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Commit | Line | Data |
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1227625a SP |
1 | /* |
2 | * Ported to Linux's Second Extended File System as part of the | |
3 | * dump and restore backup suit | |
b45f51d6 SP |
4 | * Remy Card <card@Linux.EU.Org>, 1994-1997 |
5 | * Stelian Pop <pop@cybercable.fr>, 1999 | |
1227625a SP |
6 | * |
7 | */ | |
8 | ||
9 | /* | |
10 | * Copyright (c) 1983, 1993 | |
11 | * The Regents of the University of California. All rights reserved. | |
12 | * (c) UNIX System Laboratories, Inc. | |
13 | * All or some portions of this file are derived from material licensed | |
14 | * to the University of California by American Telephone and Telegraph | |
15 | * Co. or Unix System Laboratories, Inc. and are reproduced herein with | |
16 | * the permission of UNIX System Laboratories, Inc. | |
17 | * | |
18 | * Redistribution and use in source and binary forms, with or without | |
19 | * modification, are permitted provided that the following conditions | |
20 | * are met: | |
21 | * 1. Redistributions of source code must retain the above copyright | |
22 | * notice, this list of conditions and the following disclaimer. | |
23 | * 2. Redistributions in binary form must reproduce the above copyright | |
24 | * notice, this list of conditions and the following disclaimer in the | |
25 | * documentation and/or other materials provided with the distribution. | |
26 | * 3. All advertising materials mentioning features or use of this software | |
27 | * must display the following acknowledgement: | |
28 | * This product includes software developed by the University of | |
29 | * California, Berkeley and its contributors. | |
30 | * 4. Neither the name of the University nor the names of its contributors | |
31 | * may be used to endorse or promote products derived from this software | |
32 | * without specific prior written permission. | |
33 | * | |
34 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
35 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
36 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
37 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
38 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
39 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
40 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
41 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
42 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
43 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
44 | * SUCH DAMAGE. | |
45 | */ | |
46 | ||
47 | #ifndef lint | |
b45f51d6 | 48 | #if 0 |
1227625a | 49 | static char sccsid[] = "@(#)dirs.c 8.7 (Berkeley) 5/1/95"; |
b45f51d6 SP |
50 | #endif |
51 | static const char rcsid[] = | |
8d4197bb | 52 | "$Id: dirs.c,v 1.4 1999/10/11 13:08:08 stelian Exp $"; |
1227625a SP |
53 | #endif /* not lint */ |
54 | ||
55 | #include <sys/param.h> | |
56 | #include <sys/file.h> | |
57 | #include <sys/stat.h> | |
1227625a SP |
58 | |
59 | #ifdef __linux__ | |
60 | #include <linux/ext2_fs.h> | |
61 | #include <bsdcompat.h> | |
62 | #else /* __linux__ */ | |
63 | #include <ufs/ufs/dinode.h> | |
64 | #include <ufs/ufs/dir.h> | |
1227625a SP |
65 | #endif /* __linux__ */ |
66 | #include <protocols/dumprestore.h> | |
67 | ||
ddd2ef55 | 68 | #include <compaterr.h> |
1227625a SP |
69 | #include <errno.h> |
70 | #include <stdio.h> | |
