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/* $OpenBSD: xfs_dev-bsd.c,v 1.2 2000/03/03 00:54:58 todd Exp $ */
/*
* Copyright (c) 1995, 1996, 1997, 1998 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the Kungliga Tekniska
* Högskolan and its contributors.
*
* 4. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <xfs/xfs_locl.h>
#include <xfs/xfs_message.h>
#include <xfs/xfs_msg_locl.h>
#include <xfs/xfs_fs.h>
#include <xfs/xfs_dev.h>
#include <xfs/xfs_deb.h>
RCSID("$OpenBSD: xfs_dev-bsd.c,v 1.2 2000/03/03 00:54:58 todd Exp $");
int
xfs_devopen(dev_t dev, int flag, int devtype, struct proc *proc)
{
XFSDEB(XDEBDEV, ("xfsopen dev = %d.%d, flag = %d, devtype = %d\n",
major(dev), minor(dev), flag, devtype));
return xfs_devopen_common(dev);
}
/* XXX ugly function so we can keep xfs_devopen static */
int
xfs_func_is_devopen(void *func)
{
return func == (void*)&xfs_devopen;
}
int
xfs_devclose(dev_t dev, int flag, int devtype, struct proc *p)
{
XFSDEB(XDEBDEV, ("xfs_devclose dev = %d, flag = %d\n", dev, flag));
return xfs_devclose_common(dev, p);
}
/*
* Not used.
*/
int
xfs_devioctl(dev_t dev,
#if defined(__NetBSD__) || defined(__OpenBSD__)
u_long cmd,
#elif defined(__FreeBSD__)
int cmd,
#endif
caddr_t data, int flags, struct proc *p)
{
XFSDEB(XDEBDEV, ("xfs_devioctl dev = %d.%d, cmd = %lu, "
"data = %p, flags = %x\n",
major(dev), minor(dev), (unsigned long)cmd, data, flags));
return ENOTTY;
}
static int
xfs_realselect(dev_t dev, struct proc *p)
{
struct xfs_channel *chan = &xfs_channel[minor(dev)];
if (!xfs_emptyq(&chan->messageq))
return 1; /* Something to read */
selrecord (p, &chan->selinfo);
return 0;
}
#ifdef HAVE_VOP_POLL
static int
xfs_devpoll(dev_t dev, int events, struct proc * p)
{
XFSDEB(XDEBDEV, ("xfs_devpoll dev = %d, events = %d\n", dev, events));
if (!(events & POLLRDNORM))
return 0;
return xfs_realselect(dev, p);
}
#endif
#ifdef HAVE_VOP_SELECT
int
xfs_devselect(dev_t dev, int which, struct proc * p)
{
XFSDEB(XDEBDEV, ("xfs_devselect dev = %d, which = %d\n", dev, which));
if (which != FREAD)
return 0;
return xfs_realselect(dev, p);
}
#endif
void
xfs_select_wakeup(struct xfs_channel *chan)
{
selwakeup (&chan->selinfo);
}
/*
* Install and uninstall device.
*/
#if defined(__NetBSD__)
struct cdevsw xfs_dev = {
xfs_devopen,
xfs_devclose,
xfs_devread,
xfs_devwrite,
xfs_devioctl,
(dev_type_stop((*))) enodev,
0,
xfs_devpoll,
(dev_type_mmap((*))) enodev,
0
};
#elif defined(__OpenBSD__)
struct cdevsw xfs_dev = {
xfs_devopen,
xfs_devclose,
xfs_devread,
xfs_devwrite,
xfs_devioctl,
(dev_type_stop((*))) enodev,
0,
xfs_devselect,
(dev_type_mmap((*))) enodev,
0
};
#elif defined(__FreeBSD__)
struct cdevsw xfs_dev = {
xfs_devopen,
xfs_devclose,
xfs_devread,
xfs_devwrite,
xfs_devioctl,
nostop,
noreset,
nodevtotty,
#if defined(HAVE_VOP_SELECT)
xfs_devselect,
#elif defined(HAVE_VOP_POLL)
xfs_devpoll,
#else
#error select or poll: that is the question
#endif
nommap,
nostrategy,
NULL,
0
};
#endif /* FreeBSD */
int
xfs_install_device(void)
{
int i;
for (i = 0; i < NXFS; i++) {
XFSDEB(XDEBDEV, ("before initq(messageq and sleepq)\n"));
xfs_initq(&xfs_channel[i].messageq);
xfs_initq(&xfs_channel[i].sleepq);
}
return 0;
}
int
xfs_uninstall_device(void)
{
int i;
struct xfs_channel *chan;
for (i = 0; i < NXFS; i++) {
chan = &xfs_channel[i];
if (chan->status & CHANNEL_OPENED)
xfs_devclose(makedev(0, i), 0, 0, NULL);
}
return 0;
}
int
xfs_stat_device(void)
{
return xfs_uprintf_device();
}
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