ftree.c revision 1.19 1 /* $NetBSD: ftree.c,v 1.19 2002/04/12 04:44:08 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 #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 1.19 2002/04/12 04:44:08 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 <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 #ifndef SMALL
100 #include "mtree.h"
101 #endif /* SMALL */
102
103 /*
104 * routines to interface with the fts library function.
105 *
106 * file args supplied to pax are stored on a single linked list (of type FTREE)
107 * and given to fts to be processed one at a time. pax "selects" files from
108 * the expansion of each arg into the corresponding file tree (if the arg is a
109 * directory, otherwise the node itself is just passed to pax). The selection
110 * is modified by the -n and -u flags. The user is informed when a specific
111 * file arg does not generate any selected files. -n keeps expanding the file
112 * tree arg until one of its files is selected, then skips to the next file
113 * arg. when the user does not supply the file trees as command line args to
114 * pax, they are read from stdin
115 */
116
117 static FTS *ftsp = NULL; /* current FTS handle */
118 static int ftsopts; /* options to be used on fts_open */
119 static char *farray[2]; /* array for passing each arg to fts */
120 static FTREE *fthead = NULL; /* head of linked list of file args */
121 static FTREE *fttail = NULL; /* tail of linked list of file args */
122 static FTREE *ftcur = NULL; /* current file arg being processed */
123 static FTSENT *ftent = NULL; /* current file tree entry */
124 static int ftree_skip; /* when set skip to next file arg */
125 #ifndef SMALL
126 static NODE *ftnode = NULL; /* mtree(8) specfile; used by -M */
127 #endif /* SMALL */
128
129 static int ftree_arg(void);
130
131 #ifdef NET2_FTS
132 #define FTS_ERRNO(x) errno
133 #else
134 #define FTS_ERRNO(x) (x)->fts_errno
135 #endif
136
137 /*
138 * ftree_start()
139 * initialize the options passed to fts_open() during this run of pax
140 * options are based on the selection of pax options by the user
141 * fts_start() also calls fts_arg() to open the first valid file arg. We
142 * also attempt to reset directory access times when -t (tflag) is set.
143 * Return:
144 * 0 if there is at least one valid file arg to process, -1 otherwise
145 */
146
147 int
148 ftree_start(void)
149 {
150
151 #ifndef SMALL
152 /*
153 * if -M is given, the list of filenames on stdin is actually
154 * an mtree(8) specfile, so parse the specfile into a NODE *
155 * tree at ftnode, for use by next_file()
156 */
157 if (Mflag) {
158 if (fthead != NULL) {
159 tty_warn(1,
160 "The -M flag is only supported when reading file list from stdin");
161 return(-1);
162 }
163 ftnode = spec(stdin);
164 if (ftnode != NULL &&
165 (ftnode->type != F_DIR || strcmp(ftnode->name, ".") != 0)) {
166 tty_warn(1,
167 "First node of specfile is not `.' directory");
168 return(-1);
169 }
170 return(0);
171 }
172 #endif /* SMALL */
173
174 /*
175 * set up the operation mode of fts, open the first file arg. We must
176 * use FTS_NOCHDIR, as the user may have to open multiple archives and
177 * if fts did a chdir off into the boondocks, we may create an archive
178 * volume in an place where the user did not expect to.
179 */
180 ftsopts = FTS_NOCHDIR;
181
182 /*
183 * optional user flags that effect file traversal
184 * -H command line symlink follow only (half follow)
185 * -L follow sylinks (logical)
186 * -P do not follow sylinks (physical). This is the default.
187 * -X do not cross over mount points
188 * -t preserve access times on files read.
189 * -n select only the first member of a file tree when a match is found
190 * -d do not extract subtrees rooted at a directory arg.
