this file should be dead.
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168
sbin/halt/halt.c
168
sbin/halt/halt.c
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/* $NetBSD: halt.c,v 1.8 1995/05/28 05:27:20 jtc Exp $ */
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/*
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* Copyright (c) 1980, 1986 The Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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char copyright[] =
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"@(#) Copyright (c) 1980, 1986 The Regents of the University of California.\n\
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All rights reserved.\n";
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#endif /* not lint */
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)halt.c 5.10 (Berkeley) 4/3/91";
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#else
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static char rcsid[] = "$NetBSD: halt.c,v 1.8 1995/05/28 05:27:20 jtc Exp $";
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#endif
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#endif /* not lint */
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/*
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* Halt
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*/
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#include <sys/types.h>
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#include <sys/reboot.h>
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#include <sys/time.h>
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#include <syslog.h>
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#include <sys/types.h>
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#include <errno.h>
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#include <pwd.h>
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#include <stdio.h>
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#include <paths.h>
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#include <signal.h>
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#include <unistd.h>
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void setalarm __P((int));
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int
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main(argc, argv)
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int argc;
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char **argv;
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{
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register int i;
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register int qflag = 0;
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struct passwd *pw;
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int ch, howto, needlog = 1;
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char *user, *ttyn, *getlogin(), *ttyname();
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howto = RB_HALT;
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ttyn = ttyname(2);
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while ((ch = getopt(argc, argv, "lnqy")) != EOF)
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switch((char)ch) {
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case 'l': /* undocumented; for shutdown(8) */
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needlog = 0;
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break;
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case 'n':
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howto |= RB_NOSYNC;
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break;
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case 'q':
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qflag++;
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break;
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case 'y':
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ttyn = 0;
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break;
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case '?':
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default:
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fprintf(stderr, "usage: halt [-nqy]\n");
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exit(1);
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}
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if (ttyn && ttyn[sizeof(_PATH_TTY) - 1] == 'd') {
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fprintf(stderr, "halt: dangerous on a dialup; use ``halt -y'' if you are really sure\n");
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exit(1);
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}
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if (needlog) {
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openlog("halt", 0, LOG_AUTH);
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if ((user = getlogin()) == NULL)
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if ((pw = getpwuid(getuid())))
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user = pw->pw_name;
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else
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user = "???";
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syslog(LOG_CRIT, "halted by %s", user);
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}
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signal(SIGHUP, SIG_IGN); /* for network connections */
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if (kill(1, SIGTSTP) == -1) {
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fprintf(stderr, "halt: can't idle init\n");
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exit(1);
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}
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sleep(1);
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(void) kill(-1, SIGTERM); /* one chance to catch it */
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sleep(5);
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if (!qflag) for (i = 1; ; i++) {
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if (kill(-1, SIGKILL) == -1) {
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extern int errno;
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if (errno == ESRCH)
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break;
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perror("halt: kill");
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kill(1, SIGHUP);
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exit(1);
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}
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if (i > 5) {
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fprintf(stderr,
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"CAUTION: some process(es) wouldn't die\n");
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break;
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}
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setalarm(2 * i);
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pause();
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}
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if (!qflag && (howto & RB_NOSYNC) == 0) {
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logwtmp("~", "shutdown", "");
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sync();
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setalarm(5);
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pause();
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}
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reboot(howto);
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perror("halt");
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exit(0);
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}
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void
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dingdong()
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{
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/* RRRIIINNNGGG RRRIIINNNGGG */
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}
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void
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setalarm(n)
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int n;
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{
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signal(SIGALRM, dingdong);
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alarm(n);
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}
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