1 /* $NetBSD: ftree.c,v 1.26 2003/06/23 13:14:43 christos 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. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the University of 22 * California, Berkeley and its contributors. 23 * 4. Neither the name of the University nor the names of its contributors 24 * may be used to endorse or promote products derived from this software 25 * without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 37 * SUCH DAMAGE. 38 */ 39 40 /*- 41 * Copyright (c) 2001 The NetBSD Foundation, Inc. 42 * All rights reserved. 43 * 44 * This code is derived from software contributed to The NetBSD Foundation 45 * by Luke Mewburn of Wasabi Systems. 46 * 47 * Redistribution and use in source and binary forms, with or without 48 * modification, are permitted provided that the following conditions 49 * are met: 50 * 1. Redistributions of source code must retain the above copyright 51 * notice, this list of conditions and the following disclaimer. 52 * 2. Redistributions in binary form must reproduce the above copyright 53 * notice, this list of conditions and the following disclaimer in the 54 * documentation and/or other materials provided with the distribution. 55 * 3. All advertising materials mentioning features or use of this software 56 * must display the following acknowledgement: 57 * This product includes software developed by the NetBSD 58 * Foundation, Inc. and its contributors. 59 * 4. Neither the name of The NetBSD Foundation nor the names of its 60 * contributors may be used to endorse or promote products derived 61 * from this software without specific prior written permission. 62 * 63 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 64 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 65 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 66 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 67 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 68 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 69 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 70 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 71 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 72 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 73 * POSSIBILITY OF SUCH DAMAGE. 74 */ 75 76 #include <sys/cdefs.h> 77 #if defined(__RCSID) && !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 1.26 2003/06/23 13:14:43 christos 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(void) 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 char *pt; 346 347 /* 348 * close off the current file tree 349 */ 350 if (ftsp != NULL) { 351 (void)fts_close(ftsp); 352 ftsp = NULL; 353 } 354 355 /* 356 * keep looping until we get a valid file tree to process. Stop when we 357 * reach the end of the list (or get an eof on stdin) 358 */ 359 for(;;) { 360 if (fthead == NULL) { 361 /* 362 * the user didn't supply any args, get the file trees 363 * to process from stdin; 364 */ 365 if (fgets(farray[0], PAXPATHLEN+1, stdin) == NULL) 366 return(-1); 367 if ((pt = strchr(farray[0], '\n')) != NULL) 368 *pt = '\0'; 369 } else { 370 /* 371 * the user supplied the file args as arguements to pax 372 */ 373 if (ftcur == NULL) 374 ftcur = fthead; 375 else if ((ftcur = ftcur->fow) == NULL) 376 return(-1); 377 378 if (ftcur->refcnt < 0) { 379 /* 380 * chdir entry. 