| //===-- asan_intercepted_functions.h ----------------------------*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file is a part of AddressSanitizer, an address sanity checker. |
| // |
| // ASan-private header containing prototypes for wrapper functions and wrappers |
| //===----------------------------------------------------------------------===// |
| #ifndef ASAN_INTERCEPTED_FUNCTIONS_H |
| #define ASAN_INTERCEPTED_FUNCTIONS_H |
| |
| #include "asan_internal.h" |
| #include "interception/interception.h" |
| |
| using __sanitizer::uptr; |
| |
| // Use macro to describe if specific function should be |
| // intercepted on a given platform. |
| #if !defined(_WIN32) |
| # define ASAN_INTERCEPT_ATOLL_AND_STRTOLL 1 |
| # define ASAN_INTERCEPT__LONGJMP 1 |
| # define ASAN_INTERCEPT_STRDUP 1 |
| # define ASAN_INTERCEPT_STRCASECMP_AND_STRNCASECMP 1 |
| # define ASAN_INTERCEPT_INDEX 1 |
| # define ASAN_INTERCEPT_PTHREAD_CREATE 1 |
| # define ASAN_INTERCEPT_MLOCKX 1 |
| #else |
| # define ASAN_INTERCEPT_ATOLL_AND_STRTOLL 0 |
| # define ASAN_INTERCEPT__LONGJMP 0 |
| # define ASAN_INTERCEPT_STRDUP 0 |
| # define ASAN_INTERCEPT_STRCASECMP_AND_STRNCASECMP 0 |
| # define ASAN_INTERCEPT_INDEX 0 |
| # define ASAN_INTERCEPT_PTHREAD_CREATE 0 |
| # define ASAN_INTERCEPT_MLOCKX 0 |
| #endif |
| |
| #if defined(__linux__) |
| # define ASAN_USE_ALIAS_ATTRIBUTE_FOR_INDEX 1 |
| #else |
| # define ASAN_USE_ALIAS_ATTRIBUTE_FOR_INDEX 0 |
| #endif |
| |
| #if !defined(__APPLE__) |
| # define ASAN_INTERCEPT_STRNLEN 1 |
| #else |
| # define ASAN_INTERCEPT_STRNLEN 0 |
| #endif |
| |
| #if !defined(ANDROID) && !defined(_WIN32) |
| # define ASAN_INTERCEPT_SIGNAL_AND_SIGACTION 1 |
| #else |
| # define ASAN_INTERCEPT_SIGNAL_AND_SIGACTION 0 |
| #endif |
| |
| // On Darwin siglongjmp tailcalls longjmp, so we don't want to intercept it |
| // there. |
| #if !defined(_WIN32) && (!defined(__APPLE__) || defined(DYNAMIC_MAC_WRAPPERS)) |
| # define ASAN_INTERCEPT_SIGLONGJMP 1 |
| #else |
| # define ASAN_INTERCEPT_SIGLONGJMP 0 |
| #endif |
| |
| #if ASAN_HAS_EXCEPTIONS && !defined(_WIN32) |
| # define ASAN_INTERCEPT___CXA_THROW 1 |
| #else |
| # define ASAN_INTERCEPT___CXA_THROW 0 |
| #endif |
| |
| #define DECLARE_FUNCTION_AND_WRAPPER(ret_type, func, ...) \ |
| ret_type func(__VA_ARGS__); \ |
| ret_type WRAP(func)(__VA_ARGS__) |
| |
| // Use extern declarations of intercepted functions on Mac and Windows |
| // to avoid including system headers. |
| #if defined(__APPLE__) || (defined(_WIN32) && !defined(_DLL)) |
| extern "C" { |
| // signal.h |
| # if ASAN_INTERCEPT_SIGNAL_AND_SIGACTION |
| struct sigaction; |
| DECLARE_FUNCTION_AND_WRAPPER(int, sigaction, int sig, |
| const struct sigaction *act, |
| struct sigaction *oldact); |
| DECLARE_FUNCTION_AND_WRAPPER(void*, signal, int signum, void *handler); |
| # endif |
| |
| // setjmp.h |
| DECLARE_FUNCTION_AND_WRAPPER(void, longjmp, void *env, int value); |
| # if ASAN_INTERCEPT__LONGJMP |
| DECLARE_FUNCTION_AND_WRAPPER(void, _longjmp, void *env, int value); |
| # endif |
| # if ASAN_INTERCEPT_SIGLONGJMP |
| DECLARE_FUNCTION_AND_WRAPPER(void, siglongjmp, void *env, int value); |
| # endif |
| # if ASAN_INTERCEPT___CXA_THROW |
| DECLARE_FUNCTION_AND_WRAPPER(void, __cxa_throw, void *a, void *b, void *c); |
| #endif |
| |
| // string.h / strings.h |
| DECLARE_FUNCTION_AND_WRAPPER(int, memcmp, |
| const void *a1, const void *a2, uptr size); |
| DECLARE_FUNCTION_AND_WRAPPER(void*, memmove, |
| void *to, const void *from, uptr size); |
| DECLARE_FUNCTION_AND_WRAPPER(void*, memcpy, |
| void *to, const void *from, uptr size); |
| DECLARE_FUNCTION_AND_WRAPPER(void*, memset, void *block, int c, uptr size); |
| DECLARE_FUNCTION_AND_WRAPPER(char*, strchr, const char *str, int c); |
| DECLARE_FUNCTION_AND_WRAPPER(char*, strcat, /* NOLINT */ |
