[cifs-protocol] Flags field in [MS-SMB2] 2.2.14 SMB2 CREATE Response? - TrackingID#2302140040008793

[Sreekanth Nadendla]

Hi Volker, the flag SMB2_CREATE_FLAG_REPARSEPOINT is set only if reparse point is getting resolved on the server. Ultimately it boils down to what is being asked to open i.e. the underlying file that the symlink is pointing to or it’s definition which is the link file itself ( On windows, a filter driver reads it's contents so that the target file can be opened).

Suggested draft change to the spec is as shown below. We will review other sections and modify them so that the processing rule will be clear.

Section 2.2.14 SMB2 CREATE Response defines the flags field with SMB2_CREATE_FLAG_REPARSEPOINT (0x01). 
. . . . . . . . . . . . . .. . . . . . . . . . . . . .   
This MUST be used when the last component of a file opened is a reparse point, and create request Create Options does NOT contain FILE_OPEN_REPARSE_POINT.



Regards,
Sreekanth Nadendla
Microsoft Windows Open Specifications

-----Original Message-----
From: Volker Lendecke <Volker.Lendecke at sernet.de> 
Sent: Friday, March 3, 2023 2:56 AM
To: Sreekanth Nadendla <srenaden at microsoft.com>
Cc: cifs-protocol at lists.samba.org; Microsoft Support <supportmail at microsoft.com>
Subject: Re: [EXTERNAL] Flags field in [MS-SMB2] 2.2.14 SMB2 CREATE Response? - TrackingID#2302140040008793

Hi Sreekanth,

Am Wed, Feb 22, 2023 at 06:36:33PM +0000 schrieb Sreekanth Nadendla:
> Hi Volker, you can also use a windows 11 install as the SMB server.

apologies for the late response, but the result with Windows 11 is the same. This is a trace against

Edition Windows 11 Pro
Version 21H2
Installiert am  ‎12.‎10.‎2022
Betriebssystembuild     22000.1641
Leistung        Windows Feature Experience Pack 1000.22000.1641.0

as a server. In frame 22 you see FileAttributes a 0x420, which means ARCHIVE and REPARSE_POINT, but the Response Flags says it's not a reparse point.

Thanks,

Volker