1 /*- 2 * Copyright (c) 2009 Rick Macklem, University of Guelph 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 */ 27 28 #include <sys/cdefs.h> 29 __FBSDID("$FreeBSD$"); 30 31 /* 32 * These functions implement the client side state handling for NFSv4. 33 * NFSv4 state handling: 34 * - A lockowner is used to determine lock contention, so it 35 * corresponds directly to a Posix pid. (1 to 1 mapping) 36 * - The correct granularity of an OpenOwner is not nearly so 37 * obvious. An OpenOwner does the following: 38 * - provides a serial sequencing of Open/Close/Lock-with-new-lockowner 39 * - is used to check for Open/Share contention (not applicable to 40 * this client, since all Opens are Deny_None) 41 * As such, I considered both extreme. 42 * 1 OpenOwner per ClientID - Simple to manage, but fully serializes 43 * all Open, Close and Lock (with a new lockowner) Ops. 44 * 1 OpenOwner for each Open - This one results in an OpenConfirm for 45 * every Open, for most servers. 46 * So, I chose to use the same mapping as I did for LockOwnwers. 47 * The main concern here is that you can end up with multiple Opens 48 * for the same File Handle, but on different OpenOwners (opens 49 * inherited from parents, grandparents...) and you do not know 50 * which of these the vnodeop close applies to. This is handled by 51 * delaying the Close Op(s) until all of the Opens have been closed. 52 * (It is not yet obvious if this is the correct granularity.) 53 * - How the code handles serialization: 54 * - For the ClientId, it uses an exclusive lock while getting its 55 * SetClientId and during recovery. Otherwise, it uses a shared 56 * lock via a reference count. 57 * - For the rest of the data structures, it uses an SMP mutex 58 * (once the nfs client is SMP safe) and doesn't sleep while 59 * manipulating the linked lists. 60 * - The serialization of Open/Close/Lock/LockU falls out in the 61 * "wash", since OpenOwners and LockOwners are both mapped from 62 * Posix pid. In other words, there is only one Posix pid using 63 * any given owner, so that owner is serialized. (If you change 64 * the granularity of the OpenOwner, then code must be added to 65 * serialize Ops on the OpenOwner.) 66 * - When to get rid of OpenOwners and LockOwners. 67 * - When a process exits, it calls nfscl_cleanup(), which goes 68 * through the client list looking for all Open and Lock Owners. 69 * When one is found, it is marked "defunct" or in the case of 70 * an OpenOwner without any Opens, freed. 71 * The renew thread scans for defunct Owners and gets rid of them, 72 * if it can. The LockOwners will also be deleted when the 73 * associated Open is closed. 74 * - If the LockU or Close Op(s) fail during close in a way 75 * that could be recovered upon retry, they are relinked to the 76 * ClientId's defunct open list and retried by the renew thread 77 * until they succeed or an unmount/recovery occurs. 78 * (Since we are done with them, they do not need to be recovered.) 79 */ 80 81 #ifndef APPLEKEXT 82 #include <fs/nfs/nfsport.h> 83 84 /* 85 * Global variables 86 */ 87 extern struct nfsstats newnfsstats; 88 extern struct nfsreqhead nfsd_reqq; 89 NFSREQSPINLOCK; 90 NFSCLSTATEMUTEX; 91 int nfscl_inited = 0; 92 struct nfsclhead nfsclhead; /* Head of clientid list */ 93 int nfscl_deleghighwater = NFSCLDELEGHIGHWATER; 94 #endif /* !APPLEKEXT */ 95 96 static int nfscl_delegcnt = 0; 97 static int nfscl_getopen(struct nfsclownerhead *, u_int8_t *, int, u_int8_t *, 98 NFSPROC_T *, u_int32_t, struct nfsclowner **, struct nfsclopen **); 99 static void nfscl_clrelease(struct nfsclclient *); 100 static void nfscl_cleanclient(struct nfsclclient *); 101 static void nfscl_expireclient(struct nfsclclient *, struct nfsmount *, 102 struct ucred *, NFSPROC_T *); 103 static int nfscl_expireopen(struct nfsclclient *, struct nfsclopen *, 104 struct nfsmount *, struct ucred *, NFSPROC_T *); 105 static void nfscl_recover(struct nfsclclient *, struct ucred *, NFSPROC_T *); 106 static void nfscl_insertlock(struct nfscllockowner *, struct nfscllock *, 107 struct nfscllock *, int); 108 static int nfscl_updatelock(struct nfscllockowner *, struct nfscllock **, 109 struct nfscllock **, int); 110 static void nfscl_delegreturnall(struct nfsclclient *, NFSPROC_T *); 111 static u_int32_t nfscl_nextcbident(void); 112 static mount_t nfscl_getmnt(u_int32_t); 113 static struct nfscldeleg *nfscl_finddeleg(struct nfsclclient *, u_int8_t *, 114 int); 115 static int nfscl_checkconflict(struct nfscllockownerhead *, struct nfscllock *, 116 u_int8_t *, struct nfscllock **); 117 static void nfscl_freelockowner(struct nfscllockowner *, int); 118 static void nfscl_freealllocks(struct nfscllockownerhead *, int); 119 static int nfscl_localconflict(struct nfsclclient *, u_int8_t *, int, 120 struct nfscllock *, u_int8_t *, struct nfscldeleg *, struct nfscllock **); 121 static void nfscl_newopen(struct nfsclclient *, struct nfscldeleg *, 122 struct nfsclowner **, struct nfsclowner **, struct nfsclopen **, 123 struct nfsclopen **, u_int8_t *, u_int8_t *, int, int *); 124 static int nfscl_moveopen(vnode_t , struct nfsclclient *, 125 struct nfsmount *, struct nfsclopen *, struct nfsclowner *, 126 struct nfscldeleg *, struct ucred *, NFSPROC_T *); 127 static void nfscl_totalrecall(struct nfsclclient *); 128 static int nfscl_relock(vnode_t , struct nfsclclient *, struct nfsmount *, 129 struct nfscllockowner *, struct nfscllock *, struct ucred *, NFSPROC_T *); 130 static int nfscl_tryopen(struct nfsmount *, vnode_t , u_int8_t *, int, 131 u_int8_t *, int, u_int32_t, struct nfsclopen *, u_int8_t *, int, 132 struct nfscldeleg **, int, u_int32_t, struct ucred *, NFSPROC_T *); 133 static int nfscl_trylock(struct nfsmount *, vnode_t , u_int8_t *, 134 int, struct nfscllockowner *, int, int, u_int64_t, u_int64_t, short, 135 struct ucred *, NFSPROC_T *); 136 static int nfsrpc_reopen(struct nfsmount *, u_int8_t *, int, u_int32_t, 137 struct nfsclopen *, struct nfscldeleg **, struct ucred *, NFSPROC_T *); 138 static void nfscl_freedeleg(struct nfscldeleghead *, struct nfscldeleg *); 139 static int nfscl_errmap(struct nfsrv_descript *); 140 static void nfscl_cleanup_common(struct nfsclclient *, u_int8_t *); 141 static int nfscl_recalldeleg(struct nfsclclient *, struct nfsmount *, 142 struct nfscldeleg *, vnode_t, struct ucred *, NFSPROC_T *, int); 143 static void nfscl_freeopenowner(struct nfsclowner *, int); 144 static void nfscl_cleandeleg(struct nfscldeleg *); 145 static int nfscl_trydelegreturn(struct nfscldeleg *, struct ucred *, 146 struct nfsmount *, NFSPROC_T *); 147 148 static short nfscberr_null[] = { 149 0, 150 0, 151 }; 152 153 static short nfscberr_getattr[] = { 154 NFSERR_RESOURCE, 155 NFSERR_BADHANDLE, 156 NFSERR_BADXDR, 157 NFSERR_RESOURCE, 158 NFSERR_SERVERFAULT, 159 0, 160 }; 161 162 static short nfscberr_recall[] = { 163 NFSERR_RESOURCE, 164 NFSERR_BADHANDLE, 165 NFSERR_BADSTATEID, 166 NFSERR_BADXDR, 167 NFSERR_RESOURCE, 168 NFSERR_SERVERFAULT, 169 0, 170 }; 171 172 static short *nfscl_cberrmap[] = { 173 nfscberr_null, 174 nfscberr_null, 175 nfscberr_null, 176 nfscberr_getattr, 177 nfscberr_recall 178 }; 179 180 #define NETFAMILY(clp) \ 181 (((clp)->nfsc_flags & NFSCLFLAGS_AFINET6) ? AF_INET6 : AF_INET) 182 183 /* 184 * Called for an open operation. 185 * If the nfhp argument is NULL, just get an openowner. 186 */ 187 APPLESTATIC int 188 nfscl_open(vnode_t vp, u_int8_t *nfhp, int fhlen, u_int32_t amode, int usedeleg, 189 struct ucred *cred, NFSPROC_T *p, struct nfsclowner **owpp, 190 struct nfsclopen **opp, int *newonep, int *retp, int lockit) 191 { 192 struct nfsclclient *clp; 193 struct nfsclowner *owp, *nowp; 194 struct nfsclopen *op = NULL, *nop = NULL; 195 struct nfscldeleg *dp; 196 struct nfsclownerhead *ohp; 197 u_int8_t own[NFSV4CL_LOCKNAMELEN]; 198 int ret; 199 200 if (newonep != NULL) 201 *newonep = 0; 202 if (opp != NULL) 203 *opp = NULL; 204 if (owpp != NULL) 205 *owpp = NULL; 206 207 /* 208 * Might need one or both of these, so MALLOC them now, to 209 * avoid a tsleep() in MALLOC later. 210 */ 211 MALLOC(nowp, struct nfsclowner *, sizeof (struct nfsclowner), 212 M_NFSCLOWNER, M_WAITOK); 213 if (nfhp != NULL) 214 MALLOC(nop, struct nfsclopen *, sizeof (struct nfsclopen) + 215 fhlen - 1, M_NFSCLOPEN, M_WAITOK); 216 ret = nfscl_getcl(vp, cred, p, &clp); 217 if (ret != 0) { 218 FREE((caddr_t)nowp, M_NFSCLOWNER); 219 if (nop != NULL) 220 FREE((caddr_t)nop, M_NFSCLOPEN); 221 return (ret); 222 } 223 224 /* 225 * Get the Open iff it already exists. 226 * If none found, add the new one or return error, depending upon 227 * "create". 228 */ 229 nfscl_filllockowner(p, own); 230 NFSLOCKCLSTATE(); 231 dp = NULL; 232 /* First check the delegation list */ 233 if (nfhp != NULL && usedeleg) { 234 LIST_FOREACH(dp, NFSCLDELEGHASH(clp, nfhp, fhlen), nfsdl_hash) { 235 if (dp->nfsdl_fhlen == fhlen && 236 !NFSBCMP(nfhp, dp->nfsdl_fh, fhlen)) { 237 if (!(amode & NFSV4OPEN_ACCESSWRITE) || 238 (dp->nfsdl_flags & NFSCLDL_WRITE)) 239 break; 240 dp = NULL; 241 break; 242 } 243 } 244 } 245 246 if (dp != NULL) 247 ohp = &dp->nfsdl_owner; 248 else 249 ohp = &clp->nfsc_owner; 250 /* Now, search for an openowner */ 251 LIST_FOREACH(owp, ohp, nfsow_list) { 252 if (!NFSBCMP(owp->nfsow_owner, own, NFSV4CL_LOCKNAMELEN)) 253 break; 254 } 255 256 /* 257 * Create a new open, as required. 258 */ 259 nfscl_newopen(clp, dp, &owp, &nowp, &op, &nop, own, nfhp, fhlen, 260 newonep); 261 262 /* 263 * Serialize modifications to the open owner for multiple threads 264 * within the same process using a read/write sleep lock. 265 */ 266 if (lockit) 267 nfscl_lockexcl(&owp->nfsow_rwlock, NFSCLSTATEMUTEXPTR); 268 NFSUNLOCKCLSTATE(); 269 if (nowp != NULL) 270 FREE((caddr_t)nowp, M_NFSCLOWNER); 271 if (nop != NULL) 272 FREE((caddr_t)nop, M_NFSCLOPEN); 273 if (owpp != NULL) 274 *owpp = owp; 275 if (opp != NULL) 276 *opp = op; 277 if (retp != NULL) { 278 if (nfhp != NULL && dp != NULL && nop == NULL) 279 /* new local open on delegation */ 280 *retp = NFSCLOPEN_SETCRED; 281 else 282 *retp = NFSCLOPEN_OK; 283 } 284 285 /* 286 * Now, check the mode on the open and return the appropriate 287 * value. 288 */ 289 if (op != NULL && (amode & ~(op->nfso_mode))) { 290 op->nfso_mode |= amode; 291 if (retp != NULL && dp == NULL) 292 *retp = NFSCLOPEN_DOOPEN; 293 } 294 return (0); 295 } 296 297 /* 298 * Create a new open, as required. 299 */ 300 static void 301 nfscl_newopen(struct nfsclclient *clp, struct nfscldeleg *dp, 302 struct nfsclowner **owpp, struct nfsclowner **nowpp, struct nfsclopen **opp, 303 struct nfsclopen **nopp, u_int8_t *own, u_int8_t *fhp, int fhlen, 304 int *newonep) 305 { 306 struct nfsclowner *owp = *owpp, *nowp; 307 struct nfsclopen *op, *nop; 308 309 if (nowpp != NULL) 310 nowp = *nowpp; 311 else 312 nowp = NULL; 313 if (nopp != NULL) 314 nop = *nopp; 315 else 316 nop = NULL; 317 if (owp == NULL && nowp != NULL) { 318 NFSBCOPY(own, nowp->nfsow_owner, NFSV4CL_LOCKNAMELEN); 319 LIST_INIT(&nowp->nfsow_open); 320 nowp->nfsow_clp = clp; 321 nowp->nfsow_seqid = 0; 322 nowp->nfsow_defunct = 0; 323 nfscl_lockinit(&nowp->nfsow_rwlock); 324 if (dp != NULL) { 325 newnfsstats.cllocalopenowners++; 326 LIST_INSERT_HEAD(&dp->nfsdl_owner, nowp, nfsow_list); 327 } else { 328 newnfsstats.clopenowners++; 329 LIST_INSERT_HEAD(&clp->nfsc_owner, nowp, nfsow_list); 330 } 331 owp = *owpp = nowp; 332 *nowpp = NULL; 333 if (newonep != NULL) 334 *newonep = 1; 335 } 336 337 /* If an fhp has been specified, create an Open as well. */ 338 if (fhp != NULL) { 339 /* and look for the correct open, based upon FH */ 340 LIST_FOREACH(op, &owp->nfsow_open, nfso_list) { 341 if (op->nfso_fhlen == fhlen && 342 !NFSBCMP(op->nfso_fh, fhp, fhlen)) 343 break; 344 } 345 if (op == NULL && nop != NULL) { 346 nop->nfso_own = owp; 347 nop->nfso_mode = 0; 348 nop->nfso_opencnt = 0; 349 nop->nfso_posixlock = 1; 350 nop->nfso_fhlen = fhlen; 351 NFSBCOPY(fhp, nop->nfso_fh, fhlen); 352 LIST_INIT(&nop->nfso_lock); 353 nop->nfso_stateid.seqid = 0; 354 nop->nfso_stateid.other[0] = 0; 355 nop->nfso_stateid.other[1] = 0; 356 nop->nfso_stateid.other[2] = 0; 357 if (dp != NULL) { 358 TAILQ_REMOVE(&clp->nfsc_deleg, dp, nfsdl_list); 359 TAILQ_INSERT_HEAD(&clp->nfsc_deleg, dp, 360 nfsdl_list); 361 dp->nfsdl_timestamp = NFSD_MONOSEC + 120; 362 newnfsstats.cllocalopens++; 363 } else { 364 newnfsstats.clopens++; 365 } 366 LIST_INSERT_HEAD(&owp->nfsow_open, nop, nfso_list); 367 *opp = nop; 368 *nopp = NULL; 369 if (newonep != NULL) 370 *newonep = 1; 371 } else { 372 *opp = op; 373 } 374 } 375 } 376 377 /* 378 * Called to find/add a delegation to a client. 379 */ 380 APPLESTATIC int 381 nfscl_deleg(mount_t mp, struct nfsclclient *clp, u_int8_t *nfhp, 382 int fhlen, struct ucred *cred, NFSPROC_T *p, struct nfscldeleg **dpp) 383 { 384 struct nfscldeleg *dp = *dpp, *tdp; 385 386 /* 387 * First, if we have received a Read delegation for a file on a 388 * read/write file system, just return it, because they aren't 389 * useful, imho. 390 */ 391 if (mp != NULL && dp != NULL && !NFSMNT_RDONLY(mp) && 392 (dp->nfsdl_flags & NFSCLDL_READ)) { 393 (void) nfscl_trydelegreturn(dp, cred, VFSTONFS(mp), p); 394 FREE((caddr_t)dp, M_NFSCLDELEG); 395 *dpp = NULL; 396 return (0); 397 } 398 399 /* Look for the correct deleg, based upon FH */ 400 NFSLOCKCLSTATE(); 401 tdp = nfscl_finddeleg(clp, nfhp, fhlen); 402 if (tdp == NULL) { 403 if (dp == NULL) { 404 NFSUNLOCKCLSTATE(); 405 return (NFSERR_BADSTATEID); 406 } 407 *dpp = NULL; 408 TAILQ_INSERT_HEAD(&clp->nfsc_deleg, dp, nfsdl_list); 409 LIST_INSERT_HEAD(NFSCLDELEGHASH(clp, nfhp, fhlen), dp, 410 nfsdl_hash); 411 dp->nfsdl_timestamp = NFSD_MONOSEC + 120; 412 newnfsstats.cldelegates++; 413 nfscl_delegcnt++; 414 } else { 415 /* 416 * Delegation already exists, what do we do if a new one?? 417 */ 418 if (dp != NULL) { 419 printf("Deleg already exists!\n"); 420 FREE((caddr_t)dp, M_NFSCLDELEG); 421 *dpp = NULL; 422 } else { 423 *dpp = tdp; 424 } 425 } 426 NFSUNLOCKCLSTATE(); 427 return (0); 428 } 429 430 /* 431 * Find a delegation for this file handle. Return NULL upon failure. 432 */ 433 static struct nfscldeleg * 434 nfscl_finddeleg(struct nfsclclient *clp, u_int8_t *fhp, int fhlen) 435 { 436 struct nfscldeleg *dp; 437 438 LIST_FOREACH(dp, NFSCLDELEGHASH(clp, fhp, fhlen), nfsdl_hash) { 439 if (dp->nfsdl_fhlen == fhlen && 440 !NFSBCMP(dp->nfsdl_fh, fhp, fhlen)) 441 break; 442 } 443 return (dp); 444 } 445 446 /* 447 * Get a stateid for an I/O operation. First, look for an open and iff 448 * found, return either a lockowner stateid or the open stateid. 449 * If no Open is found, just return error and the special stateid of all zeros. 450 */ 451 APPLESTATIC int 452 nfscl_getstateid(vnode_t vp, u_int8_t *nfhp, int fhlen, u_int32_t mode, 453 struct ucred *cred, NFSPROC_T *p, nfsv4stateid_t *stateidp, 454 void **lckpp) 455 { 456 struct nfsclclient *clp; 457 struct nfsclowner *owp; 458 struct nfsclopen *op = NULL; 459 struct nfscllockowner *lp; 460 struct nfscldeleg *dp; 461 struct nfsnode *np; 462 u_int8_t own[NFSV4CL_LOCKNAMELEN]; 463 int error, done; 464 465 *lckpp = NULL; 466 /* 467 * Initially, just set the special stateid of all zeros. 