diff --git a/libs/androidfw/Asset.cpp b/libs/androidfw/Asset.cpp
index 4fbe4a3..cd30c18 100644
--- a/libs/androidfw/Asset.cpp
+++ b/libs/androidfw/Asset.cpp
@@ -298,18 +298,34 @@
 /*
  * Create a new Asset from a memory mapping.
  */
-/*static*/ std::unique_ptr<Asset> Asset::createFromUncompressedMap(incfs::IncFsFileMap&& dataMap,
-                                                                   AccessMode mode,
-                                                                   base::unique_fd fd)
+/*static*/ Asset* Asset::createFromUncompressedMap(FileMap* dataMap, AccessMode mode)
 {
-    auto pAsset = util::make_unique<_FileAsset>();
+    _FileAsset* pAsset;
+    status_t result;
 
-    status_t result = pAsset->openChunk(std::move(dataMap), std::move(fd));
+    pAsset = new _FileAsset;
+    result = pAsset->openChunk(dataMap, base::unique_fd(-1));
+    if (result != NO_ERROR) {
+        delete pAsset;
+        return NULL;
+    }
+
+    pAsset->mAccessMode = mode;
+    return pAsset;
+}
+
+/*static*/ std::unique_ptr<Asset> Asset::createFromUncompressedMap(std::unique_ptr<FileMap> dataMap,
+    base::unique_fd fd, AccessMode mode)
+{
+    std::unique_ptr<_FileAsset> pAsset = util::make_unique<_FileAsset>();
+
+    status_t result = pAsset->openChunk(dataMap.get(), std::move(fd));
     if (result != NO_ERROR) {
         return NULL;
     }
 
     // We succeeded, so relinquish control of dataMap
+    (void) dataMap.release();
     pAsset->mAccessMode = mode;
     return std::move(pAsset);
 }
@@ -317,18 +333,35 @@
 /*
  * Create a new Asset from compressed data in a memory mapping.
  */
-/*static*/ std::unique_ptr<Asset> Asset::createFromCompressedMap(incfs::IncFsFileMap&& dataMap,
-                                                                 size_t uncompressedLen,
-                                                                 AccessMode mode)
+/*static*/ Asset* Asset::createFromCompressedMap(FileMap* dataMap,
+    size_t uncompressedLen, AccessMode mode)
 {
-  auto pAsset = util::make_unique<_CompressedAsset>();
+    _CompressedAsset* pAsset;
+    status_t result;
 
-  status_t result = pAsset->openChunk(std::move(dataMap), uncompressedLen);
+    pAsset = new _CompressedAsset;
+    result = pAsset->openChunk(dataMap, uncompressedLen);
+    if (result != NO_ERROR) {
+        delete pAsset;
+        return NULL;
+    }
+
+    pAsset->mAccessMode = mode;
+    return pAsset;
+}
+
+/*static*/ std::unique_ptr<Asset> Asset::createFromCompressedMap(std::unique_ptr<FileMap> dataMap,
+    size_t uncompressedLen, AccessMode mode)
+{
+  std::unique_ptr<_CompressedAsset> pAsset = util::make_unique<_CompressedAsset>();
+
+  status_t result = pAsset->openChunk(dataMap.get(), uncompressedLen);
   if (result != NO_ERROR) {
       return NULL;
   }
 
   // We succeeded, so relinquish control of dataMap
+  (void) dataMap.release();
   pAsset->mAccessMode = mode;
   return std::move(pAsset);
 }
@@ -381,7 +414,7 @@
  * Constructor.
  */
 _FileAsset::_FileAsset(void)
-    : mStart(0), mLength(0), mOffset(0), mFp(NULL), mFileName(NULL), mFd(-1), mBuf(NULL)
+    : mStart(0), mLength(0), mOffset(0), mFp(NULL), mFileName(NULL), mFd(-1), mMap(NULL), mBuf(NULL)
 {
     // Register the Asset with the global list here after it is fully constructed and its
     // vtable pointer points to this concrete type. b/31113965
@@ -408,7 +441,7 @@
 status_t _FileAsset::openChunk(const char* fileName, int fd, off64_t offset, size_t length)
 {
     assert(mFp == NULL);    // no reopen
-    assert(!mMap.has_value());
+    assert(mMap == NULL);
     assert(fd >= 0);
     assert(offset >= 0);
 
