1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 27 /* All Rights Reserved */ 28 29 /* 30 * Portions of this source code were derived from Berkeley 4.3 BSD 31 * under license from the Regents of the University of California. 32 */ 33 34 #ifndef _NFS4_CLNT_H 35 #define _NFS4_CLNT_H 36 37 #include <sys/errno.h> 38 #include <sys/types.h> 39 #include <sys/kstat.h> 40 #include <sys/time.h> 41 #include <sys/flock.h> 42 #include <vm/page.h> 43 #include <nfs/nfs4_kprot.h> 44 #include <nfs/nfs4.h> 45 #include <nfs/rnode.h> 46 #include <sys/avl.h> 47 #include <sys/list.h> 48 #include <rpc/auth.h> 49 50 #ifdef __cplusplus 51 extern "C" { 52 #endif 53 54 #define NFS4_SIZE_OK(size) ((size) <= MAXOFFSET_T) 55 56 /* Four states of nfs4_server's lease_valid */ 57 #define NFS4_LEASE_INVALID 0 58 #define NFS4_LEASE_VALID 1 59 #define NFS4_LEASE_UNINITIALIZED 2 60 #define NFS4_LEASE_NOT_STARTED 3 61 62 /* flag to tell the renew thread it should exit */ 63 #define NFS4_THREAD_EXIT 1 64 65 /* Default number of seconds to wait on GRACE and DELAY errors */ 66 #define NFS4ERR_DELAY_TIME 10 67 68 /* Number of hash buckets for open owners for each nfs4_server */ 69 #define NFS4_NUM_OO_BUCKETS 53 70 71 /* Number of freed open owners (per mntinfo4_t) to keep around */ 72 #define NFS4_NUM_FREED_OPEN_OWNERS 8 73 74 /* Number of seconds to wait before retrying a SETCLIENTID(_CONFIRM) op */ 75 #define NFS4_RETRY_SCLID_DELAY 10 76 77 /* Number of times we should retry a SETCLIENTID(_CONFIRM) op */ 78 #define NFS4_NUM_SCLID_RETRIES 3 79 80 /* Number of times we should retry on open after getting NFS4ERR_BAD_SEQID */ 81 #define NFS4_NUM_RETRY_BAD_SEQID 3 82 83 /* 84 * Is the attribute cache valid? If client holds a delegation, then attrs 85 * are by definition valid. If not, then check to see if attrs have timed out. 86 */ 87 #define ATTRCACHE4_VALID(vp) (VTOR4(vp)->r_deleg_type != OPEN_DELEGATE_NONE || \ 88 gethrtime() < VTOR4(vp)->r_time_attr_inval) 89 90 /* 91 * Flags to indicate whether to purge the DNLC for non-directory vnodes 92 * in a call to nfs_purge_caches. 93 */ 94 #define NFS4_NOPURGE_DNLC 0 95 #define NFS4_PURGE_DNLC 1 96 97 /* 98 * Is cache valid? 99 * Swap is always valid, if no attributes (attrtime == 0) or 100 * if mtime matches cached mtime it is valid 101 * NOTE: mtime is now a timestruc_t. 102 * Caller should be holding the rnode r_statelock mutex. 103 */ 104 #define CACHE4_VALID(rp, mtime, fsize) \ 105 ((RTOV4(rp)->v_flag & VISSWAP) == VISSWAP || \ 106 (((mtime).tv_sec == (rp)->r_attr.va_mtime.tv_sec && \ 107 (mtime).tv_nsec == (rp)->r_attr.va_mtime.tv_nsec) && \ 108 ((fsize) == (rp)->r_attr.va_size))) 109 110 /* 111 * Macro to detect forced unmount or a zone shutdown. 112 */ 113 #define FS_OR_ZONE_GONE4(vfsp) \ 114 (((vfsp)->vfs_flag & VFS_UNMOUNTED) || \ 115 zone_status_get(curproc->p_zone) >= ZONE_IS_SHUTTING_DOWN) 116 117 /* 118 * Macro to help determine whether a request failed because the underlying 119 * filesystem has been forcibly unmounted or because of zone shutdown. 120 */ 121 #define NFS4_FRC_UNMT_ERR(err, vfsp) \ 122 ((err) == EIO && FS_OR_ZONE_GONE4((vfsp))) 123 124 /* 125 * Due to the way the address space callbacks are used to execute a delmap, 126 * we must keep track of how many times the same thread has called 127 * VOP_DELMAP()->nfs4_delmap(). This is done by having a list of 128 * nfs4_delmapcall_t's associated with each rnode4_t. This list is protected 129 * by the rnode4_t's r_statelock. The individual elements do not need to be 130 * protected as they will only ever be created, modified and destroyed by 131 * one thread (the call_id). 132 * See nfs4_delmap() for further explanation. 133 */ 134 typedef struct nfs4_delmapcall { 135 kthread_t *call_id; 136 int error; /* error from delmap */ 137 list_node_t call_node; 138 } nfs4_delmapcall_t; 139 140 /* 141 * delmap address space callback args 142 */ 143 typedef struct nfs4_delmap_args { 144 vnode_t *vp; 145 offset_t off; 146 caddr_t addr; 147 size_t len; 148 uint_t prot; 149 uint_t maxprot; 150 uint_t flags; 151 cred_t *cr; 152 nfs4_delmapcall_t *caller; /* to retrieve errors from the cb */ 153 } nfs4_delmap_args_t; 154 155 /* 156 * client side statistics 157 */ 158 /* 159 * Per-zone counters 160 */ 161 struct clstat4 { 162 kstat_named_t calls; /* client requests */ 163 kstat_named_t badcalls; /* rpc failures */ 164 kstat_named_t clgets; /* client handle gets */ 165 kstat_named_t cltoomany; /* client handle cache misses */ 166 #ifdef DEBUG 167 kstat_named_t clalloc; /* number of client handles */ 168 kstat_named_t noresponse; /* server not responding cnt */ 169 kstat_named_t failover; /* server failover count */ 170 kstat_named_t remap; /* server remap count */ 171 #endif 172 }; 173 174 #ifdef DEBUG 175 /* 176 * The following are statistics that describe the behavior of the system as a 177 * whole and don't correspond to any particular zone. 178 */ 179 struct clstat4_debug { 180 kstat_named_t nrnode; /* number of allocated rnodes */ 181 kstat_named_t access; /* size of access cache */ 182 kstat_named_t dirent; /* size of readdir cache */ 183 kstat_named_t dirents; /* size of readdir buf cache */ 184 kstat_named_t reclaim; /* number of reclaims */ 185 kstat_named_t clreclaim; /* number of cl reclaims */ 186 kstat_named_t f_reclaim; /* number of free reclaims */ 187 kstat_named_t a_reclaim; /* number of active reclaims */ 188 kstat_named_t r_reclaim; /* number of rnode reclaims */ 189 kstat_named_t rpath; /* bytes used to store rpaths */ 190 }; 191 extern struct clstat4_debug clstat4_debug; 192 193 #endif 194 195 /* 196 * The NFS specific async_reqs structure. 197 */ 198 199 enum iotype4 { 200 NFS4_READ_AHEAD, 201 NFS4_PUTAPAGE, 202 NFS4_PAGEIO, 203 NFS4_READDIR, 204 NFS4_INACTIVE, 205 NFS4_COMMIT 206 }; 207 #define NFS4_ASYNC_TYPES (NFS4_COMMIT + 1) 208 209 struct nfs4_async_read_req { 210 void (*readahead)(); /* pointer to readahead function */ 211 u_offset_t blkoff; /* offset in file */ 212 struct seg *seg; /* segment to do i/o to */ 213 caddr_t addr; /* address to do i/o to */ 214 }; 215 216 struct nfs4_pageio_req { 217 int (*pageio)(); /* pointer to pageio function */ 218 page_t *pp; /* page list */ 219 u_offset_t io_off; /* offset in file */ 220 uint_t io_len; /* size of request */ 221 int flags; 222 }; 223 224 struct nfs4_readdir_req { 225 int (*readdir)(); /* pointer to readdir function */ 226 struct rddir4_cache *rdc; /* pointer to cache entry to fill */ 227 }; 228 229 struct nfs4_commit_req { 230 void (*commit)(); /* pointer to commit function */ 231 page_t *plist; /* page list */ 232 offset4 offset; /* starting offset */ 233 count4 count; /* size of range to be commited */ 234 }; 235 236 struct nfs4_async_reqs { 237 struct nfs4_async_reqs *a_next; /* pointer to next arg struct */ 238 #ifdef DEBUG 239 kthread_t *a_queuer; /* thread id of queueing thread */ 240 #endif 241 struct vnode *a_vp; /* vnode pointer */ 242 struct cred *a_cred; /* cred pointer */ 243 enum iotype4 a_io; /* i/o type */ 244 union { 245 struct nfs4_async_read_req a_read_args; 246 struct nfs4_pageio_req a_pageio_args; 247 struct nfs4_readdir_req a_readdir_args; 248 struct nfs4_commit_req a_commit_args; 249 } a_args; 250 }; 251 252 #define a_nfs4_readahead a_args.a_read_args.readahead 253 #define a_nfs4_blkoff a_args.a_read_args.blkoff 254 #define a_nfs4_seg a_args.a_read_args.seg 255 #define a_nfs4_addr a_args.a_read_args.addr 256 257 #define a_nfs4_putapage a_args.a_pageio_args.pageio 258 #define a_nfs4_pageio a_args.a_pageio_args.pageio 259 #define a_nfs4_pp a_args.a_pageio_args.pp 260 #define a_nfs4_off a_args.a_pageio_args.io_off 261 #define a_nfs4_len a_args.a_pageio_args.io_len 262 #define a_nfs4_flags a_args.a_pageio_args.flags 263 264 #define a_nfs4_readdir a_args.a_readdir_args.readdir 265 #define a_nfs4_rdc a_args.a_readdir_args.rdc 266 267 #define a_nfs4_commit a_args.a_commit_args.commit 268 #define a_nfs4_plist a_args.a_commit_args.plist 269 #define a_nfs4_offset a_args.a_commit_args.offset 270 #define a_nfs4_count a_args.a_commit_args.count 271 272 /* 273 * Security information 274 */ 275 typedef struct sv_secinfo { 276 uint_t count; /* how many sdata there are */ 277 uint_t index; /* which sdata[index] */ 278 struct sec_data *sdata; 279 } sv_secinfo_t; 280 281 /* 282 * Hash bucket for the mi's open owner list (mi_oo_list). 283 */ 284 typedef struct nfs4_oo_hash_bucket { 285 list_t b_oo_hash_list; 286 kmutex_t b_lock; 287 } nfs4_oo_hash_bucket_t; 288 289 /* 290 * Global array of ctags. 