1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1989, 1993, 1994 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Michael Fischbein. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 #ifndef lint 36 static const char copyright[] = 37 "@(#) Copyright (c) 1989, 1993, 1994\n\ 38 The Regents of the University of California. All rights reserved.\n"; 39 #endif /* not lint */ 40 41 #if 0 42 #ifndef lint 43 static char sccsid[] = "@(#)ls.c 8.5 (Berkeley) 4/2/94"; 44 #endif /* not lint */ 45 #endif 46 #include <sys/cdefs.h> 47 #include <sys/param.h> 48 #include <sys/stat.h> 49 #include <sys/ioctl.h> 50 #include <sys/mac.h> 51 52 #include <ctype.h> 53 #include <dirent.h> 54 #include <err.h> 55 #include <errno.h> 56 #include <fts.h> 57 #include <getopt.h> 58 #include <grp.h> 59 #include <inttypes.h> 60 #include <limits.h> 61 #include <locale.h> 62 #include <pwd.h> 63 #include <stdbool.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 73 #include "ls.h" 74 #include "extern.h" 75 76 /* 77 * Upward approximation of the maximum number of characters needed to 78 * represent a value of integral type t as a string, excluding the 79 * NUL terminator, with provision for a sign. 80 */ 81 #define STRBUF_SIZEOF(t) (1 + CHAR_BIT * sizeof(t) / 3 + 1) 82 83 /* 84 * MAKENINES(n) turns n into (10**n)-1. This is useful for converting a width 85 * into a number that wide in decimal. 86 * XXX: Overflows are not considered. 87 */ 88 #define MAKENINES(n) \ 89 do { \ 90 intmax_t __i; \ 91 \ 92 /* Use a loop as all values of n are small. */ \ 93 for (__i = 1; n > 0; __i *= 10) \ 94 n--; \ 95 n = __i - 1; \ 96 } while(0) 97 98 static void display(const FTSENT *, FTSENT *, int); 99 static int mastercmp(const FTSENT * const *, const FTSENT * const *); 100 static void traverse(int, char **, int); 101 102 #define COLOR_OPT (CHAR_MAX + 1) 103 104 static const struct option long_opts[] = 105 { 106 {"color", optional_argument, NULL, COLOR_OPT}, 107 {NULL, no_argument, NULL, 0} 108 }; 109 110 static void (*printfcn)(const DISPLAY *); 111 static int (*sortfcn)(const FTSENT *, const FTSENT *); 112 113 long blocksize; /* block size units */ 114 int termwidth = 80; /* default terminal width */ 115 116 /* flags */ 117 int f_accesstime; /* use time of last access */ 118 int f_birthtime; /* use time of birth */ 119 int f_flags; /* show flags associated with a file */ 120 int f_humanval; /* show human-readable file sizes */ 121 int f_inode; /* print inode */ 122 static int f_kblocks; /* print size in kilobytes */ 123 int f_label; /* show MAC label */ 124 static int f_listdir; /* list actual directory, not contents */ 125 static int f_listdot; /* list files beginning with . */ 126 int f_longform; /* long listing format */ 127 static int f_noautodot; /* do not automatically enable -A for root */ 128 static int f_nofollow; /* don't follow symbolic link arguments */ 129 int f_nonprint; /* show unprintables as ? */ 130 static int f_nosort; /* don't sort output */ 131 int f_notabs; /* don't use tab-separated multi-col output */ 132 static int f_numericonly; /* don't convert uid/gid to name */ 133 int f_octal; /* show unprintables as \xxx */ 134 int f_octal_escape; /* like f_octal but use C escapes if