[NaCl SDK] Add initial support for google drive to nacl_io

native_client_sdk/src/libraries/nacl_io/googledrivefs/googledrivefs_node.h

+// Copyright (c) 2016 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 LIBRARIES_NACL_IO_GOOGLEDRIVEFS_NODE_H_
+#define LIBRARIES_NACL_IO_GOOGLEDRIVEFS_NODE_H_
+
+#include <sys/stat.h>
+
+#include "nacl_io/googledrivefs/googledrivefs.h"
+#include "nacl_io/kernel_handle.h"
+#include "nacl_io/node.h"
+#include "nacl_io/osdirent.h"
+
+namespace nacl_io {
+
+class GoogleDriveFsNode : public Node {
+ public:
+  GoogleDriveFsNode(GoogleDriveFs* googledrivefs);
+
+  Error GetDents(size_t offs, struct dirent* pdir, size_t size, int* out_bytes);
+  Error Write(const HandleAttr& attr,
+              const void* buf,
+              size_t count,
+              int* out_bytes);
+  Error FTruncate(off_t length);
+  Error Read(const HandleAttr& attr, void* buf, size_t count, int* out_bytes);
+  Error GetSize(off_t* out_size);
+  Error GetStat(struct stat* pstat);
+  Error Init(int open_flags);
+};
+
+}  // namespace nacl_io
+
+#endif  // LIBRARIES_NACL_IO_GOOGLEDRIVEFS_NODE_H_