291 */ 292 extern ctag_t nfs4_ctags[]; 293 294 typedef enum nfs4_tag_type { 295 TAG_NONE, 296 TAG_ACCESS, 297 TAG_CLOSE, 298 TAG_CLOSE_LOST, 299 TAG_CLOSE_UNDO, 300 TAG_COMMIT, 301 TAG_DELEGRETURN, 302 TAG_FSINFO, 303 TAG_GET_SYMLINK, 304 TAG_GETATTR, 305 TAG_INACTIVE, 306 TAG_LINK, 307 TAG_LOCK, 308 TAG_LOCK_RECLAIM, 309 TAG_LOCK_RESEND, 310 TAG_LOCK_REINSTATE, 311 TAG_LOCK_UNKNOWN, 312 TAG_LOCKT, 313 TAG_LOCKU, 314 TAG_LOCKU_RESEND, 315 TAG_LOCKU_REINSTATE, 316 TAG_LOOKUP, 317 TAG_LOOKUP_PARENT, 318 TAG_LOOKUP_VALID, 319 TAG_LOOKUP_VPARENT, 320 TAG_MKDIR, 321 TAG_MKNOD, 322 TAG_MOUNT, 323 TAG_OPEN, 324 TAG_OPEN_CONFIRM, 325 TAG_OPEN_CONFIRM_LOST, 326 TAG_OPEN_DG, 327 TAG_OPEN_DG_LOST, 328 TAG_OPEN_LOST, 329 TAG_OPENATTR, 330 TAG_PATHCONF, 331 TAG_PUTROOTFH, 332 TAG_READ, 333 TAG_READAHEAD, 334 TAG_READDIR, 335 TAG_READLINK, 336 TAG_RELOCK, 337 TAG_REMAP_LOOKUP, 338 TAG_REMAP_LOOKUP_AD, 339 TAG_REMAP_LOOKUP_NA, 340 TAG_REMAP_MOUNT, 341 TAG_RMDIR, 342 TAG_REMOVE, 343 TAG_RENAME, 344 TAG_RENAME_VFH, 345 TAG_RENEW, 346 TAG_REOPEN, 347 TAG_REOPEN_LOST, 348 TAG_SECINFO, 349 TAG_SETATTR, 350 TAG_SETCLIENTID, 351 TAG_SETCLIENTID_CF, 352 TAG_SYMLINK, 353 TAG_WRITE 354 } nfs4_tag_type_t; 355 356 #define NFS4_TAG_INITIALIZER { \ 357 {TAG_NONE, "", \ 358 {0x20202020, 0x20202020, 0x20202020}}, \ 359 {TAG_ACCESS, "access", \ 360 {0x61636365, 0x73732020, 0x20202020}}, \ 361 {TAG_CLOSE, "close", \ 362 {0x636c6f73, 0x65202020, 0x20202020}}, \ 363 {TAG_CLOSE_LOST, "lost close", \ 364 {0x6c6f7374, 0x20636c6f, 0x73652020}}, \ 365 {TAG_CLOSE_UNDO, "undo close", \ 366 {0x756e646f, 0x20636c6f, 0x73652020}}, \ 367 {TAG_COMMIT, "commit", \ 368 {0x636f6d6d, 0x69742020, 0x20202020}}, \ 369 {TAG_DELEGRETURN, "delegreturn", \ 370 {0x64656c65, 0x67726574, 0x75726e20}}, \ 371 {TAG_FSINFO, "fsinfo", \ 372 {0x6673696e, 0x666f2020, 0x20202020}}, \ 373 {TAG_GET_SYMLINK, "get symlink text", \ 374 {0x67657420, 0x736c6e6b, 0x20747874}}, \ 375 {TAG_GETATTR, "getattr", \ 376 {0x67657461, 0x74747220, 0x20202020}}, \ 377 {TAG_INACTIVE, "inactive", \ 378 {0x696e6163, 0x74697665, 0x20202020}}, \ 379 {TAG_LINK, "link", \ 380 {0x6c696e6b, 0x20202020, 0x20202020}}, \ 381 {TAG_LOCK, "lock", \ 382 {0x6c6f636b, 0x20202020, 0x20202020}}, \ 383 {TAG_LOCK_RECLAIM, "reclaim lock", \ 384 {0x7265636c, 0x61696d20, 0x6c6f636b}}, \ 385 {TAG_LOCK_RESEND, "resend lock", \ 386 {0x72657365, 0x6e64206c, 0x6f636b20}}, \ 387 {TAG_LOCK_REINSTATE, "reinstate lock", \ 388 {0x7265696e, 0x7374206c, 0x6f636b20}}, \ 389 {TAG_LOCK_UNKNOWN, "unknown lock", \ 390 {0x756e6b6e, 0x6f776e20, 0x6c6f636b}}, \ 391 {TAG_LOCKT, "lock test", \ 392 {0x6c6f636b, 0x5f746573, 0x74202020}}, \ 393 {TAG_LOCKU, "unlock", \ 394 {0x756e6c6f, 0x636b2020, 0x20202020}}, \ 395 {TAG_LOCKU_RESEND, "resend locku", \ 396 {0x72657365, 0x6e64206c, 0x6f636b75}}, \ 397 {TAG_LOCKU_REINSTATE, "reinstate unlock", \ 398 {0x7265696e, 0x73742075, 0x6e6c636b}}, \ 399 {TAG_LOOKUP, "lookup", \ 400 {0x6c6f6f6b, 0x75702020, 0x20202020}}, \ 401 {TAG_LOOKUP_PARENT, "lookup parent", \ 402 {0x6c6f6f6b, 0x75702070, 0x6172656e}}, \ 403 {TAG_LOOKUP_VALID, "lookup valid", \ 404 {0x6c6f6f6b, 0x75702076, 0x616c6964}}, \ 405 {TAG_LOOKUP_VPARENT, "lookup valid parent", \ 406 {0x6c6f6f6b, 0x766c6420, 0x7061726e}}, \ 407 {TAG_MKDIR, "mkdir", \ 408 {0x6d6b6469, 0x72202020, 0x20202020}}, \ 409 {TAG_MKNOD, "mknod", \ 410 {0x6d6b6e6f, 0x64202020, 0x20202020}}, \ 411 {TAG_MOUNT, "mount", \ 412 {0x6d6f756e, 0x74202020, 0x20202020}}, \ 413 {TAG_OPEN, "open", \ 414 {0x6f70656e, 0x20202020, 0x20202020}}, \ 415 {TAG_OPEN_CONFIRM, "open confirm", \ 416 {0x6f70656e, 0x5f636f6e, 0x6669726d}}, \ 417 {TAG_OPEN_CONFIRM_LOST, "lost open confirm", \ 418 {0x6c6f7374, 0x206f7065, 0x6e5f636f}}, \ 419 {TAG_OPEN_DG, "open downgrade", \ 420 {0x6f70656e, 0x20646772, 0x61646520}}, \ 421 {TAG_OPEN_DG_LOST, "lost open downgrade", \ 422 {0x6c737420, 0x6f70656e, 0x20646772}}, \ 423 {TAG_OPEN_LOST, "lost open", \ 424 {0x6c6f7374, 0x206f7065, 0x6e202020}}, \ 425 {TAG_OPENATTR, "openattr", \ 426 {0x6f70656e, 0x61747472, 0x20202020}}, \ 427 {TAG_PATHCONF, "pathhconf", \ 428 {0x70617468, 0x636f6e66, 0x20202020}}, \ 429 {TAG_PUTROOTFH, "putrootfh", \ 430 {0x70757472, 0x6f6f7466, 0x68202020}}, \ 431 {TAG_READ, "read", \ 432 {0x72656164, 0x20202020, 0x20202020}}, \ 433 {TAG_READAHEAD, "readahead", \ 434 {0x72656164, 0x61686561, 0x64202020}}, \ 435 {TAG_READDIR, "readdir", \ 436 {0x72656164, 0x64697220, 0x20202020}}, \ 437 {TAG_READLINK, "readlink", \ 438 {0x72656164, 0x6c696e6b, 0x20202020}}, \ 439 {TAG_RELOCK, "relock", \ 440 {0x72656c6f, 0x636b2020, 0x20202020}}, \ 441 {TAG_REMAP_LOOKUP, "remap lookup", \ 442 {0x72656d61, 0x70206c6f, 0x6f6b7570}}, \ 443 {TAG_REMAP_LOOKUP_AD, "remap lookup attr dir", \ 444 {0x72656d70, 0x206c6b75, 0x70206164}}, \ 445 {TAG_REMAP_LOOKUP_NA, "remap lookup named attrs", \ 446 {0x72656d70, 0x206c6b75, 0x70206e61}}, \ 447 {TAG_REMAP_MOUNT, "remap mount", \ 448 {0x72656d61, 0x70206d6f, 0x756e7420}}, \ 449 {TAG_RMDIR, "rmdir", \ 450 {0x726d6469, 0x72202020, 0x20202020}}, \ 451 {TAG_REMOVE, "remove", \ 452 {0x72656d6f, 0x76652020, 0x20202020}}, \ 453 {TAG_RENAME, "rename", \ 454 {0x72656e61, 0x6d652020, 0x20202020}}, \ 455 {TAG_RENAME_VFH, "rename volatile fh", \ 456 {0x72656e61, 0x6d652028, 0x76666829}}, \ 457 {TAG_RENEW, "renew", \ 458 {0x72656e65, 0x77202020, 0x20202020}}, \ 459 {TAG_REOPEN, "reopen", \ 460 {0x72656f70, 0x656e2020, 0x20202020}}, \ 461 {TAG_REOPEN_LOST, "lost reopen", \ 462 {0x6c6f7374, 0x2072656f, 0x70656e20}}, \ 463 {TAG_SECINFO, "secinfo", \ 464 {0x73656369, 0x6e666f20, 0x20202020}}, \ 465 {TAG_SETATTR, "setattr", \ 466 {0x73657461, 0x74747220, 0x20202020}}, \ 467 {TAG_SETCLIENTID, "setclientid", \ 468 {0x73657463, 0x6c69656e, 0x74696420}}, \ 469 {TAG_SETCLIENTID_CF, "setclientid_confirm", \ 470 {0x73636c6e, 0x7469645f, 0x636f6e66}}, \ 471 {TAG_SYMLINK, "symlink", \ 472 {0x73796d6c, 0x696e6b20, 0x20202020}}, \ 473 {TAG_WRITE, "write", \ 474 {0x77726974, 0x65202020, 0x20202020}} \ 475 } 476 477 /* 478 * These flags are for differentiating the search criterian for 479 * find_open_owner(). The comparison is done with the open_owners's 480 * 'oo_just_created' flag. 481 */ 482 #define NFS4_PERM_CREATED 0x0 483 #define NFS4_JUST_CREATED 0x1 484 485 /* 486 * Hashed by the cr_uid and cr_ruid of credential 'oo_cred'. 'oo_cred_otw' 487 * is stored upon a successful OPEN. This is needed when the user's effective 488 * and real uid's don't match. The 'oo_cred_otw' overrides the credential 489 * passed down by VFS for async read/write, commit, lock, and close operations. 490 * 491 * The oo_ref_count keeps track the number of active references on this 492 * data structure + number of nfs4_open_streams point to this structure. 493 * 494 * 'oo_valid' tells whether this stuct is about to be freed or not. 495 * 496 * 'oo_just_created' tells us whether this struct has just been created but 497 * not been fully finalized (that is created upon an OPEN request and 498 * finalized upon the OPEN success). 499 * 500 * The 'oo_seqid_inuse' is for the open seqid synchronization. If a thread 501 * is currently using the open owner and it's open_seqid, then it sets the 502 * oo_seqid_inuse to true if it currently is not set. If it is set then it 503 * does a cv_wait on the oo_cv_seqid_sync condition variable. When the thread 504 * is done it unsets the oo_seqid_inuse and does a cv_signal to wake a process 505 * waiting on the condition variable. 506 * 507 * 'oo_last_good_seqid' is the last valid seqid this open owner sent OTW, 508 * and 'oo_last_good_op' is the operation that issued the last valid seqid. 509 * 510 * Lock ordering: 511 * mntinfo4_t::mi_lock > oo_lock (for searching mi_oo_list) 512 * 513 * oo_seqid_inuse > mntinfo4_t::mi_lock 514 * oo_seqid_inuse > rnode4_t::r_statelock 515 * oo_seqid_inuse > rnode4_t::r_statev4_lock 516 * oo_seqid_inuse > nfs4_open_stream_t::os_sync_lock 517 * 518 * The 'oo_seqid_inuse'/'oo_cv_seqid_sync' protects: 519 * oo_last_good_op 520 * oo_last_good_seqid 521 * oo_name 522 * oo_seqid 523 * 524 * The 'oo_lock' protects: 525 * oo_cred 526 * oo_cred_otw 527 * oo_foo_node 528 * oo_hash_node 529 * oo_just_created 530 * oo_ref_count 531 * oo_valid 532 */ 533 534 typedef struct nfs4_open_owner { 535 cred_t *oo_cred; 536 int oo_ref_count; 537 int oo_valid; 538 int oo_just_created; 539 seqid4 oo_seqid; 540 seqid4 oo_last_good_seqid; 541 nfs4_tag_type_t oo_last_good_op; 542 unsigned oo_seqid_inuse:1; 543 cred_t *oo_cred_otw; 544 kcondvar_t oo_cv_seqid_sync; 545 /* 546 * Fix this to always be 8 bytes 547 */ 548 uint64_t oo_name; 549 list_node_t oo_hash_node; 550 list_node_t oo_foo_node; 551 kmutex_t oo_lock; 552 } nfs4_open_owner_t; 553 554 /* 555 * Static server information. 556 * These fields are read-only once they are initialized: 557 * sv_addr 558 * sv_dhsec 559 * sv_hostname 560 * sv_hostnamelen 561 * sv_knconf 562 * sv_next 563 * sv_origknconf 564 * 565 * These fields are protected by sv_lock: 566 * sv_currsec 567 * sv_fhandle 568 * sv_flags 569 * sv_fsid 570 * sv_path 571 * sv_pathlen 572 * sv_pfhandle 573 * sv_save_secinfo 574 * sv_savesec 575 * sv_secdata 576 * sv_secinfo 577 * sv_supp_attrs 578 * 579 * Lock ordering: 580 * nfs_rtable4_lock > sv_lock 581 * rnode4_t::r_statelock > sv_lock 582 */ 583 typedef struct servinfo4 { 584 struct knetconfig *sv_knconf; /* bound TLI fd */ 585 struct knetconfig *sv_origknconf; /* For RDMA save orig knconf */ 586 struct netbuf sv_addr; /* server's address */ 587 nfs4_fhandle_t sv_fhandle; /* this server's filehandle */ 588 nfs4_fhandle_t sv_pfhandle; /* parent dir filehandle */ 589 int sv_pathlen; /* Length of server path */ 590 char *sv_path; /* Path name on server */ 591 uint32_t sv_flags; /* flags for this server */ 592 sec_data_t *sv_secdata; /* client initiated security data */ 593 sv_secinfo_t *sv_secinfo; /* server security information */ 594 sec_data_t *sv_currsec; /* security data currently used; */ 595 /* points to one of the sec_data */ 596 /* entries in sv_secinfo */ 597 sv_secinfo_t *sv_save_secinfo; /* saved secinfo */ 598 sec_data_t *sv_savesec; /* saved security data */ 599 sec_data_t *sv_dhsec; /* AUTH_DH data from the user land */ 600 char *sv_hostname; /* server's hostname */ 601 int sv_hostnamelen; /* server's hostname length */ 602 fattr4_fsid sv_fsid; /* fsid of shared obj */ 603 fattr4_supported_attrs sv_supp_attrs; 604 struct servinfo4 *sv_next; /* next in list */ 605 nfs_rwlock_t sv_lock; 606 } servinfo4_t; 607 608 /* sv_flags fields */ 609 #define SV4_TRYSECINFO 0x001 /* try secinfo data from the server */ 610 #define SV4_TRYSECDEFAULT 0x002 /* try a default flavor */ 611 #define SV4_NOTINUSE 0x004 /* servinfo4_t had fatal errors */ 612 #define SV4_ROOT_STALE 0x008 /* root vnode got ESTALE */ 613 614 /* 615 * Lock call types. See nfs4frlock(). 