possible */ 135 static int f_recursive; /* ls subdirectories also */ 136 static int f_reversesort; /* reverse whatever sort is used */ 137 static int f_verssort; /* sort names using strverscmp(3) rather than strcoll(3) */ 138 int f_samesort; /* sort time and name in same direction */ 139 int f_sectime; /* print full time information */ 140 static int f_singlecol; /* use single column output */ 141 int f_size; /* list size in short listing */ 142 static int f_sizesort; 143 int f_slash; /* similar to f_type, but only for dirs */ 144 int f_sortacross; /* sort across rows, not down columns */ 145 int f_sowner; /* disable showing owner's name */ 146 int f_statustime; /* use time of last mode change */ 147 static int f_stream; /* stream the output, separate with commas */ 148 int f_thousands; /* show file sizes with thousands separators */ 149 char *f_timeformat; /* user-specified time format */ 150 static int f_timesort; /* sort by time vice name */ 151 int f_type; /* add type character for non-regular files */ 152 static int f_whiteout; /* show whiteout entries */ 153 #ifdef COLORLS 154 int colorflag = COLORFLAG_NEVER; /* passed in colorflag */ 155 int f_color; /* add type in color for non-regular files */ 156 bool explicitansi; /* Explicit ANSI sequences, no termcap(5) */ 157 char *ansi_bgcol; /* ANSI sequence to set background colour */ 158 char *ansi_fgcol; /* ANSI sequence to set foreground colour */ 159 char *ansi_coloff; /* ANSI sequence to reset colours */ 160 char *attrs_off; /* ANSI sequence to turn off attributes */ 161 char *enter_bold; /* ANSI sequence to set color to bold mode */ 162 char *enter_underline; /* ANSI sequence to enter underline mode */ 163 #endif 164 165 static int rval; 166 167 static bool 168 do_color_from_env(void) 169 { 170 const char *p; 171 bool doit; 172 173 doit = false; 174 p = getenv("CLICOLOR"); 175 if (p == NULL) { 176 /* 177 * COLORTERM is the more standard name for this variable. We'll 178 * honor it as long as it's both set and not empty. 179 */ 180 p = getenv("COLORTERM"); 181 if (p != NULL && *p != '\0') 182 doit = true; 183 } else 184 doit = true; 185 186 return (doit && 187 (isatty(STDOUT_FILENO) || getenv("CLICOLOR_FORCE"))); 188 } 189 190 static bool 191 do_color(void) 192 { 193 194 #ifdef COLORLS 195 if (colorflag == COLORFLAG_NEVER) 196 return (false); 197 else if (colorflag == COLORFLAG_ALWAYS) 198 return (true); 199 #endif 200 return (do_color_from_env()); 201 } 202 203 #ifdef COLORLS 204 static bool 205 do_color_always(const char *term) 206 { 207 208 return (strcmp(term, "always") == 0 || strcmp(term, "yes") == 0 || 209 strcmp(term, "force") == 0); 210 } 211 212 static bool 213 do_color_never(const char *term) 214 { 215 216 return (strcmp(term, "never") == 0 || strcmp(term, "no") == 0 || 217 strcmp(term, "none") == 0); 218 } 219 220 static bool 221 do_color_auto(const char *term) 222 { 223 224 return (strcmp(term, "auto") == 0 || strcmp(term, "tty") == 0 || 225 strcmp(term, "if-tty") == 0); 226 } 227 #endif /* COLORLS */ 228 229 int 230 main(int argc, char *argv[]) 231 { 232 static char dot[] = ".", *dotav[] = {dot, NULL}; 233 struct winsize win; 234 int ch, fts_options, notused; 235 char *p; 236 const char *errstr = NULL; 237 #ifdef COLORLS 238 char termcapbuf[1024]; /* termcap definition buffer */ 239 char tcapbuf[512]; /* capability buffer */ 240 char *bp = tcapbuf, *term; 241 #endif 242 243 (void)setlocale(LC_ALL, ""); 244 245 /* Terminal defaults to -Cq, non-terminal defaults to -1. */ 246 if (isatty(STDOUT_FILENO)) { 247 termwidth = 80; 248 if ((p = getenv("COLUMNS")) != NULL && *p != '\0') 249 termwidth = strtonum(p, 0, INT_MAX, &errstr); 250 else if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &win) != -1 && 251 win.ws_col > 0) 252 termwidth = win.ws_col; 253 f_nonprint = 1; 254 } else { 255 f_singlecol = 1; 256 /* retrieve environment variable, in case of explicit -C */ 257 p = getenv("COLUMNS"); 258 if (p) 259 termwidth = strtonum(p, 0, INT_MAX, &errstr); 260 } 261 262 if (errstr) 263 termwidth = 80; 264 265 fts_options = FTS_PHYSICAL; 266 if (getenv("LS_SAMESORT")) 267 f_samesort = 1; 268 269 /* 270 * For historical compatibility, we'll use our autodetection if CLICOLOR 271 * is set. 272 */ 273 #ifdef COLORLS 274 if (getenv("CLICOLOR")) 275 colorflag = COLORFLAG_AUTO; 276 #endif 277 while ((ch = getopt_long(argc, argv, 278 "+1ABCD:FGHILPRSTUWXZabcdfghiklmnopqrstuvwxy,", long_opts, 279 NULL)) != -1) { 280 switch (ch) { 281 /* 282 * The -1, -C, -x and -l options all override each other so 283 * shell aliasing works right. 284 */ 285 case '1': 286 f_singlecol = 1; 287 f_longform = 0; 288 f_stream = 0; 289 break; 290 case 'C': 291 f_sortacross = f_longform = f_singlecol = 0; 292 break; 293 case 'l': 294 f_longform = 1; 295 f_singlecol = 0; 296 f_stream = 0; 297 break; 298 case 'x': 299 f_sortacross = 1; 300 f_longform = 0; 301 f_singlecol = 0; 302 break; 303 /* The -c, -u, and -U options override each other. */ 304 case 'c': 305 f_statustime = 1; 306 f_accesstime = 0; 307 f_birthtime = 0; 308 break; 309 case 'u': 310 f_accesstime = 1; 311 f_statustime = 0; 312 f_birthtime = 0; 313 break; 314 case 'U': 315 f_birthtime = 1; 316 f_accesstime = 0; 317 f_statustime = 0; 318 break; 319 case 'f': 320 f_nosort = 1; 321 /* FALLTHROUGH */ 322 case 'a': 323 fts_options |= FTS_SEEDOT; 324 /* FALLTHROUGH */ 325 case 'A': 326 f_listdot = 1; 327 break; 328 /* The -S, -t and -v options override each other. */ 329 case 'S': 330 f_sizesort = 1; 331 f_timesort = 0; 332 f_verssort = 0; 333 break; 334 case 't': 335 f_timesort = 1; 336 f_sizesort = 0; 337 f_verssort = 0; 338 break; 339 case 'v': 340 f_verssort = 1; 341 f_sizesort = 0; 342 f_timesort = 0; 343 break; 344 /* Other flags. Please keep alphabetic. */ 345 case ',': 346 f_thousands = 1; 347 break; 348 case 'B': 349 f_nonprint = 0; 350 f_octal = 1; 351 f_octal_escape = 0; 352 break; 353 case 'D': 354 f_timeformat = optarg; 355 break; 356 case 'F': 357 f_type = 1; 358 f_slash = 0; 359 break; 360 case 'G': 361 /* 362 * We both set CLICOLOR here and set colorflag to 363 * COLORFLAG_AUTO, because -G should not force color if 364 * stdout isn't a tty. 365 */ 366 setenv("CLICOLOR", "", 1); 367 #ifdef COLORLS 368 colorflag = COLORFLAG_AUTO; 369 #endif 370 break; 371 case 'H': 372 fts_options |= FTS_COMFOLLOW; 373 f_nofollow = 0; 374 break; 375 case 'I': 376 f_noautodot = 1; 377 break; 378 case 'L': 379 fts_options &= ~FTS_PHYSICAL; 