1 /* $NetBSD: ftree.c,v 1.35 2007/04/29 20:23:34 msaitoh Exp $ */ 2 3 /*- 4 * Copyright (c) 1992 Keith Muller. 5 * Copyright (c) 1992, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * Keith Muller of the University of California, San Diego. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 /*- 37 * Copyright (c) 2001 The NetBSD Foundation, Inc. 38 * All rights reserved. 39 * 40 * This code is derived from software contributed to The NetBSD Foundation 41 * by Luke Mewburn of Wasabi Systems. 42 * 43 * Redistribution and use in source and binary forms, with or without 44 * modification, are permitted provided that the following conditions 45 * are met: 46 * 1. Redistributions of source code must retain the above copyright 47 * notice, this list of conditions and the following disclaimer. 48 * 2. Redistributions in binary form must reproduce the above copyright 49 * notice, this list of conditions and the following disclaimer in the 50 * documentation and/or other materials provided with the distribution. 51 * 3. All advertising materials mentioning features or use of this software 52 * must display the following acknowledgement: 53 * This product includes software developed by the NetBSD 54 * Foundation, Inc. and its contributors. 55 * 4. Neither the name of The NetBSD Foundation nor the names of its 56 * contributors may be used to endorse or promote products derived 57 * from this software without specific prior written permission. 58 * 59 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 60 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 61 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 62 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 63 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 64 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 65 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 66 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 67 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 68 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 69 * POSSIBILITY OF SUCH DAMAGE. 70 */ 71 72 #if HAVE_NBTOOL_CONFIG_H 73 #include "nbtool_config.h" 74 #endif 75 76 #include <sys/cdefs.h> 77 #if !defined(lint) 78 #if 0 79 static char sccsid[] = "@(#)ftree.c 8.2 (Berkeley) 4/18/94"; 80 #else 81 __RCSID("$NetBSD: ftree.c,v 1.35 2007/04/29 20:23:34 msaitoh Exp $"); 82 #endif 83 #endif /* not lint */ 84 85 #include <sys/types.h> 86 #include <sys/time.h> 87 #include <sys/stat.h> 88 #include <sys/param.h> 89 #include <ctype.h> 90 #include <errno.h> 91 #include <fts.h> 92 #include <stdio.h> 93 #include <stdlib.h> 94 #include <string.h> 95 #include <unistd.h> 96 #include "pax.h" 97 #include "ftree.h" 98 #include "extern.h" 99 #include "options.h" 100 #ifndef SMALL 101 #include "mtree.h" 102 #endif /* SMALL */ 103 104 /* 105 * routines to interface with the fts library function. 106 * 107 * file args supplied to pax are stored on a single linked list (of type FTREE) 108 * and given to fts to be processed one at a time. pax "selects" files from 109 * the expansion of each arg into the corresponding file tree (if the arg is a 110 * directory, otherwise the node itself is just passed to pax). The selection 111 * is modified by the -n and -u flags. The user is informed when a specific 112 * file arg does not generate any selected files. -n keeps expanding the file 113 * tree arg until one of its files is selected, then skips to the next file 114 * arg. when the user does not supply the file trees as command line args to 115 * pax, they are