1 /* vi: set sw=4 ts=4: */
3 * tiny-ls.c version 0.1.0: A minimalist 'ls'
4 * Copyright (C) 1996 Brian Candler <B.Candler@pobox.com>
6 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
9 /* [date unknown. Perhaps before year 2000]
10 * To achieve a small memory footprint, this version of 'ls' doesn't do any
11 * file sorting, and only has the most essential command line switches
12 * (i.e., the ones I couldn't live without :-) All features which involve
13 * linking in substantial chunks of libc can be disabled.
15 * Although I don't really want to add new features to this program to
16 * keep it small, I *am* interested to receive bug fixes and ways to make
20 * 1. hidden files can make column width too large
22 * NON-OPTIMAL BEHAVIOUR:
23 * 1. autowidth reads directories twice
24 * 2. if you do a short directory listing without filetype characters
25 * appended, there's no need to stat each one
27 * 1. requires lstat (BSD) - how do you do it without?
30 * ls sorts listing now, and supports almost all options.
36 /* This is a NOEXEC applet. Be very careful! */
40 /* ftpd uses ls, and without timestamps Mozilla won't understand
43 # undef CONFIG_FEATURE_LS_TIMESTAMPS
44 # undef ENABLE_FEATURE_LS_TIMESTAMPS
45 # undef IF_FEATURE_LS_TIMESTAMPS
46 # undef IF_NOT_FEATURE_LS_TIMESTAMPS
47 # define CONFIG_FEATURE_LS_TIMESTAMPS 1
48 # define ENABLE_FEATURE_LS_TIMESTAMPS 1
49 # define IF_FEATURE_LS_TIMESTAMPS(...) __VA_ARGS__
50 # define IF_NOT_FEATURE_LS_TIMESTAMPS(...)
56 TERMINAL_WIDTH = 80, /* use 79 if terminal has linefold bug */
57 COLUMN_GAP = 2, /* includes the file type char */
59 /* what is the overall style of the listing */
60 STYLE_COLUMNS = 1 << 21, /* fill columns */
61 STYLE_LONG = 2 << 21, /* one record per line, extended info */
62 STYLE_SINGLE = 3 << 21, /* one record per line */
63 STYLE_MASK = STYLE_SINGLE,
65 /* 51306 lrwxrwxrwx 1 root root 2 May 11 01:43 /bin/view -> vi* */
66 /* what file information will be listed */
69 LIST_MODEBITS = 1 << 2,
71 LIST_ID_NAME = 1 << 4,
72 LIST_ID_NUMERIC = 1 << 5,
73 LIST_CONTEXT = 1 << 6,
75 //LIST_DEV = 1 << 8, - unused, synonym to LIST_SIZE
76 LIST_DATE_TIME = 1 << 9,
77 LIST_FULLTIME = 1 << 10,
78 LIST_FILENAME = 1 << 11,
79 LIST_SYMLINK = 1 << 12,
80 LIST_FILETYPE = 1 << 13,
82 LIST_MASK = (LIST_EXEC << 1) - 1,
84 /* what files will be displayed */
85 DISP_DIRNAME = 1 << 15, /* 2 or more items? label directories */
86 DISP_HIDDEN = 1 << 16, /* show filenames starting with . */
87 DISP_DOT = 1 << 17, /* show . and .. */
88 DISP_NOLIST = 1 << 18, /* show directory as itself, not contents */
89 DISP_RECURSIVE = 1 << 19, /* show directory and everything below it */
90 DISP_ROWS = 1 << 20, /* print across rows */
91 DISP_MASK = ((DISP_ROWS << 1) - 1) & ~(DISP_DIRNAME - 1),
93 /* how will the files be sorted (CONFIG_FEATURE_LS_SORTFILES) */
94 SORT_FORWARD = 0, /* sort in reverse order */
95 SORT_REVERSE = 1 << 27, /* sort in reverse order */
97 SORT_NAME = 0, /* sort by file name */
98 SORT_SIZE = 1 << 28, /* sort by file size */
99 SORT_ATIME = 2 << 28, /* sort by last access time */
100 SORT_CTIME = 3 << 28, /* sort by last change time */
101 SORT_MTIME = 4 << 28, /* sort by last modification time */
102 SORT_VERSION = 5 << 28, /* sort by version */
103 SORT_EXT = 6 << 28, /* sort by file name extension */
