blob: d66e28d0e984eda6f60e6e61fcfe7d8be60757cb [file] [log] [blame]
Erik Andersene49d5ec2000-02-08 19:58:47 +00001/* vi: set sw=4 ts=4: */
Eric Andersenc4996011999-10-20 22:08:37 +00002/*
3 * Mini halt implementation for busybox
4 *
5 *
6 * Copyright (C) 1995, 1996 by Bruce Perens <bruce@pixar.com>.
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 *
22 */
23
Eric Andersen3570a342000-09-25 21:45:58 +000024#include "busybox.h"
Eric Andersencc8ed391999-10-05 16:24:54 +000025#include <signal.h>
26
Erik Andersene49d5ec2000-02-08 19:58:47 +000027extern int halt_main(int argc, char **argv)
Eric Andersencc8ed391999-10-05 16:24:54 +000028{
Erik Andersen2ac2fae2000-03-07 23:32:17 +000029#ifdef BB_FEATURE_LINUXRC
Erik Andersene49d5ec2000-02-08 19:58:47 +000030 /* don't assume init's pid == 1 */
Eric Andersen332394b2001-07-05 16:09:32 +000031 pid_t *pid = find_pid_by_name("init");
Eric Andersen371ca192001-10-03 21:26:12 +000032 if (!pid || *pid<=0) {
Eric Andersen11fdb8a2001-10-18 04:04:34 +000033 pid = find_pid_by_name("linuxrc");
Eric Andersen371ca192001-10-03 21:26:12 +000034 if (!pid || *pid<=0)
35 error_msg_and_die("no process killed");
36 }
Eric Andersen332394b2001-07-05 16:09:32 +000037 return(kill(*pid, SIGUSR1));
Erik Andersen2ac2fae2000-03-07 23:32:17 +000038#else
Eric Andersenb6106152000-06-19 17:25:40 +000039 return(kill(1, SIGUSR1));
Erik Andersen2ac2fae2000-03-07 23:32:17 +000040#endif
Eric Andersencc8ed391999-10-05 16:24:54 +000041}