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📁 ..
📄 Makefile.inc(11.75 KB)
📄 Symbol.map(8.61 KB)
📄 __getosreldate.c(2.34 KB)
📄 __pthread_mutex_init_calloc_cb_stub.c(1.78 KB)
📄 __xuname.c(3.54 KB)
📄 _once_stub.c(2.45 KB)
📄 _pthread_stubs.c(13.83 KB)
📄 _rand48.c(1.37 KB)
📄 _spinlock_stub.c(2.33 KB)
📄 _thread_init.c(1.74 KB)
📄 alarm.3(2.8 KB)
📄 alarm.c(2.1 KB)
📄 arc4random-compat.c(2.35 KB)
📄 arc4random.3(4.78 KB)
📄 arc4random.c(5.87 KB)
📄 arc4random.h(4.11 KB)
📄 arc4random_uniform.c(1.77 KB)
📄 assert.c(2.12 KB)
📄 auxv.3(3.28 KB)
📄 auxv.c(8.11 KB)
📄 basename.3(2.22 KB)
📄 basename.c(1.91 KB)
📄 basename_compat.c(2.18 KB)
📄 cap_rights_get.3(3.53 KB)
📄 cap_sandboxed.3(2.45 KB)
📄 cap_sandboxed.c(1.79 KB)
📄 check_utility_compat.3(2.99 KB)
📄 check_utility_compat.c(2.3 KB)
📄 clock.3(2.59 KB)
📄 clock.c(2.16 KB)
📄 clock_getcpuclockid.3(3.31 KB)
📄 clock_getcpuclockid.c(1.67 KB)
📄 closedir.c(2.38 KB)
📄 confstr.3(3.6 KB)
📄 confstr.c(3.78 KB)
📄 crypt.c(3.13 KB)
📄 ctermid.3(3.03 KB)
📄 ctermid.c(2.21 KB)
📄 daemon.3(3.92 KB)
📄 daemon.c(3.09 KB)
📄 devname-compat11.c(1.79 KB)
📄 devname.3(3.25 KB)
📄 devname.c(2.41 KB)
📄 directory.3(8.7 KB)
📄 dirfd.c(1.62 KB)
📄 dirname.3(2.22 KB)
📄 dirname.c(2.29 KB)
📄 dirname_compat.c(2.05 KB)
📄 disklabel.c(4.86 KB)
📄 dl_iterate_phdr.3(3.27 KB)
📄 dladdr.3(3.92 KB)
📄 dlfcn.c(6.44 KB)
📄 dlinfo.3(7.14 KB)
📄 dllockinit.3(3.9 KB)
📄 dlopen.3(11.35 KB)
📄 drand48.c(605 B)
📄 dup3.3(2.74 KB)
📄 dup3.c(1.96 KB)
📄 elf_utils.c(3.67 KB)
📄 erand48.c(691 B)
📄 err.3(5.79 KB)
📄 err.c(4.35 KB)
📄 errlst.c(8.3 KB)
📄 errno.c(1.45 KB)
📄 eventfd.c(1.79 KB)
📄 exec.3(9.24 KB)
📄 exec.c(7 KB)
📄 exect.c(1.61 KB)
📄 fdevname.c(1.83 KB)
📄 feature_present.3(2.48 KB)
📄 feature_present.c(2.26 KB)
📄 fmtcheck.3(3.27 KB)
📄 fmtcheck.c(6.92 KB)
📄 fmtmsg.3(6.45 KB)
📄 fmtmsg.c(5.86 KB)
📄 fnmatch.3(4.11 KB)
📄 fnmatch.c(8.85 KB)
📄 fpclassify.3(3.11 KB)
📄 fpclassify.c(2.67 KB)
📄 frexp.3(2.76 KB)
📄 frexp.c(1.88 KB)
📄 fstab.c(6.85 KB)
📄 ftok.3(2.71 KB)
📄 ftok.c(1.83 KB)
📄 fts-compat.c(32.07 KB)
📄 fts-compat.h(5.28 KB)
📄 fts-compat11.c(31.65 KB)
📄 fts-compat11.h(3.85 KB)
📄 fts.3(19.27 KB)
📄 fts.c(30.66 KB)
📄 ftw-compat11.c(2.59 KB)
📄 ftw.3(5.7 KB)
📄 ftw.c(2.28 KB)
📄 gen-compat.h(2.35 KB)
📄 gen-private.h(2.64 KB)
📄 getbootfile.3(2.57 KB)
📄 getbootfile.c(2.01 KB)
📄 getbsize.3(3.05 KB)
📄 getbsize.c(3 KB)
📄 getcap.3(14.8 KB)
