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

static	char *sccsid = "@(#)reboot.c	4.6 (Berkeley) %G%";
/*
 * Reboot
 */
#include <stdio.h>
#include <sys/reboot.h>
#include <errno.h>
#include <signal.h>
#include <sys/types.h>
#include <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");
		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
7c280ab6	1	static char *sccsid = "@(#)reboot.c 4.6 (Berkeley) %G%";
cf5fda66 BJ	2	/*
	3	* Reboot
	4	*/
fe6cb666 BJ	5	#include <stdio.h>
	6	#include <sys/reboot.h>
	7	#include <errno.h>
	8	#include <signal.h>
3111ba40 BJ	9	#include <sys/types.h>
	10	#include <time.h>
	11
	12	#define SHUTDOWNLOG "/usr/adm/shutdownlog"
cf5fda66 BJ	13
	14	main(argc, argv)
	15	int argc;
	16	char **argv;
	17	{
	18	int howto;
	19	register char *argp;
fe6cb666 BJ	20	register i;
	21	register ok = 0;
	22	register qflag = 0;
cf5fda66 BJ	23
	24	argc--, argv++;
	25	howto = 0;
	26	while (argc > 0) {
fe6cb666 BJ	27	if (!strcmp(*argv, "-q"))
fe6cb666 BJ	28	qflag++;
cf5fda66 BJ	29	else if (!strcmp(*argv, "-n"))
cf5fda66 BJ	30	howto \|= RB_NOSYNC;
cf5fda66 BJ	31	else {
cf5fda66 BJ	32	fprintf(stderr,
fe6cb666	33	"usage: reboot [ -n ][ -q ]\n");
cf5fda66 BJ	34	exit(1);
	35	}
	36	argc--, argv++;
	37	}
fe6cb666	38
7c280ab6	39	signal(SIGHUP, SIG_IGN); /* for remote connections */
fe6cb666 BJ	40	if (kill(1, SIGTSTP) == -1) {
	41	fprintf(stderr, "reboot: can't idle init\n");
	42	exit(1);
	43	}
	44
	45	if (!qflag) for (i = 1; ; i++) {
	46	if (kill(-1, SIGKILL) == -1) {
	47	extern int errno;
	48
	49	if (errno == ESRCH)
	50	break;
	51
	52	perror("reboot: kill");
	53	kill(1, SIGHUP);
	54	exit(1);
	55	}
	56	if (i > 5) {
	57	fprintf(stderr, "CAUTION: some process(es) wouldn't die\n");
	58	break;
	59	}
	60	setalarm(2 * i);
	61	pause();
	62	}
	63
e8d9b3bd BJ	64	if ((howto & RB_NOSYNC) == 0)
e8d9b3bd BJ	65	log_entry();
fe6cb666 BJ	66	if (!qflag) {
	67	if (!(howto & RB_NOSYNC)) {
	68	markdown();
	69	sync();
	70	sync();
	71	}
	72	setalarm(5);
	73	pause();
	74	}
cf5fda66 BJ	75	syscall(55, howto);
cf5fda66 BJ	76	perror("reboot");
fe6cb666 BJ	77	kill(1, SIGHUP);
	78	exit(1);
	79	}
	80
	81	dingdong()
	82	{
	83	/* RRRIIINNNGGG RRRIIINNNGGG */
	84	}
	85
	86	setalarm(n)
	87	{
	88	signal(SIGALRM, dingdong);
	89	alarm(n);
	90	}
	91
	92	#include <utmp.h>
	93	#define SCPYN(a, b) strncpy(a, b, sizeof(a))
	94	char wtmpf[] = "/usr/adm/wtmp";
	95	struct utmp wtmp;
	96
	97	markdown()
	98	{
	99	register f = open(wtmpf, 1);
	100	if (f >= 0) {
	101	lseek(f, 0L, 2);
	102	SCPYN(wtmp.ut_line, "~");
	103	SCPYN(wtmp.ut_name, "shutdown");
	104	time(&wtmp.ut_time);
	105	write(f, (char *)&wtmp, sizeof(wtmp));
	106	close(f);
	107	}
cf5fda66	108	}
3111ba40 BJ	109
	110	char *days[] = {
	111	"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
	112	};
	113
	114	char *months[] = {
	115	"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep",
	116	"Oct", "Nov", "Dec"
	117	};
	118
	119	log_entry()
	120	{
	121	FILE *fp;
	122	struct tm tm, localtime();
	123	time_t now;
	124
	125	time(&now);
	126	tm = localtime(&now);
	127	fp = fopen(SHUTDOWNLOG, "a");
e1fc0b0e BJ	128	if (fp == 0)
e1fc0b0e BJ	129	return;
3111ba40 BJ	130	fseek(fp, 0L, 2);
	131	fprintf(fp, "%02d:%02d %s %s %2d, %4d. Halted for reboot.\n", tm->tm_hour,
	132	tm->tm_min, days[tm->tm_wday], months[tm->tm_mon],
	133	tm->tm_mday, tm->tm_year + 1900);
	134	fclose(fp);
	135	}