resolved: reference count the dns servers

We want to reference the servers from their active transactions, so make sure
they stay around as long as the transaction does.

1 files changed, 4 insertions, 1 deletions

diff --git a/src/resolve/resolved-dns-server.h b/src/resolve/resolved-dns-server.h
index 70ff35b08f..03013beb82 100644
--- a/src/resolve/resolved-dns-server.h
+++ b/src/resolve/resolved-dns-server.h
@@ -37,6 +37,8 @@ typedef enum DnsServerType {
 struct DnsServer {
         Manager *manager;
 
+        unsigned n_ref;
+
         DnsServerType type;
 
         Link *link;
@@ -57,6 +59,7 @@ int dns_server_new(
                 int family,
                 const union in_addr_union *address);
 
-DnsServer* dns_server_free(DnsServer *s);
+DnsServer* dns_server_ref(DnsServer *s);
+DnsServer* dns_server_unref(DnsServer *s);
 
 extern const struct hash_ops dns_server_hash_ops;