2 Unix SMB/CIFS implementation.
4 trivial database library
6 Copyright (C) Andrew Tridgell 1999-2005
7 Copyright (C) Paul `Rusty' Russell 2000
8 Copyright (C) Jeremy Allison 2000-2003
10 ** NOTE! The following LGPL license applies to the tdb
11 ** library. This does NOT imply that all of Samba is released
14 This library is free software; you can redistribute it and/or
15 modify it under the terms of the GNU Lesser General Public
16 License as published by the Free Software Foundation; either
17 version 3 of the License, or (at your option) any later version.
19 This library is distributed in the hope that it will be useful,
20 but WITHOUT ANY WARRANTY; without even the implied warranty of
21 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
22 Lesser General Public License for more details.
24 You should have received a copy of the GNU Lesser General Public
25 License along with this library; if not, see <http://www.gnu.org/licenses/>.
30 static int fcntl_lock(struct tdb_context *tdb,
31 int rw, off_t off, off_t len, bool waitflag)
36 fl.l_whence = SEEK_SET;
42 return fcntl(tdb->fd, F_SETLKW, &fl);
44 return fcntl(tdb->fd, F_SETLK, &fl);
47 static int fcntl_unlock(struct tdb_context *tdb, int rw, off_t off, off_t len)
50 #if 0 /* Check they matched up locks and unlocks correctly. */
55 locks = fopen("/proc/locks", "r");
57 while (fgets(line, 80, locks)) {
61 /* eg. 1: FLOCK ADVISORY WRITE 2440 08:01:2180826 0 EOF */
62 p = strchr(line, ':') + 1;
63 if (strncmp(p, " POSIX ADVISORY ", strlen(" POSIX ADVISORY ")))
65 p += strlen(" FLOCK ADVISORY ");
66 if (strncmp(p, "READ ", strlen("READ ")) == 0)
68 else if (strncmp(p, "WRITE ", strlen("WRITE ")) == 0)
73 if (atoi(p) != getpid())
75 p = strchr(strchr(p, ' ') + 1, ' ') + 1;
77 p = strchr(p, ' ') + 1;
78 if (strncmp(p, "EOF", 3) == 0)
81 l = atoi(p) - start + 1;
85 fprintf(stderr, "Len %u should be %u: %s",
90 fprintf(stderr, "Type %s wrong: %s",
91 rw == F_RDLCK ? "READ" : "WRITE", line);
100 fprintf(stderr, "Unlock on %u@%u not found!\n",
109 fl.l_whence = SEEK_SET;
114 return fcntl(tdb->fd, F_SETLKW, &fl);
117 /* a byte range locking function - return 0 on success
118 this functions locks/unlocks 1 byte at the specified offset.
120 note that a len of zero means lock to end of file
122 static int tdb_brlock(struct tdb_context *tdb,
123 int rw_type, tdb_off_t offset, tdb_off_t len,
124 enum tdb_lock_flags flags)
128 if (tdb->flags & TDB_NOLOCK) {
132 if (rw_type == F_WRLCK && tdb->read_only) {
133 tdb->ecode = TDB_ERR_RDONLY;
137 /* A 32 bit system cannot open a 64-bit file, but it could have
138 * expanded since then: check here. */
139 if ((size_t)(offset + len) != offset + len) {
140 tdb->ecode = TDB_ERR_IO;
141 tdb->log(tdb, TDB_DEBUG_ERROR, tdb->log_priv,
142 "tdb_brlock: lock on giant offset %llu\n",
143 (long long)(offset + len));
148 ret = fcntl_lock(tdb, rw_type, offset, len,
149 flags & TDB_LOCK_WAIT);
150 } while (ret == -1 && errno == EINTR);
153 tdb->ecode = TDB_ERR_LOCK;
154 /* Generic lock error. errno set by fcntl.
