Merge "Cleanup nativeHeapZeroInit and memtagMode implementation."

core/api/current.txt

@@ -978,7 +978,7 @@ package android {
     field public static final int multiArch = 16843918; // 0x101048e
     field public static final int multiprocess = 16842771; // 0x1010013
     field public static final int name = 16842755; // 0x1010003
-    field public static final int nativeHeapZeroInit = 16844314; // 0x101061a
+    field public static final int nativeHeapZeroInitialized = 16844314; // 0x101061a
     field public static final int navigationBarColor = 16843858; // 0x1010452
     field public static final int navigationBarDividerColor = 16844141; // 0x101056d
     field public static final int navigationContentDescription = 16843969; // 0x10104c1
@@ -11466,7 +11466,7 @@ package android.content.pm {
     method public static CharSequence getCategoryTitle(android.content.Context, int);
     method public int getGwpAsanMode();
     method public int getMemtagMode();
-    method @Nullable public Boolean isNativeHeapZeroInit();
+    method public int getNativeHeapZeroInitialized();
     method public boolean isProfileableByShell();
     method public boolean isResourceOverlay();
     method public boolean isVirtualPreload();
@@ -11520,6 +11520,9 @@ package android.content.pm {
     field public static final int MEMTAG_DEFAULT = -1; // 0xffffffff
     field public static final int MEMTAG_OFF = 0; // 0x0
     field public static final int MEMTAG_SYNC = 2; // 0x2
+    field public static final int ZEROINIT_DEFAULT = -1; // 0xffffffff
+    field public static final int ZEROINIT_DISABLED = 0; // 0x0
+    field public static final int ZEROINIT_ENABLED = 1; // 0x1
     field public String appComponentFactory;
     field public String backupAgentName;
     field public int category;

core/java/android/content/pm/ApplicationInfo.java

@@ -1337,7 +1337,7 @@ public class ApplicationInfo extends PackageItemInfo implements Parcelable {
      * Indicates if the application has requested GWP-ASan to be enabled, disabled, or left
      * unspecified. Processes can override this setting.
      */
-    private @GwpAsanMode int gwpAsanMode;
+    private @GwpAsanMode int gwpAsanMode = GWP_ASAN_DEFAULT;
 
     /**
      * Default (unspecified) setting of Memtag.
@@ -1376,13 +1376,38 @@ public class ApplicationInfo extends PackageItemInfo implements Parcelable {
      * Indicates if the application has requested Memtag to be enabled, disabled, or left
      * unspecified. Processes can override this setting.
      */
-    private @MemtagMode int memtagMode;
+    private @MemtagMode int memtagMode = MEMTAG_DEFAULT;
+
+    /**
+     * Default (unspecified) setting of nativeHeapZeroInitialized.
+     */
+    public static final int ZEROINIT_DEFAULT = -1;
+
+    /**
+     * Disable zero-initialization of the native heap in this application or process.
+     */
+    public static final int ZEROINIT_DISABLED = 0;
+
+    /**
+     * Enable zero-initialization of the native heap in this application or process.
+     */
+    public static final int ZEROINIT_ENABLED = 1;
+
+    /**
+     * @hide
+     */
+    @IntDef(prefix = {"ZEROINIT_"}, value = {
+            ZEROINIT_DEFAULT,
+            ZEROINIT_DISABLED,
+            ZEROINIT_ENABLED,
+    })
+    @Retention(RetentionPolicy.SOURCE)
+    public @interface NativeHeapZeroInitialized {}
 
     /**
      * Enable automatic zero-initialization of native heap memory allocations.
      */
-    @Nullable
+    private @NativeHeapZeroInitialized int nativeHeapZeroInitialized = ZEROINIT_DEFAULT;
-    private Boolean nativeHeapZeroInit;
 
