Merge "Make CompatConfig be package private." (eec638da) · Commits · e / os / android_frameworks_base

core/java/com/android/internal/compat/IPlatformCompat.aidl

+23 −2

Original line number	Diff line number	Diff line
		@@ -133,7 +133,7 @@ interface IPlatformCompat
		boolean isChangeEnabledByUid(long changeId, int uid);

		/**
		* Add overrides to compatibility changes.
		* Add overrides to compatibility changes. Kills the app to allow the changes to take effect.
		*
		* @param overrides Parcelable containing the compat change overrides to be applied.
		* @param packageName The package name of the app whose changes will be overridden.
		@@ -142,7 +142,28 @@ interface IPlatformCompat
		void setOverrides(in CompatibilityChangeConfig overrides, in String packageName);

		/**
		* Revert overrides to compatibility changes.
		* Add overrides to compatibility changes. Doesn't kill the app, to be only used in tests.
		*
		* @param overrides Parcelable containing the compat change overrides to be applied.
		* @param packageName The package name of the app whose changes will be overridden.
		*
		*/
		void setOverridesForTest(in CompatibilityChangeConfig overrides, in String packageName);

		/**
		* Removes an override previously added via {@link #setOverrides(CompatibilityChangeConfig,
		* String)}. This restores the default behaviour for the given change and app, once any app
		* processes have been restarted.
		* Kills the app to allow the changes to take effect.
		*
		* @param changeId The ID of the change that was overridden.
		* @param packageName The app package name that was overridden.
		* @return {@code true} if an override existed;
		*/
		boolean clearOverride(long changeId, String packageName);

		/**
		* Revert overrides to compatibility changes. Kills the app to allow the changes to take effect.
		*
		* @param packageName The package name of the app whose overrides will be cleared.
		*

services/core/java/com/android/server/am/ActivityManagerService.java

+2 −2

Original line number	Diff line number	Diff line
		@@ -349,7 +349,6 @@ import com.android.server.ThreadPriorityBooster;
		import com.android.server.Watchdog;
		import com.android.server.am.ActivityManagerServiceDumpProcessesProto.UidObserverRegistrationProto;
		import com.android.server.appop.AppOpsService;
		import com.android.server.compat.CompatConfig;
		import com.android.server.compat.PlatformCompat;
		import com.android.server.contentcapture.ContentCaptureManagerInternal;
		import com.android.server.firewall.IntentFirewall;
		@@ -5049,8 +5048,9 @@ public class ActivityManagerService extends IActivityManager.Stub
		bindApplicationTimeMillis = SystemClock.elapsedRealtime();
		mAtmInternal.preBindApplication(app.getWindowProcessController());
		final ActiveInstrumentation instr2 = app.getActiveInstrumentation();
		long[] disabledCompatChanges = CompatConfig.get().getDisabledChanges(app.info);
		long[] disabledCompatChanges = {};
		if (mPlatformCompat != null) {
		disabledCompatChanges = mPlatformCompat.getDisabledChanges(app.info);
		mPlatformCompat.resetReporting(app.info);
		}
		if (app.isolatedEntryPoint != null) {

services/core/java/com/android/server/am/ActivityManagerShellCommand.java

+25 −29

Original line number	Diff line number	Diff line
		@@ -41,6 +41,7 @@ import android.app.usage.AppStandbyInfo;
		import android.app.usage.ConfigurationStats;
		import android.app.usage.IUsageStatsManager;
		import android.app.usage.UsageStatsManager;
		import android.compat.Compatibility;
		import android.content.ComponentCallbacks2;
		import android.content.ComponentName;
		import android.content.Context;
		@@ -80,15 +81,17 @@ import android.os.UserManager;
		import android.text.TextUtils;
		import android.text.format.Time;
		import android.util.ArrayMap;
		import android.util.ArraySet;
		import android.util.DebugUtils;
		import android.util.DisplayMetrics;
		import android.util.proto.ProtoOutputStream;
		import android.view.Display;

		import com.android.internal.compat.CompatibilityChangeConfig;
		import com.android.internal.util.HexDump;
		import com.android.internal.util.MemInfoReader;
		import com.android.internal.util.Preconditions;
		import com.android.server.compat.CompatConfig;
		import com.android.server.compat.PlatformCompat;

		import java.io.BufferedReader;
		import java.io.File;
		@@ -2868,56 +2871,49 @@ final class ActivityManagerShellCommand extends ShellCommand {
		return 0;
		}

