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  * 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(&ltp->it_interval, &ntp->it_interval);
 165         if (error == 0)
 166                 error = native_to_linux_timespec(&ltp->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, &ltp->it_interval);
 176         if (error == 0)
 177                 error = linux_to_native_timespec(&ntp->it_value, &ltp->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(&lts, &tp);
 383         if (error != 0)
 384                 return (error);
 385         error = copyout(&lts, 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, &lts, 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, &lts);
 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(&lts, &ts);
 532         if (error != 0)
 533                 return (error);
 534         error = copyout(&lts, 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 }