155 * EAGAIN is an expected return from non-blocking
157 if (!(flags & TDB_LOCK_PROBE) && errno != EAGAIN) {
158 tdb->log(tdb, TDB_DEBUG_ERROR, tdb->log_priv,
159 "tdb_brlock failed (fd=%d) at"
160 " offset %llu rw_type=%d flags=%d len=%llu\n",
161 tdb->fd, (long long)offset, rw_type,
162 flags, (long long)len);
169 static int tdb_brunlock(struct tdb_context *tdb,
170 int rw_type, tdb_off_t offset, size_t len)
174 if (tdb->flags & TDB_NOLOCK) {
179 ret = fcntl_unlock(tdb, rw_type, offset, len);
180 } while (ret == -1 && errno == EINTR);
183 tdb->log(tdb, TDB_DEBUG_TRACE, tdb->log_priv,
184 "tdb_brunlock failed (fd=%d) at offset %llu"
185 " rw_type=%d len=%llu\n",
186 tdb->fd, (long long)offset, rw_type, (long long)len);
193 upgrade a read lock to a write lock. This needs to be handled in a
194 special way as some OSes (such as solaris) have too conservative
195 deadlock detection and claim a deadlock when progress can be
196 made. For those OSes we may loop for a while.
198 int tdb_allrecord_upgrade(struct tdb_context *tdb)
202 if (tdb->allrecord_lock.count != 1) {
203 tdb->log(tdb, TDB_DEBUG_ERROR, tdb->log_priv,
204 "tdb_allrecord_upgrade failed: count %u too high\n",
205 tdb->allrecord_lock.count);
209 if (tdb->allrecord_lock.off != 1) {
210 tdb->log(tdb, TDB_DEBUG_ERROR, tdb->log_priv,
211 "tdb_allrecord_upgrade failed: already upgraded?\n");
217 if (tdb_brlock(tdb, F_WRLCK,
219 + (1ULL << tdb->header.v.hash_bits), 0,
220 TDB_LOCK_WAIT|TDB_LOCK_PROBE) == 0) {
221 tdb->allrecord_lock.ltype = F_WRLCK;
222 tdb->allrecord_lock.off = 0;
225 if (errno != EDEADLK) {
228 /* sleep for as short a time as we can - more portable than usleep() */
231 select(0, NULL, NULL, NULL, &tv);
233 tdb->log(tdb, TDB_DEBUG_WARNING, tdb->log_priv,
234 "tdb_allrecord_upgrade failed\n");
239 static struct tdb_lock_type *find_nestlock(struct tdb_context *tdb,
244 for (i=0; i<tdb->num_lockrecs; i++) {
245 if (tdb->lockrecs[i].off == offset) {
246 return &tdb->lockrecs[i];
252 /* lock an offset in the database. */
253 static int tdb_nest_lock(struct tdb_context *tdb, tdb_off_t offset, int ltype,
254 enum tdb_lock_flags flags)
256 struct tdb_lock_type *new_lck;
258 if (offset >= TDB_HASH_LOCK_START + (1ULL << tdb->header.v.hash_bits)
259 + (tdb->header.v.num_zones * (tdb->header.v.free_buckets+1))) {
260 tdb->ecode = TDB_ERR_LOCK;
261 tdb->log(tdb, TDB_DEBUG_FATAL, tdb->log_priv,
262 "tdb_lock: invalid offset %llu for ltype=%d\n",
263 (long long)offset, ltype);
266 if (tdb->flags & TDB_NOLOCK)
269 new_lck = find_nestlock(tdb, offset);
272 * Just increment the in-memory struct, posix locks
279 new_lck = (struct tdb_lock_type *)realloc(
281 sizeof(*tdb->lockrecs) * (tdb->num_lockrecs+1));
282 if (new_lck == NULL) {
283 tdb->ecode = TDB_ERR_OOM;
284 tdb->log(tdb, TDB_DEBUG_ERROR, tdb->log_priv,
285 "tdb_lock: unable to allocate %llu lock structure",
286 (long long)(tdb->num_lockrecs + 1));
290 tdb->lockrecs = new_lck;
292 /* Since fcntl locks don't nest, we do a lock for the first one,
293 and simply bump the count for future ones */
294 if (tdb_brlock(tdb, ltype, offset, 1, flags)) {
298 tdb->lockrecs[tdb->num_lockrecs].off = offset;
299 tdb->lockrecs[tdb->num_lockrecs].count = 1;
300 tdb->lockrecs[tdb->num_lockrecs].ltype = ltype;
306 static int tdb_lock_and_recover(struct tdb_context *tdb)
312 /* We need to match locking order in transaction commit. */
313 if (tdb_brlock(tdb, F_WRLCK, FREELIST_TOP, 0, TDB_LOCK_WAIT)) {
317 if (tdb_brlock(tdb, F_WRLCK, OPEN_LOCK, 1, TDB_LOCK_WAIT)) {
318 tdb_brunlock(tdb, F_WRLCK, FREELIST_TOP, 0);
322 ret = tdb_transaction_recover(tdb);
324 tdb_brunlock(tdb, F_WRLCK, OPEN_LOCK, 1);
325 tdb_brunlock(tdb, F_WRLCK, FREELIST_TOP, 0);
334 static bool tdb_needs_recovery(struct tdb_context *tdb)
340 static int tdb_nest_unlock(struct tdb_context *tdb, tdb_off_t off, int ltype)
343 struct tdb_lock_type *lck;
345 if (tdb->flags & TDB_NOLOCK)
348 lck = find_nestlock(tdb, off);
349 if ((lck == NULL) || (lck->count == 0)) {
350 tdb->ecode = TDB_ERR_LOCK;
351 tdb->log(tdb, TDB_DEBUG_ERROR, tdb->log_priv,
352 "tdb_unlock: no lock for %llu\n", (long long)off);
356 if (lck->count > 1) {
362 * This lock has count==1 left, so we need to unlock it in the
363 * kernel. We don't bother with decrementing the in-memory array
364 * element, we're about to overwrite it with the last array element
367 ret = tdb_brunlock(tdb, ltype, off, 1);
370 * Shrink the array by overwriting the element just unlocked with the
371 * last array element.
