1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2003-2004 Sean M. Kelly <smkelly@FreeBSD.org>
5 * Copyright (c) 2013 iXsystems.com,
6 * author: Alfred Perlstein <alfred@freebsd.org>
7 *
8 * All rights reserved.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32 /*
33 * Software watchdog daemon.
34 */
35
36 #include <sys/types.h>
37 #include <sys/mman.h>
38 #include <sys/param.h>
39 #include <sys/rtprio.h>
40 #include <sys/stat.h>
41 #include <sys/time.h>
42 #include <sys/sysctl.h>
43 #include <sys/watchdog.h>
44
45 #include <err.h>
46 #include <errno.h>
47 #include <fcntl.h>
48 #include <libutil.h>
49 #include <math.h>
50 #include <paths.h>
51 #include <signal.h>
52 #include <stdio.h>
53 #include <stdint.h>
54 #include <stdlib.h>
55 #include <string.h>
56 #include <strings.h>
57 #include <sysexits.h>
58 #include <syslog.h>
59 #include <unistd.h>
60
61 #include <getopt.h>
62
63 static long fetchtimeout(int opt,
64 const char *longopt, const char *myoptarg, int zero_ok);
65 static void parseargs(int, char *[]);
66 static int seconds_to_pow2ns(int);
67 static void sighandler(int);
68 static void watchdog_loop(void);
69 static int watchdog_init(void);
70 static int watchdog_onoff(int onoff);
71 static int watchdog_patpat(u_int timeout);
72 static void usage(void);
73 static int tstotv(struct timeval *tv, struct timespec *ts);
74 static int tvtohz(struct timeval *tv);
75
76 static int debugging = 0;
77 static int end_program = 0;
78 static const char *pidfile = _PATH_VARRUN "watchdogd.pid";
79 static u_int timeout = WD_TO_128SEC;
80 static u_int exit_timeout = WD_TO_NEVER;
81 static u_int pretimeout = 0;
82 static u_int timeout_sec;
83 static u_int nap = 10;
84 static int passive = 0;
85 static int is_daemon = 0;
86 static int is_dry_run = 0; /* do not arm the watchdog, only
87 report on timing of the watch
88 program */
89 static int do_timedog = 0;
90 static int do_syslog = 1;
91 static int fd = -1;
92 static int carp_thresh_seconds = -1;
93 static char *test_cmd = NULL;
94
95 static const char *getopt_shortopts;
96
97 static int pretimeout_set;
98 static int pretimeout_act;
99 static int pretimeout_act_set;
100
101 static int softtimeout_set;
102 static int softtimeout_act;
103 static int softtimeout_act_set;
104
105 static struct option longopts[] = {
106 { "debug", no_argument, &debugging, 1 },
107 { "pretimeout", required_argument, &pretimeout_set, 1 },
108 { "pretimeout-action", required_argument, &pretimeout_act_set, 1 },
109 { "softtimeout", no_argument, &softtimeout_set, 1 },
110 { "softtimeout-action", required_argument, &softtimeout_act_set, 1 },
111 { NULL, 0, NULL, 0}
112 };
113
114 /*
115 * Periodically pat the watchdog, preventing it from firing.