616 */ 617 typedef enum nfs4_lock_call_type { 618 NFS4_LCK_CTYPE_NORM, 619 NFS4_LCK_CTYPE_RECLAIM, 620 NFS4_LCK_CTYPE_RESEND, 621 NFS4_LCK_CTYPE_REINSTATE 622 } nfs4_lock_call_type_t; 623 624 /* 625 * This structure holds the information for a lost open/close/open downgrade/ 626 * lock/locku request. It is also used for requests that are queued up so 627 * that the recovery thread can release server state after a forced 628 * unmount. 629 * "lr_op" is 0 if the struct is uninitialized. Otherwise, it is set to 630 * the proper OP_* nfs_opnum4 number. The other fields contain information 631 * to reconstruct the call. 632 * 633 * lr_dvp is used for OPENs with CREATE, so that we can do a PUTFH of the 634 * parent directroy without relying on vtodv (since we may not have a vp 635 * for the file we wish to create). 636 * 637 * lr_putfirst means that the request should go to the front of the resend 638 * queue, rather than the end. 639 */ 640 typedef struct nfs4_lost_rqst { 641 list_node_t lr_node; 642 nfs_opnum4 lr_op; 643 vnode_t *lr_vp; 644 vnode_t *lr_dvp; 645 nfs4_open_owner_t *lr_oop; 646 struct nfs4_open_stream *lr_osp; 647 struct nfs4_lock_owner *lr_lop; 648 cred_t *lr_cr; 649 flock64_t *lr_flk; 650 bool_t lr_putfirst; 651 union { 652 struct { 653 nfs4_lock_call_type_t lru_ctype; 654 nfs_lock_type4 lru_locktype; 655 } lru_lockargs; /* LOCK, LOCKU */ 656 struct { 657 uint32_t lru_oaccess; 658 uint32_t lru_odeny; 659 enum open_claim_type4 lru_oclaim; 660 stateid4 lru_ostateid; /* reopen only */ 661 component4 lru_ofile; 662 } lru_open_args; 663 struct { 664 uint32_t lru_dg_access; 665 uint32_t lru_dg_deny; 666 } lru_open_dg_args; 667 } nfs4_lr_u; 668 } nfs4_lost_rqst_t; 669 670 #define lr_oacc nfs4_lr_u.lru_open_args.lru_oaccess 671 #define lr_odeny nfs4_lr_u.lru_open_args.lru_odeny 672 #define lr_oclaim nfs4_lr_u.lru_open_args.lru_oclaim 673 #define lr_ostateid nfs4_lr_u.lru_open_args.lru_ostateid 674 #define lr_ofile nfs4_lr_u.lru_open_args.lru_ofile 675 #define lr_dg_acc nfs4_lr_u.lru_open_dg_args.lru_dg_access 676 #define lr_dg_deny nfs4_lr_u.lru_open_dg_args.lru_dg_deny 677 #define lr_ctype nfs4_lr_u.lru_lockargs.lru_ctype 678 #define lr_locktype nfs4_lr_u.lru_lockargs.lru_locktype 679 680 /* 681 * Recovery actions. Some actions can imply further recovery using a 682 * different recovery action (e.g., recovering the clientid leads to 683 * recovering open files and locks). 684 */ 685 686 typedef enum { 687 NR_UNUSED, 688 NR_CLIENTID, 689 NR_OPENFILES, 690 NR_FHEXPIRED, 691 NR_FAILOVER, 692 NR_WRONGSEC, 693 NR_EXPIRED, 694 NR_BAD_STATEID, 695 NR_BADHANDLE, 696 NR_BAD_SEQID, 697 NR_OLDSTATEID, 698 NR_GRACE, 699 NR_DELAY, 700 NR_LOST_LOCK, 701 NR_LOST_STATE_RQST, 702 NR_STALE 703 } nfs4_recov_t; 704 705 /* 706 * Administrative and debug message framework. 707 */ 708 709 #define NFS4_MSG_MAX 100 710 extern int nfs4_msg_max; 711 712 typedef enum { 713 RE_BAD_SEQID, 714 RE_BADHANDLE, 715 RE_CLIENTID, 716 RE_DEAD_FILE, 717 RE_END, 718 RE_FAIL_RELOCK, 719 RE_FAIL_REMAP_LEN, 720 RE_FAIL_REMAP_OP, 721 RE_FAILOVER, 722 RE_FILE_DIFF, 723 RE_LOST_STATE, 724 RE_OPENS_CHANGED, 725 RE_SIGLOST, 726 RE_SIGLOST_NO_DUMP, 727 RE_START, 728 RE_UNEXPECTED_ACTION, 729 RE_UNEXPECTED_ERRNO, 730 RE_UNEXPECTED_STATUS, 731 RE_WRONGSEC, 732 RE_LOST_STATE_BAD_OP 733 } nfs4_event_type_t; 734 735 typedef enum { 736 RFS_NO_INSPECT, 737 RFS_INSPECT 738 } nfs4_fact_status_t; 739 740 typedef enum { 741 RF_BADOWNER, 742 RF_ERR, 743 RF_RENEW_EXPIRED, 744 RF_SRV_NOT_RESPOND, 745 RF_SRV_OK, 746 RF_SRVS_NOT_RESPOND, 747 RF_SRVS_OK, 748 RF_DELMAP_CB_ERR, 749 RF_SENDQ_FULL 750 } nfs4_fact_type_t; 751 752 typedef enum { 753 NFS4_MS_DUMP, 754 NFS4_MS_NO_DUMP 755 } nfs4_msg_status_t; 756 757 typedef struct nfs4_rfact { 758 nfs4_fact_type_t rf_type; 759 nfs4_fact_status_t rf_status; 760 bool_t rf_reboot; 761 nfs4_recov_t rf_action; 762 nfs_opnum4 rf_op; 763 nfsstat4 rf_stat4; 764 timespec_t rf_time; 765 int rf_error; 766 struct rnode4 *rf_rp1; 767 char *rf_char1; 768 } nfs4_rfact_t; 769 770 typedef struct nfs4_revent { 771 nfs4_event_type_t re_type; 772 nfsstat4 re_stat4; 773 uint_t re_uint; 774 pid_t re_pid; 775 struct mntinfo4 *re_mi; 776 struct rnode4 *re_rp1; 777 struct rnode4 *re_rp2; 778 char *re_char1; 779 char *re_char2; 780 nfs4_tag_type_t re_tag1; 781 nfs4_tag_type_t re_tag2; 782 seqid4 re_seqid1; 783 seqid4 re_seqid2; 784 } nfs4_revent_t; 785 786 typedef enum { 787 RM_EVENT, 788 RM_FACT 789 } nfs4_msg_type_t; 790 791 typedef struct nfs4_debug_msg { 792 timespec_t msg_time; 793 nfs4_msg_type_t msg_type; 794 char *msg_srv; 795 char *msg_mntpt; 796 union { 797 nfs4_rfact_t msg_fact; 798 nfs4_revent_t msg_event; 799 } rmsg_u; 800 nfs4_msg_status_t msg_status; 801 list_node_t msg_node; 802 } nfs4_debug_msg_t; 803 804 /* 805 * NFS private data per mounted file system 806 * The mi_lock mutex protects the following fields: 807 * mi_flags 808 * mi_in_recovery 809 * mi_recovflags 810 * mi_recovthread 811 * mi_error 812 * mi_printed 813 * mi_down 814 * mi_stsize 815 * mi_curread 816 * mi_curwrite 817 * mi_timers 818 * mi_curr_serv 819 * mi_klmconfig 820 * mi_oo_list 821 * mi_foo_list 822 * mi_foo_num 823 * mi_foo_max 824 * mi_lost_state 825 * mi_bseqid_list 826 * mi_ephemeral 827 * mi_ephemeral_tree 828 * 829 * Normally the netconfig information for the mount comes from 830 * mi_curr_serv and mi_klmconfig is NULL. If NLM calls need to use a 831 * different transport, mi_klmconfig contains the necessary netconfig 832 * information. 833 * 834 * The mi_async_lock mutex protects the following fields: 835 * mi_async_reqs 836 * mi_async_req_count 837 * mi_async_tail 838 * mi_async_curr 839 * mi_async_clusters 840 * mi_async_init_clusters 841 * mi_threads 842 * mi_inactive_thread 843 * mi_manager_thread 844 * 845 * The nfs4_server_t::s_lock protects the following fields: 846 * mi_clientid 847 * mi_clientid_next 848 * mi_clientid_prev 849 * mi_open_files 850 * mi_srvsettime 851 * 852 * The mntinfo4_t::mi_recovlock protects the following fields: 853 * mi_srvsettime 854 * 855 * Locking order: 856 * mi4_globals::mig_lock > mi_async_lock 857 * mi_async_lock > nfs4_server_t::s_lock > mi_lock 858 * mi_recovlock > mi_rename_lock > nfs_rtable4_lock 859 * nfs4_server_t::s_recovlock > mi_recovlock 860 * rnode4_t::r_rwlock > mi_rename_lock 861 * nfs_rtable4_lock > mi_lock 862 * nfs4_server_t::s_lock > mi_msg_list_lock 863 * mi_recovlock > nfs4_server_t::s_lock 864 * mi_recovlock > nfs4_server_lst_lock 865 * 866 * The 'mi_oo_list' represents the hash buckets that contain the 867 * nfs4_open_owenrs for this particular mntinfo4. 868 * 869 * The 'mi_foo_list' represents the freed nfs4_open_owners for this mntinfo4. 870 * 'mi_foo_num' is the current number of freed open owners on the list, 871 * 'mi_foo_max' is the maximum number of freed open owners that are allowable 872 * on the list. 873 * 874 * mi_rootfh and mi_srvparentfh are read-only once created, but that just 875 * refers to the pointer. The contents must be updated to keep in sync 876 * with mi_curr_serv. 877 * 878 * The mi_msg_list_lock protects against adding/deleting entries to the 879 * mi_msg_list, and also the updating/retrieving of mi_lease_period; 880 * 881 * 'mi_zone' is initialized at structure creation time, and never 882 * changes; it may be read without a lock. 883 * 884 * mi_zone_node is linkage into the mi4_globals.mig_list, and is 885 * protected by mi4_globals.mig_list_lock. 886 * 887 * If MI4_EPHEMERAL is set in mi_flags, then mi_ephemeral points to an 888 * ephemeral structure for this ephemeral mount point. It can not be 889 * NULL. Also, mi_ephemeral_tree points to the root of the ephemeral 890 * tree. 891 * 892 * If MI4_EPHEMERAL is not set in mi_flags, then mi_ephemeral has 893 * to be NULL. If mi_ephemeral_tree is non-NULL, then this node 894 * is the enclosing mntinfo4 for the ephemeral tree. 895 */ 896 struct zone; 897 struct nfs4_ephemeral; 898 struct nfs4_ephemeral_tree; 899 typedef struct mntinfo4 { 900 kmutex_t mi_lock; /* protects mntinfo4 fields */ 901 struct servinfo4 *mi_servers; /* server list */ 902 struct servinfo4 *mi_curr_serv; /* current server */ 903 struct nfs4_sharedfh *mi_rootfh; /* root filehandle */ 904 struct nfs4_sharedfh *mi_srvparentfh; /* root's parent on server */ 905 kcondvar_t mi_failover_cv; /* failover synchronization */ 906 struct vfs *mi_vfsp; /* back pointer to vfs */ 907 enum vtype mi_type; /* file type of the root vnode */ 908 uint_t mi_flags; /* see below */ 909 uint_t mi_recovflags; /* if recovery active; see below */ 910 kthread_t *mi_recovthread; /* active recov thread or NULL */ 911 uint_t mi_error; /* only set/valid when MI4_RECOV_FAIL */ 912 /* is set in mi_flags */ 913 int mi_tsize; /* transfer size (bytes) */ 914 /* really read size */ 915 int mi_stsize; /* server's max transfer size (bytes) */ 916 /* really write size */ 917 int mi_timeo; /* inital timeout in 10th sec */ 918 int mi_retrans; /* times to retry request */ 919 hrtime_t mi_acregmin; /* min time to hold cached file attr */ 920 hrtime_t mi_acregmax; /* max time to hold cached file attr */ 921 hrtime_t mi_acdirmin; /* min time to hold cached dir attr */ 922 hrtime_t mi_acdirmax; /* max time to hold cached dir attr */ 923 len_t mi_maxfilesize; /* for pathconf _PC_FILESIZEBITS */ 924 int mi_curread; /* current read size */ 925 int mi_curwrite; /* current write size */ 926 uint_t mi_count; /* ref count */ 927 /* 928 * async I/O management. There may be a pool of threads to handle 929 * async I/O requests, etc., plus there is always one thread that 930 * handles over-the-wire requests for VOP_INACTIVE. The async pool 931 * can also help out with VOP_INACTIVE. 