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gerrit.nordix.org / codeaurora / busybox / 681023650e69f6e4fa959c5c6f0480d4a0edf906 / . / init / halt.c
blob: d9f8b1afc553725bbdc3e6cc9e216578f8545bb1 [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
Denis Vlasenkob6adbf12007-05-26 19:00:18 +0000[diff] [blame]10#include "libbb.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
Denis Vlasenko9b49a5e2007-10-11 10:05:36 +0000[diff] [blame]13int halt_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
Bernhard Reutner-Fischerfebe3c42007-04-04 20:52:03 +0000[diff] [blame]14int halt_main(int argc, char **argv)
Eric Andersencc8ed391999-10-05 16:24:54 +0000[diff] [blame]15{
Bernhard Reutner-Fischerd765ee52006-05-26 20:34:02 +0000[diff] [blame]16 static const int magic[] = {
17#ifdef RB_HALT_SYSTEM
18RB_HALT_SYSTEM,
19#elif defined RB_HALT
20RB_HALT,
21#endif
22#ifdef RB_POWER_OFF
23RB_POWER_OFF,
24#elif defined RB_POWERDOWN
25RB_POWERDOWN,
26#endif
27RB_AUTOBOOT
28 };
Denis Vlasenko35fb5122006-11-01 09:16:49 +0000[diff] [blame]29 static const int signals[] = { SIGUSR1, SIGUSR2, SIGTERM };
Rob Landley0a7c8ef2006-02-22 17:01:00 +0000[diff] [blame]30
Denis Vlasenko35fb5122006-11-01 09:16:49 +0000[diff] [blame]31 char *delay;
Rob Landley0a7c8ef2006-02-22 17:01:00 +0000[diff] [blame]32 int which, flags, rc = 1;
Eric Andersen02462222003-07-22 09:41:39 +0000[diff] [blame]33
Rob Landley64612912006-01-30 08:31:37 +0000[diff] [blame]34 /* Figure out which applet we're running */
Denis Vlasenko35fb5122006-11-01 09:16:49 +0000[diff] [blame]35 for (which = 0; "hpr"[which] != *applet_name; which++);
Eric Andersen02462222003-07-22 09:41:39 +0000[diff] [blame]36
Rob Landley64612912006-01-30 08:31:37 +0000[diff] [blame]37 /* Parse and handle arguments */
Denis Vlasenkofe7cd642007-08-18 15:32:12 +0000[diff] [blame]38 flags = getopt32(argv, "d:nf", &delay);
Denis Vlasenko35fb5122006-11-01 09:16:49 +0000[diff] [blame]39 if (flags & 1) sleep(xatou(delay));
40 if (!(flags & 2)) sync();
Bernhard Reutner-Fischere15d7572006-06-02 20:56:16 +0000[diff] [blame]41
Rob Landley64612912006-01-30 08:31:37 +0000[diff] [blame]42 /* Perform action. */
43 if (ENABLE_INIT && !(flags & 4)) {
44 if (ENABLE_FEATURE_INITRD) {
Denis Vlasenko35fb5122006-11-01 09:16:49 +0000[diff] [blame]45 pid_t *pidlist = find_pid_by_name("linuxrc");
46 if (pidlist[0] > 0)
47 rc = kill(pidlist[0], signals[which]);
48 if (ENABLE_FEATURE_CLEAN_UP)
49 free(pidlist);
Rob Landley64612912006-01-30 08:31:37 +0000[diff] [blame]50 }
Denis Vlasenko35fb5122006-11-01 09:16:49 +0000[diff] [blame]51 if (rc)
52 rc = kill(1, signals[which]);
53 } else
54 rc = reboot(magic[which]);
Rob Landley64612912006-01-30 08:31:37 +0000[diff] [blame]55
Denis Vlasenko35fb5122006-11-01 09:16:49 +0000[diff] [blame]56 if (rc)
57 bb_error_msg("no");
Rob Landley64612912006-01-30 08:31:37 +0000[diff] [blame]58 return rc;
Eric Andersencc8ed391999-10-05 16:24:54 +0000[diff] [blame]59}