diff options
Diffstat (limited to 'contrib/bind9/lib/dns/db.c')
| -rw-r--r-- | contrib/bind9/lib/dns/db.c | 821 |
1 files changed, 0 insertions, 821 deletions
diff --git a/contrib/bind9/lib/dns/db.c b/contrib/bind9/lib/dns/db.c deleted file mode 100644 index 32ff6ae..0000000 --- a/contrib/bind9/lib/dns/db.c +++ /dev/null @@ -1,821 +0,0 @@ -/* - * Copyright (C) 2004, 2005 Internet Systems Consortium, Inc. ("ISC") - * Copyright (C) 1999-2001, 2003 Internet Software Consortium. - * - * Permission to use, copy, modify, and distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice appear in all copies. - * - * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH - * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY - * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT, - * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM - * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE - * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR - * PERFORMANCE OF THIS SOFTWARE. - */ - -/* $Id: db.c,v 1.74.18.6 2005/10/13 02:12:24 marka Exp $ */ - -/*! \file */ - -/*** - *** Imports - ***/ - -#include <config.h> - -#include <isc/buffer.h> -#include <isc/mem.h> -#include <isc/once.h> -#include <isc/rwlock.h> -#include <isc/string.h> -#include <isc/util.h> - -#include <dns/callbacks.h> -#include <dns/db.h> -#include <dns/log.h> -#include <dns/master.h> -#include <dns/rdata.h> -#include <dns/rdataset.h> -#include <dns/result.h> - -/*** - *** Private Types - ***/ - -struct dns_dbimplementation { - const char * name; - dns_dbcreatefunc_t create; - isc_mem_t * mctx; - void * driverarg; - ISC_LINK(dns_dbimplementation_t) link; -}; - -/*** - *** Supported DB Implementations Registry - ***/ - -/* - * Built in database implementations are registered here. - */ - -#include "rbtdb.h" -#include "rbtdb64.h" - -static ISC_LIST(dns_dbimplementation_t) implementations; -static isc_rwlock_t implock; -static isc_once_t once = ISC_ONCE_INIT; - -static dns_dbimplementation_t rbtimp; -static dns_dbimplementation_t rbt64imp; - -static void -initialize(void) { - RUNTIME_CHECK(isc_rwlock_init(&implock, 0, 0) == ISC_R_SUCCESS); - - rbtimp.name = "rbt"; - rbtimp.create = dns_rbtdb_create; - rbtimp.mctx = NULL; - rbtimp.driverarg = NULL; - ISC_LINK_INIT(&rbtimp, link); - - rbt64imp.name = "rbt64"; - rbt64imp.create = dns_rbtdb64_create; - rbt64imp.mctx = NULL; - rbt64imp.driverarg = NULL; - ISC_LINK_INIT(&rbt64imp, link); - - ISC_LIST_INIT(implementations); - ISC_LIST_APPEND(implementations, &rbtimp, link); - ISC_LIST_APPEND(implementations, &rbt64imp, link); -} - -static inline dns_dbimplementation_t * -impfind(const char *name) { - dns_dbimplementation_t *imp; - - for (imp = ISC_LIST_HEAD(implementations); - imp != NULL; - imp = ISC_LIST_NEXT(imp, link)) - if (strcasecmp(name, imp->name) == 0) - return (imp); - return (NULL); -} - - -/*** - *** Basic DB Methods - ***/ - -isc_result_t -dns_db_create(isc_mem_t *mctx, const char *db_type, dns_name_t *origin, - dns_dbtype_t type, dns_rdataclass_t rdclass, - unsigned int argc, char *argv[], dns_db_t **dbp) -{ - dns_dbimplementation_t *impinfo; - - RUNTIME_CHECK(isc_once_do(&once, initialize) == ISC_R_SUCCESS); - - /* - * Create a new database using implementation 'db_type'. - */ - - REQUIRE(dbp != NULL && *dbp == NULL); - REQUIRE(dns_name_isabsolute(origin)); - - RWLOCK(&implock, isc_rwlocktype_read); - impinfo = impfind(db_type); - if (impinfo != NULL) { - isc_result_t result; - result = ((impinfo->create)(mctx, origin, type, - rdclass, argc, argv, - impinfo->driverarg, dbp)); - RWUNLOCK(&implock, isc_rwlocktype_read); - return (result); - } - - RWUNLOCK(&implock, isc_rwlocktype_read); - - isc_log_write(dns_lctx, DNS_LOGCATEGORY_DATABASE, - DNS_LOGMODULE_DB, ISC_LOG_ERROR, - "unsupported database type '%s'", db_type); - - return (ISC_R_NOTFOUND); -} - -void -dns_db_attach(dns_db_t *source, dns_db_t **targetp) { - - /* - * Attach *targetp to source. - */ - - REQUIRE(DNS_DB_VALID(source)); - REQUIRE(targetp != NULL && *targetp == NULL); - - (source->methods->attach)(source, targetp); - - ENSURE(*targetp == source); -} - -void -dns_db_detach(dns_db_t **dbp) { - - /* - * Detach *dbp from its database. - */ - - REQUIRE(dbp != NULL); - REQUIRE(DNS_DB_VALID(*dbp)); - - ((*dbp)->methods->detach)(dbp); - - ENSURE(*dbp == NULL); -} - -isc_result_t -dns_db_ondestroy(dns_db_t *db, isc_task_t *task, isc_event_t **eventp) -{ - REQUIRE(DNS_DB_VALID(db)); - - return (isc_ondestroy_register(&db->ondest, task, eventp)); -} - - -isc_boolean_t -dns_db_iscache(dns_db_t *db) { - - /* - * Does 'db' have cache semantics? - */ - - REQUIRE(DNS_DB_VALID(db)); - - if ((db->attributes & DNS_DBATTR_CACHE) != 0) - return (ISC_TRUE); - - return (ISC_FALSE); -} - -isc_boolean_t -dns_db_iszone(dns_db_t *db) { - - /* - * Does 'db' have zone semantics? - */ - - REQUIRE(DNS_DB_VALID(db)); - - if ((db->attributes & (DNS_DBATTR_CACHE|DNS_DBATTR_STUB)) == 0) - return (ISC_TRUE); - - return (ISC_FALSE); -} - -isc_boolean_t -dns_db_isstub(dns_db_t *db) { - - /* - * Does 'db' have stub semantics? - */ - - REQUIRE(DNS_DB_VALID(db)); - - if ((db->attributes & DNS_DBATTR_STUB) != 0) - return (ISC_TRUE); - - return (ISC_FALSE); -} - -isc_boolean_t -dns_db_issecure(dns_db_t *db) { - - /* - * Is 'db' secure? - */ - - REQUIRE(DNS_DB_VALID(db)); - REQUIRE((db->attributes & DNS_DBATTR_CACHE) == 0); - - return ((db->methods->issecure)(db)); -} - -isc_boolean_t -dns_db_ispersistent(dns_db_t *db) { - - /* - * Is 'db' persistent? - */ - - REQUIRE(DNS_DB_VALID(db)); - - return ((db->methods->ispersistent)(db)); -} - -dns_name_t * -dns_db_origin(dns_db_t *db) { - /* - * The origin of the database. - */ - - REQUIRE(DNS_DB_VALID(db)); - - return (&db->origin); -} - -dns_rdataclass_t -dns_db_class(dns_db_t *db) { - /* - * The class of the database. - */ - - REQUIRE(DNS_DB_VALID(db)); - - return (db->rdclass); -} - -isc_result_t -dns_db_beginload(dns_db_t *db, dns_addrdatasetfunc_t *addp, - dns_dbload_t **dbloadp) { - /* - * Begin loading 'db'. - */ - - REQUIRE(DNS_DB_VALID(db)); - REQUIRE(addp != NULL && *addp == NULL); - REQUIRE(dbloadp != NULL && *dbloadp == NULL); - - return ((db->methods->beginload)(db, addp, dbloadp)); -} - -isc_result_t -dns_db_endload(dns_db_t *db, dns_dbload_t **dbloadp) { - /* - * Finish loading 'db'. - */ - - REQUIRE(DNS_DB_VALID(db)); - REQUIRE(dbloadp != NULL && *dbloadp != NULL); - - return ((db->methods->endload)(db, dbloadp)); -} - -isc_result_t -dns_db_load(dns_db_t *db, const char *filename) { - return (dns_db_load2(db, filename, dns_masterformat_text)); -} - -isc_result_t -dns_db_load2(dns_db_t *db, const char *filename, dns_masterformat_t