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As noted by bde@ negative tv_sec values are not checked for overflow,
[FreeBSD/FreeBSD.git] / sys / compat / linux / linux_time.c
1 /*      $NetBSD: linux_time.c,v 1.14 2006/05/14 03:40:54 christos Exp $ */
2
3 /*-
4  * Copyright (c) 2001 The NetBSD Foundation, Inc.
5  * All rights reserved.
6  *
7  * This code is derived from software contributed to The NetBSD Foundation
8  * by Emmanuel Dreyfus.
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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29  * POSSIBILITY OF SUCH DAMAGE.
30  */
31
32 #include <sys/cdefs.h>
33 __FBSDID("$FreeBSD$");
34 #if 0
35 __KERNEL_RCSID(0, "$NetBSD: linux_time.c,v 1.14 2006/05/14 03:40:54 christos Exp $");
36 #endif
37
38 #include "opt_compat.h"
39
40 #include <sys/param.h>
41 #include <sys/kernel.h>
42 #include <sys/lock.h>
43 #include <sys/ucred.h>
44 #include <sys/limits.h>
45 #include <sys/mount.h>
46 #include <sys/mutex.h>
47 #include <sys/resourcevar.h>
48 #include <sys/sdt.h>
49 #include <sys/signal.h>
50 #include <sys/stdint.h>
51 #include <sys/syscallsubr.h>
52 #include <sys/sysproto.h>
53 #include <sys/time.h>
54 #include <sys/systm.h>
55 #include <sys/proc.h>
56
57 #ifdef COMPAT_LINUX32
58 #include <machine/../linux32/linux.h>
59 #include <machine/../linux32/linux32_proto.h>
60 #else
61 #include <machine/../linux/linux.h>
62 #include <machine/../linux/linux_proto.h>
63 #endif
64
65 #include <compat/linux/linux_dtrace.h>
66 #include <compat/linux/linux_timer.h>
67
68 /* DTrace init */
69 LIN_SDT_PROVIDER_DECLARE(LINUX_DTRACE);
70
71 /**
72  * DTrace probes in this module.
73  */
74 LIN_SDT_PROBE_DEFINE2(time, native_to_linux_timespec, entry,
75     "struct l_timespec *", "struct timespec *");
76 LIN_SDT_PROBE_DEFINE0(time, native_to_linux_timespec, return);
77 LIN_SDT_PROBE_DEFINE2(time, linux_to_native_timespec, entry,
78     "struct timespec *", "struct l_timespec *");
79 LIN_SDT_PROBE_DEFINE1(time, linux_to_native_timespec, return, "int");
80 LIN_SDT_PROBE_DEFINE2(time, linux_to_native_clockid, entry, "clockid_t *",
81     "clockid_t");
82 LIN_SDT_PROBE_DEFINE1(time, linux_to_native_clockid, unsupported_clockid,
83     "clockid_t");
84 LIN_SDT_PROBE_DEFINE1(time, linux_to_native_clockid, unknown_clockid,
85     "clockid_t");
86 LIN_SDT_PROBE_DEFINE1(time, linux_to_native_clockid, return, "int");
87 LIN_SDT_PROBE_DEFINE2(time, linux_clock_gettime, entry, "clockid_t",
88     "struct l_timespec *");
89 LIN_SDT_PROBE_DEFINE1(time, linux_clock_gettime, conversion_error, "int");
90 LIN_SDT_PROBE_DEFINE1(time, linux_clock_gettime, gettime_error, "int");
91 LIN_SDT_PROBE_DEFINE1(time, linux_clock_gettime, copyout_error, "int");
92 LIN_SDT_PROBE_DEFINE1(time, linux_clock_gettime, return, "int");
93 LIN_SDT_PROBE_DEFINE2(time, linux_clock_settime, entry, "clockid_t",
94     "struct l_timespec *");
95 LIN_SDT_PROBE_DEFINE1(time, linux_clock_settime, conversion_error, "int");
96 LIN_SDT_PROBE_DEFINE1(time, linux_clock_settime, settime_error, "int");
97 LIN_SDT_PROBE_DEFINE1(time, linux_clock_settime, copyin_error, "int");
98 LIN_SDT_PROBE_DEFINE1(time, linux_clock_settime, return, "int");
99 LIN_SDT_PROBE_DEFINE2(time, linux_clock_getres, entry, "clockid_t",
100     "struct l_timespec *");
101 LIN_SDT_PROBE_DEFINE0(time, linux_clock_getres, nullcall);
102 LIN_SDT_PROBE_DEFINE1(time, linux_clock_getres, conversion_error, "int");
103 LIN_SDT_PROBE_DEFINE1(time, linux_clock_getres, getres_error, "int");
104 LIN_SDT_PROBE_DEFINE1(time, linux_clock_getres, copyout_error, "int");
105 LIN_SDT_PROBE_DEFINE1(time, linux_clock_getres, return, "int");
106 LIN_SDT_PROBE_DEFINE2(time, linux_nanosleep, entry, "const struct l_timespec *",
107     "struct l_timespec *");
108 LIN_SDT_PROBE_DEFINE1(time, linux_nanosleep, conversion_error, "int");
109 LIN_SDT_PROBE_DEFINE1(time, linux_nanosleep, copyout_error, "int");
110 LIN_SDT_PROBE_DEFINE1(time, linux_nanosleep, copyin_error, "int");
