init.rc revision 0969ec3a558723ae55f033c163b052e1dbf97669 
1# Copyright (C) 2012 The Android Open Source Project
2#
3# IMPORTANT: Do not create world writable files or directories.
4# This is a common source of Android security bugs.
5#
6
7import /init.environ.rc
8import /init.usb.rc
9import /init.${ro.hardware}.rc
10import /init.trace.rc
11
12on early-init
13    # Set init and its forked children's oom_adj.
14    write /proc/1/oom_score_adj -1000
15
16    # Apply strict SELinux checking of PROT_EXEC on mmap/mprotect calls.
17    write /sys/fs/selinux/checkreqprot 0
18
19    # Set the security context for the init process.
20    # This should occur before anything else (e.g. ueventd) is started.
21    setcon u:r:init:s0
22
23    # Set the security context of /adb_keys if present.
24    restorecon /adb_keys
25
26    start ueventd
27
28# create mountpoints
29    mkdir /mnt 0775 root system
30
31on init
32
33sysclktz 0
34
35loglevel 3
36
37# Backward compatibility
38    symlink /system/etc /etc
39    symlink /sys/kernel/debug /d
40
41# Right now vendor lives on the same filesystem as system,
42# but someday that may change.
43    symlink /system/vendor /vendor
44
45# Create cgroup mount point for cpu accounting
46    mkdir /acct
47    mount cgroup none /acct cpuacct
48    mkdir /acct/uid
49
50# Create cgroup mount point for memory
51    mount tmpfs none /sys/fs/cgroup mode=0750,uid=0,gid=1000
52    mkdir /sys/fs/cgroup/memory 0750 root system
53    mount cgroup none /sys/fs/cgroup/memory memory
54    write /sys/fs/cgroup/memory/memory.move_charge_at_immigrate 1
55    chown root system /sys/fs/cgroup/memory/tasks
56    chmod 0660 /sys/fs/cgroup/memory/tasks
57    mkdir /sys/fs/cgroup/memory/sw 0750 root system
58    write /sys/fs/cgroup/memory/sw/memory.swappiness 100
59    write /sys/fs/cgroup/memory/sw/memory.move_charge_at_immigrate 1
60    chown root system /sys/fs/cgroup/memory/sw/tasks
61    chmod 0660 /sys/fs/cgroup/memory/sw/tasks
62
63    mkdir /system
64    mkdir /data 0771 system system
65    mkdir /cache 0770 system cache
66    mkdir /config 0500 root root
67
68    # See storage config details at http://source.android.com/tech/storage/
69    mkdir /mnt/shell 0700 shell shell
70    mkdir /mnt/media_rw 0700 media_rw media_rw
71    mkdir /storage 0751 root sdcard_r
72
73    # Directory for putting things only root should see.
74    mkdir /mnt/secure 0700 root root
75
76    # Directory for staging bindmounts
77    mkdir /mnt/secure/staging 0700 root root
78
79    # Directory-target for where the secure container
80    # imagefile directory will be bind-mounted
81    mkdir /mnt/secure/asec  0700 root root
82
83    # Secure container public mount points.
84    mkdir /mnt/asec  0700 root system
85    mount tmpfs tmpfs /mnt/asec mode=0755,gid=1000
86
87    # Filesystem image public mount points.
