Function nc::fchown

pub unsafe fn fchown(fd: i32, user: uid_t, group: gid_t) -> Result<(), Errno>

Change ownership of a file.

Example

let filename = "/tmp/nc-fchown";
let fd = unsafe {
    nc::openat(
        nc::AT_FDCWD,
        filename,
        nc::O_CREAT | nc::O_WRONLY | nc::O_TRUNC,
        0o644
    )
};
assert!(fd.is_ok());
let fd = fd.unwrap();
let ret = unsafe { nc::fchown(fd, 0, 0) };
assert!(ret.is_err());
assert_eq!(ret, Err(nc::EPERM));
let ret = unsafe { nc::close(fd) };
assert!(ret.is_ok());
let ret = unsafe { nc::unlinkat(nc::AT_FDCWD, filename, 0) };
assert!(ret.is_ok());