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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
1da177e4 LT |
2 | #ifndef _NFS_FS_SB |
3 | #define _NFS_FS_SB | |
4 | ||
5 | #include <linux/list.h> | |
6 | #include <linux/backing-dev.h> | |
9157c31d | 7 | #include <linux/idr.h> |
ef818a28 | 8 | #include <linux/wait.h> |
557134a3 AA |
9 | #include <linux/nfs_xdr.h> |
10 | #include <linux/sunrpc/xprt.h> | |
ef818a28 | 11 | |
60063497 | 12 | #include <linux/atomic.h> |
212bf41d | 13 | #include <linux/refcount.h> |
1da177e4 | 14 | |
557134a3 | 15 | struct nfs4_session; |
d9ef5a8c | 16 | struct nfs_iostats; |
9289e7f9 | 17 | struct nlm_host; |
cccef3b9 AA |
18 | struct nfs4_sequence_args; |
19 | struct nfs4_sequence_res; | |
20 | struct nfs_server; | |
97dc1359 | 21 | struct nfs4_minor_version_ops; |
79d4e1f0 | 22 | struct nfs41_server_scope; |
7d2ed9ac | 23 | struct nfs41_impl_id; |
d9ef5a8c | 24 | |
24c8dbbb DH |
25 | /* |
26 | * The nfs_client identifies our client state to the server. | |
27 | */ | |
28 | struct nfs_client { | |
212bf41d | 29 | refcount_t cl_count; |
2a4c8994 | 30 | atomic_t cl_mds_count; |
24c8dbbb DH |
31 | int cl_cons_state; /* current construction state (-ve: init error) */ |
32 | #define NFS_CS_READY 0 /* ready to be used */ | |
33 | #define NFS_CS_INITING 1 /* busy initialising */ | |
76db6d95 | 34 | #define NFS_CS_SESSION_INITING 2 /* busy initialising session */ |
24c8dbbb | 35 | unsigned long cl_res_state; /* NFS resources state */ |
24c8dbbb DH |
36 | #define NFS_CS_CALLBACK 1 /* - callback started */ |
37 | #define NFS_CS_IDMAP 2 /* - idmap started */ | |
5dd3177a | 38 | #define NFS_CS_RENEWD 3 /* - renewd started */ |
d3b4c9d7 | 39 | #define NFS_CS_STOP_RENEW 4 /* no more state to renew */ |
d6fb79d4 | 40 | #define NFS_CS_CHECK_LEASE_TIME 5 /* need to check lease time */ |
4bf590e0 CL |
41 | unsigned long cl_flags; /* behavior switches */ |
42 | #define NFS_CS_NORESVPORT 0 /* - use ephemeral src port */ | |
43 | #define NFS_CS_DISCRTRY 1 /* - disconnect on RPC retry */ | |
89652617 | 44 | #define NFS_CS_MIGRATION 2 /* - transparent state migr */ |
98f98cf5 | 45 | #define NFS_CS_INFINITE_SLOTS 3 /* - don't limit TCP slots */ |
99875249 | 46 | #define NFS_CS_NO_RETRANS_TIMEOUT 4 /* - Disable retransmit timeouts */ |
8dcbec6d | 47 | #define NFS_CS_TSM_POSSIBLE 5 /* - Maybe state migration */ |
4b1b69ce | 48 | #define NFS_CS_NOPING 6 /* - don't ping on connect */ |
52f98f1a | 49 | #define NFS_CS_DS 7 /* - Server is a DS */ |
e6237b6f | 50 | #define NFS_CS_REUSEPORT 8 /* - reuse src port on reconnect */ |
806a3bc4 | 51 | #define NFS_CS_PNFS 9 /* - Server used for pnfs */ |
6e4cffd7 CL |
52 | struct sockaddr_storage cl_addr; /* server identifier */ |
53 | size_t cl_addrlen; | |
24c8dbbb | 54 | char * cl_hostname; /* hostname of server */ |
f11b2a1c | 55 | char * cl_acceptor; /* GSSAPI acceptor name */ |
24c8dbbb DH |
56 | struct list_head cl_share_link; /* link in global client list */ |
