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5217 | serge | 1 | /* filemode.c -- make a string describing file modes |
6324 | serge | 2 | Copyright (C) 1985-2015 Free Software Foundation, Inc. |
5217 | serge | 3 | |
4 | This program is free software; you can redistribute it and/or modify |
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5 | it under the terms of the GNU General Public License as published by |
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6 | the Free Software Foundation; either version 3, or (at your option) |
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7 | any later version. |
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8 | |||
9 | This program is distributed in the hope that it will be useful, |
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10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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12 | GNU General Public License for more details. |
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13 | |||
14 | You should have received a copy of the GNU General Public License |
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15 | along with this program; if not, write to the Free Software |
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16 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA |
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17 | 02110-1301, USA. */ |
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18 | |||
19 | #include "sysdep.h" |
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20 | #include "bfd.h" |
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21 | #include "bucomm.h" |
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22 | |||
23 | static char ftypelet (unsigned long); |
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24 | static void setst (unsigned long, char *); |
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25 | |||
26 | /* filemodestring - fill in string STR with an ls-style ASCII |
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27 | representation of the st_mode field of file stats block STATP. |
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28 | 10 characters are stored in STR; no terminating null is added. |
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29 | The characters stored in STR are: |
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30 | |||
31 | |||
32 | special, 'b' for block special, 'm' for multiplex, |
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33 | 'l' for symbolic link, 's' for socket, 'p' for fifo, |
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34 | '-' for any other file type |
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35 | |||
36 | 1 'r' if the owner may read, '-' otherwise. |
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37 | |||
38 | 2 'w' if the owner may write, '-' otherwise. |
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39 | |||
40 | 3 'x' if the owner may execute, 's' if the file is |
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41 | set-user-id, '-' otherwise. |
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42 | 'S' if the file is set-user-id, but the execute |
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43 | bit isn't set. |
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44 | |||
45 | 4 'r' if group members may read, '-' otherwise. |
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46 | |||
47 | 5 'w' if group members may write, '-' otherwise. |
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48 | |||
49 | 6 'x' if group members may execute, 's' if the file is |
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50 | set-group-id, '-' otherwise. |
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51 | 'S' if it is set-group-id but not executable. |
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52 | |||
53 | 7 'r' if any user may read, '-' otherwise. |
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54 | |||
55 | 8 'w' if any user may write, '-' otherwise. |
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56 | |||
57 | 9 'x' if any user may execute, 't' if the file is "sticky" |
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58 | (will be retained in swap space after execution), '-' |
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59 | otherwise. |
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60 | 'T' if the file is sticky but not executable. */ |
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61 | |||
62 | /* Get definitions for the file permission bits. */ |
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63 | |||
64 | #ifndef S_IRWXU |
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65 | #define S_IRWXU 0700 |
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66 | #endif |
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67 | #ifndef S_IRUSR |
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68 | #define S_IRUSR 0400 |
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69 | #endif |
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70 | #ifndef S_IWUSR |
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71 | #define S_IWUSR 0200 |
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72 | #endif |
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73 | #ifndef S_IXUSR |
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74 | #define S_IXUSR 0100 |
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75 | #endif |
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76 | |||
77 | #ifndef S_IRWXG |
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78 | #define S_IRWXG 0070 |
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79 | #endif |
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80 | #ifndef S_IRGRP |
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81 | #define S_IRGRP 0040 |
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82 | #endif |
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83 | #ifndef S_IWGRP |
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84 | #define S_IWGRP 0020 |
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85 | #endif |
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86 | #ifndef S_IXGRP |
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87 | #define S_IXGRP 0010 |
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88 | #endif |
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89 | |||
90 | #ifndef S_IRWXO |
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91 | #define S_IRWXO 0007 |
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92 | #endif |
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93 | #ifndef S_IROTH |
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94 | #define S_IROTH 0004 |
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95 | #endif |
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96 | #ifndef S_IWOTH |
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97 | #define S_IWOTH 0002 |
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98 | #endif |
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99 | #ifndef S_IXOTH |
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100 | #define S_IXOTH 0001 |
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101 | #endif |
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102 | |||
103 | /* Like filemodestring, but only the relevant part of the `struct stat' |
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104 | is given as an argument. */ |
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105 | |||
106 | void |
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107 | mode_string (unsigned long mode, char *str) |
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108 | { |
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109 | str[0] = ftypelet ((unsigned long) mode); |
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110 | str[1] = (mode & S_IRUSR) != 0 ? 'r' : '-'; |
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111 | str[2] = (mode & S_IWUSR) != 0 ? 'w' : '-'; |
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112 | str[3] = (mode & S_IXUSR) != 0 ? 'x' : '-'; |
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113 | str[4] = (mode & S_IRGRP) != 0 ? 'r' : '-'; |
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114 | str[5] = (mode & S_IWGRP) != 0 ? 'w' : '-'; |
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115 | str[6] = (mode & S_IXGRP) != 0 ? 'x' : '-'; |
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116 | str[7] = (mode & S_IROTH) != 0 ? 'r' : '-'; |
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117 | str[8] = (mode & S_IWOTH) != 0 ? 'w' : '-'; |
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118 | str[9] = (mode & S_IXOTH) != 0 ? 'x' : '-'; |
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119 | setst ((unsigned long) mode, str); |
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120 | } |
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121 | |||
122 | /* Return a character indicating the type of file described by |
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123 | file mode BITS: |
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124 | 'd' for directories |
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125 | 'b' for block special files |
