1 /* $NetBSD: ftree.c,v 1.15 2001/10/26 16:03:24 lukem 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 #ifndef lint 78 #if 0 79 static char sccsid[] = "@(#)ftree.c 8.2 (Berkeley) 4/18/94"; 80 #else 81 __RCSID("$NetBSD: ftree.c,v 1.15 2001/10/26 16:03:24 lukem 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 <unistd.h> 90 #include <string.h> 91 #include <stdio.h> 92 #include <ctype.h> 93 #include <errno.h> 94 #include <stdlib.h> 95 #include <fts.h> 96 #include "pax.h" 97 #include "ftree.h" 98 #include "extern.h" 99 #include "mtree.h" 100 101 /* 102 * routines to interface with the fts library function. 103 * 104 * file args supplied to pax are stored on a single linked list (of type FTREE) 105 * and given to fts to be processed one at a time. pax "selects" files from 106 * the expansion of each arg into the corresponding file tree (if the arg is a 107 * directory, otherwise the node itself is just passed to pax). The selection 108 * is modified by the -n and -u flags. The user is informed when a specific 109 * file arg does not generate any selected files. -n keeps expanding the file 110 * tree arg until one of its files is selected, then skips to the next file 111 * arg. when the user does not supply the file trees as command line args to 112 * pax, they are read from stdin 113 */ 114 115 static FTS *ftsp = NULL; /* current FTS handle */ 116 static int ftsopts; /* options to be used on fts_open */ 117 static char *farray[2]; /* array for passing each arg to fts */ 118 static FTREE *fthead = NULL; /* head of linked list of file args */ 119 static FTREE *fttail = NULL; /* tail of linked list of file args */ 120 static FTREE *ftcur = NULL; /* current file arg being processed */ 121 static FTSENT *ftent = NULL; /* current file tree entry */ 122 static int ftree_skip; /* when set skip to next file arg */ 123 static NODE *ftnode = NULL; /* mtree(8) specfile; used by -M */ 124 125 static int ftree_arg(void); 126 127 #ifdef NET2_FTS 128 #define FTS_ERRNO(x) errno 129 #else 130 #define FTS_ERRNO(x) (x)->fts_errno 131 #endif 132 133 /* 134 * ftree_start() 135 * initialize the options passed to fts_open() during this run of pax 136 * options are based on the selection of pax options by the user 137 * fts_start() also calls fts_arg() to open the first valid file arg. We 138 * also attempt to reset directory access times when -t (tflag) is set. 139 * Return: 140 * 0 if there is at least one valid file arg to process, -1 otherwise 141 */ 142 143 int 144 ftree_start(void) 145 { 146 147 /* 148 * if -M is given, the list of filenames on stdin is actually 149 * an mtree(8) specfile, so parse the specfile into a NODE * 150 * tree at ftnode, for use by next_file() 151 */ 152 if (Mflag) { 153 if (fthead != NULL) { 154 tty_warn(1, 155 "The -M flag is only supported when reading file list from stdin"); 156 return(-1); 157 } 158 ftnode = spec(stdin); 159 if (ftnode != NULL && 160 (ftnode->type != F_DIR || strcmp(ftnode->name, ".") != 0)) { 161 tty_warn(1, 162 "First node of specfile is not `.' directory"); 163 return(-1); 164 } 165 return(0); 166 } 167 168 /* 169 * set up the operation mode of fts, open the first file arg. We must 170 * use FTS_NOCHDIR, as the user may have to open multiple archives and 171 * if fts did a chdir off into the boondocks, we may create an archive 172 * volume in an place where the user did not expect to. 173 */ 174 ftsopts = FTS_NOCHDIR; 175 176 /* 177 * optional user flags that effect file traversal 178 * -H command line symlink follow only (half follow) 179 * -L follow sylinks (logical) 180 * -P do not follow sylinks (physical). This is the default. 