bin/ls/ls.c

   1 /*      $NetBSD: ls.c,v 1.65 2008/09/25 23:44:05 lukem Exp $    */
   2
   3 /*
   4  * Copyright (c) 1989, 1993, 1994
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * This code is derived from software contributed to Berkeley by
   8  * Michael Fischbein.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. Neither the name of the University nor the names of its contributors
  19  *    may be used to endorse or promote products derived from this software
  20  *    without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  */
  34
  35 #include <sys/cdefs.h>
  36 #ifndef lint
  37 __COPYRIGHT("@(#) Copyright (c) 1989, 1993, 1994\
  38  The Regents of the University of California.  All rights reserved.");
  39 #endif /* not lint */
  40
  41 #ifndef lint
  42 #if 0
  43 static char sccsid[] = "@(#)ls.c        8.7 (Berkeley) 8/5/94";
  44 #else
  45 __RCSID("$NetBSD: ls.c,v 1.65 2008/09/25 23:44:05 lukem Exp $");
  46 #endif
  47 #endif /* not lint */
  48
  49 #include <sys/types.h>
  50 #include <sys/stat.h>
  51 #include <sys/ioctl.h>
  52
  53 #include <dirent.h>
  54 #include <err.h>
  55 #include <errno.h>
  56 #include <fts.h>
  57 #include <locale.h>
  58 #include <stdio.h>
  59 #include <stdlib.h>
  60 #include <string.h>
  61 #include <unistd.h>
  62 #include <termios.h>
  63 #include <pwd.h>
  64 #include <grp.h>
  65 #include <util.h>
  66
  67 #include "ls.h"
  68 #include "extern.h"
  69
  70 static void      display(FTSENT *, FTSENT *);
  71 static int       mastercmp(const FTSENT **, const FTSENT **);
  72 static void      traverse(int, char **, int);
  73
  74 static void (*printfcn)(DISPLAY *);
  75 static int (*sortfcn)(const FTSENT *, const FTSENT *);
  76
  77 #define BY_NAME 0
  78 #define BY_SIZE 1
  79 #define BY_TIME 2
  80
  81 long blocksize;                 /* block size units */
  82 int termwidth = 80;             /* default terminal width */
  83 int sortkey = BY_NAME;
  84 int rval = EXIT_SUCCESS;        /* exit value - set if error encountered */
  85
  86 /* flags */
  87 int f_accesstime;               /* use time of last access */
  88 int f_column;                   /* columnated format */
  89 int f_columnacross;             /* columnated format, sorted across */
  90 int f_flags;                    /* show flags associated with a file */
  91 int f_grouponly;                /* long listing without owner */
  92 int f_humanize;                 /* humanize the size field */
  93 int f_inode;                    /* print inode */
  94 int f_listdir;                  /* list actual directory, not contents */
  95 int f_listdot;                  /* list files beginning with . */
  96 int f_longform;                 /* long listing format */
  97 int f_nonprint;                 /* show unprintables as ? */
  98 int f_nosort;                   /* don't sort output */
  99 int f_numericonly;              /* don't convert uid/gid to name */
 100 int f_octal;                    /* print octal escapes for nongraphic characters */
 101 int f_octal_escape;             /* like f_octal but use C escapes if possible */
 102 int f_recursive;                /* ls subdirectories also */
 103 int f_reversesort;              /* reverse whatever sort is used */
 104 int f_sectime;                  /* print the real time for all files */
 105 int f_singlecol;                /* use single column output */
 106 int f_size;                     /* list size in short listing */
 107 int f_statustime;               /* use time of last mode change */
 108 int f_stream;                   /* stream format */
 109 int f_type;                     /* add type character for non-regular files */
 110 int f_typedir;                  /* add type character for directories */
 111 int f_whiteout;                 /* show whiteout entries */
 112
 113 int
 114 ls_main(int argc, char *argv[])
 115 {
 116         static char dot[] = ".", *dotav[] = { dot, NULL };
 117         struct winsize win;
 118         int ch, fts_options;
 119         int kflag = 0;
 120         const char *p;
 121
 122         setprogname(argv[0]);
 123         (void)setlocale(LC_ALL, "");
 124
 125         /* Terminal defaults to -Cq, non-terminal defaults to -1. */
 126         if (isatty(STDOUT_FILENO)) {
 127                 if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &win) == 0 &&
 128                     win.ws_col > 0)
 129                         termwidth = win.ws_col;
 130                 f_column = f_nonprint = 1;
 131         } else
 132                 f_singlecol = 1;
 133
 134         /* Root is -A automatically. */
 135         if (!getuid())
 136                 f_listdot = 1;
 137
 138         fts_options = FTS_PHYSICAL;
 139         while ((ch = getopt(argc, argv, "1ABCFLRSTWabcdfghiklmnopqrstuwx")) != -1) {
 140                 switch (ch) {
 141                 /*
 142                  * The -1, -C, -l, -m and -x options all override each other so
 143                  * shell aliasing works correctly.
