resolved: add a generic DnsSearchDomain concept

With this change, we add a new object to resolved, "DnsSearchDomain="
which wraps a search domain. This is then used to introduce a global
search domain list, in addition to the existing per-link search domain
list which is reword to make use of this new object too.

This is preparation for implement proper unicast DNS search domain
support.

1 files changed, 6 insertions, 0 deletions

diff --git a/src/resolve/resolved-link.h b/src/resolve/resolved-link.h
index 76e96e733a..d72461de06 100644
--- a/src/resolve/resolved-link.h
+++ b/src/resolve/resolved-link.h
@@ -30,6 +30,8 @@ typedef struct Link Link;
 typedef struct LinkAddress LinkAddress;
 
 #include "resolved-dns-rr.h"
+#include "resolved-dns-search-domain.h"
+#include "resolved-dns-server.h"
 #include "resolved-manager.h"
 
 struct LinkAddress {
@@ -57,6 +59,8 @@ struct Link {
         LIST_HEAD(DnsServer, dns_servers);
         DnsServer *current_dns_server;
 
+        LIST_HEAD(DnsSearchDomain, search_domains);
+
         Support llmnr_support;
 
         DnsScope *unicast_scope;
@@ -84,6 +88,8 @@ DnsServer* link_find_dns_server(Link *l, int family, const union in_addr_union *
 DnsServer* link_get_dns_server(Link *l);
 void link_next_dns_server(Link *l);
 
+void link_flush_search_domains(Link *l);
+
 int link_address_new(Link *l, LinkAddress **ret, int family, const union in_addr_union *in_addr);
 LinkAddress *link_address_free(LinkAddress *a);
 int link_address_update_rtnl(LinkAddress *a, sd_netlink_message *m);