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 #include <sys/systm.h> 27 #include <sys/kmem.h> 28 #include <sys/cmn_err.h> 29 #include <sys/atomic.h> 30 #include <sys/clconf.h> 31 #include <sys/cladm.h> 32 #include <sys/flock.h> 33 #include <nfs/export.h> 34 #include <nfs/nfs.h> 35 #include <nfs/nfs4.h> 36 #include <nfs/nfssys.h> 37 #include <nfs/lm.h> 38 #include <sys/pathname.h> 39 #include <sys/sdt.h> 40 #include <sys/nvpair.h> 41 42 extern u_longlong_t nfs4_srv_caller_id; 43 44 extern time_t rfs4_start_time; 45 extern uint_t nfs4_srv_vkey; 46 47 stateid4 special0 = { 48 0, 49 { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 } 50 }; 51 52 stateid4 special1 = { 53 0xffffffff, 54 { 55 (char)0xff, (char)0xff, (char)0xff, (char)0xff, 56 (char)0xff, (char)0xff, (char)0xff, (char)0xff, 57 (char)0xff, (char)0xff, (char)0xff, (char)0xff 58 } 59 }; 60 61 62 #define ISSPECIAL(id) (stateid4_cmp(id, &special0) || \ 63 stateid4_cmp(id, &special1)) 64 65 /* For embedding the cluster nodeid into our clientid */ 66 #define CLUSTER_NODEID_SHIFT 24 67 #define CLUSTER_MAX_NODEID 255 68 69 #ifdef DEBUG 70 int rfs4_debug; 71 #endif 72 73 static uint32_t rfs4_database_debug = 0x00; 74 75 static void rfs4_ss_clid_write(rfs4_client_t *cp, char *leaf); 76 static void rfs4_ss_clid_write_one(rfs4_client_t *cp, char *dir, char *leaf); 77 static void rfs4_dss_clear_oldstate(rfs4_servinst_t *sip); 78 static void rfs4_ss_chkclid_sip(rfs4_client_t *cp, rfs4_servinst_t *sip); 79 80 /* 81 * Couple of simple init/destroy functions for a general waiter 82 */ 83 void 84 rfs4_sw_init(rfs4_state_wait_t *swp) 85 { 86 mutex_init(swp->sw_cv_lock, NULL, MUTEX_DEFAULT, NULL); 87 cv_init(swp->sw_cv, NULL, CV_DEFAULT, NULL); 88 swp->sw_active = FALSE; 89 swp->sw_wait_count = 0; 90 } 91 92 void 93 rfs4_sw_destroy(rfs4_state_wait_t *swp) 94 { 95 mutex_destroy(swp->sw_cv_lock); 96 cv_destroy(swp->sw_cv); 97 } 98 99 void 100 rfs4_sw_enter(rfs4_state_wait_t *swp) 101 { 102 mutex_enter(swp->sw_cv_lock); 103 while (swp->sw_active) { 104 swp->sw_wait_count++; 105 cv_wait(swp->sw_cv, swp->sw_cv_lock); 106 swp->sw_wait_count--; 107 } 108 ASSERT(swp->sw_active == FALSE); 109 swp->sw_active = TRUE; 110 mutex_exit(swp->sw_cv_lock); 111 } 112 113 void 114 rfs4_sw_exit(rfs4_state_wait_t *swp) 115 { 116 mutex_enter(swp->sw_cv_lock); 117 ASSERT(swp->sw_active == TRUE); 118 swp->sw_active = FALSE; 119 if (swp->sw_wait_count != 0) 120 cv_broadcast(swp->sw_cv); 121 mutex_exit(swp->sw_cv_lock); 122 } 123 124 /* 125 * CPR callback id -- not related to v4 callbacks 126 */ 127 static callb_id_t cpr_id = 0; 128 129 static void 130 deep_lock_copy(LOCK4res *dres, LOCK4res *sres) 131 { 132 lock_owner4 *slo = &sres->LOCK4res_u.denied.owner; 133 lock_owner4 *dlo = &dres->LOCK4res_u.denied.owner; 134 135 if (sres->status == NFS4ERR_DENIED) { 136 dlo->owner_val = kmem_alloc(slo->owner_len, KM_SLEEP); 137 bcopy(slo->owner_val, dlo->owner_val, slo->owner_len); 138 } 139 } 140 141 static void 142 deep_lock_free(LOCK4res *res) 143 { 144 lock_owner4 *lo = &res->LOCK4res_u.denied.owner; 145 146 if (res->status == NFS4ERR_DENIED) 147 kmem_free(lo->owner_val, lo->owner_len); 148 } 149 150 static void 151 deep_open_copy(OPEN4res *dres, OPEN4res *sres) 152 { 153 nfsace4 *sacep, *dacep; 154 155 if (sres->status != NFS4_OK) { 156 return; 157 } 158 159 dres->attrset = sres->attrset; 160 161 switch (sres->delegation.delegation_type) { 162 case OPEN_DELEGATE_NONE: 163 return; 164 case OPEN_DELEGATE_READ: 165 sacep = &sres->delegation.open_delegation4_u.read.permissions; 166 dacep = &dres->delegation.open_delegation4_u.read.permissions; 167 break; 168 case OPEN_DELEGATE_WRITE: 169 sacep = &sres->delegation.open_delegation4_u.write.permissions; 170 dacep = &dres->delegation.open_delegation4_u.write.permissions; 171 break; 172 } 173 dacep->who.utf8string_val = 174 kmem_alloc(sacep->who.utf8string_len, KM_SLEEP); 175 bcopy(sacep->who.utf8string_val, dacep->who.utf8string_val, 176 sacep->who.utf8string_len); 177 } 178 179 static void 180 deep_open_free(OPEN4res *res) 181 { 182 nfsace4 *acep; 183 if (res->status != NFS4_OK) 184 return; 185 186 switch (res->delegation.delegation_type) { 187 case OPEN_DELEGATE_NONE: 188 return; 189 case OPEN_DELEGATE_READ: 190 acep = &res->delegation.open_delegation4_u.read.permissions; 191 break; 192 case OPEN_DELEGATE_WRITE: 193 acep = &res->delegation.open_delegation4_u.write.permissions; 194 break; 195 } 196 197 if (acep->who.utf8string_val) { 198 kmem_free(acep->who.utf8string_val, acep->who.utf8string_len); 199 acep->who.utf8string_val = NULL; 200 } 201 } 202 203 void 204 rfs4_free_reply(nfs_resop4 *rp) 205 { 206 switch (rp->resop) { 207 case OP_LOCK: 208 deep_lock_free(&rp->nfs_resop4_u.oplock); 209 break; 210 case OP_OPEN: 211 deep_open_free(&rp->nfs_resop4_u.opopen); 212 default: 213 break; 214 } 215 } 216 217 void 218 rfs4_copy_reply(nfs_resop4 *dst, nfs_resop4 *src) 219 { 220 *dst = *src; 221 222 /* Handle responses that need deep copy */ 223 switch (src->resop) { 224 case OP_LOCK: 225 deep_lock_copy(&dst->nfs_resop4_u.oplock, 226 &src->nfs_resop4_u.oplock); 227 break; 228 case OP_OPEN: 229 deep_open_copy(&dst->nfs_resop4_u.opopen, 230 &src->nfs_resop4_u.opopen); 231 break; 232 default: 233 break; 234 }; 235 } 236 237 /* 238 * This is the implementation of the underlying state engine. The 239 * public interface to this engine is described by 240 * nfs4_state.h. Callers to the engine should hold no state engine 241 * locks when they call in to it. If the protocol needs to lock data 242 * structures it should do so after acquiring all references to them 243 * first and then follow the following lock order: 244 * 245 * client > openowner > state > lo_state > lockowner > file. 246 * 247 * Internally we only allow a thread to hold one hash bucket lock at a 248 * time and the lock is higher in the lock order (must be acquired 249 * first) than the data structure that is on that hash list. 250 * 251 * If a new reference was acquired by the caller, that reference needs 252 * to be released after releasing all acquired locks with the 253 * corresponding rfs4_*_rele routine. 254 */ 255 256 /* 257 * This code is some what prototypical for now. Its purpose currently is to 258 * implement the interfaces sufficiently to finish the higher protocol 259 * elements. This will be replaced by a dynamically resizeable tables 260 * backed by kmem_cache allocator. However synchronization is handled 261 * correctly (I hope) and will not change by much. The mutexes for 262 * the hash buckets that can be used to create new instances of data 263 * structures might be good candidates to evolve into reader writer 264 * locks. If it has to do a creation, it would be holding the 265 * mutex across a kmem_alloc with KM_SLEEP specified. 266 */ 267 268 #ifdef DEBUG 269 #define TABSIZE 17 270 #else 271 #define TABSIZE 2047 272 #endif 273 274 #define ADDRHASH(key) ((unsigned long)(key) >> 3) 275 276 /* Used to serialize create/destroy of rfs4_server_state database */ 277 kmutex_t rfs4_state_lock; 278 static rfs4_database_t *rfs4_server_state = NULL; 279 280 /* Used to serialize lookups of clientids */ 281 static krwlock_t rfs4_findclient_lock; 282 283 /* 284 * For now this "table" is exposed so that the CPR callback 285 * function can tromp through it.. 286 */ 287 rfs4_table_t *rfs4_client_tab; 288 289 static rfs4_index_t *rfs4_clientid_idx; 290 static rfs4_index_t *rfs4_nfsclnt_idx; 291 static rfs4_table_t *rfs4_clntip_tab; 292 static rfs4_index_t *rfs4_clntip_idx; 293 static rfs4_table_t *rfs4_openowner_tab; 294 static rfs4_index_t *rfs4_openowner_idx; 295 static rfs4_table_t *rfs4_state_tab; 296 static rfs4_index_t *rfs4_state_idx; 297 static rfs4_index_t *rfs4_state_owner_file_idx; 298 static rfs4_index_t *rfs4_state_file_idx; 299 static rfs4_table_t *rfs4_lo_state_tab; 300 static rfs4_index_t *rfs4_lo_state_idx; 301 static rfs4_index_t *rfs4_lo_state_owner_idx; 302 static rfs4_table_t *rfs4_lockowner_tab; 303 static rfs4_index_t *rfs4_lockowner_idx; 304 static rfs4_index_t *rfs4_lockowner_pid_idx; 305 static rfs4_table_t *rfs4_file_tab; 306 static rfs4_index_t *rfs4_file_idx; 307 static rfs4_table_t *rfs4_deleg_state_tab; 308 static rfs4_index_t *rfs4_deleg_idx; 309 static rfs4_index_t *rfs4_deleg_state_idx; 310 311 #define MAXTABSZ 1024*1024 312 313 /* The values below are rfs4_lease_time units */ 314 315 #ifdef DEBUG 316 #define CLIENT_CACHE_TIME 1 317 #define OPENOWNER_CACHE_TIME 1 318 #define STATE_CACHE_TIME 1 319 #define LO_STATE_CACHE_TIME 1 320 #define LOCKOWNER_CACHE_TIME 1 321 #define FILE_CACHE_TIME 3 322 #define DELEG_STATE_CACHE_TIME 1 323 #else 324 #define CLIENT_CACHE_TIME 10 325 #define OPENOWNER_CACHE_TIME 5 326 #define STATE_CACHE_TIME 1 327 #define LO_STATE_CACHE_TIME 1 328 #define LOCKOWNER_CACHE_TIME 3 329 #define FILE_CACHE_TIME 40 330 #define DELEG_STATE_CACHE_TIME 1 331 #endif 332 333 334 static time_t rfs4_client_cache_time = 0; 335 static time_t rfs4_clntip_cache_time = 0; 336 static time_t rfs4_openowner_cache_time = 0; 337 static time_t rfs4_state_cache_time = 0; 338 static time_t rfs4_lo_state_cache_time = 0; 339 static time_t rfs4_lockowner_cache_time = 0; 340 static time_t rfs4_file_cache_time = 0; 341 static time_t rfs4_deleg_state_cache_time = 0; 342 343 static bool_t rfs4_client_create(rfs4_entry_t, void *); 344 static void rfs4_dss_remove_cpleaf(rfs4_client_t *); 345 static void rfs4_dss_remove_leaf(rfs4_servinst_t *, char *, char *); 346 static void rfs4_client_destroy(rfs4_entry_t); 347 static bool_t rfs4_client_expiry(rfs4_entry_t); 348 static uint32_t clientid_hash(void *); 349 static bool_t clientid_compare(rfs4_entry_t, void *); 350 static void *clientid_mkkey(rfs4_entry_t); 351 static uint32_t nfsclnt_hash(void *); 352 static bool_t nfsclnt_compare(rfs4_entry_t, void *); 353 static void *nfsclnt_mkkey(rfs4_entry_t); 354 static bool_t rfs4_clntip_expiry(rfs4_entry_t); 355 static void rfs4_clntip_destroy(rfs4_entry_t); 356 static bool_t rfs4_clntip_create(rfs4_entry_t, void *); 357 static uint32_t clntip_hash(void *); 358 static bool_t clntip_compare(rfs4_entry_t, void *); 359 static void *clntip_mkkey(rfs4_entry_t); 360 static bool_t rfs4_openowner_create(rfs4_entry_t, void *); 361 static void rfs4_openowner_destroy(rfs4_entry_t); 362 static bool_t rfs4_openowner_expiry(rfs4_entry_t); 363 static uint32_t openowner_hash(void *); 364 static bool_t openowner_compare(rfs4_entry_t, void *); 365 static void *openowner_mkkey(rfs4_entry_t); 366 static bool_t rfs4_state_create(rfs4_entry_t, void *); 367 static void rfs4_state_destroy(rfs4_entry_t); 368 static bool_t rfs4_state_expiry(rfs4_entry_t); 369 static uint32_t state_hash(void *); 370 static bool_t state_compare(rfs4_entry_t, void *); 371 static void *state_mkkey(rfs4_entry_t); 372 static uint32_t state_owner_file_hash(void *); 373 static bool_t state_owner_file_compare(rfs4_entry_t, void *); 374 static void *state_owner_file_mkkey(rfs4_entry_t); 375 static uint32_t state_file_hash(void *); 376 static bool_t state_file_compare(rfs4_entry_t, void *); 377 static void *state_file_mkkey(rfs4_entry_t); 378 static bool_t rfs4_lo_state_create(rfs4_entry_t, void *); 379 static void rfs4_lo_state_destroy(rfs4_entry_t); 380 static bool_t rfs4_lo_state_expiry(rfs4_entry_t); 381 static uint32_t lo_state_hash(void *); 382 static bool_t lo_state_compare(rfs4_entry_t, void *); 383 static void *lo_state_mkkey(rfs4_entry_t); 384 static uint32_t lo_state_lo_hash(void *); 385 static bool_t lo_state_lo_compare(rfs4_entry_t, void *); 386 static void *lo_state_lo_mkkey(rfs4_entry_t); 387 static bool_t rfs4_lockowner_create(rfs4_entry_t, void *); 388 static void rfs4_lockowner_destroy(rfs4_entry_t); 389 static bool_t rfs4_lockowner_expiry(rfs4_entry_t); 390 static uint32_t lockowner_hash(void *); 391 static bool_t lockowner_compare(rfs4_entry_t, void *); 392 static void *lockowner_mkkey(rfs4_entry_t); 393 static uint32_t pid_hash(void *); 394 static bool_t pid_compare(rfs4_entry_t, void *); 395 static void *pid_mkkey(rfs4_entry_t); 396 static bool_t rfs4_file_create(rfs4_entry_t, void *); 397 static void rfs4_file_destroy(rfs4_entry_t); 398 static uint32_t file_hash(void *); 399 static bool_t file_compare(rfs4_entry_t, void *); 400 static void *file_mkkey(rfs4_entry_t); 401 static bool_t rfs4_deleg_state_create(rfs4_entry_t, void *); 402 static void rfs4_deleg_state_destroy(rfs4_entry_t); 403 static bool_t rfs4_deleg_state_expiry(rfs4_entry_t); 404 static uint32_t deleg_hash(void *); 405 static bool_t deleg_compare(rfs4_entry_t, void *); 406 static void *deleg_mkkey(rfs4_entry_t); 407 static uint32_t deleg_state_hash(void *); 408 static bool_t deleg_state_compare(rfs4_entry_t, void *); 409 static void *deleg_state_mkkey(rfs4_entry_t); 410 411 static void rfs4_state_rele_nounlock(rfs4_state_t *); 412 413 static int rfs4_ss_enabled = 0; 414 415 extern void (*rfs4_client_clrst)(struct nfs4clrst_args *); 416 417 void 418 rfs4_ss_pnfree(rfs4_ss_pn_t *ss_pn) 419 { 420 kmem_free(ss_pn, sizeof (rfs4_ss_pn_t)); 421 } 422 423 static rfs4_ss_pn_t * 424 rfs4_ss_pnalloc(char *dir, char *leaf) 425 { 426 rfs4_ss_pn_t *ss_pn; 427 int dir_len, leaf_len; 428 429 /* 430 * validate we have a resonable path 431 * (account for the '/' and trailing null) 432 */ 433 if ((dir_len = strlen(dir)) > MAXPATHLEN || 434 (leaf_len = strlen(leaf)) > MAXNAMELEN || 435 (dir_len + leaf_len + 2) > MAXPATHLEN) { 436 return (NULL); 437 } 438 439 ss_pn = kmem_alloc(sizeof (rfs4_ss_pn_t), KM_SLEEP); 440 441 (void) snprintf(ss_pn->pn, MAXPATHLEN, "%s/%s", dir, leaf); 442 /* Handy pointer to just the leaf name */ 443 ss_pn->leaf = ss_pn->pn + dir_len + 1; 444 return (ss_pn); 445 } 446 447 448 /* 449 * Move the "leaf" filename from "sdir" directory 450 * to the "ddir" directory. Return the pathname of 451 * the destination unless the rename fails in which 452 * case we need to return the source pathname. 