ls/ls.c

   1 /*
   2  * Copyright (c) 1989, 1993, 1994
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * This code is derived from software contributed to Berkeley by
   6  * Michael Fischbein.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  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.
  23  *
  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
  34  * SUCH DAMAGE.
  35  */
  36
  37 #ifndef lint
  38 static const char copyright[] =
  39 "@(#) Copyright (c) 1989, 1993, 1994\n\
  40         The Regents of the University of California.  All rights reserved.\n";
  41 #endif /* not lint */
  42
  43 #if 0
  44 #ifndef lint
  45 static char sccsid[] = "@(#)ls.c        8.5 (Berkeley) 4/2/94";
  46 #endif /* not lint */
  47 #endif
  48 #include <sys/cdefs.h>
  49 __RCSID("$FreeBSD: src/bin/ls/ls.c,v 1.66 2002/09/21 01:28:36 wollman Exp $");
  50
  51 #include <sys/types.h>
  52 #include <sys/stat.h>
  53 #include <sys/ioctl.h>
  54
  55 #include <dirent.h>
  56 #include <err.h>
  57 #include <errno.h>
  58 #include <fts.h>
  59 #include <grp.h>
  60 #include <limits.h>
  61 #include <locale.h>
  62 #include <pwd.h>
  63 #include <stdio.h>
  64 #include <stdlib.h>
  65 #include <string.h>
  66 #include <unistd.h>
  67 #ifdef COLORLS
  68 #include <termcap.h>
  69 #include <signal.h>
  70 #endif
  71 #ifdef __APPLE__
  72 #include <get_compat.h>
  73 #else
  74 #define COMPAT_MODE(a,b) (1)
  75 #endif /* __APPLE__ */
  76 #include "ls.h"
  77 #include "extern.h"
  78
  79 /*
  80  * Upward approximation of the maximum number of characters needed to
  81  * represent a value of integral type t as a string, excluding the
  82  * NUL terminator, with provision for a sign.
  83  */
  84 #define STRBUF_SIZEOF(t)        (1 + CHAR_BIT * sizeof(t) / 3 + 1)
  85
  86 static void      display(FTSENT *, FTSENT *);
  87 static u_quad_t  makenines(u_quad_t);
  88 static int       mastercmp(const FTSENT **, const FTSENT **);
  89 static void      traverse(int, char **, int);
  90
  91 static void (*printfcn)(DISPLAY *);
  92 static int (*sortfcn)(const FTSENT *, const FTSENT *);
  93
  94 long blocksize;                 /* block size units */
  95 int termwidth = 80;             /* default terminal width */
  96
  97 /* flags */
  98        int f_accesstime;        /* use time of last access */
  99        int f_flags;             /* show flags associated with a file */
 100        int f_humanval;          /* show human-readable file sizes */
 101        int f_inode;             /* print inode */
 102 static int f_kblocks;           /* print size in kilobytes */
 103 static int f_listdir;           /* list actual directory, not contents */
 104 static int f_listdot;           /* list files beginning with . */
 105        int f_longform;          /* long listing format */
 106        int f_nonprint;          /* show unprintables as ? */
 107 static int f_nosort;            /* don't sort output */
 108        int f_notabs;            /* don't use tab-separated multi-col output */
 109        int f_numericonly;       /* don't convert uid/gid to name */
 110        int f_octal;             /* show unprintables as \xxx */
 111        int f_octal_escape;      /* like f_octal but use C escapes if possible */
 112 static int f_recursive;         /* ls subdirectories also */
 113 static int f_reversesort;       /* reverse whatever sort is used */
 114        int f_sectime;           /* print the real time for all files */
 115 static int f_singlecol;         /* use single column output */
 116        int f_size;              /* list size in short listing */
 117        int f_slash;             /* similar to f_type, but only for dirs */
 118        int f_sortacross;        /* sort across rows, not down columns */
 119        int f_statustime;        /* use time of last mode change */
 120        int f_stream;            /* stream the output, separate with commas */
 121 static int f_timesort;          /* sort by time vice name */
 122 static int f_sizesort;          /* sort by size */
 123        int f_type;              /* add type character for non-regular files */
 124 static int f_whiteout;          /* show whiteout entries */
 125        int f_acl;               /* show ACLs in long listing */
 126        int f_xattr;             /* show extended attributes in long listing */
 127        int f_group;             /* show group */
 128        int f_owner;             /* show owner */
 129 #ifdef COLORLS
 130        int f_color;             /* add type in color for non-regular files */
 131
 132 char *ansi_bgcol;               /* ANSI sequence to set background colour */
 133 char *ansi_fgcol;               /* ANSI sequence to set foreground colour */
 134 char *ansi_coloff;              /* ANSI sequence to reset colours */
