support "sideload over ADB" mode

Rather than depending on the existence of some place to store a file
that is accessible to users on an an unbootable device (eg, a physical
sdcard, external USB drive, etc.), add support for sideloading
packages sent to the device with adb.

This change adds a "minimal adbd" which supports nothing but receiving
a package over adb (with the "adb sideload" command) and storing it to
a fixed filename in the /tmp ramdisk, from where it can be verified
and sideloaded in the usual way.  This should be leave available even
on locked user-build devices.

The user can select "apply package from ADB" from the recovery menu,
which starts minimal-adb mode (shutting down any real adbd that may be
running).  Once minimal-adb has received a package it exits
(restarting real adbd if appropriate) and then verification and
installation of the received package proceeds.

Change-Id: I6fe13161ca064a98d06fa32104e1f432826582f5

1 files changed, 1 insertions, 1 deletions

diff --git a/device.h b/device.h
index 8096a8d..583de75 100644
--- a/device.h
+++ b/device.h
@@ -66,7 +66,7 @@ class Device {
     virtual int HandleMenuKey(int key, int visible) = 0;
 
     enum BuiltinAction { NO_ACTION, REBOOT, APPLY_EXT, APPLY_CACHE,
-                         WIPE_DATA, WIPE_CACHE };
+                         APPLY_ADB_SIDELOAD, WIPE_DATA, WIPE_CACHE };
 
     // Perform a recovery action selected from the menu.
     // 'menu_position' will be the item number of the selected menu