Commit | Line | Data |
---|---|---|
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, |
aeabb3c9 TM |
44 | NFS4CLNT_RUN_MANAGER, |
45 | NFS4CLNT_DELEGRETURN_RUNNING, | |
4ce79717 TM |
46 | }; |
47 | ||
2f60ea6b TM |
48 | #define NFS4_RENEW_TIMEOUT 0x01 |
49 | #define NFS4_RENEW_DELEGATION_CB 0x02 | |
50 | ||
63f5f796 | 51 | struct nfs_seqid_counter; |
97dc1359 TM |
52 | struct nfs4_minor_version_ops { |
53 | u32 minor_version; | |
39c6daae | 54 | unsigned init_caps; |
97dc1359 | 55 | |
abf79bb3 CL |
56 | int (*init_client)(struct nfs_client *); |
57 | void (*shutdown_client)(struct nfs_client *); | |
36281caa | 58 | bool (*match_stateid)(const nfs4_stateid *, |
e047a10c | 59 | const nfs4_stateid *); |
fca78d6d BS |
60 | int (*find_root_sec)(struct nfs_server *, struct nfs_fh *, |
61 | struct nfs_fsinfo *); | |
f1cdae87 | 62 | void (*free_lock_state)(struct nfs_server *, |
c8b2d0bf | 63 | struct nfs4_lock_state *); |
45870d69 | 64 | int (*test_and_free_expired)(struct nfs_server *, |
a52458b4 | 65 | nfs4_stateid *, const struct cred *); |
63f5f796 TM |
66 | struct nfs_seqid * |
67 | (*alloc_seqid)(struct nfs_seqid_counter *, gfp_t); | |
10e037d1 S |
68 | void (*session_trunk)(struct rpc_clnt *clnt, |
69 | struct rpc_xprt *xprt, void *data); | |
9915ea7e | 70 | const struct rpc_call_ops *call_sync_ops; |
c48f4f35 TM |
71 | const struct nfs4_state_recovery_ops *reboot_recovery_ops; |
72 | const struct nfs4_state_recovery_ops *nograce_recovery_ops; | |
73 | const struct nfs4_state_maintenance_ops *state_renewal_ops; | |
ec011fe8 | 74 | const struct nfs4_mig_recovery_ops *mig_recovery_ops; |
97dc1359 TM |
75 | }; |
76 | ||
cee54fc9 TM |
77 | #define NFS_SEQID_CONFIRMED 1 |
78 | struct nfs_seqid_counter { | |
95b72eb0 | 79 | ktime_t create_time; |
48c22eb2 | 80 | int owner_id; |
cee54fc9 TM |
81 | int flags; |
82 | u32 counter; | |
7ba127ab TM |
83 | spinlock_t lock; /* Protects the list */ |
84 | struct list_head list; /* Defines sequence of RPC calls */ | |
85 | struct rpc_wait_queue wait; /* RPC call delay queue */ | |
cee54fc9 TM |
86 | }; |
87 | ||
88 | struct nfs_seqid { | |
cee54fc9 | 89 | struct nfs_seqid_counter *sequence; |
4e51336a | 90 | struct list_head list; |
4601df20 | 91 | struct rpc_task *task; |
cee54fc9 TM |
92 | }; |
93 | ||
94 | static inline void nfs_confirm_seqid(struct nfs_seqid_counter *seqid, int status) | |
95 | { | |
96 | if (seqid_mutating_err(-status)) | |
97 | seqid->flags |= NFS_SEQID_CONFIRMED; | |
98 | } | |
99 | ||
4ce79717 TM |
100 | /* |
101 | * NFS4 state_owners and lock_owners are simply labels for ordered | |
102 | * sequences of RPC calls. Their sole purpose is to provide once-only | |
103 | * semantics by allowing the server to identify replayed requests. | |
4ce79717 TM |
104 | */ |
105 | struct nfs4_state_owner { | |
6f2e64d3 | 106 | struct nfs_server *so_server; |
0aaaf5c4 CL |
107 | struct list_head so_lru; |
108 | unsigned long so_expires; | |
24d292b8 | 109 | struct rb_node so_server_node; |
4ce79717 | 110 | |
a52458b4 | 111 | const struct cred *so_cred; /* Associated cred */ |
9f958ab8 TM |
112 | |
113 | spinlock_t so_lock; | |
114 | atomic_t so_count; | |
7eff03ae | 115 | unsigned long so_flags; |
4ce79717 | 116 | struct list_head so_states; |
cee54fc9 | 117 | struct nfs_seqid_counter so_seqid; |
c137afab | 118 | seqcount_t so_reclaim_seqcount; |
65b62a29 | 119 | struct mutex so_delegreturn_mutex; |
4ce79717 TM |
120 | }; |
121 | ||
7eff03ae TM |
