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_DEFINE2(time, native_to_linux_timespec, entry,
79 "struct l_timespec *", "struct timespec *");
80 LIN_SDT_PROBE_DEFINE0(time, native_to_linux_timespec, return);
81 LIN_SDT_PROBE_DEFINE2(time, linux_to_native_timespec, entry,
82 "struct timespec *", "struct l_timespec *");
83 LIN_SDT_PROBE_DEFINE1(time, linux_to_native_timespec, return, "int");
84 LIN_SDT_PROBE_DEFINE2(time, linux_to_native_clockid, entry, "clockid_t *",
85 "clockid_t");
86 LIN_SDT_PROBE_DEFINE1(time, linux_to_native_clockid, unsupported_clockid,
87 "clockid_t");
88 LIN_SDT_PROBE_DEFINE1(time, linux_to_native_clockid, unknown_clockid,
89 "clockid_t");
90 LIN_SDT_PROBE_DEFINE1(time, linux_to_native_clockid, return, "int");
91 LIN_SDT_PROBE_DEFINE2(time, linux_clock_gettime, entry, "clockid_t",
92 "struct l_timespec *");
93 LIN_SDT_PROBE_DEFINE1(time, linux_clock_gettime, conversion_error, "int");
94 LIN_SDT_PROBE_DEFINE1(time, linux_clock_gettime, gettime_error, "int");
95 LIN_SDT_PROBE_DEFINE1(time, linux_clock_gettime, copyout_error, "int");
96 LIN_SDT_PROBE_DEFINE1(time, linux_clock_gettime, return, "int");
97 LIN_SDT_PROBE_DEFINE2(time, linux_clock_settime, entry, "clockid_t",
98 "struct l_timespec *");
99 LIN_SDT_PROBE_DEFINE1(time, linux_clock_settime, conversion_error, "int");
100 LIN_SDT_PROBE_DEFINE1(time, linux_clock_settime, settime_error, "int");
101 LIN_SDT_PROBE_DEFINE1(time, linux_clock_settime, copyin_error, "int");
102 LIN_SDT_PROBE_DEFINE1(time, linux_clock_settime, return, "int");
103 LIN_SDT_PROBE_DEFINE2(time, linux_clock_getres, entry, "clockid_t",
104 "struct l_timespec *");
105 LIN_SDT_PROBE_DEFINE0(time, linux_clock_getres, nullcall);
106 LIN_SDT_PROBE_DEFINE1(time, linux_clock_getres, conversion_error, "int");
107 LIN_SDT_PROBE_DEFINE1(time, linux_clock_getres, getres_error, "int");
108 LIN_SDT_PROBE_DEFINE1(time, linux_clock_getres, copyout_error, "int");
109 LIN_SDT_PROBE_DEFINE1(time, linux_clock_getres, return, "int");
110 LIN_SDT_PROBE_DEFINE2(time, linux_nanosleep, entry, "const struct l_timespec *",
111 "struct l_timespec *");
112 LIN_SDT_PROBE_DEFINE1(time, linux_nanosleep, conversion_error, "int");
113 LIN_SDT_PROBE_DEFINE1(time, linux_nanosleep, copyout_error, "int");
114 LIN_SDT_PROBE_DEFINE1(time, linux_nanosleep, copyin_error, "int");
115 LIN_SDT_PROBE_DEFINE1(time, linux_nanosleep, return, "int");
116 LIN_SDT_PROBE_DEFINE4(time, linux_clock_nanosleep, entry, "clockid_t", "int",
117 "struct l_timespec *", "struct l_timespec *");
118 LIN_SDT_PROBE_DEFINE1(time, linux_clock_nanosleep, conversion_error, "int");
119 LIN_SDT_PROBE_DEFINE1(time, linux_clock_nanosleep, copyout_error, "int");
120 LIN_SDT_PROBE_DEFINE1(time, linux_clock_nanosleep, copyin_error, "int");
121 LIN_SDT_PROBE_DEFINE1(time, linux_clock_nanosleep, unsupported_flags, "int");
122 LIN_SDT_PROBE_DEFINE1(time, linux_clock_nanosleep, unsupported_clockid, "int");
123 LIN_SDT_PROBE_DEFINE1(time, linux_clock_nanosleep, return, "int");
