ippusb_manager/etc/init/ippusb-post-upstart-socket-bridge.conf

# Copyright 2017 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 "Prepare for ippusb, after upstart-socket-bridge"

start on started upstart-socket-bridge

# Set the owners for the socket. Since the socket is created by
# upstart-socket-bridge based on the umask (755) we need to manually change it.
script
  ippusb_socket="/run/ippusb/ippusb_manager.sock"
  ippusb_group="ippusb"
  ippusb_user="ippusb"

  # We want to retry, in case upstart-socket-bridge hasn't finished creating our
  # socket for us yet.
  n=0
  while [ $((n += 1)) -lt 10 ]; do
    chown "${ippusb_user}":"${ippusb_group}" "${ippusb_socket}" && \
      chmod 770 "${ippusb_socket}" && exit 0
    sleep 1
  done
  exit 1
end script