1 /*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1989, 1993, 1994
5 * The Regents of the University of California. All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * Michael Fischbein.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34
35 #ifndef lint
36 static const char copyright[] =
37 "@(#) Copyright (c) 1989, 1993, 1994\n\
38 The Regents of the University of California. All rights reserved.\n";
39 #endif /* not lint */
40
41 #if 0
42 #ifndef lint
43 static char sccsid[] = "@(#)ls.c 8.5 (Berkeley) 4/2/94";
44 #endif /* not lint */
45 #endif
46 #include <sys/cdefs.h>
47 #include <sys/param.h>
48 #include <sys/stat.h>
49 #include <sys/ioctl.h>
50 #include <sys/mac.h>
51
52 #include <ctype.h>
53 #include <dirent.h>
54 #include <err.h>
55 #include <errno.h>
56 #include <fts.h>
57 #include <getopt.h>
58 #include <grp.h>
59 #include <inttypes.h>
60 #include <limits.h>
61 #include <locale.h>
62 #include <pwd.h>
63 #include <stdbool.h>
64 #include <stdio.h>
65 #include <stdlib.h>
66 #include <string.h>
67 #include <unistd.h>
68 #ifdef COLORLS
69 #include <termcap.h>
70 #include <signal.h>
71 #endif
72
73 #include "ls.h"
74 #include "extern.h"
75
76 /*
77 * Upward approximation of the maximum number of characters needed to
78 * represent a value of integral type t as a string, excluding the
79 * NUL terminator, with provision for a sign.
80 */
81 #define STRBUF_SIZEOF(t) (1 + CHAR_BIT * sizeof(t) / 3 + 1)
82
83 /*
84 * MAKENINES(n) turns n into (10**n)-1. This is useful for converting a width
85 * into a number that wide in decimal.
86 * XXX: Overflows are not considered.
87 */
88 #define MAKENINES(n) \
89 do { \
90 intmax_t __i; \
91 \
92 /* Use a loop as all values of n are small. */ \
93 for (__i = 1; n > 0; __i *= 10) \
94 n--; \
95 n = __i - 1; \
96 } while(0)
97
98 static void display(const FTSENT *, FTSENT *, int);
99 static int mastercmp(const FTSENT * const *, const FTSENT * const *);
100 static void traverse(int, char **, int);
101
102 #define COLOR_OPT (CHAR_MAX + 1)
103
104 static const struct option long_opts[] =
105 {
106 {"color", optional_argument, NULL, COLOR_OPT},
107 {NULL, no_argument, NULL, 0}
108 };
109
110 static void (*printfcn)(const DISPLAY *);
111 static int (*sortfcn)(const FTSENT *, const FTSENT *);
112
113 long blocksize; /* block size units */
114 int termwidth = 80; /* default terminal width */
115
116 /* flags */
117 int f_accesstime; /* use time of last access */
118 int f_birthtime; /* use time of birth */
119 int f_flags; /* show flags associated with a file */
120 int f_humanval; /* show human-readable file sizes */
121 int f_inode; /* print inode */
122 static int f_kblocks; /* print size in kilobytes */
123 int f_label; /* show MAC label */
124 static int f_listdir; /* list actual directory, not contents */
125 static int f_listdot; /* list files beginning with . */
126 int f_longform; /* long listing format */
127 static int f_noautodot; /* do not automatically enable -A for root */
128 static int f_nofollow; /* don't follow symbolic link arguments */
129 int f_nonprint; /* show unprintables as ? */
130 static int f_nosort; /* don't sort output */
131 int f_notabs; /* don't use tab-separated multi-col output */
132 static int f_numericonly; /* don't convert uid/gid to name */
133 int f_octal; /* show unprintables as \xxx */
134 int f_octal_escape; /* like f_octal but use C escapes if possible */
135 static int f_recursive; /* ls subdirectories also */
136 static int f_reversesort; /* reverse whatever sort is used */
137 static int f_verssort; /* sort names using strverscmp(3) rather than strcoll(3) */
138 int f_samesort; /* sort time and name in same direction */
139 int f_sectime; /* print full time information */
140 static int f_singlecol; /* use single column output */
141 int f_size; /* list size in short listing */
142 static int f_sizesort;