380 fts_options |= FTS_LOGICAL; 381 f_nofollow = 0; 382 break; 383 case 'P': 384 fts_options &= ~FTS_COMFOLLOW; 385 fts_options &= ~FTS_LOGICAL; 386 fts_options |= FTS_PHYSICAL; 387 f_nofollow = 1; 388 break; 389 case 'R': 390 f_recursive = 1; 391 break; 392 case 'T': 393 f_sectime = 1; 394 break; 395 case 'W': 396 f_whiteout = 1; 397 break; 398 case 'Z': 399 f_label = 1; 400 break; 401 case 'b': 402 f_nonprint = 0; 403 f_octal = 0; 404 f_octal_escape = 1; 405 break; 406 /* The -d option turns off the -R option. */ 407 case 'd': 408 f_listdir = 1; 409 f_recursive = 0; 410 break; 411 case 'g': 412 f_longform = 1; 413 f_singlecol = 0; 414 f_stream = 0; 415 f_sowner = 1; 416 break; 417 case 'h': 418 f_humanval = 1; 419 break; 420 case 'i': 421 f_inode = 1; 422 break; 423 case 'k': 424 f_humanval = 0; 425 f_kblocks = 1; 426 break; 427 case 'm': 428 f_stream = 1; 429 f_singlecol = 0; 430 f_longform = 0; 431 break; 432 case 'n': 433 f_numericonly = 1; 434 f_longform = 1; 435 f_singlecol = 0; 436 f_stream = 0; 437 break; 438 case 'o': 439 f_flags = 1; 440 break; 441 case 'p': 442 f_slash = 1; 443 f_type = 1; 444 break; 445 case 'q': 446 f_nonprint = 1; 447 f_octal = 0; 448 f_octal_escape = 0; 449 break; 450 case 'r': 451 f_reversesort = 1; 452 break; 453 case 's': 454 f_size = 1; 455 break; 456 case 'w': 457 f_nonprint = 0; 458 f_octal = 0; 459 f_octal_escape = 0; 460 break; 461 case 'y': 462 f_samesort = 1; 463 break; 464 case COLOR_OPT: 465 #ifdef COLORLS 466 if (optarg == NULL || do_color_always(optarg)) 467 colorflag = COLORFLAG_ALWAYS; 468 else if (do_color_auto(optarg)) 469 colorflag = COLORFLAG_AUTO; 470 else if (do_color_never(optarg)) 471 colorflag = COLORFLAG_NEVER; 472 else 473 errx(2, "unsupported --color value '%s' (must be always, auto, or never)", 474 optarg); 475 break; 476 #else 477 warnx("color support not compiled in"); 478 #endif 479 default: 480 case '?': 481 usage(); 482 } 483 } 484 argc -= optind; 485 argv += optind; 486 487 /* Root is -A automatically unless -I. */ 488 if (!f_listdot && getuid() == (uid_t)0 && !f_noautodot) 489 f_listdot = 1; 490 491 /* 492 * Enabling of colours is conditional on the environment in conjunction 493 * with the --color and -G arguments, if supplied. 494 */ 495 if (do_color()) { 496 #ifdef COLORLS 497 if ((term = getenv("TERM")) != NULL && 498 tgetent(termcapbuf, term) == 1) { 499 ansi_fgcol = tgetstr("AF", &bp); 500 ansi_bgcol = tgetstr("AB", &bp); 501 attrs_off = tgetstr("me", &bp); 502 enter_bold = tgetstr("md", &bp); 503 enter_underline = tgetstr("us", &bp); 504 505 /* To switch colours off use 'op' if 506 * available, otherwise use 'oc', or 507 * don't do colours at all. */ 508 ansi_coloff = tgetstr("op", &bp); 509 if (!ansi_coloff) 510 ansi_coloff = tgetstr("oc", &bp); 511 if (ansi_fgcol && ansi_bgcol && ansi_coloff) 512 f_color = 1; 513 } else if (colorflag == COLORFLAG_ALWAYS) { 514 /* 515 * If we're *always* doing color but we don't have 516 * a functional TERM supplied, we'll fallback to 517 * outputting raw ANSI sequences. 