111 LIN_SDT_PROBE_DEFINE1(time, linux_nanosleep, return, "int");
112 LIN_SDT_PROBE_DEFINE4(time, linux_clock_nanosleep, entry, "clockid_t", "int",
113     "struct l_timespec *", "struct l_timespec *");
114 LIN_SDT_PROBE_DEFINE1(time, linux_clock_nanosleep, conversion_error, "int");
115 LIN_SDT_PROBE_DEFINE1(time, linux_clock_nanosleep, copyout_error, "int");
116 LIN_SDT_PROBE_DEFINE1(time, linux_clock_nanosleep, copyin_error, "int");
117 LIN_SDT_PROBE_DEFINE1(time, linux_clock_nanosleep, unsupported_flags, "int");
118 LIN_SDT_PROBE_DEFINE1(time, linux_clock_nanosleep, unsupported_clockid, "int");
119 LIN_SDT_PROBE_DEFINE1(time, linux_clock_nanosleep, return, "int");
120
121
122 int
123 native_to_linux_timespec(struct l_timespec *ltp, struct timespec *ntp)
124 {
125
126         LIN_SDT_PROBE2(time, native_to_linux_timespec, entry, ltp, ntp);
127 #ifdef COMPAT_LINUX32
128         if (ntp->tv_sec > INT_MAX || ntp->tv_sec < INT_MIN)
129                 return (EOVERFLOW);
130 #endif
131         ltp->tv_sec = ntp->tv_sec;
132         ltp->tv_nsec = ntp->tv_nsec;
133
134         LIN_SDT_PROBE0(time, native_to_linux_timespec, return);
135         return (0);
136 }
137
138 int
139 linux_to_native_timespec(struct timespec *ntp, struct l_timespec *ltp)
140 {
141
142         LIN_SDT_PROBE2(time, linux_to_native_timespec, entry, ntp, ltp);
143
144         if (ltp->tv_sec < 0 || (l_ulong)ltp->tv_nsec > 999999999L) {
145                 LIN_SDT_PROBE1(time, linux_to_native_timespec, return, EINVAL);
146                 return (EINVAL);
147         }
148         ntp->tv_sec = ltp->tv_sec;
149         ntp->tv_nsec = ltp->tv_nsec;
150
151         LIN_SDT_PROBE1(time, linux_to_native_timespec, return, 0);
152         return (0);
153 }
154
155 int
156 native_to_linux_itimerspec(struct l_itimerspec *ltp, struct itimerspec *ntp)
157 {
158         int error;
159
160         error = native_to_linux_timespec(&ltp->it_interval, &ntp->it_interval);
161         if (error == 0)
162                 error = native_to_linux_timespec(&ltp->it_value, &ntp->it_interval);
163         return (error);
164 }
165
166 int
167 linux_to_native_itimerspec(struct itimerspec *ntp, struct l_itimerspec *ltp)
168 {
169         int error;
170
171         error = linux_to_native_timespec(&ntp->it_interval, &ltp->it_interval);
172         if (error == 0)
173                 error = linux_to_native_timespec(&ntp->it_value, &ltp->it_value);
174         return (error);
175 }
176
177 int
178 linux_to_native_clockid(clockid_t *n, clockid_t l)
179 {
180
181         LIN_SDT_PROBE2(time, linux_to_native_clockid, entry, n, l);
182
183         if (l < 0) {
184                 /* cpu-clock */
185                 if ((l & LINUX_CLOCKFD_MASK) == LINUX_CLOCKFD)
186                         return (EINVAL);
187                 if (LINUX_CPUCLOCK_WHICH(l) >= LINUX_CPUCLOCK_MAX)
188                         return (EINVAL);
189
190                 if (LINUX_CPUCLOCK_PERTHREAD(l))
191                         *n = CLOCK_THREAD_CPUTIME_ID;
192                 else
193                         *n = CLOCK_PROCESS_CPUTIME_ID;
194                 return (0);
195         }
196
197         switch (l) {
198         case LINUX_CLOCK_REALTIME:
199                 *n = CLOCK_REALTIME;
200                 break;
201         case LINUX_CLOCK_MONOTONIC:
202                 *n = CLOCK_MONOTONIC;
203                 break;
204         case LINUX_CLOCK_REALTIME_COARSE:
205                 *n = CLOCK_REALTIME_FAST;
206                 break;
207         case LINUX_CLOCK_MONOTONIC_COARSE:
208                 *n = CLOCK_MONOTONIC_FAST;
209                 break;
210         case LINUX_CLOCK_MONOTONIC_RAW:
211         case LINUX_CLOCK_BOOTTIME:
212         case LINUX_CLOCK_REALTIME_ALARM:
213         case LINUX_CLOCK_BOOTTIME_ALARM:
214         case LINUX_CLOCK_SGI_CYCLE:
215         case LINUX_CLOCK_TAI:
216                 LIN_SDT_PROBE1(time, linux_to_native_clockid,
