Commit | Line | Data |
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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 | ||
63f5f796 | 47 | struct nfs_seqid_counter; |
97dc1359 TM |
48 | struct nfs4_minor_version_ops { |
49 | u32 minor_version; | |
39c6daae | 50 | unsigned init_caps; |
97dc1359 | 51 | |
abf79bb3 CL |
52 | int (*init_client)(struct nfs_client *); |
53 | void (*shutdown_client)(struct nfs_client *); | |
36281caa | 54 | bool (*match_stateid)(const nfs4_stateid *, |
e047a10c | 55 | const nfs4_stateid *); |
fca78d6d BS |
56 | int (*find_root_sec)(struct nfs_server *, struct nfs_fh *, |
57 | struct nfs_fsinfo *); | |
f1cdae87 | 58 | void (*free_lock_state)(struct nfs_server *, |
c8b2d0bf | 59 | struct nfs4_lock_state *); |
63f5f796 TM |
60 | struct nfs_seqid * |
61 | (*alloc_seqid)(struct nfs_seqid_counter *, gfp_t); | |
9915ea7e | 62 | const struct rpc_call_ops *call_sync_ops; |
c48f4f35 TM |
63 | const struct nfs4_state_recovery_ops *reboot_recovery_ops; |
64 | const struct nfs4_state_recovery_ops *nograce_recovery_ops; | |
65 | const struct nfs4_state_maintenance_ops *state_renewal_ops; | |
ec011fe8 | 66 | const struct nfs4_mig_recovery_ops *mig_recovery_ops; |
97dc1359 TM |
67 | }; |
68 | ||
cee54fc9 TM |
69 | #define NFS_SEQID_CONFIRMED 1 |
70 | struct nfs_seqid_counter { | |
95b72eb0 | 71 | ktime_t create_time; |
48c22eb2 | 72 | int owner_id; |
cee54fc9 TM |
73 | int flags; |
74 | u32 counter; | |
7ba127ab TM |
75 | spinlock_t lock; /* Protects the list */ |
76 | struct list_head list; /* Defines sequence of RPC calls */ | |
77 | struct rpc_wait_queue wait; /* RPC call delay queue */ | |
cee54fc9 TM |
78 | }; |
79 | ||
80 | struct nfs_seqid { | |
cee54fc9 | 81 | struct nfs_seqid_counter *sequence; |
4e51336a | 82 | struct list_head list; |
4601df20 | 83 | struct rpc_task *task; |
cee54fc9 TM |
84 | }; |
85 | ||
86 | static inline void nfs_confirm_seqid(struct nfs_seqid_counter *seqid, int status) | |
87 | { | |
88 | if (seqid_mutating_err(-status)) | |
89 | seqid->flags |= NFS_SEQID_CONFIRMED; | |
90 | } | |
91 | ||
4ce79717 TM |
92 | /* |
93 | * NFS4 state_owners and lock_owners are simply labels for ordered | |
94 | * sequences of RPC calls. Their sole purpose is to provide once-only | |
95 | * semantics by allowing the server to identify replayed requests. | |
4ce79717 TM |
96 | */ |
97 | struct nfs4_state_owner { | |
6f2e64d3 | 98 | struct nfs_server *so_server; |
0aaaf5c4 CL |
99 | struct list_head so_lru; |
100 | unsigned long so_expires; | |
24d292b8 | 101 | struct rb_node so_server_node; |
4ce79717 TM |
102 | |
103 | struct rpc_cred *so_cred; /* Associated cred */ | |
9f958ab8 TM |
104 | |
105 | spinlock_t so_lock; | |
106 | atomic_t so_count; | |
7eff03ae | 107 | unsigned long so_flags; |
4ce79717 | 108 | struct list_head so_states; |
cee54fc9 | 109 | struct nfs_seqid_counter so_seqid; |
c137afab | 110 | seqcount_t so_reclaim_seqcount; |
65b62a29 | 111 | struct mutex so_delegreturn_mutex; |
4ce79717 TM |
112 | }; |
113 | ||
7eff03ae TM |
114 | enum { |
115 | NFS_OWNER_RECLAIM_REBOOT, | |
116 | NFS_OWNER_RECLAIM_NOGRACE | |
117 | }; | |
118 | ||
afe6c27c AB |
119 | #define NFS_LOCK_NEW 0 |
