]>
Commit | Line | Data |
---|---|---|
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, |
4ce79717 TM |
32 | }; |
33 | ||
2f60ea6b TM |
34 | #define NFS4_RENEW_TIMEOUT 0x01 |
35 | #define NFS4_RENEW_DELEGATION_CB 0x02 | |
36 | ||
97dc1359 TM |
37 | struct nfs4_minor_version_ops { |
38 | u32 minor_version; | |
39c6daae | 39 | unsigned init_caps; |
97dc1359 | 40 | |
abf79bb3 CL |
41 | int (*init_client)(struct nfs_client *); |
42 | void (*shutdown_client)(struct nfs_client *); | |
36281caa | 43 | bool (*match_stateid)(const nfs4_stateid *, |
e047a10c | 44 | const nfs4_stateid *); |
fca78d6d BS |
45 | int (*find_root_sec)(struct nfs_server *, struct nfs_fh *, |
46 | struct nfs_fsinfo *); | |
c8b2d0bf TM |
47 | int (*free_lock_state)(struct nfs_server *, |
48 | struct nfs4_lock_state *); | |
9915ea7e | 49 | const struct rpc_call_ops *call_sync_ops; |
c48f4f35 TM |
50 | const struct nfs4_state_recovery_ops *reboot_recovery_ops; |
51 | const struct nfs4_state_recovery_ops *nograce_recovery_ops; | |
52 | const struct nfs4_state_maintenance_ops *state_renewal_ops; | |
97dc1359 TM |
53 | }; |
54 | ||
cee54fc9 TM |
55 | #define NFS_SEQID_CONFIRMED 1 |
56 | struct nfs_seqid_counter { | |
95b72eb0 | 57 | ktime_t create_time; |
48c22eb2 | 58 | int owner_id; |
cee54fc9 TM |
59 | int flags; |
60 | u32 counter; | |
7ba127ab TM |
61 | spinlock_t lock; /* Protects the list */ |
62 | struct list_head list; /* Defines sequence of RPC calls */ | |
63 | struct rpc_wait_queue wait; /* RPC call delay queue */ | |
cee54fc9 TM |
64 | }; |
65 | ||
66 | struct nfs_seqid { | |
cee54fc9 | 67 | struct nfs_seqid_counter *sequence; |
4e51336a | 68 | struct list_head list; |
4601df20 | 69 | struct rpc_task *task; |
cee54fc9 TM |
70 | }; |
71 | ||
72 | static inline void nfs_confirm_seqid(struct nfs_seqid_counter *seqid, int status) | |
73 | { | |
74 | if (seqid_mutating_err(-status)) | |
75 | seqid->flags |= NFS_SEQID_CONFIRMED; | |
76 | } | |
77 | ||
4ce79717 TM |
78 | /* |
79 | * NFS4 state_owners and lock_owners are simply labels for ordered | |
80 | * sequences of RPC calls. Their sole purpose is to provide once-only | |
81 | * semantics by allowing the server to identify replayed requests. | |
4ce79717 TM |
82 | */ |
83 | struct nfs4_state_owner { | |
6f2e64d3 | 84 | struct nfs_server *so_server; |
0aaaf5c4 CL |
85 | struct list_head so_lru; |
86 | unsigned long so_expires; | |
24d292b8 | 87 | struct rb_node so_server_node; |
4ce79717 TM |
88 | |
89 | struct rpc_cred *so_cred; /* Associated cred */ | |
9f958ab8 TM |
90 | |
91 | spinlock_t so_lock; | |
92 | atomic_t so_count; | |
7eff03ae | 93 | unsigned long so_flags; |
4ce79717 | 94 | struct list_head so_states; |
cee54fc9 | 95 | struct nfs_seqid_counter so_seqid; |
c137afab | 96 | seqcount_t so_reclaim_seqcount; |
65b62a29 | 97 | struct mutex so_delegreturn_mutex; |
4ce79717 TM |
98 | }; |
99 | ||
7eff03ae TM |
100 | enum { |
101 | NFS_OWNER_RECLAIM_REBOOT, | |
102 | NFS_OWNER_RECLAIM_NOGRACE | |
103 | }; | |
104 | ||
afe6c27c AB |
105 | #define NFS_LOCK_NEW 0 |
106 | #define NFS_LOCK_RECLAIM 1 | |
107 | #define NFS_LOCK_EXPIRED 2 | |
108 | ||
4ce79717 TM |
109 | /* |
