ls/ls.c

   1 /*
   2  * Copyright (c) 1989, 1993, 1994
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * This code is derived from software contributed to Berkeley by
   6  * Michael Fischbein.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. All advertising materials mentioning features or use of this software
  17  *    must display the following acknowledgement:
  18  *      This product includes software developed by the University of
  19  *      California, Berkeley and its contributors.
  20  * 4. Neither the name of the University nor the names of its contributors
  21  *    may be used to endorse or promote products derived from this software
  22  *    without specific prior written permission.
  23  *
  24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  34  * SUCH DAMAGE.
  35  */
  36
  37 #include <sys/cdefs.h>
  38 #ifndef lint
  39 __used static const char copyright[] =
  40 "@(#) Copyright (c) 1989, 1993, 1994\n\
  41         The Regents of the University of California.  All rights reserved.\n";
  42 #endif /* not lint */
  43
  44 #if 0
  45 #ifndef lint
  46 static char sccsid[] = "@(#)ls.c        8.5 (Berkeley) 4/2/94";
  47 #endif /* not lint */
  48 #endif
  49 #include <sys/cdefs.h>
  50 __RCSID("$FreeBSD: src/bin/ls/ls.c,v 1.66 2002/09/21 01:28:36 wollman Exp $");
  51
  52 #include <sys/types.h>
  53 #include <sys/stat.h>
  54 #include <sys/ioctl.h>
  55
  56 #include <dirent.h>
  57 #include <err.h>
  58 #include <errno.h>
  59 #include <fts.h>
  60 #include <grp.h>
  61 #include <limits.h>
  62 #include <locale.h>
  63 #include <pwd.h>
  64 #include <stdio.h>
  65 #include <stdlib.h>
  66 #include <string.h>
  67 #include <unistd.h>
  68 #ifdef COLORLS
  69 #include <termcap.h>
  70 #include <signal.h>
  71 #endif
  72 #ifdef __APPLE__
  73 #include <sys/acl.h>
  74 #include <sys/xattr.h>
  75 #include <sys/param.h>
  76 #include <get_compat.h>
  77 #include <sys/sysctl.h>
  78 #include <System/sys/fsctl.h>
  79 #else
  80 #define COMPAT_MODE(a,b) (1)
  81 #endif /* __APPLE__ */
  82 #include "ls.h"
  83 #include "extern.h"
  84
  85 /*
  86  * Upward approximation of the maximum number of characters needed to
  87  * represent a value of integral type t as a string, excluding the
  88  * NUL terminator, with provision for a sign.
  89  */
  90 #define STRBUF_SIZEOF(t)        (1 + CHAR_BIT * sizeof(t) / 3 + 1)
  91
  92 static void      display(FTSENT *, FTSENT *);
  93 static u_quad_t  makenines(u_quad_t);
  94 static int       mastercmp(const FTSENT **, const FTSENT **);
  95 static void      traverse(int, char **, int);
  96
  97 static void (*printfcn)(DISPLAY *);
  98 static int (*sortfcn)(const FTSENT *, const FTSENT *);
  99
 100 long blocksize;                 /* block size units */
 101 int termwidth = 80;             /* default terminal width */
 102
 103 /* flags */
 104        int f_accesstime;        /* use time of last access */
 105        int f_birthtime;         /* use time of file birth */
 106        int f_flags;             /* show flags associated with a file */
 107        int f_humanval;          /* show human-readable file sizes */
 108        int f_inode;             /* print inode */
 109 static int f_kblocks;           /* print size in kilobytes */
 110 static int f_listdir;           /* list actual directory, not contents */
 111 static int f_listdot;           /* list files beginning with . */
 112        int f_longform;          /* long listing format */
 113        int f_nonprint;          /* show unprintables as ? */
 114 static int f_nosort;            /* don't sort output */
 115        int f_notabs;            /* don't use tab-separated multi-col output */
 116        int f_numericonly;       /* don't convert uid/gid to name */
 117        int f_octal;             /* show unprintables as \xxx */
 118        int f_octal_escape;      /* like f_octal but use C escapes if possible */
 119 static int f_recursive;         /* ls subdirectories also */
 120 static int f_reversesort;       /* reverse whatever sort is used */
 121        int f_sectime;           /* print the real time for all files */
 122 static int f_singlecol;         /* use single column output */
 123        int f_size;              /* list size in short listing */
 124        int f_slash;             /* similar to f_type, but only for dirs */
 125        int f_sortacross;        /* sort across rows, not down columns */
 126        int f_statustime;        /* use time of last mode change */
 127        int f_stream;            /* stream the output, separate with commas */
 128 static int f_timesort;          /* sort by time vice name */
 129 static int f_sizesort;          /* sort by size */
 130        int f_type;              /* add type character for non-regular files */
 131 static int f_whiteout;          /* show whiteout entries */
 132        int f_acl;               /* show ACLs in long listing */
 133        int f_xattr;             /* show extended attributes in long listing */
 134        int f_group;             /* show group */
 135        int f_owner;             /* show owner */
 136        int f_dataless;          /* distinguish dataless files in long listing,
 137                                    and don't materialize dataless directories. */
 138 #ifdef COLORLS
 139        int f_color;             /* add type in color for non-regular files */
 140
 141 char *ansi_bgcol;               /* ANSI sequence to set background colour */
 142 char *ansi_fgcol;               /* ANSI sequence to set foreground colour */
 143 char *ansi_coloff;              /* ANSI sequence to reset colours */