120 | #define NFS_LOCK_RECLAIM 1 | |
121 | #define NFS_LOCK_EXPIRED 2 | |
122 | ||
4ce79717 TM |
123 | /* |
124 | * struct nfs4_state maintains the client-side state for a given | |
125 | * (state_owner,inode) tuple (OPEN) or state_owner (LOCK). | |
126 | * | |
127 | * OPEN: | |
128 | * In order to know when to OPEN_DOWNGRADE or CLOSE the state on the server, | |
129 | * we need to know how many files are open for reading or writing on a | |
130 | * given inode. This information too is stored here. | |
131 | * | |
132 | * LOCK: one nfs4_state (LOCK) to hold the lock stateid nfs4_state(OPEN) | |
133 | */ | |
134 | ||
135 | struct nfs4_lock_state { | |
0c0e0d3c JL |
136 | struct list_head ls_locks; /* Other lock stateids */ |
137 | struct nfs4_state * ls_state; /* Pointer to open state */ | |
795a88c9 | 138 | #define NFS_LOCK_INITIALIZED 0 |
ef1820f9 | 139 | #define NFS_LOCK_LOST 1 |
0c0e0d3c | 140 | unsigned long ls_flags; |
cee54fc9 | 141 | struct nfs_seqid_counter ls_seqid; |
0c0e0d3c JL |
142 | nfs4_stateid ls_stateid; |
143 | atomic_t ls_count; | |
144 | fl_owner_t 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 { | |
9e33bed5 | 186 | struct nfs4_state *state; |
3114ea7a | 187 | struct inode *inode; |
8487c479 | 188 | nfs4_stateid *stateid; |
b3c2aa07 TM |
189 | long timeout; |
190 | unsigned char delay : 1, | |
191 | recovering : 1, | |
192 | retry : 1; | |
4ce79717 TM |
193 | }; |
194 | ||
195 | struct nfs4_state_recovery_ops { | |
7eff03ae | 196 | int owner_flag_bit; |
b79a4a1b | 197 | int state_flag_bit; |
4ce79717 TM |
198 | int (*recover_open)(struct nfs4_state_owner *, struct nfs4_state *); |
199 | int (*recover_lock)(struct nfs4_state *, struct file_lock *); | |
591d71cb | 200 | int (*establish_clid)(struct nfs_client *, struct rpc_cred *); |
965e9c23 | 201 | int (*reclaim_complete)(struct nfs_client *, struct rpc_cred *); |
05f4c350 CL |
202 | int (*detect_trunking)(struct nfs_client *, struct nfs_client **, |
203 | struct rpc_cred *); | |
4ce79717 TM |
204 | }; |
205 | ||
29fba38b | 206 | struct nfs4_state_maintenance_ops { |
2f60ea6b | 207 | int (*sched_state_renewal)(struct nfs_client *, struct rpc_cred *, unsigned); |
a7b72103 | 208 | struct rpc_cred * (*get_state_renewal_cred_locked)(struct nfs_client *); |
8e69514f | 209 | int (*renew_lease)(struct nfs_client *, struct rpc_cred *); |
29fba38b BH |
210 | }; |
211 | ||
ec011fe8 | 212 | struct nfs4_mig_recovery_ops { |
b03d735b CL |
213 | int (*get_locations)(struct inode *, struct nfs4_fs_locations *, |
214 | struct page *, struct rpc_cred *); | |
44c99933 | 215 | int (*fsid_present)(struct inode *, struct rpc_cred *); |
ec011fe8 CL |
216 | }; |
217 | ||
f786aa90 | 218 | extern const struct dentry_operations nfs4_dentry_operations; |
73a79706 BS |
219 | |
220 | /* dir.c */ | |
221 | int nfs_atomic_open(struct inode *, struct dentry *, struct file *, | |
222 | unsigned, umode_t, int *); | |
6b3b5496 | 223 | |
1ae811ee | 224 | /* super.c */ |
225 | extern struct file_system_type nfs4_fs_type; | |
226 | ||
72de53ec | 227 | /* nfs4namespace.c */ |
66b06860 | 228 | struct rpc_clnt *nfs4_negotiate_security(struct rpc_clnt *, struct inode *, struct qstr *); |
281cad46 BS |
