1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
|
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
*/
#ifndef _SYS_FS_ZFS_ACL_H
#define _SYS_FS_ZFS_ACL_H
#ifdef _KERNEL
#include <sys/isa_defs.h>
#include <sys/types32.h>
#include <sys/xvattr.h>
#endif
#include <sys/acl.h>
#include <sys/dmu.h>
#include <sys/zfs_fuid.h>
#include <sys/sa.h>
#ifdef __cplusplus
extern "C" {
#endif
struct znode_phys;
#define ACE_SLOT_CNT 6
#define ZFS_ACL_VERSION_INITIAL 0ULL
#define ZFS_ACL_VERSION_FUID 1ULL
#define ZFS_ACL_VERSION ZFS_ACL_VERSION_FUID
/*
* ZFS ACLs (Access Control Lists) are stored in various forms.
*
* Files created with ACL version ZFS_ACL_VERSION_INITIAL
* will all be created with fixed length ACEs of type
* zfs_oldace_t.
*
* Files with ACL version ZFS_ACL_VERSION_FUID will be created
* with various sized ACEs. The abstraction entries will utilize
* zfs_ace_hdr_t, normal user/group entries will use zfs_ace_t
* and some specialized CIFS ACEs will use zfs_object_ace_t.
*/
/*
* All ACEs have a common hdr. For
* owner@, group@, and everyone@ this is all
* thats needed.
*/
typedef struct zfs_ace_hdr {
uint16_t z_type;
uint16_t z_flags;
uint32_t z_access_mask;
} zfs_ace_hdr_t;
typedef zfs_ace_hdr_t zfs_ace_abstract_t;
/*
* Standard ACE
*/
typedef struct zfs_ace {
zfs_ace_hdr_t z_hdr;
uint64_t z_fuid;
} zfs_ace_t;
/*
* The following type only applies to ACE_ACCESS_ALLOWED|DENIED_OBJECT_ACE_TYPE
* and will only be set/retrieved in a CIFS context.
*/
typedef struct zfs_object_ace {
zfs_ace_t z_ace;
uint8_t z_object_type[16]; /* object type */
uint8_t z_inherit_type[16]; /* inherited object type */
} zfs_object_ace_t;
typedef struct zfs_oldace {
uint32_t z_fuid; /* "who" */
uint32_t z_access_mask; /* access mask */
uint16_t z_flags; /* flags, i.e inheritance */
uint16_t z_type; /* type of entry allow/deny */
} zfs_oldace_t;
typedef struct zfs_acl_phys_v0 {
uint64_t z_acl_extern_obj; /* ext acl pieces */
uint32_t z_acl_count; /* Number of ACEs */
uint16_t z_acl_version; /* acl version */
uint16_t z_acl_pad; /* pad */
zfs_oldace_t z_ace_data[ACE_SLOT_CNT]; /* 6 standard ACEs */
} zfs_acl_phys_v0_t;
#define ZFS_ACE_SPACE (sizeof (zfs_oldace_t) * ACE_SLOT_CNT)
/*
* Size of ACL count is always 2 bytes.
* Necessary to for dealing with both V0 ACL and V1 ACL layout
*/
#define ZFS_ACL_COUNT_SIZE (sizeof (uint16_t))
typedef struct zfs_acl_phys {
uint64_t z_acl_extern_obj; /* ext acl pieces */
uint32_t z_acl_size; /* Number of bytes in ACL */
uint16_t z_acl_version; /* acl version */
uint16_t z_acl_count; /* ace count */
uint8_t z_ace_data[ZFS_ACE_SPACE]; /* space for embedded ACEs */
} zfs_acl_phys_t;
typedef struct acl_ops {
uint32_t (*ace_mask_get) (void *acep); /* get access mask */
void (*ace_mask_set) (void *acep,
uint32_t mask); /* set access mask */
uint16_t (*ace_flags_get) (void *acep); /* get flags */
void (*ace_flags_set) (void *acep,
uint16_t flags); /* set flags */
uint16_t (*ace_type_get)(void *acep); /* get type */
void (*ace_type_set)(void *acep,
uint16_t type); /* set type */
uint64_t (*ace_who_get)(void *acep); /* get who/fuid */
void (*ace_who_set)(void *acep,
uint64_t who); /* set who/fuid */
size_t (*ace_size)(void *acep); /* how big is this ace */
size_t (*ace_abstract_size)(void); /* sizeof abstract entry */
int (*ace_mask_off)(void); /* off of access mask in ace */
/* ptr to data if any */
int (*ace_data)(void *acep, void **datap);
} acl_ops_t;
/*
* A zfs_acl_t structure is composed of a list of zfs_acl_node_t's.
* Each node will have one or more ACEs associated with it. You will
* only have multiple nodes during a chmod operation. Normally only
* one node is required.
