Commit | Line | Data |
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1da177e4 | 1 | /* |
1da177e4 LT |
2 | * Copyright (c) 2001 The Regents of the University of Michigan. |
3 | * All rights reserved. | |
4 | * | |
5 | * Kendrick Smith <kmsmith@umich.edu> | |
6 | * Andy Adamson <andros@umich.edu> | |
7 | * | |
8 | * Redistribution and use in source and binary forms, with or without | |
9 | * modification, are permitted provided that the following conditions | |
10 | * are met: | |
11 | * | |
12 | * 1. Redistributions of source code must retain the above copyright | |
13 | * notice, this list of conditions and the following disclaimer. | |
14 | * 2. Redistributions in binary form must reproduce the above copyright | |
15 | * notice, this list of conditions and the following disclaimer in the | |
16 | * documentation and/or other materials provided with the distribution. | |
17 | * 3. Neither the name of the University nor the names of its | |
18 | * contributors may be used to endorse or promote products derived | |
19 | * from this software without specific prior written permission. | |
20 | * | |
21 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
22 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
23 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
24 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
26 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
27 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
28 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
29 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
30 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
31 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
32 | * | |
33 | */ | |
34 | ||
35 | #ifndef _NFSD4_STATE_H | |
36 | #define _NFSD4_STATE_H | |
37 | ||
19cf5c02 | 38 | #include <linux/sunrpc/svc_xprt.h> |
72579ac9 | 39 | #include <linux/nfsd/nfsfh.h> |
1557aca7 | 40 | #include "nfsfh.h" |
1da177e4 | 41 | |
1da177e4 LT |
42 | typedef struct { |
43 | u32 cl_boot; | |
44 | u32 cl_id; | |
45 | } clientid_t; | |
46 | ||
47 | typedef struct { | |
48 | u32 so_boot; | |
49 | u32 so_stateownerid; | |
50 | u32 so_fileid; | |
51 | } stateid_opaque_t; | |
52 | ||
53 | typedef struct { | |
54 | u32 si_generation; | |
55 | stateid_opaque_t si_opaque; | |
56 | } stateid_t; | |
57 | #define si_boot si_opaque.so_boot | |
58 | #define si_stateownerid si_opaque.so_stateownerid | |
59 | #define si_fileid si_opaque.so_fileid | |
60 | ||
8c10cbdb BH |
61 | #define STATEID_FMT "(%08x/%08x/%08x/%08x)" |
62 | #define STATEID_VAL(s) \ | |
63 | (s)->si_boot, \ | |
64 | (s)->si_stateownerid, \ | |
65 | (s)->si_fileid, \ | |
66 | (s)->si_generation | |
67 | ||
227f98d9 | 68 | struct nfsd4_callback { |
fb003923 BF |
69 | void *cb_op; |
70 | struct nfs4_client *cb_clp; | |
5ce8ba25 | 71 | struct list_head cb_per_client; |
fb003923 | 72 | u32 cb_minorversion; |
5878453d BF |
73 | struct rpc_message cb_msg; |
74 | const struct rpc_call_ops *cb_ops; | |
b5a1a81e | 75 | struct work_struct cb_work; |