229 | struct vfsmount *nfs4_submount(struct nfs_server *, struct dentry *, |
230 | struct nfs_fh *, struct nfs_fattr *); | |
800c06a5 CL |
231 | int nfs4_replace_transport(struct nfs_server *server, |
232 | const struct nfs4_fs_locations *locations); | |
72de53ec | 233 | |
4ce79717 | 234 | /* nfs4proc.c */ |
f4ac1674 | 235 | extern int nfs4_handle_exception(struct nfs_server *, int, struct nfs4_exception *); |
1c6dcbe5 AS |
236 | extern int nfs4_call_sync(struct rpc_clnt *, struct nfs_server *, |
237 | struct rpc_message *, struct nfs4_sequence_args *, | |
238 | struct nfs4_sequence_res *, int); | |
be3a5d23 | 239 | extern void nfs4_init_sequence(struct nfs4_sequence_args *, struct nfs4_sequence_res *, int); |
bb8b27e5 TM |
240 | extern int nfs4_proc_setclientid(struct nfs_client *, u32, unsigned short, struct rpc_cred *, struct nfs4_setclientid_res *); |
241 | extern int nfs4_proc_setclientid_confirm(struct nfs_client *, struct nfs4_setclientid_res *arg, struct rpc_cred *); | |
5e6b1990 | 242 | extern int nfs4_proc_get_rootfh(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *, bool); |
2cf047c9 | 243 | extern int nfs4_proc_bind_conn_to_session(struct nfs_client *, struct rpc_cred *cred); |
4d643d1d | 244 | extern int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred); |
66245539 | 245 | extern int nfs4_destroy_clientid(struct nfs_client *clp); |
591d71cb | 246 | extern int nfs4_init_clientid(struct nfs_client *, struct rpc_cred *); |
4d643d1d | 247 | extern int nfs41_init_clientid(struct nfs_client *, struct rpc_cred *); |
1f7977c1 | 248 | extern int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait); |
55a97593 | 249 | extern int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle); |
f05d147f BS |
250 | extern int nfs4_proc_fs_locations(struct rpc_clnt *, struct inode *, const struct qstr *, |
251 | struct nfs4_fs_locations *, struct page *); | |
b03d735b CL |
252 | extern int nfs4_proc_get_locations(struct inode *, struct nfs4_fs_locations *, |
253 | struct page *page, struct rpc_cred *); | |
44c99933 | 254 | extern int nfs4_proc_fsid_present(struct inode *, struct rpc_cred *); |
f05d147f BS |
255 | extern struct rpc_clnt *nfs4_proc_lookup_mountpoint(struct inode *, struct qstr *, |
256 | struct nfs_fh *, struct nfs_fattr *); | |
72de53ec | 257 | extern int nfs4_proc_secinfo(struct inode *, const struct qstr *, struct nfs4_secinfo_flavors *); |
64c2ce8b | 258 | extern const struct xattr_handler *nfs4_xattr_handlers[]; |
5521abfd | 259 | extern int nfs4_set_rw_stateid(nfs4_stateid *stateid, |
9b206149 TM |
260 | const struct nfs_open_context *ctx, |
261 | const struct nfs_lock_context *l_ctx, | |
262 | fmode_t fmode); | |
4ce79717 | 263 | |
557134a3 | 264 | #if defined(CONFIG_NFS_V4_1) |
035168ab TM |
265 | static inline struct nfs4_session *nfs4_get_session(const struct nfs_server *server) |
266 | { | |
267 | return server->nfs_client->cl_session; | |
268 | } | |
269 | ||
dc70d7b3 AA |
270 | extern int nfs41_setup_sequence(struct nfs4_session *session, |
271 | struct nfs4_sequence_args *args, struct nfs4_sequence_res *res, | |
9d12b216 | 272 | struct rpc_task *task); |
f9c96fcc | 273 | extern int nfs41_sequence_done(struct rpc_task *, struct nfs4_sequence_res *); |
