1//===-- interception_linux.h ------------------------------------*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// This file is a part of AddressSanitizer, an address sanity checker.
10//
11// Linux-specific interception methods.
12//===----------------------------------------------------------------------===//
13
14#if SANITIZER_LINUX || SANITIZER_FREEBSD || SANITIZER_NETBSD || \
15    SANITIZER_OPENBSD || SANITIZER_SOLARIS
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 {
25bool InterceptFunction(const char *name, uptr *ptr_to_real, uptr func,
26                       uptr wrapper);
27bool InterceptFunction(const char *name, const char *ver, uptr *ptr_to_real,
28                       uptr func, uptr wrapper);
29}  // namespace __interception
30
31#define INTERCEPT_FUNCTION_LINUX_OR_FREEBSD(func) \
32  ::__interception::InterceptFunction(            \
33      #func,                                      \
34      (::__interception::uptr *) & REAL(func),    \
35      (::__interception::uptr) & (func),          \
36      (::__interception::uptr) & WRAP(func))
37
38// Android,  Solaris and OpenBSD do not have dlvsym
39#if !SANITIZER_ANDROID && !SANITIZER_SOLARIS && !SANITIZER_OPENBSD
40#define INTERCEPT_FUNCTION_VER_LINUX_OR_FREEBSD(func, symver) \
41  ::__interception::InterceptFunction(                        \
42      #func, symver,                                          \
43      (::__interception::uptr *) & REAL(func),                \
44      (::__interception::uptr) & (func),                      \
45      (::__interception::uptr) & WRAP(func))
46#else
47#define INTERCEPT_FUNCTION_VER_LINUX_OR_FREEBSD(func, symver) \
48  INTERCEPT_FUNCTION_LINUX_OR_FREEBSD(func)
49#endif  // !SANITIZER_ANDROID && !SANITIZER_SOLARIS
50
51#endif  // INTERCEPTION_LINUX_H
52#endif  // SANITIZER_LINUX || SANITIZER_FREEBSD || SANITIZER_NETBSD ||
53        // SANITIZER_OPENBSD || SANITIZER_SOLARIS
54