Re: [PATCH smb3-posix-extensions] FSA: allow rename over files with only POSIX opens

Ralph Boehme <[email protected]> Wed, 5 Aug 2026 10:30:06 +0200

Newsgroups	org.kernel.vger.linux-cifs
Message-ID	<[email protected]>

Can you please create a MR on gitlab?

Thanks!

On 8/5/26 10:20 AM, ChenXiaoSong wrote:
> From: ChenXiaoSong <[email protected]>
> 
> Update FileRenameInformation processing for an existing destination.
> Ignore POSIX opens when checking whether the destination is open, so the
> rename can continue if all destination opens use POSIX semantics.
> 
> Keep returning STATUS_ACCESS_DENIED if the destination has one or more
> non-POSIX opens.
> 
> Signed-off-by: ChenXiaoSong <[email protected]>
> ---
>   fsa_posix_extensions.md | 15 +++++++++++++++
>   1 file changed, 15 insertions(+)
> 
> diff --git a/fsa_posix_extensions.md b/fsa_posix_extensions.md
> index e03102d..7dbdf77 100644
> --- a/fsa_posix_extensions.md
> +++ b/fsa_posix_extensions.md
> @@ -617,3 +617,18 @@ Open.GrantedAccess does not incluce FILE_WRITE_ATTRIBUTES and
>   not AccessCheck(SecurityContext, File.SecurityDescriptor, FILE_WRITE_ATTRIBUTES):
>   
>   - the operation MUST be failed with STATUS_CANNOT_DELETE.
> +
> +##### 2.1.4.8.3 FileRenameInformation
> +
> +When processing the following condition from MS-FSA 2.1.5.15.12:
> +
> +- If there was not an oplock to be broken and
> +  **TargetLink.File.OpenList** contains an **Open** with a **Stream**
> +  matching the current **Stream**, the operation MUST be failed with
> +  `STATUS_ACCESS_DENIED`.
> +
> +For this check, the object store MUST consider only matching opens for which
> +**Open.IsPosix** is FALSE. If one or more such opens exist, the operation
> +MUST be failed with `STATUS_ACCESS_DENIED`. If all matching opens have
> +**Open.IsPosix** set to TRUE, this check MUST NOT fail the operation and
> +processing MUST continue as specified in MS-FSA 2.1.5.15.12.

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