1  /* Copyright (C) 2004-2023 Free Software Foundation, Inc.
       2     This file is part of the GNU C Library.
       3  
       4     The GNU C Library is free software; you can redistribute it and/or
       5     modify it under the terms of the GNU Lesser General Public
       6     License as published by the Free Software Foundation; either
       7     version 2.1 of the License, or (at your option) any later version.
       8  
       9     The GNU C Library is distributed in the hope that it will be useful,
      10     but WITHOUT ANY WARRANTY; without even the implied warranty of
      11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      12     Lesser General Public License for more details.
      13  
      14     You should have received a copy of the GNU Lesser General Public
      15     License along with the GNU C Library; if not, see
      16     <https://www.gnu.org/licenses/>.  */
      17  
      18  #include <stdlib.h>
      19  
      20  /* Return 1 if the whole area PTR .. PTR+SIZE is not writable.
      21     Return -1 if it is writable.  */
      22  
      23  int
      24  __readonly_area (const void *ptr, size_t size)
      25  {
      26    /* We cannot determine in general whether memory is writable or not.
      27       This must be handled in a system-dependent manner.  to not
      28       unconditionally break code we need to return here a positive
      29       answer.  This disables this security measure but that is the
      30       price people have to pay for using systems without a real
      31       implementation of this interface.  */
      32    return 1;
      33  }