FreeBSD/Linux Kernel Cross Reference
sys/kern/kern_time.c
1 /*-
2 * Copyright (c) 1982, 1986, 1989, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 4. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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 * @(#)kern_time.c 8.1 (Berkeley) 6/10/93
30 */
31
32 #include <sys/cdefs.h>
33 __FBSDID("$FreeBSD: releng/5.4/sys/kern/kern_time.c 145335 2005-04-20 19:11:07Z cvs2svn $");
34
35 #include "opt_mac.h"
36
37 #include <sys/param.h>
38 #include <sys/systm.h>
39 #include <sys/lock.h>
40 #include <sys/mutex.h>
41 #include <sys/sysproto.h>
42 #include <sys/resourcevar.h>
43 #include <sys/signalvar.h>
44 #include <sys/kernel.h>
45 #include <sys/mac.h>
46 #include <sys/syscallsubr.h>
47 #include <sys/sysent.h>
48 #include <sys/proc.h>
49 #include <sys/time.h>
50 #include <sys/timetc.h>
51 #include <sys/vnode.h>
52
53 #include <vm/vm.h>
54 #include <vm/vm_extern.h>
55
56 int tz_minuteswest;
57 int tz_dsttime;
58
59 /*
60 * Time of day and interval timer support.
61 *
62 * These routines provide the kernel entry points to get and set
63 * the time-of-day and per-process interval timers. Subroutines
64 * here provide support for adding and subtracting timeval structures
65 * and decrementing interval timers, optionally reloading the interval
66 * timers when they expire.
67 */
68
69 static int settime(struct thread *, struct timeval *);
70 static void timevalfix(struct timeval *);
71 static void no_lease_updatetime(int);
72
73 static void
74 no_lease_updatetime(deltat)
75 int deltat;
76 {
77 }
78
79 void (*lease_updatetime)(int) = no_lease_updatetime;
80
81 static int
82 settime(struct thread *td, struct timeval *tv)
83 {
84 struct timeval delta, tv1, tv2;
85 static struct timeval maxtime, laststep;
86 struct timespec ts;
87 int s;
88
89 s = splclock();
90 microtime(&tv1);
91 delta = *tv;
92 timevalsub(&delta, &tv1);
93
94 /*
95 * If the system is secure, we do not allow the time to be
96 * set to a value earlier than 1 second less than the highest
97 * time we have yet seen. The worst a miscreant can do in
98 * this circumstance is "freeze" time. He couldn't go
99 * back to the past.
100 *
101 * We similarly do not allow the clock to be stepped more
102 * than one second, nor more than once per second. This allows
103 * a miscreant to make the clock march double-time, but no worse.
104 */
105 if (securelevel_gt(td->td_ucred, 1) != 0) {
106 if (delta.tv_sec < 0 || delta.tv_usec < 0) {
107 /*
108 * Update maxtime to latest time we've seen.