217                     unsupported_clockid, l);
218                 LIN_SDT_PROBE1(time, linux_to_native_clockid, return, EINVAL);
219                 return (EINVAL);
220         default:
221                 LIN_SDT_PROBE1(time, linux_to_native_clockid,
222                     unknown_clockid, l);
223                 LIN_SDT_PROBE1(time, linux_to_native_clockid, return, EINVAL);
224                 return (EINVAL);
225         }
226
227         LIN_SDT_PROBE1(time, linux_to_native_clockid, return, 0);
228         return (0);
229 }
230
231 int
232 linux_clock_gettime(struct thread *td, struct linux_clock_gettime_args *args)
233 {
234         struct l_timespec lts;
235         struct timespec tp;
236         struct rusage ru;
237         struct thread *targettd;
238         struct proc *p;
239         int error, clockwhich;
240         clockid_t nwhich = 0;   /* XXX: GCC */
241         pid_t pid;
242         lwpid_t tid;
243
244         LIN_SDT_PROBE2(time, linux_clock_gettime, entry, args->which, args->tp);
245
246         error = linux_to_native_clockid(&nwhich, args->which);
247         if (error != 0) {
248                 LIN_SDT_PROBE1(time, linux_clock_gettime, conversion_error,
249                     error);
250                 LIN_SDT_PROBE1(time, linux_clock_gettime, return, error);
251                 return (error);
252         }
253
254         switch (nwhich) {
255         case CLOCK_PROCESS_CPUTIME_ID:
256                 clockwhich = LINUX_CPUCLOCK_WHICH(args->which);
257                 pid = LINUX_CPUCLOCK_ID(args->which);
258                 if (pid == 0) {
259                         p = td->td_proc;
260                         PROC_LOCK(p);
261                 } else {
262                         error = pget(pid, PGET_CANSEE, &p);
263                         if (error != 0)
264                                 return (EINVAL);
265                 }
266                 switch (clockwhich) {
267                 case LINUX_CPUCLOCK_PROF:
268                         PROC_STATLOCK(p);
269                         calcru(p, &ru.ru_utime, &ru.ru_stime);
270                         PROC_STATUNLOCK(p);
271                         PROC_UNLOCK(p);
272                         timevaladd(&ru.ru_utime, &ru.ru_stime);
273                         TIMEVAL_TO_TIMESPEC(&ru.ru_utime, &tp);
274                         break;
275                 case LINUX_CPUCLOCK_VIRT:
276                         PROC_STATLOCK(p);
277                         calcru(p, &ru.ru_utime, &ru.ru_stime);
278                         PROC_STATUNLOCK(p);
279                         PROC_UNLOCK(p);
280                         TIMEVAL_TO_TIMESPEC(&ru.ru_utime, &tp);
281                         break;
282                 case LINUX_CPUCLOCK_SCHED:
283                         PROC_UNLOCK(p);
284                         error = kern_clock_getcpuclockid2(td, pid,
285                             CPUCLOCK_WHICH_PID, &nwhich);
286                         if (error != 0)
287                                 return (EINVAL);
288                         error = kern_clock_gettime(td, nwhich, &tp);
289                         break;
290                 default:
291                         PROC_UNLOCK(p);
292                         return (EINVAL);
293                 }
294
295                 break;
296
297         case CLOCK_THREAD_CPUTIME_ID:
298                 clockwhich = LINUX_CPUCLOCK_WHICH(args->which);
299                 p = td->td_proc;
300                 tid = LINUX_CPUCLOCK_ID(args->which);
301                 if (tid == 0) {
302                         targettd = td;
303                         PROC_LOCK(p);
304                 } else {
305                         targettd = tdfind(tid, p->p_pid);
306                         if (targettd == NULL)
307                                 return (EINVAL);
308                 }
309                 switch (clockwhich) {
310                 case LINUX_CPUCLOCK_PROF:
