1  //===-- sanitizer_errno.h ---------------------------------------*- C++ -*-===//
       2  //
       3  // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
       4  // See https://llvm.org/LICENSE.txt for license information.
       5  // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
       6  //
       7  //===----------------------------------------------------------------------===//
       8  //
       9  // This file is shared between sanitizers run-time libraries.
      10  //
      11  // Defines errno to avoid including errno.h and its dependencies into sensitive
      12  // files (e.g. interceptors are not supposed to include any system headers).
      13  // It's ok to use errno.h directly when your file already depend on other system
      14  // includes though.
      15  //
      16  //===----------------------------------------------------------------------===//
      17  
      18  #ifndef SANITIZER_ERRNO_H
      19  #define SANITIZER_ERRNO_H
      20  
      21  #include "sanitizer_errno_codes.h"
      22  #include "sanitizer_platform.h"
      23  
      24  #if SANITIZER_FREEBSD || SANITIZER_APPLE
      25  #  define __errno_location __error
      26  #elif SANITIZER_ANDROID || SANITIZER_NETBSD
      27  #  define __errno_location __errno
      28  #elif SANITIZER_SOLARIS
      29  #  define __errno_location ___errno
      30  #elif SANITIZER_WINDOWS
      31  #  define __errno_location _errno
      32  #endif
      33  
      34  extern "C" int *__errno_location();
      35  
      36  #define errno (*__errno_location())
      37  
      38  #endif  // SANITIZER_ERRNO_H