diff --git a/init/README.md b/init/README.md
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--- /dev/null
+++ b/init/README.md
@@ -0,0 +1,560 @@
+Android Init Language
+---------------------
+
+The Android Init Language consists of five broad classes of statements:
+Actions, Commands, Services, Options, and Imports.
+
+All of these are line-oriented, consisting of tokens separated by
+whitespace.  The c-style backslash escapes may be used to insert
+whitespace into a token.  Double quotes may also be used to prevent
+whitespace from breaking text into multiple tokens.  The backslash,
+when it is the last character on a line, may be used for line-folding.
+
+Lines which start with a # (leading whitespace allowed) are comments.
+
+Actions and Services implicitly declare a new section.  All commands
+or options belong to the section most recently declared.  Commands
+or options before the first section are ignored.
+
+Actions and Services have unique names.  If a second Action is defined
+with the same name as an existing one, its commands are appended to
+the commands of the existing action.  If a second Service is defined
+with the same name as an existing one, it is ignored and an error
+message is logged.
+
+
+Init .rc Files
+--------------
+The init language is used in plain text files that take the .rc file
+extension.  These are typically multiple of these in multiple
+locations on the system, described below.
+
+/init.rc is the primary .rc file and is loaded by the init executable
+at the beginning of its execution.  It is responsible for the initial
+set up of the system.  It imports /init.${ro.hardware}.rc which is the
+primary vendor supplied .rc file.
+
+During the mount\_all command, the init executable loads all of the
+files contained within the /{system,vendor,odm}/etc/init/ directories.
+These directories are intended for all Actions and Services used after
+file system mounting.
+
+One may specify paths in the mount\_all command line to have it import
+.rc files at the specified paths instead of the default ones listed above.
+This is primarily for supporting factory mode and other non-standard boot
+modes.  The three default paths should be used for the normal boot process.
+
+The intention of these directories is:
+
+   1. /system/etc/init/ is for core system items such as
+      SurfaceFlinger, MediaService, and logcatd.
+   2. /vendor/etc/init/ is for SoC vendor items such as actions or
+      daemons needed for core SoC functionality.
+   3. /odm/etc/init/ is for device manufacturer items such as
+      actions or daemons needed for motion sensor or other peripheral
+      functionality.
+
+All services whose binaries reside on the system, vendor, or odm
+partitions should have their service entries placed into a
+corresponding init .rc file, located in the /etc/init/
+directory of the partition where they reside.  There is a build
+system macro, LOCAL\_INIT\_RC, that handles this for developers.  Each
+init .rc file should additionally contain any actions associated with
+its service.
+
+An example is the logcatd.rc and Android.mk files located in the
+system/core/logcat directory.  The LOCAL\_INIT\_RC macro in the
+Android.mk file places logcatd.rc in /system/etc/init/ during the
+build process.  Init loads logcatd.rc during the mount\_all command and
+allows the service to be run and the action to be queued when
+appropriate.
+
+This break up of init .rc files according to their daemon is preferred
+to the previously used monolithic init .rc files.  This approach
+ensures that the only service entries that init reads and the only
+actions that init performs correspond to services whose binaries are in
+fact present on the file system, which was not the case with the
+monolithic init .rc files.  This additionally will aid in merge
+conflict resolution when multiple services are added to the system, as
+each one will go into a separate file.
+
+There are two options "early" and "late" in mount\_all command
+which can be set after optional paths. With "--early" set, the
+init executable will skip mounting entries with "latemount" flag
+and triggering fs encryption state event. With "--late" set,
+init executable will only mount entries with "latemount" flag but skip
+importing rc files. By default, no option is set, and mount\_all will
+process all entries in the given fstab.
+
+Actions
+-------
+Actions are named sequences of commands.  Actions have a trigger which
+is used to determine when the action should occur.  When an event
+occurs which matches an action's trigger, that action is added to
+the tail of a to-be-executed queue (unless it is already on the
+queue).
+
+Each action in the queue is dequeued in sequence and each command in
+that action is executed in sequence.  Init handles other activities
+(device creation/destruction, property setting, process restarting)
+"between" the execution of the commands in activities.
+
+Actions take the form of:
+
+    on <trigger> [&& <trigger>]*
+       <command>
+       <command>
+       <command>
+
+
+Services
+--------
+Services are programs which init launches and (optionally) restarts
+when they exit.  Services take the form of:
+
+    service <name> <pathname> [ <argument> ]*
+       <option>
+       <option>
+       ...
+
+
+Options
+-------
+Options are modifiers to services.  They affect how and when init
+runs the service.
+
+`console [<console>]`
+> This service needs a console. The optional second parameter chooses a
+  specific console instead of the default. The default "/dev/console" can
+  be changed by setting the "androidboot.console" kernel parameter. In
+  all cases the leading "/dev/" should be omitted, so "/dev/tty0" would be
+  specified as just "console tty0".
+
+`critical`
+> This is a device-critical service. If it exits more than four times in
+  four minutes, the device will reboot into recovery mode.
