1 files changed, 51 insertions, 0 deletions
diff --git a/contrib/bind/doc/notes/data b/contrib/bind/doc/notes/data
new file mode 100644
index 0000000..e522392
--- /dev/null
+++ b/contrib/bind/doc/notes/data
@@ -0,0 +1,51 @@
+/*
+ * We need a registy of name server addresses.  For each, we retain an RTT
+ * and a list of name server names which have used this address.
+ */
+tree_t	*by_nsaddr;
+struct by_nsaddr {
+	u_int32_t	rtt;		/* measured. */
+	char		**names;	/* NULL terminated array; strdup'd. */
+};
+
+/*
+ * "struct server" is a name server, which can have many addresses.  There
+ * is no central registry of servers, since each creator can have a different
+ * idea of what the addresses are.
+ */
+struct server {
+	char		*name;		/* made with strdup. */
+	struct sockaddr_in *addrs;	/* counted array. */
+	int		n_addrs;	/* array size. */
+};
+
+/*
+ * "struct zone" is a zone cut.
+ */
+tree_t	*by_class;	/* zone[class]. */
+struct zone {
+	enum {master, slave, cache, boot}
+			type;
+
+	/* Servers learned from boot cache, a parent zone, or !auth answer. */
+	struct server	*servers_notauth;
+
+	/* Servers learned from authoritative answer or local zone. */
+	struct server	*servers_auth;
+
+	/* Root node of zone. */
+	struct node	*root;
+};
+
+struct node {
+	char		*label;		/* made with strdup. */
+	tree_t		*subs;		/* subdomains (node[label]). */
+	/* really this is "data" since for the zone cut tree we have no sets.*/
+	tree_t		*rrsets;	/* rr sets (rrset[type]). */
+};
+
+struct rrset {
+	rrtype		type;
+	u_int32_t	ttl;
+	u_char		data[1];	/* struct size constrains this. */
+};