Dtrace no longer have access to HFS data structures

HI all,

With DSCript, I used to write the following script to retreive inode value for a given file handles.

    fi_inode = (F == NULL) ? 0 :
            F->fg_ops->fo_type != DTYPE_VNODE ? 0:
            ((struct vnode *) F->fg_data)->v_tag != 16 ? 0:  / HFS */
            ((struct cnode*) ((struct vnode *) F->fg_data)->v_data)->c_attr.ca_fileid;

However, from OSX Sierra kernel (xnu-3789.21.4), I found out that code for HFS is separated as a different source base.

As a result, above Dscript which used to work for previous versions of OSX up to 10.11 stopped to working since struct cnode which is defined from hfs_internals.h now included from hfs source base and is no longer visible from xnu kernel.

Would you let me know how to resolve this issue?

Thanks!