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1da177e4 LT |
1 | #ifndef _NFS_FS_SB |
2 | #define _NFS_FS_SB | |
3 | ||
4 | #include <linux/list.h> | |
5 | #include <linux/backing-dev.h> | |
6 | ||
d9ef5a8c CL |
7 | struct nfs_iostats; |
8 | ||
24c8dbbb DH |
9 | /* |
10 | * The nfs_client identifies our client state to the server. | |
11 | */ | |
12 | struct nfs_client { | |
13 | atomic_t cl_count; | |
14 | int cl_cons_state; /* current construction state (-ve: init error) */ | |
15 | #define NFS_CS_READY 0 /* ready to be used */ | |
16 | #define NFS_CS_INITING 1 /* busy initialising */ | |
17 | int cl_nfsversion; /* NFS protocol version */ | |
18 | unsigned long cl_res_state; /* NFS resources state */ | |
24c8dbbb DH |
19 | #define NFS_CS_CALLBACK 1 /* - callback started */ |
20 | #define NFS_CS_IDMAP 2 /* - idmap started */ | |
5dd3177a | 21 | #define NFS_CS_RENEWD 3 /* - renewd started */ |
24c8dbbb DH |
22 | struct sockaddr_in cl_addr; /* server identifier */ |
23 | char * cl_hostname; /* hostname of server */ | |
24 | struct list_head cl_share_link; /* link in global client list */ | |
25 | struct list_head cl_superblocks; /* List of nfs_server structs */ | |
26 | ||
27 | struct rpc_clnt * cl_rpcclient; | |
8fa5c000 | 28 | const struct nfs_rpc_ops *rpc_ops; /* NFS protocol vector */ |
5006a76c DH |
29 | unsigned long retrans_timeo; /* retransmit timeout */ |
30 | unsigned int retrans_count; /* number of retransmit tries */ | |
24c8dbbb DH |
31 | |
32 | #ifdef CONFIG_NFS_V4 | |
33 | u64 cl_clientid; /* constant */ | |
34 | nfs4_verifier cl_confirm; | |
35 | unsigned long cl_state; | |
36 | ||
37 | u32 cl_lockowner_id; | |
38 | ||
39 | /* | |
40 | * The following rwsem ensures exclusive access to the server | |
41 | * while we recover the state following a lease expiration. | |
42 | */ | |
43 | struct rw_semaphore cl_sem; | |
44 | ||
45 | struct list_head cl_delegations; | |
46 | struct list_head cl_state_owners; | |
24c8dbbb DH |
47 | spinlock_t cl_lock; |
48 | ||
49 | unsigned long cl_lease_time; | |
50 | unsigned long cl_last_renewal; | |
52bad64d | 51 | struct delayed_work cl_renewd; |
24c8dbbb DH |
52 | |
53 | struct rpc_wait_queue cl_rpcwaitq; | |
54 | ||
55 | /* used for the setclientid verifier */ | |
56 | struct timespec cl_boot_time; | |
57 | ||
58 | /* idmapper */ | |
59 | struct idmap * cl_idmap; | |
60 | ||
61 | /* Our own IP address, as a null-terminated string. | |
62 | * This is used to generate the clientid, and the callback address. | |
63 | */ | |
64 | char cl_ipaddr[16]; | |
65 | unsigned char cl_id_uniquifier; | |
66 | #endif | |
67 | }; | |
68 | ||
1da177e4 LT |
69 | /* |
70 | * NFS client parameters stored in the superblock. | |
71 | */ | |
72 | struct nfs_server { | |
27951bd2 | 73 | struct nfs_client * nfs_client; /* shared client and NFS4 state */ |
54ceac45 DH |
74 | struct list_head client_link; /* List of other nfs_server structs |
75 | * that share the same client | |
76 | */ | |
77 | struct list_head master_link; /* link in master servers list */ | |
1da177e4 | 78 | struct rpc_clnt * client; /* RPC client handle */ |
b7fa0554 | 79 | struct rpc_clnt * client_acl; /* ACL RPC client handle */ |
d9ef5a8c | 80 | struct nfs_iostats * io_stats; /* I/O statistics */ |
1da177e4 | 81 | struct backing_dev_info backing_dev_info; |
277866a0 | 82 | atomic_long_t writeback; /* number of writeback pages */ |
1da177e4 LT |
83 | int flags; /* various flags */ |
84 | unsigned int caps; /* server capabilities */ | |
85 | unsigned int rsize; /* read size */ | |
86 | unsigned int rpages; /* read size (in pages) */ | |
87 | unsigned int wsize; /* write size */ | |
88 | unsigned int wpages; /* write size (in pages) */ | |
89 | unsigned int wtmult; /* server disk block size */ | |
90 | unsigned int dtsize; /* readdir size */ | |
91 | unsigned int bsize; /* server block size */ | |
92 | unsigned int acregmin; /* attr cache timeouts */ | |
93 | unsigned int acregmax; | |
94 | unsigned int acdirmin; | |
95 | unsigned int acdirmax; | |
96 | unsigned int namelen; | |
54ceac45 | 97 | |
8b4bdcf8 | 98 | struct nfs_fsid fsid; |
54ceac45 | 99 | __u64 maxfilesize; /* maximum file size */ |
67ec9f46 | 100 | unsigned long mount_time; /* when this fs was mounted */ |
54ceac45 DH |
101 | dev_t s_dev; /* superblock dev numbers */ |
102 | ||
1da177e4 | 103 | #ifdef CONFIG_NFS_V4 |
1da177e4 LT |
104 | u32 attr_bitmask[2];/* V4 bitmask representing the set |
105 | of attributes supported on this | |
106 | filesystem */ | |
107 | u32 acl_bitmask; /* V4 bitmask representing the ACEs | |
108 | that are supported on this | |
109 | filesystem */ | |
110 | #endif | |
54ceac45 | 111 | void (*destroy)(struct nfs_server *); |
1da177e4 LT |
112 | }; |
113 | ||
114 | /* Server capabilities */ | |
115 | #define NFS_CAP_READDIRPLUS (1U << 0) | |
116 | #define NFS_CAP_HARDLINKS (1U << 1) | |
117 | #define NFS_CAP_SYMLINKS (1U << 2) | |
118 | #define NFS_CAP_ACLS (1U << 3) | |
119 | #define NFS_CAP_ATOMIC_OPEN (1U << 4) | |
120 | ||
121 | #endif |