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 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 * To achieve a small memory footprint, this version of 'ls' doesn't do any
23 * file sorting, and only has the most essential command line switches
24 * (i.e., the ones I couldn't live without :-) All features which involve
25 * linking in substantial chunks of libc can be disabled.
27 * Although I don't really want to add new features to this program to
28 * keep it small, I *am* interested to receive bug fixes and ways to make
32 * 1. ls -l of a directory doesn't give "total <blocks>" header
33 * 2. ls of a symlink to a directory doesn't list directory contents
34 * 3. hidden files can make column width too large
36 * NON-OPTIMAL BEHAVIOUR:
37 * 1. autowidth reads directories twice
38 * 2. if you do a short directory listing without filetype characters
39 * appended, there's no need to stat each one
41 * 1. requires lstat (BSD) - how do you do it without?
45 TERMINAL_WIDTH = 80, /* use 79 if terminal has linefold bug */
46 COLUMN_GAP = 2, /* includes the file type char */
49 /************************************************************************/
51 #include <sys/types.h>
63 #include <sys/ioctl.h>
66 #include <fs_secure.h>
67 #include <flask_util.h>
71 #ifdef CONFIG_FEATURE_LS_TIMESTAMPS
76 #define MAJOR(dev) (((dev)>>8)&0xff)
77 #define MINOR(dev) ((dev)&0xff)
80 /* what is the overall style of the listing */
81 #define STYLE_AUTO (0)
82 #define STYLE_COLUMNS (1U<<21) /* fill columns */
83 #define STYLE_LONG (2U<<21) /* one record per line, extended info */
84 #define STYLE_SINGLE (3U<<21) /* one record per line */
86 #define STYLE_MASK STYLE_SINGLE
87 #define STYLE_ONE_RECORD_FLAG STYLE_LONG
89 /* 51306 lrwxrwxrwx 1 root root 2 May 11 01:43 /bin/view -> vi* */
90 /* what file information will be listed */
91 #define LIST_INO (1U<<0)
92 #define LIST_BLOCKS (1U<<1)
93 #define LIST_MODEBITS (1U<<2)
94 #define LIST_NLINKS (1U<<3)
95 #define LIST_ID_NAME (1U<<4)
96 #define LIST_ID_NUMERIC (1U<<5)
97 #define LIST_CONTEXT (1U<<6)
98 #define LIST_SIZE (1U<<7)
99 #define LIST_DEV (1U<<8)
100 #define LIST_DATE_TIME (1U<<9)
101 #define LIST_FULLTIME (1U<<10)
102 #define LIST_FILENAME (1U<<11)
103 #define LIST_SYMLINK (1U<<12)
104 #define LIST_FILETYPE (1U<<13)
105 #define LIST_EXEC (1U<<14)
107 #define LIST_MASK ((LIST_EXEC << 1) - 1)
109 /* what files will be displayed */
110 /* TODO -- We may be able to make DISP_NORMAL 0 to save a bit slot. */
111 #define DISP_NORMAL (1U<<14) /* show normal filenames */
112 #define DISP_DIRNAME (1U<<15) /* 2 or more items? label directories */
113 #define DISP_HIDDEN (1U<<16) /* show filenames starting with . */
114 #define DISP_DOT (1U<<17) /* show . and .. */
115 #define DISP_NOLIST (1U<<18) /* show directory as itself, not contents */
116 #define DISP_RECURSIVE (1U<<19) /* show directory and everything below it */
117 #define DISP_ROWS (1U<<20) /* print across rows */
119 #define DISP_MASK (((DISP_ROWS << 1) - 1) & ~(DISP_NORMAL - 1))
121 #ifdef CONFIG_FEATURE_LS_SORTFILES
