diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/sysconf.c')
| -rw-r--r-- | sysdeps/unix/sysv/linux/sysconf.c | 294 |
1 files changed, 14 insertions, 280 deletions
diff --git a/sysdeps/unix/sysv/linux/sysconf.c b/sysdeps/unix/sysv/linux/sysconf.c index d658165b07..2ae584f164 100644 --- a/sysdeps/unix/sysv/linux/sysconf.c +++ b/sysdeps/unix/sysv/linux/sysconf.c @@ -1,5 +1,4 @@ -/* Copyright (C) 1991, 1993, 1995, 1996 Free Software Foundation, Inc. -This file is part of the GNU C Library. +/* Copyright (C) 1995, 1996 Free Software Foundation, Inc. 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 @@ -13,291 +12,26 @@ 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. */ +not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, +Boston, MA 02111-1307, USA. */ + +/* On Linux we must not ask __getdtablesize for te value for _SC_OPEN_MAX + because this would mean an endless loop. */ -#include <ansidecl.h> -#include <errno.h> #include <limits.h> #include <unistd.h> -#include <stddef.h> -#include <stdio.h> -#include <time.h> -extern size_t EXFUN(__getpagesize, (NOARGS)); +extern long int __default_sysconf (int name); -/* Get the value of the system variable NAME. */ long int -DEFUN(__sysconf, (name), int name) +__sysconf (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 OPEN_MAX; - - 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 + if (name == _SC_OPEN_MAX) + return OPEN_MAX; - 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_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_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 - } + return __default_sysconf (name); } -weak_alias (__sysconf, sysconf) +#define __sysconf __default_sysconf + +#include <sysdeps/posix/sysconf.c> |