808. [func] Add 'rndc flush' to flush the server's cache.

CHANGES

@@ -1,4 +1,6 @@
 
+ 808.	[func]		Add 'rndc flush' to flush the server's cache.
+
  807.	[bug]		When setting up TCP connections for incoming zone
 			transfers, the transfer-source port was not
 			ignored like it should be.

bin/named/control.c

@@ -15,7 +15,7 @@
  * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
-/* $Id: control.c,v 1.2 2001/04/10 21:50:40 bwelling Exp $ */
+/* $Id: control.c,v 1.3 2001/04/11 20:37:33 bwelling Exp $ */
 
 #include <config.h>
 
@@ -109,6 +109,8 @@ ns_control_docommand(isccc_sexpr_t *message) {
 		ns_g_debuglevel = 0;
 		isc_log_setdebuglevel(ns_g_lctx, ns_g_debuglevel);
 		result = ISC_R_SUCCESS;
+	} else if (command_compare(command, NS_COMMAND_FLUSH)) {
+		result = ns_server_flushcache(ns_g_server);
 	} else {
 		isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
 			      NS_LOGMODULE_CONTROL, ISC_LOG_WARNING,

bin/named/include/named/control.h

@@ -15,7 +15,7 @@
  * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
-/* $Id: control.h,v 1.2 2001/04/10 21:50:45 bwelling Exp $ */
+/* $Id: control.h,v 1.3 2001/04/11 20:37:36 bwelling Exp $ */
 
 #ifndef NAMED_CONTROL_H
 #define NAMED_CONTROL_H 1
@@ -37,6 +37,7 @@
 #define NS_COMMAND_DUMPDB	"dumpdb"
 #define NS_COMMAND_TRACE	"trace"
 #define NS_COMMAND_NOTRACE	"notrace"
+#define NS_COMMAND_FLUSH	"flush"
 
 isc_result_t
 ns_control_init(void);

bin/named/include/named/server.h

@@ -15,7 +15,7 @@
  * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
-/* $Id: server.h,v 1.52 2001/02/14 03:50:08 gson Exp $ */
+/* $Id: server.h,v 1.53 2001/04/11 20:37:37 bwelling Exp $ */
 
 #ifndef NAMED_SERVER_H
 #define NAMED_SERVER_H 1
@@ -148,4 +148,10 @@ ns_server_dumpdb(ns_server_t *server);
 isc_result_t
 ns_server_setdebuglevel(ns_server_t *server, char *args);
 
+/*
+ * Flush the server's cache(s)
+ */
+isc_result_t
+ns_server_flushcache(ns_server_t *server);
+
 #endif /* NAMED_SERVER_H */

bin/named/server.c

@@ -15,7 +15,7 @@
  * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
-/* $Id: server.c,v 1.315 2001/03/29 04:25:59 gson Exp $ */
+/* $Id: server.c,v 1.316 2001/04/11 20:37:34 bwelling Exp $ */
 
 #include <config.h>
 
@@ -2685,3 +2685,24 @@ ns_server_setdebuglevel(ns_server_t *server, char *args) {
 	isc_log_setdebuglevel(ns_g_lctx, ns_g_debuglevel);
 	return (ISC_R_SUCCESS);
 }
+
+isc_result_t
+ns_server_flushcache(ns_server_t *server) {
+	dns_view_t *view;
+	isc_result_t result;
+
+	result = isc_task_beginexclusive(server->task);
+	RUNTIME_CHECK(result == ISC_R_SUCCESS);
+	for (view = ISC_LIST_HEAD(server->viewlist);
+	     view != NULL;
+	     view = ISC_LIST_NEXT(view, link))
+	{
+		result = dns_view_flushcache(view);
+		if (result != ISC_R_SUCCESS)
+			goto out;
+	}
+	result = ISC_R_SUCCESS;
+ out:
+	isc_task_endexclusive(server->task);	
+	return (result);
+}

bin/rndc/rndc.c

@@ -15,7 +15,7 @@
  * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
-/* $Id: rndc.c,v 1.52 2001/04/10 22:00:41 bwelling Exp $ */
+/* $Id: rndc.c,v 1.53 2001/04/11 20:37:39 bwelling Exp $ */
 