122 /* how will the files be sorted */
123 #define SORT_ORDER_FORWARD 0 /* sort in reverse order */
124 #define SORT_ORDER_REVERSE (1U<<27) /* sort in reverse order */
126 #define SORT_NAME 0 /* sort by file name */
127 #define SORT_SIZE (1U<<28) /* sort by file size */
128 #define SORT_ATIME (2U<<28) /* sort by last access time */
129 #define SORT_CTIME (3U<<28) /* sort by last change time */
130 #define SORT_MTIME (4U<<28) /* sort by last modification time */
131 #define SORT_VERSION (5U<<28) /* sort by version */
132 #define SORT_EXT (6U<<28) /* sort by file name extension */
133 #define SORT_DIR (7U<<28) /* sort by file or directory */
135 #define SORT_MASK (7U<<28)
138 #ifdef CONFIG_FEATURE_LS_TIMESTAMPS
139 /* which of the three times will be used */
141 #define TIME_CHANGE (1U<<23)
142 #define TIME_ACCESS (1U<<24)
144 #define TIME_MASK (3U<<23)
147 #ifdef CONFIG_FEATURE_LS_FOLLOWLINKS
148 #define FOLLOW_LINKS (1U<<25)
150 #ifdef CONFIG_FEATURE_HUMAN_READABLE
151 #define LS_DISP_HR (1U<<26)
154 #define LIST_SHORT (LIST_FILENAME)
155 #define LIST_ISHORT (LIST_INO | LIST_FILENAME)
156 #define LIST_LONG (LIST_MODEBITS | LIST_NLINKS | LIST_ID_NAME | LIST_SIZE | \
157 LIST_DATE_TIME | LIST_FILENAME | LIST_SYMLINK)
158 #define LIST_ILONG (LIST_INO | LIST_LONG)
162 #define SPLIT_SUBDIR 2
164 #define TYPEINDEX(mode) (((mode) >> 12) & 0x0f)
165 #define TYPECHAR(mode) ("0pcCd?bB-?l?s???" [TYPEINDEX(mode)])
167 #if defined(CONFIG_FEATURE_LS_FILETYPES) || defined(CONFIG_FEATURE_LS_COLOR)
168 # define APPCHAR(mode) ("\0|\0\0/\0\0\0\0\0@\0=\0\0\0" [TYPEINDEX(mode)])
171 /* colored LS support by JaWi, janwillem.janssen@lxtreme.nl */
172 #ifdef CONFIG_FEATURE_LS_COLOR
173 static int show_color = 0;
175 #define COLOR(mode) ("\000\043\043\043\042\000\043\043"\
176 "\000\000\044\000\043\000\000\040" [TYPEINDEX(mode)])
177 #define ATTR(mode) ("\00\00\01\00\01\00\01\00"\
178 "\00\00\01\00\01\00\00\01" [TYPEINDEX(mode)])
182 * a directory entry and its stat info are stored here
184 struct dnode { /* the basic node */
185 char *name; /* the dir entry name */
186 char *fullname; /* the dir entry name */
187 struct stat dstat; /* the file stat info */
188 #ifdef CONFIG_SELINUX
191 struct dnode *next; /* point at the next node */
193 typedef struct dnode dnode_t;
195 static struct dnode **list_dir(const char *);
196 static struct dnode **dnalloc(int);
197 static int list_single(struct dnode *);
199 static unsigned int all_fmt;
201 #ifdef CONFIG_SELINUX
202 static int is_flask_enabled_flag;
205 #ifdef CONFIG_FEATURE_AUTOWIDTH
206 static int terminal_width = TERMINAL_WIDTH;
207 static unsigned short tabstops = COLUMN_GAP;
209 #define tabstops COLUMN_GAP
210 #define terminal_width TERMINAL_WIDTH
213 static int status = EXIT_SUCCESS;
215 static struct dnode *my_stat(char *fullname, char *name)
219 #ifdef CONFIG_SELINUX
224 #ifdef CONFIG_FEATURE_LS_FOLLOWLINKS
225 if (all_fmt & FOLLOW_LINKS) {
226 #ifdef CONFIG_SELINUX
227 if(is_flask_enabled_flag)
228 rc = stat_secure(fullname, &dstat, &sid);
231 rc = stat(fullname, &dstat);
234 bb_perror_msg("%s", fullname);
