libsanitizer/interception/interception_linux.h

   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_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
  24 namespace __interception {
  25 bool InterceptFunction(const char *name, uptr *ptr_to_real, uptr func,
  26                        uptr trampoline);
  27 bool InterceptFunction(const char *name, const char *ver, uptr *ptr_to_real,
  28                        uptr func, uptr trampoline);
  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)&TRAMPOLINE(func))
  37
  38 // dlvsym is a GNU extension supported by some other platforms.
  39 #if SANITIZER_GLIBC || SANITIZER_FREEBSD || SANITIZER_NETBSD
  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)&TRAMPOLINE(func))
  46 #else
  47 #define INTERCEPT_FUNCTION_VER_LINUX_OR_FREEBSD(func, symver) \
  48   INTERCEPT_FUNCTION_LINUX_OR_FREEBSD(func)
  49 #endif  // SANITIZER_GLIBC || SANITIZER_FREEBSD || SANITIZER_NETBSD
  50
  51 #endif  // INTERCEPTION_LINUX_H
  52 #endif  // SANITIZER_LINUX || SANITIZER_FREEBSD || SANITIZER_NETBSD ||
  53         // SANITIZER_SOLARIS