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.${ro.hardware}.rc 10import /vendor/etc/init/hw/init.${ro.hardware}.rc 11import /init.usb.configfs.rc 12import /init.${ro.zygote}.rc 13 14on early-init 15 # Set init and its forked children's oom_adj. 16 write /proc/1/oom_score_adj -1000 17 18 # Disable sysrq from keyboard 19 write /proc/sys/kernel/sysrq 0 20 21 # Set the security context of /adb_keys if present. 22 restorecon /adb_keys 23 24 # Set the security context of /postinstall if present. 25 restorecon /postinstall 26 27 # Mount cgroup mount point for cpu accounting 28 mount cgroup none /acct nodev noexec nosuid cpuacct 29 mkdir /acct/uid 30 31 # root memory control cgroup, used by lmkd 32 mkdir /dev/memcg 0700 root system 33 mount cgroup none /dev/memcg nodev noexec nosuid memory 34 # app mem cgroups, used by activity manager, lmkd and zygote 35 mkdir /dev/memcg/apps/ 0755 system system 36 # cgroup for system_server and surfaceflinger 37 mkdir /dev/memcg/system 0550 system system 38 39 start ueventd 40 41on init 42 sysclktz 0 43 44 # Mix device-specific information into the entropy pool 45 copy /proc/cmdline /dev/urandom 46 copy /default.prop /dev/urandom 47 48 symlink /system/bin /bin 49 symlink /system/etc /etc 50 51 # Backward compatibility. 52 symlink /sys/kernel/debug /d 53 54 # Link /vendor to /system/vendor for devices without a vendor partition. 55 symlink /system/vendor /vendor 56 57 # Create energy-aware scheduler tuning nodes 58 mkdir /dev/stune 59 mount cgroup none /dev/stune nodev noexec nosuid schedtune 60 mkdir /dev/stune/foreground 61 mkdir /dev/stune/background 62 mkdir /dev/stune/top-app 63 mkdir /dev/stune/rt 64 chown system system /dev/stune 65 chown system system /dev/stune/foreground 66 chown system system /dev/stune/background 67 chown system system /dev/stune/top-app 68 chown system system /dev/stune/rt 69 chown system system /dev/stune/tasks 70 chown system system /dev/stune/foreground/tasks 71 chown system system /dev/stune/background/tasks 72 chown system system /dev/stune/top-app/tasks 73 chown system system /dev/stune/rt/tasks 74 chmod 0664 /dev/stune/tasks 75 chmod 0664 /dev/stune/foreground/tasks 76 chmod 0664 /dev/stune/background/tasks 77 chmod 0664 /dev/stune/top-app/tasks 78 chmod 0664 /dev/stune/rt/tasks 79 80 restorecon_recursive /mnt 81 82 mount configfs none /config nodev noexec nosuid 83 chmod 0770 /config/sdcardfs 84 chown system package_info /config/sdcardfs 85 86 mkdir /mnt/secure 0700 root root 87 mkdir /mnt/secure/asec 0700 root root 88 mkdir /mnt/asec 0755 root system 89 mkdir /mnt/obb 0755 root system 90 mkdir /mnt/media_rw 0750 root media_rw 91 mkdir /mnt/user 0755 root root 92 mkdir /mnt/user/0 0755 root root 93 mkdir /mnt/expand 0771 system system 94 mkdir /mnt/appfuse 0711 root root 95 96 # Storage views to support runtime permissions 97 mkdir /mnt/runtime 0700 root root 98 mkdir /mnt/runtime/default 0755 root root 99 mkdir /mnt/runtime/default/self 0755 root root 100 mkdir /mnt/runtime/read 0755 root root 101 mkdir /mnt/runtime/read/self 0755 root root 102 mkdir /mnt/runtime/write 0755 root root 103 mkdir /mnt/runtime/write/self 0755 root root 104 105 # Symlink to keep legacy apps working in multi-user world 106 symlink /storage/self/primary /sdcard 107 symlink /storage/self/primary /mnt/sdcard 108 symlink /mnt/user/0/primary /mnt/runtime/default/self/primary 109 110 write /proc/sys/kernel/panic_on_oops 1 111 write /proc/sys/kernel/hung_task_timeout_secs 0 112 write /proc/cpu/alignment 4 113 114 # scheduler tunables 115 # Disable auto-scaling of scheduler tunables with hotplug. The tunables 116 # will vary across devices in unpredictable ways if allowed to scale with 117 # cpu cores. 