Re: what's next for the linux kernel?

[Nix <nix@esperi.org.uk>]

On Wed, 5 Oct 2005, David Leimbach said:
>> 1) make namespaces joinable in a sane way
>> 2) wait for the shared subtree patch
>> 3) make pam join the per-user-namespace
>> 4) make pam automount tmpfs on the private /tmp
> 
> I'm not sure what you mean by a joinable namespace.  I also am not
> sure I want them :-).

They are namespaces which processes can join. Right now you can do
it by chrooting into /proc/{pid}/root, but this is, as Bodo said,
not a very sane API.

Without this, a user starting two sessions gets two namespaces,
which is profoundly counterintuitive from the user's POV.

> I think of namespaces as being fundamental to the process model and
> that they are inherited from the parent and new ones are created in a
> sort of COW fashion [or at least have similar behavior].

Yes, but you can change them too (that's what e.g. mount() is for!)

> You might want a session namespace instead of a joinable per-process
> namespace but I think that might be a slightly different point of
> view.

I think that's the idea; a filesystem holding namespaces that you're
allowed to chroot() into.

-- 
`Next: FEMA neglects to take into account the possibility of
fire in Old Balsawood Town (currently in its fifth year of drought
and home of the General Grant Home for Compulsive Arsonists).'
            --- James Nicoll
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