1 /*
2 * Copyright (C) 2012 The Android Open Source Project
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * * Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in
12 * the documentation and/or other materials provided with the
13 * distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29 #include <stdio.h>
30 #include <stdarg.h>
31
32 /*
33 * Runtime implementation of __builtin____sprintf_chk.
34 *
35 * See
36 * http://gcc.gnu.org/onlinedocs/gcc/Object-Size-Checking.html
37 * http://gcc.gnu.org/ml/gcc-patches/2004-09/msg02055.html
38 * for details.
39 *
40 * This sprintf check is called if _FORTIFY_SOURCE is defined and
41 * greater than 0.
42 */
__sprintf_chk(char * dest,int flags,size_t dest_len_from_compiler,const char * format,...)43 int __sprintf_chk(
44 char *dest,
45 int flags,
46 size_t dest_len_from_compiler,
47 const char *format, ...)
48 {
49 va_list va;
50 int retval;
51
52 va_start(va, format);
53 retval = __vsprintf_chk(dest, flags,
54 dest_len_from_compiler, format, va);
55 va_end(va);
56
57 return retval;
58 }
59