118 write /proc/sys/kernel/sched_tunable_scaling 0 119 write /proc/sys/kernel/sched_latency_ns 10000000 120 write /proc/sys/kernel/sched_wakeup_granularity_ns 2000000 121 write /proc/sys/kernel/sched_child_runs_first 0 122 123 write /proc/sys/kernel/randomize_va_space 2 124 write /proc/sys/vm/mmap_min_addr 32768 125 write /proc/sys/net/ipv4/ping_group_range "0 2147483647" 126 write /proc/sys/net/unix/max_dgram_qlen 600 127 write /proc/sys/kernel/sched_rt_runtime_us 950000 128 write /proc/sys/kernel/sched_rt_period_us 1000000 129 130 # Assign reasonable ceiling values for socket rcv/snd buffers. 131 # These should almost always be overridden by the target per the 132 # the corresponding technology maximums. 133 write /proc/sys/net/core/rmem_max 262144 134 write /proc/sys/net/core/wmem_max 262144 135 136 # reflect fwmark from incoming packets onto generated replies 137 write /proc/sys/net/ipv4/fwmark_reflect 1 138 write /proc/sys/net/ipv6/fwmark_reflect 1 139 140 # set fwmark on accepted sockets 141 write /proc/sys/net/ipv4/tcp_fwmark_accept 1 142 143 # disable icmp redirects 144 write /proc/sys/net/ipv4/conf/all/accept_redirects 0 145 write /proc/sys/net/ipv6/conf/all/accept_redirects 0 146 147 # /proc/net/fib_trie leaks interface IP addresses 148 chmod 0400 /proc/net/fib_trie 149 150 # Create cgroup mount points for process groups 151 mkdir /dev/cpuctl 152 mount cgroup none /dev/cpuctl nodev noexec nosuid cpu 153 chown system system /dev/cpuctl 154 chown system system /dev/cpuctl/tasks 155 chmod 0666 /dev/cpuctl/tasks 156 write /dev/cpuctl/cpu.rt_period_us 1000000 157 write /dev/cpuctl/cpu.rt_runtime_us 950000 158 159 # sets up initial cpusets for ActivityManager 160 mkdir /dev/cpuset 161 mount cpuset none /dev/cpuset nodev noexec nosuid 162 163 # this ensures that the cpusets are present and usable, but the device's 164 # init.rc must actually set the correct cpus 165 mkdir /dev/cpuset/foreground 166 copy /dev/cpuset/cpus /dev/cpuset/foreground/cpus 167 copy /dev/cpuset/mems /dev/cpuset/foreground/mems 168 mkdir /dev/cpuset/background 169 copy /dev/cpuset/cpus /dev/cpuset/background/cpus 170 copy /dev/cpuset/mems /dev/cpuset/background/mems 171 172 # system-background is for system tasks that should only run on 173 # little cores, not on bigs 174 # to be used only by init, so don't change system-bg permissions 175 mkdir /dev/cpuset/system-background 176 copy /dev/cpuset/cpus /dev/cpuset/system-background/cpus 177 copy /dev/cpuset/mems /dev/cpuset/system-background/mems 178 179 # restricted is for system tasks that are being throttled 180 # due to screen off. 181 mkdir /dev/cpuset/restricted 182 copy /dev/cpuset/cpus /dev/cpuset/restricted/cpus 183 copy /dev/cpuset/mems /dev/cpuset/restricted/mems 184 185 mkdir /dev/cpuset/top-app 186 copy /dev/cpuset/cpus /dev/cpuset/top-app/cpus 187 copy /dev/cpuset/mems /dev/cpuset/top-app/mems 188 189 # change permissions for all cpusets we'll touch at runtime 190 chown system system /dev/cpuset 191 chown system system /dev/cpuset/foreground 192 chown system system /dev/cpuset/background 193 chown system system /dev/cpuset/system-background 194 chown system system /dev/cpuset/top-app 195 chown system system /dev/cpuset/restricted 196 chown system system /dev/cpuset/tasks 197 chown system system /dev/cpuset/foreground/tasks 198 chown system system /dev/cpuset/background/tasks 199 chown system system /dev/cpuset/system-background/tasks 200 chown system system /dev/cpuset/top-app/tasks 201 chown system system /dev/cpuset/restricted/tasks 202 203 # set system-background to 0775 so SurfaceFlinger can touch it 204 chmod 0775 /dev/cpuset/system-background 205 206 chmod 0664 /dev/cpuset/foreground/tasks 207 chmod 0664 /dev/cpuset/background/tasks 208 chmod 0664 /dev/cpuset/system-background/tasks 209 chmod 0664 /dev/cpuset/top-app/tasks 210 chmod 0664 /dev/cpuset/restricted/tasks 211 chmod 0664 /dev/cpuset/tasks 212 213 214 # qtaguid will limit access to specific data based on group memberships. 