1 /* $NetBSD: netbsd32_time.c,v 1.53 2019/10/05 14:19:53 kamil Exp $ */ 2 3 /* 4 * Copyright (c) 1998, 2001 Matthew R. Green 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __KERNEL_RCSID(0, "$NetBSD: netbsd32_time.c,v 1.53 2019/10/05 14:19:53 kamil Exp $"); 31 32 #if defined(_KERNEL_OPT) 33 #include "opt_ntp.h" 34 #include "opt_compat_netbsd.h" 35 #endif 36 37 #include <sys/param.h> 38 #include <sys/systm.h> 39 #include <sys/mount.h> 40 #include <sys/time.h> 41 #include <sys/timex.h> 42 #include <sys/timevar.h> 43 #include <sys/proc.h> 44 #include <sys/pool.h> 45 #include <sys/resourcevar.h> 46 #include <sys/dirent.h> 47 #include <sys/kauth.h> 48 #include <sys/compat_stub.h> 49 50 #include <compat/netbsd32/netbsd32.h> 51 #include <compat/netbsd32/netbsd32_syscallargs.h> 52 #include <compat/netbsd32/netbsd32_conv.h> 53 54 #ifdef NTP 55 56 int 57 netbsd32___ntp_gettime50(struct lwp *l, 58 const struct netbsd32___ntp_gettime50_args *uap, register_t *retval) 59 { 60 /* { 61 syscallarg(netbsd32_ntptimevalp_t) ntvp; 62 } */ 63 struct netbsd32_ntptimeval ntv32; 64 struct ntptimeval ntv; 65 int error = 0; 66 67 if (vec_ntp_gettime == NULL) 68 return EINVAL; 69 70 if (SCARG_P32(uap, ntvp)) { 71 (*vec_ntp_gettime)(&ntv); 72 73 memset(&ntv32, 0, sizeof(ntv32)); 74 ntv32.time.tv_sec = ntv.time.tv_sec; 75 ntv32.time.tv_nsec = ntv.time.tv_nsec; 76 ntv32.maxerror = (netbsd32_long)ntv.maxerror; 77 ntv32.esterror = (netbsd32_long)ntv.esterror; 78 ntv32.tai = (netbsd32_long)ntv.tai; 79 ntv32.time_state = ntv.time_state; 80 error = copyout(&ntv32, SCARG_P32(uap, ntvp), sizeof(ntv32)); 81 } 82 if (!error) { 83 *retval = (*vec_ntp_timestatus)(); 84 } 85 86 return (error); 87 } 88 89 int 90 netbsd32_ntp_adjtime(struct lwp *l, const struct netbsd32_ntp_adjtime_args *uap, register_t *retval) 91 { 92 /* { 93 syscallarg(netbsd32_timexp_t) tp; 94 } */ 95 struct netbsd32_timex ntv32; 96 struct timex ntv; 97 int error = 0; 98 int modes; 99 100 if (vec_ntp_adjtime1 == NULL) 101 return EINVAL; 102 103 if ((error = copyin(SCARG_P32(uap, tp), &ntv32, sizeof(ntv32)))) 104 return (error); 105 106 netbsd32_to_timex(&ntv32, &ntv); 107 108 /* 109 * Update selected clock variables - only the superuser can 110 * change anything. Note that there is no error checking here on 111 * the assumption the superuser should know what it is doing. 112 */ 113 modes = ntv.modes; 114 if (modes != 0 && (error = kauth_authorize_system(l->l_cred, 115 KAUTH_SYSTEM_TIME, KAUTH_REQ_SYSTEM_TIME_NTPADJTIME, NULL, NULL, 116 NULL))) 117 return (error); 118 119 (*vec_ntp_adjtime1)(&ntv); 120 121 netbsd32_from_timex(&ntv, &ntv32); 122 error = copyout(&ntv32, SCARG_P32(uap, tp), sizeof(ntv32)); 123 if (!error) { 124 *retval = (*vec_ntp_timestatus)(); 125 } 126 return error; 127 } 128 #endif /* NTP */ 129 130 int 131 netbsd32___setitimer50(struct lwp *l, const struct netbsd32___setitimer50_args *uap, register_t *retval) 132 { 133 /* { 134 