[systemd-bugs] [Bug 62866] Users logging in gets previous user's XDG_RUNTIME_DIR

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=62866

Lennart Poettering <lennart at poettering.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|REOPENED                    |RESOLVED
         Resolution|---                         |NOTOURBUG

--- Comment #3 from Lennart Poettering <lennart at poettering.net> ---
Jeez. Not sure why I am even doing this, but here's the code of slim:

http://git.berlios.de/cgi-bin/gitweb.cgi?p=slim;a=blob;f=app.cpp;h=b1b9d98d596505866d8a3bada8c90186c6a226e2;hb=HEAD

If you check that out you will see that it reuses the PAM session process. i.e.
After the session is closed it simply restarts the main logic from the same
process. And that's what is not OK. It has to terminate it and run the next
login dialog from a new process.

Anyway, what slim does here is broken, and it will break with systemd, and it
will fuck up resource limits, audit trails, security labels, yadda yadda. So,
yeah, if you don't use any of that in your PAM stack, then sure you have a good
chance things won't explode into your face right-away, but it still isn't
correct.

There's nothing to fix here in systemd, it's slim that is at fault here.
Closing.

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