1 //===-- asan_interceptors.h -------------------------------------*- C++ -*-===//
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7 //===----------------------------------------------------------------------===//
9 // This file is a part of AddressSanitizer, an address sanity checker.
11 // ASan-private header for asan_interceptors.cpp
12 //===----------------------------------------------------------------------===//
13 #ifndef ASAN_INTERCEPTORS_H
14 #define ASAN_INTERCEPTORS_H
16 #include "asan_interceptors_memintrinsics.h"
17 #include "asan_internal.h"
18 #include "interception/interception.h"
19 #include "sanitizer_common/sanitizer_platform.h"
20 #include "sanitizer_common/sanitizer_platform_interceptors.h"
24 void InitializeAsanInterceptors();
25 void InitializePlatformInterceptors();
27 #define ENSURE_ASAN_INITED() \
29 CHECK(!asan_init_is_running); \
30 if (UNLIKELY(!asan_inited)) { \
37 // There is no general interception at all on Fuchsia and RTEMS.
38 // Only the functions in asan_interceptors_memintrinsics.h are
39 // really defined to replace libc functions.
40 #if !SANITIZER_FUCHSIA && !SANITIZER_RTEMS
42 // Use macro to describe if specific function should be
43 // intercepted on a given platform.
44 #if !SANITIZER_WINDOWS
45 # define ASAN_INTERCEPT_ATOLL_AND_STRTOLL 1
46 # define ASAN_INTERCEPT__LONGJMP 1
47 # define ASAN_INTERCEPT_INDEX 1
48 # define ASAN_INTERCEPT_PTHREAD_CREATE 1
50 # define ASAN_INTERCEPT_ATOLL_AND_STRTOLL 0
51 # define ASAN_INTERCEPT__LONGJMP 0
52 # define ASAN_INTERCEPT_INDEX 0
53 # define ASAN_INTERCEPT_PTHREAD_CREATE 0
56 #if SANITIZER_FREEBSD || SANITIZER_LINUX || SANITIZER_NETBSD || \
58 # define ASAN_USE_ALIAS_ATTRIBUTE_FOR_INDEX 1
60 # define ASAN_USE_ALIAS_ATTRIBUTE_FOR_INDEX 0
63 #if (SANITIZER_LINUX && !SANITIZER_ANDROID) || SANITIZER_SOLARIS
64 # define ASAN_INTERCEPT_SWAPCONTEXT 1
66 # define ASAN_INTERCEPT_SWAPCONTEXT 0
69 #if !SANITIZER_WINDOWS
70 # define ASAN_INTERCEPT_SIGLONGJMP 1
72 # define ASAN_INTERCEPT_SIGLONGJMP 0
75 #if SANITIZER_LINUX && !SANITIZER_ANDROID
76 # define ASAN_INTERCEPT___LONGJMP_CHK 1
78 # define ASAN_INTERCEPT___LONGJMP_CHK 0
81 #if ASAN_HAS_EXCEPTIONS && !SANITIZER_WINDOWS && !SANITIZER_SOLARIS && \
83 # define ASAN_INTERCEPT___CXA_THROW 1
84 # if ! defined(ASAN_HAS_CXA_RETHROW_PRIMARY_EXCEPTION) \
85 || ASAN_HAS_CXA_RETHROW_PRIMARY_EXCEPTION
86 # define ASAN_INTERCEPT___CXA_RETHROW_PRIMARY_EXCEPTION 1
88 # define ASAN_INTERCEPT___CXA_RETHROW_PRIMARY_EXCEPTION 0
90 # if defined(_GLIBCXX_SJLJ_EXCEPTIONS) || (SANITIZER_IOS && defined(__arm__))
91 # define ASAN_INTERCEPT__UNWIND_SJLJ_RAISEEXCEPTION 1
93 # define ASAN_INTERCEPT__UNWIND_RAISEEXCEPTION 1
96 # define ASAN_INTERCEPT___CXA_THROW 0
97 # define ASAN_INTERCEPT___CXA_RETHROW_PRIMARY_EXCEPTION 0
98 # define ASAN_INTERCEPT__UNWIND_RAISEEXCEPTION 0
99 # define ASAN_INTERCEPT__UNWIND_SJLJ_RAISEEXCEPTION 0
102 #if !SANITIZER_WINDOWS
103 # define ASAN_INTERCEPT___CXA_ATEXIT 1
105 # define ASAN_INTERCEPT___CXA_ATEXIT 0
109 # define ASAN_INTERCEPT_ATEXIT 1
111 # define ASAN_INTERCEPT_ATEXIT 0
114 #if SANITIZER_LINUX && !SANITIZER_ANDROID
115 # define ASAN_INTERCEPT___STRDUP 1
117 # define ASAN_INTERCEPT___STRDUP 0
120 #if SANITIZER_LINUX && \
121 (defined(__arm__) || defined(__aarch64__) || defined(__i386__) || \
122 defined(__x86_64__) || SANITIZER_RISCV64)
123 # define ASAN_INTERCEPT_VFORK 1
125 # define ASAN_INTERCEPT_VFORK 0
129 # define ASAN_INTERCEPT_PTHREAD_ATFORK 1
131 # define ASAN_INTERCEPT_PTHREAD_ATFORK 0
134 DECLARE_REAL(int, memcmp
, const void *a1
, const void *a2
, uptr size
)
135 DECLARE_REAL(char*, strchr
, const char *str
, int c
)
136 DECLARE_REAL(SIZE_T
, strlen
, const char *s
)
137 DECLARE_REAL(char*, strncpy
, char *to
, const char *from
, uptr size
)
138 DECLARE_REAL(uptr
, strnlen
, const char *s
, uptr maxlen
)
139 DECLARE_REAL(char*, strstr
, const char *s1
, const char *s2
)
142 #define ASAN_INTERCEPT_FUNC(name) \
144 if (!INTERCEPT_FUNCTION(name)) \
145 VReport(1, "AddressSanitizer: failed to intercept '%s'\n'", #name); \
147 #define ASAN_INTERCEPT_FUNC_VER(name, ver) \
149 if (!INTERCEPT_FUNCTION_VER(name, ver)) \
150 VReport(1, "AddressSanitizer: failed to intercept '%s@@%s'\n", #name, \
154 // OS X interceptors don't need to be initialized with INTERCEPT_FUNCTION.
155 #define ASAN_INTERCEPT_FUNC(name)
156 #endif // SANITIZER_MAC
158 #endif // !SANITIZER_FUCHSIA
160 #endif // ASAN_INTERCEPTORS_H