848f5bda TM |
274 | extern int nfs4_proc_create_session(struct nfs_client *, struct rpc_cred *); |
275 | extern int nfs4_proc_destroy_session(struct nfs4_session *, struct rpc_cred *); | |
9430fb6b RL |
276 | extern int nfs4_proc_get_lease_time(struct nfs_client *clp, |
277 | struct nfs_fsinfo *fsinfo); | |
863a3c6c | 278 | extern int nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, |
ef311537 | 279 | bool sync); |
94de8b27 AA |
280 | |
281 | static inline bool | |
282 | is_ds_only_client(struct nfs_client *clp) | |
283 | { | |
284 | return (clp->cl_exchange_flags & EXCHGID4_FLAG_MASK_PNFS) == | |
285 | EXCHGID4_FLAG_USE_PNFS_DS; | |
286 | } | |
d83217c1 AA |
287 | |
288 | static inline bool | |
289 | is_ds_client(struct nfs_client *clp) | |
290 | { | |
291 | return clp->cl_exchange_flags & EXCHGID4_FLAG_USE_PNFS_DS; | |
292 | } | |
ab4c2361 | 293 | |
8c21c62c WAA |
294 | static inline bool |
295 | _nfs4_state_protect(struct nfs_client *clp, unsigned long sp4_mode, | |
296 | struct rpc_clnt **clntp, struct rpc_message *msg) | |
ab4c2361 WAA |
297 | { |
298 | struct rpc_cred *newcred = NULL; | |
299 | rpc_authflavor_t flavor; | |
300 | ||
301 | if (test_bit(sp4_mode, &clp->cl_sp4_flags)) { | |
302 | spin_lock(&clp->cl_lock); | |
303 | if (clp->cl_machine_cred != NULL) | |
ade33ff5 WAA |
304 | /* don't call get_rpccred on the machine cred - |
305 | * a reference will be held for life of clp */ | |
306 | newcred = clp->cl_machine_cred; | |
ab4c2361 | 307 | spin_unlock(&clp->cl_lock); |
ab4c2361 WAA |
308 | msg->rpc_cred = newcred; |
309 | ||
310 | flavor = clp->cl_rpcclient->cl_auth->au_flavor; | |
312cd958 WAA |
311 | WARN_ON_ONCE(flavor != RPC_AUTH_GSS_KRB5I && |
312 | flavor != RPC_AUTH_GSS_KRB5P); | |
ab4c2361 | 313 | *clntp = clp->cl_rpcclient; |
8c21c62c WAA |
314 | |
315 | return true; | |
ab4c2361 | 316 | } |
8c21c62c WAA |
317 | return false; |
318 | } | |
319 | ||
320 | /* | |
321 | * Function responsible for determining if an rpc_message should use the | |
322 | * machine cred under SP4_MACH_CRED and if so switching the credential and | |
323 | * authflavor (using the nfs_client's rpc_clnt which will be krb5i/p). | |
324 | * Should be called before rpc_call_sync/rpc_call_async. | |
325 | */ | |
326 | static inline void | |
327 | nfs4_state_protect(struct nfs_client *clp, unsigned long sp4_mode, | |
328 | struct rpc_clnt **clntp, struct rpc_message *msg) | |
329 | { | |
330 | _nfs4_state_protect(clp, sp4_mode, clntp, msg); | |
331 | } | |
332 | ||
333 | /* | |
334 | * Special wrapper to nfs4_state_protect for write. | |
335 | * If WRITE can use machine cred but COMMIT cannot, make sure all writes | |
336 | * that use machine cred use NFS_FILE_SYNC. | |
337 | */ | |
338 | static inline void | |
339 | nfs4_state_protect_write(struct nfs_client *clp, struct rpc_clnt **clntp, | |
d45f60c6 | 340 | struct rpc_message *msg, struct nfs_pgio_header *hdr) |
8c21c62c WAA |
341 | { |
342 | if (_nfs4_state_protect(clp, NFS_SP4_MACH_CRED_WRITE, clntp, msg) && | |
343 | !test_bit(NFS_SP4_MACH_CRED_COMMIT, &clp->cl_sp4_flags)) | |
d45f60c6 | 344 | hdr->args.stable = NFS_FILE_SYNC; |
ab4c2361 | 345 | } |