453 */ 454 static rfs4_ss_pn_t * 455 rfs4_ss_movestate(char *sdir, char *ddir, char *leaf) 456 { 457 rfs4_ss_pn_t *src, *dst; 458 459 if ((src = rfs4_ss_pnalloc(sdir, leaf)) == NULL) 460 return (NULL); 461 462 if ((dst = rfs4_ss_pnalloc(ddir, leaf)) == NULL) { 463 rfs4_ss_pnfree(src); 464 return (NULL); 465 } 466 467 /* 468 * If the rename fails we shall return the src 469 * pathname and free the dst. Otherwise we need 470 * to free the src and return the dst pathanme. 471 */ 472 if (vn_rename(src->pn, dst->pn, UIO_SYSSPACE)) { 473 rfs4_ss_pnfree(dst); 474 return (src); 475 } 476 rfs4_ss_pnfree(src); 477 return (dst); 478 } 479 480 481 static rfs4_oldstate_t * 482 rfs4_ss_getstate(vnode_t *dvp, rfs4_ss_pn_t *ss_pn) 483 { 484 struct uio uio; 485 struct iovec iov[3]; 486 487 rfs4_oldstate_t *cl_ss = NULL; 488 vnode_t *vp; 489 vattr_t va; 490 uint_t id_len; 491 int err, kill_file, file_vers; 492 493 if (ss_pn == NULL) 494 return (NULL); 495 496 /* 497 * open the state file. 498 */ 499 if (vn_open(ss_pn->pn, UIO_SYSSPACE, FREAD, 0, &vp, 0, 0) != 0) { 500 return (NULL); 501 } 502 503 if (vp->v_type != VREG) { 504 (void) VOP_CLOSE(vp, FREAD, 1, (offset_t)0, CRED(), NULL); 505 VN_RELE(vp); 506 return (NULL); 507 } 508 509 err = VOP_ACCESS(vp, VREAD, 0, CRED(), NULL); 510 if (err) { 511 /* 512 * We don't have read access? better get the heck out. 513 */ 514 (void) VOP_CLOSE(vp, FREAD, 1, (offset_t)0, CRED(), NULL); 515 VN_RELE(vp); 516 return (NULL); 517 } 518 519 (void) VOP_RWLOCK(vp, V_WRITELOCK_FALSE, NULL); 520 /* 521 * get the file size to do some basic validation 522 */ 523 va.va_mask = AT_SIZE; 524 err = VOP_GETATTR(vp, &va, 0, CRED(), NULL); 525 526 kill_file = (va.va_size == 0 || va.va_size < 527 (NFS4_VERIFIER_SIZE + sizeof (uint_t)+1)); 528 529 if (err || kill_file) { 530 VOP_RWUNLOCK(vp, V_WRITELOCK_FALSE, NULL); 531 (void) VOP_CLOSE(vp, FREAD, 1, (offset_t)0, CRED(), NULL); 532 VN_RELE(vp); 533 if (kill_file) { 534 (void) VOP_REMOVE(dvp, ss_pn->leaf, CRED(), NULL, 0); 535 } 536 return (NULL); 537 } 538 539 cl_ss = kmem_alloc(sizeof (rfs4_oldstate_t), KM_SLEEP); 540 541 /* 542 * build iovecs to read in the file_version, verifier and id_len 543 */ 544 iov[0].iov_base = (caddr_t)&file_vers; 545 iov[0].iov_len = sizeof (int); 546 iov[1].iov_base = (caddr_t)&cl_ss->cl_id4.verifier; 547 iov[1].iov_len = NFS4_VERIFIER_SIZE; 548 iov[2].iov_base = (caddr_t)&id_len; 549 iov[2].iov_len = sizeof (uint_t); 550 551 uio.uio_iov = iov; 552 uio.uio_iovcnt = 3; 553 uio.uio_segflg = UIO_SYSSPACE; 554 uio.uio_loffset = 0; 555 uio.uio_resid = sizeof (int) + NFS4_VERIFIER_SIZE + sizeof (uint_t); 556 557 if (err = VOP_READ(vp, &uio, FREAD, CRED(), NULL)) { 558 VOP_RWUNLOCK(vp, V_WRITELOCK_FALSE, NULL); 559 (void) VOP_CLOSE(vp, FREAD, 1, (offset_t)0, CRED(), NULL); 560 VN_RELE(vp); 561 kmem_free(cl_ss, sizeof (rfs4_oldstate_t)); 562 return (NULL); 563 } 564 565 /* 566 * if the file_version doesn't match or if the 567 * id_len is zero or the combination of the verifier, 568 * id_len and id_val is bigger than the file we have 569 * a problem. If so ditch the file. 570 */ 571 kill_file = (file_vers != NFS4_SS_VERSION || id_len == 0 || 572 (id_len + NFS4_VERIFIER_SIZE + sizeof (uint_t)) > va.va_size); 573 574 if (err || kill_file) { 575 VOP_RWUNLOCK(vp, V_WRITELOCK_FALSE, NULL); 576 (void) VOP_CLOSE(vp, FREAD, 1, (offset_t)0, CRED(), NULL); 577 VN_RELE(vp); 578 kmem_free(cl_ss, sizeof (rfs4_oldstate_t)); 579 if (kill_file) { 580 (void) VOP_REMOVE(dvp, ss_pn->leaf, CRED(), NULL, 0); 581 } 582 return (NULL); 583 } 584 585 /* 586 * now get the client id value 587 */ 588 cl_ss->cl_id4.id_val = kmem_alloc(id_len, KM_SLEEP); 589 iov[0].iov_base = cl_ss->cl_id4.id_val; 590 iov[0].iov_len = id_len; 591 592 uio.uio_iov = iov; 593 uio.uio_iovcnt = 1; 594 uio.uio_segflg = UIO_SYSSPACE; 595 uio.uio_resid = cl_ss->cl_id4.id_len = id_len; 596 597 if (err = VOP_READ(vp, &uio, FREAD, CRED(), NULL)) { 598 VOP_RWUNLOCK(vp, V_WRITELOCK_FALSE, NULL); 599 (void) VOP_CLOSE(vp, FREAD, 1, (offset_t)0, CRED(), NULL); 600 VN_RELE(vp); 601 kmem_free(cl_ss->cl_id4.id_val, id_len); 602 kmem_free(cl_ss, sizeof (rfs4_oldstate_t)); 603 return (NULL); 604 } 605 606 VOP_RWUNLOCK(vp, V_WRITELOCK_FALSE, NULL); 607 (void) VOP_CLOSE(vp, FREAD, 1, (offset_t)0, CRED(), NULL); 608 VN_RELE(vp); 609 return (cl_ss); 610 } 611 612 #ifdef nextdp 613 #undef nextdp 614 #endif 615 #define nextdp(dp) ((struct dirent64 *)((char *)(dp) + (dp)->d_reclen)) 616 617 /* 618 * Add entries from statedir to supplied oldstate list. 619 * Optionally, move all entries from statedir -> destdir. 620 */ 621 void 622 rfs4_ss_oldstate(rfs4_oldstate_t *oldstate, char *statedir, char *destdir) 623 { 624 rfs4_ss_pn_t *ss_pn; 625 rfs4_oldstate_t *cl_ss = NULL; 626 char *dirt = NULL; 627 int err, dir_eof = 0, size = 0; 628 vnode_t *dvp; 629 struct iovec iov; 630 struct uio uio; 631 struct dirent64 *dep; 632 offset_t dirchunk_offset = 0; 633 634 /* 635 * open the state directory 636 */ 637 if (vn_open(statedir, UIO_SYSSPACE, FREAD, 0, &dvp, 0, 0)) 638 return; 639 640 if (dvp->v_type != VDIR || VOP_ACCESS(dvp, VREAD, 0, CRED(), NULL)) 641 goto out; 642 643 dirt = kmem_alloc(RFS4_SS_DIRSIZE, KM_SLEEP); 644 645 /* 646 * Get and process the directory entries 647 */ 648 while (!dir_eof) { 649 (void) VOP_RWLOCK(dvp, V_WRITELOCK_FALSE, NULL); 650 iov.iov_base = dirt; 651 iov.iov_len = RFS4_SS_DIRSIZE; 652 uio.uio_iov = &iov; 653 uio.uio_iovcnt = 1; 654 uio.uio_segflg = UIO_SYSSPACE; 655 uio.uio_loffset = dirchunk_offset; 656 uio.uio_resid = RFS4_SS_DIRSIZE; 657 658 err = VOP_READDIR(dvp, &uio, CRED(), &dir_eof, NULL, 0); 659 VOP_RWUNLOCK(dvp, V_WRITELOCK_FALSE, NULL); 660 if (err) 661 goto out; 662 663 size = RFS4_SS_DIRSIZE - uio.uio_resid; 664 665 /* 666 * Process all the directory entries in this 667 * readdir chunk 668 */ 669 for (dep = (struct dirent64 *)dirt; size > 0; 670 dep = nextdp(dep)) { 671 672 size -= dep->d_reclen; 673 dirchunk_offset = dep->d_off; 674 675 /* 676 * Skip '.' and '..' 677 */ 678 if (NFS_IS_DOTNAME(dep->d_name)) 679 continue; 680 681 ss_pn = rfs4_ss_pnalloc(statedir, dep->d_name); 682 if (ss_pn == NULL) 683 continue; 684 685 if (cl_ss = rfs4_ss_getstate(dvp, ss_pn)) { 686 if (destdir != NULL) { 687 rfs4_ss_pnfree(ss_pn); 688 cl_ss->ss_pn = rfs4_ss_movestate( 689 statedir, destdir, dep->d_name); 690 } else { 691 cl_ss->ss_pn = ss_pn; 692 } 693 insque(cl_ss, oldstate); 694 } else { 695 rfs4_ss_pnfree(ss_pn); 696 } 697 } 698 } 699 700 out: 701 (void) VOP_CLOSE(dvp, FREAD, 1, (offset_t)0, CRED(), NULL); 702 VN_RELE(dvp); 703 if (dirt) 704 kmem_free((caddr_t)dirt, RFS4_SS_DIRSIZE); 705 } 706 707 static void 708 rfs4_ss_init(void) 709 { 710 int npaths = 1; 711 char *default_dss_path = NFS4_DSS_VAR_DIR; 712 713 /* read the default stable storage state */ 714 rfs4_dss_readstate(npaths, &default_dss_path); 715 716 rfs4_ss_enabled = 1; 717 } 718 719 static void 720 rfs4_ss_fini(void) 721 { 722 rfs4_servinst_t *sip; 723 724 mutex_enter(&rfs4_servinst_lock); 725 sip = rfs4_cur_servinst; 726 while (sip != NULL) { 727 rfs4_dss_clear_oldstate(sip); 728 sip = sip->next; 729 } 730 mutex_exit(&rfs4_servinst_lock); 731 } 732 733 /* 734 * Remove all oldstate files referenced by this servinst. 735 */ 736 static void 737 rfs4_dss_clear_oldstate(rfs4_servinst_t *sip) 738 { 739 rfs4_oldstate_t *os_head, *osp; 740 741 rw_enter(&sip->oldstate_lock, RW_WRITER); 742 os_head = sip->oldstate; 743 744 if (os_head == NULL) 745 return; 746 747 /* skip dummy entry */ 748 osp = os_head->next; 749 while (osp != os_head) { 750 char *leaf = osp->ss_pn->leaf; 751 rfs4_oldstate_t *os_next; 752 753 rfs4_dss_remove_leaf(sip, NFS4_DSS_OLDSTATE_LEAF, leaf); 754 755 if (osp->cl_id4.id_val) 756 kmem_free(osp->cl_id4.id_val, osp->cl_id4.id_len); 757 if (osp->ss_pn) 758 kmem_free(osp->ss_pn, sizeof (rfs4_ss_pn_t)); 759 760 os_next = osp->next; 761 remque(osp); 762 kmem_free(osp, sizeof (rfs4_oldstate_t)); 763 osp = os_next; 764 } 765 766 /* free dummy entry */ 767 kmem_free(osp, sizeof (rfs4_oldstate_t)); 768 769 sip->oldstate = NULL; 770 771 rw_exit(&sip->oldstate_lock); 772 } 773 774 /* 775 * Form the state and oldstate paths, and read in the stable storage files. 776 */ 777 void 778 rfs4_dss_readstate(int npaths, char **paths) 779 { 780 int i; 781 char *state, *oldstate; 782 783 state = kmem_alloc(MAXPATHLEN, KM_SLEEP); 784 oldstate = kmem_alloc(MAXPATHLEN, KM_SLEEP); 785 786 for (i = 0; i < npaths; i++) { 787 char *path = paths[i]; 788 789 (void) sprintf(state, "%s/%s", path, NFS4_DSS_STATE_LEAF); 790 (void) sprintf(oldstate, "%s/%s", path, NFS4_DSS_OLDSTATE_LEAF); 791 792 /* 793 * Populate the current server instance's oldstate list. 794 * 795 * 1. Read stable storage data from old state directory, 796 * leaving its contents alone. 797 * 798 * 2. Read stable storage data from state directory, 799 * and move the latter's contents to old state 800 * directory. 801 */ 802 rfs4_ss_oldstate(rfs4_cur_servinst->oldstate, oldstate, NULL); 803 rfs4_ss_oldstate(rfs4_cur_servinst->oldstate, state, oldstate); 804 } 805 806 kmem_free(state, MAXPATHLEN); 807 kmem_free(oldstate, MAXPATHLEN); 808 } 809 810 811 /* 812 * Check if we are still in grace and if the client can be 813 * granted permission to perform reclaims. 814 */ 815 void 816 rfs4_ss_chkclid(rfs4_client_t *cp) 817 { 818 rfs4_servinst_t *sip; 819 820 /* 821 * It should be sufficient to check the oldstate data for just 822 * this client's instance. However, since our per-instance 823 * client grouping is solely temporal, HA-NFSv4 RG failover 824 * might result in clients of the same RG being partitioned into 825 * separate instances. 826 * 827 * Until the client grouping is improved, we must check the 828 * oldstate data for all instances with an active grace period. 829 * 830 * This also serves as the mechanism to remove stale oldstate data. 831 * The first time we check an instance after its grace period has 832 * expired, the oldstate data should be cleared. 833 * 834 * Start at the current instance, and walk the list backwards 835 * to the first. 836 */ 837 mutex_enter(&rfs4_servinst_lock); 838 for (sip = rfs4_cur_servinst; sip != NULL; sip = sip->prev) { 839 rfs4_ss_chkclid_sip(cp, sip); 840 841 /* if the above check found this client, we're done */ 842 if (cp->rc_can_reclaim) 843 break; 844 } 845 mutex_exit(&rfs4_servinst_lock); 846 } 847 848 static void 849 rfs4_ss_chkclid_sip(rfs4_client_t *cp, rfs4_servinst_t *sip) 850 { 851 rfs4_oldstate_t *osp, *os_head; 852 853 /* short circuit everything if this server instance has no oldstate */ 854 rw_enter(&sip->oldstate_lock, RW_READER); 855 os_head = sip->oldstate; 856 rw_exit(&sip->oldstate_lock); 857 if (os_head == NULL) 858 return; 859 860 /* 861 * If this server instance is no longer in a grace period then 862 * the client won't be able to reclaim. No further need for this 863 * instance's oldstate data, so it can be cleared. 864 */ 865 if (!rfs4_servinst_in_grace(sip)) 866 return; 867 868 /* this instance is still in grace; search for the clientid */ 869 870 rw_enter(&sip->oldstate_lock, RW_READER); 871 872 os_head = sip->oldstate; 873 /* skip dummy entry */ 874 osp = os_head->next; 875 while (osp != os_head) { 876 if (osp->cl_id4.id_len == cp->rc_nfs_client.id_len) { 877 if (bcmp(osp->cl_id4.id_val, cp->rc_nfs_client.id_val, 878 osp->cl_id4.id_len) == 0) { 879 cp->rc_can_reclaim = 1; 880 break; 881 } 882 } 883 osp = osp->next; 884 } 885 886 rw_exit(&sip->oldstate_lock); 887 } 888 889 /* 890 * Place client information into stable storage: 1/3. 891 * First, generate the leaf filename, from the client's IP address and 892 * the server-generated short-hand clientid. 893 */ 894 void 895 rfs4_ss_clid(rfs4_client_t *cp) 896 { 897 const char *kinet_ntop6(uchar_t *, char *, size_t); 898 char leaf[MAXNAMELEN], buf[INET6_ADDRSTRLEN]; 899 struct sockaddr *ca; 900 uchar_t *b; 901 902 if (rfs4_ss_enabled == 0) { 903 return; 904 } 905 906 buf[0] = 0; 907 908 ca = (struct sockaddr *)&cp->rc_addr; 909 910 /* 911 * Convert the caller's IP address to a dotted string 912 */ 913 if (ca->sa_family == AF_INET) { 914 b = (uchar_t *)&((struct sockaddr_in *)ca)->sin_addr; 915 (void) sprintf(buf, "%03d.%03d.%03d.%03d", b[0] & 0xFF, 916 b[1] & 0xFF, b[2] & 0xFF, b[3] & 0xFF); 917 } else if (ca->sa_family == AF_INET6) { 918 struct sockaddr_in6 *sin6; 919 920 sin6 = (struct sockaddr_in6 *)ca; 921 (void) kinet_ntop6((uchar_t *)&sin6->sin6_addr, 922 buf, INET6_ADDRSTRLEN); 923 } 924 925 (void) snprintf(leaf, MAXNAMELEN, "%s-%llx", buf, 926 (longlong_t)cp->rc_clientid); 927 rfs4_ss_clid_write(cp, leaf); 928 } 929 930 /* 931 * Place client information into stable storage: 2/3. 932 * DSS: distributed stable storage: the file may need to be written to 933 * multiple directories. 934 */ 935 static void 936 rfs4_ss_clid_write(rfs4_client_t *cp, char *leaf) 937 { 938 rfs4_servinst_t *sip; 939 940 /* 941 * It should be sufficient to write the leaf file to (all) DSS paths 942 * associated with just this client's instance. However, since our 943 * per-instance client grouping is solely temporal, HA-NFSv4 RG 944 * failover might result in us losing DSS data. 945 * 946 * Until the client grouping is improved, we must write the DSS data 947 * to all instances' paths. Start at the current instance, and 948 * walk the list backwards to the first. 949 */ 950 mutex_enter(&rfs4_servinst_lock); 951 for (sip = rfs4_cur_servinst; sip != NULL; sip = sip->prev) { 952 int i, npaths = sip->dss_npaths; 953 954 /* write the leaf file to all DSS paths */ 955 for (i = 0; i < npaths; i++) { 956 rfs4_dss_path_t *dss_path = sip->dss_paths[i]; 957 958 /* HA-NFSv4 path might have been failed-away from us */ 959 if (dss_path == NULL) 960 continue; 961 962 rfs4_ss_clid_write_one(cp, dss_path->path, leaf); 963 } 964 } 965 mutex_exit(&rfs4_servinst_lock); 966 } 967 968 /* 969 * Place client information into stable storage: 3/3. 