+
+`disabled`
+> This service will not automatically start with its class.
+  It must be explicitly started by name.
+
+`setenv <name> <value>`
+> Set the environment variable _name_ to _value_ in the launched process.
+
+`socket <name> <type> <perm> [ <user> [ <group> [ <seclabel> ] ] ]`
+> Create a unix domain socket named /dev/socket/_name_ and pass its fd to the
+  launched process.  _type_ must be "dgram", "stream" or "seqpacket".  User and
+  group default to 0.  'seclabel' is the SELinux security context for the
+  socket.  It defaults to the service security context, as specified by
+  seclabel or computed based on the service executable file security context.
+  For native executables see libcutils android\_get\_control\_socket().
+
+`file <path> <type>`
+> Open a file path and pass its fd to the launched process. _type_ must be
+  "r", "w" or "rw".  For native executables see libcutils
+  android\_get\_control\_file().
+
+`user <username>`
+> Change to 'username' before exec'ing this service.
+  Currently defaults to root.  (??? probably should default to nobody)
+  As of Android M, processes should use this option even if they
+  require Linux capabilities.  Previously, to acquire Linux
+  capabilities, a process would need to run as root, request the
+  capabilities, then drop to its desired uid.  There is a new
+  mechanism through fs\_config that allows device manufacturers to add
+  Linux capabilities to specific binaries on a file system that should
+  be used instead. This mechanism is described on
+  <http://source.android.com/devices/tech/config/filesystem.html>.  When
+  using this new mechanism, processes can use the user option to
+  select their desired uid without ever running as root.
+  As of Android O, processes can also request capabilities directly in their .rc
+  files. See the "capabilities" option below.
+
+`group <groupname> [ <groupname>\* ]`
+> Change to 'groupname' before exec'ing this service.  Additional
+  groupnames beyond the (required) first one are used to set the
+  supplemental groups of the process (via setgroups()).
+  Currently defaults to root.  (??? probably should default to nobody)
+
+`capabilities <capability> [ <capability>\* ]`
+> Set capabilities when exec'ing this service. 'capability' should be a Linux
+  capability without the "CAP\_" prefix, like "NET\_ADMIN" or "SETPCAP". See
+  http://man7.org/linux/man-pages/man7/capabilities.7.html for a list of Linux
+  capabilities.
+
+`seclabel <seclabel>`
+> Change to 'seclabel' before exec'ing this service.
+  Primarily for use by services run from the rootfs, e.g. ueventd, adbd.
+  Services on the system partition can instead use policy-defined transitions
+  based on their file security context.
+  If not specified and no transition is defined in policy, defaults to the init context.
+
+`oneshot`
+> Do not restart the service when it exits.
+
+`class <name>`
+> Specify a class name for the service.  All services in a
+  named class may be started or stopped together.  A service
+  is in the class "default" if one is not specified via the
+  class option.
+
+`onrestart`
+> Execute a Command (see below) when service restarts.
+
+`writepid <file...>`
+> Write the child's pid to the given files when it forks. Meant for
+  cgroup/cpuset usage.
+
+`priority <priority>`
+> Scheduling priority of the service process. This value has to be in range
+  -20 to 19. Default priority is 0. Priority is set via setpriority().
+
+`namespace <pid|mnt>`
+> Enter a new PID or mount namespace when forking the service.
+
+`oom_score_adjust <value>`
+> Sets the child's /proc/self/oom\_score\_adj to the specified value,
+  which must range from -1000 to 1000.
+
+
+Triggers
+--------
+Triggers are strings which can be used to match certain kinds of
+events and used to cause an action to occur.
+
+Triggers are subdivided into event triggers and property triggers.
+
+Event triggers are strings triggered by the 'trigger' command or by
+the QueueEventTrigger() function within the init executable.  These
+take the form of a simple string such as 'boot' or 'late-init'.
+
+Property triggers are strings triggered when a named property changes
+value to a given new value or when a named property changes value to
+any new value.  These take the form of 'property:<name>=<value>' and
+'property:<name>=\*' respectively.  Property triggers are additionally
+evaluated and triggered accordingly during the initial boot phase of
+init.
+
+An Action can have multiple property triggers but may only have one
+event trigger.
+
+For example:
+`on boot && property:a=b` defines an action that is only executed when
+the 'boot' event trigger happens and the property a equals b.
+
+`on property:a=b && property:c=d` defines an action that is executed
+at three times:
+
+   1. During initial boot if property a=b and property c=d.
+   2. Any time that property a transitions to value b, while property c already equals d.
+   3. Any time that property c transitions to value d, while property a already equals b.
+
+
+Commands
+--------
+
+`bootchart [start|stop]`
+> Start/stop bootcharting. These are present in the default init.rc files,
+  but bootcharting is only active if the file /data/bootchart/enabled exists;
+  otherwise bootchart start/stop are no-ops.
+
+`chmod <octal-mode> <path>`
+> Change file access permissions.
+
+`chown <owner> <group> <path>`
+> Change file owner and group.
+
+`class_start <serviceclass>`
+> Start all services of the specified class if they are
+  not already running.