88    mkdir /mnt/obb 0700 root system
89    mount tmpfs tmpfs /mnt/obb mode=0755,gid=1000
90
91    # memory control cgroup
92    mkdir /dev/memcg 0700 root system
93    mount cgroup none /dev/memcg memory
94
95    write /proc/sys/kernel/panic_on_oops 1
96    write /proc/sys/kernel/hung_task_timeout_secs 0
97    write /proc/cpu/alignment 4
98    write /proc/sys/kernel/sched_latency_ns 10000000
99    write /proc/sys/kernel/sched_wakeup_granularity_ns 2000000
100    write /proc/sys/kernel/sched_compat_yield 1
101    write /proc/sys/kernel/sched_child_runs_first 0
102    write /proc/sys/kernel/randomize_va_space 2
103    write /proc/sys/kernel/kptr_restrict 2
104    write /proc/sys/kernel/dmesg_restrict 1
105    write /proc/sys/vm/mmap_min_addr 32768
106    write /proc/sys/net/ipv4/ping_group_range "0 2147483647"
107    write /proc/sys/kernel/sched_rt_runtime_us 950000
108    write /proc/sys/kernel/sched_rt_period_us 1000000
109
110# Create cgroup mount points for process groups
111    mkdir /dev/cpuctl
112    mount cgroup none /dev/cpuctl cpu
113    chown system system /dev/cpuctl
114    chown system system /dev/cpuctl/tasks
115    chmod 0660 /dev/cpuctl/tasks
116    write /dev/cpuctl/cpu.shares 1024
117    write /dev/cpuctl/cpu.rt_runtime_us 950000
118    write /dev/cpuctl/cpu.rt_period_us 1000000
119
120    mkdir /dev/cpuctl/apps
121    chown system system /dev/cpuctl/apps/tasks
122    chmod 0666 /dev/cpuctl/apps/tasks
123    write /dev/cpuctl/apps/cpu.shares 1024
124    write /dev/cpuctl/apps/cpu.rt_runtime_us 800000
125    write /dev/cpuctl/apps/cpu.rt_period_us 1000000
126
127    mkdir /dev/cpuctl/apps/bg_non_interactive
128    chown system system /dev/cpuctl/apps/bg_non_interactive/tasks
129    chmod 0666 /dev/cpuctl/apps/bg_non_interactive/tasks
130    # 5.0 %
131    write /dev/cpuctl/apps/bg_non_interactive/cpu.shares 52
132    write /dev/cpuctl/apps/bg_non_interactive/cpu.rt_runtime_us 700000
133    write /dev/cpuctl/apps/bg_non_interactive/cpu.rt_period_us 1000000
134
135# qtaguid will limit access to specific data based on group memberships.
136#   net_bw_acct grants impersonation of socket owners.
137#   net_bw_stats grants access to other apps' detailed tagged-socket stats.
138    chown root net_bw_acct /proc/net/xt_qtaguid/ctrl
139    chown root net_bw_stats /proc/net/xt_qtaguid/stats
140
141# Allow everybody to read the xt_qtaguid resource tracking misc dev.
142# This is needed by any process that uses socket tagging.
143    chmod 0644 /dev/xt_qtaguid
144
145# Create location for fs_mgr to store abbreviated output from filesystem
146# checker programs.
147    mkdir /dev/fscklogs 0770 root system
148
149# pstore/ramoops previous console log
150    mount pstore pstore /sys/fs/pstore
151    chown system log /sys/fs/pstore/console-ramoops
152    chmod 0440 /sys/fs/pstore/console-ramoops
153
154on post-fs
155    # once everything is setup, no need to modify /
156    mount rootfs rootfs / ro remount
157    # mount shared so changes propagate into child namespaces
158    mount rootfs rootfs / shared rec
159
160    # We chown/chmod /cache again so because mount is run as root + defaults
161    chown system cache /cache
162    chmod 0770 /cache
163    # We restorecon /cache in case the cache partition has been reset.
164    restorecon /cache
165
166    # This may have been created by the recovery system with odd permissions
167    chown system cache /cache/recovery
168    chmod 0770 /cache/recovery
169    # This may have been created by the recovery system with the wrong context.
170    restorecon /cache/recovery
171
172    #change permissions on vmallocinfo so we can grab it from bugreports
173    chown root log /proc/vmallocinfo
174    chmod 0440 /proc/vmallocinfo
175
176    chown root log /proc/slabinfo
177    chmod 0440 /proc/slabinfo
178
179    #change permissions on kmsg & sysrq-trigger so bugreports can grab kthread stacks
180    chown root system /proc/kmsg
181    chmod 0440 /proc/kmsg
182    chown root system /proc/sysrq-trigger
183    chmod 0220 /proc/sysrq-trigger
184    chown system log /proc/last_kmsg
185    chmod 0440 /proc/last_kmsg
186
187    # create the lost+found directories, so as to enforce our permissions
188    mkdir /cache/lost+found 0770 root root
189
190on post-fs-data
191    # We chown/chmod /data again so because mount is run as root + defaults
192    chown system system /data
193    chmod 0771 /data
194    # We restorecon /data in case the userdata partition has been reset.