215 # net_bw_acct grants impersonation of socket owners. 216 # net_bw_stats grants access to other apps' detailed tagged-socket stats. 217 chown root net_bw_acct /proc/net/xt_qtaguid/ctrl 218 chown root net_bw_stats /proc/net/xt_qtaguid/stats 219 220 # Allow everybody to read the xt_qtaguid resource tracking misc dev. 221 # This is needed by any process that uses socket tagging. 222 chmod 0644 /dev/xt_qtaguid 223 224 mkdir /dev/cg2_bpf 225 mount cgroup2 cg2_bpf /dev/cg2_bpf nodev noexec nosuid 226 chown root root /dev/cg2_bpf 227 chmod 0600 /dev/cg2_bpf 228 mount bpf bpf /sys/fs/bpf nodev noexec nosuid 229 230 # Create location for fs_mgr to store abbreviated output from filesystem 231 # checker programs. 232 mkdir /dev/fscklogs 0770 root system 233 234 # pstore/ramoops previous console log 235 mount pstore pstore /sys/fs/pstore nodev noexec nosuid 236 chown system log /sys/fs/pstore/console-ramoops 237 chmod 0440 /sys/fs/pstore/console-ramoops 238 chown system log /sys/fs/pstore/console-ramoops-0 239 chmod 0440 /sys/fs/pstore/console-ramoops-0 240 chown system log /sys/fs/pstore/pmsg-ramoops-0 241 chmod 0440 /sys/fs/pstore/pmsg-ramoops-0 242 243 # enable armv8_deprecated instruction hooks 244 write /proc/sys/abi/swp 1 245 246 # Linux's execveat() syscall may construct paths containing /dev/fd 247 # expecting it to point to /proc/self/fd 248 symlink /proc/self/fd /dev/fd 249 250 export DOWNLOAD_CACHE /data/cache 251 252 # set RLIMIT_NICE to allow priorities from 19 to -20 253 setrlimit nice 40 40 254 255 # Allow up to 32K FDs per process 256 setrlimit nofile 32768 32768 257 258 # This allows the ledtrig-transient properties to be created here so 259 # that they can be chown'd to system:system later on boot 260 write /sys/class/leds/vibrator/trigger "transient" 261 262# Healthd can trigger a full boot from charger mode by signaling this 263# property when the power button is held. 264on property:sys.boot_from_charger_mode=1 265 class_stop charger 266 trigger late-init 267 268on load_persist_props_action 269 load_persist_props 270 start logd 271 start logd-reinit 272 273# Indicate to fw loaders that the relevant mounts are up. 274on firmware_mounts_complete 275 rm /dev/.booting 276 277# Mount filesystems and start core system services. 278on late-init 279 trigger early-fs 280 281 # Mount fstab in init.{$device}.rc by mount_all command. Optional parameter 282 # '--early' can be specified to skip entries with 'latemount'. 283 # /system and /vendor must be mounted by the end of the fs stage, 284 # while /data is optional. 285 trigger fs 286 trigger post-fs 287 288 # Mount fstab in init.{$device}.rc by mount_all with '--late' parameter 289 # to only mount entries with 'latemount'. This is needed if '--early' is 290 # specified in the previous mount_all command on the fs stage. 291 # With /system mounted and properties form /system + /factory available, 292 # some services can be started. 293 trigger late-fs 294 295 # Now we can mount /data. File encryption requires keymaster to decrypt 296 # /data, which in turn can only be loaded when system properties are present. 297 trigger post-fs-data 298 299 # Now we can start zygote for devices with file based encryption 300 trigger zygote-start 301 302 # Load persist properties and override properties (if enabled) from /data. 303 trigger load_persist_props_action 304 305 # Remove a file to wake up anything waiting for firmware. 