int
ptsread(dev_t dev, struct uio *uio, int flag)
{
struct proc *p = curproc;
struct process *pr = p->p_p;
struct pt_softc *pti = pt_softc[minor(dev)];
struct tty *tp = pti->pt_tty;
int error = 0;
again:
if (pti->pt_flags & PF_REMOTE) {
while (isbackground(pr, tp)) {
if ((p->p_sigacts->ps_sigignore & sigmask(SIGTTIN)) ||
(p->p_sigmask & sigmask(SIGTTIN)) ||
pr->ps_pgrp->pg_jobc == 0 ||
pr->ps_flags & PS_PPWAIT)
return (EIO);
pgsignal(pr->ps_pgrp, SIGTTIN, 1);
error = ttysleep(tp, &lbolt,
TTIPRI | PCATCH, ttybg, 0);
if (error)
return (error);
}
if (tp->t_canq.c_cc == 0) {
if (flag & IO_NDELAY)
return (EWOULDBLOCK);
error = ttysleep(tp, &tp->t_canq,
TTIPRI | PCATCH, ttyin, 0);
if (error)
return (error);
goto again;
}
while (tp->t_canq.c_cc > 1 && uio->uio_resid > 0)
if (ureadc(getc(&tp->t_canq), uio) < 0) {
error = EFAULT;
break;
}
if (tp->t_canq.c_cc == 1)
(void) getc(&tp->t_canq);
if (tp->t_canq.c_cc)
return (error);
} else
if (tp->t_oproc)
error = (*linesw[tp->t_line].l_read)(tp, uio, flag);
ptcwakeup(tp, FWRITE);
return (error);
}
/*ARGSUSED*/
int
ptyioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p)
{
struct pt_softc *pti = pt_softc[minor(dev)];
struct tty *tp = pti->pt_tty;
u_char *cc = tp->t_cc;
int stop, error;
/*
* IF CONTROLLER STTY THEN MUST FLUSH TO PREVENT A HANG.
* ttywflush(tp) will hang if there are characters in the outq.
*/
if (cmd == TIOCEXT) {
/*
* When the EXTPROC bit is being toggled, we need
* to send an TIOCPKT_IOCTL if the packet driver
* is turned on.
*/
if (*(int *)data) {
if (pti->pt_flags & PF_PKT) {
pti->pt_send |= TIOCPKT_IOCTL;
ptcwakeup(tp, FREAD);
}
tp->t_lflag |= EXTPROC;
} else {
if ((tp->t_lflag & EXTPROC) &&
(pti->pt_flags & PF_PKT)) {
pti->pt_send |= TIOCPKT_IOCTL;
ptcwakeup(tp, FREAD);
}
tp->t_lflag &= ~EXTPROC;
}
return(0);
} else if (cdevsw[major(dev)].d_open == ptcopen)
switch (cmd) {
case TIOCGPGRP:
#ifdef COMPAT_SUNOS
{
/*
* I'm not sure about SunOS TIOCGPGRP semantics
* on PTYs, but it's something like this:
*/
extern struct emul emul_sunos;
if (p->p_emul == &emul_sunos) {
if (tp->t_pgrp == 0)
return (EIO);
*(int *)data = tp->t_pgrp->pg_id;
return (0);
}
}
#endif
/*
* We avoid calling ttioctl on the controller since,
* in that case, tp must be the controlling terminal.