518 */ 519 f_color = 1; 520 explicitansi = true; 521 } 522 #endif /*COLORLS*/ 523 } 524 525 #ifdef COLORLS 526 if (f_color) { 527 /* 528 * We can't put tabs and color sequences together: 529 * column number will be incremented incorrectly 530 * for "stty oxtabs" mode. 531 */ 532 f_notabs = 1; 533 (void)signal(SIGINT, colorquit); 534 (void)signal(SIGQUIT, colorquit); 535 parsecolors(getenv("LSCOLORS")); 536 } 537 #endif 538 539 /* 540 * If not -F, -i, -l, -s, -S or -t options, don't require stat 541 * information, unless in color mode in which case we do 542 * need this to determine which colors to display. 543 */ 544 if (!f_inode && !f_longform && !f_size && !f_timesort && 545 !f_sizesort && !f_type 546 #ifdef COLORLS 547 && !f_color 548 #endif 549 ) 550 fts_options |= FTS_NOSTAT; 551 552 /* 553 * If not -F, -P, -d or -l options, follow any symbolic links listed on 554 * the command line, unless in color mode in which case we need to 555 * distinguish file type for a symbolic link itself and its target. 556 */ 557 if (!f_nofollow && !f_longform && !f_listdir && (!f_type || f_slash) 558 #ifdef COLORLS 559 && !f_color 560 #endif 561 ) 562 fts_options |= FTS_COMFOLLOW; 563 564 /* 565 * If -W, show whiteout entries 566 */ 567 #ifdef FTS_WHITEOUT 568 if (f_whiteout) 569 fts_options |= FTS_WHITEOUT; 570 #endif 571 572 /* If -i, -l or -s, figure out block size. */ 573 if (f_inode || f_longform || f_size) { 574 if (f_kblocks) 575 blocksize = 2; 576 else { 577 (void)getbsize(¬used, &blocksize); 578 blocksize /= 512; 579 } 580 } 581 582 /* Select a sort function. */ 583 if (f_reversesort) { 584 if (f_sizesort) 585 sortfcn = revsizecmp; 586 else if (f_verssort) 587 sortfcn = revverscmp; 588 else if (!f_timesort) 589 sortfcn = revnamecmp; 590 else if (f_accesstime) 591 sortfcn = revacccmp; 592 else if (f_birthtime) 593 sortfcn = revbirthcmp; 594 else if (f_statustime) 595 sortfcn = revstatcmp; 596 else /* Use modification time. */ 597 sortfcn = revmodcmp; 598 } else { 599 if (f_sizesort) 600 sortfcn = sizecmp; 601 else if (f_verssort) 602 sortfcn = verscmp; 603 else if (!f_timesort) 604 sortfcn = namecmp; 605 else if (f_accesstime) 606 sortfcn = acccmp; 607 else if (f_birthtime) 608 sortfcn = birthcmp; 609 else if (f_statustime) 610 sortfcn = statcmp; 611 else /* Use modification time. */ 612 sortfcn = modcmp; 613 } 614 615 /* Select a print function. */ 616 if (f_singlecol) 617 printfcn = printscol; 618 else if (f_longform) 619 printfcn = printlong; 620 else if (f_stream) 621 printfcn = printstream; 622 else 623 printfcn = printcol; 624 625 if (argc) 626 traverse(argc, argv, fts_options); 627 else 628 traverse(1, dotav, fts_options); 629 exit(rval); 630 } 631 632 static int output; /* If anything output. */ 633 634 /* 635 * Traverse() walks the logical directory structure specified by the argv list 636 * in the order specified by the mastercmp() comparison function. During the 637 * traversal it passes linked lists of structures to display() which represent 638 * a superset (may be exact set) of the files to be displayed. 639 */ 640 static void 641 traverse(int argc, char *argv[], int options) 642 { 643 FTS *ftsp; 644 FTSENT *p, *chp; 645 int ch_options; 646 647 if ((ftsp = 648 fts_open(argv, options, f_nosort ? NULL : mastercmp)) == NULL) 649 err(1, "fts_open"); 650 651 /* 652 * We ignore errors from fts_children here since they will be 653 * replicated and signalled on the next call to fts_read() below. 