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  * 4. 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  * $DragonFly: src/bin/ls/ls.c,v 1.17 2008/01/19 15:33:42 matthias Exp $
  36  */
  37
  38 #include <sys/types.h>
  39 #include <sys/stat.h>
  40 #include <sys/ioctl.h>
  41
  42 #include <dirent.h>
  43 #include <err.h>
  44 #include <errno.h>
  45 #include <fts.h>
  46 #include <grp.h>
  47 #include <inttypes.h>
  48 #include <limits.h>
  49 #include <locale.h>
  50 #include <pwd.h>
  51 #include <stdio.h>
  52 #include <stdlib.h>
  53 #include <string.h>
  54 #include <unistd.h>
  55 #ifdef COLORLS
  56 #include <termcap.h>
  57 #include <signal.h>
  58 #endif
  59
  60 #include "ls.h"
  61 #include "extern.h"
  62
  63 /*
  64  * Upward approximation of the maximum number of characters needed to
  65  * represent a value of integral type t as a string, excluding the
  66  * NUL terminator, with provision for a sign.
  67  */
  68 #define STRBUF_SIZEOF(t)        (1 + CHAR_BIT * sizeof(t) / 3 + 1)
  69
  70 /*
  71  * MAKENINES(n) turns n into (10**n)-1.  This is useful for converting a width
  72  * into a number that wide in decimal.
  73  * XXX: Overflows are not considered.
  74  */
  75 #define MAKENINES(n)                                                    \
  76         do {                                                            \
  77                 intmax_t i;                                             \
  78                                                                         \
  79                 /* Use a loop as all values of n are small. */          \
  80                 for (i = 1; n > 0; i *= 10)                             \
  81                         n--;                                            \
  82                 n = i - 1;                                              \
  83         } while(0)
  84
  85 static void      display(const FTSENT *, FTSENT *);
  86 static int       mastercmp(const FTSENT * const *, const FTSENT * const *);
  87 static void      traverse(int, char **, int);
  88
  89 static void (*printfcn)(const DISPLAY *);
  90 static int (*sortfcn)(const FTSENT *, const FTSENT *);
  91
  92 long blocksize;                 /* block size units */
  93 int termwidth = 80;             /* default terminal width */
  94
  95 /* flags */
  96        int f_accesstime;        /* use time of last access */
  97        int f_flags;             /* show flags associated with a file */
  98        int f_fsmid;             /* show FSMID associated with a file */
  99        int f_humanval;          /* show human-readable file sizes */
 100        int f_inode;             /* print inode */
 101 static int f_kblocks;           /* print size in kilobytes */
 102 static int f_listdir;           /* list actual directory, not contents */
 103 static int f_listdot;           /* list files beginning with . */
 104        int f_longform;          /* long listing format */
 105        int f_nonprint;          /* show unprintables as ? */
 106 static int f_nosort;            /* don't sort output */
 107        int f_notabs;            /* don't use tab-separated multi-col output */
 108 static int f_numericonly;       /* don't convert uid/gid to name */
 109        int f_octal;             /* show unprintables as \xxx */
 110        int f_octal_escape;      /* like f_octal but use C escapes if possible */
 111 static int f_recursive;         /* ls subdirectories also */
 112 static int f_reversesort;       /* reverse whatever sort is used */
 113        int f_sectime;           /* print the real time for all files */
 114 static int f_singlecol;         /* use single column output */
 115        int f_size;              /* list size in short listing */
 116        int f_slash;             /* similar to f_type, but only for dirs */
 117        int f_sortsize;          /* Sort by size */
 118        int f_sortacross;        /* sort across rows, not down columns */
 119        int f_statustime;        /* use time of last mode change */
 120 static int f_stream;            /* stream the output, separate with commas */
 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 #ifdef COLORLS
 144         char termcapbuf[1024];  /* termcap definition buffer */
 145         char tcapbuf[512];      /* capability buffer */
 146         char *bp = tcapbuf;
 147 #endif
 148
 149         setlocale(LC_ALL, "");
 150
