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 #include <sys/types.h>
30
31 #include <stdarg.h>
32 #include <stdlib.h>
33
34 /* Signatures grabbed from LSB Core Specification 4.1 */
35 void *__memcpy_chk(void *dst, const void *src, size_t len,
36 size_t dstlen);
37 void *__memset_chk(void *dst, int c, size_t len, size_t dstlen);
38 int __snprintf_chk(char *str, size_t maxlen, int flag, size_t strlen,
39 const char *fmt, ...);
40 int __sprintf_chk(char *str, int flag, size_t strlen, const char *fmt, ...);
41 char *__stpcpy_chk(char *dst, const char *src, size_t dstlen);
42 char *__strcat_chk(char *dst, const char *src, size_t dstlen);
43 char *__strcpy_chk(char *dst, const char *src, size_t dstlen);
44 char *__strncat_chk(char *dst, const char *src, size_t len, size_t dstlen);
45 char *__strncpy_chk(char *dst, const char *src, size_t len, size_t dstlen);
46 int __vsnprintf_chk(char *str, size_t size, int flags, size_t len,
47 const char *format, va_list ap);
48 int __vsprintf_chk(char *str, int flag, size_t slen, const char *format,
49 va_list ap);
50
51 #define ABORT() abort2("_FORTIFY_SOURCE not supported", 0, NULL)
52
53 void *
__memcpy_chk(void * dst,const void * src,size_t len,size_t dstlen)54 __memcpy_chk(void *dst, const void *src, size_t len,
55 size_t dstlen)
56 {
57
58 ABORT();
59 }
60
61 void *
__memset_chk(void * dst,int c,size_t len,size_t dstlen)62 __memset_chk(void *dst, int c, size_t len, size_t dstlen)
63 {
64
65 ABORT();
66 }
67
68 int
__snprintf_chk(char * str,size_t maxlen,int flag,size_t strlen,const char * fmt,...)69 __snprintf_chk(char *str, size_t maxlen, int flag, size_t strlen,
70 const char *fmt, ...)
71 {
72
73 ABORT();
74 }
75
76 int
__sprintf_chk(char * str,int flag,size_t strlen,const char * fmt,...)77 __sprintf_chk(char *str, int flag, size_t strlen, const char *fmt, ...)
78 {
79
80 ABORT();
81 }
82
83 char *
__stpcpy_chk(char * dst,const char * src,size_t dstlen)84 __stpcpy_chk(char *dst, const char *src, size_t dstlen)
85 {
86
87 ABORT();
88 }
89
90 char *
__strcat_chk(char * dst,const char * src,size_t dstlen)91 __strcat_chk(char *dst, const char *src, size_t dstlen)
92 {
93
94 ABORT();
95 }
96
97 char *
__strcpy_chk(char * dst,const char * src,size_t dstlen)98 __strcpy_chk(char *dst, const char *src, size_t dstlen)
99 {
100
101 ABORT();
102 }
103
104 char *
__strncat_chk(char * dst,const char * src,size_t len,size_t dstlen)105 __strncat_chk(char *dst, const char *src, size_t len, size_t dstlen)
106 {
107
108 ABORT();
109 }
110
111 char *
__strncpy_chk(char * dst,const char * src,size_t len,size_t dstlen)112 __strncpy_chk(char *dst, const char *src, size_t len, size_t dstlen)
113 {
114
115 ABORT();
116 }
117
118 int
__vsnprintf_chk(char * str,size_t size,int flags,size_t len,const char * format,va_list ap)119 __vsnprintf_chk(char *str, size_t size, int flags, size_t len,
120 const char *format, va_list ap)
121 {
122
123 ABORT();
124 }
125
126 int
__vsprintf_chk(char * str,int flag,size_t slen,const char * format,va_list ap)127 __vsprintf_chk(char *str, int flag, size_t slen, const char *format,
128 va_list ap)
129 {
130
131 ABORT();
132 }
133