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126 | 'c' for character special files |
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127 | 'm' for multiplexer files |
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128 | 'l' for symbolic links |
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129 | 's' for sockets |
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130 | 'p' for fifos |
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131 | '-' for any other file type. */ |
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132 | |||
133 | #ifndef S_ISDIR |
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134 | #ifdef S_IFDIR |
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135 | #define S_ISDIR(i) (((i) & S_IFMT) == S_IFDIR) |
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136 | #else /* ! defined (S_IFDIR) */ |
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137 | #define S_ISDIR(i) (((i) & 0170000) == 040000) |
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138 | #endif /* ! defined (S_IFDIR) */ |
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139 | #endif /* ! defined (S_ISDIR) */ |
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140 | |||
141 | #ifndef S_ISBLK |
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142 | #ifdef S_IFBLK |
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143 | #define S_ISBLK(i) (((i) & S_IFMT) == S_IFBLK) |
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144 | #else /* ! defined (S_IFBLK) */ |
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145 | #define S_ISBLK(i) 0 |
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146 | #endif /* ! defined (S_IFBLK) */ |
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147 | #endif /* ! defined (S_ISBLK) */ |
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148 | |||
149 | #ifndef S_ISCHR |
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150 | #ifdef S_IFCHR |
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151 | #define S_ISCHR(i) (((i) & S_IFMT) == S_IFCHR) |
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152 | #else /* ! defined (S_IFCHR) */ |
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153 | #define S_ISCHR(i) 0 |
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154 | #endif /* ! defined (S_IFCHR) */ |
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155 | #endif /* ! defined (S_ISCHR) */ |
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156 | |||
157 | #ifndef S_ISFIFO |
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158 | #ifdef S_IFIFO |
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159 | #define S_ISFIFO(i) (((i) & S_IFMT) == S_IFIFO) |
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160 | #else /* ! defined (S_IFIFO) */ |
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161 | #define S_ISFIFO(i) 0 |
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162 | #endif /* ! defined (S_IFIFO) */ |
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163 | #endif /* ! defined (S_ISFIFO) */ |
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164 | |||
165 | #ifndef S_ISSOCK |
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166 | #ifdef S_IFSOCK |
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167 | #define S_ISSOCK(i) (((i) & S_IFMT) == S_IFSOCK) |
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168 | #else /* ! defined (S_IFSOCK) */ |
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169 | #define S_ISSOCK(i) 0 |
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170 | #endif /* ! defined (S_IFSOCK) */ |
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171 | #endif /* ! defined (S_ISSOCK) */ |
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172 | |||
173 | #ifndef S_ISLNK |
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174 | #ifdef S_IFLNK |
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175 | #define S_ISLNK(i) (((i) & S_IFMT) == S_IFLNK) |
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176 | #else /* ! defined (S_IFLNK) */ |
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177 | #define S_ISLNK(i) 0 |
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178 | #endif /* ! defined (S_IFLNK) */ |
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179 | #endif /* ! defined (S_ISLNK) */ |
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180 | |||
181 | static char |
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182 | ftypelet (unsigned long bits) |
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183 | { |
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184 | if (S_ISDIR (bits)) |
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185 | return 'd'; |
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186 | if (S_ISLNK (bits)) |
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187 | return 'l'; |
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188 | if (S_ISBLK (bits)) |
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189 | return 'b'; |
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190 | if (S_ISCHR (bits)) |
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191 | return 'c'; |
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192 | if (S_ISSOCK (bits)) |
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193 | return 's'; |
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194 | if (S_ISFIFO (bits)) |
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195 | return 'p'; |
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196 | |||
197 | #ifdef S_IFMT |
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198 | #ifdef S_IFMPC |
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199 | if ((bits & S_IFMT) == S_IFMPC |
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200 | || (bits & S_IFMT) == S_IFMPB) |
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201 | return 'm'; |
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202 | #endif |
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203 | #ifdef S_IFNWK |
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204 | if ((bits & S_IFMT) == S_IFNWK) |
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205 | return 'n'; |
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206 | #endif |
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207 | #endif |
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208 | |||
209 | return '-'; |
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210 | } |
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211 | |||
212 | /* Set the 's' and 't' flags in file attributes string CHARS, |
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213 | according to the file mode BITS. */ |
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214 | |||
215 | static void |
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216 | setst (unsigned long bits ATTRIBUTE_UNUSED, char *chars ATTRIBUTE_UNUSED) |
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217 | { |
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218 | #ifdef S_ISUID |
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219 | if (bits & S_ISUID) |
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220 | { |
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221 | if (chars[3] != 'x') |
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222 | /* Set-uid, but not executable by owner. */ |
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223 | chars[3] = 'S'; |
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224 | else |
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225 | chars[3] = 's'; |
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226 | } |
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227 | #endif |
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228 | #ifdef S_ISGID |
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229 | if (bits & S_ISGID) |
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230 | { |
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231 | if (chars[6] != 'x') |
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232 | /* Set-gid, but not executable by group. */ |
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233 | chars[6] = 'S'; |
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234 | else |
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235 | chars[6] = 's'; |
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236 | } |
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237 | #endif |
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238 | #ifdef S_ISVTX |
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239 | if (bits & S_ISVTX) |
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240 | { |
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241 | if (chars[9] != 'x') |
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242 | /* Sticky, but not executable by others. */ |
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243 | chars[9] = 'T'; |
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244 | else |
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245 | chars[9] = 't'; |
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246 | } |
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247 | #endif |
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248 | } |