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