diff options
Diffstat (limited to 'source4/lib/ldb/ldb_tdb/ldb_search.c')
| -rw-r--r-- | source4/lib/ldb/ldb_tdb/ldb_search.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/source4/lib/ldb/ldb_tdb/ldb_search.c b/source4/lib/ldb/ldb_tdb/ldb_search.c index fc864ac2ea..83079eab81 100644 --- a/source4/lib/ldb/ldb_tdb/ldb_search.c +++ b/source4/lib/ldb/ldb_tdb/ldb_search.c @@ -242,6 +242,42 @@ int ltdb_search_dn1(struct ldb_module *module, const struct ldb_dn *dn, struct l return 1; } +/* the lock key for search locking. Note that this is not a DN, its + just an arbitrary key to give to tdb. Also note that as we and + using transactions for all write operations and transactions take + care of their own locks, we don't need to do any locking anywhere + other than in ldb_search() */ +#define LDBLOCK "INT_LDBLOCK" + +/* + lock the database for read - use by ltdb_search +*/ +static int ltdb_lock_read(struct ldb_module *module) +{ + struct ltdb_private *ltdb = module->private_data; + TDB_DATA key; + + key.dptr = discard_const(LDBLOCK); + key.dsize = strlen(LDBLOCK); + + return tdb_chainlock_read(ltdb->tdb, key); +} + +/* + unlock the database after a ltdb_lock_read() +*/ +static int ltdb_unlock_read(struct ldb_module *module) +{ + struct ltdb_private *ltdb = module->private_data; + TDB_DATA key; + + key.dptr = discard_const(LDBLOCK); + key.dsize = strlen(LDBLOCK); + + return tdb_chainunlock_read(ltdb->tdb, key); +} + + /* search the database for a single simple dn |