Keeps counting time when user has logged out

[Matthew Gregg]

Actually not sure where/how to report bugs since development here seems dead and I am using the version from https://launchpad.net/~mjasnik/+archive/ppa which is ported to 14.04. Anyhow... the issue is that it appears timekpr keeps deducting time after a user has logged out. My fist thought was that a lingering process from that user was still running and making timekpr think the user was still active, but I have confirmed no processes owned by the user are around after logout.

To reproduce...
* Setup a limit for a user.
* Login as that user and then log back out before the limit is reached, making a note of the time remaining.
* Wait some time and then try to log back in. If the limit has not already been reached, again make a note of the time remaining.

[Kenneth Rawlings (rawlink)]

This bug has to do with systemd and loginctl. It seems that when a user logs out, systemd is continuing to think the user is still active. When loginctl is called to get a list of active users it is incorrectly returning all users who have logged in sometime since the machine was booted.

You can reinstate the desired behavior by editing the /usr/bin/users.timekpr script. It's as simple as commenting out lines so the old non-loginctl behavior is used. See example below.

------------------------EXAMPLE-------------------

!/bin/sh

# check if loginctl is available
#which loginctl > /dev/null

# if not - fallback to old method (unique)
#if [ $? -ne 0 ];
#then
        TKPR_USERS=`users | sed 's/ /\n/g' | tr "\\n" " "\ | sed 's/$/\n/'`
#else
# TKPR_USERS=`loginctl list-users | grep " \+[0-9]\+ .\+" | awk '{print $2}' | tr "\\n" " " | sed 's/$/\n/'`
#fi

# now filter out DM's
TKPR_USERS=`echo $TKPR_USERS | sed 's/ /\n/g' | grep -v -e '^gdm$' -e '^kdm$' -e '^lxdm$' -e '^lightdm$' | sort -u | tr "\\n" " "\ | sed 's/$/\n/'`

# output final user list
echo $TKPR_USERS
~