init.rc revision b0d5184774ae46726113ac3ac59dc89507b7ff02
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.${ro.hardware}.rc 10import /init.${ro.zygote}.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 # Set the security context of /adb_keys if present. 17 restorecon /adb_keys 18 19 # Shouldn't be necessary, but sdcard won't start without it. http://b/22568628. 20 mkdir /mnt 0775 root system 21 22 start ueventd 23 24on init 25 sysclktz 0 26 27 # Backward compatibility. 28 symlink /system/etc /etc 29 symlink /sys/kernel/debug /d 30 31 # Link /vendor to /system/vendor for devices without a vendor partition. 32 symlink /system/vendor /vendor 33 34 # Mount cgroup mount point for cpu accounting 35 mount cgroup none /acct cpuacct 36 mkdir /acct/uid 37 38 # Create cgroup mount point for memory 39 mount tmpfs none /sys/fs/cgroup mode=0750,uid=0,gid=1000 40 mkdir /sys/fs/cgroup/memory 0750 root system 41 mount cgroup none /sys/fs/cgroup/memory memory 42 write /sys/fs/cgroup/memory/memory.move_charge_at_immigrate 1 43 chown root system /sys/fs/cgroup/memory/tasks 44 chmod 0660 /sys/fs/cgroup/memory/tasks 45 mkdir /sys/fs/cgroup/memory/sw 0750 root system 46 write /sys/fs/cgroup/memory/sw/memory.swappiness 100 47 write /sys/fs/cgroup/memory/sw/memory.move_charge_at_immigrate 1 48 chown root system /sys/fs/cgroup/memory/sw/tasks 49 chmod 0660 /sys/fs/cgroup/memory/sw/tasks 50 51 # See storage config details at http://source.android.com/tech/storage/ 52 mkdir /mnt/shell 0700 shell shell 53 mkdir /mnt/media_rw 0700 media_rw media_rw 54 mkdir /storage 0751 root sdcard_r 55 56 # Directory for putting things only root should see. 57 mkdir /mnt/secure 0700 root root 58 59 # Directory for staging bindmounts 60 mkdir /mnt/secure/staging 0700 root root 61 62 # Directory-target for where the secure container 63 # imagefile directory will be bind-mounted 64 mkdir /mnt/secure/asec 0700 root root 65 66 # Secure container public mount points. 67 mkdir /mnt/asec 0700 root system 68 mount tmpfs tmpfs /mnt/asec mode=0755,gid=1000 69 70 # Filesystem image public mount points. 71 mkdir /mnt/obb 0700 root system 72 mount tmpfs tmpfs /mnt/obb mode=0755,gid=1000 73 74 # memory control cgroup 75 mkdir /dev/memcg 0700 root system 76 mount cgroup none /dev/memcg memory 77 78 write /proc/sys/kernel/panic_on_oops 1 79 write /proc/sys/kernel/hung_task_timeout_secs 0 80 write /proc/cpu/alignment 4 81 write /proc/sys/kernel/sched_latency_ns 10000000 82 write /proc/sys/kernel/sched_wakeup_granularity_ns 2000000 83 write /proc/sys/kernel/sched_compat_yield 1 84 write /proc/sys/kernel/sched_child_runs_first 0 85 write /proc/sys/kernel/randomize_va_space 2 86 write /proc/sys/kernel/kptr_restrict 2 87 write /proc/sys/vm/mmap_min_addr 32768 88 write /proc/sys/net/ipv4/ping_group_range "0 2147483647" 89 write /proc/sys/net/unix/max_dgram_qlen 300 90 write /proc/sys/kernel/sched_rt_runtime_us 950000 91 write /proc/sys/kernel/sched_rt_period_us 1000000 92 93 # reflect fwmark from incoming packets onto generated replies 94 write /proc/sys/net/ipv4/fwmark_reflect 1 95 write /proc/sys/net/ipv6/fwmark_reflect 1 96 97 # set fwmark on accepted sockets 98 write /proc/sys/net/ipv4/tcp_fwmark_accept 1 99 100 # Create cgroup mount points for process groups 101 mkdir /dev/cpuctl 102 mount cgroup none /dev/cpuctl cpu 103 chown system system /dev/cpuctl 104 chown system system /dev/cpuctl/tasks 105 chmod 0666 /dev/cpuctl/tasks 106 write /dev/cpuctl/cpu.shares 1024 107 write /dev/cpuctl/cpu.rt_runtime_us 800000 108 write /dev/cpuctl/cpu.rt_period_us 1000000 109 110 mkdir /dev/cpuctl/bg_non_interactive 111 chown system system /dev/cpuctl/bg_non_interactive/tasks 112 chmod 0666 /dev/cpuctl/bg_non_interactive/tasks 113 # 5.0 % 114 write /dev/cpuctl/bg_non_interactive/cpu.shares 52 115 write /dev/cpuctl/bg_non_interactive/cpu.rt_runtime_us 700000 116 write /dev/cpuctl/bg_non_interactive/cpu.rt_period_us 1000000 117 118 # qtaguid will limit access to specific data based on group memberships. 