124
125
126 int
127 native_to_linux_timespec(struct l_timespec *ltp, struct timespec *ntp)
128 {
129
130 LIN_SDT_PROBE2(time, native_to_linux_timespec, entry, ltp, ntp);
131 #ifdef COMPAT_LINUX32
132 if (ntp->tv_sec > INT_MAX || ntp->tv_sec < INT_MIN)
133 return (EOVERFLOW);
134 #endif
135 ltp->tv_sec = ntp->tv_sec;
136 ltp->tv_nsec = ntp->tv_nsec;
137
138 LIN_SDT_PROBE0(time, native_to_linux_timespec, return);
139 return (0);
140 }
141
142 int
143 linux_to_native_timespec(struct timespec *ntp, struct l_timespec *ltp)
144 {
145
146 LIN_SDT_PROBE2(time, linux_to_native_timespec, entry, ntp, ltp);
147
148 if (ltp->tv_sec < 0 || ltp->tv_nsec < 0 || ltp->tv_nsec > 999999999) {
149 LIN_SDT_PROBE1(time, linux_to_native_timespec, return, EINVAL);
150 return (EINVAL);
151 }
152 ntp->tv_sec = ltp->tv_sec;
153 ntp->tv_nsec = ltp->tv_nsec;
154
155 LIN_SDT_PROBE1(time, linux_to_native_timespec, return, 0);
156 return (0);
157 }
158
159 int
160 native_to_linux_itimerspec(struct l_itimerspec *ltp, struct itimerspec *ntp)
161 {
162 int error;
163
164 error = native_to_linux_timespec(<p->it_interval, &ntp->it_interval);
165 if (error == 0)
166 error = native_to_linux_timespec(<p->it_value, &ntp->it_interval);
167 return (error);
168 }
169
170 int
171 linux_to_native_itimerspec(struct itimerspec *ntp, struct l_itimerspec *ltp)
172 {
173 int error;
174
175 error = linux_to_native_timespec(&ntp->it_interval, <p->it_interval);
176 if (error == 0)
177 error = linux_to_native_timespec(&ntp->it_value, <p->it_value);
178 return (error);
179 }
180
181 int
182 linux_to_native_clockid(clockid_t *n, clockid_t l)
183 {
184
185 LIN_SDT_PROBE2(time, linux_to_native_clockid, entry, n, l);
186
187 if (l < 0) {
188 /* cpu-clock */
189 if ((l & LINUX_CLOCKFD_MASK) == LINUX_CLOCKFD)
190 return (EINVAL);
191 if (LINUX_CPUCLOCK_WHICH(l) >= LINUX_CPUCLOCK_MAX)
192 return (EINVAL);
193
194 if (LINUX_CPUCLOCK_PERTHREAD(l))
195 *n = CLOCK_THREAD_CPUTIME_ID;
196 else
197 *n = CLOCK_PROCESS_CPUTIME_ID;
198 return (0);
199 }
200
201 switch (l) {
202 case LINUX_CLOCK_REALTIME:
203 *n = CLOCK_REALTIME;
204 break;
205 case LINUX_CLOCK_MONOTONIC:
206 *n = CLOCK_MONOTONIC;
207 break;
208 case LINUX_CLOCK_PROCESS_CPUTIME_ID:
209 *n = CLOCK_PROCESS_CPUTIME_ID;
210 break;
211 case LINUX_CLOCK_THREAD_CPUTIME_ID:
212 *n = CLOCK_THREAD_CPUTIME_ID;
213 break;
214 case LINUX_CLOCK_REALTIME_COARSE:
215 *n = CLOCK_REALTIME_FAST;
216 break;
217 case LINUX_CLOCK_MONOTONIC_COARSE:
218 case LINUX_CLOCK_MONOTONIC_RAW:
219 *n = CLOCK_MONOTONIC_FAST;
220 break;
221 case LINUX_CLOCK_BOOTTIME:
222 *n = CLOCK_UPTIME;
223 break;
224 case LINUX_CLOCK_REALTIME_ALARM:
225 case LINUX_CLOCK_BOOTTIME_ALARM:
226 case LINUX_CLOCK_SGI_CYCLE:
227 case LINUX_CLOCK_TAI:
228 LIN_SDT_PROBE1(time, linux_to_native_clockid,
229 unsupported_clockid, l);
230 LIN_SDT_PROBE1(time, linux_to_native_clockid, return, EINVAL);
231 return (EINVAL);
232 default:
233 LIN_SDT_PROBE1(time, linux_to_native_clockid,
234 unknown_clockid, l);
