/* Copyright (C) 1991, 1993, 1995, 1996 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with the GNU C Library; see the file COPYING.LIB. If not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include #include #include #include #include #include #include extern int EXFUN(__getdtablesize, (NOARGS)); extern size_t EXFUN(__getpagesize, (NOARGS)); /* Get the value of the system variable NAME. */ long int DEFUN(__sysconf, (name), int name) { switch (name) { default: errno = EINVAL; return -1; case _SC_ARG_MAX: #ifdef ARG_MAX return ARG_MAX; #else return -1; #endif case _SC_CHILD_MAX: #ifdef CHILD_MAX return CHILD_MAX; #else return -1; #endif case _SC_CLK_TCK: #ifdef CLK_TCK return CLK_TCK; #else return 60; #endif case _SC_NGROUPS_MAX: #ifdef NGROUPS_MAX return NGROUPS_MAX; #else return -1; #endif case _SC_OPEN_MAX: return __getdtablesize (); case _SC_STREAM_MAX: #ifdef STREAM_MAX return STREAM_MAX; #else return FOPEN_MAX; #endif case _SC_TZNAME_MAX: return __tzname_max (); case _SC_JOB_CONTROL: #ifdef _POSIX_JOB_CONTROL return 1; #else return -1; #endif case _SC_SAVED_IDS: #ifdef _POSIX_SAVED_IDS return 1; #else return -1; #endif case _SC_REALTIME_SIGNALS: #ifdef _POSIX_REALTIME_SIGNALS return 1; #else return -1; #endif case _SC_PRIORITY_SCHEDULING: #ifdef _POSIX_PRIORITY_SCHEDULING return 1; #else return -1; #endif case _SC_TIMERS: #ifdef _POSIX_TIMERS return 1; #else return -1; #endif case _SC_ASYNCHRONOUS_IO: #ifdef _POSIX_ASYNCHRONOUS_IO return 1; #else return -1; #endif case _SC_PRIORITIZED_IO: #ifdef _POSIX_PRIORITIZED_IO return 1; #else return -1; #endif case _SC_SYNCHRONIZED_IO: #ifdef _POSIX_SYNCHRONIZED_IO return 1; #else return -1; #endif case _SC_FSYNC: #ifdef _POSIX_FSYNC return 1; #else return -1; #endif case _SC_MAPPED_FILES: #ifdef _POSIX_MAPPED_FILES return 1; #else return -1; #endif case _SC_MEMLOCK: #ifdef _POSIX_MEMLOCK return 1; #else return -1; #endif case _SC_MEMLOCK_RANGE: #ifdef _POSIX_MEMLOCK_RANGE return 1; #else return -1; #endif case _SC_MEMORY_PROTECTION: #ifdef _POSIX_MEMORY_PROTECTION return 1; #else return -1; #endif case _SC_MESSAGE_PASSING: #ifdef _POSIX_MESSAGE_PASSING return 1; #else return -1; #endif case _SC_SEMAPHORES: #ifdef _POSIX_SEMAPHORES return 1; #else return -1; #endif case _SC_SHARED_MEMORY_OBJECTS: #ifdef _POSIX_SHARED_MEMORY_OBJECTS return 1; #else return -1; #endif case _SC_VERSION: return _POSIX_VERSION; case _SC_PAGESIZE: return __getpagesize (); case _SC_AIO_LISTIO_MAX: #ifdef AIO_LISTIO_MAX return AIO_LISTIO_MAX; #else return -1; #endif case _SC_AIO_MAX: #ifdef AIO_MAX return AIO_MAX; #else return -1; #endif case _SC_AIO_PRIO_DELTA_MAX: #ifdef AIO_PRIO_DELTA_MAX return AIO_PRIO_DELTA_MAX; #else return -1; #endif case _SC_DELAYTIMER_MAX: #ifdef DELAYTIMER_MAX return DELAYTIMER_MAX; #else return -1; #endif case _SC_MQ_OPEN_MAX: #ifdef MQ_OPEN_MAX return MQ_OPEN_MAX; #else return -1; #endif case _SC_MQ_PRIO_MAX: #ifdef MQ_PRIO_MAX return MQ_PRIO_MAX; #else return -1; #endif case _SC_RTSIG_MAX: #ifdef RTSIG_MAX return RTSIG_MAX; #else return -1; #endif case _SC_SEM_NSEMS_MAX: #ifdef SEM_NSEMS_MAX return SEM_NSEMS_MAX; #else return -1; #endif case _SC_SEM_VALUE_MAX: #ifdef SEM_VALUE_MAX return SEM_VALUE_MAX; #else return -1; #endif case _SC_SIGQUEUE_MAX: #ifdef SIGQUEUE_MAX return SIGQUEUE_MAX; #else return -1; #endif case _SC_TIMER_MAX: #ifdef TIMER_MAX return TIMER_MAX; #else return -1; #endif case _SC_BC_BASE_MAX: #ifdef BC_BASE_MAX return BC_BASE_MAX; #else return -1; #endif case _SC_BC_DIM_MAX: #ifdef BC_DIM_MAX return BC_DIM_MAX; #else return -1; #endif case _SC_BC_SCALE_MAX: #ifdef BC_SCALE_MAX return BC_SCALE_MAX; #else return -1; #endif case _SC_BC_STRING_MAX: #ifdef BC_STRING_MAX return BC_STRING_MAX; #else return -1; #endif case _SC_EQUIV_CLASS_MAX: #ifdef EQUIV_CLASS_MAX return EQUIV_CLASS_MAX; #else return -1; #endif case _SC_EXPR_NEST_MAX: #ifdef EXPR_NEST_MAX return EXPR_NEST_MAX; #else return -1; #endif case _SC_LINE_MAX: #ifdef LINE_MAX return LINE_MAX; #else return -1; #endif case _SC_RE_DUP_MAX: #ifdef RE_DUP_MAX return RE_DUP_MAX; #else return -1; #endif case _SC_CHARCLASS_NAME_MAX: #ifdef CHARCLASS_NAME_MAX return CHARCLASS_NAME_MAX; #else return -1; #endif case _SC_PII: #ifdef _POSIX_PII return 1; #else return -1; #endif case _SC_PII_XTI: #ifdef _POSIX_PII_XTI return 1; #else return -1; #endif case _SC_PII_SOCKET: #ifdef _POSIX_PII_SOCKET return 1; #else return -1; #endif case _SC_PII_INTERNET: #ifdef _POSIX_PII_INTERNET return 1; #else return -1; #endif case _SC_PII_OSI: #ifdef _POSIX_PII_OSI return 1; #else return -1; #endif case _SC_POLL: #ifdef _POSIX_POLL return 1; #else return -1; #endif case _SC_SELECT: #ifdef _POSIX_SELECT return 1; #else return -1; #endif case _SC_UIO_MAXIOV: #ifdef UIO_MAXIOV return UIO_MAXIOV; #else return -1; #endif case _SC_PII_INTERNET_STREAM: #ifdef _POSIX_PII_INTERNET_STREAM return 1; #else return -1; #endif case _SC_PII_INTERNET_DGRAM: #ifdef _POSIX_PII_INTERNET_DGRAM return 1; #else return -1; #endif case _SC_PII_OSI_COTS: #ifdef _POSIX_PII_OSI_COTS return 1; #else return -1; #endif case _SC_PII_OSI_CLTS: #ifdef _POSIX_PII_OSI_CLTS return 1; #else return -1; #endif case _SC_PII_OSI_M: #ifdef _POSIX_PII_OSI_M return 1; #else return -1; #endif case _SC_T_IOV_MAX: #ifdef _T_IOV_MAX return _T_IOV_MAX; #else return -1; #endif case _SC_2_VERSION: /* This is actually supposed to return the version of the 1003.2 utilities on the system {POSIX2_VERSION}. */ return _POSIX2_C_VERSION; case _SC_2_C_BIND: #ifdef _POSIX2_C_BIND return _POSIX2_C_BIND; #else return -1; #endif case _SC_2_C_DEV: #ifdef _POSIX2_C_DEV return _POSIX2_C_DEV; #else return -1; #endif case _SC_2_FORT_DEV: #ifdef _POSIX2_FORT_DEV return _POSIX2_FORT_DEV; #else return -1; #endif case _SC_2_LOCALEDEF: #ifdef _POSIX2_LOCALEDEF return _POSIX2_LOCALEDEF; #else return -1; #endif case _SC_2_SW_DEV: #ifdef _POSIX2_SW_DEV return _POSIX2_SW_DEV; #else return -1; #endif } } weak_alias (__sysconf, sysconf)