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 "asan_interceptors_memintrinsics.h"
  17 #include "interception/interception.h"
  18 #include "sanitizer_common/sanitizer_platform_interceptors.h"
  19
  20 namespace __asan {
  21
  22 void InitializeAsanInterceptors();
  23 void InitializePlatformInterceptors();
  24
  25 #define ENSURE_ASAN_INITED()      \
  26   do {                            \
  27     CHECK(!asan_init_is_running); \
  28     if (UNLIKELY(!asan_inited)) { \
  29       AsanInitFromRtl();          \
  30     }                             \
  31   } while (0)
  32
  33 }  // namespace __asan
  34
  35 // There is no general interception at all on Fuchsia and RTEMS.
  36 // Only the functions in asan_interceptors_memintrinsics.h are
  37 // really defined to replace libc functions.
  38 #if !SANITIZER_FUCHSIA && !SANITIZER_RTEMS
  39
  40 // Use macro to describe if specific function should be
  41 // intercepted on a given platform.
  42 #if !SANITIZER_WINDOWS
  43 # define ASAN_INTERCEPT_ATOLL_AND_STRTOLL 1
  44 # define ASAN_INTERCEPT__LONGJMP 1
  45 # define ASAN_INTERCEPT_INDEX 1
  46 # define ASAN_INTERCEPT_PTHREAD_CREATE 1
  47 #else
  48 # define ASAN_INTERCEPT_ATOLL_AND_STRTOLL 0
  49 # define ASAN_INTERCEPT__LONGJMP 0
  50 # define ASAN_INTERCEPT_INDEX 0
  51 # define ASAN_INTERCEPT_PTHREAD_CREATE 0
  52 #endif
  53
  54 #if SANITIZER_FREEBSD || SANITIZER_LINUX || SANITIZER_NETBSD || \
  55     SANITIZER_SOLARIS
  56 # define ASAN_USE_ALIAS_ATTRIBUTE_FOR_INDEX 1
  57 #else
  58 # define ASAN_USE_ALIAS_ATTRIBUTE_FOR_INDEX 0
  59 #endif
  60
  61 #if (SANITIZER_LINUX && !SANITIZER_ANDROID) || SANITIZER_SOLARIS
  62 # define ASAN_INTERCEPT_SWAPCONTEXT 1
  63 #else
  64 # define ASAN_INTERCEPT_SWAPCONTEXT 0
  65 #endif
  66
  67 #if !SANITIZER_WINDOWS
  68 # define ASAN_INTERCEPT_SIGLONGJMP 1
  69 #else
  70 # define ASAN_INTERCEPT_SIGLONGJMP 0
  71 #endif
  72
  73 #if SANITIZER_LINUX && !SANITIZER_ANDROID
  74 # define ASAN_INTERCEPT___LONGJMP_CHK 1
  75 #else
  76 # define ASAN_INTERCEPT___LONGJMP_CHK 0
  77 #endif
  78
  79 #if ASAN_HAS_EXCEPTIONS && !SANITIZER_WINDOWS && !SANITIZER_SOLARIS && \
  80     !SANITIZER_NETBSD
  81 # define ASAN_INTERCEPT___CXA_THROW 1
  82 # define ASAN_INTERCEPT___CXA_RETHROW_PRIMARY_EXCEPTION 1
  83 # if defined(_GLIBCXX_SJLJ_EXCEPTIONS) || (SANITIZER_IOS && defined(__arm__))
  84 #  define ASAN_INTERCEPT__UNWIND_SJLJ_RAISEEXCEPTION 1
  85 # else
  86 #  define ASAN_INTERCEPT__UNWIND_RAISEEXCEPTION 1
  87 # endif
  88 #else
  89 # define ASAN_INTERCEPT___CXA_THROW 0
  90 # define ASAN_INTERCEPT___CXA_RETHROW_PRIMARY_EXCEPTION 0
  91 # define ASAN_INTERCEPT__UNWIND_RAISEEXCEPTION 0
  92 # define ASAN_INTERCEPT__UNWIND_SJLJ_RAISEEXCEPTION 0
  93 #endif
  94
  95 #if !SANITIZER_WINDOWS
  96 # define ASAN_INTERCEPT___CXA_ATEXIT 1
  97 #else
  98 # define ASAN_INTERCEPT___CXA_ATEXIT 0
  99 #endif
 100
 101 #if SANITIZER_LINUX && !SANITIZER_ANDROID
 102 # define ASAN_INTERCEPT___STRDUP 1
 103 #else
 104 # define ASAN_INTERCEPT___STRDUP 0
 105 #endif
 106
 107 DECLARE_REAL(int, memcmp, const void *a1, const void *a2, uptr size)
 108 DECLARE_REAL(char*, strchr, const char *str, int c)
 109 DECLARE_REAL(SIZE_T, strlen, const char *s)
 110 DECLARE_REAL(char*, strncpy, char *to, const char *from, uptr size)
 111 DECLARE_REAL(uptr, strnlen, const char *s, uptr maxlen)
 112 DECLARE_REAL(char*, strstr, const char *s1, const char *s2)
 113
 114 #if !SANITIZER_MAC
 115 #define ASAN_INTERCEPT_FUNC(name)                                        \
 116   do {                                                                   \
 117     if ((!INTERCEPT_FUNCTION(name) || !REAL(name)))                      \
 118       VReport(1, "AddressSanitizer: failed to intercept '" #name "'\n"); \
 119   } while (0)
 120 #define ASAN_INTERCEPT_FUNC_VER(name, ver)                                     \
 121   do {                                                                         \
 122     if ((!INTERCEPT_FUNCTION_VER(name, ver) || !REAL(name)))                   \
 123       VReport(                                                                 \
 124           1, "AddressSanitizer: failed to intercept '" #name "@@" #ver "'\n"); \
 125   } while (0)
 126 #else
 127 // OS X interceptors don't need to be initialized with INTERCEPT_FUNCTION.
 128 #define ASAN_INTERCEPT_FUNC(name)
 129 #endif  // SANITIZER_MAC
 130
 131 #endif  // !SANITIZER_FUCHSIA
 132
 133 #endif  // ASAN_INTERCEPTORS_H