     /**
      * Represents the default policy. The actual policy used will depend on other properties of
@@ -1531,8 +1556,8 @@ public class ApplicationInfo extends PackageItemInfo implements Parcelable {
             if (memtagMode != MEMTAG_DEFAULT) {
                 pw.println(prefix + "memtagMode=" + memtagMode);
             }
-            if (nativeHeapZeroInit != null) {
+            if (nativeHeapZeroInitialized != ZEROINIT_DEFAULT) {
-                pw.println(prefix + "nativeHeapZeroInit=" + nativeHeapZeroInit);
+                pw.println(prefix + "nativeHeapZeroInitialized=" + nativeHeapZeroInitialized);
             }
         }
         super.dumpBack(pw, prefix);
@@ -1638,8 +1663,9 @@ public class ApplicationInfo extends PackageItemInfo implements Parcelable {
             if (memtagMode != MEMTAG_DEFAULT) {
                 proto.write(ApplicationInfoProto.Detail.ENABLE_MEMTAG, memtagMode);
             }
-            if (nativeHeapZeroInit != null) {
+            if (nativeHeapZeroInitialized != ZEROINIT_DEFAULT) {
-                proto.write(ApplicationInfoProto.Detail.NATIVE_HEAP_ZERO_INIT, nativeHeapZeroInit);
+                proto.write(ApplicationInfoProto.Detail.NATIVE_HEAP_ZERO_INIT,
+                        nativeHeapZeroInitialized);
             }
             proto.end(detailToken);
         }
@@ -1752,7 +1778,7 @@ public class ApplicationInfo extends PackageItemInfo implements Parcelable {
         zygotePreloadName = orig.zygotePreloadName;
         gwpAsanMode = orig.gwpAsanMode;
         memtagMode = orig.memtagMode;
-        nativeHeapZeroInit = orig.nativeHeapZeroInit;
+        nativeHeapZeroInitialized = orig.nativeHeapZeroInitialized;
     }
 
     public String toString() {
@@ -1838,7 +1864,7 @@ public class ApplicationInfo extends PackageItemInfo implements Parcelable {
         dest.writeString8(zygotePreloadName);
         dest.writeInt(gwpAsanMode);
         dest.writeInt(memtagMode);
-        sForBoolean.parcel(nativeHeapZeroInit, dest, parcelableFlags);
+        dest.writeInt(nativeHeapZeroInitialized);
     }
 
     public static final @android.annotation.NonNull Parcelable.Creator<ApplicationInfo> CREATOR
@@ -1921,7 +1947,7 @@ public class ApplicationInfo extends PackageItemInfo implements Parcelable {
         zygotePreloadName = source.readString8();
         gwpAsanMode = source.readInt();
         memtagMode = source.readInt();
-        nativeHeapZeroInit = sForBoolean.unparcel(source);
+        nativeHeapZeroInitialized = source.readInt();
     }
 
     /**
@@ -2314,7 +2340,9 @@ public class ApplicationInfo extends PackageItemInfo implements Parcelable {
     /** {@hide} */ public void setSplitResourcePaths(String[] splitResourcePaths) { splitPublicSourceDirs = splitResourcePaths; }
     /** {@hide} */ public void setGwpAsanMode(@GwpAsanMode int value) { gwpAsanMode = value; }
     /** {@hide} */ public void setMemtagMode(@MemtagMode int value) { memtagMode = value; }
-    /** {@hide} */ public void setNativeHeapZeroInit(@Nullable Boolean value) { nativeHeapZeroInit = value; }
+    /** {@hide} */ public void setNativeHeapZeroInitialized(@NativeHeapZeroInitialized int value) {
+        nativeHeapZeroInitialized = value;
+    }
 
     /** {@hide} */
     @UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553)
@@ -2328,8 +2356,22 @@ public class ApplicationInfo extends PackageItemInfo implements Parcelable {
     /** {@hide} */ public String[] getSplitResourcePaths() { return splitPublicSourceDirs; }
     @GwpAsanMode
     public int getGwpAsanMode() { return gwpAsanMode; }
+
+    /**
+     * Returns whether the application has requested Memtag to be enabled, disabled, or left
+     * unspecified. Processes can override this setting.
+     */
     @MemtagMode
-    public int getMemtagMode() { return memtagMode; }
+    public int getMemtagMode() {
-    @Nullable
+        return memtagMode;
-    public Boolean isNativeHeapZeroInit() { return nativeHeapZeroInit; }
+    }
+
+    /**
+     * Returns whether the application has requested automatic zero-initialization of native heap
+     * memory allocations to be enabled or disabled.
+     */
+    @NativeHeapZeroInitialized
+    public int getNativeHeapZeroInitialized() {
+        return nativeHeapZeroInitialized;
+    }
 }

core/java/android/content/pm/ProcessInfo.java

@@ -62,8 +62,7 @@ public class ProcessInfo implements Parcelable {
     /**
      * Enable automatic zero-initialization of native heap memory allocations.
      */
-    @Nullable
+    public @ApplicationInfo.NativeHeapZeroInitialized int nativeHeapZeroInitialized;
-    public Boolean nativeHeapZeroInit;
 
     @Deprecated
     public ProcessInfo(@NonNull ProcessInfo orig) {
@@ -71,7 +70,7 @@ public class ProcessInfo implements Parcelable {
         this.deniedPermissions = orig.deniedPermissions;
         this.gwpAsanMode = orig.gwpAsanMode;
         this.memtagMode = orig.memtagMode;
-        this.nativeHeapZeroInit = orig.nativeHeapZeroInit;
+        this.nativeHeapZeroInitialized = orig.nativeHeapZeroInitialized;
     }
 
