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Commit fcde8146 authored by Lee Shombert's avatar Lee Shombert
Browse files

Take snapshots of SettingBase subclasses 

Bug: 192478088

Snapshot SharedUserSetting and PackageSetting.

Test: atest
 * CtsContentTestCases:IntentFilterTest
 * CtsDynamicMimeHostTestCases
 * CtsRoleTestCases
 * FrameworksServicesTests:UserSystemPackageInstallerTest
 * FrameworksServicesTests:PackageManagerSettingsTests
 * FrameworksServicesTests:PackageManagerServiceTest
 * FrameworksServicesTests:AppsFilterTest
 * FrameworksServicesTests:PackageInstallerSessionTest
 * FrameworksServicesTests:ScanTests
 * UserLifecycleTests#startUser
 * UserLifecycleTests#stopUser
 * UserLifecycleTests#switchUser
 * FrameworksServicesTests:WatcherTest
 * android.appsecurity.cts.EphemeralTest
 * android.appsecurity.cts.InstantAppUserTest

Change-Id: I5ccd77bd8a07aa833219c6bab797cdc153c1136f
parent 16d25c70

services/core/java/com/android/server/pm/PackageSetting.java

+44 −0
Original line number Diff line number Diff line
@@ -31,6 +31,7 @@ import com.android.server.pm.parsing.pkg.AndroidPackage; 
import com.android.server.pm.permission.LegacyPermissionDataProvider;

import com.android.server.pm.permission.LegacyPermissionState;

import com.android.server.pm.pkg.PackageStateUnserialized;

import com.android.server.utils.SnapshotCache;



import java.io.File;

import java.util.ArrayList;
@@ -81,6 +82,7 @@ public class PackageSetting extends PackageSettingBase { 
     * object equality to check whether shared user settings are the same.

     */

    SharedUserSetting sharedUser;



    /**

     * Temporary holding space for the shared user ID. While parsing package settings, the

     * shared users tag may come after the packages. In this case, we must delay linking the
@@ -103,6 +105,19 @@ public class PackageSetting extends PackageSettingBase { 
    @NonNull

    private UUID mDomainSetId;



    /**

     * Snapshot support.

     */

    private final SnapshotCache<PackageSetting> mSnapshot;



    private SnapshotCache<PackageSetting> makeCache() {

        return new SnapshotCache<PackageSetting>(this, this) {

            @Override

            public PackageSetting createSnapshot() {

                return new PackageSetting(mSource, true);

            }};

    }



    @VisibleForTesting(visibility = VisibleForTesting.Visibility.PACKAGE)

    public PackageSetting(String name, String realName, @NonNull File codePath,

            String legacyNativeLibraryPathString, String primaryCpuAbiString,
@@ -118,6 +133,7 @@ public class PackageSetting extends PackageSettingBase { 
        this.sharedUserId = sharedUserId;

        mDomainSetId = domainSetId;

        copyMimeGroups(mimeGroups);

        mSnapshot = makeCache();

    }



    /**
@@ -127,6 +143,7 @@ public class PackageSetting extends PackageSettingBase { 
    PackageSetting(PackageSetting orig) {

        super(orig, orig.realName);

        doCopy(orig);

        mSnapshot = makeCache();

    }



    /**
@@ -137,6 +154,33 @@ public class PackageSetting extends PackageSettingBase { 
    PackageSetting(PackageSetting orig, String realPkgName) {

        super(orig, realPkgName);

        doCopy(orig);

        mSnapshot = makeCache();

    }



    /**

     * Create a snapshot.  The copy constructor is already in use and cannot be modified

     * for this purpose.

     */

    PackageSetting(PackageSetting orig, boolean snapshot) {

        super(orig, snapshot);

        // The existing doCopy() method cannot be used in here because sharedUser must be

        // a snapshot, and not a reference.  Also, the pkgState must be copied.  However,

        // this code should otherwise be kept in sync with doCopy().

        appId = orig.appId;

        pkg = orig.pkg;

        sharedUser = orig.sharedUser == null ? null : orig.sharedUser.snapshot();

        sharedUserId = orig.sharedUserId;

        copyMimeGroups(orig.mimeGroups);

        pkgState = orig.pkgState;

        mDomainSetId = orig.getDomainSetId();

        mSnapshot = new SnapshotCache.Sealed();

    }



    /**

     * Return the package snapshot.

     */

    public PackageSetting snapshot() {

        return mSnapshot.snapshot();

    }



    /** @see #pkg **/

services/core/java/com/android/server/pm/PackageSettingBase.java

+9 −0
Original line number Diff line number Diff line
@@ -169,6 +169,15 @@ public abstract class PackageSettingBase extends SettingBase { 
        doCopy(base);

    }



    // A copy constructor used to create snapshots.  The boolean is present only to

    // match up with the constructor in PackageSetting.

    PackageSettingBase(PackageSettingBase orig, boolean snapshot) {

        super(orig);

        name = orig.name;

        realName = orig.realName;

        doCopy(orig);

    }



    public void setInstallerPackageName(String packageName) {

        installSource = installSource.setInstallerPackage(packageName);

        onChanged();

services/core/java/com/android/server/pm/SettingBase.java

+2 −1
Original line number Diff line number Diff line
@@ -22,12 +22,13 @@ import android.content.pm.ApplicationInfo; 


import com.android.internal.annotations.VisibleForTesting;

import com.android.server.pm.permission.LegacyPermissionState;

import com.android.server.utils.Snappable;

import com.android.server.utils.Watchable;

import com.android.server.utils.WatchableImpl;

import com.android.server.utils.Watcher;



@VisibleForTesting(visibility = VisibleForTesting.Visibility.PACKAGE)

public abstract class SettingBase implements Watchable {

public abstract class SettingBase implements Watchable, Snappable {

    // TODO: make this variable protected, or even private with a getter and setter.

