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
  71 /* DTrace init */
  72 LIN_SDT_PROVIDER_DECLARE(LINUX_DTRACE);
  73
  74 /**
  75  * DTrace probes in this module.
  76  */
  77 LIN_SDT_PROBE_DEFINE2(time, native_to_linux_timespec, entry,
  78     "struct l_timespec *", "struct timespec *");
  79 LIN_SDT_PROBE_DEFINE0(time, native_to_linux_timespec, return);
  80 LIN_SDT_PROBE_DEFINE2(time, linux_to_native_timespec, entry,
  81     "struct timespec *", "struct l_timespec *");
  82 LIN_SDT_PROBE_DEFINE1(time, linux_to_native_timespec, return, "int");
  83 LIN_SDT_PROBE_DEFINE2(time, linux_to_native_clockid, entry, "clockid_t *",
  84     "clockid_t");
  85 LIN_SDT_PROBE_DEFINE1(time, linux_to_native_clockid, unsupported_clockid,
  86     "clockid_t");
  87 LIN_SDT_PROBE_DEFINE1(time, linux_to_native_clockid, unknown_clockid,
  88     "clockid_t");
  89 LIN_SDT_PROBE_DEFINE1(time, linux_to_native_clockid, return, "int");
  90 LIN_SDT_PROBE_DEFINE2(time, linux_clock_gettime, entry, "clockid_t",
  91     "struct l_timespec *");
  92 LIN_SDT_PROBE_DEFINE1(time, linux_clock_gettime, conversion_error, "int");
  93 LIN_SDT_PROBE_DEFINE1(time, linux_clock_gettime, gettime_error, "int");
  94 LIN_SDT_PROBE_DEFINE1(time, linux_clock_gettime, copyout_error, "int");
  95 LIN_SDT_PROBE_DEFINE1(time, linux_clock_gettime, return, "int");
  96 LIN_SDT_PROBE_DEFINE2(time, linux_clock_settime, entry, "clockid_t",
  97     "struct l_timespec *");
  98 LIN_SDT_PROBE_DEFINE1(time, linux_clock_settime, conversion_error, "int");
  99 LIN_SDT_PROBE_DEFINE1(time, linux_clock_settime, settime_error, "int");
 100 LIN_SDT_PROBE_DEFINE1(time, linux_clock_settime, copyin_error, "int");
 101 LIN_SDT_PROBE_DEFINE1(time, linux_clock_settime, return, "int");
 102 LIN_SDT_PROBE_DEFINE2(time, linux_clock_getres, entry, "clockid_t",
 103     "struct l_timespec *");
 104 LIN_SDT_PROBE_DEFINE0(time, linux_clock_getres, nullcall);
 105 LIN_SDT_PROBE_DEFINE1(time, linux_clock_getres, conversion_error, "int");
 106 LIN_SDT_PROBE_DEFINE1(time, linux_clock_getres, getres_error, "int");
 107 LIN_SDT_PROBE_DEFINE1(time, linux_clock_getres, copyout_error, "int");
 108 LIN_SDT_PROBE_DEFINE1(time, linux_clock_getres, return, "int");
 109 LIN_SDT_PROBE_DEFINE2(time, linux_nanosleep, entry, "const struct l_timespec *",
 110     "struct l_timespec *");
 111 LIN_SDT_PROBE_DEFINE1(time, linux_nanosleep, conversion_error, "int");
 112 LIN_SDT_PROBE_DEFINE1(time, linux_nanosleep, copyout_error, "int");
 113 LIN_SDT_PROBE_DEFINE1(time, linux_nanosleep, copyin_error, "int");
 114 LIN_SDT_PROBE_DEFINE1(time, linux_nanosleep, return, "int");
 115 LIN_SDT_PROBE_DEFINE4(time, linux_clock_nanosleep, entry, "clockid_t", "int",
 116     "struct l_timespec *", "struct l_timespec *");
 117 LIN_SDT_PROBE_DEFINE1(time, linux_clock_nanosleep, conversion_error, "int");
 118 LIN_SDT_PROBE_DEFINE1(time, linux_clock_nanosleep, copyout_error, "int");
 119 LIN_SDT_PROBE_DEFINE1(time, linux_clock_nanosleep, copyin_error, "int");
 120 LIN_SDT_PROBE_DEFINE1(time, linux_clock_nanosleep, unsupported_flags, "int");
 121 LIN_SDT_PROBE_DEFINE1(time, linux_clock_nanosleep, unsupported_clockid, "int");
 122 LIN_SDT_PROBE_DEFINE1(time, linux_clock_nanosleep, return, "int");
 123
 124
 125 int
 126 native_to_linux_timespec(struct l_timespec *ltp, struct timespec *ntp)
 127 {
 128
 129         LIN_SDT_PROBE2(time, native_to_linux_timespec, entry, ltp, ntp);
 130 #ifdef COMPAT_LINUX32
 131         if (ntp->tv_sec > INT_MAX || ntp->tv_sec < INT_MIN)
 132                 return (EOVERFLOW);
 133 #endif
 134         ltp->tv_sec = ntp->tv_sec;
 135         ltp->tv_nsec = ntp->tv_nsec;
 136
 137         LIN_SDT_PROBE0(time, native_to_linux_timespec, return);
 138         return (0);
 139 }
 140
 141 int
 142 linux_to_native_timespec(struct timespec *ntp, struct l_timespec *ltp)
 143 {
 144
 145         LIN_SDT_PROBE2(time, linux_to_native_timespec, entry, ntp, ltp);
 146
 147         if (ltp->tv_sec < 0 || ltp->tv_nsec < 0 || ltp->tv_nsec > 999999999) {