116 */
117 int
main(int argc,char * argv[])118 main(int argc, char *argv[])
119 {
120 struct rtprio rtp;
121 struct pidfh *pfh;
122 pid_t otherpid;
123
124 if (getuid() != 0)
125 errx(EX_SOFTWARE, "not super user");
126
127 parseargs(argc, argv);
128
129 if (do_syslog)
130 openlog("watchdogd", LOG_CONS|LOG_NDELAY|LOG_PERROR,
131 LOG_DAEMON);
132
133 rtp.type = RTP_PRIO_REALTIME;
134 rtp.prio = 0;
135 if (rtprio(RTP_SET, 0, &rtp) == -1)
136 err(EX_OSERR, "rtprio");
137
138 if (!is_dry_run && watchdog_init() == -1)
139 errx(EX_SOFTWARE, "unable to initialize watchdog");
140
141 if (is_daemon) {
142 if (watchdog_onoff(1) == -1)
143 err(EX_OSERR, "patting the dog");
144
145 pfh = pidfile_open(pidfile, 0600, &otherpid);
146 if (pfh == NULL) {
147 if (errno == EEXIST) {
148 watchdog_onoff(0);
149 errx(EX_SOFTWARE, "%s already running, pid: %d",
150 getprogname(), otherpid);
151 }
152 warn("Cannot open or create pidfile");
153 }
154
155 if (debugging == 0 && daemon(0, 0) == -1) {
156 watchdog_onoff(0);
157 pidfile_remove(pfh);
158 err(EX_OSERR, "daemon");
159 }
160
161 signal(SIGHUP, SIG_IGN);
162 signal(SIGINT, sighandler);
163 signal(SIGTERM, sighandler);
164
165 pidfile_write(pfh);
166 if (madvise(0, 0, MADV_PROTECT) != 0)
167 warn("madvise failed");
168 if (mlockall(MCL_CURRENT | MCL_FUTURE) != 0)
169 warn("mlockall failed");
170
171 watchdog_loop();
172
173 /* exiting */
174 pidfile_remove(pfh);
175 return (EX_OK);
176 } else {
177 if (passive)
178 timeout |= WD_PASSIVE;
179 else
180 timeout |= WD_ACTIVE;
181 if (watchdog_patpat(timeout) < 0)
182 err(EX_OSERR, "patting the dog");
183 return (EX_OK);
184 }
185 }
186
187 static void
pow2ns_to_ts(int pow2ns,struct timespec * ts)188 pow2ns_to_ts(int pow2ns, struct timespec *ts)
189 {
190 uint64_t ns;
191
192 ns = 1ULL << pow2ns;
193 ts->tv_sec = ns / 1000000000ULL;
194 ts->tv_nsec = ns % 1000000000ULL;
195 }
196
197 /*
198 * Convert a timeout in seconds to N where 2^N nanoseconds is close to
199 * "seconds".
200 *
201 * The kernel expects the timeouts for watchdogs in "2^N nanosecond format".
202 */
203 static u_int
parse_timeout_to_pow2ns(char opt,const char * longopt,const char * myoptarg)204 parse_timeout_to_pow2ns(char opt, const char *longopt, const char *myoptarg)
205 {
206 double a;
207 u_int rv;
208 struct timespec ts;
209 struct timeval tv;
210 int ticks;
211 char shortopt[] = "- ";
212
213 if (!longopt)
214 shortopt[1] = opt;
215
216 a = fetchtimeout(opt, longopt, myoptarg, 1);
217
218 if (a == 0)
219 rv = WD_TO_NEVER;
220 else
221 rv = seconds_to_pow2ns(a);
222 pow2ns_to_ts(rv, &ts);
223 tstotv(&tv, &ts);
224 ticks = tvtohz(&tv);
225 if (debugging) {
226 printf("Timeout for %s%s "
227 "is 2^%d nanoseconds "
228 "(in: %s sec -> out: %jd sec %ld ns -> %d ticks)\n",
229 longopt ? "-" : "", longopt ? longopt : shortopt,
230 rv,
231 myoptarg, (intmax_t)ts.tv_sec, ts.tv_nsec, ticks);
232 }
233 if (ticks <= 0) {
234 errx(1, "Timeout for %s%s is too small, please choose a higher timeout.", longopt ? "-" : "", longopt ? longopt : shortopt);
235 }
236
237 return (rv);
238 }
239
240 /*
241 * Catch signals and begin shutdown process.
242 */
243 static void
sighandler(int signum)244 sighandler(int signum)
245 {
246
247 if (signum == SIGINT || signum == SIGTERM)
248 end_program = 1;
249 }
250
251 /*
252 * Open the watchdog device.
253 */
254 static int
watchdog_init(void)255 watchdog_init(void)
256 {
257
258 if (is_dry_run)
259 return 0;
260
261 fd = open("/dev/" _PATH_WATCHDOG, O_RDWR);
262 if (fd >= 0)
263 return (0);
264 warn("Could not open watchdog device");
265 return (-1);
266 }
267
268 /*
269 * If we are doing timing, then get the time.