 135 char *attrs_off;                /* ANSI sequence to turn off attributes */
 136 char *enter_bold;               /* ANSI sequence to set color to bold mode */
 137 #endif
 138
 139 static int rval;
 140
 141 int
 142 main(int argc, char *argv[])
 143 {
 144         static char dot[] = ".", *dotav[] = {dot, NULL};
 145         struct winsize win;
 146         int ch, fts_options, notused;
 147         char *p;
 148 #ifdef COLORLS
 149         char termcapbuf[1024];  /* termcap definition buffer */
 150         char tcapbuf[512];      /* capability buffer */
 151         char *bp = tcapbuf;
 152 #endif
 153
 154         if (argc < 1)
 155                 usage();
 156         (void)setlocale(LC_ALL, "");
 157
 158         /* Terminal defaults to -Cq, non-terminal defaults to -1. */
 159         if (isatty(STDOUT_FILENO)) {
 160                 termwidth = 80;
 161                 if ((p = getenv("COLUMNS")) != NULL && *p != '\0')
 162                         termwidth = atoi(p);
 163                 else if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &win) != -1 &&
 164                     win.ws_col > 0)
 165                         termwidth = win.ws_col;
 166                 f_nonprint = 1;
 167         } else {
 168                 f_singlecol = 1;
 169                 /* retrieve environment variable, in case of explicit -C */
 170                 p = getenv("COLUMNS");
 171                 if (p)
 172                         termwidth = atoi(p);
 173         }
 174
 175         /* Root is -A automatically. */
 176         if (!getuid())
 177                 f_listdot = 1;
 178
 179         fts_options = FTS_PHYSICAL;
 180         while ((ch = getopt(argc, argv, "1@ABCFGHLOPRSTWabcdefghiklmnopqrstuvwx"))
 181             != -1) {
 182                 switch (ch) {
 183                 /*
 184                  * The -1, -C, -x and -l options all override each other so
 185                  * shell aliasing works right.
 186                  */
 187                 case '1':
 188                         f_singlecol = 1;
 189                         f_longform = 0;
 190                         f_stream = 0;
 191                         break;
 192                 case 'B':
 193                         f_nonprint = 0;
 194                         f_octal = 1;
 195                         f_octal_escape = 0;
 196                         break;
 197                 case 'C':
 198                         f_sortacross = f_longform = f_singlecol = 0;
 199                         break;
 200                 case 'l':
 201                         f_longform = 1;
 202                         f_singlecol = 0;
 203                         f_stream = 0;
 204                         break;
 205                 case 'x':
 206                         f_sortacross = 1;
 207                         f_longform = 0;
 208                         f_singlecol = 0;
 209                         break;
 210                 /* The -c and -u options override each other. */
 211                 case 'c':
 212                         f_statustime = 1;
 213                         f_accesstime = 0;
 214                         break;
 215                 case 'u':
 216                         f_accesstime = 1;
 217                         f_statustime = 0;
 218                         break;
 219                 case 'F':
 220                         f_type = 1;
 221                         f_slash = 0;
 222                         break;
 223                 case 'H':
 224                         if (COMPAT_MODE("bin/ls", "Unix2003")) {
 225                                 fts_options &= ~FTS_LOGICAL;
 226                                 fts_options |= FTS_PHYSICAL;
 227                                 fts_options |= FTS_COMFOLLOWDIR;
 228                         } else
 229                                 fts_options |= FTS_COMFOLLOW;
 230                         break;
 231                 case 'G':
 232                         setenv("CLICOLOR", "", 1);
 233                         break;
 234                 case 'L':
 235                         fts_options &= ~FTS_PHYSICAL;
 236                         fts_options |= FTS_LOGICAL;
 237                         if (COMPAT_MODE("bin/ls", "Unix2003")) {
 238                                 fts_options &= ~(FTS_COMFOLLOW|FTS_COMFOLLOWDIR);
 239                         }
 240                         break;
 241                 case 'P':
 242                         fts_options &= ~(FTS_COMFOLLOW|FTS_COMFOLLOWDIR);
 243                         fts_options &= ~FTS_LOGICAL;
 244                         fts_options |= FTS_PHYSICAL;
 245                         break;
 246                 case 'R':
 247                         f_recursive = 1;
 248                         break;
 249                 case 'a':
 250                         fts_options |= FTS_SEEDOT;