71 | #include <stdlib.h> | |
72 | #include <string.h> | |
73 | #include <unistd.h> | |
74 | ||
75 | #ifdef __linux__ | |
76 | #include <endian.h> | |
77 | #else | |
78 | #include <machine/endian.h> | |
79 | #endif | |
80 | ||
81 | #include "pathnames.h" | |
82 | #include "restore.h" | |
83 | #include "extern.h" | |
84 | ||
85 | /* | |
86 | * Symbol table of directories read from tape. | |
87 | */ | |
88 | #define HASHSIZE 1000 | |
89 | #define INOHASH(val) (val % HASHSIZE) | |
90 | struct inotab { | |
91 | struct inotab *t_next; | |
92 | ino_t t_ino; | |
b45f51d6 SP |
93 | int32_t t_seekpt; |
94 | int32_t t_size; | |
1227625a SP |
95 | }; |
96 | static struct inotab *inotab[HASHSIZE]; | |
97 | ||
98 | /* | |
99 | * Information retained about directories. | |
100 | */ | |
101 | struct modeinfo { | |
102 | ino_t ino; | |
103 | struct timeval timep[2]; | |
104 | mode_t mode; | |
105 | uid_t uid; | |
106 | gid_t gid; | |
ddd2ef55 | 107 | unsigned int flags; |
1227625a SP |
108 | }; |
109 | ||
110 | /* | |
111 | * Definitions for library routines operating on directories. | |
112 | */ | |
113 | #undef DIRBLKSIZ | |
114 | #define DIRBLKSIZ 1024 | |
115 | struct rstdirdesc { | |
116 | int dd_fd; | |
b45f51d6 SP |
117 | int32_t dd_loc; |
118 | int32_t dd_size; | |
1227625a SP |
119 | char dd_buf[DIRBLKSIZ]; |
120 | }; | |
121 | ||
122 | /* | |
123 | * Global variables for this file. | |
124 | */ | |
125 | static long seekpt; | |
126 | static FILE *df, *mf; | |
127 | static RST_DIR *dirp; | |
b45f51d6 SP |
128 | static char dirfile[MAXPATHLEN] = "#"; /* No file */ |
129 | static char modefile[MAXPATHLEN] = "#"; /* No file */ | |
130 | static char dot[2] = "."; /* So it can be modified */ | |
1227625a SP |
131 | |
132 | /* | |
133 | * Format of old style directories. | |
134 | */ | |
135 | #define ODIRSIZ 14 | |
136 | struct odirect { | |
137 | u_short d_ino; | |
138 | char d_name[ODIRSIZ]; | |
139 | }; | |
140 | ||
141 | #ifdef __linux__ | |
142 | static struct inotab *allocinotab __P((ino_t, struct new_bsd_inode *, long)); | |
143 | #else | |
144 | static struct inotab *allocinotab __P((ino_t, struct dinode *, long)); | |
145 | #endif | |
146 | static void dcvt __P((struct odirect *, struct direct *)); | |
147 | static void flushent __P((void)); | |
148 | static struct inotab *inotablookup __P((ino_t)); | |
149 | static RST_DIR *opendirfile __P((const char *)); | |
ddd2ef55 | 150 | static void putdir __P((char *, size_t)); |
1227625a SP |
151 | static void putent __P((struct direct *)); |
152 | static void rst_seekdir __P((RST_DIR *, long, long)); | |
153 | static long rst_telldir __P((RST_DIR *)); | |
154 | static struct direct *searchdir __P((ino_t, char *)); | |
155 | ||
156 | /* | |
157 | * Extract directory contents, building up a directory structure | |
158 | * on disk for extraction by name. | |
159 | * If genmode is requested, save mode, owner, and times for all | |
160 | * directories on the tape. | |
161 | */ | |
162 | void | |
ddd2ef55 | 163 | extractdirs(int genmode) |
1227625a SP |
164 | { |
165 | register int i; | |
166 | #ifdef __linux__ | |
167 | register struct new_bsd_inode *ip; | |
168 | #else | |
169 | register struct dinode *ip; | |
170 | #endif | |
171 | struct inotab *itp; | |
172 | struct direct nulldir; | |
b45f51d6 | 173 | int fd; |
1227625a | 174 | |
ddd2ef55 SP |
175 | Vprintf(stdout, "Extract directories from tape\n"); |
