1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Sean Eric Fagan of Cygnus Support. 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 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 #include "namespace.h" 36 #include <sys/param.h> 37 #include <sys/exterrvar.h> 38 #include <sys/time.h> 39 #include <sys/sysctl.h> 40 #include <sys/resource.h> 41 #include <sys/socket.h> 42 43 #include <elf.h> 44 #include <errno.h> 45 #include <limits.h> 46 #include <paths.h> 47 #include <pthread.h> /* we just need the limits */ 48 #include <semaphore.h> 49 #include <time.h> 50 #include <unistd.h> 51 #include "un-namespace.h" 52 53 #include "../stdlib/atexit.h" 54 #include "tzdir.h" /* from ../../../contrib/tzcode/stdtime */ 55 #include "libc_private.h" 56 57 #define _PATH_ZONEINFO TZDIR /* from tzfile.h */ 58 59 /* 60 * sysconf -- 61 * get configurable system variables. 62 * 63 * XXX 64 * POSIX 1003.1 (ISO/IEC 9945-1, 4.8.1.3) states that the variable values 65 * not change during the lifetime of the calling process. This would seem 66 * to require that any change to system limits kill all running processes. 67 * A workaround might be to cache the values when they are first retrieved 68 * and then simply return the cached value on subsequent calls. This is 69 * less useful than returning up-to-date values, however. 70 */ 71 long 72 sysconf(int name) 73 { 74 struct rlimit rl; 75 size_t len; 76 int mib[2], sverrno, value; 77 long lvalue, defaultresult; 78 const char *path; 79 80 defaultresult = -1; 81 82 switch (name) { 83 case _SC_ARG_MAX: 84 mib[0] = CTL_KERN; 85 mib[1] = KERN_ARGMAX; 86 break; 87 case _SC_CHILD_MAX: 88 if (getrlimit(RLIMIT_NPROC, &rl) != 0) 89 return (-1); 90 if (rl.rlim_cur == RLIM_INFINITY) 91 return (-1); 92 if (rl.rlim_cur > LONG_MAX) { 93 errno = EOVERFLOW; 94 return (-1); 95 } 96 return ((long)rl.rlim_cur); 97 case _SC_CLK_TCK: 98 return (CLK_TCK); 99 case _SC_NGROUPS_MAX: 100 mib[0] = CTL_KERN; 101 mib[1] = KERN_NGROUPS; 102 break; 103 case _SC_OPEN_MAX: 104 if (getrlimit(RLIMIT_NOFILE, &rl) != 0) 105 return (-1); 106 if (rl.rlim_cur == RLIM_INFINITY) 107 return (-1); 108 if (rl.rlim_cur > LONG_MAX) { 109 errno = EOVERFLOW; 110 return (-1); 111 } 112 return ((long)rl.rlim_cur); 113 case _SC_STREAM_MAX: 114 if (getrlimit(RLIMIT_NOFILE, &rl) != 0) 115 return (-1); 116 if (rl.rlim_cur == RLIM_INFINITY) 117 return (-1); 118 if (rl.rlim_cur > LONG_MAX) { 119 errno = EOVERFLOW; 120 return (-1); 121 } 122 /* 123 * struct __sFILE currently has a limitation that 124 * file descriptors must fit in a signed short. 125 * This doesn't precisely capture the letter of POSIX 126 * but approximates the spirit. 