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 #ifndef lint 38 static const char copyright[] = 39 "@(#) Copyright (c) 1989, 1993, 1994\n\ 40 The Regents of the University of California. All rights reserved.\n"; 41 #endif /* not lint */ 42 43 #ifndef lint 44 #if 0 45 static char sccsid[] = "@(#)ls.c 8.5 (Berkeley) 4/2/94"; 46 #else 47 static const char rcsid[] = 48 "$FreeBSD$"; 49 #endif 50 #endif /* not lint */ 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 <limits.h> 61 #include <locale.h> 62 #include <stdio.h> 63 #include <stdlib.h> 64 #include <string.h> 65 #include <unistd.h> 66 #ifdef COLORLS 67 #include <termcap.h> 68 #include <signal.h> 69 #endif 70 71 #include "ls.h" 72 #include "extern.h" 73 #include "lomac.h" 74 75 /* 76 * Upward approximation of the maximum number of characters needed to 77 * represent a value of integral type t as a string, excluding the 78 * NUL terminator, with provision for a sign. 79 */ 80 #define STRBUF_SIZEOF(t) (1 + CHAR_BIT * sizeof(t) / 3 + 1) 81 82 static void display __P((FTSENT *, FTSENT *)); 83 static u_quad_t makenines __P((u_long)); 84 static int mastercmp __P((const FTSENT **, const FTSENT **)); 85 static void traverse __P((int, char **, int)); 86 87 static void (*printfcn) __P((DISPLAY *)); 88 static int (*sortfcn) __P((const FTSENT *, const FTSENT *)); 89 90 long blocksize; /* block size units */ 91 int termwidth = 80; /* default terminal width */ 92 93 /* flags */ 94 int f_accesstime; /* use time of last access */ 95 int f_column; /* columnated format */ 96 int f_flags; /* show flags associated with a file */ 97 int f_humanval; /* show human-readable file sizes */ 98 int f_inode; /* print inode */ 99 int f_kblocks; /* print size in kilobytes */ 100 int f_listdir; /* list actual directory, not contents */ 101 int f_listdot; /* list files beginning with . */ 102 int f_longform; /* long listing format */ 103 int f_nonprint; /* show unprintables as ? */ 104 int f_nosort; /* don't sort output */ 105 int f_notabs; /* don't use tab-separated multi-col output */ 106 int f_numericonly; /* don't convert uid/gid to name */ 107 int f_octal; /* show unprintables as \xxx */ 108 int f_octal_escape; /* like f_octal but use C escapes if possible */ 109 int f_recursive; /* ls subdirectories also */ 110 int f_reversesort; /* reverse whatever sort is used */ 111 int f_sectime; /* print the real time for all files */ 112 int f_singlecol; /* use single column output */ 113 int f_size; /* list size in short listing */ 114 int f_statustime; /* use time of last mode change */ 115 int f_timesort; /* sort by time vice name */ 116 int f_type; /* add type character for non-regular files */ 117 int f_whiteout; /* show whiteout entries */ 118 int f_lomac; /* show LOMAC attributes */ 119 #ifdef COLORLS 120 int f_color; /* add type in color for non-regular files */ 121 122 char *ansi_bgcol; /* ANSI sequence to set background colour */ 123 char *ansi_fgcol; /* ANSI sequence to set foreground colour */ 124 char *ansi_coloff; /* ANSI sequence to reset colours */ 125 char *attrs_off; /* ANSI sequence to turn off attributes */ 126 char *enter_bold; /* ANSI