Commit | Line | Data |
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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 | 34 | |
7c67db3a TM |
35 | struct rpc_cred *cl_machine_cred; |
36 | ||
24c8dbbb DH |
37 | #ifdef CONFIG_NFS_V4 |
38 | u64 cl_clientid; /* constant */ | |
39 | nfs4_verifier cl_confirm; | |
40 | unsigned long cl_state; | |
41 | ||
9f958ab8 TM |
42 | struct rb_root cl_openowner_id; |
43 | struct rb_root cl_lockowner_id; | |
24c8dbbb DH |
44 | |
45 | /* | |
46 | * The following rwsem ensures exclusive access to the server | |
47 | * while we recover the state following a lease expiration. | |
48 | */ | |
49 | struct rw_semaphore cl_sem; | |
50 | ||
51 | struct list_head cl_delegations; | |
9f958ab8 | 52 | struct rb_root cl_state_owners; |
24c8dbbb DH |
53 | spinlock_t cl_lock; |
54 | ||
55 | unsigned long cl_lease_time; | |
56 | unsigned long cl_last_renewal; | |
52bad64d | 57 | struct delayed_work cl_renewd; |
24c8dbbb DH |
58 | |
59 | struct rpc_wait_queue cl_rpcwaitq; | |
60 | ||
61 | /* used for the setclientid verifier */ | |
62 | struct timespec cl_boot_time; | |
63 | ||
64 | /* idmapper */ | |
65 | struct idmap * cl_idmap; | |
66 | ||
67 | /* Our own IP address, as a null-terminated string. | |
68 | * This is used to generate the clientid, and the callback address. | |
69 | */ | |
4392f259 | 70 | char cl_ipaddr[48]; |
24c8dbbb DH |
71 | unsigned char cl_id_uniquifier; |
72 | #endif | |
73 | }; | |
74 | ||
1da177e4 LT |
75 | /* |
76 | * NFS client parameters stored in the superblock. | |
77 | */ | |
78 | struct nfs_server { | |
27951bd2 | 79 | struct nfs_client * nfs_client; /* shared client and NFS4 state */ |
54ceac45 DH |
80 | struct list_head client_link; /* List of other nfs_server structs |
81 | * that share the same client | |
82 | */ | |
83 | struct list_head master_link; /* link in master servers list */ | |
1da177e4 | 84 | struct rpc_clnt * client; /* RPC client handle */ |
b7fa0554 | 85 | struct rpc_clnt * client_acl; /* ACL RPC client handle */ |
9289e7f9 | 86 | struct nlm_host *nlm_host; /* NLM client handle */ |
d9ef5a8c | 87 | struct nfs_iostats * io_stats; /* I/O statistics */ |
1da177e4 | 88 | struct backing_dev_info backing_dev_info; |
277866a0 | 89 | atomic_long_t writeback; /* number of writeback pages */ |
1da177e4 LT |
90 | int flags; /* various flags */ |
91 | unsigned int caps; /* server capabilities */ | |
92 | unsigned int rsize; /* read size */ | |
93 | unsigned int rpages; /* read size (in pages) */ | |
94 | unsigned int wsize; /* write size */ | |
95 | unsigned int wpages; /* write size (in pages) */ | |
96 | unsigned int wtmult; /* server disk block size */ | |
97 | unsigned int dtsize; /* readdir size */ | |
f22d6d79 | 98 | unsigned short port; /* "port=" setting */ |
1da177e4 LT |
99 | unsigned int bsize; /* server block size */ |
100 | unsigned int acregmin; /* attr cache timeouts */ | |
101 | unsigned int acregmax; | |
102 | unsigned int acdirmin; | |
103 | unsigned int acdirmax; | |
104 | unsigned int namelen; | |
54ceac45 | 105 | |
8b4bdcf8 | 106 | struct nfs_fsid fsid; |
54ceac45 | 107 | __u64 maxfilesize; /* maximum file size */ |
67ec9f46 | 108 | unsigned long mount_time; /* when this fs was mounted */ |
54ceac45 DH |
109 | dev_t s_dev; /* superblock dev numbers */ |
110 | ||
1da177e4 | 111 | #ifdef CONFIG_NFS_V4 |
1da177e4 LT |
112 | u32 attr_bitmask[2];/* V4 bitmask representing the set |
113 | of attributes supported on this | |
114 | filesystem */ | |
115 | u32 acl_bitmask; /* V4 bitmask representing the ACEs | |
116 | that are supported on this | |
117 | filesystem */ | |
118 | #endif | |
54ceac45 | 119 | void (*destroy)(struct nfs_server *); |
ef818a28 SD |
120 | |
121 | atomic_t active; /* Keep trace of any activity to this server */ | |
122 | wait_queue_head_t active_wq; /* Wait for any activity to stop */ | |
3f8400d1 CL |
123 | |
124 | /* mountd-related mount options */ | |
125 | struct sockaddr_storage mountd_address; | |
126 | size_t mountd_addrlen; | |
127 | u32 mountd_version; | |
128 | unsigned short mountd_port; | |
129 | unsigned short mountd_protocol; | |
1da177e4 LT |
130 | }; |
131 | ||
132 | /* Server capabilities */ | |
133 | #define NFS_CAP_READDIRPLUS (1U << 0) | |
134 | #define NFS_CAP_HARDLINKS (1U << 1) | |
135 | #define NFS_CAP_SYMLINKS (1U << 2) | |
136 | #define NFS_CAP_ACLS (1U << 3) | |
137 | #define NFS_CAP_ATOMIC_OPEN (1U << 4) | |
138 | ||
139 | #endif |