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      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
     33 extern "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 
     45 void zfsctl_create(zfsvfs_t *);
     46 void zfsctl_destroy(zfsvfs_t *);
     47 #ifdef __NetBSD__
     48 int zfsctl_loadvnode(vfs_t *, vnode_t *, const void *, size_t, const void **);
     49 int zfsctl_vptofh(vnode_t *, fid_t *, size_t *);
     50 int zfsctl_root(zfsvfs_t *, vnode_t **);
     51 int zfsctl_snapshot(zfsvfs_t *, vnode_t **);
     52 #else
     53 int zfsctl_root(zfsvfs_t *, int, vnode_t **);
     54 #endif
     55 void zfsctl_init(void);
     56 void zfsctl_fini(void);
     57 boolean_t zfsctl_is_node(vnode_t *);
     58 
     59 int zfsctl_rename_snapshot(const char *from, const char *to);
     60 int zfsctl_destroy_snapshot(const char *snapname, int force);
     61 int zfsctl_umount_snapshots(vfs_t *, int, cred_t *);
     62 
     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