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_birthtime;         /* use time of file birth */
 100        int f_flags;             /* show flags associated with a file */
 101        int f_humanval;          /* show human-readable file sizes */
 102        int f_inode;             /* print inode */
 103 static int f_kblocks;           /* print size in kilobytes */
 104 static int f_listdir;           /* list actual directory, not contents */
 105 static int f_listdot;           /* list files beginning with . */
 106        int f_longform;          /* long listing format */
 107        int f_nonprint;          /* show unprintables as ? */
 108 static int f_nosort;            /* don't sort output */
 109        int f_notabs;            /* don't use tab-separated multi-col output */
 110        int f_numericonly;       /* don't convert uid/gid to name */
 111        int f_octal;             /* show unprintables as \xxx */
 112        int f_octal_escape;      /* like f_octal but use C escapes if possible */
 113 static int f_recursive;         /* ls subdirectories also */
 114 static int f_reversesort;       /* reverse whatever sort is used */
 115        int f_sectime;           /* print the real time for all files */
 116 static int f_singlecol;         /* use single column output */
 117        int f_size;              /* list size in short listing */
 118        int f_slash;             /* similar to f_type, but only for dirs */
 119        int f_sortacross;        /* sort across rows, not down columns */
 120        int f_statustime;        /* use time of last mode change */
 121        int f_stream;            /* stream the output, separate with commas */
 122 static int f_timesort;          /* sort by time vice name */
 123 static int f_sizesort;          /* sort by size */
 124        int f_type;              /* add type character for non-regular files */
 125 static int f_whiteout;          /* show whiteout entries */
 126        int f_acl;               /* show ACLs in long listing */
 127        int f_xattr;             /* show extended attributes in long listing */
 128        int f_group;             /* show group */
 129        int f_owner;             /* show owner */
 130 #ifdef COLORLS
 131        int f_color;             /* add type in color for non-regular files */
 132
 133 char *ansi_bgcol;               /* ANSI sequence to set background colour */
 134 char *ansi_fgcol;               /* ANSI sequence to set foreground colour */
 135 char *ansi_coloff;              /* ANSI sequence to reset colours */
 136 char *attrs_off;                /* ANSI sequence to turn off attributes */
 137 char *enter_bold;               /* ANSI sequence to set color to bold mode */
 138 #endif
 139
 140 static int rval;
 141
 142 int
 143 main(int argc, char *argv[])
 144 {
 145         static char dot[] = ".", *dotav[] = {dot, NULL};
 146         struct winsize win;
 147         int ch, fts_options, notused;
 148         char *p;
 149 #ifdef COLORLS
 150         char termcapbuf[1024];  /* termcap definition buffer */
 151         char tcapbuf[512];      /* capability buffer */
 152         char *bp = tcapbuf;
 153 #endif
 154
 155         if (argc < 1)
 156                 usage();
 157         (void)setlocale(LC_ALL, "");
 158
 159         /* Terminal defaults to -Cq, non-terminal defaults to -1. */
 160         if (isatty(STDOUT_FILENO)) {
 161                 termwidth = 80;
 162                 if ((p = getenv("COLUMNS")) != NULL && *p != '\0')
 163                         termwidth = atoi(p);
 164                 else if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &win) != -1 &&
 165                     win.ws_col > 0)
 166                         termwidth = win.ws_col;
 167                 f_nonprint = 1;
 168         } else {
 169                 f_singlecol = 1;
 170                 /* retrieve environment variable, in case of explicit -C */
 171                 p = getenv("COLUMNS");
 172                 if (p)
 173                         termwidth = atoi(p);
 174         }
 175
 176         /* Root is -A automatically. */
 177         if (!getuid())
 178                 f_listdot = 1;
 179
 180         fts_options = FTS_PHYSICAL;
 181         while ((ch = getopt(argc, argv, "1@ABCFGHLOPRSTUWabcdefghiklmnopqrstuvwx"))
 182             != -1) {
 183                 switch (ch) {
 184                 /*
 185                  * The -1, -C, -x and -l options all override each other so
 186                  * shell aliasing works right.