970 * Write the stable storage data to the requested file. 971 */ 972 static void 973 rfs4_ss_clid_write_one(rfs4_client_t *cp, char *dss_path, char *leaf) 974 { 975 int ioflag; 976 int file_vers = NFS4_SS_VERSION; 977 size_t dirlen; 978 struct uio uio; 979 struct iovec iov[4]; 980 char *dir; 981 rfs4_ss_pn_t *ss_pn; 982 vnode_t *vp; 983 nfs_client_id4 *cl_id4 = &(cp->rc_nfs_client); 984 985 /* allow 2 extra bytes for '/' & NUL */ 986 dirlen = strlen(dss_path) + strlen(NFS4_DSS_STATE_LEAF) + 2; 987 dir = kmem_alloc(dirlen, KM_SLEEP); 988 (void) sprintf(dir, "%s/%s", dss_path, NFS4_DSS_STATE_LEAF); 989 990 ss_pn = rfs4_ss_pnalloc(dir, leaf); 991 /* rfs4_ss_pnalloc takes its own copy */ 992 kmem_free(dir, dirlen); 993 if (ss_pn == NULL) 994 return; 995 996 if (vn_open(ss_pn->pn, UIO_SYSSPACE, FCREAT|FWRITE, 0600, &vp, 997 CRCREAT, 0)) { 998 rfs4_ss_pnfree(ss_pn); 999 return; 1000 } 1001 1002 /* 1003 * We need to record leaf - i.e. the filename - so that we know 1004 * what to remove, in the future. However, the dir part of cp->ss_pn 1005 * should never be referenced directly, since it's potentially only 1006 * one of several paths with this leaf in it. 1007 */ 1008 if (cp->rc_ss_pn != NULL) { 1009 if (strcmp(cp->rc_ss_pn->leaf, leaf) == 0) { 1010 /* we've already recorded *this* leaf */ 1011 rfs4_ss_pnfree(ss_pn); 1012 } else { 1013 /* replace with this leaf */ 1014 rfs4_ss_pnfree(cp->rc_ss_pn); 1015 cp->rc_ss_pn = ss_pn; 1016 } 1017 } else { 1018 cp->rc_ss_pn = ss_pn; 1019 } 1020 1021 /* 1022 * Build a scatter list that points to the nfs_client_id4 1023 */ 1024 iov[0].iov_base = (caddr_t)&file_vers; 1025 iov[0].iov_len = sizeof (int); 1026 iov[1].iov_base = (caddr_t)&(cl_id4->verifier); 1027 iov[1].iov_len = NFS4_VERIFIER_SIZE; 1028 iov[2].iov_base = (caddr_t)&(cl_id4->id_len); 1029 iov[2].iov_len = sizeof (uint_t); 1030 iov[3].iov_base = (caddr_t)cl_id4->id_val; 1031 iov[3].iov_len = cl_id4->id_len; 1032 1033 uio.uio_iov = iov; 1034 uio.uio_iovcnt = 4; 1035 uio.uio_loffset = 0; 1036 uio.uio_segflg = UIO_SYSSPACE; 1037 uio.uio_llimit = (rlim64_t)MAXOFFSET_T; 1038 uio.uio_resid = cl_id4->id_len + sizeof (int) + 1039 NFS4_VERIFIER_SIZE + sizeof (uint_t); 1040 1041 ioflag = uio.uio_fmode = (FWRITE|FSYNC); 1042 uio.uio_extflg = UIO_COPY_DEFAULT; 1043 1044 (void) VOP_RWLOCK(vp, V_WRITELOCK_TRUE, NULL); 1045 /* write the full client id to the file. */ 1046 (void) VOP_WRITE(vp, &uio, ioflag, CRED(), NULL); 1047 VOP_RWUNLOCK(vp, V_WRITELOCK_TRUE, NULL); 1048 1049 (void) VOP_CLOSE(vp, FWRITE, 1, (offset_t)0, CRED(), NULL); 1050 VN_RELE(vp); 1051 } 1052 1053 /* 1054 * DSS: distributed stable storage. 1055 * Unpack the list of paths passed by nfsd. 1056 * Use nvlist_alloc(9F) to manage the data. 1057 * The caller is responsible for allocating and freeing the buffer. 1058 */ 1059 int 1060 rfs4_dss_setpaths(char *buf, size_t buflen) 1061 { 1062 int error; 1063 1064 /* 1065 * If this is a "warm start", i.e. we previously had DSS paths, 1066 * preserve the old paths. 1067 */ 1068 if (rfs4_dss_paths != NULL) { 1069 /* 1070 * Before we lose the ptr, destroy the nvlist and pathnames 1071 * array from the warm start before this one. 1072 */ 1073 if (rfs4_dss_oldpaths) 1074 nvlist_free(rfs4_dss_oldpaths); 1075 rfs4_dss_oldpaths = rfs4_dss_paths; 1076 } 1077 1078 /* unpack the buffer into a searchable nvlist */ 1079 error = nvlist_unpack(buf, buflen, &rfs4_dss_paths, KM_SLEEP); 1080 if (error) 1081 return (error); 1082 1083 /* 1084 * Search the nvlist for the pathnames nvpair (which is the only nvpair 1085 * in the list, and record its location. 1086 */ 1087 error = nvlist_lookup_string_array(rfs4_dss_paths, NFS4_DSS_NVPAIR_NAME, 1088 &rfs4_dss_newpaths, &rfs4_dss_numnewpaths); 1089 return (error); 1090 } 1091 1092 /* 1093 * Ultimately the nfssys() call NFS4_CLR_STATE endsup here 1094 * to find and mark the client for forced expire. 1095 */ 1096 static void 1097 rfs4_client_scrub(rfs4_entry_t ent, void *arg) 1098 { 1099 rfs4_client_t *cp = (rfs4_client_t *)ent; 1100 struct nfs4clrst_args *clr = arg; 1101 struct sockaddr_in6 *ent_sin6; 1102 struct in6_addr clr_in6; 1103 struct sockaddr_in *ent_sin; 1104 struct in_addr clr_in; 1105 1106 if (clr->addr_type != cp->rc_addr.ss_family) { 1107 return; 1108 } 1109 1110 switch (clr->addr_type) { 1111 1112 case AF_INET6: 1113 /* copyin the address from user space */ 1114 if (copyin(clr->ap, &clr_in6, sizeof (clr_in6))) { 1115 break; 1116 } 1117 1118 ent_sin6 = (struct sockaddr_in6 *)&cp->rc_addr; 1119 1120 /* 1121 * now compare, and if equivalent mark entry 1122 * for forced expiration 1123 */ 1124 if (IN6_ARE_ADDR_EQUAL(&ent_sin6->sin6_addr, &clr_in6)) { 1125 cp->rc_forced_expire = 1; 1126 } 1127 break; 1128 1129 case AF_INET: 1130 /* copyin the address from user space */ 1131 if (copyin(clr->ap, &clr_in, sizeof (clr_in))) { 1132 break; 1133 } 1134 1135 ent_sin = (struct sockaddr_in *)&cp->rc_addr; 1136 1137 /* 1138 * now compare, and if equivalent mark entry 1139 * for forced expiration 1140 */ 1141 if (ent_sin->sin_addr.s_addr == clr_in.s_addr) { 1142 cp->rc_forced_expire = 1; 1143 } 1144 break; 1145 1146 default: 1147 /* force this assert to fail */ 1148 ASSERT(clr->addr_type != clr->addr_type); 1149 } 1150 } 1151 1152 /* 1153 * This is called from nfssys() in order to clear server state 1154 * for the specified client IP Address. 1155 */ 1156 void 1157 rfs4_clear_client_state(struct nfs4clrst_args *clr) 1158 { 1159 (void) rfs4_dbe_walk(rfs4_client_tab, rfs4_client_scrub, clr); 1160 } 1161 1162 /* 1163 * Used to initialize the NFSv4 server's state or database. All of 1164 * the tables are created and timers are set. Only called when NFSv4 1165 * service is provided. 1166 */ 1167 void 1168 rfs4_state_init() 1169 { 1170 int start_grace; 1171 extern boolean_t rfs4_cpr_callb(void *, int); 1172 char *dss_path = NFS4_DSS_VAR_DIR; 1173 1174 mutex_enter(&rfs4_state_lock); 1175 1176 /* 1177 * If the server state database has already been initialized, 1178 * skip it 1179 */ 1180 if (rfs4_server_state != NULL) { 1181 mutex_exit(&rfs4_state_lock); 1182 return; 1183 } 1184 1185 rw_init(&rfs4_findclient_lock, NULL, RW_DEFAULT, NULL); 1186 1187 /* 1188 * Set the boot time. If the server 1189 * has been restarted quickly and has had the opportunity to 1190 * service clients, then the start_time needs to be bumped 1191 * regardless. A small window but it exists... 1192 */ 1193 if (rfs4_start_time != gethrestime_sec()) 1194 rfs4_start_time = gethrestime_sec(); 1195 else 1196 rfs4_start_time++; 1197 1198 /* DSS: distributed stable storage: initialise served paths list */ 1199 rfs4_dss_pathlist = NULL; 1200 1201 /* 1202 * Create the first server instance, or a new one if the server has 1203 * been restarted; see above comments on rfs4_start_time. Don't 1204 * start its grace period; that will be done later, to maximise the 1205 * clients' recovery window. 1206 */ 1207 start_grace = 0; 1208 rfs4_servinst_create(start_grace, 1, &dss_path); 1209 1210 /* reset the "first NFSv4 request" status */ 1211 rfs4_seen_first_compound = 0; 1212 1213 /* 1214 * Add a CPR callback so that we can update client 1215 * access times to extend the lease after a suspend 1216 * and resume (using the same class as rpcmod/connmgr) 1217 */ 1218 cpr_id = callb_add(rfs4_cpr_callb, 0, CB_CL_CPR_RPC, "rfs4"); 1219 1220 /* set the various cache timers for table creation */ 1221 if (rfs4_client_cache_time == 0) 1222 rfs4_client_cache_time = CLIENT_CACHE_TIME; 1223 if (rfs4_openowner_cache_time == 0) 1224 rfs4_openowner_cache_time = OPENOWNER_CACHE_TIME; 1225 if (rfs4_state_cache_time == 0) 1226 rfs4_state_cache_time = STATE_CACHE_TIME; 1227 if (rfs4_lo_state_cache_time == 0) 1228 rfs4_lo_state_cache_time = LO_STATE_CACHE_TIME; 1229 if (rfs4_lockowner_cache_time == 0) 1230 rfs4_lockowner_cache_time = LOCKOWNER_CACHE_TIME; 1231 if (rfs4_file_cache_time == 0) 1232 rfs4_file_cache_time = FILE_CACHE_TIME; 1233 if (rfs4_deleg_state_cache_time == 0) 1234 rfs4_deleg_state_cache_time = DELEG_STATE_CACHE_TIME; 1235 1236 /* Create the overall database to hold all server state */ 1237 rfs4_server_state = rfs4_database_create(rfs4_database_debug); 1238 1239 /* Now create the individual tables */ 1240 rfs4_client_cache_time *= rfs4_lease_time; 1241 rfs4_client_tab = rfs4_table_create(rfs4_server_state, 1242 "Client", 1243 rfs4_client_cache_time, 1244 2, 1245 rfs4_client_create, 1246 rfs4_client_destroy, 1247 rfs4_client_expiry, 1248 sizeof (rfs4_client_t), 1249 TABSIZE, 1250 MAXTABSZ/8, 100); 1251 rfs4_nfsclnt_idx = rfs4_index_create(rfs4_client_tab, 1252 "nfs_client_id4", nfsclnt_hash, 1253 nfsclnt_compare, nfsclnt_mkkey, 1254 TRUE); 1255 rfs4_clientid_idx = rfs4_index_create(rfs4_client_tab, 1256 "client_id", clientid_hash, 1257 clientid_compare, clientid_mkkey, 1258 FALSE); 1259 1260 rfs4_clntip_cache_time = 86400 * 365; /* about a year */ 1261 rfs4_clntip_tab = rfs4_table_create(rfs4_server_state, 1262 "ClntIP", 1263 rfs4_clntip_cache_time, 1264 1, 1265 rfs4_clntip_create, 1266 rfs4_clntip_destroy, 1267 rfs4_clntip_expiry, 1268 sizeof (rfs4_clntip_t), 1269 TABSIZE, 1270 MAXTABSZ, 100); 1271 rfs4_clntip_idx = rfs4_index_create(rfs4_clntip_tab, 1272 "client_ip", clntip_hash, 1273 clntip_compare, clntip_mkkey, 1274 TRUE); 1275 1276 rfs4_openowner_cache_time *= rfs4_lease_time; 1277 rfs4_openowner_tab = rfs4_table_create(rfs4_server_state, 1278 "OpenOwner", 1279 rfs4_openowner_cache_time, 1280 1, 1281 rfs4_openowner_create, 1282 rfs4_openowner_destroy, 1283 rfs4_openowner_expiry, 1284 sizeof (rfs4_openowner_t), 1285 TABSIZE, 1286 MAXTABSZ, 100); 1287 rfs4_openowner_idx = rfs4_index_create(rfs4_openowner_tab, 1288 "open_owner4", openowner_hash, 1289 openowner_compare, 1290 openowner_mkkey, TRUE); 1291 1292 rfs4_state_cache_time *= rfs4_lease_time; 1293 rfs4_state_tab = rfs4_table_create(rfs4_server_state, 1294 "OpenStateID", 1295 rfs4_state_cache_time, 1296 3, 1297 rfs4_state_create, 1298 rfs4_state_destroy, 1299 rfs4_state_expiry, 1300 sizeof (rfs4_state_t), 1301 TABSIZE, 1302 MAXTABSZ, 100); 1303 1304 rfs4_state_owner_file_idx = rfs4_index_create(rfs4_state_tab, 1305 "Openowner-File", 1306 state_owner_file_hash, 1307 state_owner_file_compare, 1308 state_owner_file_mkkey, TRUE); 1309 1310 rfs4_state_idx = rfs4_index_create(rfs4_state_tab, 1311 "State-id", state_hash, 1312 state_compare, state_mkkey, FALSE); 1313 1314 rfs4_state_file_idx = rfs4_index_create(rfs4_state_tab, 1315 "File", state_file_hash, 1316 state_file_compare, state_file_mkkey, 1317 FALSE); 1318 1319 rfs4_lo_state_cache_time *= rfs4_lease_time; 1320 rfs4_lo_state_tab = rfs4_table_create(rfs4_server_state, 1321 "LockStateID", 1322 rfs4_lo_state_cache_time, 1323 2, 1324 rfs4_lo_state_create, 1325 rfs4_lo_state_destroy, 1326 rfs4_lo_state_expiry, 1327 sizeof (rfs4_lo_state_t), 1328 TABSIZE, 1329 MAXTABSZ, 100); 1330 1331 rfs4_lo_state_owner_idx = rfs4_index_create(rfs4_lo_state_tab, 1332 "lockownerxstate", 1333 lo_state_lo_hash, 1334 lo_state_lo_compare, 1335 lo_state_lo_mkkey, TRUE); 1336 1337 rfs4_lo_state_idx = rfs4_index_create(rfs4_lo_state_tab, 1338 "State-id", 1339 lo_state_hash, lo_state_compare, 1340 lo_state_mkkey, FALSE); 1341 1342 rfs4_lockowner_cache_time *= rfs4_lease_time; 1343 1344 rfs4_lockowner_tab = rfs4_table_create(rfs4_server_state, 1345 "Lockowner", 1346 rfs4_lockowner_cache_time, 1347 2, 1348 rfs4_lockowner_create, 1349 rfs4_lockowner_destroy, 1350 rfs4_lockowner_expiry, 1351 sizeof (rfs4_lockowner_t), 1352 TABSIZE, 1353 MAXTABSZ, 100); 1354 1355 rfs4_lockowner_idx = rfs4_index_create(rfs4_lockowner_tab, 1356 "lock_owner4", lockowner_hash, 1357 lockowner_compare, 1358 lockowner_mkkey, TRUE); 1359 1360 rfs4_lockowner_pid_idx = rfs4_index_create(rfs4_lockowner_tab, 1361 "pid", pid_hash, 1362 pid_compare, pid_mkkey, 1363 FALSE); 1364 1365 rfs4_file_cache_time *= rfs4_lease_time; 1366 rfs4_file_tab = rfs4_table_create(rfs4_server_state, 1367 "File", 1368 rfs4_file_cache_time, 1369 1, 1370 rfs4_file_create, 1371 rfs4_file_destroy, 1372 NULL, 1373 sizeof (rfs4_file_t), 1374 TABSIZE, 1375 MAXTABSZ, -1); 1376 1377 rfs4_file_idx = rfs4_index_create(rfs4_file_tab, 1378 "Filehandle", file_hash, 1379 file_compare, file_mkkey, TRUE); 1380 1381 rfs4_deleg_state_cache_time *= rfs4_lease_time; 1382 rfs4_deleg_state_tab = rfs4_table_create(rfs4_server_state, 1383 "DelegStateID", 1384 rfs4_deleg_state_cache_time, 1385 2, 1386 rfs4_deleg_state_create, 1387 rfs4_deleg_state_destroy, 1388 rfs4_deleg_state_expiry, 1389 sizeof (rfs4_deleg_state_t), 1390 TABSIZE, 1391 MAXTABSZ, 100); 1392 rfs4_deleg_idx = rfs4_index_create(rfs4_deleg_state_tab, 1393 "DelegByFileClient", 1394 deleg_hash, 1395 deleg_compare, 1396 deleg_mkkey, TRUE); 1397 1398 rfs4_deleg_state_idx = rfs4_index_create(rfs4_deleg_state_tab, 1399 "DelegState", 1400 deleg_state_hash, 1401 deleg_state_compare, 1402 deleg_state_mkkey, FALSE); 1403 1404 /* 1405 * Init the stable storage. 1406 */ 1407 rfs4_ss_init(); 1408 1409 rfs4_client_clrst = rfs4_clear_client_state; 1410 1411 mutex_exit(&rfs4_state_lock); 1412 } 1413 1414 1415 /* 1416 * Used at server shutdown to cleanup all of the NFSv4 server's structures 1417 * and other state. 1418 */ 1419 void 1420 rfs4_state_fini() 1421 { 1422 rfs4_database_t *dbp; 1423 1424 mutex_enter(&rfs4_state_lock); 1425 1426 if (rfs4_server_state == NULL) { 1427 mutex_exit(&rfs4_state_lock); 1428 return; 1429 } 1430 1431 rfs4_client_clrst = NULL; 1432 1433 rfs4_set_deleg_policy(SRV_NEVER_DELEGATE); 1434 dbp = rfs4_server_state; 1435 rfs4_server_state = NULL; 1436 1437 /* 1438 * Cleanup the CPR callback. 