BSD 4.4 Lite sbin Sources

Note:  XNSrouted and routed NOT imported here, they shall be imported with
usr.sbin.

1 files changed, 492 insertions, 0 deletions

diff --git a/sbin/shutdown/shutdown.c b/sbin/shutdown/shutdown.c
new file mode 100644
index 000000000000..c63ba659c66a
--- /dev/null
+++ b/sbin/shutdown/shutdown.c
@@ -0,0 +1,492 @@
+/*
+ * Copyright (c) 1988, 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char copyright[] =
+"@(#) Copyright (c) 1988, 1990, 1993\n\
+	The Regents of the University of California.  All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)shutdown.c	8.2 (Berkeley) 2/16/94";
+#endif /* not lint */
+
+#include <sys/param.h>
+#include <sys/time.h>
+#include <sys/resource.h>
+#include <sys/syslog.h>
+
+#include <ctype.h>
+#include <fcntl.h>
+#include <pwd.h>
+#include <setjmp.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <tzfile.h>
+#include <unistd.h>
+
+#include "pathnames.h"
+
+#ifdef DEBUG
+#undef _PATH_NOLOGIN
+#define	_PATH_NOLOGIN	"./nologin"
+#undef _PATH_FASTBOOT
+#define	_PATH_FASTBOOT	"./fastboot"
+#endif
+
+#define	H		*60*60
+#define	M		*60
+#define	S		*1
+#define	NOLOG_TIME	5*60
+struct interval {
+	int timeleft, timetowait;
+} tlist[] = {
+	10 H,  5 H,	 5 H,  3 H,	 2 H,  1 H,	1 H, 30 M,
+	30 M, 10 M,	20 M, 10 M,	10 M,  5 M,	5 M,  3 M,
+	 2 M,  1 M,	 1 M, 30 S,	30 S, 30 S,
+	 0, 0,
+};
+#undef H
+#undef M
+#undef S
+
+static time_t offset, shuttime;
+static int dofast, dohalt, doreboot, killflg, mbuflen;
+static char *nosync, *whom, mbuf[BUFSIZ];
+
+void badtime __P((void));
+void die_you_gravy_sucking_pig_dog __P((void));
+void doitfast __P((void));
+void finish __P((int));
+void getoffset __P((char *));
+void loop __P((void));
+void nolog __P((void));
+void timeout __P((int));
+void timewarn __P((int));
+void usage __P((void));
+
+int
+main(argc, argv)
+	int argc;
+	char *argv[];
+{
+	extern int optind;
+	register char *p, *endp;
+	struct passwd *pw;
+	int arglen, ch, len, readstdin;
+
+#ifndef DEBUG
+	if (geteuid()) {
+		(void)fprintf(stderr, "shutdown: NOT super-user\n");
+		exit(1);
+	}
+#endif
+	nosync = NULL;
+	readstdin = 0;
+	while ((ch = getopt(argc, argv, "-fhknr")) != EOF)
+		switch (ch) {
+		case '-':
+			readstdin = 1;
+			break;
+		case 'f':
+			dofast = 1;
+			break;
+		case 'h':
+			dohalt = 1;
+			break;
+		case 'k':
+			killflg = 1;
+			break;
+		case 'n':
+			nosync = "-n";
+			break;
+		case 'r':
+			doreboot = 1;
+			break;
+		case '?':
+		default:
+			usage();
+		}
+	argc -= optind;
+	argv += optind;
+
+	if (argc < 1)
+		usage();
+
+	if (dofast && nosync) {
+		(void)fprintf(stderr,
+		    "shutdown: incompatible switches -f and -n.\n");
+		usage();
+	}
+	if (doreboot && dohalt) {
+		(void)fprintf(stderr,
+		    "shutdown: incompatible switches -h and -r.\n");
+		usage();
+	}
+	getoffset(*argv++);
+
+	if (*argv) {
+		for (p = mbuf, len = sizeof(mbuf); *argv; ++argv) {
+			arglen = strlen(*argv);
+			if ((len -= arglen) <= 2)
+				break;
+			if (p != mbuf)
+				*p++ = ' ';
+			bcopy(*argv, p, arglen);
+			p += arglen;
+		}
+		*p = '\n';
+		*++p = '\0';
+	}
+
+	if (readstdin) {
+		p = mbuf;
+		endp = mbuf + sizeof(mbuf) - 2;
+		for (;;) {
+			if (!fgets(p, endp - p + 1, stdin))
+				break;
+			for (; *p &&  p < endp; ++p);
+			if (p == endp) {
+				*p = '\n';
+				*++p = '\0';
+				break;
+			}
+		}
+	}
+	mbuflen = strlen(mbuf);
+
+	if (offset)
+		(void)printf("Shutdown at %.24s.\n", ctime(&shuttime));
+	else
+		(void)printf("Shutdown NOW!\n");
+
+	if (!(whom = getlogin()))
+		whom = (pw = getpwuid(getuid())) ? pw->pw_name : "???";
+
+#ifdef DEBUG
+	(void)putc('\n', stdout);
+#else
+	(void)setpriority(PRIO_PROCESS, 0, PRIO_MIN);
+	{
+		int forkpid;
+
+		forkpid = fork();
+		if (forkpid == -1) {
+			perror("shutdown: fork");
+			exit(1);
+		}
+		if (forkpid) {
+			(void)printf("shutdown: [pid %d]\n", forkpid);
+			exit(0);
+		}
+	}
+#endif
+	openlog("shutdown", LOG_CONS, LOG_AUTH);
+	loop();
+	/* NOTREACHED */
+}
+
+void
+loop()
+{
+	struct interval *tp;
+	u_int sltime;
+	int logged;
+
+	if (offset <= NOLOG_TIME) {
+		logged = 1;
+		nolog();
+	}
+	else
+		logged = 0;
+	tp = tlist;
+	if (tp->timeleft < offset)
+		(void)sleep((u_int)(offset - tp->timeleft));
+	else {
+		while (offset < tp->timeleft)
+			++tp;
+		/*
+		 * Warn now, if going to sleep more than a fifth of
+		 * the next wait time.