235 LIN_SDT_PROBE1(time, linux_to_native_clockid, return, EINVAL);
236 return (EINVAL);
237 }
238
239 LIN_SDT_PROBE1(time, linux_to_native_clockid, return, 0);
240 return (0);
241 }
242
243 int
244 linux_to_native_timerflags(int *nflags, int flags)
245 {
246
247 if (flags & ~LINUX_TIMER_ABSTIME)
248 return (EINVAL);
249 *nflags = 0;
250 if (flags & LINUX_TIMER_ABSTIME)
251 *nflags |= TIMER_ABSTIME;
252 return (0);
253 }
254
255 int
256 linux_clock_gettime(struct thread *td, struct linux_clock_gettime_args *args)
257 {
258 struct l_timespec lts;
259 struct timespec tp;
260 struct rusage ru;
261 struct thread *targettd;
262 struct proc *p;
263 int error, clockwhich;
264 clockid_t nwhich;
265 pid_t pid;
266 lwpid_t tid;
267
268 LIN_SDT_PROBE2(time, linux_clock_gettime, entry, args->which, args->tp);
269
270 error = linux_to_native_clockid(&nwhich, args->which);
271 if (error != 0) {
272 linux_msg(curthread,
273 "unsupported clock_gettime clockid %d", args->which);
274 LIN_SDT_PROBE1(time, linux_clock_gettime, conversion_error,
275 error);
276 LIN_SDT_PROBE1(time, linux_clock_gettime, return, error);
277 return (error);
278 }
279
280 switch (nwhich) {
281 case CLOCK_PROCESS_CPUTIME_ID:
282 if (args->which < 0) {
283 clockwhich = LINUX_CPUCLOCK_WHICH(args->which);
284 pid = LINUX_CPUCLOCK_ID(args->which);
285 } else {
286 clockwhich = LINUX_CPUCLOCK_SCHED;
287 pid = 0;
288 }
289 if (pid == 0) {
290 p = td->td_proc;
291 PROC_LOCK(p);
292 } else {
293 error = pget(pid, PGET_CANSEE, &p);
294 if (error != 0)
295 return (EINVAL);
296 }
297 switch (clockwhich) {
298 case LINUX_CPUCLOCK_PROF:
299 PROC_STATLOCK(p);
300 calcru(p, &ru.ru_utime, &ru.ru_stime);
301 PROC_STATUNLOCK(p);
302 PROC_UNLOCK(p);
303 timevaladd(&ru.ru_utime, &ru.ru_stime);
304 TIMEVAL_TO_TIMESPEC(&ru.ru_utime, &tp);
305 break;
306 case LINUX_CPUCLOCK_VIRT:
307 PROC_STATLOCK(p);
308 calcru(p, &ru.ru_utime, &ru.ru_stime);
309 PROC_STATUNLOCK(p);
310 PROC_UNLOCK(p);
311 TIMEVAL_TO_TIMESPEC(&ru.ru_utime, &tp);
312 break;
313 case LINUX_CPUCLOCK_SCHED:
314 kern_process_cputime(p, &tp);
315 PROC_UNLOCK(p);
316 break;
317 default:
318 PROC_UNLOCK(p);
319 return (EINVAL);
320 }
321
322 break;
323
324 case CLOCK_THREAD_CPUTIME_ID:
325 if (args->which < 0) {
326 clockwhich = LINUX_CPUCLOCK_WHICH(args->which);
327 tid = LINUX_CPUCLOCK_ID(args->which);
328 } else {
329 clockwhich = LINUX_CPUCLOCK_SCHED;
330 tid = 0;
331 }
332 p = td->td_proc;
333 if (tid == 0) {
334 targettd = td;
335 PROC_LOCK(p);
336 } else {
337 targettd = linux_tdfind(td, tid, p->p_pid);
338 if (targettd == NULL)
339 return (EINVAL);
340 }
341 switch (clockwhich) {
342 case LINUX_CPUCLOCK_PROF:
343 PROC_STATLOCK(p);
344 thread_lock(targettd);
345 rufetchtd(targettd, &ru);
346 thread_unlock(targettd);
347 PROC_STATUNLOCK(p);
348 PROC_UNLOCK(p);
349 timevaladd(&ru.ru_utime, &ru.ru_stime);
350 TIMEVAL_TO_TIMESPEC(&ru.ru_utime, &tp);
351 break;
352 case LINUX_CPUCLOCK_VIRT:
353 PROC_STATLOCK(p);
354 thread_lock(targettd);