 148                 LIN_SDT_PROBE1(time, linux_to_native_timespec, return, EINVAL);
 149                 return (EINVAL);
 150         }
 151         ntp->tv_sec = ltp->tv_sec;
 152         ntp->tv_nsec = ltp->tv_nsec;
 153
 154         LIN_SDT_PROBE1(time, linux_to_native_timespec, return, 0);
 155         return (0);
 156 }
 157
 158 int
 159 native_to_linux_itimerspec(struct l_itimerspec *ltp, struct itimerspec *ntp)
 160 {
 161         int error;
 162
 163         error = native_to_linux_timespec(&ltp->it_interval, &ntp->it_interval);
 164         if (error == 0)
 165                 error = native_to_linux_timespec(&ltp->it_value, &ntp->it_interval);
 166         return (error);
 167 }
 168
 169 int
 170 linux_to_native_itimerspec(struct itimerspec *ntp, struct l_itimerspec *ltp)
 171 {
 172         int error;
 173
 174         error = linux_to_native_timespec(&ntp->it_interval, &ltp->it_interval);
 175         if (error == 0)
 176                 error = linux_to_native_timespec(&ntp->it_value, &ltp->it_value);
 177         return (error);
 178 }
 179
 180 int
 181 linux_to_native_clockid(clockid_t *n, clockid_t l)
 182 {
 183
 184         LIN_SDT_PROBE2(time, linux_to_native_clockid, entry, n, l);
 185
 186         if (l < 0) {
 187                 /* cpu-clock */
 188                 if ((l & LINUX_CLOCKFD_MASK) == LINUX_CLOCKFD)
 189                         return (EINVAL);
 190                 if (LINUX_CPUCLOCK_WHICH(l) >= LINUX_CPUCLOCK_MAX)
 191                         return (EINVAL);
 192
 193                 if (LINUX_CPUCLOCK_PERTHREAD(l))
 194                         *n = CLOCK_THREAD_CPUTIME_ID;
 195                 else
 196                         *n = CLOCK_PROCESS_CPUTIME_ID;
 197                 return (0);
 198         }
 199
 200         switch (l) {
 201         case LINUX_CLOCK_REALTIME:
 202                 *n = CLOCK_REALTIME;
 203                 break;
 204         case LINUX_CLOCK_MONOTONIC:
 205                 *n = CLOCK_MONOTONIC;
 206                 break;
 207         case LINUX_CLOCK_PROCESS_CPUTIME_ID:
 208                 *n = CLOCK_PROCESS_CPUTIME_ID;
 209                 break;
 210         case LINUX_CLOCK_THREAD_CPUTIME_ID:
 211                 *n = CLOCK_THREAD_CPUTIME_ID;
 212                 break;
 213         case LINUX_CLOCK_REALTIME_COARSE:
 214                 *n = CLOCK_REALTIME_FAST;
 215                 break;
 216         case LINUX_CLOCK_MONOTONIC_COARSE:
 217                 *n = CLOCK_MONOTONIC_FAST;
 218                 break;
 219         case LINUX_CLOCK_BOOTTIME:
 220                 *n = CLOCK_UPTIME;
 221                 break;
 222         case LINUX_CLOCK_MONOTONIC_RAW:
 223         case LINUX_CLOCK_REALTIME_ALARM:
 224         case LINUX_CLOCK_BOOTTIME_ALARM:
 225         case LINUX_CLOCK_SGI_CYCLE:
 226         case LINUX_CLOCK_TAI:
 227                 LIN_SDT_PROBE1(time, linux_to_native_clockid,
 228                     unsupported_clockid, l);
 229                 LIN_SDT_PROBE1(time, linux_to_native_clockid, return, EINVAL);
 230                 return (EINVAL);
 231         default:
 232                 LIN_SDT_PROBE1(time, linux_to_native_clockid,
 233                     unknown_clockid, l);
 234                 LIN_SDT_PROBE1(time, linux_to_native_clockid, return, EINVAL);
 235                 return (EINVAL);
 236         }
 237
 238         LIN_SDT_PROBE1(time, linux_to_native_clockid, return, 0);
 239         return (0);
 240 }
 241
 242 int
 243 linux_to_native_timerflags(int *nflags, int flags)
 244 {
 245
 246         if (flags & ~LINUX_TIMER_ABSTIME)
 247                 return (EINVAL);
 248         *nflags = 0;
 249         if (flags & LINUX_TIMER_ABSTIME)
 250                 *nflags |= TIMER_ABSTIME;
 251         return (0);
 252 }
 253
 254 int
 255 linux_clock_gettime(struct thread *td, struct linux_clock_gettime_args *args)
 256 {
 257         struct l_timespec lts;
 258         struct timespec tp;
 259         struct rusage ru;
 260         struct thread *targettd;
