/*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);
}
/*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);
}
