s3-samr: fix _QueryDisplayInformation r->out.returned_size.

*r->out.returned_size needs to be 0 if nothing was enumerated.

Found by RPC-SAMR torture test.

Guenther

diff --git a/source3/rpc_server/srv_samr_nt.c b/source3/rpc_server/srv_samr_nt.c
index 6e990a319fb4055dfabd0134fd2012deb8ff904d..e2f65ae322fc6ed14e3881cd362218973b3dbeac 100644 (file)
--- a/source3/rpc_server/srv_samr_nt.c
+++ b/source3/rpc_server/srv_samr_nt.c
@@ -1603,7 +1603,7 @@ NTSTATUS _samr_QueryDisplayInfo(pipes_struct *p,
        DEBUG(5, ("_samr_QueryDisplayInfo: %d\n", __LINE__));
 
        *r->out.total_size = num_account * struct_size;
-       *r->out.returned_size = temp_size;
+       *r->out.returned_size = num_account ? temp_size : 0;
 
        return status;
 }