176 | (void) snprintf(dirfile, sizeof(dirfile), "%s/rstdir%ld", tmpdir, | |
177 | (long)dumpdate); | |
b45f51d6 | 178 | if (command != 'r' && command != 'R') { |
ddd2ef55 SP |
179 | (void) strncat(dirfile, "-XXXXXX", |
180 | sizeof(dirfile) - strlen(dirfile)); | |
b45f51d6 SP |
181 | fd = mkstemp(dirfile); |
182 | } else | |
183 | fd = open(dirfile, O_RDWR|O_CREAT|O_EXCL, 0666); | |
184 | if (fd == -1 || (df = fdopen(fd, "w")) == NULL) { | |
185 | if (fd != -1) | |
186 | close(fd); | |
ddd2ef55 | 187 | err(1, "cannot create directory temporary %s", dirfile); |
1227625a SP |
188 | } |
189 | if (genmode != 0) { | |
ddd2ef55 | 190 | (void) snprintf(modefile, sizeof(modefile), "%s/rstmode%ld", tmpdir, (long)dumpdate); |
b45f51d6 | 191 | if (command != 'r' && command != 'R') { |
ddd2ef55 SP |
192 | (void) strncat(modefile, "-XXXXXX", |
193 | sizeof(modefile) - strlen(modefile)); | |
b45f51d6 SP |
194 | fd = mkstemp(modefile); |
195 | } else | |
196 | fd = open(modefile, O_RDWR|O_CREAT|O_EXCL, 0666); | |
197 | if (fd == -1 || (mf = fdopen(fd, "w")) == NULL) { | |
198 | if (fd != -1) | |
199 | close(fd); | |
ddd2ef55 | 200 | err(1, "cannot create modefile %s", modefile); |
1227625a SP |
201 | } |
202 | } | |
203 | nulldir.d_ino = 0; | |
1227625a | 204 | nulldir.d_type = DT_DIR; |
1227625a | 205 | nulldir.d_namlen = 1; |
ddd2ef55 SP |
206 | nulldir.d_name[0] = '/'; |
207 | nulldir.d_name[1] = '\0'; | |
1227625a SP |
208 | nulldir.d_reclen = DIRSIZ(0, &nulldir); |
209 | for (;;) { | |
210 | curfile.name = "<directory file - name unknown>"; | |
211 | curfile.action = USING; | |
212 | ip = curfile.dip; | |
213 | if (ip == NULL || (ip->di_mode & IFMT) != IFDIR) { | |
214 | (void) fclose(df); | |
215 | dirp = opendirfile(dirfile); | |
216 | if (dirp == NULL) | |
ddd2ef55 | 217 | warn("opendirfile"); |
1227625a SP |
218 | if (mf != NULL) |
219 | (void) fclose(mf); | |
220 | i = dirlookup(dot); | |
221 | if (i == 0) | |
222 | panic("Root directory is not on tape\n"); | |
223 | return; | |
224 | } | |
225 | itp = allocinotab(curfile.ino, ip, seekpt); | |
226 | getfile(putdir, xtrnull); | |
227 | putent(&nulldir); | |
228 | flushent(); | |
229 | itp->t_size = seekpt - itp->t_seekpt; | |
230 | } | |
231 | } | |
232 | ||
233 | /* | |
234 | * skip over all the directories on the tape | |
235 | */ | |
236 | void | |
ddd2ef55 | 237 | skipdirs(void) |
1227625a SP |
238 | { |
239 | ||
240 | while (curfile.dip && (curfile.dip->di_mode & IFMT) == IFDIR) { | |
241 | skipfile(); | |
242 | } | |
243 | } | |
244 | ||
245 | /* | |
b45f51d6 | 246 | * Recursively find names and inumbers of all files in subtree |
1227625a SP |
247 | * pname and pass them off to be processed. |
248 | */ | |
249 | void | |
ddd2ef55 | 250 | treescan(char *pname, ino_t ino, long (*todo) __P((char *, ino_t, int))) |
1227625a SP |
251 | { |
252 | register struct inotab *itp; | |
253 | register struct direct *dp; | |
254 | int namelen; | |
255 | long bpt; | |
256 | char locname[MAXPATHLEN + 1]; | |
257 | ||
258 | itp = inotablookup(ino); | |
259 | if (itp == NULL) { | |
260 | /* | |
261 | * Pname is name of a simple file or an unchanged directory. | |
262 | */ | |
263 | (void) (*todo)(pname, ino, LEAF); | |
264 | return; | |
265 | } | |
266 | /* | |
267 | * Pname is a dumped directory name. | |
268 | */ | |
269 | if ((*todo)(pname, ino, NODE) == FAIL) | |
270 | return; | |
271 | /* | |