104 SORT_DIR = 7 << 28, /* sort by file or directory */
105 SORT_MASK = (7 << 28) * ENABLE_FEATURE_LS_SORTFILES,
107 /* which of the three times will be used */
108 TIME_CHANGE = (1 << 23) * ENABLE_FEATURE_LS_TIMESTAMPS,
109 TIME_ACCESS = (1 << 24) * ENABLE_FEATURE_LS_TIMESTAMPS,
110 TIME_MASK = (3 << 23) * ENABLE_FEATURE_LS_TIMESTAMPS,
112 FOLLOW_LINKS = (1 << 25) * ENABLE_FEATURE_LS_FOLLOWLINKS,
114 LS_DISP_HR = (1 << 26) * ENABLE_FEATURE_HUMAN_READABLE,
116 LIST_SHORT = LIST_FILENAME,
117 LIST_LONG = LIST_MODEBITS | LIST_NLINKS | LIST_ID_NAME | LIST_SIZE | \
118 LIST_DATE_TIME | LIST_FILENAME | LIST_SYMLINK,
126 /* "[-]Cadil1", POSIX mandated options, busybox always supports */
127 /* "[-]gnsx", POSIX non-mandated options, busybox always supports */
128 /* "[-]Q" GNU option? busybox always supports */
129 /* "[-]Ak" GNU options, busybox always supports */
130 /* "[-]FLRctur", POSIX mandated options, busybox optionally supports */
131 /* "[-]p", POSIX non-mandated options, busybox optionally supports */
132 /* "[-]SXvThw", GNU options, busybox optionally supports */
133 /* "[-]K", SELinux mandated options, busybox optionally supports */
134 /* "[-]e", I think we made this one up */
135 static const char ls_options[] ALIGN1 =
136 "Cadil1gnsxQAk" /* 13 opts, total 13 */
137 IF_FEATURE_LS_TIMESTAMPS("cetu") /* 4, 17 */
138 IF_FEATURE_LS_SORTFILES("SXrv") /* 4, 21 */
139 IF_FEATURE_LS_FILETYPES("Fp") /* 2, 23 */
140 IF_FEATURE_LS_FOLLOWLINKS("L") /* 1, 24 */
141 IF_FEATURE_LS_RECURSIVE("R") /* 1, 25 */
142 IF_FEATURE_HUMAN_READABLE("h") /* 1, 26 */
143 IF_SELINUX("KZ") /* 2, 28 */
144 IF_FEATURE_AUTOWIDTH("T:w:") /* 2, 30 */
161 + 4 * ENABLE_FEATURE_LS_TIMESTAMPS
162 + 4 * ENABLE_FEATURE_LS_SORTFILES
163 + 2 * ENABLE_FEATURE_LS_FILETYPES
164 + 1 * ENABLE_FEATURE_LS_FOLLOWLINKS
165 + 1 * ENABLE_FEATURE_LS_RECURSIVE
166 + 1 * ENABLE_FEATURE_HUMAN_READABLE
168 + 2 * ENABLE_FEATURE_AUTOWIDTH,
169 OPT_color = 1 << OPTBIT_color,
173 LIST_MASK_TRIGGER = 0,
174 STYLE_MASK_TRIGGER = STYLE_MASK,
175 DISP_MASK_TRIGGER = DISP_ROWS,
176 SORT_MASK_TRIGGER = SORT_MASK,
179 /* TODO: simple toggles may be stored as OPT_xxx bits instead */
180 static const unsigned opt_flags[] = {
181 LIST_SHORT | STYLE_COLUMNS, /* C */
182 DISP_HIDDEN | DISP_DOT, /* a */
185 LIST_LONG | STYLE_LONG, /* l - remember LS_DISP_HR in mask! */
186 LIST_SHORT | STYLE_SINGLE, /* 1 */
187 0, /* g (don't show group) - handled via OPT_g */
188 LIST_ID_NUMERIC, /* n */
191 0, /* Q (quote filename) - handled via OPT_Q */
193 ENABLE_SELINUX * LIST_CONTEXT, /* k (ignored if !SELINUX) */
194 #if ENABLE_FEATURE_LS_TIMESTAMPS
195 TIME_CHANGE | (ENABLE_FEATURE_LS_SORTFILES * SORT_CTIME), /* c */
196 LIST_FULLTIME, /* e */
197 ENABLE_FEATURE_LS_SORTFILES * SORT_MTIME, /* t */
198 TIME_ACCESS | (ENABLE_FEATURE_LS_SORTFILES * SORT_ATIME), /* u */
200 #if ENABLE_FEATURE_LS_SORTFILES
203 SORT_REVERSE, /* r */
204 SORT_VERSION, /* v */
206 #if ENABLE_FEATURE_LS_FILETYPES
207 LIST_FILETYPE | LIST_EXEC, /* F */
208 LIST_FILETYPE, /* p */
210 #if ENABLE_FEATURE_LS_FOLLOWLINKS
211 FOLLOW_LINKS, /* L */
213 #if ENABLE_FEATURE_LS_RECURSIVE
214 DISP_RECURSIVE, /* R */
216 #if ENABLE_FEATURE_HUMAN_READABLE
220 LIST_MODEBITS|LIST_NLINKS|LIST_CONTEXT|LIST_SIZE|LIST_DATE_TIME, /* K */
223 LIST_MODEBITS|LIST_ID_NAME|LIST_CONTEXT, /* Z */