 
@@ -101,7 +100,7 @@ public class ProcessInfo implements Parcelable {
      * @param memtagMode
      *   Indicates if the process has requested Memtag to be enabled (in sync or async mode),
      *   disabled, or left unspecified.
-     * @param nativeHeapZeroInit
+     * @param nativeHeapZeroInitialized
      *   Enable automatic zero-initialization of native heap memory allocations.
      */
     @DataClass.Generated.Member
@@ -110,7 +109,7 @@ public class ProcessInfo implements Parcelable {
             @Nullable ArraySet<String> deniedPermissions,
             @ApplicationInfo.GwpAsanMode int gwpAsanMode,
             @ApplicationInfo.MemtagMode int memtagMode,
-            @Nullable Boolean nativeHeapZeroInit) {
+            @ApplicationInfo.NativeHeapZeroInitialized int nativeHeapZeroInitialized) {
         this.name = name;
         com.android.internal.util.AnnotationValidations.validate(
                 NonNull.class, null, name);
@@ -121,7 +120,9 @@ public class ProcessInfo implements Parcelable {
         this.memtagMode = memtagMode;
         com.android.internal.util.AnnotationValidations.validate(
                 ApplicationInfo.MemtagMode.class, null, memtagMode);
-        this.nativeHeapZeroInit = nativeHeapZeroInit;
+        this.nativeHeapZeroInitialized = nativeHeapZeroInitialized;
+        com.android.internal.util.AnnotationValidations.validate(
+                ApplicationInfo.NativeHeapZeroInitialized.class, null, nativeHeapZeroInitialized);
 
         // onConstructed(); // You can define this method to get a callback
     }
@@ -145,13 +146,12 @@ public class ProcessInfo implements Parcelable {
 
         byte flg = 0;
         if (deniedPermissions != null) flg |= 0x2;
-        if (nativeHeapZeroInit != null) flg |= 0x10;
         dest.writeByte(flg);
         dest.writeString(name);
         sParcellingForDeniedPermissions.parcel(deniedPermissions, dest, flags);
         dest.writeInt(gwpAsanMode);
         dest.writeInt(memtagMode);
-        if (nativeHeapZeroInit != null) dest.writeBoolean(nativeHeapZeroInit);
+        dest.writeInt(nativeHeapZeroInitialized);
     }
 
     @Override
@@ -170,7 +170,7 @@ public class ProcessInfo implements Parcelable {
         ArraySet<String> _deniedPermissions = sParcellingForDeniedPermissions.unparcel(in);
         int _gwpAsanMode = in.readInt();
         int _memtagMode = in.readInt();
-        Boolean _nativeHeapZeroInit = (flg & 0x10) == 0 ? null : (Boolean) in.readBoolean();
+        int _nativeHeapZeroInitialized = in.readInt();
 
         this.name = _name;
         com.android.internal.util.AnnotationValidations.validate(
@@ -182,7 +182,9 @@ public class ProcessInfo implements Parcelable {
         this.memtagMode = _memtagMode;
         com.android.internal.util.AnnotationValidations.validate(
                 ApplicationInfo.MemtagMode.class, null, memtagMode);
-        this.nativeHeapZeroInit = _nativeHeapZeroInit;
+        this.nativeHeapZeroInitialized = _nativeHeapZeroInitialized;
+        com.android.internal.util.AnnotationValidations.validate(
+                ApplicationInfo.NativeHeapZeroInitialized.class, null, nativeHeapZeroInitialized);
 
         // onConstructed(); // You can define this method to get a callback
     }
@@ -202,10 +204,10 @@ public class ProcessInfo implements Parcelable {
     };
 