		private void killPackage(String packageName, PrintWriter pw) throws RemoteException {
		int uid = mPm.getPackageUid(packageName, 0, mUserId);
		if (uid < 0) {
		// uid is negative if the package wasn't found.
		pw.println("Didn't find package " + packageName + " on device.");
		} else {
		pw.println("Killing package " + packageName + " (UID " + uid + ").");
		final long origId = Binder.clearCallingIdentity();
		mInterface.killUid(UserHandle.getAppId(uid),
		UserHandle.USER_ALL, "killPackage");
		Binder.restoreCallingIdentity(origId);
		}
		}

		private int runCompat(PrintWriter pw) throws RemoteException {
		final CompatConfig config = CompatConfig.get();
		final PlatformCompat platformCompat = (PlatformCompat)
		ServiceManager.getService(Context.PLATFORM_COMPAT_SERVICE);
		String toggleValue = getNextArgRequired();
		long changeId;
		String changeIdString = getNextArgRequired();
		try {
		changeId = Long.parseLong(changeIdString);
		} catch (NumberFormatException e) {
		changeId = config.lookupChangeId(changeIdString);
		changeId = platformCompat.lookupChangeId(changeIdString);
		}
		if (changeId == -1) {
		pw.println("Unknown or invalid change: '" + changeIdString + "'.");
		return -1;
		}
		String packageName = getNextArgRequired();
		switch (toggleValue) {
		case "enable":
		if (!config.addOverride(changeId, packageName, true)) {
		pw.println("Warning! Change " + changeId + " is not known yet. Enabling it"
		if (!platformCompat.isKnownChangeId(changeId)) {
		pw.println("Warning! Change " + changeId + " is not known yet. Enabling/disabling it"
		+ " could have no effect.");
		}
		ArraySet<Long> enabled = new ArraySet<>();
		ArraySet<Long> disabled = new ArraySet<>();
		switch (toggleValue) {
		case "enable":
		enabled.add(changeId);
		pw.println("Enabled change " + changeId + " for " + packageName + ".");
		killPackage(packageName, pw);
		CompatibilityChangeConfig overrides =
		new CompatibilityChangeConfig(
		new Compatibility.ChangeConfig(enabled, disabled));
		platformCompat.setOverrides(overrides, packageName);
		return 0;
		case "disable":
		if (!config.addOverride(changeId, packageName, false)) {
		pw.println("Warning! Change " + changeId + " is not known yet. Disabling it"
		+ " could have no effect.");
		}
		disabled.add(changeId);
		pw.println("Disabled change " + changeId + " for " + packageName + ".");
		killPackage(packageName, pw);
		overrides =
		new CompatibilityChangeConfig(
		new Compatibility.ChangeConfig(enabled, disabled));
		platformCompat.setOverrides(overrides, packageName);
		return 0;
		case "reset":
		if (config.removeOverride(changeId, packageName)) {
		if (platformCompat.clearOverride(changeId, packageName)) {
		pw.println("Reset change " + changeId + " for " + packageName
		+ " to default value.");
		killPackage(packageName, pw);
		} else {
		pw.println("No override exists for changeId " + changeId + ".");
		}

services/core/java/com/android/server/compat/CompatConfig.java

+49 −35

Original line number	Diff line number	Diff line
		@@ -43,13 +43,14 @@ import java.util.HashSet;
		import java.util.Set;

		import javax.xml.datatype.DatatypeConfigurationException;

		/**
		* This class maintains state relating to platform compatibility changes.
		*
		* <p>It stores the default configuration for each change, and any per-package overrides that have
		* been configured.
		*/
		public final class CompatConfig {
		final class CompatConfig {

		private static final String TAG = "CompatConfig";

		@@ -61,13 +62,13 @@ public final class CompatConfig {
		private final LongSparseArray<CompatChange> mChanges = new LongSparseArray<>();

		@VisibleForTesting
		public CompatConfig() {
		CompatConfig() {
		}

		/**
		* @return The static instance of this class to be used within the system server.
		*/
		public static CompatConfig get() {
		static CompatConfig get() {
		return sInstance;
		}

