Fwd: SMB2 DELETE vs UNLINK

[Ralph Boehme <slow@samba.org>]

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Hello dochelp,

it seems the updates for POSIX unlink and rename made it into MS-FSCC

<https://learn.microsoft.com/en-us/openspecs/windows_protocols/ms-fscc/f1f88b22-15c6-4081-a899-788511ae2ed9>

but I don't see accompanying updates to MS-FSA and, if supported over 
SMB, MS-SMB2.

Is this coming? If this is supported over SMB by Windows it is not 
sufficient to have it burried in MS-FSCC. :)

Thanks!
-slow

-------- Forwarded Message --------
Subject: Re: SMB2 DELETE vs UNLINK
Date: Wed, 9 Apr 2025 00:43:09 +0200
From: Pali Rohár <pali@kernel.org>
To: linux-cifs@vger.kernel.org
CC: Tom Talpey <tom@talpey.com>, Steve French <sfrench@samba.org>, Paulo 
Alcantara <pc@manguebit.com>, Namjae Jeon <linkinjeon@kernel.org>, Ralph 
Boehme <slow@samba.org>

On Friday 27 December 2024 19:51:30 Pali Rohár wrote:
> On Friday 27 December 2024 11:43:58 Tom Talpey wrote:
> > On 12/27/2024 11:32 AM, Pali Rohár wrote:
> > > On Friday 27 December 2024 11:21:49 Tom Talpey wrote:
> > > > Feel free to raise the issue yourself! Simply email "dochelp@microsoft.com".
> > > > Send as much supporting evidence as you have gathered.
> > > > 
> > > > Tom.
> > > 
> > > Ok. I can do it. Should I include somebody else into copy?
> > 
> > Sure, you may include me, tell them I sent you. :)
> > 
> > Tom.
> > 
> 
> Just note for others that I have already sent email to dochelp.

Hello, I have good news!

dochelp on 04/07/2025 updated MS-FSCC documentation and now it contains
the structures to issue the POSIX UNLINK and RENAME operations.

https://learn.microsoft.com/en-us/openspecs/windows_protocols/ms-fscc/f1f88b22-15c6-4081-a899-788511ae2ed9
MS-FSCC 7 Change Tracking

https://learn.microsoft.com/en-us/openspecs/windows_protocols/ms-fscc/2e860264-018a-47b3-8555-565a13b35a45
MS-FSCC 2.4.12 FileDispositionInformationEx has 
FILE_DISPOSITION_POSIX_SEMANTICS

https://learn.microsoft.com/en-us/openspecs/windows_protocols/ms-fscc/4217551b-d2c0-42cb-9dc1-69a716cf6d0c
MS-FSCC 2.4.43 FileRenameInformationEx has FILE_RENAME_REPLACE_IF_EXISTS 
+ FILE_RENAME_POSIX_SEMANTICS

https://learn.microsoft.com/en-us/openspecs/windows_protocols/ms-fscc/ebc7e6e5-4650-4e54-b17c-cf60f6fbeeaa
MS-FSCC 2.5.1 FileFsAttributeInformation has 
FILE_SUPPORTS_POSIX_UNLINK_RENAME

So now both classic Windows DELETE and POSIX UNLINK is available and
documented.

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