373 *lck = tdb->lockrecs[--tdb->num_lockrecs];
375 if (tdb->num_lockrecs == 0) {
376 /* If we're not holding any locks, header can change. */
377 tdb->header_uptodate = false;
385 get the transaction lock
387 int tdb_transaction_lock(struct tdb_context *tdb, int ltype,
388 enum tdb_lock_flags lockflags)
390 return tdb_nest_lock(tdb, TRANSACTION_LOCK, ltype, lockflags);
394 release the transaction lock
396 int tdb_transaction_unlock(struct tdb_context *tdb, int ltype)
398 return tdb_nest_unlock(tdb, TRANSACTION_LOCK, ltype, false);
402 /* We only need to lock individual bytes, but Linux merges consecutive locks
403 * so we lock in contiguous ranges. */
404 static int tdb_lock_gradual(struct tdb_context *tdb,
405 int ltype, enum tdb_lock_flags flags,
406 tdb_off_t off, tdb_off_t len)
409 enum tdb_lock_flags nb_flags = (flags & ~TDB_LOCK_WAIT);
412 /* Single record. Just do blocking lock. */
413 return tdb_brlock(tdb, ltype, off, len, flags);
416 /* First we try non-blocking. */
417 ret = tdb_brlock(tdb, ltype, off, len, nb_flags);
422 /* Try locking first half, then second. */
423 ret = tdb_lock_gradual(tdb, ltype, flags, off, len / 2);
427 ret = tdb_lock_gradual(tdb, ltype, flags,
428 off + len / 2, len - len / 2);
430 tdb_brunlock(tdb, ltype, off, len / 2);
436 /* lock/unlock entire database. It can only be upgradable if you have some
437 * other way of guaranteeing exclusivity (ie. transaction write lock).
438 * Note that we don't lock the free chains: noone can get those locks
439 * without a hash chain lock first. */
440 int tdb_allrecord_lock(struct tdb_context *tdb, int ltype,
441 enum tdb_lock_flags flags, bool upgradable)
445 /* FIXME: There are no locks on read-only dbs */
446 if (tdb->read_only) {
447 tdb->ecode = TDB_ERR_LOCK;
448 tdb->log(tdb, TDB_DEBUG_ERROR, tdb->log_priv,
449 "tdb_allrecord_lock: read-only\n");
453 if (tdb->allrecord_lock.count && tdb->allrecord_lock.ltype == ltype) {
454 tdb->allrecord_lock.count++;
458 if (tdb->allrecord_lock.count) {
459 /* a global lock of a different type exists */
460 tdb->ecode = TDB_ERR_LOCK;
461 tdb->log(tdb, TDB_DEBUG_ERROR, tdb->log_priv,
462 "tdb_allrecord_lock: already have %s lock\n",
463 tdb->allrecord_lock.ltype == F_RDLCK
468 if (tdb_has_locks(tdb)) {
469 /* can't combine global and chain locks */
470 tdb->ecode = TDB_ERR_LOCK;
471 tdb->log(tdb, TDB_DEBUG_ERROR, tdb->log_priv,
472 "tdb_allrecord_lock: already have chain lock\n");
476 if (upgradable && ltype != F_RDLCK) {
477 /* tdb error: you can't upgrade a write lock! */
478 tdb->ecode = TDB_ERR_LOCK;
479 tdb->log(tdb, TDB_DEBUG_ERROR, tdb->log_priv,
480 "tdb_allrecord_lock: can't upgrade a write lock\n");
484 /* Lock all the hash buckets. */
486 hash_size = (1ULL << tdb->header.v.hash_bits);
487 if (tdb_lock_gradual(tdb, ltype, TDB_HASH_LOCK_START,
488 1ULL << tdb->header.v.hash_bits, flags)) {
489 if (!(flags & TDB_LOCK_PROBE)) {
490 tdb->log(tdb, TDB_DEBUG_ERROR, tdb->log_priv,
