Re: Possible issue with linux xattr support?

* Dmitry Chagin <dchagin@freebsd.org> [20230829 21:12]:
> On Tue, Aug 29, 2023 at 07:02:22PM +0200, Felix Palmen wrote:
> > So, using user.* works, using system.* doesn't, and maybe a bit
> > surprising(?), dumping all attributes which by default excludes the
> > system namespace doesn't work either.
> > 
> 
> As expected, the second patch intended to allow access to system
> namespace in jailed env.

Not exactly, according to the manual, 'getfattr -d' *excludes* the
system namespace by default, so I would have expected it to work. But
maybe that's an issue with the getfattr tool itself.

> > I still wonder, is the first patch needed anyways? Maybe I fail to
> > understand something here. Won't it map *every* EPERM to ENOSUP and
> > can't this be an issue?
> > 
> 
> fine, thanks. Gnu tools running under unprivileged user will fail, eg
> ls, which uses getfattr() to get the posix acl

Ah, I see, that would still break "Linux jails" then...

Thanks again for quickly fixing this! Can this still make 14.0-RELEASE?

Cheers, Felix

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