1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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 __FBSDID("$FreeBSD: stable/12/usr.sbin/watchdogd/watchdogd.c 326276 2017-11-27 15:37:16Z pfg $");
38
39 #include <sys/mman.h>
40 #include <sys/param.h>
41 #include <sys/rtprio.h>
42 #include <sys/stat.h>
43 #include <sys/time.h>
44 #include <sys/sysctl.h>
45 #include <sys/watchdog.h>
46
47 #include <err.h>
48 #include <errno.h>
49 #include <fcntl.h>
50 #include <libutil.h>
51 #include <math.h>
52 #include <paths.h>
53 #include <signal.h>
54 #include <stdio.h>
55 #include <stdint.h>
56 #include <stdlib.h>
57 #include <string.h>
58 #include <strings.h>
59 #include <sysexits.h>
60 #include <syslog.h>
61 #include <unistd.h>
62
63 #include <getopt.h>
64
65 static long fetchtimeout(int opt,
66 const char *longopt, const char *myoptarg, int zero_ok);
67 static void parseargs(int, char *[]);
68 static int seconds_to_pow2ns(int);
69 static void sighandler(int);
70 static void watchdog_loop(void);
71 static int watchdog_init(void);
72 static int watchdog_onoff(int onoff);
73 static int watchdog_patpat(u_int timeout);
74 static void usage(void);
75 static int tstotv(struct timeval *tv, struct timespec *ts);
76 static int tvtohz(struct timeval *tv);
77
78 static int debugging = 0;
79 static int end_program = 0;
80 static const char *pidfile = _PATH_VARRUN "watchdogd.pid";
81 static u_int timeout = WD_TO_128SEC;
82 static u_int exit_timeout = WD_TO_NEVER;
83 static u_int pretimeout = 0;
84 static u_int timeout_sec;
85 static u_int nap = 10;
86 static int passive = 0;
87 static int is_daemon = 0;
88 static int is_dry_run = 0; /* do not arm the watchdog, only
89 report on timing of the watch
90 program */
91 static int do_timedog = 0;
92 static int do_syslog = 1;
93 static int fd = -1;
94 static int carp_thresh_seconds = -1;
95 static char *test_cmd = NULL;
96
97 static const char *getopt_shortopts;
98
99 static int pretimeout_set;
100 static int pretimeout_act;
101 static int pretimeout_act_set;
102
103 static int softtimeout_set;
104 static int softtimeout_act;
105 static int softtimeout_act_set;
106
107 static struct option longopts[] = {
108 { "debug", no_argument, &debugging, 1 },
109 { "pretimeout", required_argument, &pretimeout_set, 1 },
110 { "pretimeout-action", required_argument, &pretimeout_act_set, 1 },
111 { "softtimeout", no_argument, &softtimeout_set, 1 },
112 { "softtimeout-action", required_argument, &softtimeout_act_set, 1 },
113 { NULL, 0, NULL, 0}
114 };
115
116 /*
117 * Periodically pat the watchdog, preventing it from firing.
