libc/ssp/stpcpy_chk.c

1.5.6.2  tls /*	$NetBSD: stpcpy_chk.c,v 1.5.6.2 2014/08/20 00:02:16 tls Exp $	*/
1.5.6.2  tls
1.5.6.2  tls /*-
1.5.6.2  tls  * Copyright (c) 2013 The NetBSD Foundation, Inc.
1.5.6.2  tls  * All rights reserved.
1.5.6.2  tls  *
1.5.6.2  tls  * This code is derived from software contributed to The NetBSD Foundation
1.5.6.2  tls  * by Christos Zoulas.
1.5.6.2  tls  *
1.5.6.2  tls  * Redistribution and use in source and binary forms, with or without
1.5.6.2  tls  * modification, are permitted provided that the following conditions
1.5.6.2  tls  * are met:
1.5.6.2  tls  * 1. Redistributions of source code must retain the above copyright
1.5.6.2  tls  *    notice, this list of conditions and the following disclaimer.
1.5.6.2  tls  * 2. Redistributions in binary form must reproduce the above copyright
1.5.6.2  tls  *    notice, this list of conditions and the following disclaimer in the
1.5.6.2  tls  *    documentation and/or other materials provided with the distribution.
1.5.6.2  tls  *
1.5.6.2  tls  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
1.5.6.2  tls  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
1.5.6.2  tls  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
1.5.6.2  tls  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
1.5.6.2  tls  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
1.5.6.2  tls  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
1.5.6.2  tls  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
1.5.6.2  tls  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
1.5.6.2  tls  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
1.5.6.2  tls  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
1.5.6.2  tls  * POSSIBILITY OF SUCH DAMAGE.
1.5.6.2  tls  */
1.5.6.2  tls #include <sys/cdefs.h>
1.5.6.2  tls __RCSID("$NetBSD: stpcpy_chk.c,v 1.5.6.2 2014/08/20 00:02:16 tls Exp $");
1.5.6.2  tls
1.5.6.2  tls /*LINTLIBRARY*/
1.5.6.2  tls
1.5.6.2  tls #include <ssp/ssp.h>
1.5.6.2  tls #include <string.h>
1.5.6.2  tls
1.5.6.2  tls #undef memcpy
1.5.6.2  tls
1.5.6.2  tls #if !__GNUC_PREREQ__(4, 8)
1.5.6.2  tls char *__stpcpy_chk(char * __restrict, const char * __restrict, size_t);
1.5.6.2  tls #endif
1.5.6.2  tls
1.5.6.2  tls char *
1.5.6.2  tls __stpcpy_chk(char * __restrict dst, const char * __restrict src, size_t slen)
1.5.6.2  tls {
1.5.6.2  tls 	size_t len = strlen(src);
1.5.6.2  tls
1.5.6.2  tls 	if (len >= slen)
1.5.6.2  tls 		__chk_fail();
1.5.6.2  tls
1.5.6.2  tls 	(void)memcpy(dst, src, len + 1);
1.5.6.2  tls 	return dst + len;
1.5.6.2  tls }