226 /* options after Z are not processed through opt_flags:
233 * a directory entry and its stat info are stored here
236 const char *name; /* the dir entry name */
237 const char *fullname; /* the dir entry name */
238 struct dnode *next; /* point at the next node */
239 smallint fname_allocated;
240 struct stat dstat; /* the file stat info */
241 IF_SELINUX(security_context_t sid;)
244 static struct dnode **list_dir(const char *, unsigned *);
245 static unsigned list_single(const struct dnode *);
248 #if ENABLE_FEATURE_LS_COLOR
253 #if ENABLE_FEATURE_AUTOWIDTH
254 unsigned tabstops; // = COLUMN_GAP;
255 unsigned terminal_width; // = TERMINAL_WIDTH;
257 #if ENABLE_FEATURE_LS_TIMESTAMPS
258 /* Do time() just once. Saves one syscall per file for "ls -l" */
259 time_t current_time_t;
262 #define G (*(struct globals*)&bb_common_bufsiz1)
263 #if ENABLE_FEATURE_LS_COLOR
264 # define show_color (G.show_color )
266 enum { show_color = 0 };
268 #define exit_code (G.exit_code )
269 #define all_fmt (G.all_fmt )
270 #if ENABLE_FEATURE_AUTOWIDTH
271 # define tabstops (G.tabstops )
272 # define terminal_width (G.terminal_width)
275 tabstops = COLUMN_GAP,
276 terminal_width = TERMINAL_WIDTH,
279 #define current_time_t (G.current_time_t)
280 #define INIT_G() do { \
281 /* we have to zero it out because of NOEXEC */ \
282 memset(&G, 0, sizeof(G)); \
283 IF_FEATURE_AUTOWIDTH(tabstops = COLUMN_GAP;) \
284 IF_FEATURE_AUTOWIDTH(terminal_width = TERMINAL_WIDTH;) \
285 IF_FEATURE_LS_TIMESTAMPS(time(¤t_time_t);) \
289 static struct dnode *my_stat(const char *fullname, const char *name, int force_follow)
293 IF_SELINUX(security_context_t sid = NULL;)
295 if ((all_fmt & FOLLOW_LINKS) || force_follow) {
297 if (is_selinux_enabled()) {
298 getfilecon(fullname, &sid);
301 if (stat(fullname, &dstat)) {
302 bb_simple_perror_msg(fullname);
303 exit_code = EXIT_FAILURE;
308 if (is_selinux_enabled()) {
309 lgetfilecon(fullname, &sid);
312 if (lstat(fullname, &dstat)) {
313 bb_simple_perror_msg(fullname);
314 exit_code = EXIT_FAILURE;
319 cur = xmalloc(sizeof(*cur));
320 cur->fullname = fullname;
323 IF_SELINUX(cur->sid = sid;)
327 /* FYI type values: 1:fifo 2:char 4:dir 6:blk 8:file 10:link 12:socket
328 * (various wacky OSes: 13:Sun door 14:BSD whiteout 5:XENIX named file
329 * 3/7:multiplexed char/block device)
330 * and we use 0 for unknown and 15 for executables (see below) */
331 #define TYPEINDEX(mode) (((mode) >> 12) & 0x0f)
332 #define TYPECHAR(mode) ("0pcCd?bB-?l?s???" [TYPEINDEX(mode)])
333 #define APPCHAR(mode) ("\0|\0\0/\0\0\0\0\0@\0=\0\0\0" [TYPEINDEX(mode)])
334 /* 036 black foreground 050 black background
335 037 red foreground 051 red background
336 040 green foreground 052 green background
337 041 brown foreground 053 brown background
338 042 blue foreground 054 blue background
339 043 magenta (purple) foreground 055 magenta background
340 044 cyan (light blue) foreground 056 cyan background
341 045 gray foreground 057 white background
343 #define COLOR(mode) ( \
344 /*un fi chr dir blk file link sock exe */ \
345 "\037\043\043\045\042\045\043\043\000\045\044\045\043\045\045\040" \
347 /* Select normal (0) [actually "reset all"] or bold (1)
348 * (other attributes are 2:dim 4:underline 5:blink 7:reverse,
349 * let's use 7 for "impossible" types, just for fun)
350 * Note: coreutils 6.9 uses inverted red for setuid binaries.
