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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 | ||
694e096f AS |
12 | #if defined(CONFIG_NFS_V4_2) |
13 | #define NFS4_MAX_MINOR_VERSION 2 | |
14 | #elif defined(CONFIG_NFS_V4_1) | |
15 | #define NFS4_MAX_MINOR_VERSION 1 | |
16 | #else | |
17 | #define NFS4_MAX_MINOR_VERSION 0 | |
18 | #endif | |
19 | ||
89d77c8f | 20 | #if IS_ENABLED(CONFIG_NFS_V4) |
4ce79717 | 21 | |
33021279 TM |
22 | #define NFS4_MAX_LOOP_ON_RECOVER (10) |
23 | ||
c137afab TM |
24 | #include <linux/seqlock.h> |
25 | ||
4ce79717 TM |
26 | struct idmap; |
27 | ||
4ce79717 | 28 | enum nfs4_client_state { |
e005e804 | 29 | NFS4CLNT_MANAGER_RUNNING = 0, |
e598d843 | 30 | NFS4CLNT_CHECK_LEASE, |
58d9714a | 31 | NFS4CLNT_LEASE_EXPIRED, |
b79a4a1b TM |
32 | NFS4CLNT_RECLAIM_REBOOT, |
33 | NFS4CLNT_RECLAIM_NOGRACE, | |
707fb4b3 | 34 | NFS4CLNT_DELEGRETURN, |
6df08189 | 35 | NFS4CLNT_SESSION_RESET, |
fd954ae1 | 36 | NFS4CLNT_LEASE_CONFIRM, |
78fe0f41 | 37 | NFS4CLNT_SERVER_SCOPE_MISMATCH, |
2c820d9a | 38 | NFS4CLNT_PURGE_STATE, |
a9e64442 | 39 | NFS4CLNT_BIND_CONN_TO_SESSION, |
c9fdeb28 | 40 | NFS4CLNT_MOVED, |
b7f7a66e | 41 | NFS4CLNT_LEASE_MOVED, |
4ce79717 TM |
42 | }; |
43 | ||
2f60ea6b TM |
44 | #define NFS4_RENEW_TIMEOUT 0x01 |
45 | #define NFS4_RENEW_DELEGATION_CB 0x02 | |
46 | ||
97dc1359 TM |
47 | struct nfs4_minor_version_ops { |
48 | u32 minor_version; | |
39c6daae | 49 | unsigned init_caps; |
97dc1359 | 50 | |
abf79bb3 CL |
51 | int (*init_client)(struct nfs_client *); |
52 | void (*shutdown_client)(struct nfs_client *); | |
36281caa | 53 | bool (*match_stateid)(const nfs4_stateid *, |
e047a10c | 54 | const nfs4_stateid *); |
fca78d6d BS |
55 | int (*find_root_sec)(struct nfs_server *, struct nfs_fh *, |
56 | struct nfs_fsinfo *); | |
f1cdae87 | 57 | void (*free_lock_state)(struct nfs_server *, |
c8b2d0bf | 58 | struct nfs4_lock_state *); |
9915ea7e | 59 | const struct rpc_call_ops *call_sync_ops; |
c48f4f35 TM |
60 | const struct nfs4_state_recovery_ops *reboot_recovery_ops; |
61 | const struct nfs4_state_recovery_ops *nograce_recovery_ops; | |
62 | const struct nfs4_state_maintenance_ops *state_renewal_ops; | |
ec011fe8 | 63 | const struct nfs4_mig_recovery_ops *mig_recovery_ops; |
97dc1359 TM |
64 | }; |
65 | ||
cee54fc9 TM |
66 | #define NFS_SEQID_CONFIRMED 1 |
67 | struct nfs_seqid_counter { | |
95b72eb0 | 68 | ktime_t create_time; |
48c22eb2 | 69 | int owner_id; |
cee54fc9 TM |
70 | int flags; |
71 | u32 counter; | |
7ba127ab TM |
72 | spinlock_t lock; /* Protects the list */ |
73 | struct list_head list; /* Defines sequence of RPC calls */ | |
74 | struct rpc_wait_queue wait; /* RPC call delay queue */ | |
cee54fc9 TM |
75 | }; |
76 | ||
77 | struct nfs_seqid { | |
cee54fc9 | 78 | struct nfs_seqid_counter *sequence; |
4e51336a | 79 | struct list_head list; |
4601df20 | 80 | struct rpc_task *task; |
cee54fc9 TM |
81 | }; |
82 | ||
83 | static inline void nfs_confirm_seqid(struct nfs_seqid_counter *seqid, int status) | |
84 | { | |
85 | if (seqid_mutating_err(-status)) | |
86 | seqid->flags |= NFS_SEQID_CONFIRMED; | |
87 | } | |
88 | ||
4ce79717 TM |
89 | /* |
90 | * NFS4 state_owners and lock_owners are simply labels for ordered | |