491 "tdb_lockall hashes failed (%s)\n",
497 /* Now we re-check header, holding lock. */
498 if (unlikely(update_header(tdb))) {
499 tdb_brunlock(tdb, ltype, TDB_HASH_LOCK_START, hash_size);
503 /* Now check for needing recovery. */
504 if (unlikely(tdb_needs_recovery(tdb))) {
505 tdb_brunlock(tdb, ltype, TDB_HASH_LOCK_START, hash_size);
506 if (tdb_lock_and_recover(tdb) == -1) {
513 tdb->allrecord_lock.count = 1;
514 /* If it's upgradable, it's actually exclusive so we can treat
515 * it as a write lock. */
516 tdb->allrecord_lock.ltype = upgradable ? F_WRLCK : ltype;
517 tdb->allrecord_lock.off = upgradable;
521 int tdb_lock_open(struct tdb_context *tdb)
523 return tdb_nest_lock(tdb, TDB_OPEN_LOCK, F_WRLCK, TDB_LOCK_WAIT);
526 void tdb_unlock_open(struct tdb_context *tdb)
528 tdb_nest_unlock(tdb, TDB_OPEN_LOCK, F_WRLCK);
531 /* unlock entire db */
532 int tdb_allrecord_unlock(struct tdb_context *tdb, int ltype)
536 /* FIXME: There are no locks on read-only dbs */
537 if (tdb->read_only) {
538 tdb->ecode = TDB_ERR_LOCK;
539 tdb->log(tdb, TDB_DEBUG_ERROR, tdb->log_priv,
540 "tdb_allrecord_unlock: read-only\n");
544 if (tdb->allrecord_lock.count == 0) {
545 tdb->ecode = TDB_ERR_LOCK;
546 tdb->log(tdb, TDB_DEBUG_ERROR, tdb->log_priv,
547 "tdb_allrecord_unlock: not locked!\n");
551 /* Upgradable locks are marked as write locks. */
552 if (tdb->allrecord_lock.ltype != ltype
553 && (!tdb->allrecord_lock.off || ltype != F_RDLCK)) {
554 tdb->ecode = TDB_ERR_LOCK;
555 tdb->log(tdb, TDB_DEBUG_ERROR, tdb->log_priv,
556 "tdb_allrecord_unlock: have %s lock\n",
557 tdb->allrecord_lock.ltype == F_RDLCK
562 if (tdb->allrecord_lock.count > 1) {
563 tdb->allrecord_lock.count--;
567 tdb->allrecord_lock.count = 0;
568 tdb->allrecord_lock.ltype = 0;
570 hash_size = (1ULL << tdb->header.v.hash_bits);
572 return tdb_brunlock(tdb, ltype, TDB_HASH_LOCK_START, hash_size);
575 bool tdb_has_locks(struct tdb_context *tdb)
577 return tdb->allrecord_lock.count || tdb->num_lockrecs;
581 /* lock entire database with write lock */
582 int tdb_lockall(struct tdb_context *tdb)
584 tdb_trace(tdb, "tdb_lockall");
585 return tdb_allrecord_lock(tdb, F_WRLCK, TDB_LOCK_WAIT, false);
588 /* lock entire database with write lock - nonblocking varient */
589 int tdb_lockall_nonblock(struct tdb_context *tdb)
591 int ret = tdb_allrecord_lock(tdb, F_WRLCK, TDB_LOCK_NOWAIT, false);
592 tdb_trace_ret(tdb, "tdb_lockall_nonblock", ret);
596 /* unlock entire database with write lock */
597 int tdb_unlockall(struct tdb_context *tdb)
599 tdb_trace(tdb, "tdb_unlockall");
600 return tdb_allrecord_unlock(tdb, F_WRLCK);
603 /* lock entire database with read lock */
604 int tdb_lockall_read(struct tdb_context *tdb)
606 tdb_trace(tdb, "tdb_lockall_read");
607 return tdb_allrecord_lock(tdb, F_RDLCK, TDB_LOCK_WAIT, false);
610 /* lock entire database with read lock - nonblock varient */
611 int tdb_lockall_read_nonblock(struct tdb_context *tdb)
613 int ret = tdb_allrecord_lock(tdb, F_RDLCK, TDB_LOCK_NOWAIT, false);
