The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/compat/linux/linux_time.c

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    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: releng/11.2/sys/compat/linux/linux_time.c 317637 2017-05-01 06:42:39Z dchagin $");
   34 #if 0
   35 __KERNEL_RCSID(0, "$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 || ltp->tv_nsec < 0 || ltp->tv_nsec > 999999999) {
  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_BOOTTIME:
  211                 *n = CLOCK_UPTIME;
  212                 break;
  213         case LINUX_CLOCK_MONOTONIC_RAW:
  214         case LINUX_CLOCK_REALTIME_ALARM:
  215         case LINUX_CLOCK_BOOTTIME_ALARM:
  216         case LINUX_CLOCK_SGI_CYCLE:
  217         case LINUX_CLOCK_TAI:
  218                 LIN_SDT_PROBE1(time, linux_to_native_clockid,
  219                     unsupported_clockid, l);
  220                 LIN_SDT_PROBE1(time, linux_to_native_clockid, return, EINVAL);
  221                 return (EINVAL);
  222         default:
  223                 LIN_SDT_PROBE1(time, linux_to_native_clockid,
  224                     unknown_clockid, l);
  225                 LIN_SDT_PROBE1(time, linux_to_native_clockid, return, EINVAL);
  226                 return (EINVAL);
  227         }
  228 
  229         LIN_SDT_PROBE1(time, linux_to_native_clockid, return, 0);
  230         return (0);
  231 }
  232 
  233 int
  234 linux_to_native_timerflags(int *nflags, int flags)
  235 {
  236 
  237         if (flags & ~LINUX_TIMER_ABSTIME)
  238                 return (EINVAL);
  239         *nflags = 0;
  240         if (flags & LINUX_TIMER_ABSTIME)
  241                 *nflags |= TIMER_ABSTIME;
  242         return (0);
  243 }
  244 
  245 int
  246 linux_clock_gettime(struct thread *td, struct linux_clock_gettime_args *args)
  247 {
  248         struct l_timespec lts;
  249         struct timespec tp;
  250         struct rusage ru;
  251         struct thread *targettd;
  252         struct proc *p;
  253         int error, clockwhich;
  254         clockid_t nwhich = 0;   /* XXX: GCC */
  255         pid_t pid;
  256         lwpid_t tid;
  257 
  258         LIN_SDT_PROBE2(time, linux_clock_gettime, entry, args->which, args->tp);
  259 
  260         error = linux_to_native_clockid(&nwhich, args->which);
  261         if (error != 0) {
  262                 LIN_SDT_PROBE1(time, linux_clock_gettime, conversion_error,
  263                     error);
  264                 LIN_SDT_PROBE1(time, linux_clock_gettime, return, error);
  265                 return (error);
  266         }
  267 
  268         switch (nwhich) {
  269         case CLOCK_PROCESS_CPUTIME_ID:
  270                 clockwhich = LINUX_CPUCLOCK_WHICH(args->which);
  271                 pid = LINUX_CPUCLOCK_ID(args->which);
  272                 if (pid == 0) {
  273                         p = td->td_proc;
  274                         PROC_LOCK(p);
  275                 } else {
  276                         error = pget(pid, PGET_CANSEE, &p);
  277                         if (error != 0)
  278                                 return (EINVAL);
  279                 }
  280                 switch (clockwhich) {
  281                 case LINUX_CPUCLOCK_PROF:
  282                         PROC_STATLOCK(p);
  283                         calcru(p, &ru.ru_utime, &ru.ru_stime);
  284                         PROC_STATUNLOCK(p);
  285                         PROC_UNLOCK(p);
  286                         timevaladd(&ru.ru_utime, &ru.ru_stime);
  287                         TIMEVAL_TO_TIMESPEC(&ru.ru_utime, &tp);
  288                         break;
  289                 case LINUX_CPUCLOCK_VIRT:
  290                         PROC_STATLOCK(p);
  291                         calcru(p, &ru.ru_utime, &ru.ru_stime);
  292                         PROC_STATUNLOCK(p);
  293                         PROC_UNLOCK(p);
  294                         TIMEVAL_TO_TIMESPEC(&ru.ru_utime, &tp);
  295                         break;
  296                 case LINUX_CPUCLOCK_SCHED:
  297                         PROC_UNLOCK(p);
  298                         error = kern_clock_getcpuclockid2(td, pid,
  299                             CPUCLOCK_WHICH_PID, &nwhich);
  300                         if (error != 0)
  301                                 return (EINVAL);
  302                         error = kern_clock_gettime(td, nwhich, &tp);
  303                         break;
  304                 default:
  305                         PROC_UNLOCK(p);
  306                         return (EINVAL);
  307                 }
  308 
  309                 break;
  310 
  311         case CLOCK_THREAD_CPUTIME_ID:
  312                 clockwhich = LINUX_CPUCLOCK_WHICH(args->which);
  313                 p = td->td_proc;
  314                 tid = LINUX_CPUCLOCK_ID(args->which);
  315                 if (tid == 0) {
  316                         targettd = td;
  317                         PROC_LOCK(p);
  318                 } else {
