1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21 /*
22 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
23 * Copyright 2014 Nexenta Systems, Inc. All rights reserved.
24 */
25
26 #include <sys/systm.h>
27 #include <sys/kmem.h>
28 #include <sys/cmn_err.h>
29 #include <sys/atomic.h>
30 #include <sys/clconf.h>
31 #include <sys/cladm.h>
32 #include <sys/flock.h>
33 #include <nfs/export.h>
34 #include <nfs/nfs.h>
35 #include <nfs/nfs4.h>
36 #include <nfs/nfssys.h>
37 #include <nfs/lm.h>
38 #include <sys/pathname.h>
39 #include <sys/sdt.h>
40 #include <sys/nvpair.h>
41
42 extern u_longlong_t nfs4_srv_caller_id;
43
44 extern time_t rfs4_start_time;
45 extern uint_t nfs4_srv_vkey;
46
47 stateid4 special0 = {
48 0,
49 { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }
50 };
51
52 stateid4 special1 = {
53 0xffffffff,
54 {
55 (char)0xff, (char)0xff, (char)0xff, (char)0xff,
56 (char)0xff, (char)0xff, (char)0xff, (char)0xff,
57 (char)0xff, (char)0xff, (char)0xff, (char)0xff
58 }
59 };
60
61
62 #define ISSPECIAL(id) (stateid4_cmp(id, &special0) || \
63 stateid4_cmp(id, &special1))
64
65 /* For embedding the cluster nodeid into our clientid */
66 #define CLUSTER_NODEID_SHIFT 24
67 #define CLUSTER_MAX_NODEID 255
68
69 #ifdef DEBUG
70 int rfs4_debug;
71 #endif
72
73 static uint32_t rfs4_database_debug = 0x00;
74
75 static void rfs4_ss_clid_write(rfs4_client_t *cp, char *leaf);
76 static void rfs4_ss_clid_write_one(rfs4_client_t *cp, char *dir, char *leaf);
77 static void rfs4_dss_clear_oldstate(rfs4_servinst_t *sip);
78 static void rfs4_ss_chkclid_sip(rfs4_client_t *cp, rfs4_servinst_t *sip);
79
80 /*
81 * Couple of simple init/destroy functions for a general waiter
82 */
83 void
rfs4_sw_init(rfs4_state_wait_t * swp)84 rfs4_sw_init(rfs4_state_wait_t *swp)
85 {
86 mutex_init(swp->sw_cv_lock, NULL, MUTEX_DEFAULT, NULL);
87 cv_init(swp->sw_cv, NULL, CV_DEFAULT, NULL);
88 swp->sw_active = FALSE;
89 swp->sw_wait_count = 0;
90 }
91
92 void
rfs4_sw_destroy(rfs4_state_wait_t * swp)93 rfs4_sw_destroy(rfs4_state_wait_t *swp)
94 {
95 mutex_destroy(swp->sw_cv_lock);
96 cv_destroy(swp->sw_cv);
97 }
98
99 void
rfs4_sw_enter(rfs4_state_wait_t * swp)100 rfs4_sw_enter(rfs4_state_wait_t *swp)
101 {
102 mutex_enter(swp->sw_cv_lock);
103 while (swp->sw_active) {
104 swp->sw_wait_count++;
105 cv_wait(swp->sw_cv, swp->sw_cv_lock);
106 swp->sw_wait_count--;
107 }
108 ASSERT(swp->sw_active == FALSE);
109 swp->sw_active = TRUE;
110 mutex_exit(swp->sw_cv_lock);
111 }
112
113 void
rfs4_sw_exit(rfs4_state_wait_t * swp)114 rfs4_sw_exit(rfs4_state_wait_t *swp)
115 {
116 mutex_enter(swp->sw_cv_lock);
117 ASSERT(swp->sw_active == TRUE);
118 swp->sw_active = FALSE;
119 if (swp->sw_wait_count != 0)
120 cv_broadcast(swp->sw_cv);
121 mutex_exit(swp->sw_cv_lock);
122 }
123
124 /*
125 * CPR callback id -- not related to v4 callbacks
126 */
127 static callb_id_t cpr_id = 0;
128
129 static void
deep_lock_copy(LOCK4res * dres,LOCK4res * sres)130 deep_lock_copy(LOCK4res *dres, LOCK4res *sres)
131 {
132 lock_owner4 *slo = &sres->LOCK4res_u.denied.owner;
133 lock_owner4 *dlo = &dres->LOCK4res_u.denied.owner;
134
135 if (sres->status == NFS4ERR_DENIED) {
136 dlo->owner_val = kmem_alloc(slo->owner_len, KM_SLEEP);
137 bcopy(slo->owner_val, dlo->owner_val, slo->owner_len);
138 }
139 }
140
141 static void
deep_lock_free(LOCK4res * res)142 deep_lock_free(LOCK4res *res)
143 {
144 lock_owner4 *lo = &res->LOCK4res_u.denied.owner;
145
146 if (res->status == NFS4ERR_DENIED)
147 kmem_free(lo->owner_val, lo->owner_len);
148 }
149
150 static void
deep_open_copy(OPEN4res * dres,OPEN4res * sres)151 deep_open_copy(OPEN4res *dres, OPEN4res *sres)
152 {
153 nfsace4 *sacep, *dacep;
154
155 if (sres->status != NFS4_OK) {
156 return;
157 }
158
159 dres->attrset = sres->attrset;
160
161 switch (sres->delegation.delegation_type) {
162 case OPEN_DELEGATE_NONE:
163 return;
164 case OPEN_DELEGATE_READ:
165 sacep = &sres->delegation.open_delegation4_u.read.permissions;
166 dacep = &dres->delegation.open_delegation4_u.read.permissions;
167 break;
168 case OPEN_DELEGATE_WRITE:
169 sacep = &sres->delegation.open_delegation4_u.write.permissions;
170 dacep = &dres->delegation.open_delegation4_u.write.permissions;
171 break;
172 }
173 dacep->who.utf8string_val =
174 kmem_alloc(sacep->who.utf8string_len, KM_SLEEP);
175 bcopy(sacep->who.utf8string_val, dacep->who.utf8string_val,
176 sacep->who.utf8string_len);
177 }
178
179 static void
deep_open_free(OPEN4res * res)180 deep_open_free(OPEN4res *res)
181 {
182 nfsace4 *acep;
183 if (res->status != NFS4_OK)
184 return;
185
186 switch (res->delegation.delegation_type) {
187 case OPEN_DELEGATE_NONE:
188 return;
189 case OPEN_DELEGATE_READ:
190 acep = &res->delegation.open_delegation4_u.read.permissions;
191 break;
192 case OPEN_DELEGATE_WRITE:
193 acep = &res->delegation.open_delegation4_u.write.permissions;
194 break;
195 }
196
197 if (acep->who.utf8string_val) {
198 kmem_free(acep->who.utf8string_val, acep->who.utf8string_len);
199 acep->who.utf8string_val = NULL;
200 }
201 }
202
203 void
rfs4_free_reply(nfs_resop4 * rp)204 rfs4_free_reply(nfs_resop4 *rp)
205 {
206 switch (rp->resop) {
207 case OP_LOCK:
208 deep_lock_free(&rp->nfs_resop4_u.oplock);
209 break;
210 case OP_OPEN:
211 deep_open_free(&rp->nfs_resop4_u.opopen);
212 default:
213 break;
214 }
215 }
216
217 void
rfs4_copy_reply(nfs_resop4 * dst,nfs_resop4 * src)218 rfs4_copy_reply(nfs_resop4 *dst, nfs_resop4 *src)
219 {
220 *dst = *src;
221
222 /* Handle responses that need deep copy */
223 switch (src->resop) {
224 case OP_LOCK:
225 deep_lock_copy(&dst->nfs_resop4_u.oplock,
226 &src->nfs_resop4_u.oplock);
227 break;
228 case OP_OPEN:
229 deep_open_copy(&dst->nfs_resop4_u.opopen,
230 &src->nfs_resop4_u.opopen);
231 break;
232 default:
233 break;
234 };
235 }
236
237 /*
238 * This is the implementation of the underlying state engine. The
239 * public interface to this engine is described by
240 * nfs4_state.h. Callers to the engine should hold no state engine
241 * locks when they call in to it. If the protocol needs to lock data
242 * structures it should do so after acquiring all references to them
243 * first and then follow the following lock order:
244 *
245 * client > openowner > state > lo_state > lockowner > file.
246 *
247 * Internally we only allow a thread to hold one hash bucket lock at a
248 * time and the lock is higher in the lock order (must be acquired
249 * first) than the data structure that is on that hash list.
250 *
251 * If a new reference was acquired by the caller, that reference needs
252 * to be released after releasing all acquired locks with the
253 * corresponding rfs4_*_rele routine.
254 */
255
256 /*
257 * This code is some what prototypical for now. Its purpose currently is to
258 * implement the interfaces sufficiently to finish the higher protocol
259 * elements. This will be replaced by a dynamically resizeable tables
260 * backed by kmem_cache allocator. However synchronization is handled
261 * correctly (I hope) and will not change by much. The mutexes for
262 * the hash buckets that can be used to create new instances of data
263 * structures might be good candidates to evolve into reader writer
264 * locks. If it has to do a creation, it would be holding the
265 * mutex across a kmem_alloc with KM_SLEEP specified.
266 */
267
268 #ifdef DEBUG
269 #define TABSIZE 17
270 #else
271 #define TABSIZE 2047
272 #endif
273
274 #define ADDRHASH(key) ((unsigned long)(key) >> 3)
275
276 /* Used to serialize create/destroy of rfs4_server_state database */
277 kmutex_t rfs4_state_lock;
278 static rfs4_database_t *rfs4_server_state = NULL;
279
280 /* Used to serialize lookups of clientids */
281 static krwlock_t rfs4_findclient_lock;
282
283 /*
284 * For now this "table" is exposed so that the CPR callback
285 * function can tromp through it..
