1 /* $NetBSD: linux_time.c,v 1.14 2006/05/14 03:40:54 christos Exp $ */
2
3 /*-
4 * SPDX-License-Identifier: BSD-2-Clause-NetBSD
5 *
6 * Copyright (c) 2001 The NetBSD Foundation, Inc.
7 * All rights reserved.
8 *
9 * This code is derived from software contributed to The NetBSD Foundation
10 * by Emmanuel Dreyfus.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31 * POSSIBILITY OF SUCH DAMAGE.
32 */
33
34 #include <sys/cdefs.h>
35 __FBSDID("$FreeBSD$");
36 #if 0
37 __KERNEL_RCSID(0, "$NetBSD: linux_time.c,v 1.14 2006/05/14 03:40:54 christos Exp $");
38 #endif
39
40 #include "opt_compat.h"
41
42 #include <sys/param.h>
43 #include <sys/kernel.h>
44 #include <sys/lock.h>
45 #include <sys/ucred.h>
46 #include <sys/limits.h>
47 #include <sys/mount.h>
48 #include <sys/mutex.h>
49 #include <sys/resourcevar.h>
50 #include <sys/sdt.h>
51 #include <sys/signal.h>
52 #include <sys/stdint.h>
53 #include <sys/syscallsubr.h>
54 #include <sys/sysproto.h>
55 #include <sys/time.h>
56 #include <sys/systm.h>
57 #include <sys/proc.h>
58
59 #ifdef COMPAT_LINUX32
60 #include <machine/../linux32/linux.h>
61 #include <machine/../linux32/linux32_proto.h>
62 #else
63 #include <machine/../linux/linux.h>
64 #include <machine/../linux/linux_proto.h>
65 #endif
66
67 #include <compat/linux/linux_dtrace.h>
68 #include <compat/linux/linux_misc.h>
69 #include <compat/linux/linux_timer.h>
70 #include <compat/linux/linux_util.h>
71
72 /* DTrace init */
73 LIN_SDT_PROVIDER_DECLARE(LINUX_DTRACE);
74
75 /**
76 * DTrace probes in this module.
77 */
78 LIN_SDT_PROBE_DEFINE1(time, linux_to_native_clockid, unsupported_clockid,
79 "clockid_t");
80 LIN_SDT_PROBE_DEFINE1(time, linux_to_native_clockid, unknown_clockid,
81 "clockid_t");
82 LIN_SDT_PROBE_DEFINE1(time, linux_common_clock_gettime, conversion_error, "int");
83 LIN_SDT_PROBE_DEFINE1(time, linux_clock_gettime, gettime_error, "int");
84 LIN_SDT_PROBE_DEFINE1(time, linux_clock_gettime, copyout_error, "int");
85 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
86 LIN_SDT_PROBE_DEFINE1(time, linux_clock_gettime64, gettime_error, "int");
87 LIN_SDT_PROBE_DEFINE1(time, linux_clock_gettime64, copyout_error, "int");
88 #endif
89 LIN_SDT_PROBE_DEFINE1(time, linux_clock_settime, conversion_error, "int");
90 LIN_SDT_PROBE_DEFINE1(time, linux_common_clock_settime, settime_error, "int");
91 LIN_SDT_PROBE_DEFINE1(time, linux_common_clock_settime, conversion_error, "int");
92 LIN_SDT_PROBE_DEFINE1(time, linux_clock_settime, copyin_error, "int");
93 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
94 LIN_SDT_PROBE_DEFINE1(time, linux_clock_settime64, conversion_error, "int");
95 LIN_SDT_PROBE_DEFINE1(time, linux_clock_settime64, copyin_error, "int");
96 #endif
97 LIN_SDT_PROBE_DEFINE0(time, linux_common_clock_getres, nullcall);
98 LIN_SDT_PROBE_DEFINE1(time, linux_common_clock_getres, conversion_error, "int");
99 LIN_SDT_PROBE_DEFINE1(time, linux_common_clock_getres, getres_error, "int");
100 LIN_SDT_PROBE_DEFINE1(time, linux_clock_getres, copyout_error, "int");
101 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
