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-rw-r--r--src/resolve/resolved-bus.c16
-rw-r--r--src/resolve/resolved-dns-query.c8
-rw-r--r--src/resolve/resolved-dns-scope.c33
-rw-r--r--src/resolve/resolved-dns-scope.h2
-rw-r--r--src/resolve/resolved-dns-transaction.c20
5 files changed, 33 insertions, 46 deletions
diff --git a/src/resolve/resolved-bus.c b/src/resolve/resolved-bus.c
index 1f23834ce3..12c17003e9 100644
--- a/src/resolve/resolved-bus.c
+++ b/src/resolve/resolved-bus.c
@@ -226,10 +226,6 @@ static void bus_method_resolve_hostname_complete(DnsQuery *q) {
* query, this time with the cname */
if (added <= 0) {
r = dns_query_go(q);
- if (r == -ESRCH) {
- r = sd_bus_reply_method_errorf(q->request, BUS_ERROR_NO_NAME_SERVERS, "No appropriate name servers or networks for name found");
- goto finish;
- }
if (r < 0) {
r = sd_bus_reply_method_errno(q->request, -r, NULL);
goto finish;
@@ -346,10 +342,6 @@ static int bus_method_resolve_hostname(sd_bus_message *message, void *userdata,
r = dns_query_go(q);
if (r < 0) {
dns_query_free(q);
-
- if (r == -ESRCH)
- sd_bus_error_setf(error, BUS_ERROR_NO_NAME_SERVERS, "No appropriate name servers or networks for name found");
-
return r;
}
@@ -494,10 +486,6 @@ static int bus_method_resolve_address(sd_bus_message *message, void *userdata, s
r = dns_query_go(q);
if (r < 0) {
dns_query_free(q);
-
- if (r == -ESRCH)
- sd_bus_error_setf(error, BUS_ERROR_NO_NAME_SERVERS, "No appropriate name servers or networks for name found");
-
return r;
}
@@ -647,10 +635,6 @@ static int bus_method_resolve_record(sd_bus_message *message, void *userdata, sd
r = dns_query_go(q);
if (r < 0) {
dns_query_free(q);
-
- if (r == -ESRCH)
- sd_bus_error_setf(error, BUS_ERROR_NO_NAME_SERVERS, "No appropriate name servers or networks for name found");
-
return r;
}
diff --git a/src/resolve/resolved-dns-query.c b/src/resolve/resolved-dns-query.c
index d9f5b342b2..c0b4c8ba81 100644
--- a/src/resolve/resolved-dns-query.c
+++ b/src/resolve/resolved-dns-query.c
@@ -651,12 +651,8 @@ int dns_query_go(DnsQuery *q) {
DnsTransactionState state = DNS_TRANSACTION_NO_SERVERS;
dns_query_synthesize_reply(q, &state);
- if (state != DNS_TRANSACTION_NO_SERVERS) {
- dns_query_complete(q, state);
- return 1;
- }
-
- return -ESRCH;
+ dns_query_complete(q, state);
+ return 1;
}
r = dns_query_add_transaction_split(q, first);
diff --git a/src/resolve/resolved-dns-scope.c b/src/resolve/resolved-dns-scope.c
index 57a2c7d6c1..336269ca8a 100644
--- a/src/resolve/resolved-dns-scope.c
+++ b/src/resolve/resolved-dns-scope.c
@@ -78,8 +78,7 @@ DnsScope* dns_scope_free(DnsScope *s) {
dns_scope_llmnr_membership(s, false);
- while ((t = s->transactions)) {
-
+ while ((t = hashmap_steal_first(s->transactions))) {
/* Abort the transaction, but make sure it is not
* freed while we still look at it */
@@ -90,6 +89,8 @@ DnsScope* dns_scope_free(DnsScope *s) {
dns_transaction_free(t);
}
+ hashmap_free(s->transactions);
+
while ((rr = ordered_hashmap_steal_first(s->conflict_queue)))
dns_resource_record_unref(rr);
@@ -623,24 +624,20 @@ DnsTransaction *dns_scope_find_transaction(DnsScope *scope, DnsResourceKey *key,
assert(scope);
assert(key);
- /* Try to find an ongoing transaction that is a equal or a
- * superset of the specified question */
