2 * mode_string implementation for busybox
4 * Copyright (C) 2003 Manuel Novoa III <mjn3@codepoet.org>
6 * SPDX-License-Identifier: GPL-2.0+
10 * Fix a bug reported by junkio@cox.net involving the mode_chars index.
15 #include <linux/stat.h>
17 #if ( S_ISUID != 04000 ) || ( S_ISGID != 02000 ) || ( S_ISVTX != 01000 ) \
18 || ( S_IRUSR != 00400 ) || ( S_IWUSR != 00200 ) || ( S_IXUSR != 00100 ) \
19 || ( S_IRGRP != 00040 ) || ( S_IWGRP != 00020 ) || ( S_IXGRP != 00010 ) \
20 || ( S_IROTH != 00004 ) || ( S_IWOTH != 00002 ) || ( S_IXOTH != 00001 )
21 #error permission bitflag value assumption(s) violated!
24 #if ( S_IFSOCK!= 0140000 ) || ( S_IFLNK != 0120000 ) \
25 || ( S_IFREG != 0100000 ) || ( S_IFBLK != 0060000 ) \
26 || ( S_IFDIR != 0040000 ) || ( S_IFCHR != 0020000 ) \
27 || ( S_IFIFO != 0010000 )
28 #warning mode type bitflag value assumption(s) violated! falling back to larger version
30 #if (S_IRWXU | S_IRWXG | S_IRWXO | S_ISUID | S_ISGID | S_ISVTX) == 07777
32 #define mode_t unsigned short
35 static const mode_t mode_flags[] = {
36 S_IRUSR, S_IWUSR, S_IXUSR, S_ISUID,
37 S_IRGRP, S_IWGRP, S_IXGRP, S_ISGID,
38 S_IROTH, S_IWOTH, S_IXOTH, S_ISVTX
41 /* The static const char arrays below are duplicated for the two cases
42 * because moving them ahead of the mode_flags declaration cause a text
43 * size increase with the gcc version I'm using. */
45 /* The previous version used "0pcCd?bB-?l?s???". However, the '0', 'C',
46 * and 'B' types don't appear to be available on linux. So I removed them. */
47 static const char type_chars[16] = "?pc?d?b?-?l?s???";
48 /* 0123456789abcdef */
49 static const char mode_chars[7] = "rwxSTst";
51 const char *bb_mode_string(int mode)
58 *p = type_chars[ (mode >> 12) & 0xf ];
64 if (mode & mode_flags[i+j]) {
69 if (mode & mode_flags[i+j]) {
70 *p = mode_chars[3 + (k & 2) + ((i&8) >> 3)];
75 /* Note: We don't bother with nul termination because bss initialization
76 * should have taken care of that for us. If the user scribbled in buf
77 * memory, they deserve whatever happens. But we'll at least assert. */
78 if (buf[10] != 0) return NULL;
85 /* The previous version used "0pcCd?bB-?l?s???". However, the '0', 'C',
86 * and 'B' types don't appear to be available on linux. So I removed them. */
87 static const char type_chars[16] = "?pc?d?b?-?l?s???";
88 /* 0123456789abcdef */
89 static const char mode_chars[7] = "rwxSTst";
91 const char *bb_mode_string(int mode)
98 *p = type_chars[ (mode >> 12) & 0xf ];
112 if (mode & (010000 >> i)) {
113 *p = mode_chars[3 + (k & 2) + (i == 3)];
117 /* Note: We don't bother with nul termination because bss initialization
118 * should have taken care of that for us. If the user scribbled in buf
119 * memory, they deserve whatever happens. But we'll at least assert. */
120 if (buf[10] != 0) return NULL;