# Copyright (c) 2012 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     "Chromium OS debug daemon"
author          "chromium-os-dev@chromium.org"

start on started ui
stop on stopping ui or starting halt or starting reboot
respawn

pre-start script
  TRACING=/sys/kernel/debug/tracing
  # NB: check for tracing dir in case the kernel config changes
  if [ -d "${TRACING}" ]; then
    # enable debugfs-access write access for systrace helper
    for file in buffer_size_kb set_event trace trace_clock trace_marker \
                tracing_on; do
      chgrp debugfs-access ${TRACING}/${file} && chmod g+w ${TRACING}/${file}
    done
  fi
  # NB: only on exynos5
  MALI_HWC_ENABLE=/sys/class/misc/mali0/device/hwc_enable
  if [ -f "${MALI_HWC_ENABLE}" ]; then
    chgrp debugd ${MALI_HWC_ENABLE} && chmod g+w ${MALI_HWC_ENABLE}
  fi
  # NB: copy logs of stateful (re)creation / powerwash
  cp -aP --remove-destination \
     /mnt/stateful_partition/unencrypted/clobber.log \
     /mnt/stateful_partition/unencrypted/clobber-state.log \
     /mnt/stateful_partition/unencrypted/preserve/powerwash_count \
     /var/log/ || true
end script

exec /sbin/debugd