127 */ 128 if (rl.rlim_cur > SHRT_MAX) 129 return (SHRT_MAX); 130 131 return ((long)rl.rlim_cur); 132 case _SC_JOB_CONTROL: 133 return (_POSIX_JOB_CONTROL); 134 case _SC_SAVED_IDS: 135 /* XXX - must be 1 */ 136 mib[0] = CTL_KERN; 137 mib[1] = KERN_SAVED_IDS; 138 goto yesno; 139 case _SC_VERSION: 140 mib[0] = CTL_KERN; 141 mib[1] = KERN_POSIX1; 142 break; 143 case _SC_BC_BASE_MAX: 144 return (BC_BASE_MAX); 145 case _SC_BC_DIM_MAX: 146 return (BC_DIM_MAX); 147 case _SC_BC_SCALE_MAX: 148 return (BC_SCALE_MAX); 149 case _SC_BC_STRING_MAX: 150 return (BC_STRING_MAX); 151 case _SC_COLL_WEIGHTS_MAX: 152 return (COLL_WEIGHTS_MAX); 153 case _SC_EXPR_NEST_MAX: 154 return (EXPR_NEST_MAX); 155 case _SC_LINE_MAX: 156 return (LINE_MAX); 157 case _SC_RE_DUP_MAX: 158 return (RE_DUP_MAX); 159 case _SC_2_VERSION: 160 /* 161 * This is something of a lie, but it would be silly at 162 * this point to try to deduce this from the contents 163 * of the filesystem. 164 */ 165 return (_POSIX2_VERSION); 166 case _SC_2_C_BIND: 167 return (_POSIX2_C_BIND); 168 case _SC_2_C_DEV: 169 return (_POSIX2_C_DEV); 170 case _SC_2_CHAR_TERM: 171 return (_POSIX2_CHAR_TERM); 172 case _SC_2_FORT_DEV: 173 return (_POSIX2_FORT_DEV); 174 case _SC_2_FORT_RUN: 175 return (_POSIX2_FORT_RUN); 176 case _SC_2_LOCALEDEF: 177 return (_POSIX2_LOCALEDEF); 178 case _SC_2_SW_DEV: 179 return (_POSIX2_SW_DEV); 180 case _SC_2_UPE: 181 return (_POSIX2_UPE); 182 case _SC_TZNAME_MAX: 183 path = _PATH_ZONEINFO; 184 do_NAME_MAX: 185 sverrno = errno; 186 errno = 0; 187 lvalue = pathconf(path, _PC_NAME_MAX); 188 if (lvalue == -1 && errno != 0) 189 return (-1); 190 errno = sverrno; 191 return (lvalue); 192 193 case _SC_ASYNCHRONOUS_IO: 194 #if _POSIX_ASYNCHRONOUS_IO == 0 195 mib[0] = CTL_P1003_1B; 196 mib[1] = CTL_P1003_1B_ASYNCHRONOUS_IO; 197 break; 198 #else 199 return (_POSIX_ASYNCHRONOUS_IO); 200 #endif 201 case _SC_MAPPED_FILES: 202 return (_POSIX_MAPPED_FILES); 203 case _SC_MEMLOCK: 204 return (_POSIX_MEMLOCK); 205 case _SC_MEMLOCK_RANGE: 206 return (_POSIX_MEMLOCK_RANGE); 207 case _SC_MEMORY_PROTECTION: 208 return (_POSIX_MEMORY_PROTECTION); 209 case _SC_MESSAGE_PASSING: 210 #if _POSIX_MESSAGE_PASSING == 0 211 mib[0] = CTL_P1003_1B; 212 mib[1] = CTL_P1003_1B_MESSAGE_PASSING; 213 goto yesno; 214 #else 215 return (_POSIX_MESSAGE_PASSING); 216 #endif 217 case _SC_PRIORITIZED_IO: 218 #if _POSIX_PRIORITIZED_IO == 0 219 mib[0] = CTL_P1003_1B; 220 mib[1] = CTL_P1003_1B_PRIORITIZED_IO; 221 goto yesno; 222 #else 223 return (_POSIX_PRIORITIZED_IO); 224 #endif 225 case _SC_PRIORITY_SCHEDULING: 226 #if _POSIX_PRIORITY_SCHEDULING == 0 227 mib[0] = CTL_P1003_1B; 