191 */
192 if (Lflag)
193 ftsopts |= FTS_LOGICAL;
194 else
195 ftsopts |= FTS_PHYSICAL;
196 if (Hflag)
197 #ifdef NET2_FTS
198 tty_warn(0, "The -H flag is not supported on this version");
199 #else
200 ftsopts |= FTS_COMFOLLOW;
201 #endif
202 if (Xflag)
203 ftsopts |= FTS_XDEV;
204
205 if ((fthead == NULL) && ((farray[0] = malloc(PAXPATHLEN+2)) == NULL)) {
206 tty_warn(1, "Unable to allocate memory for file name buffer");
207 return(-1);
208 }
209
210 if (ftree_arg() < 0)
211 return(-1);
212 if (tflag && (atdir_start() < 0))
213 return(-1);
214 return(0);
215 }
216
217 /*
218 * ftree_add()
219 * add the arg to the linked list of files to process. Each will be
220 * processed by fts one at a time
221 * Return:
222 * 0 if added to the linked list, -1 if failed
223 */
224
225 int
226 ftree_add(char *str, int isdir)
227 {
228 FTREE *ft;
229 int len;
230
231 /*
232 * simple check for bad args
233 */
234 if ((str == NULL) || (*str == '\0')) {
235 tty_warn(0, "Invalid file name arguement");
236 return(-1);
237 }
238
239 /*
240 * allocate FTREE node and add to the end of the linked list (args are
241 * processed in the same order they were passed to pax). Get rid of any
242 * trailing / the user may pass us. (watch out for / by itself).
243 */
244 if ((ft = (FTREE *)malloc(sizeof(FTREE))) == NULL) {
245 tty_warn(0, "Unable to allocate memory for filename");
246 return(-1);
247 }
248
249 if (((len = strlen(str) - 1) > 0) && (str[len] == '/'))
250 str[len] = '\0';
251 ft->fname = str;
252 ft->refcnt = -isdir;
253 ft->fow = NULL;
254 if (fthead == NULL) {
255 fttail = fthead = ft;
256 return(0);
257 }
258 fttail->fow = ft;
259 fttail = ft;
260 return(0);
261 }
262
263 /*
264 * ftree_sel()
265 * this entry has been selected by pax. bump up reference count and handle
266 * -n and -d processing.
267 */
268
269 void
270 ftree_sel(ARCHD *arcn)
271 {
272 /*
273 * set reference bit for this pattern. This linked list is only used
274 * when file trees are supplied pax as args. The list is not used when
275 * the trees are read from stdin.
276 */
277 if (ftcur != NULL)
278 ftcur->refcnt = 1;
279
280 /*
281 * if -n we are done with this arg, force a skip to the next arg when
282 * pax asks for the next file in next_file().
283 * if -M we don't use fts(3), so the rest of this function is moot.
284 * if -d we tell fts only to match the directory (if the arg is a dir)
285 * and not the entire file tree rooted at that point.
286 */
287 if (nflag)
288 ftree_skip = 1;
289
290 if (Mflag || !dflag || (arcn->type != PAX_DIR))
291 return;
292
293 if (ftent != NULL)
294 (void)fts_set(ftsp, ftent, FTS_SKIP);
295 }
296
297 /*
298 * ftree_chk()
299 * called at end on pax execution. Prints all those file args that did not
300 * have a selected member (reference count still 0)
301 */
302
303 void
304 ftree_chk(void)
305 {
306 FTREE *ft;
307 int wban = 0;
308
309 /*
310 * make sure all dir access times were reset.
311 */
312 if (tflag)
313 atdir_end();
314
315 /*
316 * walk down list and check reference count. Print out those members
317 * that never had a match
318 */
319 for (ft = fthead; ft != NULL; ft = ft->fow) {
320 if (ft->refcnt != 0)
321 continue;
322 if (wban == 0) {
323 tty_warn(1,
324 "WARNING! These file names were not selected:");
325 ++wban;
326 }
327 (void)fprintf(stderr, "%s\n", ft->fname);
328 }
329 }
330
331 /*
332 * ftree_arg()
333 * Get the next file arg for fts to process. Can be from either the linked
334 * list or read from stdin when the user did not them as args to pax. Each
335 * arg is processed until the first successful fts_open().
336 * Return:
337 * 0 when the next arg is ready to go, -1 if out of file args (or EOF on
338 * stdin).
339 */
340
341 static int
342 ftree_arg(void)
343 {
344 char *pt;
345
346 /*
347 * close off the current file tree
348 */
349 if (ftsp != NULL) {
350 (void)fts_close(ftsp);
351 ftsp = NULL;
352 }
353
354 /*
355 * keep looping until we get a valid file tree to process. Stop when we
356 * reach the end of the list (or get an eof on stdin)
357 */
358 for(;;) {
359 if (fthead == NULL) {
360 /*
361 * the user didn't supply any args, get the file trees
362 * to process from stdin;
363 */
364 if (fgets(farray[0], PAXPATHLEN+1, stdin) == NULL)
365 return(-1);
366 if ((pt = strchr(farray[0], '\n')) != NULL)
367 *pt = '\0';
368 } else {
369 /*
370 * the user supplied the file args as arguements to pax
371 */
372 if (ftcur == NULL)
373 ftcur = fthead;
374 else if ((ftcur = ftcur->fow) == NULL)
375 return(-1);
376
377 if (ftcur->refcnt < 0) {
378 /*
379 * chdir entry.