5ce8ba25 | 76 | bool cb_done; |
227f98d9 BF |
77 | }; |
78 | ||
1da177e4 | 79 | struct nfs4_delegation { |
ea1da636 N |
80 | struct list_head dl_perfile; |
81 | struct list_head dl_perclnt; | |
1da177e4 LT |
82 | struct list_head dl_recall_lru; /* delegation recalled */ |
83 | atomic_t dl_count; /* ref count */ | |
84 | struct nfs4_client *dl_client; | |
85 | struct nfs4_file *dl_file; | |
1da177e4 LT |
86 | u32 dl_type; |
87 | time_t dl_time; | |
b53d40c5 | 88 | /* For recall: */ |
b53d40c5 BF |
89 | stateid_t dl_stateid; |
90 | struct knfsd_fh dl_fh; | |
3aea09dc | 91 | int dl_retries; |
227f98d9 | 92 | struct nfsd4_callback dl_recall; |
1da177e4 LT |
93 | }; |
94 | ||
1da177e4 | 95 | /* client delegation callback info */ |
c237dc03 | 96 | struct nfs4_cb_conn { |
1da177e4 | 97 | /* SETCLIENTID info */ |
aa9a4ec7 | 98 | struct sockaddr_storage cb_addr; |
6f3d772f | 99 | struct sockaddr_storage cb_saddr; |
aa9a4ec7 | 100 | size_t cb_addrlen; |
8b5ce5cd BF |
101 | u32 cb_prog; /* used only in 4.0 case; |
102 | per-session otherwise */ | |
ab52ae6d | 103 | u32 cb_ident; /* minorversion 0 only */ |
2bf23875 | 104 | struct svc_xprt *cb_xprt; /* minorversion 1 only */ |
1da177e4 LT |
105 | }; |
106 | ||
a649637c AA |
107 | /* Maximum number of slots per session. 160 is useful for long haul TCP */ |
108 | #define NFSD_MAX_SLOTS_PER_SESSION 160 | |
ec6b5d7b AA |
109 | /* Maximum number of operations per session compound */ |
110 | #define NFSD_MAX_OPS_PER_COMPOUND 16 | |
557ce264 AA |
111 | /* Maximum session per slot cache size */ |
112 | #define NFSD_SLOT_CACHE_SIZE 1024 | |
a649637c AA |
113 | /* Maximum number of NFSD_SLOT_CACHE_SIZE slots per session */ |
114 | #define NFSD_CACHE_SIZE_SLOTS_PER_SESSION 32 | |
115 | #define NFSD_MAX_MEM_PER_SESSION \ | |
116 | (NFSD_CACHE_SIZE_SLOTS_PER_SESSION * NFSD_SLOT_CACHE_SIZE) | |
074fe897 | 117 | |
7116ed6b | 118 | struct nfsd4_slot { |
557ce264 AA |
119 | bool sl_inuse; |
120 | bool sl_cachethis; | |
121 | u16 sl_opcnt; | |
122 | u32 sl_seqid; | |
123 | __be32 sl_status; | |
124 | u32 sl_datalen; | |
125 | char sl_data[]; | |
7116ed6b AA |
126 | }; |
127 | ||
6c18ba9f AB |
128 | struct nfsd4_channel_attrs { |
129 | u32 headerpadsz; | |
130 | u32 maxreq_sz; | |
131 | u32 maxresp_sz; | |
132 | u32 maxresp_cached; | |
133 | u32 maxops; | |
134 | u32 maxreqs; | |
135 | u32 nr_rdma_attrs; | |
136 | u32 rdma_attrs; | |
137 | }; | |
138 | ||
49557cc7 AA |
139 | struct nfsd4_create_session { |
140 | clientid_t clientid; | |
141 | struct nfs4_sessionid sessionid; | |
142 | u32 seqid; | |
143 | u32 flags; | |
144 | struct nfsd4_channel_attrs fore_channel; | |
145 | struct nfsd4_channel_attrs back_channel; | |
146 | u32 callback_prog; | |
147 | u32 uid; | |
148 | u32 gid; | |
149 | }; | |
150 | ||
1d1bc8f2 BF |
151 | struct nfsd4_bind_conn_to_session { |
152 | struct nfs4_sessionid sessionid; | |
153 | u32 dir; | |
154 | }; | |
155 | ||
49557cc7 AA |
156 | /* The single slot clientid cache structure */ |