+
+`class_stop <serviceclass>`
+> Stop and disable all services of the specified class if they are
+  currently running.
+
+`class_reset <serviceclass>`
+> Stop all services of the specified class if they are
+  currently running, without disabling them. They can be restarted
+  later using `class_start`.
+
+`copy <src> <dst>`
+> Copies a file. Similar to write, but useful for binary/large
+  amounts of data.
+
+`domainname <name>`
+> Set the domain name.
+
+`enable <servicename>`
+> Turns a disabled service into an enabled one as if the service did not
+  specify disabled.
+  If the service is supposed to be running, it will be started now.
+  Typically used when the bootloader sets a variable that indicates a specific
+  service should be started when needed. E.g.
+
+    on property:ro.boot.myfancyhardware=1
+        enable my_fancy_service_for_my_fancy_hardware
+
+`exec [ <seclabel> [ <user> [ <group>\* ] ] ] -- <command> [ <argument>\* ]`
+> Fork and execute command with the given arguments. The command starts
+  after "--" so that an optional security context, user, and supplementary
+  groups can be provided. No other commands will be run until this one
+  finishes. _seclabel_ can be a - to denote default.
+
+`export <name> <value>`
+> Set the environment variable _name_ equal to _value_ in the
+  global environment (which will be inherited by all processes
+  started after this command is executed)
+
+`hostname <name>`
+> Set the host name.
+
+`ifup <interface>`
+> Bring the network interface _interface_ online.
+
+`insmod [-f] <path> [<options>]`
+> Install the module at _path_ with the specified options.
+  -f: force installation of the module even if the version of the running kernel
+  and the version of the kernel for which the module was compiled do not match.
+
+`load_all_props`
+> Loads properties from /system, /vendor, et cetera.
+  This is included in the default init.rc.
+
+`load_persist_props`
+> Loads persistent properties when /data has been decrypted.
+  This is included in the default init.rc.
+
+`loglevel <level>`
+> Sets the kernel log level to level. Properties are expanded within _level_.
+
+`mkdir <path> [mode] [owner] [group]`
+> Create a directory at _path_, optionally with the given mode, owner, and
+  group. If not provided, the directory is created with permissions 755 and
+  owned by the root user and root group. If provided, the mode, owner and group
+  will be updated if the directory exists already.
+
+`mount_all <fstab> [ <path> ]\* [--<option>]`
+> Calls fs\_mgr\_mount\_all on the given fs\_mgr-format fstab and imports .rc files
+  at the specified paths (e.g., on the partitions just mounted) with optional
+  options "early" and "late".
+  Refer to the section of "Init .rc Files" for detail.
+
+`mount <type> <device> <dir> [ <flag>\* ] [<options>]`
+> Attempt to mount the named device at the directory _dir_
+  _flag_s include "ro", "rw", "remount", "noatime", ...
+  _options_ include "barrier=1", "noauto\_da\_alloc", "discard", ... as
+  a comma separated string, eg: barrier=1,noauto\_da\_alloc
+
+`powerctl`
+> Internal implementation detail used to respond to changes to the
+  "sys.powerctl" system property, used to implement rebooting.
+
+`restart <service>`
+> Like stop, but doesn't disable the service.
+
+`restorecon <path> [ <path>\* ]`
+> Restore the file named by _path_ to the security context specified
+  in the file\_contexts configuration.
+  Not required for directories created by the init.rc as these are
+  automatically labeled correctly by init.
+
+`restorecon_recursive <path> [ <path>\* ]`
+> Recursively restore the directory tree named by _path_ to the
+  security contexts specified in the file\_contexts configuration.
+
+`rm <path>`
+> Calls unlink(2) on the given path. You might want to
+  use "exec -- rm ..." instead (provided the system partition is
+  already mounted).
+
+`rmdir <path>`
+> Calls rmdir(2) on the given path.
+
+`setprop <name> <value>`
+> Set system property _name_ to _value_. Properties are expanded
+  within _value_.
+
+`setrlimit <resource> <cur> <max>`
+> Set the rlimit for a resource.
+
+`start <service>`
+> Start a service running if it is not already running.
+
+`stop <service>`
+> Stop a service from running if it is currently running.
+
+`swapon_all <fstab>`
+> Calls fs\_mgr\_swapon\_all on the given fstab file.
+
+`symlink <target> <path>`
+> Create a symbolic link at _path_ with the value _target_
+
+`sysclktz <mins_west_of_gmt>`
+> Set the system clock base (0 if system clock ticks in GMT)
+
+`trigger <event>`
+> Trigger an event.  Used to queue an action from another
+  action.
+
+`umount <path>`
+> Unmount the filesystem mounted at that path.
+
+`verity_load_state`
+> Internal implementation detail used to load dm-verity state.
+
+`verity_update_state <mount-point>`
+> Internal implementation detail used to update dm-verity state and
+  set the partition._mount-point_.verified properties used by adb remount
+  because fs\_mgr can't set them directly itself.
