recovery_backend.py 文件源码

def create_dbus_server(cls, session_bus=False):
        '''Return a D-BUS server backend instance.

        Normally this connects to the system bus. Set session_bus to True to
        connect to the session bus (for testing).

        '''
        backend = Backend()
        dbus.mainloop.glib.DBusGMainLoop(set_as_default=True)
        if session_bus:
            backend.bus = dbus.SessionBus()
            backend.enforce_polkit = False
        else:
            backend.bus = dbus.SystemBus()
        try:
            backend.dbus_name = dbus.service.BusName(DBUS_BUS_NAME, backend.bus)
        except dbus.exceptions.DBusException as msg:
            logging.error("Exception when spawning dbus service")
            logging.error(msg)
            return None
        return backend

    #
    # Internal methods
    #