-// UNNEEDED int sd_bus_set_exec(sd_bus *bus, const char *path, char *const argv[]);
-// UNNEEDED int sd_bus_get_address(sd_bus *bus, const char **address);
-// UNNEEDED int sd_bus_set_bus_client(sd_bus *bus, int b);
-// UNNEEDED int sd_bus_is_bus_client(sd_bus *bus);
-// UNNEEDED int sd_bus_set_server(sd_bus *bus, int b, sd_id128_t bus_id);
-// UNNEEDED int sd_bus_is_server(sd_bus *bus);
-// UNNEEDED int sd_bus_set_anonymous(sd_bus *bus, int b);
-// UNNEEDED int sd_bus_is_anonymous(sd_bus *bus);
-// UNNEEDED int sd_bus_set_trusted(sd_bus *bus, int b);
-// UNNEEDED int sd_bus_is_trusted(sd_bus *bus);
-// UNNEEDED int sd_bus_set_monitor(sd_bus *bus, int b);
-// UNNEEDED int sd_bus_is_monitor(sd_bus *bus);
-// UNNEEDED int sd_bus_set_description(sd_bus *bus, const char *description);
-// UNNEEDED int sd_bus_get_description(sd_bus *bus, const char **description);
-// UNNEEDED int sd_bus_negotiate_creds(sd_bus *bus, int b, uint64_t creds_mask);
-// UNNEEDED int sd_bus_negotiate_timestamp(sd_bus *bus, int b);
-// UNNEEDED int sd_bus_negotiate_fds(sd_bus *bus, int b);
+#if 0 /// UNNEEDED by elogind
+int sd_bus_set_exec(sd_bus *bus, const char *path, char *const argv[]);
+int sd_bus_get_address(sd_bus *bus, const char **address);
+int sd_bus_set_bus_client(sd_bus *bus, int b);
+int sd_bus_is_bus_client(sd_bus *bus);
+int sd_bus_set_server(sd_bus *bus, int b, sd_id128_t bus_id);
+int sd_bus_is_server(sd_bus *bus);
+int sd_bus_set_anonymous(sd_bus *bus, int b);
+int sd_bus_is_anonymous(sd_bus *bus);
+int sd_bus_set_trusted(sd_bus *bus, int b);
+int sd_bus_is_trusted(sd_bus *bus);
+int sd_bus_set_monitor(sd_bus *bus, int b);
+int sd_bus_is_monitor(sd_bus *bus);
+int sd_bus_set_description(sd_bus *bus, const char *description);
+int sd_bus_get_description(sd_bus *bus, const char **description);
+int sd_bus_negotiate_creds(sd_bus *bus, int b, uint64_t creds_mask);
+int sd_bus_negotiate_timestamp(sd_bus *bus, int b);
+int sd_bus_negotiate_fds(sd_bus *bus, int b);
+#endif // 0