1*2fe8fb19SBen Gras /* $NetBSD: snprintf_chk.c,v 1.5 2008/04/28 20:23:00 martin Exp $ */
2*2fe8fb19SBen Gras
3*2fe8fb19SBen Gras /*-
4*2fe8fb19SBen Gras * Copyright (c) 2006 The NetBSD Foundation, Inc.
5*2fe8fb19SBen Gras * All rights reserved.
6*2fe8fb19SBen Gras *
7*2fe8fb19SBen Gras * This code is derived from software contributed to The NetBSD Foundation
8*2fe8fb19SBen Gras * by Christos Zoulas.
9*2fe8fb19SBen Gras *
10*2fe8fb19SBen Gras * Redistribution and use in source and binary forms, with or without
11*2fe8fb19SBen Gras * modification, are permitted provided that the following conditions
12*2fe8fb19SBen Gras * are met:
13*2fe8fb19SBen Gras * 1. Redistributions of source code must retain the above copyright
14*2fe8fb19SBen Gras * notice, this list of conditions and the following disclaimer.
15*2fe8fb19SBen Gras * 2. Redistributions in binary form must reproduce the above copyright
16*2fe8fb19SBen Gras * notice, this list of conditions and the following disclaimer in the
17*2fe8fb19SBen Gras * documentation and/or other materials provided with the distribution.
18*2fe8fb19SBen Gras *
19*2fe8fb19SBen Gras * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20*2fe8fb19SBen Gras * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21*2fe8fb19SBen Gras * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22*2fe8fb19SBen Gras * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23*2fe8fb19SBen Gras * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24*2fe8fb19SBen Gras * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25*2fe8fb19SBen Gras * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26*2fe8fb19SBen Gras * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27*2fe8fb19SBen Gras * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28*2fe8fb19SBen Gras * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29*2fe8fb19SBen Gras * POSSIBILITY OF SUCH DAMAGE.
30*2fe8fb19SBen Gras */
31*2fe8fb19SBen Gras #include <sys/cdefs.h>
32*2fe8fb19SBen Gras __RCSID("$NetBSD: snprintf_chk.c,v 1.5 2008/04/28 20:23:00 martin Exp $");
33*2fe8fb19SBen Gras
34*2fe8fb19SBen Gras /*LINTLIBRARY*/
35*2fe8fb19SBen Gras
36*2fe8fb19SBen Gras #include <ssp/ssp.h>
37*2fe8fb19SBen Gras #include <stdio.h>
38*2fe8fb19SBen Gras #include <stdarg.h>
39*2fe8fb19SBen Gras #include <ssp/stdio.h>
40*2fe8fb19SBen Gras
41*2fe8fb19SBen Gras #undef vsnprintf
42*2fe8fb19SBen Gras
43*2fe8fb19SBen Gras /*ARGSUSED*/
44*2fe8fb19SBen Gras int
__snprintf_chk(char * __restrict buf,size_t len,int flags,size_t slen,const char * __restrict fmt,...)45*2fe8fb19SBen Gras __snprintf_chk(char * __restrict buf, size_t len, int flags, size_t slen,
46*2fe8fb19SBen Gras const char * __restrict fmt, ...)
47*2fe8fb19SBen Gras {
48*2fe8fb19SBen Gras va_list ap;
49*2fe8fb19SBen Gras int rv;
50*2fe8fb19SBen Gras
51*2fe8fb19SBen Gras if (len > slen)
52*2fe8fb19SBen Gras __chk_fail();
53*2fe8fb19SBen Gras
54*2fe8fb19SBen Gras va_start(ap, fmt);
55*2fe8fb19SBen Gras rv = vsnprintf(buf, len, fmt, ap);
56*2fe8fb19SBen Gras va_end(ap);
57*2fe8fb19SBen Gras
58*2fe8fb19SBen Gras return rv;
59*2fe8fb19SBen Gras }
60