91 | * sequences of RPC calls. Their sole purpose is to provide once-only | |
92 | * semantics by allowing the server to identify replayed requests. | |
4ce79717 TM |
93 | */ |
94 | struct nfs4_state_owner { | |
6f2e64d3 | 95 | struct nfs_server *so_server; |
0aaaf5c4 CL |
96 | struct list_head so_lru; |
97 | unsigned long so_expires; | |
24d292b8 | 98 | struct rb_node so_server_node; |
4ce79717 TM |
99 | |
100 | struct rpc_cred *so_cred; /* Associated cred */ | |
9f958ab8 TM |
101 | |
102 | spinlock_t so_lock; | |
103 | atomic_t so_count; | |
7eff03ae | 104 | unsigned long so_flags; |
4ce79717 | 105 | struct list_head so_states; |
cee54fc9 | 106 | struct nfs_seqid_counter so_seqid; |
c137afab | 107 | seqcount_t so_reclaim_seqcount; |
65b62a29 | 108 | struct mutex so_delegreturn_mutex; |
4ce79717 TM |
109 | }; |
110 | ||
7eff03ae TM |
111 | enum { |
112 | NFS_OWNER_RECLAIM_REBOOT, | |
113 | NFS_OWNER_RECLAIM_NOGRACE | |
114 | }; | |
115 | ||
afe6c27c AB |
116 | #define NFS_LOCK_NEW 0 |
117 | #define NFS_LOCK_RECLAIM 1 | |
118 | #define NFS_LOCK_EXPIRED 2 | |
119 | ||
4ce79717 TM |
120 | /* |
121 | * struct nfs4_state maintains the client-side state for a given | |
122 | * (state_owner,inode) tuple (OPEN) or state_owner (LOCK). | |
123 | * | |
124 | * OPEN: | |
125 | * In order to know when to OPEN_DOWNGRADE or CLOSE the state on the server, | |
126 | * we need to know how many files are open for reading or writing on a | |
127 | * given inode. This information too is stored here. | |
128 | * | |
129 | * LOCK: one nfs4_state (LOCK) to hold the lock stateid nfs4_state(OPEN) | |
130 | */ | |
131 | ||
132 | struct nfs4_lock_state { | |
49a4bda2 JL |
133 | struct list_head ls_locks; /* Other lock stateids */ |
134 | struct nfs4_state * ls_state; /* Pointer to open state */ | |
795a88c9 | 135 | #define NFS_LOCK_INITIALIZED 0 |
ef1820f9 | 136 | #define NFS_LOCK_LOST 1 |
49a4bda2 | 137 | unsigned long ls_flags; |
cee54fc9 | 138 | struct nfs_seqid_counter ls_seqid; |
49a4bda2 JL |
139 | nfs4_stateid ls_stateid; |
140 | atomic_t ls_count; | |
141 | fl_owner_t ls_owner; | |
142 | struct work_struct ls_release; | |
4ce79717 TM |
143 | }; |
144 | ||
145 | /* bits for nfs4_state->flags */ | |
146 | enum { | |
147 | LK_STATE_IN_USE, | |
003707c7 | 148 | NFS_DELEGATED_STATE, /* Current stateid is delegation */ |
92b40e93 | 149 | NFS_OPEN_STATE, /* OPEN stateid is set */ |
003707c7 TM |
150 | NFS_O_RDONLY_STATE, /* OPEN stateid has read-only state */ |
151 | NFS_O_WRONLY_STATE, /* OPEN stateid has write-only state */ | |
152 | NFS_O_RDWR_STATE, /* OPEN stateid has read/write state */ | |
b79a4a1b TM |
153 | NFS_STATE_RECLAIM_REBOOT, /* OPEN stateid server rebooted */ |
154 | NFS_STATE_RECLAIM_NOGRACE, /* OPEN stateid needs to recover state */ | |
8e469ebd | 155 | NFS_STATE_POSIX_LOCKS, /* Posix locks are supported */ |
5d422301 | 156 | NFS_STATE_RECOVERY_FAILED, /* OPEN stateid state recovery failed */ |
4ce79717 TM |
157 | }; |
158 | ||
159 | struct nfs4_state { | |
160 | struct list_head open_states; /* List of states for the same state_owner */ | |
161 | struct list_head inode_states; /* List of states for the same inode */ | |