 144 char *attrs_off;                /* ANSI sequence to turn off attributes */
 145 char *enter_bold;               /* ANSI sequence to set color to bold mode */
 146 #endif
 147
 148 static int rval;
 149
 150 int
 151 main(int argc, char *argv[])
 152 {
 153         static char dot[] = ".", *dotav[] = {dot, NULL};
 154         struct winsize win;
 155         int ch, fts_options, notused;
 156         char *p;
 157 #ifdef COLORLS
 158         char termcapbuf[1024];  /* termcap definition buffer */
 159         char tcapbuf[512];      /* capability buffer */
 160         char *bp = tcapbuf;
 161 #endif
 162
 163         if (argc < 1)
 164                 usage();
 165         (void)setlocale(LC_ALL, "");
 166
 167         /* Terminal defaults to -Cq, non-terminal defaults to -1. */
 168         if (isatty(STDOUT_FILENO)) {
 169                 termwidth = 80;
 170                 if ((p = getenv("COLUMNS")) != NULL && *p != '\0')
 171                         termwidth = atoi(p);
 172                 else if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &win) != -1 &&
 173                     win.ws_col > 0)
 174                         termwidth = win.ws_col;
 175                 f_nonprint = 1;
 176         } else {
 177                 f_singlecol = 1;
 178                 /* retrieve environment variable, in case of explicit -C */
 179                 p = getenv("COLUMNS");
 180                 if (p)
 181                         termwidth = atoi(p);
 182         }
 183
 184         /* Root is -A automatically. */
 185         if (!getuid())
 186                 f_listdot = 1;
 187
 188         fts_options = FTS_PHYSICAL;
 189         while ((ch = getopt(argc, argv, "1@ABCFGHLOPRSTUWabcdefghiklmnopqrstuvwx%"))
 190             != -1) {
 191                 switch (ch) {
 192                 /*
 193                  * The -1, -C, -x and -l options all override each other so
 194                  * shell aliasing works right.
 195                  */
 196                 case '1':
 197                         f_singlecol = 1;
 198                         f_longform = 0;
 199                         f_stream = 0;
 200                         break;
 201                 case 'B':
 202                         f_nonprint = 0;
 203                         f_octal = 1;
 204                         f_octal_escape = 0;
 205                         break;
 206                 case 'C':
 207                         f_sortacross = f_longform = f_singlecol = 0;
 208                         break;
 209                 case 'l':
 210                         f_longform = 1;
 211                         f_singlecol = 0;
 212                         f_stream = 0;
 213                         break;
 214                 case 'x':
 215                         f_sortacross = 1;
 216                         f_longform = 0;
 217                         f_singlecol = 0;
 218                         break;
 219                 /* The -c and -u options override each other. */
 220                 case 'c':
 221                         f_statustime = 1;
 222                         f_accesstime = f_birthtime = 0;
 223                         break;
 224                 case 'u':
 225                         f_accesstime = 1;
 226                         f_statustime = f_birthtime = 0;
 227                         break;
 228                 case 'U':
 229                         f_birthtime = 1;
 230                         f_statustime = f_accesstime = 0;
 231                         break;
 232                 case 'F':
 233                         f_type = 1;
 234                         f_slash = 0;
 235                         break;
 236                 case 'H':
 237                         if (COMPAT_MODE("bin/ls", "Unix2003")) {
 238                                 fts_options &= ~FTS_LOGICAL;
 239                                 fts_options |= FTS_PHYSICAL;
 240                                 fts_options |= FTS_COMFOLLOWDIR;
 241                         } else
 242                                 fts_options |= FTS_COMFOLLOW;
 243                         break;
 244                 case 'G':
 245                         setenv("CLICOLOR", "", 1);
 246                         break;
 247                 case 'L':
 248                         fts_options &= ~FTS_PHYSICAL;
 249                         fts_options |= FTS_LOGICAL;
 250                         if (COMPAT_MODE("bin/ls", "Unix2003")) {
 251                                 fts_options &= ~(FTS_COMFOLLOW|FTS_COMFOLLOWDIR);
 252                         }
 253                         break;
 254                 case 'P':
 255                         fts_options &= ~(FTS_COMFOLLOW|FTS_COMFOLLOWDIR);
 256                         fts_options &= ~FTS_LOGICAL;
 257                         fts_options |= FTS_PHYSICAL;
 258                         break;
 259                 case 'R':
 260                         f_recursive = 1;
 261                         break;
 262                 case 'a':
 263                         fts_options |= FTS_SEEDOT;
 264                         /* FALLTHROUGH */
 265                 case 'A':
 266                         f_listdot = 1;
 267                         break;
 268                 /* The -d option turns off the -R option. */
 269                 case 'd':
 270                         f_listdir = 1;
 271                         f_recursive = 0;
 272                         break;
 273                 case 'f':
 274                         f_nosort = 1;
 275                         if (COMPAT_MODE("bin/ls", "Unix2003")) {
 276                                 fts_options |= FTS_SEEDOT;
