Data Structures

Here are the data structures with brief descriptions:

Cacl_addr	An address span with access control information
Cacl_list	Access control storage structure
Caddr_action
Caddr_data
Caddr_tree_node	Tree of IP addresses
Caddredge
Caddrnode
Caddrtree
Calgo_needs	Storage for algorithm needs
Calloc_cache	Structure that provides allocation
Cauth_addr	List of addresses
Cauth_chunk	Auth zone master zone transfer data chunk
Cauth_data	Auth data
Cauth_master	Auth zone master upstream, and the config settings for it
Cauth_nextprobe	The next probe task
Cauth_probe	The probe task
Cauth_rrset	A auth data RRset
Cauth_transfer	The transfer task
Cauth_xfer	Authoritative zone transfer structure
Cauth_zone	Auth zone
Cauth_zones	Authoritative zones, shared
Cautr_global_data	Autotrust global metadata
Cautr_point_data	Autotrust metadata for a trust point
Cautr_ta	Autotrust metadata for one trust anchor key
Ccachedb_backend	Backend call routines
Ccachedb_env	The global variable environment contents for the cachedb Shared between threads, this represents long term information
Ccachedb_qstate	Per query state for the cachedb module
Ccanon_rr	RR entries in a canonical sorted tree of RRs
Ccb_pair
Cce_response	Closest encloser (ce) proof results Contains the ce and the next-closer (nc) proof
Ccheck_request_result	Structure holding the result of the worker_check_request function
Cclientip_synthesized_rr
Cclientip_synthesized_rrset
Ccodeline	The allocation statistics block
Ccomm_base	A communication point dispatcher
Ccomm_point	Communication point to the network These behaviours can be accomplished by setting the flags and passing return values from the callback
Ccomm_reply	Reply information for a communication point
Ccomm_signal	Structure only for signal events
Ccomm_timer	Structure only for making timeout events
Ccompress_tree_node	Data structure to help domain name compression in outgoing messages
Cconfig_auth	Auth config options
Cconfig_collate_arg	Collate func arg
Cconfig_file	The configuration options
Cconfig_parser_state	Used during options parsing
Cconfig_str2list	List of two strings for config options
Cconfig_str3list	List of three strings for config options
Cconfig_strbytelist	List of string, bytestring for config options
Cconfig_strlist	List of strings for config options
Cconfig_strlist_head	List head for strlist processing, used for append operation
Cconfig_stub	Stub config options
Cconfig_view	View config options
Ccookie_secret
Ccookie_secrets	The cookie secrets from the cookie-secret-file
Cctx_query	The queries outstanding for the libunbound resolver
Cdaemon	Structure holding worker list
Cdaemon_remote	The remote control tool state
Cdel_info	Local info for deletion functions
Cdelegpt	Delegation Point
Cdelegpt_addr	Address of target nameserver in delegation point
Cdelegpt_ns	Nameservers for a delegation point
Cdns64_env	This structure contains module configuration information
Cdns64_qstate	Per-query module-specific state
Cdns_msg	Region allocated message reply
Cdomain_limit_data	Ratelimit settings for domains
Cdoq_addr_storage	DoQ socket address storage for IP4 or IP6 address
Cdoq_pkt_addr	DoQ packet address information
Cdoq_server_socket	The DoQ server socket information, for DNS over QUIC
Cdt_frame_read_buf	Containing buffer and counter for reading DNSTAP frames
Cdt_io_list_item	IO thread list of queues list item lists a worker queue that should be looked at and sent to the log server
Cdt_io_thread	IO thread that reads from the queues and writes them
Cdt_msg_entry	An entry in the dt_msg_queue
Cdt_msg_queue	A message buffer with dnstap messages queued up
Cdynlibmod_env
Cecs_data	ECS option
Cecs_whitelist	Ecs_whitelist structure
Cedns_data	EDNS data storage rdata is parsed in a list (has accessor functions)
Cedns_known_option	Known edns option
Cedns_option	EDNS option
Cedns_string_addr	EDNS string
Cedns_strings	Structure containing all EDNS strings
Centry	Data structure to keep the canned queries in
Cerrinf_strlist
Cext_thr_info	Struct for extended thread info
Cfake_commpoint	Fake commpoint, stores information
Cfake_pending	Pending queries to network, fake replay version
Cfake_timer	Timers with callbacks, fake replay version
Cfast_reload_auth_change	Fast reload auth zone change
Cfast_reload_construct	Structure with constructed elements for use during fast reload
Cfast_reload_printq	Fast reload printout queue
Cfast_reload_thread	Fast reload thread structure
Chttp2_session	HTTP2 session
Chttp2_stream	HTTP stream
Cinfra_arg	Structure for argument data for dump infra host