📄 getcap.c(22.93 KB)
📄 getcontext.3(4.92 KB)
📄 getcwd.3(4.08 KB)
📄 getcwd.c(5.61 KB)
📄 getdiskbyname.3(2.23 KB)
📄 getdomainname.3(2.94 KB)
📄 getdomainname.c(1.98 KB)
📄 getentropy.3(2.05 KB)
📄 getentropy.c(4.09 KB)
📄 getfsent.3(4.54 KB)
📄 getgrent.3(6.7 KB)
📄 getgrent.c(34.33 KB)
📄 getgrouplist.3(2.81 KB)
📄 getgrouplist.c(2.03 KB)
📄 gethostname.3(3.58 KB)
📄 gethostname.c(2.02 KB)
📄 getloadavg.3(2.44 KB)
📄 getloadavg.c(2.39 KB)
📄 getlogin.c(2.65 KB)
📄 getmntinfo-compat11.c(2.61 KB)
📄 getmntinfo.3(3.1 KB)
📄 getmntinfo.c(2.57 KB)
📄 getnetgrent.3(4.02 KB)
📄 getnetgrent.c(24.86 KB)
📄 getosreldate.3(2.48 KB)
📄 getosreldate.c(2.09 KB)
📄 getpagesize.3(2.17 KB)
📄 getpagesize.c(2.46 KB)
📄 getpagesizes.3(2.94 KB)
📄 getpagesizes.c(2.99 KB)
📄 getpass.3(3 KB)
📄 getpeereid.3(3.36 KB)
📄 getpeereid.c(1.95 KB)
📄 getprogname.3(3.1 KB)
📄 getprogname.c(249 B)
📄 getpwent.3(7.67 KB)
📄 getpwent.c(44.7 KB)
📄 getttyent.3(5.75 KB)
📄 getttyent.c(6.7 KB)
📄 getusershell.3(2.86 KB)
📄 getusershell.c(5.74 KB)
📄 getutxent.3(11.32 KB)
📄 getutxent.c(4.89 KB)
📄 getvfsbyname.3(3.44 KB)
📄 getvfsbyname.c(3.1 KB)
📄 glob-compat11.c(25.67 KB)
📄 glob-compat11.h(2.8 KB)
📄 glob.3(10.79 KB)
📄 glob.c(26.49 KB)
📄 initgroups.3(2.62 KB)
📄 initgroups.c(2.33 KB)
📄 isatty.c(1.84 KB)
📄 isgreater.3(2.86 KB)
📄 isinf.c(2.14 KB)
📄 isnan.c(2.36 KB)
📄 jrand48.c(662 B)
📄 lcong48.c(832 B)
📄 ldexp.3(2.47 KB)
📄 ldexp.c(2.89 KB)
📄 libc_dlopen.c(1.88 KB)
📄 lockf.3(7.27 KB)
📄 lockf.c(2.55 KB)
📄 lrand48.c(670 B)
📄 makecontext.3(4.25 KB)
📄 memalign.c(1.63 KB)
📄 modf.3(2.63 KB)
📄 modf.c(2.95 KB)
📄 mrand48.c(709 B)
📄 nftw-compat11.c(2.91 KB)
📄 nftw.c(2.71 KB)
📄 nice.3(2.92 KB)
📄 nice.c(2.14 KB)
📄 nlist.3(2.55 KB)
📄 nlist.c(7.54 KB)
📄 nrand48.c(628 B)
📄 opendir.c(8.52 KB)
📄 pause.3(2.36 KB)
📄 pause.c(2.01 KB)
📄 pmadvise.c(425 B)
📄 popen.3(4.86 KB)
📄 popen.c(6 KB)
📄 posix_spawn.3(14.35 KB)
📄 posix_spawn.c(14.04 KB)
📄 posix_spawn_file_actions_addopen.3(6.28 KB)
📄 posix_spawn_file_actions_init.3(3.78 KB)
📄 posix_spawnattr_getflags.3(3.81 KB)
📄 posix_spawnattr_getpgroup.3(3.45 KB)
📄 posix_spawnattr_getschedparam.3(3.69 KB)
📄 posix_spawnattr_getschedpolicy.3(3.63 KB)
📄 posix_spawnattr_getsigdefault.3(3.65 KB)
📄 posix_spawnattr_getsigmask.3(3.56 KB)
📄 posix_spawnattr_init.3(4.09 KB)
📄 psignal.3(3.18 KB)
📄 psignal.c(2.22 KB)
📄 pututxline.c(7.34 KB)
📄 pw_scan.c(6.3 KB)
📄 pw_scan.h(1.8 KB)
