| 1 | /* filemode.c -- make a string describing file modes |
| 2 | Copyright 1985, 1990, 1991, 1994, 1995, 1997, 1999, 2002, 2003, 2005, |
| 3 | 2007 Free Software Foundation, Inc. |
| 4 | |
| 5 | This program is free software; you can redistribute it and/or modify |
| 6 | it under the terms of the GNU General Public License as published by |
| 7 | the Free Software Foundation; either version 3, or (at your option) |
| 8 | any later version. |
| 9 | |
| 10 | This program is distributed in the hope that it will be useful, |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | GNU General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU General Public License |
| 16 | along with this program; if not, write to the Free Software |
| 17 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA |
| 18 | 02110-1301, USA. */ |
| 19 | \f |
| 20 | #include "sysdep.h" |
| 21 | #include "bfd.h" |
| 22 | #include "bucomm.h" |
| 23 | |
| 24 | static char ftypelet (unsigned long); |
| 25 | static void setst (unsigned long, char *); |
| 26 | |
| 27 | /* filemodestring - fill in string STR with an ls-style ASCII |
| 28 | representation of the st_mode field of file stats block STATP. |
| 29 | 10 characters are stored in STR; no terminating null is added. |
| 30 | The characters stored in STR are: |
| 31 | |
| 32 | 0 File type. 'd' for directory, 'c' for character |
| 33 | special, 'b' for block special, 'm' for multiplex, |
| 34 | 'l' for symbolic link, 's' for socket, 'p' for fifo, |
| 35 | '-' for any other file type |
| 36 | |
| 37 | 1 'r' if the owner may read, '-' otherwise. |
| 38 | |
| 39 | 2 'w' if the owner may write, '-' otherwise. |
| 40 | |
| 41 | 3 'x' if the owner may execute, 's' if the file is |
| 42 | set-user-id, '-' otherwise. |
| 43 | 'S' if the file is set-user-id, but the execute |
| 44 | bit isn't set. |
| 45 | |
| 46 | 4 'r' if group members may read, '-' otherwise. |
| 47 | |
| 48 | 5 'w' if group members may write, '-' otherwise. |
| 49 | |
| 50 | 6 'x' if group members may execute, 's' if the file is |
| 51 | set-group-id, '-' otherwise. |
| 52 | 'S' if it is set-group-id but not executable. |
| 53 | |
| 54 | 7 'r' if any user may read, '-' otherwise. |
| 55 | |
| 56 | 8 'w' if any user may write, '-' otherwise. |
| 57 | |
| 58 | 9 'x' if any user may execute, 't' if the file is "sticky" |
| 59 | (will be retained in swap space after execution), '-' |
| 60 | otherwise. |
| 61 | 'T' if the file is sticky but not executable. */ |
| 62 | |
| 63 | /* Get definitions for the file permission bits. */ |
| 64 | |
| 65 | #ifndef S_IRWXU |
| 66 | #define S_IRWXU 0700 |
| 67 | #endif |
| 68 | #ifndef S_IRUSR |
| 69 | #define S_IRUSR 0400 |
