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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 | ||
38c2f4b1 | 38 | #include <linux/idr.h> |
19cf5c02 | 39 | #include <linux/sunrpc/svc_xprt.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 { | |
d3b313a4 BF |
48 | clientid_t so_clid; |
49 | u32 so_id; | |
1da177e4 LT |
50 | } stateid_opaque_t; |
51 | ||
52 | typedef struct { | |
53 | u32 si_generation; | |
54 | stateid_opaque_t si_opaque; | |
55 | } stateid_t; | |
1da177e4 | 56 | |
8c10cbdb BH |
57 | #define STATEID_FMT "(%08x/%08x/%08x/%08x)" |
58 | #define STATEID_VAL(s) \ | |
d3b313a4 BF |
59 | (s)->si_opaque.so_clid.cl_boot, \ |
60 | (s)->si_opaque.so_clid.cl_id, \ | |
61 | (s)->si_opaque.so_id, \ | |
8c10cbdb BH |
62 | (s)->si_generation |
63 | ||
227f98d9 | 64 | struct nfsd4_callback { |
fb003923 BF |
65 | void *cb_op; |
66 | struct nfs4_client *cb_clp; | |
5ce8ba25 | 67 | struct list_head cb_per_client; |
fb003923 | 68 | u32 cb_minorversion; |
5878453d BF |
69 | struct rpc_message cb_msg; |
70 | const struct rpc_call_ops *cb_ops; | |
b5a1a81e | 71 | struct work_struct cb_work; |
5ce8ba25 | 72 | bool cb_done; |
227f98d9 BF |
73 | }; |
74 | ||
d5477a8d | 75 | struct nfs4_stid { |
72c0b0fb | 76 | atomic_t sc_count; |
d5477a8d BF |
77 | #define NFS4_OPEN_STID 1 |
78 | #define NFS4_LOCK_STID 2 | |
79 | #define NFS4_DELEG_STID 4 | |
f7a4d872 BF |
80 | /* For an open stateid kept around *only* to process close replays: */ |
81 | #define NFS4_CLOSED_STID 8 | |
3bd64a5b BF |
82 | /* For a deleg stateid kept around only to process free_stateid's: */ |
83 | #define NFS4_REVOKED_DELEG_STID 16 | |
b0fc29d6 | 84 | #define NFS4_CLOSED_DELEG_STID 32 |
f7a4d872 | 85 | unsigned char sc_type; |
d5477a8d | 86 | stateid_t sc_stateid; |
2a74aba7 | 87 | struct nfs4_client *sc_client; |
11b9164a | 88 | struct nfs4_file *sc_file; |
6011695d | 89 | void (*sc_free)(struct nfs4_stid *); |
d5477a8d BF |
90 | }; |
91 | ||
1da177e4 | 92 | struct nfs4_delegation { |
996e0938 | 93 | struct nfs4_stid dl_stid; /* must be first field */ |
ea1da636 N |
94 | struct list_head dl_perfile; |
95 | struct list_head dl_perclnt; | |
1da177e4 | 96 | struct list_head dl_recall_lru; /* delegation recalled */ |
1da177e4 LT |
97 | u32 dl_type; |
98 | time_t dl_time; | |
b53d40c5 | 99 | /* For recall: */ |
3aea09dc | 100 | int dl_retries; |
227f98d9 | 101 | struct nfsd4_callback dl_recall; |
1da177e4 LT |
102 | }; |
103 | ||
1da177e4 | 104 | /* client delegation callback info */ |
c237dc03 | 105 | struct nfs4_cb_conn { |
1da177e4 | 106 | /* SETCLIENTID info */ |
aa9a4ec7 | 107 | struct sockaddr_storage cb_addr; |
6f3d772f | 108 | struct sockaddr_storage cb_saddr; |
aa9a4ec7 | 109 | size_t cb_addrlen; |
8b5ce5cd BF |
110 | u32 cb_prog; /* used only in 4.0 case; |
111 | per-session otherwise */ | |
ab52ae6d | 112 | u32 cb_ident; /* minorversion 0 only */ |
2bf23875 | 113 | struct svc_xprt *cb_xprt; /* minorversion 1 only */ |