     @DataClass.Generated(
-            time = 1611614699049L,
+            time = 1615850184524L,
             codegenVersion = "1.0.22",
             sourceFile = "frameworks/base/core/java/android/content/pm/ProcessInfo.java",
-            inputSignatures = "public @android.annotation.NonNull java.lang.String name\npublic @android.annotation.Nullable @com.android.internal.util.DataClass.ParcelWith(com.android.internal.util.Parcelling.BuiltIn.ForInternedStringArraySet.class) android.util.ArraySet<java.lang.String> deniedPermissions\npublic @android.content.pm.ApplicationInfo.GwpAsanMode int gwpAsanMode\npublic @android.content.pm.ApplicationInfo.MemtagMode int memtagMode\npublic @android.annotation.Nullable java.lang.Boolean nativeHeapZeroInit\nclass ProcessInfo extends java.lang.Object implements [android.os.Parcelable]\n@com.android.internal.util.DataClass(genGetters=true, genSetters=false, genParcelable=true, genAidl=false, genBuilder=false)")
+            inputSignatures = "public @android.annotation.NonNull java.lang.String name\npublic @android.annotation.Nullable @com.android.internal.util.DataClass.ParcelWith(com.android.internal.util.Parcelling.BuiltIn.ForInternedStringArraySet.class) android.util.ArraySet<java.lang.String> deniedPermissions\npublic @android.content.pm.ApplicationInfo.GwpAsanMode int gwpAsanMode\npublic @android.content.pm.ApplicationInfo.MemtagMode int memtagMode\npublic @android.content.pm.ApplicationInfo.NativeHeapZeroInitialized int nativeHeapZeroInitialized\nclass ProcessInfo extends java.lang.Object implements [android.os.Parcelable]\n@com.android.internal.util.DataClass(genGetters=true, genSetters=false, genParcelable=true, genAidl=false, genBuilder=false)")
     @Deprecated
     private void __metadata() {}
 

core/java/android/content/pm/parsing/ParsingPackage.java

@@ -19,6 +19,7 @@ package android.content.pm.parsing;
 import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.content.Intent;
+import android.content.pm.ApplicationInfo;
 import android.content.pm.ConfigurationInfo;
 import android.content.pm.FeatureGroupInfo;
 import android.content.pm.FeatureInfo;
@@ -239,11 +240,12 @@ public interface ParsingPackage extends ParsingPackageRead {
 
     ParsingPackage setEnabled(boolean enabled);
 
-    ParsingPackage setGwpAsanMode(int gwpAsanMode);
+    ParsingPackage setGwpAsanMode(@ApplicationInfo.GwpAsanMode int gwpAsanMode);
 
-    ParsingPackage setMemtagMode(int memtagMode);
+    ParsingPackage setMemtagMode(@ApplicationInfo.MemtagMode int memtagMode);
 
-    ParsingPackage setNativeHeapZeroInit(@Nullable Boolean nativeHeapZeroInit);
+    ParsingPackage setNativeHeapZeroInitialized(
+            @ApplicationInfo.NativeHeapZeroInitialized int nativeHeapZeroInitialized);
 
     ParsingPackage setCrossProfile(boolean crossProfile);
 

core/java/android/content/pm/parsing/ParsingPackageImpl.java

@@ -417,12 +417,14 @@ public class ParsingPackageImpl implements ParsingPackage, Parcelable {
     private int autoRevokePermissions;
     private boolean preserveLegacyExternalStorage;
 
-    protected int gwpAsanMode;
+    @ApplicationInfo.GwpAsanMode
-    protected int memtagMode;
+    private int gwpAsanMode;
 
-    @Nullable
+    @ApplicationInfo.MemtagMode
-    @DataClass.ParcelWith(ForBoolean.class)
+    private int memtagMode;
-    private Boolean nativeHeapZeroInit;
+
+    @ApplicationInfo.NativeHeapZeroInitialized
+    private int nativeHeapZeroInitialized;
 
     // TODO(chiuwinson): Non-null
     @Nullable
@@ -934,7 +936,7 @@ public class ParsingPackageImpl implements ParsingPackage, Parcelable {
         appInfo.crossProfile = isCrossProfile();
         appInfo.setGwpAsanMode(gwpAsanMode);
         appInfo.setMemtagMode(memtagMode);
-        appInfo.setNativeHeapZeroInit(nativeHeapZeroInit);
+        appInfo.setNativeHeapZeroInitialized(nativeHeapZeroInitialized);
         appInfo.setBaseCodePath(baseCodePath);
         appInfo.setBaseResourcePath(baseCodePath);
         appInfo.setCodePath(codePath);
@@ -1121,7 +1123,7 @@ public class ParsingPackageImpl implements ParsingPackage, Parcelable {
         dest.writeInt(this.gwpAsanMode);
         dest.writeSparseIntArray(this.minExtensionVersions);
         dest.writeInt(this.memtagMode);
-        sForBoolean.parcel(this.nativeHeapZeroInit, dest, flags);
+        dest.writeInt(this.nativeHeapZeroInitialized);
     }
 
     public ParsingPackageImpl(Parcel in) {
@@ -1284,7 +1286,7 @@ public class ParsingPackageImpl implements ParsingPackage, Parcelable {
         this.gwpAsanMode = in.readInt();
         this.minExtensionVersions = in.readSparseIntArray();
         this.memtagMode = in.readInt();
-        this.nativeHeapZeroInit = sForBoolean.unparcel(in);
+        this.nativeHeapZeroInitialized = in.readInt();
     }
 
     public static final Parcelable.Creator<ParsingPackageImpl> CREATOR =
@@ -2012,20 +2014,22 @@ public class ParsingPackageImpl implements ParsingPackage, Parcelable {
         return directBootAware;
     }
 
