1 | /* Copyright (C) 2004-2022 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 | } |
34 | |