# Copyright (C) 2012 The Android Open Source Project # # IMPORTANT: Do not create world writable files or directories. # This is a common source of Android security bugs. # import /init.environ.rc import /system/etc/init/hw/init.usb.rc import /init.${ro.hardware}.rc import /vendor/etc/init/hw/init.${ro.hardware}.rc import /system/etc/init/hw/init.usb.configfs.rc import /system/etc/init/hw/init.${ro.zygote}.rc # Cgroups are mounted right before early-init using list from /etc/cgroups.json on early-init # Allow bootchart to capture from the beginning of second-stage init. mkdir /dev/bootchart 0755 root root bootchart start # Disable sysrq from keyboard write /proc/sys/kernel/sysrq 0 # Android doesn't need kernel module autoloading, and it causes SELinux # denials. So disable it by setting modprobe to the empty string. Note: to # explicitly set a sysctl to an empty string, a trailing newline is needed. write /proc/sys/kernel/modprobe \n # Set the security context of /adb_keys if present. restorecon /adb_keys # Set the security context of /postinstall if present. restorecon /postinstall # memory.pressure_level used by lmkd chown root system /dev/memcg/memory.pressure_level chmod 0040 /dev/memcg/memory.pressure_level # app mem cgroups, used by activity manager, lmkd and zygote mkdir /dev/memcg/apps/ 0755 system system # cgroup for system_server and surfaceflinger mkdir /dev/memcg/system 0550 system system # symlink the Android specific /dev/tun to Linux expected /dev/net/tun mkdir /dev/net 0755 root root symlink ../tun /dev/net/tun # set RLIMIT_NICE to allow priorities from 19 to -20 setrlimit nice 40 40 # Allow up to 32Ki FDs per process by default, expandable to 512Ki. setrlimit nofile 32768 524288 # set RLIMIT_MEMLOCK to 64KB setrlimit memlock 65536 65536 # Set up linker config subdirectories based on mount namespaces mkdir /linkerconfig/bootstrap 0755 mkdir /linkerconfig/default 0755 # Greatly extend dm-verity's Merkle tree cache timeout. The default timeout # is much too short and is unnecessary, given that there is also a shrinker. write /sys/module/dm_bufio/parameters/max_age_seconds 86400 # Disable dm-verity hash prefetching, since it doesn't help performance # Read more in b/136247322 write /sys/module/dm_verity/parameters/prefetch_cluster 0 # Generate empty ld.config.txt for early executed processes which rely on # /system/lib libraries. write /linkerconfig/bootstrap/ld.config.txt \# write /linkerconfig/default/ld.config.txt \# chmod 644 /linkerconfig/bootstrap/ld.config.txt chmod 644 /linkerconfig/default/ld.config.txt # Mount bootstrap linker configuration as current mount none /linkerconfig/bootstrap /linkerconfig bind rec start ueventd # Mount tracefs (with GID=AID_READTRACEFS) mount tracefs tracefs /sys/kernel/tracing gid=3012 # Run the init_dev_config service to configure the device. exec_start init_dev_config # Fix permissions before apexd reads /metadata restorecon /metadata # Run apexd-bootstrap so that APEXes that provide critical libraries # become available. Note that this is executed as exec_start to ensure that # the libraries are available to the processes started after this statement. exec_start apexd-bootstrap perform_apex_config # These must already exist by the time boringssl_self_test32 / boringssl_self_test64 run. mkdir /dev/boringssl 0755 root root mkdir /dev/boringssl/selftest 0755 root root # create sys dirctory mkdir /dev/sys 0755 system system mkdir /dev/sys/fs 0755 system system mkdir /dev/sys/block 0755 system system # Create location for fs_mgr to store abbreviated output from filesystem # checker programs. mkdir /dev/fscklogs 0770 root system # Create tmpfs for use by the shell user. mount tmpfs tmpfs /tmp restorecon /tmp chown shell shell /tmp chmod 0771 /tmp on early-init && property:ro.boot.bootchart.enabled="" rmdir /dev/bootchart on init sysclktz 0 # Mix device-specific information into the entropy pool copy /proc/cmdline /dev/urandom copy /proc/bootconfig /dev/urandom symlink /proc/self/fd/0 /dev/stdin symlink /proc/self/fd/1 /dev/stdout symlink /proc/self/fd/2 /dev/stderr # Create socket dir for ot-daemon mkdir /dev/socket/ot-daemon 0770 thread_network thread_network # Create energy-aware scheduler tuning nodes mkdir /dev/stune/foreground mkdir /dev/stune/background mkdir /dev/stune/top-app mkdir /dev/stune/rt chown system system /dev/stune chown system system /dev/stune/foreground chown system system /dev/stune/background chown system system /dev/stune/top-app chown system system /dev/stune/rt chown system system /dev/stune/tasks chown system system /dev/stune/foreground/tasks chown system system /dev/stune/background/tasks chown system system /dev/stune/top-app/tasks chown system system /dev/stune/rt/tasks chown system system /dev/stune/cgroup.procs chown system system /dev/stune/foreground/cgroup.procs chown system system /dev/stune/background/cgroup.procs chown system system /dev/stune/top-app/cgroup.procs chown system system /dev/stune/rt/cgroup.procs chmod 0664 /dev/stune/tasks chmod 0664 /dev/stune/foreground/tasks chmod 0664 /dev/stune/background/tasks chmod 0664 /dev/stune/top-app/tasks chmod 0664 /dev/stune/rt/tasks chmod 0664 /dev/stune/cgroup.procs chmod 0664 /dev/stune/foreground/cgroup.procs chmod 0664 /dev/stune/background/cgroup.procs chmod 0664 /dev/stune/top-app/cgroup.procs chmod 0664 /dev/stune/rt/cgroup.procs # cpuctl hierarchy for devices using utilclamp mkdir /dev/cpuctl/foreground mkdir /dev/cpuctl/background mkdir /dev/cpuctl/top-app mkdir /dev/cpuctl/rt mkdir /dev/cpuctl/system mkdir /dev/cpuctl/system-background mkdir /dev/cpuctl/dex2oat # move foreground_window to the bottom to preserve the original order mkdir /dev/cpuctl/foreground_window chown system system /dev/cpuctl chown system system /dev/cpuctl/foreground chown system system /dev/cpuctl/foreground_window chown system system /dev/cpuctl/background chown system system /dev/cpuctl/top-app chown system system /dev/cpuctl/rt chown system system /dev/cpuctl/system chown system system /dev/cpuctl/system-background chown system system /dev/cpuctl/dex2oat chown system system /dev/cpuctl/tasks chown system system /dev/cpuctl/foreground/tasks chown system system /dev/cpuctl/foreground_window/tasks chown system system /dev/cpuctl/background/tasks chown system system /dev/cpuctl/top-app/tasks chown system system /dev/cpuctl/rt/tasks chown system system /dev/cpuctl/system/tasks chown system system /dev/cpuctl/system-background/tasks chown system system /dev/cpuctl/dex2oat/tasks chown system system /dev/cpuctl/cgroup.procs chown system system /dev/cpuctl/foreground/cgroup.procs chown system system /dev/cpuctl/foreground_window/cgroup.procs chown system system /dev/cpuctl/background/cgroup.procs chown system system /dev/cpuctl/top-app/cgroup.procs chown system system /dev/cpuctl/rt/cgroup.procs chown system system /dev/cpuctl/system/cgroup.procs chown system system /dev/cpuctl/system-background/cgroup.procs chown