352 #define ATTR(mode) ( \
353 /*un fi chr dir blk file link sock exe */ \
354 "\01\00\01\07\01\07\01\07\00\07\01\07\01\07\07\01" \
357 #if ENABLE_FEATURE_LS_COLOR
358 /* mode of zero is interpreted as "unknown" (stat failed) */
359 static char fgcolor(mode_t mode)
361 if (S_ISREG(mode) && (mode & (S_IXUSR | S_IXGRP | S_IXOTH)))
362 return COLOR(0xF000); /* File is executable ... */
365 static char bold(mode_t mode)
367 if (S_ISREG(mode) && (mode & (S_IXUSR | S_IXGRP | S_IXOTH)))
368 return ATTR(0xF000); /* File is executable ... */
373 #if ENABLE_FEATURE_LS_FILETYPES || ENABLE_FEATURE_LS_COLOR
374 static char append_char(mode_t mode)
376 if (!(all_fmt & LIST_FILETYPE))
380 if (!(all_fmt & LIST_EXEC))
382 if (S_ISREG(mode) && (mode & (S_IXUSR | S_IXGRP | S_IXOTH)))
384 return APPCHAR(mode);
388 static unsigned count_dirs(struct dnode **dn, int which)
400 if (!S_ISDIR((*dn)->dstat.st_mode))
403 if (which != SPLIT_SUBDIR /* if not requested to skip . / .. */
404 /* or if it's not . or .. */
405 || name[0] != '.' || (name[1] && (name[1] != '.' || name[2]))
410 return which != SPLIT_FILE ? dirs : all - dirs;
413 /* get memory to hold an array of pointers */
414 static struct dnode **dnalloc(unsigned num)
419 num++; /* so that we have terminating NULL */
420 return xzalloc(num * sizeof(struct dnode *));
423 #if ENABLE_FEATURE_LS_RECURSIVE
424 static void dfree(struct dnode **dnp)
431 for (i = 0; dnp[i]; i++) {
432 struct dnode *cur = dnp[i];
433 if (cur->fname_allocated)
434 free((char*)cur->fullname);
440 #define dfree(...) ((void)0)
443 /* Returns NULL-terminated malloced vector of pointers (or NULL) */
444 static struct dnode **splitdnarray(struct dnode **dn, int which)
452 /* count how many dirs or files there are */
453 dncnt = count_dirs(dn, which);
455 /* allocate a file array and a dir array */
456 dnp = dnalloc(dncnt);
458 /* copy the entrys into the file or dir array */
459 for (d = 0; *dn; dn++) {
460 if (S_ISDIR((*dn)->dstat.st_mode)) {
463 if (!(which & (SPLIT_DIR|SPLIT_SUBDIR)))
466 if ((which & SPLIT_DIR)
467 || name[0]!='.' || (name[1] && (name[1]!='.' || name[2]))
471 } else if (!(which & (SPLIT_DIR|SPLIT_SUBDIR))) {
478 #if ENABLE_FEATURE_LS_SORTFILES
479 static int sortcmp(const void *a, const void *b)
481 struct dnode *d1 = *(struct dnode **)a;
482 struct dnode *d2 = *(struct dnode **)b;
483 unsigned sort_opts = all_fmt & SORT_MASK;
486 dif = 0; /* assume SORT_NAME */
487 // TODO: use pre-initialized function pointer
488 // instead of branch forest
489 if (sort_opts == SORT_SIZE) {
490 dif = (int) (d2->dstat.st_size - d1->dstat.st_size);
491 } else if (sort_opts == SORT_ATIME) {
492 dif = (int) (d2->dstat.st_atime - d1->dstat.st_atime);
493 } else if (sort_opts == SORT_CTIME) {
494 dif = (int) (d2->dstat.st_ctime - d1->dstat.st_ctime);
495 } else if (sort_opts == SORT_MTIME) {
496 dif = (int) (d2->dstat.st_mtime - d1->dstat.st_mtime);
497 } else if (sort_opts == SORT_DIR) {
498 dif = S_ISDIR(d2->dstat.st_mode) - S_ISDIR(d1->dstat.st_mode);
499 /* } else if (sort_opts == SORT_VERSION) { */