 144                  */
 145                 case '1':
 146                         f_singlecol = 1;
 147                         f_column = f_columnacross = f_longform = f_stream = 0;
 148                         break;
 149                 case 'C':
 150                         f_column = 1;
 151                         f_columnacross = f_longform = f_singlecol = f_stream =
 152                             0;
 153                         break;
 154                 case 'g':
 155                         if (f_grouponly != -1)
 156                                 f_grouponly = 1;
 157                         f_longform = 1;
 158                         f_column = f_columnacross = f_singlecol = f_stream = 0;
 159                         break;
 160                 case 'l':
 161                         f_longform = 1;
 162                         f_column = f_columnacross = f_singlecol = f_stream = 0;
 163                         /* Never let -g take precedence over -l. */
 164                         f_grouponly = -1;
 165                         break;
 166                 case 'm':
 167                         f_stream = 1;
 168                         f_column = f_columnacross = f_longform = f_singlecol =
 169                             0;
 170                         break;
 171                 case 'x':
 172                         f_columnacross = 1;
 173                         f_column = f_longform = f_singlecol = f_stream = 0;
 174                         break;
 175                 /* The -c and -u options override each other. */
 176                 case 'c':
 177                         f_statustime = 1;
 178                         f_accesstime = 0;
 179                         break;
 180                 case 'u':
 181                         f_accesstime = 1;
 182                         f_statustime = 0;
 183                         break;
 184                 case 'F':
 185                         f_type = 1;
 186                         break;
 187                 case 'L':
 188                         fts_options &= ~FTS_PHYSICAL;
 189                         fts_options |= FTS_LOGICAL;
 190                         break;
 191                 case 'R':
 192                         f_recursive = 1;
 193                         break;
 194                 case 'a':
 195                         fts_options |= FTS_SEEDOT;
 196                         /* FALLTHROUGH */
 197                 case 'A':
 198                         f_listdot = 1;
 199                         break;
 200                 /* The -B option turns off the -b, -q and -w options. */
 201                 case 'B':
 202                         f_nonprint = 0;
 203                         f_octal = 1;
 204                         f_octal_escape = 0;
 205                         break;
 206                 /* The -b option turns off the -B, -q and -w options. */
 207                 case 'b':
 208                         f_nonprint = 0;
 209                         f_octal = 0;
 210                         f_octal_escape = 1;
 211                         break;
 212                 /* The -d option turns off the -R option. */
 213                 case 'd':
 214                         f_listdir = 1;
 215                         f_recursive = 0;
 216                         break;
 217                 case 'f':
 218                         f_nosort = 1;
 219                         break;
 220                 case 'i':
 221                         f_inode = 1;
 222                         break;
 223                 case 'k':
 224                         blocksize = 1024;
 225                         kflag = 1;
 226                         f_humanize = 0;
 227                         break;
 228                 /* The -h option forces all sizes to be measured in bytes. */
 229                 case 'h':
 230                         f_humanize = 1;
 231                         kflag = 0;
 232                         break;
 233                 case 'n':
 234                         f_numericonly = 1;
 235                         f_longform = 1;
 236                         f_column = f_columnacross = f_singlecol = f_stream = 0;
 237                         break;
 238                 case 'o':
 239                         f_flags = 1;
 240                         break;
 241                 case 'p':
 242                         f_typedir = 1;
 243                         break;
 244                 /* The -q option turns off the -B, -b and -w options. */
 245                 case 'q':
 246                         f_nonprint = 1;
 247                         f_octal = 0;
 248                         f_octal_escape = 0;
 249                         break;
 250                 case 'r':
 251                         f_reversesort = 1;
 252                         break;
 253                 case 'S':
 254                         sortkey = BY_SIZE;