143 int f_slash; /* similar to f_type, but only for dirs */
144 int f_sortacross; /* sort across rows, not down columns */
145 int f_sowner; /* disable showing owner's name */
146 int f_statustime; /* use time of last mode change */
147 static int f_stream; /* stream the output, separate with commas */
148 int f_thousands; /* show file sizes with thousands separators */
149 char *f_timeformat; /* user-specified time format */
150 static int f_timesort; /* sort by time vice name */
151 int f_type; /* add type character for non-regular files */
152 static int f_whiteout; /* show whiteout entries */
153 #ifdef COLORLS
154 int colorflag = COLORFLAG_NEVER; /* passed in colorflag */
155 int f_color; /* add type in color for non-regular files */
156 bool explicitansi; /* Explicit ANSI sequences, no termcap(5) */
157 char *ansi_bgcol; /* ANSI sequence to set background colour */
158 char *ansi_fgcol; /* ANSI sequence to set foreground colour */
159 char *ansi_coloff; /* ANSI sequence to reset colours */
160 char *attrs_off; /* ANSI sequence to turn off attributes */
161 char *enter_bold; /* ANSI sequence to set color to bold mode */
162 char *enter_underline; /* ANSI sequence to enter underline mode */
163 #endif
164
165 static int rval;
166
167 static bool
do_color_from_env(void)168 do_color_from_env(void)
169 {
170 const char *p;
171 bool doit;
172
173 doit = false;
174 p = getenv("CLICOLOR");
175 if (p == NULL) {
176 /*
177 * COLORTERM is the more standard name for this variable. We'll
178 * honor it as long as it's both set and not empty.
179 */
180 p = getenv("COLORTERM");
181 if (p != NULL && *p != '\0')
182 doit = true;
183 } else
184 doit = true;
185
186 return (doit &&
187 (isatty(STDOUT_FILENO) || getenv("CLICOLOR_FORCE")));
188 }
189
190 static bool
do_color(void)191 do_color(void)
192 {
193
194 #ifdef COLORLS
195 if (colorflag == COLORFLAG_NEVER)
196 return (false);
197 else if (colorflag == COLORFLAG_ALWAYS)
198 return (true);
199 #endif
200 return (do_color_from_env());
201 }
202
203 #ifdef COLORLS
204 static bool
do_color_always(const char * term)205 do_color_always(const char *term)
206 {
207
208 return (strcmp(term, "always") == 0 || strcmp(term, "yes") == 0 ||
209 strcmp(term, "force") == 0);
210 }
211
212 static bool
do_color_never(const char * term)213 do_color_never(const char *term)
214 {
215
216 return (strcmp(term, "never") == 0 || strcmp(term, "no") == 0 ||
217 strcmp(term, "none") == 0);
218 }
219
220 static bool
do_color_auto(const char * term)221 do_color_auto(const char *term)
222 {
223
224 return (strcmp(term, "auto") == 0 || strcmp(term, "tty") == 0 ||
225 strcmp(term, "if-tty") == 0);
226 }
227 #endif /* COLORLS */
228
229 int
main(int argc,char * argv[])230 main(int argc, char *argv[])
231 {
232 static char dot[] = ".", *dotav[] = {dot, NULL};
233 struct winsize win;
234 int ch, fts_options, notused;
235 char *p;
236 const char *errstr = NULL;
237 #ifdef COLORLS
238 char termcapbuf[1024]; /* termcap definition buffer */
239 char tcapbuf[512]; /* capability buffer */
240 char *bp = tcapbuf, *term;
241 #endif
242
243 (void)setlocale(LC_ALL, "");
244
245 /* Terminal defaults to -Cq, non-terminal defaults to -1. */
246 if (isatty(STDOUT_FILENO)) {
247 termwidth = 80;
248 if ((p = getenv("COLUMNS")) != NULL && *p != '\0')
249 termwidth = strtonum(p, 0, INT_MAX, &errstr);
250 else if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &win) != -1 &&
251 win.ws_col > 0)
252 termwidth = win.ws_col;
253 f_nonprint = 1;
254 } else {
255 f_singlecol = 1;
256 /* retrieve environment variable, in case of explicit -C */
257 p = getenv("COLUMNS");
258 if (p)
259 termwidth = strtonum(p, 0, INT_MAX, &errstr);
260 }
261
262 if (errstr)
263 termwidth = 80;
264
265 fts_options = FTS_PHYSICAL;
266 if (getenv("LS_SAMESORT"))
267 f_samesort = 1;
268
269 /*
270 * For historical compatibility, we'll use our autodetection if CLICOLOR
271 * is set.