122 | enum { |
123 | NFS_OWNER_RECLAIM_REBOOT, | |
124 | NFS_OWNER_RECLAIM_NOGRACE | |
125 | }; | |
126 | ||
afe6c27c AB |
127 | #define NFS_LOCK_NEW 0 |
128 | #define NFS_LOCK_RECLAIM 1 | |
129 | #define NFS_LOCK_EXPIRED 2 | |
130 | ||
4ce79717 TM |
131 | /* |
132 | * struct nfs4_state maintains the client-side state for a given | |
133 | * (state_owner,inode) tuple (OPEN) or state_owner (LOCK). | |
134 | * | |
135 | * OPEN: | |
136 | * In order to know when to OPEN_DOWNGRADE or CLOSE the state on the server, | |
137 | * we need to know how many files are open for reading or writing on a | |
138 | * given inode. This information too is stored here. | |
139 | * | |
140 | * LOCK: one nfs4_state (LOCK) to hold the lock stateid nfs4_state(OPEN) | |
141 | */ | |
142 | ||
143 | struct nfs4_lock_state { | |
0c0e0d3c JL |
144 | struct list_head ls_locks; /* Other lock stateids */ |
145 | struct nfs4_state * ls_state; /* Pointer to open state */ | |
795a88c9 | 146 | #define NFS_LOCK_INITIALIZED 0 |
ef1820f9 | 147 | #define NFS_LOCK_LOST 1 |
0c0e0d3c | 148 | unsigned long ls_flags; |
cee54fc9 | 149 | struct nfs_seqid_counter ls_seqid; |
0c0e0d3c | 150 | nfs4_stateid ls_stateid; |
194bc1f4 | 151 | refcount_t ls_count; |
0c0e0d3c | 152 | fl_owner_t ls_owner; |
4ce79717 TM |
153 | }; |
154 | ||
155 | /* bits for nfs4_state->flags */ | |
156 | enum { | |
157 | LK_STATE_IN_USE, | |
003707c7 | 158 | NFS_DELEGATED_STATE, /* Current stateid is delegation */ |
92b40e93 | 159 | NFS_OPEN_STATE, /* OPEN stateid is set */ |
003707c7 TM |
160 | NFS_O_RDONLY_STATE, /* OPEN stateid has read-only state */ |
161 | NFS_O_WRONLY_STATE, /* OPEN stateid has write-only state */ | |
162 | NFS_O_RDWR_STATE, /* OPEN stateid has read/write state */ | |
b79a4a1b TM |
163 | NFS_STATE_RECLAIM_REBOOT, /* OPEN stateid server rebooted */ |
164 | NFS_STATE_RECLAIM_NOGRACE, /* OPEN stateid needs to recover state */ | |
8e469ebd | 165 | NFS_STATE_POSIX_LOCKS, /* Posix locks are supported */ |
5d422301 | 166 | NFS_STATE_RECOVERY_FAILED, /* OPEN stateid state recovery failed */ |
a8ce377a | 167 | NFS_STATE_MAY_NOTIFY_LOCK, /* server may CB_NOTIFY_LOCK */ |
c9399f21 | 168 | NFS_STATE_CHANGE_WAIT, /* A state changing operation is outstanding */ |
e4648aa4 OK |
169 | #ifdef CONFIG_NFS_V4_2 |
170 | NFS_CLNT_DST_SSC_COPY_STATE, /* dst server open state on client*/ | |
171 | #endif /* CONFIG_NFS_V4_2 */ | |
4ce79717 TM |
172 | }; |
173 | ||
174 | struct nfs4_state { | |
175 | struct list_head open_states; /* List of states for the same state_owner */ | |
176 | struct list_head inode_states; /* List of states for the same inode */ | |
177 | struct list_head lock_states; /* List of subservient lock stateids */ | |
178 | ||
179 | struct nfs4_state_owner *owner; /* Pointer to the open owner */ | |
180 | struct inode *inode; /* Pointer to the inode */ | |
181 | ||
182 | unsigned long flags; /* Do we hold any locks? */ | |
8d0a8a9d | 183 | spinlock_t state_lock; /* Protects the lock_states list */ |
4ce79717 | 184 | |
8bda4e4c | 185 | seqlock_t seqlock; /* Protects the stateid/open_stateid */ |
003707c7 TM |
186 | nfs4_stateid stateid; /* Current stateid: may be delegation */ |
187 | nfs4_stateid open_stateid; /* OPEN stateid */ | |
4ce79717 | 188 | |
8bda4e4c | 189 | /* The following 3 fields are protected by owner->so_lock */ |
003707c7 TM |
190 | unsigned int n_rdonly; /* Number of read-only references */ |
191 | unsigned int n_wronly; /* Number of write-only references */ | |
