);
+    /// `AF_APPLETALK`
+    pub const APPLETALK: Self = Self(c::AF_APPLETALK as _);
+    /// `AF_NETROM`
+    pub const NETROM: Self = Self(c::AF_NETROM as _);
+    /// `AF_BRIDGE`
+    pub const BRIDGE: Self = Self(c::AF_BRIDGE as _);
+    /// `AF_ATMPVC`
+    pub const ATMPVC: Self = Self(c::AF_ATMPVC as _);
+    /// `AF_X25`
+    pub const X25: Self = Self(c::AF_X25 as _);
+    /// `AF_ROSE`
+    pub const ROSE: Self = Self(c::AF_ROSE as _);
+    /// `AF_DECnet`
+    #[allow(non_upper_case_globals)]
+    pub const DECnet: Self = Self(c::AF_DECnet as _);
+    /// `AF_NETBEUI`
+    pub const NETBEUI: Self = Self(c::AF_NETBEUI as _);
+    /// `AF_SECURITY`
+    pub const SECURITY: Self = Self(c::AF_SECURITY as _);
+    /// `AF_KEY`
+    pub const KEY: Self = Self(c::AF_KEY as _);
+    /// `AF_PACKET`
+    pub const PACKET: Self = Self(c::AF_PACKET as _);
+    /// `AF_ASH`
+    pub const ASH: Self = Self(c::AF_ASH as _);
+    /// `AF_ECONET`
+    pub const ECONET: Self = Self(c::AF_ECONET as _);
+    /// `AF_ATMSVC`
+    pub const ATMSVC: Self = Self(c::AF_ATMSVC as _);
+    /// `AF_RDS`
+    pub const RDS: Self = Self(c::AF_RDS as _);
+    /// `AF_SNA`
+    pub const SNA: Self = Self(c::AF_SNA as _);
+    /// `AF_IRDA`
+    pub const IRDA: Self = Self(c::AF_IRDA as _);
+    /// `AF_PPPOX`
+    pub const PPPOX: Self = Self(c::AF_PPPOX as _);
+    /// `AF_WANPIPE`
+    pub const WANPIPE: Self = Self(c::AF_WANPIPE as _);
+    /// `AF_LLC`
+    pub const LLC: Self = Self(c::AF_LLC as _);
+    /// `AF_CAN`
+    pub const CAN: Self = Self(c::AF_CAN as _);
+    /// `AF_TIPC`
+    pub const TIPC: Self = Self(c::AF_TIPC as _);
+    /// `AF_BLUETOOTH`
+    pub const BLUETOOTH: Self = Self(c::AF_BLUETOOTH as _);
+    /// `AF_IUCV`
+    pub const IUCV: Self = Self(c::AF_IUCV as _);
+    /// `AF_RXRPC`
+    pub const RXRPC: Self = Self(c::AF_RXRPC as _);
+    /// `AF_ISDN`
+    pub const ISDN: Self = Self(c::AF_ISDN as _);
+    /// `AF_PHONET`
+    pub const PHONET: Self = Self(c::AF_PHONET as _);
+    /// `AF_IEEE802154`
+    pub const IEEE802154: Self = Self(c::AF_IEEE802154 as _);
+
+    /// Constructs a `AddressFamily` from a raw integer.
+    #[inline]
+    pub const fn from_raw(raw: RawAddressFamily) -> Self {
+        Self(raw)
+    }
+
+    /// Returns the raw integer for this `AddressFamily`.
+    #[inline]
+    pub const fn as_raw(self) -> RawAddressFamily {
+        self.0
+    }
+}
+
+/// A type for holding raw integer protocols.
+#[doc(hidden)]
+pub type RawProtocol = u32;
+
+/// `IPPROTO_*`
+#[derive(Debug, Clone, Copy, Eq, PartialEq, Hash)]
+#[repr(transparent)]
+pub struct Protocol(pub(crate) RawProtocol);
+
+#[rustfmt::skip]
+impl Protocol {
+    /// `IPPROTO_IP`
+    pub const IP: Self = Self(c::IPPROTO_IP as _);
+    /// `IPPROTO_ICMP`
+    pub const ICMP: Self = Self(c::IPPROTO_ICMP as _);
+    /// `IPPROTO_IGMP`
+    pub const IGMP: Self = Self(c::IPPROTO_IGMP as _);
+    /// `IPPROTO_IPIP`
+    pub const IPIP: Self = Self(c::IPPROTO_IPIP as _);
+    /// `IPPROTO_TCP`
+    pub const TCP: Self = Self(c::IPPROTO_TCP as _);
+    /// `IPPROTO_EGP`
+    pub const EGP: Self = Self(c::IPPROTO_EGP as _);
+    /// `IPPROTO_PUP`
+    pub const PUP: Self = Self(c::IPPROTO_PUP as _);
+    /// `IPPROTO_UDP`
+    pub const UDP: Self = Self(c::IPPROTO_UDP as _);
+    /// `IPPROTO_IDP`
+    pub const IDP: Self = Self(c::IPPROTO_IDP as _);
+    /// `IPPROTO_TP`
+    pub const TP: Self = Self(c::IPPROTO_TP as _);
+    /// `IPPROTO_DCCP`
+    pub const DCCP: Self = Self(c::IPPROTO_DCCP as _);
+    /// `IPPROTO_IPV6`
+    pub const IPV6: Self = Self(c::IPPROTO_IPV6 as _);
+    /// `IPPROTO_RSVP`
+    pub const RSVP: Self = Self(c::IPPROTO_RSVP as _);
+    /// `IPPROTO_GRE`
+    pub const GRE: Self = Self(c::IPPROTO_GRE as _);
+    /// `IPPROTO_ESP`
+    pub const ESP: Self = Self(c::IPPROTO_ESP as _);
+    /// `IPPROTO_AH`
+    pub const AH: Self = Self(c::IPPROTO_AH as _);
+    /// `IPPROTO_MTP`
+    pub const MTP: Self = Self(c::IPPROTO_MTP as _);
+    /// `IPPROTO_BEETPH`
+    pub const BEETPH: Self = Self(c::IPPROTO_BEETPH as _);
+    /// `IPPROTO_ENCAP`
+    pub const ENCAP: Self = Self(c::IPPROTO_ENCAP as _);
+    /// `IPPROTO_PIM`
+    pub const PIM: Self = Self(c::IPPROTO_PIM as _);
+    /// `IPPROTO_COMP`
+    pub const COMP: Self = Self(c::IPPROTO_COMP as _);
+    /// `IPPROTO_SCTP`
+    pub const SCTP: Self = Self(c::IPPROTO_SCTP as _);
+    /// `IPPROTO_UDPLITE`
+    pub const UDPLITE: Self = Self(c::IPPROTO_UDPLITE as _);
+    /// `IPPROTO_MPLS`
+    pub const MPLS: Self = Self(c::IPPROTO_MPLS as _);
+    /// `IPPROTO_ETHERNET`
+    pub const ETHERNET: Self = Self(c::IPPROTO_ETHERNET as _);
+    /// `IPPROTO_RAW`
+    pub const RAW: Self = Self(c::IPPROTO_RAW as _);
+    /// `IPPROTO_MPTCP`
+    pub const MPTCP: Self = Self(c::IPPROTO_MPTCP as _);
+    /// `IPPROTO_FRAGMENT`
+    pub const FRAGMENT: Self = Self(c::IPPROTO_FRAGMENT as _);
+    /// `IPPROTO_ICMPV6`
+    pub const ICMPV6: Self = Self(c::IPPROTO_ICMPV6 as _);
+    /// `IPPROTO_MH`
+    pub const MH: Self = Self(c::IPPROTO_MH as _);
+    /// `IPPROTO_ROUTING`
+    pub const ROUTING: Self = Self(c::IPPROTO_ROUTING as _);
+
+    /// Constructs a `Protocol` from a raw integer.
+    #[inline]
+    pub const fn from_raw(raw: RawProtocol) -> Self {
+        Self(raw)
+    }
+
+    /// Returns the raw integer for this `Protocol`.
+    #[inline]
+    pub const fn as_raw(self) -> RawProtocol {
+        self.0
+    }
+}
+
+/// `SHUT_*` constants for use with [`shutdown`].
+///
+/// [`shutdown`]: crate::net::shutdown
+#[derive(Debug, Clone, Copy, Eq, PartialEq, Hash)]
+#[repr(u32)]
+pub enum Shutdown {
+    /// `SHUT_WR`—Disable further read operations.
+    Read = c::SHUT_RD,
+    /// `SHUT_WR`—Disable further write operations.
+    Write = c::SHUT_WR,
+    /// `SHUT_RDWR`—Disable further read and write operations.
+    ReadWrite = c::SHUT_RDWR,
+}
+
+bitflags! {
+    /// `SOCK_*` constants for use with [`accept_with`] and [`acceptfrom_with`].
+    ///
+    /// [`accept_with`]: crate::net::accept_with
+    /// [`acceptfrom_with`]: crate::net::acceptfrom_with
+    pub struct AcceptFlags: c::c_uint {
+        /// `SOCK_NONBLOCK`
+        const NONBLOCK = c::O_NONBLOCK;
+        /// `SOCK_CLOEXEC`
+        const CLOEXEC = c::O_CLOEXEC;
+    }
+}
+
+bitflags! {
+    /// `SOCK_*` constants for use with [`socket`].
+    ///
+    /// [`socket`]: crate::net::socket
+    pub struct SocketFlags: c::c_uint {
+        /// `SOCK_NONBLOCK`
+        const NONBLOCK = c::O_NONBLOCK;
+
+        /// `SOCK_CLOEXEC`
+        const CLOEXEC = c::O_CLOEXEC;
+    }
+}
+
+/// Timeout identifier for use with [`set_socket_timeout`] and
+/// [`get_socket_timeout`].
+///
+/// [`set_socket_timeout`]: crate::net::sockopt::set_socket_timeout.
+/// [`get_socket_timeout`]: crate::net::sockopt::get_socket_timeout.
+#[derive(Debug, Clone, Copy, Eq, PartialEq, Hash)]
+#[repr(u32)]
+pub enum Timeout {
+    /// `SO_RCVTIMEO`—Timeout for receiving.
+    Recv = c::SO_RCVTIMEO_NEW,
+
+    /// `SO_SNDTIMEO`—Timeout for sending.
+    Send = c::SO_SNDTIMEO_NEW,
+}
diff --git a/vendor/rustix/src/imp/linux_raw/net/write_sockaddr.rs b/vendor/rustix/src/imp/linux_raw/net/write_sockaddr.rs
new file mode 100644
index 000000000..17abd96a0
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/net/write_sockaddr.rs
@@ -0,0 +1,60 @@
+//! The BSD sockets API requires us to read the `ss_family` field before
+//! we can interpret the rest of a `sockaddr` produced by the kernel.
+#![allow(unsafe_code)]
+
+use super::super::c;
+use crate::net::{SocketAddrAny, SocketAddrStorage, SocketAddrUnix, SocketAddrV4, SocketAddrV6};
+use core::mem::size_of;
+
+pub(crate) unsafe fn write_sockaddr(
+    addr: &SocketAddrAny,
+    storage: *mut SocketAddrStorage,
+) -> usize {
+    match addr {
+        SocketAddrAny::V4(v4) => write_sockaddr_v4(v4, storage),
+        SocketAddrAny::V6(v6) => write_sockaddr_v6(v6, storage),
+        SocketAddrAny::Unix(unix) => write_sockaddr_unix(unix, storage),
+    }
+}
+
+pub(crate) unsafe fn encode_sockaddr_v4(v4: &SocketAddrV4) -> c::sockaddr_in {
+    c::sockaddr_in {
+        sin_family: c::AF_INET as _,
+        sin_port: u16::to_be(v4.port()),
+        sin_addr: c::in_addr {
+            s_addr: u32::from_ne_bytes(v4.ip().octets()),
+        },
+        __pad: [0_u8; 8],
+    }
+}
+
+unsafe fn write_sockaddr_v4(v4: &SocketAddrV4, storage: *mut SocketAddrStorage) -> usize {
+    let encoded = encode_sockaddr_v4(v4);
+    core::ptr::write(storage.cast(), encoded);
+    size_of::<c::sockaddr_in>()
+}
+
+pub(crate) unsafe fn encode_sockaddr_v6(v6: &SocketAddrV6) -> c::sockaddr_in6 {
+    c::sockaddr_in6 {
+        sin6_family: c::AF_INET6 as _,
+        sin6_port: u16::to_be(v6.port()),
+        sin6_flowinfo: u32::to_be(v6.flowinfo()),
+        sin6_addr: c::in6_addr {
+            in6_u: linux_raw_sys::general::in6_addr__bindgen_ty_1 {
+                u6_addr8: v6.ip().octets(),
+            },
+        },
+        sin6_scope_id: v6.scope_id(),
+    }
+}
+
+unsafe fn write_sockaddr_v6(v6: &SocketAddrV6, storage: *mut SocketAddrStorage) -> usize {
+    let encoded = encode_sockaddr_v6(v6);
+    core::ptr::write(storage.cast(), encoded);
+    size_of::<c::sockaddr_in6>()
+}
+
+unsafe fn write_sockaddr_unix(unix: &SocketAddrUnix, storage: *mut SocketAddrStorage) -> usize {
+    core::ptr::write(storage.cast(), unix.unix);
+    unix.len()
+}
diff --git a/vendor/rustix/src/imp/linux_raw/param/auxv.rs b/vendor/rustix/src/imp/linux_raw/param/auxv.rs
new file mode 100644
index 000000000..beed8613c
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/param/auxv.rs
@@ -0,0 +1,203 @@
+//! Linux auxv support.
+//!
+//! # Safety
+//!
+//! This uses raw pointers to locate and read the kernel-provided auxv array.
+#![allow(unsafe_code)]
+
+use super::super::c;
+use super::super::elf::{Elf_Ehdr, Elf_Phdr};
+#[cfg(feature = "param")]
+use crate::ffi::CStr;
+use core::mem::size_of;
+use core::ptr::null;
+#[cfg(feature = "runtime")]
+use core::slice;
+use linux_raw_sys::general::{
+    AT_CLKTCK, AT_EXECFN, AT_HWCAP, AT_HWCAP2, AT_NULL, AT_PAGESZ, AT_PHDR, AT_PHENT, AT_PHNUM,
+    AT_SYSINFO_EHDR,
+};
+
+#[cfg(feature = "param")]
+#[inline]
+pub(crate) fn page_size() -> usize {
+    auxv().page_size
+}
+
+#[cfg(feature = "param")]
+#[inline]
+pub(crate) fn clock_ticks_per_second() -> u64 {
+    auxv().clock_ticks_per_second as u64
+}
+
+#[cfg(feature = "param")]
+#[inline]
+pub(crate) fn linux_hwcap() -> (usize, usize) {
+    let auxv = auxv();
+    (auxv.hwcap, auxv.hwcap2)
+}
+
+#[cfg(feature = "param")]
+#[inline]
+pub(crate) fn linux_execfn() -> &'static CStr {
+    let execfn = auxv().execfn;
+
+    // Safety: We assume the `AT_EXECFN` value provided by the kernel is a
+    // valid pointer to a valid NUL-terminated array of bytes.
+    unsafe { CStr::from_ptr(execfn.cast()) }
+}
+
+#[cfg(feature = "runtime")]
+#[inline]
+pub(crate) fn exe_phdrs() -> (*const c::c_void, usize) {
+    let auxv = auxv();
+    (auxv.phdr.cast(), auxv.phnum)
+}
+
+#[cfg(feature = "runtime")]
+#[inline]
+pub(in super::super) fn exe_phdrs_slice() -> &'static [Elf_Phdr] {
+    let auxv = auxv();
+
+    // Safety: We assume the `AT_PHDR` and `AT_PHNUM` values provided by the
+    // kernel form a valid slice.
+    unsafe { slice::from_raw_parts(auxv.phdr, auxv.phnum) }
+}
+
+#[inline]
+pub(in super::super) fn sysinfo_ehdr() -> *const Elf_Ehdr {
+    auxv().sysinfo_ehdr
+}
+
+#[inline]
+fn auxv() -> &'static Auxv {
+    // Safety: `AUXV` is initialized from the `.init_array`, and we never
+    // mutate it thereafter, so it's effectively initialized read-only in all
+    // other code.
+    unsafe {
+        // Assert that the initialization has happened. On glibc and musl, this
+        // is handled automatically by `.init_array` functions. Otherwise,
+        // `rustix::process::init` must be called explicitly.
+        debug_assert_ne!(AUXV.page_size, 0);
+
+        &AUXV
+    }
+}
+
+/// A struct for holding fields obtained from the kernel-provided auxv array.
+struct Auxv {
+    page_size: usize,
+    clock_ticks_per_second: usize,
+    hwcap: usize,
+    hwcap2: usize,
+    sysinfo_ehdr: *const Elf_Ehdr,
+    phdr: *const Elf_Phdr,
+    phnum: usize,
+    execfn: *const c::c_char,
+}
+
+/// Data obtained from the kernel-provided auxv array. This is initialized at
+/// program startup below.
+static mut AUXV: Auxv = Auxv {
+    page_size: 0,
+    clock_ticks_per_second: 0,
+    hwcap: 0,
+    hwcap2: 0,
+    sysinfo_ehdr: null(),
+    phdr: null(),
+    phnum: 0,
+    execfn: null(),
+};
+
+/// GLIBC passes argc, argv, and envp to functions in .init_array, as a
+/// non-standard extension. Use priority 99 so that we run before any
+/// normal user-defined constructor functions.
+#[cfg(all(target_env = "gnu", not(target_vendor = "mustang")))]
+#[used]
+#[link_section = ".init_array.00099"]
+static INIT_ARRAY: unsafe extern "C" fn(c::c_int, *mut *mut u8, *mut *mut u8) = {
+    unsafe extern "C" fn function(_argc: c::c_int, _argv: *mut *mut u8, envp: *mut *mut u8) {
+        init_from_envp(envp);
+    }
+    function
+};
+
+/// For musl, assume that `__environ` is available and points to the original
+/// environment from the kernel, so we can find the auxv array in memory after
+/// it. Use priority 99 so that we run before any normal user-defined
+/// constructor functions.
+///
+/// <https://refspecs.linuxbase.org/LSB_5.0.0/LSB-Core-generic/LSB-Core-generic/baselib---environ.html>
+#[cfg(all(target_env = "musl", not(target_vendor = "mustang")))]
+#[used]
+#[link_section = ".init_array.00099"]
+static INIT_ARRAY: unsafe extern "C" fn() = {
+    unsafe extern "C" fn function() {
+        extern "C" {
+            static __environ: *mut *mut u8;
+        }
+
+        init_from_envp(__environ)
+    }
+    function
+};
+
+/// On mustang or any non-musl non-glibic platform where we don't know that we
+/// have `.init_array`, we export a function to be called during
+/// initialization, and passed a pointer to the original environment variable
+/// block set up by the OS.
+#[cfg(any(
+    target_vendor = "mustang",
+    not(any(target_env = "gnu", target_env = "musl")),
+))]
+#[inline]
+pub(crate) unsafe fn init(envp: *mut *mut u8) {
+    init_from_envp(envp);
+}
+
+/// # Safety
+///
+/// This must be passed a pointer to the environment variable buffer
+/// provided by the kernel, which is followed in memory by the auxv array.
+unsafe fn init_from_envp(mut envp: *mut *mut u8) {
+    while !(*envp).is_null() {
+        envp = envp.add(1);
+    }
+    init_from_auxp(envp.add(1).cast())
+}
+
+/// # Safety
+///
+/// This must be passed a pointer to the auxv array provided by the kernel.
+unsafe fn init_from_auxp(mut auxp: *const Elf_auxv_t) {
+    loop {
+        let Elf_auxv_t { a_type, a_val } = *auxp;
+        match a_type as _ {
+            AT_PAGESZ => AUXV.page_size = a_val as usize,
+            AT_CLKTCK => AUXV.clock_ticks_per_second = a_val as usize,
+            AT_HWCAP => AUXV.hwcap = a_val as usize,
+            AT_HWCAP2 => AUXV.hwcap2 = a_val as usize,
+            AT_SYSINFO_EHDR => AUXV.sysinfo_ehdr = a_val.cast(),
+            AT_PHDR => AUXV.phdr = a_val.cast(),
+            AT_PHNUM => AUXV.phnum = a_val as usize,
+            AT_PHENT => assert_eq!(a_val as usize, size_of::<Elf_Phdr>()),
+            AT_EXECFN => AUXV.execfn = a_val.cast(),
+            AT_NULL => break,
+            _ => (),
+        }
+        auxp = auxp.add(1);
+    }
+}
+
+// ELF ABI
+
+#[repr(C)]
+#[derive(Copy, Clone)]
+struct Elf_auxv_t {
+    a_type: usize,
+
+    // Some of the values in the auxv array are pointers, so we make `a_val` a
+    // pointer, in order to preserve their provenance. For the values which are
+    // integers, we cast this to `usize`.
