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 | 147 | nfs4_stateid ls_stateid; |
194bc1f4 | 148 | refcount_t ls_count; |
0c0e0d3c | 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 */ |
c9399f21 | 165 | NFS_STATE_CHANGE_WAIT, /* A state changing operation is outstanding */ |
4ce79717 TM |
166 | }; |
167 | ||
168 | struct nfs4_state { | |
169 | struct list_head open_states; /* List of states for the same state_owner */ | |
170 | struct list_head inode_states; /* List of states for the same inode */ | |
171 | struct list_head lock_states; /* List of subservient lock stateids */ | |
172 | ||
173 | struct nfs4_state_owner *owner; /* Pointer to the open owner */ | |
174 | struct inode *inode; /* Pointer to the inode */ | |
175 | ||
176 | unsigned long flags; /* Do we hold any locks? */ | |
8d0a8a9d | 177 | spinlock_t state_lock; /* Protects the lock_states list */ |
4ce79717 | 178 | |
8bda4e4c | 179 | seqlock_t seqlock; /* Protects the stateid/open_stateid */ |
003707c7 TM |
180 | nfs4_stateid stateid; /* Current stateid: may be delegation */ |
181 | nfs4_stateid open_stateid; /* OPEN stateid */ | |
4ce79717 | 182 | |
8bda4e4c | 183 | /* The following 3 fields are protected by owner->so_lock */ |
003707c7 TM |
184 | unsigned int n_rdonly; /* Number of read-only references */ |
185 | unsigned int n_wronly; /* Number of write-only references */ | |
186 | unsigned int n_rdwr; /* Number of read/write references */ | |
dc0b027d | 187 | fmode_t state; /* State on the server (R,W, or RW) */ |
4ce79717 | 188 | atomic_t count; |
c9399f21 TM |
189 | |
190 | wait_queue_head_t waitq; | |
4ce79717 TM |
191 | }; |
192 | ||
193 | ||
194 | struct nfs4_exception { | |
9e33bed5 | 195 | struct nfs4_state *state; |
3114ea7a | 196 | struct inode *inode; |
8487c479 | 197 | nfs4_stateid *stateid; |
b3c2aa07 TM |
198 | long timeout; |
199 | unsigned char delay : 1, | |
200 | recovering : 1, | |
201 | retry : 1; | |
4ce79717 TM |
202 | }; |
203 | ||
204 | struct nfs4_state_recovery_ops { | |
7eff03ae | 205 | int owner_flag_bit; |
b79a4a1b | 206 | int state_flag_bit; |
4ce79717 TM |
207 | int (*recover_open)(struct nfs4_state_owner *, struct nfs4_state *); |
208 | int (*recover_lock)(struct nfs4_state *, struct file_lock *); | |
591d71cb | 209 | int (*establish_clid)(struct nfs_client *, struct rpc_cred *); |
965e9c23 | 210 | int (*reclaim_complete)(struct nfs_client *, struct rpc_cred *); |
05f4c350 CL |
211 | int (*detect_trunking)(struct nfs_client *, struct nfs_client **, |
212 | struct rpc_cred *); | |
4ce79717 TM |
213 | }; |
214 | ||
04fa2c6b AA |
215 | struct nfs4_add_xprt_data { |
216 | struct nfs_client *clp; | |
217 | struct rpc_cred *cred; | |
218 | }; | |
219 | ||
29fba38b | 220 | struct nfs4_state_maintenance_ops { |
2f60ea6b | 221 | int (*sched_state_renewal)(struct nfs_client *, struct rpc_cred *, unsigned); |
a7b72103 | 222 | struct rpc_cred * (*get_state_renewal_cred_locked)(struct nfs_client *); |