 277                                 f_listdot = 1;
 278                         }
 279                         break;
 280                 case 'g':       /* Compatibility with Unix03 */
 281                         if (COMPAT_MODE("bin/ls", "Unix2003")) {
 282                                 f_group = 1;
 283                                 f_longform = 1;
 284                                 f_singlecol = 0;
 285                                 f_stream = 0;
 286                         }
 287                         break;
 288                 case 'h':
 289                         f_humanval = 1;
 290                         break;
 291                 case 'i':
 292                         f_inode = 1;
 293                         break;
 294                 case 'k':
 295                         f_kblocks = 1;
 296                         break;
 297                 case 'm':
 298                         f_stream = 1;
 299                         f_singlecol = 0;
 300                         f_longform = 0;
 301                         break;
 302                 case 'n':
 303                         f_numericonly = 1;
 304                         if (COMPAT_MODE("bin/ls", "Unix2003")) {
 305                                 f_longform = 1;
 306                                 f_singlecol = 0;
 307                                 f_stream = 0;
 308                         }
 309                         break;
 310                 case 'o':
 311                         if (COMPAT_MODE("bin/ls", "Unix2003")) {
 312                                 f_owner = 1;
 313                                 f_longform = 1;
 314                                 f_singlecol = 0;
 315                                 f_stream = 0;
 316                         } else {
 317                                 f_flags = 1;
 318                         }
 319                         break;
 320                 case 'p':
 321                         f_slash = 1;
 322                         f_type = 1;
 323                         break;
 324                 case 'q':
 325                         f_nonprint = 1;
 326                         f_octal = 0;
 327                         f_octal_escape = 0;
 328                         break;
 329                 case 'r':
 330                         f_reversesort = 1;
 331                         break;
 332                 case 'S':
 333                         /* Darwin 1.4.1 compatibility */
 334                         f_sizesort = 1;
 335                         break;
 336                 case 's':
 337                         f_size = 1;
 338                         break;
 339                 case 'T':
 340                         f_sectime = 1;
 341                         break;
 342                 case 't':
 343                         f_timesort = 1;
 344                         break;
 345                 case 'W':
 346                         f_whiteout = 1;
 347                         break;
 348                 case 'v':
 349                         /* Darwin 1.4.1 compatibility */
 350                         f_nonprint = 0;
 351                         break;
 352                 case 'b':
 353                         f_nonprint = 0;
 354                         f_octal = 0;
 355                         f_octal_escape = 1;
 356                         break;
 357                 case 'w':
 358                         f_nonprint = 0;
 359                         f_octal = 0;
 360                         f_octal_escape = 0;
 361                         break;
 362                 case 'e':
 363                         f_acl = 1;
 364                         break;
 365                 case '@':
 366                         f_xattr = 1;
 367                         break;
 368                 case 'O':
 369                         f_flags = 1;
 370                         break;
 371                 case '%':
 372                         f_dataless = 1;
 373                         break;
 374                 default:
 375                 case '?':
 376                         usage();
 377                 }
 378         }
 379         argc -= optind;
 380         argv += optind;
 381
 382         /* Enabling of colours is conditional on the environment. */
 383         if (getenv("CLICOLOR") &&
 384             (isatty(STDOUT_FILENO) || getenv("CLICOLOR_FORCE")))
 385 #ifdef COLORLS
 386                 if (tgetent(termcapbuf, getenv("TERM")) == 1) {
 387                         ansi_fgcol = tgetstr("AF", &bp);
 388                         ansi_bgcol = tgetstr("AB", &bp);
 389                         attrs_off = tgetstr("me", &bp);
 390                         enter_bold = tgetstr("md", &bp);
 391
 392                         /* To switch colours off use 'op' if
 393                          * available, otherwise use 'oc', or
 394                          * don't do colours at all. */
 395                         ansi_coloff = tgetstr("op", &bp);
 396                         if (!ansi_coloff)
 397                                 ansi_coloff = tgetstr("oc", &bp);
 398                         if (ansi_fgcol && ansi_bgcol && ansi_coloff)
 399                                 f_color = 1;
 400                 }
 401 #else
 402                 (void)fprintf(stderr, "Color support not compiled in.\n");
 403 #endif /*COLORLS*/
 404
 405 #ifdef COLORLS
 406         if (f_color) {
 407                 /*
 408                  * We can't put tabs and color sequences together:
 409                  * column number will be incremented incorrectly
 410                  * for "stty oxtabs" mode.