306 trigger firmware_mounts_complete 307 308 trigger early-boot 309 trigger boot 310 311on post-fs 312 # Load properties from 313 # /system/build.prop, 314 # /odm/build.prop, 315 # /vendor/build.prop and 316 # /factory/factory.prop 317 load_system_props 318 # start essential services 319 start logd 320 start servicemanager 321 start hwservicemanager 322 start vndservicemanager 323 324 # Once everything is setup, no need to modify /. 325 # The bind+ro combination avoids modifying any other mount flags. 326 mount rootfs rootfs / remount bind ro 327 # Mount shared so changes propagate into child namespaces 328 mount rootfs rootfs / shared rec 329 # Mount default storage into root namespace 330 mount none /mnt/runtime/default /storage bind rec 331 mount none none /storage slave rec 332 333 # Make sure /sys/kernel/debug (if present) is labeled properly 334 # Note that tracefs may be mounted under debug, so we need to cross filesystems 335 restorecon --recursive --cross-filesystems /sys/kernel/debug 336 337 # We chown/chmod /cache again so because mount is run as root + defaults 338 chown system cache /cache 339 chmod 0770 /cache 340 # We restorecon /cache in case the cache partition has been reset. 341 restorecon_recursive /cache 342 343 # Create /cache/recovery in case it's not there. It'll also fix the odd 344 # permissions if created by the recovery system. 345 mkdir /cache/recovery 0770 system cache 346 347 # Backup/restore mechanism uses the cache partition 348 mkdir /cache/backup_stage 0700 system system 349 mkdir /cache/backup 0700 system system 350 351 #change permissions on vmallocinfo so we can grab it from bugreports 352 chown root log /proc/vmallocinfo 353 chmod 0440 /proc/vmallocinfo 354 355 chown root log /proc/slabinfo 356 chmod 0440 /proc/slabinfo 357 358 #change permissions on kmsg & sysrq-trigger so bugreports can grab kthread stacks 359 chown root system /proc/kmsg 360 chmod 0440 /proc/kmsg 361 chown root system /proc/sysrq-trigger 362 chmod 0220 /proc/sysrq-trigger 363 chown system log /proc/last_kmsg 364 chmod 0440 /proc/last_kmsg 365 366 # make the selinux kernel policy world-readable 367 chmod 0444 /sys/fs/selinux/policy 368 369 # create the lost+found directories, so as to enforce our permissions 370 mkdir /cache/lost+found 0770 root root 371 372 restorecon_recursive /metadata 373 mkdir /metadata/vold 374 chmod 0700 /metadata/vold 375 376on late-fs 377 # Ensure that tracefs has the correct permissions. 378 # This does not work correctly if it is called in post-fs. 379 chmod 0755 /sys/kernel/debug/tracing 380 381 # HALs required before storage encryption can get unlocked (FBE/FDE) 382 class_start early_hal 383 384on post-fs-data 385 # We chown/chmod /data again so because mount is run as root + defaults 386 chown system system /data 387 chmod 0771 /data 388 # We restorecon /data in case the userdata partition has been reset. 389 restorecon /data 390 391 # Make sure we have the device encryption key. 392 start vold 393 installkey /data 394 395 # Start bootcharting as soon as possible after the data partition is 396 # mounted to collect more data. 397 mkdir /data/bootchart 0755 shell shell 398 bootchart start 399 400 # Avoid predictable entropy pool. Carry over entropy from previous boot. 401 copy /data/system/entropy.dat /dev/urandom 402 403 # create basic filesystem structure 404 mkdir /data/misc 01771 system misc 405 mkdir /data/misc/recovery 0770 system log 406 copy /data/misc/recovery/ro.build.fingerprint /data/misc/recovery/ro.build.fingerprint.1 407 chmod 0440 /data/misc/recovery/ro.build.fingerprint.1 408 chown system log /data/misc/recovery/ro.build.fingerprint.1 409 write /data/misc/recovery/ro.build.fingerprint ${ro.build.fingerprint} 410 chmod 0440 /data/misc/recovery/ro.build.fingerprint 