use libc::{futimens, timespec};
use std::unix::io::AsRawFd;

fn main() -> anyhow::Result<()> {
    let f = std::fs::File::create("foo.dat")?;
    let fd = f.as_raw_fd();
    let ts = timespec {
        tv_sec: 1,
        tv_nsec: 42,
    };
    let ret = futimens(fd, &ts);
    if ret == -1 {
        panic!("futimens failed");
    }

    Ok(())
}