diff --git a/include/utils/BackupHelpers.h b/include/utils/BackupHelpers.h
index f60f4ea..3ca8ad2 100644
--- a/include/utils/BackupHelpers.h
+++ b/include/utils/BackupHelpers.h
@@ -23,30 +23,15 @@
 namespace android {
 
 enum {
-    BACKUP_HEADER_APP_V1 = 0x31707041, // App1 (little endian)
     BACKUP_HEADER_ENTITY_V1 = 0x61746144, // Data (little endian)
-    BACKUP_FOOTER_APP_V1 = 0x746f6f46, // Foot (little endian)
 };
 
-// the sizes of all of these match.
-typedef struct {
-    int type; // == BACKUP_HEADER_APP_V1
-    int packageLen; // length of the name of the package that follows, not including the null.
-    int cookie;
-} app_header_v1;
-
 typedef struct {
     int type; // BACKUP_HEADER_ENTITY_V1
     int keyLen; // length of the key name, not including the null terminator
     int dataSize; // size of the data, not including the padding, -1 means delete
 } entity_header_v1;
 
-typedef struct {
-    int type; // BACKUP_FOOTER_APP_V1
-    int entityCount; // the number of entities that were written
-    int cookie;
-} app_footer_v1;
-
 
 /**
  * Writes the data.
@@ -61,13 +46,9 @@
     // does not close fd
     ~BackupDataWriter();
 
-    status_t WriteAppHeader(const String8& packageName, int cookie);
-
     status_t WriteEntityHeader(const String8& key, size_t dataSize);
     status_t WriteEntityData(const void* data, size_t size);
 
-    status_t WriteAppFooter(int cookie);
-
 private:
     explicit BackupDataWriter();
     status_t write_padding_for(int n);
@@ -92,28 +73,26 @@
     ~BackupDataReader();
 
     status_t Status();
-    status_t ReadNextHeader(int* type = NULL);
+    status_t ReadNextHeader(bool* done, int* type);
 
-    status_t ReadAppHeader(String8* packageName, int* cookie);
     bool HasEntities();
     status_t ReadEntityHeader(String8* key, size_t* dataSize);
     status_t SkipEntityData(); // must be called with the pointer at the begining of the data.
     status_t ReadEntityData(void* data, size_t size);
-    status_t ReadAppFooter(int* cookie);
 
 private:
     explicit BackupDataReader();
     status_t skip_padding();
     
     int m_fd;
+    bool m_done;
     status_t m_status;
     ssize_t m_pos;
+    ssize_t m_dataEndPos;
     int m_entityCount;
     union {
         int type;
-        app_header_v1 app;
         entity_header_v1 entity;
-        app_footer_v1 footer;
     } m_header;
 };