Trait unsafe_io::os::posish::FromRawFd1.1.0[−][src]

pub trait FromRawFd {
    pub unsafe fn from_raw_fd(fd: i32) -> Self;
}

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

Required methods

`pub unsafe fn from_raw_fd(fd: i32) -> Self`[src]

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) };

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Implementations on Foreign Types

`impl FromRawFd for File`[src]

`pub unsafe fn from_raw_fd(fd: i32) -> File`[src]

`impl FromRawFd for TcpStream`[src]

`pub unsafe fn from_raw_fd(fd: i32) -> TcpStream`[src]

`impl FromRawFd for UnixListener`[src]

`pub unsafe fn from_raw_fd(fd: i32) -> UnixListener`[src]

`impl FromRawFd for UnixStream`[src]

`pub unsafe fn from_raw_fd(fd: i32) -> UnixStream`[src]

`impl FromRawFd for UdpSocket`[src]

`pub unsafe fn from_raw_fd(fd: i32) -> UdpSocket`[src]

`impl FromRawFd for Stdio`[src]

`pub unsafe fn from_raw_fd(fd: i32) -> Stdio`[src]

`impl FromRawFd for UnixDatagram`[src]

`pub unsafe fn from_raw_fd(fd: i32) -> UnixDatagram`[src]

`impl FromRawFd for i32`[src]

`pub unsafe fn from_raw_fd(fd: i32) -> i32`[src]

`impl FromRawFd for TcpListener`[src]

`pub unsafe fn from_raw_fd(fd: i32) -> TcpListener`[src]

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Implementors

`impl FromRawFd for UnsafeFile`[src]

UnsafeFile doesn’t own its handle; see the comments for impl AsRawFd for UnsafeHandle.

`unsafe fn from_raw_fd(raw_fd: RawFd) -> Self`[src]

`impl FromRawFd for UnsafeHandle`[src]

UnsafeHandle doesn’t own its handle; see the comments for impl AsRawFd for UnsafeHandle.

`unsafe fn from_raw_fd(raw_fd: RawFd) -> Self`[src]

`impl FromRawFd for UnsafeReadable`[src]

UnsafeReadable doesn’t own its handle; see the comments for impl AsRawFd for UnsafeHandle.

`unsafe fn from_raw_fd(raw_fd: RawFd) -> Self`[src]

`impl FromRawFd for UnsafeSocket`[src]

UnsafeSocket doesn’t own its handle; see the comments for impl AsRawFd for UnsafeHandle.

`unsafe fn from_raw_fd(raw_fd: RawFd) -> Self`[src]

`impl FromRawFd for UnsafeWriteable`[src]

UnsafeWriteable doesn’t own its handle; see the comments for impl AsRawFd for UnsafeHandle.

`unsafe fn from_raw_fd(raw_fd: RawFd) -> Self`[src]

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