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resolve: do not hit CNAME or DNAME entry in NODATA cache (#9836)
author
Yu Watanabe
<watanabe.yu+github@gmail.com>
Mon, 13 Aug 2018 05:32:33 +0000
(14:32 +0900)
committer
GitHub
<noreply@github.com>
Mon, 13 Aug 2018 05:32:33 +0000
(14:32 +0900)
Fixes #9833.
src/resolve/resolved-dns-cache.c
patch
|
blob
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diff --git
a/src/resolve/resolved-dns-cache.c
b/src/resolve/resolved-dns-cache.c
index
95e9e07
..
99dec28
100644
(file)
--- a/
src/resolve/resolved-dns-cache.c
+++ b/
src/resolve/resolved-dns-cache.c
@@
-783,7
+783,7
@@
static DnsCacheItem *dns_cache_get_by_key_follow_cname_dname_nsec(DnsCache *c, D
if (dns_type_may_redirect(k->type)) {
/* Check if we have a CNAME record instead */
i = hashmap_get(c->by_key, &DNS_RESOURCE_KEY_CONST(k->class, DNS_TYPE_CNAME, n));
- if (i)
+ if (i
&& i->type != DNS_CACHE_NODATA
)
return i;
/* OK, let's look for cached DNAME records. */
@@
-792,7
+792,7
@@
static DnsCacheItem *dns_cache_get_by_key_follow_cname_dname_nsec(DnsCache *c, D
return NULL;
i = hashmap_get(c->by_key, &DNS_RESOURCE_KEY_CONST(k->class, DNS_TYPE_DNAME, n));
- if (i)
+ if (i
&& i->type != DNS_CACHE_NODATA
)
return i;
/* Jump one label ahead */