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Much better fix for the hanging console problem. This one actually

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works.
This commit is contained in:
David Greenman 1994-01-23 19:17:17 +00:00
parent 8213aabbd8
commit 1b9d391946
2 changed files with 28 additions and 2 deletions
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15
sys/i386/i386/cons.c
View File

@ -36,7 +36,7 @@
* SUCH DAMAGE.
*
* from: @(#)cons.c 7.2 (Berkeley) 5/9/91
* $Id: cons.c,v 1.8 1994/01/22 22:48:21 davidg Exp $
* $Id: cons.c,v 1.9 1994/01/23 17:50:11 davidg Exp $
*/
@ -49,6 +49,7 @@
#include "sys/tty.h"
#include "sys/file.h"
#include "sys/conf.h"
#include "sys/vnode.h"
#include "machine/stdarg.h"
#include "machine/cons.h"
@ -115,9 +116,15 @@ cnopen(dev, flag, mode, p)
int flag, mode;
struct proc *p;
{
struct vnode *vp = 0;
if (cn_tab == NULL)
return (0);
dev = cn_tab->cn_dev;
if ((vfinddev(dev, VCHR, &vp) == 0) && vcount(vp))
return (0);
return ((*cdevsw[major(dev)].d_open)(dev, flag, mode, p));
}
@ -127,9 +134,15 @@ cnclose(dev, flag, mode, p)
int flag, mode;
struct proc *p;
{
struct vnode *vp = 0;
if (cn_tab == NULL)
return (0);
dev = cn_tab->cn_dev;
if ((vfinddev(dev, VCHR, &vp) == 0) && vcount(vp))
return (0);
return ((*cdevsw[major(dev)].d_close)(dev, flag, mode, p));
}

15
sys/kern/tty_cons.c
View File

@ -36,7 +36,7 @@
* SUCH DAMAGE.
*
* from: @(#)cons.c 7.2 (Berkeley) 5/9/91
* $Id: cons.c,v 1.8 1994/01/22 22:48:21 davidg Exp $
* $Id: cons.c,v 1.9 1994/01/23 17:50:11 davidg Exp $
*/
@ -49,6 +49,7 @@
#include "sys/tty.h"
#include "sys/file.h"
#include "sys/conf.h"
#include "sys/vnode.h"
#include "machine/stdarg.h"
#include "machine/cons.h"
@ -115,9 +116,15 @@ cnopen(dev, flag, mode, p)
int flag, mode;
struct proc *p;
{
struct vnode *vp = 0;
if (cn_tab == NULL)
return (0);
dev = cn_tab->cn_dev;
if ((vfinddev(dev, VCHR, &vp) == 0) && vcount(vp))
return (0);
return ((*cdevsw[major(dev)].d_open)(dev, flag, mode, p));
}
@ -127,9 +134,15 @@ cnclose(dev, flag, mode, p)
int flag, mode;
struct proc *p;
{
struct vnode *vp = 0;
if (cn_tab == NULL)
return (0);
dev = cn_tab->cn_dev;
if ((vfinddev(dev, VCHR, &vp) == 0) && vcount(vp))
return (0);
return ((*cdevsw[major(dev)].d_close)(dev, flag, mode, p));
}