1 /* $NetBSD: netbsd32_time.c,v 1.55 2021/02/18 12:54:03 simonb 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 1.55 2021/02/18 12:54:03 simonb 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 itv32 = SCARG_P32(uap, itv); 146 if (itv32) { 147 if ((error = copyin(itv32, &s32it, sizeof(s32it)))) 148 return error; 149 netbsd32_to_itimerval(&s32it, &aitv); 150 } 151 if (SCARG_P32(uap, oitv) != 0) { 152 SCARG(&getargs, which) = which; 153 SCARG(&getargs, itv) = SCARG(uap, oitv); 154 if ((error = netbsd32___getitimer50(l, &getargs, retval)) != 0) 155 return error; 156 } 157 if (itv32 == 0) 158 return 0; 159 160 return dosetitimer(p, which, &aitv); 161 } 162 163 int 164 netbsd32___getitimer50(struct lwp *l, const struct netbsd32___getitimer50_args *uap, register_t *retval) 165 { 166 /* { 167 syscallarg(int) which; 168 syscallarg(netbsd32_itimervalp_t) itv; 169 } */ 170 struct proc *p = l->l_proc; 171 struct netbsd32_itimerval s32it; 172 struct itimerval aitv; 173 int error; 174 175 error = dogetitimer(p, SCARG(uap, which), &aitv); 176 if (error) 177 return error; 178 179 netbsd32_from_itimerval(&aitv, &s32it); 180 return copyout(&s32it, SCARG_P32(uap, itv), sizeof(s32it)); 181 } 182 183 int 184 netbsd32___gettimeofday50(struct lwp *l, const struct netbsd32___gettimeofday50_args *uap, register_t *retval) 185 { 186 /* { 187 syscallarg(netbsd32_timevalp_t) tp; 188 syscallarg(netbsd32_timezonep_t) tzp; 189 } */ 190 struct timeval atv; 191 struct netbsd32_timeval tv32; 192 int error = 0; 193 struct netbsd32_timezone tzfake; 194 195 if (SCARG_P32(uap, tp)) { 196 microtime(&atv); 197 netbsd32_from_timeval(&atv, &tv32); 198 error = copyout(&tv32, SCARG_P32(uap, tp), sizeof(tv32)); 199 if (error) 200 return error; 201 } 202 if (SCARG_P32(uap, tzp)) { 203 /* 204 * NetBSD has no kernel notion of time zone, so we just 205 * fake up a timezone struct and return it if demanded. 206 */ 207 tzfake.tz_minuteswest = 0; 208 tzfake.tz_dsttime = 0; 209 error = copyout(&tzfake, SCARG_P32(uap, tzp), sizeof(tzfake)); 210 } 211 return error; 212 } 213 214 int 215 netbsd32___settimeofday50(struct lwp *l, const struct netbsd32___settimeofday50_args *uap, register_t *retval) 216 { 217 /* { 218 syscallarg(const netbsd32_timevalp_t) tv; 219 syscallarg(const netbsd32_timezonep_t) tzp; 220 } */ 221 struct netbsd32_timeval atv32; 222 struct timeval atv; 223 struct timespec ats; 224 int error; 225 struct proc *p = l->l_proc; 226 227 /* Verify all parameters before changing time. */ 228 229 /* 230 * NetBSD has no kernel notion of time zone, and only an 231 * obsolete program would try to set it, so we log a warning. 