ls.c revision 88602
1228879Sed/* 2228879Sed * Copyright (c) 1989, 1993, 1994 3228879Sed * The Regents of the University of California. All rights reserved. 4228879Sed * 5228879Sed * This code is derived from software contributed to Berkeley by 6228879Sed * Michael Fischbein. 7228879Sed * 8228879Sed * Redistribution and use in source and binary forms, with or without 9228879Sed * modification, are permitted provided that the following conditions 10228879Sed * are met: 11228879Sed * 1. Redistributions of source code must retain the above copyright 12228879Sed * notice, this list of conditions and the following disclaimer. 13228879Sed * 2. Redistributions in binary form must reproduce the above copyright 14228879Sed * notice, this list of conditions and the following disclaimer in the 15228879Sed * documentation and/or other materials provided with the distribution. 16228879Sed * 3. All advertising materials mentioning features or use of this software 17228879Sed * must display the following acknowledgement: 18228879Sed * This product includes software developed by the University of 19228879Sed * California, Berkeley and its contributors. 20228879Sed * 4. Neither the name of the University nor the names of its contributors 21228879Sed * may be used to endorse or promote products derived from this software 22228879Sed * without specific prior written permission. 23228879Sed * 24228879Sed * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25228879Sed * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26228879Sed * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27228879Sed * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28228879Sed * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29229437Sed * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30229437Sed * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31229437Sed * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32229437Sed * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33228879Sed * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34228879Sed * SUCH DAMAGE. 35228879Sed */ 36228879Sed 37228879Sed#ifndef lint 38228879Sedstatic 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 45static char sccsid[] = "@(#)ls.c 8.5 (Berkeley) 4/2/94"; 46#else 47static const char rcsid[] = 48 "$FreeBSD: head/bin/ls/ls.c 88602 2001-12-29 00:18:16Z joe $"; 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 82static void display __P((FTSENT *, FTSENT *)); 83static u_quad_t makenines __P((u_long)); 84static int mastercmp __P((const FTSENT **, const FTSENT **)); 85static void traverse __P((int, char **, int)); 86 87static void (*printfcn) __P((DISPLAY *)); 88static int (*sortfcn) __P((const FTSENT *, const FTSENT *)); 89 90long blocksize; /* block size units */ 91int termwidth = 80; /* default terminal width */ 92 93/* flags */ 94int f_accesstime; /* use time of last access */ 95int f_column; /* columnated format */ 96int f_flags; /* show flags associated with a file */ 97int f_humanval; /* show human-readable file sizes */ 98int f_inode; /* print inode */ 99int f_kblocks; /* print size in kilobytes */ 100int f_listdir; /* list actual directory, not contents */ 101int f_listdot; /* list files beginning with . */ 102int f_longform; /* long listing format */ 103int f_nonprint; /* show unprintables as ? */ 104int f_nosort; /* don't sort output */ 105int f_notabs; /* don't use tab-separated