192 | unsigned int n_rdwr; /* Number of read/write references */ | |
dc0b027d | 193 | fmode_t state; /* State on the server (R,W, or RW) */ |
ace9fad4 | 194 | refcount_t count; |
c9399f21 TM |
195 | |
196 | wait_queue_head_t waitq; | |
9ae075fd | 197 | struct rcu_head rcu_head; |
4ce79717 TM |
198 | }; |
199 | ||
200 | ||
201 | struct nfs4_exception { | |
9e33bed5 | 202 | struct nfs4_state *state; |
3114ea7a | 203 | struct inode *inode; |
8487c479 | 204 | nfs4_stateid *stateid; |
b3c2aa07 TM |
205 | long timeout; |
206 | unsigned char delay : 1, | |
207 | recovering : 1, | |
208 | retry : 1; | |
0688e64b | 209 | bool interruptible; |
4ce79717 TM |
210 | }; |
211 | ||
212 | struct nfs4_state_recovery_ops { | |
7eff03ae | 213 | int owner_flag_bit; |
b79a4a1b | 214 | int state_flag_bit; |
4ce79717 TM |
215 | int (*recover_open)(struct nfs4_state_owner *, struct nfs4_state *); |
216 | int (*recover_lock)(struct nfs4_state *, struct file_lock *); | |
a52458b4 N |
217 | int (*establish_clid)(struct nfs_client *, const struct cred *); |
218 | int (*reclaim_complete)(struct nfs_client *, const struct cred *); | |
05f4c350 | 219 | int (*detect_trunking)(struct nfs_client *, struct nfs_client **, |
a52458b4 | 220 | const struct cred *); |
4ce79717 TM |
221 | }; |
222 | ||
1b146fcf FI |
223 | struct nfs4_opendata { |
224 | struct kref kref; | |
225 | struct nfs_openargs o_arg; | |
226 | struct nfs_openres o_res; | |
227 | struct nfs_open_confirmargs c_arg; | |
228 | struct nfs_open_confirmres c_res; | |
229 | struct nfs4_string owner_name; | |
230 | struct nfs4_string group_name; | |
231 | struct nfs4_label *a_label; | |
232 | struct nfs_fattr f_attr; | |
233 | struct nfs4_label *f_label; | |
234 | struct dentry *dir; | |
235 | struct dentry *dentry; | |
236 | struct nfs4_state_owner *owner; | |
237 | struct nfs4_state *state; | |
238 | struct iattr attrs; | |
239 | struct nfs4_layoutget *lgp; | |
240 | unsigned long timestamp; | |
241 | bool rpc_done; | |
242 | bool file_created; | |
243 | bool is_recover; | |
244 | bool cancelled; | |
245 | int rpc_status; | |
246 | }; | |
247 | ||
04fa2c6b AA |
248 | struct nfs4_add_xprt_data { |
249 | struct nfs_client *clp; | |
a52458b4 | 250 | const struct cred *cred; |
04fa2c6b AA |
251 | }; |
252 | ||
29fba38b | 253 | struct nfs4_state_maintenance_ops { |
a52458b4 N |
254 | int (*sched_state_renewal)(struct nfs_client *, const struct cred *, unsigned); |
255 | const struct cred * (*get_state_renewal_cred)(struct nfs_client *); | |
256 | int (*renew_lease)(struct nfs_client *, const struct cred *); | |
29fba38b BH |
257 | }; |
258 | ||
ec011fe8 | 259 | struct nfs4_mig_recovery_ops { |
b03d735b | 260 | int (*get_locations)(struct inode *, struct nfs4_fs_locations *, |
a52458b4 N |
261 | struct page *, const struct cred *); |
262 | int (*fsid_present)(struct inode *, const struct cred *); | |
ec011fe8 CL |
263 | }; |
264 | ||
f786aa90 | 265 | extern const struct dentry_operations nfs4_dentry_operations; |
73a79706 BS |
266 | |
267 | /* dir.c */ | |
268 | int nfs_atomic_open(struct inode *, struct dentry *, struct file *, | |
44907d79 | 269 | unsigned, umode_t); |
6b3b5496 | 270 | |
1ae811ee | 271 | /* super.c */ |
272 | extern struct file_system_type nfs4_fs_type; | |
273 | ||
72de53ec | 274 | /* nfs4namespace.c */ |
beffb8fe AV |
275 | struct rpc_clnt *nfs4_negotiate_security(struct rpc_clnt *, struct inode *, |
276 | const struct qstr *); | |
