#!/bin/sh
# Copyright 2018 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.

# Run apk-cache-cleaner with minijail0.
# 656360 is an Android system UID/GID

set -e

# See src/platform2/arc/setup/arc_setup.cc for more info about these values.
SYSTEM_UID="656360"
SYSTEM_GID="656360"

# Bind cache directory as writable. Add /var directory to follow /etc/localtime.
# Enter new pid and cgroup namespaces. Setting no new privileges.
# Restrict caps to 0. Entering new mount namespace, new UTS namespace,
# new IPC namespace and new network namespace.
exec minijail0 --profile minimalistic-mountns \
  -k none,/mnt,tmpfs \
  -k none,/mnt/stateful_partition,tmpfs \
  -k none,/mnt/stateful_partition/unencrypted,tmpfs \
  -b /mnt/stateful_partition/unencrypted/apkcache,\
/mnt/stateful_partition/unencrypted/apkcache,1 \
  -k none,/var,tmpfs \
  -k none,/var/lib,tmpfs \
  -b /var/lib/timezone,/var/lib/timezone \
  -p -N -n -c 0 -v -r --uts -l -e \
  -S /usr/share/policy/apk-cache-cleaner-seccomp.policy \
  -u "${SYSTEM_UID}" -g "${SYSTEM_GID}" -- /usr/sbin/apk-cache-cleaner