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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/process/pidfd_getfd.rs
parent3d48cd3f81164bbfc1a755dc1d4a9a02f98c8ddd (diff)
downloadfparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.tar.xz
fparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.zip
Deleted vendor folder
Diffstat (limited to 'vendor/rustix/src/process/pidfd_getfd.rs')
-rw-r--r--vendor/rustix/src/process/pidfd_getfd.rs56
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diff --git a/vendor/rustix/src/process/pidfd_getfd.rs b/vendor/rustix/src/process/pidfd_getfd.rs
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--- a/vendor/rustix/src/process/pidfd_getfd.rs
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@@ -1,56 +0,0 @@
-//! The [`pidfd_getfd`] function and supporting types.
-
-#![allow(unsafe_code)]
-use crate::fd::OwnedFd;
-use crate::{backend, io};
-use backend::fd::{AsFd, RawFd};
-
-/// Raw file descriptor in another process.
-///
-/// A distinct type alias is used here to inform the user that normal file
-/// descriptors from the calling process should not be used. The provided file
-/// descriptor is used by the kernel as the index into the file descriptor
-/// table of an entirely different process.
-pub type ForeignRawFd = RawFd;
-
-bitflags::bitflags! {
- /// All flags are reserved for future use.
- #[repr(transparent)]
- #[derive(Copy, Clone, Eq, PartialEq, Hash, Debug)]
- pub struct PidfdGetfdFlags: backend::c::c_uint {
- /// <https://docs.rs/bitflags/*/bitflags/#externally-defined-flags>
- const _ = !0;
- }
-}
-
-/// `syscall(SYS_pidfd_getfd, pidfd, flags)`—Obtain a duplicate of another
-/// process' file descriptor.
-///
-/// # References
-/// - [Linux]
-///
-/// # Warning
-///
-/// This function is generally safe for the calling process, but it can impact
-/// the target process in unexpected ways. If you want to ensure that Rust I/O
-/// safety assumptions continue to hold in the target process, then the target
-/// process must have communicated the file description number to the calling
-/// process from a value of a type that implements `AsRawFd`, and the target
-/// process must not drop that value until after the calling process has
-/// returned from `pidfd_getfd`.
-///
-/// When `pidfd_getfd` is used to debug the target, or the target is not a Rust
-/// aplication, or `pidfd_getfd` is used in any other way, then extra care
-/// should be taken to avoid unexpected behaviour or crashes.
-///
-/// For further details, see the references above.
-///
-/// [Linux]: https://man7.org/linux/man-pages/man2/pidfd_getfd.2.html
-#[inline]
-pub fn pidfd_getfd<Fd: AsFd>(
- pidfd: Fd,
- targetfd: ForeignRawFd,
- flags: PidfdGetfdFlags,
-) -> io::Result<OwnedFd> {
- backend::process::syscalls::pidfd_getfd(pidfd.as_fd(), targetfd, flags)
-}