 151         /* Terminal defaults to -Cq, non-terminal defaults to -1. */
 152         if (isatty(STDOUT_FILENO)) {
 153                 termwidth = 80;
 154                 if ((p = getenv("COLUMNS")) != NULL && *p != '\0')
 155                         termwidth = atoi(p);
 156                 else if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &win) != -1 &&
 157                     win.ws_col > 0)
 158                         termwidth = win.ws_col;
 159                 f_nonprint = 1;
 160         } else {
 161                 f_singlecol = 1;
 162                 /* retrieve environment variable, in case of explicit -C */
 163                 p = getenv("COLUMNS");
 164                 if (p)
 165                         termwidth = atoi(p);
 166         }
 167
 168         /* Root is -A automatically. */
 169         if (!getuid())
 170                 f_listdot = 1;
 171
 172         fts_options = FTS_PHYSICAL;
 173         while ((ch = getopt(argc, argv, "1ABCFGHLPSRTWabcdfghiklmnopqrstuwxy"))
 174             != -1) {
 175                 switch (ch) {
 176                 /*
 177                  * The -1, -C, -x and -l options all override each other so
 178                  * shell aliasing works right.
 179                  */
 180                 case '1':
 181                         f_singlecol = 1;
 182                         f_longform = 0;
 183                         f_stream = 0;
 184                         break;
 185                 case 'B':
 186                         f_nonprint = 0;
 187                         f_octal = 1;
 188                         f_octal_escape = 0;
 189                         break;
 190                 case 'C':
 191                         f_sortacross = f_longform = f_singlecol = 0;
 192                         break;
 193                 case 'l':
 194                         f_longform = 1;
 195                         f_singlecol = 0;
 196                         f_stream = 0;
 197                         break;
 198                 case 'x':
 199                         f_sortacross = 1;
 200                         f_longform = 0;
 201                         f_singlecol = 0;
 202                         break;
 203                 case 'y':
 204 #ifdef _ST_FSMID_PRESENT_
 205                         f_fsmid = 1;
 206 #endif
 207                         break;
 208                 /* The -c and -u options override each other. */
 209                 case 'c':
 210                         f_statustime = 1;
 211                         f_accesstime = 0;
 212                         break;
 213                 case 'u':
 214                         f_accesstime = 1;
 215                         f_statustime = 0;
 216                         break;
 217                 case 'F':
 218                         f_type = 1;
 219                         f_slash = 0;
 220                         break;
 221                 case 'H':
 222                         fts_options |= FTS_COMFOLLOW;
 223                         break;
 224                 case 'G':
 225                         if (setenv("CLICOLOR", "", 1) != 0)
 226                                 warn("setenv: cannot set CLICOLOR");
 227                         break;
 228                 case 'L':
 229                         fts_options &= ~FTS_PHYSICAL;
 230                         fts_options |= FTS_LOGICAL;
 231                         break;
 232                 case 'P':
 233                         fts_options &= ~FTS_COMFOLLOW;
 234                         fts_options &= ~FTS_LOGICAL;
 235                         fts_options |= FTS_PHYSICAL;
 236                         break;
 237                 case 'R':
 238                         f_recursive = 1;
 239                         break;
 240                 case 'S':
 241                         f_sortsize = 1;
 242                         break;
 243                 case 'a':
 244                         fts_options |= FTS_SEEDOT;
 245                         /* FALLTHROUGH */
 246                 case 'A':
 247                         f_listdot = 1;
 248                         break;
 249                 /* The -d option turns off the -R option. */
 250                 case 'd':
 251                         f_listdir = 1;
 252                         f_recursive = 0;
 253                         break;
 254                 case 'f':
 255                         f_nosort = 1;
 256                         break;
