1 /*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1983, 1993
5 * The Regents of the University of California. All rights reserved.
6 * (c) UNIX System Laboratories, Inc.
7 * All or some portions of this file are derived from material licensed
8 * to the University of California by American Telephone and Telegraph
9 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
10 * the permission of UNIX System Laboratories, Inc.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 * 3. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 */
36
37 #ifndef lint
38 #if 0
39 static char sccsid[] = "@(#)dirs.c 8.7 (Berkeley) 5/1/95";
40 #endif
41 static const char rcsid[] =
42 "$FreeBSD$";
43 #endif /* not lint */
44
45 #include <sys/param.h>
46 #include <sys/file.h>
47 #include <sys/stat.h>
48 #include <sys/time.h>
49
50 #include <ufs/ufs/dinode.h>
51 #include <ufs/ufs/dir.h>
52 #include <protocols/dumprestore.h>
53
54 #include <err.h>
55 #include <errno.h>
56 #include <limits.h>
57 #include <paths.h>
58 #include <stdint.h>
59 #include <stdio.h>
60 #include <stdlib.h>
61 #include <string.h>
62 #include <unistd.h>
63
64 #include "restore.h"
65 #include "extern.h"
66
67 /*
68 * Symbol table of directories read from tape.
69 */
70 #define HASHSIZE 1000
71 #define INOHASH(val) (val % HASHSIZE)
72 struct inotab {
73 struct inotab *t_next;
74 ino_t t_ino;
75 int32_t t_seekpt;
76 int32_t t_size;
77 };
78 static struct inotab *inotab[HASHSIZE];
79
80 /*
81 * Information retained about directories.
82 */
83 struct modeinfo {
84 ino_t ino;
85 struct timespec ctimep[2];
86 struct timespec mtimep[2];
87 mode_t mode;
88 uid_t uid;
89 gid_t gid;
90 u_int flags;
91 int extsize;
92 };
93
94 /*
95 * Definitions for library routines operating on directories.
96 */
97 #undef DIRBLKSIZ
98 #define DIRBLKSIZ 1024
99 struct rstdirdesc {
100 int dd_fd;
101 int32_t dd_loc;
102 int32_t dd_size;
103 char dd_buf[DIRBLKSIZ];
104 };
105
106 /*
107 * Global variables for this file.
108 */
109 static long seekpt;
110 static FILE *df, *mf;
111 static RST_DIR *dirp;
112 static char dirfile[MAXPATHLEN] = "#"; /* No file */
113 static char modefile[MAXPATHLEN] = "#"; /* No file */
114 static char dot[2] = "."; /* So it can be modified */
115
116 static struct inotab *allocinotab(struct context *, long);
117 static void flushent(void);
118 static struct inotab *inotablookup(ino_t);
119 static RST_DIR *opendirfile(const char *);
120 static void putdir(char *, size_t);
121 static void putdirattrs(char *, size_t);
122 static void putent(struct direct *);
123 static void rst_seekdir(RST_DIR *, long, long);
124 static long rst_telldir(RST_DIR *);
125 static struct direct *searchdir(ino_t, char *);
126 static void fail_dirtmp(char *);
127
128 /*
129 * Extract directory contents, building up a directory structure
130 * on disk for extraction by name.
131 * If genmode is requested, save mode, owner, and times for all
132 * directories on the tape.