 /*
  * Principal Author: DCL
@@ -110,6 +110,7 @@ command is one of the following:\n\
   trace		Increment debugging level by one.\n\
   trace level	Change the debugging level.\n\
   notrace	Set debugging level to 0.\n\
+  flush		Flushes the server's cache.\n\
   *status	Display ps(1) status of named.\n\
   *restart	Restart the server.\n\
 \n\

lib/dns/adb.c

@@ -15,7 +15,7 @@
  * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
-/* $Id: adb.c,v 1.173 2001/04/10 00:18:27 gson Exp $ */
+/* $Id: adb.c,v 1.174 2001/04/11 20:37:40 bwelling Exp $ */
 
 /*
  * Implementation notes
@@ -4008,3 +4008,26 @@ dns_adb_freeaddrinfo(dns_adb_t *adb, dns_adbaddrinfo_t **addrp) {
 		UNLOCK(&adb->lock);
 	}
 }
+
+void
+dns_adb_flush(dns_adb_t *adb) {
+	unsigned int i;
+
+	INSIST(DNS_ADB_VALID(adb));
+
+	LOCK(&adb->lock);
+
+	for (i = 0 ; i < NBUCKETS ; i++) {
+		/*
+		 * Call our cleanup routines.
+		 */
+		cleanup_names(adb, i, INT_MAX);
+		cleanup_entries(adb, i, INT_MAX);
+	}
+
+#ifdef DUMP_ADB_AFTER_CLEANING
+	dump_adb(adb, stdout, ISC_TRUE);
+#endif
+
+	UNLOCK(&adb->lock);
+}

lib/dns/cache.c

@@ -15,7 +15,7 @@
  * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
-/* $Id: cache.c,v 1.35 2001/03/08 01:22:48 tale Exp $ */
+/* $Id: cache.c,v 1.36 2001/04/11 20:37:42 bwelling Exp $ */
 
 #include <config.h>
 
@@ -97,6 +97,9 @@ struct dns_cache {
 	dns_rdataclass_t	rdclass;
 	dns_db_t		*db;
 	cache_cleaner_t		cleaner;
+	char			*db_type;
+	int			db_argc;
+	char			**db_argv;
 
 	/* Locked by 'filelock'. */
 	char *			filename;
@@ -124,6 +127,13 @@ cleaner_shutdown_action(isc_task_t *task, isc_event_t *event);
 static void
 overmem_cleaning_action(isc_task_t *task, isc_event_t *event);
 
+static inline isc_result_t
+cache_create_db(dns_cache_t *cache, dns_db_t **db) {
+	return (dns_db_create(cache->mctx, cache->db_type, dns_rootname,
+			      dns_dbtype_cache, cache->rdclass,
+			      cache->db_argc, cache->db_argv, db));
+}
+
 isc_result_t
 dns_cache_create(isc_mem_t *mctx, isc_taskmgr_t *taskmgr,
 		 isc_timermgr_t *timermgr, dns_rdataclass_t rdclass,
@@ -132,6 +142,7 @@ dns_cache_create(isc_mem_t *mctx, isc_taskmgr_t *taskmgr,
 {
 	isc_result_t result;
 	dns_cache_t *cache;
+	int i;
 
 	REQUIRE(cachep != NULL);
 	REQUIRE(*cachep == NULL);
@@ -166,12 +177,37 @@ dns_cache_create(isc_mem_t *mctx, isc_taskmgr_t *taskmgr,
 	cache->live_tasks = 0;
 	cache->rdclass = rdclass;
 