 187                  */
 188                 case '1':
 189                         f_singlecol = 1;
 190                         f_longform = 0;
 191                         f_stream = 0;
 192                         break;
 193                 case 'B':
 194                         f_nonprint = 0;
 195                         f_octal = 1;
 196                         f_octal_escape = 0;
 197                         break;
 198                 case 'C':
 199                         f_sortacross = f_longform = f_singlecol = 0;
 200                         break;
 201                 case 'l':
 202                         f_longform = 1;
 203                         f_singlecol = 0;
 204                         f_stream = 0;
 205                         break;
 206                 case 'x':
 207                         f_sortacross = 1;
 208                         f_longform = 0;
 209                         f_singlecol = 0;
 210                         break;
 211                 /* The -c and -u options override each other. */
 212                 case 'c':
 213                         f_statustime = 1;
 214                         f_accesstime = f_birthtime = 0;
 215                         break;
 216                 case 'u':
 217                         f_accesstime = 1;
 218                         f_statustime = f_birthtime = 0;
 219                         break;
 220                 case 'U':
 221                         f_birthtime = 1;
 222                         f_statustime = f_accesstime = 0;
 223                         break;
 224                 case 'F':
 225                         f_type = 1;
 226                         f_slash = 0;
 227                         break;
 228                 case 'H':
 229                         if (COMPAT_MODE("bin/ls", "Unix2003")) {
 230                                 fts_options &= ~FTS_LOGICAL;
 231                                 fts_options |= FTS_PHYSICAL;
 232                                 fts_options |= FTS_COMFOLLOWDIR;
 233                         } else
 234                                 fts_options |= FTS_COMFOLLOW;
 235                         break;
 236                 case 'G':
 237                         setenv("CLICOLOR", "", 1);
 238                         break;
 239                 case 'L':
 240                         fts_options &= ~FTS_PHYSICAL;
 241                         fts_options |= FTS_LOGICAL;
 242                         if (COMPAT_MODE("bin/ls", "Unix2003")) {
 243                                 fts_options &= ~(FTS_COMFOLLOW|FTS_COMFOLLOWDIR);
 244                         }
 245                         break;
 246                 case 'P':
 247                         fts_options &= ~(FTS_COMFOLLOW|FTS_COMFOLLOWDIR);
 248                         fts_options &= ~FTS_LOGICAL;
 249                         fts_options |= FTS_PHYSICAL;
 250                         break;
 251                 case 'R':
 252                         f_recursive = 1;
 253                         break;
 254                 case 'a':
 255                         fts_options |= FTS_SEEDOT;
 256                         /* FALLTHROUGH */
 257                 case 'A':
 258                         f_listdot = 1;
 259                         break;
 260                 /* The -d option turns off the -R option. */
 261                 case 'd':
 262                         f_listdir = 1;
 263                         f_recursive = 0;
 264                         break;
 265                 case 'f':
 266                         f_nosort = 1;
 267                         if (COMPAT_MODE("bin/ls", "Unix2003")) {
 268                                 fts_options |= FTS_SEEDOT;
 269                                 f_listdot = 1;
 270                         }
 271                         break;
 272                 case 'g':       /* Compatibility with Unix03 */
 273                         if (COMPAT_MODE("bin/ls", "Unix2003")) {
 274                                 f_group = 1;
 275                                 f_longform = 1;
 276                                 f_singlecol = 0;
 277                                 f_stream = 0;
 278                         }
 279                         break;
 280                 case 'h':
 281                         f_humanval = 1;
 282                         break;
 283                 case 'i':
 284                         f_inode = 1;
 285                         break;
 286                 case 'k':
 287                         f_kblocks = 1;
 288                         break;
 289                 case 'm':
 290                         f_stream = 1;
 291                         f_singlecol = 0;
 292                         f_longform = 0;
 293                         break;
 294                 case 'n':
 295                         f_numericonly = 1;
 296                         if (COMPAT_MODE("bin/ls", "Unix2003")) {
 297                                 f_longform = 1;
 298                                 f_singlecol = 0;