654 */ 655 chp = fts_children(ftsp, 0); 656 if (chp != NULL) 657 display(NULL, chp, options); 658 if (f_listdir) 659 return; 660 661 /* 662 * If not recursing down this tree and don't need stat info, just get 663 * the names. 664 */ 665 ch_options = !f_recursive && !f_label && 666 options & FTS_NOSTAT ? FTS_NAMEONLY : 0; 667 668 while (errno = 0, (p = fts_read(ftsp)) != NULL) 669 switch (p->fts_info) { 670 case FTS_DC: 671 warnx("%s: directory causes a cycle", p->fts_name); 672 break; 673 case FTS_DNR: 674 case FTS_ERR: 675 warnx("%s: %s", p->fts_path, strerror(p->fts_errno)); 676 rval = 1; 677 break; 678 case FTS_D: 679 if (p->fts_level != FTS_ROOTLEVEL && 680 p->fts_name[0] == '.' && !f_listdot) 681 break; 682 683 /* 684 * If already output something, put out a newline as 685 * a separator. If multiple arguments, precede each 686 * directory with its name. 687 */ 688 if (output) { 689 putchar('\n'); 690 (void)printname(p->fts_path); 691 puts(":"); 692 } else if (argc > 1) { 693 (void)printname(p->fts_path); 694 puts(":"); 695 output = 1; 696 } 697 chp = fts_children(ftsp, ch_options); 698 display(p, chp, options); 699 700 if (!f_recursive && chp != NULL) 701 (void)fts_set(ftsp, p, FTS_SKIP); 702 break; 703 default: 704 break; 705 } 706 if (errno) 707 err(1, "fts_read"); 708 } 709 710 /* 711 * Display() takes a linked list of FTSENT structures and passes the list 712 * along with any other necessary information to the print function. P 713 * points to the parent directory of the display list. 714 */ 715 static void 716 display(const FTSENT *p, FTSENT *list, int options) 717 { 718 struct stat *sp; 719 DISPLAY d; 720 FTSENT *cur; 721 NAMES *np; 722 off_t maxsize; 723 long maxblock; 724 uintmax_t maxinode; 725 u_long btotal, labelstrlen, maxlen, maxnlink; 726 u_long maxlabelstr; 727 u_int sizelen; 728 int maxflags; 729 gid_t maxgroup; 730 uid_t maxuser; 731 size_t flen, ulen, glen; 732 char *initmax; 733 int entries, needstats; 734 const char *user, *group; 735 char *flags, *labelstr = NULL; 736 char ngroup[STRBUF_SIZEOF(uid_t) + 1]; 737 char nuser[STRBUF_SIZEOF(gid_t) + 1]; 738 u_long width[9]; 739 int i; 740 741 needstats = f_inode || f_longform || f_size; 742 flen = 0; 743 btotal = 0; 744 745 #define LS_COLWIDTHS_FIELDS 9 746 initmax = getenv("LS_COLWIDTHS"); 747 748 for (i = 0 ; i < LS_COLWIDTHS_FIELDS; i++) 749 width[i] = 0; 750 751 if (initmax != NULL) { 752 char *endp; 753 754 for (i = 0; i < LS_COLWIDTHS_FIELDS && *initmax != '\0'; i++) { 755 if (*initmax == ':') { 756 width[i] = 0; 757 } else { 758 width[i] = strtoul(initmax, &endp, 10); 759 initmax = endp; 760 while (isspace(*initmax)) 761 initmax++; 762 if (*initmax != ':') 763 break; 764 initmax++; 765 } 766 } 767 if (i < LS_COLWIDTHS_FIELDS) 768 #ifdef COLORLS 769 if (!f_color) 770 #endif 771 f_notabs = 0; 772 } 773 774 /* Fields match -lios order. New ones should be added at the end. */ 775 maxinode = width[0]; 776 maxblock = width[1]; 777 maxnlink = width[2]; 778 maxuser = width[3]; 779 maxgroup = width[4]; 780 maxflags = width[5]; 781 maxsize = width[6]; 782 maxlen = width[7]; 783 maxlabelstr = width[8]; 784 785 MAKENINES(maxinode); 786 MAKENINES(maxblock); 787 MAKENINES(maxnlink); 788 MAKENINES(maxsize); 789 790 d.s_size = 0; 791 sizelen = 0; 792 flags = NULL; 793 for (cur = list, entries = 0; cur; cur = cur->fts_link) { 794 if (cur->fts_info == FTS_ERR || cur->fts_info == FTS_NS) { 795 warnx("%s: %s", 796 cur->fts_name, strerror(cur->fts_errno)); 797 cur->fts_number = NO_PRINT; 798 rval = 1; 799 continue; 800 } 801 /* 802 * P is NULL if list is the argv list, to which different rules 803 * apply. 