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 * 4. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * @(#) Copyright (c) 1989, 1993, 1994 The Regents of the University of California. All rights reserved. 33 * @(#)ls.c 8.5 (Berkeley) 4/2/94 34 * $FreeBSD: src/bin/ls/ls.c,v 1.78 2004/06/08 09:30:10 das Exp $ 35 * $DragonFly: src/bin/ls/ls.c,v 1.16 2006/06/19 12:06:47 corecode Exp $ 36 */ 37 38 #include <sys/types.h> 39 #include <sys/stat.h> 40 #include <sys/ioctl.h> 41 42 #include <dirent.h> 43 #include <err.h> 44 #include <errno.h> 45 #include <fts.h> 46 #include <grp.h> 47 #include <inttypes.h> 48 #include <limits.h> 49 #include <locale.h> 50 #include <pwd.h> 51 #include <stdio.h> 52 #include <stdlib.h> 53 #include <string.h> 54 #include <unistd.h> 55 #ifdef COLORLS 56 #include <termcap.h> 57 #include <signal.h> 58 #endif 59 60 #include "ls.h" 61 #include "extern.h" 62 63 /* 64 * Upward approximation of the maximum number of characters needed to 65 * represent a value of integral type t as a string, excluding the 66 * NUL terminator, with provision for a sign. 67 */ 68 #define STRBUF_SIZEOF(t) (1 + CHAR_BIT * sizeof(t) / 3 + 1) 69 70 /* 71 * MAKENINES(n) turns n into (10**n)-1. This is useful for converting a width 72 * into a number that wide in decimal. 73 * XXX: Overflows are not considered. 74 */ 75 #define MAKENINES(n) \ 76 do { \ 77 intmax_t i; \ 78 \ 79 /* Use a loop as all values of n are small. */ \ 80 for (i = 1; n > 0; i *= 10) \ 81 n--; \ 82 n = i - 1; \ 83 } while(0) 84 85 static void display(const FTSENT *, FTSENT *); 86 static int mastercmp(const FTSENT **, const FTSENT **); 87 static void traverse(int, char **, int); 88 89 static void (*printfcn)(const DISPLAY *); 90 static int (*sortfcn)(const FTSENT *, const FTSENT *); 91 92 long blocksize; /* block size units */ 93 int termwidth = 80; /* default terminal width */ 94 95 /* flags */ 96 int f_accesstime; /* use time of last access */ 97 int f_flags; /* show flags associated with a file */ 98 int f_fsmid; /* show FSMID associated with a file */ 99 int f_humanval; /* show human-readable file sizes */ 100 int f_inode; /* print inode */ 101 static int f_kblocks; /* print size in kilobytes */ 102 static int f_listdir; /* list actual directory, not contents */ 103 static int f_listdot; /* list files beginning with . */ 104 int f_longform; /* long listing format */ 105 int f_nonprint; /* show unprintables as ? */ 106 static int f_nosort; /* don't sort output */ 107 int f_notabs; /* don't use tab-separated multi-col output */ 108 static 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 */ 111 static int f_recursive; /* ls subdirectories also */ 112 static int f_reversesort; /* reverse whatever sort is used */ 113 int f_sectime; /* print the real time for all files */ 114 static int f_singlecol; /* use single column output */ 115 int f_size; /* list size in short listing */ 116 int f_slash; /* similar to f_type, but only for dirs */ 117 int f_sortacross; /* sort across rows, not down columns */ 118 int f_statustime; /* use time of last mode change */ 119 static int f_stream; /* stream the output, separate with commas */ 120 static int f_timesort; /* sort by time vice name */ 121 int f_type; /* add type character for non-regular files */ 122 static int