KeyStore: add "migrate" command

To support the WiFi service, we need to support migration from the
system UID to the wifi UID. This adds a command to achieve the
migration.

Bug: 8122243
Change-Id: I65f7a91504c1d2a2aac22b9c3051adffd28d66c1

1 files changed, 22 insertions, 0 deletions

diff --git a/core/java/android/security/IKeystoreService.java b/core/java/android/security/IKeystoreService.java
index af4cdfa..2ae3c64 100644
--- a/core/java/android/security/IKeystoreService.java
+++ b/core/java/android/security/IKeystoreService.java
@@ -405,6 +405,25 @@ public interface IKeystoreService extends IInterface {
                 }
                 return _result;
             }
+
+            @Override
+            public int migrate(String name, int targetUid) throws RemoteException {
+                Parcel _data = Parcel.obtain();
+                Parcel _reply = Parcel.obtain();
+                int _result;
+                try {
+                    _data.writeInterfaceToken(DESCRIPTOR);
+                    _data.writeString(name);
+                    _data.writeInt(targetUid);
+                    mRemote.transact(Stub.TRANSACTION_migrate, _data, _reply, 0);
+                    _reply.readException();
+                    _result = _reply.readInt();
+                } finally {
+                    _reply.recycle();
+                    _data.recycle();
+                }
+                return _result;
+            }
         }
 
         private static final String DESCRIPTOR = "android.security.keystore";
@@ -429,6 +448,7 @@ public interface IKeystoreService extends IInterface {
         static final int TRANSACTION_grant = IBinder.FIRST_CALL_TRANSACTION + 17;
         static final int TRANSACTION_ungrant = IBinder.FIRST_CALL_TRANSACTION + 18;
         static final int TRANSACTION_getmtime = IBinder.FIRST_CALL_TRANSACTION + 19;
+        static final int TRANSACTION_migrate = IBinder.FIRST_CALL_TRANSACTION + 20;
 
         /**
          * Cast an IBinder object into an IKeystoreService interface, generating
@@ -513,4 +533,6 @@ public interface IKeystoreService extends IInterface {
     public int ungrant(String name, int granteeUid) throws RemoteException;
 
     public long getmtime(String name) throws RemoteException;
+
+    public int migrate(String name, int targetUid) throws RemoteException;
 }