11573Srgrimes/*- 21573Srgrimes * Copyright (c) 1993 31573Srgrimes * The Regents of the University of California. All rights reserved. 41573Srgrimes * 51573Srgrimes * This code is derived from software contributed to Berkeley by 61573Srgrimes * Sean Eric Fagan of Cygnus Support. 71573Srgrimes * 81573Srgrimes * Redistribution and use in source and binary forms, with or without 91573Srgrimes * modification, are permitted provided that the following conditions 101573Srgrimes * are met: 111573Srgrimes * 1. Redistributions of source code must retain the above copyright 121573Srgrimes * notice, this list of conditions and the following disclaimer. 131573Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 141573Srgrimes * notice, this list of conditions and the following disclaimer in the 151573Srgrimes * documentation and/or other materials provided with the distribution. 161573Srgrimes * 4. Neither the name of the University nor the names of its contributors 171573Srgrimes * may be used to endorse or promote products derived from this software 181573Srgrimes * without specific prior written permission. 191573Srgrimes * 201573Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 211573Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 221573Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 231573Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 241573Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 251573Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 261573Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 271573Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 281573Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 291573Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 301573Srgrimes * SUCH DAMAGE. 311573Srgrimes */ 321573Srgrimes 331573Srgrimes#if defined(LIBC_SCCS) && !defined(lint) 341573Srgrimesstatic char sccsid[] = "@(#)sysconf.c 8.2 (Berkeley) 3/20/94"; 351573Srgrimes#endif /* LIBC_SCCS and not lint */ 3690039Sobrien#include <sys/cdefs.h> 3790039Sobrien__FBSDID("$FreeBSD: stable/11/lib/libc/gen/sysconf.c 317130 2017-04-19 10:54:08Z kib $"); 381573Srgrimes 39292521Sjilles#include "namespace.h" 401573Srgrimes#include <sys/param.h> 4112674Sdg#include <sys/time.h> 421573Srgrimes#include <sys/sysctl.h> 431573Srgrimes#include <sys/resource.h> 44106055Swollman#include <sys/socket.h> 451573Srgrimes 46237660Skib#include <elf.h> 471573Srgrimes#include <errno.h> 48103730Swollman#include <limits.h> 49103730Swollman#include <paths.h> 50103730Swollman#include <pthread.h> /* we just need the limits */ 51317130Skib#include <semaphore.h> 526171Sbde#include <time.h> 531573Srgrimes#include <unistd.h> 54292521Sjilles#include "un-namespace.h" 551573Srgrimes 56103730Swollman#include "../stdlib/atexit.h" 57204347Sedwin#include "tzfile.h" /* from ../../../contrib/tzcode/stdtime */ 58237660Skib#include "libc_private.h" 59103730Swollman 60103730Swollman#define _PATH_ZONEINFO TZDIR /* from tzfile.h */ 61103730Swollman 621573Srgrimes/* 631573Srgrimes * sysconf -- 641573Srgrimes * get configurable system variables. 