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r20947: fixed a bug in the unlock logic in the brlock tdb backend
I'm very surprised this didn't show up earlier!
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parent
53fd66340a
commit
5d9b1acf4f
@ -423,7 +423,7 @@ static NTSTATUS brl_tdb_unlock(struct brl_context *brl,
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{
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TDB_DATA kbuf, dbuf;
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int count, i;
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struct lock_struct *locks;
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struct lock_struct *locks, *lock;
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struct lock_context context;
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NTSTATUS status;
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@ -449,43 +449,59 @@ static NTSTATUS brl_tdb_unlock(struct brl_context *brl,
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count = dbuf.dsize / sizeof(*locks);
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for (i=0; i<count; i++) {
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struct lock_struct *lock = &locks[i];
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lock = &locks[i];
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if (brl_tdb_same_context(&lock->context, &context) &&
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lock->ntvfs == brlh->ntvfs &&
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lock->start == start &&
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lock->size == size &&
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lock->lock_type == WRITE_LOCK) {
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break;
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}
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}
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if (i < count) goto found;
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for (i=0; i<count; i++) {
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lock = &locks[i];
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if (brl_tdb_same_context(&lock->context, &context) &&
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lock->ntvfs == brlh->ntvfs &&
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lock->start == start &&
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lock->size == size &&
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lock->lock_type < PENDING_READ_LOCK) {
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/* found it - delete it */
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if (count == 1) {
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if (tdb_delete(brl->w->tdb, kbuf) != 0) {
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status = NT_STATUS_INTERNAL_DB_CORRUPTION;
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goto fail;
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}
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} else {
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struct lock_struct removed_lock = *lock;
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if (i < count-1) {
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memmove(&locks[i], &locks[i+1],
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sizeof(*locks)*((count-1) - i));
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}
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count--;
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/* send notifications for any relevant pending locks */
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brl_tdb_notify_unlock(brl, locks, count, &removed_lock);
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dbuf.dsize = count * sizeof(*locks);
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if (tdb_store(brl->w->tdb, kbuf, dbuf, TDB_REPLACE) != 0) {
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status = NT_STATUS_INTERNAL_DB_CORRUPTION;
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goto fail;
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}
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}
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free(dbuf.dptr);
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tdb_chainunlock(brl->w->tdb, kbuf);
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return NT_STATUS_OK;
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break;
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}
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}
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found:
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if (i < count) {
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/* found it - delete it */
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if (count == 1) {
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if (tdb_delete(brl->w->tdb, kbuf) != 0) {
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status = NT_STATUS_INTERNAL_DB_CORRUPTION;
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goto fail;
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}
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} else {
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struct lock_struct removed_lock = *lock;
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if (i < count-1) {
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memmove(&locks[i], &locks[i+1],
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sizeof(*locks)*((count-1) - i));
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}
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count--;
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/* send notifications for any relevant pending locks */
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brl_tdb_notify_unlock(brl, locks, count, &removed_lock);
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dbuf.dsize = count * sizeof(*locks);
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if (tdb_store(brl->w->tdb, kbuf, dbuf, TDB_REPLACE) != 0) {
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status = NT_STATUS_INTERNAL_DB_CORRUPTION;
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goto fail;
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}
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}
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free(dbuf.dptr);
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tdb_chainunlock(brl->w->tdb, kbuf);
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return NT_STATUS_OK;
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}
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/* we didn't find it */
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status = NT_STATUS_RANGE_NOT_LOCKED;
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