f_whiteout; /* show whiteout entries */ 123 #ifdef COLORLS 124 int f_color; /* add type in color for non-regular files */ 125 126 char *ansi_bgcol; /* ANSI sequence to set background colour */ 127 char *ansi_fgcol; /* ANSI sequence to set foreground colour */ 128 char *ansi_coloff; /* ANSI sequence to reset colours */ 129 char *attrs_off; /* ANSI sequence to turn off attributes */ 130 char *enter_bold; /* ANSI sequence to set color to bold mode */ 131 #endif 132 133 static int rval; 134 135 int 136 main(int argc, char *argv[]) 137 { 138 static char dot[] = ".", *dotav[] = {dot, NULL}; 139 struct winsize win; 140 int ch, fts_options, notused; 141 char *p; 142 #ifdef COLORLS 143 char termcapbuf[1024]; /* termcap definition buffer */ 144 char tcapbuf[512]; /* capability buffer */ 145 char *bp = tcapbuf; 146 #endif 147 148 setlocale(LC_ALL, ""); 149 150 /* Terminal defaults to -Cq, non-terminal defaults to -1. */ 151 if (isatty(STDOUT_FILENO)) { 152 termwidth = 80; 153 if ((p = getenv("COLUMNS")) != NULL && *p != '\0') 154 termwidth = atoi(p); 155 else if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &win) != -1 && 156 win.ws_col > 0) 157 termwidth = win.ws_col; 158 f_nonprint = 1; 159 } else { 160 f_singlecol = 1; 161 /* retrieve environment variable, in case of explicit -C */ 162 p = getenv("COLUMNS"); 163 if (p) 164 termwidth = atoi(p); 165 } 166 167 /* Root is -A automatically. */ 168 if (!getuid()) 169 f_listdot = 1; 170 171 fts_options = FTS_PHYSICAL; 172 while ((ch = getopt(argc, argv, "1ABCFGHLPRTWabcdfghiklmnopqrstuwxy")) 173 != -1) { 174 switch (ch) { 175 /* 176 * The -1, -C, -x and -l options all override each other so 177 * shell aliasing works right. 178 */ 179 case '1': 180 f_singlecol = 1; 181 f_longform = 0; 182 f_stream = 0; 183 break; 184 case 'B': 185 f_nonprint = 0; 186 f_octal = 1; 187 f_octal_escape = 0; 188 break; 189 case 'C': 190 f_sortacross = f_longform = f_singlecol = 0; 191 break; 192 case 'l': 193 f_longform = 1; 194 f_singlecol = 0; 195 f_stream = 0; 196 break; 197 case 'x': 198 f_sortacross = 1; 199 f_longform = 0; 200 f_singlecol = 0; 201 break; 202 case 'y': 203 #ifdef _ST_FSMID_PRESENT_ 204 f_fsmid = 1; 205 #endif 206 break; 207 /* The -c and -u options override each other. */ 208 case 'c': 209 f_statustime = 1; 210 f_accesstime = 0; 211 break; 212 case 'u': 213 f_accesstime = 1; 214 f_statustime = 0; 215 break; 216 case 'F': 217 f_type = 1; 218 f_slash = 0; 219 break; 220 case 'H': 221 fts_options |= FTS_COMFOLLOW; 222 break; 223 case 'G': 224 if (setenv("CLICOLOR", "", 1) != 0) 225 warn("setenv: cannot set CLICOLOR"); 226 break; 227 case 'L': 228 fts_options &= ~FTS_PHYSICAL; 229 fts_options |= FTS_LOGICAL; 230 break; 231 case 'P': 232 fts_options &= ~FTS_COMFOLLOW; 233 fts_options &= ~FTS_LOGICAL; 234 fts_options |= FTS_PHYSICAL; 235 break; 236 case 'R': 237 f_recursive = 1; 238 break; 239 case 'a': 240 fts_options |= FTS_SEEDOT; 241 /* FALLTHROUGH */ 242 case 'A': 243 f_listdot = 1; 244 break; 245 /* The -d option turns off the -R option. */ 246 case 'd': 247 f_listdir = 1; 248 f_recursive = 0; 249 break; 250 case 'f': 251 f_nosort = 1; 252 break; 253 case 'g': /* Compatibility with 4.3BSD. */ 254 break; 255 case 'h': 256 f_humanval = 1; 257 break; 258 case 'i': 259 f_inode = 1; 260 