235 status = EXIT_FAILURE;
241 #ifdef CONFIG_SELINUX
242 if(is_flask_enabled_flag)
243 rc = lstat_secure(fullname, &dstat, &sid);
246 rc = lstat(fullname, &dstat);
249 bb_perror_msg("%s", fullname);
250 status = EXIT_FAILURE;
255 cur = (struct dnode *) xmalloc(sizeof(struct dnode));
256 cur->fullname = fullname;
259 #ifdef CONFIG_SELINUX
265 /*----------------------------------------------------------------------*/
266 #ifdef CONFIG_FEATURE_LS_COLOR
267 static char fgcolor(mode_t mode)
269 /* Check wheter the file is existing (if so, color it red!) */
270 if (errno == ENOENT) {
273 if (LIST_EXEC && S_ISREG(mode)
274 && (mode & (S_IXUSR | S_IXGRP | S_IXOTH)))
275 return COLOR(0xF000); /* File is executable ... */
279 /*----------------------------------------------------------------------*/
280 static char bgcolor(mode_t mode)
282 if (LIST_EXEC && S_ISREG(mode)
283 && (mode & (S_IXUSR | S_IXGRP | S_IXOTH)))
284 return ATTR(0xF000); /* File is executable ... */
289 /*----------------------------------------------------------------------*/
290 #if defined(CONFIG_FEATURE_LS_FILETYPES) || defined(CONFIG_FEATURE_LS_COLOR)
291 static char append_char(mode_t mode)
293 if (!(all_fmt & LIST_FILETYPE))
295 if ((all_fmt & LIST_EXEC) && S_ISREG(mode)
296 && (mode & (S_IXUSR | S_IXGRP | S_IXOTH)))
298 return APPCHAR(mode);
302 /*----------------------------------------------------------------------*/
304 #define countdirs(A,B) count_dirs((A), (B), 1)
305 #define countsubdirs(A,B) count_dirs((A), (B), 0)
307 static int count_dirs(struct dnode **dn, int nfiles, int notsubdirs)
311 if (dn == NULL || nfiles < 1)
314 for (i = 0; i < nfiles; i++) {
315 if (S_ISDIR(dn[i]->dstat.st_mode)
317 || ((dn[i]->name[0] != '.')
319 && ((dn[i]->name[1] != '.')
320 || dn[i]->name[2])))))
326 static int countfiles(struct dnode **dnp)
334 for (cur = dnp[0]; cur->next != NULL; cur = cur->next)
340 /* get memory to hold an array of pointers */
341 static struct dnode **dnalloc(int num)
348 p = (struct dnode **) xcalloc((size_t) num,
349 (size_t) (sizeof(struct dnode *)));
353 #ifdef CONFIG_FEATURE_LS_RECURSIVE
354 static void dfree(struct dnode **dnp)
356 struct dnode *cur, *next;
362 while (cur != NULL) {
363 free(cur->fullname); /* free the filename */
365 free(cur); /* free the dnode */
368 free(dnp); /* free the array holding the dnode pointers */
372 static struct dnode **splitdnarray(struct dnode **dn, int nfiles, int which)
377 if (dn == NULL || nfiles < 1)
380 /* count how many dirs and regular files there are */
381 if (which == SPLIT_SUBDIR)
382 dncnt = countsubdirs(dn, nfiles);
384 dncnt = countdirs(dn, nfiles); /* assume we are looking for dirs */
385 if (which == SPLIT_FILE)
386 dncnt = nfiles - dncnt; /* looking for files */
389 /* allocate a file array and a dir array */
390 dnp = dnalloc(dncnt);
392 /* copy the entrys into the file or dir array */
393 for (d = i = 0; i < nfiles; i++) {
394 if (S_ISDIR(dn[i]->dstat.st_mode)) {
395 if (which & (SPLIT_DIR|SPLIT_SUBDIR)) {
396 if ((which & SPLIT_DIR)
397 || ((dn[i]->name[0] != '.')
399 && ((dn[i]->name[1] != '.')