157 | struct nfsd4_clid_slot { | |
158 | u32 sl_seqid; | |
159 | __be32 sl_status; | |
160 | struct nfsd4_create_session sl_cr_ses; | |
161 | }; | |
162 | ||
c7662518 BF |
163 | struct nfsd4_conn { |
164 | struct list_head cn_persession; | |
165 | struct svc_xprt *cn_xprt; | |
19cf5c02 BF |
166 | struct svc_xpt_user cn_xpt_user; |
167 | struct nfsd4_session *cn_session; | |
c7662518 BF |
168 | /* CDFC4_FORE, CDFC4_BACK: */ |
169 | unsigned char cn_flags; | |
170 | }; | |
171 | ||
7116ed6b AA |
172 | struct nfsd4_session { |
173 | struct kref se_ref; | |
174 | struct list_head se_hash; /* hash by sessionid */ | |
175 | struct list_head se_perclnt; | |
176 | u32 se_flags; | |
07cd4909 | 177 | struct nfs4_client *se_client; |
7116ed6b | 178 | struct nfs4_sessionid se_sessionid; |
6c18ba9f AB |
179 | struct nfsd4_channel_attrs se_fchannel; |
180 | struct nfsd4_channel_attrs se_bchannel; | |
c7662518 | 181 | struct list_head se_conns; |
8b5ce5cd | 182 | u32 se_cb_prog; |
ac7c46f2 | 183 | u32 se_cb_seq_nr; |
557ce264 | 184 | struct nfsd4_slot *se_slots[]; /* forward channel slots */ |
7116ed6b AA |
185 | }; |
186 | ||
187 | static inline void | |
188 | nfsd4_put_session(struct nfsd4_session *ses) | |
189 | { | |
190 | extern void free_session(struct kref *kref); | |
191 | kref_put(&ses->se_ref, free_session); | |
192 | } | |
193 | ||
194 | static inline void | |
195 | nfsd4_get_session(struct nfsd4_session *ses) | |
196 | { | |
197 | kref_get(&ses->se_ref); | |
198 | } | |
199 | ||
5282fd72 ME |
200 | /* formatted contents of nfs4_sessionid */ |
201 | struct nfsd4_sessionid { | |
202 | clientid_t clientid; | |
203 | u32 sequence; | |
204 | u32 reserved; | |
205 | }; | |
206 | ||
a55370a3 N |
207 | #define HEXDIR_LEN 33 /* hex version of 16 byte md5 of cl_name plus '\0' */ |
208 | ||
1da177e4 LT |
209 | /* |
210 | * struct nfs4_client - one per client. Clientids live here. | |
211 | * o Each nfs4_client is hashed by clientid. | |
212 | * | |
213 | * o Each nfs4_clients is also hashed by name | |
214 | * (the opaque quantity initially sent by the client to identify itself). | |
215 | * | |
216 | * o cl_perclient list is used to ensure no dangling stateowner references | |
217 | * when we expire the nfs4_client | |
218 | */ | |
219 | struct nfs4_client { | |
220 | struct list_head cl_idhash; /* hash by cl_clientid.id */ | |
221 | struct list_head cl_strhash; /* hash by cl_name */ | |
ea1da636 N |
222 | struct list_head cl_openowners; |
223 | struct list_head cl_delegations; | |
1da177e4 LT |
224 | struct list_head cl_lru; /* tail queue */ |
225 | struct xdr_netobj cl_name; /* id generated by client */ | |
a55370a3 | 226 | char cl_recdir[HEXDIR_LEN]; /* recovery dir */ |
1da177e4 LT |
227 | nfs4_verifier cl_verifier; /* generated by client */ |
228 | time_t cl_time; /* time of last lease renewal */ | |
363168b4 | 229 | struct sockaddr_storage cl_addr; /* client ipaddress */ |
61054b14 | 230 | u32 cl_flavor; /* setclientid pseudoflavor */ |
68e76ad0 | 231 | char *cl_principal; /* setclientid principal name */ |
