s3:libsmb: Return a more sensible error if no interfaces are available

Signed-off-by: Jo Sutton <josutton@catalyst.net.nz>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>

diff --git a/source3/libsmb/namequery.c b/source3/libsmb/namequery.c
index 48210d92847d75b065a1e6f630b654fac38f711b..b1500b85e0bd31d7430c33369a0af445b520eb62 100644 (file)
--- a/source3/libsmb/namequery.c
+++ b/source3/libsmb/namequery.c
@@ -1909,6 +1909,14 @@ struct tevent_req *name_resolve_bcast_send(TALLOC_CTX *mem_ctx,
                  "for name %s<0x%x>\n", name, name_type));
 
        num_addrs = iface_count();
+       if (num_addrs == 0) {
+               DBG_INFO("name_resolve_bcast(%s#%02x): no interfaces are available\n",
+                        name,
+                        name_type);
+               tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
+               return tevent_req_post(req, ev);
+       }
+
        bcast_addrs = talloc_array(state, struct sockaddr_storage, num_addrs);
        if (tevent_req_nomem(bcast_addrs, req)) {
                return tevent_req_post(req, ev);