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4ce79717 TM |
1 | /* |
2 | * linux/fs/nfs/nfs4_fs.h | |
3 | * | |
4 | * Copyright (C) 2005 Trond Myklebust | |
5 | * | |
6 | * NFSv4-specific filesystem definitions and declarations | |
7 | */ | |
8 | ||
9 | #ifndef __LINUX_FS_NFS_NFS4_FS_H | |
10 | #define __LINUX_FS_NFS_NFS4_FS_H | |
11 | ||
89d77c8f | 12 | #if IS_ENABLED(CONFIG_NFS_V4) |
4ce79717 | 13 | |
33021279 TM |
14 | #define NFS4_MAX_LOOP_ON_RECOVER (10) |
15 | ||
c137afab TM |
16 | #include <linux/seqlock.h> |
17 | ||
4ce79717 TM |
18 | struct idmap; |
19 | ||
4ce79717 | 20 | enum nfs4_client_state { |
e005e804 | 21 | NFS4CLNT_MANAGER_RUNNING = 0, |
e598d843 | 22 | NFS4CLNT_CHECK_LEASE, |
58d9714a | 23 | NFS4CLNT_LEASE_EXPIRED, |
b79a4a1b TM |
24 | NFS4CLNT_RECLAIM_REBOOT, |
25 | NFS4CLNT_RECLAIM_NOGRACE, | |
707fb4b3 | 26 | NFS4CLNT_DELEGRETURN, |
6df08189 | 27 | NFS4CLNT_SESSION_RESET, |
fd954ae1 | 28 | NFS4CLNT_LEASE_CONFIRM, |
78fe0f41 | 29 | NFS4CLNT_SERVER_SCOPE_MISMATCH, |
2c820d9a | 30 | NFS4CLNT_PURGE_STATE, |
a9e64442 | 31 | NFS4CLNT_BIND_CONN_TO_SESSION, |
c9fdeb28 | 32 | NFS4CLNT_MOVED, |
b7f7a66e | 33 | NFS4CLNT_LEASE_MOVED, |
4ce79717 TM |
34 | }; |
35 | ||
2f60ea6b TM |
36 | #define NFS4_RENEW_TIMEOUT 0x01 |
37 | #define NFS4_RENEW_DELEGATION_CB 0x02 | |
38 | ||
97dc1359 TM |
39 | struct nfs4_minor_version_ops { |
40 | u32 minor_version; | |
39c6daae | 41 | unsigned init_caps; |
97dc1359 | 42 | |
abf79bb3 CL |
43 | int (*init_client)(struct nfs_client *); |
44 | void (*shutdown_client)(struct nfs_client *); | |
36281caa | 45 | bool (*match_stateid)(const nfs4_stateid *, |
e047a10c | 46 | const nfs4_stateid *); |
fca78d6d BS |
47 | int (*find_root_sec)(struct nfs_server *, struct nfs_fh *, |
48 | struct nfs_fsinfo *); | |
c8b2d0bf TM |
49 | int (*free_lock_state)(struct nfs_server *, |
50 | struct nfs4_lock_state *); | |
9915ea7e | 51 | const struct rpc_call_ops *call_sync_ops; |
c48f4f35 TM |
52 | const struct nfs4_state_recovery_ops *reboot_recovery_ops; |
53 | const struct nfs4_state_recovery_ops *nograce_recovery_ops; | |
54 | const struct nfs4_state_maintenance_ops *state_renewal_ops; | |
ec011fe8 | 55 | const struct nfs4_mig_recovery_ops *mig_recovery_ops; |
97dc1359 TM |
56 | }; |
57 | ||
cee54fc9 TM |
58 | #define NFS_SEQID_CONFIRMED 1 |
59 | struct nfs_seqid_counter { | |
95b72eb0 | 60 | ktime_t create_time; |
48c22eb2 | 61 | int owner_id; |
cee54fc9 TM |
62 | int flags; |
63 | u32 counter; | |
7ba127ab TM |
64 | spinlock_t lock; /* Protects the list */ |
65 | struct list_head list; /* Defines sequence of RPC calls */ | |
66 | struct rpc_wait_queue wait; /* RPC call delay queue */ | |
cee54fc9 TM |
67 | }; |
68 | ||
69 | struct nfs_seqid { | |
cee54fc9 | 70 | struct nfs_seqid_counter *sequence; |
4e51336a | 71 | struct list_head list; |
4601df20 | 72 | struct rpc_task *task; |
cee54fc9 TM |
73 | }; |
74 | ||
75 | static inline void nfs_confirm_seqid(struct nfs_seqid_counter *seqid, int status) | |
76 | { | |
77 | if (seqid_mutating_err(-status)) | |