57 | struct list_head cl_superblocks; /* List of nfs_server structs */ | |
58 | ||
59 | struct rpc_clnt * cl_rpcclient; | |
8fa5c000 | 60 | const struct nfs_rpc_ops *rpc_ops; /* NFS protocol vector */ |
59dca3b2 | 61 | int cl_proto; /* Network transport protocol */ |
ab7017a3 | 62 | struct nfs_subversion * cl_nfs_mod; /* pointer to nfs version module */ |
24c8dbbb | 63 | |
94a417f3 | 64 | u32 cl_minorversion;/* NFSv4 minorversion */ |
6619079d | 65 | unsigned int cl_nconnect; /* Number of connections */ |
7e134205 | 66 | unsigned int cl_max_connect; /* max number of xprts allowed */ |
6c0a8c5f CL |
67 | const char * cl_principal; /* used for machine cred */ |
68 | struct xprtsec_parms cl_xprtsec; /* xprt security policy */ | |
7c67db3a | 69 | |
89d77c8f | 70 | #if IS_ENABLED(CONFIG_NFS_V4) |
0e20162e | 71 | struct list_head cl_ds_clients; /* auth flavor data servers */ |
24c8dbbb | 72 | u64 cl_clientid; /* constant */ |
fd954ae1 | 73 | nfs4_verifier cl_confirm; /* Clientid verifier */ |
24c8dbbb DH |
74 | unsigned long cl_state; |
75 | ||
24c8dbbb DH |
76 | spinlock_t cl_lock; |
77 | ||
78 | unsigned long cl_lease_time; | |
79 | unsigned long cl_last_renewal; | |
52bad64d | 80 | struct delayed_work cl_renewd; |
24c8dbbb DH |
81 | |
82 | struct rpc_wait_queue cl_rpcwaitq; | |
83 | ||
24c8dbbb DH |
84 | /* idmapper */ |
85 | struct idmap * cl_idmap; | |
86 | ||
ceb3a16c TM |
87 | /* Client owner identifier */ |
88 | const char * cl_owner_id; | |
89 | ||
f4eecd5d | 90 | u32 cl_cb_ident; /* v4.0 callback identifier */ |
97dc1359 | 91 | const struct nfs4_minor_version_ops *cl_mvops; |
c9fdeb28 | 92 | unsigned long cl_mig_gen; |
14727281 | 93 | |
abf79bb3 CL |
94 | /* NFSv4.0 transport blocking */ |
95 | struct nfs4_slot_table *cl_slot_tbl; | |
96 | ||
99fe60d0 BH |
97 | /* The sequence id to use for the next CREATE_SESSION */ |
98 | u32 cl_seqid; | |
99 | /* The flags used for obtaining the clientid during EXCHANGE_ID */ | |
100 | u32 cl_exchange_flags; | |
722baafc | 101 | struct nfs4_session *cl_session; /* shared session */ |
05f4c350 | 102 | bool cl_preserve_clid; |
acdeb69d | 103 | struct nfs41_server_owner *cl_serverowner; |
79d4e1f0 | 104 | struct nfs41_server_scope *cl_serverscope; |
59155546 | 105 | struct nfs41_impl_id *cl_implid; |
2031cd1a WAA |
106 | /* nfs 4.1+ state protection modes: */ |
107 | unsigned long cl_sp4_flags; | |
108 | #define NFS_SP4_MACH_CRED_MINIMAL 1 /* Minimal sp4_mach_cred - state ops | |
109 | * must use machine cred */ | |
fa940720 | 110 | #define NFS_SP4_MACH_CRED_CLEANUP 2 /* CLOSE and LOCKU */ |
8b5bee2e | 111 | #define NFS_SP4_MACH_CRED_SECINFO 3 /* SECINFO and SECINFO_NO_NAME */ |
3787d506 | 112 | #define NFS_SP4_MACH_CRED_STATEID 4 /* TEST_STATEID and FREE_STATEID */ |
8c21c62c WAA |
113 | #define NFS_SP4_MACH_CRED_WRITE 5 /* WRITE */ |
114 | #define NFS_SP4_MACH_CRED_COMMIT 6 /* COMMIT */ | |
99ade3c7 | 115 | #define NFS_SP4_MACH_CRED_PNFS_CLEANUP 7 /* LAYOUTRETURN */ |
a1d617d8 JL |