📄 raise.3(2.31 KB)
📄 raise.c(1.96 KB)
📄 rand48.3(4.56 KB)
📄 rand48.h(811 B)
📄 readdir-compat11.c(3.63 KB)
📄 readdir.c(3.91 KB)
📄 readpassphrase.3(4.77 KB)
📄 readpassphrase.c(5.65 KB)
📄 recvmmsg.c(2.83 KB)
📄 rewinddir.c(2.29 KB)
📄 rfork_thread.3(2.7 KB)
📄 scandir-compat11.c(4.89 KB)
📄 scandir.3(3.86 KB)
📄 scandir.c(4.8 KB)
📄 scandir_b.c(1.38 KB)
📄 seed48.c(1 KB)
📄 seekdir.c(2.17 KB)
📄 sem.c(11.4 KB)
📄 sem_destroy.3(2.51 KB)
📄 sem_getvalue.3(2.56 KB)
📄 sem_init.3(2.81 KB)
📄 sem_new.c(9.95 KB)
📄 sem_open.3(5.37 KB)
📄 sem_post.3(2.45 KB)
📄 sem_timedwait.3(5 KB)
📄 sem_wait.3(2.73 KB)
📄 semctl.c(2.67 KB)
📄 sendmmsg.c(2.1 KB)
📄 setdomainname.c(1.97 KB)
📄 sethostname.c(1.96 KB)
📄 setjmp.3(4.48 KB)
📄 setjmperr.c(2.11 KB)
📄 setmode.3(3.56 KB)
📄 setmode.c(11.38 KB)
📄 setproctitle.3(3.54 KB)
📄 setproctitle.c(4.87 KB)
📄 setprogname.c(273 B)
📄 siginterrupt.3(3.74 KB)
📄 siginterrupt.c(2.29 KB)
📄 siglist.c(3.49 KB)
📄 signal.3(9.11 KB)
📄 signal.c(2.17 KB)
📄 sigsetops.3(4.15 KB)
📄 sigsetops.c(3.04 KB)
📄 sleep.3(2.88 KB)
📄 sleep.c(2.61 KB)
📄 srand48.c(859 B)
📄 statvfs.3(4.96 KB)
📄 statvfs.c(3.82 KB)
📄 stringlist.3(3.14 KB)
📄 stringlist.c(2.74 KB)
📄 strtofflags.3(2.96 KB)
📄 strtofflags.c(4.78 KB)
📄 sysconf.3(8.75 KB)
📄 sysconf.c(15.62 KB)
📄 sysctl.3(28.37 KB)
📄 sysctl.c(5.35 KB)
📄 sysctlbyname.c(1.81 KB)
📄 sysctlnametomib.c(2.14 KB)
📄 syslog.3(7.35 KB)
📄 syslog.c(12.21 KB)
📄 tcgetpgrp.3(2.6 KB)
📄 tcgetsid.3(2.24 KB)
📄 tcgetwinsize.3(4.62 KB)
📄 tcsendbreak.3(4.75 KB)
📄 tcsetattr.3(8.86 KB)
📄 tcsetpgrp.3(3.09 KB)
📄 tcsetsid.3(2.83 KB)
📄 telldir.c(5.62 KB)
📄 telldir.h(3.84 KB)
📄 termios.c(5.63 KB)
📄 time.3(2.94 KB)
📄 time.c(1.93 KB)
📄 times.3(3.62 KB)
📄 times.c(2.49 KB)
📄 timespec_get.3(2.52 KB)
📄 timespec_get.c(1.92 KB)
📄 timezone.3(2.29 KB)
📄 timezone.c(3.94 KB)
📄 tls.c(12.39 KB)
📄 trivial-getcontextx.c(1.97 KB)
📄 ttyname.3(3.39 KB)
📄 ttyname.c(3.24 KB)
📄 ttyslot.c(1.8 KB)
📄 tzset.3(7.41 KB)
📄 ualarm.3(2.88 KB)
📄 ualarm.c(2.33 KB)
📄 ucontext.3(3.57 KB)
📄 ulimit.3(2.8 KB)
📄 ulimit.c(2.25 KB)
📄 uname.3(3.14 KB)
📄 uname.c(1.91 KB)
📄 unvis-compat.c(1.89 KB)
📄 usleep.3(2.75 KB)
📄 usleep.c(2.2 KB)
📄 utime.3(2.74 KB)
📄 utime.c(2 KB)
📄 utxdb.c(4.56 KB)
📄 utxdb.h(2.2 KB)
📄 valloc.3(2.37 KB)
📄 valloc.c(1.85 KB)
📄 wait.c(2.1 KB)
📄 wait3.c(2.13 KB)
📄 waitid.c(2.49 KB)
📄 waitpid.c(2.15 KB)
📄 wordexp.3(5.04 KB)
📄 wordexp.c(10.48 KB)

