55 #define VALID_DBTABLE(dbtable)	ISC_MAGIC_VALID(dbtable, DBTABLE_MAGIC)  argument
70 	dns_dbtable_t *dbtable;  in dns_dbtable_create()  local
76 	dbtable = (dns_dbtable_t *)isc_mem_get(mctx, sizeof(*dbtable));  in dns_dbtable_create()
77 	if (dbtable == NULL)  in dns_dbtable_create()
80 	dbtable->rbt = NULL;  in dns_dbtable_create()
81 	result = dns_rbt_create(mctx, dbdetach, NULL, &dbtable->rbt);  in dns_dbtable_create()
85 	result = isc_mutex_init(&dbtable->lock);  in dns_dbtable_create()
89 	result = isc_rwlock_init(&dbtable->tree_lock, 0, 0);  in dns_dbtable_create()
93 	dbtable->default_db = NULL;  in dns_dbtable_create()
94 	dbtable->mctx = NULL;  in dns_dbtable_create()
95 	isc_mem_attach(mctx, &dbtable->mctx);  in dns_dbtable_create()
96 	dbtable->rdclass = rdclass;  in dns_dbtable_create()
97 	dbtable->magic = DBTABLE_MAGIC;  in dns_dbtable_create()
98 	dbtable->references = 1;  in dns_dbtable_create()
100 	*dbtablep = dbtable;  in dns_dbtable_create()
105 	DESTROYLOCK(&dbtable->lock);  in dns_dbtable_create()
108 	dns_rbt_destroy(&dbtable->rbt);  in dns_dbtable_create()
111 	isc_mem_putanddetach(&mctx, dbtable, sizeof(*dbtable));  in dns_dbtable_create()
117 dbtable_free(dns_dbtable_t *dbtable) {  in dbtable_free()  argument
122 	RWLOCK(&dbtable->tree_lock, isc_rwlocktype_write);  in dbtable_free()
124 	if (dbtable->default_db != NULL)  in dbtable_free()
125 		dns_db_detach(&dbtable->default_db);  in dbtable_free()
127 	dns_rbt_destroy(&dbtable->rbt);  in dbtable_free()
129 	RWUNLOCK(&dbtable->tree_lock, isc_rwlocktype_write);  in dbtable_free()
131 	isc_rwlock_destroy(&dbtable->tree_lock);  in dbtable_free()
133 	dbtable->magic = 0;  in dbtable_free()
135 	isc_mem_putanddetach(&dbtable->mctx, dbtable, sizeof(*dbtable));  in dbtable_free()
156 	dns_dbtable_t *dbtable;  in dns_dbtable_detach()  local
160 	dbtable = *dbtablep;  in dns_dbtable_detach()
161 	REQUIRE(VALID_DBTABLE(dbtable));  in dns_dbtable_detach()
163 	LOCK(&dbtable->lock);  in dns_dbtable_detach()
165 	INSIST(dbtable->references > 0);  in dns_dbtable_detach()
166 	dbtable->references--;  in dns_dbtable_detach()
167 	if (dbtable->references == 0)  in dns_dbtable_detach()
170 	UNLOCK(&dbtable->lock);  in dns_dbtable_detach()
173 		dbtable_free(dbtable);  in dns_dbtable_detach()
179 dns_dbtable_add(dns_dbtable_t *dbtable, dns_db_t *db) {  in dns_dbtable_add()  argument
183 	REQUIRE(VALID_DBTABLE(dbtable));  in dns_dbtable_add()
184 	REQUIRE(dns_db_class(db) == dbtable->rdclass);  in dns_dbtable_add()
189 	RWLOCK(&dbtable->tree_lock, isc_rwlocktype_write);  in dns_dbtable_add()
190 	result = dns_rbt_addname(dbtable->rbt, dns_db_origin(clone), clone);  in dns_dbtable_add()
191 	RWUNLOCK(&dbtable->tree_lock, isc_rwlocktype_write);  in dns_dbtable_add()
197 dns_dbtable_remove(dns_dbtable_t *dbtable, dns_db_t *db) {  in dns_dbtable_remove()  argument
202 	REQUIRE(VALID_DBTABLE(dbtable));  in dns_dbtable_remove()
214 	RWLOCK(&dbtable->tree_lock, isc_rwlocktype_write);  in dns_dbtable_remove()
216 	result = dns_rbt_findname(dbtable->rbt, name, 0, NULL,  in dns_dbtable_remove()
222 		(void)dns_rbt_deletename(dbtable->rbt, name, ISC_FALSE);  in dns_dbtable_remove()
225 	RWUNLOCK(&dbtable->tree_lock, isc_rwlocktype_write);  in dns_dbtable_remove()
229 dns_dbtable_adddefault(dns_dbtable_t *dbtable, dns_db_t *db) {  in dns_dbtable_adddefault()  argument
230 	REQUIRE(VALID_DBTABLE(dbtable));  in dns_dbtable_adddefault()
231 	REQUIRE(dbtable->default_db == NULL);  in dns_dbtable_adddefault()
234 	RWLOCK(&dbtable->tree_lock, isc_rwlocktype_write);  in dns_dbtable_adddefault()
236 	dbtable->default_db = NULL;  in dns_dbtable_adddefault()
237 	dns_db_attach(db, &dbtable->default_db);  in dns_dbtable_adddefault()
239 	RWUNLOCK(&dbtable->tree_lock, isc_rwlocktype_write);  in dns_dbtable_adddefault()
243 dns_dbtable_getdefault(dns_dbtable_t *dbtable, dns_db_t **dbp) {  in dns_dbtable_getdefault()  argument
244 	REQUIRE(VALID_DBTABLE(dbtable));  in dns_dbtable_getdefault()
247 	RWLOCK(&dbtable->tree_lock, isc_rwlocktype_read);  in dns_dbtable_getdefault()
249 	dns_db_attach(dbtable->default_db, dbp);  in dns_dbtable_getdefault()
251 	RWUNLOCK(&dbtable->tree_lock, isc_rwlocktype_read);  in dns_dbtable_getdefault()
255 dns_dbtable_removedefault(dns_dbtable_t *dbtable) {  in dns_dbtable_removedefault()  argument
256 	REQUIRE(VALID_DBTABLE(dbtable));  in dns_dbtable_removedefault()
258 	RWLOCK(&dbtable->tree_lock, isc_rwlocktype_write);  in dns_dbtable_removedefault()
260 	dns_db_detach(&dbtable->default_db);  in dns_dbtable_removedefault()
262 	RWUNLOCK(&dbtable->tree_lock, isc_rwlocktype_write);  in dns_dbtable_removedefault()
266 dns_dbtable_find(dns_dbtable_t *dbtable, dns_name_t *name,  in dns_dbtable_find()  argument
278 	RWLOCK(&dbtable->tree_lock, isc_rwlocktype_read);  in dns_dbtable_find()
280 	result = dns_rbt_findname(dbtable->rbt, name, rbtoptions, NULL,  in dns_dbtable_find()
285 	else if (dbtable->default_db != NULL) {  in dns_dbtable_find()
286 		dns_db_attach(dbtable->default_db, dbp);  in dns_dbtable_find()
291 	RWUNLOCK(&dbtable->tree_lock, isc_rwlocktype_read);  in dns_dbtable_find()