s3:idmap_tdb: prevent opening the idmap db more than once.

diff --git a/source3/winbindd/idmap_tdb.c b/source3/winbindd/idmap_tdb.c
index 831db9d05c390bd1d47673a9d50f4db627a1c5e9..ec5be5d32ef76a5417b7715b1d69fc80e0ecf317 100644 (file)
--- a/source3/winbindd/idmap_tdb.c
+++ b/source3/winbindd/idmap_tdb.c
@@ -269,6 +269,11 @@ static NTSTATUS idmap_tdb_open_db(struct idmap_domain *dom)
 
        ctx = talloc_get_type(dom->private_data, struct idmap_tdb_context);
 
+       if (ctx->db) {
+               /* it is already open */
+               return NT_STATUS_OK;
+       }
+
        /* use our own context here */
        mem_ctx = talloc_stackframe();