| /* |
| * Copyright (C) 2016 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License |
| */ |
| |
| package com.android.server.pm.dex; |
| |
| import android.content.pm.ApplicationInfo; |
| import android.content.pm.IPackageManager; |
| import android.content.pm.PackageInfo; |
| import android.os.FileUtils; |
| import android.os.RemoteException; |
| import android.os.storage.StorageManager; |
| import android.os.UserHandle; |
| |
| import android.util.Slog; |
| |
| import com.android.internal.annotations.GuardedBy; |
| import com.android.server.pm.Installer; |
| import com.android.server.pm.Installer.InstallerException; |
| import com.android.server.pm.PackageDexOptimizer; |
| import com.android.server.pm.PackageManagerService; |
| import com.android.server.pm.PackageManagerServiceUtils; |
| import com.android.server.pm.PackageManagerServiceCompilerMapping; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.util.List; |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.Map; |
| import java.util.Set; |
| |
| import static com.android.server.pm.InstructionSets.getAppDexInstructionSets; |
| import static com.android.server.pm.dex.PackageDexUsage.PackageUseInfo; |
| import static com.android.server.pm.dex.PackageDexUsage.DexUseInfo; |
| |
| /** |
| * This class keeps track of how dex files are used. |
| * Every time it gets a notification about a dex file being loaded it tracks |
| * its owning package and records it in PackageDexUsage (package-dex-usage.list). |
| * |
| * TODO(calin): Extract related dexopt functionality from PackageManagerService |
| * into this class. |
| */ |
| public class DexManager { |
| private static final String TAG = "DexManager"; |
| |
| private static final boolean DEBUG = false; |
| |
| // Maps package name to code locations. |
| // It caches the code locations for the installed packages. This allows for |
| // faster lookups (no locks) when finding what package owns the dex file. |
| @GuardedBy("mPackageCodeLocationsCache") |
| private final Map<String, PackageCodeLocations> mPackageCodeLocationsCache; |
| |
| // PackageDexUsage handles the actual I/O operations. It is responsible to |
| // encode and save the dex usage data. |
| private final PackageDexUsage mPackageDexUsage; |
| |
| private final IPackageManager mPackageManager; |
| private final PackageDexOptimizer mPackageDexOptimizer; |
| private final Object mInstallLock; |
| @GuardedBy("mInstallLock") |
| private final Installer mInstaller; |
| |
| // Possible outcomes of a dex search. |
| private static int DEX_SEARCH_NOT_FOUND = 0; // dex file not found |
| private static int DEX_SEARCH_FOUND_PRIMARY = 1; // dex file is the primary/base apk |
| private static int DEX_SEARCH_FOUND_SPLIT = 2; // dex file is a split apk |
| private static int DEX_SEARCH_FOUND_SECONDARY = 3; // dex file is a secondary dex |
| |
| public DexManager(IPackageManager pms, PackageDexOptimizer pdo, |
| Installer installer, Object installLock) { |
| mPackageCodeLocationsCache = new HashMap<>(); |
| mPackageDexUsage = new PackageDexUsage(); |
| mPackageManager = pms; |
| mPackageDexOptimizer = pdo; |
| mInstaller = installer; |
| mInstallLock = installLock; |
| } |
| |
| /** |
| * Notify about dex files loads. |
| * Note that this method is invoked when apps load dex files and it should |
| * return as fast as possible. |
| * |
| * @param loadingAppInfo the package performing the load |
| * @param dexPaths the list of dex files being loaded |
| * @param loaderIsa the ISA of the app loading the dex files |
| * @param loaderUserId the user id which runs the code loading the dex files |
| */ |
| public void notifyDexLoad(ApplicationInfo loadingAppInfo, List<String> dexPaths, |
| String loaderIsa, int loaderUserId) { |
| try { |
