Merge "Cache service component name in RoleControllerManager to avoid deadlock." into qt-dev (a01c0bfe) · Commits · e / os / android_frameworks_base

core/java/android/app/role/RoleControllerManager.java

+38 −8

Original line number	Diff line number	Diff line
		@@ -52,7 +52,10 @@ public class RoleControllerManager {

		private static final String LOG_TAG = RoleControllerManager.class.getSimpleName();

		private static volatile ComponentName sRemoteServiceComponentName;

		private static final Object sRemoteServicesLock = new Object();

		/**
		* Global remote services (per user) used by all {@link RoleControllerManager managers}.
		*/
		@@ -62,18 +65,36 @@ public class RoleControllerManager {
		@NonNull
		private final RemoteService mRemoteService;

		public RoleControllerManager(@NonNull Context context, @NonNull Handler handler) {
		/**
		* Initialize the remote service component name once so that we can avoid acquiring the
		* PackageManagerService lock in constructor.
		*
		* @see #createWithInitializedRemoteServiceComponentName(Handler, Context)
		*/
		public static void initializeRemoteServiceComponentName(@NonNull Context context) {
		sRemoteServiceComponentName = getRemoteServiceComponentName(context);
		}

		/**
		* Create a {@link RoleControllerManager} instance with the initialized remote service component
		* name so that we can avoid acquiring the PackageManagerService lock in constructor.
		*
		* @see #initializeRemoteServiceComponentName(Context)
		*/
		@NonNull
		public static RoleControllerManager createWithInitializedRemoteServiceComponentName(
		@NonNull Handler handler, @NonNull Context context) {
		return new RoleControllerManager(sRemoteServiceComponentName, handler, context);
		}

		private RoleControllerManager(@NonNull ComponentName remoteServiceComponentName,
		@NonNull Handler handler, @NonNull Context context) {
		synchronized (sRemoteServicesLock) {
		int userId = context.getUserId();
		RemoteService remoteService = sRemoteServices.get(userId);
		if (remoteService == null) {
		Intent intent = new Intent(RoleControllerService.SERVICE_INTERFACE);
		PackageManager packageManager = context.getPackageManager();
		intent.setPackage(packageManager.getPermissionControllerPackageName());
		ResolveInfo resolveInfo = packageManager.resolveService(intent, 0);

		remoteService = new RemoteService(context.getApplicationContext(),
		resolveInfo.getComponentInfo().getComponentName(), handler, userId);
		remoteServiceComponentName, handler, userId);
		sRemoteServices.put(userId, remoteService);
		}
		mRemoteService = remoteService;
		@@ -81,7 +102,16 @@ public class RoleControllerManager {
		}

		public RoleControllerManager(@NonNull Context context) {
		this(context, context.getMainThreadHandler());
		this(getRemoteServiceComponentName(context), context.getMainThreadHandler(), context);
		}

		@NonNull
		private static ComponentName getRemoteServiceComponentName(@NonNull Context context) {
		Intent intent = new Intent(RoleControllerService.SERVICE_INTERFACE);
		PackageManager packageManager = context.getPackageManager();
		intent.setPackage(packageManager.getPermissionControllerPackageName());
		ResolveInfo resolveInfo = packageManager.resolveService(intent, 0);
		return resolveInfo.getComponentInfo().getComponentName();
		}

		/**

services/core/java/com/android/server/role/RoleManagerService.java

+15 −12

Original line number	Diff line number	Diff line
		@@ -147,6 +147,8 @@ public class RoleManagerService extends SystemService implements RoleUserState.C

		mLegacyRoleResolver = legacyRoleResolver;

		RoleControllerManager.initializeRemoteServiceComponentName(context);

		mUserManagerInternal = LocalServices.getService(UserManagerInternal.class);
		mAppOpsManager = context.getSystemService(AppOpsManager.class);

		@@ -231,7 +233,7 @@ public class RoleManagerService extends SystemService implements RoleUserState.C
		// Run grants again
		Slog.i(LOG_TAG, "Granting default permissions...");
		CompletableFuture<Void> result = new CompletableFuture<>();
		getOrCreateControllerService(userId).grantDefaultRoles(FgThread.getExecutor(),
		getOrCreateController(userId).grantDefaultRoles(FgThread.getExecutor(),
		successful -> {
		if (successful) {
		userState.setPackagesHash(packagesHash);
		@@ -318,7 +320,7 @@ public class RoleManagerService extends SystemService implements RoleUserState.C
		}

