code for encrypting sensitive tcmalloc metadata

base/allocator/allocator.gyp

 # Copyright (c) 2009 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.
 
 {
   'variables': {
     'jemalloc_dir': '../../third_party/jemalloc/chromium',
     'tcmalloc_dir': '../../third_party/tcmalloc/chromium',
   },
   'targets': [
     {
       'target_name': 'allocator',
       'type': 'static_library',
+      'defines' : ["TCMALLOC_SPAN_ENCRYPT"],

[jschuh, 2011/09/13 16:37:12]

You'll probably want a flag in a main TCMalloc header that combines all these
options for simplicity. Something like TCMALLOC_HARDENED.

[bxx, 2011/09/13 19:36:09]

Done.

       'include_dirs': [
         '.',
         '<(tcmalloc_dir)/src/base',
         '<(tcmalloc_dir)/src',
         '../..',
       ],
       'direct_dependent_settings': {
         'configurations': {
           'Common_Base': {
             'msvs_settings': {
@@ skipping 89 matching lines @@
         '<(tcmalloc_dir)/src/internal_logging.h',
         '<(tcmalloc_dir)/src/linked_list.h',
         '<(tcmalloc_dir)/src/malloc_extension.cc',
         '<(tcmalloc_dir)/src/malloc_hook-inl.h',
         '<(tcmalloc_dir)/src/malloc_hook.cc',
         '<(tcmalloc_dir)/src/maybe_threads.cc',
         '<(tcmalloc_dir)/src/maybe_threads.h',
         '<(tcmalloc_dir)/src/memfs_malloc.cc',
         '<(tcmalloc_dir)/src/memory_region_map.cc',
         '<(tcmalloc_dir)/src/memory_region_map.h',
+        '<(tcmalloc_dir)/src/metadata_encrypt.h',
+        '<(tcmalloc_dir)/src/metadata_encrypt_disabled.h',
+        '<(tcmalloc_dir)/src/metadata_encrypt_generic.h',
         '<(tcmalloc_dir)/src/packed-cache-inl.h',
         '<(tcmalloc_dir)/src/page_heap.cc',
         '<(tcmalloc_dir)/src/page_heap.h',
         '<(tcmalloc_dir)/src/page_heap_allocator.h',
         '<(tcmalloc_dir)/src/pagemap.h',
         '<(tcmalloc_dir)/src/profile-handler.cc',
         '<(tcmalloc_dir)/src/profile-handler.h',
         '<(tcmalloc_dir)/src/profiledata.cc',
         '<(tcmalloc_dir)/src/profiledata.h',
         '<(tcmalloc_dir)/src/profiler.cc',
@@ skipping 297 matching lines @@
                 '$(VCInstallDir)lib',
                 '<(SHARED_INTERMEDIATE_DIR)/allocator',
               ],
             },
           ],
         },
       ],
     }],
   ],
 }