ls.c revision 90878
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 39__FBSDID("$FreeBSD: head/bin/ls/ls.c 90878 2002-02-19 00:05:59Z imp $"); 40 41#ifndef lint 42static const char copyright[] = 43"@(#) Copyright (c) 1989, 1993, 1994\n\ 44 The Regents of the University of California. All rights reserved.\n"; 45#endif /* not lint */ 46 47#if 0 48#ifndef lint 49static char sccsid[] = "@(#)ls.c 8.5 (Berkeley) 4/2/94"; 50#endif /* not lint */ 51#endif 52 53#include <sys/types.h> 54#include <sys/stat.h> 55#include <sys/ioctl.h> 56 57#include <dirent.h> 58#include <err.h> 59#include <errno.h> 60#include <fts.h> 61#include <grp.h> 62#include <limits.h> 63#include <locale.h> 64#include <pwd.h> 65#include <stdio.h> 66#include <stdlib.h> 67#include <string.h> 68#include <unistd.h> 69#ifdef COLORLS 70#include <termcap.h> 71#include <signal.h> 72#endif 73 74#include "ls.h" 75#include "extern.h" 76#include "lomac.h" 77 78/* 79 * Upward approximation of the maximum number of characters needed to 80 * represent a value of integral type t as a string, excluding the 81 * NUL terminator, with provision for a sign. 82 */ 83#define STRBUF_SIZEOF(t) (1 + CHAR_BIT * sizeof(t) / 3 + 1) 84 85static void display(FTSENT *, FTSENT *); 86static u_quad_t makenines(u_long); 87static int mastercmp(const FTSENT **, const FTSENT **); 88static void traverse(int, char **, int); 89 90static void (*printfcn)(DISPLAY *); 91static int (*sortfcn)(const FTSENT *, const FTSENT *); 92 93long blocksize; /* block size units */ 94int termwidth = 80; /* default terminal width */ 95 96/* flags */ 97 int f_accesstime; /* use time of last access */ 98 int f_flags; /* show flags associated with a file */ 99 int f_humanval; /* show human-readable file sizes */ 100 int f_inode; /* print inode */ 101static int f_kblocks; /* print size in kilobytes */ 102static int f_listdir; /* list actual directory, not contents */ 103static int f_listdot; /* list files beginning with . */ 104 int f_longform; /* long listing format */ 105 int f_nonprint; /* show unprintables as ? */ 106static int f_nosort; /* don't sort output */ 107 int f_notabs; /* don't use tab-separated multi-col output */ 108static 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 */ 111static int f_recursive; /* ls subdirectories also */ 112static int f_reversesort; /* reverse whatever sort is used */ 113 int f_sectime; /* print the real time for all files */ 114static int f_singlecol; /* use single column output */ 115 int f_size; /* list size in short listing */ 116 int f_statustime; /* use time of last mode change */ 117static int f_timesort; /* sort by time vice name */ 118 int f_type; /* add type character for non-regular files */ 119static int f_whiteout; /* show whiteout entries */ 120 int f_lomac; /* show LOMAC attributes */ 121#ifdef COLORLS 122 int f_color; /* add type in color for non-regular files */ 123 124char *ansi_bgcol; /* ANSI sequence to set background colour */ 125char *ansi_fgcol; /* ANSI sequence to set foreground colour */ 126char *ansi_coloff; /* ANSI sequence to reset colours */ 127char *attrs_off; /* ANSI sequence to turn off attributes */ 128char *enter_bold; /* ANSI sequence to set color to bold mode */ 129#endif 130 131static int rval; 132 133int 134main(int argc, 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_nonprint = 1; 157 } else { 158 f_singlecol = 1; 159 /* retrieve environment variable, in case of explicit -C */ 160 p = getenv("COLUMNS"); 161 if (p) 162 termwidth = atoi(p); 163 } 164 165 /* Root is -A automatically. */ 166 if (!getuid()) 167 f_listdot = 1; 168 169 fts_options = FTS_PHYSICAL; 170 while ((ch = getopt(argc, argv, "1ABCFGHLPRTWZabcdfghiklnoqrstuw")) != -1) { 171 switch (ch) { 172 /* 173 * The -1, -C and -l options all override each other so shell 174 * aliasing works right. 