+    @ApplicationInfo.GwpAsanMode
     @Override
     public int getGwpAsanMode() {
         return gwpAsanMode;
     }
 
+    @ApplicationInfo.MemtagMode
     @Override
     public int getMemtagMode() {
         return memtagMode;
     }
 
-    @Nullable
+    @ApplicationInfo.NativeHeapZeroInitialized
     @Override
-    public Boolean isNativeHeapZeroInit() {
+    public int getNativeHeapZeroInitialized() {
-        return nativeHeapZeroInit;
+        return nativeHeapZeroInitialized;
     }
 
     @Override
@@ -2495,20 +2499,21 @@ public class ParsingPackageImpl implements ParsingPackage, Parcelable {
     }
 
     @Override
-    public ParsingPackageImpl setGwpAsanMode(int value) {
+    public ParsingPackageImpl setGwpAsanMode(@ApplicationInfo.GwpAsanMode int value) {
         gwpAsanMode = value;
         return this;
     }
 
     @Override
-    public ParsingPackageImpl setMemtagMode(int value) {
+    public ParsingPackageImpl setMemtagMode(@ApplicationInfo.MemtagMode int value) {
         memtagMode = value;
         return this;
     }
 
     @Override
-    public ParsingPackageImpl setNativeHeapZeroInit(@Nullable Boolean value) {
+    public ParsingPackageImpl setNativeHeapZeroInitialized(
-        nativeHeapZeroInit = value;
+            @ApplicationInfo.NativeHeapZeroInitialized int value) {
+        nativeHeapZeroInitialized = value;
         return this;
     }
 

core/java/android/content/pm/parsing/ParsingPackageRead.java

@@ -854,20 +854,22 @@ public interface ParsingPackageRead extends Parcelable {
      * @see ApplicationInfo#gwpAsanMode
      * @see R.styleable#AndroidManifest_gwpAsanMode
      */
-    public int getGwpAsanMode();
+    @ApplicationInfo.GwpAsanMode
+    int getGwpAsanMode();
 
     /**
      * @see ApplicationInfo#memtagMode
      * @see R.styleable#AndroidManifest_memtagMode
      */
+    @ApplicationInfo.MemtagMode
     int getMemtagMode();
 
-      /**
+    /**
-     * @see ApplicationInfo#nativeHeapZeroInit
+     * @see ApplicationInfo#nativeHeapZeroInitialized
-     * @see R.styleable#AndroidManifest_nativeHeapZeroInit
+     * @see R.styleable#AndroidManifest_nativeHeapZeroInitialized
      */
-    @Nullable
+    @ApplicationInfo.NativeHeapZeroInitialized
-    Boolean isNativeHeapZeroInit();
+    int getNativeHeapZeroInitialized();
 
     // TODO(b/135203078): Hide and enforce going through PackageInfoUtils
     ApplicationInfo toAppInfoWithoutState();

core/java/android/content/pm/parsing/ParsingPackageUtils.java

@@ -1800,9 +1800,11 @@ public class ParsingPackageUtils {
 
             pkg.setGwpAsanMode(sa.getInt(R.styleable.AndroidManifestApplication_gwpAsanMode, -1));
             pkg.setMemtagMode(sa.getInt(R.styleable.AndroidManifestApplication_memtagMode, -1));
-            if (sa.hasValue(R.styleable.AndroidManifestApplication_nativeHeapZeroInit)) {
+            if (sa.hasValue(R.styleable.AndroidManifestApplication_nativeHeapZeroInitialized)) {
-                pkg.setNativeHeapZeroInit(sa.getBoolean(
+                Boolean v = sa.getBoolean(
-                        R.styleable.AndroidManifestApplication_nativeHeapZeroInit, false));
+                        R.styleable.AndroidManifestApplication_nativeHeapZeroInitialized, false);
+                pkg.setNativeHeapZeroInitialized(
+                        v ? ApplicationInfo.ZEROINIT_ENABLED : ApplicationInfo.ZEROINIT_DISABLED);
             }
         } finally {
             sa.recycle();

core/java/android/content/pm/parsing/component/ParsedProcess.java

@@ -42,10 +42,12 @@ public class ParsedProcess implements Parcelable {
     @DataClass.ParcelWith(Parcelling.BuiltIn.ForInternedStringSet.class)
     protected Set<String> deniedPermissions = emptySet();
 