read from stdin 116 */ 117 118 static FTS *ftsp = NULL; /* current FTS handle */ 119 static int ftsopts; /* options to be used on fts_open */ 120 static char *farray[2]; /* array for passing each arg to fts */ 121 static FTREE *fthead = NULL; /* head of linked list of file args */ 122 static FTREE *fttail = NULL; /* tail of linked list of file args */ 123 static FTREE *ftcur = NULL; /* current file arg being processed */ 124 static FTSENT *ftent = NULL; /* current file tree entry */ 125 static int ftree_skip; /* when set skip to next file arg */ 126 #ifndef SMALL 127 static NODE *ftnode = NULL; /* mtree(8) specfile; used by -M */ 128 #endif /* SMALL */ 129 130 static int ftree_arg(void); 131 132 #ifdef NET2_FTS 133 #define FTS_ERRNO(x) errno 134 #else 135 #define FTS_ERRNO(x) (x)->fts_errno 136 #endif 137 138 /* 139 * ftree_start() 140 * initialize the options passed to fts_open() during this run of pax 141 * options are based on the selection of pax options by the user 142 * fts_start() also calls fts_arg() to open the first valid file arg. We 143 * also attempt to reset directory access times when -t (tflag) is set. 144 * Return: 145 * 0 if there is at least one valid file arg to process, -1 otherwise 146 */ 147 148 int 149 ftree_start() 150 { 151 152 #ifndef SMALL 153 /* 154 * if -M is given, the list of filenames on stdin is actually 155 * an mtree(8) specfile, so parse the specfile into a NODE * 156 * tree at ftnode, for use by next_file() 157 */ 158 if (Mflag) { 159 if (fthead != NULL) { 160 tty_warn(1, 161 "The -M flag is only supported when reading file list from stdin"); 162 return -1; 163 } 164 ftnode = spec(stdin); 165 if (ftnode != NULL && 166 (ftnode->type != F_DIR || strcmp(ftnode->name, ".") != 0)) { 167 tty_warn(1, 168 "First node of specfile is not `.' directory"); 169 return -1; 170 } 171 return 0; 172 } 173 #endif /* SMALL */ 174 175 /* 176 * set up the operation mode of fts, open the first file arg. We must 177 * use FTS_NOCHDIR, as the user may have to open multiple archives and 178 * if fts did a chdir off into the boondocks, we may create an archive 179 * volume in an place where the user did not expect to. 180 */ 181 ftsopts = FTS_NOCHDIR; 182 183 /* 184 * optional user flags that effect file traversal 185 * -H command line symlink follow only (half follow) 186 * -L follow sylinks (logical) 187 * -P do not follow sylinks (physical). This is the default. 188 * -X do not cross over mount points 189 * -t preserve access times on files read. 190 * -n select only the first member of a file tree when a match is found 191 * -d do not extract subtrees rooted at a directory arg. 192 */ 193 if (Lflag) 194 ftsopts |= FTS_LOGICAL; 195 else 196 ftsopts |= FTS_PHYSICAL; 197 if (Hflag) 198 #ifdef NET2_FTS 199 tty_warn(0, "The -H flag is not supported on this version"); 200 #else 201 ftsopts |= FTS_COMFOLLOW; 202 #endif 203 if (Xflag) 204 ftsopts |= FTS_XDEV; 205 206 if ((fthead == NULL) && ((farray[0] = malloc(PAXPATHLEN+2)) == NULL)) { 207 tty_warn(1, "Unable to allocate memory for file name buffer"); 208 return -1; 209 } 210 211 if (ftree_arg() < 0) 212 return -1; 213 if (tflag && (atdir_start() < 0)) 214 return -1; 215 return 0; 216 } 217 218 /* 219 * ftree_add() 220 * add the arg to the linked list of files to process. Each will be 221 * processed by fts one at a time 222 * Return: 223 * 0 if added to the linked list, -1 if failed 224 */ 225 226 int 227 ftree_add(char *str, int isdir) 228 { 229 FTREE *ft; 230 int len; 231 232 /* 233 * simple check for bad args 234 */ 235 if ((str == NULL) || (*str == '\0')) { 236 tty_warn(0, "Invalid file name argument"); 237 return -1; 238 } 239 240 /* 241 * allocate FTREE node and add to the end of the linked list (args are 242 * processed in the same order they were passed to pax). Get rid of any 243 * trailing / the user may pass us. (watch out for / by itself). 