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119 lines
2.8 KiB
C
119 lines
2.8 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* Mini reboot implementation for busybox
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*
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* Copyright (C) 1995, 1996 by Bruce Perens <bruce@pixar.com>.
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* Copyright (C) 1999-2002 by Erik Andersen <andersee@debian.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include <signal.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <getopt.h>
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#include "busybox.h"
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#if (__GNU_LIBRARY__ > 5) || defined(__dietlibc__)
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#include <sys/reboot.h>
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#define init_reboot(magic) reboot(magic)
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#else
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#define init_reboot(magic) reboot(0xfee1dead, 672274793, magic)
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#endif
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#ifndef RB_ENABLE_CAD
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static const int RB_ENABLE_CAD = 0x89abcdef;
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static const int RB_AUTOBOOT = 0x01234567;
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#endif
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extern int reboot_main(int argc, char **argv)
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{
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int delay = 0; /* delay in seconds before rebooting */
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int rc;
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while ((rc = getopt(argc, argv, "d:")) > 0) {
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switch (rc) {
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case 'd':
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delay = atoi(optarg);
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break;
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default:
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bb_show_usage();
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break;
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}
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}
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if(delay > 0)
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sleep(delay);
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#ifdef CONFIG_USER_INIT
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/* Don't kill ourself */
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signal(SIGTERM,SIG_IGN);
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signal(SIGHUP,SIG_IGN);
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setpgrp();
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/* Allow Ctrl-Alt-Del to reboot system. */
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init_reboot(RB_ENABLE_CAD);
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message(CONSOLE|LOG, "\n\rThe system is going down NOW !!\n");
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sync();
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/* Send signals to every process _except_ pid 1 */
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message(CONSOLE|LOG, "\rSending SIGTERM to all processes.\n");
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kill(-1, SIGTERM);
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sleep(1);
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sync();
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message(CONSOLE|LOG, "\rSending SIGKILL to all processes.\n");
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kill(-1, SIGKILL);
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sleep(1);
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sync();
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if (kernelVersion > 0 && kernelVersion <= KERNEL_VERSION(2,2,11)) {
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/* bdflush, kupdate not needed for kernels >2.2.11 */
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bdflush(1, 0);
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sync();
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}
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init_reboot(RB_AUTOBOOT);
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exit(0); /* Shrug */
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#else
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#ifdef CONFIG_FEATURE_INITRD
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{
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/* don't assume init's pid == 1 */
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long *pid = find_pid_by_name("init");
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if (!pid || *pid<=0)
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pid = find_pid_by_name("linuxrc");
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if (!pid || *pid<=0)
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bb_error_msg_and_die("no process killed");
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fflush(stdout);
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return(kill(*pid, SIGTERM));
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}
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#else
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return(kill(1, SIGTERM));
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#endif
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#endif
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}
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/*
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Local Variables:
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c-file-style: "linux"
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c-basic-offset: 4
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tab-width: 4
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End:
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*/
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