Trait IntoRawFd 

pub trait IntoRawFd {
    // Required method
    fn into_raw_fd(self) -> i32;
}

A trait to express the ability to consume an object and acquire ownership of its raw file descriptor.

Required Methods

fn into_raw_fd(self) -> i32

Consumes this object, returning the raw underlying file descriptor.

This function is typically used to transfer ownership of the underlying file descriptor to the caller. When used in this way, callers are then the unique owners of the file descriptor and must close it once it’s no longer needed.

However, transferring ownership is not strictly required. Use a Into<OwnedFd>::into implementation for an API which strictly transfers ownership.

Example

use std::fs::File;
#[cfg(any(unix, target_os = "wasi"))]
use std::os::fd::{IntoRawFd, RawFd};

let f = File::open("foo.txt")?;
#[cfg(any(unix, target_os = "wasi"))]
let raw_fd: RawFd = f.into_raw_fd();

Implementors

impl IntoRawFd for i32

impl IntoRawFd for async_std::fs::File

Available on Unix or crate feature docs only.

impl IntoRawFd for async_std::net::TcpListener

Available on Unix or crate feature docs only.

impl IntoRawFd for async_std::net::TcpStream

Available on Unix or crate feature docs only.

impl IntoRawFd for async_std::net::UdpSocket

Available on Unix or crate feature docs only.

impl IntoRawFd for async_std::os::unix::net::UnixDatagram

impl IntoRawFd for async_std::os::unix::net::UnixListener

impl IntoRawFd for async_std::os::unix::net::UnixStream

impl IntoRawFd for Dir

impl IntoRawFd for std::fs::File

Available on non-Trusty only.

impl IntoRawFd for PipeReader

Available on non-Trusty only.

impl IntoRawFd for PipeWriter

Available on non-Trusty only.

impl IntoRawFd for std::net::tcp::TcpListener

impl IntoRawFd for std::net::tcp::TcpStream

impl IntoRawFd for std::net::udp::UdpSocket

impl IntoRawFd for OwnedFd

impl IntoRawFd for PidFd

impl IntoRawFd for std::os::unix::net::datagram::UnixDatagram

impl IntoRawFd for std::os::unix::net::listener::UnixListener

impl IntoRawFd for std::os::unix::net::stream::UnixStream

impl IntoRawFd for ChildStderr

impl IntoRawFd for ChildStdin

impl IntoRawFd for ChildStdout