400 || dn[i]->name[2])))) {
404 } else if (!(which & (SPLIT_DIR|SPLIT_SUBDIR))) {
411 /*----------------------------------------------------------------------*/
412 #ifdef CONFIG_FEATURE_LS_SORTFILES
413 static int sortcmp(struct dnode *d1, struct dnode *d2)
415 unsigned int sort_opts = all_fmt & SORT_MASK;
418 dif = 0; /* assume SORT_NAME */
419 if (sort_opts == SORT_SIZE) {
420 dif = (int) (d2->dstat.st_size - d1->dstat.st_size);
421 } else if (sort_opts == SORT_ATIME) {
422 dif = (int) (d2->dstat.st_atime - d1->dstat.st_atime);
423 } else if (sort_opts == SORT_CTIME) {
424 dif = (int) (d2->dstat.st_ctime - d1->dstat.st_ctime);
425 } else if (sort_opts == SORT_MTIME) {
426 dif = (int) (d2->dstat.st_mtime - d1->dstat.st_mtime);
427 } else if (sort_opts == SORT_DIR) {
428 dif = S_ISDIR(d2->dstat.st_mode) - S_ISDIR(d1->dstat.st_mode);
429 /* } else if (sort_opts == SORT_VERSION) { */
430 /* } else if (sort_opts == SORT_EXT) { */
434 /* sort by name- may be a tie_breaker for time or size cmp */
435 #ifdef CONFIG_LOCALE_SUPPORT
436 dif = strcoll(d1->name, d2->name);
438 dif = strcmp(d1->name, d2->name);
442 if (all_fmt & SORT_ORDER_REVERSE) {
448 /*----------------------------------------------------------------------*/
449 static void shellsort(struct dnode **dn, int size)
454 /* shell short the array */
455 if (dn == NULL || size < 2)
458 for (gap = size / 2; gap > 0; gap /= 2) {
459 for (i = gap; i < size; i++) {
460 for (j = i - gap; j >= 0; j -= gap) {
461 if (sortcmp(dn[j], dn[j + gap]) <= 0)
463 /* they are out of order, swap them */
473 /*----------------------------------------------------------------------*/
474 static void showfiles(struct dnode **dn, int nfiles)
476 int i, ncols, nrows, row, nc;
479 int column_width = 0; /* for STYLE_LONG and STYLE_SINGLE not used */
481 if (dn == NULL || nfiles < 1)
484 if (all_fmt & STYLE_ONE_RECORD_FLAG) {
487 /* find the longest file name- use that as the column width */
488 for (i = 0; i < nfiles; i++) {
489 int len = strlen(dn[i]->name) +
490 #ifdef CONFIG_SELINUX
491 ((all_fmt & LIST_CONTEXT) ? 33 : 0) +
493 ((all_fmt & LIST_INO) ? 8 : 0) +
494 ((all_fmt & LIST_BLOCKS) ? 5 : 0);
495 if (column_width < len)
498 column_width += tabstops;
499 ncols = (int) (terminal_width / column_width);
503 nrows = nfiles / ncols;
504 if ((nrows * ncols) < nfiles)
505 nrows++; /* round up fractionals */
511 for (row = 0; row < nrows; row++) {
512 for (nc = 0; nc < ncols; nc++) {
513 /* reach into the array based on the column and row */
514 i = (nc * nrows) + row; /* assume display by column */
515 if (all_fmt & DISP_ROWS)
516 i = (row * ncols) + nc; /* display across row */
525 nexttab = column + column_width;
526 column += list_single(dn[i]);
534 /*----------------------------------------------------------------------*/
535 static void showdirs(struct dnode **dn, int ndirs, int first)
538 struct dnode **subdnp;
540 #ifdef CONFIG_FEATURE_LS_RECURSIVE
545 if (dn == NULL || ndirs < 1)
548 for (i = 0; i < ndirs; i++) {
549 if (all_fmt & (DISP_DIRNAME | DISP_RECURSIVE)) {
553 printf("%s:\n", dn[i]->fullname);
555 subdnp = list_dir(dn[i]->fullname);
556 nfiles = countfiles(subdnp);
558 /* list all files at this level */
559 #ifdef CONFIG_FEATURE_LS_SORTFILES
560 shellsort(subdnp, nfiles);
562 showfiles(subdnp, nfiles);
563 #ifdef CONFIG_FEATURE_LS_RECURSIVE
564 if (all_fmt & DISP_RECURSIVE) {
565 /* recursive- list the sub-dirs */
566 dnd = splitdnarray(subdnp, nfiles, SPLIT_SUBDIR);
567 dndirs = countsubdirs(subdnp, nfiles);
569 #ifdef CONFIG_FEATURE_LS_SORTFILES
570 shellsort(dnd, dndirs);
572 showdirs(dnd, dndirs, 0);
573 free(dnd); /* free the array of dnode pointers to the dirs */
576 dfree(subdnp); /* free the dnodes and the fullname mem */
582 /*----------------------------------------------------------------------*/
583 static struct dnode **list_dir(const char *path)
585 struct dnode *dn, *cur, **dnp;
586 struct dirent *entry;
597 bb_perror_msg("%s", path);
598 status = EXIT_FAILURE;
599 return (NULL); /* could not open the dir */
601 while ((entry = readdir(dir)) != NULL) {
604 /* are we going to list the file- it may be . or .. or a hidden file */
605 if (entry->d_name[0] == '.') {
606 if ((entry->d_name[1] == 0 || (
607 entry->d_name[1] == '.'
