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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 | |
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 | * | |
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. All advertising materials mentioning features or use of this software | |
21 | * must display the following acknowledgement: | |
22 | * This product includes software developed by the University of | |
23 | * California, Berkeley and its contributors. | |
24 | * 4. Neither the name of the University nor the names of its contributors | |
25 | * may be used to endorse or promote products derived from this software | |
26 | * without specific prior written permission. | |
27 | * | |
28 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
29 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
30 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
31 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
32 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
33 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
34 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
35 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
36 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
37 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
38 | * SUCH DAMAGE. | |
39 | */ | |
40 | ||
41 | #ifndef lint | |
42 | static char sccsid[] = "@(#)symtab.c 8.3 (Berkeley) 4/28/95"; | |
43 | #endif /* not lint */ | |
44 | ||
45 | /* | |
46 | * These routines maintain the symbol table which tracks the state | |
47 | * of the file system being restored. They provide lookup by either | |
48 | * name or inode number. They also provide for creation, deletion, | |
49 | * and renaming of entries. Because of the dynamic nature of pathnames, | |
50 | * names should not be saved, but always constructed just before they | |
51 | * are needed, by calling "myname". | |
52 | */ | |
53 | ||
54 | #include <sys/param.h> | |
55 | #include <sys/stat.h> | |
56 | ||
57 | #ifdef __linux__ | |
58 | #include <sys/time.h> | |
59 | #include <linux/ext2_fs.h> | |
60 | #include <bsdcompat.h> | |
61 | #else /* __linux__ */ | |
62 | #include <ufs/ufs/dinode.h> | |
63 | #endif /* __linux__ */ | |
64 | ||
65 | #include <errno.h> | |
66 | #include <fcntl.h> | |
67 | #include <stdio.h> | |
68 | #include <stdlib.h> | |
69 | #include <string.h> | |
70 | #include <unistd.h> | |
71 | ||
72 | #ifdef __linux__ | |
73 | #include <ext2fs/ext2fs.h> | |
74 | #endif | |
75 | ||
76 | #include "restore.h" | |
77 | #include "extern.h" | |
78 | ||
79 | /* | |
80 | * The following variables define the inode symbol table. | |
81 | * The primary hash table is dynamically allocated based on | |
82 | * the number of inodes in the file system (maxino), scaled by | |
83 | * HASHFACTOR. The variable "entry" points to the hash table; | |
84 | * the variable "entrytblsize" indicates its size (in entries). | |
85 | */ | |
86 | #define HASHFACTOR 5 | |
87 | static struct entry **entry; | |
88 | static long entrytblsize; | |
89 | ||
90 | static void addino __P((ino_t, struct entry *)); | |
91 | static struct entry *lookupparent __P((char *)); | |
92 | static void removeentry __P((struct entry *)); | |
93 | ||
94 | /* | |
95 | * Look up an entry by inode number | |
96 | */ | |
97 | struct entry * | |
98 | lookupino(inum) | |
99 | ino_t inum; | |
100 | { | |
101 | register struct entry *ep; | |
