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
__readonly_area(const void * ptr,size_t size)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