1*5d6007beSjoerg /* $NetBSD: memcpy_chk.c,v 1.7 2015/05/13 19:57:16 joerg Exp $ */
22368dc66Stls
32368dc66Stls /*-
42368dc66Stls * Copyright (c) 2006 The NetBSD Foundation, Inc.
52368dc66Stls * All rights reserved.
62368dc66Stls *
72368dc66Stls * This code is derived from software contributed to The NetBSD Foundation
82368dc66Stls * by Christos Zoulas.
92368dc66Stls *
102368dc66Stls * Redistribution and use in source and binary forms, with or without
112368dc66Stls * modification, are permitted provided that the following conditions
122368dc66Stls * are met:
132368dc66Stls * 1. Redistributions of source code must retain the above copyright
142368dc66Stls * notice, this list of conditions and the following disclaimer.
152368dc66Stls * 2. Redistributions in binary form must reproduce the above copyright
162368dc66Stls * notice, this list of conditions and the following disclaimer in the
172368dc66Stls * documentation and/or other materials provided with the distribution.
182368dc66Stls *
192368dc66Stls * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
202368dc66Stls * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
212368dc66Stls * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
222368dc66Stls * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
232368dc66Stls * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
242368dc66Stls * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
252368dc66Stls * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
262368dc66Stls * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
272368dc66Stls * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
282368dc66Stls * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
292368dc66Stls * POSSIBILITY OF SUCH DAMAGE.
302368dc66Stls */
312368dc66Stls #include <sys/cdefs.h>
32*5d6007beSjoerg __RCSID("$NetBSD: memcpy_chk.c,v 1.7 2015/05/13 19:57:16 joerg Exp $");
332368dc66Stls
342368dc66Stls /*LINTLIBRARY*/
352368dc66Stls
36dc99372bStls #include <ssp/ssp.h>
372368dc66Stls #include <string.h>
382368dc66Stls
39d9b4f5bbSchristos #undef memcpy
40d9b4f5bbSchristos
41a00bc989Sjoerg void *__memcpy_chk(void * __restrict, const void * __restrict, size_t, size_t);
42a00bc989Sjoerg
432368dc66Stls void *
__memcpy_chk(void * __restrict dst,const void * __restrict src,size_t len,size_t slen)442368dc66Stls __memcpy_chk(void * __restrict dst, const void * __restrict src, size_t len,
452368dc66Stls size_t slen)
462368dc66Stls {
472368dc66Stls if (len > slen)
482368dc66Stls __chk_fail();
49fd05aad2Schristos
50*5d6007beSjoerg if (__ssp_overlap((const char *)src, (const char *)dst, len))
51fd05aad2Schristos __chk_fail();
52fd05aad2Schristos
532368dc66Stls return memcpy(dst, src, len);
542368dc66Stls }
55