109 */
110 if (tv1.tv_sec > maxtime.tv_sec)
111 maxtime = tv1;
112 tv2 = *tv;
113 timevalsub(&tv2, &maxtime);
114 if (tv2.tv_sec < -1) {
115 tv->tv_sec = maxtime.tv_sec - 1;
116 printf("Time adjustment clamped to -1 second\n");
117 }
118 } else {
119 if (tv1.tv_sec == laststep.tv_sec) {
120 splx(s);
121 return (EPERM);
122 }
123 if (delta.tv_sec > 1) {
124 tv->tv_sec = tv1.tv_sec + 1;
125 printf("Time adjustment clamped to +1 second\n");
126 }
127 laststep = *tv;
128 }
129 }
130
131 ts.tv_sec = tv->tv_sec;
132 ts.tv_nsec = tv->tv_usec * 1000;
133 mtx_lock(&Giant);
134 tc_setclock(&ts);
135 (void) splsoftclock();
136 lease_updatetime(delta.tv_sec);
137 splx(s);
138 resettodr();
139 mtx_unlock(&Giant);
140 return (0);
141 }
142
143 #ifndef _SYS_SYSPROTO_H_
144 struct clock_gettime_args {
145 clockid_t clock_id;
146 struct timespec *tp;
147 };
148 #endif
149
150 /*
151 * MPSAFE
152 */
153 /* ARGSUSED */
154 int
155 clock_gettime(struct thread *td, struct clock_gettime_args *uap)
156 {
157 struct timespec ats;
158 struct timeval sys, user;
159
160 switch (uap->clock_id) {
161 case CLOCK_REALTIME:
162 nanotime(&ats);
163 break;
164 case CLOCK_VIRTUAL:
165 mtx_lock_spin(&sched_lock);
166 calcru(td->td_proc, &user, &sys, NULL);
167 mtx_unlock_spin(&sched_lock);
168 TIMEVAL_TO_TIMESPEC(&user, &ats);
169 break;
170 case CLOCK_PROF:
171 mtx_lock_spin(&sched_lock);
172 calcru(td->td_proc, &user, &sys, NULL);
173 mtx_unlock_spin(&sched_lock);
174 timevaladd(&user, &sys);
175 TIMEVAL_TO_TIMESPEC(&user, &ats);
176 break;
177 case CLOCK_MONOTONIC:
178 nanouptime(&ats);
179 break;
180 default:
181 return (EINVAL);
182 }
183 return (copyout(&ats, uap->tp, sizeof(ats)));
184 }
185
186 #ifndef _SYS_SYSPROTO_H_
187 struct clock_settime_args {
188 clockid_t clock_id;
189 const struct timespec *tp;
190 };
191 #endif
192
193 /*
194 * MPSAFE
195 */
196 /* ARGSUSED */
197 int
198 clock_settime(struct thread *td, struct clock_settime_args *uap)
199 {
200 struct timeval atv;
201 struct timespec ats;
202 int error;
203
204 #ifdef MAC
205 error = mac_check_system_settime(td->td_ucred);
206 if (error)
207 return (error);
208 #endif
209 if ((error = suser(td)) != 0)
210 return (error);
211 if (uap->clock_id != CLOCK_REALTIME)
212 return (EINVAL);
213 if ((error = copyin(uap->tp, &ats, sizeof(ats))) != 0)
214 return (error);
215 if (ats.tv_nsec < 0 || ats.tv_nsec >= 1000000000)
216 return (EINVAL);
217 /* XXX Don't convert nsec->usec and back */
218 TIMESPEC_TO_TIMEVAL(&atv, &ats);
219 error = settime(td, &atv);
220 return (error);
221 }
222
223 #ifndef _SYS_SYSPROTO_H_
224 struct clock_getres_args {
225 clockid_t clock_id;
226 struct timespec *tp;
227 };
228 #endif
229
230 int
231 clock_getres(struct thread *td, struct clock_getres_args *uap)
232 {
233 struct timespec ts;
234
235 ts.tv_sec = 0;
236 switch (uap->clock_id) {
237 case CLOCK_REALTIME:
238 case CLOCK_MONOTONIC:
239 /*
240 * Round up the result of the division cheaply by adding 1.
241 * Rounding up is especially important if rounding down
242 * would give 0. Perfect rounding is unimportant.