468 */ 469 stateidp->seqid = 0; 470 stateidp->other[0] = 0; 471 stateidp->other[1] = 0; 472 stateidp->other[2] = 0; 473 if (vnode_vtype(vp) != VREG) 474 return (EISDIR); 475 np = VTONFS(vp); 476 NFSLOCKCLSTATE(); 477 clp = nfscl_findcl(VFSTONFS(vnode_mount(vp))); 478 if (clp == NULL) { 479 NFSUNLOCKCLSTATE(); 480 return (EACCES); 481 } 482 483 /* 484 * Wait for recovery to complete. 485 */ 486 while ((clp->nfsc_flags & NFSCLFLAGS_RECVRINPROG)) 487 (void) nfsmsleep(&clp->nfsc_flags, NFSCLSTATEMUTEXPTR, 488 PZERO, "nfsrecvr", NULL); 489 490 /* 491 * First, look for a delegation. 492 */ 493 LIST_FOREACH(dp, NFSCLDELEGHASH(clp, nfhp, fhlen), nfsdl_hash) { 494 if (dp->nfsdl_fhlen == fhlen && 495 !NFSBCMP(nfhp, dp->nfsdl_fh, fhlen)) { 496 if (!(mode & NFSV4OPEN_ACCESSWRITE) || 497 (dp->nfsdl_flags & NFSCLDL_WRITE)) { 498 stateidp->seqid = dp->nfsdl_stateid.seqid; 499 stateidp->other[0] = dp->nfsdl_stateid.other[0]; 500 stateidp->other[1] = dp->nfsdl_stateid.other[1]; 501 stateidp->other[2] = dp->nfsdl_stateid.other[2]; 502 if (!(np->n_flag & NDELEGRECALL)) { 503 TAILQ_REMOVE(&clp->nfsc_deleg, dp, 504 nfsdl_list); 505 TAILQ_INSERT_HEAD(&clp->nfsc_deleg, dp, 506 nfsdl_list); 507 dp->nfsdl_timestamp = NFSD_MONOSEC + 508 120; 509 dp->nfsdl_rwlock.nfslock_usecnt++; 510 *lckpp = (void *)&dp->nfsdl_rwlock; 511 } 512 NFSUNLOCKCLSTATE(); 513 return (0); 514 } 515 break; 516 } 517 } 518 519 if (p != NULL) { 520 /* 521 * If p != NULL, we want to search the parentage tree 522 * for a matching OpenOwner and use that. 523 */ 524 nfscl_filllockowner(p, own); 525 error = nfscl_getopen(&clp->nfsc_owner, nfhp, fhlen, NULL, p, 526 mode, NULL, &op); 527 if (error == 0) { 528 /* now look for a lockowner */ 529 LIST_FOREACH(lp, &op->nfso_lock, nfsl_list) { 530 if (!NFSBCMP(lp->nfsl_owner, own, 531 NFSV4CL_LOCKNAMELEN)) { 532 stateidp->seqid = 533 lp->nfsl_stateid.seqid; 534 stateidp->other[0] = 535 lp->nfsl_stateid.other[0]; 536 stateidp->other[1] = 537 lp->nfsl_stateid.other[1]; 538 stateidp->other[2] = 539 lp->nfsl_stateid.other[2]; 540 NFSUNLOCKCLSTATE(); 541 return (0); 542 } 543 } 544 } 545 } 546 if (op == NULL) { 547 /* If not found, just look for any OpenOwner that will work. */ 548 done = 0; 549 owp = LIST_FIRST(&clp->nfsc_owner); 550 while (!done && owp != NULL) { 551 LIST_FOREACH(op, &owp->nfsow_open, nfso_list) { 552 if (op->nfso_fhlen == fhlen && 553 !NFSBCMP(op->nfso_fh, nfhp, fhlen) && 554 (mode & op->nfso_mode) == mode) { 555 done = 1; 556 break; 557 } 558 } 559 if (!done) 560 owp = LIST_NEXT(owp, nfsow_list); 561 } 562 if (!done) { 563 NFSUNLOCKCLSTATE(); 564 return (ENOENT); 565 } 566 /* for read aheads or write behinds, use the open cred */ 567 newnfs_copycred(&op->nfso_cred, cred); 568 } 569 570 /* 571 * No lock stateid, so return the open stateid. 572 */ 573 stateidp->seqid = op->nfso_stateid.seqid; 574 stateidp->other[0] = op->nfso_stateid.other[0]; 575 stateidp->other[1] = op->nfso_stateid.other[1]; 576 stateidp->other[2] = op->nfso_stateid.other[2]; 577 NFSUNLOCKCLSTATE(); 578 return (0); 579 } 580 581 /* 582 * Get an existing open. Search up the parentage tree for a match and 583 * return with the first one found. 584 */ 585 static int 586 nfscl_getopen(struct nfsclownerhead *ohp, u_int8_t *nfhp, int fhlen, 587 u_int8_t *rown, NFSPROC_T *p, u_int32_t mode, struct nfsclowner **owpp, 588 struct nfsclopen **opp) 589 { 590 struct nfsclowner *owp = NULL; 591 struct nfsclopen *op; 592 NFSPROC_T *nproc; 593 u_int8_t own[NFSV4CL_LOCKNAMELEN], *ownp; 594 595 nproc = p; 596 op = NULL; 597 while (op == NULL && (nproc != NULL || rown != NULL)) { 598 if (nproc != NULL) { 599 nfscl_filllockowner(nproc, own); 600 ownp = own; 601 } else { 602 ownp = rown; 603 } 604 /* Search the client list */ 605 LIST_FOREACH(owp, ohp, nfsow_list) { 606 if (!NFSBCMP(owp->nfsow_owner, ownp, 607 NFSV4CL_LOCKNAMELEN)) 608 break; 609 } 610 if (owp != NULL) { 611 /* and look for the correct open */ 612 LIST_FOREACH(op, &owp->nfsow_open, nfso_list) { 613 if (op->nfso_fhlen == fhlen && 614 !NFSBCMP(op->nfso_fh, nfhp, fhlen) 615 && (op->nfso_mode & mode) == mode) { 616 break; 617 } 618 } 619 } 620 if (rown != NULL) 621 break; 622 if (op == NULL) 623 nproc = nfscl_getparent(nproc); 624 } 625 if (op == NULL) { 626 return (EBADF); 627 } 628 if (owpp) 629 *owpp = owp; 630 *opp = op; 631 return (0); 632 } 633 634 /* 635 * Release use of an open owner. Called when open operations are done 636 * with the open owner. 637 */ 638 APPLESTATIC void 639 nfscl_ownerrelease(struct nfsclowner *owp, __unused int error, 640 __unused int candelete, int unlocked) 641 { 642 643 if (owp == NULL) 644 return; 645 NFSLOCKCLSTATE(); 646 if (!unlocked) 647 nfscl_lockunlock(&owp->nfsow_rwlock); 648 nfscl_clrelease(owp->nfsow_clp); 649 NFSUNLOCKCLSTATE(); 650 } 651 652 /* 653 * Release use of an open structure under an open owner. 654 */ 655 APPLESTATIC void 656 nfscl_openrelease(struct nfsclopen *op, int error, int candelete) 657 { 658 struct nfsclclient *clp; 659 struct nfsclowner *owp; 660 661 if (op == NULL) 662 return; 663 NFSLOCKCLSTATE(); 664 owp = op->nfso_own; 665 nfscl_lockunlock(&owp->nfsow_rwlock); 666 clp = owp->nfsow_clp; 667 if (error && candelete && op->nfso_opencnt == 0) 668 nfscl_freeopen(op, 0); 669 nfscl_clrelease(clp); 670 NFSUNLOCKCLSTATE(); 671 } 672 673 /* 674 * Called to get a clientid structure. It will optionally lock the 675 * client data structures to do the SetClientId/SetClientId_confirm, 676 * but will release that lock and return the clientid with a refernce 677 * count on it. 678 * If the "cred" argument is NULL, a new clientid should not be created. 679 * If the "p" argument is NULL, a SetClientID/SetClientIDConfirm cannot 680 * be done. 681 * It always clpp with a reference count on it, unless returning an error. 682 */ 683 APPLESTATIC int 684 nfscl_getcl(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 685 struct nfsclclient **clpp) 686 { 687 struct nfsclclient *clp; 688 struct nfsclclient *newclp = NULL; 689 struct nfscllockowner *lp, *nlp; 690 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 691 char uuid[HOSTUUIDLEN]; 692 int igotlock = 0, error, trystalecnt, clidinusedelay, i; 693 u_int16_t idlen = 0; 694 695 if (cred != NULL) { 696 getcredhostuuid(cred, uuid, sizeof uuid); 697 idlen = strlen(uuid); 698 if (idlen > 0) 699 idlen += sizeof (u_int64_t); 700 else 701 idlen += sizeof (u_int64_t) + 16; /* 16 random bytes */ 702 MALLOC(newclp, struct nfsclclient *, 703 sizeof (struct nfsclclient) + idlen - 1, M_NFSCLCLIENT, 704 M_WAITOK); 705 } 706 NFSLOCKCLSTATE(); 707 clp = nmp->nm_clp; 708 if (clp == NULL) { 709 if (newclp == NULL) { 710 NFSUNLOCKCLSTATE(); 711 return (EACCES); 712 } 713 clp = newclp; 714 NFSBZERO((caddr_t)clp, sizeof(struct nfsclclient) + idlen - 1); 715 clp->nfsc_idlen = idlen; 716 LIST_INIT(&clp->nfsc_owner); 717 TAILQ_INIT(&clp->nfsc_deleg); 718 for (i = 0; i < NFSCLDELEGHASHSIZE; i++) 719 LIST_INIT(&clp->nfsc_deleghash[i]); 720 LIST_INIT(&clp->nfsc_defunctlockowner); 721 clp->nfsc_flags = NFSCLFLAGS_INITED; 722 clp->nfsc_clientidrev = 1; 723 clp->nfsc_cbident = nfscl_nextcbident(); 724 nfscl_fillclid(nmp->nm_clval, uuid, clp->nfsc_id, 725 clp->nfsc_idlen); 726 LIST_INSERT_HEAD(&nfsclhead, clp, nfsc_list); 727 nmp->nm_clp = clp; 728 clp->nfsc_nmp = nmp; 729 NFSUNLOCKCLSTATE(); 730 nfscl_start_renewthread(clp); 731 } else { 732 NFSUNLOCKCLSTATE(); 733 if (newclp != NULL) 734 FREE((caddr_t)newclp, M_NFSCLCLIENT); 735 } 736 NFSLOCKCLSTATE(); 737 while ((clp->nfsc_flags & NFSCLFLAGS_HASCLIENTID) == 0 && !igotlock) 738 igotlock = nfsv4_lock(&clp->nfsc_lock, 1, NULL, 739 NFSCLSTATEMUTEXPTR); 740 if (!igotlock) 741 nfsv4_getref(&clp->nfsc_lock, NULL, NFSCLSTATEMUTEXPTR); 742 NFSUNLOCKCLSTATE(); 743 744 /* 745 * If it needs a clientid, do the setclientid now. 746 */ 747 if ((clp->nfsc_flags & NFSCLFLAGS_HASCLIENTID) == 0) { 748 if (!igotlock) 749 panic("nfscl_clget"); 750 if (p == NULL || cred == NULL) { 751 NFSLOCKCLSTATE(); 752 nfsv4_unlock(&clp->nfsc_lock, 0); 753 NFSUNLOCKCLSTATE(); 754 return (EACCES); 755 } 756 /* get rid of defunct lockowners */ 757 LIST_FOREACH_SAFE(lp, &clp->nfsc_defunctlockowner, nfsl_list, 758 nlp) { 759 nfscl_freelockowner(lp, 0); 760 } 761 /* 762 * If RFC3530 Sec. 14.2.33 is taken literally, 763 * NFSERR_CLIDINUSE will be returned persistently for the 764 * case where a new mount of the same file system is using 765 * a different principal. In practice, NFSERR_CLIDINUSE is 766 * only returned when there is outstanding unexpired state 767 * on the clientid. As such, try for twice the lease 768 * interval, if we know what that is. Otherwise, make a 769 * wild ass guess. 770 * The case of returning NFSERR_STALECLIENTID is far less 771 * likely, but might occur if there is a significant delay 772 * between doing the SetClientID and SetClientIDConfirm Ops, 773 * such that the server throws away the clientid before 774 * receiving the SetClientIDConfirm. 775 */ 776 if (clp->nfsc_renew > 0) 777 clidinusedelay = NFSCL_LEASE(clp->nfsc_renew) * 2; 778 else 779 clidinusedelay = 120; 780 trystalecnt = 3; 781 do { 782 error = nfsrpc_setclient(VFSTONFS(vnode_mount(vp)), 783 clp, cred, p); 784 if (error == NFSERR_STALECLIENTID || 785 error == NFSERR_STALEDONTRECOVER || 786 error == NFSERR_CLIDINUSE) { 787 (void) nfs_catnap(PZERO, error, "nfs_setcl"); 788 } 789 } while (((error == NFSERR_STALECLIENTID || 790 error == NFSERR_STALEDONTRECOVER) && --trystalecnt > 0) || 791 (error == NFSERR_CLIDINUSE && --clidinusedelay > 0)); 792 if (error) { 793 NFSLOCKCLSTATE(); 794 nfsv4_unlock(&clp->nfsc_lock, 0); 795 NFSUNLOCKCLSTATE(); 796 return (error); 797 } 798 clp->nfsc_flags |= NFSCLFLAGS_HASCLIENTID; 799 } 800 if (igotlock) { 801 NFSLOCKCLSTATE(); 802 nfsv4_unlock(&clp->nfsc_lock, 1); 803 NFSUNLOCKCLSTATE(); 804 } 805 806 *clpp = clp; 807 return (0); 808 } 809 810 /* 811 * Get a reference to a clientid and return it, if valid. 812 */ 813 APPLESTATIC struct nfsclclient * 814 nfscl_findcl(struct nfsmount *nmp) 815 { 816 struct nfsclclient *clp; 817 818 clp = nmp->nm_clp; 819 if (clp == NULL || !(clp->nfsc_flags & NFSCLFLAGS_HASCLIENTID)) 820 return (NULL); 821 return (clp); 822 } 823 824 /* 825 * Release the clientid structure. It may be locked or reference counted. 826 */ 827 static void 828 nfscl_clrelease(struct nfsclclient *clp) 829 { 830 831 if (clp->nfsc_lock.nfslock_lock & NFSV4LOCK_LOCK) 832 nfsv4_unlock(&clp->nfsc_lock, 0); 833 else 834 nfsv4_relref(&clp->nfsc_lock); 835 } 836 837 /* 838 * External call for nfscl_clrelease. 839 */ 840 APPLESTATIC void 841 nfscl_clientrelease(struct nfsclclient *clp) 842 { 843 844 NFSLOCKCLSTATE(); 845 if (clp->nfsc_lock.nfslock_lock & NFSV4LOCK_LOCK) 846 nfsv4_unlock(&clp->nfsc_lock, 0); 847 else 848 nfsv4_relref(&clp->nfsc_lock); 849 NFSUNLOCKCLSTATE(); 850 } 851 852 /* 853 * Called when wanting to lock a byte region. 854 */ 855 APPLESTATIC int 856 nfscl_getbytelock(vnode_t vp, u_int64_t off, u_int64_t len, 857 short type, struct ucred *cred, NFSPROC_T *p, struct nfsclclient *rclp, 858 int recovery, u_int8_t *rownp, u_int8_t *ropenownp, 859 struct nfscllockowner **lpp, int *newonep, int *donelocallyp) 860 { 861 struct nfscllockowner *lp; 862 struct nfsclopen *op; 863 struct nfsclclient *clp; 864 struct nfscllockowner *nlp; 865 struct nfscllock *nlop, *otherlop; 866 struct nfscldeleg *dp = NULL, *ldp = NULL; 867 struct nfscllockownerhead *lhp = NULL; 868 struct nfsnode *np; 869 u_int8_t own[NFSV4CL_LOCKNAMELEN], *ownp; 870 int error = 0, ret, donelocally = 0; 871 u_int32_t mode; 872 873 if (type == F_WRLCK) 874 mode = NFSV4OPEN_ACCESSWRITE; 875 else 876 mode = NFSV4OPEN_ACCESSREAD; 877 np = VTONFS(vp); 878 *lpp = NULL; 879 *newonep = 0; 880 *donelocallyp = 0; 881 882 /* 883 * Might need these, so MALLOC them now, to 884 * avoid a tsleep() in MALLOC later. 885 */ 886 MALLOC(nlp, struct nfscllockowner *, 887 sizeof (struct nfscllockowner), M_NFSCLLOCKOWNER, M_WAITOK); 888 MALLOC(otherlop, struct nfscllock *, 889 sizeof (struct nfscllock), M_NFSCLLOCK, M_WAITOK); 890 MALLOC(nlop, struct nfscllock *, 891 sizeof (struct nfscllock), M_NFSCLLOCK, M_WAITOK); 892 nlop->nfslo_type = type; 893 nlop->nfslo_first = off; 894 if (len == NFS64BITSSET) { 895 nlop->nfslo_end = NFS64BITSSET; 896 } else { 897 nlop->nfslo_end = off + len; 898 if (nlop->nfslo_end <= nlop->nfslo_first) 899 error = NFSERR_INVAL; 900 } 901 902 if (!error) { 903 if (recovery) 904 clp = rclp; 905 else 906 error = nfscl_getcl(vp, cred, p, &clp); 907 } 908 if (error) { 909 FREE((caddr_t)nlp, M_NFSCLLOCKOWNER); 910 FREE((caddr_t)otherlop, M_NFSCLLOCK); 911 FREE((caddr_t)nlop, M_NFSCLLOCK); 912 return (error); 913 } 914 915 op = NULL; 916 if (recovery) { 917 ownp = rownp; 918 } else { 919 nfscl_filllockowner(p, own); 920 ownp = own; 921 } 922 if (!recovery) { 923 NFSLOCKCLSTATE(); 924 /* 925 * First, search for a delegation. If one exists for this file, 926 * the lock can be done locally against it, so long as there 927 * isn't a local lock conflict. 928 */ 929 ldp = dp = nfscl_finddeleg(clp, np->n_fhp->nfh_fh, 930 np->n_fhp->nfh_len); 931 /* Just sanity check for correct type of delegation */ 932 if (dp != NULL && ((dp->nfsdl_flags & NFSCLDL_RECALL) || 933 (type == F_WRLCK && !(dp->nfsdl_flags & NFSCLDL_WRITE)))) 934 dp = NULL; 935 } 936 if (dp != NULL) { 937 /* Now, find the associated open to get the correct openowner */ 938 ret = nfscl_getopen(&dp->nfsdl_owner, np->n_fhp->nfh_fh, 939 np->n_fhp->nfh_len, NULL, p, mode, NULL, &op); 940 if (ret) 941 ret = nfscl_getopen(&clp->nfsc_owner, 942 np->n_fhp->nfh_fh, np->n_fhp->nfh_len, NULL, p, 943 mode, NULL, &op); 944 if (!ret) { 945 lhp = &dp->nfsdl_lock; 946 TAILQ_REMOVE(&clp->nfsc_deleg, dp, nfsdl_list); 947 TAILQ_INSERT_HEAD(&clp->nfsc_deleg, dp, nfsdl_list); 948 dp->nfsdl_timestamp = NFSD_MONOSEC + 120; 949 donelocally = 1; 950 } else { 951 dp = NULL; 952 } 953 } 954 if (!donelocally) { 955 /* 956 * Get the related Open. 957 */ 958 if (recovery) 959 error = nfscl_getopen(&clp->nfsc_owner, 960 np->n_fhp->nfh_fh, np->n_fhp->nfh_len, ropenownp, 961 NULL, mode, NULL, &op); 962 else 963 error = nfscl_getopen(&clp->nfsc_owner, 964 np->n_fhp->nfh_fh, np->n_fhp->nfh_len, NULL, p, 965 mode, NULL, &op); 966 if (!error) 967 lhp = &op->nfso_lock; 968 } 969 if (!error && !recovery) 970 error = nfscl_localconflict(clp, np->n_fhp->nfh_fh, 971 np->n_fhp->nfh_len, nlop, ownp, ldp, NULL); 972 if (error) { 973 if (!recovery) { 974 nfscl_clrelease(clp); 975 NFSUNLOCKCLSTATE(); 976 } 977 FREE((caddr_t)nlp, M_NFSCLLOCKOWNER); 978 FREE((caddr_t)otherlop, M_NFSCLLOCK); 979 FREE((caddr_t)nlop, M_NFSCLLOCK); 980 return (error); 981 } 982 983 /* 984 * Ok, see if a lockowner exists and create one, as required. 985 */ 986 LIST_FOREACH(lp, lhp, nfsl_list) { 987 if (!NFSBCMP(lp->nfsl_owner, ownp, NFSV4CL_LOCKNAMELEN)) 988 break; 989 } 990 if (lp == NULL) { 991 NFSBCOPY(ownp, nlp->nfsl_owner, NFSV4CL_LOCKNAMELEN); 992 if (recovery) 993 NFSBCOPY(ropenownp, nlp->nfsl_openowner, 994 NFSV4CL_LOCKNAMELEN); 995 else 996 NFSBCOPY(op->nfso_own->nfsow_owner, nlp->nfsl_openowner, 997 NFSV4CL_LOCKNAMELEN); 998 nlp->nfsl_seqid = 0; 999 nlp->nfsl_defunct = 0; 1000 nlp->nfsl_inprog = NULL; 1001 nfscl_lockinit(&nlp->nfsl_rwlock); 1002 LIST_INIT(&nlp->nfsl_lock); 1003 if (donelocally) { 1004 nlp->nfsl_open = NULL; 1005 newnfsstats.cllocallockowners++; 1006 } else { 1007 nlp->nfsl_open = op; 1008 newnfsstats.cllockowners++; 1009 } 1010 LIST_INSERT_HEAD(lhp, nlp, nfsl_list); 1011 lp = nlp; 1012 nlp = NULL; 1013 *newonep = 1; 1014 } 1015 1016 /* 1017 * Now, update the byte ranges for locks. 