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| author | Denys Vlasenko | 2021-09-17 17:10:38 +0200 |
|---|---|---|
| committer | Denys Vlasenko | 2021-09-17 17:10:38 +0200 |
| commit | 6279aec03d4677424408a515a57aa83664b81311 (patch) | |
| tree | cd45810d883981cb1b7337e27a41c3430988aa30 | |
| parent | 3a65435eaa845d45bbea176701726f27a88e8498 (diff) | |
| download | busybox-6279aec03d4677424408a515a57aa83664b81311.zip busybox-6279aec03d4677424408a515a57aa83664b81311.tar.gz | |
libbb: clarify what bb_mode_string() generates
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
| -rw-r--r-- | coreutils/ls.c | 2 | ||||
| -rw-r--r-- | include/libbb.h | 5 | ||||
| -rw-r--r-- | libbb/mode_string.c | 20 |
3 files changed, 12 insertions, 15 deletions
diff --git a/coreutils/ls.c b/coreutils/ls.c index 9a1264e..48f5eb4 100644 --- a/coreutils/ls.c +++ b/coreutils/ls.c @@ -504,7 +504,7 @@ static NOINLINE unsigned display_single(const struct dnode *dn) if (opt & OPT_l) { /* long listing: show mode */ char modestr[12]; - column += printf("%-10s ", (char *) bb_mode_string(modestr, dn->dn_mode)); + column += printf("%-10s ", bb_mode_string(modestr, dn->dn_mode)); /* long listing: show number of links */ column += printf("%4lu ", (long) dn->dn_nlink); /* long listing: show user/group */ diff --git a/include/libbb.h b/include/libbb.h index b0312e5..dfcaa05 100644 --- a/include/libbb.h +++ b/include/libbb.h @@ -440,9 +440,8 @@ void *xmmap_anon(size_t size) FAST_FUNC; # define cached_pagesize(var) (var) #endif - -//TODO: supply a pointer to char[11] buffer (avoid statics)? -extern char *bb_mode_string(char buf[12], mode_t mode) FAST_FUNC; +/* Generate ls-style "mode string" like "-rwsr-xr-x" or "drwxrwxrwt" */ +extern char *bb_mode_string(char buf[11], mode_t mode) FAST_FUNC; extern int is_directory(const char *name, int followLinks) FAST_FUNC; enum { /* cp.c, mv.c, install.c depend on these values. CAREFUL when changing them! */ FILEUTILS_PRESERVE_STATUS = 1 << 0, /* -p */ diff --git a/libbb/mode_string.c b/libbb/mode_string.c index 8c12b46..52abe66 100644 --- a/libbb/mode_string.c +++ b/libbb/mode_string.c @@ -16,16 +16,18 @@ #error permission bitflag value assumption(s) violated! #endif +/* Generate ls-style "mode string" like "-rwsr-xr-x" or "drwxrwxrwt" */ + #if ( S_IFSOCK!= 0140000 ) || ( S_IFLNK != 0120000 ) \ || ( S_IFREG != 0100000 ) || ( S_IFBLK != 0060000 ) \ || ( S_IFDIR != 0040000 ) || ( S_IFCHR != 0020000 ) \ || ( S_IFIFO != 0010000 ) -#warning mode type bitflag value assumption(s) violated! falling back to larger version +# warning mode type bitflag value assumption(s) violated! falling back to larger version -#if (S_IRWXU | S_IRWXG | S_IRWXO | S_ISUID | S_ISGID | S_ISVTX) == 07777 -#undef mode_t -#define mode_t unsigned short -#endif +# if (S_IRWXU | S_IRWXG | S_IRWXO | S_ISUID | S_ISGID | S_ISVTX) == 07777 +# undef mode_t +# define mode_t unsigned short +# endif static const mode_t mode_flags[] ALIGN4 = { S_IRUSR, S_IWUSR, S_IXUSR, S_ISUID, @@ -33,17 +35,13 @@ static const mode_t mode_flags[] ALIGN4 = { S_IROTH, S_IWOTH, S_IXOTH, S_ISVTX }; -/* The static const char arrays below are duplicated for the two cases - * because moving them ahead of the mode_flags declaration cause a text - * size increase with the gcc version I'm using. */ - /* The previous version used "0pcCd?bB-?l?s???". However, the '0', 'C', * and 'B' types don't appear to be available on linux. So I removed them. */ static const char type_chars[16] ALIGN1 = "?pc?d?b?-?l?s???"; /***************************************** 0123456789abcdef */ static const char mode_chars[7] ALIGN1 = "rwxSTst"; -char* FAST_FUNC bb_mode_string(char buf[12], mode_t mode) +char* FAST_FUNC bb_mode_string(char buf[11], mode_t mode) { char *p = buf; @@ -79,7 +77,7 @@ static const char type_chars[16] ALIGN1 = "?pc?d?b?-?l?s???"; /***************************************** 0123456789abcdef */ static const char mode_chars[7] ALIGN1 = "rwxSTst"; -char* FAST_FUNC bb_mode_string(char buf[12], mode_t mode) +char* FAST_FUNC bb_mode_string(char buf[11], mode_t mode) { char *p = buf; |