228 mib[1] = CTL_P1003_1B_PRIORITY_SCHEDULING; 229 goto yesno; 230 #else 231 return (_POSIX_PRIORITY_SCHEDULING); 232 #endif 233 case _SC_REALTIME_SIGNALS: 234 #if _POSIX_REALTIME_SIGNALS == 0 235 mib[0] = CTL_P1003_1B; 236 mib[1] = CTL_P1003_1B_REALTIME_SIGNALS; 237 goto yesno; 238 #else 239 return (_POSIX_REALTIME_SIGNALS); 240 #endif 241 case _SC_SEMAPHORES: 242 #if _POSIX_SEMAPHORES == 0 243 mib[0] = CTL_P1003_1B; 244 mib[1] = CTL_P1003_1B_SEMAPHORES; 245 goto yesno; 246 #else 247 return (_POSIX_SEMAPHORES); 248 #endif 249 case _SC_FSYNC: 250 return (_POSIX_FSYNC); 251 252 case _SC_SHARED_MEMORY_OBJECTS: 253 return (_POSIX_SHARED_MEMORY_OBJECTS); 254 case _SC_SYNCHRONIZED_IO: 255 #if _POSIX_SYNCHRONIZED_IO == 0 256 mib[0] = CTL_P1003_1B; 257 mib[1] = CTL_P1003_1B_SYNCHRONIZED_IO; 258 goto yesno; 259 #else 260 return (_POSIX_SYNCHRONIZED_IO); 261 #endif 262 case _SC_TIMERS: 263 #if _POSIX_TIMERS == 0 264 mib[0] = CTL_P1003_1B; 265 mib[1] = CTL_P1003_1B_TIMERS; 266 goto yesno; 267 #else 268 return (_POSIX_TIMERS); 269 #endif 270 case _SC_AIO_LISTIO_MAX: 271 mib[0] = CTL_P1003_1B; 272 mib[1] = CTL_P1003_1B_AIO_LISTIO_MAX; 273 break; 274 case _SC_AIO_MAX: 275 mib[0] = CTL_P1003_1B; 276 mib[1] = CTL_P1003_1B_AIO_MAX; 277 break; 278 case _SC_AIO_PRIO_DELTA_MAX: 279 mib[0] = CTL_P1003_1B; 280 mib[1] = CTL_P1003_1B_AIO_PRIO_DELTA_MAX; 281 break; 282 case _SC_DELAYTIMER_MAX: 283 mib[0] = CTL_P1003_1B; 284 mib[1] = CTL_P1003_1B_DELAYTIMER_MAX; 285 goto yesno; 286 case _SC_MQ_OPEN_MAX: 287 mib[0] = CTL_P1003_1B; 288 mib[1] = CTL_P1003_1B_MQ_OPEN_MAX; 289 goto yesno; 290 case _SC_NSIG: 291 return (_SIG_MAXSIG); 292 case _SC_PAGESIZE: 293 return (getpagesize()); 294 case _SC_RTSIG_MAX: 295 mib[0] = CTL_P1003_1B; 296 mib[1] = CTL_P1003_1B_RTSIG_MAX; 297 goto yesno; 298 case _SC_SEM_NSEMS_MAX: 299 return (-1); 300 case _SC_SEM_VALUE_MAX: 301 return (SEM_VALUE_MAX); 302 case _SC_SIGQUEUE_MAX: 303 mib[0] = CTL_P1003_1B; 304 mib[1] = CTL_P1003_1B_SIGQUEUE_MAX; 305 goto yesno; 306 case _SC_TIMER_MAX: 307 mib[0] = CTL_P1003_1B; 308 mib[1] = CTL_P1003_1B_TIMER_MAX; 309 yesno: 310 len = sizeof(value); 311 if (sysctl(mib, 2, &value, &len, NULL, 0) == -1) 312 return (-1); 313 if (value == 0) 314 return (defaultresult); 315 return ((long)value); 316 317 case _SC_2_PBS: 318 case _SC_2_PBS_ACCOUNTING: 319 case _SC_2_PBS_CHECKPOINT: 320 case _SC_2_PBS_LOCATE: 321 case _SC_2_PBS_MESSAGE: 322 case _SC_2_PBS_TRACK: 323 #if _POSIX2_PBS == 0 324 #error "don't know how to determine _SC_2_PBS" 325 /* 326 * This probably requires digging through the filesystem 327 * to see if the appropriate package has been installed. 