3 * Copyright 2012 Andre Renaud <andre@bluewatersys.com>
4 * Copyright 2012 Rob Landley <rob@landley.net>
6 * See http://opengroup.org/onlinepubs/9699919799/utilities/ls.html
8 USE_LS(NEWTOY(ls, USE_LS_COLOR("(color):;")USE_LS_Z("Z")"goACFHLRSacdfiklmnpqrstux1[-Cxm1][-Cxml][-Cxmo][-Cxmg][-cu][-ftS][-HL]", TOYFLAG_BIN|TOYFLAG_LOCALE))
14 usage: ls [-ACFHLRSacdfiklmnpqrstux1] [directory...]
18 -a all files including .hidden -c use ctime for timestamps
19 -d directory, not contents -i inode number
20 -k block sizes in kilobytes -p put a '/' after dir names
21 -q unprintable chars as '?' -s size (in blocks)
22 -u use access time for timestamps -A list all files but . and ..
23 -H follow command line symlinks -L follow symlinks
24 -R recursively list files in subdirs -F append /dir *exe @sym |FIFO
27 -1 list one file per line -C columns (sorted vertically)
28 -g like -l but no owner -l long (show full details)
29 -m comma separated -n like -l but numeric uid/gid
30 -o like -l but no group -x columns (horizontal sort)
32 sorting (default is alphabetical):
33 -f unsorted -r reverse -t timestamp -S size
38 depends on LS && (TOYBOX_SELINUX || TOYBOX_SMACK)
49 usage: ls --color[=auto]
51 --color device=yellow symlink=turquoise/red dir=blue socket=purple
52 files: exe=green suid=red suidfile=redback stickydir=greenback
53 =auto means detect if output is a tty.
59 // test sst output (suid/sticky in ls flaglist)
61 // ls -lR starts .: then ./subdir:
66 struct dirtree *files;
68 unsigned screen_width;
70 char uid_buf[12], gid_buf[12];
73 // Does two things: 1) Returns wcwidth(utf8) version of strlen,
74 // 2) replaces unprintable characters input string with '?' wildcard char.
77 int total = 0, width, len;
80 if (!CFG_TOYBOX_I18N) {
82 if (toys.optflags & FLAG_q) for (; *s; s++) if (!isprint(*s)) *s = '?';
84 len = mbrtowc(&c, s, MB_CUR_MAX, 0);
85 if (len < 1 || (width = wcwidth(c)) < 0) {
87 if (toys.optflags & FLAG_q) *s = '?';
98 void dlist_to_dirtree(struct dirtree *parent)
100 // Turn double_list into dirtree
101 struct dirtree *dt = parent->child;
103 dt->parent->next = NULL;
111 static char endtype(struct stat *st)
113 mode_t mode = st->st_mode;
114 if ((toys.optflags&(FLAG_F|FLAG_p)) && S_ISDIR(mode)) return '/';
115 if (toys.optflags & FLAG_F) {
116 if (S_ISLNK(mode)) return '@';
117 if (S_ISREG(mode) && (mode&0111)) return '*';
118 if (S_ISFIFO(mode)) return '|';
119 if (S_ISSOCK(mode)) return '=';
124 static char *getusername(uid_t uid)
126 struct passwd *pw = getpwuid(uid);
128 sprintf(TT.uid_buf, "%u", (unsigned)uid);
129 return pw ? pw->pw_name : TT.uid_buf;
132 static char *getgroupname(gid_t gid)
134 struct group *gr = getgrgid(gid);
136 sprintf(TT.gid_buf, "%u", (unsigned)gid);
137 return gr ? gr->gr_name : TT.gid_buf;
140 static int numlen(long long ll)
142 return snprintf(0, 0, "%llu", ll);
145 // measure/print SELinux/smack security label. (If pad=0, just measure.)
