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- //===-- interception_linux.h ------------------------------------*- C++ -*-===//
- //
- // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
- // See https://llvm.org/LICENSE.txt for license information.
- // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
- //
- //===----------------------------------------------------------------------===//
- //
- // This file is a part of AddressSanitizer, an address sanity checker.
- //
- // Windows-specific interception methods.
- //===----------------------------------------------------------------------===//
- #if SANITIZER_WINDOWS
- #if !defined(INCLUDED_FROM_INTERCEPTION_LIB)
- # error "interception_win.h should be included from interception library only"
- #endif
- #ifndef INTERCEPTION_WIN_H
- #define INTERCEPTION_WIN_H
- namespace __interception {
- // All the functions in the OverrideFunction() family return true on success,
- // false on failure (including "couldn't find the function").
- // Overrides a function by its address.
- bool OverrideFunction(uptr old_func, uptr new_func, uptr *orig_old_func = 0);
- // Overrides a function in a system DLL or DLL CRT by its exported name.
- bool OverrideFunction(const char *name, uptr new_func, uptr *orig_old_func = 0);
- // Windows-only replacement for GetProcAddress. Useful for some sanitizers.
- uptr InternalGetProcAddress(void *module, const char *func_name);
- // Overrides a function only when it is called from a specific DLL. For example,
- // this is used to override calls to HeapAlloc/HeapFree from ucrtbase without
- // affecting other third party libraries.
- bool OverrideImportedFunction(const char *module_to_patch,
- const char *imported_module,
- const char *function_name, uptr new_function,
- uptr *orig_old_func);
- #if !SANITIZER_WINDOWS64
- // Exposed for unittests
- bool OverrideFunctionWithDetour(
- uptr old_func, uptr new_func, uptr *orig_old_func);
- #endif
- // Exposed for unittests
- bool OverrideFunctionWithRedirectJump(
- uptr old_func, uptr new_func, uptr *orig_old_func);
- bool OverrideFunctionWithHotPatch(
- uptr old_func, uptr new_func, uptr *orig_old_func);
- bool OverrideFunctionWithTrampoline(
- uptr old_func, uptr new_func, uptr *orig_old_func);
- // Exposed for unittests
- void TestOnlyReleaseTrampolineRegions();
- } // namespace __interception
- #if defined(INTERCEPTION_DYNAMIC_CRT)
- #define INTERCEPT_FUNCTION_WIN(func) \
- ::__interception::OverrideFunction(#func, \
- (::__interception::uptr)WRAP(func), \
- (::__interception::uptr *)&REAL(func))
- #else
- #define INTERCEPT_FUNCTION_WIN(func) \
- ::__interception::OverrideFunction((::__interception::uptr)func, \
- (::__interception::uptr)WRAP(func), \
- (::__interception::uptr *)&REAL(func))
- #endif
- #define INTERCEPT_FUNCTION_VER_WIN(func, symver) INTERCEPT_FUNCTION_WIN(func)
- #define INTERCEPT_FUNCTION_DLLIMPORT(user_dll, provider_dll, func) \
- ::__interception::OverrideImportedFunction( \
- user_dll, provider_dll, #func, (::__interception::uptr)WRAP(func), \
- (::__interception::uptr *)&REAL(func))
- #endif // INTERCEPTION_WIN_H
- #endif // SANITIZER_WINDOWS
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