118 */
119 int
main(int argc,char * argv[])120 main(int argc, char *argv[])
121 {
122 struct rtprio rtp;
123 struct pidfh *pfh;
124 pid_t otherpid;
125
126 if (getuid() != 0)
127 errx(EX_SOFTWARE, "not super user");
128
129 parseargs(argc, argv);
130
131 if (do_syslog)
132 openlog("watchdogd", LOG_CONS|LOG_NDELAY|LOG_PERROR,
133 LOG_DAEMON);
134
135 rtp.type = RTP_PRIO_REALTIME;
136 rtp.prio = 0;
137 if (rtprio(RTP_SET, 0, &rtp) == -1)
138 err(EX_OSERR, "rtprio");
139
140 if (!is_dry_run && watchdog_init() == -1)
141 errx(EX_SOFTWARE, "unable to initialize watchdog");
142
143 if (is_daemon) {
144 if (watchdog_onoff(1) == -1)
145 err(EX_OSERR, "patting the dog");
146
147 pfh = pidfile_open(pidfile, 0600, &otherpid);
148 if (pfh == NULL) {
149 if (errno == EEXIST) {
150 watchdog_onoff(0);
151 errx(EX_SOFTWARE, "%s already running, pid: %d",
152 getprogname(), otherpid);
153 }
154 warn("Cannot open or create pidfile");
155 }
156
157 if (debugging == 0 && daemon(0, 0) == -1) {
158 watchdog_onoff(0);
159 pidfile_remove(pfh);
160 err(EX_OSERR, "daemon");
161 }
162
163 signal(SIGHUP, SIG_IGN);
164 signal(SIGINT, sighandler);
165 signal(SIGTERM, sighandler);
166
167 pidfile_write(pfh);
168 if (madvise(0, 0, MADV_PROTECT) != 0)
169 warn("madvise failed");
170 if (mlockall(MCL_CURRENT | MCL_FUTURE) != 0)
171 warn("mlockall failed");
172
173 watchdog_loop();
174
175 /* exiting */
176 pidfile_remove(pfh);
177 return (EX_OK);
178 } else {
179 if (passive)
180 timeout |= WD_PASSIVE;
181 else
182 timeout |= WD_ACTIVE;
183 if (watchdog_patpat(timeout) < 0)
184 err(EX_OSERR, "patting the dog");
185 return (EX_OK);
186 }
187 }
188
189 static void
pow2ns_to_ts(int pow2ns,struct timespec * ts)190 pow2ns_to_ts(int pow2ns, struct timespec *ts)
191 {
192 uint64_t ns;
193
194 ns = 1ULL << pow2ns;
195 ts->tv_sec = ns / 1000000000ULL;
196 ts->tv_nsec = ns % 1000000000ULL;
197 }
198
199 /*
200 * Convert a timeout in seconds to N where 2^N nanoseconds is close to
201 * "seconds".
202 *
203 * The kernel expects the timeouts for watchdogs in "2^N nanosecond format".
204 */
205 static u_int
parse_timeout_to_pow2ns(char opt,const char * longopt,const char * myoptarg)206 parse_timeout_to_pow2ns(char opt, const char *longopt, const char *myoptarg)
207 {
208 double a;
209 u_int rv;
210 struct timespec ts;
211 struct timeval tv;
212 int ticks;
213 char shortopt[] = "- ";
214
215 if (!longopt)
216 shortopt[1] = opt;
217
218 a = fetchtimeout(opt, longopt, myoptarg, 1);
219
220 if (a == 0)
221 rv = WD_TO_NEVER;
222 else
223 rv = seconds_to_pow2ns(a);
224 pow2ns_to_ts(rv, &ts);
225 tstotv(&tv, &ts);
226 ticks = tvtohz(&tv);
227 if (debugging) {
228 printf("Timeout for %s%s "
229 "is 2^%d nanoseconds "
230 "(in: %s sec -> out: %jd sec %ld ns -> %d ticks)\n",
231 longopt ? "-" : "", longopt ? longopt : shortopt,
232 rv,
233 myoptarg, (intmax_t)ts.tv_sec, ts.tv_nsec, ticks);
234 }
235 if (ticks <= 0) {
236 errx(1, "Timeout for %s%s is too small, please choose a higher timeout.", longopt ? "-" : "", longopt ? longopt : shortopt);
237 }
238
239 return (rv);
240 }
241
242 /*
243 * Catch signals and begin shutdown process.
244 */
245 static void
sighandler(int signum)246 sighandler(int signum)
247 {
248
249 if (signum == SIGINT || signum == SIGTERM)
250 end_program = 1;
251 }
252
253 /*
254 * Open the watchdog device.
255 */
256 static int
watchdog_init(void)257 watchdog_init(void)
258 {
259
260 if (is_dry_run)
261 return 0;
262
263 fd = open("/dev/" _PATH_WATCHDOG, O_RDWR);
264 if (fd >= 0)
265 return (0);
266 warn("Could not open watchdog device");
267 return (-1);
268 }
269
270 /*
271 * If we are doing timing, then get the time.
