diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/sysconf.c')
| -rw-r--r-- | sysdeps/unix/sysv/linux/sysconf.c | 198 |
1 files changed, 197 insertions, 1 deletions
diff --git a/sysdeps/unix/sysv/linux/sysconf.c b/sysdeps/unix/sysv/linux/sysconf.c index e366d04a8b..447cfd46ae 100644 --- a/sysdeps/unix/sysv/linux/sysconf.c +++ b/sysdeps/unix/sysv/linux/sysconf.c @@ -1 +1,197 @@ -#include <sysdeps/posix/sysconf.c> +/* Copyright (C) 1991, 1993, 1995 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 <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)); + +/* 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 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_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_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) |