sysconf.c revision 176618
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: head/lib/libc/gen/sysconf.c 176618 2008-02-27 05:56:57Z wollman $"); 381573Srgrimes 391573Srgrimes#include <sys/param.h> 4012674Sdg#include <sys/time.h> 411573Srgrimes#include <sys/sysctl.h> 421573Srgrimes#include <sys/resource.h> 43106055Swollman#include <sys/socket.h> 441573Srgrimes 451573Srgrimes#include <errno.h> 46103730Swollman#include <limits.h> 47103730Swollman#include <paths.h> 48103730Swollman#include <pthread.h> /* we just need the limits */ 496171Sbde#include <time.h> 501573Srgrimes#include <unistd.h> 511573Srgrimes 52103730Swollman#include "../stdlib/atexit.h" 53103730Swollman#include "../stdtime/tzfile.h" 54103730Swollman 55103730Swollman#define _PATH_ZONEINFO TZDIR /* from tzfile.h */ 56103730Swollman 571573Srgrimes/* 581573Srgrimes * sysconf -- 591573Srgrimes * get configurable system variables. 601573Srgrimes * 611573Srgrimes * XXX 621573Srgrimes * POSIX 1003.1 (ISO/IEC 9945-1, 4.8.1.3) states that the variable values 631573Srgrimes * not change during the lifetime of the calling process. This would seem 641573Srgrimes * to require that any change to system limits kill all running processes. 651573Srgrimes * A workaround might be to cache the values when they are first retrieved 661573Srgrimes * and then simply return the cached value on subsequent calls. This is 671573Srgrimes * less useful than returning up-to-date values, however. 681573Srgrimes */ 691573Srgrimeslong 701573Srgrimessysconf(name) 711573Srgrimes int name; 721573Srgrimes{ 731573Srgrimes struct rlimit rl; 741573Srgrimes size_t len; 75103730Swollman int mib[2], sverrno, value; 76168718Spjd long lvalue, defaultresult; 77103730Swollman const char *path; 781573Srgrimes 7936577Smsmith defaultresult = -1; 801573Srgrimes 811573Srgrimes switch (name) { 821573Srgrimes case _SC_ARG_MAX: 831573Srgrimes mib[0] = CTL_KERN; 841573Srgrimes mib[1] = KERN_ARGMAX; 851573Srgrimes break; 861573Srgrimes case _SC_CHILD_MAX: 87103730Swollman if (getrlimit(RLIMIT_NPROC, &rl) != 0) 88103730Swollman return (-1); 89103730Swollman if (rl.rlim_cur == RLIM_INFINITY) 90103730Swollman return (-1); 91103730Swollman if (rl.rlim_cur > LONG_MAX) { 92103730Swollman errno = EOVERFLOW; 93103730Swollman return (-1); 94103730Swollman } 95103730Swollman return ((long)rl.rlim_cur); 961573Srgrimes case _SC_CLK_TCK: 971573Srgrimes return (CLK_TCK); 981573Srgrimes case _SC_NGROUPS_MAX: 991573Srgrimes mib[0] = CTL_KERN; 1001573Srgrimes mib[1] = KERN_NGROUPS; 1011573Srgrimes break; 1021573Srgrimes case _SC_OPEN_MAX: 103103730Swollman if (getrlimit(RLIMIT_NOFILE, &rl) != 0) 104103730Swollman return (-1); 105103730Swollman if (rl.rlim_cur == RLIM_INFINITY) 106103730Swollman return (-1); 107103730Swollman if (rl.rlim_cur > LONG_MAX) { 108103730Swollman errno = EOVERFLOW; 109103730Swollman return (-1); 110103730Swollman } 111103730Swollman return ((long)rl.rlim_cur); 112176618Swollman