133 */
134 void
extractdirs(int genmode)135 extractdirs(int genmode)
136 {
137 struct inotab *itp;
138 struct direct nulldir;
139 int i, fd;
140 const char *tmpdir;
141
142 vprintf(stdout, "Extract directories from tape\n");
143 if ((tmpdir = getenv("TMPDIR")) == NULL || tmpdir[0] == '\0')
144 tmpdir = _PATH_TMP;
145 (void) snprintf(dirfile, sizeof(dirfile), "%s/rstdir%jd", tmpdir,
146 (intmax_t)dumpdate);
147 if (command != 'r' && command != 'R') {
148 (void) strcat(dirfile, "-XXXXXX");
149 fd = mkstemp(dirfile);
150 } else
151 fd = open(dirfile, O_RDWR|O_CREAT|O_EXCL, 0666);
152 if (fd == -1 || (df = fdopen(fd, "w")) == NULL) {
153 if (fd != -1)
154 close(fd);
155 warn("%s: cannot create directory database", dirfile);
156 done(1);
157 }
158 if (genmode != 0) {
159 (void) snprintf(modefile, sizeof(modefile), "%s/rstmode%jd",
160 tmpdir, (intmax_t)dumpdate);
161 if (command != 'r' && command != 'R') {
162 (void) strcat(modefile, "-XXXXXX");
163 fd = mkstemp(modefile);
164 } else
165 fd = open(modefile, O_RDWR|O_CREAT|O_EXCL, 0666);
166 if (fd == -1 || (mf = fdopen(fd, "w")) == NULL) {
167 if (fd != -1)
168 close(fd);
169 warn("%s: cannot create modefile", modefile);
170 done(1);
171 }
172 }
173 nulldir.d_ino = 0;
174 nulldir.d_type = DT_DIR;
175 nulldir.d_namlen = 1;
176 (void) strcpy(nulldir.d_name, "/");
177 nulldir.d_reclen = DIRSIZ(0, &nulldir);
178 for (;;) {
179 curfile.name = "<directory file - name unknown>";
180 curfile.action = USING;
181 if (curfile.mode == 0 || (curfile.mode & IFMT) != IFDIR)
182 break;
183 itp = allocinotab(&curfile, seekpt);
184 getfile(putdir, putdirattrs, xtrnull);
185 putent(&nulldir);
186 flushent();
187 itp->t_size = seekpt - itp->t_seekpt;
188 }
189 if (fclose(df) != 0)
190 fail_dirtmp(dirfile);
191 dirp = opendirfile(dirfile);
192 if (dirp == NULL)
193 fprintf(stderr, "opendirfile: %s\n", strerror(errno));
194 if (mf != NULL && fclose(mf) != 0)
195 fail_dirtmp(modefile);
196 i = dirlookup(dot);
197 if (i == 0)
198 panic("Root directory is not on tape\n");
199 }
200
201 /*
202 * skip over all the directories on the tape
203 */
204 void
skipdirs(void)205 skipdirs(void)
206 {
207
208 while (curfile.ino && (curfile.mode & IFMT) == IFDIR) {
209 skipfile();
210 }
211 }
212
213 /*
214 * Recursively find names and inumbers of all files in subtree
215 * pname and pass them off to be processed.
216 */
217 void
treescan(char * pname,ino_t ino,long (* todo)(char *,ino_t,int))218 treescan(char *pname, ino_t ino, long (*todo)(char *, ino_t, int))
219 {
220 struct inotab *itp;
221 struct direct *dp;
222 int namelen;
223 long bpt;
224 char locname[MAXPATHLEN];
225
226 itp = inotablookup(ino);
227 if (itp == NULL) {
228 /*
229 * Pname is name of a simple file or an unchanged directory.
230 */
231 (void) (*todo)(pname, ino, LEAF);
232 return;
233 }
234 /*
235 * Pname is a dumped directory name.
236 */
237 if ((*todo)(pname, ino, NODE) == FAIL)
238 return;
239 /*
240 * begin search through the directory
241 * skipping over "." and ".."
