2 * Copyright (c) 1989, 1993, 1994
3 * The Regents of the University of California. All rights reserved.
5 * This code is derived from software contributed to Berkeley by
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38 static const char copyright[] =
39 "@(#) Copyright (c) 1989, 1993, 1994\n\
40 The Regents of the University of California. All rights reserved.\n";
45 static char sccsid[] = "@(#)ls.c 8.5 (Berkeley) 4/2/94";
48 #include <sys/cdefs.h>
49 __FBSDID("$FreeBSD: src/bin/ls/ls.c,v 1.32.2.8 2002/11/17 10:27:34 tjr Exp $");
51 #include <sys/types.h>
53 #include <sys/ioctl.h>
76 * Upward approximation of the maximum number of characters needed to
77 * represent a value of integral type t as a string, excluding the
78 * NUL terminator, with provision for a sign.
80 #define STRBUF_SIZEOF(t) (1 + CHAR_BIT * sizeof(t) / 3 + 1)
82 static void display(FTSENT *, FTSENT *);
83 static u_quad_t makenines(u_long);
84 static int mastercmp(const FTSENT **, const FTSENT **);
85 static void traverse(int, char **, int);
87 static void (*printfcn)(DISPLAY *);
88 static int (*sortfcn)(const FTSENT *, const FTSENT *);
90 long blocksize; /* block size units */
91 int termwidth = 80; /* default terminal width */
94 int f_accesstime; /* use time of last access */
95 int f_flags; /* show flags associated with a file */
96 int f_humanval; /* show human-readable file sizes */
97 int f_inode; /* print inode */
98 static int f_kblocks; /* print size in kilobytes */
99 static int f_listdir; /* list actual directory, not contents */
100 static int f_listdot; /* list files beginning with . */
101 int f_longform; /* long listing format */
102 int f_nonprint; /* show unprintables as ? */
103 static int f_nosort; /* don't sort output */
104 int f_notabs; /* don't use tab-separated multi-col output */
105 static int f_numericonly; /* don't convert uid/gid to name */
106 int f_octal; /* show unprintables as \xxx */
107 int f_octal_escape; /* like f_octal but use C escapes if possible */
108 static int f_recursive; /* ls subdirectories also */
109 static int f_reversesort; /* reverse whatever sort is used */
110 int f_sectime; /* print the real time for all files */
111 static int f_singlecol; /* use single column output */
112 int f_size; /* list size in short listing */
113 int f_slash; /* similar to f_type, but only for dirs */
114 int f_sortacross; /* sort across rows, not down columns */
115 int f_statustime; /* use time of last mode change */
116 int f_stream; /* stream the output, separate with commas */
117 static int f_timesort; /* sort by time vice name */
118 int f_type; /* add type character for non-regular files */
119 static int f_whiteout; /* show whiteout entries */
121 int f_color; /* add type in color for non-regular files */
123 char *ansi_bgcol; /* ANSI sequence to set background colour */
124 char *ansi_fgcol; /* ANSI sequence to set foreground colour */
125 char *ansi_coloff; /* ANSI sequence to reset colours */
126 char *attrs_off; /* ANSI sequence to turn off attributes */
127 char *enter_bold; /* ANSI sequence to set color to bold mode */
133 main(int argc, char *argv[])
135 static char dot[] = ".", *dotav[] = {dot, NULL};
137 int ch, fts_options, notused;
140 char termcapbuf[1024]; /* termcap definition buffer */
141 char tcapbuf[512]; /* capability buffer */
145 (void)setlocale(LC_ALL, "");
147 /* Terminal defaults to -Cq, non-terminal defaults to -1. */
148 if (isatty(STDOUT_FILENO)) {
150 if ((p = getenv("COLUMNS")) != NULL && *p != '\0')
152 else if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &win) != -1 &&
154 termwidth = win.ws_col;
158 /* retrieve environment variable, in case of explicit -C */
159 p = getenv("COLUMNS");
164 /* Root is -A automatically. */
168 fts_options = FTS_PHYSICAL;
169 while ((ch = getopt(argc, argv, "1ABCFGHLPRTWabcdfghiklmnopqrstuwx"))
173 * The -1, -C, -x and -l options all override each other so
174 * shell aliasing works right.