 251                         /* FALLTHROUGH */
 252                 case 'A':
 253                         f_listdot = 1;
 254                         break;
 255                 /* The -d option turns off the -R option. */
 256                 case 'd':
 257                         f_listdir = 1;
 258                         f_recursive = 0;
 259                         break;
 260                 case 'f':
 261                         f_nosort = 1;
 262                         if (COMPAT_MODE("bin/ls", "Unix2003")) {
 263                                 fts_options |= FTS_SEEDOT;
 264                                 f_listdot = 1;
 265                         }
 266                         break;
 267                 case 'g':       /* Compatibility with Unix03 */
 268                         if (COMPAT_MODE("bin/ls", "Unix2003")) {
 269                                 f_group = 1;
 270                                 f_longform = 1;
 271                                 f_singlecol = 0;
 272                                 f_stream = 0;
 273                         }
 274                         break;
 275                 case 'h':
 276                         f_humanval = 1;
 277                         break;
 278                 case 'i':
 279                         f_inode = 1;
 280                         break;
 281                 case 'k':
 282                         f_kblocks = 1;
 283                         break;
 284                 case 'm':
 285                         f_stream = 1;
 286                         f_singlecol = 0;
 287                         f_longform = 0;
 288                         break;
 289                 case 'n':
 290                         f_numericonly = 1;
 291                         if (COMPAT_MODE("bin/ls", "Unix2003")) {
 292                                 f_longform = 1;
 293                                 f_singlecol = 0;
 294                                 f_stream = 0;
 295                         }
 296                         break;
 297                 case 'o':
 298                         if (COMPAT_MODE("bin/ls", "Unix2003")) {
 299                                 f_owner = 1;
 300                                 f_longform = 1;
 301                                 f_singlecol = 0;
 302                                 f_stream = 0;
 303                         } else {
 304                                 f_flags = 1;
 305                         }
 306                         break;
 307                 case 'p':
 308                         f_slash = 1;
 309                         f_type = 1;
 310                         break;
 311                 case 'q':
 312                         f_nonprint = 1;
 313                         f_octal = 0;
 314                         f_octal_escape = 0;
 315                         break;
 316                 case 'r':
 317                         f_reversesort = 1;
 318                         break;
 319                 case 'S':
 320                         /* Darwin 1.4.1 compatibility */
 321                         f_sizesort = 1;
 322                         break;
 323                 case 's':
 324                         f_size = 1;
 325                         break;
 326                 case 'T':
 327                         f_sectime = 1;
 328                         break;
 329                 case 't':
 330                         f_timesort = 1;
 331                         break;
 332                 case 'W':
 333                         f_whiteout = 1;
 334                         break;
 335                 case 'v':
 336                         /* Darwin 1.4.1 compatibility */
 337                         f_nonprint = 0;
 338                         break;
 339                 case 'b':
 340                         f_nonprint = 0;
 341                         f_octal = 0;
 342                         f_octal_escape = 1;
 343                         break;
 344                 case 'w':
 345                         f_nonprint = 0;
 346                         f_octal = 0;
 347                         f_octal_escape = 0;
 348                         break;
 349                 case 'e':
 350                         f_acl = 1;
 351                         break;
 352                 case '@':
 353                         f_xattr = 1;
 354                         break;
 355                 case 'O':
 356                         f_flags = 1;
 357                         break;
 358                 default:
 359                 case '?':
 360                         usage();
 361                 }
 362         }
 363         argc -= optind;
 364         argv += optind;
 365
 366         /* Enabling of colours is conditional on the environment. */
 367         if (getenv("CLICOLOR") &&