411 chown system log /data/misc/recovery/ro.build.fingerprint 412 mkdir /data/misc/recovery/proc 0770 system log 413 copy /data/misc/recovery/proc/version /data/misc/recovery/proc/version.1 414 chmod 0440 /data/misc/recovery/proc/version.1 415 chown system log /data/misc/recovery/proc/version.1 416 copy /proc/version /data/misc/recovery/proc/version 417 chmod 0440 /data/misc/recovery/proc/version 418 chown system log /data/misc/recovery/proc/version 419 mkdir /data/misc/bluedroid 02770 bluetooth bluetooth 420 # Fix the access permissions and group ownership for 'bt_config.conf' 421 chmod 0660 /data/misc/bluedroid/bt_config.conf 422 chown bluetooth bluetooth /data/misc/bluedroid/bt_config.conf 423 mkdir /data/misc/bluetooth 0770 bluetooth bluetooth 424 mkdir /data/misc/bluetooth/logs 0770 bluetooth bluetooth 425 mkdir /data/misc/keystore 0700 keystore keystore 426 mkdir /data/misc/gatekeeper 0700 system system 427 mkdir /data/misc/keychain 0771 system system 428 mkdir /data/misc/net 0750 root shell 429 mkdir /data/misc/radio 0770 system radio 430 mkdir /data/misc/sms 0770 system radio 431 mkdir /data/misc/carrierid 0770 system radio 432 mkdir /data/misc/apns 0770 system radio 433 mkdir /data/misc/zoneinfo 0775 system system 434 mkdir /data/misc/network_watchlist 0774 system system 435 mkdir /data/misc/textclassifier 0771 system system 436 mkdir /data/misc/vpn 0770 system vpn 437 mkdir /data/misc/shared_relro 0771 shared_relro shared_relro 438 mkdir /data/misc/systemkeys 0700 system system 439 mkdir /data/misc/wifi 0770 wifi wifi 440 mkdir /data/misc/wifi/sockets 0770 wifi wifi 441 mkdir /data/misc/wifi/wpa_supplicant 0770 wifi wifi 442 mkdir /data/misc/ethernet 0770 system system 443 mkdir /data/misc/dhcp 0770 dhcp dhcp 444 mkdir /data/misc/user 0771 root root 445 mkdir /data/misc/perfprofd 0775 root root 446 # give system access to wpa_supplicant.conf for backup and restore 447 chmod 0660 /data/misc/wifi/wpa_supplicant.conf 448 mkdir /data/local 0751 root root 449 mkdir /data/misc/media 0700 media media 450 mkdir /data/misc/audioserver 0700 audioserver audioserver 451 mkdir /data/misc/cameraserver 0700 cameraserver cameraserver 452 mkdir /data/misc/vold 0700 root root 453 mkdir /data/misc/boottrace 0771 system shell 454 mkdir /data/misc/update_engine 0700 root root 455 mkdir /data/misc/update_engine_log 02750 root log 456 mkdir /data/misc/trace 0700 root root 457 # create location to store surface and window trace files 458 mkdir /data/misc/wmtrace 0700 system system 459 # profile file layout 460 mkdir /data/misc/profiles 0771 system system 461 mkdir /data/misc/profiles/cur 0771 system system 462 mkdir /data/misc/profiles/ref 0771 system system 463 mkdir /data/misc/profman 0770 system shell 464 mkdir /data/misc/gcov 0770 root root 465 466 mkdir /data/vendor 0771 root root 467 mkdir /data/vendor_ce 0771 root root 468 mkdir /data/vendor_de 0771 root root 469 mkdir /data/vendor/hardware 0771 root root 470 471 # For security reasons, /data/local/tmp should always be empty. 472 # Do not place files or directories in /data/local/tmp 473 mkdir /data/local/tmp 0771 shell shell 474 mkdir /data/local/traces 0777 shell shell 475 mkdir /data/data 0771 system system 476 mkdir /data/app-private 0771 system system 477 mkdir /data/app-ephemeral 0771 system system 478 mkdir /data/app-asec 0700 root root 479 mkdir /data/app-lib 0771 system system 480 mkdir /data/app 0771 system system 481 mkdir /data/property 0700 root root 482 mkdir /data/tombstones 0771 system system 483 mkdir /data/vendor/tombstones 0771 root root 484 mkdir /data/vendor/tombstones/wifi 0771 wifi wifi 485 486 # create dalvik-cache, so as to enforce our permissions 487 mkdir /data/dalvik-cache 0771 root root 488 # create the A/B OTA directory, so as to enforce our permissions 489 mkdir /data/ota 0771 root root 490 491 # create the OTA package directory. It will be accessed by GmsCore (cache 492 # group), update_engine and update_verifier. 