*/
typedef struct zfs_acl_node {
list_node_t z_next; /* Next chunk of ACEs */
void *z_acldata; /* pointer into actual ACE(s) */
void *z_allocdata; /* pointer to kmem allocated memory */
size_t z_allocsize; /* Size of blob in bytes */
size_t z_size; /* length of ACL data */
uint64_t z_ace_count; /* number of ACEs in this acl node */
int z_ace_idx; /* ace iterator positioned on */
} zfs_acl_node_t;
typedef struct zfs_acl {
uint64_t z_acl_count; /* Number of ACEs */
size_t z_acl_bytes; /* Number of bytes in ACL */
uint_t z_version; /* version of ACL */
void *z_next_ace; /* pointer to next ACE */
uint64_t z_hints; /* ACL hints (ZFS_INHERIT_ACE ...) */
zfs_acl_node_t *z_curr_node; /* current node iterator is handling */
list_t z_acl; /* chunks of ACE data */
acl_ops_t *z_ops; /* ACL operations */
} zfs_acl_t;
typedef struct acl_locator_cb {
zfs_acl_t *cb_aclp;
zfs_acl_node_t *cb_acl_node;
} zfs_acl_locator_cb_t;
#define ACL_DATA_ALLOCED 0x1
#define ZFS_ACL_SIZE(aclcnt) (sizeof (ace_t) * (aclcnt))
struct zfs_fuid_info;
typedef struct zfs_acl_ids {
uint64_t z_fuid; /* file owner fuid */
uint64_t z_fgid; /* file group owner fuid */
uint64_t z_mode; /* mode to set on create */
zfs_acl_t *z_aclp; /* ACL to create with file */
struct zfs_fuid_info *z_fuidp; /* for tracking fuids for log */
} zfs_acl_ids_t;
/*
* Property values for acl_mode and acl_inherit.
*
* acl_mode can take discard, noallow, groupmask and passthrough.
* whereas acl_inherit has secure instead of groupmask.
*/
#define ZFS_ACL_DISCARD 0
#define ZFS_ACL_NOALLOW 1
#define ZFS_ACL_GROUPMASK 2
#define ZFS_ACL_PASSTHROUGH 3
#define ZFS_ACL_RESTRICTED 4
#define ZFS_ACL_PASSTHROUGH_X 5
struct znode;
struct zfsvfs;
#ifdef _KERNEL
int zfs_acl_ids_create(struct znode *, int, vattr_t *,
cred_t *, vsecattr_t *, zfs_acl_ids_t *);
void zfs_acl_ids_free(zfs_acl_ids_t *);
boolean_t zfs_acl_ids_overquota(struct zfsvfs *, zfs_acl_ids_t *);
int zfs_getacl(struct znode *, vsecattr_t *, boolean_t, cred_t *);
int zfs_setacl(struct znode *, vsecattr_t *, boolean_t, cred_t *);
void zfs_acl_rele(void *);
void zfs_oldace_byteswap(ace_t *, int);
void zfs_ace_byteswap(void *, size_t, boolean_t);
extern boolean_t zfs_has_access(struct znode *zp, cred_t *cr);
extern int zfs_zaccess(struct znode *, int, int, boolean_t, cred_t *);
int zfs_fastaccesschk_execute(struct znode *, cred_t *);
extern int zfs_zaccess_rwx(struct znode *, mode_t, int, cred_t *);
extern int zfs_zaccess_unix(struct znode *, mode_t, cred_t *);
extern int zfs_acl_access(struct znode *, int, cred_t *);
void zfs_acl_chmod_setattr(struct znode *, zfs_acl_t **, uint64_t);
int zfs_zaccess_delete(struct znode *, struct znode *, cred_t *);
int zfs_zaccess_rename(struct znode *, struct znode *,
struct znode *, struct znode *, cred_t *cr);
void zfs_acl_free(zfs_acl_t *);
int zfs_vsec_2_aclp(struct zfsvfs *, umode_t, vsecattr_t *, cred_t *,
struct zfs_fuid_info **, zfs_acl_t **);
int zfs_aclset_common(struct znode *, zfs_acl_t *, cred_t *, dmu_tx_t *);
uint64_t zfs_external_acl(struct znode *);
int zfs_znode_acl_version(struct znode *);
int zfs_acl_size(struct znode *, int *);
zfs_acl_t *zfs_acl_alloc(int);
zfs_acl_node_t *zfs_acl_node_alloc(size_t);
void zfs_acl_xform(struct znode *, zfs_acl_t *, cred_t *);
void zfs_acl_data_locator(void **, uint32_t *, uint32_t, boolean_t, void *);
uint64_t zfs_mode_compute(uint64_t, zfs_acl_t *,
uint64_t *, uint64_t, uint64_t);
int zfs_acl_chown_setattr(struct znode *);
#endif
#ifdef __cplusplus
}
#endif
#endif /* _SYS_FS_ZFS_ACL_H */
|