1da177e4 LT |
232 | struct svc_cred cl_cred; /* setclientid principal */ |
233 | clientid_t cl_clientid; /* generated by server */ | |
234 | nfs4_verifier cl_confirm; /* generated by server */ | |
c7b9a459 | 235 | u32 cl_firststate; /* recovery dir creation */ |
8323c3b2 | 236 | u32 cl_minorversion; |
9fb87070 | 237 | |
2bf23875 BF |
238 | /* for v4.0 and v4.1 callbacks: */ |
239 | struct nfs4_cb_conn cl_cb_conn; | |
6ff8da08 BF |
240 | #define NFSD4_CLIENT_CB_UPDATE 1 |
241 | #define NFSD4_CLIENT_KILL 2 | |
242 | unsigned long cl_cb_flags; | |
2bf23875 | 243 | struct rpc_clnt *cl_cb_client; |
6ff8da08 | 244 | u32 cl_cb_ident; |
77a3569d BF |
245 | #define NFSD4_CB_UP 0 |
246 | #define NFSD4_CB_UNKNOWN 1 | |
247 | #define NFSD4_CB_DOWN 2 | |
248 | int cl_cb_state; | |
cee277d9 | 249 | struct nfsd4_callback cl_cb_null; |
edd76786 | 250 | struct nfsd4_session *cl_cb_session; |
5ce8ba25 | 251 | struct list_head cl_callbacks; /* list of in-progress callbacks */ |
2bf23875 | 252 | |
6ff8da08 BF |
253 | /* for all client information that callback code might need: */ |
254 | spinlock_t cl_lock; | |
255 | ||
9fb87070 ME |
256 | /* for nfs41 */ |
257 | struct list_head cl_sessions; | |
49557cc7 | 258 | struct nfsd4_clid_slot cl_cs_slot; /* create_session slot */ |
0733d213 | 259 | u32 cl_exchange_flags; |
46583e25 BH |
260 | /* number of rpc's in progress over an associated session: */ |
261 | atomic_t cl_refcount; | |
38524ab3 AA |
262 | |
263 | /* for nfs41 callbacks */ | |
199ff35e RL |
264 | /* We currently support a single back channel with a single slot */ |
265 | unsigned long cl_cb_slot_busy; | |
199ff35e RL |
266 | struct rpc_wait_queue cl_cb_waitq; /* backchannel callers may */ |
267 | /* wait here for slots */ | |
1da177e4 LT |
268 | }; |
269 | ||
07cd4909 BH |
270 | static inline void |
271 | mark_client_expired(struct nfs4_client *clp) | |
272 | { | |
273 | clp->cl_time = 0; | |
274 | } | |
275 | ||
276 | static inline bool | |
277 | is_client_expired(struct nfs4_client *clp) | |
278 | { | |
279 | return clp->cl_time == 0; | |
280 | } | |
281 | ||
1da177e4 LT |
282 | /* struct nfs4_client_reset |
283 | * one per old client. Populates reset_str_hashtbl. Filled from conf_id_hashtbl | |
284 | * upon lease reset, or from upcall to state_daemon (to read in state | |
285 | * from non-volitile storage) upon reboot. | |
286 | */ | |
287 | struct nfs4_client_reclaim { | |
288 | struct list_head cr_strhash; /* hash by cr_name */ | |
a55370a3 | 289 | char cr_recdir[HEXDIR_LEN]; /* recover dir */ |
1da177e4 LT |
290 | }; |
291 | ||
292 | static inline void | |
293 | update_stateid(stateid_t *stateid) | |
294 | { | |
295 | stateid->si_generation++; | |
296 | } | |
297 | ||
298 | /* A reasonable value for REPLAY_ISIZE was estimated as follows: | |
299 | * The OPEN response, typically the largest, requires | |
300 | * 4(status) + 8(stateid) + 20(changeinfo) + 4(rflags) + 8(verifier) + | |
301 | * 4(deleg. type) + 8(deleg. stateid) + 4(deleg. recall flag) + | |
