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| author | Dmitry Vyukov <dvyukov@google.com> | 2012-05-24 13:54:31 +0000 |
|---|---|---|
| committer | Dmitry Vyukov <dvyukov@google.com> | 2012-05-24 13:54:31 +0000 |
| commit | 580469d7e40e39319cb2d3750edac4bccca18105 (patch) | |
| tree | fca0e8f57a0c68e1aedf80f7f10c6cadf4f54117 /lib/interception/interception_linux.cc | |
| parent | 24567d409cca096b950574fa4b19aa4c2c67a1f0 (diff) | |
| download | compiler-rt-580469d7e40e39319cb2d3750edac4bccca18105.tar.gz compiler-rt-580469d7e40e39319cb2d3750edac4bccca18105.tar.bz2 compiler-rt-580469d7e40e39319cb2d3750edac4bccca18105.tar.xz | |
asan/tsan: weak interceptors
The idea isthat asan/tsan can survive if user intercepts the same functions. At the same time user has an ability to call back into asan/tsan runtime. See the following tests for examples:
asan/output_tests/interception_failure_test-linux.cc
asan/output_tests/interception_test-linux.cc
asan/output_tests/interception_malloc_test-linux.cc
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@157388 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/interception/interception_linux.cc')
| -rw-r--r-- | lib/interception/interception_linux.cc | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/lib/interception/interception_linux.cc b/lib/interception/interception_linux.cc index 74fcf563..37e59332 100644 --- a/lib/interception/interception_linux.cc +++ b/lib/interception/interception_linux.cc @@ -18,9 +18,10 @@ #include <dlfcn.h> // for dlsym namespace __interception { -bool GetRealFunctionAddress(const char *func_name, void **func_addr) { +bool GetRealFunctionAddress(const char *func_name, void **func_addr, + void *real, void *wrapper) { *func_addr = dlsym(RTLD_NEXT, func_name); - return (*func_addr != NULL); + return real == wrapper; } } // namespace __interception |