181 * -X do not cross over mount points 182 * -t preserve access times on files read. 183 * -n select only the first member of a file tree when a match is found 184 * -d do not extract subtrees rooted at a directory arg. 185 */ 186 if (Lflag) 187 ftsopts |= FTS_LOGICAL; 188 else 189 ftsopts |= FTS_PHYSICAL; 190 if (Hflag) 191 #ifdef NET2_FTS 192 tty_warn(0, "The -H flag is not supported on this version"); 193 #else 194 ftsopts |= FTS_COMFOLLOW; 195 #endif 196 if (Xflag) 197 ftsopts |= FTS_XDEV; 198 199 if ((fthead == NULL) && ((farray[0] = malloc(PAXPATHLEN+2)) == NULL)) { 200 tty_warn(1, "Unable to allocate memory for file name buffer"); 201 return(-1); 202 } 203 204 if (ftree_arg() < 0) 205 return(-1); 206 if (tflag && (atdir_start() < 0)) 207 return(-1); 208 return(0); 209 } 210 211 /* 212 * ftree_add() 213 * add the arg to the linked list of files to process. Each will be 214 * processed by fts one at a time 215 * Return: 216 * 0 if added to the linked list, -1 if failed 217 */ 218 219 int 220 ftree_add(char *str, int isdir) 221 { 222 FTREE *ft; 223 int len; 224 225 /* 226 * simple check for bad args 227 */ 228 if ((str == NULL) || (*str == '\0')) { 229 tty_warn(0, "Invalid file name arguement"); 230 return(-1); 231 } 232 233 /* 234 * allocate FTREE node and add to the end of the linked list (args are 235 * processed in the same order they were passed to pax). Get rid of any 236 * trailing / the user may pass us. (watch out for / by itself). 237 */ 238 if ((ft = (FTREE *)malloc(sizeof(FTREE))) == NULL) { 239 tty_warn(0, "Unable to allocate memory for filename"); 240 return(-1); 241 } 242 243 if (((len = strlen(str) - 1) > 0) && (str[len] == '/')) 244 str[len] = '\0'; 245 ft->fname = str; 246 ft->refcnt = -isdir; 247 ft->fow = NULL; 248 if (fthead == NULL) { 249 fttail = fthead = ft; 250 return(0); 251 } 252 fttail->fow = ft; 253 fttail = ft; 254 return(0); 255 } 256 257 /* 258 * ftree_sel() 259 * this entry has been selected by pax. bump up reference count and handle 260 * -n and -d processing. 261 */ 262 263 void 264 ftree_sel(ARCHD *arcn) 265 { 266 /* 267 * set reference bit for this pattern. This linked list is only used 268 * when file trees are supplied pax as args. The list is not used when 269 * the trees are read from stdin. 270 */ 271 if (ftcur != NULL) 272 ftcur->refcnt = 1; 273 274 /* 275 * if -n we are done with this arg, force a skip to the next arg when 276 * pax asks for the next file in next_file(). 277 * if -M we don't use fts(3), so the rest of this function is moot. 278 * if -d we tell fts only to match the directory (if the arg is a dir) 279 * and not the entire file tree rooted at that point. 280 */ 281 if (nflag) 282 ftree_skip = 1; 283 284 if (Mflag || !dflag || (arcn->type != PAX_DIR)) 285 return; 286 287 if (ftent != NULL) 288 (void)fts_set(ftsp, ftent, FTS_SKIP); 289 } 290 291 /* 292 * ftree_chk() 293 * called at end on pax execution. Prints all those file args that did not 294 * have a selected member (reference count still 0) 295 */ 296 297 void 298 ftree_chk(void) 299 { 300 FTREE *ft; 301 int wban = 0; 302 303 /* 304 * make sure all dir access times were reset. 305 */ 306 if (tflag) 307 atdir_end(); 308 309 /* 310 * walk down list and check reference count. Print out those members 311 * that never had a match 312 */ 313 for (ft = fthead; ft != NULL; ft = ft->fow) { 314 if (ft->refcnt != 0) 315 continue; 316 if (wban == 0) { 317 tty_warn(1, 318 "WARNING! These file names were not selected:"); 319 ++wban; 320 } 321 (void)fprintf(stderr, "%s\n", ft->fname); 322 } 323 } 324 325 /* 326 * ftree_arg() 327 * Get the next file arg for fts to process. Can be from either the linked 328 * list or read from stdin when the user did not them as args to pax. Each 329 * arg is processed until the first successful fts_open(). 