380 * Change directory and retry loop.
381 */
382 if (ar_dochdir(ftcur->fname))
383 return (-1);
384 continue;
385 }
386 farray[0] = ftcur->fname;
387 }
388
389 /*
390 * watch it, fts wants the file arg stored in a array of char
391 * ptrs, with the last one a null. we use a two element array
392 * and set farray[0] to point at the buffer with the file name
393 * in it. We cannot pass all the file args to fts at one shot
394 * as we need to keep a handle on which file arg generates what
395 * files (the -n and -d flags need this). If the open is
396 * successful, return a 0.
397 */
398 if ((ftsp = fts_open(farray, ftsopts, NULL)) != NULL)
399 break;
400 }
401 return(0);
402 }
403
404 /*
405 * next_file()
406 * supplies the next file to process in the supplied archd structure.
407 * Return:
408 * 0 when contents of arcn have been set with the next file, -1 when done.
409 */
410
411 int
412 next_file(ARCHD *arcn)
413 {
414 #ifndef SMALL
415 static char curdir[PAXPATHLEN+2], curpath[PAXPATHLEN+2];
416 static int curdirlen;
417
418 struct stat statbuf;
419 FTSENT Mftent;
420 #endif /* SMALL */
421 int cnt;
422 time_t atime, mtime;
423 char *curlink;
424 #define MFTENT_DUMMY_DEV UINT_MAX
425
426 curlink = NULL;
427 #ifndef SMALL
428 /*
429 * if parsing an mtree(8) specfile, build up `dummy' ftsent
430 * from specfile info, and jump below to complete setup of arcn.
431 */
432 if (Mflag) {
433 int optionalfake;
434
435 next_ftnode:
436 optionalfake = 0;
437 if (ftnode == NULL) /* tree is empty */
438 return (-1);
439
440 /* get current name */
441 if (snprintf(curpath, sizeof(curpath), "%s%s%s",
442 curdir, curdirlen ? "/" : "", ftnode->name)
443 >= sizeof(curpath)) {
444 tty_warn(1, "line %lu: %s: %s", (u_long)ftnode->lineno,
445 curdir, strerror(ENAMETOOLONG));
446 return (-1);
447 }
448 ftnode->flags |= F_VISIT; /* mark node visited */
449
450 /* construct dummy FTSENT */
451 Mftent.fts_path = curpath;
452 Mftent.fts_statp = &statbuf;
453 Mftent.fts_pointer = ftnode;
454 ftent = &Mftent;
455 /* look for existing file */
456 if (lstat(Mftent.fts_path, &statbuf) == -1) {
457 if (ftnode->flags & F_OPT)
458 optionalfake = 1;
459
460 /* missing: fake up stat info */
461 memset(&statbuf, 0, sizeof(statbuf));
462 statbuf.st_dev = MFTENT_DUMMY_DEV;
463 statbuf.st_ino = ftnode->lineno;
464 statbuf.st_size = 0;
465 #define NODETEST(t, m) \
466 if (!(t)) { \
467 tty_warn(1, "line %lu: %s: %s not specified", \
468 (u_long)ftnode->lineno, \
469 ftent->fts_path, m); \
470 return(-1); \
471 }
472 statbuf.st_mode = nodetoino(ftnode->type);
473 NODETEST(ftnode->flags & F_TYPE, "type");
474 NODETEST(ftnode->flags & F_MODE, "mode");
475 if (!(ftnode->flags & F_TIME))
476 statbuf.st_mtime = starttime;
477 NODETEST(ftnode->flags & (F_GID | F_GNAME), "group");
478 NODETEST(ftnode->flags & (F_UID | F_UNAME), "user");
479 if (ftnode->type == F_BLOCK || ftnode->type == F_CHAR)
480 NODETEST(ftnode->flags & F_DEV,
481 "device number");
482 if (ftnode->type == F_LINK)
483 NODETEST(ftnode->flags & F_SLINK, "symlink");
484 /* don't require F_FLAGS or F_SIZE */
485 #undef NODETEST
486 } else {
487 if (ftnode->flags & F_TYPE && nodetoino(ftnode->type)
488 != (statbuf.st_mode & S_IFMT)) {
489 tty_warn(1,
490 "line %lu: %s: type mismatch: specfile %s, tree %s",
491 (u_long)ftnode->lineno, ftent->fts_path,
492 inotype(nodetoino(ftnode->type)),
