Plumbing though mode parameter to open, since fusefs can make use of it.

native_client_sdk/src/libraries/nacl_io/kernel_object.h

 // Copyright (c) 2012 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_KERNEL_OBJECT_H_
 #define LIBRARIES_NACL_IO_KERNEL_OBJECT_H_
 
 #include <pthread.h>
 
 #include <map>
@@ skipping 44 matching lines @@
   // path relative to the filesystem.
   // Assumes |out_fs| and |rel_path| are non-NULL.
   Error AcquireFsAndRelPath(const std::string& path,
                             ScopedFilesystem* out_fs,
                             Path* rel_path);
 
   // Find the filesystem and node for the given path, acquiring/creating it as
   // specified by the |oflags|.
   // Assumes |out_fs| and |out_node| are non-NULL.
   Error AcquireFsAndNode(const std::string& path,
-                         int oflags,
+                         int oflags, mode_t mflags,
                          ScopedFilesystem* out_fs,
                          ScopedNode* out_node);
 
   // Get FD-specific flags (currently only FD_CLOEXEC is supported).
   Error GetFDFlags(int fd, int* out_flags);
   // Set FD-specific flags (currently only FD_CLOEXEC is supported).
   Error SetFDFlags(int fd, int flags);
 
   // Convert from FD to KernelHandle, and acquire the handle.
   // Assumes |out_handle| is non-NULL.
@@ skipping 35 matching lines @@
 
   // Lock to protect cwd_.
   sdk_util::SimpleLock cwd_lock_;
 
   DISALLOW_COPY_AND_ASSIGN(KernelObject);
 };
 
 }  // namespace nacl_io
 
 #endif  // LIBRARIES_NACL_IO_KERNEL_OBJECT_H_