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-rw-r--r--src/resolve/resolved-dns-cache.c110
1 files changed, 67 insertions, 43 deletions
diff --git a/src/resolve/resolved-dns-cache.c b/src/resolve/resolved-dns-cache.c
index 25243cb479..9ab44400bd 100644
--- a/src/resolve/resolved-dns-cache.c
+++ b/src/resolve/resolved-dns-cache.c
@@ -276,7 +276,7 @@ static int dns_cache_put_positive(
_cleanup_(dns_cache_item_freep) DnsCacheItem *i = NULL;
_cleanup_free_ char *key_str = NULL;
DnsCacheItem *existing;
- int r;
+ int r, k;
assert(c);
assert(rr);
@@ -284,14 +284,18 @@ static int dns_cache_put_positive(
/* New TTL is 0? Delete the entry... */
if (rr->ttl <= 0) {
- r = dns_resource_key_to_string(rr->key, &key_str);
- if (r < 0)
- return r;
+ k = dns_cache_remove(c, rr->key);
- if (dns_cache_remove(c, rr->key))
- log_debug("Removed zero TTL entry from cache: %s", key_str);
- else
- log_debug("Not caching zero TTL cache entry: %s", key_str);
+ if (log_get_max_level() >= LOG_DEBUG) {
+ r = dns_resource_key_to_string(rr->key, &key_str);
+ if (r < 0)
+ return r;
+
+ if (k > 0)
+ log_debug("Removed zero TTL entry from cache: %s", key_str);
+ else
+ log_debug("Not caching zero TTL cache entry: %s", key_str);
+ }
return 0;
}
@@ -332,11 +336,13 @@ static int dns_cache_put_positive(
if (r < 0)
return r;
- r = dns_resource_key_to_string(i->key, &key_str);
- if (r < 0)
- return r;
+ if (log_get_max_level() >= LOG_DEBUG) {
+ r = dns_resource_key_to_string(i->key, &key_str);
+ if (r < 0)
+ return r;
- log_debug("Added cache entry for %s", key_str);
+ log_debug("Added cache entry for %s", key_str);
+ }
i = NULL;
return 0;
@@ -369,11 +375,13 @@ static int dns_cache_put_negative(
* pseudo-type for NXDOMAIN entries */
return 0;
if (soa_ttl <= 0) {
- r = dns_resource_key_to_string(key, &key_str);
- if (r < 0)
- return r;
+ if (log_get_max_level() >= LOG_DEBUG) {
+ r = dns_resource_key_to_string(key, &key_str);
+ if (r < 0)
+ return r;
- log_debug("Not caching negative entry with zero SOA TTL: %s", key_str);
+ log_debug("Not caching negative entry with zero SOA TTL: %s", key_str);
+ }
return 0;
}
@@ -411,11 +419,13 @@ static int dns_cache_put_negative(
if (r < 0)
return r;
- r = dns_resource_key_to_string(i->key, &key_str);
- if (r < 0)
- return r;
+ if (log_get_max_level() >= LOG_DEBUG) {
+ r = dns_resource_key_to_string(i->key, &key_str);
+ if (r < 0)
+ return r;
- log_debug("Added %s cache entry for %s", i->type == DNS_CACHE_NODATA ? "NODATA" : "NXDOMAIN", key_str);
+ log_debug("Added %s cache entry for %s", i->type == DNS_CACHE_NODATA ? "NODATA" : "NXDOMAIN", key_str);
+ }
i = NULL;
return 0;
@@ -445,13 +455,15 @@ int dns_cache_put(
}
if (!answer) {
- _cleanup_free_ char *key_str = NULL;
+ if (log_get_max_level() >= LOG_DEBUG) {
+ _cleanup_free_ char *key_str = NULL;
- r = dns_resource_key_to_string(key, &key_str);
- if (r < 0)
- return r;
+ r = dns_resource_key_to_string(key, &key_str);
+ if (r < 0)
+ return r;
- log_debug("Not caching negative entry without a SOA record: %s", key_str);
+ log_debug("Not caching negative entry without a SOA record: %s", key_str);
+ }
return 0;
}
@@ -617,11 +629,13 @@ int dns_cache_lookup(DnsCache *c, DnsResourceKey *key, int *rcode, DnsAnswer **r
/* If we have ANY lookups we don't use the cache, so
* that the caller refreshes via the network. */
- r = dns_resource_key_to_string(key, &key_str);
- if (r < 0)
- return r;
+ if (log_get_max_level() >= LOG_DEBUG) {
+ r = dns_resource_key_to_string(key, &key_str);
+ if (r < 0)
+ return r;
- log_debug("Ignoring cache for ANY lookup: %s", key_str);
+ log_debug("Ignoring cache for ANY lookup: %s", key_str);
+ }
*ret = NULL;
*rcode = DNS_RCODE_SUCCESS;
@@ -632,11 +646,13 @@ int dns_cache_lookup(DnsCache *c, DnsResourceKey *key, int *rcode, DnsAnswer **r
if (!first) {
/* If one question cannot be answered we need to refresh */
- r = dns_resource_key_to_string(key, &key_str);
- if (r < 0)
- return r;
+ if (log_get_max_level() >= LOG_DEBUG) {
+ r = dns_resource_key_to_string(key, &key_str);
+ if (r < 0)
+ return r;
- log_debug("Cache miss for %s", key_str);
+ log_debug("Cache miss for %s", key_str);
+ }
*ret = NULL;
*rcode = DNS_RCODE_SUCCESS;
@@ -658,15 +674,17 @@ int dns_cache_lookup(DnsCache *c, DnsResourceKey *key, int *rcode, DnsAnswer **r
have_non_authenticated = true;
}
- r = dns_resource_key_to_string(key, &key_str);
- if (r < 0)
- return r;
-
if (nsec && key->type != DNS_TYPE_NSEC) {
- log_debug("NSEC NODATA cache hit for %s", key_str);
+ if (log_get_max_level() >= LOG_DEBUG) {
+ r = dns_resource_key_to_string(key, &key_str);
+ if (r < 0)
+ return r;
+
+ log_debug("NSEC NODATA cache hit for %s", key_str);
+ }
/* We only found an NSEC record that matches our name.
- * If it says the type doesn't exit report
+ * If it says the type doesn't exist report
* NODATA. Otherwise report a cache miss. */
*ret = NULL;
@@ -678,10 +696,16 @@ int dns_cache_lookup(DnsCache *c, DnsResourceKey *key, int *rcode, DnsAnswer **r
!bitmap_isset(nsec->rr->nsec.types, DNS_TYPE_DNAME);
}
- log_debug("%s cache hit for %s",
- n > 0 ? "Positive" :
- nxdomain ? "NXDOMAIN" : "NODATA",
- key_str);
+ if (log_get_max_level() >= LOG_DEBUG) {
+ r = dns_resource_key_to_string(key, &key_str);
+ if (r < 0)
+ return r;
+
+ log_debug("%s cache hit for %s",
+ n > 0 ? "Positive" :
+ nxdomain ? "NXDOMAIN" : "NODATA",
+ key_str);
+ }
if (n <= 0) {
*ret = NULL;
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-12-18 16:29:20 +0000