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stpncpy_chk.c revision 1.2.4.2 
      1  1.2.4.2  yamt /*	$NetBSD: stpncpy_chk.c,v 1.2.4.2 2014/05/22 11:36:54 yamt Exp $	*/
      2  1.2.4.2  yamt 
      3  1.2.4.2  yamt /*-
      4  1.2.4.2  yamt  * Copyright (c) 2013 The NetBSD Foundation, Inc.
      5  1.2.4.2  yamt  * All rights reserved.
      6  1.2.4.2  yamt  *
      7  1.2.4.2  yamt  * This code is derived from software contributed to The NetBSD Foundation
      8  1.2.4.2  yamt  * by Christos Zoulas.
      9  1.2.4.2  yamt  *
     10  1.2.4.2  yamt  * Redistribution and use in source and binary forms, with or without
     11  1.2.4.2  yamt  * modification, are permitted provided that the following conditions
     12  1.2.4.2  yamt  * are met:
     13  1.2.4.2  yamt  * 1. Redistributions of source code must retain the above copyright
     14  1.2.4.2  yamt  *    notice, this list of conditions and the following disclaimer.
     15  1.2.4.2  yamt  * 2. Redistributions in binary form must reproduce the above copyright
     16  1.2.4.2  yamt  *    notice, this list of conditions and the following disclaimer in the
     17  1.2.4.2  yamt  *    documentation and/or other materials provided with the distribution.
     18  1.2.4.2  yamt  *
     19  1.2.4.2  yamt  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  1.2.4.2  yamt  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  1.2.4.2  yamt  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  1.2.4.2  yamt  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  1.2.4.2  yamt  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  1.2.4.2  yamt  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  1.2.4.2  yamt  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  1.2.4.2  yamt  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  1.2.4.2  yamt  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  1.2.4.2  yamt  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  1.2.4.2  yamt  * POSSIBILITY OF SUCH DAMAGE.
     30  1.2.4.2  yamt  */
     31  1.2.4.2  yamt #include <sys/cdefs.h>
     32  1.2.4.2  yamt __RCSID("$NetBSD: stpncpy_chk.c,v 1.2.4.2 2014/05/22 11:36:54 yamt Exp $");
     33  1.2.4.2  yamt 
     34  1.2.4.2  yamt /*LINTLIBRARY*/
     35  1.2.4.2  yamt 
     36  1.2.4.2  yamt #include <ssp/ssp.h>
     37  1.2.4.2  yamt #include <string.h>
     38  1.2.4.2  yamt 
     39  1.2.4.2  yamt #undef stpncpy
     40  1.2.4.2  yamt 
     41  1.2.4.2  yamt #if !__GNUC_PREREQ__(4, 8)
     42  1.2.4.2  yamt char *__stpncpy_chk(char * __restrict, const char * __restrict, size_t, size_t);
     43  1.2.4.2  yamt #endif
     44  1.2.4.2  yamt 
     45  1.2.4.2  yamt char *
     46  1.2.4.2  yamt __stpncpy_chk(char * __restrict dst, const char * __restrict src, size_t len,
     47  1.2.4.2  yamt     size_t slen)
     48  1.2.4.2  yamt {
     49  1.2.4.2  yamt 	if (len > slen)
     50  1.2.4.2  yamt 		__chk_fail();
     51  1.2.4.2  yamt 
     52  1.2.4.2  yamt 	return stpncpy(dst, src, len);
     53  1.2.4.2  yamt }
     54