+    a_val: *const (),
+}
diff --git a/vendor/rustix/src/imp/linux_raw/param/mod.rs b/vendor/rustix/src/imp/linux_raw/param/mod.rs
new file mode 100644
index 000000000..2cb2fe78a
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/param/mod.rs
@@ -0,0 +1 @@
+pub(crate) mod auxv;
diff --git a/vendor/rustix/src/imp/linux_raw/process/cpu_set.rs b/vendor/rustix/src/imp/linux_raw/process/cpu_set.rs
new file mode 100644
index 000000000..10c5f478e
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/process/cpu_set.rs
@@ -0,0 +1,47 @@
+#![allow(non_snake_case)]
+
+use super::types::RawCpuSet;
+use core::mem::size_of_val;
+
+#[inline]
+pub(crate) fn CPU_SET(cpu: usize, cpuset: &mut RawCpuSet) {
+    let size_in_bits = 8 * size_of_val(&cpuset.bits[0]); // 32, 64 etc
+    let (idx, offset) = (cpu / size_in_bits, cpu % size_in_bits);
+    cpuset.bits[idx] |= 1 << offset
+}
+
+#[inline]
+pub(crate) fn CPU_ZERO(cpuset: &mut RawCpuSet) {
+    // TODO: With, Rust 1.50, use `cpuset.bits.fill(0)` instead.
+    for element in &mut cpuset.bits {
+        *element = 0;
+    }
+}
+
+#[inline]
+pub(crate) fn CPU_CLR(cpu: usize, cpuset: &mut RawCpuSet) {
+    let size_in_bits = 8 * size_of_val(&cpuset.bits[0]); // 32, 64 etc
+    let (idx, offset) = (cpu / size_in_bits, cpu % size_in_bits);
+    cpuset.bits[idx] &= !(1 << offset)
+}
+
+#[inline]
+pub(crate) fn CPU_ISSET(cpu: usize, cpuset: &RawCpuSet) -> bool {
+    let size_in_bits = 8 * size_of_val(&cpuset.bits[0]);
+    let (idx, offset) = (cpu / size_in_bits, cpu % size_in_bits);
+    (cpuset.bits[idx] & (1 << offset)) != 0
+}
+
+#[inline]
+pub(crate) fn CPU_COUNT_S(size_in_bytes: usize, cpuset: &RawCpuSet) -> u32 {
+    let size_of_mask = size_of_val(&cpuset.bits[0]);
+    let idx = size_in_bytes / size_of_mask;
+    cpuset.bits[..idx]
+        .iter()
+        .fold(0, |acc, i| acc + i.count_ones())
+}
+
+#[inline]
+pub(crate) fn CPU_COUNT(cpuset: &RawCpuSet) -> u32 {
+    CPU_COUNT_S(core::mem::size_of::<RawCpuSet>(), cpuset)
+}
diff --git a/vendor/rustix/src/imp/linux_raw/process/mod.rs b/vendor/rustix/src/imp/linux_raw/process/mod.rs
new file mode 100644
index 000000000..9b2c25f91
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/process/mod.rs
@@ -0,0 +1,4 @@
+pub(crate) mod cpu_set;
+pub(crate) mod syscalls;
+pub(crate) mod types;
+pub(crate) mod wait;
diff --git a/vendor/rustix/src/imp/linux_raw/process/syscalls.rs b/vendor/rustix/src/imp/linux_raw/process/syscalls.rs
new file mode 100644
index 000000000..3c833ede7
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/process/syscalls.rs
@@ -0,0 +1,517 @@
+//! linux_raw syscalls supporting `rustix::process`.
+//!
+//! # Safety
+//!
+//! See the `rustix::imp` module documentation for details.
+#![allow(unsafe_code)]
+#![allow(clippy::undocumented_unsafe_blocks)]
+
+use super::super::c;
+use super::super::conv::{
+    by_mut, by_ref, c_int, c_uint, negative_pid, pass_usize, ret, ret_c_int, ret_c_uint,
+    ret_infallible, ret_usize, ret_usize_infallible, size_of, slice_just_addr, slice_mut, zero,
+};
+use super::types::{RawCpuSet, RawUname};
+use crate::fd::BorrowedFd;
+use crate::ffi::CStr;
+use crate::io;
+use crate::process::{
+    Cpuid, Gid, MembarrierCommand, MembarrierQuery, Pid, RawNonZeroPid, RawPid, Resource, Rlimit,
+    Signal, Uid, WaitOptions, WaitStatus,
+};
+use core::convert::TryInto;
+use core::mem::MaybeUninit;
+use core::ptr::{null, null_mut};
+use linux_raw_sys::general::{
+    __kernel_gid_t, __kernel_pid_t, __kernel_uid_t, membarrier_cmd, membarrier_cmd_flag, rlimit,
+    rlimit64, PRIO_PGRP, PRIO_PROCESS, PRIO_USER, RLIM64_INFINITY, RLIM_INFINITY,
+};
+
+#[inline]
+pub(crate) fn chdir(filename: &CStr) -> io::Result<()> {
+    unsafe { ret(syscall_readonly!(__NR_chdir, filename)) }
+}
+
+#[inline]
+pub(crate) fn fchdir(fd: BorrowedFd<'_>) -> io::Result<()> {
+    unsafe { ret(syscall_readonly!(__NR_fchdir, fd)) }
+}
+
+#[inline]
+pub(crate) fn getcwd(buf: &mut [u8]) -> io::Result<usize> {
+    let (buf_addr_mut, buf_len) = slice_mut(buf);
+    unsafe { ret_usize(syscall!(__NR_getcwd, buf_addr_mut, buf_len)) }
+}
+
+#[inline]
+pub(crate) fn membarrier_query() -> MembarrierQuery {
+    unsafe {
+        match ret_c_uint(syscall!(
+            __NR_membarrier,
+            c_int(membarrier_cmd::MEMBARRIER_CMD_QUERY as _),
+            c_uint(0)
+        )) {
+            Ok(query) => {
+                // Safety: The safety of `from_bits_unchecked` is discussed
+                // [here]. Our "source of truth" is Linux, and here, the
+                // `query` value is coming from Linux, so we know it only
+                // contains "source of truth" valid bits.
+                //
+                // [here]: https://github.com/bitflags/bitflags/pull/207#issuecomment-671668662
+                MembarrierQuery::from_bits_unchecked(query)
+            }
+            Err(_) => MembarrierQuery::empty(),
+        }
+    }
+}
+
+#[inline]
+pub(crate) fn membarrier(cmd: MembarrierCommand) -> io::Result<()> {
+    unsafe { ret(syscall!(__NR_membarrier, cmd, c_uint(0))) }
+}
+
+#[inline]
+pub(crate) fn membarrier_cpu(cmd: MembarrierCommand, cpu: Cpuid) -> io::Result<()> {
+    unsafe {
+        ret(syscall!(
+            __NR_membarrier,
+            cmd,
+            c_uint(membarrier_cmd_flag::MEMBARRIER_CMD_FLAG_CPU as _),
+            cpu
+        ))
+    }
+}
+
+#[inline]
+pub(crate) fn getpid() -> Pid {
+    unsafe {
+        let pid: i32 = ret_usize_infallible(syscall_readonly!(__NR_getpid)) as __kernel_pid_t;
+        debug_assert!(pid > 0);
+        Pid::from_raw_nonzero(RawNonZeroPid::new_unchecked(pid as u32))
+    }
+}
+
+#[inline]
+pub(crate) fn getppid() -> Option<Pid> {
+    unsafe {
+        let ppid: i32 = ret_usize_infallible(syscall_readonly!(__NR_getppid)) as __kernel_pid_t;
+        Pid::from_raw(ppid as u32)
+    }
+}
+
+#[inline]
+pub(crate) fn getgid() -> Gid {
+    #[cfg(any(target_arch = "x86", target_arch = "sparc", target_arch = "arm"))]
+    unsafe {
+        let gid: i32 =
+            (ret_usize_infallible(syscall_readonly!(__NR_getgid32)) as __kernel_gid_t).into();
+        Gid::from_raw(gid as u32)
+    }
+    #[cfg(not(any(target_arch = "x86", target_arch = "sparc", target_arch = "arm")))]
+    unsafe {
+        let gid = ret_usize_infallible(syscall_readonly!(__NR_getgid)) as __kernel_gid_t;
+        Gid::from_raw(gid as u32)
+    }
+}
+
+#[inline]
+pub(crate) fn getegid() -> Gid {
+    #[cfg(any(target_arch = "x86", target_arch = "sparc", target_arch = "arm"))]
+    unsafe {
+        let gid: i32 =
+            (ret_usize_infallible(syscall_readonly!(__NR_getegid32)) as __kernel_gid_t).into();
+        Gid::from_raw(gid as u32)
+    }
+    #[cfg(not(any(target_arch = "x86", target_arch = "sparc", target_arch = "arm")))]
+    unsafe {
+        let gid = ret_usize_infallible(syscall_readonly!(__NR_getegid)) as __kernel_gid_t;
+        Gid::from_raw(gid as u32)
+    }
+}
+
+#[inline]
+pub(crate) fn getuid() -> Uid {
+    #[cfg(any(target_arch = "x86", target_arch = "sparc", target_arch = "arm"))]
+    unsafe {
+        let uid = (ret_usize_infallible(syscall_readonly!(__NR_getuid32)) as __kernel_uid_t).into();
+        Uid::from_raw(uid)
+    }
+    #[cfg(not(any(target_arch = "x86", target_arch = "sparc", target_arch = "arm")))]
+    unsafe {
+        let uid = ret_usize_infallible(syscall_readonly!(__NR_getuid)) as __kernel_uid_t;
+        Uid::from_raw(uid as u32)
+    }
+}
+
+#[inline]
+pub(crate) fn geteuid() -> Uid {
+    #[cfg(any(target_arch = "x86", target_arch = "sparc", target_arch = "arm"))]
+    unsafe {
+        let uid: i32 =
+            (ret_usize_infallible(syscall_readonly!(__NR_geteuid32)) as __kernel_uid_t).into();
+        Uid::from_raw(uid as u32)
+    }
+    #[cfg(not(any(target_arch = "x86", target_arch = "sparc", target_arch = "arm")))]
+    unsafe {
+        let uid = ret_usize_infallible(syscall_readonly!(__NR_geteuid)) as __kernel_uid_t;
+        Uid::from_raw(uid as u32)
+    }
+}
+
+#[inline]
+pub(crate) fn sched_getaffinity(pid: Option<Pid>, cpuset: &mut RawCpuSet) -> io::Result<()> {
+    unsafe {
+        // The raw linux syscall returns the size (in bytes) of the `cpumask_t`
+        // data type that is used internally by the kernel to represent the CPU
+        // set bit mask.
+        let size = ret_usize(syscall!(
+            __NR_sched_getaffinity,
+            c_uint(Pid::as_raw(pid)),
+            size_of::<RawCpuSet, _>(),
+            by_mut(&mut cpuset.bits)
+        ))?;
+        let bytes = (cpuset as *mut RawCpuSet).cast::<u8>();
+        let rest = bytes.wrapping_add(size);
+        // Zero every byte in the cpuset not set by the kernel.
+        rest.write_bytes(0, core::mem::size_of::<RawCpuSet>() - size);
+        Ok(())
+    }
+}
+
+#[inline]
+pub(crate) fn sched_setaffinity(pid: Option<Pid>, cpuset: &RawCpuSet) -> io::Result<()> {
+    unsafe {
+        ret(syscall_readonly!(
+            __NR_sched_setaffinity,
+            c_uint(Pid::as_raw(pid)),
+            size_of::<RawCpuSet, _>(),
+            slice_just_addr(&cpuset.bits)
+        ))
+    }
+}
+
+#[inline]
+pub(crate) fn sched_yield() {
+    unsafe {
+        // See the documentation for [`crate::process::sched_yield`] for why
+        // errors are ignored.
+        syscall_readonly!(__NR_sched_yield).decode_void();
+    }
+}
+
+#[inline]
+pub(crate) fn uname() -> RawUname {
+    let mut uname = MaybeUninit::<RawUname>::uninit();
+    unsafe {
+        ret(syscall!(__NR_uname, &mut uname)).unwrap();
+        uname.assume_init()
+    }
+}
+
+#[inline]
+pub(crate) fn nice(inc: i32) -> io::Result<i32> {
+    let priority = if inc > -40 && inc < 40 {
+        inc + getpriority_process(None)?
+    } else {
+        inc
+    }
+    // TODO: With Rust 1.50, use `.clamp` instead of `.min` and `.max`.
+    //.clamp(-20, 19);
+    .min(19)
+    .max(-20);
+    setpriority_process(None, priority)?;
+    Ok(priority)
+}
+
+#[inline]
+pub(crate) fn getpriority_user(uid: Uid) -> io::Result<i32> {
+    unsafe {
+        Ok(20
+            - ret_c_int(syscall_readonly!(
+                __NR_getpriority,
+                c_uint(PRIO_USER),
+                c_uint(uid.as_raw())
+            ))?)
+    }
+}
+
+#[inline]
+pub(crate) fn getpriority_pgrp(pgid: Option<Pid>) -> io::Result<i32> {
+    unsafe {
+        Ok(20
+            - ret_c_int(syscall_readonly!(
+                __NR_getpriority,
+                c_uint(PRIO_PGRP),
+                c_uint(Pid::as_raw(pgid))
+            ))?)
+    }
+}
+
+#[inline]
+pub(crate) fn getpriority_process(pid: Option<Pid>) -> io::Result<i32> {
+    unsafe {
+        Ok(20
+            - ret_c_int(syscall_readonly!(
+                __NR_getpriority,
+                c_uint(PRIO_PROCESS),
+                c_uint(Pid::as_raw(pid))
+            ))?)
+    }
+}
+
+#[inline]
+pub(crate) fn setpriority_user(uid: Uid, priority: i32) -> io::Result<()> {
+    unsafe {
+        ret(syscall_readonly!(
+            __NR_setpriority,
+            c_uint(PRIO_USER),
+            c_uint(uid.as_raw()),
+            c_int(priority)
+        ))
+    }
+}
+
+#[inline]
+pub(crate) fn setpriority_pgrp(pgid: Option<Pid>, priority: i32) -> io::Result<()> {
+    unsafe {
+        ret(syscall_readonly!(
+            __NR_setpriority,
+            c_uint(PRIO_PGRP),
+            c_uint(Pid::as_raw(pgid)),
+            c_int(priority)
+        ))
+    }
+}
+
+#[inline]
+pub(crate) fn setpriority_process(pid: Option<Pid>, priority: i32) -> io::Result<()> {
+    unsafe {
+        ret(syscall_readonly!(
+            __NR_setpriority,
+            c_uint(PRIO_PROCESS),
+            c_uint(Pid::as_raw(pid)),
+            c_int(priority)
+        ))
+    }
+}
+
+#[inline]
+pub(crate) fn getrlimit(limit: Resource) -> Rlimit {
+    let mut result = MaybeUninit::<rlimit64>::uninit();
+    unsafe {
+        match ret(syscall!(
+            __NR_prlimit64,
+            c_uint(0),
+            limit,
+            null::<c::c_void>(),
+            &mut result
+        )) {
+            Ok(()) => rlimit_from_linux(result.assume_init()),
+            Err(e) => {
+                debug_assert_eq!(e, io::Errno::NOSYS);
+                getrlimit_old(limit)
+            }
+        }
+    }
+}
+
+/// The old 32-bit-only `getrlimit` syscall, for when we lack the new
+/// `prlimit64`.
+unsafe fn getrlimit_old(limit: Resource) -> Rlimit {
+    let mut result = MaybeUninit::<rlimit>::uninit();
+
+    // On these platforms, `__NR_getrlimit` is called `__NR_ugetrlimit`.
+    #[cfg(any(
+        target_arch = "arm",
+        target_arch = "powerpc",
+        target_arch = "powerpc64",
+        target_arch = "x86",
+    ))]
+    {
+        ret_infallible(syscall!(__NR_ugetrlimit, limit, &mut result));
+    }
+
+    // On these platforms, it's just `__NR_getrlimit`.
+    #[cfg(not(any(
+        target_arch = "arm",
+        target_arch = "powerpc",
+        target_arch = "powerpc64",
+        target_arch = "x86",
+    )))]
+    {
+        ret_infallible(syscall!(__NR_getrlimit, limit, &mut result));
+    }
+
+    rlimit_from_linux_old(result.assume_init())
+}
+
+#[inline]
+pub(crate) fn setrlimit(limit: Resource, new: Rlimit) -> io::Result<()> {
+    unsafe {
+        let lim = rlimit_to_linux(new.clone())?;
+        match ret(syscall_readonly!(
+            __NR_prlimit64,
+            c_uint(0),
+            limit,
+            by_ref(&lim),
+            null_mut::<c::c_void>()
+        )) {
+            Ok(()) => Ok(()),
+            Err(io::Errno::NOSYS) => setrlimit_old(limit, new),
+            Err(e) => Err(e),
+        }
+    }
+}
+
+/// The old 32-bit-only `setrlimit` syscall, for when we lack the new
+/// `prlimit64`.
+unsafe fn setrlimit_old(limit: Resource, new: Rlimit) -> io::Result<()> {
+    let lim = rlimit_to_linux_old(new)?;
+    ret(syscall_readonly!(__NR_setrlimit, limit, by_ref(&lim)))
+}
+
+#[inline]
+pub(crate) fn prlimit(pid: Option<Pid>, limit: Resource, new: Rlimit) -> io::Result<Rlimit> {
+    let lim = rlimit_to_linux(new)?;
+    let mut result = MaybeUninit::<rlimit64>::uninit();
+    unsafe {
+        match ret(syscall!(
+            __NR_prlimit64,
+            c_uint(Pid::as_raw(pid)),
+            limit,
+            by_ref(&lim),
+            &mut result
+        )) {
+            Ok(()) => Ok(rlimit_from_linux(result.assume_init())),
+            Err(e) => Err(e),
+        }
+    }
+}
+
+/// Convert a Rust [`Rlimit`] to a C `rlimit64`.
+#[inline]
+fn rlimit_from_linux(lim: rlimit64) -> Rlimit {
+    let current = if lim.rlim_cur == RLIM64_INFINITY as _ {
+        None
+    } else {
+        Some(lim.rlim_cur)
+    };
+    let maximum = if lim.rlim_max == RLIM64_INFINITY as _ {
+        None
+    } else {
+        Some(lim.rlim_max)
+    };
+    Rlimit { current, maximum }
+}
+
+/// Convert a C `rlimit64` to a Rust `Rlimit`.
+#[inline]
+fn rlimit_to_linux(lim: Rlimit) -> io::Result<rlimit64> {
+    let rlim_cur = match lim.current {
+        Some(r) => r,
+        None => RLIM64_INFINITY as _,
+    };
+    let rlim_max = match lim.maximum {
+        Some(r) => r,
+        None => RLIM64_INFINITY as _,
+    };
+    Ok(rlimit64 { rlim_cur, rlim_max })
+}
+
+/// Like `rlimit_from_linux` but uses Linux's old 32-bit `rlimit`.
+#[allow(clippy::useless_conversion)]
+fn rlimit_from_linux_old(lim: rlimit) -> Rlimit {
+    let current = if lim.rlim_cur == RLIM_INFINITY as _ {
+        None
+    } else {
+        Some(lim.rlim_cur.into())
+    };
+    let maximum = if lim.rlim_max == RLIM_INFINITY as _ {
+        None
+    } else {
+        Some(lim.rlim_max.into())
+    };
+    Rlimit { current, maximum }
+}
+
+/// Like `rlimit_to_linux` but uses Linux's old 32-bit `rlimit`.
