pppwrite           74 kern/tty_conf.c int	pppwrite(struct tty *tp, struct uio *uio, int flag);
pppwrite          123 kern/tty_conf.c 	{ pppopen, pppclose, pppread, pppwrite, ppptioctl,
pppwrite          132 net/ppp_tty.c  int	pppwrite(struct tty *tp, struct uio *uio, int flag);