system system /dev/cpuctl/dex2oat/cgroup.procs chmod 0664 /dev/cpuctl/tasks chmod 0664 /dev/cpuctl/foreground/tasks chmod 0664 /dev/cpuctl/foreground_window/tasks chmod 0664 /dev/cpuctl/background/tasks chmod 0664 /dev/cpuctl/top-app/tasks chmod 0664 /dev/cpuctl/rt/tasks chmod 0664 /dev/cpuctl/system/tasks chmod 0664 /dev/cpuctl/system-background/tasks chmod 0664 /dev/cpuctl/dex2oat/tasks chmod 0664 /dev/cpuctl/cgroup.procs chmod 0664 /dev/cpuctl/foreground/cgroup.procs chmod 0664 /dev/cpuctl/foreground_window/cgroup.procs chmod 0664 /dev/cpuctl/background/cgroup.procs chmod 0664 /dev/cpuctl/top-app/cgroup.procs chmod 0664 /dev/cpuctl/rt/cgroup.procs chmod 0664 /dev/cpuctl/system/cgroup.procs chmod 0664 /dev/cpuctl/system-background/cgroup.procs chmod 0664 /dev/cpuctl/dex2oat/cgroup.procs # Create a cpu group for NNAPI HAL processes mkdir /dev/cpuctl/nnapi-hal chown system system /dev/cpuctl/nnapi-hal chown system system /dev/cpuctl/nnapi-hal/tasks chown system system /dev/cpuctl/nnapi-hal/cgroup.procs chmod 0664 /dev/cpuctl/nnapi-hal/tasks chmod 0664 /dev/cpuctl/nnapi-hal/cgroup.procs write /dev/cpuctl/nnapi-hal/cpu.uclamp.min 1 write /dev/cpuctl/nnapi-hal/cpu.uclamp.latency_sensitive 1 # Create a cpu group for camera daemon processes mkdir /dev/cpuctl/camera-daemon chown system system /dev/cpuctl/camera-daemon chown system system /dev/cpuctl/camera-daemon/tasks chown system system /dev/cpuctl/camera-daemon/cgroup.procs chmod 0664 /dev/cpuctl/camera-daemon/tasks chmod 0664 /dev/cpuctl/camera-daemon/cgroup.procs # Create an stune group for camera-specific processes mkdir /dev/stune/camera-daemon chown system system /dev/stune/camera-daemon chown system system /dev/stune/camera-daemon/tasks chown system system /dev/stune/camera-daemon/cgroup.procs chmod 0664 /dev/stune/camera-daemon/tasks chmod 0664 /dev/stune/camera-daemon/cgroup.procs # Create an stune group for NNAPI HAL processes mkdir /dev/stune/nnapi-hal chown system system /dev/stune/nnapi-hal chown system system /dev/stune/nnapi-hal/tasks chown system system /dev/stune/nnapi-hal/cgroup.procs chmod 0664 /dev/stune/nnapi-hal/tasks chmod 0664 /dev/stune/nnapi-hal/cgroup.procs write /dev/stune/nnapi-hal/schedtune.boost 1 write /dev/stune/nnapi-hal/schedtune.prefer_idle 1 # Create blkio group and apply initial settings. # This feature needs kernel to support it, and the # device's init.rc must actually set the correct values. mkdir /dev/blkio/background chown system system /dev/blkio chown system system /dev/blkio/background chown system system /dev/blkio/tasks chown system system /dev/blkio/background/tasks chown system system /dev/blkio/cgroup.procs chown system system /dev/blkio/background/cgroup.procs chmod 0664 /dev/blkio/tasks chmod 0664 /dev/blkio/background/tasks chmod 0664 /dev/blkio/cgroup.procs chmod 0664 /dev/blkio/background/cgroup.procs write /dev/blkio/blkio.weight 1000 write /dev/blkio/background/blkio.weight 200 write /dev/blkio/background/blkio.bfq.weight 10 write /dev/blkio/blkio.group_idle 0 write /dev/blkio/background/blkio.group_idle 0 write /dev/blkio/background/blkio.prio.class restrict-to-be restorecon_recursive /mnt mount configfs none /config nodev noexec nosuid chmod 0770 /config/sdcardfs chown system package_info /config/sdcardfs # Mount binderfs mkdir /dev/binderfs mount binder binder /dev/binderfs stats=global chmod 0755 /dev/binderfs # Mount fusectl mount fusectl none /sys/fs/fuse/connections symlink /dev/binderfs/binder /dev/binder symlink /dev/binderfs/hwbinder /dev/hwbinder symlink /dev/binderfs/vndbinder /dev/vndbinder chmod 0666 /dev/binderfs/hwbinder chmod 0666 /dev/binderfs/binder chmod 0666 /dev/binderfs/vndbinder mkdir /mnt/secure 0700 root root mkdir /mnt/secure/asec 0700 root root mkdir /mnt/asec 0755 root system mkdir /mnt/obb 0755 root system mkdir /mnt/media_rw 0750 root external_storage mkdir /mnt/user 0755 root root mkdir /mnt/user/0 0755 root root mkdir /mnt/user/0/self 0755 root root mkdir /mnt/user/0/emulated 0755 root root mkdir /mnt/user/0/emulated/0 0755 root root # Prepare directories for pass through processes mkdir /mnt/pass_through 0700 root root mkdir /mnt/pass_through/0 0710 root media_rw mkdir /mnt/pass_through/0/self 0710 root media_rw mkdir /mnt/pass_through/0/emulated 0710 root media_rw mkdir /mnt/pass_through/0/emulated/0 0710 root media_rw mkdir /mnt/expand 0771 system system mkdir /mnt/appfuse 0711 root root # Storage views to support runtime permissions mkdir /mnt/runtime 0700 root root mkdir /mnt/runtime/default 0755 root root mkdir /mnt/runtime/default/self 0755 root root mkdir /mnt/runtime/read 0755 root root mkdir /mnt/runtime/read/self 0755 root root mkdir /mnt/runtime/write 0755 root root mkdir /mnt/runtime/write/self 0755 root root mkdir /mnt/runtime/full 0755 root root mkdir /mnt/runtime/full/self 0755 root root # For Pre-reboot Dexopt mkdir /mnt/pre_reboot_dexopt 0755 artd artd # Symlink to keep legacy apps working in multi-user world symlink /storage/self/primary /mnt/sdcard symlink /mnt/user/0/primary /mnt/runtime/default/self/primary write /proc/sys/kernel/panic_on_oops 1 write /proc/sys/kernel/hung_task_timeout_secs 0 write /proc/cpu/alignment 4 # scheduler tunables # Disable auto-scaling of scheduler tunables with hotplug. The tunables # will vary across devices in unpredictable ways if allowed to scale with # cpu cores. write /proc/sys/kernel/sched_tunable_scaling 0 write /proc/sys/kernel/sched_latency_ns 10000000 write /proc/sys/kernel/sched_wakeup_granularity_ns 2000000 write /proc/sys/kernel/sched_child_runs_first 0 write /proc/sys/kernel/randomize_va_space 2 write /proc/sys/kernel/kptr_restrict 2 write /proc/sys/vm/mmap_min_addr 32768 write /proc/sys/net/ipv4/ping_group_range "0 2147483647" write /proc/sys/net/unix/max_dgram_qlen 2400 # Assign reasonable ceiling values for socket rcv/snd buffers. # These should almost always be overridden by the target per the # the corresponding technology maximums. write /proc/sys/net/core/rmem_max 262144 write /proc/sys/net/core/wmem_max 262144 # reflect fwmark from incoming packets onto generated replies write /proc/sys/net/ipv4/fwmark_reflect 1 write /proc/sys/net/ipv6/fwmark_reflect 1 # set fwmark on accepted sockets write /proc/sys/net/ipv4/tcp_fwmark_accept 1 # disable icmp redirects write /proc/sys/net/ipv4/conf/all/accept_redirects 0 write /proc/sys/net/ipv6/conf/all/accept_redirects 0 # /proc/net/fib_trie leaks interface IP addresses chmod 0400 /proc/net/fib_trie # sets up initial cpusets for ActivityManager # this ensures that the cpusets are present and usable, but the device's # init.rc must actually set the correct cpus mkdir /dev/cpuset/foreground copy /dev/cpuset/cpus /dev/cpuset/foreground/cpus copy /dev/cpuset/mems /dev/cpuset/foreground/mems mkdir /dev/cpuset/background copy /dev/cpuset/cpus /dev/cpuset/background/cpus copy /dev/cpuset/mems /dev/cpuset/background/mems # system-background is for system tasks that should only run on # little cores, not on bigs mkdir /dev/cpuset/system-background copy /dev/cpuset/cpus /dev/cpuset/system-background/cpus copy /dev/cpuset/mems /dev/cpuset/system-background/mems # restricted is for system tasks that are being throttled # due to screen off. mkdir /dev/cpuset/restricted copy /dev/cpuset/cpus /dev/cpuset/restricted/cpus copy /dev/cpuset/mems /dev/cpuset/restricted/mems mkdir /dev/cpuset/top-app copy /dev/cpuset/cpus /dev/cpuset/top-app/cpus copy /dev/cpuset/mems /dev/cpuset/top-app/mems # move foreground_window to the bottom to preserve the original order mkdir /dev/cpuset/foreground_window copy /dev/cpuset/cpus /dev/cpuset/foreground_window/cpus copy /dev/cpuset/mems /dev/cpuset/foreground_window/mems # create a cpuset for camera daemon processes mkdir /dev/cpuset/camera-daemon copy /dev/cpuset/cpus /dev/cpuset/camera-daemon/cpus copy /dev/cpuset/mems /dev/cpuset/camera-daemon/mems # change permissions for all cpusets we'll touch at runtime chown system system /dev/cpuset chown system system /dev/cpuset/foreground chown system system /dev/cpuset/foreground_window chown system system /dev/cpuset/background chown system system /dev/cpuset/system-background chown system system /dev/cpuset/top-app chown system system /dev/cpuset/restricted chown system system /dev/cpuset/camera-daemon chown system system /dev/cpuset/tasks chown system system /dev/cpuset/foreground/tasks chown system system /dev/cpuset/foreground_window/tasks chown system system /dev/cpuset/background/tasks chown system system /dev/cpuset/system-background/tasks chown system system /dev/cpuset/top-app/tasks chown system system /dev/cpuset/restricted/tasks chown system system /dev/cpuset/camera-daemon/tasks chown system system /dev/cpuset/cgroup.procs chown system system /dev/cpuset/foreground/cgroup.procs chown system system /dev/cpuset/foreground_window/cgroup.procs chown system system /dev/cpuset/background/cgroup.procs chown system system /dev/cpuset/system-background/cgroup.procs chown system system /dev/cpuset/top-app/cgroup.procs chown system system /dev/cpuset/restricted/cgroup.procs chown system system /dev/cpuset/camera-daemon/cgroup.procs # set system-background to 0775 so SurfaceFlinger can touch it chmod 0775 /dev/cpuset/system-background chmod 0664 /dev/cpuset/foreground/tasks chmod 0664 /dev/cpuset/foreground_window/tasks chmod 0664 /dev/cpuset/background/tasks chmod 0664 /dev/cpuset/system-background/tasks chmod 0664 /dev/cpuset/top-app/tasks chmod 0664 /dev/cpuset/restricted/tasks chmod 0664 /dev/cpuset/tasks chmod 0664 /dev/cpuset/camera-daemon/tasks chmod 0664 /dev/cpuset/foreground/cgroup.procs chmod 0664 /dev/cpuset/foreground_window/cgroup.procs chmod 0664 /dev/cpuset/background/cgroup.procs chmod 0664 /dev/cpuset/system-background/cgroup.procs chmod 0664 /dev/cpuset/top-app/cgroup.procs chmod 0664 /dev/cpuset/restricted/cgroup.procs chmod 0664 /dev/cpuset/cgroup.procs chmod 0664 /dev/cpuset/camera-daemon/cgroup.procs # make the PSI monitor accessible to others chown system system /proc/pressure/memory chmod 0666 /proc/pressure/memory mount bpf bpf /sys/fs/bpf nodev noexec nosuid # pstore/ramoops previous console log mount pstore pstore /sys/fs/pstore nodev noexec nosuid chown system log /sys/fs/pstore chmod 0550 /sys/fs/pstore chown system log /sys/fs/pstore/console-ramoops chmod 0440 /sys/fs/pstore/console-ramoops chown system log /sys/fs/pstore/console-ramoops-0 chmod 0440 /sys/fs/pstore/console-ramoops-0 chown system log /sys/fs/pstore/pmsg-ramoops-0 chmod 0440 /sys/fs/pstore/pmsg-ramoops-0 # enable armv8_deprecated instruction hooks write /proc/sys/abi/swp 1 # Linux's execveat() syscall may construct paths containing /dev/fd # expecting it to point to /proc/self/fd symlink /proc/self/fd /dev/fd export DOWNLOAD_CACHE /data/cache # This allows the ledtrig-transient properties to be created here so # that they can be chown'd to system:system later on boot write /sys/class/leds/vibrator/trigger "transient" # This is used by Bionic to select optimized routines. write /dev/cpu_variant:${ro.bionic.arch} ${ro.bionic.cpu_variant} chmod 0444 /dev/cpu_variant:${ro.bionic.arch} write /dev/cpu_variant:${ro.bionic.2nd_arch} ${ro.bionic.2nd_cpu_variant} chmod 0444 /dev/cpu_variant:${ro.bionic.2nd_arch} # Allow system processes to read / write power state. chown system system /sys/power/state chown system system /sys/power/wakeup_count chmod 0660 /sys/power/state chown radio wakelock /sys/power/wake_lock chown radio wakelock /sys/power/wake_unlock chmod 0660 /sys/power/wake_lock chmod 0660 /sys/power/wake_unlock # Start logd before any other services run to ensure we capture all of their logs. start logd # Start lmkd before any other services run so that it can register them write /proc/sys/vm/watermark_boost_factor 0 chown root system /sys/module/lowmemorykiller/parameters/adj chmod 0664 /sys/module/lowmemorykiller/parameters/adj chown root system /sys/module/lowmemorykiller/parameters/minfree chmod 0664 /sys/module/lowmemorykiller/parameters/minfree start lmkd # Start essential services. start servicemanager start hwservicemanager start vndservicemanager # Mount /mnt/vm ASAP to allow early VMs to run. mkdir /mnt/vm 0755 root root mount tmpfs tmpfs /mnt/vm nosuid nodev noexec rw restorecon /mnt/vm chown system system /mnt/vm chmod 0770 /mnt/vm mkdir /mnt/vm/early 0770 system system # Run boringssl self test for each ABI. Any failures trigger reboot to firmware. import /system/etc/init/hw/init.boringssl.${ro.zygote}.rc service boringssl_self_test32 /system/bin/boringssl_self_test32 reboot_on_failure reboot,boringssl-self-check-failed stdio_to_kmsg # Explicitly specify that boringssl_self_test32 doesn't require any capabilities capabilities user nobody service boringssl_self_test64 /system/bin/boringssl_self_test64 reboot_on_failure reboot,boringssl-self-check-failed stdio_to_kmsg # Explicitly specify that boringssl_self_test64 doesn't require any capabilities capabilities user nobody service boringssl_self_test_apex32 /apex/com.android.conscrypt/bin/boringssl_self_test32 reboot_on_failure reboot,boringssl-self-check-failed stdio_to_kmsg # Explicitly specify that boringssl_self_test_apex32 doesn't require any capabilities capabilities user nobody service boringssl_self_test_apex64 /apex/com.android.conscrypt/bin/boringssl_self_test64 reboot_on_failure reboot,boringssl-self-check-failed stdio_to_kmsg # Explicitly specify that boringssl_self_test_apex64 doesn't require any capabilities capabilities user nobody # Healthd can trigger a full boot from charger mode by signaling this # property when the power button is held. on property:sys.boot_from_charger_mode=1 class_stop charger trigger late-init # Indicate to fw loaders that the relevant mounts are up. on firmware_mounts_complete rm /dev/.booting # Mount filesystems and start core system services. on late-init trigger early-fs # Mount fstab in init.