355 rufetchtd(targettd, &ru);
356 thread_unlock(targettd);
357 PROC_STATUNLOCK(p);
358 PROC_UNLOCK(p);
359 TIMEVAL_TO_TIMESPEC(&ru.ru_utime, &tp);
360 break;
361 case LINUX_CPUCLOCK_SCHED:
362 if (td == targettd)
363 targettd = NULL;
364 kern_thread_cputime(targettd, &tp);
365 PROC_UNLOCK(p);
366 break;
367 default:
368 PROC_UNLOCK(p);
369 return (EINVAL);
370 }
371 break;
372
373 default:
374 error = kern_clock_gettime(td, nwhich, &tp);
375 break;
376 }
377 if (error != 0) {
378 LIN_SDT_PROBE1(time, linux_clock_gettime, gettime_error, error);
379 LIN_SDT_PROBE1(time, linux_clock_gettime, return, error);
380 return (error);
381 }
382 error = native_to_linux_timespec(<s, &tp);
383 if (error != 0)
384 return (error);
385 error = copyout(<s, args->tp, sizeof lts);
386 if (error != 0)
387 LIN_SDT_PROBE1(time, linux_clock_gettime, copyout_error, error);
388
389 LIN_SDT_PROBE1(time, linux_clock_gettime, return, error);
390 return (error);
391 }
392
393 int
394 linux_clock_settime(struct thread *td, struct linux_clock_settime_args *args)
395 {
396 struct timespec ts;
397 struct l_timespec lts;
398 int error;
399 clockid_t nwhich;
400
401 LIN_SDT_PROBE2(time, linux_clock_settime, entry, args->which, args->tp);
402
403 error = linux_to_native_clockid(&nwhich, args->which);
404 if (error != 0) {
405 linux_msg(curthread,
406 "unsupported clock_settime clockid %d", args->which);
407 LIN_SDT_PROBE1(time, linux_clock_settime, conversion_error,
408 error);
409 LIN_SDT_PROBE1(time, linux_clock_settime, return, error);
410 return (error);
411 }
412 error = copyin(args->tp, <s, sizeof lts);
413 if (error != 0) {
414 LIN_SDT_PROBE1(time, linux_clock_settime, copyin_error, error);
415 LIN_SDT_PROBE1(time, linux_clock_settime, return, error);
416 return (error);
417 }
418 error = linux_to_native_timespec(&ts, <s);
419 if (error != 0) {
420 LIN_SDT_PROBE1(time, linux_clock_settime, conversion_error,
421 error);
422 LIN_SDT_PROBE1(time, linux_clock_settime, return, error);
423 return (error);
424 }
425
426 error = kern_clock_settime(td, nwhich, &ts);
427 if (error != 0)
428 LIN_SDT_PROBE1(time, linux_clock_settime, settime_error, error);
429
430 LIN_SDT_PROBE1(time, linux_clock_settime, return, error);
431 return (error);
432 }
433
434 int
435 linux_clock_getres(struct thread *td, struct linux_clock_getres_args *args)
436 {
437 struct proc *p;
438 struct timespec ts;
439 struct l_timespec lts;
440 int error, clockwhich;
441 clockid_t nwhich;
442 pid_t pid;
443 lwpid_t tid;
444
445 LIN_SDT_PROBE2(time, linux_clock_getres, entry, args->which, args->tp);
446
447 error = linux_to_native_clockid(&nwhich, args->which);
448 if (error != 0) {
449 linux_msg(curthread,
450 "unsupported clock_getres clockid %d", args->which);
451 LIN_SDT_PROBE1(time, linux_clock_getres, conversion_error,
452 error);
453 LIN_SDT_PROBE1(time, linux_clock_getres, return, error);
454 return (error);
455 }
456
457 /*
458 * Check user supplied clock id in case of per-process
459 * or thread-specific cpu-time clock.
