Commit | Line | Data |
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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
4ce79717 TM |
2 | /* |
3 | * linux/fs/nfs/nfs4_fs.h | |
4 | * | |
5 | * Copyright (C) 2005 Trond Myklebust | |
6 | * | |
7 | * NFSv4-specific filesystem definitions and declarations | |
8 | */ | |
9 | ||
10 | #ifndef __LINUX_FS_NFS_NFS4_FS_H | |
11 | #define __LINUX_FS_NFS_NFS4_FS_H | |
12 | ||
694e096f AS |
13 | #if defined(CONFIG_NFS_V4_2) |
14 | #define NFS4_MAX_MINOR_VERSION 2 | |
15 | #elif defined(CONFIG_NFS_V4_1) | |
16 | #define NFS4_MAX_MINOR_VERSION 1 | |
17 | #else | |
18 | #define NFS4_MAX_MINOR_VERSION 0 | |
19 | #endif | |
20 | ||
89d77c8f | 21 | #if IS_ENABLED(CONFIG_NFS_V4) |
4ce79717 | 22 | |
33021279 TM |
23 | #define NFS4_MAX_LOOP_ON_RECOVER (10) |
24 | ||
c137afab TM |
25 | #include <linux/seqlock.h> |
26 | ||
4ce79717 TM |
27 | struct idmap; |
28 | ||
4ce79717 | 29 | enum nfs4_client_state { |
e005e804 | 30 | NFS4CLNT_MANAGER_RUNNING = 0, |
e598d843 | 31 | NFS4CLNT_CHECK_LEASE, |
58d9714a | 32 | NFS4CLNT_LEASE_EXPIRED, |
b79a4a1b TM |
33 | NFS4CLNT_RECLAIM_REBOOT, |
34 | NFS4CLNT_RECLAIM_NOGRACE, | |
707fb4b3 | 35 | NFS4CLNT_DELEGRETURN, |
6df08189 | 36 | NFS4CLNT_SESSION_RESET, |
fd954ae1 | 37 | NFS4CLNT_LEASE_CONFIRM, |
78fe0f41 | 38 | NFS4CLNT_SERVER_SCOPE_MISMATCH, |
2c820d9a | 39 | NFS4CLNT_PURGE_STATE, |
a9e64442 | 40 | NFS4CLNT_BIND_CONN_TO_SESSION, |
c9fdeb28 | 41 | NFS4CLNT_MOVED, |
b7f7a66e | 42 | NFS4CLNT_LEASE_MOVED, |
45870d69 | 43 | NFS4CLNT_DELEGATION_EXPIRED, |
4ce79717 TM |
44 | }; |
45 | ||
2f60ea6b TM |
46 | #define NFS4_RENEW_TIMEOUT 0x01 |
47 | #define NFS4_RENEW_DELEGATION_CB 0x02 | |
48 | ||
63f5f796 | 49 | struct nfs_seqid_counter; |
97dc1359 TM |
50 | struct nfs4_minor_version_ops { |
51 | u32 minor_version; | |
39c6daae | 52 | unsigned init_caps; |
97dc1359 | 53 | |
abf79bb3 CL |
54 | int (*init_client)(struct nfs_client *); |
55 | void (*shutdown_client)(struct nfs_client *); | |
36281caa | 56 | bool (*match_stateid)(const nfs4_stateid *, |
e047a10c | 57 | const nfs4_stateid *); |
fca78d6d BS |
58 | int (*find_root_sec)(struct nfs_server *, struct nfs_fh *, |
59 | struct nfs_fsinfo *); | |
f1cdae87 | 60 | void (*free_lock_state)(struct nfs_server *, |
c8b2d0bf | 61 | struct nfs4_lock_state *); |
45870d69 TM |
62 | int (*test_and_free_expired)(struct nfs_server *, |
63 | nfs4_stateid *, struct rpc_cred *); | |
63f5f796 TM |
64 | struct nfs_seqid * |
65 | (*alloc_seqid)(struct nfs_seqid_counter *, gfp_t); | |
04fa2c6b | 66 | int (*session_trunk)(struct rpc_clnt *, struct rpc_xprt *, void *); |
9915ea7e | 67 | const struct rpc_call_ops *call_sync_ops; |
c48f4f35 TM |
68 | const struct nfs4_state_recovery_ops *reboot_recovery_ops; |
69 | const struct nfs4_state_recovery_ops *nograce_recovery_ops; | |
70 | const struct nfs4_state_maintenance_ops *state_renewal_ops; | |
ec011fe8 | 71 | const struct nfs4_mig_recovery_ops *mig_recovery_ops; |
97dc1359 TM |
72 | }; |
73 | ||
cee54fc9 TM |
74 | #define NFS_SEQID_CONFIRMED 1 |
75 | struct nfs_seqid_counter { | |
95b72eb0 | 76 | ktime_t create_time; |
48c22eb2 | 77 | int owner_id; |
cee54fc9 TM |
78 | int flags; |
79 | u32 counter; | |
7ba127ab TM |
80 | spinlock_t lock; /* Protects the list */ |
81 | struct list_head list; /* Defines sequence of RPC calls */ | |
82 | struct rpc_wait_queue wait; /* RPC call delay queue */ | |
