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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> | |
ef818a28 SD |
6 | #include <linux/wait.h> |
7 | ||
8 | #include <asm/atomic.h> | |
1da177e4 | 9 | |
d9ef5a8c | 10 | struct nfs_iostats; |
9289e7f9 | 11 | struct nlm_host; |
d9ef5a8c | 12 | |
24c8dbbb DH |
13 | /* |
14 | * The nfs_client identifies our client state to the server. | |
15 | */ | |
16 | struct nfs_client { | |
17 | atomic_t cl_count; | |
18 | int cl_cons_state; /* current construction state (-ve: init error) */ | |
19 | #define NFS_CS_READY 0 /* ready to be used */ | |
20 | #define NFS_CS_INITING 1 /* busy initialising */ | |
24c8dbbb | 21 | unsigned long cl_res_state; /* NFS resources state */ |
24c8dbbb DH |
22 | #define NFS_CS_CALLBACK 1 /* - callback started */ |
23 | #define NFS_CS_IDMAP 2 /* - idmap started */ | |
5dd3177a | 24 | #define NFS_CS_RENEWD 3 /* - renewd started */ |
6e4cffd7 CL |
25 | struct sockaddr_storage cl_addr; /* server identifier */ |
26 | size_t cl_addrlen; | |
24c8dbbb DH |
27 | char * cl_hostname; /* hostname of server */ |
28 | struct list_head cl_share_link; /* link in global client list */ | |
29 | struct list_head cl_superblocks; /* List of nfs_server structs */ | |
30 | ||
31 | struct rpc_clnt * cl_rpcclient; | |
8fa5c000 | 32 | const struct nfs_rpc_ops *rpc_ops; /* NFS protocol vector */ |
59dca3b2 | 33 | int cl_proto; /* Network transport protocol */ |
24c8dbbb DH |
34 | |
35 | #ifdef CONFIG_NFS_V4 | |
36 | u64 cl_clientid; /* constant */ | |
37 | nfs4_verifier cl_confirm; | |
38 | unsigned long cl_state; | |
39 | ||
9f958ab8 TM |
40 | struct rb_root cl_openowner_id; |
41 | struct rb_root cl_lockowner_id; | |
24c8dbbb DH |
42 | |
43 | /* | |
44 | * The following rwsem ensures exclusive access to the server | |
45 | * while we recover the state following a lease expiration. | |
46 | */ | |
47 | struct rw_semaphore cl_sem; | |
48 | ||
49 | struct list_head cl_delegations; | |
9f958ab8 | 50 | struct rb_root cl_state_owners; |
24c8dbbb DH |
51 | spinlock_t cl_lock; |
52 | ||
53 | unsigned long cl_lease_time; | |
54 | unsigned long cl_last_renewal; | |
52bad64d | 55 | struct delayed_work cl_renewd; |
24c8dbbb DH |
56 | |
57 | struct rpc_wait_queue cl_rpcwaitq; | |
58 | ||
59 | /* used for the setclientid verifier */ | |
60 | struct timespec cl_boot_time; | |
61 | ||
62 | /* idmapper */ | |
63 | struct idmap * cl_idmap; | |
64 | ||
65 | /* Our own IP address, as a null-terminated string. | |
66 | * This is used to generate the clientid, and the callback address. | |
67 | */ | |
4392f259 | 68 | char cl_ipaddr[48]; |
24c8dbbb DH |
69 | unsigned char cl_id_uniquifier; |
70 | #endif | |
71 | }; | |
72 | ||
1da177e4 LT |
73 | /* |
74 | * NFS client parameters stored in the superblock. | |
75 | */ | |
76 | struct nfs_server { | |
27951bd2 | 77 | struct nfs_client * nfs_client; /* shared client and NFS4 state */ |
54ceac45 DH |
78 | struct list_head client_link; /* List of other nfs_server structs |
79 | * that share the same client | |
80 | */ | |
81 | struct list_head master_link; /* link in master servers list */ | |
1da177e4 | 82 | struct rpc_clnt * client; /* RPC client handle */ |
b7fa0554 | 83 | struct rpc_clnt * client_acl; /* ACL RPC client handle */ |
9289e7f9 | 84 | struct nlm_host *nlm_host; /* NLM client handle */ |
d9ef5a8c | 85 | struct nfs_iostats * io_stats; /* I/O statistics */ |
1da177e4 | 86 | struct backing_dev_info backing_dev_info; |
277866a0 | 87 | atomic_long_t writeback; /* number of writeback pages */ |
1da177e4 LT |
88 | int flags; /* various flags */ |
89 | unsigned int caps; /* server capabilities */ | |
90 | unsigned int rsize; /* read size */ | |
91 | unsigned int rpages; /* read size (in pages) */ | |
92 | unsigned int wsize; /* write size */ | |
93 | unsigned int wpages; /* write size (in pages) */ | |
94 | unsigned int wtmult; /* server disk block size */ | |
95 | unsigned int dtsize; /* readdir size */ | |
96 | unsigned int bsize; /* server block size */ | |
97 | unsigned int acregmin; /* attr cache timeouts */ | |
98 | unsigned int acregmax; | |
99 | unsigned int acdirmin; | |
100 | unsigned int acdirmax; | |
101 | unsigned int namelen; | |
54ceac45 | 102 | |
8b4bdcf8 | 103 | struct nfs_fsid fsid; |
54ceac45 | 104 | __u64 maxfilesize; /* maximum file size */ |
67ec9f46 | 105 | unsigned long mount_time; /* when this fs was mounted */ |
54ceac45 DH |
106 | dev_t s_dev; /* superblock dev numbers */ |
107 | ||
1da177e4 | 108 | #ifdef CONFIG_NFS_V4 |
1da177e4 LT |
109 | u32 attr_bitmask[2];/* V4 bitmask representing the set |
110 | of attributes supported on this | |
111 | filesystem */ | |
112 | u32 acl_bitmask; /* V4 bitmask representing the ACEs | |
113 | that are supported on this | |
114 | filesystem */ | |
115 | #endif | |
54ceac45 | 116 | void (*destroy)(struct nfs_server *); |
ef818a28 SD |
117 | |
118 | atomic_t active; /* Keep trace of any activity to this server */ | |
119 | wait_queue_head_t active_wq; /* Wait for any activity to stop */ | |
1da177e4 LT |
120 | }; |
121 | ||
122 | /* Server capabilities */ | |
123 | #define NFS_CAP_READDIRPLUS (1U << 0) | |
124 | #define NFS_CAP_HARDLINKS (1U << 1) | |
125 | #define NFS_CAP_SYMLINKS (1U << 2) | |
126 | #define NFS_CAP_ACLS (1U << 3) | |
127 | #define NFS_CAP_ATOMIC_OPEN (1U << 4) | |
128 | ||
129 | #endif |