Function mqfs_destroy

freebsd/kern/uipc_mqueue.c:557–585

* Destroy a node or a tree of nodes */

 * Destroy a node or a tree of nodes
 */
static int
mqfs_destroy(struct mqfs_node *node)
{
	struct mqfs_node *parent;

	KASSERT(node != NULL,
	    ("%s(): node is NULL", __func__));
	KASSERT(node->mn_info != NULL,
	    ("%s(): node has no mn_info", __func__));

	/* destroy children */
	if (node->mn_type == mqfstype_dir || node->mn_type == mqfstype_root)
		while (! LIST_EMPTY(&node->mn_children))
			mqfs_destroy(LIST_FIRST(&node->mn_children));

	/* unlink from parent */
	if ((parent = node->mn_parent) != NULL) {
		KASSERT(parent->mn_info == node->mn_info,
		    ("%s(): parent has different mn_info", __func__));
		LIST_REMOVE(node, mn_sibling);
	}

	if (node->mn_fileno != 0)
		mqfs_fileno_free(node->mn_info, node);
	if (node->mn_data != NULL)
		mqueue_free(node->mn_data);
	mqnode_free(node);
	return (0);
}

/*
 * Mount a mqfs instance