281cad46 BS |
277 | struct vfsmount *nfs4_submount(struct nfs_server *, struct dentry *, |
278 | struct nfs_fh *, struct nfs_fattr *); | |
800c06a5 CL |
279 | int nfs4_replace_transport(struct nfs_server *server, |
280 | const struct nfs4_fs_locations *locations); | |
72de53ec | 281 | |
4ce79717 | 282 | /* nfs4proc.c */ |
f4ac1674 | 283 | extern int nfs4_handle_exception(struct nfs_server *, int, struct nfs4_exception *); |
0f913a57 OK |
284 | extern int nfs4_async_handle_error(struct rpc_task *task, |
285 | struct nfs_server *server, | |
286 | struct nfs4_state *state, long *timeout); | |
1c6dcbe5 AS |
287 | extern int nfs4_call_sync(struct rpc_clnt *, struct nfs_server *, |
288 | struct rpc_message *, struct nfs4_sequence_args *, | |
289 | struct nfs4_sequence_res *, int); | |
fba83f34 | 290 | extern void nfs4_init_sequence(struct nfs4_sequence_args *, struct nfs4_sequence_res *, int, int); |
a52458b4 N |
291 | extern int nfs4_proc_setclientid(struct nfs_client *, u32, unsigned short, const struct cred *, struct nfs4_setclientid_res *); |
292 | extern int nfs4_proc_setclientid_confirm(struct nfs_client *, struct nfs4_setclientid_res *arg, const struct cred *); | |
5e6b1990 | 293 | extern int nfs4_proc_get_rootfh(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *, bool); |
a52458b4 N |
294 | extern int nfs4_proc_bind_conn_to_session(struct nfs_client *, const struct cred *cred); |
295 | extern int nfs4_proc_exchange_id(struct nfs_client *clp, const struct cred *cred); | |
66245539 | 296 | extern int nfs4_destroy_clientid(struct nfs_client *clp); |
a52458b4 N |
297 | extern int nfs4_init_clientid(struct nfs_client *, const struct cred *); |
298 | extern int nfs41_init_clientid(struct nfs_client *, const struct cred *); | |
1f7977c1 | 299 | extern int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait); |
55a97593 | 300 | extern int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle); |
f05d147f BS |
301 | extern int nfs4_proc_fs_locations(struct rpc_clnt *, struct inode *, const struct qstr *, |
302 | struct nfs4_fs_locations *, struct page *); | |
b03d735b | 303 | extern int nfs4_proc_get_locations(struct inode *, struct nfs4_fs_locations *, |
a52458b4 N |
304 | struct page *page, const struct cred *); |
305 | extern int nfs4_proc_fsid_present(struct inode *, const struct cred *); | |
beffb8fe | 306 | extern struct rpc_clnt *nfs4_proc_lookup_mountpoint(struct inode *, const struct qstr *, |
f05d147f | 307 | struct nfs_fh *, struct nfs_fattr *); |
72de53ec | 308 | extern int nfs4_proc_secinfo(struct inode *, const struct qstr *, struct nfs4_secinfo_flavors *); |
64c2ce8b | 309 | extern const struct xattr_handler *nfs4_xattr_handlers[]; |
5521abfd | 310 | extern int nfs4_set_rw_stateid(nfs4_stateid *stateid, |
9b206149 TM |
311 | const struct nfs_open_context *ctx, |
312 | const struct nfs_lock_context *l_ctx, | |
313 | fmode_t fmode); | |
4ce79717 | 314 | |
0efb01b2 DB |
315 | extern int nfs4_proc_get_lease_time(struct nfs_client *clp, |
316 | struct nfs_fsinfo *fsinfo); | |
557134a3 | 317 | #if defined(CONFIG_NFS_V4_1) |
f9c96fcc | 318 | extern int nfs41_sequence_done(struct rpc_task *, struct nfs4_sequence_res *); |
a52458b4 N |
319 | extern int nfs4_proc_create_session(struct nfs_client *, const struct cred *); |
320 | extern int nfs4_proc_destroy_session(struct nfs4_session *, const struct cred *); | |
863a3c6c | 321 | extern int nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, |
