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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> | |
9157c31d | 6 | #include <linux/idr.h> |
ef818a28 | 7 | #include <linux/wait.h> |
557134a3 AA |
8 | #include <linux/nfs_xdr.h> |
9 | #include <linux/sunrpc/xprt.h> | |
ef818a28 | 10 | |
60063497 | 11 | #include <linux/atomic.h> |
1da177e4 | 12 | |
557134a3 | 13 | struct nfs4_session; |
d9ef5a8c | 14 | struct nfs_iostats; |
9289e7f9 | 15 | struct nlm_host; |
cccef3b9 AA |
16 | struct nfs4_sequence_args; |
17 | struct nfs4_sequence_res; | |
18 | struct nfs_server; | |
97dc1359 | 19 | struct nfs4_minor_version_ops; |
79d4e1f0 | 20 | struct nfs41_server_scope; |
7d2ed9ac | 21 | struct nfs41_impl_id; |
d9ef5a8c | 22 | |
24c8dbbb DH |
23 | /* |
24 | * The nfs_client identifies our client state to the server. | |
25 | */ | |
26 | struct nfs_client { | |
27 | atomic_t cl_count; | |
2a4c8994 | 28 | atomic_t cl_mds_count; |
24c8dbbb DH |
29 | int cl_cons_state; /* current construction state (-ve: init error) */ |
30 | #define NFS_CS_READY 0 /* ready to be used */ | |
31 | #define NFS_CS_INITING 1 /* busy initialising */ | |
76db6d95 | 32 | #define NFS_CS_SESSION_INITING 2 /* busy initialising session */ |
24c8dbbb | 33 | unsigned long cl_res_state; /* NFS resources state */ |
24c8dbbb DH |
34 | #define NFS_CS_CALLBACK 1 /* - callback started */ |
35 | #define NFS_CS_IDMAP 2 /* - idmap started */ | |
5dd3177a | 36 | #define NFS_CS_RENEWD 3 /* - renewd started */ |
d3b4c9d7 | 37 | #define NFS_CS_STOP_RENEW 4 /* no more state to renew */ |
d6fb79d4 | 38 | #define NFS_CS_CHECK_LEASE_TIME 5 /* need to check lease time */ |
4bf590e0 CL |
39 | unsigned long cl_flags; /* behavior switches */ |
40 | #define NFS_CS_NORESVPORT 0 /* - use ephemeral src port */ | |
41 | #define NFS_CS_DISCRTRY 1 /* - disconnect on RPC retry */ | |
89652617 | 42 | #define NFS_CS_MIGRATION 2 /* - transparent state migr */ |
98f98cf5 | 43 | #define NFS_CS_INFINITE_SLOTS 3 /* - don't limit TCP slots */ |
6e4cffd7 CL |
44 | struct sockaddr_storage cl_addr; /* server identifier */ |
45 | size_t cl_addrlen; | |
24c8dbbb DH |
46 | char * cl_hostname; /* hostname of server */ |
47 | struct list_head cl_share_link; /* link in global client list */ | |
48 | struct list_head cl_superblocks; /* List of nfs_server structs */ | |
49 | ||
50 | struct rpc_clnt * cl_rpcclient; | |
8fa5c000 | 51 | const struct nfs_rpc_ops *rpc_ops; /* NFS protocol vector */ |
59dca3b2 | 52 | int cl_proto; /* Network transport protocol */ |
ab7017a3 | 53 | struct nfs_subversion * cl_nfs_mod; /* pointer to nfs version module */ |
24c8dbbb | 54 | |
94a417f3 | 55 | u32 cl_minorversion;/* NFSv4 minorversion */ |
7c67db3a TM |
56 | struct rpc_cred *cl_machine_cred; |
57 | ||
89d77c8f | 58 | #if IS_ENABLED(CONFIG_NFS_V4) |
24c8dbbb | 59 | u64 cl_clientid; /* constant */ |
fd954ae1 | 60 | nfs4_verifier cl_confirm; /* Clientid verifier */ |
24c8dbbb DH |
61 | unsigned long cl_state; |
62 | ||
24c8dbbb DH |
63 | spinlock_t cl_lock; |
64 | ||
65 | unsigned long cl_lease_time; | |
66 | unsigned long cl_last_renewal; | |
52bad64d | 67 | struct delayed_work cl_renewd; |
24c8dbbb DH |
68 | |
69 | struct rpc_wait_queue cl_rpcwaitq; | |
70 | ||
24c8dbbb DH |
71 | /* idmapper */ |
72 | struct idmap * cl_idmap; | |
73 | ||
74 | /* Our own IP address, as a null-terminated string. | |
de734831 | 75 | * This is used to generate the mv0 callback address. |