+#[allow(clippy::useless_conversion)]
+fn rlimit_to_linux_old(lim: Rlimit) -> io::Result<rlimit> {
+    let rlim_cur = match lim.current {
+        Some(r) => r.try_into().map_err(|_e| io::Errno::INVAL)?,
+        None => RLIM_INFINITY as _,
+    };
+    let rlim_max = match lim.maximum {
+        Some(r) => r.try_into().map_err(|_e| io::Errno::INVAL)?,
+        None => RLIM_INFINITY as _,
+    };
+    Ok(rlimit { rlim_cur, rlim_max })
+}
+
+#[inline]
+pub(crate) fn wait(waitopts: WaitOptions) -> io::Result<Option<(Pid, WaitStatus)>> {
+    _waitpid(!0, waitopts)
+}
+
+#[inline]
+pub(crate) fn waitpid(
+    pid: Option<Pid>,
+    waitopts: WaitOptions,
+) -> io::Result<Option<(Pid, WaitStatus)>> {
+    _waitpid(Pid::as_raw(pid), waitopts)
+}
+
+#[inline]
+pub(crate) fn _waitpid(
+    pid: RawPid,
+    waitopts: WaitOptions,
+) -> io::Result<Option<(Pid, WaitStatus)>> {
+    unsafe {
+        let mut status = MaybeUninit::<u32>::uninit();
+        let pid = ret_c_uint(syscall!(
+            __NR_wait4,
+            c_int(pid as _),
+            &mut status,
+            c_int(waitopts.bits() as _),
+            zero()
+        ))?;
+        Ok(RawNonZeroPid::new(pid).map(|non_zero| {
+            (
+                Pid::from_raw_nonzero(non_zero),
+                WaitStatus::new(status.assume_init()),
+            )
+        }))
+    }
+}
+
+#[cfg(feature = "runtime")]
+#[inline]
+pub(crate) fn exit_group(code: c::c_int) -> ! {
+    unsafe { syscall_noreturn!(__NR_exit_group, c_int(code)) }
+}
+
+#[inline]
+pub(crate) fn setsid() -> io::Result<Pid> {
+    unsafe {
+        let pid = ret_usize(syscall_readonly!(__NR_setsid))?;
+        debug_assert!(pid > 0);
+        Ok(Pid::from_raw_nonzero(RawNonZeroPid::new_unchecked(
+            pid as u32,
+        )))
+    }
+}
+
+#[inline]
+pub(crate) fn kill_process(pid: Pid, sig: Signal) -> io::Result<()> {
+    unsafe { ret(syscall_readonly!(__NR_kill, pid, sig)) }
+}
+
+#[inline]
+pub(crate) fn kill_process_group(pid: Pid, sig: Signal) -> io::Result<()> {
+    unsafe { ret(syscall_readonly!(__NR_kill, negative_pid(pid), sig)) }
+}
+
+#[inline]
+pub(crate) fn kill_current_process_group(sig: Signal) -> io::Result<()> {
+    unsafe { ret(syscall_readonly!(__NR_kill, pass_usize(0), sig)) }
+}
diff --git a/vendor/rustix/src/imp/linux_raw/process/types.rs b/vendor/rustix/src/imp/linux_raw/process/types.rs
new file mode 100644
index 000000000..53e2c7db1
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/process/types.rs
@@ -0,0 +1,246 @@
+use super::super::c;
+use linux_raw_sys::general::membarrier_cmd;
+
+/// A command for use with [`membarrier`] and [`membarrier_cpu`].
+///
+/// For `MEMBARRIER_CMD_QUERY`, see [`membarrier_query`].
+///
+/// [`membarrier`]: crate::process::membarrier
+/// [`membarrier_cpu`]: crate::process::membarrier_cpu
+/// [`membarrier_query`]: crate::process::membarrier_query
+#[derive(Copy, Clone, Eq, PartialEq, Debug)]
+#[repr(u32)]
+pub enum MembarrierCommand {
+    /// `MEMBARRIER_CMD_GLOBAL`
+    #[doc(alias = "Shared")]
+    #[doc(alias = "MEMBARRIER_CMD_SHARED")]
+    Global = membarrier_cmd::MEMBARRIER_CMD_GLOBAL as _,
+    /// `MEMBARRIER_CMD_GLOBAL_EXPEDITED`
+    GlobalExpedited = membarrier_cmd::MEMBARRIER_CMD_GLOBAL_EXPEDITED as _,
+    /// `MEMBARRIER_CMD_REGISTER_GLOBAL_EXPEDITED`
+    RegisterGlobalExpedited = membarrier_cmd::MEMBARRIER_CMD_REGISTER_GLOBAL_EXPEDITED as _,
+    /// `MEMBARRIER_CMD_PRIVATE_EXPEDITED`
+    PrivateExpedited = membarrier_cmd::MEMBARRIER_CMD_PRIVATE_EXPEDITED as _,
+    /// `MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED`
+    RegisterPrivateExpedited = membarrier_cmd::MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED as _,
+    /// `MEMBARRIER_CMD_PRIVATE_EXPEDITED_SYNC_CORE`
+    PrivateExpeditedSyncCore = membarrier_cmd::MEMBARRIER_CMD_PRIVATE_EXPEDITED_SYNC_CORE as _,
+    /// `MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED_SYNC_CORE`
+    RegisterPrivateExpeditedSyncCore =
+        membarrier_cmd::MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED_SYNC_CORE as _,
+    /// `MEMBARRIER_CMD_PRIVATE_EXPEDITED_RSEQ` (since Linux 5.10)
+    PrivateExpeditedRseq = membarrier_cmd::MEMBARRIER_CMD_PRIVATE_EXPEDITED_RSEQ as _,
+    /// `MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED_RSEQ` (since Linux 5.10)
+    RegisterPrivateExpeditedRseq =
+        membarrier_cmd::MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED_RSEQ as _,
+}
+
+/// A resource value for use with [`getrlimit`], [`setrlimit`], and
+/// [`prlimit`].
+///
+/// [`getrlimit`]: crate::process::getrlimit
+/// [`setrlimit`]: crate::process::setrlimit
+/// [`prlimit`]: crate::process::prlimit
+#[derive(Copy, Clone, Debug, Eq, PartialEq)]
+#[repr(u32)]
+pub enum Resource {
+    /// `RLIMIT_CPU`
+    Cpu = linux_raw_sys::general::RLIMIT_CPU,
+    /// `RLIMIT_FSIZE`
+    Fsize = linux_raw_sys::general::RLIMIT_FSIZE,
+    /// `RLIMIT_DATA`
+    Data = linux_raw_sys::general::RLIMIT_DATA,
+    /// `RLIMIT_STACK`
+    Stack = linux_raw_sys::general::RLIMIT_STACK,
+    /// `RLIMIT_CORE`
+    Core = linux_raw_sys::general::RLIMIT_CORE,
+    /// `RLIMIT_RSS`
+    Rss = linux_raw_sys::general::RLIMIT_RSS,
+    /// `RLIMIT_NPROC`
+    Nproc = linux_raw_sys::general::RLIMIT_NPROC,
+    /// `RLIMIT_NOFILE`
+    Nofile = linux_raw_sys::general::RLIMIT_NOFILE,
+    /// `RLIMIT_MEMLOCK`
+    Memlock = linux_raw_sys::general::RLIMIT_MEMLOCK,
+    /// `RLIMIT_AS`
+    As = linux_raw_sys::general::RLIMIT_AS,
+    /// `RLIMIT_LOCKS`
+    Locks = linux_raw_sys::general::RLIMIT_LOCKS,
+    /// `RLIMIT_SIGPENDING`
+    Sigpending = linux_raw_sys::general::RLIMIT_SIGPENDING,
+    /// `RLIMIT_MSGQUEUE`
+    Msgqueue = linux_raw_sys::general::RLIMIT_MSGQUEUE,
+    /// `RLIMIT_NICE`
+    Nice = linux_raw_sys::general::RLIMIT_NICE,
+    /// `RLIMIT_RTPRIO`
+    Rtprio = linux_raw_sys::general::RLIMIT_RTPRIO,
+    /// `RLIMIT_RTTIME`
+    Rttime = linux_raw_sys::general::RLIMIT_RTTIME,
+}
+
+/// A signal number for use with [`kill_process`] and [`kill_process_group`].
+///
+/// [`kill_process`]: crate::process::kill_process
+/// [`kill_process_group`]: crate::process::kill_process_group
+#[derive(Copy, Clone, Debug, Eq, PartialEq)]
+#[repr(u32)]
+pub enum Signal {
+    /// `SIGHUP`
+    Hup = linux_raw_sys::general::SIGHUP,
+    /// `SIGINT`
+    Int = linux_raw_sys::general::SIGINT,
+    /// `SIGQUIT`
+    Quit = linux_raw_sys::general::SIGQUIT,
+    /// `SIGILL`
+    Ill = linux_raw_sys::general::SIGILL,
+    /// `SIGTRAP`
+    Trap = linux_raw_sys::general::SIGTRAP,
+    /// `SIGABRT`, aka `SIGIOT`
+    #[doc(alias = "Iot")]
+    #[doc(alias = "Abrt")]
+    Abort = linux_raw_sys::general::SIGABRT,
+    /// `SIGBUS`
+    Bus = linux_raw_sys::general::SIGBUS,
+    /// `SIGFPE`
+    Fpe = linux_raw_sys::general::SIGFPE,
+    /// `SIGKILL`
+    Kill = linux_raw_sys::general::SIGKILL,
+    /// `SIGUSR1`
+    Usr1 = linux_raw_sys::general::SIGUSR1,
+    /// `SIGSEGV`
+    Segv = linux_raw_sys::general::SIGSEGV,
+    /// `SIGUSR2`
+    Usr2 = linux_raw_sys::general::SIGUSR2,
+    /// `SIGPIPE`
+    Pipe = linux_raw_sys::general::SIGPIPE,
+    /// `SIGALRM`
+    #[doc(alias = "Alrm")]
+    Alarm = linux_raw_sys::general::SIGALRM,
+    /// `SIGTERM`
+    Term = linux_raw_sys::general::SIGTERM,
+    /// `SIGSTKFLT`
+    #[cfg(not(any(target_arch = "mips", target_arch = "mips64")))]
+    Stkflt = linux_raw_sys::general::SIGSTKFLT,
+    /// `SIGCHLD`
+    #[doc(alias = "Chld")]
+    Child = linux_raw_sys::general::SIGCHLD,
+    /// `SIGCONT`
+    Cont = linux_raw_sys::general::SIGCONT,
+    /// `SIGSTOP`
+    Stop = linux_raw_sys::general::SIGSTOP,
+    /// `SIGTSTP`
+    Tstp = linux_raw_sys::general::SIGTSTP,
+    /// `SIGTTIN`
+    Ttin = linux_raw_sys::general::SIGTTIN,
+    /// `SIGTTOU`
+    Ttou = linux_raw_sys::general::SIGTTOU,
+    /// `SIGURG`
+    Urg = linux_raw_sys::general::SIGURG,
+    /// `SIGXCPU`
+    Xcpu = linux_raw_sys::general::SIGXCPU,
+    /// `SIGXFSZ`
+    Xfsz = linux_raw_sys::general::SIGXFSZ,
+    /// `SIGVTALRM`
+    #[doc(alias = "Vtalrm")]
+    Vtalarm = linux_raw_sys::general::SIGVTALRM,
+    /// `SIGPROF`
+    Prof = linux_raw_sys::general::SIGPROF,
+    /// `SIGWINCH`
+    Winch = linux_raw_sys::general::SIGWINCH,
+    /// `SIGIO`, aka `SIGPOLL`
+    #[doc(alias = "Poll")]
+    Io = linux_raw_sys::general::SIGIO,
+    /// `SIGPWR`
+    #[doc(alias = "Pwr")]
+    Power = linux_raw_sys::general::SIGPWR,
+    /// `SIGSYS`, aka `SIGUNUSED`
+    #[doc(alias = "Unused")]
+    Sys = linux_raw_sys::general::SIGSYS,
+    /// `SIGRTMIN`
+    Rtmin = linux_raw_sys::general::SIGRTMIN,
+}
+
+impl Signal {
+    /// Convert a raw signal number into a `Signal`, if possible.
+    pub fn from_raw(sig: i32) -> Option<Self> {
+        match sig as _ {
+            linux_raw_sys::general::SIGHUP => Some(Self::Hup),
+            linux_raw_sys::general::SIGINT => Some(Self::Int),
+            linux_raw_sys::general::SIGQUIT => Some(Self::Quit),
+            linux_raw_sys::general::SIGILL => Some(Self::Ill),
+            linux_raw_sys::general::SIGTRAP => Some(Self::Trap),
+            linux_raw_sys::general::SIGABRT => Some(Self::Abort),
+            linux_raw_sys::general::SIGBUS => Some(Self::Bus),
+            linux_raw_sys::general::SIGFPE => Some(Self::Fpe),
+            linux_raw_sys::general::SIGKILL => Some(Self::Kill),
+            linux_raw_sys::general::SIGUSR1 => Some(Self::Usr1),
+            linux_raw_sys::general::SIGSEGV => Some(Self::Segv),
+            linux_raw_sys::general::SIGUSR2 => Some(Self::Usr2),
+            linux_raw_sys::general::SIGPIPE => Some(Self::Pipe),
+            linux_raw_sys::general::SIGALRM => Some(Self::Alarm),
+            linux_raw_sys::general::SIGTERM => Some(Self::Term),
+            #[cfg(not(any(target_arch = "mips", target_arch = "mips64")))]
+            linux_raw_sys::general::SIGSTKFLT => Some(Self::Stkflt),
+            linux_raw_sys::general::SIGCHLD => Some(Self::Child),
+            linux_raw_sys::general::SIGCONT => Some(Self::Cont),
+            linux_raw_sys::general::SIGSTOP => Some(Self::Stop),
+            linux_raw_sys::general::SIGTSTP => Some(Self::Tstp),
+            linux_raw_sys::general::SIGTTIN => Some(Self::Ttin),
+            linux_raw_sys::general::SIGTTOU => Some(Self::Ttou),
+            linux_raw_sys::general::SIGURG => Some(Self::Urg),
+            linux_raw_sys::general::SIGXCPU => Some(Self::Xcpu),
+            linux_raw_sys::general::SIGXFSZ => Some(Self::Xfsz),
+            linux_raw_sys::general::SIGVTALRM => Some(Self::Vtalarm),
+            linux_raw_sys::general::SIGPROF => Some(Self::Prof),
+            linux_raw_sys::general::SIGWINCH => Some(Self::Winch),
+            linux_raw_sys::general::SIGIO => Some(Self::Io),
+            linux_raw_sys::general::SIGPWR => Some(Self::Power),
+            linux_raw_sys::general::SIGSYS => Some(Self::Sys),
+            linux_raw_sys::general::SIGRTMIN => Some(Self::Rtmin),
+            _ => None,
+        }
+    }
+}
+
+/// `EXIT_SUCCESS`
+pub const EXIT_SUCCESS: c::c_int = 0;
+/// `EXIT_FAILURE`
+pub const EXIT_FAILURE: c::c_int = 1;
+/// The status value of a child terminated with `SIGABRT`.
+pub const EXIT_SIGNALED_SIGABRT: c::c_int = 128 + linux_raw_sys::general::SIGABRT as i32;
+
+/// A process identifier as a raw integer.
+pub type RawPid = u32;
+/// A non-zero process identifier as a raw non-zero integer.
+pub type RawNonZeroPid = core::num::NonZeroU32;
+/// A group identifier as a raw integer.
+pub type RawGid = u32;
+/// A user identifier as a raw integer.
+pub type RawUid = u32;
+/// A CPU identifier as a raw integer.
+pub type RawCpuid = u32;
+
+pub(crate) type RawUname = linux_raw_sys::general::new_utsname;
+
+#[repr(C)]
+#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
+pub(crate) struct RawCpuSet {
+    #[cfg(all(target_pointer_width = "32", not(target_arch = "x86_64")))]
+    pub(crate) bits: [u32; 32],
+    #[cfg(not(all(target_pointer_width = "32", not(target_arch = "x86_64"))))]
+    pub(crate) bits: [u64; 16],
+}
+
+#[inline]
+pub(crate) fn raw_cpu_set_new() -> RawCpuSet {
+    #[cfg(all(target_pointer_width = "32", not(target_arch = "x86_64")))]
+    {
+        RawCpuSet { bits: [0; 32] }
+    }
+    #[cfg(not(all(target_pointer_width = "32", not(target_arch = "x86_64"))))]
+    {
+        RawCpuSet { bits: [0; 16] }
+    }
+}
+
+pub(crate) const CPU_SETSIZE: usize = 8 * core::mem::size_of::<RawCpuSet>();
diff --git a/vendor/rustix/src/imp/linux_raw/process/wait.rs b/vendor/rustix/src/imp/linux_raw/process/wait.rs
new file mode 100644
index 000000000..701b4ac0c
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/process/wait.rs
@@ -0,0 +1,39 @@
+// The functions replacing the C macros use the same names as in libc.
+#![allow(non_snake_case)]
+
+pub(crate) use linux_raw_sys::general::{WCONTINUED, WNOHANG, WUNTRACED};
+
+#[inline]
+pub(crate) fn WIFSTOPPED(status: u32) -> bool {
+    (status & 0xff) == 0x7f
+}
+
+#[inline]
+pub(crate) fn WSTOPSIG(status: u32) -> u32 {
+    (status >> 8) & 0xff
+}
+
+#[inline]
+pub(crate) fn WIFCONTINUED(status: u32) -> bool {
+    status == 0xffff
+}
+
+#[inline]
+pub(crate) fn WIFSIGNALED(status: u32) -> bool {
+    ((status & 0x7f) + 1) as i8 >= 2
+}
+
+#[inline]
+pub(crate) fn WTERMSIG(status: u32) -> u32 {
+    status & 0x7f
+}
+
+#[inline]
+pub(crate) fn WIFEXITED(status: u32) -> bool {
+    (status & 0x7f) == 0
+}
+
+#[inline]
+pub(crate) fn WEXITSTATUS(status: u32) -> u32 {
+    (status >> 8) & 0xff
+}
diff --git a/vendor/rustix/src/imp/linux_raw/rand/mod.rs b/vendor/rustix/src/imp/linux_raw/rand/mod.rs
new file mode 100644
index 000000000..1e0181a99
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/rand/mod.rs
@@ -0,0 +1,2 @@
+pub(crate) mod syscalls;
+pub(crate) mod types;
diff --git a/vendor/rustix/src/imp/linux_raw/rand/syscalls.rs b/vendor/rustix/src/imp/linux_raw/rand/syscalls.rs
new file mode 100644
index 000000000..2b5ca28e5
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/rand/syscalls.rs
@@ -0,0 +1,17 @@
+//! linux_raw syscalls supporting `rustix::rand`.
+//!
+//! # Safety
+//!
+//! See the `rustix::imp` module documentation for details.
+#![allow(unsafe_code)]
+#![allow(clippy::undocumented_unsafe_blocks)]
+
+use super::super::conv::{ret_usize, slice_mut};
+use crate::io;
+use crate::rand::GetRandomFlags;
+
+#[inline]
+pub(crate) fn getrandom(buf: &mut [u8], flags: GetRandomFlags) -> io::Result<usize> {
+    let (buf_addr_mut, buf_len) = slice_mut(buf);
+    unsafe { ret_usize(syscall!(__NR_getrandom, buf_addr_mut, buf_len, flags)) }
+}
diff --git a/vendor/rustix/src/imp/linux_raw/rand/types.rs b/vendor/rustix/src/imp/linux_raw/rand/types.rs
new file mode 100644
index 000000000..75f17443e
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/rand/types.rs
@@ -0,0 +1,15 @@
+use bitflags::bitflags;
+
+bitflags! {
+    /// `GRND_*` flags for use with [`getrandom`].
+    ///
+    /// [`getrandom`]: crate::rand::getrandom
+    pub struct GetRandomFlags: u32 {
+        /// `GRND_RANDOM`
+        const RANDOM = linux_raw_sys::general::GRND_RANDOM;
+        /// `GRND_NONBLOCK`
+        const NONBLOCK = linux_raw_sys::general::GRND_NONBLOCK;
+        /// `GRND_INSECURE`
+        const INSECURE = linux_raw_sys::general::GRND_INSECURE;
+    }
+}
diff --git a/vendor/rustix/src/imp/linux_raw/reg.rs b/vendor/rustix/src/imp/linux_raw/reg.rs
new file mode 100644
index 000000000..afe99c5f4
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/reg.rs
@@ -0,0 +1,258 @@
+//! Encapsulation for system call arguments and return values.
+//!
+//! The inline-asm and outline-asm code paths do some amount of reordering
+//! of arguments; to ensure that we don't accidentally misroute an argument
+//! or return value, we use distinct types for each argument index and
+//! return value.
+//!
+//! # Safety
+//!
+//! The `ToAsm` and `FromAsm` traits are unsafe to use; they should only be
+//! used by the syscall code which executes actual syscall machine
+//! instructions.
+
+#![allow(unsafe_code)]
+
+use super::c;
+use super::fd::RawFd;
+use core::marker::PhantomData;
+
+pub(super) trait ToAsm: private::Sealed {
+    /// Convert `self` to a `usize` ready to be passed to a syscall
+    /// machine instruction.
+    ///
+    /// # Safety
+    ///
+    /// This should be used immediately before the syscall instruction, and
+    /// the returned value shouldn't be used for any other purpose.
+    #[must_use]
+    unsafe fn to_asm(self) -> *mut Opaque;
+}
+
+pub(super) trait FromAsm: private::Sealed {
+    /// Convert `raw` from a value produced by a syscall machine instruction
+    /// into a `Self`.
+    ///
+    /// # Safety
+    ///
+    /// This should be used immediately after the syscall instruction, and
+    /// the operand value shouldn't be used for any other purpose.
+    #[must_use]
+    unsafe fn from_asm(raw: *mut Opaque) -> Self;
+}
+
+/// To preserve provenance, syscall arguments and return values are passed as
+/// pointer types. They need a type to point to, so we define a custom private
+/// type, to prevent it from being used for anything else.