78 | seqid->flags |= NFS_SEQID_CONFIRMED; | |
79 | } | |
80 | ||
4ce79717 TM |
81 | /* |
82 | * NFS4 state_owners and lock_owners are simply labels for ordered | |
83 | * sequences of RPC calls. Their sole purpose is to provide once-only | |
84 | * semantics by allowing the server to identify replayed requests. | |
4ce79717 TM |
85 | */ |
86 | struct nfs4_state_owner { | |
6f2e64d3 | 87 | struct nfs_server *so_server; |
0aaaf5c4 CL |
88 | struct list_head so_lru; |
89 | unsigned long so_expires; | |
24d292b8 | 90 | struct rb_node so_server_node; |
4ce79717 TM |
91 | |
92 | struct rpc_cred *so_cred; /* Associated cred */ | |
9f958ab8 TM |
93 | |
94 | spinlock_t so_lock; | |
95 | atomic_t so_count; | |
7eff03ae | 96 | unsigned long so_flags; |
4ce79717 | 97 | struct list_head so_states; |
cee54fc9 | 98 | struct nfs_seqid_counter so_seqid; |
c137afab | 99 | seqcount_t so_reclaim_seqcount; |
65b62a29 | 100 | struct mutex so_delegreturn_mutex; |
4ce79717 TM |
101 | }; |
102 | ||
7eff03ae TM |
103 | enum { |
104 | NFS_OWNER_RECLAIM_REBOOT, | |
105 | NFS_OWNER_RECLAIM_NOGRACE | |
106 | }; | |
107 | ||
afe6c27c AB |
108 | #define NFS_LOCK_NEW 0 |
109 | #define NFS_LOCK_RECLAIM 1 | |
110 | #define NFS_LOCK_EXPIRED 2 | |
111 | ||
4ce79717 TM |
112 | /* |
113 | * struct nfs4_state maintains the client-side state for a given | |
114 | * (state_owner,inode) tuple (OPEN) or state_owner (LOCK). | |
115 | * | |
116 | * OPEN: | |
117 | * In order to know when to OPEN_DOWNGRADE or CLOSE the state on the server, | |
118 | * we need to know how many files are open for reading or writing on a | |
119 | * given inode. This information too is stored here. | |
120 | * | |
121 | * LOCK: one nfs4_state (LOCK) to hold the lock stateid nfs4_state(OPEN) | |
122 | */ | |
123 | ||
77041ed9 TM |
124 | struct nfs4_lock_owner { |
125 | unsigned int lo_type; | |
126 | #define NFS4_ANY_LOCK_TYPE (0U) | |
127 | #define NFS4_FLOCK_LOCK_TYPE (1U << 0) | |
128 | #define NFS4_POSIX_LOCK_TYPE (1U << 1) | |
129 | union { | |
130 | fl_owner_t posix_owner; | |
131 | pid_t flock_owner; | |
132 | } lo_u; | |
133 | }; | |
134 | ||
4ce79717 TM |
135 | struct nfs4_lock_state { |
136 | struct list_head ls_locks; /* Other lock stateids */ | |
8d0a8a9d | 137 | struct nfs4_state * ls_state; /* Pointer to open state */ |
795a88c9 | 138 | #define NFS_LOCK_INITIALIZED 0 |
ef1820f9 | 139 | #define NFS_LOCK_LOST 1 |
795a88c9 | 140 | unsigned long ls_flags; |
cee54fc9 | 141 | struct nfs_seqid_counter ls_seqid; |
4ce79717 TM |
142 | nfs4_stateid ls_stateid; |
143 | atomic_t ls_count; | |
77041ed9 | 144 | struct nfs4_lock_owner ls_owner; |
4ce79717 TM |
145 | }; |
146 | ||
147 | /* bits for nfs4_state->flags */ | |
148 | enum { | |
149 | LK_STATE_IN_USE, | |
003707c7 | 150 | NFS_DELEGATED_STATE, /* Current stateid is delegation */ |
92b40e93 | 151 | NFS_OPEN_STATE, /* OPEN stateid is set */ |
003707c7 TM |
152 | NFS_O_RDONLY_STATE, /* OPEN stateid has read-only state */ |
153 | NFS_O_WRONLY_STATE, /* OPEN stateid has write-only state */ | |
