arc/scripts/arc-stale-directory-remover.conf

# 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 remove-old-arc-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

# The following environment variable is passed from session_manager
# and is imported from the event that starts the job.
import ANDROID_DATA_OLD_DIR

script
  {
    echo "Start arc-stale-directory-remover"
    set -x

    # Do nothing unless the variable is set. Currently this script only handles
    # that directory.
    [ -z "$ANDROID_DATA_OLD_DIR" ] && \
      (echo "\$ANDROID_DATA_OLD_DIR is not set, do nothing." && exit 1)

    if [ -d "$ANDROID_DATA_OLD_DIR" ]; then
      # Remove contents of the directory, /home/root/<hash>/android-data-old/.
      # Note that this script does not remove the directory itself to ensure
      # that RemoveArcData() in session_manager always works regardless of
      # whether this script is running. Also note that the directory does not
      # have any dot files and hence "/*" always matches all entries in the
      # directory.
      nice rm -rf "$ANDROID_DATA_OLD_DIR"/*
    fi
    echo "Done."
  } 2>&1 | logger -t "${UPSTART_JOB}"
end script