+
+`wait <path> [ <timeout> ]`
+> Poll for the existence of the given file and return when found,
+  or the timeout has been reached. If timeout is not specified it
+  currently defaults to five seconds.
+
+`write <path> <content>`
+> Open the file at _path_ and write a string to it with write(2).
+  If the file does not exist, it will be created. If it does exist,
+  it will be truncated. Properties are expanded within _content_.
+
+
+Imports
+-------
+The import keyword is not a command, but rather its own section and is
+handled immediately after the .rc file that contains it has finished
+being parsed.  It takes the below form:
+
+`import <path>`
+> Parse an init config file, extending the current configuration.
+  If _path_ is a directory, each file in the directory is parsed as
+  a config file. It is not recursive, nested directories will
+  not be parsed.
+
+There are only two times where the init executable imports .rc files:
+
+   1. When it imports /init.rc during initial boot
+   2. When it imports /{system,vendor,odm}/etc/init/ or .rc files at specified
+      paths during mount_all
+
+
+Properties
+----------
+Init provides information about the services that it is responsible
+for via the below properties.
+
+`init.svc.<name>`
+> State of a named service ("stopped", "stopping", "running", "restarting")
+
+
+Boot timing
+-----------
+Init records some boot timing information in system properties.
+
+`ro.boottime.init`
+> Time after boot in ns (via the CLOCK\_BOOTTIME clock) at which the first
+  stage of init started.
+
+`ro.boottime.init.selinux`
+> How long it took the first stage to initialize SELinux.
+
+`ro.boottime.init.cold_boot_wait`
+> How long init waited for ueventd's coldboot phase to end.
+
+`ro.boottime.<service-name>`
+> Time after boot in ns (via the CLOCK\_BOOTTIME clock) that the service was
+  first started.
+
+
+Bootcharting
+------------
+This version of init contains code to perform "bootcharting": generating log
+files that can be later processed by the tools provided by <http://www.bootchart.org/>.
+
+On the emulator, use the -bootchart _timeout_ option to boot with bootcharting
+activated for _timeout_ seconds.
+
+On a device:
+
+    adb shell 'touch /data/bootchart/enabled'
+
+Don't forget to delete this file when you're done collecting data!
+
+The log files are written to /data/bootchart/. A script is provided to
+retrieve them and create a bootchart.tgz file that can be used with the
+bootchart command-line utility:
+
+    sudo apt-get install pybootchartgui
+    # grab-bootchart.sh uses $ANDROID_SERIAL.
+    $ANDROID_BUILD_TOP/system/core/init/grab-bootchart.sh
+
+One thing to watch for is that the bootchart will show init as if it started
+running at 0s. You'll have to look at dmesg to work out when the kernel
+actually started init.
+
+
+Comparing two bootcharts
+------------------------
+A handy script named compare-bootcharts.py can be used to compare the
+start/end time of selected processes. The aforementioned grab-bootchart.sh
+will leave a bootchart tarball named bootchart.tgz at /tmp/android-bootchart.
+If two such barballs are preserved on the host machine under different
+directories, the script can list the timestamps differences. For example:
+
+Usage: system/core/init/compare-bootcharts.py _base-bootchart-dir_ _exp-bootchart-dir_
+
+    process: baseline experiment (delta) - Unit is ms (a jiffy is 10 ms on the system)
+    ------------------------------------
+    /init: 50 40 (-10)
+    /system/bin/surfaceflinger: 4320 4470 (+150)
+    /system/bin/bootanimation: 6980 6990 (+10)
+    zygote64: 10410 10640 (+230)
+    zygote: 10410 10640 (+230)
+    system_server: 15350 15150 (-200)
+    bootanimation ends at: 33790 31230 (-2560)
+
+
+Systrace
+--------
+Systrace (<http://developer.android.com/tools/help/systrace.html>) can be
+used for obtaining performance analysis reports during boot
+time on userdebug or eng builds.
+
+Here is an example of trace events of "wm" and "am" categories:
+
+    $ANDROID_BUILD_TOP/external/chromium-trace/systrace.py \
+          wm am --boot
+
+This command will cause the device to reboot. After the device is rebooted and
+the boot sequence has finished, the trace report is obtained from the device
+and written as trace.html on the host by hitting Ctrl+C.
+
+Limitation: recording trace events is started after persistent properties are loaded, so
+the trace events that are emitted before that are not recorded. Several
+services such as vold, surfaceflinger, and servicemanager are affected by this
+limitation since they are started before persistent properties are loaded.
+Zygote initialization and the processes that are forked from the zygote are not
+affected.
+
+
+Debugging init
+--------------
+By default, programs executed by init will drop stdout and stderr into
+/dev/null. To help with debugging, you can execute your program via the
+Android program logwrapper. This will redirect stdout/stderr into the
+Android logging system (accessed via logcat).