328 * Since we don't currently support this option at all, 329 * it's not worth the effort to write the code now. 330 * Figuring out which of the sub-options are supported 331 * would be even more difficult, so it's probably easier 332 * to always say ``no''. 333 */ 334 #else 335 return (_POSIX2_PBS); 336 #endif 337 case _SC_ADVISORY_INFO: 338 #if _POSIX_ADVISORY_INFO == 0 339 #error "_POSIX_ADVISORY_INFO" 340 #else 341 return (_POSIX_ADVISORY_INFO); 342 #endif 343 case _SC_BARRIERS: 344 #if _POSIX_BARRIERS == 0 345 #error "_POSIX_BARRIERS" 346 #else 347 return (_POSIX_BARRIERS); 348 #endif 349 case _SC_CLOCK_SELECTION: 350 #if _POSIX_CLOCK_SELECTION == 0 351 #error "_POSIX_CLOCK_SELECTION" 352 #else 353 return (_POSIX_CLOCK_SELECTION); 354 #endif 355 case _SC_CPUTIME: 356 return (_POSIX_CPUTIME); 357 #ifdef notdef 358 case _SC_FILE_LOCKING: 359 /* 360 * XXX - The standard doesn't tell us how to define 361 * _POSIX_FILE_LOCKING, so we can't answer this one. 362 */ 363 #endif 364 365 /* 366 * SUSv4tc1 says the following about _SC_GETGR_R_SIZE_MAX and 367 * _SC_GETPW_R_SIZE_MAX: 368 * Note that sysconf(_SC_GETGR_R_SIZE_MAX) may return -1 if 369 * there is no hard limit on the size of the buffer needed to 370 * store all the groups returned. 371 */ 372 case _SC_GETGR_R_SIZE_MAX: 373 case _SC_GETPW_R_SIZE_MAX: 374 return (-1); 375 case _SC_HOST_NAME_MAX: 376 return (MAXHOSTNAMELEN - 1); /* does not include \0 */ 377 case _SC_LOGIN_NAME_MAX: 378 return (MAXLOGNAME); 379 case _SC_MONOTONIC_CLOCK: 380 #if _POSIX_MONOTONIC_CLOCK == 0 381 #error "_POSIX_MONOTONIC_CLOCK" 382 #else 383 return (_POSIX_MONOTONIC_CLOCK); 384 #endif 385 #if _POSIX_MESSAGE_PASSING > -1 386 case _SC_MQ_PRIO_MAX: 387 return (MQ_PRIO_MAX); 388 #endif 389 case _SC_READER_WRITER_LOCKS: 390 return (_POSIX_READER_WRITER_LOCKS); 391 case _SC_REGEXP: 392 return (_POSIX_REGEXP); 393 case _SC_SHELL: 394 return (_POSIX_SHELL); 395 case _SC_SPAWN: 396 return (_POSIX_SPAWN); 397 case _SC_SPIN_LOCKS: 398 return (_POSIX_SPIN_LOCKS); 399 case _SC_SPORADIC_SERVER: 400 #if _POSIX_SPORADIC_SERVER == 0 401 #error "_POSIX_SPORADIC_SERVER" 402 #else 403 return (_POSIX_SPORADIC_SERVER); 404 #endif 405 case _SC_THREAD_ATTR_STACKADDR: 406 return (_POSIX_THREAD_ATTR_STACKADDR); 407 case _SC_THREAD_ATTR_STACKSIZE: 408 return (_POSIX_THREAD_ATTR_STACKSIZE); 409 case _SC_THREAD_CPUTIME: 410 return (_POSIX_THREAD_CPUTIME); 411 case _SC_THREAD_DESTRUCTOR_ITERATIONS: 412 return (PTHREAD_DESTRUCTOR_ITERATIONS); 413 case _SC_THREAD_KEYS_MAX: 414 return (PTHREAD_KEYS_MAX); 415 case _SC_THREAD_PRIO_INHERIT: 416 return (_POSIX_THREAD_PRIO_INHERIT); 417 case _SC_THREAD_PRIO_PROTECT: 