272 | * begin search through the directory | |
273 | * skipping over "." and ".." | |
274 | */ | |
ddd2ef55 SP |
275 | namelen = snprintf(locname, sizeof(locname), "%s/", pname); |
276 | if (namelen >= sizeof(locname)) | |
277 | namelen = sizeof(locname) - 1; | |
1227625a SP |
278 | rst_seekdir(dirp, itp->t_seekpt, itp->t_seekpt); |
279 | dp = rst_readdir(dirp); /* "." */ | |
280 | if (dp != NULL && strcmp(dp->d_name, ".") == 0) | |
281 | dp = rst_readdir(dirp); /* ".." */ | |
282 | else | |
283 | fprintf(stderr, "Warning: `.' missing from directory %s\n", | |
284 | pname); | |
285 | if (dp != NULL && strcmp(dp->d_name, "..") == 0) | |
286 | dp = rst_readdir(dirp); /* first real entry */ | |
287 | else | |
288 | fprintf(stderr, "Warning: `..' missing from directory %s\n", | |
289 | pname); | |
290 | bpt = rst_telldir(dirp); | |
291 | /* | |
292 | * a zero inode signals end of directory | |
293 | */ | |
294 | while (dp != NULL) { | |
295 | locname[namelen] = '\0'; | |
b45f51d6 | 296 | if (namelen + dp->d_namlen >= sizeof(locname)) { |
ddd2ef55 SP |
297 | fprintf(stderr, "%s%s: name exceeds %ld char\n", |
298 | locname, dp->d_name, (long)sizeof(locname) - 1); | |
1227625a SP |
299 | } else { |
300 | (void) strncat(locname, dp->d_name, (int)dp->d_namlen); | |
301 | treescan(locname, dp->d_ino, todo); | |
302 | rst_seekdir(dirp, bpt, itp->t_seekpt); | |
303 | } | |
304 | dp = rst_readdir(dirp); | |
305 | bpt = rst_telldir(dirp); | |
306 | } | |
307 | } | |
308 | ||
309 | /* | |
310 | * Lookup a pathname which is always assumed to start from the ROOTINO. | |
311 | */ | |
312 | struct direct * | |
ddd2ef55 | 313 | pathsearch(const char *pathname) |
1227625a SP |
314 | { |
315 | ino_t ino; | |
316 | struct direct *dp; | |
317 | char *path, *name, buffer[MAXPATHLEN]; | |
318 | ||
319 | strcpy(buffer, pathname); | |
320 | path = buffer; | |
321 | ino = ROOTINO; | |
322 | while (*path == '/') | |
323 | path++; | |
324 | dp = NULL; | |
ddd2ef55 | 325 | while ((name = strsep(&path, "/")) != NULL && *name /* != NULL */) { |
1227625a SP |
326 | if ((dp = searchdir(ino, name)) == NULL) |
327 | return (NULL); | |
328 | ino = dp->d_ino; | |
329 | } | |
330 | return (dp); | |
331 | } | |
332 | ||
333 | /* | |
334 | * Lookup the requested name in directory inum. | |
335 | * Return its inode number if found, zero if it does not exist. | |
336 | */ | |
337 | static struct direct * | |
ddd2ef55 | 338 | searchdir(ino_t inum, char *name) |
1227625a SP |
339 | { |
340 | register struct direct *dp; | |
341 | register struct inotab *itp; | |
342 | int len; | |
343 | ||
344 | itp = inotablookup(inum); | |
345 | if (itp == NULL) | |
346 | return (NULL); | |
347 | rst_seekdir(dirp, itp->t_seekpt, itp->t_seekpt); | |
348 | len = strlen(name); | |
349 | do { | |
350 | dp = rst_readdir(dirp); | |
351 | if (dp == NULL) | |
352 | return (NULL); | |
353 | } while (dp->d_namlen != len || strncmp(dp->d_name, name, len) != 0); | |
354 | return (dp); | |
355 | } | |
356 | ||
357 | /* | |
358 | * Put the directory entries in the directory file | |
359 | */ | |
360 | static void | |
ddd2ef55 | 361 | putdir(char *buf, size_t size) |
1227625a SP |
362 | { |
363 | struct direct cvtbuf; | |
364 | register struct odirect *odp; | |
365 | struct odirect *eodp; | |
366 | register struct direct *dp; | |
367 | long loc, i; | |
368 | ||
369 | if (cvtflag) { | |
370 | eodp = (struct odirect *)&buf[size]; | |
