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
25# The default is 10 failures every 5 seconds, but even if we crash early, it is
26# hard to catch that. So here we set the crash rate as 10 failures every 20
27# seconds which will include the default and more.
28respawn
29respawn limit 10 20
30
31expect fork
32
33# Runs the daemon at low/idle IO priority so that updates don't
34# impact system responsiveness.
35exec ionice -c3 update_engine
36
37# Put update_engine process in its own cgroup.
38# Default cpu.shares is 1024.
39post-start script
40  pid=$(status | cut -f 4 -d ' ')
41
42  cgroup_cpu_dir="/sys/fs/cgroup/cpu/${UPSTART_JOB}"
43  mkdir -p "${cgroup_cpu_dir}"
44  echo ${pid} > "${cgroup_cpu_dir}/tasks"
45
46  # Assigns net_cls handle 1:1 to packets generated from update_engine. For
47  # routing and tagging purposes, that value will be redefined in
48  # patchpanel/routing_service.h .
49  cgroup_net_cls_dir="/sys/fs/cgroup/net_cls/${UPSTART_JOB}"
50  mkdir -p "${cgroup_net_cls_dir}"
51  echo ${pid} > "${cgroup_net_cls_dir}/tasks"
52  echo "0x10001" > "${cgroup_net_cls_dir}/net_cls.classid"
53end script
54