 299                                 f_stream = 0;
 300                         }
 301                         break;
 302                 case 'o':
 303                         if (COMPAT_MODE("bin/ls", "Unix2003")) {
 304                                 f_owner = 1;
 305                                 f_longform = 1;
 306                                 f_singlecol = 0;
 307                                 f_stream = 0;
 308                         } else {
 309                                 f_flags = 1;
 310                         }
 311                         break;
 312                 case 'p':
 313                         f_slash = 1;
 314                         f_type = 1;
 315                         break;
 316                 case 'q':
 317                         f_nonprint = 1;
 318                         f_octal = 0;
 319                         f_octal_escape = 0;
 320                         break;
 321                 case 'r':
 322                         f_reversesort = 1;
 323                         break;
 324                 case 'S':
 325                         /* Darwin 1.4.1 compatibility */
 326                         f_sizesort = 1;
 327                         break;
 328                 case 's':
 329                         f_size = 1;
 330                         break;
 331                 case 'T':
 332                         f_sectime = 1;
 333                         break;
 334                 case 't':
 335                         f_timesort = 1;
 336                         break;
 337                 case 'W':
 338                         f_whiteout = 1;
 339                         break;
 340                 case 'v':
 341                         /* Darwin 1.4.1 compatibility */
 342                         f_nonprint = 0;
 343                         break;
 344                 case 'b':
 345                         f_nonprint = 0;
 346                         f_octal = 0;
 347                         f_octal_escape = 1;
 348                         break;
 349                 case 'w':
 350                         f_nonprint = 0;
 351                         f_octal = 0;
 352                         f_octal_escape = 0;
 353                         break;
 354                 case 'e':
 355                         f_acl = 1;
 356                         break;
 357                 case '@':
 358                         f_xattr = 1;
 359                         break;
 360                 case 'O':
 361                         f_flags = 1;
 362                         break;
 363                 default:
 364                 case '?':
 365                         usage();
 366                 }
 367         }
 368         argc -= optind;
 369         argv += optind;
 370
 371         /* Enabling of colours is conditional on the environment. */
 372         if (getenv("CLICOLOR") &&
 373             (isatty(STDOUT_FILENO) || getenv("CLICOLOR_FORCE")))
 374 #ifdef COLORLS
 375                 if (tgetent(termcapbuf, getenv("TERM")) == 1) {
 376                         ansi_fgcol = tgetstr("AF", &bp);
 377                         ansi_bgcol = tgetstr("AB", &bp);
 378                         attrs_off = tgetstr("me", &bp);
 379                         enter_bold = tgetstr("md", &bp);
 380
 381                         /* To switch colours off use 'op' if
 382                          * available, otherwise use 'oc', or
 383                          * don't do colours at all. */
 384                         ansi_coloff = tgetstr("op", &bp);
 385                         if (!ansi_coloff)
 386                                 ansi_coloff = tgetstr("oc", &bp);
 387                         if (ansi_fgcol && ansi_bgcol && ansi_coloff)
 388                                 f_color = 1;
 389                 }
 390 #else
 391                 (void)fprintf(stderr, "Color support not compiled in.\n");
 392 #endif /*COLORLS*/
 393
 394 #ifdef COLORLS
 395         if (f_color) {
 396                 /*
 397                  * We can't put tabs and color sequences together:
 398                  * column number will be incremented incorrectly
 399                  * for "stty oxtabs" mode.
 400                  */
 401                 f_notabs = 1;
 402                 (void)signal(SIGINT, colorquit);
 403                 (void)signal(SIGQUIT, colorquit);
 404                 parsecolors(getenv("LSCOLORS"));
 405         }
 406 #endif
 407
 408         /*
 409          * If not -F, -i, -l, -s or -t options, don't require stat
 410          * information, unless in color mode in which case we do
 411          * need this to determine which colors to display.
 412          */
 413         if (!f_inode && !f_longform && !f_size && !f_timesort && !f_type && !f_sizesort
 414 #ifdef COLORLS
 415             && !f_color
 416 #endif
 417             )
 418                 fts_options |= FTS_NOSTAT;
 419
 420         /*
 421          * If not -F, -d or -l options, follow any symbolic links listed on
 422          * the command line.
