bin/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. Neither the name of the University nor the names of its contributors
  17  *    may be used to endorse or promote products derived from this software
  18  *    without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  *
  32  * @(#) Copyright (c) 1989, 1993, 1994 The Regents of the University of California.  All rights reserved.
  33  * @(#)ls.c     8.5 (Berkeley) 4/2/94
  34  * $FreeBSD: src/bin/ls/ls.c,v 1.78 2004/06/08 09:30:10 das Exp $
  35  */
  36
  37 #include <sys/types.h>
  38 #include <sys/stat.h>
  39 #include <sys/ioctl.h>
  40
  41 #include <dirent.h>
  42 #include <err.h>
  43 #include <errno.h>
  44 #include <fts.h>
  45 #include <grp.h>
  46 #include <inttypes.h>
  47 #include <limits.h>
  48 #include <locale.h>
  49 #include <pwd.h>
  50 #include <stdio.h>
  51 #include <stdlib.h>
  52 #include <string.h>
  53 #include <unistd.h>
  54 #ifdef COLORLS
  55 #include <termcap.h>
  56 #include <signal.h>
  57 #endif
  58
  59 #include "ls.h"
  60 #include "extern.h"
  61
  62 /*
  63  * Upward approximation of the maximum number of characters needed to
  64  * represent a value of integral type t as a string, excluding the
  65  * NUL terminator, with provision for a sign.
  66  */
  67 #define STRBUF_SIZEOF(t)        (1 + CHAR_BIT * sizeof(t) / 3 + 1)
  68
  69 /*
  70  * MAKENINES(n) turns n into (10**n)-1.  This is useful for converting a width
  71  * into a number that wide in decimal.
  72  * XXX: Overflows are not considered.
  73  */
  74 #define MAKENINES(n)                                                    \
  75         do {                                                            \
  76                 intmax_t i;                                             \
  77                                                                         \
  78                 /* Use a loop as all values of n are small. */          \
  79                 for (i = 1; n > 0; i *= 10)                             \
  80                         n--;                                            \
  81                 n = i - 1;                                              \
  82         } while(0)
  83
  84 static void      display(const FTSENT *, FTSENT *);
  85 static int       mastercmp(const FTSENT * const *, const FTSENT * const *);
  86 static void      traverse(int, char **, int);
  87
  88 static void (*printfcn)(const DISPLAY *);
  89 static int (*sortfcn)(const FTSENT *, const FTSENT *);
  90
  91 long blocksize;                 /* block size units */
  92 int termwidth = 80;             /* default terminal width */
  93
  94 /* flags */
  95        int f_accesstime;        /* use time of last access */
  96        int f_flags;             /* show flags associated with a file */
  97        int f_humanval;          /* show human-readable file sizes */
  98        int f_inode;             /* print inode */
  99 static int f_kblocks;           /* print size in kilobytes */
 100 static int f_listdir;           /* list actual directory, not contents */
 101 static int f_listdot;           /* list files beginning with . */
 102        int f_longform;          /* long listing format */
 103        int f_nanotime;          /* include nanotime in long format */
 104        int f_nonprint;          /* show unprintables as ? */
 105 static int f_nosort;            /* don't sort output */
 106        int f_notabs;            /* don't use tab-separated multi-col output */
 107 static int f_numericonly;       /* don't convert uid/gid to name */
 108        int f_octal;             /* show unprintables as \xxx */
 109        int f_octal_escape;      /* like f_octal but use C escapes if possible */
 110 static int f_recursive;         /* ls subdirectories also */
 111 static int f_reversesort;       /* reverse whatever sort is used */
 112        int f_sectime;           /* print the real time for all files */
 113 static int f_singlecol;         /* use single column output */
 114        int f_size;              /* list size in short listing */
 115 static int f_sizesort;          /* Sort by size */
 116        int f_slash;             /* similar to f_type, but only for dirs */
 117        int f_sortacross;        /* sort across rows, not down columns */
 118        int f_statustime;        /* use time of last mode change */
 119 static int f_stream;            /* stream the output, separate with commas */
 120        const char *f_timeformat;        /* user-specified time format */