804 */ 805 if (p == NULL) { 806 /* Directories will be displayed later. */ 807 if (cur->fts_info == FTS_D && !f_listdir) { 808 cur->fts_number = NO_PRINT; 809 continue; 810 } 811 } else { 812 /* Only display dot file if -a/-A set. */ 813 if (cur->fts_name[0] == '.' && !f_listdot) { 814 cur->fts_number = NO_PRINT; 815 continue; 816 } 817 } 818 if (cur->fts_namelen > maxlen) 819 maxlen = cur->fts_namelen; 820 if (f_octal || f_octal_escape) { 821 u_long t = len_octal(cur->fts_name, cur->fts_namelen); 822 823 if (t > maxlen) 824 maxlen = t; 825 } 826 if (needstats) { 827 sp = cur->fts_statp; 828 if (sp->st_blocks > maxblock) 829 maxblock = sp->st_blocks; 830 if (sp->st_ino > maxinode) 831 maxinode = sp->st_ino; 832 if (sp->st_nlink > maxnlink) 833 maxnlink = sp->st_nlink; 834 if (sp->st_size > maxsize) 835 maxsize = sp->st_size; 836 837 btotal += sp->st_blocks; 838 if (f_longform) { 839 if (f_numericonly) { 840 (void)snprintf(nuser, sizeof(nuser), 841 "%u", sp->st_uid); 842 (void)snprintf(ngroup, sizeof(ngroup), 843 "%u", sp->st_gid); 844 user = nuser; 845 group = ngroup; 846 } else { 847 user = user_from_uid(sp->st_uid, 0); 848 /* 849 * user_from_uid(..., 0) only returns 850 * NULL in OOM conditions. We could 851 * format the uid here, but (1) in 852 * general ls(1) exits on OOM, and (2) 853 * there is another allocation/exit 854 * path directly below, which will 855 * likely exit anyway. 856 */ 857 if (user == NULL) 858 err(1, "user_from_uid"); 859 group = group_from_gid(sp->st_gid, 0); 860 /* Ditto. */ 861 if (group == NULL) 862 err(1, "group_from_gid"); 863 } 864 if ((ulen = strlen(user)) > maxuser) 865 maxuser = ulen; 866 if ((glen = strlen(group)) > maxgroup) 867 maxgroup = glen; 868 if (f_flags) { 869 flags = fflagstostr(sp->st_flags); 870 if (flags != NULL && *flags == '\0') { 871 free(flags); 872 flags = strdup("-"); 873 } 874 if (flags == NULL) 875 err(1, "fflagstostr"); 876 flen = strlen(flags); 877 if (flen > (size_t)maxflags) 878 maxflags = flen; 879 } else 880 flen = 0; 881 labelstr = NULL; 882 if (f_label) { 883 char name[PATH_MAX + 1]; 884 mac_t label; 885 int error; 886 887 error = mac_prepare_file_label(&label); 888 if (error == -1) { 889 warn("MAC label for %s/%s", 890 cur->fts_parent->fts_path, 891 cur->fts_name); 892 goto label_out; 893 } 894 895 if (cur->fts_level == FTS_ROOTLEVEL) 896 snprintf(name, sizeof(name), 897 "%s", cur->fts_name); 898 else 899 snprintf(name, sizeof(name), 900 "%s/%s", cur->fts_parent-> 901 fts_accpath, cur->fts_name); 902 903 if (options & FTS_LOGICAL) 904 error = mac_get_file(name, 905 label); 906 else 907 error = mac_get_link(name, 908 label); 909 if (error == -1) { 910 warn("MAC label for %s/%s", 911 cur->fts_parent->fts_path, 912 cur->fts_name); 913 mac_free(label); 914 