119 # net_bw_acct grants impersonation of socket owners. 120 # net_bw_stats grants access to other apps' detailed tagged-socket stats. 121 chown root net_bw_acct /proc/net/xt_qtaguid/ctrl 122 chown root net_bw_stats /proc/net/xt_qtaguid/stats 123 124 # Allow everybody to read the xt_qtaguid resource tracking misc dev. 125 # This is needed by any process that uses socket tagging. 126 chmod 0644 /dev/xt_qtaguid 127 128 # Create location for fs_mgr to store abbreviated output from filesystem 129 # checker programs. 130 mkdir /dev/fscklogs 0770 root system 131 132 # pstore/ramoops previous console log 133 mount pstore pstore /sys/fs/pstore 134 chown system log /sys/fs/pstore/console-ramoops 135 chmod 0440 /sys/fs/pstore/console-ramoops 136 chown system log /sys/fs/pstore/pmsg-ramoops-0 137 chmod 0440 /sys/fs/pstore/pmsg-ramoops-0 138 139 # enable armv8_deprecated instruction hooks 140 write /proc/sys/abi/swp 1 141 142# Healthd can trigger a full boot from charger mode by signaling this 143# property when the power button is held. 144on property:sys.boot_from_charger_mode=1 145 class_stop charger 146 trigger late-init 147 148# Load properties from /system/ + /factory after fs mount. 149on load_all_props_action 150 load_all_props 151 start logd 152 start logd-reinit 153 154# Indicate to fw loaders that the relevant mounts are up. 155on firmware_mounts_complete 156 rm /dev/.booting 157 158# Mount filesystems and start core system services. 159on late-init 160 trigger early-fs 161 trigger fs 162 trigger post-fs 163 trigger post-fs-data 164 165 # Load properties from /system/ + /factory after fs mount. Place 166 # this in another action so that the load will be scheduled after the prior 167 # issued fs triggers have completed. 168 trigger load_all_props_action 169 170 # Remove a file to wake up anything waiting for firmware. 171 trigger firmware_mounts_complete 172 173 trigger early-boot 174 trigger boot 175 176 177on post-fs 178 start logd 179 # once everything is setup, no need to modify / 180 mount rootfs rootfs / ro remount 181 # mount shared so changes propagate into child namespaces 182 mount rootfs rootfs / shared rec 183 184 # We chown/chmod /cache again so because mount is run as root + defaults 185 chown system cache /cache 186 chmod 0770 /cache 187 # We restorecon /cache in case the cache partition has been reset. 188 restorecon_recursive /cache 189 190 # Create /cache/recovery in case it's not there. It'll also fix the odd 191 # permissions if created by the recovery system. 192 mkdir /cache/recovery 0770 system cache 193 194 #change permissions on vmallocinfo so we can grab it from bugreports 195 chown root log /proc/vmallocinfo 196 chmod 0440 /proc/vmallocinfo 197 198 chown root log /proc/slabinfo 199 chmod 0440 /proc/slabinfo 200 201 #change permissions on kmsg & sysrq-trigger so bugreports can grab kthread stacks 202 chown root system /proc/kmsg 203 chmod 0440 /proc/kmsg 204 chown root system /proc/sysrq-trigger 205 chmod 0220 /proc/sysrq-trigger 206 chown system log /proc/last_kmsg 207 chmod 0440 /proc/last_kmsg 208 209 # make the selinux kernel policy world-readable 210 chmod 0444 /sys/fs/selinux/policy 211 212 # create the lost+found directories, so as to enforce our permissions 213 mkdir /cache/lost+found 0770 root root 214 215on post-fs-data 216 # We chown/chmod /data again so because mount is run as root + defaults 217 chown system system /data 218 chmod 0771 /data 219 # We restorecon /data in case the userdata partition has been reset. 