272 */
273 #ifdef COLORLS
274 if (getenv("CLICOLOR"))
275 colorflag = COLORFLAG_AUTO;
276 #endif
277 while ((ch = getopt_long(argc, argv,
278 "+1ABCD:FGHILPRSTUWXZabcdfghiklmnopqrstuvwxy,", long_opts,
279 NULL)) != -1) {
280 switch (ch) {
281 /*
282 * The -1, -C, -x and -l options all override each other so
283 * shell aliasing works right.
284 */
285 case '1':
286 f_singlecol = 1;
287 f_longform = 0;
288 f_stream = 0;
289 break;
290 case 'C':
291 f_sortacross = f_longform = f_singlecol = 0;
292 break;
293 case 'l':
294 f_longform = 1;
295 f_singlecol = 0;
296 f_stream = 0;
297 break;
298 case 'x':
299 f_sortacross = 1;
300 f_longform = 0;
301 f_singlecol = 0;
302 break;
303 /* The -c, -u, and -U options override each other. */
304 case 'c':
305 f_statustime = 1;
306 f_accesstime = 0;
307 f_birthtime = 0;
308 break;
309 case 'u':
310 f_accesstime = 1;
311 f_statustime = 0;
312 f_birthtime = 0;
313 break;
314 case 'U':
315 f_birthtime = 1;
316 f_accesstime = 0;
317 f_statustime = 0;
318 break;
319 case 'f':
320 f_nosort = 1;
321 /* FALLTHROUGH */
322 case 'a':
323 fts_options |= FTS_SEEDOT;
324 /* FALLTHROUGH */
325 case 'A':
326 f_listdot = 1;
327 break;
328 /* The -S, -t and -v options override each other. */
329 case 'S':
330 f_sizesort = 1;
331 f_timesort = 0;
332 f_verssort = 0;
333 break;
334 case 't':
335 f_timesort = 1;
336 f_sizesort = 0;
337 f_verssort = 0;
338 break;
339 case 'v':
340 f_verssort = 1;
341 f_sizesort = 0;
342 f_timesort = 0;
343 break;
344 /* Other flags. Please keep alphabetic. */
345 case ',':
346 f_thousands = 1;
347 break;
348 case 'B':
349 f_nonprint = 0;
350 f_octal = 1;
351 f_octal_escape = 0;
352 break;
353 case 'D':
354 f_timeformat = optarg;
355 break;
356 case 'F':
357 f_type = 1;
358 f_slash = 0;
359 break;
360 case 'G':
361 /*
362 * We both set CLICOLOR here and set colorflag to
363 * COLORFLAG_AUTO, because -G should not force color if
364 * stdout isn't a tty.