102 | ||
103 | if (inum < WINO || inum >= maxino) | |
104 | return (NULL); | |
105 | for (ep = entry[inum % entrytblsize]; ep != NULL; ep = ep->e_next) | |
106 | if (ep->e_ino == inum) | |
107 | return (ep); | |
108 | return (NULL); | |
109 | } | |
110 | ||
111 | /* | |
112 | * Add an entry into the entry table | |
113 | */ | |
114 | static void | |
115 | addino(inum, np) | |
116 | ino_t inum; | |
117 | struct entry *np; | |
118 | { | |
119 | struct entry **epp; | |
120 | ||
121 | if (inum < WINO || inum >= maxino) | |
122 | panic("addino: out of range %d\n", inum); | |
123 | epp = &entry[inum % entrytblsize]; | |
124 | np->e_ino = inum; | |
125 | np->e_next = *epp; | |
126 | *epp = np; | |
127 | if (dflag) | |
128 | for (np = np->e_next; np != NULL; np = np->e_next) | |
129 | if (np->e_ino == inum) | |
130 | badentry(np, "duplicate inum"); | |
131 | } | |
132 | ||
133 | /* | |
134 | * Delete an entry from the entry table | |
135 | */ | |
136 | void | |
137 | deleteino(inum) | |
138 | ino_t inum; | |
139 | { | |
140 | register struct entry *next; | |
141 | struct entry **prev; | |
142 | ||
143 | if (inum < WINO || inum >= maxino) | |
144 | panic("deleteino: out of range %d\n", inum); | |
145 | prev = &entry[inum % entrytblsize]; | |
146 | for (next = *prev; next != NULL; next = next->e_next) { | |
147 | if (next->e_ino == inum) { | |
148 | next->e_ino = 0; | |
149 | *prev = next->e_next; | |
150 | return; | |
151 | } | |
152 | prev = &next->e_next; | |
153 | } | |
154 | panic("deleteino: %d not found\n", inum); | |
155 | } | |
156 | ||
157 | /* | |
158 | * Look up an entry by name | |
159 | */ | |
160 | struct entry * | |
161 | lookupname(name) | |
162 | char *name; | |
163 | { | |
164 | register struct entry *ep; | |
165 | register char *np, *cp; | |
166 | char buf[MAXPATHLEN]; | |
167 | ||
168 | cp = name; | |
169 | for (ep = lookupino(ROOTINO); ep != NULL; ep = ep->e_entries) { | |
170 | for (np = buf; *cp != '/' && *cp != '\0'; ) | |
171 | *np++ = *cp++; | |
172 | *np = '\0'; | |
173 | for ( ; ep != NULL; ep = ep->e_sibling) | |
174 | if (strcmp(ep->e_name, buf) == 0) | |
175 | break; | |
176 | if (ep == NULL) | |
177 | break; | |
178 | if (*cp++ == '\0') | |
179 | return (ep); | |
180 | } | |
181 | return (NULL); | |
182 | } | |
183 | ||
184 | /* | |
185 | * Look up the parent of a pathname | |
186 | */ | |
187 | static struct entry * | |
188 | lookupparent(name) | |
189 | char *name; | |
190 | { | |
191 | struct entry *ep; | |
192 | char *tailindex; | |
193 | ||
194 | tailindex = strrchr(name, '/'); | |
195 | if (tailindex == NULL) | |
196 | return (NULL); | |
197 | *tailindex = '\0'; | |
198 | ep = lookupname(name); | |
199 | *tailindex = '/'; | |
200 | if (ep == NULL) | |
201 | return (NULL); | |
202 | if (ep->e_type != NODE) | |
203 | panic("%s is not a directory\n", name); | |
204 | return (ep); | |
205 | } | |
206 | ||
207 | /* | |
208 | * Determine the current pathname of a node or leaf | |
209 | */ | |
210 | char * | |
211 | myname(ep) | |
212 | register struct entry *ep; | |
213 | { | |
214 | register char *cp; | |
215 | static char namebuf[MAXPATHLEN]; | |
216 | ||
217 | for (cp = &namebuf[MAXPATHLEN - 2]; cp > &namebuf[ep->e_namlen]; ) { | |
218 | cp -= ep->e_namlen; | |
219 | memmove(cp, ep->e_name, (long)ep->e_namlen); | |
220 | if (ep == lookupino(ROOTINO)) | |
221 | return (cp); | |
222 | *(--cp) = '/'; | |
223 | ep = ep->e_parent; | |
