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Allow the wsmouse device to be opened for writing even if it is already 

open, this way ioctl() can be performed on it and wsconsctl works.
This commit is contained in:
augustss 1998-12-30 14:02:18 +00:00
parent 44df4dcc85
commit 503bbd973d
1 changed files with 10 additions and 2 deletions
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12
sys/dev/wscons/wsmouse.c
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@ -1,4 +1,4 @@
/* $NetBSD: wsmouse.c,v 1.4 1998/07/27 22:33:22 drochner Exp $ */
/* $NetBSD: wsmouse.c,v 1.5 1998/12/30 14:02:18 augustss Exp $ */
/*
* Copyright (c) 1996, 1997 Christopher G. Demetriou. All rights reserved.
@ -33,7 +33,7 @@
static const char _copyright[] __attribute__ ((unused)) =
"Copyright (c) 1996, 1997 Christopher G. Demetriou. All rights reserved.";
static const char _rcsid[] __attribute__ ((unused)) =
"$NetBSD: wsmouse.c,v 1.4 1998/07/27 22:33:22 drochner Exp $";
"$NetBSD: wsmouse.c,v 1.5 1998/12/30 14:02:18 augustss Exp $";
/*
* Copyright (c) 1992, 1993
@ -86,6 +86,7 @@ static const char _rcsid[] __attribute__ ((unused)) =
#include <sys/param.h>
#include <sys/conf.h>
#include <sys/ioctl.h>
#include <sys/fcntl.h>
#include <sys/kernel.h>
#include <sys/proc.h>
#include <sys/syslog.h>
@ -290,6 +291,10 @@ wsmouseopen(dev, flags, mode, p)
(sc = wsmouse_cd.cd_devs[unit]) == NULL)
return (ENXIO);
if ((flags & (FREAD | FWRITE)) == FWRITE)
return (0); /* always allow open for write
so ioctl() is possible. */
if (sc->sc_events.io) /* and that it's not in use */
return (EBUSY);
@ -328,6 +333,9 @@ wsmouseclose(dev, flags, mode, p)
(sc = wsmouse_cd.cd_devs[unit]) == NULL)
return (ENXIO);
if ((flags & (FREAD | FWRITE)) == FWRITE)
return (0); /* see wsmouseopen() */
(*sc->sc_accessops->disable)(sc->sc_accesscookie);
sc->sc_ready = 0; /* stop accepting events */