 255                         break;
 256                 case 's':
 257                         f_size = 1;
 258                         break;
 259                 case 'T':
 260                         f_sectime = 1;
 261                         break;
 262                 case 't':
 263                         sortkey = BY_TIME;
 264                         break;
 265                 case 'W':
 266                         f_whiteout = 1;
 267                         break;
 268                 /* The -w option turns off the -B, -b and -q options. */
 269                 case 'w':
 270                         f_nonprint = 0;
 271                         f_octal = 0;
 272                         f_octal_escape = 0;
 273                         break;
 274                 default:
 275                 case '?':
 276                         usage();
 277                 }
 278         }
 279         argc -= optind;
 280         argv += optind;
 281
 282         if (f_column || f_columnacross || f_stream) {
 283                 if ((p = getenv("COLUMNS")) != NULL)
 284                         termwidth = atoi(p);
 285         }
 286
 287         /*
 288          * If both -g and -l options, let -l take precedence.
 289          */
 290         if (f_grouponly == -1)
 291                 f_grouponly = 0;
 292
 293         /*
 294          * If not -F, -i, -l, -p, -S, -s or -t options, don't require stat
 295          * information.
 296          */
 297         if (!f_inode && !f_longform && !f_size && !f_type && !f_typedir &&
 298             sortkey == BY_NAME)
 299                 fts_options |= FTS_NOSTAT;
 300
 301         /*
 302          * If not -F, -d or -l options, follow any symbolic links listed on
 303          * the command line.
 304          */
 305         if (!f_longform && !f_listdir && !f_type)
 306                 fts_options |= FTS_COMFOLLOW;
 307
 308         /*
 309          * If -W, show whiteout entries
 310          */
 311 #ifdef FTS_WHITEOUT
 312         if (f_whiteout)
 313                 fts_options |= FTS_WHITEOUT;
 314 #endif
 315
 316         /* If -l or -s, figure out block size. */
 317         if (f_inode || f_longform || f_size) {
 318                 if (!kflag)
 319                         (void)getbsize(NULL, &blocksize);
 320                 blocksize /= 512;
 321         }
 322
 323         /* Select a sort function. */
 324         if (f_reversesort) {
 325                 switch (sortkey) {
 326                 case BY_NAME:
 327                         sortfcn = revnamecmp;
 328                         break;
 329                 case BY_SIZE:
 330                         sortfcn = revsizecmp;
 331                         break;
 332                 case BY_TIME:
 333                         if (f_accesstime)
 334                                 sortfcn = revacccmp;
 335                         else if (f_statustime)
 336                                 sortfcn = revstatcmp;
 337                         else /* Use modification time. */
 338                                 sortfcn = revmodcmp;
 339                         break;
 340                 }
 341         } else {
 342                 switch (sortkey) {
 343                 case BY_NAME:
 344                         sortfcn = namecmp;
 345                         break;
 346                 case BY_SIZE:
 347                         sortfcn = sizecmp;
 348                         break;
 349                 case BY_TIME:
 350                         if (f_accesstime)
 351                                 sortfcn = acccmp;
 352                         else if (f_statustime)
 353                                 sortfcn = statcmp;
 354                         else /* Use modification time. */
 355                                 sortfcn = modcmp;
 356                         break;
 357                 }
 358         }
 359
 360         /* Select a print function. */
 361         if (f_singlecol)
 362                 printfcn = printscol;
 363         else if (f_columnacross)
 364                 printfcn = printacol;
 365         else if (f_longform)
 366                 printfcn = printlong;
 367         else if (f_stream)
 368                 printfcn = printstream;
 369         else
 370                 printfcn = printcol;
 371
 372         if (argc)
 373                 traverse(argc, argv, fts_options);
 374         else
 375                 traverse(1, dotav, fts_options);
 376         return rval;
 377         /* NOTREACHED */
 378 }
 379
 380 static int output;                      /* If anything output. */
 381
 382 /*
 383  * Traverse() walks the logical directory structure specified by the argv list
 384  * in the order specified by the mastercmp() comparison function.  During the
 385  * traversal it passes linked lists of structures to display() which represent
 386  * a superset (may be exact set) of the files to be displayed.