460 */
461 if (args->which < 0) {
462 switch (nwhich) {
463 case CLOCK_THREAD_CPUTIME_ID:
464 tid = LINUX_CPUCLOCK_ID(args->which);
465 if (tid != 0) {
466 p = td->td_proc;
467 if (linux_tdfind(td, tid, p->p_pid) == NULL)
468 return (EINVAL);
469 PROC_UNLOCK(p);
470 }
471 break;
472 case CLOCK_PROCESS_CPUTIME_ID:
473 pid = LINUX_CPUCLOCK_ID(args->which);
474 if (pid != 0) {
475 error = pget(pid, PGET_CANSEE, &p);
476 if (error != 0)
477 return (EINVAL);
478 PROC_UNLOCK(p);
479 }
480 break;
481 }
482 }
483
484 if (args->tp == NULL) {
485 LIN_SDT_PROBE0(time, linux_clock_getres, nullcall);
486 LIN_SDT_PROBE1(time, linux_clock_getres, return, 0);
487 return (0);
488 }
489
490 switch (nwhich) {
491 case CLOCK_THREAD_CPUTIME_ID:
492 case CLOCK_PROCESS_CPUTIME_ID:
493 clockwhich = LINUX_CPUCLOCK_WHICH(args->which);
494 /*
495 * In both cases (when the clock id obtained by a call to
496 * clock_getcpuclockid() or using the clock
497 * ID CLOCK_PROCESS_CPUTIME_ID Linux hardcodes precision
498 * of clock. The same for the CLOCK_THREAD_CPUTIME_ID clock.
499 *
500 * See Linux posix_cpu_clock_getres() implementation.
501 */
502 if (args->which > 0 || clockwhich == LINUX_CPUCLOCK_SCHED) {
503 ts.tv_sec = 0;
504 ts.tv_nsec = 1;
505 goto out;
506 }
507
508 switch (clockwhich) {
509 case LINUX_CPUCLOCK_PROF:
510 nwhich = CLOCK_PROF;
511 break;
512 case LINUX_CPUCLOCK_VIRT:
513 nwhich = CLOCK_VIRTUAL;
514 break;
515 default:
516 return (EINVAL);
517 }
518 break;
519
520 default:
521 break;
522 }
523 error = kern_clock_getres(td, nwhich, &ts);
524 if (error != 0) {
525 LIN_SDT_PROBE1(time, linux_clock_getres, getres_error, error);
526 LIN_SDT_PROBE1(time, linux_clock_getres, return, error);
527 return (error);
528 }
529
530 out:
531 error = native_to_linux_timespec(<s, &ts);
532 if (error != 0)
533 return (error);
534 error = copyout(<s, args->tp, sizeof lts);
535 if (error != 0)
536 LIN_SDT_PROBE1(time, linux_clock_getres, copyout_error, error);
537
538 LIN_SDT_PROBE1(time, linux_clock_getres, return, error);
539 return (error);
540 }
541
542 int
543 linux_nanosleep(struct thread *td, struct linux_nanosleep_args *args)
544 {
545 struct timespec *rmtp;
546 struct l_timespec lrqts, lrmts;
547 struct timespec rqts, rmts;
548 int error, error2;
549
550 LIN_SDT_PROBE2(time, linux_nanosleep, entry, args->rqtp, args->rmtp);
551
552 error = copyin(args->rqtp, &lrqts, sizeof lrqts);
553 if (error != 0) {
554 LIN_SDT_PROBE1(time, linux_nanosleep, copyin_error, error);
555 LIN_SDT_PROBE1(time, linux_nanosleep, return, error);
556 return (error);
557 }
558
559 if (args->rmtp != NULL)
560 rmtp = &rmts;
561 else
562 rmtp = NULL;
563
564 error = linux_to_native_timespec(&rqts, &lrqts);
565 if (error != 0) {
566 LIN_SDT_PROBE1(time, linux_nanosleep, conversion_error, error);
