1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
4  * Copyright (c) 2003-2004  Sean M. Kelly <smkelly@FreeBSD.org>
71 static int	watchdog_patpat(u_int timeout);
79 static u_int timeout = WD_TO_128SEC;  variable
91 static int fd = -1;
92 static int carp_thresh_seconds = -1;
108 	{ "pretimeout-action", required_argument, &pretimeout_act_set, 1 },
110 	{ "softtimeout-action", required_argument, &softtimeout_act_set, 1 },
135 	if (rtprio(RTP_SET, 0, &rtp) == -1)  in main()
138 	if (!is_dry_run && watchdog_init() == -1)  in main()
142 		if (watchdog_onoff(1) == -1)  in main()
155 		if (debugging == 0 && daemon(0, 0) == -1) {  in main()
178 			timeout |= WD_PASSIVE;  in main()
180 			timeout |= WD_ACTIVE;  in main()
181 		if (watchdog_patpat(timeout) < 0)  in main()
193 	ts->tv_sec = ns / 1000000000ULL;  in pow2ns_to_ts()
194 	ts->tv_nsec = ns % 1000000000ULL;  in pow2ns_to_ts()
198  * Convert a timeout in seconds to N where 2^N nanoseconds is close to
211 	char shortopt[] = "- ";  in parse_timeout_to_pow2ns()
226 		printf("Timeout for %s%s "  in parse_timeout_to_pow2ns()
228 		    "(in: %s sec -> out: %jd sec %ld ns -> %d ticks)\n",  in parse_timeout_to_pow2ns()
229 		    longopt ? "-" : "", longopt ? longopt : shortopt,  in parse_timeout_to_pow2ns()
234 …errx(1, "Timeout for %s%s is too small, please choose a higher timeout.", longopt ? "-" : "", long…  in parse_timeout_to_pow2ns()
265 	return (-1);  in watchdog_init()
290 	const char *cmd_prefix, *cmd;  in watchdog_check_dogfunction_time()  local
306 		cmd = test_cmd;  in watchdog_check_dogfunction_time()
309 		cmd = "stat(\"/etc\", &sb)";  in watchdog_check_dogfunction_time()
314 		    cmd_prefix, cmd, sec, (long)tv.tv_usec,  in watchdog_check_dogfunction_time()
319 		    cmd_prefix, cmd, sec, (long)tv.tv_usec,  in watchdog_check_dogfunction_time()
323 	 * Adjust the sleep interval again in case syslog(3) took a non-trivial  in watchdog_check_dogfunction_time()
367 			watchdog_patpat(timeout|WD_ACTIVE);  in watchdog_loop()
370 		if (nap - waited > 0)  in watchdog_loop()
371 			sleep(nap - waited);  in watchdog_loop()
423 		error = watchdog_patpat((timeout|WD_ACTIVE));  in watchdog_onoff()
455 		return watchdog_patpat((timeout|WD_ACTIVE));  in watchdog_onoff()
472 "  watchdogd [-dnSw] [-e cmd] [-I pidfile] [-s sleep] [-t timeout]\n"  in usage()
473 "            [-T script_timeout] [-x exit_timeout]\n"  in usage()
474 "            [--debug]\n"  in usage()
475 "            [--pretimeout seconds] [-pretimeout-action action]\n"  in usage()
476 "            [--softtimeout] [-softtimeout-action action]\n"  in usage()
479 		fprintf(stderr, "usage: watchdog [-d] [-t timeout]\n");  in usage()
500 			errx(EX_USAGE, "--%s argument %s", longopt, errstr);  in fetchtimeout()
502 			errx(EX_USAGE, "-%c argument %s", opt, errstr);  in fetchtimeout()
532 		    act_tbl[i].at_act) == -1)  in timeout_act_error()
536 	warnx("bad --%s argument '%s' must be one of (%s).",  in timeout_act_error()
574 	tv->tv_sec = ts->tv_sec;  in tstotv()
575 	tv->tv_usec = ts->tv_nsec / 1000;  in tstotv()
618 	 * If ints have 32 bits, then the maximum value for any timeout in  in tvtohz()
619 	 * 10ms ticks is 248 days.  in tvtohz()
621 	sec = tv->tv_sec;  in tvtohz()
622 	usec = tv->tv_usec;  in tvtohz()
624 		sec--;  in tvtohz()
631 			usec -= 1000000;  in tvtohz()
638 		ticks = (sec * 1000000 + (unsigned long)usec + (tick - 1))  in tvtohz()
642 		    + ((unsigned long)usec + (tick - 1)) / tick + 1;  in tvtohz()
685 	/* Get the default value of timeout_sec from the default timeout. */  in parseargs()
686 	pow2ns_to_ts(timeout, &ts);  in parseargs()
694 	if (argv[0][c - 1] == 'd')  in parseargs()
703 		    &longindex)) != -1) {  in parseargs()
730 			timeout = parse_timeout_to_pow2ns(c, NULL, optarg);  in parseargs()
732 				printf("Timeout is 2^%d nanoseconds\n",  in parseargs()
733 				    timeout);  in parseargs()
751 			} else if (!strcmp(lopt, "pretimeout-action")) {  in parseargs()
754 			} else if (!strcmp(lopt, "softtimeout-action")) {  in parseargs()
774 	if (carp_thresh_seconds == -1)  in parseargs()
779 	if (is_daemon && timeout < WD_TO_1SEC)  in parseargs()
780 		errx(EX_USAGE, "-t argument is less than one second.");  in parseargs()
784 			    "pretimeout (%d) >= timeout (%d -> %ld)\n"  in parseargs()
785 			    "see manual section TIMEOUT RESOLUTION",  in parseargs()