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 2008 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 #pragma ident "%Z%%M% %I% %E% SMI" 30 31 #include <sys/pathname.h> 32 #include <sys/vnode.h> 33 #include <sys/zfs_vfsops.h> 34 #include <sys/zfs_znode.h> 35 36 #ifdef __cplusplus 37 extern "C" { 38 #endif 39 40 #define ZFS_CTLDIR_NAME ".zfs" 41 42 #define zfs_has_ctldir(zdp) \ 43 ((zdp)->z_id == (zdp)->z_zfsvfs->z_root && \ 44 ((zdp)->z_zfsvfs->z_ctldir != NULL)) 45 #define zfs_show_ctldir(zdp) \ 46 (zfs_has_ctldir(zdp) && \ 47 ((zdp)->z_zfsvfs->z_show_ctldir)) 48 49 void zfsctl_create(zfsvfs_t *); 50 void zfsctl_destroy(zfsvfs_t *); 51 vnode_t *zfsctl_root(znode_t *); 52 void zfsctl_init(void); 53 void zfsctl_fini(void); 54 55 int zfsctl_rename_snapshot(const char *from, const char *to); 56 int zfsctl_destroy_snapshot(const char *snapname, int force); 57 int zfsctl_umount_snapshots(vfs_t *, int, cred_t *); 58 59 int zfsctl_root_lookup(vnode_t *dvp, char *nm, vnode_t **vpp, pathname_t *pnp, 60 int flags, vnode_t *rdir, cred_t *cr, caller_context_t *ct, 61 int *direntflags, pathname_t *realpnp); 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