106 lines
2.9 KiB
C
106 lines
2.9 KiB
C
/* $NetBSD: genfs_vfsops.c,v 1.7 2017/05/24 09:53:55 hannken Exp $ */
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/*-
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* Copyright (c) 2008, 2009 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: genfs_vfsops.c,v 1.7 2017/05/24 09:53:55 hannken Exp $");
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#include <sys/types.h>
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#include <sys/mount.h>
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#include <sys/fstrans.h>
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#include <sys/statvfs.h>
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#include <sys/vnode.h>
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#include <miscfs/genfs/genfs.h>
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#include <miscfs/genfs/genfs_node.h>
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int
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genfs_statvfs(struct mount *mp, struct statvfs *sbp)
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{
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sbp->f_bsize = DEV_BSIZE;
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sbp->f_frsize = DEV_BSIZE;
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sbp->f_iosize = DEV_BSIZE;
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sbp->f_blocks = 2; /* 1k to keep df happy */
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sbp->f_bfree = 0;
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sbp->f_bavail = 0;
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sbp->f_bresvd = 0;
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sbp->f_files = 0;
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sbp->f_ffree = 0;
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sbp->f_favail = 0;
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sbp->f_fresvd = 0;
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copy_statvfs_info(sbp, mp);
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return 0;
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}
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int
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genfs_renamelock_enter(struct mount *mp)
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{
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mutex_enter(&mp->mnt_renamelock);
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/* Preserve possible error return in case we become interruptible. */
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return 0;
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}
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void
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genfs_renamelock_exit(struct mount *mp)
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{
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mutex_exit(&mp->mnt_renamelock);
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}
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int
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genfs_suspendctl(struct mount *mp, int cmd)
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{
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int error;
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int error2 __diagused;
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if ((mp->mnt_iflag & IMNT_HAS_TRANS) == 0)
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return EOPNOTSUPP;
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switch (cmd) {
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case SUSPEND_SUSPEND:
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error = fstrans_setstate(mp, FSTRANS_SUSPENDED);
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if (error == 0) {
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if ((mp->mnt_iflag & IMNT_GONE) != 0)
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error = ENOENT;
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if (error) {
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error2 = fstrans_setstate(mp, FSTRANS_NORMAL);
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KASSERT(error2 == 0);
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}
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}
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return error;
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case SUSPEND_RESUME:
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error2 = fstrans_setstate(mp, FSTRANS_NORMAL);
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KASSERT(error2 == 0);
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return 0;
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default:
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panic("%s: bogus command %d", __func__, cmd);
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}
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}
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