tree f6de65c81ca137588032ddd9c86596d9bcaafeb7
parent 382691fbb08e4202ee8ee31f8f48c1aec42ec0e2
author Jiyong Park <jiyong@google.com> 1527821934 +0900
committer Jiyong Park <jiyong@google.com> 1528381473 +0900

Recovery image is self-contained

Now recovery mode is self-contained, which means we don't need to mount
system.img to run shell, etc. What is needed in recovery mode is all in
the recovery ramdisk image.

Since we no longer use /system as the mount point for the system.img,
this allows us to have identical filesystem layout as the system.img.
Executables and libs are installed to /system/bin and /system/lib.
Right now, we only have adbd, sh, toybox in /system/bin but will move
static executables from /sbin to /system/bin as soon as they are
converted to dynamic executables.

system.img is mounted to /mnt/system instead.

Bug: 63673171
Test: `adb reboot recovery; adb devices` shows the device ID
Test: `adb root && adb shell` and then
$ lsof -p `pidof adbd` shows that libm.so, libc.so, etc. are loaded from
the /lib directory.

Change-Id: I801ebd18f3e0a112db3d9a11e4fbb4e49181652a