Prototype of Files service.

services/files/file_impl.h

+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef SERVICES_FILES_FILE_IMPL_H_
+#define SERVICES_FILES_FILE_IMPL_H_
+
+#include "base/files/scoped_file.h"
+#include "base/macros.h"
+#include "mojo/public/cpp/bindings/interface_request.h"
+#include "mojo/public/cpp/bindings/strong_binding.h"
+#include "services/files/directory.mojom.h"
+
+namespace mojo {
+namespace files {
+
+class FileImpl : public File {
+ public:
+  // TODO(vtl): Will need more for, e.g., |Reopen()|.
+  FileImpl(InterfaceRequest<File> request, base::ScopedFD file_fd);
+  ~FileImpl() override;
+
+  // |File| implementation:
+  void Close(const Callback<void(Error)>& callback) override;
+  void Read(uint32_t num_bytes_to_read,
+            int64_t offset,
+            Whence whence,
+            const Callback<void(Error, Array<uint8_t>)>& callback) override;
+  void Write(Array<uint8_t> bytes_to_write,
+             int64_t offset,
+             Whence whence,
+             const Callback<void(Error, uint32_t)>& callback) override;
+  void ReadToStream(ScopedDataPipeProducerHandle source,
+                    int64_t offset,
+                    Whence whence,
+                    int64_t num_bytes_to_read,
+                    const Callback<void(Error)>& callback) override;
+  void WriteFromStream(ScopedDataPipeConsumerHandle sink,
+                       int64_t offset,
+                       Whence whence,
+                       const Callback<void(Error)>& callback) override;
+  void Tell(const Callback<void(Error, int64_t)>& callback) override;
+  void Seek(int64_t offset,
+            Whence whence,
+            const Callback<void(Error, int64_t)>& callback) override;
+  void Stat(const Callback<void(Error, FileInformationPtr)>& callback) override;
+  void Truncate(int64_t size, const Callback<void(Error)>& callback) override;
+  void Touch(TimespecOrNowPtr atime,
+             TimespecOrNowPtr mtime,
+             const Callback<void(Error)>& callback) override;
+  void Dup(InterfaceRequest<File> file,
+           const Callback<void(Error)>& callback) override;
+  void Reopen(InterfaceRequest<File> file,
+              uint32_t open_flags,
+              const Callback<void(Error)>& callback) override;
+  void AsBuffer(
+      const Callback<void(Error, ScopedSharedBufferHandle)>& callback) override;
+
+ private:
+  StrongBinding<File> binding_;
+  base::ScopedFD file_fd_;
+
+  DISALLOW_COPY_AND_ASSIGN(FileImpl);
+};
+
+}  // namespace files
+}  // namespace mojo
+
+#endif  // SERVICES_FILES_FILE_IMPL_H_