 257                 case 'g':       /* Compatibility with 4.3BSD. */
 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_humanval = 0;
 267                         f_kblocks = 1;
 268                         break;
 269                 case 'm':
 270                         f_stream = 1;
 271                         f_singlecol = 0;
 272                         f_longform = 0;
 273                         break;
 274                 case 'n':
 275                         f_numericonly = 1;
 276                         break;
 277                 case 'o':
 278                         f_flags = 1;
 279                         break;
 280                 case 'p':
 281                         f_slash = 1;
 282                         f_type = 1;
 283                         break;
 284                 case 'q':
 285                         f_nonprint = 1;
 286                         f_octal = 0;
 287                         f_octal_escape = 0;
 288                         break;
 289                 case 'r':
 290                         f_reversesort = 1;
 291                         break;
 292                 case 's':
 293                         f_size = 1;
 294                         break;
 295                 case 'T':
 296                         f_sectime = 1;
 297                         break;
 298                 case 't':
 299                         f_timesort = 1;
 300                         break;
 301                 case 'W':
 302                         f_whiteout = 1;
 303                         break;
 304                 case 'b':
 305                         f_nonprint = 0;
 306                         f_octal = 0;
 307                         f_octal_escape = 1;
 308                         break;
 309                 case 'w':
 310                         f_nonprint = 0;
 311                         f_octal = 0;
 312                         f_octal_escape = 0;
 313                         break;
 314                 default:
 315                 case '?':
 316                         usage();
 317                 }
 318         }
 319         argc -= optind;
 320         argv += optind;
 321
 322         /* Enabling of colours is conditional on the environment. */
 323         if (getenv("CLICOLOR") &&
 324             (isatty(STDOUT_FILENO) || getenv("CLICOLOR_FORCE")))
 325 #ifdef COLORLS
 326                 if (tgetent(termcapbuf, getenv("TERM")) == 1) {
 327                         ansi_fgcol = tgetstr("AF", &bp);
 328                         ansi_bgcol = tgetstr("AB", &bp);
 329                         attrs_off = tgetstr("me", &bp);
 330                         enter_bold = tgetstr("md", &bp);
 331
 332                         /* To switch colours off use 'op' if
 333                          * available, otherwise use 'oc', or
 334                          * don't do colours at all. */
 335                         ansi_coloff = tgetstr("op", &bp);
 336                         if (!ansi_coloff)
 337                                 ansi_coloff = tgetstr("oc", &bp);
 338                         if (ansi_fgcol && ansi_bgcol && ansi_coloff)
 339                                 f_color = 1;
 340                 }
 341 #else
 342                 fprintf(stderr, "Color support not compiled in.\n");
 343 #endif /*COLORLS*/
 344
 345 #ifdef COLORLS
 346         if (f_color) {
 347                 /*
 348                  * We can't put tabs and color sequences together:
 349                  * column number will be incremented incorrectly
 350                  * for "stty oxtabs" mode.
 351                  */
 352                 f_notabs = 1;
 353                 signal(SIGINT, colorquit);
 354                 signal(SIGQUIT, colorquit);
 355                 parsecolors(getenv("LSCOLORS"));
 356         }
 357 #endif
 358
 359         /*
 360          * If not -F, -i, -l, -s, -S  or -t options, don't require stat
 361          * information, unless in color mode in which case we do
 362          * need this to determine which colors to display.
 363          */
 364         if (!f_inode && !f_longform && !f_size && !f_sortsize && !f_timesort
 365             && !f_type
 366 #ifdef COLORLS
 367             && !f_color
 368 #endif
 369             )
 370                 fts_options |= FTS_NOSTAT;
 371
 372         /*
 373          * If not -F, -d or -l options, follow any symbolic links listed on
 374          * the command line.