365 */
366 setenv("CLICOLOR", "", 1);
367 #ifdef COLORLS
368 colorflag = COLORFLAG_AUTO;
369 #endif
370 break;
371 case 'H':
372 fts_options |= FTS_COMFOLLOW;
373 f_nofollow = 0;
374 break;
375 case 'I':
376 f_noautodot = 1;
377 break;
378 case 'L':
379 fts_options &= ~FTS_PHYSICAL;
380 fts_options |= FTS_LOGICAL;
381 f_nofollow = 0;
382 break;
383 case 'P':
384 fts_options &= ~FTS_COMFOLLOW;
385 fts_options &= ~FTS_LOGICAL;
386 fts_options |= FTS_PHYSICAL;
387 f_nofollow = 1;
388 break;
389 case 'R':
390 f_recursive = 1;
391 break;
392 case 'T':
393 f_sectime = 1;
394 break;
395 case 'W':
396 f_whiteout = 1;
397 break;
398 case 'Z':
399 f_label = 1;
400 break;
401 case 'b':
402 f_nonprint = 0;
403 f_octal = 0;
404 f_octal_escape = 1;
405 break;
406 /* The -d option turns off the -R option. */
407 case 'd':
408 f_listdir = 1;
409 f_recursive = 0;
410 break;
411 case 'g':
412 f_longform = 1;
413 f_singlecol = 0;
414 f_stream = 0;
415 f_sowner = 1;
416 break;
417 case 'h':
418 f_humanval = 1;
419 break;
420 case 'i':
421 f_inode = 1;
422 break;
423 case 'k':
424 f_humanval = 0;
425 f_kblocks = 1;
426 break;
427 case 'm':
428 f_stream = 1;
429 f_singlecol = 0;
430 f_longform = 0;
431 break;
432 case 'n':
433 f_numericonly = 1;
434 f_longform = 1;
435 f_singlecol = 0;
436 f_stream = 0;
437 break;
438 case 'o':
439 f_flags = 1;
440 break;
441 case 'p':
442 f_slash = 1;
443 f_type = 1;
444 break;
445 case 'q':
446 f_nonprint = 1;
447 f_octal = 0;
448 f_octal_escape = 0;
449 break;
450 case 'r':
451 f_reversesort = 1;
452 break;
453 case 's':
454 f_size = 1;
455 break;
456 case 'w':
457 f_nonprint = 0;
458 f_octal = 0;
459 f_octal_escape = 0;
460 break;
461 case 'y':
462 f_samesort = 1;
463 break;
464 case COLOR_OPT:
465 #ifdef COLORLS
466 if (optarg == NULL || do_color_always(optarg))
467 colorflag = COLORFLAG_ALWAYS;
468 else if (do_color_auto(optarg))
469 colorflag = COLORFLAG_AUTO;
470 else if (do_color_never(optarg))
471 colorflag = COLORFLAG_NEVER;
472 else
473 errx(2, "unsupported --color value '%s' (must be always, auto, or never)",
474 optarg);
475 break;
476 #else
477 warnx("color support not compiled in");
478 #endif
479 default:
480 case '?':
481 usage();
482 }
483 }
484 argc -= optind;
485 argv += optind;
486
487 /* Root is -A automatically unless -I. */
488 if (!f_listdot && getuid() == (uid_t)0 && !f_noautodot)
489 f_listdot = 1;
490
491 /*
492 * Enabling of colours is conditional on the environment in conjunction
493 * with the --color and -G arguments, if supplied.
494 */
495 if (do_color()) {
496 #ifdef COLORLS
497 if ((term = getenv("TERM")) != NULL &&
498 tgetent(termcapbuf, term) == 1) {
499 ansi_fgcol = tgetstr("AF", &bp);
500 ansi_bgcol = tgetstr("AB", &bp);
501 attrs_off = tgetstr("me", &bp);
502 enter_bold = tgetstr("md", &bp);
503 enter_underline = tgetstr("us", &bp);
504
505 /* To switch colours off use 'op' if
506 * available, otherwise use 'oc', or
507 * don't do colours at all. */
508 ansi_coloff = tgetstr("op", &bp);
509 if (!ansi_coloff)
510 ansi_coloff = tgetstr("oc", &bp);
511 if (ansi_fgcol && ansi_bgcol && ansi_coloff)
512 f_color = 1;
513 } else if (colorflag == COLORFLAG_ALWAYS) {
514 /*
515 * If we're *always* doing color but we don't have
516 * a functional TERM supplied, we'll fallback to
517 * outputting raw ANSI sequences.
518 */
519 f_color = 1;
520 explicitansi = true;
521 }
522 #endif /*COLORLS*/
523 }
524
525 #ifdef COLORLS
526 if (f_color) {
527 /*
528 * We can't put tabs and color sequences together:
529 * column number will be incremented incorrectly
530 * for "stty oxtabs" mode.