{$device}.rc by mount_all command. Optional parameter # '--early' can be specified to skip entries with 'latemount'. # /system and /vendor must be mounted by the end of the fs stage, # while /data is optional. trigger fs trigger post-fs # Mount fstab in init.{$device}.rc by mount_all with '--late' parameter # to only mount entries with 'latemount'. This is needed if '--early' is # specified in the previous mount_all command on the fs stage. # With /system mounted and properties form /system + /factory available, # some services can be started. trigger late-fs # Now we can mount /data. File encryption requires keymaster to decrypt # /data, which in turn can only be loaded when system properties are present. trigger post-fs-data # bpfloader can be started earlier once apexd.status=activated # Though, we should keep the event still being triggered, so which want to # start ASAP can be notified, still. trigger load-bpf-programs # Now we can start zygote. trigger zygote-start # Remove a file to wake up anything waiting for firmware. trigger firmware_mounts_complete trigger early-boot trigger boot on early-fs # Once metadata has been mounted, we'll need vold to deal with userdata checkpointing start vold on post-fs exec - system system -- /system/bin/vdc checkpoint markBootAttempt # Once everything is setup, no need to modify /. # The bind+remount combination allows this to work in containers. mount rootfs rootfs / remount bind ro nodev # Mount default storage into root namespace mount none /mnt/user/0 /storage bind rec mount none none /storage slave rec # Make sure /sys/kernel/debug (if present) is labeled properly # Note that tracefs may be mounted under debug, so we need to cross filesystems restorecon --recursive --cross-filesystems /sys/kernel/debug # We chown/chmod /cache again so because mount is run as root + defaults chown system cache /cache chmod 0770 /cache # We restorecon /cache in case the cache partition has been reset. restorecon_recursive /cache # Create /cache/recovery in case it's not there. It'll also fix the odd # permissions if created by the recovery system. mkdir /cache/recovery 0770 system cache # Backup/restore mechanism uses the cache partition mkdir /cache/backup_stage 0700 system system mkdir /cache/backup 0700 system system #change permissions on vmallocinfo so we can grab it from bugreports chown root log /proc/vmallocinfo chmod 0440 /proc/vmallocinfo chown root log /proc/allocinfo chmod 0440 /proc/allocinfo chown root log /proc/slabinfo chmod 0440 /proc/slabinfo chown root log /proc/pagetypeinfo chmod 0440 /proc/pagetypeinfo #change permissions on kmsg & sysrq-trigger so bugreports can grab kthread stacks chown root system /proc/kmsg chmod 0440 /proc/kmsg chown root system /proc/sysrq-trigger chmod 0220 /proc/sysrq-trigger chown system log /proc/last_kmsg chmod 0440 /proc/last_kmsg # make the selinux kernel policy world-readable chmod 0444 /sys/fs/selinux/policy # create the lost+found directories, so as to enforce our permissions mkdir /cache/lost+found 0770 root root restorecon_recursive /metadata mkdir /metadata/vold chmod 0700 /metadata/vold mkdir /metadata/password_slots 0771 root system mkdir /metadata/bootstat 0750 system log mkdir /metadata/ota 0750 root system mkdir /metadata/ota/snapshots 0750 root system mkdir /metadata/watchdog 0770 root system mkdir /metadata/tradeinmode 0770 root system mkdir /metadata/prefetch 0770 root system mkdir /metadata/apex 0700 root system mkdir /metadata/apex/sessions 0700 root system mkdir /metadata/apex/images 0700 root system mkdir /metadata/apex/config 0700 root system # On some devices we see a weird behaviour in which /metadata/apex doesn't # have a correct label. To workaround this bug, explicitly call restorecon # on /metadata/apex. For most of the boot sequences /metadata/apex will # already have a correct selinux label, meaning that this call will be a # no-op. restorecon_recursive /metadata/apex mkdir /metadata/staged-install 0770 root system on late-fs # Ensure that tracefs has the correct permissions. # This does not work correctly if it is called in post-fs. chmod 0755 /sys/kernel/tracing chmod 0755 /sys/kernel/debug/tracing # HALs required before storage encryption can get unlocked (FBE) class_start early_hal # Don't enable the bootreceiver tracing instance to save 10MB of memory on late-fs setprop bootreceiver.enable 0 on property:ro.product.cpu.abilist64=* && property:bootreceiver.enable=1 # Set up a tracing instance for system_server to monitor error_report_end events. # These are sent by kernel tools like KASAN and KFENCE when a memory corruption # is detected. This is only needed for 64-bit systems. mkdir /sys/kernel/tracing/instances/bootreceiver 0700 system system restorecon_recursive /sys/kernel/tracing/instances/bootreceiver write /sys/kernel/tracing/instances/bootreceiver/buffer_size_kb 1 write /sys/kernel/tracing/instances/bootreceiver/trace_options disable_on_free write /sys/kernel/tracing/instances/bootreceiver/events/error_report/error_report_end/enable 1 on post-fs-data # Start checkpoint before we touch data exec - system system -- /system/bin/vdc checkpoint prepareCheckpoint # We chown/chmod /data again so because mount is run as root + defaults chown system system /data chmod 0771 /data # We restorecon /data in case the userdata partition has been reset. restorecon /data # Make sure we have the device encryption key. installkey /data # Start bootcharting as soon as possible after the data partition is # mounted to collect more data. mkdir /data/bootchart 0755 shell shell encryption=Require bootchart start # Avoid predictable entropy pool. Carry over entropy from previous boot. copy /data/system/entropy.dat /dev/urandom mkdir /data/vendor 0771 root root encryption=Require mkdir /data/vendor/hardware 0771 root root # Start tombstoned early to be able to store tombstones. mkdir /data/anr 0775 system system encryption=Require mkdir /data/tombstones 0775 system system encryption=Require mkdir /data/vendor/tombstones 0771 root root mkdir /data/vendor/tombstones/wifi 0771 wifi wifi start tombstoned # Make sure that apexd is started in the default namespace enter_default_mount_ns # set up keystore directory structure first so that we can end early boot # and start apexd mkdir /data/misc 01771 system misc encryption=Require mkdir /data/misc/keystore 0700 keystore keystore # work around b/183668221 restorecon /data/misc /data/misc/keystore # Boot level 30 # odsign signing keys have MAX_BOOT_LEVEL=30 # This is currently the earliest boot level, but we start at 30 # to leave room for earlier levels. setprop keystore.boot_level 30 # Now that /data is mounted and we have created /data/misc/keystore, # we can tell keystore to stop allowing use of early-boot keys, # and access its database for the first time to support creation and # use of MAX_BOOT_LEVEL keys. exec - system system -- /system/bin/vdc keymaster earlyBootEnded # Multi-installed APEXes are selected using persist