| notifyDexLoadInternal(loadingAppInfo, dexPaths, loaderIsa, loaderUserId); |
| } catch (Exception e) { |
| Slog.w(TAG, "Exception while notifying dex load for package " + |
| loadingAppInfo.packageName, e); |
| } |
| } |
| |
| private void notifyDexLoadInternal(ApplicationInfo loadingAppInfo, List<String> dexPaths, |
| String loaderIsa, int loaderUserId) { |
| if (!PackageManagerServiceUtils.checkISA(loaderIsa)) { |
| Slog.w(TAG, "Loading dex files " + dexPaths + " in unsupported ISA: " + |
| loaderIsa + "?"); |
| return; |
| } |
| |
| for (String dexPath : dexPaths) { |
| // Find the owning package name. |
| DexSearchResult searchResult = getDexPackage(loadingAppInfo, dexPath, loaderUserId); |
| |
| if (DEBUG) { |
| Slog.i(TAG, loadingAppInfo.packageName |
| + " loads from " + searchResult + " : " + loaderUserId + " : " + dexPath); |
| } |
| |
| if (searchResult.mOutcome != DEX_SEARCH_NOT_FOUND) { |
| // TODO(calin): extend isUsedByOtherApps check to detect the cases where |
| // different apps share the same runtime. In that case we should not mark the dex |
| // file as isUsedByOtherApps. Currently this is a safe approximation. |
| boolean isUsedByOtherApps = !loadingAppInfo.packageName.equals( |
| searchResult.mOwningPackageName); |
| boolean primaryOrSplit = searchResult.mOutcome == DEX_SEARCH_FOUND_PRIMARY || |
| searchResult.mOutcome == DEX_SEARCH_FOUND_SPLIT; |
| |
| if (primaryOrSplit && !isUsedByOtherApps) { |
| // If the dex file is the primary apk (or a split) and not isUsedByOtherApps |
| // do not record it. This case does not bring any new usable information |
| // and can be safely skipped. |
| continue; |
| } |
| |
| // Record dex file usage. If the current usage is a new pattern (e.g. new secondary, |
| // or UsedBytOtherApps), record will return true and we trigger an async write |
| // to disk to make sure we don't loose the data in case of a reboot. |
| if (mPackageDexUsage.record(searchResult.mOwningPackageName, |
| dexPath, loaderUserId, loaderIsa, isUsedByOtherApps, primaryOrSplit)) { |
| mPackageDexUsage.maybeWriteAsync(); |
| } |
| } else { |
| // This can happen in a few situations: |
| // - bogus dex loads |
| // - recent installs/uninstalls that we didn't detect. |
| // - new installed splits |
| // If we can't find the owner of the dex we simply do not track it. The impact is |
| // that the dex file will not be considered for offline optimizations. |
| // TODO(calin): add hooks for move/uninstall notifications to |
| // capture package moves or obsolete packages. |
| if (DEBUG) { |
| Slog.i(TAG, "Could not find owning package for dex file: " + dexPath); |
| } |
| } |
| } |
| } |
| |
| /** |
| * Read the dex usage from disk and populate the code cache locations. |
| * @param existingPackages a map containing information about what packages |
| * are available to what users. Only packages in this list will be |
| * recognized during notifyDexLoad(). |
| */ |
| public void load(Map<Integer, List<PackageInfo>> existingPackages) { |
| try { |
| loadInternal(existingPackages); |
| } catch (Exception e) { |
| mPackageDexUsage.clear(); |
| Slog.w(TAG, "Exception while loading package dex usage. " + |
| "Starting with a fresh state.", e); |
| } |
| } |
| |
| /** |
| * Notifies that a new package was installed for {@code userId}. |
| * {@code userId} must not be {@code UserHandle.USER_ALL}. |
| * |
| * @throws IllegalArgumentException if {@code userId} is {@code UserHandle.USER_ALL}. |
| */ |
| public void notifyPackageInstalled(PackageInfo pi, int userId) { |
| if (userId == UserHandle.USER_ALL) { |
| throw new IllegalArgumentException( |
| "notifyPackageInstalled called with USER_ALL"); |
| } |
| cachePackageInfo(pi, userId); |
| } |
| |
| /** |
| * Notifies that package {@code packageName} was updated. |
