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