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Diffstat (limited to 'third_party/rust/rustix/src/io/close.rs')
| -rw-r--r-- | third_party/rust/rustix/src/io/close.rs | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/third_party/rust/rustix/src/io/close.rs b/third_party/rust/rustix/src/io/close.rs new file mode 100644 index 0000000000..474d252f4f --- /dev/null +++ b/third_party/rust/rustix/src/io/close.rs @@ -0,0 +1,55 @@ +//! The unsafe `close` for raw file descriptors. +//! +//! # Safety +//! +//! Operating on raw file descriptors is unsafe. +#![allow(unsafe_code)] + +use crate::backend; +use backend::fd::RawFd; + +/// `close(raw_fd)`—Closes a `RawFd` directly. +/// +/// Most users won't need to use this, as `OwnedFd` automatically closes its +/// file descriptor on `Drop`. +/// +/// This function does not return a `Result`, as it is the [responsibility] of +/// filesystem designers to not return errors from `close`. Users who chose to +/// use NFS or similar filesystems should take care to monitor for problems +/// externally. +/// +/// [responsibility]: https://lwn.net/Articles/576518/ +/// +/// # References +/// - [Beej's Guide to Network Programming] +/// - [POSIX] +/// - [Linux] +/// - [Apple] +/// - [Winsock] +/// - [FreeBSD] +/// - [NetBSD] +/// - [OpenBSD] +/// - [DragonFly BSD] +/// - [illumos] +/// - [glibc] +/// +/// [Beej's Guide to Network Programming]: https://beej.us/guide/bgnet/html/split/system-calls-or-bust.html#close-and-shutdownget-outta-my-face +/// [POSIX]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/close.html +/// [Linux]: https://man7.org/linux/man-pages/man2/close.2.html +/// [Apple]: https://developer.apple.com/library/archive/documentation/System/Conceptual/ManPages_iPhoneOS/man2/close.2.html#//apple_ref/doc/man/2/close +/// [Winsock]: https://docs.microsoft.com/en-us/windows/win32/api/winsock2/nf-winsock2-closesocket +/// [FreeBSD]: https://man.freebsd.org/cgi/man.cgi?query=close&sektion=2 +/// [NetBSD]: https://man.netbsd.org/close.2 +/// [OpenBSD]: https://man.openbsd.org/close.2 +/// [DragonFly BSD]: https://man.dragonflybsd.org/?command=close§ion=2 +/// [illumos]: https://illumos.org/man/2/close +/// [glibc]: https://www.gnu.org/software/libc/manual/html_node/Opening-and-Closing-Files.html#index-close +/// +/// # Safety +/// +/// This function takes a `RawFd`, which must be valid before the call, and is +/// not valid after the call. +#[inline] +pub unsafe fn close(raw_fd: RawFd) { + backend::io::syscalls::close(raw_fd) +} |