sysconf.c revision 176618
172445Sassar/*- 272445Sassar * Copyright (c) 1993 372445Sassar * The Regents of the University of California. All rights reserved. 472445Sassar * 572445Sassar * This code is derived from software contributed to Berkeley by 672445Sassar * Sean Eric Fagan of Cygnus Support. 772445Sassar * 872445Sassar * Redistribution and use in source and binary forms, with or without 972445Sassar * modification, are permitted provided that the following conditions 1072445Sassar * are met: 1172445Sassar * 1. Redistributions of source code must retain the above copyright 1272445Sassar * notice, this list of conditions and the following disclaimer. 13233294Sstas * 2. Redistributions in binary form must reproduce the above copyright 1472445Sassar * notice, this list of conditions and the following disclaimer in the 1572445Sassar * documentation and/or other materials provided with the distribution. 1672445Sassar * 4. Neither the name of the University nor the names of its contributors 1772445Sassar * may be used to endorse or promote products derived from this software 1872445Sassar * without specific prior written permission. 1972445Sassar * 2072445Sassar * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 2172445Sassar * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2272445Sassar * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2372445Sassar * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 2472445Sassar * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2572445Sassar * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2672445Sassar * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2772445Sassar * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2872445Sassar * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2972445Sassar * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3072445Sassar * SUCH DAMAGE. 3178527Sassar */ 3272445Sassar 3372445Sassar#if defined(LIBC_SCCS) && !defined(lint) 3472445Sassarstatic char sccsid[] = "@(#)sysconf.c 8.2 (Berkeley) 3/20/94"; 3572445Sassar#endif /* LIBC_SCCS and not lint */ 3672445Sassar#include <sys/cdefs.h> 3772445Sassar__FBSDID("$FreeBSD: head/lib/libc/gen/sysconf.c 176618 2008-02-27 05:56:57Z wollman $"); 3872445Sassar 3972445Sassar#include <sys/param.h> 40120945Snectar#include <sys/time.h> 4172445Sassar#include <sys/sysctl.h> 42178825Sdfr#include <sys/resource.h> 4372445Sassar#include <sys/socket.h> 4472445Sassar 4572445Sassar#include <errno.h> 4672445Sassar#include <limits.h> 4772445Sassar#include <paths.h> 4872445Sassar#include <pthread.h> /* we just need the limits */ 4972445Sassar#include <time.h> 5072445Sassar#include <unistd.h> 5172445Sassar 5272445Sassar#include "../stdlib/atexit.h" 5372445Sassar#include "../stdtime/tzfile.h" 5472445Sassar 5572445Sassar#define _PATH_ZONEINFO TZDIR /* from tzfile.h */ 5678527Sassar 5778527Sassar/* 5878527Sassar * sysconf -- 5978527Sassar * get configurable system variables. 