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 1.16 2006/06/19 14:06:47 corecode 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 FTSENT **);
  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_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 static int f_timesort;          /* sort by time vice name */
 121        int f_type;              /* add type character for non-regular files */
 122 static int f_whiteout;          /* show whiteout entries */
 123 #ifdef COLORLS
 124        int f_color;             /* add type in color for non-regular files */
 125
 126 char *ansi_bgcol;               /* ANSI sequence to set background colour */
 127 char *ansi_fgcol;               /* ANSI sequence to set foreground colour */
 128 char *ansi_coloff;              /* ANSI sequence to reset colours */
 129 char *attrs_off;                /* ANSI sequence to turn off attributes */
 130 char *enter_bold;               /* ANSI sequence to set color to bold mode */
 131 #endif
 132
 133 static int rval;
 134
 135 int
 136 main(int argc, char *argv[])
 137 {
 138         static char dot[] = ".", *dotav[] = {dot, NULL};
 139         struct winsize win;
 140         int ch, fts_options, notused;
 141         char *p;
 142 #ifdef COLORLS
 143         char termcapbuf[1024];  /* termcap definition buffer */
 144         char tcapbuf[512];      /* capability buffer */
 145         char *bp = tcapbuf;
 146 #endif
 147
 148         setlocale(LC_ALL, "");
 149
 150         /* Terminal defaults to -Cq, non-terminal defaults to -1. */
 151         if (isatty(STDOUT_FILENO)) {
 152                 termwidth = 80;
 153                 if ((p = getenv("COLUMNS")) != NULL && *p != '\0')
 154                         termwidth = atoi(p);
 155                 else if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &win) != -1 &&
 156                     win.ws_col > 0)
 157                         termwidth = win.ws_col;
 158                 f_nonprint = 1;
 159         } else {
 160                 f_singlecol = 1;
 161                 /* retrieve environment variable, in case of explicit -C */
 162                 p = getenv("COLUMNS");
 163                 if (p)
 164                         termwidth = atoi(p);
 165         }
 166
 167         /* Root is -A automatically. */
 168         if (!getuid())
 169                 f_listdot = 1;
 170
 171         fts_options = FTS_PHYSICAL;
 172         while ((ch = getopt(argc, argv, "1ABCFGHLPRTWabcdfghiklmnopqrstuwxy"))
 173             != -1) {
 174                 switch (ch) {
 175                 /*
 176                  * The -1, -C, -x and -l options all override each other so
 177                  * shell aliasing works right.
 178                  */
 179                 case '1':
 180                         f_singlecol = 1;
 181                         f_longform = 0;
 182                         f_stream = 0;
 183                         break;
 184                 case 'B':
 185                         f_nonprint = 0;
 186                         f_octal = 1;
 187                         f_octal_escape = 0;
 188                         break;
 189                 case 'C':
 190                         f_sortacross = f_longform = f_singlecol = 0;
 191                         break;
 192                 case 'l':
 193                         f_longform = 1;
 194                         f_singlecol = 0;
 195                         f_stream = 0;
 196                         break;
 197                 case 'x':
 198                         f_sortacross = 1;
 199                         f_longform = 0;
 200                         f_singlecol = 0;
 201                         break;
 202                 case 'y':
 203 #ifdef _ST_FSMID_PRESENT_
 204                         f_fsmid = 1;
 205 #endif
 206                         break;
 207                 /* The -c and -u options override each other. */
 208                 case 'c':
 209                         f_statustime = 1;
 210                         f_accesstime = 0;
 211                         break;
 212                 case 'u':
 213                         f_accesstime = 1;
 214                         f_statustime = 0;
 215                         break;
 216                 case 'F':
 217                         f_type = 1;
 218                         f_slash = 0;
 219                         break;
 220                 case 'H':
 221                         fts_options |= FTS_COMFOLLOW;
 222                         break;
 223                 case 'G':
 224                         if (setenv("CLICOLOR", "", 1) != 0)
 225                                 warn("setenv: cannot set CLICOLOR");
 226                         break;
 227                 case 'L':
 228                         fts_options &= ~FTS_PHYSICAL;
 229                         fts_options |= FTS_LOGICAL;
 230                         break;
 231                 case 'P':
 232                         fts_options &= ~FTS_COMFOLLOW;
 233                         fts_options &= ~FTS_LOGICAL;
 234                         fts_options |= FTS_PHYSICAL;
 235                         break;
 236                 case 'R':
 237                         f_recursive = 1;
 238                         break;