case _SC_STREAM_MAX: 113176618Swollman if (getrlimit(RLIMIT_NOFILE, &rl) != 0) 114176618Swollman return (-1); 115176618Swollman if (rl.rlim_cur == RLIM_INFINITY) 116176618Swollman return (-1); 117176618Swollman if (rl.rlim_cur > LONG_MAX) { 118176618Swollman errno = EOVERFLOW; 119176618Swollman return (-1); 120176618Swollman } 121176618Swollman /* 122176618Swollman * struct __sFILE currently has a limitation that 123176618Swollman * file descriptors must fit in a signed short. 124176618Swollman * This doesn't precisely capture the letter of POSIX 125176618Swollman * but approximates the spirit. 126176618Swollman */ 127176618Swollman if (rl.rlim_cur > SHRT_MAX) 128176618Swollman return (SHRT_MAX); 129176618Swollman 130176618Swollman return ((long)rl.rlim_cur); 131103730Swollman case _SC_JOB_CONTROL: 132103730Swollman return (_POSIX_JOB_CONTROL); 1331573Srgrimes case _SC_SAVED_IDS: 134103730Swollman /* XXX - must be 1 */ 1351573Srgrimes mib[0] = CTL_KERN; 1361573Srgrimes mib[1] = KERN_SAVED_IDS; 1371573Srgrimes goto yesno; 1381573Srgrimes case _SC_VERSION: 1391573Srgrimes mib[0] = CTL_KERN; 1401573Srgrimes mib[1] = KERN_POSIX1; 1411573Srgrimes break; 1421573Srgrimes case _SC_BC_BASE_MAX: 143103730Swollman return (BC_BASE_MAX); 1441573Srgrimes case _SC_BC_DIM_MAX: 145103730Swollman return (BC_DIM_MAX); 1461573Srgrimes case _SC_BC_SCALE_MAX: 147103730Swollman return (BC_SCALE_MAX); 1481573Srgrimes case _SC_BC_STRING_MAX: 149103730Swollman return (BC_STRING_MAX); 1501573Srgrimes case _SC_COLL_WEIGHTS_MAX: 151103730Swollman return (COLL_WEIGHTS_MAX); 1521573Srgrimes case _SC_EXPR_NEST_MAX: 153103730Swollman return (EXPR_NEST_MAX); 1541573Srgrimes case _SC_LINE_MAX: 155103730Swollman return (LINE_MAX); 1561573Srgrimes case _SC_RE_DUP_MAX: 157103730Swollman return (RE_DUP_MAX); 1581573Srgrimes case _SC_2_VERSION: 159103730Swollman /* 160103730Swollman * This is something of a lie, but it would be silly at 161103730Swollman * this point to try to deduce this from the contents 162103730Swollman * of the filesystem. 163103730Swollman */ 164103730Swollman return (_POSIX2_VERSION); 1651573Srgrimes case _SC_2_C_BIND: 166103730Swollman return (_POSIX2_C_BIND); 1671573Srgrimes case _SC_2_C_DEV: 168103730Swollman return (_POSIX2_C_DEV); 1691573Srgrimes case _SC_2_CHAR_TERM: 170103730Swollman return (_POSIX2_CHAR_TERM); 1711573Srgrimes case _SC_2_FORT_DEV: 172103730Swollman return (_POSIX2_FORT_DEV); 1731573Srgrimes case _SC_2_FORT_RUN: 174103730Swollman return (_POSIX2_FORT_RUN); 1751573Srgrimes case _SC_2_LOCALEDEF: 176103730Swollman return (_POSIX2_LOCALEDEF); 1771573Srgrimes case _SC_2_SW_DEV: 178103730Swollman return (_POSIX2_SW_DEV); 1791573Srgrimes case _SC_2_UPE: 180103730Swollman return (_POSIX2_UPE); 181103730Swollman case _SC_TZNAME_MAX: 182103730Swollman path = _PATH_ZONEINFO; 183103730Swollmando_NAME_MAX: 184103730Swollman sverrno = errno; 185103730Swollman errno = 0; 186168718Spjd lvalue = pathconf(path, _PC_NAME_MAX); 187168718Spjd if (lvalue == -1 && errno != 0) 188103730Swollman return (-1); 189103730Swollman errno = sverrno; 190168718Spjd return (lvalue); 19134030Sdufault 19234030Sdufault case _SC_ASYNCHRONOUS_IO: 193106055Swollman#if _POSIX_ASYNCHRONOUS_IO == 0 19434925Sdufault mib[0] = CTL_P1003_1B; 19534925Sdufault mib[1] = CTL_P1003_1B_ASYNCHRONOUS_IO; 196106055Swollman break; 197106055Swollman#else 198106055Swollman return (_POSIX_ASYNCHRONOUS_IO); 199106055Swollman#endif 20034030Sdufault case _SC_MAPPED_FILES: 201103730Swollman return (_POSIX_MAPPED_FILES); 20234030Sdufault case _SC_MEMLOCK: 203103730Swollman return (_POSIX_MEMLOCK); 20434030Sdufault case _SC_MEMLOCK_RANGE: 205103730Swollman return (_POSIX_MEMLOCK_RANGE); 20634030Sdufault case _SC_MEMORY_PROTECTION: 207103730Swollman return (_POSIX_MEMORY_PROTECTION); 20834030Sdufault case _SC_MESSAGE_PASSING: 209103730Swollman#if _POSIX_MESSAGE_PASSING == 0 21034925Sdufault mib[0] = CTL_P1003_1B; 21134925Sdufault mib[1] = CTL_P1003_1B_MESSAGE_PASSING; 21234030Sdufault goto yesno; 213103730Swollman#else 214103730Swollman return (_POSIX_MESSAGE_PASSING); 215103730Swollman#endif 21634030Sdufault case _SC_PRIORITIZED_IO: 217103730Swollman#if _POSIX_PRIORITIZED_IO == 0 21834925Sdufault mib[0] = CTL_P1003_1B; 21934925Sdufault mib[1] = CTL_P1003_1B_PRIORITIZED_IO; 22034030Sdufault goto yesno; 221103730Swollman#else 222103730Swollman return (_POSIX_PRIORITIZED_IO); 223103730Swollman#endif 22434030Sdufault case _SC_PRIORITY_SCHEDULING: 225103730Swollman#if _POSIX_PRIORITY_SCHEDULING == 0 22634925Sdufault mib[0] = CTL_P1003_1B; 22734925Sdufault mib[1] = CTL_P1003_1B_PRIORITY_SCHEDULING; 22834030Sdufault goto yesno; 229103730Swollman#else 230103730Swollman return (_POSIX_PRIORITY_SCHEDULING); 231103730Swollman#endif 23234030Sdufault case _SC_REALTIME_SIGNALS: 233103730Swollman#if _POSIX_REALTIME_SIGNALS == 0 23434925Sdufault mib[0] = CTL_P1003_1B; 23534925Sdufault mib[1] = CTL_P1003_1B_REALTIME_SIGNALS; 23634030Sdufault goto yesno; 237103730Swollman#else 238103730Swollman return (_POSIX_REALTIME_SIGNALS); 239103730Swollman#endif 24034030Sdufault case _SC_SEMAPHORES: 241103730Swollman#if _POSIX_SEMAPHORES == 0 24234925Sdufault mib[0] = CTL_P1003_1B; 24334925Sdufault mib[1] = CTL_P1003_1B_SEMAPHORES; 24434030Sdufault goto yesno; 245103730Swollman#else 246103730Swollman return (_POSIX_SEMAPHORES); 247103730Swollman#endif 248103730Swollman case _SC_FSYNC: 249103730Swollman return (_POSIX_FSYNC); 250103730Swollman 25134030Sdufault case _SC_SHARED_MEMORY_OBJECTS: 252103730Swollman return (_POSIX_SHARED_MEMORY_OBJECTS); 25334030Sdufault case _SC_SYNCHRONIZED_IO: 254103730Swollman#if _POSIX_SYNCHRONIZED_IO == 0 25534925Sdufault mib[0] = CTL_P1003_1B; 25634925Sdufault mib[1] = CTL_P1003_1B_SYNCHRONIZED_IO; 25734030Sdufault goto yesno; 258103730Swollman#else 259103730Swollman return (_POSIX_SYNCHRONIZED_IO); 260103730Swollman#endif 26134030Sdufault case _SC_TIMERS: 262103730Swollman#if _POSIX_TIMERS == 0 26334925Sdufault mib[0] = CTL_P1003_1B; 26434925Sdufault mib[1] = CTL_P1003_1B_TIMERS; 26534030Sdufault goto yesno; 266103730Swollman#else 267103730Swollman return (_POSIX_TIMERS); 268103730Swollman#endif 26934030Sdufault case _SC_AIO_LISTIO_MAX: 27034925Sdufault mib[0] = CTL_P1003_1B; 27134925Sdufault mib[1] = CTL_P1003_1B_AIO_LISTIO_MAX; 272107000Sdougb break; 27334030Sdufault case _SC_AIO_MAX: 27434925Sdufault mib[0] = CTL_P1003_1B; 27534925Sdufault mib[1] = CTL_P1003_1B_AIO_MAX; 276107000Sdougb break; 27734030Sdufault case _SC_AIO_PRIO_DELTA_MAX: 27834925Sdufault mib[0] = CTL_P1003_1B; 27934925Sdufault mib[1] = CTL_P1003_1B_AIO_PRIO_DELTA_MAX; 280107000Sdougb break; 28134030Sdufault case _SC_DELAYTIMER_MAX: 28234925Sdufault mib[0] = CTL_P1003_1B; 28334925Sdufault mib[1] = CTL_P1003_1B_DELAYTIMER_MAX; 28434030Sdufault goto yesno; 28534030Sdufault case _SC_MQ_OPEN_MAX: 28634925Sdufault mib[0] = CTL_P1003_1B; 28734925Sdufault mib[1] = CTL_P1003_1B_MQ_OPEN_MAX; 28834030Sdufault goto yesno; 28934030Sdufault case _SC_PAGESIZE: 29036577Smsmith defaultresult = getpagesize(); 29134925Sdufault mib[0] = CTL_P1003_1B; 29234925Sdufault mib[1] = CTL_P1003_1B_PAGESIZE; 29334030Sdufault goto yesno; 29434030Sdufault case _SC_RTSIG_MAX: 29534925Sdufault mib[0] = CTL_P1003_1B; 29634925Sdufault mib[1] = CTL_P1003_1B_RTSIG_MAX; 29734030Sdufault goto yesno; 29834030Sdufault case _SC_SEM_NSEMS_MAX: 29934925Sdufault mib[0] = CTL_P1003_1B; 30034925Sdufault mib[1] = CTL_P1003_1B_SEM_NSEMS_MAX; 30134030Sdufault goto yesno; 30234030Sdufault case _SC_SEM_VALUE_MAX: 30334925Sdufault mib[0] = CTL_P1003_1B; 30434925Sdufault mib[1] = CTL_P1003_1B_SEM_VALUE_MAX; 30534030Sdufault goto yesno; 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#if _POSIX_CPUTIME == 0 361103730Swollman#error "_POSIX_CPUTIME" 362103730Swollman#else 363103730Swollman return (_POSIX_CPUTIME); 364103730Swollman#endif 365103730Swollman#ifdef notdef 366103730Swollman case _SC_FILE_LOCKING: 367103730Swollman /* 368103730Swollman * XXX - The standard doesn't tell us how to define 369103730Swollman * _POSIX_FILE_LOCKING, so we can't answer this one. 370103730Swollman */ 371103730Swollman#endif 372103730Swollman#if _POSIX_THREAD_SAFE_FUNCTIONS > -1 373103730Swollman case _SC_GETGR_R_SIZE_MAX: 374103730Swollman case _SC_GETPW_R_SIZE_MAX: 375103730Swollman#error "somebody needs to implement this" 376103730Swollman#endif 377103730Swollman case _SC_HOST_NAME_MAX: 378103730Swollman return (MAXHOSTNAMELEN - 1); /* does not include \0 */ 379103730Swollman case _SC_LOGIN_NAME_MAX: 380103730Swollman return (MAXLOGNAME); 381103730Swollman case _SC_MONOTONIC_CLOCK: 382103730Swollman#if _POSIX_MONOTONIC_CLOCK == 0 383103730Swollman#error "_POSIX_MONOTONIC_CLOCK" 384103730Swollman#else 385103730Swollman return (_POSIX_MONOTONIC_CLOCK); 386103730Swollman#endif 387103730Swollman#if _POSIX_MESSAGE_PASSING > -1 388103730Swollman