format) { - isc_result_t result, eresult; - dns_rdatacallbacks_t callbacks; - unsigned int options = 0; - - /* - * Load master file 'filename' into 'db'. - */ - - REQUIRE(DNS_DB_VALID(db)); - - if ((db->attributes & DNS_DBATTR_CACHE) != 0) - options |= DNS_MASTER_AGETTL; - - dns_rdatacallbacks_init(&callbacks); - - result = dns_db_beginload(db, &callbacks.add, &callbacks.add_private); - if (result != ISC_R_SUCCESS) - return (result); - result = dns_master_loadfile2(filename, &db->origin, &db->origin, - db->rdclass, options, - &callbacks, db->mctx, format); - eresult = dns_db_endload(db, &callbacks.add_private); - /* - * We always call dns_db_endload(), but we only want to return its - * result if dns_master_loadfile() succeeded. If dns_master_loadfile() - * failed, we want to return the result code it gave us. - */ - if (eresult != ISC_R_SUCCESS && - (result == ISC_R_SUCCESS || result == DNS_R_SEENINCLUDE)) - result = eresult; - - return (result); -} - -isc_result_t -dns_db_dump(dns_db_t *db, dns_dbversion_t *version, const char *filename) { - return ((db->methods->dump)(db, version, filename, - dns_masterformat_text)); -} - -isc_result_t -dns_db_dump2(dns_db_t *db, dns_dbversion_t *version, const char *filename, - dns_masterformat_t masterformat) { - /* - * Dump 'db' into master file 'filename' in the 'masterformat' format. - * XXXJT: is it okay to modify the interface to the existing "dump" - * method? - */ - - REQUIRE(DNS_DB_VALID(db)); - - return ((db->methods->dump)(db, version, filename, masterformat)); -} - -/*** - *** Version Methods - ***/ - -void -dns_db_currentversion(dns_db_t *db, dns_dbversion_t **versionp) { - - /* - * Open the current version for reading. - */ - - REQUIRE(DNS_DB_VALID(db)); - REQUIRE((db->attributes & DNS_DBATTR_CACHE) == 0); - REQUIRE(versionp != NULL && *versionp == NULL); - - (db->methods->currentversion)(db, versionp); -} - -isc_result_t -dns_db_newversion(dns_db_t *db, dns_dbversion_t **versionp) { - - /* - * Open a new version for reading and writing. - */ - - REQUIRE(DNS_DB_VALID(db)); - REQUIRE((db->attributes & DNS_DBATTR_CACHE) == 0); - REQUIRE(versionp != NULL && *versionp == NULL); - - return ((db->methods->newversion)(db, versionp)); -} - -void -dns_db_attachversion(dns_db_t *db, dns_dbversion_t *source, - dns_dbversion_t **targetp) -{ - /* - * Attach '*targetp' to 'source'. - */ - - REQUIRE(DNS_DB_VALID(db)); - REQUIRE((db->attributes & DNS_DBATTR_CACHE) == 0); - REQUIRE(source != NULL); - REQUIRE(targetp != NULL && *targetp == NULL); - - (db->methods->attachversion)(db, source, targetp); - - ENSURE(*targetp != NULL); -} - -void -dns_db_closeversion(dns_db_t *db, dns_dbversion_t **versionp, - isc_boolean_t commit) -{ - - /* - * Close version '*versionp'. - */ - - REQUIRE(DNS_DB_VALID(db)); - REQUIRE((db->attributes & DNS_DBATTR_CACHE) == 0); - REQUIRE(versionp != NULL && *versionp != NULL); - - (db->methods->closeversion)(db, versionp, commit); - - ENSURE(*versionp == NULL); -} - -/*** - *** Node Methods - ***/ - -isc_result_t -dns_db_findnode(dns_db_t *db, dns_name_t *name, - isc_boolean_t create, dns_dbnode_t **nodep) -{ - - /* - * Find the node with name 'name'. - */ - - REQUIRE(DNS_DB_VALID(db)); - REQUIRE(nodep != NULL && *nodep == NULL); - - return ((db->methods->findnode)(db, name, create, nodep)); -} - -isc_result_t -dns_db_find(dns_db_t *db, dns_name_t *name, dns_dbversion_t *version, - dns_rdatatype_t type, unsigned int options, isc_stdtime_t now, - dns_dbnode_t **nodep, dns_name_t *foundname, - dns_rdataset_t *rdataset, dns_rdataset_t *sigrdataset) -{ - - /* - * Find the best match for 'name' and 'type' in version 'version' - * of 'db'. - */ - - REQUIRE(DNS_DB_VALID(db)); - REQUIRE(type != dns_rdatatype_rrsig); - REQUIRE(nodep == NULL || (nodep != NULL && *nodep == NULL)); - REQUIRE(dns_name_hasbuffer(foundname)); - REQUIRE(rdataset == NULL || - (DNS_RDATASET_VALID(rdataset) && - ! dns_rdataset_isassociated(rdataset))); - REQUIRE(sigrdataset == NULL || - (DNS_RDATASET_VALID(sigrdataset) && - ! dns_rdataset_isassociated(sigrdataset))); - - return ((db->methods->find)(db, name, version, type, options, now, - nodep, foundname, rdataset, sigrdataset)); -} - -isc_result_t -dns_db_findzonecut(dns_db_t *db, dns_name_t *name, - unsigned int options, isc_stdtime_t now, - dns_dbnode_t **nodep, dns_name_t *foundname, - dns_rdataset_t *rdataset, dns_rdataset_t *sigrdataset) -{ - /* - * Find the deepest known zonecut which encloses 'name' in 'db'. - */ - - REQUIRE(DNS_DB_VALID(db)); - REQUIRE((db->attributes & DNS_DBATTR_CACHE) != 0); - REQUIRE(nodep == NULL || (nodep != NULL && *nodep == NULL)); - REQUIRE(dns_name_hasbuffer(foundname)); - REQUIRE(sigrdataset == NULL || - (DNS_RDATASET_VALID(sigrdataset) && - ! dns_rdataset_isassociated(sigrdataset))); - - return ((db->methods->findzonecut)(db, name, options, now, nodep, - foundname, rdataset, sigrdataset)); -} - -void -dns_db_attachnode(dns_db_t *db, dns_dbnode_t *source, dns_dbnode_t **targetp) { - - /* - * Attach *targetp to source. - */ - - REQUIRE(DNS_DB_VALID(db)); - REQUIRE(source != NULL); - REQUIRE(targetp != NULL && *targetp == NULL); - - (db->methods->attachnode)(db, source, targetp); -} - -void -dns_db_detachnode(dns_db_t *db, dns_dbnode_t **nodep) { - - /* - * Detach *nodep from its node. - */ - - REQUIRE(DNS_DB_VALID(db)); - REQUIRE(nodep != NULL && *nodep != NULL); - - (db->methods->detachnode)(db, nodep); - - ENSURE(*nodep == NULL); -} - -isc_result_t -dns_db_expirenode(dns_db_t *db, dns_dbnode_t *node, isc_stdtime_t now) { - - /* - * Mark as stale all records at 'node' which expire at or before 'now'. - */ - - REQUIRE(DNS_DB_VALID(db)); - REQUIRE((db->attributes & DNS_DBATTR_CACHE) != 0); - REQUIRE(node != NULL); - - return ((db->methods->expirenode)(db, node, now)); -} - -void -dns_db_printnode(dns_db_t *db, dns_dbnode_t *node, FILE *out) { - /* - * Print a textual representation of the contents of the node to - * 'out'. - */ - - REQUIRE(DNS_DB_VALID(db)); - REQUIRE(node != NULL); - - (db->methods->printnode)(db, node, out); -} - -/*** - *** DB Iterator Creation - ***/ - -isc_result_t -dns_db_createiterator(dns_db_t *db, isc_boolean_t relative_names, - dns_dbiterator_t **iteratorp) -{ - /* - * Create an iterator for version 'version' of 'db'. - */ - - REQUIRE(DNS_DB_VALID(db)); - REQUIRE(iteratorp != NULL && *iteratorp == NULL); - - return (db->methods->createiterator(db, relative_names, iteratorp)); -} - -/*** - *** Rdataset Methods - ***/ - -isc_result_t -dns_db_findrdataset(dns_db_t *db, dns_dbnode_t *node, dns_dbversion_t *version, - dns_rdatatype_t type, dns_rdatatype_t covers, - isc_stdtime_t now, dns_rdataset_t *rdataset, - dns_rdataset_t *sigrdataset) -{ - /* - * Search for an rdataset of type 'type' at 'node' that are in version - * 'version' of 'db'. If found, make 'rdataset' refer to it. - */ - - REQUIRE(DNS_DB_VALID(db)); - REQUIRE(node != NULL); - REQUIRE(DNS_RDATASET_VALID(rdataset)); - REQUIRE(! dns_rdataset_isassociated(rdataset)); - REQUIRE(covers == 0 || type == dns_rdatatype_rrsig); - REQUIRE(type != dns_rdatatype_any); - REQUIRE(sigrdataset == NULL || - (DNS_RDATASET_VALID(sigrdataset) && - ! dns_rdataset_isassociated(sigrdataset))); - - return ((db->methods->findrdataset)(db, node, version, type, covers, - now, rdataset, sigrdataset)); -} - -isc_result_t -dns_db_allrdatasets(dns_db_t *db, dns_dbnode_t *node, dns_dbversion_t *version, - isc_stdtime_t now, dns_rdatasetiter_t **iteratorp) -{ - /* - * Make '*iteratorp' an rdataset iteratator for all rdatasets at - * 'node' in version 'version' of 'db'. - */ - - REQUIRE(DNS_DB_VALID(db)); - REQUIRE(iteratorp != NULL && *iteratorp == NULL); - - return ((db->methods->allrdatasets)(db, node, version, now, - iteratorp)); -} - -isc_result_t -dns_db_addrdataset(dns_db_t *db, dns_dbnode_t *node, dns_dbversion_t *version, - isc_stdtime_t now, dns_rdataset_t *rdataset, - unsigned int options, dns_rdataset_t *addedrdataset) -{ - /* - * Add 'rdataset' to 'node' in version 'version' of 'db'. - */ - - REQUIRE(DNS_DB_VALID(db)); - REQUIRE(node != NULL); - REQUIRE(((db->attributes & DNS_DBATTR_CACHE) == 0 && version != NULL)|| - ((db->attributes & DNS_DBATTR_CACHE) != 0 && - version == NULL && (options & DNS_DBADD_MERGE) == 0)); - REQUIRE((options & DNS_DBADD_EXACT) == 0 || - (options & DNS_DBADD_MERGE) != 0); - REQUIRE(DNS_RDATASET_VALID(rdataset)); - REQUIRE(dns_rdataset_isassociated(rdataset)); - REQUIRE(rdataset->rdclass == db->rdclass); - REQUIRE(addedrdataset == NULL || - (DNS_RDATASET_VALID(addedrdataset) && - ! dns_rdataset_isassociated(addedrdataset))); - - return ((db->methods->addrdataset)(db, node, version, now, rdataset, - options, addedrdataset)); -} - -isc_result_t -dns_db_subtractrdataset(dns_db_t *db, dns_dbnode_t *node, - dns_dbversion_t *version, dns_rdataset_t *rdataset, - unsigned int options, dns_rdataset_t *newrdataset) -{ - /* - * Remove any rdata in 'rdataset' from 'node' in version 'version' of - * 'db'. - */ - - REQUIRE(DNS_DB_VALID(db)); - REQUIRE(node != NULL); - REQUIRE((db->attributes & DNS_DBATTR_CACHE) == 0 && version != NULL); - REQUIRE(DNS_RDATASET_VALID(rdataset)); - REQUIRE(dns_rdataset_isassociated(rdataset)); - REQUIRE(rdataset->rdclass == db->rdclass); - REQUIRE(newrdataset == NULL || - (DNS_RDATASET_VALID(newrdataset) && - ! dns_rdataset_isassociated(newrdataset))); - - return ((db->methods->subtractrdataset)(db, node, version, rdataset, - options, newrdataset)); -} - -isc_result_t -dns_db_deleterdataset(dns_db_t *db, dns_dbnode_t *node, - dns_dbversion_t *version, dns_rdatatype_t type, - dns_rdatatype_t covers) -{ - /* - * Make it so that no rdataset of type 'type' exists at 'node' in - * version version 'version' of 'db'. - */ - - REQUIRE(DNS_DB_VALID(db)); - REQUIRE(node != NULL); - REQUIRE(((db->attributes & DNS_DBATTR_CACHE) == 0 && version != NULL)|| - ((db->attributes & DNS_DBATTR_CACHE) != 0 && version == NULL)); - - return ((db->methods->deleterdataset)(db, node, version, - type, covers)); -} - -void -dns_db_overmem(dns_db_t *db, isc_boolean_t overmem) { - - REQUIRE(DNS_DB_VALID(db)); - - (db->methods->overmem)(db, overmem); -} - -isc_result_t -dns_db_getsoaserial(dns_db_t *db, dns_dbversion_t *ver, isc_uint32_t *serialp) -{ - isc_result_t result; - dns_dbnode_t *node = NULL; - dns_rdataset_t rdataset; - dns_rdata_t rdata = DNS_RDATA_INIT; - isc_buffer_t buffer; - - REQUIRE(dns_db_iszone(db) || dns_db_isstub(db)); - - result = dns_db_findnode(db, dns_db_origin(db), ISC_FALSE, &node); - if (result != ISC_R_SUCCESS) - return (result); - - dns_rdataset_init(&rdataset); - result = dns_db_findrdataset(db, node, ver, dns_rdatatype_soa, 0, - (isc_stdtime_t)0, &rdataset, NULL); - if (result != ISC_R_SUCCESS) - goto freenode; - - result = dns_rdataset_first(&rdataset); - if (result != ISC_R_SUCCESS) - goto freerdataset; - dns_rdataset_current(&rdataset, &rdata); - result = dns_rdataset_next(&rdataset); - INSIST(result == ISC_R_NOMORE); - - INSIST(rdata.length > 20); - isc_buffer_init(&buffer, rdata.data, rdata.length); - isc_buffer_add(&buffer, rdata.length); - isc_buffer_forward(&buffer, rdata.length - 20); - *serialp = isc_buffer_getuint32(&buffer); - - result = ISC_R_SUCCESS; - - freerdataset: - dns_rdataset_disassociate(&rdataset); - - freenode: - dns_db_detachnode(db, &node); - return (result); -} - -unsigned int -dns_db_nodecount(dns_db_t *db) { - REQUIRE(DNS_DB_VALID(db)); - - return ((db->methods->nodecount)(db)); -} - -void -dns_db_settask(dns_db_t *db, isc_task_t *task) { - REQUIRE(DNS_DB_VALID(db)); - - (db->methods->settask)(db, task); -} - -isc_result_t -dns_db_register(const char *name, dns_dbcreatefunc_t create, void *driverarg, - isc_mem_t *mctx, dns_dbimplementation_t **dbimp) -{ - dns_dbimplementation_t *imp; - - REQUIRE(name != NULL); - REQUIRE(dbimp != NULL && *dbimp == NULL); - - RUNTIME_CHECK(isc_once_do(&once, initialize) == ISC_R_SUCCESS); - - RWLOCK(&implock, isc_rwlocktype_write); - imp = impfind(name); - if (imp != NULL) { - RWUNLOCK(&implock, isc_rwlocktype_write); - return (ISC_R_EXISTS); - } - - imp = isc_mem_get(mctx, sizeof(dns_dbimplementation_t)); - if (imp == NULL) { - RWUNLOCK(&implock, isc_rwlocktype_write); - return (ISC_R_NOMEMORY); - } - imp->name = name; - imp->create = create; - imp->mctx = NULL; - imp->driverarg = driverarg; - isc_mem_attach(mctx, &imp->mctx); - ISC_LINK_INIT(imp, link); - ISC_LIST_APPEND(implementations, imp, link); - RWUNLOCK(&implock, isc_rwlocktype_write); - - *dbimp = imp; - - return (ISC_R_SUCCESS); -} - -void -dns_db_unregister(dns_dbimplementation_t **dbimp) { - dns_dbimplementation_t *imp; - isc_mem_t *mctx; - - REQUIRE(dbimp != NULL && *dbimp != NULL); - - RUNTIME_CHECK(isc_once_do(&once, initialize) == ISC_R_SUCCESS); - - imp = *dbimp; - RWLOCK(&implock, isc_rwlocktype_write); - ISC_LIST_UNLINK(implementations, imp, link); - mctx = imp->mctx; - isc_mem_put(mctx, imp, sizeof(dns_dbimplementation_t)); - isc_mem_detach(&mctx); - RWUNLOCK(&implock, isc_rwlocktype_write); -} - -isc_result_t -dns_db_getoriginnode(dns_db_t *db, dns_dbnode_t **nodep) { - REQUIRE(DNS_DB_VALID(db)); - REQUIRE(dns_db_iszone(db) == ISC_TRUE); - REQUIRE(nodep != NULL && *nodep == NULL); - - if (db->methods->getoriginnode != NULL) - return ((db->methods->getoriginnode)(db, nodep)); - - return (ISC_R_NOTFOUND); -} |
