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45 lines
1.4 KiB
45 lines
1.4 KiB
4 months ago
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//===-- dfsan_interceptors.cc ---------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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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 DataFlowSanitizer.
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//
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// Interceptors for standard library functions.
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//===----------------------------------------------------------------------===//
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#include "dfsan/dfsan.h"
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#include "interception/interception.h"
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#include "sanitizer_common/sanitizer_common.h"
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INTERCEPTOR(void *, mmap, void *addr, SIZE_T length, int prot, int flags,
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int fd, OFF_T offset) {
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void *res = REAL(mmap)(addr, length, prot, flags, fd, offset);
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if (res != (void*)-1)
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dfsan_set_label(0, res, RoundUpTo(length, GetPageSize()));
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return res;
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}
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INTERCEPTOR(void *, mmap64, void *addr, SIZE_T length, int prot, int flags,
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int fd, OFF64_T offset) {
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void *res = REAL(mmap64)(addr, length, prot, flags, fd, offset);
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if (res != (void*)-1)
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dfsan_set_label(0, res, RoundUpTo(length, GetPageSize()));
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return res;
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}
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namespace __dfsan {
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void InitializeInterceptors() {
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static int inited = 0;
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CHECK_EQ(inited, 0);
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INTERCEPT_FUNCTION(mmap);
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INTERCEPT_FUNCTION(mmap64);
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inited = 1;
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}
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} // namespace __dfsan
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