]>
Commit | Line | Data |
---|---|---|
1227625a SP |
1 | /* |
2 | * Ported to Linux's Second Extended File System as part of the | |
3 | * dump and restore backup suit | |
4 | * Remy Card <card@Linux.EU.Org>, 1994, 1995, 1996 | |
5 | * | |
6 | */ | |
7 | ||
8 | /* | |
9 | * Copyright (c) 1983, 1993 | |
10 | * The Regents of the University of California. All rights reserved. | |
11 | * (c) UNIX System Laboratories, Inc. | |
12 | * All or some portions of this file are derived from material licensed | |
13 | * to the University of California by American Telephone and Telegraph | |
14 | * Co. or Unix System Laboratories, Inc. and are reproduced herein with | |
15 | * the permission of UNIX System Laboratories, Inc. | |
16 | * | |
17 | * Redistribution and use in source and binary forms, with or without | |
18 | * modification, are permitted provided that the following conditions | |
19 | * are met: | |
20 | * 1. Redistributions of source code must retain the above copyright | |
21 | * notice, this list of conditions and the following disclaimer. | |
22 | * 2. Redistributions in binary form must reproduce the above copyright | |
23 | * notice, this list of conditions and the following disclaimer in the | |
24 | * documentation and/or other materials provided with the distribution. | |
25 | * 3. All advertising materials mentioning features or use of this software | |
26 | * must display the following acknowledgement: | |
27 | * This product includes software developed by the University of | |
28 | * California, Berkeley and its contributors. | |
29 | * 4. Neither the name of the University nor the names of its contributors | |
30 | * may be used to endorse or promote products derived from this software | |
31 | * without specific prior written permission. | |
32 | * | |
33 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
34 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
35 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
36 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
37 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
38 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
39 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
40 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
41 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
42 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
43 | * SUCH DAMAGE. | |
44 | */ | |
45 | ||
46 | #ifndef lint | |
47 | static char sccsid[] = "@(#)dirs.c 8.7 (Berkeley) 5/1/95"; | |
48 | #endif /* not lint */ | |
49 | ||
50 | #include <sys/param.h> | |
51 | #include <sys/file.h> | |
52 | #include <sys/stat.h> | |
53 | #include <sys/time.h> | |
54 | ||
55 | #ifdef __linux__ | |
56 | #include <linux/ext2_fs.h> | |
57 | #include <bsdcompat.h> | |
58 | #else /* __linux__ */ | |
59 | #include <ufs/ufs/dinode.h> | |
60 | #include <ufs/ufs/dir.h> | |
61 | #include <ufs/ffs/fs.h> | |
62 | #endif /* __linux__ */ | |
63 | #include <protocols/dumprestore.h> | |
64 | ||
65 | #include <errno.h> | |
66 | #include <stdio.h> | |
67 | #include <stdlib.h> | |
68 | #include <string.h> | |
69 | #include <unistd.h> | |
70 | ||
71 | #ifdef __linux__ | |
72 | #include <endian.h> | |
73 | #else | |
74 | #include <machine/endian.h> | |
75 | #endif | |