311                         PROC_STATLOCK(p);
312                         thread_lock(targettd);
313                         rufetchtd(targettd, &ru);
314                         thread_unlock(targettd);
315                         PROC_STATUNLOCK(p);
316                         PROC_UNLOCK(p);
317                         timevaladd(&ru.ru_utime, &ru.ru_stime);
318                         TIMEVAL_TO_TIMESPEC(&ru.ru_utime, &tp);
319                         break;
320                 case LINUX_CPUCLOCK_VIRT:
321                         PROC_STATLOCK(p);
322                         thread_lock(targettd);
323                         rufetchtd(targettd, &ru);
324                         thread_unlock(targettd);
325                         PROC_STATUNLOCK(p);
326                         PROC_UNLOCK(p);
327                         TIMEVAL_TO_TIMESPEC(&ru.ru_utime, &tp);
328                         break;
329                 case LINUX_CPUCLOCK_SCHED:
330                         error = kern_clock_getcpuclockid2(td, tid,
331                             CPUCLOCK_WHICH_TID, &nwhich);
332                         PROC_UNLOCK(p);
333                         if (error != 0)
334                                 return (EINVAL);
335                         error = kern_clock_gettime(td, nwhich, &tp);
336                         break;
337                 default:
338                         PROC_UNLOCK(p);
339                         return (EINVAL);
340                 }
341                 break;
342
343         default:
344                 error = kern_clock_gettime(td, nwhich, &tp);
345                 break;
346         }
347         if (error != 0) {
348                 LIN_SDT_PROBE1(time, linux_clock_gettime, gettime_error, error);
349                 LIN_SDT_PROBE1(time, linux_clock_gettime, return, error);
350                 return (error);
351         }
352         error = native_to_linux_timespec(&lts, &tp);
353         if (error != 0)
354                 return (error);
355         error = copyout(&lts, args->tp, sizeof lts);
356         if (error != 0)
357                 LIN_SDT_PROBE1(time, linux_clock_gettime, copyout_error, error);
358
359         LIN_SDT_PROBE1(time, linux_clock_gettime, return, error);
360         return (error);
361 }
362
363 int
364 linux_clock_settime(struct thread *td, struct linux_clock_settime_args *args)
365 {
366         struct timespec ts;
367         struct l_timespec lts;
368         int error;
369         clockid_t nwhich = 0;   /* XXX: GCC */
370
371         LIN_SDT_PROBE2(time, linux_clock_settime, entry, args->which, args->tp);
372
373         error = linux_to_native_clockid(&nwhich, args->which);
374         if (error != 0) {
375                 LIN_SDT_PROBE1(time, linux_clock_settime, conversion_error,
376                     error);
377                 LIN_SDT_PROBE1(time, linux_clock_settime, return, error);
378                 return (error);
379         }
380         error = copyin(args->tp, &lts, sizeof lts);
381         if (error != 0) {
382                 LIN_SDT_PROBE1(time, linux_clock_settime, copyin_error, error);
383                 LIN_SDT_PROBE1(time, linux_clock_settime, return, error);
384                 return (error);
385         }
386         error = linux_to_native_timespec(&ts, &lts);
387         if (error != 0) {
388                 LIN_SDT_PROBE1(time, linux_clock_settime, conversion_error,
389                     error);
390                 LIN_SDT_PROBE1(time, linux_clock_settime, return, error);
391                 return (error);
392         }
393
394         error = kern_clock_settime(td, nwhich, &ts);
395         if (error != 0)
396                 LIN_SDT_PROBE1(time, linux_clock_settime, settime_error, error);
397
398         LIN_SDT_PROBE1(time, linux_clock_settime, return, error);
399         return (error);
400 }
401
402 int
403 linux_clock_getres(struct thread *td, struct linux_clock_getres_args *args)