 121 static int f_timesort;          /* sort by time vice name */
 122        int f_type;              /* add type character for non-regular files */
 123 static int f_whiteout;          /* show whiteout entries */
 124 #ifdef COLORLS
 125        int f_color;             /* add type in color for non-regular files */
 126
 127 char *ansi_bgcol;               /* ANSI sequence to set background colour */
 128 char *ansi_fgcol;               /* ANSI sequence to set foreground colour */
 129 char *ansi_coloff;              /* ANSI sequence to reset colours */
 130 char *attrs_off;                /* ANSI sequence to turn off attributes */
 131 char *enter_bold;               /* ANSI sequence to set color to bold mode */
 132 #endif
 133
 134 static int rval;
 135
 136 int
 137 main(int argc, char *argv[])
 138 {
 139         static char dot[] = ".", *dotav[] = {dot, NULL};
 140         struct winsize win;
 141         int ch, fts_options, notused;
 142         char *p;
 143         const char nanotime_format[] = "%Y-%m-%d %H:%M:%S";
 144 #ifdef COLORLS
 145         char termcapbuf[1024];  /* termcap definition buffer */
 146         char tcapbuf[512];      /* capability buffer */
 147         char *bp = tcapbuf;
 148 #endif
 149
 150         setlocale(LC_ALL, "");
 151
 152         /* Terminal defaults to -Cq, non-terminal defaults to -1. */
 153         if (isatty(STDOUT_FILENO)) {
 154                 termwidth = 80;
 155                 if ((p = getenv("COLUMNS")) != NULL && *p != '\0')
 156                         termwidth = atoi(p);
 157                 else if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &win) != -1 &&
 158                     win.ws_col > 0)
 159                         termwidth = win.ws_col;
 160                 f_nonprint = 1;
 161         } else {
 162                 f_singlecol = 1;
 163                 /* retrieve environment variable, in case of explicit -C */
 164                 p = getenv("COLUMNS");
 165                 if (p)
 166                         termwidth = atoi(p);
 167         }
 168
 169         /*
 170          * Root is -A automatically.  Turn off if -I specified.
 171          */
 172         if (getuid() == 0)
 173                 f_listdot = 1;
 174
 175         fts_options = FTS_PHYSICAL;
 176         while ((ch = getopt(argc, argv,
 177             "1ABCD:FGHILPRSTW_abcdfghiklmnopqrstuwx")) != -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 'D':
 216                         f_timeformat = optarg;
 217                         break;
 218                 case 'F':
 219                         f_type = 1;
 220                         f_slash = 0;
 221                         break;
 222                 case 'H':
 223                         fts_options |= FTS_COMFOLLOW;
 224                         break;
 225                 case 'I':
 226                         f_listdot = 0;
 227                         break;
 228                 case 'G':
 229                         if (setenv("CLICOLOR", "", 1) != 0)
 230                                 warn("setenv: cannot set CLICOLOR");
 231                         break;
 232                 case 'L':
 233                         fts_options &= ~FTS_PHYSICAL;
 234                         fts_options |= FTS_LOGICAL;
 235                         break;
 236                 case 'P':
 237                         fts_options &= ~FTS_COMFOLLOW;
 238                         fts_options &= ~FTS_LOGICAL;
 239                         fts_options |= FTS_PHYSICAL;
 240                         break;
 241                 case 'R':
 242                         f_recursive = 1;
 243                         break;
 244                 /* The -t and -S options override each other. */
 245                 case 'S':
 246                         f_sizesort = 1;
 247                         f_timesort = 0;
 248                         break;
 249                 case 't':
 250                         f_timesort = 1;
 251                         f_sizesort = 0;
 252                         break;
 253                 case 'f':
 254                         f_nosort = 1;
 255                         /* FALLTHROUGH */
 256                 case 'a':
 257                         fts_options |= FTS_SEEDOT;
 258                         /* FALLTHROUGH */
 259                 case 'A':
 260                         f_listdot = 1;
 261                         break;
 262                 /* The -d option turns off the -R option. */