651573Srgrimes * 661573Srgrimes * XXX 671573Srgrimes * POSIX 1003.1 (ISO/IEC 9945-1, 4.8.1.3) states that the variable values 681573Srgrimes * not change during the lifetime of the calling process. This would seem 691573Srgrimes * to require that any change to system limits kill all running processes. 701573Srgrimes * A workaround might be to cache the values when they are first retrieved 711573Srgrimes * and then simply return the cached value on subsequent calls. This is 721573Srgrimes * less useful than returning up-to-date values, however. 731573Srgrimes */ 741573Srgrimeslong 75288029Srodrigcsysconf(int name) 761573Srgrimes{ 771573Srgrimes struct rlimit rl; 781573Srgrimes size_t len; 79103730Swollman int mib[2], sverrno, value; 80168718Spjd long lvalue, defaultresult; 81103730Swollman const char *path; 821573Srgrimes 8336577Smsmith defaultresult = -1; 841573Srgrimes 851573Srgrimes switch (name) { 861573Srgrimes case _SC_ARG_MAX: 871573Srgrimes mib[0] = CTL_KERN; 881573Srgrimes mib[1] = KERN_ARGMAX; 891573Srgrimes break; 901573Srgrimes case _SC_CHILD_MAX: 91103730Swollman if (getrlimit(RLIMIT_NPROC, &rl) != 0) 92103730Swollman return (-1); 93103730Swollman if (rl.rlim_cur == RLIM_INFINITY) 94103730Swollman return (-1); 95103730Swollman if (rl.rlim_cur > LONG_MAX) { 96103730Swollman errno = EOVERFLOW; 97103730Swollman return (-1); 98103730Swollman } 99103730Swollman return ((long)rl.rlim_cur); 1001573Srgrimes case _SC_CLK_TCK: 1011573Srgrimes return (CLK_TCK); 1021573Srgrimes case _SC_NGROUPS_MAX: 1031573Srgrimes mib[0] = CTL_KERN; 1041573Srgrimes mib[1] = KERN_NGROUPS; 1051573Srgrimes break; 1061573Srgrimes case _SC_OPEN_MAX: 107103730Swollman if (getrlimit(RLIMIT_NOFILE, &rl) != 0) 108103730Swollman return (-1); 109103730Swollman if (rl.rlim_cur == RLIM_INFINITY) 110103730Swollman return (-1); 111103730Swollman if (rl.rlim_cur > LONG_MAX) { 112103730Swollman errno = EOVERFLOW; 113103730Swollman return (-1); 114103730Swollman } 115103730Swollman return ((long)rl.rlim_cur); 116176618Swollman case _SC_STREAM_MAX: 117176618Swollman if (getrlimit(RLIMIT_NOFILE, &rl) != 0) 118176618Swollman return (-1); 119176618Swollman if (rl.rlim_cur == RLIM_INFINITY) 120176618Swollman return (-1); 121176618Swollman if (rl.rlim_cur > LONG_MAX) { 122176618Swollman errno = EOVERFLOW; 123176618Swollman return (-1); 124176618Swollman } 125176618Swollman /* 126176618Swollman * struct __sFILE currently has a limitation that 127176618Swollman * file descriptors must fit in a signed short. 128176618Swollman * This doesn't precisely capture the letter of POSIX 129176618Swollman * but approximates the spirit. 130176618Swollman */ 131176618Swollman if (rl.rlim_cur > SHRT_MAX) 132176618Swollman return (SHRT_MAX); 133176618Swollman 134176618Swollman return ((long)rl.rlim_cur); 135103730Swollman case _SC_JOB_CONTROL: 136103730Swollman return (_POSIX_JOB_CONTROL); 1371573Srgrimes case _SC_SAVED_IDS: 138103730Swollman /* XXX - must be 1 */ 1391573Srgrimes mib[0] = CTL_KERN; 1401573Srgrimes mib[1] = KERN_SAVED_IDS; 1411573Srgrimes goto yesno; 1421573Srgrimes case _SC_VERSION: 1431573Srgrimes mib[0] = CTL_KERN; 1441573Srgrimes mib[1] = KERN_POSIX1; 1451573Srgrimes break; 1461573Srgrimes case _SC_BC_BASE_MAX: 147103730Swollman return (BC_BASE_MAX); 