1018 */ 1019 ret = nfscl_updatelock(lp, &nlop, &otherlop, donelocally); 1020 if (!ret) 1021 donelocally = 1; 1022 if (donelocally) { 1023 *donelocallyp = 1; 1024 if (!recovery) 1025 nfscl_clrelease(clp); 1026 } else { 1027 /* 1028 * Serial modifications on the lock owner for multiple threads 1029 * for the same process using a read/write lock. 1030 */ 1031 if (!recovery) 1032 nfscl_lockexcl(&lp->nfsl_rwlock, NFSCLSTATEMUTEXPTR); 1033 } 1034 if (!recovery) 1035 NFSUNLOCKCLSTATE(); 1036 1037 if (nlp) 1038 FREE((caddr_t)nlp, M_NFSCLLOCKOWNER); 1039 if (nlop) 1040 FREE((caddr_t)nlop, M_NFSCLLOCK); 1041 if (otherlop) 1042 FREE((caddr_t)otherlop, M_NFSCLLOCK); 1043 1044 *lpp = lp; 1045 return (0); 1046 } 1047 1048 /* 1049 * Called to unlock a byte range, for LockU. 1050 */ 1051 APPLESTATIC int 1052 nfscl_relbytelock(vnode_t vp, u_int64_t off, u_int64_t len, 1053 __unused struct ucred *cred, NFSPROC_T *p, int callcnt, 1054 struct nfsclclient *clp, struct nfscllockowner **lpp, int *dorpcp) 1055 { 1056 struct nfscllockowner *lp; 1057 struct nfsclowner *owp; 1058 struct nfsclopen *op; 1059 struct nfscllock *nlop, *other_lop = NULL; 1060 struct nfscldeleg *dp; 1061 struct nfsnode *np; 1062 u_int8_t own[NFSV4CL_LOCKNAMELEN]; 1063 int ret = 0, fnd; 1064 1065 np = VTONFS(vp); 1066 *lpp = NULL; 1067 *dorpcp = 0; 1068 1069 /* 1070 * Might need these, so MALLOC them now, to 1071 * avoid a tsleep() in MALLOC later. 1072 */ 1073 MALLOC(nlop, struct nfscllock *, 1074 sizeof (struct nfscllock), M_NFSCLLOCK, M_WAITOK); 1075 nlop->nfslo_type = F_UNLCK; 1076 nlop->nfslo_first = off; 1077 if (len == NFS64BITSSET) { 1078 nlop->nfslo_end = NFS64BITSSET; 1079 } else { 1080 nlop->nfslo_end = off + len; 1081 if (nlop->nfslo_end <= nlop->nfslo_first) { 1082 FREE((caddr_t)nlop, M_NFSCLLOCK); 1083 return (NFSERR_INVAL); 1084 } 1085 } 1086 if (callcnt == 0) { 1087 MALLOC(other_lop, struct nfscllock *, 1088 sizeof (struct nfscllock), M_NFSCLLOCK, M_WAITOK); 1089 *other_lop = *nlop; 1090 } 1091 nfscl_filllockowner(p, own); 1092 dp = NULL; 1093 NFSLOCKCLSTATE(); 1094 if (callcnt == 0) 1095 dp = nfscl_finddeleg(clp, np->n_fhp->nfh_fh, 1096 np->n_fhp->nfh_len); 1097 1098 /* 1099 * First, unlock any local regions on a delegation. 1100 */ 1101 if (dp != NULL) { 1102 /* Look for this lockowner. */ 1103 LIST_FOREACH(lp, &dp->nfsdl_lock, nfsl_list) { 1104 if (!NFSBCMP(lp->nfsl_owner, own, 1105 NFSV4CL_LOCKNAMELEN)) 1106 break; 1107 } 1108 if (lp != NULL) 1109 /* Use other_lop, so nlop is still available */ 1110 (void)nfscl_updatelock(lp, &other_lop, NULL, 1); 1111 } 1112 1113 /* 1114 * Now, find a matching open/lockowner that hasn't already been done, 1115 * as marked by nfsl_inprog. 1116 */ 1117 lp = NULL; 1118 fnd = 0; 1119 LIST_FOREACH(owp, &clp->nfsc_owner, nfsow_list) { 1120 LIST_FOREACH(op, &owp->nfsow_open, nfso_list) { 1121 if (op->nfso_fhlen == np->n_fhp->nfh_len && 1122 !NFSBCMP(op->nfso_fh, np->n_fhp->nfh_fh, op->nfso_fhlen)) { 1123 LIST_FOREACH(lp, &op->nfso_lock, nfsl_list) { 1124 if (lp->nfsl_inprog == NULL && 1125 !NFSBCMP(lp->nfsl_owner, own, 1126 NFSV4CL_LOCKNAMELEN)) { 1127 fnd = 1; 1128 break; 1129 } 1130 } 1131 if (fnd) 1132 break; 1133 } 1134 } 1135 if (fnd) 1136 break; 1137 } 1138 1139 if (lp != NULL) { 1140 ret = nfscl_updatelock(lp, &nlop, NULL, 0); 1141 if (ret) 1142 *dorpcp = 1; 1143 /* 1144 * Serial modifications on the lock owner for multiple 1145 * threads for the same process using a read/write lock. 1146 */ 1147 lp->nfsl_inprog = p; 1148 nfscl_lockexcl(&lp->nfsl_rwlock, NFSCLSTATEMUTEXPTR); 1149 *lpp = lp; 1150 } 1151 NFSUNLOCKCLSTATE(); 1152 if (nlop) 1153 FREE((caddr_t)nlop, M_NFSCLLOCK); 1154 if (other_lop) 1155 FREE((caddr_t)other_lop, M_NFSCLLOCK); 1156 return (0); 1157 } 1158 1159 /* 1160 * Release all lockowners marked in progess for this process and file. 1161 */ 1162 APPLESTATIC void 1163 nfscl_releasealllocks(struct nfsclclient *clp, vnode_t vp, NFSPROC_T *p) 1164 { 1165 struct nfsclowner *owp; 1166 struct nfsclopen *op; 1167 struct nfscllockowner *lp; 1168 struct nfsnode *np; 1169 u_int8_t own[NFSV4CL_LOCKNAMELEN]; 1170 1171 np = VTONFS(vp); 1172 nfscl_filllockowner(p, own); 1173 NFSLOCKCLSTATE(); 1174 LIST_FOREACH(owp, &clp->nfsc_owner, nfsow_list) { 1175 LIST_FOREACH(op, &owp->nfsow_open, nfso_list) { 1176 if (op->nfso_fhlen == np->n_fhp->nfh_len && 1177 !NFSBCMP(op->nfso_fh, np->n_fhp->nfh_fh, op->nfso_fhlen)) { 1178 LIST_FOREACH(lp, &op->nfso_lock, nfsl_list) { 1179 if (lp->nfsl_inprog == p && 1180 !NFSBCMP(lp->nfsl_owner, own, 1181 NFSV4CL_LOCKNAMELEN)) { 1182 lp->nfsl_inprog = NULL; 1183 nfscl_lockunlock(&lp->nfsl_rwlock); 1184 } 1185 } 1186 } 1187 } 1188 } 1189 nfscl_clrelease(clp); 1190 NFSUNLOCKCLSTATE(); 1191 } 1192 1193 /* 1194 * Called to find out if any bytes within the byte range specified are 1195 * write locked by the calling process. Used to determine if flushing 1196 * is required before a LockU. 1197 * If in doubt, return 1, so the flush will occur. 1198 */ 1199 APPLESTATIC int 1200 nfscl_checkwritelocked(vnode_t vp, struct flock *fl, 1201 struct ucred *cred, NFSPROC_T *p) 1202 { 1203 struct nfsclowner *owp; 1204 struct nfscllockowner *lp; 1205 struct nfsclopen *op; 1206 struct nfsclclient *clp; 1207 struct nfscllock *lop; 1208 struct nfscldeleg *dp; 1209 struct nfsnode *np; 1210 u_int64_t off, end; 1211 u_int8_t own[NFSV4CL_LOCKNAMELEN]; 1212 int error = 0; 1213 1214 np = VTONFS(vp); 1215 switch (fl->l_whence) { 1216 case SEEK_SET: 1217 case SEEK_CUR: 1218 /* 1219 * Caller is responsible for adding any necessary offset 1220 * when SEEK_CUR is used. 1221 */ 1222 off = fl->l_start; 1223 break; 1224 case SEEK_END: 1225 off = np->n_size + fl->l_start; 1226 break; 1227 default: 1228 return (1); 1229 }; 1230 if (fl->l_len != 0) { 1231 end = off + fl->l_len; 1232 if (end < off) 1233 return (1); 1234 } else { 1235 end = NFS64BITSSET; 1236 } 1237 1238 error = nfscl_getcl(vp, cred, p, &clp); 1239 if (error) 1240 return (1); 1241 nfscl_filllockowner(p, own); 1242 NFSLOCKCLSTATE(); 1243 1244 /* 1245 * First check the delegation locks. 1246 */ 1247 dp = nfscl_finddeleg(clp, np->n_fhp->nfh_fh, np->n_fhp->nfh_len); 1248 if (dp != NULL) { 1249 LIST_FOREACH(lp, &dp->nfsdl_lock, nfsl_list) { 1250 if (!NFSBCMP(lp->nfsl_owner, own, 1251 NFSV4CL_LOCKNAMELEN)) 1252 break; 1253 } 1254 if (lp != NULL) { 1255 LIST_FOREACH(lop, &lp->nfsl_lock, nfslo_list) { 1256 if (lop->nfslo_first >= end) 1257 break; 1258 if (lop->nfslo_end <= off) 1259 continue; 1260 if (lop->nfslo_type == F_WRLCK) { 1261 nfscl_clrelease(clp); 1262 NFSUNLOCKCLSTATE(); 1263 return (1); 1264 } 1265 } 1266 } 1267 } 1268 1269 /* 1270 * Now, check state against the server. 1271 */ 1272 LIST_FOREACH(owp, &clp->nfsc_owner, nfsow_list) { 1273 LIST_FOREACH(op, &owp->nfsow_open, nfso_list) { 1274 if (op->nfso_fhlen == np->n_fhp->nfh_len && 1275 !NFSBCMP(op->nfso_fh, np->n_fhp->nfh_fh, op->nfso_fhlen)) { 1276 LIST_FOREACH(lp, &op->nfso_lock, nfsl_list) { 1277 if (!NFSBCMP(lp->nfsl_owner, own, 1278 NFSV4CL_LOCKNAMELEN)) 1279 break; 1280 } 1281 if (lp != NULL) { 1282 LIST_FOREACH(lop, &lp->nfsl_lock, nfslo_list) { 1283 if (lop->nfslo_first >= end) 1284 break; 1285 if (lop->nfslo_end <= off) 1286 continue; 1287 if (lop->nfslo_type == F_WRLCK) { 1288 nfscl_clrelease(clp); 1289 NFSUNLOCKCLSTATE(); 1290 return (1); 1291 } 1292 } 1293 } 1294 } 1295 } 1296 } 1297 nfscl_clrelease(clp); 1298 NFSUNLOCKCLSTATE(); 1299 return (0); 1300 } 1301 1302 /* 1303 * Release a byte range lock owner structure. 1304 */ 1305 APPLESTATIC void 1306 nfscl_lockrelease(struct nfscllockowner *lp, int error, int candelete) 1307 { 1308 struct nfsclclient *clp; 1309 1310 if (lp == NULL) 1311 return; 1312 NFSLOCKCLSTATE(); 1313 clp = lp->nfsl_open->nfso_own->nfsow_clp; 1314 if (error != 0 && candelete && 1315 (lp->nfsl_rwlock.nfslock_lock & NFSV4LOCK_WANTED) == 0) 1316 nfscl_freelockowner(lp, 0); 1317 else 1318 nfscl_lockunlock(&lp->nfsl_rwlock); 1319 nfscl_clrelease(clp); 1320 NFSUNLOCKCLSTATE(); 1321 } 1322 1323 /* 1324 * Free up an open structure and any associated byte range lock structures. 1325 */ 1326 APPLESTATIC void 1327 nfscl_freeopen(struct nfsclopen *op, int local) 1328 { 1329 1330 LIST_REMOVE(op, nfso_list); 1331 nfscl_freealllocks(&op->nfso_lock, local); 1332 FREE((caddr_t)op, M_NFSCLOPEN); 1333 if (local) 1334 newnfsstats.cllocalopens--; 1335 else 1336 newnfsstats.clopens--; 1337 } 1338 1339 /* 1340 * Free up all lock owners and associated locks. 1341 */ 1342 static void 1343 nfscl_freealllocks(struct nfscllockownerhead *lhp, int local) 1344 { 1345 struct nfscllockowner *lp, *nlp; 1346 1347 LIST_FOREACH_SAFE(lp, lhp, nfsl_list, nlp) { 1348 if ((lp->nfsl_rwlock.nfslock_lock & NFSV4LOCK_WANTED)) 1349 panic("nfscllckw"); 1350 nfscl_freelockowner(lp, local); 1351 } 1352 } 1353 1354 /* 1355 * Called for an Open when NFSERR_EXPIRED is received from the server. 1356 * If there are no byte range locks nor a Share Deny lost, try to do a 1357 * fresh Open. Otherwise, free the open. 1358 */ 1359 static int 1360 nfscl_expireopen(struct nfsclclient *clp, struct nfsclopen *op, 1361 struct nfsmount *nmp, struct ucred *cred, NFSPROC_T *p) 1362 { 1363 struct nfscllockowner *lp; 1364 struct nfscldeleg *dp; 1365 int mustdelete = 0, error; 1366 1367 /* 1368 * Look for any byte range lock(s). 1369 */ 1370 LIST_FOREACH(lp, &op->nfso_lock, nfsl_list) { 1371 if (!LIST_EMPTY(&lp->nfsl_lock)) { 1372 mustdelete = 1; 1373 break; 1374 } 1375 } 1376 1377 /* 1378 * If no byte range lock(s) nor a Share deny, try to re-open. 1379 */ 1380 if (!mustdelete && (op->nfso_mode & NFSLCK_DENYBITS) == 0) { 1381 newnfs_copycred(&op->nfso_cred, cred); 1382 dp = NULL; 1383 error = nfsrpc_reopen(nmp, op->nfso_fh, 1384 op->nfso_fhlen, op->nfso_mode, op, &dp, cred, p); 1385 if (error) { 1386 mustdelete = 1; 1387 if (dp != NULL) { 1388 FREE((caddr_t)dp, M_NFSCLDELEG); 1389 dp = NULL; 1390 } 1391 } 1392 if (dp != NULL) 1393 nfscl_deleg(nmp->nm_mountp, clp, op->nfso_fh, 1394 op->nfso_fhlen, cred, p, &dp); 1395 } 1396 1397 /* 1398 * If a byte range lock or Share deny or couldn't re-open, free it. 1399 */ 1400 if (mustdelete) 1401 nfscl_freeopen(op, 0); 1402 return (mustdelete); 1403 } 1404 1405 /* 1406 * Free up an open owner structure. 1407 */ 1408 static void 1409 nfscl_freeopenowner(struct nfsclowner *owp, int local) 1410 { 1411 1412 LIST_REMOVE(owp, nfsow_list); 1413 FREE((caddr_t)owp, M_NFSCLOWNER); 1414 if (local) 1415 newnfsstats.cllocalopenowners--; 1416 else 1417 newnfsstats.clopenowners--; 1418 } 1419 1420 /* 1421 * Free up a byte range lock owner structure. 1422 */ 1423 static void 1424 nfscl_freelockowner(struct nfscllockowner *lp, int local) 1425 { 1426 struct nfscllock *lop, *nlop; 1427 1428 LIST_REMOVE(lp, nfsl_list); 1429 LIST_FOREACH_SAFE(lop, &lp->nfsl_lock, nfslo_list, nlop) { 1430 nfscl_freelock(lop, local); 1431 } 1432 FREE((caddr_t)lp, M_NFSCLLOCKOWNER); 1433 if (local) 1434 newnfsstats.cllocallockowners--; 1435 else 1436 newnfsstats.cllockowners--; 1437 } 1438 1439 /* 1440 * Free up a byte range lock structure. 1441 */ 1442 APPLESTATIC void 1443 nfscl_freelock(struct nfscllock *lop, int local) 1444 { 1445 1446 LIST_REMOVE(lop, nfslo_list); 1447 FREE((caddr_t)lop, M_NFSCLLOCK); 1448 if (local) 1449 newnfsstats.cllocallocks--; 1450 else 1451 newnfsstats.cllocks--; 1452 } 1453 1454 /* 1455 * Clean out the state related to a delegation. 1456 */ 1457 static void 1458 nfscl_cleandeleg(struct nfscldeleg *dp) 1459 { 1460 struct nfsclowner *owp, *nowp; 1461 struct nfsclopen *op; 1462 1463 LIST_FOREACH_SAFE(owp, &dp->nfsdl_owner, nfsow_list, nowp) { 1464 op = LIST_FIRST(&owp->nfsow_open); 1465 if (op != NULL) { 1466 if (LIST_NEXT(op, nfso_list) != NULL) 1467 panic("nfscleandel"); 1468 nfscl_freeopen(op, 1); 1469 } 1470 nfscl_freeopenowner(owp, 1); 1471 } 1472 nfscl_freealllocks(&dp->nfsdl_lock, 1); 1473 } 1474 1475 /* 1476 * Free a delegation. 1477 */ 1478 static void 1479 nfscl_freedeleg(struct nfscldeleghead *hdp, struct nfscldeleg *dp) 1480 { 1481 1482 TAILQ_REMOVE(hdp, dp, nfsdl_list); 1483 LIST_REMOVE(dp, nfsdl_hash); 1484 FREE((caddr_t)dp, M_NFSCLDELEG); 1485 newnfsstats.cldelegates--; 1486 nfscl_delegcnt--; 1487 } 1488 1489 /* 1490 * Free up all state related to this client structure. 1491 */ 1492 static void 1493 nfscl_cleanclient(struct nfsclclient *clp) 1494 { 1495 struct nfsclowner *owp, *nowp; 1496 struct nfsclopen *op, *nop; 1497 struct nfscllockowner *lp, *nlp; 1498 1499 1500 /* get rid of defunct lockowners */ 1501 LIST_FOREACH_SAFE(lp, &clp->nfsc_defunctlockowner, nfsl_list, nlp) { 1502 nfscl_freelockowner(lp, 0); 1503 } 1504 1505 /* Now, all the OpenOwners, etc. */ 1506 LIST_FOREACH_SAFE(owp, &clp->nfsc_owner, nfsow_list, nowp) { 1507 LIST_FOREACH_SAFE(op, &owp->nfsow_open, nfso_list, nop) { 1508 nfscl_freeopen(op, 0); 1509 } 1510 nfscl_freeopenowner(owp, 0); 1511 } 1512 } 1513 1514 /* 1515 * Called when an NFSERR_EXPIRED is received from the server. 1516 */ 1517 static void 1518 nfscl_expireclient(struct nfsclclient *clp, struct nfsmount *nmp, 1519 struct ucred *cred, NFSPROC_T *p) 1520 { 1521 struct nfsclowner *owp, *nowp, *towp; 1522 struct nfsclopen *op, *nop, *top; 1523 struct nfscldeleg *dp, *ndp; 1524 int ret, printed = 0; 1525 1526 /* 1527 * First, merge locally issued Opens into the list for the server. 1528 */ 1529 dp = TAILQ_FIRST(&clp->nfsc_deleg); 1530 while (dp != NULL) { 1531 ndp = TAILQ_NEXT(dp, nfsdl_list); 1532 owp = LIST_FIRST(&dp->nfsdl_owner); 1533 while (owp != NULL) { 1534 nowp = LIST_NEXT(owp, nfsow_list); 1535 op = LIST_FIRST(&owp->nfsow_open); 1536 if (op != NULL) { 1537 if (LIST_NEXT(op, nfso_list) != NULL) 1538 panic("nfsclexp"); 1539 LIST_FOREACH(towp, &clp->nfsc_owner, nfsow_list) { 1540 if (!NFSBCMP(towp->nfsow_owner, owp->nfsow_owner, 1541 NFSV4CL_LOCKNAMELEN)) 1542 break; 1543 } 1544 if (towp != NULL) { 1545 /* Merge opens in */ 1546 LIST_FOREACH(top, &towp->nfsow_open, nfso_list) { 1547 if (top->nfso_fhlen == op->nfso_fhlen && 1548 !NFSBCMP(top->nfso_fh, op->nfso_fh, 1549 op->nfso_fhlen)) { 1550 top->nfso_mode |= op->nfso_mode; 1551 top->nfso_opencnt += op->nfso_opencnt; 1552 break; 1553 } 1554 } 1555 if (top == NULL) { 1556 /* Just add the open to the owner list */ 1557 LIST_REMOVE(op, nfso_list); 1558 op->nfso_own = towp; 1559 LIST_INSERT_HEAD(&towp->nfsow_open, op, nfso_list); 1560 newnfsstats.cllocalopens--; 1561 newnfsstats.clopens++; 1562 } 1563 } else { 1564 /* Just add the openowner to the client list */ 1565 LIST_REMOVE(owp, nfsow_list); 1566 owp->nfsow_clp = clp; 1567 LIST_INSERT_HEAD(&clp->nfsc_owner, owp, nfsow_list); 1568 newnfsstats.cllocalopenowners--; 1569 newnfsstats.clopenowners++; 1570 newnfsstats.cllocalopens--; 1571 newnfsstats.clopens++; 1572 } 1573 } 1574 owp = nowp; 1575 } 1576 if (!printed && !LIST_EMPTY(&dp->nfsdl_lock)) { 1577 printed = 1; 1578 printf("nfsv4 expired locks lost\n"); 1579 } 1580 nfscl_cleandeleg(dp); 1581 nfscl_freedeleg(&clp->nfsc_deleg, dp); 1582 dp = ndp; 1583 } 1584 if (!TAILQ_EMPTY(&clp->nfsc_deleg)) 1585 panic("nfsclexp"); 1586 1587 /* 1588 * Now, try and reopen against the server. 