195    restorecon /data
196
197    # Avoid predictable entropy pool. Carry over entropy from previous boot.
198    copy /data/system/entropy.dat /dev/urandom
199
200    # Create dump dir and collect dumps.
201    # Do this before we mount cache so eventually we can use cache for
202    # storing dumps on platforms which do not have a dedicated dump partition.
203    mkdir /data/dontpanic 0750 root log
204
205    # Collect apanic data, free resources and re-arm trigger
206    copy /proc/apanic_console /data/dontpanic/apanic_console
207    chown root log /data/dontpanic/apanic_console
208    chmod 0640 /data/dontpanic/apanic_console
209
210    copy /proc/apanic_threads /data/dontpanic/apanic_threads
211    chown root log /data/dontpanic/apanic_threads
212    chmod 0640 /data/dontpanic/apanic_threads
213
214    write /proc/apanic_console 1
215
216    # create basic filesystem structure
217    mkdir /data/misc 01771 system misc
218    mkdir /data/misc/adb 02750 system shell
219    mkdir /data/misc/bluedroid 0770 bluetooth net_bt_stack
220    mkdir /data/misc/bluetooth 0770 system system
221    mkdir /data/misc/keystore 0700 keystore keystore
222    mkdir /data/misc/keychain 0771 system system
223    mkdir /data/misc/radio 0770 system radio
224    mkdir /data/misc/sms 0770 system radio
225    mkdir /data/misc/zoneinfo 0775 system system
226    restorecon_recursive /data/misc/zoneinfo
227    mkdir /data/misc/vpn 0770 system vpn
228    mkdir /data/misc/systemkeys 0700 system system
229    # give system access to wpa_supplicant.conf for backup and restore
230    mkdir /data/misc/wifi 0770 wifi wifi
231    chmod 0660 /data/misc/wifi/wpa_supplicant.conf
232    mkdir /data/local 0751 root root
233    mkdir /data/misc/media 0700 media media
234
235    # Set security context of any pre-existing /data/misc/adb/adb_keys file.
236    restorecon /data/misc/adb
237    restorecon /data/misc/adb/adb_keys
238
239    # For security reasons, /data/local/tmp should always be empty.
240    # Do not place files or directories in /data/local/tmp
241    mkdir /data/local/tmp 0771 shell shell
242    mkdir /data/data 0771 system system
243    mkdir /data/app-private 0771 system system
244    mkdir /data/app-asec 0700 root root
245    mkdir /data/app-lib 0771 system system
246    mkdir /data/app 0771 system system
247    mkdir /data/property 0700 root root
248    mkdir /data/ssh 0750 root shell
249    mkdir /data/ssh/empty 0700 root root
250
251    # create dalvik-cache, so as to enforce our permissions
252    mkdir /data/dalvik-cache 0771 system system
253
254    # create resource-cache and double-check the perms
255    mkdir /data/resource-cache 0771 system system
256    chown system system /data/resource-cache
257    chmod 0771 /data/resource-cache
258
259    # create the lost+found directories, so as to enforce our permissions
260    mkdir /data/lost+found 0770 root root
261
262    # create directory for DRM plug-ins - give drm the read/write access to
263    # the following directory.
264    mkdir /data/drm 0770 drm drm
265
266    # create directory for MediaDrm plug-ins - give drm the read/write access to
267    # the following directory.
268    mkdir /data/mediadrm 0770 mediadrm mediadrm
269    restorecon_recursive /data/mediadrm
270
271    # symlink to bugreport storage location
272    symlink /data/data/com.android.shell/files/bugreports /data/bugreports
273
274    # Separate location for storing security policy files on data
275    mkdir /data/security 0711 system system
276
277    # Reload policy from /data/security if present.
