sysdeps/unix/sysv/linux/x86_64/sysconf.c

   1 /* Get file-specific information about a file.  Linux version.
   2    Copyright (C) 2003, 2004, 2006, 2007 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 #include <assert.h>
  21 #include <stdbool.h>
  22 #include <stdlib.h>
  23 #include <unistd.h>
  24
  25
  26 static long int linux_sysconf (int name);
  27 extern long int __cache_sysconf (int) attribute_hidden;
  28
  29
  30 /* Get the value of the system variable NAME.  */
  31 long int
  32 __sysconf (int name)
  33 {
  34   if (name >= _SC_LEVEL1_ICACHE_SIZE && name <= _SC_LEVEL4_CACHE_LINESIZE)
  35     return __cache_sysconf (name);
  36
  37   return linux_sysconf (name);
  38 }
  39
  40 /* Now the generic Linux version.  */
  41 #undef __sysconf
  42 #define __sysconf static linux_sysconf
  43 #include "../sysconf.c"