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)
600 /* st_blocks is in 512 byte blocks */
601 blocks += (*dn)->dstat.st_blocks;
606 /* Even though standard says use 512 byte blocks, coreutils use 1k */
607 /* Actually, we round up by calculating (blocks + 1) / 2,
608 * "+ 1" was done when we initialized blocks to 1 */
614 static void showdirs(struct dnode **dn, int first)
618 struct dnode **subdnp;
622 if (dn == NULL || ndirs < 1) {
628 if (all_fmt & (DISP_DIRNAME | DISP_RECURSIVE)) {
632 printf("%s:\n", (*dn)->fullname);
634 subdnp = list_dir((*dn)->fullname, &nfiles);
636 if ((all_fmt & STYLE_MASK) == STYLE_LONG)
637 printf("total %"OFF_FMT"u\n", calculate_blocks(subdnp));
640 /* list all files at this level */
641 dnsort(subdnp, nfiles);
642 showfiles(subdnp, nfiles);
643 if (ENABLE_FEATURE_LS_RECURSIVE
644 && (all_fmt & DISP_RECURSIVE)
646 /* recursive - list the sub-dirs */
647 dnd = splitdnarray(subdnp, SPLIT_SUBDIR);
648 dndirs = count_dirs(subdnp, SPLIT_SUBDIR);
652 /* free the array of dnode pointers to the dirs */
656 /* free the dnodes and the fullname mem */
663 /* Returns NULL-terminated malloced vector of pointers (or NULL) */
664 static struct dnode **list_dir(const char *path, unsigned *nfiles_p)
666 struct dnode *dn, *cur, **dnp;
667 struct dirent *entry;
677 dir = warn_opendir(path);
679 exit_code = EXIT_FAILURE;
680 return NULL; /* could not open the dir */
684 while ((entry = readdir(dir)) != NULL) {
687 /* are we going to list the file- it may be . or .. or a hidden file */
688 if (entry->d_name[0] == '.') {
689 if ((!entry->d_name[1] || (entry->d_name[1] == '.' && !entry->d_name[2]))
690 && !(all_fmt & DISP_DOT)
694 if (!(all_fmt & DISP_HIDDEN))
697 fullname = concat_path_file(path, entry->d_name);
698 cur = my_stat(fullname, bb_basename(fullname), 0);
703 cur->fname_allocated = 1;
713 /* now that we know how many files there are
714 * allocate memory for an array to hold dnode pointers
717 dnp = dnalloc(nfiles);
718 for (i = 0; /* i < nfiles - detected via !dn below */; i++) {
719 dnp[i] = dn; /* save pointer to node in array */
729 static int print_name(const char *name)
731 if (option_mask32 & OPT_Q) {
732 #if ENABLE_FEATURE_ASSUME_UNICODE
733 unsigned len = 2 + bb_mbstrlen(name);
744 if (!ENABLE_FEATURE_ASSUME_UNICODE)
751 #if ENABLE_FEATURE_ASSUME_UNICODE
753 return bb_mbstrlen(name);
755 return printf("%s", name);
760 static NOINLINE unsigned list_single(const struct dnode *dn)
763 char *lpath = lpath; /* for compiler */
764 #if ENABLE_FEATURE_LS_TIMESTAMPS
768 #if ENABLE_FEATURE_LS_FILETYPES || ENABLE_FEATURE_LS_COLOR
774 if (dn->fullname == NULL)
778 #if ENABLE_FEATURE_LS_TIMESTAMPS
779 ttime = dn->dstat.st_mtime; /* the default time */
780 if (all_fmt & TIME_ACCESS)
781 ttime = dn->dstat.st_atime;
782 if (all_fmt & TIME_CHANGE)
783 ttime = dn->dstat.st_ctime;
784 filetime = ctime(&ttime);
786 #if ENABLE_FEATURE_LS_FILETYPES
787 append = append_char(dn->dstat.st_mode);
790 /* Do readlink early, so that if it fails, error message
791 * does not appear *inside* of the "ls -l" line */
792 if (all_fmt & LIST_SYMLINK)
793 if (S_ISLNK(dn->dstat.st_mode))
794 lpath = xmalloc_readlink_or_warn(dn->fullname);
796 if (all_fmt & LIST_INO)
797 column += printf("%7lu ", (long) dn->dstat.st_ino);
798 if (all_fmt & LIST_BLOCKS)
799 column += printf("%4"OFF_FMT"u ", (off_t) dn->dstat.st_blocks >> 1);
800 if (all_fmt & LIST_MODEBITS)