242 */
243 (void) strlcpy(locname, pname, sizeof(locname));
244 (void) strlcat(locname, "/", sizeof(locname));
245 namelen = strlen(locname);
246 rst_seekdir(dirp, itp->t_seekpt, itp->t_seekpt);
247 dp = rst_readdir(dirp); /* "." */
248 if (dp != NULL && strcmp(dp->d_name, ".") == 0)
249 dp = rst_readdir(dirp); /* ".." */
250 else
251 fprintf(stderr, "Warning: `.' missing from directory %s\n",
252 pname);
253 if (dp != NULL && strcmp(dp->d_name, "..") == 0)
254 dp = rst_readdir(dirp); /* first real entry */
255 else
256 fprintf(stderr, "Warning: `..' missing from directory %s\n",
257 pname);
258 bpt = rst_telldir(dirp);
259 /*
260 * a zero inode signals end of directory
261 */
262 while (dp != NULL) {
263 locname[namelen] = '\0';
264 if (namelen + dp->d_namlen >= sizeof(locname)) {
265 fprintf(stderr, "%s%s: name exceeds %zu char\n",
266 locname, dp->d_name, sizeof(locname) - 1);
267 } else {
268 (void)strlcat(locname, dp->d_name, sizeof(locname));
269 treescan(locname, dp->d_ino, todo);
270 rst_seekdir(dirp, bpt, itp->t_seekpt);
271 }
272 dp = rst_readdir(dirp);
273 bpt = rst_telldir(dirp);
274 }
275 }
276
277 /*
278 * Lookup a pathname which is always assumed to start from the UFS_ROOTINO.
279 */
280 struct direct *
pathsearch(const char * pathname)281 pathsearch(const char *pathname)
282 {
283 ino_t ino;
284 struct direct *dp;
285 char *path, *name, buffer[MAXPATHLEN];
286
287 strcpy(buffer, pathname);
288 path = buffer;
289 ino = UFS_ROOTINO;
290 while (*path == '/')
291 path++;
292 dp = NULL;
293 while ((name = strsep(&path, "/")) != NULL && *name != '\0') {
294 if ((dp = searchdir(ino, name)) == NULL)
295 return (NULL);
296 ino = dp->d_ino;
297 }
298 return (dp);
299 }
300
301 /*
302 * Lookup the requested name in directory inum.
303 * Return its inode number if found, zero if it does not exist.
304 */
305 static struct direct *
searchdir(ino_t inum,char * name)306 searchdir(ino_t inum, char *name)
307 {
308 struct direct *dp;
309 struct inotab *itp;
310 int len;
311
312 itp = inotablookup(inum);
313 if (itp == NULL)
314 return (NULL);
315 rst_seekdir(dirp, itp->t_seekpt, itp->t_seekpt);
316 len = strlen(name);
317 do {
318 dp = rst_readdir(dirp);
319 if (dp == NULL)
320 return (NULL);
321 } while (dp->d_namlen != len || strncmp(dp->d_name, name, len) != 0);
322 return (dp);
323 }
324
325 /*
326 * Put the directory entries in the directory file
327 */
328 static void
putdir(char * buf,size_t size)329 putdir(char *buf, size_t size)
330 {
331 struct direct *dp;
332 size_t loc, i;
333
334 for (loc = 0; loc < size; ) {
335 dp = (struct direct *)(buf + loc);
336 if (Bcvt)
337 swabst((u_char *)"ls", (u_char *) dp);
338 if (oldinofmt && dp->d_ino != 0) {
339 #if BYTE_ORDER == BIG_ENDIAN
340 if (Bcvt)
341 dp->d_namlen = dp->d_type;
342 #else
343 if (!Bcvt && dp->d_namlen == 0)
344 dp->d_namlen = dp->d_type;
345 #endif
346 dp->d_type = DT_UNKNOWN;
347 }
348 i = DIRBLKSIZ - (loc & (DIRBLKSIZ - 1));
349 if ((dp->d_reclen & 0x3) != 0 ||
350 dp->d_reclen > i ||
351 dp->d_reclen < DIRSIZ(0, dp)
352 #if NAME_MAX < 255
353 || dp->d_namlen > NAME_MAX
354 #endif
355 ) {
356 vprintf(stdout, "Mangled directory: ");
357 if ((dp->d_reclen & 0x3) != 0)
358 vprintf(stdout,
359 "reclen not multiple of 4 ");
360 if (dp->d_reclen < DIRSIZ(0, dp))
361 vprintf(stdout,
362 "reclen less than DIRSIZ (%u < %zu) ",
363 dp->d_reclen, DIRSIZ(0, dp));
364 #if NAME_MAX < 255
365 if (dp->d_namlen > NAME_MAX)
366 vprintf(stdout,
367 "reclen name too big (%u > %u) ",
368 dp->d_namlen, NAME_MAX);
369 #endif
370 vprintf(stdout, "\n");
371 loc += i;
372 continue;
373 }
374 loc += dp->d_reclen;
375 if (dp->d_ino != 0) {
376 putent(dp);
377 }
378 }
379 }
380
381 /*
382 * These variables are "local" to the following two functions.