76 | ||
77 | #include "pathnames.h" | |
78 | #include "restore.h" | |
79 | #include "extern.h" | |
80 | ||
81 | /* | |
82 | * Symbol table of directories read from tape. | |
83 | */ | |
84 | #define HASHSIZE 1000 | |
85 | #define INOHASH(val) (val % HASHSIZE) | |
86 | struct inotab { | |
87 | struct inotab *t_next; | |
88 | ino_t t_ino; | |
89 | long t_seekpt; | |
90 | long t_size; | |
91 | }; | |
92 | static struct inotab *inotab[HASHSIZE]; | |
93 | ||
94 | /* | |
95 | * Information retained about directories. | |
96 | */ | |
97 | struct modeinfo { | |
98 | ino_t ino; | |
99 | struct timeval timep[2]; | |
100 | mode_t mode; | |
101 | uid_t uid; | |
102 | gid_t gid; | |
103 | int flags; | |
104 | }; | |
105 | ||
106 | /* | |
107 | * Definitions for library routines operating on directories. | |
108 | */ | |
109 | #undef DIRBLKSIZ | |
110 | #define DIRBLKSIZ 1024 | |
111 | struct rstdirdesc { | |
112 | int dd_fd; | |
113 | long dd_loc; | |
114 | long dd_size; | |
115 | char dd_buf[DIRBLKSIZ]; | |
116 | }; | |
117 | ||
118 | /* | |
119 | * Global variables for this file. | |
120 | */ | |
121 | static long seekpt; | |
122 | static FILE *df, *mf; | |
123 | static RST_DIR *dirp; | |
124 | static char dirfile[32] = "#"; /* No file */ | |
125 | static char modefile[32] = "#"; /* No file */ | |
126 | static char dot[2] = "."; /* So it can be modified */ | |
127 | ||
128 | /* | |
129 | * Format of old style directories. | |
130 | */ | |
131 | #define ODIRSIZ 14 | |
132 | struct odirect { | |
133 | u_short d_ino; | |
134 | char d_name[ODIRSIZ]; | |
135 | }; | |
136 | ||
137 | #ifdef __linux__ | |
138 | static struct inotab *allocinotab __P((ino_t, struct new_bsd_inode *, long)); | |
139 | #else | |
140 | static struct inotab *allocinotab __P((ino_t, struct dinode *, long)); | |
141 | #endif | |
142 | static void dcvt __P((struct odirect *, struct direct *)); | |
143 | static void flushent __P((void)); | |
144 | static struct inotab *inotablookup __P((ino_t)); | |
145 | static RST_DIR *opendirfile __P((const char *)); | |
146 | static void putdir __P((char *, long)); | |
147 | static void putent __P((struct direct *)); | |
148 | static void rst_seekdir __P((RST_DIR *, long, long)); | |
149 | static long rst_telldir __P((RST_DIR *)); | |
150 | static struct direct *searchdir __P((ino_t, char *)); | |
151 | ||
152 | /* | |
153 | * Extract directory contents, building up a directory structure | |
154 | * on disk for extraction by name. | |
155 | * If genmode is requested, save mode, owner, and times for all | |
156 | * directories on the tape. | |
157 | */ | |
158 | void | |
159 | extractdirs(genmode) | |
160 | int genmode; | |
161 | { | |
162 | register int i; | |
163 | #ifdef __linux__ | |
164 | register struct new_bsd_inode *ip; | |
165 | #else | |
166 | register struct dinode *ip; | |
167 | #endif | |
168 | struct inotab *itp; | |
169 | struct direct nulldir; | |
170 | ||
171 | vprintf(stdout, "Extract directories from tape\n"); | |
172 | (void) sprintf(dirfile, "%s/rstdir%d", tmpdir, dumpdate); | |
173 | df = fopen(dirfile, "w"); | |
174 | if (df == NULL) { | |
175 | fprintf(stderr, | |
176 | "restore: %s - cannot create directory temporary\n", | |
177 | dirfile); | |
178 | fprintf(stderr, "fopen: %s\n", strerror(errno)); | |