110 | * struct nfs4_state maintains the client-side state for a given | |
111 | * (state_owner,inode) tuple (OPEN) or state_owner (LOCK). | |
112 | * | |
113 | * OPEN: | |
114 | * In order to know when to OPEN_DOWNGRADE or CLOSE the state on the server, | |
115 | * we need to know how many files are open for reading or writing on a | |
116 | * given inode. This information too is stored here. | |
117 | * | |
118 | * LOCK: one nfs4_state (LOCK) to hold the lock stateid nfs4_state(OPEN) | |
119 | */ | |
120 | ||
77041ed9 TM |
121 | struct nfs4_lock_owner { |
122 | unsigned int lo_type; | |
123 | #define NFS4_ANY_LOCK_TYPE (0U) | |
124 | #define NFS4_FLOCK_LOCK_TYPE (1U << 0) | |
125 | #define NFS4_POSIX_LOCK_TYPE (1U << 1) | |
126 | union { | |
127 | fl_owner_t posix_owner; | |
128 | pid_t flock_owner; | |
129 | } lo_u; | |
130 | }; | |
131 | ||
4ce79717 TM |
132 | struct nfs4_lock_state { |
133 | struct list_head ls_locks; /* Other lock stateids */ | |
8d0a8a9d | 134 | struct nfs4_state * ls_state; /* Pointer to open state */ |
795a88c9 | 135 | #define NFS_LOCK_INITIALIZED 0 |
ef1820f9 | 136 | #define NFS_LOCK_LOST 1 |
795a88c9 | 137 | unsigned long ls_flags; |
cee54fc9 | 138 | struct nfs_seqid_counter ls_seqid; |
4ce79717 TM |
139 | nfs4_stateid ls_stateid; |
140 | atomic_t ls_count; | |
77041ed9 | 141 | struct nfs4_lock_owner ls_owner; |
4ce79717 TM |
142 | }; |
143 | ||
144 | /* bits for nfs4_state->flags */ | |
145 | enum { | |
146 | LK_STATE_IN_USE, | |
003707c7 | 147 | NFS_DELEGATED_STATE, /* Current stateid is delegation */ |
92b40e93 | 148 | NFS_OPEN_STATE, /* OPEN stateid is set */ |
003707c7 TM |
149 | NFS_O_RDONLY_STATE, /* OPEN stateid has read-only state */ |
150 | NFS_O_WRONLY_STATE, /* OPEN stateid has write-only state */ | |
151 | NFS_O_RDWR_STATE, /* OPEN stateid has read/write state */ | |
b79a4a1b TM |
152 | NFS_STATE_RECLAIM_REBOOT, /* OPEN stateid server rebooted */ |
153 | NFS_STATE_RECLAIM_NOGRACE, /* OPEN stateid needs to recover state */ | |
8e469ebd | 154 | NFS_STATE_POSIX_LOCKS, /* Posix locks are supported */ |
5d422301 | 155 | NFS_STATE_RECOVERY_FAILED, /* OPEN stateid state recovery failed */ |
4ce79717 TM |
156 | }; |
157 | ||
158 | struct nfs4_state { | |
159 | struct list_head open_states; /* List of states for the same state_owner */ | |
160 | struct list_head inode_states; /* List of states for the same inode */ | |
161 | struct list_head lock_states; /* List of subservient lock stateids */ | |
162 | ||
163 | struct nfs4_state_owner *owner; /* Pointer to the open owner */ | |
164 | struct inode *inode; /* Pointer to the inode */ | |
165 | ||
166 | unsigned long flags; /* Do we hold any locks? */ | |
8d0a8a9d | 167 | spinlock_t state_lock; /* Protects the lock_states list */ |
4ce79717 | 168 | |
8bda4e4c | 169 | seqlock_t seqlock; /* Protects the stateid/open_stateid */ |
003707c7 TM |
170 | nfs4_stateid stateid; /* Current stateid: may be delegation */ |
171 | nfs4_stateid open_stateid; /* OPEN stateid */ | |
4ce79717 | 172 | |
8bda4e4c | 173 | /* The following 3 fields are protected by owner->so_lock */ |
003707c7 TM |
174 | unsigned int n_rdonly; /* Number of read-only references */ |
175 | unsigned int n_wronly; /* Number of write-only references */ | |