@@ -451,15 +484,15 @@
 /*
  * Create the chunk from the map.
  */
-status_t _FileAsset::openChunk(incfs::IncFsFileMap&& dataMap, base::unique_fd fd)
+status_t _FileAsset::openChunk(FileMap* dataMap, base::unique_fd fd)
 {
     assert(mFp == NULL);    // no reopen
-    assert(!mMap.has_value());
+    assert(mMap == NULL);
     assert(dataMap != NULL);
 
-    mMap = std::move(dataMap);
+    mMap = dataMap;
     mStart = -1;            // not used
-    mLength = mMap->length();
+    mLength = dataMap->getDataLength();
     mFd = std::move(fd);
     assert(mOffset == 0);
 
@@ -495,15 +528,10 @@
     if (!count)
         return 0;
 
-    if (mMap.has_value()) {
+    if (mMap != NULL) {
         /* copy from mapped area */
         //printf("map read\n");
-        const auto readPos = mMap->data().offset(mOffset).convert<char>();
-        if (!readPos.verify(count)) {
-            return -1;
-        }
-
-        memcpy(buf, readPos.unsafe_ptr(), count);
+        memcpy(buf, (char*)mMap->getDataPtr() + mOffset, count);
         actual = count;
     } else if (mBuf != NULL) {
         /* copy from buffer */
@@ -566,6 +594,10 @@
  */
 void _FileAsset::close(void)
 {
+    if (mMap != NULL) {
+        delete mMap;
+        mMap = NULL;
+    }
     if (mBuf != NULL) {
         delete[] mBuf;
         mBuf = NULL;
@@ -592,21 +624,16 @@
  * level and we'd be using a different object, but we didn't, so we
  * deal with it here.
  */
-const void* _FileAsset::getBuffer(bool aligned)
-{
-    return getIncFsBuffer(aligned).unsafe_ptr();
-}
-
-incfs::map_ptr<void> _FileAsset::getIncFsBuffer(bool aligned)
+const void* _FileAsset::getBuffer(bool wordAligned)
 {
     /* subsequent requests just use what we did previously */
     if (mBuf != NULL)
         return mBuf;
-    if (mMap.has_value()) {
-        if (!aligned) {
-            return mMap->data();
+    if (mMap != NULL) {
+        if (!wordAligned) {
+            return  mMap->getDataPtr();
         }
-        return ensureAlignment(*mMap);
+        return ensureAlignment(mMap);
     }
 
     assert(mFp != NULL);
@@ -644,44 +671,47 @@
         mBuf = buf;
         return mBuf;
     } else {
-        incfs::IncFsFileMap map;
-        if (!map.Create(fileno(mFp), mStart, mLength, NULL /* file_name */ )) {
+        FileMap* map;
+
+        map = new FileMap;
+        if (!map->create(NULL, fileno(mFp), mStart, mLength, true)) {
+            delete map;
             return NULL;
         }
 
         ALOGV(" getBuffer: mapped\n");
 
-        mMap = std::move(map);
-        if (!aligned) {
-            return mMap->data();
+        mMap = map;
+        if (!wordAligned) {
+            return  mMap->getDataPtr();
         }
-        return ensureAlignment(*mMap);
+        return ensureAlignment(mMap);
     }
 }
 
 int _FileAsset::openFileDescriptor(off64_t* outStart, off64_t* outLength) const
 {
-    if (mMap.has_value()) {
+    if (mMap != NULL) {
         if (mFd.ok()) {
-            *outStart = mMap->offset();
-            *outLength = mMap->length();
-            const int fd = dup(mFd);
-            if (fd < 0) {
-                ALOGE("Unable to dup fd (%d).", mFd.get());
-                return -1;
-            }
-            lseek64(fd, 0, SEEK_SET);
-            return fd;
+          *outStart = mMap->getDataOffset();
+          *outLength = mMap->getDataLength();
+          const int fd = dup(mFd);
+          if (fd < 0) {
+            ALOGE("Unable to dup fd (%d).", mFd.get());
+            return -1;
+          }
+          lseek64(fd, 0, SEEK_SET);
+          return fd;
         }
-        const char* fname = mMap->file_name();
+        const char* fname = mMap->getFileName();
         if (fname == NULL) {
             fname = mFileName;
         }
         if (fname == NULL) {
             return -1;
         }
-        *outStart = mMap->offset();
-        *outLength = mMap->length();
+        *outStart = mMap->getDataOffset();
+        *outLength = mMap->getDataLength();
         return open(fname, O_RDONLY | O_BINARY);
     }
     if (mFileName == NULL) {
@@ -692,21 +722,16 @@
     return open(mFileName, O_RDONLY | O_BINARY);
 }
 
