[rustc.git] / vendor / rustix / src / io / is_read_write.rs

//! The [`is_read_write`] function.
//!
//! [`is_read_write`]: https://docs.rs/rustix/*/rustix/io/fn.is_read_write.html

use crate::{backend, io};
use backend::fd::AsFd;

/// Returns a pair of booleans indicating whether the file descriptor is
/// readable and/or writable, respectively.
///
/// Unlike [`is_file_read_write`], this correctly detects whether sockets
/// have been shutdown, partially or completely.
///
/// [`is_file_read_write`]: crate::fs::is_file_read_write
#[inline]
#[cfg_attr(doc_cfg, doc(cfg(all(feature = "fs", feature = "net"))))]
pub fn is_read_write<Fd: AsFd>(fd: Fd) -> io::Result<(bool, bool)> {
    backend::io::syscalls::is_read_write(fd.as_fd())
}
Commit	Line	Data
064997fb	1	//! The [`is_read_write`] function.
49aad941 FG	2	//!
49aad941 FG	3	//! [`is_read_write`]: https://docs.rs/rustix/*/rustix/io/fn.is_read_write.html
064997fb	4
487cf647	5	use crate::{backend, io};
487cf647	6	use backend::fd::AsFd;
064997fb FG	7
	8	/// Returns a pair of booleans indicating whether the file descriptor is
	9	/// readable and/or writable, respectively.
	10	///
	11	/// Unlike [`is_file_read_write`], this correctly detects whether sockets
	12	/// have been shutdown, partially or completely.
	13	///
	14	/// [`is_file_read_write`]: crate::fs::is_file_read_write
	15	#[inline]
487cf647	16	#[cfg_attr(doc_cfg, doc(cfg(all(feature = "fs", feature = "net"))))]
064997fb	17	pub fn is_read_write<Fd: AsFd>(fd: Fd) -> io::Result<(bool, bool)> {
487cf647	18	backend::io::syscalls::is_read_write(fd.as_fd())
064997fb	19	}