ef311537 | 322 | bool sync); |
ba84db96 AA |
323 | extern int nfs4_detect_session_trunking(struct nfs_client *clp, |
324 | struct nfs41_exchange_id_res *res, struct rpc_xprt *xprt); | |
94de8b27 AA |
325 | |
326 | static inline bool | |
327 | is_ds_only_client(struct nfs_client *clp) | |
328 | { | |
329 | return (clp->cl_exchange_flags & EXCHGID4_FLAG_MASK_PNFS) == | |
330 | EXCHGID4_FLAG_USE_PNFS_DS; | |
331 | } | |
d83217c1 AA |
332 | |
333 | static inline bool | |
334 | is_ds_client(struct nfs_client *clp) | |
335 | { | |
336 | return clp->cl_exchange_flags & EXCHGID4_FLAG_USE_PNFS_DS; | |
337 | } | |
ab4c2361 | 338 | |
8c21c62c WAA |
339 | static inline bool |
340 | _nfs4_state_protect(struct nfs_client *clp, unsigned long sp4_mode, | |
341 | struct rpc_clnt **clntp, struct rpc_message *msg) | |
ab4c2361 | 342 | { |
ab4c2361 WAA |
343 | rpc_authflavor_t flavor; |
344 | ||
b79e87e0 N |
345 | if (sp4_mode == NFS_SP4_MACH_CRED_CLEANUP || |
346 | sp4_mode == NFS_SP4_MACH_CRED_PNFS_CLEANUP) { | |
347 | /* Using machine creds for cleanup operations | |
348 | * is only relevent if the client credentials | |
349 | * might expire. So don't bother for | |
350 | * RPC_AUTH_UNIX. If file was only exported to | |
351 | * sec=sys, the PUTFH would fail anyway. | |
352 | */ | |
353 | if ((*clntp)->cl_auth->au_flavor == RPC_AUTH_UNIX) | |
354 | return false; | |
355 | } | |
ab4c2361 | 356 | if (test_bit(sp4_mode, &clp->cl_sp4_flags)) { |
5e16923b | 357 | msg->rpc_cred = rpc_machine_cred(); |
ab4c2361 WAA |
358 | |
359 | flavor = clp->cl_rpcclient->cl_auth->au_flavor; | |
312cd958 WAA |
360 | WARN_ON_ONCE(flavor != RPC_AUTH_GSS_KRB5I && |
361 | flavor != RPC_AUTH_GSS_KRB5P); | |
ab4c2361 | 362 | *clntp = clp->cl_rpcclient; |
8c21c62c WAA |
363 | |
364 | return true; | |
ab4c2361 | 365 | } |
8c21c62c WAA |
366 | return false; |
367 | } | |
368 | ||
369 | /* | |
370 | * Function responsible for determining if an rpc_message should use the | |
371 | * machine cred under SP4_MACH_CRED and if so switching the credential and | |
372 | * authflavor (using the nfs_client's rpc_clnt which will be krb5i/p). | |
373 | * Should be called before rpc_call_sync/rpc_call_async. | |
374 | */ | |
375 | static inline void | |
376 | nfs4_state_protect(struct nfs_client *clp, unsigned long sp4_mode, | |
377 | struct rpc_clnt **clntp, struct rpc_message *msg) | |
378 | { | |
379 | _nfs4_state_protect(clp, sp4_mode, clntp, msg); | |
380 | } | |
381 | ||
382 | /* | |
383 | * Special wrapper to nfs4_state_protect for write. | |
384 | * If WRITE can use machine cred but COMMIT cannot, make sure all writes | |
385 | * that use machine cred use NFS_FILE_SYNC. | |
386 | */ | |
387 | static inline void | |
388 | nfs4_state_protect_write(struct nfs_client *clp, struct rpc_clnt **clntp, | |
d45f60c6 | 389 | struct rpc_message *msg, struct nfs_pgio_header *hdr) |
8c21c62c WAA |
390 | { |
391 | if (_nfs4_state_protect(clp, NFS_SP4_MACH_CRED_WRITE, clntp, msg) && | |
392 | !test_bit(NFS_SP4_MACH_CRED_COMMIT, &clp->cl_sp4_flags)) | |
d45f60c6 | 393 | hdr->args.stable = NFS_FILE_SYNC; |
ab4c2361 | 394 | } |
fbcd4abc | 395 | #else /* CONFIG_NFS_v4_1 */ |
94de8b27 AA |
396 | static inline bool |
397 | is_ds_only_client(struct nfs_client *clp) | |
d83217c1 AA |
398 | { |
399 | return false; | |
400 | } | |
401 | ||
402 | static inline bool | |
403 | is_ds_client(struct nfs_client *clp) | |
94de8b27 AA |
404 | { |