| 70 | #endif |
| 71 | #ifndef S_IWUSR |
| 72 | #define S_IWUSR 0200 |
| 73 | #endif |
| 74 | #ifndef S_IXUSR |
| 75 | #define S_IXUSR 0100 |
| 76 | #endif |
| 77 | |
| 78 | #ifndef S_IRWXG |
| 79 | #define S_IRWXG 0070 |
| 80 | #endif |
| 81 | #ifndef S_IRGRP |
| 82 | #define S_IRGRP 0040 |
| 83 | #endif |
| 84 | #ifndef S_IWGRP |
| 85 | #define S_IWGRP 0020 |
| 86 | #endif |
| 87 | #ifndef S_IXGRP |
| 88 | #define S_IXGRP 0010 |
| 89 | #endif |
| 90 | |
| 91 | #ifndef S_IRWXO |
| 92 | #define S_IRWXO 0007 |
| 93 | #endif |
| 94 | #ifndef S_IROTH |
| 95 | #define S_IROTH 0004 |
| 96 | #endif |
| 97 | #ifndef S_IWOTH |
| 98 | #define S_IWOTH 0002 |
| 99 | #endif |
| 100 | #ifndef S_IXOTH |
| 101 | #define S_IXOTH 0001 |
| 102 | #endif |
| 103 | |
| 104 | /* Like filemodestring, but only the relevant part of the `struct stat' |
| 105 | is given as an argument. */ |
| 106 | |
| 107 | void |
| 108 | mode_string (unsigned long mode, char *str) |
| 109 | { |
| 110 | str[0] = ftypelet ((unsigned long) mode); |
| 111 | str[1] = (mode & S_IRUSR) != 0 ? 'r' : '-'; |
| 112 | str[2] = (mode & S_IWUSR) != 0 ? 'w' : '-'; |
| 113 | str[3] = (mode & S_IXUSR) != 0 ? 'x' : '-'; |
| 114 | str[4] = (mode & S_IRGRP) != 0 ? 'r' : '-'; |
| 115 | str[5] = (mode & S_IWGRP) != 0 ? 'w' : '-'; |
| 116 | str[6] = (mode & S_IXGRP) != 0 ? 'x' : '-'; |
| 117 | str[7] = (mode & S_IROTH) != 0 ? 'r' : '-'; |
| 118 | str[8] = (mode & S_IWOTH) != 0 ? 'w' : '-'; |
| 119 | str[9] = (mode & S_IXOTH) != 0 ? 'x' : '-'; |
| 120 | setst ((unsigned long) mode, str); |
| 121 | } |
| 122 | |
| 123 | /* Return a character indicating the type of file described by |
| 124 | file mode BITS: |
| 125 | 'd' for directories |
| 126 | 'b' for block special files |
| 127 | 'c' for character special files |
| 128 | 'm' for multiplexer files |
| 129 | 'l' for symbolic links |
| 130 | 's' for sockets |
| 131 | 'p' for fifos |
| 132 | '-' for any other file type. */ |
| 133 | |
| 134 | #ifndef S_ISDIR |
| 135 | #ifdef S_IFDIR |
| 136 | #define S_ISDIR(i) (((i) & S_IFMT) == S_IFDIR) |
| 137 | #else /* ! defined (S_IFDIR) */ |
| 138 | #define S_ISDIR(i) (((i) & 0170000) == 040000) |
| 139 | #endif /* ! defined (S_IFDIR) */ |
| 140 | #endif /* ! defined (S_ISDIR) */ |
| 141 | |
| 142 | #ifndef S_ISBLK |
| 143 | #ifdef S_IFBLK |
| 144 | #define S_ISBLK(i) (((i) & S_IFMT) == S_IFBLK) |
| 145 | #else /* ! defined (S_IFBLK) */ |
| 146 | #define S_ISBLK(i) 0 |
| 147 | #endif /* ! defined (S_IFBLK) */ |
| 148 | #endif /* ! defined (S_ISBLK) */ |
| 149 | |
| 150 | #ifndef S_ISCHR |
| 151 | #ifdef S_IFCHR |
| 152 | #define S_ISCHR(i) (((i) & S_IFMT) == S_IFCHR) |
| 153 | #else /* ! defined (S_IFCHR) */ |
| 154 | #define S_ISCHR(i) 0 |