+
+For example
+service akmd /system/bin/logwrapper /sbin/akmd
+
+For quicker turnaround when working on init itself, use:
+
+    mm -j &&
+    m ramdisk-nodeps &&
+    m bootimage-nodeps &&
+    adb reboot bootloader &&
+    fastboot boot $ANDROID_PRODUCT_OUT/boot.img
+
+Alternatively, use the emulator:
+
+    emulator -partition-size 1024 \
+        -verbose -show-kernel -no-window
diff --git a/init/readme.txt b/init/readme.txt
deleted file mode 100644
index 530b392..0000000
--- a/init/readme.txt
+++ /dev/null
@@ -1,560 +0,0 @@
-Android Init Language
----------------------
-
-The Android Init Language consists of five broad classes of statements,
-which are Actions, Commands, Services, Options, and Imports.
-
-All of these are line-oriented, consisting of tokens separated by
-whitespace.  The c-style backslash escapes may be used to insert
-whitespace into a token.  Double quotes may also be used to prevent
-whitespace from breaking text into multiple tokens.  The backslash,
-when it is the last character on a line, may be used for line-folding.
-
-Lines which start with a # (leading whitespace allowed) are comments.
-
-Actions and Services implicitly declare a new section.  All commands
-or options belong to the section most recently declared.  Commands
-or options before the first section are ignored.
-
-Actions and Services have unique names.  If a second Action is defined
-with the same name as an existing one, its commands are appended to
-the commands of the existing action.  If a second Service is defined
-with the same name as an existing one, it is ignored and an error
-message is logged.
-
-
-Init .rc Files
---------------
-The init language is used in plaintext files that take the .rc file
-extension.  These are typically multiple of these in multiple
-locations on the system, described below.
-
-/init.rc is the primary .rc file and is loaded by the init executable
-at the beginning of its execution.  It is responsible for the initial
-set up of the system.  It imports /init.${ro.hardware}.rc which is the
-primary vendor supplied .rc file.
-
-During the mount_all command, the init executable loads all of the
-files contained within the /{system,vendor,odm}/etc/init/ directories.
-These directories are intended for all Actions and Services used after
-file system mounting.
-
-One may specify paths in the mount_all command line to have it import
-.rc files at the specified paths instead of the default ones listed above.
-This is primarily for supporting factory mode and other non-standard boot
-modes.  The three default paths should be used for the normal boot process.
-
-The intention of these directories is as follows
-   1) /system/etc/init/ is for core system items such as
-      SurfaceFlinger, MediaService, and logcatd.
-   2) /vendor/etc/init/ is for SoC vendor items such as actions or
-      daemons needed for core SoC functionality.
-   3) /odm/etc/init/ is for device manufacturer items such as
-      actions or daemons needed for motion sensor or other peripheral
-      functionality.
-
-All services whose binaries reside on the system, vendor, or odm
-partitions should have their service entries placed into a
-corresponding init .rc file, located in the /etc/init/
-directory of the partition where they reside.  There is a build
-system macro, LOCAL_INIT_RC, that handles this for developers.  Each
-init .rc file should additionally contain any actions associated with
-its service.
-
-An example is the logcatd.rc and Android.mk files located in the
-system/core/logcat directory.  The LOCAL_INIT_RC macro in the
-Android.mk file places logcatd.rc in /system/etc/init/ during the
-build process.  Init loads logcatd.rc during the mount_all command and
-allows the service to be run and the action to be queued when
-appropriate.
-
-This break up of init .rc files according to their daemon is preferred
-to the previously used monolithic init .rc files.  This approach
-ensures that the only service entries that init reads and the only
-actions that init performs correspond to services whose binaries are in
-fact present on the file system, which was not the case with the
-monolithic init .rc files.  This additionally will aid in merge
-conflict resolution when multiple services are added to the system, as
-each one will go into a separate file.
-
-There are two options "early" and "late" in mount_all command
-which can be set after optional paths. With "--early" set, the
-init executable will skip mounting entries with "latemount" flag
-and triggering fs encryption state event. With "--late" set,
-init executable will only mount entries with "latemount" flag but skip
-importing rc files. By default, no option is set, and mount_all will
-mount_all will process all entries in the given fstab.
-
-Actions
--------
-Actions are named sequences of commands.  Actions have a trigger which
-is used to determine when the action should occur.  When an event
-occurs which matches an action's trigger, that action is added to
-the tail of a to-be-executed queue (unless it is already on the
-queue).
-
-Each action in the queue is dequeued in sequence and each command in
-that action is executed in sequence.  Init handles other activities
-(device creation/destruction, property setting, process restarting)
-"between" the execution of the commands in activities.
-
-Actions take the form of:
-
-on <trigger> [&& <trigger>]*
-   <command>
-   <command>
-   <command>
-
-
-Services
---------
-Services are programs which init launches and (optionally) restarts
-when they exit.  Services take the form of:
-
-service <name> <pathname> [ <argument> ]*
-   <option>
-   <option>
-   ...
-
-
-Options
--------
-Options are modifiers to services.  They affect how and when init
-runs the service.
-
-console [<console>]
-  This service needs a console. The optional second parameter chooses a
-  specific console instead of the default. The default "/dev/console" can
-  be changed by setting the "androidboot.console" kernel parameter. In
-  all cases the leading "/dev/" should be omitted, so "/dev/tty0" would be
-  specified as just "console tty0".
