1 /*-
2 * Copyright (c) 2003-2004 Sean M. Kelly <smkelly@FreeBSD.org>
3 * Copyright (c) 2013 iXsystems.com,
4 * author: Alfred Perlstein <alfred@freebsd.org>
5 *
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30 /*
31 * Software watchdog daemon.
32 */
33
34 #include <sys/types.h>
35 __FBSDID("$FreeBSD$");
36
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 pretimeout = 0;
81 static u_int timeout_sec;
82 static u_int passive = 0;
83 static int is_daemon = 0;
84 static int is_dry_run = 0; /* do not arm the watchdog, only
85 report on timing of the watch
86 program */
87 static int do_timedog = 0;
88 static int do_syslog = 1;
89 static int fd = -1;
90 static int nap = 1;
91 static int carp_thresh_seconds = -1;
92 static char *test_cmd = NULL;
93
94 static const char *getopt_shortopts;
95
96 static int pretimeout_set;
97 static int pretimeout_act;
98 static int pretimeout_act_set;
99
100 static int softtimeout_set;
101 static int softtimeout_act;
102 static int softtimeout_act_set;
103
104 static struct option longopts[] = {
105 { "debug", no_argument, &debugging, 1 },
106 { "pretimeout", required_argument, &pretimeout_set, 1 },
107 { "pretimeout-action", required_argument, &pretimeout_act_set, 1 },
108 { "softtimeout", no_argument, &softtimeout_set, 1 },
109 { "softtimeout-action", required_argument, &softtimeout_act_set, 1 },
110 { NULL, 0, NULL, 0}
111 };
112
113 /*
114 * Ask malloc() to map minimum-sized chunks of virtual address space at a time,
115 * so that mlockall() won't needlessly wire megabytes of unused memory into the
116 * process. This must be done using the malloc_conf string so that it gets set
117 * up before the first allocation, which happens before entry to main().
118 */
119 const char * malloc_conf = "lg_chunk:0";
120
121 /*
122 * Periodically pat the watchdog, preventing it from firing.
123 */
124 int
main(int argc,char * argv[])125 main(int argc, char *argv[])
126 {
127 struct rtprio rtp;
128 struct pidfh *pfh;
129 pid_t otherpid;
130
131 if (getuid() != 0)
132 errx(EX_SOFTWARE, "not super user");
133
134 parseargs(argc, argv);
135
136 if (do_syslog)
137 openlog("watchdogd", LOG_CONS|LOG_NDELAY|LOG_PERROR,
138 LOG_DAEMON);
139
140 rtp.type = RTP_PRIO_REALTIME;
141 rtp.prio = 0;
142 if (rtprio(RTP_SET, 0, &rtp) == -1)
143 err(EX_OSERR, "rtprio");
144
145 if (!is_dry_run && watchdog_init() == -1)
146 errx(EX_SOFTWARE, "unable to initialize watchdog");
147
148 if (is_daemon) {
149 if (watchdog_onoff(1) == -1)
150 err(EX_OSERR, "patting the dog");
151
152 pfh = pidfile_open(pidfile, 0600, &otherpid);
153 if (pfh == NULL) {
154 if (errno == EEXIST) {
155 watchdog_onoff(0);
156 errx(EX_SOFTWARE, "%s already running, pid: %d",
157 getprogname(), otherpid);
158 }
159 warn("Cannot open or create pidfile");
160 }
161
162 if (debugging == 0 && daemon(0, 0) == -1) {
163 watchdog_onoff(0);
164 pidfile_remove(pfh);
165 err(EX_OSERR, "daemon");
166 }
167
168 signal(SIGHUP, SIG_IGN);
169 signal(SIGINT, sighandler);
170 signal(SIGTERM, sighandler);
171
172 pidfile_write(pfh);
173 if (madvise(0, 0, MADV_PROTECT) != 0)
174 warn("madvise failed");
175 if (mlockall(MCL_CURRENT | MCL_FUTURE) != 0)
176 warn("mlockall failed");
177
178 watchdog_loop();
179
180 /* exiting */
181 pidfile_remove(pfh);
182 return (EX_OK);
183 } else {
184 if (passive)
185 timeout |= WD_PASSIVE;
186 else
187 timeout |= WD_ACTIVE;
188 if (watchdog_patpat(timeout) < 0)
189 err(EX_OSERR, "patting the dog");
190 return (EX_OK);
191 }
192 }
193
194 static void
pow2ns_to_ts(int pow2ns,struct timespec * ts)195 pow2ns_to_ts(int pow2ns, struct timespec *ts)
196 {
197 uint64_t ns;
198
199 ns = 1ULL << pow2ns;
200 ts->tv_sec = ns / 1000000000ULL;
201 ts->tv_nsec = ns % 1000000000ULL;
202 }
203
204 /*
205 * Convert a timeout in seconds to N where 2^N nanoseconds is close to
206 * "seconds".
