Trait FromFd

pub trait FromFd {
    // Required method
    fn from_fd(owned: OwnedFd) -> Self;

    // Provided method
    fn from_into_fd<Owned: Into<OwnedFd>>(into_owned: Owned) -> Self
       where Self: Sized + From<OwnedFd> { ... }
}

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

Required Methods

fn from_fd(owned: OwnedFd) -> Self

👎Deprecated since 1.0.0: FromFd::from_fd is replaced by From<OwnedFd>::from

Constructs a new instance of Self from the given file descriptor.

Example

use std::fs::File;
use io_lifetimes::{FromFd, IntoFd, OwnedFd};

let f = File::open("foo.txt")?;
let owned_fd: OwnedFd = f.into_fd();
let f = File::from_fd(owned_fd);

Provided Methods

fn from_into_fd<Owned: Into<OwnedFd>>(into_owned: Owned) -> Self

where Self: Sized + From<OwnedFd>,

Constructs a new instance of Self from the given file descriptor converted from into_owned.

Example

use std::fs::File;
use io_lifetimes::{FromFd, IntoFd};

let f = File::open("foo.txt")?;
let f = File::from_into_fd(f);

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors

impl<T: From<OwnedFd>> FromFd for T