531 */
532 f_notabs = 1;
533 (void)signal(SIGINT, colorquit);
534 (void)signal(SIGQUIT, colorquit);
535 parsecolors(getenv("LSCOLORS"));
536 }
537 #endif
538
539 /*
540 * If not -F, -i, -l, -s, -S or -t options, don't require stat
541 * information, unless in color mode in which case we do
542 * need this to determine which colors to display.
543 */
544 if (!f_inode && !f_longform && !f_size && !f_timesort &&
545 !f_sizesort && !f_type
546 #ifdef COLORLS
547 && !f_color
548 #endif
549 )
550 fts_options |= FTS_NOSTAT;
551
552 /*
553 * If not -F, -P, -d or -l options, follow any symbolic links listed on
554 * the command line, unless in color mode in which case we need to
555 * distinguish file type for a symbolic link itself and its target.
556 */
557 if (!f_nofollow && !f_longform && !f_listdir && (!f_type || f_slash)
558 #ifdef COLORLS
559 && !f_color
560 #endif
561 )
562 fts_options |= FTS_COMFOLLOW;
563
564 /*
565 * If -W, show whiteout entries
566 */
567 #ifdef FTS_WHITEOUT
568 if (f_whiteout)
569 fts_options |= FTS_WHITEOUT;
570 #endif
571
572 /* If -i, -l or -s, figure out block size. */
573 if (f_inode || f_longform || f_size) {
574 if (f_kblocks)
575 blocksize = 2;
576 else {
577 (void)getbsize(¬used, &blocksize);
578 blocksize /= 512;
579 }
580 }
581
582 /* Select a sort function. */
583 if (f_reversesort) {
584 if (f_sizesort)
585 sortfcn = revsizecmp;
586 else if (f_verssort)
587 sortfcn = revverscmp;
588 else if (!f_timesort)
589 sortfcn = revnamecmp;
590 else if (f_accesstime)
591 sortfcn = revacccmp;
592 else if (f_birthtime)
593 sortfcn = revbirthcmp;
594 else if (f_statustime)
595 sortfcn = revstatcmp;
596 else /* Use modification time. */
597 sortfcn = revmodcmp;
598 } else {
599 if (f_sizesort)
600 sortfcn = sizecmp;
601 else if (f_verssort)
602 sortfcn = verscmp;
603 else if (!f_timesort)
604 sortfcn = namecmp;
605 else if (f_accesstime)
606 sortfcn = acccmp;
607 else if (f_birthtime)
608 sortfcn = birthcmp;
609 else if (f_statustime)
610 sortfcn = statcmp;
611 else /* Use modification time. */
612 sortfcn = modcmp;
613 }
614
615 /* Select a print function. */
616 if (f_singlecol)
617 printfcn = printscol;
618 else if (f_longform)
619 printfcn = printlong;
620 else if (f_stream)
621 printfcn = printstream;
622 else
623 printfcn = printcol;
624
625 if (argc)
626 traverse(argc, argv, fts_options);
627 else
628 traverse(1, dotav, fts_options);
629 exit(rval);
630 }
631
632 static int output; /* If anything output. */
633
634 /*
635 * Traverse() walks the logical directory structure specified by the argv list
636 * in the order specified by the mastercmp() comparison function. During the
637 * traversal it passes linked lists of structures to display() which represent
638 * a superset (may be exact set) of the files to be displayed.
639 */
640 static void
traverse(int argc,char * argv[],int options)641 traverse(int argc, char *argv[], int options)
642 {
643 FTS *ftsp;
644 FTSENT *p, *chp;
645 int ch_options;
646
647 if ((ftsp =
648 fts_open(argv, options, f_nosort ? NULL : mastercmp)) == NULL)
649 err(1, "fts_open");
650
651 /*
652 * We ignore errors from fts_children here since they will be
653 * replicated and signalled on the next call to fts_read() below.
654 */
655 chp = fts_children(ftsp, 0);
656 if (chp != NULL)
657 display(NULL, chp, options);
658 if (f_listdir)
659 return;
660
661 /*
662 * If not recursing down this tree and don't need stat info, just get
663 * the names.