1da177e4 LT |
114 | }; |
115 | ||
f459e453 BF |
116 | static inline struct nfs4_delegation *delegstateid(struct nfs4_stid *s) |
117 | { | |
118 | return container_of(s, struct nfs4_delegation, dl_stid); | |
119 | } | |
120 | ||
a649637c AA |
121 | /* Maximum number of slots per session. 160 is useful for long haul TCP */ |
122 | #define NFSD_MAX_SLOTS_PER_SESSION 160 | |
ec6b5d7b AA |
123 | /* Maximum number of operations per session compound */ |
124 | #define NFSD_MAX_OPS_PER_COMPOUND 16 | |
557ce264 | 125 | /* Maximum session per slot cache size */ |
24906f32 | 126 | #define NFSD_SLOT_CACHE_SIZE 2048 |
a649637c AA |
127 | /* Maximum number of NFSD_SLOT_CACHE_SIZE slots per session */ |
128 | #define NFSD_CACHE_SIZE_SLOTS_PER_SESSION 32 | |
129 | #define NFSD_MAX_MEM_PER_SESSION \ | |
130 | (NFSD_CACHE_SIZE_SLOTS_PER_SESSION * NFSD_SLOT_CACHE_SIZE) | |
074fe897 | 131 | |
7116ed6b | 132 | struct nfsd4_slot { |
557ce264 AA |
133 | u32 sl_seqid; |
134 | __be32 sl_status; | |
135 | u32 sl_datalen; | |
73e79482 BF |
136 | u16 sl_opcnt; |
137 | #define NFSD4_SLOT_INUSE (1 << 0) | |
138 | #define NFSD4_SLOT_CACHETHIS (1 << 1) | |
bf5c43c8 | 139 | #define NFSD4_SLOT_INITIALIZED (1 << 2) |
73e79482 | 140 | u8 sl_flags; |
557ce264 | 141 | char sl_data[]; |
7116ed6b AA |
142 | }; |
143 | ||
6c18ba9f AB |
144 | struct nfsd4_channel_attrs { |
145 | u32 headerpadsz; | |
146 | u32 maxreq_sz; | |
147 | u32 maxresp_sz; | |
148 | u32 maxresp_cached; | |
149 | u32 maxops; | |
150 | u32 maxreqs; | |
151 | u32 nr_rdma_attrs; | |
152 | u32 rdma_attrs; | |
153 | }; | |
154 | ||
acb2887e | 155 | struct nfsd4_cb_sec { |
12fc3e92 | 156 | u32 flavor; /* (u32)(-1) used to mean "no valid flavor" */ |
03bc6d1c EB |
157 | kuid_t uid; |
158 | kgid_t gid; | |
acb2887e BF |
159 | }; |
160 | ||
49557cc7 AA |
161 | struct nfsd4_create_session { |
162 | clientid_t clientid; | |
163 | struct nfs4_sessionid sessionid; | |
164 | u32 seqid; | |
165 | u32 flags; | |
166 | struct nfsd4_channel_attrs fore_channel; | |
167 | struct nfsd4_channel_attrs back_channel; | |
168 | u32 callback_prog; | |
acb2887e | 169 | struct nfsd4_cb_sec cb_sec; |
49557cc7 AA |
170 | }; |
171 | ||
cb73a9f4 BF |
172 | struct nfsd4_backchannel_ctl { |
173 | u32 bc_cb_program; | |
174 | struct nfsd4_cb_sec bc_cb_sec; | |
175 | }; | |
176 | ||
1d1bc8f2 BF |
177 | struct nfsd4_bind_conn_to_session { |
178 | struct nfs4_sessionid sessionid; | |
179 | u32 dir; | |
180 | }; | |
181 | ||
49557cc7 AA |
182 | /* The single slot clientid cache structure */ |
183 | struct nfsd4_clid_slot { | |
184 | u32 sl_seqid; | |
185 | __be32 sl_status; | |
186 | struct nfsd4_create_session sl_cr_ses; | |
187 | }; | |
188 | ||
c7662518 BF |
189 | struct nfsd4_conn { |
190 | struct list_head cn_persession; | |
191 | struct svc_xprt *cn_xprt; | |
19cf5c02 BF |
192 | struct svc_xpt_user cn_xpt_user; |
193 | struct nfsd4_session *cn_session; | |