272 */
273 static int
watchdog_getuptime(struct timespec * tp)274 watchdog_getuptime(struct timespec *tp)
275 {
276 int error;
277
278 if (!do_timedog)
279 return 0;
280
281 error = clock_gettime(CLOCK_UPTIME_FAST, tp);
282 if (error)
283 warn("clock_gettime");
284 return (error);
285 }
286
287 static long
watchdog_check_dogfunction_time(struct timespec * tp_start,struct timespec * tp_end)288 watchdog_check_dogfunction_time(struct timespec *tp_start,
289 struct timespec *tp_end)
290 {
291 struct timeval tv_start, tv_end, tv_now, tv;
292 const char *cmd_prefix, *cmd;
293 struct timespec tp_now;
294 int sec;
295
296 if (!do_timedog)
297 return (0);
298
299 TIMESPEC_TO_TIMEVAL(&tv_start, tp_start);
300 TIMESPEC_TO_TIMEVAL(&tv_end, tp_end);
301 timersub(&tv_end, &tv_start, &tv);
302 sec = tv.tv_sec;
303 if (sec < carp_thresh_seconds)
304 return (sec);
305
306 if (test_cmd) {
307 cmd_prefix = "Watchdog program";
308 cmd = test_cmd;
309 } else {
310 cmd_prefix = "Watchdog operation";
311 cmd = "stat(\"/etc\", &sb)";
312 }
313 if (do_syslog)
314 syslog(LOG_CRIT, "%s: '%s' took too long: "
315 "%d.%06ld seconds >= %d seconds threshold",
316 cmd_prefix, cmd, sec, (long)tv.tv_usec,
317 carp_thresh_seconds);
318 else
319 warnx("%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
324 /*
325 * Adjust the sleep interval again in case syslog(3) took a non-trivial
326 * amount of time to run.
327 */
328 if (watchdog_getuptime(&tp_now))
329 return (sec);
330 TIMESPEC_TO_TIMEVAL(&tv_now, &tp_now);
331 timersub(&tv_now, &tv_start, &tv);
332 sec = tv.tv_sec;
333
334 return (sec);
335 }
336
337 /*
338 * Main program loop which is iterated every second.
339 */
340 static void
watchdog_loop(void)341 watchdog_loop(void)
342 {
343 struct timespec ts_start, ts_end;
344 struct stat sb;
345 long waited;
346 int error, failed;
347
348 while (end_program != 2) {
349 failed = 0;
350
351 error = watchdog_getuptime(&ts_start);
352 if (error) {
353 end_program = 1;
354 goto try_end;
355 }
356
357 if (test_cmd != NULL)
358 failed = system(test_cmd);
359 else
360 failed = stat("/etc", &sb);
361
362 error = watchdog_getuptime(&ts_end);
363 if (error) {
364 end_program = 1;
365 goto try_end;
366 }
367
368 if (failed == 0)
369 watchdog_patpat(timeout|WD_ACTIVE);
370
371 waited = watchdog_check_dogfunction_time(&ts_start, &ts_end);
372 if (nap - waited > 0)
373 sleep(nap - waited);
374
375 try_end:
376 if (end_program != 0) {
377 if (watchdog_onoff(0) == 0) {
378 end_program = 2;
379 } else {
380 warnx("Could not stop the watchdog, not exiting");
381 end_program = 0;
382 }
383 }
384 }
385 }
386
387 /*
388 * Reset the watchdog timer. This function must be called periodically
389 * to keep the watchdog from firing.
390 */
391 static int
watchdog_patpat(u_int t)392 watchdog_patpat(u_int t)
393 {
394
395 if (is_dry_run)
396 return 0;
397
398 return ioctl(fd, WDIOCPATPAT, &t);
399 }
400
401 /*
402 * Toggle the kernel's watchdog. This routine is used to enable and
403 * disable the watchdog.
404 */
405 static int
watchdog_onoff(int onoff)406 watchdog_onoff(int onoff)
407 {
408 int error;
409
410 /* fake successful watchdog op if a dry run */
411 if (is_dry_run)
412 return 0;
413
414 if (onoff) {
415 /*
416 * Call the WDIOC_SETSOFT regardless of softtimeout_set
417 * because we'll need to turn it off if someone had turned
418 * it on.