| 155 | #endif /* ! defined (S_IFCHR) */ |
| 156 | #endif /* ! defined (S_ISCHR) */ |
| 157 | |
| 158 | #ifndef S_ISFIFO |
| 159 | #ifdef S_IFIFO |
| 160 | #define S_ISFIFO(i) (((i) & S_IFMT) == S_IFIFO) |
| 161 | #else /* ! defined (S_IFIFO) */ |
| 162 | #define S_ISFIFO(i) 0 |
| 163 | #endif /* ! defined (S_IFIFO) */ |
| 164 | #endif /* ! defined (S_ISFIFO) */ |
| 165 | |
| 166 | #ifndef S_ISSOCK |
| 167 | #ifdef S_IFSOCK |
| 168 | #define S_ISSOCK(i) (((i) & S_IFMT) == S_IFSOCK) |
| 169 | #else /* ! defined (S_IFSOCK) */ |
| 170 | #define S_ISSOCK(i) 0 |
| 171 | #endif /* ! defined (S_IFSOCK) */ |
| 172 | #endif /* ! defined (S_ISSOCK) */ |
| 173 | |
| 174 | #ifndef S_ISLNK |
| 175 | #ifdef S_IFLNK |
| 176 | #define S_ISLNK(i) (((i) & S_IFMT) == S_IFLNK) |
| 177 | #else /* ! defined (S_IFLNK) */ |
| 178 | #define S_ISLNK(i) 0 |
| 179 | #endif /* ! defined (S_IFLNK) */ |
| 180 | #endif /* ! defined (S_ISLNK) */ |
| 181 | |
| 182 | static char |
| 183 | ftypelet (unsigned long bits) |
| 184 | { |
| 185 | if (S_ISDIR (bits)) |
| 186 | return 'd'; |
| 187 | if (S_ISLNK (bits)) |
| 188 | return 'l'; |
| 189 | if (S_ISBLK (bits)) |
| 190 | return 'b'; |
| 191 | if (S_ISCHR (bits)) |
| 192 | return 'c'; |
| 193 | if (S_ISSOCK (bits)) |
| 194 | return 's'; |
| 195 | if (S_ISFIFO (bits)) |
| 196 | return 'p'; |
| 197 | |
| 198 | #ifdef S_IFMT |
| 199 | #ifdef S_IFMPC |
| 200 | if ((bits & S_IFMT) == S_IFMPC |
| 201 | || (bits & S_IFMT) == S_IFMPB) |
| 202 | return 'm'; |
| 203 | #endif |
| 204 | #ifdef S_IFNWK |
| 205 | if ((bits & S_IFMT) == S_IFNWK) |
| 206 | return 'n'; |
| 207 | #endif |
| 208 | #endif |
| 209 | |
| 210 | return '-'; |
| 211 | } |
| 212 | |
| 213 | /* Set the 's' and 't' flags in file attributes string CHARS, |
| 214 | according to the file mode BITS. */ |
| 215 | |
| 216 | static void |
| 217 | setst (unsigned long bits ATTRIBUTE_UNUSED, char *chars ATTRIBUTE_UNUSED) |
| 218 | { |
| 219 | #ifdef S_ISUID |
| 220 | if (bits & S_ISUID) |
| 221 | { |
| 222 | if (chars[3] != 'x') |
| 223 | /* Set-uid, but not executable by owner. */ |
| 224 | chars[3] = 'S'; |
| 225 | else |
| 226 | chars[3] = 's'; |
| 227 | } |
| 228 | #endif |
| 229 | #ifdef S_ISGID |
| 230 | if (bits & S_ISGID) |
| 231 | { |
| 232 | if (chars[6] != 'x') |
| 233 | /* Set-gid, but not executable by group. */ |
| 234 | chars[6] = 'S'; |
| 235 | else |
| 236 | chars[6] = 's'; |
| 237 | } |
| 238 | #endif |
| 239 | #ifdef S_ISVTX |
| 240 | if (bits & S_ISVTX) |
| 241 | { |
| 242 | if (chars[9] != 'x') |
| 243 | /* Sticky, but not executable by others. */ |
| 244 | chars[9] = 'T'; |
| 245 | else |
| 246 | chars[9] = 't'; |
| 247 | } |
| 248 | #endif |
| 249 | } |