-	cache->db = NULL;
+	cache->db_type = isc_mem_strdup(mctx, db_type);
-	result = dns_db_create(cache->mctx, db_type, dns_rootname,
+	if (cache->db_type == NULL) {
-			       dns_dbtype_cache, rdclass, db_argc, db_argv,
+		result = ISC_R_NOMEMORY;
-			       &cache->db);
-	if (result != ISC_R_SUCCESS)
 		goto cleanup_filelock;
+	}
+
+	cache->db_argc = db_argc;
+	if (cache->db_argc == 0)
+		cache->db_argv = NULL;
+	else {
+		cache->db_argv = isc_mem_get(mctx,
+					     cache->db_argc * sizeof(char *));
+		if (cache->db_argv == NULL) {
+			result = ISC_R_NOMEMORY;
+			goto cleanup_dbtype;
+		}
+		for (i = 0; i < cache->db_argc; i++)
+			cache->db_argv[i] = NULL;
+		for (i = 0; i < cache->db_argc; i++) {
+			cache->db_argv[i] = isc_mem_strdup(mctx, db_argv[i]);
+			if (cache->db_argv[i] == NULL) {
+				result = ISC_R_NOMEMORY;
+				goto cleanup_dbargv;
+			}
+		}
+	}
+
+	cache->db = NULL;
+	result = cache_create_db(cache, &cache->db);
+	if (result != ISC_R_SUCCESS)
+		goto cleanup_dbargv;
 
 	cache->filename = NULL;
 
@@ -187,6 +223,13 @@ dns_cache_create(isc_mem_t *mctx, isc_taskmgr_t *taskmgr,
 
  cleanup_db:
 	dns_db_detach(&cache->db);
+ cleanup_dbargv:
+	for (i = 0; i < cache->db_argc; i++)
+		if (cache->db_argv[i] != NULL)
+			isc_mem_free(mctx, cache->db_argv[i]);
+	isc_mem_put(mctx, cache->db_argv, cache->db_argc * sizeof(char *));
+ cleanup_dbtype:
+	isc_mem_free(mctx, cache->db_type);
  cleanup_filelock:
 	DESTROYLOCK(&cache->filelock);
  cleanup_lock:
@@ -200,6 +243,7 @@ dns_cache_create(isc_mem_t *mctx, isc_taskmgr_t *taskmgr,
 static void
 cache_free(dns_cache_t *cache) {
 	isc_mem_t *mctx;
+	int i;
 
 	REQUIRE(VALID_CACHE(cache));
 	REQUIRE(cache->references == 0);
@@ -223,9 +267,20 @@ cache_free(dns_cache_t *cache) {
 		cache->filename = NULL;
 	}
 
-	if (cache->db)
+	if (cache->db != NULL)
 		dns_db_detach(&cache->db);
 
+	if (cache->db_argv != NULL) {
+		for (i = 0; i < cache->db_argc; i++)
+			if (cache->db_argv[i] != NULL)
+				isc_mem_free(cache->mctx, cache->db_argv[i]);
+		isc_mem_put(cache->mctx, cache->db_argv,
+			    cache->db_argc * sizeof(char *));
+	}
+
+	if (cache->db_type != NULL)
+		isc_mem_free(cache->mctx, cache->db_type);
+
 	DESTROYLOCK(&cache->lock);
 	DESTROYLOCK(&cache->filelock);
 	cache->magic = 0;
@@ -802,3 +857,17 @@ cleaner_shutdown_action(isc_task_t *task, isc_event_t *event) {
 	if (should_free)
 		cache_free(cache);
 }
+
+isc_result_t
+dns_cache_flush(dns_cache_t *cache) {
+	dns_db_t *db = NULL;
+	isc_result_t result;
+
+	result = cache_create_db(cache, &db);
+	if (result != ISC_R_SUCCESS)
+		return (result);
+
+	dns_db_detach(&cache->db);
+	cache->db = db;
+	return (ISC_R_SUCCESS);
+}

lib/dns/include/dns/adb.h

@@ -15,7 +15,7 @@
  * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
-/* $Id: adb.h,v 1.64 2001/02/28 20:47:36 gson Exp $ */
+/* $Id: adb.h,v 1.65 2001/04/11 20:37:48 bwelling Exp $ */
 
