396 int tty_establish_ppp (int tty_fd)  in tty_establish_ppp()  argument
403     if (ioctl(tty_fd, TIOCEXCL, 0) < 0) {  in tty_establish_ppp()
423     if (ioctl(tty_fd, TIOCSETD, &ppp_disc) < 0) {  in tty_establish_ppp()
430     ret_fd = generic_establish_ppp(tty_fd);  in tty_establish_ppp()
440 	if (ioctl(tty_fd, TIOCSETD, &tty_disc) < 0 && !ok_error(errno))  in tty_establish_ppp()
548 void tty_disestablish_ppp(int tty_fd)  in tty_disestablish_ppp()  argument
554 	if (tcflush(tty_fd, TCIOFLUSH) < 0)  in tty_disestablish_ppp()
562 	if (ioctl(tty_fd, TIOCSETD, &tty_disc) < 0) {  in tty_disestablish_ppp()
567 	if (ioctl(tty_fd, TIOCNXCL, 0) < 0) {  in tty_disestablish_ppp()
573 	if (initfdflags != -1 && fcntl(tty_fd, F_SETFL, initfdflags) < 0) {  in tty_disestablish_ppp()
581     generic_disestablish_ppp(tty_fd);  in tty_disestablish_ppp()
901 void set_up_tty(int tty_fd, int local)  in set_up_tty()  argument
906     setdtr(tty_fd, 1);  in set_up_tty()
907     if (tcgetattr(tty_fd, &tios) < 0) {  in set_up_tty()
962     while (tcsetattr(tty_fd, TCSAFLUSH, &tios) < 0 && !ok_error(errno))  in set_up_tty()
976 void setdtr (int tty_fd, int on)  in setdtr()  argument
980     ioctl(tty_fd, (on ? TIOCMBIS : TIOCMBIC), &modembits);  in setdtr()
988 void restore_tty (int tty_fd)  in restore_tty()  argument
1001 	if (tcsetattr(tty_fd, TCSAFLUSH, &inittermios) < 0) {  in restore_tty()