Candidate volumes for packages, fix symlink.

Add API to determine the possible candidate volumes that a package
can be moved to.  For example, it currently knows that we need to
move ASEC-based apps through internal storage before migrating them
to a private volume.

Comparator for consistent VolumeInfo ordering when displayed in UI.

Fix native library symlink to be volume UUID aware.

Bug: 19993667
Change-Id: I68d5fac5f0f776ac1c7dd15e7a984bfe2704f3f7

2 files changed, 19 insertions, 0 deletions

diff --git a/core/java/android/content/pm/ApplicationInfo.java b/core/java/android/content/pm/ApplicationInfo.java
index 5bdb7bb..caf069f 100644
--- a/core/java/android/content/pm/ApplicationInfo.java
+++ b/core/java/android/content/pm/ApplicationInfo.java
@@ -21,6 +21,7 @@ import android.content.res.Resources;
 import android.graphics.drawable.Drawable;
 import android.os.Parcel;
 import android.os.Parcelable;
+import android.text.TextUtils;
 import android.util.Printer;
 
 import com.android.internal.util.ArrayUtils;
@@ -937,6 +938,17 @@ public class ApplicationInfo extends PackageItemInfo implements Parcelable {
         return (flags & ApplicationInfo.FLAG_UPDATED_SYSTEM_APP) != 0;
     }
 
+    /** @hide */
+    public boolean isInternal() {
+        return (flags & ApplicationInfo.FLAG_EXTERNAL_STORAGE) == 0;
+    }
+
+    /** @hide */
+    public boolean isExternalAsec() {
+        return TextUtils.isEmpty(volumeUuid)
+                && (flags & ApplicationInfo.FLAG_EXTERNAL_STORAGE) != 0;
+    }
+
     /**
      * @hide
      */
diff --git a/core/java/android/content/pm/PackageManager.java b/core/java/android/content/pm/PackageManager.java
index 8844ea8..a128872 100644
--- a/core/java/android/content/pm/PackageManager.java
+++ b/core/java/android/content/pm/PackageManager.java
@@ -20,6 +20,7 @@ import android.annotation.CheckResult;
 import android.annotation.DrawableRes;
 import android.annotation.IntDef;
 import android.annotation.NonNull;
+import android.annotation.Nullable;
 import android.annotation.SdkConstant;
 import android.annotation.SdkConstant.SdkConstantType;
 import android.annotation.StringRes;
@@ -4162,6 +4163,12 @@ public abstract class PackageManager {
     public abstract void movePackageAndData(String packageName, String volumeUuid,
             IPackageMoveObserver observer);
 
+    /** {@hide} */
+    public abstract @Nullable VolumeInfo getApplicationCurrentVolume(ApplicationInfo app);
+
+    /** {@hide} */
+    public abstract @NonNull List<VolumeInfo> getApplicationCandidateVolumes(ApplicationInfo app);
+
     /**
      * Returns the device identity that verifiers can use to associate their scheme to a particular
      * device. This should not be used by anything other than a package verifier.