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(<p->it_interval, &ntp->it_interval); 164 if (error == 0) 165 error = native_to_linux_timespec(<p->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, <p->it_interval); 175 if (error == 0) 176 error = linux_to_native_timespec(&ntp->it_value, <p->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(<s, &tp); 380 if (error != 0) 381 return (error); 382 error = copyout(<s, 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, <s, 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, <s); 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(<s, &ts); 525 if (error != 0) 526 return (error); 527 error = copyout(<s, 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 } 648