Add a method enable encryption. (d6332552) · Commits · e / os / android_frameworks_base

core/java/android/os/storage/IMountService.java

+32 −0

Original line number	Diff line number	Diff line
		@@ -603,6 +603,23 @@ public interface IMountService extends IInterface {
		}
		return _result;
		}

		public int encryptStorage(String password) throws RemoteException {
		Parcel _data = Parcel.obtain();
		Parcel _reply = Parcel.obtain();
		int _result;
		try {
		_data.writeInterfaceToken(DESCRIPTOR);
		_data.writeString(password);
		mRemote.transact(Stub.TRANSACTION_encryptStorage, _data, _reply, 0);
		_reply.readException();
		_result = _reply.readInt();
		} finally {
		_reply.recycle();
		_data.recycle();
		}
		return _result;
		}
		}

		private static final String DESCRIPTOR = "IMountService";
		@@ -661,6 +678,8 @@ public interface IMountService extends IInterface {

		static final int TRANSACTION_decryptStorage = IBinder.FIRST_CALL_TRANSACTION + 26;

		static final int TRANSACTION_encryptStorage = IBinder.FIRST_CALL_TRANSACTION + 27;

		/**
		* Cast an IBinder object into an IMountService interface, generating a
		* proxy if needed.
		@@ -950,6 +969,14 @@ public interface IMountService extends IInterface {
		reply.writeInt(result);
		return true;
		}
		case TRANSACTION_encryptStorage: {
		data.enforceInterface(DESCRIPTOR);
		String password = data.readString();
		int result = encryptStorage(password);
		reply.writeNoException();
		reply.writeInt(result);
		return true;
		}
		}
		return super.onTransact(code, data, reply, flags);
		}
		@@ -1114,4 +1141,9 @@ public interface IMountService extends IInterface {
		* Decrypts any encrypted volumes.
		*/
		public int decryptStorage(String password) throws RemoteException;

		/**
		* Encrypts storage.
		*/
		public int encryptStorage(String password) throws RemoteException;
		}

include/storage/IMountService.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -67,6 +67,7 @@ public:
		virtual bool isObbMounted(const String16& filename) = 0;
		virtual bool getMountedObbPath(const String16& filename, String16& path) = 0;
		virtual int32_t decryptStorage(const String16& password) = 0;
		virtual int32_t encryptStorage(const String16& password) = 0;
		};

		// ----------------------------------------------------------------------------

libs/storage/IMountService.cpp

+19 −1

Original line number	Diff line number	Diff line
		@@ -49,6 +49,7 @@ enum {
		TRANSACTION_getMountedObbPath,
		TRANSACTION_isExternalStorageEmulated,
		TRANSACTION_decryptStorage,
		TRANSACTION_encryptStorage,
		};

		class BpMountService: public BpInterface<IMountService>
		@@ -522,6 +523,23 @@ public:
		}
		return reply.readInt32();
		}

		int32_t encryptStorage(const String16& password)
		{
		Parcel data, reply;
		data.writeInterfaceToken(IMountService::getInterfaceDescriptor());
		data.writeString16(password);
		if (remote()->transact(TRANSACTION_encryptStorage, data, &reply) != NO_ERROR) {
		LOGD("encryptStorage could not contact remote\n");
		return -1;
		}
		int32_t err = reply.readExceptionCode();
		if (err < 0) {
		LOGD("encryptStorage caught exception %d\n", err);
		return err;
		}
		return reply.readInt32();
		}
		};

		IMPLEMENT_META_INTERFACE(MountService, "IMountService");

services/java/com/android/server/MountService.java

+23 −0

Original line number	Diff line number	Diff line
		@@ -1653,6 +1653,29 @@ class MountService extends IMountService.Stub implements INativeDaemonConnectorC
		return 0;
		}

		public int encryptStorage(String password) {
		if (password == null) {
		throw new IllegalArgumentException("password cannot be null");
		}

		// TODO: Enforce a permission

		waitForReady();

		if (DEBUG_EVENTS) {
		Slog.i(TAG, "decrypting storage...");
		}

		try {
		mConnector.doCommand(String.format("cryptfs enablecrypto wipe %s", password));
		} catch (NativeDaemonConnectorException e) {
		// Encryption failed
		return e.getCode();
		}

		return 0;
		}

		private void addObbStateLocked(ObbState obbState) throws RemoteException {
		final IBinder binder = obbState.getBinder();
		List<ObbState> obbStates = mObbMounts.get(binder);