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/pathname.h>
29 #include <sys/vnode.h>
30 #include <sys/zfs_vfsops.h>
31 #include <sys/zfs_znode.h>
32 
33 #ifdef	__cplusplus
34 extern "C" {
35 #endif
36 
37 #define	ZFS_CTLDIR_NAME		".zfs"
38 
39 #define	zfs_has_ctldir(zdp)	\
40 	((zdp)->z_id == (zdp)->z_zfsvfs->z_root && \
41 	((zdp)->z_zfsvfs->z_ctldir != NULL))
42 #define	zfs_show_ctldir(zdp)	\
43 	(zfs_has_ctldir(zdp) && \
44 	((zdp)->z_zfsvfs->z_show_ctldir))
45 
46 void zfsctl_create(zfsvfs_t *);
47 void zfsctl_destroy(zfsvfs_t *);
48 vnode_t *zfsctl_root(znode_t *);
49 void zfsctl_init(void);
50 void zfsctl_fini(void);
51 boolean_t zfsctl_is_node(vnode_t *);
52 
53 int zfsctl_rename_snapshot(const char *from, const char *to);
54 int zfsctl_destroy_snapshot(const char *snapname, int force);
55 int zfsctl_umount_snapshots(vfs_t *, int, cred_t *);
56 
57 int 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 
61 int zfsctl_make_fid(zfsvfs_t *zfsvfsp, uint64_t object, uint32_t gen,
62     fid_t *fidp);
63 int 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 
68 #ifdef	__cplusplus
69 }
70 #endif
71 
72 #endif	/* _ZFS_CTLDIR_H */
73