 411                  */
 412                 f_notabs = 1;
 413                 (void)signal(SIGINT, colorquit);
 414                 (void)signal(SIGQUIT, colorquit);
 415                 parsecolors(getenv("LSCOLORS"));
 416         }
 417 #endif
 418
 419         /*
 420          * If not -F, -i, -l, -s or -t options, don't require stat
 421          * information, unless in color mode in which case we do
 422          * need this to determine which colors to display.
 423          */
 424         if (!f_inode && !f_longform && !f_size && !f_timesort && !f_type && !f_sizesort
 425 #ifdef COLORLS
 426             && !f_color
 427 #endif
 428             )
 429                 fts_options |= FTS_NOSTAT;
 430
 431         /*
 432          * If not -F, -d or -l options, follow any symbolic links listed on
 433          * the command line.
 434          */
 435         if (!f_longform && !f_listdir && !f_type && !f_inode)
 436                 fts_options |= FTS_COMFOLLOW;
 437
 438         /*
 439          * If -W, show whiteout entries
 440          */
 441 #ifdef FTS_WHITEOUT
 442         if (f_whiteout)
 443                 fts_options |= FTS_WHITEOUT;
 444 #endif
 445
 446         /* If -l or -s, figure out block size. */
 447         if (f_longform || f_size) {
 448                 if (f_kblocks)
 449                         blocksize = 2;
 450                 else {
 451                         (void)getbsize(&notused, &blocksize);
 452                         blocksize /= 512;
 453                 }
 454         }
 455         /* Select a sort function. */
 456         if (f_reversesort) {
 457                 if (f_sizesort)
 458                         sortfcn = revsizecmp;
 459                 else if (!f_timesort)
 460                         sortfcn = revnamecmp;
 461                 else if (f_accesstime)
 462                         sortfcn = revacccmp;
 463                 else if (f_statustime)
 464                         sortfcn = revstatcmp;
 465                 else if (f_birthtime)
 466                         sortfcn = revbirthcmp;
 467                 else            /* Use modification time. */
 468                         sortfcn = revmodcmp;
 469         } else {
 470                 if (f_sizesort)
 471                         sortfcn = sizecmp;
 472                 else if (!f_timesort)
 473                         sortfcn = namecmp;
 474                 else if (f_accesstime)
 475                         sortfcn = acccmp;
 476                 else if (f_statustime)
 477                         sortfcn = statcmp;
 478                 else if (f_birthtime)
 479                         sortfcn = birthcmp;
 480                 else            /* Use modification time. */
 481                         sortfcn = modcmp;
 482         }
 483
 484         /* Select a print function. */
 485         if (f_singlecol)
 486                 printfcn = printscol;
 487         else if (f_longform)
 488                 printfcn = printlong;
 489         else if (f_stream)
 490                 printfcn = printstream;
 491         else
 492                 printfcn = printcol;
 493
 494 #ifdef __APPLE__
 495         if (f_dataless) {
 496                 // don't materialize dataless directories from the cloud
 497                 // (particularly usefull when listing recursively)
 498                 int state = 1;
 499                 if (sysctlbyname("vfs.nspace.prevent_materialization", NULL, NULL, &state, sizeof(state)) < 0) {
 500                         err(1, "prevent_materialization");
 501                 }
 502         }
 503 #endif /* __APPLE__ */
 504
 505         if (argc)
 506                 traverse(argc, argv, fts_options);
 507         else
 508                 traverse(1, dotav, fts_options);
 509         exit(rval);
 510 }
 511
 512 static int output;              /* If anything output. */
 513
 514 /*
 515  * Traverse() walks the logical directory structure specified by the argv list
 516  * in the order specified by the mastercmp() comparison function.  During the
 517  * traversal it passes linked lists of structures to display() which represent
 518  * a superset (may be exact set) of the files to be displayed.