  319                         targettd = tdfind(tid, p->p_pid);
  320                         if (targettd == NULL)
  321                                 return (EINVAL);
  322                 }
  323                 switch (clockwhich) {
  324                 case LINUX_CPUCLOCK_PROF:
  325                         PROC_STATLOCK(p);
  326                         thread_lock(targettd);
  327                         rufetchtd(targettd, &ru);
  328                         thread_unlock(targettd);
  329                         PROC_STATUNLOCK(p);
  330                         PROC_UNLOCK(p);
  331                         timevaladd(&ru.ru_utime, &ru.ru_stime);
  332                         TIMEVAL_TO_TIMESPEC(&ru.ru_utime, &tp);
  333                         break;
  334                 case LINUX_CPUCLOCK_VIRT:
  335                         PROC_STATLOCK(p);
  336                         thread_lock(targettd);
  337                         rufetchtd(targettd, &ru);
  338                         thread_unlock(targettd);
  339                         PROC_STATUNLOCK(p);
  340                         PROC_UNLOCK(p);
  341                         TIMEVAL_TO_TIMESPEC(&ru.ru_utime, &tp);
  342                         break;
  343                 case LINUX_CPUCLOCK_SCHED:
  344                         error = kern_clock_getcpuclockid2(td, tid,
  345                             CPUCLOCK_WHICH_TID, &nwhich);
  346                         PROC_UNLOCK(p);
  347                         if (error != 0)
  348                                 return (EINVAL);
  349                         error = kern_clock_gettime(td, nwhich, &tp);
  350                         break;
  351                 default:
  352                         PROC_UNLOCK(p);
  353                         return (EINVAL);
  354                 }
  355                 break;
  356 
  357         default:
  358                 error = kern_clock_gettime(td, nwhich, &tp);
  359                 break;
  360         }
  361         if (error != 0) {
  362                 LIN_SDT_PROBE1(time, linux_clock_gettime, gettime_error, error);
  363                 LIN_SDT_PROBE1(time, linux_clock_gettime, return, error);
  364                 return (error);
  365         }
  366         error = native_to_linux_timespec(&lts, &tp);
  367         if (error != 0)
  368                 return (error);
  369         error = copyout(&lts, args->tp, sizeof lts);
  370         if (error != 0)
  371                 LIN_SDT_PROBE1(time, linux_clock_gettime, copyout_error, error);
  372 
  373         LIN_SDT_PROBE1(time, linux_clock_gettime, return, error);
  374         return (error);
  375 }
  376 
  377 int
  378 linux_clock_settime(struct thread *td, struct linux_clock_settime_args *args)
  379 {
  380         struct timespec ts;
  381         struct l_timespec lts;
  382         int error;
  383         clockid_t nwhich = 0;   /* XXX: GCC */
  384 
  385         LIN_SDT_PROBE2(time, linux_clock_settime, entry, args->which, args->tp);
  386 
  387         error = linux_to_native_clockid(&nwhich, args->which);
  388         if (error != 0) {
  389                 LIN_SDT_PROBE1(time, linux_clock_settime, conversion_error,
  390                     error);
  391                 LIN_SDT_PROBE1(time, linux_clock_settime, return, error);
  392                 return (error);
  393         }
  394         error = copyin(args->tp, &lts, sizeof lts);
  395         if (error != 0) {
  396                 LIN_SDT_PROBE1(time, linux_clock_settime, copyin_error, error);
  397                 LIN_SDT_PROBE1(time, linux_clock_settime, return, error);
  398                 return (error);
  399         }
  400         error = linux_to_native_timespec(&ts, &lts);
  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 
  408         error = kern_clock_settime(td, nwhich, &ts);
  409         if (error != 0)
  410                 LIN_SDT_PROBE1(time, linux_clock_settime, settime_error, error);
  411 
  412         LIN_SDT_PROBE1(time, linux_clock_settime, return, error);
  413         return (error);
  414 }
  415 
  416 int
  417 linux_clock_getres(struct thread *td, struct linux_clock_getres_args *args)
  418 {
  419         struct proc *p;
  420         struct timespec ts;
  421         struct l_timespec lts;
  422         int error, clockwhich;
  423         clockid_t nwhich = 0;   /* XXX: GCC */
  424         pid_t pid;
  425         lwpid_t tid;
  426 
  427         LIN_SDT_PROBE2(time, linux_clock_getres, entry, args->which, args->tp);
  428 
  429         error = linux_to_native_clockid(&nwhich, args->which);
  430         if (error != 0) {
  431                 LIN_SDT_PROBE1(time, linux_clock_getres, conversion_error,
  432                     error);
  433                 LIN_SDT_PROBE1(time, linux_clock_getres, return, error);
  434                 return (error);
  435         }
  436 
  437         /*
  438          * Check user supplied clock id in case of per-process 
  439          * or thread-specific cpu-time clock.
