# 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    "Mount the removable media directory using mount-passthrough."
author         "chromium-os-dev@chromium.org"

start on starting arcvm-post-login-services
stop on stopping arcvm-post-login-services

# Do not allow OOM killer to terminate this job since it will break file
# sharing support (which e.g. our Photos app relies on) until ARCVM restarts.
# TODO(b/164939771): Choose a better OOM score which guarantees the Chrome
# browser process is always terminated before this one.
oom score never

# Set VM size soft limit to 1 GB. See arcvm-mount-myfiles.conf for rationale.
# TODO(b/164936284): Specify a lower limit after improving mount-passthrough.
limit as 1000000000 unlimited

expect fork

env SOURCE=/media/removable
env DEST=/run/arcvm/media/removable
env UMASK=007
env ANDROID_ROOT_UID=0
env ANDROID_EXTERNAL_STORAGE_GID=1077

pre-start exec nsenter --mount=/run/namespaces/mnt_concierge --no-fork \
  -- mkdir -p "${DEST}"

exec nsenter --mount=/run/namespaces/mnt_concierge --no-fork \
  -- /usr/sbin/syslog-cat --identifier="${UPSTART_JOB}" -- \
     mount-passthrough-jailed "${SOURCE}" "${DEST}" "${UMASK}" \
     "${ANDROID_ROOT_UID}" "${ANDROID_EXTERNAL_STORAGE_GID}" "full"

post-stop script
  # Termination by SIGKILL can result in a stale mount which needs clean-up.
  nsenter --mount=/run/namespaces/mnt_concierge --no-fork \
    -- umount "${DEST}" || true
end script