1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
|
/* filemode.c -- make a string describing file modes
Copyright (C) 1985, 1990, 1993, 1998-2000, 2004, 2006, 2009-2015 Free
Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include <config.h>
#include "filemode.h"
/* The following is for Cray DMF (Data Migration Facility), which is a
HSM file system. A migrated file has a 'st_dm_mode' that is
different from the normal 'st_mode', so any tests for migrated
files should use the former. */
#if HAVE_ST_DM_MODE
# define IS_MIGRATED_FILE(statp) \
(S_ISOFD (statp->st_dm_mode) || S_ISOFL (statp->st_dm_mode))
#else
# define IS_MIGRATED_FILE(statp) 0
#endif
#if ! HAVE_DECL_STRMODE
/* Return a character indicating the type of file described by
file mode BITS:
'-' regular file
'b' block special file
'c' character special file
'C' high performance ("contiguous data") file
'd' directory
'D' door
'l' symbolic link
'm' multiplexed file (7th edition Unix; obsolete)
'n' network special file (HP-UX)
'p' fifo (named pipe)
'P' port
's' socket
'w' whiteout (4.4BSD)
'?' some other file type */
static char
ftypelet (mode_t bits)
{
/* These are the most common, so test for them first. */
if (S_ISREG (bits))
return '-';
if (S_ISDIR (bits))
return 'd';
/* Other letters standardized by POSIX 1003.1-2004. */
if (S_ISBLK (bits))
return 'b';
if (S_ISCHR (bits))
return 'c';
if (S_ISLNK (bits))
return 'l';
if (S_ISFIFO (bits))
return 'p';
/* Other file types (though not letters) standardized by POSIX. */
if (S_ISSOCK (bits))
return 's';
/* Nonstandard file types. */
if (S_ISCTG (bits))
return 'C';
if (S_ISDOOR (bits))
return 'D';
if (S_ISMPB (bits) || S_ISMPC (bits) || S_ISMPX (bits))
return 'm';
if (S_ISNWK (bits))
return 'n';
if (S_ISPORT (bits))
return 'P';
if (S_ISWHT (bits))
return 'w';
return '?';
}
/* Like filemodestring, but rely only on MODE. */
void
strmode (mode_t mode, char *str)
{
str[0] = ftypelet (mode);
str[1] = mode & S_IRUSR ? 'r' : '-';
str[2] = mode & S_IWUSR ? 'w' : '-';
str[3] = (mode & S_ISUID
? (mode & S_IXUSR ? 's' : 'S')
: (mode & S_IXUSR ? 'x' : '-'));
str[4] = mode & S_IRGRP ? 'r' : '-';
str[5] = mode & S_IWGRP ? 'w' : '-';
str[6] = (mode & S_ISGID
? (mode & S_IXGRP ? 's' : 'S')
: (mode & S_IXGRP ? 'x' : '-'));
str[7] = mode & S_IROTH ? 'r' : '-';
str[8] = mode & S_IWOTH ? 'w' : '-';
str[9] = (mode & S_ISVTX
? (mode & S_IXOTH ? 't' : 'T')
: (mode & S_IXOTH ? 'x' : '-'));
str[10] = ' ';
str[11] = '\0';
}
#endif /* ! HAVE_DECL_STRMODE */
/* filemodestring - fill in string STR with an ls-style ASCII
representation of the st_mode field of file stats block STATP.
12 characters are stored in STR.
The characters stored in STR are:
0 File type, as in ftypelet above, except that other letters are used
for files whose type cannot be determined solely from st_mode:
'F' semaphore
'M' migrated file (Cray DMF)
'Q' message queue
'S' shared memory object
'T' typed memory object
1 'r' if the owner may read, '-' otherwise.
2 'w' if the owner may write, '-' otherwise.
3 'x' if the owner may execute, 's' if the file is
set-user-id, '-' otherwise.
'S' if the file is set-user-id, but the execute
bit isn't set.
4 'r' if group members may read, '-' otherwise.
5 'w' if group members may write, '-' otherwise.
6 'x' if group members may execute, 's' if the file is
set-group-id, '-' otherwise.
'S' if it is set-group-id but not executable.
7 'r' if any user may read, '-' otherwise.
8 'w' if any user may write, '-' otherwise.
9 'x' if any user may execute, 't' if the file is "sticky"
(will be retained in swap space after execution), '-'
otherwise.
'T' if the file is sticky but not executable.
10 ' ' for compatibility with 4.4BSD strmode,
since this interface does not support ACLs.
11 '\0'. */
void
filemodestring (struct stat const *statp, char *str)
{
strmode (statp->st_mode, str);
if (S_TYPEISSEM (statp))
str[0] = 'F';
else if (IS_MIGRATED_FILE (statp))
str[0] = 'M';
else if (S_TYPEISMQ (statp))
str[0] = 'Q';
else if (S_TYPEISSHM (statp))
str[0] = 'S';
else if (S_TYPEISTMO (statp))
str[0] = 'T';
}
|