 519  */
 520 static void
 521 traverse(int argc, char *argv[], int options)
 522 {
 523         FTS *ftsp;
 524         FTSENT *p, *chp;
 525         int ch_options, error;
 526
 527         if ((ftsp =
 528             fts_open(argv, options, f_nosort ? NULL : mastercmp)) == NULL)
 529                 err(1, "fts_open");
 530
 531         display(NULL, fts_children(ftsp, 0));
 532         if (f_listdir) {
 533                 fts_close(ftsp);
 534                 return;
 535         }
 536
 537         /*
 538          * If not recursing down this tree and don't need stat info, just get
 539          * the names.
 540          */
 541         ch_options = !f_recursive && options & FTS_NOSTAT ? FTS_NAMEONLY : 0;
 542
 543         while ((p = fts_read(ftsp)) != NULL)
 544                 switch (p->fts_info) {
 545                 case FTS_DC:
 546                         warnx("%s: directory causes a cycle", p->fts_name);
 547                         if (COMPAT_MODE("bin/ls", "Unix2003")) {
 548                                 rval = 1;
 549                         }
 550                         break;
 551                 case FTS_DNR:
 552                 case FTS_ERR:
 553                         warnx("%s: %s", p->fts_name, strerror(p->fts_errno));
 554                         rval = 1;
 555                         break;
 556                 case FTS_D:
 557                         if (p->fts_level != FTS_ROOTLEVEL &&
 558                             p->fts_name[0] == '.' && !f_listdot) {
 559                                 fts_set(ftsp, p, FTS_SKIP);
 560                                 break;
 561                         }
 562
 563                         /*
 564                          * If already output something, put out a newline as
 565                          * a separator.  If multiple arguments, precede each
 566                          * directory with its name.
 567                          */
 568                         if (output)
 569                                 (void)printf("\n%s:\n", p->fts_path);
 570                         else if (argc > 1) {
 571                                 (void)printf("%s:\n", p->fts_path);
 572                                 output = 1;
 573                         }
 574                         chp = fts_children(ftsp, ch_options);
 575                         if (COMPAT_MODE("bin/ls", "Unix2003") && ((options & FTS_LOGICAL)!=0)) {
 576                                 FTSENT *curr;
 577                                 for (curr = chp; curr; curr = curr->fts_link) {
 578                                         if (curr->fts_info == FTS_SLNONE)
 579                                                 curr->fts_number = NO_PRINT;
 580                                 }
 581                         }
 582                         display(p, chp);
 583
 584                         if (!f_recursive && chp != NULL)
 585                                 (void)fts_set(ftsp, p, FTS_SKIP);
 586                         break;
 587                 case FTS_SLNONE:        /* Same as default unless Unix conformance */
 588                         if (COMPAT_MODE("bin/ls", "Unix2003")) {
 589                                 if ((options & FTS_LOGICAL)!=0) {       /* -L was specified */
 590                                         warnx("%s: %s", p->fts_name, strerror(p->fts_errno ?: ENOENT));
 591                                         rval = 1;
 592                                 }
 593                         }
 594                         break;
 595                 default:
 596                         break;
 597                 }
 598         error = errno;
 599         fts_close(ftsp);
 600         errno = error;
 601
 602         if (errno)
 603                 err(1, "fts_read");
 604 }
 605
 606 /*
 607  * Display() takes a linked list of FTSENT structures and passes the list
 608  * along with any other necessary information to the print function.  P
 609  * points to the parent directory of the display list.
 610  */
 611 static void
 612 display(FTSENT *p, FTSENT *list)
 613 {
 614         struct stat *sp;
 615         DISPLAY d;
 616         FTSENT *cur;
 617         NAMES *np;
 618         off_t maxsize;
 619         u_int64_t btotal, maxblock;
 620         u_long lattrlen, maxlen, maxnlink, maxlattr;
 621         ino_t maxinode;
 622         int bcfile, maxflags;
 623         gid_t maxgroup;
 624         uid_t maxuser;
 625         size_t flen, ulen, glen;
 626         char *initmax;
 627         int entries, needstats;
 628         const char *user, *group;
 629         char *flags, *lattr = NULL;
 630         char buf[STRBUF_SIZEOF(u_quad_t) + 1];
 631         char ngroup[STRBUF_SIZEOF(uid_t) + 1];
 632         char nuser[STRBUF_SIZEOF(gid_t) + 1];
 633 #ifdef __APPLE__
 634         acl_entry_t dummy;
 635         ssize_t xattr_size;
 636         char *filename;
 637         char path[MAXPATHLEN+1];
 638 #endif // __APPLE__
 639         /*
 640          * If list is NULL there are two possibilities: that the parent
 641          * directory p has no children, or that fts_children() returned an
 642          * error.  We ignore the error case since it will be replicated
 643          * on the next call to fts_read() on the post-order visit to the
 644          * directory p, and will be signaled in traverse().