case _SC_MQ_PRIO_MAX: 389103730Swollman return (MQ_PRIO_MAX); 390103730Swollman#endif 391103730Swollman case _SC_READER_WRITER_LOCKS: 392103730Swollman return (_POSIX_READER_WRITER_LOCKS); 393103730Swollman case _SC_REGEXP: 394103730Swollman return (_POSIX_REGEXP); 395103730Swollman case _SC_SHELL: 396103730Swollman return (_POSIX_SHELL); 397103730Swollman case _SC_SPAWN: 398103730Swollman return (_POSIX_SPAWN); 399103730Swollman case _SC_SPIN_LOCKS: 400103730Swollman return (_POSIX_SPIN_LOCKS); 401103730Swollman case _SC_SPORADIC_SERVER: 402103730Swollman#if _POSIX_SPORADIC_SERVER == 0 403103730Swollman#error "_POSIX_SPORADIC_SERVER" 404103730Swollman#else 405103730Swollman return (_POSIX_SPORADIC_SERVER); 406103730Swollman#endif 407103730Swollman case _SC_THREAD_ATTR_STACKADDR: 408103730Swollman return (_POSIX_THREAD_ATTR_STACKADDR); 409103730Swollman case _SC_THREAD_ATTR_STACKSIZE: 410103730Swollman return (_POSIX_THREAD_ATTR_STACKSIZE); 411103730Swollman case _SC_THREAD_CPUTIME: 412103730Swollman return (_POSIX_THREAD_CPUTIME); 413103730Swollman case _SC_THREAD_DESTRUCTOR_ITERATIONS: 414103730Swollman return (PTHREAD_DESTRUCTOR_ITERATIONS); 415103730Swollman case _SC_THREAD_KEYS_MAX: 416103730Swollman return (PTHREAD_KEYS_MAX); 417103730Swollman case _SC_THREAD_PRIO_INHERIT: 418103730Swollman return (_POSIX_THREAD_PRIO_INHERIT); 419103730Swollman case _SC_THREAD_PRIO_PROTECT: 420103730Swollman return (_POSIX_THREAD_PRIO_PROTECT); 421103730Swollman case _SC_THREAD_PRIORITY_SCHEDULING: 422103730Swollman return (_POSIX_THREAD_PRIORITY_SCHEDULING); 423103730Swollman case _SC_THREAD_PROCESS_SHARED: 424103730Swollman return (_POSIX_THREAD_PROCESS_SHARED); 425103730Swollman case _SC_THREAD_SAFE_FUNCTIONS: 426103730Swollman return (_POSIX_THREAD_SAFE_FUNCTIONS); 427103730Swollman case _SC_THREAD_STACK_MIN: 428103730Swollman return (PTHREAD_STACK_MIN); 429103730Swollman case _SC_THREAD_THREADS_MAX: 430103730Swollman return (PTHREAD_THREADS_MAX); /* XXX wrong type! */ 431103730Swollman case _SC_TIMEOUTS: 432103730Swollman return (_POSIX_TIMEOUTS); 433103730Swollman case _SC_THREADS: 434103730Swollman return (_POSIX_THREADS); 435103730Swollman case _SC_TRACE: 436103730Swollman#if _POSIX_TRACE == 0 437103730Swollman#error "_POSIX_TRACE" 438103730Swollman /* While you're implementing this, also do the ones below. */ 439103730Swollman#else 440103730Swollman return (_POSIX_TRACE); 441103730Swollman#endif 442103730Swollman#if _POSIX_TRACE > -1 443103730Swollman case _SC_TRACE_EVENT_FILTER: 444103730Swollman return (_POSIX_TRACE_EVENT_FILTER); 445103730Swollman case _SC_TRACE_INHERIT: 446103730Swollman return (_POSIX_TRACE_INHERIT); 447103730Swollman case _SC_TRACE_LOG: 448103730Swollman return (_POSIX_TRACE_LOG); 449103730Swollman#endif 450103730Swollman case _SC_TTY_NAME_MAX: 451103730Swollman path = _PATH_DEV; 452103730Swollman goto do_NAME_MAX; 453103730Swollman case _SC_TYPED_MEMORY_OBJECTS: 