*/
*(int *)data = tp->t_pgrp ? tp->t_pgrp->pg_id : 0;
return (0);
case TIOCPKT:
if (*(int *)data) {
if (pti->pt_flags & PF_UCNTL)
return (EINVAL);
pti->pt_flags |= PF_PKT;
} else
pti->pt_flags &= ~PF_PKT;
return (0);
case TIOCUCNTL:
if (*(int *)data) {
if (pti->pt_flags & PF_PKT)
return (EINVAL);
pti->pt_flags |= PF_UCNTL;
} else
pti->pt_flags &= ~PF_UCNTL;
return (0);
case TIOCREMOTE:
if (*(int *)data)
pti->pt_flags |= PF_REMOTE;
else
pti->pt_flags &= ~PF_REMOTE;
ttyflush(tp, FREAD|FWRITE);
return (0);
#ifdef COMPAT_OLDTTY
case TIOCSETP:
case TIOCSETN:
#endif
case TIOCSETD:
case TIOCSETA:
case TIOCSETAW:
case TIOCSETAF:
ndflush(&tp->t_outq, tp->t_outq.c_cc);
break;
case TIOCSIG:
if (*(unsigned int *)data >= NSIG ||
*(unsigned int *)data == 0)
return(EINVAL);
if ((tp->t_lflag&NOFLSH) == 0)
ttyflush(tp, FREAD|FWRITE);
pgsignal(tp->t_pgrp, *(unsigned int *)data, 1);
if ((*(unsigned int *)data == SIGINFO) &&
((tp->t_lflag&NOKERNINFO) == 0))
ttyinfo(tp);
return(0);
}
error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag, p);
if (error < 0)
error = ttioctl(tp, cmd, data, flag, p);
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_OLDTTY
case TIOCSETP:
case TIOCSETN:
case TIOCSETC:
case TIOCSLTC:
case TIOCLBIS:
case TIOCLBIC:
case TIOCLSET:
#endif
pti->pt_send |= TIOCPKT_IOCTL;
ptcwakeup(tp, FREAD);
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);
}
}
return (error);
}
int
sc_set_pixel_mode(scr_stat *scp, struct tty *tp, int xsize, int ysize,
int fontsize, int fontwidth)
{
#ifndef SC_PIXEL_MODE
return ENODEV;
#else
video_info_t info;
u_char *font;
int prev_ysize;
int error;
int s;
if (vidd_get_info(scp->sc->adp, scp->mode, &info))
return ENODEV; /* this shouldn't happen */
/* adjust argument values */
if (fontsize <= 0)
fontsize = info.vi_cheight;
if (fontsize < 14) {
fontsize = 8;
#ifndef SC_NO_FONT_LOADING
if (!(scp->sc->fonts_loaded & FONT_8))
return EINVAL;
font = scp->sc->font_8;
#else
font = NULL;
#endif
} else if (fontsize >= 16) {
fontsize = 16;
#ifndef SC_NO_FONT_LOADING
if (!(scp->sc->fonts_loaded & FONT_16))
return EINVAL;
font = scp->sc->font_16;
#else
font = NULL;
#endif
} else {
fontsize = 14;
#ifndef SC_NO_FONT_LOADING
if (!(scp->sc->fonts_loaded & FONT_14))
return EINVAL;
font = scp->sc->font_14;
#else
font = NULL;
#endif
}
if (xsize <= 0)
xsize = info.vi_width/8;
if (ysize <= 0)
ysize = info.vi_height/fontsize;
if ((info.vi_width < xsize*8) || (info.vi_height < ysize*fontsize))
return EINVAL;
/*
* We currently support the following graphic modes:
*
* - 4 bpp planar modes whose memory size does not exceed 64K
* - 15, 16, 24 and 32 bpp linear modes
*/
if (info.vi_mem_model == V_INFO_MM_PLANAR) {
if (info.vi_planes != 4)
return ENODEV;
/*
* A memory size >64K requires bank switching to access the entire
* screen. XXX
*/
if (info.vi_width * info.vi_height / 8 > info.vi_window_size)
return ENODEV;
} else if (info.vi_mem_model == V_INFO_MM_DIRECT) {