608 && entry->d_name[2] == 0))
609 && !(all_fmt & DISP_DOT))
611 if (!(all_fmt & DISP_HIDDEN))
614 fullname = concat_path_file(path, entry->d_name);
615 cur = my_stat(fullname, strrchr(fullname, '/') + 1);
624 /* now that we know how many files there are
625 ** allocate memory for an array to hold dnode pointers
629 dnp = dnalloc(nfiles);
630 for (i = 0, cur = dn; i < nfiles; i++) {
631 dnp[i] = cur; /* save pointer to node in array */
638 /*----------------------------------------------------------------------*/
639 static int list_single(struct dnode *dn)
643 #ifdef CONFIG_FEATURE_LS_USERNAME
646 #ifdef CONFIG_FEATURE_LS_TIMESTAMPS
650 #if defined(CONFIG_FEATURE_LS_FILETYPES) || defined (CONFIG_FEATURE_LS_COLOR)
655 if (dn->fullname == NULL)
658 #ifdef CONFIG_FEATURE_LS_TIMESTAMPS
659 ttime = dn->dstat.st_mtime; /* the default time */
660 if (all_fmt & TIME_ACCESS)
661 ttime = dn->dstat.st_atime;
662 if (all_fmt & TIME_CHANGE)
663 ttime = dn->dstat.st_ctime;
664 filetime = ctime(&ttime);
666 #ifdef CONFIG_FEATURE_LS_FILETYPES
667 append = append_char(dn->dstat.st_mode);
670 for (i = 0; i <= 31; i++) {
671 switch (all_fmt & (1 << i)) {
673 column += printf("%7ld ", (long int) dn->dstat.st_ino);
676 #if _FILE_OFFSET_BITS == 64
677 column += printf("%4lld ", dn->dstat.st_blocks >> 1);
679 column += printf("%4ld ", dn->dstat.st_blocks >> 1);
683 column += printf("%-10s ", (char *) bb_mode_string(dn->dstat.st_mode));
686 column += printf("%4ld ", (long) dn->dstat.st_nlink);
689 #ifdef CONFIG_FEATURE_LS_USERNAME
690 my_getpwuid(scratch, dn->dstat.st_uid);
691 printf("%-8.8s ", scratch);
692 my_getgrgid(scratch, dn->dstat.st_gid);
693 printf("%-8.8s", scratch);
697 case LIST_ID_NUMERIC:
698 column += printf("%-8d %-8d", dn->dstat.st_uid, dn->dstat.st_gid);
702 if (S_ISBLK(dn->dstat.st_mode) || S_ISCHR(dn->dstat.st_mode)) {
703 column += printf("%4d, %3d ", (int) MAJOR(dn->dstat.st_rdev),
704 (int) MINOR(dn->dstat.st_rdev));
706 #ifdef CONFIG_FEATURE_HUMAN_READABLE
707 if (all_fmt & LS_DISP_HR) {
708 column += printf("%9s ",
709 make_human_readable_str(dn->dstat.st_size, 1, 0));
713 #if _FILE_OFFSET_BITS == 64
714 column += printf("%9lld ", (long long) dn->dstat.st_size);
716 column += printf("%9ld ", dn->dstat.st_size);
721 #ifdef CONFIG_FEATURE_LS_TIMESTAMPS
723 printf("%24.24s ", filetime);
727 if ((all_fmt & LIST_FULLTIME) == 0) {
728 age = time(NULL) - ttime;
729 printf("%6.6s ", filetime + 4);
730 if (age < 3600L * 24 * 365 / 2 && age > -15 * 60) {
731 /* hh:mm if less than 6 months old */
732 printf("%5.5s ", filetime + 11);
734 printf(" %4.4s ", filetime + 20);
740 #ifdef CONFIG_SELINUX
744 int len = sizeof(context);
745 if(security_sid_to_context(dn->sid, context, &len))