454103730Swollman#if _POSIX_TYPED_MEMORY_OBJECTS == 0 455103730Swollman#error "_POSIX_TYPED_MEMORY_OBJECTS" 456103730Swollman#else 457103730Swollman return (_POSIX_TYPED_MEMORY_OBJECTS); 458103730Swollman#endif 459103730Swollman case _SC_V6_ILP32_OFF32: 460103730Swollman#if _V6_ILP32_OFF32 == 0 461103730Swollman if (sizeof(int) * CHAR_BIT == 32 && 462103730Swollman sizeof(int) == sizeof(long) && 463103730Swollman sizeof(long) == sizeof(void *) && 464103730Swollman sizeof(void *) == sizeof(off_t)) 465103730Swollman return 1; 466103730Swollman else 467103730Swollman return -1; 468103730Swollman#else 469103730Swollman return (_V6_ILP32_OFF32); 470103730Swollman#endif 471103730Swollman case _SC_V6_ILP32_OFFBIG: 472103730Swollman#if _V6_ILP32_OFFBIG == 0 473103730Swollman if (sizeof(int) * CHAR_BIT == 32 && 474103730Swollman sizeof(int) == sizeof(long) && 475103730Swollman sizeof(long) == sizeof(void *) && 476103730Swollman sizeof(off_t) * CHAR_BIT >= 64) 477103730Swollman return 1; 478103730Swollman else 479103730Swollman return -1; 480103730Swollman#else 481103730Swollman return (_V6_ILP32_OFFBIG); 482103730Swollman#endif 483103730Swollman case _SC_V6_LP64_OFF64: 484103730Swollman#if _V6_LP64_OFF64 == 0 485103730Swollman if (sizeof(int) * CHAR_BIT == 32 && 486103730Swollman sizeof(long) * CHAR_BIT == 64 && 487103730Swollman sizeof(long) == sizeof(void *) && 488103730Swollman sizeof(void *) == sizeof(off_t)) 489103730Swollman return 1; 490103730Swollman else 491103730Swollman return -1; 492103730Swollman#else 493103730Swollman return (_V6_LP64_OFF64); 494103730Swollman#endif 495103730Swollman case _SC_V6_LPBIG_OFFBIG: 496103730Swollman#if _V6_LPBIG_OFFBIG == 0 497103730Swollman if (sizeof(int) * CHAR_BIT >= 32 && 498103730Swollman sizeof(long) * CHAR_BIT >= 64 && 499103730Swollman sizeof(void *) * CHAR_BIT >= 64 && 500103730Swollman sizeof(off_t) * CHAR_BIT >= 64) 501103730Swollman return 1; 502103730Swollman else 503103730Swollman return -1; 504103730Swollman#else 505103730Swollman return (_V6_LPBIG_OFFBIG); 506103730Swollman#endif 507103730Swollman case _SC_ATEXIT_MAX: 508103730Swollman return (ATEXIT_SIZE); 50978431Swollman case _SC_IOV_MAX: 51078431Swollman mib[0] = CTL_KERN; 51178431Swollman mib[1] = KERN_IOV_MAX; 51278431Swollman break; 513103730Swollman case _SC_XOPEN_CRYPT: 514103730Swollman return (_XOPEN_CRYPT); 515103730Swollman case _SC_XOPEN_ENH_I18N: 516103730Swollman return (_XOPEN_ENH_I18N); 517103730Swollman case _SC_XOPEN_LEGACY: 518103730Swollman return (_XOPEN_LEGACY); 519103730Swollman case _SC_XOPEN_REALTIME: 520103730Swollman#if _XOPEN_REALTIME == 0 521103730Swollman sverrno = errno; 522103730Swollman value = sysconf(_SC_ASYNCHRONOUS_IO) > 0 && 523103730Swollman sysconf(_SC_MEMLOCK) > 0 && 524103730Swollman sysconf(_SC_MEMLOCK_RANGE) > 0 && 525103730Swollman sysconf(_SC_MESSAGE_PASSING) > 0 && 526103730Swollman sysconf(_SC_PRIORITY_SCHEDULING) > 0 && 527103730Swollman