932 */ 933 struct nfs4_async_reqs *mi_async_reqs[NFS4_ASYNC_TYPES]; 934 struct nfs4_async_reqs *mi_async_tail[NFS4_ASYNC_TYPES]; 935 struct nfs4_async_reqs **mi_async_curr; /* current async queue */ 936 uint_t mi_async_clusters[NFS4_ASYNC_TYPES]; 937 uint_t mi_async_init_clusters; 938 uint_t mi_async_req_count; /* # outstanding work requests */ 939 kcondvar_t mi_async_reqs_cv; /* signaled when there's work */ 940 ushort_t mi_threads; /* number of active async threads */ 941 ushort_t mi_max_threads; /* max number of async threads */ 942 kthread_t *mi_manager_thread; /* async manager thread id */ 943 kthread_t *mi_inactive_thread; /* inactive thread id */ 944 kcondvar_t mi_inact_req_cv; /* notify VOP_INACTIVE thread */ 945 kcondvar_t mi_async_work_cv; /* tell workers to work */ 946 kcondvar_t mi_async_cv; /* all pool threads exited */ 947 kmutex_t mi_async_lock; 948 /* 949 * Other stuff 950 */ 951 struct pathcnf *mi_pathconf; /* static pathconf kludge */ 952 rpcprog_t mi_prog; /* RPC program number */ 953 rpcvers_t mi_vers; /* RPC program version number */ 954 char **mi_rfsnames; /* mapping to proc names */ 955 kstat_named_t *mi_reqs; /* count of requests */ 956 clock_t mi_printftime; /* last error printf time */ 957 nfs_rwlock_t mi_recovlock; /* separate ops from recovery (v4) */ 958 time_t mi_grace_wait; /* non-zero represents time to wait */ 959 time_t mi_srvsettime; /* when we switched nfs4_server_t */ 960 nfs_rwlock_t mi_rename_lock; /* atomic volfh rename */ 961 struct nfs4_fname *mi_fname; /* root fname */ 962 list_t mi_lost_state; /* resend list */ 963 list_t mi_bseqid_list; /* bad seqid list */ 964 /* 965 * Client Side Failover stats 966 */ 967 uint_t mi_noresponse; /* server not responding count */ 968 uint_t mi_failover; /* failover to new server count */ 969 uint_t mi_remap; /* remap to new server count */ 970 /* 971 * Kstat statistics 972 */ 973 struct kstat *mi_io_kstats; 974 struct kstat *mi_ro_kstats; 975 kstat_t *mi_recov_ksp; /* ptr to the recovery kstat */ 976 977 /* 978 * Volatile fh flags (nfsv4) 979 */ 980 uint32_t mi_fh_expire_type; 981 /* 982 * Lease Management 983 */ 984 struct mntinfo4 *mi_clientid_next; 985 struct mntinfo4 *mi_clientid_prev; 986 clientid4 mi_clientid; /* redundant info found in nfs4_server */ 987 int mi_open_files; /* count of open files */ 988 int mi_in_recovery; /* count of recovery instances */ 989 kcondvar_t mi_cv_in_recov; /* cv for recovery threads */ 990 /* 991 * Open owner stuff. 992 */ 993 struct nfs4_oo_hash_bucket mi_oo_list[NFS4_NUM_OO_BUCKETS]; 994 list_t mi_foo_list; 995 int mi_foo_num; 996 int mi_foo_max; 997 /* 998 * Shared filehandle pool. 999 */ 1000 nfs_rwlock_t mi_fh_lock; 1001 avl_tree_t mi_filehandles; 1002 1003 /* 1004 * Debug message queue. 1005 */ 1006 list_t mi_msg_list; 1007 int mi_msg_count; 1008 time_t mi_lease_period; 1009 /* 1010 * not guaranteed to be accurate. 1011 * only should be used by debug queue. 1012 */ 1013 kmutex_t mi_msg_list_lock; 1014 /* 1015 * Zones support. 1016 */ 1017 struct zone *mi_zone; /* Zone mounted in */ 1018 list_node_t mi_zone_node; /* linkage into per-zone mi list */ 1019 1020 /* 1021 * Links for unmounting ephemeral mounts. 1022 */ 1023 struct nfs4_ephemeral *mi_ephemeral; 1024 struct nfs4_ephemeral_tree *mi_ephemeral_tree; 1025 } mntinfo4_t; 1026 1027 /* 1028 * The values for mi_flags. 1029 * 1030 * MI4_HARD hard or soft mount 1031 * MI4_PRINTED responding message printed 1032 * MI4_INT allow INTR on hard mount 1033 * MI4_DOWN server is down 1034 * MI4_NOAC don't cache attributes 1035 * MI4_NOCTO no close-to-open consistency 1036 * MI4_LLOCK local locking only (no lockmgr) 1037 * MI4_GRPID System V group id inheritance 1038 * MI4_SHUTDOWN System is rebooting or shutting down 1039 * MI4_LINK server supports link 1040 * MI4_SYMLINK server supports symlink 1041 * MI4_EPHEMERAL_RECURSED an ephemeral mount being unmounted 1042 * due to a recursive call - no need 1043 * for additional recursion 1044 * MI4_ACL server supports NFSv4 ACLs 1045 * MI4_MIRRORMOUNT is a mirrormount 1046 * MI4_NOPRINT don't print messages 1047 * MI4_DIRECTIO do direct I/O 1048 * MI4_RECOV_ACTIV filesystem has recovery a thread 1049 * MI4_REMOVE_ON_LAST_CLOSE remove from server's list 1050 * MI4_RECOV_FAIL client recovery failed 1051 * MI4_PUBLIC public/url option used 1052 * MI4_MOUNTING mount in progress, don't failover 1053 * MI4_POSIX_LOCK if server is using POSIX locking 1054 * MI4_LOCK_DEBUG cmn_err'd posix lock err msg 1055 * MI4_DEAD zone has released it 1056 * MI4_INACTIVE_IDLE inactive thread idle 1057 * MI4_BADOWNER_DEBUG badowner error msg per mount 1058 * MI4_ASYNC_MGR_STOP tell async manager to die 1059 * MI4_TIMEDOUT saw a timeout during zone shutdown 1060 * MI4_EPHEMERAL is an ephemeral mount 1061 */ 1062 #define MI4_HARD 0x1 1063 #define MI4_PRINTED 0x2 1064 #define MI4_INT 0x4 1065 #define MI4_DOWN 0x8 1066 #define MI4_NOAC 0x10 1067 #define MI4_NOCTO 0x20 1068 #define MI4_LLOCK 0x80 1069 #define MI4_GRPID 0x100 1070 #define MI4_SHUTDOWN 0x200 1071 #define MI4_LINK 0x400 1072 #define MI4_SYMLINK 0x800 1073 #define MI4_EPHEMERAL_RECURSED 0x1000 1074 #define MI4_ACL 0x2000 1075 /* MI4_MIRRORMOUNT is also defined in nfsstat.c */ 1076 #define MI4_MIRRORMOUNT 0x4000 1077 /* 0x8000 is available */ 1078 /* 0x10000 is available */ 1079 #define MI4_NOPRINT 0x20000 1080 #define MI4_DIRECTIO 0x40000 1081 /* 0x80000 is available */ 1082 #define MI4_RECOV_ACTIV 0x100000 1083 #define MI4_REMOVE_ON_LAST_CLOSE 0x200000 1084 #define MI4_RECOV_FAIL 0x400000 1085 #define MI4_PUBLIC 0x800000 1086 #define MI4_MOUNTING 0x1000000 1087 #define MI4_POSIX_LOCK 0x2000000 1088 #define MI4_LOCK_DEBUG 0x4000000 1089 #define MI4_DEAD 0x8000000 1090 #define MI4_INACTIVE_IDLE 0x10000000 1091 #define MI4_BADOWNER_DEBUG 0x20000000 1092 #define MI4_ASYNC_MGR_STOP 0x40000000 1093 #define MI4_TIMEDOUT 0x80000000 1094 1095 /* 1096 * Note that when we add referrals, then MI4_EPHEMERAL 1097 * will be MI4_MIRRORMOUNT | MI4_REFERRAL. 1098 */ 1099 #define MI4_EPHEMERAL MI4_MIRRORMOUNT 1100 1101 #define INTR4(vp) (VTOMI4(vp)->mi_flags & MI4_INT) 1102 1103 #define FAILOVER_MOUNT4(mi) (mi->mi_servers->sv_next) 1104 1105 /* 1106 * Recovery flags. 1107 * 1108 * MI4R_NEED_CLIENTID is sort of redundant (it's the nfs4_server_t flag 1109 * that's important), but some flag is needed to indicate that recovery is 1110 * going on for the filesystem. 1111 */ 1112 #define MI4R_NEED_CLIENTID 0x1 1113 #define MI4R_REOPEN_FILES 0x2 1114 #define MI4R_NEED_SECINFO 0x4 1115 #define MI4R_NEED_NEW_SERVER 0x8 1116 #define MI4R_REMAP_FILES 0x10 1117 #define MI4R_SRV_REBOOT 0x20 /* server has rebooted */ 1118 #define MI4R_LOST_STATE 0x40 1119 #define MI4R_BAD_SEQID 0x80 1120 1121 #define MI4_HOLD(mi) { \ 1122 mi_hold(mi); \ 1123 } 1124 1125 #define MI4_RELE(mi) { \ 1126 mi_rele(mi); \ 1127 } 1128 1129 /* 1130 * vfs pointer to mount info 1131 */ 1132 #define VFTOMI4(vfsp) ((mntinfo4_t *)((vfsp)->vfs_data)) 1133 1134 /* 1135 * vnode pointer to mount info 1136 */ 1137 #define VTOMI4(vp) ((mntinfo4_t *)(((vp)->v_vfsp)->vfs_data)) 1138 1139 /* 1140 * Lease Management 1141 * 1142 * lease_valid is initially set to NFS4_LEASE_NOT_STARTED. This is when the 1143 * nfs4_server is first created. lease_valid is then set to 1144 * NFS4_LEASE_UNITIALIZED when the renew thread is started. The extra state of 1145 * NFS4_LEASE_NOT_STARTED is needed for client recovery (so we know if a thread 1146 * already exists when we do SETCLIENTID). lease_valid is then set to 1147 * NFS4_LEASE_VALID (if it is at NFS4_LEASE_UNITIALIZED) when a state creating 1148 * operation (OPEN) is done. lease_valid stays at NFS4_LEASE_VALID as long as 1149 * the lease is renewed. It is set to NFS4_LEASE_INVALID when the lease 1150 * expires. Client recovery is needed to set the lease back to 1151 * NFS4_LEASE_VALID from NFS4_LEASE_INVALID. 1152 * 1153 * The s_cred is the credential used to mount the first file system for this 1154 * server. It used as the credential for the renew thread's calls to the 1155 * server. 1156 * 1157 * The renew thread waits on the condition variable cv_thread_exit. If the cv 1158 * is signalled, then the thread knows it must check s_thread_exit to see if 1159 * it should exit. The cv is signaled when the last file system is unmounted 1160 * from a particular server. s_thread_exit is set to 0 upon thread startup, 1161 * and set to NFS4_THREAD_EXIT, when the last file system is unmounted thereby 1162 * telling the thread to exit. s_thread_exit is needed to avoid spurious 1163 * wakeups. 1164 * 1165 * state_ref_count is incremented every time a new file is opened and 1166 * decremented every time a file is closed otw. This keeps track of whether 1167 * the nfs4_server has state associated with it or not. 1168 * 1169 * s_refcnt is the reference count for storage management of the struct 1170 * itself. 1171 * 1172 * mntinfo4_list points to the doubly linked list of mntinfo4s that share 1173 * this nfs4_server (ie: <clientid, saddr> pair) in the current zone. This is 1174 * needed for a nfs4_server to get a mntinfo4 for use in rfs4call. 1175 * 1176 * s_recovlock is used to synchronize recovery operations. The thread 1177 * that is recovering the client must acquire it as a writer. If the 1178 * thread is using the clientid (including recovery operations on other 1179 * state), acquire it as a reader. 1180 * 1181 * The 's_otw_call_count' keeps track of the number of outstanding over the 1182 * wire requests for this structure. The struct will not go away as long 1183 * as this is non-zero (or s_refcnt is non-zero). 