383 */
384 char dirbuf[DIRBLKSIZ];
385 long dirloc = 0;
386 long prev = 0;
387
388 /*
389 * add a new directory entry to a file.
390 */
391 static void
putent(struct direct * dp)392 putent(struct direct *dp)
393 {
394 dp->d_reclen = DIRSIZ(0, dp);
395 if (dirloc + dp->d_reclen > DIRBLKSIZ) {
396 ((struct direct *)(dirbuf + prev))->d_reclen =
397 DIRBLKSIZ - prev;
398 if (fwrite(dirbuf, DIRBLKSIZ, 1, df) != 1)
399 fail_dirtmp(dirfile);
400 dirloc = 0;
401 }
402 memmove(dirbuf + dirloc, dp, (long)dp->d_reclen);
403 prev = dirloc;
404 dirloc += dp->d_reclen;
405 }
406
407 /*
408 * flush out a directory that is finished.
409 */
410 static void
flushent(void)411 flushent(void)
412 {
413 ((struct direct *)(dirbuf + prev))->d_reclen = DIRBLKSIZ - prev;
414 if (fwrite(dirbuf, (int)dirloc, 1, df) != 1)
415 fail_dirtmp(dirfile);
416 seekpt = ftell(df);
417 dirloc = 0;
418 }
419
420 /*
421 * Save extended attributes for a directory entry to a file.
422 */
423 static void
putdirattrs(char * buf,size_t size)424 putdirattrs(char *buf, size_t size)
425 {
426
427 if (mf != NULL && fwrite(buf, size, 1, mf) != 1)
428 fail_dirtmp(modefile);
429 }
430
431 /*
432 * Seek to an entry in a directory.
433 * Only values returned by rst_telldir should be passed to rst_seekdir.
434 * This routine handles many directories in a single file.
435 * It takes the base of the directory in the file, plus
436 * the desired seek offset into it.
437 */
438 static void
rst_seekdir(RST_DIR * dirp,long loc,long base)439 rst_seekdir(RST_DIR *dirp, long loc, long base)
440 {
441
442 if (loc == rst_telldir(dirp))
443 return;
444 loc -= base;
445 if (loc < 0)
446 fprintf(stderr, "bad seek pointer to rst_seekdir %ld\n", loc);
447 (void) lseek(dirp->dd_fd, base + rounddown2(loc, DIRBLKSIZ), SEEK_SET);
448 dirp->dd_loc = loc & (DIRBLKSIZ - 1);
449 if (dirp->dd_loc != 0)
450 dirp->dd_size = read(dirp->dd_fd, dirp->dd_buf, DIRBLKSIZ);
451 }
452
453 /*
454 * get next entry in a directory.