| * This will clear the UsedByOtherApps mark if it exists. |
| */ |
| public void notifyPackageUpdated(String packageName, String baseCodePath, |
| String[] splitCodePaths) { |
| cachePackageCodeLocation(packageName, baseCodePath, splitCodePaths, null, /*userId*/ -1); |
| // In case there was an update, write the package use info to disk async. |
| // Note that we do the writing here and not in PackageDexUsage in order to be |
| // consistent with other methods in DexManager (e.g. reconcileSecondaryDexFiles performs |
| // multiple updates in PackageDexUsage before writing it). |
| if (mPackageDexUsage.clearUsedByOtherApps(packageName)) { |
| mPackageDexUsage.maybeWriteAsync(); |
| } |
| } |
| |
| /** |
| * Notifies that the user {@code userId} data for package {@code packageName} |
| * was destroyed. This will remove all usage info associated with the package |
| * for the given user. |
| * {@code userId} is allowed to be {@code UserHandle.USER_ALL} in which case |
| * all usage information for the package will be removed. |
| */ |
| public void notifyPackageDataDestroyed(String packageName, int userId) { |
| boolean updated = userId == UserHandle.USER_ALL |
| ? mPackageDexUsage.removePackage(packageName) |
| : mPackageDexUsage.removeUserPackage(packageName, userId); |
| // In case there was an update, write the package use info to disk async. |
| // Note that we do the writing here and not in PackageDexUsage in order to be |
| // consistent with other methods in DexManager (e.g. reconcileSecondaryDexFiles performs |
| // multiple updates in PackageDexUsage before writing it). |
| if (updated) { |
| mPackageDexUsage.maybeWriteAsync(); |
| } |
| } |
| |
| /** |
| * Caches the code location from the given package info. |
| */ |
| private void cachePackageInfo(PackageInfo pi, int userId) { |
| ApplicationInfo ai = pi.applicationInfo; |
| String[] dataDirs = new String[] {ai.dataDir, ai.deviceProtectedDataDir, |
| ai.credentialProtectedDataDir}; |
| cachePackageCodeLocation(pi.packageName, ai.sourceDir, ai.splitSourceDirs, |
| dataDirs, userId); |
| } |
| |
| private void cachePackageCodeLocation(String packageName, String baseCodePath, |
| String[] splitCodePaths, String[] dataDirs, int userId) { |
| synchronized (mPackageCodeLocationsCache) { |
| PackageCodeLocations pcl = putIfAbsent(mPackageCodeLocationsCache, packageName, |
| new PackageCodeLocations(packageName, baseCodePath, splitCodePaths)); |
| // TODO(calin): We are forced to extend the scope of this synchronization because |
| // the values of the cache (PackageCodeLocations) are updated in place. |
| // Make PackageCodeLocations immutable to simplify the synchronization reasoning. |
| pcl.updateCodeLocation(baseCodePath, splitCodePaths); |
| if (dataDirs != null) { |
| for (String dataDir : dataDirs) { |
| // The set of data dirs includes deviceProtectedDataDir and |
| // credentialProtectedDataDir which might be null for shared |
| // libraries. Currently we don't track these but be lenient |
| // and check in case we ever decide to store their usage data. |
| if (dataDir != null) { |
| pcl.mergeAppDataDirs(dataDir, userId); |
| } |
| } |
| } |
| } |
| } |
| |
| private void loadInternal(Map<Integer, List<PackageInfo>> existingPackages) { |
| Map<String, Set<Integer>> packageToUsersMap = new HashMap<>(); |
| // Cache the code locations for the installed packages. This allows for |
| // faster lookups (no locks) when finding what package owns the dex file. |
| for (Map.Entry<Integer, List<PackageInfo>> entry : existingPackages.entrySet()) { |
| List<PackageInfo> packageInfoList = entry.getValue(); |
| int userId = entry.getKey(); |
| for (PackageInfo pi : packageInfoList) { |
| // Cache the code locations. |
| cachePackageInfo(pi, userId); |