747 strcpy(context, "unknown");
750 printf("%-32s ", context);
751 column += MAX(33, len);
756 #ifdef CONFIG_FEATURE_LS_COLOR
758 if (show_color && !lstat(dn->fullname, &info)) {
759 printf("\033[%d;%dm", bgcolor(info.st_mode),
760 fgcolor(info.st_mode));
763 column += printf("%s", dn->name);
764 #ifdef CONFIG_FEATURE_LS_COLOR
771 if (S_ISLNK(dn->dstat.st_mode)) {
772 char *lpath = xreadlink(dn->fullname);
776 #if defined(CONFIG_FEATURE_LS_FILETYPES) || defined (CONFIG_FEATURE_LS_COLOR)
777 if (!stat(dn->fullname, &info)) {
778 append = append_char(info.st_mode);
781 #ifdef CONFIG_FEATURE_LS_COLOR
784 printf("\033[%d;%dm", bgcolor(info.st_mode),
785 fgcolor(info.st_mode));
788 column += printf("%s", lpath) + 4;
789 #ifdef CONFIG_FEATURE_LS_COLOR
798 #ifdef CONFIG_FEATURE_LS_FILETYPES
800 if (append != '\0') {
801 printf("%1c", append);
812 /*----------------------------------------------------------------------*/
814 /* "[-]Cadil1", POSIX mandated options, busybox always supports */
815 /* "[-]gnsx", POSIX non-mandated options, busybox always supports */
816 /* "[-]Ak" GNU options, busybox always supports */
817 /* "[-]FLRctur", POSIX mandated options, busybox optionally supports */
818 /* "[-]p", POSIX non-mandated options, busybox optionally supports */
819 /* "[-]SXvThw", GNU options, busybox optionally supports */
820 /* "[-]K", SELinux mandated options, busybox optionally supports */
821 /* "[-]e", I think we made this one up */
823 #ifdef CONFIG_FEATURE_LS_TIMESTAMPS
824 # define LS_STR_TIMESTAMPS "cetu"
826 # define LS_STR_TIMESTAMPS ""
829 #ifdef CONFIG_FEATURE_LS_SORTFILES
830 # define LS_STR_SORTFILES "SXrv"
832 # define LS_STR_SORTFILES ""
835 #ifdef CONFIG_FEATURE_LS_FILETYPES
836 # define LS_STR_FILETYPES "Fp"
838 # define LS_STR_FILETYPES ""
841 #ifdef CONFIG_FEATURE_LS_FOLLOWLINKS
842 # define LS_STR_FOLLOW_LINKS "L"
844 # define LS_STR_FOLLOW_LINKS ""
847 #ifdef CONFIG_FEATURE_LS_RECURSIVE
848 # define LS_STR_RECURSIVE "R"
850 # define LS_STR_RECURSIVE ""
853 #ifdef CONFIG_FEATURE_HUMAN_READABLE
854 # define LS_STR_HUMAN_READABLE "h"
856 # define LS_STR_HUMAN_READABLE ""
859 #ifdef CONFIG_SELINUX
860 # define LS_STR_SELINUX "K"
862 # define LS_STR_SELINUX ""
865 #ifdef CONFIG_FEATURE_AUTOWIDTH
866 # define LS_STR_AUTOWIDTH "T:w:"
868 # define LS_STR_AUTOWIDTH ""
871 static const char ls_options[]="Cadil1gnsxAk" \
875 LS_STR_FOLLOW_LINKS \
877 LS_STR_HUMAN_READABLE \
881 #define LIST_MASK_TRIGGER LIST_SHORT
882 #define STYLE_MASK_TRIGGER STYLE_MASK
883 #define SORT_MASK_TRIGGER SORT_MASK
884 #define DISP_MASK_TRIGGER DISP_ROWS
885 #define TIME_MASK_TRIGGER TIME_MASK
887 static const unsigned opt_flags[] = {