break; 261 case 'k': 262 f_humanval = 0; 263 f_kblocks = 1; 264 break; 265 case 'm': 266 f_stream = 1; 267 f_singlecol = 0; 268 f_longform = 0; 269 break; 270 case 'n': 271 f_numericonly = 1; 272 break; 273 case 'o': 274 f_flags = 1; 275 break; 276 case 'p': 277 f_slash = 1; 278 f_type = 1; 279 break; 280 case 'q': 281 f_nonprint = 1; 282 f_octal = 0; 283 f_octal_escape = 0; 284 break; 285 case 'r': 286 f_reversesort = 1; 287 break; 288 case 's': 289 f_size = 1; 290 break; 291 case 'T': 292 f_sectime = 1; 293 break; 294 case 't': 295 f_timesort = 1; 296 break; 297 case 'W': 298 f_whiteout = 1; 299 break; 300 case 'b': 301 f_nonprint = 0; 302 f_octal = 0; 303 f_octal_escape = 1; 304 break; 305 case 'w': 306 f_nonprint = 0; 307 f_octal = 0; 308 f_octal_escape = 0; 309 break; 310 default: 311 case '?': 312 usage(); 313 } 314 } 315 argc -= optind; 316 argv += optind; 317 318 /* Enabling of colours is conditional on the environment. */ 319 if (getenv("CLICOLOR") && 320 (isatty(STDOUT_FILENO) || getenv("CLICOLOR_FORCE"))) 321 #ifdef COLORLS 322 if (tgetent(termcapbuf, getenv("TERM")) == 1) { 323 ansi_fgcol = tgetstr("AF", &bp); 324 ansi_bgcol = tgetstr("AB", &bp); 325 attrs_off = tgetstr("me", &bp); 326 enter_bold = tgetstr("md", &bp); 327 328 /* To switch colours off use 'op' if 329 * available, otherwise use 'oc', or 330 * don't do colours at all. */ 331 ansi_coloff = tgetstr("op", &bp); 332 if (!ansi_coloff) 333 ansi_coloff = tgetstr("oc", &bp); 334 if (ansi_fgcol && ansi_bgcol && ansi_coloff) 335 f_color = 1; 336 } 337 #else 338 fprintf(stderr, "Color support not compiled in.\n"); 339 #endif /*COLORLS*/ 340 341 #ifdef COLORLS 342 if (f_color) { 343 /* 344 * We can't put tabs and color sequences together: 345 * column number will be incremented incorrectly 346 * for "stty oxtabs" mode. 347 */ 348 f_notabs = 1; 349 signal(SIGINT, colorquit); 350 signal(SIGQUIT, colorquit); 351 parsecolors(getenv("LSCOLORS")); 352 } 353 #endif 354 355 /* 356 * If not -F, -i, -l, -s or -t options, don't require stat 357 * information, unless in color mode in which case we do 358 * need this to determine which colors to display. 359 */ 360 if (!f_inode && !f_longform && !f_size && !f_timesort && !f_type 361 #ifdef COLORLS 362 && !f_color 363 #endif 364 ) 365 fts_options |= FTS_NOSTAT; 366 367 /* 368 * If not -F, -d or -l options, follow any symbolic links listed on 369 * the command line. 370 */ 371 if (!f_longform && !f_listdir && !f_type) 372 fts_options |= FTS_COMFOLLOW; 373 374 /* 375 * If -W, show whiteout entries 376 */ 377 #ifdef FTS_WHITEOUT 378 if (f_whiteout) 379 fts_options |= FTS_WHITEOUT; 380 #endif 381 382 /* If -l or -s, figure out block size. */ 383 if (f_longform || f_size) { 384 if (f_kblocks) 385 blocksize = 2; 386 else { 387 getbsize(¬used, &blocksize); 388 blocksize /= 512; 389 } 390 } 391 /* Select a sort function. */ 392 if (f_reversesort) { 393 if (!f_timesort) 394 sortfcn = revnamecmp; 395 else if (f_accesstime) 396 sortfcn = revacccmp; 397 else if (f_statustime) 398 sortfcn = revstatcmp; 399 else /* Use modification time. */ 400 sortfcn = revmodcmp; 401 } else { 402 if (!f_timesort) 403 sortfcn = namecmp; 404 else if (f_accesstime) 405 sortfcn = acccmp; 406 else if (f_statustime) 407 sortfcn = statcmp; 408 else /* Use