goto label_out; 915 } 916 917 error = mac_to_text(label, 918 &labelstr); 919 if (error == -1) { 920 warn("MAC label for %s/%s", 921 cur->fts_parent->fts_path, 922 cur->fts_name); 923 mac_free(label); 924 goto label_out; 925 } 926 mac_free(label); 927 label_out: 928 if (labelstr == NULL) 929 labelstr = strdup("-"); 930 labelstrlen = strlen(labelstr); 931 if (labelstrlen > maxlabelstr) 932 maxlabelstr = labelstrlen; 933 } else 934 labelstrlen = 0; 935 936 if ((np = malloc(sizeof(NAMES) + labelstrlen + 937 ulen + glen + flen + 4)) == NULL) 938 err(1, "malloc"); 939 940 np->user = &np->data[0]; 941 (void)strcpy(np->user, user); 942 np->group = &np->data[ulen + 1]; 943 (void)strcpy(np->group, group); 944 945 if (S_ISCHR(sp->st_mode) || 946 S_ISBLK(sp->st_mode)) { 947 sizelen = snprintf(NULL, 0, 948 "%#jx", (uintmax_t)sp->st_rdev); 949 if (d.s_size < sizelen) 950 d.s_size = sizelen; 951 } 952 953 if (f_flags) { 954 np->flags = &np->data[ulen + glen + 2]; 955 (void)strcpy(np->flags, flags); 956 free(flags); 957 } 958 if (f_label) { 959 np->label = &np->data[ulen + glen + 2 960 + (f_flags ? flen + 1 : 0)]; 961 (void)strcpy(np->label, labelstr); 962 free(labelstr); 963 } 964 cur->fts_pointer = np; 965 } 966 } 967 ++entries; 968 } 969 970 /* 971 * If there are no entries to display, we normally stop right 972 * here. However, we must continue if we have to display the 973 * total block count. In this case, we display the total only 974 * on the second (p != NULL) pass. 975 */ 976 if (!entries && (!(f_longform || f_size) || p == NULL)) 977 return; 978 979 d.list = list; 980 d.entries = entries; 981 d.maxlen = maxlen; 982 if (needstats) { 983 d.btotal = btotal; 984 d.s_block = snprintf(NULL, 0, f_thousands ? "%'ld" : "%ld", 985 howmany(maxblock, blocksize)); 986 d.s_flags = maxflags; 987 d.s_label = maxlabelstr; 988 d.s_group = maxgroup; 989 d.s_inode = snprintf(NULL, 0, "%ju", maxinode); 990 d.s_nlink = snprintf(NULL, 0, "%lu", maxnlink); 991 sizelen = f_humanval ? HUMANVALSTR_LEN : 992 snprintf(NULL, 0, "%ju", maxsize); 993 if (d.s_size < sizelen) 994 d.s_size = sizelen; 995 d.s_user = maxuser; 996 } 997 if (f_thousands) /* make space for commas */ 998 d.s_size += (d.s_size - 1) / 3; 999 printfcn(&d); 1000 output = 1; 1001 1002 if (f_longform) 1003 for (cur = list; cur; cur = cur->fts_link) 1004 free(cur->fts_pointer); 1005 } 1006 1007 /* 1008 * Ordering for mastercmp: 1009 * If ordering the argv (fts_level = FTS_ROOTLEVEL) return non-directories 1010 * as larger than directories. Within either group, use the sort function. 1011 * All other levels use the sort function. Error entries remain unsorted. 1012 */ 1013 static int 1014 mastercmp(const FTSENT * const *a, const FTSENT * const *b) 1015 { 1016 int a_info, b_info; 1017 1018 a_info = (*a)->fts_info; 1019 if (a_info == FTS_ERR) 1020 return (0); 1021 b_info = (*b)->fts_info; 1022 if (b_info == FTS_ERR) 1023 return (0); 1024 1025 if (a_info == FTS_NS || b_info == FTS_NS) 1026 return (namecmp(*a, *b)); 1027 1028 if (a_info != b_info && 1029 (*a)->fts_level == FTS_ROOTLEVEL && !f_listdir) { 1030 if (a_info == FTS_D) 1031 return (1); 1032 if (b_info == FTS_D) 1033 return (-1); 1034 } 1035 return (sortfcn(*a, *b)); 1036 } 1037