+    @ApplicationInfo.GwpAsanMode
     protected int gwpAsanMode = ApplicationInfo.GWP_ASAN_DEFAULT;
+    @ApplicationInfo.MemtagMode
     protected int memtagMode = ApplicationInfo.MEMTAG_DEFAULT;
-    @Nullable
+    @ApplicationInfo.NativeHeapZeroInitialized
-    protected Boolean nativeHeapZeroInit = null;
+    protected int nativeHeapZeroInitialized = ApplicationInfo.ZEROINIT_DEFAULT;
 
     public ParsedProcess() {
     }
@@ -78,9 +80,9 @@ public class ParsedProcess implements Parcelable {
     public ParsedProcess(
             @NonNull String name,
             @NonNull Set<String> deniedPermissions,
-            int gwpAsanMode,
+            @ApplicationInfo.GwpAsanMode int gwpAsanMode,
-            int memtagMode,
+            @ApplicationInfo.MemtagMode int memtagMode,
-            @Nullable Boolean nativeHeapZeroInit) {
+            @ApplicationInfo.NativeHeapZeroInitialized int nativeHeapZeroInitialized) {
         this.name = name;
         com.android.internal.util.AnnotationValidations.validate(
                 NonNull.class, null, name);
@@ -88,8 +90,14 @@ public class ParsedProcess implements Parcelable {
         com.android.internal.util.AnnotationValidations.validate(
                 NonNull.class, null, deniedPermissions);
         this.gwpAsanMode = gwpAsanMode;
+        com.android.internal.util.AnnotationValidations.validate(
+                ApplicationInfo.GwpAsanMode.class, null, gwpAsanMode);
         this.memtagMode = memtagMode;
-        this.nativeHeapZeroInit = nativeHeapZeroInit;
+        com.android.internal.util.AnnotationValidations.validate(
+                ApplicationInfo.MemtagMode.class, null, memtagMode);
+        this.nativeHeapZeroInitialized = nativeHeapZeroInitialized;
+        com.android.internal.util.AnnotationValidations.validate(
+                ApplicationInfo.NativeHeapZeroInitialized.class, null, nativeHeapZeroInitialized);
 
         // onConstructed(); // You can define this method to get a callback
     }
@@ -105,18 +113,18 @@ public class ParsedProcess implements Parcelable {
     }
 
     @DataClass.Generated.Member
-    public int getGwpAsanMode() {
+    public @ApplicationInfo.GwpAsanMode int getGwpAsanMode() {
         return gwpAsanMode;
     }
 
     @DataClass.Generated.Member
-    public int getMemtagMode() {
+    public @ApplicationInfo.MemtagMode int getMemtagMode() {
         return memtagMode;
     }
 
     @DataClass.Generated.Member
-    public @Nullable Boolean getNativeHeapZeroInit() {
+    public @ApplicationInfo.NativeHeapZeroInitialized int getNativeHeapZeroInitialized() {
-        return nativeHeapZeroInit;
+        return nativeHeapZeroInitialized;
     }
 
     @DataClass.Generated.Member
@@ -136,14 +144,11 @@ public class ParsedProcess implements Parcelable {
         // You can override field parcelling by defining methods like:
         // void parcelFieldName(Parcel dest, int flags) { ... }
 
-        byte flg = 0;
-        if (nativeHeapZeroInit != null) flg |= 0x10;
-        dest.writeByte(flg);
         dest.writeString(name);
         sParcellingForDeniedPermissions.parcel(deniedPermissions, dest, flags);
         dest.writeInt(gwpAsanMode);
         dest.writeInt(memtagMode);
-        if (nativeHeapZeroInit != null) dest.writeBoolean(nativeHeapZeroInit);
+        dest.writeInt(nativeHeapZeroInitialized);
     }
 
     @Override
@@ -157,12 +162,11 @@ public class ParsedProcess implements Parcelable {
         // You can override field unparcelling by defining methods like:
         // static FieldType unparcelFieldName(Parcel in) { ... }
 