493 mkdir /data/ota_package 0770 system cache 494 495 # create resource-cache and double-check the perms 496 mkdir /data/resource-cache 0771 system system 497 chown system system /data/resource-cache 498 chmod 0771 /data/resource-cache 499 500 # create the lost+found directories, so as to enforce our permissions 501 mkdir /data/lost+found 0770 root root 502 503 # create directory for DRM plug-ins - give drm the read/write access to 504 # the following directory. 505 mkdir /data/drm 0770 drm drm 506 507 # create directory for MediaDrm plug-ins - give drm the read/write access to 508 # the following directory. 509 mkdir /data/mediadrm 0770 mediadrm mediadrm 510 511 mkdir /data/anr 0775 system system 512 513 # NFC: create data/nfc for nv storage 514 mkdir /data/nfc 0770 nfc nfc 515 mkdir /data/nfc/param 0770 nfc nfc 516 517 # Create all remaining /data root dirs so that they are made through init 518 # and get proper encryption policy installed 519 mkdir /data/backup 0700 system system 520 mkdir /data/ss 0700 system system 521 522 mkdir /data/system 0775 system system 523 mkdir /data/system/heapdump 0700 system system 524 mkdir /data/system/users 0775 system system 525 526 mkdir /data/system_de 0770 system system 527 mkdir /data/system_ce 0770 system system 528 529 mkdir /data/misc_de 01771 system misc 530 mkdir /data/misc_ce 01771 system misc 531 532 mkdir /data/user 0711 system system 533 mkdir /data/user_de 0711 system system 534 symlink /data/data /data/user/0 535 536 mkdir /data/media 0770 media_rw media_rw 537 mkdir /data/media/obb 0770 media_rw media_rw 538 539 mkdir /data/cache 0770 system cache 540 mkdir /data/cache/recovery 0770 system cache 541 mkdir /data/cache/backup_stage 0700 system system 542 mkdir /data/cache/backup 0700 system system 543 544 init_user0 545 546 # Set SELinux security contexts on upgrade or policy update. 547 restorecon --recursive --skip-ce /data 548 549 # Check any timezone data in /data is newer than the copy in /system, delete if not. 550 exec - system system -- /system/bin/tzdatacheck /system/usr/share/zoneinfo /data/misc/zoneinfo 551 552 # If there is no post-fs-data action in the init.<device>.rc file, you 553 # must uncomment this line, otherwise encrypted filesystems 554 # won't work. 555 # Set indication (checked by vold) that we have finished this action 556 #setprop vold.post_fs_data_done 1 557 558# It is recommended to put unnecessary data/ initialization from post-fs-data 559# to start-zygote in device's init.rc to unblock zygote start. 560on zygote-start && property:ro.crypto.state=unencrypted 561 # A/B update verifier that marks a successful boot. 562 exec_start update_verifier_nonencrypted 563 start netd 564 start zygote 565 start zygote_secondary 566 567on zygote-start && property:ro.crypto.state=unsupported 568 # A/B update verifier that marks a successful boot. 569 exec_start update_verifier_nonencrypted 570 start netd 571 start zygote 572 start zygote_secondary 573 574on zygote-start && property:ro.crypto.state=encrypted && property:ro.crypto.type=file 575 # A/B update verifier that marks a successful boot. 576 exec_start update_verifier_nonencrypted 577 start netd 578 start zygote 579 start zygote_secondary 580 581on boot 582 # basic network init 583 ifup lo 584 hostname localhost 585 domainname localdomain 586 587 # IPsec SA default expiration length 588 write /proc/sys/net/core/xfrm_acq_expires 3600 589 590 # Memory management. Basic kernel parameters, and allow the high 591 # level system server to be able to adjust the kernel OOM driver 592 # parameters to match how it is managing things. 