 263                 case 'd':
 264                         f_listdir = 1;
 265                         f_recursive = 0;
 266                         break;
 267                 case 'g':       /* Compatibility with 4.3BSD. */
 268                         break;
 269                 case 'h':
 270                         f_humanval = 1;
 271                         break;
 272                 case 'i':
 273                         f_inode = 1;
 274                         break;
 275                 case 'k':
 276                         f_humanval = 0;
 277                         f_kblocks = 1;
 278                         break;
 279                 case 'm':
 280                         f_stream = 1;
 281                         f_singlecol = 0;
 282                         f_longform = 0;
 283                         break;
 284                 case 'n':
 285                         f_numericonly = 1;
 286                         break;
 287                 case 'o':
 288                         f_flags = 1;
 289                         break;
 290                 case 'p':
 291                         f_slash = 1;
 292                         f_type = 1;
 293                         break;
 294                 case 'q':
 295                         f_nonprint = 1;
 296                         f_octal = 0;
 297                         f_octal_escape = 0;
 298                         break;
 299                 case 'r':
 300                         f_reversesort = 1;
 301                         break;
 302                 case 's':
 303                         f_size = 1;
 304                         break;
 305                 case 'T':
 306                         f_sectime = 1;
 307                         break;
 308                 case 'W':
 309                         f_whiteout = 1;
 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 '_':
 322                         f_nanotime = 1;
 323                         f_timeformat = nanotime_format;
 324                         break;
 325                 default:
 326                 case '?':
 327                         usage();
 328                 }
 329         }
 330         argc -= optind;
 331         argv += optind;
 332
 333         /* Enabling of colours is conditional on the environment. */
 334         if (getenv("CLICOLOR") &&
 335             (isatty(STDOUT_FILENO) || getenv("CLICOLOR_FORCE")))
 336 #ifdef COLORLS
 337                 if (tgetent(termcapbuf, getenv("TERM")) == 1) {
 338                         ansi_fgcol = tgetstr("AF", &bp);
 339                         ansi_bgcol = tgetstr("AB", &bp);
 340                         attrs_off = tgetstr("me", &bp);
 341                         enter_bold = tgetstr("md", &bp);
 342
 343                         /* To switch colours off use 'op' if
 344                          * available, otherwise use 'oc', or
 345                          * don't do colours at all. */
 346                         ansi_coloff = tgetstr("op", &bp);
 347                         if (!ansi_coloff)
 348                                 ansi_coloff = tgetstr("oc", &bp);
 349                         if (ansi_fgcol && ansi_bgcol && ansi_coloff)
 350                                 f_color = 1;
 351                 }
 352 #else
 353                 fprintf(stderr, "Color support not compiled in.\n");
 354 #endif /*COLORLS*/
 355
 356 #ifdef COLORLS
 357         if (f_color) {
 358                 /*
 359                  * We can't put tabs and color sequences together:
 360                  * column number will be incremented incorrectly
 361                  * for "stty oxtabs" mode.
 362                  */
 363                 f_notabs = 1;
 364                 signal(SIGINT, colorquit);
 365                 signal(SIGQUIT, colorquit);
 366                 parsecolors(getenv("LSCOLORS"));
 367         }
 368 #endif
 369
 370         /*
 371          * If not -F, -i, -l, -s, -S or -t options, don't require stat
 372          * information, unless in color mode in which case we do
 373          * need this to determine which colors to display.
 374          */
 375         if (!f_inode && !f_longform && !f_size && !f_timesort &&
 376             !f_sizesort && !f_type
 377 #ifdef COLORLS
 378             && !f_color
 379 #endif
 380             )
 381                 fts_options |= FTS_NOSTAT;
 382
 383         /*
 384          * If not -F, -d or -l options, follow any symbolic links listed on
 385          * the command line.
