Line data    Source code

       1              : /*
       2              :  *
       3              :  *    Copyright (c) 2020-2023 Project CHIP Authors
       4              :  *
       5              :  *    Licensed under the Apache License, Version 2.0 (the "License");
       6              :  *    you may not use this file except in compliance with the License.
       7              :  *    You may obtain a copy of the License at
       8              :  *
       9              :  *        http://www.apache.org/licenses/LICENSE-2.0
      10              :  *
      11              :  *    Unless required by applicable law or agreed to in writing, software
      12              :  *    distributed under the License is distributed on an "AS IS" BASIS,
      13              :  *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
      14              :  *    See the License for the specific language governing permissions and
      15              :  *    limitations under the License.
      16              :  */
      17              : #include <inet/InetInterfaceImpl.h>
      18              : #include <lib/core/CHIPConfig.h>
      19              : 
      20              : #if CHIP_MEMORY_SANITIZER_ENABLED
      21              : #include <sanitizer/msan_interface.h>
      22              : #endif
      23              : 
      24              : #if (CHIP_SYSTEM_CONFIG_USE_SOCKETS || CHIP_SYSTEM_CONFIG_USE_NETWORK_FRAMEWORK) && CHIP_SYSTEM_CONFIG_USE_BSD_IFADDRS
      25              : #include <net/if.h>
      26              : namespace chip {
      27              : namespace Inet {
      28          104 : struct if_nameindex * if_nameindexImpl()
      29              : {
      30          104 :     struct if_nameindex * result = if_nameindex();
      31              : #if CHIP_MEMORY_SANITIZER_ENABLED
      32              :     if (result)
      33              :     {
      34              :         // if_nameindex() lives in libc, which is not MSan-instrumented, and the structs it returns are populated
      35              :         // from kernel data MSan cannot observe. Manually unpoisoning the result is the only way to avoid false positives.
      36              :         for (size_t i = 0;; i++)
      37              :         {
      38              :             __msan_unpoison(&result[i], sizeof(result[i]));
      39              :             if (result[i].if_index == 0)
      40              :                 break;
      41              :             __msan_unpoison(result[i].if_name, IF_NAMESIZE);
      42              :         }
      43              :     }
      44              : #endif
      45          104 :     return result;
      46              : }
      47          104 : void if_freenameindexImpl(struct if_nameindex * inArray)
      48              : {
      49          104 :     if_freenameindex(inArray);
      50          104 : }
      51              : } // namespace Inet
      52              : } // namespace chip
      53              : #endif