pub trait IntoRawFd {
// Required method
fn into_raw_fd(self) -> i32;
}
馃憥Deprecated
Expand description
A trait to express the ability to consume an object and acquire ownership of its raw file descriptor.
Required Methods搂
1.4.0 路 Sourcefn into_raw_fd(self) -> i32
fn into_raw_fd(self) -> i32
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鈥檚 no longer needed.
However, transferring ownership is not strictly required. Use a
Into<OwnedFd>::into
implementation for an API which strictly
transfers ownership.
搂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();