interception_linux.h revision 5e2d3776a314629680921abd1d55d89d95a2da90 
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#ifdef __linux__
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(func) \
32    ::__interception::GetRealFunctionAddress( \
33          #func, (::__interception::uptr*)&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(func, symver) \
39     ::__interception::real_##func = (func##_f)(unsigned long) \
40         ::__interception::GetFuncAddrVer(#func, #symver)
41#else
42# define INTERCEPT_FUNCTION_VER_LINUX(func, symver) \
43     INTERCEPT_FUNCTION_LINUX(func)
44#endif  // !defined(__ANDROID__)
45
46#endif  // INTERCEPTION_LINUX_H
47#endif  // __linux__
48