am d50a458b: Merge change 2351 into donut

Merge commit 'd50a458bb291801ab9fdc119301bc7b84b42a6e3'

* commit 'd50a458bb291801ab9fdc119301bc7b84b42a6e3':
  Fix a major bug in Bundle when unparcelling from AIDL.

3 files changed, 69 insertions, 75 deletions

diff --git a/core/java/android/os/Bundle.java b/core/java/android/os/Bundle.java
index b669fa2..a91655f 100644
--- a/core/java/android/os/Bundle.java
+++ b/core/java/android/os/Bundle.java
@@ -78,6 +78,10 @@ public final class Bundle implements Parcelable, Cloneable {
         readFromParcel(parcelledData);
     }
 
+    /* package */ Bundle(Parcel parcelledData, int length) {
+        readFromParcelInner(parcelledData, length);
+    }
+
     /**
      * Constructs a new, empty Bundle that uses a specific ClassLoader for
      * instantiating Parcelable and Serializable objects.
@@ -155,13 +159,14 @@ public final class Bundle implements Parcelable, Cloneable {
             return;
         }
 
-        mParcelledData.setDataPosition(0);
-        Bundle b = mParcelledData.readBundleUnpacked(mClassLoader);
-        mMap = b.mMap;
-
-        mHasFds = mParcelledData.hasFileDescriptors();
-        mFdsKnown = true;
-        
+        int N = mParcelledData.readInt();
+        if (N < 0) {
+            return;
+        }
+        if (mMap == null) {
+            mMap = new HashMap<String, Object>();
+        }
+        mParcelledData.readMapInternal(mMap, N, mClassLoader);
         mParcelledData.recycle();
         mParcelledData = null;
     }
@@ -1427,7 +1432,25 @@ public final class Bundle implements Parcelable, Cloneable {
      * @param parcel The parcel to copy this bundle to.
      */
     public void writeToParcel(Parcel parcel, int flags) {
-        parcel.writeBundle(this);
+        if (mParcelledData != null) {
+            int length = mParcelledData.dataSize();
+            parcel.writeInt(length);
+            parcel.writeInt(0x4C444E42); // 'B' 'N' 'D' 'L'
+            parcel.appendFrom(mParcelledData, 0, length);
+        } else {
+            parcel.writeInt(-1); // dummy, will hold length
+            parcel.writeInt(0x4C444E42); // 'B' 'N' 'D' 'L'
+
+            int oldPos = parcel.dataPosition();
+            parcel.writeMapInternal(mMap);
+            int newPos = parcel.dataPosition();
+
+            // Backpatch length
+            parcel.setDataPosition(oldPos - 8);
+            int length = newPos - oldPos;
+            parcel.writeInt(length);
+            parcel.setDataPosition(newPos);
+        }
     }
 
     /**
@@ -1436,8 +1459,33 @@ public final class Bundle implements Parcelable, Cloneable {
      * @param parcel The parcel to overwrite this bundle from.
      */
     public void readFromParcel(Parcel parcel) {
-        mParcelledData = parcel;
-        mHasFds = mParcelledData.hasFileDescriptors();
+        int length = parcel.readInt();
+        if (length < 0) {
+            throw new RuntimeException("Bad length in parcel: " + length);
+        }
+        readFromParcelInner(parcel, length);
+    }
+
+    void readFromParcelInner(Parcel parcel, int length) {
+        int magic = parcel.readInt();
+        if (magic != 0x4C444E42) {
+            //noinspection ThrowableInstanceNeverThrown
+            String st = Log.getStackTraceString(new RuntimeException());
+            Log.e("Bundle", "readBundle: bad magic number");
+            Log.e("Bundle", "readBundle: trace = " + st);
+        }
+
+        // Advance within this Parcel
+        int offset = parcel.dataPosition();
+        parcel.setDataPosition(offset + length);
+
+        Parcel p = Parcel.obtain();
+        p.setDataPosition(0);
+        p.appendFrom(parcel, offset, length);
+        p.setDataPosition(0);
+        
+        mParcelledData = p;
+        mHasFds = p.hasFileDescriptors();
         mFdsKnown = true;
     }
 
diff --git a/core/java/android/os/Parcel.java b/core/java/android/os/Parcel.java
index 9a71f6e..6cfccee 100644
--- a/core/java/android/os/Parcel.java
+++ b/core/java/android/os/Parcel.java
@@ -457,7 +457,7 @@ public final class Parcel {
      * Flatten a Map into the parcel at the current dataPosition(),
      * growing dataCapacity() if needed.  The Map keys must be String objects.
      */
-    private void writeMapInternal(Map<String,Object> val) {
+    /* package */ void writeMapInternal(Map<String,Object> val) {
         if (val == null) {
             writeInt(-1);
             return;
@@ -480,23 +480,7 @@ public final class Parcel {
             return;
         }
 