| |
| // Cache a map from package name to the set of user ids who installed the package. |
| // We will use it to sync the data and remove obsolete entries from |
| // mPackageDexUsage. |
| Set<Integer> users = putIfAbsent( |
| packageToUsersMap, pi.packageName, new HashSet<>()); |
| users.add(userId); |
| } |
| } |
| |
| mPackageDexUsage.read(); |
| mPackageDexUsage.syncData(packageToUsersMap); |
| } |
| |
| /** |
| * Get the package dex usage for the given package name. |
| * @return the package data or null if there is no data available for this package. |
| */ |
| public PackageUseInfo getPackageUseInfo(String packageName) { |
| return mPackageDexUsage.getPackageUseInfo(packageName); |
| } |
| |
| /** |
| * Perform dexopt on the package {@code packageName} secondary dex files. |
| * @return true if all secondary dex files were processed successfully (compiled or skipped |
| * because they don't need to be compiled).. |
| */ |
| public boolean dexoptSecondaryDex(String packageName, int compilerReason, boolean force, |
| boolean downgrade) { |
| return dexoptSecondaryDex(packageName, |
| PackageManagerServiceCompilerMapping.getCompilerFilterForReason(compilerReason), |
| force, /* compileOnlySharedDex */ false, downgrade); |
| } |
| |
| /** |
| * Perform dexopt on the package {@code packageName} secondary dex files. |
| * @return true if all secondary dex files were processed successfully (compiled or skipped |
| * because they don't need to be compiled).. |
| */ |
| public boolean dexoptSecondaryDex(String packageName, String compilerFilter, boolean force, |
| boolean compileOnlySharedDex, boolean downgrade) { |
| // Select the dex optimizer based on the force parameter. |
| // Forced compilation is done through ForcedUpdatePackageDexOptimizer which will adjust |
| // the necessary dexopt flags to make sure that compilation is not skipped. This avoid |
| // passing the force flag through the multitude of layers. |
| // Note: The force option is rarely used (cmdline input for testing, mostly), so it's OK to |
| // allocate an object here. |
| PackageDexOptimizer pdo = force |
| ? new PackageDexOptimizer.ForcedUpdatePackageDexOptimizer(mPackageDexOptimizer) |
| : mPackageDexOptimizer; |
| PackageUseInfo useInfo = getPackageUseInfo(packageName); |
| if (useInfo == null || useInfo.getDexUseInfoMap().isEmpty()) { |
| if (DEBUG) { |
| Slog.d(TAG, "No secondary dex use for package:" + packageName); |
| } |
| // Nothing to compile, return true. |
| return true; |
| } |
| boolean success = true; |
| for (Map.Entry<String, DexUseInfo> entry : useInfo.getDexUseInfoMap().entrySet()) { |
| String dexPath = entry.getKey(); |
| DexUseInfo dexUseInfo = entry.getValue(); |
| if (compileOnlySharedDex && !dexUseInfo.isUsedByOtherApps()) { |
| continue; |
| } |
| PackageInfo pkg = null; |
| try { |
| pkg = mPackageManager.getPackageInfo(packageName, /*flags*/0, |
| dexUseInfo.getOwnerUserId()); |
| } catch (RemoteException e) { |
| throw new AssertionError(e); |
| } |
| // It may be that the package gets uninstalled while we try to compile its |
| // secondary dex files. If that's the case, just ignore. |
| // Note that we don't break the entire loop because the package might still be |
| // installed for other users. |
| if (pkg == null) { |
| Slog.d(TAG, "Could not find package when compiling secondary dex " + packageName |
| + " for user " + dexUseInfo.getOwnerUserId()); |
| mPackageDexUsage.removeUserPackage(packageName, dexUseInfo.getOwnerUserId()); |
| continue; |
| } |
| |
| int result = pdo.dexOptSecondaryDexPath(pkg.applicationInfo, dexPath, |
| dexUseInfo.getLoaderIsas(), compilerFilter, dexUseInfo.isUsedByOtherApps(), |
| downgrade); |
| success = success && (result != PackageDexOptimizer.DEX_OPT_FAILED); |