sequence to set color to bold mode */ 127 #endif 128 129 int rval; 130 131 int 132 main(argc, argv) 133 int argc; 134 char *argv[]; 135 { 136 static char dot[] = ".", *dotav[] = {dot, NULL}; 137 struct winsize win; 138 int ch, fts_options, notused; 139 char *p; 140 #ifdef COLORLS 141 char termcapbuf[1024]; /* termcap definition buffer */ 142 char tcapbuf[512]; /* capability buffer */ 143 char *bp = tcapbuf; 144 #endif 145 146 (void)setlocale(LC_ALL, ""); 147 148 /* Terminal defaults to -Cq, non-terminal defaults to -1. */ 149 if (isatty(STDOUT_FILENO)) { 150 if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &win) == -1 || 151 !win.ws_col) { 152 if ((p = getenv("COLUMNS")) != NULL) 153 termwidth = atoi(p); 154 } else 155 termwidth = win.ws_col; 156 f_column = f_nonprint = 1; 157 } else { 158 f_singlecol = 1; 159 /* retrieve environment variable, in case of explicit -C */ 160 if ((p = getenv("COLUMNS"))) 161 termwidth = atoi(p); 162 } 163 164 /* Root is -A automatically. */ 165 if (!getuid()) 166 f_listdot = 1; 167 168 fts_options = FTS_PHYSICAL; 169 while ((ch = getopt(argc, argv, "1ABCFGHLPRTWZabcdfghiklnoqrstuw")) != -1) { 170 switch (ch) { 171 /* 172 * The -1, -C and -l options all override each other so shell 173 * aliasing works right. 174 */ 175 case '1': 176 f_singlecol = 1; 177 f_column = f_longform = 0; 178 break; 179 case 'B': 180 f_nonprint = 0; 181 f_octal = 1; 182 f_octal_escape = 0; 183 break; 184 case 'C': 185 f_column = 1; 186 f_longform = f_singlecol = 0; 187 break; 188 case 'l': 189 f_longform = 1; 190 f_column = f_singlecol = 0; 191 break; 192 /* The -c and -u options override each other. */ 193 case 'c': 194 f_statustime = 1; 195 f_accesstime = 0; 196 break; 197 case 'u': 198 f_accesstime = 1; 199 f_statustime = 0; 200 break; 201 case 'F': 202 f_type = 1; 203 break; 204 case 'H': 205 fts_options |= FTS_COMFOLLOW; 206 break; 207 case 'G': 208 setenv("CLICOLOR", "", 1); 209 break; 210 case 'L': 211 fts_options &= ~FTS_PHYSICAL; 212 fts_options |= FTS_LOGICAL; 213 break; 214 case 'P': 215 fts_options &= ~FTS_COMFOLLOW; 216 fts_options &= ~FTS_LOGICAL; 217 fts_options |= FTS_PHYSICAL; 218 break; 219 case 'R': 220 f_recursive = 1; 221 break; 222 case 'a': 223 fts_options |= FTS_SEEDOT; 224 /* FALLTHROUGH */ 225 case 'A': 226 f_listdot = 1; 227 break; 228 /* The -d option turns off the -R option. */ 229 case 'd': 230 f_listdir = 1; 231 f_recursive = 0; 232 break; 233 case 'f': 234 f_nosort = 1; 235 break; 236 case 'g': /* Compatibility with 4.3BSD. */ 237 break; 238 case 'h': 239 f_humanval = 1; 240 break; 241 case 'i': 242 f_inode = 1; 243 break; 244 case 'k': 245 f_kblocks = 1; 246 break; 247 case 'n': 248 f_numericonly = 1; 249 break; 250 case 'o': 251 f_flags = 1; 252 break; 253 case 'q': 254 f_nonprint = 1; 255 f_octal = 0; 256 f_octal_escape = 0; 257 break; 258 case 'r': 259 f_reversesort = 1; 260 break; 261 case 's': 262 f_size = 1; 263 break; 264 case 'T': 265 f_sectime = 1; 266 break; 267 case 't': 268 f_timesort = 1; 269 break; 270 case 'W': 271 f_whiteout = 1; 272 break; 273 case 'b': 274 f_nonprint = 0; 275 f_octal = 0; 276 f_octal_escape = 1; 277 break; 278 case 'w': 279 f_nonprint = 0; 280 f_octal = 0; 281 f_octal_escape = 0; 282 break; 283 case 'Z': 284 f_lomac = 1; 285 break; 286 default: 287 case '?': 288 usage(); 289 } 290 } 291 argc -= optind; 292 argv += optind; 293 294 /* Enabling of colours is conditional on the environment. */ 295 if (getenv("CLICOLOR") && 296 (isatty(STDOUT_FILENO) || getenv("CLICOLOR_FORCE"))) 297 #ifdef COLORLS 298 if (tgetent(termcapbuf, getenv("TERM")) == 1) { 299 ansi_fgcol = tgetstr("AF", &bp); 300 ansi_bgcol = tgetstr("AB", &bp); 301 attrs_off = tgetstr("me", &bp); 302 enter_bold = tgetstr("md", &bp); 303 304 /* To switch colours off use 'op' if 305 * available, otherwise use 'oc', or 306 * don't do colours at all. */ 307 ansi_coloff = tgetstr("op", &bp); 308 if (!ansi_coloff) 309 ansi_coloff = tgetstr("oc", &bp); 310 if (ansi_fgcol && ansi_bgcol && ansi_coloff) 311 f_color = 1; 312 } 313 #else 314 (void)fprintf(stderr, "Color support not compiled in.\n"); 315 #endif /*COLORLS*/ 316 317 #ifdef COLORLS 318 if (f_color) { 319 /* 320 * We can't put tabs and color sequences together: 321 * column number will be incremented incorrectly 322 * for "stty oxtabs" mode. 323 */ 324 f_notabs = 1; 325 (void)signal(SIGINT, colorquit); 326 (void)signal(SIGQUIT, colorquit); 327 parsecolors(getenv("LSCOLORS")); 328 } 329 #endif 330 331 /* 332 * If not -F, -i, -l, -s or -t options, don't require stat 333 * information, unless in color mode in which case we do 334 * need this to determine which colors to display. 335 */ 336 if (!f_inode && !f_longform && !f_size && !f_timesort && !f_type 337 #ifdef COLORLS 338 && !f_color 339 #endif 340 ) 341 fts_options |= FTS_NOSTAT; 342 343 /* 344 * If not -F, -d or -l options, follow any symbolic links listed on 345 * the command line. 346 */ 347 if (!f_longform && !f_listdir && !f_type) 348 fts_options |= FTS_COMFOLLOW; 349 350 /* 351 * If -W, show whiteout entries 352 */ 353 #ifdef FTS_WHITEOUT 354 if (f_whiteout) 355 fts_options |= FTS_WHITEOUT; 356 #endif 357 358 /* If -l or -s, figure out block size. */ 359 if (f_longform || f_size) { 360 if (f_kblocks) 361 blocksize = 2; 362 else { 363 (void)getbsize(¬used, &blocksize); 364 blocksize /= 512; 365 } 366 } 367 /* Select a sort function. */ 368 if (f_reversesort) { 369 if (!f_timesort) 370 sortfcn = revnamecmp; 371 else if (f_accesstime) 372 sortfcn = revacccmp; 373 else if (f_statustime) 374 sortfcn = revstatcmp; 375 else /* Use modification time. */ 376 sortfcn = revmodcmp; 377 } else { 378 if (!f_timesort) 379 sortfcn = namecmp; 380 else if (f_accesstime) 381 sortfcn = acccmp; 382 else if (f_statustime) 383 sortfcn = statcmp; 384 else /* Use modification time. */ 385 sortfcn = modcmp; 386 } 387 388 /* Select a print function. */ 389 if (f_singlecol) 390 printfcn = printscol; 391 else if (f_longform) 392 printfcn = printlong; 393 else 394 printfcn = printcol; 395 396 if (argc) 397 traverse(argc, argv, fts_options); 398 else 399 traverse(1, dotav, fts_options); 400 exit(rval); 401 } 402 403 static int output; /* If anything output. */ 404 405 /* 406 * Traverse() walks the logical directory structure specified by the argv list 407 * in the order specified by the mastercmp() comparison function. During the 408 * traversal it passes linked lists of structures to display() which represent 409 * a superset (may be exact set) of the files to be displayed. 