207 *
208 * The kernel expects the timeouts for watchdogs in "2^N nanosecond format".
209 */
210 static u_int
parse_timeout_to_pow2ns(char opt,const char * longopt,const char * myoptarg)211 parse_timeout_to_pow2ns(char opt, const char *longopt, const char *myoptarg)
212 {
213 double a;
214 u_int rv;
215 struct timespec ts;
216 struct timeval tv;
217 int ticks;
218 char shortopt[] = "- ";
219
220 if (!longopt)
221 shortopt[1] = opt;
222
223 a = fetchtimeout(opt, longopt, myoptarg, 1);
224
225 if (a == 0)
226 rv = WD_TO_NEVER;
227 else
228 rv = seconds_to_pow2ns(a);
229 pow2ns_to_ts(rv, &ts);
230 tstotv(&tv, &ts);
231 ticks = tvtohz(&tv);
232 if (debugging) {
233 printf("Timeout for %s%s "
234 "is 2^%d nanoseconds "
235 "(in: %s sec -> out: %jd sec %ld ns -> %d ticks)\n",
236 longopt ? "-" : "", longopt ? longopt : shortopt,
237 rv,
238 myoptarg, (intmax_t)ts.tv_sec, ts.tv_nsec, ticks);
239 }
240 if (ticks <= 0) {
241 errx(1, "Timeout for %s%s is too small, please choose a higher timeout.", longopt ? "-" : "", longopt ? longopt : shortopt);
242 }
243
244 return (rv);
245 }
246
247 /*
248 * Catch signals and begin shutdown process.
249 */
250 static void
sighandler(int signum)251 sighandler(int signum)
252 {
253
254 if (signum == SIGINT || signum == SIGTERM)
255 end_program = 1;
256 }
257
258 /*
259 * Open the watchdog device.
260 */
261 static int
watchdog_init(void)262 watchdog_init(void)
263 {
264
265 if (is_dry_run)
266 return 0;
267
268 fd = open("/dev/" _PATH_WATCHDOG, O_RDWR);
269 if (fd >= 0)
270 return (0);
271 warn("Could not open watchdog device");
272 return (-1);
273 }
274
275 /*
276 * If we are doing timing, then get the time.