286 */
287 rfs4_table_t *rfs4_client_tab;
288
289 static rfs4_index_t *rfs4_clientid_idx;
290 static rfs4_index_t *rfs4_nfsclnt_idx;
291 static rfs4_table_t *rfs4_clntip_tab;
292 static rfs4_index_t *rfs4_clntip_idx;
293 static rfs4_table_t *rfs4_openowner_tab;
294 static rfs4_index_t *rfs4_openowner_idx;
295 static rfs4_table_t *rfs4_state_tab;
296 static rfs4_index_t *rfs4_state_idx;
297 static rfs4_index_t *rfs4_state_owner_file_idx;
298 static rfs4_index_t *rfs4_state_file_idx;
299 static rfs4_table_t *rfs4_lo_state_tab;
300 static rfs4_index_t *rfs4_lo_state_idx;
301 static rfs4_index_t *rfs4_lo_state_owner_idx;
302 static rfs4_table_t *rfs4_lockowner_tab;
303 static rfs4_index_t *rfs4_lockowner_idx;
304 static rfs4_index_t *rfs4_lockowner_pid_idx;
305 static rfs4_table_t *rfs4_file_tab;
306 static rfs4_index_t *rfs4_file_idx;
307 static rfs4_table_t *rfs4_deleg_state_tab;
308 static rfs4_index_t *rfs4_deleg_idx;
309 static rfs4_index_t *rfs4_deleg_state_idx;
310
311 #define MAXTABSZ 1024*1024
312
313 /* The values below are rfs4_lease_time units */
314
315 #ifdef DEBUG
316 #define CLIENT_CACHE_TIME 1
317 #define OPENOWNER_CACHE_TIME 1
318 #define STATE_CACHE_TIME 1
319 #define LO_STATE_CACHE_TIME 1
320 #define LOCKOWNER_CACHE_TIME 1
321 #define FILE_CACHE_TIME 3
322 #define DELEG_STATE_CACHE_TIME 1
323 #else
324 #define CLIENT_CACHE_TIME 10
325 #define OPENOWNER_CACHE_TIME 5
326 #define STATE_CACHE_TIME 1
327 #define LO_STATE_CACHE_TIME 1
328 #define LOCKOWNER_CACHE_TIME 3
329 #define FILE_CACHE_TIME 40
330 #define DELEG_STATE_CACHE_TIME 1
331 #endif
332
333
334 static time_t rfs4_client_cache_time = 0;
335 static time_t rfs4_clntip_cache_time = 0;
336 static time_t rfs4_openowner_cache_time = 0;
337 static time_t rfs4_state_cache_time = 0;
338 static time_t rfs4_lo_state_cache_time = 0;
339 static time_t rfs4_lockowner_cache_time = 0;
340 static time_t rfs4_file_cache_time = 0;
341 static time_t rfs4_deleg_state_cache_time = 0;
342
343 static bool_t rfs4_client_create(rfs4_entry_t, void *);
344 static void rfs4_dss_remove_cpleaf(rfs4_client_t *);
345 static void rfs4_dss_remove_leaf(rfs4_servinst_t *, char *, char *);
346 static void rfs4_client_destroy(rfs4_entry_t);
347 static bool_t rfs4_client_expiry(rfs4_entry_t);
348 static uint32_t clientid_hash(void *);
349 static bool_t clientid_compare(rfs4_entry_t, void *);
350 static void *clientid_mkkey(rfs4_entry_t);
351 static uint32_t nfsclnt_hash(void *);
352 static bool_t nfsclnt_compare(rfs4_entry_t, void *);
353 static void *nfsclnt_mkkey(rfs4_entry_t);
354 static bool_t rfs4_clntip_expiry(rfs4_entry_t);
355 static void rfs4_clntip_destroy(rfs4_entry_t);
356 static bool_t rfs4_clntip_create(rfs4_entry_t, void *);
357 static uint32_t clntip_hash(void *);
358 static bool_t clntip_compare(rfs4_entry_t, void *);
359 static void *clntip_mkkey(rfs4_entry_t);
360 static bool_t rfs4_openowner_create(rfs4_entry_t, void *);
361 static void rfs4_openowner_destroy(rfs4_entry_t);
362 static bool_t rfs4_openowner_expiry(rfs4_entry_t);
363 static uint32_t openowner_hash(void *);
364 static bool_t openowner_compare(rfs4_entry_t, void *);
365 static void *openowner_mkkey(rfs4_entry_t);
366 static bool_t rfs4_state_create(rfs4_entry_t, void *);
367 static void rfs4_state_destroy(rfs4_entry_t);
368 static bool_t rfs4_state_expiry(rfs4_entry_t);
369 static uint32_t state_hash(void *);
370 static bool_t state_compare(rfs4_entry_t, void *);
371 static void *state_mkkey(rfs4_entry_t);
372 static uint32_t state_owner_file_hash(void *);
373 static bool_t state_owner_file_compare(rfs4_entry_t, void *);
374 static void *state_owner_file_mkkey(rfs4_entry_t);
375 static uint32_t state_file_hash(void *);
376 static bool_t state_file_compare(rfs4_entry_t, void *);
377 static void *state_file_mkkey(rfs4_entry_t);
378 static bool_t rfs4_lo_state_create(rfs4_entry_t, void *);
379 static void rfs4_lo_state_destroy(rfs4_entry_t);
380 static bool_t rfs4_lo_state_expiry(rfs4_entry_t);
381 static uint32_t lo_state_hash(void *);
382 static bool_t lo_state_compare(rfs4_entry_t, void *);
383 static void *lo_state_mkkey(rfs4_entry_t);
384 static uint32_t lo_state_lo_hash(void *);
385 static bool_t lo_state_lo_compare(rfs4_entry_t, void *);
386 static void *lo_state_lo_mkkey(rfs4_entry_t);
387 static bool_t rfs4_lockowner_create(rfs4_entry_t, void *);
388 static void rfs4_lockowner_destroy(rfs4_entry_t);
389 static bool_t rfs4_lockowner_expiry(rfs4_entry_t);
390 static uint32_t lockowner_hash(void *);
391 static bool_t lockowner_compare(rfs4_entry_t, void *);
392 static void *lockowner_mkkey(rfs4_entry_t);
393 static uint32_t pid_hash(void *);
394 static bool_t pid_compare(rfs4_entry_t, void *);
395 static void *pid_mkkey(rfs4_entry_t);
396 static bool_t rfs4_file_create(rfs4_entry_t, void *);
397 static void rfs4_file_destroy(rfs4_entry_t);
398 static uint32_t file_hash(void *);
399 static bool_t file_compare(rfs4_entry_t, void *);
400 static void *file_mkkey(rfs4_entry_t);
401 static bool_t rfs4_deleg_state_create(rfs4_entry_t, void *);
402 static void rfs4_deleg_state_destroy(rfs4_entry_t);
403 static bool_t rfs4_deleg_state_expiry(rfs4_entry_t);
404 static uint32_t deleg_hash(void *);
405 static bool_t deleg_compare(rfs4_entry_t, void *);
406 static void *deleg_mkkey(rfs4_entry_t);
407 static uint32_t deleg_state_hash(void *);
408 static bool_t deleg_state_compare(rfs4_entry_t, void *);
409 static void *deleg_state_mkkey(rfs4_entry_t);
410
411 static void rfs4_state_rele_nounlock(rfs4_state_t *);
412
413 static int rfs4_ss_enabled = 0;
414
415 extern void (*rfs4_client_clrst)(struct nfs4clrst_args *);
416
417 void
rfs4_ss_pnfree(rfs4_ss_pn_t * ss_pn)418 rfs4_ss_pnfree(rfs4_ss_pn_t *ss_pn)
419 {
420 kmem_free(ss_pn, sizeof (rfs4_ss_pn_t));
421 }
422
423 static rfs4_ss_pn_t *
rfs4_ss_pnalloc(char * dir,char * leaf)424 rfs4_ss_pnalloc(char *dir, char *leaf)
425 {
426 rfs4_ss_pn_t *ss_pn;
427 int dir_len, leaf_len;
428
429 /*
430 * validate we have a resonable path
431 * (account for the '/' and trailing null)
432 */
433 if ((dir_len = strlen(dir)) > MAXPATHLEN ||
434 (leaf_len = strlen(leaf)) > MAXNAMELEN ||
435 (dir_len + leaf_len + 2) > MAXPATHLEN) {
436 return (NULL);
437 }
438
439 ss_pn = kmem_alloc(sizeof (rfs4_ss_pn_t), KM_SLEEP);
440
441 (void) snprintf(ss_pn->pn, MAXPATHLEN, "%s/%s", dir, leaf);
442 /* Handy pointer to just the leaf name */
443 ss_pn->leaf = ss_pn->pn + dir_len + 1;
444 return (ss_pn);
445 }
446
447
448 /*
449 * Move the "leaf" filename from "sdir" directory
450 * to the "ddir" directory. Return the pathname of
451 * the destination unless the rename fails in which
452 * case we need to return the source pathname.
453 */
454 static rfs4_ss_pn_t *
rfs4_ss_movestate(char * sdir,char * ddir,char * leaf)455 rfs4_ss_movestate(char *sdir, char *ddir, char *leaf)
456 {
457 rfs4_ss_pn_t *src, *dst;
458
459 if ((src = rfs4_ss_pnalloc(sdir, leaf)) == NULL)
460 return (NULL);
461
462 if ((dst = rfs4_ss_pnalloc(ddir, leaf)) == NULL) {
463 rfs4_ss_pnfree(src);
464 return (NULL);
465 }
466
467 /*
468 * If the rename fails we shall return the src
469 * pathname and free the dst. Otherwise we need
470 * to free the src and return the dst pathanme.
