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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 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
     35 extern "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 
     47 void zfsctl_create(zfsvfs_t *);
     48 void zfsctl_destroy(zfsvfs_t *);
     49 vnode_t *zfsctl_root(znode_t *);
     50 void zfsctl_init(void);
     51 void zfsctl_fini(void);
     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 #define	ZFSCTL_INO_SHARES	0x3
     68 
     69 #ifdef	__cplusplus
     70 }
     71 #endif
     72 
     73 #endif	/* _ZFS_CTLDIR_H */
     74