Set and check cursor surface role

types/wlr_output.c

@@ -198,6 +198,10 @@ static void handle_cursor_surface_destroy(struct wl_listener *listener,
 
 void wlr_output_set_cursor_surface(struct wlr_output *output,
 		struct wlr_surface *surface, int32_t hotspot_x, int32_t hotspot_y) {
+	if (strcmp(surface->role, "cursor") != 0) {
+		return;
+	}
+
 	output->cursor.hotspot_x = hotspot_x;
 	output->cursor.hotspot_y = hotspot_y;
 

types/wlr_seat.c

@@ -27,6 +27,11 @@ static void wl_pointer_set_cursor(struct wl_client *client,
 	struct wlr_surface *surface = NULL;
 	if (surface_resource != NULL) {
 		surface = wl_resource_get_user_data(surface_resource);
+
+		if (wlr_surface_set_role(surface, "cursor", resource,
+				WL_POINTER_ERROR_ROLE) < 0) {
+			return;
+		}
 	}
 
 	struct wlr_seat_pointer_request_set_cursor_event *event =