cee54fc9 TM |
83 | }; |
84 | ||
85 | struct nfs_seqid { | |
cee54fc9 | 86 | struct nfs_seqid_counter *sequence; |
4e51336a | 87 | struct list_head list; |
4601df20 | 88 | struct rpc_task *task; |
cee54fc9 TM |
89 | }; |
90 | ||
91 | static inline void nfs_confirm_seqid(struct nfs_seqid_counter *seqid, int status) | |
92 | { | |
93 | if (seqid_mutating_err(-status)) | |
94 | seqid->flags |= NFS_SEQID_CONFIRMED; | |
95 | } | |
96 | ||
4ce79717 TM |
97 | /* |
98 | * NFS4 state_owners and lock_owners are simply labels for ordered | |
99 | * sequences of RPC calls. Their sole purpose is to provide once-only | |
100 | * semantics by allowing the server to identify replayed requests. | |
4ce79717 TM |
101 | */ |
102 | struct nfs4_state_owner { | |
6f2e64d3 | 103 | struct nfs_server *so_server; |
0aaaf5c4 CL |
104 | struct list_head so_lru; |
105 | unsigned long so_expires; | |
24d292b8 | 106 | struct rb_node so_server_node; |
4ce79717 TM |
107 | |
108 | struct rpc_cred *so_cred; /* Associated cred */ | |
9f958ab8 TM |
109 | |
110 | spinlock_t so_lock; | |
111 | atomic_t so_count; | |
7eff03ae | 112 | unsigned long so_flags; |
4ce79717 | 113 | struct list_head so_states; |
cee54fc9 | 114 | struct nfs_seqid_counter so_seqid; |
c137afab | 115 | seqcount_t so_reclaim_seqcount; |
65b62a29 | 116 | struct mutex so_delegreturn_mutex; |
4ce79717 TM |
117 | }; |
118 | ||
7eff03ae TM |
119 | enum { |
120 | NFS_OWNER_RECLAIM_REBOOT, | |
121 | NFS_OWNER_RECLAIM_NOGRACE | |
122 | }; | |
123 | ||
afe6c27c AB |
124 | #define NFS_LOCK_NEW 0 |
125 | #define NFS_LOCK_RECLAIM 1 | |
126 | #define NFS_LOCK_EXPIRED 2 | |
127 | ||
4ce79717 TM |
128 | /* |
129 | * struct nfs4_state maintains the client-side state for a given | |
130 | * (state_owner,inode) tuple (OPEN) or state_owner (LOCK). | |
131 | * | |
132 | * OPEN: | |
133 | * In order to know when to OPEN_DOWNGRADE or CLOSE the state on the server, | |
134 | * we need to know how many files are open for reading or writing on a | |
135 | * given inode. This information too is stored here. | |
136 | * | |
137 | * LOCK: one nfs4_state (LOCK) to hold the lock stateid nfs4_state(OPEN) | |
138 | */ | |
139 | ||
140 | struct nfs4_lock_state { | |
0c0e0d3c JL |
141 | struct list_head ls_locks; /* Other lock stateids */ |
142 | struct nfs4_state * ls_state; /* Pointer to open state */ | |
795a88c9 | 143 | #define NFS_LOCK_INITIALIZED 0 |
ef1820f9 | 144 | #define NFS_LOCK_LOST 1 |
0c0e0d3c | 145 | unsigned long ls_flags; |
cee54fc9 | 146 | struct nfs_seqid_counter ls_seqid; |
0c0e0d3c JL |
147 | nfs4_stateid ls_stateid; |
148 | atomic_t ls_count; | |
149 | fl_owner_t ls_owner; | |
4ce79717 TM |
150 | }; |
151 | ||
152 | /* bits for nfs4_state->flags */ | |
153 | enum { | |
154 | LK_STATE_IN_USE, | |
003707c7 | 155 | NFS_DELEGATED_STATE, /* Current stateid is delegation */ |
92b40e93 | 156 | NFS_OPEN_STATE, /* OPEN stateid is set */ |
003707c7 TM |
157 | NFS_O_RDONLY_STATE, /* OPEN stateid has read-only state */ |
158 | NFS_O_WRONLY_STATE, /* OPEN stateid has write-only state */ | |
159 | NFS_O_RDWR_STATE, /* OPEN stateid has read/write state */ | |
b79a4a1b TM |
160 | NFS_STATE_RECLAIM_REBOOT, /* OPEN stateid server rebooted */ |
161 | NFS_STATE_RECLAIM_NOGRACE, /* OPEN stateid needs to recover state */ | |
8e469ebd | 162 | NFS_STATE_POSIX_LOCKS, /* Posix locks are supported */ |
5d422301 | 163 | NFS_STATE_RECOVERY_FAILED, /* OPEN stateid state recovery failed */ |