664 */
665 ch_options = !f_recursive && !f_label &&
666 options & FTS_NOSTAT ? FTS_NAMEONLY : 0;
667
668 while (errno = 0, (p = fts_read(ftsp)) != NULL)
669 switch (p->fts_info) {
670 case FTS_DC:
671 warnx("%s: directory causes a cycle", p->fts_name);
672 break;
673 case FTS_DNR:
674 case FTS_ERR:
675 warnx("%s: %s", p->fts_path, strerror(p->fts_errno));
676 rval = 1;
677 break;
678 case FTS_D:
679 if (p->fts_level != FTS_ROOTLEVEL &&
680 p->fts_name[0] == '.' && !f_listdot)
681 break;
682
683 /*
684 * If already output something, put out a newline as
685 * a separator. If multiple arguments, precede each
686 * directory with its name.
687 */
688 if (output) {
689 putchar('\n');
690 (void)printname(p->fts_path);
691 puts(":");
692 } else if (argc > 1) {
693 (void)printname(p->fts_path);
694 puts(":");
695 output = 1;
696 }
697 chp = fts_children(ftsp, ch_options);
698 display(p, chp, options);
699
700 if (!f_recursive && chp != NULL)
701 (void)fts_set(ftsp, p, FTS_SKIP);
702 break;
703 default:
704 break;
705 }
706 if (errno)
707 err(1, "fts_read");
708 }
709
710 /*
711 * Display() takes a linked list of FTSENT structures and passes the list
712 * along with any other necessary information to the print function. P
713 * points to the parent directory of the display list.
714 */
715 static void
display(const FTSENT * p,FTSENT * list,int options)716 display(const FTSENT *p, FTSENT *list, int options)
717 {
718 struct stat *sp;
719 DISPLAY d;
720 FTSENT *cur;
721 NAMES *np;
722 off_t maxsize;
723 long maxblock;
724 uintmax_t maxinode;
725 u_long btotal, labelstrlen, maxlen, maxnlink;
726 u_long maxlabelstr;
727 u_int sizelen;
728 int maxflags;
729 gid_t maxgroup;
730 uid_t maxuser;
731 size_t flen, ulen, glen;
732 char *initmax;
733 int entries, needstats;
734 const char *user, *group;
735 char *flags, *labelstr = NULL;
736 char ngroup[STRBUF_SIZEOF(uid_t) + 1];
737 char nuser[STRBUF_SIZEOF(gid_t) + 1];
738 u_long width[9];
739 int i;
740
741 needstats = f_inode || f_longform || f_size;
742 flen = 0;
743 btotal = 0;
744
745 #define LS_COLWIDTHS_FIELDS 9
746 initmax = getenv("LS_COLWIDTHS");
747
748 for (i = 0 ; i < LS_COLWIDTHS_FIELDS; i++)
749 width[i] = 0;
750
751 if (initmax != NULL) {
752 char *endp;
753
754 for (i = 0; i < LS_COLWIDTHS_FIELDS && *initmax != '\0'; i++) {
755 if (*initmax == ':') {
756 width[i] = 0;
757 } else {
758 width[i] = strtoul(initmax, &endp, 10);
759 initmax = endp;
760 while (isspace(*initmax))
761 initmax++;
762 if (*initmax != ':')
763 break;
764 initmax++;
765 }
766 }
767 if (i < LS_COLWIDTHS_FIELDS)
768 #ifdef COLORLS
769 if (!f_color)
770 #endif
771 f_notabs = 0;
772 }
773
774 /* Fields match -lios order. New ones should be added at the end. */
775 maxinode = width[0];
776 maxblock = width[1];
777 maxnlink = width[2];
778 maxuser = width[3];
779 maxgroup = width[4];
780 maxflags = width[5];
781 maxsize = width[6];
782 maxlen = width[7];
783 maxlabelstr = width[8];
784
785 MAKENINES(maxinode);
786 MAKENINES(maxblock);
787 MAKENINES(maxnlink);
788 MAKENINES(maxsize);
789
790 d.s_size = 0;
791 sizelen = 0;
792 flags = NULL;
793 for (cur = list, entries = 0; cur; cur = cur->fts_link) {
794 if (cur->fts_info == FTS_ERR || cur->fts_info == FTS_NS) {
795 warnx("%s: %s",
796 cur->fts_name, strerror(cur->fts_errno));
797 cur->fts_number = NO_PRINT;
798 rval = 1;
799 continue;
800 }
801 /*
802 * P is NULL if list is the argv list, to which different rules
803 * apply.