224 | } | |
225 | panic("%s: pathname too long\n", cp); | |
226 | return(cp); | |
227 | } | |
228 | ||
229 | /* | |
230 | * Unused symbol table entries are linked together on a freelist | |
231 | * headed by the following pointer. | |
232 | */ | |
233 | static struct entry *freelist = NULL; | |
234 | ||
235 | /* | |
236 | * add an entry to the symbol table | |
237 | */ | |
238 | struct entry * | |
239 | addentry(name, inum, type) | |
240 | char *name; | |
241 | ino_t inum; | |
242 | int type; | |
243 | { | |
244 | register struct entry *np, *ep; | |
245 | ||
246 | if (freelist != NULL) { | |
247 | np = freelist; | |
248 | freelist = np->e_next; | |
249 | memset(np, 0, (long)sizeof(struct entry)); | |
250 | } else { | |
251 | np = (struct entry *)calloc(1, sizeof(struct entry)); | |
252 | if (np == NULL) | |
253 | panic("no memory to extend symbol table\n"); | |
254 | } | |
255 | np->e_type = type & ~LINK; | |
256 | ep = lookupparent(name); | |
257 | if (ep == NULL) { | |
258 | if (inum != ROOTINO || lookupino(ROOTINO) != NULL) | |
259 | panic("bad name to addentry %s\n", name); | |
260 | np->e_name = savename(name); | |
261 | np->e_namlen = strlen(name); | |
262 | np->e_parent = np; | |
263 | addino(ROOTINO, np); | |
264 | return (np); | |
265 | } | |
266 | np->e_name = savename(strrchr(name, '/') + 1); | |
267 | np->e_namlen = strlen(np->e_name); | |
268 | np->e_parent = ep; | |
269 | np->e_sibling = ep->e_entries; | |
270 | ep->e_entries = np; | |
271 | if (type & LINK) { | |
272 | ep = lookupino(inum); | |
273 | if (ep == NULL) | |
274 | panic("link to non-existant name\n"); | |
275 | np->e_ino = inum; | |
276 | np->e_links = ep->e_links; | |
277 | ep->e_links = np; | |
278 | } else if (inum != 0) { | |
279 | if (lookupino(inum) != NULL) | |
280 | panic("duplicate entry\n"); | |
281 | addino(inum, np); | |
282 | } | |
283 | return (np); | |
284 | } | |
285 | ||
286 | /* | |
287 | * delete an entry from the symbol table | |
288 | */ | |
289 | void | |
290 | freeentry(ep) | |
291 | register struct entry *ep; | |
292 | { | |
293 | register struct entry *np; | |
294 | ino_t inum; | |
295 | ||
296 | if (ep->e_flags != REMOVED) | |
297 | badentry(ep, "not marked REMOVED"); | |
298 | if (ep->e_type == NODE) { | |
299 | if (ep->e_links != NULL) | |
300 | badentry(ep, "freeing referenced directory"); | |
301 | if (ep->e_entries != NULL) | |
302 | badentry(ep, "freeing non-empty directory"); | |
303 | } | |
304 | if (ep->e_ino != 0) { | |
305 | np = lookupino(ep->e_ino); | |
306 | if (np == NULL) | |
307 | badentry(ep, "lookupino failed"); | |
308 | if (np == ep) { | |
309 | inum = ep->e_ino; | |
310 | deleteino(inum); | |
311 | if (ep->e_links != NULL) | |
312 | addino(inum, ep->e_links); | |
313 | } else { | |
314 | for (; np != NULL; np = np->e_links) { | |
315 | if (np->e_links == ep) { | |
316 | np->e_links = ep->e_links; | |
317 | break; | |
318 | } | |
319 | } | |
320 | if (np == NULL) | |
321 | badentry(ep, "link not found"); | |
322 | } | |
323 | } | |
324 | removeentry(ep); | |
325 | freename(ep->e_name); | |
326 | ep->e_next = freelist; | |
327 | freelist = ep; | |
328 | } | |
329 | ||
330 | /* | |
331 | * Relocate an entry in the tree structure | |
332 | */ | |
333 | void | |
334 | moveentry(ep, newname) | |
335 | register struct entry *ep; | |
336 | char *newname; | |
337 | { | |
338 | struct entry *np; | |
339 | char *cp; | |