Editing: sysconf.c

/*-
 * SPDX-License-Identifier: BSD-3-Clause
 *
 * Copyright (c) 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Sean Eric Fagan of Cygnus Support.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <sys/cdefs.h>
__SCCSID("@(#)sysconf.c	8.2 (Berkeley) 3/20/94");
__FBSDID("$FreeBSD$");

#include "namespace.h"
#include <sys/param.h>
#include <sys/time.h>
#include <sys/sysctl.h>
#include <sys/resource.h>
#include <sys/socket.h>

#include <elf.h>
#include <errno.h>
#include <limits.h>
#include <paths.h>
#include <pthread.h>		/* we just need the limits */
#include <semaphore.h>
#include <time.h>
#include <unistd.h>
#include "un-namespace.h"

#include "../stdlib/atexit.h"
#include "tzfile.h"		/* from ../../../contrib/tzcode/stdtime */
#include "libc_private.h"

#define	_PATH_ZONEINFO	TZDIR	/* from tzfile.h */

/*
 * sysconf --
 *	get configurable system variables.
 *
 * XXX
 * POSIX 1003.1 (ISO/IEC 9945-1, 4.8.1.3) states that the variable values
 * not change during the lifetime of the calling process.  This would seem
 * to require that any change to system limits kill all running processes.
 * A workaround might be to cache the values when they are first retrieved
 * and then simply return the cached value on subsequent calls.  This is
 * less useful than returning up-to-date values, however.
 */
long
sysconf(int name)
{
	struct rlimit rl;
	size_t len;
	int mib[2], sverrno, value;
	long lvalue, defaultresult;
	const char *path;

defaultresult = -1;

switch (name) {
	case _SC_ARG_MAX:
		mib[0] = CTL_KERN;
		mib[1] = KERN_ARGMAX;
		break;
	case _SC_CHILD_MAX:
		if (getrlimit(RLIMIT_NPROC, &rl) != 0)
			return (-1);
		if (rl.rlim_cur == RLIM_INFINITY)
			return (-1);
		if (rl.rlim_cur > LONG_MAX) {
			errno = EOVERFLOW;
			return (-1);
		}
		return ((long)rl.rlim_cur);
	case _SC_CLK_TCK:
		return (CLK_TCK);
	case _SC_NGROUPS_MAX:
		mib[0] = CTL_KERN;
		mib[1] = KERN_NGROUPS;
		break;
	case _SC_OPEN_MAX:
		if (getrlimit(RLIMIT_NOFILE, &rl) != 0)
			return (-1);
		if (rl.rlim_cur == RLIM_INFINITY)
			return (-1);
		if (rl.rlim_cur > LONG_MAX) {
			errno = EOVERFLOW;
			return (-1);
		}
		return ((long)rl.rlim_cur);
	case _SC_STREAM_MAX:
		if (getrlimit(RLIMIT_NOFILE, &rl) != 0)
			return (-1);
		if (rl.rlim_cur == RLIM_INFINITY)
			return (-1);
		if (rl.rlim_cur > LONG_MAX) {
			errno = EOVERFLOW;
			return (-1);
		}
		/*
		 * struct __sFILE currently has a limitation that
		 * file descriptors must fit in a signed short.
		 * This doesn't precisely capture the letter of POSIX
		 * but approximates the spirit.
		 */
		if (rl.rlim_cur > SHRT_MAX)
			return (SHRT_MAX);