+#[repr(transparent)]
+pub(super) struct Opaque(c::c_void);
+
+// Argument numbers.
+pub(super) struct A0(());
+pub(super) struct A1(());
+pub(super) struct A2(());
+pub(super) struct A3(());
+pub(super) struct A4(());
+pub(super) struct A5(());
+#[cfg(target_arch = "mips")]
+pub(super) struct A6(());
+#[cfg(target_arch = "x86")]
+pub(super) struct SocketArg;
+
+pub(super) trait ArgNumber: private::Sealed {}
+impl ArgNumber for A0 {}
+impl ArgNumber for A1 {}
+impl ArgNumber for A2 {}
+impl ArgNumber for A3 {}
+impl ArgNumber for A4 {}
+impl ArgNumber for A5 {}
+#[cfg(target_arch = "mips")]
+impl ArgNumber for A6 {}
+#[cfg(target_arch = "x86")]
+impl ArgNumber for SocketArg {}
+
+// Return value numbers.
+pub(super) struct R0(());
+
+pub(super) trait RetNumber: private::Sealed {}
+impl RetNumber for R0 {}
+
+/// Syscall arguments use register-sized types. We use a newtype to
+/// discourage accidental misuse of the raw integer values.
+///
+/// This type doesn't implement `Clone` or `Copy`; it should be used exactly
+/// once. And it has a lifetime to ensure that it doesn't outlive any resources
+/// it might be pointing to.
+#[repr(transparent)]
+#[must_use]
+pub(super) struct ArgReg<'a, Num: ArgNumber> {
+    raw: *mut Opaque,
+    _phantom: PhantomData<(&'a (), Num)>,
+}
+
+impl<'a, Num: ArgNumber> ToAsm for ArgReg<'a, Num> {
+    #[inline]
+    unsafe fn to_asm(self) -> *mut Opaque {
+        self.raw
+    }
+}
+
+/// Syscall return values use register-sized types. We use a newtype to
+/// discourage accidental misuse of the raw integer values.
+///
+/// This type doesn't implement `Clone` or `Copy`; it should be used exactly
+/// once.
+#[repr(transparent)]
+#[must_use]
+pub(super) struct RetReg<Num: RetNumber> {
+    raw: *mut Opaque,
+    _phantom: PhantomData<Num>,
+}
+
+impl<Num: RetNumber> RetReg<Num> {
+    #[inline]
+    pub(super) fn decode_usize(self) -> usize {
+        debug_assert!(!(-4095..0).contains(&(self.raw as isize)));
+        self.raw as usize
+    }
+
+    #[inline]
+    pub(super) fn decode_raw_fd(self) -> RawFd {
+        let bits = self.decode_usize();
+        let raw_fd = bits as RawFd;
+
+        // Converting `raw` to `RawFd` should be lossless.
+        debug_assert_eq!(raw_fd as usize, bits);
+
+        raw_fd
+    }
+
+    #[inline]
+    pub(super) fn decode_c_int(self) -> c::c_int {
+        let bits = self.decode_usize();
+        let c_int_ = bits as c::c_int;
+
+        // Converting `raw` to `c_int` should be lossless.
+        debug_assert_eq!(c_int_ as usize, bits);
+
+        c_int_
+    }
+
+    #[inline]
+    pub(super) fn decode_c_uint(self) -> c::c_uint {
+        let bits = self.decode_usize();
+        let c_uint_ = bits as c::c_uint;
+
+        // Converting `raw` to `c_uint` should be lossless.
+        debug_assert_eq!(c_uint_ as usize, bits);
+
+        c_uint_
+    }
+
+    #[inline]
+    pub(super) fn decode_void_star(self) -> *mut c::c_void {
+        self.raw.cast()
+    }
+
+    #[cfg(target_pointer_width = "64")]
+    #[inline]
+    pub(super) fn decode_u64(self) -> u64 {
+        self.decode_usize() as u64
+    }
+
+    #[inline]
+    pub(super) fn decode_void(self) {
+        let ignore = self.decode_usize();
+        debug_assert_eq!(ignore, 0);
+    }
+
+    #[inline]
+    pub(super) fn decode_error_code(self) -> u16 {
+        let bits = self.raw as usize;
+
+        // `raw` must be in `-4095..0`. Linux always returns errors in
+        // `-4095..0`, and we double-check it here.
+        debug_assert!((-4095..0).contains(&(bits as isize)));
+
+        bits as u16
+    }
+
+    #[inline]
+    pub(super) fn is_nonzero(&self) -> bool {
+        !self.raw.is_null()
+    }
+
+    #[inline]
+    pub(super) fn is_negative(&self) -> bool {
+        (self.raw as isize) < 0
+    }
+
+    #[inline]
+    pub(super) fn is_in_range(&self, range: core::ops::Range<isize>) -> bool {
+        range.contains(&(self.raw as isize))
+    }
+}
+
+impl<Num: RetNumber> FromAsm for RetReg<Num> {
+    #[inline]
+    unsafe fn from_asm(raw: *mut Opaque) -> Self {
+        Self {
+            raw,
+            _phantom: PhantomData,
+        }
+    }
+}
+
+#[repr(transparent)]
+pub(super) struct SyscallNumber<'a> {
+    nr: usize,
+    _phantom: PhantomData<&'a ()>,
+}
+
+impl<'a> ToAsm for SyscallNumber<'a> {
+    #[inline]
+    unsafe fn to_asm(self) -> *mut Opaque {
+        self.nr as usize as *mut Opaque
+    }
+}
+
+/// Encode a system call argument as an `ArgReg`.
+#[inline]
+pub(super) fn raw_arg<'a, Num: ArgNumber>(raw: *mut Opaque) -> ArgReg<'a, Num> {
+    ArgReg {
+        raw,
+        _phantom: PhantomData,
+    }
+}
+
+/// Encode a system call number (a `__NR_*` constant) as a `SyscallNumber`.
+#[inline]
+pub(super) const fn nr<'a>(nr: u32) -> SyscallNumber<'a> {
+    SyscallNumber {
+        nr: nr as usize,
+        _phantom: PhantomData,
+    }
+}
+
+/// Seal our various traits using the technique documented [here].
+///
+/// [here]: https://rust-lang.github.io/api-guidelines/future-proofing.html
+mod private {
+    pub trait Sealed {}
+
+    // Implement for those same types, but no others.
+    impl<'a, Num: super::ArgNumber> Sealed for super::ArgReg<'a, Num> {}
+    impl<Num: super::RetNumber> Sealed for super::RetReg<Num> {}
+    impl<'a> Sealed for super::SyscallNumber<'a> {}
+    impl Sealed for super::A0 {}
+    impl Sealed for super::A1 {}
+    impl Sealed for super::A2 {}
+    impl Sealed for super::A3 {}
+    impl Sealed for super::A4 {}
+    impl Sealed for super::A5 {}
+    #[cfg(target_arch = "mips")]
+    impl Sealed for super::A6 {}
+    #[cfg(target_arch = "x86")]
+    impl Sealed for super::SocketArg {}
+    impl Sealed for super::R0 {}
+}
diff --git a/vendor/rustix/src/imp/linux_raw/runtime/mod.rs b/vendor/rustix/src/imp/linux_raw/runtime/mod.rs
new file mode 100644
index 000000000..0b48649ce
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/runtime/mod.rs
@@ -0,0 +1,2 @@
+pub(crate) mod syscalls;
+pub(crate) mod tls;
diff --git a/vendor/rustix/src/imp/linux_raw/runtime/syscalls.rs b/vendor/rustix/src/imp/linux_raw/runtime/syscalls.rs
new file mode 100644
index 000000000..49a29b2a2
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/runtime/syscalls.rs
@@ -0,0 +1,104 @@
+//! linux_raw syscalls supporting `rustix::runtime`.
+//!
+//! # Safety
+//!
+//! See the `rustix::imp` module documentation for details.
+#![allow(unsafe_code)]
+#![allow(clippy::undocumented_unsafe_blocks)]
+
+use super::super::c;
+#[cfg(target_arch = "x86")]
+use super::super::conv::by_mut;
+use super::super::conv::{c_int, c_uint, ret, ret_c_uint, ret_error, ret_usize_infallible, zero};
+use crate::fd::BorrowedFd;
+use crate::ffi::CStr;
+use crate::fs::AtFlags;
+use crate::io;
+use crate::process::{Pid, RawNonZeroPid};
+use linux_raw_sys::general::{__kernel_pid_t, PR_SET_NAME, SIGCHLD};
+#[cfg(target_arch = "x86_64")]
+use {super::super::conv::ret_infallible, linux_raw_sys::general::ARCH_SET_FS};
+
+#[inline]
+pub(crate) unsafe fn fork() -> io::Result<Option<Pid>> {
+    let pid = ret_c_uint(syscall_readonly!(
+        __NR_clone,
+        c_uint(SIGCHLD),
+        zero(),
+        zero(),
+        zero(),
+        zero()
+    ))?;
+    Ok(Pid::from_raw(pid))
+}
+
+pub(crate) unsafe fn execveat(
+    dirfd: BorrowedFd<'_>,
+    path: &CStr,
+    args: *const *const u8,
+    env_vars: *const *const u8,
+    flags: AtFlags,
+) -> io::Errno {
+    ret_error(syscall_readonly!(
+        __NR_execveat,
+        dirfd,
+        path,
+        args,
+        env_vars,
+        flags
+    ))
+}
+
+pub(crate) unsafe fn execve(
+    path: &CStr,
+    args: *const *const u8,
+    env_vars: *const *const u8,
+) -> io::Errno {
+    ret_error(syscall_readonly!(__NR_execve, path, args, env_vars))
+}
+
+pub(crate) mod tls {
+    #[cfg(target_arch = "x86")]
+    use super::super::tls::UserDesc;
+    use super::*;
+
+    #[cfg(target_arch = "x86")]
+    #[inline]
+    pub(crate) unsafe fn set_thread_area(u_info: &mut UserDesc) -> io::Result<()> {
+        ret(syscall!(__NR_set_thread_area, by_mut(u_info)))
+    }
+
+    #[cfg(target_arch = "arm")]
+    #[inline]
+    pub(crate) unsafe fn arm_set_tls(data: *mut c::c_void) -> io::Result<()> {
+        ret(syscall_readonly!(__ARM_NR_set_tls, data))
+    }
+
+    #[cfg(target_arch = "x86_64")]
+    #[inline]
+    pub(crate) unsafe fn set_fs(data: *mut c::c_void) {
+        ret_infallible(syscall_readonly!(
+            __NR_arch_prctl,
+            c_uint(ARCH_SET_FS),
+            data
+        ))
+    }
+
+    #[inline]
+    pub(crate) unsafe fn set_tid_address(data: *mut c::c_void) -> Pid {
+        let tid: i32 =
+            ret_usize_infallible(syscall_readonly!(__NR_set_tid_address, data)) as __kernel_pid_t;
+        debug_assert_ne!(tid, 0);
+        Pid::from_raw_nonzero(RawNonZeroPid::new_unchecked(tid as u32))
+    }
+
+    #[inline]
+    pub(crate) unsafe fn set_thread_name(name: &CStr) -> io::Result<()> {
+        ret(syscall_readonly!(__NR_prctl, c_uint(PR_SET_NAME), name))
+    }
+
+    #[inline]
+    pub(crate) fn exit_thread(code: c::c_int) -> ! {
+        unsafe { syscall_noreturn!(__NR_exit, c_int(code)) }
+    }
+}
diff --git a/vendor/rustix/src/imp/linux_raw/runtime/tls.rs b/vendor/rustix/src/imp/linux_raw/runtime/tls.rs
new file mode 100644
index 000000000..63eed9bbd
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/runtime/tls.rs
@@ -0,0 +1,62 @@
+#![allow(unsafe_code)]
+
+use super::super::c;
+use super::super::elf::*;
+use super::super::param::auxv::exe_phdrs_slice;
+use core::ptr::null;
+
+/// For use with [`set_thread_area`].
+///
+/// [`set_thread_area`]: crate::runtime::set_thread_area
+#[cfg(target_arch = "x86")]
+pub type UserDesc = linux_raw_sys::general::user_desc;
+
+pub(crate) fn startup_tls_info() -> StartupTlsInfo {
+    let mut base = null();
+    let mut tls_phdr = null();
+    let mut stack_size = 0;
+
+    let phdrs = exe_phdrs_slice();
+
+    // Safety: We assume the phdr array pointer and length the kernel provided
+    // to the process describe a valid phdr array.
+    unsafe {
+        for phdr in phdrs {
+            match (*phdr).p_type {
+                PT_PHDR => {
+                    base = phdrs
+                        .as_ptr()
+                        .cast::<u8>()
+                        .offset(-((*phdr).p_vaddr as isize))
+                }
+                PT_TLS => tls_phdr = phdr,
+                PT_GNU_STACK => stack_size = (*phdr).p_memsz,
+                _ => {}
+            }
+        }
+
+        StartupTlsInfo {
+            addr: base.cast::<u8>().add((*tls_phdr).p_vaddr).cast(),
+            mem_size: (*tls_phdr).p_memsz,
+            file_size: (*tls_phdr).p_filesz,
+            align: (*tls_phdr).p_align,
+            stack_size,
+        }
+    }
+}
+
+/// The values returned from [`startup_tls_info`].
+///
+/// [`startup_tls_info`]: crate::runtime::startup_tls_info
+pub struct StartupTlsInfo {
+    /// The base address of the TLS segment.
+    pub addr: *const c::c_void,
+    /// The size of the memory region.
+    pub mem_size: usize,
+    /// The size beyond which all memory is zero-initialized.
+    pub file_size: usize,
+    /// The required alignment for the TLS segment.
+    pub align: usize,
+    /// The requested minimum size for stacks.
+    pub stack_size: usize,
+}
diff --git a/vendor/rustix/src/imp/linux_raw/termios/mod.rs b/vendor/rustix/src/imp/linux_raw/termios/mod.rs
new file mode 100644
index 000000000..1e0181a99
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/termios/mod.rs
@@ -0,0 +1,2 @@
+pub(crate) mod syscalls;
+pub(crate) mod types;
diff --git a/vendor/rustix/src/imp/linux_raw/termios/syscalls.rs b/vendor/rustix/src/imp/linux_raw/termios/syscalls.rs
new file mode 100644
index 000000000..b62a033e0
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/termios/syscalls.rs
@@ -0,0 +1,249 @@
+//! linux_raw syscalls supporting `rustix::termios`.
+//!
+//! # Safety
+//!
+//! See the `rustix::imp` module documentation for details.
+#![allow(unsafe_code)]
+#![allow(clippy::undocumented_unsafe_blocks)]
+
+use super::super::conv::{by_ref, c_uint, ret};
+use crate::fd::BorrowedFd;
+use crate::io;
+use crate::process::{Pid, RawNonZeroPid};
+use crate::termios::{
+    Action, OptionalActions, QueueSelector, Termios, Winsize, BRKINT, CBAUD, CS8, CSIZE, ECHO,
+    ECHONL, ICANON, ICRNL, IEXTEN, IGNBRK, IGNCR, INLCR, ISIG, ISTRIP, IXON, OPOST, PARENB, PARMRK,
+    VMIN, VTIME,
+};
+#[cfg(feature = "procfs")]
+use crate::{ffi::CStr, fs::FileType, path::DecInt};
+use core::mem::MaybeUninit;
+use linux_raw_sys::general::__kernel_pid_t;
+use linux_raw_sys::ioctl::{
+    TCFLSH, TCGETS, TCSBRK, TCSETS, TCXONC, TIOCGPGRP, TIOCGSID, TIOCGWINSZ, TIOCSPGRP, TIOCSWINSZ,
+};
+
+#[inline]
+pub(crate) fn tcgetwinsize(fd: BorrowedFd<'_>) -> io::Result<Winsize> {
+    unsafe {
+        let mut result = MaybeUninit::<Winsize>::uninit();
+        ret(syscall!(__NR_ioctl, fd, c_uint(TIOCGWINSZ), &mut result))
+            .map(|()| result.assume_init())
+    }
+}
+
+#[inline]
+pub(crate) fn tcgetattr(fd: BorrowedFd<'_>) -> io::Result<Termios> {
+    unsafe {
+        let mut result = MaybeUninit::<Termios>::uninit();
+        ret(syscall!(__NR_ioctl, fd, c_uint(TCGETS), &mut result)).map(|()| result.assume_init())
+    }
+}
+
+#[inline]
+pub(crate) fn tcgetpgrp(fd: BorrowedFd<'_>) -> io::Result<Pid> {
+    unsafe {
+        let mut result = MaybeUninit::<__kernel_pid_t>::uninit();
+        ret(syscall!(__NR_ioctl, fd, c_uint(TIOCGPGRP), &mut result)).map(|()| {
+            let pid = result.assume_init();
+            debug_assert!(pid > 0);
+            Pid::from_raw_nonzero(RawNonZeroPid::new_unchecked(pid as u32))
+        })
+    }
+}
+
+#[inline]
+pub(crate) fn tcsetattr(
+    fd: BorrowedFd,
+    optional_actions: OptionalActions,
+    termios: &Termios,
+) -> io::Result<()> {
+    // Translate from `optional_actions` into an ioctl request code. On MIPS,
+    // `optional_actions` already has `TCGETS` added to it.
+    let request = if cfg!(any(target_arch = "mips", target_arch = "mips64")) {
+        optional_actions as u32
+    } else {
+        TCSETS + optional_actions as u32
+    };
+    unsafe {
+        ret(syscall_readonly!(
+            __NR_ioctl,
+            fd,
+            c_uint(request as u32),
+            by_ref(termios)
+        ))
+    }
+}
+
+#[inline]
+pub(crate) fn tcsendbreak(fd: BorrowedFd) -> io::Result<()> {
+    unsafe { ret(syscall_readonly!(__NR_ioctl, fd, c_uint(TCSBRK), c_uint(0))) }
+}
+
+#[inline]
+pub(crate) fn tcdrain(fd: BorrowedFd) -> io::Result<()> {
+    unsafe { ret(syscall_readonly!(__NR_ioctl, fd, c_uint(TCSBRK), c_uint(1))) }
+}
+
+#[inline]
+pub(crate) fn tcflush(fd: BorrowedFd, queue_selector: QueueSelector) -> io::Result<()> {
+    unsafe {
+        ret(syscall_readonly!(
+            __NR_ioctl,
+            fd,
+            c_uint(TCFLSH),
+            c_uint(queue_selector as u32)
+        ))
+    }
+}
+
+#[inline]
+pub(crate) fn tcflow(fd: BorrowedFd, action: Action) -> io::Result<()> {
+    unsafe {
+        ret(syscall_readonly!(
+            __NR_ioctl,
+            fd,
+            c_uint(TCXONC),
+            c_uint(action as u32)
+        ))
+    }
+}
+
+#[inline]
+pub(crate) fn tcgetsid(fd: BorrowedFd) -> io::Result<Pid> {
+    unsafe {
+        let mut result = MaybeUninit::<__kernel_pid_t>::uninit();
+        ret(syscall!(__NR_ioctl, fd, c_uint(TIOCGSID), &mut result)).map(|()| {
+            let pid = result.assume_init();
+            debug_assert!(pid > 0);
+            Pid::from_raw_nonzero(RawNonZeroPid::new_unchecked(pid as u32))
+        })
+    }
+}
+
+#[inline]
+pub(crate) fn tcsetwinsize(fd: BorrowedFd, winsize: Winsize) -> io::Result<()> {
+    unsafe {
+        ret(syscall!(
+            __NR_ioctl,
+            fd,
+            c_uint(TIOCSWINSZ),
+            by_ref(&winsize)
+        ))
+    }
+}
+
+#[inline]
+pub(crate) fn tcsetpgrp(fd: BorrowedFd<'_>, pid: Pid) -> io::Result<()> {
+    unsafe { ret(syscall!(__NR_ioctl, fd, c_uint(TIOCSPGRP), pid)) }
+}
+
+#[inline]
+#[must_use]
+#[allow(clippy::missing_const_for_fn)]
+pub(crate) fn cfgetospeed(termios: &Termios) -> u32 {
+    termios.c_cflag & CBAUD
+}
+
+#[inline]
+#[must_use]
+#[allow(clippy::missing_const_for_fn)]
+pub(crate) fn cfgetispeed(termios: &Termios) -> u32 {
+    termios.c_cflag & CBAUD
+}
+
+#[inline]
+pub(crate) fn cfmakeraw(termios: &mut Termios) {
+    // From the Linux [`cfmakeraw` man page]:
+    //
+    // [`cfmakeraw` man page]: https://man7.org/linux/man-pages/man3/cfmakeraw.3.html
+    termios.c_iflag &= !(IGNBRK | BRKINT | PARMRK | ISTRIP | INLCR | IGNCR | ICRNL | IXON);
+    termios.c_oflag &= !OPOST;
+    termios.c_lflag &= !(ECHO | ECHONL | ICANON | ISIG | IEXTEN);
+    termios.c_cflag &= !(CSIZE | PARENB);
+    termios.c_cflag |= CS8;
+
+    // Musl and glibc also do these:
+    termios.c_cc[VMIN] = 1;
+    termios.c_cc[VTIME] = 0;
+}
+
+#[inline]
+pub(crate) fn cfsetospeed(termios: &mut Termios, speed: u32) -> io::Result<()> {
+    if (speed & !CBAUD) != 0 {
+        return Err(io::Errno::INVAL);
+    }
+    termios.c_cflag &= !CBAUD;
+    termios.c_cflag |= speed;
+    Ok(())
+}
+
+#[inline]
+pub(crate) fn cfsetispeed(termios: &mut Termios, speed: u32) -> io::Result<()> {
+    if speed == 0 {
+        return Ok(());
+    }
+    if (speed & !CBAUD) != 0 {
+        return Err(io::Errno::INVAL);
+    }
+    termios.c_cflag &= !CBAUD;
+    termios.c_cflag |= speed;
+    Ok(())
+}
+
+#[inline]
+pub(crate) fn cfsetspeed(termios: &mut Termios, speed: u32) -> io::Result<()> {
+    if (speed & !CBAUD) != 0 {
+        return Err(io::Errno::INVAL);
+    }
+    termios.c_cflag &= !CBAUD;
+    termios.c_cflag |= speed;
+    Ok(())
+}
+
+#[inline]
+pub(crate) fn isatty(fd: BorrowedFd<'_>) -> bool {
+    // On error, Linux will return either `EINVAL` (2.6.32) or `ENOTTY`
+    // (otherwise), because we assume we're never passing an invalid
+    // file descriptor (which would get `EBADF`). Either way, an error
+    // means we don't have a tty.