 261         struct proc *p;
 262         int error, clockwhich;
 263         clockid_t nwhich;
 264         pid_t pid;
 265         lwpid_t tid;
 266
 267         LIN_SDT_PROBE2(time, linux_clock_gettime, entry, args->which, args->tp);
 268
 269         error = linux_to_native_clockid(&nwhich, args->which);
 270         if (error != 0) {
 271                 LIN_SDT_PROBE1(time, linux_clock_gettime, conversion_error,
 272                     error);
 273                 LIN_SDT_PROBE1(time, linux_clock_gettime, return, error);
 274                 return (error);
 275         }
 276
 277         switch (nwhich) {
 278         case CLOCK_PROCESS_CPUTIME_ID:
 279                 if (args->which < 0) {
 280                         clockwhich = LINUX_CPUCLOCK_WHICH(args->which);
 281                         pid = LINUX_CPUCLOCK_ID(args->which);
 282                 } else {
 283                         clockwhich = LINUX_CPUCLOCK_SCHED;
 284                         pid = 0;
 285                 }
 286                 if (pid == 0) {
 287                         p = td->td_proc;
 288                         PROC_LOCK(p);
 289                 } else {
 290                         error = pget(pid, PGET_CANSEE, &p);
 291                         if (error != 0)
 292                                 return (EINVAL);
 293                 }
 294                 switch (clockwhich) {
 295                 case LINUX_CPUCLOCK_PROF:
 296                         PROC_STATLOCK(p);
 297                         calcru(p, &ru.ru_utime, &ru.ru_stime);
 298                         PROC_STATUNLOCK(p);
 299                         PROC_UNLOCK(p);
 300                         timevaladd(&ru.ru_utime, &ru.ru_stime);
 301                         TIMEVAL_TO_TIMESPEC(&ru.ru_utime, &tp);
 302                         break;
 303                 case LINUX_CPUCLOCK_VIRT:
 304                         PROC_STATLOCK(p);
 305                         calcru(p, &ru.ru_utime, &ru.ru_stime);
 306                         PROC_STATUNLOCK(p);
 307                         PROC_UNLOCK(p);
 308                         TIMEVAL_TO_TIMESPEC(&ru.ru_utime, &tp);
 309                         break;
 310                 case LINUX_CPUCLOCK_SCHED:
 311                         kern_process_cputime(p, &tp);
 312                         PROC_UNLOCK(p);
 313                         break;
 314                 default:
 315                         PROC_UNLOCK(p);
 316                         return (EINVAL);
 317                 }
 318
 319                 break;
 320
 321         case CLOCK_THREAD_CPUTIME_ID:
 322                 if (args->which < 0) {
 323                         clockwhich = LINUX_CPUCLOCK_WHICH(args->which);
 324                         tid = LINUX_CPUCLOCK_ID(args->which);
 325                 } else {
 326                         clockwhich = LINUX_CPUCLOCK_SCHED;
 327                         tid = 0;
 328                 }
 329                 p = td->td_proc;
 330                 if (tid == 0) {
 331                         targettd = td;
 332                         PROC_LOCK(p);
 333                 } else {
 334                         targettd = linux_tdfind(td, tid, p->p_pid);
 335                         if (targettd == NULL)
 336                                 return (EINVAL);
 337                 }
 338                 switch (clockwhich) {
 339                 case LINUX_CPUCLOCK_PROF:
 340                         PROC_STATLOCK(p);
 341                         thread_lock(targettd);
 342                         rufetchtd(targettd, &ru);
 343                         thread_unlock(targettd);
 344                         PROC_STATUNLOCK(p);
 345                         PROC_UNLOCK(p);
 346                         timevaladd(&ru.ru_utime, &ru.ru_stime);
 347                         TIMEVAL_TO_TIMESPEC(&ru.ru_utime, &tp);
 348                         break;
 349                 case LINUX_CPUCLOCK_VIRT:
 350                         PROC_STATLOCK(p);
 351                         thread_lock(targettd);