187 f_sortacross = f_longform = f_singlecol = 0;
199 /* The -c and -u options override each other. */
213 fts_options |= FTS_COMFOLLOW;
216 setenv("CLICOLOR", "", 1);
219 fts_options &= ~FTS_PHYSICAL;
220 fts_options |= FTS_LOGICAL;
223 fts_options &= ~FTS_COMFOLLOW;
224 fts_options &= ~FTS_LOGICAL;
225 fts_options |= FTS_PHYSICAL;
231 fts_options |= FTS_SEEDOT;
236 /* The -d option turns off the -R option. */
244 case 'g': /* Compatibility with 4.3BSD. */
308 /* Enabling of colours is conditional on the environment. */
309 if (getenv("CLICOLOR") &&
310 (isatty(STDOUT_FILENO) || getenv("CLICOLOR_FORCE")))
312 if (tgetent(termcapbuf, getenv("TERM")) == 1) {
313 ansi_fgcol = tgetstr("AF", &bp);
314 ansi_bgcol = tgetstr("AB", &bp);
315 attrs_off = tgetstr("me", &bp);
316 enter_bold = tgetstr("md", &bp);
318 /* To switch colours off use 'op' if
319 * available, otherwise use 'oc', or
320 * don't do colours at all. */
321 ansi_coloff = tgetstr("op", &bp);
323 ansi_coloff = tgetstr("oc", &bp);
324 if (ansi_fgcol && ansi_bgcol && ansi_coloff)
328 (void)fprintf(stderr, "Color support not compiled in.\n");
334 * We can't put tabs and color sequences together:
335 * column number will be incremented incorrectly
336 * for "stty oxtabs" mode.
339 (void)signal(SIGINT, colorquit);
340 (void)signal(SIGQUIT, colorquit);
341 parsecolors(getenv("LSCOLORS"));
346 * If not -F, -i, -l, -s or -t options, don't require stat
347 * information, unless in color mode in which case we do
348 * need this to determine which colors to display.
350 if (!f_inode && !f_longform && !f_size && !f_timesort && !f_type
355 fts_options |= FTS_NOSTAT;
358 * If not -F, -d or -l options, follow any symbolic links listed on
361 if (!f_longform && !f_listdir && !f_type)
362 fts_options |= FTS_COMFOLLOW;
365 * If -W, show whiteout entries
369 fts_options |= FTS_WHITEOUT;
372 /* If -l or -s, figure out block size. */
373 if (f_longform || f_size) {
377 (void)getbsize(¬used, &blocksize);
381 /* Select a sort function. */
384 sortfcn = revnamecmp;
385 else if (f_accesstime)
387 else if (f_statustime)
388 sortfcn = revstatcmp;
389 else /* Use modification time. */
394 else if (f_accesstime)
396 else if (f_statustime)
398 else /* Use modification time. */
402 /* Select a print function. */
404 printfcn = printscol;
406 printfcn = printlong;
408 printfcn = printstream;
413 traverse(argc, argv, fts_options);
415 traverse(1, dotav, fts_options);
419 static int output; /* If anything output. */
422 * Traverse() walks the logical directory structure specified by the argv list
423 * in the order specified by the mastercmp() comparison function. During the
424 * traversal it passes linked lists of structures to display() which represent
425 * a superset (may be exact set) of the files to be displayed.
428 traverse(int argc, char *argv[], int options)
435 fts_open(argv, options, f_nosort ? NULL : mastercmp)) == NULL)
438 display(NULL, fts_children(ftsp, 0));
443 * If not recursing down this tree and don't need stat info, just get
446 ch_options = !f_recursive && options & FTS_NOSTAT ? FTS_NAMEONLY : 0;
448 while ((p = fts_read(ftsp)) != NULL)
449 switch (p->fts_info) {
451 warnx("%s: directory causes a cycle", p->fts_name);
455 warnx("%s: %s", p->fts_name, strerror(p->fts_errno));
459 if (p->fts_level != FTS_ROOTLEVEL &&
460 p->fts_name[0] == '.' && !f_listdot)
464 * If already output something, put out a newline as
465 * a separator. If multiple arguments, precede each
466 * directory with its name.
470 printname(p->fts_path);
472 } else if (argc > 1) {
473 printname(p->fts_path);
477 chp = fts_children(ftsp, ch_options);
480 if (!f_recursive && chp != NULL)
481 (void)fts_set(ftsp, p, FTS_SKIP);
491 * Display() takes a linked list of FTSENT structures and passes the list
492 * along with any other necessary information to the print function. P
493 * points to the parent directory of the display list.
496 display(FTSENT *p, FTSENT *list)
503 u_long btotal, maxblock, maxinode, maxlen, maxnlink;
504 int bcfile, maxflags;
507 size_t flen, ulen, glen;
509 int entries, needstats;
510 const char *user, *group;
512 char buf[STRBUF_SIZEOF(u_quad_t) + 1];
513 char ngroup[STRBUF_SIZEOF(uid_t) + 1];
514 char nuser[STRBUF_SIZEOF(gid_t) + 1];
517 * If list is NULL there are two possibilities: that the parent
518 * directory p has no children, or that fts_children() returned an
519 * error. We ignore the error case since it will be replicated
520 * on the next call to fts_read() on the post-order visit to the
521 * directory p, and will be signaled in traverse().
