214 lines
6.9 KiB
Plaintext
214 lines
6.9 KiB
Plaintext
# Copyright (C) 2021 The Android Open Source Project
|
|
#
|
|
# init.rc for microdroid. This contains a minimal script plus basic service definitions (e.g. apexd)
|
|
# needed for microdroid to run.
|
|
# TODO(b/179340780): support APEX init scripts
|
|
#
|
|
# IMPORTANT: Do not create world writable files or directories.
|
|
# This is a common source of Android security bugs.
|
|
#
|
|
|
|
import /init.environ.rc
|
|
|
|
# Cgroups are mounted right before early-init using list from /etc/cgroups.json
|
|
on early-init
|
|
# set RLIMIT_NICE to allow priorities from 19 to -20
|
|
setrlimit nice 40 40
|
|
|
|
start ueventd
|
|
|
|
on init
|
|
# Mount binderfs
|
|
mkdir /dev/binderfs
|
|
mount binder binder /dev/binderfs stats=global
|
|
chmod 0755 /dev/binderfs
|
|
|
|
symlink /dev/binderfs/binder /dev/binder
|
|
symlink /dev/binderfs/vndbinder /dev/vndbinder
|
|
|
|
chmod 0666 /dev/binderfs/binder
|
|
chmod 0666 /dev/binderfs/vndbinder
|
|
|
|
# Prepare cpusets that are pre-defined by Android. Inside Microdroid, these however don't mean
|
|
# much because the mapping from vCPUs to physical CPUs are quite flexible; a VM can be started
|
|
# with any number of vCPUs and we in general can't be sure that vCPU N is a big core or a little
|
|
# core. These nodes are provided just to satisfy the code which puts a PID to a specific cpuset.
|
|
mkdir /dev/cpuset/foreground
|
|
copy /dev/cpuset/cpus /dev/cpuset/foreground/cpus
|
|
copy /dev/cpuset/mems /dev/cpuset/foreground/mems
|
|
mkdir /dev/cpuset/background
|
|
copy /dev/cpuset/cpus /dev/cpuset/background/cpus
|
|
copy /dev/cpuset/mems /dev/cpuset/background/mems
|
|
mkdir /dev/cpuset/system-background
|
|
copy /dev/cpuset/cpus /dev/cpuset/system-background/cpus
|
|
copy /dev/cpuset/mems /dev/cpuset/system-background/mems
|
|
|
|
chown system system /dev/cpuset
|
|
chown system system /dev/cpuset/foreground
|
|
chown system system /dev/cpuset/background
|
|
chown system system /dev/cpuset/system-background
|
|
chown system system /dev/cpuset/tasks
|
|
chown system system /dev/cpuset/foreground/tasks
|
|
chown system system /dev/cpuset/background/tasks
|
|
chown system system /dev/cpuset/system-background/tasks
|
|
|
|
chmod 0664 /dev/cpuset/tasks
|
|
chmod 0664 /dev/cpuset/foreground/tasks
|
|
chmod 0664 /dev/cpuset/background/tasks
|
|
chmod 0664 /dev/cpuset/system-background/tasks
|
|
|
|
start servicemanager
|
|
|
|
start vendor.dice-microdroid
|
|
start diced
|
|
|
|
mkdir /mnt/apk 0755 system system
|
|
mkdir /mnt/extra-apk 0755 root root
|
|
# Microdroid_manager starts apkdmverity/zipfuse/apexd
|
|
start microdroid_manager
|
|
|
|
# restorecon so microdroid_manager can create subdirectories
|
|
restorecon /mnt/extra-apk
|
|
|
|
# Wait for apexd to finish activating APEXes before starting more processes.
|
|
wait_for_prop apexd.status activated
|
|
perform_apex_config
|
|
|
|
# Notify to microdroid_manager that perform_apex_config is done.
|
|
# Microdroid_manager shouldn't execute payload before this, because app
|
|
# payloads are not designed to run with bootstrap bionic
|
|
setprop apex_config.done true
|
|
|
|
setprop ro.debuggable ${ro.boot.microdroid.debuggable:-0}
|
|
|
|
on init && property:ro.boot.microdroid.debuggable=1
|
|
# Mount tracefs (with GID=AID_READTRACEFS)
|
|
mount tracefs tracefs /sys/kernel/tracing gid=3012
|
|
|
|
on init && property:ro.boot.logd.enabled=1
|
|
# Start logd before any other services run to ensure we capture all of their logs.
|
|
start logd
|
|
|
|
on init && property:ro.boot.adb.enabled=1
|
|
start adbd
|
|
|
|
on load_persist_props_action && property:ro.boot.logd.enabled=1
