1 /* 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 38 #include <linux/idr.h> 39 #include <linux/sunrpc/svc_xprt.h> 40 #include "nfsfh.h" 41 42 typedef struct { 43 u32 cl_boot; 44 u32 cl_id; 45 } clientid_t; 46 47 typedef struct { 48 clientid_t so_clid; 49 u32 so_id; 50 } stateid_opaque_t; 51 52 typedef struct { 53 u32 si_generation; 54 stateid_opaque_t si_opaque; 55 } stateid_t; 56 57 #define STATEID_FMT "(%08x/%08x/%08x/%08x)" 58 #define STATEID_VAL(s) \ 59 (s)->si_opaque.so_clid.cl_boot, \ 60 (s)->si_opaque.so_clid.cl_id, \ 61 (s)->si_opaque.so_id, \ 62 (s)->si_generation 63 64 struct nfsd4_callback { 65 struct nfs4_client *cb_clp; 66 struct list_head cb_per_client; 67 u32 cb_minorversion; 68 struct rpc_message cb_msg; 69 struct nfsd4_callback_ops *cb_ops; 70 struct work_struct cb_work; 71 bool cb_done; 72 }; 73 74 struct nfsd4_callback_ops { 75 void (*prepare)(struct nfsd4_callback *); 76 int (*done)(struct nfsd4_callback *, struct rpc_task *); 77 void (*release)(struct nfsd4_callback *); 78 }; 79 80 /* 81 * A core object that represents a "common" stateid. These are generally 82 * embedded within the different (more specific) stateid objects and contain 83 * fields that are of general use to any stateid. 84 */ 85 struct nfs4_stid { 86 atomic_t sc_count; 87 #define NFS4_OPEN_STID 1 88 #define NFS4_LOCK_STID 2 89 #define NFS4_DELEG_STID 4 90 /* For an open stateid kept around *only* to process close replays: */ 91 #define NFS4_CLOSED_STID 8 92 /* For a deleg stateid kept around only to process free_stateid's: */ 93 #define NFS4_REVOKED_DELEG_STID 16 94 #define NFS4_CLOSED_DELEG_STID 32 95 unsigned char sc_type; 96 stateid_t sc_stateid; 97 struct nfs4_client *sc_client; 98 struct nfs4_file *sc_file; 99 void (*sc_free)(struct nfs4_stid *); 100 }; 101 102 /* 103 * Represents a delegation stateid. The nfs4_client holds references to these 104 * and they are put when it is being destroyed or when the delegation is 105 * returned by the client: 106 * 107 * o 1 reference as long as a delegation is still in force (taken when it's 108 * alloc'd, put when it's returned or revoked) 109 * 110 * o 1 reference as long as a recall rpc is in progress (taken when the lease 111 * is broken, put when the rpc exits) 112 * 113 * o 1 more ephemeral reference for each nfsd thread currently doing something 114 * with that delegation without holding the cl_lock 115 * 116 * If the server attempts to recall a delegation and the client doesn't do so 117 * before a timeout, the server may also revoke the delegation. In that case, 118 * the object will either be destroyed (v4.0) or moved to a per-client list of 119 * revoked delegations (v4.1+). 120 * 121 * This object is a superset of the nfs4_stid. 122 */ 123 struct nfs4_delegation { 124 struct nfs4_stid dl_stid; /* must be first field */ 125 struct list_head dl_perfile; 126 struct list_head dl_perclnt; 127 struct list_head dl_recall_lru; /* delegation recalled */ 128 u32 dl_type; 129 time_t dl_time; 130 /* For recall: */ 131 int dl_retries; 132 struct nfsd4_callback dl_recall; 133 }; 134 135 #define cb_to_delegation(cb) \ 136 container_of(cb, struct nfs4_delegation, dl_recall) 137 138 /* client delegation callback info */ 139 struct nfs4_cb_conn { 140 /* SETCLIENTID info */ 141 struct sockaddr_storage cb_addr; 142 struct sockaddr_storage cb_saddr; 143 size_t cb_addrlen; 144 u32 cb_prog; /* used only in 4.0 case; 145 per-session otherwise */ 146 u32 cb_ident; /* minorversion 0 only */ 147 struct svc_xprt *cb_xprt; /* minorversion 1 only */ 148 }; 149 150 static inline struct nfs4_delegation *delegstateid(struct nfs4_stid *s) 151 { 152 return container_of(s, struct nfs4_delegation, dl_stid); 153 } 154 155 /* Maximum number of slots per session. 