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();

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl IntoRawFd for ChildStderr

impl IntoRawFd for ChildStdin

impl IntoRawFd for ChildStdout

impl IntoRawFd for Dir

impl IntoRawFd for File

Available on non-Trusty only.

impl IntoRawFd for Handle

impl IntoRawFd for OwnedFd

impl IntoRawFd for PipeReader

Available on non-Trusty only.

impl IntoRawFd for PipeWriter

Available on non-Trusty only.

impl IntoRawFd for Receiver

Available on crate feature os-ext only.

impl IntoRawFd for Sender

Available on crate feature os-ext only.

impl IntoRawFd for Socket

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

impl IntoRawFd for TcpListener

Available on Hermit or Unix or WASI only.

impl IntoRawFd for TcpSocket

Available on Unix, or WASI, or docsrs only.

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

impl IntoRawFd for TcpStream

Available on Hermit or Unix or WASI only.

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

impl IntoRawFd for UdpSocket

Available on Hermit or Unix or WASI only.

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

impl IntoRawFd for UnixDatagram

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

impl IntoRawFd for UnixListener

impl IntoRawFd for UnixSocket

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

impl IntoRawFd for UnixStream

impl IntoRawFd for i32