if (!(info.vi_flags & V_INFO_LINEAR) &&
(info.vi_depth != 15) && (info.vi_depth != 16) &&
(info.vi_depth != 24) && (info.vi_depth != 32))
return ENODEV;
} else
return ENODEV;
/* stop screen saver, etc */
s = spltty();
if ((error = sc_clean_up(scp))) {
splx(s);
return error;
}
if (sc_render_match(scp, scp->sc->adp->va_name, PIXEL_MODE) == NULL) {
splx(s);
return ENODEV;
}
#if 0
if (scp->tsw)
(*scp->tsw->te_term)(scp, scp->ts);
scp->tsw = NULL;
scp->ts = NULL;
#endif
/* set up scp */
#ifndef SC_NO_HISTORY
if (scp->history != NULL)
sc_hist_save(scp);
#endif
prev_ysize = scp->ysize;
scp->status |= (UNKNOWN_MODE | PIXEL_MODE | MOUSE_HIDDEN);
scp->status &= ~(GRAPHICS_MODE | MOUSE_VISIBLE);
scp->xsize = xsize;
scp->ysize = ysize;
scp->xoff = (scp->xpixel/8 - xsize)/2;
scp->yoff = (scp->ypixel/fontsize - ysize)/2;
scp->font = font;
scp->font_size = fontsize;
scp->font_width = fontwidth;
/* allocate buffers */
sc_alloc_scr_buffer(scp, TRUE, TRUE);
sc_init_emulator(scp, NULL);
#ifndef SC_NO_CUTPASTE
sc_alloc_cut_buffer(scp, FALSE);
#endif
#ifndef SC_NO_HISTORY
sc_alloc_history_buffer(scp, 0, prev_ysize, FALSE);
#endif
splx(s);
if (scp == scp->sc->cur_scp) {
sc_set_border(scp, scp->border);
sc_set_cursor_image(scp);
}
scp->status &= ~UNKNOWN_MODE;
if (tp == NULL)
return 0;
if (tp->t_winsize.ws_col != scp->xsize
|| tp->t_winsize.ws_row != scp->ysize) {
tp->t_winsize.ws_col = scp->xsize;
tp->t_winsize.ws_row = scp->ysize;
if (tp->t_pgrp != NULL) {
PGRP_LOCK(tp->t_pgrp);
pgsignal(tp->t_pgrp, SIGWINCH, 1);
PGRP_UNLOCK(tp->t_pgrp);
}
}
return 0;
#endif /* SC_PIXEL_MODE */
}
int
sc_set_pixel_mode(scr_stat *scp, struct tty *tp, int xsize, int ysize,
int fontsize, int fontwidth)
{
#ifndef SC_PIXEL_MODE
return ENODEV;
#else
video_info_t info;
ksiginfo_t ksi;
u_char *font;
int prev_ysize;
int error;
int s;
if (vidd_get_info(scp->sc->adp, scp->mode, &info))
return ENODEV; /* this shouldn't happen */
/* adjust argument values */
if (fontsize <= 0)
fontsize = info.vi_cheight;
if (fontsize < 14)
fontsize = 8;
else if (fontsize >= 16)
fontsize = 16;
else
fontsize = 14;
#ifndef SC_NO_FONT_LOADING
switch (fontsize) {
case 8:
if ((scp->sc->fonts_loaded & FONT_8) == 0)
return (EINVAL);
font = scp->sc->font_8;
break;
case 14:
if ((scp->sc->fonts_loaded & FONT_14) == 0)
return (EINVAL);
font = scp->sc->font_14;
break;
case 16:
if ((scp->sc->fonts_loaded & FONT_16) == 0)
return (EINVAL);
font = scp->sc->font_16;
break;
}
#else
font = NULL;
#endif
if (xsize <= 0)
xsize = info.vi_width/8;
if (ysize <= 0)
ysize = info.vi_height/fontsize;
if ((info.vi_width < xsize*8) || (info.vi_height < ysize*fontsize))
return EINVAL;
if (!sc_support_pixel_mode(&info))
return ENODEV;
/* stop screen saver, etc */
s = spltty();
if ((error = sc_clean_up(scp))) {
splx(s);
return error;
}
if (sc_render_match(scp, scp->sc->adp->va_name, PIXEL_MODE) == NULL) {
splx(s);
return ENODEV;
}
#if 0
if (scp->tsw)
(*scp->tsw->te_term)(scp, scp->ts);
scp->tsw = NULL;