  440          */
  441         switch (nwhich) {
  442         case CLOCK_THREAD_CPUTIME_ID:
  443                 tid = LINUX_CPUCLOCK_ID(args->which);
  444                 if (tid != 0) {
  445                         p = td->td_proc;
  446                         if (tdfind(tid, p->p_pid) == NULL)
  447                                 return (ESRCH);
  448                         PROC_UNLOCK(p);
  449                 }
  450                 break;
  451         case CLOCK_PROCESS_CPUTIME_ID:
  452                 pid = LINUX_CPUCLOCK_ID(args->which);
  453                 if (pid != 0) {
  454                         error = pget(pid, PGET_CANSEE, &p);
  455                         if (error != 0)
  456                                 return (EINVAL);
  457                         PROC_UNLOCK(p);
  458                 }
  459                 break;
  460         }
  461 
  462         if (args->tp == NULL) {
  463                 LIN_SDT_PROBE0(time, linux_clock_getres, nullcall);
  464                 LIN_SDT_PROBE1(time, linux_clock_getres, return, 0);
  465                 return (0);
  466         }
  467 
  468         switch (nwhich) {
  469         case CLOCK_THREAD_CPUTIME_ID:
  470         case CLOCK_PROCESS_CPUTIME_ID:
  471                 clockwhich = LINUX_CPUCLOCK_WHICH(args->which);
  472                 switch (clockwhich) {
  473                 case LINUX_CPUCLOCK_PROF:
  474                         nwhich = CLOCK_PROF;
  475                         break;
  476                 case LINUX_CPUCLOCK_VIRT:
  477                         nwhich = CLOCK_VIRTUAL;
  478                         break;
  479                 case LINUX_CPUCLOCK_SCHED:
  480                         break;
  481                 default:
  482                         return (EINVAL);
  483                 }
  484                 break;
  485 
  486         default:
  487                 break;
  488         }
  489         error = kern_clock_getres(td, nwhich, &ts);
  490         if (error != 0) {
  491                 LIN_SDT_PROBE1(time, linux_clock_getres, getres_error, error);
  492                 LIN_SDT_PROBE1(time, linux_clock_getres, return, error);
  493                 return (error);
  494         }
  495         error = native_to_linux_timespec(&lts, &ts);
  496         if (error != 0)
  497                 return (error);
  498         error = copyout(&lts, args->tp, sizeof lts);
  499         if (error != 0)
  500                 LIN_SDT_PROBE1(time, linux_clock_getres, copyout_error, error);
  501 
  502         LIN_SDT_PROBE1(time, linux_clock_getres, return, error);
  503         return (error);
  504 }
  505 
  506 int
  507 linux_nanosleep(struct thread *td, struct linux_nanosleep_args *args)
  508 {
  509         struct timespec *rmtp;
  510         struct l_timespec lrqts, lrmts;
  511         struct timespec rqts, rmts;
  512         int error, error2;
  513 
  514         LIN_SDT_PROBE2(time, linux_nanosleep, entry, args->rqtp, args->rmtp);
  515 
  516         error = copyin(args->rqtp, &lrqts, sizeof lrqts);
  517         if (error != 0) {
  518                 LIN_SDT_PROBE1(time, linux_nanosleep, copyin_error, error);
  519                 LIN_SDT_PROBE1(time, linux_nanosleep, return, error);
  520                 return (error);
  521         }
  522 
  523         if (args->rmtp != NULL)
  524                 rmtp = &rmts;
  525         else
  526                 rmtp = NULL;
  527 
  528         error = linux_to_native_timespec(&rqts, &lrqts);
  529         if (error != 0) {
  530                 LIN_SDT_PROBE1(time, linux_nanosleep, conversion_error, error);
  531                 LIN_SDT_PROBE1(time, linux_nanosleep, return, error);
  532                 return (error);
  533         }