381 * Change directory and retry loop. 382 */ 383 if (ar_dochdir(ftcur->fname)) 384 return (-1); 385 continue; 386 } 387 farray[0] = ftcur->fname; 388 } 389 390 /* 391 * watch it, fts wants the file arg stored in a array of char 392 * ptrs, with the last one a null. we use a two element array 393 * and set farray[0] to point at the buffer with the file name 394 * in it. We cannot pass all the file args to fts at one shot 395 * as we need to keep a handle on which file arg generates what 396 * files (the -n and -d flags need this). If the open is 397 * successful, return a 0. 398 */ 399 if ((ftsp = fts_open(farray, ftsopts, NULL)) != NULL) 400 break; 401 } 402 return(0); 403 } 404 405 /* 406 * next_file() 407 * supplies the next file to process in the supplied archd structure. 408 * Return: 409 * 0 when contents of arcn have been set with the next file, -1 when done. 410 */ 411 412 int 413 next_file(ARCHD *arcn) 414 { 415 #ifndef SMALL 416 static char curdir[PAXPATHLEN+2], curpath[PAXPATHLEN+2]; 417 static int curdirlen; 418 419 struct stat statbuf; 420 FTSENT Mftent; 421 #endif /* SMALL */ 422 int cnt; 423 time_t atime, mtime; 424 char *curlink; 425 #define MFTENT_DUMMY_DEV UINT_MAX 426 427 curlink = NULL; 428 #ifndef SMALL 429 /* 430 * if parsing an mtree(8) specfile, build up `dummy' ftsent 431 * from specfile info, and jump below to complete setup of arcn. 432 */ 433 if (Mflag) { 434 int skipoptional; 435 436 next_ftnode: 437 skipoptional = 0; 438 if (ftnode == NULL) /* tree is empty */ 439 return (-1); 440 441 /* get current name */ 442 if (snprintf(curpath, sizeof(curpath), "%s%s%s", 443 curdir, curdirlen ? "/" : "", ftnode->name) 444 >= sizeof(curpath)) { 445 tty_warn(1, "line %lu: %s: %s", (u_long)ftnode->lineno, 446 curdir, strerror(ENAMETOOLONG)); 447 return (-1); 448 } 449 ftnode->flags |= F_VISIT; /* mark node visited */ 450 451 /* construct dummy FTSENT */ 452 Mftent.fts_path = curpath; 453 Mftent.fts_statp = &statbuf; 454 Mftent.fts_pointer = ftnode; 455 ftent = &Mftent; 456 /* look for existing file */ 457 if (lstat(Mftent.fts_path, &statbuf) == -1) { 458 if (ftnode->flags & F_OPT) 459 skipoptional = 1; 460 461 /* missing: fake up stat info */ 462 memset(&statbuf, 0, sizeof(statbuf)); 463 statbuf.st_dev = MFTENT_DUMMY_DEV; 464 statbuf.st_ino = ftnode->lineno; 465 statbuf.st_size = 0; 466 #define NODETEST(t, m) \ 467 if (!(t)) { \ 468 tty_warn(1, "line %lu: %s: %s not specified", \ 469 (u_long)ftnode->lineno, \ 470 ftent->fts_path, m); \ 471 return(-1); \ 472 } 473 statbuf.st_mode = nodetoino(ftnode->type); 474 NODETEST(ftnode->flags & F_TYPE, "type"); 475 NODETEST(ftnode->flags & F_MODE, "mode"); 476 if (!(ftnode->flags & F_TIME)) 477 statbuf.st_mtime = starttime; 478 NODETEST(ftnode->flags & (F_GID | F_GNAME), "group"); 479 NODETEST(ftnode->flags & (F_UID | F_UNAME), "user"); 480 if (ftnode->type == F_BLOCK || ftnode->type == F_CHAR) 481 NODETEST(ftnode->flags & F_DEV, 482 "device number"); 483 if (ftnode->type == F_LINK) 484 NODETEST(ftnode->flags & F_SLINK, "symlink"); 485 /* don't require F_FLAGS or F_SIZE */ 486 #undef NODETEST 487 } else { 488 if (ftnode->flags & F_TYPE && nodetoino(ftnode->type) 489 != (statbuf.st_mode & S_IFMT)) { 490 tty_warn(1, 491 "line %lu: %s: type mismatch: specfile %s, tree %s", 492 (u_long)ftnode->lineno, ftent->fts_path, 493 inotype(nodetoino(ftnode->type)), 494 inotype(statbuf.st_mode)); 495 return(-1); 496 } 497 if (ftnode->type == F_DIR && (ftnode->flags & F_OPT)) 498 skipoptional = 1; 499 } 500 /* 501 * override settings with those from specfile 502 */ 503 if (ftnode->flags & F_MODE) { 504 statbuf.st_mode &= ~ALLPERMS; 505 statbuf.st_mode |= (ftnode->st_mode & ALLPERMS); 506 } 507 if (ftnode->flags & (F_GID | F_GNAME)) 508 statbuf.st_gid = ftnode->st_gid; 509 if (ftnode->flags & (F_UID | F_UNAME)) 510 statbuf.st_uid = ftnode->st_uid; 511 #if HAVE_STRUCT_STAT_ST_FLAGS 512 if (ftnode->flags & F_FLAGS) 513 statbuf.st_flags = ftnode->st_flags; 514 #endif 515 if (ftnode->flags & F_TIME) 516 #ifdef BSD4_4 517 statbuf.st_mtimespec = ftnode->st_mtimespec; 518 #else 519 statbuf.st_mtime = ftnode->st_mtimespec.tv_sec; 520 #endif 521 if (ftnode->flags & F_DEV) 522 statbuf.st_rdev = ftnode->st_rdev; 523 if (ftnode->flags & F_SLINK) 524 curlink = ftnode->slink; 525 /* ignore F_SIZE */ 526 527 /* 528 * find next node 529 */ 530 if (ftnode->type == F_DIR && ftnode->child != NULL) { 531 /* directory with unseen child */ 532 ftnode = ftnode->child; 533 curdirlen = strlcpy(curdir, curpath, sizeof(curdir)); 534 } else do { 535 if (ftnode->next != NULL) { 536 /* next node at current level */ 537 ftnode = ftnode->next; 538 } else { /* move back to parent */ 539 /* reset time only on first cd.. */ 540 if (Mftent.fts_pointer == ftnode && tflag && 541 (get_atdir(MFTENT_DUMMY_DEV, ftnode->lineno, 542 &mtime, &atime) == 0)) { 543 set_ftime(ftent->fts_path, 544 mtime, atime, 1); 545 } 546 ftnode = ftnode->parent; 547 if (ftnode->parent == ftnode) 548 ftnode = NULL; 549 else { 550 curdirlen -= strlen(ftnode->name) + 1; 551 curdir[curdirlen] = '\0'; 552 } 553 } 554 } while (ftnode != NULL && ftnode->flags & F_VISIT); 555 if (skipoptional) /* skip optional entries */ 556 goto next_ftnode; 557 goto got_ftent; 558 } 559 #endif /* SMALL */ 560 561 /* 562 * ftree_sel() might have set the ftree_skip flag if the user has the 563 * -n option and a file was selected from this file arg tree. (-n says 564 * only one member is matched for each pattern) ftree_skip being 1 565 * forces us to go to the next arg now. 566 */ 567 if (ftree_skip) { 568 /* 569 * clear and go to next arg 570 */ 571 ftree_skip = 0; 572 if (ftree_arg() < 0) 573 return(-1); 574 } 575 576 if (ftsp == NULL) 577 return -1; 578 /* 579 * loop until we get a valid file to process 580 */ 581 for(;;) { 582 if ((ftent = fts_read(ftsp)) == NULL) { 583 /* 584 * out of files in this tree, go to next arg, if none 585 * we are done 586 */ 587 if (ftree_arg() < 0) 588 return(-1); 589 continue; 590 } 591 592 /* 593 * handle each type of fts_read() flag 594 */ 595 switch(ftent->fts_info) { 596 case FTS_D: 597 case FTS_DEFAULT: 598 case FTS_F: 599 case FTS_SL: 600 case FTS_SLNONE: 601 /* 602 * these are all ok 603 */ 604 break; 605 case FTS_DP: 606 /* 607 * already saw this directory. If the user wants file 608 * access times reset, we use this to restore the 609 * access time for this directory since this is the 610 * last time we will see it in this file subtree 611 * remember to force the time (this is -t on a read 612 * directory, not a created directory). 