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authorValentin Popov <valentin@popov.link>2024-07-19 15:37:58 +0300
committerValentin Popov <valentin@popov.link>2024-07-19 15:37:58 +0300
commita990de90fe41456a23e58bd087d2f107d321f3a1 (patch)
tree15afc392522a9e85dc3332235e311b7d39352ea9 /vendor/rustix/src/fs/statx.rs
parent3d48cd3f81164bbfc1a755dc1d4a9a02f98c8ddd (diff)
downloadfparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.tar.xz
fparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.zip
Deleted vendor folder
Diffstat (limited to 'vendor/rustix/src/fs/statx.rs')
-rw-r--r--vendor/rustix/src/fs/statx.rs135
1 files changed, 0 insertions, 135 deletions
diff --git a/vendor/rustix/src/fs/statx.rs b/vendor/rustix/src/fs/statx.rs
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index b7d6787..0000000
--- a/vendor/rustix/src/fs/statx.rs
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@@ -1,135 +0,0 @@
-//! Linux `statx`.
-
-use crate::fd::AsFd;
-use crate::fs::AtFlags;
-use crate::{backend, io, path};
-use backend::fs::types::{Statx, StatxFlags};
-
-#[cfg(feature = "linux_4_11")]
-use backend::fs::syscalls::statx as _statx;
-#[cfg(not(feature = "linux_4_11"))]
-use compat::statx as _statx;
-
-/// `statx(dirfd, path, flags, mask, statxbuf)`
-///
-/// This function returns [`io::Errno::NOSYS`] if `statx` is not available on
-/// the platform, such as Linux before 4.11. This also includes older Docker
-/// versions where the actual syscall fails with different error codes; rustix
-/// handles this and translates them into `NOSYS`.
-///
-/// # References
-/// - [Linux]
-///
-/// # Examples
-///
-/// ```
-/// # use std::path::Path;
-/// # use std::io;
-/// # use rustix::fs::{AtFlags, StatxFlags};
-/// # use rustix::fd::BorrowedFd;
-/// /// Try to determine if the provided path is a mount root. Will return
-/// /// `Ok(None)` if the kernel is not new enough to support `statx` or
-/// /// [`libc::STATX_ATTR_MOUNT_ROOT`].
-/// fn is_mountpoint(root: BorrowedFd<'_>, path: &Path) -> io::Result<Option<bool>> {
-/// use rustix::fs::{AtFlags, StatxFlags};
-///
-/// let mountroot_flag = libc::STATX_ATTR_MOUNT_ROOT as u64;
-/// match rustix::fs::statx(
-/// root,
-/// path,
-/// AtFlags::NO_AUTOMOUNT | AtFlags::SYMLINK_NOFOLLOW,
-/// StatxFlags::empty(),
-/// ) {
-/// Ok(r) => {
-/// let present = (r.stx_attributes_mask & mountroot_flag) > 0;
-/// Ok(present.then(|| r.stx_attributes & mountroot_flag > 0))
-/// }
-/// Err(e) if e == rustix::io::Errno::NOSYS => Ok(None),
-/// Err(e) => Err(e.into()),
-/// }
-/// }
-/// ```
-///
-/// [Linux]: https://man7.org/linux/man-pages/man2/statx.2.html
-#[inline]
-pub fn statx<P: path::Arg, Fd: AsFd>(
- dirfd: Fd,
- path: P,
- flags: AtFlags,
- mask: StatxFlags,
-) -> io::Result<Statx> {
- path.into_with_c_str(|path| _statx(dirfd.as_fd(), path, flags, mask))
-}
-
-#[cfg(not(feature = "linux_4_11"))]
-mod compat {
- use crate::fd::BorrowedFd;
- use crate::ffi::CStr;
- use crate::fs::AtFlags;
- use crate::{backend, io};
- use core::sync::atomic::{AtomicU8, Ordering};
-
- use backend::fs::types::{Statx, StatxFlags};
-
- // Linux kernel prior to 4.11 and old versions of Docker don't support
- // `statx`. We store the availability in a global to avoid unnecessary
- // syscalls.
- //
- // 0: Unknown
- // 1: Not available
- // 2: Available
- static STATX_STATE: AtomicU8 = AtomicU8::new(0);
-
- #[inline]
- pub fn statx(
- dirfd: BorrowedFd<'_>,
- path: &CStr,
- flags: AtFlags,
- mask: StatxFlags,
- ) -> io::Result<Statx> {
- match STATX_STATE.load(Ordering::Relaxed) {
- 0 => statx_init(dirfd, path, flags, mask),
- 1 => Err(io::Errno::NOSYS),
- _ => backend::fs::syscalls::statx(dirfd, path, flags, mask),
- }
- }
-
- /// The first `statx` call. We don't know if `statx` is available yet.
- fn statx_init(
- dirfd: BorrowedFd<'_>,
- path: &CStr,
- flags: AtFlags,
- mask: StatxFlags,
- ) -> io::Result<Statx> {
- match backend::fs::syscalls::statx(dirfd, path, flags, mask) {
- Err(io::Errno::NOSYS) => statx_error_nosys(),
- Err(io::Errno::PERM) => statx_error_perm(),
- result => {
- STATX_STATE.store(2, Ordering::Relaxed);
- result
- }
- }
- }
-
- /// The first `statx` call failed with `NOSYS` (or something we're treating
- /// like `NOSYS`).
- #[cold]
- fn statx_error_nosys() -> io::Result<Statx> {
- STATX_STATE.store(1, Ordering::Relaxed);
- Err(io::Errno::NOSYS)
- }
-
- /// The first `statx` call failed with `PERM`.
- #[cold]
- fn statx_error_perm() -> io::Result<Statx> {
- // Some old versions of Docker have `statx` fail with `PERM` when it
- // isn't recognized. Check whether `statx` really is available, and if
- // so, fail with `PERM`, and if not, treat it like `NOSYS`.
- if backend::fs::syscalls::is_statx_available() {
- STATX_STATE.store(2, Ordering::Relaxed);
- Err(io::Errno::PERM)
- } else {
- statx_error_nosys()
- }
- }
-}