8e69514f | 223 | int (*renew_lease)(struct nfs_client *, struct rpc_cred *); |
29fba38b BH |
224 | }; |
225 | ||
ec011fe8 | 226 | struct nfs4_mig_recovery_ops { |
b03d735b CL |
227 | int (*get_locations)(struct inode *, struct nfs4_fs_locations *, |
228 | struct page *, struct rpc_cred *); | |
44c99933 | 229 | int (*fsid_present)(struct inode *, struct rpc_cred *); |
ec011fe8 CL |
230 | }; |
231 | ||
f786aa90 | 232 | extern const struct dentry_operations nfs4_dentry_operations; |
73a79706 BS |
233 | |
234 | /* dir.c */ | |
235 | int nfs_atomic_open(struct inode *, struct dentry *, struct file *, | |
236 | unsigned, umode_t, int *); | |
6b3b5496 | 237 | |
1ae811ee | 238 | /* super.c */ |
239 | extern struct file_system_type nfs4_fs_type; | |
240 | ||
72de53ec | 241 | /* nfs4namespace.c */ |
beffb8fe AV |
242 | struct rpc_clnt *nfs4_negotiate_security(struct rpc_clnt *, struct inode *, |
243 | const struct qstr *); | |
281cad46 BS |
244 | struct vfsmount *nfs4_submount(struct nfs_server *, struct dentry *, |
245 | struct nfs_fh *, struct nfs_fattr *); | |
800c06a5 CL |
246 | int nfs4_replace_transport(struct nfs_server *server, |
247 | const struct nfs4_fs_locations *locations); | |
72de53ec | 248 | |
4ce79717 | 249 | /* nfs4proc.c */ |
f4ac1674 | 250 | extern int nfs4_handle_exception(struct nfs_server *, int, struct nfs4_exception *); |
1c6dcbe5 AS |
251 | extern int nfs4_call_sync(struct rpc_clnt *, struct nfs_server *, |
252 | struct rpc_message *, struct nfs4_sequence_args *, | |
253 | struct nfs4_sequence_res *, int); | |
be3a5d23 | 254 | extern void nfs4_init_sequence(struct nfs4_sequence_args *, struct nfs4_sequence_res *, int); |
bb8b27e5 TM |
255 | extern int nfs4_proc_setclientid(struct nfs_client *, u32, unsigned short, struct rpc_cred *, struct nfs4_setclientid_res *); |
256 | extern int nfs4_proc_setclientid_confirm(struct nfs_client *, struct nfs4_setclientid_res *arg, struct rpc_cred *); | |
5e6b1990 | 257 | extern int nfs4_proc_get_rootfh(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *, bool); |
2cf047c9 | 258 | extern int nfs4_proc_bind_conn_to_session(struct nfs_client *, struct rpc_cred *cred); |
4d643d1d | 259 | extern int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred); |
66245539 | 260 | extern int nfs4_destroy_clientid(struct nfs_client *clp); |
591d71cb | 261 | extern int nfs4_init_clientid(struct nfs_client *, struct rpc_cred *); |
4d643d1d | 262 | extern int nfs41_init_clientid(struct nfs_client *, struct rpc_cred *); |
1f7977c1 | 263 | extern int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait); |
55a97593 | 264 | extern int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle); |
f05d147f BS |
265 | extern int nfs4_proc_fs_locations(struct rpc_clnt *, struct inode *, const struct qstr *, |
266 | struct nfs4_fs_locations *, struct page *); | |
b03d735b CL |
267 | extern int nfs4_proc_get_locations(struct inode *, struct nfs4_fs_locations *, |
268 | struct page *page, struct rpc_cred *); | |