154 | NFS_O_RDWR_STATE, /* OPEN stateid has read/write state */ | |
b79a4a1b TM |
155 | NFS_STATE_RECLAIM_REBOOT, /* OPEN stateid server rebooted */ |
156 | NFS_STATE_RECLAIM_NOGRACE, /* OPEN stateid needs to recover state */ | |
8e469ebd | 157 | NFS_STATE_POSIX_LOCKS, /* Posix locks are supported */ |
5d422301 | 158 | NFS_STATE_RECOVERY_FAILED, /* OPEN stateid state recovery failed */ |
4ce79717 TM |
159 | }; |
160 | ||
161 | struct nfs4_state { | |
162 | struct list_head open_states; /* List of states for the same state_owner */ | |
163 | struct list_head inode_states; /* List of states for the same inode */ | |
164 | struct list_head lock_states; /* List of subservient lock stateids */ | |
165 | ||
166 | struct nfs4_state_owner *owner; /* Pointer to the open owner */ | |
167 | struct inode *inode; /* Pointer to the inode */ | |
168 | ||
169 | unsigned long flags; /* Do we hold any locks? */ | |
8d0a8a9d | 170 | spinlock_t state_lock; /* Protects the lock_states list */ |
4ce79717 | 171 | |
8bda4e4c | 172 | seqlock_t seqlock; /* Protects the stateid/open_stateid */ |
003707c7 TM |
173 | nfs4_stateid stateid; /* Current stateid: may be delegation */ |
174 | nfs4_stateid open_stateid; /* OPEN stateid */ | |
4ce79717 | 175 | |
8bda4e4c | 176 | /* The following 3 fields are protected by owner->so_lock */ |
003707c7 TM |
177 | unsigned int n_rdonly; /* Number of read-only references */ |
178 | unsigned int n_wronly; /* Number of write-only references */ | |
179 | unsigned int n_rdwr; /* Number of read/write references */ | |
dc0b027d | 180 | fmode_t state; /* State on the server (R,W, or RW) */ |
4ce79717 TM |
181 | atomic_t count; |
182 | }; | |
183 | ||
184 | ||
185 | struct nfs4_exception { | |
186 | long timeout; | |
187 | int retry; | |
9e33bed5 | 188 | struct nfs4_state *state; |
3114ea7a | 189 | struct inode *inode; |
4ce79717 TM |
190 | }; |
191 | ||
192 | struct nfs4_state_recovery_ops { | |
7eff03ae | 193 | int owner_flag_bit; |
b79a4a1b | 194 | int state_flag_bit; |
4ce79717 TM |
195 | int (*recover_open)(struct nfs4_state_owner *, struct nfs4_state *); |
196 | int (*recover_lock)(struct nfs4_state *, struct file_lock *); | |
591d71cb | 197 | int (*establish_clid)(struct nfs_client *, struct rpc_cred *); |
965e9c23 | 198 | int (*reclaim_complete)(struct nfs_client *, struct rpc_cred *); |
05f4c350 CL |
199 | int (*detect_trunking)(struct nfs_client *, struct nfs_client **, |
200 | struct rpc_cred *); | |
4ce79717 TM |
201 | }; |
202 | ||
29fba38b | 203 | struct nfs4_state_maintenance_ops { |
2f60ea6b | 204 | int (*sched_state_renewal)(struct nfs_client *, struct rpc_cred *, unsigned); |
a7b72103 | 205 | struct rpc_cred * (*get_state_renewal_cred_locked)(struct nfs_client *); |
8e69514f | 206 | int (*renew_lease)(struct nfs_client *, struct rpc_cred *); |
29fba38b BH |
207 | }; |
208 | ||
ec011fe8 | 209 | struct nfs4_mig_recovery_ops { |
b03d735b CL |
210 | int (*get_locations)(struct inode *, struct nfs4_fs_locations *, |
211 | struct page *, struct rpc_cred *); | |
44c99933 | 212 | int (*fsid_present)(struct inode *, struct rpc_cred *); |