888 LIST_SHORT | STYLE_COLUMNS, /* C */
889 DISP_HIDDEN | DISP_DOT, /* a */
892 LIST_LONG | STYLE_LONG, /* l - remember LS_DISP_HR in mask! */
893 LIST_SHORT | STYLE_SINGLE, /* 1 */
895 LIST_ID_NUMERIC, /* n */
899 #ifdef CONFIG_SELINUX
900 LIST_CONTEXT, /* k */
904 #ifdef CONFIG_FEATURE_LS_TIMESTAMPS
905 # ifdef CONFIG_FEATURE_LS_SORTFILES
906 TIME_CHANGE | SORT_CTIME, /* c */
910 LIST_FULLTIME, /* e */
911 # ifdef CONFIG_FEATURE_LS_SORTFILES
914 0, /* t - ignored -- is this correct? */
916 # ifdef CONFIG_FEATURE_LS_SORTFILES
917 TIME_ACCESS | SORT_ATIME, /* u */
922 #ifdef CONFIG_FEATURE_LS_SORTFILES
923 SORT_ORDER_REVERSE, /* r */
925 SORT_VERSION, /* v */
928 #ifdef CONFIG_FEATURE_LS_FILETYPES
929 LIST_FILETYPE | LIST_EXEC, /* F */
930 LIST_FILETYPE, /* p */
932 #ifdef CONFIG_FEATURE_LS_FOLLOWLINKS
933 FOLLOW_LINKS, /* L */
935 #ifdef CONFIG_FEATURE_LS_RECURSIVE
936 DISP_RECURSIVE, /* R */
938 #ifdef CONFIG_FEATURE_HUMAN_READABLE
941 #ifdef CONFIG_SELINUX
942 LIST_MODEBITS|LIST_NLINKS|LIST_CONTEXT|LIST_SIZE|LIST_DATE_TIME, /* K */
948 /*----------------------------------------------------------------------*/
950 extern int ls_main(int argc, char **argv)
965 #ifdef CONFIG_FEATURE_AUTOWIDTH
966 char *tabstops_str = NULL;
967 char *terminal_width_str = NULL;
970 #ifdef CONFIG_SELINUX
971 is_flask_enabled_flag = is_flask_enabled();
974 all_fmt = LIST_SHORT | DISP_NORMAL | STYLE_AUTO
975 #ifdef CONFIG_FEATURE_LS_TIMESTAMPS
978 #ifdef CONFIG_FEATURE_LS_SORTFILES
979 | SORT_NAME | SORT_ORDER_FORWARD
983 #ifdef CONFIG_FEATURE_AUTOWIDTH
984 /* Obtain the terminal width. */
985 get_terminal_width_height(0, &terminal_width, NULL);
990 #ifdef CONFIG_FEATURE_LS_COLOR
991 if (isatty(fileno(stdout)))
995 /* process options */
996 #ifdef CONFIG_FEATURE_AUTOWIDTH
997 opt = bb_getopt_ulflags(argc, argv, ls_options, &tabstops_str, &terminal_width_str);
999 tabstops = atoi(tabstops_str);
1001 if (terminal_width_str) {
1002 terminal_width = atoi(terminal_width_str);
1005 opt = bb_getopt_ulflags(argc, argv, ls_options);
1007 for (i = 0; opt_flags[i] != (1U<<31); i++) {
1008 if (opt & (1 << i)) {
1009 unsigned int flags = opt_flags[i];
1010 if (flags & LIST_MASK_TRIGGER) {
1011 all_fmt &= ~LIST_MASK;
1013 if (flags & STYLE_MASK_TRIGGER) {
1014 all_fmt &= ~STYLE_MASK;
1016 #ifdef CONFIG_FEATURE_LS_SORTFILES
1017 if (flags & SORT_MASK_TRIGGER) {
1018 all_fmt &= ~SORT_MASK;
1021 if (flags & DISP_MASK_TRIGGER) {
1022 all_fmt &= ~DISP_MASK;
1024 #ifdef CONFIG_FEATURE_LS_TIMESTAMPS
1025 if (flags & TIME_MASK_TRIGGER) {
1026 all_fmt &= ~TIME_MASK;
1029 if (flags & LIST_CONTEXT) {
1030 all_fmt |= STYLE_SINGLE;
1032 #ifdef CONFIG_FEATURE_HUMAN_READABLE
1034 all_fmt &= ~LS_DISP_HR;