160 is useful for long haul TCP */ 156 #define NFSD_MAX_SLOTS_PER_SESSION 160 157 /* Maximum number of operations per session compound */ 158 #define NFSD_MAX_OPS_PER_COMPOUND 16 159 /* Maximum session per slot cache size */ 160 #define NFSD_SLOT_CACHE_SIZE 2048 161 /* Maximum number of NFSD_SLOT_CACHE_SIZE slots per session */ 162 #define NFSD_CACHE_SIZE_SLOTS_PER_SESSION 32 163 #define NFSD_MAX_MEM_PER_SESSION \ 164 (NFSD_CACHE_SIZE_SLOTS_PER_SESSION * NFSD_SLOT_CACHE_SIZE) 165 166 struct nfsd4_slot { 167 u32 sl_seqid; 168 __be32 sl_status; 169 u32 sl_datalen; 170 u16 sl_opcnt; 171 #define NFSD4_SLOT_INUSE (1 << 0) 172 #define NFSD4_SLOT_CACHETHIS (1 << 1) 173 #define NFSD4_SLOT_INITIALIZED (1 << 2) 174 u8 sl_flags; 175 char sl_data[]; 176 }; 177 178 struct nfsd4_channel_attrs { 179 u32 headerpadsz; 180 u32 maxreq_sz; 181 u32 maxresp_sz; 182 u32 maxresp_cached; 183 u32 maxops; 184 u32 maxreqs; 185 u32 nr_rdma_attrs; 186 u32 rdma_attrs; 187 }; 188 189 struct nfsd4_cb_sec { 190 u32 flavor; /* (u32)(-1) used to mean "no valid flavor" */ 191 kuid_t uid; 192 kgid_t gid; 193 }; 194 195 struct nfsd4_create_session { 196 clientid_t clientid; 197 struct nfs4_sessionid sessionid; 198 u32 seqid; 199 u32 flags; 200 struct nfsd4_channel_attrs fore_channel; 201 struct nfsd4_channel_attrs back_channel; 202 u32 callback_prog; 203 struct nfsd4_cb_sec cb_sec; 204 }; 205 206 struct nfsd4_backchannel_ctl { 207 u32 bc_cb_program; 208 struct nfsd4_cb_sec bc_cb_sec; 209 }; 210 211 struct nfsd4_bind_conn_to_session { 212 struct nfs4_sessionid sessionid; 213 u32 dir; 214 }; 215 216 /* The single slot clientid cache structure */ 217 struct nfsd4_clid_slot { 218 u32 sl_seqid; 219 __be32 sl_status; 220 struct nfsd4_create_session sl_cr_ses; 221 }; 222 223 struct nfsd4_conn { 224 struct list_head cn_persession; 225 struct svc_xprt *cn_xprt; 226 struct svc_xpt_user cn_xpt_user; 227 struct nfsd4_session *cn_session; 228 /* CDFC4_FORE, CDFC4_BACK: */ 229 unsigned char cn_flags; 230 }; 231 232 /* 233 * Representation of a v4.1+ session. These are refcounted in a similar fashion 234 * to the nfs4_client. References are only taken when the server is actively 235 * working on the object (primarily during the processing of compounds). 236 */ 237 struct nfsd4_session { 238 atomic_t se_ref; 239 struct list_head se_hash; /* hash by sessionid */ 240 struct list_head se_perclnt; 241 /* See SESSION4_PERSIST, etc. for standard flags; this is internal-only: */ 242 #define NFS4_SESSION_DEAD 0x010 243 u32 se_flags; 244 struct nfs4_client *se_client; 245 struct nfs4_sessionid se_sessionid; 246 struct nfsd4_channel_attrs se_fchannel; 247 struct nfsd4_channel_attrs se_bchannel; 248 struct nfsd4_cb_sec se_cb_sec; 249 struct list_head se_conns; 250 u32 se_cb_prog; 251 u32 se_cb_seq_nr; 252 struct nfsd4_slot *se_slots[]; /* forward channel slots */ 253 }; 254 255 /* formatted contents of nfs4_sessionid */ 256 struct nfsd4_sessionid { 257 clientid_t clientid; 258 u32 sequence; 259 u32 reserved; 260 }; 261 262 #define HEXDIR_LEN 33 /* hex version of 16 byte md5 of cl_name plus '\0' */ 263 264 /* 265 * struct nfs4_client - one per client. Clientids live here. 266 * 267 * The initial object created by an NFS client using SETCLIENTID (for NFSv4.0) 268 * or EXCHANGE_ID (for NFSv4.1+). These objects are refcounted and timestamped. 