props. # Load persist properties and override properties (if enabled) from /data, # before starting apexd. # /data/property should be created before `load_persist_props` mkdir /data/property 0700 root root encryption=Require load_persist_props start logd-reinit # Some existing vendor rc files use 'on load_persist_props_action' to know # when persist props are ready. These are difficult to change due to GRF, # so continue triggering this action here even though props are already loaded # by the 'load_persist_props' call above. trigger load_persist_props_action # /data/apex is now available. Start apexd to scan and activate APEXes. # # To handle userspace reboots, make sure that apexd is started cleanly here # (set apexd.status="") and that it is restarted if it's already running. # # /data/apex uses encryption=None because direct I/O support is needed on # APEX files, but some devices don't support direct I/O on encrypted files. # Also, APEXes are public information, similar to the system image. # /data/apex/decompressed and /data/apex/ota_reserved override this setting; # they are encrypted so that files in them can be hard-linked into # /data/rollback which is encrypted. mkdir /data/apex 0755 root system encryption=None mkdir /data/apex/active 0755 root system mkdir /data/apex/backup 0700 root system mkdir /data/apex/decompressed 0755 root system encryption=Require mkdir /data/apex/images 0755 root system mkdir /data/app-staging 0751 system system encryption=DeleteIfNecessary mkdir /data/apex/ota_reserved 0700 root system encryption=Require setprop apexd.status "" restart apexd # create rest of basic filesystem structure mkdir /data/misc/recovery 0770 system log copy /data/misc/recovery/ro.build.fingerprint /data/misc/recovery/ro.build.fingerprint.1 chmod 0440 /data/misc/recovery/ro.build.fingerprint.1 chown system log /data/misc/recovery/ro.build.fingerprint.1 write /data/misc/recovery/ro.build.fingerprint ${ro.build.fingerprint} chmod 0440 /data/misc/recovery/ro.build.fingerprint chown system log /data/misc/recovery/ro.build.fingerprint mkdir /data/misc/recovery/proc 0770 system log copy /data/misc/recovery/proc/version /data/misc/recovery/proc/version.1 chmod 0440 /data/misc/recovery/proc/version.1 chown system log /data/misc/recovery/proc/version.1 copy /proc/version /data/misc/recovery/proc/version chmod 0440 /data/misc/recovery/proc/version chown system log /data/misc/recovery/proc/version mkdir /data/misc/bluedroid 02770 bluetooth bluetooth # Fix the access permissions and group ownership for 'bt_config.conf' chmod 0660 /data/misc/bluedroid/bt_config.conf chown bluetooth bluetooth /data/misc/bluedroid/bt_config.conf mkdir /data/misc/bluetooth 0770 bluetooth bluetooth mkdir /data/misc/bluetooth/logs 0770 bluetooth bluetooth mkdir /data/misc/nfc 0770 nfc nfc mkdir /data/misc/nfc/logs 0770 nfc nfc mkdir /data/misc/credstore 0700 credstore credstore mkdir /data/misc/gatekeeper 0700 system system mkdir /data/misc/keychain 0771 system system mkdir /data/misc/net 0750 root shell mkdir /data/misc/radio 0770 system radio mkdir /data/misc/sms 0770 system radio mkdir /data/misc/carrierid 0770 system radio mkdir /data/misc/apns 0770 system radio mkdir /data/misc/emergencynumberdb 0770 system radio mkdir /data/misc/network_watchlist 0774 system system mkdir /data/misc/telephonyconfig 0770 system radio mkdir /data/misc/textclassifier 0771 system system mkdir /data/misc/vpn 0770 system vpn mkdir /data/misc/shared_relro 0771 shared_relro shared_relro mkdir /data/misc/systemkeys 0700 system system mkdir /data/misc/wifi 0770 wifi wifi mkdir /data/misc/wifi/mainline_supplicant 0770 wifi wifi mkdir /data/misc/wifi/mainline_supplicant/sockets 0770 wifi wifi mkdir /data/misc/wifi/sockets 0770 wifi wifi mkdir /data/misc/wifi/wpa_supplicant 0770 wifi wifi mkdir /data/misc/ethernet 0770 system system mkdir /data/misc/dhcp 0770 dhcp dhcp mkdir /data/misc/user 0771 root root # give system access to wpa_supplicant.conf for backup and restore chmod 0660 /data/misc/wifi/wpa_supplicant.conf mkdir /data/local 0751 root root encryption=Require mkdir /data/misc/media 0700 media media mkdir /data/misc/audioserver 0700 audioserver audioserver mkdir /data/misc/cameraserver 0700 cameraserver cameraserver mkdir /data/misc/vold 0700 root root mkdir /data/misc/boottrace 0771 system shell mkdir /data/misc/update_engine 0700 root root mkdir /data/misc/update_engine_log 02750 root update_engine_log mkdir /data/misc/trace 0700 root root # create location to store surface and window trace files mkdir /data/misc/wmtrace 0700 system system # create location to store accessibility trace files mkdir /data/misc/a11ytrace 0700 system system # profile file layout mkdir /data/misc/profiles 0771 system system mkdir /data/misc/profiles/cur 0771 system system mkdir /data/misc/profiles/ref 0771 system system mkdir /data/misc/profman 0770 system shell mkdir /data/misc/gcov 0770 root root mkdir /data/misc/installd 0700 root root mkdir /data/misc/apexdata 0711 root root mkdir /data/misc/apexrollback 0700 root root mkdir /data/misc/appcompat/ 0700 system system mkdir /data/misc/uprobestats-configs/ 0777 uprobestats uprobestats mkdir /data/misc/snapshotctl_log 0755 root root # create location to store pre-reboot information mkdir /data/misc/prereboot 0700 system system # directory used for on-device refresh metrics file. mkdir /data/misc/odrefresh 0777 system system # directory used for on-device signing key blob mkdir /data/misc/odsign 0710 root system # directory used for odsign metrics mkdir /data/misc/odsign/metrics 0770 root system # directory used for connectivity blob store. mkdir /data/misc/connectivityblobdb 0770 system system # Setup SurfaceFlinger shader caching mkdir /data/misc/surfaceflinger 0700 system system setprop service.sf.cache_dir_available 1 # Directory for VirtualizationService temporary image files. # Delete any stale files owned by the old virtualizationservice uid (b/230056726). chmod 0770 /data/misc/virtualizationservice exec - virtualizationservice system -- /bin/rm -rf /data/misc/virtualizationservice mkdir /data/misc/virtualizationservice 0771 system system # /data/preloads uses encryption=None because it only contains preloaded # files that are public information, similar to the system image. mkdir /data/preloads 0775 system system encryption=None # For security reasons, /data/local/tmp should always be empty. # Do not place files or directories in /data/local/tmp mkdir /data/local/tmp 0771 shell shell mkdir /data/local/traces 0777 shell shell mkdir /data/app-private 0771 system system encryption=Require mkdir /data/app-ephemeral 0771 system system encryption=Require mkdir /data/app-asec 0700 root root encryption=Require mkdir /data/app-lib 0771 system system encryption=Require mkdir /data/app 0771 system system encryption=Require # Create directory for app metadata files mkdir /data/app-metadata 0700 system system encryption=Require # create directory