340 | ||
341 | np = lookupparent(newname); | |
342 | if (np == NULL) | |
343 | badentry(ep, "cannot move ROOT"); | |
344 | if (np != ep->e_parent) { | |
345 | removeentry(ep); | |
346 | ep->e_parent = np; | |
347 | ep->e_sibling = np->e_entries; | |
348 | np->e_entries = ep; | |
349 | } | |
350 | cp = strrchr(newname, '/') + 1; | |
351 | freename(ep->e_name); | |
352 | ep->e_name = savename(cp); | |
353 | ep->e_namlen = strlen(cp); | |
354 | if (strcmp(gentempname(ep), ep->e_name) == 0) | |
355 | ep->e_flags |= TMPNAME; | |
356 | else | |
357 | ep->e_flags &= ~TMPNAME; | |
358 | } | |
359 | ||
360 | /* | |
361 | * Remove an entry in the tree structure | |
362 | */ | |
363 | static void | |
364 | removeentry(ep) | |
365 | register struct entry *ep; | |
366 | { | |
367 | register struct entry *np; | |
368 | ||
369 | np = ep->e_parent; | |
370 | if (np->e_entries == ep) { | |
371 | np->e_entries = ep->e_sibling; | |
372 | } else { | |
373 | for (np = np->e_entries; np != NULL; np = np->e_sibling) { | |
374 | if (np->e_sibling == ep) { | |
375 | np->e_sibling = ep->e_sibling; | |
376 | break; | |
377 | } | |
378 | } | |
379 | if (np == NULL) | |
380 | badentry(ep, "cannot find entry in parent list"); | |
381 | } | |
382 | } | |
383 | ||
384 | /* | |
385 | * Table of unused string entries, sorted by length. | |
386 | * | |
387 | * Entries are allocated in STRTBLINCR sized pieces so that names | |
388 | * of similar lengths can use the same entry. The value of STRTBLINCR | |
389 | * is chosen so that every entry has at least enough space to hold | |
390 | * a "struct strtbl" header. Thus every entry can be linked onto an | |
391 | * apprpriate free list. | |
392 | * | |
393 | * NB. The macro "allocsize" below assumes that "struct strhdr" | |
394 | * has a size that is a power of two. | |
395 | */ | |
396 | struct strhdr { | |
397 | struct strhdr *next; | |
398 | }; | |
399 | ||
400 | #define STRTBLINCR (sizeof(struct strhdr)) | |
401 | #define allocsize(size) (((size) + 1 + STRTBLINCR - 1) & ~(STRTBLINCR - 1)) | |
402 | ||
403 | static struct strhdr strtblhdr[allocsize(NAME_MAX) / STRTBLINCR]; | |
404 | ||
405 | /* | |
406 | * Allocate space for a name. It first looks to see if it already | |
407 | * has an appropriate sized entry, and if not allocates a new one. | |
408 | */ | |
409 | char * | |
410 | savename(name) | |
411 | char *name; | |
412 | { | |
413 | struct strhdr *np; | |
414 | long len; | |
415 | char *cp; | |
416 | ||
417 | if (name == NULL) | |
418 | panic("bad name\n"); | |
419 | len = strlen(name); | |
420 | np = strtblhdr[len / STRTBLINCR].next; | |
421 | if (np != NULL) { | |
422 | strtblhdr[len / STRTBLINCR].next = np->next; | |
423 | cp = (char *)np; | |
424 | } else { | |
425 | cp = malloc((unsigned)allocsize(len)); | |
426 | if (cp == NULL) | |
427 | panic("no space for string table\n"); | |
428 | } | |
429 | (void) strcpy(cp, name); | |
430 | return (cp); | |
431 | } | |
432 | ||
433 | /* | |
434 | * Free space for a name. The resulting entry is linked onto the | |
435 | * appropriate free list. | |
436 | */ | |
437 | void | |
438 | freename(name) | |
439 | char *name; | |
440 | { | |
441 | struct strhdr *tp, *np; | |
442 | ||
443 | tp = &strtblhdr[strlen(name) / STRTBLINCR]; | |
444 | np = (struct strhdr *)name; | |
445 | np->next = tp->next; | |
446 | tp->next = np; | |
447 | } | |
448 | ||
449 | /* | |
