init.rc revision 950909c301e316783e5b4687dbc422ed845cb69a 
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_adj -16
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
270    # symlink to bugreport storage location
271    symlink /data/data/com.android.shell/files/bugreports /data/bugreports
272
273    # Separate location for storing security policy files on data
274    mkdir /data/security 0711 system system
275
276    # Reload policy from /data/security if present.
277    setprop selinux.reload_policy 1
278
279    # If there is no fs-post-data action in the init.<device>.rc file, you
280    # must uncomment this line, otherwise encrypted filesystems
281    # won't work.
282    # Set indication (checked by vold) that we have finished this action
283    #setprop vold.post_fs_data_done 1
284
285on boot
286# basic network init
287    ifup lo
288    hostname localhost
289    domainname localdomain
290
291# set RLIMIT_NICE to allow priorities from 19 to -20
292    setrlimit 13 40 40
293
294# Memory management.  Basic kernel parameters, and allow the high
295# level system server to be able to adjust the kernel OOM driver
296# parameters to match how it is managing things.
297    write /proc/sys/vm/overcommit_memory 1
298    write /proc/sys/vm/min_free_order_shift 4
299    chown root system /sys/module/lowmemorykiller/parameters/adj
300    chmod 0664 /sys/module/lowmemorykiller/parameters/adj
301    chown root system /sys/module/lowmemorykiller/parameters/minfree
302    chmod 0664 /sys/module/lowmemorykiller/parameters/minfree
303
304    # Tweak background writeout
305    write /proc/sys/vm/dirty_expire_centisecs 200
306    write /proc/sys/vm/dirty_background_ratio  5
307
308    # Permissions for System Server and daemons.
309    chown radio system /sys/android_power/state
310    chown radio system /sys/android_power/request_state
311    chown radio system /sys/android_power/acquire_full_wake_lock
312    chown radio system /sys/android_power/acquire_partial_wake_lock
313    chown radio system /sys/android_power/release_wake_lock
314    chown system system /sys/power/autosleep
315    chown system system /sys/power/state
316    chown system system /sys/power/wakeup_count
317    chown radio system /sys/power/wake_lock
318    chown radio system /sys/power/wake_unlock
319    chmod 0660 /sys/power/state
320    chmod 0660 /sys/power/wake_lock
321    chmod 0660 /sys/power/wake_unlock
322
323    chown system system /sys/devices/system/cpu/cpufreq/interactive/timer_rate
324    chmod 0660 /sys/devices/system/cpu/cpufreq/interactive/timer_rate
325    chown system system /sys/devices/system/cpu/cpufreq/interactive/timer_slack
326    chmod 0660 /sys/devices/system/cpu/cpufreq/interactive/timer_slack
327    chown system system /sys/devices/system/cpu/cpufreq/interactive/min_sample_time
328    chmod 0660 /sys/devices/system/cpu/cpufreq/interactive/min_sample_time
329    chown system system /sys/devices/system/cpu/cpufreq/interactive/hispeed_freq
330    chmod 0660 /sys/devices/system/cpu/cpufreq/interactive/hispeed_freq
331    chown system system /sys/devices/system/cpu/cpufreq/interactive/target_loads
332    chmod 0660 /sys/devices/system/cpu/cpufreq/interactive/target_loads
333    chown system system /sys/devices/system/cpu/cpufreq/interactive/go_hispeed_load
334    chmod 0660 /sys/devices/system/cpu/cpufreq/interactive/go_hispeed_load
335    chown system system /sys/devices/system/cpu/cpufreq/interactive/above_hispeed_delay
336    chmod 0660 /sys/devices/system/cpu/cpufreq/interactive/above_hispeed_delay
337    chown system system /sys/devices/system/cpu/cpufreq/interactive/boost
338    chmod 0660 /sys/devices/system/cpu/cpufreq/interactive/boost
339    chown system system /sys/devices/system/cpu/cpufreq/interactive/boostpulse
340    chown system system /sys/devices/system/cpu/cpufreq/interactive/input_boost
341    chmod 0660 /sys/devices/system/cpu/cpufreq/interactive/input_boost
