zfs_ctldir.h revision 315844 
1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21/*
22 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
23 */
24
25#ifndef	_ZFS_CTLDIR_H
26#define	_ZFS_CTLDIR_H
27
28#include <sys/vnode.h>
29#include <sys/zfs_vfsops.h>
30#include <sys/zfs_znode.h>
31
32#ifdef	__cplusplus
33extern "C" {
34#endif
35
36#define	ZFS_CTLDIR_NAME		".zfs"
37
38#define	zfs_has_ctldir(zdp)	\
39	((zdp)->z_id == (zdp)->z_zfsvfs->z_root && \
40	((zdp)->z_zfsvfs->z_ctldir != NULL))
41#define	zfs_show_ctldir(zdp)	\
42	(zfs_has_ctldir(zdp) && \
43	((zdp)->z_zfsvfs->z_show_ctldir))
44
45void zfsctl_create(zfsvfs_t *);
46void zfsctl_destroy(zfsvfs_t *);
47int zfsctl_root(zfsvfs_t *, int, vnode_t **);
48void zfsctl_init(void);
49void zfsctl_fini(void);
50boolean_t zfsctl_is_node(vnode_t *);
51
52int zfsctl_rename_snapshot(const char *from, const char *to);
53int zfsctl_destroy_snapshot(const char *snapname, int force);
54int zfsctl_umount_snapshots(vfs_t *, int, cred_t *);
55
56int zfsctl_lookup_objset(vfs_t *vfsp, uint64_t objsetid, zfsvfs_t **zfsvfsp);
57
58#define	ZFSCTL_INO_ROOT		0x1
59#define	ZFSCTL_INO_SNAPDIR	0x2
60
61#ifdef	__cplusplus
62}
63#endif
64
65#endif	/* _ZFS_CTLDIR_H */
66