 387  */
 388 static void
 389 traverse(int argc, char *argv[], int options)
 390 {
 391         FTS *ftsp;
 392         FTSENT *p, *chp;
 393         int ch_options, error;
 394
 395         if ((ftsp =
 396             fts_open(argv, options, f_nosort ? NULL : mastercmp)) == NULL)
 397                 err(EXIT_FAILURE, NULL);
 398
 399         display(NULL, fts_children(ftsp, 0));
 400         if (f_listdir) {
 401                 (void)fts_close(ftsp);
 402                 return;
 403         }
 404
 405         /*
 406          * If not recursing down this tree and don't need stat info, just get
 407          * the names.
 408          */
 409         ch_options = !f_recursive && options & FTS_NOSTAT ? FTS_NAMEONLY : 0;
 410
 411         while ((p = fts_read(ftsp)) != NULL)
 412                 switch (p->fts_info) {
 413                 case FTS_DC:
 414                         warnx("%s: directory causes a cycle", p->fts_name);
 415                         break;
 416                 case FTS_DNR:
 417                 case FTS_ERR:
 418                         warnx("%s: %s", p->fts_name, strerror(p->fts_errno));
 419                         rval = EXIT_FAILURE;
 420                         break;
 421                 case FTS_D:
 422                         if (p->fts_level != FTS_ROOTLEVEL &&
 423                             p->fts_name[0] == '.' && !f_listdot)
 424                                 break;
 425
 426                         /*
 427                          * If already output something, put out a newline as
 428                          * a separator.  If multiple arguments, precede each
 429                          * directory with its name.
 430                          */
 431                         if (output)
 432                                 (void)printf("\n%s:\n", p->fts_path);
 433                         else if (argc > 1) {
 434                                 (void)printf("%s:\n", p->fts_path);
 435                                 output = 1;
 436                         }
 437
 438                         chp = fts_children(ftsp, ch_options);
 439                         display(p, chp);
 440
 441                         if (!f_recursive && chp != NULL)
 442                                 (void)fts_set(ftsp, p, FTS_SKIP);
 443                         break;
 444                 }
 445         error = errno;
 446         (void)fts_close(ftsp);
 447         errno = error;
 448         if (errno)
 449                 err(EXIT_FAILURE, "fts_read");
 450 }
 451
 452 /*
 453  * Display() takes a linked list of FTSENT structures and passes the list
 454  * along with any other necessary information to the print function.  P
 455  * points to the parent directory of the display list.
 456  */
 457 static void
 458 display(FTSENT *p, FTSENT *list)
 459 {
 460         struct stat *sp;
 461         DISPLAY d;
 462         FTSENT *cur;
 463         NAMES *np;
 464         u_int64_t btotal, stotal;
 465         off_t maxsize;
 466         blkcnt_t maxblock;
 467         ino_t maxinode;
 468         int maxmajor, maxminor;
 469         uint32_t maxnlink;
 470         int bcfile, entries, flen, glen, ulen, maxflags, maxgroup;
 471         unsigned int maxlen;
 472         int maxuser, needstats;
 473         const char *user, *group;
 474         char buf[21];           /* 64 bits == 20 digits, +1 for NUL */
 475         char nuser[12], ngroup[12];
 476         char *flags = NULL;
 477
 478         /*
 479          * If list is NULL there are two possibilities: that the parent
 480          * directory p has no children, or that fts_children() returned an
 481          * error.  We ignore the error case since it will be replicated
 482          * on the next call to fts_read() on the post-order visit to the
 483          * directory p, and will be signalled in traverse().
