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44 lines
1.3 KiB
C++
44 lines
1.3 KiB
C++
//===-- interception_linux.cc -----------------------------------*- C++ -*-===//
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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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 defined(__linux__) || defined(__NetBSD__)
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#include "interception.h"
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#include <stddef.h> // for NULL
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#include <dlfcn.h> // for dlsym
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#ifdef __NetBSD__
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static int mystrcmp(const char *s1, const char *s2) {
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while (*s1 == *s2++)
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if (*s1++ == 0)
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return (0);
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return (*(const unsigned char *)s1 - *(const unsigned char *)--s2);
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}
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#endif
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namespace __interception {
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bool GetRealFunctionAddress(const char *func_name, uptr *func_addr,
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uptr real, uptr wrapper) {
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#ifdef __NetBSD__
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// XXX: Until I come up with something better to deal with renames.
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if (mystrcmp(func_name, "sigaction") == 0)
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func_name = "__sigaction14";
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#endif
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*func_addr = (uptr)dlsym(RTLD_NEXT, func_name);
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return real == wrapper;
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}
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} // namespace __interception
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#endif // __linux__ || __NetBSD__
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