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 2010 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
26 #ifndef _SYS_FS_ZFS_FUID_H
27 #define _SYS_FS_ZFS_FUID_H
30 #include <sys/kidmap.h>
33 #include <sys/zfs_vfsops.h>
49 * Estimate space needed for one more fuid table entry.
50 * for now assume its current size + 1K
52 #define FUID_SIZE_ESTIMATE(z) ((z)->z_fuid_size + (SPA_MINBLOCKSIZE << 1))
54 #define FUID_INDEX(x) ((x) >> 32)
55 #define FUID_RID(x) ((x) & 0xffffffff)
56 #define FUID_ENCODE(idx, rid) (((uint64_t)(idx) << 32) | (rid))
58 * FUIDs cause problems for the intent log
59 * we need to replay the creation of the FUID,
60 * but we can't count on the idmapper to be around
61 * and during replay the FUID index may be different than
62 * before. Also, if an ACL has 100 ACEs and 12 different
63 * domains we don't want to log 100 domain strings, but rather
68 * The FUIDs in the log will index into
69 * domain string table and the bottom half will be the rid.
70 * Used for mapping ephemeral uid/gid during ACL setting to FUIDs
72 typedef struct zfs_fuid
{
74 uint64_t z_id
; /* uid/gid being converted to fuid */
75 uint64_t z_domidx
; /* index in AVL domain table */
76 uint64_t z_logfuid
; /* index for domain in log */
79 /* list of unique domains */
80 typedef struct zfs_fuid_domain
{
82 uint64_t z_domidx
; /* AVL tree idx */
83 const char *z_domain
; /* domain string */
87 * FUID information necessary for logging create, setattr, and setacl.
89 typedef struct zfs_fuid_info
{
92 uint64_t z_fuid_owner
;
93 uint64_t z_fuid_group
;
94 char **z_domain_table
; /* Used during replay */
95 uint32_t z_fuid_cnt
; /* How many fuids in z_fuids */
96 uint32_t z_domain_cnt
; /* How many domains */
97 size_t z_domain_str_sz
; /* len of domain strings z_domain list */
102 extern uid_t
zfs_fuid_map_id(zfsvfs_t
*, uint64_t, cred_t
*, zfs_fuid_type_t
);
103 extern void zfs_fuid_node_add(zfs_fuid_info_t
**, const char *, uint32_t,
104 uint64_t, uint64_t, zfs_fuid_type_t
);
105 extern void zfs_fuid_destroy(zfsvfs_t
*);
106 extern uint64_t zfs_fuid_create_cred(zfsvfs_t
*, zfs_fuid_type_t
,
107 cred_t
*, zfs_fuid_info_t
**);
108 extern uint64_t zfs_fuid_create(zfsvfs_t
*, uint64_t, cred_t
*, zfs_fuid_type_t
,
110 extern void zfs_fuid_map_ids(struct znode
*zp
, cred_t
*cr
,
111 uid_t
*uid
, uid_t
*gid
);
112 extern zfs_fuid_info_t
*zfs_fuid_info_alloc(void);
113 extern void zfs_fuid_info_free(zfs_fuid_info_t
*);
114 extern boolean_t
zfs_groupmember(zfsvfs_t
*, uint64_t, cred_t
*);
115 void zfs_fuid_sync(zfsvfs_t
*, dmu_tx_t
*);
116 extern int zfs_fuid_find_by_domain(zfsvfs_t
*, const char *domain
,
117 char **retdomain
, boolean_t addok
);
118 extern const char *zfs_fuid_find_by_idx(zfsvfs_t
*zfsvfs
, uint32_t idx
);
119 extern void zfs_fuid_txhold(zfsvfs_t
*zfsvfs
, dmu_tx_t
*tx
);
122 char *zfs_fuid_idx_domain(avl_tree_t
*, uint32_t);
123 void zfs_fuid_avl_tree_create(avl_tree_t
*, avl_tree_t
*);
124 uint64_t zfs_fuid_table_load(objset_t
*, uint64_t, avl_tree_t
*, avl_tree_t
*);
125 void zfs_fuid_table_destroy(avl_tree_t
*, avl_tree_t
*);
131 #endif /* _SYS_FS_ZFS_FUID_H */