1481573Srgrimes case _SC_BC_DIM_MAX: 149103730Swollman return (BC_DIM_MAX); 1501573Srgrimes case _SC_BC_SCALE_MAX: 151103730Swollman return (BC_SCALE_MAX); 1521573Srgrimes case _SC_BC_STRING_MAX: 153103730Swollman return (BC_STRING_MAX); 1541573Srgrimes case _SC_COLL_WEIGHTS_MAX: 155103730Swollman return (COLL_WEIGHTS_MAX); 1561573Srgrimes case _SC_EXPR_NEST_MAX: 157103730Swollman return (EXPR_NEST_MAX); 1581573Srgrimes case _SC_LINE_MAX: 159103730Swollman return (LINE_MAX); 1601573Srgrimes case _SC_RE_DUP_MAX: 161103730Swollman return (RE_DUP_MAX); 1621573Srgrimes case _SC_2_VERSION: 163103730Swollman /* 164103730Swollman * This is something of a lie, but it would be silly at 165103730Swollman * this point to try to deduce this from the contents 166103730Swollman * of the filesystem. 167103730Swollman */ 168103730Swollman return (_POSIX2_VERSION); 1691573Srgrimes case _SC_2_C_BIND: 170103730Swollman return (_POSIX2_C_BIND); 1711573Srgrimes case _SC_2_C_DEV: 172103730Swollman return (_POSIX2_C_DEV); 1731573Srgrimes case _SC_2_CHAR_TERM: 174103730Swollman return (_POSIX2_CHAR_TERM); 1751573Srgrimes case _SC_2_FORT_DEV: 176103730Swollman return (_POSIX2_FORT_DEV); 1771573Srgrimes case _SC_2_FORT_RUN: 178103730Swollman return (_POSIX2_FORT_RUN); 1791573Srgrimes case _SC_2_LOCALEDEF: 180103730Swollman return (_POSIX2_LOCALEDEF); 1811573Srgrimes case _SC_2_SW_DEV: 182103730Swollman return (_POSIX2_SW_DEV); 1831573Srgrimes case _SC_2_UPE: 184103730Swollman return (_POSIX2_UPE); 185103730Swollman case _SC_TZNAME_MAX: 186103730Swollman path = _PATH_ZONEINFO; 187103730Swollmando_NAME_MAX: 188103730Swollman sverrno = errno; 189103730Swollman errno = 0; 190168718Spjd lvalue = pathconf(path, _PC_NAME_MAX); 191168718Spjd if (lvalue == -1 && errno != 0) 192103730Swollman return (-1); 193103730Swollman errno = sverrno; 194168718Spjd return (lvalue); 19534030Sdufault 19634030Sdufault case _SC_ASYNCHRONOUS_IO: 197106055Swollman#if _POSIX_ASYNCHRONOUS_IO == 0 19834925Sdufault mib[0] = CTL_P1003_1B; 19934925Sdufault mib[1] = CTL_P1003_1B_ASYNCHRONOUS_IO; 200106055Swollman break; 201106055Swollman#else 202106055Swollman return (_POSIX_ASYNCHRONOUS_IO); 203106055Swollman#endif 20434030Sdufault case _SC_MAPPED_FILES: 205103730Swollman return (_POSIX_MAPPED_FILES); 20634030Sdufault case _SC_MEMLOCK: 207103730Swollman return (_POSIX_MEMLOCK); 20834030Sdufault case _SC_MEMLOCK_RANGE: 209103730Swollman return (_POSIX_MEMLOCK_RANGE); 21034030Sdufault case _SC_MEMORY_PROTECTION: 211103730Swollman return (_POSIX_MEMORY_PROTECTION); 21234030Sdufault case _SC_MESSAGE_PASSING: 213103730Swollman#if _POSIX_MESSAGE_PASSING == 0 21434925Sdufault mib[0] = CTL_P1003_1B; 21534925Sdufault mib[1] = CTL_P1003_1B_MESSAGE_PASSING; 21634030Sdufault goto yesno; 217103730Swollman#else 218103730Swollman return (_POSIX_MESSAGE_PASSING); 219103730Swollman#endif 22034030Sdufault case _SC_PRIORITIZED_IO: 221103730Swollman#if _POSIX_PRIORITIZED_IO == 0 22234925Sdufault mib[0] = CTL_P1003_1B; 22334925Sdufault mib[1] = CTL_P1003_1B_PRIORITIZED_IO; 22434030Sdufault goto yesno; 225103730Swollman#else 226103730Swollman return (_POSIX_PRIORITIZED_IO); 227103730Swollman#endif 