102 LIN_SDT_PROBE_DEFINE1(time, linux_clock_getres_time64, copyout_error, "int");
103 #endif
104 LIN_SDT_PROBE_DEFINE1(time, linux_nanosleep, copyout_error, "int");
105 LIN_SDT_PROBE_DEFINE1(time, linux_nanosleep, copyin_error, "int");
106 LIN_SDT_PROBE_DEFINE1(time, linux_clock_nanosleep, copyout_error, "int");
107 LIN_SDT_PROBE_DEFINE1(time, linux_clock_nanosleep, copyin_error, "int");
108 LIN_SDT_PROBE_DEFINE1(time, linux_common_clock_nanosleep, unsupported_flags, "int");
109 LIN_SDT_PROBE_DEFINE1(time, linux_common_clock_nanosleep, unsupported_clockid, "int");
110 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
111 LIN_SDT_PROBE_DEFINE1(time, linux_clock_nanosleep_time64, copyout_error, "int");
112 LIN_SDT_PROBE_DEFINE1(time, linux_clock_nanosleep_time64, copyin_error, "int");
113 #endif
114
115 static int linux_common_clock_gettime(struct thread *, clockid_t,
116 struct timespec *);
117 static int linux_common_clock_settime(struct thread *, clockid_t,
118 struct timespec *);
119 static int linux_common_clock_getres(struct thread *, clockid_t,
120 struct timespec *);
121 static int linux_common_clock_nanosleep(struct thread *, clockid_t,
122 l_int, struct timespec *, struct timespec *);
123
124 int
125 native_to_linux_timespec(struct l_timespec *ltp, struct timespec *ntp)
126 {
127
128 #ifdef COMPAT_LINUX32
129 if (ntp->tv_sec > INT_MAX || ntp->tv_sec < INT_MIN)
130 return (EOVERFLOW);
131 #endif
132 ltp->tv_sec = ntp->tv_sec;
133 ltp->tv_nsec = ntp->tv_nsec;
134
135 return (0);
136 }
137
138 int
139 linux_to_native_timespec(struct timespec *ntp, struct l_timespec *ltp)
140 {
141
142 if (!timespecvalid_interval(ltp))
143 return (EINVAL);
144 ntp->tv_sec = ltp->tv_sec;
145 ntp->tv_nsec = ltp->tv_nsec;
146
147 return (0);
148 }
149
150 int
151 linux_put_timespec(struct timespec *ntp, struct l_timespec *ltp)
152 {
153 struct l_timespec lts;
154 int error;
155
156 error = native_to_linux_timespec(<s, ntp);
157 if (error != 0)
158 return (error);
159 return (copyout(<s, ltp, sizeof(lts)));
160 }
161
162 int
163 linux_get_timespec(struct timespec *ntp, const struct l_timespec *ultp)
164 {
165 struct l_timespec lts;
166 int error;
167
168 error = copyin(ultp, <s, sizeof(lts));
169 if (error != 0)
170 return (error);
171 return (linux_to_native_timespec(ntp, <s));
172 }
173
174 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
175 int
176 native_to_linux_timespec64(struct l_timespec64 *ltp64, struct timespec *ntp)
177 {
178
179 ltp64->tv_sec = ntp->tv_sec;
180 ltp64->tv_nsec = ntp->tv_nsec;
181
182 return (0);
183 }
184
185 int
186 linux_to_native_timespec64(struct timespec *ntp, struct l_timespec64 *ltp64)
187 {
188
189 #if defined(__i386__)
190 /* i386 time_t is still 32-bit */
191 if (ltp64->tv_sec > INT_MAX || ltp64->tv_sec < INT_MIN)
192 return (EOVERFLOW);
193 #endif
194 /* Zero out the padding in compat mode. */
195 ntp->tv_nsec = ltp64->tv_nsec & 0xFFFFFFFFUL;
196 ntp->tv_sec = ltp64->tv_sec;
197
198 if (!timespecvalid_interval(ntp))
199 return (EINVAL);
200
201 return (0);
202 }
203
204 int
205 linux_put_timespec64(struct timespec *ntp, struct l_timespec64 *ltp)
206 {
207 struct l_timespec64 lts;