371 | for (odp = (struct odirect *)buf; odp < eodp; odp++) | |
372 | if (odp->d_ino != 0) { | |
373 | dcvt(odp, &cvtbuf); | |
374 | putent(&cvtbuf); | |
375 | } | |
376 | } else { | |
377 | for (loc = 0; loc < size; ) { | |
378 | dp = (struct direct *)(buf + loc); | |
379 | #ifdef DIRDEBUG | |
380 | printf ("reclen = %d, namlen = %d, type = %d\n", | |
381 | dp->d_reclen, dp->d_namlen, dp->d_type); | |
382 | #endif | |
383 | if (Bcvt) | |
ddd2ef55 | 384 | swabst((u_char *)"is", (u_char *) dp); |
1227625a SP |
385 | if (oldinofmt && dp->d_ino != 0) { |
386 | #ifdef __linux__ | |
387 | if (Bcvt) | |
388 | swabst((u_char *)"s", (u_char *)&dp->d_namlen); | |
389 | #else | |
390 | # if BYTE_ORDER == BIG_ENDIAN | |
391 | if (Bcvt) | |
392 | dp->d_namlen = dp->d_type; | |
393 | # else | |
394 | if (!Bcvt) | |
395 | dp->d_namlen = dp->d_type; | |
396 | # endif | |
397 | #endif /* __linux__ */ | |
398 | dp->d_type = DT_UNKNOWN; | |
399 | } | |
400 | #ifdef __linux__ | |
401 | /* | |
402 | * Horrible hack to read FreeBSD 2.0 dumps | |
403 | */ | |
404 | if (!oldinofmt) | |
405 | swabst((u_char *)"6bs", (u_char *) dp); | |
406 | #endif /* __linux__ */ | |
407 | #ifdef DIRDEBUG | |
408 | printf ("reclen = %d, namlen = %d, type = %d\n", | |
409 | dp->d_reclen, dp->d_namlen, dp->d_type); | |
410 | #endif | |
411 | i = DIRBLKSIZ - (loc & (DIRBLKSIZ - 1)); | |
412 | if ((dp->d_reclen & 0x3) != 0 || | |
413 | dp->d_reclen > i || | |
414 | dp->d_reclen < DIRSIZ(0, dp) || | |
415 | dp->d_namlen > NAME_MAX) { | |
ddd2ef55 | 416 | Vprintf(stdout, "Mangled directory: "); |
1227625a | 417 | if ((dp->d_reclen & 0x3) != 0) |
ddd2ef55 | 418 | Vprintf(stdout, |
1227625a SP |
419 | "reclen not multiple of 4 "); |
420 | if (dp->d_reclen < DIRSIZ(0, dp)) | |
ddd2ef55 | 421 | Vprintf(stdout, |
1227625a SP |
422 | "reclen less than DIRSIZ (%d < %d) ", |
423 | dp->d_reclen, DIRSIZ(0, dp)); | |
424 | if (dp->d_namlen > NAME_MAX) | |
ddd2ef55 | 425 | Vprintf(stdout, |
1227625a SP |
426 | "reclen name too big (%d > %d) ", |
427 | dp->d_namlen, NAME_MAX); | |
ddd2ef55 | 428 | Vprintf(stdout, "\n"); |
1227625a SP |
429 | loc += i; |
430 | continue; | |
431 | } | |
432 | loc += dp->d_reclen; | |
433 | if (dp->d_ino != 0) { | |
434 | putent(dp); | |
435 | } | |
436 | } | |
437 | } | |
438 | } | |
439 | ||
440 | /* | |
441 | * These variables are "local" to the following two functions. | |
442 | */ | |
443 | char dirbuf[DIRBLKSIZ]; | |
444 | long dirloc = 0; | |
445 | long prev = 0; | |
446 | ||
447 | /* | |
448 | * add a new directory entry to a file. | |
449 | */ | |
450 | static void | |
ddd2ef55 | 451 | putent(struct direct *dp) |
1227625a SP |
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 | } | |
ddd2ef55 | 460 | memmove(dirbuf + dirloc, dp, (size_t)dp->d_reclen); |
1227625a SP |
461 | prev = dirloc; |
462 | dirloc += dp->d_reclen; | |
463 | } | |
464 | ||
465 | /* | |
466 | * flush out a directory that is finished. | |
467 | */ | |
468 | static void | |
ddd2ef55 | 469 | flushent(void) |
1227625a SP |
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 | |
ddd2ef55 | 478 | dcvt(struct odirect *odp, struct direct *ndp) |
1227625a SP |
479 | { |
480 | ||
ddd2ef55 | 481 | memset(ndp, 0, (size_t)(sizeof *ndp)); |
1227625a | 482 | ndp->d_ino = odp->d_ino; |
1227625a | 483 | ndp->d_type = DT_UNKNOWN; |
1227625a SP |
484 | (void) strncpy(ndp->d_name, odp->d_name, ODIRSIZ); |