c7662518 BF |
194 | /* CDFC4_FORE, CDFC4_BACK: */ |
195 | unsigned char cn_flags; | |
196 | }; | |
197 | ||
7116ed6b | 198 | struct nfsd4_session { |
66b2b9b2 | 199 | atomic_t se_ref; |
7116ed6b AA |
200 | struct list_head se_hash; /* hash by sessionid */ |
201 | struct list_head se_perclnt; | |
66b2b9b2 BF |
202 | /* See SESSION4_PERSIST, etc. for standard flags; this is internal-only: */ |
203 | #define NFS4_SESSION_DEAD 0x010 | |
7116ed6b | 204 | u32 se_flags; |
07cd4909 | 205 | struct nfs4_client *se_client; |
7116ed6b | 206 | struct nfs4_sessionid se_sessionid; |
6c18ba9f AB |
207 | struct nfsd4_channel_attrs se_fchannel; |
208 | struct nfsd4_channel_attrs se_bchannel; | |
acb2887e | 209 | struct nfsd4_cb_sec se_cb_sec; |
c7662518 | 210 | struct list_head se_conns; |
8b5ce5cd | 211 | u32 se_cb_prog; |
ac7c46f2 | 212 | u32 se_cb_seq_nr; |
557ce264 | 213 | struct nfsd4_slot *se_slots[]; /* forward channel slots */ |
7116ed6b AA |
214 | }; |
215 | ||
5282fd72 ME |
216 | /* formatted contents of nfs4_sessionid */ |
217 | struct nfsd4_sessionid { | |
218 | clientid_t clientid; | |
219 | u32 sequence; | |
220 | u32 reserved; | |
221 | }; | |
222 | ||
a55370a3 N |
223 | #define HEXDIR_LEN 33 /* hex version of 16 byte md5 of cl_name plus '\0' */ |
224 | ||
1da177e4 LT |
225 | /* |
226 | * struct nfs4_client - one per client. Clientids live here. | |
227 | * o Each nfs4_client is hashed by clientid. | |
228 | * | |
229 | * o Each nfs4_clients is also hashed by name | |
230 | * (the opaque quantity initially sent by the client to identify itself). | |
231 | * | |
232 | * o cl_perclient list is used to ensure no dangling stateowner references | |
233 | * when we expire the nfs4_client | |
234 | */ | |
235 | struct nfs4_client { | |
236 | struct list_head cl_idhash; /* hash by cl_clientid.id */ | |
ac55fdc4 | 237 | struct rb_node cl_namenode; /* link into by-name trees */ |
ea1da636 | 238 | struct list_head cl_openowners; |
38c2f4b1 | 239 | struct idr cl_stateids; /* stateid lookup */ |
ea1da636 | 240 | struct list_head cl_delegations; |
3bd64a5b | 241 | struct list_head cl_revoked; /* unacknowledged, revoked 4.1 state */ |
1da177e4 LT |
242 | struct list_head cl_lru; /* tail queue */ |
243 | struct xdr_netobj cl_name; /* id generated by client */ | |
244 | nfs4_verifier cl_verifier; /* generated by client */ | |
245 | time_t cl_time; /* time of last lease renewal */ | |
363168b4 | 246 | struct sockaddr_storage cl_addr; /* client ipaddress */ |
57266a6e | 247 | bool cl_mach_cred; /* SP4_MACH_CRED in force */ |
1da177e4 LT |
248 | struct svc_cred cl_cred; /* setclientid principal */ |
249 | clientid_t cl_clientid; /* generated by server */ | |
250 | nfs4_verifier cl_confirm; /* generated by server */ | |
8323c3b2 | 251 | u32 cl_minorversion; |
9fb87070 | 252 | |
2bf23875 BF |
253 | /* for v4.0 and v4.1 callbacks: */ |
254 | struct nfs4_cb_conn cl_cb_conn; | |
a52d726b JL |