 386          */
 387         if (!f_longform && !f_listdir && !f_type)
 388                 fts_options |= FTS_COMFOLLOW;
 389
 390         /*
 391          * If -W, show whiteout entries
 392          */
 393 #ifdef FTS_WHITEOUT
 394         if (f_whiteout)
 395                 fts_options |= FTS_WHITEOUT;
 396 #endif
 397
 398         /* If -l or -s, figure out block size. */
 399         if (f_longform || f_size) {
 400                 if (f_kblocks)
 401                         blocksize = 2;
 402                 else {
 403                         getbsize(&notused, &blocksize);
 404                         blocksize /= 512;
 405                 }
 406         }
 407         /* Select a sort function. */
 408         if (f_reversesort) {
 409                 if (!f_timesort && !f_sizesort)
 410                         sortfcn = revnamecmp;
 411                 else if (f_sizesort)
 412                         sortfcn = revsizecmp;
 413                 else if (f_accesstime)
 414                         sortfcn = revacccmp;
 415                 else if (f_statustime)
 416                         sortfcn = revstatcmp;
 417                 else            /* Use modification time. */
 418                         sortfcn = revmodcmp;
 419         } else {
 420                 if (!f_timesort && !f_sizesort)
 421                         sortfcn = namecmp;
 422                 else if (f_sizesort)
 423                         sortfcn = sizecmp;
 424                 else if (f_accesstime)
 425                         sortfcn = acccmp;
 426                 else if (f_statustime)
 427                         sortfcn = statcmp;
 428                 else            /* Use modification time. */
 429                         sortfcn = modcmp;
 430         }
 431
 432         /* Select a print function. */
 433         if (f_singlecol)
 434                 printfcn = printscol;
 435         else if (f_longform)
 436                 printfcn = printlong;
 437         else if (f_stream)
 438                 printfcn = printstream;
 439         else
 440                 printfcn = printcol;
 441
 442         if (argc)
 443                 traverse(argc, argv, fts_options);
 444         else
 445                 traverse(1, dotav, fts_options);
 446         exit(rval);
 447 }
 448
 449 static int output;              /* If anything output. */
 450
 451 /*
 452  * Traverse() walks the logical directory structure specified by the argv list
 453  * in the order specified by the mastercmp() comparison function.  During the
 454  * traversal it passes linked lists of structures to display() which represent
 455  * a superset (may be exact set) of the files to be displayed.
 456  */
 457 static void
 458 traverse(int argc, char *argv[], int options)
 459 {
 460         FTS *ftsp;
 461         FTSENT *p, *chp;
 462         int ch_options, error;
 463
 464         if ((ftsp =
 465             fts_open(argv, options, f_nosort ? NULL : mastercmp)) == NULL)
 466                 err(1, "fts_open");
 467
 468         /*
 469          * We ignore errors from fts_children here since they will be
 470          * replicated and signalled on the next call to fts_read() below.
 471          */
 472         chp = fts_children(ftsp, 0);
 473         if (chp != NULL)
 474                 display(NULL, chp);
 475         if (f_listdir) {
 476                 fts_close(ftsp);
 477                 return;
 478         }
 479
 480         /*
 481          * If not recursing down this tree and don't need stat info, just get
 482          * the names.
 483          */
 484         ch_options = !f_recursive && options & FTS_NOSTAT ? FTS_NAMEONLY : 0;
 485
 486         while ((p = fts_read(ftsp)) != NULL)
 487                 switch (p->fts_info) {
 488                 case FTS_DC:
 489                         warnx("%s: directory causes a cycle", p->fts_name);
 490                         break;
 491                 case FTS_DNR:
 492                 case FTS_ERR:
 493                         warnx("%s: %s", p->fts_name, strerror(p->fts_errno));
 494                         rval = 1;
 495                         break;
 496                 case FTS_D:
 497                         if (p->fts_level != FTS_ROOTLEVEL &&
 498                             p->fts_name[0] == '.' && !f_listdot)
 499                                 break;
 500
 501                         /*
 502                          * If already output something, put out a newline as
 503                          * a separator.  If multiple arguments, precede each
 504                          * directory with its name.