330 * Return: 331 * 0 when the next arg is ready to go, -1 if out of file args (or EOF on 332 * stdin). 333 */ 334 335 static int 336 ftree_arg(void) 337 { 338 char *pt; 339 340 /* 341 * close off the current file tree 342 */ 343 if (ftsp != NULL) { 344 (void)fts_close(ftsp); 345 ftsp = NULL; 346 } 347 348 /* 349 * keep looping until we get a valid file tree to process. Stop when we 350 * reach the end of the list (or get an eof on stdin) 351 */ 352 for(;;) { 353 if (fthead == NULL) { 354 /* 355 * the user didn't supply any args, get the file trees 356 * to process from stdin; 357 */ 358 if (fgets(farray[0], PAXPATHLEN+1, stdin) == NULL) 359 return(-1); 360 if ((pt = strchr(farray[0], '\n')) != NULL) 361 *pt = '\0'; 362 } else { 363 /* 364 * the user supplied the file args as arguements to pax 365 */ 366 if (ftcur == NULL) 367 ftcur = fthead; 368 else if ((ftcur = ftcur->fow) == NULL) 369 return(-1); 370 371 if (ftcur->refcnt < 0) { 372 /* 373 * chdir entry. 374 * Change directory and retry loop. 375 */ 376 if (ar_dochdir(ftcur->fname)) 377 return (-1); 378 continue; 379 } 380 farray[0] = ftcur->fname; 381 } 382 383 /* 384 * watch it, fts wants the file arg stored in a array of char 385 * ptrs, with the last one a null. we use a two element array 386 * and set farray[0] to point at the buffer with the file name 387 * in it. We cannot pass all the file args to fts at one shot 388 * as we need to keep a handle on which file arg generates what 389 * files (the -n and -d flags need this). If the open is 390 * successful, return a 0. 391 */ 392 if ((ftsp = fts_open(farray, ftsopts, NULL)) != NULL) 393 break; 394 } 395 return(0); 396 } 397 398 /* 399 * next_file() 400 * supplies the next file to process in the supplied archd structure. 401 * Return: 402 * 0 when contents of arcn have been set with the next file, -1 when done. 403 */ 404 405 int 406 next_file(ARCHD *arcn) 407 { 408 static char curdir[PAXPATHLEN+2], curpath[PAXPATHLEN+2]; 409 static int curdirlen; 410 411 struct stat statbuf; 412 FTSENT Mftent; 413 int cnt; 414 time_t atime, mtime; 415 char *curlink; 416 #define MFTENT_DUMMY_DEV UINT_MAX 417 418 curlink = NULL; 419 /* 420 * if parsing an mtree(8) specfile, build up `dummy' ftsent 421 * from specfile info, and jump below to complete setup of arcn. 422 */ 423 if (Mflag) { 424 if (ftnode == NULL) /* tree is empty */ 425 return (-1); 426 427 /* get current name */ 428 if (snprintf(curpath, sizeof(curpath), "%s%s%s", 429 curdir, curdirlen ? "/" : "", ftnode->name) 430 >= sizeof(curpath)) { 431 tty_warn(1, "line %lu: %s: %s", (u_long)ftnode->lineno, 432 curdir, strerror(ENAMETOOLONG)); 433 return (-1); 434 } 435 ftnode->flags |= F_VISIT; /* mark node visited */ 436 437 /* construct dummy FTSENT */ 438 Mftent.fts_path = curpath; 439 Mftent.fts_statp = &statbuf; 440 Mftent.fts_pointer = ftnode; 441 ftent = &Mftent; 442 /* stat existing file */ 443 if (lstat(Mftent.fts_path, &statbuf) == -1) { 444 /* fake up stat buffer */ 445 memset(&statbuf, 0, sizeof(statbuf)); 446 statbuf.st_dev = MFTENT_DUMMY_DEV; 447 statbuf.st_ino = ftnode->lineno; 448 statbuf.st_size = 0; 449 #define NODETEST(t, m) \ 450 if (!(t)) { \ 451 tty_warn(1, "line %lu: %s: %s not specified", \ 452 (u_long)ftnode->lineno, \ 453 ftent->fts_path, m); \ 454 return(-1); \ 455 } 456 statbuf.st_mode = nodetoino(ftnode->type); 457 NODETEST(ftnode->flags & F_TYPE, "type"); 458 NODETEST(ftnode->flags & F_MODE, "mode"); 459 if (!