 239                 case 'a':
 240                         fts_options |= FTS_SEEDOT;
 241                         /* FALLTHROUGH */
 242                 case 'A':
 243                         f_listdot = 1;
 244                         break;
 245                 /* The -d option turns off the -R option. */
 246                 case 'd':
 247                         f_listdir = 1;
 248                         f_recursive = 0;
 249                         break;
 250                 case 'f':
 251                         f_nosort = 1;
 252                         break;
 253                 case 'g':       /* Compatibility with 4.3BSD. */
 254                         break;
 255                 case 'h':
 256                         f_humanval = 1;
 257                         break;
 258                 case 'i':
 259                         f_inode = 1;
 260                         break;
 261                 case 'k':
 262                         f_humanval = 0;
 263                         f_kblocks = 1;
 264                         break;
 265                 case 'm':
 266                         f_stream = 1;
 267                         f_singlecol = 0;
 268                         f_longform = 0;
 269                         break;
 270                 case 'n':
 271                         f_numericonly = 1;
 272                         break;
 273                 case 'o':
 274                         f_flags = 1;
 275                         break;
 276                 case 'p':
 277                         f_slash = 1;
 278                         f_type = 1;
 279                         break;
 280                 case 'q':
 281                         f_nonprint = 1;
 282                         f_octal = 0;
 283                         f_octal_escape = 0;
 284                         break;
 285                 case 'r':
 286                         f_reversesort = 1;
 287                         break;
 288                 case 's':
 289                         f_size = 1;
 290                         break;
 291                 case 'T':
 292                         f_sectime = 1;
 293                         break;
 294                 case 't':
 295                         f_timesort = 1;
 296                         break;
 297                 case 'W':
 298                         f_whiteout = 1;
 299                         break;
 300                 case 'b':
 301                         f_nonprint = 0;
 302                         f_octal = 0;
 303                         f_octal_escape = 1;
 304                         break;
 305                 case 'w':
 306                         f_nonprint = 0;
 307                         f_octal = 0;
 308                         f_octal_escape = 0;
 309                         break;
 310                 default:
 311                 case '?':
 312                         usage();
 313                 }
 314         }
 315         argc -= optind;
 316         argv += optind;
 317
 318         /* Enabling of colours is conditional on the environment. */
 319         if (getenv("CLICOLOR") &&
 320             (isatty(STDOUT_FILENO) || getenv("CLICOLOR_FORCE")))
 321 #ifdef COLORLS
 322                 if (tgetent(termcapbuf, getenv("TERM")) == 1) {
 323                         ansi_fgcol = tgetstr("AF", &bp);
 324                         ansi_bgcol = tgetstr("AB", &bp);
 325                         attrs_off = tgetstr("me", &bp);
 326                         enter_bold = tgetstr("md", &bp);
 327
 328                         /* To switch colours off use 'op' if
 329                          * available, otherwise use 'oc', or
 330                          * don't do colours at all. */
 331                         ansi_coloff = tgetstr("op", &bp);
 332                         if (!ansi_coloff)
 333                                 ansi_coloff = tgetstr("oc", &bp);
 334                         if (ansi_fgcol && ansi_bgcol && ansi_coloff)
 335                                 f_color = 1;
 336                 }
 337 #else
 338                 fprintf(stderr, "Color support not compiled in.\n");
 339 #endif /*COLORLS*/
 340
 341 #ifdef COLORLS
 342         if (f_color) {
 343                 /*
 344                  * We can't put tabs and color sequences together:
 345                  * column number will be incremented incorrectly
 346                  * for "stty oxtabs" mode.
 347                  */
 348                 f_notabs = 1;
 349                 signal(SIGINT, colorquit);
 350                 signal(SIGQUIT, colorquit);
 351                 parsecolors(getenv("LSCOLORS"));
 352         }
 353 #endif
 354
 355         /*
 356          * If not -F, -i, -l, -s or -t options, don't require stat
 357          * information, unless in color mode in which case we do
 358          * need this to determine which colors to display.
 359          */
 360         if (!f_inode && !f_longform && !f_size && !f_timesort && !f_type
 361 #ifdef COLORLS
 362             && !f_color
 363 #endif
 364             )
 365                 fts_options |= FTS_NOSTAT;
 366
 367         /*
 368          * If not -F, -d or -l options, follow any symbolic links listed on
 369          * the command line.