44c99933 | 269 | extern int nfs4_proc_fsid_present(struct inode *, struct rpc_cred *); |
beffb8fe | 270 | extern struct rpc_clnt *nfs4_proc_lookup_mountpoint(struct inode *, const struct qstr *, |
f05d147f | 271 | struct nfs_fh *, struct nfs_fattr *); |
72de53ec | 272 | extern int nfs4_proc_secinfo(struct inode *, const struct qstr *, struct nfs4_secinfo_flavors *); |
64c2ce8b | 273 | extern const struct xattr_handler *nfs4_xattr_handlers[]; |
5521abfd | 274 | extern int nfs4_set_rw_stateid(nfs4_stateid *stateid, |
9b206149 TM |
275 | const struct nfs_open_context *ctx, |
276 | const struct nfs_lock_context *l_ctx, | |
277 | fmode_t fmode); | |
4ce79717 | 278 | |
557134a3 | 279 | #if defined(CONFIG_NFS_V4_1) |
f9c96fcc | 280 | extern int nfs41_sequence_done(struct rpc_task *, struct nfs4_sequence_res *); |
848f5bda TM |
281 | extern int nfs4_proc_create_session(struct nfs_client *, struct rpc_cred *); |
282 | extern int nfs4_proc_destroy_session(struct nfs4_session *, struct rpc_cred *); | |
9430fb6b RL |
283 | extern int nfs4_proc_get_lease_time(struct nfs_client *clp, |
284 | struct nfs_fsinfo *fsinfo); | |
863a3c6c | 285 | extern int nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, |
ef311537 | 286 | bool sync); |
ba84db96 AA |
287 | extern int nfs4_detect_session_trunking(struct nfs_client *clp, |
288 | struct nfs41_exchange_id_res *res, struct rpc_xprt *xprt); | |
94de8b27 AA |
289 | |
290 | static inline bool | |
291 | is_ds_only_client(struct nfs_client *clp) | |
292 | { | |
293 | return (clp->cl_exchange_flags & EXCHGID4_FLAG_MASK_PNFS) == | |
294 | EXCHGID4_FLAG_USE_PNFS_DS; | |
295 | } | |
d83217c1 AA |
296 | |
297 | static inline bool | |
298 | is_ds_client(struct nfs_client *clp) | |
299 | { | |
300 | return clp->cl_exchange_flags & EXCHGID4_FLAG_USE_PNFS_DS; | |
301 | } | |
ab4c2361 | 302 | |
8c21c62c WAA |
303 | static inline bool |
304 | _nfs4_state_protect(struct nfs_client *clp, unsigned long sp4_mode, | |
305 | struct rpc_clnt **clntp, struct rpc_message *msg) | |
ab4c2361 WAA |
306 | { |
307 | struct rpc_cred *newcred = NULL; | |
308 | rpc_authflavor_t flavor; | |
309 | ||
b79e87e0 N |
310 | if (sp4_mode == NFS_SP4_MACH_CRED_CLEANUP || |
311 | sp4_mode == NFS_SP4_MACH_CRED_PNFS_CLEANUP) { | |
312 | /* Using machine creds for cleanup operations | |
313 | * is only relevent if the client credentials | |
314 | * might expire. So don't bother for | |
315 | * RPC_AUTH_UNIX. If file was only exported to | |
316 | * sec=sys, the PUTFH would fail anyway. | |
317 | */ | |
318 | if ((*clntp)->cl_auth->au_flavor == RPC_AUTH_UNIX) | |
319 | return false; | |
320 | } | |
ab4c2361 WAA |
321 | if (test_bit(sp4_mode, &clp->cl_sp4_flags)) { |
322 | spin_lock(&clp->cl_lock); | |
323 | if (clp->cl_machine_cred != NULL) | |
ade33ff5 WAA |
324 | /* don't call get_rpccred on the machine cred - |
325 | * a reference will be held for life of clp */ | |
326 | newcred = clp->cl_machine_cred; | |
ab4c2361 | 327 | spin_unlock(&clp->cl_lock); |
ab4c2361 WAA |