176 | unsigned int n_rdwr; /* Number of read/write references */ | |
dc0b027d | 177 | fmode_t state; /* State on the server (R,W, or RW) */ |
4ce79717 TM |
178 | atomic_t count; |
179 | }; | |
180 | ||
181 | ||
182 | struct nfs4_exception { | |
183 | long timeout; | |
184 | int retry; | |
9e33bed5 | 185 | struct nfs4_state *state; |
3114ea7a | 186 | struct inode *inode; |
4ce79717 TM |
187 | }; |
188 | ||
189 | struct nfs4_state_recovery_ops { | |
7eff03ae | 190 | int owner_flag_bit; |
b79a4a1b | 191 | int state_flag_bit; |
4ce79717 TM |
192 | int (*recover_open)(struct nfs4_state_owner *, struct nfs4_state *); |
193 | int (*recover_lock)(struct nfs4_state *, struct file_lock *); | |
591d71cb | 194 | int (*establish_clid)(struct nfs_client *, struct rpc_cred *); |
965e9c23 | 195 | int (*reclaim_complete)(struct nfs_client *, struct rpc_cred *); |
05f4c350 CL |
196 | int (*detect_trunking)(struct nfs_client *, struct nfs_client **, |
197 | struct rpc_cred *); | |
4ce79717 TM |
198 | }; |
199 | ||
29fba38b | 200 | struct nfs4_state_maintenance_ops { |
2f60ea6b | 201 | int (*sched_state_renewal)(struct nfs_client *, struct rpc_cred *, unsigned); |
a7b72103 | 202 | struct rpc_cred * (*get_state_renewal_cred_locked)(struct nfs_client *); |
8e69514f | 203 | int (*renew_lease)(struct nfs_client *, struct rpc_cred *); |
29fba38b BH |
204 | }; |
205 | ||
f786aa90 | 206 | extern const struct dentry_operations nfs4_dentry_operations; |
73a79706 BS |
207 | |
208 | /* dir.c */ | |
209 | int nfs_atomic_open(struct inode *, struct dentry *, struct file *, | |
210 | unsigned, umode_t, int *); | |
6b3b5496 | 211 | |
1ae811ee | 212 | /* super.c */ |
213 | extern struct file_system_type nfs4_fs_type; | |
214 | ||
72de53ec | 215 | /* nfs4namespace.c */ |
2671bfc3 | 216 | rpc_authflavor_t nfs_find_best_sec(struct nfs4_secinfo_flavors *); |
72de53ec | 217 | struct rpc_clnt *nfs4_create_sec_client(struct rpc_clnt *, struct inode *, struct qstr *); |
281cad46 BS |
218 | struct vfsmount *nfs4_submount(struct nfs_server *, struct dentry *, |
219 | struct nfs_fh *, struct nfs_fattr *); | |
72de53ec | 220 | |
4ce79717 | 221 | /* nfs4proc.c */ |
bb8b27e5 TM |
222 | extern int nfs4_proc_setclientid(struct nfs_client *, u32, unsigned short, struct rpc_cred *, struct nfs4_setclientid_res *); |
223 | extern int nfs4_proc_setclientid_confirm(struct nfs_client *, struct nfs4_setclientid_res *arg, struct rpc_cred *); | |
3028eb2b | 224 | extern int nfs4_proc_get_rootfh(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *); |
2cf047c9 | 225 | extern int nfs4_proc_bind_conn_to_session(struct nfs_client *, struct rpc_cred *cred); |
4d643d1d | 226 | extern int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred); |
66245539 | 227 | extern int nfs4_destroy_clientid(struct nfs_client *clp); |
591d71cb | 228 | extern int nfs4_init_clientid(struct nfs_client *, struct rpc_cred *); |
4d643d1d | 229 | extern int nfs41_init_clientid(struct nfs_client *, struct rpc_cred *); |
1f7977c1 | 230 | extern int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait); |
55a97593 | 231 | extern int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle); |