116 | #if IS_ENABLED(CONFIG_NFS_V4_1) |
117 | wait_queue_head_t cl_lock_waitq; | |
118 | #endif /* CONFIG_NFS_V4_1 */ | |
0400a6b0 | 119 | #endif /* CONFIG_NFS_V4 */ |
557134a3 | 120 | |
1a04c6e1 PT |
121 | /* Our own IP address, as a null-terminated string. |
122 | * This is used to generate the mv0 callback address. | |
123 | */ | |
124 | char cl_ipaddr[48]; | |
73ea666c | 125 | struct net *cl_net; |
bc0c9079 | 126 | struct list_head pending_cb_stateids; |
c1b967d0 | 127 | struct rcu_head rcu; |
24c8dbbb DH |
128 | }; |
129 | ||
1da177e4 LT |
130 | /* |
131 | * NFS client parameters stored in the superblock. | |
132 | */ | |
133 | struct nfs_server { | |
27951bd2 | 134 | struct nfs_client * nfs_client; /* shared client and NFS4 state */ |
54ceac45 DH |
135 | struct list_head client_link; /* List of other nfs_server structs |
136 | * that share the same client | |
137 | */ | |
138 | struct list_head master_link; /* link in master servers list */ | |
1da177e4 | 139 | struct rpc_clnt * client; /* RPC client handle */ |
b7fa0554 | 140 | struct rpc_clnt * client_acl; /* ACL RPC client handle */ |
9289e7f9 | 141 | struct nlm_host *nlm_host; /* NLM client handle */ |
003cb608 | 142 | struct nfs_iostats __percpu *io_stats; /* I/O statistics */ |
277866a0 | 143 | atomic_long_t writeback; /* number of writeback pages */ |
6df25e58 | 144 | unsigned int write_congested;/* flag set when writeback gets too high */ |
75cfb200 | 145 | unsigned int flags; /* various flags */ |
7b1355b6 TM |
146 | |
147 | /* The following are for internal use only. Also see uapi/linux/nfs_mount.h */ | |
148 | #define NFS_MOUNT_LOOKUP_CACHE_NONEG 0x10000 | |
149 | #define NFS_MOUNT_LOOKUP_CACHE_NONE 0x20000 | |
150 | #define NFS_MOUNT_NORESVPORT 0x40000 | |
151 | #define NFS_MOUNT_LEGACY_INTERFACE 0x80000 | |
152 | #define NFS_MOUNT_LOCAL_FLOCK 0x100000 | |
153 | #define NFS_MOUNT_LOCAL_FCNTL 0x200000 | |
91a575e1 | 154 | #define NFS_MOUNT_SOFTERR 0x400000 |
c74dfe97 | 155 | #define NFS_MOUNT_SOFTREVAL 0x800000 |
ed7bcdb3 TM |
156 | #define NFS_MOUNT_WRITE_EAGER 0x01000000 |
157 | #define NFS_MOUNT_WRITE_WAIT 0x02000000 | |
a43bf604 | 158 | #define NFS_MOUNT_TRUNK_DISCOVERY 0x04000000 |
d9615d16 | 159 | #define NFS_MOUNT_SHUTDOWN 0x08000000 |
7b1355b6 | 160 | |
d99f2487 | 161 | unsigned int fattr_valid; /* Valid attributes */ |
1da177e4 LT |
162 | unsigned int caps; /* server capabilities */ |
163 | unsigned int rsize; /* read size */ | |
164 | unsigned int rpages; /* read size (in pages) */ | |
165 | unsigned int wsize; /* write size */ | |
166 | unsigned int wpages; /* write size (in pages) */ | |
167 | unsigned int wtmult; /* server disk block size */ | |
168 | unsigned int dtsize; /* readdir size */ | |
f22d6d79 | 169 | unsigned short port; /* "port=" setting */ |
1da177e4 | 170 | unsigned int bsize; /* server block size */ |
04a5da69 FL |
171 | #ifdef CONFIG_NFS_V4_2 |
172 | unsigned int gxasize; /* getxattr size */ | |
173 | unsigned int sxasize; /* setxattr size */ | |