22834030Sdufault case _SC_PRIORITY_SCHEDULING: 229103730Swollman#if _POSIX_PRIORITY_SCHEDULING == 0 23034925Sdufault mib[0] = CTL_P1003_1B; 23134925Sdufault mib[1] = CTL_P1003_1B_PRIORITY_SCHEDULING; 23234030Sdufault goto yesno; 233103730Swollman#else 234103730Swollman return (_POSIX_PRIORITY_SCHEDULING); 235103730Swollman#endif 23634030Sdufault case _SC_REALTIME_SIGNALS: 237103730Swollman#if _POSIX_REALTIME_SIGNALS == 0 23834925Sdufault mib[0] = CTL_P1003_1B; 23934925Sdufault mib[1] = CTL_P1003_1B_REALTIME_SIGNALS; 24034030Sdufault goto yesno; 241103730Swollman#else 242103730Swollman return (_POSIX_REALTIME_SIGNALS); 243103730Swollman#endif 24434030Sdufault case _SC_SEMAPHORES: 245103730Swollman#if _POSIX_SEMAPHORES == 0 24634925Sdufault mib[0] = CTL_P1003_1B; 24734925Sdufault mib[1] = CTL_P1003_1B_SEMAPHORES; 24834030Sdufault goto yesno; 249103730Swollman#else 250103730Swollman return (_POSIX_SEMAPHORES); 251103730Swollman#endif 252103730Swollman case _SC_FSYNC: 253103730Swollman return (_POSIX_FSYNC); 254103730Swollman 25534030Sdufault case _SC_SHARED_MEMORY_OBJECTS: 256103730Swollman return (_POSIX_SHARED_MEMORY_OBJECTS); 25734030Sdufault case _SC_SYNCHRONIZED_IO: 258103730Swollman#if _POSIX_SYNCHRONIZED_IO == 0 25934925Sdufault mib[0] = CTL_P1003_1B; 26034925Sdufault mib[1] = CTL_P1003_1B_SYNCHRONIZED_IO; 26134030Sdufault goto yesno; 262103730Swollman#else 263103730Swollman return (_POSIX_SYNCHRONIZED_IO); 264103730Swollman#endif 26534030Sdufault case _SC_TIMERS: 266103730Swollman#if _POSIX_TIMERS == 0 26734925Sdufault mib[0] = CTL_P1003_1B; 26834925Sdufault mib[1] = CTL_P1003_1B_TIMERS; 26934030Sdufault goto yesno; 270103730Swollman#else 271103730Swollman return (_POSIX_TIMERS); 272103730Swollman#endif 27334030Sdufault case _SC_AIO_LISTIO_MAX: 27434925Sdufault mib[0] = CTL_P1003_1B; 27534925Sdufault mib[1] = CTL_P1003_1B_AIO_LISTIO_MAX; 276107000Sdougb break; 27734030Sdufault case _SC_AIO_MAX: 27834925Sdufault mib[0] = CTL_P1003_1B; 27934925Sdufault mib[1] = CTL_P1003_1B_AIO_MAX; 280107000Sdougb break; 28134030Sdufault case _SC_AIO_PRIO_DELTA_MAX: 28234925Sdufault mib[0] = CTL_P1003_1B; 28334925Sdufault mib[1] = CTL_P1003_1B_AIO_PRIO_DELTA_MAX; 284107000Sdougb break; 28534030Sdufault case _SC_DELAYTIMER_MAX: 28634925Sdufault mib[0] = CTL_P1003_1B; 28734925Sdufault mib[1] = CTL_P1003_1B_DELAYTIMER_MAX; 28834030Sdufault goto yesno; 28934030Sdufault case _SC_MQ_OPEN_MAX: 29034925Sdufault mib[0] = CTL_P1003_1B; 29134925Sdufault mib[1] = CTL_P1003_1B_MQ_OPEN_MAX; 29234030Sdufault goto yesno; 29334030Sdufault case _SC_PAGESIZE: 29436577Smsmith defaultresult = getpagesize(); 29534925Sdufault mib[0] = CTL_P1003_1B; 29634925Sdufault mib[1] = CTL_P1003_1B_PAGESIZE; 29734030Sdufault goto yesno; 29834030Sdufault case _SC_RTSIG_MAX: 29934925Sdufault mib[0] = CTL_P1003_1B; 30034925Sdufault mib[1] = CTL_P1003_1B_RTSIG_MAX; 30134030Sdufault goto yesno; 30234030Sdufault case _SC_SEM_NSEMS_MAX: 303317130Skib return (-1); 30434030Sdufault case _SC_SEM_VALUE_MAX: 305317130Skib return (SEM_VALUE_MAX); 30634030Sdufault case _SC_SIGQUEUE_MAX: 30734925Sdufault mib[0] = CTL_P1003_1B; 30834925Sdufault mib[1] = CTL_P1003_1B_SIGQUEUE_MAX; 