455 */
456 struct direct *
rst_readdir(RST_DIR * dirp)457 rst_readdir(RST_DIR *dirp)
458 {
459 struct direct *dp;
460
461 for (;;) {
462 if (dirp->dd_loc == 0) {
463 dirp->dd_size = read(dirp->dd_fd, dirp->dd_buf,
464 DIRBLKSIZ);
465 if (dirp->dd_size <= 0) {
466 dprintf(stderr, "error reading directory\n");
467 return (NULL);
468 }
469 }
470 if (dirp->dd_loc >= dirp->dd_size) {
471 dirp->dd_loc = 0;
472 continue;
473 }
474 dp = (struct direct *)(dirp->dd_buf + dirp->dd_loc);
475 if (dp->d_reclen == 0 ||
476 dp->d_reclen > DIRBLKSIZ + 1 - dirp->dd_loc) {
477 dprintf(stderr, "corrupted directory: bad reclen %d\n",
478 dp->d_reclen);
479 return (NULL);
480 }
481 dirp->dd_loc += dp->d_reclen;
482 if (dp->d_ino == 0 && strcmp(dp->d_name, "/") == 0)
483 return (NULL);
484 if (dp->d_ino >= maxino) {
485 dprintf(stderr, "corrupted directory: bad inum %d\n",
486 dp->d_ino);
487 continue;
488 }
489 return (dp);
490 }
491 }
492
493 /*
494 * Simulate the opening of a directory
495 */
496 void *
rst_opendir(const char * name)497 rst_opendir(const char *name)
498 {
499 struct inotab *itp;
500 RST_DIR *dirp;
501 ino_t ino;
502
503 if ((ino = dirlookup(name)) > 0 &&
504 (itp = inotablookup(ino)) != NULL) {
505 dirp = opendirfile(dirfile);
506 rst_seekdir(dirp, itp->t_seekpt, itp->t_seekpt);
507 return (dirp);
508 }
509 return (NULL);
510 }
511
512 /*
513 * In our case, there is nothing to do when closing a directory.
514 */
515 void
rst_closedir(void * arg)516 rst_closedir(void *arg)
517 {
518 RST_DIR *dirp;
519
520 dirp = arg;
521 (void)close(dirp->dd_fd);
522 free(dirp);
523 return;
524 }
525
526 /*
527 * Simulate finding the current offset in the directory.
528 */
529 static long
rst_telldir(RST_DIR * dirp)530 rst_telldir(RST_DIR *dirp)
531 {
532 return ((long)lseek(dirp->dd_fd,
533 (off_t)0, SEEK_CUR) - dirp->dd_size + dirp->dd_loc);
534 }
535
536 /*
537 * Open a directory file.
538 */
539 static RST_DIR *
opendirfile(const char * name)540 opendirfile(const char *name)
541 {
542 RST_DIR *dirp;
543 int fd;
544
545 if ((fd = open(name, O_RDONLY)) == -1)
546 return (NULL);
547 if ((dirp = malloc(sizeof(RST_DIR))) == NULL) {
548 (void)close(fd);
549 return (NULL);
550 }
551 dirp->dd_fd = fd;
552 dirp->dd_loc = 0;
553 return (dirp);
554 }
555
556 /*
557 * Set the mode, owner, and times for all new or changed directories
558 */
559 void
setdirmodes(int flags)560 setdirmodes(int flags)
561 {
562 FILE *mf;
563 struct modeinfo node;
564 struct entry *ep;
565 char *cp, *buf;
566 const char *tmpdir;
567 int bufsize;
568 uid_t myuid;
569
570 vprintf(stdout, "Set directory mode, owner, and times.\n");
571 if ((tmpdir = getenv("TMPDIR")) == NULL || tmpdir[0] == '\0')
572 tmpdir = _PATH_TMP;
573 if (command == 'r' || command == 'R')
574 (void) snprintf(modefile, sizeof(modefile), "%s/rstmode%jd",
575 tmpdir, (intmax_t)dumpdate);
576 if (modefile[0] == '#') {
577 panic("modefile not defined\n");
578 fprintf(stderr, "directory mode, owner, and times not set\n");
579 return;
580 }
581 mf = fopen(modefile, "r");
582 if (mf == NULL) {
583 fprintf(stderr, "fopen: %s\n", strerror(errno));
584 fprintf(stderr, "cannot open mode file %s\n", modefile);
585 fprintf(stderr, "directory mode, owner, and times not set\n");
586 return;
587 }
588 clearerr(mf);
589 bufsize = 0;
590 myuid = getuid();
591 for (;;) {
592 (void) fread((char *)&node, 1, sizeof(struct modeinfo), mf);
593 if (ferror(mf)) {
594 warn("%s: cannot read modefile.", modefile);
