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 85 DECLARE_REAL(int, memcmp, const void *a1, const void *a2, uptr size) 86 DECLARE_REAL(void*, memcpy, void *to, const void *from, uptr size) 87 DECLARE_REAL(void*, memset, void *block, int c, uptr size) 88 DECLARE_REAL(char*, strchr, const char *str, int c) 89 DECLARE_REAL(uptr, strlen, const char *s) 90 DECLARE_REAL(char*, strncpy, char *to, const char *from, uptr size) 91 DECLARE_REAL(uptr, strnlen, const char *s, uptr maxlen) 92 DECLARE_REAL(char*, strstr, const char *s1, const char *s2) 93 struct sigaction; 94 DECLARE_REAL(int, sigaction, int signum, const struct sigaction *act, 95 struct sigaction *oldact) 96 97 namespace __asan { 98 99 void 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