ec011fe8 CL |
213 | }; |
214 | ||
f786aa90 | 215 | extern const struct dentry_operations nfs4_dentry_operations; |
73a79706 BS |
216 | |
217 | /* dir.c */ | |
218 | int nfs_atomic_open(struct inode *, struct dentry *, struct file *, | |
219 | unsigned, umode_t, int *); | |
6b3b5496 | 220 | |
1ae811ee | 221 | /* super.c */ |
222 | extern struct file_system_type nfs4_fs_type; | |
223 | ||
72de53ec | 224 | /* nfs4namespace.c */ |
2671bfc3 | 225 | rpc_authflavor_t nfs_find_best_sec(struct nfs4_secinfo_flavors *); |
72de53ec | 226 | struct rpc_clnt *nfs4_create_sec_client(struct rpc_clnt *, struct inode *, struct qstr *); |
281cad46 BS |
227 | struct vfsmount *nfs4_submount(struct nfs_server *, struct dentry *, |
228 | struct nfs_fh *, struct nfs_fattr *); | |
800c06a5 CL |
229 | int nfs4_replace_transport(struct nfs_server *server, |
230 | const struct nfs4_fs_locations *locations); | |
72de53ec | 231 | |
4ce79717 | 232 | /* nfs4proc.c */ |
bb8b27e5 TM |
233 | extern int nfs4_proc_setclientid(struct nfs_client *, u32, unsigned short, struct rpc_cred *, struct nfs4_setclientid_res *); |
234 | extern int nfs4_proc_setclientid_confirm(struct nfs_client *, struct nfs4_setclientid_res *arg, struct rpc_cred *); | |
5e6b1990 | 235 | extern int nfs4_proc_get_rootfh(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *, bool); |
2cf047c9 | 236 | extern int nfs4_proc_bind_conn_to_session(struct nfs_client *, struct rpc_cred *cred); |
4d643d1d | 237 | extern int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred); |
66245539 | 238 | extern int nfs4_destroy_clientid(struct nfs_client *clp); |
591d71cb | 239 | extern int nfs4_init_clientid(struct nfs_client *, struct rpc_cred *); |
4d643d1d | 240 | extern int nfs41_init_clientid(struct nfs_client *, struct rpc_cred *); |
1f7977c1 | 241 | extern int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait); |
55a97593 | 242 | extern int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle); |
f05d147f BS |
243 | extern int nfs4_proc_fs_locations(struct rpc_clnt *, struct inode *, const struct qstr *, |
244 | struct nfs4_fs_locations *, struct page *); | |
b03d735b CL |
245 | extern int nfs4_proc_get_locations(struct inode *, struct nfs4_fs_locations *, |
246 | struct page *page, struct rpc_cred *); | |
44c99933 | 247 | extern int nfs4_proc_fsid_present(struct inode *, struct rpc_cred *); |
f05d147f BS |
248 | extern struct rpc_clnt *nfs4_proc_lookup_mountpoint(struct inode *, struct qstr *, |
249 | struct nfs_fh *, struct nfs_fattr *); | |
72de53ec | 250 | extern int nfs4_proc_secinfo(struct inode *, const struct qstr *, struct nfs4_secinfo_flavors *); |
64c2ce8b | 251 | extern const struct xattr_handler *nfs4_xattr_handlers[]; |
5521abfd | 252 | extern int nfs4_set_rw_stateid(nfs4_stateid *stateid, |
9b206149 TM |
253 | const struct nfs_open_context *ctx, |
254 | const struct nfs_lock_context *l_ctx, | |
255 | fmode_t fmode); | |
4ce79717 | 256 | |
557134a3 | 257 | #if defined(CONFIG_NFS_V4_1) |
035168ab TM |