162 | struct list_head lock_states; /* List of subservient lock stateids */ | |
163 | ||
164 | struct nfs4_state_owner *owner; /* Pointer to the open owner */ | |
165 | struct inode *inode; /* Pointer to the inode */ | |
166 | ||
167 | unsigned long flags; /* Do we hold any locks? */ | |
8d0a8a9d | 168 | spinlock_t state_lock; /* Protects the lock_states list */ |
4ce79717 | 169 | |
8bda4e4c | 170 | seqlock_t seqlock; /* Protects the stateid/open_stateid */ |
003707c7 TM |
171 | nfs4_stateid stateid; /* Current stateid: may be delegation */ |
172 | nfs4_stateid open_stateid; /* OPEN stateid */ | |
4ce79717 | 173 | |
8bda4e4c | 174 | /* The following 3 fields are protected by owner->so_lock */ |
003707c7 TM |
175 | unsigned int n_rdonly; /* Number of read-only references */ |
176 | unsigned int n_wronly; /* Number of write-only references */ | |
177 | unsigned int n_rdwr; /* Number of read/write references */ | |
dc0b027d | 178 | fmode_t state; /* State on the server (R,W, or RW) */ |
4ce79717 TM |
179 | atomic_t count; |
180 | }; | |
181 | ||
182 | ||
183 | struct nfs4_exception { | |
184 | long timeout; | |
185 | int retry; | |
9e33bed5 | 186 | struct nfs4_state *state; |
3114ea7a | 187 | struct inode *inode; |
4ce79717 TM |
188 | }; |
189 | ||
190 | struct nfs4_state_recovery_ops { | |
7eff03ae | 191 | int owner_flag_bit; |
b79a4a1b | 192 | int state_flag_bit; |
4ce79717 TM |
193 | int (*recover_open)(struct nfs4_state_owner *, struct nfs4_state *); |
194 | int (*recover_lock)(struct nfs4_state *, struct file_lock *); | |
591d71cb | 195 | int (*establish_clid)(struct nfs_client *, struct rpc_cred *); |
965e9c23 | 196 | int (*reclaim_complete)(struct nfs_client *, struct rpc_cred *); |
05f4c350 CL |
197 | int (*detect_trunking)(struct nfs_client *, struct nfs_client **, |
198 | struct rpc_cred *); | |
4ce79717 TM |
199 | }; |
200 | ||
29fba38b | 201 | struct nfs4_state_maintenance_ops { |
2f60ea6b | 202 | int (*sched_state_renewal)(struct nfs_client *, struct rpc_cred *, unsigned); |
a7b72103 | 203 | struct rpc_cred * (*get_state_renewal_cred_locked)(struct nfs_client *); |
8e69514f | 204 | int (*renew_lease)(struct nfs_client *, struct rpc_cred *); |
29fba38b BH |
205 | }; |
206 | ||
ec011fe8 | 207 | struct nfs4_mig_recovery_ops { |
b03d735b CL |
208 | int (*get_locations)(struct inode *, struct nfs4_fs_locations *, |
209 | struct page *, struct rpc_cred *); | |
44c99933 | 210 | int (*fsid_present)(struct inode *, struct rpc_cred *); |
ec011fe8 CL |
211 | }; |
212 | ||
f786aa90 | 213 | extern const struct dentry_operations nfs4_dentry_operations; |
73a79706 BS |
214 | |
215 | /* dir.c */ | |
216 | int nfs_atomic_open(struct inode *, struct dentry *, struct file *, | |
217 | unsigned, umode_t, int *); | |
6b3b5496 | 218 | |
1ae811ee | 219 | /* super.c */ |
220 | extern struct file_system_type nfs4_fs_type; | |
221 | ||
72de53ec | 222 | /* nfs4namespace.c */ |
66b06860 | 223 | struct rpc_clnt *nfs4_negotiate_security(struct rpc_clnt *, struct inode *, struct qstr *); |
281cad46 BS |
224 | struct vfsmount *nfs4_submount(struct nfs_server *, struct dentry *, |
225 | struct nfs_fh *, struct nfs_fattr *); | |
800c06a5 CL |
226 | int nfs4_replace_transport(struct nfs_server *server, |