-        byte flg = in.readByte();
         String _name = in.readString();
         Set<String> _deniedPermissions = sParcellingForDeniedPermissions.unparcel(in);
         int _gwpAsanMode = in.readInt();
         int _memtagMode = in.readInt();
-        Boolean _nativeHeapZeroInit = (flg & 0x10) == 0 ? null : (Boolean) in.readBoolean();
+        int _nativeHeapZeroInitialized = in.readInt();
 
         this.name = _name;
         com.android.internal.util.AnnotationValidations.validate(
@@ -171,8 +175,14 @@ public class ParsedProcess implements Parcelable {
         com.android.internal.util.AnnotationValidations.validate(
                 NonNull.class, null, deniedPermissions);
         this.gwpAsanMode = _gwpAsanMode;
+        com.android.internal.util.AnnotationValidations.validate(
+                ApplicationInfo.GwpAsanMode.class, null, gwpAsanMode);
         this.memtagMode = _memtagMode;
-        this.nativeHeapZeroInit = _nativeHeapZeroInit;
+        com.android.internal.util.AnnotationValidations.validate(
+                ApplicationInfo.MemtagMode.class, null, memtagMode);
+        this.nativeHeapZeroInitialized = _nativeHeapZeroInitialized;
+        com.android.internal.util.AnnotationValidations.validate(
+                ApplicationInfo.NativeHeapZeroInitialized.class, null, nativeHeapZeroInitialized);
 
         // onConstructed(); // You can define this method to get a callback
     }
@@ -192,10 +202,10 @@ public class ParsedProcess implements Parcelable {
     };
 
     @DataClass.Generated(
-            time = 1611615591258L,
+            time = 1615850515058L,
             codegenVersion = "1.0.22",
             sourceFile = "frameworks/base/core/java/android/content/pm/parsing/component/ParsedProcess.java",
-            inputSignatures = "protected @android.annotation.NonNull java.lang.String name\nprotected @android.annotation.NonNull @com.android.internal.util.DataClass.ParcelWith(com.android.internal.util.Parcelling.BuiltIn.ForInternedStringSet.class) java.util.Set<java.lang.String> deniedPermissions\nprotected  int gwpAsanMode\nprotected  int memtagMode\nprotected @android.annotation.Nullable java.lang.Boolean nativeHeapZeroInit\npublic  void addStateFrom(android.content.pm.parsing.component.ParsedProcess)\nclass ParsedProcess extends java.lang.Object implements [android.os.Parcelable]\n@com.android.internal.util.DataClass(genGetters=true, genSetters=false, genParcelable=true, genAidl=false, genBuilder=false)")
+            inputSignatures = "protected @android.annotation.NonNull java.lang.String name\nprotected @android.annotation.NonNull @com.android.internal.util.DataClass.ParcelWith(com.android.internal.util.Parcelling.BuiltIn.ForInternedStringSet.class) java.util.Set<java.lang.String> deniedPermissions\nprotected @android.content.pm.ApplicationInfo.GwpAsanMode int gwpAsanMode\nprotected @android.content.pm.ApplicationInfo.MemtagMode int memtagMode\nprotected @android.content.pm.ApplicationInfo.NativeHeapZeroInitialized int nativeHeapZeroInitialized\npublic  void addStateFrom(android.content.pm.parsing.component.ParsedProcess)\nclass ParsedProcess extends java.lang.Object implements [android.os.Parcelable]\n@com.android.internal.util.DataClass(genGetters=true, genSetters=false, genParcelable=true, genAidl=false, genBuilder=false)")
     @Deprecated
     private void __metadata() {}
 

core/java/android/content/pm/parsing/component/ParsedProcessUtils.java

@@ -17,6 +17,7 @@
 package android.content.pm.parsing.component;
 
 import android.annotation.NonNull;
+import android.content.pm.ApplicationInfo;
 import android.content.pm.parsing.ParsingPackage;
 import android.content.pm.parsing.ParsingUtils;
 import android.content.pm.parsing.result.ParseInput;
@@ -106,9 +107,11 @@ public class ParsedProcessUtils {
 
             proc.gwpAsanMode = sa.getInt(R.styleable.AndroidManifestProcess_gwpAsanMode, -1);
             proc.memtagMode = sa.getInt(R.styleable.AndroidManifestProcess_memtagMode, -1);
-            if (sa.hasValue(R.styleable.AndroidManifestProcess_nativeHeapZeroInit)) {
+            if (sa.hasValue(R.styleable.AndroidManifestProcess_nativeHeapZeroInitialized)) {
-                proc.nativeHeapZeroInit =
+                Boolean v = sa.getBoolean(
-                        sa.getBoolean(R.styleable.AndroidManifestProcess_nativeHeapZeroInit, false);
+                        R.styleable.AndroidManifestProcess_nativeHeapZeroInitialized, false);
+                proc.nativeHeapZeroInitialized =
+                        v ? ApplicationInfo.ZEROINIT_ENABLED : ApplicationInfo.ZEROINIT_DISABLED;
             }
         } finally {
             sa.recycle();

