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When answering a nonrecursive query, do not use the cache if we have a

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referral from authoritative data.
This commit is contained in:
Bob Halley 2000-02-01 02:23:39 +00:00
parent e974143273
commit bfab626984
1 changed files with 12 additions and 4 deletions
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16
bin/named/query.c
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@ -547,7 +547,7 @@ query_simplefind(void *arg, dns_name_t *name, dns_rdatatype_t type,
*/
result = DNS_R_NOTFOUND;
} else if (result == DNS_R_GLUE) {
if (USECACHE(client)) {
if (USECACHE(client) && RECURSIONOK(client)) {
/*
* We found an answer, but the cache may be better.
* Remember what we've got and go look in the cache.
@ -784,7 +784,7 @@ query_addadditional(void *arg, dns_name_t *name, dns_rdatatype_t qtype) {
}
}
} else if (result == DNS_R_GLUE) {
if (USECACHE(client)) {
if (USECACHE(client) && RECURSIONOK(client)) {
/*
* We found an answer, but the cache may be
* better. Remember what we've got and go look in
@ -2062,11 +2062,19 @@ query_find(ns_client_t *client, dns_fetchevent_t *event) {
/*
* We're authoritative for an ancestor of QNAME.
*/
if (!USECACHE(client)) {
if (!USECACHE(client) || !RECURSIONOK(client)) {
/*
* We don't have a cache, so this is the best
* If we don't have a cache, this is the best
* answer.
*
* If the client is making a nonrecursive
* query we always give out the authoritative
* delegation. This way even if we get
* junk in our cache, we won't fail in our
* role as the delegating authority if another
* nameserver asks us about a delegated
* subzone.
*
* We enable the retrieval of glue for this
* database by setting client->query.gluedb.
*/