/usr/include/dolfin/function/ is in libdolfin-dev 1.4.0+dfsg-4.
This file is owned by root:root, with mode 0o755.
..
/usr/include/dolfin/function/CCFEMFunction.h
/usr/include/dolfin/function/CCFEMFunctionSpace.h
/usr/include/dolfin/function/CoefficientAssigner.h
/usr/include/dolfin/function/Constant.h
/usr/include/dolfin/function/Expression.h
/usr/include/dolfin/function/Function.h
/usr/include/dolfin/function/FunctionAXPY.h
/usr/include/dolfin/function/FunctionAssigner.h
/usr/include/dolfin/function/FunctionSpace.h
/usr/include/dolfin/function/GenericFunction.h
/usr/include/dolfin/function/LagrangeInterpolator.h
/usr/include/dolfin/function/SpecialFacetFunction.h
/usr/include/dolfin/function/SpecialFunctions.h
/usr/include/dolfin/function/SubSpace.h
/usr/include/dolfin/function/assign.h
/usr/include/dolfin/function/dolfin_function.h