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