220 restorecon /data 221 222 # Make sure we have the device encryption key 223 start logd 224 start vold 225 installkey /data 226 227 # Start bootcharting as soon as possible after the data partition is 228 # mounted to collect more data. 229 mkdir /data/bootchart 0755 shell shell 230 bootchart_init 231 232 # Avoid predictable entropy pool. Carry over entropy from previous boot. 233 copy /data/system/entropy.dat /dev/urandom 234 235 # create basic filesystem structure 236 mkdir /data/misc 01771 system misc 237 mkdir /data/misc/bluedroid 0770 bluetooth net_bt_stack 238 mkdir /data/misc/bluetooth 0770 system system 239 mkdir /data/misc/keystore 0700 keystore keystore 240 mkdir /data/misc/gatekeeper 0700 system system 241 mkdir /data/misc/keychain 0771 system system 242 mkdir /data/misc/net 0750 root shell 243 mkdir /data/misc/radio 0770 system radio 244 mkdir /data/misc/sms 0770 system radio 245 mkdir /data/misc/zoneinfo 0775 system system 246 mkdir /data/misc/vpn 0770 system vpn 247 mkdir /data/misc/shared_relro 0771 shared_relro shared_relro 248 mkdir /data/misc/systemkeys 0700 system system 249 mkdir /data/misc/wifi 0770 wifi wifi 250 mkdir /data/misc/wifi/sockets 0770 wifi wifi 251 mkdir /data/misc/wifi/wpa_supplicant 0770 wifi wifi 252 mkdir /data/misc/ethernet 0770 system system 253 mkdir /data/misc/dhcp 0770 dhcp dhcp 254 mkdir /data/misc/user 0771 root root 255 mkdir /data/misc/perfprofd 0775 root root 256 # give system access to wpa_supplicant.conf for backup and restore 257 chmod 0660 /data/misc/wifi/wpa_supplicant.conf 258 mkdir /data/local 0751 root root 259 mkdir /data/misc/media 0700 media media 260 mkdir /data/misc/boottrace 0771 system shell 261 262 # For security reasons, /data/local/tmp should always be empty. 263 # Do not place files or directories in /data/local/tmp 264 mkdir /data/local/tmp 0771 shell shell 265 mkdir /data/data 0771 system system 266 mkdir /data/app-private 0771 system system 267 mkdir /data/app-asec 0700 root root 268 mkdir /data/app-lib 0771 system system 269 mkdir /data/app 0771 system system 270 mkdir /data/property 0700 root root 271 mkdir /data/tombstones 0771 system system 272 273 # create dalvik-cache, so as to enforce our permissions 274 mkdir /data/dalvik-cache 0771 root root 275 mkdir /data/dalvik-cache/profiles 0711 system system 276 277 # create resource-cache and double-check the perms 278 mkdir /data/resource-cache 0771 system system 279 chown system system /data/resource-cache 280 chmod 0771 /data/resource-cache 281 282 # create the lost+found directories, so as to enforce our permissions 283 mkdir /data/lost+found 0770 root root 284 285 # create directory for DRM plug-ins - give drm the read/write access to 286 # the following directory. 287 mkdir /data/drm 0770 drm drm 288 289 # create directory for MediaDrm plug-ins - give drm the read/write access to 290 # the following directory. 291 mkdir /data/mediadrm 0770 mediadrm mediadrm 292 293 mkdir /data/anr 0775 system system 294 295 # symlink to bugreport storage location 296 symlink /data/data/com.android.shell/files/bugreports /data/bugreports 297 298 # Separate location for storing security policy files on data 299 mkdir /data/security 0711 system system 300 301 # Create all remaining /data root dirs so that they are made through init 302 # and get proper encryption policy installed 303 mkdir /data/backup 0700 system system 304 mkdir /data/media 0770 media_rw media_rw 305 mkdir /data/ss 0700 system system 306 mkdir /data/system 0775 system system 307 mkdir /data/system/heapdump 0700 system system 308 mkdir /data/user 0711 system system 309 310 # Reload policy from /data/security if present. 311 setprop selinux.reload_policy 1 312 313 # Set SELinux security contexts on upgrade or policy update. 