# Copyright 2017 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 sensors for a container"
author        "chromium-os-dev@chromium.org"

start on started arc-boot-continue
stop on stopped arc-boot-continue

# This job does not have script/exec stanza, so it is considered running forever
# once started. See: http://upstart.ubuntu.com/cookbook/#jobs-that-run-forever

post-stop script
  {
    echo "Post-stop arc-sensor"
    set +e -x

    ring_buffer_dir="$(find /sys/devices -path '*cros-ec-ring*' -name buffer)"
    if [ -d "${ring_buffer_dir}" ]; then
      # Disable the ring buffer, nobody will process the entries anymore.
      # Android Sensor HAL has code to disable the buffer, but it is never
      # called.
      echo 0 > "${ring_buffer_dir}/enable"
    fi
  } 2>&1 | logger -t "${UPSTART_JOB}"
end script