Trait IntoRawFd

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

Available on Unix only.

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 File

impl IntoRawFd for PipeReader

impl IntoRawFd for PipeWriter

impl IntoRawFd for wiwi::prelude::std::net::TcpListener

impl IntoRawFd for wiwi::prelude::std::net::TcpStream

impl IntoRawFd for wiwi::prelude::std::net::UdpSocket

impl IntoRawFd for ChildStderr

impl IntoRawFd for ChildStdin

impl IntoRawFd for ChildStdout

impl IntoRawFd for OwnedFd

impl IntoRawFd for PidFd

impl IntoRawFd for wiwi::prelude::std::os::unix::net::UnixDatagram

impl IntoRawFd for wiwi::prelude::std::os::unix::net::UnixListener

impl IntoRawFd for wiwi::prelude::std::os::unix::net::UnixStream

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 TcpListener

Available on Unix or HermitCore or WASI only.

impl IntoRawFd for TcpSocket

Available on docsrs or Unix only.

impl IntoRawFd for TcpStream

Available on Unix or HermitCore or WASI only.

impl IntoRawFd for UdpSocket

Available on Unix or HermitCore or WASI only.

impl IntoRawFd for UnixDatagram

impl IntoRawFd for UnixListener

impl IntoRawFd for UnixSocket

impl IntoRawFd for UnixStream