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 17 description "System software update service" 18 author "chromium-os-dev (at] 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. 23 start on starting system-services 24 stop on stopping system-services 25 respawn 26 27 expect fork 28 29 # Runs the daemon at low/idle IO priority so that updates don't 30 # impact system responsiveness. 31 exec ionice -c3 update_engine 32 33 # Put update_engine process in its own cgroup. 34 # Default cpu.shares is 1024. 35 post-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" 39 end script 40