multi-col output */ 106int f_numericonly; /* don't convert uid/gid to name */ 107int f_octal; /* show unprintables as \xxx */ 108int f_octal_escape; /* like f_octal but use C escapes if possible */ 109int f_recursive; /* ls subdirectories also */ 110int f_reversesort; /* reverse whatever sort is used */ 111int f_sectime; /* print the real time for all files */ 112int f_singlecol; /* use single column output */ 113int f_size; /* list size in short listing */ 114int f_statustime; /* use time of last mode change */ 115int f_timesort; /* sort by time vice name */ 116int f_type; /* add type character for non-regular files */ 117int f_whiteout; /* show whiteout entries */ 118int f_lomac; /* show LOMAC attributes */ 119#ifdef COLORLS 120int f_color; /* add type in color for non-regular files */ 121 122char *ansi_bgcol; /* ANSI sequence to set background colour */ 123char *ansi_fgcol; /* ANSI sequence to set foreground colour */ 124char *ansi_coloff; /* ANSI sequence to reset colours */ 125char *attrs_off; /* ANSI sequence to turn off attributes */ 126char *enter_bold; /* ANSI sequence to set color to bold mode */ 127#endif 128 129int rval; 130 131int 132main(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, "1ABCFGHLPRTWZabcdfghiklnoqrstu")) != -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 'Z': 279 f_lomac = 1; 280 break; 281 default: 282 case '?': 283 usage(); 284 } 285 } 286 argc -= optind; 287 argv += optind; 288 289 /* Enabling of colours is conditional on the environment. */ 290 if (getenv("CLICOLOR") && 291 (isatty(STDOUT_FILENO) || getenv("CLICOLOR_FORCE"))) 292#ifdef COLORLS 293 if (tgetent(termcapbuf, getenv("TERM")) == 1) { 294 ansi_fgcol = tgetstr("AF", &bp); 295 ansi_bgcol = tgetstr("AB", &bp); 296 attrs_off = tgetstr("me", &bp); 297 enter_bold = tgetstr("md", &bp); 298 299 /* To switch colours off use 'op' if 300 * available, otherwise use 'oc', or 301 * don't do colours at all. */ 302 ansi_coloff = tgetstr("op", &bp); 303 if (!ansi_coloff) 304 ansi_coloff = tgetstr("oc", &bp); 305 if (ansi_fgcol && ansi_bgcol && ansi_coloff) 306 f_color = 1; 307 } 308#else 309 (void)fprintf(stderr, "Color support not compiled in.\n"); 310#endif /*COLORLS*/ 311 312#ifdef COLORLS 313 if (f_color) { 314 /* 315 * We can't put tabs and color sequences together: 316 * column number will be incremented incorrectly 317 * for "stty oxtabs" mode. 318 */ 319 f_notabs = 1; 320 (void)signal(SIGINT, colorquit); 321 (void)signal(SIGQUIT, colorquit); 322 parsecolors(getenv("LSCOLORS")); 323 } 324#endif 325 326 /* 327 * If not -F, -i, -l, -s or -t options, don't require stat 328 * information, unless in color mode in which case we do 329 * need this to determine which colors to display. 330 */ 331 if (!f_inode && !f_longform && !f_size && !f_timesort && !f_type 332#ifdef COLORLS 333 && !f_color 334#endif 335 ) 336 fts_options |= FTS_NOSTAT; 337 338 /* 339 * If not -F, -d or -l options, follow any symbolic links listed on 340 * the command line. 341 */ 342 if (!f_longform && !f_listdir && !f_type) 343 fts_options |= FTS_COMFOLLOW; 344 345 /* 346 * If -W, show whiteout entries 347 */ 348#ifdef FTS_WHITEOUT 349 if (f_whiteout) 350 fts_options |= FTS_WHITEOUT; 351#endif 352 353 /* If -l or -s, figure out block size. */ 354 if (f_longform || f_size) { 355 if (f_kblocks) 356 blocksize = 2; 357 else { 358 (void)getbsize(¬used, &blocksize); 359 blocksize /= 512; 360 } 361 } 362 /* Select a sort function. */ 363 if (f_reversesort) { 364 if (!f_timesort) 365 sortfcn = revnamecmp; 366 else if (f_accesstime) 367 sortfcn = revacccmp; 368 else if (f_statustime) 369 sortfcn = revstatcmp; 370 else /* Use modification time. */ 371 sortfcn = revmodcmp; 372 } else { 373 if (!f_timesort) 374 sortfcn = namecmp; 375 else if (f_accesstime) 376 sortfcn = acccmp; 377 else if (f_statustime) 378 sortfcn = statcmp; 379 else /* Use modification time. */ 380 sortfcn = modcmp; 381 } 382 383 /* Select a print function. */ 384 if (f_singlecol) 385 printfcn = printscol; 386 else if (f_longform) 387 printfcn = printlong; 388 else 389 printfcn = printcol; 390 391 if (argc) 392 traverse(argc, argv, fts_options); 393 else 394 traverse(1, dotav, fts_options); 395 exit(rval); 396} 397 398static int output; /* If anything output. */ 399 400/* 401 * Traverse() walks the logical directory structure specified by the argv list 402 * in the order specified by the mastercmp() comparison function. During the 403 * traversal it passes linked lists of structures to display() which represent 404 * a superset (may be exact set) of the files to be displayed. 405 */ 406static void 407traverse(argc, argv, options) 408 int argc, options; 409 char *argv[]; 410{ 411 FTS *ftsp; 412 FTSENT *p, *chp; 413 int ch_options; 414 415 if ((ftsp = 416 fts_open(argv, options, f_nosort ? NULL : mastercmp)) == NULL) 417 err(1, NULL); 418 419 display(NULL, fts_children(ftsp, 0)); 420 if (f_listdir) 421 return; 422 423 /* 424 * If not recursing down this tree and don't need stat info, just get 425 * the names. 426 */ 427 ch_options = !f_recursive && options & FTS_NOSTAT ? FTS_NAMEONLY : 0; 428 429 while ((p = fts_read(ftsp)) != NULL) 430 switch (p->fts_info) { 431 case FTS_DC: 432 warnx("%s: directory causes a cycle", p->fts_name); 433 break; 434 case FTS_DNR: 435 case FTS_ERR: 436 warnx("%s: %s", p->fts_name, strerror(p->fts_errno)); 437 rval = 1; 438 break; 439 case FTS_D: 440 if (p->fts_level != FTS_ROOTLEVEL && 441 p->fts_name[0] == '.' && !f_listdot) 442 break; 443 444 /* 445 * If already output something, put out a newline as 446 * a separator. If multiple arguments, precede each 447 * directory with its name. 448 */ 449 if (output) 450 (void)printf("\n%s:\n", p->fts_path); 451 else if (argc > 1) { 452 (void)printf("%s:\n", p->fts_path); 453 output = 1; 454 } 455 chp = fts_children(ftsp, ch_options); 456 display(p, chp); 457 458 if (!f_recursive && chp != NULL) 459 (void)fts_set(ftsp, p, FTS_SKIP); 460 break; 461 } 462 if (errno) 463 err(1, "fts_read"); 464} 465 466/* 467 * Display() takes a linked list of FTSENT structures and passes the list 468 * along with any other necessary information to the print function. P 469 * points to the parent directory of the display list. 470 */ 471static void 472display(p, list) 473 FTSENT *p, *list; 474{ 475 struct stat *sp; 476 DISPLAY d; 477 FTSENT *cur; 478 NAMES *np; 479 u_quad_t maxsize; 480 u_long btotal, maxblock, maxinode, maxlen, maxnlink, maxlattr; 481 int bcfile, flen, glen, ulen, lattrlen, maxflags, maxgroup, maxuser; 482 char *initmax; 483 int entries, needstats; 484 char *user, *group, *flags, *lattr; 485 char buf[STRBUF_SIZEOF(u_quad_t) + 1]; 486 char ngroup[STRBUF_SIZEOF(uid_t) + 1]; 487 char nuser[STRBUF_SIZEOF(gid_t) + 1]; 488 489 /* 490 * If list is NULL there are two possibilities: that the parent 491 * directory p has no children, or that fts_children() returned an 492 * error. We ignore the error case since it will be replicated 493 * on the next call to fts_read() on the post-order visit to the 494 * directory p, and will be signaled in traverse(). 