30934030Sdufault goto yesno; 31034030Sdufault case _SC_TIMER_MAX: 31134925Sdufault mib[0] = CTL_P1003_1B; 31234925Sdufault mib[1] = CTL_P1003_1B_TIMER_MAX; 313168718Spjdyesno: 314168718Spjd len = sizeof(value); 315168718Spjd if (sysctl(mib, 2, &value, &len, NULL, 0) == -1) 316103730Swollman return (-1); 317103730Swollman if (value == 0) 318103730Swollman return (defaultresult); 319168718Spjd return ((long)value); 320100142Swollman 321103730Swollman case _SC_2_PBS: 322103730Swollman case _SC_2_PBS_ACCOUNTING: 323103730Swollman case _SC_2_PBS_CHECKPOINT: 324103730Swollman case _SC_2_PBS_LOCATE: 325103730Swollman case _SC_2_PBS_MESSAGE: 326103730Swollman case _SC_2_PBS_TRACK: 327103730Swollman#if _POSIX2_PBS == 0 328103730Swollman#error "don't know how to determine _SC_2_PBS" 329103730Swollman /* 330103730Swollman * This probably requires digging through the filesystem 331103730Swollman * to see if the appropriate package has been installed. 332103730Swollman * Since we don't currently support this option at all, 333103730Swollman * it's not worth the effort to write the code now. 334103730Swollman * Figuring out which of the sub-options are supported 335103730Swollman * would be even more difficult, so it's probably easier 336103730Swollman * to always say ``no''. 337103730Swollman */ 338103730Swollman#else 339103730Swollman return (_POSIX2_PBS); 34087161Sjkoshy#endif 341103730Swollman case _SC_ADVISORY_INFO: 342103730Swollman#if _POSIX_ADVISORY_INFO == 0 343103730Swollman#error "_POSIX_ADVISORY_INFO" 344103730Swollman#else 345103730Swollman return (_POSIX_ADVISORY_INFO); 346103730Swollman#endif 347103730Swollman case _SC_BARRIERS: 348103730Swollman#if _POSIX_BARRIERS == 0 349103730Swollman#error "_POSIX_BARRIERS" 350103730Swollman#else 351103730Swollman return (_POSIX_BARRIERS); 352103730Swollman#endif 353103730Swollman case _SC_CLOCK_SELECTION: 354103730Swollman#if _POSIX_CLOCK_SELECTION == 0 355103730Swollman#error "_POSIX_CLOCK_SELECTION" 356103730Swollman#else 357103730Swollman return (_POSIX_CLOCK_SELECTION); 358103730Swollman#endif 359103730Swollman case _SC_CPUTIME: 360103730Swollman return (_POSIX_CPUTIME); 361103730Swollman#ifdef notdef 362103730Swollman case _SC_FILE_LOCKING: 363103730Swollman /* 364103730Swollman * XXX - The standard doesn't tell us how to define 365103730Swollman * _POSIX_FILE_LOCKING, so we can't answer this one. 366103730Swollman */ 367103730Swollman#endif 368268467Skib 369268467Skib /* 370268467Skib * SUSv4tc1 says the following about _SC_GETGR_R_SIZE_MAX and 371268467Skib * _SC_GETPW_R_SIZE_MAX: 372268467Skib * Note that sysconf(_SC_GETGR_R_SIZE_MAX) may return -1 if 373268467Skib * there is no hard limit on the size of the buffer needed to 374268467Skib * store all the groups returned. 