278    setprop selinux.reload_policy 1
279
280    # If there is no fs-post-data action in the init.<device>.rc file, you
281    # must uncomment this line, otherwise encrypted filesystems
282    # won't work.
283    # Set indication (checked by vold) that we have finished this action
284    #setprop vold.post_fs_data_done 1
285
286on boot
287# basic network init
288    ifup lo
289    hostname localhost
290    domainname localdomain
291
292# set RLIMIT_NICE to allow priorities from 19 to -20
293    setrlimit 13 40 40
294
295# Memory management.  Basic kernel parameters, and allow the high
296# level system server to be able to adjust the kernel OOM driver
297# parameters to match how it is managing things.
298    write /proc/sys/vm/overcommit_memory 1
299    write /proc/sys/vm/min_free_order_shift 4
300    chown root system /sys/module/lowmemorykiller/parameters/adj
301    chmod 0664 /sys/module/lowmemorykiller/parameters/adj
302    chown root system /sys/module/lowmemorykiller/parameters/minfree
303    chmod 0664 /sys/module/lowmemorykiller/parameters/minfree
304
305    # Tweak background writeout
306    write /proc/sys/vm/dirty_expire_centisecs 200
307    write /proc/sys/vm/dirty_background_ratio  5
308
309    # Permissions for System Server and daemons.
310    chown radio system /sys/android_power/state
311    chown radio system /sys/android_power/request_state
312    chown radio system /sys/android_power/acquire_full_wake_lock
313    chown radio system /sys/android_power/acquire_partial_wake_lock
314    chown radio system /sys/android_power/release_wake_lock
315    chown system system /sys/power/autosleep
316    chown system system /sys/power/state
317    chown system system /sys/power/wakeup_count
318    chown radio system /sys/power/wake_lock
319    chown radio system /sys/power/wake_unlock
320    chmod 0660 /sys/power/state
321    chmod 0660 /sys/power/wake_lock
322    chmod 0660 /sys/power/wake_unlock
323
324    chown system system /sys/devices/system/cpu/cpufreq/interactive/timer_rate
325    chmod 0660 /sys/devices/system/cpu/cpufreq/interactive/timer_rate
326    chown system system /sys/devices/system/cpu/cpufreq/interactive/timer_slack
327    chmod 0660 /sys/devices/system/cpu/cpufreq/interactive/timer_slack
328    chown system system /sys/devices/system/cpu/cpufreq/interactive/min_sample_time
329    chmod 0660 /sys/devices/system/cpu/cpufreq/interactive/min_sample_time
330    chown system system /sys/devices/system/cpu/cpufreq/interactive/hispeed_freq
331    chmod 0660 /sys/devices/system/cpu/cpufreq/interactive/hispeed_freq
332    chown system system /sys/devices/system/cpu/cpufreq/interactive/target_loads
333    chmod 0660 /sys/devices/system/cpu/cpufreq/interactive/target_loads
334    chown system system /sys/devices/system/cpu/cpufreq/interactive/go_hispeed_load
335    chmod 0660 /sys/devices/system/cpu/cpufreq/interactive/go_hispeed_load
336    chown system system /sys/devices/system/cpu/cpufreq/interactive/above_hispeed_delay
337    chmod 0660 /sys/devices/system/cpu/cpufreq/interactive/above_hispeed_delay
338    chown system system /sys/devices/system/cpu/cpufreq/interactive/boost
339    chmod 0660 /sys/devices/system/cpu/cpufreq/interactive/boost
340    chown system system /sys/devices/system/cpu/cpufreq/interactive/boostpulse
341    chown system system /sys/devices/system/cpu/cpufreq/interactive/input_boost
342    chmod 0660 /sys/devices/system/cpu/cpufreq/interactive/input_boost
343    chown system system /sys/devices/system/cpu/cpufreq/interactive/boostpulse_duration
344    chmod 0660 /sys/devices/system/cpu/cpufreq/interactive/boostpulse_duration
345    chown system system /sys/devices/system/cpu/cpufreq/interactive/io_is_busy