500 /* } else if (sort_opts == SORT_EXT) { */
504 /* sort by name - may be a tie_breaker for time or size cmp */
505 if (ENABLE_LOCALE_SUPPORT) dif = strcoll(d1->name, d2->name);
506 else dif = strcmp(d1->name, d2->name);
509 if (all_fmt & SORT_REVERSE) {
515 static void dnsort(struct dnode **dn, int size)
517 qsort(dn, size, sizeof(*dn), sortcmp);
520 #define dnsort(dn, size) ((void)0)
524 static void showfiles(struct dnode **dn, unsigned nfiles)
526 unsigned i, ncols, nrows, row, nc;
528 unsigned nexttab = 0;
529 unsigned column_width = 0; /* for STYLE_LONG and STYLE_SINGLE not used */
532 if (dn == NULL || nfiles < 1)
536 if (all_fmt & STYLE_LONG) {
539 /* find the longest file name, use that as the column width */
540 for (i = 0; dn[i]; i++) {
541 int len = bb_mbstrlen(dn[i]->name);
542 if (column_width < len)
545 column_width += tabstops +
546 IF_SELINUX( ((all_fmt & LIST_CONTEXT) ? 33 : 0) + )
547 ((all_fmt & LIST_INO) ? 8 : 0) +
548 ((all_fmt & LIST_BLOCKS) ? 5 : 0);
549 ncols = (int) (terminal_width / column_width);
553 nrows = nfiles / ncols;
554 if (nrows * ncols < nfiles)
555 nrows++; /* round up fractionals */
561 for (row = 0; row < nrows; row++) {
562 for (nc = 0; nc < ncols; nc++) {
563 /* reach into the array based on the column and row */
564 if (all_fmt & DISP_ROWS)
565 i = (row * ncols) + nc; /* display across row */
567 i = (nc * nrows) + row; /* display by column */
571 printf("%*s", nexttab, "");
574 nexttab = column + column_width;
575 column += list_single(dn[i]);
585 /* http://www.opengroup.org/onlinepubs/9699919799/utilities/ls.html
586 * If any of the -l, -n, -s options is specified, each list
587 * of files within the directory shall be preceded by a
588 * status line indicating the number of file system blocks
589 * occupied by files in the directory in 512-byte units if
590 * the -k option is not specified, or 1024-byte units if the
591 * -k option is specified, rounded up to the next integral
594 /* by Jorgen Overgaard (jorgen AT antistaten.se) */
595 static off_t calculate_blocks(struct dnode **dn, int nfiles)
599 blocks += (*dn)->dstat.st_blocks; /* in 512 byte blocks */
604 /* Even though standard says use 512 byte blocks, coreutils use 1k */
605 /* Actually, we round up by calculating (blocks + 1) / 2,
606 * "+ 1" was done when we initialized blocks to 1 */
612 static void showdirs(struct dnode **dn, int first)
616 struct dnode **subdnp;
620 if (dn == NULL || ndirs < 1) {
626 if (all_fmt & (DISP_DIRNAME | DISP_RECURSIVE)) {
630 printf("%s:\n", (*dn)->fullname);
632 subdnp = list_dir((*dn)->fullname, &nfiles);
634 if (all_fmt & STYLE_LONG)
635 printf("total %"OFF_FMT"u\n", calculate_blocks(subdnp));
638 /* list all files at this level */
639 dnsort(subdnp, nfiles);
640 showfiles(subdnp, nfiles);
641 if (ENABLE_FEATURE_LS_RECURSIVE
642 && (all_fmt & DISP_RECURSIVE)
644 /* recursive - list the sub-dirs */
645 dnd = splitdnarray(subdnp, SPLIT_SUBDIR);
646 dndirs = count_dirs(subdnp, SPLIT_SUBDIR);
650 /* free the array of dnode pointers to the dirs */