 645          */
 646         if (list == NULL)
 647                 return;
 648
 649         needstats = f_inode || f_longform || f_size;
 650         btotal = 0;
 651         initmax = getenv("LS_COLWIDTHS");
 652         /* Fields match -lios order.  New ones should be added at the end. */
 653         maxlattr = maxblock = maxinode = maxlen = maxnlink =
 654             maxuser = maxgroup = maxflags = maxsize = 0;
 655         if (initmax != NULL && *initmax != '\0') {
 656                 char *initmax2, *jinitmax;
 657                 int ninitmax;
 658
 659                 /* Fill-in "::" as "0:0:0" for the sake of scanf. */
 660                 jinitmax = initmax2 = malloc(strlen(initmax) * 2 + 2);
 661                 if (jinitmax == NULL)
 662                         err(1, "malloc");
 663                 if (*initmax == ':')
 664                         strcpy(initmax2, "0:"), initmax2 += 2;
 665                 else
 666                         *initmax2++ = *initmax, *initmax2 = '\0';
 667                 for (initmax++; *initmax != '\0'; initmax++) {
 668                         if (initmax[-1] == ':' && initmax[0] == ':') {
 669                                 *initmax2++ = '0';
 670                                 *initmax2++ = initmax[0];
 671                                 initmax2[1] = '\0';
 672                         } else {
 673                                 *initmax2++ = initmax[0];
 674                                 initmax2[1] = '\0';
 675                         }
 676                 }
 677                 if (initmax2[-1] == ':')
 678                         strcpy(initmax2, "0");
 679
 680                 ninitmax = sscanf(jinitmax,
 681 #if _DARWIN_FEATURE_64_BIT_INODE
 682                     " %llu : %qu : %lu : %i : %i : %i : %qu : %lu : %lu ",
 683 #else
 684                     " %lu : %qu : %lu : %i : %i : %i : %qu : %lu : %lu ",
 685 #endif
 686                     &maxinode, &maxblock, &maxnlink, &maxuser,
 687                     &maxgroup, &maxflags, &maxsize, &maxlen, &maxlattr);
 688                 f_notabs = 1;
 689                 switch (ninitmax) {
 690                 case 0:
 691                         maxinode = 0;
 692                         /* FALLTHROUGH */
 693                 case 1:
 694                         maxblock = 0;
 695                         /* FALLTHROUGH */
 696                 case 2:
 697                         maxnlink = 0;
 698                         /* FALLTHROUGH */
 699                 case 3:
 700                         maxuser = 0;
 701                         /* FALLTHROUGH */
 702                 case 4:
 703                         maxgroup = 0;
 704                         /* FALLTHROUGH */
 705                 case 5:
 706                         maxflags = 0;
 707                         /* FALLTHROUGH */
 708                 case 6:
 709                         maxsize = 0;
 710                         /* FALLTHROUGH */
 711                 case 7:
 712                         maxlen = 0;
 713                         /* FALLTHROUGH */
 714                 case 8:
 715                         maxlattr = 0;
 716                         /* FALLTHROUGH */
 717 #ifdef COLORLS
 718                         if (!f_color)
 719 #endif
 720                                 f_notabs = 0;
 721                         /* FALLTHROUGH */
 722                 default:
 723                         break;
 724                 }
 725                 maxinode = makenines(maxinode);
 726                 maxblock = makenines(maxblock);
 727                 maxnlink = makenines(maxnlink);
 728                 maxsize = makenines(maxsize);
 729         }
 730         bcfile = 0;
 731         flags = NULL;
 732         for (cur = list, entries = 0; cur; cur = cur->fts_link) {
 733                 if (cur->fts_info == FTS_ERR || cur->fts_info == FTS_NS) {
 734                         warnx("%s: %s",
 735                             cur->fts_name, strerror(cur->fts_errno));
 736                         cur->fts_number = NO_PRINT;
 737                         rval = 1;
 738                         continue;
 739                 }
 740                 /*
 741                  * P is NULL if list is the argv list, to which different rules
 742                  * apply.
