# Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

description   "Start the Chromium OS power daemon"
author        "chromium-os-dev@chromium.org"

start on x-started
stop on stopping ui or starting halt or starting reboot

env HOME=/home/chronos
env LOG_DIR=/var/log/power_manager
env RUN_DIR=/var/run/power_manager
env PREFS_DIR=/var/lib/power_manager
env DEFAULT_PREFS_DIR=/usr/share/power_manager
env XAUTHORITY=/home/chronos/.Xauthority
env DISPLAY=:0.0
env USER_ID=1000

respawn
respawn limit 3 10  # if the job respawns 3 times in 10 seconds, stop trying.

script
  # Run a single mkdir if either of our dirs is missing.
  if [ ! -d ${PREFS_DIR} -o ! -d ${LOG_DIR} ]; then
    mkdir -p ${LOG_DIR} ${PREFS_DIR}
    chown ${USER_ID} ${LOG_DIR} ${PREFS_DIR}
  fi

  # Set ownership of backlight files; make sure to handle the case where
  # no backlight files exist.
  BACKLIGHTS=$(echo /sys/class/backlight/*/*)
  if [ "${BACKLIGHTS}" = '/sys/class/backlight/*/*' ]; then
    unset BACKLIGHTS
  fi
  chown ${USER_ID} /sys/power/state ${BACKLIGHTS}

  # Start the powerd in a jail with chronos UID; note that we need full path
  # to powerd because minijail doesn't look at the PATH.
  cd ${HOME}
  exec minijail --uid=${USER_ID} --                                         \
    /usr/bin/powerd                                                         \
      --prefs_dir=${PREFS_DIR}                                              \
      --default_prefs_dir=${DEFAULT_PREFS_DIR}                              \
      --log_dir=${LOG_DIR}                                                  \
      --run_dir=${RUN_DIR}                                                  \
    > ${LOG_DIR}/powerd.out 2>&1
end script