[unix-history] / usr / src / sbin / reboot / reboot.c

#ifndef lint
static	char *sccsid = "@(#)reboot.c	4.8 (Berkeley) %G%";
#endif

/*
 * Reboot
 */
#include <stdio.h>
#include <sys/reboot.h>
#include <errno.h>
#include <signal.h>
#include <sys/types.h>
#include <sys/time.h>

#define SHUTDOWNLOG "/usr/adm/shutdownlog"

main(argc, argv)
	int argc;
	char **argv;
{
	int howto;
	register char *argp;
	register i;
	register ok = 0;
	register qflag = 0;

	argc--, argv++;
	howto = 0;
	while (argc > 0) {
		if (!strcmp(*argv, "-q"))
			qflag++;
		else if (!strcmp(*argv, "-n"))
			howto |= RB_NOSYNC;
		else {
			fprintf(stderr,
			    "usage: reboot [ -n ][ -q ]\n");
			exit(1);
		}
		argc--, argv++;
	}

	signal(SIGHUP, SIG_IGN);	/* for remote connections */
	if (kill(1, SIGTSTP) == -1) {
		fprintf(stderr, "reboot: can't idle init\n");
		exit(1);
	}

	if (!qflag) for (i = 1; ; i++) {
		if (kill(-1, SIGKILL) == -1) {
			extern int errno;

			if (errno == ESRCH)
				break;

			perror("reboot: kill");
			kill(1, SIGHUP);
			exit(1);
		}
		if (i > 5) {
	fprintf(stderr, "CAUTION: some process(es) wouldn't die\n");
			break;
		}
		setalarm(2 * i);
		pause();
	}

	if ((howto & RB_NOSYNC) == 0)
		log_entry();
	if (!qflag) {
		if (!(howto & RB_NOSYNC)) {
			markdown();
			sync();
			sync();
		}
		setalarm(5);
		pause();
	}
	syscall(55, howto);
	perror("reboot");
	kill(1, SIGHUP);
	exit(1);
}

dingdong()
{
	/* RRRIIINNNGGG RRRIIINNNGGG */
}

setalarm(n)
{
	signal(SIGALRM, dingdong);
	alarm(n);
}

#include <utmp.h>
#define SCPYN(a, b)	strncpy(a, b, sizeof(a))
char	wtmpf[]	= "/usr/adm/wtmp";
struct utmp wtmp;

markdown()
{
	register f = open(wtmpf, 1);
	if (f >= 0) {
		lseek(f, 0L, 2);
		SCPYN(wtmp.ut_line, "~");
		SCPYN(wtmp.ut_name, "shutdown");
		SCPYN(wtmp.ut_host, "");
		time(&wtmp.ut_time);
		write(f, (char *)&wtmp, sizeof(wtmp));
		close(f);
	}
}

char *days[] = {
	"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
};

char *months[] = {
	"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep",
	"Oct", "Nov", "Dec"
};

log_entry()
{
	FILE *fp;
	struct tm *tm, *localtime();
	time_t now;