471 */
472 if (vn_rename(src->pn, dst->pn, UIO_SYSSPACE)) {
473 rfs4_ss_pnfree(dst);
474 return (src);
475 }
476 rfs4_ss_pnfree(src);
477 return (dst);
478 }
479
480
481 static rfs4_oldstate_t *
rfs4_ss_getstate(vnode_t * dvp,rfs4_ss_pn_t * ss_pn)482 rfs4_ss_getstate(vnode_t *dvp, rfs4_ss_pn_t *ss_pn)
483 {
484 struct uio uio;
485 struct iovec iov[3];
486
487 rfs4_oldstate_t *cl_ss = NULL;
488 vnode_t *vp;
489 vattr_t va;
490 uint_t id_len;
491 int err, kill_file, file_vers;
492
493 if (ss_pn == NULL)
494 return (NULL);
495
496 /*
497 * open the state file.
498 */
499 if (vn_open(ss_pn->pn, UIO_SYSSPACE, FREAD, 0, &vp, 0, 0) != 0) {
500 return (NULL);
501 }
502
503 if (vp->v_type != VREG) {
504 (void) VOP_CLOSE(vp, FREAD, 1, (offset_t)0, CRED(), NULL);
505 VN_RELE(vp);
506 return (NULL);
507 }
508
509 err = VOP_ACCESS(vp, VREAD, 0, CRED(), NULL);
510 if (err) {
511 /*
512 * We don't have read access? better get the heck out.
513 */
514 (void) VOP_CLOSE(vp, FREAD, 1, (offset_t)0, CRED(), NULL);
515 VN_RELE(vp);
516 return (NULL);
517 }
518
519 (void) VOP_RWLOCK(vp, V_WRITELOCK_FALSE, NULL);
520 /*
521 * get the file size to do some basic validation
522 */
523 va.va_mask = AT_SIZE;
524 err = VOP_GETATTR(vp, &va, 0, CRED(), NULL);
525
526 kill_file = (va.va_size == 0 || va.va_size <
527 (NFS4_VERIFIER_SIZE + sizeof (uint_t)+1));
528
529 if (err || kill_file) {
530 VOP_RWUNLOCK(vp, V_WRITELOCK_FALSE, NULL);
531 (void) VOP_CLOSE(vp, FREAD, 1, (offset_t)0, CRED(), NULL);
532 VN_RELE(vp);
533 if (kill_file) {
534 (void) VOP_REMOVE(dvp, ss_pn->leaf, CRED(), NULL, 0);
535 }
536 return (NULL);
537 }
538
539 cl_ss = kmem_alloc(sizeof (rfs4_oldstate_t), KM_SLEEP);
540
541 /*
542 * build iovecs to read in the file_version, verifier and id_len
543 */
544 iov[0].iov_base = (caddr_t)&file_vers;
545 iov[0].iov_len = sizeof (int);
546 iov[1].iov_base = (caddr_t)&cl_ss->cl_id4.verifier;
547 iov[1].iov_len = NFS4_VERIFIER_SIZE;
548 iov[2].iov_base = (caddr_t)&id_len;
549 iov[2].iov_len = sizeof (uint_t);
550
551 uio.uio_iov = iov;
552 uio.uio_iovcnt = 3;
553 uio.uio_segflg = UIO_SYSSPACE;
554 uio.uio_loffset = 0;
555 uio.uio_resid = sizeof (int) + NFS4_VERIFIER_SIZE + sizeof (uint_t);
556
557 if (err = VOP_READ(vp, &uio, FREAD, CRED(), NULL)) {
558 VOP_RWUNLOCK(vp, V_WRITELOCK_FALSE, NULL);
559 (void) VOP_CLOSE(vp, FREAD, 1, (offset_t)0, CRED(), NULL);
560 VN_RELE(vp);
561 kmem_free(cl_ss, sizeof (rfs4_oldstate_t));
562 return (NULL);
563 }
564
565 /*
566 * if the file_version doesn't match or if the
567 * id_len is zero or the combination of the verifier,
568 * id_len and id_val is bigger than the file we have
569 * a problem. If so ditch the file.
570 */
571 kill_file = (file_vers != NFS4_SS_VERSION || id_len == 0 ||
572 (id_len + NFS4_VERIFIER_SIZE + sizeof (uint_t)) > va.va_size);
573
574 if (err || kill_file) {
575 VOP_RWUNLOCK(vp, V_WRITELOCK_FALSE, NULL);
576 (void) VOP_CLOSE(vp, FREAD, 1, (offset_t)0, CRED(), NULL);
577 VN_RELE(vp);
578 kmem_free(cl_ss, sizeof (rfs4_oldstate_t));
579 if (kill_file) {
580 (void) VOP_REMOVE(dvp, ss_pn->leaf, CRED(), NULL, 0);
581 }
582 return (NULL);
583 }
584
585 /*
586 * now get the client id value
587 */
588 cl_ss->cl_id4.id_val = kmem_alloc(id_len, KM_SLEEP);
589 iov[0].iov_base = cl_ss->cl_id4.id_val;
590 iov[0].iov_len = id_len;
591
592 uio.uio_iov = iov;
593 uio.uio_iovcnt = 1;
594 uio.uio_segflg = UIO_SYSSPACE;
595 uio.uio_resid = cl_ss->cl_id4.id_len = id_len;
596
597 if (err = VOP_READ(vp, &uio, FREAD, CRED(), NULL)) {
598 VOP_RWUNLOCK(vp, V_WRITELOCK_FALSE, NULL);
599 (void) VOP_CLOSE(vp, FREAD, 1, (offset_t)0, CRED(), NULL);
600 VN_RELE(vp);
601 kmem_free(cl_ss->cl_id4.id_val, id_len);
602 kmem_free(cl_ss, sizeof (rfs4_oldstate_t));
603 return (NULL);
604 }
605
606 VOP_RWUNLOCK(vp, V_WRITELOCK_FALSE, NULL);
607 (void) VOP_CLOSE(vp, FREAD, 1, (offset_t)0, CRED(), NULL);
608 VN_RELE(vp);
609 return (cl_ss);
610 }
611
612 #ifdef nextdp
613 #undef nextdp
614 #endif
615 #define nextdp(dp) ((struct dirent64 *)((char *)(dp) + (dp)->d_reclen))
616
617 /*
618 * Add entries from statedir to supplied oldstate list.
619 * Optionally, move all entries from statedir -> destdir.
620 */
621 void
rfs4_ss_oldstate(rfs4_oldstate_t * oldstate,char * statedir,char * destdir)622 rfs4_ss_oldstate(rfs4_oldstate_t *oldstate, char *statedir, char *destdir)
623 {
624 rfs4_ss_pn_t *ss_pn;
625 rfs4_oldstate_t *cl_ss = NULL;
626 char *dirt = NULL;
627 int err, dir_eof = 0, size = 0;
628 vnode_t *dvp;
629 struct iovec iov;
630 struct uio uio;
631 struct dirent64 *dep;
632 offset_t dirchunk_offset = 0;
633
634 /*
635 * open the state directory
636 */
637 if (vn_open(statedir, UIO_SYSSPACE, FREAD, 0, &dvp, 0, 0))
638 return;
639
640 if (dvp->v_type != VDIR || VOP_ACCESS(dvp, VREAD, 0, CRED(), NULL))
641 goto out;
642
643 dirt = kmem_alloc(RFS4_SS_DIRSIZE, KM_SLEEP);
644
645 /*
646 * Get and process the directory entries
647 */
648 while (!dir_eof) {
649 (void) VOP_RWLOCK(dvp, V_WRITELOCK_FALSE, NULL);
650 iov.iov_base = dirt;
651 iov.iov_len = RFS4_SS_DIRSIZE;
652 uio.uio_iov = &iov;
653 uio.uio_iovcnt = 1;
654 uio.uio_segflg = UIO_SYSSPACE;
655 uio.uio_loffset = dirchunk_offset;
656 uio.uio_resid = RFS4_SS_DIRSIZE;
657
658 err = VOP_READDIR(dvp, &uio, CRED(), &dir_eof, NULL, 0);
659 VOP_RWUNLOCK(dvp, V_WRITELOCK_FALSE, NULL);
660 if (err)
661 goto out;
662
663 size = RFS4_SS_DIRSIZE - uio.uio_resid;
664
665 /*
666 * Process all the directory entries in this
667 * readdir chunk
668 */
669 for (dep = (struct dirent64 *)dirt; size > 0;
670 dep = nextdp(dep)) {
671
672 size -= dep->d_reclen;
673 dirchunk_offset = dep->d_off;
674
675 /*
676 * Skip '.' and '..'
677 */
678 if (NFS_IS_DOTNAME(dep->d_name))
679 continue;
680
681 ss_pn = rfs4_ss_pnalloc(statedir, dep->d_name);
682 if (ss_pn == NULL)
683 continue;
684
685 if (cl_ss = rfs4_ss_getstate(dvp, ss_pn)) {
686 if (destdir != NULL) {
687 rfs4_ss_pnfree(ss_pn);
688 cl_ss->ss_pn = rfs4_ss_movestate(
689 statedir, destdir, dep->d_name);
690 } else {
691 cl_ss->ss_pn = ss_pn;
692 }
693 insque(cl_ss, oldstate);
694 } else {
695 rfs4_ss_pnfree(ss_pn);
696 }
697 }
698 }
699
700 out:
701 (void) VOP_CLOSE(dvp, FREAD, 1, (offset_t)0, CRED(), NULL);
702 VN_RELE(dvp);
703 if (dirt)
704 kmem_free((caddr_t)dirt, RFS4_SS_DIRSIZE);
705 }
706
707 static void
rfs4_ss_init(void)708 rfs4_ss_init(void)
709 {
710 int npaths = 1;
711 char *default_dss_path = NFS4_DSS_VAR_DIR;
712
713 /* read the default stable storage state */
714 rfs4_dss_readstate(npaths, &default_dss_path);
715
716 rfs4_ss_enabled = 1;
717 }
718
719 static void
rfs4_ss_fini(void)720 rfs4_ss_fini(void)
721 {
722 rfs4_servinst_t *sip;
723
724 mutex_enter(&rfs4_servinst_lock);
725 sip = rfs4_cur_servinst;
726 while (sip != NULL) {
727 rfs4_dss_clear_oldstate(sip);
728 sip = sip->next;
729 }
730 mutex_exit(&rfs4_servinst_lock);
731 }
732
733 /*
734 * Remove all oldstate files referenced by this servinst.
