1 /* vi: set sw=4 ts=4: */
3 * mode_string implementation for busybox
5 * Copyright (C) 2003 Manuel Novoa III <mjn3@codepoet.org>
7 * Licensed under GPLv2 or later, see file LICENSE in this source tree.
11 * Fix a bug reported by junkio@cox.net involving the mode_chars index.
20 #if ( S_ISUID != 04000 ) || ( S_ISGID != 02000 ) || ( S_ISVTX != 01000 ) \
21 || ( S_IRUSR != 00400 ) || ( S_IWUSR != 00200 ) || ( S_IXUSR != 00100 ) \
22 || ( S_IRGRP != 00040 ) || ( S_IWGRP != 00020 ) || ( S_IXGRP != 00010 ) \
23 || ( S_IROTH != 00004 ) || ( S_IWOTH != 00002 ) || ( S_IXOTH != 00001 )
24 #error permission bitflag value assumption(s) violated!
27 #if ( S_IFSOCK!= 0140000 ) || ( S_IFLNK != 0120000 ) \
28 || ( S_IFREG != 0100000 ) || ( S_IFBLK != 0060000 ) \
29 || ( S_IFDIR != 0040000 ) || ( S_IFCHR != 0020000 ) \
30 || ( S_IFIFO != 0010000 )
31 #warning mode type bitflag value assumption(s) violated! falling back to larger version
33 #if (S_IRWXU | S_IRWXG | S_IRWXO | S_ISUID | S_ISGID | S_ISVTX) == 07777
35 #define mode_t unsigned short
38 static const mode_t mode_flags
[] = {
39 S_IRUSR
, S_IWUSR
, S_IXUSR
, S_ISUID
,
40 S_IRGRP
, S_IWGRP
, S_IXGRP
, S_ISGID
,
41 S_IROTH
, S_IWOTH
, S_IXOTH
, S_ISVTX
44 /* The static const char arrays below are duplicated for the two cases
45 * because moving them ahead of the mode_flags declaration cause a text
46 * size increase with the gcc version I'm using. */
48 /* The previous version used "0pcCd?bB-?l?s???". However, the '0', 'C',
49 * and 'B' types don't appear to be available on linux. So I removed them. */
50 static const char type_chars
[16] ALIGN1
= "?pc?d?b?-?l?s???";
51 /***************************************** 0123456789abcdef */
52 static const char mode_chars
[7] ALIGN1
= "rwxSTst";
54 const char* FAST_FUNC
bb_mode_string(mode_t mode
)
61 *p
= type_chars
[ (mode
>> 12) & 0xf ];
67 if (mode
& mode_flags
[i
+j
]) {
72 if (mode
& mode_flags
[i
+j
]) {
73 *p
= mode_chars
[3 + (k
& 2) + ((i
&8) >> 3)];
78 /* Note: We don't bother with nul termination because bss initialization
79 * should have taken care of that for us. If the user scribbled in buf
80 * memory, they deserve whatever happens. But we'll at least assert. */
88 /* The previous version used "0pcCd?bB-?l?s???". However, the '0', 'C',
89 * and 'B' types don't appear to be available on linux. So I removed them. */
90 static const char type_chars
[16] ALIGN1
= "?pc?d?b?-?l?s???";
91 /********************************** 0123456789abcdef */
92 static const char mode_chars
[7] ALIGN1
= "rwxSTst";
94 const char* FAST_FUNC
bb_mode_string(mode_t mode
)
101 *p
= type_chars
[ (mode
>> 12) & 0xf ];
115 if (mode
& (010000 >> i
)) {
116 *p
= mode_chars
[3 + (k
& 2) + (i
== 3)];
120 /* Note: We don't bother with nul termination because bss initialization
121 * should have taken care of that for us. If the user scribbled in buf
122 * memory, they deserve whatever happens. But we'll at least assert. */
123 assert(buf
[10] == 0);