 368             (isatty(STDOUT_FILENO) || getenv("CLICOLOR_FORCE")))
 369 #ifdef COLORLS
 370                 if (tgetent(termcapbuf, getenv("TERM")) == 1) {
 371                         ansi_fgcol = tgetstr("AF", &bp);
 372                         ansi_bgcol = tgetstr("AB", &bp);
 373                         attrs_off = tgetstr("me", &bp);
 374                         enter_bold = tgetstr("md", &bp);
 375
 376                         /* To switch colours off use 'op' if
 377                          * available, otherwise use 'oc', or
 378                          * don't do colours at all. */
 379                         ansi_coloff = tgetstr("op", &bp);
 380                         if (!ansi_coloff)
 381                                 ansi_coloff = tgetstr("oc", &bp);
 382                         if (ansi_fgcol && ansi_bgcol && ansi_coloff)
 383                                 f_color = 1;
 384                 }
 385 #else
 386                 (void)fprintf(stderr, "Color support not compiled in.\n");
 387 #endif /*COLORLS*/
 388
 389 #ifdef COLORLS
 390         if (f_color) {
 391                 /*
 392                  * We can't put tabs and color sequences together:
 393                  * column number will be incremented incorrectly
 394                  * for "stty oxtabs" mode.
 395                  */
 396                 f_notabs = 1;
 397                 (void)signal(SIGINT, colorquit);
 398                 (void)signal(SIGQUIT, colorquit);
 399                 parsecolors(getenv("LSCOLORS"));
 400         }
 401 #endif
 402
 403         /*
 404          * If not -F, -i, -l, -s or -t options, don't require stat
 405          * information, unless in color mode in which case we do
 406          * need this to determine which colors to display.
 407          */
 408         if (!f_inode && !f_longform && !f_size && !f_timesort && !f_type && !f_sizesort
 409 #ifdef COLORLS
 410             && !f_color
 411 #endif
 412             )
 413                 fts_options |= FTS_NOSTAT;
 414
 415         /*
 416          * If not -F, -d or -l options, follow any symbolic links listed on
 417          * the command line.
 418          */
 419         if (!f_longform && !f_listdir && !f_type && !f_inode)
 420                 fts_options |= FTS_COMFOLLOW;
 421
 422         /*
 423          * If -W, show whiteout entries
 424          */
 425 #ifdef FTS_WHITEOUT
 426         if (f_whiteout)
 427                 fts_options |= FTS_WHITEOUT;
 428 #endif
 429
 430         /* If -l or -s, figure out block size. */
 431         if (f_longform || f_size) {
 432                 if (f_kblocks)
 433                         blocksize = 2;
 434                 else {
 435                         (void)getbsize(&notused, &blocksize);
 436                         blocksize /= 512;
 437                 }
 438         }
 439         /* Select a sort function. */
 440         if (f_reversesort) {
 441                 if (f_sizesort)
 442                         sortfcn = revsizecmp;
 443                 else if (!f_timesort)
 444                         sortfcn = revnamecmp;
 445                 else if (f_accesstime)
 446                         sortfcn = revacccmp;
 447                 else if (f_statustime)
 448                         sortfcn = revstatcmp;
 449                 else            /* Use modification time. */
 450                         sortfcn = revmodcmp;
 451         } else {
 452                 if (f_sizesort)
 453                         sortfcn = sizecmp;
 454                 else if (!f_timesort)
 455                         sortfcn = namecmp;
 456                 else if (f_accesstime)
 457                         sortfcn = acccmp;
 458                 else if (f_statustime)
 459                         sortfcn = statcmp;
 460                 else            /* Use modification time. */
 461                         sortfcn = modcmp;
 462         }
 463
 464         /* Select a print function. */
 465         if (f_singlecol)
 466                 printfcn = printscol;
 467         else if (f_longform)
 468                 printfcn = printlong;
 469         else if (f_stream)
 470                 printfcn = printstream;
 471         else
 472                 printfcn = printcol;
 473
 474         if (argc)
 475                 traverse(argc, argv, fts_options);
 476         else
 477                 traverse(1, dotav, fts_options);
 478         exit(rval);
 479 }
 480
 481 static int output;              /* If anything output. */
 482
 483 /*
 484  * Traverse() walks the logical directory structure specified by the argv list
 485  * in the order specified by the mastercmp() comparison function.  During the
 486  * traversal it passes linked lists of structures to display() which represent
 487  * a superset (may be exact set) of the files to be displayed.