a8ce377a | 164 | NFS_STATE_MAY_NOTIFY_LOCK, /* server may CB_NOTIFY_LOCK */ |
4ce79717 TM |
165 | }; |
166 | ||
167 | struct nfs4_state { | |
168 | struct list_head open_states; /* List of states for the same state_owner */ | |
169 | struct list_head inode_states; /* List of states for the same inode */ | |
170 | struct list_head lock_states; /* List of subservient lock stateids */ | |
171 | ||
172 | struct nfs4_state_owner *owner; /* Pointer to the open owner */ | |
173 | struct inode *inode; /* Pointer to the inode */ | |
174 | ||
175 | unsigned long flags; /* Do we hold any locks? */ | |
8d0a8a9d | 176 | spinlock_t state_lock; /* Protects the lock_states list */ |
4ce79717 | 177 | |
8bda4e4c | 178 | seqlock_t seqlock; /* Protects the stateid/open_stateid */ |
003707c7 TM |
179 | nfs4_stateid stateid; /* Current stateid: may be delegation */ |
180 | nfs4_stateid open_stateid; /* OPEN stateid */ | |
4ce79717 | 181 | |
8bda4e4c | 182 | /* The following 3 fields are protected by owner->so_lock */ |
003707c7 TM |
183 | unsigned int n_rdonly; /* Number of read-only references */ |
184 | unsigned int n_wronly; /* Number of write-only references */ | |
185 | unsigned int n_rdwr; /* Number of read/write references */ | |
dc0b027d | 186 | fmode_t state; /* State on the server (R,W, or RW) */ |
4ce79717 TM |
187 | atomic_t count; |
188 | }; | |
189 | ||
190 | ||
191 | struct nfs4_exception { | |
9e33bed5 | 192 | struct nfs4_state *state; |
3114ea7a | 193 | struct inode *inode; |
8487c479 | 194 | nfs4_stateid *stateid; |
b3c2aa07 TM |
195 | long timeout; |
196 | unsigned char delay : 1, | |
197 | recovering : 1, | |
198 | retry : 1; | |
4ce79717 TM |
199 | }; |
200 | ||
201 | struct nfs4_state_recovery_ops { | |
7eff03ae | 202 | int owner_flag_bit; |
b79a4a1b | 203 | int state_flag_bit; |
4ce79717 TM |
204 | int (*recover_open)(struct nfs4_state_owner *, struct nfs4_state *); |
205 | int (*recover_lock)(struct nfs4_state *, struct file_lock *); | |
591d71cb | 206 | int (*establish_clid)(struct nfs_client *, struct rpc_cred *); |
965e9c23 | 207 | int (*reclaim_complete)(struct nfs_client *, struct rpc_cred *); |
05f4c350 CL |
208 | int (*detect_trunking)(struct nfs_client *, struct nfs_client **, |
209 | struct rpc_cred *); | |
4ce79717 TM |
210 | }; |
211 | ||
04fa2c6b AA |
212 | struct nfs4_add_xprt_data { |
213 | struct nfs_client *clp; | |
214 | struct rpc_cred *cred; | |
215 | }; | |
216 | ||
29fba38b | 217 | struct nfs4_state_maintenance_ops { |
2f60ea6b | 218 | int (*sched_state_renewal)(struct nfs_client *, struct rpc_cred *, unsigned); |
a7b72103 | 219 | struct rpc_cred * (*get_state_renewal_cred_locked)(struct nfs_client *); |
8e69514f | 220 | int (*renew_lease)(struct nfs_client *, struct rpc_cred *); |
29fba38b BH |
221 | }; |
222 | ||
ec011fe8 | 223 | struct nfs4_mig_recovery_ops { |
b03d735b CL |
224 | int (*get_locations)(struct inode *, struct nfs4_fs_locations *, |
225 | struct page *, struct rpc_cred *); | |
44c99933 | 226 | int (*fsid_present)(struct inode *, struct rpc_cred *); |
ec011fe8 CL |
227 | }; |
228 | ||
f786aa90 | 229 | extern const struct dentry_operations nfs4_dentry_operations; |
73a79706 BS |
230 | |
231 | /* dir.c */ | |
232 | int nfs_atomic_open(struct inode *, struct dentry *, struct file *, | |
233 | unsigned, umode_t, int *); | |
6b3b5496 | 234 | |
1ae811ee | 235 | /* super.c */ |
