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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 | /* | |
428870ff | 22 | * Copyright 2010 Sun Microsystems, Inc. All rights reserved. |
34dc7c2f BB |
23 | * Use is subject to license terms. |
24 | */ | |
25 | ||
26 | #ifndef _SYS_FS_ZFS_FUID_H | |
27 | #define _SYS_FS_ZFS_FUID_H | |
28 | ||
34dc7c2f BB |
29 | #ifdef _KERNEL |
30 | #include <sys/kidmap.h> | |
31 | #include <sys/sid.h> | |
32 | #include <sys/dmu.h> | |
33 | #include <sys/zfs_vfsops.h> | |
34 | #endif | |
35 | #include <sys/avl.h> | |
36 | ||
37 | #ifdef __cplusplus | |
38 | extern "C" { | |
39 | #endif | |
40 | ||
41 | typedef enum { | |
42 | ZFS_OWNER, | |
43 | ZFS_GROUP, | |
44 | ZFS_ACE_USER, | |
45 | ZFS_ACE_GROUP | |
46 | } zfs_fuid_type_t; | |
47 | ||
48 | /* | |
49 | * Estimate space needed for one more fuid table entry. | |
50 | * for now assume its current size + 1K | |
51 | */ | |
9babb374 | 52 | #define FUID_SIZE_ESTIMATE(z) ((z)->z_fuid_size + (SPA_MINBLOCKSIZE << 1)) |
34dc7c2f | 53 | |
9babb374 BB |
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)) | |
34dc7c2f BB |
57 | /* |
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 | |
64 | * just the unique 12. | |
65 | */ | |
66 | ||
67 | /* | |
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 | |
71 | */ | |
72 | typedef struct zfs_fuid { | |
73 | list_node_t z_next; | |
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 */ | |
77 | } zfs_fuid_t; | |
78 | ||
79 | /* list of unique domains */ | |
80 | typedef struct zfs_fuid_domain { | |
81 | list_node_t z_next; | |
82 | uint64_t z_domidx; /* AVL tree idx */ | |
83 | const char *z_domain; /* domain string */ | |
84 | } zfs_fuid_domain_t; | |
85 | ||
86 | /* | |
87 | * FUID information necessary for logging create, setattr, and setacl. | |
88 | */ | |
89 | typedef struct zfs_fuid_info { | |
90 | list_t z_fuids; | |
91 | list_t z_domains; | |
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 */ | |
98 | } zfs_fuid_info_t; | |
99 | ||
100 | #ifdef _KERNEL | |
101 | struct znode; | |
102 | extern uid_t zfs_fuid_map_id(zfsvfs_t *, uint64_t, cred_t *, zfs_fuid_type_t); | |
428870ff BB |
103 | extern void zfs_fuid_node_add(zfs_fuid_info_t **, const char *, uint32_t, |
104 | uint64_t, uint64_t, zfs_fuid_type_t); | |
34dc7c2f BB |
105 | extern void zfs_fuid_destroy(zfsvfs_t *); |
106 | extern uint64_t zfs_fuid_create_cred(zfsvfs_t *, zfs_fuid_type_t, | |
9babb374 | 107 | cred_t *, zfs_fuid_info_t **); |
34dc7c2f | 108 | extern uint64_t zfs_fuid_create(zfsvfs_t *, uint64_t, cred_t *, zfs_fuid_type_t, |
9babb374 BB |
109 | zfs_fuid_info_t **); |
110 | extern void zfs_fuid_map_ids(struct znode *zp, cred_t *cr, | |
111 | uid_t *uid, uid_t *gid); | |
34dc7c2f | 112 | extern zfs_fuid_info_t *zfs_fuid_info_alloc(void); |
9babb374 | 113 | extern void zfs_fuid_info_free(zfs_fuid_info_t *); |
34dc7c2f | 114 | extern boolean_t zfs_groupmember(zfsvfs_t *, uint64_t, cred_t *); |
9babb374 BB |
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); | |
34dc7c2f BB |
120 | #endif |
121 | ||
122 | char *zfs_fuid_idx_domain(avl_tree_t *, uint32_t); | |
9babb374 | 123 | void zfs_fuid_avl_tree_create(avl_tree_t *, avl_tree_t *); |
34dc7c2f BB |
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 *); | |
126 | ||
127 | #ifdef __cplusplus | |
128 | } | |
129 | #endif | |
130 | ||
131 | #endif /* _SYS_FS_ZFS_FUID_H */ |