+		 */
+		if (sltime = offset - tp->timeleft) {
+			if (sltime > tp->timetowait / 5)
+				timewarn(offset);
+			(void)sleep(sltime);
+		}
+	}
+	for (;; ++tp) {
+		timewarn(tp->timeleft);
+		if (!logged && tp->timeleft <= NOLOG_TIME) {
+			logged = 1;
+			nolog();
+		}
+		(void)sleep((u_int)tp->timetowait);
+		if (!tp->timeleft)
+			break;
+	}
+	die_you_gravy_sucking_pig_dog();
+}
+
+static jmp_buf alarmbuf;
+
+void
+timewarn(timeleft)
+	int timeleft;
+{
+	static int first;
+	static char hostname[MAXHOSTNAMELEN + 1];
+	FILE *pf;
+	char wcmd[MAXPATHLEN + 4];
+
+	if (!first++)
+		(void)gethostname(hostname, sizeof(hostname));
+
+	/* undoc -n option to wall suppresses normal wall banner */
+	(void)snprintf(wcmd, sizeof(wcmd), "%s -n", _PATH_WALL);
+	if (!(pf = popen(wcmd, "w"))) {
+		syslog(LOG_ERR, "shutdown: can't find %s: %m", _PATH_WALL);
+		return;
+	}
+
+	(void)fprintf(pf,
+	    "\007*** %sSystem shutdown message from %s@%s ***\007\n",
+	    timeleft ? "": "FINAL ", whom, hostname);
+
+	if (timeleft > 10*60)
+		(void)fprintf(pf, "System going down at %5.5s\n\n",
+		    ctime(&shuttime) + 11);
+	else if (timeleft > 59)
+		(void)fprintf(pf, "System going down in %d minute%s\n\n",
+		    timeleft / 60, (timeleft > 60) ? "s" : "");
+	else if (timeleft)
+		(void)fprintf(pf, "System going down in 30 seconds\n\n");
+	else
+		(void)fprintf(pf, "System going down IMMEDIATELY\n\n");
+
+	if (mbuflen)
+		(void)fwrite(mbuf, sizeof(*mbuf), mbuflen, pf);
+
+	/*
+	 * play some games, just in case wall doesn't come back
+	 * probably unecessary, given that wall is careful.