scp->ts = NULL;
#endif
/* set up scp */
#ifndef SC_NO_HISTORY
if (scp->history != NULL)
sc_hist_save(scp);
#endif
prev_ysize = scp->ysize;
scp->status |= (UNKNOWN_MODE | PIXEL_MODE | MOUSE_HIDDEN);
scp->status &= ~(GRAPHICS_MODE | MOUSE_VISIBLE);
scp->xsize = xsize;
scp->ysize = ysize;
scp->xoff = (scp->xpixel/8 - xsize)/2;
scp->yoff = (scp->ypixel/fontsize - ysize)/2;
scp->font = font;
scp->font_size = fontsize;
scp->font_width = fontwidth;
/* allocate buffers */
sc_alloc_scr_buffer(scp, TRUE, TRUE);
sc_init_emulator(scp, NULL);
#ifndef SC_NO_CUTPASTE
sc_alloc_cut_buffer(scp, FALSE);
#endif
#ifndef SC_NO_HISTORY
sc_alloc_history_buffer(scp, 0, prev_ysize, FALSE);
#endif
splx(s);
if (scp == scp->sc->cur_scp) {
sc_set_border(scp, scp->border);
sc_set_cursor_image(scp);
}
scp->status &= ~UNKNOWN_MODE;
if (tp == NULL)
return 0;
if (tp->t_winsize.ws_col != scp->xsize
|| tp->t_winsize.ws_row != scp->ysize) {
tp->t_winsize.ws_col = scp->xsize;
tp->t_winsize.ws_row = scp->ysize;
if (tp->t_pgrp != NULL) {
ksiginfo_init(&ksi);
ksi.ksi_signo = SIGWINCH;
ksi.ksi_code = SI_KERNEL;
PGRP_LOCK(tp->t_pgrp);
pgsignal(tp->t_pgrp, SIGWINCH, 1, &ksi);
PGRP_UNLOCK(tp->t_pgrp);
}
}
return 0;
#endif /* SC_PIXEL_MODE */
}
static int
ptsread(struct dev_read_args *ap)
{
cdev_t dev = ap->a_head.a_dev;
struct proc *p = curproc;
struct tty *tp = dev->si_tty;
struct pt_ioctl *pti = dev->si_drv1;
struct lwp *lp;
int error = 0;
lp = curthread->td_lwp;
lwkt_gettoken(&tty_token);
again:
if (pti->pt_flags & PF_REMOTE) {
while (isbackground(p, tp)) {
if (SIGISMEMBER(p->p_sigignore, SIGTTIN) ||
SIGISMEMBER(lp->lwp_sigmask, SIGTTIN) ||
p->p_pgrp->pg_jobc == 0 ||
(p->p_flags & P_PPWAIT)) {
lwkt_reltoken(&tty_token);
return (EIO);
}
pgsignal(p->p_pgrp, SIGTTIN, 1);
error = ttysleep(tp, &lbolt, PCATCH, "ptsbg", 0);
if (error) {
lwkt_reltoken(&tty_token);
return (error);
}
}
if (tp->t_canq.c_cc == 0) {
if (ap->a_ioflag & IO_NDELAY) {
lwkt_reltoken(&tty_token);
return (EWOULDBLOCK);
}
error = ttysleep(tp, TSA_PTS_READ(tp), PCATCH,
"ptsin", 0);
if (error) {
lwkt_reltoken(&tty_token);
return (error);
}
goto again;
}
while (tp->t_canq.c_cc > 1 && ap->a_uio->uio_resid > 0)
if (ureadc(clist_getc(&tp->t_canq), ap->a_uio) < 0) {
error = EFAULT;
break;
}
if (tp->t_canq.c_cc == 1)
clist_getc(&tp->t_canq);
if (tp->t_canq.c_cc) {
lwkt_reltoken(&tty_token);
return (error);
}
} else
if (tp->t_oproc)
error = (*linesw[tp->t_line].l_read)(tp, ap->a_uio, ap->a_ioflag);
ptcwakeup(tp, FWRITE);
lwkt_reltoken(&tty_token);
return (error);
}
/*ARGSUSED*/
static int
ptyioctl(struct dev_ioctl_args *ap)
{
cdev_t dev = ap->a_head.a_dev;
struct tty *tp = dev->si_tty;
struct pt_ioctl *pti = dev->si_drv1;
u_char *cc = tp->t_cc;
int stop, error;
lwkt_gettoken(&tty_token);
if (dev_dflags(dev) & D_MASTER) {
switch (ap->a_cmd) {
case TIOCGPGRP:
/*
* We avoid calling ttioctl on the controller since,
* in that case, tp must be the controlling terminal.
