int bus_kernel_write_message(sd_bus *bus, sd_bus_message *m, bool hint_sync_call);
int bus_kernel_read_message(sd_bus *bus, bool hint_priority, int64_t priority);
-int bus_kernel_open_bus_fd(const char *bus);
+int bus_kernel_open_bus_fd(const char *bus, char **path);
int bus_kernel_make_starter(int fd, const char *name, bool activating, bool accept_fd, BusNamePolicy *policy, BusNamePolicyAccess world_policy);
int bus_kernel_create_bus(const char *name, bool world, char **s);