1589 */ 1590 LIST_FOREACH_SAFE(owp, &clp->nfsc_owner, nfsow_list, nowp) { 1591 owp->nfsow_seqid = 0; 1592 LIST_FOREACH_SAFE(op, &owp->nfsow_open, nfso_list, nop) { 1593 ret = nfscl_expireopen(clp, op, nmp, cred, p); 1594 if (ret && !printed) { 1595 printed = 1; 1596 printf("nfsv4 expired locks lost\n"); 1597 } 1598 } 1599 if (LIST_EMPTY(&owp->nfsow_open)) 1600 nfscl_freeopenowner(owp, 0); 1601 } 1602 } 1603 1604 #ifndef __FreeBSD__ 1605 /* 1606 * Called from exit() upon process termination. 1607 */ 1608 APPLESTATIC void 1609 nfscl_cleanup(NFSPROC_T *p) 1610 { 1611 struct nfsclclient *clp; 1612 u_int8_t own[NFSV4CL_LOCKNAMELEN]; 1613 1614 if (!nfscl_inited) 1615 return; 1616 nfscl_filllockowner(p, own); 1617 1618 NFSLOCKCLSTATE(); 1619 /* 1620 * Loop through all the clientids, looking for the OpenOwners. 1621 */ 1622 LIST_FOREACH(clp, &nfsclhead, nfsc_list) 1623 nfscl_cleanup_common(clp, own); 1624 NFSUNLOCKCLSTATE(); 1625 } 1626 #endif /* !__FreeBSD__ */ 1627 1628 /* 1629 * Common code used by nfscl_cleanup() and nfscl_cleanupkext(). 1630 * Must be called with CLSTATE lock held. 1631 */ 1632 static void 1633 nfscl_cleanup_common(struct nfsclclient *clp, u_int8_t *own) 1634 { 1635 struct nfsclowner *owp, *nowp; 1636 struct nfsclopen *op; 1637 struct nfscllockowner *lp, *nlp; 1638 struct nfscldeleg *dp; 1639 1640 /* First, get rid of local locks on delegations. */ 1641 TAILQ_FOREACH(dp, &clp->nfsc_deleg, nfsdl_list) { 1642 LIST_FOREACH_SAFE(lp, &dp->nfsdl_lock, nfsl_list, nlp) { 1643 if (!NFSBCMP(lp->nfsl_owner, own, NFSV4CL_LOCKNAMELEN)) { 1644 if ((lp->nfsl_rwlock.nfslock_lock & NFSV4LOCK_WANTED)) 1645 panic("nfscllckw"); 1646 nfscl_freelockowner(lp, 1); 1647 } 1648 } 1649 } 1650 owp = LIST_FIRST(&clp->nfsc_owner); 1651 while (owp != NULL) { 1652 nowp = LIST_NEXT(owp, nfsow_list); 1653 if (!NFSBCMP(owp->nfsow_owner, own, 1654 NFSV4CL_LOCKNAMELEN)) { 1655 /* 1656 * If there are children that haven't closed the 1657 * file descriptors yet, the opens will still be 1658 * here. For that case, let the renew thread clear 1659 * out the OpenOwner later. 1660 */ 1661 if (LIST_EMPTY(&owp->nfsow_open)) 1662 nfscl_freeopenowner(owp, 0); 1663 else 1664 owp->nfsow_defunct = 1; 1665 } else { 1666 /* look for lockowners on other opens */ 1667 LIST_FOREACH(op, &owp->nfsow_open, nfso_list) { 1668 LIST_FOREACH(lp, &op->nfso_lock, nfsl_list) { 1669 if (!NFSBCMP(lp->nfsl_owner, own, 1670 NFSV4CL_LOCKNAMELEN)) 1671 lp->nfsl_defunct = 1; 1672 } 1673 } 1674 } 1675 owp = nowp; 1676 } 1677 1678 /* and check the defunct list */ 1679 LIST_FOREACH(lp, &clp->nfsc_defunctlockowner, nfsl_list) { 1680 if (!NFSBCMP(lp->nfsl_owner, own, NFSV4CL_LOCKNAMELEN)) 1681 lp->nfsl_defunct = 1; 1682 } 1683 } 1684 1685 #if defined(APPLEKEXT) || defined(__FreeBSD__) 1686 /* 1687 * Simulate the call nfscl_cleanup() by looking for open owners associated 1688 * with processes that no longer exist, since a call to nfscl_cleanup() 1689 * can't be patched into exit(). 1690 */ 1691 static void 1692 nfscl_cleanupkext(struct nfsclclient *clp) 1693 { 1694 struct nfsclowner *owp, *nowp; 1695 struct nfscllockowner *lp; 1696 1697 NFSPROCLISTLOCK(); 1698 NFSLOCKCLSTATE(); 1699 LIST_FOREACH_SAFE(owp, &clp->nfsc_owner, nfsow_list, nowp) { 1700 if (nfscl_procdoesntexist(owp->nfsow_owner)) 1701 nfscl_cleanup_common(clp, owp->nfsow_owner); 1702 } 1703 1704 /* and check the defunct list */ 1705 LIST_FOREACH(lp, &clp->nfsc_defunctlockowner, nfsl_list) { 1706 if (nfscl_procdoesntexist(lp->nfsl_owner)) 1707 lp->nfsl_defunct = 1; 1708 } 1709 NFSUNLOCKCLSTATE(); 1710 NFSPROCLISTUNLOCK(); 1711 } 1712 #endif /* APPLEKEXT || __FreeBSD__ */ 1713 1714 /* 1715 * Called from nfs umount to free up the clientid. 1716 */ 1717 APPLESTATIC void 1718 nfscl_umount(struct nfsmount *nmp, NFSPROC_T *p) 1719 { 1720 struct nfsclclient *clp; 1721 struct ucred *cred; 1722 int igotlock; 1723 1724 clp = nmp->nm_clp; 1725 if (clp != NULL) { 1726 if ((clp->nfsc_flags & NFSCLFLAGS_INITED) == 0) 1727 panic("nfscl umount"); 1728 1729 /* 1730 * First, handshake with the nfscl renew thread, to terminate 1731 * it. 1732 */ 1733 clp->nfsc_flags |= NFSCLFLAGS_UMOUNT; 1734 while (clp->nfsc_flags & NFSCLFLAGS_HASTHREAD) 1735 (void) tsleep((caddr_t)clp, PWAIT, "nfsclumnt", hz); 1736 1737 NFSLOCKCLSTATE(); 1738 do { 1739 igotlock = nfsv4_lock(&clp->nfsc_lock, 1, NULL, 1740 NFSCLSTATEMUTEXPTR); 1741 } while (!igotlock); 1742 NFSUNLOCKCLSTATE(); 1743 1744 /* 1745 * Free up all the state. It will expire on the server, but 1746 * maybe we should do a SetClientId/SetClientIdConfirm so 1747 * the server throws it away? 1748 */ 1749 LIST_REMOVE(clp, nfsc_list); 1750 nfscl_delegreturnall(clp, p); 1751 cred = newnfs_getcred(); 1752 (void) nfsrpc_setclient(nmp, clp, cred, p); 1753 nfscl_cleanclient(clp); 1754 nmp->nm_clp = NULL; 1755 NFSFREECRED(cred); 1756 FREE((caddr_t)clp, M_NFSCLCLIENT); 1757 } 1758 1759 } 1760 1761 /* 1762 * This function is called when a server replies with NFSERR_STALECLIENTID 1763 * or NFSERR_STALESTATEID. It traverses the clientid lists, doing Opens 1764 * and Locks with reclaim. If these fail, it deletes the corresponding state. 1765 */ 1766 static void 1767 nfscl_recover(struct nfsclclient *clp, struct ucred *cred, NFSPROC_T *p) 1768 { 1769 struct nfsclowner *owp, *nowp; 1770 struct nfsclopen *op, *nop; 1771 struct nfscllockowner *lp, *nlp; 1772 struct nfscllock *lop, *nlop; 1773 struct nfscldeleg *dp, *ndp, *tdp; 1774 struct nfsmount *nmp; 1775 struct ucred *tcred; 1776 struct nfsclopenhead extra_open; 1777 struct nfscldeleghead extra_deleg; 1778 struct nfsreq *rep; 1779 u_int64_t len; 1780 u_int32_t delegtype = NFSV4OPEN_DELEGATEWRITE, mode; 1781 int igotlock = 0, error, trycnt, firstlock, s; 1782 1783 /* 1784 * First, lock the client structure, so everyone else will 1785 * block when trying to use state. 1786 */ 1787 NFSLOCKCLSTATE(); 1788 clp->nfsc_flags |= NFSCLFLAGS_RECVRINPROG; 1789 do { 1790 igotlock = nfsv4_lock(&clp->nfsc_lock, 1, NULL, 1791 NFSCLSTATEMUTEXPTR); 1792 } while (!igotlock); 1793 NFSUNLOCKCLSTATE(); 1794 1795 nmp = clp->nfsc_nmp; 1796 if (nmp == NULL) 1797 panic("nfscl recover"); 1798 trycnt = 5; 1799 do { 1800 error = nfsrpc_setclient(nmp, clp, cred, p); 1801 } while ((error == NFSERR_STALECLIENTID || 1802 error == NFSERR_STALEDONTRECOVER) && --trycnt > 0); 1803 if (error) { 1804 nfscl_cleanclient(clp); 1805 NFSLOCKCLSTATE(); 1806 clp->nfsc_flags &= ~(NFSCLFLAGS_HASCLIENTID | 1807 NFSCLFLAGS_RECOVER | NFSCLFLAGS_RECVRINPROG); 1808 wakeup(&clp->nfsc_flags); 1809 nfsv4_unlock(&clp->nfsc_lock, 0); 1810 NFSUNLOCKCLSTATE(); 1811 return; 1812 } 1813 clp->nfsc_flags |= NFSCLFLAGS_HASCLIENTID; 1814 clp->nfsc_flags &= ~NFSCLFLAGS_RECOVER; 1815 1816 /* 1817 * Mark requests already queued on the server, so that they don't 1818 * initiate another recovery cycle. Any requests already in the 1819 * queue that handle state information will have the old stale 1820 * clientid/stateid and will get a NFSERR_STALESTATEID or 1821 * NFSERR_STALECLIENTID reply from the server. This will be 1822 * translated to NFSERR_STALEDONTRECOVER when R_DONTRECOVER is set. 1823 */ 1824 s = splsoftclock(); 1825 NFSLOCKREQ(); 1826 TAILQ_FOREACH(rep, &nfsd_reqq, r_chain) { 1827 if (rep->r_nmp == nmp) 1828 rep->r_flags |= R_DONTRECOVER; 1829 } 1830 NFSUNLOCKREQ(); 1831 splx(s); 1832 1833 /* get rid of defunct lockowners */ 1834 LIST_FOREACH_SAFE(lp, &clp->nfsc_defunctlockowner, nfsl_list, nlp) { 1835 nfscl_freelockowner(lp, 0); 1836 } 1837 1838 /* 1839 * Now, mark all delegations "need reclaim". 1840 */ 1841 TAILQ_FOREACH(dp, &clp->nfsc_deleg, nfsdl_list) 1842 dp->nfsdl_flags |= NFSCLDL_NEEDRECLAIM; 1843 1844 TAILQ_INIT(&extra_deleg); 1845 LIST_INIT(&extra_open); 1846 /* 1847 * Now traverse the state lists, doing Open and Lock Reclaims. 1848 */ 1849 tcred = newnfs_getcred(); 1850 owp = LIST_FIRST(&clp->nfsc_owner); 1851 while (owp != NULL) { 1852 nowp = LIST_NEXT(owp, nfsow_list); 1853 owp->nfsow_seqid = 0; 1854 op = LIST_FIRST(&owp->nfsow_open); 1855 while (op != NULL) { 1856 nop = LIST_NEXT(op, nfso_list); 1857 if (error != NFSERR_NOGRACE) { 1858 /* Search for a delegation to reclaim with the open */ 1859 TAILQ_FOREACH(dp, &clp->nfsc_deleg, nfsdl_list) { 1860 if (!(dp->nfsdl_flags & NFSCLDL_NEEDRECLAIM)) 1861 continue; 1862 if ((dp->nfsdl_flags & NFSCLDL_WRITE)) { 1863 mode = NFSV4OPEN_ACCESSWRITE; 1864 delegtype = NFSV4OPEN_DELEGATEWRITE; 1865 } else { 1866 mode = NFSV4OPEN_ACCESSREAD; 1867 delegtype = NFSV4OPEN_DELEGATEREAD; 1868 } 1869 if ((op->nfso_mode & mode) == mode && 1870 op->nfso_fhlen == dp->nfsdl_fhlen && 1871 !NFSBCMP(op->nfso_fh, dp->nfsdl_fh, op->nfso_fhlen)) 1872 break; 1873 } 1874 ndp = dp; 1875 if (dp == NULL) 1876 delegtype = NFSV4OPEN_DELEGATENONE; 1877 newnfs_copycred(&op->nfso_cred, tcred); 1878 error = nfscl_tryopen(nmp, NULL, op->nfso_fh, 1879 op->nfso_fhlen, op->nfso_fh, op->nfso_fhlen, 1880 op->nfso_mode, op, NULL, 0, &ndp, 1, delegtype, 1881 tcred, p); 1882 if (!error) { 1883 /* Handle any replied delegation */ 1884 if (ndp != NULL && ((ndp->nfsdl_flags & NFSCLDL_WRITE) 1885 || NFSMNT_RDONLY(nmp->nm_mountp))) { 1886 if ((ndp->nfsdl_flags & NFSCLDL_WRITE)) 1887 mode = NFSV4OPEN_ACCESSWRITE; 1888 else 1889 mode = NFSV4OPEN_ACCESSREAD; 1890 TAILQ_FOREACH(dp, &clp->nfsc_deleg, nfsdl_list) { 1891 if (!(dp->nfsdl_flags & NFSCLDL_NEEDRECLAIM)) 1892 continue; 1893 if ((op->nfso_mode & mode) == mode && 1894 op->nfso_fhlen == dp->nfsdl_fhlen && 1895 !NFSBCMP(op->nfso_fh, dp->nfsdl_fh, 1896 op->nfso_fhlen)) { 1897 dp->nfsdl_stateid = ndp->nfsdl_stateid; 1898 dp->nfsdl_sizelimit = ndp->nfsdl_sizelimit; 1899 dp->nfsdl_ace = ndp->nfsdl_ace; 1900 dp->nfsdl_change = ndp->nfsdl_change; 1901 dp->nfsdl_flags &= ~NFSCLDL_NEEDRECLAIM; 1902 if ((ndp->nfsdl_flags & NFSCLDL_RECALL)) 1903 dp->nfsdl_flags |= NFSCLDL_RECALL; 1904 FREE((caddr_t)ndp, M_NFSCLDELEG); 1905 ndp = NULL; 1906 break; 1907 } 1908 } 1909 } 1910 if (ndp != NULL) 1911 TAILQ_INSERT_HEAD(&extra_deleg, ndp, nfsdl_list); 1912 1913 /* and reclaim all byte range locks */ 1914 lp = LIST_FIRST(&op->nfso_lock); 1915 while (lp != NULL) { 1916 nlp = LIST_NEXT(lp, nfsl_list); 1917 lp->nfsl_seqid = 0; 1918 firstlock = 1; 1919 lop = LIST_FIRST(&lp->nfsl_lock); 1920 while (lop != NULL) { 1921 nlop = LIST_NEXT(lop, nfslo_list); 1922 if (lop->nfslo_end == NFS64BITSSET) 1923 len = NFS64BITSSET; 1924 else 1925 len = lop->nfslo_end - lop->nfslo_first; 1926 if (error != NFSERR_NOGRACE) 1927 error = nfscl_trylock(nmp, NULL, 1928 op->nfso_fh, op->nfso_fhlen, lp, 1929 firstlock, 1, lop->nfslo_first, len, 1930 lop->nfslo_type, tcred, p); 1931 if (error != 0) 1932 nfscl_freelock(lop, 0); 1933 else 1934 firstlock = 0; 1935 lop = nlop; 1936 } 1937 /* If no locks, but a lockowner, just delete it. */ 1938 if (LIST_EMPTY(&lp->nfsl_lock)) 1939 nfscl_freelockowner(lp, 0); 1940 lp = nlp; 1941 } 1942 } else { 1943 nfscl_freeopen(op, 0); 1944 } 1945 } 1946 op = nop; 1947 } 1948 owp = nowp; 1949 } 1950 1951 /* 1952 * Now, try and get any delegations not yet reclaimed by cobbling 1953 * to-gether an appropriate open. 1954 */ 1955 nowp = NULL; 1956 dp = TAILQ_FIRST(&clp->nfsc_deleg); 1957 while (dp != NULL) { 1958 ndp = TAILQ_NEXT(dp, nfsdl_list); 1959 if ((dp->nfsdl_flags & NFSCLDL_NEEDRECLAIM)) { 1960 if (nowp == NULL) { 1961 MALLOC(nowp, struct nfsclowner *, 1962 sizeof (struct nfsclowner), M_NFSCLOWNER, M_WAITOK); 1963 /* 1964 * Name must be as long an largest possible 1965 * NFSV4CL_LOCKNAMELEN. 12 for now. 1966 */ 1967 NFSBCOPY("RECLAIMDELEG", nowp->nfsow_owner, 1968 NFSV4CL_LOCKNAMELEN); 1969 LIST_INIT(&nowp->nfsow_open); 1970 nowp->nfsow_clp = clp; 1971 nowp->nfsow_seqid = 0; 1972 nowp->nfsow_defunct = 0; 1973 nfscl_lockinit(&nowp->nfsow_rwlock); 1974 } 1975 nop = NULL; 1976 if (error != NFSERR_NOGRACE) { 1977 MALLOC(nop, struct nfsclopen *, sizeof (struct nfsclopen) + 1978 dp->nfsdl_fhlen - 1, M_NFSCLOPEN, M_WAITOK); 1979 nop->nfso_own = nowp; 1980 if ((dp->nfsdl_flags & NFSCLDL_WRITE)) { 1981 nop->nfso_mode = NFSV4OPEN_ACCESSWRITE; 1982 delegtype = NFSV4OPEN_DELEGATEWRITE; 1983 } else { 1984 nop->nfso_mode = NFSV4OPEN_ACCESSREAD; 1985 delegtype = NFSV4OPEN_DELEGATEREAD; 1986 } 1987 nop->nfso_opencnt = 0; 1988 nop->nfso_posixlock = 1; 1989 nop->nfso_fhlen = dp->nfsdl_fhlen; 1990 NFSBCOPY(dp->nfsdl_fh, nop->nfso_fh, dp->nfsdl_fhlen); 1991 LIST_INIT(&nop->nfso_lock); 1992 nop->nfso_stateid.seqid = 0; 1993 nop->nfso_stateid.other[0] = 0; 1994 nop->nfso_stateid.other[1] = 0; 1995 nop->nfso_stateid.other[2] = 0; 1996 newnfs_copycred(&dp->nfsdl_cred, tcred); 1997 newnfs_copyincred(tcred, &nop->nfso_cred); 1998 tdp = NULL; 1999 error = nfscl_tryopen(nmp, NULL, nop->nfso_fh, 2000 nop->nfso_fhlen, nop->nfso_fh, nop->nfso_fhlen, 2001 nop->nfso_mode, nop, NULL, 0, &tdp, 1, 2002 delegtype, tcred, p); 2003 if (tdp != NULL) { 2004 if ((tdp->nfsdl_flags & NFSCLDL_WRITE)) 2005 mode = NFSV4OPEN_ACCESSWRITE; 2006 else 2007 mode = NFSV4OPEN_ACCESSREAD; 2008 if ((nop->nfso_mode & mode) == mode && 2009 nop->nfso_fhlen == tdp->nfsdl_fhlen && 2010 !NFSBCMP(nop->nfso_fh, tdp->nfsdl_fh, 2011 nop->nfso_fhlen)) { 2012 dp->nfsdl_stateid = tdp->nfsdl_stateid; 2013 dp->nfsdl_sizelimit = tdp->nfsdl_sizelimit; 2014 dp->nfsdl_ace = tdp->nfsdl_ace; 2015 dp->nfsdl_change = tdp->nfsdl_change; 2016 dp->nfsdl_flags &= ~NFSCLDL_NEEDRECLAIM; 2017 if ((tdp->nfsdl_flags & NFSCLDL_RECALL)) 2018 dp->nfsdl_flags |= NFSCLDL_RECALL; 2019 FREE((caddr_t)tdp, M_NFSCLDELEG); 2020 } else { 2021 TAILQ_INSERT_HEAD(&extra_deleg, tdp, nfsdl_list); 2022 } 2023 } 2024 } 2025 if (error) { 2026 if (nop != NULL) 2027 FREE((caddr_t)nop, M_NFSCLOPEN); 2028 /* 2029 * Couldn't reclaim it, so throw the state 2030 * away. Ouch!! 2031 */ 2032 nfscl_cleandeleg(dp); 2033 nfscl_freedeleg(&clp->nfsc_deleg, dp); 2034 } else { 2035 LIST_INSERT_HEAD(&extra_open, nop, nfso_list); 2036 } 2037 } 2038 dp = ndp; 2039 } 2040 2041 /* 2042 * Now, get rid of extra Opens and Delegations. 2043 */ 2044 LIST_FOREACH_SAFE(op, &extra_open, nfso_list, nop) { 2045 do { 2046 newnfs_copycred(&op->nfso_cred, tcred); 2047 error = nfscl_tryclose(op, tcred, nmp, p); 2048 if (error == NFSERR_GRACE) 2049 (void) nfs_catnap(PZERO, error, "nfsexcls"); 2050 } while (error == NFSERR_GRACE); 2051 LIST_REMOVE(op, nfso_list); 2052 FREE((caddr_t)op, M_NFSCLOPEN); 2053 } 2054 if (nowp != NULL) 2055 FREE((caddr_t)nowp, M_NFSCLOWNER); 2056 2057 TAILQ_FOREACH_SAFE(dp, &extra_deleg, nfsdl_list, ndp) { 2058 do { 2059 newnfs_copycred(&dp->nfsdl_cred, tcred); 2060 error = nfscl_trydelegreturn(dp, tcred, nmp, p); 2061 if (error == NFSERR_GRACE) 2062 (void) nfs_catnap(PZERO, error, "nfsexdlg"); 2063 } while (error == NFSERR_GRACE); 2064 TAILQ_REMOVE(&extra_deleg, dp, nfsdl_list); 2065 FREE((caddr_t)dp, M_NFSCLDELEG); 2066 } 2067 2068 NFSLOCKCLSTATE(); 2069 clp->nfsc_flags &= ~NFSCLFLAGS_RECVRINPROG; 2070 wakeup(&clp->nfsc_flags); 2071 nfsv4_unlock(&clp->nfsc_lock, 0); 2072 NFSUNLOCKCLSTATE(); 2073 NFSFREECRED(tcred); 2074 } 2075 2076 /* 2077 * This function is called when a server replies with NFSERR_EXPIRED. 