#include "resolved-dns-cache.h"
+/* Never cache more than 1K entries */
#define CACHE_MAX 1024
+
+/* We never keep any item longer than 10min in our cache */
#define CACHE_TTL_MAX_USEC (10 * USEC_PER_MINUTE)
static void dns_cache_item_free(DnsCacheItem *i) {
assert(c);
assert(key);
- while ((i = hashmap_get(c->rrsets, &key)))
+ while ((i = hashmap_get(c->rrsets, key)))
dns_cache_item_remove_and_free(c, i);
}
break;
i = prioq_peek(c->expire);
+ assert(i);
+
+ /* Take an extra reference to the RR so that the key
+ * doesn't go away in the middle of the remove call */
rr = dns_resource_record_ref(i->rr);
dns_cache_remove(c, &rr->key);
}
/* Remove all entries that are past their TTL */
for (;;) {
+ _cleanup_(dns_resource_record_unrefp) DnsResourceRecord *rr = NULL;
DnsCacheItem *i;
usec_t ttl;
if (i->timestamp + ttl > t)
break;
- dns_cache_remove(c, &i->rr->key);
+ /* Take an extra reference to the RR so that the key
+ * doesn't go away in the middle of the remove call */
+ rr = dns_resource_record_ref(i->rr);
+ dns_cache_remove(c, &rr->key);
}
}
assert_se(hashmap_replace(c->rrsets, &rr->key, i) >= 0);
}
+ dns_resource_record_ref(rr);
dns_resource_record_unref(i->rr);
- i->rr = dns_resource_record_ref(rr);
+ i->rr = rr;
i->timestamp = timestamp;
-
prioq_reshuffle(c->expire, i, &i->expire_prioq_idx);
}