 375          */
 376         if (!f_longform && !f_listdir && !f_type)
 377                 fts_options |= FTS_COMFOLLOW;
 378
 379         /*
 380          * If -W, show whiteout entries
 381          */
 382 #ifdef FTS_WHITEOUT
 383         if (f_whiteout)
 384                 fts_options |= FTS_WHITEOUT;
 385 #endif
 386
 387         /* If -l or -s, figure out block size. */
 388         if (f_longform || f_size) {
 389                 if (f_kblocks)
 390                         blocksize = 2;
 391                 else {
 392                         getbsize(&notused, &blocksize);
 393                         blocksize /= 512;
 394                 }
 395         }
 396         /* Select a sort function. */
 397         if (f_reversesort) {
 398                 if (!f_timesort)
 399                         sortfcn = revnamecmp;
 400                 else if (f_accesstime)
 401                         sortfcn = revacccmp;
 402                 else if (f_sortsize)
 403                         sortfcn = revsizecmp;
 404                 else if (f_statustime)
 405                         sortfcn = revstatcmp;
 406                 else            /* Use modification time. */
 407                         sortfcn = revmodcmp;
 408         } else {
 409                 if (!f_timesort)
 410                         sortfcn = namecmp;
 411                 else if (f_accesstime)
 412                         sortfcn = acccmp;
 413                 else if (f_sortsize)
 414                         sortfcn = sizecmp;
 415                 else if (f_statustime)
 416                         sortfcn = statcmp;
 417                 else            /* Use modification time. */
 418                         sortfcn = modcmp;
 419         }
 420
 421         /* Select a print function. */
 422         if (f_singlecol)
 423                 printfcn = printscol;
 424         else if (f_longform)
 425                 printfcn = printlong;
 426         else if (f_stream)
 427                 printfcn = printstream;
 428         else
 429                 printfcn = printcol;
 430
 431         if (argc)
 432                 traverse(argc, argv, fts_options);
 433         else
 434                 traverse(1, dotav, fts_options);
 435         exit(rval);
 436 }
 437
 438 static int output;              /* If anything output. */
 439
 440 /*
 441  * Traverse() walks the logical directory structure specified by the argv list
 442  * in the order specified by the mastercmp() comparison function.  During the
 443  * traversal it passes linked lists of structures to display() which represent
 444  * a superset (may be exact set) of the files to be displayed.
 445  */
 446 static void
 447 traverse(int argc, char *argv[], int options)
 448 {
 449         FTS *ftsp;
 450         FTSENT *p, *chp;
 451         int ch_options, error;
 452
 453         if ((ftsp =
 454             fts_open(argv, options, f_nosort ? NULL : mastercmp)) == NULL)
 455                 err(1, "fts_open");
 456
 457         /*
 458          * We ignore errors from fts_children here since they will be
 459          * replicated and signalled on the next call to fts_read() below.
 460          */
 461         chp = fts_children(ftsp, 0);
 462         if (chp != NULL)
 463                 display(NULL, chp);
 464         if (f_listdir) {
 465                 fts_close(ftsp);
 466                 return;
 467         }
 468
 469         /*
 470          * If not recursing down this tree and don't need stat info, just get
 471          * the names.
 472          */
 473         ch_options = !f_recursive && options & FTS_NOSTAT ? FTS_NAMEONLY : 0;
 474
 475         while ((p = fts_read(ftsp)) != NULL)
 476                 switch (p->fts_info) {
 477                 case FTS_DC:
 478                         warnx("%s: directory causes a cycle", p->fts_name);
 479                         break;
 480                 case FTS_DNR:
 481                 case FTS_ERR:
 482                         warnx("%s: %s", p->fts_name, strerror(p->fts_errno));
 483                         rval = 1;
 484                         break;
 485                 case FTS_D:
 486                         if (p->fts_level != FTS_ROOTLEVEL &&
 487                             p->fts_name[0] == '.' && !f_listdot)
 488                                 break;
 489
 490                         /*
 491                          * If already output something, put out a newline as
 492                          * a separator.  If multiple arguments, precede each
 493                          * directory with its name.
