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