243 */
244 ts.tv_nsec = 1000000000 / tc_getfrequency() + 1;
245 break;
246 case CLOCK_VIRTUAL:
247 case CLOCK_PROF:
248 /* Accurately round up here because we can do so cheaply. */
249 ts.tv_nsec = (1000000000 + hz - 1) / hz;
250 break;
251 default:
252 return (EINVAL);
253 }
254 if (uap->tp == NULL)
255 return (0);
256 return (copyout(&ts, uap->tp, sizeof(ts)));
257 }
258
259 static int nanowait;
260
261 int
262 kern_nanosleep(struct thread *td, struct timespec *rqt, struct timespec *rmt)
263 {
264 struct timespec ts, ts2, ts3;
265 struct timeval tv;
266 int error;
267
268 if (rqt->tv_nsec < 0 || rqt->tv_nsec >= 1000000000)
269 return (EINVAL);
270 if (rqt->tv_sec < 0 || (rqt->tv_sec == 0 && rqt->tv_nsec == 0))
271 return (0);
272 getnanouptime(&ts);
273 timespecadd(&ts, rqt);
274 TIMESPEC_TO_TIMEVAL(&tv, rqt);
275 for (;;) {
276 error = tsleep(&nanowait, PWAIT | PCATCH, "nanslp",
277 tvtohz(&tv));
278 getnanouptime(&ts2);
279 if (error != EWOULDBLOCK) {
280 if (error == ERESTART)
281 error = EINTR;
282 if (rmt != NULL) {
283 timespecsub(&ts, &ts2);
284 if (ts.tv_sec < 0)
285 timespecclear(&ts);
286 *rmt = ts;
287 }
288 return (error);
289 }
290 if (timespeccmp(&ts2, &ts, >=))
291 return (0);
292 ts3 = ts;
293 timespecsub(&ts3, &ts2);
294 TIMESPEC_TO_TIMEVAL(&tv, &ts3);
295 }
296 }
297
298 #ifndef _SYS_SYSPROTO_H_
299 struct nanosleep_args {
300 struct timespec *rqtp;
301 struct timespec *rmtp;
302 };
303 #endif
304
305 /*
306 * MPSAFE
307 */
308 /* ARGSUSED */
309 int
310 nanosleep(struct thread *td, struct nanosleep_args *uap)
311 {
312 struct timespec rmt, rqt;
313 int error;
314
315 error = copyin(uap->rqtp, &rqt, sizeof(rqt));
316 if (error)
317 return (error);
318
319 if (uap->rmtp &&
320 !useracc((caddr_t)uap->rmtp, sizeof(rmt), VM_PROT_WRITE))
321 return (EFAULT);
322 error = kern_nanosleep(td, &rqt, &rmt);
323 if (error && uap->rmtp) {
324 int error2;
325
326 error2 = copyout(&rmt, uap->rmtp, sizeof(rmt));
327 if (error2)
328 error = error2;
329 }
330 return (error);
331 }
332
333 #ifndef _SYS_SYSPROTO_H_
334 struct gettimeofday_args {
335 struct timeval *tp;
336 struct timezone *tzp;
337 };
338 #endif
339 /*
340 * MPSAFE
341 */
342 /* ARGSUSED */
343 int
344 gettimeofday(struct thread *td, struct gettimeofday_args *uap)
345 {
346 struct timeval atv;
347 struct timezone rtz;
348 int error = 0;
349
350 if (uap->tp) {
351 microtime(&atv);
352 error = copyout(&atv, uap->tp, sizeof (atv));
353 }
354 if (error == 0 && uap->tzp != NULL) {
355 rtz.tz_minuteswest = tz_minuteswest;
356 rtz.tz_dsttime = tz_dsttime;
357 error = copyout(&rtz, uap->tzp, sizeof (rtz));
358 }
359 return (error);
360 }
361
362 #ifndef _SYS_SYSPROTO_H_
363 struct settimeofday_args {
364 struct timeval *tv;
365 struct timezone *tzp;
366 };
367 #endif
368 /*
369 * MPSAFE
370 */
371 /* ARGSUSED */
372 int
373 settimeofday(struct thread *td, struct settimeofday_args *uap)
374 {
375 struct timeval atv;
376 struct timezone atz;
377 int error = 0;
378
379 #ifdef MAC
380 error = mac_check_system_settime(td->td_ucred);
381 if (error)
382 return (error);
383 #endif
384 if ((error = suser(td)))
385 return (error);
386 /* Verify all parameters before changing time. */
387 if (uap->tv) {
388 if ((error = copyin(uap->tv, &atv, sizeof(atv))))
389 return (error);
390 if (atv.tv_usec < 0 || atv.tv_usec >= 1000000)
391 return (EINVAL);
392 }
393 if (uap->tzp &&
394 (error = copyin(uap->tzp, &atz, sizeof(atz))))
395 return (error);
396
397 if (uap->tv && (error = settime(td, &atv)))
398 return (error);
399 if (uap->tzp) {
400 tz_minuteswest = atz.tz_minuteswest;
401 tz_dsttime = atz.tz_dsttime;
402 }
403 return (error);
404 }
405 /*
406 * Get value of an interval timer. The process virtual and
407 * profiling virtual time timers are kept in the p_stats area, since
408 * they can be swapped out. These are kept internally in the
409 * way they are specified externally: in time until they expire.
