| //===-- dfsan_interceptors.cc ---------------------------------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file is a part of DataFlowSanitizer. |
| // |
| // Interceptors for standard library functions. |
| //===----------------------------------------------------------------------===// |
| |
| #include "dfsan/dfsan.h" |
| #include "interception/interception.h" |
| #include "sanitizer_common/sanitizer_common.h" |
| |
| using namespace __sanitizer; |
| |
| INTERCEPTOR(void *, mmap, void *addr, SIZE_T length, int prot, int flags, |
| int fd, OFF_T offset) { |
| void *res = REAL(mmap)(addr, length, prot, flags, fd, offset); |
| if (res != (void*)-1) |
| dfsan_set_label(0, res, RoundUpTo(length, GetPageSize())); |
| return res; |
| } |
| |
| INTERCEPTOR(void *, mmap64, void *addr, SIZE_T length, int prot, int flags, |
| int fd, OFF64_T offset) { |
| void *res = REAL(mmap64)(addr, length, prot, flags, fd, offset); |
| if (res != (void*)-1) |
| dfsan_set_label(0, res, RoundUpTo(length, GetPageSize())); |
| return res; |
| } |
| |
| namespace __dfsan { |
| void InitializeInterceptors() { |
| static int inited = 0; |
| CHECK_EQ(inited, 0); |
| |
| INTERCEPT_FUNCTION(mmap); |
| INTERCEPT_FUNCTION(mmap64); |
| inited = 1; |
| } |
| } // namespace __dfsan |