f05d147f BS |
232 | extern int nfs4_proc_fs_locations(struct rpc_clnt *, struct inode *, const struct qstr *, |
233 | struct nfs4_fs_locations *, struct page *); | |
234 | extern struct rpc_clnt *nfs4_proc_lookup_mountpoint(struct inode *, struct qstr *, | |
235 | struct nfs_fh *, struct nfs_fattr *); | |
72de53ec | 236 | extern int nfs4_proc_secinfo(struct inode *, const struct qstr *, struct nfs4_secinfo_flavors *); |
64c2ce8b | 237 | extern const struct xattr_handler *nfs4_xattr_handlers[]; |
5521abfd | 238 | extern int nfs4_set_rw_stateid(nfs4_stateid *stateid, |
9b206149 TM |
239 | const struct nfs_open_context *ctx, |
240 | const struct nfs_lock_context *l_ctx, | |
241 | fmode_t fmode); | |
4ce79717 | 242 | |
557134a3 | 243 | #if defined(CONFIG_NFS_V4_1) |
035168ab TM |
244 | static inline struct nfs4_session *nfs4_get_session(const struct nfs_server *server) |
245 | { | |
246 | return server->nfs_client->cl_session; | |
247 | } | |
248 | ||
dc70d7b3 AA |
249 | extern int nfs41_setup_sequence(struct nfs4_session *session, |
250 | struct nfs4_sequence_args *args, struct nfs4_sequence_res *res, | |
9d12b216 | 251 | struct rpc_task *task); |
848f5bda TM |
252 | extern int nfs4_proc_create_session(struct nfs_client *, struct rpc_cred *); |
253 | extern int nfs4_proc_destroy_session(struct nfs4_session *, struct rpc_cred *); | |
9430fb6b RL |
254 | extern int nfs4_proc_get_lease_time(struct nfs_client *clp, |
255 | struct nfs_fsinfo *fsinfo); | |
863a3c6c | 256 | extern int nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, |
ef311537 | 257 | bool sync); |
94de8b27 AA |
258 | |
259 | static inline bool | |
260 | is_ds_only_client(struct nfs_client *clp) | |
261 | { | |
262 | return (clp->cl_exchange_flags & EXCHGID4_FLAG_MASK_PNFS) == | |
263 | EXCHGID4_FLAG_USE_PNFS_DS; | |
264 | } | |
d83217c1 AA |
265 | |
266 | static inline bool | |
267 | is_ds_client(struct nfs_client *clp) | |
268 | { | |
269 | return clp->cl_exchange_flags & EXCHGID4_FLAG_USE_PNFS_DS; | |
270 | } | |
ab4c2361 | 271 | |
8c21c62c WAA |
272 | static inline bool |
273 | _nfs4_state_protect(struct nfs_client *clp, unsigned long sp4_mode, | |
274 | struct rpc_clnt **clntp, struct rpc_message *msg) | |
ab4c2361 WAA |
275 | { |
276 | struct rpc_cred *newcred = NULL; | |
277 | rpc_authflavor_t flavor; | |
278 | ||
279 | if (test_bit(sp4_mode, &clp->cl_sp4_flags)) { | |
280 | spin_lock(&clp->cl_lock); | |
281 | if (clp->cl_machine_cred != NULL) | |
282 | newcred = get_rpccred(clp->cl_machine_cred); | |
283 | spin_unlock(&clp->cl_lock); | |
284 | if (msg->rpc_cred) | |
285 | put_rpccred(msg->rpc_cred); | |
286 | msg->rpc_cred = newcred; | |
287 | ||
288 | flavor = clp->cl_rpcclient->cl_auth->au_flavor; | |
289 | WARN_ON(flavor != RPC_AUTH_GSS_KRB5I && | |
290 | flavor != RPC_AUTH_GSS_KRB5P); | |
291 | *clntp = clp->cl_rpcclient; | |
8c21c62c WAA |
292 | |
293 | return true; | |
ab4c2361 | 294 | } |
8c21c62c WAA |
295 | return false; |
296 | } | |
297 | ||
298 | /* | |
299 | * Function responsible for determining if an rpc_message should use the | |
300 | * machine cred under SP4_MACH_CRED and if so switching the credential and | |