1439 */ 1440 if (cpr_id) 1441 (void) callb_delete(cpr_id); 1442 1443 rw_destroy(&rfs4_findclient_lock); 1444 1445 /* First stop all of the reaper threads in the database */ 1446 rfs4_database_shutdown(dbp); 1447 /* clean up any dangling stable storage structures */ 1448 rfs4_ss_fini(); 1449 /* Now actually destroy/release the database and its tables */ 1450 rfs4_database_destroy(dbp); 1451 1452 /* Reset the cache timers for next time */ 1453 rfs4_client_cache_time = 0; 1454 rfs4_openowner_cache_time = 0; 1455 rfs4_state_cache_time = 0; 1456 rfs4_lo_state_cache_time = 0; 1457 rfs4_lockowner_cache_time = 0; 1458 rfs4_file_cache_time = 0; 1459 rfs4_deleg_state_cache_time = 0; 1460 1461 mutex_exit(&rfs4_state_lock); 1462 1463 /* destroy server instances and current instance ptr */ 1464 rfs4_servinst_destroy_all(); 1465 1466 /* reset the "first NFSv4 request" status */ 1467 rfs4_seen_first_compound = 0; 1468 1469 /* DSS: distributed stable storage */ 1470 if (rfs4_dss_oldpaths) 1471 nvlist_free(rfs4_dss_oldpaths); 1472 if (rfs4_dss_paths) 1473 nvlist_free(rfs4_dss_paths); 1474 rfs4_dss_paths = rfs4_dss_oldpaths = NULL; 1475 } 1476 1477 typedef union { 1478 struct { 1479 uint32_t start_time; 1480 uint32_t c_id; 1481 } impl_id; 1482 clientid4 id4; 1483 } cid; 1484 1485 static int foreign_stateid(stateid_t *id); 1486 static int foreign_clientid(cid *cidp); 1487 static void embed_nodeid(cid *cidp); 1488 1489 typedef union { 1490 struct { 1491 uint32_t c_id; 1492 uint32_t gen_num; 1493 } cv_impl; 1494 verifier4 confirm_verf; 1495 } scid_confirm_verf; 1496 1497 static uint32_t 1498 clientid_hash(void *key) 1499 { 1500 cid *idp = key; 1501 1502 return (idp->impl_id.c_id); 1503 } 1504 1505 static bool_t 1506 clientid_compare(rfs4_entry_t entry, void *key) 1507 { 1508 rfs4_client_t *cp = (rfs4_client_t *)entry; 1509 clientid4 *idp = key; 1510 1511 return (*idp == cp->rc_clientid); 1512 } 1513 1514 static void * 1515 clientid_mkkey(rfs4_entry_t entry) 1516 { 1517 rfs4_client_t *cp = (rfs4_client_t *)entry; 1518 1519 return (&cp->rc_clientid); 1520 } 1521 1522 static uint32_t 1523 nfsclnt_hash(void *key) 1524 { 1525 nfs_client_id4 *client = key; 1526 int i; 1527 uint32_t hash = 0; 1528 1529 for (i = 0; i < client->id_len; i++) { 1530 hash <<= 1; 1531 hash += (uint_t)client->id_val[i]; 1532 } 1533 return (hash); 1534 } 1535 1536 1537 static bool_t 1538 nfsclnt_compare(rfs4_entry_t entry, void *key) 1539 { 1540 rfs4_client_t *cp = (rfs4_client_t *)entry; 1541 nfs_client_id4 *nfs_client = key; 1542 1543 if (cp->rc_nfs_client.id_len != nfs_client->id_len) 1544 return (FALSE); 1545 1546 return (bcmp(cp->rc_nfs_client.id_val, nfs_client->id_val, 1547 nfs_client->id_len) == 0); 1548 } 1549 1550 static void * 1551 nfsclnt_mkkey(rfs4_entry_t entry) 1552 { 1553 rfs4_client_t *cp = (rfs4_client_t *)entry; 1554 1555 return (&cp->rc_nfs_client); 1556 } 1557 1558 static bool_t 1559 rfs4_client_expiry(rfs4_entry_t u_entry) 1560 { 1561 rfs4_client_t *cp = (rfs4_client_t *)u_entry; 1562 bool_t cp_expired; 1563 1564 if (rfs4_dbe_is_invalid(cp->rc_dbe)) { 1565 cp->rc_ss_remove = 1; 1566 return (TRUE); 1567 } 1568 /* 1569 * If the sysadmin has used clear_locks for this 1570 * entry then forced_expire will be set and we 1571 * want this entry to be reaped. Or the entry 1572 * has exceeded its lease period. 1573 */ 1574 cp_expired = (cp->rc_forced_expire || 1575 (gethrestime_sec() - cp->rc_last_access 1576 > rfs4_lease_time)); 1577 1578 if (!cp->rc_ss_remove && cp_expired) 1579 cp->rc_ss_remove = 1; 1580 return (cp_expired); 1581 } 1582 1583 /* 1584 * Remove the leaf file from all distributed stable storage paths. 1585 */ 1586 static void 1587 rfs4_dss_remove_cpleaf(rfs4_client_t *cp) 1588 { 1589 rfs4_servinst_t *sip; 1590 char *leaf = cp->rc_ss_pn->leaf; 1591 1592 /* 1593 * since the state files are written to all DSS 1594 * paths we must remove this leaf file instance 1595 * from all server instances. 1596 */ 1597 1598 mutex_enter(&rfs4_servinst_lock); 1599 for (sip = rfs4_cur_servinst; sip != NULL; sip = sip->prev) { 1600 /* remove the leaf file associated with this server instance */ 1601 rfs4_dss_remove_leaf(sip, NFS4_DSS_STATE_LEAF, leaf); 1602 } 1603 mutex_exit(&rfs4_servinst_lock); 1604 } 1605 1606 static void 1607 rfs4_dss_remove_leaf(rfs4_servinst_t *sip, char *dir_leaf, char *leaf) 1608 { 1609 int i, npaths = sip->dss_npaths; 1610 1611 for (i = 0; i < npaths; i++) { 1612 rfs4_dss_path_t *dss_path = sip->dss_paths[i]; 1613 char *path, *dir; 1614 size_t pathlen; 1615 1616 /* the HA-NFSv4 path might have been failed-over away from us */ 1617 if (dss_path == NULL) 1618 continue; 1619 1620 dir = dss_path->path; 1621 1622 /* allow 3 extra bytes for two '/' & a NUL */ 1623 pathlen = strlen(dir) + strlen(dir_leaf) + strlen(leaf) + 3; 1624 path = kmem_alloc(pathlen, KM_SLEEP); 1625 (void) sprintf(path, "%s/%s/%s", dir, dir_leaf, leaf); 1626 1627 (void) vn_remove(path, UIO_SYSSPACE, RMFILE); 1628 1629 kmem_free(path, pathlen); 1630 } 1631 } 1632 1633 static void 1634 rfs4_client_destroy(rfs4_entry_t u_entry) 1635 { 1636 rfs4_client_t *cp = (rfs4_client_t *)u_entry; 1637 1638 mutex_destroy(cp->rc_cbinfo.cb_lock); 1639 cv_destroy(cp->rc_cbinfo.cb_cv); 1640 cv_destroy(cp->rc_cbinfo.cb_cv_nullcaller); 1641 list_destroy(&cp->rc_openownerlist); 1642 1643 /* free callback info */ 1644 rfs4_cbinfo_free(&cp->rc_cbinfo); 1645 1646 if (cp->rc_cp_confirmed) 1647 rfs4_client_rele(cp->rc_cp_confirmed); 1648 1649 if (cp->rc_ss_pn) { 1650 /* check if the stable storage files need to be removed */ 1651 if (cp->rc_ss_remove) 1652 rfs4_dss_remove_cpleaf(cp); 1653 rfs4_ss_pnfree(cp->rc_ss_pn); 1654 } 1655 1656 /* Free the client supplied client id */ 1657 kmem_free(cp->rc_nfs_client.id_val, cp->rc_nfs_client.id_len); 1658 1659 if (cp->rc_sysidt != LM_NOSYSID) 1660 lm_free_sysidt(cp->rc_sysidt); 1661 } 1662 1663 static bool_t 1664 rfs4_client_create(rfs4_entry_t u_entry, void *arg) 1665 { 1666 rfs4_client_t *cp = (rfs4_client_t *)u_entry; 1667 nfs_client_id4 *client = (nfs_client_id4 *)arg; 1668 struct sockaddr *ca; 1669 cid *cidp; 1670 scid_confirm_verf *scvp; 1671 1672 /* Get a clientid to give to the client */ 1673 cidp = (cid *)&cp->rc_clientid; 1674 cidp->impl_id.start_time = rfs4_start_time; 1675 cidp->impl_id.c_id = (uint32_t)rfs4_dbe_getid(cp->rc_dbe); 1676 1677 /* If we are booted as a cluster node, embed our nodeid */ 1678 if (cluster_bootflags & CLUSTER_BOOTED) 1679 embed_nodeid(cidp); 1680 1681 /* Allocate and copy client's client id value */ 1682 cp->rc_nfs_client.id_val = kmem_alloc(client->id_len, KM_SLEEP); 1683 cp->rc_nfs_client.id_len = client->id_len; 1684 bcopy(client->id_val, cp->rc_nfs_client.id_val, client->id_len); 1685 cp->rc_nfs_client.verifier = client->verifier; 1686 1687 /* Copy client's IP address */ 1688 ca = client->cl_addr; 1689 if (ca->sa_family == AF_INET) 1690 bcopy(ca, &cp->rc_addr, sizeof (struct sockaddr_in)); 1691 else if (ca->sa_family == AF_INET6) 1692 bcopy(ca, &cp->rc_addr, sizeof (struct sockaddr_in6)); 1693 cp->rc_nfs_client.cl_addr = (struct sockaddr *)&cp->rc_addr; 1694 1695 /* Init the value for the SETCLIENTID_CONFIRM verifier */ 1696 scvp = (scid_confirm_verf *)&cp->rc_confirm_verf; 1697 scvp->cv_impl.c_id = cidp->impl_id.c_id; 1698 scvp->cv_impl.gen_num = 0; 1699 1700 /* An F_UNLKSYS has been done for this client */ 1701 cp->rc_unlksys_completed = FALSE; 1702 1703 /* We need the client to ack us */ 1704 cp->rc_need_confirm = TRUE; 1705 cp->rc_cp_confirmed = NULL; 1706 1707 /* TRUE all the time until the callback path actually fails */ 1708 cp->rc_cbinfo.cb_notified_of_cb_path_down = TRUE; 1709 1710 /* Initialize the access time to now */ 1711 cp->rc_last_access = gethrestime_sec(); 1712 1713 cp->rc_cr_set = NULL; 1714 1715 cp->rc_sysidt = LM_NOSYSID; 1716 1717 list_create(&cp->rc_openownerlist, sizeof (rfs4_openowner_t), 1718 offsetof(rfs4_openowner_t, ro_node)); 1719 1720 /* set up the callback control structure */ 1721 cp->rc_cbinfo.cb_state = CB_UNINIT; 1722 mutex_init(cp->rc_cbinfo.cb_lock, NULL, MUTEX_DEFAULT, NULL); 1723 cv_init(cp->rc_cbinfo.cb_cv, NULL, CV_DEFAULT, NULL); 1724 cv_init(cp->rc_cbinfo.cb_cv_nullcaller, NULL, CV_DEFAULT, NULL); 1725 1726 /* 1727 * Associate the client_t with the current server instance. 1728 * The hold is solely to satisfy the calling requirement of 1729 * rfs4_servinst_assign(). In this case it's not strictly necessary. 1730 */ 1731 rfs4_dbe_hold(cp->rc_dbe); 1732 rfs4_servinst_assign(cp, rfs4_cur_servinst); 1733 rfs4_dbe_rele(cp->rc_dbe); 1734 1735 return (TRUE); 1736 } 1737 1738 /* 1739 * Caller wants to generate/update the setclientid_confirm verifier 1740 * associated with a client. This is done during the SETCLIENTID 1741 * processing. 1742 */ 1743 void 1744 rfs4_client_scv_next(rfs4_client_t *cp) 1745 { 1746 scid_confirm_verf *scvp; 1747 1748 /* Init the value for the SETCLIENTID_CONFIRM verifier */ 1749 scvp = (scid_confirm_verf *)&cp->rc_confirm_verf; 1750 scvp->cv_impl.gen_num++; 1751 } 1752 1753 void 1754 rfs4_client_rele(rfs4_client_t *cp) 1755 { 1756 rfs4_dbe_rele(cp->rc_dbe); 1757 } 1758 1759 rfs4_client_t * 1760 rfs4_findclient(nfs_client_id4 *client, bool_t *create, rfs4_client_t *oldcp) 1761 { 1762 rfs4_client_t *cp; 1763 1764 1765 if (oldcp) { 1766 rw_enter(&rfs4_findclient_lock, RW_WRITER); 1767 rfs4_dbe_hide(oldcp->rc_dbe); 1768 } else { 1769 rw_enter(&rfs4_findclient_lock, RW_READER); 1770 } 1771 1772 cp = (rfs4_client_t *)rfs4_dbsearch(rfs4_nfsclnt_idx, client, 1773 create, (void *)client, RFS4_DBS_VALID); 1774 1775 if (oldcp) 1776 rfs4_dbe_unhide(oldcp->rc_dbe); 1777 1778 rw_exit(&rfs4_findclient_lock); 1779 1780 return (cp); 1781 } 1782 1783 rfs4_client_t * 1784 rfs4_findclient_by_id(clientid4 clientid, bool_t find_unconfirmed) 1785 { 1786 rfs4_client_t *cp; 1787 bool_t create = FALSE; 1788 cid *cidp = (cid *)&clientid; 1789 1790 /* If we're a cluster and the nodeid isn't right, short-circuit */ 1791 if (cluster_bootflags & CLUSTER_BOOTED && foreign_clientid(cidp)) 1792 return (NULL); 1793 1794 rw_enter(&rfs4_findclient_lock, RW_READER); 1795 1796 cp = (rfs4_client_t *)rfs4_dbsearch(rfs4_clientid_idx, &clientid, 1797 &create, NULL, RFS4_DBS_VALID); 1798 1799 rw_exit(&rfs4_findclient_lock); 1800 1801 if (cp && cp->rc_need_confirm && find_unconfirmed == FALSE) { 1802 rfs4_client_rele(cp); 1803 return (NULL); 1804 } else { 1805 return (cp); 1806 } 1807 } 1808 1809 static uint32_t 1810 clntip_hash(void *key) 1811 { 1812 struct sockaddr *addr = key; 1813 int i, len = 0; 1814 uint32_t hash = 0; 1815 char *ptr; 1816 1817 if (addr->sa_family == AF_INET) { 1818 struct sockaddr_in *a = (struct sockaddr_in *)addr; 1819 len = sizeof (struct in_addr); 1820 ptr = (char *)&a->sin_addr; 1821 } else if (addr->sa_family == AF_INET6) { 1822 struct sockaddr_in6 *a = (struct sockaddr_in6 *)addr; 1823 len = sizeof (struct in6_addr); 1824 ptr = (char *)&a->sin6_addr; 1825 } else 1826 return (0); 1827 1828 for (i = 0; i < len; i++) { 1829 hash <<= 1; 1830 hash += (uint_t)ptr[i]; 1831 } 1832 return (hash); 1833 } 1834 1835 static bool_t 1836 clntip_compare(rfs4_entry_t entry, void *key) 1837 { 1838 rfs4_clntip_t *cp = (rfs4_clntip_t *)entry; 1839 struct sockaddr *addr = key; 1840 int len = 0; 1841 char *p1, *p2; 1842 1843 if (addr->sa_family == AF_INET) { 1844 struct sockaddr_in *a1 = (struct sockaddr_in *)&cp->ri_addr; 1845 struct sockaddr_in *a2 = (struct sockaddr_in *)addr; 1846 len = sizeof (struct in_addr); 1847 p1 = (char *)&a1->sin_addr; 1848 p2 = (char *)&a2->sin_addr; 1849 } else if (addr->sa_family == AF_INET6) { 1850 struct sockaddr_in6 *a1 = (struct sockaddr_in6 *)&cp->ri_addr; 1851 struct sockaddr_in6 *a2 = (struct sockaddr_in6 *)addr; 1852 len = sizeof (struct in6_addr); 1853 p1 = (char *)&a1->sin6_addr; 1854 p2 = (char *)&a2->sin6_addr; 1855 } else 1856 return (0); 1857 1858 return (bcmp(p1, p2, len) == 0); 1859 } 1860 1861 static void * 1862 clntip_mkkey(rfs4_entry_t entry) 1863 { 1864 rfs4_clntip_t *cp = (rfs4_clntip_t *)entry; 1865 1866 return (&cp->ri_addr); 1867 } 1868 1869 static bool_t 1870 rfs4_clntip_expiry(rfs4_entry_t u_entry) 1871 { 1872 rfs4_clntip_t *cp = (rfs4_clntip_t *)u_entry; 1873 1874 if (rfs4_dbe_is_invalid(cp->ri_dbe)) 1875 return (TRUE); 1876 return (FALSE); 1877 } 1878 1879 /* ARGSUSED */ 1880 static void 1881 rfs4_clntip_destroy(rfs4_entry_t u_entry) 1882 { 1883 } 1884 1885 static bool_t 1886 rfs4_clntip_create(rfs4_entry_t u_entry, void *arg) 1887 { 1888 rfs4_clntip_t *cp = (rfs4_clntip_t *)u_entry; 1889 struct sockaddr *ca = (struct sockaddr *)arg; 1890 1891 /* Copy client's IP address */ 1892 if (ca->sa_family == AF_INET) 1893 bcopy(ca, &cp->ri_addr, sizeof (struct sockaddr_in)); 1894 else if (ca->sa_family == AF_INET6) 1895 bcopy(ca, &cp->ri_addr, sizeof (struct sockaddr_in6)); 1896 else 1897 return (FALSE); 1898 cp->ri_no_referrals = 1; 1899 1900 return (TRUE); 1901 } 1902 1903 rfs4_clntip_t * 1904 rfs4_find_clntip(struct sockaddr *addr, bool_t *create) 1905 { 1906 rfs4_clntip_t *cp; 1907 1908 rw_enter(&rfs4_findclient_lock, RW_READER); 1909 1910 cp = (rfs4_clntip_t *)rfs4_dbsearch(rfs4_clntip_idx, addr, 1911 create, addr, RFS4_DBS_VALID); 1912 1913 rw_exit(&rfs4_findclient_lock); 1914 1915 return (cp); 1916 } 1917 1918 void 1919 rfs4_invalidate_clntip(struct sockaddr *addr) 1920 { 1921 rfs4_clntip_t *cp; 1922 bool_t create = FALSE; 1923 1924 rw_enter(&rfs4_findclient_lock, RW_READER); 1925 1926 cp = (rfs4_clntip_t *)rfs4_dbsearch(rfs4_clntip_idx, addr, 1927 &create, NULL, RFS4_DBS_VALID); 1928 if (cp == NULL) { 1929 rw_exit(&rfs4_findclient_lock); 1930 return; 1931 } 1932 rfs4_dbe_invalidate(cp->ri_dbe); 1933 rfs4_dbe_rele(cp->ri_dbe); 1934 1935 rw_exit(&rfs4_findclient_lock); 1936 } 1937 1938 bool_t 1939 rfs4_lease_expired(rfs4_client_t *cp) 1940 { 1941 bool_t rc; 1942 1943 rfs4_dbe_lock(cp->rc_dbe); 1944 1945 /* 1946 * If the admin has executed clear_locks for this 1947 * client id, force expire will be set, so no need 1948 * to calculate anything because it's "outa here". 1949 */ 1950 if (cp->rc_forced_expire) { 1951 rc = TRUE; 1952 } else { 1953 rc = (gethrestime_sec() - cp->rc_last_access > rfs4_lease_time); 1954 } 1955 1956 /* 1957 * If the lease has expired we will also want 1958 * to remove any stable storage state data. So 1959 * mark the client id accordingly. 