| char *to, const char* from); |
| DECLARE_FUNCTION_AND_WRAPPER(char*, strncat, |
| char *to, const char* from, uptr size); |
| DECLARE_FUNCTION_AND_WRAPPER(char*, strcpy, /* NOLINT */ |
| char *to, const char* from); |
| DECLARE_FUNCTION_AND_WRAPPER(char*, strncpy, |
| char *to, const char* from, uptr size); |
| DECLARE_FUNCTION_AND_WRAPPER(int, strcmp, const char *s1, const char* s2); |
| DECLARE_FUNCTION_AND_WRAPPER(int, strncmp, |
| const char *s1, const char* s2, uptr size); |
| DECLARE_FUNCTION_AND_WRAPPER(uptr, strlen, const char *s); |
| # if ASAN_INTERCEPT_STRCASECMP_AND_STRNCASECMP |
| DECLARE_FUNCTION_AND_WRAPPER(int, strcasecmp, const char *s1, const char *s2); |
| DECLARE_FUNCTION_AND_WRAPPER(int, strncasecmp, |
| const char *s1, const char *s2, uptr n); |
| # endif |
| # if ASAN_INTERCEPT_STRDUP |
| DECLARE_FUNCTION_AND_WRAPPER(char*, strdup, const char *s); |
| # endif |
| # if ASAN_INTERCEPT_STRNLEN |
| DECLARE_FUNCTION_AND_WRAPPER(uptr, strnlen, const char *s, uptr maxlen); |
| # endif |
| #if ASAN_INTERCEPT_INDEX |
| DECLARE_FUNCTION_AND_WRAPPER(char*, index, const char *string, int c); |
| #endif |
| |
| // stdlib.h |
| DECLARE_FUNCTION_AND_WRAPPER(int, atoi, const char *nptr); |
| DECLARE_FUNCTION_AND_WRAPPER(long, atol, const char *nptr); // NOLINT |
| DECLARE_FUNCTION_AND_WRAPPER(long, strtol, const char *nptr, char **endptr, int base); // NOLINT |
| # if ASAN_INTERCEPT_ATOLL_AND_STRTOLL |
| DECLARE_FUNCTION_AND_WRAPPER(long long, atoll, const char *nptr); // NOLINT |
| DECLARE_FUNCTION_AND_WRAPPER(long long, strtoll, const char *nptr, char **endptr, int base); // NOLINT |
| # endif |
| |
| # if ASAN_INTERCEPT_MLOCKX |
| // mlock/munlock |
| DECLARE_FUNCTION_AND_WRAPPER(int, mlock, const void *addr, size_t len); |
| DECLARE_FUNCTION_AND_WRAPPER(int, munlock, const void *addr, size_t len); |
| DECLARE_FUNCTION_AND_WRAPPER(int, mlockall, int flags); |
| DECLARE_FUNCTION_AND_WRAPPER(int, munlockall, void); |
| # endif |
| |
| // Windows threads. |
| # if defined(_WIN32) |
| __declspec(dllimport) |
| void* __stdcall CreateThread(void *sec, uptr st, void* start, |
| void *arg, DWORD fl, DWORD *id); |
| # endif |
| // Posix threads. |
| # if ASAN_INTERCEPT_PTHREAD_CREATE |
| DECLARE_FUNCTION_AND_WRAPPER(int, pthread_create, |
| void *thread, void *attr, |
| void *(*start_routine)(void*), void *arg); |
| # endif |
| |
| #if defined(__APPLE__) |
| typedef void* pthread_workqueue_t; |
| typedef void* pthread_workitem_handle_t; |
| |
| typedef void* dispatch_group_t; |
| typedef void* dispatch_queue_t; |
| typedef u64 dispatch_time_t; |
| typedef void (*dispatch_function_t)(void *block); |
| typedef void* (*worker_t)(void *block); |
| typedef void* CFStringRef; |
| typedef void* CFAllocatorRef; |
| |
| DECLARE_FUNCTION_AND_WRAPPER(void, dispatch_async_f, |
| dispatch_queue_t dq, |
| void *ctxt, dispatch_function_t func); |
| DECLARE_FUNCTION_AND_WRAPPER(void, dispatch_sync_f, |
| dispatch_queue_t dq, |
| void *ctxt, dispatch_function_t func); |
| DECLARE_FUNCTION_AND_WRAPPER(void, dispatch_after_f, |
| dispatch_time_t when, dispatch_queue_t dq, |
| void *ctxt, dispatch_function_t func); |
| DECLARE_FUNCTION_AND_WRAPPER(void, dispatch_barrier_async_f, |
| dispatch_queue_t dq, |
| void *ctxt, dispatch_function_t func); |
| DECLARE_FUNCTION_AND_WRAPPER(void, dispatch_group_async_f, |
| dispatch_group_t group, dispatch_queue_t dq, |
| void *ctxt, dispatch_function_t func); |
| |
| DECLARE_FUNCTION_AND_WRAPPER(void, __CFInitialize); |
| DECLARE_FUNCTION_AND_WRAPPER(CFStringRef, CFStringCreateCopy, |
| CFAllocatorRef alloc, CFStringRef str); |
| DECLARE_FUNCTION_AND_WRAPPER(void, free, void* ptr); |
| #endif // __APPLE__ |
| } // extern "C" |
| #endif |
| |
| #endif // ASAN_INTERCEPTED_FUNCTIONS_H |