328 | msg->rpc_cred = newcred; |
329 | ||
330 | flavor = clp->cl_rpcclient->cl_auth->au_flavor; | |
312cd958 WAA |
331 | WARN_ON_ONCE(flavor != RPC_AUTH_GSS_KRB5I && |
332 | flavor != RPC_AUTH_GSS_KRB5P); | |
ab4c2361 | 333 | *clntp = clp->cl_rpcclient; |
8c21c62c WAA |
334 | |
335 | return true; | |
ab4c2361 | 336 | } |
8c21c62c WAA |
337 | return false; |
338 | } | |
339 | ||
340 | /* | |
341 | * Function responsible for determining if an rpc_message should use the | |
342 | * machine cred under SP4_MACH_CRED and if so switching the credential and | |
343 | * authflavor (using the nfs_client's rpc_clnt which will be krb5i/p). | |
344 | * Should be called before rpc_call_sync/rpc_call_async. | |
345 | */ | |
346 | static inline void | |
347 | nfs4_state_protect(struct nfs_client *clp, unsigned long sp4_mode, | |
348 | struct rpc_clnt **clntp, struct rpc_message *msg) | |
349 | { | |
350 | _nfs4_state_protect(clp, sp4_mode, clntp, msg); | |
351 | } | |
352 | ||
353 | /* | |
354 | * Special wrapper to nfs4_state_protect for write. | |
355 | * If WRITE can use machine cred but COMMIT cannot, make sure all writes | |
356 | * that use machine cred use NFS_FILE_SYNC. | |
357 | */ | |
358 | static inline void | |
359 | nfs4_state_protect_write(struct nfs_client *clp, struct rpc_clnt **clntp, | |
d45f60c6 | 360 | struct rpc_message *msg, struct nfs_pgio_header *hdr) |
8c21c62c WAA |
361 | { |
362 | if (_nfs4_state_protect(clp, NFS_SP4_MACH_CRED_WRITE, clntp, msg) && | |
363 | !test_bit(NFS_SP4_MACH_CRED_COMMIT, &clp->cl_sp4_flags)) | |
d45f60c6 | 364 | hdr->args.stable = NFS_FILE_SYNC; |
ab4c2361 | 365 | } |
fbcd4abc | 366 | #else /* CONFIG_NFS_v4_1 */ |
94de8b27 AA |
367 | static inline bool |
368 | is_ds_only_client(struct nfs_client *clp) | |
d83217c1 AA |
369 | { |
370 | return false; | |
371 | } | |
372 | ||
373 | static inline bool | |
374 | is_ds_client(struct nfs_client *clp) | |
94de8b27 AA |
375 | { |
376 | return false; | |
377 | } | |
ab4c2361 WAA |
378 | |
379 | static inline void | |
380 | nfs4_state_protect(struct nfs_client *clp, unsigned long sp4_flags, | |
381 | struct rpc_clnt **clntp, struct rpc_message *msg) | |
382 | { | |
383 | } | |
8c21c62c WAA |
384 | |
385 | static inline void | |
386 | nfs4_state_protect_write(struct nfs_client *clp, struct rpc_clnt **clntp, | |
d45f60c6 | 387 | struct rpc_message *msg, struct nfs_pgio_header *hdr) |
8c21c62c WAA |
388 | { |
389 | } | |
557134a3 | 390 | #endif /* CONFIG_NFS_V4_1 */ |
4ce79717 | 391 | |
97dc1359 | 392 | extern const struct nfs4_minor_version_ops *nfs_v4_minor_ops[]; |
29fba38b | 393 | |
1549210f | 394 | extern const u32 nfs4_fattr_bitmap[3]; |
a09df2ca DQ |
395 | extern const u32 nfs4_statfs_bitmap[3]; |
396 | extern const u32 nfs4_pathconf_bitmap[3]; | |
dae100c2 | 397 | extern const u32 nfs4_fsinfo_bitmap[3]; |
a09df2ca | 398 | extern const u32 nfs4_fs_locations_bitmap[3]; |
4ce79717 | 399 | |
abf79bb3 CL |
400 | void nfs40_shutdown_client(struct nfs_client *); |