Cinfra_cache	Infra cache
Cinfra_data	Host information encompasses host capabilities and retransmission timeouts
Cinfra_key	Host information kept for every server, per zone
Cinplace_cb	Inplace callback list of registered routines to be called
Cinternal_base	Internal base structure, so that every thread has its own events
Cinternal_event	The internal event structure for keeping ub_event info for the event
Cinternal_signal	Internal signal structure, to store signal event in
Cinternal_timer	Internal timer structure, to store timer event in
Cip_list	List of IP addresses
Cip_rate_key	Key for ip_ratelimit lookups, a source IP
Cipsecmod_env	The global variable environment contents for the ipsecmod Shared between threads, this represents long term information
Cipsecmod_qstate	Per query state for the ipsecmod module
Cipset_env
Cipset_qstate
Citer_donotq	Iterator donotqueryaddresses structure
Citer_env	Global state for the iterator
Citer_forward_zone	Iterator forward servers for a particular zone
Citer_forwards	Iterator forward zones structure
Citer_hints	Iterator hints structure
Citer_hints_stub	Iterator hints for a particular stub
Citer_nat64	Iterator global state for nat64
Citer_prep_list	List of prepend items
Citer_priv	Iterator priv structure
Citer_qstate	Per query state for the iterator module
Ckey_cache	Key cache
Ckey_entry_data	Key entry for the validator
Ckey_entry_key	A key entry for the validator
Ckeysets	Key settings
Clibworker	The library-worker status structure Internal to the worker
Clisten_dnsport	Listening for queries structure
Clisten_list	Single linked list to store event points
Clisten_port	Single linked list to store shared ports that have been opened for use by all threads
Clocal_data	Local data
Clocal_rrset	A local data RRset
Clocal_zone	Local zone
Clocal_zone_override	Local zone override information
Clocal_zones	Authoritative local zones storage, shared
Clock_ref	Reference to a lock in a rbtree set
Clookinfo	Result list for the lookups
Clruhash	Hash table that keeps LRU list of entries
Clruhash_bin	A single bin with a linked list of entries in it
Clruhash_entry	An entry into the hash table
Cmain_tap_data	Main tap callback data
Cmatched_delegation_point
Cmesh_area	Mesh of query states
Cmesh_cb	Callback to result routine
Cmesh_reply	Reply to a client
Cmesh_state	A mesh query state Unique per qname, qtype, qclass (from the qstate)
Cmesh_state_ref	Rbtree reference to a mesh_state
Cmodule_env	Module environment
Cmodule_func_block	Module functionality block
Cmodule_qstate	Module state, per query
Cmodule_stack	Stack of modules
Cmsg_parse	Data stored in scratch pad memory during parsing
Cmsgreply_entry	Structure to keep hash table entry for message replies
Cmy_event
Cmy_event_base
Cname_tree_node	Tree of domain names
Cnonce_cache_key
Cnsec3_cache_table	Cache table for NSEC3 hashes
Cnsec3_cached_hash	The NSEC3 hash result storage
Cnsec3_filter	Filter conditions for NSEC3 proof Used to iterate over the applicable NSEC3 RRs
Corder_id	Keep track of lock id in lock-verify application
Corder_lock	Lock
Coutbound_entry	Outbound list entry
Coutbound_list	The outbound list
Coutside_network	Send queries to outside servers and wait for answers from servers
Cpacked_rrset	An RRset can be represented using both key and data together
Cpacked_rrset_data	RRset data
Cpacked_rrset_key	The identifying information for an RRset
Cpacked_rrset_list	List of packed rrsets
Cpending	A query that has an answer pending for it
Cpending_tcp	Pending TCP query to server
Cperfinfo	Global info for perf
Cperfio	I/O port for perf
Cport_comm	Outgoing commpoint for UDP port
Cport_if	Outgoing interface
Cpp2_header	PROXYv2 header
Cproxy	List of proxy fds that return replies from the server to our clients
Cproxy_protocol_data	Internal struct initialized with function pointers for writing uint16 and uint32
Cproxy_protocol_lookup_table	Internal lookup table; could be further generic like sldns_lookup_table for all the future generic stuff
Cpythonmod_env	Global state for the module
Cpythonmod_qstate	Per query state for the iterator module
Cq_ans	Struct for query and answer checks
Cquery_info	Structure to store query information that makes answers to queries different
Crate_data	Data for ratelimits per domain name It is incremented when a non-cache-lookup happens for that domain name
Crate_key	Key for ratelimit lookups, a domain name
Cratelimit_list_arg	Struct for user arg ratelimit list
Crbnode_type	The rbnode_type struct definition
Crbtree_type	Definition for tree struct