 505                          */
 506                         if (output) {
 507                                 putchar('\n');
 508                                 printname(p->fts_path);
 509                                 puts(":");
 510                         } else if (argc > 1) {
 511                                 printname(p->fts_path);
 512                                 puts(":");
 513                                 output = 1;
 514                         }
 515                         chp = fts_children(ftsp, ch_options);
 516                         display(p, chp);
 517
 518                         if (!f_recursive && chp != NULL)
 519                                 fts_set(ftsp, p, FTS_SKIP);
 520                         break;
 521                 default:
 522                         break;
 523                 }
 524         error = errno;
 525         fts_close(ftsp);
 526         errno = error;
 527         if (errno)
 528                 err(1, "fts_read");
 529 }
 530
 531 /*
 532  * Display() takes a linked list of FTSENT structures and passes the list
 533  * along with any other necessary information to the print function.  P
 534  * points to the parent directory of the display list.
 535  */
 536 static void
 537 display(const FTSENT *p, FTSENT *list)
 538 {
 539         struct stat *sp;
 540         DISPLAY d;
 541         FTSENT *cur;
 542         NAMES *np;
 543         off_t maxsize;
 544         u_long btotal, maxlen;
 545         int64_t maxblock;
 546         ino_t maxinode;
 547         nlink_t maxnlink;
 548         int bcfile, maxflags;
 549         gid_t maxgroup;
 550         uid_t maxuser;
 551         size_t flen, ulen, glen;
 552         char *initmax;
 553         int entries, needstats;
 554         const char *user, *group;
 555         char *flags;
 556         char buf[STRBUF_SIZEOF(u_quad_t) + 1];
 557         char ngroup[STRBUF_SIZEOF(uid_t) + 1];
 558         char nuser[STRBUF_SIZEOF(gid_t) + 1];
 559
 560         needstats = f_inode || f_longform || f_size;
 561         btotal = 0;
 562         initmax = getenv("LS_COLWIDTHS");
 563         /* Fields match -lios order.  New ones should be added at the end. */
 564         maxblock = maxinode = maxlen = maxnlink =
 565             maxuser = maxgroup = maxflags = maxsize = 0;
 566         if (initmax != NULL && *initmax != '\0') {
 567                 char *initmax2, *jinitmax;
 568                 int ninitmax;
 569
 570                 /* Fill-in "::" as "0:0:0" for the sake of scanf. */
 571                 jinitmax = malloc(strlen(initmax) * 2 + 2);
 572                 if (jinitmax == NULL)
 573                         err(1, "malloc");
 574                 initmax2 = jinitmax;
 575                 if (*initmax == ':')
 576                         strcpy(initmax2, "0:"), initmax2 += 2;
 577                 else
 578                         *initmax2++ = *initmax, *initmax2 = '\0';
 579                 for (initmax++; *initmax != '\0'; initmax++) {
 580                         if (initmax[-1] == ':' && initmax[0] == ':') {
 581                                 *initmax2++ = '0';
 582                                 *initmax2++ = initmax[0];
 583                                 initmax2[1] = '\0';
 584                         } else {
 585                                 *initmax2++ = initmax[0];
 586                                 initmax2[1] = '\0';
 587                         }
 588                 }
 589                 if (initmax2[-1] == ':')
 590                         strcpy(initmax2, "0");
 591
 592                 ninitmax = sscanf(jinitmax,
 593                     " %ju : %jd : %u : %i : %i : %i : %jd : %lu ",
 594                     &maxinode, &maxblock, &maxnlink, &maxuser,
 595                     &maxgroup, &maxflags, &maxsize, &maxlen);
 596                 f_notabs = 1;
 597                 switch (ninitmax) {
 598                 case 0:
 599                         maxinode = 0;
 600                         /* FALLTHROUGH */
 601                 case 1:
 602                         maxblock = 0;
 603                         /* FALLTHROUGH */
 604                 case 2:
 605                         maxnlink = 0;
 606                         /* FALLTHROUGH */
 607                 case 3:
 608                         maxuser = 0;
 609                         /* FALLTHROUGH */
 610                 case 4:
 611                         maxgroup = 0;
 612                         /* FALLTHROUGH */
 613                 case 5:
 614                         maxflags = 0;
 615                         /* FALLTHROUGH */
 616                 case 6:
 617                         maxsize = 0;
 618                         /* FALLTHROUGH */
 619                 case 7:
 620                         maxlen = 0;
 621                         /* FALLTHROUGH */
 622 #ifdef COLORLS
 623                         if (!f_color)
 624 #endif
 625                                 f_notabs = 0;
 626                         /* FALLTHROUGH */
 627                 default:
 628                         break;
 629                 }
 630                 MAKENINES(maxinode);
 631                 MAKENINES(maxblock);
 632                 MAKENINES(maxnlink);
 633                 MAKENINES(maxsize);
 634                 free(jinitmax);
 635         }
 636         bcfile = 0;
 637         flags = NULL;
 638         for (cur = list, entries = 0; cur; cur = cur->fts_link) {
 639                 if (cur->fts_info == FTS_ERR || cur->fts_info == FTS_NS) {
 640                         warnx("%s: %s",
 641                             cur->fts_name, strerror(cur->fts_errno));
 642                         cur->fts_number = NO_PRINT;
 643                         rval = 1;
 644                         continue;
 645                 }
 646                 /*
 647                  * P is NULL if list is the argv list, to which different rules
 648                  * apply.
 649                  */
 650                 if (p == NULL) {
 651                         /* Directories will be displayed later. */
 652                         if (cur->fts_info == FTS_D && !f_listdir) {
 653                                 cur->fts_number = NO_PRINT;
 654                                 continue;
 655                         }
 656                 } else {
 657                         /* Only display dot file if -a/-A set. */
 658                         if (cur->fts_name[0] == '.' && !f_listdot) {
 659                                 cur->fts_number = NO_PRINT;
 660                                 continue;
 661                         }
 662                 }
 663                 if (cur->fts_namelen > maxlen)
 664                         maxlen = cur->fts_namelen;
 665                 if (f_octal || f_octal_escape) {
 666                         u_long t = len_octal(cur->fts_name, cur->fts_namelen);
 667
 668                         if (t > maxlen)
 669                                 maxlen = t;
 670                 }
 671                 if (needstats) {
 672                         sp = cur->fts_statp;
 673                         if (sp->st_blocks > maxblock)
 674                                 maxblock = sp->st_blocks;
 675                         if (sp->st_ino > maxinode)
 676                                 maxinode = sp->st_ino;
 677                         if (sp->st_nlink > maxnlink)
 678                                 maxnlink = sp->st_nlink;
 679                         if (sp->st_size > maxsize)
 680                                 maxsize = sp->st_size;
 681
 682                         btotal += sp->st_blocks;
 683                         if (f_longform) {
 684                                 if (f_numericonly) {
 685                                         snprintf(nuser, sizeof(nuser),
 686                                             "%u", sp->st_uid);
 687                                         snprintf(ngroup, sizeof(ngroup),
 688                                             "%u", sp->st_gid);
 689                                         user = nuser;
 690                                         group = ngroup;
 691                                 } else {
 692                                         user = user_from_uid(sp->st_uid, 0);
 693                                         group = group_from_gid(sp->st_gid, 0);
 694                                 }
 695                                 if ((ulen = strlen(user)) > maxuser)
 696                                         maxuser = ulen;
 697                                 if ((glen = strlen(group)) > maxgroup)
 698                                         maxgroup = glen;
 699                                 if (f_flags) {
 700                                         flags = fflagstostr(sp->st_flags);