syscallarg(int) which; 135 syscallarg(const netbsd32_itimervalp_t) itv; 136 syscallarg(netbsd32_itimervalp_t) oitv; 137 } */ 138 struct proc *p = l->l_proc; 139 struct netbsd32_itimerval s32it, *itv32; 140 int which = SCARG(uap, which); 141 struct netbsd32___getitimer50_args getargs; 142 struct itimerval aitv; 143 int error; 144 145 if ((u_int)which > ITIMER_PROF) 146 return (EINVAL); 147 itv32 = SCARG_P32(uap, itv); 148 if (itv32) { 149 if ((error = copyin(itv32, &s32it, sizeof(s32it)))) 150 return (error); 151 netbsd32_to_itimerval(&s32it, &aitv); 152 } 153 if (SCARG_P32(uap, oitv) != 0) { 154 SCARG(&getargs, which) = which; 155 SCARG(&getargs, itv) = SCARG(uap, oitv); 156 if ((error = netbsd32___getitimer50(l, &getargs, retval)) != 0) 157 return (error); 158 } 159 if (itv32 == 0) 160 return 0; 161 162 return dosetitimer(p, which, &aitv); 163 } 164 165 int 166 netbsd32___getitimer50(struct lwp *l, const struct netbsd32___getitimer50_args *uap, register_t *retval) 167 { 168 /* { 169 syscallarg(int) which; 170 syscallarg(netbsd32_itimervalp_t) itv; 171 } */ 172 struct proc *p = l->l_proc; 173 struct netbsd32_itimerval s32it; 174 struct itimerval aitv; 175 int error; 176 177 error = dogetitimer(p, SCARG(uap, which), &aitv); 178 if (error) 179 return error; 180 181 netbsd32_from_itimerval(&aitv, &s32it); 182 return copyout(&s32it, SCARG_P32(uap, itv), sizeof(s32it)); 183 } 184 185 int 186 netbsd32___gettimeofday50(struct lwp *l, const struct netbsd32___gettimeofday50_args *uap, register_t *retval) 187 { 188 /* { 189 syscallarg(netbsd32_timevalp_t) tp; 190 syscallarg(netbsd32_timezonep_t) tzp; 191 } */ 192 struct timeval atv; 193 struct netbsd32_timeval tv32; 194 int error = 0; 195 struct netbsd32_timezone tzfake; 196 197 if (SCARG_P32(uap, tp)) { 198 microtime(&atv); 199 netbsd32_from_timeval(&atv, &tv32); 200 error = copyout(&tv32, SCARG_P32(uap, tp), sizeof(tv32)); 201 if (error) 202 return (error); 203 } 204 if (SCARG_P32(uap, tzp)) { 205 /* 206 * NetBSD has no kernel notion of time zone, so we just 207 * fake up a timezone struct and return it if demanded. 208 */ 209 tzfake.tz_minuteswest = 0; 210 tzfake.tz_dsttime = 0; 211 error = copyout(&tzfake, SCARG_P32(uap, tzp), sizeof(tzfake)); 212 } 213 return (error); 214 } 215 216 int 217 netbsd32___settimeofday50(struct lwp *l, const struct netbsd32___settimeofday50_args *uap, register_t *retval) 218 { 219 /* { 220 syscallarg(const netbsd32_timevalp_t) tv; 221 syscallarg(const netbsd32_timezonep_t) tzp; 222 } */ 223 struct netbsd32_timeval atv32; 224 struct timeval atv; 225 struct timespec ats; 226 int error; 227 struct proc *p = l->l_proc; 228 229 /* Verify all parameters before changing time. */ 230 231 /* 232 * NetBSD has no kernel notion of time zone, and only an 233 * obsolete program would try to set it, so we log a warning. 