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[FreeBSD/FreeBSD.git] / contrib / compiler-rt / lib / sanitizer_common / sanitizer_errno.h
1 //===-- sanitizer_errno.h ---------------------------------------*- C++ -*-===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // This file is shared between sanitizers run-time libraries.
11 //
12 // Defines errno to avoid including errno.h and its dependencies into sensitive
13 // files (e.g. interceptors are not supposed to include any system headers).
14 // It's ok to use errno.h directly when your file already depend on other system
15 // includes though.
16 //
17 //===----------------------------------------------------------------------===//
18
19 #ifndef SANITIZER_ERRNO_H
20 #define SANITIZER_ERRNO_H
21
22 #include "sanitizer_errno_codes.h"
23 #include "sanitizer_platform.h"
24
25 #if SANITIZER_FREEBSD || SANITIZER_MAC
26 #  define __errno_location __error
27 #elif SANITIZER_ANDROID || SANITIZER_NETBSD || SANITIZER_OPENBSD || \
28   SANITIZER_RTEMS
29 #  define __errno_location __errno
30 #elif SANITIZER_SOLARIS
31 #  define __errno_location ___errno
32 #elif SANITIZER_WINDOWS
33 #  define __errno_location _errno
34 #endif
35
36 extern "C" int *__errno_location();
37
38 #define errno (*__errno_location())
39
40 #endif  // SANITIZER_ERRNO_H