 #ifndef DNS_ADB_H
 #define DNS_ADB_H 1
@@ -559,6 +559,15 @@ dns_adb_freeaddrinfo(dns_adb_t *adb, dns_adbaddrinfo_t **addrp);
  *	*addrp is a valid dns_adbaddrinfo_t *.
  */
 
+void
+dns_adb_flush(dns_adb_t *adb);
+/*
+ * Flushes all cached data from the adb.
+ *
+ * Requires:
+ * 	adb is valid.
+ */
+
 ISC_LANG_ENDDECLS
 
 #endif /* DNS_ADB_H */

lib/dns/include/dns/cache.h

@@ -15,7 +15,7 @@
  * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
-/* $Id: cache.h,v 1.16 2001/01/09 21:52:19 bwelling Exp $ */
+/* $Id: cache.h,v 1.17 2001/04/11 20:37:49 bwelling Exp $ */
 
 #ifndef DNS_CACHE_H
 #define DNS_CACHE_H 1
@@ -225,6 +225,16 @@ dns_cache_setcachesize(dns_cache_t *cache, isc_uint32_t size);
  * Set the maximum cache size.  0 means unlimited.
  */
 
+isc_result_t
+dns_cache_flush(dns_cache_t *cache);
+/*
+ * Flushes all data from the cache.
+ *
+ * Returns:
+ *	ISC_R_SUCCESS
+ *	ISC_R_NOMEMORY
+ */
+
 ISC_LANG_ENDDECLS
 
 #endif /* DNS_CACHE_H */

lib/dns/include/dns/view.h

@@ -15,7 +15,7 @@
  * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
-/* $Id: view.h,v 1.69 2001/03/26 21:33:04 bwelling Exp $ */
+/* $Id: view.h,v 1.70 2001/04/11 20:37:50 bwelling Exp $ */
 
 #ifndef DNS_VIEW_H
 #define DNS_VIEW_H 1
@@ -666,6 +666,21 @@ dns_view_dumpdbtostream(dns_view_t *view, FILE *fp);
  * 	others		An error occurred (see dns_master_dump)
  */
 
+isc_result_t
+dns_view_flushcache(dns_view_t *view);
+/*
+ * Flush the view's cache (and ADB).
+ *
+ * Requires:
+ * 	'view' is valid.
+ *
+ * 	No other tasks are executing.
+ *
+ * Returns:
+ *	ISC_R_SUCCESS
+ *	ISC_R_NOMEMORY
+ */
+
 ISC_LANG_ENDDECLS
 
 #endif /* DNS_VIEW_H */

lib/dns/resolver.c

@@ -15,7 +15,7 @@
  * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
-/* $Id: resolver.c,v 1.214 2001/03/26 21:32:58 bwelling Exp $ */
+/* $Id: resolver.c,v 1.215 2001/04/11 20:37:44 bwelling Exp $ */
 
 #include <config.h>
 
@@ -173,6 +173,8 @@ struct fetchctx {
 	dns_fwdpolicy_t			fwdpolicy;
 	isc_sockaddrlist_t		bad;
 	ISC_LIST(dns_validator_t)	validators;
+	dns_db_t *			cache;
+	dns_adb_t *			adb;
 