2078 * It deletes all state for the client and does a fresh SetClientId/confirm. 2079 * XXX Someday it should post a signal to the process(es) that hold the 2080 * state, so they know that lock state has been lost. 2081 */ 2082 APPLESTATIC int 2083 nfscl_hasexpired(struct nfsclclient *clp, u_int32_t clidrev, NFSPROC_T *p) 2084 { 2085 struct nfscllockowner *lp, *nlp; 2086 struct nfsmount *nmp; 2087 struct ucred *cred; 2088 int igotlock = 0, error, trycnt; 2089 2090 /* 2091 * If the clientid has gone away or a new SetClientid has already 2092 * been done, just return ok. 2093 */ 2094 if (clp == NULL || clidrev != clp->nfsc_clientidrev) 2095 return (0); 2096 2097 /* 2098 * First, lock the client structure, so everyone else will 2099 * block when trying to use state. Also, use NFSCLFLAGS_EXPIREIT so 2100 * that only one thread does the work. 2101 */ 2102 NFSLOCKCLSTATE(); 2103 clp->nfsc_flags |= NFSCLFLAGS_EXPIREIT; 2104 do { 2105 igotlock = nfsv4_lock(&clp->nfsc_lock, 1, NULL, 2106 NFSCLSTATEMUTEXPTR); 2107 } while (!igotlock && (clp->nfsc_flags & NFSCLFLAGS_EXPIREIT)); 2108 if ((clp->nfsc_flags & NFSCLFLAGS_EXPIREIT) == 0) { 2109 if (igotlock) 2110 nfsv4_unlock(&clp->nfsc_lock, 0); 2111 NFSUNLOCKCLSTATE(); 2112 return (0); 2113 } 2114 clp->nfsc_flags |= NFSCLFLAGS_RECVRINPROG; 2115 NFSUNLOCKCLSTATE(); 2116 2117 nmp = clp->nfsc_nmp; 2118 if (nmp == NULL) 2119 panic("nfscl expired"); 2120 cred = newnfs_getcred(); 2121 trycnt = 5; 2122 do { 2123 error = nfsrpc_setclient(nmp, clp, cred, p); 2124 } while ((error == NFSERR_STALECLIENTID || 2125 error == NFSERR_STALEDONTRECOVER) && --trycnt > 0); 2126 if (error) { 2127 /* 2128 * Clear out any state. 2129 */ 2130 nfscl_cleanclient(clp); 2131 NFSLOCKCLSTATE(); 2132 clp->nfsc_flags &= ~(NFSCLFLAGS_HASCLIENTID | 2133 NFSCLFLAGS_RECOVER); 2134 } else { 2135 /* get rid of defunct lockowners */ 2136 LIST_FOREACH_SAFE(lp, &clp->nfsc_defunctlockowner, nfsl_list, 2137 nlp) { 2138 nfscl_freelockowner(lp, 0); 2139 } 2140 2141 /* 2142 * Expire the state for the client. 2143 */ 2144 nfscl_expireclient(clp, nmp, cred, p); 2145 NFSLOCKCLSTATE(); 2146 clp->nfsc_flags |= NFSCLFLAGS_HASCLIENTID; 2147 clp->nfsc_flags &= ~NFSCLFLAGS_RECOVER; 2148 } 2149 clp->nfsc_flags &= ~(NFSCLFLAGS_EXPIREIT | NFSCLFLAGS_RECVRINPROG); 2150 wakeup(&clp->nfsc_flags); 2151 nfsv4_unlock(&clp->nfsc_lock, 0); 2152 NFSUNLOCKCLSTATE(); 2153 NFSFREECRED(cred); 2154 return (error); 2155 } 2156 2157 /* 2158 * This function inserts a lock in the list after insert_lop. 2159 */ 2160 static void 2161 nfscl_insertlock(struct nfscllockowner *lp, struct nfscllock *new_lop, 2162 struct nfscllock *insert_lop, int local) 2163 { 2164 2165 if ((struct nfscllockowner *)insert_lop == lp) 2166 LIST_INSERT_HEAD(&lp->nfsl_lock, new_lop, nfslo_list); 2167 else 2168 LIST_INSERT_AFTER(insert_lop, new_lop, nfslo_list); 2169 if (local) 2170 newnfsstats.cllocallocks++; 2171 else 2172 newnfsstats.cllocks++; 2173 } 2174 2175 /* 2176 * This function updates the locking for a lock owner and given file. It 2177 * maintains a list of lock ranges ordered on increasing file offset that 2178 * are NFSCLLOCK_READ or NFSCLLOCK_WRITE and non-overlapping (aka POSIX style). 2179 * It always adds new_lop to the list and sometimes uses the one pointed 2180 * at by other_lopp. 2181 * Returns 1 if the locks were modified, 0 otherwise. 2182 */ 2183 static int 2184 nfscl_updatelock(struct nfscllockowner *lp, struct nfscllock **new_lopp, 2185 struct nfscllock **other_lopp, int local) 2186 { 2187 struct nfscllock *new_lop = *new_lopp; 2188 struct nfscllock *lop, *tlop, *ilop; 2189 struct nfscllock *other_lop; 2190 int unlock = 0, modified = 0; 2191 u_int64_t tmp; 2192 2193 /* 2194 * Work down the list until the lock is merged. 2195 */ 2196 if (new_lop->nfslo_type == F_UNLCK) 2197 unlock = 1; 2198 ilop = (struct nfscllock *)lp; 2199 lop = LIST_FIRST(&lp->nfsl_lock); 2200 while (lop != NULL) { 2201 /* 2202 * Only check locks for this file that aren't before the start of 2203 * new lock's range. 2204 */ 2205 if (lop->nfslo_end >= new_lop->nfslo_first) { 2206 if (new_lop->nfslo_end < lop->nfslo_first) { 2207 /* 2208 * If the new lock ends before the start of the 2209 * current lock's range, no merge, just insert 2210 * the new lock. 2211 */ 2212 break; 2213 } 2214 if (new_lop->nfslo_type == lop->nfslo_type || 2215 (new_lop->nfslo_first <= lop->nfslo_first && 2216 new_lop->nfslo_end >= lop->nfslo_end)) { 2217 /* 2218 * This lock can be absorbed by the new lock/unlock. 2219 * This happens when it covers the entire range 2220 * of the old lock or is contiguous 2221 * with the old lock and is of the same type or an 2222 * unlock. 2223 */ 2224 if (new_lop->nfslo_type != lop->nfslo_type || 2225 new_lop->nfslo_first != lop->nfslo_first || 2226 new_lop->nfslo_end != lop->nfslo_end) 2227 modified = 1; 2228 if (lop->nfslo_first < new_lop->nfslo_first) 2229 new_lop->nfslo_first = lop->nfslo_first; 2230 if (lop->nfslo_end > new_lop->nfslo_end) 2231 new_lop->nfslo_end = lop->nfslo_end; 2232 tlop = lop; 2233 lop = LIST_NEXT(lop, nfslo_list); 2234 nfscl_freelock(tlop, local); 2235 continue; 2236 } 2237 2238 /* 2239 * All these cases are for contiguous locks that are not the 2240 * same type, so they can't be merged. 2241 */ 2242 if (new_lop->nfslo_first <= lop->nfslo_first) { 2243 /* 2244 * This case is where the new lock overlaps with the 2245 * first part of the old lock. Move the start of the 2246 * old lock to just past the end of the new lock. The 2247 * new lock will be inserted in front of the old, since 2248 * ilop hasn't been updated. (We are done now.) 2249 */ 2250 if (lop->nfslo_first != new_lop->nfslo_end) { 2251 lop->nfslo_first = new_lop->nfslo_end; 2252 modified = 1; 2253 } 2254 break; 2255 } 2256 if (new_lop->nfslo_end >= lop->nfslo_end) { 2257 /* 2258 * This case is where the new lock overlaps with the 2259 * end of the old lock's range. Move the old lock's 2260 * end to just before the new lock's first and insert 2261 * the new lock after the old lock. 2262 * Might not be done yet, since the new lock could 2263 * overlap further locks with higher ranges. 2264 */ 2265 if (lop->nfslo_end != new_lop->nfslo_first) { 2266 lop->nfslo_end = new_lop->nfslo_first; 2267 modified = 1; 2268 } 2269 ilop = lop; 2270 lop = LIST_NEXT(lop, nfslo_list); 2271 continue; 2272 } 2273 /* 2274 * The final case is where the new lock's range is in the 2275 * middle of the current lock's and splits the current lock 2276 * up. Use *other_lopp to handle the second part of the 2277 * split old lock range. (We are done now.) 2278 * For unlock, we use new_lop as other_lop and tmp, since 2279 * other_lop and new_lop are the same for this case. 2280 * We noted the unlock case above, so we don't need 2281 * new_lop->nfslo_type any longer. 2282 */ 2283 tmp = new_lop->nfslo_first; 2284 if (unlock) { 2285 other_lop = new_lop; 2286 *new_lopp = NULL; 2287 } else { 2288 other_lop = *other_lopp; 2289 *other_lopp = NULL; 2290 } 2291 other_lop->nfslo_first = new_lop->nfslo_end; 2292 other_lop->nfslo_end = lop->nfslo_end; 2293 other_lop->nfslo_type = lop->nfslo_type; 2294 lop->nfslo_end = tmp; 2295 nfscl_insertlock(lp, other_lop, lop, local); 2296 ilop = lop; 2297 modified = 1; 2298 break; 2299 } 2300 ilop = lop; 2301 lop = LIST_NEXT(lop, nfslo_list); 2302 if (lop == NULL) 2303 break; 2304 } 2305 2306 /* 2307 * Insert the new lock in the list at the appropriate place. 2308 */ 2309 if (!unlock) { 2310 nfscl_insertlock(lp, new_lop, ilop, local); 2311 *new_lopp = NULL; 2312 modified = 1; 2313 } 2314 return (modified); 2315 } 2316 2317 /* 2318 * This function must be run as a kernel thread. 2319 * It does Renew Ops and recovery, when required. 2320 */ 2321 APPLESTATIC void 2322 nfscl_renewthread(struct nfsclclient *clp, NFSPROC_T *p) 2323 { 2324 struct nfsclowner *owp, *nowp; 2325 struct nfsclopen *op; 2326 struct nfscllockowner *lp, *nlp, *olp; 2327 struct nfscldeleghead dh; 2328 struct nfscllockownerhead lh; 2329 struct nfscldeleg *dp, *ndp; 2330 struct ucred *cred; 2331 u_int32_t clidrev; 2332 int error, cbpathdown, islept, igotlock, ret, clearok; 2333 uint32_t recover_done_time = 0; 2334 2335 cred = newnfs_getcred(); 2336 NFSLOCKCLSTATE(); 2337 clp->nfsc_flags |= NFSCLFLAGS_HASTHREAD; 2338 NFSUNLOCKCLSTATE(); 2339 for(;;) { 2340 newnfs_setroot(cred); 2341 cbpathdown = 0; 2342 if (clp->nfsc_flags & NFSCLFLAGS_RECOVER) { 2343 /* 2344 * Only allow one recover within 1/2 of the lease 2345 * duration (nfsc_renew). 2346 */ 2347 if (recover_done_time < NFSD_MONOSEC) { 2348 recover_done_time = NFSD_MONOSEC + 2349 clp->nfsc_renew; 2350 nfscl_recover(clp, cred, p); 2351 } else { 2352 NFSLOCKCLSTATE(); 2353 clp->nfsc_flags &= ~NFSCLFLAGS_RECOVER; 2354 NFSUNLOCKCLSTATE(); 2355 } 2356 } 2357 if (clp->nfsc_expire <= NFSD_MONOSEC && 2358 (clp->nfsc_flags & NFSCLFLAGS_HASCLIENTID)) { 2359 clp->nfsc_expire = NFSD_MONOSEC + clp->nfsc_renew; 2360 clidrev = clp->nfsc_clientidrev; 2361 error = nfsrpc_renew(clp, cred, p); 2362 if (error == NFSERR_CBPATHDOWN) 2363 cbpathdown = 1; 2364 else if (error == NFSERR_STALECLIENTID) { 2365 NFSLOCKCLSTATE(); 2366 clp->nfsc_flags |= NFSCLFLAGS_RECOVER; 2367 NFSUNLOCKCLSTATE(); 2368 } else if (error == NFSERR_EXPIRED) 2369 (void) nfscl_hasexpired(clp, clidrev, p); 2370 } 2371 2372 LIST_INIT(&lh); 2373 TAILQ_INIT(&dh); 2374 NFSLOCKCLSTATE(); 2375 if (cbpathdown) 2376 /* It's a Total Recall! */ 2377 nfscl_totalrecall(clp); 2378 2379 /* 2380 * Now, handle defunct owners. 2381 */ 2382 owp = LIST_FIRST(&clp->nfsc_owner); 2383 while (owp != NULL) { 2384 nowp = LIST_NEXT(owp, nfsow_list); 2385 if (LIST_EMPTY(&owp->nfsow_open)) { 2386 if (owp->nfsow_defunct) 2387 nfscl_freeopenowner(owp, 0); 2388 } else { 2389 LIST_FOREACH(op, &owp->nfsow_open, nfso_list) { 2390 lp = LIST_FIRST(&op->nfso_lock); 2391 while (lp != NULL) { 2392 nlp = LIST_NEXT(lp, nfsl_list); 2393 if (lp->nfsl_defunct && 2394 LIST_EMPTY(&lp->nfsl_lock)) { 2395 LIST_FOREACH(olp, &lh, nfsl_list) { 2396 if (!NFSBCMP(olp->nfsl_owner, 2397 lp->nfsl_owner,NFSV4CL_LOCKNAMELEN)) 2398 break; 2399 } 2400 if (olp == NULL) { 2401 LIST_REMOVE(lp, nfsl_list); 2402 LIST_INSERT_HEAD(&lh, lp, nfsl_list); 2403 } else { 2404 nfscl_freelockowner(lp, 0); 2405 } 2406 } 2407 lp = nlp; 2408 } 2409 } 2410 } 2411 owp = nowp; 2412 } 2413 2414 /* also search the defunct list */ 2415 lp = LIST_FIRST(&clp->nfsc_defunctlockowner); 2416 while (lp != NULL) { 2417 nlp = LIST_NEXT(lp, nfsl_list); 2418 if (lp->nfsl_defunct) { 2419 LIST_FOREACH(olp, &lh, nfsl_list) { 2420 if (!NFSBCMP(olp->nfsl_owner, lp->nfsl_owner, 2421 NFSV4CL_LOCKNAMELEN)) 2422 break; 2423 } 2424 if (olp == NULL) { 2425 LIST_REMOVE(lp, nfsl_list); 2426 LIST_INSERT_HEAD(&lh, lp, nfsl_list); 2427 } else { 2428 nfscl_freelockowner(lp, 0); 2429 } 2430 } 2431 lp = nlp; 2432 } 2433 /* and release defunct lock owners */ 2434 LIST_FOREACH_SAFE(lp, &lh, nfsl_list, nlp) { 2435 nfscl_freelockowner(lp, 0); 2436 } 2437 2438 /* 2439 * Do the recall on any delegations. To avoid trouble, always 2440 * come back up here after having slept. 2441 */ 2442 igotlock = 0; 2443 tryagain: 2444 dp = TAILQ_FIRST(&clp->nfsc_deleg); 2445 while (dp != NULL) { 2446 ndp = TAILQ_NEXT(dp, nfsdl_list); 2447 if ((dp->nfsdl_flags & NFSCLDL_RECALL)) { 2448 /* 2449 * Wait for outstanding I/O ops to be done. 2450 */ 2451 if (dp->nfsdl_rwlock.nfslock_usecnt > 0) { 2452 if (igotlock) { 2453 nfsv4_unlock(&clp->nfsc_lock, 0); 2454 igotlock = 0; 2455 } 2456 dp->nfsdl_rwlock.nfslock_lock |= 2457 NFSV4LOCK_WANTED; 2458 (void) nfsmsleep(&dp->nfsdl_rwlock, 2459 NFSCLSTATEMUTEXPTR, PZERO, "nfscld", 2460 NULL); 2461 goto tryagain; 2462 } 2463 while (!igotlock) { 2464 igotlock = nfsv4_lock(&clp->nfsc_lock, 1, 2465 &islept, NFSCLSTATEMUTEXPTR); 2466 if (islept) 2467 goto tryagain; 2468 } 2469 NFSUNLOCKCLSTATE(); 2470 newnfs_copycred(&dp->nfsdl_cred, cred); 2471 ret = nfscl_recalldeleg(clp, clp->nfsc_nmp, dp, 2472 NULL, cred, p, 1); 2473 if (!ret) { 2474 nfscl_cleandeleg(dp); 2475 TAILQ_REMOVE(&clp->nfsc_deleg, dp, 2476 nfsdl_list); 2477 LIST_REMOVE(dp, nfsdl_hash); 2478 TAILQ_INSERT_HEAD(&dh, dp, nfsdl_list); 2479 nfscl_delegcnt--; 2480 newnfsstats.cldelegates--; 2481 } 2482 NFSLOCKCLSTATE(); 2483 } 2484 dp = ndp; 2485 } 2486 2487 /* 2488 * Clear out old delegations, if we are above the high water 2489 * mark. Only clear out ones with no state related to them. 2490 * The tailq list is in LRU order. 2491 */ 2492 dp = TAILQ_LAST(&clp->nfsc_deleg, nfscldeleghead); 2493 while (nfscl_delegcnt > nfscl_deleghighwater && dp != NULL) { 2494 ndp = TAILQ_PREV(dp, nfscldeleghead, nfsdl_list); 2495 if (dp->nfsdl_rwlock.nfslock_usecnt == 0 && 2496 dp->nfsdl_rwlock.nfslock_lock == 0 && 2497 dp->nfsdl_timestamp < NFSD_MONOSEC && 2498 !(dp->nfsdl_flags & (NFSCLDL_RECALL | NFSCLDL_ZAPPED | 2499 NFSCLDL_NEEDRECLAIM))) { 2500 clearok = 1; 2501 LIST_FOREACH(owp, &dp->nfsdl_owner, nfsow_list) { 2502 op = LIST_FIRST(&owp->nfsow_open); 2503 if (op != NULL) { 2504 clearok = 0; 2505 break; 2506 } 2507 } 2508 if (clearok) { 2509 LIST_FOREACH(lp, &dp->nfsdl_lock, nfsl_list) { 2510 if (!LIST_EMPTY(&lp->nfsl_lock)) { 2511 clearok = 0; 2512 break; 2513 } 2514 } 2515 } 2516 if (clearok) { 2517 TAILQ_REMOVE(&clp->nfsc_deleg, dp, nfsdl_list); 2518 LIST_REMOVE(dp, nfsdl_hash); 2519 TAILQ_INSERT_HEAD(&dh, dp, nfsdl_list); 2520 nfscl_delegcnt--; 2521 newnfsstats.cldelegates--; 2522 } 2523 } 2524 dp = ndp; 2525 } 2526 if (igotlock) 2527 nfsv4_unlock(&clp->nfsc_lock, 0); 2528 NFSUNLOCKCLSTATE(); 2529 2530 /* 2531 * Delegreturn any delegations cleaned out or recalled. 2532 */ 2533 TAILQ_FOREACH_SAFE(dp, &dh, nfsdl_list, ndp) { 2534 newnfs_copycred(&dp->nfsdl_cred, cred); 2535 (void) nfscl_trydelegreturn(dp, cred, clp->nfsc_nmp, p); 2536 TAILQ_REMOVE(&dh, dp, nfsdl_list); 2537 FREE((caddr_t)dp, M_NFSCLDELEG); 2538 } 2539 2540 #if defined(APPLEKEXT) || defined(__FreeBSD__) 2541 /* 2542 * Simulate the calls to nfscl_cleanup() when a process 2543 * exits, since the call can't be patched into exit(). 2544 */ 2545 { 2546 struct timespec mytime; 2547 static time_t prevsec = 0; 2548 2549 NFSGETNANOTIME(&mytime); 2550 if (prevsec != mytime.tv_sec) { 2551 prevsec = mytime.tv_sec; 2552 nfscl_cleanupkext(clp); 2553 } 2554 } 2555 #endif /* APPLEKEXT || __FreeBSD__ */ 2556 2557 if ((clp->nfsc_flags & NFSCLFLAGS_RECOVER) == 0) 2558 (void) tsleep((caddr_t)clp, PWAIT, "nfscl", hz); 2559 if (clp->nfsc_flags & NFSCLFLAGS_UMOUNT) { 2560 NFSFREECRED(cred); 2561 clp->nfsc_flags &= ~NFSCLFLAGS_HASTHREAD; 2562 wakeup((caddr_t)clp); 2563 return; 2564 } 2565 } 2566 } 2567 2568 /* 2569 * Initiate state recovery. Called when NFSERR_STALECLIENTID or 2570 * NFSERR_STALESTATEID is received. 2571 */ 2572 APPLESTATIC void 2573 nfscl_initiate_recovery(struct nfsclclient *clp) 2574 { 2575 2576 if (clp == NULL) 2577 return; 2578 NFSLOCKCLSTATE(); 2579 clp->nfsc_flags |= NFSCLFLAGS_RECOVER; 2580 NFSUNLOCKCLSTATE(); 2581 wakeup((caddr_t)clp); 2582 } 2583 2584 /* 2585 * Dump out the state stuff for debugging. 