kill_cad_pid
kill_cad_pid(SIGINT, 1)) {
if (shutting_down || kill_cad_pid(SIGINT, 1)) {
kill_cad_pid(SIGPWR, 1);
kill_cad_pid(power_signal, 1);
kill_cad_pid(SIGINT, 1); /* Ask init to reboot us */
if (kill_cad_pid(SIGINT, 1)) {
kill_cad_pid(SIGINT, 1); /* ctrl_alt_del */
kill_cad_pid(SIGINT, 1); /* ctrl_alt_del */
kill_cad_pid(SIGINT, 1);