[Xfce-bugs] [Bug 8482] script launch by "application autostart" do not get killed when logout

[bugzilla-daemon at xfce.org]

https://bugzilla.xfce.org/show_bug.cgi?id=8482

--- Comment #3 from Vladimir Kudrya <vovik-wfa at bk.ru> ---
As a workaround  I use a script derived from fbpanel xlogout script.
It finds session manager PID and prints it to stdout. There is also a function
to exit. You can test if session is still exist and terminate your script if it
is ended.

See info here: https://bbs.archlinux.org/viewtopic.php?pid=1179199#p1179199

script:
--------------
#!/bin/bash

getsessionpid(){
# got this from fbpanel xlogout script, refined.
# find PID of session manager process to exit when it no longer exists

# get display number
DPY=$(echo $DISPLAY | cut -d ':' -f 2)

# get X pid
XPID=$(echo $(< /tmp/.X${DPY}-lock))

# get pid of xdm (or gdm, kdm, simple xinitrc, etc). usually it's parent of X
XDMPID=$(ps -o ppid --no-headers --pid=$XPID)

# recursivly find child of xdm that was started in home dir -
# it's user's session start up script
pid_scan(){
    unset XDMCHILDREN
    while [ $# != 0 ]; do
        XDMCHILDREN="$XDMCHILDREN $(ps --no-headers -o pid --ppid=$1)"
        shift
    done
    for pid in $XDMCHILDREN; do
        if cwd=$(ls -al /proc/$pid/cwd 2>/dev/null); then
            cwd=`sed 's/.*-> //' <<< $cwd`
            [ "$cwd" = "$HOME" ] && echo $pid && return
        fi
    done
    pids=$XDMCHILDREN
    [ -n "$pids" ] && pid_scan $XDMCHILDREN;

}

SESSIONPID=`pid_scan $XDMPID`

[ -z "$SESSIONPID" ] && echo "No session parent found" >&2 && false
[ -n "$SESSIONPID" ] && echo $SESSIONPID
}

exit-with-session(){
ps -eo pid | grep -qw $SESSIONPID || exit 0
}

getsessionpid
--------------

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