    // Simply making it protected or private requires that the name be changed to conformm

    // to the Android naming convention, and that touches quite a few files.

services/core/java/com/android/server/pm/SharedUserSetting.java

+45 −8
Original line number Diff line number Diff line
@@ -26,6 +26,7 @@ import android.util.proto.ProtoOutputStream; 


import com.android.internal.util.ArrayUtils;

import com.android.server.pm.parsing.pkg.AndroidPackage;

import com.android.server.utils.SnapshotCache;



import libcore.util.EmptyArray;
@@ -49,12 +50,25 @@ public final class SharedUserSetting extends SettingBase { 
    // that all apps within the sharedUser run in the same selinux context.

    int seInfoTargetSdkVersion;



    final ArraySet<PackageSetting> packages = new ArraySet<>();

    final ArraySet<PackageSetting> packages;



    final PackageSignatures signatures = new PackageSignatures();

    Boolean signaturesChanged;



    ArrayMap<String, ParsedProcess> processes;

    final ArrayMap<String, ParsedProcess> processes;



    /**

     * Snapshot support.

     */

    private final SnapshotCache<SharedUserSetting> mSnapshot;



    private SnapshotCache<SharedUserSetting> makeCache() {

        return new SnapshotCache<SharedUserSetting>(this, this) {

            @Override

            public SharedUserSetting createSnapshot() {

                return new SharedUserSetting(mSource);

            }};

    }



    SharedUserSetting(String _name, int _pkgFlags, int _pkgPrivateFlags) {

        super(_pkgFlags, _pkgPrivateFlags);
@@ -62,6 +76,31 @@ public final class SharedUserSetting extends SettingBase { 
        uidPrivateFlags = _pkgPrivateFlags;

        name = _name;

        seInfoTargetSdkVersion = android.os.Build.VERSION_CODES.CUR_DEVELOPMENT;

        packages = new ArraySet<>();

        processes = new ArrayMap<>();

        mSnapshot = makeCache();

    }



    // The copy constructor is used to create a snapshot

    private SharedUserSetting(SharedUserSetting orig) {

        super(orig);

        name = orig.name;

        uidFlags = orig.uidFlags;

        uidPrivateFlags = orig.uidPrivateFlags;

        packages = new ArraySet(orig.packages);

        // A PackageParser.SigningDetails seems to consist solely of final attributes, so

        // it is safe to copy the reference.

        signatures.mSigningDetails = orig.signatures.mSigningDetails;

        signaturesChanged = orig.signaturesChanged;

        processes = new ArrayMap(orig.processes);

        mSnapshot = new SnapshotCache.Sealed();

    }



    /**

     * Return a read-only snapshot of this object.

     */

    public SharedUserSetting snapshot() {

        return mSnapshot.snapshot();

    }



    @Override
@@ -80,9 +119,6 @@ public final class SharedUserSetting extends SettingBase { 
    void addProcesses(Map<String, ParsedProcess> newProcs) {

        if (newProcs != null) {

            final int numProcs = newProcs.size();

            if (processes == null) {

                processes = new ArrayMap<>(numProcs);

            }

            for (String key : newProcs.keySet()) {

                ParsedProcess newProc = newProcs.get(key);

                ParsedProcess proc = processes.get(newProc.getName());
@@ -191,7 +227,7 @@ public final class SharedUserSetting extends SettingBase { 
     * Update tracked data about processes based on all known packages in the shared user ID.

     */

    public void updateProcesses() {

        processes = null;

        processes.clear();

        for (int i = packages.size() - 1; i >= 0; i--) {

            final AndroidPackage pkg = packages.valueAt(i).pkg;

            if (pkg != null) {
@@ -230,14 +266,15 @@ public final class SharedUserSetting extends SettingBase { 
        this.signaturesChanged = sharedUser.signaturesChanged;

        if (sharedUser.processes != null) {

            final int numProcs = sharedUser.processes.size();

            this.processes = new ArrayMap<>(numProcs);

            this.processes.clear();

            this.processes.ensureCapacity(numProcs);

            for (int i = 0; i < numProcs; i++) {

                ParsedProcess proc =

                        new ParsedProcess(sharedUser.processes.valueAt(i));

                this.processes.put(proc.getName(), proc);

            }

        } else {

            this.processes = null;

            this.processes.clear();

        }

        onChanged();

        return this;

services/tests/servicestests/src/com/android/server/pm/PackageManagerSettingsTests.java

+1 −0
Original line number Diff line number Diff line
@@ -198,6 +198,7 @@ public class PackageManagerSettingsTests { 
                new WatchableTester(settingsUnderTest, "noSuspendingPackage");

        watcher.register();

        settingsUnderTest.mPackages.put(PACKAGE_NAME_1, createPackageSetting(PACKAGE_NAME_1));

        settingsUnderTest.readPackageRestrictionsLPr(0);

        watcher.verifyChangeReported("put package 1");

        // Collect a snapshot at the midway point (package 2 has not been added)

        final Settings snapshot = settingsUnderTest.snapshot();