Re: [PATCH v2 1/1] xattr: Allow user.* xattr on symlink and special files

[Vivek Goyal]

On Fri, Jul 09, 2021 at 04:36:33PM -0400, Theodore Ts'o wrote:
> On Fri, Jul 09, 2021 at 08:34:41AM -0700, Casey Schaufler wrote:
> > >> One question, do all filesystem supporting xattrs deal with setting them
> > >> on symlinks/device files correctly?
> > > Wrote a simple bash script to do setfattr/getfattr user.foo xattr on
> > > symlink and device node on ext4, xfs and btrfs and it works fine.
> > 
> > How about nfs, tmpfs, overlayfs and/or some of the other less conventional
> > filesystems?
> 
> As a suggestion, perhaps you could take your bash script and turn it
> into an xfstests test so we can more easily test various file systems,
> both now and once the commit is accepted, to look for regressions?

Sounds good. I see there is already an xattr test (generic/062) which
is broken after my patch. Current test expects that user.* xattrs will
fail on symlink/special device.

I will probably have to query kernel version and modify test so that
expect failure before a certain version and success otherwise.

Thanks
Vivek