593 write /proc/sys/vm/overcommit_memory 1 594 write /proc/sys/vm/min_free_order_shift 4 595 chown root system /sys/module/lowmemorykiller/parameters/adj 596 chmod 0664 /sys/module/lowmemorykiller/parameters/adj 597 chown root system /sys/module/lowmemorykiller/parameters/minfree 598 chmod 0664 /sys/module/lowmemorykiller/parameters/minfree 599 600 # Tweak background writeout 601 write /proc/sys/vm/dirty_expire_centisecs 200 602 write /proc/sys/vm/dirty_background_ratio 5 603 604 # Permissions for System Server and daemons. 605 chown radio system /sys/android_power/state 606 chown radio system /sys/android_power/request_state 607 chown radio system /sys/android_power/acquire_full_wake_lock 608 chown radio system /sys/android_power/acquire_partial_wake_lock 609 chown radio system /sys/android_power/release_wake_lock 610 chown system system /sys/power/autosleep 611 chown system system /sys/power/state 612 chown system system /sys/power/wakeup_count 613 chown radio wakelock /sys/power/wake_lock 614 chown radio wakelock /sys/power/wake_unlock 615 chmod 0660 /sys/power/state 616 chmod 0660 /sys/power/wake_lock 617 chmod 0660 /sys/power/wake_unlock 618 619 chown system system /sys/devices/system/cpu/cpufreq/interactive/timer_rate 620 chmod 0660 /sys/devices/system/cpu/cpufreq/interactive/timer_rate 621 chown system system /sys/devices/system/cpu/cpufreq/interactive/timer_slack 622 chmod 0660 /sys/devices/system/cpu/cpufreq/interactive/timer_slack 623 chown system system /sys/devices/system/cpu/cpufreq/interactive/min_sample_time 624 chmod 0660 /sys/devices/system/cpu/cpufreq/interactive/min_sample_time 625 chown system system /sys/devices/system/cpu/cpufreq/interactive/hispeed_freq 626 chmod 0660 /sys/devices/system/cpu/cpufreq/interactive/hispeed_freq 627 chown system system /sys/devices/system/cpu/cpufreq/interactive/target_loads 628 chmod 0660 /sys/devices/system/cpu/cpufreq/interactive/target_loads 629 chown system system /sys/devices/system/cpu/cpufreq/interactive/go_hispeed_load 630 chmod 0660 /sys/devices/system/cpu/cpufreq/interactive/go_hispeed_load 631 chown system system /sys/devices/system/cpu/cpufreq/interactive/above_hispeed_delay 632 chmod 0660 /sys/devices/system/cpu/cpufreq/interactive/above_hispeed_delay 633 chown system system /sys/devices/system/cpu/cpufreq/interactive/boost 634 chmod 0660 /sys/devices/system/cpu/cpufreq/interactive/boost 635 chown system system /sys/devices/system/cpu/cpufreq/interactive/boostpulse 636 chown system system /sys/devices/system/cpu/cpufreq/interactive/input_boost 637 chmod 0660 /sys/devices/system/cpu/cpufreq/interactive/input_boost 638 chown system system /sys/devices/system/cpu/cpufreq/interactive/boostpulse_duration 639 chmod 0660 /sys/devices/system/cpu/cpufreq/interactive/boostpulse_duration 640 chown system system /sys/devices/system/cpu/cpufreq/interactive/io_is_busy 641 chmod 0660 /sys/devices/system/cpu/cpufreq/interactive/io_is_busy 642 643 # Assume SMP uses shared cpufreq policy for all CPUs 644 chown system system /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq 645 chmod 0660 /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq 646 647 chown system system /sys/class/leds/vibrator/trigger 648 chown system system /sys/class/leds/vibrator/activate 649 chown system system /sys/class/leds/vibrator/brightness 650 chown system system /sys/class/leds/vibrator/duration 651 chown system system /sys/class/leds/vibrator/state 652 chown system system /sys/class/timed_output/vibrator/enable 653 chown system system /sys/class/leds/keyboard-backlight/brightness 654 chown system system /sys/class/leds/lcd-backlight/brightness 655 chown system system /sys/class/leds/button-backlight/brightness 656 chown system system /sys/class/leds/jogball-backlight/brightness 657 chown system system /sys/class/leds/red/brightness 658 chown system system /sys/class/leds/green/brightness 659 chown system system /sys/class/leds/blue/brightness 660 chown system system /sys/class/leds/red/device/grpfreq 661 chown system system /sys/class/leds/red/device/grppwm 662 chown system system /sys/class/leds/red/device/blink 663 chown system system /sys/module/sco/parameters/disable_esco 664 chown system system /sys/kernel/ipv4/tcp_wmem_min 665 chown system system /sys/kernel/ipv4/tcp_wmem_def 666 chown system system /sys/kernel/ipv4/tcp_wmem_max 667 chown system system /sys/kernel/ipv4/tcp_rmem_min 668 chown system system /sys/kernel/ipv4/tcp_rmem_def 669 chown system system /sys/kernel/ipv4/tcp_rmem_max 670 chown root radio /proc/cmdline 671 672 # Define default initial receive window size in segments. 673 setprop net.tcp.default_init_rwnd 60 674 675 # Start standard binderized HAL daemons 676 class_start hal 677 678 class_start core 679 680on nonencrypted 681 class_start main 682 class_start late_start 683 684on property:sys.init_log_level=* 685 loglevel ${sys.init_log_level} 686 687on charger 688 class_start charger 689 690on property:vold.decrypt=trigger_reset_main 691 class_reset main 692 693on property:vold.decrypt=trigger_load_persist_props 694 load_persist_props 695 start logd 696 start logd-reinit 697 698on property:vold.decrypt=trigger_post_fs_data 699 trigger post-fs-data 700 trigger zygote-start 701 702on property:vold.decrypt=trigger_restart_min_framework 703 # A/B update verifier that marks a successful boot. 704 exec_start update_verifier 705 class_start main 706 707on property:vold.decrypt=trigger_restart_framework 708 stop surfaceflinger 709 start surfaceflinger 710 # A/B update verifier that marks a successful boot. 711 exec_start update_verifier 712 class_start main 713 class_start late_start 714 715on property:vold.decrypt=trigger_shutdown_framework 716 class_reset late_start 717 class_reset main 718 719on property:sys.boot_completed=1 720 bootchart stop 721 722# system server cannot write to /proc/sys files, 723# and chown/chmod does not work for /proc/sys/ entries. 724# So proxy writes through init. 725on property:sys.sysctl.extra_free_kbytes=* 726 write /proc/sys/vm/extra_free_kbytes ${sys.sysctl.extra_free_kbytes} 727 728# "tcp_default_init_rwnd" Is too long! 729on property:sys.sysctl.tcp_def_init_rwnd=* 730 write /proc/sys/net/ipv4/tcp_default_init_rwnd ${sys.sysctl.tcp_def_init_rwnd} 731 732on property:security.perf_harden=0 733 write /proc/sys/kernel/perf_event_paranoid 1 734 735on property:security.perf_harden=1 736 write /proc/sys/kernel/perf_event_paranoid 3 737 738# on shutdown 739# In device's init.rc, this trigger can be used to do device-specific actions 740# before shutdown. e.g disable watchdog and mask error handling 741 742## Daemon processes to be run by init. 743## 744service ueventd /sbin/ueventd 745 class core 746 critical 747 seclabel u:r:ueventd:s0 748 shutdown critical 749 750service console /system/bin/sh 751 class core 752 console 753 disabled 754 user shell 755 group shell log readproc 756 seclabel u:r:shell:s0 757 setenv HOSTNAME console 758 759on property:ro.debuggable=1 760 # Give writes to anyone for the trace folder on debug builds. 761 # The folder is used to store method traces. 762 chmod 0773 /data/misc/trace 763 # Give reads to anyone for the window trace folder on debug builds. 764 chmod 0775 /data/misc/wmtrace 765 start console 766 767service flash_recovery /system/bin/install-recovery.sh 768 class main 769 oneshot 770