302 | * 20(deleg. space limit) + ~32(deleg. ace) = 112 bytes | |
303 | */ | |
304 | ||
305 | #define NFSD4_REPLAY_ISIZE 112 | |
306 | ||
307 | /* | |
308 | * Replay buffer, where the result of the last seqid-mutating operation | |
309 | * is cached. | |
310 | */ | |
311 | struct nfs4_replay { | |
b37ad28b | 312 | __be32 rp_status; |
1da177e4 LT |
313 | unsigned int rp_buflen; |
314 | char *rp_buf; | |
315 | unsigned intrp_allocated; | |
a4773c08 | 316 | struct knfsd_fh rp_openfh; |
1da177e4 LT |
317 | char rp_ibuf[NFSD4_REPLAY_ISIZE]; |
318 | }; | |
319 | ||
320 | /* | |
321 | * nfs4_stateowner can either be an open_owner, or a lock_owner | |
322 | * | |
323 | * so_idhash: stateid_hashtbl[] for open owner, lockstateid_hashtbl[] | |
324 | * for lock_owner | |
325 | * so_strhash: ownerstr_hashtbl[] for open_owner, lock_ownerstr_hashtbl[] | |
326 | * for lock_owner | |
327 | * so_perclient: nfs4_client->cl_perclient entry - used when nfs4_client | |
328 | * struct is reaped. | |
329 | * so_perfilestate: heads the list of nfs4_stateid (either open or lock) | |
330 | * and is used to ensure no dangling nfs4_stateid references when we | |
331 | * release a stateowner. | |
332 | * so_perlockowner: (open) nfs4_stateid->st_perlockowner entry - used when | |
333 | * close is called to reap associated byte-range locks | |
334 | * so_close_lru: (open) stateowner is placed on this list instead of being | |
335 | * reaped (when so_perfilestate is empty) to hold the last close replay. | |
336 | * reaped by laundramat thread after lease period. | |
337 | */ | |
338 | struct nfs4_stateowner { | |
339 | struct kref so_ref; | |
340 | struct list_head so_idhash; /* hash by so_id */ | |
341 | struct list_head so_strhash; /* hash by op_name */ | |
ea1da636 N |
342 | struct list_head so_perclient; |
343 | struct list_head so_stateids; | |
344 | struct list_head so_perstateid; /* for lockowners only */ | |
1da177e4 LT |
345 | struct list_head so_close_lru; /* tail queue */ |
346 | time_t so_time; /* time of placement on so_close_lru */ | |
347 | int so_is_open_owner; /* 1=openowner,0=lockowner */ | |
348 | u32 so_id; | |
349 | struct nfs4_client * so_client; | |
7fb64cee N |
350 | /* after increment in ENCODE_SEQID_OP_TAIL, represents the next |
351 | * sequence id expected from the client: */ | |
352 | u32 so_seqid; | |
1da177e4 LT |
353 | struct xdr_netobj so_owner; /* open owner name */ |
354 | int so_confirmed; /* successful OPEN_CONFIRM? */ | |
355 | struct nfs4_replay so_replay; | |
356 | }; | |
357 | ||
358 | /* | |
359 | * nfs4_file: a file opened by some number of (open) nfs4_stateowners. | |
360 | * o fi_perfile list is used to search for conflicting | |
361 | * share_acces, share_deny on the file. | |
362 | */ | |
363 | struct nfs4_file { | |
8b671b80 | 364 | atomic_t fi_ref; |
1da177e4 | 365 | struct list_head fi_hash; /* hash by "struct inode *" */ |
8beefa24 N |
366 | struct list_head fi_stateids; |
367 | struct list_head fi_delegations; | |
