resolved: make sure that route-only domains are never added to /etc/resolv.conf

After all, /etc/resolv.conf doesn't know the concept of "route-only domains",
hence the domains should really not appear there.

3 files changed, 13 insertions, 3 deletions

diff --git a/src/resolve/resolved-manager.c b/src/resolve/resolved-manager.c
index 23101cb760..44abacb55a 100644
--- a/src/resolve/resolved-manager.c
+++ b/src/resolve/resolved-manager.c
@@ -1153,7 +1153,7 @@ int manager_compile_dns_servers(Manager *m, OrderedSet **dns) {
         return 0;
 }
 
-int manager_compile_search_domains(Manager *m, OrderedSet **domains) {
+int manager_compile_search_domains(Manager *m, OrderedSet **domains, int filter_route) {
         DnsSearchDomain *d;
         Iterator i;
         Link *l;
@@ -1167,6 +1167,11 @@ int manager_compile_search_domains(Manager *m, OrderedSet **domains) {
                 return r;
 
         LIST_FOREACH(domains, d, m->search_domains) {
+
+                if (filter_route >= 0 &&
+                    d->route_only != !!filter_route)
+                        continue;
+
                 r = ordered_set_put(*domains, d->name);
                 if (r == -EEXIST)
                         continue;
@@ -1177,6 +1182,11 @@ int manager_compile_search_domains(Manager *m, OrderedSet **domains) {
         HASHMAP_FOREACH(l, m->links, i) {
 
                 LIST_FOREACH(domains, d, l->search_domains) {
+
+                        if (filter_route >= 0 &&
+                            d->route_only != !!filter_route)
+                                continue;
+
                         r = ordered_set_put(*domains, d->name);
                         if (r == -EEXIST)
                                 continue;
diff --git a/src/resolve/resolved-manager.h b/src/resolve/resolved-manager.h
index ef71202ef9..c9e6ac9d4f 100644
--- a/src/resolve/resolved-manager.h
+++ b/src/resolve/resolved-manager.h
@@ -162,7 +162,7 @@ DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_free);
 int manager_is_own_hostname(Manager *m, const char *name);
 
 int manager_compile_dns_servers(Manager *m, OrderedSet **servers);
-int manager_compile_search_domains(Manager *m, OrderedSet **domains);
+int manager_compile_search_domains(Manager *m, OrderedSet **domains, int filter_route);
 
 DnssecMode manager_get_dnssec_mode(Manager *m);
 bool manager_dnssec_supported(Manager *m);
diff --git a/src/resolve/resolved-resolv-conf.c b/src/resolve/resolved-resolv-conf.c
index ae17aef3ab..4eb5bba660 100644
--- a/src/resolve/resolved-resolv-conf.c
+++ b/src/resolve/resolved-resolv-conf.c
@@ -232,7 +232,7 @@ int manager_write_resolv_conf(Manager *m) {
         if (r < 0)
                 return log_warning_errno(r, "Failed to compile list of DNS servers: %m");
 
-        r = manager_compile_search_domains(m, &domains);
+        r = manager_compile_search_domains(m, &domains, false);
         if (r < 0)
                 return log_warning_errno(r, "Failed to compile list of search domains: %m");