[cifs-protocol] [REG:120050921000038] Clarification on type of offset fields in SMB2_READ/SMB2_WRITE.

[Jeremy Allison]

On Mon, May 11, 2020 at 07:01:19PM +0000, Jeff McCashland wrote:
> Hi Jeremy,
> 
> [MS-FSA] describes the operation of the underlying file store, roughly how NTFS works. NTFS will accept negative Offset writes and treat them as documented in [MS-FSA]. However, SMB2 will return STATUS_INVALID_PARAMETER if SMB2_READ or SMB2_WRITE Offset are < 0. SMB2 will not send a Write request to the underlying file store with a negative Offset. 
> 
> I hope that helps!

Thanks Jeff, that's extremely helpful !