244 */ 245 if ((ft = (FTREE *)malloc(sizeof(FTREE))) == NULL) { 246 tty_warn(0, "Unable to allocate memory for filename"); 247 return -1; 248 } 249 250 if (((len = strlen(str) - 1) > 0) && (str[len] == '/')) 251 str[len] = '\0'; 252 ft->fname = str; 253 ft->refcnt = -isdir; 254 ft->fow = NULL; 255 if (fthead == NULL) { 256 fttail = fthead = ft; 257 return 0; 258 } 259 fttail->fow = ft; 260 fttail = ft; 261 return 0; 262 } 263 264 /* 265 * ftree_sel() 266 * this entry has been selected by pax. bump up reference count and handle 267 * -n and -d processing. 268 */ 269 270 void 271 ftree_sel(ARCHD *arcn) 272 { 273 /* 274 * set reference bit for this pattern. This linked list is only used 275 * when file trees are supplied pax as args. The list is not used when 276 * the trees are read from stdin. 277 */ 278 if (ftcur != NULL) 279 ftcur->refcnt = 1; 280 281 /* 282 * if -n we are done with this arg, force a skip to the next arg when 283 * pax asks for the next file in next_file(). 284 * if -M we don't use fts(3), so the rest of this function is moot. 285 * if -d we tell fts only to match the directory (if the arg is a dir) 286 * and not the entire file tree rooted at that point. 287 */ 288 if (nflag) 289 ftree_skip = 1; 290 291 if (Mflag || !dflag || (arcn->type != PAX_DIR)) 292 return; 293 294 if (ftent != NULL) 295 (void)fts_set(ftsp, ftent, FTS_SKIP); 296 } 297 298 /* 299 * ftree_chk() 300 * called at end on pax execution. Prints all those file args that did not 301 * have a selected member (reference count still 0) 302 */ 303 304 void 305 ftree_chk(void) 306 { 307 FTREE *ft; 308 int wban = 0; 309 310 /* 311 * make sure all dir access times were reset. 312 */ 313 if (tflag) 314 atdir_end(); 315 316 /* 317 * walk down list and check reference count. Print out those members 318 * that never had a match 319 */ 320 for (ft = fthead; ft != NULL; ft = ft->fow) { 321 if (ft->refcnt != 0) 322 continue; 323 if (wban == 0) { 324 tty_warn(1, 325 "WARNING! These file names were not selected:"); 326 ++wban; 327 } 328 (void)fprintf(stderr, "%s\n", ft->fname); 329 } 330 } 331 332 /* 333 * ftree_arg() 334 * Get the next file arg for fts to process. Can be from either the linked 335 * list or read from stdin when the user did not them as args to pax. Each 336 * arg is processed until the first successful fts_open(). 337 * Return: 338 * 0 when the next arg is ready to go, -1 if out of file args (or EOF on 339 * stdin). 340 */ 341 342 static int 343 ftree_arg(void) 344 { 345 /* 346 * close off the current file tree 347 */ 348 if (ftsp != NULL) { 349 (void)fts_close(ftsp); 350 ftsp = NULL; 351 } 352 353 /* 354 * keep looping until we get a valid file tree to process. Stop when we 355 * reach the end of the list (or get an eof on stdin) 356 */ 357 for(;;) { 358 if (fthead == NULL) { 359 int i, c = EOF; 360 /* 361 * the user didn't supply any args, get the file trees 362 * to process from stdin; 363 */ 364 for (i = 0; i < PAXPATHLEN + 2; i++) { 365 c = getchar(); 366 if (c == EOF) 367 break; 368 else if (c == sep) { 369 if (i != 0) 370 break; 371 } else 372 farray[0][i] = c; 373 } 374 if (i == 0) 375 return -1; 376 farray[0][i] = '\0'; 377 } else { 378 /* 379 * the user supplied the file args as arguments to pax 380 */ 381 if (ftcur == NULL) 382 ftcur = fthead; 383 else if ((ftcur = ftcur->fow) == NULL) 384 return -1; 385 386 if (ftcur->refcnt < 0) { 387 /* 388 * chdir entry. 