401 | void nfs41_shutdown_client(struct nfs_client *); | |
402 | int nfs40_init_client(struct nfs_client *); | |
403 | int nfs41_init_client(struct nfs_client *); | |
cdb7eced BS |
404 | void nfs4_free_client(struct nfs_client *); |
405 | ||
6663ee7f BS |
406 | struct nfs_client *nfs4_alloc_client(const struct nfs_client_initdata *); |
407 | ||
4ce79717 | 408 | /* nfs4renewd.c */ |
adfa6f98 | 409 | extern void nfs4_schedule_state_renewal(struct nfs_client *); |
4ce79717 | 410 | extern void nfs4_renewd_prepare_shutdown(struct nfs_server *); |
adfa6f98 | 411 | extern void nfs4_kill_renewd(struct nfs_client *); |
65f27f38 | 412 | extern void nfs4_renew_state(struct work_struct *); |
fb10fb67 TM |
413 | extern void nfs4_set_lease_period(struct nfs_client *clp, |
414 | unsigned long lease, | |
415 | unsigned long lastrenewed); | |
416 | ||
4ce79717 TM |
417 | |
418 | /* nfs4state.c */ | |
73d8bde5 | 419 | struct rpc_cred *nfs4_get_clid_cred(struct nfs_client *clp); |
fe20d7d5 | 420 | struct rpc_cred *nfs4_get_machine_cred_locked(struct nfs_client *clp); |
6dc9d57a | 421 | struct rpc_cred *nfs4_get_renew_cred_locked(struct nfs_client *clp); |
05f4c350 CL |
422 | int nfs4_discover_server_trunking(struct nfs_client *clp, |
423 | struct nfs_client **); | |
424 | int nfs40_discover_server_trunking(struct nfs_client *clp, | |
425 | struct nfs_client **, struct rpc_cred *); | |
a7b72103 | 426 | #if defined(CONFIG_NFS_V4_1) |
05f4c350 CL |
427 | int nfs41_discover_server_trunking(struct nfs_client *clp, |
428 | struct nfs_client **, struct rpc_cred *); | |
9f594791 | 429 | extern void nfs4_schedule_session_recovery(struct nfs4_session *, int); |
3f10a6af | 430 | extern void nfs41_notify_server(struct nfs_client *); |
0400a6b0 | 431 | #else |
9f594791 | 432 | static inline void nfs4_schedule_session_recovery(struct nfs4_session *session, int err) |
0400a6b0 TM |
433 | { |
434 | } | |
a7b72103 | 435 | #endif /* CONFIG_NFS_V4_1 */ |
4ce79717 | 436 | |
d1e284d5 | 437 | extern struct nfs4_state_owner *nfs4_get_state_owner(struct nfs_server *, struct rpc_cred *, gfp_t); |
4ce79717 | 438 | extern void nfs4_put_state_owner(struct nfs4_state_owner *); |
0aaaf5c4 | 439 | extern void nfs4_purge_state_owners(struct nfs_server *); |
4ce79717 TM |
440 | extern struct nfs4_state * nfs4_get_open_state(struct inode *, struct nfs4_state_owner *); |
441 | extern void nfs4_put_open_state(struct nfs4_state *); | |
643168c2 AV |
442 | extern void nfs4_close_state(struct nfs4_state *, fmode_t); |
443 | extern void nfs4_close_sync(struct nfs4_state *, fmode_t); | |
dc0b027d | 444 | extern void nfs4_state_set_mode_locked(struct nfs4_state *, fmode_t); |
a1d0b5ee TM |
445 | extern void nfs_inode_find_state_and_recover(struct inode *inode, |
446 | const nfs4_stateid *stateid); | |
4f14c194 | 447 | extern int nfs4_state_mark_reclaim_nograce(struct nfs_client *, struct nfs4_state *); |
0400a6b0 | 448 | extern void nfs4_schedule_lease_recovery(struct nfs_client *); |
33021279 TM |