		@@ -77,7 +78,7 @@ public final class CompatConfig {
		*
		* @param change The change to add. Any change with the same ID will be overwritten.
		*/
		public void addChange(CompatChange change) {
		void addChange(CompatChange change) {
		synchronized (mChanges) {
		mChanges.put(change.getId(), change);
		}
		@@ -92,7 +93,7 @@ public final class CompatConfig {
		* footprint: Every app process will store this array statically so we aim to reduce
		* overhead as much as possible.
		*/
		public long[] getDisabledChanges(ApplicationInfo app) {
		long[] getDisabledChanges(ApplicationInfo app) {
		LongArray disabled = new LongArray();
		synchronized (mChanges) {
		for (int i = 0; i < mChanges.size(); ++i) {
		@@ -113,7 +114,7 @@ public final class CompatConfig {
		* @param name Name of the change to look up
		* @return The change ID, or {@code -1} if no change with that name exists.
		*/
		public long lookupChangeId(String name) {
		long lookupChangeId(String name) {
		synchronized (mChanges) {
		for (int i = 0; i < mChanges.size(); ++i) {
		if (TextUtils.equals(mChanges.valueAt(i).getName(), name)) {
		@@ -132,7 +133,7 @@ public final class CompatConfig {
		* @return {@code true} if the change is enabled for this app. Also returns {@code true} if the
		* change ID is not known, as unknown changes are enabled by default.
		*/
		public boolean isChangeEnabled(long changeId, ApplicationInfo app) {
		boolean isChangeEnabled(long changeId, ApplicationInfo app) {
		synchronized (mChanges) {
		CompatChange c = mChanges.get(changeId);
		if (c == null) {
		@@ -150,14 +151,15 @@ public final class CompatConfig {
		*
		* <p>Note, package overrides are not persistent and will be lost on system or runtime restart.
		*
		* @param changeId The ID of the change to be overridden. Note, this call will succeed even if
		* @param changeId The ID of the change to be overridden. Note, this call will succeed even
		* if
		* this change is not known; it will only have any effect if any code in the
		* platform is gated on the ID given.
		* @param packageName The app package name to override the change for.
		* @param enabled If the change should be enabled or disabled.
		* @return {@code true} if the change existed before adding the override.
		*/
		public boolean addOverride(long changeId, String packageName, boolean enabled) {
		boolean addOverride(long changeId, String packageName, boolean enabled) {
		boolean alreadyKnown = true;
		synchronized (mChanges) {
		CompatChange c = mChanges.get(changeId);
		@@ -171,6 +173,18 @@ public final class CompatConfig {
		return alreadyKnown;
		}

		/**
		* Check whether the change is known to the compat config.
		*
		* @return {@code true} if the change is known.
		*/
		boolean isKnownChangeId(long changeId) {
		synchronized (mChanges) {
		CompatChange c = mChanges.get(changeId);
		return c != null;
		}
		}

		/**
		* Removes an override previously added via {@link #addOverride(long, String, boolean)}. This
		* restores the default behaviour for the given change and app, once any app processes have been
		@@ -180,7 +194,7 @@ public final class CompatConfig {
		* @param packageName The app package name that was overridden.
		* @return {@code true} if an override existed;
		*/
		public boolean removeOverride(long changeId, String packageName) {
		boolean removeOverride(long changeId, String packageName) {
		boolean overrideExists = false;
		synchronized (mChanges) {
		CompatChange c = mChanges.get(changeId);
		@@ -191,6 +205,7 @@ public final class CompatConfig {
		}
		return overrideExists;
		}

		/**
		* Overrides the enabled state for a given change and app. This method is intended to be used
		* only for debugging purposes.
		@@ -200,8 +215,7 @@ public final class CompatConfig {
		* @param overrides list of overrides to default changes config.
		* @param packageName app for which the overrides will be applied.
		*/
		public void addOverrides(
		CompatibilityChangeConfig overrides, String packageName) {
		void addOverrides(CompatibilityChangeConfig overrides, String packageName) {
		synchronized (mChanges) {
		for (Long changeId : overrides.enabledChanges()) {
		addOverride(changeId, packageName, true);
		@@ -221,7 +235,7 @@ public final class CompatConfig {
		*
		* @param packageName The package for which the overrides should be purged.
		*/
		public void removePackageOverrides(String packageName) {
		void removePackageOverrides(String packageName) {
		synchronized (mChanges) {
		for (int i = 0; i < mChanges.size(); ++i) {
		mChanges.valueAt(i).removePackageOverride(packageName);
		@@ -234,7 +248,7 @@ public final class CompatConfig {
		*
		* @param pw The {@link PrintWriter} instance to which the information will be dumped.
		*/
		public void dumpConfig(PrintWriter pw) {
		void dumpConfig(PrintWriter pw) {
		synchronized (mChanges) {
		if (mChanges.size() == 0) {
		pw.println("No compat overrides.");
		@@ -255,7 +269,7 @@ public final class CompatConfig {
		* given app.
		*/

