Disallow links from being seen by the extensions via the fileapi.

base/file_util.h

 // Copyright (c) 2011 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.
 
 // This file contains utility functions for dealing with the local
 // filesystem.
 
 #ifndef BASE_FILE_UTIL_H_
 #define BASE_FILE_UTIL_H_
 #pragma once
@@ skipping 310 matching lines @@
 
 #if defined(OS_WIN)
 // Given an existing file in |path|, it returns in |real_path| the path
 // in the native NT format, of the form "\Device\HarddiskVolumeXX\..".
 // Returns false it it fails. Empty files cannot be resolved with this
 // function.
 BASE_API bool NormalizeToNativeFilePath(const FilePath& path,
                                         FilePath* nt_path);
 #endif
 
+// This function will return if the given file is a symlink or not.
+BASE_API bool IsLink(const FilePath& file_path);
+
 // Returns information about the given file path.
 BASE_API bool GetFileInfo(const FilePath& file_path,
                           base::PlatformFileInfo* info);
 
 // Sets the time of the last access and the time of the last modification.
 BASE_API bool TouchFile(const FilePath& path,
                         const base::Time& last_accessed,
                         const base::Time& last_modified);
 
 // Set the time of the last modification. Useful for unit tests.
@@ skipping 310 matching lines @@
 BASE_API bool GetFileSystemType(const FilePath& path, FileSystemType* type);
 #endif
 
 }  // namespace file_util
 
 // Deprecated functions have been moved to this separate header file,
 // which must be included last after all the above definitions.
 #include "base/file_util_deprecated.h"
 
 #endif  // BASE_FILE_UTIL_H_