/usr/include/dolfin/swig/ is in libdolfin-dev 2017.2.0.post0-2.
This file is owned by root:root, with mode 0o755.
..
/usr/include/dolfin/swig/adaptivity/
/usr/include/dolfin/swig/adaptivity/pre.i
/usr/include/dolfin/swig/ale/
/usr/include/dolfin/swig/ale/pre.i
/usr/include/dolfin/swig/common/
/usr/include/dolfin/swig/common/pre.i
/usr/include/dolfin/swig/defines.i
/usr/include/dolfin/swig/exceptions.i
/usr/include/dolfin/swig/fem/
/usr/include/dolfin/swig/fem/pre.i
/usr/include/dolfin/swig/forwarddeclarations.i
/usr/include/dolfin/swig/function/
/usr/include/dolfin/swig/function/pre.i
/usr/include/dolfin/swig/geometry/
/usr/include/dolfin/swig/geometry/pre.i
/usr/include/dolfin/swig/globalincludes.i
/usr/include/dolfin/swig/graph/
/usr/include/dolfin/swig/graph/pre.i
/usr/include/dolfin/swig/io/
/usr/include/dolfin/swig/io/pre.i
/usr/include/dolfin/swig/la/
/usr/include/dolfin/swig/la/pre.i
/usr/include/dolfin/swig/log/
/usr/include/dolfin/swig/log/pre.i
/usr/include/dolfin/swig/mesh/
/usr/include/dolfin/swig/mesh/pre.i
/usr/include/dolfin/swig/multistage/
/usr/include/dolfin/swig/multistage/pre.i
/usr/include/dolfin/swig/nls/
/usr/include/dolfin/swig/nls/pre.i
/usr/include/dolfin/swig/parameter/
/usr/include/dolfin/swig/parameter/pre.i
/usr/include/dolfin/swig/shared_ptr_classes.i
/usr/include/dolfin/swig/typemaps/
/usr/include/dolfin/swig/typemaps/array.i
/usr/include/dolfin/swig/typemaps/includes.i
/usr/include/dolfin/swig/typemaps/numpy.i
/usr/include/dolfin/swig/typemaps/primitives.i
/usr/include/dolfin/swig/typemaps/std_array.i
/usr/include/dolfin/swig/typemaps/std_map.i
/usr/include/dolfin/swig/typemaps/std_pair.i
/usr/include/dolfin/swig/typemaps/std_set.i
/usr/include/dolfin/swig/typemaps/std_tuple.i
/usr/include/dolfin/swig/typemaps/std_vector.i
/usr/include/dolfin/swig/version.i