410 */ 411 static void 412 traverse(argc, argv, options) 413 int argc, options; 414 char *argv[]; 415 { 416 FTS *ftsp; 417 FTSENT *p, *chp; 418 int ch_options; 419 420 if ((ftsp = 421 fts_open(argv, options, f_nosort ? NULL : mastercmp)) == NULL) 422 err(1, NULL); 423 424 display(NULL, fts_children(ftsp, 0)); 425 if (f_listdir) 426 return; 427 428 /* 429 * If not recursing down this tree and don't need stat info, just get 430 * the names. 431 */ 432 ch_options = !f_recursive && options & FTS_NOSTAT ? FTS_NAMEONLY : 0; 433 434 while ((p = fts_read(ftsp)) != NULL) 435 switch (p->fts_info) { 436 case FTS_DC: 437 warnx("%s: directory causes a cycle", p->fts_name); 438 break; 439 case FTS_DNR: 440 case FTS_ERR: 441 warnx("%s: %s", p->fts_name, strerror(p->fts_errno)); 442 rval = 1; 443 break; 444 case FTS_D: 445 if (p->fts_level != FTS_ROOTLEVEL && 446 p->fts_name[0] == '.' && !f_listdot) 447 break; 448 449 /* 450 * If already output something, put out a newline as 451 * a separator. If multiple arguments, precede each 452 * directory with its name. 453 */ 454 if (output) 455 (void)printf("\n%s:\n", p->fts_path); 456 else if (argc > 1) { 457 (void)printf("%s:\n", p->fts_path); 458 output = 1; 459 } 460 chp = fts_children(ftsp, ch_options); 461 display(p, chp); 462 463 if (!f_recursive && chp != NULL) 464 (void)fts_set(ftsp, p, FTS_SKIP); 465 break; 466 } 467 if (errno) 468 err(1, "fts_read"); 469 } 470 471 /* 472 * Display() takes a linked list of FTSENT structures and passes the list 473 * along with any other necessary information to the print function. P 474 * points to the parent directory of the display list. 475 */ 476 static void 477 display(p, list) 478 FTSENT *p, *list; 479 { 480 struct stat *sp; 481 DISPLAY d; 482 FTSENT *cur; 483 NAMES *np; 484 u_quad_t maxsize; 485 u_long btotal, maxblock, maxinode, maxlen, maxnlink, maxlattr; 486 int bcfile, flen, glen, ulen, lattrlen, maxflags, maxgroup, maxuser; 487 char *initmax; 488 int entries, needstats; 489 char *user, *group, *flags, *lattr; 490 char buf[STRBUF_SIZEOF(u_quad_t) + 1]; 491 char ngroup[STRBUF_SIZEOF(uid_t) + 1]; 492 char nuser[STRBUF_SIZEOF(gid_t) + 1]; 493 494 /* 495 * If list is NULL there are two possibilities: that the parent 496 * directory p has no children, or that fts_children() returned an 497 * error. We ignore the error case since it will be replicated 498 * on the next call to fts_read() on the post-order visit to the 499 * directory p, and will be signaled in traverse(). 