1184 * 1185 * The 's_cv_otw_count' is used in conjuntion with the 's_otw_call_count' 1186 * variable to let the renew thread when an outstanding otw request has 1187 * finished. 1188 * 1189 * 'zoneid' and 'zone_globals' are set at creation of this structure 1190 * and are read-only after that; no lock is required to read them. 1191 * 1192 * s_lock protects: everything except cv_thread_exit and s_recovlock. 1193 * 1194 * s_program is used as the index into the nfs4_callback_globals's 1195 * nfs4prog2server table. When a callback request comes in, we can 1196 * use that request's program number (minus NFS4_CALLBACK) as an index 1197 * into the nfs4prog2server. That entry will hold the nfs4_server_t ptr. 1198 * We can then access that nfs4_server_t and its 's_deleg_list' (its list of 1199 * delegated rnode4_ts). 1200 * 1201 * Lock order: 1202 * nfs4_server::s_lock > mntinfo4::mi_lock 1203 * nfs_rtable4_lock > s_lock 1204 * nfs4_server_lst_lock > s_lock 1205 * s_recovlock > s_lock 1206 */ 1207 struct nfs4_callback_globals; 1208 1209 typedef struct nfs4_server { 1210 struct nfs4_server *forw; 1211 struct nfs4_server *back; 1212 struct netbuf saddr; 1213 uint_t s_flags; /* see below */ 1214 uint_t s_refcnt; 1215 clientid4 clientid; /* what we get from server */ 1216 nfs_client_id4 clidtosend; /* what we send to server */ 1217 mntinfo4_t *mntinfo4_list; 1218 int lease_valid; 1219 time_t s_lease_time; 1220 time_t last_renewal_time; 1221 timespec_t propagation_delay; 1222 cred_t *s_cred; 1223 kcondvar_t cv_thread_exit; 1224 int s_thread_exit; 1225 int state_ref_count; 1226 int s_otw_call_count; 1227 kcondvar_t s_cv_otw_count; 1228 kcondvar_t s_clientid_pend; 1229 kmutex_t s_lock; 1230 list_t s_deleg_list; 1231 rpcprog_t s_program; 1232 nfs_rwlock_t s_recovlock; 1233 kcondvar_t wait_cb_null; /* used to wait for CB_NULL */ 1234 zoneid_t zoneid; /* zone using this nfs4_server_t */ 1235 struct nfs4_callback_globals *zone_globals; /* globals */ 1236 } nfs4_server_t; 1237 1238 /* nfs4_server flags */ 1239 #define N4S_CLIENTID_SET 1 /* server has our clientid */ 1240 #define N4S_CLIENTID_PEND 0x2 /* server doesn't have clientid */ 1241 #define N4S_CB_PINGED 0x4 /* server has sent us a CB_NULL */ 1242 #define N4S_CB_WAITER 0x8 /* is/has wait{ing/ed} for cb_null */ 1243 #define N4S_INSERTED 0x10 /* list has reference for server */ 1244 #define N4S_BADOWNER_DEBUG 0x20 /* bad owner err msg per client */ 1245 1246 #define N4S_CB_PAUSE_TIME 10000 /* Amount of time to pause (10ms) */ 1247 1248 struct lease_time_arg { 1249 time_t lease_time; 1250 }; 1251 1252 enum nfs4_delegreturn_policy { 1253 IMMEDIATE, 1254 FIRSTCLOSE, 1255 LASTCLOSE, 1256 INACTIVE 1257 }; 1258 1259 /* 1260 * Operation hints for the recovery framework (mostly). 1261 * 1262 * EXCEPTIONS: 1263 * OH_ACCESS, OH_GETACL, OH_GETATTR, OH_LOOKUP, OH_READDIR 1264 * These hints exist to allow user visit/readdir a R4SRVSTUB dir. 1265 * (dir represents the root of a server fs that has not yet been 1266 * mounted at client) 1267 */ 1268 typedef enum { 1269 OH_OTHER, 1270 OH_READ, 1271 OH_WRITE, 1272 OH_COMMIT, 1273 OH_VFH_RENAME, 1274 OH_MOUNT, 1275 OH_CLOSE, 1276 OH_LOCKU, 1277 OH_DELEGRETURN, 1278 OH_ACCESS, 1279 OH_GETACL, 1280 OH_GETATTR, 1281 OH_LOOKUP, 1282 OH_READDIR 1283 } nfs4_op_hint_t; 1284 1285 /* 1286 * This data structure is used to track ephemeral mounts for both 1287 * mirror mounts and referrals. 1288 * 1289 * Note that each nfs4_ephemeral can only have one other nfs4_ephemeral 1290 * pointing at it. So we don't need two backpointers to walk 1291 * back up the tree. 1292 * 1293 * An ephemeral tree is pointed to by an enclosing non-ephemeral 1294 * mntinfo4. The root is also pointed to by its ephemeral 1295 * mntinfo4. ne_child will get us back to it, while ne_prior 1296 * will get us back to the non-ephemeral mntinfo4. This is an 1297 * edge case we will need to be wary of when walking back up the 1298 * tree. 1299 * 1300 * The way we handle this edge case is to have ne_prior be NULL 1301 * for the root nfs4_ephemeral node. 1302 */ 1303 typedef struct nfs4_ephemeral { 1304 mntinfo4_t *ne_mount; /* who encloses us */ 1305 struct nfs4_ephemeral *ne_child; /* first child node */ 1306 struct nfs4_ephemeral *ne_peer; /* next sibling */ 1307 struct nfs4_ephemeral *ne_prior; /* who points at us */ 1308 time_t ne_ref_time; /* time last referenced */ 1309 uint_t ne_mount_to; /* timeout at */ 1310 int ne_state; /* used to traverse */ 1311 } nfs4_ephemeral_t; 1312 1313 /* 1314 * State for the node (set in ne_state): 1315 */ 1316 #define NFS4_EPHEMERAL_OK 0x0 1317 #define NFS4_EPHEMERAL_VISIT_CHILD 0x1 1318 #define NFS4_EPHEMERAL_VISIT_SIBLING 0x2 1319 #define NFS4_EPHEMERAL_PROCESS_ME 0x4 1320 #define NFS4_EPHEMERAL_CHILD_ERROR 0x8 1321 #define NFS4_EPHEMERAL_PEER_ERROR 0x10 1322 1323 /* 1324 * These are the locks used in processing ephemeral data: 1325 * 1326 * mi->mi_lock 1327 * 1328 * net->net_tree_lock 1329 * This lock is used to gate all tree operations. 1330 * If it is held, then no other process may 1331 * traverse the tree. This allows us to not 1332 * throw a hold on each vfs_t in the tree. 1333 * Can be held for a "long" time. 1334 * 1335 * net->net_cnt_lock 1336 * Used to protect refcnt and status. 1337 * Must be held for a really short time. 1338 * 1339 * nfs4_ephemeral_thread_lock 1340 * Is only held to create the harvester for the zone. 1341 * There is no ordering imposed on it. 1342 * Held for a really short time. 1343 * 1344 * Some further detail on the interactions: 1345 * 1346 * net_tree_lock controls access to net_root. Access needs to first be 1347 * attempted in a non-blocking check. 1348 * 1349 * net_cnt_lock controls access to net_refcnt and net_status. It must only be 1350 * held for very short periods of time, unless the refcnt is 0 and the status 1351 * is INVALID. 1352 * 1353 * Before a caller can grab net_tree_lock, it must first grab net_cnt_lock 1354 * to bump the net_refcnt. It then releases it and does the action specific 1355 * algorithm to get the net_tree_lock. Once it has that, then it is okay to 1356 * grab the net_cnt_lock and change the status. The status can only be 1357 * changed if the caller has the net_tree_lock held as well. 1358 * 1359 * Note that the initial grab of net_cnt_lock must occur whilst 1360 * mi_lock is being held. This prevents stale data in that if the 1361 * ephemeral tree is non-NULL, then the harvester can not remove 1362 * the tree from the mntinfo node until it grabs that lock. I.e., 1363 * we get the pointer to the tree and hold the lock atomically 1364 * with respect to being in mi_lock. 1365 * 1366 * When a caller is done with net_tree_lock, it can decrement the net_refcnt 1367 * either before it releases net_tree_lock or after. 1368 * 1369 * In either event, to decrement net_refcnt, it must hold net_cnt_lock. 1370 * 1371 * Note that the overall locking scheme for the nodes is to control access 1372 * via the tree. The current scheme could easily be extended such that 1373 * the enclosing root referenced a "forest" of trees. The underlying trees 1374 * would be autonomous with respect to locks. 1375 * 1376 * Note that net_next is controlled by external locks 1377 * particular to the data structure that the tree is being added to. 1378 */ 1379 typedef struct nfs4_ephemeral_tree { 1380 mntinfo4_t *net_mount; 1381 nfs4_ephemeral_t *net_root; 1382 struct nfs4_ephemeral_tree *net_next; 1383 kmutex_t net_tree_lock; 1384 kmutex_t net_cnt_lock; 1385 uint_t net_status; 1386 uint_t net_refcnt; 1387 } nfs4_ephemeral_tree_t; 1388 1389 /* 1390 * State for the tree (set in net_status): 1391 */ 1392 #define NFS4_EPHEMERAL_TREE_OK 0x0 1393 #define NFS4_EPHEMERAL_TREE_BUILDING 0x1 1394 #define NFS4_EPHEMERAL_TREE_DEROOTING 0x2 1395 #define NFS4_EPHEMERAL_TREE_INVALID 0x4 1396 #define NFS4_EPHEMERAL_TREE_MOUNTING 0x8 1397 #define NFS4_EPHEMERAL_TREE_UMOUNTING 0x10 1398 #define NFS4_EPHEMERAL_TREE_LOCKED 0x20 1399 1400 #define NFS4_EPHEMERAL_TREE_PROCESSING (NFS4_EPHEMERAL_TREE_DEROOTING | \ 1401 NFS4_EPHEMERAL_TREE_INVALID | NFS4_EPHEMERAL_TREE_UMOUNTING | \ 1402 NFS4_EPHEMERAL_TREE_LOCKED) 1403 1404 /* 1405 * This macro evaluates to non-zero if the given op releases state at the 1406 * server. 