346    chmod 0660 /sys/devices/system/cpu/cpufreq/interactive/io_is_busy
347
348    # Assume SMP uses shared cpufreq policy for all CPUs
349    chown system system /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq
350    chmod 0660 /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq
351
352    chown system system /sys/class/timed_output/vibrator/enable
353    chown system system /sys/class/leds/keyboard-backlight/brightness
354    chown system system /sys/class/leds/lcd-backlight/brightness
355    chown system system /sys/class/leds/button-backlight/brightness
356    chown system system /sys/class/leds/jogball-backlight/brightness
357    chown system system /sys/class/leds/red/brightness
358    chown system system /sys/class/leds/green/brightness
359    chown system system /sys/class/leds/blue/brightness
360    chown system system /sys/class/leds/red/device/grpfreq
361    chown system system /sys/class/leds/red/device/grppwm
362    chown system system /sys/class/leds/red/device/blink
363    chown system system /sys/class/timed_output/vibrator/enable
364    chown system system /sys/module/sco/parameters/disable_esco
365    chown system system /sys/kernel/ipv4/tcp_wmem_min
366    chown system system /sys/kernel/ipv4/tcp_wmem_def
367    chown system system /sys/kernel/ipv4/tcp_wmem_max
368    chown system system /sys/kernel/ipv4/tcp_rmem_min
369    chown system system /sys/kernel/ipv4/tcp_rmem_def
370    chown system system /sys/kernel/ipv4/tcp_rmem_max
371    chown root radio /proc/cmdline
372
373# Define TCP buffer sizes for various networks
374#   ReadMin, ReadInitial, ReadMax, WriteMin, WriteInitial, WriteMax,
375    setprop net.tcp.buffersize.default  4096,87380,110208,4096,16384,110208
376    setprop net.tcp.buffersize.wifi     524288,1048576,2097152,262144,524288,1048576
377    setprop net.tcp.buffersize.ethernet 524288,1048576,3145728,524288,1048576,2097152
378    setprop net.tcp.buffersize.lte      524288,1048576,2097152,262144,524288,1048576
379    setprop net.tcp.buffersize.umts     4094,87380,110208,4096,16384,110208
380    setprop net.tcp.buffersize.hspa     4094,87380,262144,4096,16384,262144
381    setprop net.tcp.buffersize.hsupa    4094,87380,262144,4096,16384,262144
382    setprop net.tcp.buffersize.hsdpa    4094,87380,262144,4096,16384,262144
383    setprop net.tcp.buffersize.hspap    4094,87380,1220608,4096,16384,1220608
384    setprop net.tcp.buffersize.edge     4093,26280,35040,4096,16384,35040
385    setprop net.tcp.buffersize.gprs     4092,8760,11680,4096,8760,11680
386    setprop net.tcp.buffersize.evdo     4094,87380,262144,4096,16384,262144
387
388    class_start core
389    class_start main
390
391on nonencrypted
392    class_start late_start
393
394on charger
395    class_start charger
396
397on property:vold.decrypt=trigger_reset_main
398    class_reset main
399
400on property:vold.decrypt=trigger_load_persist_props
401    load_persist_props
402
403on property:vold.decrypt=trigger_post_fs_data
404    trigger post-fs-data
405
406on property:vold.decrypt=trigger_restart_min_framework
407    class_start main
408
409on property:vold.decrypt=trigger_restart_framework
410    class_start main
411    class_start late_start
412
413on property:vold.decrypt=trigger_shutdown_framework
414    class_reset late_start
415    class_reset main
416
417on property:sys.powerctl=*
418    powerctl ${sys.powerctl}
419
420# system server cannot write to /proc/sys files, so proxy it through init
421on property:sys.sysctl.extra_free_kbytes=*
422    write /proc/sys/vm/extra_free_kbytes ${sys.sysctl.extra_free_kbytes}
423
424## Daemon processes to be run by init.
