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lib/libc/secure/strncpy_chk.c
- This file was added.
| /* $NetBSD: strncpy_chk.c,v 1.6 2015/05/09 15:42:21 christos Exp $ */ | |||||
| /*- | |||||
| * Copyright (c) 2006 The NetBSD Foundation, Inc. | |||||
| * All rights reserved. | |||||
| * | |||||
| * This code is derived from software contributed to The NetBSD Foundation | |||||
| * by Christos Zoulas. | |||||
| * | |||||
| * Redistribution and use in source and binary forms, with or without | |||||
| * modification, are permitted provided that the following conditions | |||||
| * are met: | |||||
| * 1. Redistributions of source code must retain the above copyright | |||||
| * notice, this list of conditions and the following disclaimer. | |||||
| * 2. Redistributions in binary form must reproduce the above copyright | |||||
| * notice, this list of conditions and the following disclaimer in the | |||||
| * documentation and/or other materials provided with the distribution. | |||||
| * | |||||
| * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS | |||||
| * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED | |||||
| * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |||||
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS | |||||
| * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |||||
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |||||
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |||||
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |||||
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |||||
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |||||
| * POSSIBILITY OF SUCH DAMAGE. | |||||
| */ | |||||
| #include <sys/cdefs.h> | |||||
| __RCSID("$NetBSD: strncpy_chk.c,v 1.6 2015/05/09 15:42:21 christos Exp $"); | |||||
| #include <string.h> | |||||
| #include <ssp/string.h> | |||||
| #undef strncpy | |||||
| char * | |||||
| __strncpy_chk(char * __restrict dst, const char * __restrict src, size_t len, | |||||
| size_t slen) | |||||
| { | |||||
| if (len > slen) | |||||
| __chk_fail(); | |||||
| if (__ssp_overlap(src, dst, len)) | |||||
| __chk_fail(); | |||||
| return (strncpy(dst, src, len)); | |||||
| } | |||||