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Ignore some ioctls on the master until the slave is open.

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This commit is contained in:
Luoqi Chen 1999-05-14 20:44:20 +00:00
parent 0ce54cbb0c
commit 7af0acae17
1 changed files with 12 additions and 3 deletions
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15
sys/kern/tty_pty.c
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@ -31,7 +31,7 @@
* SUCH DAMAGE.
*
* @(#)tty_pty.c 8.4 (Berkeley) 2/20/95
* $Id: tty_pty.c,v 1.56 1999/04/27 11:16:19 phk Exp $
* $Id: tty_pty.c,v 1.57 1999/05/08 06:39:43 phk Exp $
*/
/*
@ -674,8 +674,7 @@ ptyioctl(dev, cmd, data, flag, p)
tp->t_lflag &= ~EXTPROC;
}
return(0);
} else
if (devsw(dev)->d_open == ptcopen)
} else if (devsw(dev)->d_open == ptcopen) {
switch (cmd) {
case TIOCGPGRP:
@ -711,7 +710,16 @@ ptyioctl(dev, cmd, data, flag, p)
pti->pt_flags &= ~PF_REMOTE;
ttyflush(tp, FREAD|FWRITE);
return (0);
}
/*
* The rest of the ioctls shouldn't be called until
* the slave is open. (Should we return an error?)
*/
if ((tp->t_state & TS_ISOPEN) == 0)
return (0);
switch (cmd) {
#ifdef COMPAT_43
case TIOCSETP:
case TIOCSETN:
@ -735,6 +743,7 @@ ptyioctl(dev, cmd, data, flag, p)
ttyinfo(tp);
return(0);
}
}
error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag, p);
if (error == ENOIOCTL)
error = ttioctl(tp, cmd, data, flag);