495 */ 496 if (list == NULL) 497 return; 498 499 needstats = f_inode || f_longform || f_size; 500 flen = 0; 501 btotal = 0; 502 initmax = getenv("LS_COLWIDTHS"); 503 /* Fields match -lios order. New ones should be added at the end. */ 504 if (initmax != NULL && *initmax != '\0') { 505 char *initmax2, *jinitmax; 506 int ninitmax; 507 508 /* Fill-in "::" as "0:0:0" for the sake of scanf. */ 509 jinitmax = initmax2 = malloc(strlen(initmax) * 2 + 2); 510 if (jinitmax == NULL) 511 err(1, NULL); 512 if (*initmax == ':') 513 strcpy(initmax2, "0:"), initmax2 += 2; 514 else 515 *initmax2++ = *initmax, *initmax2 = '\0'; 516 for (initmax++; *initmax != '\0'; initmax++) { 517 if (initmax[-1] == ':' && initmax[0] == ':') { 518 *initmax2++ = '0'; 519 *initmax2++ = initmax[0]; 520 initmax2[1] = '\0'; 521 } else { 522 *initmax2++ = initmax[0]; 523 initmax2[1] = '\0'; 524 } 525 } 526 if (initmax2[-1] == ':') 527 strcpy(initmax2, "0"); 528 529 ninitmax = sscanf(jinitmax, 530 " %lu : %lu : %lu : %i : %i : %i : %qu : %lu : %lu ", 531 &maxinode, &maxblock, &maxnlink, &maxuser, 532 &maxgroup, &maxflags, &maxsize, &maxlen, &maxlattr); 533 f_notabs = 1; 534 switch (ninitmax) { 535 case 0: 536 maxinode = 0; 537 case 1: 538 maxblock = 0; 539 case 2: 540 maxnlink = 0; 541 case 3: 542 maxuser = 0; 543 case 4: 544 maxgroup = 0; 545 case 5: 546 maxflags = 0; 547 case 6: 548 maxsize = 0; 549 case 7: 550 maxlen = 0; 551 case 8: 552 maxlattr = 0; 553#ifdef COLORLS 554 if (!f_color) 555#endif 556 f_notabs = 0; 557 } 558 maxinode = makenines(maxinode); 559 maxblock = makenines(maxblock); 560 maxnlink = makenines(maxnlink); 561 maxsize = makenines(maxsize); 562 } else if (initmax == NULL || *initmax == '\0') 563 maxlattr = maxblock = maxinode = maxlen = maxnlink = 564 maxuser = maxgroup = maxflags = maxsize = 0; 565 if (f_lomac) 566 lomac_start(); 567 bcfile = 0; 568 flags = NULL; 569 for (cur = list, entries = 0; cur; cur = cur->fts_link) { 570 if (cur->fts_info == FTS_ERR || cur->fts_info == FTS_NS) { 571 warnx("%s: %s", 572 cur->fts_name, strerror(cur->fts_errno)); 573 cur->fts_number = NO_PRINT; 574 rval = 1; 575 continue; 576 } 577 /* 578 * P is NULL if list is the argv list, to which different rules 579 * apply. 580 */ 581 if (p == NULL) { 582 /* Directories will be displayed later. */ 583 if (cur->fts_info == FTS_D && !f_listdir) { 584 cur->fts_number = NO_PRINT; 585 continue; 586 } 587 } else { 588 /* Only display dot file if -a/-A set. */ 589 if (cur->fts_name[0] == '.' && !f_listdot) { 590 cur->fts_number = NO_PRINT; 591 continue; 592 } 593 } 594 if (cur->fts_namelen > maxlen) 595 maxlen = cur->fts_namelen; 596 if (f_octal || f_octal_escape) { 597 u_long t = len_octal(cur->fts_name, cur->fts_namelen); 598 599 if (t > maxlen) 600 maxlen = t; 601 } 602 if (needstats) { 603 sp = cur->fts_statp; 604 if (sp->st_blocks > maxblock) 605 maxblock = sp->st_blocks; 606 if (sp->st_ino > maxinode) 607 maxinode = sp->st_ino; 608 if (sp->st_nlink > maxnlink) 609 maxnlink = sp->st_nlink; 610 if (sp->st_size > maxsize) 611 maxsize = sp->st_size; 612 613 btotal += sp->st_blocks; 614 if (f_longform) { 615 if (f_numericonly) { 616 (void)snprintf(nuser, sizeof(nuser), 617 "%u", sp->st_uid); 