301 | * authflavor (using the nfs_client's rpc_clnt which will be krb5i/p). | |
302 | * Should be called before rpc_call_sync/rpc_call_async. | |
303 | */ | |
304 | static inline void | |
305 | nfs4_state_protect(struct nfs_client *clp, unsigned long sp4_mode, | |
306 | struct rpc_clnt **clntp, struct rpc_message *msg) | |
307 | { | |
308 | _nfs4_state_protect(clp, sp4_mode, clntp, msg); | |
309 | } | |
310 | ||
311 | /* | |
312 | * Special wrapper to nfs4_state_protect for write. | |
313 | * If WRITE can use machine cred but COMMIT cannot, make sure all writes | |
314 | * that use machine cred use NFS_FILE_SYNC. | |
315 | */ | |
316 | static inline void | |
317 | nfs4_state_protect_write(struct nfs_client *clp, struct rpc_clnt **clntp, | |
318 | struct rpc_message *msg, struct nfs_write_data *wdata) | |
319 | { | |
320 | if (_nfs4_state_protect(clp, NFS_SP4_MACH_CRED_WRITE, clntp, msg) && | |
321 | !test_bit(NFS_SP4_MACH_CRED_COMMIT, &clp->cl_sp4_flags)) | |
322 | wdata->args.stable = NFS_FILE_SYNC; | |
ab4c2361 | 323 | } |
fbcd4abc | 324 | #else /* CONFIG_NFS_v4_1 */ |
035168ab TM |
325 | static inline struct nfs4_session *nfs4_get_session(const struct nfs_server *server) |
326 | { | |
327 | return NULL; | |
328 | } | |
329 | ||
94de8b27 AA |
330 | static inline bool |
331 | is_ds_only_client(struct nfs_client *clp) | |
d83217c1 AA |
332 | { |
333 | return false; | |
334 | } | |
335 | ||
336 | static inline bool | |
337 | is_ds_client(struct nfs_client *clp) | |
94de8b27 AA |
338 | { |
339 | return false; | |
340 | } | |
ab4c2361 WAA |
341 | |
342 | static inline void | |
343 | nfs4_state_protect(struct nfs_client *clp, unsigned long sp4_flags, | |
344 | struct rpc_clnt **clntp, struct rpc_message *msg) | |
345 | { | |
346 | } | |
8c21c62c WAA |
347 | |
348 | static inline void | |
349 | nfs4_state_protect_write(struct nfs_client *clp, struct rpc_clnt **clntp, | |
350 | struct rpc_message *msg, struct nfs_write_data *wdata) | |
351 | { | |
352 | } | |
557134a3 | 353 | #endif /* CONFIG_NFS_V4_1 */ |
4ce79717 | 354 | |
97dc1359 | 355 | extern const struct nfs4_minor_version_ops *nfs_v4_minor_ops[]; |
29fba38b | 356 | |
1549210f | 357 | extern const u32 nfs4_fattr_bitmap[3]; |
a09df2ca DQ |
358 | extern const u32 nfs4_statfs_bitmap[3]; |
359 | extern const u32 nfs4_pathconf_bitmap[3]; | |
dae100c2 | 360 | extern const u32 nfs4_fsinfo_bitmap[3]; |
a09df2ca | 361 | extern const u32 nfs4_fs_locations_bitmap[3]; |
4ce79717 | 362 | |
abf79bb3 CL |
363 | void nfs40_shutdown_client(struct nfs_client *); |
364 | void nfs41_shutdown_client(struct nfs_client *); | |
365 | int nfs40_init_client(struct nfs_client *); | |
366 | int nfs41_init_client(struct nfs_client *); | |
cdb7eced BS |
367 | void nfs4_free_client(struct nfs_client *); |
368 | ||
6663ee7f BS |
369 | struct nfs_client *nfs4_alloc_client(const struct nfs_client_initdata *); |
370 | ||
4ce79717 | 371 | /* nfs4renewd.c */ |
adfa6f98 | 372 | extern void nfs4_schedule_state_renewal(struct nfs_client *); |
4ce79717 | 373 | extern void nfs4_renewd_prepare_shutdown(struct nfs_server *); |
adfa6f98 | 374 | extern void nfs4_kill_renewd(struct nfs_client *); |
65f27f38 | 375 | extern void nfs4_renew_state(struct work_struct *); |
