Mercurial > hg > xemacs-beta
annotate src/filemode.c @ 5606:7c383c5784ed
Zero-terminate when passing strings to parse_integer(), lread.c
src/ChangeLog addition:
2011-12-03 Aidan Kehoe <kehoea@parhasard.net>
* lread.c (read1):
Zero-terminate what we're giving to parse_integer(), it needs it
if it's calling bignum_set_string().
| author | Aidan Kehoe <kehoea@parhasard.net> |
|---|---|
| date | Sat, 03 Dec 2011 15:55:14 +0000 |
| parents | 308d34e9f07d |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* filemode.c -- make a string describing file modes |
| 2 Copyright (C) 1985, 1990, 1993 Free Software Foundation, Inc. | |
| 3 | |
| 4 This file is part of XEmacs. | |
| 5 | |
|
5402
308d34e9f07d
Changed bulk of GPLv2 or later files identified by script
Mats Lidell <matsl@xemacs.org>
parents:
2286
diff
changeset
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6 XEmacs is free software: you can redistribute it and/or modify it |
| 0 | 7 under the terms of the GNU General Public License as published by the |
|
5402
308d34e9f07d
Changed bulk of GPLv2 or later files identified by script
Mats Lidell <matsl@xemacs.org>
parents:
2286
diff
changeset
|
8 Free Software Foundation, either version 3 of the License, or (at your |
|
308d34e9f07d
Changed bulk of GPLv2 or later files identified by script
Mats Lidell <matsl@xemacs.org>
parents:
2286
diff
changeset
|
9 option) any later version. |
| 0 | 10 |
| 11 XEmacs is distributed in the hope that it will be useful, but WITHOUT | |
| 12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 14 for more details. | |
| 15 | |
| 16 You should have received a copy of the GNU General Public License | |
|
5402
308d34e9f07d
Changed bulk of GPLv2 or later files identified by script
Mats Lidell <matsl@xemacs.org>
parents:
2286
diff
changeset
|
17 along with XEmacs. If not, see <http://www.gnu.org/licenses/>. */ |
| 0 | 18 |
| 19 /* Synched up with: FSF 19.30. */ | |
| 20 | |
| 21 #include <config.h> | |
| 22 #include "lisp.h" | |
| 23 | |
| 24 #include "sysfile.h" | |
| 25 | |
| 26 static void mode_string (unsigned short mode, char *str); | |
| 27 static char ftypelet (mode_t bits); | |
| 28 static void rwx (unsigned short bits, char *chars); | |
| 29 static void setst (unsigned short bits, char *chars); | |
| 30 | |
| 1467 | 31 /* declared in "sysfile.h" |
| 32 | |
| 33 filemodestring - fill in string STR with an ls-style ASCII | |
| 0 | 34 representation of the st_mode field of file stats block STATP. |
| 35 10 characters are stored in STR; no terminating null is added. | |
| 36 The characters stored in STR are: | |
| 37 | |
| 38 0 File type. 'd' for directory, 'c' for character | |
| 39 special, 'b' for block special, 'm' for multiplex, | |
| 40 'l' for symbolic link, 's' for socket, 'p' for fifo, | |
| 41 '-' for regular, '?' for any other file type | |
| 42 | |
| 43 1 'r' if the owner may read, '-' otherwise. | |
| 44 | |
| 45 2 'w' if the owner may write, '-' otherwise. | |
| 46 | |
| 47 3 'x' if the owner may execute, 's' if the file is | |
| 48 set-user-id, '-' otherwise. | |
| 49 'S' if the file is set-user-id, but the execute | |
| 50 bit isn't set. | |
| 51 | |
| 52 4 'r' if group members may read, '-' otherwise. | |
| 53 | |
| 54 5 'w' if group members may write, '-' otherwise. | |
| 55 | |
| 56 6 'x' if group members may execute, 's' if the file is | |
| 57 set-group-id, '-' otherwise. | |
| 58 'S' if it is set-group-id but not executable. | |
| 59 | |
| 60 7 'r' if any user may read, '-' otherwise. | |
| 61 | |
| 62 8 'w' if any user may write, '-' otherwise. | |
| 63 | |
