mdb_ddi_pathname
extern char *mdb_ddi_pathname(uintptr_t, char *, size_t);
(void) mdb_ddi_pathname(parent_dip, path, pathlen);
extern char *mdb_ddi_pathname(uintptr_t, char *, size_t);
mdb_ddi_pathname(paddr, strbuf, STRLEN);
(void) mdb_ddi_pathname(dip_addr, pathname, sizeof (pathname));
(void) mdb_ddi_pathname(