base/files/file_posix_hooks_internal.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef BASE_FILES_FILE_POSIX_HOOKS_INTERNAL_H_
   6 #define BASE_FILES_FILE_POSIX_HOOKS_INTERNAL_H_
   7
   8 #include "base/base_export.h"
   9
  10 namespace base {
  11
  12 // Define empty hooks for blacklisting file descriptors used in base::File.
  13 // These functions should be declared 'weak', i.e. the functions declared in
  14 // a default way would have precedence over the weak ones at link time. This
  15 // works for both static and dynamic linking.
  16 // TODO(pasko): Remove these hooks when crbug.com/424562 is fixed.
  17 //
  18 // With compilers other than GCC/Clang define strong no-op symbols for
  19 // simplicity.
  20 #if defined(COMPILER_GCC)
  21 #define ATTRIBUTE_WEAK __attribute__ ((weak))
  22 #else
  23 #define ATTRIBUTE_WEAK
  24 #endif
  25 BASE_EXPORT void ProtectFileDescriptor(int fd) ATTRIBUTE_WEAK;
  26 BASE_EXPORT void UnprotectFileDescriptor(int fd) ATTRIBUTE_WEAK;
  27 #undef ATTRIBUTE_WEAK
  28
  29 }  // namespace base
  30
  31 #endif  // BASE_FILES_FILE_POSIX_HOOKS_INTERNAL_H_