4ce79717 TM |
376 | |
377 | /* nfs4state.c */ | |
73d8bde5 | 378 | struct rpc_cred *nfs4_get_clid_cred(struct nfs_client *clp); |
fe20d7d5 | 379 | struct rpc_cred *nfs4_get_machine_cred_locked(struct nfs_client *clp); |
6dc9d57a | 380 | struct rpc_cred *nfs4_get_renew_cred_locked(struct nfs_client *clp); |
05f4c350 CL |
381 | int nfs4_discover_server_trunking(struct nfs_client *clp, |
382 | struct nfs_client **); | |
383 | int nfs40_discover_server_trunking(struct nfs_client *clp, | |
384 | struct nfs_client **, struct rpc_cred *); | |
a7b72103 | 385 | #if defined(CONFIG_NFS_V4_1) |
05f4c350 CL |
386 | int nfs41_discover_server_trunking(struct nfs_client *clp, |
387 | struct nfs_client **, struct rpc_cred *); | |
9f594791 | 388 | extern void nfs4_schedule_session_recovery(struct nfs4_session *, int); |
ac074835 | 389 | extern void nfs41_server_notify_target_slotid_update(struct nfs_client *clp); |
c10e4498 | 390 | extern void nfs41_server_notify_highest_slotid_update(struct nfs_client *clp); |
5d63360d | 391 | |
0400a6b0 | 392 | #else |
9f594791 | 393 | static inline void nfs4_schedule_session_recovery(struct nfs4_session *session, int err) |
0400a6b0 TM |
394 | { |
395 | } | |
a7b72103 | 396 | #endif /* CONFIG_NFS_V4_1 */ |
4ce79717 | 397 | |
d1e284d5 | 398 | extern struct nfs4_state_owner *nfs4_get_state_owner(struct nfs_server *, struct rpc_cred *, gfp_t); |
4ce79717 | 399 | extern void nfs4_put_state_owner(struct nfs4_state_owner *); |
0aaaf5c4 | 400 | extern void nfs4_purge_state_owners(struct nfs_server *); |
4ce79717 TM |
401 | extern struct nfs4_state * nfs4_get_open_state(struct inode *, struct nfs4_state_owner *); |
402 | extern void nfs4_put_open_state(struct nfs4_state *); | |
643168c2 AV |
403 | extern void nfs4_close_state(struct nfs4_state *, fmode_t); |
404 | extern void nfs4_close_sync(struct nfs4_state *, fmode_t); | |
dc0b027d | 405 | extern void nfs4_state_set_mode_locked(struct nfs4_state *, fmode_t); |
a1d0b5ee TM |
406 | extern void nfs_inode_find_state_and_recover(struct inode *inode, |
407 | const nfs4_stateid *stateid); | |
0400a6b0 | 408 | extern void nfs4_schedule_lease_recovery(struct nfs_client *); |
33021279 TM |
409 | extern int nfs4_wait_clnt_recover(struct nfs_client *clp); |
410 | extern int nfs4_client_recover_expired_lease(struct nfs_client *clp); | |
b0d3ded1 | 411 | extern void nfs4_schedule_state_manager(struct nfs_client *); |
042b60be | 412 | extern void nfs4_schedule_path_down_recovery(struct nfs_client *clp); |
5d422301 | 413 | extern int nfs4_schedule_stateid_recovery(const struct nfs_server *, struct nfs4_state *); |
0629e370 | 414 | extern void nfs41_handle_sequence_flag_errors(struct nfs_client *clp, u32 flags); |
78fe0f41 | 415 | extern void nfs41_handle_server_scope(struct nfs_client *, |
79d4e1f0 | 416 | struct nfs41_server_scope **); |
faf5f49c | 417 | extern void nfs4_put_lock_state(struct nfs4_lock_state *lsp); |
8d0a8a9d | 418 | extern int nfs4_set_lock_state(struct nfs4_state *state, struct file_lock *fl); |
5521abfd | 419 | extern int nfs4_select_rw_stateid(nfs4_stateid *, struct nfs4_state *, |
2a369153 | 420 | fmode_t, const struct nfs_lockowner *); |
