init/upstart/test-init/cros-payloads.conf

# 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    "Install payloads for Chrome OS test and factory software"
author         "chromium-os-dev@chromium.org"

# `cros_payload` is a system to maintain and install file or block device
# resources, especially for Chrome OS factory software.
# This upstart job will run and clean the installer stubs prepared by
# cros_payload. Read go/cros_payload for more details.

start on stopping startup
task

script
  PAYLOADS="/usr/local/opt/cros_payloads"
  INSTALL_DIR="${PAYLOADS}/install"
  # To make sure the log is always read-able (i.e., not in encrypted stateful
  # partition) for debugging, use a separate log file.
  LOG_FILE="${INSTALL_DIR}/log"

  if [ ! -d "${INSTALL_DIR}" ]; then
    exit
  fi
  cd "${PAYLOADS}"

  for script in "${INSTALL_DIR}"/*.sh; do
    if [ ! -f "${script}" ]; then
      continue
    fi

    echo "$(date): Installing [${script}]..." >>"${LOG_FILE}"
    if ! sh "${script}" >>"${LOG_FILE}" 2>&1; then
      continue
    fi

    # Unstable system may crash and reboot unexpectedly so we have to sync
    # and wait for a while, make sure the installation was completed, before
    # being able to remove the installation stubs safely.
    (sync && sleep 3 && rm -f "${script}") &
  done

  # Wait for all background process to complete.
  wait
end script