fbcd4abc | 346 | #else /* CONFIG_NFS_v4_1 */ |
035168ab TM |
347 | static inline struct nfs4_session *nfs4_get_session(const struct nfs_server *server) |
348 | { | |
349 | return NULL; | |
350 | } | |
351 | ||
94de8b27 AA |
352 | static inline bool |
353 | is_ds_only_client(struct nfs_client *clp) | |
d83217c1 AA |
354 | { |
355 | return false; | |
356 | } | |
357 | ||
358 | static inline bool | |
359 | is_ds_client(struct nfs_client *clp) | |
94de8b27 AA |
360 | { |
361 | return false; | |
362 | } | |
ab4c2361 WAA |
363 | |
364 | static inline void | |
365 | nfs4_state_protect(struct nfs_client *clp, unsigned long sp4_flags, | |
366 | struct rpc_clnt **clntp, struct rpc_message *msg) | |
367 | { | |
368 | } | |
8c21c62c WAA |
369 | |
370 | static inline void | |
371 | nfs4_state_protect_write(struct nfs_client *clp, struct rpc_clnt **clntp, | |
d45f60c6 | 372 | struct rpc_message *msg, struct nfs_pgio_header *hdr) |
8c21c62c WAA |
373 | { |
374 | } | |
557134a3 | 375 | #endif /* CONFIG_NFS_V4_1 */ |
4ce79717 | 376 | |
97dc1359 | 377 | extern const struct nfs4_minor_version_ops *nfs_v4_minor_ops[]; |
29fba38b | 378 | |
1549210f | 379 | extern const u32 nfs4_fattr_bitmap[3]; |
a09df2ca DQ |
380 | extern const u32 nfs4_statfs_bitmap[3]; |
381 | extern const u32 nfs4_pathconf_bitmap[3]; | |
dae100c2 | 382 | extern const u32 nfs4_fsinfo_bitmap[3]; |
a09df2ca | 383 | extern const u32 nfs4_fs_locations_bitmap[3]; |
4ce79717 | 384 | |
abf79bb3 CL |
385 | void nfs40_shutdown_client(struct nfs_client *); |
386 | void nfs41_shutdown_client(struct nfs_client *); | |
387 | int nfs40_init_client(struct nfs_client *); | |
388 | int nfs41_init_client(struct nfs_client *); | |
cdb7eced BS |
389 | void nfs4_free_client(struct nfs_client *); |
390 | ||
6663ee7f BS |
391 | struct nfs_client *nfs4_alloc_client(const struct nfs_client_initdata *); |
392 | ||
4ce79717 | 393 | /* nfs4renewd.c */ |
adfa6f98 | 394 | extern void nfs4_schedule_state_renewal(struct nfs_client *); |
4ce79717 | 395 | extern void nfs4_renewd_prepare_shutdown(struct nfs_server *); |
adfa6f98 | 396 | extern void nfs4_kill_renewd(struct nfs_client *); |
65f27f38 | 397 | extern void nfs4_renew_state(struct work_struct *); |
4ce79717 TM |
398 | |
399 | /* nfs4state.c */ | |
73d8bde5 | 400 | struct rpc_cred *nfs4_get_clid_cred(struct nfs_client *clp); |
fe20d7d5 | 401 | struct rpc_cred *nfs4_get_machine_cred_locked(struct nfs_client *clp); |
6dc9d57a | 402 | struct rpc_cred *nfs4_get_renew_cred_locked(struct nfs_client *clp); |
05f4c350 CL |
403 | int nfs4_discover_server_trunking(struct nfs_client *clp, |
404 | struct nfs_client **); | |
405 | int nfs40_discover_server_trunking(struct nfs_client *clp, | |
406 | struct nfs_client **, struct rpc_cred *); | |
a7b72103 | 407 | #if defined(CONFIG_NFS_V4_1) |
05f4c350 CL |
408 | int nfs41_discover_server_trunking(struct nfs_client *clp, |
409 | struct nfs_client **, struct rpc_cred *); | |
9f594791 | 410 | extern void nfs4_schedule_session_recovery(struct nfs4_session *, int); |
3f10a6af | 411 | extern void nfs41_notify_server(struct nfs_client *); |
0400a6b0 | 412 | #else |
9f594791 | 413 | static inline void nfs4_schedule_session_recovery(struct nfs4_session *session, int err) |
