Re: [PATCH] ksmbd: add default data stream name in FILE_STREAM_INFORMATION

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Patch looks correct - tentatively merged pending testing (and additional review)

On Sun, Sep 19, 2021 at 11:47 PM Steve French <smfrench@xxxxxxxxx> wrote:
>
> On Sat, Sep 18, 2021 at 9:06 PM Tom Talpey <tom@xxxxxxxxxx> wrote:
> >
> > This doesn't appear to be what's documented in MS-FSA section 2.1.5.11.29.
> > There, it appears to call for returning an empty stream list,
> > and STATUS_SUCCESS, when no streams are present.
>
> I tried a quick test to Windows and it does appear to return $DATA
> stream by default:
>
> # ./smbinfo filestreaminfo /mnt/junk
> Name: ::$DATA
> Size: 179765 bytes
> Allocation size: 196608 bytes
>
> when I tried the same thing to a directory on a share mounted to Windows 10
> (NTFS), I get no streams returned.
>
> So it does look like default stream ($DATA) is only returned for files
>
> > Also, why does the code special-case directories? The conditionals
> > on StreamSize and StreamAllocation size are entirely redundant,
> > after the top-level if (!S_ISDIR...), btw.
> >
> > I'd suggest asking Microsoft dochelp for clarification before
> > implementing this.
> >
> > Tom.
> >
> > On 9/18/2021 8:02 AM, Namjae Jeon wrote:
> > > Windows client expect to get default stream name(::DATA) in
> > > FILE_STREAM_INFORMATION response even if there is no stream data in file.
> > > This patch fix update failure when writing ppt or doc files.
>
>
>
>
> --
> Thanks,
>
> Steve



-- 
Thanks,

Steve



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