(ftnode->flags & F_TIME)) 460 statbuf.st_mtime = starttime; 461 NODETEST(ftnode->flags & (F_GID | F_GNAME), "group"); 462 NODETEST(ftnode->flags & (F_UID | F_UNAME), "user"); 463 if (ftnode->type == F_BLOCK || ftnode->type == F_CHAR) 464 NODETEST(ftnode->flags & F_DEV, 465 "device number"); 466 if (ftnode->type == F_LINK) 467 NODETEST(ftnode->flags & F_SLINK, "symlink"); 468 /* don't require F_FLAGS or F_SIZE */ 469 #undef NODETEST 470 } else if (ftnode->flags & F_TYPE && 471 nodetoino(ftnode->type) != (statbuf.st_mode & S_IFMT)) { 472 tty_warn(1, 473 "line %lu: %s: type mismatch: specfile %s, tree %s", 474 (u_long)ftnode->lineno, ftent->fts_path, 475 inotype(nodetoino(ftnode->type)), 476 inotype(statbuf.st_mode)); 477 return(-1); 478 } 479 /* 480 * override settings with those from specfile 481 */ 482 if (ftnode->flags & F_MODE) { 483 statbuf.st_mode &= ~ALLPERMS; 484 statbuf.st_mode |= (ftnode->st_mode & ALLPERMS); 485 } 486 if (ftnode->flags & (F_GID | F_GNAME)) 487 statbuf.st_gid = ftnode->st_gid; 488 if (ftnode->flags & (F_UID | F_UNAME)) 489 statbuf.st_uid = ftnode->st_uid; 490 if (ftnode->flags & F_FLAGS) 491 statbuf.st_flags = ftnode->st_flags; 492 if (ftnode->flags & F_TIME) 493 statbuf.st_mtimespec = ftnode->st_mtimespec; 494 if (ftnode->flags & F_DEV) 495 statbuf.st_rdev = ftnode->st_rdev; 496 if (ftnode->flags & F_SLINK) 497 curlink = ftnode->slink; 498 /* ignore F_SIZE */ 499 500 /* 501 * find next node 502 */ 503 if (ftnode->type == F_DIR && ftnode->child != NULL) { 504 /* directory with unseen child */ 505 ftnode = ftnode->child; 506 curdirlen = l_strncpy(curdir, curpath, sizeof(curdir)); 507 } else do { 508 if (ftnode->next != NULL) { 509 /* next node at current level */ 510 ftnode = ftnode->next; 511 } else { /* move back to parent */ 512 /* reset time only on first cd.. */ 513 if (Mftent.fts_pointer == ftnode && tflag && 514 (get_atdir(MFTENT_DUMMY_DEV, ftnode->lineno, 515 &mtime, &atime) == 0)) { 516 set_ftime(ftent->fts_path, 517 mtime, atime, 1); 518 } 519 if (ftnode->parent == ftnode) 520 ftnode = NULL; 521 else 522 ftnode = ftnode->parent; 523 if (ftnode != NULL) { 524 curdirlen -= strlen(ftnode->name) + 1; 525 curdir[curdirlen] = '\0'; 526 } 527 } 528 } while (ftnode != NULL && ftnode->flags & F_VISIT); 529 goto got_ftent; 530 } 531 532 /* 533 * ftree_sel() might have set the ftree_skip flag if the user has the 534 * -n option and a file was selected from this file arg tree. (-n says 535 * only one member is matched for each pattern) ftree_skip being 1 536 * forces us to go to the next arg now. 537 */ 538 if (ftree_skip) { 539 /* 540 * clear and go to next arg 541 */ 542 ftree_skip = 0; 543 if (ftree_arg() < 0) 544 return(-1); 545 } 546 547 /* 548 * loop until we get a valid file to process 549 */ 550 for(;;) { 551 if ((ftent = fts_read(ftsp)) == NULL) { 552 /* 553 * out of files in this tree, go to next arg, if none 554 * we are done 555 */ 556 if (ftree_arg() < 0) 557 return(-1); 558 continue; 559 } 560 561 /* 562 * handle each type of fts_read() flag 563 */ 564 switch(ftent->fts_info) { 565 case FTS_D: 566 /* 567 * cpio does *not* decend directories listed in the 568 * arguments, unlike pax/tar, so needs special handling 569 * here. failure to do so results in massive amounts 570 * of duplicated files in the output. 571 */ 572 if (cpio_mode) 573 continue; 574 /* FALLTHROUGH */ 575 case FTS_DEFAULT: 576 case FTS_F: 577 case FTS_SL: 578 case FTS_SLNONE: 579 /* 580 * these are all ok 581 */ 582 break; 583 case FTS_DP: 584 /* 585 * already saw this directory. If the user wants file 586 * access times reset, we use this to restore the 587 * access time for this directory since this is the 588 * last time we will see it in this file subtree 589 * remember to force the time (this is -t on a read 590 * directory, not a created directory). 