pub trait IntoRawFd {
fn into_raw_fd(self) -> i32;
}
Expand description
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
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(unix)]
use std::os::unix::io::{IntoRawFd, RawFd};
#[cfg(target_os = "wasi")]
use std::os::wasi::io::{IntoRawFd, RawFd};
let f = File::open("foo.txt")?;
#[cfg(any(unix, target_os = "wasi"))]
let raw_fd: RawFd = f.into_raw_fd();
Implementations on Foreign Types
1.10.0 · sourceimpl IntoRawFd for UnixStream
impl IntoRawFd for UnixStream
fn into_raw_fd(self) -> i32
sourceimpl IntoRawFd for ChildStdout
impl IntoRawFd for ChildStdout
fn into_raw_fd(self) -> i32
sourceimpl IntoRawFd for ChildStdin
impl IntoRawFd for ChildStdin
fn into_raw_fd(self) -> i32
sourceimpl IntoRawFd for TcpListener
impl IntoRawFd for TcpListener
fn into_raw_fd(self) -> i32
1.10.0 · sourceimpl IntoRawFd for UnixDatagram
impl IntoRawFd for UnixDatagram
fn into_raw_fd(self) -> i32
sourceimpl IntoRawFd for ChildStderr
impl IntoRawFd for ChildStderr
fn into_raw_fd(self) -> i32
1.10.0 · sourceimpl IntoRawFd for UnixListener
impl IntoRawFd for UnixListener
fn into_raw_fd(self) -> i32
Implementors
impl IntoRawFd for RawReadable
RawReadable
doesn’t own its handle.
impl IntoRawFd for RawWriteable
RawWriteable
doesn’t own its handle.