return ((long)rl.rlim_cur);
	case _SC_JOB_CONTROL:
		return (_POSIX_JOB_CONTROL);
	case _SC_SAVED_IDS:
		/* XXX - must be 1 */
		mib[0] = CTL_KERN;
		mib[1] = KERN_SAVED_IDS;
		goto yesno;
	case _SC_VERSION:
		mib[0] = CTL_KERN;
		mib[1] = KERN_POSIX1;
		break;
	case _SC_BC_BASE_MAX:
		return (BC_BASE_MAX);
	case _SC_BC_DIM_MAX:
		return (BC_DIM_MAX);
	case _SC_BC_SCALE_MAX:
		return (BC_SCALE_MAX);
	case _SC_BC_STRING_MAX:
		return (BC_STRING_MAX);
	case _SC_COLL_WEIGHTS_MAX:
		return (COLL_WEIGHTS_MAX);
	case _SC_EXPR_NEST_MAX:
		return (EXPR_NEST_MAX);
	case _SC_LINE_MAX:
		return (LINE_MAX);
	case _SC_RE_DUP_MAX:
		return (RE_DUP_MAX);
	case _SC_2_VERSION:
		/*
		 * This is something of a lie, but it would be silly at
		 * this point to try to deduce this from the contents
		 * of the filesystem.
		 */
		return (_POSIX2_VERSION);
	case _SC_2_C_BIND:
		return (_POSIX2_C_BIND);
	case _SC_2_C_DEV:
		return (_POSIX2_C_DEV);
	case _SC_2_CHAR_TERM:
		return (_POSIX2_CHAR_TERM);
	case _SC_2_FORT_DEV:
		return (_POSIX2_FORT_DEV);
	case _SC_2_FORT_RUN:
		return (_POSIX2_FORT_RUN);
	case _SC_2_LOCALEDEF:
		return (_POSIX2_LOCALEDEF);
	case _SC_2_SW_DEV:
		return (_POSIX2_SW_DEV);
	case _SC_2_UPE:
		return (_POSIX2_UPE);
	case _SC_TZNAME_MAX:
		path = _PATH_ZONEINFO;
do_NAME_MAX:
		sverrno = errno;
		errno = 0;
		lvalue = pathconf(path, _PC_NAME_MAX);
		if (lvalue == -1 && errno != 0)
			return (-1);
		errno = sverrno;
		return (lvalue);

case _SC_ASYNCHRONOUS_IO:
#if _POSIX_ASYNCHRONOUS_IO == 0
		mib[0] = CTL_P1003_1B;
		mib[1] = CTL_P1003_1B_ASYNCHRONOUS_IO;
		break;
#else
		return (_POSIX_ASYNCHRONOUS_IO);
#endif
	case _SC_MAPPED_FILES:
		return (_POSIX_MAPPED_FILES);
	case _SC_MEMLOCK:
		return (_POSIX_MEMLOCK);
	case _SC_MEMLOCK_RANGE:
		return (_POSIX_MEMLOCK_RANGE);
	case _SC_MEMORY_PROTECTION:
		return (_POSIX_MEMORY_PROTECTION);
	case _SC_MESSAGE_PASSING:
#if _POSIX_MESSAGE_PASSING == 0
		mib[0] = CTL_P1003_1B;
		mib[1] = CTL_P1003_1B_MESSAGE_PASSING;
		goto yesno;
#else
		return (_POSIX_MESSAGE_PASSING);
#endif
	case _SC_PRIORITIZED_IO:
#if _POSIX_PRIORITIZED_IO == 0
		mib[0] = CTL_P1003_1B;
		mib[1] = CTL_P1003_1B_PRIORITIZED_IO;
		goto yesno;
#else
		return (_POSIX_PRIORITIZED_IO);
#endif
	case _SC_PRIORITY_SCHEDULING:
#if _POSIX_PRIORITY_SCHEDULING == 0
		mib[0] = CTL_P1003_1B;
		mib[1] = CTL_P1003_1B_PRIORITY_SCHEDULING;
		goto yesno;
#else
		return (_POSIX_PRIORITY_SCHEDULING);
#endif
	case _SC_REALTIME_SIGNALS:
#if _POSIX_REALTIME_SIGNALS == 0
		mib[0] = CTL_P1003_1B;
		mib[1] = CTL_P1003_1B_REALTIME_SIGNALS;
		goto yesno;
#else
		return (_POSIX_REALTIME_SIGNALS);
#endif
	case _SC_SEMAPHORES:
#if _POSIX_SEMAPHORES == 0
		mib[0] = CTL_P1003_1B;
		mib[1] = CTL_P1003_1B_SEMAPHORES;
		goto yesno;
#else
		return (_POSIX_SEMAPHORES);
#endif
	case _SC_FSYNC:
		return (_POSIX_FSYNC);

