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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 _SYS_FS_ZFS_FUID_H | |
27 | #define _SYS_FS_ZFS_FUID_H | |
28 | ||
b128c09f | 29 | #pragma ident "%Z%%M% %I% %E% SMI" |
34dc7c2f BB |
30 | |
31 | #ifdef _KERNEL | |
32 | #include <sys/kidmap.h> | |
33 | #include <sys/sid.h> | |
34 | #include <sys/dmu.h> | |
35 | #include <sys/zfs_vfsops.h> | |
36 | #endif | |
37 | #include <sys/avl.h> | |
38 | ||
39 | #ifdef __cplusplus | |
40 | extern "C" { | |
41 | #endif | |
42 | ||
43 | typedef enum { | |
44 | ZFS_OWNER, | |
45 | ZFS_GROUP, | |
46 | ZFS_ACE_USER, | |
47 | ZFS_ACE_GROUP | |
48 | } zfs_fuid_type_t; | |
49 | ||
50 | /* | |
51 | * Estimate space needed for one more fuid table entry. | |
52 | * for now assume its current size + 1K | |
53 | */ | |
54 | #define FUID_SIZE_ESTIMATE(z) (z->z_fuid_size + (SPA_MINBLOCKSIZE << 1)) | |
55 | ||
56 | #define FUID_INDEX(x) (x >> 32) | |
57 | #define FUID_RID(x) (x & 0xffffffff) | |
58 | #define FUID_ENCODE(idx, rid) ((idx << 32) | rid) | |
59 | /* | |
60 | * FUIDs cause problems for the intent log | |
61 | * we need to replay the creation of the FUID, | |
62 | * but we can't count on the idmapper to be around | |
63 | * and during replay the FUID index may be different than | |
64 | * before. Also, if an ACL has 100 ACEs and 12 different | |
65 | * domains we don't want to log 100 domain strings, but rather | |
66 | * just the unique 12. | |
67 | */ | |
68 | ||
69 | /* | |
70 | * The FUIDs in the log will index into | |
71 | * domain string table and the bottom half will be the rid. | |
72 | * Used for mapping ephemeral uid/gid during ACL setting to FUIDs | |
73 | */ | |
74 | typedef struct zfs_fuid { | |
75 | list_node_t z_next; | |
76 | uint64_t z_id; /* uid/gid being converted to fuid */ | |
77 | uint64_t z_domidx; /* index in AVL domain table */ | |
78 | uint64_t z_logfuid; /* index for domain in log */ | |
79 | } zfs_fuid_t; | |
80 | ||
81 | /* list of unique domains */ | |
82 | typedef struct zfs_fuid_domain { | |
83 | list_node_t z_next; | |
84 | uint64_t z_domidx; /* AVL tree idx */ | |
85 | const char *z_domain; /* domain string */ | |
86 | } zfs_fuid_domain_t; | |
87 | ||
88 | /* | |
89 | * FUID information necessary for logging create, setattr, and setacl. | |
90 | */ | |
91 | typedef struct zfs_fuid_info { | |
92 | list_t z_fuids; | |
93 | list_t z_domains; | |
94 | uint64_t z_fuid_owner; | |
95 | uint64_t z_fuid_group; | |
96 | char **z_domain_table; /* Used during replay */ | |
97 | uint32_t z_fuid_cnt; /* How many fuids in z_fuids */ | |
98 | uint32_t z_domain_cnt; /* How many domains */ | |
99 | size_t z_domain_str_sz; /* len of domain strings z_domain list */ | |
100 | } zfs_fuid_info_t; | |
101 | ||
102 | #ifdef _KERNEL | |
103 | struct znode; | |
104 | extern uid_t zfs_fuid_map_id(zfsvfs_t *, uint64_t, cred_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 | dmu_tx_t *, cred_t *, zfs_fuid_info_t **); | |
108 | extern uint64_t zfs_fuid_create(zfsvfs_t *, uint64_t, cred_t *, zfs_fuid_type_t, | |
109 | dmu_tx_t *, zfs_fuid_info_t **); | |
110 | extern void zfs_fuid_map_ids(struct znode *zp, cred_t *cr, uid_t *uid, | |
111 | uid_t *gid); | |
112 | extern zfs_fuid_info_t *zfs_fuid_info_alloc(void); | |
113 | extern void zfs_fuid_info_free(); | |
114 | extern boolean_t zfs_groupmember(zfsvfs_t *, uint64_t, cred_t *); | |
115 | #endif | |
116 | ||
117 | char *zfs_fuid_idx_domain(avl_tree_t *, uint32_t); | |
118 | uint64_t zfs_fuid_table_load(objset_t *, uint64_t, avl_tree_t *, avl_tree_t *); | |
119 | void zfs_fuid_table_destroy(avl_tree_t *, avl_tree_t *); | |
120 | ||
121 | #ifdef __cplusplus | |
122 | } | |
123 | #endif | |
124 | ||
125 | #endif /* _SYS_FS_ZFS_FUID_H */ |