179 | done(1); | |
180 | } | |
181 | if (genmode != 0) { | |
182 | (void) sprintf(modefile, "%s/rstmode%d", tmpdir, dumpdate); | |
183 | mf = fopen(modefile, "w"); | |
184 | if (mf == NULL) { | |
185 | fprintf(stderr, | |
186 | "restore: %s - cannot create modefile \n", | |
187 | modefile); | |
188 | fprintf(stderr, "fopen: %s\n", strerror(errno)); | |
189 | done(1); | |
190 | } | |
191 | } | |
192 | nulldir.d_ino = 0; | |
193 | #ifdef __linux__ | |
194 | nulldir.d_type = DT_DIR; | |
195 | #endif | |
196 | nulldir.d_namlen = 1; | |
197 | (void) strcpy(nulldir.d_name, "/"); | |
198 | nulldir.d_reclen = DIRSIZ(0, &nulldir); | |
199 | for (;;) { | |
200 | curfile.name = "<directory file - name unknown>"; | |
201 | curfile.action = USING; | |
202 | ip = curfile.dip; | |
203 | if (ip == NULL || (ip->di_mode & IFMT) != IFDIR) { | |
204 | (void) fclose(df); | |
205 | dirp = opendirfile(dirfile); | |
206 | if (dirp == NULL) | |
207 | fprintf(stderr, "opendirfile: %s\n", | |
208 | strerror(errno)); | |
209 | if (mf != NULL) | |
210 | (void) fclose(mf); | |
211 | i = dirlookup(dot); | |
212 | if (i == 0) | |
213 | panic("Root directory is not on tape\n"); | |
214 | return; | |
215 | } | |
216 | itp = allocinotab(curfile.ino, ip, seekpt); | |
217 | getfile(putdir, xtrnull); | |
218 | putent(&nulldir); | |
219 | flushent(); | |
220 | itp->t_size = seekpt - itp->t_seekpt; | |
221 | } | |
222 | } | |
223 | ||
224 | /* | |
225 | * skip over all the directories on the tape | |
226 | */ | |
227 | void | |
228 | skipdirs() | |
229 | { | |
230 | ||
231 | while (curfile.dip && (curfile.dip->di_mode & IFMT) == IFDIR) { | |
232 | skipfile(); | |
233 | } | |
234 | } | |
235 | ||
236 | /* | |
237 | * Recursively find names and inumbers of all files in subtree | |
238 | * pname and pass them off to be processed. | |
239 | */ | |
240 | void | |
241 | treescan(pname, ino, todo) | |
242 | char *pname; | |
243 | ino_t ino; | |
244 | long (*todo) __P((char *, ino_t, int)); | |
245 | { | |
246 | register struct inotab *itp; | |
247 | register struct direct *dp; | |
248 | int namelen; | |
249 | long bpt; | |
250 | char locname[MAXPATHLEN + 1]; | |
251 | ||
252 | itp = inotablookup(ino); | |
253 | if (itp == NULL) { | |
254 | /* | |
255 | * Pname is name of a simple file or an unchanged directory. | |
256 | */ | |
257 | (void) (*todo)(pname, ino, LEAF); | |
258 | return; | |
259 | } | |
260 | /* | |
261 | * Pname is a dumped directory name. | |
262 | */ | |
263 | if ((*todo)(pname, ino, NODE) == FAIL) | |
264 | return; | |
265 | /* | |
266 | * begin search through the directory | |
267 | * skipping over "." and ".." | |
268 | */ | |
269 | (void) strncpy(locname, pname, MAXPATHLEN); | |
270 | (void) strncat(locname, "/", MAXPATHLEN); | |
271 | namelen = strlen(locname); | |
272 | rst_seekdir(dirp, itp->t_seekpt, itp->t_seekpt); | |
273 | dp = rst_readdir(dirp); /* "." */ | |
274 | if (dp != NULL && strcmp(dp->d_name, ".") == 0) | |
275 | dp = rst_readdir(dirp); /* ".." */ | |
276 | else | |
277 | fprintf(stderr, "Warning: `.' missing from directory %s\n", | |
278 | pname); | |
279 | if (dp != NULL && strcmp(dp->d_name, "..") == 0) | |
280 | dp = rst_readdir(dirp); /* first real entry */ | |
281 | else | |