614 tdb_trace_ret(tdb, "tdb_lockall_read_nonblock", ret);
618 /* unlock entire database with read lock */
619 int tdb_unlockall_read(struct tdb_context *tdb)
621 tdb_trace(tdb, "tdb_unlockall_read");
622 return tdb_allrecord_unlock(tdb, F_RDLCK);
626 int tdb_lock_list(struct tdb_context *tdb, tdb_off_t list,
627 int ltype, enum tdb_lock_flags waitflag)
629 /* a allrecord lock allows us to avoid per chain locks */
630 if (tdb->allrecord_lock.count &&
631 (ltype == tdb->allrecord_lock.ltype || ltype == F_RDLCK)) {
635 if (tdb->allrecord_lock.count) {
636 tdb->ecode = TDB_ERR_LOCK;
637 tdb->log(tdb, TDB_DEBUG_ERROR, tdb->log_priv,
638 "tdb_lock_list: have %s allrecordlock\n",
639 tdb->allrecord_lock.ltype == F_RDLCK
644 /* FIXME: Should we do header_uptodate and return retry here? */
645 return tdb_nest_lock(tdb, TDB_HASH_LOCK_START + list, ltype, waitflag);
648 int tdb_unlock_list(struct tdb_context *tdb, tdb_off_t list, int ltype)
650 /* a allrecord lock allows us to avoid per chain locks */
651 if (tdb->allrecord_lock.count) {
652 if (tdb->allrecord_lock.ltype == F_RDLCK
653 && ltype == F_WRLCK) {
654 tdb->ecode = TDB_ERR_LOCK;
655 tdb->log(tdb, TDB_DEBUG_FATAL, tdb->log_priv,
656 "tdb_unlock_list RO allrecord!\n");
661 return tdb_nest_unlock(tdb, TDB_HASH_LOCK_START + list, ltype);
665 /* Free list locks come after hash locks */
666 int tdb_lock_free_list(struct tdb_context *tdb, tdb_off_t flist,
667 enum tdb_lock_flags waitflag)
669 /* You're supposed to have a hash lock first! */
670 if (!tdb_has_locks(tdb)) {
671 tdb->ecode = TDB_ERR_LOCK;
672 tdb->log(tdb, TDB_DEBUG_FATAL, tdb->log_priv,
673 "tdb_lock_free_list without lock!\n");
677 /* a allrecord lock allows us to avoid per chain locks */
678 if (tdb->allrecord_lock.count) {
679 if (tdb->allrecord_lock.ltype == F_WRLCK)
681 tdb->ecode = TDB_ERR_LOCK;
682 tdb->log(tdb, TDB_DEBUG_FATAL, tdb->log_priv,
683 "tdb_lock_free_list with RO allrecordlock!\n");
687 return tdb_nest_lock(tdb, TDB_HASH_LOCK_START
688 + (1ULL << tdb->header.v.hash_bits)
689 + flist, F_WRLCK, waitflag);
692 void tdb_unlock_free_list(struct tdb_context *tdb, tdb_off_t flist)
694 if (tdb->allrecord_lock.count)
697 tdb_nest_unlock(tdb, TDB_HASH_LOCK_START
698 + (1ULL << tdb->header.v.hash_bits)
703 static int chainlock_loop(struct tdb_context *tdb, const TDB_DATA *key,
704 int ltype, enum tdb_lock_flags waitflag,
708 uint64_t h = tdb_hash(tdb, key->dptr, key->dsize);
711 ret = tdb_lock_list(tdb,
712 h & ((1ULL << tdb->header.v.hash_bits) - 1),
714 if (likely(ret == 0) && unlikely(update_header(tdb))) {
715 tdb_unlock_list(tdb, h & ((1ULL << tdb->header.v.hash_bits)-1),
720 tdb_trace_1rec(tdb, func, *key);
724 /* lock/unlock one hash chain. This is meant to be used to reduce
725 contention - it cannot guarantee how many records will be locked */
726 int tdb_chainlock(struct tdb_context *tdb, TDB_DATA key)
728 return chainlock_loop(tdb, &key, F_WRLCK, TDB_LOCK_WAIT,
