2 * Copyright (c) 2001 The Regents of the University of Michigan.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
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.
21 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
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31 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
35 #ifndef _NFSD4_STATE_H
36 #define _NFSD4_STATE_H
38 #include <linux/idr.h>
39 #include <linux/refcount.h>
40 #include <linux/sunrpc/svc_xprt.h>
56 stateid_opaque_t si_opaque;
59 #define STATEID_FMT "(%08x/%08x/%08x/%08x)"
60 #define STATEID_VAL(s) \
61 (s)->si_opaque.so_clid.cl_boot, \
62 (s)->si_opaque.so_clid.cl_id, \
63 (s)->si_opaque.so_id, \
66 struct nfsd4_callback {
67 struct nfs4_client *cb_clp;
68 struct rpc_message cb_msg;
69 const struct nfsd4_callback_ops *cb_ops;
70 struct work_struct cb_work;
77 struct nfsd4_callback_ops {
78 void (*prepare)(struct nfsd4_callback *);
79 int (*done)(struct nfsd4_callback *, struct rpc_task *);
80 void (*release)(struct nfsd4_callback *);
84 * A core object that represents a "common" stateid. These are generally
85 * embedded within the different (more specific) stateid objects and contain
86 * fields that are of general use to any stateid.
90 #define NFS4_OPEN_STID 1
91 #define NFS4_LOCK_STID 2
92 #define NFS4_DELEG_STID 4
93 /* For an open stateid kept around *only* to process close replays: */
94 #define NFS4_CLOSED_STID 8
95 /* For a deleg stateid kept around only to process free_stateid's: */
96 #define NFS4_REVOKED_DELEG_STID 16
97 #define NFS4_CLOSED_DELEG_STID 32
98 #define NFS4_LAYOUT_STID 64
99 unsigned char sc_type;
100 stateid_t sc_stateid;
102 struct nfs4_client *sc_client;
103 struct nfs4_file *sc_file;
104 void (*sc_free)(struct nfs4_stid *);
108 * Represents a delegation stateid. The nfs4_client holds references to these
109 * and they are put when it is being destroyed or when the delegation is
110 * returned by the client:
112 * o 1 reference as long as a delegation is still in force (taken when it's
113 * alloc'd, put when it's returned or revoked)
115 * o 1 reference as long as a recall rpc is in progress (taken when the lease
116 * is broken, put when the rpc exits)
118 * o 1 more ephemeral reference for each nfsd thread currently doing something
119 * with that delegation without holding the cl_lock
121 * If the server attempts to recall a delegation and the client doesn't do so
122 * before a timeout, the server may also revoke the delegation. In that case,
123 * the object will either be destroyed (v4.0) or moved to a per-client list of
124 * revoked delegations (v4.1+).
126 * This object is a superset of the nfs4_stid.
128 struct nfs4_delegation {
129 struct nfs4_stid dl_stid; /* must be first field */
130 struct list_head dl_perfile;
131 struct list_head dl_perclnt;
132 struct list_head dl_recall_lru; /* delegation recalled */
133 struct nfs4_clnt_odstate *dl_clnt_odstate;
138 struct nfsd4_callback dl_recall;
141 #define cb_to_delegation(cb) \
142 container_of(cb, struct nfs4_delegation, dl_recall)
144 /* client delegation callback info */
145 struct nfs4_cb_conn {
146 /* SETCLIENTID info */
147 struct sockaddr_storage cb_addr;
148 struct sockaddr_storage cb_saddr;
150 u32 cb_prog; /* used only in 4.0 case;
151 per-session otherwise */
152 u32 cb_ident; /* minorversion 0 only */
153 struct svc_xprt *cb_xprt; /* minorversion 1 only */
156 static inline struct nfs4_delegation *delegstateid(struct nfs4_stid *s)
158 return container_of(s, struct nfs4_delegation, dl_stid);