282 | fprintf(stderr, "Warning: `..' missing from directory %s\n", | |
283 | pname); | |
284 | bpt = rst_telldir(dirp); | |
285 | /* | |
286 | * a zero inode signals end of directory | |
287 | */ | |
288 | while (dp != NULL) { | |
289 | locname[namelen] = '\0'; | |
290 | if (namelen + dp->d_namlen >= MAXPATHLEN) { | |
291 | fprintf(stderr, "%s%s: name exceeds %d char\n", | |
292 | locname, dp->d_name, MAXPATHLEN); | |
293 | } else { | |
294 | (void) strncat(locname, dp->d_name, (int)dp->d_namlen); | |
295 | treescan(locname, dp->d_ino, todo); | |
296 | rst_seekdir(dirp, bpt, itp->t_seekpt); | |
297 | } | |
298 | dp = rst_readdir(dirp); | |
299 | bpt = rst_telldir(dirp); | |
300 | } | |
301 | } | |
302 | ||
303 | /* | |
304 | * Lookup a pathname which is always assumed to start from the ROOTINO. | |
305 | */ | |
306 | struct direct * | |
307 | pathsearch(pathname) | |
308 | const char *pathname; | |
309 | { | |
310 | ino_t ino; | |
311 | struct direct *dp; | |
312 | char *path, *name, buffer[MAXPATHLEN]; | |
313 | ||
314 | strcpy(buffer, pathname); | |
315 | path = buffer; | |
316 | ino = ROOTINO; | |
317 | while (*path == '/') | |
318 | path++; | |
319 | dp = NULL; | |
320 | while ((name = strsep(&path, "/")) != NULL && *name /* != NULL */) { | |
321 | if ((dp = searchdir(ino, name)) == NULL) | |
322 | return (NULL); | |
323 | ino = dp->d_ino; | |
324 | } | |
325 | return (dp); | |
326 | } | |
327 | ||
328 | /* | |
329 | * Lookup the requested name in directory inum. | |
330 | * Return its inode number if found, zero if it does not exist. | |
331 | */ | |
332 | static struct direct * | |
333 | searchdir(inum, name) | |
334 | ino_t inum; | |
335 | char *name; | |
336 | { | |
337 | register struct direct *dp; | |
338 | register struct inotab *itp; | |
339 | int len; | |
340 | ||
341 | itp = inotablookup(inum); | |
342 | if (itp == NULL) | |
343 | return (NULL); | |
344 | rst_seekdir(dirp, itp->t_seekpt, itp->t_seekpt); | |
345 | len = strlen(name); | |
346 | do { | |
347 | dp = rst_readdir(dirp); | |
348 | if (dp == NULL) | |
349 | return (NULL); | |
350 | } while (dp->d_namlen != len || strncmp(dp->d_name, name, len) != 0); | |
351 | return (dp); | |
352 | } | |
353 | ||
354 | /* | |
355 | * Put the directory entries in the directory file | |
356 | */ | |
357 | static void | |
358 | putdir(buf, size) | |
359 | char *buf; | |
360 | long size; | |
361 | { | |
362 | struct direct cvtbuf; | |
363 | register struct odirect *odp; | |
364 | struct odirect *eodp; | |
365 | register struct direct *dp; | |
366 | long loc, i; | |
367 | ||
368 | if (cvtflag) { | |
369 | eodp = (struct odirect *)&buf[size]; | |
370 | for (odp = (struct odirect *)buf; odp < eodp; odp++) | |
371 | if (odp->d_ino != 0) { | |
372 | dcvt(odp, &cvtbuf); | |
373 | putent(&cvtbuf); | |
374 | } | |
375 | } else { | |
376 | for (loc = 0; loc < size; ) { | |
377 | dp = (struct direct *)(buf + loc); | |
378 | #ifdef DIRDEBUG | |
379 | printf ("reclen = %d, namlen = %d, type = %d\n", | |
380 | dp->d_reclen, dp->d_namlen, dp->d_type); | |
381 | #endif | |
382 | if (Bcvt) | |
383 | swabst((u_char *)"ls", (u_char *) dp); | |
384 | if (oldinofmt && dp->d_ino != 0) { | |
385 | #ifdef __linux__ | |
386 | if (Bcvt) | |