342    chown system system /sys/devices/system/cpu/cpufreq/interactive/boostpulse_duration
343    chmod 0660 /sys/devices/system/cpu/cpufreq/interactive/boostpulse_duration
344    chown system system /sys/devices/system/cpu/cpufreq/interactive/io_is_busy
345    chmod 0660 /sys/devices/system/cpu/cpufreq/interactive/io_is_busy
346
347    # Assume SMP uses shared cpufreq policy for all CPUs
348    chown system system /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq
349    chmod 0660 /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq
350
351    chown system system /sys/class/timed_output/vibrator/enable
352    chown system system /sys/class/leds/keyboard-backlight/brightness
353    chown system system /sys/class/leds/lcd-backlight/brightness
354    chown system system /sys/class/leds/button-backlight/brightness
355    chown system system /sys/class/leds/jogball-backlight/brightness
356    chown system system /sys/class/leds/red/brightness
357    chown system system /sys/class/leds/green/brightness
358    chown system system /sys/class/leds/blue/brightness
359    chown system system /sys/class/leds/red/device/grpfreq
360    chown system system /sys/class/leds/red/device/grppwm
361    chown system system /sys/class/leds/red/device/blink
362    chown system system /sys/class/timed_output/vibrator/enable
363    chown system system /sys/module/sco/parameters/disable_esco
364    chown system system /sys/kernel/ipv4/tcp_wmem_min
365    chown system system /sys/kernel/ipv4/tcp_wmem_def
366    chown system system /sys/kernel/ipv4/tcp_wmem_max
367    chown system system /sys/kernel/ipv4/tcp_rmem_min
368    chown system system /sys/kernel/ipv4/tcp_rmem_def
369    chown system system /sys/kernel/ipv4/tcp_rmem_max
370    chown root radio /proc/cmdline
371
372# Define TCP buffer sizes for various networks
373#   ReadMin, ReadInitial, ReadMax, WriteMin, WriteInitial, WriteMax,
374    setprop net.tcp.buffersize.default  4096,87380,110208,4096,16384,110208
375    setprop net.tcp.buffersize.wifi     524288,1048576,2097152,262144,524288,1048576
376    setprop net.tcp.buffersize.ethernet 524288,1048576,3145728,524288,1048576,2097152
377    setprop net.tcp.buffersize.lte      524288,1048576,2097152,262144,524288,1048576
378    setprop net.tcp.buffersize.umts     4094,87380,110208,4096,16384,110208
379    setprop net.tcp.buffersize.hspa     4094,87380,262144,4096,16384,262144
380    setprop net.tcp.buffersize.hsupa    4094,87380,262144,4096,16384,262144
381    setprop net.tcp.buffersize.hsdpa    4094,87380,262144,4096,16384,262144
382    setprop net.tcp.buffersize.hspap    4094,87380,1220608,4096,16384,1220608
383    setprop net.tcp.buffersize.edge     4093,26280,35040,4096,16384,35040
384    setprop net.tcp.buffersize.gprs     4092,8760,11680,4096,8760,11680
385    setprop net.tcp.buffersize.evdo     4094,87380,262144,4096,16384,262144
386
387    class_start core
388    class_start main
389
390on nonencrypted
391    class_start late_start
392
393on charger
394    class_start charger
395
396on property:vold.decrypt=trigger_reset_main
397    class_reset main
398
399on property:vold.decrypt=trigger_load_persist_props
400    load_persist_props
401
402on property:vold.decrypt=trigger_post_fs_data
403    trigger post-fs-data
404
405on property:vold.decrypt=trigger_restart_min_framework
406    class_start main
407
408on property:vold.decrypt=trigger_restart_framework
409    class_start main
410    class_start late_start
411
412on property:vold.decrypt=trigger_shutdown_framework
413    class_reset late_start
414    class_reset main
415
416on property:sys.powerctl=*
417    powerctl ${sys.powerctl}
418
419# system server cannot write to /proc/sys files, so proxy it through init
420on property:sys.sysctl.extra_free_kbytes=*
421    write /proc/sys/vm/extra_free_kbytes ${sys.sysctl.extra_free_kbytes}
422
423## Daemon processes to be run by init.
