Function nix::unistd::close

pub fn close(fd: RawFd) -> Result<()>

Close a raw file descriptor

Be aware that many Rust types implicitly close-on-drop, including std::fs::File. Explicitly closing them with this method too can result in a double-close condition, which can cause confusing EBADF errors in seemingly unrelated code. Caveat programmer. See also close(2).

Examples

use std::os::unix::io::AsRawFd;
use nix::unistd::close;

fn main() {
    let f = tempfile::tempfile().unwrap();
    close(f.as_raw_fd()).unwrap();   // Bad!  f will also close on drop!
}

use std::os::unix::io::IntoRawFd;
use nix::unistd::close;

fn main() {
    let f = tempfile::tempfile().unwrap();
    close(f.into_raw_fd()).unwrap(); // Good.  into_raw_fd consumes f
}