/*      $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);
        }
}