493 inotype(statbuf.st_mode));
494 return(-1);
495 }
496 }
497 /*
498 * override settings with those from specfile
499 */
500 if (ftnode->flags & F_MODE) {
501 statbuf.st_mode &= ~ALLPERMS;
502 statbuf.st_mode |= (ftnode->st_mode & ALLPERMS);
503 }
504 if (ftnode->flags & (F_GID | F_GNAME))
505 statbuf.st_gid = ftnode->st_gid;
506 if (ftnode->flags & (F_UID | F_UNAME))
507 statbuf.st_uid = ftnode->st_uid;
508 #if HAVE_STRUCT_STAT_ST_FLAGS
509 if (ftnode->flags & F_FLAGS)
510 statbuf.st_flags = ftnode->st_flags;
511 #endif
512 if (ftnode->flags & F_TIME)
513 #ifdef BSD4_4
514 statbuf.st_mtimespec = ftnode->st_mtimespec;
515 #else
516 statbuf.st_mtime = ftnode->st_mtimespec.tv_sec;
517 #endif
518 if (ftnode->flags & F_DEV)
519 statbuf.st_rdev = ftnode->st_rdev;
520 if (ftnode->flags & F_SLINK)
521 curlink = ftnode->slink;
522 /* ignore F_SIZE */
523
524 /*
525 * find next node
526 */
527 if (ftnode->type == F_DIR && ftnode->child != NULL) {
528 /* directory with unseen child */
529 ftnode = ftnode->child;
530 curdirlen = l_strncpy(curdir, curpath, sizeof(curdir));
531 } else do {
532 if (ftnode->next != NULL) {
533 /* next node at current level */
534 ftnode = ftnode->next;
535 } else { /* move back to parent */
536 /* reset time only on first cd.. */
537 if (Mftent.fts_pointer == ftnode && tflag &&
538 (get_atdir(MFTENT_DUMMY_DEV, ftnode->lineno,
539 &mtime, &atime) == 0)) {
540 set_ftime(ftent->fts_path,
541 mtime, atime, 1);
542 }
543 if (ftnode->parent == ftnode)
544 ftnode = NULL;
545 else
546 ftnode = ftnode->parent;
547 if (ftnode != NULL) {
548 curdirlen -= strlen(ftnode->name) + 1;
549 curdir[curdirlen] = '\0';
550 }
551 }
552 } while (ftnode != NULL && ftnode->flags & F_VISIT);
553 if (optionalfake) /* skip optional faked up entries */
554 goto next_ftnode;
555 goto got_ftent;
556 }
557 #endif /* SMALL */
558
559 /*
560 * ftree_sel() might have set the ftree_skip flag if the user has the
561 * -n option and a file was selected from this file arg tree. (-n says
562 * only one member is matched for each pattern) ftree_skip being 1
563 * forces us to go to the next arg now.
564 */
565 if (ftree_skip) {
566 /*
567 * clear and go to next arg
568 */
569 ftree_skip = 0;
570 if (ftree_arg() < 0)
571 return(-1);
572 }
573
574 /*
575 * loop until we get a valid file to process
576 */
577 for(;;) {
578 if ((ftent = fts_read(ftsp)) == NULL) {
579 /*
580 * out of files in this tree, go to next arg, if none
581 * we are done
582 */
583 if (ftree_arg() < 0)
584 return(-1);
585 continue;
586 }
587
588 /*
589 * handle each type of fts_read() flag
590 */
591 switch(ftent->fts_info) {
592 case FTS_D:
593 /*
594 * cpio does *not* decend directories listed in the
595 * arguments, unlike pax/tar, so needs special handling
596 * here. failure to do so results in massive amounts
597 * of duplicated files in the output.
598 */
599 if (cpio_mode)
600 continue;
601 /* FALLTHROUGH */
602 case FTS_DEFAULT:
603 case FTS_F:
604 case FTS_SL:
605 case FTS_SLNONE:
606 /*
607 * these are all ok
608 */
609 break;
610 case FTS_DP:
611 /*
612 * already saw this directory. If the user wants file
613 * access times reset, we use this to restore the
614 * access time for this directory since this is the
615 * last time we will see it in this file subtree
616 * remember to force the time (this is -t on a read
617 * directory, not a created directory).