654 /* free the dnodes and the fullname mem */
661 /* Returns NULL-terminated malloced vector of pointers (or NULL) */
662 static struct dnode **list_dir(const char *path, unsigned *nfiles_p)
664 struct dnode *dn, *cur, **dnp;
665 struct dirent *entry;
675 dir = warn_opendir(path);
677 exit_code = EXIT_FAILURE;
678 return NULL; /* could not open the dir */
682 while ((entry = readdir(dir)) != NULL) {
685 /* are we going to list the file- it may be . or .. or a hidden file */
686 if (entry->d_name[0] == '.') {
687 if ((!entry->d_name[1] || (entry->d_name[1] == '.' && !entry->d_name[2]))
688 && !(all_fmt & DISP_DOT)
692 if (!(all_fmt & DISP_HIDDEN))
695 fullname = concat_path_file(path, entry->d_name);
696 cur = my_stat(fullname, bb_basename(fullname), 0);
701 cur->fname_allocated = 1;
711 /* now that we know how many files there are
712 * allocate memory for an array to hold dnode pointers
715 dnp = dnalloc(nfiles);
716 for (i = 0; /* i < nfiles - detected via !dn below */; i++) {
717 dnp[i] = dn; /* save pointer to node in array */
727 static int print_name(const char *name)
729 if (option_mask32 & OPT_Q) {
730 #if ENABLE_FEATURE_ASSUME_UNICODE
731 unsigned len = 2 + bb_mbstrlen(name);
742 if (!ENABLE_FEATURE_ASSUME_UNICODE)
749 #if ENABLE_FEATURE_ASSUME_UNICODE
751 return bb_mbstrlen(name);
753 return printf("%s", name);
758 static NOINLINE unsigned list_single(const struct dnode *dn)
761 char *lpath = lpath; /* for compiler */
762 #if ENABLE_FEATURE_LS_TIMESTAMPS
766 #if ENABLE_FEATURE_LS_FILETYPES || ENABLE_FEATURE_LS_COLOR
772 if (dn->fullname == NULL)
776 #if ENABLE_FEATURE_LS_TIMESTAMPS
777 ttime = dn->dstat.st_mtime; /* the default time */
778 if (all_fmt & TIME_ACCESS)
779 ttime = dn->dstat.st_atime;
780 if (all_fmt & TIME_CHANGE)
781 ttime = dn->dstat.st_ctime;
782 filetime = ctime(&ttime);
784 #if ENABLE_FEATURE_LS_FILETYPES
785 append = append_char(dn->dstat.st_mode);
788 /* Do readlink early, so that if it fails, error message
789 * does not appear *inside* of the "ls -l" line */
790 if (all_fmt & LIST_SYMLINK)
791 if (S_ISLNK(dn->dstat.st_mode))
792 lpath = xmalloc_readlink_or_warn(dn->fullname);
794 if (all_fmt & LIST_INO)
795 column += printf("%7lu ", (long) dn->dstat.st_ino);
796 if (all_fmt & LIST_BLOCKS)
797 column += printf("%4"OFF_FMT"u ", (off_t) dn->dstat.st_blocks >> 1);
798 if (all_fmt & LIST_MODEBITS)
799 column += printf("%-10s ", (char *) bb_mode_string(dn->dstat.st_mode));
800 if (all_fmt & LIST_NLINKS)
801 column += printf("%4lu ", (long) dn->dstat.st_nlink);
802 #if ENABLE_FEATURE_LS_USERNAME
803 if (all_fmt & LIST_ID_NAME) {
804 if (option_mask32 & OPT_g) {
805 column += printf("%-8.8s",
806 get_cached_username(dn->dstat.st_uid));
808 column += printf("%-8.8s %-8.8s",
809 get_cached_username(dn->dstat.st_uid),
810 get_cached_groupname(dn->dstat.st_gid));
814 if (all_fmt & LIST_ID_NUMERIC) {
815 if (option_mask32 & OPT_g)
816 column += printf("%-8u", (int) dn->dstat.st_uid);
818 column += printf("%-8u %-8u",
819 (int) dn->dstat.st_uid,
820 (int) dn->dstat.st_gid);