 423          */
 424         if (!f_longform && !f_listdir && !f_type && !f_inode)
 425                 fts_options |= FTS_COMFOLLOW;
 426
 427         /*
 428          * If -W, show whiteout entries
 429          */
 430 #ifdef FTS_WHITEOUT
 431         if (f_whiteout)
 432                 fts_options |= FTS_WHITEOUT;
 433 #endif
 434
 435         /* If -l or -s, figure out block size. */
 436         if (f_longform || f_size) {
 437                 if (f_kblocks)
 438                         blocksize = 2;
 439                 else {
 440                         (void)getbsize(&notused, &blocksize);
 441                         blocksize /= 512;
 442                 }
 443         }
 444         /* Select a sort function. */
 445         if (f_reversesort) {
 446                 if (f_sizesort)
 447                         sortfcn = revsizecmp;
 448                 else if (!f_timesort)
 449                         sortfcn = revnamecmp;
 450                 else if (f_accesstime)
 451                         sortfcn = revacccmp;
 452                 else if (f_statustime)
 453                         sortfcn = revstatcmp;
 454                 else if (f_birthtime)
 455                         sortfcn = revbirthcmp;
 456                 else            /* Use modification time. */
 457                         sortfcn = revmodcmp;
 458         } else {
 459                 if (f_sizesort)
 460                         sortfcn = sizecmp;
 461                 else if (!f_timesort)
 462                         sortfcn = namecmp;
 463                 else if (f_accesstime)
 464                         sortfcn = acccmp;
 465                 else if (f_statustime)
 466                         sortfcn = statcmp;
 467                 else if (f_birthtime)
 468                         sortfcn = birthcmp;
 469                 else            /* Use modification time. */
 470                         sortfcn = modcmp;
 471         }
 472
 473         /* Select a print function. */
 474         if (f_singlecol)
 475                 printfcn = printscol;
 476         else if (f_longform)
 477                 printfcn = printlong;
 478         else if (f_stream)
 479                 printfcn = printstream;
 480         else
 481                 printfcn = printcol;
 482
 483         if (argc)
 484                 traverse(argc, argv, fts_options);
 485         else
 486                 traverse(1, dotav, fts_options);
 487         exit(rval);
 488 }
 489
 490 static int output;              /* If anything output. */
 491
 492 /*
 493  * Traverse() walks the logical directory structure specified by the argv list
 494  * in the order specified by the mastercmp() comparison function.  During the
 495  * traversal it passes linked lists of structures to display() which represent
 496  * a superset (may be exact set) of the files to be displayed.
 497  */
 498 static void
 499 traverse(int argc, char *argv[], int options)
 500 {
 501         FTS *ftsp;
 502         FTSENT *p, *chp;
 503         int ch_options, error;
 504
 505         if ((ftsp =
 506             fts_open(argv, options, f_nosort ? NULL : mastercmp)) == NULL)
 507                 err(1, "fts_open");
 508
 509         display(NULL, fts_children(ftsp, 0));
 510         if (f_listdir) {
 511                 fts_close(ftsp);
 512                 return;
 513         }
 514
 515         /*
 516          * If not recursing down this tree and don't need stat info, just get
 517          * the names.
 518          */
 519         ch_options = !f_recursive && options & FTS_NOSTAT ? FTS_NAMEONLY : 0;
 520
 521         while ((p = fts_read(ftsp)) != NULL)
 522                 switch (p->fts_info) {
 523                 case FTS_DC:
 524                         warnx("%s: directory causes a cycle", p->fts_name);
 525                         if (COMPAT_MODE("bin/ls", "Unix2003")) {
 526                                 rval = 1;
 527                         }
 528                         break;
 529                 case FTS_DNR:
 530                 case FTS_ERR:
 531                         warnx("%s: %s", p->fts_name, strerror(p->fts_errno));
 532                         rval = 1;
 533                         break;
 534                 case FTS_D:
 535                         if (p->fts_level != FTS_ROOTLEVEL &&
 536                             p->fts_name[0] == '.' && !f_listdot)
 537                                 break;
 538
 539                         /*
 540                          * If already output something, put out a newline as
 541                          * a separator.  If multiple arguments, precede each
 542                          * directory with its name.
