Available on Unix only.
Expand description
Change the owner and group of the file referenced by the specified open file descriptor.
For semantics and required privileges, see chown.
Examples
#![feature(unix_chown)]
use std::os::unix::fs;
fn main() -> std::io::Result<()> {
    let f = std::fs::File::open("/file")?;
    fs::fchown(&f, Some(0), Some(0))?;
    Ok(())
}