# Copyright 2016 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   "Remove stale ARC directories."
author        "chromium-os-dev@chromium.org"

start on started arc-remove-data or arc-booted

# Stop the job on 'stopping ui' because once ui is stopped, ARC data files
# in the user's home directory will not be accessible anyway.
stop on stopping ui

import CHROMEOS_USER

# This job cleans up in the background not to block the user.
nice 10

# Note: This job is used by both ARC and ARCVM.
script
    CHROMEOS_USER_HOME=$(cryptohome-path system "${CHROMEOS_USER}")
    if [ ! -d "${CHROMEOS_USER_HOME}" ]; then
      logger -t "${UPSTART_JOB}" \
        "User home ${CHROMEOS_USER_HOME} does not exist"
      exit 1
    fi
    exec /sbin/minijail0 \
      -c 'cap_dac_override,cap_fowner,cap_dac_read_search+eip' \
      --profile=minimalistic-mountns --uts -e -l -p -N \
      -b /home \
      -k "${CHROMEOS_USER_HOME},${CHROMEOS_USER_HOME},none,MS_BIND|MS_REC" \
      -- /usr/sbin/arc-remove-stale-data
end script