255 | #define NFSD4_CLIENT_CB_UPDATE (0) |
256 | #define NFSD4_CLIENT_CB_KILL (1) | |
257 | #define NFSD4_CLIENT_STABLE (2) /* client on stable storage */ | |
258 | #define NFSD4_CLIENT_RECLAIM_COMPLETE (3) /* reclaim_complete done */ | |
ac55fdc4 | 259 | #define NFSD4_CLIENT_CONFIRMED (4) /* client is confirmed */ |
a52d726b JL |
260 | #define NFSD4_CLIENT_CB_FLAG_MASK (1 << NFSD4_CLIENT_CB_UPDATE | \ |
261 | 1 << NFSD4_CLIENT_CB_KILL) | |
262 | unsigned long cl_flags; | |
c6bb3ca2 | 263 | struct rpc_cred *cl_cb_cred; |
2bf23875 | 264 | struct rpc_clnt *cl_cb_client; |
6ff8da08 | 265 | u32 cl_cb_ident; |
77a3569d BF |
266 | #define NFSD4_CB_UP 0 |
267 | #define NFSD4_CB_UNKNOWN 1 | |
268 | #define NFSD4_CB_DOWN 2 | |
5423732a | 269 | #define NFSD4_CB_FAULT 3 |
77a3569d | 270 | int cl_cb_state; |
cee277d9 | 271 | struct nfsd4_callback cl_cb_null; |
edd76786 | 272 | struct nfsd4_session *cl_cb_session; |
5ce8ba25 | 273 | struct list_head cl_callbacks; /* list of in-progress callbacks */ |
2bf23875 | 274 | |
6ff8da08 BF |
275 | /* for all client information that callback code might need: */ |
276 | spinlock_t cl_lock; | |
277 | ||
9fb87070 ME |
278 | /* for nfs41 */ |
279 | struct list_head cl_sessions; | |
49557cc7 | 280 | struct nfsd4_clid_slot cl_cs_slot; /* create_session slot */ |
0733d213 | 281 | u32 cl_exchange_flags; |
46583e25 BH |
282 | /* number of rpc's in progress over an associated session: */ |
283 | atomic_t cl_refcount; | |
38524ab3 AA |
284 | |
285 | /* for nfs41 callbacks */ | |
199ff35e RL |
286 | /* We currently support a single back channel with a single slot */ |
287 | unsigned long cl_cb_slot_busy; | |
199ff35e RL |
288 | struct rpc_wait_queue cl_cb_waitq; /* backchannel callers may */ |
289 | /* wait here for slots */ | |
c212cecf | 290 | struct net *net; |
1da177e4 LT |
291 | }; |
292 | ||
293 | /* struct nfs4_client_reset | |
294 | * one per old client. Populates reset_str_hashtbl. Filled from conf_id_hashtbl | |
295 | * upon lease reset, or from upcall to state_daemon (to read in state | |
296 | * from non-volitile storage) upon reboot. | |
297 | */ | |
298 | struct nfs4_client_reclaim { | |
299 | struct list_head cr_strhash; /* hash by cr_name */ | |
0ce0c2b5 | 300 | struct nfs4_client *cr_clp; /* pointer to associated clp */ |
a55370a3 | 301 | char cr_recdir[HEXDIR_LEN]; /* recover dir */ |
1da177e4 LT |
302 | }; |
303 | ||
304 | static inline void | |
305 | update_stateid(stateid_t *stateid) | |
306 | { | |
307 | stateid->si_generation++; | |
81b82965 BF |
308 | /* Wraparound recommendation from 3530bis-13 9.1.3.2: */ |
309 | if (stateid->si_generation == 0) | |
310 | stateid->si_generation = 1; | |
1da177e4 LT |
311 | } |
312 | ||
313 | /* A reasonable value for REPLAY_ISIZE was estimated as follows: | |
314 | * The OPEN response, typically the largest, requires | |
315 | * 4(status) + 8(stateid) + 20(changeinfo) + 4(rflags) + 8(verifier) + | |
