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.
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.
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]
22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
26 #ifndef _SYS_FS_ZFS_VFSOPS_H
27 #define _SYS_FS_ZFS_VFSOPS_H
29 #include <sys/isa_defs.h>
30 #include <sys/types32.h>
34 #include <sys/rrwlock.h>
35 #include <sys/zfs_ioctl.h>
41 typedef struct zfsvfs zfsvfs_t
;
44 vfs_t
*z_vfs
; /* generic fs struct */
45 zfsvfs_t
*z_parent
; /* parent fs */
46 objset_t
*z_os
; /* objset reference */
47 uint64_t z_root
; /* id of root znode */
48 uint64_t z_unlinkedobj
; /* id of unlinked zapobj */
49 uint64_t z_max_blksz
; /* maximum block size for files */
50 uint64_t z_fuid_obj
; /* fuid table object number */
51 uint64_t z_fuid_size
; /* fuid table size */
52 avl_tree_t z_fuid_idx
; /* fuid tree keyed by index */
53 avl_tree_t z_fuid_domain
; /* fuid tree keyed by domain */
54 krwlock_t z_fuid_lock
; /* fuid lock */
55 boolean_t z_fuid_loaded
; /* fuid tables are loaded */
56 boolean_t z_fuid_dirty
; /* need to sync fuid table ? */
57 struct zfs_fuid_info
*z_fuid_replay
; /* fuid info for replay */
58 zilog_t
*z_log
; /* intent log pointer */
59 uint_t z_acl_mode
; /* acl chmod/mode behavior */
60 uint_t z_acl_inherit
; /* acl inheritance behavior */
61 zfs_case_t z_case
; /* case-sense */
62 boolean_t z_utf8
; /* utf8-only */
63 int z_norm
; /* normalization flags */
64 boolean_t z_atime
; /* enable atimes mount option */
65 boolean_t z_unmounted
; /* unmounted */
66 rrwlock_t z_teardown_lock
;
67 krwlock_t z_teardown_inactive_lock
;
68 list_t z_all_znodes
; /* all vnodes in the fs */
69 kmutex_t z_znodes_lock
; /* lock for z_all_znodes */
70 vnode_t
*z_ctldir
; /* .zfs directory pointer */
71 boolean_t z_show_ctldir
; /* expose .zfs in the root dir */
72 boolean_t z_issnap
; /* true if this is a snapshot */
73 boolean_t z_vscan
; /* virus scan on/off */
74 boolean_t z_use_fuids
; /* version allows fuids */
75 boolean_t z_replay
; /* set during ZIL replay */
76 uint64_t z_version
; /* ZPL version */
77 uint64_t z_shares_dir
; /* hidden shares dir */
79 uint64_t z_userquota_obj
;
80 uint64_t z_groupquota_obj
;
81 #define ZFS_OBJ_MTX_SZ 64
82 kmutex_t z_hold_mtx
[ZFS_OBJ_MTX_SZ
]; /* znode hold locks */
86 * Normal filesystems (those not under .zfs/snapshot) have a total
87 * file ID size limited to 12 bytes (including the length field) due to
88 * NFSv2 protocol's limitation of 32 bytes for a filehandle. For historical
89 * reasons, this same limit is being imposed by the Solaris NFSv3 implementation
90 * (although the NFSv3 protocol actually permits a maximum of 64 bytes). It
91 * is not possible to expand beyond 12 bytes without abandoning support
94 * For normal filesystems, we partition up the available space as follows:
95 * 2 bytes fid length (required)
96 * 6 bytes object number (48 bits)
97 * 4 bytes generation number (32 bits)
99 * We reserve only 48 bits for the object number, as this is the limit
100 * currently defined and imposed by the DMU.
102 typedef struct zfid_short
{
104 uint8_t zf_object
[6]; /* obj[i] = obj >> (8 * i) */
105 uint8_t zf_gen
[4]; /* gen[i] = gen >> (8 * i) */
109 * Filesystems under .zfs/snapshot have a total file ID size of 22 bytes
110 * (including the length field). This makes files under .zfs/snapshot
111 * accessible by NFSv3 and NFSv4, but not NFSv2.
113 * For files under .zfs/snapshot, we partition up the available space
115 * 2 bytes fid length (required)
116 * 6 bytes object number (48 bits)
117 * 4 bytes generation number (32 bits)
118 * 6 bytes objset id (48 bits)
119 * 4 bytes currently just zero (32 bits)
121 * We reserve only 48 bits for the object number and objset id, as these are
122 * the limits currently defined and imposed by the DMU.
124 typedef struct zfid_long
{
126 uint8_t zf_setid
[6]; /* obj[i] = obj >> (8 * i) */
127 uint8_t zf_setgen
[4]; /* gen[i] = gen >> (8 * i) */
130 #define SHORT_FID_LEN (sizeof (zfid_short_t) - sizeof (uint16_t))
131 #define LONG_FID_LEN (sizeof (zfid_long_t) - sizeof (uint16_t))
133 extern uint_t zfs_fsyncer_key
;
135 extern int zfs_suspend_fs(zfsvfs_t
*zfsvfs
, char *osname
, int *mode
);
136 extern int zfs_resume_fs(zfsvfs_t
*zfsvfs
, const char *osname
, int mode
);
137 extern int zfs_userspace_one(zfsvfs_t
*zfsvfs
, zfs_userquota_prop_t type
,
138 const char *domain
, uint64_t rid
, uint64_t *valuep
);
139 extern int zfs_userspace_many(zfsvfs_t
*zfsvfs
, zfs_userquota_prop_t type
,
140 uint64_t *cookiep
, void *vbuf
, uint64_t *bufsizep
);
141 extern int zfs_set_userquota(zfsvfs_t
*zfsvfs
, zfs_userquota_prop_t type
,
142 const char *domain
, uint64_t rid
, uint64_t quota
);
143 extern boolean_t
zfs_usergroup_overquota(zfsvfs_t
*zfsvfs
,
144 boolean_t isgroup
, uint64_t fuid
);
145 extern int zfs_set_version(zfsvfs_t
*zfsvfs
, uint64_t newvers
);
146 extern int zfsvfs_create(const char *name
, int mode
, zfsvfs_t
**zvp
);
147 extern void zfsvfs_free(zfsvfs_t
*zfsvfs
);
153 #endif /* _SYS_FS_ZFS_VFSOPS_H */