Re: [PATCH] generic: Test whether xattrs work on unlinked files

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On Mon, Sep 17, 2018 at 7:56 AM Amir Goldstein <amir73il@xxxxxxxxx> wrote:
>
> On Mon, Sep 17, 2018 at 12:55 AM Richard Weinberger <richard@xxxxxx> wrote:
> >
> > On UBIFS we had an embarrassing bug where xattr operations
> > worked only for files with nlink > 0.
> > Make sure this will never happen again.
> >
> > Signed-off-by: Richard Weinberger <richard@xxxxxx>
> > ---
> > Hi!
> >
> > I'm not sure whether this is worth a new test, maybe we can add it
> > to an existing test? What about generic/020?
>
> We usually add new tests, so existing test wont start failing
> for unpatched kernels.
>
> > Since xfs_io does not support xattrs, we need a new C test helper.t >
>
> I could just as well write:
>
> Since xfs_io does not support xattrs, we need to add xattrs support to xfs_io
>
> but I won't be the one to insist on that.
>
> What you did is you cloned attr_replace_test.c with the tiniest change
> and did not even bother to mention that.
>
> Please add -T flag support to attr_replace_test.c (following xfs_io -T)
> instead of cloning the helper and use that in your new test.
>

Yet simpler, if you don't really need an O_TMPFILE, you don't need a C helper:

exec 5>x
rm x
setfattr -n user.test -v 1  /proc/self/fd/5
exec 5>&-

Thanks,
Amir.



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