732 /* lock/unlock one hash chain, non-blocking. This is meant to be used
733 to reduce contention - it cannot guarantee how many records will be
735 int tdb_chainlock_nonblock(struct tdb_context *tdb, TDB_DATA key)
737 return chainlock_loop(tdb, &key, F_WRLCK, TDB_LOCK_NOWAIT,
738 "tdb_chainlock_nonblock");
741 int tdb_chainunlock(struct tdb_context *tdb, TDB_DATA key)
743 uint64_t h = tdb_hash(tdb, key.dptr, key.dsize);
744 tdb_trace_1rec(tdb, "tdb_chainunlock", key);
745 return tdb_unlock_list(tdb, h & ((1ULL << tdb->header.v.hash_bits)-1),
749 int tdb_chainlock_read(struct tdb_context *tdb, TDB_DATA key)
751 return chainlock_loop(tdb, &key, F_RDLCK, TDB_LOCK_WAIT,
752 "tdb_chainlock_read");
755 int tdb_chainunlock_read(struct tdb_context *tdb, TDB_DATA key)
757 uint64_t h = tdb_hash(tdb, key.dptr, key.dsize);
758 tdb_trace_1rec(tdb, "tdb_chainunlock_read", key);
759 return tdb_unlock_list(tdb, h & ((1ULL << tdb->header.v.hash_bits)-1),
763 /* record lock stops delete underneath */
764 int tdb_lock_record(struct tdb_context *tdb, tdb_off_t off)
766 if (tdb->allrecord_lock.count) {
769 return off ? tdb_brlock(tdb, F_RDLCK, off, 1, TDB_LOCK_WAIT) : 0;
773 Write locks override our own fcntl readlocks, so check it here.
774 Note this is meant to be F_SETLK, *not* F_SETLKW, as it's not
775 an error to fail to get the lock here.
777 int tdb_write_lock_record(struct tdb_context *tdb, tdb_off_t off)
779 struct tdb_traverse_lock *i;
780 for (i = &tdb->travlocks; i; i = i->next)
783 if (tdb->allrecord_lock.count) {
784 if (tdb->allrecord_lock.ltype == F_WRLCK) {
789 return tdb_brlock(tdb, F_WRLCK, off, 1, TDB_LOCK_NOWAIT|TDB_LOCK_PROBE);
792 int tdb_write_unlock_record(struct tdb_context *tdb, tdb_off_t off)
794 if (tdb->allrecord_lock.count) {
797 return tdb_brunlock(tdb, F_WRLCK, off, 1);
800 /* fcntl locks don't stack: avoid unlocking someone else's */
801 int tdb_unlock_record(struct tdb_context *tdb, tdb_off_t off)
803 struct tdb_traverse_lock *i;
806 if (tdb->allrecord_lock.count) {
812 for (i = &tdb->travlocks; i; i = i->next)
815 return (count == 1 ? tdb_brunlock(tdb, F_RDLCK, off, 1) : 0);
818 /* The transaction code uses this to remove all locks. */
819 void tdb_release_transaction_locks(struct tdb_context *tdb)
823 if (tdb->allrecord_lock.count != 0) {
824 tdb_off_t hash_size, free_size;
826 hash_size = (1ULL << tdb->header.v.hash_bits)
828 free_size = tdb->header.v.free_zones
829 * (tdb->header.v.free_buckets + 1) * sizeof(tdb_off_t);
831 tdb_brunlock(tdb, tdb->allrecord_lock.ltype,
832 tdb->header.v.hash_off, hash_size);
833 tdb_brunlock(tdb, tdb->allrecord_lock.ltype,
834 tdb->header.v.free_off, free_size);
835 tdb->allrecord_lock.count = 0;
836 tdb->allrecord_lock.ltype = 0;
839 for (i = 0; i<tdb->num_lockrecs; i++) {
840 struct tdb_lock_type *lck = &tdb->lockrecs[i];
842 tdb_brunlock(tdb, lck->ltype, lck->off, 1);
844 tdb->num_lockrecs = 0;
845 SAFE_FREE(tdb->lockrecs);
846 tdb->header_uptodate = false;