| 1 | /* filemode.c -- make a string describing file modes |
| 2 | Copyright (C) 1985, 1990, 1993, 2001, 2002, 2003, 2004, |
| 3 | 2005, 2006, 2007, 2008 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 02110-1301, |
| 18 | USA. */ |
| 19 | \f |
| 20 | #ifdef HAVE_CONFIG_H |
| 21 | #include <config.h> |
| 22 | #endif |
| 23 | |
| 24 | #include <sys/types.h> |
| 25 | #include <sys/stat.h> |
| 26 | |
| 27 | #if !S_IRUSR |
| 28 | # if S_IREAD |
| 29 | # define S_IRUSR S_IREAD |
| 30 | # else |
| 31 | # define S_IRUSR 00400 |
| 32 | # endif |
| 33 | #endif |
| 34 | |
| 35 | #if !S_IWUSR |
| 36 | # if S_IWRITE |
| 37 | # define S_IWUSR S_IWRITE |
| 38 | # else |
| 39 | # define S_IWUSR 00200 |
| 40 | # endif |
| 41 | #endif |
| 42 | |
| 43 | #if !S_IXUSR |
| 44 | # if S_IEXEC |
| 45 | # define S_IXUSR S_IEXEC |
| 46 | # else |
| 47 | # define S_IXUSR 00100 |
| 48 | # endif |
| 49 | #endif |
| 50 | |
| 51 | #ifdef STAT_MACROS_BROKEN |
| 52 | #undef S_ISBLK |
| 53 | #undef S_ISCHR |
| 54 | #undef S_ISDIR |
| 55 | #undef S_ISFIFO |
| 56 | #undef S_ISLNK |
| 57 | #undef S_ISMPB |
| 58 | #undef S_ISMPC |
| 59 | #undef S_ISNWK |
| 60 | #undef S_ISREG |
| 61 | #undef S_ISSOCK |
| 62 | #endif /* STAT_MACROS_BROKEN. */ |
| 63 | |
| 64 | #if !defined(S_ISBLK) && defined(S_IFBLK) |
| 65 | #define S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK) |
| 66 | #endif |
| 67 | #if !defined(S_ISCHR) && defined(S_IFCHR) |
| 68 | #define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR) |
| 69 | #endif |
| 70 | #if !defined(S_ISDIR) && defined(S_IFDIR) |
| 71 | #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR) |
| 72 | #endif |
| 73 | #if !defined(S_ISREG) && defined(S_IFREG) |
| 74 | #define S_ISREG(m) (((m) & S_IFMT) == S_IFREG) |
| 75 | #endif |
| 76 | #if !defined(S_ISFIFO) && defined(S_IFIFO) |
| 77 | #define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO) |
| 78 | #endif |
| 79 | #if !defined(S_ISLNK) && defined(S_IFLNK) |
| 80 | #define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK) |
| 81 | #endif |
| 82 | #if !defined(S_ISSOCK) && defined(S_IFSOCK) |
| 83 | #define S_ISSOCK(m) (((m) & S_IFMT) == S_IFSOCK) |
| 84 | #endif |
| 85 | #if !defined(S_ISMPB) && defined(S_IFMPB) /* V7 */ |
| 86 | #define S_ISMPB(m) (((m) & S_IFMT) == S_IFMPB) |
| 87 | #define S_ISMPC(m) (((m) & S_IFMT) == S_IFMPC) |
| 88 | #endif |
| 89 | #if !defined(S_ISNWK) && defined(S_IFNWK) /* HP/UX */ |
| 90 | #define S_ISNWK(m) (((m) & S_IFMT) == S_IFNWK) |
| 91 | #endif |
| 92 | |
| 93 | void mode_string (); |
| 94 | static char ftypelet (); |
| 95 | static void rwx (); |
| 96 | static void setst (); |
| 97 | |
| 98 | /* filemodestring - fill in string STR with an ls-style ASCII |
| 99 | representation of the st_mode field of file stats block STATP. |
| 100 | 10 characters are stored in STR; no terminating null is added. |
| 101 | The characters stored in STR are: |
| 102 | |
| 103 | 0 File type. 'd' for directory, 'c' for character |
| 104 | special, 'b' for block special, 'm' for multiplex, |
| 105 | 'l' for symbolic link, 's' for socket, 'p' for fifo, |
| 106 | '-' for regular, '?' for any other file type |
| 107 | |
| 108 | 1 'r' if the owner may read, '-' otherwise. |
| 109 | |
| 110 | 2 'w' if the owner may write, '-' otherwise. |
| 111 | |
| 112 | 3 'x' if the owner may execute, 's' if the file is |
| 113 | set-user-id, '-' otherwise. |
| 114 | 'S' if the file is set-user-id, but the execute |
| 115 | bit isn't set. |
| 116 | |
| 117 | 4 'r' if group members may read, '-' otherwise. |
| 118 | |
| 119 | 5 'w' if group members may write, '-' otherwise. |
| 120 | |
| 121 | 6 'x' if group members may execute, 's' if the file is |
| 122 | set-group-id, '-' otherwise. |
| 123 | 'S' if it is set-group-id but not executable. |
| 124 | |