735 */
736 static void
rfs4_dss_clear_oldstate(rfs4_servinst_t * sip)737 rfs4_dss_clear_oldstate(rfs4_servinst_t *sip)
738 {
739 rfs4_oldstate_t *os_head, *osp;
740
741 rw_enter(&sip->oldstate_lock, RW_WRITER);
742 os_head = sip->oldstate;
743
744 if (os_head == NULL) {
745 rw_exit(&sip->oldstate_lock);
746 return;
747 }
748
749 /* skip dummy entry */
750 osp = os_head->next;
751 while (osp != os_head) {
752 char *leaf = osp->ss_pn->leaf;
753 rfs4_oldstate_t *os_next;
754
755 rfs4_dss_remove_leaf(sip, NFS4_DSS_OLDSTATE_LEAF, leaf);
756
757 if (osp->cl_id4.id_val)
758 kmem_free(osp->cl_id4.id_val, osp->cl_id4.id_len);
759 rfs4_ss_pnfree(osp->ss_pn);
760
761 os_next = osp->next;
762 remque(osp);
763 kmem_free(osp, sizeof (rfs4_oldstate_t));
764 osp = os_next;
765 }
766
767 rw_exit(&sip->oldstate_lock);
768 }
769
770 /*
771 * Form the state and oldstate paths, and read in the stable storage files.
772 */
773 void
rfs4_dss_readstate(int npaths,char ** paths)774 rfs4_dss_readstate(int npaths, char **paths)
775 {
776 int i;
777 char *state, *oldstate;
778
779 state = kmem_alloc(MAXPATHLEN, KM_SLEEP);
780 oldstate = kmem_alloc(MAXPATHLEN, KM_SLEEP);
781
782 for (i = 0; i < npaths; i++) {
783 char *path = paths[i];
784
785 (void) sprintf(state, "%s/%s", path, NFS4_DSS_STATE_LEAF);
786 (void) sprintf(oldstate, "%s/%s", path, NFS4_DSS_OLDSTATE_LEAF);
787
788 /*
789 * Populate the current server instance's oldstate list.
790 *
791 * 1. Read stable storage data from old state directory,
792 * leaving its contents alone.
793 *
794 * 2. Read stable storage data from state directory,
795 * and move the latter's contents to old state
796 * directory.
797 */
798 rfs4_ss_oldstate(rfs4_cur_servinst->oldstate, oldstate, NULL);
799 rfs4_ss_oldstate(rfs4_cur_servinst->oldstate, state, oldstate);
800 }
801
802 kmem_free(state, MAXPATHLEN);
803 kmem_free(oldstate, MAXPATHLEN);
804 }
805
806
807 /*
808 * Check if we are still in grace and if the client can be
809 * granted permission to perform reclaims.
810 */
811 void
rfs4_ss_chkclid(rfs4_client_t * cp)812 rfs4_ss_chkclid(rfs4_client_t *cp)
813 {
814 rfs4_servinst_t *sip;
815
816 /*
817 * It should be sufficient to check the oldstate data for just
818 * this client's instance. However, since our per-instance
819 * client grouping is solely temporal, HA-NFSv4 RG failover
820 * might result in clients of the same RG being partitioned into
821 * separate instances.
822 *
823 * Until the client grouping is improved, we must check the
824 * oldstate data for all instances with an active grace period.
825 *
826 * This also serves as the mechanism to remove stale oldstate data.
827 * The first time we check an instance after its grace period has
828 * expired, the oldstate data should be cleared.
829 *
830 * Start at the current instance, and walk the list backwards
831 * to the first.
832 */
833 mutex_enter(&rfs4_servinst_lock);
834 for (sip = rfs4_cur_servinst; sip != NULL; sip = sip->prev) {
835 rfs4_ss_chkclid_sip(cp, sip);
836
837 /* if the above check found this client, we're done */
838 if (cp->rc_can_reclaim)
839 break;
840 }
841 mutex_exit(&rfs4_servinst_lock);
842 }
843
844 static void
rfs4_ss_chkclid_sip(rfs4_client_t * cp,rfs4_servinst_t * sip)845 rfs4_ss_chkclid_sip(rfs4_client_t *cp, rfs4_servinst_t *sip)
846 {
847 rfs4_oldstate_t *osp, *os_head;
848
849 /* short circuit everything if this server instance has no oldstate */
850 rw_enter(&sip->oldstate_lock, RW_READER);
851 os_head = sip->oldstate;
852 rw_exit(&sip->oldstate_lock);
853 if (os_head == NULL)
854 return;
855
856 /*
857 * If this server instance is no longer in a grace period then
858 * the client won't be able to reclaim. No further need for this
859 * instance's oldstate data, so it can be cleared.
860 */
861 if (!rfs4_servinst_in_grace(sip))
862 return;
863
864 /* this instance is still in grace; search for the clientid */
865
866 rw_enter(&sip->oldstate_lock, RW_READER);
867
868 os_head = sip->oldstate;
869 /* skip dummy entry */
870 osp = os_head->next;
871 while (osp != os_head) {
872 if (osp->cl_id4.id_len == cp->rc_nfs_client.id_len) {
873 if (bcmp(osp->cl_id4.id_val, cp->rc_nfs_client.id_val,
874 osp->cl_id4.id_len) == 0) {
875 cp->rc_can_reclaim = 1;
876 break;
877 }
878 }
879 osp = osp->next;
880 }
881
882 rw_exit(&sip->oldstate_lock);
883 }
884
885 /*
886 * Place client information into stable storage: 1/3.
887 * First, generate the leaf filename, from the client's IP address and
888 * the server-generated short-hand clientid.
889 */
890 void
rfs4_ss_clid(rfs4_client_t * cp)891 rfs4_ss_clid(rfs4_client_t *cp)
892 {
893 const char *kinet_ntop6(uchar_t *, char *, size_t);
894 char leaf[MAXNAMELEN], buf[INET6_ADDRSTRLEN];
895 struct sockaddr *ca;
896 uchar_t *b;
897
898 if (rfs4_ss_enabled == 0) {
899 return;
900 }
901
902 buf[0] = 0;
903
904 ca = (struct sockaddr *)&cp->rc_addr;
905
906 /*
907 * Convert the caller's IP address to a dotted string
908 */
909 if (ca->sa_family == AF_INET) {
910 b = (uchar_t *)&((struct sockaddr_in *)ca)->sin_addr;
911 (void) sprintf(buf, "%03d.%03d.%03d.%03d", b[0] & 0xFF,
912 b[1] & 0xFF, b[2] & 0xFF, b[3] & 0xFF);
913 } else if (ca->sa_family == AF_INET6) {
914 struct sockaddr_in6 *sin6;
915
916 sin6 = (struct sockaddr_in6 *)ca;
917 (void) kinet_ntop6((uchar_t *)&sin6->sin6_addr,
918 buf, INET6_ADDRSTRLEN);
919 }
920
921 (void) snprintf(leaf, MAXNAMELEN, "%s-%llx", buf,
922 (longlong_t)cp->rc_clientid);
923 rfs4_ss_clid_write(cp, leaf);
924 }
925
926 /*
927 * Place client information into stable storage: 2/3.
928 * DSS: distributed stable storage: the file may need to be written to
929 * multiple directories.
930 */
931 static void
rfs4_ss_clid_write(rfs4_client_t * cp,char * leaf)932 rfs4_ss_clid_write(rfs4_client_t *cp, char *leaf)
933 {
934 rfs4_servinst_t *sip;
935
936 /*
937 * It should be sufficient to write the leaf file to (all) DSS paths
938 * associated with just this client's instance. However, since our
939 * per-instance client grouping is solely temporal, HA-NFSv4 RG
940 * failover might result in us losing DSS data.
941 *
942 * Until the client grouping is improved, we must write the DSS data
943 * to all instances' paths. Start at the current instance, and
944 * walk the list backwards to the first.
945 */
946 mutex_enter(&rfs4_servinst_lock);
947 for (sip = rfs4_cur_servinst; sip != NULL; sip = sip->prev) {
948 int i, npaths = sip->dss_npaths;
949
950 /* write the leaf file to all DSS paths */
951 for (i = 0; i < npaths; i++) {
952 rfs4_dss_path_t *dss_path = sip->dss_paths[i];
953
954 /* HA-NFSv4 path might have been failed-away from us */
955 if (dss_path == NULL)
956 continue;
957
958 rfs4_ss_clid_write_one(cp, dss_path->path, leaf);
959 }
960 }
961 mutex_exit(&rfs4_servinst_lock);
962 }
963
964 /*
965 * Place client information into stable storage: 3/3.
966 * Write the stable storage data to the requested file.
967 */
968 static void
rfs4_ss_clid_write_one(rfs4_client_t * cp,char * dss_path,char * leaf)969 rfs4_ss_clid_write_one(rfs4_client_t *cp, char *dss_path, char *leaf)
970 {
971 int ioflag;
972 int file_vers = NFS4_SS_VERSION;
973 size_t dirlen;
974 struct uio uio;
975 struct iovec iov[4];
976 char *dir;
977 rfs4_ss_pn_t *ss_pn;
978 vnode_t *vp;
979 nfs_client_id4 *cl_id4 = &(cp->rc_nfs_client);
980
981 /* allow 2 extra bytes for '/' & NUL */
982 dirlen = strlen(dss_path) + strlen(NFS4_DSS_STATE_LEAF) + 2;
983 dir = kmem_alloc(dirlen, KM_SLEEP);
984 (void) sprintf(dir, "%s/%s", dss_path, NFS4_DSS_STATE_LEAF);
985
986 ss_pn = rfs4_ss_pnalloc(dir, leaf);
987 /* rfs4_ss_pnalloc takes its own copy */
988 kmem_free(dir, dirlen);
989 if (ss_pn == NULL)
990 return;
991
992 if (vn_open(ss_pn->pn, UIO_SYSSPACE, FCREAT|FWRITE, 0600, &vp,
993 CRCREAT, 0)) {
994 rfs4_ss_pnfree(ss_pn);
995 return;
996 }
997
998 /*
999 * We need to record leaf - i.e. the filename - so that we know
1000 * what to remove, in the future. However, the dir part of cp->ss_pn
1001 * should never be referenced directly, since it's potentially only
1002 * one of several paths with this leaf in it.