| } |
| return success; |
| } |
| |
| /** |
| * Reconcile the information we have about the secondary dex files belonging to |
| * {@code packagName} and the actual dex files. For all dex files that were |
| * deleted, update the internal records and delete any generated oat files. |
| */ |
| public void reconcileSecondaryDexFiles(String packageName) { |
| PackageUseInfo useInfo = getPackageUseInfo(packageName); |
| if (useInfo == null || useInfo.getDexUseInfoMap().isEmpty()) { |
| if (DEBUG) { |
| Slog.d(TAG, "No secondary dex use for package:" + packageName); |
| } |
| // Nothing to reconcile. |
| return; |
| } |
| |
| boolean updated = false; |
| for (Map.Entry<String, DexUseInfo> entry : useInfo.getDexUseInfoMap().entrySet()) { |
| String dexPath = entry.getKey(); |
| DexUseInfo dexUseInfo = entry.getValue(); |
| PackageInfo pkg = null; |
| try { |
| // Note that we look for the package in the PackageManager just to be able |
| // to get back the real app uid and its storage kind. These are only used |
| // to perform extra validation in installd. |
| // TODO(calin): maybe a bit overkill. |
| pkg = mPackageManager.getPackageInfo(packageName, /*flags*/0, |
| dexUseInfo.getOwnerUserId()); |
| } catch (RemoteException ignore) { |
| // Can't happen, DexManager is local. |
| } |
| if (pkg == null) { |
| // It may be that the package was uninstalled while we process the secondary |
| // dex files. |
| Slog.d(TAG, "Could not find package when compiling secondary dex " + packageName |
| + " for user " + dexUseInfo.getOwnerUserId()); |
| // Update the usage and continue, another user might still have the package. |
| updated = mPackageDexUsage.removeUserPackage( |
| packageName, dexUseInfo.getOwnerUserId()) || updated; |
| continue; |
| } |
| ApplicationInfo info = pkg.applicationInfo; |
| int flags = 0; |
| if (info.deviceProtectedDataDir != null && |
| FileUtils.contains(info.deviceProtectedDataDir, dexPath)) { |
| flags |= StorageManager.FLAG_STORAGE_DE; |
| } else if (info.credentialProtectedDataDir!= null && |
| FileUtils.contains(info.credentialProtectedDataDir, dexPath)) { |
| flags |= StorageManager.FLAG_STORAGE_CE; |
| } else { |
| Slog.e(TAG, "Could not infer CE/DE storage for path " + dexPath); |
| updated = mPackageDexUsage.removeDexFile( |
| packageName, dexPath, dexUseInfo.getOwnerUserId()) || updated; |
| continue; |
| } |
| |
| boolean dexStillExists = true; |
| synchronized(mInstallLock) { |
| try { |
| String[] isas = dexUseInfo.getLoaderIsas().toArray(new String[0]); |
| dexStillExists = mInstaller.reconcileSecondaryDexFile(dexPath, packageName, |
| pkg.applicationInfo.uid, isas, pkg.applicationInfo.volumeUuid, flags); |
| } catch (InstallerException e) { |
| Slog.e(TAG, "Got InstallerException when reconciling dex " + dexPath + |
| " : " + e.getMessage()); |
| } |
| } |
| if (!dexStillExists) { |
| updated = mPackageDexUsage.removeDexFile( |
| packageName, dexPath, dexUseInfo.getOwnerUserId()) || updated; |
| } |
| |
| } |
| if (updated) { |
| mPackageDexUsage.maybeWriteAsync(); |
| } |
| } |
| |
| public RegisterDexModuleResult registerDexModule(ApplicationInfo info, String dexPath, |
| boolean isUsedByOtherApps, int userId) { |
| // Find the owning package record. |
| DexSearchResult searchResult = getDexPackage(info, dexPath, userId); |
| |
| if (searchResult.mOutcome == DEX_SEARCH_NOT_FOUND) { |
| return new RegisterDexModuleResult(false, "Package not found"); |
| } |
| if (!info.packageName.equals(searchResult.mOwningPackageName)) { |
| return new RegisterDexModuleResult(false, "Dex path does not belong to package"); |
| } |
| if (searchResult.mOutcome == DEX_SEARCH_FOUND_PRIMARY || |
| searchResult.mOutcome == DEX_SEARCH_FOUND_SPLIT) { |
| return new RegisterDexModuleResult(false, "Main apks cannot be registered"); |
