summaryrefslogtreecommitdiffstats
path: root/vendor/rustix/src/backend/libc/fs/syscalls.rs
diff options
context:
space:
mode:
Diffstat (limited to 'vendor/rustix/src/backend/libc/fs/syscalls.rs')
-rw-r--r--vendor/rustix/src/backend/libc/fs/syscalls.rs111
1 files changed, 37 insertions, 74 deletions
diff --git a/vendor/rustix/src/backend/libc/fs/syscalls.rs b/vendor/rustix/src/backend/libc/fs/syscalls.rs
index 698bf34ad..5df25daa9 100644
--- a/vendor/rustix/src/backend/libc/fs/syscalls.rs
+++ b/vendor/rustix/src/backend/libc/fs/syscalls.rs
@@ -1,9 +1,9 @@
//! libc syscalls supporting `rustix::fs`.
use crate::backend::c;
-use crate::backend::conv::{
- borrowed_fd, c_str, ret, ret_c_int, ret_off_t, ret_owned_fd, ret_usize,
-};
+#[cfg(any(apple, linux_kernel, feature = "alloc"))]
+use crate::backend::conv::ret_usize;
+use crate::backend::conv::{borrowed_fd, c_str, ret, ret_c_int, ret_off_t, ret_owned_fd};
use crate::fd::{BorrowedFd, OwnedFd};
use crate::ffi::CStr;
#[cfg(apple)]
@@ -90,6 +90,7 @@ fn open_via_syscall(path: &CStr, oflags: OFlags, mode: Mode) -> io::Result<Owned
target_arch = "aarch64",
target_arch = "riscv32",
target_arch = "riscv64",
+ target_arch = "csky",
target_arch = "loongarch64"
))]
{
@@ -101,6 +102,7 @@ fn open_via_syscall(path: &CStr, oflags: OFlags, mode: Mode) -> io::Result<Owned
target_arch = "aarch64",
target_arch = "riscv32",
target_arch = "riscv64",
+ target_arch = "csky",
target_arch = "loongarch64"
)))]
unsafe {
@@ -128,8 +130,8 @@ pub(crate) fn open(path: &CStr, oflags: OFlags, mode: Mode) -> io::Result<OwnedF
return open_via_syscall(path, oflags, mode);
}
- // On these platforms, `mode_t` is `u16` and can't be passed directly to
- // a variadic function.
+ // On these platforms, `mode_t` is `u16` and can't be passed directly to a
+ // variadic function.
#[cfg(any(
apple,
freebsdlike,
@@ -191,8 +193,8 @@ pub(crate) fn openat(
return openat_via_syscall(dirfd, path, oflags, mode);
}
- // On these platforms, `mode_t` is `u16` and can't be passed directly to
- // a variadic function.
+ // On these platforms, `mode_t` is `u16` and can't be passed directly to a
+ // variadic function.
#[cfg(any(
apple,
freebsdlike,
@@ -246,6 +248,7 @@ pub(crate) fn statvfs(filename: &CStr) -> io::Result<StatVfs> {
}
}
+#[cfg(feature = "alloc")]
#[inline]
pub(crate) fn readlink(path: &CStr, buf: &mut [u8]) -> io::Result<usize> {
unsafe {
@@ -255,7 +258,7 @@ pub(crate) fn readlink(path: &CStr, buf: &mut [u8]) -> io::Result<usize> {
}
}
-#[cfg(not(target_os = "redox"))]
+#[cfg(all(feature = "alloc", not(target_os = "redox")))]
#[inline]
pub(crate) fn readlinkat(
dirfd: BorrowedFd<'_>,
@@ -615,7 +618,7 @@ pub(crate) fn lstat(path: &CStr) -> io::Result<Stat> {
}
}
-#[cfg(not(any(target_os = "espidf", target_os = "redox")))]
+#[cfg(not(any(target_os = "aix", target_os = "espidf", target_os = "redox")))]
pub(crate) fn statat(dirfd: BorrowedFd<'_>, path: &CStr, flags: AtFlags) -> io::Result<Stat> {
// See the comments in `fstat` about using `crate::fs::statx` here.
#[cfg(all(
@@ -785,9 +788,6 @@ pub(crate) fn utimensat(
unsafe {
use crate::utils::as_ptr;
- // 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),
@@ -823,9 +823,6 @@ pub(crate) fn utimensat(
// 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),
@@ -1094,9 +1091,6 @@ pub(crate) fn copy_file_range(
) via SYS_copy_file_range -> c::ssize_t
}
- #[cfg(test)]
- assert_eq_size!(c::loff_t, 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.