208 int error;
209
210 error = native_to_linux_timespec64(<s, ntp);
211 if (error != 0)
212 return (error);
213 return (copyout(<s, ltp, sizeof(lts)));
214 }
215
216 int
217 linux_get_timespec64(struct timespec *ntp, const struct l_timespec64 *ultp)
218 {
219 struct l_timespec64 lts;
220 int error;
221
222 error = copyin(ultp, <s, sizeof(lts));
223 if (error != 0)
224 return (error);
225 return (linux_to_native_timespec64(ntp, <s));
226 }
227 #endif
228
229 int
230 native_to_linux_itimerspec(struct l_itimerspec *ltp, struct itimerspec *ntp)
231 {
232 int error;
233
234 error = native_to_linux_timespec(<p->it_interval, &ntp->it_interval);
235 if (error == 0)
236 error = native_to_linux_timespec(<p->it_value, &ntp->it_value);
237 return (error);
238 }
239
240 int
241 linux_to_native_itimerspec(struct itimerspec *ntp, struct l_itimerspec *ltp)
242 {
243 int error;
244
245 error = linux_to_native_timespec(&ntp->it_interval, <p->it_interval);
246 if (error == 0)
247 error = linux_to_native_timespec(&ntp->it_value, <p->it_value);
248 return (error);
249 }
250
251 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
252 int
253 linux_to_native_itimerspec64(struct itimerspec *ntp, struct l_itimerspec64 *ltp)
254 {
255 int error;
256
257 error = linux_to_native_timespec64(&ntp->it_interval, <p->it_interval);
258 if (error == 0)
259 error = linux_to_native_timespec64(&ntp->it_value, <p->it_value);
260 return (error);
261 }
262
263 int
264 native_to_linux_itimerspec64(struct l_itimerspec64 *ltp, struct itimerspec *ntp)
265 {
266 int error;
267
268 error = native_to_linux_timespec64(<p->it_interval, &ntp->it_interval);
269 if (error == 0)
270 error = native_to_linux_timespec64(<p->it_value, &ntp->it_value);
271 return (error);
272 }
273 #endif
274
275 int
276 linux_to_native_clockid(clockid_t *n, clockid_t l)
277 {
278
279 if (l < 0) {
280 /* cpu-clock */
281 if (LINUX_CPUCLOCK_WHICH(l) == LINUX_CLOCKFD) {
282 LIN_SDT_PROBE1(time, linux_to_native_clockid,
283 unsupported_clockid, l);
284 return (ENOTSUP);
285 }
286 if ((l & LINUX_CLOCKFD_MASK) == LINUX_CLOCKFD_MASK)
287 return (EINVAL);
288
289 if (LINUX_CPUCLOCK_PERTHREAD(l))
290 *n = CLOCK_THREAD_CPUTIME_ID;
291 else
292 *n = CLOCK_PROCESS_CPUTIME_ID;
293 return (0);
294 }
295
296 switch (l) {
297 case LINUX_CLOCK_REALTIME:
298 *n = CLOCK_REALTIME;
299 break;
300 case LINUX_CLOCK_MONOTONIC:
301 *n = CLOCK_MONOTONIC;
302 break;
303 case LINUX_CLOCK_PROCESS_CPUTIME_ID:
304 *n = CLOCK_PROCESS_CPUTIME_ID;
305 break;
306 case LINUX_CLOCK_THREAD_CPUTIME_ID:
307 *n = CLOCK_THREAD_CPUTIME_ID;
308 break;
309 case LINUX_CLOCK_REALTIME_COARSE:
310 *n = CLOCK_REALTIME_FAST;
311 break;
312 case LINUX_CLOCK_MONOTONIC_COARSE:
313 case LINUX_CLOCK_MONOTONIC_RAW:
314 *n = CLOCK_MONOTONIC_FAST;
315 break;
316 case LINUX_CLOCK_BOOTTIME:
317 *n = CLOCK_UPTIME;
318 break;
319 case LINUX_CLOCK_REALTIME_ALARM:
320 case LINUX_CLOCK_BOOTTIME_ALARM:
321 case LINUX_CLOCK_SGI_CYCLE:
322 case LINUX_CLOCK_TAI:
323 LIN_SDT_PROBE1(time, linux_to_native_clockid,
324 unsupported_clockid, l);
325 return (ENOTSUP);
326 default:
327 LIN_SDT_PROBE1(time, linux_to_native_clockid,