4ce79717 | 421 | |
8535b2be | 422 | extern struct nfs_seqid *nfs_alloc_seqid(struct nfs_seqid_counter *counter, gfp_t gfp_mask); |
cee54fc9 TM |
423 | extern int nfs_wait_on_sequence(struct nfs_seqid *seqid, struct rpc_task *task); |
424 | extern void nfs_increment_open_seqid(int status, struct nfs_seqid *seqid); | |
425 | extern void nfs_increment_lock_seqid(int status, struct nfs_seqid *seqid); | |
72211dbe | 426 | extern void nfs_release_seqid(struct nfs_seqid *seqid); |
cee54fc9 TM |
427 | extern void nfs_free_seqid(struct nfs_seqid *seqid); |
428 | ||
5ae67c4f | 429 | extern void nfs4_free_lock_state(struct nfs_server *server, struct nfs4_lock_state *lsp); |
cf470c3e | 430 | |
4ce79717 TM |
431 | extern const nfs4_stateid zero_stateid; |
432 | ||
129d1977 | 433 | /* nfs4super.c */ |
fbdefd64 | 434 | struct nfs_mount_info; |
ab7017a3 | 435 | extern struct nfs_subversion nfs_v4; |
ff9099f2 | 436 | struct dentry *nfs4_try_mount(int, const char *, struct nfs_mount_info *, struct nfs_subversion *); |
fac1e8e4 BS |
437 | extern bool nfs4_disable_idmapping; |
438 | extern unsigned short max_session_slots; | |
439 | extern unsigned short send_implementation_id; | |
f6de7a39 | 440 | extern bool recover_lost_locks; |
89d77c8f | 441 | |
6f2ea7f2 CL |
442 | #define NFS4_CLIENT_ID_UNIQ_LEN (64) |
443 | extern char nfs4_client_id_uniquifier[NFS4_CLIENT_ID_UNIQ_LEN]; | |
444 | ||
466bfe7f BS |
445 | /* nfs4sysctl.c */ |
446 | #ifdef CONFIG_SYSCTL | |
447 | int nfs4_register_sysctl(void); | |
448 | void nfs4_unregister_sysctl(void); | |
449 | #else | |
450 | static inline int nfs4_register_sysctl(void) | |
451 | { | |
452 | return 0; | |
453 | } | |
454 | ||
0add3e85 | 455 | static inline void nfs4_unregister_sysctl(void) |
466bfe7f BS |
456 | { |
457 | } | |
458 | #endif | |
459 | ||
4ce79717 | 460 | /* nfs4xdr.c */ |
4ce79717 TM |
461 | extern struct rpc_procinfo nfs4_procedures[]; |
462 | ||
463 | struct nfs4_mount_data; | |
464 | ||
465 | /* callback_xdr.c */ | |
466 | extern struct svc_version nfs4_callback_version1; | |
07bccc2d | 467 | extern struct svc_version nfs4_callback_version4; |
4ce79717 | 468 | |
f597c537 TM |
469 | static inline void nfs4_stateid_copy(nfs4_stateid *dst, const nfs4_stateid *src) |
470 | { | |
2d2f24ad | 471 | memcpy(dst, src, sizeof(*dst)); |
f597c537 TM |
472 | } |
473 | ||
474 | static inline bool nfs4_stateid_match(const nfs4_stateid *dst, const nfs4_stateid *src) | |
475 | { | |
2d2f24ad | 476 | return memcmp(dst, src, sizeof(*dst)) == 0; |
f597c537 TM |
477 | } |
478 | ||
5d422301 TM |
479 | static inline bool nfs4_valid_open_stateid(const struct nfs4_state *state) |
480 | { | |
481 | return test_bit(NFS_STATE_RECOVERY_FAILED, &state->flags) == 0; | |
482 | } | |
483 | ||
4ce79717 TM |
484 | #else |
485 | ||
643168c2 AV |
486 | #define nfs4_close_state(a, b) do { } while (0) |
487 | #define nfs4_close_sync(a, b) do { } while (0) | |
8c21c62c WAA |
488 | #define nfs4_state_protect(a, b, c, d) do { } while (0) |
489 | #define nfs4_state_protect_write(a, b, c, d) do { } while (0) | |
4ce79717 TM |
490 | |
491 | #endif /* CONFIG_NFS_V4 */ | |
492 | #endif /* __LINUX_FS_NFS_NFS4_FS.H */ |