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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/io/fcntl.rs
parent3d48cd3f81164bbfc1a755dc1d4a9a02f98c8ddd (diff)
downloadfparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.tar.xz
fparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.zip
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-//! The Unix `fcntl` function is effectively lots of different functions hidden
-//! behind a single dynamic dispatch interface. In order to provide a type-safe
-//! API, rustix makes them all separate functions so that they can have
-//! dedicated static type signatures.
-//!
-//! `fcntl` functions which are not specific to files or directories live in
-//! the [`io`] module instead.
-//!
-//! [`io`]: crate::io
-
-use crate::{backend, io};
-use backend::fd::{AsFd, OwnedFd, RawFd};
-
-pub use backend::io::types::FdFlags;
-
-/// `fcntl(fd, F_GETFD)`—Returns a file descriptor's flags.
-///
-/// # References
-/// - [POSIX]
-/// - [Linux]
-/// - [Apple]
-/// - [FreeBSD]
-/// - [NetBSD]
-/// - [OpenBSD]
-/// - [DragonFly BSD]
-/// - [illumos]
-/// - [glibc]
-///
-/// [POSIX]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/fcntl.html
-/// [Linux]: https://man7.org/linux/man-pages/man2/fcntl.2.html
-/// [Apple]: https://developer.apple.com/library/archive/documentation/System/Conceptual/ManPages_iPhoneOS/man2/fcntl.2.html
-/// [FreeBSD]: https://man.freebsd.org/cgi/man.cgi?query=fcntl&sektion=2
-/// [NetBSD]: https://man.netbsd.org/fcntl.2
-/// [OpenBSD]: https://man.openbsd.org/fcntl.2
-/// [DragonFly BSD]: https://man.dragonflybsd.org/?command=fcntl&section=2
-/// [illumos]: https://illumos.org/man/2/fcntl
-/// [glibc]: https://www.gnu.org/software/libc/manual/html_node/Control-Operations.html#index-fcntl-function
-#[inline]
-#[doc(alias = "F_GETFD")]
-pub fn fcntl_getfd<Fd: AsFd>(fd: Fd) -> io::Result<FdFlags> {
- backend::io::syscalls::fcntl_getfd(fd.as_fd())
-}
-
-/// `fcntl(fd, F_SETFD, flags)`—Sets a file descriptor's flags.
-///
-/// # References
-/// - [POSIX]
-/// - [Linux]
-/// - [Apple]
-/// - [FreeBSD]
-/// - [NetBSD]
-/// - [OpenBSD]
-/// - [DragonFly BSD]
-/// - [illumos]
-/// - [glibc]
-///
-/// [POSIX]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/fcntl.html
-/// [Linux]: https://man7.org/linux/man-pages/man2/fcntl.2.html
-/// [Apple]: https://developer.apple.com/library/archive/documentation/System/Conceptual/ManPages_iPhoneOS/man2/fcntl.2.html
-/// [FreeBSD]: https://man.freebsd.org/cgi/man.cgi?query=fcntl&sektion=2
-/// [NetBSD]: https://man.netbsd.org/fcntl.2
-/// [OpenBSD]: https://man.openbsd.org/fcntl.2
-/// [DragonFly BSD]: https://man.dragonflybsd.org/?command=fcntl&section=2
-/// [illumos]: https://illumos.org/man/2/fcntl
-/// [glibc]: https://www.gnu.org/software/libc/manual/html_node/Control-Operations.html#index-fcntl-function
-#[inline]
-#[doc(alias = "F_SETFD")]
-pub fn fcntl_setfd<Fd: AsFd>(fd: Fd, flags: FdFlags) -> io::Result<()> {
- backend::io::syscalls::fcntl_setfd(fd.as_fd(), flags)
-}
-
-/// `fcntl(fd, F_DUPFD_CLOEXEC)`—Creates a new `OwnedFd` instance, with value
-/// at least `min`, that has `O_CLOEXEC` set and that shares the same
-/// underlying [file description] as `fd`.
-///
-/// POSIX guarantees that `F_DUPFD_CLOEXEC` will use the lowest unused file
-/// descriptor which is at least `min`, however it is not safe in general to
-/// rely on this, as file descriptors may be unexpectedly allocated on other
-/// threads or in libraries.
-///
-/// # References
-/// - [POSIX]
-/// - [Linux]
-/// - [Apple]
-/// - [FreeBSD]
-/// - [NetBSD]
-/// - [OpenBSD]
-/// - [DragonFly BSD]
-/// - [illumos]
-/// - [glibc]
-///
-/// [POSIX]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/fcntl.html
-/// [Linux]: https://man7.org/linux/man-pages/man2/fcntl.2.html
-/// [Apple]: https://developer.apple.com/library/archive/documentation/System/Conceptual/ManPages_iPhoneOS/man2/fcntl.2.html
-/// [FreeBSD]: https://man.freebsd.org/cgi/man.cgi?query=fcntl&sektion=2
-/// [NetBSD]: https://man.netbsd.org/fcntl.2
-/// [OpenBSD]: https://man.openbsd.org/fcntl.2
-/// [DragonFly BSD]: https://man.dragonflybsd.org/?command=fcntl&section=2
-/// [illumos]: https://illumos.org/man/2/fcntl
-/// [glibc]: https://www.gnu.org/software/libc/manual/html_node/Control-Operations.html#index-fcntl-function
-#[cfg(not(any(target_os = "espidf", target_os = "wasi")))]
-#[inline]
-#[doc(alias = "F_DUPFD_CLOEXEC")]
-pub fn fcntl_dupfd_cloexec<Fd: AsFd>(fd: Fd, min: RawFd) -> io::Result<OwnedFd> {
- backend::io::syscalls::fcntl_dupfd_cloexec(fd.as_fd(), min)
-}
-
-/// `fcntl(fd, F_DUPFD)`—Creates a new `OwnedFd` instance, with value at
-/// least `min`, that shares the same underlying [file description] as `fd`.
-///
-/// POSIX guarantees that `F_DUPFD` will use the lowest unused file descriptor
-/// which is at least `min`, however it is not safe in general to rely on this,
-/// as file descriptors may be unexpectedly allocated on other threads or in
-/// libraries.
-///
-/// # References
-/// - [POSIX]
-/// - [Linux]
-/// - [Apple]
-/// - [FreeBSD]
-/// - [NetBSD]
-/// - [OpenBSD]
-/// - [DragonFly BSD]
-/// - [illumos]
-/// - [glibc]
-///
-/// [POSIX]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/fcntl.html
-/// [Linux]: https://man7.org/linux/man-pages/man2/fcntl.2.html
-/// [Apple]: https://developer.apple.com/library/archive/documentation/System/Conceptual/ManPages_iPhoneOS/man2/fcntl.2.html
-/// [FreeBSD]: https://man.freebsd.org/cgi/man.cgi?query=fcntl&sektion=2
-/// [NetBSD]: https://man.netbsd.org/fcntl.2
-/// [OpenBSD]: https://man.openbsd.org/fcntl.2
-/// [DragonFly BSD]: https://man.dragonflybsd.org/?command=fcntl&section=2
-/// [illumos]: https://illumos.org/man/2/fcntl
-/// [glibc]: https://www.gnu.org/software/libc/manual/html_node/Control-Operations.html#index-fcntl-function
-#[cfg(target_os = "espidf")]
-#[inline]
-#[doc(alias = "F_DUPFD")]
-pub fn fcntl_dupfd<Fd: AsFd>(fd: Fd, min: RawFd) -> io::Result<OwnedFd> {
- backend::io::syscalls::fcntl_dupfd(fd.as_fd(), min)
-}