175 */ 176 case '1': 177 f_singlecol = 1; 178 f_longform = 0; 179 break; 180 case 'B': 181 f_nonprint = 0; 182 f_octal = 1; 183 f_octal_escape = 0; 184 break; 185 case 'C': 186 f_longform = f_singlecol = 0; 187 break; 188 case 'l': 189 f_longform = 1; 190 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 403static 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 */ 411static void 412traverse(int argc, char *argv[], int options) 413{ 414 FTS *ftsp; 415 FTSENT *p, *chp; 416 int ch_options; 417 418 if ((ftsp = 419 fts_open(argv, options, f_nosort ? NULL : mastercmp)) == NULL) 420 err(1, NULL); 421 422 display(NULL, fts_children(ftsp, 0)); 423 if (f_listdir) 424 return; 425 426 /* 427 * If not recursing down this tree and don't need stat info, just get 428 * the names. 429 */ 430 ch_options = !f_recursive && options & FTS_NOSTAT ? FTS_NAMEONLY : 0; 431 432 while ((p = fts_read(ftsp)) != NULL) 433 switch (p->fts_info) { 434 case FTS_DC: 435 warnx("%s: directory causes a cycle", p->fts_name); 436 break; 437 case FTS_DNR: 438 case FTS_ERR: 439 warnx("%s: %s", p->fts_name, strerror(p->fts_errno)); 440 rval = 1; 441 break; 442 case FTS_D: 443 if (p->fts_level != FTS_ROOTLEVEL && 444 p->fts_name[0] == '.' && !f_listdot) 445 break; 446 447 /* 448 * If already output something, put out a newline as 449 * a separator. If multiple arguments, precede each 450 * directory with its name. 451 */ 452 if (output) 453 (void)printf("\n%s:\n", p->fts_path); 454 else if (argc > 1) { 455 (void)printf("%s:\n", p->fts_path); 456 output = 1; 457 } 458 chp = fts_children(ftsp, ch_options); 459 display(p, chp); 460 461 if (!f_recursive && chp != NULL) 462 (void)fts_set(ftsp, p, FTS_SKIP); 463 break; 464 default: 465 } 466 if (errno) 467 err(1, "fts_read"); 468} 469 470/* 471 * Display() takes a linked list of FTSENT structures and passes the list 472 * along with any other necessary information to the print function. P 473 * points to the parent directory of the display list. 474 */ 475static void 476display(FTSENT *p, FTSENT *list) 477{ 478 struct stat *sp; 479 DISPLAY d; 480 FTSENT *cur; 481 NAMES *np; 482 off_t maxsize; 483 u_long btotal, lattrlen, maxblock, maxinode, maxlen, maxnlink, maxlattr; 484 int bcfile, maxflags; 485 gid_t maxgroup; 486 uid_t maxuser; 487 size_t flen, ulen, glen; 488 char *initmax; 489 int entries, needstats; 490 char *user, *group, *flags, *lattr = NULL; 491 char buf[STRBUF_SIZEOF(u_quad_t) + 1]; 492 char ngroup[STRBUF_SIZEOF(uid_t) + 1]; 493 char nuser[STRBUF_SIZEOF(gid_t) + 1]; 494 495 /* 496 * If list is NULL there are two possibilities: that the parent 497 * directory p has no children, or that fts_children() returned an 498 * error. We ignore the error case since it will be replicated 499 * on the next call to fts_read() on the post-order visit to the 500 * directory p, and will be signaled in traverse(). 