| 64 9 'x' if any user may execute, 't' if the file is "sticky" | |
| 65 (will be retained in swap space after execution), '-' | |
| 66 otherwise. | |
| 67 'T' if the file is sticky but not executable. */ | |
| 68 | |
| 69 void | |
| 70 filemodestring (struct stat *statp, char *str) | |
| 71 { | |
| 72 mode_string (statp->st_mode, str); | |
| 73 } | |
| 74 | |
| 75 /* Like filemodestring, but only the relevant part of the `struct stat' | |
| 76 is given as an argument. */ | |
| 77 | |
| 78 static void | |
| 79 mode_string (unsigned short mode, char *str) | |
| 80 { | |
| 81 str[0] = ftypelet (mode); | |
| 404 | 82 rwx ((unsigned short) ((mode & 0700) << 0), &str[1]); |
| 83 rwx ((unsigned short) ((mode & 0070) << 3), &str[4]); | |
| 84 rwx ((unsigned short) ((mode & 0007) << 6), &str[7]); | |
| 0 | 85 setst (mode, str); |
| 86 } | |
| 87 | |
| 88 /* Return a character indicating the type of file described by | |
| 89 file mode BITS: | |
| 90 'd' for directories | |
| 91 'b' for block special files | |
| 92 'c' for character special files | |
| 93 'm' for multiplexor files | |
| 94 'l' for symbolic links | |
| 95 's' for sockets | |
| 96 'p' for fifos | |
| 97 '-' for regular files | |
| 98 '?' for any other file type. */ | |
| 99 | |
| 100 static char | |
| 101 ftypelet (mode_t bits) | |
| 102 { | |
| 103 #ifdef S_ISBLK | |
| 104 if (S_ISBLK (bits)) | |
| 105 return 'b'; | |
| 106 #endif | |
| 107 if (S_ISCHR (bits)) | |
| 108 return 'c'; | |
| 109 if (S_ISDIR (bits)) | |
| 110 return 'd'; | |
| 111 if (S_ISREG (bits)) | |
| 112 return '-'; | |
| 113 #ifdef S_ISFIFO | |
| 114 if (S_ISFIFO (bits)) | |
| 115 return 'p'; | |
| 116 #endif | |
| 117 #ifdef S_ISLNK | |
| 118 if (S_ISLNK (bits)) | |
| 119 return 'l'; | |
| 120 #endif | |
| 121 #ifdef S_ISSOCK | |
| 122 if (S_ISSOCK (bits)) | |
| 123 return 's'; | |
| 124 #endif | |
| 125 #ifdef S_ISMPC | |
| 126 if (S_ISMPC (bits)) | |
| 127 return 'm'; | |
| 128 #endif | |
| 129 #ifdef S_ISNWK | |
| 130 if (S_ISNWK (bits)) | |
| 131 return 'n'; | |
| 132 #endif | |
| 133 return '?'; | |
| 134 } | |
| 135 | |
| 136 /* Look at read, write, and execute bits in BITS and set | |
| 137 flags in CHARS accordingly. */ | |
| 138 | |
| 139 static void | |
| 140 rwx (unsigned short bits, char *chars) | |
| 141 { | |
| 142 chars[0] = (bits & S_IRUSR) ? 'r' : '-'; | |
| 143 chars[1] = (bits & S_IWUSR) ? 'w' : '-'; | |
| 144 chars[2] = (bits & S_IXUSR) ? 'x' : '-'; | |
| 145 } | |
| 146 | |
| 147 /* Set the 's' and 't' flags in file attributes string CHARS, | |
| 148 according to the file mode BITS. */ | |
| 149 | |
| 150 static void | |
| 2286 | 151 setst ( |
| 152 #if defined(S_ISUID) || defined(S_ISGID) || defined(S_ISVTX) | |
| 153 unsigned short bits, char *chars | |
| 154 #else | |
| 155 unsigned short UNUSED (bits), char *UNUSED (chars) | |
| 156 #endif | |
| 157 ) | |
| 0 | 158 { |
| 159 #ifdef S_ISUID | |
| 160 if (bits & S_ISUID) | |
| 161 { | |
| 162 if (chars[3] != 'x') | |
| 163 /* Set-uid, but not executable by owner. */ | |
| 164 chars[3] = 'S'; | |
| 165 else | |
| 166 chars[3] = 's'; | |
| 167 } | |
| 168 #endif | |
| 169 #ifdef S_ISGID | |
| 170 if (bits & S_ISGID) | |
| 171 { | |
| 172 if (chars[6] != 'x') | |
| 173 /* Set-gid, but not executable by group. */ | |
| 174 chars[6] = 'S'; | |
| 175 else | |
| 176 chars[6] = 's'; | |
| 177 } | |
| 178 #endif | |
| 179 #ifdef S_ISVTX | |
| 180 if (bits & S_ISVTX) | |
| 181 { | |
| 182 if (chars[9] != 'x') | |
| 183 /* Sticky, but not executable by others. */ | |
| 184 chars[9] = 'T'; | |
| 185 else | |
| 186 chars[9] = 't'; | |
| 187 } | |
| 188 #endif | |
| 189 } |