for updated font files. mkdir /data/fonts/ 0771 root root encryption=Require mkdir /data/fonts/files 0771 system system mkdir /data/fonts/config 0770 system system # Create directories to push tests to for each linker namespace. # Create the subdirectories in case the first test is run as root # so it doesn't end up owned by root. # Set directories to be executable by any process so that debuggerd, # aka crash_dump, can read any executables/shared libraries. mkdir /data/local/tests 0701 shell shell mkdir /data/local/tests/product 0701 shell shell mkdir /data/local/tests/system 0701 shell shell mkdir /data/local/tests/unrestricted 0701 shell shell mkdir /data/local/tests/vendor 0701 shell shell # create dalvik-cache, so as to enforce our permissions mkdir /data/dalvik-cache 0771 root root encryption=Require # create the A/B OTA directory, so as to enforce our permissions mkdir /data/ota 0771 root root encryption=Require # create the OTA package directory. It will be accessed by GmsCore (cache # group), update_engine mkdir /data/ota_package 0770 system cache encryption=Require # create resource-cache and double-check the perms mkdir /data/resource-cache 0771 system system encryption=Require chown system system /data/resource-cache chmod 0771 /data/resource-cache # Ensure that lost+found exists and has the correct permissions. Linux # filesystems expect this directory to exist; it's where the fsck tool puts # any recovered files that weren't present in any directory. It must be # unencrypted, as fsck must be able to write to it. mkdir /data/lost+found 0770 root root encryption=None # create directory for DRM plug-ins - give drm the read/write access to # the following directory. mkdir /data/drm 0770 drm drm encryption=Require # create directory for MediaDrm plug-ins - give drm the read/write access to # the following directory. mkdir /data/mediadrm 0770 mediadrm mediadrm encryption=Require # NFC: create data/nfc for nv storage mkdir /data/nfc 0770 nfc nfc encryption=Require mkdir /data/nfc/param 0770 nfc nfc # Create all remaining /data root dirs so that they are made through init # and get proper encryption policy installed mkdir /data/backup 0700 system system encryption=Require mkdir /data/ss 0700 system system encryption=Require mkdir /data/system 0775 system system encryption=Require mkdir /data/system/aiseal 0700 system system mkdir /data/system/environ 0700 system system # b/183861600 attempt to fix selinux label before running derive_classpath service restorecon /data/system/environ mkdir /data/system/dropbox 0700 system system mkdir /data/system/heapdump 0700 system system mkdir /data/system/users 0775 system system # Mkdir and set SELinux security contexts for shutdown-checkpoints. # TODO(b/270286197): remove these after couple releases. mkdir /data/system/shutdown-checkpoints 0755 system system restorecon_recursive /data/system/shutdown-checkpoints # Create the parent directories of the user CE and DE storage directories. # These parent directories must use encryption=None, since each of their # subdirectories uses a different encryption policy (a per-user one), and # encryption policies apply recursively. These directories should never # contain any subdirectories other than the per-user ones. /data/media/obb # is an exception that exists for legacy reasons. # # Don't use any write mode bits (0222) for any of these directories, since # the only process that should write to them directly is vold (since it # needs to set up file-based encryption on the subdirectories), which runs # as root with CAP_DAC_OVERRIDE. This is also fully enforced via the # SELinux policy. But we also set the DAC file modes accordingly, to try to # minimize differences in behavior if SELinux is set to permissive mode. mkdir /data/media 0550 media_rw media_rw encryption=None mkdir /data/misc_ce 0551 system misc encryption=None mkdir /data/misc_de 0551 system misc encryption=None mkdir /data/system_ce 0550 system system encryption=None mkdir /data/system_de 0550 system system encryption=None mkdir /data/user 0511 system system encryption=None mkdir /data/user_de 0511 system system encryption=None mkdir /data/vendor_ce 0551 root root encryption=None mkdir /data/vendor_de 0551 root root encryption=None # Similar to the top-level CE and DE directories, /data/storage_area must # itself be unencrypted, since it contains encrypted directories. mkdir /data/storage_area 0551 root root encryption=None # Set the casefold flag on /data/media. For upgrades, a restorecon can be # needed first to relabel the directory from media_rw_data_file. restorecon /data/media start casefolding_remover wait_for_prop ro.casefolding.adjusted 1 # A tmpfs directory, which will contain all apps and sdk sandbox CE and DE # data directory that bind mount from the original source. mount tmpfs tmpfs /data_mirror nodev noexec nosuid mode=0700,uid=0,gid=1000 restorecon /data_mirror mkdir /data_mirror/data_ce 0700 root root mkdir /data_mirror/data_de 0700 root root mkdir /data_mirror/misc_ce 0700 root root mkdir /data_mirror/misc_de 0700 root root mkdir /data_mirror/storage_area 0700 root root # Create CE and DE data directory for default volume # Not needed for storage_area directory, since this is # not supported for non-default volumes and the path # does not include the volume ID mkdir /data_mirror/data_ce/null 0700 root root mkdir /data_mirror/data_de/null 0700 root root mkdir /data_mirror/misc_ce/null 0700 root root mkdir /data_mirror/misc_de/null 0700 root root # Bind mount CE and DE data directory to mirror's default volume directory. # Note that because the /data mount has the "shared" propagation type, the # later bind mount of /data/data onto /data/user/0 will automatically # propagate to /data_mirror/data_ce/null/0 as well. mount none /data/user /data_mirror/data_ce/null bind rec mount none /data/user_de /data_mirror/data_de/null bind rec mount none /data/misc_ce /data_mirror/misc_ce/null bind rec mount none /data/misc_de /data_mirror/misc_de/null bind rec # Also bind mount for the storage area directory (minus the volume ID) mount none /data/storage_area /data_mirror/storage_area bind rec # Create mirror directory for jit profiles mkdir /data_mirror/cur_profiles 0700 root root mount none /data/misc/profiles/cur /data_mirror/cur_profiles bind rec mkdir /data_mirror/ref_profiles 0700 root root mount none /data/misc/profiles/ref /data_mirror/ref_profiles bind rec mkdir /data/cache 0770 system cache encryption=Require mkdir /data/cache/recovery 0770 system cache mkdir /data/cache/backup_stage 0700 system system mkdir /data/cache/backup 0700 system system # Delete these if need be, per b/139193659 mkdir /data/rollback 0700 system system encryption=DeleteIfNecessary mkdir /data/rollback-observer 0700 system system encryption=DeleteIfNecessary mkdir /data/rollback-history 0700 system system encryption=DeleteIfNecessary # Create root dir for Incremental Service mkdir /data/incremental 0771 system system encryption=Require # Create directories for statsd mkdir /data/misc/stats-active-metric/ 0770 statsd system mkdir /data/misc/stats-atoms/ 0775 statsd system mkdir /data/misc/stats-data/ 0770 statsd system mkdir /data/misc/stats-data/restricted-data 0770 statsd system mkdir /data/misc/stats-metadata/ 0770 statsd system mkdir /data/misc/stats-service/ 0770 statsd system mkdir /data/misc/train-info/ 0770 statsd system # System server uses securityfs to manage the safesetid policy (b/414893665). mount securityfs securityfs /sys/kernel/security rw chown system /sys/kernel/security/safesetid/uid_allowlist_policy wait_for_prop apexd.status activated # Wait for KeyMints to receive APEX module info before starting code from updateable APEXes. # This is to prevent APEX modules from interfering in module measurement. wait_for_prop keystore.module_hash.sent true perform_apex_config start system_aconfigd_socket_service exec_start mainline_aconfigd_init start mainline_aconfigd_socket_service # It is important that we start bpfloader after: # - /sys/fs/bpf is already mounted, # - apex (incl. rollback) is activated (so that we can load bpf # programs shipped as part of apex mainline modules) # - logd is ready for us to log stuff # - aconfig flags are initialized (since bpf programs can be # conditionally loaded based on feature flags) # # At the same time we want to be as early as possible to reduce races and thus # failures (before memory is fragmented, and cpu is busy running tons of other # stuff) and we absolutely want to be before netd and the system boot slot is # considered to have booted successfully. # Temporarily relax access to kallsyms so that bpfloader can resolve kernel symbols # at load time. # # NOTE: Still requires CAP_SYSLOG and sepolicy allow rules to read /proc/kallsyms write /proc/sys/kernel/kptr_restrict 1 # Should be before netd, but after apex is activated, properties and logging is available. exec_start bpfloader # Restore kallsyms protection after bpf programs have been loaded. write /proc/sys/kernel/kptr_restrict 2 # Should be after bpfloader start netd # Create directories for boot animation. mkdir /data/misc/bootanim 0755 system system exec_start derive_sdk init_user0 # Set SELinux security contexts on upgrade or policy update. restorecon --recursive --skip-ce /data # Define and export *CLASSPATH variables # Must start before 'odsign', as odsign depends on *CLASSPATH variables exec_start derive_classpath load_exports /data/system/environ/classpath # Start ART's oneshot boot service to propagate boot experiment flags to # dalvik.vm.*. This needs to be done before odsign since odrefresh uses and # validates those properties against the signed cache-info.xml. exec_start art_boot # Start the on-device signing daemon, and wait for it to finish, to ensure # ART artifacts are generated if needed. # Must start after 'derive_classpath' to have *CLASSPATH variables set. start odsign # Wait for odsign to be done with the key. wait_for_prop odsign.key.done 1 # Bump the boot level to 1000000000; this prevents further on-device signing. # This is a special value that shuts down the thread which listens for # further updates. setprop keystore.boot_level 1000000000 # Allow apexd to snapshot and restore device encrypted apex data in the case # of a rollback. This should be done immediately after DE_user data keys # are loaded. APEXes should not access this data until this has been # completed and apexd.status becomes "ready". exec_start apexd-snapshotde # Set fscklog permission chown root system /dev/fscklogs/log chmod 0770 /dev/fscklogs/log # Enable FUSE by default setprop persist.sys.fuse true # Update dm-verity state and set partition.*.verified properties. verity_update_state on early-init && property:persist.sys.evox.spoof.migrated= setprop persist.sys.evox.spoof.migrated 0 on post-fs-data && property:persist.sys.evox.spoof.migrated=0 exec - root root -- /system/bin/rm -rf /data/adb/tricky_store /data/adb/playintegrityfix /data/adb/gameprops /data/adb/.custom_rom_hide_allowlist setprop persist.sys.evox.spoof.migrated 1 on property:vold.checkpoint_committed=1 trigger post-fs-data-checkpointed # It is recommended to put unnecessary data/ initialization from post-fs-data # to start-zygote in device's init.rc to unblock zygote start. on zygote-start wait_for_prop odsign.verification.done 1 start statsd start zygote start zygote_secondary on boot && property:ro.config.low_ram=true # Tweak background writeout write /proc/sys/vm/dirty_expire_centisecs 200 write /proc/sys/vm/dirty_background_ratio 5 on property:sys.boot_completed=1 && property:ro.config.batteryless=true # Flush data and checkpoint more aggressively to prepare sudden power cuts write /proc/sys/vm/dirty_expire_centisecs 200 write /proc/sys/vm/dirty_writeback_centisecs 200 write /proc/sys/vm/dirty_background_ratio 5 write /dev/sys/fs/by-name/userdata/cp_interval 2 on boot && property:suspend.disable_sync_on_suspend=true write /sys/power/sync_on_suspend 0 on boot # basic network init ifup lo hostname localhost domainname localdomain # IPsec SA default expiration length write /proc/sys/net/core/xfrm_acq_expires 3600 # Memory management. Basic kernel parameters, and allow the high # level system server to be able to adjust the kernel OOM driver # parameters to match how it is managing things. write /proc/sys/vm/overcommit_memory 1 write /proc/sys/vm/min_free_order_shift 4 # System server manages zram writeback chown root system /sys/block/zram0/idle chmod 0220 /sys/block/zram0/idle chown root system /sys/block/zram0/writeback chmod 0220 /sys/block/zram0/writeback # to access F2FS sysfs on dm- directly mkdir /dev/sys/fs/by-name 0755 system system symlink /sys/fs/f2fs/${dev.mnt.dev.data} /dev/sys/fs/by-name/userdata # dev.mnt.dev.data=dm-N, dev.mnt.blk.data=sdaN/mmcblk0pN, dev.mnt.rootdisk.data=sda/mmcblk0, or # dev.mnt.dev.data=sdaN/mmcblk0pN, dev.mnt.blk.data=sdaN/mmcblk0pN, dev.mnt.rootdisk.data=sda/mmcblk0 mkdir /dev/sys/block/by-name 0755 system system symlink /sys/block/${dev.mnt.dev.data} /dev/sys/block/by-name/userdata symlink /sys/block/${dev.mnt.rootdisk.data} /dev/sys/block/by-name/rootdisk # F2FS tuning. Set cp_interval larger than dirty_expire_centisecs, 30 secs, # to avoid power consumption when system becomes mostly idle. Be careful # to make it too large, since it may bring userdata loss, if they # are not aware of using fsync()/sync() to prepare sudden power-cut. write /dev/sys/fs/by-name/userdata/cp_interval 30 write /dev/sys/fs/by-name/userdata/gc_urgent_sleep_time 50 # set readahead multiplier for POSIX_FADV_SEQUENTIAL files write /dev/sys/fs/by-name/userdata/seq_file_ra_mul 128 # limit discard size to 128MB in order to avoid long IO latency # for filesystem tuning first (dm or sda) # this requires enabling selinux entry for sda/mmcblk0 in vendor side write /dev/sys/block/by-name/userdata/queue/discard_max_bytes 134217728 