int zone_tree_delete_empty_node(zone_tree_t *tree, zone_node_t *node)
{
if (!tree || !node) {
return KNOT_EINVAL;
}
if (node->rrset_count == 0 && node->children == 0) {
zone_node_t *parent_node = node->parent;
if (parent_node) {
parent_node->children--;
fix_wildcard_child(parent_node, node->owner);
if (parent_node->parent != NULL) { /* Is not apex */
// Recurse using the parent node, do not delete possibly empty parent.
int ret = zone_tree_delete_empty_node(tree, parent_node);
if (ret != KNOT_EOK) {
return ret;
}
}
}
// Delete node
zone_node_t *removed_node = NULL;
zone_tree_remove(tree, node->owner, &removed_node);
UNUSED(removed_node);
node_free(&node, NULL);
}
return KNOT_EOK;
}
/*----------------------------------------------------------------------------*/
int zone_contents_remove_node(zone_contents_t *contents, const knot_dname_t *owner)
{
if (contents == NULL || owner == NULL) {
return KNOT_EINVAL;
}
dbg_zone_exec_verb(
char *name = knot_dname_to_str_alloc(owner);
dbg_zone_verb("Removing zone node: %s\n", name);
free(name);
);
zone_node_t *removed_node = NULL;
int ret = zone_tree_remove(contents->nodes, owner, &removed_node);
if (ret != KNOT_EOK) {
return KNOT_ENONODE;
}
assert(removed_node);
return KNOT_EOK;
}
/*----------------------------------------------------------------------------*/
int zone_contents_remove_nsec3_node(zone_contents_t *contents, const knot_dname_t *owner)
{
if (contents == NULL || owner == NULL) {
return KNOT_EINVAL;
}