328 unknown_clockid, l);
329 return (ENOTSUP);
330 }
331
332 return (0);
333 }
334
335 int
336 linux_to_native_timerflags(int *nflags, int flags)
337 {
338
339 if (flags & ~LINUX_TIMER_ABSTIME)
340 return (EINVAL);
341 *nflags = 0;
342 if (flags & LINUX_TIMER_ABSTIME)
343 *nflags |= TIMER_ABSTIME;
344 return (0);
345 }
346
347 static int
348 linux_common_clock_gettime(struct thread *td, clockid_t which,
349 struct timespec *tp)
350 {
351 struct rusage ru;
352 struct thread *targettd;
353 struct proc *p;
354 int error, clockwhich;
355 clockid_t nwhich;
356 pid_t pid;
357 lwpid_t tid;
358
359 error = linux_to_native_clockid(&nwhich, which);
360 if (error != 0) {
361 linux_msg(curthread,
362 "unsupported clock_gettime clockid %d", which);
363 LIN_SDT_PROBE1(time, linux_common_clock_gettime,
364 conversion_error, error);
365 return (error);
366 }
367
368 switch (nwhich) {
369 case CLOCK_PROCESS_CPUTIME_ID:
370 if (which < 0) {
371 clockwhich = LINUX_CPUCLOCK_WHICH(which);
372 pid = LINUX_CPUCLOCK_ID(which);
373 } else {
374 clockwhich = LINUX_CPUCLOCK_SCHED;
375 pid = 0;
376 }
377 if (pid == 0) {
378 p = td->td_proc;
379 PROC_LOCK(p);
380 } else {
381 error = pget(pid, PGET_CANSEE, &p);
382 if (error != 0)
383 return (EINVAL);
384 }
385 switch (clockwhich) {
386 case LINUX_CPUCLOCK_PROF:
387 PROC_STATLOCK(p);
388 calcru(p, &ru.ru_utime, &ru.ru_stime);
389 PROC_STATUNLOCK(p);
390 PROC_UNLOCK(p);
391 timevaladd(&ru.ru_utime, &ru.ru_stime);
392 TIMEVAL_TO_TIMESPEC(&ru.ru_utime, tp);
393 break;
394 case LINUX_CPUCLOCK_VIRT:
395 PROC_STATLOCK(p);
396 calcru(p, &ru.ru_utime, &ru.ru_stime);
397 PROC_STATUNLOCK(p);
398 PROC_UNLOCK(p);
399 TIMEVAL_TO_TIMESPEC(&ru.ru_utime, tp);
400 break;
401 case LINUX_CPUCLOCK_SCHED:
402 kern_process_cputime(p, tp);
403 PROC_UNLOCK(p);
404 break;
405 default:
406 PROC_UNLOCK(p);
407 return (EINVAL);
408 }
409
410 break;
411
412 case CLOCK_THREAD_CPUTIME_ID:
413 if (which < 0) {
414 clockwhich = LINUX_CPUCLOCK_WHICH(which);
415 tid = LINUX_CPUCLOCK_ID(which);
416 } else {
417 clockwhich = LINUX_CPUCLOCK_SCHED;
418 tid = 0;
419 }
420 p = td->td_proc;
421 if (tid == 0) {
422 targettd = td;
423 PROC_LOCK(p);
424 } else {
425 targettd = linux_tdfind(td, tid, p->p_pid);
426 if (targettd == NULL)
427 return (EINVAL);
428 }
429 switch (clockwhich) {
430 case LINUX_CPUCLOCK_PROF:
431 PROC_STATLOCK(p);
432 thread_lock(targettd);
433 rufetchtd(targettd, &ru);
434 thread_unlock(targettd);
435 PROC_STATUNLOCK(p);
436 PROC_UNLOCK(p);
437 timevaladd(&ru.ru_utime, &ru.ru_stime);
438 TIMEVAL_TO_TIMESPEC(&ru.ru_utime, tp);
439 break;
440 case LINUX_CPUCLOCK_VIRT:
441 PROC_STATLOCK(p);
442 thread_lock(targettd);
443 rufetchtd(targettd, &ru);
444 thread_unlock(targettd);
445 PROC_STATUNLOCK(p);
446 PROC_UNLOCK(p);
447 TIMEVAL_TO_TIMESPEC(&ru.ru_utime, tp);
448 break;
449 case LINUX_CPUCLOCK_SCHED:
450 if (td == targettd)
451 targettd = NULL;
452 kern_thread_cputime(targettd, tp);
453 PROC_UNLOCK(p);
454 break;
455 default:
456 PROC_UNLOCK(p);
457 return (EINVAL);
458 }
459 break;
460
461 default:
462 error = kern_clock_gettime(td, nwhich, tp);