161 /* Maximum number of slots per session. 160 is useful for long haul TCP */
162 #define NFSD_MAX_SLOTS_PER_SESSION 160
163 /* Maximum number of operations per session compound */
164 #define NFSD_MAX_OPS_PER_COMPOUND 16
165 /* Maximum session per slot cache size */
166 #define NFSD_SLOT_CACHE_SIZE 2048
167 /* Maximum number of NFSD_SLOT_CACHE_SIZE slots per session */
168 #define NFSD_CACHE_SIZE_SLOTS_PER_SESSION 32
169 #define NFSD_MAX_MEM_PER_SESSION \
170 (NFSD_CACHE_SIZE_SLOTS_PER_SESSION * NFSD_SLOT_CACHE_SIZE)
175 struct svc_cred sl_cred;
178 #define NFSD4_SLOT_INUSE (1 << 0)
179 #define NFSD4_SLOT_CACHETHIS (1 << 1)
180 #define NFSD4_SLOT_INITIALIZED (1 << 2)
181 #define NFSD4_SLOT_CACHED (1 << 3)
186 struct nfsd4_channel_attrs {
197 struct nfsd4_cb_sec {
198 u32 flavor; /* (u32)(-1) used to mean "no valid flavor" */
203 struct nfsd4_create_session {
205 struct nfs4_sessionid sessionid;
208 struct nfsd4_channel_attrs fore_channel;
209 struct nfsd4_channel_attrs back_channel;
211 struct nfsd4_cb_sec cb_sec;
214 struct nfsd4_backchannel_ctl {
216 struct nfsd4_cb_sec bc_cb_sec;
219 struct nfsd4_bind_conn_to_session {
220 struct nfs4_sessionid sessionid;
224 /* The single slot clientid cache structure */
225 struct nfsd4_clid_slot {
228 struct nfsd4_create_session sl_cr_ses;
232 struct list_head cn_persession;
233 struct svc_xprt *cn_xprt;
234 struct svc_xpt_user cn_xpt_user;
235 struct nfsd4_session *cn_session;
236 /* CDFC4_FORE, CDFC4_BACK: */
237 unsigned char cn_flags;
241 * Representation of a v4.1+ session. These are refcounted in a similar fashion
242 * to the nfs4_client. References are only taken when the server is actively
243 * working on the object (primarily during the processing of compounds).
245 struct nfsd4_session {
247 struct list_head se_hash; /* hash by sessionid */
248 struct list_head se_perclnt;
249 /* See SESSION4_PERSIST, etc. for standard flags; this is internal-only: */
250 #define NFS4_SESSION_DEAD 0x010
252 struct nfs4_client *se_client;
253 struct nfs4_sessionid se_sessionid;
254 struct nfsd4_channel_attrs se_fchannel;
255 struct nfsd4_channel_attrs se_bchannel;
256 struct nfsd4_cb_sec se_cb_sec;
257 struct list_head se_conns;
260 struct nfsd4_slot *se_slots[]; /* forward channel slots */
263 /* formatted contents of nfs4_sessionid */
264 struct nfsd4_sessionid {
270 #define HEXDIR_LEN 33 /* hex version of 16 byte md5 of cl_name plus '\0' */
273 * struct nfs4_client - one per client. Clientids live here.
275 * The initial object created by an NFS client using SETCLIENTID (for NFSv4.0)
276 * or EXCHANGE_ID (for NFSv4.1+). These objects are refcounted and timestamped.
277 * Each nfsd_net_ns object contains a set of these and they are tracked via
278 * short and long form clientid. They are hashed and searched for under the
279 * per-nfsd_net client_lock spinlock.
281 * References to it are only held during the processing of compounds, and in
282 * certain other operations. In their "resting state" they have a refcount of
283 * 0. If they are not renewed within a lease period, they become eligible for
284 * destruction by the laundromat.
286 * These objects can also be destroyed prematurely by the fault injection code,
287 * or if the client sends certain forms of SETCLIENTID or EXCHANGE_ID updates.
288 * Care is taken *not* to do this however when the objects have an elevated
291 * o Each nfs4_client is hashed by clientid
293 * o Each nfs4_clients is also hashed by name (the opaque quantity initially
294 * sent by the client to identify itself).