258 | static inline struct nfs4_session *nfs4_get_session(const struct nfs_server *server) |
259 | { | |
260 | return server->nfs_client->cl_session; | |
261 | } | |
262 | ||
dc70d7b3 AA |
263 | extern int nfs41_setup_sequence(struct nfs4_session *session, |
264 | struct nfs4_sequence_args *args, struct nfs4_sequence_res *res, | |
9d12b216 | 265 | struct rpc_task *task); |
848f5bda TM |
266 | extern int nfs4_proc_create_session(struct nfs_client *, struct rpc_cred *); |
267 | extern int nfs4_proc_destroy_session(struct nfs4_session *, struct rpc_cred *); | |
9430fb6b RL |
268 | extern int nfs4_proc_get_lease_time(struct nfs_client *clp, |
269 | struct nfs_fsinfo *fsinfo); | |
863a3c6c | 270 | extern int nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, |
ef311537 | 271 | bool sync); |
94de8b27 AA |
272 | |
273 | static inline bool | |
274 | is_ds_only_client(struct nfs_client *clp) | |
275 | { | |
276 | return (clp->cl_exchange_flags & EXCHGID4_FLAG_MASK_PNFS) == | |
277 | EXCHGID4_FLAG_USE_PNFS_DS; | |
278 | } | |
d83217c1 AA |
279 | |
280 | static inline bool | |
281 | is_ds_client(struct nfs_client *clp) | |
282 | { | |
283 | return clp->cl_exchange_flags & EXCHGID4_FLAG_USE_PNFS_DS; | |
284 | } | |
ab4c2361 | 285 | |
8c21c62c WAA |
286 | static inline bool |
287 | _nfs4_state_protect(struct nfs_client *clp, unsigned long sp4_mode, | |
288 | struct rpc_clnt **clntp, struct rpc_message *msg) | |
ab4c2361 WAA |
289 | { |
290 | struct rpc_cred *newcred = NULL; | |
291 | rpc_authflavor_t flavor; | |
292 | ||
293 | if (test_bit(sp4_mode, &clp->cl_sp4_flags)) { | |
294 | spin_lock(&clp->cl_lock); | |
295 | if (clp->cl_machine_cred != NULL) | |
ade33ff5 WAA |
296 | /* don't call get_rpccred on the machine cred - |
297 | * a reference will be held for life of clp */ | |
298 | newcred = clp->cl_machine_cred; | |
ab4c2361 | 299 | spin_unlock(&clp->cl_lock); |
ab4c2361 WAA |
300 | msg->rpc_cred = newcred; |
301 | ||
302 | flavor = clp->cl_rpcclient->cl_auth->au_flavor; | |
312cd958 WAA |
303 | WARN_ON_ONCE(flavor != RPC_AUTH_GSS_KRB5I && |
304 | flavor != RPC_AUTH_GSS_KRB5P); | |
ab4c2361 | 305 | *clntp = clp->cl_rpcclient; |
8c21c62c WAA |
306 | |
307 | return true; | |
ab4c2361 | 308 | } |
8c21c62c WAA |
309 | return false; |
310 | } | |
311 | ||
312 | /* | |
313 | * Function responsible for determining if an rpc_message should use the | |
314 | * machine cred under SP4_MACH_CRED and if so switching the credential and | |
315 | * authflavor (using the nfs_client's rpc_clnt which will be krb5i/p). | |
316 | * Should be called before rpc_call_sync/rpc_call_async. | |
317 | */ | |
318 | static inline void | |
319 | nfs4_state_protect(struct nfs_client *clp, unsigned long sp4_mode, | |
320 | struct rpc_clnt **clntp, struct rpc_message *msg) | |
321 | { | |
322 | _nfs4_state_protect(clp, sp4_mode, clntp, msg); | |
323 | } | |
324 | ||
325 | /* | |
326 | * Special wrapper to nfs4_state_protect for write. | |
327 | * If WRITE can use machine cred but COMMIT cannot, make sure all writes | |