389 * Change directory and retry loop. 390 */ 391 if (ar_dochdir(ftcur->fname)) 392 return (-1); 393 continue; 394 } 395 farray[0] = ftcur->fname; 396 } 397 398 /* 399 * watch it, fts wants the file arg stored in a array of char 400 * ptrs, with the last one a null. we use a two element array 401 * and set farray[0] to point at the buffer with the file name 402 * in it. We cannot pass all the file args to fts at one shot 403 * as we need to keep a handle on which file arg generates what 404 * files (the -n and -d flags need this). If the open is 405 * successful, return a 0. 406 */ 407 if ((ftsp = fts_open(farray, ftsopts, NULL)) != NULL) 408 break; 409 } 410 return 0; 411 } 412 413 /* 414 * next_file() 415 * supplies the next file to process in the supplied archd structure. 416 * Return: 417 * 0 when contents of arcn have been set with the next file, -1 when done. 418 */ 419 420 int 421 next_file(ARCHD *arcn) 422 { 423 #ifndef SMALL 424 static char curdir[PAXPATHLEN+2], curpath[PAXPATHLEN+2]; 425 static int curdirlen; 426 427 struct stat statbuf; 428 FTSENT Mftent; 429 #endif /* SMALL */ 430 int cnt; 431 time_t atime, mtime; 432 char *curlink; 433 #define MFTENT_DUMMY_DEV UINT_MAX 434 435 curlink = NULL; 436 #ifndef SMALL 437 /* 438 * if parsing an mtree(8) specfile, build up `dummy' ftsent 439 * from specfile info, and jump below to complete setup of arcn. 440 */ 441 if (Mflag) { 442 int skipoptional; 443 444 next_ftnode: 445 skipoptional = 0; 446 if (ftnode == NULL) /* tree is empty */ 447 return (-1); 448 449 /* get current name */ 450 if (snprintf(curpath, sizeof(curpath), "%s%s%s", 451 curdir, curdirlen ? "/" : "", ftnode->name) 452 >= sizeof(curpath)) { 453 tty_warn(1, "line %lu: %s: %s", (u_long)ftnode->lineno, 454 curdir, strerror(ENAMETOOLONG)); 455 return (-1); 456 } 457 ftnode->flags |= F_VISIT; /* mark node visited */ 458 459 /* construct dummy FTSENT */ 460 Mftent.fts_path = curpath; 461 Mftent.fts_statp = &statbuf; 462 Mftent.fts_pointer = ftnode; 463 ftent = &Mftent; 464 /* look for existing file */ 465 if (lstat(Mftent.fts_path, &statbuf) == -1) { 466 if (ftnode->flags & F_OPT) 467 skipoptional = 1; 468 469 /* missing: fake up stat info */ 470 memset(&statbuf, 0, sizeof(statbuf)); 471 statbuf.st_dev = MFTENT_DUMMY_DEV; 472 statbuf.st_ino = ftnode->lineno; 473 statbuf.st_size = 0; 474 #define NODETEST(t, m) \ 475 if (!(t)) { \ 476 tty_warn(1, "line %lu: %s: %s not specified", \ 477 (u_long)ftnode->lineno, \ 478 ftent->fts_path, m); \ 479 return -1; \ 480 } 481 statbuf.st_mode = nodetoino(ftnode->type); 482 NODETEST(ftnode->flags & F_TYPE, "type"); 483 NODETEST(ftnode->flags & F_MODE, "mode"); 484 if (!(ftnode->flags & F_TIME)) 485 statbuf.st_mtime = starttime; 486 NODETEST(ftnode->flags & (F_GID | F_GNAME), "group"); 487 NODETEST(ftnode->flags & (F_UID | F_UNAME), "user"); 488 if (ftnode->type == F_BLOCK || ftnode->type == F_CHAR) 489 NODETEST(ftnode->flags & F_DEV, 490 "device number"); 491 if (ftnode->type == F_LINK) 492 NODETEST(ftnode->flags & F_SLINK, "symlink"); 493 /* don't require F_FLAGS or F_SIZE */ 494 #undef NODETEST 495 } else { 496 if (ftnode->flags & F_TYPE && nodetoino(ftnode->type) 497 != (statbuf.st_mode & S_IFMT)) { 498 tty_warn(1, 499 "line %lu: %s: type mismatch: specfile %s, tree %s", 500 (u_long)ftnode->lineno, ftent->fts_path, 501 