1003 */
1004 if (cp->rc_ss_pn != NULL) {
1005 if (strcmp(cp->rc_ss_pn->leaf, leaf) == 0) {
1006 /* we've already recorded *this* leaf */
1007 rfs4_ss_pnfree(ss_pn);
1008 } else {
1009 /* replace with this leaf */
1010 rfs4_ss_pnfree(cp->rc_ss_pn);
1011 cp->rc_ss_pn = ss_pn;
1012 }
1013 } else {
1014 cp->rc_ss_pn = ss_pn;
1015 }
1016
1017 /*
1018 * Build a scatter list that points to the nfs_client_id4
1019 */
1020 iov[0].iov_base = (caddr_t)&file_vers;
1021 iov[0].iov_len = sizeof (int);
1022 iov[1].iov_base = (caddr_t)&(cl_id4->verifier);
1023 iov[1].iov_len = NFS4_VERIFIER_SIZE;
1024 iov[2].iov_base = (caddr_t)&(cl_id4->id_len);
1025 iov[2].iov_len = sizeof (uint_t);
1026 iov[3].iov_base = (caddr_t)cl_id4->id_val;
1027 iov[3].iov_len = cl_id4->id_len;
1028
1029 uio.uio_iov = iov;
1030 uio.uio_iovcnt = 4;
1031 uio.uio_loffset = 0;
1032 uio.uio_segflg = UIO_SYSSPACE;
1033 uio.uio_llimit = (rlim64_t)MAXOFFSET_T;
1034 uio.uio_resid = cl_id4->id_len + sizeof (int) +
1035 NFS4_VERIFIER_SIZE + sizeof (uint_t);
1036
1037 ioflag = uio.uio_fmode = (FWRITE|FSYNC);
1038 uio.uio_extflg = UIO_COPY_DEFAULT;
1039
1040 (void) VOP_RWLOCK(vp, V_WRITELOCK_TRUE, NULL);
1041 /* write the full client id to the file. */
1042 (void) VOP_WRITE(vp, &uio, ioflag, CRED(), NULL);
1043 VOP_RWUNLOCK(vp, V_WRITELOCK_TRUE, NULL);
1044
1045 (void) VOP_CLOSE(vp, FWRITE, 1, (offset_t)0, CRED(), NULL);
1046 VN_RELE(vp);
1047 }
1048
1049 /*
1050 * DSS: distributed stable storage.
1051 * Unpack the list of paths passed by nfsd.
1052 * Use nvlist_alloc(9F) to manage the data.
1053 * The caller is responsible for allocating and freeing the buffer.
1054 */
1055 int
rfs4_dss_setpaths(char * buf,size_t buflen)1056 rfs4_dss_setpaths(char *buf, size_t buflen)
1057 {
1058 int error;
1059
1060 /*
1061 * If this is a "warm start", i.e. we previously had DSS paths,
1062 * preserve the old paths.
1063 */
1064 if (rfs4_dss_paths != NULL) {
1065 /*
1066 * Before we lose the ptr, destroy the nvlist and pathnames
1067 * array from the warm start before this one.
1068 */
1069 if (rfs4_dss_oldpaths)
1070 nvlist_free(rfs4_dss_oldpaths);
1071 rfs4_dss_oldpaths = rfs4_dss_paths;
1072 }
1073
1074 /* unpack the buffer into a searchable nvlist */
1075 error = nvlist_unpack(buf, buflen, &rfs4_dss_paths, KM_SLEEP);
1076 if (error)
1077 return (error);
1078
1079 /*
1080 * Search the nvlist for the pathnames nvpair (which is the only nvpair
1081 * in the list, and record its location.
1082 */
1083 error = nvlist_lookup_string_array(rfs4_dss_paths, NFS4_DSS_NVPAIR_NAME,
1084 &rfs4_dss_newpaths, &rfs4_dss_numnewpaths);
1085 return (error);
1086 }
1087
1088 /*
1089 * Ultimately the nfssys() call NFS4_CLR_STATE endsup here
1090 * to find and mark the client for forced expire.
1091 */
1092 static void
rfs4_client_scrub(rfs4_entry_t ent,void * arg)1093 rfs4_client_scrub(rfs4_entry_t ent, void *arg)
1094 {
1095 rfs4_client_t *cp = (rfs4_client_t *)ent;
1096 struct nfs4clrst_args *clr = arg;
1097 struct sockaddr_in6 *ent_sin6;
1098 struct in6_addr clr_in6;
1099 struct sockaddr_in *ent_sin;
1100 struct in_addr clr_in;
1101
1102 if (clr->addr_type != cp->rc_addr.ss_family) {
1103 return;
1104 }
1105
1106 switch (clr->addr_type) {
1107
1108 case AF_INET6:
1109 /* copyin the address from user space */
1110 if (copyin(clr->ap, &clr_in6, sizeof (clr_in6))) {
1111 break;
1112 }
1113
1114 ent_sin6 = (struct sockaddr_in6 *)&cp->rc_addr;
1115
1116 /*
1117 * now compare, and if equivalent mark entry
1118 * for forced expiration
1119 */
1120 if (IN6_ARE_ADDR_EQUAL(&ent_sin6->sin6_addr, &clr_in6)) {
1121 cp->rc_forced_expire = 1;
1122 }
1123 break;
1124
1125 case AF_INET:
1126 /* copyin the address from user space */
1127 if (copyin(clr->ap, &clr_in, sizeof (clr_in))) {
1128 break;
1129 }
1130
1131 ent_sin = (struct sockaddr_in *)&cp->rc_addr;
1132
1133 /*
1134 * now compare, and if equivalent mark entry
1135 * for forced expiration
1136 */
1137 if (ent_sin->sin_addr.s_addr == clr_in.s_addr) {
1138 cp->rc_forced_expire = 1;
1139 }
1140 break;
1141
1142 default:
1143 /* force this assert to fail */
1144 ASSERT(clr->addr_type != clr->addr_type);
1145 }
1146 }
1147
1148 /*
1149 * This is called from nfssys() in order to clear server state
1150 * for the specified client IP Address.
1151 */
1152 void
rfs4_clear_client_state(struct nfs4clrst_args * clr)1153 rfs4_clear_client_state(struct nfs4clrst_args *clr)
1154 {
1155 (void) rfs4_dbe_walk(rfs4_client_tab, rfs4_client_scrub, clr);
1156 }
1157
1158 /*
1159 * Used to initialize the NFSv4 server's state or database. All of
1160 * the tables are created and timers are set. Only called when NFSv4
1161 * service is provided.
1162 */
1163 void
rfs4_state_init()1164 rfs4_state_init()
1165 {
1166 int start_grace;
1167 extern boolean_t rfs4_cpr_callb(void *, int);
1168 char *dss_path = NFS4_DSS_VAR_DIR;
1169 time_t start_time;
1170
1171 mutex_enter(&rfs4_state_lock);
1172
1173 /*
1174 * If the server state database has already been initialized,
1175 * skip it
1176 */
1177 if (rfs4_server_state != NULL) {
1178 mutex_exit(&rfs4_state_lock);
1179 return;
1180 }
1181
1182 rw_init(&rfs4_findclient_lock, NULL, RW_DEFAULT, NULL);
1183
1184 /*
1185 * Set the boot time. If the server
1186 * has been restarted quickly and has had the opportunity to
1187 * service clients, then the start_time needs to be bumped
1188 * regardless. A small window but it exists...
1189 */
1190 start_time = gethrestime_sec();
1191 if (rfs4_start_time < start_time)
1192 rfs4_start_time = start_time;
1193 else
1194 rfs4_start_time++;
1195
1196 /* DSS: distributed stable storage: initialise served paths list */
1197 rfs4_dss_pathlist = NULL;
1198
1199 /*
1200 * Create the first server instance, or a new one if the server has
1201 * been restarted; see above comments on rfs4_start_time. Don't
1202 * start its grace period; that will be done later, to maximise the
1203 * clients' recovery window.