+    tcgetwinsize(fd).is_ok()
+}
+
+#[cfg(feature = "procfs")]
+pub(crate) fn ttyname(fd: BorrowedFd<'_>, buf: &mut [u8]) -> io::Result<usize> {
+    let fd_stat = super::super::fs::syscalls::fstat(fd)?;
+
+    // Quick check: if `fd` isn't a character device, it's not a tty.
+    if FileType::from_raw_mode(fd_stat.st_mode) != FileType::CharacterDevice {
+        return Err(crate::io::Errno::NOTTY);
+    }
+
+    // Check that `fd` is really a tty.
+    tcgetwinsize(fd)?;
+
+    // Get a fd to '/proc/self/fd'.
+    let proc_self_fd = io::proc_self_fd()?;
+
+    // Gather the ttyname by reading the 'fd' file inside 'proc_self_fd'.
+    let r =
+        super::super::fs::syscalls::readlinkat(proc_self_fd, DecInt::from_fd(&fd).as_c_str(), buf)?;
+
+    // If the number of bytes is equal to the buffer length, truncation may
+    // have occurred. This check also ensures that we have enough space for
+    // adding a NUL terminator.
+    if r == buf.len() {
+        return Err(io::Errno::RANGE);
+    }
+    buf[r] = b'\0';
+
+    // Check that the path we read refers to the same file as `fd`.
+    let path = CStr::from_bytes_with_nul(&buf[..=r]).unwrap();
+
+    let path_stat = super::super::fs::syscalls::stat(path)?;
+    if path_stat.st_dev != fd_stat.st_dev || path_stat.st_ino != fd_stat.st_ino {
+        return Err(crate::io::Errno::NODEV);
+    }
+
+    Ok(r)
+}
diff --git a/vendor/rustix/src/imp/linux_raw/termios/types.rs b/vendor/rustix/src/imp/linux_raw/termios/types.rs
new file mode 100644
index 000000000..ce8832455
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/termios/types.rs
@@ -0,0 +1,456 @@
+use super::super::c;
+
+/// `TCSA*` values for use with [`tcsetattr`].
+///
+/// [`tcsetattr`]: crate::termios::tcsetattr
+#[derive(Debug, Clone, Copy, Eq, PartialEq, Hash)]
+#[repr(u32)]
+pub enum OptionalActions {
+    /// `TCSANOW`—Make the change immediately.
+    Now = linux_raw_sys::general::TCSANOW,
+
+    /// `TCSADRAIN`—Make the change after all output has been transmitted.
+    Drain = linux_raw_sys::general::TCSADRAIN,
+
+    /// `TCSAFLUSH`—Discard any pending input and then make the change
+    /// after all output has been transmitted.
+    Flush = linux_raw_sys::general::TCSAFLUSH,
+}
+
+/// `TC*` values for use with [`tcflush`].
+///
+/// [`tcflush`]: crate::termios::tcflush
+#[derive(Debug, Clone, Copy, Eq, PartialEq, Hash)]
+#[repr(u32)]
+pub enum QueueSelector {
+    /// `TCIFLUSH`—Flush data received but not read.
+    IFlush = linux_raw_sys::general::TCIFLUSH,
+
+    /// `TCOFLUSH`—Flush data written but not transmitted.
+    OFlush = linux_raw_sys::general::TCOFLUSH,
+
+    /// `TCIOFLUSH`—`IFlush` and `OFlush` combined.
+    IOFlush = linux_raw_sys::general::TCIOFLUSH,
+}
+
+/// `TC*` values for use with [`tcflow`].
+///
+/// [`tcflow`]: crate::termios::tcflow
+#[derive(Debug, Clone, Copy, Eq, PartialEq, Hash)]
+#[repr(u32)]
+pub enum Action {
+    /// `TCOOFF`—Suspend output.
+    OOff = linux_raw_sys::general::TCOOFF,
+
+    /// `TCOON`—Restart suspended output.
+    OOn = linux_raw_sys::general::TCOON,
+
+    /// `TCIOFF`—Transmits a STOP byte.
+    IOff = linux_raw_sys::general::TCIOFF,
+
+    /// `TCION`—Transmits a START byte.
+    IOn = linux_raw_sys::general::TCION,
+}
+
+/// `struct termios` for use with [`tcgetattr`].
+///
+/// [`tcgetattr`]: crate::termios::tcgetattr
+pub type Termios = linux_raw_sys::general::termios;
+
+/// `struct winsize` for use with [`tcgetwinsize`].
+///
+/// [`tcgetwinsize`]: crate::termios::tcgetwinsize
+pub type Winsize = linux_raw_sys::general::winsize;
+
+/// `tcflag_t`—A type for the flags fields of [`Termios`].
+pub type Tcflag = linux_raw_sys::general::tcflag_t;
+
+/// `speed_t`—A return type for [`cfsetspeed`] and similar.
+///
+/// [`cfsetspeed`]: crate::termios::cfsetspeed
+pub type Speed = linux_raw_sys::general::speed_t;
+
+/// `VINTR`
+pub const VINTR: usize = linux_raw_sys::general::VINTR as usize;
+
+/// `VQUIT`
+pub const VQUIT: usize = linux_raw_sys::general::VQUIT as usize;
+
+/// `VERASE`
+pub const VERASE: usize = linux_raw_sys::general::VERASE as usize;
+
+/// `VKILL`
+pub const VKILL: usize = linux_raw_sys::general::VKILL as usize;
+
+/// `VEOF`
+pub const VEOF: usize = linux_raw_sys::general::VEOF as usize;
+
+/// `VTIME`
+pub const VTIME: usize = linux_raw_sys::general::VTIME as usize;
+
+/// `VMIN`
+pub const VMIN: usize = linux_raw_sys::general::VMIN as usize;
+
+/// `VSWTC`
+pub const VSWTC: usize = linux_raw_sys::general::VSWTC as usize;
+
+/// `VSTART`
+pub const VSTART: usize = linux_raw_sys::general::VSTART as usize;
+
+/// `VSTOP`
+pub const VSTOP: usize = linux_raw_sys::general::VSTOP as usize;
+
+/// `VSUSP`
+pub const VSUSP: usize = linux_raw_sys::general::VSUSP as usize;
+
+/// `VEOL`
+pub const VEOL: usize = linux_raw_sys::general::VEOL as usize;
+
+/// `VREPRINT`
+pub const VREPRINT: usize = linux_raw_sys::general::VREPRINT as usize;
+
+/// `VDISCARD`
+pub const VDISCARD: usize = linux_raw_sys::general::VDISCARD as usize;
+
+/// `VWERASE`
+pub const VWERASE: usize = linux_raw_sys::general::VWERASE as usize;
+
+/// `VLNEXT`
+pub const VLNEXT: usize = linux_raw_sys::general::VLNEXT as usize;
+
+/// `VEOL2`
+pub const VEOL2: usize = linux_raw_sys::general::VEOL2 as usize;
+
+/// `IGNBRK`
+pub const IGNBRK: c::c_uint = linux_raw_sys::general::IGNBRK;
+
+/// `BRKINT`
+pub const BRKINT: c::c_uint = linux_raw_sys::general::BRKINT;
+
+/// `IGNPAR`
+pub const IGNPAR: c::c_uint = linux_raw_sys::general::IGNPAR;
+
+/// `PARMRK`
+pub const PARMRK: c::c_uint = linux_raw_sys::general::PARMRK;
+
+/// `INPCK`
+pub const INPCK: c::c_uint = linux_raw_sys::general::INPCK;
+
+/// `ISTRIP`
+pub const ISTRIP: c::c_uint = linux_raw_sys::general::ISTRIP;
+
+/// `INLCR`
+pub const INLCR: c::c_uint = linux_raw_sys::general::INLCR;
+
+/// `IGNCR`
+pub const IGNCR: c::c_uint = linux_raw_sys::general::IGNCR;
+
+/// `ICRNL`
+pub const ICRNL: c::c_uint = linux_raw_sys::general::ICRNL;
+
+/// `IUCLC`
+pub const IUCLC: c::c_uint = linux_raw_sys::general::IUCLC;
+
+/// `IXON`
+pub const IXON: c::c_uint = linux_raw_sys::general::IXON;
+
+/// `IXANY`
+pub const IXANY: c::c_uint = linux_raw_sys::general::IXANY;
+
+/// `IXOFF`
+pub const IXOFF: c::c_uint = linux_raw_sys::general::IXOFF;
+
+/// `IMAXBEL`
+pub const IMAXBEL: c::c_uint = linux_raw_sys::general::IMAXBEL;
+
+/// `IUTF8`
+pub const IUTF8: c::c_uint = linux_raw_sys::general::IUTF8;
+
+/// `OPOST`
+pub const OPOST: c::c_uint = linux_raw_sys::general::OPOST;
+
+/// `OLCUC`
+pub const OLCUC: c::c_uint = linux_raw_sys::general::OLCUC;
+
+/// `ONLCR`
+pub const ONLCR: c::c_uint = linux_raw_sys::general::ONLCR;
+
+/// `OCRNL`
+pub const OCRNL: c::c_uint = linux_raw_sys::general::OCRNL;
+
+/// `ONOCR`
+pub const ONOCR: c::c_uint = linux_raw_sys::general::ONOCR;
+
+/// `ONLRET`
+pub const ONLRET: c::c_uint = linux_raw_sys::general::ONLRET;
+
+/// `OFILL`
+pub const OFILL: c::c_uint = linux_raw_sys::general::OFILL;
+
+/// `OFDEL`
+pub const OFDEL: c::c_uint = linux_raw_sys::general::OFDEL;
+
+/// `NLDLY`
+pub const NLDLY: c::c_uint = linux_raw_sys::general::NLDLY;
+
+/// `NL0`
+pub const NL0: c::c_uint = linux_raw_sys::general::NL0;
+
+/// `NL1`
+pub const NL1: c::c_uint = linux_raw_sys::general::NL1;
+
+/// `CRDLY`
+pub const CRDLY: c::c_uint = linux_raw_sys::general::CRDLY;
+
+/// `CR0`
+pub const CR0: c::c_uint = linux_raw_sys::general::CR0;
+
+/// `CR1`
+pub const CR1: c::c_uint = linux_raw_sys::general::CR1;
+
+/// `CR2`
+pub const CR2: c::c_uint = linux_raw_sys::general::CR2;
+
+/// `CR3`
+pub const CR3: c::c_uint = linux_raw_sys::general::CR3;
+
+/// `TABDLY`
+pub const TABDLY: c::c_uint = linux_raw_sys::general::TABDLY;
+
+/// `TAB0`
+pub const TAB0: c::c_uint = linux_raw_sys::general::TAB0;
+
+/// `TAB1`
+pub const TAB1: c::c_uint = linux_raw_sys::general::TAB1;
+
+/// `TAB2`
+pub const TAB2: c::c_uint = linux_raw_sys::general::TAB2;
+
+/// `TAB3`
+pub const TAB3: c::c_uint = linux_raw_sys::general::TAB3;
+
+/// `BSDLY`
+pub const BSDLY: c::c_uint = linux_raw_sys::general::BSDLY;
+
+/// `BS0`
+pub const BS0: c::c_uint = linux_raw_sys::general::BS0;
+
+/// `BS1`
+pub const BS1: c::c_uint = linux_raw_sys::general::BS1;
+
+/// `FFDLY`
+pub const FFDLY: c::c_uint = linux_raw_sys::general::FFDLY;
+
+/// `FF0`
+pub const FF0: c::c_uint = linux_raw_sys::general::FF0;
+
+/// `FF1`
+pub const FF1: c::c_uint = linux_raw_sys::general::FF1;
+
+/// `VTDLY`
+pub const VTDLY: c::c_uint = linux_raw_sys::general::VTDLY;
+
+/// `VT0`
+pub const VT0: c::c_uint = linux_raw_sys::general::VT0;
+
+/// `VT1`
+pub const VT1: c::c_uint = linux_raw_sys::general::VT1;
+
+/// `B0`
+pub const B0: Speed = linux_raw_sys::general::B0;
+
+/// `B50`
+pub const B50: Speed = linux_raw_sys::general::B50;
+
+/// `B75`
+pub const B75: Speed = linux_raw_sys::general::B75;
+
+/// `B110`
+pub const B110: Speed = linux_raw_sys::general::B110;
+
+/// `B134`
+pub const B134: Speed = linux_raw_sys::general::B134;
+
+/// `B150`
+pub const B150: Speed = linux_raw_sys::general::B150;
+
+/// `B200`
+pub const B200: Speed = linux_raw_sys::general::B200;
+
+/// `B300`
+pub const B300: Speed = linux_raw_sys::general::B300;
+
+/// `B600`
+pub const B600: Speed = linux_raw_sys::general::B600;
+
+/// `B1200`
+pub const B1200: Speed = linux_raw_sys::general::B1200;
+
+/// `B1800`
+pub const B1800: Speed = linux_raw_sys::general::B1800;
+
+/// `B2400`
+pub const B2400: Speed = linux_raw_sys::general::B2400;
+
+/// `B4800`
+pub const B4800: Speed = linux_raw_sys::general::B4800;
+
+/// `B9600`
+pub const B9600: Speed = linux_raw_sys::general::B9600;
+
+/// `B19200`
+pub const B19200: Speed = linux_raw_sys::general::B19200;
+
+/// `B38400`
+pub const B38400: Speed = linux_raw_sys::general::B38400;
+
+/// `B57600`
+pub const B57600: Speed = linux_raw_sys::general::B57600;
+
+/// `B115200`
+pub const B115200: Speed = linux_raw_sys::general::B115200;
+
+/// `B230400`
+pub const B230400: Speed = linux_raw_sys::general::B230400;
+
+/// `B460800`
+pub const B460800: Speed = linux_raw_sys::general::B460800;
+
+/// `B500000`
+pub const B500000: Speed = linux_raw_sys::general::B500000;
+
+/// `B576000`
+pub const B576000: Speed = linux_raw_sys::general::B576000;
+
+/// `B921600`
+pub const B921600: Speed = linux_raw_sys::general::B921600;
+
+/// `B1000000`
+pub const B1000000: Speed = linux_raw_sys::general::B1000000;
+
+/// `B1152000`
+pub const B1152000: Speed = linux_raw_sys::general::B1152000;
+
+/// `B1500000`
+pub const B1500000: Speed = linux_raw_sys::general::B1500000;
+
+/// `B2000000`
+pub const B2000000: Speed = linux_raw_sys::general::B2000000;
+
+/// `B2500000`
+pub const B2500000: Speed = linux_raw_sys::general::B2500000;
+
+/// `B3000000`
+pub const B3000000: Speed = linux_raw_sys::general::B3000000;
+
+/// `B3500000`
+pub const B3500000: Speed = linux_raw_sys::general::B3500000;
+
+/// `B4000000`
+pub const B4000000: Speed = linux_raw_sys::general::B4000000;
+
+/// `CSIZE`
+pub const CSIZE: c::c_uint = linux_raw_sys::general::CSIZE;
+
+/// `CS5`
+pub const CS5: c::c_uint = linux_raw_sys::general::CS5;
+
+/// `CS6`
+pub const CS6: c::c_uint = linux_raw_sys::general::CS6;
+
+/// `CS7`
+pub const CS7: c::c_uint = linux_raw_sys::general::CS7;
+
+/// `CS8`
+pub const CS8: c::c_uint = linux_raw_sys::general::CS8;
+
+/// `CSTOPB`
+pub const CSTOPB: c::c_uint = linux_raw_sys::general::CSTOPB;
+
+/// `CREAD`
+pub const CREAD: c::c_uint = linux_raw_sys::general::CREAD;
+
+/// `PARENB`
+pub const PARENB: c::c_uint = linux_raw_sys::general::PARENB;
+
+/// `PARODD`
+pub const PARODD: c::c_uint = linux_raw_sys::general::PARODD;
+
+/// `HUPCL`
+pub const HUPCL: c::c_uint = linux_raw_sys::general::HUPCL;
+
+/// `CLOCAL`
+pub const CLOCAL: c::c_uint = linux_raw_sys::general::CLOCAL;
+
+/// `ISIG`
+pub const ISIG: c::c_uint = linux_raw_sys::general::ISIG;
+
+/// `ICANON`—A flag for the `c_lflag` field of [`Termios`] indicating
+/// canonical mode.
+pub const ICANON: Tcflag = linux_raw_sys::general::ICANON;
+
+/// `ECHO`
+pub const ECHO: c::c_uint = linux_raw_sys::general::ECHO;
+
+/// `ECHOE`
+pub const ECHOE: c::c_uint = linux_raw_sys::general::ECHOE;
+
+/// `ECHOK`
+pub const ECHOK: c::c_uint = linux_raw_sys::general::ECHOK;
+
+/// `ECHONL`
+pub const ECHONL: c::c_uint = linux_raw_sys::general::ECHONL;
+
+/// `NOFLSH`
+pub const NOFLSH: c::c_uint = linux_raw_sys::general::NOFLSH;
+
+/// `TOSTOP`
+pub const TOSTOP: c::c_uint = linux_raw_sys::general::TOSTOP;
+
+/// `IEXTEN`
+pub const IEXTEN: c::c_uint = linux_raw_sys::general::IEXTEN;
+
+/// `EXTA`
+pub const EXTA: c::c_uint = linux_raw_sys::general::EXTA;
+
+/// `EXTB`
+pub const EXTB: c::c_uint = linux_raw_sys::general::EXTB;
+
+/// `CBAUD`
+pub const CBAUD: c::c_uint = linux_raw_sys::general::CBAUD;
+
+/// `CBAUDEX`
+pub const CBAUDEX: c::c_uint = linux_raw_sys::general::CBAUDEX;
+
+/// `CIBAUD`
+pub const CIBAUD: c::c_uint = linux_raw_sys::general::CIBAUD;
+
+/// `CMSPAR`
+pub const CMSPAR: c::c_uint = linux_raw_sys::general::CMSPAR;
+
+/// `CRTSCTS`
+pub const CRTSCTS: c::c_uint = linux_raw_sys::general::CRTSCTS;
+
+/// `XCASE`
+pub const XCASE: c::c_uint = linux_raw_sys::general::XCASE;
+
+/// `ECHOCTL`
+pub const ECHOCTL: c::c_uint = linux_raw_sys::general::ECHOCTL;
+
+/// `ECHOPRT`
+pub const ECHOPRT: c::c_uint = linux_raw_sys::general::ECHOPRT;
+
+/// `ECHOKE`
+pub const ECHOKE: c::c_uint = linux_raw_sys::general::ECHOKE;
+
+/// `FLUSHO`
+pub const FLUSHO: c::c_uint = linux_raw_sys::general::FLUSHO;
+
+/// `PENDIN`
+pub const PENDIN: c::c_uint = linux_raw_sys::general::PENDIN;
+
+/// `EXTPROC`
+pub const EXTPROC: c::c_uint = linux_raw_sys::general::EXTPROC;
+
+/// `XTABS`
+pub const XTABS: c::c_uint = linux_raw_sys::general::XTABS;
diff --git a/vendor/rustix/src/imp/linux_raw/thread/futex.rs b/vendor/rustix/src/imp/linux_raw/thread/futex.rs
new file mode 100644
index 000000000..9e087f9f1
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/thread/futex.rs
@@ -0,0 +1,39 @@
+bitflags::bitflags! {
+    /// Flags for use with [`futex`].
