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 // Linux-specific interception methods. 13 //===----------------------------------------------------------------------===// 14 15 #if defined(__linux__) || defined(__FreeBSD__) 16 17 #if !defined(INCLUDED_FROM_INTERCEPTION_LIB) 18 # error "interception_linux.h should be included from interception library only" 19 #endif 20 21 #ifndef INTERCEPTION_LINUX_H 22 #define INTERCEPTION_LINUX_H 23 24 namespace __interception { 25 // returns true if a function with the given name was found. 26 bool GetRealFunctionAddress(const char *func_name, uptr *func_addr, 27 uptr real, uptr wrapper); 28 void *GetFuncAddrVer(const char *func_name, const char *ver); 29 } // namespace __interception 30 31 #define INTERCEPT_FUNCTION_LINUX_OR_FREEBSD(func) \ 32 ::__interception::GetRealFunctionAddress( \ 33 #func, (::__interception::uptr *)&__interception::PTR_TO_REAL(func), \ 34 (::__interception::uptr) & (func), \ 35 (::__interception::uptr) & WRAP(func)) 36 37 #if !defined(__ANDROID__) // android does not have dlvsym 38 #define INTERCEPT_FUNCTION_VER_LINUX_OR_FREEBSD(func, symver) \ 39 (::__interception::real_##func = (func##_f)( \ 40 unsigned long)::__interception::GetFuncAddrVer(#func, symver)) 41 #else 42 #define INTERCEPT_FUNCTION_VER_LINUX_OR_FREEBSD(func, symver) \ 43 INTERCEPT_FUNCTION_LINUX_OR_FREEBSD(func) 44 #endif // !defined(__ANDROID__) 45 46 #endif // INTERCEPTION_LINUX_H 47 #endif // __linux__ || __FreeBSD__ 48