1 | /* Copy memory to memory until the specified number of bytes |
2 | has been copied with error checking. Overlap is handled correctly. |
3 | Copyright (C) 1991-2016 Free Software Foundation, Inc. |
4 | This file is part of the GNU C Library. |
5 | Contributed by Torbjorn Granlund (tege@sics.se). |
6 | |
7 | The GNU C Library is free software; you can redistribute it and/or |
8 | modify it under the terms of the GNU Lesser General Public |
9 | License as published by the Free Software Foundation; either |
10 | version 2.1 of the License, or (at your option) any later version. |
11 | |
12 | The GNU C Library is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
15 | Lesser General Public License for more details. |
16 | |
17 | You should have received a copy of the GNU Lesser General Public |
18 | License along with the GNU C Library; if not, see |
19 | <http://www.gnu.org/licenses/>. */ |
20 | |
21 | #include <string.h> |
22 | #include <memcopy.h> |
23 | |
24 | #ifndef MEMMOVE_CHK |
25 | # define MEMMOVE_CHK __memmove_chk |
26 | #endif |
27 | |
28 | void * |
29 | MEMMOVE_CHK (void *dest, const void *src, size_t len, size_t destlen) |
30 | { |
31 | if (__glibc_unlikely (destlen < len)) |
32 | __chk_fail (); |
33 | |
34 | return memmove (dest, src, len); |
35 | } |
36 | |