Document the SELinux extensions to the Android init language.

   supplemental groups of the process (via setgroups()).

   Currently defaults to root.  (??? probably should default to nobody)

seclabel <securitycontext>

  Change to securitycontext 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.

   device by name.

   <mountoption>s include "ro", "rw", "remount", "noatime", ...

restorecon <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.

setcon <securitycontext>

   Set the current process security context to the specified string.

   This is typically only used from early-init to set the init context

   before any other process is started.

setenforce 0|1

   Set the SELinux system-wide enforcing status.

   0 is permissive (i.e. log but do not deny), 1 is enforcing.

setkey

   TBD

setrlimit <resource> <cur> <max>

   Set the rlimit for a resource.

setsebool <name>=<value>

   Set SELinux boolean <name> to <value>.

   <value> may be 1|true|on or 0|false|off

start <service>

   Start a service running if it is not already running.