finit/test/skel/bin/slay

#!/bin/sh

nm=$1

getpid()
{
    initctl status "$1" |awk '/PID :/{ print $3; }'
}

pid=$(getpid "$nm")
if [ -f oldpid ]; then
    oldpid=$(cat oldpid)
    if [ "$oldpid" = "$pid" ]; then
	echo "Looks bad, wait for it ..."
	sleep 3
	pid=$(getpid "$nm")
	if [ "$oldpid" = "$pid" ]; then
	    echo "Finit did not deregister old PID $oldpid vs $pid"
	    initctl status "$nm"
	    ps
	    echo "Reloading finit ..."
	    initctl reload
	    sleep 1
	    initctl status "$nm"
	    exit 1
	fi
    fi
fi

timeout=50
while [ "$pid" -le 1 ]; do
    sleep 0.1
    # Once Finit gives up on a service it forks the post:script and
    # reports that PID as the service's, so a slay still waiting for
    # the service to come back would kill the script instead.
    st=$(initctl -p status "$nm" 2>/dev/null | awk '/Status/{print $3}')
    if [ "$st" = "crashed" ]; then
	exit 1
    fi
    pid=$(getpid "$nm")
    if [ "$pid" -le 1 ]; then
	timeout=$((timeout - 1))
	if [ "$timeout" -gt 0 ]; then
	    continue
	fi

	if [ $pid -ne 0 ]; then
	    echo "Got a bad PID: $pid, aborting ..."
	    ps
	    sleep 1
	    initctl status "$nm"
	    ps
	fi
	exit 1
    fi
    break
done

echo "$pid" > /tmp/oldpid

#echo "PID $pid, kill -9 ..."
kill -9 "$pid" 2>/dev/null || true