387 | swabst((u_char *)"s", (u_char *)&dp->d_namlen); | |
388 | #else | |
389 | # if BYTE_ORDER == BIG_ENDIAN | |
390 | if (Bcvt) | |
391 | dp->d_namlen = dp->d_type; | |
392 | # else | |
393 | if (!Bcvt) | |
394 | dp->d_namlen = dp->d_type; | |
395 | # endif | |
396 | #endif /* __linux__ */ | |
397 | dp->d_type = DT_UNKNOWN; | |
398 | } | |
399 | #ifdef __linux__ | |
400 | /* | |
401 | * Horrible hack to read FreeBSD 2.0 dumps | |
402 | */ | |
403 | if (!oldinofmt) | |
404 | swabst((u_char *)"6bs", (u_char *) dp); | |
405 | #endif /* __linux__ */ | |
406 | #ifdef DIRDEBUG | |
407 | printf ("reclen = %d, namlen = %d, type = %d\n", | |
408 | dp->d_reclen, dp->d_namlen, dp->d_type); | |
409 | #endif | |
410 | i = DIRBLKSIZ - (loc & (DIRBLKSIZ - 1)); | |
411 | if ((dp->d_reclen & 0x3) != 0 || | |
412 | dp->d_reclen > i || | |
413 | dp->d_reclen < DIRSIZ(0, dp) || | |
414 | dp->d_namlen > NAME_MAX) { | |
415 | vprintf(stdout, "Mangled directory: "); | |
416 | if ((dp->d_reclen & 0x3) != 0) | |
417 | vprintf(stdout, | |
418 | "reclen not multiple of 4 "); | |
419 | if (dp->d_reclen < DIRSIZ(0, dp)) | |
420 | vprintf(stdout, | |
421 | "reclen less than DIRSIZ (%d < %d) ", | |
422 | dp->d_reclen, DIRSIZ(0, dp)); | |
423 | if (dp->d_namlen > NAME_MAX) | |
424 | vprintf(stdout, | |
425 | "reclen name too big (%d > %d) ", | |
426 | dp->d_namlen, NAME_MAX); | |
427 | vprintf(stdout, "\n"); | |
428 | loc += i; | |
429 | continue; | |
430 | } | |
431 | loc += dp->d_reclen; | |
432 | if (dp->d_ino != 0) { | |
433 | putent(dp); | |
434 | } | |
435 | } | |
436 | } | |
437 | } | |
438 | ||
439 | /* | |
440 | * These variables are "local" to the following two functions. | |
441 | */ | |
442 | char dirbuf[DIRBLKSIZ]; | |
443 | long dirloc = 0; | |
444 | long prev = 0; | |
445 | ||
446 | /* | |
447 | * add a new directory entry to a file. | |
448 | */ | |
449 | static void | |
450 | putent(dp) | |
451 | struct direct *dp; | |
452 | { | |
453 | dp->d_reclen = DIRSIZ(0, dp); | |
454 | if (dirloc + dp->d_reclen > DIRBLKSIZ) { | |
455 | ((struct direct *)(dirbuf + prev))->d_reclen = | |
456 | DIRBLKSIZ - prev; | |
457 | (void) fwrite(dirbuf, 1, DIRBLKSIZ, df); | |
458 | dirloc = 0; | |
459 | } | |
460 | memmove(dirbuf + dirloc, dp, (long)dp->d_reclen); | |
461 | prev = dirloc; | |
462 | dirloc += dp->d_reclen; | |
463 | } | |
464 | ||
465 | /* | |
466 | * flush out a directory that is finished. | |
467 | */ | |
468 | static void | |
469 | flushent() | |
470 | { | |
471 | ((struct direct *)(dirbuf + prev))->d_reclen = DIRBLKSIZ - prev; | |
472 | (void) fwrite(dirbuf, (int)dirloc, 1, df); | |
473 | seekpt = ftell(df); | |
474 | dirloc = 0; | |
475 | } | |
476 | ||
477 | static void | |
478 | dcvt(odp, ndp) | |
479 | register struct odirect *odp; | |
480 | register struct direct *ndp; | |
481 | { | |
482 | ||
483 | memset(ndp, 0, (long)(sizeof *ndp)); | |
484 | ndp->d_ino = odp->d_ino; | |
485 | #ifdef __linux__ | |
486 | ndp->d_type = DT_UNKNOWN; | |
487 | #endif | |
488 | (void) strncpy(ndp->d_name, odp->d_name, ODIRSIZ); | |
489 | ndp->d_namlen = strlen(ndp->d_name); | |
490 | ndp->d_reclen = DIRSIZ(0, ndp); | |
491 | } | |
492 | ||
493 | /* | |
494 | * Seek to an entry in a directory. | |
495 | * Only values returned by rst_telldir should be passed to rst_seekdir. | |