591 */ 592 if (!tflag || (get_atdir( 593 #ifdef NET2_FTS 594 ftent->fts_statb.st_dev, ftent->fts_statb.st_ino, 595 #else 596 ftent->fts_statp->st_dev, ftent->fts_statp->st_ino, 597 #endif 598 &mtime, &atime) < 0)) 599 continue; 600 set_ftime(ftent->fts_path, mtime, atime, 1); 601 continue; 602 case FTS_DC: 603 /* 604 * fts claims a file system cycle 605 */ 606 tty_warn(1,"File system cycle found at %s", 607 ftent->fts_path); 608 continue; 609 case FTS_DNR: 610 syswarn(1, FTS_ERRNO(ftent), 611 "Unable to read directory %s", ftent->fts_path); 612 continue; 613 case FTS_ERR: 614 syswarn(1, FTS_ERRNO(ftent), 615 "File system traversal error"); 616 continue; 617 case FTS_NS: 618 case FTS_NSOK: 619 syswarn(1, FTS_ERRNO(ftent), 620 "Unable to access %s", ftent->fts_path); 621 continue; 622 } 623 624 got_ftent: 625 /* 626 * ok got a file tree node to process. copy info into arcn 627 * structure (initialize as required) 628 */ 629 arcn->skip = 0; 630 arcn->pad = 0; 631 arcn->ln_nlen = 0; 632 arcn->ln_name[0] = '\0'; 633 #ifdef NET2_FTS 634 arcn->sb = ftent->fts_statb; 635 #else 636 arcn->sb = *(ftent->fts_statp); 637 #endif 638 639 /* 640 * file type based set up and copy into the arcn struct 641 * SIDE NOTE: 642 * we try to reset the access time on all files and directories 643 * we may read when the -t flag is specified. files are reset 644 * when we close them after copying. we reset the directories 645 * when we are done with their file tree (we also clean up at 646 * end in case we cut short a file tree traversal). However 647 * there is no way to reset access times on symlinks. 648 */ 649 switch(S_IFMT & arcn->sb.st_mode) { 650 case S_IFDIR: 651 arcn->type = PAX_DIR; 652 if (!tflag) 653 break; 654 add_atdir(ftent->fts_path, arcn->sb.st_dev, 655 arcn->sb.st_ino, arcn->sb.st_mtime, 656 arcn->sb.st_atime); 657 break; 658 case S_IFCHR: 659 arcn->type = PAX_CHR; 660 break; 661 case S_IFBLK: 662 arcn->type = PAX_BLK; 663 break; 664 case S_IFREG: 665 /* 666 * only regular files with have data to store on the 667 * archive. all others will store a zero length skip. 668 * the skip field is used by pax for actual data it has 669 * to read (or skip over). 670 */ 671 arcn->type = PAX_REG; 672 arcn->skip = arcn->sb.st_size; 673 break; 674 case S_IFLNK: 675 arcn->type = PAX_SLK; 676 if (curlink != NULL) { 677 cnt = l_strncpy(arcn->ln_name, curlink, 678 sizeof(arcn->ln_name)); 679 /* 680 * have to read the symlink path from the file 681 */ 682 } else if ((cnt = 683 readlink(ftent->fts_path, arcn->ln_name, 684 PAXPATHLEN)) < 0) { 685 syswarn(1, errno, "Unable to read symlink %s", 686 ftent->fts_path); 687 continue; 688 } 689 /* 690 * set link name length, watch out readlink does not 691 * allways null terminate the link path 692 */ 693 arcn->ln_name[cnt] = '\0'; 694 arcn->ln_nlen = cnt; 695 break; 696 case S_IFSOCK: 697 /* 698 * under BSD storing a socket is senseless but we will 699 * let the format specific write function make the 700 * decision of what to do with it. 701 */ 702 arcn->type = PAX_SCK; 703 break; 704 case S_IFIFO: 705 arcn->type = PAX_FIF; 706 break; 707 } 708 break; 709 } 710 711 /* 712 * copy file name, set file name length 713 */ 714 arcn->nlen = l_strncpy(arcn->name, ftent->fts_path, PAXPATHLEN+1); 715 arcn->name[arcn->nlen] = '\0'; 716 arcn->org_name = ftent->fts_path; 717 return(0); 718 } 719