LP#1699972 "session-cleanup-script runs on user selection in greeter"

[bluesabre]

First reported on Launchpad at https://bugs.launchpad.net/lightdm-gtk-greeter/+bug/1699972

LP#0: nicholas (nbros652) wrote on 2017-06-23:

When setting a session-cleanup-script, it runs perfectly fine when a user logs out. However, it also runs when no users are logged in, and a different user is selected from the dropdown menu of user on the login screen.

This is really problematic when, for example, you want to run /sbin/reboot with session-cleanup-script. Not only does the machine reboot when a user logs off, it also reboots when someone attempting to log in selects a different user from the dropdown menu on the login screen.

The script assigned to session-cleanup-script should only run when a user session is terminated. The description for session-cleanup-script reads "Script to run when quitting a user session (runs as root)." Thus, one would assume it should not be running when a different user is selected from the login greeter.