270 */
271 static int
watchdog_getuptime(struct timespec * tp)272 watchdog_getuptime(struct timespec *tp)
273 {
274 int error;
275
276 if (!do_timedog)
277 return 0;
278
279 error = clock_gettime(CLOCK_UPTIME_FAST, tp);
280 if (error)
281 warn("clock_gettime");
282 return (error);
283 }
284
285 static long
watchdog_check_dogfunction_time(struct timespec * tp_start,struct timespec * tp_end)286 watchdog_check_dogfunction_time(struct timespec *tp_start,
287 struct timespec *tp_end)
288 {
289 struct timeval tv_start, tv_end, tv_now, tv;
290 const char *cmd_prefix, *cmd;
291 struct timespec tp_now;
292 int sec;
293
294 if (!do_timedog)
295 return (0);
296
297 TIMESPEC_TO_TIMEVAL(&tv_start, tp_start);
298 TIMESPEC_TO_TIMEVAL(&tv_end, tp_end);
299 timersub(&tv_end, &tv_start, &tv);
300 sec = tv.tv_sec;
301 if (sec < carp_thresh_seconds)
302 return (sec);
303
304 if (test_cmd) {
305 cmd_prefix = "Watchdog program";
306 cmd = test_cmd;
307 } else {
308 cmd_prefix = "Watchdog operation";
309 cmd = "stat(\"/etc\", &sb)";
310 }
311 if (do_syslog)
312 syslog(LOG_CRIT, "%s: '%s' took too long: "
313 "%d.%06ld seconds >= %d seconds threshold",
314 cmd_prefix, cmd, sec, (long)tv.tv_usec,
315 carp_thresh_seconds);
316 else
317 warnx("%s: '%s' took too long: "
318 "%d.%06ld seconds >= %d seconds threshold",
319 cmd_prefix, cmd, sec, (long)tv.tv_usec,
320 carp_thresh_seconds);
321
322 /*
323 * Adjust the sleep interval again in case syslog(3) took a non-trivial
324 * amount of time to run.
325 */
326 if (watchdog_getuptime(&tp_now))
327 return (sec);
328 TIMESPEC_TO_TIMEVAL(&tv_now, &tp_now);
329 timersub(&tv_now, &tv_start, &tv);
330 sec = tv.tv_sec;
331
332 return (sec);
333 }
334
335 /*
336 * Main program loop which is iterated every second.
337 */
338 static void
watchdog_loop(void)339 watchdog_loop(void)
340 {
341 struct timespec ts_start, ts_end;
342 struct stat sb;
343 long waited;
344 int error, failed;
345
346 while (end_program != 2) {
347 failed = 0;
348
349 error = watchdog_getuptime(&ts_start);
350 if (error) {
351 end_program = 1;
352 goto try_end;
353 }
354
355 if (test_cmd != NULL)
356 failed = system(test_cmd);
357 else
358 failed = stat("/etc", &sb);
359
360 error = watchdog_getuptime(&ts_end);
361 if (error) {
362 end_program = 1;
363 goto try_end;
364 }
365
366 if (failed == 0)
367 watchdog_patpat(timeout|WD_ACTIVE);
368
369 waited = watchdog_check_dogfunction_time(&ts_start, &ts_end);
370 if (nap - waited > 0)
371 sleep(nap - waited);
372
373 try_end:
374 if (end_program != 0) {
375 if (watchdog_onoff(0) == 0) {
376 end_program = 2;
377 } else {
378 warnx("Could not stop the watchdog, not exiting");
379 end_program = 0;
380 }
381 }
382 }
383 }
384
385 /*
386 * Reset the watchdog timer. This function must be called periodically
387 * to keep the watchdog from firing.
388 */
389 static int
watchdog_patpat(u_int t)390 watchdog_patpat(u_int t)
391 {
392
393 if (is_dry_run)
394 return 0;
395
396 return ioctl(fd, WDIOCPATPAT, &t);
397 }
398
399 /*
400 * Toggle the kernel's watchdog. This routine is used to enable and
401 * disable the watchdog.
402 */
403 static int
watchdog_onoff(int onoff)404 watchdog_onoff(int onoff)
405 {
406 int error;
407
408 /* fake successful watchdog op if a dry run */
409 if (is_dry_run)
410 return 0;
411
412 if (onoff) {
413 /*
414 * Call the WDIOC_SETSOFT regardless of softtimeout_set
415 * because we'll need to turn it off if someone had turned
416 * it on.
