1 | /* Checking macros for string functions.
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2 | Copyright (C) 2004-2021 Free Software Foundation, Inc.
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3 |
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4 | This file is part of GCC.
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5 |
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6 | GCC is free software; you can redistribute it and/or modify it under
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7 | the terms of the GNU General Public License as published by the Free
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8 | Software Foundation; either version 3, or (at your option) any later
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9 | version.
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10 |
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11 | In addition to the permissions in the GNU General Public License, the
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12 | Free Software Foundation gives you unlimited permission to link the
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13 | compiled version of this file into combinations with other programs,
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14 | and to distribute those combinations without any restriction coming
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15 | from the use of this file. (The General Public License restrictions
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16 | do apply in other respects; for example, they cover modification of
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17 | the file, and distribution when not linked into a combine
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18 | executable.)
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19 |
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20 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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21 | WARRANTY; without even the implied warranty of MERCHANTABILITY or
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22 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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23 | for more details.
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24 |
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25 | Under Section 7 of GPL version 3, you are granted additional
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26 | permissions described in the GCC Runtime Library Exception, version
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27 | 3.1, as published by the Free Software Foundation.
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28 |
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29 | You should have received a copy of the GNU General Public License and
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30 | a copy of the GCC Runtime Library Exception along with this program;
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31 | see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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32 | <http://www.gnu.org/licenses/>. */
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33 |
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34 |
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35 | #ifndef _SSP_STRING_H
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36 | #define _SSP_STRING_H 1
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37 |
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38 | #include <ssp.h>
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39 | #include_next <string.h>
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40 |
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41 | #if __SSP_FORTIFY_LEVEL > 0
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42 |
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43 | #undef memcpy
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44 | #undef memmove
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45 | #undef memset
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46 | #undef strcat
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47 | #undef strcpy
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48 | #undef strncat
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49 | #undef strncpy
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50 | #undef mempcpy
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51 | #undef stpcpy
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52 | #undef bcopy
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53 | #undef bzero
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54 |
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55 | #define memcpy(dest, src, len) \
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56 | ((__ssp_bos0 (dest) != (size_t) -1) \
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57 | ? __builtin___memcpy_chk (dest, src, len, __ssp_bos0 (dest)) \
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58 | : __memcpy_ichk (dest, src, len))
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59 | static inline __attribute__((__always_inline__)) void *
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60 | __memcpy_ichk (void *__restrict__ __dest, const void *__restrict__ __src,
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61 | size_t __len)
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62 | {
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63 | return __builtin___memcpy_chk (__dest, __src, __len, __ssp_bos0 (__dest));
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64 | }
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65 |
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66 |
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67 | #define memmove(dest, src, len) \
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68 | ((__ssp_bos0 (dest) != (size_t) -1) \
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69 | ? __builtin___memmove_chk (dest, src, len, __ssp_bos0 (dest)) \
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70 | : __memmove_ichk (dest, src, len))
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71 | static inline __attribute__((__always_inline__)) void *
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72 | __memmove_ichk (void *__dest, const void *__src, size_t __len)
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73 | {
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74 | return __builtin___memmove_chk (__dest, __src, __len, __ssp_bos0 (__dest));
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75 | }
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76 |
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77 |
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78 | #define mempcpy(dest, src, len) \
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79 | ((__ssp_bos0 (dest) != (size_t) -1) \
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80 | ? __builtin___mempcpy_chk (dest, src, len, __ssp_bos0 (dest)) \
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81 | : __mempcpy_ichk (dest, src, len))
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82 | static inline __attribute__((__always_inline__)) void *
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83 | __mempcpy_ichk (void *__restrict__ __dest, const void *__restrict__ __src,
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84 | size_t __len)