463 break;
464 }
465
466 return (error);
467 }
468
469 int
470 linux_clock_gettime(struct thread *td, struct linux_clock_gettime_args *args)
471 {
472 struct timespec tp;
473 int error;
474
475 error = linux_common_clock_gettime(td, args->which, &tp);
476 if (error != 0) {
477 LIN_SDT_PROBE1(time, linux_clock_gettime, gettime_error, error);
478 return (error);
479 }
480 error = linux_put_timespec(&tp, args->tp);
481 if (error != 0)
482 LIN_SDT_PROBE1(time, linux_clock_gettime, copyout_error, error);
483
484 return (error);
485 }
486
487 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
488 int
489 linux_clock_gettime64(struct thread *td, struct linux_clock_gettime64_args *args)
490 {
491 struct timespec tp;
492 int error;
493
494 error = linux_common_clock_gettime(td, args->which, &tp);
495 if (error != 0) {
496 LIN_SDT_PROBE1(time, linux_clock_gettime64, gettime_error, error);
497 return (error);
498 }
499 error = linux_put_timespec64(&tp, args->tp);
500 if (error != 0)
501 LIN_SDT_PROBE1(time, linux_clock_gettime64, copyout_error, error);
502
503 return (error);
504 }
505 #endif
506
507 static int
508 linux_common_clock_settime(struct thread *td, clockid_t which,
509 struct timespec *ts)
510 {
511 int error;
512 clockid_t nwhich;
513
514 error = linux_to_native_clockid(&nwhich, which);
515 if (error != 0) {
516 linux_msg(curthread,
517 "unsupported clock_settime clockid %d", which);
518 LIN_SDT_PROBE1(time, linux_common_clock_settime, conversion_error,
519 error);
520 return (error);
521 }
522
523 error = kern_clock_settime(td, nwhich, ts);
524 if (error != 0)
525 LIN_SDT_PROBE1(time, linux_common_clock_settime,
526 settime_error, error);
527
528 return (error);
529 }
530
531 int
532 linux_clock_settime(struct thread *td, struct linux_clock_settime_args *args)
533 {
534 struct timespec ts;
535 int error;
536
537 error = linux_get_timespec(&ts, args->tp);
538 if (error != 0) {
539 LIN_SDT_PROBE1(time, linux_clock_settime, copyin_error, error);
540 return (error);
541 }
542 return (linux_common_clock_settime(td, args->which, &ts));
543 }
544
545 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
546 int
547 linux_clock_settime64(struct thread *td, struct linux_clock_settime64_args *args)
548 {
549 struct timespec ts;
550 int error;
551
552 error = linux_get_timespec64(&ts, args->tp);
553 if (error != 0) {
554 LIN_SDT_PROBE1(time, linux_clock_settime64, copyin_error, error);
555 return (error);
556 }
557 return (linux_common_clock_settime(td, args->which, &ts));
558 }
559 #endif
560
561 static int
562 linux_common_clock_getres(struct thread *td, clockid_t which,
563 struct timespec *ts)
564 {
565 struct proc *p;
566 int error, clockwhich;
567 clockid_t nwhich;
568 pid_t pid;
569 lwpid_t tid;
570
571 error = linux_to_native_clockid(&nwhich, which);
572 if (error != 0) {
573 linux_msg(curthread,
574 "unsupported clock_getres clockid %d", which);
575 LIN_SDT_PROBE1(time, linux_common_clock_getres,
576 conversion_error, error);
577 return (error);
578 }
579
580 /*
581 * Check user supplied clock id in case of per-process
582 * or thread-specific cpu-time clock.