485 | ndp->d_namlen = strlen(ndp->d_name); | |
486 | ndp->d_reclen = DIRSIZ(0, ndp); | |
487 | } | |
488 | ||
489 | /* | |
490 | * Seek to an entry in a directory. | |
491 | * Only values returned by rst_telldir should be passed to rst_seekdir. | |
492 | * This routine handles many directories in a single file. | |
493 | * It takes the base of the directory in the file, plus | |
494 | * the desired seek offset into it. | |
495 | */ | |
496 | static void | |
ddd2ef55 | 497 | rst_seekdir(RST_DIR *dirp, long loc, long base) |
1227625a SP |
498 | { |
499 | ||
500 | if (loc == rst_telldir(dirp)) | |
501 | return; | |
502 | loc -= base; | |
503 | if (loc < 0) | |
b45f51d6 | 504 | fprintf(stderr, "bad seek pointer to rst_seekdir %ld\n", loc); |
1227625a SP |
505 | (void) lseek(dirp->dd_fd, base + (loc & ~(DIRBLKSIZ - 1)), SEEK_SET); |
506 | dirp->dd_loc = loc & (DIRBLKSIZ - 1); | |
507 | if (dirp->dd_loc != 0) | |
508 | dirp->dd_size = read(dirp->dd_fd, dirp->dd_buf, DIRBLKSIZ); | |
509 | } | |
510 | ||
511 | /* | |
512 | * get next entry in a directory. | |
513 | */ | |
514 | struct direct * | |
ddd2ef55 | 515 | rst_readdir(RST_DIR *dirp) |
1227625a SP |
516 | { |
517 | register struct direct *dp; | |
518 | ||
519 | for (;;) { | |
520 | if (dirp->dd_loc == 0) { | |
b45f51d6 | 521 | dirp->dd_size = read(dirp->dd_fd, dirp->dd_buf, |
1227625a SP |
522 | DIRBLKSIZ); |
523 | if (dirp->dd_size <= 0) { | |
ddd2ef55 | 524 | Dprintf(stderr, "error reading directory\n"); |
1227625a SP |
525 | return (NULL); |
526 | } | |
527 | } | |
528 | if (dirp->dd_loc >= dirp->dd_size) { | |
529 | dirp->dd_loc = 0; | |
530 | continue; | |
531 | } | |
532 | dp = (struct direct *)(dirp->dd_buf + dirp->dd_loc); | |
533 | if (dp->d_reclen == 0 || | |
534 | dp->d_reclen > DIRBLKSIZ + 1 - dirp->dd_loc) { | |
ddd2ef55 | 535 | Dprintf(stderr, "corrupted directory: bad reclen %d\n", |
b45f51d6 | 536 | dp->d_reclen); |
1227625a SP |
537 | return (NULL); |
538 | } | |
539 | dirp->dd_loc += dp->d_reclen; | |
540 | if (dp->d_ino == 0 && strcmp(dp->d_name, "/") == 0) | |
541 | return (NULL); | |
542 | if (dp->d_ino >= maxino) { | |
ddd2ef55 | 543 | Dprintf(stderr, "corrupted directory: bad inum %d\n", |
1227625a SP |
544 | dp->d_ino); |
545 | continue; | |
546 | } | |
547 | return (dp); | |
548 | } | |
549 | } | |
550 | ||
551 | /* | |
552 | * Simulate the opening of a directory | |
553 | */ | |
554 | RST_DIR * | |
ddd2ef55 | 555 | rst_opendir(const char *name) |
1227625a SP |
556 | { |
557 | struct inotab *itp; | |
558 | RST_DIR *dirp; | |
559 | ino_t ino; | |
560 | ||
561 | if ((ino = dirlookup(name)) > 0 && | |
562 | (itp = inotablookup(ino)) != NULL) { | |
563 | dirp = opendirfile(dirfile); | |
564 | rst_seekdir(dirp, itp->t_seekpt, itp->t_seekpt); | |
565 | return (dirp); | |
566 | } | |
567 | return (NULL); | |
568 | } | |
569 | ||
570 | /* | |
571 | * In our case, there is nothing to do when closing a directory. | |
572 | */ | |
573 | void | |
ddd2ef55 | 574 | rst_closedir(RST_DIR *dirp) |
1227625a SP |
575 | { |
576 | ||
577 | (void)close(dirp->dd_fd); | |
578 | free(dirp); | |
579 | return; | |
580 | } | |
581 | ||
582 | /* | |
583 | * Simulate finding the current offset in the directory. | |
584 | */ | |
585 | static long | |
ddd2ef55 | 586 | rst_telldir(RST_DIR *dirp) |
1227625a SP |
587 | { |
588 | return ((long)lseek(dirp->dd_fd, | |
