libsanitizer/asan/asan_interceptors.h

   1 //===-- asan_interceptors.h -------------------------------------*- C++ -*-===//
   2 //
   3 // This file is distributed under the University of Illinois Open Source
   4 // License. See LICENSE.TXT for details.
   5 //
   6 //===----------------------------------------------------------------------===//
   7 //
   8 // This file is a part of AddressSanitizer, an address sanity checker.
   9 //
  10 // ASan-private header for asan_interceptors.cc
  11 //===----------------------------------------------------------------------===//
  12 #ifndef ASAN_INTERCEPTORS_H
  13 #define ASAN_INTERCEPTORS_H
  14
  15 #include "asan_internal.h"
  16 #include "interception/interception.h"
  17 #include "sanitizer_common/sanitizer_platform_interceptors.h"
  18
  19 // Use macro to describe if specific function should be
  20 // intercepted on a given platform.
  21 #if !SANITIZER_WINDOWS
  22 # define ASAN_INTERCEPT_ATOLL_AND_STRTOLL 1
  23 # define ASAN_INTERCEPT__LONGJMP 1
  24 # define ASAN_INTERCEPT_INDEX 1
  25 # define ASAN_INTERCEPT_PTHREAD_CREATE 1
  26 # define ASAN_INTERCEPT_FORK 1
  27 #else
  28 # define ASAN_INTERCEPT_ATOLL_AND_STRTOLL 0
  29 # define ASAN_INTERCEPT__LONGJMP 0
  30 # define ASAN_INTERCEPT_INDEX 0
  31 # define ASAN_INTERCEPT_PTHREAD_CREATE 0
  32 # define ASAN_INTERCEPT_FORK 0
  33 #endif
  34
  35 #if SANITIZER_FREEBSD || SANITIZER_LINUX
  36 # define ASAN_USE_ALIAS_ATTRIBUTE_FOR_INDEX 1
  37 #else
  38 # define ASAN_USE_ALIAS_ATTRIBUTE_FOR_INDEX 0
  39 #endif
  40
  41 #if SANITIZER_LINUX && !SANITIZER_ANDROID
  42 # define ASAN_INTERCEPT_SWAPCONTEXT 1
  43 #else
  44 # define ASAN_INTERCEPT_SWAPCONTEXT 0
  45 #endif
  46
  47 #if !SANITIZER_WINDOWS
  48 # define ASAN_INTERCEPT_SIGNAL_AND_SIGACTION 1
  49 #else
  50 # define ASAN_INTERCEPT_SIGNAL_AND_SIGACTION 0
  51 #endif
  52
  53 #if !SANITIZER_WINDOWS
  54 # define ASAN_INTERCEPT_SIGLONGJMP 1
  55 #else
  56 # define ASAN_INTERCEPT_SIGLONGJMP 0
  57 #endif
  58
  59 // Android bug: https://code.google.com/p/android/issues/detail?id=61799
  60 #if ASAN_HAS_EXCEPTIONS && !SANITIZER_WINDOWS && \
  61     !(SANITIZER_ANDROID && defined(__i386))
  62 # define ASAN_INTERCEPT___CXA_THROW 1
  63 #else
  64 # define ASAN_INTERCEPT___CXA_THROW 0
  65 #endif
  66
  67 #if !SANITIZER_WINDOWS
  68 # define ASAN_INTERCEPT___CXA_ATEXIT 1
  69 #else
  70 # define ASAN_INTERCEPT___CXA_ATEXIT 0
  71 #endif
  72
  73 #if SANITIZER_LINUX && !SANITIZER_ANDROID
  74 # define ASAN_INTERCEPT___STRDUP 1
  75 #else
  76 # define ASAN_INTERCEPT___STRDUP 0
  77 #endif
  78
  79 DECLARE_REAL(int, memcmp, const void *a1, const void *a2, uptr size)
  80 DECLARE_REAL(void*, memcpy, void *to, const void *from, uptr size)
  81 DECLARE_REAL(void*, memset, void *block, int c, uptr size)
  82 DECLARE_REAL(char*, strchr, const char *str, int c)
  83 DECLARE_REAL(SIZE_T, strlen, const char *s)
  84 DECLARE_REAL(char*, strncpy, char *to, const char *from, uptr size)
  85 DECLARE_REAL(uptr, strnlen, const char *s, uptr maxlen)
  86 DECLARE_REAL(char*, strstr, const char *s1, const char *s2)
  87 struct sigaction;
  88 DECLARE_REAL(int, sigaction, int signum, const struct sigaction *act,
  89                              struct sigaction *oldact)
  90
  91 #if !SANITIZER_MAC
  92 #define ASAN_INTERCEPT_FUNC(name)                                        \
  93   do {                                                                   \
  94     if ((!INTERCEPT_FUNCTION(name) || !REAL(name)))                      \
  95       VReport(1, "AddressSanitizer: failed to intercept '" #name "'\n"); \
  96   } while (0)
  97 #define ASAN_INTERCEPT_FUNC_VER(name, ver)                                     \
  98   do {                                                                         \
  99     if ((!INTERCEPT_FUNCTION_VER(name, ver) || !REAL(name)))                   \
 100       VReport(                                                                 \
 101           1, "AddressSanitizer: failed to intercept '" #name "@@" #ver "'\n"); \
 102   } while (0)
 103 #else
 104 // OS X interceptors don't need to be initialized with INTERCEPT_FUNCTION.
 105 #define ASAN_INTERCEPT_FUNC(name)
 106 #endif  // SANITIZER_MAC
 107
 108 namespace __asan {
 109
 110 void InitializeAsanInterceptors();
 111 void InitializePlatformInterceptors();
 112
 113 #define ENSURE_ASAN_INITED() do { \
 114   CHECK(!asan_init_is_running); \
 115   if (UNLIKELY(!asan_inited)) { \
 116     AsanInitFromRtl(); \
 117   } \
 118 } while (0)
 119
 120 }  // namespace __asan
 121
 122 #endif  // ASAN_INTERCEPTORS_H