 543                          */
 544                         if (output)
 545                                 (void)printf("\n%s:\n", p->fts_path);
 546                         else if (argc > 1) {
 547                                 (void)printf("%s:\n", p->fts_path);
 548                                 output = 1;
 549                         }
 550                         chp = fts_children(ftsp, ch_options);
 551                         if (COMPAT_MODE("bin/ls", "Unix2003") && ((options & FTS_LOGICAL)!=0)) {
 552                                 FTSENT *curr;
 553                                 for (curr = chp; curr; curr = curr->fts_link) {
 554                                         if (curr->fts_info == FTS_SLNONE)
 555                                                 curr->fts_number = NO_PRINT;
 556                                 }
 557                         }
 558                         display(p, chp);
 559
 560                         if (!f_recursive && chp != NULL)
 561                                 (void)fts_set(ftsp, p, FTS_SKIP);
 562                         break;
 563                 case FTS_SLNONE:        /* Same as default unless Unix conformance */
 564                         if (COMPAT_MODE("bin/ls", "Unix2003")) {
 565                                 if ((options & FTS_LOGICAL)!=0) {       /* -L was specified */
 566                                         warnx("%s: %s", p->fts_name, strerror(p->fts_errno ?: ENOENT));
 567                                         rval = 1;
 568                                 }
 569                         }
 570                         break;
 571                 default:
 572                         break;
 573                 }
 574         error = errno;
 575         fts_close(ftsp);
 576         errno = error;
 577
 578         if (errno)
 579                 err(1, "fts_read");
 580 }
 581
 582 /*
 583  * Display() takes a linked list of FTSENT structures and passes the list
 584  * along with any other necessary information to the print function.  P
 585  * points to the parent directory of the display list.
 586  */
 587 static void
 588 display(FTSENT *p, FTSENT *list)
 589 {
 590         struct stat *sp;
 591         DISPLAY d;
 592         FTSENT *cur;
 593         NAMES *np;
 594         off_t maxsize;
 595         u_int64_t btotal, maxblock;
 596         u_long lattrlen, maxlen, maxnlink, maxlattr;
 597         ino_t maxinode;
 598         int bcfile, maxflags;
 599         gid_t maxgroup;
 600         uid_t maxuser;
 601         size_t flen, ulen, glen;
 602         char *initmax;
 603         int entries, needstats;
 604         const char *user, *group;
 605         char *flags, *lattr = NULL;
 606         char buf[STRBUF_SIZEOF(u_quad_t) + 1];
 607         char ngroup[STRBUF_SIZEOF(uid_t) + 1];
 608         char nuser[STRBUF_SIZEOF(gid_t) + 1];
 609
 610         /*
 611          * If list is NULL there are two possibilities: that the parent
 612          * directory p has no children, or that fts_children() returned an
 613          * error.  We ignore the error case since it will be replicated
 614          * on the next call to fts_read() on the post-order visit to the
 615          * directory p, and will be signaled in traverse().
 616          */
 617         if (list == NULL)
 618                 return;
 619
 620         needstats = f_inode || f_longform || f_size;
 621         flen = 0;
 622         btotal = 0;
 623         initmax = getenv("LS_COLWIDTHS");
 624         /* Fields match -lios order.  New ones should be added at the end. */
 625         maxlattr = maxblock = maxinode = maxlen = maxnlink =
 626             maxuser = maxgroup = maxflags = maxsize = 0;
 627         if (initmax != NULL && *initmax != '\0') {
 628                 char *initmax2, *jinitmax;
 629                 int ninitmax;
 630
 631                 /* Fill-in "::" as "0:0:0" for the sake of scanf. */
 632                 jinitmax = initmax2 = malloc(strlen(initmax) * 2 + 2);
 633                 if (jinitmax == NULL)
 634                         err(1, "malloc");
 635                 if (*initmax == ':')
 636                         strcpy(initmax2, "0:"), initmax2 += 2;
 637                 else
 638                         *initmax2++ = *initmax, *initmax2 = '\0';
 639                 for (initmax++; *initmax != '\0'; initmax++) {
 640                         if (initmax[-1] == ':' && initmax[0] == ':') {
 641                                 *initmax2++ = '0';
 642                                 *initmax2++ = initmax[0];
 643                                 initmax2[1] = '\0';
 644                         } else {
 645                                 *initmax2++ = initmax[0];
 646                                 initmax2[1] = '\0';
 647                         }
 648                 }
 649                 if (initmax2[-1] == ':')
 650                         strcpy(initmax2, "0");
 651
 652                 ninitmax = sscanf(jinitmax,
 653 #if _DARWIN_FEATURE_64_BIT_INODE
 654                     " %llu : %qu : %lu : %i : %i : %i : %qu : %lu : %lu ",
