1 //===-- interception_linux.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 // Windows-specific interception methods. 13 //===----------------------------------------------------------------------===// 14 15 #ifdef _WIN32 16 17 #if !defined(INCLUDED_FROM_INTERCEPTION_LIB) 18 # error "interception_win.h should be included from interception library only" 19 #endif 20 21 #ifndef INTERCEPTION_WIN_H 22 #define INTERCEPTION_WIN_H 23 24 namespace __interception { 25 // All the functions in the OverrideFunction() family return true on success, 26 // false on failure (including "couldn't find the function"). 27 28 // Overrides a function by its address. 29 bool OverrideFunction(uptr old_func, uptr new_func, uptr *orig_old_func = 0); 30 31 // Overrides a function in a system DLL or DLL CRT by its exported name. 32 bool OverrideFunction(const char *name, uptr new_func, uptr *orig_old_func = 0); 33 34 // Windows-only replacement for GetProcAddress. Useful for some sanitizers. 35 uptr InternalGetProcAddress(void *module, const char *func_name); 36 37 // Overrides a function only when it is called from a specific DLL. For example, 38 // this is used to override calls to HeapAlloc/HeapFree from ucrtbase without 39 // affecting other third party libraries. 40 bool OverrideImportedFunction(const char *module_to_patch, 41 const char *imported_module, 42 const char *function_name, uptr new_function, 43 uptr *orig_old_func); 44 45 #if !SANITIZER_WINDOWS64 46 // Exposed for unittests 47 bool OverrideFunctionWithDetour( 48 uptr old_func, uptr new_func, uptr *orig_old_func); 49 #endif 50 51 // Exposed for unittests 52 bool OverrideFunctionWithRedirectJump( 53 uptr old_func, uptr new_func, uptr *orig_old_func); 54 bool OverrideFunctionWithHotPatch( 55 uptr old_func, uptr new_func, uptr *orig_old_func); 56 bool OverrideFunctionWithTrampoline( 57 uptr old_func, uptr new_func, uptr *orig_old_func); 58 59 // Exposed for unittests 60 void TestOnlyReleaseTrampolineRegions(); 61 62 } // namespace __interception 63 64 #if defined(INTERCEPTION_DYNAMIC_CRT) 65 #define INTERCEPT_FUNCTION_WIN(func) \ 66 ::__interception::OverrideFunction(#func, \ 67 (::__interception::uptr)WRAP(func), \ 68 (::__interception::uptr *)&REAL(func)) 69 #else 70 #define INTERCEPT_FUNCTION_WIN(func) \ 71 ::__interception::OverrideFunction((::__interception::uptr)func, \ 72 (::__interception::uptr)WRAP(func), \ 73 (::__interception::uptr *)&REAL(func)) 74 #endif 75 76 #define INTERCEPT_FUNCTION_VER_WIN(func, symver) INTERCEPT_FUNCTION_WIN(func) 77 78 #define INTERCEPT_FUNCTION_DLLIMPORT(user_dll, provider_dll, func) \ 79 ::__interception::OverrideImportedFunction( \ 80 user_dll, provider_dll, #func, (::__interception::uptr)WRAP(func), \ 81 (::__interception::uptr *)&REAL(func)) 82 83 #endif // INTERCEPTION_WIN_H 84 #endif // _WIN32 85
