Start a child process in a new session

[Christoph Pleger <christoph.pleger@cs.uni-dortmund.de>]

Hello,

when I start a child process with fork(), it seems that the new process 
runs in the same session as the parent process, due to what loginctl 
thinks, even after a call of setsid. Especially, running '/bin/login -f 
cpleger' results in the following message in /var/log/auth.log:

pam_systemd(login:session): Not creating session: Already running in a 
session or user slice

Does anybody know if and how a child process can be created in a 
completely new session, regarding to what pam_systemd and loginctl think 
about it?

Viele Grüße
  Christoph