24c8dbbb | 76 | */ |
4392f259 | 77 | char cl_ipaddr[48]; |
f4eecd5d | 78 | u32 cl_cb_ident; /* v4.0 callback identifier */ |
97dc1359 | 79 | const struct nfs4_minor_version_ops *cl_mvops; |
14727281 | 80 | |
abf79bb3 CL |
81 | /* NFSv4.0 transport blocking */ |
82 | struct nfs4_slot_table *cl_slot_tbl; | |
83 | ||
99fe60d0 BH |
84 | /* The sequence id to use for the next CREATE_SESSION */ |
85 | u32 cl_seqid; | |
86 | /* The flags used for obtaining the clientid during EXCHANGE_ID */ | |
87 | u32 cl_exchange_flags; | |
722baafc | 88 | struct nfs4_session *cl_session; /* shared session */ |
05f4c350 | 89 | bool cl_preserve_clid; |
acdeb69d | 90 | struct nfs41_server_owner *cl_serverowner; |
79d4e1f0 | 91 | struct nfs41_server_scope *cl_serverscope; |
59155546 | 92 | struct nfs41_impl_id *cl_implid; |
2031cd1a WAA |
93 | /* nfs 4.1+ state protection modes: */ |
94 | unsigned long cl_sp4_flags; | |
95 | #define NFS_SP4_MACH_CRED_MINIMAL 1 /* Minimal sp4_mach_cred - state ops | |
96 | * must use machine cred */ | |
0400a6b0 | 97 | #endif /* CONFIG_NFS_V4 */ |
557134a3 | 98 | |
14727281 DH |
99 | #ifdef CONFIG_NFS_FSCACHE |
100 | struct fscache_cookie *fscache; /* client index cache cookie */ | |
101 | #endif | |
78fe0f41 | 102 | |
73ea666c | 103 | struct net *cl_net; |
24c8dbbb DH |
104 | }; |
105 | ||
1da177e4 LT |
106 | /* |
107 | * NFS client parameters stored in the superblock. | |
108 | */ | |
109 | struct nfs_server { | |
27951bd2 | 110 | struct nfs_client * nfs_client; /* shared client and NFS4 state */ |
54ceac45 DH |
111 | struct list_head client_link; /* List of other nfs_server structs |
112 | * that share the same client | |
113 | */ | |
114 | struct list_head master_link; /* link in master servers list */ | |
1da177e4 | 115 | struct rpc_clnt * client; /* RPC client handle */ |
b7fa0554 | 116 | struct rpc_clnt * client_acl; /* ACL RPC client handle */ |
9289e7f9 | 117 | struct nlm_host *nlm_host; /* NLM client handle */ |
003cb608 | 118 | struct nfs_iostats __percpu *io_stats; /* I/O statistics */ |
1da177e4 | 119 | struct backing_dev_info backing_dev_info; |
277866a0 | 120 | atomic_long_t writeback; /* number of writeback pages */ |
1da177e4 LT |
121 | int flags; /* various flags */ |
122 | unsigned int caps; /* server capabilities */ | |
123 | unsigned int rsize; /* read size */ | |
124 | unsigned int rpages; /* read size (in pages) */ | |
125 | unsigned int wsize; /* write size */ | |
126 | unsigned int wpages; /* write size (in pages) */ | |
127 | unsigned int wtmult; /* server disk block size */ | |
128 | unsigned int dtsize; /* readdir size */ | |
f22d6d79 | 129 | unsigned short port; /* "port=" setting */ |
1da177e4 LT |
130 | unsigned int bsize; /* server block size */ |
131 | unsigned int acregmin; /* attr cache timeouts */ | |
132 | unsigned int acregmax; | |
133 | unsigned int acdirmin; | |
134 | unsigned int acdirmax; | |
135 | unsigned int namelen; | |
c6a6f19e DH |
136 | unsigned int options; /* extra options enabled by mount */ |
137 | #define NFS_OPTION_FSCACHE 0x00000001 /* - local caching enabled */ | |
89652617 | 138 | #define NFS_OPTION_MIGRATION 0x00000002 /* - NFSv4 migration enabled */ |
54ceac45 | 139 | |
8b4bdcf8 | 140 | struct nfs_fsid fsid; |
54ceac45 | 141 | __u64 maxfilesize; /* maximum file size */ |
6b96724e | 142 | struct timespec time_delta; /* smallest time granularity */ |