595 fprintf(stderr, "Mode, owner, and times not set.\n");
596 break;
597 }
598 if (feof(mf))
599 break;
600 if (node.extsize > 0) {
601 if (bufsize < node.extsize) {
602 if (bufsize > 0)
603 free(buf);
604 if ((buf = malloc(node.extsize)) != NULL) {
605 bufsize = node.extsize;
606 } else {
607 bufsize = 0;
608 }
609 }
610 if (bufsize >= node.extsize) {
611 (void) fread(buf, 1, node.extsize, mf);
612 if (ferror(mf)) {
613 warn("%s: cannot read modefile.",
614 modefile);
615 fprintf(stderr, "Not all external ");
616 fprintf(stderr, "attributes set.\n");
617 break;
618 }
619 } else {
620 (void) fseek(mf, node.extsize, SEEK_CUR);
621 if (ferror(mf)) {
622 warn("%s: cannot seek in modefile.",
623 modefile);
624 fprintf(stderr, "Not all directory ");
625 fprintf(stderr, "attributes set.\n");
626 break;
627 }
628 }
629 }
630 ep = lookupino(node.ino);
631 if (command == 'i' || command == 'x') {
632 if (ep == NULL)
633 continue;
634 if ((flags & FORCE) == 0 && ep->e_flags & EXISTED) {
635 ep->e_flags &= ~NEW;
636 continue;
637 }
638 if (node.ino == UFS_ROOTINO &&
639 reply("set owner/mode for '.'") == FAIL)
640 continue;
641 }
642 if (ep == NULL) {
643 panic("cannot find directory inode %ju\n",
644 (uintmax_t)node.ino);
645 continue;
646 }
647 cp = myname(ep);
648 if (!Nflag) {
649 if (node.extsize > 0) {
650 if (bufsize >= node.extsize) {
651 set_extattr(-1, cp, buf, node.extsize, SXA_FILE);
652 } else {
653 fprintf(stderr, "Cannot restore %s%s\n",
654 "extended attributes for ", cp);
655 }
656 }
657 if (myuid != 0)
658 (void) chown(cp, myuid, node.gid);
659 else
660 (void) chown(cp, node.uid, node.gid);
661 (void) chmod(cp, node.mode);
662 utimensat(AT_FDCWD, cp, node.ctimep, 0);
663 utimensat(AT_FDCWD, cp, node.mtimep, 0);
664 (void) chflags(cp, node.flags);
665 }
666 ep->e_flags &= ~NEW;
667 }
668 if (bufsize > 0)
669 free(buf);
670 (void) fclose(mf);
671 }
672
673 /*
674 * Generate a literal copy of a directory.
675 */
676 int
genliteraldir(char * name,ino_t ino)677 genliteraldir(char *name, ino_t ino)
678 {
679 struct inotab *itp;
680 int ofile, dp, i, size;
681 char buf[BUFSIZ];
682
683 itp = inotablookup(ino);
684 if (itp == NULL)
685 panic("Cannot find directory inode %ju named %s\n",
686 (uintmax_t)ino, name);
687 if ((ofile = open(name, O_WRONLY | O_CREAT | O_TRUNC, 0666)) < 0) {
688 fprintf(stderr, "%s: ", name);
689 (void) fflush(stderr);
690 fprintf(stderr, "cannot create file: %s\n", strerror(errno));
691 return (FAIL);
692 }
693 rst_seekdir(dirp, itp->t_seekpt, itp->t_seekpt);
694 dp = dup(dirp->dd_fd);
695 for (i = itp->t_size; i > 0; i -= BUFSIZ) {
696 size = MIN(i, BUFSIZ);
697 if (read(dp, buf, (int) size) == -1) {
698 fprintf(stderr,
699 "write error extracting inode %ju, name %s\n",
700 (uintmax_t)curfile.ino, curfile.name);
701 fprintf(stderr, "read: %s\n", strerror(errno));
702 done(1);
703 }
704 if (!Nflag && write(ofile, buf, (int) size) == -1) {
705 fprintf(stderr,
706 "write error extracting inode %ju, name %s\n",
707 (uintmax_t)curfile.ino, curfile.name);
708 fprintf(stderr, "write: %s\n", strerror(errno));
709 done(1);
710 }
711 }
712 (void) close(dp);
713 (void) close(ofile);
714 return (GOOD);
715 }
716
717 /*
718 * Determine the type of an inode
719 */
720 int
inodetype(ino_t ino)721 inodetype(ino_t ino)
722 {
723 struct inotab *itp;
724
725 itp = inotablookup(ino);
726 if (itp == NULL)
727 return (LEAF);
728 return (NODE);
729 }
730
731 /*
732 * Allocate and initialize a directory inode entry.