296 * o cl_perclient list is used to ensure no dangling stateowner references
297 * when we expire the nfs4_client
300 struct list_head cl_idhash; /* hash by cl_clientid.id */
301 struct rb_node cl_namenode; /* link into by-name trees */
302 struct list_head *cl_ownerstr_hashtbl;
303 struct list_head cl_openowners;
304 struct idr cl_stateids; /* stateid lookup */
305 struct list_head cl_delegations;
306 struct list_head cl_revoked; /* unacknowledged, revoked 4.1 state */
307 struct list_head cl_lru; /* tail queue */
308 #ifdef CONFIG_NFSD_PNFS
309 struct list_head cl_lo_states; /* outstanding layout states */
311 struct xdr_netobj cl_name; /* id generated by client */
312 nfs4_verifier cl_verifier; /* generated by client */
313 time_t cl_time; /* time of last lease renewal */
314 struct sockaddr_storage cl_addr; /* client ipaddress */
315 bool cl_mach_cred; /* SP4_MACH_CRED in force */
316 struct svc_cred cl_cred; /* setclientid principal */
317 clientid_t cl_clientid; /* generated by server */
318 nfs4_verifier cl_confirm; /* generated by server */
320 /* NFSv4.1 client implementation id: */
321 struct xdr_netobj cl_nii_domain;
322 struct xdr_netobj cl_nii_name;
323 struct timespec cl_nii_time;
325 /* for v4.0 and v4.1 callbacks: */
326 struct nfs4_cb_conn cl_cb_conn;
327 #define NFSD4_CLIENT_CB_UPDATE (0)
328 #define NFSD4_CLIENT_CB_KILL (1)
329 #define NFSD4_CLIENT_STABLE (2) /* client on stable storage */
330 #define NFSD4_CLIENT_RECLAIM_COMPLETE (3) /* reclaim_complete done */
331 #define NFSD4_CLIENT_CONFIRMED (4) /* client is confirmed */
332 #define NFSD4_CLIENT_UPCALL_LOCK (5) /* upcall serialization */
333 #define NFSD4_CLIENT_CB_FLAG_MASK (1 << NFSD4_CLIENT_CB_UPDATE | \
334 1 << NFSD4_CLIENT_CB_KILL)
335 unsigned long cl_flags;
336 const struct cred *cl_cb_cred;
337 struct rpc_clnt *cl_cb_client;
339 #define NFSD4_CB_UP 0
340 #define NFSD4_CB_UNKNOWN 1
341 #define NFSD4_CB_DOWN 2
342 #define NFSD4_CB_FAULT 3
344 struct nfsd4_callback cl_cb_null;
345 struct nfsd4_session *cl_cb_session;
347 /* for all client information that callback code might need: */
351 struct list_head cl_sessions;
352 struct nfsd4_clid_slot cl_cs_slot; /* create_session slot */
353 u32 cl_exchange_flags;
354 /* number of rpc's in progress over an associated session: */
355 atomic_t cl_rpc_users;
356 struct nfsdfs_client cl_nfsdfs;
357 struct nfs4_op_map cl_spo_must_allow;
359 /* debugging info directory under nfsd/clients/ : */
360 struct dentry *cl_nfsd_dentry;
362 /* for nfs41 callbacks */
363 /* We currently support a single back channel with a single slot */
364 unsigned long cl_cb_slot_busy;
365 struct rpc_wait_queue cl_cb_waitq; /* backchannel callers may */
366 /* wait here for slots */
368 struct list_head async_copies; /* list of async copies */
369 spinlock_t async_lock; /* lock for async copies */
370 atomic_t cl_cb_inflight; /* Outstanding callbacks */
373 /* struct nfs4_client_reset
374 * one per old client. Populates reset_str_hashtbl. Filled from conf_id_hashtbl
375 * upon lease reset, or from upcall to state_daemon (to read in state
376 * from non-volitile storage) upon reboot.