 655 #else
 656                     " %lu : %qu : %lu : %i : %i : %i : %qu : %lu : %lu ",
 657 #endif
 658                     &maxinode, &maxblock, &maxnlink, &maxuser,
 659                     &maxgroup, &maxflags, &maxsize, &maxlen, &maxlattr);
 660                 f_notabs = 1;
 661                 switch (ninitmax) {
 662                 case 0:
 663                         maxinode = 0;
 664                         /* FALLTHROUGH */
 665                 case 1:
 666                         maxblock = 0;
 667                         /* FALLTHROUGH */
 668                 case 2:
 669                         maxnlink = 0;
 670                         /* FALLTHROUGH */
 671                 case 3:
 672                         maxuser = 0;
 673                         /* FALLTHROUGH */
 674                 case 4:
 675                         maxgroup = 0;
 676                         /* FALLTHROUGH */
 677                 case 5:
 678                         maxflags = 0;
 679                         /* FALLTHROUGH */
 680                 case 6:
 681                         maxsize = 0;
 682                         /* FALLTHROUGH */
 683                 case 7:
 684                         maxlen = 0;
 685                         /* FALLTHROUGH */
 686                 case 8:
 687                         maxlattr = 0;
 688                         /* FALLTHROUGH */
 689 #ifdef COLORLS
 690                         if (!f_color)
 691 #endif
 692                                 f_notabs = 0;
 693                         /* FALLTHROUGH */
 694                 default:
 695                         break;
 696                 }
 697                 maxinode = makenines(maxinode);
 698                 maxblock = makenines(maxblock);
 699                 maxnlink = makenines(maxnlink);
 700                 maxsize = makenines(maxsize);
 701         }
 702         bcfile = 0;
 703         flags = NULL;
 704         for (cur = list, entries = 0; cur; cur = cur->fts_link) {
 705                 if (cur->fts_info == FTS_ERR || cur->fts_info == FTS_NS) {
 706                         warnx("%s: %s",
 707                             cur->fts_name, strerror(cur->fts_errno));
 708                         cur->fts_number = NO_PRINT;
 709                         rval = 1;
 710                         continue;
 711                 }
 712                 /*
 713                  * P is NULL if list is the argv list, to which different rules
 714                  * apply.
 715                  */
 716                 if (p == NULL) {
 717                         /* Directories will be displayed later. */
 718                         if (cur->fts_info == FTS_D && !f_listdir) {
 719                                 cur->fts_number = NO_PRINT;
 720                                 continue;
 721                         }
 722                 } else {
 723                         /* Only display dot file if -a/-A set. */
 724                         if (cur->fts_name[0] == '.' && !f_listdot) {
 725                                 cur->fts_number = NO_PRINT;
 726                                 continue;
 727                         }
 728                 }
 729                 if (cur->fts_namelen > maxlen)
 730                         maxlen = cur->fts_namelen;
 731                 if (f_octal || f_octal_escape) {
 732                         u_long t = len_octal(cur->fts_name, cur->fts_namelen);
 733
 734                         if (t > maxlen)
 735                                 maxlen = t;
 736                 }
 737                 if (needstats) {
 738                         sp = cur->fts_statp;
 739                         if (sp->st_blocks > maxblock)
 740                                 maxblock = sp->st_blocks;
 741                         if (sp->st_ino > maxinode)
 742                                 maxinode = sp->st_ino;
 743                         if (sp->st_nlink > maxnlink)
 744                                 maxnlink = sp->st_nlink;
 745                         if (sp->st_size > maxsize)
 746                                 maxsize = sp->st_size;
 747
 748                         btotal += sp->st_blocks;
 749                         if (f_longform) {
 750                                 if (f_numericonly) {
 751                                         (void)snprintf(nuser, sizeof(nuser),
 752                                             "%u", sp->st_uid);
 753                                         (void)snprintf(ngroup, sizeof(ngroup),
 754                                             "%u", sp->st_gid);
 755                                         user = nuser;
 756                                         group = ngroup;
 757                                 } else {
 758                                         user = user_from_uid(sp->st_uid, 0);
 759                                         group = group_from_gid(sp->st_gid, 0);
 760                                 }
 761                                 if ((ulen = strlen(user)) > maxuser)
 762                                         maxuser = ulen;