404 {
405         struct proc *p;
406         struct timespec ts;
407         struct l_timespec lts;
408         int error, clockwhich;
409         clockid_t nwhich = 0;   /* XXX: GCC */
410         pid_t pid;
411         lwpid_t tid;
412
413         LIN_SDT_PROBE2(time, linux_clock_getres, entry, args->which, args->tp);
414
415         error = linux_to_native_clockid(&nwhich, args->which);
416         if (error != 0) {
417                 LIN_SDT_PROBE1(time, linux_clock_getres, conversion_error,
418                     error);
419                 LIN_SDT_PROBE1(time, linux_clock_getres, return, error);
420                 return (error);
421         }
422
423         /*
424          * Check user supplied clock id in case of per-process 
425          * or thread-specific cpu-time clock.
426          */
427         switch (nwhich) {
428         case CLOCK_THREAD_CPUTIME_ID:
429                 tid = LINUX_CPUCLOCK_ID(args->which);
430                 if (tid != 0) {
431                         p = td->td_proc;
432                         if (tdfind(tid, p->p_pid) == NULL)
433                                 return (ESRCH);
434                         PROC_UNLOCK(p);
435                 }
436                 break;
437         case CLOCK_PROCESS_CPUTIME_ID:
438                 pid = LINUX_CPUCLOCK_ID(args->which);
439                 if (pid != 0) {
440                         error = pget(pid, PGET_CANSEE, &p);
441                         if (error != 0)
442                                 return (EINVAL);
443                         PROC_UNLOCK(p);
444                 }
445                 break;
446         }
447
448         if (args->tp == NULL) {
449                 LIN_SDT_PROBE0(time, linux_clock_getres, nullcall);
450                 LIN_SDT_PROBE1(time, linux_clock_getres, return, 0);
451                 return (0);
452         }
453
454         switch (nwhich) {
455         case CLOCK_THREAD_CPUTIME_ID:
456         case CLOCK_PROCESS_CPUTIME_ID:
457                 clockwhich = LINUX_CPUCLOCK_WHICH(args->which);
458                 switch (clockwhich) {
459                 case LINUX_CPUCLOCK_PROF:
460                         nwhich = CLOCK_PROF;
461                         break;
462                 case LINUX_CPUCLOCK_VIRT:
463                         nwhich = CLOCK_VIRTUAL;
464                         break;
465                 case LINUX_CPUCLOCK_SCHED:
466                         break;
467                 default:
468                         return (EINVAL);
469                 }
470                 break;
471
472         default:
473                 break;
474         }
475         error = kern_clock_getres(td, nwhich, &ts);
476         if (error != 0) {
477                 LIN_SDT_PROBE1(time, linux_clock_getres, getres_error, error);
478                 LIN_SDT_PROBE1(time, linux_clock_getres, return, error);
479                 return (error);
480         }
481         error = native_to_linux_timespec(&lts, &ts);
482         if (error != 0)
483                 return (error);
484         error = copyout(&lts, args->tp, sizeof lts);
485         if (error != 0)
486                 LIN_SDT_PROBE1(time, linux_clock_getres, copyout_error, error);
487
488         LIN_SDT_PROBE1(time, linux_clock_getres, return, error);
489         return (error);
490 }
491
492 int
493 linux_nanosleep(struct thread *td, struct linux_nanosleep_args *args)
494 {
495         struct timespec *rmtp;
496         struct l_timespec lrqts, lrmts;
497         struct timespec rqts, rmts;
498         int error, error2;
499
500         LIN_SDT_PROBE2(time, linux_nanosleep, entry, args->rqtp, args->rmtp);
501
502         error = copyin(args->rqtp, &lrqts, sizeof lrqts);
503         if (error != 0) {
504                 LIN_SDT_PROBE1(time, linux_nanosleep, copyin_error, error);
505                 LIN_SDT_PROBE1(time, linux_nanosleep, return, error);
506                 return (error);