236 | extern struct file_system_type nfs4_fs_type; | |
237 | ||
72de53ec | 238 | /* nfs4namespace.c */ |
beffb8fe AV |
239 | struct rpc_clnt *nfs4_negotiate_security(struct rpc_clnt *, struct inode *, |
240 | const struct qstr *); | |
281cad46 BS |
241 | struct vfsmount *nfs4_submount(struct nfs_server *, struct dentry *, |
242 | struct nfs_fh *, struct nfs_fattr *); | |
800c06a5 CL |
243 | int nfs4_replace_transport(struct nfs_server *server, |
244 | const struct nfs4_fs_locations *locations); | |
72de53ec | 245 | |
4ce79717 | 246 | /* nfs4proc.c */ |
f4ac1674 | 247 | extern int nfs4_handle_exception(struct nfs_server *, int, struct nfs4_exception *); |
1c6dcbe5 AS |
248 | extern int nfs4_call_sync(struct rpc_clnt *, struct nfs_server *, |
249 | struct rpc_message *, struct nfs4_sequence_args *, | |
250 | struct nfs4_sequence_res *, int); | |
be3a5d23 | 251 | extern void nfs4_init_sequence(struct nfs4_sequence_args *, struct nfs4_sequence_res *, int); |
bb8b27e5 TM |
252 | extern int nfs4_proc_setclientid(struct nfs_client *, u32, unsigned short, struct rpc_cred *, struct nfs4_setclientid_res *); |
253 | extern int nfs4_proc_setclientid_confirm(struct nfs_client *, struct nfs4_setclientid_res *arg, struct rpc_cred *); | |
5e6b1990 | 254 | extern int nfs4_proc_get_rootfh(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *, bool); |
2cf047c9 | 255 | extern int nfs4_proc_bind_conn_to_session(struct nfs_client *, struct rpc_cred *cred); |
4d643d1d | 256 | extern int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred); |
66245539 | 257 | extern int nfs4_destroy_clientid(struct nfs_client *clp); |
591d71cb | 258 | extern int nfs4_init_clientid(struct nfs_client *, struct rpc_cred *); |
4d643d1d | 259 | extern int nfs41_init_clientid(struct nfs_client *, struct rpc_cred *); |
1f7977c1 | 260 | extern int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait); |
55a97593 | 261 | extern int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle); |
f05d147f BS |
262 | extern int nfs4_proc_fs_locations(struct rpc_clnt *, struct inode *, const struct qstr *, |
263 | struct nfs4_fs_locations *, struct page *); | |
b03d735b CL |
264 | extern int nfs4_proc_get_locations(struct inode *, struct nfs4_fs_locations *, |
265 | struct page *page, struct rpc_cred *); | |
44c99933 | 266 | extern int nfs4_proc_fsid_present(struct inode *, struct rpc_cred *); |
beffb8fe | 267 | extern struct rpc_clnt *nfs4_proc_lookup_mountpoint(struct inode *, const struct qstr *, |
f05d147f | 268 | struct nfs_fh *, struct nfs_fattr *); |
72de53ec | 269 | extern int nfs4_proc_secinfo(struct inode *, const struct qstr *, struct nfs4_secinfo_flavors *); |
64c2ce8b | 270 | extern const struct xattr_handler *nfs4_xattr_handlers[]; |
5521abfd | 271 | extern int nfs4_set_rw_stateid(nfs4_stateid *stateid, |
9b206149 TM |
272 | const struct nfs_open_context *ctx, |
273 | const struct nfs_lock_context *l_ctx, | |
274 | fmode_t fmode); | |
4ce79717 | 275 | |
557134a3 | 276 | #if defined(CONFIG_NFS_V4_1) |
f9c96fcc | 277 | extern int nfs41_sequence_done(struct rpc_task *, struct nfs4_sequence_res *); |
848f5bda TM |
278 | extern int nfs4_proc_create_session(struct nfs_client *, struct rpc_cred *); |
279 | extern int nfs4_proc_destroy_session(struct nfs4_session *, struct rpc_cred *); | |
9430fb6b RL |
280 | extern int nfs4_proc_get_lease_time(struct nfs_client *clp, |