1960 */ 1961 if (!cp->rc_ss_remove) 1962 cp->rc_ss_remove = (rc == TRUE); 1963 1964 rfs4_dbe_unlock(cp->rc_dbe); 1965 1966 return (rc); 1967 } 1968 1969 void 1970 rfs4_update_lease(rfs4_client_t *cp) 1971 { 1972 rfs4_dbe_lock(cp->rc_dbe); 1973 if (!cp->rc_forced_expire) 1974 cp->rc_last_access = gethrestime_sec(); 1975 rfs4_dbe_unlock(cp->rc_dbe); 1976 } 1977 1978 1979 static bool_t 1980 EQOPENOWNER(open_owner4 *a, open_owner4 *b) 1981 { 1982 bool_t rc; 1983 1984 if (a->clientid != b->clientid) 1985 return (FALSE); 1986 1987 if (a->owner_len != b->owner_len) 1988 return (FALSE); 1989 1990 rc = (bcmp(a->owner_val, b->owner_val, a->owner_len) == 0); 1991 1992 return (rc); 1993 } 1994 1995 static uint_t 1996 openowner_hash(void *key) 1997 { 1998 int i; 1999 open_owner4 *openowner = key; 2000 uint_t hash = 0; 2001 2002 for (i = 0; i < openowner->owner_len; i++) { 2003 hash <<= 4; 2004 hash += (uint_t)openowner->owner_val[i]; 2005 } 2006 hash += (uint_t)openowner->clientid; 2007 hash |= (openowner->clientid >> 32); 2008 2009 return (hash); 2010 } 2011 2012 static bool_t 2013 openowner_compare(rfs4_entry_t u_entry, void *key) 2014 { 2015 rfs4_openowner_t *oo = (rfs4_openowner_t *)u_entry; 2016 open_owner4 *arg = key; 2017 2018 return (EQOPENOWNER(&oo->ro_owner, arg)); 2019 } 2020 2021 void * 2022 openowner_mkkey(rfs4_entry_t u_entry) 2023 { 2024 rfs4_openowner_t *oo = (rfs4_openowner_t *)u_entry; 2025 2026 return (&oo->ro_owner); 2027 } 2028 2029 static bool_t 2030 rfs4_openowner_expiry(rfs4_entry_t u_entry) 2031 { 2032 rfs4_openowner_t *oo = (rfs4_openowner_t *)u_entry; 2033 2034 if (rfs4_dbe_is_invalid(oo->ro_dbe)) 2035 return (TRUE); 2036 return ((gethrestime_sec() - oo->ro_client->rc_last_access 2037 > rfs4_lease_time)); 2038 } 2039 2040 static void 2041 rfs4_openowner_destroy(rfs4_entry_t u_entry) 2042 { 2043 rfs4_openowner_t *oo = (rfs4_openowner_t *)u_entry; 2044 2045 /* Remove open owner from client's lists of open owners */ 2046 rfs4_dbe_lock(oo->ro_client->rc_dbe); 2047 list_remove(&oo->ro_client->rc_openownerlist, oo); 2048 rfs4_dbe_unlock(oo->ro_client->rc_dbe); 2049 2050 /* One less reference to the client */ 2051 rfs4_client_rele(oo->ro_client); 2052 oo->ro_client = NULL; 2053 2054 /* Free the last reply for this lock owner */ 2055 rfs4_free_reply(&oo->ro_reply); 2056 2057 if (oo->ro_reply_fh.nfs_fh4_val) { 2058 kmem_free(oo->ro_reply_fh.nfs_fh4_val, 2059 oo->ro_reply_fh.nfs_fh4_len); 2060 oo->ro_reply_fh.nfs_fh4_val = NULL; 2061 oo->ro_reply_fh.nfs_fh4_len = 0; 2062 } 2063 2064 rfs4_sw_destroy(&oo->ro_sw); 2065 list_destroy(&oo->ro_statelist); 2066 2067 /* Free the lock owner id */ 2068 kmem_free(oo->ro_owner.owner_val, oo->ro_owner.owner_len); 2069 } 2070 2071 void 2072 rfs4_openowner_rele(rfs4_openowner_t *oo) 2073 { 2074 rfs4_dbe_rele(oo->ro_dbe); 2075 } 2076 2077 static bool_t 2078 rfs4_openowner_create(rfs4_entry_t u_entry, void *arg) 2079 { 2080 rfs4_openowner_t *oo = (rfs4_openowner_t *)u_entry; 2081 rfs4_openowner_t *argp = (rfs4_openowner_t *)arg; 2082 open_owner4 *openowner = &argp->ro_owner; 2083 seqid4 seqid = argp->ro_open_seqid; 2084 rfs4_client_t *cp; 2085 bool_t create = FALSE; 2086 2087 rw_enter(&rfs4_findclient_lock, RW_READER); 2088 2089 cp = (rfs4_client_t *)rfs4_dbsearch(rfs4_clientid_idx, 2090 &openowner->clientid, 2091 &create, NULL, RFS4_DBS_VALID); 2092 2093 rw_exit(&rfs4_findclient_lock); 2094 2095 if (cp == NULL) 2096 return (FALSE); 2097 2098 oo->ro_reply_fh.nfs_fh4_len = 0; 2099 oo->ro_reply_fh.nfs_fh4_val = NULL; 2100 2101 oo->ro_owner.clientid = openowner->clientid; 2102 oo->ro_owner.owner_val = 2103 kmem_alloc(openowner->owner_len, KM_SLEEP); 2104 2105 bcopy(openowner->owner_val, 2106 oo->ro_owner.owner_val, openowner->owner_len); 2107 2108 oo->ro_owner.owner_len = openowner->owner_len; 2109 2110 oo->ro_need_confirm = TRUE; 2111 2112 rfs4_sw_init(&oo->ro_sw); 2113 2114 oo->ro_open_seqid = seqid; 2115 bzero(&oo->ro_reply, sizeof (nfs_resop4)); 2116 oo->ro_client = cp; 2117 oo->ro_cr_set = NULL; 2118 2119 list_create(&oo->ro_statelist, sizeof (rfs4_state_t), 2120 offsetof(rfs4_state_t, rs_node)); 2121 2122 /* Insert openowner into client's open owner list */ 2123 rfs4_dbe_lock(cp->rc_dbe); 2124 list_insert_tail(&cp->rc_openownerlist, oo); 2125 rfs4_dbe_unlock(cp->rc_dbe); 2126 2127 return (TRUE); 2128 } 2129 2130 rfs4_openowner_t * 2131 rfs4_findopenowner(open_owner4 *openowner, bool_t *create, seqid4 seqid) 2132 { 2133 rfs4_openowner_t *oo; 2134 rfs4_openowner_t arg; 2135 2136 arg.ro_owner = *openowner; 2137 arg.ro_open_seqid = seqid; 2138 oo = (rfs4_openowner_t *)rfs4_dbsearch(rfs4_openowner_idx, openowner, 2139 create, &arg, RFS4_DBS_VALID); 2140 2141 return (oo); 2142 } 2143 2144 void 2145 rfs4_update_open_sequence(rfs4_openowner_t *oo) 2146 { 2147 2148 rfs4_dbe_lock(oo->ro_dbe); 2149 2150 oo->ro_open_seqid++; 2151 2152 rfs4_dbe_unlock(oo->ro_dbe); 2153 } 2154 2155 void 2156 rfs4_update_open_resp(rfs4_openowner_t *oo, nfs_resop4 *resp, nfs_fh4 *fh) 2157 { 2158 2159 rfs4_dbe_lock(oo->ro_dbe); 2160 2161 rfs4_free_reply(&oo->ro_reply); 2162 2163 rfs4_copy_reply(&oo->ro_reply, resp); 2164 2165 /* Save the filehandle if provided and free if not used */ 2166 if (resp->nfs_resop4_u.opopen.status == NFS4_OK && 2167 fh && fh->nfs_fh4_len) { 2168 if (oo->ro_reply_fh.nfs_fh4_val == NULL) 2169 oo->ro_reply_fh.nfs_fh4_val = 2170 kmem_alloc(fh->nfs_fh4_len, KM_SLEEP); 2171 nfs_fh4_copy(fh, &oo->ro_reply_fh); 2172 } else { 2173 if (oo->ro_reply_fh.nfs_fh4_val) { 2174 kmem_free(oo->ro_reply_fh.nfs_fh4_val, 2175 oo->ro_reply_fh.nfs_fh4_len); 2176 oo->ro_reply_fh.nfs_fh4_val = NULL; 2177 oo->ro_reply_fh.nfs_fh4_len = 0; 2178 } 2179 } 2180 2181 rfs4_dbe_unlock(oo->ro_dbe); 2182 } 2183 2184 static bool_t 2185 lockowner_compare(rfs4_entry_t u_entry, void *key) 2186 { 2187 rfs4_lockowner_t *lo = (rfs4_lockowner_t *)u_entry; 2188 lock_owner4 *b = (lock_owner4 *)key; 2189 2190 if (lo->rl_owner.clientid != b->clientid) 2191 return (FALSE); 2192 2193 if (lo->rl_owner.owner_len != b->owner_len) 2194 return (FALSE); 2195 2196 return (bcmp(lo->rl_owner.owner_val, b->owner_val, 2197 lo->rl_owner.owner_len) == 0); 2198 } 2199 2200 void * 2201 lockowner_mkkey(rfs4_entry_t u_entry) 2202 { 2203 rfs4_lockowner_t *lo = (rfs4_lockowner_t *)u_entry; 2204 2205 return (&lo->rl_owner); 2206 } 2207 2208 static uint32_t 2209 lockowner_hash(void *key) 2210 { 2211 int i; 2212 lock_owner4 *lockowner = key; 2213 uint_t hash = 0; 2214 2215 for (i = 0; i < lockowner->owner_len; i++) { 2216 hash <<= 4; 2217 hash += (uint_t)lockowner->owner_val[i]; 2218 } 2219 hash += (uint_t)lockowner->clientid; 2220 hash |= (lockowner->clientid >> 32); 2221 2222 return (hash); 2223 } 2224 2225 static uint32_t 2226 pid_hash(void *key) 2227 { 2228 return ((uint32_t)(uintptr_t)key); 2229 } 2230 2231 static void * 2232 pid_mkkey(rfs4_entry_t u_entry) 2233 { 2234 rfs4_lockowner_t *lo = (rfs4_lockowner_t *)u_entry; 2235 2236 return ((void *)(uintptr_t)lo->rl_pid); 2237 } 2238 2239 static bool_t 2240 pid_compare(rfs4_entry_t u_entry, void *key) 2241 { 2242 rfs4_lockowner_t *lo = (rfs4_lockowner_t *)u_entry; 2243 2244 return (lo->rl_pid == (pid_t)(uintptr_t)key); 2245 } 2246 2247 static void 2248 rfs4_lockowner_destroy(rfs4_entry_t u_entry) 2249 { 2250 rfs4_lockowner_t *lo = (rfs4_lockowner_t *)u_entry; 2251 2252 /* Free the lock owner id */ 2253 kmem_free(lo->rl_owner.owner_val, lo->rl_owner.owner_len); 2254 rfs4_client_rele(lo->rl_client); 2255 } 2256 2257 void 2258 rfs4_lockowner_rele(rfs4_lockowner_t *lo) 2259 { 2260 rfs4_dbe_rele(lo->rl_dbe); 2261 } 2262 2263 /* ARGSUSED */ 2264 static bool_t 2265 rfs4_lockowner_expiry(rfs4_entry_t u_entry) 2266 { 2267 /* 2268 * Since expiry is called with no other references on 2269 * this struct, go ahead and have it removed. 2270 */ 2271 return (TRUE); 2272 } 2273 2274 static bool_t 2275 rfs4_lockowner_create(rfs4_entry_t u_entry, void *arg) 2276 { 2277 rfs4_lockowner_t *lo = (rfs4_lockowner_t *)u_entry; 2278 lock_owner4 *lockowner = (lock_owner4 *)arg; 2279 rfs4_client_t *cp; 2280 bool_t create = FALSE; 2281 2282 rw_enter(&rfs4_findclient_lock, RW_READER); 2283 2284 cp = (rfs4_client_t *)rfs4_dbsearch(rfs4_clientid_idx, 2285 &lockowner->clientid, 2286 &create, NULL, RFS4_DBS_VALID); 2287 2288 rw_exit(&rfs4_findclient_lock); 2289 2290 if (cp == NULL) 2291 return (FALSE); 2292 2293 /* Reference client */ 2294 lo->rl_client = cp; 2295 lo->rl_owner.clientid = lockowner->clientid; 2296 lo->rl_owner.owner_val = kmem_alloc(lockowner->owner_len, KM_SLEEP); 2297 bcopy(lockowner->owner_val, lo->rl_owner.owner_val, 2298 lockowner->owner_len); 2299 lo->rl_owner.owner_len = lockowner->owner_len; 2300 lo->rl_pid = rfs4_dbe_getid(lo->rl_dbe); 2301 2302 return (TRUE); 2303 } 2304 2305 rfs4_lockowner_t * 2306 rfs4_findlockowner(lock_owner4 *lockowner, bool_t *create) 2307 { 2308 rfs4_lockowner_t *lo; 2309 2310 lo = (rfs4_lockowner_t *)rfs4_dbsearch(rfs4_lockowner_idx, lockowner, 2311 create, lockowner, RFS4_DBS_VALID); 2312 2313 return (lo); 2314 } 2315 2316 rfs4_lockowner_t * 2317 rfs4_findlockowner_by_pid(pid_t pid) 2318 { 2319 rfs4_lockowner_t *lo; 2320 bool_t create = FALSE; 2321 2322 lo = (rfs4_lockowner_t *)rfs4_dbsearch(rfs4_lockowner_pid_idx, 2323 (void *)(uintptr_t)pid, &create, NULL, RFS4_DBS_VALID); 2324 2325 return (lo); 2326 } 2327 2328 2329 static uint32_t 2330 file_hash(void *key) 2331 { 2332 return (ADDRHASH(key)); 2333 } 2334 2335 static void * 2336 file_mkkey(rfs4_entry_t u_entry) 2337 { 2338 rfs4_file_t *fp = (rfs4_file_t *)u_entry; 2339 2340 return (fp->rf_vp); 2341 } 2342 2343 static bool_t 2344 file_compare(rfs4_entry_t u_entry, void *key) 2345 { 2346 rfs4_file_t *fp = (rfs4_file_t *)u_entry; 2347 2348 return (fp->rf_vp == (vnode_t *)key); 2349 } 2350 2351 static void 2352 rfs4_file_destroy(rfs4_entry_t u_entry) 2353 { 2354 rfs4_file_t *fp = (rfs4_file_t *)u_entry; 2355 2356 list_destroy(&fp->rf_delegstatelist); 2357 2358 if (fp->rf_filehandle.nfs_fh4_val) 2359 kmem_free(fp->rf_filehandle.nfs_fh4_val, 2360 fp->rf_filehandle.nfs_fh4_len); 2361 cv_destroy(fp->rf_dinfo.rd_recall_cv); 2362 if (fp->rf_vp) { 2363 vnode_t *vp = fp->rf_vp; 2364 2365 mutex_enter(&vp->v_vsd_lock); 2366 (void) vsd_set(vp, nfs4_srv_vkey, NULL); 2367 mutex_exit(&vp->v_vsd_lock); 2368 VN_RELE(vp); 2369 fp->rf_vp = NULL; 2370 } 2371 rw_destroy(&fp->rf_file_rwlock); 2372 } 2373 2374 /* 2375 * Used to unlock the underlying dbe struct only 2376 */ 2377 void 2378 rfs4_file_rele(rfs4_file_t *fp) 2379 { 2380 rfs4_dbe_rele(fp->rf_dbe); 2381 } 2382 2383 typedef struct { 2384 vnode_t *vp; 2385 nfs_fh4 *fh; 2386 } rfs4_fcreate_arg; 2387 2388 static bool_t 2389 rfs4_file_create(rfs4_entry_t u_entry, void *arg) 2390 { 2391 rfs4_file_t *fp = (rfs4_file_t *)u_entry; 2392 rfs4_fcreate_arg *ap = (rfs4_fcreate_arg *)arg; 2393 vnode_t *vp = ap->vp; 2394 nfs_fh4 *fh = ap->fh; 2395 2396 VN_HOLD(vp); 2397 2398 fp->rf_filehandle.nfs_fh4_len = 0; 2399 fp->rf_filehandle.nfs_fh4_val = NULL; 2400 ASSERT(fh && fh->nfs_fh4_len); 2401 if (fh && fh->nfs_fh4_len) { 2402 fp->rf_filehandle.nfs_fh4_val = 2403 kmem_alloc(fh->nfs_fh4_len, KM_SLEEP); 2404 nfs_fh4_copy(fh, &fp->rf_filehandle); 2405 } 2406 fp->rf_vp = vp; 2407 2408 list_create(&fp->rf_delegstatelist, sizeof (rfs4_deleg_state_t), 2409 offsetof(rfs4_deleg_state_t, rds_node)); 2410 2411 fp->rf_share_deny = fp->rf_share_access = fp->rf_access_read = 0; 2412 fp->rf_access_write = fp->rf_deny_read = fp->rf_deny_write = 0; 2413 2414 mutex_init(fp->rf_dinfo.rd_recall_lock, NULL, MUTEX_DEFAULT, NULL); 2415 cv_init(fp->rf_dinfo.rd_recall_cv, NULL, CV_DEFAULT, NULL); 2416 2417 fp->rf_dinfo.rd_dtype = OPEN_DELEGATE_NONE; 2418 2419 rw_init(&fp->rf_file_rwlock, NULL, RW_DEFAULT, NULL); 2420 2421 mutex_enter(&vp->v_vsd_lock); 2422 VERIFY(vsd_set(vp, nfs4_srv_vkey, (void *)fp) == 0); 2423 mutex_exit(&vp->v_vsd_lock); 2424 2425 return (TRUE); 2426 } 2427 2428 rfs4_file_t * 2429 rfs4_findfile(vnode_t *vp, nfs_fh4 *fh, bool_t *create) 2430 { 2431 rfs4_file_t *fp; 2432 rfs4_fcreate_arg arg; 2433 2434 arg.vp = vp; 2435 arg.fh = fh; 2436 2437 if (*create == TRUE) 2438 fp = (rfs4_file_t *)rfs4_dbsearch(rfs4_file_idx, vp, create, 2439 &arg, RFS4_DBS_VALID); 2440 else { 2441 mutex_enter(&vp->v_vsd_lock); 2442 fp = (rfs4_file_t *)vsd_get(vp, nfs4_srv_vkey); 2443 if (fp) { 2444 rfs4_dbe_lock(fp->rf_dbe); 2445 if (rfs4_dbe_is_invalid(fp->rf_dbe) || 2446 (rfs4_dbe_refcnt(fp->rf_dbe) == 0)) { 2447 rfs4_dbe_unlock(fp->rf_dbe); 2448 fp = NULL; 2449 } else { 2450 rfs4_dbe_hold(fp->rf_dbe); 2451 rfs4_dbe_unlock(fp->rf_dbe); 2452 } 2453 } 2454 mutex_exit(&vp->v_vsd_lock); 2455 } 2456 return (fp); 2457 } 2458 2459 /* 2460 * Find a file in the db and once it is located, take the rw lock. 2461 * Need to check the vnode pointer and if it does not exist (it was 2462 * removed between the db location and check) redo the find. This 2463 * assumes that a file struct that has a NULL vnode pointer is marked 2464 * at 'invalid' and will not be found in the db the second time 2465 * around. 2466 */ 2467 rfs4_file_t * 2468 rfs4_findfile_withlock(vnode_t *vp, nfs_fh4 *fh, bool_t *create) 2469 { 2470 rfs4_file_t *fp; 2471 rfs4_fcreate_arg arg; 2472 bool_t screate = *create; 2473 2474 if (screate == FALSE) { 2475 mutex_enter(&vp->v_vsd_lock); 2476 fp = (rfs4_file_t *)vsd_get(vp, nfs4_srv_vkey); 2477 if (fp) { 2478 rfs4_dbe_lock(fp->rf_dbe); 2479 if (rfs4_dbe_is_invalid(fp->rf_dbe) || 2480 (rfs4_dbe_refcnt(fp->rf_dbe) == 0)) { 2481 rfs4_dbe_unlock(fp->rf_dbe); 2482 mutex_exit(&vp->v_vsd_lock); 2483 fp = NULL; 2484 } else { 2485 rfs4_dbe_hold(fp->rf_dbe); 2486 rfs4_dbe_unlock(fp->rf_dbe); 2487 mutex_exit(&vp->v_vsd_lock); 2488 rw_enter(&fp->rf_file_rwlock, RW_WRITER); 2489 if (fp->rf_vp == NULL) { 2490 rw_exit(&fp->rf_file_rwlock); 2491 rfs4_file_rele(fp); 2492 fp = NULL; 2493 } 2494 } 2495 } else { 2496 mutex_exit(&vp->v_vsd_lock); 2497 } 2498 } else { 2499 retry: 2500 arg.vp = vp; 2501 arg.fh = fh; 2502 2503 fp = (rfs4_file_t *)rfs4_dbsearch(rfs4_file_idx, vp, create, 2504 &arg, RFS4_DBS_VALID); 2505 if (fp != NULL) { 2506 rw_enter(&fp->rf_file_rwlock, RW_WRITER); 2507 if (fp->rf_vp == NULL) { 2508 rw_exit(&fp->rf_file_rwlock); 2509 rfs4_file_rele(fp); 2510 *create = screate; 2511 goto retry; 2512 } 2513 } 2514 } 2515 2516 return (fp); 2517 } 2518 2519 static uint32_t 2520 lo_state_hash(void *key) 2521 { 2522 stateid_t *id = key; 2523 2524 return (id->bits.ident+id->bits.pid); 2525 } 2526 2527 static bool_t 2528 lo_state_compare(rfs4_entry_t u_entry, void *key) 2529 { 2530 rfs4_lo_state_t *lsp = (rfs4_lo_state_t *)u_entry; 2531 stateid_t *id = key; 2532 bool_t rc; 2533 2534 rc = (lsp->rls_lockid.bits.boottime == id->bits.boottime && 2535 lsp->rls_lockid.bits.type == id->bits.type && 2536 lsp->rls_lockid.bits.ident == id->bits.ident && 2537 lsp->rls_lockid.bits.pid == id->bits.pid); 2538 2539 return (rc); 2540 } 2541 2542 static void * 2543 lo_state_mkkey(rfs4_entry_t u_entry) 2544 { 2545 rfs4_lo_state_t *lsp = (rfs4_lo_state_t *)u_entry; 2546 2547 return (&lsp->rls_lockid); 2548 } 2549 2550 static bool_t 2551 rfs4_lo_state_expiry(rfs4_entry_t u_entry) 2552 { 2553 rfs4_lo_state_t *lsp = (rfs4_lo_state_t *)u_entry; 2554 2555 if (rfs4_dbe_is_invalid(lsp->rls_dbe)) 2556 return (TRUE); 2557 if (lsp->rls_state->rs_closed) 2558 return (TRUE); 2559 return ((gethrestime_sec() - 2560 lsp->rls_state->rs_owner->ro_client->rc_last_access 2561 > rfs4_lease_time)); 2562 } 2563 2564 static void 2565 rfs4_lo_state_destroy(rfs4_entry_t u_entry) 2566 { 2567 rfs4_lo_state_t *lsp = (rfs4_lo_state_t *)u_entry; 2568 2569 rfs4_dbe_lock(lsp->rls_state->rs_dbe); 2570 list_remove(&lsp->rls_state->rs_lostatelist, lsp); 2571 rfs4_dbe_unlock(lsp->rls_state->rs_dbe); 2572 2573 rfs4_sw_destroy(&lsp->rls_sw); 2574 2575 /* Make sure to release the file locks */ 2576 if (lsp->rls_locks_cleaned == FALSE) { 2577 lsp->rls_locks_cleaned = TRUE; 2578 if (lsp->rls_locker->rl_client->rc_sysidt != LM_NOSYSID) { 2579 /* Is the PxFS kernel module loaded? */ 2580 if (lm_remove_file_locks != NULL) { 2581 int new_sysid; 2582 2583 /* Encode the cluster nodeid in new sysid */ 2584 new_sysid = 2585 lsp->rls_locker->rl_client->rc_sysidt; 2586 lm_set_nlmid_flk(&new_sysid); 2587 2588 /* 2589 * This PxFS routine removes file locks for a 2590 * client over all nodes of a cluster. 