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91c166cbb0
On Linux both version of the INTERCEPT_FUNCTION macro now return true when interception was successful. Adapt and cleanup some usages. Also note that `&(func) == &WRAP(func)` is a link-time property, but we do a runtime check. Tested on Linux and macOS. Previous attempt reverted by: 5642c3feb03d020dc06a62e3dc54f3206a97a391 This attempt to bring order to the interceptor macro goes the other direction and aligns the Linux implementation with the way things are done on Windows. Reviewed By: vitalybuka, rnk Differential Revision: https://reviews.llvm.org/D61358 llvm-svn: 359725
54 lines
2.2 KiB
C++
54 lines
2.2 KiB
C++
//===-- interception_linux.h ------------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file is a part of AddressSanitizer, an address sanity checker.
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//
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// Linux-specific interception methods.
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//===----------------------------------------------------------------------===//
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#if SANITIZER_LINUX || SANITIZER_FREEBSD || SANITIZER_NETBSD || \
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SANITIZER_OPENBSD || SANITIZER_SOLARIS
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#if !defined(INCLUDED_FROM_INTERCEPTION_LIB)
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# error "interception_linux.h should be included from interception library only"
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#endif
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#ifndef INTERCEPTION_LINUX_H
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#define INTERCEPTION_LINUX_H
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namespace __interception {
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bool InterceptFunction(const char *name, uptr *ptr_to_real, uptr func,
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uptr wrapper);
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bool InterceptFunction(const char *name, const char *ver, uptr *ptr_to_real,
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uptr func, uptr wrapper);
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} // namespace __interception
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#define INTERCEPT_FUNCTION_LINUX_OR_FREEBSD(func) \
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::__interception::InterceptFunction( \
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#func, \
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(::__interception::uptr *) & REAL(func), \
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(::__interception::uptr) & (func), \
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(::__interception::uptr) & WRAP(func))
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// Android, Solaris and OpenBSD do not have dlvsym
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#if !SANITIZER_ANDROID && !SANITIZER_SOLARIS && !SANITIZER_OPENBSD
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#define INTERCEPT_FUNCTION_VER_LINUX_OR_FREEBSD(func, symver) \
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::__interception::InterceptFunction( \
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#func, symver, \
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(::__interception::uptr *) & REAL(func), \
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(::__interception::uptr) & (func), \
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(::__interception::uptr) & WRAP(func))
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#else
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#define INTERCEPT_FUNCTION_VER_LINUX_OR_FREEBSD(func, symver) \
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INTERCEPT_FUNCTION_LINUX_OR_FREEBSD(func)
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#endif // !SANITIZER_ANDROID && !SANITIZER_SOLARIS
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#endif // INTERCEPTION_LINUX_H
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#endif // SANITIZER_LINUX || SANITIZER_FREEBSD || SANITIZER_NETBSD ||
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// SANITIZER_OPENBSD || SANITIZER_SOLARIS
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