Crc_state	Busy control command connection, SSL state
Cregional	Regional* is the first block*
Cremote_stream	Connection to print to, either SSL or plain over fd
Creplay_answer	An answer that is pending to happen
Creplay_moment	A replay moment
Creplay_range	Range of timesteps, and canned replies to matching queries
Creplay_runtime	Replay storage of runtime information
Creplay_scenario	A replay scenario
Creplay_var	Replay macro variable
Creply_info	Structure to store DNS query and the reply packet
Creply_packet	Struct to keep a linked list of reply packets for a query
Cresp_addr	An address span with response control information
Crespip_action_info	Data items representing the result of response-ip processing
Crespip_addr_info	Subset of resp_addr.node, used for inform-variant logging
Crespip_client_info	Client-specific attributes that can affect IP-based actions
Crespip_qstate	Per query state for the response-ip module
Crespip_set	Conceptual set of IP addresses for response AAAA or A records that should trigger special actions
Creuse_tcp	Reuse TCP connection, still open can be used again
Cringbuf	The ring buffer
Crpz	RPZ containing policies
Crr_parse	Data stored for an RR during parsing
Crrset_cache	The rrset cache Thin wrapper around hashtable, like a typedef
Crrset_parse	Data stored for an rrset during parsing
Crrset_ref	Information to reference an rrset
Crtt_info	RTT information
Cserve_expired_data	Struct to hold relevant data for serve expired
Cservice_callback	Callback to party interested in serviced query results
Cserviced_query	Query service record
Cshared_secret_cache_key
Cshm_main_info	The SHM info
CSignedCert
Cslab_test_thr	Structure to threaded test the lru hash table
Cslabhash	Hash table formed from several smaller ones
Cslabhash_testdata	Test structure contains test data
Cslabhash_testkey	Test structure contains test key
Csldns_buffer	Implementation of buffers to ease operations
Csldns_file_parse_state	Wire parse state for parsing files
Csldns_struct_lookup_table	A general purpose lookup table
Csldns_struct_rr_descriptor	Contains all information about resource record types
Csock_list	Linked list of sockaddrs May be allocated such that only 'len' bytes of addr exist for the structure
Cstop_flush_info	Structure to keep track of information during stop flush
Csubnet_env	Global state for the subnet module
Csubnet_msg_cache_data
Csubnet_qstate
Cta_key	Trust anchor key
Ctap_data	Tap callback variables
Ctap_data_list
Ctap_socket	Tap socket
Ctap_socket_list	List of sockets
Ctcl_addr	An address span with connection limit information
Ctcl_list	TCP connection limit storage structure
Ctcp_proxy	List of TCP proxy fd pairs to TCP connect client to server
Ctcp_req_done_item	List of done items in TCP channel
Ctcp_req_info	TCP request info
Ctcp_req_open_item	List of open items in TCP channel
Ctcp_send_list	An item that has to be TCP relayed
Ctest_thr	Structure to threaded test the lru hash table
Cth_buck	Bucket of time history information
Ctimehist	Keep histogram of time values
Ctrack_id	Keeping track of the async ids
Ctrust_anchor	A trust anchor in the trust anchor store
Ctube	A pipe
Ctube_res_list	List of results (arbitrary command serializations) to write back
Cub_ctx	The context structure
Cub_event	An "object" comprising a user defined pluggable event
Cub_event_base	A user defined pluggable event base is registered by providing a ub_event_base "object" with the ub_ctx_create_ub_event() function
Cub_event_base_vmt	The Virtual Method Table for and ub_event_base "object"
Cub_event_vmt	The Virtual Method Table for and ub_event "object"
Cub_packed_rrset_key	This structure contains an RRset
Cub_result	The validation and resolution results
Cub_server_stats	Per worker statistics
Cub_shm_stat_info	Some global statistics that are not in struct stats_info, this struct is shared on a shm segment (shm-key in unbound.conf)
Cub_stats_info	Statistics to send over the control pipe when asked This struct is made to be memcopied, sent in binary
Cunbound_socket
Cval_anchors	Trust anchor store
Cval_env	Global state for the validator
Cval_neg_cache	The negative cache
Cval_neg_data	Data element for aggressive negative caching
Cval_neg_zone	Per Zone aggressive negative caching data
Cval_qstate	Per query state for the validator module
Cview	View
Cviews	Views storage, shared
Cwait_limit_netblock_info	Data to store the configuration per netblock for the wait limit
Cwaiting_tcp	Query waiting for TCP buffer
Cworker	Structure holding working information for unbound
Cxml_data	XML parse private data during the parse