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85 | {
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86 | return __builtin___mempcpy_chk (__dest, __src, __len, __ssp_bos0 (__dest));
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87 | }
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88 |
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89 |
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90 | #define memset(dest, ch, len) \
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91 | ((__ssp_bos0 (dest) != (size_t) -1) \
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92 | ? __builtin___memset_chk (dest, ch, len, __ssp_bos0 (dest)) \
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93 | : __memset_ichk (dest, ch, len))
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94 | static inline __attribute__((__always_inline__)) void *
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95 | __memset_ichk (void *__dest, int __ch, size_t __len)
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96 | {
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97 | return __builtin___memset_chk (__dest, __ch, __len, __ssp_bos0 (__dest));
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98 | }
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99 |
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100 | #define bcopy(src, dest, len) ((void) \
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101 | ((__ssp_bos0 (dest) != (size_t) -1) \
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102 | ? __builtin___memmove_chk (dest, src, len, __ssp_bos0 (dest)) \
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103 | : __memmove_ichk (dest, src, len)))
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104 | #define bzero(dest, len) ((void) \
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105 | ((__ssp_bos0 (dest) != (size_t) -1) \
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106 | ? __builtin___memset_chk (dest, '\0', len, __ssp_bos0 (dest)) \
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107 | : __memset_ichk (dest, '\0', len)))
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108 |
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109 |
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110 | #define strcpy(dest, src) \
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111 | ((__ssp_bos (dest) != (size_t) -1) \
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112 | ? __builtin___strcpy_chk (dest, src, __ssp_bos (dest)) \
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113 | : __strcpy_ichk (dest, src))
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114 | static inline __attribute__((__always_inline__)) char *
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115 | __strcpy_ichk (char *__restrict__ __dest, const char *__restrict__ __src)
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116 | {
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117 | return __builtin___strcpy_chk (__dest, __src, __ssp_bos (__dest));
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118 | }
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119 |
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120 |
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121 | #define stpcpy(dest, src) \
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122 | ((__ssp_bos (dest) != (size_t) -1) \
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123 | ? __builtin___stpcpy_chk (dest, src, __ssp_bos (dest)) \
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124 | : __stpcpy_ichk (dest, src))
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125 | static inline __attribute__((__always_inline__)) char *
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126 | __stpcpy_ichk (char *__restrict__ __dest, const char *__restrict__ __src)
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127 | {
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128 | return __builtin___stpcpy_chk (__dest, __src, __ssp_bos (__dest));
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129 | }
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130 |
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131 |
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132 | #define strncpy(dest, src, len) \
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133 | ((__ssp_bos (dest) != (size_t) -1) \
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134 | ? __builtin___strncpy_chk (dest, src, len, __ssp_bos (dest)) \
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135 | : __strncpy_ichk (dest, src, len))
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136 | static inline __attribute__((__always_inline__)) char *
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137 | __strncpy_ichk (char *__restrict__ __dest, const char *__restrict__ __src,
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138 | size_t __len)
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139 | {
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140 | return __builtin___strncpy_chk (__dest, __src, __len, __ssp_bos (__dest));
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141 | }
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142 |
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143 |
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144 | #define strcat(dest, src) \
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145 | ((__ssp_bos (dest) != (size_t) -1) \
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146 | ? __builtin___strcat_chk (dest, src, __ssp_bos (dest)) \
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147 | : __strcat_ichk (dest, src))
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148 | static inline __attribute__((__always_inline__)) char *
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149 | __strcat_ichk (char *__restrict__ __dest, const char *__restrict__ __src)
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150 | {
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151 | return __builtin___strcat_chk (__dest, __src, __ssp_bos (__dest));
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152 | }
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153 |
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154 |
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155 | #define strncat(dest, src, len) \
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156 | ((__ssp_bos (dest) != (size_t) -1) \
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157 | ? __builtin___strncat_chk (dest, src, len, __ssp_bos (dest)) \
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158 | : __strncat_ichk (dest, src, len))
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159 | static inline __attribute__((__always_inline__)) char *
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160 | __strncat_ichk (char *__restrict__ __dest, const char *__restrict__ __src,
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161 | size_t __len)
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162 | {
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163 | return __builtin___strncat_chk (__dest, __src, __len, __ssp_bos (__dest));
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164 | }
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165 |
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166 | #endif /* __SSP_FORTIFY_LEVEL > 0 */
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167 | #endif /* _SSP_STRING_H */
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