 484          */
 485         if (list == NULL)
 486                 return;
 487
 488         needstats = f_inode || f_longform || f_size;
 489         flen = 0;
 490         maxinode = maxnlink = 0;
 491         bcfile = 0;
 492         maxuser = maxgroup = maxflags = maxlen = 0;
 493         btotal = stotal = maxblock = maxsize = 0;
 494         maxmajor = maxminor = 0;
 495         for (cur = list, entries = 0; cur; cur = cur->fts_link) {
 496                 if (cur->fts_info == FTS_ERR || cur->fts_info == FTS_NS) {
 497                         warnx("%s: %s",
 498                             cur->fts_name, strerror(cur->fts_errno));
 499                         cur->fts_number = NO_PRINT;
 500                         rval = EXIT_FAILURE;
 501                         continue;
 502                 }
 503
 504                 /*
 505                  * P is NULL if list is the argv list, to which different rules
 506                  * apply.
 507                  */
 508                 if (p == NULL) {
 509                         /* Directories will be displayed later. */
 510                         if (cur->fts_info == FTS_D && !f_listdir) {
 511                                 cur->fts_number = NO_PRINT;
 512                                 continue;
 513                         }
 514                 } else {
 515                         /* Only display dot file if -a/-A set. */
 516                         if (cur->fts_name[0] == '.' && !f_listdot) {
 517                                 cur->fts_number = NO_PRINT;
 518                                 continue;
 519                         }
 520                 }
 521                 if (cur->fts_namelen > maxlen)
 522                         maxlen = cur->fts_namelen;
 523                 if (needstats) {
 524                         sp = cur->fts_statp;
 525                         if (sp->st_blocks > maxblock)
 526                                 maxblock = sp->st_blocks;
 527                         if (sp->st_ino > maxinode)
 528                                 maxinode = sp->st_ino;
 529                         if (sp->st_nlink > maxnlink)
 530                                 maxnlink = sp->st_nlink;
 531                         if (sp->st_size > maxsize)
 532                                 maxsize = sp->st_size;
 533                         if (S_ISCHR(sp->st_mode) || S_ISBLK(sp->st_mode)) {
 534                                 bcfile = 1;
 535                                 if (major(sp->st_rdev) > maxmajor)
 536                                         maxmajor = major(sp->st_rdev);
 537                                 if (minor(sp->st_rdev) > maxminor)
 538                                         maxminor = minor(sp->st_rdev);
 539                         }
 540
 541                         btotal += sp->st_blocks;
 542                         stotal += sp->st_size;
 543                         if (f_longform) {
 544                                 if (f_numericonly ||
 545                                     (user = user_from_uid(sp->st_uid, 0)) ==
 546                                     NULL) {
 547                                         (void)snprintf(nuser, sizeof(nuser),
 548                                             "%u", sp->st_uid);
 549                                         user = nuser;
 550                                 }
 551                                 if (f_numericonly ||
 552                                     (group = group_from_gid(sp->st_gid, 0)) ==
 553                                     NULL) {
 554                                         (void)snprintf(ngroup, sizeof(ngroup),
 555                                             "%u", sp->st_gid);
 556                                         group = ngroup;
 557                                 }
 558                                 if ((ulen = strlen(user)) > maxuser)
 559                                         maxuser = ulen;
 560                                 if ((glen = strlen(group)) > maxgroup)
 561                                         maxgroup = glen;
 562                                 if (f_flags) {
 563                                         flags =
 564                                             flags_to_string((u_long)sp->st_flags, "-");
 565                                         if ((flen = strlen(flags)) > maxflags)
 566                                                 maxflags = flen;
 567                                 } else
 568                                         flen = 0;
 569
 570                                 if ((np = malloc(sizeof(NAMES) +
