# Trait std::os::unix::io::AsRawFd 1.0.0 [−] [src]

    pub trait AsRawFd {
        fn as_raw_fd(&self) -> RawFd;
    }

A trait to extract the raw unix file descriptor from an underlying object.

This is only available on unix platforms and must be imported in order to call the method. Windows platforms have a corresponding `AsRawHandle` and `AsRawSocket` set of traits.

## Required Methods

### `fn as_raw_fd(&self) -> RawFd`

Extracts the raw file descriptor.

This method does not pass ownership of the raw file descriptor to the caller. The descriptor is only guaranteed to be valid while the original object has not yet been destroyed.

## Implementors

- `impl AsRawFd for File`
- `impl AsRawFd for TcpStream`
- `impl AsRawFd for TcpListener`
- `impl AsRawFd for UdpSocket`
- `impl AsRawFd for ChildStdin`
- `impl AsRawFd for ChildStdout`
- `impl AsRawFd for ChildStderr`
- `impl AsRawFd for UnixStream`
- `impl AsRawFd for UnixListener`
- `impl AsRawFd for UnixDatagram`

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