501 */ 502 if (list == NULL) 503 return; 504 505 needstats = f_inode || f_longform || f_size; 506 flen = 0; 507 btotal = 0; 508 initmax = getenv("LS_COLWIDTHS"); 509 /* Fields match -lios order. New ones should be added at the end. */ 510 maxlattr = maxblock = maxinode = maxlen = maxnlink = 511 maxuser = maxgroup = maxflags = maxsize = 0; 512 if (initmax != NULL && *initmax != '\0') { 513 char *initmax2, *jinitmax; 514 int ninitmax; 515 516 /* Fill-in "::" as "0:0:0" for the sake of scanf. */ 517 jinitmax = initmax2 = malloc(strlen(initmax) * 2 + 2); 518 if (jinitmax == NULL) 519 err(1, NULL); 520 if (*initmax == ':') 521 strcpy(initmax2, "0:"), initmax2 += 2; 522 else 523 *initmax2++ = *initmax, *initmax2 = '\0'; 524 for (initmax++; *initmax != '\0'; initmax++) { 525 if (initmax[-1] == ':' && initmax[0] == ':') { 526 *initmax2++ = '0'; 527 *initmax2++ = initmax[0]; 528 initmax2[1] = '\0'; 529 } else { 530 *initmax2++ = initmax[0]; 531 initmax2[1] = '\0'; 532 } 533 } 534 if (initmax2[-1] == ':') 535 strcpy(initmax2, "0"); 536 537 ninitmax = sscanf(jinitmax, 538 " %lu : %lu : %lu : %i : %i : %i : %llu : %lu : %lu ", 539 &maxinode, &maxblock, &maxnlink, &maxuser, 540 &maxgroup, &maxflags, &maxsize, &maxlen, &maxlattr); 541 f_notabs = 1; 542 switch (ninitmax) { 543 case 0: 544 maxinode = 0; 545 /* fall through */ 546 case 1: 547 maxblock = 0; 548 /* fall through */ 549 case 2: 550 maxnlink = 0; 551 /* fall through */ 552 case 3: 553 maxuser = 0; 554 /* fall through */ 555 case 4: 556 maxgroup = 0; 557 /* fall through */ 558 case 5: 559 maxflags = 0; 560 /* fall through */ 561 case 6: 562 maxsize = 0; 563 /* fall through */ 564 case 7: 565 maxlen = 0; 566 /* fall through */ 567 case 8: 568 maxlattr = 0; 569 /* fall through */ 570#ifdef COLORLS 571 if (!f_color) 572#endif 573 f_notabs = 0; 574 /* fall through */ 575 default: 576 } 577 maxinode = makenines(maxinode); 578 maxblock = makenines(maxblock); 579 maxnlink = makenines(maxnlink); 580 maxsize = makenines(maxsize); 581 } 582 if (f_lomac) 583 lomac_start(); 584 bcfile = 0; 585 flags = NULL; 586 for (cur = list, entries = 0; cur; cur = cur->fts_link) { 587 if (cur->fts_info == FTS_ERR || cur->fts_info == FTS_NS) { 588 warnx("%s: %s", 589 cur->fts_name, strerror(cur->fts_errno)); 590 cur->fts_number = NO_PRINT; 591 rval = 1; 592 continue; 593 } 594 /* 595 * P is NULL if list is the argv list, to which different rules 596 * apply. 597 */ 598 if (p == NULL) { 599 /* Directories will be displayed later. */ 600 if (cur->fts_info == FTS_D && !f_listdir) { 601 cur->fts_number = NO_PRINT; 602 continue; 603 } 604 } else { 605 /* Only display dot file if -a/-A set. */ 606 if (cur->fts_name[0] == '.' && !f_listdot) { 607 cur->fts_number = NO_PRINT; 608 continue; 609 } 610 } 611 if (cur->fts_namelen > maxlen) 612 maxlen = cur->fts_namelen; 613 if (f_octal || f_octal_escape) { 614 u_long t = len_octal(cur->fts_name, cur->fts_namelen); 615 616 if (t > maxlen) 617 maxlen = t; 618 } 619 if (needstats) { 620 sp = cur->fts_statp; 621 if (sp->st_blocks > maxblock) 622 maxblock = sp->st_blocks; 623 if (sp->st_ino > maxinode) 624 maxinode = sp->st_ino; 625 if (sp->st_nlink > maxnlink) 626 maxnlink = sp->st_nlink; 627 if (sp->st_size > maxsize) 628 maxsize = sp->st_size; 629 630 btotal += sp->st_blocks; 631 if (f_longform) { 632 if (f_numericonly) { 633 (void)snprintf(nuser, sizeof(nuser), 634 "%u", sp->st_uid); 635 (void)snprintf(ngroup, sizeof(ngroup), 636 "%u", sp->st_gid); 