269 * Each nfsd_net_ns object contains a set of these and they are tracked via 270 * short and long form clientid. They are hashed and searched for under the 271 * per-nfsd_net client_lock spinlock. 272 * 273 * References to it are only held during the processing of compounds, and in 274 * certain other operations. In their "resting state" they have a refcount of 275 * 0. If they are not renewed within a lease period, they become eligible for 276 * destruction by the laundromat. 277 * 278 * These objects can also be destroyed prematurely by the fault injection code, 279 * or if the client sends certain forms of SETCLIENTID or EXCHANGE_ID updates. 280 * Care is taken *not* to do this however when the objects have an elevated 281 * refcount. 282 * 283 * o Each nfs4_client is hashed by clientid 284 * 285 * o Each nfs4_clients is also hashed by name (the opaque quantity initially 286 * sent by the client to identify itself). 287 * 288 * o cl_perclient list is used to ensure no dangling stateowner references 289 * when we expire the nfs4_client 290 */ 291 struct nfs4_client { 292 struct list_head cl_idhash; /* hash by cl_clientid.id */ 293 struct rb_node cl_namenode; /* link into by-name trees */ 294 struct list_head *cl_ownerstr_hashtbl; 295 struct list_head cl_openowners; 296 struct idr cl_stateids; /* stateid lookup */ 297 struct list_head cl_delegations; 298 struct list_head cl_revoked; /* unacknowledged, revoked 4.1 state */ 299 struct list_head cl_lru; /* tail queue */ 300 struct xdr_netobj cl_name; /* id generated by client */ 301 nfs4_verifier cl_verifier; /* generated by client */ 302 time_t cl_time; /* time of last lease renewal */ 303 struct sockaddr_storage cl_addr; /* client ipaddress */ 304 bool cl_mach_cred; /* SP4_MACH_CRED in force */ 305 struct svc_cred cl_cred; /* setclientid principal */ 306 clientid_t cl_clientid; /* generated by server */ 307 nfs4_verifier cl_confirm; /* generated by server */ 308 u32 cl_minorversion; 309 310 /* for v4.0 and v4.1 callbacks: */ 311 struct nfs4_cb_conn cl_cb_conn; 312 #define NFSD4_CLIENT_CB_UPDATE (0) 313 #define NFSD4_CLIENT_CB_KILL (1) 314 #define NFSD4_CLIENT_STABLE (2) /* client on stable storage */ 315 #define NFSD4_CLIENT_RECLAIM_COMPLETE (3) /* reclaim_complete done */ 316 #define NFSD4_CLIENT_CONFIRMED (4) /* client is confirmed */ 317 #define NFSD4_CLIENT_UPCALL_LOCK (5) /* upcall serialization */ 318 #define NFSD4_CLIENT_CB_FLAG_MASK (1 << NFSD4_CLIENT_CB_UPDATE | \ 319 1 << NFSD4_CLIENT_CB_KILL) 320 unsigned long cl_flags; 321 struct rpc_cred *cl_cb_cred; 322 struct rpc_clnt *cl_cb_client; 323 u32 cl_cb_ident; 324 #define NFSD4_CB_UP 0 325 #define NFSD4_CB_UNKNOWN 1 326 #define NFSD4_CB_DOWN 2 327 #define NFSD4_CB_FAULT 3 328 int cl_cb_state; 329 struct nfsd4_callback cl_cb_null; 330 struct nfsd4_session *cl_cb_session; 331 struct list_head cl_callbacks; /* list of in-progress callbacks */ 332 333 /* for all client information that callback code might need: */ 334 spinlock_t cl_lock; 335 336 /* for nfs41 */ 337 struct list_head cl_sessions; 338 struct nfsd4_clid_slot cl_cs_slot; /* create_session