1204 */
1205 start_grace = 0;
1206 rfs4_servinst_create(start_grace, 1, &dss_path);
1207
1208 /* reset the "first NFSv4 request" status */
1209 rfs4_seen_first_compound = 0;
1210
1211 /*
1212 * Add a CPR callback so that we can update client
1213 * access times to extend the lease after a suspend
1214 * and resume (using the same class as rpcmod/connmgr)
1215 */
1216 cpr_id = callb_add(rfs4_cpr_callb, 0, CB_CL_CPR_RPC, "rfs4");
1217
1218 /* set the various cache timers for table creation */
1219 if (rfs4_client_cache_time == 0)
1220 rfs4_client_cache_time = CLIENT_CACHE_TIME;
1221 if (rfs4_openowner_cache_time == 0)
1222 rfs4_openowner_cache_time = OPENOWNER_CACHE_TIME;
1223 if (rfs4_state_cache_time == 0)
1224 rfs4_state_cache_time = STATE_CACHE_TIME;
1225 if (rfs4_lo_state_cache_time == 0)
1226 rfs4_lo_state_cache_time = LO_STATE_CACHE_TIME;
1227 if (rfs4_lockowner_cache_time == 0)
1228 rfs4_lockowner_cache_time = LOCKOWNER_CACHE_TIME;
1229 if (rfs4_file_cache_time == 0)
1230 rfs4_file_cache_time = FILE_CACHE_TIME;
1231 if (rfs4_deleg_state_cache_time == 0)
1232 rfs4_deleg_state_cache_time = DELEG_STATE_CACHE_TIME;
1233
1234 /* Create the overall database to hold all server state */
1235 rfs4_server_state = rfs4_database_create(rfs4_database_debug);
1236
1237 /* Now create the individual tables */
1238 rfs4_client_cache_time *= rfs4_lease_time;
1239 rfs4_client_tab = rfs4_table_create(rfs4_server_state,
1240 "Client",
1241 rfs4_client_cache_time,
1242 2,
1243 rfs4_client_create,
1244 rfs4_client_destroy,
1245 rfs4_client_expiry,
1246 sizeof (rfs4_client_t),
1247 TABSIZE,
1248 MAXTABSZ/8, 100);
1249 rfs4_nfsclnt_idx = rfs4_index_create(rfs4_client_tab,
1250 "nfs_client_id4", nfsclnt_hash,
1251 nfsclnt_compare, nfsclnt_mkkey,
1252 TRUE);
1253 rfs4_clientid_idx = rfs4_index_create(rfs4_client_tab,
1254 "client_id", clientid_hash,
1255 clientid_compare, clientid_mkkey,
1256 FALSE);
1257
1258 rfs4_clntip_cache_time = 86400 * 365; /* about a year */
1259 rfs4_clntip_tab = rfs4_table_create(rfs4_server_state,
1260 "ClntIP",
1261 rfs4_clntip_cache_time,
1262 1,
1263 rfs4_clntip_create,
1264 rfs4_clntip_destroy,
1265 rfs4_clntip_expiry,
1266 sizeof (rfs4_clntip_t),
1267 TABSIZE,
1268 MAXTABSZ, 100);
1269 rfs4_clntip_idx = rfs4_index_create(rfs4_clntip_tab,
1270 "client_ip", clntip_hash,
1271 clntip_compare, clntip_mkkey,
1272 TRUE);
1273
1274 rfs4_openowner_cache_time *= rfs4_lease_time;
1275 rfs4_openowner_tab = rfs4_table_create(rfs4_server_state,
1276 "OpenOwner",
1277 rfs4_openowner_cache_time,
1278 1,
1279 rfs4_openowner_create,
1280 rfs4_openowner_destroy,
1281 rfs4_openowner_expiry,
1282 sizeof (rfs4_openowner_t),
1283 TABSIZE,
1284 MAXTABSZ, 100);
1285 rfs4_openowner_idx = rfs4_index_create(rfs4_openowner_tab,
1286 "open_owner4", openowner_hash,
1287 openowner_compare,
1288 openowner_mkkey, TRUE);
1289
1290 rfs4_state_cache_time *= rfs4_lease_time;
1291 rfs4_state_tab = rfs4_table_create(rfs4_server_state,
1292 "OpenStateID",
1293 rfs4_state_cache_time,
1294 3,
1295 rfs4_state_create,
1296 rfs4_state_destroy,
1297 rfs4_state_expiry,
1298 sizeof (rfs4_state_t),
1299 TABSIZE,
1300 MAXTABSZ, 100);
1301
1302 rfs4_state_owner_file_idx = rfs4_index_create(rfs4_state_tab,
1303 "Openowner-File",
1304 state_owner_file_hash,
1305 state_owner_file_compare,
1306 state_owner_file_mkkey, TRUE);
1307
1308 rfs4_state_idx = rfs4_index_create(rfs4_state_tab,
1309 "State-id", state_hash,
1310 state_compare, state_mkkey, FALSE);
1311
1312 rfs4_state_file_idx = rfs4_index_create(rfs4_state_tab,
1313 "File", state_file_hash,
1314 state_file_compare, state_file_mkkey,
1315 FALSE);
1316
1317 rfs4_lo_state_cache_time *= rfs4_lease_time;
1318 rfs4_lo_state_tab = rfs4_table_create(rfs4_server_state,
1319 "LockStateID",
1320 rfs4_lo_state_cache_time,
1321 2,
1322 rfs4_lo_state_create,
1323 rfs4_lo_state_destroy,
1324 rfs4_lo_state_expiry,
1325 sizeof (rfs4_lo_state_t),
1326 TABSIZE,
1327 MAXTABSZ, 100);
1328
1329 rfs4_lo_state_owner_idx = rfs4_index_create(rfs4_lo_state_tab,
1330 "lockownerxstate",
1331 lo_state_lo_hash,
1332 lo_state_lo_compare,
1333 lo_state_lo_mkkey, TRUE);
1334
1335 rfs4_lo_state_idx = rfs4_index_create(rfs4_lo_state_tab,
1336 "State-id",
1337 lo_state_hash, lo_state_compare,
1338 lo_state_mkkey, FALSE);
1339
1340 rfs4_lockowner_cache_time *= rfs4_lease_time;
1341
1342 rfs4_lockowner_tab = rfs4_table_create(rfs4_server_state,
1343 "Lockowner",
1344 rfs4_lockowner_cache_time,
1345 2,
1346 rfs4_lockowner_create,
1347 rfs4_lockowner_destroy,
1348 rfs4_lockowner_expiry,
1349 sizeof (rfs4_lockowner_t),
1350 TABSIZE,
1351 MAXTABSZ, 100);
1352
1353 rfs4_lockowner_idx = rfs4_index_create(rfs4_lockowner_tab,
1354 "lock_owner4", lockowner_hash,
1355 lockowner_compare,
1356 lockowner_mkkey, TRUE);
1357
1358 rfs4_lockowner_pid_idx = rfs4_index_create(rfs4_lockowner_tab,
1359 "pid", pid_hash,
1360 pid_compare, pid_mkkey,
1361 FALSE);
1362
1363 rfs4_file_cache_time *= rfs4_lease_time;
1364 rfs4_file_tab = rfs4_table_create(rfs4_server_state,
1365 "File",
1366 rfs4_file_cache_time,
1367 1,
1368 rfs4_file_create,
1369 rfs4_file_destroy,
1370 NULL,
1371 sizeof (rfs4_file_t),
1372 TABSIZE,
1373 MAXTABSZ, -1);
1374
1375 rfs4_file_idx = rfs4_index_create(rfs4_file_tab,
1376 "Filehandle", file_hash,
1377 file_compare, file_mkkey, TRUE);
1378
1379 rfs4_deleg_state_cache_time *= rfs4_lease_time;
1380 rfs4_deleg_state_tab = rfs4_table_create(rfs4_server_state,
1381 "DelegStateID",
1382 rfs4_deleg_state_cache_time,
1383 2,
1384 rfs4_deleg_state_create,
1385 rfs4_deleg_state_destroy,
1386 rfs4_deleg_state_expiry,
1387 sizeof (rfs4_deleg_state_t),
1388 TABSIZE,
1389 MAXTABSZ, 100);
1390 rfs4_deleg_idx = rfs4_index_create(rfs4_deleg_state_tab,
1391 "DelegByFileClient",
1392 deleg_hash,
1393 deleg_compare,
1394 deleg_mkkey, TRUE);
1395
1396 rfs4_deleg_state_idx = rfs4_index_create(rfs4_deleg_state_tab,
1397 "DelegState",
1398 deleg_state_hash,
1399 deleg_state_compare,
1400 deleg_state_mkkey, FALSE);
1401
1402 /*
1403 * Init the stable storage.
1404 */
1405 rfs4_ss_init();
1406
1407 rfs4_client_clrst = rfs4_clear_client_state;
1408
1409 mutex_exit(&rfs4_state_lock);
1410 }
1411
1412
1413 /*
1414 * Used at server shutdown to cleanup all of the NFSv4 server's structures
1415 * and other state.
1416 */
1417 void
rfs4_state_fini()1418 rfs4_state_fini()
1419 {
1420 rfs4_database_t *dbp;
1421
1422 mutex_enter(&rfs4_state_lock);
1423
1424 if (rfs4_server_state == NULL) {
1425 mutex_exit(&rfs4_state_lock);
1426 return;
1427 }
1428
1429 rfs4_client_clrst = NULL;
1430
1431 rfs4_set_deleg_policy(SRV_NEVER_DELEGATE);
1432 dbp = rfs4_server_state;
1433 rfs4_server_state = NULL;
1434
1435 /*
1436 * Cleanup the CPR callback.