 	/*
 	 * The number of events we're waiting for.
@@ -406,8 +408,7 @@ fctx_cancelquery(resquery_t **queryp, dns_dispatchevent_t **deventp,
 			 */
 			factor = DNS_ADB_RTTADJREPLACE;
 		}
-		dns_adb_adjustsrtt(fctx->res->view->adb, query->addrinfo, rtt,
+		dns_adb_adjustsrtt(fctx->adb, query->addrinfo, rtt, factor);
-				   factor);
 	}
 
 	if (query->dispentry != NULL)
@@ -491,7 +492,7 @@ fctx_cleanupforwaddrs(fetchctx_t *fctx) {
 	     addr = next_addr) {
 		next_addr = ISC_LIST_NEXT(addr, publink);
 		ISC_LIST_UNLINK(fctx->forwaddrs, addr, publink);
-		dns_adb_freeaddrinfo(fctx->res->view->adb, &addr);
+		dns_adb_freeaddrinfo(fctx->adb, &addr);
 	}
 }
 
@@ -976,7 +977,7 @@ resquery_send(resquery_t *query) {
 	    !useedns)
 	{
 		query->options |= DNS_FETCHOPT_NOEDNS0;
-		dns_adb_changeflags(fctx->res->view->adb,
+		dns_adb_changeflags(fctx->adb,
 				    query->addrinfo,
 				    DNS_FETCHOPT_NOEDNS0,
 				    DNS_FETCHOPT_NOEDNS0);
@@ -1477,7 +1478,7 @@ fctx_getaddresses(fetchctx_t *fctx) {
 
 	while (sa != NULL) {
 		ai = NULL;
-		result = dns_adb_findaddrinfo(fctx->res->view->adb,
+		result = dns_adb_findaddrinfo(fctx->adb,
 					      sa, &ai, 0);  /* XXXMLG */
 		if (result == ISC_R_SUCCESS) {
 			ai->flags |= FCTX_ADDRINFO_FORWARDER;
@@ -1556,7 +1557,7 @@ fctx_getaddresses(fetchctx_t *fctx) {
 		 * See what we know about this address.
 		 */
 		find = NULL;
-		result = dns_adb_createfind(res->view->adb,
+		result = dns_adb_createfind(fctx->adb,
 					    res->buckets[fctx->bucketnum].task,
 					    fctx_finddone, fctx, &ns.name,
 					    &fctx->domain, options, now, NULL,
@@ -1848,6 +1849,8 @@ fctx_destroy(fetchctx_t *fctx) {
 	if (dns_rdataset_isassociated(&fctx->nameservers))
 		dns_rdataset_disassociate(&fctx->nameservers);
 	dns_name_free(&fctx->name, res->mctx);
+	dns_db_detach(&fctx->cache);
+	dns_adb_detach(&fctx->adb);
 	isc_mem_put(res->mctx, fctx, sizeof *fctx);
 
 	if (res->buckets[bucketnum].exiting &&
@@ -2258,6 +2261,14 @@ fctx_create(dns_resolver_t *res, dns_name_t *name, dns_rdatatype_t type,
 		goto cleanup_rmessage;
 	}
 
+	/*
+	 * Attach to the view's cache and adb.
+	 */
+	fctx->cache = NULL;
+	dns_db_attach(res->view->cachedb, &fctx->cache);
+	fctx->adb = NULL;
+	dns_adb_attach(res->view->adb, &fctx->adb);
+
 	ISC_LIST_INIT(fctx->events);
 	ISC_LINK_INIT(fctx, link);
 	fctx->magic = FCTX_MAGIC;
@@ -2558,20 +2569,17 @@ validated(isc_task_t *task, isc_event_t *event) {
 	if (vevent->result != ISC_R_SUCCESS) {
 		FCTXTRACE("validation failed");
 		if (vevent->rdataset != NULL) {
-			result = dns_db_findnode(fctx->res->view->cachedb,
+			result = dns_db_findnode(fctx->cache, vevent->name,
-						 vevent->name, ISC_TRUE,
+						 ISC_TRUE, &node);
-						 &node);
 			if (result != ISC_R_SUCCESS)
 				goto noanswer_response;
-			(void)dns_db_deleterdataset(fctx->res->view->cachedb,
+			(void)dns_db_deleterdataset(fctx->cache, node, NULL,
-						    node, NULL,
 						    vevent->type, 0);
 			if (vevent->sigrdataset != NULL)
-				(void)dns_db_deleterdataset(
+				(void)dns_db_deleterdataset(fctx->cache,
-						fctx->res->view->cachedb,
+							    node, NULL,
-						node, NULL,
+							    dns_rdatatype_sig,
-						dns_rdatatype_sig,
+							    vevent->type);
-						vevent->type);
 		}
 		result = vevent->result;
 		goto noanswer_response;
@@ -2588,8 +2596,8 @@ validated(isc_task_t *task, isc_event_t *event) {
 		else
 			covers = fctx->type;
 
