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
|
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (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 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _SYS_MD_RENAME_H
#define _SYS_MD_RENAME_H
#pragma ident "%Z%%M% %I% %E% SMI"
#include <sys/types.h>
#include <sys/param.h>
#include <sys/systm.h>
#ifdef DEBUG
#include <sys/thread.h>
#endif
#include <sys/kstat.h>
#ifdef __cplusplus
extern "C" {
#endif
#include <sys/lvm/mdvar.h>
/*
* rename/exchange common definitions
*/
#define MD_RENAME_VERSION_OFFLINE (1) /* top-level must be offline */
#define MD_RENAME_VERSION_ONLINE (2) /* includes offline too */
/*
* current protocol only allows offline exchange
*/
#define MD_RENAME_VERSION MD_RENAME_VERSION_OFFLINE
/*
* The rename (aka. exchange) function is implemented as the
* following set of named services. Many of these are implemented
* generically and only overridden when a specific driver needs
* special care.
*/
#if defined(_KERNEL)
#define MDRNM_LIST_URFOLKS "rename svc: list your parents"
#define MDRNM_LIST_URSELF "rename svc: list your self"
#define MDRNM_LIST_URKIDS "rename svc: list your children"
#define MDRNM_LOCK "rename svc: lock"
#define MDRNM_UNLOCK "rename svc: unlock"
#define MDRNM_CHECK "rename svc: check state"
/* role swappers */
#define MDRNM_UPDATE_KIDS "rename svc: parent update children"
#define MDRNM_PARENT_UPDATE_TO "rename svc: parent update to"
#define MDRNM_SELF_UPDATE_FROM_UP "rename svc: self update from up"
#define MDRNM_UPDATE_SELF "rename svc: self update self"
#define MDRNM_SELF_UPDATE_FROM_DOWN "rename svc: self update from down"
#define MDRNM_CHILD_UPDATE_TO "rename svc: child update to"
#define MDRNM_UPDATE_FOLKS "rename svc: child update parents"
typedef enum md_rename_role_t {
MDRR_UNK = 0,
MDRR_PARENT = 1,
MDRR_SELF = 2,
MDRR_CHILD = 3,
MDRR_NROLES = MDRR_CHILD
} md_renrole_t;
typedef struct md_rendelta_status {
uint_t spare_beg :1;
uint_t locked :1;
uint_t checked :1;
uint_t role_swapped :1;
uint_t unlocked :1;
uint_t spacer :2;
uint_t is_open :1;
uint_t spare_end;
} md_rendstat_t;
typedef struct md_rentxn_status {
uint_t spare_beg :1;
uint_t trans_in_stack :1;
uint_t spare_end;
} md_rentstat_t;
typedef struct md_rename_transaction {
u_longlong_t beginning;
md_error_t mde;
md_renop_t op;
int revision;
uint_t uflags;
int rec_idx;
mddb_recid_t *recids;
int n_recids;
md_rentstat_t stat;
struct md_rename_txn_unit_state {
u_longlong_t beginning;
minor_t mnum;
mdi_unit_t *uip;
md_unit_t *unp;
key_t key;
kstat_t *kstatp;
u_longlong_t end;
} from, to;
u_longlong_t end;
} md_rentxn_t;
typedef struct md_rendelta md_rendelta_t;
typedef void md_ren_void_svc_t(md_rendelta_t *, md_rentxn_t *);
typedef intptr_t md_ren_svc_t(md_rendelta_t *, md_rentxn_t *);
typedef int md_ren_list_svc_t(md_rendelta_t **, md_rentxn_t *);
typedef md_ren_void_svc_t md_ren_roleswap_svc_t;
struct md_rendelta {
u_longlong_t beginning;
md_rendelta_t *next, *prev;
md_dev64_t dev;
md_renrole_t old_role, new_role;
md_unit_t *unp;
mdi_unit_t *uip;
md_ren_svc_t *lock;
md_ren_void_svc_t *unlock;
md_ren_svc_t *check;
md_ren_roleswap_svc_t *role_swap;
md_rendstat_t txn_stat;
u_longlong_t end;
};
/* Externals from md_rename.c */
extern int md_rename(md_rename_t *, IOLOCK *);
extern md_rendelta_t *md_build_rendelta(md_renrole_t, md_renrole_t,
md_dev64_t, md_rendelta_t *, md_unit_t *, mdi_unit_t *, md_error_t *);
extern void md_store_recid(int *, mddb_recid_t *, md_unit_t *);
#endif /* _KERNEL */
#ifdef __cplusplus
}
#endif
#endif /* _SYS_MD_RENAME_H */
|