496 | * This routine handles many directories in a single file. | |
497 | * It takes the base of the directory in the file, plus | |
498 | * the desired seek offset into it. | |
499 | */ | |
500 | static void | |
501 | rst_seekdir(dirp, loc, base) | |
502 | register RST_DIR *dirp; | |
503 | long loc, base; | |
504 | { | |
505 | ||
506 | if (loc == rst_telldir(dirp)) | |
507 | return; | |
508 | loc -= base; | |
509 | if (loc < 0) | |
510 | fprintf(stderr, "bad seek pointer to rst_seekdir %d\n", loc); | |
511 | (void) lseek(dirp->dd_fd, base + (loc & ~(DIRBLKSIZ - 1)), SEEK_SET); | |
512 | dirp->dd_loc = loc & (DIRBLKSIZ - 1); | |
513 | if (dirp->dd_loc != 0) | |
514 | dirp->dd_size = read(dirp->dd_fd, dirp->dd_buf, DIRBLKSIZ); | |
515 | } | |
516 | ||
517 | /* | |
518 | * get next entry in a directory. | |
519 | */ | |
520 | struct direct * | |
521 | rst_readdir(dirp) | |
522 | register RST_DIR *dirp; | |
523 | { | |
524 | register struct direct *dp; | |
525 | ||
526 | for (;;) { | |
527 | if (dirp->dd_loc == 0) { | |
528 | dirp->dd_size = read(dirp->dd_fd, dirp->dd_buf, | |
529 | DIRBLKSIZ); | |
530 | if (dirp->dd_size <= 0) { | |
531 | dprintf(stderr, "error reading directory\n"); | |
532 | return (NULL); | |
533 | } | |
534 | } | |
535 | if (dirp->dd_loc >= dirp->dd_size) { | |
536 | dirp->dd_loc = 0; | |
537 | continue; | |
538 | } | |
539 | dp = (struct direct *)(dirp->dd_buf + dirp->dd_loc); | |
540 | if (dp->d_reclen == 0 || | |
541 | dp->d_reclen > DIRBLKSIZ + 1 - dirp->dd_loc) { | |
542 | dprintf(stderr, "corrupted directory: bad reclen %d\n" | |
543 | "dd_loc = %d, dd_size = %d\n", | |
544 | dp->d_reclen, dirp->dd_loc, dirp->dd_size); | |
545 | return (NULL); | |
546 | } | |
547 | dirp->dd_loc += dp->d_reclen; | |
548 | if (dp->d_ino == 0 && strcmp(dp->d_name, "/") == 0) | |
549 | return (NULL); | |
550 | if (dp->d_ino >= maxino) { | |
551 | dprintf(stderr, "corrupted directory: bad inum %d\n", | |
552 | dp->d_ino); | |
553 | continue; | |
554 | } | |
555 | return (dp); | |
556 | } | |
557 | } | |
558 | ||
559 | /* | |
560 | * Simulate the opening of a directory | |
561 | */ | |
562 | RST_DIR * | |
563 | rst_opendir(name) | |
564 | const char *name; | |
565 | { | |
566 | struct inotab *itp; | |
567 | RST_DIR *dirp; | |
568 | ino_t ino; | |
569 | ||
570 | if ((ino = dirlookup(name)) > 0 && | |
571 | (itp = inotablookup(ino)) != NULL) { | |
572 | dirp = opendirfile(dirfile); | |
573 | rst_seekdir(dirp, itp->t_seekpt, itp->t_seekpt); | |
574 | return (dirp); | |
575 | } | |
576 | return (NULL); | |
577 | } | |
578 | ||
579 | /* | |
580 | * In our case, there is nothing to do when closing a directory. | |
581 | */ | |
582 | void | |
583 | rst_closedir(dirp) | |
584 | RST_DIR *dirp; | |
585 | { | |
586 | ||
587 | (void)close(dirp->dd_fd); | |
588 | free(dirp); | |
589 | return; | |
590 | } | |
591 | ||
592 | /* | |
593 | * Simulate finding the current offset in the directory. | |
594 | */ | |
595 | static long | |
596 | rst_telldir(dirp) | |
597 | RST_DIR *dirp; | |
598 | { | |
599 | return ((long)lseek(dirp->dd_fd, | |
600 | (off_t)0, SEEK_CUR) - dirp->dd_size + dirp->dd_loc); | |
601 | } | |
602 | ||
603 | /* | |
604 | * Open a directory file. | |
605 | */ | |