234 */ 235 if (SCARG_P32(uap, tzp)) 236 printf("pid %d attempted to set the " 237 "(obsolete) kernel time zone\n", p->p_pid); 238 239 if (SCARG_P32(uap, tv) == 0) 240 return 0; 241 242 if ((error = copyin(SCARG_P32(uap, tv), &atv32, sizeof(atv32))) != 0) 243 return error; 244 245 netbsd32_to_timeval(&atv32, &atv); 246 247 if (atv.tv_usec < 0 || atv.tv_usec >= 1000000) 248 return EINVAL; 249 250 TIMEVAL_TO_TIMESPEC(&atv, &ats); 251 return settime(p, &ats); 252 } 253 254 int 255 netbsd32___adjtime50(struct lwp *l, const struct netbsd32___adjtime50_args *uap, register_t *retval) 256 { 257 /* { 258 syscallarg(const netbsd32_timevalp_t) delta; 259 syscallarg(netbsd32_timevalp_t) olddelta; 260 } */ 261 struct netbsd32_timeval atv; 262 int error; 263 264 extern int time_adjusted; /* in kern_ntptime.c */ 265 extern int64_t time_adjtime; /* in kern_ntptime.c */ 266 267 if ((error = kauth_authorize_system(l->l_cred, 268 KAUTH_SYSTEM_TIME, KAUTH_REQ_SYSTEM_TIME_ADJTIME, NULL, NULL, 269 NULL)) != 0) 270 return (error); 271 272 if (SCARG_P32(uap, olddelta)) { 273 atv.tv_sec = time_adjtime / 1000000; 274 atv.tv_usec = time_adjtime % 1000000; 275 if (atv.tv_usec < 0) { 276 atv.tv_usec += 1000000; 277 atv.tv_sec--; 278 } 279 error = copyout(&atv, SCARG_P32(uap, olddelta), sizeof(atv)); 280 if (error) 281 return (error); 282 } 283 284 if (SCARG_P32(uap, delta)) { 285 error = copyin(SCARG_P32(uap, delta), &atv, sizeof(atv)); 286 if (error) 287 return (error); 288 289 time_adjtime = (int64_t)atv.tv_sec * 1000000 + atv.tv_usec; 290 291 if (time_adjtime) 292 /* We need to save the system time during shutdown */ 293 time_adjusted |= 1; 294 } 295 296 return (0); 297 } 298 299 int 300 netbsd32___clock_gettime50(struct lwp *l, const struct netbsd32___clock_gettime50_args *uap, register_t *retval) 301 { 302 /* { 303 syscallarg(netbsd32_clockid_t) clock_id; 304 syscallarg(netbsd32_timespecp_t) tp; 305 } */ 306 int error; 307 struct timespec ats; 308 struct netbsd32_timespec ts32; 309 310 error = clock_gettime1(SCARG(uap, clock_id), &ats); 311 if (error != 0) 312 return error; 313 314 netbsd32_from_timespec(&ats, &ts32); 315 return copyout(&ts32, SCARG_P32(uap, tp), sizeof(ts32)); 316 } 317 318 int 319 netbsd32___clock_settime50(struct lwp *l, const struct netbsd32___clock_settime50_args *uap, register_t *retval) 320 { 321 /* { 322 syscallarg(netbsd32_clockid_t) clock_id; 323 syscallarg(const netbsd32_timespecp_t) tp; 324 } */ 325 struct netbsd32_timespec ts32; 326 struct timespec ats; 327 int error; 328 329 if ((error = copyin(SCARG_P32(uap, tp), &ts32, sizeof(ts32))) != 0) 330 return (error); 331 332 netbsd32_to_timespec(&ts32, &ats); 333 return clock_settime1(l->l_proc, SCARG(uap, clock_id), &ats, true); 334 } 335 336 int 337 netbsd32___clock_getres50(struct lwp *l, const struct netbsd32___clock_getres50_args *uap, register_t *retval) 338 { 339 /* { 340 syscallarg(netbsd32_clockid_t) clock_id; 341 syscallarg(netbsd32_timespecp_t) tp; 342 } */ 343 struct netbsd32_timespec ts32; 344 struct timespec ts; 345 int error = 0; 346 347 error = clock_getres1(SCARG(uap, clock_id), &ts); 348 if (error != 0) 349 return error; 350 351 if (SCARG_P32(uap, tp)) { 352 netbsd32_from_timespec(&ts, &ts32); 353 error = copyout(&ts32, SCARG_P32(uap, tp), sizeof(ts32)); 354 } 355 356 return error; 357 } 358 359 int 360 netbsd32___nanosleep50(struct lwp *l, const struct netbsd32___nanosleep50_args *uap, register_t *retval) 361 { 362 /* { 363 syscallarg(const netbsd32_timespecp_t) rqtp; 364 syscallarg(netbsd32_timespecp_t) rmtp; 365 } */ 366 struct netbsd32_timespec ts32; 367 struct timespec rqt, rmt; 368 int error, error1; 369 370 error = copyin(SCARG_P32(uap, rqtp), &ts32, sizeof(ts32)); 371 if (error) 372 return (error); 373 netbsd32_to_timespec(&ts32, &rqt); 374 375 error = nanosleep1(l, CLOCK_MONOTONIC, 0, &rqt, 376 SCARG_P32(uap, rmtp) ? &rmt : NULL); 377 if (SCARG_P32(uap, rmtp) == NULL || (error != 0 && error != EINTR)) 378 return error; 379 380 netbsd32_from_timespec(&rmt, &ts32); 381 error1 = copyout(&ts32, SCARG_P32(uap, rmtp), sizeof(ts32)); 382 return error1 ? error1 : error; 383 } 384 385 int 386 netbsd32_clock_nanosleep(struct lwp *l, const struct netbsd32_clock_nanosleep_args *uap, register_t *retval) 387 { 388 /* { 389 syscallarg(clockid_t) clock_id; 390 syscallarg(int) flags; 391 syscallarg(const netbsd32_timespecp_t) rqtp; 392 syscallarg(netbsd32_timespecp_t) rmtp; 393 } */ 394 struct netbsd32_timespec ts32; 395 struct timespec rqt, rmt; 396 int error, error1; 397 398 error = copyin(SCARG_P32(uap, rqtp), &ts32, sizeof(ts32)); 399 if (error) 400 goto out; 401 netbsd32_to_timespec(&ts32, &rqt); 402 403 error = nanosleep1(l, SCARG(uap, clock_id), SCARG(uap, flags), 404 &rqt, SCARG_P32(uap, rmtp) ? &rmt : NULL); 405 if (SCARG_P32(uap, rmtp) == NULL || (error != 0 && error != EINTR)) 406 goto out; 407 408 netbsd32_from_timespec(&rmt, &ts32); 409 if ((SCARG(uap, flags) & TIMER_ABSTIME) == 0 && 410 (error1 = copyout(&ts32, SCARG_P32(uap, rmtp), sizeof(ts32))) != 0) 411 error = error1; 412 out: 413 *retval = error; 414 return 0; 415 } 416 417 static int 418 netbsd32_timer_create_fetch(const void *src, void *dst, size_t size) 419 { 420 struct sigevent *evp = dst; 421 struct netbsd32_sigevent ev32; 422 int error; 423 424 error = copyin(src, &ev32, sizeof(ev32)); 425 if (error) 426 return error; 427 428 netbsd32_to_sigevent(&ev32, evp); 429 return 0; 430 } 431 432 int 433 netbsd32_timer_create(struct lwp *l, const struct netbsd32_timer_create_args *uap, register_t *retval) 434 { 435 /* { 436 syscallarg(netbsd32_clockid_t) clock_id; 437 syscallarg(netbsd32_sigeventp_t) evp; 438 syscallarg(netbsd32_timerp_t) timerid; 439 } */ 440 441 return timer_create1(SCARG_P32(uap, timerid), 442 SCARG(uap, clock_id), SCARG_P32(uap, evp), 443 netbsd32_timer_create_fetch, l); 444 } 445 446 int 447 netbsd32_timer_delete(struct lwp *l, const struct netbsd32_timer_delete_args *uap, register_t *retval) 448 { 449 /* { 450 syscallarg(netbsd32_timer_t) timerid; 