733 * If requested, save its pertinent mode, owner, and time info.
734 */
735 static struct inotab *
allocinotab(struct context * ctxp,long seekpt)736 allocinotab(struct context *ctxp, long seekpt)
737 {
738 struct inotab *itp;
739 struct modeinfo node;
740
741 itp = calloc(1, sizeof(struct inotab));
742 if (itp == NULL)
743 panic("no memory for directory table\n");
744 itp->t_next = inotab[INOHASH(ctxp->ino)];
745 inotab[INOHASH(ctxp->ino)] = itp;
746 itp->t_ino = ctxp->ino;
747 itp->t_seekpt = seekpt;
748 if (mf == NULL)
749 return (itp);
750 node.ino = ctxp->ino;
751 node.mtimep[0].tv_sec = ctxp->atime_sec;
752 node.mtimep[0].tv_nsec = ctxp->atime_nsec;
753 node.mtimep[1].tv_sec = ctxp->mtime_sec;
754 node.mtimep[1].tv_nsec = ctxp->mtime_nsec;
755 node.ctimep[0].tv_sec = ctxp->atime_sec;
756 node.ctimep[0].tv_nsec = ctxp->atime_nsec;
757 node.ctimep[1].tv_sec = ctxp->birthtime_sec;
758 node.ctimep[1].tv_nsec = ctxp->birthtime_nsec;
759 node.extsize = ctxp->extsize;
760 node.mode = ctxp->mode;
761 node.flags = ctxp->file_flags;
762 node.uid = ctxp->uid;
763 node.gid = ctxp->gid;
764 if (fwrite((char *)&node, sizeof(struct modeinfo), 1, mf) != 1)
765 fail_dirtmp(modefile);
766 return (itp);
767 }
768
769 /*
770 * Look up an inode in the table of directories
771 */
772 static struct inotab *
inotablookup(ino_t ino)773 inotablookup(ino_t ino)
774 {
775 struct inotab *itp;
776
777 for (itp = inotab[INOHASH(ino)]; itp != NULL; itp = itp->t_next)
778 if (itp->t_ino == ino)
779 return (itp);
780 return (NULL);
781 }
782
783 /*
784 * Clean up and exit
785 */
786 void
done(int exitcode)787 done(int exitcode)
788 {
789
790 closemt();
791 if (modefile[0] != '#') {
792 (void) truncate(modefile, 0);
793 (void) unlink(modefile);
794 }
795 if (dirfile[0] != '#') {
796 (void) truncate(dirfile, 0);
797 (void) unlink(dirfile);
798 }
799 exit(exitcode);
800 }
801
802 /*
803 * Print out information about the failure to save directory,
804 * extended attribute, and mode information.
805 */
806 static void
fail_dirtmp(char * filename)807 fail_dirtmp(char *filename)
808 {
809 const char *tmpdir;
810
811 warn("%s: cannot write directory database", filename);
812 if (errno == ENOSPC) {
813 if ((tmpdir = getenv("TMPDIR")) == NULL || tmpdir[0] == '\0')
814 tmpdir = _PATH_TMP;
815 fprintf(stderr, "Try making space in %s, %s\n%s\n", tmpdir,
816 "or set environment variable TMPDIR",
817 "to an alternate location with more disk space.");
818 }
819 done(1);
820 }
821