804 */
805 if (p == NULL) {
806 /* Directories will be displayed later. */
807 if (cur->fts_info == FTS_D && !f_listdir) {
808 cur->fts_number = NO_PRINT;
809 continue;
810 }
811 } else {
812 /* Only display dot file if -a/-A set. */
813 if (cur->fts_name[0] == '.' && !f_listdot) {
814 cur->fts_number = NO_PRINT;
815 continue;
816 }
817 }
818 if (cur->fts_namelen > maxlen)
819 maxlen = cur->fts_namelen;
820 if (f_octal || f_octal_escape) {
821 u_long t = len_octal(cur->fts_name, cur->fts_namelen);
822
823 if (t > maxlen)
824 maxlen = t;
825 }
826 if (needstats) {
827 sp = cur->fts_statp;
828 if (sp->st_blocks > maxblock)
829 maxblock = sp->st_blocks;
830 if (sp->st_ino > maxinode)
831 maxinode = sp->st_ino;
832 if (sp->st_nlink > maxnlink)
833 maxnlink = sp->st_nlink;
834 if (sp->st_size > maxsize)
835 maxsize = sp->st_size;
836
837 btotal += sp->st_blocks;
838 if (f_longform) {
839 if (f_numericonly) {
840 (void)snprintf(nuser, sizeof(nuser),
841 "%u", sp->st_uid);
842 (void)snprintf(ngroup, sizeof(ngroup),
843 "%u", sp->st_gid);
844 user = nuser;
845 group = ngroup;
846 } else {
847 user = user_from_uid(sp->st_uid, 0);
848 /*
849 * user_from_uid(..., 0) only returns
850 * NULL in OOM conditions. We could
851 * format the uid here, but (1) in
852 * general ls(1) exits on OOM, and (2)
853 * there is another allocation/exit
854 * path directly below, which will
855 * likely exit anyway.
856 */
857 if (user == NULL)
858 err(1, "user_from_uid");
859 group = group_from_gid(sp->st_gid, 0);
860 /* Ditto. */
861 if (group == NULL)
862 err(1, "group_from_gid");
863 }
864 if ((ulen = strlen(user)) > maxuser)
865 maxuser = ulen;
866 if ((glen = strlen(group)) > maxgroup)
867 maxgroup = glen;
868 if (f_flags) {
869 flags = fflagstostr(sp->st_flags);
870 if (flags != NULL && *flags == '\0') {
871 free(flags);
872 flags = strdup("-");
873 }
874 if (flags == NULL)
875 err(1, "fflagstostr");
876 flen = strlen(flags);
877 if (flen > (size_t)maxflags)
878 maxflags = flen;
879 } else
880 flen = 0;
881 labelstr = NULL;
882 if (f_label) {
883 char name[PATH_MAX + 1];
884 mac_t label;
885 int error;
886
887 error = mac_prepare_file_label(&label);
888 if (error == -1) {
889 warn("MAC label for %s/%s",
890 cur->fts_parent->fts_path,
891 cur->fts_name);
892 goto label_out;
893 }
894
895 if (cur->fts_level == FTS_ROOTLEVEL)
896 snprintf(name, sizeof(name),
897 "%s", cur->fts_name);
898 else
899 snprintf(name, sizeof(name),
900 "%s/%s", cur->fts_parent->
901 fts_accpath, cur->fts_name);
902
903 if (options & FTS_LOGICAL)
904 error = mac_get_file(name,
905 label);
906 else
907 error = mac_get_link(name,
908 label);
909 if (error == -1) {
910 warn("MAC label for %s/%s",
911 cur->fts_parent->fts_path,
912 cur->fts_name);
913 mac_free(label);
914 goto label_out;
915 }
916
917 error = mac_to_text(label,
918 &labelstr);
919 if (error == -1) {
920 warn("MAC label for %s/%s",
921 cur->fts_parent->fts_path,
922 cur->fts_name);
923 mac_free(label);
924 goto label_out;
925 }
926 mac_free(label);
927 label_out:
928 if (labelstr == NULL)
929 labelstr = strdup("-");
930 labelstrlen = strlen(labelstr);
931 if (labelstrlen > maxlabelstr)
932 maxlabelstr = labelstrlen;
933 } else
934 labelstrlen = 0;
935
936 if ((np = malloc(sizeof(NAMES) + labelstrlen +
937 ulen + glen + flen + 4)) == NULL)
938 err(1, "malloc");
939
940 np->user = &np->data[0];
941 (void)strcpy(np->user, user);
942 np->group = &np->data[ulen + 1];
943 (void)strcpy(np->group, group);
944
945 if (S_ISCHR(sp->st_mode) ||
946 S_ISBLK(sp->st_mode)) {
947 sizelen = snprintf(NULL, 0,
948 "%#jx", (uintmax_t)sp->st_rdev);
949 if (d.s_size < sizelen)
950 d.s_size = sizelen;
951 }
952
953 if (f_flags) {
954 np->flags = &np->data[ulen + glen + 2];
955 (void)strcpy(np->flags, flags);
956 free(flags);
957 }
958 if (f_label) {
959 np->label = &np->data[ulen + glen + 2
960 + (f_flags ? flen + 1 : 0)];
961 (void)strcpy(np->label, labelstr);
962 free(labelstr);
963 }
964 cur->fts_pointer = np;
965 }
966 }
967 ++entries;
968 }
969
970 /*
971 * If there are no entries to display, we normally stop right
972 * here. However, we must continue if we have to display the
973 * total block count. In this case, we display the total only
974 * on the second (p != NULL) pass.
975 */
976 if (!entries && (!(f_longform || f_size) || p == NULL))
977 return;
978
979 d.list = list;
980 d.entries = entries;
981 d.maxlen = maxlen;
982 if (needstats) {
983 d.btotal = btotal;
984 d.s_block = snprintf(NULL, 0, f_thousands ? "%'ld" : "%ld",
985 howmany(maxblock, blocksize));
986 d.s_flags = maxflags;
987 d.s_label = maxlabelstr;
988 d.s_group = maxgroup;
989 d.s_inode = snprintf(NULL, 0, "%ju", maxinode);
990 d.s_nlink = snprintf(NULL, 0, "%lu", maxnlink);
991 sizelen = f_humanval ? HUMANVALSTR_LEN :
992 snprintf(NULL, 0, "%ju", maxsize);
993 if (d.s_size < sizelen)
994 d.s_size = sizelen;
995 d.s_user = maxuser;
996 }
997 if (f_thousands) /* make space for commas */
998 d.s_size += (d.s_size - 1) / 3;
999 printfcn(&d);
1000 output = 1;
1001
1002 if (f_longform)
1003 for (cur = list; cur; cur = cur->fts_link)
1004 free(cur->fts_pointer);
1005 }
1006
1007 /*
1008 * Ordering for mastercmp:
1009 * If ordering the argv (fts_level = FTS_ROOTLEVEL) return non-directories
1010 * as larger than directories. Within either group, use the sort function.
1011 * All other levels use the sort function. Error entries remain unsorted.
1012 */
1013 static int
mastercmp(const FTSENT * const * a,const FTSENT * const * b)1014 mastercmp(const FTSENT * const *a, const FTSENT * const *b)
1015 {
1016 int a_info, b_info;
1017
1018 a_info = (*a)->fts_info;
1019 if (a_info == FTS_ERR)
1020 return (0);
1021 b_info = (*b)->fts_info;
1022 if (b_info == FTS_ERR)
1023 return (0);
1024
1025 if (a_info == FTS_NS || b_info == FTS_NS)
1026 return (namecmp(*a, *b));
1027
1028 if (a_info != b_info &&
1029 (*a)->fts_level == FTS_ROOTLEVEL && !f_listdir) {
1030 if (a_info == FTS_D)
1031 return (1);
1032 if (b_info == FTS_D)
1033 return (-1);
1034 }
1035 return (sortfcn(*a, *b));
1036 }
1037