232 */ 233 if (SCARG_P32(uap, tzp)) 234 printf("pid %d attempted to set the " 235 "(obsolete) kernel time zone\n", p->p_pid); 236 237 if (SCARG_P32(uap, tv) == 0) 238 return 0; 239 240 if ((error = copyin(SCARG_P32(uap, tv), &atv32, sizeof(atv32))) != 0) 241 return error; 242 243 netbsd32_to_timeval(&atv32, &atv); 244 245 if (atv.tv_usec < 0 || atv.tv_usec >= 1000000) 246 return EINVAL; 247 248 TIMEVAL_TO_TIMESPEC(&atv, &ats); 249 return settime(p, &ats); 250 } 251 252 int 253 netbsd32___adjtime50(struct lwp *l, const struct netbsd32___adjtime50_args *uap, register_t *retval) 254 { 255 /* { 256 syscallarg(const netbsd32_timevalp_t) delta; 257 syscallarg(netbsd32_timevalp_t) olddelta; 258 } */ 259 struct netbsd32_timeval atv; 260 int error; 261 262 extern int time_adjusted; /* in kern_ntptime.c */ 263 extern int64_t time_adjtime; /* in kern_ntptime.c */ 264 265 if ((error = kauth_authorize_system(l->l_cred, 266 KAUTH_SYSTEM_TIME, KAUTH_REQ_SYSTEM_TIME_ADJTIME, NULL, NULL, 267 NULL)) != 0) 268 return error; 269 270 if (SCARG_P32(uap, olddelta)) { 271 atv.tv_sec = time_adjtime / 1000000; 272 atv.tv_usec = time_adjtime % 1000000; 273 if (atv.tv_usec < 0) { 274 atv.tv_usec += 1000000; 275 atv.tv_sec--; 276 } 277 error = copyout(&atv, SCARG_P32(uap, olddelta), sizeof(atv)); 278 if (error) 279 return error; 280 } 281 282 if (SCARG_P32(uap, delta)) { 283 error = copyin(SCARG_P32(uap, delta), &atv, sizeof(atv)); 284 if (error) 285 return error; 286 287 time_adjtime = (int64_t)atv.tv_sec * 1000000 + atv.tv_usec; 288 289 if (time_adjtime) 290 /* We need to save the system time during shutdown */ 291 time_adjusted |= 1; 292 } 293 294 return 0; 295 } 296 297 int 298 netbsd32___clock_gettime50(struct lwp *l, const struct netbsd32___clock_gettime50_args *uap, register_t *retval) 299 { 300 /* { 301 syscallarg(netbsd32_clockid_t) clock_id; 302 syscallarg(netbsd32_timespecp_t) tp; 303 } */ 304 int error; 305 struct timespec ats; 306 struct netbsd32_timespec ts32; 307 308 error = clock_gettime1(SCARG(uap, clock_id), &ats); 309 if (error != 0) 310 return error; 311 312 netbsd32_from_timespec(&ats, &ts32); 313 return copyout(&ts32, SCARG_P32(uap, tp), sizeof(ts32)); 314 } 315 316 int 317 netbsd32___clock_settime50(struct lwp *l, const struct netbsd32___clock_settime50_args *uap, register_t *retval) 318 { 319 /* { 320 syscallarg(netbsd32_clockid_t) clock_id; 321 syscallarg(const netbsd32_timespecp_t) tp; 322 } */ 323 struct netbsd32_timespec ts32; 324 struct timespec ats; 325 int error; 326 327 if ((error = copyin(SCARG_P32(uap, tp), &ts32, sizeof(ts32))) != 0) 328 return error; 329 330 netbsd32_to_timespec(&ts32, &ats); 331 return clock_settime1(l->l_proc, SCARG(uap, clock_id), &ats, true); 332 } 333 334 int 335 netbsd32___clock_getres50(struct lwp *l, const struct netbsd32___clock_getres50_args *uap, register_t *retval) 336 { 337 /* { 338 syscallarg(netbsd32_clockid_t) clock_id; 339 syscallarg(netbsd32_timespecp_t) tp; 340 } */ 341 struct netbsd32_timespec ts32; 342 struct timespec ts; 343 int error = 0; 344 345 error = clock_getres1(SCARG(uap, clock_id), &ts); 346 if (error != 0) 347 return error; 348 349 if (SCARG_P32(uap, tp)) { 350 netbsd32_from_timespec(&ts, &ts32); 351 error = copyout(&ts32, SCARG_P32(uap, tp), sizeof(ts32)); 352 } 353 354 return error; 355 } 356 357 int 358 netbsd32___nanosleep50(struct lwp *l, const struct netbsd32___nanosleep50_args *uap, register_t *retval) 359 { 360 /* { 361 syscallarg(const netbsd32_timespecp_t) rqtp; 362 syscallarg(netbsd32_timespecp_t) rmtp; 363 } */ 364 struct netbsd32_timespec ts32; 365 struct timespec rqt, rmt; 366 int error, error1; 367 368 error = copyin(SCARG_P32(uap, rqtp), &ts32, sizeof(ts32)); 369 if (error) 370 return error; 371 netbsd32_to_timespec(&ts32, &rqt); 372 373 error = nanosleep1(l, CLOCK_MONOTONIC, 0, &rqt, 374 SCARG_P32(uap, rmtp) ? &rmt : NULL); 375 if (SCARG_P32(uap, rmtp) == NULL || (error != 0 && error != EINTR)) 376 return error; 377 378 netbsd32_from_timespec(&rmt, &ts32); 379 error1 = copyout(&ts32, SCARG_P32(uap, rmtp), sizeof(ts32)); 380 return error1 ? error1 : error; 381 } 382 383 int 384 netbsd32_clock_nanosleep(struct lwp *l, const struct netbsd32_clock_nanosleep_args *uap, register_t *retval) 385 { 386 /* { 387 syscallarg(clockid_t) clock_id; 388 syscallarg(int) flags; 389 syscallarg(const netbsd32_timespecp_t) rqtp; 390 syscallarg(netbsd32_timespecp_t) rmtp; 391 } */ 392 struct netbsd32_timespec ts32; 393 struct timespec rqt, rmt; 394 int error, error1; 395 396 error = copyin(SCARG_P32(uap, rqtp), &ts32, sizeof(ts32)); 397 if (error) 398 goto out; 399 netbsd32_to_timespec(&ts32, &rqt); 400 401 error = nanosleep1(l, SCARG(uap, clock_id), SCARG(uap, flags), 402 &rqt, SCARG_P32(uap, rmtp) ? &rmt : NULL); 403 if (SCARG_P32(uap, rmtp) == NULL || (error != 0 && error != EINTR)) 404 goto out; 405 406 netbsd32_from_timespec(&rmt, &ts32); 407 if ((SCARG(uap, flags) & TIMER_ABSTIME) == 0 && 408 (error1 = copyout(&ts32, SCARG_P32(uap, rmtp), sizeof(ts32))) != 0) 409 error = error1; 410 out: 411 *retval = error; 412 return 0; 413 } 414 415 static int 416 netbsd32_timer_create_fetch(const void *src, void *dst, size_t size) 417 { 418 struct sigevent *evp = dst; 419 struct netbsd32_sigevent ev32; 420 int error; 421 422 error = copyin(src, &ev32, sizeof(ev32)); 423 if (error) 424 return error; 425 426 netbsd32_to_sigevent(&ev32, evp); 427 return 0; 428 } 429 430 int 431 netbsd32_timer_create(struct lwp *l, const struct netbsd32_timer_create_args *uap, register_t *retval) 432 { 433 /* { 434 syscallarg(netbsd32_clockid_t) clock_id; 435 syscallarg(netbsd32_sigeventp_t) evp; 436 syscallarg(netbsd32_timerp_t) timerid; 437 } */ 438 439 return timer_create1(SCARG_P32(uap, timerid), 440 SCARG(uap, clock_id), SCARG_P32(uap, evp), 441 netbsd32_timer_create_fetch, l); 442 } 443 444 int 445 netbsd32_timer_delete(struct lwp *l, const struct netbsd32_timer_delete_args *uap, register_t *retval) 446 { 447 /* { 448 syscallarg(netbsd32_timer_t) timerid; 449 } */ 450 struct sys_timer_delete_args ua; 