277 */
278 static int
watchdog_getuptime(struct timespec * tp)279 watchdog_getuptime(struct timespec *tp)
280 {
281 int error;
282
283 if (!do_timedog)
284 return 0;
285
286 error = clock_gettime(CLOCK_UPTIME_FAST, tp);
287 if (error)
288 warn("clock_gettime");
289 return (error);
290 }
291
292 static long
watchdog_check_dogfunction_time(struct timespec * tp_start,struct timespec * tp_end)293 watchdog_check_dogfunction_time(struct timespec *tp_start,
294 struct timespec *tp_end)
295 {
296 struct timeval tv_start, tv_end, tv_now, tv;
297 const char *cmd_prefix, *cmd;
298 struct timespec tp_now;
299 int sec;
300
301 if (!do_timedog)
302 return (0);
303
304 TIMESPEC_TO_TIMEVAL(&tv_start, tp_start);
305 TIMESPEC_TO_TIMEVAL(&tv_end, tp_end);
306 timersub(&tv_end, &tv_start, &tv);
307 sec = tv.tv_sec;
308 if (sec < carp_thresh_seconds)
309 return (sec);
310
311 if (test_cmd) {
312 cmd_prefix = "Watchdog program";
313 cmd = test_cmd;
314 } else {
315 cmd_prefix = "Watchdog operation";
316 cmd = "stat(\"/etc\", &sb)";
317 }
318 if (do_syslog)
319 syslog(LOG_CRIT, "%s: '%s' took too long: "
320 "%d.%06ld seconds >= %d seconds threshold",
321 cmd_prefix, cmd, sec, (long)tv.tv_usec,
322 carp_thresh_seconds);
323 else
324 warnx("%s: '%s' took too long: "
325 "%d.%06ld seconds >= %d seconds threshold",
326 cmd_prefix, cmd, sec, (long)tv.tv_usec,
327 carp_thresh_seconds);
328
329 /*
330 * Adjust the sleep interval again in case syslog(3) took a non-trivial
331 * amount of time to run.
332 */
333 if (watchdog_getuptime(&tp_now))
334 return (sec);
335 TIMESPEC_TO_TIMEVAL(&tv_now, &tp_now);
336 timersub(&tv_now, &tv_start, &tv);
337 sec = tv.tv_sec;
338
339 return (sec);
340 }
341
342 /*
343 * Main program loop which is iterated every second.
344 */
345 static void
watchdog_loop(void)346 watchdog_loop(void)
347 {
348 struct timespec ts_start, ts_end;
349 struct stat sb;
350 long waited;
351 int error, failed, retries = 0;
352
353 while (end_program != 2) {
354 failed = 0;
355
356 error = watchdog_getuptime(&ts_start);
357 if (error) {
358 end_program = 1;
359 goto try_end;
360 }
361
362 if (test_cmd != NULL)
363 failed = system(test_cmd);
364 else
365 failed = stat("/etc", &sb);
366
367 error = watchdog_getuptime(&ts_end);
368 if (error) {
369 end_program = 1;
370 goto try_end;
371 }
372
373 if (failed == 0)
374 watchdog_patpat(timeout|WD_ACTIVE);
375
376 waited = watchdog_check_dogfunction_time(&ts_start, &ts_end);
377 if (nap - waited > 0)
378 sleep(nap - waited);
379
380 try_end:
381 if (end_program != 0) {
382 error = watchdog_onoff(0);
383 if (error == 0) {
384 end_program = 2;
385 } else if (retries < 2) {
386 warnx("Could not stop the watchdog, retrying");
387 syslog(LOG_CRIT, "Could not stop the watchdog, retrying");
388 retries ++;
389 } else {
390 warnx("Retry exhausted, existing anyway");
391 syslog(LOG_CRIT, "stop watchdog took too long");
392 end_program = 2;
393 }
394 }
395 }
396 }
397
398 /*
399 * Reset the watchdog timer. This function must be called periodically
400 * to keep the watchdog from firing.
401 */
402 static int
watchdog_patpat(u_int t)403 watchdog_patpat(u_int t)
404 {
405
406 if (is_dry_run)
407 return 0;
408
409 return ioctl(fd, WDIOCPATPAT, &t);
410 }
411
412 /*
413 * Toggle the kernel's watchdog. This routine is used to enable and
414 * disable the watchdog.
415 */
416 static int
watchdog_onoff(int onoff)417 watchdog_onoff(int onoff)
418 {
419 int error;
420
421 /* fake successful watchdog op if a dry run */
422 if (is_dry_run)
423 return 0;
424
425 if (onoff) {
426 /*
427 * Call the WDIOC_SETSOFT regardless of softtimeout_set
428 * because we'll need to turn it off if someone had turned
429 * it on.
