summaryrefslogtreecommitdiffstats
path: root/vendor/rustix-0.36.5/src/fs/statx.rs
diff options
context:
space:
mode:
Diffstat (limited to 'vendor/rustix-0.36.5/src/fs/statx.rs')
-rw-r--r--vendor/rustix-0.36.5/src/fs/statx.rs91
1 files changed, 0 insertions, 91 deletions
diff --git a/vendor/rustix-0.36.5/src/fs/statx.rs b/vendor/rustix-0.36.5/src/fs/statx.rs
deleted file mode 100644
index 383f109ce..000000000
--- a/vendor/rustix-0.36.5/src/fs/statx.rs
+++ /dev/null
@@ -1,91 +0,0 @@
-//! Linux `statx`.
-
-use crate::fd::{AsFd, BorrowedFd};
-use crate::ffi::CStr;
-use crate::fs::AtFlags;
-use crate::{backend, io, path};
-use core::sync::atomic::{AtomicU8, Ordering};
-
-pub use backend::fs::types::{Statx, StatxFlags, StatxTimestamp};
-
-/// `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]
-///
-/// [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))
-}
-
-// Linux kernel prior to 4.11 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]
-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()
- }
-}