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#elif SANITIZER_HAIKU
33# define __errno_location _errnop
34#endif
35
36extern "C" int *__errno_location();
37
38#define errno (*__errno_location())
39
40#endif // SANITIZER_ERRNO_H
41