+int manager_watch_busname(Manager *m, const char *name) {
+ char *n;
+ int r;
+
+ assert(m);
+ assert(name);
+
+ if (hashmap_get(m->busnames, name))
+ return 0;
+
+ n = strdup(name);
+ if (!n)
+ return -ENOMEM;
+
+ r = hashmap_put(m->busnames, n, n);
+ if (r < 0) {
+ free(n);
+ return r;
+ }
+
+ return 0;
+}
+
+void manager_drop_busname(Manager *m, const char *name) {
+ Session *session;
+ Iterator i;
+ char *key;
+
+ assert(m);
+ assert(name);
+
+ if (!hashmap_get(m->busnames, name))
+ return;
+
+ /* keep it if the name still owns a controller */
+ HASHMAP_FOREACH(session, m->sessions, i)
+ if (session_is_controller(session, name))
+ return;
+
+ key = hashmap_remove(m->busnames, name);
+ if (key)
+ free(key);
+}
+