613 */ 614 if (!tflag || (get_atdir( 615 #ifdef NET2_FTS 616 ftent->fts_statb.st_dev, ftent->fts_statb.st_ino, 617 #else 618 ftent->fts_statp->st_dev, ftent->fts_statp->st_ino, 619 #endif 620 &mtime, &atime) < 0)) 621 continue; 622 set_ftime(ftent->fts_path, mtime, atime, 1); 623 continue; 624 case FTS_DC: 625 /* 626 * fts claims a file system cycle 627 */ 628 tty_warn(1,"File system cycle found at %s", 629 ftent->fts_path); 630 continue; 631 case FTS_DNR: 632 syswarn(1, FTS_ERRNO(ftent), 633 "Unable to read directory %s", ftent->fts_path); 634 continue; 635 case FTS_ERR: 636 syswarn(1, FTS_ERRNO(ftent), 637 "File system traversal error"); 638 continue; 639 case FTS_NS: 640 case FTS_NSOK: 641 syswarn(1, FTS_ERRNO(ftent), 642 "Unable to access %s", ftent->fts_path); 643 continue; 644 } 645 646 #ifndef SMALL 647 got_ftent: 648 #endif /* SMALL */ 649 /* 650 * ok got a file tree node to process. copy info into arcn 651 * structure (initialize as required) 652 */ 653 arcn->skip = 0; 654 arcn->pad = 0; 655 arcn->ln_nlen = 0; 656 arcn->ln_name[0] = '\0'; 657 #ifdef NET2_FTS 658 arcn->sb = ftent->fts_statb; 659 #else 660 arcn->sb = *(ftent->fts_statp); 661 #endif 662 663 /* 664 * file type based set up and copy into the arcn struct 665 * SIDE NOTE: 666 * we try to reset the access time on all files and directories 667 * we may read when the -t flag is specified. files are reset 668 * when we close them after copying. we reset the directories 669 * when we are done with their file tree (we also clean up at 670 * end in case we cut short a file tree traversal). However 671 * there is no way to reset access times on symlinks. 672 */ 673 switch(S_IFMT & arcn->sb.st_mode) { 674 case S_IFDIR: 675 arcn->type = PAX_DIR; 676 if (!tflag) 677 break; 678 add_atdir(ftent->fts_path, arcn->sb.st_dev, 679 arcn->sb.st_ino, arcn->sb.st_mtime, 680 arcn->sb.st_atime); 681 break; 682 case S_IFCHR: 683 arcn->type = PAX_CHR; 684 break; 685 case S_IFBLK: 686 arcn->type = PAX_BLK; 687 break; 688 case S_IFREG: 689 /* 690 * only regular files with have data to store on the 691 * archive. all others will store a zero length skip. 692 * the skip field is used by pax for actual data it has 693 * to read (or skip over). 694 */ 695 arcn->type = PAX_REG; 696 arcn->skip = arcn->sb.st_size; 697 break; 698 case S_IFLNK: 699 arcn->type = PAX_SLK; 700 if (curlink != NULL) { 701 cnt = strlcpy(arcn->ln_name, curlink, 702 sizeof(arcn->ln_name)); 703 /* 704 * have to read the symlink path from the file 705 */ 706 } else if ((cnt = 707 readlink(ftent->fts_path, arcn->ln_name, 708 sizeof(arcn->ln_name) - 1)) < 0) { 709 syswarn(1, errno, "Unable to read symlink %s", 710 ftent->fts_path); 711 continue; 712 } 713 /* 714 * set link name length, watch out readlink does not 715 * allways null terminate the link path 716 */ 717 arcn->ln_name[cnt] = '\0'; 718 arcn->ln_nlen = cnt; 719 break; 720 case S_IFSOCK: 721 /* 722 * under BSD storing a socket is senseless but we will 723 * let the format specific write function make the 724 * decision of what to do with it. 725 */ 726 arcn->type = PAX_SCK; 727 break; 728 case S_IFIFO: 729 arcn->type = PAX_FIF; 730 break; 731 } 732 break; 733 } 734 735 /* 736 * copy file name, set file name length 737 */ 738 arcn->nlen = strlcpy(arcn->name, ftent->fts_path, sizeof(arcn->name)); 739 arcn->org_name = ftent->fts_path; 740 if (strcmp(NM_CPIO, argv0) == 0) { 741 /* 742 * cpio does *not* descend directories listed in the 743 * arguments, unlike pax/tar, so needs special handling 744 * here. failure to do so results in massive amounts 745 * of duplicated files in the output. We kill fts after 746 * the first name is extracted, what a waste. 747 */ 748 ftcur->refcnt = 1; 749 (void)ftree_arg(); 750 } 751 return(0); 752 } 753