modification time. */ 409 sortfcn = modcmp; 410 } 411 412 /* Select a print function. */ 413 if (f_singlecol) 414 printfcn = printscol; 415 else if (f_longform) 416 printfcn = printlong; 417 else if (f_stream) 418 printfcn = printstream; 419 else 420 printfcn = printcol; 421 422 if (argc) 423 traverse(argc, argv, fts_options); 424 else 425 traverse(1, dotav, fts_options); 426 exit(rval); 427 } 428 429 static int output; /* If anything output. */ 430 431 /* 432 * Traverse() walks the logical directory structure specified by the argv list 433 * in the order specified by the mastercmp() comparison function. During the 434 * traversal it passes linked lists of structures to display() which represent 435 * a superset (may be exact set) of the files to be displayed. 436 */ 437 static void 438 traverse(int argc, char *argv[], int options) 439 { 440 FTS *ftsp; 441 FTSENT *p, *chp; 442 int ch_options, error; 443 444 if ((ftsp = 445 fts_open(argv, options, f_nosort ? NULL : mastercmp)) == NULL) 446 err(1, "fts_open"); 447 448 /* 449 * We ignore errors from fts_children here since they will be 450 * replicated and signalled on the next call to fts_read() below. 451 */ 452 chp = fts_children(ftsp, 0); 453 if (chp != NULL) 454 display(NULL, chp); 455 if (f_listdir) { 456 fts_close(ftsp); 457 return; 458 } 459 460 /* 461 * If not recursing down this tree and don't need stat info, just get 462 * the names. 463 */ 464 ch_options = !f_recursive && options & FTS_NOSTAT ? FTS_NAMEONLY : 0; 465 466 while ((p = fts_read(ftsp)) != NULL) 467 switch (p->fts_info) { 468 case FTS_DC: 469 warnx("%s: directory causes a cycle", p->fts_name); 470 break; 471 case FTS_DNR: 472 case FTS_ERR: 473 warnx("%s: %s", p->fts_name, strerror(p->fts_errno)); 474 rval = 1; 475 break; 476 case FTS_D: 477 if (p->fts_level != FTS_ROOTLEVEL && 478 p->fts_name[0] == '.' && !f_listdot) 479 break; 480 481 /* 482 * If already output something, put out a newline as 483 * a separator. If multiple arguments, precede each 484 * directory with its name. 485 */ 486 if (output) { 487 putchar('\n'); 488 printname(p->fts_path); 489 puts(":"); 490 } else if (argc > 1) { 491 printname(p->fts_path); 492 puts(":"); 493 output = 1; 494 } 495 chp = fts_children(ftsp, ch_options); 496 display(p, chp); 497 498 if (!f_recursive && chp != NULL) 499 fts_set(ftsp, p, FTS_SKIP); 500 break; 501 default: 502 break; 503 } 504 error = errno; 505 fts_close(ftsp); 506 errno = error; 507 if (errno) 508 err(1, "fts_read"); 509 } 510 511 /* 512 * Display() takes a linked list of FTSENT structures and passes the list 513 * along with any other necessary information to the print function. P 514 * points to the parent directory of the display list. 515 */ 516 static void 517 display(const FTSENT *p, FTSENT *list) 518 { 519 struct stat *sp; 520 DISPLAY d; 521 FTSENT *cur; 522 NAMES *np; 523 off_t maxsize; 524 u_long btotal, maxlen; 525 int64_t maxblock; 526 ino_t maxinode; 527 nlink_t maxnlink; 528 int bcfile, maxflags; 529 gid_t maxgroup; 530 uid_t maxuser; 531 size_t fsmidlen, flen, ulen, glen; 532 char *initmax; 533 int entries, needstats; 534 const char *user, *group; 535 char *flags; 536 int64_t fsmid; 537 char buf[STRBUF_SIZEOF(u_quad_t) + 1]; 538 char ngroup[STRBUF_SIZEOF(uid_t) + 1]; 539 char