174 | unsigned int lxasize; /* listxattr size */ | |
175 | #endif | |
1da177e4 LT |
176 | unsigned int acregmin; /* attr cache timeouts */ |
177 | unsigned int acregmax; | |
178 | unsigned int acdirmin; | |
179 | unsigned int acdirmax; | |
180 | unsigned int namelen; | |
c6a6f19e | 181 | unsigned int options; /* extra options enabled by mount */ |
2a92ee92 | 182 | unsigned int clone_blksize; /* granularity of a CLONE operation */ |
c6a6f19e | 183 | #define NFS_OPTION_FSCACHE 0x00000001 /* - local caching enabled */ |
89652617 | 184 | #define NFS_OPTION_MIGRATION 0x00000002 /* - NFSv4 migration enabled */ |
54ceac45 | 185 | |
7f08a335 TM |
186 | enum nfs4_change_attr_type |
187 | change_attr_type;/* Description of change attribute */ | |
188 | ||
8b4bdcf8 | 189 | struct nfs_fsid fsid; |
1c725118 | 190 | int s_sysfs_id; /* sysfs dentry index */ |
54ceac45 | 191 | __u64 maxfilesize; /* maximum file size */ |
e86d5a02 | 192 | struct timespec64 time_delta; /* smallest time granularity */ |
67ec9f46 | 193 | unsigned long mount_time; /* when this fs was mounted */ |
ce6cda18 | 194 | struct super_block *super; /* VFS super block */ |
54ceac45 | 195 | dev_t s_dev; /* superblock dev numbers */ |
0f5f49b8 | 196 | struct nfs_auth_info auth_info; /* parsed auth flavors */ |
54ceac45 | 197 | |
08734048 | 198 | #ifdef CONFIG_NFS_FSCACHE |
a6b5a28e DW |
199 | struct fscache_volume *fscache; /* superblock cookie */ |
200 | char *fscache_uniq; /* Uniquifier (or NULL) */ | |
08734048 DH |
201 | #endif |
202 | ||
a00ed25c | 203 | u32 pnfs_blksize; /* layout_blksize attr */ |
89d77c8f | 204 | #if IS_ENABLED(CONFIG_NFS_V4) |
dae100c2 | 205 | u32 attr_bitmask[3];/* V4 bitmask representing the set |
1da177e4 LT |
206 | of attributes supported on this |
207 | filesystem */ | |
aa9c2669 DQ |
208 | u32 attr_bitmask_nl[3]; |
209 | /* V4 bitmask representing the | |
210 | set of attributes supported | |
211 | on this filesystem excluding | |
212 | the label support bit. */ | |
8c61282f KM |
213 | u32 exclcreat_bitmask[3]; |
214 | /* V4 bitmask representing the | |
215 | set of attributes supported | |
216 | on this filesystem for the | |
217 | exclusive create. */ | |
a09df2ca | 218 | u32 cache_consistency_bitmask[3]; |
a65318bf TM |
219 | /* V4 bitmask representing the subset |
220 | of change attribute, size, ctime | |
221 | and mtime attributes supported by | |
222 | the server */ | |
1da177e4 LT |
223 | u32 acl_bitmask; /* V4 bitmask representing the ACEs |
224 | that are supported on this | |
225 | filesystem */ | |
264e6351 CL |
226 | u32 fh_expire_type; /* V4 bitmask representing file |
227 | handle volatility type for | |
228 | this filesystem */ | |
85e174ba | 229 | struct pnfs_layoutdriver_type *pnfs_curr_ld; /* Active layout driver */ |
f7e8917a | 230 | struct rpc_wait_queue roc_rpcwaitq; |
2f9fd182 | 231 | void *pnfs_ld_data; /* per mount point data */ |
24d292b8 CL |
232 | |
233 | /* the following fields are protected by nfs_client->cl_lock */ | |