  534         error = kern_nanosleep(td, &rqts, rmtp);
  535         if (error == EINTR && args->rmtp != NULL) {
  536                 error2 = native_to_linux_timespec(&lrmts, rmtp);
  537                 if (error2 != 0)
  538                         return (error2);
  539                 error2 = copyout(&lrmts, args->rmtp, sizeof(lrmts));
  540                 if (error2 != 0) {
  541                         LIN_SDT_PROBE1(time, linux_nanosleep, copyout_error,
  542                             error2);
  543                         LIN_SDT_PROBE1(time, linux_nanosleep, return, error2);
  544                         return (error2);
  545                 }
  546         }
  547 
  548         LIN_SDT_PROBE1(time, linux_nanosleep, return, error);
  549         return (error);
  550 }
  551 
  552 int
  553 linux_clock_nanosleep(struct thread *td, struct linux_clock_nanosleep_args *args)
  554 {
  555         struct timespec *rmtp;
  556         struct l_timespec lrqts, lrmts;
  557         struct timespec rqts, rmts;
  558         int error, error2, flags;
  559         clockid_t clockid;
  560 
  561         LIN_SDT_PROBE4(time, linux_clock_nanosleep, entry, args->which,
  562             args->flags, args->rqtp, args->rmtp);
  563 
  564         error = linux_to_native_timerflags(&flags, args->flags);
  565         if (error != 0) {
  566                 LIN_SDT_PROBE1(time, linux_clock_nanosleep, unsupported_flags,
  567                     args->flags);
  568                 LIN_SDT_PROBE1(time, linux_clock_nanosleep, return, error);
  569                 return (error);
  570         }
  571 
  572         error = linux_to_native_clockid(&clockid, args->which);
  573         if (error != 0) {
  574                 LIN_SDT_PROBE1(time, linux_clock_nanosleep, unsupported_clockid,
  575                     args->which);
  576                 LIN_SDT_PROBE1(time, linux_clock_settime, return, error);
  577                 return (error);
  578         }
  579 
  580         error = copyin(args->rqtp, &lrqts, sizeof(lrqts));
  581         if (error != 0) {
  582                 LIN_SDT_PROBE1(time, linux_clock_nanosleep, copyin_error,
  583                     error);
  584                 LIN_SDT_PROBE1(time, linux_clock_nanosleep, return, error);
  585                 return (error);
  586         }
  587 
  588         if (args->rmtp != NULL)
  589                 rmtp = &rmts;
  590         else
  591                 rmtp = NULL;
  592 
  593         error = linux_to_native_timespec(&rqts, &lrqts);
  594         if (error != 0) {
  595                 LIN_SDT_PROBE1(time, linux_clock_nanosleep, conversion_error,
  596                     error);
  597                 LIN_SDT_PROBE1(time, linux_clock_nanosleep, return, error);
  598                 return (error);
  599         }
  600         error = kern_clock_nanosleep(td, clockid, flags, &rqts, rmtp);
  601         if (error == EINTR && (flags & TIMER_ABSTIME) == 0 &&
  602             args->rmtp != NULL) {
  603                 error2 = native_to_linux_timespec(&lrmts, rmtp);
  604                 if (error2 != 0)
  605                         return (error2);
  606                 error2 = copyout(&lrmts, args->rmtp, sizeof(lrmts));
  607                 if (error2 != 0) {
  608                         LIN_SDT_PROBE1(time, linux_clock_nanosleep,
  609                             copyout_error, error2);
  610                         LIN_SDT_PROBE1(time, linux_clock_nanosleep,
  611                             return, error2);
  612                         return (error2);
  613                 }
  614         }
  615 
  616         LIN_SDT_PROBE1(time, linux_clock_nanosleep, return, error);
  617         return (error);
  618 }

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