def METHOD_NAME(args: rdf_read_low_level.ReadLowLevelRequest,
              pre_padding: int) -> rdf_read_low_level.ReadLowLevelRequest:
  """Aligns the offset and updates the length according to the pre_padding.
  It returns a copy of the flow arguments with the aligned offset value,
  updated length.
  The alignment means more data than requested can be read.
  From a software architecture point of view, this logic should be
  platform-specific than a shared client action. Thus clients in platforms
  that require the alignment would have this, and others would not. However,
  for simplicity we're going with the same implementation in all platforms.
  - Linux does not require sector alignment for reads.
  - Windows requires sector alignment for raw device access.
  - Mac raw disk devices are not seekable to the end and have no size, so the
    alignment logic helps.
  Args:
    args: Original ReadLowLevelRequest sent to this ClientAction.
    pre_padding: Bytes to remove from the offset and add to the length.
  Returns:
    A copy of the flow args with the aligned offset and length.
  """
  # Due to alignment we will read some more data than we need to.
  aligned_params = args.Copy()
  aligned_params.offset = args.offset - pre_padding
  aligned_params.length = args.length + pre_padding
  return aligned_params