316 | * 4(deleg. type) + 8(deleg. stateid) + 4(deleg. recall flag) + | |
317 | * 20(deleg. space limit) + ~32(deleg. ace) = 112 bytes | |
318 | */ | |
319 | ||
320 | #define NFSD4_REPLAY_ISIZE 112 | |
321 | ||
322 | /* | |
323 | * Replay buffer, where the result of the last seqid-mutating operation | |
324 | * is cached. | |
325 | */ | |
326 | struct nfs4_replay { | |
b37ad28b | 327 | __be32 rp_status; |
1da177e4 LT |
328 | unsigned int rp_buflen; |
329 | char *rp_buf; | |
a4773c08 | 330 | struct knfsd_fh rp_openfh; |
58fb12e6 | 331 | struct mutex rp_mutex; |
1da177e4 LT |
332 | char rp_ibuf[NFSD4_REPLAY_ISIZE]; |
333 | }; | |
334 | ||
6b180f0b JL |
335 | struct nfs4_stateowner; |
336 | ||
337 | struct nfs4_stateowner_operations { | |
338 | void (*so_free)(struct nfs4_stateowner *); | |
339 | }; | |
340 | ||
1da177e4 | 341 | struct nfs4_stateowner { |
6b180f0b JL |
342 | struct list_head so_strhash; |
343 | struct list_head so_stateids; | |
344 | struct nfs4_client *so_client; | |
345 | const struct nfs4_stateowner_operations *so_ops; | |
7fb64cee N |
346 | /* after increment in ENCODE_SEQID_OP_TAIL, represents the next |
347 | * sequence id expected from the client: */ | |
6b180f0b JL |
348 | atomic_t so_count; |
349 | u32 so_seqid; | |
350 | struct xdr_netobj so_owner; /* open owner name */ | |
351 | struct nfs4_replay so_replay; | |
352 | bool so_is_open_owner; | |
1da177e4 LT |
353 | }; |
354 | ||
fe0750e5 BF |
355 | struct nfs4_openowner { |
356 | struct nfs4_stateowner oo_owner; /* must be first field */ | |
357 | struct list_head oo_perclient; | |
b31b30e5 BF |
358 | /* |
359 | * We keep around openowners a little while after last close, | |
360 | * which saves clients from having to confirm, and allows us to | |
361 | * handle close replays if they come soon enough. The close_lru | |
362 | * is a list of such openowners, to be reaped by the laundromat | |
363 | * thread eventually if they remain unused: | |
364 | */ | |
365 | struct list_head oo_close_lru; | |
38c387b5 | 366 | struct nfs4_ol_stateid *oo_last_closed_stid; |
fe0750e5 | 367 | time_t oo_time; /* time of placement on so_close_lru */ |
dad1c067 | 368 | #define NFS4_OO_CONFIRMED 1 |
d29b20cd | 369 | #define NFS4_OO_NEW 4 |
dad1c067 | 370 | unsigned char oo_flags; |
fe0750e5 BF |
371 | }; |
372 | ||
373 | struct nfs4_lockowner { | |
374 | struct nfs4_stateowner lo_owner; /* must be first element */ | |
fe0750e5 BF |
375 | }; |
376 | ||
377 | static inline struct nfs4_openowner * openowner(struct nfs4_stateowner *so) | |
378 | { | |
379 | return container_of(so, struct nfs4_openowner, oo_owner); | |
380 | } | |
381 | ||
382 | static inline struct nfs4_lockowner * lockowner(struct nfs4_stateowner *so) | |
383 | { | |
384 | return container_of(so, struct nfs4_lockowner, lo_owner); | |
385 | } | |
386 | ||
1696c47c | 387 | /* nfs4_file: a file opened by some number of (open) nfs4_stateowners. */ |