-		result = dns_db_findnode(fctx->res->view->cachedb,
+		result = dns_db_findnode(fctx->cache, vevent->name, ISC_TRUE,
-					 vevent->name, ISC_TRUE, &node);
+					 &node);
 		if (result != ISC_R_SUCCESS)
 			goto noanswer_response;
 
@@ -2603,8 +2611,7 @@ validated(isc_task_t *task, isc_event_t *event) {
 		    covers == dns_rdatatype_any)
 			ttl = 0;
 
-		result = ncache_adderesult(fctx->rmessage,
+		result = ncache_adderesult(fctx->rmessage, fctx->cache, node,
-					   fctx->res->view->cachedb, node,
 					   covers, now, ttl,
 					   ardataset, &eresult);
 		if (result != ISC_R_SUCCESS)
@@ -2621,21 +2628,17 @@ validated(isc_task_t *task, isc_event_t *event) {
 	 * rdatasets to the first event on the fetch
 	 * event list.
 	 */
-	result = dns_db_findnode(fctx->res->view->cachedb,
+	result = dns_db_findnode(fctx->cache, vevent->name, ISC_TRUE, &node);
-				 vevent->name, ISC_TRUE, &node);
 	if (result != ISC_R_SUCCESS)
 		goto noanswer_response;
 
-	result = dns_db_addrdataset(fctx->res->view->cachedb,
+	result = dns_db_addrdataset(fctx->cache, node, NULL, now,
-				    node, NULL, now,
+				    vevent->rdataset, 0, ardataset);
-				    vevent->rdataset, 0,
-				    ardataset);
 	if (result != ISC_R_SUCCESS &&
 	    result != DNS_R_UNCHANGED)
 		goto noanswer_response;
 	if (vevent->sigrdataset != NULL) {
-		result = dns_db_addrdataset(fctx->res->view->cachedb,
+		result = dns_db_addrdataset(fctx->cache, node, NULL, now,
-					    node, NULL, now,
 					    vevent->sigrdataset, 0,
 					    asigrdataset);
 		if (result != ISC_R_SUCCESS &&
@@ -2680,7 +2683,7 @@ validated(isc_task_t *task, isc_event_t *event) {
 		hevent->result = eresult;
 		dns_name_copy(vevent->name,
 			      dns_fixedname_name(&hevent->foundname), NULL);
-		dns_db_attach(fctx->res->view->cachedb, &hevent->db);
+		dns_db_attach(fctx->cache, &hevent->db);
 		hevent->node = node;
 		node = NULL;
 		clone_results(fctx);
@@ -2688,7 +2691,7 @@ validated(isc_task_t *task, isc_event_t *event) {
 
  noanswer_response:
 	if (node != NULL)
-		dns_db_detachnode(fctx->res->view->cachedb, &node);
+		dns_db_detachnode(fctx->cache, &node);
 
 	fctx_done(fctx, result);
 
@@ -2773,7 +2776,7 @@ cache_name(fetchctx_t *fctx, dns_name_t *name, isc_stdtime_t now) {
 	 * Find or create the cache node.
 	 */
 	node = NULL;
-	result = dns_db_findnode(res->view->cachedb, name, ISC_TRUE, &node);
+	result = dns_db_findnode(fctx->cache, name, ISC_TRUE, &node);
 	if (result != ISC_R_SUCCESS)
 		return (result);
 