2586 */ 2587 APPLESTATIC void 2588 nfscl_dumpstate(struct nfsmount *nmp, int openowner, int opens, 2589 int lockowner, int locks) 2590 { 2591 struct nfsclclient *clp; 2592 struct nfsclowner *owp; 2593 struct nfsclopen *op; 2594 struct nfscllockowner *lp; 2595 struct nfscllock *lop; 2596 struct nfscldeleg *dp; 2597 2598 clp = nmp->nm_clp; 2599 if (clp == NULL) { 2600 printf("nfscl dumpstate NULL clp\n"); 2601 return; 2602 } 2603 NFSLOCKCLSTATE(); 2604 TAILQ_FOREACH(dp, &clp->nfsc_deleg, nfsdl_list) { 2605 LIST_FOREACH(owp, &dp->nfsdl_owner, nfsow_list) { 2606 if (openowner && !LIST_EMPTY(&owp->nfsow_open)) 2607 printf("owner=0x%x 0x%x 0x%x 0x%x seqid=%d\n", 2608 owp->nfsow_owner[0], owp->nfsow_owner[1], 2609 owp->nfsow_owner[2], owp->nfsow_owner[3], 2610 owp->nfsow_seqid); 2611 LIST_FOREACH(op, &owp->nfsow_open, nfso_list) { 2612 if (opens) 2613 printf("open st=0x%x 0x%x 0x%x cnt=%d fh12=0x%x\n", 2614 op->nfso_stateid.other[0], op->nfso_stateid.other[1], 2615 op->nfso_stateid.other[2], op->nfso_opencnt, 2616 op->nfso_fh[12]); 2617 LIST_FOREACH(lp, &op->nfso_lock, nfsl_list) { 2618 if (lockowner) 2619 printf("lckown=0x%x 0x%x 0x%x 0x%x seqid=%d st=0x%x 0x%x 0x%x\n", 2620 lp->nfsl_owner[0], lp->nfsl_owner[1], 2621 lp->nfsl_owner[2], lp->nfsl_owner[3], 2622 lp->nfsl_seqid, 2623 lp->nfsl_stateid.other[0], lp->nfsl_stateid.other[1], 2624 lp->nfsl_stateid.other[2]); 2625 LIST_FOREACH(lop, &lp->nfsl_lock, nfslo_list) { 2626 if (locks) 2627 #ifdef __FreeBSD__ 2628 printf("lck typ=%d fst=%ju end=%ju\n", 2629 lop->nfslo_type, (intmax_t)lop->nfslo_first, 2630 (intmax_t)lop->nfslo_end); 2631 #else 2632 printf("lck typ=%d fst=%qd end=%qd\n", 2633 lop->nfslo_type, lop->nfslo_first, 2634 lop->nfslo_end); 2635 #endif 2636 } 2637 } 2638 } 2639 } 2640 } 2641 LIST_FOREACH(owp, &clp->nfsc_owner, nfsow_list) { 2642 if (openowner && !LIST_EMPTY(&owp->nfsow_open)) 2643 printf("owner=0x%x 0x%x 0x%x 0x%x seqid=%d\n", 2644 owp->nfsow_owner[0], owp->nfsow_owner[1], 2645 owp->nfsow_owner[2], owp->nfsow_owner[3], 2646 owp->nfsow_seqid); 2647 LIST_FOREACH(op, &owp->nfsow_open, nfso_list) { 2648 if (opens) 2649 printf("open st=0x%x 0x%x 0x%x cnt=%d fh12=0x%x\n", 2650 op->nfso_stateid.other[0], op->nfso_stateid.other[1], 2651 op->nfso_stateid.other[2], op->nfso_opencnt, 2652 op->nfso_fh[12]); 2653 LIST_FOREACH(lp, &op->nfso_lock, nfsl_list) { 2654 if (lockowner) 2655 printf("lckown=0x%x 0x%x 0x%x 0x%x seqid=%d st=0x%x 0x%x 0x%x\n", 2656 lp->nfsl_owner[0], lp->nfsl_owner[1], 2657 lp->nfsl_owner[2], lp->nfsl_owner[3], 2658 lp->nfsl_seqid, 2659 lp->nfsl_stateid.other[0], lp->nfsl_stateid.other[1], 2660 lp->nfsl_stateid.other[2]); 2661 LIST_FOREACH(lop, &lp->nfsl_lock, nfslo_list) { 2662 if (locks) 2663 #ifdef __FreeBSD__ 2664 printf("lck typ=%d fst=%ju end=%ju\n", 2665 lop->nfslo_type, (intmax_t)lop->nfslo_first, 2666 (intmax_t)lop->nfslo_end); 2667 #else 2668 printf("lck typ=%d fst=%qd end=%qd\n", 2669 lop->nfslo_type, lop->nfslo_first, 2670 lop->nfslo_end); 2671 #endif 2672 } 2673 } 2674 } 2675 } 2676 NFSUNLOCKCLSTATE(); 2677 } 2678 2679 /* 2680 * Check for duplicate open owners and opens. 2681 * (Only used as a diagnostic aid.) 2682 */ 2683 APPLESTATIC void 2684 nfscl_dupopen(vnode_t vp, int dupopens) 2685 { 2686 struct nfsclclient *clp; 2687 struct nfsclowner *owp, *owp2; 2688 struct nfsclopen *op, *op2; 2689 struct nfsfh *nfhp; 2690 2691 clp = VFSTONFS(vnode_mount(vp))->nm_clp; 2692 if (clp == NULL) { 2693 printf("nfscl dupopen NULL clp\n"); 2694 return; 2695 } 2696 nfhp = VTONFS(vp)->n_fhp; 2697 NFSLOCKCLSTATE(); 2698 2699 /* 2700 * First, search for duplicate owners. 2701 * These should never happen! 2702 */ 2703 LIST_FOREACH(owp2, &clp->nfsc_owner, nfsow_list) { 2704 LIST_FOREACH(owp, &clp->nfsc_owner, nfsow_list) { 2705 if (owp != owp2 && 2706 !NFSBCMP(owp->nfsow_owner, owp2->nfsow_owner, 2707 NFSV4CL_LOCKNAMELEN)) { 2708 NFSUNLOCKCLSTATE(); 2709 printf("DUP OWNER\n"); 2710 nfscl_dumpstate(VFSTONFS(vnode_mount(vp)), 1, 1, 0, 0); 2711 return; 2712 } 2713 } 2714 } 2715 2716 /* 2717 * Now, search for duplicate stateids. 2718 * These shouldn't happen, either. 2719 */ 2720 LIST_FOREACH(owp2, &clp->nfsc_owner, nfsow_list) { 2721 LIST_FOREACH(op2, &owp2->nfsow_open, nfso_list) { 2722 LIST_FOREACH(owp, &clp->nfsc_owner, nfsow_list) { 2723 LIST_FOREACH(op, &owp->nfsow_open, nfso_list) { 2724 if (op != op2 && 2725 (op->nfso_stateid.other[0] != 0 || 2726 op->nfso_stateid.other[1] != 0 || 2727 op->nfso_stateid.other[2] != 0) && 2728 op->nfso_stateid.other[0] == op2->nfso_stateid.other[0] && 2729 op->nfso_stateid.other[1] == op2->nfso_stateid.other[1] && 2730 op->nfso_stateid.other[2] == op2->nfso_stateid.other[2]) { 2731 NFSUNLOCKCLSTATE(); 2732 printf("DUP STATEID\n"); 2733 nfscl_dumpstate(VFSTONFS(vnode_mount(vp)), 1, 1, 0, 2734 0); 2735 return; 2736 } 2737 } 2738 } 2739 } 2740 } 2741 2742 /* 2743 * Now search for duplicate opens. 2744 * Duplicate opens for the same owner 2745 * should never occur. Other duplicates are 2746 * possible and are checked for if "dupopens" 2747 * is true. 2748 */ 2749 LIST_FOREACH(owp2, &clp->nfsc_owner, nfsow_list) { 2750 LIST_FOREACH(op2, &owp2->nfsow_open, nfso_list) { 2751 if (nfhp->nfh_len == op2->nfso_fhlen && 2752 !NFSBCMP(nfhp->nfh_fh, op2->nfso_fh, nfhp->nfh_len)) { 2753 LIST_FOREACH(owp, &clp->nfsc_owner, nfsow_list) { 2754 LIST_FOREACH(op, &owp->nfsow_open, nfso_list) { 2755 if (op != op2 && nfhp->nfh_len == op->nfso_fhlen && 2756 !NFSBCMP(nfhp->nfh_fh, op->nfso_fh, nfhp->nfh_len) && 2757 (!NFSBCMP(op->nfso_own->nfsow_owner, 2758 op2->nfso_own->nfsow_owner, NFSV4CL_LOCKNAMELEN) || 2759 dupopens)) { 2760 if (!NFSBCMP(op->nfso_own->nfsow_owner, 2761 op2->nfso_own->nfsow_owner, NFSV4CL_LOCKNAMELEN)) { 2762 NFSUNLOCKCLSTATE(); 2763 printf("BADDUP OPEN\n"); 2764 } else { 2765 NFSUNLOCKCLSTATE(); 2766 printf("DUP OPEN\n"); 2767 } 2768 nfscl_dumpstate(VFSTONFS(vnode_mount(vp)), 1, 1, 2769 0, 0); 2770 return; 2771 } 2772 } 2773 } 2774 } 2775 } 2776 } 2777 NFSUNLOCKCLSTATE(); 2778 } 2779 2780 /* 2781 * During close, find an open that needs to be dereferenced and 2782 * dereference it. If there are no more opens for this file, 2783 * log a message to that effect. 2784 * Opens aren't actually Close'd until VOP_INACTIVE() is performed 2785 * on the file's vnode. 2786 * This is the safe way, since it is difficult to identify 2787 * which open the close is for and I/O can be performed after the 2788 * close(2) system call when a file is mmap'd. 2789 * If it returns 0 for success, there will be a referenced 2790 * clp returned via clpp. 2791 */ 2792 APPLESTATIC int 2793 nfscl_getclose(vnode_t vp, struct nfsclclient **clpp) 2794 { 2795 struct nfsclclient *clp; 2796 struct nfsclowner *owp; 2797 struct nfsclopen *op; 2798 struct nfscldeleg *dp; 2799 struct nfsfh *nfhp; 2800 int error, notdecr; 2801 2802 error = nfscl_getcl(vp, NULL, NULL, &clp); 2803 if (error) 2804 return (error); 2805 *clpp = clp; 2806 2807 nfhp = VTONFS(vp)->n_fhp; 2808 notdecr = 1; 2809 NFSLOCKCLSTATE(); 2810 /* 2811 * First, look for one under a delegation that was locally issued 2812 * and just decrement the opencnt for it. Since all my Opens against 2813 * the server are DENY_NONE, I don't see a problem with hanging 2814 * onto them. (It is much easier to use one of the extant Opens 2815 * that I already have on the server when a Delegation is recalled 2816 * than to do fresh Opens.) Someday, I might need to rethink this, but. 2817 */ 2818 dp = nfscl_finddeleg(clp, nfhp->nfh_fh, nfhp->nfh_len); 2819 if (dp != NULL) { 2820 LIST_FOREACH(owp, &dp->nfsdl_owner, nfsow_list) { 2821 op = LIST_FIRST(&owp->nfsow_open); 2822 if (op != NULL) { 2823 /* 2824 * Since a delegation is for a file, there 2825 * should never be more than one open for 2826 * each openowner. 2827 */ 2828 if (LIST_NEXT(op, nfso_list) != NULL) 2829 panic("nfscdeleg opens"); 2830 if (notdecr && op->nfso_opencnt > 0) { 2831 notdecr = 0; 2832 op->nfso_opencnt--; 2833 break; 2834 } 2835 } 2836 } 2837 } 2838 2839 /* Now process the opens against the server. */ 2840 LIST_FOREACH(owp, &clp->nfsc_owner, nfsow_list) { 2841 LIST_FOREACH(op, &owp->nfsow_open, nfso_list) { 2842 if (op->nfso_fhlen == nfhp->nfh_len && 2843 !NFSBCMP(op->nfso_fh, nfhp->nfh_fh, 2844 nfhp->nfh_len)) { 2845 /* Found an open, decrement cnt if possible */ 2846 if (notdecr && op->nfso_opencnt > 0) { 2847 notdecr = 0; 2848 op->nfso_opencnt--; 2849 } 2850 /* 2851 * There are more opens, so just return. 2852 */ 2853 if (op->nfso_opencnt > 0) { 2854 NFSUNLOCKCLSTATE(); 2855 return (0); 2856 } 2857 } 2858 } 2859 } 2860 NFSUNLOCKCLSTATE(); 2861 if (notdecr) 2862 printf("nfscl: never fnd open\n"); 2863 return (0); 2864 } 2865 2866 APPLESTATIC int 2867 nfscl_doclose(vnode_t vp, struct nfsclclient **clpp, NFSPROC_T *p) 2868 { 2869 struct nfsclclient *clp; 2870 struct nfsclowner *owp, *nowp; 2871 struct nfsclopen *op; 2872 struct nfscldeleg *dp; 2873 struct nfsfh *nfhp; 2874 int error; 2875 2876 error = nfscl_getcl(vp, NULL, NULL, &clp); 2877 if (error) 2878 return (error); 2879 *clpp = clp; 2880 2881 nfhp = VTONFS(vp)->n_fhp; 2882 NFSLOCKCLSTATE(); 2883 /* 2884 * First get rid of the local Open structures, which should be no 2885 * longer in use. 2886 */ 2887 dp = nfscl_finddeleg(clp, nfhp->nfh_fh, nfhp->nfh_len); 2888 if (dp != NULL) { 2889 LIST_FOREACH_SAFE(owp, &dp->nfsdl_owner, nfsow_list, nowp) { 2890 op = LIST_FIRST(&owp->nfsow_open); 2891 if (op != NULL) { 2892 KASSERT((op->nfso_opencnt == 0), 2893 ("nfscl: bad open cnt on deleg")); 2894 nfscl_freeopen(op, 1); 2895 } 2896 nfscl_freeopenowner(owp, 1); 2897 } 2898 } 2899 2900 /* Now process the opens against the server. */ 2901 lookformore: 2902 LIST_FOREACH(owp, &clp->nfsc_owner, nfsow_list) { 2903 op = LIST_FIRST(&owp->nfsow_open); 2904 while (op != NULL) { 2905 if (op->nfso_fhlen == nfhp->nfh_len && 2906 !NFSBCMP(op->nfso_fh, nfhp->nfh_fh, 2907 nfhp->nfh_len)) { 2908 /* Found an open, close it. */ 2909 KASSERT((op->nfso_opencnt == 0), 2910 ("nfscl: bad open cnt on server")); 2911 NFSUNLOCKCLSTATE(); 2912 nfsrpc_doclose(VFSTONFS(vnode_mount(vp)), op, 2913 p); 2914 NFSLOCKCLSTATE(); 2915 goto lookformore; 2916 } 2917 op = LIST_NEXT(op, nfso_list); 2918 } 2919 } 2920 NFSUNLOCKCLSTATE(); 2921 return (0); 2922 } 2923 2924 /* 2925 * Return all delegations on this client. 2926 * (Must be called with client sleep lock.) 2927 */ 2928 static void 2929 nfscl_delegreturnall(struct nfsclclient *clp, NFSPROC_T *p) 2930 { 2931 struct nfscldeleg *dp, *ndp; 2932 struct ucred *cred; 2933 2934 cred = newnfs_getcred(); 2935 TAILQ_FOREACH_SAFE(dp, &clp->nfsc_deleg, nfsdl_list, ndp) { 2936 nfscl_cleandeleg(dp); 2937 (void) nfscl_trydelegreturn(dp, cred, clp->nfsc_nmp, p); 2938 nfscl_freedeleg(&clp->nfsc_deleg, dp); 2939 } 2940 NFSFREECRED(cred); 2941 } 2942 2943 /* 2944 * Do a callback RPC. 2945 */ 2946 APPLESTATIC void 2947 nfscl_docb(struct nfsrv_descript *nd, NFSPROC_T *p) 2948 { 2949 int i, op; 2950 u_int32_t *tl; 2951 struct nfsclclient *clp; 2952 struct nfscldeleg *dp = NULL; 2953 int numops, taglen = -1, error = 0, trunc, ret = 0; 2954 u_int32_t minorvers, retops = 0, *retopsp = NULL, *repp, cbident; 2955 u_char tag[NFSV4_SMALLSTR + 1], *tagstr; 2956 vnode_t vp = NULL; 2957 struct nfsnode *np; 2958 struct vattr va; 2959 struct nfsfh *nfhp; 2960 mount_t mp; 2961 nfsattrbit_t attrbits, rattrbits; 2962 nfsv4stateid_t stateid; 2963 2964 nfsrvd_rephead(nd); 2965 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2966 taglen = fxdr_unsigned(int, *tl); 2967 if (taglen < 0) { 2968 error = EBADRPC; 2969 goto nfsmout; 2970 } 2971 if (taglen <= NFSV4_SMALLSTR) 2972 tagstr = tag; 2973 else 2974 tagstr = malloc(taglen + 1, M_TEMP, M_WAITOK); 2975 error = nfsrv_mtostr(nd, tagstr, taglen); 2976 if (error) { 2977 if (taglen > NFSV4_SMALLSTR) 2978 free(tagstr, M_TEMP); 2979 taglen = -1; 2980 goto nfsmout; 2981 } 2982 (void) nfsm_strtom(nd, tag, taglen); 2983 if (taglen > NFSV4_SMALLSTR) { 2984 free(tagstr, M_TEMP); 2985 } 2986 NFSM_BUILD(retopsp, u_int32_t *, NFSX_UNSIGNED); 2987 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 2988 minorvers = fxdr_unsigned(u_int32_t, *tl++); 2989 if (minorvers != NFSV4_MINORVERSION) 2990 nd->nd_repstat = NFSERR_MINORVERMISMATCH; 2991 cbident = fxdr_unsigned(u_int32_t, *tl++); 2992 if (nd->nd_repstat) 2993 numops = 0; 2994 else 2995 numops = fxdr_unsigned(int, *tl); 2996 /* 2997 * Loop around doing the sub ops. 2998 */ 2999 for (i = 0; i < numops; i++) { 3000 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3001 NFSM_BUILD(repp, u_int32_t *, 2 * NFSX_UNSIGNED); 3002 *repp++ = *tl; 3003 op = fxdr_unsigned(int, *tl); 3004 if (op < NFSV4OP_CBGETATTR || op > NFSV4OP_CBRECALL) { 3005 nd->nd_repstat = NFSERR_OPILLEGAL; 3006 *repp = nfscl_errmap(nd); 3007 retops++; 3008 break; 3009 } 3010 nd->nd_procnum = op; 3011 newnfsstats.cbrpccnt[nd->nd_procnum]++; 3012 switch (op) { 3013 case NFSV4OP_CBGETATTR: 3014 clp = NULL; 3015 error = nfsm_getfh(nd, &nfhp); 3016 if (!error) 3017 error = nfsrv_getattrbits(nd, &attrbits, 3018 NULL, NULL); 3019 if (!error) { 3020 mp = nfscl_getmnt(cbident); 3021 if (mp == NULL) 3022 error = NFSERR_SERVERFAULT; 3023 } 3024 if (!error) { 3025 dp = NULL; 3026 NFSLOCKCLSTATE(); 3027 clp = nfscl_findcl(VFSTONFS(mp)); 3028 if (clp != NULL) 3029 dp = nfscl_finddeleg(clp, nfhp->nfh_fh, 3030 nfhp->nfh_len); 3031 NFSUNLOCKCLSTATE(); 3032 if (dp == NULL) 3033 error = NFSERR_SERVERFAULT; 3034 } 3035 if (!error) { 3036 ret = nfscl_ngetreopen(mp, nfhp->nfh_fh, 3037 nfhp->nfh_len, p, &np); 3038 if (!ret) 3039 vp = NFSTOV(np); 3040 } 3041 if (nfhp != NULL) 3042 FREE((caddr_t)nfhp, M_NFSFH); 3043 if (!error) { 3044 NFSZERO_ATTRBIT(&rattrbits); 3045 if (NFSISSET_ATTRBIT(&attrbits, 3046 NFSATTRBIT_SIZE)) { 3047 if (!ret) 3048 va.va_size = np->n_size; 3049 else 3050 va.va_size = dp->nfsdl_size; 3051 NFSSETBIT_ATTRBIT(&rattrbits, 3052 NFSATTRBIT_SIZE); 3053 } 3054 if (NFSISSET_ATTRBIT(&attrbits, 3055 NFSATTRBIT_CHANGE)) { 3056 va.va_filerev = dp->nfsdl_change; 3057 if (ret || (np->n_flag & NDELEGMOD)) 3058 va.va_filerev++; 3059 NFSSETBIT_ATTRBIT(&rattrbits, 3060 NFSATTRBIT_CHANGE); 3061 } 3062 (void) nfsv4_fillattr(nd, NULL, NULL, &va, 3063 NULL, 0, &rattrbits, NULL, NULL, 0, 0); 3064 if (!ret) 3065 vrele(vp); 3066 } 3067 break; 3068 case NFSV4OP_CBRECALL: 3069 clp = NULL; 3070 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 3071 NFSX_UNSIGNED); 3072 stateid.seqid = *tl++; 3073 NFSBCOPY((caddr_t)tl, (caddr_t)stateid.other, 3074 NFSX_STATEIDOTHER); 3075 tl += (NFSX_STATEIDOTHER / NFSX_UNSIGNED); 3076 trunc = fxdr_unsigned(int, *tl); 3077 error = nfsm_getfh(nd, &nfhp); 3078 if (!error) { 3079 mp = nfscl_getmnt(cbident); 3080 if (mp == NULL) 3081 error = NFSERR_SERVERFAULT; 3082 } 3083 if (!error) { 3084 NFSLOCKCLSTATE(); 3085 clp = nfscl_findcl(VFSTONFS(mp)); 3086 if (clp != NULL) { 3087 dp = nfscl_finddeleg(clp, nfhp->nfh_fh, 3088 nfhp->nfh_len); 3089 if (dp != NULL) { 3090 dp->nfsdl_flags |= 3091 NFSCLDL_RECALL; 3092 wakeup((caddr_t)clp); 3093 } 3094 } else { 3095 error = NFSERR_SERVERFAULT; 3096 } 3097 NFSUNLOCKCLSTATE(); 3098 } 3099 if (nfhp != NULL) 3100 FREE((caddr_t)nfhp, M_NFSFH); 3101 break; 3102 }; 3103 if (error) { 3104 if (error == EBADRPC || error == NFSERR_BADXDR) { 3105 nd->nd_repstat = NFSERR_BADXDR; 3106 } else { 3107 nd->nd_repstat = error; 3108 } 3109 error = 0; 3110 } 3111 retops++; 3112 if (nd->nd_repstat) { 3113 *repp = nfscl_errmap(nd); 3114 break; 3115 } else 3116 *repp = 0; /* NFS4_OK */ 3117 } 3118 nfsmout: 3119 if (error) { 3120 if (error == EBADRPC || error == NFSERR_BADXDR) 3121 nd->nd_repstat = NFSERR_BADXDR; 3122 else 3123 printf("nfsv4 comperr1=%d\n", error); 3124 } 3125 if (taglen == -1) { 3126 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 3127 *tl++ = 0; 3128 *tl = 0; 3129 } else { 3130 *retopsp = txdr_unsigned(retops); 3131 } 3132 *nd->nd_errp = nfscl_errmap(nd); 3133 } 3134 3135 /* 3136 * Generate the next cbident value. Basically just increment a static value 3137 * and then check that it isn't already in the list, if it has wrapped around. 