Function nvme_lockdown 

pub unsafe extern "C" fn nvme_lockdown(
    args: *mut nvme_lockdown_args,
) -> c_int

nvme_lockdown() - Issue lockdown command @args: &struct nvme_lockdown_args argument structure

Return: The nvme command status if a response was received (see &enum nvme_status_field) or -1 with errno set otherwise.