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 "sanitizer_common/sanitizer_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_STRDUP 1
  25 # define ASAN_INTERCEPT_INDEX 1
  26 # define ASAN_INTERCEPT_PTHREAD_CREATE 1
  27 # define ASAN_INTERCEPT_FORK 1
  28 #else
  29 # define ASAN_INTERCEPT_ATOLL_AND_STRTOLL 0
  30 # define ASAN_INTERCEPT__LONGJMP 0
  31 # define ASAN_INTERCEPT_STRDUP 0
  32 # define ASAN_INTERCEPT_INDEX 0
  33 # define ASAN_INTERCEPT_PTHREAD_CREATE 0
  34 # define ASAN_INTERCEPT_FORK 0
  35 #endif
  36
  37 #if SANITIZER_FREEBSD || SANITIZER_LINUX
  38 # define ASAN_USE_ALIAS_ATTRIBUTE_FOR_INDEX 1
  39 #else
  40 # define ASAN_USE_ALIAS_ATTRIBUTE_FOR_INDEX 0
  41 #endif
  42
  43 #if !SANITIZER_MAC
  44 # define ASAN_INTERCEPT_STRNLEN 1
  45 #else
  46 # define ASAN_INTERCEPT_STRNLEN 0
  47 #endif
  48
  49 #if SANITIZER_LINUX && !SANITIZER_ANDROID
  50 # define ASAN_INTERCEPT_SWAPCONTEXT 1
  51 #else
  52 # define ASAN_INTERCEPT_SWAPCONTEXT 0
  53 #endif
  54
  55 #if !SANITIZER_WINDOWS
  56 # define ASAN_INTERCEPT_SIGNAL_AND_SIGACTION 1
  57 #else
  58 # define ASAN_INTERCEPT_SIGNAL_AND_SIGACTION 0
  59 #endif
  60
  61 #if !SANITIZER_WINDOWS
  62 # define ASAN_INTERCEPT_SIGLONGJMP 1
  63 #else
  64 # define ASAN_INTERCEPT_SIGLONGJMP 0
  65 #endif
  66
  67 // Android bug: https://code.google.com/p/android/issues/detail?id=61799
  68 #if ASAN_HAS_EXCEPTIONS && !SANITIZER_WINDOWS && \
  69     !(SANITIZER_ANDROID && defined(__i386))
  70 # define ASAN_INTERCEPT___CXA_THROW 1
  71 #else
  72 # define ASAN_INTERCEPT___CXA_THROW 0
  73 #endif
  74
  75 #if !SANITIZER_WINDOWS
  76 # define ASAN_INTERCEPT___CXA_ATEXIT 1
  77 #else
  78 # define ASAN_INTERCEPT___CXA_ATEXIT 0
  79 #endif
  80
  81 DECLARE_REAL(int, memcmp, const void *a1, const void *a2, uptr size)
  82 DECLARE_REAL(void*, memcpy, void *to, const void *from, uptr size)
  83 DECLARE_REAL(void*, memset, void *block, int c, uptr size)
  84 DECLARE_REAL(char*, strchr, const char *str, int c)
  85 DECLARE_REAL(SIZE_T, strlen, const char *s)
  86 DECLARE_REAL(char*, strncpy, char *to, const char *from, uptr size)
  87 DECLARE_REAL(uptr, strnlen, const char *s, uptr maxlen)
  88 DECLARE_REAL(char*, strstr, const char *s1, const char *s2)
  89 struct sigaction;
  90 DECLARE_REAL(int, sigaction, int signum, const struct sigaction *act,
  91                              struct sigaction *oldact)
  92
  93 namespace __asan {
  94
  95 void InitializeAsanInterceptors();
  96
  97 #define ENSURE_ASAN_INITED() do { \
  98   CHECK(!asan_init_is_running); \
  99   if (UNLIKELY(!asan_inited)) { \
 100     AsanInitFromRtl(); \
 101   } \
 102 } while (0)
 103
 104 }  // namespace __asan
 105
 106 #endif  // ASAN_INTERCEPTORS_H