[NaCl SDK] nacl_mounts: wrap functions.

native_client_sdk/src/libraries/nacl_mounts/kernel_proxy.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_MOUNTS_KERNEL_PROXY_H_
 #define LIBRARIES_NACL_MOUNTS_KERNEL_PROXY_H_
 
 #include <pthread.h>
 #include <map>
 #include <string>
@@ skipping 60 matching lines @@
   // file handle corresponding to fd is a directory
   virtual off_t lseek(int fd, off_t offset, int whence);
 
   // remove() uses the mount's GetNode() and Stat() to determine whether or
   // not the path corresponds to a directory or a file.  The mount's Rmdir()
   // or Unlink() is called accordingly.
   virtual int remove(const char* path);
   // unlink() is a simple wrapper around the mount's Unlink function.
   virtual int unlink(const char* path);
   // access() uses the Mount's Stat().
-  int access(const char*path, int amode);
+  virtual int access(const char* path, int amode);
 
 protected:
   MountFactoryMap_t factories_;
   int dev_;
 
   static KernelProxy *s_instance_;
 
   DISALLOW_COPY_AND_ASSIGN(KernelProxy);
 };
 
 #endif  // LIBRARIES_NACL_MOUNTS_KERNEL_PROXY_H_