450 | * Useful quantities placed at the end of a dumped symbol table. | |
451 | */ | |
452 | struct symtableheader { | |
453 | long volno; | |
454 | long stringsize; | |
455 | long entrytblsize; | |
456 | time_t dumptime; | |
457 | time_t dumpdate; | |
458 | ino_t maxino; | |
459 | long ntrec; | |
460 | }; | |
461 | ||
462 | /* | |
463 | * dump a snapshot of the symbol table | |
464 | */ | |
465 | void | |
466 | dumpsymtable(filename, checkpt) | |
467 | char *filename; | |
468 | long checkpt; | |
469 | { | |
470 | register struct entry *ep, *tep; | |
471 | register ino_t i; | |
472 | struct entry temp, *tentry; | |
473 | long mynum = 1, stroff = 0; | |
474 | FILE *fd; | |
475 | struct symtableheader hdr; | |
476 | ||
477 | vprintf(stdout, "Check pointing the restore\n"); | |
478 | if (Nflag) | |
479 | return; | |
480 | if ((fd = fopen(filename, "w")) == NULL) { | |
481 | fprintf(stderr, "fopen: %s\n", strerror(errno)); | |
482 | panic("cannot create save file %s for symbol table\n", | |
483 | filename); | |
484 | } | |
485 | clearerr(fd); | |
486 | /* | |
487 | * Assign indicies to each entry | |
488 | * Write out the string entries | |
489 | */ | |
490 | for (i = WINO; i < maxino; i++) { | |
491 | for (ep = lookupino(i); ep != NULL; ep = ep->e_links) { | |
492 | ep->e_index = mynum++; | |
493 | (void) fwrite(ep->e_name, sizeof(char), | |
494 | (int)allocsize(ep->e_namlen), fd); | |
495 | } | |
496 | } | |
497 | /* | |
498 | * Convert pointers to indexes, and output | |
499 | */ | |
500 | tep = &temp; | |
501 | stroff = 0; | |
502 | for (i = WINO; i < maxino; i++) { | |
503 | for (ep = lookupino(i); ep != NULL; ep = ep->e_links) { | |
504 | memmove(tep, ep, (long)sizeof(struct entry)); | |
505 | tep->e_name = (char *)stroff; | |
506 | stroff += allocsize(ep->e_namlen); | |
507 | tep->e_parent = (struct entry *)ep->e_parent->e_index; | |
508 | if (ep->e_links != NULL) | |
509 | tep->e_links = | |
510 | (struct entry *)ep->e_links->e_index; | |
511 | if (ep->e_sibling != NULL) | |
512 | tep->e_sibling = | |
513 | (struct entry *)ep->e_sibling->e_index; | |
514 | if (ep->e_entries != NULL) | |
515 | tep->e_entries = | |
516 | (struct entry *)ep->e_entries->e_index; | |
517 | if (ep->e_next != NULL) | |
518 | tep->e_next = | |
519 | (struct entry *)ep->e_next->e_index; | |
520 | (void) fwrite((char *)tep, sizeof(struct entry), 1, fd); | |
521 | } | |
522 | } | |
523 | /* | |
524 | * Convert entry pointers to indexes, and output | |
525 | */ | |
526 | for (i = 0; i < entrytblsize; i++) { | |
527 | if (entry[i] == NULL) | |
528 | tentry = NULL; | |
529 | else | |
530 | tentry = (struct entry *)entry[i]->e_index; | |
531 | (void) fwrite((char *)&tentry, sizeof(struct entry *), 1, fd); | |
532 | } | |
533 | hdr.volno = checkpt; | |
534 | hdr.maxino = maxino; | |
535 | hdr.entrytblsize = entrytblsize; | |
536 | hdr.stringsize = stroff; | |
537 | hdr.dumptime = dumptime; | |
538 | hdr.dumpdate = dumpdate; | |
539 | hdr.ntrec = ntrec; | |
540 | (void) fwrite((char *)&hdr, sizeof(struct symtableheader), 1, fd); | |
541 | if (ferror(fd)) { | |
542 | fprintf(stderr, "fwrite: %s\n", strerror(errno)); | |
543 | panic("output error to file %s writing symbol table\n", | |
544 | filename); | |
545 | } | |
546 | (void) fclose(fd); | |
547 | } | |
548 | ||
549 | /* | |
550 | * Initialize a symbol table from a file | |
551 | */ | |
552 | void | |
553 | initsymtable(filename) | |
