/*      $NetBSD: genfs_vfsops.c,v 1.11 2022/07/08 07:42:06 hannken Exp $        */

/*-
* Copyright (c) 2008, 2009, 2019 The NetBSD Foundation, Inc.
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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 <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: genfs_vfsops.c,v 1.11 2022/07/08 07:42:06 hannken Exp $");

#include <sys/types.h>
#include <sys/mount.h>
#include <sys/fstrans.h>
#include <sys/statvfs.h>
#include <sys/vnode.h>

#include <miscfs/genfs/genfs.h>
#include <miscfs/genfs/genfs_node.h>

int
genfs_statvfs(struct mount *mp, struct statvfs *sbp)
{

       sbp->f_bsize = DEV_BSIZE;
       sbp->f_frsize = DEV_BSIZE;
       sbp->f_iosize = DEV_BSIZE;
       sbp->f_blocks = 2;              /* 1k to keep df happy */
       sbp->f_bfree = 0;
       sbp->f_bavail = 0;
       sbp->f_bresvd = 0;
       sbp->f_files = 0;
       sbp->f_ffree = 0;
       sbp->f_favail = 0;
       sbp->f_fresvd = 0;
       copy_statvfs_info(sbp, mp);

       return 0;
}

int
genfs_renamelock_enter(struct mount *mp)
{
       mutex_enter(mp->mnt_renamelock);
       /* Preserve possible error return in case we become interruptible. */
       return 0;
}

void
genfs_renamelock_exit(struct mount *mp)
{
       mutex_exit(mp->mnt_renamelock);
}

int
genfs_suspendctl(struct mount *mp, int cmd)
{
       int error;

       switch (cmd) {
       case SUSPEND_SUSPEND:
               error = fstrans_setstate(mp, FSTRANS_SUSPENDING);
               if (error)
                       return error;
               error = fstrans_setstate(mp, FSTRANS_SUSPENDED);
               return error;

       case SUSPEND_RESUME:
               error = fstrans_setstate(mp, FSTRANS_NORMAL);
               KASSERT(error == 0);
               return 0;

       default:
               panic("%s: bogus command %d", __func__, cmd);
       }
}