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Commit	Line	Data
	1	/*
	2	* Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
	3	*
	4	* @APPLE_LICENSE_HEADER_START@
	5	*
	6	* "Portions Copyright (c) 1999 Apple Computer, Inc. All Rights
	7	* Reserved. This file contains Original Code and/or Modifications of
	8	* Original Code as defined in and that are subject to the Apple Public
	9	* Source License Version 1.0 (the 'License'). You may not use this file
	10	* except in compliance with the License. Please obtain a copy of the
	11	* License at http://www.apple.com/publicsource and read it before using
	12	* this file.
	13	*
	14	* The Original Code and all software distributed under the License are
	15	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
	16	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	17	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
	18	* FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
	19	* License for the specific language governing rights and limitations
	20	* under the License."
	21	*
	22	* @APPLE_LICENSE_HEADER_END@
	23	*/
	24	/*
	25	* Copyright (c) 1980, 1986 The Regents of the University of California.
	26	* All rights reserved.
	27	*
	28	* Redistribution and use in source and binary forms, with or without
	29	* modification, are permitted provided that the following conditions
	30	* are met:
	31	* 1. Redistributions of source code must retain the above copyright
	32	* notice, this list of conditions and the following disclaimer.
	33	* 2. Redistributions in binary form must reproduce the above copyright
	34	* notice, this list of conditions and the following disclaimer in the
	35	* documentation and/or other materials provided with the distribution.
	36	* 3. All advertising materials mentioning features or use of this software
	37	* must display the following acknowledgement:
	38	* This product includes software developed by the University of
	39	* California, Berkeley and its contributors.
	40	* 4. Neither the name of the University nor the names of its contributors
	41	* may be used to endorse or promote products derived from this software
	42	* without specific prior written permission.
	43	*
	44	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	45	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	46	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	47	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	48	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	49	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	50	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	51	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	52	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	53	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	54	* SUCH DAMAGE.
	55	*/
	56
	57	#ifndef lint
	58	char copyright[] =
	59	"@(#) Copyright (c) 1980, 1986 The Regents of the University of California.\n\
	60	All rights reserved.\n";
	61	#endif /* not lint */
	62
	63	#ifndef lint
	64	/static char sccsid[] = "from: @(#)halt.c 5.10 (Berkeley) 4/3/91";/
	65	static char rcsid[] = "$Id: halt.c,v 1.1.1.2 2000/01/11 02:10:15 wsanchez Exp $";
	66	#endif /* not lint */
	67
	68	/*
	69	* Halt
	70	*/
	71	#include <sys/types.h>
	72	#include <sys/reboot.h>
	73	#include <sys/time.h>
	74	#include <sys/syslog.h>
	75	#include <sys/signal.h>
	76	#include <errno.h>
	77	#include <pwd.h>
	78	#include <stdio.h>
	79	#include <paths.h>
	80
	81	main(argc, argv)
	82	int argc;
	83	char **argv;
	84	{
	85	register int i;
	86	register int qflag = 0;
	87	struct passwd *pw;
	88	int ch, howto, needlog = 1;
	89	char user, ttyn, getlogin(), ttyname();
	90
	91	howto = RB_HALT;
	92	ttyn = ttyname(2);
	93	while ((ch = getopt(argc, argv, "lnqy")) != EOF)
	94	switch((char)ch) {
	95	case 'l': /* undocumented; for shutdown(8) */
	96	needlog = 0;
	97	break;
	98	case 'n':
	99	howto \|= RB_NOSYNC;
	100	break;
	101	case 'q':
	102	qflag++;
	103	break;
	104	case 'y':
	105	ttyn = 0;
	106	break;
	107	case '?':
	108	default:
	109	fprintf(stderr, "usage: halt [-nqy]\n");
	110	exit(1);
	111	}
	112
	113	if (ttyn && ttyn[sizeof(_PATH_TTY) - 1] == 'd') {
	114	fprintf(stderr, "halt: dangerous on a dialup; use ``halt -y'' if you are really sure\n");
	115	exit(1);
	116	}
	117
	118	if (needlog) {
	119	openlog("halt", 0, LOG_AUTH);
	120	if ((user = getlogin()) == NULL)
	121	if ((pw = getpwuid(getuid())))
	122	user = pw->pw_name;
	123	else
	124	user = "???";
	125	syslog(LOG_CRIT, "halted by %s", user);
	126	}
	127
	128	signal(SIGHUP, SIG_IGN); /* for network connections */
	129	if (kill(1, SIGTSTP) == -1) {
	130	fprintf(stderr, "halt: can't idle init\n");
	131	exit(1);
	132	}
	133	#if 0
	134	sleep(1);
	135	(void) kill(-1, SIGTERM); /* one chance to catch it */
	136	sleep(5);
	137
	138	if (!qflag) for (i = 1; ; i++) {
	139	if (kill(-1, SIGKILL) == -1) {
	140	extern int errno;
	141
	142	if (errno == ESRCH)
	143	break;
	144
	145	perror("halt: kill");
	146	kill(1, SIGHUP);
	147	exit(1);
	148	}
	149	if (i > 5) {
	150	fprintf(stderr,
	151	"CAUTION: some process(es) wouldn't die\n");
	152	break;
	153	}
	154	setalarm(2 * i);
	155	pause();
	156	}
	157	if (!qflag && (howto & RB_NOSYNC) == 0) {
	158	logwtmp("~", "shutdown", "");
	159	sync();
	160	setalarm(5);
	161	pause();
	162	}
	163	#endif
	164	reboot(howto);
	165	perror("halt");
	166	}
	167
	168	void
	169	dingdong()
	170	{
	171	/* RRRIIINNNGGG RRRIIINNNGGG */
	172	}
	173
	174	setalarm(n)
	175	int n;
	176	{
	177	signal(SIGALRM, dingdong);
	178	alarm(n);
	179	}