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[glibc/history.git] / debug / readonly-area.c
blob4b8172f1935a56f23360e7cbf8d85b19b4cbc3c4
1 /* Copyright (C) 2004 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
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.
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.
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, write to the Free
16 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
17 02111-1307 USA. */
19 #include <stdlib.h>
21 /* Return 1 if the whole area PTR .. PTR+SIZE is not writable.
22 Return -1 if it is writable. */
24 int
25 __readonly_area (const void *ptr, size_t size)
27 /* We cannot determine in general whether memory is writable or not.
28 This must be handled in a system-dependent manner. to not
29 unconditionally break code we need to return here a positive
30 answer. This disables this security measure but that is the
31 price people have to pay for using systems without a real
32 implementation of this interface. */
33 return 1;