1da177e4 | 388 | struct nfs4_file { |
8b671b80 | 389 | atomic_t fi_ref; |
1d31a253 | 390 | spinlock_t fi_lock; |
89876f8c | 391 | struct hlist_node fi_hash; /* hash by "struct inode *" */ |
8beefa24 N |
392 | struct list_head fi_stateids; |
393 | struct list_head fi_delegations; | |
f9d7562f BF |
394 | /* One each for O_RDONLY, O_WRONLY, O_RDWR: */ |
395 | struct file * fi_fds[3]; | |
f9d7562f | 396 | /* |
6409a5a6 BF |
397 | * Each open or lock stateid contributes 0-4 to the counts |
398 | * below depending on which bits are set in st_access_bitmap: | |
399 | * 1 to fi_access[O_RDONLY] if NFS4_SHARE_ACCES_READ is set | |
400 | * + 1 to fi_access[O_WRONLY] if NFS4_SHARE_ACCESS_WRITE is set | |
401 | * + 1 to both of the above if NFS4_SHARE_ACCESS_BOTH is set. | |
f9d7562f | 402 | */ |
9ae78bcc | 403 | atomic_t fi_access[2]; |
baeb4ff0 | 404 | u32 fi_share_deny; |
acfdf5c3 BF |
405 | struct file *fi_deleg_file; |
406 | struct file_lock *fi_lease; | |
407 | atomic_t fi_delegees; | |
e2cf80d7 | 408 | struct knfsd_fh fi_fhandle; |
47f9940c | 409 | bool fi_had_conflict; |
1da177e4 LT |
410 | }; |
411 | ||
d5477a8d | 412 | /* "ol" stands for "Open or Lock". Better suggestions welcome. */ |
dcef0413 | 413 | struct nfs4_ol_stateid { |
996e0938 | 414 | struct nfs4_stid st_stid; /* must be first field */ |
1da177e4 | 415 | struct list_head st_perfile; |
ea1da636 | 416 | struct list_head st_perstateowner; |
3c87b9b7 | 417 | struct list_head st_locks; |
1da177e4 | 418 | struct nfs4_stateowner * st_stateowner; |
c11c591f JL |
419 | unsigned char st_access_bmap; |
420 | unsigned char st_deny_bmap; | |
dcef0413 | 421 | struct nfs4_ol_stateid * st_openstp; |
1da177e4 LT |
422 | }; |
423 | ||
dcef0413 BF |
424 | static inline struct nfs4_ol_stateid *openlockstateid(struct nfs4_stid *s) |
425 | { | |
426 | return container_of(s, struct nfs4_ol_stateid, st_stid); | |
427 | } | |
428 | ||
1da177e4 | 429 | /* flags for preprocess_seqid_op() */ |
1da177e4 LT |
430 | #define RD_STATE 0x00000010 |
431 | #define WR_STATE 0x00000020 | |
1da177e4 | 432 | |
dd453dfd | 433 | struct nfsd4_compound_state; |
2c142baa | 434 | struct nfsd_net; |
dd453dfd | 435 | |
5ccb0066 SK |
436 | extern __be32 nfs4_preprocess_stateid_op(struct net *net, |
437 | struct nfsd4_compound_state *cstate, | |
1da177e4 | 438 | stateid_t *stateid, int flags, struct file **filp); |
1da177e4 LT |
439 | extern void nfs4_lock_state(void); |
440 | extern void nfs4_unlock_state(void); | |
6011695d | 441 | void nfs4_put_stid(struct nfs4_stid *s); |
52e19c09 SK |
442 | void nfs4_remove_reclaim_record(struct nfs4_client_reclaim *, struct nfsd_net *); |
443 | extern void nfs4_release_reclaim(struct nfsd_net *); | |
444 | extern struct nfs4_client_reclaim *nfsd4_find_reclaim_client(const char *recdir, | |
445 | struct nfsd_net *nn); | |
0fe492db TM |
446 | extern __be32 nfs4_check_open_reclaim(clientid_t *clid, |