583 */
584 if (which < 0) {
585 switch (nwhich) {
586 case CLOCK_THREAD_CPUTIME_ID:
587 tid = LINUX_CPUCLOCK_ID(which);
588 if (tid != 0) {
589 p = td->td_proc;
590 if (linux_tdfind(td, tid, p->p_pid) == NULL)
591 return (EINVAL);
592 PROC_UNLOCK(p);
593 }
594 break;
595 case CLOCK_PROCESS_CPUTIME_ID:
596 pid = LINUX_CPUCLOCK_ID(which);
597 if (pid != 0) {
598 error = pget(pid, PGET_CANSEE, &p);
599 if (error != 0)
600 return (EINVAL);
601 PROC_UNLOCK(p);
602 }
603 break;
604 }
605 }
606
607 if (ts == NULL) {
608 LIN_SDT_PROBE0(time, linux_common_clock_getres, nullcall);
609 return (0);
610 }
611
612 switch (nwhich) {
613 case CLOCK_THREAD_CPUTIME_ID:
614 case CLOCK_PROCESS_CPUTIME_ID:
615 clockwhich = LINUX_CPUCLOCK_WHICH(which);
616 /*
617 * In both cases (when the clock id obtained by a call to
618 * clock_getcpuclockid() or using the clock
619 * ID CLOCK_PROCESS_CPUTIME_ID Linux hardcodes precision
620 * of clock. The same for the CLOCK_THREAD_CPUTIME_ID clock.
621 *
622 * See Linux posix_cpu_clock_getres() implementation.
623 */
624 if (which > 0 || clockwhich == LINUX_CPUCLOCK_SCHED) {
625 ts->tv_sec = 0;
626 ts->tv_nsec = 1;
627 goto out;
628 }
629
630 switch (clockwhich) {
631 case LINUX_CPUCLOCK_PROF:
632 nwhich = CLOCK_PROF;
633 break;
634 case LINUX_CPUCLOCK_VIRT:
635 nwhich = CLOCK_VIRTUAL;
636 break;
637 default:
638 return (EINVAL);
639 }
640 break;
641
642 default:
643 break;
644 }
645 error = kern_clock_getres(td, nwhich, ts);
646 if (error != 0) {
647 LIN_SDT_PROBE1(time, linux_common_clock_getres,
648 getres_error, error);
649 return (error);
650 }
651
652 out:
653 return (error);
654 }
655
656 int
657 linux_clock_getres(struct thread *td,
658 struct linux_clock_getres_args *args)
659 {
660 struct timespec ts;
661 int error;
662
663 error = linux_common_clock_getres(td, args->which, &ts);
664 if (error != 0 || args->tp == NULL)
665 return (error);
666 error = linux_put_timespec(&ts, args->tp);
667 if (error != 0)
668 LIN_SDT_PROBE1(time, linux_clock_getres,
669 copyout_error, error);
670 return (error);
671 }
672
673 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
674 int
675 linux_clock_getres_time64(struct thread *td,
676 struct linux_clock_getres_time64_args *args)
677 {
678 struct timespec ts;
679 int error;
680
681 error = linux_common_clock_getres(td, args->which, &ts);
682 if (error != 0 || args->tp == NULL)
683 return (error);
684 error = linux_put_timespec64(&ts, args->tp);
685 if (error != 0)
686 LIN_SDT_PROBE1(time, linux_clock_getres_time64,
687 copyout_error, error);
688 return (error);
689 }
690 #endif
691
692 int
693 linux_nanosleep(struct thread *td, struct linux_nanosleep_args *args)
694 {
695 struct timespec *rmtp;
696 struct timespec rqts, rmts;
697 int error, error2;
698
699 error = linux_get_timespec(&rqts, args->rqtp);
700 if (error != 0) {
701 LIN_SDT_PROBE1(time, linux_nanosleep, copyin_error, error);
702 return (error);
703 }
704 if (args->rmtp != NULL)
705 rmtp = &rmts;