*/
*(int *)ap->a_data = tp->t_pgrp ? tp->t_pgrp->pg_id : 0;
lwkt_reltoken(&tty_token);
return (0);
case TIOCPKT:
if (*(int *)ap->a_data) {
if (pti->pt_flags & PF_UCNTL) {
lwkt_reltoken(&tty_token);
return (EINVAL);
}
pti->pt_flags |= PF_PKT;
} else {
pti->pt_flags &= ~PF_PKT;
}
lwkt_reltoken(&tty_token);
return (0);
case TIOCUCNTL:
if (*(int *)ap->a_data) {
if (pti->pt_flags & PF_PKT) {
lwkt_reltoken(&tty_token);
return (EINVAL);
}
pti->pt_flags |= PF_UCNTL;
} else {
pti->pt_flags &= ~PF_UCNTL;
}
lwkt_reltoken(&tty_token);
return (0);
case TIOCREMOTE:
if (*(int *)ap->a_data)
pti->pt_flags |= PF_REMOTE;
else
pti->pt_flags &= ~PF_REMOTE;
ttyflush(tp, FREAD|FWRITE);
lwkt_reltoken(&tty_token);
return (0);
#ifdef UNIX98_PTYS
case TIOCISPTMASTER:
if ((pti->pt_flags & PF_UNIX98) &&
(pti->devc == dev)) {
lwkt_reltoken(&tty_token);
return (0);
} else {
lwkt_reltoken(&tty_token);
return (EINVAL);
}
}
#endif
/*
* The rest of the ioctls shouldn't be called until
* the slave is open.
*/
if ((tp->t_state & TS_ISOPEN) == 0) {
lwkt_reltoken(&tty_token);
return (EAGAIN);
}
switch (ap->a_cmd) {
#ifdef COMPAT_43
case TIOCSETP:
case TIOCSETN:
#endif
case TIOCSETD:
case TIOCSETA:
case TIOCSETAW:
case TIOCSETAF:
/*
* IF CONTROLLER STTY THEN MUST FLUSH TO PREVENT A HANG.
* ttywflush(tp) will hang if there are characters in
* the outq.
*/
ndflush(&tp->t_outq, tp->t_outq.c_cc);
break;
case TIOCSIG:
if (*(unsigned int *)ap->a_data >= NSIG ||
*(unsigned int *)ap->a_data == 0) {
lwkt_reltoken(&tty_token);
return(EINVAL);
}
if ((tp->t_lflag&NOFLSH) == 0)
ttyflush(tp, FREAD|FWRITE);
pgsignal(tp->t_pgrp, *(unsigned int *)ap->a_data, 1);
if ((*(unsigned int *)ap->a_data == SIGINFO) &&
((tp->t_lflag&NOKERNINFO) == 0))
ttyinfo(tp);
lwkt_reltoken(&tty_token);
return(0);
}
}
if (ap->a_cmd == TIOCEXT) {
/*
* When the EXTPROC bit is being toggled, we need
* to send an TIOCPKT_IOCTL if the packet driver
* is turned on.