case _SC_SHARED_MEMORY_OBJECTS:
		return (_POSIX_SHARED_MEMORY_OBJECTS);
	case _SC_SYNCHRONIZED_IO:
#if _POSIX_SYNCHRONIZED_IO == 0
		mib[0] = CTL_P1003_1B;
		mib[1] = CTL_P1003_1B_SYNCHRONIZED_IO;
		goto yesno;
#else
		return (_POSIX_SYNCHRONIZED_IO);
#endif
	case _SC_TIMERS:
#if _POSIX_TIMERS == 0
		mib[0] = CTL_P1003_1B;
		mib[1] = CTL_P1003_1B_TIMERS;
		goto yesno;
#else
		return (_POSIX_TIMERS);
#endif
	case _SC_AIO_LISTIO_MAX:
		mib[0] = CTL_P1003_1B;
		mib[1] = CTL_P1003_1B_AIO_LISTIO_MAX;
		break;
	case _SC_AIO_MAX:
		mib[0] = CTL_P1003_1B;
		mib[1] = CTL_P1003_1B_AIO_MAX;
		break;
	case _SC_AIO_PRIO_DELTA_MAX:
		mib[0] = CTL_P1003_1B;
		mib[1] = CTL_P1003_1B_AIO_PRIO_DELTA_MAX;
		break;
	case _SC_DELAYTIMER_MAX:
		mib[0] = CTL_P1003_1B;
		mib[1] = CTL_P1003_1B_DELAYTIMER_MAX;
		goto yesno;
	case _SC_MQ_OPEN_MAX:
		mib[0] = CTL_P1003_1B;
		mib[1] = CTL_P1003_1B_MQ_OPEN_MAX;
		goto yesno;
	case _SC_PAGESIZE:
		return (getpagesize());
	case _SC_RTSIG_MAX:
		mib[0] = CTL_P1003_1B;
		mib[1] = CTL_P1003_1B_RTSIG_MAX;
		goto yesno;
	case _SC_SEM_NSEMS_MAX:
		return (-1);
	case _SC_SEM_VALUE_MAX:
		return (SEM_VALUE_MAX);
	case _SC_SIGQUEUE_MAX:
		mib[0] = CTL_P1003_1B;
		mib[1] = CTL_P1003_1B_SIGQUEUE_MAX;
		goto yesno;
	case _SC_TIMER_MAX:
		mib[0] = CTL_P1003_1B;
		mib[1] = CTL_P1003_1B_TIMER_MAX;
yesno:
		len = sizeof(value);
		if (sysctl(mib, 2, &value, &len, NULL, 0) == -1)
			return (-1);
		if (value == 0)
			return (defaultresult);
		return ((long)value);

case _SC_2_PBS:
	case _SC_2_PBS_ACCOUNTING:
	case _SC_2_PBS_CHECKPOINT:
	case _SC_2_PBS_LOCATE:
	case _SC_2_PBS_MESSAGE:
	case _SC_2_PBS_TRACK:
#if _POSIX2_PBS == 0
#error "don't know how to determine _SC_2_PBS"
		/*
		 * This probably requires digging through the filesystem
		 * to see if the appropriate package has been installed.
		 * Since we don't currently support this option at all,
		 * it's not worth the effort to write the code now.
		 * Figuring out which of the sub-options are supported
		 * would be even more difficult, so it's probably easier
		 * to always say ``no''.
		 */
#else
		return (_POSIX2_PBS);
#endif
	case _SC_ADVISORY_INFO:
#if _POSIX_ADVISORY_INFO == 0
#error "_POSIX_ADVISORY_INFO"
#else
		return (_POSIX_ADVISORY_INFO);
#endif
	case _SC_BARRIERS:
#if _POSIX_BARRIERS == 0
#error "_POSIX_BARRIERS"
#else
		return (_POSIX_BARRIERS);
#endif
	case _SC_CLOCK_SELECTION:
#if _POSIX_CLOCK_SELECTION == 0
#error "_POSIX_CLOCK_SELECTION"
#else
		return (_POSIX_CLOCK_SELECTION);
#endif
	case _SC_CPUTIME:
		return (_POSIX_CPUTIME);
#ifdef notdef
	case _SC_FILE_LOCKING:
		/*
		 * XXX - The standard doesn't tell us how to define
		 * _POSIX_FILE_LOCKING, so we can't answer this one.
		 */
#endif