3138 */ 3139 static u_int32_t 3140 nfscl_nextcbident(void) 3141 { 3142 struct nfsclclient *clp; 3143 int matched; 3144 static u_int32_t nextcbident = 0; 3145 static int haswrapped = 0; 3146 3147 nextcbident++; 3148 if (nextcbident == 0) 3149 haswrapped = 1; 3150 if (haswrapped) { 3151 /* 3152 * Search the clientid list for one already using this cbident. 3153 */ 3154 do { 3155 matched = 0; 3156 NFSLOCKCLSTATE(); 3157 LIST_FOREACH(clp, &nfsclhead, nfsc_list) { 3158 if (clp->nfsc_cbident == nextcbident) { 3159 matched = 1; 3160 break; 3161 } 3162 } 3163 NFSUNLOCKCLSTATE(); 3164 if (matched == 1) 3165 nextcbident++; 3166 } while (matched); 3167 } 3168 return (nextcbident); 3169 } 3170 3171 /* 3172 * Get the mount point related to a given cbident. 3173 */ 3174 static mount_t 3175 nfscl_getmnt(u_int32_t cbident) 3176 { 3177 struct nfsclclient *clp; 3178 struct nfsmount *nmp; 3179 3180 NFSLOCKCLSTATE(); 3181 LIST_FOREACH(clp, &nfsclhead, nfsc_list) { 3182 if (clp->nfsc_cbident == cbident) 3183 break; 3184 } 3185 if (clp == NULL) { 3186 NFSUNLOCKCLSTATE(); 3187 return (NULL); 3188 } 3189 nmp = clp->nfsc_nmp; 3190 NFSUNLOCKCLSTATE(); 3191 return (nmp->nm_mountp); 3192 } 3193 3194 /* 3195 * Search for a lock conflict locally on the client. A conflict occurs if 3196 * - not same owner and overlapping byte range and at least one of them is 3197 * a write lock or this is an unlock. 3198 */ 3199 static int 3200 nfscl_localconflict(struct nfsclclient *clp, u_int8_t *fhp, int fhlen, 3201 struct nfscllock *nlop, u_int8_t *own, struct nfscldeleg *dp, 3202 struct nfscllock **lopp) 3203 { 3204 struct nfsclowner *owp; 3205 struct nfsclopen *op; 3206 int ret; 3207 3208 if (dp != NULL) { 3209 ret = nfscl_checkconflict(&dp->nfsdl_lock, nlop, own, lopp); 3210 if (ret) 3211 return (ret); 3212 } 3213 LIST_FOREACH(owp, &clp->nfsc_owner, nfsow_list) { 3214 LIST_FOREACH(op, &owp->nfsow_open, nfso_list) { 3215 if (op->nfso_fhlen == fhlen && 3216 !NFSBCMP(op->nfso_fh, fhp, fhlen)) { 3217 ret = nfscl_checkconflict(&op->nfso_lock, nlop, 3218 own, lopp); 3219 if (ret) 3220 return (ret); 3221 } 3222 } 3223 } 3224 return (0); 3225 } 3226 3227 static int 3228 nfscl_checkconflict(struct nfscllockownerhead *lhp, struct nfscllock *nlop, 3229 u_int8_t *own, struct nfscllock **lopp) 3230 { 3231 struct nfscllockowner *lp; 3232 struct nfscllock *lop; 3233 3234 LIST_FOREACH(lp, lhp, nfsl_list) { 3235 if (NFSBCMP(lp->nfsl_owner, own, NFSV4CL_LOCKNAMELEN)) { 3236 LIST_FOREACH(lop, &lp->nfsl_lock, nfslo_list) { 3237 if (lop->nfslo_first >= nlop->nfslo_end) 3238 break; 3239 if (lop->nfslo_end <= nlop->nfslo_first) 3240 continue; 3241 if (lop->nfslo_type == F_WRLCK || 3242 nlop->nfslo_type == F_WRLCK || 3243 nlop->nfslo_type == F_UNLCK) { 3244 if (lopp != NULL) 3245 *lopp = lop; 3246 return (NFSERR_DENIED); 3247 } 3248 } 3249 } 3250 } 3251 return (0); 3252 } 3253 3254 /* 3255 * Check for a local conflicting lock. 3256 */ 3257 APPLESTATIC int 3258 nfscl_lockt(vnode_t vp, struct nfsclclient *clp, u_int64_t off, 3259 u_int64_t len, struct flock *fl, NFSPROC_T *p) 3260 { 3261 struct nfscllock *lop, nlck; 3262 struct nfscldeleg *dp; 3263 struct nfsnode *np; 3264 u_int8_t own[NFSV4CL_LOCKNAMELEN]; 3265 int error; 3266 3267 nlck.nfslo_type = fl->l_type; 3268 nlck.nfslo_first = off; 3269 if (len == NFS64BITSSET) { 3270 nlck.nfslo_end = NFS64BITSSET; 3271 } else { 3272 nlck.nfslo_end = off + len; 3273 if (nlck.nfslo_end <= nlck.nfslo_first) 3274 return (NFSERR_INVAL); 3275 } 3276 np = VTONFS(vp); 3277 nfscl_filllockowner(p, own); 3278 NFSLOCKCLSTATE(); 3279 dp = nfscl_finddeleg(clp, np->n_fhp->nfh_fh, np->n_fhp->nfh_len); 3280 error = nfscl_localconflict(clp, np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 3281 &nlck, own, dp, &lop); 3282 if (error != 0) { 3283 fl->l_whence = SEEK_SET; 3284 fl->l_start = lop->nfslo_first; 3285 if (lop->nfslo_end == NFS64BITSSET) 3286 fl->l_len = 0; 3287 else 3288 fl->l_len = lop->nfslo_end - lop->nfslo_first; 3289 fl->l_pid = (pid_t)0; 3290 fl->l_type = lop->nfslo_type; 3291 error = -1; /* no RPC required */ 3292 } else if (dp != NULL && ((dp->nfsdl_flags & NFSCLDL_WRITE) || 3293 fl->l_type == F_RDLCK)) { 3294 /* 3295 * The delegation ensures that there isn't a conflicting 3296 * lock on the server, so return -1 to indicate an RPC 3297 * isn't required. 3298 */ 3299 fl->l_type = F_UNLCK; 3300 error = -1; 3301 } 3302 NFSUNLOCKCLSTATE(); 3303 return (error); 3304 } 3305 3306 /* 3307 * Handle Recall of a delegation. 3308 * The clp must be exclusive locked when this is called. 3309 */ 3310 static int 3311 nfscl_recalldeleg(struct nfsclclient *clp, struct nfsmount *nmp, 3312 struct nfscldeleg *dp, vnode_t vp, struct ucred *cred, NFSPROC_T *p, 3313 int called_from_renewthread) 3314 { 3315 struct nfsclowner *owp, *lowp, *nowp; 3316 struct nfsclopen *op, *lop; 3317 struct nfscllockowner *lp; 3318 struct nfscllock *lckp; 3319 struct nfsnode *np; 3320 int error = 0, ret, gotvp = 0; 3321 3322 if (vp == NULL) { 3323 /* 3324 * First, get a vnode for the file. This is needed to do RPCs. 3325 */ 3326 ret = nfscl_ngetreopen(nmp->nm_mountp, dp->nfsdl_fh, 3327 dp->nfsdl_fhlen, p, &np); 3328 if (ret) { 3329 /* 3330 * File isn't open, so nothing to move over to the 3331 * server. 3332 */ 3333 return (0); 3334 } 3335 vp = NFSTOV(np); 3336 gotvp = 1; 3337 } else { 3338 np = VTONFS(vp); 3339 } 3340 dp->nfsdl_flags &= ~NFSCLDL_MODTIMESET; 3341 NFSINVALATTRCACHE(np); 3342 3343 /* 3344 * Ok, if it's a write delegation, flush data to the server, so 3345 * that close/open consistency is retained. 3346 */ 3347 ret = 0; 3348 NFSLOCKNODE(np); 3349 if ((dp->nfsdl_flags & NFSCLDL_WRITE) && (np->n_flag & NMODIFIED)) { 3350 #ifdef APPLE 3351 OSBitOrAtomic((u_int32_t)NDELEGRECALL, (UInt32 *)&np->n_flag); 3352 #else 3353 np->n_flag |= NDELEGRECALL; 3354 #endif 3355 NFSUNLOCKNODE(np); 3356 ret = ncl_flush(vp, MNT_WAIT, cred, p, 1, 3357 called_from_renewthread); 3358 NFSLOCKNODE(np); 3359 #ifdef APPLE 3360 OSBitAndAtomic((int32_t)~(NMODIFIED | NDELEGRECALL), (UInt32 *)&np->n_flag); 3361 #else 3362 np->n_flag &= ~(NMODIFIED | NDELEGRECALL); 3363 #endif 3364 } 3365 NFSUNLOCKNODE(np); 3366 if (ret == EIO && called_from_renewthread != 0) { 3367 /* 3368 * If the flush failed with EIO for the renew thread, 3369 * return now, so that the dirty buffer will be flushed 3370 * later. 3371 */ 3372 if (gotvp != 0) 3373 vrele(vp); 3374 return (ret); 3375 } 3376 3377 /* 3378 * Now, for each openowner with opens issued locally, move them 3379 * over to state against the server. 3380 */ 3381 LIST_FOREACH(lowp, &dp->nfsdl_owner, nfsow_list) { 3382 lop = LIST_FIRST(&lowp->nfsow_open); 3383 if (lop != NULL) { 3384 if (LIST_NEXT(lop, nfso_list) != NULL) 3385 panic("nfsdlg mult opens"); 3386 /* 3387 * Look for the same openowner against the server. 3388 */ 3389 LIST_FOREACH(owp, &clp->nfsc_owner, nfsow_list) { 3390 if (!NFSBCMP(lowp->nfsow_owner, 3391 owp->nfsow_owner, NFSV4CL_LOCKNAMELEN)) { 3392 newnfs_copycred(&dp->nfsdl_cred, cred); 3393 ret = nfscl_moveopen(vp, clp, nmp, lop, 3394 owp, dp, cred, p); 3395 if (ret == NFSERR_STALECLIENTID || 3396 ret == NFSERR_STALEDONTRECOVER) { 3397 if (gotvp) 3398 vrele(vp); 3399 return (ret); 3400 } 3401 if (ret) { 3402 nfscl_freeopen(lop, 1); 3403 if (!error) 3404 error = ret; 3405 } 3406 break; 3407 } 3408 } 3409 3410 /* 3411 * If no openowner found, create one and get an open 3412 * for it. 3413 */ 3414 if (owp == NULL) { 3415 MALLOC(nowp, struct nfsclowner *, 3416 sizeof (struct nfsclowner), M_NFSCLOWNER, 3417 M_WAITOK); 3418 nfscl_newopen(clp, NULL, &owp, &nowp, &op, 3419 NULL, lowp->nfsow_owner, dp->nfsdl_fh, 3420 dp->nfsdl_fhlen, NULL); 3421 newnfs_copycred(&dp->nfsdl_cred, cred); 3422 ret = nfscl_moveopen(vp, clp, nmp, lop, 3423 owp, dp, cred, p); 3424 if (ret) { 3425 nfscl_freeopenowner(owp, 0); 3426 if (ret == NFSERR_STALECLIENTID || 3427 ret == NFSERR_STALEDONTRECOVER) { 3428 if (gotvp) 3429 vrele(vp); 3430 return (ret); 3431 } 3432 if (ret) { 3433 nfscl_freeopen(lop, 1); 3434 if (!error) 3435 error = ret; 3436 } 3437 } 3438 } 3439 } 3440 } 3441 3442 /* 3443 * Now, get byte range locks for any locks done locally. 3444 */ 3445 LIST_FOREACH(lp, &dp->nfsdl_lock, nfsl_list) { 3446 LIST_FOREACH(lckp, &lp->nfsl_lock, nfslo_list) { 3447 newnfs_copycred(&dp->nfsdl_cred, cred); 3448 ret = nfscl_relock(vp, clp, nmp, lp, lckp, cred, p); 3449 if (ret == NFSERR_STALESTATEID || 3450 ret == NFSERR_STALEDONTRECOVER || 3451 ret == NFSERR_STALECLIENTID) { 3452 if (gotvp) 3453 vrele(vp); 3454 return (ret); 3455 } 3456 if (ret && !error) 3457 error = ret; 3458 } 3459 } 3460 if (gotvp) 3461 vrele(vp); 3462 return (error); 3463 } 3464 3465 /* 3466 * Move a locally issued open over to an owner on the state list. 3467 * SIDE EFFECT: If it needs to sleep (do an rpc), it unlocks clstate and 3468 * returns with it unlocked. 3469 */ 3470 static int 3471 nfscl_moveopen(vnode_t vp, struct nfsclclient *clp, struct nfsmount *nmp, 3472 struct nfsclopen *lop, struct nfsclowner *owp, struct nfscldeleg *dp, 3473 struct ucred *cred, NFSPROC_T *p) 3474 { 3475 struct nfsclopen *op, *nop; 3476 struct nfscldeleg *ndp; 3477 struct nfsnode *np; 3478 int error = 0, newone; 3479 3480 /* 3481 * First, look for an appropriate open, If found, just increment the 3482 * opencnt in it. 3483 */ 3484 LIST_FOREACH(op, &owp->nfsow_open, nfso_list) { 3485 if ((op->nfso_mode & lop->nfso_mode) == lop->nfso_mode && 3486 op->nfso_fhlen == lop->nfso_fhlen && 3487 !NFSBCMP(op->nfso_fh, lop->nfso_fh, op->nfso_fhlen)) { 3488 op->nfso_opencnt += lop->nfso_opencnt; 3489 nfscl_freeopen(lop, 1); 3490 return (0); 3491 } 3492 } 3493 3494 /* No appropriate open, so we have to do one against the server. */ 3495 np = VTONFS(vp); 3496 MALLOC(nop, struct nfsclopen *, sizeof (struct nfsclopen) + 3497 lop->nfso_fhlen - 1, M_NFSCLOPEN, M_WAITOK); 3498 newone = 0; 3499 nfscl_newopen(clp, NULL, &owp, NULL, &op, &nop, owp->nfsow_owner, 3500 lop->nfso_fh, lop->nfso_fhlen, &newone); 3501 ndp = dp; 3502 error = nfscl_tryopen(nmp, vp, np->n_v4->n4_data, np->n_v4->n4_fhlen, 3503 lop->nfso_fh, lop->nfso_fhlen, lop->nfso_mode, op, 3504 NFS4NODENAME(np->n_v4), np->n_v4->n4_namelen, &ndp, 0, 0, cred, p); 3505 if (error) { 3506 if (newone) 3507 nfscl_freeopen(op, 0); 3508 } else { 3509 if (newone) 3510 newnfs_copyincred(cred, &op->nfso_cred); 3511 op->nfso_mode |= lop->nfso_mode; 3512 op->nfso_opencnt += lop->nfso_opencnt; 3513 nfscl_freeopen(lop, 1); 3514 } 3515 if (nop != NULL) 3516 FREE((caddr_t)nop, M_NFSCLOPEN); 3517 if (ndp != NULL) { 3518 /* 3519 * What should I do with the returned delegation, since the 3520 * delegation is being recalled? For now, just printf and 3521 * through it away. 3522 */ 3523 printf("Moveopen returned deleg\n"); 3524 FREE((caddr_t)ndp, M_NFSCLDELEG); 3525 } 3526 return (error); 3527 } 3528 3529 /* 3530 * Recall all delegations on this client. 3531 */ 3532 static void 3533 nfscl_totalrecall(struct nfsclclient *clp) 3534 { 3535 struct nfscldeleg *dp; 3536 3537 TAILQ_FOREACH(dp, &clp->nfsc_deleg, nfsdl_list) 3538 dp->nfsdl_flags |= NFSCLDL_RECALL; 3539 } 3540 3541 /* 3542 * Relock byte ranges. Called for delegation recall and state expiry. 3543 */ 3544 static int 3545 nfscl_relock(vnode_t vp, struct nfsclclient *clp, struct nfsmount *nmp, 3546 struct nfscllockowner *lp, struct nfscllock *lop, struct ucred *cred, 3547 NFSPROC_T *p) 3548 { 3549 struct nfscllockowner *nlp; 3550 struct nfsfh *nfhp; 3551 u_int64_t off, len; 3552 u_int32_t clidrev = 0; 3553 int error, newone, donelocally; 3554 3555 off = lop->nfslo_first; 3556 len = lop->nfslo_end - lop->nfslo_first; 3557 error = nfscl_getbytelock(vp, off, len, lop->nfslo_type, cred, p, 3558 clp, 1, lp->nfsl_owner, lp->nfsl_openowner, &nlp, &newone, 3559 &donelocally); 3560 if (error || donelocally) 3561 return (error); 3562 if (nmp->nm_clp != NULL) 3563 clidrev = nmp->nm_clp->nfsc_clientidrev; 3564 else 3565 clidrev = 0; 3566 nfhp = VTONFS(vp)->n_fhp; 3567 error = nfscl_trylock(nmp, vp, nfhp->nfh_fh, 3568 nfhp->nfh_len, nlp, newone, 0, off, 3569 len, lop->nfslo_type, cred, p); 3570 if (error) 3571 nfscl_freelockowner(nlp, 0); 3572 return (error); 3573 } 3574 3575 /* 3576 * Called to re-open a file. Basically get a vnode for the file handle 3577 * and then call nfsrpc_openrpc() to do the rest. 3578 */ 3579 static int 3580 nfsrpc_reopen(struct nfsmount *nmp, u_int8_t *fhp, int fhlen, 3581 u_int32_t mode, struct nfsclopen *op, struct nfscldeleg **dpp, 3582 struct ucred *cred, NFSPROC_T *p) 3583 { 3584 struct nfsnode *np; 3585 vnode_t vp; 3586 int error; 3587 3588 error = nfscl_ngetreopen(nmp->nm_mountp, fhp, fhlen, p, &np); 3589 if (error) 3590 return (error); 3591 vp = NFSTOV(np); 3592 if (np->n_v4 != NULL) { 3593 error = nfscl_tryopen(nmp, vp, np->n_v4->n4_data, 3594 np->n_v4->n4_fhlen, fhp, fhlen, mode, op, 3595 NFS4NODENAME(np->n_v4), np->n_v4->n4_namelen, dpp, 0, 0, 3596 cred, p); 3597 } else { 3598 error = EINVAL; 3599 } 3600 vrele(vp); 3601 return (error); 3602 } 3603 3604 /* 3605 * Try an open against the server. Just call nfsrpc_openrpc(), retrying while 3606 * NFSERR_DELAY. Also, try system credentials, if the passed in credentials 3607 * fail. 3608 */ 3609 static int 3610 nfscl_tryopen(struct nfsmount *nmp, vnode_t vp, u_int8_t *fhp, int fhlen, 3611 u_int8_t *newfhp, int newfhlen, u_int32_t mode, struct nfsclopen *op, 3612 u_int8_t *name, int namelen, struct nfscldeleg **ndpp, 3613 int reclaim, u_int32_t delegtype, struct ucred *cred, NFSPROC_T *p) 3614 { 3615 int error; 3616 3617 do { 3618 error = nfsrpc_openrpc(nmp, vp, fhp, fhlen, newfhp, newfhlen, 3619 mode, op, name, namelen, ndpp, reclaim, delegtype, cred, p, 3620 0, 0); 3621 if (error == NFSERR_DELAY) 3622 (void) nfs_catnap(PZERO, error, "nfstryop"); 3623 } while (error == NFSERR_DELAY); 3624 if (error == EAUTH || error == EACCES) { 3625 /* Try again using system credentials */ 3626 newnfs_setroot(cred); 3627 do { 3628 error = nfsrpc_openrpc(nmp, vp, fhp, fhlen, newfhp, 3629 newfhlen, mode, op, name, namelen, ndpp, reclaim, 3630 delegtype, cred, p, 1, 0); 3631 if (error == NFSERR_DELAY) 3632 (void) nfs_catnap(PZERO, error, "nfstryop"); 3633 } while (error == NFSERR_DELAY); 3634 } 3635 return (error); 3636 } 3637 3638 /* 3639 * Try a byte range lock. Just loop on nfsrpc_lock() while it returns 3640 * NFSERR_DELAY. Also, retry with system credentials, if the provided 3641 * cred don't work. 3642 */ 3643 static int 3644 nfscl_trylock(struct nfsmount *nmp, vnode_t vp, u_int8_t *fhp, 3645 int fhlen, struct nfscllockowner *nlp, int newone, int reclaim, 3646 u_int64_t off, u_int64_t len, short