227 | const struct nfs4_fs_locations *locations); | |
72de53ec | 228 | |
4ce79717 | 229 | /* nfs4proc.c */ |
1c6dcbe5 AS |
230 | extern int nfs4_call_sync(struct rpc_clnt *, struct nfs_server *, |
231 | struct rpc_message *, struct nfs4_sequence_args *, | |
232 | struct nfs4_sequence_res *, int); | |
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); |
f9c96fcc | 266 | extern int nfs41_sequence_done(struct rpc_task *, struct nfs4_sequence_res *); |
848f5bda TM |
267 | extern int nfs4_proc_create_session(struct nfs_client *, struct rpc_cred *); |
268 | extern int nfs4_proc_destroy_session(struct nfs4_session *, struct rpc_cred *); | |
9430fb6b RL |
269 | extern int nfs4_proc_get_lease_time(struct nfs_client *clp, |
270 | struct nfs_fsinfo *fsinfo); | |
863a3c6c | 271 | extern int nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, |
ef311537 | 272 | bool sync); |
94de8b27 AA |
273 | |
274 | static inline bool | |
275 | is_ds_only_client(struct nfs_client *clp) | |
276 | { | |
277 | return (clp->cl_exchange_flags & EXCHGID4_FLAG_MASK_PNFS) == | |
278 | EXCHGID4_FLAG_USE_PNFS_DS; | |
279 | } | |
d83217c1 AA |
280 | |
281 | static inline bool | |
282 | is_ds_client(struct nfs_client *clp) | |
283 | { | |
284 | return clp->cl_exchange_flags & EXCHGID4_FLAG_USE_PNFS_DS; | |
285 | } | |
ab4c2361 | 286 | |
8c21c62c WAA |
287 | static inline bool |
288 | _nfs4_state_protect(struct nfs_client *clp, unsigned long sp4_mode, | |
289 | struct rpc_clnt **clntp, struct rpc_message *msg) | |
ab4c2361 WAA |
290 | { |
291 | struct rpc_cred *newcred = NULL; | |
292 | rpc_authflavor_t flavor; | |
293 | ||
294 | if (test_bit(sp4_mode, &clp->cl_sp4_flags)) { | |
295 | spin_lock(&clp->cl_lock); | |
296 | if (clp->cl_machine_cred != NULL) | |
ade33ff5 WAA |
297 | /* don't call get_rpccred on the machine cred - |
298 | * a reference will be held for life of clp */ | |
299 | newcred = clp->cl_machine_cred; | |
ab4c2361 | 300 | spin_unlock(&clp->cl_lock); |
ab4c2361 WAA |
301 | msg->rpc_cred = newcred; |
302 | ||
303 | flavor = clp->cl_rpcclient->cl_auth->au_flavor; | |
312cd958 WAA |
304 | WARN_ON_ONCE(flavor != RPC_AUTH_GSS_KRB5I && |
305 | flavor != RPC_AUTH_GSS_KRB5P); | |
ab4c2361 | 306 | *clntp = clp->cl_rpcclient; |
8c21c62c WAA |
307 | |
308 | return true; | |
ab4c2361 | 309 | } |
8c21c62c WAA |
310 | return false; |
311 | } | |
312 | ||
313 | /* | |
314 | * Function responsible for determining if an rpc_message should use the | |
315 | * machine cred under SP4_MACH_CRED and if so switching the credential and | |
316 | * authflavor (using the nfs_client's rpc_clnt which will be krb5i/p). | |
317 | * Should be called before rpc_call_sync/rpc_call_async. | |
318 | */ | |
319 | static inline void | |
320 | nfs4_state_protect(struct nfs_client *clp, unsigned long sp4_mode, | |
321 | struct rpc_clnt **clntp, struct rpc_message *msg) | |
322 | { | |
323 | _nfs4_state_protect(clp, sp4_mode, clntp, msg); | |
324 | } | |
325 | ||
326 | /* | |
327 | * Special wrapper to nfs4_state_protect for write. | |
328 | * If WRITE can use machine cred but COMMIT cannot, make sure all writes | |
329 | * that use machine cred use NFS_FILE_SYNC. | |
330 | */ | |
331 | static inline void | |
