Annotation of src/lib/libc/ssp/vsprintf_chk.c, Revision 1.4
1.4 ! kristerw 1: /* $NetBSD: vsprintf_chk.c,v 1.3 2007/06/03 17:34:37 christos Exp $ */
1.1 tls 2:
3: /*-
4: * Copyright (c) 2006 The NetBSD Foundation, Inc.
5: * All rights reserved.
6: *
7: * This code is derived from software contributed to The NetBSD Foundation
8: * by Christos Zoulas.
9: *
10: * Redistribution and use in source and binary forms, with or without
11: * modification, are permitted provided that the following conditions
12: * are met:
13: * 1. Redistributions of source code must retain the above copyright
14: * notice, this list of conditions and the following disclaimer.
15: * 2. Redistributions in binary form must reproduce the above copyright
16: * notice, this list of conditions and the following disclaimer in the
17: * documentation and/or other materials provided with the distribution.
18: * 3. All advertising materials mentioning features or use of this software
19: * must display the following acknowledgement:
20: * This product includes software developed by the NetBSD
21: * Foundation, Inc. and its contributors.
22: * 4. Neither the name of The NetBSD Foundation nor the names of its
23: * contributors may be used to endorse or promote products derived
24: * from this software without specific prior written permission.
25: *
26: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
27: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
30: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36: * POSSIBILITY OF SUCH DAMAGE.
37: */
38: #include <sys/cdefs.h>
1.4 ! kristerw 39: __RCSID("$NetBSD: vsprintf_chk.c,v 1.3 2007/06/03 17:34:37 christos Exp $");
1.1 tls 40:
41: /*LINTLIBRARY*/
42:
1.2 tls 43: #include <ssp/ssp.h>
1.1 tls 44: #include <stdio.h>
45: #include <limits.h>
46: #include <stdarg.h>
1.4 ! kristerw 47: #include <ssp/stdio.h>
1.1 tls 48:
1.3 christos 49: #undef vsprintf
50: #undef vsnprintf
51:
1.1 tls 52: /*ARGSUSED*/
53: int
54: __vsprintf_chk(char * __restrict buf, int flags, size_t slen,
55: const char * __restrict fmt, va_list ap)
56: {
57: int rv;
58:
59: if (slen > (size_t)INT_MAX)
60: rv = vsprintf(buf, fmt, ap);
61: else {
62: if ((rv = vsnprintf(buf, slen, fmt, ap)) >= 0 && rv >= slen)
63: __chk_fail();
64: }
65:
66: return rv;
67: }
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