| //===-- asan_interceptors.h -------------------------------------*- C++ -*-===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file is a part of AddressSanitizer, an address sanity checker. |
| // |
| // ASan-private header for asan_interceptors.cpp |
| //===----------------------------------------------------------------------===// |
| #ifndef ASAN_INTERCEPTORS_H |
| #define ASAN_INTERCEPTORS_H |
| |
| #include "asan_internal.h" |
| #include "asan_interceptors_memintrinsics.h" |
| #include "interception/interception.h" |
| #include "sanitizer_common/sanitizer_platform_interceptors.h" |
| |
| namespace __asan { |
| |
| void InitializeAsanInterceptors(); |
| void InitializePlatformInterceptors(); |
| |
| #define ENSURE_ASAN_INITED() \ |
| do { \ |
| CHECK(!asan_init_is_running); \ |
| if (UNLIKELY(!asan_inited)) { \ |
| AsanInitFromRtl(); \ |
| } \ |
| } while (0) |
| |
| } // namespace __asan |
| |
| // There is no general interception at all on Fuchsia and RTEMS. |
| // Only the functions in asan_interceptors_memintrinsics.h are |
| // really defined to replace libc functions. |
| #if !SANITIZER_FUCHSIA && !SANITIZER_RTEMS |
| |
| // Use macro to describe if specific function should be |
| // intercepted on a given platform. |
| #if !SANITIZER_WINDOWS |
| # define ASAN_INTERCEPT_ATOLL_AND_STRTOLL 1 |
| # define ASAN_INTERCEPT__LONGJMP 1 |
| # define ASAN_INTERCEPT_INDEX 1 |
| # define ASAN_INTERCEPT_PTHREAD_CREATE 1 |
| #else |
| # define ASAN_INTERCEPT_ATOLL_AND_STRTOLL 0 |
| # define ASAN_INTERCEPT__LONGJMP 0 |
| # define ASAN_INTERCEPT_INDEX 0 |
| # define ASAN_INTERCEPT_PTHREAD_CREATE 0 |
| #endif |
| |
| #if SANITIZER_FREEBSD || SANITIZER_LINUX || SANITIZER_NETBSD || \ |
| SANITIZER_SOLARIS |
| # define ASAN_USE_ALIAS_ATTRIBUTE_FOR_INDEX 1 |
| #else |
| # define ASAN_USE_ALIAS_ATTRIBUTE_FOR_INDEX 0 |
| #endif |
| |
| #if (SANITIZER_LINUX && !SANITIZER_ANDROID) || SANITIZER_SOLARIS |
| # define ASAN_INTERCEPT_SWAPCONTEXT 1 |
| #else |
| # define ASAN_INTERCEPT_SWAPCONTEXT 0 |
| #endif |
| |
| #if !SANITIZER_WINDOWS |
| # define ASAN_INTERCEPT_SIGLONGJMP 1 |
| #else |
| # define ASAN_INTERCEPT_SIGLONGJMP 0 |
| #endif |
| |
| #if SANITIZER_LINUX && !SANITIZER_ANDROID |
| # define ASAN_INTERCEPT___LONGJMP_CHK 1 |
| #else |
| # define ASAN_INTERCEPT___LONGJMP_CHK 0 |
| #endif |
| |
| #if ASAN_HAS_EXCEPTIONS && !SANITIZER_WINDOWS && !SANITIZER_SOLARIS && \ |
| !SANITIZER_NETBSD |
| # define ASAN_INTERCEPT___CXA_THROW 1 |
| # if ! defined(ASAN_HAS_CXA_RETHROW_PRIMARY_EXCEPTION) \ |
| || ASAN_HAS_CXA_RETHROW_PRIMARY_EXCEPTION |
| # define ASAN_INTERCEPT___CXA_RETHROW_PRIMARY_EXCEPTION 1 |
| # else |
| # define ASAN_INTERCEPT___CXA_RETHROW_PRIMARY_EXCEPTION 0 |
| # endif |
| # if defined(_GLIBCXX_SJLJ_EXCEPTIONS) || (SANITIZER_IOS && defined(__arm__)) |
| # define ASAN_INTERCEPT__UNWIND_SJLJ_RAISEEXCEPTION 1 |
| # else |
| # define ASAN_INTERCEPT__UNWIND_RAISEEXCEPTION 1 |
| # endif |
| #else |
| # define ASAN_INTERCEPT___CXA_THROW 0 |
| # define ASAN_INTERCEPT___CXA_RETHROW_PRIMARY_EXCEPTION 0 |
| # define ASAN_INTERCEPT__UNWIND_RAISEEXCEPTION 0 |
| # define ASAN_INTERCEPT__UNWIND_SJLJ_RAISEEXCEPTION 0 |
| #endif |
| |
| #if !SANITIZER_WINDOWS |
| # define ASAN_INTERCEPT___CXA_ATEXIT 1 |
| #else |
| # define ASAN_INTERCEPT___CXA_ATEXIT 0 |
| #endif |
| |
| #if SANITIZER_NETBSD |
| # define ASAN_INTERCEPT_ATEXIT 1 |
| #else |
| # define ASAN_INTERCEPT_ATEXIT 0 |
| #endif |
| |
| #if SANITIZER_LINUX && !SANITIZER_ANDROID |
| # define ASAN_INTERCEPT___STRDUP 1 |
| #else |
| # define ASAN_INTERCEPT___STRDUP 0 |
| #endif |
| |
| #if SANITIZER_LINUX && (defined(__arm__) || defined(__aarch64__) || \ |
| defined(__i386__) || defined(__x86_64__)) |
| # define ASAN_INTERCEPT_VFORK 1 |
| #else |
| # define ASAN_INTERCEPT_VFORK 0 |
| #endif |
| |
| #if SANITIZER_NETBSD |
| # define ASAN_INTERCEPT_PTHREAD_ATFORK 1 |
| #else |
| # define ASAN_INTERCEPT_PTHREAD_ATFORK 0 |
| #endif |
| |
| DECLARE_REAL(int, memcmp, const void *a1, const void *a2, uptr size) |
| DECLARE_REAL(char*, strchr, const char *str, int c) |
| DECLARE_REAL(SIZE_T, strlen, const char *s) |
| DECLARE_REAL(char*, strncpy, char *to, const char *from, uptr size) |
| DECLARE_REAL(uptr, strnlen, const char *s, uptr maxlen) |
| DECLARE_REAL(char*, strstr, const char *s1, const char *s2) |
| |
| #if !SANITIZER_MAC |
| #define ASAN_INTERCEPT_FUNC(name) \ |
| do { \ |
| if (!INTERCEPT_FUNCTION(name)) \ |
| VReport(1, "AddressSanitizer: failed to intercept '%s'\n'", #name); \ |
| } while (0) |
| #define ASAN_INTERCEPT_FUNC_VER(name, ver) \ |
| do { \ |
| if (!INTERCEPT_FUNCTION_VER(name, ver)) \ |
| VReport(1, "AddressSanitizer: failed to intercept '%s@@%s'\n", #name, \ |
| #ver); \ |
| } while (0) |
| #else |
| // OS X interceptors don't need to be initialized with INTERCEPT_FUNCTION. |
| #define ASAN_INTERCEPT_FUNC(name) |
| #endif // SANITIZER_MAC |
| |
| #endif // !SANITIZER_FUCHSIA |
| |
| #endif // ASAN_INTERCEPTORS_H |