 743                  */
 744                 if (p == NULL) {
 745                         /* Directories will be displayed later. */
 746                         if (cur->fts_info == FTS_D && !f_listdir) {
 747                                 cur->fts_number = NO_PRINT;
 748                                 continue;
 749                         }
 750                 } else {
 751                         /* Only display dot file if -a/-A set. */
 752                         if (cur->fts_name[0] == '.' && !f_listdot) {
 753                                 cur->fts_number = NO_PRINT;
 754                                 continue;
 755                         }
 756                 }
 757                 if (cur->fts_namelen > maxlen)
 758                         maxlen = cur->fts_namelen;
 759                 if (f_octal || f_octal_escape) {
 760                         u_long t = len_octal(cur->fts_name, cur->fts_namelen);
 761
 762                         if (t > maxlen)
 763                                 maxlen = t;
 764                 }
 765                 if (needstats) {
 766                         sp = cur->fts_statp;
 767                         if (sp->st_blocks > maxblock)
 768                                 maxblock = sp->st_blocks;
 769                         if (sp->st_ino > maxinode)
 770                                 maxinode = sp->st_ino;
 771                         if (sp->st_nlink > maxnlink)
 772                                 maxnlink = sp->st_nlink;
 773                         if (sp->st_size > maxsize)
 774                                 maxsize = sp->st_size;
 775
 776                         btotal += sp->st_blocks;
 777                         if (f_longform) {
 778                                 if (f_numericonly) {
 779                                         (void)snprintf(nuser, sizeof(nuser),
 780                                             "%u", sp->st_uid);
 781                                         (void)snprintf(ngroup, sizeof(ngroup),
 782                                             "%u", sp->st_gid);
 783                                         user = nuser;
 784                                         group = ngroup;
 785                                 } else {
 786                                         user = user_from_uid(sp->st_uid, 0);
 787                                         group = group_from_gid(sp->st_gid, 0);
 788                                 }
 789                                 if ((ulen = strlen(user)) > maxuser)
 790                                         maxuser = ulen;
 791                                 if ((glen = strlen(group)) > maxgroup)
 792                                         maxgroup = glen;
 793                                 if (f_flags) {
 794                                         flags = fflagstostr(sp->st_flags);
 795                                         if (flags != NULL && *flags == '\0') {
 796                                                 free(flags);
 797                                                 flags = strdup("-");
 798                                         }
 799                                         if (flags == NULL)
 800                                                 err(1, "fflagstostr");
 801                                         flen = strlen(flags);
 802                                         if (flen > (size_t)maxflags)
 803                                                 maxflags = flen;
 804                                 } else
 805                                         flen = 0;
 806                                 lattr = NULL;
 807                                 lattrlen = 0;
 808
 809                                 if ((np = calloc(1, sizeof(NAMES) + lattrlen +
 810                                     ulen + glen + flen + 4)) == NULL)
 811                                         err(1, "malloc");
 812
 813                                 np->user = &np->data[0];
 814                                 (void)strcpy(np->user, user);
 815                                 np->group = &np->data[ulen + 1];
 816                                 (void)strcpy(np->group, group);
 817 #ifdef __APPLE__
 818                                 if (cur->fts_level == FTS_ROOTLEVEL) {
 819                                         filename = cur->fts_name;
 820                                 } else {
 821                                         snprintf(path, sizeof(path), "%s/%s", cur->fts_parent->fts_accpath, cur->fts_name);
 822                                         filename = path;
 823                                 }
 824                                 xattr_size = listxattr(filename, NULL, 0, XATTR_NOFOLLOW);
 825                                 if (xattr_size < 0) {
 826                                         xattr_size = 0;
 827                                 }
 828                                 if ((xattr_size > 0) && f_xattr) {
 829                                         /* collect sizes */
 830                                         np->xattr_names = malloc(xattr_size);
 831                                         listxattr(filename, np->xattr_names, xattr_size, XATTR_NOFOLLOW);
 832                                         for (char *name = np->xattr_names; name < np->xattr_names + xattr_size;
 833                                              name += strlen(name)+1) {
 834                                                 np->xattr_sizes = reallocf(np->xattr_sizes, (np->xattr_count+1) * sizeof(np->xattr_sizes[0]));
