/usr/include/boost/interprocess/smart_ptr/ is in libboost1.46-dev 1.46.1-7ubuntu3.
This file is owned by root:root, with mode 0o755.
..
/usr/include/boost/interprocess/smart_ptr/deleter.hpp
/usr/include/boost/interprocess/smart_ptr/detail/
/usr/include/boost/interprocess/smart_ptr/detail/bad_weak_ptr.hpp
/usr/include/boost/interprocess/smart_ptr/detail/shared_count.hpp
/usr/include/boost/interprocess/smart_ptr/detail/sp_counted_base.hpp
/usr/include/boost/interprocess/smart_ptr/detail/sp_counted_base_atomic.hpp
/usr/include/boost/interprocess/smart_ptr/detail/sp_counted_impl.hpp
/usr/include/boost/interprocess/smart_ptr/enable_shared_from_this.hpp
/usr/include/boost/interprocess/smart_ptr/intrusive_ptr.hpp
/usr/include/boost/interprocess/smart_ptr/scoped_ptr.hpp
/usr/include/boost/interprocess/smart_ptr/shared_ptr.hpp
/usr/include/boost/interprocess/smart_ptr/unique_ptr.hpp
/usr/include/boost/interprocess/smart_ptr/weak_ptr.hpp