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Enabled Lite2 fix for reading from dead ttys.

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This commit is contained in:
Bruce Evans 1998-08-23 11:43:29 +00:00
parent 1fcee46997
commit 4e9a89772a
4 changed files with 6 additions and 42 deletions
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11
sys/fs/deadfs/dead_vnops.c
View File

@ -31,7 +31,7 @@
* SUCH DAMAGE.
*
* @(#)dead_vnops.c 8.1 (Berkeley) 6/10/93
* $Id: dead_vnops.c,v 1.22 1997/12/05 19:55:41 bde Exp $
* $Id: dead_vnops.c,v 1.23 1997/12/15 03:09:44 wollman Exp $
*/
#include <sys/param.h>
@ -144,20 +144,11 @@ dead_read(ap)
if (chkvnlock(ap->a_vp))
panic("dead_read: lock");
#if 0
/* Lite2 behaviour */
/*
* Return EOF for tty devices, EIO for others
*/
if ((ap->a_vp->v_flag & VISTTY) == 0)
return (EIO);
#else
/*
* Return EOF for character devices, EIO for others
*/
if (ap->a_vp->v_type != VCHR)
return (EIO);
#endif
return (0);
}

13
sys/fs/specfs/spec_vnops.c
View File

@ -31,7 +31,7 @@
* SUCH DAMAGE.
*
* @(#)spec_vnops.c 8.14 (Berkeley) 5/21/95
* $Id: spec_vnops.c,v 1.66 1998/07/11 07:45:48 bde Exp $
* $Id: spec_vnops.c,v 1.67 1998/07/15 02:32:22 bde Exp $
*/
#include <sys/param.h>
@ -202,17 +202,8 @@ spec_open(ap)
return (EPERM);
}
}
#if 0
/*
* Lite2 stuff. We will almost certainly do this
* differently with devfs. The only use of this flag
* is in dead_read to make ttys return EOF instead of
* EIO when they are dead. Pre-lite2 FreeBSD returns
* EOF for all character devices.
*/
if (cdevsw[maj]->d_type == D_TTY)
if ((cdevsw[maj]->d_flags & D_TYPEMASK) == D_TTY)
vp->v_flag |= VISTTY;
#endif
VOP_UNLOCK(vp, 0, p);
error = (*cdevsw[maj]->d_open)(dev, ap->a_mode, S_IFCHR, p);
vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, p);

11
sys/miscfs/deadfs/dead_vnops.c
View File

@ -31,7 +31,7 @@
* SUCH DAMAGE.
*
* @(#)dead_vnops.c 8.1 (Berkeley) 6/10/93
* $Id: dead_vnops.c,v 1.22 1997/12/05 19:55:41 bde Exp $
* $Id: dead_vnops.c,v 1.23 1997/12/15 03:09:44 wollman Exp $
*/
#include <sys/param.h>
@ -144,20 +144,11 @@ dead_read(ap)
if (chkvnlock(ap->a_vp))
panic("dead_read: lock");
#if 0
/* Lite2 behaviour */
/*
* Return EOF for tty devices, EIO for others
*/
if ((ap->a_vp->v_flag & VISTTY) == 0)
return (EIO);
#else
/*
* Return EOF for character devices, EIO for others
*/
if (ap->a_vp->v_type != VCHR)
return (EIO);
#endif
return (0);
}

13
sys/miscfs/specfs/spec_vnops.c
View File

@ -31,7 +31,7 @@
* SUCH DAMAGE.
*
* @(#)spec_vnops.c 8.14 (Berkeley) 5/21/95
* $Id: spec_vnops.c,v 1.66 1998/07/11 07:45:48 bde Exp $
* $Id: spec_vnops.c,v 1.67 1998/07/15 02:32:22 bde Exp $
*/
#include <sys/param.h>
@ -202,17 +202,8 @@ spec_open(ap)
return (EPERM);
}
}
#if 0
/*
* Lite2 stuff. We will almost certainly do this
* differently with devfs. The only use of this flag
* is in dead_read to make ttys return EOF instead of
* EIO when they are dead. Pre-lite2 FreeBSD returns
* EOF for all character devices.
*/
if (cdevsw[maj]->d_type == D_TTY)
if ((cdevsw[maj]->d_flags & D_TYPEMASK) == D_TTY)
vp->v_flag |= VISTTY;
#endif
VOP_UNLOCK(vp, 0, p);
error = (*cdevsw[maj]->d_open)(dev, ap->a_mode, S_IFCHR, p);
vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, p);