0400a6b0 TM |
414 | { |
415 | } | |
a7b72103 | 416 | #endif /* CONFIG_NFS_V4_1 */ |
4ce79717 | 417 | |
d1e284d5 | 418 | extern struct nfs4_state_owner *nfs4_get_state_owner(struct nfs_server *, struct rpc_cred *, gfp_t); |
4ce79717 | 419 | extern void nfs4_put_state_owner(struct nfs4_state_owner *); |
0aaaf5c4 | 420 | extern void nfs4_purge_state_owners(struct nfs_server *); |
4ce79717 TM |
421 | extern struct nfs4_state * nfs4_get_open_state(struct inode *, struct nfs4_state_owner *); |
422 | extern void nfs4_put_open_state(struct nfs4_state *); | |
643168c2 AV |
423 | extern void nfs4_close_state(struct nfs4_state *, fmode_t); |
424 | extern void nfs4_close_sync(struct nfs4_state *, fmode_t); | |
dc0b027d | 425 | extern void nfs4_state_set_mode_locked(struct nfs4_state *, fmode_t); |
a1d0b5ee TM |
426 | extern void nfs_inode_find_state_and_recover(struct inode *inode, |
427 | const nfs4_stateid *stateid); | |
4f14c194 | 428 | extern int nfs4_state_mark_reclaim_nograce(struct nfs_client *, struct nfs4_state *); |
0400a6b0 | 429 | extern void nfs4_schedule_lease_recovery(struct nfs_client *); |
33021279 TM |
430 | extern int nfs4_wait_clnt_recover(struct nfs_client *clp); |
431 | extern int nfs4_client_recover_expired_lease(struct nfs_client *clp); | |
b0d3ded1 | 432 | extern void nfs4_schedule_state_manager(struct nfs_client *); |
042b60be | 433 | extern void nfs4_schedule_path_down_recovery(struct nfs_client *clp); |
5d422301 | 434 | extern int nfs4_schedule_stateid_recovery(const struct nfs_server *, struct nfs4_state *); |
c9fdeb28 | 435 | extern int nfs4_schedule_migration_recovery(const struct nfs_server *); |
b7f7a66e | 436 | extern void nfs4_schedule_lease_moved_recovery(struct nfs_client *); |
0629e370 | 437 | extern void nfs41_handle_sequence_flag_errors(struct nfs_client *clp, u32 flags); |
78fe0f41 | 438 | extern void nfs41_handle_server_scope(struct nfs_client *, |
79d4e1f0 | 439 | struct nfs41_server_scope **); |
faf5f49c | 440 | extern void nfs4_put_lock_state(struct nfs4_lock_state *lsp); |
8d0a8a9d | 441 | extern int nfs4_set_lock_state(struct nfs4_state *state, struct file_lock *fl); |
abf4e13c TM |
442 | extern int nfs4_select_rw_stateid(struct nfs4_state *, fmode_t, |
443 | const struct nfs_lockowner *, nfs4_stateid *, | |
444 | struct rpc_cred **); | |
4ce79717 | 445 | |
8535b2be | 446 | extern struct nfs_seqid *nfs_alloc_seqid(struct nfs_seqid_counter *counter, gfp_t gfp_mask); |
cee54fc9 TM |
447 | extern int nfs_wait_on_sequence(struct nfs_seqid *seqid, struct rpc_task *task); |
448 | extern void nfs_increment_open_seqid(int status, struct nfs_seqid *seqid); | |
449 | extern void nfs_increment_lock_seqid(int status, struct nfs_seqid *seqid); | |
72211dbe | 450 | extern void nfs_release_seqid(struct nfs_seqid *seqid); |
cee54fc9 | 451 | extern void nfs_free_seqid(struct nfs_seqid *seqid); |
cb04ad2a PT |
452 | extern int nfs40_setup_sequence(struct nfs4_slot_table *tbl, |
453 | struct nfs4_sequence_args *args, | |
454 | struct nfs4_sequence_res *res, | |
455 | struct rpc_task *task); | |
2c4b131d PT |
456 | extern int nfs4_sequence_done(struct rpc_task *task, |
457 | struct nfs4_sequence_res *res); | |