606 | static RST_DIR * | |
607 | opendirfile(name) | |
608 | const char *name; | |
609 | { | |
610 | register RST_DIR *dirp; | |
611 | register int fd; | |
612 | ||
613 | if ((fd = open(name, O_RDONLY)) == -1) | |
614 | return (NULL); | |
615 | if ((dirp = malloc(sizeof(RST_DIR))) == NULL) { | |
616 | (void)close(fd); | |
617 | return (NULL); | |
618 | } | |
619 | dirp->dd_fd = fd; | |
620 | dirp->dd_loc = 0; | |
621 | return (dirp); | |
622 | } | |
623 | ||
624 | /* | |
625 | * Set the mode, owner, and times for all new or changed directories | |
626 | */ | |
627 | void | |
628 | setdirmodes(flags) | |
629 | int flags; | |
630 | { | |
631 | FILE *mf; | |
632 | struct modeinfo node; | |
633 | struct entry *ep; | |
634 | char *cp; | |
635 | ||
636 | vprintf(stdout, "Set directory mode, owner, and times.\n"); | |
637 | (void) sprintf(modefile, "%s/rstmode%d", tmpdir, dumpdate); | |
638 | mf = fopen(modefile, "r"); | |
639 | if (mf == NULL) { | |
640 | fprintf(stderr, "fopen: %s\n", strerror(errno)); | |
641 | fprintf(stderr, "cannot open mode file %s\n", modefile); | |
642 | fprintf(stderr, "directory mode, owner, and times not set\n"); | |
643 | return; | |
644 | } | |
645 | clearerr(mf); | |
646 | for (;;) { | |
647 | (void) fread((char *)&node, 1, sizeof(struct modeinfo), mf); | |
648 | if (feof(mf)) | |
649 | break; | |
650 | ep = lookupino(node.ino); | |
651 | if (command == 'i' || command == 'x') { | |
652 | if (ep == NULL) | |
653 | continue; | |
654 | if ((flags & FORCE) == 0 && ep->e_flags & EXISTED) { | |
655 | ep->e_flags &= ~NEW; | |
656 | continue; | |
657 | } | |
658 | if (node.ino == ROOTINO && | |
659 | reply("set owner/mode for '.'") == FAIL) | |
660 | continue; | |
661 | } | |
662 | if (ep == NULL) { | |
663 | panic("cannot find directory inode %d\n", node.ino); | |
664 | } else { | |
665 | cp = myname(ep); | |
666 | (void) chown(cp, node.uid, node.gid); | |
667 | (void) chmod(cp, node.mode); | |
668 | #ifdef __linux__ | |
669 | (void) setflags(cp, node.flags); | |
670 | #else | |
671 | (void) chflags(cp, node.flags); | |
672 | #endif | |
673 | utimes(cp, node.timep); | |
674 | ep->e_flags &= ~NEW; | |
675 | } | |
676 | } | |
677 | if (ferror(mf)) | |
678 | panic("error setting directory modes\n"); | |
679 | (void) fclose(mf); | |
680 | } | |
681 | ||
682 | /* | |
683 | * Generate a literal copy of a directory. | |
684 | */ | |
685 | int | |
686 | genliteraldir(name, ino) | |
687 | char *name; | |
688 | ino_t ino; | |
689 | { | |
690 | register struct inotab *itp; | |
691 | int ofile, dp, i, size; | |
692 | char buf[BUFSIZ]; | |
693 | ||
694 | itp = inotablookup(ino); | |
695 | if (itp == NULL) | |
696 | panic("Cannot find directory inode %d named %s\n", ino, name); | |
697 | if ((ofile = open(name, O_WRONLY | O_CREAT | O_TRUNC, 0666)) < 0) { | |
698 | fprintf(stderr, "%s: ", name); | |
699 | (void) fflush(stderr); | |
700 | fprintf(stderr, "cannot create file: %s\n", strerror(errno)); | |
701 | return (FAIL); | |
702 | } | |
703 | rst_seekdir(dirp, itp->t_seekpt, itp->t_seekpt); | |
704 | dp = dup(dirp->dd_fd); | |
705 | for (i = itp->t_size; i > 0; i -= BUFSIZ) { | |
706 | size = i < BUFSIZ ? i : BUFSIZ; | |
707 | if (read(dp, buf, (int) size) == -1) { | |
708 | fprintf(stderr, | |