sysconf(_SC_REALTIME_SIGNALS) > 0 && 528103730Swollman sysconf(_SC_SEMAPHORES) > 0 && 529103730Swollman sysconf(_SC_SHARED_MEMORY_OBJECTS) > 0 && 530103730Swollman sysconf(_SC_SYNCHRONIZED_IO) > 0 && 531103730Swollman sysconf(_SC_TIMERS) > 0; 532103730Swollman errno = sverrno; 533103730Swollman if (value) 534103730Swollman return (200112L); 535103730Swollman else 536103730Swollman return (-1); 537103730Swollman#else 538103730Swollman return (_XOPEN_REALTIME); 53978431Swollman#endif 540103730Swollman case _SC_XOPEN_REALTIME_THREADS: 541103730Swollman#if _XOPEN_REALTIME_THREADS == 0 542103730Swollman#error "_XOPEN_REALTIME_THREADS" 543103730Swollman#else 544103730Swollman return (_XOPEN_REALTIME_THREADS); 545103730Swollman#endif 546103730Swollman case _SC_XOPEN_SHM: 547168718Spjd len = sizeof(lvalue); 548103730Swollman sverrno = errno; 549168718Spjd if (sysctlbyname("kern.ipc.shmmin", &lvalue, &len, NULL, 550103730Swollman 0) == -1) { 551103730Swollman errno = sverrno; 552103730Swollman return (-1); 553103730Swollman } 554103730Swollman errno = sverrno; 555103730Swollman return (1); 556103730Swollman case _SC_XOPEN_STREAMS: 557103730Swollman return (_XOPEN_STREAMS); 558103730Swollman case _SC_XOPEN_UNIX: 559103730Swollman return (_XOPEN_UNIX); 560103730Swollman#ifdef _XOPEN_VERSION 561103730Swollman case _SC_XOPEN_VERSION: 562103730Swollman return (_XOPEN_VERSION); 563103730Swollman#endif 564103730Swollman#ifdef _XOPEN_XCU_VERSION 565103730Swollman case _SC_XOPEN_XCU_VERSION: 566103730Swollman return (_XOPEN_XCU_VERSION); 567103730Swollman#endif 568106055Swollman case _SC_SYMLOOP_MAX: 569106055Swollman return (MAXSYMLINKS); 570106055Swollman case _SC_RAW_SOCKETS: 571106055Swollman return (_POSIX_RAW_SOCKETS); 572106055Swollman case _SC_IPV6: 573106055Swollman#if _POSIX_IPV6 == 0 574106055Swollman sverrno = errno; 575106055Swollman value = socket(PF_INET6, SOCK_DGRAM, 0); 576106055Swollman errno = sverrno; 577106055Swollman if (value >= 0) { 578106055Swollman close(value); 579106055Swollman return (200112L); 580106055Swollman } else 581106055Swollman return (0); 582106055Swollman#else 583106055Swollman return (_POSIX_IPV6); 584106055Swollman#endif 58578431Swollman 586103730Swollman case _SC_NPROCESSORS_CONF: 587103730Swollman case _SC_NPROCESSORS_ONLN: 588103730Swollman mib[0] = CTL_HW; 589103730Swollman mib[1] = HW_NCPU; 590103730Swollman break; 591103730Swollman 592165232Simp#ifdef _SC_PHYS_PAGES 593165212Spjd case _SC_PHYS_PAGES: 594168718Spjd len = sizeof(lvalue); 595168718Spjd if (sysctlbyname("hw.availpages", &lvalue, &len, NULL, 0) == -1) 596168718Spjd return (-1); 597168718Spjd return (lvalue); 598165232Simp#endif 599165212Spjd 6001573Srgrimes default: 6011573Srgrimes errno = EINVAL; 6021573Srgrimes return (-1); 6031573Srgrimes } 604168718Spjd len = sizeof(value); 605168718Spjd if (sysctl(mib, 2, &value, &len, NULL, 0) == -1) 606168718Spjd value = -1; 607168718Spjd return ((long)value); 6081573Srgrimes} 609