| //! The [`is_read_write`] function. |
| |
| #[cfg(all(feature = "fs", feature = "net"))] |
| use crate::{backend, io}; |
| #[cfg(all(feature = "fs", feature = "net"))] |
| 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(all(feature = "fs", feature = "net"))] |
| #[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()) |
| } |