430 */
431 error = ioctl(fd, WDIOC_SETSOFT, &softtimeout_set);
432 if (error) {
433 warn("setting WDIOC_SETSOFT %d", softtimeout_set);
434 return (error);
435 }
436 error = watchdog_patpat((timeout|WD_ACTIVE));
437 if (error) {
438 warn("watchdog_patpat failed");
439 goto failsafe;
440 }
441 if (softtimeout_act_set) {
442 error = ioctl(fd, WDIOC_SETSOFTTIMEOUTACT,
443 &softtimeout_act);
444 if (error) {
445 warn("setting WDIOC_SETSOFTTIMEOUTACT %d",
446 softtimeout_act);
447 goto failsafe;
448 }
449 }
450 if (pretimeout_set) {
451 error = ioctl(fd, WDIOC_SETPRETIMEOUT, &pretimeout);
452 if (error) {
453 warn("setting WDIOC_SETPRETIMEOUT %d",
454 pretimeout);
455 goto failsafe;
456 }
457 }
458 if (pretimeout_act_set) {
459 error = ioctl(fd, WDIOC_SETPRETIMEOUTACT,
460 &pretimeout_act);
461 if (error) {
462 warn("setting WDIOC_SETPRETIMEOUTACT %d",
463 pretimeout_act);
464 goto failsafe;
465 }
466 }
467 /* pat one more time for good measure */
468 return watchdog_patpat((timeout|WD_ACTIVE));
469 } else {
470 return watchdog_patpat(0);
471 }
472 failsafe:
473 watchdog_patpat(0);
474 return (error);
475 }
476
477 /*
478 * Tell user how to use the program.
479 */
480 static void
usage(void)481 usage(void)
482 {
483 if (is_daemon)
484 fprintf(stderr, "usage:\n"
485 " watchdogd [-dnSw] [-e cmd] [-I file] [-s sleep] [-t timeout]\n"
486 " [-T script_timeout]\n"
487 " [--debug]\n"
488 " [--pretimeout seconds] [-pretimeout-action action]\n"
489 " [--softtimeout] [-softtimeout-action action]\n"
490 );
491 else
492 fprintf(stderr, "usage: watchdog [-d] [-t timeout]\n");
493 exit(EX_USAGE);
494 }
495
496 static long
fetchtimeout(int opt,const char * longopt,const char * myoptarg,int zero_ok)497 fetchtimeout(int opt, const char *longopt, const char *myoptarg, int zero_ok)
498 {
499 const char *errstr;
500 char *p;
501 long rv;
502
503 errstr = NULL;
504 p = NULL;
505 errno = 0;
506 rv = strtol(myoptarg, &p, 0);
507 if ((p != NULL && *p != '\0') || errno != 0)
508 errstr = "is not a number";
509 if (rv < 0 || (!zero_ok && rv == 0))
510 errstr = "must be greater than zero";
511 if (errstr) {
512 if (longopt)
513 errx(EX_USAGE, "--%s argument %s", longopt, errstr);
514 else
515 errx(EX_USAGE, "-%c argument %s", opt, errstr);
516 }
517 return (rv);
518 }
519
520 struct act_tbl {
521 const char *at_act;
522 int at_value;
523 };
524
525 static const struct act_tbl act_tbl[] = {
526 { "panic", WD_SOFT_PANIC },
527 { "ddb", WD_SOFT_DDB },
528 { "log", WD_SOFT_LOG },
529 { "printf", WD_SOFT_PRINTF },
530 { NULL, 0 }
531 };
532
533 static void
timeout_act_error(const char * lopt,const char * badact)534 timeout_act_error(const char *lopt, const char *badact)
535 {
536 char *opts, *oldopts;
537 int i;
538
539 opts = NULL;
540 for (i = 0; act_tbl[i].at_act != NULL; i++) {
541 oldopts = opts;
542 if (asprintf(&opts, "%s%s%s",
543 oldopts == NULL ? "" : oldopts,
544 oldopts == NULL ? "" : ", ",
545 act_tbl[i].at_act) == -1)
546 err(EX_OSERR, "malloc");
547 free(oldopts);
548 }
549 warnx("bad --%s argument '%s' must be one of (%s).",
550 lopt, badact, opts);
551 usage();
552 }
553
554 /*
555 * Take a comma separated list of actions and or the flags
556 * together for the ioctl.