526 needstats = f_inode || f_longform || f_size;
529 initmax = getenv("LS_COLWIDTHS");
530 /* Fields match -lios order. New ones should be added at the end. */
531 maxblock = maxinode = maxlen = maxnlink =
532 maxuser = maxgroup = maxflags = maxsize = 0;
533 if (initmax != NULL && *initmax != '\0') {
534 char *initmax2, *jinitmax;
537 /* Fill-in "::" as "0:0:0" for the sake of scanf. */
538 jinitmax = initmax2 = malloc(strlen(initmax) * 2 + 2);
539 if (jinitmax == NULL)
542 strcpy(initmax2, "0:"), initmax2 += 2;
544 *initmax2++ = *initmax, *initmax2 = '\0';
545 for (initmax++; *initmax != '\0'; initmax++) {
546 if (initmax[-1] == ':' && initmax[0] == ':') {
548 *initmax2++ = initmax[0];
551 *initmax2++ = initmax[0];
555 if (initmax2[-1] == ':')
556 strcpy(initmax2, "0");
558 ninitmax = sscanf(jinitmax,
559 " %lu : %lu : %lu : %i : %i : %i : %llu : %lu ",
560 &maxinode, &maxblock, &maxnlink, &maxuser,
561 &maxgroup, &maxflags, &maxsize, &maxlen);
596 maxinode = makenines(maxinode);
597 maxblock = makenines(maxblock);
598 maxnlink = makenines(maxnlink);
599 maxsize = makenines(maxsize);
603 for (cur = list, entries = 0; cur; cur = cur->fts_link) {
604 if (cur->fts_info == FTS_ERR || cur->fts_info == FTS_NS) {
606 cur->fts_name, strerror(cur->fts_errno));
607 cur->fts_number = NO_PRINT;
612 * P is NULL if list is the argv list, to which different rules
616 /* Directories will be displayed later. */
617 if (cur->fts_info == FTS_D && !f_listdir) {
618 cur->fts_number = NO_PRINT;
622 /* Only display dot file if -a/-A set. */
623 if (cur->fts_name[0] == '.' && !f_listdot) {
624 cur->fts_number = NO_PRINT;
628 if (cur->fts_namelen > maxlen)
629 maxlen = cur->fts_namelen;
630 if (f_octal || f_octal_escape) {
631 u_long t = len_octal(cur->fts_name, cur->fts_namelen);
638 if (sp->st_blocks > maxblock)
639 maxblock = sp->st_blocks;
640 if (sp->st_ino > maxinode)
641 maxinode = sp->st_ino;
642 if (sp->st_nlink > maxnlink)
643 maxnlink = sp->st_nlink;
644 if (sp->st_size > maxsize)
645 maxsize = sp->st_size;
647 btotal += sp->st_blocks;
650 (void)snprintf(nuser, sizeof(nuser),
652 (void)snprintf(ngroup, sizeof(ngroup),
657 user = user_from_uid(sp->st_uid, 0);
658 group = group_from_gid(sp->st_gid, 0);
660 if ((ulen = strlen(user)) > maxuser)
662 if ((glen = strlen(group)) > maxgroup)
665 flags = fflagstostr(sp->st_flags);
666 if (flags != NULL && *flags == '\0') {
672 flen = strlen(flags);
673 if (flen > (size_t)maxflags)
678 if ((np = malloc(sizeof(NAMES) +
679 ulen + glen + flen + 3)) == NULL)
682 np->user = &np->data[0];
683 (void)strcpy(np->user, user);
684 np->group = &np->data[ulen + 1];
685 (void)strcpy(np->group, group);
687 if (S_ISCHR(sp->st_mode) ||
688 S_ISBLK(sp->st_mode))
692 np->flags = &np->data[ulen + glen + 2];
693 (void)strcpy(np->flags, flags);
696 cur->fts_pointer = np;
711 (void)snprintf(buf, sizeof(buf), "%lu", maxblock);
712 d.s_block = strlen(buf);
713 d.s_flags = maxflags;
714 d.s_group = maxgroup;
715 (void)snprintf(buf, sizeof(buf), "%lu", maxinode);
716 d.s_inode = strlen(buf);
717 (void)snprintf(buf, sizeof(buf), "%lu", maxnlink);
718 d.s_nlink = strlen(buf);
719 (void)snprintf(buf, sizeof(buf), "%qu", maxsize);
720 d.s_size = strlen(buf);
727 for (cur = list; cur; cur = cur->fts_link)
728 free(cur->fts_pointer);
732 * Ordering for mastercmp:
733 * If ordering the argv (fts_level = FTS_ROOTLEVEL) return non-directories
734 * as larger than directories. Within either group, use the sort function.
735 * All other levels use the sort function. Error entries remain unsorted.
738 mastercmp(const FTSENT **a, const FTSENT **b)
742 a_info = (*a)->fts_info;
743 if (a_info == FTS_ERR)
745 b_info = (*b)->fts_info;
746 if (b_info == FTS_ERR)
749 if (a_info == FTS_NS || b_info == FTS_NS)
750 return (namecmp(*a, *b));
752 if (a_info != b_info &&
753 (*a)->fts_level == FTS_ROOTLEVEL && !f_listdir) {
759 return (sortfcn(*a, *b));
763 * Makenines() returns (10**n)-1. This is useful for converting a width
764 * into a number that wide in decimal.
773 /* Use a loop instead of pow(), since all values of n are small. */
774 for (i = 0; i < n; i++)