getpathname
getpathname(pathbuf, cwd, ino);
getpathname(pathbuf, parent, parent);
void getpathname(char *namebuf, ino_t curdir, ino_t ino);
getpathname(pathbuf, idesc->id_number,
getpathname(pathbuf, idesc->id_number,
getpathname(pathbuf, idesc->id_number,
getpathname(pathbuf, inp->i_number, inp->i_number);
getpathname(pathbuf, inp->i_parent, inp->i_number);
getpathname(pathbuf, inp->i_dotdot, inp->i_dotdot);
getpathname(pathbuf, inp->i_parent, inp->i_parent);
getpathname(dirname, idesc->id_number,
getpathname(newname, idesc->id_number, idesc->id_number);
getpathname(oldname, inp->i_number, inp->i_number);
getpathname(oldname, inp->i_parent, inp->i_number);
getpathname(newname, inp->i_number, inp->i_number);