-        if (val.mParcelledData != null) {
-            int length = val.mParcelledData.dataSize();
-            appendFrom(val.mParcelledData, 0, length);
-        } else {
-            writeInt(-1); // dummy, will hold length
-            int oldPos = dataPosition();
-            writeInt(0x4C444E42); // 'B' 'N' 'D' 'L'
-
-            writeMapInternal(val.mMap);
-            int newPos = dataPosition();
-
-            // Backpatch length
-            setDataPosition(oldPos - 4);
-            int length = newPos - oldPos;
-            writeInt(length);
-            setDataPosition(newPos);
-        }
+        val.writeToParcel(this, 0);
     }
 
     /**
@@ -1352,27 +1336,12 @@ public final class Parcel {
      * Returns null if the previously written Bundle object was null.
      */
     public final Bundle readBundle(ClassLoader loader) {
-        int offset = dataPosition();
         int length = readInt();
         if (length < 0) {
             return null;
         }
-        int magic = readInt();
-        if (magic != 0x4C444E42) {
-            //noinspection ThrowableInstanceNeverThrown
-            String st = Log.getStackTraceString(new RuntimeException());
-            Log.e("Bundle", "readBundle: bad magic number");
-            Log.e("Bundle", "readBundle: trace = " + st);
-        }
-
-        // Advance within this Parcel
-        setDataPosition(offset + length + 4);
-
-        Parcel p = new Parcel(0);
-        p.setDataPosition(0);
-        p.appendFrom(this, offset, length + 4);
-        p.setDataPosition(0);
-        final Bundle bundle = new Bundle(p);
+        
+        final Bundle bundle = new Bundle(this, length);
         if (loader != null) {
             bundle.setClassLoader(loader);
         }
@@ -1380,33 +1349,6 @@ public final class Parcel {
     }
 
     /**
-     * Read and return a new Bundle object from the parcel at the current
-     * dataPosition().  Returns null if the previously written Bundle object was
-     * null.  The returned bundle will have its contents fully unpacked using
-     * the given ClassLoader.
-     */
-    /* package */ Bundle readBundleUnpacked(ClassLoader loader) {
-        int length = readInt();
-        if (length == -1) {
-            return null;
-        }
-        int magic = readInt();
-        if (magic != 0x4C444E42) {
-            //noinspection ThrowableInstanceNeverThrown
-            String st = Log.getStackTraceString(new RuntimeException());
-            Log.e("Bundle", "readBundleUnpacked: bad magic number");
-            Log.e("Bundle", "readBundleUnpacked: trace = " + st);
-        }
-        Bundle m = new Bundle(loader);
-        int N = readInt();
-        if (N < 0) {
-            return null;
-        }
-        readMapInternal(m.mMap, N, loader);
-        return m;
-    }
-
-    /**
      * Read and return a byte[] object from the parcel.
      */
     public final native byte[] createByteArray();
@@ -1998,7 +1940,7 @@ public final class Parcel {
     private native void init(int obj);
     private native void destroy();
 
-    private void readMapInternal(Map outVal, int N,
+    /* package */ void readMapInternal(Map outVal, int N,
         ClassLoader loader) {
         while (N > 0) {
             Object key = readValue(loader);
diff --git a/libs/binder/Parcel.cpp b/libs/binder/Parcel.cpp
index 0819c29..3747de6 100644
--- a/libs/binder/Parcel.cpp
+++ b/libs/binder/Parcel.cpp
@@ -409,12 +409,16 @@ status_t Parcel::appendFrom(Parcel *parcel, size_t offset, size_t len)
             mObjects[idx++] = off;
             mObjectsSize++;
 
-            const flat_binder_object* flat
+            flat_binder_object* flat
                 = reinterpret_cast<flat_binder_object*>(mData + off);
             acquire_object(proc, *flat, this);
 
-            // take note if the object is a file descriptor
             if (flat->type == BINDER_TYPE_FD) {
+                // If this is a file descriptor, we need to dup it so the
+                // new Parcel now owns its own fd, and can declare that we
+                // officially know we have fds.
+                flat->handle = dup(flat->handle);
+                flat->cookie = (void*)1;
                 mHasFds = mFdsKnown = true;
             }
         }