1  /* Get file-specific information about a file.  Linux version.
       2     Copyright (C) 2003-2023 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, see
      17     <https://www.gnu.org/licenses/>.  */
      18  
      19  #include <assert.h>
      20  #include <stdbool.h>
      21  #include <stdlib.h>
      22  #include <unistd.h>
      23  
      24  
      25  static long int linux_sysconf (int name);
      26  extern long int __cache_sysconf (int) attribute_hidden;
      27  
      28  
      29  /* Get the value of the system variable NAME.  */
      30  long int
      31  __sysconf (int name)
      32  {
      33    if (name >= _SC_LEVEL1_ICACHE_SIZE && name <= _SC_LEVEL4_CACHE_LINESIZE)
      34      return __cache_sysconf (name);
      35  
      36    return linux_sysconf (name);
      37  }
      38  
      39  /* Now the generic Linux version.  */
      40  #undef __sysconf
      41  #define __sysconf static linux_sysconf
      42  #include "../sysconf.c"