Re: [EXTERNAL] Fwd: SMB2 DELETE vs UNLINK - TrackingID#2504090040009564

[Tom Talpey <tom@talpey.com>]

Thank you Michael and yes, processing rules in the SMB and filesystem
components are necessary. To which I'll add, which Windows SKUs actually
perform them (behavior notes).

Tom.

On 4/9/2025 5:57 PM, Michael Bowen wrote:
> [DocHelp to bcc]
> 
> Hi Ralph,
> 
> Thanks for your question about SMB2. We've created case number 2504090040009564 to track this issue. One of our engineers will contact you soon.
> 
> Best regards,
> Michael Bowen
> Microsoft Open Specifications Support
> 
> -----Original Message-----
> From: Ralph Boehme <slow@samba.org>
> Sent: Tuesday, April 8, 2025 11:51 PM
> To: Interoperability Documentation Help <dochelp@microsoft.com>
> Cc: smfrench <smfrench@gmail.com>; tom <tom@talpey.com>; Pali Rohár <pali@kernel.org>; CIFS <linux-cifs@vger.kernel.org>
> Subject: [EXTERNAL] Fwd: SMB2 DELETE vs UNLINK
> 
> 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.