424##
425service ueventd /sbin/ueventd
426    class core
427    critical
428    seclabel u:r:ueventd:s0
429
430service healthd /sbin/healthd
431    class core
432    critical
433    seclabel u:r:healthd:s0
434
435service healthd-charger /sbin/healthd -n
436    class charger
437    critical
438    seclabel u:r:healthd:s0
439
440service console /system/bin/sh
441    class core
442    console
443    disabled
444    user shell
445    group log
446    seclabel u:r:shell:s0
447
448on property:ro.debuggable=1
449    start console
450
451# adbd is controlled via property triggers in init.<platform>.usb.rc
452service adbd /sbin/adbd
453    class core
454    socket adbd stream 660 system system
455    disabled
456    seclabel u:r:adbd:s0
457
458# adbd on at boot in emulator
459on property:ro.kernel.qemu=1
460    start adbd
461
462service lmkd /system/bin/lmkd
463    class core
464    critical
465    socket lmkd seqpacket 0660 system system
466
467service servicemanager /system/bin/servicemanager
468    class core
469    user system
470    group system
471    critical
472    onrestart restart healthd
473    onrestart restart zygote
474    onrestart restart media
475    onrestart restart surfaceflinger
476    onrestart restart drm
477
478service vold /system/bin/vold
479    class core
480    socket vold stream 0660 root mount
481    ioprio be 2
482
483service netd /system/bin/netd
484    class main
485    socket netd stream 0660 root system
486    socket dnsproxyd stream 0660 root inet
487    socket mdns stream 0660 root system
488
489service debuggerd /system/bin/debuggerd
490    class main
491
492service ril-daemon /system/bin/rild
493    class main
494    socket rild stream 660 root radio
495    socket rild-debug stream 660 radio system
496    user root
497    group radio cache inet misc audio log
498
499service surfaceflinger /system/bin/surfaceflinger
500    class main
501    user system
502    group graphics drmrpc
503    onrestart restart zygote
504
505service zygote /system/bin/app_process -Xzygote /system/bin --zygote --start-system-server
506    class main
507    socket zygote stream 660 root system
508    onrestart write /sys/android_power/request_state wake
509    onrestart write /sys/power/state on
510    onrestart restart media
511    onrestart restart netd
512
513service drm /system/bin/drmserver
514    class main
515    user drm
516    group drm system inet drmrpc
517
518service media /system/bin/mediaserver
519    class main
520    user media
521    group audio camera inet net_bt net_bt_admin net_bw_acct drmrpc mediadrm
522    ioprio rt 4
523
524service bootanim /system/bin/bootanimation
525    class main
526    user graphics
527    group graphics
528    disabled
529    oneshot
530
531service installd /system/bin/installd
532    class main
533    socket installd stream 600 system system
534
535service flash_recovery /system/etc/install-recovery.sh
536    class main
537    oneshot
538
539service racoon /system/bin/racoon
540    class main
541    socket racoon stream 600 system system
542    # IKE uses UDP port 500. Racoon will setuid to vpn after binding the port.
543    group vpn net_admin inet
544    disabled
545    oneshot
546
547service mtpd /system/bin/mtpd
548    class main
549    socket mtpd stream 600 system system
550    user vpn
551    group vpn net_admin inet net_raw
552    disabled
553    oneshot
554
555service keystore /system/bin/keystore /data/misc/keystore
556    class main
557    user keystore
558    group keystore drmrpc
559
560service dumpstate /system/bin/dumpstate -s
561    class main
562    socket dumpstate stream 0660 shell log
563    disabled
564    oneshot
565
566service sshd /system/bin/start-ssh
567    class main
568    disabled
569
570service mdnsd /system/bin/mdnsd
571    class main
572    user mdnsr
573    group inet net_raw
574    socket mdnsd stream 0660 mdnsr inet
575    disabled
576    oneshot
577