328 | * that use machine cred use NFS_FILE_SYNC. | |
329 | */ | |
330 | static inline void | |
331 | nfs4_state_protect_write(struct nfs_client *clp, struct rpc_clnt **clntp, | |
332 | struct rpc_message *msg, struct nfs_write_data *wdata) | |
333 | { | |
334 | if (_nfs4_state_protect(clp, NFS_SP4_MACH_CRED_WRITE, clntp, msg) && | |
335 | !test_bit(NFS_SP4_MACH_CRED_COMMIT, &clp->cl_sp4_flags)) | |
336 | wdata->args.stable = NFS_FILE_SYNC; | |
ab4c2361 | 337 | } |
fbcd4abc | 338 | #else /* CONFIG_NFS_v4_1 */ |
035168ab TM |
339 | static inline struct nfs4_session *nfs4_get_session(const struct nfs_server *server) |
340 | { | |
341 | return NULL; | |
342 | } | |
343 | ||
94de8b27 AA |
344 | static inline bool |
345 | is_ds_only_client(struct nfs_client *clp) | |
d83217c1 AA |
346 | { |
347 | return false; | |
348 | } | |
349 | ||
350 | static inline bool | |
351 | is_ds_client(struct nfs_client *clp) | |
94de8b27 AA |
352 | { |
353 | return false; | |
354 | } | |
ab4c2361 WAA |
355 | |
356 | static inline void | |
357 | nfs4_state_protect(struct nfs_client *clp, unsigned long sp4_flags, | |
358 | struct rpc_clnt **clntp, struct rpc_message *msg) | |
359 | { | |
360 | } | |
8c21c62c WAA |
361 | |
362 | static inline void | |
363 | nfs4_state_protect_write(struct nfs_client *clp, struct rpc_clnt **clntp, | |
364 | struct rpc_message *msg, struct nfs_write_data *wdata) | |
365 | { | |
366 | } | |
557134a3 | 367 | #endif /* CONFIG_NFS_V4_1 */ |
4ce79717 | 368 | |
97dc1359 | 369 | extern const struct nfs4_minor_version_ops *nfs_v4_minor_ops[]; |
29fba38b | 370 | |
1549210f | 371 | extern const u32 nfs4_fattr_bitmap[3]; |
a09df2ca DQ |
372 | extern const u32 nfs4_statfs_bitmap[3]; |
373 | extern const u32 nfs4_pathconf_bitmap[3]; | |
dae100c2 | 374 | extern const u32 nfs4_fsinfo_bitmap[3]; |
a09df2ca | 375 | extern const u32 nfs4_fs_locations_bitmap[3]; |
4ce79717 | 376 | |
abf79bb3 CL |
377 | void nfs40_shutdown_client(struct nfs_client *); |
378 | void nfs41_shutdown_client(struct nfs_client *); | |
379 | int nfs40_init_client(struct nfs_client *); | |
380 | int nfs41_init_client(struct nfs_client *); | |
cdb7eced BS |
381 | void nfs4_free_client(struct nfs_client *); |
382 | ||
6663ee7f BS |
383 | struct nfs_client *nfs4_alloc_client(const struct nfs_client_initdata *); |
384 | ||
4ce79717 | 385 | /* nfs4renewd.c */ |
adfa6f98 | 386 | extern void nfs4_schedule_state_renewal(struct nfs_client *); |
4ce79717 | 387 | extern void nfs4_renewd_prepare_shutdown(struct nfs_server *); |
adfa6f98 | 388 | extern void nfs4_kill_renewd(struct nfs_client *); |
65f27f38 | 389 | extern void nfs4_renew_state(struct work_struct *); |
4ce79717 TM |
390 | |
391 | /* nfs4state.c */ | |
73d8bde5 | 392 | struct rpc_cred *nfs4_get_clid_cred(struct nfs_client *clp); |
fe20d7d5 | 393 | struct rpc_cred *nfs4_get_machine_cred_locked(struct nfs_client *clp); |
6dc9d57a | 394 | struct rpc_cred *nfs4_get_renew_cred_locked(struct nfs_client *clp); |
05f4c350 CL |
395 | int nfs4_discover_server_trunking(struct nfs_client *clp, |
396 | struct nfs_client **); | |
