Lennart Poettering <lenn...@poettering.net> on Wed, 15 Jun 2011 21:17:15
+0200:
> On Fri, 27.05.11 16:45, Christian Hesse (l...@eworm.de) wrote:
>
> > Hello everybody,
> >
> > I've set up pam to use pam_systemd.so. This way tmux and screen work,
> > but other processes started in this session will continue to run after
> > the user logs out.
> >
> > I would like to set kill-user=1 or kill-session=1, but that breaks tmux
> > and screen.
> > What is the correct fix for that? Do these applications need
> > support for pam? Calling pam_systemd themself and getting their own
> > cgroup could workaround this, doesn't it?
>
> Yes, if screen should be considered an independent session then it
> should invoke the PAM session hooks and systemd will do the right thing.
>
> In order not to break screen we currently do not set kill-user=1 or
> kill-session=1.
>
> Note that in some cases it might be a good thing to kill screen sessions
> when the user otherwise logs out (think university, where students not
> logged in on a workstation should not be able to waste CPU), in other
> cases its a bad thing however (i.e. in yours). That means it must be
> configurable whether screen is considered an independent session or not.
Configuring this is up to the administrator. He/She would be able to
configure this in /etc/pam.d/{screen,tmux}.
I've asked in the tmux mailing list. Seems like the devs tend to not include
pam support:
> I'm not convinced tmux should need PAM support to do something perfectly
> normal.
And:
> I don't think this is something the application should need to
> configure, you should be able to configure it in systemd [...]
However...
I have a script that creates a new cgroup via libcgroup [0] and
launches tmux within this cgroup. If anybody is interested please take
a look at my Arch package [1].
IMHO this is just a workaround.
Sadly my programming skills did not allow to add pam support myself. If
anybody has a patch I would like to test.
[0] http://libcg.sf.net/
[1] http://arch.lugor.de/eworm/x86_64/tmux-cgroup-0.0.2-1-any.pkg.tar.xz
--
Schoene Gruesse
Chris
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