		public CompatibilityChangeConfig getAppConfig(ApplicationInfo applicationInfo) {
		CompatibilityChangeConfig getAppConfig(ApplicationInfo applicationInfo) {
		Set<Long> enabled = new HashSet<>();
		Set<Long> disabled = new HashSet<>();
		synchronized (mChanges) {
		@@ -276,7 +290,7 @@ public final class CompatConfig {
		*
		* @return An array of {@link CompatibilityChangeInfo} with the current changes.
		*/
		public CompatibilityChangeInfo[] dumpChanges() {
		CompatibilityChangeInfo[] dumpChanges() {
		synchronized (mChanges) {
		CompatibilityChangeInfo[] changeInfos = new CompatibilityChangeInfo[mChanges.size()];
		for (int i = 0; i < mChanges.size(); ++i) {

services/core/java/com/android/server/compat/PlatformCompat.java

+81 −0

Original line number	Diff line number	Diff line
		@@ -16,9 +16,13 @@

		package com.android.server.compat;

		import android.app.ActivityManager;
		import android.app.IActivityManager;
		import android.content.Context;
		import android.content.pm.ApplicationInfo;
		import android.content.pm.PackageManager;
		import android.os.Binder;
		import android.os.RemoteException;
		import android.os.UserHandle;
		import android.util.Slog;
		import android.util.StatsLog;
		@@ -106,12 +110,26 @@ public class PlatformCompat extends IPlatformCompat.Stub {
		@Override
		public void setOverrides(CompatibilityChangeConfig overrides, String packageName) {
		CompatConfig.get().addOverrides(overrides, packageName);
		killPackage(packageName);
		}

		@Override
		public void setOverridesForTest(CompatibilityChangeConfig overrides, String packageName) {
		CompatConfig.get().addOverrides(overrides, packageName);
		}

		@Override
		public void clearOverrides(String packageName) {
		CompatConfig config = CompatConfig.get();
		config.removePackageOverrides(packageName);
		killPackage(packageName);
		}

		@Override
		public boolean clearOverride(long changeId, String packageName) {
		boolean existed = CompatConfig.get().removeOverride(changeId, packageName);
		killPackage(packageName);
		return existed;
		}

		@Override
		@@ -124,6 +142,39 @@ public class PlatformCompat extends IPlatformCompat.Stub {
		return CompatConfig.get().dumpChanges();
		}

		/**
		* Check whether the change is known to the compat config.
		* @param changeId
		* @return {@code true} if the change is known.
		*/
		public boolean isKnownChangeId(long changeId) {
		return CompatConfig.get().isKnownChangeId(changeId);

		}

		/**
		* Retrieves the set of disabled changes for a given app. Any change ID not in the returned
		* array is by default enabled for the app.
		*
		* @param appInfo The app in question
		* @return A sorted long array of change IDs. We use a primitive array to minimize memory
		* footprint: Every app process will store this array statically so we aim to reduce
		* overhead as much as possible.
		*/
		public long[] getDisabledChanges(ApplicationInfo appInfo) {
		return CompatConfig.get().getDisabledChanges(appInfo);
		}

		/**
		* Look up a change ID by name.
		*
		* @param name Name of the change to look up
		* @return The change ID, or {@code -1} if no change with that name exists.
		*/
		public long lookupChangeId(String name) {
		return CompatConfig.get().lookupChangeId(name);
		}

		@Override
		protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
		if (!DumpUtils.checkDumpAndUsageStatsPermission(mContext, "platform_compat", pw)) return;
		@@ -151,4 +202,34 @@ public class PlatformCompat extends IPlatformCompat.Stub {
		private void reportChange(long changeId, int uid, int state) {
		mChangeReporter.reportChange(uid, changeId, state);
		}

		private void killPackage(String packageName) {
		int uid = -1;
		try {
		uid = mContext.getPackageManager().getPackageUid(packageName, 0);
		} catch (PackageManager.NameNotFoundException e) {
		Slog.w(TAG, "Didn't find package " + packageName + " on device.", e);
		return;
		}

		Slog.d(TAG, "Killing package " + packageName + " (UID " + uid + ").");
		killUid(UserHandle.getAppId(uid),
		UserHandle.USER_ALL, "PlatformCompat overrides");
		}

		private void killUid(int appId, int userId, String reason) {
		final long identity = Binder.clearCallingIdentity();
		try {
		IActivityManager am = ActivityManager.getService();
		if (am != null) {
		try {
		am.killUid(appId, userId, reason);
		} catch (RemoteException e) {
		/* ignore - same process */
		}
		}
		} finally {
		Binder.restoreCallingIdentity(identity);
		}
		}
		}