67ec9f46 | 143 | unsigned long mount_time; /* when this fs was mounted */ |
54ceac45 DH |
144 | dev_t s_dev; /* superblock dev numbers */ |
145 | ||
08734048 DH |
146 | #ifdef CONFIG_NFS_FSCACHE |
147 | struct nfs_fscache_key *fscache_key; /* unique key for superblock */ | |
148 | struct fscache_cookie *fscache; /* superblock cookie */ | |
149 | #endif | |
150 | ||
a00ed25c | 151 | u32 pnfs_blksize; /* layout_blksize attr */ |
89d77c8f | 152 | #if IS_ENABLED(CONFIG_NFS_V4) |
dae100c2 | 153 | u32 attr_bitmask[3];/* V4 bitmask representing the set |
1da177e4 LT |
154 | of attributes supported on this |
155 | filesystem */ | |
aa9c2669 DQ |
156 | u32 attr_bitmask_nl[3]; |
157 | /* V4 bitmask representing the | |
158 | set of attributes supported | |
159 | on this filesystem excluding | |
160 | the label support bit. */ | |
a09df2ca | 161 | u32 cache_consistency_bitmask[3]; |
a65318bf TM |
162 | /* V4 bitmask representing the subset |
163 | of change attribute, size, ctime | |
164 | and mtime attributes supported by | |
165 | the server */ | |
1da177e4 LT |
166 | u32 acl_bitmask; /* V4 bitmask representing the ACEs |
167 | that are supported on this | |
168 | filesystem */ | |
264e6351 CL |
169 | u32 fh_expire_type; /* V4 bitmask representing file |
170 | handle volatility type for | |
171 | this filesystem */ | |
85e174ba | 172 | struct pnfs_layoutdriver_type *pnfs_curr_ld; /* Active layout driver */ |
f7e8917a | 173 | struct rpc_wait_queue roc_rpcwaitq; |
2f9fd182 | 174 | void *pnfs_ld_data; /* per mount point data */ |
24d292b8 CL |
175 | |
176 | /* the following fields are protected by nfs_client->cl_lock */ | |
177 | struct rb_root state_owners; | |
1da177e4 | 178 | #endif |
9157c31d | 179 | struct ida openowner_id; |
d2d7ce28 | 180 | struct ida lockowner_id; |
0aaaf5c4 | 181 | struct list_head state_owners_lru; |
6382a441 | 182 | struct list_head layouts; |
d3978bb3 | 183 | struct list_head delegations; |
54ceac45 | 184 | void (*destroy)(struct nfs_server *); |
ef818a28 SD |
185 | |
186 | atomic_t active; /* Keep trace of any activity to this server */ | |
3f8400d1 CL |
187 | |
188 | /* mountd-related mount options */ | |
189 | struct sockaddr_storage mountd_address; | |
190 | size_t mountd_addrlen; | |
191 | u32 mountd_version; | |
192 | unsigned short mountd_port; | |
193 | unsigned short mountd_protocol; | |
1da177e4 LT |
194 | }; |
195 | ||
196 | /* Server capabilities */ | |
197 | #define NFS_CAP_READDIRPLUS (1U << 0) | |
198 | #define NFS_CAP_HARDLINKS (1U << 1) | |
199 | #define NFS_CAP_SYMLINKS (1U << 2) | |
200 | #define NFS_CAP_ACLS (1U << 3) | |
201 | #define NFS_CAP_ATOMIC_OPEN (1U << 4) | |
62ab460c TM |
202 | #define NFS_CAP_CHANGE_ATTR (1U << 5) |
203 | #define NFS_CAP_FILEID (1U << 6) | |
204 | #define NFS_CAP_MODE (1U << 7) | |
205 | #define NFS_CAP_NLINK (1U << 8) | |
206 | #define NFS_CAP_OWNER (1U << 9) | |
207 | #define NFS_CAP_OWNER_GROUP (1U << 10) | |
208 | #define NFS_CAP_ATIME (1U << 11) | |
209 | #define NFS_CAP_CTIME (1U << 12) | |
210 | #define NFS_CAP_MTIME (1U << 13) | |
0df5dd4a | 211 | #define NFS_CAP_POSIX_LOCK (1U << 14) |
b064eca2 | 212 | #define NFS_CAP_UIDGID_NOMAP (1U << 15) |
3b66486c | 213 | #define NFS_CAP_STATEID_NFSV41 (1U << 16) |
49f9a0fa | 214 | #define NFS_CAP_ATOMIC_OPEN_V1 (1U << 17) |
e64a4210 | 215 | #define NFS_CAP_SECURITY_LABEL (1U << 18) |
1da177e4 LT |
216 | |
217 | #endif |