 488  */
 489 static void
 490 traverse(int argc, char *argv[], int options)
 491 {
 492         FTS *ftsp;
 493         FTSENT *p, *chp;
 494         int ch_options, error;
 495
 496         if ((ftsp =
 497             fts_open(argv, options, f_nosort ? NULL : mastercmp)) == NULL)
 498                 err(1, "fts_open");
 499
 500         display(NULL, fts_children(ftsp, 0));
 501         if (f_listdir) {
 502                 fts_close(ftsp);
 503                 return;
 504         }
 505
 506         /*
 507          * If not recursing down this tree and don't need stat info, just get
 508          * the names.
 509          */
 510         ch_options = !f_recursive && options & FTS_NOSTAT ? FTS_NAMEONLY : 0;
 511
 512         while ((p = fts_read(ftsp)) != NULL)
 513                 switch (p->fts_info) {
 514                 case FTS_DC:
 515                         warnx("%s: directory causes a cycle", p->fts_name);
 516                         if (COMPAT_MODE("bin/ls", "Unix2003")) {
 517                                 rval = 1;
 518                         }
 519                         break;
 520                 case FTS_DNR:
 521                 case FTS_ERR:
 522                         warnx("%s: %s", p->fts_name, strerror(p->fts_errno));
 523                         rval = 1;
 524                         break;
 525                 case FTS_D:
 526                         if (p->fts_level != FTS_ROOTLEVEL &&
 527                             p->fts_name[0] == '.' && !f_listdot)
 528                                 break;
 529
 530                         /*
 531                          * If already output something, put out a newline as
 532                          * a separator.  If multiple arguments, precede each
 533                          * directory with its name.
 534                          */
 535                         if (output)
 536                                 (void)printf("\n%s:\n", p->fts_path);
 537                         else if (argc > 1) {
 538                                 (void)printf("%s:\n", p->fts_path);
 539                                 output = 1;
 540                         }
 541                         chp = fts_children(ftsp, ch_options);
 542                         display(p, chp);
 543
 544                         if (!f_recursive && chp != NULL)
 545                                 (void)fts_set(ftsp, p, FTS_SKIP);
 546                         break;
 547                 case FTS_SLNONE:        /* Same as default unless Unix conformance */
 548                         if (COMPAT_MODE("bin/ls", "Unix2003")) {
 549                                 if ((options & FTS_LOGICAL)!=0) {       /* -L was specified */
 550                                         if (p->fts_errno) {
 551                                                 warnx("%s: %s", p->fts_name, strerror(p->fts_errno));
 552                                                 rval = 1;
 553                                         }
 554                                 }
 555                         }
 556                         break;
 557                 default:
 558                         break;
 559                 }
 560         error = errno;
 561         fts_close(ftsp);
 562         errno = error;
 563
 564         if (errno)
 565                 err(1, "fts_read");
 566 }
 567
 568 /*
 569  * Display() takes a linked list of FTSENT structures and passes the list
 570  * along with any other necessary information to the print function.  P
 571  * points to the parent directory of the display list.