 352                         rufetchtd(targettd, &ru);
 353                         thread_unlock(targettd);
 354                         PROC_STATUNLOCK(p);
 355                         PROC_UNLOCK(p);
 356                         TIMEVAL_TO_TIMESPEC(&ru.ru_utime, &tp);
 357                         break;
 358                 case LINUX_CPUCLOCK_SCHED:
 359                         if (td == targettd)
 360                                 targettd = NULL;
 361                         kern_thread_cputime(targettd, &tp);
 362                         PROC_UNLOCK(p);
 363                         break;
 364                 default:
 365                         PROC_UNLOCK(p);
 366                         return (EINVAL);
 367                 }
 368                 break;
 369
 370         default:
 371                 error = kern_clock_gettime(td, nwhich, &tp);
 372                 break;
 373         }
 374         if (error != 0) {
 375                 LIN_SDT_PROBE1(time, linux_clock_gettime, gettime_error, error);
 376                 LIN_SDT_PROBE1(time, linux_clock_gettime, return, error);
 377                 return (error);
 378         }
 379         error = native_to_linux_timespec(&lts, &tp);
 380         if (error != 0)
 381                 return (error);
 382         error = copyout(&lts, args->tp, sizeof lts);
 383         if (error != 0)
 384                 LIN_SDT_PROBE1(time, linux_clock_gettime, copyout_error, error);
 385
 386         LIN_SDT_PROBE1(time, linux_clock_gettime, return, error);
 387         return (error);
 388 }
 389
 390 int
 391 linux_clock_settime(struct thread *td, struct linux_clock_settime_args *args)
 392 {
 393         struct timespec ts;
 394         struct l_timespec lts;
 395         int error;
 396         clockid_t nwhich;
 397
 398         LIN_SDT_PROBE2(time, linux_clock_settime, entry, args->which, args->tp);
 399
 400         error = linux_to_native_clockid(&nwhich, args->which);
 401         if (error != 0) {
 402                 LIN_SDT_PROBE1(time, linux_clock_settime, conversion_error,
 403                     error);
 404                 LIN_SDT_PROBE1(time, linux_clock_settime, return, error);
 405                 return (error);
 406         }
 407         error = copyin(args->tp, &lts, sizeof lts);
 408         if (error != 0) {
 409                 LIN_SDT_PROBE1(time, linux_clock_settime, copyin_error, error);
 410                 LIN_SDT_PROBE1(time, linux_clock_settime, return, error);
 411                 return (error);
 412         }
 413         error = linux_to_native_timespec(&ts, &lts);
 414         if (error != 0) {
 415                 LIN_SDT_PROBE1(time, linux_clock_settime, conversion_error,
 416                     error);
 417                 LIN_SDT_PROBE1(time, linux_clock_settime, return, error);
 418                 return (error);
 419         }
 420
 421         error = kern_clock_settime(td, nwhich, &ts);
 422         if (error != 0)
 423                 LIN_SDT_PROBE1(time, linux_clock_settime, settime_error, error);
 424
 425         LIN_SDT_PROBE1(time, linux_clock_settime, return, error);
 426         return (error);
 427 }
 428
 429 int
 430 linux_clock_getres(struct thread *td, struct linux_clock_getres_args *args)
 431 {
 432         struct proc *p;
 433         struct timespec ts;
 434         struct l_timespec lts;
 435         int error, clockwhich;
 436         clockid_t nwhich;
 437         pid_t pid;
 438         lwpid_t tid;
 439
 440         LIN_SDT_PROBE2(time, linux_clock_getres, entry, args->which, args->tp);
 441
 442         error = linux_to_native_clockid(&nwhich, args->which);
 443         if (error != 0) {
 444                 LIN_SDT_PROBE1(time, linux_clock_getres, conversion_error,
 445                     error);
 446                 LIN_SDT_PROBE1(time, linux_clock_getres, return, error);
 447                 return (error);
 448         }
 449
 450         /*
 451          * Check user supplied clock id in case of per-process
 452          * or thread-specific cpu-time clock.
