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| -rw-r--r-- | lib/dns/include/dns/dbtable.h | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/lib/dns/include/dns/dbtable.h b/lib/dns/include/dns/dbtable.h new file mode 100644 index 0000000..8f139b9 --- /dev/null +++ b/lib/dns/include/dns/dbtable.h @@ -0,0 +1,158 @@ +/* + * Copyright (C) Internet Systems Consortium, Inc. ("ISC") + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * See the COPYRIGHT file distributed with this work for additional + * information regarding copyright ownership. + */ + + +#ifndef DNS_DBTABLE_H +#define DNS_DBTABLE_H 1 + +/***** + ***** Module Info + *****/ + +/*! \file dns/dbtable.h + * \brief + * DNS DB Tables + * + * XXX TBS XXX + * + * MP: + *\li The module ensures appropriate synchronization of data structures it + * creates and manipulates. + * + * Reliability: + *\li No anticipated impact. + * + * Resources: + *\li None. + * + * Security: + *\li No anticipated impact. + * + * Standards: + *\li None. + */ + +#include <isc/lang.h> + +#include <dns/types.h> + +#define DNS_DBTABLEFIND_NOEXACT 0x01 + +ISC_LANG_BEGINDECLS + +isc_result_t +dns_dbtable_create(isc_mem_t *mctx, dns_rdataclass_t rdclass, + dns_dbtable_t **dbtablep); +/*%< + * Make a new dbtable of class 'rdclass' + * + * Requires: + *\li mctx != NULL + * \li dbtablep != NULL && *dptablep == NULL + *\li 'rdclass' is a valid class + * + * Returns: + *\li #ISC_R_SUCCESS + *\li #ISC_R_NOMEMORY + *\li #ISC_R_UNEXPECTED + */ + +void +dns_dbtable_attach(dns_dbtable_t *source, dns_dbtable_t **targetp); +/*%< + * Attach '*targetp' to 'source'. + * + * Requires: + * + *\li 'source' is a valid dbtable. + * + *\li 'targetp' points to a NULL dns_dbtable_t *. + * + * Ensures: + * + *\li *targetp is attached to source. + */ + +void +dns_dbtable_detach(dns_dbtable_t **dbtablep); +/*%< + * Detach *dbtablep from its dbtable. + * + * Requires: + * + *\li '*dbtablep' points to a valid dbtable. + * + * Ensures: + * + *\li *dbtablep is NULL. + * + *\li If '*dbtablep' is the last reference to the dbtable, + * all resources used by the dbtable will be freed + */ + +isc_result_t +dns_dbtable_add(dns_dbtable_t *dbtable, dns_db_t *db); +/*%< + * Add 'db' to 'dbtable'. + * + * Requires: + *\li 'dbtable' is a valid dbtable. + * + *\li 'db' is a valid database with the same class as 'dbtable' + */ + +void +dns_dbtable_remove(dns_dbtable_t *dbtable, dns_db_t *db); +/*%< + * Remove 'db' from 'dbtable'. + * + * Requires: + *\li 'db' was previously added to 'dbtable'. + */ + +void +dns_dbtable_adddefault(dns_dbtable_t *dbtable, dns_db_t *db); +/*%< + * Use 'db' as the result of a dns_dbtable_find() if no better match is + * available. + */ + +void +dns_dbtable_getdefault(dns_dbtable_t *dbtable, dns_db_t **db); +/*%< + * Get the 'db' used as the result of a dns_dbtable_find() + * if no better match is available. + */ + +void +dns_dbtable_removedefault(dns_dbtable_t *dbtable); +/*%< + * Remove the default db from 'dbtable'. + */ + +isc_result_t +dns_dbtable_find(dns_dbtable_t *dbtable, dns_name_t *name, + unsigned int options, dns_db_t **dbp); +/*%< + * Find the deepest match to 'name' in the dbtable, and return it + * + * Notes: + *\li If the DNS_DBTABLEFIND_NOEXACT option is set, the best partial + * match (if any) to 'name' will be returned. + * + * Returns: + * \li #ISC_R_SUCCESS on success + *\li something else: no default and match + */ + +ISC_LANG_ENDDECLS + +#endif /* DNS_DBTABLE_H */ |