801 column += printf("%-10s ", (char *) bb_mode_string(dn->dstat.st_mode));
802 if (all_fmt & LIST_NLINKS)
803 column += printf("%4lu ", (long) dn->dstat.st_nlink);
804 #if ENABLE_FEATURE_LS_USERNAME
805 if (all_fmt & LIST_ID_NAME) {
806 if (option_mask32 & OPT_g) {
807 column += printf("%-8.8s",
808 get_cached_username(dn->dstat.st_uid));
810 column += printf("%-8.8s %-8.8s",
811 get_cached_username(dn->dstat.st_uid),
812 get_cached_groupname(dn->dstat.st_gid));
816 if (all_fmt & LIST_ID_NUMERIC) {
817 if (option_mask32 & OPT_g)
818 column += printf("%-8u", (int) dn->dstat.st_uid);
820 column += printf("%-8u %-8u",
821 (int) dn->dstat.st_uid,
822 (int) dn->dstat.st_gid);
824 if (all_fmt & (LIST_SIZE /*|LIST_DEV*/ )) {
825 if (S_ISBLK(dn->dstat.st_mode) || S_ISCHR(dn->dstat.st_mode)) {
826 column += printf("%4u, %3u ",
827 (int) major(dn->dstat.st_rdev),
828 (int) minor(dn->dstat.st_rdev));
830 if (all_fmt & LS_DISP_HR) {
831 column += printf("%9s ",
832 /* print st_size, show one fractional, use suffixes */
833 make_human_readable_str(dn->dstat.st_size, 1, 0)
836 column += printf("%9"OFF_FMT"u ", (off_t) dn->dstat.st_size);
840 #if ENABLE_FEATURE_LS_TIMESTAMPS
841 if (all_fmt & LIST_FULLTIME)
842 column += printf("%24.24s ", filetime);
843 if (all_fmt & LIST_DATE_TIME)
844 if ((all_fmt & LIST_FULLTIME) == 0) {
845 /* current_time_t ~== time(NULL) */
846 age = current_time_t - ttime;
847 printf("%6.6s ", filetime + 4);
848 if (age < 3600L * 24 * 365 / 2 && age > -15 * 60) {
849 /* hh:mm if less than 6 months old */
850 printf("%5.5s ", filetime + 11);
852 printf(" %4.4s ", filetime + 20);
858 if (all_fmt & LIST_CONTEXT) {
859 column += printf("%-32s ", dn->sid ? dn->sid : "unknown");
863 if (all_fmt & LIST_FILENAME) {
864 #if ENABLE_FEATURE_LS_COLOR
866 info.st_mode = 0; /* for fgcolor() */
867 lstat(dn->fullname, &info);
868 printf("\033[%u;%um", bold(info.st_mode),
869 fgcolor(info.st_mode));
872 column += print_name(dn->name);
877 if (all_fmt & LIST_SYMLINK) {
878 if (S_ISLNK(dn->dstat.st_mode) && lpath) {
880 #if ENABLE_FEATURE_LS_FILETYPES || ENABLE_FEATURE_LS_COLOR
881 #if ENABLE_FEATURE_LS_COLOR
882 info.st_mode = 0; /* for fgcolor() */
884 if (stat(dn->fullname, &info) == 0) {
885 append = append_char(info.st_mode);
888 #if ENABLE_FEATURE_LS_COLOR
890 printf("\033[%u;%um", bold(info.st_mode),
891 fgcolor(info.st_mode));
894 column += print_name(lpath) + 4;
901 #if ENABLE_FEATURE_LS_FILETYPES
902 if (all_fmt & LIST_FILETYPE) {
914 int ls_main(int argc UNUSED_PARAM, char **argv)
926 #if ENABLE_FEATURE_LS_COLOR
927 /* colored LS support by JaWi, janwillem.janssen@lxtreme.nl */
930 * ls: invalid argument 'BOGUS' for '--color'
931 * Valid arguments are:
932 * 'always', 'yes', 'force'
933 * 'never', 'no', 'none'
934 * 'auto', 'tty', 'if-tty'
935 * (and substrings: "--color=alwa" work too)
937 static const char ls_longopts[] ALIGN1 =
938 "color\0" Optional_argument "\xff"; /* no short equivalent */
939 static const char color_str[] ALIGN1 =
940 "always\0""yes\0""force\0"
941 "auto\0""tty\0""if-tty\0";
942 /* need to initialize since --color has _an optional_ argument */
943 const char *color_opt = color_str; /* "always" */
948 check_unicode_in_env();
950 all_fmt = LIST_SHORT |
951 (ENABLE_FEATURE_LS_SORTFILES * (SORT_NAME | SORT_FORWARD));
953 #if ENABLE_FEATURE_AUTOWIDTH
954 /* obtain the terminal width */
955 get_terminal_width_height(STDIN_FILENO, &terminal_width, NULL);