589 | (off_t)0, SEEK_CUR) - dirp->dd_size + dirp->dd_loc); | |
590 | } | |
591 | ||
592 | /* | |
593 | * Open a directory file. | |
594 | */ | |
595 | static RST_DIR * | |
ddd2ef55 | 596 | opendirfile(const char *name) |
1227625a SP |
597 | { |
598 | register RST_DIR *dirp; | |
599 | register int fd; | |
600 | ||
601 | if ((fd = open(name, O_RDONLY)) == -1) | |
602 | return (NULL); | |
603 | if ((dirp = malloc(sizeof(RST_DIR))) == NULL) { | |
604 | (void)close(fd); | |
605 | return (NULL); | |
606 | } | |
607 | dirp->dd_fd = fd; | |
608 | dirp->dd_loc = 0; | |
609 | return (dirp); | |
610 | } | |
611 | ||
612 | /* | |
613 | * Set the mode, owner, and times for all new or changed directories | |
614 | */ | |
615 | void | |
ddd2ef55 | 616 | setdirmodes(int flags) |
1227625a SP |
617 | { |
618 | FILE *mf; | |
619 | struct modeinfo node; | |
620 | struct entry *ep; | |
621 | char *cp; | |
b45f51d6 | 622 | |
ddd2ef55 | 623 | Vprintf(stdout, "Set directory mode, owner, and times.\n"); |
b45f51d6 | 624 | if (command == 'r' || command == 'R') |
ddd2ef55 | 625 | (void) snprintf(modefile, sizeof(modefile), "%s/rstmode%lu", tmpdir, (long)dumpdate); |
b45f51d6 SP |
626 | if (modefile[0] == '#') { |
627 | panic("modefile not defined\n"); | |
628 | fprintf(stderr, "directory mode, owner, and times not set\n"); | |
629 | return; | |
630 | } | |
1227625a SP |
631 | mf = fopen(modefile, "r"); |
632 | if (mf == NULL) { | |
ddd2ef55 | 633 | warn("fopen"); |
1227625a SP |
634 | fprintf(stderr, "cannot open mode file %s\n", modefile); |
635 | fprintf(stderr, "directory mode, owner, and times not set\n"); | |
636 | return; | |
637 | } | |
638 | clearerr(mf); | |
639 | for (;;) { | |
640 | (void) fread((char *)&node, 1, sizeof(struct modeinfo), mf); | |
641 | if (feof(mf)) | |
642 | break; | |
643 | ep = lookupino(node.ino); | |
644 | if (command == 'i' || command == 'x') { | |
645 | if (ep == NULL) | |
646 | continue; | |
647 | if ((flags & FORCE) == 0 && ep->e_flags & EXISTED) { | |
648 | ep->e_flags &= ~NEW; | |
649 | continue; | |
650 | } | |
651 | if (node.ino == ROOTINO && | |
652 | reply("set owner/mode for '.'") == FAIL) | |
653 | continue; | |
654 | } | |
655 | if (ep == NULL) { | |
656 | panic("cannot find directory inode %d\n", node.ino); | |
657 | } else { | |
658 | cp = myname(ep); | |
659 | (void) chown(cp, node.uid, node.gid); | |
660 | (void) chmod(cp, node.mode); | |
8d4197bb | 661 | if (node.flags) |
1227625a | 662 | #ifdef __linux__ |
8d4197bb | 663 | (void) fsetflags(cp, node.flags); |
1227625a | 664 | #else |
8d4197bb | 665 | (void) chflags(cp, node.flags); |
1227625a SP |
666 | #endif |
667 | utimes(cp, node.timep); | |
668 | ep->e_flags &= ~NEW; | |
669 | } | |
670 | } | |
671 | if (ferror(mf)) | |
672 | panic("error setting directory modes\n"); | |
673 | (void) fclose(mf); | |
674 | } | |
675 | ||
676 | /* | |
677 | * Generate a literal copy of a directory. | |
678 | */ | |
679 | int | |
ddd2ef55 | 680 | genliteraldir(char *name, ino_t ino) |
1227625a SP |
681 | { |
682 | register struct inotab *itp; | |
683 | int ofile, dp, i, size; | |
684 | char buf[BUFSIZ]; | |
685 | ||
686 | itp = inotablookup(ino); | |
687 | if (itp == NULL) | |
688 | panic("Cannot find directory inode %d named %s\n", ino, name); | |
689 | if ((ofile = open(name, O_WRONLY | O_CREAT | O_TRUNC, 0666)) < 0) { | |
ddd2ef55 | 690 | warn("%s: cannot create file\n", name); |
1227625a SP |