449 | extern int nfs4_wait_clnt_recover(struct nfs_client *clp); |
450 | extern int nfs4_client_recover_expired_lease(struct nfs_client *clp); | |
b0d3ded1 | 451 | extern void nfs4_schedule_state_manager(struct nfs_client *); |
042b60be | 452 | extern void nfs4_schedule_path_down_recovery(struct nfs_client *clp); |
5d422301 | 453 | extern int nfs4_schedule_stateid_recovery(const struct nfs_server *, struct nfs4_state *); |
c9fdeb28 | 454 | extern int nfs4_schedule_migration_recovery(const struct nfs_server *); |
b7f7a66e | 455 | extern void nfs4_schedule_lease_moved_recovery(struct nfs_client *); |
0a014a44 | 456 | extern void nfs41_handle_sequence_flag_errors(struct nfs_client *clp, u32 flags, bool); |
78fe0f41 | 457 | extern void nfs41_handle_server_scope(struct nfs_client *, |
79d4e1f0 | 458 | struct nfs41_server_scope **); |
faf5f49c | 459 | extern void nfs4_put_lock_state(struct nfs4_lock_state *lsp); |
8d0a8a9d | 460 | extern int nfs4_set_lock_state(struct nfs4_state *state, struct file_lock *fl); |
abf4e13c | 461 | extern int nfs4_select_rw_stateid(struct nfs4_state *, fmode_t, |
17393475 | 462 | const struct nfs_lock_context *, nfs4_stateid *, |
abf4e13c | 463 | struct rpc_cred **); |
12f275cd TM |
464 | extern bool nfs4_refresh_open_stateid(nfs4_stateid *dst, |
465 | struct nfs4_state *state); | |
c82bac6f TM |
466 | extern bool nfs4_copy_open_stateid(nfs4_stateid *dst, |
467 | struct nfs4_state *state); | |
4ce79717 | 468 | |
8535b2be | 469 | extern struct nfs_seqid *nfs_alloc_seqid(struct nfs_seqid_counter *counter, gfp_t gfp_mask); |
cee54fc9 TM |
470 | extern int nfs_wait_on_sequence(struct nfs_seqid *seqid, struct rpc_task *task); |
471 | extern void nfs_increment_open_seqid(int status, struct nfs_seqid *seqid); | |
472 | extern void nfs_increment_lock_seqid(int status, struct nfs_seqid *seqid); | |
72211dbe | 473 | extern void nfs_release_seqid(struct nfs_seqid *seqid); |
cee54fc9 | 474 | extern void nfs_free_seqid(struct nfs_seqid *seqid); |
3be0f80b | 475 | extern int nfs4_setup_sequence(struct nfs_client *client, |
cb04ad2a PT |
476 | struct nfs4_sequence_args *args, |
477 | struct nfs4_sequence_res *res, | |
478 | struct rpc_task *task); | |
2c4b131d PT |
479 | extern int nfs4_sequence_done(struct rpc_task *task, |
480 | struct nfs4_sequence_res *res); | |
cee54fc9 | 481 | |
5ae67c4f | 482 | extern void nfs4_free_lock_state(struct nfs_server *server, struct nfs4_lock_state *lsp); |
cf470c3e | 483 | |
4ce79717 | 484 | extern const nfs4_stateid zero_stateid; |
fcd8843c | 485 | extern const nfs4_stateid invalid_stateid; |
4ce79717 | 486 | |
129d1977 | 487 | /* nfs4super.c */ |
fbdefd64 | 488 | struct nfs_mount_info; |
ab7017a3 | 489 | extern struct nfs_subversion nfs_v4; |
ff9099f2 | 490 | struct dentry *nfs4_try_mount(int, const char *, struct nfs_mount_info *, struct nfs_subversion *); |
fac1e8e4 BS |
491 | extern bool nfs4_disable_idmapping; |
492 | extern unsigned short max_session_slots; | |
5405fc44 | 493 | extern unsigned short max_session_cb_slots; |
