Re: [PATCH v1] xfstests: filter the default EA

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On Wed, Dec 19, 2018 at 8:17 PM Xiaoli Feng <xifeng@xxxxxxxxxx> wrote:
>
> Hi Christoph,
>
> ----- Original Message -----
> > From: "Christoph Hellwig" <hch@xxxxxxxxxxxxx>
> > To: "XiaoLi Feng" <xifeng@xxxxxxxxxx>
> > Cc: fstests@xxxxxxxxxxxxxxx
> > Sent: Wednesday, December 19, 2018 3:18:34 PM
> > Subject: Re: [PATCH v1] xfstests: filter the default EA
> >
> > On Wed, Dec 19, 2018 at 11:44:28AM +0800, XiaoLi Feng wrote:
> > > From: xiaoli feng <xifeng@xxxxxxxxxx>
> > >
> > > For some filesystems, such as CIFS, the file or directory has the
> > > default extend attribute. It makes these tests generic/020
> > > generic/337 generic/377 failed. Now add this patch to filter the
> > > default EA.
> >
> > What is "the default EA"?  This sounds like a CIFS bug to me.
>
> the default EA means the new file or directory has extended attributes.
>
> # touch cifs/file
> # getfattr cifs/file
> # file: cifs/file
> user.security.selinux

user.security.selinux is not a cifs EA.  This "default EA" is not
handled/returned by CIFS.

cifs.ko can save/return new EAs set by the user and even return a
couple pseudo-EAs (cifs.dosattrib for example) if that EA is queried
explicitly in order to return metadata (important flags needed for
backup etc.) - but this "user.security.selinux" "default EA" is not
returned by the cifs.ko code.


-- 
Thanks,

Steve



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