	time(&now);
	tm = localtime(&now);
	fp = fopen(SHUTDOWNLOG, "a");
	if (fp == 0)
		return;
	fseek(fp, 0L, 2);
	fprintf(fp, "%02d:%02d  %s %s %2d, %4d.  Halted for reboot.\n", tm->tm_hour,
		tm->tm_min, days[tm->tm_wday], months[tm->tm_mon],
		tm->tm_mday, tm->tm_year + 1900);
	fclose(fp);
}
Commit	Line	Data
37c640e2	1	#ifndef lint
ce4fd43b	2	static char *sccsid = "@(#)reboot.c 4.8 (Berkeley) %G%";
37c640e2 SL	3	#endif
37c640e2 SL	4
cf5fda66 BJ	5	/*
	6	* Reboot
	7	*/
fe6cb666 BJ	8	#include <stdio.h>
	9	#include <sys/reboot.h>
	10	#include <errno.h>
	11	#include <signal.h>
3111ba40	12	#include <sys/types.h>
ce4fd43b	13	#include <sys/time.h>
3111ba40 BJ	14
3111ba40 BJ	15	#define SHUTDOWNLOG "/usr/adm/shutdownlog"
cf5fda66 BJ	16
	17	main(argc, argv)
	18	int argc;
	19	char **argv;
	20	{
	21	int howto;
	22	register char *argp;
fe6cb666 BJ	23	register i;
	24	register ok = 0;
	25	register qflag = 0;
cf5fda66 BJ	26
	27	argc--, argv++;
	28	howto = 0;
	29	while (argc > 0) {
fe6cb666 BJ	30	if (!strcmp(*argv, "-q"))
fe6cb666 BJ	31	qflag++;
cf5fda66 BJ	32	else if (!strcmp(*argv, "-n"))
cf5fda66 BJ	33	howto \|= RB_NOSYNC;
cf5fda66 BJ	34	else {
cf5fda66 BJ	35	fprintf(stderr,
fe6cb666	36	"usage: reboot [ -n ][ -q ]\n");
cf5fda66 BJ	37	exit(1);
	38	}
	39	argc--, argv++;
	40	}
fe6cb666	41
7c280ab6	42	signal(SIGHUP, SIG_IGN); /* for remote connections */
fe6cb666 BJ	43	if (kill(1, SIGTSTP) == -1) {
	44	fprintf(stderr, "reboot: can't idle init\n");
	45	exit(1);
	46	}
	47
	48	if (!qflag) for (i = 1; ; i++) {
	49	if (kill(-1, SIGKILL) == -1) {
	50	extern int errno;
	51
	52	if (errno == ESRCH)
	53	break;
	54
	55	perror("reboot: kill");
	56	kill(1, SIGHUP);
	57	exit(1);
	58	}
	59	if (i > 5) {
	60	fprintf(stderr, "CAUTION: some process(es) wouldn't die\n");
	61	break;
	62	}
	63	setalarm(2 * i);
	64	pause();
	65	}
	66
e8d9b3bd BJ	67	if ((howto & RB_NOSYNC) == 0)
e8d9b3bd BJ	68	log_entry();
fe6cb666 BJ	69	if (!qflag) {
	70	if (!(howto & RB_NOSYNC)) {
	71	markdown();
	72	sync();
	73	sync();
	74	}
	75	setalarm(5);
	76	pause();
	77	}
cf5fda66 BJ	78	syscall(55, howto);
cf5fda66 BJ	79	perror("reboot");
fe6cb666 BJ	80	kill(1, SIGHUP);
	81	exit(1);
	82	}
	83
	84	dingdong()
	85	{
	86	/* RRRIIINNNGGG RRRIIINNNGGG */
	87	}
	88
	89	setalarm(n)
	90	{
	91	signal(SIGALRM, dingdong);
	92	alarm(n);
	93	}
	94
	95	#include <utmp.h>
	96	#define SCPYN(a, b) strncpy(a, b, sizeof(a))
	97	char wtmpf[] = "/usr/adm/wtmp";
	98	struct utmp wtmp;
	99
	100	markdown()
	101	{
	102	register f = open(wtmpf, 1);
	103	if (f >= 0) {
	104	lseek(f, 0L, 2);
	105	SCPYN(wtmp.ut_line, "~");
	106	SCPYN(wtmp.ut_name, "shutdown");
37c640e2	107	SCPYN(wtmp.ut_host, "");
fe6cb666 BJ	108	time(&wtmp.ut_time);
	109	write(f, (char *)&wtmp, sizeof(wtmp));
	110	close(f);
	111	}
cf5fda66	112	}
3111ba40 BJ	113
	114	char *days[] = {
	115	"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
	116	};
	117
	118	char *months[] = {
	119	"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep",
	120	"Oct", "Nov", "Dec"
	121	};
	122
	123	log_entry()
	124	{
	125	FILE *fp;
	126	struct tm tm, localtime();
	127	time_t now;
	128
	129	time(&now);
	130	tm = localtime(&now);
	131	fp = fopen(SHUTDOWNLOG, "a");
e1fc0b0e BJ	132	if (fp == 0)
e1fc0b0e BJ	133	return;
3111ba40 BJ	134	fseek(fp, 0L, 2);
	135	fprintf(fp, "%02d:%02d %s %s %2d, %4d. Halted for reboot.\n", tm->tm_hour,
	136	tm->tm_min, days[tm->tm_wday], months[tm->tm_mon],
	137	tm->tm_mday, tm->tm_year + 1900);
	138	fclose(fp);
	139	}