libc/ssp/strncpy_chk.c

1.3.2.2  liamjfoy /*	$NetBSD: strncpy_chk.c,v 1.3.2.2 2007/07/22 18:44:48 liamjfoy Exp $	*/
1.3.2.2  liamjfoy
1.3.2.2  liamjfoy /*-
1.3.2.2  liamjfoy  * Copyright (c) 2006 The NetBSD Foundation, Inc.
1.3.2.2  liamjfoy  * All rights reserved.
1.3.2.2  liamjfoy  *
1.3.2.2  liamjfoy  * This code is derived from software contributed to The NetBSD Foundation
1.3.2.2  liamjfoy  * by Christos Zoulas.
1.3.2.2  liamjfoy  *
1.3.2.2  liamjfoy  * Redistribution and use in source and binary forms, with or without
1.3.2.2  liamjfoy  * modification, are permitted provided that the following conditions
1.3.2.2  liamjfoy  * are met:
1.3.2.2  liamjfoy  * 1. Redistributions of source code must retain the above copyright
1.3.2.2  liamjfoy  *    notice, this list of conditions and the following disclaimer.
1.3.2.2  liamjfoy  * 2. Redistributions in binary form must reproduce the above copyright
1.3.2.2  liamjfoy  *    notice, this list of conditions and the following disclaimer in the
1.3.2.2  liamjfoy  *    documentation and/or other materials provided with the distribution.
1.3.2.2  liamjfoy  * 3. All advertising materials mentioning features or use of this software
1.3.2.2  liamjfoy  *    must display the following acknowledgement:
1.3.2.2  liamjfoy  *        This product includes software developed by the NetBSD
1.3.2.2  liamjfoy  *        Foundation, Inc. and its contributors.
1.3.2.2  liamjfoy  * 4. Neither the name of The NetBSD Foundation nor the names of its
1.3.2.2  liamjfoy  *    contributors may be used to endorse or promote products derived
1.3.2.2  liamjfoy  *    from this software without specific prior written permission.
1.3.2.2  liamjfoy  *
1.3.2.2  liamjfoy  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
1.3.2.2  liamjfoy  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
1.3.2.2  liamjfoy  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
1.3.2.2  liamjfoy  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
1.3.2.2  liamjfoy  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
1.3.2.2  liamjfoy  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
1.3.2.2  liamjfoy  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
1.3.2.2  liamjfoy  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
1.3.2.2  liamjfoy  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
1.3.2.2  liamjfoy  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
1.3.2.2  liamjfoy  * POSSIBILITY OF SUCH DAMAGE.
1.3.2.2  liamjfoy  */
1.3.2.2  liamjfoy #include <sys/cdefs.h>
1.3.2.2  liamjfoy __RCSID("$NetBSD: strncpy_chk.c,v 1.3.2.2 2007/07/22 18:44:48 liamjfoy Exp $");
1.3.2.2  liamjfoy
1.3.2.2  liamjfoy /*LINTLIBRARY*/
1.3.2.2  liamjfoy
1.3.2.2  liamjfoy #include <ssp/ssp.h>
1.3.2.2  liamjfoy #include <string.h>
1.3.2.2  liamjfoy
1.3.2.2  liamjfoy #undef strncpy
1.3.2.2  liamjfoy
1.3.2.2  liamjfoy char *
1.3.2.2  liamjfoy __strncpy_chk(char * __restrict dst, const char * __restrict src, size_t len,
1.3.2.2  liamjfoy     size_t slen)
1.3.2.2  liamjfoy {
1.3.2.2  liamjfoy 	if (len > slen)
1.3.2.2  liamjfoy 		__chk_fail();
1.3.2.2  liamjfoy
1.3.2.2  liamjfoy 	return strncpy(dst, src, len);
1.3.2.2  liamjfoy }