 572  */
 573 static void
 574 display(FTSENT *p, FTSENT *list)
 575 {
 576         struct stat *sp;
 577         DISPLAY d;
 578         FTSENT *cur;
 579         NAMES *np;
 580         off_t maxsize;
 581         u_int64_t btotal, maxblock;
 582         u_long lattrlen, maxlen, maxnlink, maxlattr;
 583         ino_t maxinode;
 584         int bcfile, maxflags;
 585         gid_t maxgroup;
 586         uid_t maxuser;
 587         size_t flen, ulen, glen;
 588         char *initmax;
 589         int entries, needstats;
 590         const char *user, *group;
 591         char *flags, *lattr = NULL;
 592         char buf[STRBUF_SIZEOF(u_quad_t) + 1];
 593         char ngroup[STRBUF_SIZEOF(uid_t) + 1];
 594         char nuser[STRBUF_SIZEOF(gid_t) + 1];
 595
 596         /*
 597          * If list is NULL there are two possibilities: that the parent
 598          * directory p has no children, or that fts_children() returned an
 599          * error.  We ignore the error case since it will be replicated
 600          * on the next call to fts_read() on the post-order visit to the
 601          * directory p, and will be signaled in traverse().
 602          */
 603         if (list == NULL)
 604                 return;
 605
 606         needstats = f_inode || f_longform || f_size;
 607         flen = 0;
 608         btotal = 0;
 609         initmax = getenv("LS_COLWIDTHS");
 610         /* Fields match -lios order.  New ones should be added at the end. */
 611         maxlattr = maxblock = maxinode = maxlen = maxnlink =
 612             maxuser = maxgroup = maxflags = maxsize = 0;
 613         if (initmax != NULL && *initmax != '\0') {
 614                 char *initmax2, *jinitmax;
 615                 int ninitmax;
 616
 617                 /* Fill-in "::" as "0:0:0" for the sake of scanf. */
 618                 jinitmax = initmax2 = malloc(strlen(initmax) * 2 + 2);
 619                 if (jinitmax == NULL)
 620                         err(1, "malloc");
 621                 if (*initmax == ':')
 622                         strcpy(initmax2, "0:"), initmax2 += 2;
 623                 else
 624                         *initmax2++ = *initmax, *initmax2 = '\0';
 625                 for (initmax++; *initmax != '\0'; initmax++) {
 626                         if (initmax[-1] == ':' && initmax[0] == ':') {
 627                                 *initmax2++ = '0';
 628                                 *initmax2++ = initmax[0];
 629                                 initmax2[1] = '\0';
 630                         } else {
 631                                 *initmax2++ = initmax[0];
 632                                 initmax2[1] = '\0';
 633                         }
 634                 }
 635                 if (initmax2[-1] == ':')
 636                         strcpy(initmax2, "0");
 637
 638                 ninitmax = sscanf(jinitmax,
 639 #if _DARWIN_FEATURE_64_BIT_INODE
 640                     " %llu : %qu : %lu : %i : %i : %i : %qu : %lu : %lu ",
 641 #else
 642                     " %lu : %qu : %lu : %i : %i : %i : %qu : %lu : %lu ",
 643 #endif
 644                     &maxinode, &maxblock, &maxnlink, &maxuser,
 645                     &maxgroup, &maxflags, &maxsize, &maxlen, &maxlattr);
 646                 f_notabs = 1;
 647                 switch (ninitmax) {
 648                 case 0:
 649                         maxinode = 0;
 650                         /* FALLTHROUGH */
 651                 case 1:
 652                         maxblock = 0;
 653                         /* FALLTHROUGH */
 654                 case 2:
 655                         maxnlink = 0;
 656                         /* FALLTHROUGH */
 657                 case 3:
 658                         maxuser = 0;
 659                         /* FALLTHROUGH */
 660                 case 4:
 661                         maxgroup = 0;
 662                         /* FALLTHROUGH */
 663                 case 5:
 664                         maxflags = 0;
 665                         /* FALLTHROUGH */
 666                 case 6:
 667                         maxsize = 0;
 668                         /* FALLTHROUGH */
 669                 case 7:
 670                         maxlen = 0;
 671                         /* FALLTHROUGH */
 672                 case 8:
 673                         maxlattr = 0;
 674                         /* FALLTHROUGH */
