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glibc  2.9
sysconf.c
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00001 /* Get file-specific information about a file.  Linux version.
00002    Copyright (C) 2003, 2004, 2006, 2007 Free Software Foundation, Inc.
00003    This file is part of the GNU C Library.
00004 
00005    The GNU C Library is free software; you can redistribute it and/or
00006    modify it under the terms of the GNU Lesser General Public
00007    License as published by the Free Software Foundation; either
00008    version 2.1 of the License, or (at your option) any later version.
00009 
00010    The GNU C Library is distributed in the hope that it will be useful,
00011    but WITHOUT ANY WARRANTY; without even the implied warranty of
00012    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013    Lesser General Public License for more details.
00014 
00015    You should have received a copy of the GNU Lesser General Public
00016    License along with the GNU C Library; if not, write to the Free
00017    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00018    02111-1307 USA.  */
00019 
00020 #include <assert.h>
00021 #include <stdbool.h>
00022 #include <stdlib.h>
00023 #include <unistd.h>
00024 
00025 
00026 static long int linux_sysconf (int name);
00027 extern long int __cache_sysconf (int) attribute_hidden;
00028 
00029 
00030 /* Get the value of the system variable NAME.  */
00031 long int
00032 __sysconf (int name)
00033 {
00034   if (name >= _SC_LEVEL1_ICACHE_SIZE && name <= _SC_LEVEL4_CACHE_LINESIZE)
00035     return __cache_sysconf (name);
00036 
00037   return linux_sysconf (name);
00038 }
00039 
00040 /* Now the generic Linux version.  */
00041 #undef __sysconf
00042 #define __sysconf static linux_sysconf
00043 #include "../sysconf.c"