419 */
420 error = ioctl(fd, WDIOC_SETSOFT, &softtimeout_set);
421 if (error) {
422 warn("setting WDIOC_SETSOFT %d", softtimeout_set);
423 return (error);
424 }
425 error = watchdog_patpat((timeout|WD_ACTIVE));
426 if (error) {
427 warn("watchdog_patpat failed");
428 goto failsafe;
429 }
430 if (softtimeout_act_set) {
431 error = ioctl(fd, WDIOC_SETSOFTTIMEOUTACT,
432 &softtimeout_act);
433 if (error) {
434 warn("setting WDIOC_SETSOFTTIMEOUTACT %d",
435 softtimeout_act);
436 goto failsafe;
437 }
438 }
439 if (pretimeout_set) {
440 error = ioctl(fd, WDIOC_SETPRETIMEOUT, &pretimeout);
441 if (error) {
442 warn("setting WDIOC_SETPRETIMEOUT %d",
443 pretimeout);
444 goto failsafe;
445 }
446 }
447 if (pretimeout_act_set) {
448 error = ioctl(fd, WDIOC_SETPRETIMEOUTACT,
449 &pretimeout_act);
450 if (error) {
451 warn("setting WDIOC_SETPRETIMEOUTACT %d",
452 pretimeout_act);
453 goto failsafe;
454 }
455 }
456 /* pat one more time for good measure */
457 return watchdog_patpat((timeout|WD_ACTIVE));
458 } else {
459 return watchdog_patpat(exit_timeout);
460 }
461 failsafe:
462 watchdog_patpat(exit_timeout);
463 return (error);
464 }
465
466 /*
467 * Tell user how to use the program.
468 */
469 static void
usage(void)470 usage(void)
471 {
472 if (is_daemon)
473 fprintf(stderr, "usage:\n"
474 " watchdogd [-dnSw] [-e cmd] [-I pidfile] [-s sleep] [-t timeout]\n"
475 " [-T script_timeout] [-x exit_timeout]\n"
476 " [--debug]\n"
477 " [--pretimeout seconds] [-pretimeout-action action]\n"
478 " [--softtimeout] [-softtimeout-action action]\n"
479 );
480 else
481 fprintf(stderr, "usage: watchdog [-d] [-t timeout]\n");
482 exit(EX_USAGE);
483 }
484
485 static long
fetchtimeout(int opt,const char * longopt,const char * myoptarg,int zero_ok)486 fetchtimeout(int opt, const char *longopt, const char *myoptarg, int zero_ok)
487 {
488 const char *errstr;
489 char *p;
490 long rv;
491
492 errstr = NULL;
493 p = NULL;
494 errno = 0;
495 rv = strtol(myoptarg, &p, 0);
496 if ((p != NULL && *p != '\0') || errno != 0)
497 errstr = "is not a number";
498 if (rv < 0 || (!zero_ok && rv == 0))
499 errstr = "must be greater than zero";
500 if (errstr) {
501 if (longopt)
502 errx(EX_USAGE, "--%s argument %s", longopt, errstr);
503 else
504 errx(EX_USAGE, "-%c argument %s", opt, errstr);
505 }
506 return (rv);
507 }
508
509 struct act_tbl {
510 const char *at_act;
511 int at_value;
512 };
513
514 static const struct act_tbl act_tbl[] = {
515 { "panic", WD_SOFT_PANIC },
516 { "ddb", WD_SOFT_DDB },
517 { "log", WD_SOFT_LOG },
518 { "printf", WD_SOFT_PRINTF },
519 { NULL, 0 }
520 };
521
522 static void
timeout_act_error(const char * lopt,const char * badact)523 timeout_act_error(const char *lopt, const char *badact)
524 {
525 char *opts, *oldopts;
526 int i;
527
528 opts = NULL;
529 for (i = 0; act_tbl[i].at_act != NULL; i++) {
530 oldopts = opts;
531 if (asprintf(&opts, "%s%s%s",
532 oldopts == NULL ? "" : oldopts,
533 oldopts == NULL ? "" : ", ",
534 act_tbl[i].at_act) == -1)
535 err(EX_OSERR, "malloc");
536 free(oldopts);
537 }
538 warnx("bad --%s argument '%s' must be one of (%s).",
539 lopt, badact, opts);
540 usage();
541 }
542
543 /*
544 * Take a comma separated list of actions and or the flags
545 * together for the ioctl.