 494                          */
 495                         if (output) {
 496                                 putchar('\n');
 497                                 printname(p->fts_path);
 498                                 puts(":");
 499                         } else if (argc > 1) {
 500                                 printname(p->fts_path);
 501                                 puts(":");
 502                                 output = 1;
 503                         }
 504                         chp = fts_children(ftsp, ch_options);
 505                         display(p, chp);
 506
 507                         if (!f_recursive && chp != NULL)
 508                                 fts_set(ftsp, p, FTS_SKIP);
 509                         break;
 510                 default:
 511                         break;
 512                 }
 513         error = errno;
 514         fts_close(ftsp);
 515         errno = error;
 516         if (errno)
 517                 err(1, "fts_read");
 518 }
 519
 520 /*
 521  * Display() takes a linked list of FTSENT structures and passes the list
 522  * along with any other necessary information to the print function.  P
 523  * points to the parent directory of the display list.
 524  */
 525 static void
 526 display(const FTSENT *p, FTSENT *list)
 527 {
 528         struct stat *sp;
 529         DISPLAY d;
 530         FTSENT *cur;
 531         NAMES *np;
 532         off_t maxsize;
 533         u_long btotal, maxlen;
 534         int64_t maxblock;
 535         ino_t maxinode;
 536         nlink_t maxnlink;
 537         int bcfile, maxflags;
 538         gid_t maxgroup;
 539         uid_t maxuser;
 540         size_t fsmidlen, flen, ulen, glen;
 541         char *initmax;
 542         int entries, needstats;
 543         const char *user, *group;
 544         char *flags;
 545         int64_t fsmid;
 546         char buf[STRBUF_SIZEOF(u_quad_t) + 1];
 547         char ngroup[STRBUF_SIZEOF(uid_t) + 1];
 548         char nuser[STRBUF_SIZEOF(gid_t) + 1];
 549
 550         needstats = f_inode || f_longform || f_size;
 551         flen = 0;
 552         btotal = 0;
 553         initmax = getenv("LS_COLWIDTHS");
 554         /* Fields match -lios order.  New ones should be added at the end. */
 555         maxblock = maxinode = maxlen = maxnlink =
 556             maxuser = maxgroup = maxflags = maxsize = 0;
 557         if (initmax != NULL && *initmax != '\0') {
 558                 char *initmax2, *jinitmax;
 559                 int ninitmax;
 560
 561                 /* Fill-in "::" as "0:0:0" for the sake of scanf. */
 562                 jinitmax = malloc(strlen(initmax) * 2 + 2);
 563                 if (jinitmax == NULL)
 564                         err(1, "malloc");
 565                 initmax2 = jinitmax;
 566                 if (*initmax == ':')
 567                         strcpy(initmax2, "0:"), initmax2 += 2;
 568                 else
 569                         *initmax2++ = *initmax, *initmax2 = '\0';
 570                 for (initmax++; *initmax != '\0'; initmax++) {
 571                         if (initmax[-1] == ':' && initmax[0] == ':') {
 572                                 *initmax2++ = '0';
 573                                 *initmax2++ = initmax[0];
 574                                 initmax2[1] = '\0';
 575                         } else {
 576                                 *initmax2++ = initmax[0];
 577                                 initmax2[1] = '\0';
 578                         }
 579                 }
 580                 if (initmax2[-1] == ':')
 581                         strcpy(initmax2, "0");
 582
 583                 ninitmax = sscanf(jinitmax,
 584                     " %ju : %jd : %u : %i : %i : %i : %jd : %lu ",
 585                     &maxinode, &maxblock, &maxnlink, &maxuser,
 586                     &maxgroup, &maxflags, &maxsize, &maxlen);
 587                 f_notabs = 1;
 588                 switch (ninitmax) {
 589                 case 0:
 590                         maxinode = 0;
 591                         /* FALLTHROUGH */
 592                 case 1:
 593                         maxblock = 0;
 594                         /* FALLTHROUGH */
 595                 case 2:
 596                         maxnlink = 0;
 597                         /* FALLTHROUGH */
 598                 case 3:
 599                         maxuser = 0;
 600                         /* FALLTHROUGH */
 601                 case 4:
 602                         maxgroup = 0;
 603                         /* FALLTHROUGH */
 604                 case 5:
 605                         maxflags = 0;
 606                         /* FALLTHROUGH */
 607                 case 6:
 608                         maxsize = 0;
 609                         /* FALLTHROUGH */
 610                 case 7:
 611                         maxlen = 0;
 612                         /* FALLTHROUGH */
 613 #ifdef COLORLS
 614                         if (!f_color)
 615 #endif
 616                                 f_notabs = 0;
 617                         /* FALLTHROUGH */
 618                 default:
 619                         break;
 620                 }
 621                 MAKENINES(maxinode);
 622                 MAKENINES(maxblock);
 623                 MAKENINES(maxnlink);
 624                 MAKENINES(maxsize);
 625                 free(jinitmax);
 626         }
 627         bcfile = 0;
 628         flags = NULL;
 629         for (cur = list, entries = 0; cur; cur = cur->fts_link) {
 630                 if (cur->fts_info == FTS_ERR || cur->fts_info == FTS_NS) {
 631                         warnx("%s: %s",
 632                             cur->fts_name, strerror(cur->fts_errno));
 633                         cur->fts_number = NO_PRINT;
 634                         rval = 1;
 635                         continue;
 636                 }
 637                 /*
 638                  * P is NULL if list is the argv list, to which different rules
 639                  * apply.
