Intercept file Open/Close

base/files/protect_file_posix.gypi

+# Copyright 2014 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.
+
+# Provides sanity-checks and early crashes on some improper use of posix file
+# descriptors. See protect_file_posix.cc for details.
+#
+# Usage:
+#   {
+#     'target_name': 'libsomething',
+#     'type': 'shared_library',  // Do *not* use it for static libraries.
+#     'includes': [
+#       'base/files/protect_file_posix.gypi',
+#     ],
+#     ...
+#   }
+{
+   'conditions': [
+     # In the component build the interceptors have to be declared with
+     # non-hidden visibility, which is not desirable for the release build.
+     # Disable the extra checks for the component build for simplicity.
+     ['component != "shared_library"', {
+       'ldflags': [
+         '-Wl,--wrap=close',
+       ],
+       'dependencies': [
+         '<(DEPTH)/base/base.gyp:protect_file_posix',
+       ],
+     }],
+   ],
+}