| } |
| |
| // We found the package. Now record the usage for all declared ISAs. |
| boolean update = false; |
| Set<String> isas = new HashSet<>(); |
| for (String isa : getAppDexInstructionSets(info)) { |
| isas.add(isa); |
| boolean newUpdate = mPackageDexUsage.record(searchResult.mOwningPackageName, |
| dexPath, userId, isa, isUsedByOtherApps, /*primaryOrSplit*/ false); |
| update |= newUpdate; |
| } |
| if (update) { |
| mPackageDexUsage.maybeWriteAsync(); |
| } |
| |
| // Try to optimize the package according to the install reason. |
| String compilerFilter = PackageManagerServiceCompilerMapping.getCompilerFilterForReason( |
| PackageManagerService.REASON_INSTALL); |
| int result = mPackageDexOptimizer.dexOptSecondaryDexPath(info, dexPath, isas, |
| compilerFilter, isUsedByOtherApps, /* downgrade */ false); |
| |
| // If we fail to optimize the package log an error but don't propagate the error |
| // back to the app. The app cannot do much about it and the background job |
| // will rety again when it executes. |
| // TODO(calin): there might be some value to return the error here but it may |
| // cause red herrings since that doesn't mean the app cannot use the module. |
| if (result != PackageDexOptimizer.DEX_OPT_FAILED) { |
| Slog.e(TAG, "Failed to optimize dex module " + dexPath); |
| } |
| return new RegisterDexModuleResult(true, "Dex module registered successfully"); |
| } |
| |
| /** |
| * Return all packages that contain records of secondary dex files. |
| */ |
| public Set<String> getAllPackagesWithSecondaryDexFiles() { |
| return mPackageDexUsage.getAllPackagesWithSecondaryDexFiles(); |
| } |
| |
| /** |
| * Return true if the profiling data collected for the given app indicate |
| * that the apps's APK has been loaded by another app. |
| * Note that this returns false for all apps without any collected profiling data. |
| */ |
| public boolean isUsedByOtherApps(String packageName) { |
| PackageUseInfo useInfo = getPackageUseInfo(packageName); |
| if (useInfo == null) { |
| // No use info, means the package was not used or it was used but not by other apps. |
| // Note that right now we might prune packages which are not used by other apps. |
| // TODO(calin): maybe we should not (prune) so we can have an accurate view when we try |
| // to access the package use. |
| return false; |
| } |
| return useInfo.isUsedByOtherApps(); |
| } |
| |
| /** |
| * Retrieves the package which owns the given dexPath. |
| */ |
| private DexSearchResult getDexPackage( |
| ApplicationInfo loadingAppInfo, String dexPath, int userId) { |
| // Ignore framework code. |
| // TODO(calin): is there a better way to detect it? |
| if (dexPath.startsWith("/system/framework/")) { |
| return new DexSearchResult("framework", DEX_SEARCH_NOT_FOUND); |
| } |
| |
| // First, check if the package which loads the dex file actually owns it. |
| // Most of the time this will be true and we can return early. |
| PackageCodeLocations loadingPackageCodeLocations = |
| new PackageCodeLocations(loadingAppInfo, userId); |
| int outcome = loadingPackageCodeLocations.searchDex(dexPath, userId); |
| if (outcome != DEX_SEARCH_NOT_FOUND) { |
| // TODO(calin): evaluate if we bother to detect symlinks at the dexPath level. |
| return new DexSearchResult(loadingPackageCodeLocations.mPackageName, outcome); |
| } |
| |
| // The loadingPackage does not own the dex file. |
| // Perform a reverse look-up in the cache to detect if any package has ownership. |
| // Note that we can have false negatives if the cache falls out of date. |
| synchronized (mPackageCodeLocationsCache) { |
| for (PackageCodeLocations pcl : mPackageCodeLocationsCache.values()) { |
| outcome = pcl.searchDex(dexPath, userId); |