397 | int nfs40_discover_server_trunking(struct nfs_client *clp, | |
398 | struct nfs_client **, struct rpc_cred *); | |
a7b72103 | 399 | #if defined(CONFIG_NFS_V4_1) |
05f4c350 CL |
400 | int nfs41_discover_server_trunking(struct nfs_client *clp, |
401 | struct nfs_client **, struct rpc_cred *); | |
9f594791 | 402 | extern void nfs4_schedule_session_recovery(struct nfs4_session *, int); |
ac074835 | 403 | extern void nfs41_server_notify_target_slotid_update(struct nfs_client *clp); |
c10e4498 | 404 | extern void nfs41_server_notify_highest_slotid_update(struct nfs_client *clp); |
5d63360d | 405 | |
0400a6b0 | 406 | #else |
9f594791 | 407 | static inline void nfs4_schedule_session_recovery(struct nfs4_session *session, int err) |
0400a6b0 TM |
408 | { |
409 | } | |
a7b72103 | 410 | #endif /* CONFIG_NFS_V4_1 */ |
4ce79717 | 411 | |
d1e284d5 | 412 | extern struct nfs4_state_owner *nfs4_get_state_owner(struct nfs_server *, struct rpc_cred *, gfp_t); |
4ce79717 | 413 | extern void nfs4_put_state_owner(struct nfs4_state_owner *); |
0aaaf5c4 | 414 | extern void nfs4_purge_state_owners(struct nfs_server *); |
4ce79717 TM |
415 | extern struct nfs4_state * nfs4_get_open_state(struct inode *, struct nfs4_state_owner *); |
416 | extern void nfs4_put_open_state(struct nfs4_state *); | |
643168c2 AV |
417 | extern void nfs4_close_state(struct nfs4_state *, fmode_t); |
418 | extern void nfs4_close_sync(struct nfs4_state *, fmode_t); | |
dc0b027d | 419 | extern void nfs4_state_set_mode_locked(struct nfs4_state *, fmode_t); |
a1d0b5ee TM |
420 | extern void nfs_inode_find_state_and_recover(struct inode *inode, |
421 | const nfs4_stateid *stateid); | |
0400a6b0 | 422 | extern void nfs4_schedule_lease_recovery(struct nfs_client *); |
33021279 TM |
423 | extern int nfs4_wait_clnt_recover(struct nfs_client *clp); |
424 | extern int nfs4_client_recover_expired_lease(struct nfs_client *clp); | |
b0d3ded1 | 425 | extern void nfs4_schedule_state_manager(struct nfs_client *); |
042b60be | 426 | extern void nfs4_schedule_path_down_recovery(struct nfs_client *clp); |
5d422301 | 427 | extern int nfs4_schedule_stateid_recovery(const struct nfs_server *, struct nfs4_state *); |
c9fdeb28 | 428 | extern int nfs4_schedule_migration_recovery(const struct nfs_server *); |
b7f7a66e | 429 | extern void nfs4_schedule_lease_moved_recovery(struct nfs_client *); |
0629e370 | 430 | extern void nfs41_handle_sequence_flag_errors(struct nfs_client *clp, u32 flags); |
78fe0f41 | 431 | extern void nfs41_handle_server_scope(struct nfs_client *, |
79d4e1f0 | 432 | struct nfs41_server_scope **); |
faf5f49c | 433 | extern void nfs4_put_lock_state(struct nfs4_lock_state *lsp); |
8d0a8a9d | 434 | extern int nfs4_set_lock_state(struct nfs4_state *state, struct file_lock *fl); |
5521abfd | 435 | extern int nfs4_select_rw_stateid(nfs4_stateid *, struct nfs4_state *, |
2a369153 | 436 | fmode_t, const struct nfs_lockowner *); |
4ce79717 | 437 | |
8535b2be | 438 | extern struct nfs_seqid *nfs_alloc_seqid(struct nfs_seqid_counter *counter, gfp_t gfp_mask); |