500 */ 501 if (list == NULL) 502 return; 503 504 needstats = f_inode || f_longform || f_size; 505 flen = 0; 506 btotal = 0; 507 initmax = getenv("LS_COLWIDTHS"); 508 /* Fields match -lios order. New ones should be added at the end. */ 509 if (initmax != NULL && *initmax != '\0') { 510 char *initmax2, *jinitmax; 511 int ninitmax; 512 513 /* Fill-in "::" as "0:0:0" for the sake of scanf. */ 514 jinitmax = initmax2 = malloc(strlen(initmax) * 2 + 2); 515 if (jinitmax == NULL) 516 err(1, NULL); 517 if (*initmax == ':') 518 strcpy(initmax2, "0:"), initmax2 += 2; 519 else 520 *initmax2++ = *initmax, *initmax2 = '\0'; 521 for (initmax++; *initmax != '\0'; initmax++) { 522 if (initmax[-1] == ':' && initmax[0] == ':') { 523 *initmax2++ = '0'; 524 *initmax2++ = initmax[0]; 525 initmax2[1] = '\0'; 526 } else { 527 *initmax2++ = initmax[0]; 528 initmax2[1] = '\0'; 529 } 530 } 531 if (initmax2[-1] == ':') 532 strcpy(initmax2, "0"); 533 534 ninitmax = sscanf(jinitmax, 535 " %lu : %lu : %lu : %i : %i : %i : %qu : %lu : %lu ", 536 &maxinode, &maxblock, &maxnlink, &maxuser, 537 &maxgroup, &maxflags, &maxsize, &maxlen, &maxlattr); 538 f_notabs = 1; 539 switch (ninitmax) { 540 case 0: 541 maxinode = 0; 542 case 1: 543 maxblock = 0; 544 case 2: 545 maxnlink = 0; 546 case 3: 547 maxuser = 0; 548 case 4: 549 maxgroup = 0; 550 case 5: 551 maxflags = 0; 552 case 6: 553 maxsize = 0; 554 case 7: 555 maxlen = 0; 556 case 8: 557 maxlattr = 0; 558 #ifdef COLORLS 559 if (!f_color) 560 #endif 561 f_notabs = 0; 562 } 563 maxinode = makenines(maxinode); 564 maxblock = makenines(maxblock); 565 maxnlink = makenines(maxnlink); 566 maxsize = makenines(maxsize); 567 } else if (initmax == NULL || *initmax == '\0') 568 maxlattr = maxblock = maxinode = maxlen = maxnlink = 569 maxuser = maxgroup = maxflags = maxsize = 0; 570 if (f_lomac) 571 lomac_start(); 572 bcfile = 0; 573 flags = NULL; 574 for (cur = list, entries = 0; cur; cur = cur->fts_link) { 575 if (cur->fts_info == FTS_ERR || cur->fts_info == FTS_NS) { 576 warnx("%s: %s", 577 cur->fts_name, strerror(cur->fts_errno)); 578 cur->fts_number = NO_PRINT; 579 rval = 1; 580 continue; 581 } 582 /* 583 * P is NULL if list is the argv list, to which different rules 584 * apply. 585 */ 586 if (p == NULL) { 587 /* Directories will be displayed later. */ 588 if (cur->fts_info == FTS_D && !f_listdir) { 589 cur->fts_number = NO_PRINT; 590 continue; 591 } 592 } else { 593 /* Only display dot file if -a/-A set. */ 594 if (cur->fts_name[0] == '.' && !f_listdot) { 595 cur->fts_number = NO_PRINT; 596 continue; 597 } 598 } 599 if (cur->fts_namelen > maxlen) 600 maxlen = cur->fts_namelen; 601 if (f_octal || f_octal_escape) { 602 u_long t = len_octal(cur->fts_name, cur->fts_namelen); 603 604 if (t > maxlen) 605 maxlen = t; 606 } 607 if (needstats) { 608 sp = cur->fts_statp; 609 if (sp->st_blocks > maxblock) 610 maxblock = sp->st_blocks; 611 if (sp->st_ino > maxinode) 612 maxinode = sp->st_ino; 613 if (sp->st_nlink > maxnlink) 614 maxnlink = sp->st_nlink; 615 if (sp->st_size > maxsize) 616 maxsize = sp->st_size; 617 618 btotal += sp->st_blocks; 619 if (f_longform) { 620 if (f_numericonly) { 621 (void)snprintf(nuser, sizeof(nuser), 622 "%u", sp->st_uid); 623 (void)snprintf(ngroup, sizeof(ngroup), 624 "%u", sp->st_gid); 625 user = nuser; 626 group = ngroup; 627 } else { 628 user = user_from_uid(sp->st_uid, 0); 629 group = group_from_gid(sp->st_gid, 0); 630 } 631 if ((ulen = strlen(user)) > maxuser) 632 maxuser = ulen; 633 if ((glen = strlen(group)) > maxgroup) 