# Copyright 2020 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     "Update flag to enable UserDataAuth from Finch"
author          "chromium-os-dev@chromium.org"

start on starting system-services
stop on stopping system-services

# This service is in charge of querying Chrome Features service to check if
# UserDataAuth is enabled according to finch. Then, it'll write the result to
# a file, which is checked in cryptohomed.conf by shall-use-userdataauth.sh
# and the appropriate flags will be added to cryptohomed on startup.
# The actual query and set flag operation is done by the
# update_userdataauth_from_features.sh shell script.

# Note that when cryptohome is starting, the chrome features service may not
# be reliably available, so this script might run a slight bit later than
# cryptohomed startup, and it will only take effect on the next reboot.

# Doesn't matter much if this gets killed due to oom.
oom score 0

# as for address space, that is vm size. The limit for this task is 150MB.
limit as 150000000 unlimited

# Update the flag at start.
pre-start exec /usr/libexec/cryptohome/update_userdataauth_from_features.sh

# Update every 1 hour, this is so that if the configuration changes halfway
# during the current boot, we'll likely have the new configuration activated on
# the next reboot instead of the next next reboot.
exec periodic_scheduler --period=3600 --timeout=600 \
    --task_name=update_userdataauth \
    -- /usr/libexec/cryptohome/update_userdataauth_from_features.sh