6078527Sassar * 61120945Snectar * XXX 6278527Sassar * POSIX 1003.1 (ISO/IEC 9945-1, 4.8.1.3) states that the variable values 6378527Sassar * not change during the lifetime of the calling process. This would seem 6478527Sassar * to require that any change to system limits kill all running processes. 6578527Sassar * A workaround might be to cache the values when they are first retrieved 6678527Sassar * and then simply return the cached value on subsequent calls. This is 6778527Sassar * less useful than returning up-to-date values, however. 6878527Sassar */ 6978527Sassarlong 7078527Sassarsysconf(name) 71178825Sdfr int name; 7278527Sassar{ 7378527Sassar struct rlimit rl; 7478527Sassar size_t len; 7578527Sassar int mib[2], sverrno, value; 7678527Sassar long lvalue, defaultresult; 7778527Sassar const char *path; 7878527Sassar 7978527Sassar defaultresult = -1; 8078527Sassar 8178527Sassar switch (name) { 8278527Sassar case _SC_ARG_MAX: 8378527Sassar mib[0] = CTL_KERN; 8478527Sassar mib[1] = KERN_ARGMAX; 8578527Sassar break; 8678527Sassar case _SC_CHILD_MAX: 8778527Sassar if (getrlimit(RLIMIT_NPROC, &rl) != 0) 8872445Sassar return (-1); 8978527Sassar if (rl.rlim_cur == RLIM_INFINITY) 9072445Sassar return (-1); 9172445Sassar if (rl.rlim_cur > LONG_MAX) { 9278527Sassar errno = EOVERFLOW; 9372445Sassar return (-1); 9490926Snectar } 9578527Sassar return ((long)rl.rlim_cur); 9678527Sassar case _SC_CLK_TCK: 9778527Sassar return (CLK_TCK); 9878527Sassar case _SC_NGROUPS_MAX: 9978527Sassar mib[0] = CTL_KERN; 10078527Sassar mib[1] = KERN_NGROUPS; 10178527Sassar break; 10278527Sassar case _SC_OPEN_MAX: 10378527Sassar if (getrlimit(RLIMIT_NOFILE, &rl) != 0) 104233294Sstas return (-1); 10578527Sassar if (rl.rlim_cur == RLIM_INFINITY) 10678527Sassar return (-1); 10772445Sassar if (rl.rlim_cur > LONG_MAX) { 10872445Sassar errno = EOVERFLOW; 10972445Sassar return (-1); 11072445Sassar } 11172445Sassar return ((long)rl.rlim_cur); 11272445Sassar case _SC_STREAM_MAX: 11372445Sassar if (getrlimit(RLIMIT_NOFILE, &rl) != 0) 11472445Sassar return (-1); 11572445Sassar if (rl.rlim_cur == RLIM_INFINITY) 11672445Sassar return (-1); 117233294Sstas if (rl.rlim_cur > LONG_MAX) { 11872445Sassar errno = EOVERFLOW; 11972445Sassar return (-1); 12072445Sassar } 12172445Sassar /* 12272445Sassar * struct __sFILE currently has a limitation that 12372445Sassar * file descriptors must fit in a signed short. 12472445Sassar * This doesn't precisely capture the letter of POSIX 12572445Sassar * but approximates the spirit. 