 640                  */
 641                 if (p == NULL) {
 642                         /* Directories will be displayed later. */
 643                         if (cur->fts_info == FTS_D && !f_listdir) {
 644                                 cur->fts_number = NO_PRINT;
 645                                 continue;
 646                         }
 647                 } else {
 648                         /* Only display dot file if -a/-A set. */
 649                         if (cur->fts_name[0] == '.' && !f_listdot) {
 650                                 cur->fts_number = NO_PRINT;
 651                                 continue;
 652                         }
 653                 }
 654                 if (cur->fts_namelen > maxlen)
 655                         maxlen = cur->fts_namelen;
 656                 if (f_octal || f_octal_escape) {
 657                         u_long t = len_octal(cur->fts_name, cur->fts_namelen);
 658
 659                         if (t > maxlen)
 660                                 maxlen = t;
 661                 }
 662                 if (needstats) {
 663                         sp = cur->fts_statp;
 664                         if (sp->st_blocks > maxblock)
 665                                 maxblock = sp->st_blocks;
 666                         if (sp->st_ino > maxinode)
 667                                 maxinode = sp->st_ino;
 668                         if (sp->st_nlink > maxnlink)
 669                                 maxnlink = sp->st_nlink;
 670                         if (sp->st_size > maxsize)
 671                                 maxsize = sp->st_size;
 672
 673                         btotal += sp->st_blocks;
 674                         if (f_longform) {
 675                                 if (f_numericonly) {
 676                                         snprintf(nuser, sizeof(nuser),
 677                                             "%u", sp->st_uid);
 678                                         snprintf(ngroup, sizeof(ngroup),
 679                                             "%u", sp->st_gid);
 680                                         user = nuser;
 681                                         group = ngroup;
 682                                 } else {
 683                                         user = user_from_uid(sp->st_uid, 0);
 684                                         group = group_from_gid(sp->st_gid, 0);
 685                                 }
 686                                 if ((ulen = strlen(user)) > maxuser)
 687                                         maxuser = ulen;
 688                                 if ((glen = strlen(group)) > maxgroup)
 689                                         maxgroup = glen;
 690                                 if (f_flags) {
 691                                         flags = fflagstostr(sp->st_flags);
 692                                         if (flags != NULL && *flags == '\0') {
 693                                                 free(flags);
 694                                                 flags = strdup("-");
 695                                         }
 696                                         if (flags == NULL)
 697                                                 err(1, "flagstostr");
 698                                         flen = strlen(flags);
 699                                         if (flen > (size_t)maxflags)
 700                                                 maxflags = flen;
 701                                 } else {
 702                                         flen = 0;
 703                                 }
 704 #ifdef _ST_FSMID_PRESENT_
 705                                 if (f_fsmid) {
 706                                         fsmid = sp->st_fsmid;
 707                                         fsmidlen = 18;
 708                                 } else {
 709                                         fsmid = 0;
 710                                         fsmidlen = 0;
 711                                 }
 712 #else
 713                                 fsmidlen = 0;