slot */ 339 u32 cl_exchange_flags; 340 /* number of rpc's in progress over an associated session: */ 341 atomic_t cl_refcount; 342 343 /* for nfs41 callbacks */ 344 /* We currently support a single back channel with a single slot */ 345 unsigned long cl_cb_slot_busy; 346 struct rpc_wait_queue cl_cb_waitq; /* backchannel callers may */ 347 /* wait here for slots */ 348 struct net *net; 349 }; 350 351 /* struct nfs4_client_reset 352 * one per old client. Populates reset_str_hashtbl. Filled from conf_id_hashtbl 353 * upon lease reset, or from upcall to state_daemon (to read in state 354 * from non-volitile storage) upon reboot. 355 */ 356 struct nfs4_client_reclaim { 357 struct list_head cr_strhash; /* hash by cr_name */ 358 struct nfs4_client *cr_clp; /* pointer to associated clp */ 359 char cr_recdir[HEXDIR_LEN]; /* recover dir */ 360 }; 361 362 static inline void 363 update_stateid(stateid_t *stateid) 364 { 365 stateid->si_generation++; 366 /* Wraparound recommendation from 3530bis-13 9.1.3.2: */ 367 if (stateid->si_generation == 0) 368 stateid->si_generation = 1; 369 } 370 371 /* A reasonable value for REPLAY_ISIZE was estimated as follows: 372 * The OPEN response, typically the largest, requires 373 * 4(status) + 8(stateid) + 20(changeinfo) + 4(rflags) + 8(verifier) + 374 * 4(deleg. type) + 8(deleg. stateid) + 4(deleg. recall flag) + 375 * 20(deleg. space limit) + ~32(deleg. ace) = 112 bytes 376 */ 377 378 #define NFSD4_REPLAY_ISIZE 112 379 380 /* 381 * Replay buffer, where the result of the last seqid-mutating operation 382 * is cached. 383 */ 384 struct nfs4_replay { 385 __be32 rp_status; 386 unsigned int rp_buflen; 387 char *rp_buf; 388 struct knfsd_fh rp_openfh; 389 struct mutex rp_mutex; 390 char rp_ibuf[NFSD4_REPLAY_ISIZE]; 391 }; 392 393 struct nfs4_stateowner; 394 395 struct nfs4_stateowner_operations { 396 void (*so_unhash)(struct nfs4_stateowner *); 397 void (*so_free)(struct nfs4_stateowner *); 398 }; 399 400 /* 401 * A core object that represents either an open or lock owner. The object and 402 * lock owner objects have one of these embedded within them. Refcounts and 403 * other fields common to both owner types are contained within these 404 * structures. 405 */ 406 struct nfs4_stateowner { 407 struct list_head so_strhash; 408 struct list_head so_stateids; 409 struct nfs4_client *so_client; 410 const struct nfs4_stateowner_operations *so_ops; 411 /* after increment in nfsd4_bump_seqid, represents the next 412 * sequence id expected from the client: */ 413 atomic_t so_count; 414 u32 so_seqid; 415 struct xdr_netobj so_owner; /* open owner name */ 416 struct nfs4_replay so_replay; 417 bool so_is_open_owner; 418 }; 419 420 /* 421 * When a file is opened, the client provides an open state owner opaque string 422 * that indicates the "owner" of that open. These objects are refcounted. 423 * References to it are held by each open state associated with it. This object 424 * is a superset of the nfs4_stateowner struct. 