12672445Sassar */ 12772445Sassar if (rl.rlim_cur > SHRT_MAX) 12878527Sassar return (SHRT_MAX); 12972445Sassar 13072445Sassar return ((long)rl.rlim_cur); 13172445Sassar case _SC_JOB_CONTROL: 13272445Sassar return (_POSIX_JOB_CONTROL); 13372445Sassar case _SC_SAVED_IDS: 13490926Snectar /* XXX - must be 1 */ 135233294Sstas mib[0] = CTL_KERN; 13690926Snectar mib[1] = KERN_SAVED_IDS; 13772445Sassar goto yesno; 13878527Sassar case _SC_VERSION: 13972445Sassar mib[0] = CTL_KERN; 14072445Sassar mib[1] = KERN_POSIX1; 14172445Sassar break; 14272445Sassar case _SC_BC_BASE_MAX: 14372445Sassar return (BC_BASE_MAX); 14472445Sassar case _SC_BC_DIM_MAX: 14572445Sassar return (BC_DIM_MAX); 14672445Sassar case _SC_BC_SCALE_MAX: 14772445Sassar return (BC_SCALE_MAX); 14872445Sassar case _SC_BC_STRING_MAX: 14972445Sassar return (BC_STRING_MAX); 15072445Sassar case _SC_COLL_WEIGHTS_MAX: 15178527Sassar return (COLL_WEIGHTS_MAX); 15272445Sassar case _SC_EXPR_NEST_MAX: 15390926Snectar return (EXPR_NEST_MAX); 15472445Sassar case _SC_LINE_MAX: 15572445Sassar return (LINE_MAX); 15672445Sassar case _SC_RE_DUP_MAX: 15772445Sassar return (RE_DUP_MAX); 15872445Sassar case _SC_2_VERSION: 15972445Sassar /* 160233294Sstas * This is something of a lie, but it would be silly at 16172445Sassar * this point to try to deduce this from the contents 16272445Sassar * of the filesystem. 16372445Sassar */ 16472445Sassar return (_POSIX2_VERSION); 16572445Sassar case _SC_2_C_BIND: 16672445Sassar return (_POSIX2_C_BIND); 16772445Sassar case _SC_2_C_DEV: 16872445Sassar return (_POSIX2_C_DEV); 16972445Sassar case _SC_2_CHAR_TERM: 17072445Sassar return (_POSIX2_CHAR_TERM); 17172445Sassar case _SC_2_FORT_DEV: 172233294Sstas return (_POSIX2_FORT_DEV); 17372445Sassar case _SC_2_FORT_RUN: 17472445Sassar return (_POSIX2_FORT_RUN); 17572445Sassar case _SC_2_LOCALEDEF: 17672445Sassar return (_POSIX2_LOCALEDEF); 177178825Sdfr case _SC_2_SW_DEV: 17872445Sassar return (_POSIX2_SW_DEV); 17972445Sassar case _SC_2_UPE: 18072445Sassar return (_POSIX2_UPE); 18172445Sassar case _SC_TZNAME_MAX: 18272445Sassar path = _PATH_ZONEINFO; 18390926Snectardo_NAME_MAX: 184233294Sstas sverrno = errno; 18572445Sassar errno = 0; 18672445Sassar lvalue = pathconf(path, _PC_NAME_MAX); 18772445Sassar if (lvalue == -1 && errno != 0) 18872445Sassar return (-1); 18972445Sassar errno = sverrno; 190178825Sdfr return (lvalue); 191178825Sdfr 192233294Sstas case _SC_ASYNCHRONOUS_IO: 193178825Sdfr#if _POSIX_ASYNCHRONOUS_IO == 0 19472445Sassar mib[0] = CTL_P1003_1B; 19572445Sassar mib[1] = CTL_P1003_1B_ASYNCHRONOUS_IO; 19690926Snectar break; 197233294Sstas#else 198178825Sdfr return (_POSIX_ASYNCHRONOUS_IO); 199178825Sdfr#endif 200233294Sstas case _SC_MAPPED_FILES: 201233294Sstas return (_POSIX_MAPPED_FILES); 202178825Sdfr case _SC_MEMLOCK: 203178825Sdfr return (_POSIX_MEMLOCK); 20490926Snectar case _SC_MEMLOCK_RANGE: 205178825Sdfr return (_POSIX_MEMLOCK_RANGE); 20690926Snectar case _SC_MEMORY_PROTECTION: 207233294Sstas return (_POSIX_MEMORY_PROTECTION); 20878527Sassar case _SC_MESSAGE_PASSING: 20972445Sassar#if _POSIX_MESSAGE_PASSING == 0 21072445Sassar mib[0] = CTL_P1003_1B; 211178825Sdfr mib[1] = CTL_P1003_1B_MESSAGE_PASSING; 21290926Snectar goto yesno; 21372445Sassar#else 21472445Sassar return (_POSIX_MESSAGE_PASSING); 21572445Sassar#endif 21672445Sassar case _SC_PRIORITIZED_IO: 21772445Sassar#if _POSIX_PRIORITIZED_IO == 0 21872445Sassar mib[0] = CTL_P1003_1B; 21972445Sassar mib[1] = CTL_P1003_1B_PRIORITIZED_IO; 22078527Sassar goto yesno; 22172445Sassar#else 22272445Sassar return (_POSIX_PRIORITIZED_IO); 22372445Sassar#endif 22472445Sassar case _SC_PRIORITY_SCHEDULING: 22572445Sassar#if _POSIX_PRIORITY_SCHEDULING == 0 22672445Sassar mib[0] = CTL_P1003_1B; 22772445Sassar mib[1] = CTL_P1003_1B_PRIORITY_SCHEDULING; 22878527Sassar goto yesno; 22972445Sassar#else 23090926Snectar return (_POSIX_PRIORITY_SCHEDULING); 23172445Sassar#endif 23272445Sassar case _SC_REALTIME_SIGNALS: 23372445Sassar#if _POSIX_REALTIME_SIGNALS == 0 234178825Sdfr mib[0] = CTL_P1003_1B; 235178825Sdfr mib[1] = CTL_P1003_1B_REALTIME_SIGNALS; 23672445Sassar goto yesno; 237178825Sdfr#else 23872445Sassar return (_POSIX_REALTIME_SIGNALS); 23972445Sassar#endif 240178825Sdfr case _SC_SEMAPHORES: 24190926Snectar#if _POSIX_SEMAPHORES == 0 242233294Sstas mib[0] = CTL_P1003_1B; 24372445Sassar mib[1] = CTL_P1003_1B_SEMAPHORES; 24478527Sassar goto yesno; 24572445Sassar#else 24672445Sassar return (_POSIX_SEMAPHORES); 24772445Sassar#endif 24872445Sassar case _SC_FSYNC: 24972445Sassar return (_POSIX_FSYNC); 25072445Sassar 25172445Sassar case _SC_SHARED_MEMORY_OBJECTS: 25272445Sassar return (_POSIX_SHARED_MEMORY_OBJECTS); 25372445Sassar case _SC_SYNCHRONIZED_IO: 25472445Sassar#if _POSIX_SYNCHRONIZED_IO == 0 25572445Sassar mib[0] = CTL_P1003_1B; 25672445Sassar mib[1] = CTL_P1003_1B_SYNCHRONIZED_IO; 25772445Sassar goto yesno; 25872445Sassar#else 25972445Sassar return (_POSIX_SYNCHRONIZED_IO); 26072445Sassar#endif 261178825Sdfr case _SC_TIMERS: 262178825Sdfr#if _POSIX_TIMERS == 0 26390926Snectar mib[0] = CTL_P1003_1B; 26472445Sassar mib[1] = CTL_P1003_1B_TIMERS; 26578527Sassar goto yesno; 26672445Sassar#else 26772445Sassar return (_POSIX_TIMERS); 26872445Sassar#endif 26978527Sassar case _SC_AIO_LISTIO_MAX: 27072445Sassar mib[0] = CTL_P1003_1B; 27178527Sassar mib[1] = CTL_P1003_1B_AIO_LISTIO_MAX; 27272445Sassar break; 27372445Sassar case _SC_AIO_MAX: 27472445Sassar mib[0] = CTL_P1003_1B; 27572445Sassar mib[1] = CTL_P1003_1B_AIO_MAX; 27672445Sassar break; 27778527Sassar case _SC_AIO_PRIO_DELTA_MAX: 27872445Sassar mib[0] = CTL_P1003_1B; 27972445Sassar mib[1] = CTL_P1003_1B_AIO_PRIO_DELTA_MAX; 28072445Sassar break; 28172445Sassar case _SC_DELAYTIMER_MAX: 28272445Sassar mib[0] = CTL_P1003_1B; 283233294Sstas mib[1] = CTL_P1003_1B_DELAYTIMER_MAX; 284233294Sstas goto yesno; 28572445Sassar case _SC_MQ_OPEN_MAX: 28672445Sassar mib[0] = CTL_P1003_1B; 28772445Sassar mib[1] = CTL_P1003_1B_MQ_OPEN_MAX; 28872445Sassar goto yesno; 28972445Sassar case _SC_PAGESIZE: 29072445Sassar defaultresult = getpagesize(); 29172445Sassar mib[0] = CTL_P1003_1B; 29272445Sassar mib[1] = CTL_P1003_1B_PAGESIZE; 29372445Sassar goto yesno; 29472445Sassar case _SC_RTSIG_MAX: 295233294Sstas mib[0] = CTL_P1003_1B; 296233294Sstas mib[1] = CTL_P1003_1B_RTSIG_MAX; 297233294Sstas goto