include/sys/zfs_ctldir.h

   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 #define ZFSCTL_INO_SHARES       0x3
  68
  69 #ifdef  __cplusplus
  70 }
  71 #endif
  72
  73 #endif  /* _ZFS_CTLDIR_H */