IntoRawFd in std::os::fd - Rust
Description: A trait to express the ability to consume an object and acquire ownership of its raw file descriptor.

## IntoRawFd

# Trait IntoRawFd

1.66.0 · Source

    pub trait IntoRawFd {
        // Required method
        fn into_raw_fd(self) -> RawFd;
    }

Available on Unix or HermitCore or `target_os=trusty` or WASI or `target_os=motor` only.
Expand description

A trait to express the ability to consume an object and acquire ownership of its raw file descriptor.

## Required Methods§

1.4.0 · Source

#### fn into_raw_fd(self) -> RawFd

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(any(unix, target_os = "wasi"))]
    use std::os::fd::{IntoRawFd, RawFd};

    let f = File::open("foo.txt")?;
    #[cfg(any(unix, target_os = "wasi"))]
    let raw_fd: RawFd = f.into_raw_fd();

## Implementors§

1.4.0 · Source§

### impl IntoRawFd for File

Available on non-`target_os=trusty` only.
1.87.0 · Source§

### impl IntoRawFd for PipeReader

Available on non-`target_os=trusty` only.
1.87.0 · Source§

### impl IntoRawFd for PipeWriter

Available on non-`target_os=trusty` only.
1.4.0 · Source§

### impl IntoRawFd for TcpListener

Available on non-`target_os=trusty` only.
1.4.0 · Source§

### impl IntoRawFd for TcpStream

Available on non-`target_os=trusty` only.
1.4.0 · Source§

### impl IntoRawFd for UdpSocket

Available on non-`target_os=trusty` only.
1.63.0 · Source§

### impl IntoRawFd for OwnedFd

1.48.0 · Source§

### impl IntoRawFd for RawFd