Function rustix::fs::fcntl_add_seals
pub fn fcntl_add_seals<Fd: AsFd>(fd: &Fd, seals: SealFlags) -> io::Result<()>The portability is definied by:
#[cfg(any(target_os = "android", target_os = "linux", target_os = "fuchsia",
target_os = "freebsd",))]