| if (outcome != DEX_SEARCH_NOT_FOUND) { |
| return new DexSearchResult(pcl.mPackageName, outcome); |
| } |
| } |
| } |
| |
| if (DEBUG) { |
| // TODO(calin): Consider checking for /data/data symlink. |
| // /data/data/ symlinks /data/user/0/ and there's nothing stopping apps |
| // to load dex files through it. |
| try { |
| String dexPathReal = PackageManagerServiceUtils.realpath(new File(dexPath)); |
| if (dexPathReal != dexPath) { |
| Slog.d(TAG, "Dex loaded with symlink. dexPath=" + |
| dexPath + " dexPathReal=" + dexPathReal); |
| } |
| } catch (IOException e) { |
| // Ignore |
| } |
| } |
| // Cache miss. The cache is updated during installs and uninstalls, |
| // so if we get here we're pretty sure the dex path does not exist. |
| return new DexSearchResult(null, DEX_SEARCH_NOT_FOUND); |
| } |
| |
| private static <K,V> V putIfAbsent(Map<K,V> map, K key, V newValue) { |
| V existingValue = map.putIfAbsent(key, newValue); |
| return existingValue == null ? newValue : existingValue; |
| } |
| |
| public static class RegisterDexModuleResult { |
| public RegisterDexModuleResult() { |
| this(false, null); |
| } |
| |
| public RegisterDexModuleResult(boolean success, String message) { |
| this.success = success; |
| this.message = message; |
| } |
| |
| public final boolean success; |
| public final String message; |
| } |
| |
| /** |
| * Convenience class to store the different locations where a package might |
| * own code. |
| */ |
| private static class PackageCodeLocations { |
| private final String mPackageName; |
| private String mBaseCodePath; |
| private final Set<String> mSplitCodePaths; |
| // Maps user id to the application private directory. |
| private final Map<Integer, Set<String>> mAppDataDirs; |
| |
| public PackageCodeLocations(ApplicationInfo ai, int userId) { |
| this(ai.packageName, ai.sourceDir, ai.splitSourceDirs); |
| mergeAppDataDirs(ai.dataDir, userId); |
| } |
| public PackageCodeLocations(String packageName, String baseCodePath, |
| String[] splitCodePaths) { |
| mPackageName = packageName; |
| mSplitCodePaths = new HashSet<>(); |
| mAppDataDirs = new HashMap<>(); |
| updateCodeLocation(baseCodePath, splitCodePaths); |
| } |
| |
| public void updateCodeLocation(String baseCodePath, String[] splitCodePaths) { |
| mBaseCodePath = baseCodePath; |
| mSplitCodePaths.clear(); |
| if (splitCodePaths != null) { |
| for (String split : splitCodePaths) { |
| mSplitCodePaths.add(split); |
| } |
| } |
| } |
| |
| public void mergeAppDataDirs(String dataDir, int userId) { |
| Set<String> dataDirs = putIfAbsent(mAppDataDirs, userId, new HashSet<>()); |
| dataDirs.add(dataDir); |
| } |
| |
| public int searchDex(String dexPath, int userId) { |
| // First check that this package is installed or active for the given user. |
| // A missing data dir means the package is not installed. |
| Set<String> userDataDirs = mAppDataDirs.get(userId); |
| if (userDataDirs == null) { |
| return DEX_SEARCH_NOT_FOUND; |
| } |
| |
| if (mBaseCodePath.equals(dexPath)) { |
| return DEX_SEARCH_FOUND_PRIMARY; |
| } |
| if (mSplitCodePaths.contains(dexPath)) { |
| return DEX_SEARCH_FOUND_SPLIT; |
| } |
| for (String dataDir : userDataDirs) { |
| if (dexPath.startsWith(dataDir)) { |
| return DEX_SEARCH_FOUND_SECONDARY; |
| } |
| } |
| |
| return DEX_SEARCH_NOT_FOUND; |
| } |
| } |
| |
| /** |
| * Convenience class to store ownership search results. |
| */ |
| private class DexSearchResult { |
| private String mOwningPackageName; |
| private int mOutcome; |
| |
| public DexSearchResult(String owningPackageName, int outcome) { |
| this.mOwningPackageName = owningPackageName; |
| this.mOutcome = outcome; |
| } |
| |
| @Override |
| public String toString() { |
| return mOwningPackageName + "-" + mOutcome; |
| } |
| } |
| } |