-incfs::map_ptr<void> _FileAsset::ensureAlignment(const incfs::IncFsFileMap& map)
+const void* _FileAsset::ensureAlignment(FileMap* map)
 {
-    const auto data = map.data();
-    if (util::IsFourByteAligned(data)) {
+    void* data = map->getDataPtr();
+    if ((((size_t)data)&0x3) == 0) {
         // We can return this directly if it is aligned on a word
         // boundary.
         ALOGV("Returning aligned FileAsset %p (%s).", this,
                 getAssetSource());
         return data;
     }
-
-     if (!data.convert<uint8_t>().verify(mLength)) {
-        return NULL;
-    }
-
     // If not aligned on a word boundary, then we need to copy it into
     // our own buffer.
     ALOGV("Copying FileAsset %p (%s) to buffer size %d to make it aligned.", this,
@@ -716,8 +741,7 @@
         ALOGE("alloc of %ld bytes failed\n", (long) mLength);
         return NULL;
     }
-
-    memcpy(buf, data.unsafe_ptr(), mLength);
+    memcpy(buf, data, mLength);
     mBuf = buf;
     return buf;
 }
@@ -733,7 +757,7 @@
  */
 _CompressedAsset::_CompressedAsset(void)
     : mStart(0), mCompressedLen(0), mUncompressedLen(0), mOffset(0),
-      mFd(-1), mZipInflater(NULL), mBuf(NULL)
+      mMap(NULL), mFd(-1), mZipInflater(NULL), mBuf(NULL)
 {
     // Register the Asset with the global list here after it is fully constructed and its
     // vtable pointer points to this concrete type. b/31113965
@@ -762,7 +786,7 @@
     int compressionMethod, size_t uncompressedLen, size_t compressedLen)
 {
     assert(mFd < 0);        // no re-open
-    assert(!mMap.has_value());
+    assert(mMap == NULL);
     assert(fd >= 0);
     assert(offset >= 0);
     assert(compressedLen > 0);
@@ -791,20 +815,20 @@
  *
  * Nothing is expanded until the first read call.
  */
-status_t _CompressedAsset::openChunk(incfs::IncFsFileMap&& dataMap, size_t uncompressedLen)
+status_t _CompressedAsset::openChunk(FileMap* dataMap, size_t uncompressedLen)
 {
     assert(mFd < 0);        // no re-open
-    assert(!mMap.has_value());
+    assert(mMap == NULL);
     assert(dataMap != NULL);
 
-    mMap = std::move(dataMap);
+    mMap = dataMap;
     mStart = -1;        // not used
-    mCompressedLen = mMap->length();
+    mCompressedLen = dataMap->getDataLength();
     mUncompressedLen = uncompressedLen;
     assert(mOffset == 0);
 
     if (uncompressedLen > StreamingZipInflater::OUTPUT_CHUNK_SIZE) {
-        mZipInflater = new StreamingZipInflater(&(*mMap), uncompressedLen);
+        mZipInflater = new StreamingZipInflater(dataMap, uncompressedLen);
     }
     return NO_ERROR;
 }
@@ -877,6 +901,11 @@
  */
 void _CompressedAsset::close(void)
 {
+    if (mMap != NULL) {
+        delete mMap;
+        mMap = NULL;
+    }
+
     delete[] mBuf;
     mBuf = NULL;
 
@@ -911,8 +940,8 @@
         goto bail;
     }
 
-    if (mMap.has_value()) {
-        if (!ZipUtils::inflateToBuffer(mMap->data(), buf,
+    if (mMap != NULL) {
+        if (!ZipUtils::inflateToBuffer(mMap->getDataPtr(), buf,
                 mUncompressedLen, mCompressedLen))
             goto bail;
     } else {
@@ -947,6 +976,3 @@
     return mBuf;
 }
 
-incfs::map_ptr<void> _CompressedAsset::getIncFsBuffer(bool aligned) {
-    return incfs::map_ptr<void>(getBuffer(aligned));
-}