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8
9#include <assert.h>
10#include "libbb.h"
11
12#if ( S_ISUID != 04000 ) || ( S_ISGID != 02000 ) || ( S_ISVTX != 01000 ) \
13 || ( S_IRUSR != 00400 ) || ( S_IWUSR != 00200 ) || ( S_IXUSR != 00100 ) \
14 || ( S_IRGRP != 00040 ) || ( S_IWGRP != 00020 ) || ( S_IXGRP != 00010 ) \
15 || ( S_IROTH != 00004 ) || ( S_IWOTH != 00002 ) || ( S_IXOTH != 00001 )
16#error permission bitflag value assumption(s) violated!
17#endif
18
19#if ( S_IFSOCK!= 0140000 ) || ( S_IFLNK != 0120000 ) \
20 || ( S_IFREG != 0100000 ) || ( S_IFBLK != 0060000 ) \
21 || ( S_IFDIR != 0040000 ) || ( S_IFCHR != 0020000 ) \
22 || ( S_IFIFO != 0010000 )
23#warning mode type bitflag value assumption(s) violated! falling back to larger version
24
25#if (S_IRWXU | S_IRWXG | S_IRWXO | S_ISUID | S_ISGID | S_ISVTX) == 07777
26#undef mode_t
27#define mode_t unsigned short
28#endif
29
30static const mode_t mode_flags[] ALIGN4 = {
31 S_IRUSR, S_IWUSR, S_IXUSR, S_ISUID,
32 S_IRGRP, S_IWGRP, S_IXGRP, S_ISGID,
33 S_IROTH, S_IWOTH, S_IXOTH, S_ISVTX
34};
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36
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38
39
40
41
42static const char type_chars[16] ALIGN1 = "?pc?d?b?-?l?s???";
43
44static const char mode_chars[7] ALIGN1 = "rwxSTst";
45
46const char* FAST_FUNC bb_mode_string(mode_t mode)
47{
48 static char buf[12];
49 char *p = buf;
50
51 int i, j, k;
52
53 *p = type_chars[ (mode >> 12) & 0xf ];
54 i = 0;
55 do {
56 j = k = 0;
57 do {
58 *++p = '-';
59 if (mode & mode_flags[i+j]) {
60 *p = mode_chars[j];
61 k = j;
62 }
63 } while (++j < 3);
64 if (mode & mode_flags[i+j]) {
65 *p = mode_chars[3 + (k & 2) + ((i&8) >> 3)];
66 }
67 i += 4;
68 } while (i < 12);
69
70
71
72
73 assert(buf[10] == 0);
74
75 return buf;
76}
77
78#else
79
80
81
82static const char type_chars[16] ALIGN1 = "?pc?d?b?-?l?s???";
83
84static const char mode_chars[7] ALIGN1 = "rwxSTst";
85
86const char* FAST_FUNC bb_mode_string(mode_t mode)
87{
88 static char buf[12];
89 char *p = buf;
90
91 int i, j, k, m;
92
93 *p = type_chars[ (mode >> 12) & 0xf ];
94 i = 0;
95 m = 0400;
96 do {
97 j = k = 0;
98 do {
99 *++p = '-';
100 if (mode & m) {
101 *p = mode_chars[j];
102 k = j;
103 }
104 m >>= 1;
105 } while (++j < 3);
106 ++i;
107 if (mode & (010000 >> i)) {
108 *p = mode_chars[3 + (k & 2) + (i == 3)];
109 }
110 } while (i < 3);
111
112
113
114
115 assert(buf[10] == 0);
116
117 return buf;
118}
119
120#endif
121