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

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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 */