 453          */
 454         if (args->which < 0) {
 455                 switch (nwhich) {
 456                 case CLOCK_THREAD_CPUTIME_ID:
 457                         tid = LINUX_CPUCLOCK_ID(args->which);
 458                         if (tid != 0) {
 459                                 p = td->td_proc;
 460                                 if (linux_tdfind(td, tid, p->p_pid) == NULL)
 461                                         return (EINVAL);
 462                                 PROC_UNLOCK(p);
 463                         }
 464                         break;
 465                 case CLOCK_PROCESS_CPUTIME_ID:
 466                         pid = LINUX_CPUCLOCK_ID(args->which);
 467                         if (pid != 0) {
 468                                 error = pget(pid, PGET_CANSEE, &p);
 469                                 if (error != 0)
 470                                         return (EINVAL);
 471                                 PROC_UNLOCK(p);
 472                         }
 473                         break;
 474                 }
 475         }
 476
 477         if (args->tp == NULL) {
 478                 LIN_SDT_PROBE0(time, linux_clock_getres, nullcall);
 479                 LIN_SDT_PROBE1(time, linux_clock_getres, return, 0);
 480                 return (0);
 481         }
 482
 483         switch (nwhich) {
 484         case CLOCK_THREAD_CPUTIME_ID:
 485         case CLOCK_PROCESS_CPUTIME_ID:
 486                 clockwhich = LINUX_CPUCLOCK_WHICH(args->which);
 487                 /*
 488                  * In both cases (when the clock id obtained by a call to
 489                  * clock_getcpuclockid() or using the clock
 490                  * ID CLOCK_PROCESS_CPUTIME_ID Linux hardcodes precision
 491                  * of clock. The same for the CLOCK_THREAD_CPUTIME_ID clock.
 492                  *
 493                  * See Linux posix_cpu_clock_getres() implementation.
 494                  */
 495                 if (args->which > 0 || clockwhich == LINUX_CPUCLOCK_SCHED) {
 496                         ts.tv_sec = 0;
 497                         ts.tv_nsec = 1;
 498                         goto out;
 499                 }
 500
 501                 switch (clockwhich) {
 502                 case LINUX_CPUCLOCK_PROF:
 503                         nwhich = CLOCK_PROF;
 504                         break;
 505                 case LINUX_CPUCLOCK_VIRT:
 506                         nwhich = CLOCK_VIRTUAL;
 507                         break;
 508                 default:
 509                         return (EINVAL);
 510                 }
 511                 break;
 512
 513         default:
 514                 break;
 515         }
 516         error = kern_clock_getres(td, nwhich, &ts);
 517         if (error != 0) {
 518                 LIN_SDT_PROBE1(time, linux_clock_getres, getres_error, error);
 519                 LIN_SDT_PROBE1(time, linux_clock_getres, return, error);
 520                 return (error);
 521         }
 522
 523 out:
 524         error = native_to_linux_timespec(&lts, &ts);
 525         if (error != 0)
 526                 return (error);
 527         error = copyout(&lts, args->tp, sizeof lts);
 528         if (error != 0)
 529                 LIN_SDT_PROBE1(time, linux_clock_getres, copyout_error, error);
 530
 531         LIN_SDT_PROBE1(time, linux_clock_getres, return, error);
 532         return (error);
 533 }
 534
 535 int
 536 linux_nanosleep(struct thread *td, struct linux_nanosleep_args *args)
 537 {
 538         struct timespec *rmtp;
 539         struct l_timespec lrqts, lrmts;
 540         struct timespec rqts, rmts;
 541         int error, error2;
 542
 543         LIN_SDT_PROBE2(time, linux_nanosleep, entry, args->rqtp, args->rmtp);
 544
 545         error = copyin(args->rqtp, &lrqts, sizeof lrqts);
 546         if (error != 0) {
 547                 LIN_SDT_PROBE1(time, linux_nanosleep, copyin_error, error);
 548                 LIN_SDT_PROBE1(time, linux_nanosleep, return, error);
 549                 return (error);
 550         }
 551