| 125 | 7 'r' if any user may read, '-' otherwise. |
| 126 | |
| 127 | 8 'w' if any user may write, '-' otherwise. |
| 128 | |
| 129 | 9 'x' if any user may execute, 't' if the file is "sticky" |
| 130 | (will be retained in swap space after execution), '-' |
| 131 | otherwise. |
| 132 | 'T' if the file is sticky but not executable. */ |
| 133 | |
| 134 | void |
| 135 | filemodestring (statp, str) |
| 136 | struct stat *statp; |
| 137 | char *str; |
| 138 | { |
| 139 | mode_string (statp->st_mode, str); |
| 140 | } |
| 141 | |
| 142 | /* Like filemodestring, but only the relevant part of the `struct stat' |
| 143 | is given as an argument. */ |
| 144 | |
| 145 | void |
| 146 | mode_string (mode, str) |
| 147 | unsigned short mode; |
| 148 | char *str; |
| 149 | { |
| 150 | str[0] = ftypelet ((long) mode); |
| 151 | rwx ((mode & 0700) << 0, &str[1]); |
| 152 | rwx ((mode & 0070) << 3, &str[4]); |
| 153 | rwx ((mode & 0007) << 6, &str[7]); |
| 154 | setst (mode, str); |
| 155 | } |
| 156 | |
| 157 | /* Return a character indicating the type of file described by |
| 158 | file mode BITS: |
| 159 | 'd' for directories |
| 160 | 'b' for block special files |
| 161 | 'c' for character special files |
| 162 | 'm' for multiplexor files |
| 163 | 'l' for symbolic links |
| 164 | 's' for sockets |
| 165 | 'p' for fifos |
| 166 | '-' for regular files |
| 167 | '?' for any other file type. */ |
| 168 | |
| 169 | static char |
| 170 | ftypelet (bits) |
| 171 | long bits; |
| 172 | { |
| 173 | #ifdef S_ISBLK |
| 174 | if (S_ISBLK (bits)) |
| 175 | return 'b'; |
| 176 | #endif |
| 177 | if (S_ISCHR (bits)) |
| 178 | return 'c'; |
| 179 | if (S_ISDIR (bits)) |
| 180 | return 'd'; |
| 181 | if (S_ISREG (bits)) |
| 182 | return '-'; |
| 183 | #ifdef S_ISFIFO |
| 184 | if (S_ISFIFO (bits)) |
| 185 | return 'p'; |
| 186 | #endif |
| 187 | #ifdef S_ISLNK |
| 188 | if (S_ISLNK (bits)) |
| 189 | return 'l'; |
| 190 | #endif |
| 191 | #ifdef S_ISSOCK |
| 192 | if (S_ISSOCK (bits)) |
| 193 | return 's'; |
| 194 | #endif |
| 195 | #ifdef S_ISMPC |
| 196 | if (S_ISMPC (bits)) |
| 197 | return 'm'; |
| 198 | #endif |
| 199 | #ifdef S_ISNWK |
| 200 | if (S_ISNWK (bits)) |
| 201 | return 'n'; |
| 202 | #endif |
| 203 | return '?'; |
| 204 | } |
| 205 | |
| 206 | /* Look at read, write, and execute bits in BITS and set |
| 207 | flags in CHARS accordingly. */ |
| 208 | |
| 209 | static void |
| 210 | rwx (bits, chars) |
| 211 | unsigned short bits; |
| 212 | char *chars; |
| 213 | { |
| 214 | chars[0] = (bits & S_IRUSR) ? 'r' : '-'; |
| 215 | chars[1] = (bits & S_IWUSR) ? 'w' : '-'; |
| 216 | chars[2] = (bits & S_IXUSR) ? 'x' : '-'; |
| 217 | } |
| 218 | |
| 219 | /* Set the 's' and 't' flags in file attributes string CHARS, |
| 220 | according to the file mode BITS. */ |
| 221 | |
| 222 | static void |
| 223 | setst (bits, chars) |
| 224 | unsigned short bits; |
| 225 | char *chars; |
| 226 | { |
| 227 | #ifdef S_ISUID |
| 228 | if (bits & S_ISUID) |
| 229 | { |
| 230 | if (chars[3] != 'x') |
| 231 | /* Set-uid, but not executable by owner. */ |
| 232 | chars[3] = 'S'; |
| 233 | else |
| 234 | chars[3] = 's'; |
| 235 | } |
| 236 | #endif |
| 237 | #ifdef S_ISGID |
| 238 | if (bits & S_ISGID) |
| 239 | { |
| 240 | if (chars[6] != 'x') |
| 241 | /* Set-gid, but not executable by group. */ |
| 242 | chars[6] = 'S'; |
| 243 | else |
| 244 | chars[6] = 's'; |
| 245 | } |
| 246 | #endif |
| 247 | #ifdef S_ISVTX |
| 248 | if (bits & S_ISVTX) |
| 249 | { |
| 250 | if (chars[9] != 'x') |
| 251 | /* Sticky, but not executable by others. */ |
| 252 | chars[9] = 'T'; |
| 253 | else |
| 254 | chars[9] = 't'; |
| 255 | } |
| 256 | #endif |
| 257 | } |
| 258 | |
| 259 | /* arch-tag: 4340830c-15a5-47d2-b45f-1d43c45a91bb |
| 260 | (do not change this comment) */ |