[cifs-protocol] Response for format of SMB2 ExtA request in create

Hongwei Sun hongweis at microsoft.com
Thu Jun 5 20:52:32 GMT 2008


Tridge,

   I post the following response to the post:  http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=3383775&SiteID=1

Response:

For the data buffer format of SMB2_CREATE_BUFFER_EA , please refer to FileFullEaInformation defined in   [MS-FSCC] 2.4.15.

There are also several buffer alignment requirements regarding  SMB2 EA context command you need to be aware of:


1.       For a SMB2_CREATE_CONTEXT request,   it must be 8-byte aligned.

(already  documented in [MS-SMB2] 2.2.13.2)



2.       Within a SMB2_CREATE_CONTEXT request, DataOffset  must be 8-byte aligned

(already  documented in [MS-SMB2] 2.2.13.2)



3.       For EA lists within SMB2_CREATE_EA_BUFFER context data buffer, NextEntryOffset must be 4-byte aligned.

 ([MS-FSCC] 2.4.15 will be updated).

 Please  let  us know if the problem is solved after meeting the alignment requirements above.  If not,  please capture network trace so we can do further investigation.

 Thanks!

----------------------------------------------------------
Hongwei  Sun - Support Escalation Engineer
DSC Protocol  Team, Microsoft
hongweis at microsoft.com
Tel:  469-7757027 x 57027
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