yesno; 298233294Sstas case _SC_SEM_NSEMS_MAX: 29972445Sassar mib[0] = CTL_P1003_1B; 30072445Sassar mib[1] = CTL_P1003_1B_SEM_NSEMS_MAX; 30172445Sassar goto yesno; 30272445Sassar case _SC_SEM_VALUE_MAX: 30372445Sassar mib[0] = CTL_P1003_1B; 30472445Sassar mib[1] = CTL_P1003_1B_SEM_VALUE_MAX; 30572445Sassar goto yesno; 30672445Sassar case _SC_SIGQUEUE_MAX: 30772445Sassar mib[0] = CTL_P1003_1B; 30872445Sassar mib[1] = CTL_P1003_1B_SIGQUEUE_MAX; 30972445Sassar goto yesno; 31072445Sassar case _SC_TIMER_MAX: 31178527Sassar mib[0] = CTL_P1003_1B; 31272445Sassar mib[1] = CTL_P1003_1B_TIMER_MAX; 31372445Sassaryesno: 31478527Sassar len = sizeof(value); 31572445Sassar if (sysctl(mib, 2, &value, &len, NULL, 0) == -1) 31672445Sassar return (-1); 31772445Sassar if (value == 0) 318178825Sdfr return (defaultresult); 31972445Sassar return ((long)value); 32090926Snectar 321233294Sstas case _SC_2_PBS: 32290926Snectar case _SC_2_PBS_ACCOUNTING: 32390926Snectar case _SC_2_PBS_CHECKPOINT: 32478527Sassar case _SC_2_PBS_LOCATE: 32572445Sassar case _SC_2_PBS_MESSAGE: 32672445Sassar case _SC_2_PBS_TRACK: 32772445Sassar#if _POSIX2_PBS == 0 32878527Sassar#error "don't know how to determine _SC_2_PBS" 32972445Sassar /* 33072445Sassar * This probably requires digging through the filesystem 33172445Sassar * to see if the appropriate package has been installed. 33272445Sassar * Since we don't currently support this option at all, 33372445Sassar * it's not worth the effort to write the code now. 33472445Sassar * Figuring out which of the sub-options are supported 33572445Sassar * would be even more difficult, so it's probably easier 33672445Sassar * to always say ``no''. 33772445Sassar */ 338233294Sstas#else 33972445Sassar return (_POSIX2_PBS); 34072445Sassar#endif 34172445Sassar case _SC_ADVISORY_INFO: 34272445Sassar#if _POSIX_ADVISORY_INFO == 0 34378527Sassar#error "_POSIX_ADVISORY_INFO" 34472445Sassar#else 345233294Sstas return (_POSIX_ADVISORY_INFO); 34672445Sassar#endif 34772445Sassar case _SC_BARRIERS: 34872445Sassar#if _POSIX_BARRIERS == 0 34972445Sassar#error "_POSIX_BARRIERS" 35072445Sassar#else 35172445Sassar return (_POSIX_BARRIERS); 35272445Sassar#endif 35378527Sassar case _SC_CLOCK_SELECTION: 35472445Sassar#if _POSIX_CLOCK_SELECTION == 0 35572445Sassar#error "_POSIX_CLOCK_SELECTION" 35678527Sassar#else 35772445Sassar return (_POSIX_CLOCK_SELECTION); 35872445Sassar#endif 35972445Sassar case _SC_CPUTIME: 36072445Sassar#if _POSIX_CPUTIME == 0 36178527Sassar#error "_POSIX_CPUTIME" 36272445Sassar#else 36372445Sassar return (_POSIX_CPUTIME); 36472445Sassar#endif 36572445Sassar#ifdef notdef 36672445Sassar case _SC_FILE_LOCKING: 36772445Sassar /* 36872445Sassar * XXX - The standard doesn't tell us how to define 36972445Sassar * _POSIX_FILE_LOCKING, so we can't answer this one. 37072445Sassar */ 37172445Sassar#endif 37272445Sassar#if _POSIX_THREAD_SAFE_FUNCTIONS > -1 37372445Sassar case _SC_GETGR_R_SIZE_MAX: 37472445Sassar