*/
if (*(int *)ap->a_data) {
if (pti->pt_flags & PF_PKT) {
pti->pt_send |= TIOCPKT_IOCTL;
ptcwakeup(tp, FREAD);
}
tp->t_lflag |= EXTPROC;
} else {
if ((tp->t_lflag & EXTPROC) &&
(pti->pt_flags & PF_PKT)) {
pti->pt_send |= TIOCPKT_IOCTL;
ptcwakeup(tp, FREAD);
}
tp->t_lflag &= ~EXTPROC;
}
lwkt_reltoken(&tty_token);
return(0);
}
error = (*linesw[tp->t_line].l_ioctl)(tp, ap->a_cmd, ap->a_data,
ap->a_fflag, ap->a_cred);
if (error == ENOIOCTL)
error = ttioctl(tp, ap->a_cmd, ap->a_data, ap->a_fflag);
if (error == ENOIOCTL) {
if (pti->pt_flags & PF_UCNTL &&
(ap->a_cmd & ~0xff) == UIOCCMD(0)) {
if (ap->a_cmd & 0xff) {
pti->pt_ucntl = (u_char)ap->a_cmd;
ptcwakeup(tp, FREAD);
}
lwkt_reltoken(&tty_token);
return (0);
}
error = ENOTTY;
}
/*
* If external processing and packet mode send ioctl packet.
*/
if ((tp->t_lflag&EXTPROC) && (pti->pt_flags & PF_PKT)) {
switch(ap->a_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;
ptcwakeup(tp, FREAD);
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);
}
}
lwkt_reltoken(&tty_token);
return (error);
}
/*
* Process an input character, with input processing
* return -1, if queue full.
*/
int ttinput(int c, TTY tp)
{
USHORT lflag = tp->t_lflag;
char far *cc = tp->t_cc;
CQ rq = &tp->inq;
int nocan = ISCLR(lflag,ICANON);
int ret = 0;
/* only 8 or 7 bits */
c &= (tp->t_iflag & ISTRIP ? 0x7f : 0xff);
/* filter out CR LF sequences, store as LF only */
if (c==0x0d)
{
if (ISSET(tp->t_iflag, IGNCR)) // Ignore CR on input
{
BSET(tp->state,ST_CRSEEN);
return 0;
}
else if (ISSET(tp->t_iflag, ICRNL)) // Translate CR -> NR on input
c = 0x0a;
}
else if (c != 0x0a && ISSET(tp->state,ST_CRSEEN))
{
/* out of band CR, ok */
BCLR(tp->state,ST_CRSEEN);
if (putc(0x0d,rq) < 0)
return -1;
if (nocan)
ret = ttecho(0x0d, tp);
}
else if ( c == 0x0a && ISSET(tp->t_iflag, INLCR))
{
BCLR(tp->state, ST_CRSEEN);
c = 0x0d;
}
else if (ISCLR(lflag,EXTPROC))
{
BCLR(tp->state,ST_CRSEEN);
/* internal processing */
if (ISSET(lflag,ISIG))
{
if (CCEQ(cc[VINTR],c) /*|| CCEQ(cc[VQUIT],c)*/)
{
if (ISCLR(lflag,NOFLSH))
ttflush(tp,3);
ttecho(c,tp);
pgsignal(tp->pgrp, SIGINT);
goto endproc;
}
}
}
else
/* else was an LF or no CRSEEN */
BCLR(tp->state,ST_CRSEEN);
if (ret >= 0)
{
/* regular char or CR/LF: put in queue */
if (putc(c,rq) >= 0)
{
if (nocan)
ret = ttecho(c,tp);
}
}
endproc:
/* reaches here if something has been processed */
ttstart(tp);
return ret;
}