332 | nfs4_state_protect_write(struct nfs_client *clp, struct rpc_clnt **clntp, | |
d45f60c6 | 333 | struct rpc_message *msg, struct nfs_pgio_header *hdr) |
8c21c62c WAA |
334 | { |
335 | if (_nfs4_state_protect(clp, NFS_SP4_MACH_CRED_WRITE, clntp, msg) && | |
336 | !test_bit(NFS_SP4_MACH_CRED_COMMIT, &clp->cl_sp4_flags)) | |
d45f60c6 | 337 | hdr->args.stable = NFS_FILE_SYNC; |
ab4c2361 | 338 | } |
fbcd4abc | 339 | #else /* CONFIG_NFS_v4_1 */ |
035168ab TM |
340 | static inline struct nfs4_session *nfs4_get_session(const struct nfs_server *server) |
341 | { | |
342 | return NULL; | |
343 | } | |
344 | ||
94de8b27 AA |
345 | static inline bool |
346 | is_ds_only_client(struct nfs_client *clp) | |
d83217c1 AA |
347 | { |
348 | return false; | |
349 | } | |
350 | ||
351 | static inline bool | |
352 | is_ds_client(struct nfs_client *clp) | |
94de8b27 AA |
353 | { |
354 | return false; | |
355 | } | |
ab4c2361 WAA |
356 | |
357 | static inline void | |
358 | nfs4_state_protect(struct nfs_client *clp, unsigned long sp4_flags, | |
359 | struct rpc_clnt **clntp, struct rpc_message *msg) | |
360 | { | |
361 | } | |
8c21c62c WAA |
362 | |
363 | static inline void | |
364 | nfs4_state_protect_write(struct nfs_client *clp, struct rpc_clnt **clntp, | |
d45f60c6 | 365 | struct rpc_message *msg, struct nfs_pgio_header *hdr) |
8c21c62c WAA |
366 | { |
367 | } | |
557134a3 | 368 | #endif /* CONFIG_NFS_V4_1 */ |
4ce79717 | 369 | |
97dc1359 | 370 | extern const struct nfs4_minor_version_ops *nfs_v4_minor_ops[]; |
29fba38b | 371 | |
1549210f | 372 | extern const u32 nfs4_fattr_bitmap[3]; |
a09df2ca DQ |
373 | extern const u32 nfs4_statfs_bitmap[3]; |
374 | extern const u32 nfs4_pathconf_bitmap[3]; | |
dae100c2 | 375 | extern const u32 nfs4_fsinfo_bitmap[3]; |
a09df2ca | 376 | extern const u32 nfs4_fs_locations_bitmap[3]; |
4ce79717 | 377 | |
abf79bb3 CL |
378 | void nfs40_shutdown_client(struct nfs_client *); |
379 | void nfs41_shutdown_client(struct nfs_client *); | |
380 | int nfs40_init_client(struct nfs_client *); | |
381 | int nfs41_init_client(struct nfs_client *); | |
cdb7eced BS |
382 | void nfs4_free_client(struct nfs_client *); |
383 | ||
6663ee7f BS |
384 | struct nfs_client *nfs4_alloc_client(const struct nfs_client_initdata *); |
385 | ||
4ce79717 | 386 | /* nfs4renewd.c */ |
adfa6f98 | 387 | extern void nfs4_schedule_state_renewal(struct nfs_client *); |
4ce79717 | 388 | extern void nfs4_renewd_prepare_shutdown(struct nfs_server *); |
adfa6f98 | 389 | extern void nfs4_kill_renewd(struct nfs_client *); |
65f27f38 | 390 | extern void nfs4_renew_state(struct work_struct *); |
4ce79717 TM |
391 | |
392 | /* nfs4state.c */ | |
73d8bde5 | 393 | struct rpc_cred *nfs4_get_clid_cred(struct nfs_client *clp); |
fe20d7d5 | 394 | struct rpc_cred *nfs4_get_machine_cred_locked(struct nfs_client *clp); |
6dc9d57a | 395 | struct rpc_cred *nfs4_get_renew_cred_locked(struct nfs_client *clp); |
05f4c350 CL |
396 | int nfs4_discover_server_trunking(struct nfs_client *clp, |
397 | struct nfs_client **); | |
398 | int nfs40_discover_server_trunking(struct nfs_client *clp, | |
399 | struct nfs_client **, struct rpc_cred *); | |
a7b72103 | 400 | #if defined(CONFIG_NFS_V4_1) |
05f4c350 CL |