618 (void)snprintf(ngroup, sizeof(ngroup), 619 "%u", sp->st_gid); 620 user = nuser; 621 group = ngroup; 622 } else { 623 user = user_from_uid(sp->st_uid, 0); 624 group = group_from_gid(sp->st_gid, 0); 625 } 626 if ((ulen = strlen(user)) > maxuser) 627 maxuser = ulen; 628 if ((glen = strlen(group)) > maxgroup) 629 maxgroup = glen; 630 if (f_flags) { 631 flags = fflagstostr(sp->st_flags); 632 if (flags != NULL && *flags == '\0') { 633 free(flags); 634 flags = strdup("-"); 635 } 636 if (flags == NULL) 637 err(1, NULL); 638 if ((flen = strlen(flags)) > maxflags) 639 maxflags = flen; 640 } else 641 flen = 0; 642 if (f_lomac) { 643 lattr = get_lattr(cur); 644 lattrlen = strlen(lattr); 645 if (lattrlen > maxlattr) 646 maxlattr = lattrlen; 647 } else 648 lattrlen = 0; 649 650 if ((np = malloc(sizeof(NAMES) + lattrlen + 651 ulen + glen + flen + 4)) == NULL) 652 err(1, NULL); 653 654 np->user = &np->data[0]; 655 (void)strcpy(np->user, user); 656 np->group = &np->data[ulen + 1]; 657 (void)strcpy(np->group, group); 658 659 if (S_ISCHR(sp->st_mode) || 660 S_ISBLK(sp->st_mode)) 661 bcfile = 1; 662 663 if (f_flags) { 664 np->flags = &np->data[ulen + glen + 2]; 665 (void)strcpy(np->flags, flags); 666 free(flags); 667 } 668 if (f_lomac) { 669 np->lattr = &np->data[ulen + glen + 2 670 + (f_flags ? flen + 1 : 0)]; 671 (void)strcpy(np->lattr, lattr); 672 free(lattr); 673 } 674 cur->fts_pointer = np; 675 } 676 } 677 ++entries; 678 } 679 680 if (!entries) 681 return; 682 683 d.list = list; 684 d.entries = entries; 685 d.maxlen = maxlen; 686 if (needstats) { 687 d.bcfile = bcfile; 688 d.btotal = btotal; 689 (void)snprintf(buf, sizeof(buf), "%lu", maxblock); 690 d.s_block = strlen(buf); 691 d.s_flags = maxflags; 692 d.s_lattr = maxlattr; 693 d.s_group = maxgroup; 694 (void)snprintf(buf, sizeof(buf), "%lu", maxinode); 695 d.s_inode = strlen(buf); 696 (void)snprintf(buf, sizeof(buf), "%lu", maxnlink); 697 d.s_nlink = strlen(buf); 698 (void)snprintf(buf, sizeof(buf), "%qu", maxsize); 699 d.s_size = strlen(buf); 700 d.s_user = maxuser; 701 } 702 printfcn(&d); 703 output = 1; 704 705 if (f_longform) 706 for (cur = list; cur; cur = cur->fts_link) 707 free(cur->fts_pointer); 708 if (f_lomac) 709 lomac_stop(); 710} 711 712/* 713 * Ordering for mastercmp: 714 * If ordering the argv (fts_level = FTS_ROOTLEVEL) return non-directories 715 * as larger than directories. Within either group, use the sort function. 716 * All other levels use the sort function. Error entries remain unsorted. 717 */ 718static int 719mastercmp(a, b) 720 const FTSENT **a, **b; 721{ 722 int a_info, b_info; 723 724 a_info = (*a)->fts_info; 725 if (a_info == FTS_ERR) 726 return (0); 727 b_info = (*b)->fts_info; 728 if (b_info == FTS_ERR) 729 return (0); 730 731 if (a_info == FTS_NS || b_info == FTS_NS) 732 return (namecmp(*a, *b)); 733 734 if (a_info != b_info && 735 (*a)->fts_level == FTS_ROOTLEVEL && !f_listdir) { 736 if (a_info == FTS_D) 737 return (1); 738 if (b_info == FTS_D) 739 return (-1); 740 } 741 return (sortfcn(*a, *b)); 742} 743 744/* 745 * Makenines() returns (10**n)-1. This is useful for converting a width 746 * into a number that wide in decimal. 747 */ 748static u_quad_t 749makenines(n) 750 u_long n; 751{ 752 u_long i; 753 u_quad_t reg; 754 755 reg = 1; 756 /* Use a loop instead of pow(), since all values of n are small. */ 757 for (i = 0; i < n; i++) 758 reg *= 10; 759 reg--; 760 761 return reg; 762} 763