dm_event_handler_create dm_event_handler_destroy dm_event_handler_set_dso dm_event_handler_set_dev_name dm_event_handler_set_uuid dm_event_handler_set_major dm_event_handler_set_minor dm_event_handler_set_event_mask dm_event_handler_get_dso dm_event_handler_get_devname dm_event_handler_get_uuid dm_event_handler_get_major dm_event_handler_get_minor dm_event_handler_get_event_mask dm_event_register_handler dm_event_unregister_handler dm_event_get_registered_device