 835                                                 np->xattr_sizes[np->xattr_count] = getxattr(filename, name, 0, 0, 0, XATTR_NOFOLLOW);
 836                                                 np->xattr_count++;
 837                                         }
 838                                 }
 839                                 /* symlinks can not have ACLs */
 840                                 np->acl = acl_get_link_np(filename, ACL_TYPE_EXTENDED);
 841                                 if (np->acl) {
 842                                         if (acl_get_entry(np->acl, ACL_FIRST_ENTRY, &dummy) == -1) {
 843                                                 acl_free(np->acl);
 844                                                 np->acl = NULL;
 845                                         }
 846                                 }
 847                                 if (xattr_size > 0) {
 848                                         np->mode_suffix = '@';
 849                                 } else if (np->acl) {
 850                                         np->mode_suffix = '+';
 851                                 } else {
 852                                         np->mode_suffix = ' ';
 853                                 }
 854                                 if (f_dataless && (sp->st_flags & SF_DATALESS)) {
 855                                         np->mode_suffix = '%';
 856                                 }
 857                                 if (!f_acl) {
 858                                         acl_free(np->acl);
 859                                         np->acl = NULL;
 860                                 }
 861 #endif // __APPLE__
 862                                 if (S_ISCHR(sp->st_mode) ||
 863                                     S_ISBLK(sp->st_mode))
 864                                         bcfile = 1;
 865
 866                                 if (f_flags) {
 867                                         np->flags = &np->data[ulen + glen + 2];
 868                                         (void)strcpy(np->flags, flags);
 869                                         free(flags);
 870                                 }
 871                                 cur->fts_pointer = np;
 872                         }
 873                 }
 874                 ++entries;
 875         }
 876
 877         if (!entries)
 878                 return;
 879
 880         d.list = list;
 881         d.entries = entries;
 882         d.maxlen = maxlen;
 883         if (needstats) {
 884                 d.bcfile = bcfile;
 885                 d.btotal = btotal;
 886                 (void)snprintf(buf, sizeof(buf), "%qu", (u_int64_t)maxblock);
 887                 d.s_block = strlen(buf);
 888                 d.s_flags = maxflags;
 889                 d.s_lattr = maxlattr;
 890                 d.s_group = maxgroup;
 891 #if _DARWIN_FEATURE_64_BIT_INODE
 892                 (void)snprintf(buf, sizeof(buf), "%llu", maxinode);
 893 #else
 894                 (void)snprintf(buf, sizeof(buf), "%lu", maxinode);
 895 #endif
 896                 d.s_inode = strlen(buf);
 897                 (void)snprintf(buf, sizeof(buf), "%lu", maxnlink);
 898                 d.s_nlink = strlen(buf);
 899                 (void)snprintf(buf, sizeof(buf), "%qu", (u_int64_t)maxsize);
 900                 d.s_size = strlen(buf);
 901                 d.s_user = maxuser;
 902         }
 903         printfcn(&d);
 904         output = 1;
 905
 906         if (f_longform) {
 907                 for (cur = list; cur; cur = cur->fts_link) {
 908                         np = cur->fts_pointer;
 909                         if (np) {
 910                                 if (np->acl) {
 911                                         acl_free(np->acl);
 912                                 }
 913                                 free(np->xattr_names);
 914                                 free(np->xattr_sizes);
 915                                 free(np);
 916                                 cur->fts_pointer = NULL;
 917                         }
 918                 }
 919         }
 920 }
 921
 922 /*
 923  * Ordering for mastercmp:
 924  * If ordering the argv (fts_level = FTS_ROOTLEVEL) return non-directories
 925  * as larger than directories.  Within either group, use the sort function.
 926  * All other levels use the sort function.  Error entries remain unsorted.
 927  */
 928 static int
 929 mastercmp(const FTSENT **a, const FTSENT **b)
 930 {
 931         int a_info, b_info;
 932
 933         a_info = (*a)->fts_info;
 934         if (a_info == FTS_ERR)
 935                 return (0);
 936         b_info = (*b)->fts_info;
 937         if (b_info == FTS_ERR)
 938                 return (0);
 939
 940         if (a_info == FTS_NS || b_info == FTS_NS)
 941                 return (namecmp(*a, *b));
 942
 943         if (a_info != b_info &&
 944             (*a)->fts_level == FTS_ROOTLEVEL && !f_listdir) {
 945                 if (a_info == FTS_D)
 946                         return (1);
 947                 if (b_info == FTS_D)
 948                         return (-1);
 949         }
 950         return (sortfcn(*a, *b));
 951 }
 952
 953 /*
 954  * Makenines() returns (10**n)-1.  This is useful for converting a width
 955  * into a number that wide in decimal.
 956  */
 957 static u_quad_t
 958 makenines(u_quad_t n)
 959 {
 960         u_long i;
 961         u_quad_t reg;
 962
 963         reg = 1;
 964         /* Use a loop instead of pow(), since all values of n are small. */
 965         for (i = 0; i < n; i++)
 966                 reg *= 10;
 967         reg--;
 968
 969         return reg;
 970 }