1/*	$NetBSD: genfs_vfsops.c,v 1.11 2022/07/08 07:42:06 hannken Exp $	*/
2
3/*-
4 * Copyright (c) 2008, 2009, 2019 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#include <sys/cdefs.h>
30__KERNEL_RCSID(0, "$NetBSD: genfs_vfsops.c,v 1.11 2022/07/08 07:42:06 hannken Exp $");
31
32#include <sys/types.h>
33#include <sys/mount.h>
34#include <sys/fstrans.h>
35#include <sys/statvfs.h>
36#include <sys/vnode.h>
37
38#include <miscfs/genfs/genfs.h>
39#include <miscfs/genfs/genfs_node.h>
40
41int
42genfs_statvfs(struct mount *mp, struct statvfs *sbp)
43{
44
45	sbp->f_bsize = DEV_BSIZE;
46	sbp->f_frsize = DEV_BSIZE;
47	sbp->f_iosize = DEV_BSIZE;
48	sbp->f_blocks = 2;		/* 1k to keep df happy */
49	sbp->f_bfree = 0;
50	sbp->f_bavail = 0;
51	sbp->f_bresvd = 0;
52	sbp->f_files = 0;
53	sbp->f_ffree = 0;
54	sbp->f_favail = 0;
55	sbp->f_fresvd = 0;
56	copy_statvfs_info(sbp, mp);
57
58	return 0;
59}
60
61int
62genfs_renamelock_enter(struct mount *mp)
63{
64	mutex_enter(mp->mnt_renamelock);
65	/* Preserve possible error return in case we become interruptible. */
66	return 0;
67}
68
69void
70genfs_renamelock_exit(struct mount *mp)
71{
72	mutex_exit(mp->mnt_renamelock);
73}
74
75int
76genfs_suspendctl(struct mount *mp, int cmd)
77{
78	int error;
79
80	switch (cmd) {
81	case SUSPEND_SUSPEND:
82		error = fstrans_setstate(mp, FSTRANS_SUSPENDING);
83		if (error)
84			return error;
85		error = fstrans_setstate(mp, FSTRANS_SUSPENDED);
86		return error;
87
88	case SUSPEND_RESUME:
89		error = fstrans_setstate(mp, FSTRANS_NORMAL);
90		KASSERT(error == 0);
91		return 0;
92
93	default:
94		panic("%s: bogus command %d", __func__, cmd);
95	}
96}
97