281 | struct nfs_fsinfo *fsinfo); | |
863a3c6c | 282 | extern int nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, |
ef311537 | 283 | bool sync); |
ba84db96 AA |
284 | extern int nfs4_detect_session_trunking(struct nfs_client *clp, |
285 | struct nfs41_exchange_id_res *res, struct rpc_xprt *xprt); | |
94de8b27 AA |
286 | |
287 | static inline bool | |
288 | is_ds_only_client(struct nfs_client *clp) | |
289 | { | |
290 | return (clp->cl_exchange_flags & EXCHGID4_FLAG_MASK_PNFS) == | |
291 | EXCHGID4_FLAG_USE_PNFS_DS; | |
292 | } | |
d83217c1 AA |
293 | |
294 | static inline bool | |
295 | is_ds_client(struct nfs_client *clp) | |
296 | { | |
297 | return clp->cl_exchange_flags & EXCHGID4_FLAG_USE_PNFS_DS; | |
298 | } | |
ab4c2361 | 299 | |
8c21c62c WAA |
300 | static inline bool |
301 | _nfs4_state_protect(struct nfs_client *clp, unsigned long sp4_mode, | |
302 | struct rpc_clnt **clntp, struct rpc_message *msg) | |
ab4c2361 WAA |
303 | { |
304 | struct rpc_cred *newcred = NULL; | |
305 | rpc_authflavor_t flavor; | |
306 | ||
b79e87e0 N |
307 | if (sp4_mode == NFS_SP4_MACH_CRED_CLEANUP || |
308 | sp4_mode == NFS_SP4_MACH_CRED_PNFS_CLEANUP) { | |
309 | /* Using machine creds for cleanup operations | |
310 | * is only relevent if the client credentials | |
311 | * might expire. So don't bother for | |
312 | * RPC_AUTH_UNIX. If file was only exported to | |
313 | * sec=sys, the PUTFH would fail anyway. | |
314 | */ | |
315 | if ((*clntp)->cl_auth->au_flavor == RPC_AUTH_UNIX) | |
316 | return false; | |
317 | } | |
ab4c2361 WAA |
318 | if (test_bit(sp4_mode, &clp->cl_sp4_flags)) { |
319 | spin_lock(&clp->cl_lock); | |
320 | if (clp->cl_machine_cred != NULL) | |
ade33ff5 WAA |
321 | /* don't call get_rpccred on the machine cred - |
322 | * a reference will be held for life of clp */ | |
323 | newcred = clp->cl_machine_cred; | |
ab4c2361 | 324 | spin_unlock(&clp->cl_lock); |
ab4c2361 WAA |
325 | msg->rpc_cred = newcred; |
326 | ||
327 | flavor = clp->cl_rpcclient->cl_auth->au_flavor; | |
312cd958 WAA |
328 | WARN_ON_ONCE(flavor != RPC_AUTH_GSS_KRB5I && |
329 | flavor != RPC_AUTH_GSS_KRB5P); | |
ab4c2361 | 330 | *clntp = clp->cl_rpcclient; |
8c21c62c WAA |
331 | |
332 | return true; | |
ab4c2361 | 333 | } |
8c21c62c WAA |
334 | return false; |
335 | } | |
336 | ||
337 | /* | |
338 | * Function responsible for determining if an rpc_message should use the | |
339 | * machine cred under SP4_MACH_CRED and if so switching the credential and | |
340 | * authflavor (using the nfs_client's rpc_clnt which will be krb5i/p). | |
341 | * Should be called before rpc_call_sync/rpc_call_async. | |
342 | */ | |
343 | static inline void | |
344 | nfs4_state_protect(struct nfs_client *clp, unsigned long sp4_mode, | |
345 | struct rpc_clnt **clntp, struct rpc_message *msg) | |
346 | { | |
347 | _nfs4_state_protect(clp, sp4_mode, clntp, msg); | |
348 | } | |
349 | ||
350 | /* | |
351 | * Special wrapper to nfs4_state_protect for write. | |
352 | * If WRITE can use machine cred but COMMIT cannot, make sure all writes | |
353 | * that use machine cred use NFS_FILE_SYNC. | |
354 | */ | |
355 | static inline void | |
356 | nfs4_state_protect_write(struct nfs_client *clp, struct rpc_clnt **clntp, | |
d45f60c6 | 357 | struct rpc_message *msg, struct nfs_pgio_header *hdr) |
8c21c62c WAA |
358 | { |
359 | if (_nfs4_state_protect(clp, NFS_SP4_MACH_CRED_WRITE, clntp, msg) && | |