|
|
start logd
|
|
start logd-reinit
|
|
|
|
# Mount filesystems and start core system services.
|
|
on late-init
|
|
trigger early-fs
|
|
|
|
# Mount fstab in init.{$device}.rc by mount_all command. Optional parameter
|
|
# '--early' can be specified to skip entries with 'latemount'.
|
|
# /system and /vendor must be mounted by the end of the fs stage,
|
|
# while /data is optional.
|
|
trigger fs
|
|
trigger post-fs
|
|
|
|
# Mount fstab in init.{$device}.rc by mount_all with '--late' parameter
|
|
# to only mount entries with 'latemount'. This is needed if '--early' is
|
|
# specified in the previous mount_all command on the fs stage.
|
|
# With /system mounted and properties form /system + /factory available,
|
|
# some services can be started.
|
|
trigger late-fs
|
|
|
|
trigger post-fs-data
|
|
|
|
# Load persist properties and override properties (if enabled) from /data.
|
|
trigger load_persist_props_action
|
|
|
|
trigger early-boot
|
|
trigger boot
|
|
|
|
on post-fs
|
|
# Once everything is setup, no need to modify /.
|
|
# The bind+remount combination allows this to work in containers.
|
|
mount rootfs rootfs / remount bind ro nodev
|
|
|
|
# TODO(b/185767624): change the hard-coded size?
|
|
mount tmpfs tmpfs /data noatime nosuid nodev rw size=128M
|
|
|
|
# We chown/chmod /data again so because mount is run as root + defaults
|
|
chown system system /data
|
|
chmod 0771 /data
|
|
|
|
# We restorecon /data in case the userdata partition has been reset.
|
|
restorecon /data
|
|
|
|
# set up misc directory structure first so that we can end early boot
|
|
# and start apexd
|
|
mkdir /data/misc 01771 system misc
|
|
# work around b/183668221
|
|
restorecon /data/misc
|
|
|
|
mkdir /data/misc/authfs 0700 root root
|
|
start authfs_service
|
|
|
|
on late-fs && property:ro.debuggable=1
|
|
# Ensure that tracefs has the correct permissions.
|
|
# This does not work correctly if it is called in post-fs.
|
|
chmod 0755 /sys/kernel/tracing
|
|
chmod 0755 /sys/kernel/debug/tracing
|
|
|
|
on post-fs-data
|
|
mark_post_data
|
|
|
|
mkdir /data/vendor 0771 root root
|
|
mkdir /data/vendor_ce 0771 root root
|
|
mkdir /data/vendor_de 0771 root root
|
|
mkdir /data/vendor/hardware 0771 root root
|
|
|
|
# Start tombstoned early to be able to store tombstones.
|
|
# microdroid doesn't have anr, but tombstoned requires it
|
|
mkdir /data/anr 0775 system system
|
|
mkdir /data/tombstones 0771 system system
|
|
mkdir /data/vendor/tombstones 0771 root root
|
|
|
|
start tombstoned
|
|
|
|
# For security reasons, /data/local/tmp should always be empty.
|
|
# Do not place files or directories in /data/local/tmp
|
|
mkdir /data/local 0751 root root
|
|
mkdir /data/local/tmp 0771 shell shell
|
|
|
|
on init && property:ro.boot.tombstone_transmit.enabled=1
|
|
start tombstone_transmit
|
|
|
|
service tombstone_transmit /system/bin/tombstone_transmit.microdroid -cid 2 -port 2000
|
|
user root
|
|
group system
|
|
|
|
service apexd-vm /system/bin/apexd --vm
|
|
user root
|
|
group system
|
|
oneshot
|
|
disabled
|
|
|
|
service ueventd /system/bin/ueventd
|
|
class core
|
|
critical
|
|
seclabel u:r:ueventd:s0
|
|
shutdown critical
|
|
|
|
service console /system/bin/sh
|
|
class core
|
|
console
|
|
disabled
|
|
user shell
|
|
group shell log readproc
|
|
seclabel u:r:shell:s0
|
|
setenv HOSTNAME console
|
|
|
|
service seriallogging /system/bin/logcat -b all -v threadtime -f /dev/hvc2 *:V
|
|
disabled
|
|
user logd
|
|
group root logd
|
|
|
|
on fs
|
|
write /dev/event-log-tags "# content owned by logd
|
|
"
|
|
chown logd logd /dev/event-log-tags
|
|
chmod 0644 /dev/event-log-tags
|