# 1.1.0[−][src]Trait std::os::unix::io::FromRawFd

    pub trait FromRawFd {
        pub 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

### `pub unsafe fn from_raw_fd(fd: RawFd) -> 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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## Implementors

### `impl FromRawFd for File`[src]

#### `pub unsafe fn from_raw_fd(fd: RawFd) -> Fileⓘ

### Notable traits for File

`impl Read for Fileimpl Read for &Fileimpl Write for Fileimpl Write for &File`
`[src]

### `impl FromRawFd for TcpListener`[src]

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

### `impl FromRawFd for TcpStream`[src]

#### `pub unsafe fn from_raw_fd(fd: RawFd) -> TcpStreamⓘ

### Notable traits for TcpStream

`impl Read for TcpStreamimpl Read for &TcpStreamimpl Write for TcpStreamimpl Write for &TcpStream`
`[src]

### `impl FromRawFd for UdpSocket`[src]

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

### `impl FromRawFd for UnixDatagram`[src]

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

### `impl FromRawFd for UnixListener`[src]

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

### `impl FromRawFd for UnixStream`[src]

#### `pub unsafe fn from_raw_fd(fd: RawFd) -> UnixStreamⓘ

### Notable traits for UnixStream

`impl Read for UnixStreamimpl<'a> Read for &'a UnixStreamimpl Write for UnixStreamimpl<'a> Write for &'a UnixStream`
`[src]

### `impl FromRawFd for Stdio`[src]

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

### `impl FromRawFd for RawFd`[src]

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

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