Trait std::os::unix::io::FromRawFd

pub trait FromRawFd {
    unsafe fn from_raw_fd(fd: RawFd) -> Self;
}

This is supported on Unix only.

A trait to express the ability to construct an object from a raw file descriptor.

Required methods

unsafe fn from_raw_fd(fd: RawFd) -> Self

Constructs a new instance of Self from the given raw file descriptor.

This function consumes ownership of the specified file descriptor. The returned object will take responsibility for closing it when the object goes out of scope.

This function is also unsafe as the primitives currently returned have the contract that they are the sole owner of the file descriptor they are wrapping. Usage of this function could accidentally allow violating this contract which can cause memory unsafety in code that relies on it being true.

Example

use std::fs::File;
use std::os::unix::io::{FromRawFd, IntoRawFd, RawFd};

let f = File::open("foo.txt")?;
let raw_fd: RawFd = f.into_raw_fd();
// SAFETY: no other functions should call `from_raw_fd`, so there
// is only one owner for the file descriptor.
let f = unsafe { File::from_raw_fd(raw_fd) };

Implementors

impl FromRawFd for File

unsafe fn from_raw_fd(fd: RawFd) -> File

impl FromRawFd for TcpListener

unsafe fn from_raw_fd(fd: RawFd) -> TcpListener

impl FromRawFd for TcpStream

unsafe fn from_raw_fd(fd: RawFd) -> TcpStream

impl FromRawFd for UdpSocket

unsafe fn from_raw_fd(fd: RawFd) -> UdpSocket

impl FromRawFd for Stdio

unsafe fn from_raw_fd(fd: RawFd) -> Stdio

impl FromRawFd for UnixDatagram

unsafe fn from_raw_fd(fd: RawFd) -> UnixDatagram

impl FromRawFd for UnixListener

unsafe fn from_raw_fd(fd: RawFd) -> UnixListener

impl FromRawFd for UnixStream

unsafe fn from_raw_fd(fd: RawFd) -> UnixStream

impl FromRawFd for RawFd

unsafe fn from_raw_fd(fd: RawFd) -> RawFd