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gerrit.nordix.org / codeaurora / busybox / 82b39e83ab13660f0b76a52519e1ac44e30fff7c / . / init / halt.c
blob: a6cf48bbe1fb4bec383b01fd82914cebaf984624 [file] [log] [blame]
Erik Andersene49d5ec2000-02-08 19:58:47 +0000[diff] [blame]1/* vi: set sw=4 ts=4: */
Eric Andersenc4996011999-10-20 22:08:37 +0000[diff] [blame]2/*
Rob Landley64612912006-01-30 08:31:37 +0000[diff] [blame]3 * Poweroff reboot and halt, oh my.
Eric Andersenc4996011999-10-20 22:08:37 +0000[diff] [blame]4 *
Rob Landley64612912006-01-30 08:31:37 +0000[diff] [blame]5 * Copyright 2006 by Rob Landley <rob@landley.net>
Eric Andersenc4996011999-10-20 22:08:37 +0000[diff] [blame]6 *
Rob Landleye9a7a622006-09-22 02:52:41 +0000[diff] [blame]7 * Licensed under GPL version 2, see file LICENSE in this tarball for details.
Eric Andersenc4996011999-10-20 22:08:37 +0000[diff] [blame]8 */
9
Bernhard Reutner-Fischere15d7572006-06-02 20:56:16 +0000[diff] [blame]10#include "busybox.h"
Eric Andersen02462222003-07-22 09:41:39 +0000[diff] [blame]11#include <sys/reboot.h>
Eric Andersencc8ed391999-10-05 16:24:54 +0000[diff] [blame]12
Rob Landley64612912006-01-30 08:31:37 +0000[diff] [blame]13int halt_main(int argc, char *argv[])
Eric Andersencc8ed391999-10-05 16:24:54 +0000[diff] [blame]14{
Bernhard Reutner-Fischerd765ee52006-05-26 20:34:02 +0000[diff] [blame]15 static const int magic[] = {
16#ifdef RB_HALT_SYSTEM
17RB_HALT_SYSTEM,
18#elif defined RB_HALT
19RB_HALT,
20#endif
21#ifdef RB_POWER_OFF
22RB_POWER_OFF,
23#elif defined RB_POWERDOWN
24RB_POWERDOWN,
25#endif
26RB_AUTOBOOT
27 };
Denis Vlasenko35fb5122006-11-01 09:16:49 +0000[diff] [blame]28 static const int signals[] = { SIGUSR1, SIGUSR2, SIGTERM };
Rob Landley0a7c8ef2006-02-22 17:01:00 +0000[diff] [blame]29
Denis Vlasenko35fb5122006-11-01 09:16:49 +0000[diff] [blame]30 char *delay;
Rob Landley0a7c8ef2006-02-22 17:01:00 +0000[diff] [blame]31 int which, flags, rc = 1;
Eric Andersen02462222003-07-22 09:41:39 +0000[diff] [blame]32
Rob Landley64612912006-01-30 08:31:37 +0000[diff] [blame]33 /* Figure out which applet we're running */
Denis Vlasenko35fb5122006-11-01 09:16:49 +0000[diff] [blame]34 for (which = 0; "hpr"[which] != *applet_name; which++);
Eric Andersen02462222003-07-22 09:41:39 +0000[diff] [blame]35
Rob Landley64612912006-01-30 08:31:37 +0000[diff] [blame]36 /* Parse and handle arguments */
Denis Vlasenko67b23e62006-10-03 21:00:06 +0000[diff] [blame]37 flags = getopt32(argc, argv, "d:nf", &delay);
Denis Vlasenko35fb5122006-11-01 09:16:49 +0000[diff] [blame]38 if (flags & 1) sleep(xatou(delay));
39 if (!(flags & 2)) sync();
Bernhard Reutner-Fischere15d7572006-06-02 20:56:16 +0000[diff] [blame]40
Rob Landley64612912006-01-30 08:31:37 +0000[diff] [blame]41 /* Perform action. */
42 if (ENABLE_INIT && !(flags & 4)) {
43 if (ENABLE_FEATURE_INITRD) {
Denis Vlasenko35fb5122006-11-01 09:16:49 +0000[diff] [blame]44 pid_t *pidlist = find_pid_by_name("linuxrc");
45 if (pidlist[0] > 0)
46 rc = kill(pidlist[0], signals[which]);
47 if (ENABLE_FEATURE_CLEAN_UP)
48 free(pidlist);
Rob Landley64612912006-01-30 08:31:37 +0000[diff] [blame]49 }
Denis Vlasenko35fb5122006-11-01 09:16:49 +0000[diff] [blame]50 if (rc)
51 rc = kill(1, signals[which]);
52 } else
53 rc = reboot(magic[which]);
Rob Landley64612912006-01-30 08:31:37 +0000[diff] [blame]54
Denis Vlasenko35fb5122006-11-01 09:16:49 +0000[diff] [blame]55 if (rc)
56 bb_error_msg("no");
Rob Landley64612912006-01-30 08:31:37 +0000[diff] [blame]57 return rc;
Eric Andersencc8ed391999-10-05 16:24:54 +0000[diff] [blame]58}