xref: /freebsd/include/ssp/stdio.h (revision c57c26179033f64c2011a2d2a904ee3fa62e826a)
1 /*	$NetBSD: stdio.h,v 1.5 2011/07/17 20:54:34 joerg Exp $	*/
2 
3 /*-
4  *
5  * SPDX-License-Identifier: BSD-2-Clause
6  *
7  * Copyright (c) 2006 The NetBSD Foundation, Inc.
8  * All rights reserved.
9  *
10  * This code is derived from software contributed to The NetBSD Foundation
11  * by Christos Zoulas.
12  *
13  * Redistribution and use in source and binary forms, with or without
14  * modification, are permitted provided that the following conditions
15  * are met:
16  * 1. Redistributions of source code must retain the above copyright
17  *    notice, this list of conditions and the following disclaimer.
18  * 2. Redistributions in binary form must reproduce the above copyright
19  *    notice, this list of conditions and the following disclaimer in the
20  *    documentation and/or other materials provided with the distribution.
21  *
22  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
23  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
24  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
25  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
26  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
29  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
30  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
32  * POSSIBILITY OF SUCH DAMAGE.
33  */
34 #ifndef _SSP_STDIO_H_
35 #define _SSP_STDIO_H_
36 
37 #include <ssp/ssp.h>
38 
39 __BEGIN_DECLS
40 int __sprintf_chk(char *__restrict, int, size_t, const char *__restrict, ...)
41     __printflike(4, 5);
42 int __vsprintf_chk(char *__restrict, int, size_t, const char *__restrict,
43     __va_list)
44     __printflike(4, 0);
45 int __snprintf_chk(char *__restrict, size_t, int, size_t,
46     const char *__restrict, ...)
47     __printflike(5, 6);
48 int __vsnprintf_chk(char *__restrict, size_t, int, size_t,
49      const char *__restrict, __va_list)
50     __printflike(5, 0);
51 char *__fgets_chk(char *, int, size_t, FILE *);
52 __END_DECLS
53 
54 #if __SSP_FORTIFY_LEVEL > 0
55 
56 #define sprintf(str, ...) __extension__ ({	\
57     char *_ssp_str = (str);	\
58     __builtin___sprintf_chk(_ssp_str, 0, __ssp_bos(_ssp_str),		\
59         __VA_ARGS__); \
60 })
61 
62 #define vsprintf(str, fmt, ap) __extension__ ({	\
63     char *_ssp_str = (str);		\
64     __builtin___vsprintf_chk(_ssp_str, 0, __ssp_bos(_ssp_str), fmt,	\
65         ap);				\
66 })
67 
68 #define snprintf(str, len, ...) __extension__ ({	\
69     char *_ssp_str = (str);		\
70     __builtin___snprintf_chk(_ssp_str, len, 0, __ssp_bos(_ssp_str),	\
71         __VA_ARGS__);			\
72 })
73 
74 #define vsnprintf(str, len, fmt, ap) __extension__ ({	\
75     char *_ssp_str = (str);		\
76     __builtin___vsnprintf_chk(_ssp_str, len, 0, __ssp_bos(_ssp_str),	\
77         fmt, ap);			\
78 })
79 
80 #define fgets(str, len, fp) __extension__ ({		\
81     char *_ssp_str = (str);		\
82     __fgets_chk(_ssp_str, len, __ssp_bos(_ssp_str), fp);	\
83 })
84 
85 #endif /* __SSP_FORTIFY_LEVEL > 0 */
86 
87 #endif /* _SSP_STDIO_H_ */
88