410 *
411 * The real time interval timer is kept in the process table slot
412 * for the process, and its value (it_value) is kept as an
413 * absolute time rather than as a delta, so that it is easy to keep
414 * periodic real-time signals from drifting.
415 *
416 * Virtual time timers are processed in the hardclock() routine of
417 * kern_clock.c. The real time timer is processed by a timeout
418 * routine, called from the softclock() routine. Since a callout
419 * may be delayed in real time due to interrupt processing in the system,
420 * it is possible for the real time timeout routine (realitexpire, given below),
421 * to be delayed in real time past when it is supposed to occur. It
422 * does not suffice, therefore, to reload the real timer .it_value from the
423 * real time timers .it_interval. Rather, we compute the next time in
424 * absolute time the timer should go off.
425 */
426 #ifndef _SYS_SYSPROTO_H_
427 struct getitimer_args {
428 u_int which;
429 struct itimerval *itv;
430 };
431 #endif
432 /*
433 * MPSAFE
434 */
435 int
436 getitimer(struct thread *td, struct getitimer_args *uap)
437 {
438 struct proc *p = td->td_proc;
439 struct timeval ctv;
440 struct itimerval aitv;
441
442 if (uap->which > ITIMER_PROF)
443 return (EINVAL);
444
445 if (uap->which == ITIMER_REAL) {
446 /*
447 * Convert from absolute to relative time in .it_value
448 * part of real time timer. If time for real time timer
449 * has passed return 0, else return difference between
450 * current time and time for the timer to go off.
451 */
452 PROC_LOCK(p);
453 aitv = p->p_realtimer;
454 PROC_UNLOCK(p);
455 if (timevalisset(&aitv.it_value)) {
456 getmicrouptime(&ctv);
457 if (timevalcmp(&aitv.it_value, &ctv, <))
458 timevalclear(&aitv.it_value);
459 else
460 timevalsub(&aitv.it_value, &ctv);
461 }
462 } else {
463 mtx_lock_spin(&sched_lock);
464 aitv = p->p_stats->p_timer[uap->which];
465 mtx_unlock_spin(&sched_lock);
466 }
467 return (copyout(&aitv, uap->itv, sizeof (struct itimerval)));
468 }
469
470 #ifndef _SYS_SYSPROTO_H_
471 struct setitimer_args {
472 u_int which;
473 struct itimerval *itv, *oitv;
474 };
475 #endif
476 /*
477 * MPSAFE
478 */
479 int
480 setitimer(struct thread *td, struct setitimer_args *uap)
481 {
482 struct proc *p = td->td_proc;
483 struct itimerval aitv, oitv;
484 struct timeval ctv;
485 int error;
486
487 if (uap->itv == NULL) {
488 uap->itv = uap->oitv;
489 return (getitimer(td, (struct getitimer_args *)uap));
490 }
491
492 if (uap->which > ITIMER_PROF)
493 return (EINVAL);
494 if ((error = copyin(uap->itv, &aitv, sizeof(struct itimerval))))
495 return (error);
496 if (itimerfix(&aitv.it_value))
497 return (EINVAL);
498 if (!timevalisset(&aitv.it_value))
499 timevalclear(&aitv.it_interval);
500 else if (itimerfix(&aitv.it_interval))
501 return (EINVAL);
502
503 if (uap->which == ITIMER_REAL) {
504 PROC_LOCK(p);
505 if (timevalisset(&p->p_realtimer.it_value))
506 callout_stop(&p->p_itcallout);
507 getmicrouptime(&ctv);
508 if (timevalisset(&aitv.it_value)) {
509 callout_reset(&p->p_itcallout, tvtohz(&aitv.it_value),
510 realitexpire, p);
511 timevaladd(&aitv.it_value, &ctv);
512 }
513 oitv = p->p_realtimer;
514 p->p_realtimer = aitv;
515 PROC_UNLOCK(p);
516 if (timevalisset(&oitv.it_value)) {
517 if (timevalcmp(&oitv.it_value, &ctv, <))
518 timevalclear(&oitv.it_value);
519 else
520 timevalsub(&oitv.it_value, &ctv);
521 }
522 } else {
523 mtx_lock_spin(&sched_lock);
524 oitv = p->p_stats->p_timer[uap->which];
525 p->p_stats->p_timer[uap->which] = aitv;
526 mtx_unlock_spin(&sched_lock);
527 }
528 if (uap->oitv == NULL)
529 return (0);
530 return (copyout(&oitv, uap->oitv, sizeof(struct itimerval)));
531 }
532
533 /*
534 * Real interval timer expired:
535 * send process whose timer expired an alarm signal.