f9d7562f BF |
368 | /* One each for O_RDONLY, O_WRONLY, O_RDWR: */ |
369 | struct file * fi_fds[3]; | |
f9d7562f | 370 | /* |
9ae78bcc BF |
371 | * Each open or lock stateid contributes 1 to either |
372 | * fi_access[O_RDONLY], fi_access[O_WRONLY], or both, depending | |
373 | * on open or lock mode: | |
f9d7562f | 374 | */ |
9ae78bcc | 375 | atomic_t fi_access[2]; |
acfdf5c3 BF |
376 | struct file *fi_deleg_file; |
377 | struct file_lock *fi_lease; | |
378 | atomic_t fi_delegees; | |
1da177e4 LT |
379 | struct inode *fi_inode; |
380 | u32 fi_id; /* used with stateowner->so_id | |
381 | * for stateid_hashtbl hash */ | |
47f9940c | 382 | bool fi_had_conflict; |
1da177e4 LT |
383 | }; |
384 | ||
f9d7562f BF |
385 | /* XXX: for first cut may fall back on returning file that doesn't work |
386 | * at all? */ | |
387 | static inline struct file *find_writeable_file(struct nfs4_file *f) | |
388 | { | |
7d947842 BF |
389 | if (f->fi_fds[O_WRONLY]) |
390 | return f->fi_fds[O_WRONLY]; | |
391 | return f->fi_fds[O_RDWR]; | |
f9d7562f BF |
392 | } |
393 | ||
394 | static inline struct file *find_readable_file(struct nfs4_file *f) | |
395 | { | |
7d947842 BF |
396 | if (f->fi_fds[O_RDONLY]) |
397 | return f->fi_fds[O_RDONLY]; | |
398 | return f->fi_fds[O_RDWR]; | |
f9d7562f BF |
399 | } |
400 | ||
401 | static inline struct file *find_any_file(struct nfs4_file *f) | |
402 | { | |
403 | if (f->fi_fds[O_RDWR]) | |
404 | return f->fi_fds[O_RDWR]; | |
18608ad4 | 405 | else if (f->fi_fds[O_WRONLY]) |
f9d7562f BF |
406 | return f->fi_fds[O_WRONLY]; |
407 | else | |
408 | return f->fi_fds[O_RDONLY]; | |
409 | } | |
410 | ||
1da177e4 LT |
411 | /* |
412 | * nfs4_stateid can either be an open stateid or (eventually) a lock stateid | |
413 | * | |
414 | * (open)nfs4_stateid: one per (open)nfs4_stateowner, nfs4_file | |
415 | * | |
416 | * st_hash: stateid_hashtbl[] entry or lockstateid_hashtbl entry | |
417 | * st_perfile: file_hashtbl[] entry. | |
418 | * st_perfile_state: nfs4_stateowner->so_perfilestate | |
419 | * st_perlockowner: (open stateid) list of lock nfs4_stateowners | |
420 | * st_access_bmap: used only for open stateid | |
421 | * st_deny_bmap: used only for open stateid | |
4c4cd222 N |
422 | * st_openstp: open stateid lock stateid was derived from |
423 | * | |
424 | * XXX: open stateids and lock stateids have diverged sufficiently that | |
425 | * we should consider defining separate structs for the two cases. | |
1da177e4 LT |
426 | */ |
427 | ||
428 | struct nfs4_stateid { | |
429 | struct list_head st_hash; | |
430 | struct list_head st_perfile; | |
ea1da636 N |
431 | struct list_head st_perstateowner; |
432 | struct list_head st_lockowners; | |
1da177e4 LT |
433 | struct nfs4_stateowner * st_stateowner; |
434 | struct nfs4_file * st_file; | |
435 | stateid_t st_stateid; | |
1da177e4 LT |
436 | unsigned long st_access_bmap; |
437 | unsigned long st_deny_bmap; | |
4c4cd222 | 438 | struct nfs4_stateid * st_openstp; |
1da177e4 LT |
439 | }; |
440 | ||