-
-critical
-  This is a device-critical service. If it exits more than four times in
-  four minutes, the device will reboot into recovery mode.
-
-disabled
-  This service will not automatically start with its class.
-  It must be explicitly started by name.
-
-setenv <name> <value>
-  Set the environment variable <name> to <value> in the launched process.
-
-socket <name> <type> <perm> [ <user> [ <group> [ <seclabel> ] ] ]
-  Create a unix domain socket named /dev/socket/<name> and pass its fd to the
-  launched process.  <type> must be "dgram", "stream" or "seqpacket".  User and
-  group default to 0.  'seclabel' is the SELinux security context for the
-  socket.  It defaults to the service security context, as specified by
-  seclabel or computed based on the service executable file security context.
-  For native executables see libcutils android_get_control_socket().
-
-file <path> <type>
-  Open a file path and pass its fd to the launched process.  <type> must be
-  "r", "w" or "rw".  For native executables see libcutils
-  android_get_control_file().
-
-user <username>
-  Change to 'username' before exec'ing this service.
-  Currently defaults to root.  (??? probably should default to nobody)
-  As of Android M, processes should use this option even if they
-  require Linux capabilities.  Previously, to acquire Linux
-  capabilities, a process would need to run as root, request the
-  capabilities, then drop to its desired uid.  There is a new
-  mechanism through fs_config that allows device manufacturers to add
-  Linux capabilities to specific binaries on a file system that should
-  be used instead. This mechanism is described on
-  http://source.android.com/devices/tech/config/filesystem.html.  When
-  using this new mechanism, processes can use the user option to
-  select their desired uid without ever running as root.
-  As of Android O, processes can also request capabilities directly in their .rc
-  files. See the "capabilities" option below.
-
-group <groupname> [ <groupname> ]*
-  Change to 'groupname' before exec'ing this service.  Additional
-  groupnames beyond the (required) first one are used to set the
-  supplemental groups of the process (via setgroups()).
-  Currently defaults to root.  (??? probably should default to nobody)
-
-capabilities <capability> [ <capability> ]*
-  Set capabilities when exec'ing this service. 'capability' should be a Linux
-  capability without the "CAP_" prefix, like "NET_ADMIN" or "SETPCAP". See
-  http://man7.org/linux/man-pages/man7/capabilities.7.html for a list of Linux
-  capabilities.
-
-seclabel <seclabel>
-  Change to 'seclabel' before exec'ing this service.
-  Primarily for use by services run from the rootfs, e.g. ueventd, adbd.
-  Services on the system partition can instead use policy-defined transitions
-  based on their file security context.
-  If not specified and no transition is defined in policy, defaults to the init context.
-
-oneshot
-  Do not restart the service when it exits.
-
-class <name>
-  Specify a class name for the service.  All services in a
-  named class may be started or stopped together.  A service
-  is in the class "default" if one is not specified via the
-  class option.
-
-onrestart
-  Execute a Command (see below) when service restarts.
-
-writepid <file...>
-  Write the child's pid to the given files when it forks. Meant for
-  cgroup/cpuset usage.
-
-priority <priority>
-  Scheduling priority of the service process. This value has to be in range
-  -20 to 19. Default priority is 0. Priority is set via setpriority().
-
-namespace <pid|mnt>
-  Enter a new PID or mount namespace when forking the service.
-
-oom_score_adjust <value>
-   Sets the child's /proc/self/oom_score_adj to the specified value,
-   which must range from -1000 to 1000.
-
-
-Triggers
---------
-Triggers are strings which can be used to match certain kinds of
-events and used to cause an action to occur.
-
-Triggers are subdivided into event triggers and property triggers.
-
-Event triggers are strings triggered by the 'trigger' command or by
-the QueueEventTrigger() function within the init executable.  These
-take the form of a simple string such as 'boot' or 'late-init'.
-
-Property triggers are strings triggered when a named property changes
-value to a given new value or when a named property changes value to
-any new value.  These take the form of 'property:<name>=<value>' and
-'property:<name>=*' respectively.  Property triggers are additionally
-evaluated and triggered accordingly during the initial boot phase of
-init.
-
-An Action can have multiple property triggers but may only have one
-event trigger.
-
-For example:
-'on boot && property:a=b' defines an action that is only executed when
-the 'boot' event trigger happens and the property a equals b.
-
-'on property:a=b && property:c=d' defines an action that is executed
-at three times,
-   1) During initial boot if property a=b and property c=d
-   2) Any time that property a transitions to value b, while property
-      c already equals d.
-   3) Any time that property c transitions to value d, while property
-      a already equals b.
-
-
-Commands
---------
-
-bootchart [start|stop]
-   Start/stop bootcharting. These are present in the default init.rc files,
-   but bootcharting is only active if the file /data/bootchart/enabled exists;
-   otherwise bootchart start/stop are no-ops.
-
-chmod <octal-mode> <path>
-   Change file access permissions.
