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Code Issues Releases Wiki Activity

clean up unnecessary dbiterator code related to origin

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the QP database doesn't support relative names as the RBTDB did, so
there's no need for a 'new_origin' flag or to handle `DNS_R_NEWORIGIN`
result codes.
This commit is contained in:
Evan Hunt 2024-04-29 14:57:42 -07:00
parent 85ab92b6e0
commit 7ff43befb7
1 changed files with 10 additions and 28 deletions
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38
lib/dns/qpcache.c
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@ -429,10 +429,8 @@ static dns_dbiteratormethods_t dbiterator_methods = {
typedef struct qpdb_dbiterator {
dns_dbiterator_t common;
bool paused;
bool new_origin;
isc_rwlocktype_t tree_locked;
isc_result_t result;
dns_fixedname_t origin;
dns_fixedname_t fixed;
dns_name_t *name;
dns_qpiter_t iter;
@ -1513,7 +1511,7 @@ find_coveringnsec(search_t *search, const dns_name_t *name,
* Extract predecessor from iterator.
*/
result = dns_qpiter_current(&iter, predecessor, NULL, NULL);
if (result != ISC_R_SUCCESS && result != DNS_R_NEWORIGIN) {
if (result != ISC_R_SUCCESS) {
return (ISC_R_NOTFOUND);
}
@ -2932,7 +2930,6 @@ createiterator(dns_db_t *db, unsigned int options,
qpdbiter->paused = true;
qpdbiter->tree_locked = isc_rwlocktype_none;
qpdbiter->result = ISC_R_SUCCESS;
dns_fixedname_init(&qpdbiter->origin);
dns_fixedname_init(&qpdbiter->fixed);
qpdbiter->name = dns_fixedname_initname(&qpdbiter->fixed);
qpdbiter->node = NULL;
@ -4199,7 +4196,7 @@ dbiterator_first(dns_dbiterator_t *iterator DNS__DB_FLARG) {
dns_qpiter_init(qpdb->nsec3, qpdbiter->current);
result = dns_qpiter_next(qpdbiter->current, qpdbiter->name,
(void **)&qpdbiter->node, NULL);
if (result == ISC_R_SUCCESS || result == DNS_R_NEWORIGIN) {
if (result == ISC_R_SUCCESS) {
/* If we're in the NSEC3 tree, skip the origin */
if (QPDBITER_NSEC3_ORIGIN_NODE(qpdb, qpdbiter)) {
result = dns_qpiter_next(
@ -4231,8 +4228,7 @@ dbiterator_first(dns_dbiterator_t *iterator DNS__DB_FLARG) {
UNREACHABLE();
}
if (result == ISC_R_SUCCESS || result == DNS_R_NEWORIGIN) {
qpdbiter->new_origin = true;
if (result == ISC_R_SUCCESS) {
reference_iter_node(qpdbiter DNS__DB_FLARG_PASS);
} else {
INSIST(result == ISC_R_NOMORE); /* The tree is empty. */
@ -4274,7 +4270,7 @@ dbiterator_last(dns_dbiterator_t *iterator DNS__DB_FLARG) {
dns_qpiter_init(qpdb->nsec3, qpdbiter->current);
result = dns_qpiter_prev(qpdbiter->current, qpdbiter->name,
(void **)&qpdbiter->node, NULL);
if ((result == ISC_R_SUCCESS || result == DNS_R_NEWORIGIN) &&
if (result == ISC_R_SUCCESS &&
QPDBITER_NSEC3_ORIGIN_NODE(qpdb, qpdbiter))
{
/*
@ -4295,7 +4291,7 @@ dbiterator_last(dns_dbiterator_t *iterator DNS__DB_FLARG) {
dns_qpiter_init(qpdb->nsec3, qpdbiter->current);
result = dns_qpiter_prev(qpdbiter->current, qpdbiter->name,
(void **)&qpdbiter->node, NULL);
if ((result == ISC_R_SUCCESS || result == DNS_R_NEWORIGIN) &&
if (result == ISC_R_SUCCESS &&