fac1e8e4 | 494 | extern unsigned short send_implementation_id; |
f6de7a39 | 495 | extern bool recover_lost_locks; |
89d77c8f | 496 | |
6f2ea7f2 CL |
497 | #define NFS4_CLIENT_ID_UNIQ_LEN (64) |
498 | extern char nfs4_client_id_uniquifier[NFS4_CLIENT_ID_UNIQ_LEN]; | |
499 | ||
466bfe7f BS |
500 | /* nfs4sysctl.c */ |
501 | #ifdef CONFIG_SYSCTL | |
502 | int nfs4_register_sysctl(void); | |
503 | void nfs4_unregister_sysctl(void); | |
504 | #else | |
505 | static inline int nfs4_register_sysctl(void) | |
506 | { | |
507 | return 0; | |
508 | } | |
509 | ||
0add3e85 | 510 | static inline void nfs4_unregister_sysctl(void) |
466bfe7f BS |
511 | { |
512 | } | |
513 | #endif | |
514 | ||
4ce79717 | 515 | /* nfs4xdr.c */ |
499b4988 | 516 | extern const struct rpc_procinfo nfs4_procedures[]; |
4ce79717 TM |
517 | |
518 | struct nfs4_mount_data; | |
519 | ||
520 | /* callback_xdr.c */ | |
e9679189 CH |
521 | extern const struct svc_version nfs4_callback_version1; |
522 | extern const struct svc_version nfs4_callback_version4; | |
4ce79717 | 523 | |
f597c537 TM |
524 | static inline void nfs4_stateid_copy(nfs4_stateid *dst, const nfs4_stateid *src) |
525 | { | |
93b717fd TM |
526 | memcpy(dst->data, src->data, sizeof(dst->data)); |
527 | dst->type = src->type; | |
f597c537 TM |
528 | } |
529 | ||
530 | static inline bool nfs4_stateid_match(const nfs4_stateid *dst, const nfs4_stateid *src) | |
531 | { | |
93b717fd TM |
532 | if (dst->type != src->type) |
533 | return false; | |
534 | return memcmp(dst->data, src->data, sizeof(dst->data)) == 0; | |
f597c537 TM |
535 | } |
536 | ||
e999e80e TM |
537 | static inline bool nfs4_stateid_match_other(const nfs4_stateid *dst, const nfs4_stateid *src) |
538 | { | |
539 | return memcmp(dst->other, src->other, NFS4_STATEID_OTHER_SIZE) == 0; | |
540 | } | |
541 | ||
542 | static inline bool nfs4_stateid_is_newer(const nfs4_stateid *s1, const nfs4_stateid *s2) | |
543 | { | |
544 | return (s32)(be32_to_cpu(s1->seqid) - be32_to_cpu(s2->seqid)) > 0; | |
545 | } | |
546 | ||
5d422301 TM |
547 | static inline bool nfs4_valid_open_stateid(const struct nfs4_state *state) |
548 | { | |
549 | return test_bit(NFS_STATE_RECOVERY_FAILED, &state->flags) == 0; | |
550 | } | |
551 | ||
3e7dfb16 TM |
552 | static inline bool nfs4_state_match_open_stateid_other(const struct nfs4_state *state, |
553 | const nfs4_stateid *stateid) | |
554 | { | |
555 | return test_bit(NFS_OPEN_STATE, &state->flags) && | |
556 | nfs4_stateid_match_other(&state->open_stateid, stateid); | |
557 | } | |
558 | ||
4ce79717 TM |
559 | #else |
560 | ||
643168c2 AV |
561 | #define nfs4_close_state(a, b) do { } while (0) |
562 | #define nfs4_close_sync(a, b) do { } while (0) | |
8c21c62c WAA |
563 | #define nfs4_state_protect(a, b, c, d) do { } while (0) |
564 | #define nfs4_state_protect_write(a, b, c, d) do { } while (0) | |
4ce79717 TM |
565 | |
566 | #endif /* CONFIG_NFS_V4 */ | |
567 | #endif /* __LINUX_FS_NFS_NFS4_FS.H */ |