1 //===-- interception_linux.cc -----------------------------------*- 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 #include "interception.h"
17
18 #include <dlfcn.h> // for dlsym() and dlvsym()
19
20 namespace __interception {
GetRealFunctionAddress(const char * func_name,uptr * func_addr,uptr real,uptr wrapper)21 bool GetRealFunctionAddress(const char *func_name, uptr *func_addr,
22 uptr real, uptr wrapper) {
23 *func_addr = (uptr)dlsym(RTLD_NEXT, func_name);
24 return real == wrapper;
25 }
26
27 #if !defined(__ANDROID__) // android does not have dlvsym
GetFuncAddrVer(const char * func_name,const char * ver)28 void *GetFuncAddrVer(const char *func_name, const char *ver) {
29 return dlvsym(RTLD_NEXT, func_name, ver);
30 }
31 #endif // !defined(__ANDROID__)
32
33 } // namespace __interception
34
35
36 #endif // __linux__ || __FreeBSD__
37