diff options
Diffstat (limited to 'lib/libc/gen/sysconf.c')
| -rw-r--r-- | lib/libc/gen/sysconf.c | 299 |
1 files changed, 0 insertions, 299 deletions
diff --git a/lib/libc/gen/sysconf.c b/lib/libc/gen/sysconf.c deleted file mode 100644 index 2298bb1..0000000 --- a/lib/libc/gen/sysconf.c +++ /dev/null @@ -1,299 +0,0 @@ -/*- - * 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. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. 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. - */ - -#if defined(LIBC_SCCS) && !defined(lint) -static char sccsid[] = "@(#)sysconf.c 8.2 (Berkeley) 3/20/94"; -#endif /* LIBC_SCCS and not lint */ - -#include <sys/_posix.h> -#include <sys/param.h> -#include <sys/time.h> -#include <sys/sysctl.h> -#include <sys/resource.h> - -#include <errno.h> -#include <time.h> -#include <unistd.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(name) - int name; -{ - struct rlimit rl; - size_t len; - int mib[2], value; - long defaultresult; - - len = sizeof(value); - defaultresult = -1; - - switch (name) { -/* 1003.1 */ - case _SC_ARG_MAX: - mib[0] = CTL_KERN; - mib[1] = KERN_ARGMAX; - break; - case _SC_CHILD_MAX: - return (getrlimit(RLIMIT_NPROC, &rl) ? -1 : rl.rlim_cur); - case _SC_CLK_TCK: - return (CLK_TCK); - case _SC_JOB_CONTROL: - mib[0] = CTL_KERN; - mib[1] = KERN_JOB_CONTROL; - goto yesno; - case _SC_NGROUPS_MAX: - mib[0] = CTL_KERN; - mib[1] = KERN_NGROUPS; - break; - case _SC_OPEN_MAX: - return (getrlimit(RLIMIT_NOFILE, &rl) ? -1 : rl.rlim_cur); - case _SC_STREAM_MAX: - mib[0] = CTL_USER; - mib[1] = USER_STREAM_MAX; - break; - case _SC_TZNAME_MAX: - mib[0] = CTL_USER; - mib[1] = USER_TZNAME_MAX; - break; - case _SC_SAVED_IDS: - mib[0] = CTL_KERN; - mib[1] = KERN_SAVED_IDS; - goto yesno; - case _SC_VERSION: - mib[0] = CTL_KERN; - mib[1] = KERN_POSIX1; - break; - -/* 1003.2 */ - case _SC_BC_BASE_MAX: - mib[0] = CTL_USER; - mib[1] = USER_BC_BASE_MAX; - break; - case _SC_BC_DIM_MAX: - mib[0] = CTL_USER; - mib[1] = USER_BC_DIM_MAX; - break; - case _SC_BC_SCALE_MAX: - mib[0] = CTL_USER; - mib[1] = USER_BC_SCALE_MAX; - break; - case _SC_BC_STRING_MAX: - mib[0] = CTL_USER; - mib[1] = USER_BC_STRING_MAX; - break; - case _SC_COLL_WEIGHTS_MAX: - mib[0] = CTL_USER; - mib[1] = USER_COLL_WEIGHTS_MAX; - break; - case _SC_EXPR_NEST_MAX: - mib[0] = CTL_USER; - mib[1] = USER_EXPR_NEST_MAX; - break; - case _SC_LINE_MAX: - mib[0] = CTL_USER; - mib[1] = USER_LINE_MAX; - break; - case _SC_RE_DUP_MAX: - mib[0] = CTL_USER; - mib[1] = USER_RE_DUP_MAX; - break; - case _SC_2_VERSION: - mib[0] = CTL_USER; - mib[1] = USER_POSIX2_VERSION; - break; - case _SC_2_C_BIND: - mib[0] = CTL_USER; - mib[1] = USER_POSIX2_C_BIND; - goto yesno; - case _SC_2_C_DEV: - mib[0] = CTL_USER; - mib[1] = USER_POSIX2_C_DEV; - goto yesno; - case _SC_2_CHAR_TERM: - mib[0] = CTL_USER; - mib[1] = USER_POSIX2_CHAR_TERM; - goto yesno; - case _SC_2_FORT_DEV: - mib[0] = CTL_USER; - mib[1] = USER_POSIX2_FORT_DEV; - goto yesno; - case _SC_2_FORT_RUN: - mib[0] = CTL_USER; - mib[1] = USER_POSIX2_FORT_RUN; - goto yesno; - case _SC_2_LOCALEDEF: - mib[0] = CTL_USER; - mib[1] = USER_POSIX2_LOCALEDEF; - goto yesno; - case _SC_2_SW_DEV: - mib[0] = CTL_USER; - mib[1] = USER_POSIX2_SW_DEV; - goto yesno; - case _SC_2_UPE: - mib[0] = CTL_USER; - mib[1] = USER_POSIX2_UPE; - goto yesno; - -#ifdef _P1003_1B_VISIBLE - /* POSIX.1B */ - - case _SC_ASYNCHRONOUS_IO: - mib[0] = CTL_P1003_1B; - mib[1] = CTL_P1003_1B_ASYNCHRONOUS_IO; - goto yesno; - case _SC_MAPPED_FILES: - mib[0] = CTL_P1003_1B; - mib[1] = CTL_P1003_1B_MAPPED_FILES; - goto yesno; - case _SC_MEMLOCK: - mib[0] = CTL_P1003_1B; - mib[1] = CTL_P1003_1B_MEMLOCK; - goto yesno; - case _SC_MEMLOCK_RANGE: - mib[0] = CTL_P1003_1B; - mib[1] = CTL_P1003_1B_MEMLOCK_RANGE; - goto yesno; - case _SC_MEMORY_PROTECTION: - mib[0] = CTL_P1003_1B; - mib[1] = CTL_P1003_1B_MEMORY_PROTECTION; - goto yesno; - case _SC_MESSAGE_PASSING: - mib[0] = CTL_P1003_1B; - mib[1] = CTL_P1003_1B_MESSAGE_PASSING; - goto yesno; - case _SC_PRIORITIZED_IO: - mib[0] = CTL_P1003_1B; - mib[1] = CTL_P1003_1B_PRIORITIZED_IO; - goto yesno; - case _SC_PRIORITY_SCHEDULING: - mib[0] = CTL_P1003_1B; - mib[1] = CTL_P1003_1B_PRIORITY_SCHEDULING; - goto yesno; - case _SC_REALTIME_SIGNALS: - mib[0] = CTL_P1003_1B; - mib[1] = CTL_P1003_1B_REALTIME_SIGNALS; - goto yesno; - case _SC_SEMAPHORES: - mib[0] = CTL_P1003_1B; - mib[1] = CTL_P1003_1B_SEMAPHORES; - goto yesno; - case _SC_FSYNC: - mib[0] = CTL_P1003_1B; - mib[1] = CTL_P1003_1B_FSYNC; - goto yesno; - case _SC_SHARED_MEMORY_OBJECTS: - mib[0] = CTL_P1003_1B; - mib[1] = CTL_P1003_1B_SHARED_MEMORY_OBJECTS; - goto yesno; - case _SC_SYNCHRONIZED_IO: - mib[0] = CTL_P1003_1B; - mib[1] = CTL_P1003_1B_SYNCHRONIZED_IO; - goto yesno; - case _SC_TIMERS: - mib[0] = CTL_P1003_1B; - mib[1] = CTL_P1003_1B_TIMERS; - goto yesno; - case _SC_AIO_LISTIO_MAX: - mib[0] = CTL_P1003_1B; - mib[1] = CTL_P1003_1B_AIO_LISTIO_MAX; - goto yesno; - case _SC_AIO_MAX: - mib[0] = CTL_P1003_1B; - mib[1] = CTL_P1003_1B_AIO_MAX; - goto yesno; - case _SC_AIO_PRIO_DELTA_MAX: - mib[0] = CTL_P1003_1B; - mib[1] = CTL_P1003_1B_AIO_PRIO_DELTA_MAX; - goto yesno; - 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: - defaultresult = getpagesize(); - mib[0] = CTL_P1003_1B; - mib[1] = CTL_P1003_1B_PAGESIZE; - goto yesno; - case _SC_RTSIG_MAX: - mib[0] = CTL_P1003_1B; - mib[1] = CTL_P1003_1B_RTSIG_MAX; - goto yesno; - case _SC_SEM_NSEMS_MAX: - mib[0] = CTL_P1003_1B; - mib[1] = CTL_P1003_1B_SEM_NSEMS_MAX; - goto yesno; - case _SC_SEM_VALUE_MAX: - mib[0] = CTL_P1003_1B; - mib[1] = CTL_P1003_1B_SEM_VALUE_MAX; - goto yesno; - 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; - goto yesno; -#endif /* _P1003_1B_VISIBLE */ - -yesno: if (sysctl(mib, 2, &value, &len, NULL, 0) == -1) - return (-1); - if (value == 0) - return (defaultresult); - return (value); - break; - default: - errno = EINVAL; - return (-1); - } - return (sysctl(mib, 2, &value, &len, NULL, 0) == -1 ? -1 : value); -} |
