diff options
Diffstat (limited to 'source4/lib/tdb/common/lock.c')
| -rw-r--r-- | source4/lib/tdb/common/lock.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/source4/lib/tdb/common/lock.c b/source4/lib/tdb/common/lock.c index 72892febbd..706e801698 100644 --- a/source4/lib/tdb/common/lock.c +++ b/source4/lib/tdb/common/lock.c @@ -285,6 +285,41 @@ int tdb_unlock(struct tdb_context *tdb, int list, int ltype) return ret; } +/* + get the transaction lock + */ +int tdb_transaction_lock(struct tdb_context *tdb, int ltype) +{ + if (tdb->have_transaction_lock || tdb->global_lock.count) { + return 0; + } + if (tdb->methods->tdb_brlock(tdb, TRANSACTION_LOCK, ltype, + F_SETLKW, 0, 1) == -1) { + TDB_LOG((tdb, TDB_DEBUG_ERROR, "tdb_transaction_lock: failed to get transaction lock\n")); + tdb->ecode = TDB_ERR_LOCK; + return -1; + } + tdb->have_transaction_lock = 1; + return 0; +} + +/* + release the transaction lock + */ +int tdb_transaction_unlock(struct tdb_context *tdb) +{ + int ret; + if (!tdb->have_transaction_lock) { + return 0; + } + ret = tdb->methods->tdb_brlock(tdb, TRANSACTION_LOCK, F_UNLCK, F_SETLKW, 0, 1); + if (ret == 0) { + tdb->have_transaction_lock = 0; + } + return ret; +} + + /* lock/unlock entire database */ |