inotype(nodetoino(ftnode->type)), 502 inotype(statbuf.st_mode)); 503 return -1; 504 } 505 if (ftnode->type == F_DIR && (ftnode->flags & F_OPT)) 506 skipoptional = 1; 507 } 508 /* 509 * override settings with those from specfile 510 */ 511 if (ftnode->flags & F_MODE) { 512 statbuf.st_mode &= ~ALLPERMS; 513 statbuf.st_mode |= (ftnode->st_mode & ALLPERMS); 514 } 515 if (ftnode->flags & (F_GID | F_GNAME)) 516 statbuf.st_gid = ftnode->st_gid; 517 if (ftnode->flags & (F_UID | F_UNAME)) 518 statbuf.st_uid = ftnode->st_uid; 519 #if HAVE_STRUCT_STAT_ST_FLAGS 520 if (ftnode->flags & F_FLAGS) 521 statbuf.st_flags = ftnode->st_flags; 522 #endif 523 if (ftnode->flags & F_TIME) 524 #if BSD4_4 && !HAVE_NBTOOL_CONFIG_H 525 statbuf.st_mtimespec = ftnode->st_mtimespec; 526 #else 527 statbuf.st_mtime = ftnode->st_mtimespec.tv_sec; 528 #endif 529 if (ftnode->flags & F_DEV) 530 statbuf.st_rdev = ftnode->st_rdev; 531 if (ftnode->flags & F_SLINK) 532 curlink = ftnode->slink; 533 /* ignore F_SIZE */ 534 535 /* 536 * find next node 537 */ 538 if (ftnode->type == F_DIR && ftnode->child != NULL) { 539 /* directory with unseen child */ 540 ftnode = ftnode->child; 541 curdirlen = strlcpy(curdir, curpath, sizeof(curdir)); 542 } else do { 543 if (ftnode->next != NULL) { 544 /* next node at current level */ 545 ftnode = ftnode->next; 546 } else { /* move back to parent */ 547 /* reset time only on first cd.. */ 548 if (Mftent.fts_pointer == ftnode && tflag && 549 (get_atdir(MFTENT_DUMMY_DEV, ftnode->lineno, 550 &mtime, &atime) == 0)) { 551 set_ftime(ftent->fts_path, 552 mtime, atime, 1); 553 } 554 ftnode = ftnode->parent; 555 if (ftnode->parent == ftnode) 556 ftnode = NULL; 557 else { 558 curdirlen -= strlen(ftnode->name) + 1; 559 curdir[curdirlen] = '\0'; 560 } 561 } 562 } while (ftnode != NULL && ftnode->flags & F_VISIT); 563 if (skipoptional) /* skip optional entries */ 564 goto next_ftnode; 565 goto got_ftent; 566 } 567 #endif /* SMALL */ 568 569 /* 570 * ftree_sel() might have set the ftree_skip flag if the user has the 571 * -n option and a file was selected from this file arg tree. (-n says 572 * only one member is matched for each pattern) ftree_skip being 1 573 * forces us to go to the next arg now. 574 */ 575 if (ftree_skip) { 576 /* 577 * clear and go to next arg 578 */ 579 ftree_skip = 0; 580 if (ftree_arg() < 0) 581 return -1; 582 } 583 584 if (ftsp == NULL) 585 return -1; 586 /* 587 * loop until we get a valid file to process 588 */ 589 for(;;) { 590 if ((ftent = fts_read(ftsp)) == NULL) { 591 /* 592 * out of files in this tree, go to next arg, if none 593 * we are done 594 */ 595 if (ftree_arg() < 0) 596 return -1; 597 continue; 598 } 599 600 /* 601 * handle each type of fts_read() flag 602 */ 603 switch(ftent->fts_info) { 604 case FTS_D: 605 case FTS_DEFAULT: 606 case FTS_F: 607 case FTS_SL: 608 case FTS_SLNONE: 609 /* 610 * these are all ok 611 */ 612 break; 613 case FTS_DP: 614 /* 615 * already saw this directory. If the user wants file 616 * access times reset, we use this to restore the 617 * access time for this directory since this is the 618 * last time we will see it in this file subtree 619 * remember to force the time (this is -t on a read 620 * directory, not a created directory). 