401 | int nfs41_discover_server_trunking(struct nfs_client *clp, |
402 | struct nfs_client **, struct rpc_cred *); | |
9f594791 | 403 | extern void nfs4_schedule_session_recovery(struct nfs4_session *, int); |
ac074835 | 404 | extern void nfs41_server_notify_target_slotid_update(struct nfs_client *clp); |
c10e4498 | 405 | extern void nfs41_server_notify_highest_slotid_update(struct nfs_client *clp); |
5d63360d | 406 | |
0400a6b0 | 407 | #else |
9f594791 | 408 | static inline void nfs4_schedule_session_recovery(struct nfs4_session *session, int err) |
0400a6b0 TM |
409 | { |
410 | } | |
a7b72103 | 411 | #endif /* CONFIG_NFS_V4_1 */ |
4ce79717 | 412 | |
d1e284d5 | 413 | extern struct nfs4_state_owner *nfs4_get_state_owner(struct nfs_server *, struct rpc_cred *, gfp_t); |
4ce79717 | 414 | extern void nfs4_put_state_owner(struct nfs4_state_owner *); |
0aaaf5c4 | 415 | extern void nfs4_purge_state_owners(struct nfs_server *); |
4ce79717 TM |
416 | extern struct nfs4_state * nfs4_get_open_state(struct inode *, struct nfs4_state_owner *); |
417 | extern void nfs4_put_open_state(struct nfs4_state *); | |
643168c2 AV |
418 | extern void nfs4_close_state(struct nfs4_state *, fmode_t); |
419 | extern void nfs4_close_sync(struct nfs4_state *, fmode_t); | |
dc0b027d | 420 | extern void nfs4_state_set_mode_locked(struct nfs4_state *, fmode_t); |
a1d0b5ee TM |
421 | extern void nfs_inode_find_state_and_recover(struct inode *inode, |
422 | const nfs4_stateid *stateid); | |
4f14c194 | 423 | extern int nfs4_state_mark_reclaim_nograce(struct nfs_client *, struct nfs4_state *); |
0400a6b0 | 424 | extern void nfs4_schedule_lease_recovery(struct nfs_client *); |
33021279 TM |
425 | extern int nfs4_wait_clnt_recover(struct nfs_client *clp); |
426 | extern int nfs4_client_recover_expired_lease(struct nfs_client *clp); | |
b0d3ded1 | 427 | extern void nfs4_schedule_state_manager(struct nfs_client *); |
042b60be | 428 | extern void nfs4_schedule_path_down_recovery(struct nfs_client *clp); |
5d422301 | 429 | extern int nfs4_schedule_stateid_recovery(const struct nfs_server *, struct nfs4_state *); |
c9fdeb28 | 430 | extern int nfs4_schedule_migration_recovery(const struct nfs_server *); |
b7f7a66e | 431 | extern void nfs4_schedule_lease_moved_recovery(struct nfs_client *); |
0629e370 | 432 | extern void nfs41_handle_sequence_flag_errors(struct nfs_client *clp, u32 flags); |
78fe0f41 | 433 | extern void nfs41_handle_server_scope(struct nfs_client *, |
79d4e1f0 | 434 | struct nfs41_server_scope **); |
faf5f49c | 435 | extern void nfs4_put_lock_state(struct nfs4_lock_state *lsp); |
8d0a8a9d | 436 | extern int nfs4_set_lock_state(struct nfs4_state *state, struct file_lock *fl); |
5521abfd | 437 | extern int nfs4_select_rw_stateid(nfs4_stateid *, struct nfs4_state *, |
2a369153 | 438 | fmode_t, const struct nfs_lockowner *); |
4ce79717 | 439 | |
8535b2be | 440 | extern struct nfs_seqid *nfs_alloc_seqid(struct nfs_seqid_counter *counter, gfp_t gfp_mask); |
cee54fc9 TM |
441 | extern int nfs_wait_on_sequence(struct nfs_seqid *seqid, struct rpc_task *task); |
442 | extern void nfs_increment_open_seqid(int status, struct nfs_seqid *seqid); | |
443 | extern void nfs_increment_lock_seqid(int status, struct nfs_seqid *seqid); | |