1437 */
1438 if (cpr_id)
1439 (void) callb_delete(cpr_id);
1440
1441 rw_destroy(&rfs4_findclient_lock);
1442
1443 /* First stop all of the reaper threads in the database */
1444 rfs4_database_shutdown(dbp);
1445 /* clean up any dangling stable storage structures */
1446 rfs4_ss_fini();
1447 /* Now actually destroy/release the database and its tables */
1448 rfs4_database_destroy(dbp);
1449
1450 /* Reset the cache timers for next time */
1451 rfs4_client_cache_time = 0;
1452 rfs4_openowner_cache_time = 0;
1453 rfs4_state_cache_time = 0;
1454 rfs4_lo_state_cache_time = 0;
1455 rfs4_lockowner_cache_time = 0;
1456 rfs4_file_cache_time = 0;
1457 rfs4_deleg_state_cache_time = 0;
1458
1459 mutex_exit(&rfs4_state_lock);
1460
1461 /* destroy server instances and current instance ptr */
1462 rfs4_servinst_destroy_all();
1463
1464 /* reset the "first NFSv4 request" status */
1465 rfs4_seen_first_compound = 0;
1466
1467 /* DSS: distributed stable storage */
1468 if (rfs4_dss_oldpaths)
1469 nvlist_free(rfs4_dss_oldpaths);
1470 if (rfs4_dss_paths)
1471 nvlist_free(rfs4_dss_paths);
1472 rfs4_dss_paths = rfs4_dss_oldpaths = NULL;
1473 }
1474
1475 typedef union {
1476 struct {
1477 uint32_t start_time;
1478 uint32_t c_id;
1479 } impl_id;
1480 clientid4 id4;
1481 } cid;
1482
1483 static int foreign_stateid(stateid_t *id);
1484 static int foreign_clientid(cid *cidp);
1485 static void embed_nodeid(cid *cidp);
1486
1487 typedef union {
1488 struct {
1489 uint32_t c_id;
1490 uint32_t gen_num;
1491 } cv_impl;
1492 verifier4 confirm_verf;
1493 } scid_confirm_verf;
1494
1495 static uint32_t
clientid_hash(void * key)1496 clientid_hash(void *key)
1497 {
1498 cid *idp = key;
1499
1500 return (idp->impl_id.c_id);
1501 }
1502
1503 static bool_t
clientid_compare(rfs4_entry_t entry,void * key)1504 clientid_compare(rfs4_entry_t entry, void *key)
1505 {
1506 rfs4_client_t *cp = (rfs4_client_t *)entry;
1507 clientid4 *idp = key;
1508
1509 return (*idp == cp->rc_clientid);
1510 }
1511
1512 static void *
clientid_mkkey(rfs4_entry_t entry)1513 clientid_mkkey(rfs4_entry_t entry)
1514 {
1515 rfs4_client_t *cp = (rfs4_client_t *)entry;
1516
1517 return (&cp->rc_clientid);
1518 }
1519
1520 static uint32_t
nfsclnt_hash(void * key)1521 nfsclnt_hash(void *key)
1522 {
1523 nfs_client_id4 *client = key;
1524 int i;
1525 uint32_t hash = 0;
1526
1527 for (i = 0; i < client->id_len; i++) {
1528 hash <<= 1;
1529 hash += (uint_t)client->id_val[i];
1530 }
1531 return (hash);
1532 }
1533
1534
1535 static bool_t
nfsclnt_compare(rfs4_entry_t entry,void * key)1536 nfsclnt_compare(rfs4_entry_t entry, void *key)
1537 {
1538 rfs4_client_t *cp = (rfs4_client_t *)entry;
1539 nfs_client_id4 *nfs_client = key;
1540
1541 if (cp->rc_nfs_client.id_len != nfs_client->id_len)
1542 return (FALSE);
1543
1544 return (bcmp(cp->rc_nfs_client.id_val, nfs_client->id_val,
1545 nfs_client->id_len) == 0);
1546 }
1547
1548 static void *
nfsclnt_mkkey(rfs4_entry_t entry)1549 nfsclnt_mkkey(rfs4_entry_t entry)
1550 {
1551 rfs4_client_t *cp = (rfs4_client_t *)entry;
1552
1553 return (&cp->rc_nfs_client);
1554 }
1555
1556 static bool_t
rfs4_client_expiry(rfs4_entry_t u_entry)1557 rfs4_client_expiry(rfs4_entry_t u_entry)
1558 {
1559 rfs4_client_t *cp = (rfs4_client_t *)u_entry;
1560 bool_t cp_expired;
1561
1562 if (rfs4_dbe_is_invalid(cp->rc_dbe)) {
1563 cp->rc_ss_remove = 1;
1564 return (TRUE);
1565 }
1566 /*
1567 * If the sysadmin has used clear_locks for this
1568 * entry then forced_expire will be set and we
1569 * want this entry to be reaped. Or the entry
1570 * has exceeded its lease period.
1571 */
1572 cp_expired = (cp->rc_forced_expire ||
1573 (gethrestime_sec() - cp->rc_last_access
1574 > rfs4_lease_time));
1575
1576 if (!cp->rc_ss_remove && cp_expired)
1577 cp->rc_ss_remove = 1;
1578 return (cp_expired);
1579 }
1580
1581 /*
1582 * Remove the leaf file from all distributed stable storage paths.
1583 */
1584 static void
rfs4_dss_remove_cpleaf(rfs4_client_t * cp)1585 rfs4_dss_remove_cpleaf(rfs4_client_t *cp)
1586 {
1587 rfs4_servinst_t *sip;
1588 char *leaf = cp->rc_ss_pn->leaf;
1589
1590 /*
1591 * since the state files are written to all DSS
1592 * paths we must remove this leaf file instance
1593 * from all server instances.
1594 */
1595
1596 mutex_enter(&rfs4_servinst_lock);
1597 for (sip = rfs4_cur_servinst; sip != NULL; sip = sip->prev) {
1598 /* remove the leaf file associated with this server instance */
1599 rfs4_dss_remove_leaf(sip, NFS4_DSS_STATE_LEAF, leaf);
1600 }
1601 mutex_exit(&rfs4_servinst_lock);
1602 }
1603
1604 static void
rfs4_dss_remove_leaf(rfs4_servinst_t * sip,char * dir_leaf,char * leaf)1605 rfs4_dss_remove_leaf(rfs4_servinst_t *sip, char *dir_leaf, char *leaf)
1606 {
1607 int i, npaths = sip->dss_npaths;
1608
1609 for (i = 0; i < npaths; i++) {
1610 rfs4_dss_path_t *dss_path = sip->dss_paths[i];
1611 char *path, *dir;
1612 size_t pathlen;
1613
1614 /* the HA-NFSv4 path might have been failed-over away from us */
1615 if (dss_path == NULL)
1616 continue;
1617
1618 dir = dss_path->path;
1619
1620 /* allow 3 extra bytes for two '/' & a NUL */
1621 pathlen = strlen(dir) + strlen(dir_leaf) + strlen(leaf) + 3;
1622 path = kmem_alloc(pathlen, KM_SLEEP);
1623 (void) sprintf(path, "%s/%s/%s", dir, dir_leaf, leaf);
1624
1625 (void) vn_remove(path, UIO_SYSSPACE, RMFILE);
1626
1627 kmem_free(path, pathlen);
1628 }
1629 }
1630
1631 static void
rfs4_client_destroy(rfs4_entry_t u_entry)1632 rfs4_client_destroy(rfs4_entry_t u_entry)
1633 {
1634 rfs4_client_t *cp = (rfs4_client_t *)u_entry;
1635
1636 mutex_destroy(cp->rc_cbinfo.cb_lock);
1637 cv_destroy(cp->rc_cbinfo.cb_cv);
1638 cv_destroy(cp->rc_cbinfo.cb_cv_nullcaller);
1639 list_destroy(&cp->rc_openownerlist);
1640
1641 /* free callback info */
1642 rfs4_cbinfo_free(&cp->rc_cbinfo);
1643
1644 if (cp->rc_cp_confirmed)
1645 rfs4_client_rele(cp->rc_cp_confirmed);
1646
1647 if (cp->rc_ss_pn) {
1648 /* check if the stable storage files need to be removed */
1649 if (cp->rc_ss_remove)
1650 rfs4_dss_remove_cpleaf(cp);
1651 rfs4_ss_pnfree(cp->rc_ss_pn);
1652 }
1653
1654 /* Free the client supplied client id */
1655 kmem_free(cp->rc_nfs_client.id_val, cp->rc_nfs_client.id_len);
1656
1657 if (cp->rc_sysidt != LM_NOSYSID)
1658 lm_free_sysidt(cp->rc_sysidt);
1659 }
1660
1661 static bool_t
rfs4_client_create(rfs4_entry_t u_entry,void * arg)1662 rfs4_client_create(rfs4_entry_t u_entry, void *arg)
1663 {
1664 rfs4_client_t *cp = (rfs4_client_t *)u_entry;
1665 nfs_client_id4 *client = (nfs_client_id4 *)arg;
1666 struct sockaddr *ca;
1667 cid *cidp;
1668 scid_confirm_verf *scvp;
1669
1670 /* Get a clientid to give to the client */
1671 cidp = (cid *)&cp->rc_clientid;
1672 cidp->impl_id.start_time = rfs4_start_time;
1673 cidp->impl_id.c_id = (uint32_t)rfs4_dbe_getid(cp->rc_dbe);
1674
1675 /* If we are booted as a cluster node, embed our nodeid */
1676 if (cluster_bootflags & CLUSTER_BOOTED)
1677 embed_nodeid(cidp);
1678
1679 /* Allocate and copy client's client id value */
1680 cp->rc_nfs_client.id_val = kmem_alloc(client->id_len, KM_SLEEP);
1681 cp->rc_nfs_client.id_len = client->id_len;
1682 bcopy(client->id_val, cp->rc_nfs_client.id_val, client->id_len);
1683 cp->rc_nfs_client.verifier = client->verifier;
1684
1685 /* Copy client's IP address */
1686 ca = client->cl_addr;
1687 if (ca->sa_family == AF_INET)
1688 bcopy(ca, &cp->rc_addr, sizeof (struct sockaddr_in));
1689 else if (ca->sa_family == AF_INET6)
1690 bcopy(ca, &cp->rc_addr, sizeof (struct sockaddr_in6));
1691 cp->rc_nfs_client.cl_addr = (struct sockaddr *)&cp->rc_addr;
1692
1693 /* Init the value for the SETCLIENTID_CONFIRM verifier */
1694 scvp = (scid_confirm_verf *)&cp->rc_confirm_verf;
1695 scvp->cv_impl.c_id = cidp->impl_id.c_id;
1696 scvp->cv_impl.gen_num = 0;
1697
1698 /* An F_UNLKSYS has been done for this client */
1699 cp->rc_unlksys_completed = FALSE;
1700
1701 /* We need the client to ack us */
1702 cp->rc_need_confirm = TRUE;
1703 cp->rc_cp_confirmed = NULL;
1704
1705 /* TRUE all the time until the callback path actually fails */
1706 cp->rc_cbinfo.cb_notified_of_cb_path_down = TRUE;
1707
1708 /* Initialize the access time to now */
1709 cp->rc_last_access = gethrestime_sec();
1710
1711 cp->rc_cr_set = NULL;
1712
1713 cp->rc_sysidt = LM_NOSYSID;
1714
1715 list_create(&cp->rc_openownerlist, sizeof (rfs4_openowner_t),
1716 offsetof(rfs4_openowner_t, ro_node));
1717
1718 /* set up the callback control structure */
1719 cp->rc_cbinfo.cb_state = CB_UNINIT;
1720 mutex_init(cp->rc_cbinfo.cb_lock, NULL, MUTEX_DEFAULT, NULL);
1721 cv_init(cp->rc_cbinfo.cb_cv, NULL, CV_DEFAULT, NULL);
1722 cv_init(cp->rc_cbinfo.cb_cv_nullcaller, NULL, CV_DEFAULT, NULL);
1723
1724 /*
1725 * Associate the client_t with the current server instance.
