Merging upstream version 1.74.1+dfsg1.

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

1 files changed, 153 insertions, 0 deletions

diff --git a/vendor/rustix-0.37.6/src/backend/libc/io/types.rs b/vendor/rustix-0.37.6/src/backend/libc/io/types.rs
new file mode 100644
index 000000000..cbdd734b9
--- /dev/null
+++ b/vendor/rustix-0.37.6/src/backend/libc/io/types.rs
@@ -0,0 +1,153 @@
+use super::super::c;
+use bitflags::bitflags;
+#[cfg(any(target_os = "android", target_os = "linux"))]
+use core::marker::PhantomData;
+
+bitflags! {
+    /// `FD_*` constants for use with [`fcntl_getfd`] and [`fcntl_setfd`].
+    ///
+    /// [`fcntl_getfd`]: crate::io::fcntl_getfd
+    /// [`fcntl_setfd`]: crate::io::fcntl_setfd
+    pub struct FdFlags: c::c_int {
+        /// `FD_CLOEXEC`
+        const CLOEXEC = c::FD_CLOEXEC;
+    }
+}
+
+#[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)
+        const DSYNC = linux_raw_sys::general::RWF_DSYNC as c::c_int;
+        /// `RWF_HIPRI` (since Linux 4.6)
+        const HIPRI = linux_raw_sys::general::RWF_HIPRI as c::c_int;
+        /// `RWF_SYNC` (since Linux 4.7)
+        const SYNC = linux_raw_sys::general::RWF_SYNC as c::c_int;
+        /// `RWF_NOWAIT` (since Linux 4.14)
+        const NOWAIT = linux_raw_sys::general::RWF_NOWAIT as c::c_int;
+        /// `RWF_APPEND` (since Linux 4.16)
+        const APPEND = linux_raw_sys::general::RWF_APPEND as c::c_int;
+    }
+}
+
+#[cfg(any(target_os = "android", target_os = "linux"))]
+bitflags! {
+    /// `SPLICE_F_*` constants for use with [`splice`] and [`vmsplice`].
+    pub struct SpliceFlags: c::c_uint {
+        /// `SPLICE_F_MOVE`
+        const MOVE = c::SPLICE_F_MOVE;
+        /// `SPLICE_F_NONBLOCK`
+        const NONBLOCK = c::SPLICE_F_NONBLOCK;
+        /// `SPLICE_F_MORE`
+        const MORE = c::SPLICE_F_MORE;
+        /// `SPLICE_F_GIFT`
+        const GIFT = c::SPLICE_F_GIFT;
+    }
+}
+
+#[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(
+            apple,
+            target_os = "aix",
+            target_os = "android",
+            target_os = "redox",
+        )))] // Android 5.0 has dup3, but libc doesn't have bindings
+        const CLOEXEC = c::O_CLOEXEC;
+    }
+}
+
+#[cfg(not(any(apple, 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(
+            solarish,
+            target_os = "haiku",
+            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(solarish, target_os = "haiku", 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;
+
+/// A buffer type used with `vmsplice`.
+/// It is guaranteed to be ABI compatible with the iovec type on Unix platforms
+/// and `WSABUF` on Windows. Unlike `IoSlice` and `IoSliceMut` it is
+/// semantically like a raw pointer, and therefore can be shared or mutated as
+/// needed.
+#[cfg(any(target_os = "android", target_os = "linux"))]
+#[repr(transparent)]
+pub struct IoSliceRaw<'a> {
+    _buf: c::iovec,
+    _lifetime: PhantomData<&'a ()>,
+}
+
+#[cfg(any(target_os = "android", target_os = "linux"))]
+impl<'a> IoSliceRaw<'a> {
+    /// Creates a new IoSlice wrapping a byte slice.
+    pub fn from_slice(buf: &'a [u8]) -> Self {
+        IoSliceRaw {
+            _buf: c::iovec {
+                iov_base: buf.as_ptr() as *mut u8 as *mut c::c_void,
+                iov_len: buf.len() as _,
+            },
+            _lifetime: PhantomData,
+        }
+    }
+
+    /// Creates a new IoSlice wrapping a mutable byte slice.
+    pub fn from_slice_mut(buf: &'a mut [u8]) -> Self {
+        IoSliceRaw {
+            _buf: c::iovec {
+                iov_base: buf.as_mut_ptr() as *mut c::c_void,
+                iov_len: buf.len() as _,
+            },
+            _lifetime: PhantomData,
+        }
+    }
+}