 763                                 if ((glen = strlen(group)) > maxgroup)
 764                                         maxgroup = glen;
 765                                 if (f_flags) {
 766                                         flags = fflagstostr(sp->st_flags);
 767                                         if (flags != NULL && *flags == '\0') {
 768                                                 free(flags);
 769                                                 flags = strdup("-");
 770                                         }
 771                                         if (flags == NULL)
 772                                                 err(1, "fflagstostr");
 773                                         flen = strlen(flags);
 774                                         if (flen > (size_t)maxflags)
 775                                                 maxflags = flen;
 776                                 } else
 777                                         flen = 0;
 778                                 lattr = NULL;
 779                                 lattrlen = 0;
 780
 781                                 if ((np = malloc(sizeof(NAMES) + lattrlen +
 782                                     ulen + glen + flen + 4)) == NULL)
 783                                         err(1, "malloc");
 784
 785                                 np->user = &np->data[0];
 786                                 (void)strcpy(np->user, user);
 787                                 np->group = &np->data[ulen + 1];
 788                                 (void)strcpy(np->group, group);
 789
 790                                 if (S_ISCHR(sp->st_mode) ||
 791                                     S_ISBLK(sp->st_mode))
 792                                         bcfile = 1;
 793
 794                                 if (f_flags) {
 795                                         np->flags = &np->data[ulen + glen + 2];
 796                                         (void)strcpy(np->flags, flags);
 797                                         free(flags);
 798                                 }
 799                                 cur->fts_pointer = np;
 800                         }
 801                 }
 802                 ++entries;
 803         }
 804
 805         if (!entries)
 806                 return;
 807
 808         d.list = list;
 809         d.entries = entries;
 810         d.maxlen = maxlen;
 811         if (needstats) {
 812                 d.bcfile = bcfile;
 813                 d.btotal = btotal;
 814                 (void)snprintf(buf, sizeof(buf), "%qu", (u_int64_t)maxblock);
 815                 d.s_block = strlen(buf);
 816                 d.s_flags = maxflags;
 817                 d.s_lattr = maxlattr;
 818                 d.s_group = maxgroup;
 819 #if _DARWIN_FEATURE_64_BIT_INODE
 820                 (void)snprintf(buf, sizeof(buf), "%llu", maxinode);
 821 #else
 822                 (void)snprintf(buf, sizeof(buf), "%lu", maxinode);
 823 #endif
 824                 d.s_inode = strlen(buf);
 825                 (void)snprintf(buf, sizeof(buf), "%lu", maxnlink);
 826                 d.s_nlink = strlen(buf);
 827                 (void)snprintf(buf, sizeof(buf), "%qu", (u_int64_t)maxsize);
 828                 d.s_size = strlen(buf);
 829                 d.s_user = maxuser;
 830         }
 831         printfcn(&d);
 832         output = 1;
 833
 834         if (f_longform)
 835                 for (cur = list; cur; cur = cur->fts_link)
 836                         free(cur->fts_pointer);
 837 }
 838
 839 /*
 840  * Ordering for mastercmp:
 841  * If ordering the argv (fts_level = FTS_ROOTLEVEL) return non-directories
 842  * as larger than directories.  Within either group, use the sort function.
 843  * All other levels use the sort function.  Error entries remain unsorted.
 844  */
 845 static int
 846 mastercmp(const FTSENT **a, const FTSENT **b)
 847 {
 848         int a_info, b_info;
 849
 850         a_info = (*a)->fts_info;
 851         if (a_info == FTS_ERR)
 852                 return (0);
 853         b_info = (*b)->fts_info;
 854         if (b_info == FTS_ERR)
 855                 return (0);
 856
 857         if (a_info == FTS_NS || b_info == FTS_NS)
 858                 return (namecmp(*a, *b));
 859
 860         if (a_info != b_info &&
 861             (*a)->fts_level == FTS_ROOTLEVEL && !f_listdir) {
 862                 if (a_info == FTS_D)
 863                         return (1);
 864                 if (b_info == FTS_D)
 865                         return (-1);
 866         }
 867         return (sortfcn(*a, *b));
 868 }
 869
 870 /*
 871  * Makenines() returns (10**n)-1.  This is useful for converting a width
 872  * into a number that wide in decimal.
 873  */
 874 static u_quad_t
 875 makenines(u_quad_t n)
 876 {
 877         u_long i;
 878         u_quad_t reg;
 879
 880         reg = 1;
 881         /* Use a loop instead of pow(), since all values of n are small. */
 882         for (i = 0; i < n; i++)
 883                 reg *= 10;
 884         reg--;
 885
 886         return reg;
 887 }