		@NonNull
		private RoleControllerManager getOrCreateControllerService(@UserIdInt int userId) {
		private RoleControllerManager getOrCreateController(@UserIdInt int userId) {
		synchronized (mLock) {
		RoleControllerManager controller = mControllers.get(userId);
		if (controller == null) {
		@@ -330,7 +332,8 @@ public class RoleManagerService extends SystemService implements RoleUserState.C
		} catch (NameNotFoundException e) {
		throw new RuntimeException(e);
		}
		controller = new RoleControllerManager(context, FgThread.getHandler());
		controller = RoleControllerManager.createWithInitializedRemoteServiceComponentName(
		FgThread.getHandler(), context);
		mControllers.put(userId, controller);
		}
		return controller;
		@@ -474,7 +477,7 @@ public class RoleManagerService extends SystemService implements RoleUserState.C
		Preconditions.checkStringNotEmpty(packageName, "packageName cannot be null or empty");
		Preconditions.checkNotNull(callback, "callback cannot be null");

		getOrCreateControllerService(userId).onAddRoleHolder(roleName, packageName, flags,
		getOrCreateController(userId).onAddRoleHolder(roleName, packageName, flags,
		callback);
		}

		@@ -494,7 +497,7 @@ public class RoleManagerService extends SystemService implements RoleUserState.C
		Preconditions.checkStringNotEmpty(packageName, "packageName cannot be null or empty");
		Preconditions.checkNotNull(callback, "callback cannot be null");

		getOrCreateControllerService(userId).onRemoveRoleHolder(roleName, packageName, flags,
		getOrCreateController(userId).onRemoveRoleHolder(roleName, packageName, flags,
		callback);
		}

		@@ -513,7 +516,7 @@ public class RoleManagerService extends SystemService implements RoleUserState.C
		Preconditions.checkStringNotEmpty(roleName, "roleName cannot be null or empty");
		Preconditions.checkNotNull(callback, "callback cannot be null");

		getOrCreateControllerService(userId).onClearRoleHolders(roleName, flags, callback);
		getOrCreateController(userId).onClearRoleHolders(roleName, flags, callback);
		}

		@Override
		@@ -738,10 +741,10 @@ public class RoleManagerService extends SystemService implements RoleUserState.C
		}
		});
		if (packageName != null) {
		getOrCreateControllerService(userId).onAddRoleHolder(RoleManager.ROLE_BROWSER,
		getOrCreateController(userId).onAddRoleHolder(RoleManager.ROLE_BROWSER,
		packageName, 0, callback);
		} else {
		getOrCreateControllerService(userId).onClearRoleHolders(RoleManager.ROLE_BROWSER, 0,
		getOrCreateController(userId).onClearRoleHolders(RoleManager.ROLE_BROWSER, 0,
		callback);
		}
		try {
		@@ -762,10 +765,10 @@ public class RoleManagerService extends SystemService implements RoleUserState.C
		}
		});
		if (packageName != null) {
		getOrCreateControllerService(userId).onAddRoleHolder(RoleManager.ROLE_BROWSER,
		getOrCreateController(userId).onAddRoleHolder(RoleManager.ROLE_BROWSER,
		packageName, 0, callback);
		} else {
		getOrCreateControllerService(userId).onClearRoleHolders(RoleManager.ROLE_BROWSER, 0,
		getOrCreateController(userId).onClearRoleHolders(RoleManager.ROLE_BROWSER, 0,
		callback);
		}
		}
		@@ -791,10 +794,10 @@ public class RoleManagerService extends SystemService implements RoleUserState.C
		callback.accept(successful);
		});
		if (packageName != null) {
		getOrCreateControllerService(userId).onAddRoleHolder(RoleManager.ROLE_HOME,
		getOrCreateController(userId).onAddRoleHolder(RoleManager.ROLE_HOME,
		packageName, 0, remoteCallback);
		} else {
		getOrCreateControllerService(userId).onClearRoleHolders(RoleManager.ROLE_HOME, 0,
		getOrCreateController(userId).onClearRoleHolders(RoleManager.ROLE_HOME, 0,
		remoteCallback);
		}
		}