+    ///
+    /// [`futex`]: crate::thread::futex
+    pub struct FutexFlags: u32 {
+        /// `FUTEX_PRIVATE_FLAG`
+        const PRIVATE = linux_raw_sys::general::FUTEX_PRIVATE_FLAG;
+        /// `FUTEX_CLOCK_REALTIME`
+        const CLOCK_REALTIME = linux_raw_sys::general::FUTEX_CLOCK_REALTIME;
+    }
+}
+
+/// Operations for use with [`futex`].
+///
+/// [`futex`]: crate::thread::futex
+#[derive(Debug, Copy, Clone, Eq, PartialEq)]
+#[repr(u32)]
+pub enum FutexOperation {
+    /// `FUTEX_WAIT`
+    Wait = linux_raw_sys::general::FUTEX_WAIT,
+    /// `FUTEX_WAKE`
+    Wake = linux_raw_sys::general::FUTEX_WAKE,
+    /// `FUTEX_FD`
+    Fd = linux_raw_sys::general::FUTEX_FD,
+    /// `FUTEX_REQUEUE`
+    Requeue = linux_raw_sys::general::FUTEX_REQUEUE,
+    /// `FUTEX_CMP_REQUEUE`
+    CmpRequeue = linux_raw_sys::general::FUTEX_CMP_REQUEUE,
+    /// `FUTEX_WAKE_OP`
+    WakeOp = linux_raw_sys::general::FUTEX_WAKE_OP,
+    /// `FUTEX_LOCK_PI`
+    LockPi = linux_raw_sys::general::FUTEX_LOCK_PI,
+    /// `FUTEX_UNLOCK_PI`
+    UnlockPi = linux_raw_sys::general::FUTEX_UNLOCK_PI,
+    /// `FUTEX_TRYLOCK_PI`
+    TrylockPi = linux_raw_sys::general::FUTEX_TRYLOCK_PI,
+    /// `FUTEX_WAIT_BITSET`
+    WaitBitset = linux_raw_sys::general::FUTEX_WAIT_BITSET,
+}
diff --git a/vendor/rustix/src/imp/linux_raw/thread/mod.rs b/vendor/rustix/src/imp/linux_raw/thread/mod.rs
new file mode 100644
index 000000000..8bb80c33a
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/thread/mod.rs
@@ -0,0 +1,4 @@
+mod futex;
+pub(crate) mod syscalls;
+
+pub use futex::{FutexFlags, FutexOperation};
diff --git a/vendor/rustix/src/imp/linux_raw/thread/syscalls.rs b/vendor/rustix/src/imp/linux_raw/thread/syscalls.rs
new file mode 100644
index 000000000..600b4649d
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/thread/syscalls.rs
@@ -0,0 +1,280 @@
+//! linux_raw syscalls supporting `rustix::thread`.
+//!
+//! # Safety
+//!
+//! See the `rustix::imp` module documentation for details.
+#![allow(unsafe_code)]
+#![allow(clippy::undocumented_unsafe_blocks)]
+
+use super::super::conv::{by_ref, c_int, c_uint, ret, ret_usize, ret_usize_infallible, zero};
+use crate::io;
+use crate::process::{Pid, RawNonZeroPid};
+use crate::thread::{ClockId, FutexFlags, FutexOperation, NanosleepRelativeResult, Timespec};
+use core::mem::MaybeUninit;
+use linux_raw_sys::general::{__kernel_pid_t, __kernel_timespec, TIMER_ABSTIME};
+#[cfg(target_pointer_width = "32")]
+use {
+    core::convert::TryInto, core::ptr, linux_raw_sys::general::timespec as __kernel_old_timespec,
+};
+
+#[inline]
+pub(crate) fn clock_nanosleep_relative(
+    id: ClockId,
+    req: &__kernel_timespec,
+) -> NanosleepRelativeResult {
+    #[cfg(target_pointer_width = "32")]
+    unsafe {
+        let mut rem = MaybeUninit::<__kernel_timespec>::uninit();
+        match ret(syscall!(
+            __NR_clock_nanosleep_time64,
+            id,
+            c_int(0),
+            by_ref(req),
+            &mut rem
+        ))
+        .or_else(|err| {
+            // See the comments in `rustix_clock_gettime_via_syscall` about
+            // emulation.
+            if err == io::Errno::NOSYS {
+                clock_nanosleep_relative_old(id, req, &mut rem)
+            } else {
+                Err(err)
+            }
+        }) {
+            Ok(()) => NanosleepRelativeResult::Ok,
+            Err(io::Errno::INTR) => NanosleepRelativeResult::Interrupted(rem.assume_init()),
+            Err(err) => NanosleepRelativeResult::Err(err),
+        }
+    }
+    #[cfg(target_pointer_width = "64")]
+    unsafe {
+        let mut rem = MaybeUninit::<__kernel_timespec>::uninit();
+        match ret(syscall!(
+            __NR_clock_nanosleep,
+            id,
+            c_int(0),
+            by_ref(req),
+            &mut rem
+        )) {
+            Ok(()) => NanosleepRelativeResult::Ok,
+            Err(io::Errno::INTR) => NanosleepRelativeResult::Interrupted(rem.assume_init()),
+            Err(err) => NanosleepRelativeResult::Err(err),
+        }
+    }
+}
+
+#[cfg(target_pointer_width = "32")]
+unsafe fn clock_nanosleep_relative_old(
+    id: ClockId,
+    req: &__kernel_timespec,
+    rem: &mut MaybeUninit<__kernel_timespec>,
+) -> io::Result<()> {
+    let old_req = __kernel_old_timespec {
+        tv_sec: req.tv_sec.try_into().map_err(|_| io::Errno::INVAL)?,
+        tv_nsec: req.tv_nsec.try_into().map_err(|_| io::Errno::INVAL)?,
+    };
+    let mut old_rem = MaybeUninit::<__kernel_old_timespec>::uninit();
+    ret(syscall!(
+        __NR_clock_nanosleep,
+        id,
+        c_int(0),
+        by_ref(&old_req),
+        &mut old_rem
+    ))?;
+    let old_rem = old_rem.assume_init();
+    // TODO: With Rust 1.55, we can use MaybeUninit::write here.
+    ptr::write(
+        rem.as_mut_ptr(),
+        __kernel_timespec {
+            tv_sec: old_rem.tv_sec.into(),
+            tv_nsec: old_rem.tv_nsec.into(),
+        },
+    );
+    Ok(())
+}
+
+#[inline]
+pub(crate) fn clock_nanosleep_absolute(id: ClockId, req: &__kernel_timespec) -> io::Result<()> {
+    #[cfg(target_pointer_width = "32")]
+    unsafe {
+        ret(syscall_readonly!(
+            __NR_clock_nanosleep_time64,
+            id,
+            c_uint(TIMER_ABSTIME),
+            by_ref(req),
+            zero()
+        ))
+        .or_else(|err| {
+            // See the comments in `rustix_clock_gettime_via_syscall` about
+            // emulation.
+            if err == io::Errno::NOSYS {
+                clock_nanosleep_absolute_old(id, req)
+            } else {
+                Err(err)
+            }
+        })
+    }
+    #[cfg(target_pointer_width = "64")]
+    unsafe {
+        ret(syscall_readonly!(
+            __NR_clock_nanosleep,
+            id,
+            c_uint(TIMER_ABSTIME),
+            by_ref(req),
+            zero()
+        ))
+    }
+}
+
+#[cfg(target_pointer_width = "32")]
+unsafe fn clock_nanosleep_absolute_old(id: ClockId, req: &__kernel_timespec) -> io::Result<()> {
+    let old_req = __kernel_old_timespec {
+        tv_sec: req.tv_sec.try_into().map_err(|_| io::Errno::INVAL)?,
+        tv_nsec: req.tv_nsec.try_into().map_err(|_| io::Errno::INVAL)?,
+    };
+    ret(syscall_readonly!(
+        __NR_clock_nanosleep,
+        id,
+        c_int(0),
+        by_ref(&old_req),
+        zero()
+    ))
+}
+
+#[inline]
+pub(crate) fn nanosleep(req: &__kernel_timespec) -> NanosleepRelativeResult {
+    #[cfg(target_pointer_width = "32")]
+    unsafe {
+        let mut rem = MaybeUninit::<__kernel_timespec>::uninit();
+        match ret(syscall!(
+            __NR_clock_nanosleep_time64,
+            ClockId::Realtime,
+            c_int(0),
+            by_ref(req),
+            &mut rem
+        ))
+        .or_else(|err| {
+            // See the comments in `rustix_clock_gettime_via_syscall` about
+            // emulation.
+            if err == io::Errno::NOSYS {
+                nanosleep_old(req, &mut rem)
+            } else {
+                Err(err)
+            }
+        }) {
+            Ok(()) => NanosleepRelativeResult::Ok,
+            Err(io::Errno::INTR) => NanosleepRelativeResult::Interrupted(rem.assume_init()),
+            Err(err) => NanosleepRelativeResult::Err(err),
+        }
+    }
+    #[cfg(target_pointer_width = "64")]
+    unsafe {
+        let mut rem = MaybeUninit::<__kernel_timespec>::uninit();
+        match ret(syscall!(__NR_nanosleep, by_ref(req), &mut rem)) {
+            Ok(()) => NanosleepRelativeResult::Ok,
+            Err(io::Errno::INTR) => NanosleepRelativeResult::Interrupted(rem.assume_init()),
+            Err(err) => NanosleepRelativeResult::Err(err),
+        }
+    }
+}
+
+#[cfg(target_pointer_width = "32")]
+unsafe fn nanosleep_old(
+    req: &__kernel_timespec,
+    rem: &mut MaybeUninit<__kernel_timespec>,
+) -> io::Result<()> {
+    let old_req = __kernel_old_timespec {
+        tv_sec: req.tv_sec.try_into().map_err(|_| io::Errno::INVAL)?,
+        tv_nsec: req.tv_nsec.try_into().map_err(|_| io::Errno::INVAL)?,
+    };
+    let mut old_rem = MaybeUninit::<__kernel_old_timespec>::uninit();
+    ret(syscall!(__NR_nanosleep, by_ref(&old_req), &mut old_rem))?;
+    let old_rem = old_rem.assume_init();
+    // TODO: With Rust 1.55, we can use MaybeUninit::write here.
+    ptr::write(
+        rem.as_mut_ptr(),
+        __kernel_timespec {
+            tv_sec: old_rem.tv_sec.into(),
+            tv_nsec: old_rem.tv_nsec.into(),
+        },
+    );
+    Ok(())
+}
+
+#[inline]
+pub(crate) fn gettid() -> Pid {
+    unsafe {
+        let tid: i32 = ret_usize_infallible(syscall_readonly!(__NR_gettid)) as __kernel_pid_t;
+        debug_assert_ne!(tid, 0);
+        Pid::from_raw_nonzero(RawNonZeroPid::new_unchecked(tid as u32))
+    }
+}
+
+// TODO: This could be de-multiplexed.
+#[inline]
+pub(crate) unsafe fn futex(
+    uaddr: *mut u32,
+    op: FutexOperation,
+    flags: FutexFlags,
+    val: u32,
+    utime: *const Timespec,
+    uaddr2: *mut u32,
+    val3: u32,
+) -> io::Result<usize> {
+    #[cfg(target_pointer_width = "32")]
+    {
+        ret_usize(syscall!(
+            __NR_futex_time64,
+            uaddr,
+            (op, flags),
+            c_uint(val),
+            utime,
+            uaddr2,
+            c_uint(val3)
+        ))
+        .or_else(|err| {
+            // See the comments in `rustix_clock_gettime_via_syscall` about
+            // emulation.
+            if err == io::Errno::NOSYS {
+                futex_old(uaddr, op, flags, val, utime, uaddr2, val3)
+            } else {
+                Err(err)
+            }
+        })
+    }
+    #[cfg(target_pointer_width = "64")]
+    ret_usize(syscall!(
+        __NR_futex,
+        uaddr,
+        (op, flags),
+        c_uint(val),
+        utime,
+        uaddr2,
+        c_uint(val3)
+    ))
+}
+
+#[cfg(target_pointer_width = "32")]
+unsafe fn futex_old(
+    uaddr: *mut u32,
+    op: FutexOperation,
+    flags: FutexFlags,
+    val: u32,
+    utime: *const Timespec,
+    uaddr2: *mut u32,
+    val3: u32,
+) -> io::Result<usize> {
+    let old_utime = __kernel_old_timespec {
+        tv_sec: (*utime).tv_sec.try_into().map_err(|_| io::Errno::INVAL)?,
+        tv_nsec: (*utime).tv_nsec.try_into().map_err(|_| io::Errno::INVAL)?,
+    };
+    ret_usize(syscall!(
+        __NR_futex,
+        uaddr,
+        (op, flags),
+        c_uint(val),
+        by_ref(&old_utime),
+        uaddr2,
+        c_uint(val3)
+    ))
+}
diff --git a/vendor/rustix/src/imp/linux_raw/time/mod.rs b/vendor/rustix/src/imp/linux_raw/time/mod.rs
new file mode 100644
index 000000000..c42592c4f
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/time/mod.rs
@@ -0,0 +1,3 @@
+#[cfg(any(feature = "time", target_arch = "x86"))]
+pub(crate) mod syscalls;
+pub(crate) mod types;
diff --git a/vendor/rustix/src/imp/linux_raw/time/syscalls.rs b/vendor/rustix/src/imp/linux_raw/time/syscalls.rs
new file mode 100644
index 000000000..93651e499
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/time/syscalls.rs
@@ -0,0 +1,229 @@
+//! linux_raw syscalls supporting `rustix::time`.
+//!
+//! # Safety
+//!
+//! See the `rustix::imp` module documentation for details.
+#![allow(unsafe_code)]
+#![allow(clippy::undocumented_unsafe_blocks)]
+
+#[cfg(feature = "time")]
+use super::super::conv::{by_ref, ret_owned_fd};
+use super::super::conv::{ret, ret_infallible};
+use super::types::ClockId;
+#[cfg(feature = "time")]
+use crate::fd::BorrowedFd;
+use crate::io;
+#[cfg(feature = "time")]
+use crate::io::OwnedFd;
+#[cfg(feature = "time")]
+use crate::time::{Itimerspec, TimerfdClockId, TimerfdFlags, TimerfdTimerFlags};
+use core::mem::MaybeUninit;
+use linux_raw_sys::general::__kernel_timespec;
+#[cfg(feature = "time")]
+#[cfg(target_pointer_width = "32")]
+use {core::convert::TryInto, linux_raw_sys::general::itimerspec as __kernel_old_itimerspec};
+#[cfg(target_pointer_width = "32")]
+use {core::ptr, linux_raw_sys::general::timespec as __kernel_old_timespec};
+
+// `clock_gettime` has special optimizations via the vDSO.
+#[cfg(feature = "time")]
+pub(crate) use super::super::vdso_wrappers::{clock_gettime, clock_gettime_dynamic};
+
+#[inline]
+pub(crate) fn clock_getres(which_clock: ClockId) -> __kernel_timespec {
+    #[cfg(target_pointer_width = "32")]
+    unsafe {
+        let mut result = MaybeUninit::<__kernel_timespec>::uninit();
+        if let Err(err) = ret(syscall!(__NR_clock_getres_time64, which_clock, &mut result)) {
+            // See the comments in `rustix_clock_gettime_via_syscall` about
+            // emulation.
+            debug_assert_eq!(err, io::Errno::NOSYS);
+            clock_getres_old(which_clock, &mut result);
+        }
+        result.assume_init()
+    }
+    #[cfg(target_pointer_width = "64")]
+    unsafe {
+        let mut result = MaybeUninit::<__kernel_timespec>::uninit();
+        ret_infallible(syscall!(__NR_clock_getres, which_clock, &mut result));
+        result.assume_init()
+    }
+}
+
+#[cfg(target_pointer_width = "32")]
+unsafe fn clock_getres_old(which_clock: ClockId, result: &mut MaybeUninit<__kernel_timespec>) {
+    let mut old_result = MaybeUninit::<__kernel_old_timespec>::uninit();
+    ret_infallible(syscall!(__NR_clock_getres, which_clock, &mut old_result));
+    let old_result = old_result.assume_init();
+    // TODO: With Rust 1.55, we can use MaybeUninit::write here.
+    ptr::write(
+        result.as_mut_ptr(),
+        __kernel_timespec {
+            tv_sec: old_result.tv_sec.into(),
+            tv_nsec: old_result.tv_nsec.into(),
+        },
+    );
+}
+
+#[cfg(feature = "time")]
+#[inline]
+pub(crate) fn timerfd_create(clockid: TimerfdClockId, flags: TimerfdFlags) -> io::Result<OwnedFd> {
+    unsafe { ret_owned_fd(syscall!(__NR_timerfd_create, clockid, flags)) }
+}
+
+#[cfg(feature = "time")]
+#[inline]
+pub(crate) fn timerfd_settime(
+    fd: BorrowedFd<'_>,
+    flags: TimerfdTimerFlags,
+    new_value: &Itimerspec,
+) -> io::Result<Itimerspec> {
+    let mut result = MaybeUninit::<Itimerspec>::uninit();
+
+    #[cfg(target_pointer_width = "64")]
+    unsafe {
+        ret(syscall!(
+            __NR_timerfd_settime,
+            fd,
+            flags,
+            by_ref(new_value),
+            &mut result
+        ))
+        .map(|()| result.assume_init())
+    }
+
+    #[cfg(target_pointer_width = "32")]
+    unsafe {
+        ret(syscall!(
+            __NR_timerfd_settime64,
+            fd,
+            flags,
+            by_ref(new_value),
+            &mut result
+        ))
+        .or_else(|err| {
+            // See the comments in `rustix_clock_gettime_via_syscall` about
+            // emulation.
+            if err == io::Errno::NOSYS {
+                timerfd_settime_old(fd, flags, new_value, &mut result)
+            } else {
+                Err(err)
+            }
+        })
+        .map(|()| result.assume_init())
+    }
+}
+
+#[cfg(feature = "time")]
+#[cfg(target_pointer_width = "32")]
+unsafe fn timerfd_settime_old(
+    fd: BorrowedFd<'_>,
+    flags: TimerfdTimerFlags,
+    new_value: &Itimerspec,
+    result: &mut MaybeUninit<Itimerspec>,
+) -> io::Result<()> {
+    let mut old_result = MaybeUninit::<__kernel_old_itimerspec>::uninit();
+
+    // Convert `new_value` to the old `__kernel_old_itimerspec` format.
+    let old_new_value = __kernel_old_itimerspec {
+        it_interval: __kernel_old_timespec {
+            tv_sec: new_value
+                .it_interval
+                .tv_sec
+                .try_into()
+                .map_err(|_| io::Errno::OVERFLOW)?,
+            tv_nsec: new_value
+                .it_interval
+                .tv_nsec
+                .try_into()
+                .map_err(|_| io::Errno::INVAL)?,
+        },
+        it_value: __kernel_old_timespec {
+            tv_sec: new_value
+                .it_value
+                .tv_sec
+                .try_into()
+                .map_err(|_| io::Errno::OVERFLOW)?,
+            tv_nsec: new_value
+                .it_value
+                .tv_nsec
+                .try_into()
+                .map_err(|_| io::Errno::INVAL)?,
+        },
+    };
+    ret(syscall!(
+        __NR_timerfd_settime,
+        fd,
+        flags,
+        by_ref(&old_new_value),
+        &mut old_result
+    ))?;
+    let old_result = old_result.assume_init();
+    // TODO: With Rust 1.55, we can use MaybeUninit::write here.
+    ptr::write(
+        result.as_mut_ptr(),
+        Itimerspec {
+            it_interval: __kernel_timespec {
+                tv_sec: old_result.it_interval.tv_sec.into(),
+                tv_nsec: old_result.it_interval.tv_nsec.into(),
+            },
+            it_value: __kernel_timespec {
+                tv_sec: old_result.it_value.tv_sec.into(),
+                tv_nsec: old_result.it_value.tv_nsec.into(),
+            },
+        },
+    );
+    Ok(())
+}
+
+#[cfg(feature = "time")]
+#[inline]
+pub(crate) fn timerfd_gettime(fd: BorrowedFd<'_>) -> io::Result<Itimerspec> {
+    let mut result = MaybeUninit::<Itimerspec>::uninit();
+
+    #[cfg(target_pointer_width = "64")]
+    unsafe {
+        ret(syscall!(__NR_timerfd_gettime, fd, &mut result)).map(|()| result.assume_init())
+    }
+
+    #[cfg(target_pointer_width = "32")]
+    unsafe {
+        ret(syscall!(__NR_timerfd_gettime64, fd, &mut result))
+            .or_else(|err| {
+                // See the comments in `rustix_clock_gettime_via_syscall` about
+                // emulation.
