diff options
Diffstat (limited to 'vendor/rustix-0.36.5/src/fs/fcntl.rs')
-rw-r--r-- | vendor/rustix-0.36.5/src/fs/fcntl.rs | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/vendor/rustix-0.36.5/src/fs/fcntl.rs b/vendor/rustix-0.36.5/src/fs/fcntl.rs new file mode 100644 index 000000000..80ac858c0 --- /dev/null +++ b/vendor/rustix-0.36.5/src/fs/fcntl.rs @@ -0,0 +1,87 @@ +//! 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. + +use crate::{backend, io}; +use backend::fd::AsFd; +use backend::fs::types::OFlags; + +// These `fcntl` functions like in the `io` module because they're not specific +// to files, directories, or memfd objects. We re-export them here in the `fs` +// module because the other the `fcntl` functions are here. +#[cfg(not(target_os = "wasi"))] +pub use crate::io::fcntl_dupfd_cloexec; +pub use crate::io::{fcntl_getfd, fcntl_setfd}; + +/// `fcntl(fd, F_GETFL)`—Returns a file descriptor's access mode and status. +/// +/// # References +/// - [POSIX] +/// - [Linux] +/// +/// [POSIX]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/fcntl.html +/// [Linux]: https://man7.org/linux/man-pages/man2/fcntl.2.html +#[inline] +#[doc(alias = "F_GETFL")] +pub fn fcntl_getfl<Fd: AsFd>(fd: Fd) -> io::Result<OFlags> { + backend::fs::syscalls::fcntl_getfl(fd.as_fd()) +} + +/// `fcntl(fd, F_SETFL, flags)`—Sets a file descriptor's status. +/// +/// # References +/// - [POSIX] +/// - [Linux] +/// +/// [POSIX]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/fcntl.html +/// [Linux]: https://man7.org/linux/man-pages/man2/fcntl.2.html +#[inline] +#[doc(alias = "F_SETFL")] +pub fn fcntl_setfl<Fd: AsFd>(fd: Fd, flags: OFlags) -> io::Result<()> { + backend::fs::syscalls::fcntl_setfl(fd.as_fd(), flags) +} + +/// `fcntl(fd, F_GET_SEALS)` +/// +/// # References +/// - [Linux] +/// +/// [Linux]: https://man7.org/linux/man-pages/man2/fcntl.2.html +#[cfg(any( + target_os = "android", + target_os = "freebsd", + target_os = "fuchsia", + target_os = "linux", +))] +#[inline] +#[doc(alias = "F_GET_SEALS")] +pub fn fcntl_get_seals<Fd: AsFd>(fd: Fd) -> io::Result<SealFlags> { + backend::fs::syscalls::fcntl_get_seals(fd.as_fd()) +} + +#[cfg(any( + target_os = "android", + target_os = "freebsd", + target_os = "fuchsia", + target_os = "linux", +))] +pub use backend::fs::types::SealFlags; + +/// `fcntl(fd, F_ADD_SEALS)` +/// +/// # References +/// - [Linux] +/// +/// [Linux]: https://man7.org/linux/man-pages/man2/fcntl.2.html +#[cfg(any( + target_os = "android", + target_os = "freebsd", + target_os = "fuchsia", + target_os = "linux", +))] +#[inline] +#[doc(alias = "F_ADD_SEALS")] +pub fn fcntl_add_seals<Fd: AsFd>(fd: Fd, seals: SealFlags) -> io::Result<()> { + backend::fs::syscalls::fcntl_add_seals(fd.as_fd(), seals) +} |