618 */
619 if (!tflag || (get_atdir(
620 #ifdef NET2_FTS
621 ftent->fts_statb.st_dev, ftent->fts_statb.st_ino,
622 #else
623 ftent->fts_statp->st_dev, ftent->fts_statp->st_ino,
624 #endif
625 &mtime, &atime) < 0))
626 continue;
627 set_ftime(ftent->fts_path, mtime, atime, 1);
628 continue;
629 case FTS_DC:
630 /*
631 * fts claims a file system cycle
632 */
633 tty_warn(1,"File system cycle found at %s",
634 ftent->fts_path);
635 continue;
636 case FTS_DNR:
637 syswarn(1, FTS_ERRNO(ftent),
638 "Unable to read directory %s", ftent->fts_path);
639 continue;
640 case FTS_ERR:
641 syswarn(1, FTS_ERRNO(ftent),
642 "File system traversal error");
643 continue;
644 case FTS_NS:
645 case FTS_NSOK:
646 syswarn(1, FTS_ERRNO(ftent),
647 "Unable to access %s", ftent->fts_path);
648 continue;
649 }
650
651 #ifndef SMALL
652 got_ftent:
653 #endif /* SMALL */
654 /*
655 * ok got a file tree node to process. copy info into arcn
656 * structure (initialize as required)
657 */
658 arcn->skip = 0;
659 arcn->pad = 0;
660 arcn->ln_nlen = 0;
661 arcn->ln_name[0] = '\0';
662 #ifdef NET2_FTS
663 arcn->sb = ftent->fts_statb;
664 #else
665 arcn->sb = *(ftent->fts_statp);
666 #endif
667
668 /*
669 * file type based set up and copy into the arcn struct
670 * SIDE NOTE:
671 * we try to reset the access time on all files and directories
672 * we may read when the -t flag is specified. files are reset
673 * when we close them after copying. we reset the directories
674 * when we are done with their file tree (we also clean up at
675 * end in case we cut short a file tree traversal). However
676 * there is no way to reset access times on symlinks.
677 */
678 switch(S_IFMT & arcn->sb.st_mode) {
679 case S_IFDIR:
680 arcn->type = PAX_DIR;
681 if (!tflag)
682 break;
683 add_atdir(ftent->fts_path, arcn->sb.st_dev,
684 arcn->sb.st_ino, arcn->sb.st_mtime,
685 arcn->sb.st_atime);
686 break;
687 case S_IFCHR:
688 arcn->type = PAX_CHR;
689 break;
690 case S_IFBLK:
691 arcn->type = PAX_BLK;
692 break;
693 case S_IFREG:
694 /*
695 * only regular files with have data to store on the
696 * archive. all others will store a zero length skip.
697 * the skip field is used by pax for actual data it has
698 * to read (or skip over).
699 */
700 arcn->type = PAX_REG;
701 arcn->skip = arcn->sb.st_size;
702 break;
703 case S_IFLNK:
704 arcn->type = PAX_SLK;
705 if (curlink != NULL) {
706 cnt = l_strncpy(arcn->ln_name, curlink,
707 sizeof(arcn->ln_name));
708 /*
709 * have to read the symlink path from the file
710 */
711 } else if ((cnt =
712 readlink(ftent->fts_path, arcn->ln_name,
713 PAXPATHLEN)) < 0) {
714 syswarn(1, errno, "Unable to read symlink %s",
715 ftent->fts_path);
716 continue;
717 }
718 /*
719 * set link name length, watch out readlink does not
720 * allways null terminate the link path
721 */
722 arcn->ln_name[cnt] = '\0';
723 arcn->ln_nlen = cnt;
724 break;
725 case S_IFSOCK:
726 /*
727 * under BSD storing a socket is senseless but we will
728 * let the format specific write function make the
729 * decision of what to do with it.
730 */
731 arcn->type = PAX_SCK;
732 break;
733 case S_IFIFO:
734 arcn->type = PAX_FIF;
735 break;
736 }
737 break;
738 }
739
740 /*
741 * copy file name, set file name length
742 */
743 arcn->nlen = l_strncpy(arcn->name, ftent->fts_path, PAXPATHLEN+1);
744 arcn->name[arcn->nlen] = '\0';
745 arcn->org_name = ftent->fts_path;
746 return(0);
747 }
748