 571                                     ulen + glen + flen + 2)) == NULL)
 572                                         err(EXIT_FAILURE, NULL);
 573
 574                                 np->user = &np->data[0];
 575                                 (void)strcpy(np->user, user);
 576                                 np->group = &np->data[ulen + 1];
 577                                 (void)strcpy(np->group, group);
 578
 579                                 if (f_flags) {
 580                                         np->flags = &np->data[ulen + glen + 2];
 581                                         (void)strcpy(np->flags, flags);
 582                                         free(flags);
 583                                 }
 584                                 cur->fts_pointer = np;
 585                         }
 586                 }
 587                 ++entries;
 588         }
 589
 590         if (!entries)
 591                 return;
 592
 593         d.list = list;
 594         d.entries = entries;
 595         d.maxlen = maxlen;
 596         if (needstats) {
 597                 d.btotal = btotal;
 598                 d.stotal = stotal;
 599                 if (f_humanize) {
 600                         d.s_block = 4; /* min buf length for humanize_number */
 601                 } else {
 602                         (void)snprintf(buf, sizeof(buf), "%llu",
 603                             (long long)howmany(maxblock, blocksize));
 604                         d.s_block = strlen(buf);
 605                 }
 606                 d.s_flags = maxflags;
 607                 d.s_group = maxgroup;
 608                 (void)snprintf(buf, sizeof(buf), "%llu",
 609                     (unsigned long long)maxinode);
 610                 d.s_inode = strlen(buf);
 611                 (void)snprintf(buf, sizeof(buf), "%u", maxnlink);
 612                 d.s_nlink = strlen(buf);
 613                 if (f_humanize) {
 614                         d.s_size = 4; /* min buf length for humanize_number */
 615                 } else {
 616                         (void)snprintf(buf, sizeof(buf), "%llu",
 617                             (long long)maxsize);
 618                         d.s_size = strlen(buf);
 619                 }
 620                 d.s_user = maxuser;
 621                 if (bcfile) {
 622                         (void)snprintf(buf, sizeof(buf), "%u", maxmajor);
 623                         d.s_major = strlen(buf);
 624                         (void)snprintf(buf, sizeof(buf), "%u", maxminor);
 625                         d.s_minor = strlen(buf);
 626                         if (d.s_major + d.s_minor + 2 > d.s_size)
 627                                 d.s_size = d.s_major + d.s_minor + 2;
 628                         else if (d.s_size - d.s_minor - 2 > d.s_major)
 629                                 d.s_major = d.s_size - d.s_minor - 2;
 630                 } else {
 631                         d.s_major = 0;
 632                         d.s_minor = 0;
 633                 }
 634         }
 635
 636         printfcn(&d);
 637         output = 1;
 638
 639         if (f_longform)
 640                 for (cur = list; cur; cur = cur->fts_link)
 641                         free(cur->fts_pointer);
 642 }
 643
 644 /*
 645  * Ordering for mastercmp:
 646  * If ordering the argv (fts_level = FTS_ROOTLEVEL) return non-directories
 647  * as larger than directories.  Within either group, use the sort function.
 648  * All other levels use the sort function.  Error entries remain unsorted.
 649  */
 650 static int
 651 mastercmp(const FTSENT **a, const FTSENT **b)
 652 {
 653         int a_info, b_info;
 654
 655         a_info = (*a)->fts_info;
 656         if (a_info == FTS_ERR)
 657                 return (0);
 658         b_info = (*b)->fts_info;
 659         if (b_info == FTS_ERR)
 660                 return (0);
 661
 662         if (a_info == FTS_NS || b_info == FTS_NS) {
 663                 if (b_info != FTS_NS)
 664                         return (1);
 665                 else if (a_info != FTS_NS)
 666                         return (-1);
 667                 else
 668                         return (namecmp(*a, *b));
 669         }
 670
 671         if (a_info != b_info && !f_listdir &&
 672             (*a)->fts_level == FTS_ROOTLEVEL) {
 673                 if (a_info == FTS_D)
 674                         return (1);
 675                 else if (b_info == FTS_D)
 676                         return (-1);
 677         }
 678         return (sortfcn(*a, *b));
 679 }