1407 */ 1408 #define OH_IS_STATE_RELE(op) ((op) == OH_CLOSE || (op) == OH_LOCKU || \ 1409 (op) == OH_DELEGRETURN) 1410 1411 #ifdef _KERNEL 1412 1413 extern void nfs4_async_manager(struct vfs *); 1414 extern void nfs4_async_manager_stop(struct vfs *); 1415 extern void nfs4_async_stop(struct vfs *); 1416 extern int nfs4_async_stop_sig(struct vfs *); 1417 extern int nfs4_async_readahead(vnode_t *, u_offset_t, caddr_t, 1418 struct seg *, cred_t *, 1419 void (*)(vnode_t *, u_offset_t, 1420 caddr_t, struct seg *, cred_t *)); 1421 extern int nfs4_async_putapage(vnode_t *, page_t *, u_offset_t, size_t, 1422 int, cred_t *, int (*)(vnode_t *, page_t *, 1423 u_offset_t, size_t, int, cred_t *)); 1424 extern int nfs4_async_pageio(vnode_t *, page_t *, u_offset_t, size_t, 1425 int, cred_t *, int (*)(vnode_t *, page_t *, 1426 u_offset_t, size_t, int, cred_t *)); 1427 extern void nfs4_async_commit(vnode_t *, page_t *, offset3, count3, 1428 cred_t *, void (*)(vnode_t *, page_t *, 1429 offset3, count3, cred_t *)); 1430 extern void nfs4_async_inactive(vnode_t *, cred_t *); 1431 extern void nfs4_inactive_thread(mntinfo4_t *mi); 1432 extern void nfs4_inactive_otw(vnode_t *, cred_t *); 1433 extern int nfs4_putpages(vnode_t *, u_offset_t, size_t, int, cred_t *); 1434 1435 extern int nfs4_setopts(vnode_t *, model_t, struct nfs_args *); 1436 extern void nfs4_mnt_kstat_init(struct vfs *); 1437 1438 extern void rfs4call(struct mntinfo4 *, struct COMPOUND4args_clnt *, 1439 struct COMPOUND4res_clnt *, cred_t *, int *, int, 1440 nfs4_error_t *); 1441 extern void nfs4_acl_fill_cache(struct rnode4 *, vsecattr_t *); 1442 extern int nfs4_attr_otw(vnode_t *, nfs4_tag_type_t, 1443 nfs4_ga_res_t *, bitmap4, cred_t *); 1444 1445 extern void nfs4_attrcache_noinval(vnode_t *, nfs4_ga_res_t *, hrtime_t); 1446 extern void nfs4_attr_cache(vnode_t *, nfs4_ga_res_t *, 1447 hrtime_t, cred_t *, int, 1448 change_info4 *); 1449 extern void nfs4_purge_rddir_cache(vnode_t *); 1450 extern void nfs4_invalidate_pages(vnode_t *, u_offset_t, cred_t *); 1451 extern void nfs4_purge_caches(vnode_t *, int, cred_t *, int); 1452 extern void nfs4_purge_stale_fh(int, vnode_t *, cred_t *); 1453 1454 extern void nfs4rename_update(vnode_t *, vnode_t *, nfs_fh4 *, char *); 1455 extern void nfs4_update_paths(vnode_t *, char *, vnode_t *, char *, 1456 vnode_t *); 1457 1458 extern void nfs4args_lookup_free(nfs_argop4 *, int); 1459 extern void nfs4args_copen_free(OPEN4cargs *); 1460 1461 extern void nfs4_printfhandle(nfs4_fhandle_t *); 1462 1463 extern void nfs_free_mi4(mntinfo4_t *); 1464 extern void sv4_free(servinfo4_t *); 1465 extern void nfs4_mi_zonelist_add(mntinfo4_t *); 1466 extern int nfs4_mi_zonelist_remove(mntinfo4_t *); 1467 extern int nfs4_secinfo_recov(mntinfo4_t *, vnode_t *, vnode_t *); 1468 extern void nfs4_secinfo_init(void); 1469 extern void nfs4_secinfo_fini(void); 1470 extern int nfs4_secinfo_path(mntinfo4_t *, cred_t *, int); 1471 extern int nfs4_secinfo_vnode_otw(vnode_t *, char *, cred_t *); 1472 extern void secinfo_free(sv_secinfo_t *); 1473 extern void save_mnt_secinfo(servinfo4_t *); 1474 extern void check_mnt_secinfo(servinfo4_t *, vnode_t *); 1475 extern int vattr_to_fattr4(vattr_t *, vsecattr_t *, fattr4 *, int, 1476 enum nfs_opnum4, bitmap4 supp_mask); 1477 extern int nfs4_putapage(vnode_t *, page_t *, u_offset_t *, size_t *, 1478 int, cred_t *); 1479 extern void nfs4_write_error(vnode_t *, int, cred_t *); 1480 extern void nfs4_lockcompletion(vnode_t *, int); 1481 extern bool_t nfs4_map_lost_lock_conflict(vnode_t *); 1482 extern int vtodv(vnode_t *, vnode_t **, cred_t *, bool_t); 1483 extern void nfs4open_confirm(vnode_t *, seqid4*, stateid4 *, cred_t *, 1484 bool_t, bool_t *, nfs4_open_owner_t *, bool_t, 1485 nfs4_error_t *, int *); 1486 extern void nfs4_error_zinit(nfs4_error_t *); 1487 extern void nfs4_error_init(nfs4_error_t *, int); 1488 extern void nfs4_free_args(struct nfs_args *); 1489 1490 extern void mi_hold(mntinfo4_t *); 1491 extern void mi_rele(mntinfo4_t *); 1492 1493 extern sec_data_t *copy_sec_data(sec_data_t *); 1494 extern gss_clntdata_t *copy_sec_data_gss(gss_clntdata_t *); 1495 1496 #ifdef DEBUG 1497 extern int nfs4_consistent_type(vnode_t *); 1498 #endif 1499 1500 extern void nfs4_init_dot_entries(void); 1501 extern void nfs4_destroy_dot_entries(void); 1502 extern struct nfs4_callback_globals *nfs4_get_callback_globals(void); 1503 1504 extern struct nfs4_server nfs4_server_lst; 1505 1506 extern clock_t nfs_write_error_interval; 1507 1508 #endif /* _KERNEL */ 1509 1510 /* 1511 * Flags for nfs4getfh_otw. 1512 */ 1513 1514 #define NFS4_GETFH_PUBLIC 0x01 1515 #define NFS4_GETFH_NEEDSOP 0x02 1516 1517 /* 1518 * Found through rnodes. 1519 * 1520 * The os_open_ref_count keeps track the number of open file descriptor 1521 * refernces on this data structure. It will be bumped for any successful 1522 * OTW OPEN call and any OPEN call that determines the OTW call is not 1523 * necessary and the open stream hasn't just been created (see 1524 * nfs4_is_otw_open_necessary). 1525 * 1526 * os_mapcnt is a count of the number of mmapped pages for a particular 1527 * open stream; this in conjunction w/ os_open_ref_count is used to 1528 * determine when to do a close to the server. This is necessary because 1529 * of the semantics of doing open, mmap, close; the OTW close must be wait 1530 * until all open and mmap references have vanished. 1531 * 1532 * 'os_valid' tells us whether this structure is about to be freed or not, 1533 * if it is then don't return it in find_open_stream(). 1534 * 1535 * 'os_final_close' is set when a CLOSE OTW was attempted. This is needed 1536 * so we can properly count the os_open_ref_count in cases where we VOP_CLOSE 1537 * without a VOP_OPEN, and have nfs4_inactive() drive the OTW CLOSE. It 1538 * also helps differentiate the VOP_OPEN/VN_RELE case from the VOP_CLOSE 1539 * that tried to close OTW but failed, and left the state cleanup to 1540 * nfs4_inactive/CLOSE_FORCE. 1541 * 1542 * 'os_force_close' is used to let us know if an intervening thread came 1543 * and reopened the open stream after we decided to issue a CLOSE_FORCE, 1544 * but before we could actually process the CLOSE_FORCE. 1545 * 1546 * 'os_pending_close' is set when an over-the-wire CLOSE is deferred to the 1547 * lost state queue. 1548 * 1549 * 'open_stateid' is set the last open stateid returned by the server unless 1550 * 'os_delegation' is 1, in which case 'open_stateid' refers to the 1551 * delegation stateid returned by the server. This is used in cases where the 1552 * client tries to OPEN a file but already has a suitable delegation, so we 1553 * just stick the delegation stateid in the open stream. 1554 * 1555 * os_dc_openacc are open access bits which have been granted to the 1556 * open stream by virtue of a delegation, but which have not been seen 1557 * by the server. This applies even if the open stream does not have 1558 * os_delegation set. These bits are used when setting file locks to 1559 * determine whether an open with CLAIM_DELEGATE_CUR needs to be done 1560 * before the lock request can be sent to the server. See 1561 * nfs4frlock_check_deleg(). 1562 * 1563 * 'os_mmap_read/write' keep track of the read and write access our memory 1564 * maps require. We need to keep track of this so we can provide the proper 1565 * access bits in the open/mmap/close/reboot/reopen case. 1566 * 1567 * 'os_failed_reopen' tells us that we failed to successfully reopen this 1568 * open stream; therefore, we should not use this open stateid as it is 1569 * not valid anymore. This flag is also used to indicate an unsuccessful 1570 * attempt to reopen a delegation open stream with CLAIM_DELEGATE_CUR. 1571 * 1572 * If 'os_orig_oo_name' is different than os_open_owner's oo_name 1573 * then this tells us that this open stream's open owner used a 1574 * bad seqid (that is, got NFS4ERR_BAD_SEQID). If different, this open 1575 * stream will no longer be used for future OTW state releasing calls. 1576 * 1577 * Lock ordering: 1578 * rnode4_t::r_os_lock > os_sync_lock 1579 * os_sync_lock > rnode4_t::r_statelock 1580 * os_sync_lock > rnode4_t::r_statev4_lock 1581 * os_sync_lock > mntinfo4_t::mi_lock (via hold over rfs4call) 1582 * 1583 * The 'os_sync_lock' protects: 1584 * open_stateid 1585 * os_dc_openacc 1586 * os_delegation 1587 * os_failed_reopen 1588 * os_final_close 1589 * os_force_close 1590 * os_mapcnt 1591 * os_mmap_read 1592 * os_mmap_write 1593 * os_open_ref_count 1594 * os_pending_close 1595 * os_share_acc_read 1596 * os_share_acc_write 1597 * os_share_deny_none 1598 * os_share_deny_read 1599 * os_share_deny_write 1600 * os_ref_count 1601 * os_valid 1602 * 1603 * The rnode4_t::r_os_lock protects: 1604 * os_node 1605 * 1606 * These fields are set at creation time and 1607 * read only after that: 1608 * os_open_owner 1609 * os_orig_oo_name 1610 */ 1611 typedef struct nfs4_open_stream { 1612 uint64_t os_share_acc_read; 1613 uint64_t os_share_acc_write; 1614 uint64_t os_mmap_read; 1615 uint64_t os_mmap_write; 1616 uint32_t os_share_deny_none; 1617 uint32_t os_share_deny_read; 1618 uint32_t os_share_deny_write; 1619 stateid4 open_stateid; 1620 int os_dc_openacc; 1621 int os_ref_count; 1622 unsigned os_valid:1; 1623 unsigned os_delegation:1; 1624 unsigned os_final_close:1; 1625 unsigned os_pending_close:1; 1626 unsigned os_failed_reopen:1; 1627 unsigned os_force_close:1; 1628 int os_open_ref_count; 1629 long os_mapcnt; 1630 list_node_t os_node; 1631 struct nfs4_open_owner *os_open_owner; 1632 uint64_t os_orig_oo_name; 1633 kmutex_t os_sync_lock; 1634 } nfs4_open_stream_t; 1635 1636 /* 1637 * This structure describes the format of the lock_owner_name 1638 * field of the lock owner. 1639 */ 1640 1641 typedef struct nfs4_lo_name { 1642 uint64_t ln_seq_num; 1643 pid_t ln_pid; 1644 } nfs4_lo_name_t; 1645 1646 /* 1647 * Flags for lo_flags. 1648 */ 1649 #define NFS4_LOCK_SEQID_INUSE 0x1 1650 #define NFS4_BAD_SEQID_LOCK 0x2 1651 1652 /* 1653 * The lo_prev_rnode and lo_next_rnode are for a circular list that hangs 1654 * off the rnode. If the links are NULL it means this object is not on the 1655 * list. 1656 * 1657 * 'lo_pending_rqsts' is non-zero if we ever tried to send a request and 1658 * didn't get a response back. This is used to figure out if we have 1659 * possible remote v4 locks, so that we can clean up at process exit. In 1660 * theory, the client should be able to figure out if the server received 1661 * the request (based on what seqid works), so maybe we can get rid of this 1662 * flag someday. 1663 * 1664 * 'lo_ref_count' tells us how many processes/threads are using this data 1665 * structure. The rnode's list accounts for one reference. 