[systemd-devel] [PATCH weston] doc/systemd: system service example

Pekka Paalanen ppaalanen at gmail.com
Thu Nov 30 12:57:16 UTC 2017

On Thu, 30 Nov 2017 13:29:22 +0100
Lennart Poettering <lennart at poettering.net> wrote:

> On Do, 30.11.17 12:09, Pekka Paalanen (ppaalanen at gmail.com) wrote:
> > > Hmm, what is this about?
> > > 
> > > This is racy, as the session ID is not really reliably predictable,
> > > and is synthesized in different contexts in different ways, for
> > > example depnding on whether audit is enabled in the kernel it might be
> > > session-1.scope rather than session-c1.scope.  
> > 
> > Hi Lennart,
> > 
> > this is the bit Martyn talked you in person some time ago, maybe Martyn
> > could refresh your memory?  
> Oh, did we? I don't remember, sorry!

Hi Lennart,

no worries. I don't remember what I did early this week...

> > > Piggy-backing on "login" is a bad idea. "login" is a text tool, and
> > > thus the PAM rules for it usually pull in some TTY specific PAM
> > > modules. YOu shoudl really use your own PAM fragment here, and
> > > configure only the bits you need.  
> > 
> > Ok. Is there any guide or example I could point people to, so that they
> > can write their own stuff correctly? Any example I could put into
> > Weston docs?  
> Unfortunately PAM is awful and highly distro-specific. It's not really
> possible to write PAM snippets that work generically on all
> distros. Sorry. The distros even patch PAM differently, so that
> slightly difference constructs are available...

That's the feeling I already got. Following Mantas' suggestion and
commenting it line by line like I did for the service unit is probably
the best we could do then.

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