 714 #endif
 715
 716                                 if ((np = malloc(sizeof(NAMES) +
 717                                     ulen + glen + flen + fsmidlen + 4)) == NULL)
 718                                         err(1, "malloc");
 719
 720                                 np->user = &np->data[0];
 721                                 strcpy(np->user, user);
 722                                 np->group = &np->data[ulen + 1];
 723                                 strcpy(np->group, group);
 724
 725                                 if (S_ISCHR(sp->st_mode) ||
 726                                     S_ISBLK(sp->st_mode))
 727                                         bcfile = 1;
 728
 729                                 if (f_flags) {
 730                                         np->flags = &np->data[ulen + glen + 2];
 731                                         strcpy(np->flags, flags);
 732                                         free(flags);
 733                                 }
 734 #ifdef _ST_FSMID_PRESENT_
 735                                 if (f_fsmid) {
 736                                         np->fsmid = np->data + ulen + glen + flen + 3;
 737                                         snprintf(np->fsmid, fsmidlen + 1,
 738                                                  "%016jx", (intmax_t)fsmid);
 739                                 }
 740 #endif
 741                                 cur->fts_pointer = np;
 742                         }
 743                 }
 744                 ++entries;
 745         }
 746
 747         /*
 748          * If there are no entries to display, we normally stop right
 749          * here.  However, we must continue if we have to display the
 750          * total block count.  In this case, we display the total only
 751          * on the second (p != NULL) pass.
 752          */
 753         if (!entries && (!(f_longform || f_size) || p == NULL))
 754                 return;
 755
 756         d.list = list;
 757         d.entries = entries;
 758         d.maxlen = maxlen;
 759         if (needstats) {
 760                 d.bcfile = bcfile;
 761                 d.btotal = btotal;
 762                 snprintf(buf, sizeof(buf), "%ji", (intmax_t)maxblock);
 763                 d.s_block = strlen(buf);
 764                 d.s_flags = maxflags;
 765                 d.s_group = maxgroup;
 766                 snprintf(buf, sizeof(buf), "%ju", (uintmax_t)maxinode);
 767                 d.s_inode = strlen(buf);
 768                 snprintf(buf, sizeof(buf), "%u", maxnlink);
 769                 d.s_nlink = strlen(buf);
 770                 snprintf(buf, sizeof(buf), "%jd", (intmax_t)maxsize);
 771                 d.s_size = strlen(buf);
 772                 d.s_user = maxuser;
 773         }
 774         printfcn(&d);
 775         output = 1;
 776
 777         if (f_longform)
 778                 for (cur = list; cur; cur = cur->fts_link)
 779                         free(cur->fts_pointer);
 780 }
 781
 782 /*
 783  * Ordering for mastercmp:
 784  * If ordering the argv (fts_level = FTS_ROOTLEVEL) return non-directories
 785  * as larger than directories.  Within either group, use the sort function.
 786  * All other levels use the sort function.  Error entries remain unsorted.
 787  */
 788 static int
 789 mastercmp(const FTSENT * const *a, const FTSENT * const *b)
 790 {
 791         int a_info, b_info;
 792
 793         a_info = (*a)->fts_info;
 794         if (a_info == FTS_ERR)
 795                 return (0);
 796         b_info = (*b)->fts_info;
 797         if (b_info == FTS_ERR)
 798                 return (0);
 799
 800         if (a_info == FTS_NS || b_info == FTS_NS)
 801                 return (namecmp(*a, *b));
 802
 803         if (a_info != b_info &&
 804             (*a)->fts_level == FTS_ROOTLEVEL && !f_listdir) {
 805                 if (a_info == FTS_D)
 806                         return (1);
 807                 if (b_info == FTS_D)
 808                         return (-1);
 809         }
 810         return (sortfcn(*a, *b));
 811 }