Isolated FS for media devices.

webkit/fileapi/isolated_mount_point_provider.cc

Index: webkit/fileapi/isolated_mount_point_provider.cc
diff --git a/webkit/fileapi/isolated_mount_point_provider.cc b/webkit/fileapi/isolated_mount_point_provider.cc
index 35cbcf37e4eecf17250468d64bddaa685911b719..e7ed8ba8d1cf4dd82d93eee4e9b3b5a02faf4618 100644
--- a/webkit/fileapi/isolated_mount_point_provider.cc
+++ b/webkit/fileapi/isolated_mount_point_provider.cc
@@ -20,6 +20,8 @@
 #include "webkit/fileapi/file_system_util.h"
 #include "webkit/fileapi/isolated_context.h"
 #include "webkit/fileapi/isolated_file_util.h"
+#include "webkit/fileapi/media_device_map_service.h"
+#include "webkit/fileapi/media_file_util.h"
 #include "webkit/fileapi/local_file_stream_writer.h"
 #include "webkit/fileapi/native_file_util.h"
 
@@ -41,10 +43,24 @@ FilePath GetPathFromURL(const FileSystemURL& url) {
   return path;
 }
 
+bool IsMediaFileSystemURL(const FileSystemURL& url) {
+// TODO(kmadhusu): Query the SystemMonitor for the URL device type.
+#if defined(OS_WIN)
+  FilePath temp = GetPathFromURL(url);
+  if (temp.empty())
+    return false;
+  FilePath::StringType device_name(temp.value());
+  return (!(device_name.substr(0,4)).compare(L"\\\\?\\"));
+#else
+  return true;
+#endif
+}
+
 }  // namespace
 
 IsolatedMountPointProvider::IsolatedMountPointProvider()
-    : isolated_file_util_(new IsolatedFileUtil()) {
+    : isolated_file_util_(new IsolatedFileUtil()),
+      media_file_util_(new MediaFileUtil()) {
 }
 
 IsolatedMountPointProvider::~IsolatedMountPointProvider() {
@@ -92,7 +108,10 @@ bool IsolatedMountPointProvider::IsRestrictedFileName(
   return false;
 }
 
-FileSystemFileUtil* IsolatedMountPointProvider::GetFileUtil() {
+FileSystemFileUtil* IsolatedMountPointProvider::GetFileUtil(
+    const FileSystemURL& url) {
+  if (IsMediaFileSystemURL(url))
+    return media_file_util_.get();
   return isolated_file_util_.get();
 }
 
@@ -109,6 +128,13 @@ FileSystemOperationInterface*
 IsolatedMountPointProvider::CreateFileSystemOperation(
     const FileSystemURL& url,
     FileSystemContext* context) const {
+  if (IsMediaFileSystemURL(url)) {
+    FilePath actual_path = GetPathFromURL(url);
+    if (actual_path.empty())
+      return false;
+    FilePath::StringType device_name(actual_path.value());
+    MediaDeviceMapService::GetInstance()->AddMediaDevice(device_name);
+  }
   return new FileSystemOperation(context);
 }