core/res/res/values/attrs_manifest.xml

@@ -1560,6 +1560,20 @@
        <enum name="always" value="1" />
     </attr>
 
+    <!-- Enable hardware memory tagging (ARM MTE) in this process.
+         When enabled, heap memory bugs like use-after-free and buffer overlow
+         are detected and result in an immediate ("sync" mode) or delayed ("async"
+         mode) crash instead of a silent memory corruption. Sync mode, while slower,
+         provides enhanced bug reports including stack traces at the time of allocation
+         and deallocation of memory, similar to AddressSanitizer.
+
+         See the <a href="https://community.arm.com/developer/ip-products/processors/b/processors-ip-blog/posts/enhancing-memory-safety">ARM announcement</a>
+         for more details.
+
+         <p>This attribute can be applied to a
+         {@link android.R.styleable#AndroidManifestProcess process} tag, or to an
+         {@link android.R.styleable#AndroidManifestApplication application} tag (to supply
+         a default setting for all application components). -->
     <attr name="memtagMode">
        <enum name="default" value="-1" />
        <enum name="off" value="0" />
@@ -1836,7 +1850,9 @@
 
         <attr name="memtagMode" />
 
-        <attr name="nativeHeapZeroInit" format="boolean" />
+        <!-- If {@code true} enables automatic zero initialization of all native heap
+             allocations. -->
+        <attr name="nativeHeapZeroInitialized" format="boolean" />
 
         <!-- @hide no longer used, kept to preserve padding -->
         <attr name="allowAutoRevokePermissionsExemption" format="boolean" />
@@ -2362,7 +2378,7 @@
         <attr name="process" />
         <attr name="gwpAsanMode" />
         <attr name="memtagMode" />
-        <attr name="nativeHeapZeroInit" />
+        <attr name="nativeHeapZeroInitialized" />
     </declare-styleable>
 
     <!-- The <code>deny-permission</code> tag specifies that a permission is to be denied

core/res/res/values/public.xml

@@ -3047,7 +3047,7 @@
     <!-- attribute definitions go here -->
     <public name="requireDeviceScreenOn" />
     <public name="memtagMode" />
-    <public name="nativeHeapZeroInit" />
+    <public name="nativeHeapZeroInitialized" />
   </public-group>
 
   <public-group type="drawable" first-id="0x010800b5">

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

@@ -1722,12 +1722,13 @@ public final class ProcessList {
 
     private boolean enableNativeHeapZeroInit(ProcessRecord app) {
         // Look at the process attribute first.
-        if (app.processInfo != null && app.processInfo.nativeHeapZeroInit != null) {
+        if (app.processInfo != null
-            return app.processInfo.nativeHeapZeroInit;
+                && app.processInfo.nativeHeapZeroInitialized != ApplicationInfo.ZEROINIT_DEFAULT) {
+            return app.processInfo.nativeHeapZeroInitialized == ApplicationInfo.ZEROINIT_ENABLED;
         }
         // Then at the application attribute.
-        if (app.info.isNativeHeapZeroInit() != null) {
+        if (app.info.getNativeHeapZeroInitialized() != ApplicationInfo.ZEROINIT_DEFAULT) {
-            return app.info.isNativeHeapZeroInit();
+            return app.info.getNativeHeapZeroInitialized() == ApplicationInfo.ZEROINIT_ENABLED;
         }
         // Compat feature last.
         if (mPlatformCompat.isChangeEnabled(NATIVE_HEAP_ZERO_INIT, app.info)) {

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

@@ -650,7 +650,7 @@ class ProcessRecord implements WindowProcessListener {
                 if (procInfo != null && procInfo.deniedPermissions == null
                         && procInfo.gwpAsanMode == ApplicationInfo.GWP_ASAN_DEFAULT
                         && procInfo.memtagMode == ApplicationInfo.MEMTAG_DEFAULT
-                        && procInfo.nativeHeapZeroInit == null) {
+                        && procInfo.nativeHeapZeroInitialized == ApplicationInfo.ZEROINIT_DEFAULT) {
                     // If this process hasn't asked for permissions to be denied, or for a
                     // non-default GwpAsan mode, or any other non-default setting, then we don't
                     // care about it.

services/core/java/com/android/server/pm/parsing/PackageInfoUtils.java

@@ -400,7 +400,7 @@ public class PackageInfoUtils {
             retProcs.put(proc.getName(),
                     new ProcessInfo(proc.getName(), new ArraySet<>(proc.getDeniedPermissions()),
                             proc.getGwpAsanMode(), proc.getMemtagMode(),
-                            proc.getNativeHeapZeroInit()));
+                            proc.getNativeHeapZeroInitialized()));
         }
         return retProcs;
     }