 370          */
 371         if (!f_longform && !f_listdir && !f_type)
 372                 fts_options |= FTS_COMFOLLOW;
 373
 374         /*
 375          * If -W, show whiteout entries
 376          */
 377 #ifdef FTS_WHITEOUT
 378         if (f_whiteout)
 379                 fts_options |= FTS_WHITEOUT;
 380 #endif
 381
 382         /* If -l or -s, figure out block size. */
 383         if (f_longform || f_size) {
 384                 if (f_kblocks)
 385                         blocksize = 2;
 386                 else {
 387                         getbsize(&notused, &blocksize);
 388                         blocksize /= 512;
 389                 }
 390         }
 391         /* Select a sort function. */
 392         if (f_reversesort) {
 393                 if (!f_timesort)
 394                         sortfcn = revnamecmp;
 395                 else if (f_accesstime)
 396                         sortfcn = revacccmp;
 397                 else if (f_statustime)
 398                         sortfcn = revstatcmp;
 399                 else            /* Use modification time. */
 400                         sortfcn = revmodcmp;
 401         } else {
 402                 if (!f_timesort)
 403                         sortfcn = namecmp;
 404                 else if (f_accesstime)
 405                         sortfcn = acccmp;
 406                 else if (f_statustime)
 407                         sortfcn = statcmp;
 408                 else            /* Use modification time. */
 409                         sortfcn = modcmp;
 410         }
 411
 412         /* Select a print function. */
 413         if (f_singlecol)
 414                 printfcn = printscol;
 415         else if (f_longform)
 416                 printfcn = printlong;
 417         else if (f_stream)
 418                 printfcn = printstream;
 419         else
 420                 printfcn = printcol;
 421
 422         if (argc)
 423                 traverse(argc, argv, fts_options);
 424         else
 425                 traverse(1, dotav, fts_options);
 426         exit(rval);
 427 }
 428
 429 static int output;              /* If anything output. */
 430
 431 /*
 432  * Traverse() walks the logical directory structure specified by the argv list
 433  * in the order specified by the mastercmp() comparison function.  During the
 434  * traversal it passes linked lists of structures to display() which represent
 435  * a superset (may be exact set) of the files to be displayed.
 436  */
 437 static void
 438 traverse(int argc, char *argv[], int options)
 439 {
 440         FTS *ftsp;
 441         FTSENT *p, *chp;
 442         int ch_options, error;
 443
 444         if ((ftsp =
 445             fts_open(argv, options, f_nosort ? NULL : mastercmp)) == NULL)
 446                 err(1, "fts_open");
 447
 448         /*
 449          * We ignore errors from fts_children here since they will be
 450          * replicated and signalled on the next call to fts_read() below.
 451          */
 452         chp = fts_children(ftsp, 0);
 453         if (chp != NULL)
 454                 display(NULL, chp);
 455         if (f_listdir) {
 456                 fts_close(ftsp);
 457                 return;
 458         }
 459
 460         /*
 461          * If not recursing down this tree and don't need stat info, just get
 462          * the names.
 463          */
 464         ch_options = !f_recursive && options & FTS_NOSTAT ? FTS_NAMEONLY : 0;
 465
 466         while ((p = fts_read(ftsp)) != NULL)
 467                 switch (p->fts_info) {
 468                 case FTS_DC:
 469                         warnx("%s: directory causes a cycle", p->fts_name);
 470                         break;
 471                 case FTS_DNR:
 472                 case FTS_ERR:
 473                         warnx("%s: %s", p->fts_name, strerror(p->fts_errno));
 474                         rval = 1;
 475                         break;
 476                 case FTS_D:
 477                         if (p->fts_level != FTS_ROOTLEVEL &&
 478                             p->fts_name[0] == '.' && !f_listdot)
 479                                 break;
 480
 481                         /*
 482                          * If already output something, put out a newline as
 483                          * a separator.  If multiple arguments, precede each
 484                          * directory with its name.
 485                          */
 486                         if (output) {
 487                                 putchar('\n');
 488                                 printname(p->fts_path);
 489                                 puts(":");
 490                         } else if (argc > 1) {
 491                                 printname(p->fts_path);
 492                                 puts(":");
 493                                 output = 1;
 494                         }
 495                         chp = fts_children(ftsp, ch_options);
 496                         display(p, chp);
 497
 498                         if (!f_recursive && chp != NULL)
 499                                 fts_set(ftsp, p, FTS_SKIP);
 500                         break;
 501                 default:
 502                         break;
 503                 }
 504         error = errno;
 505         fts_close(ftsp);
 506         errno = error;
 507         if (errno)
 508                 err(1, "fts_read");
 509 }
 510
 511 /*
 512  * Display() takes a linked list of FTSENT structures and passes the list
 513  * along with any other necessary information to the print function.  P
 514  * points to the parent directory of the display list.
