543 purge_tree(struct sysctlnode *rnode)  in purge_tree()  argument
547 	if (rnode == NULL ||  in purge_tree()
548 	    SYSCTL_TYPE(rnode->sysctl_flags) != CTLTYPE_NODE ||  in purge_tree()
549 	    rnode->sysctl_child == NULL)  in purge_tree()
552 	for (node = rnode->sysctl_child;  in purge_tree()
553 	     node < &rnode->sysctl_child[rnode->sysctl_clen];  in purge_tree()
556 	free(rnode->sysctl_child);  in purge_tree()
557 	rnode->sysctl_csize = 0;  in purge_tree()
558 	rnode->sysctl_clen = 0;  in purge_tree()
559 	rnode->sysctl_child = NULL;  in purge_tree()
561 	if (rnode->sysctl_desc == (const char*)-1)  in purge_tree()
562 		rnode->sysctl_desc = NULL;  in purge_tree()
563 	if (rnode->sysctl_desc != NULL)  in purge_tree()
564 		free(__UNCONST(rnode->sysctl_desc));  in purge_tree()
565 	rnode->sysctl_desc = NULL;  in purge_tree()