546 */
547 static int
timeout_act_str2int(const char * lopt,const char * acts)548 timeout_act_str2int(const char *lopt, const char *acts)
549 {
550 int i;
551 char *dupacts, *tofree;
552 char *o;
553 int rv = 0;
554
555 tofree = dupacts = strdup(acts);
556 if (!tofree)
557 err(EX_OSERR, "malloc");
558 while ((o = strsep(&dupacts, ",")) != NULL) {
559 for (i = 0; act_tbl[i].at_act != NULL; i++) {
560 if (!strcmp(o, act_tbl[i].at_act)) {
561 rv |= act_tbl[i].at_value;
562 break;
563 }
564 }
565 if (act_tbl[i].at_act == NULL)
566 timeout_act_error(lopt, o);
567 }
568 free(tofree);
569 return rv;
570 }
571
572 int
tstotv(struct timeval * tv,struct timespec * ts)573 tstotv(struct timeval *tv, struct timespec *ts)
574 {
575
576 tv->tv_sec = ts->tv_sec;
577 tv->tv_usec = ts->tv_nsec / 1000;
578 return 0;
579 }
580
581 /*
582 * Convert a timeval to a number of ticks.
583 * Mostly copied from the kernel.
584 */
585 int
tvtohz(struct timeval * tv)586 tvtohz(struct timeval *tv)
587 {
588 register unsigned long ticks;
589 register long sec, usec;
590 int hz;
591 size_t hzsize;
592 int error;
593 int tick;
594
595 hzsize = sizeof(hz);
596
597 error = sysctlbyname("kern.hz", &hz, &hzsize, NULL, 0);
598 if (error)
599 err(1, "sysctlbyname kern.hz");
600
601 tick = 1000000 / hz;
602
603 /*
604 * If the number of usecs in the whole seconds part of the time
605 * difference fits in a long, then the total number of usecs will
606 * fit in an unsigned long. Compute the total and convert it to
607 * ticks, rounding up and adding 1 to allow for the current tick
608 * to expire. Rounding also depends on unsigned long arithmetic
609 * to avoid overflow.
610 *
611 * Otherwise, if the number of ticks in the whole seconds part of
612 * the time difference fits in a long, then convert the parts to
613 * ticks separately and add, using similar rounding methods and
614 * overflow avoidance. This method would work in the previous
615 * case but it is slightly slower and assumes that hz is integral.
616 *
617 * Otherwise, round the time difference down to the maximum
618 * representable value.
619 *
620 * If ints have 32 bits, then the maximum value for any timeout in
621 * 10ms ticks is 248 days.
622 */
623 sec = tv->tv_sec;
624 usec = tv->tv_usec;
625 if (usec < 0) {
626 sec--;
627 usec += 1000000;
628 }
629 if (sec < 0) {
630 #ifdef DIAGNOSTIC
631 if (usec > 0) {
632 sec++;
633 usec -= 1000000;
634 }
635 printf("tvotohz: negative time difference %ld sec %ld usec\n",
636 sec, usec);
637 #endif
638 ticks = 1;
639 } else if (sec <= LONG_MAX / 1000000)
640 ticks = (sec * 1000000 + (unsigned long)usec + (tick - 1))
641 / tick + 1;
642 else if (sec <= LONG_MAX / hz)
643 ticks = sec * hz
644 + ((unsigned long)usec + (tick - 1)) / tick + 1;
645 else
646 ticks = LONG_MAX;
647 if (ticks > INT_MAX)
648 ticks = INT_MAX;
649 return ((int)ticks);
650 }
651
652 static int
seconds_to_pow2ns(int seconds)653 seconds_to_pow2ns(int seconds)
654 {
655 uint64_t power;
656 uint64_t ns;
657 uint64_t shifted;
658
659 if (seconds <= 0)
660 errx(1, "seconds %d < 0", seconds);
661 ns = ((uint64_t)seconds) * 1000000000ULL;
662 power = flsll(ns);
663 shifted = 1ULL << power;
664 if (shifted <= ns) {
665 power++;
666 }
667 if (debugging) {
668 printf("shifted %lld\n", (long long)shifted);
669 printf("seconds_to_pow2ns: seconds: %d, ns %lld, power %d\n",
670 seconds, (long long)ns, (int)power);
671 }
672 return (power);
673 }
674
675
676 /*
677 * Handle the few command line arguments supported.