375268467Skib */ 376103730Swollman case _SC_GETGR_R_SIZE_MAX: 377103730Swollman case _SC_GETPW_R_SIZE_MAX: 378268467Skib return (-1); 379103730Swollman case _SC_HOST_NAME_MAX: 380103730Swollman return (MAXHOSTNAMELEN - 1); /* does not include \0 */ 381103730Swollman case _SC_LOGIN_NAME_MAX: 382103730Swollman return (MAXLOGNAME); 383103730Swollman case _SC_MONOTONIC_CLOCK: 384103730Swollman#if _POSIX_MONOTONIC_CLOCK == 0 385103730Swollman#error "_POSIX_MONOTONIC_CLOCK" 386103730Swollman#else 387103730Swollman return (_POSIX_MONOTONIC_CLOCK); 388103730Swollman#endif 389103730Swollman#if _POSIX_MESSAGE_PASSING > -1 390103730Swollman case _SC_MQ_PRIO_MAX: 391103730Swollman return (MQ_PRIO_MAX); 392103730Swollman#endif 393103730Swollman case _SC_READER_WRITER_LOCKS: 394103730Swollman return (_POSIX_READER_WRITER_LOCKS); 395103730Swollman case _SC_REGEXP: 396103730Swollman return (_POSIX_REGEXP); 397103730Swollman case _SC_SHELL: 398103730Swollman return (_POSIX_SHELL); 399103730Swollman case _SC_SPAWN: 400103730Swollman return (_POSIX_SPAWN); 401103730Swollman case _SC_SPIN_LOCKS: 402103730Swollman return (_POSIX_SPIN_LOCKS); 403103730Swollman case _SC_SPORADIC_SERVER: 404103730Swollman#if _POSIX_SPORADIC_SERVER == 0 405103730Swollman#error "_POSIX_SPORADIC_SERVER" 406103730Swollman#else 407103730Swollman return (_POSIX_SPORADIC_SERVER); 408103730Swollman#endif 409103730Swollman case _SC_THREAD_ATTR_STACKADDR: 410103730Swollman return (_POSIX_THREAD_ATTR_STACKADDR); 411103730Swollman case _SC_THREAD_ATTR_STACKSIZE: 412103730Swollman return (_POSIX_THREAD_ATTR_STACKSIZE); 413103730Swollman case _SC_THREAD_CPUTIME: 414103730Swollman return (_POSIX_THREAD_CPUTIME); 415103730Swollman case _SC_THREAD_DESTRUCTOR_ITERATIONS: 416103730Swollman return (PTHREAD_DESTRUCTOR_ITERATIONS); 417103730Swollman case _SC_THREAD_KEYS_MAX: 418103730Swollman return (PTHREAD_KEYS_MAX); 419103730Swollman case _SC_THREAD_PRIO_INHERIT: 420103730Swollman return (_POSIX_THREAD_PRIO_INHERIT); 421103730Swollman case _SC_THREAD_PRIO_PROTECT: 422103730Swollman return (_POSIX_THREAD_PRIO_PROTECT); 423103730Swollman case _SC_THREAD_PRIORITY_SCHEDULING: 424103730Swollman return (_POSIX_THREAD_PRIORITY_SCHEDULING); 425103730Swollman case _SC_THREAD_PROCESS_SHARED: 426103730Swollman return (_POSIX_THREAD_PROCESS_SHARED); 427103730Swollman case _SC_THREAD_SAFE_FUNCTIONS: 428103730Swollman return (_POSIX_THREAD_SAFE_FUNCTIONS); 429103730Swollman case _SC_THREAD_STACK_MIN: 430103730Swollman return (PTHREAD_STACK_MIN); 431103730Swollman case _SC_THREAD_THREADS_MAX: 432103730Swollman return (PTHREAD_THREADS_MAX); /* XXX wrong type! */ 433103730Swollman case _SC_TIMEOUTS: 434103730Swollman return (_POSIX_TIMEOUTS); 435103730Swollman case _SC_THREADS: 436103730Swollman return (_POSIX_THREADS); 437103730Swollman case _SC_TRACE: 438103730Swollman#if _POSIX_TRACE == 0 439103730Swollman#error "_POSIX_TRACE" 440103730Swollman /* While you're implementing this, also do the ones below. */ 441103730Swollman#else 442103730Swollman return (_POSIX_TRACE); 443103730Swollman#endif 444103730Swollman#if _POSIX_TRACE > -1 445103730Swollman case _SC_TRACE_EVENT_FILTER: 446103730Swollman return (_POSIX_TRACE_EVENT_FILTER); 447103730Swollman case _SC_TRACE_INHERIT: 448103730Swollman return (_POSIX_TRACE_INHERIT); 449103730Swollman case _SC_TRACE_LOG: 450103730Swollman return (_POSIX_TRACE_LOG); 451103730Swollman#endif 452103730Swollman case _SC_TTY_NAME_MAX: 453103730Swollman path = _PATH_DEV; 454103730Swollman goto do_NAME_MAX; 455103730Swollman case _SC_TYPED_MEMORY_OBJECTS: 