tree_add_node
tree_add_node(&ft->node, &fs_prio->node);
tree_add_node(&handle->rule[i]->node, &fte->node);
tree_add_node(&handle->rule[i]->node, &fte->node);
tree_add_node(&fs_prio->node, &ns->node);
tree_add_node(&ns->node, &prio->node);
tree_add_node(&ns->node, NULL);
tree_add_node(&fte->node, &fg->node);
tree_add_node(&fg->node, &ft->node);