378 struct nfs4_client_reclaim {
379 struct list_head cr_strhash; /* hash by cr_name */
380 struct nfs4_client *cr_clp; /* pointer to associated clp */
381 struct xdr_netobj cr_name; /* recovery dir name */
382 struct xdr_netobj cr_princhash;
385 /* A reasonable value for REPLAY_ISIZE was estimated as follows:
386 * The OPEN response, typically the largest, requires
387 * 4(status) + 8(stateid) + 20(changeinfo) + 4(rflags) + 8(verifier) +
388 * 4(deleg. type) + 8(deleg. stateid) + 4(deleg. recall flag) +
389 * 20(deleg. space limit) + ~32(deleg. ace) = 112 bytes
392 #define NFSD4_REPLAY_ISIZE 112
395 * Replay buffer, where the result of the last seqid-mutating operation
400 unsigned int rp_buflen;
402 struct knfsd_fh rp_openfh;
403 struct mutex rp_mutex;
404 char rp_ibuf[NFSD4_REPLAY_ISIZE];
407 struct nfs4_stateowner;
409 struct nfs4_stateowner_operations {
410 void (*so_unhash)(struct nfs4_stateowner *);
411 void (*so_free)(struct nfs4_stateowner *);
415 * A core object that represents either an open or lock owner. The object and
416 * lock owner objects have one of these embedded within them. Refcounts and
417 * other fields common to both owner types are contained within these
420 struct nfs4_stateowner {
421 struct list_head so_strhash;
422 struct list_head so_stateids;
423 struct nfs4_client *so_client;
424 const struct nfs4_stateowner_operations *so_ops;
425 /* after increment in nfsd4_bump_seqid, represents the next
426 * sequence id expected from the client: */
429 struct xdr_netobj so_owner; /* open owner name */
430 struct nfs4_replay so_replay;
431 bool so_is_open_owner;
435 * When a file is opened, the client provides an open state owner opaque string
436 * that indicates the "owner" of that open. These objects are refcounted.
437 * References to it are held by each open state associated with it. This object
438 * is a superset of the nfs4_stateowner struct.
440 struct nfs4_openowner {
441 struct nfs4_stateowner oo_owner; /* must be first field */
442 struct list_head oo_perclient;
444 * We keep around openowners a little while after last close,
445 * which saves clients from having to confirm, and allows us to
446 * handle close replays if they come soon enough. The close_lru
447 * is a list of such openowners, to be reaped by the laundromat
448 * thread eventually if they remain unused:
450 struct list_head oo_close_lru;
451 struct nfs4_ol_stateid *oo_last_closed_stid;
452 time_t oo_time; /* time of placement on so_close_lru */
453 #define NFS4_OO_CONFIRMED 1
454 unsigned char oo_flags;
458 * Represents a generic "lockowner". Similar to an openowner. References to it
459 * are held by the lock stateids that are created on its behalf. This object is
460 * a superset of the nfs4_stateowner struct.
462 struct nfs4_lockowner {
463 struct nfs4_stateowner lo_owner; /* must be first element */
464 struct list_head lo_blocked; /* blocked file_locks */
467 static inline struct nfs4_openowner * openowner(struct nfs4_stateowner *so)
469 return container_of(so, struct nfs4_openowner, oo_owner);
472 static inline struct nfs4_lockowner * lockowner(struct nfs4_stateowner *so)
474 return container_of(so, struct nfs4_lockowner, lo_owner);
478 * Per-client state indicating no. of opens and outstanding delegations
479 * on a file from a particular client.'od' stands for 'open & delegation'
481 struct nfs4_clnt_odstate {
482 struct nfs4_client *co_client;
483 struct nfs4_file *co_file;
484 struct list_head co_perfile;
485 refcount_t co_odcount;
489 * nfs4_file: a file opened by some number of (open) nfs4_stateowners.
491 * These objects are global. nfsd keeps one instance of a nfs4_file per
492 * filehandle (though it may keep multiple file descriptors for each). Each
493 * inode can have multiple filehandles associated with it, so there is
494 * (potentially) a many to one relationship between this struct and struct
497 * These are hashed by filehandle in the file_hashtbl, which is protected by
498 * the global state_lock spinlock.
503 struct hlist_node fi_hash; /* hash on fi_fhandle */
504 struct list_head fi_stateids;
506 struct list_head fi_delegations;
507 struct rcu_head fi_rcu;
509 struct list_head fi_clnt_odstate;
510 /* One each for O_RDONLY, O_WRONLY, O_RDWR: */
511 struct nfsd_file *fi_fds[3];
513 * Each open or lock stateid contributes 0-4 to the counts
514 * below depending on which bits are set in st_access_bitmap:
515 * 1 to fi_access[O_RDONLY] if NFS4_SHARE_ACCES_READ is set
516 * + 1 to fi_access[O_WRONLY] if NFS4_SHARE_ACCESS_WRITE is set
517 * + 1 to both of the above if NFS4_SHARE_ACCESS_BOTH is set.