456103730Swollman#if _POSIX_TYPED_MEMORY_OBJECTS == 0 457103730Swollman#error "_POSIX_TYPED_MEMORY_OBJECTS" 458103730Swollman#else 459103730Swollman return (_POSIX_TYPED_MEMORY_OBJECTS); 460103730Swollman#endif 461103730Swollman case _SC_V6_ILP32_OFF32: 462103730Swollman#if _V6_ILP32_OFF32 == 0 463103730Swollman if (sizeof(int) * CHAR_BIT == 32 && 464103730Swollman sizeof(int) == sizeof(long) && 465103730Swollman sizeof(long) == sizeof(void *) && 466103730Swollman sizeof(void *) == sizeof(off_t)) 467103730Swollman return 1; 468103730Swollman else 469103730Swollman return -1; 470103730Swollman#else 471103730Swollman return (_V6_ILP32_OFF32); 472103730Swollman#endif 473103730Swollman case _SC_V6_ILP32_OFFBIG: 474103730Swollman#if _V6_ILP32_OFFBIG == 0 475103730Swollman if (sizeof(int) * CHAR_BIT == 32 && 476103730Swollman sizeof(int) == sizeof(long) && 477103730Swollman sizeof(long) == sizeof(void *) && 478103730Swollman sizeof(off_t) * CHAR_BIT >= 64) 479103730Swollman return 1; 480103730Swollman else 481103730Swollman return -1; 482103730Swollman#else 483103730Swollman return (_V6_ILP32_OFFBIG); 484103730Swollman#endif 485103730Swollman case _SC_V6_LP64_OFF64: 486103730Swollman#if _V6_LP64_OFF64 == 0 487103730Swollman if (sizeof(int) * CHAR_BIT == 32 && 488103730Swollman sizeof(long) * CHAR_BIT == 64 && 489103730Swollman sizeof(long) == sizeof(void *) && 490103730Swollman sizeof(void *) == sizeof(off_t)) 491103730Swollman return 1; 492103730Swollman else 493103730Swollman return -1; 494103730Swollman#else 495103730Swollman return (_V6_LP64_OFF64); 496103730Swollman#endif 497103730Swollman case _SC_V6_LPBIG_OFFBIG: 498103730Swollman#if _V6_LPBIG_OFFBIG == 0 499103730Swollman if (sizeof(int) * CHAR_BIT >= 32 && 500103730Swollman sizeof(long) * CHAR_BIT >= 64 && 501103730Swollman sizeof(void *) * CHAR_BIT >= 64 && 502103730Swollman sizeof(off_t) * CHAR_BIT >= 64) 503103730Swollman return 1; 504103730Swollman else 505103730Swollman return -1; 506103730Swollman#else 507103730Swollman return (_V6_LPBIG_OFFBIG); 508103730Swollman#endif 509103730Swollman case _SC_ATEXIT_MAX: 510103730Swollman return (ATEXIT_SIZE); 51178431Swollman case _SC_IOV_MAX: 51278431Swollman mib[0] = CTL_KERN; 51378431Swollman mib[1] = KERN_IOV_MAX; 51478431Swollman break; 515103730Swollman case _SC_XOPEN_CRYPT: 516103730Swollman return (_XOPEN_CRYPT); 517103730Swollman case _SC_XOPEN_ENH_I18N: 518103730Swollman return (_XOPEN_ENH_I18N); 519103730Swollman case _SC_XOPEN_LEGACY: 520103730Swollman return (_XOPEN_LEGACY); 521103730Swollman case _SC_XOPEN_REALTIME: 522103730Swollman#if _XOPEN_REALTIME == 0 523103730Swollman sverrno = errno; 524103730Swollman value = sysconf(_SC_ASYNCHRONOUS_IO) > 0 && 525103730Swollman sysconf(_SC_MEMLOCK) > 0 && 526103730Swollman sysconf(_SC_MEMLOCK_RANGE) > 0 && 527103730Swollman sysconf(_SC_MESSAGE_PASSING) > 0 && 528103730Swollman sysconf(_SC_PRIORITY_SCHEDULING) > 0 && 529103730Swollman sysconf(_SC_REALTIME_SIGNALS) > 0 && 530103730Swollman sysconf(_SC_SEMAPHORES) > 0 && 531103730Swollman sysconf(_SC_SHARED_MEMORY_OBJECTS) > 0 && 532103730Swollman sysconf(_SC_SYNCHRONIZED_IO) > 0 && 533103730Swollman sysconf(_SC_TIMERS) > 