+                if err == io::Errno::NOSYS {
+                    timerfd_gettime_old(fd, &mut result)
+                } else {
+                    Err(err)
+                }
+            })
+            .map(|()| result.assume_init())
+    }
+}
+
+#[cfg(feature = "time")]
+#[cfg(target_pointer_width = "32")]
+unsafe fn timerfd_gettime_old(
+    fd: BorrowedFd<'_>,
+    result: &mut MaybeUninit<Itimerspec>,
+) -> io::Result<()> {
+    let mut old_result = MaybeUninit::<__kernel_old_itimerspec>::uninit();
+    ret(syscall!(__NR_timerfd_gettime, fd, &mut old_result))?;
+    let old_result = old_result.assume_init();
+    // TODO: With Rust 1.55, we can use MaybeUninit::write here.
+    ptr::write(
+        result.as_mut_ptr(),
+        Itimerspec {
+            it_interval: __kernel_timespec {
+                tv_sec: old_result.it_interval.tv_sec.into(),
+                tv_nsec: old_result.it_interval.tv_nsec.into(),
+            },
+            it_value: __kernel_timespec {
+                tv_sec: old_result.it_value.tv_sec.into(),
+                tv_nsec: old_result.it_value.tv_nsec.into(),
+            },
+        },
+    );
+    Ok(())
+}
diff --git a/vendor/rustix/src/imp/linux_raw/time/types.rs b/vendor/rustix/src/imp/linux_raw/time/types.rs
new file mode 100644
index 000000000..5a0fcc6f5
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/time/types.rs
@@ -0,0 +1,154 @@
+use super::super::c;
+use crate::fd::BorrowedFd;
+use bitflags::bitflags;
+
+/// `struct timespec`
+pub type Timespec = linux_raw_sys::general::__kernel_timespec;
+
+/// A type for the `tv_sec` field of [`Timespec`].
+pub type Secs = linux_raw_sys::general::__kernel_time64_t;
+
+/// A type for the `tv_nsec` field of [`Timespec`].
+pub type Nsecs = i64;
+
+/// `struct itimerspec` for use with [`timerfd_gettime`] and
+/// [`timerfd_settime`].
+///
+/// [`timerfd_gettime`]: crate::time::timerfd_gettime
+/// [`timerfd_settime`]: crate::time::timerfd_settime
+pub type Itimerspec = linux_raw_sys::general::__kernel_itimerspec;
+
+/// `CLOCK_*` constants for use with [`clock_gettime`].
+///
+/// These constants are always supported at runtime, so `clock_gettime` never
+/// has to fail with `INVAL` due to an unsupported clock. See
+/// [`DynamicClockId`] for a greater set of clocks, with the caveat that not
+/// all of them are always supported.
+///
+/// [`clock_gettime`]: crate::time::clock_gettime
+#[derive(Debug, Copy, Clone, Eq, PartialEq, Hash)]
+#[repr(u32)]
+#[non_exhaustive]
+pub enum ClockId {
+    /// `CLOCK_REALTIME`
+    Realtime = linux_raw_sys::general::CLOCK_REALTIME,
+
+    /// `CLOCK_MONOTONIC`
+    Monotonic = linux_raw_sys::general::CLOCK_MONOTONIC,
+
+    /// `CLOCK_PROCESS_CPUTIME_ID`
+    ProcessCPUTime = linux_raw_sys::general::CLOCK_PROCESS_CPUTIME_ID,
+
+    /// `CLOCK_THREAD_CPUTIME_ID`
+    ThreadCPUTime = linux_raw_sys::general::CLOCK_THREAD_CPUTIME_ID,
+
+    /// `CLOCK_REALTIME_COARSE`
+    RealtimeCoarse = linux_raw_sys::general::CLOCK_REALTIME_COARSE,
+
+    /// `CLOCK_MONOTONIC_COARSE`
+    MonotonicCoarse = linux_raw_sys::general::CLOCK_MONOTONIC_COARSE,
+
+    /// `CLOCK_MONOTONIC_RAW`
+    MonotonicRaw = linux_raw_sys::general::CLOCK_MONOTONIC_RAW,
+}
+
+/// `CLOCK_*` constants for use with [`clock_gettime_dynamic`].
+///
+/// These constants may be unsupported at runtime, depending on the OS version,
+/// and `clock_gettime_dynamic` may fail with `INVAL`. See [`ClockId`] for
+/// clocks which are always supported at runtime.
+///
+/// [`clock_gettime_dynamic`]: crate::time::clock_gettime_dynamic
+#[derive(Debug, Copy, Clone)]
+#[non_exhaustive]
+pub enum DynamicClockId<'a> {
+    /// `ClockId` values that are always supported at runtime.
+    Known(ClockId),
+
+    /// Linux dynamic clocks.
+    Dynamic(BorrowedFd<'a>),
+
+    /// `CLOCK_REALTIME_ALARM`, available on Linux >= 3.0
+    RealtimeAlarm,
+
+    /// `CLOCK_TAI`, available on Linux >= 3.10
+    Tai,
+
+    /// `CLOCK_BOOTTIME`, available on Linux >= 2.6.39
+    Boottime,
+
+    /// `CLOCK_BOOTTIME_ALARM`, available on Linux >= 2.6.39
+    BoottimeAlarm,
+}
+
+bitflags! {
+    /// `TFD_*` flags for use with [`timerfd_create`].
+    ///
+    /// [`timerfd_create`]: crate::time::timerfd_create
+    pub struct TimerfdFlags: c::c_uint {
+        /// `TFD_NONBLOCK`
+        const NONBLOCK = linux_raw_sys::general::TFD_NONBLOCK;
+
+        /// `TFD_CLOEXEC`
+        const CLOEXEC = linux_raw_sys::general::TFD_CLOEXEC;
+    }
+}
+
+bitflags! {
+    /// `TFD_TIMER_*` flags for use with [`timerfd_settime`].
+    ///
+    /// [`timerfd_settime`]: crate::time::timerfd_settime
+    pub struct TimerfdTimerFlags: c::c_uint {
+        /// `TFD_TIMER_ABSTIME`
+        const ABSTIME = linux_raw_sys::general::TFD_TIMER_ABSTIME;
+
+        /// `TFD_TIMER_CANCEL_ON_SET`
+        const CANCEL_ON_SET = linux_raw_sys::general::TFD_TIMER_CANCEL_ON_SET;
+    }
+}
+
+/// `CLOCK_*` constants for use with [`timerfd_create`].
+///
+/// [`timerfd_create`]: crate::time::timerfd_create
+#[derive(Debug, Copy, Clone, Eq, PartialEq, Hash)]
+#[repr(u32)]
+#[non_exhaustive]
+pub enum TimerfdClockId {
+    /// `CLOCK_REALTIME`—A clock that tells the "real" time.
+    ///
+    /// This is a clock that tells the amount of time elapsed since the
+    /// Unix epoch, 1970-01-01T00:00:00Z. The clock is externally settable, so
+    /// it is not monotonic. Successive reads may see decreasing times, so it
+    /// isn't reliable for measuring durations.
+    Realtime = linux_raw_sys::general::CLOCK_REALTIME,
+
+    /// `CLOCK_MONOTONIC`—A clock that tells an abstract time.
+    ///
+    /// Unlike `Realtime`, this clock is not based on a fixed known epoch, so
+    /// individual times aren't meaningful. However, since it isn't settable,
+    /// it is reliable for measuring durations.
+    ///
+    /// This clock does not advance while the system is suspended; see
+    /// `Boottime` for a clock that does.
+    Monotonic = linux_raw_sys::general::CLOCK_MONOTONIC,
+
+    /// `CLOCK_BOOTTIME`—Like `Monotonic`, but advances while suspended.
+    ///
+    /// This clock is similar to `Monotonic`, but does advance while the system
+    /// is suspended.
+    Boottime = linux_raw_sys::general::CLOCK_BOOTTIME,
+
+    /// `CLOCK_REALTIME_ALARM`—Like `Realtime`, but wakes a suspended system.
+    ///
+    /// This clock is like `Realtime`, but can wake up a suspended system.
+    ///
+    /// Use of this clock requires the `CAP_WAKE_ALARM` Linux capability.
+    RealtimeAlarm = linux_raw_sys::general::CLOCK_REALTIME_ALARM,
+
+    /// `CLOCK_BOOTTIME_ALARM`—Like `Boottime`, but wakes a suspended system.
+    ///
+    /// This clock is like `Boottime`, but can wake up a suspended system.
+    ///
+    /// Use of this clock requires the `CAP_WAKE_ALARM` Linux capability.
+    BoottimeAlarm = linux_raw_sys::general::CLOCK_BOOTTIME_ALARM,
+}
diff --git a/vendor/rustix/src/imp/linux_raw/vdso.rs b/vendor/rustix/src/imp/linux_raw/vdso.rs
new file mode 100644
index 000000000..bda0a4773
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/vdso.rs
@@ -0,0 +1,435 @@
+//! Parse the Linux vDSO.
+//!
+//! The following code is transliterated from
+//! tools/testing/selftests/vDSO/parse_vdso.c in Linux 5.11, which is licensed
+//! with Creative Commons Zero License, version 1.0,
+//! available at <https://creativecommons.org/publicdomain/zero/1.0/legalcode>
+//!
+//! # Safety
+//!
+//! Parsing the vDSO involves a lot of raw pointer manipulation. This
+//! implementation follows Linux's reference implementation, and adds several
+//! additional safety checks.
+#![allow(unsafe_code)]
+
+use super::c;
+use super::elf::*;
+use super::mm::syscalls::madvise;
+use super::mm::types::Advice;
+use crate::ffi::CStr;
+use crate::io;
+use core::ffi::c_void;
+use core::mem::{align_of, size_of};
+use core::ptr::{null, null_mut};
+
+pub(super) struct Vdso {
+    // Load information
+    load_addr: *const Elf_Ehdr,
+    load_end: *const c_void, // the end of the `PT_LOAD` segment
+    pv_offset: usize,        // recorded paddr - recorded vaddr
+
+    // Symbol table
+    symtab: *const Elf_Sym,
+    symstrings: *const u8,
+    bucket: *const u32,
+    chain: *const u32,
+    nbucket: u32,
+    //nchain: u32,
+
+    // Version table
+    versym: *const u16,
+    verdef: *const Elf_Verdef,
+}
+
+// Straight from the ELF specification.
+fn elf_hash(name: &CStr) -> u32 {
+    let mut h: u32 = 0;
+    for b in name.to_bytes() {
+        h = (h << 4).wrapping_add(u32::from(*b));
+        let g = h & 0xf000_0000;
+        if g != 0 {
+            h ^= g >> 24;
+        }
+        h &= !g;
+    }
+    h
+}
+
+/// Cast `value` to a pointer type, doing some checks for validity.
+fn make_pointer<T>(value: *const c_void) -> Option<*const T> {
+    if value.is_null()
+        || (value as usize).checked_add(size_of::<T>()).is_none()
+        || (value as usize) % align_of::<T>() != 0
+    {
+        return None;
+    }
+
+    Some(value.cast())
+}
+
+/// Create a `Vdso` value by parsing the vDSO at the given address.
+///
+/// # Safety
+///
+/// `base` must be a valid pointer to an ELF image in memory.
+unsafe fn init_from_sysinfo_ehdr(base: *const Elf_Ehdr) -> Option<Vdso> {
+    // Check that `base` is a valid pointer to the kernel-provided vDSO.
+    let hdr = check_vdso_base(base)?;
+
+    let mut vdso = Vdso {
+        load_addr: base,
+        load_end: base.cast(),
+        pv_offset: 0,
+        symtab: null(),
+        symstrings: null(),
+        bucket: null(),
+        chain: null(),
+        nbucket: 0,
+        //nchain: 0,
+        versym: null(),
+        verdef: null(),
+    };
+
+    let pt = make_pointer::<Elf_Phdr>(vdso.base_plus(hdr.e_phoff)?)?;
+    let mut dyn_: *const Elf_Dyn = null();
+    let mut num_dyn = 0;
+
+    // We need two things from the segment table: the load offset
+    // and the dynamic table.
+    let mut found_vaddr = false;
+    for i in 0..hdr.e_phnum {
+        let phdr = &*pt.add(i as usize);
+        if phdr.p_flags & PF_W != 0 {
+            // Don't trust any vDSO that claims to be loading writable
+            // segments into memory.
+            return None;
+        }
+        if phdr.p_type == PT_LOAD && !found_vaddr {
+            // The segment should be readable and executable, because it
+            // contains the symbol table and the function bodies.
+            if phdr.p_flags & (PF_R | PF_X) != (PF_R | PF_X) {
+                return None;
+            }
+            found_vaddr = true;
+            vdso.load_end = vdso.base_plus(phdr.p_offset.checked_add(phdr.p_memsz)?)?;
+            vdso.pv_offset = phdr.p_offset.wrapping_sub(phdr.p_vaddr);
+        } else if phdr.p_type == PT_DYNAMIC {
+            // If `p_offset` is zero, it's more likely that we're looking at memory
+            // that has been zeroed than that the kernel has somehow aliased the
+            // `Ehdr` and the `Elf_Dyn` array.
+            if phdr.p_offset < size_of::<Elf_Ehdr>() {
+                return None;
+            }
+
+            dyn_ = make_pointer::<Elf_Dyn>(vdso.base_plus(phdr.p_offset)?)?;
+            num_dyn = phdr.p_memsz / size_of::<Elf_Dyn>();
+        } else if phdr.p_type == PT_INTERP || phdr.p_type == PT_GNU_RELRO {
+            // Don't trust any ELF image that has an "interpreter" or that uses
+            // RELRO, which is likely to be a user ELF image rather and not the
+            // kernel vDSO.
+            return None;
+        }
+    }
+
+    if !found_vaddr || dyn_.is_null() {
+        return None; // Failed
+    }
+
+    // Fish out the useful bits of the dynamic table.
+    let mut hash: *const u32 = null();
+    vdso.symstrings = null();
+    vdso.symtab = null();
+    vdso.versym = null();
+    vdso.verdef = null();
+    let mut i = 0;
+    loop {
+        if i == num_dyn {
+            return None;
+        }
+        let d = &*dyn_.add(i);
+        match d.d_tag {
+            DT_STRTAB => {
+                vdso.symstrings = make_pointer::<u8>(vdso.addr_from_elf(d.d_val)?)?;
+            }
+            DT_SYMTAB => {
+                vdso.symtab = make_pointer::<Elf_Sym>(vdso.addr_from_elf(d.d_val)?)?;
+            }
+            DT_HASH => {
+                hash = make_pointer::<u32>(vdso.addr_from_elf(d.d_val)?)?;
+            }
+            DT_VERSYM => {
+                vdso.versym = make_pointer::<u16>(vdso.addr_from_elf(d.d_val)?)?;
+            }
+            DT_VERDEF => {
+                vdso.verdef = make_pointer::<Elf_Verdef>(vdso.addr_from_elf(d.d_val)?)?;
+            }
+            DT_SYMENT => {
+                if d.d_val != size_of::<Elf_Sym>() {
+                    return None; // Failed
+                }
+            }
+            DT_NULL => break,
+            _ => {}
+        }
+        i = i.checked_add(1)?;
+    }
+    if vdso.symstrings.is_null() || vdso.symtab.is_null() || hash.is_null() {
+        return None; // Failed
+    }
+
+    if vdso.verdef.is_null() {
+        vdso.versym = null();
+    }
+
+    // Parse the hash table header.
+    vdso.nbucket = *hash.add(0);
+    //vdso.nchain = *hash.add(1);
+    vdso.bucket = hash.add(2);
+    vdso.chain = hash.add(vdso.nbucket as usize + 2);
+
+    // That's all we need.
+    Some(vdso)
+}
+
+/// Check that `base` is a valid pointer to the kernel-provided vDSO.
+///
+/// `base` is some value we got from a `AT_SYSINFO_EHDR` aux record somewhere,
+/// which hopefully holds the value of the kernel-provided vDSO in memory. Do a
+/// series of checks to be as sure as we can that it's safe to use.
+unsafe fn check_vdso_base<'vdso>(base: *const Elf_Ehdr) -> Option<&'vdso Elf_Ehdr> {
+    // In theory, we could check that we're not attempting to parse our own ELF
+    // image, as an additional check. However, older Linux toolchains don't
+    // support this, and Rust's `#[linkage = "extern_weak"]` isn't stable yet,
+    // so just disable this for now.
+    /*
+    {
+        extern "C" {
+            static __ehdr_start: c::c_void;
+        }
+
+        let ehdr_start: *const c::c_void = &__ehdr_start;
+        if base == ehdr_start {
+            return None;
+        }
+    }
+    */
+
+    let hdr = &*make_pointer::<Elf_Ehdr>(base.cast())?;
+
+    // Check that the vDSO is page-aligned and appropriately mapped. We call
+    // this after `make_pointer` so that we don't do a syscall if there's no
+    // chance the pointer is valid.
+    madvise(base as *mut c_void, size_of::<Elf_Ehdr>(), Advice::Normal).ok()?;
+
+    if hdr.e_ident[..SELFMAG] != ELFMAG {
+        return None; // Wrong ELF magic
+    }
+    if hdr.e_ident[EI_CLASS] != ELFCLASS {
+        return None; // Wrong ELF class
+    }
+    if hdr.e_ident[EI_DATA] != ELFDATA {
+        return None; // Wrong ELF data
+    }
+    if !matches!(hdr.e_ident[EI_OSABI], ELFOSABI_SYSV | ELFOSABI_LINUX) {
+        return None; // Unrecognized ELF OS ABI
+    }
+    if hdr.e_ident[EI_ABIVERSION] != ELFABIVERSION {
+        return None; // Unrecognized ELF ABI version
+    }
+    if hdr.e_type != ET_DYN {
+        return None; // Wrong ELF type
+    }
+    // Verify that the `e_machine` matches the architecture we're running as.
+    // This helps catch cases where we're running under qemu.
+    if hdr.e_machine != EM_CURRENT {
+        return None; // Wrong machine type
+    }
+
+    // If ELF is extended, we'll need to adjust.
+    if hdr.e_ident[EI_VERSION] != EV_CURRENT
+        || hdr.e_ehsize as usize != size_of::<Elf_Ehdr>()
+        || hdr.e_phentsize as usize != size_of::<Elf_Phdr>()
+    {
+        return None;
+    }
+    // We don't currently support extra-large numbers of segments.
+    if hdr.e_phnum == PN_XNUM {
+        return None;
+    }
+
+    // If `e_phoff` is zero, it's more likely that we're looking at memory that
+    // has been zeroed than that the kernel has somehow aliased the `Ehdr` and
+    // the `Phdr`.
+    if hdr.e_phoff < size_of::<Elf_Ehdr>() {
+        return None;
+    }
+
+    // Check that the vDSO is not writable, since that would indicate that this
+    // isn't the kernel vDSO. Here we're just using `clock_getres` just as an
+    // arbitrary system call which writes to a buffer and fails with `EFAULT`
+    // if the buffer is not writable.
+    {
+        use super::conv::ret;
+        use super::time::types::ClockId;
+        if ret(syscall!(__NR_clock_getres, ClockId::Monotonic, base)) != Err(io::Errno::FAULT) {
+            // We can't gracefully fail here because we would seem to have just
+            // mutated some unknown memory.
+            #[cfg(feature = "std")]
+            {
+                std::process::abort();
+            }
+            #[cfg(all(not(feature = "std"), feature = "rustc-dep-of-std"))]
+            {
+                core::intrinsics::abort();
+            }
+        }
+    }
+
+    Some(hdr)
+}
+
+impl Vdso {
+    /// Parse the vDSO.
+    ///
+    /// Returns None if the vDSO can't be located or if it doesn't conform
+    /// to our expectations.
+    #[inline]
+    pub(super) fn new() -> Option<Self> {
+        init_from_auxv()
+    }
+
+    /// Check the version for a symbol.
+    ///
+    /// # Safety
+    ///
+    /// The raw pointers inside `self` must be valid.
+    unsafe fn match_version(&self, mut ver: u16, name: &CStr, hash: u32) -> bool {
+        // This is a helper function to check if the version indexed by
+        // ver matches name (which hashes to hash).
+        //
+        // The version definition table is a mess, and I don't know how
+        // to do this in better than linear time without allocating memory
+        // to build an index. I also don't know why the table has
+        // variable size entries in the first place.
+        //
+        // For added fun, I can't find a comprehensible specification of how
+        // to parse all the weird flags in the table.
+        //
+        // So I just parse the whole table every time.
+
+        // First step: find the version definition
+        ver &= 0x7fff; // Apparently bit 15 means "hidden"
+        let mut def = self.verdef;
+        loop {
+            if (*def).vd_version != VER_DEF_CURRENT {
+                return false; // Failed
+            }
+
+            if ((*def).vd_flags & VER_FLG_BASE) == 0 && ((*def).vd_ndx & 0x7fff) == ver {
+                break;
+            }
+
+            if (*def).vd_next == 0 {
+                return false; // No definition.
+            }
+
+            def = def
+                .cast::<u8>()
+                .add((*def).vd_next as usize)
+                .cast::<Elf_Verdef>();
+        }
+
+        // Now figure out whether it matches.