451 452 NETBSD32TO64_UAP(timerid); 453 return sys_timer_delete(l, (void *)&ua, retval); 454 } 455 456 int 457 netbsd32___timer_settime50(struct lwp *l, const struct netbsd32___timer_settime50_args *uap, register_t *retval) 458 { 459 /* { 460 syscallarg(netbsd32_timer_t) timerid; 461 syscallarg(int) flags; 462 syscallarg(const netbsd32_itimerspecp_t) value; 463 syscallarg(netbsd32_itimerspecp_t) ovalue; 464 } */ 465 int error; 466 struct itimerspec value, ovalue, *ovp = NULL; 467 struct netbsd32_itimerspec its32; 468 469 if ((error = copyin(SCARG_P32(uap, value), &its32, sizeof(its32))) != 0) 470 return error; 471 netbsd32_to_timespec(&its32.it_interval, &value.it_interval); 472 netbsd32_to_timespec(&its32.it_value, &value.it_value); 473 474 if (SCARG_P32(uap, ovalue)) 475 ovp = &ovalue; 476 477 if ((error = dotimer_settime(SCARG(uap, timerid), &value, ovp, 478 SCARG(uap, flags), l->l_proc)) != 0) 479 return error; 480 481 if (ovp) { 482 netbsd32_from_timespec(&ovp->it_interval, &its32.it_interval); 483 netbsd32_from_timespec(&ovp->it_value, &its32.it_value); 484 return copyout(&its32, SCARG_P32(uap, ovalue), sizeof(its32)); 485 } 486 return 0; 487 } 488 489 int 490 netbsd32___timer_gettime50(struct lwp *l, const struct netbsd32___timer_gettime50_args *uap, register_t *retval) 491 { 492 /* { 493 syscallarg(netbsd32_timer_t) timerid; 494 syscallarg(netbsd32_itimerspecp_t) value; 495 } */ 496 int error; 497 struct itimerspec its; 498 struct netbsd32_itimerspec its32; 499 500 if ((error = dotimer_gettime(SCARG(uap, timerid), l->l_proc, 501 &its)) != 0) 502 return error; 503 504 netbsd32_from_timespec(&its.it_interval, &its32.it_interval); 505 netbsd32_from_timespec(&its.it_value, &its32.it_value); 506 507 return copyout(&its32, SCARG_P32(uap, value), sizeof(its32)); 508 } 509 510 int 511 netbsd32_timer_getoverrun(struct lwp *l, const struct netbsd32_timer_getoverrun_args *uap, register_t *retval) 512 { 513 /* { 514 syscallarg(netbsd32_timer_t) timerid; 515 } */ 516 struct sys_timer_getoverrun_args ua; 517 518 NETBSD32TO64_UAP(timerid); 519 return sys_timer_getoverrun(l, (void *)&ua, retval); 520 } 521 522 int 523 netbsd32_clock_getcpuclockid2(struct lwp *l, 524 const struct netbsd32_clock_getcpuclockid2_args *uap, 525 register_t *retval) 526 { 527 /* { 528 syscallarg(idtype_t) idtype; 529 syscallarg(id_t) id; 530 syscallarg(netbsd32_clockidp_t) clock_id; 531 } */ 532 pid_t pid; 533 lwpid_t lid; 534 clockid_t clock_id; 535 id_t id = SCARG(uap, id); 536 537 switch (SCARG(uap, idtype)) { 538 case P_PID: 539 pid = id == 0 ? l->l_proc->p_pid : (pid_t)id; 540 clock_id = CLOCK_PROCESS_CPUTIME_ID | pid; 541 break; 542 case P_LWPID: 543 lid = id == 0 ? l->l_lid : (lwpid_t)id; 544 clock_id = CLOCK_THREAD_CPUTIME_ID | lid; 545 break; 546 default: 547 return EINVAL; 548 } 549 return copyout(&clock_id, SCARG_P32(uap, clock_id), sizeof(clock_id)); 550 } 551