146 static unsigned seclabel(struct dirtree *dt, int pad)
148 if (CFG_TOYBOX_SELINUX) {
149 char* path = dirtree_path(dt, 0);
153 lgetfilecon(path, &label);
159 if (pad) printf(" %*s "+(pad>0), pad, label);
164 } else if (CFG_TOYBOX_SMACK) {
165 int fd = openat(dirtree_parentfd(dt), dt->name, O_PATH|O_NOFOLLOW);
166 char buf[SMACK_LABEL_LEN+1];
171 len = fgetxattr(fd, XATTR_NAME_SMACK, pad?buf:0, pad?SMACK_LABEL_LEN:0);
174 if (len<1 || len>SMACK_LABEL_LEN) len = 0;
177 if (pad) printf(" %*s "+(pad>0), pad, buf);
183 // Figure out size of printable entry fields for display indent/wrap
185 static void entrylen(struct dirtree *dt, unsigned *len)
187 struct stat *st = &(dt->st);
188 unsigned flags = toys.optflags;
190 *len = strwidth(dt->name);
191 if (endtype(st)) ++*len;
192 if (flags & FLAG_m) ++*len;
194 len[1] = (flags & FLAG_i) ? numlen(st->st_ino) : 0;
195 if (flags & (FLAG_l|FLAG_o|FLAG_n|FLAG_g)) {
196 unsigned fn = flags & FLAG_n;
197 len[2] = numlen(st->st_nlink);
198 len[3] = fn ? numlen(st->st_uid) : strwidth(getusername(st->st_uid));
199 len[4] = fn ? numlen(st->st_gid) : strwidth(getgroupname(st->st_gid));
200 if (S_ISBLK(st->st_mode) || S_ISCHR(st->st_mode)) {
201 // cheating slightly here: assuming minor is always 3 digits to avoid
202 // tracking another column
203 len[5] = numlen(major(st->st_rdev))+5;
204 } else len[5] = numlen(st->st_size);
207 len[6] = (flags & FLAG_s) ? numlen(st->st_blocks) : 0;
209 if (CFG_LS_Z && (flags & FLAG_Z)) len[7] = seclabel(dt, 0);
212 static int compare(void *a, void *b)
214 struct dirtree *dta = *(struct dirtree **)a;
215 struct dirtree *dtb = *(struct dirtree **)b;
216 int ret = 0, reverse = (toys.optflags & FLAG_r) ? -1 : 1;
218 if (toys.optflags & FLAG_S) {
219 if (dta->st.st_size > dtb->st.st_size) ret = -1;
220 else if (dta->st.st_size < dtb->st.st_size) ret = 1;
222 if (toys.optflags & FLAG_t) {
223 if (dta->st.st_mtime > dtb->st.st_mtime) ret = -1;
224 else if (dta->st.st_mtime < dtb->st.st_mtime) ret = 1;
226 if (!ret) ret = strcmp(dta->name, dtb->name);
227 return ret * reverse;
230 // callback from dirtree_recurse() determining how to handle this entry.
232 static int filter(struct dirtree *new)
234 int flags = toys.optflags;
236 // Special case to handle enormous dirs without running out of memory.
237 if (flags == (FLAG_1|FLAG_f)) {
238 xprintf("%s\n", new->name);
242 if (flags & FLAG_u) new->st.st_mtime = new->st.st_atime;
243 if (flags & FLAG_c) new->st.st_mtime = new->st.st_ctime;
244 if (flags & FLAG_k) new->st.st_blocks = (new->st.st_blocks + 1) / 2;
246 if (flags & (FLAG_a|FLAG_f)) return DIRTREE_SAVE;
247 if (!(flags & FLAG_A) && new->name[0]=='.') return 0;
249 return dirtree_notdotdot(new) & DIRTREE_SAVE;
252 // For column view, calculate horizontal position (for padding) and return
253 // index of next entry to display.
255 static unsigned long next_column(unsigned long ul, unsigned long dtlen,
256 unsigned columns, unsigned *xpos)
258 unsigned long transition;
259 unsigned height, widecols;
261 // Horizontal sort is easy
262 if (!(toys.optflags & FLAG_C)) {
263 *xpos = ul % columns;
269 // For -x, calculate height of display, rounded up
270 height = (dtlen+columns-1)/columns;
272 // Sanity check: does wrapping render this column count impossible
273 // due to the right edge wrapping eating a whole row?
274 if (height*columns - dtlen >= height) {
279 // Uneven rounding goes along right edge
280 widecols = dtlen % height;
281 if (!widecols) widecols = height;
282 transition = widecols * columns;
283 if (ul < transition) {
284 *xpos = ul % columns;
285 return (*xpos*height) + (ul/columns);
289 *xpos = ul % (columns-1);
291 return (*xpos*height) + widecols + (ul/(columns-1));
294 int color_from_mode(mode_t mode)
298 if (S_ISDIR(mode)) color = 256+34;
299 else if (S_ISLNK(mode)) color = 256+36;
300 else if (S_ISBLK(mode) || S_ISCHR(mode)) color = 256+33;
301 else if (S_ISREG(mode) && (mode&0111)) color = 256+32;
302 else if (S_ISFIFO(mode)) color = 33;
303 else if (S_ISSOCK(mode)) color = 256+35;
308 // Display a list of dirtree entries, according to current format
309 // Output types -1, -l, -C, or stream
311 static void listfiles(int dirfd, struct dirtree *indir)
313 struct dirtree *dt, **sort;
314 unsigned long dtlen, ul = 0;
315 unsigned width, flags = toys.optflags, totals[8], len[8], totpad = 0,
316 *colsizes = (unsigned *)(toybuf+260), columns = (sizeof(toybuf)-260)/4;
318 memset(totals, 0, sizeof(totals));
320 // Silently descend into single directory listed by itself on command line.