-
-chown <owner> <group> <path>
-   Change file owner and group.
-
-class_start <serviceclass>
-   Start all services of the specified class if they are
-   not already running.
-
-class_stop <serviceclass>
-   Stop and disable all services of the specified class if they are
-   currently running.
-
-class_reset <serviceclass>
-   Stop all services of the specified class if they are
-   currently running, without disabling them. They can be restarted
-   later using class_start.
-
-copy <src> <dst>
-   Copies a file. Similar to write, but useful for binary/large
-   amounts of data.
-
-domainname <name>
-   Set the domain name.
-
-enable <servicename>
-   Turns a disabled service into an enabled one as if the service did not
-   specify disabled.
-   If the service is supposed to be running, it will be started now.
-   Typically used when the bootloader sets a variable that indicates a specific
-   service should be started when needed. E.g.
-     on property:ro.boot.myfancyhardware=1
-        enable my_fancy_service_for_my_fancy_hardware
-
-exec [ <seclabel> [ <user> [ <group> ]* ] ] -- <command> [ <argument> ]*
-   Fork and execute command with the given arguments. The command starts
-   after "--" so that an optional security context, user, and supplementary
-   groups can be provided. No other commands will be run until this one
-   finishes. <seclabel> can be a - to denote default.
-
-export <name> <value>
-   Set the environment variable <name> equal to <value> in the
-   global environment (which will be inherited by all processes
-   started after this command is executed)
-
-hostname <name>
-   Set the host name.
-
-ifup <interface>
-   Bring the network interface <interface> online.
-
-insmod [-f] <path> [<options>]
-   Install the module at <path> with the specified options.
-   -f
-   Force installation of the module even if the version of the running kernel
-   and the version of the kernel for which the module was compiled do not match.
-
-load_all_props
-   Loads properties from /system, /vendor, et cetera.
-   This is included in the default init.rc.
-
-load_persist_props
-   Loads persistent properties when /data has been decrypted.
-   This is included in the default init.rc.
-
-loglevel <level>
-   Sets the kernel log level to level. Properties are expanded within <level>.
-
-mkdir <path> [mode] [owner] [group]
-   Create a directory at <path>, optionally with the given mode, owner, and
-   group. If not provided, the directory is created with permissions 755 and
-   owned by the root user and root group. If provided, the mode, owner and group
-   will be updated if the directory exists already.
-
-mount_all <fstab> [ <path> ]* [--<option>]
-   Calls fs_mgr_mount_all on the given fs_mgr-format fstab and imports .rc files
-   at the specified paths (e.g., on the partitions just mounted) with optional
-   options "early" and "late".
-   Refer to the section of "Init .rc Files" for detail.
-
-mount <type> <device> <dir> [ <flag> ]* [<options>]
-   Attempt to mount the named device at the directory <dir>
-   <flag>s include "ro", "rw", "remount", "noatime", ...
-   <options> include "barrier=1", "noauto_da_alloc", "discard", ... as
-   a comma separated string, eg: barrier=1,noauto_da_alloc
-
-powerctl
-   Internal implementation detail used to respond to changes to the
-   "sys.powerctl" system property, used to implement rebooting.
-
-restart <service>
-   Like stop, but doesn't disable the service.
-
-restorecon <path> [ <path> ]*
-   Restore the file named by <path> to the security context specified
-   in the file_contexts configuration.
-   Not required for directories created by the init.rc as these are
-   automatically labeled correctly by init.
-
-restorecon_recursive <path> [ <path> ]*
-   Recursively restore the directory tree named by <path> to the
-   security contexts specified in the file_contexts configuration.
-
-rm <path>
-   Calls unlink(2) on the given path. You might want to
-   use "exec -- rm ..." instead (provided the system partition is
-   already mounted).
-
-rmdir <path>
-   Calls rmdir(2) on the given path.
-
-setprop <name> <value>
-   Set system property <name> to <value>. Properties are expanded
-   within <value>.
-
-setrlimit <resource> <cur> <max>
-   Set the rlimit for a resource.
-
-start <service>
-   Start a service running if it is not already running.
-
-stop <service>
-   Stop a service from running if it is currently running.
-
-swapon_all <fstab>
-   Calls fs_mgr_swapon_all on the given fstab file.
-
-symlink <target> <path>
-   Create a symbolic link at <path> with the value <target>
-
-sysclktz <mins_west_of_gmt>
-   Set the system clock base (0 if system clock ticks in GMT)
-
-trigger <event>
-   Trigger an event.  Used to queue an action from another
-   action.
-
-umount <path>
-   Unmount the filesystem mounted at that path.
-
-verity_load_state
-   Internal implementation detail used to load dm-verity state.
-
-verity_update_state <mount_point>
-   Internal implementation detail used to update dm-verity state and
-   set the partition.<mount_point>.verified properties used by adb remount
-   because fs_mgr can't set them directly itself.
-
-wait <path> [ <timeout> ]
-   Poll for the existence of the given file and return when found,
-   or the timeout has been reached. If timeout is not specified it
-   currently defaults to five seconds.