QPDBITER_NSEC3_ORIGIN_NODE(qpdb, qpdbiter))
{
/*
@ -4316,8 +4312,7 @@ dbiterator_last(dns_dbiterator_t *iterator DNS__DB_FLARG) {
UNREACHABLE();
}
if (result == ISC_R_SUCCESS || result == DNS_R_NEWORIGIN) {
qpdbiter->new_origin = true;
if (result == ISC_R_SUCCESS) {
reference_iter_node(qpdbiter DNS__DB_FLARG_PASS);
} else {
INSIST(result == ISC_R_NOMORE); /* The tree is empty. */
@ -4389,7 +4384,6 @@ dbiterator_seek(dns_dbiterator_t *iterator,
}
if (result == ISC_R_SUCCESS || result == DNS_R_PARTIALMATCH) {
qpdbiter->new_origin = true;
dns_name_copy(&qpdbiter->node->name, qpdbiter->name);
reference_iter_node(qpdbiter DNS__DB_FLARG_PASS);
} else {
@ -4424,7 +4418,7 @@ dbiterator_prev(dns_dbiterator_t *iterator DNS__DB_FLARG) {
(void **)&qpdbiter->node, NULL);
if (qpdbiter->current == &qpdbiter->nsec3iter) {
if (result == ISC_R_SUCCESS || result == DNS_R_NEWORIGIN) {
if (result == ISC_R_SUCCESS) {
/*
* If we're in the NSEC3 tree, it's empty or
* we've reached the origin, then we're done
@ -4444,8 +4438,6 @@ dbiterator_prev(dns_dbiterator_t *iterator DNS__DB_FLARG) {
}
}
qpdbiter->new_origin = (result == DNS_R_NEWORIGIN);
if (result == ISC_R_SUCCESS) {
reference_iter_node(qpdbiter DNS__DB_FLARG_PASS);
} else {
@ -4488,7 +4480,7 @@ dbiterator_next(dns_dbiterator_t *iterator DNS__DB_FLARG) {
(void **)&qpdbiter->node, NULL);
}
if (result == DNS_R_NEWORIGIN || result == ISC_R_SUCCESS) {
if (result == ISC_R_SUCCESS) {
/*
* If we've just started the NSEC3 tree,
* skip over the origin.
@ -4511,8 +4503,6 @@ dbiterator_next(dns_dbiterator_t *iterator DNS__DB_FLARG) {
}
}
qpdbiter->new_origin = (result == DNS_R_NEWORIGIN);
if (result == ISC_R_SUCCESS) {
reference_iter_node(qpdbiter DNS__DB_FLARG_PASS);
} else {
@ -4531,7 +4521,6 @@ dbiterator_current(dns_dbiterator_t *iterator, dns_dbnode_t **nodep,
qpcache_t *qpdb = (qpcache_t *)iterator->db;
qpdb_dbiterator_t *qpdbiter = (qpdb_dbiterator_t *)iterator;
qpcnode_t *node = qpdbiter->node;
isc_result_t result = ISC_R_SUCCESS;
REQUIRE(qpdbiter->result == ISC_R_SUCCESS);
REQUIRE(qpdbiter->node != NULL);
@ -4542,12 +4531,6 @@ dbiterator_current(dns_dbiterator_t *iterator, dns_dbnode_t **nodep,
if (name != NULL) {
dns_name_copy(&qpdbiter->node->name, name);
if (qpdbiter->common.relative_names && qpdbiter->new_origin) {
result = DNS_R_NEWORIGIN;
}
} else {
result = ISC_R_SUCCESS;
}
newref(qpdb, node, isc_rwlocktype_none,
@ -4555,7 +4538,7 @@ dbiterator_current(dns_dbiterator_t *iterator, dns_dbnode_t **nodep,
*nodep = qpdbiter->node;
return (result);
return (ISC_R_SUCCESS);
}
static isc_result_t
@ -4588,13 +4571,12 @@ dbiterator_pause(dns_dbiterator_t *iterator) {
static isc_result_t
dbiterator_origin(dns_dbiterator_t *iterator, dns_name_t *name) {
qpdb_dbiterator_t *qpdbiter = (qpdb_dbiterator_t *)iterator;
dns_name_t *origin = dns_fixedname_name(&qpdbiter->origin);
if (qpdbiter->result != ISC_R_SUCCESS) {
return (qpdbiter->result);
}
dns_name_copy(origin, name);
dns_name_copy(dns_rootname, name);
return (ISC_R_SUCCESS);
}