@@ -2843,9 +2846,8 @@ cache_name(fetchctx_t *fctx, dns_name_t *name, isc_stdtime_t now) {
 				addedrdataset = ardataset;
 			else
 				addedrdataset = NULL;
-			result = dns_db_addrdataset(res->view->cachedb,
+			result = dns_db_addrdataset(fctx->cache, node, NULL,
-						    node, NULL, now,
+						    now, rdataset, 0,
-						    rdataset, 0,
 						    addedrdataset);
 			if (result == DNS_R_UNCHANGED)
 				result = ISC_R_SUCCESS;
@@ -2856,7 +2858,7 @@ cache_name(fetchctx_t *fctx, dns_name_t *name, isc_stdtime_t now) {
 					addedrdataset = asigrdataset;
 				else
 					addedrdataset = NULL;
-				result = dns_db_addrdataset(res->view->cachedb,
+				result = dns_db_addrdataset(fctx->cache,
 							    node, NULL, now,
 							    sigrdataset, 0,
 							    addedrdataset);
@@ -2943,7 +2945,7 @@ cache_name(fetchctx_t *fctx, dns_name_t *name, isc_stdtime_t now) {
 			/*
 			 * Now we can add the rdataset.
 			 */
-			result = dns_db_addrdataset(res->view->cachedb,
+			result = dns_db_addrdataset(fctx->cache,
 						    node, NULL, now,
 						    rdataset,
 						    options,
@@ -2993,7 +2995,7 @@ cache_name(fetchctx_t *fctx, dns_name_t *name, isc_stdtime_t now) {
 		fctx->attributes |= FCTX_ATTR_HAVEANSWER;
 		if (event != NULL) {
 			event->result = eresult;
-			dns_db_attach(res->view->cachedb, adbp);
+			dns_db_attach(fctx->cache, adbp);
 			*anodep = node;
 			node = NULL;
 			clone_results(fctx);
@@ -3001,7 +3003,7 @@ cache_name(fetchctx_t *fctx, dns_name_t *name, isc_stdtime_t now) {
 	}
 
 	if (node != NULL)
-		dns_db_detachnode(res->view->cachedb, &node);
+		dns_db_detachnode(fctx->cache, &node);
 
 	return (result);
 }
@@ -3200,8 +3202,7 @@ ncache_message(fetchctx_t *fctx, dns_rdatatype_t covers, isc_stdtime_t now) {
 		event = NULL;
 
 	node = NULL;
-	result = dns_db_findnode(res->view->cachedb, name, ISC_TRUE,
+	result = dns_db_findnode(fctx->cache, name, ISC_TRUE, &node);
-				 &node);
 	if (result != ISC_R_SUCCESS)
 		goto unlock;
 
@@ -3215,7 +3216,7 @@ ncache_message(fetchctx_t *fctx, dns_rdatatype_t covers, isc_stdtime_t now) {
 	    covers == dns_rdatatype_any)
 		ttl = 0;
 
-	result = ncache_adderesult(fctx->rmessage, res->view->cachedb, node,
+	result = ncache_adderesult(fctx->rmessage, fctx->cache, node,
 				   covers, now, ttl, ardataset, &eresult);
 	if (result != ISC_R_SUCCESS)
 		goto unlock;
@@ -3224,7 +3225,7 @@ ncache_message(fetchctx_t *fctx, dns_rdatatype_t covers, isc_stdtime_t now) {
 		fctx->attributes |= FCTX_ATTR_HAVEANSWER;
 		if (event != NULL) {
 			event->result = eresult;
-			dns_db_attach(res->view->cachedb, adbp);
+			dns_db_attach(fctx->cache, adbp);
 			*anodep = node;
 			node = NULL;
 			clone_results(fctx);
@@ -3235,7 +3236,7 @@ ncache_message(fetchctx_t *fctx, dns_rdatatype_t covers, isc_stdtime_t now) {
 	UNLOCK(&res->buckets[fctx->bucketnum].lock);
 