2591 */ 2592 DTRACE_PROBE1(nfss_i_clust_rm_lck, 2593 int, new_sysid); 2594 (*lm_remove_file_locks)(new_sysid); 2595 } else { 2596 (void) cleanlocks( 2597 lsp->rls_state->rs_finfo->rf_vp, 2598 lsp->rls_locker->rl_pid, 2599 lsp->rls_locker->rl_client->rc_sysidt); 2600 } 2601 } 2602 } 2603 2604 /* Free the last reply for this state */ 2605 rfs4_free_reply(&lsp->rls_reply); 2606 2607 rfs4_lockowner_rele(lsp->rls_locker); 2608 lsp->rls_locker = NULL; 2609 2610 rfs4_state_rele_nounlock(lsp->rls_state); 2611 lsp->rls_state = NULL; 2612 } 2613 2614 static bool_t 2615 rfs4_lo_state_create(rfs4_entry_t u_entry, void *arg) 2616 { 2617 rfs4_lo_state_t *lsp = (rfs4_lo_state_t *)u_entry; 2618 rfs4_lo_state_t *argp = (rfs4_lo_state_t *)arg; 2619 rfs4_lockowner_t *lo = argp->rls_locker; 2620 rfs4_state_t *sp = argp->rls_state; 2621 2622 lsp->rls_state = sp; 2623 2624 lsp->rls_lockid = sp->rs_stateid; 2625 lsp->rls_lockid.bits.type = LOCKID; 2626 lsp->rls_lockid.bits.chgseq = 0; 2627 lsp->rls_lockid.bits.pid = lo->rl_pid; 2628 2629 lsp->rls_locks_cleaned = FALSE; 2630 lsp->rls_lock_completed = FALSE; 2631 2632 rfs4_sw_init(&lsp->rls_sw); 2633 2634 /* Attached the supplied lock owner */ 2635 rfs4_dbe_hold(lo->rl_dbe); 2636 lsp->rls_locker = lo; 2637 2638 rfs4_dbe_lock(sp->rs_dbe); 2639 list_insert_tail(&sp->rs_lostatelist, lsp); 2640 rfs4_dbe_hold(sp->rs_dbe); 2641 rfs4_dbe_unlock(sp->rs_dbe); 2642 2643 return (TRUE); 2644 } 2645 2646 void 2647 rfs4_lo_state_rele(rfs4_lo_state_t *lsp, bool_t unlock_fp) 2648 { 2649 if (unlock_fp == TRUE) 2650 rw_exit(&lsp->rls_state->rs_finfo->rf_file_rwlock); 2651 rfs4_dbe_rele(lsp->rls_dbe); 2652 } 2653 2654 static rfs4_lo_state_t * 2655 rfs4_findlo_state(stateid_t *id, bool_t lock_fp) 2656 { 2657 rfs4_lo_state_t *lsp; 2658 bool_t create = FALSE; 2659 2660 lsp = (rfs4_lo_state_t *)rfs4_dbsearch(rfs4_lo_state_idx, id, 2661 &create, NULL, RFS4_DBS_VALID); 2662 if (lock_fp == TRUE && lsp != NULL) 2663 rw_enter(&lsp->rls_state->rs_finfo->rf_file_rwlock, RW_READER); 2664 2665 return (lsp); 2666 } 2667 2668 2669 static uint32_t 2670 lo_state_lo_hash(void *key) 2671 { 2672 rfs4_lo_state_t *lsp = key; 2673 2674 return (ADDRHASH(lsp->rls_locker) ^ ADDRHASH(lsp->rls_state)); 2675 } 2676 2677 static bool_t 2678 lo_state_lo_compare(rfs4_entry_t u_entry, void *key) 2679 { 2680 rfs4_lo_state_t *lsp = (rfs4_lo_state_t *)u_entry; 2681 rfs4_lo_state_t *keyp = key; 2682 2683 return (keyp->rls_locker == lsp->rls_locker && 2684 keyp->rls_state == lsp->rls_state); 2685 } 2686 2687 static void * 2688 lo_state_lo_mkkey(rfs4_entry_t u_entry) 2689 { 2690 return (u_entry); 2691 } 2692 2693 rfs4_lo_state_t * 2694 rfs4_findlo_state_by_owner(rfs4_lockowner_t *lo, rfs4_state_t *sp, 2695 bool_t *create) 2696 { 2697 rfs4_lo_state_t *lsp; 2698 rfs4_lo_state_t arg; 2699 2700 arg.rls_locker = lo; 2701 arg.rls_state = sp; 2702 2703 lsp = (rfs4_lo_state_t *)rfs4_dbsearch(rfs4_lo_state_owner_idx, &arg, 2704 create, &arg, RFS4_DBS_VALID); 2705 2706 return (lsp); 2707 } 2708 2709 static stateid_t 2710 get_stateid(id_t eid) 2711 { 2712 stateid_t id; 2713 2714 id.bits.boottime = rfs4_start_time; 2715 id.bits.ident = eid; 2716 id.bits.chgseq = 0; 2717 id.bits.type = 0; 2718 id.bits.pid = 0; 2719 2720 /* 2721 * If we are booted as a cluster node, embed our nodeid. 2722 * We've already done sanity checks in rfs4_client_create() so no 2723 * need to repeat them here. 2724 */ 2725 id.bits.clnodeid = (cluster_bootflags & CLUSTER_BOOTED) ? 2726 clconf_get_nodeid() : 0; 2727 2728 return (id); 2729 } 2730 2731 /* 2732 * For use only when booted as a cluster node. 2733 * Returns TRUE if the embedded nodeid indicates that this stateid was 2734 * generated on another node. 2735 */ 2736 static int 2737 foreign_stateid(stateid_t *id) 2738 { 2739 ASSERT(cluster_bootflags & CLUSTER_BOOTED); 2740 return (id->bits.clnodeid != (uint32_t)clconf_get_nodeid()); 2741 } 2742 2743 /* 2744 * For use only when booted as a cluster node. 2745 * Returns TRUE if the embedded nodeid indicates that this clientid was 2746 * generated on another node. 2747 */ 2748 static int 2749 foreign_clientid(cid *cidp) 2750 { 2751 ASSERT(cluster_bootflags & CLUSTER_BOOTED); 2752 return (cidp->impl_id.c_id >> CLUSTER_NODEID_SHIFT != 2753 (uint32_t)clconf_get_nodeid()); 2754 } 2755 2756 /* 2757 * For use only when booted as a cluster node. 2758 * Embed our cluster nodeid into the clientid. 2759 */ 2760 static void 2761 embed_nodeid(cid *cidp) 2762 { 2763 int clnodeid; 2764 /* 2765 * Currently, our state tables are small enough that their 2766 * ids will leave enough bits free for the nodeid. If the 2767 * tables become larger, we mustn't overwrite the id. 2768 * Equally, we only have room for so many bits of nodeid, so 2769 * must check that too. 2770 */ 2771 ASSERT(cluster_bootflags & CLUSTER_BOOTED); 2772 ASSERT(cidp->impl_id.c_id >> CLUSTER_NODEID_SHIFT == 0); 2773 clnodeid = clconf_get_nodeid(); 2774 ASSERT(clnodeid <= CLUSTER_MAX_NODEID); 2775 ASSERT(clnodeid != NODEID_UNKNOWN); 2776 cidp->impl_id.c_id |= (clnodeid << CLUSTER_NODEID_SHIFT); 2777 } 2778 2779 static uint32_t 2780 state_hash(void *key) 2781 { 2782 stateid_t *ip = (stateid_t *)key; 2783 2784 return (ip->bits.ident); 2785 } 2786 2787 static bool_t 2788 state_compare(rfs4_entry_t u_entry, void *key) 2789 { 2790 rfs4_state_t *sp = (rfs4_state_t *)u_entry; 2791 stateid_t *id = (stateid_t *)key; 2792 bool_t rc; 2793 2794 rc = (sp->rs_stateid.bits.boottime == id->bits.boottime && 2795 sp->rs_stateid.bits.ident == id->bits.ident); 2796 2797 return (rc); 2798 } 2799 2800 static void * 2801 state_mkkey(rfs4_entry_t u_entry) 2802 { 2803 rfs4_state_t *sp = (rfs4_state_t *)u_entry; 2804 2805 return (&sp->rs_stateid); 2806 } 2807 2808 static void 2809 rfs4_state_destroy(rfs4_entry_t u_entry) 2810 { 2811 rfs4_state_t *sp = (rfs4_state_t *)u_entry; 2812 2813 /* remove from openowner list */ 2814 rfs4_dbe_lock(sp->rs_owner->ro_dbe); 2815 list_remove(&sp->rs_owner->ro_statelist, sp); 2816 rfs4_dbe_unlock(sp->rs_owner->ro_dbe); 2817 2818 list_destroy(&sp->rs_lostatelist); 2819 2820 /* release any share locks for this stateid if it's still open */ 2821 if (!sp->rs_closed) { 2822 rfs4_dbe_lock(sp->rs_dbe); 2823 (void) rfs4_unshare(sp); 2824 rfs4_dbe_unlock(sp->rs_dbe); 2825 } 2826 2827 /* Were done with the file */ 2828 rfs4_file_rele(sp->rs_finfo); 2829 sp->rs_finfo = NULL; 2830 2831 /* And now with the openowner */ 2832 rfs4_openowner_rele(sp->rs_owner); 2833 sp->rs_owner = NULL; 2834 } 2835 2836 static void 2837 rfs4_state_rele_nounlock(rfs4_state_t *sp) 2838 { 2839 rfs4_dbe_rele(sp->rs_dbe); 2840 } 2841 2842 void 2843 rfs4_state_rele(rfs4_state_t *sp) 2844 { 2845 rw_exit(&sp->rs_finfo->rf_file_rwlock); 2846 rfs4_dbe_rele(sp->rs_dbe); 2847 } 2848 2849 static uint32_t 2850 deleg_hash(void *key) 2851 { 2852 rfs4_deleg_state_t *dsp = (rfs4_deleg_state_t *)key; 2853 2854 return (ADDRHASH(dsp->rds_client) ^ ADDRHASH(dsp->rds_finfo)); 2855 } 2856 2857 static bool_t 2858 deleg_compare(rfs4_entry_t u_entry, void *key) 2859 { 2860 rfs4_deleg_state_t *dsp = (rfs4_deleg_state_t *)u_entry; 2861 rfs4_deleg_state_t *kdsp = (rfs4_deleg_state_t *)key; 2862 2863 return (dsp->rds_client == kdsp->rds_client && 2864 dsp->rds_finfo == kdsp->rds_finfo); 2865 } 2866 2867 static void * 2868 deleg_mkkey(rfs4_entry_t u_entry) 2869 { 2870 return (u_entry); 2871 } 2872 2873 static uint32_t 2874 deleg_state_hash(void *key) 2875 { 2876 stateid_t *ip = (stateid_t *)key; 2877 2878 return (ip->bits.ident); 2879 } 2880 2881 static bool_t 2882 deleg_state_compare(rfs4_entry_t u_entry, void *key) 2883 { 2884 rfs4_deleg_state_t *dsp = (rfs4_deleg_state_t *)u_entry; 2885 stateid_t *id = (stateid_t *)key; 2886 bool_t rc; 2887 2888 if (id->bits.type != DELEGID) 2889 return (FALSE); 2890 2891 rc = (dsp->rds_delegid.bits.boottime == id->bits.boottime && 2892 dsp->rds_delegid.bits.ident == id->bits.ident); 2893 2894 return (rc); 2895 } 2896 2897 static void * 2898 deleg_state_mkkey(rfs4_entry_t u_entry) 2899 { 2900 rfs4_deleg_state_t *dsp = (rfs4_deleg_state_t *)u_entry; 2901 2902 return (&dsp->rds_delegid); 2903 } 2904 2905 static bool_t 2906 rfs4_deleg_state_expiry(rfs4_entry_t u_entry) 2907 { 2908 rfs4_deleg_state_t *dsp = (rfs4_deleg_state_t *)u_entry; 2909 2910 if (rfs4_dbe_is_invalid(dsp->rds_dbe)) 2911 return (TRUE); 2912 2913 if ((gethrestime_sec() - dsp->rds_client->rc_last_access 2914 > rfs4_lease_time)) { 2915 rfs4_dbe_invalidate(dsp->rds_dbe); 2916 return (TRUE); 2917 } 2918 2919 return (FALSE); 2920 } 2921 2922 static bool_t 2923 rfs4_deleg_state_create(rfs4_entry_t u_entry, void *argp) 2924 { 2925 rfs4_deleg_state_t *dsp = (rfs4_deleg_state_t *)u_entry; 2926 rfs4_file_t *fp = ((rfs4_deleg_state_t *)argp)->rds_finfo; 2927 rfs4_client_t *cp = ((rfs4_deleg_state_t *)argp)->rds_client; 2928 2929 rfs4_dbe_hold(fp->rf_dbe); 2930 rfs4_dbe_hold(cp->rc_dbe); 2931 2932 dsp->rds_delegid = get_stateid(rfs4_dbe_getid(dsp->rds_dbe)); 2933 dsp->rds_delegid.bits.type = DELEGID; 2934 dsp->rds_finfo = fp; 2935 dsp->rds_client = cp; 2936 dsp->rds_dtype = OPEN_DELEGATE_NONE; 2937 2938 dsp->rds_time_granted = gethrestime_sec(); /* observability */ 2939 dsp->rds_time_revoked = 0; 2940 2941 list_link_init(&dsp->rds_node); 2942 2943 return (TRUE); 2944 } 2945 2946 static void 2947 rfs4_deleg_state_destroy(rfs4_entry_t u_entry) 2948 { 2949 rfs4_deleg_state_t *dsp = (rfs4_deleg_state_t *)u_entry; 2950 2951 /* return delegation if necessary */ 2952 rfs4_return_deleg(dsp, FALSE); 2953 2954 /* Were done with the file */ 2955 rfs4_file_rele(dsp->rds_finfo); 2956 dsp->rds_finfo = NULL; 2957 2958 /* And now with the openowner */ 2959 rfs4_client_rele(dsp->rds_client); 2960 dsp->rds_client = NULL; 2961 } 2962 2963 rfs4_deleg_state_t * 2964 rfs4_finddeleg(rfs4_state_t *sp, bool_t *create) 2965 { 2966 rfs4_deleg_state_t ds, *dsp; 2967 2968 ds.rds_client = sp->rs_owner->ro_client; 2969 ds.rds_finfo = sp->rs_finfo; 2970 2971 dsp = (rfs4_deleg_state_t *)rfs4_dbsearch(rfs4_deleg_idx, &ds, 2972 create, &ds, RFS4_DBS_VALID); 2973 2974 return (dsp); 2975 } 2976 2977 rfs4_deleg_state_t * 2978 rfs4_finddelegstate(stateid_t *id) 2979 { 2980 rfs4_deleg_state_t *dsp; 2981 bool_t create = FALSE; 2982 2983 dsp = (rfs4_deleg_state_t *)rfs4_dbsearch(rfs4_deleg_state_idx, id, 2984 &create, NULL, RFS4_DBS_VALID); 2985 2986 return (dsp); 2987 } 2988 2989 void 2990 rfs4_deleg_state_rele(rfs4_deleg_state_t *dsp) 2991 { 2992 rfs4_dbe_rele(dsp->rds_dbe); 2993 } 2994 2995 void 2996 rfs4_update_lock_sequence(rfs4_lo_state_t *lsp) 2997 { 2998 2999 rfs4_dbe_lock(lsp->rls_dbe); 3000 3001 /* 3002 * If we are skipping sequence id checking, this means that 3003 * this is the first lock request and therefore the sequence 3004 * id does not need to be updated. This only happens on the 3005 * first lock request for a lockowner 3006 */ 3007 if (!lsp->rls_skip_seqid_check) 3008 lsp->rls_seqid++; 3009 3010 rfs4_dbe_unlock(lsp->rls_dbe); 3011 } 3012 3013 void 3014 rfs4_update_lock_resp(rfs4_lo_state_t *lsp, nfs_resop4 *resp) 3015 { 3016 3017 rfs4_dbe_lock(lsp->rls_dbe); 3018 3019 rfs4_free_reply(&lsp->rls_reply); 3020 3021 rfs4_copy_reply(&lsp->rls_reply, resp); 3022 3023 rfs4_dbe_unlock(lsp->rls_dbe); 3024 } 3025 3026 void 3027 rfs4_free_opens(rfs4_openowner_t *oo, bool_t invalidate, 3028 bool_t close_of_client) 3029 { 3030 rfs4_state_t *sp; 3031 3032 rfs4_dbe_lock(oo->ro_dbe); 3033 3034 for (sp = list_head(&oo->ro_statelist); sp != NULL; 3035 sp = list_next(&oo->ro_statelist, sp)) { 3036 rfs4_state_close(sp, FALSE, close_of_client, CRED()); 3037 if (invalidate == TRUE) 3038 rfs4_dbe_invalidate(sp->rs_dbe); 3039 } 3040 3041 rfs4_dbe_invalidate(oo->ro_dbe); 3042 rfs4_dbe_unlock(oo->ro_dbe); 3043 } 3044 3045 static uint32_t 3046 state_owner_file_hash(void *key) 3047 { 3048 rfs4_state_t *sp = key; 3049 3050 return (ADDRHASH(sp->rs_owner) ^ ADDRHASH(sp->rs_finfo)); 3051 } 3052 3053 static bool_t 3054 state_owner_file_compare(rfs4_entry_t u_entry, void *key) 3055 { 3056 rfs4_state_t *sp = (rfs4_state_t *)u_entry; 3057 rfs4_state_t *arg = key; 3058 3059 if (sp->rs_closed == TRUE) 3060 return (FALSE); 3061 3062 return (arg->rs_owner == sp->rs_owner && arg->rs_finfo == sp->rs_finfo); 3063 } 3064 3065 static void * 3066 state_owner_file_mkkey(rfs4_entry_t u_entry) 3067 { 3068 return (u_entry); 3069 } 3070 3071 static uint32_t 3072 state_file_hash(void *key) 3073 { 3074 return (ADDRHASH(key)); 3075 } 3076 3077 static bool_t 3078 state_file_compare(rfs4_entry_t u_entry, void *key) 3079 { 3080 rfs4_state_t *sp = (rfs4_state_t *)u_entry; 3081 rfs4_file_t *fp = key; 3082 3083 if (sp->rs_closed == TRUE) 3084 return (FALSE); 3085 3086 return (fp == sp->rs_finfo); 3087 } 3088 3089 