diff -r 000000000000 -r 6474c204b198 dom/filesystem/CreateDirectoryTask.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/filesystem/CreateDirectoryTask.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,141 @@
+/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 40 -*- */
+/* vim: set ts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "CreateDirectoryTask.h"
+
+#include "DOMError.h"
+#include "mozilla/dom/Directory.h"
+#include "mozilla/dom/FileSystemBase.h"
+#include "mozilla/dom/FileSystemUtils.h"
+#include "mozilla/dom/Promise.h"
+#include "nsIFile.h"
+#include "nsStringGlue.h"
+
+namespace mozilla {
+namespace dom {
+
+CreateDirectoryTask::CreateDirectoryTask(FileSystemBase* aFileSystem,
+                                         const nsAString& aPath)
+  : FileSystemTaskBase(aFileSystem)
+  , mTargetRealPath(aPath)
+{
+  MOZ_ASSERT(NS_IsMainThread(), "Only call on main thread!");
+  MOZ_ASSERT(aFileSystem);
+  nsCOMPtr<nsIGlobalObject> globalObject =
+    do_QueryInterface(aFileSystem->GetWindow());
+  if (!globalObject) {
+    return;
+  }
+  mPromise = new Promise(globalObject);
+}
+
+CreateDirectoryTask::CreateDirectoryTask(
+  FileSystemBase* aFileSystem,
+  const FileSystemCreateDirectoryParams& aParam,
+  FileSystemRequestParent* aParent)
+  : FileSystemTaskBase(aFileSystem, aParam, aParent)
+{
+  MOZ_ASSERT(FileSystemUtils::IsParentProcess(),
+             "Only call from parent process!");
+  MOZ_ASSERT(NS_IsMainThread(), "Only call on main thread!");
+  MOZ_ASSERT(aFileSystem);
+  mTargetRealPath = aParam.realPath();
+}
+
+CreateDirectoryTask::~CreateDirectoryTask()
+{
+  MOZ_ASSERT(!mPromise || NS_IsMainThread(),
+             "mPromise should be released on main thread!");
+}
+
+already_AddRefed<Promise>
+CreateDirectoryTask::GetPromise()
+{
+  MOZ_ASSERT(NS_IsMainThread(), "Only call on main thread!");
+  return nsRefPtr<Promise>(mPromise).forget();
+}
+
+FileSystemParams
+CreateDirectoryTask::GetRequestParams(const nsString& aFileSystem) const
+{
+  MOZ_ASSERT(NS_IsMainThread(), "Only call on main thread!");
+  return FileSystemCreateDirectoryParams(aFileSystem, mTargetRealPath);
+}
+
+FileSystemResponseValue
+CreateDirectoryTask::GetSuccessRequestResult() const
+{
+  MOZ_ASSERT(NS_IsMainThread(), "Only call on main thread!");
+  return FileSystemDirectoryResponse(mTargetRealPath);
+}
+
+void
+CreateDirectoryTask::SetSuccessRequestResult(const FileSystemResponseValue& aValue)
+{
+  MOZ_ASSERT(NS_IsMainThread(), "Only call on main thread!");
+  FileSystemDirectoryResponse r = aValue;
+  mTargetRealPath = r.realPath();
+}
+
+nsresult
+CreateDirectoryTask::Work()
+{
+  MOZ_ASSERT(FileSystemUtils::IsParentProcess(),
+             "Only call from parent process!");
+  MOZ_ASSERT(!NS_IsMainThread(), "Only call on worker thread!");
+
+  if (mFileSystem->IsShutdown()) {
+    return NS_ERROR_FAILURE;
+  }
+
+  nsCOMPtr<nsIFile> file = mFileSystem->GetLocalFile(mTargetRealPath);
+  if (!file) {
+    return NS_ERROR_DOM_FILESYSTEM_INVALID_PATH_ERR;
+  }
+
+  bool fileExists;
+  nsresult rv = file->Exists(&fileExists);
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    return rv;
+  }
+
+  if (fileExists) {
+    return NS_ERROR_DOM_FILESYSTEM_PATH_EXISTS_ERR;
+  }
+
+  rv = file->Create(nsIFile::DIRECTORY_TYPE, 0770);
+  return rv;
+}
+
+void
+CreateDirectoryTask::HandlerCallback()
+{
+  MOZ_ASSERT(NS_IsMainThread(), "Only call on main thread!");
+  if (mFileSystem->IsShutdown()) {
+    mPromise = nullptr;
+    return;
+  }
+
+  if (HasError()) {
+    nsRefPtr<DOMError> domError = new DOMError(mFileSystem->GetWindow(),
+      mErrorValue);
+    mPromise->MaybeReject(domError);
+    mPromise = nullptr;
+    return;
+  }
+  nsRefPtr<Directory> dir = new Directory(mFileSystem, mTargetRealPath);
+  mPromise->MaybeResolve(dir);
+  mPromise = nullptr;
+}
+
+void
+CreateDirectoryTask::GetPermissionAccessType(nsCString& aAccess) const
+{
+  aAccess.AssignLiteral("create");
+}
+
+} // namespace dom
+} // namespace mozilla