 	if (node != NULL)
-		dns_db_detachnode(res->view->cachedb, &node);
+		dns_db_detachnode(fctx->cache, &node);
 
 	return (result);
 }
@@ -4073,7 +4074,7 @@ resquery_response(isc_task_t *task, isc_event_t *event) {
 			/*
 			 * Remember that they don't like EDNS0.
 			 */
-			dns_adb_changeflags(fctx->res->view->adb,
+			dns_adb_changeflags(fctx->adb,
 					    query->addrinfo,
 					    DNS_FETCHOPT_NOEDNS0,
 					    DNS_FETCHOPT_NOEDNS0);
@@ -4129,7 +4130,7 @@ resquery_response(isc_task_t *task, isc_event_t *event) {
 					 * Remember that they don't like EDNS0.
 					 */
 					dns_adb_changeflags(
-							fctx->res->view->adb,
+							fctx->adb,
 							query->addrinfo,
 							DNS_FETCHOPT_NOEDNS0,
 							DNS_FETCHOPT_NOEDNS0);
@@ -4157,7 +4158,7 @@ resquery_response(isc_task_t *task, isc_event_t *event) {
 				/*
 				 * Remember that they don't like EDNS0.
 				 */
-				dns_adb_changeflags(fctx->res->view->adb,
+				dns_adb_changeflags(fctx->adb,
 						    query->addrinfo,
 						    DNS_FETCHOPT_NOEDNS0,
 						    DNS_FETCHOPT_NOEDNS0);
@@ -4241,7 +4242,7 @@ resquery_response(isc_task_t *task, isc_event_t *event) {
 				/*
 				 * Remember that they don't like EDNS0.
 				 */
-				dns_adb_changeflags(fctx->res->view->adb,
+				dns_adb_changeflags(fctx->adb,
 						    query->addrinfo,
 						    DNS_FETCHOPT_NOEDNS0,
 						    DNS_FETCHOPT_NOEDNS0);
@@ -4297,7 +4298,7 @@ resquery_response(isc_task_t *task, isc_event_t *event) {
 	if (fctx->res->lame_ttl != 0 && !ISFORWARDER(query->addrinfo) &&
 	    is_lame(fctx)) {
 		log_lame(fctx, query->addrinfo);
-		dns_adb_marklame(fctx->res->view->adb, query->addrinfo,
+		dns_adb_marklame(fctx->adb, query->addrinfo,
 				 &fctx->domain, now + fctx->res->lame_ttl);
 		broken_server = ISC_TRUE;
 		keep_trying = ISC_TRUE;

lib/dns/view.c

@@ -15,7 +15,7 @@
  * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
-/* $Id: view.c,v 1.98 2001/03/26 21:33:00 bwelling Exp $ */
+/* $Id: view.c,v 1.99 2001/04/11 20:37:45 bwelling Exp $ */
 
 #include <config.h>
 
@@ -1093,3 +1093,21 @@ dns_view_dumpdbtostream(dns_view_t *view, FILE *fp) {
 #endif
 	return (ISC_R_SUCCESS);
 }
+
+isc_result_t
+dns_view_flushcache(dns_view_t *view) {
+	isc_result_t result;
+
+	REQUIRE(DNS_VIEW_VALID(view));
+
+	if (view->cachedb == NULL)
+		return (ISC_R_SUCCESS);
+	result = dns_cache_flush(view->cache);
+	if (result != ISC_R_SUCCESS)
+		return (result);
+	dns_db_detach(&view->cachedb);
+	dns_cache_attachdb(view->cache, &view->cachedb);
+
+	dns_adb_flush(view->adb);
+	return (ISC_R_SUCCESS);
+}