405 | return false; | |
406 | } | |
ab4c2361 WAA |
407 | |
408 | static inline void | |
409 | nfs4_state_protect(struct nfs_client *clp, unsigned long sp4_flags, | |
410 | struct rpc_clnt **clntp, struct rpc_message *msg) | |
411 | { | |
412 | } | |
8c21c62c WAA |
413 | |
414 | static inline void | |
415 | nfs4_state_protect_write(struct nfs_client *clp, struct rpc_clnt **clntp, | |
d45f60c6 | 416 | struct rpc_message *msg, struct nfs_pgio_header *hdr) |
8c21c62c WAA |
417 | { |
418 | } | |
557134a3 | 419 | #endif /* CONFIG_NFS_V4_1 */ |
4ce79717 | 420 | |
97dc1359 | 421 | extern const struct nfs4_minor_version_ops *nfs_v4_minor_ops[]; |
29fba38b | 422 | |
1549210f | 423 | extern const u32 nfs4_fattr_bitmap[3]; |
a09df2ca DQ |
424 | extern const u32 nfs4_statfs_bitmap[3]; |
425 | extern const u32 nfs4_pathconf_bitmap[3]; | |
dae100c2 | 426 | extern const u32 nfs4_fsinfo_bitmap[3]; |
a09df2ca | 427 | extern const u32 nfs4_fs_locations_bitmap[3]; |
4ce79717 | 428 | |
abf79bb3 CL |
429 | void nfs40_shutdown_client(struct nfs_client *); |
430 | void nfs41_shutdown_client(struct nfs_client *); | |
431 | int nfs40_init_client(struct nfs_client *); | |
432 | int nfs41_init_client(struct nfs_client *); | |
cdb7eced BS |
433 | void nfs4_free_client(struct nfs_client *); |
434 | ||
6663ee7f BS |
435 | struct nfs_client *nfs4_alloc_client(const struct nfs_client_initdata *); |
436 | ||
4ce79717 | 437 | /* nfs4renewd.c */ |
adfa6f98 | 438 | extern void nfs4_schedule_state_renewal(struct nfs_client *); |
4ce79717 | 439 | extern void nfs4_renewd_prepare_shutdown(struct nfs_server *); |
adfa6f98 | 440 | extern void nfs4_kill_renewd(struct nfs_client *); |
65f27f38 | 441 | extern void nfs4_renew_state(struct work_struct *); |
fb10fb67 TM |
442 | extern void nfs4_set_lease_period(struct nfs_client *clp, |
443 | unsigned long lease, | |
444 | unsigned long lastrenewed); | |
445 | ||
4ce79717 TM |
446 | |
447 | /* nfs4state.c */ | |
a52458b4 N |
448 | const struct cred *nfs4_get_clid_cred(struct nfs_client *clp); |
449 | const struct cred *nfs4_get_machine_cred(struct nfs_client *clp); | |
450 | const struct cred *nfs4_get_renew_cred(struct nfs_client *clp); | |
05f4c350 CL |
451 | int nfs4_discover_server_trunking(struct nfs_client *clp, |
452 | struct nfs_client **); | |
453 | int nfs40_discover_server_trunking(struct nfs_client *clp, | |
a52458b4 | 454 | struct nfs_client **, const struct cred *); |
a7b72103 | 455 | #if defined(CONFIG_NFS_V4_1) |
05f4c350 | 456 | int nfs41_discover_server_trunking(struct nfs_client *clp, |
a52458b4 | 457 | struct nfs_client **, const struct cred *); |
9f594791 | 458 | extern void nfs4_schedule_session_recovery(struct nfs4_session *, int); |
3f10a6af | 459 | extern void nfs41_notify_server(struct nfs_client *); |
0400a6b0 | 460 | #else |
9f594791 | 461 | static inline void nfs4_schedule_session_recovery(struct nfs4_session *session, int err) |
0400a6b0 TM |
462 | { |
463 | } | |
a7b72103 | 464 | #endif /* CONFIG_NFS_V4_1 */ |
4ce79717 | 465 | |
a52458b4 | 466 | extern struct nfs4_state_owner *nfs4_get_state_owner(struct nfs_server *, const struct cred *, gfp_t); |
4ce79717 | 467 | extern void nfs4_put_state_owner(struct nfs4_state_owner *); |
c77e2283 TM |
468 | extern void nfs4_purge_state_owners(struct nfs_server *, struct list_head *); |
469 | extern void nfs4_free_state_owners(struct list_head *head); | |
4ce79717 TM |
470 | extern struct nfs4_state * nfs4_get_open_state(struct inode *, struct nfs4_state_owner *); |
