]>
Commit | Line | Data |
---|---|---|
34dc7c2f BB |
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 | /* | |
9babb374 | 22 | * Copyright 2009 Sun Microsystems, Inc. All rights reserved. |
34dc7c2f BB |
23 | * Use is subject to license terms. |
24 | */ | |
25 | ||
26 | #ifndef _SYS_FS_ZFS_VFSOPS_H | |
27 | #define _SYS_FS_ZFS_VFSOPS_H | |
28 | ||
34dc7c2f BB |
29 | #include <sys/isa_defs.h> |
30 | #include <sys/types32.h> | |
31 | #include <sys/list.h> | |
32 | #include <sys/vfs.h> | |
33 | #include <sys/zil.h> | |
34 | #include <sys/rrwlock.h> | |
35 | #include <sys/zfs_ioctl.h> | |
36 | ||
37 | #ifdef __cplusplus | |
38 | extern "C" { | |
39 | #endif | |
40 | ||
41 | typedef struct zfsvfs zfsvfs_t; | |
42 | ||
43 | struct zfsvfs { | |
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 */ | |
34dc7c2f BB |
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 */ | |
9babb374 | 56 | boolean_t z_fuid_dirty; /* need to sync fuid table ? */ |
34dc7c2f BB |
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 */ | |
fb5f0bc8 | 75 | boolean_t z_replay; /* set during ZIL replay */ |
9babb374 | 76 | kmutex_t z_online_recv_lock; /* held while recv in progress */ |
34dc7c2f | 77 | uint64_t z_version; /* ZPL version */ |
9babb374 BB |
78 | uint64_t z_shares_dir; /* hidden shares dir */ |
79 | kmutex_t z_lock; | |
80 | uint64_t z_userquota_obj; | |
81 | uint64_t z_groupquota_obj; | |
34dc7c2f BB |
82 | #define ZFS_OBJ_MTX_SZ 64 |
83 | kmutex_t z_hold_mtx[ZFS_OBJ_MTX_SZ]; /* znode hold locks */ | |
84 | }; | |
85 | ||
86 | /* | |
87 | * Normal filesystems (those not under .zfs/snapshot) have a total | |
88 | * file ID size limited to 12 bytes (including the length field) due to | |
89 | * NFSv2 protocol's limitation of 32 bytes for a filehandle. For historical | |
90 | * reasons, this same limit is being imposed by the Solaris NFSv3 implementation | |
91 | * (although the NFSv3 protocol actually permits a maximum of 64 bytes). It | |
92 | * is not possible to expand beyond 12 bytes without abandoning support | |
93 | * of NFSv2. | |
94 | * | |
95 | * For normal filesystems, we partition up the available space as follows: | |
96 | * 2 bytes fid length (required) | |
97 | * 6 bytes object number (48 bits) | |
98 | * 4 bytes generation number (32 bits) | |
99 | * | |
100 | * We reserve only 48 bits for the object number, as this is the limit | |
101 | * currently defined and imposed by the DMU. | |
102 | */ | |
103 | typedef struct zfid_short { | |
104 | uint16_t zf_len; | |
105 | uint8_t zf_object[6]; /* obj[i] = obj >> (8 * i) */ | |
106 | uint8_t zf_gen[4]; /* gen[i] = gen >> (8 * i) */ | |
107 | } zfid_short_t; | |
108 | ||
109 | /* | |
110 | * Filesystems under .zfs/snapshot have a total file ID size of 22 bytes | |
111 | * (including the length field). This makes files under .zfs/snapshot | |
112 | * accessible by NFSv3 and NFSv4, but not NFSv2. | |
113 | * | |
114 | * For files under .zfs/snapshot, we partition up the available space | |
115 | * as follows: | |
116 | * 2 bytes fid length (required) | |
117 | * 6 bytes object number (48 bits) | |
118 | * 4 bytes generation number (32 bits) | |
119 | * 6 bytes objset id (48 bits) | |
120 | * 4 bytes currently just zero (32 bits) | |
121 | * | |
122 | * We reserve only 48 bits for the object number and objset id, as these are | |
123 | * the limits currently defined and imposed by the DMU. | |
124 | */ | |
125 | typedef struct zfid_long { | |
126 | zfid_short_t z_fid; | |
127 | uint8_t zf_setid[6]; /* obj[i] = obj >> (8 * i) */ | |
128 | uint8_t zf_setgen[4]; /* gen[i] = gen >> (8 * i) */ | |
129 | } zfid_long_t; | |
130 | ||
131 | #define SHORT_FID_LEN (sizeof (zfid_short_t) - sizeof (uint16_t)) | |
132 | #define LONG_FID_LEN (sizeof (zfid_long_t) - sizeof (uint16_t)) | |
133 | ||
134 | extern uint_t zfs_fsyncer_key; | |
135 | ||
136 | extern int zfs_suspend_fs(zfsvfs_t *zfsvfs, char *osname, int *mode); | |
137 | extern int zfs_resume_fs(zfsvfs_t *zfsvfs, const char *osname, int mode); | |
9babb374 BB |
138 | extern int zfs_userspace_one(zfsvfs_t *zfsvfs, zfs_userquota_prop_t type, |
139 | const char *domain, uint64_t rid, uint64_t *valuep); | |
140 | extern int zfs_userspace_many(zfsvfs_t *zfsvfs, zfs_userquota_prop_t type, | |
141 | uint64_t *cookiep, void *vbuf, uint64_t *bufsizep); | |
142 | extern int zfs_set_userquota(zfsvfs_t *zfsvfs, zfs_userquota_prop_t type, | |
143 | const char *domain, uint64_t rid, uint64_t quota); | |
144 | extern boolean_t zfs_usergroup_overquota(zfsvfs_t *zfsvfs, | |
145 | boolean_t isgroup, uint64_t fuid); | |
146 | extern int zfs_set_version(zfsvfs_t *zfsvfs, uint64_t newvers); | |
147 | extern int zfsvfs_create(const char *name, int mode, zfsvfs_t **zvp); | |
148 | extern void zfsvfs_free(zfsvfs_t *zfsvfs); | |
34dc7c2f BB |
149 | |
150 | #ifdef __cplusplus | |
151 | } | |
152 | #endif | |
153 | ||
154 | #endif /* _SYS_FS_ZFS_VFSOPS_H */ |