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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, Version 1.0 only
      6  * (the "License").  You may not use this file except in compliance
      7  * with the License.
      8  *
      9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
     10  * or http://www.opensolaris.org/os/licensing.
     11  * See the License for the specific language governing permissions
     12  * and limitations under the License.
     13  *
     14  * When distributing Covered Code, include this CDDL HEADER in each
     15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     16  * If applicable, add the following below this CDDL HEADER, with the
     17  * fields enclosed by brackets "[]" replaced with your own identifying
     18  * information: Portions Copyright [yyyy] [name of copyright owner]
     19  *
     20  * CDDL HEADER END
     21  */
     22 /*
     23  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
     24  * Use is subject to license terms.
     25  */
     26 
     27 #ifndef	_ZFS_CTLDIR_H
     28 #define	_ZFS_CTLDIR_H
     29 
     30 #pragma ident	"%Z%%M%	%I%	%E% SMI"
     31 
     32 #include <sys/pathname.h>
     33 #include <sys/vnode.h>
     34 #include <sys/zfs_vfsops.h>
     35 #include <sys/zfs_znode.h>
     36 
     37 #ifdef	__cplusplus
     38 extern "C" {
     39 #endif
     40 
     41 #define	ZFS_CTLDIR_NAME		".zfs"
     42 
     43 #define	zfs_has_ctldir(zdp)	\
     44 	((zdp)->z_id == (zdp)->z_zfsvfs->z_root && \
     45 	((zdp)->z_zfsvfs->z_ctldir != NULL))
     46 #define	zfs_show_ctldir(zdp)	\
     47 	(zfs_has_ctldir(zdp) && \
     48 	((zdp)->z_zfsvfs->z_show_ctldir))
     49 
     50 void zfsctl_create(zfsvfs_t *);
     51 void zfsctl_destroy(zfsvfs_t *);
     52 vnode_t *zfsctl_root(znode_t *);
     53 void zfsctl_init(void);
     54 void zfsctl_fini(void);
     55 
     56 int zfsctl_rename_snapshot(const char *from, const char *to);
     57 int zfsctl_destroy_snapshot(const char *snapname, int force);
     58 int zfsctl_umount_snapshots(vfs_t *, int, cred_t *);
     59 
     60 int zfsctl_root_lookup(vnode_t *dvp, char *nm, vnode_t **vpp, pathname_t *pnp,
     61     int flags, vnode_t *rdir, cred_t *cr);
     62 
     63 int zfsctl_make_fid(zfsvfs_t *zfsvfsp, uint64_t object, uint32_t gen,
     64     fid_t *fidp);
     65 int zfsctl_lookup_objset(vfs_t *vfsp, uint64_t objsetid, zfsvfs_t **zfsvfsp);
     66 
     67 #define	ZFSCTL_INO_ROOT		0x1
     68 #define	ZFSCTL_INO_SNAPDIR	0x2
     69 
     70 #ifdef	__cplusplus
     71 }
     72 #endif
     73 
     74 #endif	/* _ZFS_CTLDIR_H */
     75