417 */
418 error = ioctl(fd, WDIOC_SETSOFT, &softtimeout_set);
419 if (error) {
420 warn("setting WDIOC_SETSOFT %d", softtimeout_set);
421 return (error);
422 }
423 error = watchdog_patpat((timeout|WD_ACTIVE));
424 if (error) {
425 warn("watchdog_patpat failed");
426 goto failsafe;
427 }
428 if (softtimeout_act_set) {
429 error = ioctl(fd, WDIOC_SETSOFTTIMEOUTACT,
430 &softtimeout_act);
431 if (error) {
432 warn("setting WDIOC_SETSOFTTIMEOUTACT %d",
433 softtimeout_act);
434 goto failsafe;
435 }
436 }
437 if (pretimeout_set) {
438 error = ioctl(fd, WDIOC_SETPRETIMEOUT, &pretimeout);
439 if (error) {
440 warn("setting WDIOC_SETPRETIMEOUT %d",
441 pretimeout);
442 goto failsafe;
443 }
444 }
445 if (pretimeout_act_set) {
446 error = ioctl(fd, WDIOC_SETPRETIMEOUTACT,
447 &pretimeout_act);
448 if (error) {
449 warn("setting WDIOC_SETPRETIMEOUTACT %d",
450 pretimeout_act);
451 goto failsafe;
452 }
453 }
454 /* pat one more time for good measure */
455 return watchdog_patpat((timeout|WD_ACTIVE));
456 } else {
457 return watchdog_patpat(exit_timeout);
458 }
459 failsafe:
460 watchdog_patpat(exit_timeout);
461 return (error);
462 }
463
464 /*
465 * Tell user how to use the program.
466 */
467 static void
usage(void)468 usage(void)
469 {
470 if (is_daemon)
471 fprintf(stderr, "usage:\n"
472 " watchdogd [-dnSw] [-e cmd] [-I pidfile] [-s sleep] [-t timeout]\n"
473 " [-T script_timeout] [-x exit_timeout]\n"
474 " [--debug]\n"
475 " [--pretimeout seconds] [-pretimeout-action action]\n"
476 " [--softtimeout] [-softtimeout-action action]\n"
477 );
478 else
479 fprintf(stderr, "usage: watchdog [-d] [-t timeout]\n");
480 exit(EX_USAGE);
481 }
482
483 static long
fetchtimeout(int opt,const char * longopt,const char * myoptarg,int zero_ok)484 fetchtimeout(int opt, const char *longopt, const char *myoptarg, int zero_ok)
485 {
486 const char *errstr;
487 char *p;
488 long rv;
489
490 errstr = NULL;
491 p = NULL;
492 errno = 0;
493 rv = strtol(myoptarg, &p, 0);
494 if ((p != NULL && *p != '\0') || errno != 0)
495 errstr = "is not a number";
496 if (rv < 0 || (!zero_ok && rv == 0))
497 errstr = "must be greater than zero";
498 if (errstr) {
499 if (longopt)
500 errx(EX_USAGE, "--%s argument %s", longopt, errstr);
501 else
502 errx(EX_USAGE, "-%c argument %s", opt, errstr);
503 }
504 return (rv);
505 }
506
507 struct act_tbl {
508 const char *at_act;
509 int at_value;
510 };
511
512 static const struct act_tbl act_tbl[] = {
513 { "panic", WD_SOFT_PANIC },
514 { "ddb", WD_SOFT_DDB },
515 { "log", WD_SOFT_LOG },
516 { "printf", WD_SOFT_PRINTF },
517 { NULL, 0 }
518 };
519
520 static void
timeout_act_error(const char * lopt,const char * badact)521 timeout_act_error(const char *lopt, const char *badact)
522 {
523 char *opts, *oldopts;
524 int i;
525
526 opts = NULL;
527 for (i = 0; act_tbl[i].at_act != NULL; i++) {
528 oldopts = opts;
529 if (asprintf(&opts, "%s%s%s",
530 oldopts == NULL ? "" : oldopts,
531 oldopts == NULL ? "" : ", ",
532 act_tbl[i].at_act) == -1)
533 err(EX_OSERR, "malloc");
534 free(oldopts);
535 }
536 warnx("bad --%s argument '%s' must be one of (%s).",
537 lopt, badact, opts);
538 usage();
539 }
540
541 /*
542 * Take a comma separated list of actions and or the flags
543 * together for the ioctl.