 701                                         if (flags != NULL && *flags == '\0') {
 702                                                 free(flags);
 703                                                 flags = strdup("-");
 704                                         }
 705                                         if (flags == NULL)
 706                                                 err(1, "flagstostr");
 707                                         flen = strlen(flags);
 708                                         if (flen > (size_t)maxflags)
 709                                                 maxflags = flen;
 710                                 } else {
 711                                         flen = 0;
 712                                 }
 713
 714                                 if ((np = malloc(sizeof(NAMES) +
 715                                     ulen + glen + flen + 3)) == NULL)
 716                                         err(1, "malloc");
 717
 718                                 np->user = &np->data[0];
 719                                 strcpy(np->user, user);
 720                                 np->group = &np->data[ulen + 1];
 721                                 strcpy(np->group, group);
 722
 723                                 if (S_ISCHR(sp->st_mode) ||
 724                                     S_ISBLK(sp->st_mode))
 725                                         bcfile = 1;
 726
 727                                 if (f_flags) {
 728                                         np->flags = &np->data[ulen + glen + 2];
 729                                         strcpy(np->flags, flags);
 730                                         free(flags);
 731                                 }
 732                                 cur->fts_pointer = np;
 733                         }
 734                 }
 735                 ++entries;
 736         }
 737
 738         /*
 739          * If there are no entries to display, we normally stop right
 740          * here.  However, we must continue if we have to display the
 741          * total block count.  In this case, we display the total only
 742          * on the second (p != NULL) pass.
 743          */
 744         if (!entries && (!(f_longform || f_size) || p == NULL))
 745                 return;
 746
 747         d.list = list;
 748         d.entries = entries;
 749         d.maxlen = maxlen;
 750         if (needstats) {
 751                 d.bcfile = bcfile;
 752                 d.btotal = btotal;
 753                 snprintf(buf, sizeof(buf), "%ji", (intmax_t)maxblock);
 754                 d.s_block = strlen(buf);
 755                 d.s_flags = maxflags;
 756                 d.s_group = maxgroup;
 757                 snprintf(buf, sizeof(buf), "%ju", (uintmax_t)maxinode);
 758                 d.s_inode = strlen(buf);
 759                 snprintf(buf, sizeof(buf), "%u", maxnlink);
 760                 d.s_nlink = strlen(buf);
 761                 snprintf(buf, sizeof(buf), "%jd", (intmax_t)maxsize);
 762                 d.s_size = strlen(buf);
 763                 d.s_user = maxuser;
 764         }
 765         printfcn(&d);
 766         output = 1;
 767
 768         if (f_longform)
 769                 for (cur = list; cur; cur = cur->fts_link)
 770                         free(cur->fts_pointer);
 771 }
 772
 773 /*
 774  * Ordering for mastercmp:
 775  * If ordering the argv (fts_level = FTS_ROOTLEVEL) return non-directories
 776  * as larger than directories.  Within either group, use the sort function.
 777  * All other levels use the sort function.  Error entries remain unsorted.
 778  */
 779 static int
 780 mastercmp(const FTSENT * const *a, const FTSENT * const *b)
 781 {
 782         int a_info, b_info;
 783
 784         a_info = (*a)->fts_info;
 785         if (a_info == FTS_ERR)
 786                 return (0);
 787         b_info = (*b)->fts_info;
 788         if (b_info == FTS_ERR)
 789                 return (0);
 790
 791         if (a_info == FTS_NS || b_info == FTS_NS)
 792                 return (namecmp(*a, *b));
 793
 794         if (a_info != b_info &&
 795             (*a)->fts_level == FTS_ROOTLEVEL && !f_listdir) {
 796                 if (a_info == FTS_D)
 797                         return (1);
 798                 if (b_info == FTS_D)
 799                         return (-1);
 800         }
 801         return (sortfcn(*a, *b));
 802 }