-
-write <path> <content>
-   Open the file at <path> and write a string to it with write(2).
-   If the file does not exist, it will be created. If it does exist,
-   it will be truncated. Properties are expanded within <content>.
-
-
-Imports
--------
-The import keyword is not a command, but rather its own section and is
-handled immediately after the .rc file that contains it has finished
-being parsed.  It takes the below form:
-
-import <path>
-   Parse an init config file, extending the current configuration.
-   If <path> is a directory, each file in the directory is parsed as
-   a config file. It is not recursive, nested directories will
-   not be parsed.
-
-There are only two times where the init executable imports .rc files,
-   1) When it imports /init.rc during initial boot
-   2) When it imports /{system,vendor,odm}/etc/init/ or .rc files at specified
-      paths during mount_all
-
-
-Properties
-----------
-Init provides information about the services that it is responsible
-for via the below properties.
-
-init.svc.<name>
-  State of a named service ("stopped", "stopping", "running", "restarting")
-
-
-Boot timing
------------
-Init records some boot timing information in system properties.
-
-ro.boottime.init
-  Time after boot in ns (via the CLOCK_BOOTTIME clock) at which the first
-  stage of init started.
-
-ro.boottime.init.selinux
-  How long it took the first stage to initialize SELinux.
-
-ro.boottime.init.cold_boot_wait
-  How long init waited for ueventd's coldboot phase to end.
-
-ro.boottime.<service-name>
-  Time after boot in ns (via the CLOCK_BOOTTIME clock) that the service was
-  first started.
-
-
-Bootcharting
-------------
-This version of init contains code to perform "bootcharting": generating log
-files that can be later processed by the tools provided by www.bootchart.org.
-
-On the emulator, use the -bootchart <timeout> option to boot with bootcharting
-activated for <timeout> seconds.
-
-On a device:
-
-  adb shell 'touch /data/bootchart/enabled'
-
-Don't forget to delete this file when you're done collecting data!
-
-The log files are written to /data/bootchart/. A script is provided to
-retrieve them and create a bootchart.tgz file that can be used with the
-bootchart command-line utility:
-
-  sudo apt-get install pybootchartgui
-  # grab-bootchart.sh uses $ANDROID_SERIAL.
-  $ANDROID_BUILD_TOP/system/core/init/grab-bootchart.sh
-
-One thing to watch for is that the bootchart will show init as if it started
-running at 0s. You'll have to look at dmesg to work out when the kernel
-actually started init.
-
-
-Comparing two bootcharts
-------------------------
-A handy script named compare-bootcharts.py can be used to compare the
-start/end time of selected processes. The aforementioned grab-bootchart.sh
-will leave a bootchart tarball named bootchart.tgz at /tmp/android-bootchart.
-If two such barballs are preserved on the host machine under different
-directories, the script can list the timestamps differences. For example:
-
-Usage: system/core/init/compare-bootcharts.py base_bootchart_dir
-       exp_bootchart_dir
-
-process: baseline experiment (delta)
- - Unit is ms (a jiffy is 10 ms on the system)
-------------------------------------
-/init: 50 40 (-10)
-/system/bin/surfaceflinger: 4320 4470 (+150)
-/system/bin/bootanimation: 6980 6990 (+10)
-zygote64: 10410 10640 (+230)
-zygote: 10410 10640 (+230)
-system_server: 15350 15150 (-200)
-bootanimation ends at: 33790 31230 (-2560)
-
-
-Systrace
---------
-Systrace [1] can be used for obtaining performance analysis reports during boot
-time on userdebug or eng builds.
-Here is an example of trace events of "wm" and "am" categories:
-
-  $ANDROID_BUILD_TOP/external/chromium-trace/systrace.py wm am --boot
-
-This command will cause the device to reboot. After the device is rebooted and
-the boot sequence has finished, the trace report is obtained from the device
-and written as trace.html on the host by hitting Ctrl+C.
-
-LIMITATION
-Recording trace events is started after persistent properties are loaded, so
-the trace events that are emitted before that are not recorded. Several
-services such as vold, surfaceflinger, and servicemanager are affected by this
-limitation since they are started before persistent properties are loaded.
-Zygote initialization and the processes that are forked from the zygote are not
-affected.
-
-[1] http://developer.android.com/tools/help/systrace.html
-
-
-Debugging init
---------------
-By default, programs executed by init will drop stdout and stderr into
-/dev/null. To help with debugging, you can execute your program via the
-Android program logwrapper. This will redirect stdout/stderr into the
-Android logging system (accessed via logcat).
-
-For example
-service akmd /system/bin/logwrapper /sbin/akmd
-
-For quicker turnaround when working on init itself, use:
-
-  mm -j &&
-  m ramdisk-nodeps &&
-  m bootimage-nodeps &&
-  adb reboot bootloader &&
-  fastboot boot $ANDROID_PRODUCT_OUT/boot.img
-
-Alternatively, use the emulator:
-
-  emulator -partition-size 1024 -verbose -show-kernel -no-window