471 | extern void nfs4_put_open_state(struct nfs4_state *); | |
643168c2 AV |
472 | extern void nfs4_close_state(struct nfs4_state *, fmode_t); |
473 | extern void nfs4_close_sync(struct nfs4_state *, fmode_t); | |
dc0b027d | 474 | extern void nfs4_state_set_mode_locked(struct nfs4_state *, fmode_t); |
a1d0b5ee TM |
475 | extern void nfs_inode_find_state_and_recover(struct inode *inode, |
476 | const nfs4_stateid *stateid); | |
4f14c194 | 477 | extern int nfs4_state_mark_reclaim_nograce(struct nfs_client *, struct nfs4_state *); |
0400a6b0 | 478 | extern void nfs4_schedule_lease_recovery(struct nfs_client *); |
33021279 TM |
479 | extern int nfs4_wait_clnt_recover(struct nfs_client *clp); |
480 | extern int nfs4_client_recover_expired_lease(struct nfs_client *clp); | |
b0d3ded1 | 481 | extern void nfs4_schedule_state_manager(struct nfs_client *); |
042b60be | 482 | extern void nfs4_schedule_path_down_recovery(struct nfs_client *clp); |
5d422301 | 483 | extern int nfs4_schedule_stateid_recovery(const struct nfs_server *, struct nfs4_state *); |
c9fdeb28 | 484 | extern int nfs4_schedule_migration_recovery(const struct nfs_server *); |
b7f7a66e | 485 | extern void nfs4_schedule_lease_moved_recovery(struct nfs_client *); |
0a014a44 | 486 | extern void nfs41_handle_sequence_flag_errors(struct nfs_client *clp, u32 flags, bool); |
78fe0f41 | 487 | extern void nfs41_handle_server_scope(struct nfs_client *, |
79d4e1f0 | 488 | struct nfs41_server_scope **); |
faf5f49c | 489 | extern void nfs4_put_lock_state(struct nfs4_lock_state *lsp); |
8d0a8a9d | 490 | extern int nfs4_set_lock_state(struct nfs4_state *state, struct file_lock *fl); |
abf4e13c | 491 | extern int nfs4_select_rw_stateid(struct nfs4_state *, fmode_t, |
17393475 | 492 | const struct nfs_lock_context *, nfs4_stateid *, |
a52458b4 | 493 | const struct cred **); |
c82bac6f TM |
494 | extern bool nfs4_copy_open_stateid(nfs4_stateid *dst, |
495 | struct nfs4_state *state); | |
4ce79717 | 496 | |
8535b2be | 497 | extern struct nfs_seqid *nfs_alloc_seqid(struct nfs_seqid_counter *counter, gfp_t gfp_mask); |
cee54fc9 TM |
498 | extern int nfs_wait_on_sequence(struct nfs_seqid *seqid, struct rpc_task *task); |
499 | extern void nfs_increment_open_seqid(int status, struct nfs_seqid *seqid); | |
500 | extern void nfs_increment_lock_seqid(int status, struct nfs_seqid *seqid); | |
72211dbe | 501 | extern void nfs_release_seqid(struct nfs_seqid *seqid); |
cee54fc9 | 502 | extern void nfs_free_seqid(struct nfs_seqid *seqid); |
3be0f80b | 503 | extern int nfs4_setup_sequence(struct nfs_client *client, |
cb04ad2a PT |
504 | struct nfs4_sequence_args *args, |
505 | struct nfs4_sequence_res *res, | |
506 | struct rpc_task *task); | |
2c4b131d PT |
507 | extern int nfs4_sequence_done(struct rpc_task *task, |
508 | struct nfs4_sequence_res *res); | |
cee54fc9 | 509 | |
5ae67c4f | 510 | extern void nfs4_free_lock_state(struct nfs_server *server, struct nfs4_lock_state *lsp); |
6b8d84e2 | 511 | extern int nfs4_proc_commit(struct file *dst, __u64 offset, __u32 count, struct nfs_commitres *res); |
4ce79717 | 512 | extern const nfs4_stateid zero_stateid; |
fcd8843c | 513 | extern const nfs4_stateid invalid_stateid; |
4ce79717 | 514 | |
129d1977 | 515 | /* nfs4super.c */ |
fbdefd64 | 516 | struct nfs_mount_info; |
ab7017a3 | 517 | extern struct nfs_subversion nfs_v4; |