822 if (all_fmt & (LIST_SIZE /*|LIST_DEV*/ )) {
823 if (S_ISBLK(dn->dstat.st_mode) || S_ISCHR(dn->dstat.st_mode)) {
824 column += printf("%4u, %3u ",
825 (int) major(dn->dstat.st_rdev),
826 (int) minor(dn->dstat.st_rdev));
828 if (all_fmt & LS_DISP_HR) {
829 column += printf("%9s ",
830 make_human_readable_str(dn->dstat.st_size, 1, 0));
832 column += printf("%9"OFF_FMT"u ", (off_t) dn->dstat.st_size);
836 #if ENABLE_FEATURE_LS_TIMESTAMPS
837 if (all_fmt & LIST_FULLTIME)
838 column += printf("%24.24s ", filetime);
839 if (all_fmt & LIST_DATE_TIME)
840 if ((all_fmt & LIST_FULLTIME) == 0) {
841 /* current_time_t ~== time(NULL) */
842 age = current_time_t - ttime;
843 printf("%6.6s ", filetime + 4);
844 if (age < 3600L * 24 * 365 / 2 && age > -15 * 60) {
845 /* hh:mm if less than 6 months old */
846 printf("%5.5s ", filetime + 11);
848 printf(" %4.4s ", filetime + 20);
854 if (all_fmt & LIST_CONTEXT) {
855 column += printf("%-32s ", dn->sid ? dn->sid : "unknown");
859 if (all_fmt & LIST_FILENAME) {
860 #if ENABLE_FEATURE_LS_COLOR
862 info.st_mode = 0; /* for fgcolor() */
863 lstat(dn->fullname, &info);
864 printf("\033[%u;%um", bold(info.st_mode),
865 fgcolor(info.st_mode));
868 column += print_name(dn->name);
873 if (all_fmt & LIST_SYMLINK) {
874 if (S_ISLNK(dn->dstat.st_mode) && lpath) {
876 #if ENABLE_FEATURE_LS_FILETYPES || ENABLE_FEATURE_LS_COLOR
877 #if ENABLE_FEATURE_LS_COLOR
878 info.st_mode = 0; /* for fgcolor() */
880 if (stat(dn->fullname, &info) == 0) {
881 append = append_char(info.st_mode);
884 #if ENABLE_FEATURE_LS_COLOR
886 printf("\033[%u;%um", bold(info.st_mode),
887 fgcolor(info.st_mode));
890 column += print_name(lpath) + 4;
897 #if ENABLE_FEATURE_LS_FILETYPES
898 if (all_fmt & LIST_FILETYPE) {
910 int ls_main(int argc UNUSED_PARAM, char **argv)
922 #if ENABLE_FEATURE_LS_COLOR
923 /* colored LS support by JaWi, janwillem.janssen@lxtreme.nl */
926 * ls: invalid argument 'BOGUS' for '--color'
927 * Valid arguments are:
928 * 'always', 'yes', 'force'
929 * 'never', 'no', 'none'
930 * 'auto', 'tty', 'if-tty'
931 * (and substrings: "--color=alwa" work too)
933 static const char ls_longopts[] ALIGN1 =
934 "color\0" Optional_argument "\xff"; /* no short equivalent */
935 static const char color_str[] ALIGN1 =
936 "always\0""yes\0""force\0"
937 "auto\0""tty\0""if-tty\0";
938 /* need to initialize since --color has _an optional_ argument */
939 const char *color_opt = color_str; /* "always" */
944 check_unicode_in_env();
946 all_fmt = LIST_SHORT |
947 (ENABLE_FEATURE_LS_SORTFILES * (SORT_NAME | SORT_FORWARD));
949 #if ENABLE_FEATURE_AUTOWIDTH
950 /* obtain the terminal width */
951 get_terminal_width_height(STDIN_FILENO, &terminal_width, NULL);
956 /* process options */
957 IF_FEATURE_LS_COLOR(applet_long_options = ls_longopts;)
958 #if ENABLE_FEATURE_AUTOWIDTH
959 opt_complementary = "T+:w+"; /* -T N, -w N */
960 opt = getopt32(argv, ls_options, &tabstops, &terminal_width
961 IF_FEATURE_LS_COLOR(, &color_opt));
963 opt = getopt32(argv, ls_options IF_FEATURE_LS_COLOR(, &color_opt));