-
- LIST_FOREACH(transactions_by_scope, t, scope->transactions) {
-
- /* Refuse reusing transactions that completed based on
- * cached data instead of a real packet, if that's
- * requested. */
- if (!cache_ok &&
- IN_SET(t->state, DNS_TRANSACTION_SUCCESS, DNS_TRANSACTION_FAILURE) &&
- !t->received)
- continue;
+ /* Try to find an ongoing transaction that is a equal to the
+ * specified question */
+ t = hashmap_get(scope->transactions, key);
+ if (!t)
+ return NULL;
- if (dns_resource_key_equal(t->key, key) > 0)
- return t;
- }
+ /* Refuse reusing transactions that completed based on cached
+ * data instead of a real packet, if that's requested. */
+ if (!cache_ok &&
+ IN_SET(t->state, DNS_TRANSACTION_SUCCESS, DNS_TRANSACTION_FAILURE) &&
+ !t->received)
+ return NULL;
- return NULL;
+ return t;
}
static int dns_scope_make_conflict_packet(
diff --git a/src/resolve/resolved-dns-scope.h b/src/resolve/resolved-dns-scope.h
index 47f285db47..88fb8224e2 100644
--- a/src/resolve/resolved-dns-scope.h
+++ b/src/resolve/resolved-dns-scope.h
@@ -60,7 +60,7 @@ struct DnsScope {
usec_t resend_timeout;
usec_t max_rtt;
- LIST_HEAD(DnsTransaction, transactions);
+ Hashmap *transactions;
LIST_FIELDS(DnsScope, scopes);
};
diff --git a/src/resolve/resolved-dns-transaction.c b/src/resolve/resolved-dns-transaction.c
index 81156dfa45..bbbc6377a8 100644
--- a/src/resolve/resolved-dns-transaction.c
+++ b/src/resolve/resolved-dns-transaction.c
@@ -35,7 +35,6 @@ DnsTransaction* dns_transaction_free(DnsTransaction *t) {
sd_event_source_unref(t->timeout_event_source);
- dns_resource_key_unref(t->key);
dns_packet_unref(t->sent);
dns_packet_unref(t->received);
dns_answer_unref(t->cached);
@@ -47,12 +46,14 @@ DnsTransaction* dns_transaction_free(DnsTransaction *t) {
dns_stream_free(t->stream);
if (t->scope) {
- LIST_REMOVE(transactions_by_scope, t->scope->transactions, t);
+ hashmap_remove(t->scope->transactions, t->key);
if (t->id != 0)
hashmap_remove(t->scope->manager->dns_transactions, UINT_TO_PTR(t->id));
}
+ dns_resource_key_unref(t->key);
+
while ((q = set_steal_first(t->queries)))
set_remove(q->transactions, t);
set_free(t->queries);
@@ -89,14 +90,18 @@ int dns_transaction_new(DnsTransaction **ret, DnsScope *s, DnsResourceKey *key)
if (r < 0)
return r;
+ r = hashmap_ensure_allocated(&s->transactions, &dns_resource_key_hash_ops);
+ if (r < 0)
+ return r;
+
t = new0(DnsTransaction, 1);
if (!t)
return -ENOMEM;
t->dns_fd = -1;
-
t->key = dns_resource_key_ref(key);
+ /* Find a fresh, unused transaction id */
do
random_bytes(&t->id, sizeof(t->id));
while (t->id == 0 ||
@@ -108,7 +113,12 @@ int dns_transaction_new(DnsTransaction **ret, DnsScope *s, DnsResourceKey *key)
return r;
}
- LIST_PREPEND(transactions_by_scope, s->transactions, t);
+ r = hashmap_put(s->transactions, t->key, t);
+ if (r < 0) {
+ hashmap_remove(s->manager->dns_transactions, UINT_TO_PTR(t->id));
+ return r;
+ }
+
t->scope = s;
if (ret)
@@ -274,7 +284,7 @@ static int dns_transaction_open_tcp(DnsTransaction *t) {
if (r == 0)
return -EINVAL;
if (family != t->scope->family)
- return -EAFNOSUPPORT;
+ return -ESRCH;
fd = dns_scope_tcp_socket(t->scope, family, &address, LLMNR_PORT, NULL);
}
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2025-10-25 11:34:14 +0000