519 atomic_t fi_access[2];
521 struct nfsd_file *fi_deleg_file;
523 struct knfsd_fh fi_fhandle;
524 bool fi_had_conflict;
525 #ifdef CONFIG_NFSD_PNFS
526 struct list_head fi_lo_states;
527 atomic_t fi_lo_recalls;
532 * A generic struct representing either a open or lock stateid. The nfs4_client
533 * holds a reference to each of these objects, and they in turn hold a
534 * reference to their respective stateowners. The client's reference is
535 * released in response to a close or unlock (depending on whether it's an open
536 * or lock stateid) or when the client is being destroyed.
538 * In the case of v4.0 open stateids, these objects are preserved for a little
539 * while after close in order to handle CLOSE replays. Those are eventually
540 * reclaimed via a LRU scheme by the laundromat.
542 * This object is a superset of the nfs4_stid. "ol" stands for "Open or Lock".
543 * Better suggestions welcome.
545 struct nfs4_ol_stateid {
546 struct nfs4_stid st_stid;
547 struct list_head st_perfile;
548 struct list_head st_perstateowner;
549 struct list_head st_locks;
550 struct nfs4_stateowner *st_stateowner;
551 struct nfs4_clnt_odstate *st_clnt_odstate;
552 unsigned char st_access_bmap;
553 unsigned char st_deny_bmap;
554 struct nfs4_ol_stateid *st_openstp;
555 struct mutex st_mutex;
558 static inline struct nfs4_ol_stateid *openlockstateid(struct nfs4_stid *s)
560 return container_of(s, struct nfs4_ol_stateid, st_stid);
563 struct nfs4_layout_stateid {
564 struct nfs4_stid ls_stid;
565 struct list_head ls_perclnt;
566 struct list_head ls_perfile;
568 struct list_head ls_layouts;
570 struct nfsd_file *ls_file;
571 struct nfsd4_callback ls_recall;
572 stateid_t ls_recall_sid;
574 struct mutex ls_mutex;
577 static inline struct nfs4_layout_stateid *layoutstateid(struct nfs4_stid *s)
579 return container_of(s, struct nfs4_layout_stateid, ls_stid);
582 /* flags for preprocess_seqid_op() */
583 #define RD_STATE 0x00000010
584 #define WR_STATE 0x00000020
587 NFSPROC4_CLNT_CB_NULL = 0,
588 NFSPROC4_CLNT_CB_RECALL,
589 NFSPROC4_CLNT_CB_LAYOUT,
590 NFSPROC4_CLNT_CB_OFFLOAD,
591 NFSPROC4_CLNT_CB_SEQUENCE,
592 NFSPROC4_CLNT_CB_NOTIFY_LOCK,
595 /* Returns true iff a is later than b: */
596 static inline bool nfsd4_stateid_generation_after(stateid_t *a, stateid_t *b)
598 return (s32)(a->si_generation - b->si_generation) > 0;
602 * When a client tries to get a lock on a file, we set one of these objects
603 * on the blocking lock. When the lock becomes free, we can then issue a
604 * CB_NOTIFY_LOCK to the server.
606 struct nfsd4_blocked_lock {
607 struct list_head nbl_list;
608 struct list_head nbl_lru;
609 unsigned long nbl_time;
610 struct file_lock nbl_lock;
611 struct knfsd_fh nbl_fh;
612 struct nfsd4_callback nbl_cb;
615 struct nfsd4_compound_state;
619 extern __be32 nfs4_preprocess_stateid_op(struct svc_rqst *rqstp,
620 struct nfsd4_compound_state *cstate, struct svc_fh *fhp,
621 stateid_t *stateid, int flags, struct nfsd_file **filp);
622 __be32 nfsd4_lookup_stateid(struct nfsd4_compound_state *cstate,
623 stateid_t *stateid, unsigned char typemask,
624 struct nfs4_stid **s, struct nfsd_net *nn);
625 struct nfs4_stid *nfs4_alloc_stid(struct nfs4_client *cl, struct kmem_cache *slab,
626 void (*sc_free)(struct nfs4_stid *));
627 int nfs4_init_cp_state(struct nfsd_net *nn, struct nfsd4_copy *copy);
628 void nfs4_free_cp_state(struct nfsd4_copy *copy);
629 void nfs4_unhash_stid(struct nfs4_stid *s);
630 void nfs4_put_stid(struct nfs4_stid *s);