/*
	 * SUSv4tc1 says the following about _SC_GETGR_R_SIZE_MAX and
	 * _SC_GETPW_R_SIZE_MAX:
	 * Note that sysconf(_SC_GETGR_R_SIZE_MAX) may return -1 if
	 * there is no hard limit on the size of the buffer needed to
	 * store all the groups returned.
	 */
	case _SC_GETGR_R_SIZE_MAX:
	case _SC_GETPW_R_SIZE_MAX:
		return (-1);
	case _SC_HOST_NAME_MAX:
		return (MAXHOSTNAMELEN - 1); /* does not include \0 */
	case _SC_LOGIN_NAME_MAX:
		return (MAXLOGNAME);
	case _SC_MONOTONIC_CLOCK:
#if _POSIX_MONOTONIC_CLOCK == 0
#error "_POSIX_MONOTONIC_CLOCK"
#else
		return (_POSIX_MONOTONIC_CLOCK);
#endif
#if _POSIX_MESSAGE_PASSING > -1
	case _SC_MQ_PRIO_MAX:
		return (MQ_PRIO_MAX);
#endif
	case _SC_READER_WRITER_LOCKS:
		return (_POSIX_READER_WRITER_LOCKS);
	case _SC_REGEXP:
		return (_POSIX_REGEXP);
	case _SC_SHELL:
		return (_POSIX_SHELL);
	case _SC_SPAWN:
		return (_POSIX_SPAWN);
	case _SC_SPIN_LOCKS:
		return (_POSIX_SPIN_LOCKS);
	case _SC_SPORADIC_SERVER:
#if _POSIX_SPORADIC_SERVER == 0
#error "_POSIX_SPORADIC_SERVER"
#else
		return (_POSIX_SPORADIC_SERVER);
#endif
	case _SC_THREAD_ATTR_STACKADDR:
		return (_POSIX_THREAD_ATTR_STACKADDR);
	case _SC_THREAD_ATTR_STACKSIZE:
		return (_POSIX_THREAD_ATTR_STACKSIZE);
	case _SC_THREAD_CPUTIME:
		return (_POSIX_THREAD_CPUTIME);
	case _SC_THREAD_DESTRUCTOR_ITERATIONS:
		return (PTHREAD_DESTRUCTOR_ITERATIONS);
	case _SC_THREAD_KEYS_MAX:
		return (PTHREAD_KEYS_MAX);
	case _SC_THREAD_PRIO_INHERIT:
		return (_POSIX_THREAD_PRIO_INHERIT);
	case _SC_THREAD_PRIO_PROTECT:
		return (_POSIX_THREAD_PRIO_PROTECT);
	case _SC_THREAD_PRIORITY_SCHEDULING:
		return (_POSIX_THREAD_PRIORITY_SCHEDULING);
	case _SC_THREAD_PROCESS_SHARED:
		return (_POSIX_THREAD_PROCESS_SHARED);
	case _SC_THREAD_SAFE_FUNCTIONS:
		return (_POSIX_THREAD_SAFE_FUNCTIONS);
	case _SC_THREAD_STACK_MIN:
		return (PTHREAD_STACK_MIN);
	case _SC_THREAD_THREADS_MAX:
		return (PTHREAD_THREADS_MAX); /* XXX wrong type! */
	case _SC_TIMEOUTS:
		return (_POSIX_TIMEOUTS);
	case _SC_THREADS:
		return (_POSIX_THREADS);
	case _SC_TRACE:
#if _POSIX_TRACE == 0
#error "_POSIX_TRACE"
		/* While you're implementing this, also do the ones below. */
#else
		return (_POSIX_TRACE);
#endif
#if _POSIX_TRACE > -1
	case _SC_TRACE_EVENT_FILTER:
		return (_POSIX_TRACE_EVENT_FILTER);
	case _SC_TRACE_INHERIT:
		return (_POSIX_TRACE_INHERIT);
	case _SC_TRACE_LOG:
		return (_POSIX_TRACE_LOG);
#endif
	case _SC_TTY_NAME_MAX:
		path = _PATH_DEV;
		goto do_NAME_MAX;
	case _SC_TYPED_MEMORY_OBJECTS:
#if _POSIX_TYPED_MEMORY_OBJECTS == 0
#error "_POSIX_TYPED_MEMORY_OBJECTS"
#else
		return (_POSIX_TYPED_MEMORY_OBJECTS);
#endif
	case _SC_V6_ILP32_OFF32:
#if _V6_ILP32_OFF32 == 0
		if (sizeof(int) * CHAR_BIT == 32 &&
		    sizeof(int) == sizeof(long) &&
		    sizeof(long) == sizeof(void *) &&
		    sizeof(void *) == sizeof(off_t))
			return 1;
		else
			return -1;
#else
		return (_V6_ILP32_OFF32);
#endif
	case _SC_V6_ILP32_OFFBIG:
#if _V6_ILP32_OFFBIG == 0
		if (sizeof(int) * CHAR_BIT == 32 &&
		    sizeof(int) == sizeof(long) &&
		    sizeof(long) == sizeof(void *) &&
		    sizeof(off_t) * CHAR_BIT >= 64)
			return 1;
		else
			return -1;
#else
		return (_V6_ILP32_OFFBIG);
