Merge "Add StorageManager checkpoint APIs." (b8d24442) · Commits · e / os / android_frameworks_base

core/java/android/os/storage/IStorageManager.aidl

+2 −0

Original line number	Original line	Diff line number	Diff line
	@@ -191,4 +191,6 @@ interface IStorageManager {
	String translateAppToSystem(String path, int pid, int uid) = 81;		String translateAppToSystem(String path, int pid, int uid) = 81;
	String translateSystemToApp(String path, int pid, int uid) = 82;		String translateSystemToApp(String path, int pid, int uid) = 82;
	void commitChanges() = 83;		void commitChanges() = 83;
			boolean supportsCheckpoint() = 84;
			void startCheckpoint(int numTries) = 85;
	}		}

+32 −0

Original line number	Original line	Diff line number	Diff line
	@@ -2716,6 +2716,38 @@ class StorageManagerService extends IStorageManager.Stub
	}		}
	}		}

			/**
			* Check whether the device supports filesystem checkpointing.
			*
			* @return true if the device supports filesystem checkpointing, false otherwise.
			*/
			@Override
			public boolean supportsCheckpoint() throws RemoteException {
			// Only the system process is permitted to start checkpoints
			if (Binder.getCallingUid() != android.os.Process.SYSTEM_UID) {
			throw new SecurityException("no permission to check filesystem checkpoint support");
			}

			return mVold.supportsCheckpoint();
			}

			/**
			* Signal that checkpointing partitions should start a checkpoint on the next boot.
			*
			* @param numTries Number of times to try booting in checkpoint mode, before we will boot
			* non-checkpoint mode and commit all changes immediately. Callers are
			* responsible for ensuring that boot is safe (eg, by rolling back updates).
			*/
			@Override
			public void startCheckpoint(int numTries) throws RemoteException {
			// Only the system process is permitted to start checkpoints
			if (Binder.getCallingUid() != android.os.Process.SYSTEM_UID) {
			throw new SecurityException("no permission to start filesystem checkpoint");
			}

			mVold.startCheckpoint(numTries);
			}

	/**		/**
	* Signal that checkpointing partitions should commit changes		* Signal that checkpointing partitions should commit changes
	*/		*/