234 | struct rb_root state_owners; | |
1da177e4 | 235 | #endif |
9157c31d | 236 | struct ida openowner_id; |
d2d7ce28 | 237 | struct ida lockowner_id; |
0aaaf5c4 | 238 | struct list_head state_owners_lru; |
6382a441 | 239 | struct list_head layouts; |
d3978bb3 | 240 | struct list_head delegations; |
62164f31 | 241 | struct list_head ss_copies; |
c9fdeb28 | 242 | |
a9b8d90f | 243 | unsigned long delegation_gen; |
c9fdeb28 CL |
244 | unsigned long mig_gen; |
245 | unsigned long mig_status; | |
246 | #define NFS_MIG_IN_TRANSITION (1) | |
247 | #define NFS_MIG_FAILED (2) | |
8dcbec6d | 248 | #define NFS_MIG_TSM_POSSIBLE (3) |
c9fdeb28 | 249 | |
54ceac45 | 250 | void (*destroy)(struct nfs_server *); |
ef818a28 SD |
251 | |
252 | atomic_t active; /* Keep trace of any activity to this server */ | |
3f8400d1 CL |
253 | |
254 | /* mountd-related mount options */ | |
255 | struct sockaddr_storage mountd_address; | |
256 | size_t mountd_addrlen; | |
257 | u32 mountd_version; | |
258 | unsigned short mountd_port; | |
259 | unsigned short mountd_protocol; | |
7d6ddf88 | 260 | struct rpc_wait_queue uoc_rpcwaitq; |
8d8928d8 TM |
261 | |
262 | /* XDR related information */ | |
263 | unsigned int read_hdrsize; | |
1a58e8a0 TM |
264 | |
265 | /* User namespace info */ | |
266 | const struct cred *cred; | |
ec1ade6a | 267 | bool has_sec_mnt_opts; |
1c725118 | 268 | struct kobject kobj; |
c1b967d0 | 269 | struct rcu_head rcu; |
1da177e4 LT |
270 | }; |
271 | ||
272 | /* Server capabilities */ | |
273 | #define NFS_CAP_READDIRPLUS (1U << 0) | |
274 | #define NFS_CAP_HARDLINKS (1U << 1) | |
275 | #define NFS_CAP_SYMLINKS (1U << 2) | |
276 | #define NFS_CAP_ACLS (1U << 3) | |
277 | #define NFS_CAP_ATOMIC_OPEN (1U << 4) | |
6e01260c | 278 | #define NFS_CAP_LGOPEN (1U << 5) |
1ab5be4a TM |
279 | #define NFS_CAP_CASE_INSENSITIVE (1U << 6) |
280 | #define NFS_CAP_CASE_PRESERVING (1U << 7) | |
0df5dd4a | 281 | #define NFS_CAP_POSIX_LOCK (1U << 14) |
b064eca2 | 282 | #define NFS_CAP_UIDGID_NOMAP (1U << 15) |
3b66486c | 283 | #define NFS_CAP_STATEID_NFSV41 (1U << 16) |
49f9a0fa | 284 | #define NFS_CAP_ATOMIC_OPEN_V1 (1U << 17) |
e64a4210 | 285 | #define NFS_CAP_SECURITY_LABEL (1U << 18) |
1c6dcbe5 | 286 | #define NFS_CAP_SEEK (1U << 19) |
f4ac1674 | 287 | #define NFS_CAP_ALLOCATE (1U << 20) |
624bd5b7 | 288 | #define NFS_CAP_DEALLOCATE (1U << 21) |
6c5a0d89 | 289 | #define NFS_CAP_LAYOUTSTATS (1U << 22) |
e5341f3a | 290 | #define NFS_CAP_CLONE (1U << 23) |
2e72448b | 291 | #define NFS_CAP_COPY (1U << 24) |
cb95deea | 292 | #define NFS_CAP_OFFLOAD_CANCEL (1U << 25) |
3eb86093 | 293 | #define NFS_CAP_LAYOUTERROR (1U << 26) |
0491567b | 294 | #define NFS_CAP_COPY_NOTIFY (1U << 27) |
b78ef845 | 295 | #define NFS_CAP_XATTR (1U << 28) |
c5675526 | 296 | #define NFS_CAP_READ_PLUS (1U << 29) |
8a59bb93 | 297 | #define NFS_CAP_FS_LOCATIONS (1U << 30) |
118f09ed | 298 | #define NFS_CAP_MOVEABLE (1U << 31) |
1da177e4 | 299 | #endif |