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 = i < BUFSIZ ? i : BUFSIZ; | |
697 | if (read(dp, buf, (int) size) == -1) { | |
ddd2ef55 SP |
698 | warnx("write error extracting inode %lu, name %s\n", |
699 | (unsigned long)curfile.ino, curfile.name); | |
700 | err(1, "read"); | |
1227625a SP |
701 | } |
702 | if (!Nflag && write(ofile, buf, (int) size) == -1) { | |
ddd2ef55 SP |
703 | warnx("write error extracting inode %lu, name %s\n", |
704 | (unsigned long)curfile.ino, curfile.name); | |
705 | err(1, "write"); | |
1227625a SP |
706 | } |
707 | } | |
708 | (void) close(dp); | |
709 | (void) close(ofile); | |
710 | return (GOOD); | |
711 | } | |
712 | ||
713 | /* | |
714 | * Determine the type of an inode | |
715 | */ | |
716 | int | |
ddd2ef55 | 717 | inodetype(ino_t ino) |
1227625a SP |
718 | { |
719 | struct inotab *itp; | |
720 | ||
721 | itp = inotablookup(ino); | |
722 | if (itp == NULL) | |
723 | return (LEAF); | |
724 | return (NODE); | |
725 | } | |
726 | ||
727 | /* | |
728 | * Allocate and initialize a directory inode entry. | |
729 | * If requested, save its pertinent mode, owner, and time info. | |
730 | */ | |
731 | static struct inotab * | |
1227625a | 732 | #ifdef __linux__ |
ddd2ef55 | 733 | allocinotab(ino_t ino, struct new_bsd_inode *dip, long seekpt) |
1227625a | 734 | #else |
ddd2ef55 | 735 | allocinotab(ino_t ino, struct dinode *dip, long seekpt) |
1227625a | 736 | #endif |
1227625a SP |
737 | { |
738 | register struct inotab *itp; | |
739 | struct modeinfo node; | |
740 | ||
741 | itp = calloc(1, sizeof(struct inotab)); | |
742 | if (itp == NULL) | |
743 | panic("no memory directory table\n"); | |
744 | itp->t_next = inotab[INOHASH(ino)]; | |
745 | inotab[INOHASH(ino)] = itp; | |
746 | itp->t_ino = ino; | |
747 | itp->t_seekpt = seekpt; | |
748 | if (mf == NULL) | |
749 | return (itp); | |
750 | node.ino = ino; | |
751 | #ifdef __linux__ | |
752 | node.timep[0].tv_sec = dip->di_atime.tv_sec; | |
753 | node.timep[0].tv_usec = dip->di_atime.tv_usec; | |
754 | node.timep[1].tv_sec = dip->di_mtime.tv_sec; | |
755 | node.timep[1].tv_usec = dip->di_mtime.tv_usec; | |
756 | #else /* __linux__ */ | |
757 | node.timep[0].tv_sec = dip->di_atime; | |
758 | node.timep[0].tv_usec = dip->di_atimensec / 1000; | |
759 | node.timep[1].tv_sec = dip->di_mtime; | |
760 | node.timep[1].tv_usec = dip->di_mtimensec / 1000; | |
761 | #endif /* __linux__ */ | |
762 | node.mode = dip->di_mode; | |
763 | node.flags = dip->di_flags; | |
764 | node.uid = dip->di_uid; | |
765 | node.gid = dip->di_gid; | |
766 | (void) fwrite((char *)&node, 1, sizeof(struct modeinfo), mf); | |
767 | return (itp); | |
768 | } | |
769 | ||
770 | /* | |
771 | * Look up an inode in the table of directories | |
772 | */ | |
773 | static struct inotab * | |
ddd2ef55 | 774 | inotablookup(ino_t ino) |
1227625a SP |
775 | { |
776 | register struct inotab *itp; | |
777 | ||
778 | for (itp = inotab[INOHASH(ino)]; itp != NULL; itp = itp->t_next) | |
779 | if (itp->t_ino == ino) | |
780 | return (itp); | |
781 | return (NULL); | |
782 | } | |
783 | ||
784 | /* | |
785 | * Clean up and exit | |
786 | */ | |
b45f51d6 | 787 | void |
ddd2ef55 | 788 | cleanup(void) |
1227625a | 789 | { |
1227625a SP |
790 | closemt(); |
791 | if (modefile[0] != '#') | |
792 | (void) unlink(modefile); | |
793 | if (dirfile[0] != '#') | |
794 | (void) unlink(dirfile); | |
1227625a | 795 | } |