getpathname
getpathname(pathbuf, cwd, ino);
getpathname(pathbuf, parent, parent);
extern void getpathname(char *, ufs1_ino_t, ufs1_ino_t);
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, idesc->id_number,
getpathname(namebuf, dirp->d_ino, dirp->d_ino);
ret = getpathname(getpid(), dir, sizeof(dir));