0; 534103730Swollman errno = sverrno; 535103730Swollman if (value) 536103730Swollman return (200112L); 537103730Swollman else 538103730Swollman return (-1); 539103730Swollman#else 540103730Swollman return (_XOPEN_REALTIME); 54178431Swollman#endif 542103730Swollman case _SC_XOPEN_REALTIME_THREADS: 543103730Swollman#if _XOPEN_REALTIME_THREADS == 0 544103730Swollman#error "_XOPEN_REALTIME_THREADS" 545103730Swollman#else 546103730Swollman return (_XOPEN_REALTIME_THREADS); 547103730Swollman#endif 548103730Swollman case _SC_XOPEN_SHM: 549168718Spjd len = sizeof(lvalue); 550103730Swollman sverrno = errno; 551168718Spjd if (sysctlbyname("kern.ipc.shmmin", &lvalue, &len, NULL, 552103730Swollman 0) == -1) { 553103730Swollman errno = sverrno; 554103730Swollman return (-1); 555103730Swollman } 556103730Swollman errno = sverrno; 557103730Swollman return (1); 558103730Swollman case _SC_XOPEN_STREAMS: 559103730Swollman return (_XOPEN_STREAMS); 560103730Swollman case _SC_XOPEN_UNIX: 561103730Swollman return (_XOPEN_UNIX); 562103730Swollman#ifdef _XOPEN_VERSION 563103730Swollman case _SC_XOPEN_VERSION: 564103730Swollman return (_XOPEN_VERSION); 565103730Swollman#endif 566103730Swollman#ifdef _XOPEN_XCU_VERSION 567103730Swollman case _SC_XOPEN_XCU_VERSION: 568103730Swollman return (_XOPEN_XCU_VERSION); 569103730Swollman#endif 570106055Swollman case _SC_SYMLOOP_MAX: 571106055Swollman return (MAXSYMLINKS); 572106055Swollman case _SC_RAW_SOCKETS: 573106055Swollman return (_POSIX_RAW_SOCKETS); 574106055Swollman case _SC_IPV6: 575106055Swollman#if _POSIX_IPV6 == 0 576106055Swollman sverrno = errno; 577292521Sjilles value = _socket(PF_INET6, SOCK_DGRAM, 0); 578106055Swollman errno = sverrno; 579106055Swollman if (value >= 0) { 580292521Sjilles _close(value); 581106055Swollman return (200112L); 582106055Swollman } else 583106055Swollman return (0); 584106055Swollman#else 585106055Swollman return (_POSIX_IPV6); 586106055Swollman#endif 58778431Swollman 588103730Swollman case _SC_NPROCESSORS_CONF: 589103730Swollman case _SC_NPROCESSORS_ONLN: 590237660Skib if (_elf_aux_info(AT_NCPUS, &value, sizeof(value)) == 0) 591237660Skib return ((long)value); 592103730Swollman mib[0] = CTL_HW; 593103730Swollman mib[1] = HW_NCPU; 594103730Swollman break; 595103730Swollman 596165232Simp#ifdef _SC_PHYS_PAGES 597165212Spjd case _SC_PHYS_PAGES: 598168718Spjd len = sizeof(lvalue); 599168718Spjd if (sysctlbyname("hw.availpages", &lvalue, &len, NULL, 0) == -1) 600168718Spjd return (-1); 601168718Spjd return (lvalue); 602165232Simp#endif 603165212Spjd 604214510Sdavidxu#ifdef _SC_CPUSET_SIZE 605214510Sdavidxu case _SC_CPUSET_SIZE: 606223136Sdavidxu len = sizeof(value); 607223136Sdavidxu if (sysctlbyname("kern.sched.cpusetsize", &value, &len, NULL, 608214510Sdavidxu 0) == -1) 609214510Sdavidxu return (-1); 610223136Sdavidxu return ((long)value); 611214510Sdavidxu#endif 612214510Sdavidxu 6131573Srgrimes default: 6141573Srgrimes errno = EINVAL; 6151573Srgrimes return (-1); 6161573Srgrimes } 617168718Spjd len = sizeof(value); 618168718Spjd if (sysctl(mib, 2, &value, &len, NULL, 0) == -1) 619168718Spjd value = -1; 620168718Spjd return ((long)value); 6211573Srgrimes} 622