Function nc::rt_sigaction

pub fn rt_sigaction(
    sig: i32, 
    act: &sigaction_t, 
    old_act: &mut sigaction_t, 
    sigsetsize: size_t
) -> Result<(), Errno>

Examine and change a signal action.

use std::mem::size_of;

fn handle_sigterm(sig: i32) {
    assert_eq!(sig, nc::SIGTERM);
}

let sa = nc::sigaction_t {
    sa_handler: handle_sigterm as nc::sighandler_t,
    sa_mask: nc::SA_RESTART | nc::SA_SIGINFO | nc::SA_ONSTACK,
    ..nc::sigaction_t::default()
};
let mut old_sa = nc::sigaction_t::default();
let ret = nc::rt_sigaction(nc::SIGTERM, &sa, &mut old_sa, size_of::<nc::sigset_t>());
let ret = nc::kill(nc::getpid(), nc::SIGTERM);
assert!(ret.is_ok());