554 | char *filename; | |
555 | { | |
556 | char *base; | |
557 | long tblsize; | |
558 | register struct entry *ep; | |
559 | struct entry *baseep, *lep; | |
560 | struct symtableheader hdr; | |
561 | struct stat stbuf; | |
562 | register long i; | |
563 | int fd; | |
564 | ||
565 | vprintf(stdout, "Initialize symbol table.\n"); | |
566 | if (filename == NULL) { | |
567 | entrytblsize = maxino / HASHFACTOR; | |
568 | entry = (struct entry **) | |
569 | calloc((unsigned)entrytblsize, sizeof(struct entry *)); | |
570 | if (entry == (struct entry **)NULL) | |
571 | panic("no memory for entry table\n"); | |
572 | ep = addentry(".", ROOTINO, NODE); | |
573 | ep->e_flags |= NEW; | |
574 | return; | |
575 | } | |
576 | if ((fd = open(filename, O_RDONLY, 0)) < 0) { | |
577 | fprintf(stderr, "open: %s\n", strerror(errno)); | |
578 | panic("cannot open symbol table file %s\n", filename); | |
579 | } | |
580 | if (fstat(fd, &stbuf) < 0) { | |
581 | fprintf(stderr, "stat: %s\n", strerror(errno)); | |
582 | panic("cannot stat symbol table file %s\n", filename); | |
583 | } | |
584 | tblsize = stbuf.st_size - sizeof(struct symtableheader); | |
585 | base = calloc(sizeof(char), (unsigned)tblsize); | |
586 | if (base == NULL) | |
587 | panic("cannot allocate space for symbol table\n"); | |
588 | if (read(fd, base, (int)tblsize) < 0 || | |
589 | read(fd, (char *)&hdr, sizeof(struct symtableheader)) < 0) { | |
590 | fprintf(stderr, "read: %s\n", strerror(errno)); | |
591 | panic("cannot read symbol table file %s\n", filename); | |
592 | } | |
593 | switch (command) { | |
594 | case 'r': | |
595 | /* | |
596 | * For normal continuation, insure that we are using | |
597 | * the next incremental tape | |
598 | */ | |
599 | if (hdr.dumpdate != dumptime) { | |
600 | if (hdr.dumpdate < dumptime) | |
601 | fprintf(stderr, "Incremental tape too low\n"); | |
602 | else | |
603 | fprintf(stderr, "Incremental tape too high\n"); | |
604 | done(1); | |
605 | } | |
606 | break; | |
607 | case 'R': | |
608 | /* | |
609 | * For restart, insure that we are using the same tape | |
610 | */ | |
611 | curfile.action = SKIP; | |
612 | dumptime = hdr.dumptime; | |
613 | dumpdate = hdr.dumpdate; | |
614 | if (!bflag) | |
615 | newtapebuf(hdr.ntrec); | |
616 | getvol(hdr.volno); | |
617 | break; | |
618 | default: | |
619 | panic("initsymtable called from command %c\n", command); | |
620 | break; | |
621 | } | |
622 | maxino = hdr.maxino; | |
623 | entrytblsize = hdr.entrytblsize; | |
624 | entry = (struct entry **) | |
625 | (base + tblsize - (entrytblsize * sizeof(struct entry *))); | |
626 | baseep = (struct entry *)(base + hdr.stringsize - sizeof(struct entry)); | |
627 | lep = (struct entry *)entry; | |
628 | for (i = 0; i < entrytblsize; i++) { | |
629 | if (entry[i] == NULL) | |
630 | continue; | |
631 | entry[i] = &baseep[(long)entry[i]]; | |
632 | } | |
633 | for (ep = &baseep[1]; ep < lep; ep++) { | |
634 | ep->e_name = base + (long)ep->e_name; | |
635 | ep->e_parent = &baseep[(long)ep->e_parent]; | |
636 | if (ep->e_sibling != NULL) | |
637 | ep->e_sibling = &baseep[(long)ep->e_sibling]; | |
638 | if (ep->e_links != NULL) | |
639 | ep->e_links = &baseep[(long)ep->e_links]; | |
640 | if (ep->e_entries != NULL) | |
641 | ep->e_entries = &baseep[(long)ep->e_entries]; | |
642 | if (ep->e_next != NULL) | |
643 | ep->e_next = &baseep[(long)ep->e_next]; | |
644 | } | |
645 | } |