+        let aux = &*(def.cast::<u8>())
+            .add((*def).vd_aux as usize)
+            .cast::<Elf_Verdaux>();
+        (*def).vd_hash == hash
+            && (name == CStr::from_ptr(self.symstrings.add(aux.vda_name as usize).cast()))
+    }
+
+    /// Look up a symbol in the vDSO.
+    pub(super) fn sym(&self, version: &CStr, name: &CStr) -> *mut c::c_void {
+        let ver_hash = elf_hash(version);
+        let name_hash = elf_hash(name);
+
+        // Safety: The pointers in `self` must be valid.
+        unsafe {
+            let mut chain = *self.bucket.add((name_hash % self.nbucket) as usize);
+
+            while chain != STN_UNDEF {
+                let sym = &*self.symtab.add(chain as usize);
+
+                // Check for a defined global or weak function w/ right name.
+                //
+                // The reference parser in Linux's parse_vdso.c requires
+                // symbols to have type `STT_FUNC`, but on powerpc64, the vDSO
+                // uses `STT_NOTYPE`, so allow that too.
+                if (ELF_ST_TYPE(sym.st_info) != STT_FUNC &&
+                        ELF_ST_TYPE(sym.st_info) != STT_NOTYPE)
+                    || (ELF_ST_BIND(sym.st_info) != STB_GLOBAL
+                        && ELF_ST_BIND(sym.st_info) != STB_WEAK)
+                    || sym.st_shndx == SHN_UNDEF
+                    || sym.st_shndx == SHN_ABS
+                    || ELF_ST_VISIBILITY(sym.st_other) != STV_DEFAULT
+                    || (name != CStr::from_ptr(self.symstrings.add(sym.st_name as usize).cast()))
+                    // Check symbol version.
+                    || (!self.versym.is_null()
+                        && !self.match_version(*self.versym.add(chain as usize), version, ver_hash))
+                {
+                    chain = *self.chain.add(chain as usize);
+                    continue;
+                }
+
+                let sum = self.addr_from_elf(sym.st_value).unwrap();
+                assert!(
+                    sum as usize >= self.load_addr as usize
+                        && sum as usize <= self.load_end as usize
+                );
+                return sum as *mut c::c_void;
+            }
+        }
+
+        null_mut()
+    }
+
+    /// Add the given address to the vDSO base address.
+    unsafe fn base_plus(&self, offset: usize) -> Option<*const c_void> {
+        // Check for overflow.
+        let _ = (self.load_addr as usize).checked_add(offset)?;
+        // Add the offset to the base.
+        Some(self.load_addr.cast::<u8>().add(offset).cast())
+    }
+
+    /// Translate an ELF-address-space address into a usable virtual address.
+    unsafe fn addr_from_elf(&self, elf_addr: usize) -> Option<*const c_void> {
+        self.base_plus(elf_addr.wrapping_add(self.pv_offset))
+    }
+}
+
+// Find the `AT_SYSINFO_EHDR` in auxv records in memory. We have our own code
+// for reading the auxv records in memory, so we don't currently use this.
+//
+// # Safety
+//
+// `elf_auxv` must point to a valid array of AUXV records terminated by an
+// `AT_NULL` record.
+/*
+unsafe fn init_from_auxv(elf_auxv: *const Elf_auxv_t) -> Option<Vdso> {
+    let mut i = 0;
+    while (*elf_auxv.add(i)).a_type != AT_NULL {
+        if (*elf_auxv.add(i)).a_type == AT_SYSINFO_EHDR {
+            return init_from_sysinfo_ehdr((*elf_auxv.add(i)).a_val);
+        }
+        i += 1;
+    }
+
+    None
+}
+*/
+
+/// Find the vDSO image by following the `AT_SYSINFO_EHDR` auxv record pointer.
+fn init_from_auxv() -> Option<Vdso> {
+    // Safety: `sysinfo_ehdr` does extensive checks to ensure that the value
+    // we get really is an `AT_SYSINFO_EHDR` value from the kernel.
+    unsafe { init_from_sysinfo_ehdr(super::param::auxv::sysinfo_ehdr()) }
+}
diff --git a/vendor/rustix/src/imp/linux_raw/vdso_wrappers.rs b/vendor/rustix/src/imp/linux_raw/vdso_wrappers.rs
new file mode 100644
index 000000000..80c8dbefd
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/vdso_wrappers.rs
@@ -0,0 +1,397 @@
+//! Implement syscalls using the vDSO.
+//!
+//! <https://man7.org/linux/man-pages/man7/vdso.7.html>
+//!
+//! # Safety
+//!
+//! Similar to syscalls.rs, this file performs raw system calls, and sometimes
+//! passes them uninitialized memory buffers. This file also calls vDSO
+//! functions.
+#![allow(unsafe_code)]
+
+use super::conv::{c_int, ret};
+#[cfg(target_arch = "x86")]
+use super::reg::{ArgReg, RetReg, SyscallNumber, A0, A1, A2, A3, A4, A5, R0};
+use super::time::types::{ClockId, DynamicClockId, Timespec};
+use super::{c, vdso};
+use crate::io;
+#[cfg(all(asm, target_arch = "x86"))]
+use core::arch::asm;
+use core::mem::{transmute, MaybeUninit};
+use core::ptr::null_mut;
+use core::sync::atomic::AtomicPtr;
+use core::sync::atomic::Ordering::Relaxed;
+#[cfg(target_pointer_width = "32")]
+use linux_raw_sys::general::timespec as __kernel_old_timespec;
+use linux_raw_sys::general::{__kernel_clockid_t, __kernel_timespec};
+
+#[inline]
+pub(crate) fn clock_gettime(which_clock: ClockId) -> __kernel_timespec {
+    // Safety: `CLOCK_GETTIME` contains either null or the address of a
+    // function with an ABI like libc `clock_gettime`, and calling it has
+    // the side effect of writing to the result buffer, and no others.
+    unsafe {
+        let mut result = MaybeUninit::<__kernel_timespec>::uninit();
+        let callee = match transmute(CLOCK_GETTIME.load(Relaxed)) {
+            Some(callee) => callee,
+            None => init_clock_gettime(),
+        };
+        let r0 = callee(which_clock as c::c_int, result.as_mut_ptr());
+        assert_eq!(r0, 0);
+        result.assume_init()
+    }
+}
+
+#[inline]
+pub(crate) fn clock_gettime_dynamic(which_clock: DynamicClockId<'_>) -> io::Result<Timespec> {
+    let id = match which_clock {
+        DynamicClockId::Known(id) => id as __kernel_clockid_t,
+
+        DynamicClockId::Dynamic(fd) => {
+            // See `FD_TO_CLOCKID` in Linux's `clock_gettime` documentation.
+            use crate::imp::fd::AsRawFd;
+            const CLOCKFD: i32 = 3;
+            ((!fd.as_raw_fd() << 3) | CLOCKFD) as __kernel_clockid_t
+        }
+
+        DynamicClockId::RealtimeAlarm => {
+            linux_raw_sys::general::CLOCK_REALTIME_ALARM as __kernel_clockid_t
+        }
+        DynamicClockId::Tai => linux_raw_sys::general::CLOCK_TAI as __kernel_clockid_t,
+        DynamicClockId::Boottime => linux_raw_sys::general::CLOCK_BOOTTIME as __kernel_clockid_t,
+        DynamicClockId::BoottimeAlarm => {
+            linux_raw_sys::general::CLOCK_BOOTTIME_ALARM as __kernel_clockid_t
+        }
+    };
+
+    // Safety: `CLOCK_GETTIME` contains either null or the address of a
+    // function with an ABI like libc `clock_gettime`, and calling it has
+    // the side effect of writing to the result buffer, and no others.
+    unsafe {
+        const EINVAL: c::c_int = -(c::EINVAL as c::c_int);
+        let mut timespec = MaybeUninit::<Timespec>::uninit();
+        let callee = match transmute(CLOCK_GETTIME.load(Relaxed)) {
+            Some(callee) => callee,
+            None => init_clock_gettime(),
+        };
+        match callee(id, timespec.as_mut_ptr()) {
+            0 => (),
+            EINVAL => return Err(io::Errno::INVAL),
+            _ => _rustix_clock_gettime_via_syscall(id, timespec.as_mut_ptr())?,
+        }
+        Ok(timespec.assume_init())
+    }
+}
+
+#[cfg(target_arch = "x86")]
+pub(super) mod x86_via_vdso {
+    use super::{transmute, ArgReg, Relaxed, RetReg, SyscallNumber, A0, A1, A2, A3, A4, A5, R0};
+    use crate::imp::arch::asm;
+
+    #[inline]
+    pub(in crate::imp) unsafe fn syscall0(nr: SyscallNumber<'_>) -> RetReg<R0> {
+        let callee = match transmute(super::SYSCALL.load(Relaxed)) {
+            Some(callee) => callee,
+            None => super::init_syscall(),
+        };
+        asm::indirect_syscall0(callee, nr)
+    }
+
+    #[inline]
+    pub(in crate::imp) unsafe fn syscall1<'a>(
+        nr: SyscallNumber<'a>,
+        a0: ArgReg<'a, A0>,
+    ) -> RetReg<R0> {
+        let callee = match transmute(super::SYSCALL.load(Relaxed)) {
+            Some(callee) => callee,
+            None => super::init_syscall(),
+        };
+        asm::indirect_syscall1(callee, nr, a0)
+    }
+
+    #[inline]
+    pub(in crate::imp) unsafe fn syscall1_noreturn<'a>(
+        nr: SyscallNumber<'a>,
+        a0: ArgReg<'a, A0>,
+    ) -> ! {
+        let callee = match transmute(super::SYSCALL.load(Relaxed)) {
+            Some(callee) => callee,
+            None => super::init_syscall(),
+        };
+        asm::indirect_syscall1_noreturn(callee, nr, a0)
+    }
+
+    #[inline]
+    pub(in crate::imp) unsafe fn syscall2<'a>(
+        nr: SyscallNumber<'a>,
+        a0: ArgReg<'a, A0>,
+        a1: ArgReg<'a, A1>,
+    ) -> RetReg<R0> {
+        let callee = match transmute(super::SYSCALL.load(Relaxed)) {
+            Some(callee) => callee,
+            None => super::init_syscall(),
+        };
+        asm::indirect_syscall2(callee, nr, a0, a1)
+    }
+
+    #[inline]
+    pub(in crate::imp) unsafe fn syscall3<'a>(
+        nr: SyscallNumber<'a>,
+        a0: ArgReg<'a, A0>,
+        a1: ArgReg<'a, A1>,
+        a2: ArgReg<'a, A2>,
+    ) -> RetReg<R0> {
+        let callee = match transmute(super::SYSCALL.load(Relaxed)) {
+            Some(callee) => callee,
+            None => super::init_syscall(),
+        };
+        asm::indirect_syscall3(callee, nr, a0, a1, a2)
+    }
+
+    #[inline]
+    pub(in crate::imp) unsafe fn syscall4<'a>(
+        nr: SyscallNumber<'a>,
+        a0: ArgReg<'a, A0>,
+        a1: ArgReg<'a, A1>,
+        a2: ArgReg<'a, A2>,
+        a3: ArgReg<'a, A3>,
+    ) -> RetReg<R0> {
+        let callee = match transmute(super::SYSCALL.load(Relaxed)) {
+            Some(callee) => callee,
+            None => super::init_syscall(),
+        };
+        asm::indirect_syscall4(callee, nr, a0, a1, a2, a3)
+    }
+
+    #[inline]
+    pub(in crate::imp) unsafe fn syscall5<'a>(
+        nr: SyscallNumber<'a>,
+        a0: ArgReg<'a, A0>,
+        a1: ArgReg<'a, A1>,
+        a2: ArgReg<'a, A2>,
+        a3: ArgReg<'a, A3>,
+        a4: ArgReg<'a, A4>,
+    ) -> RetReg<R0> {
+        let callee = match transmute(super::SYSCALL.load(Relaxed)) {
+            Some(callee) => callee,
+            None => super::init_syscall(),
+        };
+        asm::indirect_syscall5(callee, nr, a0, a1, a2, a3, a4)
+    }
+
+    #[inline]
+    pub(in crate::imp) unsafe fn syscall6<'a>(
+        nr: SyscallNumber<'a>,
+        a0: ArgReg<'a, A0>,
+        a1: ArgReg<'a, A1>,
+        a2: ArgReg<'a, A2>,
+        a3: ArgReg<'a, A3>,
+        a4: ArgReg<'a, A4>,
+        a5: ArgReg<'a, A5>,
+    ) -> RetReg<R0> {
+        let callee = match transmute(super::SYSCALL.load(Relaxed)) {
+            Some(callee) => callee,
+            None => super::init_syscall(),
+        };
+        asm::indirect_syscall6(callee, nr, a0, a1, a2, a3, a4, a5)
+    }
+
+    // With the indirect call, it isn't meaningful to do a separate
+    // `_readonly` optimization.
+    pub(in crate::imp) use {
+        syscall0 as syscall0_readonly, syscall1 as syscall1_readonly,
+        syscall2 as syscall2_readonly, syscall3 as syscall3_readonly,
+        syscall4 as syscall4_readonly, syscall5 as syscall5_readonly,
+        syscall6 as syscall6_readonly,
+    };
+}
+
+type ClockGettimeType = unsafe extern "C" fn(c::c_int, *mut Timespec) -> c::c_int;
+
+/// The underlying syscall functions are only called from asm, using the
+/// special syscall calling convention to pass arguments and return values,
+/// which the signature here doesn't reflect.
+#[cfg(target_arch = "x86")]
+pub(super) type SyscallType = unsafe extern "C" fn();
+
+fn init_clock_gettime() -> ClockGettimeType {
+    init();
+    // Safety: Load the function address from static storage that we
+    // just initialized.
+    unsafe { transmute(CLOCK_GETTIME.load(Relaxed)) }
+}
+
+#[cfg(target_arch = "x86")]
+fn init_syscall() -> SyscallType {
+    init();
+    // Safety: Load the function address from static storage that we
+    // just initialized.
+    unsafe { transmute(SYSCALL.load(Relaxed)) }
+}
+
+/// `AtomicPtr` can't hold a `fn` pointer, so we use a `*` pointer to this
+/// placeholder type, and cast it as needed.
+struct Function;
+static mut CLOCK_GETTIME: AtomicPtr<Function> = AtomicPtr::new(null_mut());
+#[cfg(target_arch = "x86")]
+static mut SYSCALL: AtomicPtr<Function> = AtomicPtr::new(null_mut());
+
+unsafe extern "C" fn rustix_clock_gettime_via_syscall(
+    clockid: c::c_int,
+    res: *mut Timespec,
+) -> c::c_int {
+    match _rustix_clock_gettime_via_syscall(clockid, res) {
+        Ok(()) => 0,
+        Err(e) => e.raw_os_error().wrapping_neg(),
+    }
+}
+
+#[cfg(target_pointer_width = "32")]
+unsafe fn _rustix_clock_gettime_via_syscall(
+    clockid: c::c_int,
+    res: *mut Timespec,
+) -> io::Result<()> {
+    let r0 = syscall!(__NR_clock_gettime64, c_int(clockid), res);
+    match ret(r0) {
+        Err(io::Errno::NOSYS) => _rustix_clock_gettime_via_syscall_old(clockid, res),
+        otherwise => otherwise,
+    }
+}
+
+#[cfg(target_pointer_width = "32")]
+unsafe fn _rustix_clock_gettime_via_syscall_old(
+    clockid: c::c_int,
+    res: *mut Timespec,
+) -> io::Result<()> {
+    // Ordinarily `rustix` doesn't like to emulate system calls, but in
+    // the case of time APIs, it's specific to Linux, specific to
+    // 32-bit architectures *and* specific to old kernel versions, and
+    // it's not that hard to fix up here, so that no other code needs
+    // to worry about this.
+    let mut old_result = MaybeUninit::<__kernel_old_timespec>::uninit();
+    let r0 = syscall!(__NR_clock_gettime, c_int(clockid), &mut old_result);
+    match ret(r0) {
+        Ok(()) => {
+            let old_result = old_result.assume_init();
+            *res = Timespec {
+                tv_sec: old_result.tv_sec.into(),
+                tv_nsec: old_result.tv_nsec.into(),
+            };
+            Ok(())
+        }
+        otherwise => otherwise,
+    }
+}
+
+#[cfg(target_pointer_width = "64")]
+unsafe fn _rustix_clock_gettime_via_syscall(
+    clockid: c::c_int,
+    res: *mut Timespec,
+) -> io::Result<()> {
+    ret(syscall!(__NR_clock_gettime, c_int(clockid), res))
+}
+
+/// A symbol pointing to an `int 0x80` instruction. This "function" is only
+/// called from assembly, and only with the x86 syscall calling convention,
+/// so its signature here is not its true signature.
+#[cfg(all(asm, target_arch = "x86"))]
+#[naked]
+unsafe extern "C" fn rustix_int_0x80() {
+    asm!("int $$0x80", "ret", options(noreturn))
+}
+
+// The outline version of the `rustix_int_0x80` above.
+#[cfg(all(not(asm), target_arch = "x86"))]
+extern "C" {
+    fn rustix_int_0x80();
+}
+
+fn minimal_init() {
+    // Safety: Store default function addresses in static storage so that if we
+    // end up making any system calls while we read the vDSO, they'll work.
+    // If the memory happens to already be initialized, this is redundant, but
+    // not harmful.
+    unsafe {
+        CLOCK_GETTIME
+            .compare_exchange(
+                null_mut(),
+                rustix_clock_gettime_via_syscall as *mut Function,
+                Relaxed,
+                Relaxed,
+            )
+            .ok();
+        #[cfg(target_arch = "x86")]
+        {
+            SYSCALL
+                .compare_exchange(
+                    null_mut(),
+                    rustix_int_0x80 as *mut Function,
+                    Relaxed,
+                    Relaxed,
+                )
+                .ok();
+        }
+    }
+}
+
+fn init() {
+    minimal_init();
+
+    if let Some(vdso) = vdso::Vdso::new() {
+        // Look up the platform-specific `clock_gettime` symbol as documented
+        // [here], except on 32-bit platforms where we look up the
+        // `64`-suffixed variant and fail if we don't find it.
+        //
+        // [here]: https://man7.org/linux/man-pages/man7/vdso.7.html
+        #[cfg(target_arch = "x86_64")]
+        let ptr = vdso.sym(cstr!("LINUX_2.6"), cstr!("__vdso_clock_gettime"));
+        #[cfg(target_arch = "arm")]
+        let ptr = vdso.sym(cstr!("LINUX_2.6"), cstr!("__vdso_clock_gettime64"));
+        #[cfg(target_arch = "aarch64")]
+        let ptr = vdso.sym(cstr!("LINUX_2.6.39"), cstr!("__kernel_clock_gettime"));
+        #[cfg(target_arch = "x86")]
+        let ptr = vdso.sym(cstr!("LINUX_2.6"), cstr!("__vdso_clock_gettime64"));
+        #[cfg(target_arch = "riscv64")]
+        let ptr = vdso.sym(cstr!("LINUX_4.15"), cstr!("__vdso_clock_gettime"));
+        #[cfg(target_arch = "powerpc64")]
+        let ptr = vdso.sym(cstr!("LINUX_2.6.15"), cstr!("__kernel_clock_gettime"));
+        #[cfg(target_arch = "mips")]
+        let ptr = vdso.sym(cstr!("LINUX_2.6"), cstr!("__vdso_clock_gettime64"));
+        #[cfg(target_arch = "mips64")]
+        let ptr = vdso.sym(cstr!("LINUX_2.6"), cstr!("__vdso_clock_gettime"));
+
+        // On all 64-bit platforms, the 64-bit `clock_gettime` symbols are
+        // always available.
+        #[cfg(any(target_pointer_width = "64"))]
+        let ok = true;
+
+        // On some 32-bit platforms, the 64-bit `clock_gettime` symbols are not
+        // available on older kernel versions.
+        #[cfg(any(target_arch = "arm", target_arch = "mips", target_arch = "x86"))]
+        let ok = !ptr.is_null();
+
+        if ok {
+            assert!(!ptr.is_null());
+
+            // Safety: Store the computed function addresses in static storage
+            // so that we don't need to compute it again (but if we do, it doesn't
+            // hurt anything).
+            unsafe {
+                CLOCK_GETTIME.store(ptr.cast(), Relaxed);
+            }
+        }
+
+        // On x86, also look up the vsyscall entry point.
+        #[cfg(target_arch = "x86")]
+        {
+            let ptr = vdso.sym(cstr!("LINUX_2.5"), cstr!("__kernel_vsyscall"));
+            assert!(!ptr.is_null());
+
+            // Safety: As above, store the computed function addresses in
+            // static storage.
+            unsafe {
+                SYSCALL.store(ptr.cast(), Relaxed);
+            }
+        }
+    }
+}