557 */
558 static int
timeout_act_str2int(const char * lopt,const char * acts)559 timeout_act_str2int(const char *lopt, const char *acts)
560 {
561 int i;
562 char *dupacts, *tofree;
563 char *o;
564 int rv = 0;
565
566 tofree = dupacts = strdup(acts);
567 if (!tofree)
568 err(EX_OSERR, "malloc");
569 while ((o = strsep(&dupacts, ",")) != NULL) {
570 for (i = 0; act_tbl[i].at_act != NULL; i++) {
571 if (!strcmp(o, act_tbl[i].at_act)) {
572 rv |= act_tbl[i].at_value;
573 break;
574 }
575 }
576 if (act_tbl[i].at_act == NULL)
577 timeout_act_error(lopt, o);
578 }
579 free(tofree);
580 return rv;
581 }
582
583 int
tstotv(struct timeval * tv,struct timespec * ts)584 tstotv(struct timeval *tv, struct timespec *ts)
585 {
586
587 tv->tv_sec = ts->tv_sec;
588 tv->tv_usec = ts->tv_nsec / 1000;
589 return 0;
590 }
591
592 /*
593 * Convert a timeval to a number of ticks.
594 * Mostly copied from the kernel.
595 */
596 int
tvtohz(struct timeval * tv)597 tvtohz(struct timeval *tv)
598 {
599 register unsigned long ticks;
600 register long sec, usec;
601 int hz;
602 size_t hzsize;
603 int error;
604 int tick;
605
606 hzsize = sizeof(hz);
607
608 error = sysctlbyname("kern.hz", &hz, &hzsize, NULL, 0);
609 if (error)
610 err(1, "sysctlbyname kern.hz");
611
612 tick = 1000000 / hz;
613
614 /*
615 * If the number of usecs in the whole seconds part of the time
616 * difference fits in a long, then the total number of usecs will
617 * fit in an unsigned long. Compute the total and convert it to
618 * ticks, rounding up and adding 1 to allow for the current tick
619 * to expire. Rounding also depends on unsigned long arithmetic
620 * to avoid overflow.
621 *
622 * Otherwise, if the number of ticks in the whole seconds part of
623 * the time difference fits in a long, then convert the parts to
624 * ticks separately and add, using similar rounding methods and
625 * overflow avoidance. This method would work in the previous
626 * case but it is slightly slower and assumes that hz is integral.
627 *
628 * Otherwise, round the time difference down to the maximum
629 * representable value.
630 *
631 * If ints have 32 bits, then the maximum value for any timeout in
632 * 10ms ticks is 248 days.