@@ -1234,9 +1228,9 @@ pub(crate) fn seek(fd: BorrowedFd<'_>, pos: SeekFrom) -> io::Result<u64> {
}
SeekFrom::End(offset) => (c::SEEK_END, offset),
SeekFrom::Current(offset) => (c::SEEK_CUR, offset),
- #[cfg(any(freebsdlike, target_os = "linux", target_os = "solaris"))]
+ #[cfg(any(apple, freebsdlike, linux_kernel, solarish))]
SeekFrom::Data(offset) => (c::SEEK_DATA, offset),
- #[cfg(any(freebsdlike, target_os = "linux", target_os = "solaris"))]
+ #[cfg(any(apple, freebsdlike, linux_kernel, solarish))]
SeekFrom::Hole(offset) => (c::SEEK_HOLE, offset),
};
@@ -1273,6 +1267,14 @@ pub(crate) fn fchmod(fd: BorrowedFd<'_>, mode: Mode) -> io::Result<()> {
unsafe { ret(fchmod(borrowed_fd(fd), mode.bits() as c::mode_t)) }
}
+#[cfg(not(target_os = "wasi"))]
+pub(crate) fn chown(path: &CStr, owner: Option<Uid>, group: Option<Gid>) -> io::Result<()> {
+ unsafe {
+ let (ow, gr) = crate::ugid::translate_fchown_args(owner, group);
+ ret(c::chown(c_str(path), ow, gr))
+ }
+}
+
#[cfg(linux_kernel)]
pub(crate) fn fchown(fd: BorrowedFd<'_>, owner: Option<Uid>, group: Option<Gid>) -> io::Result<()> {
// Use `c::syscall` rather than `c::fchown` because some libc
@@ -1420,7 +1422,10 @@ fn libc_statvfs_to_statvfs(from: c::statvfs) -> StatVfs {
f_files: from.f_files as u64,
f_ffree: from.f_ffree as u64,
f_favail: from.f_ffree as u64,
+ #[cfg(not(target_os = "aix"))]
f_fsid: from.f_fsid as u64,
+ #[cfg(target_os = "aix")]
+ f_fsid: ((from.f_fsid.val[0] as u64) << 32) | from.f_fsid.val[1],
f_flag: StatVfsMountFlags::from_bits_retain(from.f_flag as u64),
f_namemax: from.f_namemax as u64,
}
@@ -1453,9 +1458,6 @@ pub(crate) fn futimens(fd: BorrowedFd<'_>, times: &Timestamps) -> io::Result<()>
unsafe {
use crate::utils::as_ptr;
- // 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()))
}
@@ -1480,9 +1482,6 @@ pub(crate) fn futimens(fd: BorrowedFd<'_>, times: &Timestamps) -> io::Result<()>
// 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()));
}
@@ -2049,12 +2048,12 @@ pub(crate) fn fcntl_fullfsync(fd: BorrowedFd<'_>) -> io::Result<()> {
}
#[cfg(apple)]
-pub(crate) fn fcntl_nocache(fd: BorrowedFd, value: bool) -> io::Result<()> {
+pub(crate) fn fcntl_nocache(fd: BorrowedFd<'_>, value: bool) -> io::Result<()> {
unsafe { ret(c::fcntl(borrowed_fd(fd), c::F_NOCACHE, value as c::c_int)) }
}
#[cfg(apple)]
-pub(crate) fn fcntl_global_nocache(fd: BorrowedFd, value: bool) -> io::Result<()> {
+pub(crate) fn fcntl_global_nocache(fd: BorrowedFd<'_>, value: bool) -> io::Result<()> {
unsafe {
ret(c::fcntl(
borrowed_fd(fd),
@@ -2420,51 +2419,15 @@ pub(crate) fn fremovexattr(fd: BorrowedFd<'_>, name: &CStr) -> io::Result<()> {
}
}
-#[cfg(linux_kernel)]
-#[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(linux_kernel)]
-#[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)
- }
-}
-
-// Sparc lacks `FICLONE`.
-#[cfg(all(linux_kernel, not(any(target_arch = "sparc", target_arch = "sparc64"))))]
-pub(crate) fn ioctl_ficlone(fd: BorrowedFd<'_>, src_fd: BorrowedFd<'_>) -> io::Result<()> {
- unsafe {
- ret(c::ioctl(
- borrowed_fd(fd),
- c::FICLONE as _,
- borrowed_fd(src_fd),
- ))
- }
-}
-
-#[cfg(linux_kernel)]
-#[inline]
-pub(crate) fn ext4_ioc_resize_fs(fd: BorrowedFd<'_>, blocks: u64) -> io::Result<()> {
- // TODO: Fix linux-raw-sys to define ioctl codes for sparc.
- #[cfg(any(target_arch = "sparc", target_arch = "sparc64"))]
- const EXT4_IOC_RESIZE_FS: u32 = 0x8008_6610;
-
- #[cfg(not(any(target_arch = "sparc", target_arch = "sparc64")))]
- use linux_raw_sys::ioctl::EXT4_IOC_RESIZE_FS;
+#[test]
+fn test_sizes() {
+ #[cfg(linux_kernel)]
+ assert_eq_size!(c::loff_t, u64);
- unsafe { ret(c::ioctl(borrowed_fd(fd), EXT4_IOC_RESIZE_FS as _, &blocks)) }
+ // Assert that `Timestamps` has the expected layout. If we're not fixing
+ // y2038, libc's type should match ours. If we are, it's smaller.
+ #[cfg(not(fix_y2038))]
+ assert_eq_size!([c::timespec; 2], Timestamps);
+ #[cfg(fix_y2038)]
+ assert!(core::mem::size_of::<[c::timespec; 2]>() < core::mem::size_of::<Timestamps>());
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-24 18:29:26 +0000