cee54fc9 TM |
439 | extern int nfs_wait_on_sequence(struct nfs_seqid *seqid, struct rpc_task *task); |
440 | extern void nfs_increment_open_seqid(int status, struct nfs_seqid *seqid); | |
441 | extern void nfs_increment_lock_seqid(int status, struct nfs_seqid *seqid); | |
72211dbe | 442 | extern void nfs_release_seqid(struct nfs_seqid *seqid); |
cee54fc9 TM |
443 | extern void nfs_free_seqid(struct nfs_seqid *seqid); |
444 | ||
5ae67c4f | 445 | extern void nfs4_free_lock_state(struct nfs_server *server, struct nfs4_lock_state *lsp); |
cf470c3e | 446 | |
4ce79717 TM |
447 | extern const nfs4_stateid zero_stateid; |
448 | ||
129d1977 | 449 | /* nfs4super.c */ |
fbdefd64 | 450 | struct nfs_mount_info; |
ab7017a3 | 451 | extern struct nfs_subversion nfs_v4; |
ff9099f2 | 452 | struct dentry *nfs4_try_mount(int, const char *, struct nfs_mount_info *, struct nfs_subversion *); |
fac1e8e4 BS |
453 | extern bool nfs4_disable_idmapping; |
454 | extern unsigned short max_session_slots; | |
455 | extern unsigned short send_implementation_id; | |
f6de7a39 | 456 | extern bool recover_lost_locks; |
89d77c8f | 457 | |
6f2ea7f2 CL |
458 | #define NFS4_CLIENT_ID_UNIQ_LEN (64) |
459 | extern char nfs4_client_id_uniquifier[NFS4_CLIENT_ID_UNIQ_LEN]; | |
460 | ||
466bfe7f BS |
461 | /* nfs4sysctl.c */ |
462 | #ifdef CONFIG_SYSCTL | |
463 | int nfs4_register_sysctl(void); | |
464 | void nfs4_unregister_sysctl(void); | |
465 | #else | |
466 | static inline int nfs4_register_sysctl(void) | |
467 | { | |
468 | return 0; | |
469 | } | |
470 | ||
0add3e85 | 471 | static inline void nfs4_unregister_sysctl(void) |
466bfe7f BS |
472 | { |
473 | } | |
474 | #endif | |
475 | ||
4ce79717 | 476 | /* nfs4xdr.c */ |
4ce79717 TM |
477 | extern struct rpc_procinfo nfs4_procedures[]; |
478 | ||
479 | struct nfs4_mount_data; | |
480 | ||
481 | /* callback_xdr.c */ | |
482 | extern struct svc_version nfs4_callback_version1; | |
07bccc2d | 483 | extern struct svc_version nfs4_callback_version4; |
4ce79717 | 484 | |
f597c537 TM |
485 | static inline void nfs4_stateid_copy(nfs4_stateid *dst, const nfs4_stateid *src) |
486 | { | |
2d2f24ad | 487 | memcpy(dst, src, sizeof(*dst)); |
f597c537 TM |
488 | } |
489 | ||
490 | static inline bool nfs4_stateid_match(const nfs4_stateid *dst, const nfs4_stateid *src) | |
491 | { | |
2d2f24ad | 492 | return memcmp(dst, src, sizeof(*dst)) == 0; |
f597c537 TM |
493 | } |
494 | ||
5d422301 TM |
495 | static inline bool nfs4_valid_open_stateid(const struct nfs4_state *state) |
496 | { | |
497 | return test_bit(NFS_STATE_RECOVERY_FAILED, &state->flags) == 0; | |
498 | } | |
499 | ||
4ce79717 TM |
500 | #else |
501 | ||
643168c2 AV |
502 | #define nfs4_close_state(a, b) do { } while (0) |
503 | #define nfs4_close_sync(a, b) do { } while (0) | |
8c21c62c WAA |
504 | #define nfs4_state_protect(a, b, c, d) do { } while (0) |
505 | #define nfs4_state_protect_write(a, b, c, d) do { } while (0) | |
4ce79717 TM |
506 | |
507 | #endif /* CONFIG_NFS_V4 */ | |
508 | #endif /* __LINUX_FS_NFS_NFS4_FS.H */ |