314 restorecon_recursive /data 315 316 # Check any timezone data in /data is newer than the copy in /system, delete if not. 317 exec - system system -- /system/bin/tzdatacheck /system/usr/share/zoneinfo /data/misc/zoneinfo 318 319 # If there is no fs-post-data action in the init.<device>.rc file, you 320 # must uncomment this line, otherwise encrypted filesystems 321 # won't work. 322 # Set indication (checked by vold) that we have finished this action 323 #setprop vold.post_fs_data_done 1 324 325on boot 326 # basic network init 327 ifup lo 328 hostname localhost 329 domainname localdomain 330 331 # set RLIMIT_NICE to allow priorities from 19 to -20 332 setrlimit 13 40 40 333 334 # Memory management. Basic kernel parameters, and allow the high 335 # level system server to be able to adjust the kernel OOM driver 336 # parameters to match how it is managing things. 337 write /proc/sys/vm/overcommit_memory 1 338 write /proc/sys/vm/min_free_order_shift 4 339 chown root system /sys/module/lowmemorykiller/parameters/adj 340 chmod 0220 /sys/module/lowmemorykiller/parameters/adj 341 chown root system /sys/module/lowmemorykiller/parameters/minfree 342 chmod 0220 /sys/module/lowmemorykiller/parameters/minfree 343 344 # Tweak background writeout 345 write /proc/sys/vm/dirty_expire_centisecs 200 346 write /proc/sys/vm/dirty_background_ratio 5 347 348 # Permissions for System Server and daemons. 349 chown radio system /sys/android_power/state 350 chown radio system /sys/android_power/request_state 351 chown radio system /sys/android_power/acquire_full_wake_lock 352 chown radio system /sys/android_power/acquire_partial_wake_lock 353 chown radio system /sys/android_power/release_wake_lock 354 chown system system /sys/power/autosleep 355 chown system system /sys/power/state 356 chown system system /sys/power/wakeup_count 357 chown radio system /sys/power/wake_lock 358 chown radio system /sys/power/wake_unlock 359 chmod 0660 /sys/power/state 360 chmod 0660 /sys/power/wake_lock 361 chmod 0660 /sys/power/wake_unlock 362 363 chown system system /sys/devices/system/cpu/cpufreq/interactive/timer_rate 364 chmod 0660 /sys/devices/system/cpu/cpufreq/interactive/timer_rate 365 chown system system /sys/devices/system/cpu/cpufreq/interactive/timer_slack 366 chmod 0660 /sys/devices/system/cpu/cpufreq/interactive/timer_slack 367 chown system system /sys/devices/system/cpu/cpufreq/interactive/min_sample_time 368 chmod 0660 /sys/devices/system/cpu/cpufreq/interactive/min_sample_time 369 chown system system /sys/devices/system/cpu/cpufreq/interactive/hispeed_freq 370 chmod 0660 /sys/devices/system/cpu/cpufreq/interactive/hispeed_freq 371 chown system system /sys/devices/system/cpu/cpufreq/interactive/target_loads 372 chmod 0660 /sys/devices/system/cpu/cpufreq/interactive/target_loads 373 chown system system /sys/devices/system/cpu/cpufreq/interactive/go_hispeed_load 374 chmod 0660 /sys/devices/system/cpu/cpufreq/interactive/go_hispeed_load 375 chown system system /sys/devices/system/cpu/cpufreq/interactive/above_hispeed_delay 376 chmod 0660 /sys/devices/system/cpu/cpufreq/interactive/above_hispeed_delay 377 chown system system /sys/devices/system/cpu/cpufreq/interactive/boost 378 chmod 0660 /sys/devices/system/cpu/cpufreq/interactive/boost 379 chown system system /sys/devices/system/cpu/cpufreq/interactive/boostpulse 380 chown system system /sys/devices/system/cpu/cpufreq/interactive/input_boost 381 chmod 0660 /sys/devices/system/cpu/cpufreq/interactive/input_boost 382 chown system system /sys/devices/system/cpu/cpufreq/interactive/boostpulse_duration 383 chmod 0660 /sys/devices/system/cpu/cpufreq/interactive/boostpulse_duration 384 chown system system /sys/devices/system/cpu/cpufreq/interactive/io_is_busy 385 chmod 0660 /sys/devices/system/cpu/cpufreq/interactive/io_is_busy 386 387 # Assume SMP uses shared cpufreq policy for all CPUs 388 chown system system /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq 389 chmod 0660 /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq 390 391 chown system system /sys/class/timed_output/vibrator/enable 392 chown system system /sys/class/leds/keyboard-backlight/brightness 393 chown system system /sys/class/leds/lcd-backlight/brightness 394 chown system system /sys/class/leds/button-backlight/brightness 395 chown system system /sys/class/leds/jogball-backlight/brightness 396 chown system system /sys/class/leds/red/brightness 397 chown system system /sys/class/leds/green/brightness 398 chown system system /sys/class/leds/blue/brightness 399 chown system system /sys/class/leds/red/device/grpfreq 400 chown system system /sys/class/leds/red/device/grppwm 401 chown system system /sys/class/leds/red/device/blink 402 chown system system /sys/class/timed_output/vibrator/enable 403 chown system system /sys/module/sco/parameters/disable_esco 404 chown system system /sys/kernel/ipv4/tcp_wmem_min 405 chown system system /sys/kernel/ipv4/tcp_wmem_def 406 chown system system /sys/kernel/ipv4/tcp_wmem_max 407 chown system system /sys/kernel/ipv4/tcp_rmem_min 408 chown system system /sys/kernel/ipv4/tcp_rmem_def 409 chown system system /sys/kernel/ipv4/tcp_rmem_max 410 chown root radio /proc/cmdline 411 412 # Define default initial receive window size in segments. 413 setprop net.tcp.default_init_rwnd 60 414 415 class_start core 416 417on nonencrypted 418 class_start main 419 class_start late_start 420 421on property:vold.decrypt=trigger_default_encryption 422 start defaultcrypto 423 424on property:vold.decrypt=trigger_encryption 425 start surfaceflinger 426 start encrypt 427 428on property:sys.init_log_level=* 429 loglevel ${sys.init_log_level} 430 431on charger 432 class_start charger 433 434on property:vold.decrypt=trigger_reset_main 435 class_reset main 436 437on property:vold.decrypt=trigger_load_persist_props 438 load_persist_props 439 start logd 440 start logd-reinit 441 442on property:vold.decrypt=trigger_post_fs_data 443 trigger post-fs-data 444 445on property:vold.decrypt=trigger_restart_min_framework 446 class_start main 447 448on property:vold.decrypt=trigger_restart_framework 449 class_start main 450 class_start late_start 451 452on property:vold.decrypt=trigger_shutdown_framework 453 class_reset late_start 454 class_reset main 455 456on property:sys.powerctl=* 457 powerctl ${sys.powerctl} 458 459# system server cannot write to /proc/sys files, 460# and chown/chmod does not work for /proc/sys/ entries. 461# So proxy writes through init. 462on property:sys.sysctl.extra_free_kbytes=* 463 write /proc/sys/vm/extra_free_kbytes ${sys.sysctl.extra_free_kbytes} 464 465# "tcp_default_init_rwnd" Is too long! 466on property:sys.sysctl.tcp_def_init_rwnd=* 467 write /proc/sys/net/ipv4/tcp_default_init_rwnd ${sys.sysctl.tcp_def_init_rwnd} 468 469 470## Daemon processes to be run by init. 471## 472service ueventd /sbin/ueventd 473 class core 474 critical 475 seclabel u:r:ueventd:s0 476 477service healthd /sbin/healthd 478 class core 479 critical 480 seclabel u:r:healthd:s0 481 482service console /system/bin/sh 483 class core 484 console 485 disabled 486 user shell 487 group shell log 488 seclabel u:r:shell:s0 489 490on property:ro.debuggable=1 491 start console 492 493service flash_recovery /system/bin/install-recovery.sh 494 class main 495 oneshot 496 497service uncrypt /system/bin/uncrypt 498 class main 499 disabled 500 oneshot 501 502service pre-recovery /system/bin/uncrypt --reboot 503 class main 504 disabled 505 oneshot 506