1666 * 1667 * 'lo_just_created' is set to NFS4_JUST_CREATED when we first create the 1668 * data structure. It is then set to NFS4_PERM_CREATED when a lock request 1669 * is successful using this lock owner structure. We need to keep 'temporary' 1670 * lock owners around so we can properly keep the lock seqid synchronization 1671 * when multiple processes/threads are trying to create the lock owner for the 1672 * first time (especially with the DENIED error case). Once 1673 * 'lo_just_created' is set to NFS4_PERM_CREATED, it doesn't change. 1674 * 1675 * 'lo_valid' tells us whether this structure is about to be freed or not, 1676 * if it is then don't return it from find_lock_owner(). 1677 * 1678 * Retrieving and setting of 'lock_seqid' is protected by the 1679 * NFS4_LOCK_SEQID_INUSE flag. Waiters for NFS4_LOCK_SEQID_INUSE should 1680 * use 'lo_cv_seqid_sync'. 1681 * 1682 * The setting of 'lock_stateid' is protected by the 1683 * NFS4_LOCK_SEQID_INUSE flag and 'lo_lock'. The retrieving of the 1684 * 'lock_stateid' is protected by 'lo_lock', with the additional 1685 * requirement that the calling function can handle NFS4ERR_OLD_STATEID and 1686 * NFS4ERR_BAD_STATEID as appropiate. 1687 * 1688 * The setting of NFS4_BAD_SEQID_LOCK to lo_flags tells us whether this lock 1689 * owner used a bad seqid (that is, got NFS4ERR_BAD_SEQID). With this set, 1690 * this lock owner will no longer be used for future OTW calls. Once set, 1691 * it is never unset. 1692 * 1693 * Lock ordering: 1694 * rnode4_t::r_statev4_lock > lo_lock 1695 */ 1696 typedef struct nfs4_lock_owner { 1697 struct nfs4_lock_owner *lo_next_rnode; 1698 struct nfs4_lock_owner *lo_prev_rnode; 1699 int lo_pid; 1700 stateid4 lock_stateid; 1701 seqid4 lock_seqid; 1702 /* 1703 * Fix this to always be 12 bytes 1704 */ 1705 nfs4_lo_name_t lock_owner_name; 1706 int lo_ref_count; 1707 int lo_valid; 1708 int lo_pending_rqsts; 1709 int lo_just_created; 1710 int lo_flags; 1711 kcondvar_t lo_cv_seqid_sync; 1712 kmutex_t lo_lock; 1713 kthread_t *lo_seqid_holder; /* debugging aid */ 1714 } nfs4_lock_owner_t; 1715 1716 /* for nfs4_lock_owner_t lookups */ 1717 typedef enum {LOWN_ANY, LOWN_VALID_STATEID} lown_which_t; 1718 1719 /* Number of times to retry a call that fails with state independent error */ 1720 #define NFS4_NUM_RECOV_RETRIES 3 1721 1722 typedef enum { 1723 NO_SID, 1724 DEL_SID, 1725 LOCK_SID, 1726 OPEN_SID, 1727 SPEC_SID 1728 } nfs4_stateid_type_t; 1729 1730 typedef struct nfs4_stateid_types { 1731 stateid4 d_sid; 1732 stateid4 l_sid; 1733 stateid4 o_sid; 1734 nfs4_stateid_type_t cur_sid_type; 1735 } nfs4_stateid_types_t; 1736 1737 /* 1738 * Per-zone data for dealing with callbacks. Included here solely for the 1739 * benefit of MDB. 1740 */ 1741 struct nfs4_callback_stats { 1742 kstat_named_t delegations; 1743 kstat_named_t cb_getattr; 1744 kstat_named_t cb_recall; 1745 kstat_named_t cb_null; 1746 kstat_named_t cb_dispatch; 1747 kstat_named_t delegaccept_r; 1748 kstat_named_t delegaccept_rw; 1749 kstat_named_t delegreturn; 1750 kstat_named_t callbacks; 1751 kstat_named_t claim_cur; 1752 kstat_named_t claim_cur_ok; 1753 kstat_named_t recall_trunc; 1754 kstat_named_t recall_failed; 1755 kstat_named_t return_limit_write; 1756 kstat_named_t return_limit_addmap; 1757 kstat_named_t deleg_recover; 1758 kstat_named_t cb_illegal; 1759 }; 1760 1761 struct nfs4_callback_globals { 1762 kmutex_t nfs4_cb_lock; 1763 kmutex_t nfs4_dlist_lock; 1764 int nfs4_program_hint; 1765 /* this table maps the program number to the nfs4_server structure */ 1766 struct nfs4_server **nfs4prog2server; 1767 list_t nfs4_dlist; 1768 list_t nfs4_cb_ports; 1769 struct nfs4_callback_stats nfs4_callback_stats; 1770 #ifdef DEBUG 1771 int nfs4_dlistadd_c; 1772 int nfs4_dlistclean_c; 1773 #endif 1774 }; 1775 1776 typedef enum { 1777 CLOSE_NORM, 1778 CLOSE_DELMAP, 1779 CLOSE_FORCE, 1780 CLOSE_RESEND, 1781 CLOSE_AFTER_RESEND 1782 } nfs4_close_type_t; 1783 1784 /* 1785 * Structure to hold the bad seqid information that is passed 1786 * to the recovery framework. 1787 */ 1788 typedef struct nfs4_bseqid_entry { 1789 nfs4_open_owner_t *bs_oop; 1790 nfs4_lock_owner_t *bs_lop; 1791 vnode_t *bs_vp; 1792 pid_t bs_pid; 1793 nfs4_tag_type_t bs_tag; 1794 seqid4 bs_seqid; 1795 list_node_t bs_node; 1796 } nfs4_bseqid_entry_t; 1797 1798 #ifdef _KERNEL 1799 1800 extern void nfs4close_one(vnode_t *, nfs4_open_stream_t *, cred_t *, int, 1801 nfs4_lost_rqst_t *, nfs4_error_t *, nfs4_close_type_t, 1802 size_t, uint_t, uint_t); 1803 extern void nfs4close_notw(vnode_t *, nfs4_open_stream_t *, int *); 1804 extern void nfs4_set_lock_stateid(nfs4_lock_owner_t *, stateid4); 1805 extern void open_owner_hold(nfs4_open_owner_t *); 1806 extern void open_owner_rele(nfs4_open_owner_t *); 1807 extern nfs4_open_stream_t *find_or_create_open_stream(nfs4_open_owner_t *, 1808 struct rnode4 *, int *); 1809 extern nfs4_open_stream_t *find_open_stream(nfs4_open_owner_t *, 1810 struct rnode4 *); 1811 extern nfs4_open_stream_t *create_open_stream(nfs4_open_owner_t *oop, 1812 struct rnode4 *rp); 1813 extern void open_stream_hold(nfs4_open_stream_t *); 1814 extern void open_stream_rele(nfs4_open_stream_t *, struct rnode4 *); 1815 extern int nfs4close_all(vnode_t *, cred_t *); 1816 extern void lock_owner_hold(nfs4_lock_owner_t *); 1817 extern void lock_owner_rele(nfs4_lock_owner_t *); 1818 extern nfs4_lock_owner_t *create_lock_owner(struct rnode4 *, pid_t); 1819 extern nfs4_lock_owner_t *find_lock_owner(struct rnode4 *, pid_t, lown_which_t); 1820 extern void nfs4_rnode_remove_lock_owner(struct rnode4 *, 1821 nfs4_lock_owner_t *); 1822 extern void nfs4_flush_lock_owners(struct rnode4 *); 1823 extern void nfs4_setlockowner_args(lock_owner4 *, struct rnode4 *, pid_t); 1824 extern void nfs4_set_open_seqid(seqid4, nfs4_open_owner_t *, 1825 nfs4_tag_type_t); 1826 extern void nfs4_set_lock_seqid(seqid4, nfs4_lock_owner_t *); 1827 extern void nfs4_get_and_set_next_open_seqid(nfs4_open_owner_t *, 1828 nfs4_tag_type_t); 1829 extern void nfs4_end_open_seqid_sync(nfs4_open_owner_t *); 1830 extern int nfs4_start_open_seqid_sync(nfs4_open_owner_t *, mntinfo4_t *); 1831 extern void nfs4_end_lock_seqid_sync(nfs4_lock_owner_t *); 1832 extern int nfs4_start_lock_seqid_sync(nfs4_lock_owner_t *, mntinfo4_t *); 1833 extern void nfs4_setup_lock_args(nfs4_lock_owner_t *, nfs4_open_owner_t *, 1834 nfs4_open_stream_t *, clientid4, locker4 *); 1835 extern void nfs4_destroy_open_owner(nfs4_open_owner_t *); 1836 1837 extern void nfs4_renew_lease_thread(nfs4_server_t *); 1838 extern nfs4_server_t *find_nfs4_server(mntinfo4_t *); 1839 extern nfs4_server_t *find_nfs4_server_all(mntinfo4_t *, int all); 1840 extern nfs4_server_t *new_nfs4_server(servinfo4_t *, cred_t *); 1841 extern void nfs4_mark_srv_dead(nfs4_server_t *); 1842 extern nfs4_server_t *servinfo4_to_nfs4_server(servinfo4_t *); 1843 extern void nfs4_inc_state_ref_count(mntinfo4_t *); 1844 extern void nfs4_inc_state_ref_count_nolock(nfs4_server_t *, 1845 mntinfo4_t *); 1846 extern void nfs4_dec_state_ref_count(mntinfo4_t *); 1847 extern void nfs4_dec_state_ref_count_nolock(nfs4_server_t *, 1848 mntinfo4_t *); 1849 extern clientid4 mi2clientid(mntinfo4_t *); 1850 extern int nfs4_server_in_recovery(nfs4_server_t *); 1851 extern bool_t nfs4_server_vlock(nfs4_server_t *, int); 1852 extern nfs4_open_owner_t *create_open_owner(cred_t *, mntinfo4_t *); 1853 extern uint64_t nfs4_get_new_oo_name(void); 1854 extern nfs4_open_owner_t *find_open_owner(cred_t *, int, mntinfo4_t *); 1855 extern nfs4_open_owner_t *find_open_owner_nolock(cred_t *, int, mntinfo4_t *); 1856 extern void nfs4frlock(nfs4_lock_call_type_t, vnode_t *, int, flock64_t *, 1857 int, u_offset_t, cred_t *, nfs4_error_t *, 1858 nfs4_lost_rqst_t *, int *); 1859 extern void nfs4open_dg_save_lost_rqst(int, nfs4_lost_rqst_t *, 1860 nfs4_open_owner_t *, nfs4_open_stream_t *, cred_t *, 1861 vnode_t *, int, int); 1862 extern void nfs4_open_downgrade(int, int, nfs4_open_owner_t *, 1863 nfs4_open_stream_t *, vnode_t *, cred_t *, 1864 nfs4_lost_rqst_t *, nfs4_error_t *, cred_t **, seqid4 *); 1865 extern seqid4 nfs4_get_open_seqid(nfs4_open_owner_t *); 1866 extern cred_t *nfs4_get_otw_cred(cred_t *, mntinfo4_t *, nfs4_open_owner_t *); 1867 extern void nfs4_init_stateid_types(nfs4_stateid_types_t *); 1868 extern void nfs4_save_stateid(stateid4 *, nfs4_stateid_types_t *); 1869 1870 extern kmutex_t nfs4_server_lst_lock; 1871 1872 extern void nfs4callback_destroy(nfs4_server_t *); 1873 extern void nfs4_callback_init(void); 1874 extern void nfs4_callback_fini(void); 1875 extern void nfs4_cb_args(nfs4_server_t *, struct knetconfig *, 1876 SETCLIENTID4args *); 1877 extern void nfs4delegreturn_async(struct rnode4 *, int, bool_t); 1878 1879 extern enum nfs4_delegreturn_policy nfs4_delegreturn_policy; 1880 1881 extern void nfs4_add_mi_to_server(nfs4_server_t *, mntinfo4_t *); 1882 extern void nfs4_remove_mi_from_server(mntinfo4_t *, nfs4_server_t *); 1883 extern nfs4_server_t *nfs4_move_mi(mntinfo4_t *, servinfo4_t *, servinfo4_t *); 1884 extern bool_t nfs4_fs_active(nfs4_server_t *); 1885 extern void nfs4_server_rele(nfs4_server_t *); 1886 extern bool_t inlease(nfs4_server_t *); 1887 extern bool_t nfs4_has_pages(vnode_t *); 1888 extern void nfs4_log_badowner(mntinfo4_t *, nfs_opnum4); 1889 1890 #endif /* _KERNEL */ 1891 1892 /* 1893 * Client State Recovery 1894 */ 1895 1896 /* 1897 * The following defines are used for rs_flags in 1898 * a nfs4_recov_state_t structure. 1899 * 1900 * NFS4_RS_RENAME_HELD Indicates that the mi_rename_lock was held. 1901 * NFS4_RS_GRACE_MSG Set once we have uprintf'ed a grace message. 1902 * NFS4_RS_DELAY_MSG Set once we have uprintf'ed a delay message. 