536 * If time is not set up to reload, then just return.
537 * Else compute next time timer should go off which is > current time.
538 * This is where delay in processing this timeout causes multiple
539 * SIGALRM calls to be compressed into one.
540 * tvtohz() always adds 1 to allow for the time until the next clock
541 * interrupt being strictly less than 1 clock tick, but we don't want
542 * that here since we want to appear to be in sync with the clock
543 * interrupt even when we're delayed.
544 */
545 void
546 realitexpire(void *arg)
547 {
548 struct proc *p;
549 struct timeval ctv, ntv;
550
551 p = (struct proc *)arg;
552 PROC_LOCK(p);
553 psignal(p, SIGALRM);
554 if (!timevalisset(&p->p_realtimer.it_interval)) {
555 timevalclear(&p->p_realtimer.it_value);
556 if (p->p_flag & P_WEXIT)
557 wakeup(&p->p_itcallout);
558 PROC_UNLOCK(p);
559 return;
560 }
561 for (;;) {
562 timevaladd(&p->p_realtimer.it_value,
563 &p->p_realtimer.it_interval);
564 getmicrouptime(&ctv);
565 if (timevalcmp(&p->p_realtimer.it_value, &ctv, >)) {
566 ntv = p->p_realtimer.it_value;
567 timevalsub(&ntv, &ctv);
568 callout_reset(&p->p_itcallout, tvtohz(&ntv) - 1,
569 realitexpire, p);
570 PROC_UNLOCK(p);
571 return;
572 }
573 }
574 /*NOTREACHED*/
575 }
576
577 /*
578 * Check that a proposed value to load into the .it_value or
579 * .it_interval part of an interval timer is acceptable, and
580 * fix it to have at least minimal value (i.e. if it is less
581 * than the resolution of the clock, round it up.)
582 */
583 int
584 itimerfix(struct timeval *tv)
585 {
586
587 if (tv->tv_sec < 0 || tv->tv_sec > 100000000 ||
588 tv->tv_usec < 0 || tv->tv_usec >= 1000000)
589 return (EINVAL);
590 if (tv->tv_sec == 0 && tv->tv_usec != 0 && tv->tv_usec < tick)
591 tv->tv_usec = tick;
592 return (0);
593 }
594
595 /*
596 * Decrement an interval timer by a specified number
597 * of microseconds, which must be less than a second,
598 * i.e. < 1000000. If the timer expires, then reload
599 * it. In this case, carry over (usec - old value) to
600 * reduce the value reloaded into the timer so that
601 * the timer does not drift. This routine assumes
602 * that it is called in a context where the timers
603 * on which it is operating cannot change in value.
