Add the new verifypw command to vold/cryptfs

This vold command returns 0 if the given password matches the password
used to decrypt the device on boot.  It returns 1 if they don't match,
and it returns -1 on an internal error, and -2 if the device is not encrypted.

Also check the uid of the sender of the command and only allow the root and
system users to issue cryptfs commands.

Change-Id: I5e5ae3b72a2d7814ae68c2d49aa9deb90fb1dac5

1 files changed, 1 insertions, 0 deletions

diff --git a/ResponseCode.h b/ResponseCode.h
index a858b99..402e35b 100644
--- a/ResponseCode.h
+++ b/ResponseCode.h
@@ -48,6 +48,7 @@ public:
     // action did not take place.
     static const int CommandSyntaxError = 500;
     static const int CommandParameterError = 501;
+    static const int CommandNoPermission = 502;
 
     // 600 series - Unsolicited broadcasts
     static const int UnsolicitedInformational       = 600;