fortify_stubs.c revision 356775 
1/*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2019 Kyle Evans <kevans@FreeBSD.org>
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28#include <sys/cdefs.h>
29__FBSDID("$FreeBSD: stable/11/lib/libssp/fortify_stubs.c 356775 2020-01-16 03:38:06Z kevans $");
30
31#include <sys/types.h>
32
33#include <stdarg.h>
34#include <stdlib.h>
35
36/* Signatures grabbed from LSB Core Specification 4.1 */
37void	*__memcpy_chk(void *dst, const void *src, size_t len,
38    size_t dstlen);
39void	*__memset_chk(void *dst, int c, size_t len, size_t dstlen);
40int	__snprintf_chk(char *str, size_t maxlen, int flag, size_t strlen,
41    const char *fmt, ...);
42int	__sprintf_chk(char *str, int flag, size_t strlen, const char *fmt, ...);
43char	*__stpcpy_chk(char *dst, const char *src, size_t dstlen);
44char	*__strcat_chk(char *dst, const char *src, size_t dstlen);
45char	*__strcpy_chk(char *dst, const char *src, size_t dstlen);
46char	*__strncat_chk(char *dst, const char *src, size_t len, size_t dstlen);
47char	*__strncpy_chk(char *dst, const char *src, size_t len, size_t dstlen);
48int	__vsnprintf_chk(char *str, size_t size, int flags, size_t len,
49    const char *format, va_list ap);
50int	__vsprintf_chk(char *str, int flag, size_t slen, const char *format,
51    va_list ap);
52
53#define	ABORT()	abort2("_FORTIFY_SOURCE not supported", 0, NULL)
54
55void *
56__memcpy_chk(void *dst, const void *src, size_t len,
57    size_t dstlen)
58{
59
60	ABORT();
61}
62
63void *
64__memset_chk(void *dst, int c, size_t len, size_t dstlen)
65{
66
67	ABORT();
68}
69
70int
71__snprintf_chk(char *str, size_t maxlen, int flag, size_t strlen,
72    const char *fmt, ...)
73{
74
75	ABORT();
76}
77
78int
79__sprintf_chk(char *str, int flag, size_t strlen, const char *fmt, ...)
80{
81
82	ABORT();
83}
84
85char *
86__stpcpy_chk(char *dst, const char *src, size_t dstlen)
87{
88
89	ABORT();
90}
91
92char *
93__strcat_chk(char *dst, const char *src, size_t dstlen)
94{
95
96	ABORT();
97}
98
99char *
100__strcpy_chk(char *dst, const char *src, size_t dstlen)
101{
102
103	ABORT();
104}
105
106char *
107__strncat_chk(char *dst, const char *src, size_t len, size_t dstlen)
108{
109
110	ABORT();
111}
112
113char *
114__strncpy_chk(char *dst, const char *src, size_t len, size_t dstlen)
115{
116
117	ABORT();
118}
119
120int
121__vsnprintf_chk(char *str, size_t size, int flags, size_t len,
122    const char *format, va_list ap)
123{
124
125	ABORT();
126}
127
128int
129__vsprintf_chk(char *str, int flag, size_t slen, const char *format,
130    va_list ap)
131{
132
133	ABORT();
134}
135