On Mo, 07.10.24 14:15, Alexander Bokovoy (aboko...@redhat.com) wrote:

> > > https://github.com/fedora-selinux/selinux-policy/pull/939#issuecomment-1409217811
> > > No follow up happened on that, sadly.
> > >
> > > I do not see any work done on that yet. Without having SELinux support
> > > properly integrated, I think enabling systemd-homed by default is
> > > premature.
> > >
> > Actually selinux-policy has support for systemd-homed in F41 and F42 since
> > Sep 24th.
>
> Thanks, though this is about the first part (selinux-policy allowing
> systemd-homed to access its own default home directory), while the
> github comment talks about drives that systemd-homed creates for user
> homes. That part needs to be addressed in systemd-homed, if I understand
> correctly, pretty much like we address labeling of auto-created home
> directories in oddjob.

I am pretty sure all files inside of a home dir should carry the same
selinux label, identifying it as a user's file. Because everything
else makes home directories unportable, because local system policy
will leak into the homedirs. Moreover SELinux policy even if it wanted
couldn#t really express fine-grained app policy, since it's a
centralized thing, and we live in a world where apps are built and
distributed outside fedora, with flatpak and stuff. The assumption
that every app comes via fedora, and hence can come with selinux
database/policy also shipped by fedora to match it is just unrealistic
in today's world.

There's an upstream issue about all this:

https://github.com/systemd/systemd/issues/30580

It's kinda stuck, because the overlap of folks deeply interested in
homed and deeply interested in selinux is kinda small to non-existing.

Anyway, if all people want is to stick another "relabel" this call
after we create a new homedir, i am fine with that, but this would be
not be a full fix in my eyes.

Lennart

--
Lennart Poettering, Berlin
-- 
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