621 */ 622 if (!tflag || (get_atdir( 623 #ifdef NET2_FTS 624 ftent->fts_statb.st_dev, ftent->fts_statb.st_ino, 625 #else 626 ftent->fts_statp->st_dev, ftent->fts_statp->st_ino, 627 #endif 628 &mtime, &atime) < 0)) 629 continue; 630 set_ftime(ftent->fts_path, mtime, atime, 1); 631 continue; 632 case FTS_DC: 633 /* 634 * fts claims a file system cycle 635 */ 636 tty_warn(1,"File system cycle found at %s", 637 ftent->fts_path); 638 continue; 639 case FTS_DNR: 640 syswarn(1, FTS_ERRNO(ftent), 641 "Unable to read directory %s", ftent->fts_path); 642 continue; 643 case FTS_ERR: 644 syswarn(1, FTS_ERRNO(ftent), 645 "File system traversal error"); 646 continue; 647 case FTS_NS: 648 case FTS_NSOK: 649 syswarn(1, FTS_ERRNO(ftent), 650 "Unable to access %s", ftent->fts_path); 651 continue; 652 } 653 654 #ifndef SMALL 655 got_ftent: 656 #endif /* SMALL */ 657 /* 658 * ok got a file tree node to process. copy info into arcn 659 * structure (initialize as required) 660 */ 661 arcn->skip = 0; 662 arcn->pad = 0; 663 arcn->ln_nlen = 0; 664 arcn->ln_name[0] = '\0'; 665 #ifdef NET2_FTS 666 arcn->sb = ftent->fts_statb; 667 #else 668 arcn->sb = *(ftent->fts_statp); 669 #endif 670 671 /* 672 * file type based set up and copy into the arcn struct 673 * SIDE NOTE: 674 * we try to reset the access time on all files and directories 675 * we may read when the -t flag is specified. files are reset 676 * when we close them after copying. we reset the directories 677 * when we are done with their file tree (we also clean up at 678 * end in case we cut short a file tree traversal). However 679 * there is no way to reset access times on symlinks. 680 */ 681 switch(S_IFMT & arcn->sb.st_mode) { 682 case S_IFDIR: 683 arcn->type = PAX_DIR; 684 if (!tflag) 685 break; 686 add_atdir(ftent->fts_path, arcn->sb.st_dev, 687 arcn->sb.st_ino, arcn->sb.st_mtime, 688 arcn->sb.st_atime); 689 break; 690 case S_IFCHR: 691 arcn->type = PAX_CHR; 692 break; 693 case S_IFBLK: 694 arcn->type = PAX_BLK; 695 break; 696 case S_IFREG: 697 /* 698 * only regular files with have data to store on the 699 * archive. all others will store a zero length skip. 700 * the skip field is used by pax for actual data it has 701 * to read (or skip over). 702 */ 703 arcn->type = PAX_REG; 704 arcn->skip = arcn->sb.st_size; 705 break; 706 case S_IFLNK: 707 arcn->type = PAX_SLK; 708 if (curlink != NULL) { 709 cnt = strlcpy(arcn->ln_name, curlink, 710 sizeof(arcn->ln_name)); 711 /* 712 * have to read the symlink path from the file 713 */ 714 } else if ((cnt = 715 readlink(ftent->fts_path, arcn->ln_name, 716 sizeof(arcn->ln_name) - 1)) < 0) { 717 syswarn(1, errno, "Unable to read symlink %s", 718 ftent->fts_path); 719 continue; 720 } 721 /* 722 * set link name length, watch out readlink does not 723 * always null terminate the link path 724 */ 725 arcn->ln_name[cnt] = '\0'; 726 arcn->ln_nlen = cnt; 727 break; 728 #ifdef S_IFSOCK 729 case S_IFSOCK: 730 /* 731 * under BSD storing a socket is senseless but we will 732 * let the format specific write function make the 733 * decision of what to do with it. 734 */ 735 arcn->type = PAX_SCK; 736 break; 737 #endif 738 case S_IFIFO: 739 arcn->type = PAX_FIF; 740 break; 741 } 742 break; 743 } 744 745 /* 746 * copy file name, set file name length 747 */ 748 arcn->nlen = strlcpy(arcn->name, ftent->fts_path, sizeof(arcn->name)); 749 arcn->org_name = arcn->fts_name; 750 strlcpy(arcn->fts_name, ftent->fts_path, sizeof arcn->fts_name); 751 if (strcmp(NM_CPIO, argv0) == 0) { 752 /* 753 * cpio does *not* descend directories listed in the 754 * arguments, unlike pax/tar, so needs special handling 755 * here. failure to do so results in massive amounts 756 * of duplicated files in the output. We kill fts after 757 * the first name is extracted, what a waste. 758 */ 759 ftcur->refcnt = 1; 760 (void)ftree_arg(); 761 } 762 return 0; 763 } 764