1 /* Checking macros for string functions.
2 Copyright (C) 2004-2023 Free Software Foundation, Inc.
3
4 This file is part of GCC.
5
6 GCC is free software; you can redistribute it and/or modify it under
7 the terms of the GNU General Public License as published by the Free
8 Software Foundation; either version 3, or (at your option) any later
9 version.
10
11 In addition to the permissions in the GNU General Public License, the
12 Free Software Foundation gives you unlimited permission to link the
13 compiled version of this file into combinations with other programs,
14 and to distribute those combinations without any restriction coming
15 from the use of this file. (The General Public License restrictions
16 do apply in other respects; for example, they cover modification of
17 the file, and distribution when not linked into a combine
18 executable.)
19
20 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
21 WARRANTY; without even the implied warranty of MERCHANTABILITY or
22 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
23 for more details.
24
25 Under Section 7 of GPL version 3, you are granted additional
26 permissions described in the GCC Runtime Library Exception, version
27 3.1, as published by the Free Software Foundation.
28
29 You should have received a copy of the GNU General Public License and
30 a copy of the GCC Runtime Library Exception along with this program;
31 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
32 <http://www.gnu.org/licenses/>. */
33
34
35 #ifndef _SSP_STRING_H
36 #define _SSP_STRING_H 1
37
38 #include <ssp.h>
39 #include_next <string.h>
40
41 #if __SSP_FORTIFY_LEVEL > 0
42
43 #undef memcpy
44 #undef memmove
45 #undef memset
46 #undef strcat
47 #undef strcpy
48 #undef strncat
49 #undef strncpy
50 #undef mempcpy
51 #undef stpcpy
52 #undef bcopy
53 #undef bzero
54
55 #define memcpy(dest, src, len) \
56 ((__ssp_bos0 (dest) != (size_t) -1) \
57 ? __builtin___memcpy_chk (dest, src, len, __ssp_bos0 (dest)) \
58 : __memcpy_ichk (dest, src, len))
59 static inline __attribute__((__always_inline__)) void *
60 __memcpy_ichk (void *__restrict__ __dest, const void *__restrict__ __src,
61 size_t __len)
62 {
63 return __builtin___memcpy_chk (__dest, __src, __len, __ssp_bos0 (__dest));
64 }
65
66
67 #define memmove(dest, src, len) \
68 ((__ssp_bos0 (dest) != (size_t) -1) \
69 ? __builtin___memmove_chk (dest, src, len, __ssp_bos0 (dest)) \
70 : __memmove_ichk (dest, src, len))
71 static inline __attribute__((__always_inline__)) void *
72 __memmove_ichk (void *__dest, const void *__src, size_t __len)
73 {
74 return __builtin___memmove_chk (__dest, __src, __len, __ssp_bos0 (__dest));
75 }
76
77
78 #define mempcpy(dest, src, len) \
79 ((__ssp_bos0 (dest) != (size_t) -1) \
80 ? __builtin___mempcpy_chk (dest, src, len, __ssp_bos0 (dest)) \
81 : __mempcpy_ichk (dest, src, len))
82 static inline __attribute__((__always_inline__)) void *
83 __mempcpy_ichk (void *__restrict__ __dest, const void *__restrict__ __src,
84 size_t __len)
85 {
86 return __builtin___mempcpy_chk (__dest, __src, __len, __ssp_bos0 (__dest));
87 }
88
89
90 #define memset(dest, ch, len) \
91 ((__ssp_bos0 (dest) != (size_t) -1) \
92 ? __builtin___memset_chk (dest, ch, len, __ssp_bos0 (dest)) \
93 : __memset_ichk (dest, ch, len))
94 static inline __attribute__((__always_inline__)) void *
95 __memset_ichk (void *__dest, int __ch, size_t __len)
96 {
97 return __builtin___memset_chk (__dest, __ch, __len, __ssp_bos0 (__dest));
98 }
99
100 #define bcopy(src, dest, len) ((void) \
101 ((__ssp_bos0 (dest) != (size_t) -1) \
102 ? __builtin___memmove_chk (dest, src, len, __ssp_bos0 (dest)) \
103 : __memmove_ichk (dest, src, len)))
104 #define bzero(dest, len) ((void) \
105 ((__ssp_bos0 (dest) != (size_t) -1) \
106 ? __builtin___memset_chk (dest, '\0', len, __ssp_bos0 (dest)) \
107 : __memset_ichk (dest, '\0', len)))
108
109
110 #define strcpy(dest, src) \
111 ((__ssp_bos (dest) != (size_t) -1) \
112 ? __builtin___strcpy_chk (dest, src, __ssp_bos (dest)) \
113 : __strcpy_ichk (dest, src))
114 static inline __attribute__((__always_inline__)) char *
115 __strcpy_ichk (char *__restrict__ __dest, const char *__restrict__ __src)
116 {
117 return __builtin___strcpy_chk (__dest, __src, __ssp_bos (__dest));
118 }
119
120
121 #define stpcpy(dest, src) \
122 ((__ssp_bos (dest) != (size_t) -1) \
123 ? __builtin___stpcpy_chk (dest, src, __ssp_bos (dest)) \
124 : __stpcpy_ichk (dest, src))
125 static inline __attribute__((__always_inline__)) char *
126 __stpcpy_ichk (char *__restrict__ __dest, const char *__restrict__ __src)
127 {
128 return __builtin___stpcpy_chk (__dest, __src, __ssp_bos (__dest));
129 }
130
131
132 #define strncpy(dest, src, len) \
133 ((__ssp_bos (dest) != (size_t) -1) \
134 ? __builtin___strncpy_chk (dest, src, len, __ssp_bos (dest)) \
135 : __strncpy_ichk (dest, src, len))
136 static inline __attribute__((__always_inline__)) char *
137 __strncpy_ichk (char *__restrict__ __dest, const char *__restrict__ __src,
138 size_t __len)
139 {
140 return __builtin___strncpy_chk (__dest, __src, __len, __ssp_bos (__dest));
141 }
142
143
144 #define strcat(dest, src) \
145 ((__ssp_bos (dest) != (size_t) -1) \
146 ? __builtin___strcat_chk (dest, src, __ssp_bos (dest)) \
147 : __strcat_ichk (dest, src))
148 static inline __attribute__((__always_inline__)) char *
149 __strcat_ichk (char *__restrict__ __dest, const char *__restrict__ __src)
150 {
151 return __builtin___strcat_chk (__dest, __src, __ssp_bos (__dest));
152 }
153
154
155 #define strncat(dest, src, len) \
156 ((__ssp_bos (dest) != (size_t) -1) \
157 ? __builtin___strncat_chk (dest, src, len, __ssp_bos (dest)) \
158 : __strncat_ichk (dest, src, len))
159 static inline __attribute__((__always_inline__)) char *
160 __strncat_ichk (char *__restrict__ __dest, const char *__restrict__ __src,
161 size_t __len)
162 {
163 return __builtin___strncat_chk (__dest, __src, __len, __ssp_bos (__dest));
164 }
165
166 #endif /* __SSP_FORTIFY_LEVEL > 0 */
167 #endif /* _SSP_STRING_H */