case _SC_GETPW_R_SIZE_MAX: 37572445Sassar#error "somebody needs to implement this" 37672445Sassar#endif 37778527Sassar case _SC_HOST_NAME_MAX: 37872445Sassar return (MAXHOSTNAMELEN - 1); /* does not include \0 */ 37972445Sassar case _SC_LOGIN_NAME_MAX: 38078527Sassar return (MAXLOGNAME); 38172445Sassar case _SC_MONOTONIC_CLOCK: 38272445Sassar#if _POSIX_MONOTONIC_CLOCK == 0 38372445Sassar#error "_POSIX_MONOTONIC_CLOCK" 38472445Sassar#else 38572445Sassar return (_POSIX_MONOTONIC_CLOCK); 38678527Sassar#endif 387233294Sstas#if _POSIX_MESSAGE_PASSING > -1 388233294Sstas case _SC_MQ_PRIO_MAX: 38978527Sassar return (MQ_PRIO_MAX); 39072445Sassar#endif 39172445Sassar case _SC_READER_WRITER_LOCKS: 39272445Sassar return (_POSIX_READER_WRITER_LOCKS); 39372445Sassar case _SC_REGEXP: 394233294Sstas return (_POSIX_REGEXP); 39572445Sassar case _SC_SHELL: 39672445Sassar return (_POSIX_SHELL); 39772445Sassar case _SC_SPAWN: 39872445Sassar return (_POSIX_SPAWN); 39972445Sassar case _SC_SPIN_LOCKS: 40072445Sassar return (_POSIX_SPIN_LOCKS); 40172445Sassar case _SC_SPORADIC_SERVER: 40272445Sassar#if _POSIX_SPORADIC_SERVER == 0 40378527Sassar#error "_POSIX_SPORADIC_SERVER" 40472445Sassar#else 40572445Sassar return (_POSIX_SPORADIC_SERVER); 40672445Sassar#endif 40778527Sassar case _SC_THREAD_ATTR_STACKADDR: 40878527Sassar return (_POSIX_THREAD_ATTR_STACKADDR); 40978527Sassar case _SC_THREAD_ATTR_STACKSIZE: 41072445Sassar return (_POSIX_THREAD_ATTR_STACKSIZE); 41172445Sassar case _SC_THREAD_CPUTIME: 41272445Sassar return (_POSIX_THREAD_CPUTIME); 41378527Sassar case _SC_THREAD_DESTRUCTOR_ITERATIONS: 41472445Sassar return (PTHREAD_DESTRUCTOR_ITERATIONS); 41572445Sassar case _SC_THREAD_KEYS_MAX: 41672445Sassar return (PTHREAD_KEYS_MAX); 41772445Sassar case _SC_THREAD_PRIO_INHERIT: 41872445Sassar return (_POSIX_THREAD_PRIO_INHERIT); 41972445Sassar case _SC_THREAD_PRIO_PROTECT: 42072445Sassar return (_POSIX_THREAD_PRIO_PROTECT); 42172445Sassar case _SC_THREAD_PRIORITY_SCHEDULING: 42272445Sassar return (_POSIX_THREAD_PRIORITY_SCHEDULING); 42372445Sassar case _SC_THREAD_PROCESS_SHARED: 42472445Sassar return (_POSIX_THREAD_PROCESS_SHARED); 42572445Sassar case _SC_THREAD_SAFE_FUNCTIONS: 42672445Sassar return (_POSIX_THREAD_SAFE_FUNCTIONS); 42772445Sassar case _SC_THREAD_STACK_MIN: 42872445Sassar return (PTHREAD_STACK_MIN); 42972445Sassar case _SC_THREAD_THREADS_MAX: 43072445Sassar return (PTHREAD_THREADS_MAX); /* XXX wrong type! */ 43172445Sassar case _SC_TIMEOUTS: 43278527Sassar return (_POSIX_TIMEOUTS); 43372445Sassar case _SC_THREADS: 43472445Sassar return (_POSIX_THREADS); 43572445Sassar case _SC_TRACE: 43672445Sassar#if _POSIX_TRACE == 0 43772445Sassar#error "_POSIX_TRACE" 43872445Sassar /* While you're implementing this, also do the ones below. */ 43972445Sassar#else 44078527Sassar return (_POSIX_TRACE); 44172445Sassar#endif 44272445Sassar#if _POSIX_TRACE > -1 44372445Sassar case _SC_TRACE_EVENT_FILTER: 44472445Sassar