544 */
545 static int
timeout_act_str2int(const char * lopt,const char * acts)546 timeout_act_str2int(const char *lopt, const char *acts)
547 {
548 int i;
549 char *dupacts, *tofree;
550 char *o;
551 int rv = 0;
552
553 tofree = dupacts = strdup(acts);
554 if (!tofree)
555 err(EX_OSERR, "malloc");
556 while ((o = strsep(&dupacts, ",")) != NULL) {
557 for (i = 0; act_tbl[i].at_act != NULL; i++) {
558 if (!strcmp(o, act_tbl[i].at_act)) {
559 rv |= act_tbl[i].at_value;
560 break;
561 }
562 }
563 if (act_tbl[i].at_act == NULL)
564 timeout_act_error(lopt, o);
565 }
566 free(tofree);
567 return rv;
568 }
569
570 int
tstotv(struct timeval * tv,struct timespec * ts)571 tstotv(struct timeval *tv, struct timespec *ts)
572 {
573
574 tv->tv_sec = ts->tv_sec;
575 tv->tv_usec = ts->tv_nsec / 1000;
576 return 0;
577 }
578
579 /*
580 * Convert a timeval to a number of ticks.
581 * Mostly copied from the kernel.
582 */
583 int
tvtohz(struct timeval * tv)584 tvtohz(struct timeval *tv)
585 {
586 register unsigned long ticks;
587 register long sec, usec;
588 int hz;
589 size_t hzsize;
590 int error;
591 int tick;
592
593 hzsize = sizeof(hz);
594
595 error = sysctlbyname("kern.hz", &hz, &hzsize, NULL, 0);
596 if (error)
597 err(1, "sysctlbyname kern.hz");
598
599 tick = 1000000 / hz;
600
601 /*
602 * If the number of usecs in the whole seconds part of the time
603 * difference fits in a long, then the total number of usecs will
604 * fit in an unsigned long. Compute the total and convert it to
605 * ticks, rounding up and adding 1 to allow for the current tick
606 * to expire. Rounding also depends on unsigned long arithmetic
607 * to avoid overflow.
608 *
609 * Otherwise, if the number of ticks in the whole seconds part of
610 * the time difference fits in a long, then convert the parts to
611 * ticks separately and add, using similar rounding methods and
612 * overflow avoidance. This method would work in the previous
613 * case but it is slightly slower and assumes that hz is integral.
614 *
615 * Otherwise, round the time difference down to the maximum
616 * representable value.
617 *
618 * If ints have 32 bits, then the maximum value for any timeout in
619 * 10ms ticks is 248 days.
620 */
621 sec = tv->tv_sec;
622 usec = tv->tv_usec;
623 if (usec < 0) {
624 sec--;
625 usec += 1000000;
626 }
627 if (sec < 0) {
628 #ifdef DIAGNOSTIC
629 if (usec > 0) {
630 sec++;
631 usec -= 1000000;
632 }
633 printf("tvotohz: negative time difference %ld sec %ld usec\n",
634 sec, usec);
635 #endif
636 ticks = 1;
637 } else if (sec <= LONG_MAX / 1000000)
638 ticks = (sec * 1000000 + (unsigned long)usec + (tick - 1))
639 / tick + 1;
640 else if (sec <= LONG_MAX / hz)
641 ticks = sec * hz
642 + ((unsigned long)usec + (tick - 1)) / tick + 1;
643 else
644 ticks = LONG_MAX;
645 if (ticks > INT_MAX)
646 ticks = INT_MAX;
647 return ((int)ticks);
648 }
649
650 static int
seconds_to_pow2ns(int seconds)651 seconds_to_pow2ns(int seconds)
652 {
653 uint64_t power;
654 uint64_t ns;
655 uint64_t shifted;
656
657 if (seconds <= 0)
658 errx(1, "seconds %d < 0", seconds);
659 ns = ((uint64_t)seconds) * 1000000000ULL;
660 power = flsll(ns);
661 shifted = 1ULL << power;
662 if (shifted <= ns) {
663 power++;
664 }
665 if (debugging) {
666 printf("shifted %lld\n", (long long)shifted);
667 printf("seconds_to_pow2ns: seconds: %d, ns %lld, power %d\n",
668 seconds, (long long)ns, (int)power);
669 }
670 return (power);
671 }
672
673
674 /*
675 * Handle the few command line arguments supported.