1041 /* sort out which command line options take precedence */
1042 #ifdef CONFIG_FEATURE_LS_RECURSIVE
1043 if (all_fmt & DISP_NOLIST)
1044 all_fmt &= ~DISP_RECURSIVE; /* no recurse if listing only dir */
1046 #if defined (CONFIG_FEATURE_LS_TIMESTAMPS) && defined (CONFIG_FEATURE_LS_SORTFILES)
1047 if (all_fmt & TIME_CHANGE)
1048 all_fmt = (all_fmt & ~SORT_MASK) | SORT_CTIME;
1049 if (all_fmt & TIME_ACCESS)
1050 all_fmt = (all_fmt & ~SORT_MASK) | SORT_ATIME;
1052 if ((all_fmt & STYLE_MASK) != STYLE_LONG) /* only for long list */
1053 all_fmt &= ~(LIST_ID_NUMERIC|LIST_FULLTIME|LIST_ID_NAME|LIST_ID_NUMERIC);
1054 #ifdef CONFIG_FEATURE_LS_USERNAME
1055 if ((all_fmt & STYLE_MASK) == STYLE_LONG && (all_fmt & LIST_ID_NUMERIC))
1056 all_fmt &= ~LIST_ID_NAME; /* don't list names if numeric uid */
1059 /* choose a display format */
1060 if ((all_fmt & STYLE_MASK) == STYLE_AUTO)
1062 all_fmt = (all_fmt & ~STYLE_MASK)
1063 | (isatty(fileno(stdout)) ? STYLE_COLUMNS : STYLE_SINGLE);
1065 all_fmt |= (isatty(fileno(stdout)) ? STYLE_COLUMNS : STYLE_SINGLE);
1069 * when there are no cmd line args we have to supply a default "." arg.
1070 * we will create a second argv array, "av" that will hold either
1071 * our created "." arg, or the real cmd line args. The av array
1072 * just holds the pointers- we don't move the date the pointers
1075 ac = argc - optind; /* how many cmd line args are left */
1077 av = (char **) xcalloc((size_t) 1, (size_t) (sizeof(char *)));
1078 av[0] = bb_xstrdup(".");
1081 av = (char **) xcalloc((size_t) ac, (size_t) (sizeof(char *)));
1082 for (oi = 0; oi < ac; oi++) {
1083 av[oi] = argv[optind++]; /* copy pointer to real cmd line arg */
1087 /* now, everything is in the av array */
1089 all_fmt |= DISP_DIRNAME; /* 2 or more items? label directories */
1091 /* stuff the command line file names into an dnode array */
1093 for (oi = 0; oi < ac; oi++) {
1094 char *fullname = bb_xstrdup(av[oi]);
1096 cur = my_stat(fullname, fullname);
1104 /* now that we know how many files there are
1105 ** allocate memory for an array to hold dnode pointers
1107 dnp = dnalloc(nfiles);
1108 for (i = 0, cur = dn; i < nfiles; i++) {
1109 dnp[i] = cur; /* save pointer to node in array */
1114 if (all_fmt & DISP_NOLIST) {
1115 #ifdef CONFIG_FEATURE_LS_SORTFILES
1116 shellsort(dnp, nfiles);
1119 showfiles(dnp, nfiles);
1121 dnd = splitdnarray(dnp, nfiles, SPLIT_DIR);
1122 dnf = splitdnarray(dnp, nfiles, SPLIT_FILE);
1123 dndirs = countdirs(dnp, nfiles);
1124 dnfiles = nfiles - dndirs;
1126 #ifdef CONFIG_FEATURE_LS_SORTFILES
1127 shellsort(dnf, dnfiles);
1129 showfiles(dnf, dnfiles);
1132 #ifdef CONFIG_FEATURE_LS_SORTFILES
1133 shellsort(dnd, dndirs);
1135 showdirs(dnd, dndirs, dnfiles == 0);