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 wrapper);
      27  bool 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  // 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) & WRAP(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