567 LIN_SDT_PROBE1(time, linux_nanosleep, return, error);
568 return (error);
569 }
570 error = kern_nanosleep(td, &rqts, rmtp);
571 if (error == EINTR && args->rmtp != NULL) {
572 error2 = native_to_linux_timespec(&lrmts, rmtp);
573 if (error2 != 0)
574 return (error2);
575 error2 = copyout(&lrmts, args->rmtp, sizeof(lrmts));
576 if (error2 != 0) {
577 LIN_SDT_PROBE1(time, linux_nanosleep, copyout_error,
578 error2);
579 LIN_SDT_PROBE1(time, linux_nanosleep, return, error2);
580 return (error2);
581 }
582 }
583
584 LIN_SDT_PROBE1(time, linux_nanosleep, return, error);
585 return (error);
586 }
587
588 int
589 linux_clock_nanosleep(struct thread *td, struct linux_clock_nanosleep_args *args)
590 {
591 struct timespec *rmtp;
592 struct l_timespec lrqts, lrmts;
593 struct timespec rqts, rmts;
594 int error, error2, flags;
595 clockid_t clockid;
596
597 LIN_SDT_PROBE4(time, linux_clock_nanosleep, entry, args->which,
598 args->flags, args->rqtp, args->rmtp);
599
600 error = linux_to_native_timerflags(&flags, args->flags);
601 if (error != 0) {
602 LIN_SDT_PROBE1(time, linux_clock_nanosleep, unsupported_flags,
603 args->flags);
604 LIN_SDT_PROBE1(time, linux_clock_nanosleep, return, error);
605 return (error);
606 }
607
608 error = linux_to_native_clockid(&clockid, args->which);
609 if (error != 0) {
610 linux_msg(curthread,
611 "unsupported clock_nanosleep clockid %d", args->which);
612 LIN_SDT_PROBE1(time, linux_clock_nanosleep, unsupported_clockid,
613 args->which);
614 LIN_SDT_PROBE1(time, linux_clock_settime, return, error);
615 return (error);
616 }
617
618 error = copyin(args->rqtp, &lrqts, sizeof(lrqts));
619 if (error != 0) {
620 LIN_SDT_PROBE1(time, linux_clock_nanosleep, copyin_error,
621 error);
622 LIN_SDT_PROBE1(time, linux_clock_nanosleep, return, error);
623 return (error);
624 }
625
626 if (args->rmtp != NULL)
627 rmtp = &rmts;
628 else
629 rmtp = NULL;
630
631 error = linux_to_native_timespec(&rqts, &lrqts);
632 if (error != 0) {
633 LIN_SDT_PROBE1(time, linux_clock_nanosleep, conversion_error,
634 error);
635 LIN_SDT_PROBE1(time, linux_clock_nanosleep, return, error);
636 return (error);
637 }
638 error = kern_clock_nanosleep(td, clockid, flags, &rqts, rmtp);
639 if (error == EINTR && (flags & TIMER_ABSTIME) == 0 &&
640 args->rmtp != NULL) {
641 error2 = native_to_linux_timespec(&lrmts, rmtp);
642 if (error2 != 0)
643 return (error2);
644 error2 = copyout(&lrmts, args->rmtp, sizeof(lrmts));
645 if (error2 != 0) {
646 LIN_SDT_PROBE1(time, linux_clock_nanosleep,
647 copyout_error, error2);
648 LIN_SDT_PROBE1(time, linux_clock_nanosleep,
649 return, error2);
650 return (error2);
651 }
652 }
653
654 LIN_SDT_PROBE1(time, linux_clock_nanosleep, return, error);
655 return (error);
656 }
Cache object: 5cc3674be1cc820143cef1ab93658b62
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