nuser[STRBUF_SIZEOF(gid_t) + 1]; 540 541 needstats = f_inode || f_longform || f_size; 542 flen = 0; 543 btotal = 0; 544 initmax = getenv("LS_COLWIDTHS"); 545 /* Fields match -lios order. New ones should be added at the end. */ 546 maxblock = maxinode = maxlen = maxnlink = 547 maxuser = maxgroup = maxflags = maxsize = 0; 548 if (initmax != NULL && *initmax != '\0') { 549 char *initmax2, *jinitmax; 550 int ninitmax; 551 552 /* Fill-in "::" as "0:0:0" for the sake of scanf. */ 553 jinitmax = malloc(strlen(initmax) * 2 + 2); 554 if (jinitmax == NULL) 555 err(1, "malloc"); 556 initmax2 = jinitmax; 557 if (*initmax == ':') 558 strcpy(initmax2, "0:"), initmax2 += 2; 559 else 560 *initmax2++ = *initmax, *initmax2 = '\0'; 561 for (initmax++; *initmax != '\0'; initmax++) { 562 if (initmax[-1] == ':' && initmax[0] == ':') { 563 *initmax2++ = '0'; 564 *initmax2++ = initmax[0]; 565 initmax2[1] = '\0'; 566 } else { 567 *initmax2++ = initmax[0]; 568 initmax2[1] = '\0'; 569 } 570 } 571 if (initmax2[-1] == ':') 572 strcpy(initmax2, "0"); 573 574 ninitmax = sscanf(jinitmax, 575 " %llu : %lli : %u : %i : %i : %i : %llu : %lu ", 576 &maxinode, &maxblock, &maxnlink, &maxuser, 577 &maxgroup, &maxflags, &maxsize, &maxlen); 578 f_notabs = 1; 579 switch (ninitmax) { 580 case 0: 581 maxinode = 0; 582 /* FALLTHROUGH */ 583 case 1: 584 maxblock = 0; 585 /* FALLTHROUGH */ 586 case 2: 587 maxnlink = 0; 588 /* FALLTHROUGH */ 589 case 3: 590 maxuser = 0; 591 /* FALLTHROUGH */ 592 case 4: 593 maxgroup = 0; 594 /* FALLTHROUGH */ 595 case 5: 596 maxflags = 0; 597 /* FALLTHROUGH */ 598 case 6: 599 maxsize = 0; 600 /* FALLTHROUGH */ 601 case 7: 602 maxlen = 0; 603 /* FALLTHROUGH */ 604 #ifdef COLORLS 605 if (!f_color) 606 #endif 607 f_notabs = 0; 608 /* FALLTHROUGH */ 609 default: 610 break; 611 } 612 MAKENINES(maxinode); 613 MAKENINES(maxblock); 614 MAKENINES(maxnlink); 615 MAKENINES(maxsize); 616 free(jinitmax); 617 } 618 bcfile = 0; 619 flags = NULL; 620 for (cur = list, entries = 0; cur; cur = cur->fts_link) { 621 if (cur->fts_info == FTS_ERR || cur->fts_info == FTS_NS) { 622 warnx("%s: %s", 623 cur->fts_name, strerror(cur->fts_errno)); 624 cur->fts_number = NO_PRINT; 625 rval = 1; 626 continue; 627 } 628 /* 629 * P is NULL if list is the argv list, to which different rules 630 * apply. 631 */ 632 if (p == NULL) { 633 /* Directories will be displayed later. */ 634 if (cur->fts_info == FTS_D && !f_listdir) { 635 cur->fts_number = NO_PRINT; 636 continue; 637 } 638 } else { 639 /* Only display dot file if -a/-A set. */ 640 if (cur->fts_name[0] == '.' && !f_listdot) { 641 cur->fts_number = NO_PRINT; 642 continue; 643 } 644 } 645 if (cur->fts_namelen > maxlen) 646 maxlen = cur->fts_namelen; 647 if (f_octal || f_octal_escape) { 648 u_long t = len_octal(cur->fts_name, cur->fts_namelen); 649 650 if (t > maxlen) 651 maxlen = t; 652 } 653 if (needstats) { 654 sp = cur->fts_statp; 655 if (sp->st_blocks > maxblock) 656 maxblock = sp->st_blocks; 657 if (sp->st_ino > maxinode) 658 maxinode = sp->st_ino; 659 if (sp->st_nlink > maxnlink) 660 maxnlink = sp->st_nlink; 661 if (sp->st_size > maxsize) 662 maxsize = sp->st_size; 663 664 btotal += sp->st_blocks; 665 if (f_longform) { 666 if (f_numericonly) { 667 snprintf(nuser, sizeof(nuser), 668 "%u", sp->st_uid); 669 snprintf(ngroup, sizeof(ngroup), 