604 */
605 int
606 itimerdecr(struct itimerval *itp, int usec)
607 {
608
609 if (itp->it_value.tv_usec < usec) {
610 if (itp->it_value.tv_sec == 0) {
611 /* expired, and already in next interval */
612 usec -= itp->it_value.tv_usec;
613 goto expire;
614 }
615 itp->it_value.tv_usec += 1000000;
616 itp->it_value.tv_sec--;
617 }
618 itp->it_value.tv_usec -= usec;
619 usec = 0;
620 if (timevalisset(&itp->it_value))
621 return (1);
622 /* expired, exactly at end of interval */
623 expire:
624 if (timevalisset(&itp->it_interval)) {
625 itp->it_value = itp->it_interval;
626 itp->it_value.tv_usec -= usec;
627 if (itp->it_value.tv_usec < 0) {
628 itp->it_value.tv_usec += 1000000;
629 itp->it_value.tv_sec--;
630 }
631 } else
632 itp->it_value.tv_usec = 0; /* sec is already 0 */
633 return (0);
634 }
635
636 /*
637 * Add and subtract routines for timevals.
638 * N.B.: subtract routine doesn't deal with
639 * results which are before the beginning,
640 * it just gets very confused in this case.
641 * Caveat emptor.
642 */
643 void
644 timevaladd(struct timeval *t1, const struct timeval *t2)
645 {
646
647 t1->tv_sec += t2->tv_sec;
648 t1->tv_usec += t2->tv_usec;
649 timevalfix(t1);
650 }
651
652 void
653 timevalsub(struct timeval *t1, const struct timeval *t2)
654 {
655
656 t1->tv_sec -= t2->tv_sec;
657 t1->tv_usec -= t2->tv_usec;
658 timevalfix(t1);
659 }
660
661 static void
662 timevalfix(struct timeval *t1)
663 {
664
665 if (t1->tv_usec < 0) {
666 t1->tv_sec--;
667 t1->tv_usec += 1000000;
668 }
669 if (t1->tv_usec >= 1000000) {
670 t1->tv_sec++;
671 t1->tv_usec -= 1000000;
672 }
673 }
674
675 /*
676 * ratecheck(): simple time-based rate-limit checking.
677 */
678 int
679 ratecheck(struct timeval *lasttime, const struct timeval *mininterval)
680 {
681 struct timeval tv, delta;
682 int rv = 0;
683
684 getmicrouptime(&tv); /* NB: 10ms precision */
685 delta = tv;
686 timevalsub(&delta, lasttime);
687
688 /*
689 * check for 0,0 is so that the message will be seen at least once,
690 * even if interval is huge.
691 */
692 if (timevalcmp(&delta, mininterval, >=) ||
693 (lasttime->tv_sec == 0 && lasttime->tv_usec == 0)) {
694 *lasttime = tv;
695 rv = 1;
696 }
697
698 return (rv);
699 }
700
701 /*
702 * ppsratecheck(): packets (or events) per second limitation.
703 *
704 * Return 0 if the limit is to be enforced (e.g. the caller
705 * should drop a packet because of the rate limitation).
706 *
707 * maxpps of 0 always causes zero to be returned. maxpps of -1
708 * always causes 1 to be returned; this effectively defeats rate
709 * limiting.
710 *
711 * Note that we maintain the struct timeval for compatibility
712 * with other bsd systems. We reuse the storage and just monitor
713 * clock ticks for minimal overhead.
714 */
715 int
716 ppsratecheck(struct timeval *lasttime, int *curpps, int maxpps)
717 {
718 int now;
719
720 /*
721 * Reset the last time and counter if this is the first call
722 * or more than a second has passed since the last update of
723 * lasttime.
724 */
725 now = ticks;
726 if (lasttime->tv_sec == 0 || (u_int)(now - lasttime->tv_sec) >= hz) {
727 lasttime->tv_sec = now;
728 *curpps = 1;
729 return (maxpps != 0);
730 } else {
731 (*curpps)++; /* NB: ignore potential overflow */
732 return (maxpps < 0 || *curpps < maxpps);
733 }
734 }
Cache object: 674e62dfa51b3883cab27b26e382bc12
|