507         }
508
509         if (args->rmtp != NULL)
510                 rmtp = &rmts;
511         else
512                 rmtp = NULL;
513
514         error = linux_to_native_timespec(&rqts, &lrqts);
515         if (error != 0) {
516                 LIN_SDT_PROBE1(time, linux_nanosleep, conversion_error, error);
517                 LIN_SDT_PROBE1(time, linux_nanosleep, return, error);
518                 return (error);
519         }
520         error = kern_nanosleep(td, &rqts, rmtp);
521         if (error == EINTR && args->rmtp != NULL) {
522                 error2 = native_to_linux_timespec(&lrmts, rmtp);
523                 if (error2 != 0)
524                         return (error2);
525                 error2 = copyout(&lrmts, args->rmtp, sizeof(lrmts));
526                 if (error2 != 0) {
527                         LIN_SDT_PROBE1(time, linux_nanosleep, copyout_error,
528                             error2);
529                         LIN_SDT_PROBE1(time, linux_nanosleep, return, error2);
530                         return (error2);
531                 }
532         }
533
534         LIN_SDT_PROBE1(time, linux_nanosleep, return, error);
535         return (error);
536 }
537
538 int
539 linux_clock_nanosleep(struct thread *td, struct linux_clock_nanosleep_args *args)
540 {
541         struct timespec *rmtp;
542         struct l_timespec lrqts, lrmts;
543         struct timespec rqts, rmts;
544         int error, error2;
545
546         LIN_SDT_PROBE4(time, linux_clock_nanosleep, entry, args->which,
547             args->flags, args->rqtp, args->rmtp);
548
549         if (args->flags != 0) {
550                 /* XXX deal with TIMER_ABSTIME */
551                 LIN_SDT_PROBE1(time, linux_clock_nanosleep, unsupported_flags,
552                     args->flags);
553                 LIN_SDT_PROBE1(time, linux_clock_nanosleep, return, EINVAL);
554                 return (EINVAL);        /* XXX deal with TIMER_ABSTIME */
555         }
556
557         if (args->which != LINUX_CLOCK_REALTIME) {
558                 LIN_SDT_PROBE1(time, linux_clock_nanosleep, unsupported_clockid,
559                     args->which);
560                 LIN_SDT_PROBE1(time, linux_clock_nanosleep, return, EINVAL);
561                 return (EINVAL);
562         }
563
564         error = copyin(args->rqtp, &lrqts, sizeof(lrqts));
565         if (error != 0) {
566                 LIN_SDT_PROBE1(time, linux_clock_nanosleep, copyin_error,
567                     error);
568                 LIN_SDT_PROBE1(time, linux_clock_nanosleep, return, error);
569                 return (error);
570         }
571
572         if (args->rmtp != NULL)
573                 rmtp = &rmts;
574         else
575                 rmtp = NULL;
576
577         error = linux_to_native_timespec(&rqts, &lrqts);
578         if (error != 0) {
579                 LIN_SDT_PROBE1(time, linux_clock_nanosleep, conversion_error,
580                     error);
581                 LIN_SDT_PROBE1(time, linux_clock_nanosleep, return, error);
582                 return (error);
583         }
584         error = kern_nanosleep(td, &rqts, rmtp);
585         if (error == EINTR && args->rmtp != NULL) {
586                 /* XXX. Not for TIMER_ABSTIME */
587                 error2 = native_to_linux_timespec(&lrmts, rmtp);
588                 if (error2 != 0)
589                         return (error2);
590                 error2 = copyout(&lrmts, args->rmtp, sizeof(lrmts));
591                 if (error2 != 0) {
592                         LIN_SDT_PROBE1(time, linux_clock_nanosleep,
593                             copyout_error, error2);
594                         LIN_SDT_PROBE1(time, linux_clock_nanosleep,
595                             return, error2);
596                         return (error2);
597                 }
598         }
599
600         LIN_SDT_PROBE1(time, linux_clock_nanosleep, return, error);
601         return (error);
602 }