3 files changed, 13 insertions, 0 deletions
diff --git a/core/java/android/app/ActivityManagerInternal.java b/core/java/android/app/ActivityManagerInternal.java
index 40eb799..8e7c607 100644
--- a/core/java/android/app/ActivityManagerInternal.java
+++ b/core/java/android/app/ActivityManagerInternal.java
@@ -25,6 +25,12 @@ import android.content.ComponentName;
  * @hide Only for use within the system server.
  */
 public abstract class ActivityManagerInternal {
+
+    /**
+     * Verify that calling app has access to the given provider.
+     */
+    public abstract String checkContentProviderAccess(String authority, int userId);
+
     // Called by the power manager.
     public abstract void onWakefulnessChanged(int wakefulness);
 
diff --git a/core/java/android/provider/Downloads.java b/core/java/android/provider/Downloads.java
index 961eb19..cfdb95d 100644
--- a/core/java/android/provider/Downloads.java
+++ b/core/java/android/provider/Downloads.java
@@ -41,6 +41,8 @@ public final class Downloads {
     public static final class Impl implements BaseColumns {
         private Impl() {}
 
+        public static final String AUTHORITY = "downloads";
+
         /**
          * The permission to access the download manager
          */
diff --git a/core/java/android/service/persistentdata/PersistentDataBlockManager.java b/core/java/android/service/persistentdata/PersistentDataBlockManager.java
index 0ffdf68..10ffe84 100644
--- a/core/java/android/service/persistentdata/PersistentDataBlockManager.java
+++ b/core/java/android/service/persistentdata/PersistentDataBlockManager.java
@@ -54,6 +54,9 @@ public class PersistentDataBlockManager {
      * Returns the number of bytes written or -1 on error. If the block is too big
      * to fit on the partition, returns -MAX_BLOCK_SIZE.
      *
+     * {@link #wipe} will block any further {@link #write} operation until reboot,
+     * in which case -1 will be returned.
+     *
      * @param data the data to write
      */
     public int write(byte[] data) {
@@ -108,6 +111,8 @@ public class PersistentDataBlockManager {
     /**
      * Zeroes the previously written block in its entirety. Calling this method
      * will erase all data written to the persistent data partition.
+     * It will also prevent any further {@link #write} operation until reboot,
+     * in order to prevent a potential race condition. See b/30352311.
      */
     public void wipe() {
         try {