451 } */ 452 struct sys_timer_delete_args ua; 453 454 NETBSD32TO64_UAP(timerid); 455 return sys_timer_delete(l, (void *)&ua, retval); 456 } 457 458 int 459 netbsd32___timer_settime50(struct lwp *l, const struct netbsd32___timer_settime50_args *uap, register_t *retval) 460 { 461 /* { 462 syscallarg(netbsd32_timer_t) timerid; 463 syscallarg(int) flags; 464 syscallarg(const netbsd32_itimerspecp_t) value; 465 syscallarg(netbsd32_itimerspecp_t) ovalue; 466 } */ 467 int error; 468 struct itimerspec value, ovalue, *ovp = NULL; 469 struct netbsd32_itimerspec its32; 470 471 if ((error = copyin(SCARG_P32(uap, value), &its32, sizeof(its32))) != 0) 472 return (error); 473 netbsd32_to_timespec(&its32.it_interval, &value.it_interval); 474 netbsd32_to_timespec(&its32.it_value, &value.it_value); 475 476 if (SCARG_P32(uap, ovalue)) 477 ovp = &ovalue; 478 479 if ((error = dotimer_settime(SCARG(uap, timerid), &value, ovp, 480 SCARG(uap, flags), l->l_proc)) != 0) 481 return error; 482 483 if (ovp) { 484 netbsd32_from_timespec(&ovp->it_interval, &its32.it_interval); 485 netbsd32_from_timespec(&ovp->it_value, &its32.it_value); 486 return copyout(&its32, SCARG_P32(uap, ovalue), sizeof(its32)); 487 } 488 return 0; 489 } 490 491 int 492 netbsd32___timer_gettime50(struct lwp *l, const struct netbsd32___timer_gettime50_args *uap, register_t *retval) 493 { 494 /* { 495 syscallarg(netbsd32_timer_t) timerid; 496 syscallarg(netbsd32_itimerspecp_t) value; 497 } */ 498 int error; 499 struct itimerspec its; 500 struct netbsd32_itimerspec its32; 501 502 if ((error = dotimer_gettime(SCARG(uap, timerid), l->l_proc, 503 &its)) != 0) 504 return error; 505 506 netbsd32_from_timespec(&its.it_interval, &its32.it_interval); 507 netbsd32_from_timespec(&its.it_value, &its32.it_value); 508 509 return copyout(&its32, SCARG_P32(uap, value), sizeof(its32)); 510 } 511 512 int 513 netbsd32_timer_getoverrun(struct lwp *l, const struct netbsd32_timer_getoverrun_args *uap, register_t *retval) 514 { 515 /* { 516 syscallarg(netbsd32_timer_t) timerid; 517 } */ 518 struct sys_timer_getoverrun_args ua; 519 520 NETBSD32TO64_UAP(timerid); 521 return sys_timer_getoverrun(l, (void *)&ua, retval); 522 } 523 524 int 525 netbsd32_clock_getcpuclockid2(struct lwp *l, 526 const struct netbsd32_clock_getcpuclockid2_args *uap, 527 register_t *retval) 528 { 529 /* { 530 syscallarg(idtype_t) idtype; 531 syscallarg(id_t) id; 532 syscallarg(netbsd32_clockidp_t) clock_id; 533 } */ 534 pid_t pid; 535 lwpid_t lid; 536 clockid_t clock_id; 537 id_t id = SCARG(uap, id); 538 539 switch (SCARG(uap, idtype)) { 540 case P_PID: 541 pid = id == 0 ? l->l_proc->p_pid : (pid_t)id; 542 clock_id = CLOCK_PROCESS_CPUTIME_ID | pid; 543 break; 544 case P_LWPID: 545 lid = id == 0 ? l->l_lid : (lwpid_t)id; 546 clock_id = CLOCK_THREAD_CPUTIME_ID | lid; 547 break; 548 default: 549 return EINVAL; 550 } 551 return copyout(&clock_id, SCARG_P32(uap, clock_id), sizeof(clock_id)); 552 } 553