 675 #ifdef COLORLS
 676                         if (!f_color)
 677 #endif
 678                                 f_notabs = 0;
 679                         /* FALLTHROUGH */
 680                 default:
 681                         break;
 682                 }
 683                 maxinode = makenines(maxinode);
 684                 maxblock = makenines(maxblock);
 685                 maxnlink = makenines(maxnlink);
 686                 maxsize = makenines(maxsize);
 687         }
 688         bcfile = 0;
 689         flags = NULL;
 690         for (cur = list, entries = 0; cur; cur = cur->fts_link) {
 691                 if (cur->fts_info == FTS_ERR || cur->fts_info == FTS_NS) {
 692                         warnx("%s: %s",
 693                             cur->fts_name, strerror(cur->fts_errno));
 694                         cur->fts_number = NO_PRINT;
 695                         rval = 1;
 696                         continue;
 697                 }
 698                 /*
 699                  * P is NULL if list is the argv list, to which different rules
 700                  * apply.
 701                  */
 702                 if (p == NULL) {
 703                         /* Directories will be displayed later. */
 704                         if (cur->fts_info == FTS_D && !f_listdir) {
 705                                 cur->fts_number = NO_PRINT;
 706                                 continue;
 707                         }
 708                 } else {
 709                         /* Only display dot file if -a/-A set. */
 710                         if (cur->fts_name[0] == '.' && !f_listdot) {
 711                                 cur->fts_number = NO_PRINT;
 712                                 continue;
 713                         }
 714                 }
 715                 if (cur->fts_namelen > maxlen)
 716                         maxlen = cur->fts_namelen;
 717                 if (f_octal || f_octal_escape) {
 718                         u_long t = len_octal(cur->fts_name, cur->fts_namelen);
 719
 720                         if (t > maxlen)
 721                                 maxlen = t;
 722                 }
 723                 if (needstats) {
 724                         sp = cur->fts_statp;
 725                         if (sp->st_blocks > maxblock)
 726                                 maxblock = sp->st_blocks;
 727                         if (sp->st_ino > maxinode)
 728                                 maxinode = sp->st_ino;
 729                         if (sp->st_nlink > maxnlink)
 730                                 maxnlink = sp->st_nlink;
 731                         if (sp->st_size > maxsize)
 732                                 maxsize = sp->st_size;
 733
 734                         btotal += sp->st_blocks;
 735                         if (f_longform) {
 736                                 if (f_numericonly) {
 737                                         (void)snprintf(nuser, sizeof(nuser),
 738                                             "%u", sp->st_uid);
 739                                         (void)snprintf(ngroup, sizeof(ngroup),
 740                                             "%u", sp->st_gid);
 741                                         user = nuser;
 742                                         group = ngroup;
 743                                 } else {
 744                                         user = user_from_uid(sp->st_uid, 0);
 745                                         group = group_from_gid(sp->st_gid, 0);
 746                                 }
 747                                 if ((ulen = strlen(user)) > maxuser)
 748                                         maxuser = ulen;
 749                                 if ((glen = strlen(group)) > maxgroup)
 750                                         maxgroup = glen;
 751                                 if (f_flags) {
 752                                         flags = fflagstostr(sp->st_flags);
 753                                         if (flags != NULL && *flags == '\0') {
 754                                                 free(flags);
 755                                                 flags = strdup("-");
 756                                         }
 757                                         if (flags == NULL)
 758                                                 err(1, "fflagstostr");
