|  | /* Copyright (C) 2004-2016 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 Lesser General Public | 
|  | License as published by the Free Software Foundation; either | 
|  | version 2.1 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 | 
|  | Lesser General Public License for more details. | 
|  |  | 
|  | You should have received a copy of the GNU Lesser General Public | 
|  | License along with the GNU C Library; if not, see | 
|  | <http://www.gnu.org/licenses/>.  */ | 
|  |  | 
|  | #include <stdlib.h> | 
|  |  | 
|  | /* Return 1 if the whole area PTR .. PTR+SIZE is not writable. | 
|  | Return -1 if it is writable.  */ | 
|  |  | 
|  | int | 
|  | __readonly_area (const void *ptr, size_t size) | 
|  | { | 
|  | /* We cannot determine in general whether memory is writable or not. | 
|  | This must be handled in a system-dependent manner.  to not | 
|  | unconditionally break code we need to return here a positive | 
|  | answer.  This disables this security measure but that is the | 
|  | price people have to pay for using systems without a real | 
|  | implementation of this interface.  */ | 
|  | return 1; | 
|  | } |