418 return (_POSIX_THREAD_PRIO_PROTECT); 419 case _SC_THREAD_PRIORITY_SCHEDULING: 420 return (_POSIX_THREAD_PRIORITY_SCHEDULING); 421 case _SC_THREAD_PROCESS_SHARED: 422 return (_POSIX_THREAD_PROCESS_SHARED); 423 case _SC_THREAD_SAFE_FUNCTIONS: 424 return (_POSIX_THREAD_SAFE_FUNCTIONS); 425 case _SC_THREAD_STACK_MIN: 426 return (PTHREAD_STACK_MIN); 427 case _SC_THREAD_THREADS_MAX: 428 return (PTHREAD_THREADS_MAX); /* XXX wrong type! */ 429 case _SC_TIMEOUTS: 430 return (_POSIX_TIMEOUTS); 431 case _SC_THREADS: 432 return (_POSIX_THREADS); 433 case _SC_TRACE: 434 #if _POSIX_TRACE == 0 435 #error "_POSIX_TRACE" 436 /* While you're implementing this, also do the ones below. */ 437 #else 438 return (_POSIX_TRACE); 439 #endif 440 #if _POSIX_TRACE > -1 441 case _SC_TRACE_EVENT_FILTER: 442 return (_POSIX_TRACE_EVENT_FILTER); 443 case _SC_TRACE_INHERIT: 444 return (_POSIX_TRACE_INHERIT); 445 case _SC_TRACE_LOG: 446 return (_POSIX_TRACE_LOG); 447 #endif 448 case _SC_TTY_NAME_MAX: 449 path = _PATH_DEV; 450 goto do_NAME_MAX; 451 case _SC_TYPED_MEMORY_OBJECTS: 452 #if _POSIX_TYPED_MEMORY_OBJECTS == 0 453 #error "_POSIX_TYPED_MEMORY_OBJECTS" 454 #else 455 return (_POSIX_TYPED_MEMORY_OBJECTS); 456 #endif 457 case _SC_V6_ILP32_OFF32: 458 #if _V6_ILP32_OFF32 == 0 459 if (sizeof(int) * CHAR_BIT == 32 && 460 sizeof(int) == sizeof(long) && 461 sizeof(long) == sizeof(void *) && 462 sizeof(void *) == sizeof(off_t)) 463 return 1; 464 else 465 return -1; 466 #else 467 return (_V6_ILP32_OFF32); 468 #endif 469 case _SC_V6_ILP32_OFFBIG: 470 #if _V6_ILP32_OFFBIG == 0 471 if (sizeof(int) * CHAR_BIT == 32 && 472 sizeof(int) == sizeof(long) && 473 sizeof(long) == sizeof(void *) && 474 sizeof(off_t) * CHAR_BIT >= 64) 475 return 1; 476 else 477 return -1; 478 #else 479 return (_V6_ILP32_OFFBIG); 480 #endif 481 case _SC_V6_LP64_OFF64: 482 #if _V6_LP64_OFF64 == 0 483 if (sizeof(int) * CHAR_BIT == 32 && 484 sizeof(long) * CHAR_BIT == 64 && 485 sizeof(long) == sizeof(void *) && 486 sizeof(void *) == sizeof(off_t)) 487 return 1; 488 else 489 return -1; 490 #else 491 return (_V6_LP64_OFF64); 492 #endif 493 case _SC_V6_LPBIG_OFFBIG: 494 #if _V6_LPBIG_OFFBIG == 0 495 if (sizeof(int) * CHAR_BIT >= 32 && 496 sizeof(long) * CHAR_BIT >= 64 && 497 sizeof(void *) * CHAR_BIT >= 64 && 498 sizeof(off_t) * CHAR_BIT >= 64) 499 return 1; 500 else 501 return -1; 502 #else 503 return (_V6_LPBIG_OFFBIG); 504 #endif 505 case _SC_ATEXIT_MAX: 506 return (ATEXIT_SIZE); 507 case _SC_IOV_MAX: 508 mib[0] = CTL_KERN; 509 mib[1] = KERN_IOV_MAX; 510 break; 511 case _SC_XOPEN_CRYPT: 512 return (_XOPEN_CRYPT); 513 case _SC_XOPEN_ENH_I18N: 514 return (_XOPEN_ENH_I18N); 515 case _SC_XOPEN_LEGACY: 516 return (_XOPEN_LEGACY); 517 case _SC_XOPEN_REALTIME: 518 #if _XOPEN_REALTIME == 0 519 sverrno = errno; 520 value = sysconf(_SC_ASYNCHRONOUS_IO) > 0 && 521 sysconf(_SC_MEMLOCK) > 0 && 522 sysconf(_SC_MEMLOCK_RANGE) > 0 && 523 sysconf(_SC_MESSAGE_PASSING) > 0 && 524 sysconf(_SC_PRIORITY_SCHEDULING) > 0 && 525 sysconf(_SC_REALTIME_SIGNALS) > 0 && 526 sysconf(_SC_SEMAPHORES) > 0 && 527 sysconf(_SC_SHARED_MEMORY_OBJECTS) > 0 && 528 sysconf(_SC_SYNCHRONIZED_IO) > 0 && 529 sysconf(_SC_TIMERS) > 0; 530 errno = sverrno; 531 if (value) 532 return (200112L); 533 else 534 return (-1); 535 #else 536 return (_XOPEN_REALTIME); 537 #endif 538 case _SC_XOPEN_REALTIME_THREADS: 539 #if _XOPEN_REALTIME_THREADS == 0 540 #error "_XOPEN_REALTIME_THREADS" 541 #else 542 return (_XOPEN_REALTIME_THREADS); 543 #endif 544 case _SC_XOPEN_SHM: 545 len = sizeof(lvalue); 546 sverrno = errno; 547 if (sysctlbyname("kern.ipc.shmmin", &lvalue, &len, NULL, 548 0) == -1) { 549 errno = sverrno; 550 return (-1); 551 } 552 errno = sverrno; 553 return (1); 554 case _SC_XOPEN_STREAMS: 555 return (_XOPEN_STREAMS); 556 case _SC_XOPEN_UNIX: 557 return (_XOPEN_UNIX); 558 #ifdef _XOPEN_VERSION 559 case _SC_XOPEN_VERSION: 560 return (_XOPEN_VERSION); 561 #endif 562 #ifdef _XOPEN_XCU_VERSION 563 case _SC_XOPEN_XCU_VERSION: 564 return (_XOPEN_XCU_VERSION); 565 #endif 566 case _SC_SYMLOOP_MAX: 567 return (MAXSYMLINKS); 568 case _SC_RAW_SOCKETS: 569 return (_POSIX_RAW_SOCKETS); 570 case _SC_IPV6: 571 #if _POSIX_IPV6 == 0 572 sverrno = errno; 573 value = _socket(PF_INET6, SOCK_CLOEXEC | SOCK_DGRAM, 0); 574 errno = sverrno; 575 if (value >= 0) { 576 _close(value); 577 return (200112L); 578 } else 579 return (0); 580 #else 581 return (_POSIX_IPV6); 582 #endif 583 584 case _SC_NPROCESSORS_CONF: 585 case _SC_NPROCESSORS_ONLN: 586 if (_elf_aux_info(AT_NCPUS, &value, sizeof(value)) == 0) 587 return ((long)value); 588 mib[0] = CTL_HW; 589 mib[1] = HW_NCPU; 590 break; 591 592 #ifdef _SC_PHYS_PAGES 593 case _SC_PHYS_PAGES: 594 len = sizeof(lvalue); 595 if (sysctlbyname("hw.availpages", &lvalue, &len, NULL, 0) == -1) 596 return (-1); 597 return (lvalue); 598 #endif 599 600 #ifdef _SC_CPUSET_SIZE 601 case _SC_CPUSET_SIZE: 602 len = sizeof(value); 603 if (sysctlbyname("kern.sched.cpusetsize", &value, &len, NULL, 604 0) == -1) 605 return (-1); 606 return ((long)value); 607 #endif 608 case _SC_UEXTERR_MAXLEN: 609 return (UEXTERROR_MAXLEN); 610 611 default: 612 errno = EINVAL; 613 return (-1); 614 } 615 len = sizeof(value); 616 if (sysctl(mib, 2, &value, &len, NULL, 0) == -1) 617 value = -1; 618 return ((long)value); 619 } 620