+	 */
+	if (!setjmp(alarmbuf)) {
+		(void)signal(SIGALRM, timeout);
+		(void)alarm((u_int)30);
+		(void)pclose(pf);
+		(void)alarm((u_int)0);
+		(void)signal(SIGALRM, SIG_DFL);
+	}
+}
+
+void
+timeout(signo)
+	int signo;
+{
+	longjmp(alarmbuf, 1);
+}
+
+void
+die_you_gravy_sucking_pig_dog()
+{
+
+	syslog(LOG_NOTICE, "%s by %s: %s",
+	    doreboot ? "reboot" : dohalt ? "halt" : "shutdown", whom, mbuf);
+	(void)sleep(2);
+
+	(void)printf("\r\nSystem shutdown time has arrived\007\007\r\n");
+	if (killflg) {
+		(void)printf("\rbut you'll have to do it yourself\r\n");
+		finish(0);
+	}
+	if (dofast)
+		doitfast();
+#ifdef DEBUG
+	if (doreboot)
+		(void)printf("reboot");
+	else if (dohalt)
+		(void)printf("halt");
+	if (nosync)
+		(void)printf(" no sync");
+	if (dofast)
+		(void)printf(" no fsck");
+	(void)printf("\nkill -HUP 1\n");
+#else
+	if (doreboot) {
+		execle(_PATH_REBOOT, "reboot", "-l", nosync, 0);
+		syslog(LOG_ERR, "shutdown: can't exec %s: %m.", _PATH_REBOOT);
+		perror("shutdown");
+	}
+	else if (dohalt) {
+		execle(_PATH_HALT, "halt", "-l", nosync, 0);
+		syslog(LOG_ERR, "shutdown: can't exec %s: %m.", _PATH_HALT);
+		perror("shutdown");
+	}
+	(void)kill(1, SIGTERM);		/* to single user */
+#endif
+	finish(0);
+}
+
+#define	ATOI2(p)	(p[0] - '0') * 10 + (p[1] - '0'); p += 2;
+
+void
+getoffset(timearg)
+	register char *timearg;
+{
+	register struct tm *lt;
+	register char *p;
+	time_t now;
+
+	if (!strcasecmp(timearg, "now")) {		/* now */
+		offset = 0;
+		return;
+	}
+
+	(void)time(&now);
+	if (*timearg == '+') {				/* +minutes */
+		if (!isdigit(*++timearg))
+			badtime();
+		offset = atoi(timearg) * 60;
+		shuttime = now + offset;
+		return;
+	}
+
+	/* handle hh:mm by getting rid of the colon */
+	for (p = timearg; *p; ++p)
+		if (!isascii(*p) || !isdigit(*p))
+			if (*p == ':' && strlen(p) == 3) {
+				p[0] = p[1];
+				p[1] = p[2];
+				p[2] = '\0';
+			}
+			else
+				badtime();
+
+	unsetenv("TZ");					/* OUR timezone */
+	lt = localtime(&now);				/* current time val */
+
+	switch(strlen(timearg)) {
+	case 10:
+		lt->tm_year = ATOI2(timearg);
+		/* FALLTHROUGH */
+	case 8:
+		lt->tm_mon = ATOI2(timearg);
+		if (--lt->tm_mon < 0 || lt->tm_mon > 11)
+			badtime();
+		/* FALLTHROUGH */
+	case 6:
+		lt->tm_mday = ATOI2(timearg);
+		if (lt->tm_mday < 1 || lt->tm_mday > 31)
+			badtime();
+		/* FALLTHROUGH */
+	case 4:
+		lt->tm_hour = ATOI2(timearg);
+		if (lt->tm_hour < 0 || lt->tm_hour > 23)
+			badtime();
+		lt->tm_min = ATOI2(timearg);
+		if (lt->tm_min < 0 || lt->tm_min > 59)
+			badtime();
+		lt->tm_sec = 0;
+		if ((shuttime = mktime(lt)) == -1)
+			badtime();
+		if ((offset = shuttime - now) < 0) {
+			(void)fprintf(stderr,
+			    "shutdown: that time is already past.\n");
+			exit(1);
+		}
+		break;
+	default:
+		badtime();
+	}
+}
+
+#define	FSMSG	"fastboot file for fsck\n"
+void
+doitfast()
+{
+	int fastfd;
+
+	if ((fastfd = open(_PATH_FASTBOOT, O_WRONLY|O_CREAT|O_TRUNC,
+	    0664)) >= 0) {
+		(void)write(fastfd, FSMSG, sizeof(FSMSG) - 1);
+		(void)close(fastfd);
+	}
+}
+
+#define	NOMSG	"\n\nNO LOGINS: System going down at "
+void
+nolog()
+{
+	int logfd;
+	char *ct;
+
+	(void)unlink(_PATH_NOLOGIN);	/* in case linked to another file */
+	(void)signal(SIGINT, finish);
+	(void)signal(SIGHUP, finish);
+	(void)signal(SIGQUIT, finish);
+	(void)signal(SIGTERM, finish);
+	if ((logfd = open(_PATH_NOLOGIN, O_WRONLY|O_CREAT|O_TRUNC,
+	    0664)) >= 0) {
+		(void)write(logfd, NOMSG, sizeof(NOMSG) - 1);
+		ct = ctime(&shuttime);
+		(void)write(logfd, ct + 11, 5);
+		(void)write(logfd, "\n\n", 2);
+		(void)write(logfd, mbuf, strlen(mbuf));
+		(void)close(logfd);
+	}
+}
+
+void
+finish(signo)
+	int signo;
+{
+	(void)unlink(_PATH_NOLOGIN);
+	exit(0);
+}
+
+void
+badtime()
+{
+	(void)fprintf(stderr, "shutdown: bad time format.\n");
+	exit(1);
+}
+
+void
+usage()
+{
+	fprintf(stderr, "usage: shutdown [-fhknr] shutdowntime [ message ]\n");
+	exit(1);
+}