360 | !test_bit(NFS_SP4_MACH_CRED_COMMIT, &clp->cl_sp4_flags)) | |
d45f60c6 | 361 | hdr->args.stable = NFS_FILE_SYNC; |
ab4c2361 | 362 | } |
fbcd4abc | 363 | #else /* CONFIG_NFS_v4_1 */ |
94de8b27 AA |
364 | static inline bool |
365 | is_ds_only_client(struct nfs_client *clp) | |
d83217c1 AA |
366 | { |
367 | return false; | |
368 | } | |
369 | ||
370 | static inline bool | |
371 | is_ds_client(struct nfs_client *clp) | |
94de8b27 AA |
372 | { |
373 | return false; | |
374 | } | |
ab4c2361 WAA |
375 | |
376 | static inline void | |
377 | nfs4_state_protect(struct nfs_client *clp, unsigned long sp4_flags, | |
378 | struct rpc_clnt **clntp, struct rpc_message *msg) | |
379 | { | |
380 | } | |
8c21c62c WAA |
381 | |
382 | static inline void | |
383 | nfs4_state_protect_write(struct nfs_client *clp, struct rpc_clnt **clntp, | |
d45f60c6 | 384 | struct rpc_message *msg, struct nfs_pgio_header *hdr) |
8c21c62c WAA |
385 | { |
386 | } | |
557134a3 | 387 | #endif /* CONFIG_NFS_V4_1 */ |
4ce79717 | 388 | |
97dc1359 | 389 | extern const struct nfs4_minor_version_ops *nfs_v4_minor_ops[]; |
29fba38b | 390 | |
1549210f | 391 | extern const u32 nfs4_fattr_bitmap[3]; |
a09df2ca DQ |
392 | extern const u32 nfs4_statfs_bitmap[3]; |
393 | extern const u32 nfs4_pathconf_bitmap[3]; | |
dae100c2 | 394 | extern const u32 nfs4_fsinfo_bitmap[3]; |
a09df2ca | 395 | extern const u32 nfs4_fs_locations_bitmap[3]; |
4ce79717 | 396 | |
abf79bb3 CL |
397 | void nfs40_shutdown_client(struct nfs_client *); |
398 | void nfs41_shutdown_client(struct nfs_client *); | |
399 | int nfs40_init_client(struct nfs_client *); | |
400 | int nfs41_init_client(struct nfs_client *); | |
cdb7eced BS |
401 | void nfs4_free_client(struct nfs_client *); |
402 | ||
6663ee7f BS |
403 | struct nfs_client *nfs4_alloc_client(const struct nfs_client_initdata *); |
404 | ||
4ce79717 | 405 | /* nfs4renewd.c */ |
adfa6f98 | 406 | extern void nfs4_schedule_state_renewal(struct nfs_client *); |
4ce79717 | 407 | extern void nfs4_renewd_prepare_shutdown(struct nfs_server *); |
adfa6f98 | 408 | extern void nfs4_kill_renewd(struct nfs_client *); |
65f27f38 | 409 | extern void nfs4_renew_state(struct work_struct *); |
fb10fb67 TM |
410 | extern void nfs4_set_lease_period(struct nfs_client *clp, |
411 | unsigned long lease, | |
412 | unsigned long lastrenewed); | |
413 | ||
4ce79717 TM |
414 | |
415 | /* nfs4state.c */ | |
73d8bde5 | 416 | struct rpc_cred *nfs4_get_clid_cred(struct nfs_client *clp); |
fe20d7d5 | 417 | struct rpc_cred *nfs4_get_machine_cred_locked(struct nfs_client *clp); |
6dc9d57a | 418 | struct rpc_cred *nfs4_get_renew_cred_locked(struct nfs_client *clp); |
05f4c350 CL |
419 | int nfs4_discover_server_trunking(struct nfs_client *clp, |
420 | struct nfs_client **); | |
421 | int nfs40_discover_server_trunking(struct nfs_client *clp, | |
422 | struct nfs_client **, struct rpc_cred *); | |
a7b72103 | 423 | #if defined(CONFIG_NFS_V4_1) |
05f4c350 CL |
424 | int nfs41_discover_server_trunking(struct nfs_client *clp, |
425 | struct nfs_client **, struct rpc_cred *); | |
9f594791 | 426 | extern void nfs4_schedule_session_recovery(struct nfs4_session *, int); |
3f10a6af | 427 | extern void nfs41_notify_server(struct nfs_client *); |
0400a6b0 | 428 | #else |
9f594791 | 429 | static inline void nfs4_schedule_session_recovery(struct nfs4_session *session, int err) |
0400a6b0 TM |
430 | { |