634 maxgroup = glen; 635 if (f_flags) { 636 flags = fflagstostr(sp->st_flags); 637 if (flags != NULL && *flags == '\0') { 638 free(flags); 639 flags = strdup("-"); 640 } 641 if (flags == NULL) 642 err(1, NULL); 643 if ((flen = strlen(flags)) > maxflags) 644 maxflags = flen; 645 } else 646 flen = 0; 647 if (f_lomac) { 648 lattr = get_lattr(cur); 649 lattrlen = strlen(lattr); 650 if (lattrlen > maxlattr) 651 maxlattr = lattrlen; 652 } else 653 lattrlen = 0; 654 655 if ((np = malloc(sizeof(NAMES) + lattrlen + 656 ulen + glen + flen + 4)) == NULL) 657 err(1, NULL); 658 659 np->user = &np->data[0]; 660 (void)strcpy(np->user, user); 661 np->group = &np->data[ulen + 1]; 662 (void)strcpy(np->group, group); 663 664 if (S_ISCHR(sp->st_mode) || 665 S_ISBLK(sp->st_mode)) 666 bcfile = 1; 667 668 if (f_flags) { 669 np->flags = &np->data[ulen + glen + 2]; 670 (void)strcpy(np->flags, flags); 671 free(flags); 672 } 673 if (f_lomac) { 674 np->lattr = &np->data[ulen + glen + 2 675 + (f_flags ? flen + 1 : 0)]; 676 (void)strcpy(np->lattr, lattr); 677 free(lattr); 678 } 679 cur->fts_pointer = np; 680 } 681 } 682 ++entries; 683 } 684 685 if (!entries) 686 return; 687 688 d.list = list; 689 d.entries = entries; 690 d.maxlen = maxlen; 691 if (needstats) { 692 d.bcfile = bcfile; 693 d.btotal = btotal; 694 (void)snprintf(buf, sizeof(buf), "%lu", maxblock); 695 d.s_block = strlen(buf); 696 d.s_flags = maxflags; 697 d.s_lattr = maxlattr; 698 d.s_group = maxgroup; 699 (void)snprintf(buf, sizeof(buf), "%lu", maxinode); 700 d.s_inode = strlen(buf); 701 (void)snprintf(buf, sizeof(buf), "%lu", maxnlink); 702 d.s_nlink = strlen(buf); 703 (void)snprintf(buf, sizeof(buf), "%qu", maxsize); 704 d.s_size = strlen(buf); 705 d.s_user = maxuser; 706 } 707 printfcn(&d); 708 output = 1; 709 710 if (f_longform) 711 for (cur = list; cur; cur = cur->fts_link) 712 free(cur->fts_pointer); 713 if (f_lomac) 714 lomac_stop(); 715 } 716 717 /* 718 * Ordering for mastercmp: 719 * If ordering the argv (fts_level = FTS_ROOTLEVEL) return non-directories 720 * as larger than directories. Within either group, use the sort function. 721 * All other levels use the sort function. Error entries remain unsorted. 722 */ 723 static int 724 mastercmp(a, b) 725 const FTSENT **a, **b; 726 { 727 int a_info, b_info; 728 729 a_info = (*a)->fts_info; 730 if (a_info == FTS_ERR) 731 return (0); 732 b_info = (*b)->fts_info; 733 if (b_info == FTS_ERR) 734 return (0); 735 736 if (a_info == FTS_NS || b_info == FTS_NS) 737 return (namecmp(*a, *b)); 738 739 if (a_info != b_info && 740 (*a)->fts_level == FTS_ROOTLEVEL && !f_listdir) { 741 if (a_info == FTS_D) 742 return (1); 743 if (b_info == FTS_D) 744 return (-1); 745 } 746 return (sortfcn(*a, *b)); 747 } 748 749 /* 750 * Makenines() returns (10**n)-1. This is useful for converting a width 751 * into a number that wide in decimal. 752 */ 753 static u_quad_t 754 makenines(n) 755 u_long n; 756 { 757 u_long i; 758 u_quad_t reg; 759 760 reg = 1; 761 /* Use a loop instead of pow(), since all values of n are small. */ 762 for (i = 0; i < n; i++) 763 reg *= 10; 764 reg--; 765 766 return reg; 767 } 768