631 void nfs4_inc_and_copy_stateid(stateid_t *dst, struct nfs4_stid *stid);
632 void nfs4_remove_reclaim_record(struct nfs4_client_reclaim *, struct nfsd_net *);
633 extern void nfs4_release_reclaim(struct nfsd_net *);
634 extern struct nfs4_client_reclaim *nfsd4_find_reclaim_client(struct xdr_netobj name,
635 struct nfsd_net *nn);
636 extern __be32 nfs4_check_open_reclaim(clientid_t *clid,
637 struct nfsd4_compound_state *cstate, struct nfsd_net *nn);
638 extern void nfsd4_probe_callback(struct nfs4_client *clp);
639 extern void nfsd4_probe_callback_sync(struct nfs4_client *clp);
640 extern void nfsd4_change_callback(struct nfs4_client *clp, struct nfs4_cb_conn *);
641 extern void nfsd4_init_cb(struct nfsd4_callback *cb, struct nfs4_client *clp,
642 const struct nfsd4_callback_ops *ops, enum nfsd4_cb_op op);
643 extern void nfsd4_run_cb(struct nfsd4_callback *cb);
644 extern int nfsd4_create_callback_queue(void);
645 extern void nfsd4_destroy_callback_queue(void);
646 extern void nfsd4_shutdown_callback(struct nfs4_client *);
647 extern void nfsd4_shutdown_copy(struct nfs4_client *clp);
648 extern void nfsd4_prepare_cb_recall(struct nfs4_delegation *dp);
649 extern struct nfs4_client_reclaim *nfs4_client_to_reclaim(struct xdr_netobj name,
650 struct xdr_netobj princhash, struct nfsd_net *nn);
651 extern bool nfs4_has_reclaimed_state(struct xdr_netobj name, struct nfsd_net *nn);
653 struct nfs4_file *find_file(struct knfsd_fh *fh);
654 void put_nfs4_file(struct nfs4_file *fi);
655 extern void nfs4_put_copy(struct nfsd4_copy *copy);
656 extern struct nfsd4_copy *
657 find_async_copy(struct nfs4_client *clp, stateid_t *staetid);
658 static inline void get_nfs4_file(struct nfs4_file *fi)
660 refcount_inc(&fi->fi_ref);
662 struct nfsd_file *find_any_file(struct nfs4_file *f);
664 /* grace period management */
665 void nfsd4_end_grace(struct nfsd_net *nn);
667 /* nfs4recover operations */
668 extern int nfsd4_client_tracking_init(struct net *net);
669 extern void nfsd4_client_tracking_exit(struct net *net);
670 extern void nfsd4_client_record_create(struct nfs4_client *clp);
671 extern void nfsd4_client_record_remove(struct nfs4_client *clp);
672 extern int nfsd4_client_record_check(struct nfs4_client *clp);
673 extern void nfsd4_record_grace_done(struct nfsd_net *nn);
675 /* nfs fault injection functions */
676 #ifdef CONFIG_NFSD_FAULT_INJECTION
677 void nfsd_fault_inject_init(void);
678 void nfsd_fault_inject_cleanup(void);
680 u64 nfsd_inject_print_clients(void);
681 u64 nfsd_inject_forget_client(struct sockaddr_storage *, size_t);
682 u64 nfsd_inject_forget_clients(u64);
684 u64 nfsd_inject_print_locks(void);
685 u64 nfsd_inject_forget_client_locks(struct sockaddr_storage *, size_t);
686 u64 nfsd_inject_forget_locks(u64);
688 u64 nfsd_inject_print_openowners(void);
689 u64 nfsd_inject_forget_client_openowners(struct sockaddr_storage *, size_t);
690 u64 nfsd_inject_forget_openowners(u64);
692 u64 nfsd_inject_print_delegations(void);
693 u64 nfsd_inject_forget_client_delegations(struct sockaddr_storage *, size_t);
694 u64 nfsd_inject_forget_delegations(u64);
695 u64 nfsd_inject_recall_client_delegations(struct sockaddr_storage *, size_t);
696 u64 nfsd_inject_recall_delegations(u64);
697 #else /* CONFIG_NFSD_FAULT_INJECTION */
698 static inline void nfsd_fault_inject_init(void) {}
699 static inline void nfsd_fault_inject_cleanup(void) {}
700 #endif /* CONFIG_NFSD_FAULT_INJECTION */
702 #endif /* NFSD4_STATE_H */