 552         if (args->rmtp != NULL)
 553                 rmtp = &rmts;
 554         else
 555                 rmtp = NULL;
 556
 557         error = linux_to_native_timespec(&rqts, &lrqts);
 558         if (error != 0) {
 559                 LIN_SDT_PROBE1(time, linux_nanosleep, conversion_error, error);
 560                 LIN_SDT_PROBE1(time, linux_nanosleep, return, error);
 561                 return (error);
 562         }
 563         error = kern_nanosleep(td, &rqts, rmtp);
 564         if (error == EINTR && args->rmtp != NULL) {
 565                 error2 = native_to_linux_timespec(&lrmts, rmtp);
 566                 if (error2 != 0)
 567                         return (error2);
 568                 error2 = copyout(&lrmts, args->rmtp, sizeof(lrmts));
 569                 if (error2 != 0) {
 570                         LIN_SDT_PROBE1(time, linux_nanosleep, copyout_error,
 571                             error2);
 572                         LIN_SDT_PROBE1(time, linux_nanosleep, return, error2);
 573                         return (error2);
 574                 }
 575         }
 576
 577         LIN_SDT_PROBE1(time, linux_nanosleep, return, error);
 578         return (error);
 579 }
 580
 581 int
 582 linux_clock_nanosleep(struct thread *td, struct linux_clock_nanosleep_args *args)
 583 {
 584         struct timespec *rmtp;
 585         struct l_timespec lrqts, lrmts;
 586         struct timespec rqts, rmts;
 587         int error, error2, flags;
 588         clockid_t clockid;
 589
 590         LIN_SDT_PROBE4(time, linux_clock_nanosleep, entry, args->which,
 591             args->flags, args->rqtp, args->rmtp);
 592
 593         error = linux_to_native_timerflags(&flags, args->flags);
 594         if (error != 0) {
 595                 LIN_SDT_PROBE1(time, linux_clock_nanosleep, unsupported_flags,
 596                     args->flags);
 597                 LIN_SDT_PROBE1(time, linux_clock_nanosleep, return, error);
 598                 return (error);
 599         }
 600
 601         error = linux_to_native_clockid(&clockid, args->which);
 602         if (error != 0) {
 603                 LIN_SDT_PROBE1(time, linux_clock_nanosleep, unsupported_clockid,
 604                     args->which);
 605                 LIN_SDT_PROBE1(time, linux_clock_settime, return, error);
 606                 return (error);
 607         }
 608
 609         error = copyin(args->rqtp, &lrqts, sizeof(lrqts));
 610         if (error != 0) {
 611                 LIN_SDT_PROBE1(time, linux_clock_nanosleep, copyin_error,
 612                     error);
 613                 LIN_SDT_PROBE1(time, linux_clock_nanosleep, return, error);
 614                 return (error);
 615         }
 616
 617         if (args->rmtp != NULL)
 618                 rmtp = &rmts;
 619         else
 620                 rmtp = NULL;
 621
 622         error = linux_to_native_timespec(&rqts, &lrqts);
 623         if (error != 0) {
 624                 LIN_SDT_PROBE1(time, linux_clock_nanosleep, conversion_error,
 625                     error);
 626                 LIN_SDT_PROBE1(time, linux_clock_nanosleep, return, error);
 627                 return (error);
 628         }
 629         error = kern_clock_nanosleep(td, clockid, flags, &rqts, rmtp);
 630         if (error == EINTR && (flags & TIMER_ABSTIME) == 0 &&
 631             args->rmtp != NULL) {
 632                 error2 = native_to_linux_timespec(&lrmts, rmtp);
 633                 if (error2 != 0)
 634                         return (error2);
 635                 error2 = copyout(&lrmts, args->rmtp, sizeof(lrmts));
 636                 if (error2 != 0) {
 637                         LIN_SDT_PROBE1(time, linux_clock_nanosleep,
 638                             copyout_error, error2);
 639                         LIN_SDT_PROBE1(time, linux_clock_nanosleep,
 640                             return, error2);
 641                         return (error2);
 642                 }
 643         }
 644
 645         LIN_SDT_PROBE1(time, linux_clock_nanosleep, return, error);
 646         return (error);
 647 }