431 | } | |
a7b72103 | 432 | #endif /* CONFIG_NFS_V4_1 */ |
4ce79717 | 433 | |
d1e284d5 | 434 | extern struct nfs4_state_owner *nfs4_get_state_owner(struct nfs_server *, struct rpc_cred *, gfp_t); |
4ce79717 | 435 | extern void nfs4_put_state_owner(struct nfs4_state_owner *); |
0aaaf5c4 | 436 | extern void nfs4_purge_state_owners(struct nfs_server *); |
4ce79717 TM |
437 | extern struct nfs4_state * nfs4_get_open_state(struct inode *, struct nfs4_state_owner *); |
438 | extern void nfs4_put_open_state(struct nfs4_state *); | |
643168c2 AV |
439 | extern void nfs4_close_state(struct nfs4_state *, fmode_t); |
440 | extern void nfs4_close_sync(struct nfs4_state *, fmode_t); | |
dc0b027d | 441 | extern void nfs4_state_set_mode_locked(struct nfs4_state *, fmode_t); |
a1d0b5ee TM |
442 | extern void nfs_inode_find_state_and_recover(struct inode *inode, |
443 | const nfs4_stateid *stateid); | |
4f14c194 | 444 | extern int nfs4_state_mark_reclaim_nograce(struct nfs_client *, struct nfs4_state *); |
0400a6b0 | 445 | extern void nfs4_schedule_lease_recovery(struct nfs_client *); |
33021279 TM |
446 | extern int nfs4_wait_clnt_recover(struct nfs_client *clp); |
447 | extern int nfs4_client_recover_expired_lease(struct nfs_client *clp); | |
b0d3ded1 | 448 | extern void nfs4_schedule_state_manager(struct nfs_client *); |
042b60be | 449 | extern void nfs4_schedule_path_down_recovery(struct nfs_client *clp); |
5d422301 | 450 | extern int nfs4_schedule_stateid_recovery(const struct nfs_server *, struct nfs4_state *); |
c9fdeb28 | 451 | extern int nfs4_schedule_migration_recovery(const struct nfs_server *); |
b7f7a66e | 452 | extern void nfs4_schedule_lease_moved_recovery(struct nfs_client *); |
0a014a44 | 453 | extern void nfs41_handle_sequence_flag_errors(struct nfs_client *clp, u32 flags, bool); |
78fe0f41 | 454 | extern void nfs41_handle_server_scope(struct nfs_client *, |
79d4e1f0 | 455 | struct nfs41_server_scope **); |
faf5f49c | 456 | extern void nfs4_put_lock_state(struct nfs4_lock_state *lsp); |
8d0a8a9d | 457 | extern int nfs4_set_lock_state(struct nfs4_state *state, struct file_lock *fl); |
abf4e13c | 458 | extern int nfs4_select_rw_stateid(struct nfs4_state *, fmode_t, |
17393475 | 459 | const struct nfs_lock_context *, nfs4_stateid *, |
abf4e13c | 460 | struct rpc_cred **); |
4ce79717 | 461 | |
8535b2be | 462 | extern struct nfs_seqid *nfs_alloc_seqid(struct nfs_seqid_counter *counter, gfp_t gfp_mask); |
cee54fc9 TM |
463 | extern int nfs_wait_on_sequence(struct nfs_seqid *seqid, struct rpc_task *task); |
464 | extern void nfs_increment_open_seqid(int status, struct nfs_seqid *seqid); | |
465 | extern void nfs_increment_lock_seqid(int status, struct nfs_seqid *seqid); | |
72211dbe | 466 | extern void nfs_release_seqid(struct nfs_seqid *seqid); |
cee54fc9 | 467 | extern void nfs_free_seqid(struct nfs_seqid *seqid); |
6de7e12f | 468 | extern int nfs4_setup_sequence(const struct nfs_client *client, |
cb04ad2a PT |
469 | struct nfs4_sequence_args *args, |
470 | struct nfs4_sequence_res *res, | |
471 | struct rpc_task *task); | |
2c4b131d PT |
472 | extern int nfs4_sequence_done(struct rpc_task *task, |
473 | struct nfs4_sequence_res *res); | |
cee54fc9 | 474 | |
5ae67c4f | 475 | extern void nfs4_free_lock_state(struct nfs_server *server, struct nfs4_lock_state *lsp); |
cf470c3e | 476 | |
4ce79717 TM |
477 | extern const nfs4_stateid zero_stateid; |
