1#
2# Copyright (C) 2012 The Android Open Source Project
3#
4# Licensed under the Apache License, Version 2.0 (the "License");
5# you may not use this file except in compliance with the License.
6# You may obtain a copy of the License at
7#
8#      http://www.apache.org/licenses/LICENSE-2.0
9#
10# Unless required by applicable law or agreed to in writing, software
11# distributed under the License is distributed on an "AS IS" BASIS,
12# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13# See the License for the specific language governing permissions and
14# limitations under the License.
15#
16
17description     "System software update service"
18author          "chromium-os-dev@chromium.org"
19
20# N.B. The chromeos-factoryinstall ebuild edits the 'start on' line so as
21# to disable update_engine in factory images.  Do not change this without
22# also updating that reference.
23start on starting system-services
24stop on stopping system-services
25respawn
26
27expect fork
28
29# Runs the daemon at low/idle IO priority so that updates don't
30# impact system responsiveness.
31exec ionice -c3 update_engine
32
33# Put update_engine process in its own cgroup.
34# Default cpu.shares is 1024.
35post-start script
36  cgroup_dir="/sys/fs/cgroup/cpu/${UPSTART_JOB}"
37  mkdir -p "${cgroup_dir}"
38  echo $(status | cut -f 4 -d ' ') > "${cgroup_dir}/tasks"
39end script
40