637 user = nuser; 638 group = ngroup; 639 } else { 640 user = user_from_uid(sp->st_uid, 0); 641 group = group_from_gid(sp->st_gid, 0); 642 } 643 if ((ulen = strlen(user)) > maxuser) 644 maxuser = ulen; 645 if ((glen = strlen(group)) > maxgroup) 646 maxgroup = glen; 647 if (f_flags) { 648 flags = fflagstostr(sp->st_flags); 649 if (flags != NULL && *flags == '\0') { 650 free(flags); 651 flags = strdup("-"); 652 } 653 if (flags == NULL) 654 err(1, NULL); 655 flen = strlen(flags); 656 if (flen > (size_t)maxflags) 657 maxflags = flen; 658 } else 659 flen = 0; 660 lattr = NULL; 661 if (f_lomac) { 662 lattr = get_lattr(cur); 663 lattrlen = strlen(lattr); 664 if (lattrlen > maxlattr) 665 maxlattr = lattrlen; 666 } else 667 lattrlen = 0; 668 669 if ((np = malloc(sizeof(NAMES) + lattrlen + 670 ulen + glen + flen + 4)) == NULL) 671 err(1, NULL); 672 673 np->user = &np->data[0]; 674 (void)strcpy(np->user, user); 675 np->group = &np->data[ulen + 1]; 676 (void)strcpy(np->group, group); 677 678 if (S_ISCHR(sp->st_mode) || 679 S_ISBLK(sp->st_mode)) 680 bcfile = 1; 681 682 if (f_flags) { 683 np->flags = &np->data[ulen + glen + 2]; 684 (void)strcpy(np->flags, flags); 685 free(flags); 686 } 687 if (f_lomac) { 688 np->lattr = &np->data[ulen + glen + 2 689 + (f_flags ? flen + 1 : 0)]; 690 (void)strcpy(np->lattr, lattr); 691 free(lattr); 692 } 693 cur->fts_pointer = np; 694 } 695 } 696 ++entries; 697 } 698 699 if (!entries) 700 return; 701 702 d.list = list; 703 d.entries = entries; 704 d.maxlen = maxlen; 705 if (needstats) { 706 d.bcfile = bcfile; 707 d.btotal = btotal; 708 (void)snprintf(buf, sizeof(buf), "%lu", maxblock); 709 d.s_block = strlen(buf); 710 d.s_flags = maxflags; 711 d.s_lattr = maxlattr; 712 d.s_group = maxgroup; 713 (void)snprintf(buf, sizeof(buf), "%lu", maxinode); 714 d.s_inode = strlen(buf); 715 (void)snprintf(buf, sizeof(buf), "%lu", maxnlink); 716 d.s_nlink = strlen(buf); 717 (void)snprintf(buf, sizeof(buf), "%qu", maxsize); 718 d.s_size = strlen(buf); 719 d.s_user = maxuser; 720 } 721 printfcn(&d); 722 output = 1; 723 724 if (f_longform) 725 for (cur = list; cur; cur = cur->fts_link) 726 free(cur->fts_pointer); 727 if (f_lomac) 728 lomac_stop(); 729} 730 731/* 732 * Ordering for mastercmp: 733 * If ordering the argv (fts_level = FTS_ROOTLEVEL) return non-directories 734 * as larger than directories. Within either group, use the sort function. 735 * All other levels use the sort function. Error entries remain unsorted. 736 */ 737static int 738mastercmp(const FTSENT **a, const FTSENT **b) 739{ 740 int a_info, b_info; 741 742 a_info = (*a)->fts_info; 743 if (a_info == FTS_ERR) 744 return (0); 745 b_info = (*b)->fts_info; 746 if (b_info == FTS_ERR) 747 return (0); 748 749 if (a_info == FTS_NS || b_info == FTS_NS) 750 return (namecmp(*a, *b)); 751 752 if (a_info != b_info && 753 (*a)->fts_level == FTS_ROOTLEVEL && !f_listdir) { 754 if (a_info == FTS_D) 755 return (1); 756 if (b_info == FTS_D) 757 return (-1); 758 } 759 return (sortfcn(*a, *b)); 760} 761 762/* 763 * Makenines() returns (10**n)-1. This is useful for converting a width 764 * into a number that wide in decimal. 765 */ 766static u_quad_t 767makenines(u_long n) 768{ 769 u_long i; 770 u_quad_t reg; 771 772 reg = 1; 773 /* Use a loop instead of pow(), since all values of n are small. */ 774 for (i = 0; i < n; i++) 775 reg *= 10; 776 reg--; 777 778 return reg; 779} 780