 515  */
 516 static void
 517 display(const FTSENT *p, FTSENT *list)
 518 {
 519         struct stat *sp;
 520         DISPLAY d;
 521         FTSENT *cur;
 522         NAMES *np;
 523         off_t maxsize;
 524         u_long btotal, maxlen;
 525         int64_t maxblock;
 526         ino_t maxinode;
 527         nlink_t maxnlink;
 528         int bcfile, maxflags;
 529         gid_t maxgroup;
 530         uid_t maxuser;
 531         size_t fsmidlen, flen, ulen, glen;
 532         char *initmax;
 533         int entries, needstats;
 534         const char *user, *group;
 535         char *flags;
 536         int64_t fsmid;
 537         char buf[STRBUF_SIZEOF(u_quad_t) + 1];
 538         char ngroup[STRBUF_SIZEOF(uid_t) + 1];
 539         char nuser[STRBUF_SIZEOF(gid_t) + 1];
 540
 541         needstats = f_inode || f_longform || f_size;
 542         flen = 0;
 543         btotal = 0;
 544         initmax = getenv("LS_COLWIDTHS");
 545         /* Fields match -lios order.  New ones should be added at the end. */
 546         maxblock = maxinode = maxlen = maxnlink =
 547             maxuser = maxgroup = maxflags = maxsize = 0;
 548         if (initmax != NULL && *initmax != '\0') {
 549                 char *initmax2, *jinitmax;
 550                 int ninitmax;
 551
 552                 /* Fill-in "::" as "0:0:0" for the sake of scanf. */
 553                 jinitmax = malloc(strlen(initmax) * 2 + 2);
 554                 if (jinitmax == NULL)
 555                         err(1, "malloc");
 556                 initmax2 = jinitmax;
 557                 if (*initmax == ':')
 558                         strcpy(initmax2, "0:"), initmax2 += 2;
 559                 else
 560                         *initmax2++ = *initmax, *initmax2 = '\0';
 561                 for (initmax++; *initmax != '\0'; initmax++) {
 562                         if (initmax[-1] == ':' && initmax[0] == ':') {
 563                                 *initmax2++ = '0';
 564                                 *initmax2++ = initmax[0];
 565                                 initmax2[1] = '\0';
 566                         } else {
 567                                 *initmax2++ = initmax[0];
 568                                 initmax2[1] = '\0';
 569                         }
 570                 }
 571                 if (initmax2[-1] == ':')
 572                         strcpy(initmax2, "0");
 573
 574                 ninitmax = sscanf(jinitmax,
 575                     " %llu : %lli : %u : %i : %i : %i : %llu : %lu ",
 576                     &maxinode, &maxblock, &maxnlink, &maxuser,
 577                     &maxgroup, &maxflags, &maxsize, &maxlen);
 578                 f_notabs = 1;
 579                 switch (ninitmax) {
 580                 case 0:
 581                         maxinode = 0;
 582                         /* FALLTHROUGH */
 583                 case 1:
 584                         maxblock = 0;
 585                         /* FALLTHROUGH */
 586                 case 2:
 587                         maxnlink = 0;
 588                         /* FALLTHROUGH */
 589                 case 3:
 590                         maxuser = 0;
 591                         /* FALLTHROUGH */
 592                 case 4:
 593                         maxgroup = 0;
 594                         /* FALLTHROUGH */
 595                 case 5:
 596                         maxflags = 0;
 597                         /* FALLTHROUGH */
 598                 case 6:
 599                         maxsize = 0;
 600                         /* FALLTHROUGH */
 601                 case 7:
 602                         maxlen = 0;
 603                         /* FALLTHROUGH */
 604 #ifdef COLORLS
 605                         if (!f_color)
 606 #endif
 607                                 f_notabs = 0;
 608                         /* FALLTHROUGH */
 609                 default:
 610                         break;
 611                 }
 612                 MAKENINES(maxinode);
 613                 MAKENINES(maxblock);
 614                 MAKENINES(maxnlink);
 615                 MAKENINES(maxsize);
 616                 free(jinitmax);
 617         }
 618         bcfile = 0;
 619         flags = NULL;
 620         for (cur = list, entries = 0; cur; cur = cur->fts_link) {
 621                 if (cur->fts_info == FTS_ERR || cur->fts_info == FTS_NS) {
 622                         warnx("%s: %s",
 623                             cur->fts_name, strerror(cur->fts_errno));
 624                         cur->fts_number = NO_PRINT;
 625                         rval = 1;
 626                         continue;
 627                 }
 628                 /*
 629                  * P is NULL if list is the argv list, to which different rules
 630                  * apply.