ff9099f2 | 518 | struct dentry *nfs4_try_mount(int, const char *, struct nfs_mount_info *, struct nfs_subversion *); |
fac1e8e4 BS |
519 | extern bool nfs4_disable_idmapping; |
520 | extern unsigned short max_session_slots; | |
5405fc44 | 521 | extern unsigned short max_session_cb_slots; |
fac1e8e4 | 522 | extern unsigned short send_implementation_id; |
f6de7a39 | 523 | extern bool recover_lost_locks; |
89d77c8f | 524 | |
6f2ea7f2 CL |
525 | #define NFS4_CLIENT_ID_UNIQ_LEN (64) |
526 | extern char nfs4_client_id_uniquifier[NFS4_CLIENT_ID_UNIQ_LEN]; | |
527 | ||
466bfe7f BS |
528 | /* nfs4sysctl.c */ |
529 | #ifdef CONFIG_SYSCTL | |
530 | int nfs4_register_sysctl(void); | |
531 | void nfs4_unregister_sysctl(void); | |
532 | #else | |
533 | static inline int nfs4_register_sysctl(void) | |
534 | { | |
535 | return 0; | |
536 | } | |
537 | ||
0add3e85 | 538 | static inline void nfs4_unregister_sysctl(void) |
466bfe7f BS |
539 | { |
540 | } | |
541 | #endif | |
542 | ||
4ce79717 | 543 | /* nfs4xdr.c */ |
499b4988 | 544 | extern const struct rpc_procinfo nfs4_procedures[]; |
4ce79717 TM |
545 | |
546 | struct nfs4_mount_data; | |
547 | ||
548 | /* callback_xdr.c */ | |
e9679189 CH |
549 | extern const struct svc_version nfs4_callback_version1; |
550 | extern const struct svc_version nfs4_callback_version4; | |
4ce79717 | 551 | |
f597c537 TM |
552 | static inline void nfs4_stateid_copy(nfs4_stateid *dst, const nfs4_stateid *src) |
553 | { | |
93b717fd TM |
554 | memcpy(dst->data, src->data, sizeof(dst->data)); |
555 | dst->type = src->type; | |
f597c537 TM |
556 | } |
557 | ||
558 | static inline bool nfs4_stateid_match(const nfs4_stateid *dst, const nfs4_stateid *src) | |
559 | { | |
93b717fd TM |
560 | if (dst->type != src->type) |
561 | return false; | |
562 | return memcmp(dst->data, src->data, sizeof(dst->data)) == 0; | |
f597c537 TM |
563 | } |
564 | ||
e999e80e TM |
565 | static inline bool nfs4_stateid_match_other(const nfs4_stateid *dst, const nfs4_stateid *src) |
566 | { | |
567 | return memcmp(dst->other, src->other, NFS4_STATEID_OTHER_SIZE) == 0; | |
568 | } | |
569 | ||
570 | static inline bool nfs4_stateid_is_newer(const nfs4_stateid *s1, const nfs4_stateid *s2) | |
571 | { | |
572 | return (s32)(be32_to_cpu(s1->seqid) - be32_to_cpu(s2->seqid)) > 0; | |
573 | } | |
574 | ||
92283957 TM |
575 | static inline void nfs4_stateid_seqid_inc(nfs4_stateid *s1) |
576 | { | |
577 | u32 seqid = be32_to_cpu(s1->seqid); | |
578 | ||
579 | if (++seqid == 0) | |
580 | ++seqid; | |
581 | s1->seqid = cpu_to_be32(seqid); | |
582 | } | |
583 | ||
5d422301 TM |
584 | static inline bool nfs4_valid_open_stateid(const struct nfs4_state *state) |
585 | { | |
586 | return test_bit(NFS_STATE_RECOVERY_FAILED, &state->flags) == 0; | |
587 | } | |
588 | ||
3e7dfb16 TM |
589 | static inline bool nfs4_state_match_open_stateid_other(const struct nfs4_state *state, |
590 | const nfs4_stateid *stateid) | |
591 | { | |
592 | return test_bit(NFS_OPEN_STATE, &state->flags) && | |
593 | nfs4_stateid_match_other(&state->open_stateid, stateid); | |
594 | } | |
595 | ||
4ce79717 TM |
596 | #else |
597 | ||
643168c2 AV |
598 | #define nfs4_close_state(a, b) do { } while (0) |
599 | #define nfs4_close_sync(a, b) do { } while (0) | |
8c21c62c WAA |
600 | #define nfs4_state_protect(a, b, c, d) do { } while (0) |
601 | #define nfs4_state_protect_write(a, b, c, d) do { } while (0) | |
4ce79717 TM |
602 | |
603 | #endif /* CONFIG_NFS_V4 */ | |
604 | #endif /* __LINUX_FS_NFS_NFS4_FS.H */ |