login_manager/init/ui-collect-machine-info.conf

# Copyright 2014 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   "Collect machine information for session_manager"
author        "chromium-os-dev@chromium.org"

# This job collects machine information and places it in a file. It is
# then pushed to session_manager by ui-init-late.

# Start after the system is mostly up and running, which also implies
# that the VPD has been read and the udev database is fully initialized.
start on started system-services

env UI_MACHINE_INFO_FILE=/run/session_manager/machine-info

script
  # Just continue if one of the commands below fails.
  set +e

  # Grab full VPD data from dump_vpd_log, which contains the machine
  # serial number and echo group code.
  dump_vpd_log --full --stdout > "${UI_MACHINE_INFO_FILE}"

  # Grab the disk serial number from the udev database.
  ROOTDEV=$(rootdev -s -d || true)
  udevadm info --query=property --name="${ROOTDEV}" |
      awk -F = '/^ID_SERIAL=/ { print "root_disk_serial_number=" $2 }' \
      >> "${UI_MACHINE_INFO_FILE}"
end script