670 "%u", sp->st_gid); 671 user = nuser; 672 group = ngroup; 673 } else { 674 user = user_from_uid(sp->st_uid, 0); 675 group = group_from_gid(sp->st_gid, 0); 676 } 677 if ((ulen = strlen(user)) > maxuser) 678 maxuser = ulen; 679 if ((glen = strlen(group)) > maxgroup) 680 maxgroup = glen; 681 if (f_flags) { 682 flags = fflagstostr(sp->st_flags); 683 if (flags != NULL && *flags == '\0') { 684 free(flags); 685 flags = strdup("-"); 686 } 687 if (flags == NULL) 688 err(1, "flagstostr"); 689 flen = strlen(flags); 690 if (flen > (size_t)maxflags) 691 maxflags = flen; 692 } else { 693 flen = 0; 694 } 695 #ifdef _ST_FSMID_PRESENT_ 696 if (f_fsmid) { 697 fsmid = sp->st_fsmid; 698 fsmidlen = 18; 699 } else { 700 fsmid = 0; 701 fsmidlen = 0; 702 } 703 #else 704 fsmidlen = 0; 705 #endif 706 707 if ((np = malloc(sizeof(NAMES) + 708 ulen + glen + flen + fsmidlen + 4)) == NULL) 709 err(1, "malloc"); 710 711 np->user = &np->data[0]; 712 strcpy(np->user, user); 713 np->group = &np->data[ulen + 1]; 714 strcpy(np->group, group); 715 716 if (S_ISCHR(sp->st_mode) || 717 S_ISBLK(sp->st_mode)) 718 bcfile = 1; 719 720 if (f_flags) { 721 np->flags = &np->data[ulen + glen + 2]; 722 strcpy(np->flags, flags); 723 free(flags); 724 } 725 #ifdef _ST_FSMID_PRESENT_ 726 if (f_fsmid) { 727 np->fsmid = np->data + ulen + glen + flen + 3; 728 snprintf(np->fsmid, fsmidlen + 1, 729 "%016llx", fsmid); 730 } 731 #endif 732 cur->fts_pointer = np; 733 } 734 } 735 ++entries; 736 } 737 738 /* 739 * If there are no entries to display, we normally stop right 740 * here. However, we must continue if we have to display the 741 * total block count. In this case, we display the total only 742 * on the second (p != NULL) pass. 743 */ 744 if (!entries && (!(f_longform || f_size) || p == NULL)) 745 return; 746 747 d.list = list; 748 d.entries = entries; 749 d.maxlen = maxlen; 750 if (needstats) { 751 d.bcfile = bcfile; 752 d.btotal = btotal; 753 snprintf(buf, sizeof(buf), "%lli", maxblock); 754 d.s_block = strlen(buf); 755 d.s_flags = maxflags; 756 d.s_group = maxgroup; 757 snprintf(buf, sizeof(buf), "%llu", maxinode); 758 d.s_inode = strlen(buf); 759 snprintf(buf, sizeof(buf), "%u", maxnlink); 760 d.s_nlink = strlen(buf); 761 snprintf(buf, sizeof(buf), "%llu", maxsize); 762 d.s_size = strlen(buf); 763 d.s_user = maxuser; 764 } 765 printfcn(&d); 766 output = 1; 767 768 if (f_longform) 769 for (cur = list; cur; cur = cur->fts_link) 770 free(cur->fts_pointer); 771 } 772 773 /* 774 * Ordering for mastercmp: 775 * If ordering the argv (fts_level = FTS_ROOTLEVEL) return non-directories 776 * as larger than directories. Within either group, use the sort function. 777 * All other levels use the sort function. Error entries remain unsorted. 778 */ 779 static int 780 mastercmp(const FTSENT **a, const FTSENT **b) 781 { 782 int a_info, b_info; 783 784 a_info = (*a)->fts_info; 785 if (a_info == FTS_ERR) 786 return (0); 787 b_info = (*b)->fts_info; 788 if (b_info == FTS_ERR) 789 return (0); 790 791 if (a_info == FTS_NS || b_info == FTS_NS) 792 return (namecmp(*a, *b)); 793 794 if (a_info != b_info && 795 (*a)->fts_level == FTS_ROOTLEVEL && !f_listdir) { 796 if (a_info == FTS_D) 797 return (1); 798 if (b_info == FTS_D) 799 return (-1); 800 } 801 return (sortfcn(*a, *b)); 802 } 803