478 | ||
129d1977 | 479 | /* nfs4super.c */ |
fbdefd64 | 480 | struct nfs_mount_info; |
ab7017a3 | 481 | extern struct nfs_subversion nfs_v4; |
ff9099f2 | 482 | struct dentry *nfs4_try_mount(int, const char *, struct nfs_mount_info *, struct nfs_subversion *); |
fac1e8e4 BS |
483 | extern bool nfs4_disable_idmapping; |
484 | extern unsigned short max_session_slots; | |
5405fc44 | 485 | extern unsigned short max_session_cb_slots; |
fac1e8e4 | 486 | extern unsigned short send_implementation_id; |
f6de7a39 | 487 | extern bool recover_lost_locks; |
89d77c8f | 488 | |
6f2ea7f2 CL |
489 | #define NFS4_CLIENT_ID_UNIQ_LEN (64) |
490 | extern char nfs4_client_id_uniquifier[NFS4_CLIENT_ID_UNIQ_LEN]; | |
491 | ||
466bfe7f BS |
492 | /* nfs4sysctl.c */ |
493 | #ifdef CONFIG_SYSCTL | |
494 | int nfs4_register_sysctl(void); | |
495 | void nfs4_unregister_sysctl(void); | |
496 | #else | |
497 | static inline int nfs4_register_sysctl(void) | |
498 | { | |
499 | return 0; | |
500 | } | |
501 | ||
0add3e85 | 502 | static inline void nfs4_unregister_sysctl(void) |
466bfe7f BS |
503 | { |
504 | } | |
505 | #endif | |
506 | ||
4ce79717 | 507 | /* nfs4xdr.c */ |
499b4988 | 508 | extern const struct rpc_procinfo nfs4_procedures[]; |
4ce79717 TM |
509 | |
510 | struct nfs4_mount_data; | |
511 | ||
512 | /* callback_xdr.c */ | |
e9679189 CH |
513 | extern const struct svc_version nfs4_callback_version1; |
514 | extern const struct svc_version nfs4_callback_version4; | |
4ce79717 | 515 | |
f597c537 TM |
516 | static inline void nfs4_stateid_copy(nfs4_stateid *dst, const nfs4_stateid *src) |
517 | { | |
93b717fd TM |
518 | memcpy(dst->data, src->data, sizeof(dst->data)); |
519 | dst->type = src->type; | |
f597c537 TM |
520 | } |
521 | ||
522 | static inline bool nfs4_stateid_match(const nfs4_stateid *dst, const nfs4_stateid *src) | |
523 | { | |
93b717fd TM |
524 | if (dst->type != src->type) |
525 | return false; | |
526 | return memcmp(dst->data, src->data, sizeof(dst->data)) == 0; | |
f597c537 TM |
527 | } |
528 | ||
e999e80e TM |
529 | static inline bool nfs4_stateid_match_other(const nfs4_stateid *dst, const nfs4_stateid *src) |
530 | { | |
531 | return memcmp(dst->other, src->other, NFS4_STATEID_OTHER_SIZE) == 0; | |
532 | } | |
533 | ||
534 | static inline bool nfs4_stateid_is_newer(const nfs4_stateid *s1, const nfs4_stateid *s2) | |
535 | { | |
536 | return (s32)(be32_to_cpu(s1->seqid) - be32_to_cpu(s2->seqid)) > 0; | |
537 | } | |
538 | ||
5d422301 TM |
539 | static inline bool nfs4_valid_open_stateid(const struct nfs4_state *state) |
540 | { | |
541 | return test_bit(NFS_STATE_RECOVERY_FAILED, &state->flags) == 0; | |
542 | } | |
543 | ||
3e7dfb16 TM |
544 | static inline bool nfs4_state_match_open_stateid_other(const struct nfs4_state *state, |
545 | const nfs4_stateid *stateid) | |
546 | { | |
547 | return test_bit(NFS_OPEN_STATE, &state->flags) && | |
548 | nfs4_stateid_match_other(&state->open_stateid, stateid); | |
549 | } | |
550 | ||
4ce79717 TM |
551 | #else |
552 | ||
643168c2 AV |
553 | #define nfs4_close_state(a, b) do { } while (0) |
554 | #define nfs4_close_sync(a, b) do { } while (0) | |
8c21c62c WAA |
555 | #define nfs4_state_protect(a, b, c, d) do { } while (0) |
556 | #define nfs4_state_protect_write(a, b, c, d) do { } while (0) | |
4ce79717 TM |
557 | |
558 | #endif /* CONFIG_NFS_V4 */ | |
559 | #endif /* __LINUX_FS_NFS_NFS4_FS.H */ |