72211dbe | 444 | extern void nfs_release_seqid(struct nfs_seqid *seqid); |
cee54fc9 TM |
445 | extern void nfs_free_seqid(struct nfs_seqid *seqid); |
446 | ||
5ae67c4f | 447 | extern void nfs4_free_lock_state(struct nfs_server *server, struct nfs4_lock_state *lsp); |
cf470c3e | 448 | |
4ce79717 TM |
449 | extern const nfs4_stateid zero_stateid; |
450 | ||
129d1977 | 451 | /* nfs4super.c */ |
fbdefd64 | 452 | struct nfs_mount_info; |
ab7017a3 | 453 | extern struct nfs_subversion nfs_v4; |
ff9099f2 | 454 | struct dentry *nfs4_try_mount(int, const char *, struct nfs_mount_info *, struct nfs_subversion *); |
fac1e8e4 BS |
455 | extern bool nfs4_disable_idmapping; |
456 | extern unsigned short max_session_slots; | |
457 | extern unsigned short send_implementation_id; | |
f6de7a39 | 458 | extern bool recover_lost_locks; |
89d77c8f | 459 | |
6f2ea7f2 CL |
460 | #define NFS4_CLIENT_ID_UNIQ_LEN (64) |
461 | extern char nfs4_client_id_uniquifier[NFS4_CLIENT_ID_UNIQ_LEN]; | |
462 | ||
466bfe7f BS |
463 | /* nfs4sysctl.c */ |
464 | #ifdef CONFIG_SYSCTL | |
465 | int nfs4_register_sysctl(void); | |
466 | void nfs4_unregister_sysctl(void); | |
467 | #else | |
468 | static inline int nfs4_register_sysctl(void) | |
469 | { | |
470 | return 0; | |
471 | } | |
472 | ||
0add3e85 | 473 | static inline void nfs4_unregister_sysctl(void) |
466bfe7f BS |
474 | { |
475 | } | |
476 | #endif | |
477 | ||
4ce79717 | 478 | /* nfs4xdr.c */ |
4ce79717 TM |
479 | extern struct rpc_procinfo nfs4_procedures[]; |
480 | ||
481 | struct nfs4_mount_data; | |
482 | ||
483 | /* callback_xdr.c */ | |
484 | extern struct svc_version nfs4_callback_version1; | |
07bccc2d | 485 | extern struct svc_version nfs4_callback_version4; |
4ce79717 | 486 | |
f597c537 TM |
487 | static inline void nfs4_stateid_copy(nfs4_stateid *dst, const nfs4_stateid *src) |
488 | { | |
2d2f24ad | 489 | memcpy(dst, src, sizeof(*dst)); |
f597c537 TM |
490 | } |
491 | ||
492 | static inline bool nfs4_stateid_match(const nfs4_stateid *dst, const nfs4_stateid *src) | |
493 | { | |
2d2f24ad | 494 | return memcmp(dst, src, sizeof(*dst)) == 0; |
f597c537 TM |
495 | } |
496 | ||
e999e80e TM |
497 | static inline bool nfs4_stateid_match_other(const nfs4_stateid *dst, const nfs4_stateid *src) |
498 | { | |
499 | return memcmp(dst->other, src->other, NFS4_STATEID_OTHER_SIZE) == 0; | |
500 | } | |
501 | ||
502 | static inline bool nfs4_stateid_is_newer(const nfs4_stateid *s1, const nfs4_stateid *s2) | |
503 | { | |
504 | return (s32)(be32_to_cpu(s1->seqid) - be32_to_cpu(s2->seqid)) > 0; | |
505 | } | |
506 | ||
5d422301 TM |
507 | static inline bool nfs4_valid_open_stateid(const struct nfs4_state *state) |
508 | { | |
509 | return test_bit(NFS_STATE_RECOVERY_FAILED, &state->flags) == 0; | |
510 | } | |
511 | ||
4ce79717 TM |
512 | #else |
513 | ||
643168c2 AV |
514 | #define nfs4_close_state(a, b) do { } while (0) |
515 | #define nfs4_close_sync(a, b) do { } while (0) | |
8c21c62c WAA |
516 | #define nfs4_state_protect(a, b, c, d) do { } while (0) |
517 | #define nfs4_state_protect_write(a, b, c, d) do { } while (0) | |
4ce79717 TM |
518 | |
519 | #endif /* CONFIG_NFS_V4 */ | |
520 | #endif /* __LINUX_FS_NFS_NFS4_FS.H */ |