633 */
634 sec = tv->tv_sec;
635 usec = tv->tv_usec;
636 if (usec < 0) {
637 sec--;
638 usec += 1000000;
639 }
640 if (sec < 0) {
641 #ifdef DIAGNOSTIC
642 if (usec > 0) {
643 sec++;
644 usec -= 1000000;
645 }
646 printf("tvotohz: negative time difference %ld sec %ld usec\n",
647 sec, usec);
648 #endif
649 ticks = 1;
650 } else if (sec <= LONG_MAX / 1000000)
651 ticks = (sec * 1000000 + (unsigned long)usec + (tick - 1))
652 / tick + 1;
653 else if (sec <= LONG_MAX / hz)
654 ticks = sec * hz
655 + ((unsigned long)usec + (tick - 1)) / tick + 1;
656 else
657 ticks = LONG_MAX;
658 if (ticks > INT_MAX)
659 ticks = INT_MAX;
660 return ((int)ticks);
661 }
662
663 static int
seconds_to_pow2ns(int seconds)664 seconds_to_pow2ns(int seconds)
665 {
666 uint64_t power;
667 uint64_t ns;
668 uint64_t shifted;
669
670 if (seconds <= 0)
671 errx(1, "seconds %d < 0", seconds);
672 ns = ((uint64_t)seconds) * 1000000000ULL;
673 power = flsll(ns);
674 shifted = 1ULL << power;
675 if (shifted <= ns) {
676 power++;
677 }
678 if (debugging) {
679 printf("shifted %lld\n", (long long)shifted);
680 printf("seconds_to_pow2ns: seconds: %d, ns %lld, power %d\n",
681 seconds, (long long)ns, (int)power);
682 }
683 return (power);
684 }
685
686
687 /*
688 * Handle the few command line arguments supported.
689 */
690 static void
parseargs(int argc,char * argv[])691 parseargs(int argc, char *argv[])
692 {
693 int longindex;
694 int c;
695 const char *lopt;
696
697 /*
698 * if we end with a 'd' aka 'watchdogd' then we are the daemon program,
699 * otherwise run as a command line utility.
700 */
701 c = strlen(argv[0]);
702 if (argv[0][c - 1] == 'd')
703 is_daemon = 1;
704
705 if (is_daemon)
706 getopt_shortopts = "I:de:ns:t:ST:w?";
707 else
708 getopt_shortopts = "dt:?";
709
710 while ((c = getopt_long(argc, argv, getopt_shortopts, longopts,
711 &longindex)) != -1) {
712 switch (c) {
713 case 'I':
714 pidfile = optarg;
715 break;
716 case 'd':
717 debugging = 1;
718 break;
719 case 'e':
720 test_cmd = strdup(optarg);
721 break;
722 case 'n':
723 is_dry_run = 1;
724 break;
725 #ifdef notyet
726 case 'p':
727 passive = 1;
728 break;
729 #endif
730 case 's':
731 nap = fetchtimeout(c, NULL, optarg, 0);
732 break;
733 case 'S':
734 do_syslog = 0;
735 break;
736 case 't':
737 timeout_sec = atoi(optarg);
738 timeout = parse_timeout_to_pow2ns(c, NULL, optarg);
739 if (debugging)
740 printf("Timeout is 2^%d nanoseconds\n",
741 timeout);
742 break;
743 case 'T':
744 carp_thresh_seconds =
745 fetchtimeout(c, "NULL", optarg, 0);
746 break;
747 case 'w':
748 do_timedog = 1;
749 break;
750 case 0:
751 lopt = longopts[longindex].name;
752 if (!strcmp(lopt, "pretimeout")) {
753 pretimeout = fetchtimeout(0, lopt, optarg, 0);
754 } else if (!strcmp(lopt, "pretimeout-action")) {
755 pretimeout_act = timeout_act_str2int(lopt,
756 optarg);
757 } else if (!strcmp(lopt, "softtimeout-action")) {
758 softtimeout_act = timeout_act_str2int(lopt,
759 optarg);
760 } else {
761 /* warnx("bad option at index %d: %s", optind,
762 argv[optind]);
763 usage();
764 */
765 }
766 break;
767 case '?':
768 default:
769 usage();
770 /* NOTREACHED */
771 }
772 }
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 struct timespec ts;
783
784 pow2ns_to_ts(timeout, &ts);
785 if (pretimeout >= (uintmax_t)ts.tv_sec) {
786 errx(EX_USAGE,
787 "pretimeout (%d) >= timeout (%d -> %ld)\n"
788 "see manual section TIMEOUT RESOLUTION",
789 pretimeout, timeout_sec, (long)ts.tv_sec);
790 }
791 }
792 }
793