965 for (i = 0; opt_flags[i] != (1U<<31); i++) {
966 if (opt & (1 << i)) {
967 unsigned flags = opt_flags[i];
969 if (flags & LIST_MASK_TRIGGER)
970 all_fmt &= ~LIST_MASK;
971 if (flags & STYLE_MASK_TRIGGER)
972 all_fmt &= ~STYLE_MASK;
973 if (flags & SORT_MASK_TRIGGER)
974 all_fmt &= ~SORT_MASK;
975 if (flags & DISP_MASK_TRIGGER)
976 all_fmt &= ~DISP_MASK;
977 if (flags & TIME_MASK)
978 all_fmt &= ~TIME_MASK;
979 if (flags & LIST_CONTEXT)
980 all_fmt |= STYLE_SINGLE;
981 /* huh?? opt cannot be 'l' */
982 //if (LS_DISP_HR && opt == 'l')
983 // all_fmt &= ~LS_DISP_HR;
988 #if ENABLE_FEATURE_LS_COLOR
989 /* find color bit value - last position for short getopt */
990 if (ENABLE_FEATURE_LS_COLOR_IS_DEFAULT && isatty(STDOUT_FILENO)) {
991 char *p = getenv("LS_COLORS");
992 /* LS_COLORS is unset, or (not empty && not "none") ? */
993 if (!p || (p[0] && strcmp(p, "none") != 0))
996 if (opt & OPT_color) {
997 if (color_opt[0] == 'n')
999 else switch (index_in_substrings(color_str, color_opt)) {
1003 if (isatty(STDOUT_FILENO)) {
1013 /* sort out which command line options take precedence */
1014 if (ENABLE_FEATURE_LS_RECURSIVE && (all_fmt & DISP_NOLIST))
1015 all_fmt &= ~DISP_RECURSIVE; /* no recurse if listing only dir */
1016 if (ENABLE_FEATURE_LS_TIMESTAMPS && ENABLE_FEATURE_LS_SORTFILES) {
1017 if (all_fmt & TIME_CHANGE)
1018 all_fmt = (all_fmt & ~SORT_MASK) | SORT_CTIME;
1019 if (all_fmt & TIME_ACCESS)
1020 all_fmt = (all_fmt & ~SORT_MASK) | SORT_ATIME;
1022 if ((all_fmt & STYLE_MASK) != STYLE_LONG) /* only for long list */
1023 all_fmt &= ~(LIST_ID_NUMERIC|LIST_FULLTIME|LIST_ID_NAME|LIST_ID_NUMERIC);
1024 if (ENABLE_FEATURE_LS_USERNAME)
1025 if ((all_fmt & STYLE_MASK) == STYLE_LONG && (all_fmt & LIST_ID_NUMERIC))
1026 all_fmt &= ~LIST_ID_NAME; /* don't list names if numeric uid */
1028 /* choose a display format */
1029 if (!(all_fmt & STYLE_MASK))
1030 all_fmt |= (isatty(STDOUT_FILENO) ? STYLE_COLUMNS : STYLE_SINGLE);
1034 *--argv = (char*)".";
1037 all_fmt |= DISP_DIRNAME; /* 2 or more items? label directories */
1039 /* stuff the command line file names into a dnode array */
1043 /* NB: follow links on command line unless -l or -s */
1044 cur = my_stat(*argv, *argv, !(all_fmt & (STYLE_LONG|LIST_BLOCKS)));
1048 cur->fname_allocated = 0;
1054 /* nfiles _may_ be 0 here - try "ls doesnt_exist" */
1058 /* now that we know how many files there are
1059 * allocate memory for an array to hold dnode pointers
1061 dnp = dnalloc(nfiles);
1062 for (i = 0; /* i < nfiles - detected via !dn below */; i++) {
1063 dnp[i] = dn; /* save pointer to node in array */
1069 if (all_fmt & DISP_NOLIST) {
1070 dnsort(dnp, nfiles);
1071 showfiles(dnp, nfiles);
1073 dnd = splitdnarray(dnp, SPLIT_DIR);
1074 dnf = splitdnarray(dnp, SPLIT_FILE);
1075 dndirs = count_dirs(dnp, SPLIT_DIR);
1076 dnfiles = nfiles - dndirs;
1078 dnsort(dnf, dnfiles);
1079 showfiles(dnf, dnfiles);
1080 if (ENABLE_FEATURE_CLEAN_UP)
1084 dnsort(dnd, dndirs);
1085 showdirs(dnd, dnfiles == 0);
1086 if (ENABLE_FEATURE_CLEAN_UP)
1090 if (ENABLE_FEATURE_CLEAN_UP)