441 | /* flags for preprocess_seqid_op() */ | |
6668958f | 442 | #define HAS_SESSION 0x00000001 |
1da177e4 LT |
443 | #define CONFIRM 0x00000002 |
444 | #define OPEN_STATE 0x00000004 | |
445 | #define LOCK_STATE 0x00000008 | |
446 | #define RD_STATE 0x00000010 | |
447 | #define WR_STATE 0x00000020 | |
448 | #define CLOSE_STATE 0x00000040 | |
1da177e4 LT |
449 | |
450 | #define seqid_mutating_err(err) \ | |
451 | (((err) != nfserr_stale_clientid) && \ | |
452 | ((err) != nfserr_bad_seqid) && \ | |
453 | ((err) != nfserr_stale_stateid) && \ | |
454 | ((err) != nfserr_bad_stateid)) | |
455 | ||
dd453dfd BH |
456 | struct nfsd4_compound_state; |
457 | ||
458 | extern __be32 nfs4_preprocess_stateid_op(struct nfsd4_compound_state *cstate, | |
1da177e4 | 459 | stateid_t *stateid, int flags, struct file **filp); |
1da177e4 LT |
460 | extern void nfs4_lock_state(void); |
461 | extern void nfs4_unlock_state(void); | |
462 | extern int nfs4_in_grace(void); | |
b37ad28b | 463 | extern __be32 nfs4_check_open_reclaim(clientid_t *clid); |
1da177e4 | 464 | extern void nfs4_free_stateowner(struct kref *kref); |
80fc015b | 465 | extern int set_callback_cred(void); |
5a3c9d71 | 466 | extern void nfsd4_probe_callback(struct nfs4_client *clp); |
84f5f7cc | 467 | extern void nfsd4_probe_callback_sync(struct nfs4_client *clp); |
5a3c9d71 | 468 | extern void nfsd4_change_callback(struct nfs4_client *clp, struct nfs4_cb_conn *); |
b5a1a81e | 469 | extern void nfsd4_do_callback_rpc(struct work_struct *); |
1da177e4 | 470 | extern void nfsd4_cb_recall(struct nfs4_delegation *dp); |
b5a1a81e BF |
471 | extern int nfsd4_create_callback_queue(void); |
472 | extern void nfsd4_destroy_callback_queue(void); | |
6ff8da08 | 473 | extern void nfsd4_shutdown_callback(struct nfs4_client *); |
1da177e4 | 474 | extern void nfs4_put_delegation(struct nfs4_delegation *dp); |
b37ad28b | 475 | extern __be32 nfs4_make_rec_clidname(char *clidname, struct xdr_netobj *clname); |
190e4fbf N |
476 | extern void nfsd4_init_recdir(char *recdir_name); |
477 | extern int nfsd4_recdir_load(void); | |
478 | extern void nfsd4_shutdown_recdir(void); | |
479 | extern int nfs4_client_to_reclaim(const char *name); | |
a1bcecd2 | 480 | extern int nfs4_has_reclaimed_state(const char *name, bool use_exchange_id); |
c7b9a459 N |
481 | extern void nfsd4_recdir_purge_old(void); |
482 | extern int nfsd4_create_clid_dir(struct nfs4_client *clp); | |
483 | extern void nfsd4_remove_clid_dir(struct nfs4_client *clp); | |
d7682988 | 484 | extern void release_session_client(struct nfsd4_session *); |
17456804 | 485 | extern __be32 nfs4_validate_stateid(stateid_t *, int); |
1da177e4 LT |
486 | |
487 | static inline void | |
488 | nfs4_put_stateowner(struct nfs4_stateowner *so) | |
489 | { | |
490 | kref_put(&so->so_ref, nfs4_free_stateowner); | |
491 | } | |
492 | ||
493 | static inline void | |
494 | nfs4_get_stateowner(struct nfs4_stateowner *so) | |
495 | { | |
496 | kref_get(&so->so_ref); | |
497 | } | |
498 | ||
499 | #endif /* NFSD4_STATE_H */ |