static void * 3090 state_file_mkkey(rfs4_entry_t u_entry) 3091 { 3092 rfs4_state_t *sp = (rfs4_state_t *)u_entry; 3093 3094 return (sp->rs_finfo); 3095 } 3096 3097 rfs4_state_t * 3098 rfs4_findstate_by_owner_file(rfs4_openowner_t *oo, rfs4_file_t *fp, 3099 bool_t *create) 3100 { 3101 rfs4_state_t *sp; 3102 rfs4_state_t key; 3103 3104 key.rs_owner = oo; 3105 key.rs_finfo = fp; 3106 3107 sp = (rfs4_state_t *)rfs4_dbsearch(rfs4_state_owner_file_idx, &key, 3108 create, &key, RFS4_DBS_VALID); 3109 3110 return (sp); 3111 } 3112 3113 /* This returns ANY state struct that refers to this file */ 3114 static rfs4_state_t * 3115 rfs4_findstate_by_file(rfs4_file_t *fp) 3116 { 3117 bool_t create = FALSE; 3118 3119 return ((rfs4_state_t *)rfs4_dbsearch(rfs4_state_file_idx, fp, 3120 &create, fp, RFS4_DBS_VALID)); 3121 } 3122 3123 static bool_t 3124 rfs4_state_expiry(rfs4_entry_t u_entry) 3125 { 3126 rfs4_state_t *sp = (rfs4_state_t *)u_entry; 3127 3128 if (rfs4_dbe_is_invalid(sp->rs_dbe)) 3129 return (TRUE); 3130 3131 if (sp->rs_closed == TRUE && 3132 ((gethrestime_sec() - rfs4_dbe_get_timerele(sp->rs_dbe)) 3133 > rfs4_lease_time)) 3134 return (TRUE); 3135 3136 return ((gethrestime_sec() - sp->rs_owner->ro_client->rc_last_access 3137 > rfs4_lease_time)); 3138 } 3139 3140 static bool_t 3141 rfs4_state_create(rfs4_entry_t u_entry, void *argp) 3142 { 3143 rfs4_state_t *sp = (rfs4_state_t *)u_entry; 3144 rfs4_file_t *fp = ((rfs4_state_t *)argp)->rs_finfo; 3145 rfs4_openowner_t *oo = ((rfs4_state_t *)argp)->rs_owner; 3146 3147 rfs4_dbe_hold(fp->rf_dbe); 3148 rfs4_dbe_hold(oo->ro_dbe); 3149 sp->rs_stateid = get_stateid(rfs4_dbe_getid(sp->rs_dbe)); 3150 sp->rs_stateid.bits.type = OPENID; 3151 sp->rs_owner = oo; 3152 sp->rs_finfo = fp; 3153 3154 list_create(&sp->rs_lostatelist, sizeof (rfs4_lo_state_t), 3155 offsetof(rfs4_lo_state_t, rls_node)); 3156 3157 /* Insert state on per open owner's list */ 3158 rfs4_dbe_lock(oo->ro_dbe); 3159 list_insert_tail(&oo->ro_statelist, sp); 3160 rfs4_dbe_unlock(oo->ro_dbe); 3161 3162 return (TRUE); 3163 } 3164 3165 static rfs4_state_t * 3166 rfs4_findstate(stateid_t *id, rfs4_dbsearch_type_t find_invalid, bool_t lock_fp) 3167 { 3168 rfs4_state_t *sp; 3169 bool_t create = FALSE; 3170 3171 sp = (rfs4_state_t *)rfs4_dbsearch(rfs4_state_idx, id, 3172 &create, NULL, find_invalid); 3173 if (lock_fp == TRUE && sp != NULL) 3174 rw_enter(&sp->rs_finfo->rf_file_rwlock, RW_READER); 3175 3176 return (sp); 3177 } 3178 3179 void 3180 rfs4_state_close(rfs4_state_t *sp, bool_t lock_held, bool_t close_of_client, 3181 cred_t *cr) 3182 { 3183 /* Remove the associated lo_state owners */ 3184 if (!lock_held) 3185 rfs4_dbe_lock(sp->rs_dbe); 3186 3187 /* 3188 * If refcnt == 0, the dbe is about to be destroyed. 3189 * lock state will be released by the reaper thread. 3190 */ 3191 3192 if (rfs4_dbe_refcnt(sp->rs_dbe) > 0) { 3193 if (sp->rs_closed == FALSE) { 3194 rfs4_release_share_lock_state(sp, cr, close_of_client); 3195 sp->rs_closed = TRUE; 3196 } 3197 } 3198 3199 if (!lock_held) 3200 rfs4_dbe_unlock(sp->rs_dbe); 3201 } 3202 3203 /* 3204 * Remove all state associated with the given client. 3205 */ 3206 void 3207 rfs4_client_state_remove(rfs4_client_t *cp) 3208 { 3209 rfs4_openowner_t *oo; 3210 3211 rfs4_dbe_lock(cp->rc_dbe); 3212 3213 for (oo = list_head(&cp->rc_openownerlist); oo != NULL; 3214 oo = list_next(&cp->rc_openownerlist, oo)) { 3215 rfs4_free_opens(oo, TRUE, TRUE); 3216 } 3217 3218 rfs4_dbe_unlock(cp->rc_dbe); 3219 } 3220 3221 void 3222 rfs4_client_close(rfs4_client_t *cp) 3223 { 3224 /* Mark client as going away. */ 3225 rfs4_dbe_lock(cp->rc_dbe); 3226 rfs4_dbe_invalidate(cp->rc_dbe); 3227 rfs4_dbe_unlock(cp->rc_dbe); 3228 3229 rfs4_client_state_remove(cp); 3230 3231 /* Release the client */ 3232 rfs4_client_rele(cp); 3233 } 3234 3235 nfsstat4 3236 rfs4_check_clientid(clientid4 *cp, int setclid_confirm) 3237 { 3238 cid *cidp = (cid *) cp; 3239 3240 /* 3241 * If we are booted as a cluster node, check the embedded nodeid. 3242 * If it indicates that this clientid was generated on another node, 3243 * inform the client accordingly. 3244 */ 3245 if (cluster_bootflags & CLUSTER_BOOTED && foreign_clientid(cidp)) 3246 return (NFS4ERR_STALE_CLIENTID); 3247 3248 /* 3249 * If the server start time matches the time provided 3250 * by the client (via the clientid) and this is NOT a 3251 * setclientid_confirm then return EXPIRED. 3252 */ 3253 if (!setclid_confirm && cidp->impl_id.start_time == rfs4_start_time) 3254 return (NFS4ERR_EXPIRED); 3255 3256 return (NFS4ERR_STALE_CLIENTID); 3257 } 3258 3259 /* 3260 * This is used when a stateid has not been found amongst the 3261 * current server's state. Check the stateid to see if it 3262 * was from this server instantiation or not. 3263 */ 3264 static nfsstat4 3265 what_stateid_error(stateid_t *id, stateid_type_t type) 3266 { 3267 /* If we are booted as a cluster node, was stateid locally generated? */ 3268 if ((cluster_bootflags & CLUSTER_BOOTED) && foreign_stateid(id)) 3269 return (NFS4ERR_STALE_STATEID); 3270 3271 /* If types don't match then no use checking further */ 3272 if (type != id->bits.type) 3273 return (NFS4ERR_BAD_STATEID); 3274 3275 /* From a previous server instantiation, return STALE */ 3276 if (id->bits.boottime < rfs4_start_time) 3277 return (NFS4ERR_STALE_STATEID); 3278 3279 /* 3280 * From this server but the state is most likely beyond lease 3281 * timeout: return NFS4ERR_EXPIRED. However, there is the 3282 * case of a delegation stateid. For delegations, there is a 3283 * case where the state can be removed without the client's 3284 * knowledge/consent: revocation. In the case of delegation 3285 * revocation, the delegation state will be removed and will 3286 * not be found. If the client does something like a 3287 * DELEGRETURN or even a READ/WRITE with a delegatoin stateid 3288 * that has been revoked, the server should return BAD_STATEID 3289 * instead of the more common EXPIRED error. 3290 */ 3291 if (id->bits.boottime == rfs4_start_time) { 3292 if (type == DELEGID) 3293 return (NFS4ERR_BAD_STATEID); 3294 else 3295 return (NFS4ERR_EXPIRED); 3296 } 3297 3298 return (NFS4ERR_BAD_STATEID); 3299 } 3300 3301 /* 3302 * Used later on to find the various state structs. When called from 3303 * rfs4_check_stateid()->rfs4_get_all_state(), no file struct lock is 3304 * taken (it is not needed) and helps on the read/write path with 3305 * respect to performance. 3306 */ 3307 static nfsstat4 3308 rfs4_get_state_lockit(stateid4 *stateid, rfs4_state_t **spp, 3309 rfs4_dbsearch_type_t find_invalid, bool_t lock_fp) 3310 { 3311 stateid_t *id = (stateid_t *)stateid; 3312 rfs4_state_t *sp; 3313 3314 *spp = NULL; 3315 3316 /* If we are booted as a cluster node, was stateid locally generated? */ 3317 if ((cluster_bootflags & CLUSTER_BOOTED) && foreign_stateid(id)) 3318 return (NFS4ERR_STALE_STATEID); 3319 3320 sp = rfs4_findstate(id, find_invalid, lock_fp); 3321 if (sp == NULL) { 3322 return (what_stateid_error(id, OPENID)); 3323 } 3324 3325 if (rfs4_lease_expired(sp->rs_owner->ro_client)) { 3326 if (lock_fp == TRUE) 3327 rfs4_state_rele(sp); 3328 else 3329 rfs4_state_rele_nounlock(sp); 3330 return (NFS4ERR_EXPIRED); 3331 } 3332 3333 *spp = sp; 3334 3335 return (NFS4_OK); 3336 } 3337 3338 nfsstat4 3339 rfs4_get_state(stateid4 *stateid, rfs4_state_t **spp, 3340 rfs4_dbsearch_type_t find_invalid) 3341 { 3342 return (rfs4_get_state_lockit(stateid, spp, find_invalid, TRUE)); 3343 } 3344 3345 int 3346 rfs4_check_stateid_seqid(rfs4_state_t *sp, stateid4 *stateid) 3347 { 3348 stateid_t *id = (stateid_t *)stateid; 3349 3350 if (rfs4_lease_expired(sp->rs_owner->ro_client)) 3351 return (NFS4_CHECK_STATEID_EXPIRED); 3352 3353 /* Stateid is some time in the future - that's bad */ 3354 if (sp->rs_stateid.bits.chgseq < id->bits.chgseq) 3355 return (NFS4_CHECK_STATEID_BAD); 3356 3357 if (sp->rs_stateid.bits.chgseq == id->bits.chgseq + 1) 3358 return (NFS4_CHECK_STATEID_REPLAY); 3359 3360 /* Stateid is some time in the past - that's old */ 3361 if (sp->rs_stateid.bits.chgseq > id->bits.chgseq) 3362 return (NFS4_CHECK_STATEID_OLD); 3363 3364 /* Caller needs to know about confirmation before closure */ 3365 if (sp->rs_owner->ro_need_confirm) 3366 return (NFS4_CHECK_STATEID_UNCONFIRMED); 3367 3368 if (sp->rs_closed == TRUE) 3369 return (NFS4_CHECK_STATEID_CLOSED); 3370 3371 return (NFS4_CHECK_STATEID_OKAY); 3372 } 3373 3374 int 3375 rfs4_check_lo_stateid_seqid(rfs4_lo_state_t *lsp, stateid4 *stateid) 3376 { 3377 stateid_t *id = (stateid_t *)stateid; 3378 3379 if (rfs4_lease_expired(lsp->rls_state->rs_owner->ro_client)) 3380 return (NFS4_CHECK_STATEID_EXPIRED); 3381 3382 /* Stateid is some time in the future - that's bad */ 3383 if (lsp->rls_lockid.bits.chgseq < id->bits.chgseq) 3384 return (NFS4_CHECK_STATEID_BAD); 3385 3386 if (lsp->rls_lockid.bits.chgseq == id->bits.chgseq + 1) 3387 return (NFS4_CHECK_STATEID_REPLAY); 3388 3389 /* Stateid is some time in the past - that's old */ 3390 if (lsp->rls_lockid.bits.chgseq > id->bits.chgseq) 3391 return (NFS4_CHECK_STATEID_OLD); 3392 3393 if (lsp->rls_state->rs_closed == TRUE) 3394 return (NFS4_CHECK_STATEID_CLOSED); 3395 3396 return (NFS4_CHECK_STATEID_OKAY); 3397 } 3398 3399 nfsstat4 3400 rfs4_get_deleg_state(stateid4 *stateid, rfs4_deleg_state_t **dspp) 3401 { 3402 stateid_t *id = (stateid_t *)stateid; 3403 rfs4_deleg_state_t *dsp; 3404 3405 *dspp = NULL; 3406 3407 /* If we are booted as a cluster node, was stateid locally generated? */ 3408 if ((cluster_bootflags & CLUSTER_BOOTED) && foreign_stateid(id)) 3409 return (NFS4ERR_STALE_STATEID); 3410 3411 dsp = rfs4_finddelegstate(id); 3412 if (dsp == NULL) { 3413 return (what_stateid_error(id, DELEGID)); 3414 } 3415 3416 if (rfs4_lease_expired(dsp->rds_client)) { 3417 rfs4_deleg_state_rele(dsp); 3418 return (NFS4ERR_EXPIRED); 3419 } 3420 3421 *dspp = dsp; 3422 3423 return (NFS4_OK); 3424 } 3425 3426 nfsstat4 3427 rfs4_get_lo_state(stateid4 *stateid, rfs4_lo_state_t **lspp, bool_t lock_fp) 3428 { 3429 stateid_t *id = (stateid_t *)stateid; 3430 rfs4_lo_state_t *lsp; 3431 3432 *lspp = NULL; 3433 3434 /* If we are booted as a cluster node, was stateid locally generated? */ 3435 if ((cluster_bootflags & CLUSTER_BOOTED) && foreign_stateid(id)) 3436 return (NFS4ERR_STALE_STATEID); 3437 3438 lsp = rfs4_findlo_state(id, lock_fp); 3439 if (lsp == NULL) { 3440 return (what_stateid_error(id, LOCKID)); 3441 } 3442 3443 if (rfs4_lease_expired(lsp->rls_state->rs_owner->ro_client)) { 3444 rfs4_lo_state_rele(lsp, lock_fp); 3445 return (NFS4ERR_EXPIRED); 3446 } 3447 3448 *lspp = lsp; 3449 3450 return (NFS4_OK); 3451 } 3452 3453 static nfsstat4 3454 rfs4_get_all_state(stateid4 *sid, rfs4_state_t **spp, 3455 rfs4_deleg_state_t **dspp, rfs4_lo_state_t **lspp) 3456 { 3457 rfs4_state_t *sp = NULL; 3458 rfs4_deleg_state_t *dsp = NULL; 3459 rfs4_lo_state_t *lsp = NULL; 3460 stateid_t *id; 3461 nfsstat4 status; 3462 3463 *spp = NULL; *dspp = NULL; *lspp = NULL; 3464 3465 id = (stateid_t *)sid; 3466 switch (id->bits.type) { 3467 case OPENID: 3468 status = rfs4_get_state_lockit(sid, &sp, FALSE, FALSE); 3469 break; 3470 case DELEGID: 3471 status = rfs4_get_deleg_state(sid, &dsp); 3472 break; 3473 case LOCKID: 3474 status = rfs4_get_lo_state(sid, &lsp, FALSE); 3475 if (status == NFS4_OK) { 3476 sp = lsp->rls_state; 3477 rfs4_dbe_hold(sp->rs_dbe); 3478 } 3479 break; 3480 default: 3481 status = NFS4ERR_BAD_STATEID; 3482 } 3483 3484 if (status == NFS4_OK) { 3485 *spp = sp; 3486 *dspp = dsp; 3487 *lspp = lsp; 3488 } 3489 3490 return (status); 3491 } 3492 3493 /* 3494 * Given the I/O mode (FREAD or FWRITE), this checks whether the 3495 * rfs4_state_t struct has access to do this operation and if so 3496 * return NFS4_OK; otherwise the proper NFSv4 error is returned. 3497 */ 3498 nfsstat4 3499 rfs4_state_has_access(rfs4_state_t *sp, int mode, vnode_t *vp) 3500 { 3501 nfsstat4 stat = NFS4_OK; 3502 rfs4_file_t *fp; 3503 bool_t create = FALSE; 3504 3505 rfs4_dbe_lock(sp->rs_dbe); 3506 if (mode == FWRITE) { 3507 if (!(sp->rs_share_access & OPEN4_SHARE_ACCESS_WRITE)) { 3508 stat = NFS4ERR_OPENMODE; 3509 } 3510 } else if (mode == FREAD) { 3511 if (!(sp->rs_share_access & OPEN4_SHARE_ACCESS_READ)) { 3512 /* 3513 * If we have OPENed the file with DENYing access 3514 * to both READ and WRITE then no one else could 3515 * have OPENed the file, hence no conflicting READ 3516 * deny. This check is merely an optimization. 3517 */ 3518 if (sp->rs_share_deny == OPEN4_SHARE_DENY_BOTH) 3519 goto out; 3520 3521 /* Check against file struct's DENY mode */ 3522 fp = rfs4_findfile(vp, NULL, &create); 3523 if (fp != NULL) { 3524 int deny_read = 0; 3525 rfs4_dbe_lock(fp->rf_dbe); 3526 /* 3527 * Check if any other open owner has the file 3528 * OPENed with deny READ. 3529 */ 3530 if (sp->rs_share_deny & OPEN4_SHARE_DENY_READ) 3531 deny_read = 1; 3532 ASSERT(fp->rf_deny_read - deny_read >= 0); 3533 if (fp->rf_deny_read - deny_read > 0) 3534 stat = NFS4ERR_OPENMODE; 3535 rfs4_dbe_unlock(fp->rf_dbe); 3536 rfs4_file_rele(fp); 3537 } 3538 } 3539 } else { 3540 /* Illegal I/O mode */ 3541 stat = NFS4ERR_INVAL; 3542 } 3543 out: 3544 rfs4_dbe_unlock(sp->rs_dbe); 3545 return (stat); 3546 } 3547 3548 /* 3549 * Given the I/O mode (FREAD or FWRITE), the vnode, the stateid and whether 3550 * the file is being truncated, return NFS4_OK if allowed or appropriate 3551 * V4 error if not. Note NFS4ERR_DELAY will be returned and a recall on 3552 * the associated file will be done if the I/O is not consistent with any 3553 * delegation in effect on the file. Should be holding VOP_RWLOCK, either 3554 * as reader or writer as appropriate. rfs4_op_open will acquire the 3555 * VOP_RWLOCK as writer when setting up delegation. If the stateid is bad 3556 * this routine will return NFS4ERR_BAD_STATEID. In addition, through the 3557 * deleg parameter, we will return whether a write delegation is held by 3558 * the client associated with this stateid. 3559 * If the server instance associated with the relevant client is in its 3560 * grace period, return NFS4ERR_GRACE. 