321 // In this case only show dirname/total header when given -R.
322 if (!indir->parent) {
323 if (!(dt = indir->child)) return;
324 if (S_ISDIR(dt->st.st_mode) && !dt->next && !(flags & FLAG_d)) {
326 listfiles(open(dt->name, 0), dt);
330 // Read directory contents. We dup() the fd because this will close it.
331 indir->data = dup(dirfd);
332 dirtree_recurse(indir, filter, DIRTREE_SYMFOLLOW*!!(flags&FLAG_L));
335 // Copy linked list to array and sort it. Directories go in array because
336 // we visit them in sorted order too. (The nested loops let us measure and
337 // fill with the same inner loop.)
338 for (sort = 0;;sort = xmalloc(dtlen * sizeof(void *))) {
339 for (dtlen = 0, dt = indir->child; dt; dt = dt->next, dtlen++)
340 if (sort) sort[dtlen] = dt;
344 // Label directory if not top of tree, or if -R
345 if (indir->parent && (!indir->extra || (flags & FLAG_R)))
347 char *path = dirtree_path(indir, 0);
349 if (TT.nl_title++) xputc('\n');
350 xprintf("%s:\n", path);
354 // Measure each entry to work out whitespace padding and total blocks
355 if (!(flags & FLAG_f)) {
356 unsigned long long blocks = 0;
358 qsort(sort, dtlen, sizeof(void *), (void *)compare);
359 for (ul = 0; ul<dtlen; ul++) {
360 entrylen(sort[ul], len);
361 for (width = 0; width<8; width++)
362 if (len[width]>totals[width]) totals[width] = len[width];
363 blocks += sort[ul]->st.st_blocks;
365 totpad = totals[1]+!!totals[1]+totals[6]+!!totals[6]+totals[7]+!!totals[7];
366 if (flags & (FLAG_l|FLAG_o|FLAG_n|FLAG_g|FLAG_s) && indir->parent)
367 xprintf("total %llu\n", blocks);
370 // Find largest entry in each field for display alignment
371 if (flags & (FLAG_C|FLAG_x)) {
373 // columns can't be more than toybuf can hold, or more than files,
374 // or > 1/2 screen width (one char filename, one space).
375 if (columns > TT.screen_width/2) columns = TT.screen_width/2;
376 if (columns > dtlen) columns = dtlen;
378 // Try to fit as many columns as we can, dropping down by one each time
379 for (;columns > 1; columns--) {
380 unsigned c, totlen = columns;
382 memset(colsizes, 0, columns*sizeof(unsigned));
383 for (ul=0; ul<dtlen; ul++) {
384 entrylen(sort[next_column(ul, dtlen, columns, &c)], len);
386 if (c == columns) break;
387 // Expand this column if necessary, break if that puts us over budget
388 if (*len > colsizes[c]) {
389 totlen += (*len)-colsizes[c];
391 if (totlen > TT.screen_width) break;
394 // If everything fit, stop here
395 if (ul == dtlen) break;
399 // Loop through again to produce output.
400 memset(toybuf, ' ', 256);
402 for (ul = 0; ul<dtlen; ul++) {
403 unsigned curcol, color = 0;
404 unsigned long next = next_column(ul, dtlen, columns, &curcol);
405 struct stat *st = &(sort[next]->st);
406 mode_t mode = st->st_mode;
407 char et = endtype(st);
409 // Skip directories at the top of the tree when -d isn't set
410 if (S_ISDIR(mode) && !indir->parent && !(flags & FLAG_d)) continue;
413 // Handle padding and wrapping for display purposes
414 entrylen(sort[next], len);
416 if (flags & FLAG_m) xputc(',');
417 if (flags & (FLAG_C|FLAG_x)) {
418 if (!curcol) xputc('\n');
419 } else if ((flags & FLAG_1) || width+1+*len > TT.screen_width) {
430 xprintf("%*lu ", totals[1], (unsigned long)st->st_ino);
432 xprintf("%*lu ", totals[6], (unsigned long)st->st_blocks);
434 if (flags & (FLAG_l|FLAG_o|FLAG_n|FLAG_g)) {
436 char perm[11], thyme[64], *usr, *upad, *grp, *grpad;
438 mode_to_string(mode, perm);
440 if (flags&FLAG_o) grp = grpad = toybuf+256;
442 if (flags&FLAG_n) sprintf(grp = thyme, "%u", (unsigned)st->st_gid);
443 else strwidth(grp = getgroupname(st->st_gid));
444 grpad = toybuf+256-(totals[4]-len[4]);
447 if (flags&FLAG_g) usr = upad = toybuf+256;
449 upad = toybuf+255-(totals[3]-len[3]);
450 if (flags&FLAG_n) sprintf(usr = TT.uid_buf, "%u", (unsigned)st->st_uid);
451 else strwidth(usr = getusername(st->st_uid));
454 // Coerce the st types into something we know we can print.