678 */
679 static void
parseargs(int argc,char * argv[])680 parseargs(int argc, char *argv[])
681 {
682 struct timespec ts;
683 int longindex;
684 int c;
685 const char *lopt;
686
687 /* Get the default value of timeout_sec from the default timeout. */
688 pow2ns_to_ts(timeout, &ts);
689 timeout_sec = ts.tv_sec;
690
691 /*
692 * if we end with a 'd' aka 'watchdogd' then we are the daemon program,
693 * otherwise run as a command line utility.
694 */
695 c = strlen(argv[0]);
696 if (argv[0][c - 1] == 'd')
697 is_daemon = 1;
698
699 if (is_daemon)
700 getopt_shortopts = "I:de:ns:t:ST:wx:?";
701 else
702 getopt_shortopts = "dt:?";
703
704 while ((c = getopt_long(argc, argv, getopt_shortopts, longopts,
705 &longindex)) != -1) {
706 switch (c) {
707 case 'I':
708 pidfile = optarg;
709 break;
710 case 'd':
711 debugging = 1;
712 break;
713 case 'e':
714 test_cmd = strdup(optarg);
715 break;
716 case 'n':
717 is_dry_run = 1;
718 break;
719 #ifdef notyet
720 case 'p':
721 passive = 1;
722 break;
723 #endif
724 case 's':
725 nap = fetchtimeout(c, NULL, optarg, 0);
726 break;
727 case 'S':
728 do_syslog = 0;
729 break;
730 case 't':
731 timeout_sec = atoi(optarg);
732 timeout = parse_timeout_to_pow2ns(c, NULL, optarg);
733 if (debugging)
734 printf("Timeout is 2^%d nanoseconds\n",
735 timeout);
736 break;
737 case 'T':
738 carp_thresh_seconds =
739 fetchtimeout(c, "NULL", optarg, 0);
740 break;
741 case 'w':
742 do_timedog = 1;
743 break;
744 case 'x':
745 exit_timeout = parse_timeout_to_pow2ns(c, NULL, optarg);
746 if (exit_timeout != 0)
747 exit_timeout |= WD_ACTIVE;
748 break;
749 case 0:
750 lopt = longopts[longindex].name;
751 if (!strcmp(lopt, "pretimeout")) {
752 pretimeout = fetchtimeout(0, lopt, optarg, 0);
753 } else if (!strcmp(lopt, "pretimeout-action")) {
754 pretimeout_act = timeout_act_str2int(lopt,
755 optarg);
756 } else if (!strcmp(lopt, "softtimeout-action")) {
757 softtimeout_act = timeout_act_str2int(lopt,
758 optarg);
759 } else {
760 /* warnx("bad option at index %d: %s", optind,
761 argv[optind]);
762 usage();
763 */
764 }
765 break;
766 case '?':
767 default:
768 usage();
769 /* NOTREACHED */
770 }
771 }
772
773 if (nap > timeout_sec / 2)
774 nap = timeout_sec / 2;
775
776 if (carp_thresh_seconds == -1)
777 carp_thresh_seconds = nap;
778
779 if (argc != optind)
780 errx(EX_USAGE, "extra arguments.");
781 if (is_daemon && timeout < WD_TO_1SEC)
782 errx(EX_USAGE, "-t argument is less than one second.");
783 if (pretimeout_set) {
784 if (pretimeout >= timeout_sec) {
785 errx(EX_USAGE,
786 "pretimeout (%d) >= timeout (%d -> %ld)\n"
787 "see manual section TIMEOUT RESOLUTION",
788 pretimeout, timeout_sec, (long)ts.tv_sec);
789 }
790 }
791 }
792