ctrl_node_t
extern ctrl_node_t *control_nodes;
ctrl_node_t *ctrl_node_p;
ctrl_node_p = (ctrl_node_t *)malloc(sizeof (ctrl_node_t));
ctrl_node_t *p;
extern ctrl_node_t *control_nodes;
ctrl_node_t *ctrl_node_p;
ctrl_node_t *control_nodes = NULL;