cee54fc9 | 458 | |
5ae67c4f | 459 | extern void nfs4_free_lock_state(struct nfs_server *server, struct nfs4_lock_state *lsp); |
cf470c3e | 460 | |
4ce79717 TM |
461 | extern const nfs4_stateid zero_stateid; |
462 | ||
129d1977 | 463 | /* nfs4super.c */ |
fbdefd64 | 464 | struct nfs_mount_info; |
ab7017a3 | 465 | extern struct nfs_subversion nfs_v4; |
ff9099f2 | 466 | struct dentry *nfs4_try_mount(int, const char *, struct nfs_mount_info *, struct nfs_subversion *); |
fac1e8e4 BS |
467 | extern bool nfs4_disable_idmapping; |
468 | extern unsigned short max_session_slots; | |
469 | extern unsigned short send_implementation_id; | |
f6de7a39 | 470 | extern bool recover_lost_locks; |
89d77c8f | 471 | |
6f2ea7f2 CL |
472 | #define NFS4_CLIENT_ID_UNIQ_LEN (64) |
473 | extern char nfs4_client_id_uniquifier[NFS4_CLIENT_ID_UNIQ_LEN]; | |
474 | ||
466bfe7f BS |
475 | /* nfs4sysctl.c */ |
476 | #ifdef CONFIG_SYSCTL | |
477 | int nfs4_register_sysctl(void); | |
478 | void nfs4_unregister_sysctl(void); | |
479 | #else | |
480 | static inline int nfs4_register_sysctl(void) | |
481 | { | |
482 | return 0; | |
483 | } | |
484 | ||
0add3e85 | 485 | static inline void nfs4_unregister_sysctl(void) |
466bfe7f BS |
486 | { |
487 | } | |
488 | #endif | |
489 | ||
4ce79717 | 490 | /* nfs4xdr.c */ |
4ce79717 TM |
491 | extern struct rpc_procinfo nfs4_procedures[]; |
492 | ||
493 | struct nfs4_mount_data; | |
494 | ||
495 | /* callback_xdr.c */ | |
496 | extern struct svc_version nfs4_callback_version1; | |
07bccc2d | 497 | extern struct svc_version nfs4_callback_version4; |
4ce79717 | 498 | |
f597c537 TM |
499 | static inline void nfs4_stateid_copy(nfs4_stateid *dst, const nfs4_stateid *src) |
500 | { | |
93b717fd TM |
501 | memcpy(dst->data, src->data, sizeof(dst->data)); |
502 | dst->type = src->type; | |
f597c537 TM |
503 | } |
504 | ||
505 | static inline bool nfs4_stateid_match(const nfs4_stateid *dst, const nfs4_stateid *src) | |
506 | { | |
93b717fd TM |
507 | if (dst->type != src->type) |
508 | return false; | |
509 | return memcmp(dst->data, src->data, sizeof(dst->data)) == 0; | |
f597c537 TM |
510 | } |
511 | ||
e999e80e TM |
512 | static inline bool nfs4_stateid_match_other(const nfs4_stateid *dst, const nfs4_stateid *src) |
513 | { | |
514 | return memcmp(dst->other, src->other, NFS4_STATEID_OTHER_SIZE) == 0; | |
515 | } | |
516 | ||
517 | static inline bool nfs4_stateid_is_newer(const nfs4_stateid *s1, const nfs4_stateid *s2) | |
518 | { | |
519 | return (s32)(be32_to_cpu(s1->seqid) - be32_to_cpu(s2->seqid)) > 0; | |
520 | } | |
521 | ||
5d422301 TM |
522 | static inline bool nfs4_valid_open_stateid(const struct nfs4_state *state) |
523 | { | |
524 | return test_bit(NFS_STATE_RECOVERY_FAILED, &state->flags) == 0; | |
525 | } | |
526 | ||
4ce79717 TM |
527 | #else |
528 | ||
643168c2 AV |
529 | #define nfs4_close_state(a, b) do { } while (0) |
530 | #define nfs4_close_sync(a, b) do { } while (0) | |
8c21c62c WAA |
531 | #define nfs4_state_protect(a, b, c, d) do { } while (0) |
532 | #define nfs4_state_protect_write(a, b, c, d) do { } while (0) | |
4ce79717 TM |
533 | |
534 | #endif /* CONFIG_NFS_V4 */ | |
535 | #endif /* __LINUX_FS_NFS_NFS4_FS.H */ |