1 //===-- interception_linux.h ------------------------------------*- C++ -*-===// 2 // 3 // This file is distributed under the University of Illinois Open Source 4 // License. See LICENSE.TXT for details. 5 // 6 //===----------------------------------------------------------------------===// 7 // 8 // This file is a part of AddressSanitizer, an address sanity checker. 9 // 10 // Linux-specific interception methods. 11 //===----------------------------------------------------------------------===// 12 13 #if SANITIZER_LINUX || SANITIZER_FREEBSD || SANITIZER_NETBSD || \ 14 SANITIZER_OPENBSD || SANITIZER_SOLARIS 15 16 #if !defined(INCLUDED_FROM_INTERCEPTION_LIB) 17 # error "interception_linux.h should be included from interception library only" 18 #endif 19 20 #ifndef INTERCEPTION_LINUX_H 21 #define INTERCEPTION_LINUX_H 22 23 namespace __interception { 24 // returns true if a function with the given name was found. 25 bool GetRealFunctionAddress(const char *func_name, uptr *func_addr, 26 uptr real, uptr wrapper); 27 void *GetFuncAddrVer(const char *func_name, const char *ver); 28 } // namespace __interception 29 30 #define INTERCEPT_FUNCTION_LINUX_OR_FREEBSD(func) \ 31 ::__interception::GetRealFunctionAddress( \ 32 #func, (::__interception::uptr *)&__interception::PTR_TO_REAL(func), \ 33 (::__interception::uptr) & (func), \ 34 (::__interception::uptr) & WRAP(func)) 35 36 // Android, Solaris and OpenBSD do not have dlvsym 37 #if !SANITIZER_ANDROID && !SANITIZER_SOLARIS && !SANITIZER_OPENBSD 38 #define INTERCEPT_FUNCTION_VER_LINUX_OR_FREEBSD(func, symver) \ 39 (::__interception::real_##func = (func##_type)( \ 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 // !SANITIZER_ANDROID && !SANITIZER_SOLARIS 45 46 #endif // INTERCEPTION_LINUX_H 47 #endif // SANITIZER_LINUX || SANITIZER_FREEBSD || SANITIZER_NETBSD || 48 // SANITIZER_OPENBSD || SANITIZER_SOLARIS 49