1903 * NFS4_RS_RECALL_HELD1 r_deleg_recall_lock for vp1 was held. 1904 * NFS4_RS_RECALL_HELD2 r_deleg_recall_lock for vp2 was held. 1905 */ 1906 #define NFS4_RS_RENAME_HELD 0x000000001 1907 #define NFS4_RS_GRACE_MSG 0x000000002 1908 #define NFS4_RS_DELAY_MSG 0x000000004 1909 #define NFS4_RS_RECALL_HELD1 0x000000008 1910 #define NFS4_RS_RECALL_HELD2 0x000000010 1911 1912 /* 1913 * Information that is retrieved from nfs4_start_op() and that is 1914 * passed into nfs4_end_op(). 1915 * 1916 * rs_sp is a reference to the nfs4_server that was found, or NULL. 1917 * 1918 * rs_num_retry_despite_err is the number times client retried an 1919 * OTW op despite a recovery error. It is only incremented for hints 1920 * exempt to normal R4RECOVERR processing 1921 * (OH_CLOSE/OH_LOCKU/OH_DELEGRETURN). (XXX this special-case code 1922 * needs review for possible removal.) 1923 * It is initialized wherever nfs4_recov_state_t is declared -- usually 1924 * very near initialization of rs_flags. 1925 */ 1926 typedef struct { 1927 nfs4_server_t *rs_sp; 1928 int rs_flags; 1929 int rs_num_retry_despite_err; 1930 } nfs4_recov_state_t; 1931 1932 /* 1933 * Flags for nfs4_check_remap, nfs4_remap_file and nfs4_remap_root. 1934 */ 1935 1936 #define NFS4_REMAP_CKATTRS 1 1937 #define NFS4_REMAP_NEEDSOP 2 1938 1939 #ifdef _KERNEL 1940 1941 extern int nfs4_is_otw_open_necessary(nfs4_open_owner_t *, int, 1942 vnode_t *, int, int *, int, nfs4_recov_state_t *); 1943 extern void nfs4setclientid(struct mntinfo4 *, struct cred *, bool_t, 1944 nfs4_error_t *); 1945 extern void nfs4_reopen(vnode_t *, nfs4_open_stream_t *, nfs4_error_t *, 1946 open_claim_type4, bool_t, bool_t); 1947 extern void nfs4_remap_root(struct mntinfo4 *, nfs4_error_t *, int); 1948 extern void nfs4_check_remap(mntinfo4_t *mi, vnode_t *vp, int, 1949 nfs4_error_t *); 1950 extern void nfs4_remap_file(mntinfo4_t *mi, vnode_t *vp, int, 1951 nfs4_error_t *); 1952 extern int nfs4_make_dotdot(struct nfs4_sharedfh *, hrtime_t, 1953 vnode_t *, cred_t *, vnode_t **, int); 1954 extern void nfs4_fail_recov(vnode_t *, char *, int, nfsstat4); 1955 1956 extern int nfs4_needs_recovery(nfs4_error_t *, bool_t, vfs_t *); 1957 extern int nfs4_recov_marks_dead(nfsstat4); 1958 extern bool_t nfs4_start_recovery(nfs4_error_t *, struct mntinfo4 *, 1959 vnode_t *, vnode_t *, stateid4 *, 1960 nfs4_lost_rqst_t *, nfs_opnum4, nfs4_bseqid_entry_t *); 1961 extern int nfs4_start_op(struct mntinfo4 *, vnode_t *, vnode_t *, 1962 nfs4_recov_state_t *); 1963 extern void nfs4_end_op(struct mntinfo4 *, vnode_t *, vnode_t *, 1964 nfs4_recov_state_t *, bool_t); 1965 extern int nfs4_start_fop(struct mntinfo4 *, vnode_t *, vnode_t *, 1966 nfs4_op_hint_t, nfs4_recov_state_t *, bool_t *); 1967 extern void nfs4_end_fop(struct mntinfo4 *, vnode_t *, vnode_t *, 1968 nfs4_op_hint_t, nfs4_recov_state_t *, bool_t); 1969 extern char *nfs4_recov_action_to_str(nfs4_recov_t); 1970 1971 /* 1972 * In sequence, code desiring to unmount an ephemeral tree must 1973 * call nfs4_ephemeral_umount, nfs4_ephemeral_umount_activate, 1974 * and nfs4_ephemeral_umount_unlock. The _unlock must also be 1975 * called on all error paths that occur before it would naturally 1976 * be invoked. 1977 * 1978 * The caller must also provde a pointer to a boolean to keep track 1979 * of whether or not the code in _unlock is to be ran. 1980 */ 1981 extern void nfs4_ephemeral_umount_activate(mntinfo4_t *, 1982 bool_t *, bool_t *, nfs4_ephemeral_tree_t **); 1983 extern int nfs4_ephemeral_umount(mntinfo4_t *, int, cred_t *, 1984 bool_t *, bool_t *, nfs4_ephemeral_tree_t **); 1985 extern void nfs4_ephemeral_umount_unlock(bool_t *, bool_t *, 1986 nfs4_ephemeral_tree_t **); 1987 1988 extern int nfs4_record_ephemeral_mount(mntinfo4_t *mi, vnode_t *mvp); 1989 1990 extern int wait_for_recall(vnode_t *, vnode_t *, nfs4_op_hint_t, 1991 nfs4_recov_state_t *); 1992 extern void nfs4_end_op_recall(vnode_t *, vnode_t *, nfs4_recov_state_t *); 1993 extern void nfs4_send_siglost(pid_t, mntinfo4_t *mi, vnode_t *vp, bool_t, 1994 int, nfsstat4); 1995 extern time_t nfs4err_delay_time; 1996 extern void nfs4_set_grace_wait(mntinfo4_t *); 1997 extern void nfs4_set_delay_wait(vnode_t *); 1998 extern int nfs4_wait_for_grace(mntinfo4_t *, nfs4_recov_state_t *); 1999 extern int nfs4_wait_for_delay(vnode_t *, nfs4_recov_state_t *); 2000 extern nfs4_bseqid_entry_t *nfs4_create_bseqid_entry(nfs4_open_owner_t *, 2001 nfs4_lock_owner_t *, vnode_t *, pid_t, nfs4_tag_type_t, 2002 seqid4); 2003 2004 extern void nfs4_resend_open_otw(vnode_t **, nfs4_lost_rqst_t *, 2005 nfs4_error_t *); 2006 extern void nfs4_resend_delegreturn(nfs4_lost_rqst_t *, nfs4_error_t *, 2007 nfs4_server_t *); 2008 extern int nfs4_rpc_retry_error(int); 2009 extern int nfs4_try_failover(nfs4_error_t *); 2010 extern void nfs4_free_msg(nfs4_debug_msg_t *); 2011 extern void nfs4_mnt_recov_kstat_init(vfs_t *); 2012 extern void nfs4_mi_kstat_inc_delay(mntinfo4_t *); 2013 extern void nfs4_mi_kstat_inc_no_grace(mntinfo4_t *); 2014 extern char *nfs4_stat_to_str(nfsstat4); 2015 extern char *nfs4_op_to_str(nfs_opnum4); 2016 2017 extern void nfs4_queue_event(nfs4_event_type_t, mntinfo4_t *, char *, 2018 uint_t, vnode_t *, vnode_t *, nfsstat4, char *, pid_t, 2019 nfs4_tag_type_t, nfs4_tag_type_t, seqid4, seqid4); 2020 extern void nfs4_queue_fact(nfs4_fact_type_t, mntinfo4_t *, nfsstat4, 2021 nfs4_recov_t, nfs_opnum4, bool_t, char *, int, vnode_t *); 2022 #pragma rarely_called(nfs4_queue_event) 2023 #pragma rarely_called(nfs4_queue_fact) 2024 2025 /* Used for preformed "." and ".." dirents */ 2026 extern char *nfs4_dot_entries; 2027 extern char *nfs4_dot_dot_entry; 2028 2029 #ifdef DEBUG 2030 extern uint_t nfs4_tsd_key; 2031 #endif 2032 2033 #endif /* _KERNEL */ 2034 2035 /* 2036 * Filehandle management. 2037 * 2038 * Filehandles can change in v4, so rather than storing the filehandle 2039 * directly in the rnode, etc., we manage the filehandle through one of 2040 * these objects. 2041 * Locking: sfh_fh and sfh_tree is protected by the filesystem's 2042 * mi_fh_lock. The reference count and flags are protected by sfh_lock. 2043 * sfh_mi is read-only. 2044 * 2045 * mntinfo4_t::mi_fh_lock > sfh_lock. 2046 */ 2047 2048 typedef struct nfs4_sharedfh { 2049 nfs_fh4 sfh_fh; /* key and current filehandle */ 2050 kmutex_t sfh_lock; 2051 uint_t sfh_refcnt; /* reference count */ 2052 uint_t sfh_flags; 2053 mntinfo4_t *sfh_mi; /* backptr to filesystem */ 2054 avl_node_t sfh_tree; /* used by avl package */ 2055 } nfs4_sharedfh_t; 2056 2057 #define SFH4_SAME(sfh1, sfh2) ((sfh1) == (sfh2)) 2058 2059 /* 2060 * Flags. 2061 */ 2062 #define SFH4_IN_TREE 0x1 /* currently in an AVL tree */ 2063 2064 #ifdef _KERNEL 2065 2066 extern void sfh4_createtab(avl_tree_t *); 2067 extern nfs4_sharedfh_t *sfh4_get(const nfs_fh4 *, mntinfo4_t *); 2068 extern nfs4_sharedfh_t *sfh4_put(const nfs_fh4 *, mntinfo4_t *, 2069 nfs4_sharedfh_t *); 2070 extern void sfh4_update(nfs4_sharedfh_t *, const nfs_fh4 *); 2071 extern void sfh4_copyval(const nfs4_sharedfh_t *, nfs4_fhandle_t *); 2072 extern void sfh4_hold(nfs4_sharedfh_t *); 2073 extern void sfh4_rele(nfs4_sharedfh_t **); 2074 extern void sfh4_printfhandle(const nfs4_sharedfh_t *); 2075 2076 #endif 2077 2078 /* 2079 * Path and file name management. 2080 * 2081 * This type stores the name of an entry in the filesystem and keeps enough 2082 * information that it can provide a complete path. All fields are 2083 * protected by fn_lock, except for the reference count, which is managed 2084 * using atomic add/subtract. 2085 * 2086 * Additionally shared filehandle for this fname is stored. 2087 * Normally, fn_get() when it creates this fname stores the passed in 2088 * shared fh in fn_sfh by doing sfh_hold. Similarly the path which 2089 * destroys this fname releases the reference on this fh by doing sfh_rele. 2090 * 2091 * fn_get uses the fn_sfh to refine the comparision in cases 2092 * where we have matched the name but have differing file handles, 2093 * this normally happens due to 2094 * 2095 * 1. Server side rename of a file/directory. 2096 * 2. Another client renaming a file/directory on the server. 2097 * 2098 * Differing names but same filehandle is possible as in the case of hardlinks, 2099 * but differing filehandles with same name component will later confuse 2100 * the client and can cause various panics. 2101 * 2102 * Lock order: child and then parent. 2103 */ 2104 2105 typedef struct nfs4_fname { 2106 struct nfs4_fname *fn_parent; /* parent name; null if fs root */ 2107 char *fn_name; /* the actual name */ 2108 ssize_t fn_len; /* strlen(fn_name) */ 2109 uint32_t fn_refcnt; /* reference count */ 2110 kmutex_t fn_lock; 2111 avl_node_t fn_tree; 2112 avl_tree_t fn_children; /* children, if any */ 2113 nfs4_sharedfh_t *fn_sfh; /* The fh for this fname */ 2114 } nfs4_fname_t; 2115 2116 #ifdef _KERNEL 2117 2118 extern vnode_t nfs4_xattr_notsupp_vnode; 2119 #define NFS4_XATTR_DIR_NOTSUPP &nfs4_xattr_notsupp_vnode 2120 2121 extern nfs4_fname_t *fn_get(nfs4_fname_t *, char *, nfs4_sharedfh_t *); 2122 extern void fn_hold(nfs4_fname_t *); 2123 extern void fn_rele(nfs4_fname_t **); 2124 extern char *fn_name(nfs4_fname_t *); 2125 extern char *fn_path(nfs4_fname_t *); 2126 extern void fn_move(nfs4_fname_t *, nfs4_fname_t *, char *); 2127 extern nfs4_fname_t *fn_parent(nfs4_fname_t *); 2128 2129 #endif 2130 2131 /* 2132 * Per-zone data for managing client handles, included in this file for the 2133 * benefit of MDB. 2134 */ 2135 struct nfs4_clnt { 2136 struct chhead *nfscl_chtable4; 2137 kmutex_t nfscl_chtable4_lock; 2138 zoneid_t nfscl_zoneid; 2139 list_node_t nfscl_node; 2140 struct clstat4 nfscl_stat; 2141 }; 2142 2143 #ifdef __cplusplus 2144 } 2145 #endif 2146 2147 #endif /* _NFS4_CLNT_H */ 2148