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 24namespace __interception { 25// returns true if a function with the given name was found. 26bool GetRealFunctionAddress(const char *func_name, uptr *func_addr, 27 uptr real, uptr wrapper); 28void *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)(unsigned long) \ 40 ::__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