+ (void) q_to_b(&pti->pt_ioc, data,
+ pti->pt_ioc.c_cc);
+ }
+ while (pti->pt_ioc.c_cc)
+ (void) getc(&pti->pt_ioc);
+ if (pti->pt_flags & PF_WIOC)
+ wakeup((caddr_t)&pti->pt_flags);
+ if (pti->pt_flags & PF_OWAIT)
+ wakeup((caddr_t)pti + 1);
+ pti->pt_flags &= ~(PF_LIOC|PF_WIOC|PF_BLOCK|PF_OWAIT);
+ ptswake(tp);
+ return (error);
+ }
+
+ doioctl:
+ error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag, p);
+ if (error < 0)
+ error = ttioctl(tp, cmd, data, flag);
+
+ if (error < 0) {
+ if (pti->pt_flags & PF_UCNTL &&
+ (cmd & ~0xff) == UIOCCMD(0)) {
+ if (cmd & 0xff) {
+ pti->pt_ucntl = (u_char)cmd;
+ ptcwakeup(tp, FREAD);
+ }
+ return (0);
+ }
+ error = ENOTTY;
+ }
+ /*
+ * If external processing and packet mode send ioctl packet.
+ */
+ if ((tp->t_lflag&EXTPROC) && (pti->pt_flags & PF_PKT)) {
+ switch(cmd) {
+ case TIOCSETA:
+ case TIOCSETAW:
+ case TIOCSETAF:
+#ifdef COMPAT_43
+ case TIOCSETP:
+ case TIOCSETN:
+#endif
+#if defined(COMPAT_43) || defined(COMPAT_SUNOS)
+ case TIOCSETC:
+ case TIOCSLTC:
+ case TIOCLBIS:
+ case TIOCLBIC:
+ case TIOCLSET:
+#endif
+ pti->pt_send |= TIOCPKT_IOCTL;
+ default:
+ break;
+ }
+ }
+ stop = (tp->t_iflag & IXON) && CCEQ(cc[VSTOP], CTRL('s'))
+ && CCEQ(cc[VSTART], CTRL('q'));
+ if (pti->pt_flags & PF_NOSTOP) {
+ if (stop) {
+ pti->pt_send &= ~TIOCPKT_NOSTOP;
+ pti->pt_send |= TIOCPKT_DOSTOP;
+ pti->pt_flags &= ~PF_NOSTOP;
+ ptcwakeup(tp, FREAD);
+ }
+ } else {
+ if (!stop) {
+ pti->pt_send &= ~TIOCPKT_DOSTOP;
+ pti->pt_send |= TIOCPKT_NOSTOP;
+ pti->pt_flags |= PF_NOSTOP;
+ ptcwakeup(tp, FREAD);