return (_POSIX_TRACE_EVENT_FILTER); 44572445Sassar case _SC_TRACE_INHERIT: 44672445Sassar return (_POSIX_TRACE_INHERIT); 44772445Sassar case _SC_TRACE_LOG: 44872445Sassar return (_POSIX_TRACE_LOG); 44972445Sassar#endif 45072445Sassar case _SC_TTY_NAME_MAX: 45172445Sassar path = _PATH_DEV; 45272445Sassar goto do_NAME_MAX; 45372445Sassar case _SC_TYPED_MEMORY_OBJECTS: 45472445Sassar#if _POSIX_TYPED_MEMORY_OBJECTS == 0 45572445Sassar#error "_POSIX_TYPED_MEMORY_OBJECTS" 45672445Sassar#else 45772445Sassar return (_POSIX_TYPED_MEMORY_OBJECTS); 45878527Sassar#endif 45972445Sassar case _SC_V6_ILP32_OFF32: 46072445Sassar#if _V6_ILP32_OFF32 == 0 46172445Sassar if (sizeof(int) * CHAR_BIT == 32 && 46272445Sassar sizeof(int) == sizeof(long) && 46372445Sassar sizeof(long) == sizeof(void *) && 46472445Sassar sizeof(void *) == sizeof(off_t)) 46572445Sassar return 1; 46678527Sassar else 46772445Sassar return -1; 46872445Sassar#else 46972445Sassar return (_V6_ILP32_OFF32); 47072445Sassar#endif 47172445Sassar case _SC_V6_ILP32_OFFBIG: 47272445Sassar#if _V6_ILP32_OFFBIG == 0 47372445Sassar if (sizeof(int) * CHAR_BIT == 32 && 47472445Sassar sizeof(int) == sizeof(long) && 47572445Sassar sizeof(long) == sizeof(void *) && 47672445Sassar sizeof(off_t) * CHAR_BIT >= 64) 47772445Sassar return 1; 47872445Sassar else 47972445Sassar return -1; 48072445Sassar#else 48172445Sassar return (_V6_ILP32_OFFBIG); 48272445Sassar#endif 48372445Sassar case _SC_V6_LP64_OFF64: 48472445Sassar#if _V6_LP64_OFF64 == 0 48572445Sassar if (sizeof(int) * CHAR_BIT == 32 && 48672445Sassar sizeof(long) * CHAR_BIT == 64 && 48772445Sassar sizeof(long) == sizeof(void *) && 48872445Sassar sizeof(void *) == sizeof(off_t)) 48978527Sassar return 1; 49072445Sassar else 49172445Sassar return -1; 49272445Sassar#else 49372445Sassar return (_V6_LP64_OFF64); 49472445Sassar#endif 49572445Sassar case _SC_V6_LPBIG_OFFBIG: 49672445Sassar#if _V6_LPBIG_OFFBIG == 0 49772445Sassar if (sizeof(int) * CHAR_BIT >= 32 && 49872445Sassar sizeof(long) * CHAR_BIT >= 64 && 49972445Sassar sizeof(void *) * CHAR_BIT >= 64 && 50072445Sassar sizeof(off_t) * CHAR_BIT >= 64) 50172445Sassar return 1; 50272445Sassar else 50372445Sassar return -1; 50472445Sassar#else 50572445Sassar return (_V6_LPBIG_OFFBIG); 50672445Sassar#endif 50772445Sassar case _SC_ATEXIT_MAX: 50872445Sassar return (ATEXIT_SIZE); 50972445Sassar case _SC_IOV_MAX: 51072445Sassar mib[0] = CTL_KERN; 51172445Sassar mib[1] = KERN_IOV_MAX; 51272445Sassar break; 51372445Sassar case _SC_XOPEN_CRYPT: 51472445Sassar return (_XOPEN_CRYPT); 51590926Snectar case _SC_XOPEN_ENH_I18N: 51672445Sassar return (_XOPEN_ENH_I18N); 51772445Sassar case _SC_XOPEN_LEGACY: 51872445Sassar return (_XOPEN_LEGACY); 51972445Sassar case _SC_XOPEN_REALTIME: 52072445Sassar#if _XOPEN_REALTIME == 0 52172445Sassar sverrno = errno; 52272445Sassar value = sysconf(_SC_ASYNCHRONOUS_IO) > 0 && 52372445Sassar sysconf(_SC_MEMLOCK) > 0 && 52472445Sassar