1 /* filemode.c -- make a string describing file modes
2 Copyright (C) 1985, 1990, 1993, 2004 Free Software Foundation, Inc.
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2, or (at your option)
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License along
15 with this program; if not, write to the Free Software Foundation, Inc.,
16 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
22 #include <sys/types.h>
27 # define S_IRUSR S_IREAD
29 # define S_IRUSR 00400
35 # define S_IWUSR S_IWRITE
37 # define S_IWUSR 00200
43 # define S_IXUSR S_IEXEC
45 # define S_IXUSR 00100
49 #ifdef STAT_MACROS_BROKEN
60 #endif /* STAT_MACROS_BROKEN. */
62 #if !defined(S_ISBLK) && defined(S_IFBLK)
63 #define S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK)
65 #if !defined(S_ISCHR) && defined(S_IFCHR)
66 #define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR)
68 #if !defined(S_ISDIR) && defined(S_IFDIR)
69 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
71 #if !defined(S_ISREG) && defined(S_IFREG)
72 #define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
74 #if !defined(S_ISFIFO) && defined(S_IFIFO)
75 #define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO)
77 #if !defined(S_ISLNK) && defined(S_IFLNK)
78 #define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK)
80 #if !defined(S_ISSOCK) && defined(S_IFSOCK)
81 #define S_ISSOCK(m) (((m) & S_IFMT) == S_IFSOCK)
83 #if !defined(S_ISMPB) && defined(S_IFMPB) /* V7 */
84 #define S_ISMPB(m) (((m) & S_IFMT) == S_IFMPB)
85 #define S_ISMPC(m) (((m) & S_IFMT) == S_IFMPC)
87 #if !defined(S_ISNWK) && defined(S_IFNWK) /* HP/UX */
88 #define S_ISNWK(m) (((m) & S_IFMT) == S_IFNWK)
91 /* Return a character indicating the type of file described by
94 'b' for block special files
95 'c' for character special files
96 'm' for multiplexor files
97 'l' for symbolic links
100 '-' for regular files
101 '?' for any other file type. */
139 /* Look at read, write, and execute bits in BITS and set
140 flags in CHARS accordingly. */
143 rwx (unsigned short bits, char *chars)
145 chars[0] = (bits & S_IRUSR) ? 'r' : '-';
146 chars[1] = (bits & S_IWUSR) ? 'w' : '-';
147 chars[2] = (bits & S_IXUSR) ? 'x' : '-';
150 /* Set the 's' and 't' flags in file attributes string CHARS,
151 according to the file mode BITS. */
154 setst (unsigned short bits, char *chars)
160 /* Set-uid, but not executable by owner. */
170 /* Set-gid, but not executable by group. */
180 /* Sticky, but not executable by others. */
188 /* Like filemodestring (see below), but only the relevant part of the
189 `struct stat' is given as an argument. */
192 mode_string (unsigned short mode, char *str)
194 str[0] = ftypelet ((long) mode);
195 rwx ((mode & 0700) << 0, &str[1]);
196 rwx ((mode & 0070) << 3, &str[4]);
197 rwx ((mode & 0007) << 6, &str[7]);
201 /* filemodestring - fill in string STR with an ls-style ASCII
202 representation of the st_mode field of file stats block STATP.
203 10 characters are stored in STR; no terminating null is added.
204 The characters stored in STR are:
206 0 File type. 'd' for directory, 'c' for character
207 special, 'b' for block special, 'm' for multiplex,
208 'l' for symbolic link, 's' for socket, 'p' for fifo,
209 '-' for regular, '?' for any other file type
211 1 'r' if the owner may read, '-' otherwise.
213 2 'w' if the owner may write, '-' otherwise.
215 3 'x' if the owner may execute, 's' if the file is
216 set-user-id, '-' otherwise.
217 'S' if the file is set-user-id, but the execute
220 4 'r' if group members may read, '-' otherwise.
222 5 'w' if group members may write, '-' otherwise.
224 6 'x' if group members may execute, 's' if the file is
225 set-group-id, '-' otherwise.
226 'S' if it is set-group-id but not executable.
228 7 'r' if any user may read, '-' otherwise.
230 8 'w' if any user may write, '-' otherwise.
232 9 'x' if any user may execute, 't' if the file is "sticky"
233 (will be retained in swap space after execution), '-'
235 'T' if the file is sticky but not executable. */
238 filemodestring (struct stat *statp, char *str)
240 mode_string (statp->st_mode, str);