I'm trying to do some stuff at logout, and the task can take up to 5 minutes to complete.
If the user chooses Power off or Reboot directly, the script is killed before completion. If the user just chooses Log out, the script is executed with no problems.
I've tried using pam_exec and lightdm property session-cleanup-script to point to my script, but it's the same in both cases.
The script used to do the testing is this one:
#!/bin/bash
touch /tmpfile
for p in $(seq 0 300) ; do
sleep 1
echo $p >> /tmpfile
done
When logging out, all the 300 numbers are written to the file. When shutting down or rebooting directly from within the user session, only 2 or 3 numbers are written, so the script is being killed.
How is handled the shutdown by lightdm? How can I ensure my script is not being killed?
If you propose an alternative approach, please take care that I need to know what user is being logged out and be able to run a script as that user. I also need to notify the user about what's happening, so better stay on X if possible.