sysconf(_SC_MEMLOCK_RANGE) > 0 && 52572445Sassar sysconf(_SC_MESSAGE_PASSING) > 0 && 52672445Sassar sysconf(_SC_PRIORITY_SCHEDULING) > 0 && 52772445Sassar sysconf(_SC_REALTIME_SIGNALS) > 0 && 52872445Sassar sysconf(_SC_SEMAPHORES) > 0 && 52978527Sassar sysconf(_SC_SHARED_MEMORY_OBJECTS) > 0 && 53072445Sassar sysconf(_SC_SYNCHRONIZED_IO) > 0 && 53172445Sassar sysconf(_SC_TIMERS) > 0; 53272445Sassar errno = sverrno; 53372445Sassar if (value) 53472445Sassar return (200112L); 53572445Sassar else 53672445Sassar return (-1); 53772445Sassar#else 53872445Sassar return (_XOPEN_REALTIME); 53972445Sassar#endif 54072445Sassar case _SC_XOPEN_REALTIME_THREADS: 54172445Sassar#if _XOPEN_REALTIME_THREADS == 0 54272445Sassar#error "_XOPEN_REALTIME_THREADS" 54378527Sassar#else 54472445Sassar return (_XOPEN_REALTIME_THREADS); 54572445Sassar#endif 54672445Sassar case _SC_XOPEN_SHM: 54772445Sassar len = sizeof(lvalue); 54872445Sassar sverrno = errno; 54972445Sassar if (sysctlbyname("kern.ipc.shmmin", &lvalue, &len, NULL, 55072445Sassar 0) == -1) { 55172445Sassar errno = sverrno; 55272445Sassar return (-1); 55372445Sassar } 55472445Sassar errno = sverrno; 55572445Sassar return (1); 55672445Sassar case _SC_XOPEN_STREAMS: 55772445Sassar return (_XOPEN_STREAMS); 55872445Sassar case _SC_XOPEN_UNIX: 55978527Sassar return (_XOPEN_UNIX); 56072445Sassar#ifdef _XOPEN_VERSION 56172445Sassar case _SC_XOPEN_VERSION: 56272445Sassar return (_XOPEN_VERSION); 56372445Sassar#endif 56472445Sassar#ifdef _XOPEN_XCU_VERSION 56572445Sassar case _SC_XOPEN_XCU_VERSION: 56672445Sassar return (_XOPEN_XCU_VERSION); 56772445Sassar#endif 56878527Sassar case _SC_SYMLOOP_MAX: 56972445Sassar return (MAXSYMLINKS); 57078527Sassar case _SC_RAW_SOCKETS: 57172445Sassar return (_POSIX_RAW_SOCKETS); 57272445Sassar case _SC_IPV6: 57372445Sassar#if _POSIX_IPV6 == 0 57472445Sassar sverrno = errno; 57572445Sassar value = socket(PF_INET6, SOCK_DGRAM, 0); 57672445Sassar errno = sverrno; 57772445Sassar if (value >= 0) { 57872445Sassar close(value); 57972445Sassar return (200112L); 58078527Sassar } else 58178527Sassar return (0); 58278527Sassar#else 58378527Sassar return (_POSIX_IPV6); 58478527Sassar#endif 58578527Sassar 58678527Sassar case _SC_NPROCESSORS_CONF: 58772445Sassar case _SC_NPROCESSORS_ONLN: 58872445Sassar mib[0] = CTL_HW; 58972445Sassar mib[1] = HW_NCPU; 590233294Sstas break; 59172445Sassar 59272445Sassar#ifdef _SC_PHYS_PAGES 59372445Sassar case _SC_PHYS_PAGES: 59472445Sassar len = sizeof(lvalue); 59572445Sassar if (sysctlbyname("hw.availpages", &lvalue, &len, NULL, 0) == -1) 59672445Sassar return (-1); 59772445Sassar return (lvalue); 59872445Sassar#endif 59972445Sassar 60072445Sassar default: 601233294Sstas errno = EINVAL; 60272445Sassar return (-1); 60372445Sassar } 60472445Sassar len = sizeof(value); 60572445Sassar if (sysctl(mib, 2, &value, &len, NULL, 0) == -1) 60672445Sassar value = -1; 60772445Sassar return ((long)value); 60872445Sassar} 60972445Sassar