960 /* process options */
961 IF_FEATURE_LS_COLOR(applet_long_options = ls_longopts;)
962 #if ENABLE_FEATURE_AUTOWIDTH
963 opt_complementary = "T+:w+"; /* -T N, -w N */
964 opt = getopt32(argv, ls_options, &tabstops, &terminal_width
965 IF_FEATURE_LS_COLOR(, &color_opt));
967 opt = getopt32(argv, ls_options IF_FEATURE_LS_COLOR(, &color_opt));
969 for (i = 0; opt_flags[i] != (1U<<31); i++) {
970 if (opt & (1 << i)) {
971 unsigned flags = opt_flags[i];
973 if (flags & LIST_MASK_TRIGGER)
974 all_fmt &= ~LIST_MASK;
975 if (flags & STYLE_MASK_TRIGGER)
976 all_fmt &= ~STYLE_MASK;
977 if (flags & SORT_MASK_TRIGGER)
978 all_fmt &= ~SORT_MASK;
979 if (flags & DISP_MASK_TRIGGER)
980 all_fmt &= ~DISP_MASK;
981 if (flags & TIME_MASK)
982 all_fmt &= ~TIME_MASK;
983 if (flags & LIST_CONTEXT)
984 all_fmt |= STYLE_SINGLE;
985 /* huh?? opt cannot be 'l' */
986 //if (LS_DISP_HR && opt == 'l')
987 // all_fmt &= ~LS_DISP_HR;
992 #if ENABLE_FEATURE_LS_COLOR
993 /* find color bit value - last position for short getopt */
994 if (ENABLE_FEATURE_LS_COLOR_IS_DEFAULT && isatty(STDOUT_FILENO)) {
995 char *p = getenv("LS_COLORS");
996 /* LS_COLORS is unset, or (not empty && not "none") ? */
997 if (!p || (p[0] && strcmp(p, "none") != 0))
1000 if (opt & OPT_color) {
1001 if (color_opt[0] == 'n')
1003 else switch (index_in_substrings(color_str, color_opt)) {
1007 if (isatty(STDOUT_FILENO)) {
1017 /* sort out which command line options take precedence */
1018 if (ENABLE_FEATURE_LS_RECURSIVE && (all_fmt & DISP_NOLIST))
1019 all_fmt &= ~DISP_RECURSIVE; /* no recurse if listing only dir */
1020 if (ENABLE_FEATURE_LS_TIMESTAMPS && ENABLE_FEATURE_LS_SORTFILES) {
1021 if (all_fmt & TIME_CHANGE)
1022 all_fmt = (all_fmt & ~SORT_MASK) | SORT_CTIME;
1023 if (all_fmt & TIME_ACCESS)
1024 all_fmt = (all_fmt & ~SORT_MASK) | SORT_ATIME;
1026 if ((all_fmt & STYLE_MASK) != STYLE_LONG) /* only for long list */
1027 all_fmt &= ~(LIST_ID_NUMERIC|LIST_FULLTIME|LIST_ID_NAME|LIST_ID_NUMERIC);
1028 if (ENABLE_FEATURE_LS_USERNAME)
1029 if ((all_fmt & STYLE_MASK) == STYLE_LONG && (all_fmt & LIST_ID_NUMERIC))
1030 all_fmt &= ~LIST_ID_NAME; /* don't list names if numeric uid */
1032 /* choose a display format */
1033 if (!(all_fmt & STYLE_MASK))
1034 all_fmt |= (isatty(STDOUT_FILENO) ? STYLE_COLUMNS : STYLE_SINGLE);
1038 *--argv = (char*)".";
1041 all_fmt |= DISP_DIRNAME; /* 2 or more items? label directories */
1043 /* stuff the command line file names into a dnode array */
1047 /* NB: follow links on command line unless -l or -s */
1048 cur = my_stat(*argv, *argv, !(all_fmt & (STYLE_LONG|LIST_BLOCKS)));
1052 cur->fname_allocated = 0;
1058 /* nfiles _may_ be 0 here - try "ls doesnt_exist" */
1062 /* now that we know how many files there are
1063 * allocate memory for an array to hold dnode pointers
1065 dnp = dnalloc(nfiles);
1066 for (i = 0; /* i < nfiles - detected via !dn below */; i++) {
1067 dnp[i] = dn; /* save pointer to node in array */
1073 if (all_fmt & DISP_NOLIST) {
1074 dnsort(dnp, nfiles);
1075 showfiles(dnp, nfiles);
1077 dnd = splitdnarray(dnp, SPLIT_DIR);
1078 dnf = splitdnarray(dnp, SPLIT_FILE);
1079 dndirs = count_dirs(dnp, SPLIT_DIR);
1080 dnfiles = nfiles - dndirs;
1082 dnsort(dnf, dnfiles);
1083 showfiles(dnf, dnfiles);
1084 if (ENABLE_FEATURE_CLEAN_UP)
1088 dnsort(dnd, dndirs);
1089 showdirs(dnd, dnfiles == 0);
1090 if (ENABLE_FEATURE_CLEAN_UP)
1094 if (ENABLE_FEATURE_CLEAN_UP)