709 | "write error extracting inode %d, name %s\n", | |
710 | curfile.ino, curfile.name); | |
711 | fprintf(stderr, "read: %s\n", strerror(errno)); | |
712 | done(1); | |
713 | } | |
714 | if (!Nflag && write(ofile, buf, (int) size) == -1) { | |
715 | fprintf(stderr, | |
716 | "write error extracting inode %d, name %s\n", | |
717 | curfile.ino, curfile.name); | |
718 | fprintf(stderr, "write: %s\n", strerror(errno)); | |
719 | done(1); | |
720 | } | |
721 | } | |
722 | (void) close(dp); | |
723 | (void) close(ofile); | |
724 | return (GOOD); | |
725 | } | |
726 | ||
727 | /* | |
728 | * Determine the type of an inode | |
729 | */ | |
730 | int | |
731 | inodetype(ino) | |
732 | ino_t ino; | |
733 | { | |
734 | struct inotab *itp; | |
735 | ||
736 | itp = inotablookup(ino); | |
737 | if (itp == NULL) | |
738 | return (LEAF); | |
739 | return (NODE); | |
740 | } | |
741 | ||
742 | /* | |
743 | * Allocate and initialize a directory inode entry. | |
744 | * If requested, save its pertinent mode, owner, and time info. | |
745 | */ | |
746 | static struct inotab * | |
747 | allocinotab(ino, dip, seekpt) | |
748 | ino_t ino; | |
749 | #ifdef __linux__ | |
750 | struct new_bsd_inode *dip; | |
751 | #else | |
752 | struct dinode *dip; | |
753 | #endif | |
754 | long seekpt; | |
755 | { | |
756 | register struct inotab *itp; | |
757 | struct modeinfo node; | |
758 | ||
759 | itp = calloc(1, sizeof(struct inotab)); | |
760 | if (itp == NULL) | |
761 | panic("no memory directory table\n"); | |
762 | itp->t_next = inotab[INOHASH(ino)]; | |
763 | inotab[INOHASH(ino)] = itp; | |
764 | itp->t_ino = ino; | |
765 | itp->t_seekpt = seekpt; | |
766 | if (mf == NULL) | |
767 | return (itp); | |
768 | node.ino = ino; | |
769 | #ifdef __linux__ | |
770 | node.timep[0].tv_sec = dip->di_atime.tv_sec; | |
771 | node.timep[0].tv_usec = dip->di_atime.tv_usec; | |
772 | node.timep[1].tv_sec = dip->di_mtime.tv_sec; | |
773 | node.timep[1].tv_usec = dip->di_mtime.tv_usec; | |
774 | #else /* __linux__ */ | |
775 | node.timep[0].tv_sec = dip->di_atime; | |
776 | node.timep[0].tv_usec = dip->di_atimensec / 1000; | |
777 | node.timep[1].tv_sec = dip->di_mtime; | |
778 | node.timep[1].tv_usec = dip->di_mtimensec / 1000; | |
779 | #endif /* __linux__ */ | |
780 | node.mode = dip->di_mode; | |
781 | node.flags = dip->di_flags; | |
782 | node.uid = dip->di_uid; | |
783 | node.gid = dip->di_gid; | |
784 | (void) fwrite((char *)&node, 1, sizeof(struct modeinfo), mf); | |
785 | return (itp); | |
786 | } | |
787 | ||
788 | /* | |
789 | * Look up an inode in the table of directories | |
790 | */ | |
791 | static struct inotab * | |
792 | inotablookup(ino) | |
793 | ino_t ino; | |
794 | { | |
795 | register struct inotab *itp; | |
796 | ||
797 | for (itp = inotab[INOHASH(ino)]; itp != NULL; itp = itp->t_next) | |
798 | if (itp->t_ino == ino) | |
799 | return (itp); | |
800 | return (NULL); | |
801 | } | |
802 | ||
803 | /* | |
804 | * Clean up and exit | |
805 | */ | |
806 | __dead void | |
807 | done(exitcode) | |
808 | int exitcode; | |
809 | { | |
810 | ||
811 | closemt(); | |
812 | if (modefile[0] != '#') | |
813 | (void) unlink(modefile); | |
814 | if (dirfile[0] != '#') | |
815 | (void) unlink(dirfile); | |
816 | exit(exitcode); | |
817 | } |