447 | struct nfsd4_compound_state *cstate, struct nfsd_net *nn); | |
80fc015b | 448 | extern int set_callback_cred(void); |
02e1215f JL |
449 | void nfsd4_run_cb_null(struct work_struct *w); |
450 | void nfsd4_run_cb_recall(struct work_struct *w); | |
5a3c9d71 | 451 | extern void nfsd4_probe_callback(struct nfs4_client *clp); |
84f5f7cc | 452 | extern void nfsd4_probe_callback_sync(struct nfs4_client *clp); |
5a3c9d71 | 453 | extern void nfsd4_change_callback(struct nfs4_client *clp, struct nfs4_cb_conn *); |
1da177e4 | 454 | extern void nfsd4_cb_recall(struct nfs4_delegation *dp); |
b5a1a81e BF |
455 | extern int nfsd4_create_callback_queue(void); |
456 | extern void nfsd4_destroy_callback_queue(void); | |
6ff8da08 | 457 | extern void nfsd4_shutdown_callback(struct nfs4_client *); |
02e1215f | 458 | extern void nfsd4_prepare_cb_recall(struct nfs4_delegation *dp); |
52e19c09 SK |
459 | extern struct nfs4_client_reclaim *nfs4_client_to_reclaim(const char *name, |
460 | struct nfsd_net *nn); | |
461 | extern bool nfs4_has_reclaimed_state(const char *name, struct nfsd_net *nn); | |
1da177e4 | 462 | |
2a4317c5 JL |
463 | /* nfs4recover operations */ |
464 | extern int nfsd4_client_tracking_init(struct net *net); | |
465 | extern void nfsd4_client_tracking_exit(struct net *net); | |
466 | extern void nfsd4_client_record_create(struct nfs4_client *clp); | |
467 | extern void nfsd4_client_record_remove(struct nfs4_client *clp); | |
468 | extern int nfsd4_client_record_check(struct nfs4_client *clp); | |
12760c66 | 469 | extern void nfsd4_record_grace_done(struct nfsd_net *nn, time_t boot_time); |
f3c7521f BS |
470 | |
471 | /* nfs fault injection functions */ | |
472 | #ifdef CONFIG_NFSD_FAULT_INJECTION | |
473 | int nfsd_fault_inject_init(void); | |
474 | void nfsd_fault_inject_cleanup(void); | |
8ce54e0d | 475 | u64 nfsd_for_n_state(u64, u64 (*)(struct nfs4_client *, u64)); |
6c1e82a4 | 476 | struct nfs4_client *nfsd_find_client(struct sockaddr_storage *, size_t); |
8ce54e0d BS |
477 | |
478 | u64 nfsd_forget_client(struct nfs4_client *, u64); | |
479 | u64 nfsd_forget_client_locks(struct nfs4_client*, u64); | |
480 | u64 nfsd_forget_client_openowners(struct nfs4_client *, u64); | |
481 | u64 nfsd_forget_client_delegations(struct nfs4_client *, u64); | |
482 | u64 nfsd_recall_client_delegations(struct nfs4_client *, u64); | |
184c1847 BS |
483 | |
484 | u64 nfsd_print_client(struct nfs4_client *, u64); | |
485 | u64 nfsd_print_client_locks(struct nfs4_client *, u64); | |
486 | u64 nfsd_print_client_openowners(struct nfs4_client *, u64); | |
487 | u64 nfsd_print_client_delegations(struct nfs4_client *, u64); | |
f3c7521f BS |
488 | #else /* CONFIG_NFSD_FAULT_INJECTION */ |
489 | static inline int nfsd_fault_inject_init(void) { return 0; } | |
490 | static inline void nfsd_fault_inject_cleanup(void) {} | |
491 | #endif /* CONFIG_NFSD_FAULT_INJECTION */ | |
492 | ||
1da177e4 | 493 | #endif /* NFSD4_STATE_H */ |