3561 */ 3562 3563 nfsstat4 3564 rfs4_check_stateid(int mode, vnode_t *vp, 3565 stateid4 *stateid, bool_t trunc, bool_t *deleg, 3566 bool_t do_access, caller_context_t *ct) 3567 { 3568 rfs4_file_t *fp; 3569 bool_t create = FALSE; 3570 rfs4_state_t *sp; 3571 rfs4_deleg_state_t *dsp; 3572 rfs4_lo_state_t *lsp; 3573 stateid_t *id = (stateid_t *)stateid; 3574 nfsstat4 stat = NFS4_OK; 3575 3576 if (ct != NULL) { 3577 ct->cc_sysid = 0; 3578 ct->cc_pid = 0; 3579 ct->cc_caller_id = nfs4_srv_caller_id; 3580 ct->cc_flags = CC_DONTBLOCK; 3581 } 3582 3583 if (ISSPECIAL(stateid)) { 3584 fp = rfs4_findfile(vp, NULL, &create); 3585 if (fp == NULL) 3586 return (NFS4_OK); 3587 if (fp->rf_dinfo.rd_dtype == OPEN_DELEGATE_NONE) { 3588 rfs4_file_rele(fp); 3589 return (NFS4_OK); 3590 } 3591 if (mode == FWRITE || 3592 fp->rf_dinfo.rd_dtype == OPEN_DELEGATE_WRITE) { 3593 rfs4_recall_deleg(fp, trunc, NULL); 3594 rfs4_file_rele(fp); 3595 return (NFS4ERR_DELAY); 3596 } 3597 rfs4_file_rele(fp); 3598 return (NFS4_OK); 3599 } else { 3600 stat = rfs4_get_all_state(stateid, &sp, &dsp, &lsp); 3601 if (stat != NFS4_OK) 3602 return (stat); 3603 if (lsp != NULL) { 3604 /* Is associated server instance in its grace period? */ 3605 if (rfs4_clnt_in_grace(lsp->rls_locker->rl_client)) { 3606 rfs4_lo_state_rele(lsp, FALSE); 3607 if (sp != NULL) 3608 rfs4_state_rele_nounlock(sp); 3609 return (NFS4ERR_GRACE); 3610 } 3611 if (id->bits.type == LOCKID) { 3612 /* Seqid in the future? - that's bad */ 3613 if (lsp->rls_lockid.bits.chgseq < 3614 id->bits.chgseq) { 3615 rfs4_lo_state_rele(lsp, FALSE); 3616 if (sp != NULL) 3617 rfs4_state_rele_nounlock(sp); 3618 return (NFS4ERR_BAD_STATEID); 3619 } 3620 /* Seqid in the past? - that's old */ 3621 if (lsp->rls_lockid.bits.chgseq > 3622 id->bits.chgseq) { 3623 rfs4_lo_state_rele(lsp, FALSE); 3624 if (sp != NULL) 3625 rfs4_state_rele_nounlock(sp); 3626 return (NFS4ERR_OLD_STATEID); 3627 } 3628 /* Ensure specified filehandle matches */ 3629 if (lsp->rls_state->rs_finfo->rf_vp != vp) { 3630 rfs4_lo_state_rele(lsp, FALSE); 3631 if (sp != NULL) 3632 rfs4_state_rele_nounlock(sp); 3633 return (NFS4ERR_BAD_STATEID); 3634 } 3635 } 3636 if (ct != NULL) { 3637 ct->cc_sysid = 3638 lsp->rls_locker->rl_client->rc_sysidt; 3639 ct->cc_pid = lsp->rls_locker->rl_pid; 3640 } 3641 rfs4_lo_state_rele(lsp, FALSE); 3642 } 3643 3644 /* Stateid provided was an "open" stateid */ 3645 if (sp != NULL) { 3646 /* Is associated server instance in its grace period? */ 3647 if (rfs4_clnt_in_grace(sp->rs_owner->ro_client)) { 3648 rfs4_state_rele_nounlock(sp); 3649 return (NFS4ERR_GRACE); 3650 } 3651 if (id->bits.type == OPENID) { 3652 /* Seqid in the future? - that's bad */ 3653 if (sp->rs_stateid.bits.chgseq < 3654 id->bits.chgseq) { 3655 rfs4_state_rele_nounlock(sp); 3656 return (NFS4ERR_BAD_STATEID); 3657 } 3658 /* Seqid in the past - that's old */ 3659 if (sp->rs_stateid.bits.chgseq > 3660 id->bits.chgseq) { 3661 rfs4_state_rele_nounlock(sp); 3662 return (NFS4ERR_OLD_STATEID); 3663 } 3664 } 3665 /* Ensure specified filehandle matches */ 3666 if (sp->rs_finfo->rf_vp != vp) { 3667 rfs4_state_rele_nounlock(sp); 3668 return (NFS4ERR_BAD_STATEID); 3669 } 3670 3671 if (sp->rs_owner->ro_need_confirm) { 3672 rfs4_state_rele_nounlock(sp); 3673 return (NFS4ERR_BAD_STATEID); 3674 } 3675 3676 if (sp->rs_closed == TRUE) { 3677 rfs4_state_rele_nounlock(sp); 3678 return (NFS4ERR_OLD_STATEID); 3679 } 3680 3681 if (do_access) 3682 stat = rfs4_state_has_access(sp, mode, vp); 3683 else 3684 stat = NFS4_OK; 3685 3686 /* 3687 * Return whether this state has write 3688 * delegation if desired 3689 */ 3690 if (deleg && (sp->rs_finfo->rf_dinfo.rd_dtype == 3691 OPEN_DELEGATE_WRITE)) 3692 *deleg = TRUE; 3693 3694 /* 3695 * We got a valid stateid, so we update the 3696 * lease on the client. Ideally we would like 3697 * to do this after the calling op succeeds, 3698 * but for now this will be good 3699 * enough. Callers of this routine are 3700 * currently insulated from the state stuff. 3701 */ 3702 rfs4_update_lease(sp->rs_owner->ro_client); 3703 3704 /* 3705 * If a delegation is present on this file and 3706 * this is a WRITE, then update the lastwrite 3707 * time to indicate that activity is present. 3708 */ 3709 if (sp->rs_finfo->rf_dinfo.rd_dtype == 3710 OPEN_DELEGATE_WRITE && 3711 mode == FWRITE) { 3712 sp->rs_finfo->rf_dinfo.rd_time_lastwrite = 3713 gethrestime_sec(); 3714 } 3715 3716 rfs4_state_rele_nounlock(sp); 3717 3718 return (stat); 3719 } 3720 3721 if (dsp != NULL) { 3722 /* Is associated server instance in its grace period? */ 3723 if (rfs4_clnt_in_grace(dsp->rds_client)) { 3724 rfs4_deleg_state_rele(dsp); 3725 return (NFS4ERR_GRACE); 3726 } 3727 if (dsp->rds_delegid.bits.chgseq != id->bits.chgseq) { 3728 rfs4_deleg_state_rele(dsp); 3729 return (NFS4ERR_BAD_STATEID); 3730 } 3731 3732 /* Ensure specified filehandle matches */ 3733 if (dsp->rds_finfo->rf_vp != vp) { 3734 rfs4_deleg_state_rele(dsp); 3735 return (NFS4ERR_BAD_STATEID); 3736 } 3737 /* 3738 * Return whether this state has write 3739 * delegation if desired 3740 */ 3741 if (deleg && (dsp->rds_finfo->rf_dinfo.rd_dtype == 3742 OPEN_DELEGATE_WRITE)) 3743 *deleg = TRUE; 3744 3745 rfs4_update_lease(dsp->rds_client); 3746 3747 /* 3748 * If a delegation is present on this file and 3749 * this is a WRITE, then update the lastwrite 3750 * time to indicate that activity is present. 3751 */ 3752 if (dsp->rds_finfo->rf_dinfo.rd_dtype == 3753 OPEN_DELEGATE_WRITE && mode == FWRITE) { 3754 dsp->rds_finfo->rf_dinfo.rd_time_lastwrite = 3755 gethrestime_sec(); 3756 } 3757 3758 /* 3759 * XXX - what happens if this is a WRITE and the 3760 * delegation type of for READ. 3761 */ 3762 rfs4_deleg_state_rele(dsp); 3763 3764 return (stat); 3765 } 3766 /* 3767 * If we got this far, something bad happened 3768 */ 3769 return (NFS4ERR_BAD_STATEID); 3770 } 3771 } 3772 3773 3774 /* 3775 * This is a special function in that for the file struct provided the 3776 * server wants to remove/close all current state associated with the 3777 * file. The prime use of this would be with OP_REMOVE to force the 3778 * release of state and particularly of file locks. 3779 * 3780 * There is an assumption that there is no delegations outstanding on 3781 * this file at this point. The caller should have waited for those 3782 * to be returned or revoked. 3783 */ 3784 void 3785 rfs4_close_all_state(rfs4_file_t *fp) 3786 { 3787 rfs4_state_t *sp; 3788 3789 rfs4_dbe_lock(fp->rf_dbe); 3790 3791 #ifdef DEBUG 3792 /* only applies when server is handing out delegations */ 3793 if (rfs4_deleg_policy != SRV_NEVER_DELEGATE) 3794 ASSERT(fp->rf_dinfo.rd_hold_grant > 0); 3795 #endif 3796 3797 /* No delegations for this file */ 3798 ASSERT(list_is_empty(&fp->rf_delegstatelist)); 3799 3800 /* Make sure that it can not be found */ 3801 rfs4_dbe_invalidate(fp->rf_dbe); 3802 3803 if (fp->rf_vp == NULL) { 3804 rfs4_dbe_unlock(fp->rf_dbe); 3805 return; 3806 } 3807 rfs4_dbe_unlock(fp->rf_dbe); 3808 3809 /* 3810 * Hold as writer to prevent other server threads from 3811 * processing requests related to the file while all state is 3812 * being removed. 3813 */ 3814 rw_enter(&fp->rf_file_rwlock, RW_WRITER); 3815 3816 /* Remove ALL state from the file */ 3817 while (sp = rfs4_findstate_by_file(fp)) { 3818 rfs4_state_close(sp, FALSE, FALSE, CRED()); 3819 rfs4_state_rele_nounlock(sp); 3820 } 3821 3822 /* 3823 * This is only safe since there are no further references to 3824 * the file. 3825 */ 3826 rfs4_dbe_lock(fp->rf_dbe); 3827 if (fp->rf_vp) { 3828 vnode_t *vp = fp->rf_vp; 3829 3830 mutex_enter(&vp->v_vsd_lock); 3831 (void) vsd_set(vp, nfs4_srv_vkey, NULL); 3832 mutex_exit(&vp->v_vsd_lock); 3833 VN_RELE(vp); 3834 fp->rf_vp = NULL; 3835 } 3836 rfs4_dbe_unlock(fp->rf_dbe); 3837 3838 /* Finally let other references to proceed */ 3839 rw_exit(&fp->rf_file_rwlock); 3840 } 3841 3842 /* 3843 * This function is used as a target for the rfs4_dbe_walk() call 3844 * below. The purpose of this function is to see if the 3845 * lockowner_state refers to a file that resides within the exportinfo 3846 * export. If so, then remove the lock_owner state (file locks and 3847 * share "locks") for this object since the intent is the server is 3848 * unexporting the specified directory. Be sure to invalidate the 3849 * object after the state has been released 3850 */ 3851 static void 3852 rfs4_lo_state_walk_callout(rfs4_entry_t u_entry, void *e) 3853 { 3854 rfs4_lo_state_t *lsp = (rfs4_lo_state_t *)u_entry; 3855 struct exportinfo *exi = (struct exportinfo *)e; 3856 nfs_fh4_fmt_t fhfmt4, *exi_fhp, *finfo_fhp; 3857 fhandle_t *efhp; 3858 3859 efhp = (fhandle_t *)&exi->exi_fh; 3860 exi_fhp = (nfs_fh4_fmt_t *)&fhfmt4; 3861 3862 FH_TO_FMT4(efhp, exi_fhp); 3863 3864 finfo_fhp = (nfs_fh4_fmt_t *)lsp->rls_state->rs_finfo-> 3865 rf_filehandle.nfs_fh4_val; 3866 3867 if (EQFSID(&finfo_fhp->fh4_fsid, &exi_fhp->fh4_fsid) && 3868 bcmp(&finfo_fhp->fh4_xdata, &exi_fhp->fh4_xdata, 3869 exi_fhp->fh4_xlen) == 0) { 3870 rfs4_state_close(lsp->rls_state, FALSE, FALSE, CRED()); 3871 rfs4_dbe_invalidate(lsp->rls_dbe); 3872 rfs4_dbe_invalidate(lsp->rls_state->rs_dbe); 3873 } 3874 } 3875 3876 /* 3877 * This function is used as a target for the rfs4_dbe_walk() call 3878 * below. The purpose of this function is to see if the state refers 3879 * to a file that resides within the exportinfo export. If so, then 3880 * remove the open state for this object since the intent is the 3881 * server is unexporting the specified directory. The main result for 3882 * this type of entry is to invalidate it such it will not be found in 3883 * the future. 3884 */ 3885 static void 3886 rfs4_state_walk_callout(rfs4_entry_t u_entry, void *e) 3887 { 3888 rfs4_state_t *sp = (rfs4_state_t *)u_entry; 3889 struct exportinfo *exi = (struct exportinfo *)e; 3890 nfs_fh4_fmt_t fhfmt4, *exi_fhp, *finfo_fhp; 3891 fhandle_t *efhp; 3892 3893 efhp = (fhandle_t *)&exi->exi_fh; 3894 exi_fhp = (nfs_fh4_fmt_t *)&fhfmt4; 3895 3896 FH_TO_FMT4(efhp, exi_fhp); 3897 3898 finfo_fhp = 3899 (nfs_fh4_fmt_t *)sp->rs_finfo->rf_filehandle.nfs_fh4_val; 3900 3901 if (EQFSID(&finfo_fhp->fh4_fsid, &exi_fhp->fh4_fsid) && 3902 bcmp(&finfo_fhp->fh4_xdata, &exi_fhp->fh4_xdata, 3903 exi_fhp->fh4_xlen) == 0) { 3904 rfs4_state_close(sp, TRUE, FALSE, CRED()); 3905 rfs4_dbe_invalidate(sp->rs_dbe); 3906 } 3907 } 3908 3909 /* 3910 * This function is used as a target for the rfs4_dbe_walk() call 3911 * below. The purpose of this function is to see if the state refers 3912 * to a file that resides within the exportinfo export. If so, then 3913 * remove the deleg state for this object since the intent is the 3914 * server is unexporting the specified directory. The main result for 3915 * this type of entry is to invalidate it such it will not be found in 3916 * the future. 3917 */ 3918 static void 3919 rfs4_deleg_state_walk_callout(rfs4_entry_t u_entry, void *e) 3920 { 3921 rfs4_deleg_state_t *dsp = (rfs4_deleg_state_t *)u_entry; 3922 struct exportinfo *exi = (struct exportinfo *)e; 3923 nfs_fh4_fmt_t fhfmt4, *exi_fhp, *finfo_fhp; 3924 fhandle_t *efhp; 3925 3926 efhp = (fhandle_t *)&exi->exi_fh; 3927 exi_fhp = (nfs_fh4_fmt_t *)&fhfmt4; 3928 3929 FH_TO_FMT4(efhp, exi_fhp); 3930 3931 finfo_fhp = 3932 (nfs_fh4_fmt_t *)dsp->rds_finfo->rf_filehandle.nfs_fh4_val; 3933 3934 if (EQFSID(&finfo_fhp->fh4_fsid, &exi_fhp->fh4_fsid) && 3935 bcmp(&finfo_fhp->fh4_xdata, &exi_fhp->fh4_xdata, 3936 exi_fhp->fh4_xlen) == 0) { 3937 rfs4_dbe_invalidate(dsp->rds_dbe); 3938 } 3939 } 3940 3941 /* 3942 * This function is used as a target for the rfs4_dbe_walk() call 3943 * below. The purpose of this function is to see if the state refers 3944 * to a file that resides within the exportinfo export. If so, then 3945 * release vnode hold for this object since the intent is the server 3946 * is unexporting the specified directory. Invalidation will prevent 3947 * this struct from being found in the future. 3948 */ 3949 static void 3950 rfs4_file_walk_callout(rfs4_entry_t u_entry, void *e) 3951 { 3952 rfs4_file_t *fp = (rfs4_file_t *)u_entry; 3953 struct exportinfo *exi = (struct exportinfo *)e; 3954 nfs_fh4_fmt_t fhfmt4, *exi_fhp, *finfo_fhp; 3955 fhandle_t *efhp; 3956 3957 efhp = (fhandle_t *)&exi->exi_fh; 3958 exi_fhp = (nfs_fh4_fmt_t *)&fhfmt4; 3959 3960 FH_TO_FMT4(efhp, exi_fhp); 3961 3962 finfo_fhp = (nfs_fh4_fmt_t *)fp->rf_filehandle.nfs_fh4_val; 3963 3964 if (EQFSID(&finfo_fhp->fh4_fsid, &exi_fhp->fh4_fsid) && 3965 bcmp(&finfo_fhp->fh4_xdata, &exi_fhp->fh4_xdata, 3966 exi_fhp->fh4_xlen) == 0) { 3967 if (fp->rf_vp) { 3968 vnode_t *vp = fp->rf_vp; 3969 3970 /* 3971 * don't leak monitors and remove the reference 3972 * put on the vnode when the delegation was granted. 3973 */ 3974 if (fp->rf_dinfo.rd_dtype == OPEN_DELEGATE_READ) { 3975 (void) fem_uninstall(vp, deleg_rdops, 3976 (void *)fp); 3977 vn_open_downgrade(vp, FREAD); 3978 } else if (fp->rf_dinfo.rd_dtype == 3979 OPEN_DELEGATE_WRITE) { 3980 (void) fem_uninstall(vp, deleg_wrops, 3981 (void *)fp); 3982 vn_open_downgrade(vp, FREAD|FWRITE); 3983 } 3984 mutex_enter(&vp->v_vsd_lock); 3985 (void) vsd_set(vp, nfs4_srv_vkey, NULL); 3986 mutex_exit(&vp->v_vsd_lock); 3987 VN_RELE(vp); 3988 fp->rf_vp = NULL; 3989 } 3990 rfs4_dbe_invalidate(fp->rf_dbe); 3991 } 3992 } 3993 3994 /* 3995 * Given a directory that is being unexported, cleanup/release all 3996 * state in the server that refers to objects residing underneath this 3997 * particular export. The ordering of the release is important. 3998 * Lock_owner, then state and then file. 3999 */ 4000 void 4001 rfs4_clean_state_exi(struct exportinfo *exi) 4002 { 4003 mutex_enter(&rfs4_state_lock); 4004 4005 if (rfs4_server_state == NULL) { 4006 mutex_exit(&rfs4_state_lock); 4007 return; 4008 } 4009 4010 rfs4_dbe_walk(rfs4_lo_state_tab, rfs4_lo_state_walk_callout, exi); 4011 rfs4_dbe_walk(rfs4_state_tab, rfs4_state_walk_callout, exi); 4012 rfs4_dbe_walk(rfs4_deleg_state_tab, rfs4_deleg_state_walk_callout, exi); 4013 rfs4_dbe_walk(rfs4_file_tab, rfs4_file_walk_callout, exi); 4014 4015 mutex_exit(&rfs4_state_lock); 4016 } 4017
Indexes created Wed Feb 10 04:24:43 UTC 2010
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