425 */ 426 struct nfs4_openowner { 427 struct nfs4_stateowner oo_owner; /* must be first field */ 428 struct list_head oo_perclient; 429 /* 430 * We keep around openowners a little while after last close, 431 * which saves clients from having to confirm, and allows us to 432 * handle close replays if they come soon enough. The close_lru 433 * is a list of such openowners, to be reaped by the laundromat 434 * thread eventually if they remain unused: 435 */ 436 struct list_head oo_close_lru; 437 struct nfs4_ol_stateid *oo_last_closed_stid; 438 time_t oo_time; /* time of placement on so_close_lru */ 439 #define NFS4_OO_CONFIRMED 1 440 unsigned char oo_flags; 441 }; 442 443 /* 444 * Represents a generic "lockowner". Similar to an openowner. References to it 445 * are held by the lock stateids that are created on its behalf. This object is 446 * a superset of the nfs4_stateowner struct (or would be if it needed any extra 447 * fields). 448 */ 449 struct nfs4_lockowner { 450 struct nfs4_stateowner lo_owner; /* must be first element */ 451 }; 452 453 static inline struct nfs4_openowner * openowner(struct nfs4_stateowner *so) 454 { 455 return container_of(so, struct nfs4_openowner, oo_owner); 456 } 457 458 static inline struct nfs4_lockowner * lockowner(struct nfs4_stateowner *so) 459 { 460 return container_of(so, struct nfs4_lockowner, lo_owner); 461 } 462 463 /* 464 * nfs4_file: a file opened by some number of (open) nfs4_stateowners. 465 * 466 * These objects are global. nfsd only keeps one instance of a nfs4_file per 467 * inode (though it may keep multiple file descriptors open per inode). These 468 * are tracked in the file_hashtbl which is protected by the state_lock 469 * spinlock. 470 */ 471 struct nfs4_file { 472 atomic_t fi_ref; 473 spinlock_t fi_lock; 474 struct hlist_node fi_hash; /* hash by "struct inode *" */ 475 struct list_head fi_stateids; 476 struct list_head fi_delegations; 477 /* One each for O_RDONLY, O_WRONLY, O_RDWR: */ 478 struct file * fi_fds[3]; 479 /* 480 * Each open or lock stateid contributes 0-4 to the counts 481 * below depending on which bits are set in st_access_bitmap: 482 * 1 to fi_access[O_RDONLY] if NFS4_SHARE_ACCES_READ is set 483 * + 1 to fi_access[O_WRONLY] if NFS4_SHARE_ACCESS_WRITE is set 484 * + 1 to both of the above if NFS4_SHARE_ACCESS_BOTH is set. 485 */ 486 atomic_t fi_access[2]; 487 u32 fi_share_deny; 488 struct file *fi_deleg_file; 489 atomic_t fi_delegees; 490 struct knfsd_fh fi_fhandle; 491 bool fi_had_conflict; 492 }; 493 494 /* 495 * A generic struct representing either a open or lock stateid. The nfs4_client 496 * holds a reference to each of these objects, and they in turn hold a 497 * reference to their respective stateowners. The client's reference is 498 * released in response to a close or unlock (depending on whether it's an open 499 * or lock stateid) or when the client is being destroyed. 500 * 501 * In the case of v4.0 open stateids, these objects are preserved for a little 502 * while after close in order to handle CLOSE replays. Those are eventually 503 * reclaimed via a LRU scheme by the laundromat. 504 * 505 * This object is a superset of the nfs4_stid. "ol" stands for "Open or Lock". 506 * Better suggestions welcome. 507 */ 508 struct nfs4_ol_stateid { 509 struct nfs4_stid st_stid; /* must be first field */ 510 struct list_head st_perfile; 511 struct list_head st_perstateowner; 512 struct list_head st_locks; 513 struct nfs4_stateowner * st_stateowner; 514 unsigned char st_access_bmap; 515 unsigned char st_deny_bmap; 516 struct nfs4_ol_stateid * st_openstp; 517 }; 518 519 static inline struct nfs4_ol_stateid *openlockstateid(struct nfs4_stid *s) 520 { 521 return container_of(s, struct nfs4_ol_stateid, st_stid); 522 } 523 524 /* flags for preprocess_seqid_op() */ 525 #define RD_STATE 0x00000010 