455 printf("%s% *ld %s%s%s%s", perm, totals[2]+1, (long)st->st_nlink,
456 usr, upad, grp, grpad);
458 if (CFG_LS_Z && (flags & FLAG_Z)) seclabel(sort[next], -(int)totals[7]);
460 if (S_ISCHR(st->st_mode) || S_ISBLK(st->st_mode))
461 printf("% *d,% 4d", totals[5]-4, major(st->st_rdev),minor(st->st_rdev));
462 else printf("% *lld", totals[5]+1, (long long)st->st_size);
464 tm = localtime(&(st->st_mtime));
465 strftime(thyme, sizeof(thyme), "%F %H:%M", tm);
466 xprintf(" %s ", thyme);
467 } else if (CFG_LS_Z && (flags & FLAG_Z)) seclabel(sort[next], totals[7]);
469 if (flags & FLAG_color) {
470 color = color_from_mode(st->st_mode);
471 if (color) printf("\033[%d;%dm", color>>8, color&255);
474 if (flags & FLAG_q) {
476 for (p=sort[next]->name; *p; p++) fputc(isprint(*p) ? *p : '?', stdout);
477 } else xprintf("%s", sort[next]->name);
478 if (color) xprintf("\033[0m");
480 if ((flags & (FLAG_l|FLAG_o|FLAG_n|FLAG_g)) && S_ISLNK(mode)) {
482 if (flags & FLAG_color) {
485 if (fstatat(dirfd, sort[next]->symlink, &st2, 0)) color = 256+31;
486 else color = color_from_mode(st2.st_mode);
488 if (color) printf("\033[%d;%dm", color>>8, color&255);
491 printf("%s", sort[next]->symlink);
492 if (color) printf("\033[0m");
498 if (flags & (FLAG_C|FLAG_x)) {
499 curcol = colsizes[curcol]-(*len)-totpad;
500 if (curcol < 255) xprintf("%s", toybuf+255-curcol);
504 if (width) xputc('\n');
506 // Free directory entries, recursing first if necessary.
508 for (ul = 0; ul<dtlen; free(sort[ul++])) {
509 if ((flags & FLAG_d) || !S_ISDIR(sort[ul]->st.st_mode)
510 || !dirtree_notdotdot(sort[ul])) continue;
512 // Recurse into dirs if at top of the tree or given -R
513 if (!indir->parent || (flags & FLAG_R))
514 listfiles(openat(dirfd, sort[ul]->name, 0), sort[ul]);
517 if (dirfd != AT_FDCWD) close(dirfd);
522 char **s, *noargs[] = {".", 0};
525 TT.screen_width = 80;
526 terminal_size(&TT.screen_width, NULL);
527 if (TT.screen_width<2) TT.screen_width = 2;
529 // Do we have an implied -1
531 toys.optflags |= FLAG_1;
532 if (TT.color) toys.optflags ^= FLAG_color;
533 } else if (toys.optflags&(FLAG_l|FLAG_o|FLAG_n|FLAG_g))
534 toys.optflags |= FLAG_1;
535 else if (!(toys.optflags&(FLAG_1|FLAG_x|FLAG_m))) toys.optflags |= FLAG_C;
536 // The optflags parsing infrastructure should really do this for us,
537 // but currently it has "switch off when this is set", so "-dR" and "-Rd"
538 // behave differently
539 if (toys.optflags & FLAG_d) toys.optflags &= ~FLAG_R;
541 // Iterate through command line arguments, collecting directories and files.
542 // Non-absolute paths are relative to current directory.
543 TT.files = dirtree_start(0, 0);
544 for (s = *toys.optargs ? toys.optargs : noargs; *s; s++) {
545 dt = dirtree_start(*s, !(toys.optflags&(FLAG_l|FLAG_d|FLAG_F)) ||
546 (toys.optflags&(FLAG_L|FLAG_H)));
553 // Typecast means double_list->prev temporarirly goes in dirtree->parent
554 dlist_add_nomalloc((void *)&TT.files->child, (struct double_list *)dt);
557 // Turn double_list into dirtree
558 dlist_to_dirtree(TT.files);
560 // Display the files we collected
561 listfiles(AT_FDCWD, TT.files);
563 if (CFG_TOYBOX_FREE) free(TT.files);