# File control/AccessLog/AccessLog.rb, line 48
  def del_logfile
    pos = @logfile[:pos]
    if (pos < 0 || @params.logfiles.length <= pos) then
      raise 'out of range'
    end
    @params.del_logfile_at(pos)
    @control.set_access_log_params(@params)
    nil
  end