[cifs-protocol] [EXTERNAL] Flags field in [MS-SMB2] 2.2.14 SMB2 CREATE Response? - TrackingID#2302140040008793
srenaden at microsoft.com
Tue Feb 21 19:46:48 UTC 2023
Hello Volker, I've arrived at the same interpretation as you and surprised to see that the Flags bit isn't set as expected. Can you run the same test case against a Windows 2019 Server and share the trace with me please ?
Microsoft Windows Open Specifications
From: Michael Bowen <Mike.Bowen at microsoft.com>
Sent: Tuesday, February 14, 2023 4:14 PM
To: Volker.Lendecke at sernet.de <Volker.Lendecke at sernet.de>
Cc: cifs-protocol at lists.samba.org <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
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Escalation Engineer - Microsoft Open Specifications
From: Volker Lendecke <Volker.Lendecke at sernet.de>
Sent: Tuesday, February 14, 2023 12:24 PM
To: Interoperability Documentation Help <dochelp at microsoft.com>
Cc: cifs-protocol at lists.samba.org
Subject: [EXTERNAL] Flags field in [MS-SMB2] 2.2.14 SMB2 CREATE Response?
[ms-smb2] 2.2.14 defines the flags field in the create response as SMB2_CREATE_FLAG_REPARSEPOINT (0x01) when the last component of a file opened is a reparse point.
184.108.40.206 Receiving an SMB2 CREATE Request
confirms this: If Connection.Dialect belongs to the SMB 3.x dialect family and Open.LocalOpen is a reparse point, set the SMB2_CREATE_FLAG_REPARSEPOINT bit in the Flags field.
Attached find a network trace against Windows 2016 (build 14393.5648) that seems to behave differently. Frame 14 returns STOPPED_ON_SYMLINK with an unparsed path length of 0. Frame 15 reopens the file with OPEN_REPARSE_POINT. The FileAttributes field in Frame 16 shows this, but the "flags" field according to [ms-smb2] 2.2.14 is 0.
Can you explain if my interpretation of [ms-smb2] is wrong?
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