type, struct ucred *cred, NFSPROC_T *p) 3647 { 3648 struct nfsrv_descript nfsd, *nd = &nfsd; 3649 int error; 3650 3651 do { 3652 error = nfsrpc_lock(nd, nmp, vp, fhp, fhlen, nlp, newone, 3653 reclaim, off, len, type, cred, p, 0); 3654 if (!error && nd->nd_repstat == NFSERR_DELAY) 3655 (void) nfs_catnap(PZERO, (int)nd->nd_repstat, 3656 "nfstrylck"); 3657 } while (!error && nd->nd_repstat == NFSERR_DELAY); 3658 if (!error) 3659 error = nd->nd_repstat; 3660 if (error == EAUTH || error == EACCES) { 3661 /* Try again using root credentials */ 3662 newnfs_setroot(cred); 3663 do { 3664 error = nfsrpc_lock(nd, nmp, vp, fhp, fhlen, nlp, 3665 newone, reclaim, off, len, type, cred, p, 1); 3666 if (!error && nd->nd_repstat == NFSERR_DELAY) 3667 (void) nfs_catnap(PZERO, (int)nd->nd_repstat, 3668 "nfstrylck"); 3669 } while (!error && nd->nd_repstat == NFSERR_DELAY); 3670 if (!error) 3671 error = nd->nd_repstat; 3672 } 3673 return (error); 3674 } 3675 3676 /* 3677 * Try a delegreturn against the server. Just call nfsrpc_delegreturn(), 3678 * retrying while NFSERR_DELAY. Also, try system credentials, if the passed in 3679 * credentials fail. 3680 */ 3681 static int 3682 nfscl_trydelegreturn(struct nfscldeleg *dp, struct ucred *cred, 3683 struct nfsmount *nmp, NFSPROC_T *p) 3684 { 3685 int error; 3686 3687 do { 3688 error = nfsrpc_delegreturn(dp, cred, nmp, p, 0); 3689 if (error == NFSERR_DELAY) 3690 (void) nfs_catnap(PZERO, error, "nfstrydp"); 3691 } while (error == NFSERR_DELAY); 3692 if (error == EAUTH || error == EACCES) { 3693 /* Try again using system credentials */ 3694 newnfs_setroot(cred); 3695 do { 3696 error = nfsrpc_delegreturn(dp, cred, nmp, p, 1); 3697 if (error == NFSERR_DELAY) 3698 (void) nfs_catnap(PZERO, error, "nfstrydp"); 3699 } while (error == NFSERR_DELAY); 3700 } 3701 return (error); 3702 } 3703 3704 /* 3705 * Try a close against the server. Just call nfsrpc_closerpc(), 3706 * retrying while NFSERR_DELAY. Also, try system credentials, if the passed in 3707 * credentials fail. 3708 */ 3709 APPLESTATIC int 3710 nfscl_tryclose(struct nfsclopen *op, struct ucred *cred, 3711 struct nfsmount *nmp, NFSPROC_T *p) 3712 { 3713 struct nfsrv_descript nfsd, *nd = &nfsd; 3714 int error; 3715 3716 do { 3717 error = nfsrpc_closerpc(nd, nmp, op, cred, p, 0); 3718 if (error == NFSERR_DELAY) 3719 (void) nfs_catnap(PZERO, error, "nfstrycl"); 3720 } while (error == NFSERR_DELAY); 3721 if (error == EAUTH || error == EACCES) { 3722 /* Try again using system credentials */ 3723 newnfs_setroot(cred); 3724 do { 3725 error = nfsrpc_closerpc(nd, nmp, op, cred, p, 1); 3726 if (error == NFSERR_DELAY) 3727 (void) nfs_catnap(PZERO, error, "nfstrycl"); 3728 } while (error == NFSERR_DELAY); 3729 } 3730 return (error); 3731 } 3732 3733 /* 3734 * Decide if a delegation on a file permits close without flushing writes 3735 * to the server. This might be a big performance win in some environments. 3736 * (Not useful until the client does caching on local stable storage.) 3737 */ 3738 APPLESTATIC int 3739 nfscl_mustflush(vnode_t vp) 3740 { 3741 struct nfsclclient *clp; 3742 struct nfscldeleg *dp; 3743 struct nfsnode *np; 3744 struct nfsmount *nmp; 3745 3746 np = VTONFS(vp); 3747 nmp = VFSTONFS(vnode_mount(vp)); 3748 if (!NFSHASNFSV4(nmp)) 3749 return (1); 3750 NFSLOCKCLSTATE(); 3751 clp = nfscl_findcl(nmp); 3752 if (clp == NULL) { 3753 NFSUNLOCKCLSTATE(); 3754 return (1); 3755 } 3756 dp = nfscl_finddeleg(clp, np->n_fhp->nfh_fh, np->n_fhp->nfh_len); 3757 if (dp != NULL && (dp->nfsdl_flags & (NFSCLDL_WRITE | NFSCLDL_RECALL)) 3758 == NFSCLDL_WRITE && 3759 (dp->nfsdl_sizelimit >= np->n_size || 3760 !NFSHASSTRICT3530(nmp))) { 3761 NFSUNLOCKCLSTATE(); 3762 return (0); 3763 } 3764 NFSUNLOCKCLSTATE(); 3765 return (1); 3766 } 3767 3768 /* 3769 * See if a (write) delegation exists for this file. 3770 */ 3771 APPLESTATIC int 3772 nfscl_nodeleg(vnode_t vp, int writedeleg) 3773 { 3774 struct nfsclclient *clp; 3775 struct nfscldeleg *dp; 3776 struct nfsnode *np; 3777 struct nfsmount *nmp; 3778 3779 np = VTONFS(vp); 3780 nmp = VFSTONFS(vnode_mount(vp)); 3781 if (!NFSHASNFSV4(nmp)) 3782 return (1); 3783 NFSLOCKCLSTATE(); 3784 clp = nfscl_findcl(nmp); 3785 if (clp == NULL) { 3786 NFSUNLOCKCLSTATE(); 3787 return (1); 3788 } 3789 dp = nfscl_finddeleg(clp, np->n_fhp->nfh_fh, np->n_fhp->nfh_len); 3790 if (dp != NULL && (dp->nfsdl_flags & NFSCLDL_RECALL) == 0 && 3791 (writedeleg == 0 || (dp->nfsdl_flags & NFSCLDL_WRITE) 3792 == NFSCLDL_WRITE)) { 3793 NFSUNLOCKCLSTATE(); 3794 return (0); 3795 } 3796 NFSUNLOCKCLSTATE(); 3797 return (1); 3798 } 3799 3800 /* 3801 * Look for an associated delegation that should be DelegReturned. 3802 */ 3803 APPLESTATIC int 3804 nfscl_removedeleg(vnode_t vp, NFSPROC_T *p, nfsv4stateid_t *stp) 3805 { 3806 struct nfsclclient *clp; 3807 struct nfscldeleg *dp; 3808 struct nfsclowner *owp; 3809 struct nfscllockowner *lp; 3810 struct nfsmount *nmp; 3811 struct ucred *cred; 3812 struct nfsnode *np; 3813 int igotlock = 0, triedrecall = 0, needsrecall, retcnt = 0, islept; 3814 3815 nmp = VFSTONFS(vnode_mount(vp)); 3816 np = VTONFS(vp); 3817 NFSLOCKCLSTATE(); 3818 /* 3819 * Loop around waiting for: 3820 * - outstanding I/O operations on delegations to complete 3821 * - for a delegation on vp that has state, lock the client and 3822 * do a recall 3823 * - return delegation with no state 3824 */ 3825 while (1) { 3826 clp = nfscl_findcl(nmp); 3827 if (clp == NULL) { 3828 NFSUNLOCKCLSTATE(); 3829 return (retcnt); 3830 } 3831 dp = nfscl_finddeleg(clp, np->n_fhp->nfh_fh, 3832 np->n_fhp->nfh_len); 3833 if (dp != NULL) { 3834 /* 3835 * Wait for outstanding I/O ops to be done. 3836 */ 3837 if (dp->nfsdl_rwlock.nfslock_usecnt > 0) { 3838 if (igotlock) { 3839 nfsv4_unlock(&clp->nfsc_lock, 0); 3840 igotlock = 0; 3841 } 3842 dp->nfsdl_rwlock.nfslock_lock |= NFSV4LOCK_WANTED; 3843 (void) nfsmsleep(&dp->nfsdl_rwlock, 3844 NFSCLSTATEMUTEXPTR, PZERO, "nfscld", NULL); 3845 continue; 3846 } 3847 needsrecall = 0; 3848 LIST_FOREACH(owp, &dp->nfsdl_owner, nfsow_list) { 3849 if (!LIST_EMPTY(&owp->nfsow_open)) { 3850 needsrecall = 1; 3851 break; 3852 } 3853 } 3854 if (!needsrecall) { 3855 LIST_FOREACH(lp, &dp->nfsdl_lock, nfsl_list) { 3856 if (!LIST_EMPTY(&lp->nfsl_lock)) { 3857 needsrecall = 1; 3858 break; 3859 } 3860 } 3861 } 3862 if (needsrecall && !triedrecall) { 3863 islept = 0; 3864 while (!igotlock) { 3865 igotlock = nfsv4_lock(&clp->nfsc_lock, 1, 3866 &islept, NFSCLSTATEMUTEXPTR); 3867 if (islept) 3868 break; 3869 } 3870 if (islept) 3871 continue; 3872 NFSUNLOCKCLSTATE(); 3873 cred = newnfs_getcred(); 3874 newnfs_copycred(&dp->nfsdl_cred, cred); 3875 (void) nfscl_recalldeleg(clp, nmp, dp, vp, cred, p, 0); 3876 NFSFREECRED(cred); 3877 triedrecall = 1; 3878 NFSLOCKCLSTATE(); 3879 nfsv4_unlock(&clp->nfsc_lock, 0); 3880 igotlock = 0; 3881 continue; 3882 } 3883 *stp = dp->nfsdl_stateid; 3884 retcnt = 1; 3885 nfscl_cleandeleg(dp); 3886 nfscl_freedeleg(&clp->nfsc_deleg, dp); 3887 } 3888 if (igotlock) 3889 nfsv4_unlock(&clp->nfsc_lock, 0); 3890 NFSUNLOCKCLSTATE(); 3891 return (retcnt); 3892 } 3893 } 3894 3895 /* 3896 * Look for associated delegation(s) that should be DelegReturned. 3897 */ 3898 APPLESTATIC int 3899 nfscl_renamedeleg(vnode_t fvp, nfsv4stateid_t *fstp, int *gotfdp, vnode_t tvp, 3900 nfsv4stateid_t *tstp, int *gottdp, NFSPROC_T *p) 3901 { 3902 struct nfsclclient *clp; 3903 struct nfscldeleg *dp; 3904 struct nfsclowner *owp; 3905 struct nfscllockowner *lp; 3906 struct nfsmount *nmp; 3907 struct ucred *cred; 3908 struct nfsnode *np; 3909 int igotlock = 0, triedrecall = 0, needsrecall, retcnt = 0, islept; 3910 3911 nmp = VFSTONFS(vnode_mount(fvp)); 3912 *gotfdp = 0; 3913 *gottdp = 0; 3914 NFSLOCKCLSTATE(); 3915 /* 3916 * Loop around waiting for: 3917 * - outstanding I/O operations on delegations to complete 3918 * - for a delegation on fvp that has state, lock the client and 3919 * do a recall 3920 * - return delegation(s) with no state. 3921 */ 3922 while (1) { 3923 clp = nfscl_findcl(nmp); 3924 if (clp == NULL) { 3925 NFSUNLOCKCLSTATE(); 3926 return (retcnt); 3927 } 3928 np = VTONFS(fvp); 3929 dp = nfscl_finddeleg(clp, np->n_fhp->nfh_fh, 3930 np->n_fhp->nfh_len); 3931 if (dp != NULL && *gotfdp == 0) { 3932 /* 3933 * Wait for outstanding I/O ops to be done. 3934 */ 3935 if (dp->nfsdl_rwlock.nfslock_usecnt > 0) { 3936 if (igotlock) { 3937 nfsv4_unlock(&clp->nfsc_lock, 0); 3938 igotlock = 0; 3939 } 3940 dp->nfsdl_rwlock.nfslock_lock |= NFSV4LOCK_WANTED; 3941 (void) nfsmsleep(&dp->nfsdl_rwlock, 3942 NFSCLSTATEMUTEXPTR, PZERO, "nfscld", NULL); 3943 continue; 3944 } 3945 needsrecall = 0; 3946 LIST_FOREACH(owp, &dp->nfsdl_owner, nfsow_list) { 3947 if (!LIST_EMPTY(&owp->nfsow_open)) { 3948 needsrecall = 1; 3949 break; 3950 } 3951 } 3952 if (!needsrecall) { 3953 LIST_FOREACH(lp, &dp->nfsdl_lock, nfsl_list) { 3954 if (!LIST_EMPTY(&lp->nfsl_lock)) { 3955 needsrecall = 1; 3956 break; 3957 } 3958 } 3959 } 3960 if (needsrecall && !triedrecall) { 3961 islept = 0; 3962 while (!igotlock) { 3963 igotlock = nfsv4_lock(&clp->nfsc_lock, 1, 3964 &islept, NFSCLSTATEMUTEXPTR); 3965 if (islept) 3966 break; 3967 } 3968 if (islept) 3969 continue; 3970 NFSUNLOCKCLSTATE(); 3971 cred = newnfs_getcred(); 3972 newnfs_copycred(&dp->nfsdl_cred, cred); 3973 (void) nfscl_recalldeleg(clp, nmp, dp, fvp, cred, p, 0); 3974 NFSFREECRED(cred); 3975 triedrecall = 1; 3976 NFSLOCKCLSTATE(); 3977 nfsv4_unlock(&clp->nfsc_lock, 0); 3978 igotlock = 0; 3979 continue; 3980 } 3981 *fstp = dp->nfsdl_stateid; 3982 retcnt++; 3983 *gotfdp = 1; 3984 nfscl_cleandeleg(dp); 3985 nfscl_freedeleg(&clp->nfsc_deleg, dp); 3986 } 3987 if (igotlock) { 3988 nfsv4_unlock(&clp->nfsc_lock, 0); 3989 igotlock = 0; 3990 } 3991 if (tvp != NULL) { 3992 np = VTONFS(tvp); 3993 dp = nfscl_finddeleg(clp, np->n_fhp->nfh_fh, 3994 np->n_fhp->nfh_len); 3995 if (dp != NULL && *gottdp == 0) { 3996 /* 3997 * Wait for outstanding I/O ops to be done. 3998 */ 3999 if (dp->nfsdl_rwlock.nfslock_usecnt > 0) { 4000 dp->nfsdl_rwlock.nfslock_lock |= NFSV4LOCK_WANTED; 4001 (void) nfsmsleep(&dp->nfsdl_rwlock, 4002 NFSCLSTATEMUTEXPTR, PZERO, "nfscld", NULL); 4003 continue; 4004 } 4005 LIST_FOREACH(owp, &dp->nfsdl_owner, nfsow_list) { 4006 if (!LIST_EMPTY(&owp->nfsow_open)) { 4007 NFSUNLOCKCLSTATE(); 4008 return (retcnt); 4009 } 4010 } 4011 LIST_FOREACH(lp, &dp->nfsdl_lock, nfsl_list) { 4012 if (!LIST_EMPTY(&lp->nfsl_lock)) { 4013 NFSUNLOCKCLSTATE(); 4014 return (retcnt); 4015 } 4016 } 4017 *tstp = dp->nfsdl_stateid; 4018 retcnt++; 4019 *gottdp = 1; 4020 nfscl_cleandeleg(dp); 4021 nfscl_freedeleg(&clp->nfsc_deleg, dp); 4022 } 4023 } 4024 NFSUNLOCKCLSTATE(); 4025 return (retcnt); 4026 } 4027 } 4028 4029 /* 4030 * Get a reference on the clientid associated with the mount point. 4031 * Return 1 if success, 0 otherwise. 4032 */ 4033 APPLESTATIC int 4034 nfscl_getref(struct nfsmount *nmp) 4035 { 4036 struct nfsclclient *clp; 4037 4038 NFSLOCKCLSTATE(); 4039 clp = nfscl_findcl(nmp); 4040 if (clp == NULL) { 4041 NFSUNLOCKCLSTATE(); 4042 return (0); 4043 } 4044 nfsv4_getref(&clp->nfsc_lock, NULL, NFSCLSTATEMUTEXPTR); 4045 NFSUNLOCKCLSTATE(); 4046 return (1); 4047 } 4048 4049 /* 4050 * Release a reference on a clientid acquired with the above call. 4051 */ 4052 APPLESTATIC void 4053 nfscl_relref(struct nfsmount *nmp) 4054 { 4055 struct nfsclclient *clp; 4056 4057 NFSLOCKCLSTATE(); 4058 clp = nfscl_findcl(nmp); 4059 if (clp == NULL) { 4060 NFSUNLOCKCLSTATE(); 4061 return; 4062 } 4063 nfsv4_relref(&clp->nfsc_lock); 4064 NFSUNLOCKCLSTATE(); 4065 } 4066 4067 /* 4068 * Save the size attribute in the delegation, since the nfsnode 4069 * is going away. 4070 */ 4071 APPLESTATIC void 4072 nfscl_reclaimnode(vnode_t vp) 4073 { 4074 struct nfsclclient *clp; 4075 struct nfscldeleg *dp; 4076 struct nfsnode *np = VTONFS(vp); 4077 struct nfsmount *nmp; 4078 4079 nmp = VFSTONFS(vnode_mount(vp)); 4080 if (!NFSHASNFSV4(nmp)) 4081 return; 4082 NFSLOCKCLSTATE(); 4083 clp = nfscl_findcl(nmp); 4084 if (clp == NULL) { 4085 NFSUNLOCKCLSTATE(); 4086 return; 4087 } 4088 dp = nfscl_finddeleg(clp, np->n_fhp->nfh_fh, np->n_fhp->nfh_len); 4089 if (dp != NULL && (dp->nfsdl_flags & NFSCLDL_WRITE)) 4090 dp->nfsdl_size = np->n_size; 4091 NFSUNLOCKCLSTATE(); 4092 } 4093 4094 /* 4095 * Get the saved size attribute in the delegation, since it is a 4096 * newly allocated nfsnode. 4097 */ 4098 APPLESTATIC void 4099 nfscl_newnode(vnode_t vp) 4100 { 4101 struct nfsclclient *clp; 4102 struct nfscldeleg *dp; 4103 struct nfsnode *np = VTONFS(vp); 4104 struct nfsmount *nmp; 4105 4106 nmp = VFSTONFS(vnode_mount(vp)); 4107 if (!NFSHASNFSV4(nmp)) 4108 return; 4109 NFSLOCKCLSTATE(); 4110 clp = nfscl_findcl(nmp); 4111 if (clp == NULL) { 4112 NFSUNLOCKCLSTATE(); 4113 return; 4114 } 4115 dp = nfscl_finddeleg(clp, np->n_fhp->nfh_fh, np->n_fhp->nfh_len); 4116 if (dp != NULL && (dp->nfsdl_flags & NFSCLDL_WRITE)) 4117 np->n_size = dp->nfsdl_size; 4118 NFSUNLOCKCLSTATE(); 4119 } 4120 4121 /* 4122 * If there is a valid write delegation for this file, set the modtime 4123 * to the local clock time. 4124 */ 4125 APPLESTATIC void 4126 nfscl_delegmodtime(vnode_t vp) 4127 { 4128 struct nfsclclient *clp; 4129 struct nfscldeleg *dp; 4130 struct nfsnode *np = VTONFS(vp); 4131 struct nfsmount *nmp; 4132 4133 nmp = VFSTONFS(vnode_mount(vp)); 4134 if (!NFSHASNFSV4(nmp)) 4135 return; 4136 NFSLOCKCLSTATE(); 4137 clp = nfscl_findcl(nmp); 4138 if (clp == NULL) { 4139 NFSUNLOCKCLSTATE(); 4140 return; 4141 } 4142 dp = nfscl_finddeleg(clp, np->n_fhp->nfh_fh, np->n_fhp->nfh_len); 4143 if (dp != NULL && (dp->nfsdl_flags & NFSCLDL_WRITE)) { 4144 NFSGETNANOTIME(&dp->nfsdl_modtime); 4145 dp->nfsdl_flags |= NFSCLDL_MODTIMESET; 4146 } 4147 NFSUNLOCKCLSTATE(); 4148 } 4149 4150 /* 4151 * If there is a valid write delegation for this file with a modtime set, 4152 * put that modtime in mtime. 4153 */ 4154 APPLESTATIC void 4155 nfscl_deleggetmodtime(vnode_t vp, struct timespec *mtime) 4156 { 4157 struct nfsclclient *clp; 4158 struct nfscldeleg *dp; 4159 struct nfsnode *np = VTONFS(vp); 4160 struct nfsmount *nmp; 4161 4162 nmp = VFSTONFS(vnode_mount(vp)); 4163 if (!NFSHASNFSV4(nmp)) 4164 return; 4165 NFSLOCKCLSTATE(); 4166 clp = nfscl_findcl(nmp); 4167 if (clp == NULL) { 4168 NFSUNLOCKCLSTATE(); 4169 return; 4170 } 4171 dp = nfscl_finddeleg(clp, np->n_fhp->nfh_fh, np->n_fhp->nfh_len); 4172 if (dp != NULL && 4173 (dp->nfsdl_flags & (NFSCLDL_WRITE | NFSCLDL_MODTIMESET)) == 4174 (NFSCLDL_WRITE | NFSCLDL_MODTIMESET)) 4175 *mtime = dp->nfsdl_modtime; 4176 NFSUNLOCKCLSTATE(); 4177 } 4178 4179 static int 4180 nfscl_errmap(struct nfsrv_descript *nd) 4181 { 4182 short *defaulterrp, *errp; 4183 4184 if (!nd->nd_repstat) 4185 return (0); 4186 if (nd->nd_procnum == NFSPROC_NOOP) 4187 return (txdr_unsigned(nd->nd_repstat & 0xffff)); 4188 if (nd->nd_repstat == EBADRPC) 4189 return (txdr_unsigned(NFSERR_BADXDR)); 4190 if (nd->nd_repstat == NFSERR_MINORVERMISMATCH || 4191 nd->nd_repstat == NFSERR_OPILLEGAL) 4192 return (txdr_unsigned(nd->nd_repstat)); 4193 errp = defaulterrp = nfscl_cberrmap[nd->nd_procnum]; 4194 while (*++errp) 4195 if (*errp == (short)nd->nd_repstat) 4196 return (txdr_unsigned(nd->nd_repstat)); 4197 return (txdr_unsigned(*defaulterrp)); 4198 } 4199 4200