706 else
707 rmtp = NULL;
708
709 error = kern_nanosleep(td, &rqts, rmtp);
710 if (error == EINTR && args->rmtp != NULL) {
711 error2 = linux_put_timespec(rmtp, args->rmtp);
712 if (error2 != 0) {
713 LIN_SDT_PROBE1(time, linux_nanosleep, copyout_error,
714 error2);
715 return (error2);
716 }
717 }
718
719 return (error);
720 }
721
722 static int
723 linux_common_clock_nanosleep(struct thread *td, clockid_t which,
724 l_int lflags, struct timespec *rqtp, struct timespec *rmtp)
725 {
726 int error, flags;
727 clockid_t clockid;
728
729 error = linux_to_native_timerflags(&flags, lflags);
730 if (error != 0) {
731 LIN_SDT_PROBE1(time, linux_common_clock_nanosleep,
732 unsupported_flags, lflags);
733 return (error);
734 }
735
736 error = linux_to_native_clockid(&clockid, which);
737 if (error != 0) {
738 linux_msg(curthread,
739 "unsupported clock_nanosleep clockid %d", which);
740 LIN_SDT_PROBE1(time, linux_common_clock_nanosleep,
741 unsupported_clockid, which);
742 return (error);
743 }
744 if (clockid == CLOCK_THREAD_CPUTIME_ID)
745 return (ENOTSUP);
746
747 return (kern_clock_nanosleep(td, clockid, flags, rqtp, rmtp));
748 }
749
750 int
751 linux_clock_nanosleep(struct thread *td,
752 struct linux_clock_nanosleep_args *args)
753 {
754 struct timespec *rmtp;
755 struct timespec rqts, rmts;
756 int error, error2;
757
758 error = linux_get_timespec(&rqts, args->rqtp);
759 if (error != 0) {
760 LIN_SDT_PROBE1(time, linux_clock_nanosleep, copyin_error,
761 error);
762 return (error);
763 }
764 if (args->rmtp != NULL)
765 rmtp = &rmts;
766 else
767 rmtp = NULL;
768
769 error = linux_common_clock_nanosleep(td, args->which, args->flags,
770 &rqts, rmtp);
771 if (error == EINTR && (args->flags & LINUX_TIMER_ABSTIME) == 0 &&
772 args->rmtp != NULL) {
773 error2 = linux_put_timespec(rmtp, args->rmtp);
774 if (error2 != 0) {
775 LIN_SDT_PROBE1(time, linux_clock_nanosleep,
776 copyout_error, error2);
777 return (error2);
778 }
779 }
780 return (error);
781 }
782
783 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
784 int
785 linux_clock_nanosleep_time64(struct thread *td,
786 struct linux_clock_nanosleep_time64_args *args)
787 {
788 struct timespec *rmtp;
789 struct timespec rqts, rmts;
790 int error, error2;
791
792 error = linux_get_timespec64(&rqts, args->rqtp);
793 if (error != 0) {
794 LIN_SDT_PROBE1(time, linux_clock_nanosleep_time64,
795 copyin_error, error);
796 return (error);
797 }
798 if (args->rmtp != NULL)
799 rmtp = &rmts;
800 else
801 rmtp = NULL;
802
803 error = linux_common_clock_nanosleep(td, args->which, args->flags,
804 &rqts, rmtp);
805 if (error == EINTR && (args->flags & LINUX_TIMER_ABSTIME) == 0 &&
806 args->rmtp != NULL) {
807 error2 = linux_put_timespec64(rmtp, args->rmtp);
808 if (error2 != 0) {
809 LIN_SDT_PROBE1(time, linux_clock_nanosleep_time64,
810 copyout_error, error2);
811 return (error2);
812 }
813 }
814 return (error);
815 }
816 #endif
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