676 */
677 static void
parseargs(int argc,char * argv[])678 parseargs(int argc, char *argv[])
679 {
680 struct timespec ts;
681 int longindex;
682 int c;
683 const char *lopt;
684
685 /* Get the default value of timeout_sec from the default timeout. */
686 pow2ns_to_ts(timeout, &ts);
687 timeout_sec = ts.tv_sec;
688
689 /*
690 * if we end with a 'd' aka 'watchdogd' then we are the daemon program,
691 * otherwise run as a command line utility.
692 */
693 c = strlen(argv[0]);
694 if (argv[0][c - 1] == 'd')
695 is_daemon = 1;
696
697 if (is_daemon)
698 getopt_shortopts = "I:de:ns:t:ST:wx:?";
699 else
700 getopt_shortopts = "dt:?";
701
702 while ((c = getopt_long(argc, argv, getopt_shortopts, longopts,
703 &longindex)) != -1) {
704 switch (c) {
705 case 'I':
706 pidfile = optarg;
707 break;
708 case 'd':
709 debugging = 1;
710 break;
711 case 'e':
712 test_cmd = strdup(optarg);
713 break;
714 case 'n':
715 is_dry_run = 1;
716 break;
717 #ifdef notyet
718 case 'p':
719 passive = 1;
720 break;
721 #endif
722 case 's':
723 nap = fetchtimeout(c, NULL, optarg, 0);
724 break;
725 case 'S':
726 do_syslog = 0;
727 break;
728 case 't':
729 timeout_sec = atoi(optarg);
730 timeout = parse_timeout_to_pow2ns(c, NULL, optarg);
731 if (debugging)
732 printf("Timeout is 2^%d nanoseconds\n",
733 timeout);
734 break;
735 case 'T':
736 carp_thresh_seconds =
737 fetchtimeout(c, "NULL", optarg, 0);
738 break;
739 case 'w':
740 do_timedog = 1;
741 break;
742 case 'x':
743 exit_timeout = parse_timeout_to_pow2ns(c, NULL, optarg);
744 if (exit_timeout != 0)
745 exit_timeout |= WD_ACTIVE;
746 break;
747 case 0:
748 lopt = longopts[longindex].name;
749 if (!strcmp(lopt, "pretimeout")) {
750 pretimeout = fetchtimeout(0, lopt, optarg, 0);
751 } else if (!strcmp(lopt, "pretimeout-action")) {
752 pretimeout_act = timeout_act_str2int(lopt,
753 optarg);
754 } else if (!strcmp(lopt, "softtimeout-action")) {
755 softtimeout_act = timeout_act_str2int(lopt,
756 optarg);
757 } else {
758 /* warnx("bad option at index %d: %s", optind,
759 argv[optind]);
760 usage();
761 */
762 }
763 break;
764 case '?':
765 default:
766 usage();
767 /* NOTREACHED */
768 }
769 }
770
771 if (nap > timeout_sec / 2)
772 nap = timeout_sec / 2;
773
774 if (carp_thresh_seconds == -1)
775 carp_thresh_seconds = nap;
776
777 if (argc != optind)
778 errx(EX_USAGE, "extra arguments.");
779 if (is_daemon && timeout < WD_TO_1SEC)
780 errx(EX_USAGE, "-t argument is less than one second.");
781 if (pretimeout_set) {
782 if (pretimeout >= timeout_sec) {
783 errx(EX_USAGE,
784 "pretimeout (%d) >= timeout (%d -> %ld)\n"
785 "see manual section TIMEOUT RESOLUTION",
786 pretimeout, timeout_sec, (long)ts.tv_sec);
787 }
788 }
789 }
790