 759                                         flen = strlen(flags);
 760                                         if (flen > (size_t)maxflags)
 761                                                 maxflags = flen;
 762                                 } else
 763                                         flen = 0;
 764                                 lattr = NULL;
 765                                 lattrlen = 0;
 766
 767                                 if ((np = malloc(sizeof(NAMES) + lattrlen +
 768                                     ulen + glen + flen + 4)) == NULL)
 769                                         err(1, "malloc");
 770
 771                                 np->user = &np->data[0];
 772                                 (void)strcpy(np->user, user);
 773                                 np->group = &np->data[ulen + 1];
 774                                 (void)strcpy(np->group, group);
 775
 776                                 if (S_ISCHR(sp->st_mode) ||
 777                                     S_ISBLK(sp->st_mode))
 778                                         bcfile = 1;
 779
 780                                 if (f_flags) {
 781                                         np->flags = &np->data[ulen + glen + 2];
 782                                         (void)strcpy(np->flags, flags);
 783                                         free(flags);
 784                                 }
 785                                 cur->fts_pointer = np;
 786                         }
 787                 }
 788                 ++entries;
 789         }
 790
 791         if (!entries)
 792                 return;
 793
 794         d.list = list;
 795         d.entries = entries;
 796         d.maxlen = maxlen;
 797         if (needstats) {
 798                 d.bcfile = bcfile;
 799                 d.btotal = btotal;
 800                 (void)snprintf(buf, sizeof(buf), "%qu", (u_int64_t)maxblock);
 801                 d.s_block = strlen(buf);
 802                 d.s_flags = maxflags;
 803                 d.s_lattr = maxlattr;
 804                 d.s_group = maxgroup;
 805 #if _DARWIN_FEATURE_64_BIT_INODE
 806                 (void)snprintf(buf, sizeof(buf), "%llu", maxinode);
 807 #else
 808                 (void)snprintf(buf, sizeof(buf), "%lu", maxinode);
 809 #endif
 810                 d.s_inode = strlen(buf);
 811                 (void)snprintf(buf, sizeof(buf), "%lu", maxnlink);
 812                 d.s_nlink = strlen(buf);
 813                 (void)snprintf(buf, sizeof(buf), "%qu", (u_int64_t)maxsize);
 814                 d.s_size = strlen(buf);
 815                 d.s_user = maxuser;
 816         }
 817         printfcn(&d);
 818         output = 1;
 819
 820         if (f_longform)
 821                 for (cur = list; cur; cur = cur->fts_link)
 822                         free(cur->fts_pointer);
 823 }
 824
 825 /*
 826  * Ordering for mastercmp:
 827  * If ordering the argv (fts_level = FTS_ROOTLEVEL) return non-directories
 828  * as larger than directories.  Within either group, use the sort function.
 829  * All other levels use the sort function.  Error entries remain unsorted.
 830  */
 831 static int
 832 mastercmp(const FTSENT **a, const FTSENT **b)
 833 {
 834         int a_info, b_info;
 835
 836         a_info = (*a)->fts_info;
 837         if (a_info == FTS_ERR)
 838                 return (0);
 839         b_info = (*b)->fts_info;
 840         if (b_info == FTS_ERR)
 841                 return (0);
 842
 843         if (a_info == FTS_NS || b_info == FTS_NS)
 844                 return (namecmp(*a, *b));
 845
 846         if (a_info != b_info &&
 847             (*a)->fts_level == FTS_ROOTLEVEL && !f_listdir) {
 848                 if (a_info == FTS_D)
 849                         return (1);
 850                 if (b_info == FTS_D)
 851                         return (-1);
 852         }
 853         return (sortfcn(*a, *b));
 854 }
 855
 856 /*
 857  * Makenines() returns (10**n)-1.  This is useful for converting a width
 858  * into a number that wide in decimal.
 859  */
 860 static u_quad_t
 861 makenines(u_quad_t n)
 862 {
 863         u_long i;
 864         u_quad_t reg;
 865
 866         reg = 1;
 867         /* Use a loop instead of pow(), since all values of n are small. */
 868         for (i = 0; i < n; i++)
 869                 reg *= 10;
 870         reg--;
 871
 872         return reg;
 873 }