#!/bin/sh

# /etc/rc.d/rc.cgmanager - start/stop the cgroup manager

if [ -f /etc/default/cgmanager ]; then
  # get cgmanager options if specified
  . /etc/default/cgmanager
fi

start_cgmanager() {
  # Kill any existing cgproxy
  /bin/sh /etc/rc.d/rc.cgproxy stop >/dev/null 2>&1 || true
  # check whether to start cgproxy or cgmanager
  if /usr/sbin/cgproxy --check-master; then
    if [ -x /etc/rc.d/rc.cgproxy -a ! -r /run/cgmanager.pid ]; then
      NESTED=yes /etc/rc.d/rc.cgproxy start || true && { exit 0; }
    else
      # If we are here, either cgmanager is already running (in which case
      # we don't want to run it again), or rc.cgproxy is not executable
      # (in which case we don't want to run it).
      echo "Error:  rc.cgproxy is not executable, or attempting to start multiple instances of cgmanager"
      exit 1
    fi
  fi
  echo "Starting cgmanager:  /usr/sbin/cgmanager --daemon"
  /usr/sbin/cgmanager --daemon
}

stop_cgmanager() {
  # If the cgmanager stops, the proxy must also stop
  /bin/sh /etc/rc.d/rc.cgproxy stop >/dev/null 2>&1 || true
  echo "Stopping cgmanager."
  /bin/kill $(cat /run/cgmanager.pid 2>/dev/null) 2>/dev/null
  /usr/bin/pkill cgmanager 2>/dev/null
  rm -f /run/cgmanager.pid
}

restart_cgmanager() {
  stop_cgmanager
  sleep 1
  start_cgmanager
}

case "$1" in
'start')
  start_cgmanager
  ;;
'stop')
  stop_cgmanager
  ;;
'restart')
  restart_cgmanager
  ;;
*)
  echo "usage $0 start|stop|restart"
esac