526 #define WR_STATE 0x00000020 527 528 enum nfsd4_cb_op { 529 NFSPROC4_CLNT_CB_NULL = 0, 530 NFSPROC4_CLNT_CB_RECALL, 531 NFSPROC4_CLNT_CB_SEQUENCE, 532 }; 533 534 535 struct nfsd4_compound_state; 536 struct nfsd_net; 537 538 extern __be32 nfs4_preprocess_stateid_op(struct net *net, 539 struct nfsd4_compound_state *cstate, 540 stateid_t *stateid, int flags, struct file **filp); 541 void nfs4_put_stid(struct nfs4_stid *s); 542 void nfs4_remove_reclaim_record(struct nfs4_client_reclaim *, struct nfsd_net *); 543 extern void nfs4_release_reclaim(struct nfsd_net *); 544 extern struct nfs4_client_reclaim *nfsd4_find_reclaim_client(const char *recdir, 545 struct nfsd_net *nn); 546 extern __be32 nfs4_check_open_reclaim(clientid_t *clid, 547 struct nfsd4_compound_state *cstate, struct nfsd_net *nn); 548 extern int set_callback_cred(void); 549 extern void nfsd4_probe_callback(struct nfs4_client *clp); 550 extern void nfsd4_probe_callback_sync(struct nfs4_client *clp); 551 extern void nfsd4_change_callback(struct nfs4_client *clp, struct nfs4_cb_conn *); 552 extern void nfsd4_init_cb(struct nfsd4_callback *cb, struct nfs4_client *clp, 553 struct nfsd4_callback_ops *ops, enum nfsd4_cb_op op); 554 extern void nfsd4_run_cb(struct nfsd4_callback *cb); 555 extern int nfsd4_create_callback_queue(void); 556 extern void nfsd4_destroy_callback_queue(void); 557 extern void nfsd4_shutdown_callback(struct nfs4_client *); 558 extern void nfsd4_prepare_cb_recall(struct nfs4_delegation *dp); 559 extern struct nfs4_client_reclaim *nfs4_client_to_reclaim(const char *name, 560 struct nfsd_net *nn); 561 extern bool nfs4_has_reclaimed_state(const char *name, struct nfsd_net *nn); 562 563 /* grace period management */ 564 void nfsd4_end_grace(struct nfsd_net *nn); 565 566 /* nfs4recover operations */ 567 extern int nfsd4_client_tracking_init(struct net *net); 568 extern void nfsd4_client_tracking_exit(struct net *net); 569 extern void nfsd4_client_record_create(struct nfs4_client *clp); 570 extern void nfsd4_client_record_remove(struct nfs4_client *clp); 571 extern int nfsd4_client_record_check(struct nfs4_client *clp); 572 extern void nfsd4_record_grace_done(struct nfsd_net *nn); 573 574 /* nfs fault injection functions */ 575 #ifdef CONFIG_NFSD_FAULT_INJECTION 576 int nfsd_fault_inject_init(void); 577 void nfsd_fault_inject_cleanup(void); 578 579 u64 nfsd_inject_print_clients(void); 580 u64 nfsd_inject_forget_client(struct sockaddr_storage *, size_t); 581 u64 nfsd_inject_forget_clients(u64); 582 583 u64 nfsd_inject_print_locks(void); 584 u64 nfsd_inject_forget_client_locks(struct sockaddr_storage *, size_t); 585 u64 nfsd_inject_forget_locks(u64); 586 587 u64 nfsd_inject_print_openowners(void); 588 u64 nfsd_inject_forget_client_openowners(struct sockaddr_storage *, size_t); 589 u64 nfsd_inject_forget_openowners(u64); 590 591 u64 nfsd_inject_print_delegations(void); 592 u64 nfsd_inject_forget_client_delegations(struct sockaddr_storage *, size_t); 593 u64 nfsd_inject_forget_delegations(u64); 594 u64 nfsd_inject_recall_client_delegations(struct sockaddr_storage *, size_t); 595 u64 nfsd_inject_recall_delegations(u64); 596 #else /* CONFIG_NFSD_FAULT_INJECTION */ 597 static inline int nfsd_fault_inject_init(void) { return 0; } 598 static inline void nfsd_fault_inject_cleanup(void) {} 599 #endif /* CONFIG_NFSD_FAULT_INJECTION */ 600 601 #endif /* NFSD4_STATE_H */ 602