zfs_ctldir.h revision 1.1.1.2 
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 2009 Sun Microsystems, Inc.  All rights reserved.
23 * Use is subject to license terms.
24 */
25
26#ifndef	_ZFS_CTLDIR_H
27#define	_ZFS_CTLDIR_H
28
29#include <sys/pathname.h>
30#include <sys/vnode.h>
31#include <sys/zfs_vfsops.h>
32#include <sys/zfs_znode.h>
33
34#ifdef	__cplusplus
35extern "C" {
36#endif
37
38#define	ZFS_CTLDIR_NAME		".zfs"
39
40#define	zfs_has_ctldir(zdp)	\
41	((zdp)->z_id == (zdp)->z_zfsvfs->z_root && \
42	((zdp)->z_zfsvfs->z_ctldir != NULL))
43#define	zfs_show_ctldir(zdp)	\
44	(zfs_has_ctldir(zdp) && \
45	((zdp)->z_zfsvfs->z_show_ctldir))
46
47void zfsctl_create(zfsvfs_t *);
48void zfsctl_destroy(zfsvfs_t *);
49vnode_t *zfsctl_root(znode_t *);
50void zfsctl_init(void);
51void zfsctl_fini(void);
52
53int zfsctl_rename_snapshot(const char *from, const char *to);
54int zfsctl_destroy_snapshot(const char *snapname, int force);
55int zfsctl_umount_snapshots(vfs_t *, int, cred_t *);
56
57int zfsctl_root_lookup(vnode_t *dvp, char *nm, vnode_t **vpp, pathname_t *pnp,
58    int flags, vnode_t *rdir, cred_t *cr, caller_context_t *ct,
59    int *direntflags, pathname_t *realpnp);
60
61int zfsctl_make_fid(zfsvfs_t *zfsvfsp, uint64_t object, uint32_t gen,
62    fid_t *fidp);
63int zfsctl_lookup_objset(vfs_t *vfsp, uint64_t objsetid, zfsvfs_t **zfsvfsp);
64
65#define	ZFSCTL_INO_ROOT		0x1
66#define	ZFSCTL_INO_SNAPDIR	0x2
67#define	ZFSCTL_INO_SHARES	0x3
68
69#ifdef	__cplusplus
70}
71#endif
72
73#endif	/* _ZFS_CTLDIR_H */
74