-{
- int i;
-
- if (tdb->transaction == NULL) {
- TDB_LOG((tdb, TDB_DEBUG_ERROR, "tdb_transaction_cancel: no transaction\n"));
- return -1;
- }
-
- if (tdb->transaction->nesting != 0) {
- tdb->transaction->transaction_error = 1;
- tdb->transaction->nesting--;
- return 0;
- }
-
- tdb->map_size = tdb->transaction->old_map_size;
-
- /* free all the transaction blocks */
- for (i=0;i<tdb->transaction->num_blocks;i++) {
- if (tdb->transaction->blocks[i] != NULL) {
- free(tdb->transaction->blocks[i]);
- }
- }
- SAFE_FREE(tdb->transaction->blocks);
-
- /* remove any global lock created during the transaction */
- if (tdb->global_lock.count != 0) {
- tdb_brlock(tdb, FREELIST_TOP, F_UNLCK, F_SETLKW, 0, 4*tdb->header.hash_size);
- tdb->global_lock.count = 0;
- }
-
- /* remove any locks created during the transaction */
- if (tdb->num_locks != 0) {
- for (i=0;i<tdb->num_lockrecs;i++) {
- tdb_brlock(tdb,FREELIST_TOP+4*tdb->lockrecs[i].list,
- F_UNLCK,F_SETLKW, 0, 1);
- }
- tdb->num_locks = 0;
- tdb->num_lockrecs = 0;
- SAFE_FREE(tdb->lockrecs);
- }
-
- /* restore the normal io methods */
- tdb->methods = tdb->transaction->io_methods;
-
- tdb_brlock(tdb, FREELIST_TOP, F_UNLCK, F_SETLKW, 0, 0);
- tdb_transaction_unlock(tdb);
- SAFE_FREE(tdb->transaction->hash_heads);
- SAFE_FREE(tdb->transaction);
-
- return 0;
-}
-
-/*
- sync to disk
-*/
-static int transaction_sync(struct tdb_context *tdb, tdb_off_t offset, tdb_len_t length)
-{
- if (fsync(tdb->fd) != 0) {
- tdb->ecode = TDB_ERR_IO;
- TDB_LOG((tdb, TDB_DEBUG_FATAL, "tdb_transaction: fsync failed\n"));
- return -1;
- }
-#ifdef MS_SYNC
- if (tdb->map_ptr) {
- tdb_off_t moffset = offset & ~(tdb->page_size-1);
- if (msync(moffset + (char *)tdb->map_ptr,
- length + (offset - moffset), MS_SYNC) != 0) {
- tdb->ecode = TDB_ERR_IO;
- TDB_LOG((tdb, TDB_DEBUG_FATAL, "tdb_transaction: msync failed - %s\n",
- strerror(errno)));
- return -1;
- }
- }
-#endif
- return 0;