 631                  */
 632                 if (p == NULL) {
 633                         /* Directories will be displayed later. */
 634                         if (cur->fts_info == FTS_D && !f_listdir) {
 635                                 cur->fts_number = NO_PRINT;
 636                                 continue;
 637                         }
 638                 } else {
 639                         /* Only display dot file if -a/-A set. */
 640                         if (cur->fts_name[0] == '.' && !f_listdot) {
 641                                 cur->fts_number = NO_PRINT;
 642                                 continue;
 643                         }
 644                 }
 645                 if (cur->fts_namelen > maxlen)
 646                         maxlen = cur->fts_namelen;
 647                 if (f_octal || f_octal_escape) {
 648                         u_long t = len_octal(cur->fts_name, cur->fts_namelen);
 649
 650                         if (t > maxlen)
 651                                 maxlen = t;
 652                 }
 653                 if (needstats) {
 654                         sp = cur->fts_statp;
 655                         if (sp->st_blocks > maxblock)
 656                                 maxblock = sp->st_blocks;
 657                         if (sp->st_ino > maxinode)
 658                                 maxinode = sp->st_ino;
 659                         if (sp->st_nlink > maxnlink)
 660                                 maxnlink = sp->st_nlink;
 661                         if (sp->st_size > maxsize)
 662                                 maxsize = sp->st_size;
 663
 664                         btotal += sp->st_blocks;
 665                         if (f_longform) {
 666                                 if (f_numericonly) {
 667                                         snprintf(nuser, sizeof(nuser),
 668                                             "%u", sp->st_uid);
 669                                         snprintf(ngroup, sizeof(ngroup),
 670                                             "%u", sp->st_gid);
 671                                         user = nuser;
 672                                         group = ngroup;
 673                                 } else {
 674                                         user = user_from_uid(sp->st_uid, 0);
 675                                         group = group_from_gid(sp->st_gid, 0);
 676                                 }
 677                                 if ((ulen = strlen(user)) > maxuser)
 678                                         maxuser = ulen;
 679                                 if ((glen = strlen(group)) > maxgroup)
 680                                         maxgroup = glen;
 681                                 if (f_flags) {
 682                                         flags = fflagstostr(sp->st_flags);
 683                                         if (flags != NULL && *flags == '\0') {
 684                                                 free(flags);
 685                                                 flags = strdup("-");
 686                                         }
 687                                         if (flags == NULL)
 688                                                 err(1, "flagstostr");
 689                                         flen = strlen(flags);
 690                                         if (flen > (size_t)maxflags)
 691                                                 maxflags = flen;
 692                                 } else {
 693                                         flen = 0;
 694                                 }
 695 #ifdef _ST_FSMID_PRESENT_
 696                                 if (f_fsmid) {
 697                                         fsmid = sp->st_fsmid;
 698                                         fsmidlen = 18;
 699                                 } else {
 700                                         fsmid = 0;
 701                                         fsmidlen = 0;
 702                                 }
 703 #else
 704                                 fsmidlen = 0;
 705 #endif
 706
 707                                 if ((np = malloc(sizeof(NAMES) +
 708                                     ulen + glen + flen + fsmidlen + 4)) == NULL)
 709                                         err(1, "malloc");
 710
 711                                 np->user = &np->data[0];
 712                                 strcpy(np->user, user);
 713                                 np->group = &np->data[ulen + 1];
 714                                 strcpy(np->group, group);
 715
 716                                 if (S_ISCHR(sp->st_mode) ||
 717                                     S_ISBLK(sp->st_mode))
 718                                         bcfile = 1;
 719
 720                                 if (f_flags) {
 721                                         np->flags = &np->data[ulen + glen + 2];
 722                                         strcpy(np->flags, flags);
 723                                         free(flags);
 724                                 }
 725 #ifdef _ST_FSMID_PRESENT_
 726                                 if (f_fsmid) {
 727                                         np->fsmid = np->data + ulen + glen + flen + 3;
 728                                         snprintf(np->fsmid, fsmidlen + 1,
 729                                                  "%016llx", fsmid);
 730                                 }
 731 #endif
 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), "%lli", maxblock);
 754                 d.s_block = strlen(buf);
 755                 d.s_flags = maxflags;
 756                 d.s_group = maxgroup;
 757                 snprintf(buf, sizeof(buf), "%llu", 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), "%llu", 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 **a, const FTSENT **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 }