asan_interceptors.h revision 2d1fdb26e458c4ddc04155c1d421bced3ba90cd0 
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#else
31# define ASAN_INTERCEPT_ATOLL_AND_STRTOLL 0
32# define ASAN_INTERCEPT__LONGJMP 0
33# define ASAN_INTERCEPT_STRDUP 0
34# define ASAN_INTERCEPT_INDEX 0
35# define ASAN_INTERCEPT_PTHREAD_CREATE 0
36# define ASAN_INTERCEPT_MLOCKX 0
37#endif
38
39#if SANITIZER_FREEBSD || SANITIZER_LINUX
40# define ASAN_USE_ALIAS_ATTRIBUTE_FOR_INDEX 1
41#else
42# define ASAN_USE_ALIAS_ATTRIBUTE_FOR_INDEX 0
43#endif
44
45#if !SANITIZER_MAC
46# define ASAN_INTERCEPT_STRNLEN 1
47#else
48# define ASAN_INTERCEPT_STRNLEN 0
49#endif
50
51#if SANITIZER_LINUX && !SANITIZER_ANDROID
52# define ASAN_INTERCEPT_SWAPCONTEXT 1
53#else
54# define ASAN_INTERCEPT_SWAPCONTEXT 0
55#endif
56
57#if !SANITIZER_WINDOWS
58# define ASAN_INTERCEPT_SIGNAL_AND_SIGACTION 1
59#else
60# define ASAN_INTERCEPT_SIGNAL_AND_SIGACTION 0
61#endif
62
63#if !SANITIZER_WINDOWS
64# define ASAN_INTERCEPT_SIGLONGJMP 1
65#else
66# define ASAN_INTERCEPT_SIGLONGJMP 0
67#endif
68
69#if ASAN_HAS_EXCEPTIONS && !SANITIZER_WINDOWS
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
81DECLARE_REAL(int, memcmp, const void *a1, const void *a2, uptr size)
82DECLARE_REAL(void*, memcpy, void *to, const void *from, uptr size)
83DECLARE_REAL(void*, memset, void *block, int c, uptr size)
84DECLARE_REAL(char*, strchr, const char *str, int c)
85DECLARE_REAL(uptr, strlen, const char *s)
86DECLARE_REAL(char*, strncpy, char *to, const char *from, uptr size)
87DECLARE_REAL(uptr, strnlen, const char *s, uptr maxlen)
88DECLARE_REAL(char*, strstr, const char *s1, const char *s2)
89struct sigaction;
90DECLARE_REAL(int, sigaction, int signum, const struct sigaction *act,
91                             struct sigaction *oldact)
92
93namespace __asan {
94
95void 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
107