#endif
	case _SC_V6_LP64_OFF64:
#if _V6_LP64_OFF64 == 0
		if (sizeof(int) * CHAR_BIT == 32 &&
		    sizeof(long) * CHAR_BIT == 64 &&
		    sizeof(long) == sizeof(void *) &&
		    sizeof(void *) == sizeof(off_t))
			return 1;
		else
			return -1;
#else
		return (_V6_LP64_OFF64);
#endif
	case _SC_V6_LPBIG_OFFBIG:
#if _V6_LPBIG_OFFBIG == 0
		if (sizeof(int) * CHAR_BIT >= 32 &&
		    sizeof(long) * CHAR_BIT >= 64 &&
		    sizeof(void *) * CHAR_BIT >= 64 &&
		    sizeof(off_t) * CHAR_BIT >= 64)
			return 1;
		else
			return -1;
#else
		return (_V6_LPBIG_OFFBIG);
#endif
	case _SC_ATEXIT_MAX:
		return (ATEXIT_SIZE);
	case _SC_IOV_MAX:
		mib[0] = CTL_KERN;
		mib[1] = KERN_IOV_MAX;
		break;
	case _SC_XOPEN_CRYPT:
		return (_XOPEN_CRYPT);
	case _SC_XOPEN_ENH_I18N:
		return (_XOPEN_ENH_I18N);
	case _SC_XOPEN_LEGACY:
		return (_XOPEN_LEGACY);
	case _SC_XOPEN_REALTIME:
#if _XOPEN_REALTIME == 0
		sverrno = errno;
		value = sysconf(_SC_ASYNCHRONOUS_IO) > 0 &&
			sysconf(_SC_MEMLOCK) > 0 &&
			sysconf(_SC_MEMLOCK_RANGE) > 0 &&
			sysconf(_SC_MESSAGE_PASSING) > 0 &&
			sysconf(_SC_PRIORITY_SCHEDULING) > 0 &&
			sysconf(_SC_REALTIME_SIGNALS) > 0 &&
			sysconf(_SC_SEMAPHORES) > 0 &&
			sysconf(_SC_SHARED_MEMORY_OBJECTS) > 0 &&
			sysconf(_SC_SYNCHRONIZED_IO) > 0 &&
			sysconf(_SC_TIMERS) > 0;
		errno = sverrno;
		if (value)
			return (200112L);
		else
			return (-1);
#else
		return (_XOPEN_REALTIME);
#endif
	case _SC_XOPEN_REALTIME_THREADS:
#if _XOPEN_REALTIME_THREADS == 0
#error "_XOPEN_REALTIME_THREADS"
#else
		return (_XOPEN_REALTIME_THREADS);
#endif
	case _SC_XOPEN_SHM:
		len = sizeof(lvalue);
		sverrno = errno;
		if (sysctlbyname("kern.ipc.shmmin", &lvalue, &len, NULL,
		    0) == -1) {
			errno = sverrno;
			return (-1);
		}
		errno = sverrno;
		return (1);
	case _SC_XOPEN_STREAMS:
		return (_XOPEN_STREAMS);
	case _SC_XOPEN_UNIX:
		return (_XOPEN_UNIX);
#ifdef _XOPEN_VERSION
	case _SC_XOPEN_VERSION:
		return (_XOPEN_VERSION);
#endif
#ifdef _XOPEN_XCU_VERSION
	case _SC_XOPEN_XCU_VERSION:
		return (_XOPEN_XCU_VERSION);
#endif
	case _SC_SYMLOOP_MAX:
		return (MAXSYMLINKS);
	case _SC_RAW_SOCKETS:
		return (_POSIX_RAW_SOCKETS);
	case _SC_IPV6:
#if _POSIX_IPV6 == 0
		sverrno = errno;
		value = _socket(PF_INET6, SOCK_DGRAM, 0);
		errno = sverrno;
		if (value >= 0) {
			_close(value);
			return (200112L);
		} else
			return (0);
#else
		return (_POSIX_IPV6);
#endif

case _SC_NPROCESSORS_CONF:
	case _SC_NPROCESSORS_ONLN:
		if (_elf_aux_info(AT_NCPUS, &value, sizeof(value)) == 0)
			return ((long)value);
		mib[0] = CTL_HW;
		mib[1] = HW_NCPU;
		break;

#ifdef _SC_PHYS_PAGES
	case _SC_PHYS_PAGES:
		len = sizeof(lvalue);
		if (sysctlbyname("hw.availpages", &lvalue, &len, NULL, 0) == -1)
			return (-1);
		return (lvalue);
#endif

#ifdef _SC_CPUSET_SIZE
	case _SC_CPUSET_SIZE:
		len = sizeof(value);
		if (sysctlbyname("kern.sched.cpusetsize", &value, &len, NULL,
		    0) == -1)
			return (-1);
		return ((long)value);
#endif

default:
		errno = EINVAL;
		return (-1);
	}
	len = sizeof(value);
	if (sysctl(mib, 2, &value, &len, NULL, 0) == -1)
		value = -1;
	return ((long)value);
}

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