write /dev/sys/block/by-name/rootdisk/queue/discard_max_bytes 134217728 # Permissions for System Server and daemons. chown system system /sys/power/autosleep chown system system /sys/devices/system/cpu/cpufreq/interactive/timer_rate chmod 0660 /sys/devices/system/cpu/cpufreq/interactive/timer_rate chown system system /sys/devices/system/cpu/cpufreq/interactive/timer_slack chmod 0660 /sys/devices/system/cpu/cpufreq/interactive/timer_slack chown system system /sys/devices/system/cpu/cpufreq/interactive/min_sample_time chmod 0660 /sys/devices/system/cpu/cpufreq/interactive/min_sample_time chown system system /sys/devices/system/cpu/cpufreq/interactive/hispeed_freq chmod 0660 /sys/devices/system/cpu/cpufreq/interactive/hispeed_freq chown system system /sys/devices/system/cpu/cpufreq/interactive/target_loads chmod 0660 /sys/devices/system/cpu/cpufreq/interactive/target_loads chown system system /sys/devices/system/cpu/cpufreq/interactive/go_hispeed_load chmod 0660 /sys/devices/system/cpu/cpufreq/interactive/go_hispeed_load chown system system /sys/devices/system/cpu/cpufreq/interactive/above_hispeed_delay chmod 0660 /sys/devices/system/cpu/cpufreq/interactive/above_hispeed_delay chown system system /sys/devices/system/cpu/cpufreq/interactive/boost chmod 0660 /sys/devices/system/cpu/cpufreq/interactive/boost chown system system /sys/devices/system/cpu/cpufreq/interactive/boostpulse chown system system /sys/devices/system/cpu/cpufreq/interactive/input_boost chmod 0660 /sys/devices/system/cpu/cpufreq/interactive/input_boost chown system system /sys/devices/system/cpu/cpufreq/interactive/boostpulse_duration chmod 0660 /sys/devices/system/cpu/cpufreq/interactive/boostpulse_duration chown system system /sys/devices/system/cpu/cpufreq/interactive/io_is_busy chmod 0660 /sys/devices/system/cpu/cpufreq/interactive/io_is_busy chown system system /sys/class/leds/vibrator/trigger chown system system /sys/class/leds/vibrator/activate chown system system /sys/class/leds/vibrator/brightness chown system system /sys/class/leds/vibrator/duration chown system system /sys/class/leds/vibrator/state chown system system /sys/class/timed_output/vibrator/enable chown system system /sys/class/leds/keyboard-backlight/brightness chown system system /sys/class/leds/lcd-backlight/brightness chown system system /sys/class/leds/button-backlight/brightness chown system system /sys/class/leds/jogball-backlight/brightness chown system system /sys/class/leds/red/brightness chown system system /sys/class/leds/green/brightness chown system system /sys/class/leds/blue/brightness chown system system /sys/class/leds/red/device/grpfreq chown system system /sys/class/leds/red/device/grppwm chown system system /sys/class/leds/red/device/blink chown system system /sys/module/sco/parameters/disable_esco chown system system /sys/kernel/ipv4/tcp_wmem_min chown system system /sys/kernel/ipv4/tcp_wmem_def chown system system /sys/kernel/ipv4/tcp_wmem_max chown system system /sys/kernel/ipv4/tcp_rmem_min chown system system /sys/kernel/ipv4/tcp_rmem_def chown system system /sys/kernel/ipv4/tcp_rmem_max chown system system /sys/firmware/acpi/tables chown system system /sys/firmware/acpi/tables/BERT chown system system /sys/firmware/acpi/tables/data/BERT chown root radio /proc/cmdline chown root system /proc/bootconfig # Define default initial receive window size in segments. setprop net.tcp_def_init_rwnd 60 # Start standard binderized HAL daemons class_start hal class_start core on boot && property:ro.debuggable=1 write /dev/sys/fs/by-name/userdata/iostat_period_ms 1000 write /dev/sys/fs/by-name/userdata/iostat_enable 1 on nonencrypted class_start main class_start late_start on property:sys.init_log_level=* loglevel ${sys.init_log_level} on charger class_start charger on property:sys.boot_completed=1 bootchart stop # Setup per_boot directory so other .rc could start to use it on boot_completed exec - system system -- /bin/rm -rf /data/per_boot mkdir /data/per_boot 0710 system system encryption=Require key=per_boot_ref # system server cannot write to /proc/sys files, # and chown/chmod does not work for /proc/sys/ entries. # So proxy writes through init. on property:sys.sysctl.extra_free_kbytes=* exec_background -- /system/bin/extra_free_kbytes.sh ${sys.sysctl.extra_free_kbytes} # Allow users to drop caches on property:perf.drop_caches=3 write /proc/sys/vm/drop_caches 3 setprop perf.drop_caches 0 # "tcp_default_init_rwnd" Is too long! on property:net.tcp_def_init_rwnd=* write /proc/sys/net/ipv4/tcp_default_init_rwnd ${net.tcp_def_init_rwnd} import /system/etc/init/init-perfetto.rc # on shutdown # In device's init.rc, this trigger can be used to do device-specific actions # before shutdown. e.g disable watchdog and mask error handling ## Daemon processes to be run by init. ## service ueventd /system/bin/ueventd class core critical seclabel u:r:ueventd:s0 user root shutdown critical # This service takes care of early initialization of device configuration at # runtime, like per-SKU settings or sysprops. The service runs before apexd # bootstrap, which means it can also be used to perform conditional APEX # activation via selection sysprops (e.g. setting ro.boot.vendor.apex.*). # The 'ro.vendor.init_dev_config.path' sysprop should be configured at build # time via PRODUCT_VENDOR_PROPERTIES, and must point to a binary built with # bootstrap bionic and labeled as 'init_dev_config_exec'. service init_dev_config ${ro.vendor.init_dev_config.path} oneshot user system seclabel u:r:init_dev_config:s0 service console /system/bin/sh class core console disabled user shell group shell log readproc seclabel u:r:shell:s0 setenv HOSTNAME console shutdown critical on property:ro.debuggable=1 # Give writes to the same group for the trace folder on debug builds, # it's further protected by selinux policy. # The folder is used to store method traces. chmod 0773 /data/misc/trace # Give writes and reads to anyone for the window trace folder on debug builds, # it's further protected by selinux policy. chmod 0777 /data/misc/wmtrace # Give reads to anyone for the accessibility trace folder on debug builds. chmod 0775 /data/misc/a11ytrace on init && property:ro.debuggable=1 && property:ro.console.enable=1 start console # Allow other processes to run `snapshotctl` through `init`. This requires # `set_prop` permission on `snapshotctl_prop`. on property:sys.snapshotctl.map=requested # "root" is needed to talk to gsid and pass its check on uid. # "system" is needed to write to "/dev/socket/snapuserd" to talk to # snapuserd. exec - root root system -- /system/bin/snapshotctl map setprop sys.snapshotctl.map "finished" on property:sys.snapshotctl.unmap=requested exec - root root system -- /system/bin/snapshotctl unmap setprop sys.snapshotctl.unmap "finished" on property:persist.sys.is_upgrade=1 exec - system system -- /bin/rm -rf /data/system/package_cache exec - system system -- /bin/rm -rf /data/resource-cache