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
|
/*
* linux/include/nfsd/state.h
*
* Copyright (c) 2001 The Regents of the University of Michigan.
* All rights reserved.
*
* Kendrick Smith <kmsmith@umich.edu>
* Andy Adamson <andros@umich.edu>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#ifndef _NFSD4_STATE_H
#define _NFSD4_STATE_H
#include <linux/list.h>
#define NFS4_OPAQUE_LIMIT 1024
typedef struct {
u32 cl_boot;
u32 cl_id;
} clientid_t;
typedef struct {
u32 so_boot;
u32 so_stateownerid;
u32 so_fileid;
} stateid_opaque_t;
typedef struct {
u32 si_generation;
stateid_opaque_t si_opaque;
} stateid_t;
#define si_boot si_opaque.so_boot
#define si_stateownerid si_opaque.so_stateownerid
#define si_fileid si_opaque.so_fileid
/*
* struct nfs4_client - one per client. Clientids live here.
* o Each nfs4_client is hashed by clientid.
*
* o Each nfs4_clients is also hashed by name
* (the opaque quantity initially sent by the client to identify itself).
*
* o cl_perclient list is used to ensure no dangling stateowner references
* when we expire the nfs4_client
*/
struct nfs4_client {
struct list_head cl_idhash; /* hash by cl_clientid.id */
struct list_head cl_strhash; /* hash by cl_name */
struct list_head cl_perclient; /* list: stateowners */
struct xdr_netobj cl_name; /* id generated by client */
nfs4_verifier cl_verifier; /* generated by client */
u32 cl_addr; /* client ipaddress */
struct svc_cred cl_cred; /* setclientid principal */
clientid_t cl_clientid; /* generated by server */
nfs4_verifier cl_confirm; /* generated by server */
};
static inline void
update_stateid(stateid_t *stateid)
{
stateid->si_generation++;
}
/*
* nfs4_stateowner can either be an open_owner, or (eventually) a lock_owner
*
* o so_peropenstate list is used to ensure no dangling nfs4_stateid
* reverences when we release a stateowner.
*/
struct nfs4_stateowner {
struct list_head so_strhash; /* hash by op_name */
struct list_head so_perclient; /* nfs4_client->cl_perclient */
struct list_head so_peropenstate; /* list: nfs4_stateid */
u32 so_id;
struct nfs4_client * so_client;
u32 so_seqid;
struct xdr_netobj so_owner; /* open owner name */
int so_confirmed; /* successful OPEN_CONFIRM? */
};
typedef struct {
u32 dev; /* super_block->s_dev */
unsigned long ino;
u32 generation;
} nfs4_ino_desc_t;
/*
* nfs4_file: a file opened by some number of (open) nfs4_stateowners.
* o fi_perfile list is used to search for conflicting
* share_acces, share_deny on the file.
*/
struct nfs4_file {
struct list_head fi_hash; /* hash by nfs4_ino_desc_t fields */
struct list_head fi_perfile; /* list: nfs4_stateid */
nfs4_ino_desc_t fi_ino;
u32 fi_id; /* used with stateowner->so_id
* for openstateid_hashtbl hash */
};
/*
* nfs4_stateid can either be an open stateid or (eventually) a lock stateid
*
* (open)nfs4_stateid: one per (open)nfs4_stateowner, nfs4_file
*/
struct nfs4_stateid {
struct list_head st_perfile; /* file_hashtbl[]*/
struct list_head st_peropenstate; /* nfs4_stateowner->so_peropenstate */
struct nfs4_stateowner * st_stateowner;
struct nfs4_file * st_file;
stateid_t st_stateid;
struct file st_vfs_file;
int st_vfs_set;
unsigned int st_share_access;
unsigned int st_share_deny;
};
#endif /* NFSD4_STATE_H */
|
