asan_interceptors.h revision 5d71de26cedae3dafc17449fe0182045c0bd20e8
1//===-- asan_interceptors.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 a part of AddressSanitizer, an address sanity checker. 11// 12// ASan-private header for asan_interceptors.cc 13//===----------------------------------------------------------------------===// 14#ifndef ASAN_INTERCEPTORS_H 15#define ASAN_INTERCEPTORS_H 16 17#include "asan_internal.h" 18#include "sanitizer_common/sanitizer_interception.h" 19#include "sanitizer_common/sanitizer_platform_interceptors.h" 20 21// Use macro to describe if specific function should be 22// intercepted on a given platform. 23#if !SANITIZER_WINDOWS 24# define ASAN_INTERCEPT_ATOLL_AND_STRTOLL 1 25# define ASAN_INTERCEPT__LONGJMP 1 26# define ASAN_INTERCEPT_STRDUP 1 27# define ASAN_INTERCEPT_INDEX 1 28# define ASAN_INTERCEPT_PTHREAD_CREATE 1 29# define ASAN_INTERCEPT_MLOCKX 1 30# define ASAN_INTERCEPT_FORK 1 31#else 32# define ASAN_INTERCEPT_ATOLL_AND_STRTOLL 0 33# define ASAN_INTERCEPT__LONGJMP 0 34# define ASAN_INTERCEPT_STRDUP 0 35# define ASAN_INTERCEPT_INDEX 0 36# define ASAN_INTERCEPT_PTHREAD_CREATE 0 37# define ASAN_INTERCEPT_MLOCKX 0 38# define ASAN_INTERCEPT_FORK 0 39#endif 40 41#if SANITIZER_FREEBSD || SANITIZER_LINUX 42# define ASAN_USE_ALIAS_ATTRIBUTE_FOR_INDEX 1 43#else 44# define ASAN_USE_ALIAS_ATTRIBUTE_FOR_INDEX 0 45#endif 46 47#if !SANITIZER_MAC 48# define ASAN_INTERCEPT_STRNLEN 1 49#else 50# define ASAN_INTERCEPT_STRNLEN 0 51#endif 52 53#if SANITIZER_LINUX && !SANITIZER_ANDROID 54# define ASAN_INTERCEPT_SWAPCONTEXT 1 55#else 56# define ASAN_INTERCEPT_SWAPCONTEXT 0 57#endif 58 59#if !SANITIZER_WINDOWS 60# define ASAN_INTERCEPT_SIGNAL_AND_SIGACTION 1 61#else 62# define ASAN_INTERCEPT_SIGNAL_AND_SIGACTION 0 63#endif 64 65#if !SANITIZER_WINDOWS 66# define ASAN_INTERCEPT_SIGLONGJMP 1 67#else 68# define ASAN_INTERCEPT_SIGLONGJMP 0 69#endif 70 71// Android bug: https://code.google.com/p/android/issues/detail?id=61799 72#if ASAN_HAS_EXCEPTIONS && !SANITIZER_WINDOWS && \ 73 !(SANITIZER_ANDROID && defined(__i386)) 74# define ASAN_INTERCEPT___CXA_THROW 1 75#else 76# define ASAN_INTERCEPT___CXA_THROW 0 77#endif 78 79#if !SANITIZER_WINDOWS 80# define ASAN_INTERCEPT___CXA_ATEXIT 1 81#else 82# define ASAN_INTERCEPT___CXA_ATEXIT 0 83#endif 84 85DECLARE_REAL(int, memcmp, const void *a1, const void *a2, uptr size) 86DECLARE_REAL(void*, memcpy, void *to, const void *from, uptr size) 87DECLARE_REAL(void*, memset, void *block, int c, uptr size) 88DECLARE_REAL(char*, strchr, const char *str, int c) 89DECLARE_REAL(uptr, strlen, const char *s) 90DECLARE_REAL(char*, strncpy, char *to, const char *from, uptr size) 91DECLARE_REAL(uptr, strnlen, const char *s, uptr maxlen) 92DECLARE_REAL(char*, strstr, const char *s1, const char *s2) 93struct sigaction; 94DECLARE_REAL(int, sigaction, int signum, const struct sigaction *act, 95 struct sigaction *oldact) 96 97namespace __asan { 98 99void InitializeAsanInterceptors(); 100 101#define ENSURE_ASAN_INITED() do { \ 102 CHECK(!asan_init_is_running); \ 103 if (UNLIKELY(!asan_inited)) { \ 104 AsanInitFromRtl(); \ 105 } \ 106} while (0) 107 108} // namespace __asan 109 110#endif // ASAN_INTERCEPTORS_H 111