425##
426service ueventd /sbin/ueventd
427    class core
428    critical
429    seclabel u:r:ueventd:s0
430
431service healthd /sbin/healthd
432    class core
433    critical
434    seclabel u:r:healthd:s0
435
436service console /system/bin/sh
437    class core
438    console
439    disabled
440    user shell
441    group log
442    seclabel u:r:shell:s0
443
444on property:ro.debuggable=1
445    start console
446
447# adbd is controlled via property triggers in init.<platform>.usb.rc
448service adbd /sbin/adbd
449    class core
450    socket adbd stream 660 system system
451    disabled
452    seclabel u:r:adbd:s0
453
454# adbd on at boot in emulator
455on property:ro.kernel.qemu=1
456    start adbd
457
458service lmkd /system/bin/lmkd
459    class core
460    critical
461    socket lmkd seqpacket 0660 system system
462
463service servicemanager /system/bin/servicemanager
464    class core
465    user system
466    group system
467    critical
468    onrestart restart healthd
469    onrestart restart zygote
470    onrestart restart media
471    onrestart restart surfaceflinger
472    onrestart restart inputflinger
473    onrestart restart drm
474
475service vold /system/bin/vold
476    class core
477    socket vold stream 0660 root mount
478    ioprio be 2
479
480service netd /system/bin/netd
481    class main
482    socket netd stream 0660 root system
483    socket dnsproxyd stream 0660 root inet
484    socket mdns stream 0660 root system
485
486service debuggerd /system/bin/debuggerd
487    class main
488
489service ril-daemon /system/bin/rild
490    class main
491    socket rild stream 660 root radio
492    socket rild-debug stream 660 radio system
493    user root
494    group radio cache inet misc audio log
495
496service surfaceflinger /system/bin/surfaceflinger
497    class main
498    user system
499    group graphics drmrpc
500    onrestart restart zygote
501
502service inputflinger /system/bin/inputflinger
503    class main
504    user system
505    group input
506    onrestart restart zygote
507
508service zygote /system/bin/app_process -Xzygote /system/bin --zygote --start-system-server
509    class main
510    socket zygote stream 660 root system
511    onrestart write /sys/android_power/request_state wake
512    onrestart write /sys/power/state on
513    onrestart restart media
514    onrestart restart netd
515
516service drm /system/bin/drmserver
517    class main
518    user drm
519    group drm system inet drmrpc
520
521service media /system/bin/mediaserver
522    class main
523    user media
524    group audio camera inet net_bt net_bt_admin net_bw_acct drmrpc mediadrm
525    ioprio rt 4
526
527service bootanim /system/bin/bootanimation
528    class main
529    user graphics
530    group graphics
531    disabled
532    oneshot
533
534service installd /system/bin/installd
535    class main
536    socket installd stream 600 system system
537
538service flash_recovery /system/etc/install-recovery.sh
539    class main
540    oneshot
541
542service racoon /system/bin/racoon
543    class main
544    socket racoon stream 600 system system
545    # IKE uses UDP port 500. Racoon will setuid to vpn after binding the port.
546    group vpn net_admin inet
547    disabled
548    oneshot
549
550service mtpd /system/bin/mtpd
551    class main
552    socket mtpd stream 600 system system
553    user vpn
554    group vpn net_admin inet net_raw
555    disabled
556    oneshot
557
558service keystore /system/bin/keystore /data/misc/keystore
559    class main
560    user keystore
561    group keystore drmrpc
562
563service dumpstate /system/bin/dumpstate -s
564    class main
565    socket dumpstate stream 0660 shell log
566    disabled
567    oneshot
568
569service sshd /system/bin/start-ssh
570    class main
571    disabled
572
573service mdnsd /system/bin/mdnsd
574    class main
575    user mdnsr
576    group inet net_raw
577    socket mdnsd stream 0660 mdnsr inet
578    disabled
579    oneshot
580