1726 * The hold is solely to satisfy the calling requirement of
1727 * rfs4_servinst_assign(). In this case it's not strictly necessary.
1728 */
1729 rfs4_dbe_hold(cp->rc_dbe);
1730 rfs4_servinst_assign(cp, rfs4_cur_servinst);
1731 rfs4_dbe_rele(cp->rc_dbe);
1732
1733 return (TRUE);
1734 }
1735
1736 /*
1737 * Caller wants to generate/update the setclientid_confirm verifier
1738 * associated with a client. This is done during the SETCLIENTID
1739 * processing.
1740 */
1741 void
rfs4_client_scv_next(rfs4_client_t * cp)1742 rfs4_client_scv_next(rfs4_client_t *cp)
1743 {
1744 scid_confirm_verf *scvp;
1745
1746 /* Init the value for the SETCLIENTID_CONFIRM verifier */
1747 scvp = (scid_confirm_verf *)&cp->rc_confirm_verf;
1748 scvp->cv_impl.gen_num++;
1749 }
1750
1751 void
rfs4_client_rele(rfs4_client_t * cp)1752 rfs4_client_rele(rfs4_client_t *cp)
1753 {
1754 rfs4_dbe_rele(cp->rc_dbe);
1755 }
1756
1757 rfs4_client_t *
rfs4_findclient(nfs_client_id4 * client,bool_t * create,rfs4_client_t * oldcp)1758 rfs4_findclient(nfs_client_id4 *client, bool_t *create, rfs4_client_t *oldcp)
1759 {
1760 rfs4_client_t *cp;
1761
1762
1763 if (oldcp) {
1764 rw_enter(&rfs4_findclient_lock, RW_WRITER);
1765 rfs4_dbe_hide(oldcp->rc_dbe);
1766 } else {
1767 rw_enter(&rfs4_findclient_lock, RW_READER);
1768 }
1769
1770 cp = (rfs4_client_t *)rfs4_dbsearch(rfs4_nfsclnt_idx, client,
1771 create, (void *)client, RFS4_DBS_VALID);
1772
1773 if (oldcp)
1774 rfs4_dbe_unhide(oldcp->rc_dbe);
1775
1776 rw_exit(&rfs4_findclient_lock);
1777
1778 return (cp);
1779 }
1780
1781 rfs4_client_t *
rfs4_findclient_by_id(clientid4 clientid,bool_t find_unconfirmed)1782 rfs4_findclient_by_id(clientid4 clientid, bool_t find_unconfirmed)
1783 {
1784 rfs4_client_t *cp;
1785 bool_t create = FALSE;
1786 cid *cidp = (cid *)&clientid;
1787
1788 /* If we're a cluster and the nodeid isn't right, short-circuit */
1789 if (cluster_bootflags & CLUSTER_BOOTED && foreign_clientid(cidp))
1790 return (NULL);
1791
1792 rw_enter(&rfs4_findclient_lock, RW_READER);
1793
1794 cp = (rfs4_client_t *)rfs4_dbsearch(rfs4_clientid_idx, &clientid,
1795 &create, NULL, RFS4_DBS_VALID);
1796
1797 rw_exit(&rfs4_findclient_lock);
1798
1799 if (cp && cp->rc_need_confirm && find_unconfirmed == FALSE) {
1800 rfs4_client_rele(cp);
1801 return (NULL);
1802 } else {
1803 return (cp);
1804 }
1805 }
1806
1807 static uint32_t
clntip_hash(void * key)1808 clntip_hash(void *key)
1809 {
1810 struct sockaddr *addr = key;
1811 int i, len = 0;
1812 uint32_t hash = 0;
1813 char *ptr;
1814
1815 if (addr->sa_family == AF_INET) {
1816 struct sockaddr_in *a = (struct sockaddr_in *)addr;
1817 len = sizeof (struct in_addr);
1818 ptr = (char *)&a->sin_addr;
1819 } else if (addr->sa_family == AF_INET6) {
1820 struct sockaddr_in6 *a = (struct sockaddr_in6 *)addr;
1821 len = sizeof (struct in6_addr);
1822 ptr = (char *)&a->sin6_addr;
1823 } else
1824 return (0);
1825
1826 for (i = 0; i < len; i++) {
1827 hash <<= 1;
1828 hash += (uint_t)ptr[i];
1829 }
1830 return (hash);
1831 }
1832
1833 static bool_t
clntip_compare(rfs4_entry_t entry,void * key)1834 clntip_compare(rfs4_entry_t entry, void *key)
1835 {
1836 rfs4_clntip_t *cp = (rfs4_clntip_t *)entry;
1837 struct sockaddr *addr = key;
1838 int len = 0;
1839 char *p1, *p2;
1840
1841 if (addr->sa_family == AF_INET) {
1842 struct sockaddr_in *a1 = (struct sockaddr_in *)&cp->ri_addr;
1843 struct sockaddr_in *a2 = (struct sockaddr_in *)addr;
1844 len = sizeof (struct in_addr);
1845 p1 = (char *)&a1->sin_addr;
1846 p2 = (char *)&a2->sin_addr;
1847 } else if (addr->sa_family == AF_INET6) {
1848 struct sockaddr_in6 *a1 = (struct sockaddr_in6 *)&cp->ri_addr;
1849 struct sockaddr_in6 *a2 = (struct sockaddr_in6 *)addr;
1850 len = sizeof (struct in6_addr);
1851 p1 = (char *)&a1->sin6_addr;
1852 p2 = (char *)&a2->sin6_addr;
1853 } else
1854 return (0);
1855
1856 return (bcmp(p1, p2, len) == 0);
1857 }
1858
1859 static void *
clntip_mkkey(rfs4_entry_t entry)1860 clntip_mkkey(rfs4_entry_t entry)
1861 {
1862 rfs4_clntip_t *cp = (rfs4_clntip_t *)entry;
1863
1864 return (&cp->ri_addr);
1865 }
1866
1867 static bool_t
rfs4_clntip_expiry(rfs4_entry_t u_entry)1868 rfs4_clntip_expiry(rfs4_entry_t u_entry)
1869 {
1870 rfs4_clntip_t *cp = (rfs4_clntip_t *)u_entry;
1871
1872 if (rfs4_dbe_is_invalid(cp->ri_dbe))
1873 return (TRUE);
1874 return (FALSE);
1875 }
1876
1877 /* ARGSUSED */
1878 static void
rfs4_clntip_destroy(rfs4_entry_t u_entry)1879 rfs4_clntip_destroy(rfs4_entry_t u_entry)
1880 {
1881 }
1882
1883 static bool_t
rfs4_clntip_create(rfs4_entry_t u_entry,void * arg)1884 rfs4_clntip_create(rfs4_entry_t u_entry, void *arg)
1885 {
1886 rfs4_clntip_t *cp = (rfs4_clntip_t *)u_entry;
1887 struct sockaddr *ca = (struct sockaddr *)arg;
1888
1889 /* Copy client's IP address */
1890 if (ca->sa_family == AF_INET)
1891 bcopy(ca, &cp->ri_addr, sizeof (struct sockaddr_in));
1892 else if (ca->sa_family == AF_INET6)
1893 bcopy(ca, &cp->ri_addr, sizeof (struct sockaddr_in6));
1894 else
1895 return (FALSE);
1896 cp->ri_no_referrals = 1;
1897
1898 return (TRUE);
1899 }
1900
1901 rfs4_clntip_t *
rfs4_find_clntip(struct sockaddr * addr,bool_t * create)1902 rfs4_find_clntip(struct sockaddr *addr, bool_t *create)
1903 {
1904 rfs4_clntip_t *cp;
1905
1906 rw_enter(&rfs4_findclient_lock, RW_READER);
1907
1908 cp = (rfs4_clntip_t *)rfs4_dbsearch(rfs4_clntip_idx, addr,
1909 create, addr, RFS4_DBS_VALID);
1910
1911 rw_exit(&rfs4_findclient_lock);
1912
1913 return (cp);
1914 }
1915
1916 void
rfs4_invalidate_clntip(struct sockaddr * addr)1917 rfs4_invalidate_clntip(struct sockaddr *addr)
1918 {
1919 rfs4_clntip_t *cp;
1920 bool_t create = FALSE;
1921
1922 rw_enter(&rfs4_findclient_lock, RW_READER);
1923
1924 cp = (rfs4_clntip_t *)rfs4_dbsearch(rfs4_clntip_idx, addr,
1925 &create, NULL, RFS4_DBS_VALID);
1926 if (cp == NULL) {
1927 rw_exit(&rfs4_findclient_lock);
1928 return;
1929 }
1930 rfs4_dbe_invalidate(cp->ri_dbe);
1931 rfs4_dbe_rele(cp->ri_dbe);
1932
1933 rw_exit(&rfs4_findclient_lock);
1934 }
1935
1936 bool_t
rfs4_lease_expired(rfs4_client_t * cp)1937 rfs4_lease_expired(rfs4_client_t *cp)
1938 {
1939 bool_t rc;
1940
1941 rfs4_dbe_lock(cp->rc_dbe);
1942
1943 /*
1944 * If the admin has executed clear_locks for this
1945 * client id, force expire will be set, so no need
1946 * to calculate anything because it's "outa here".
1947 */
1948 if (cp->rc_forced_expire) {
1949 rc = TRUE;
1950 } else {
1951 rc = (gethrestime_sec() - cp->rc_last_access > rfs4_lease_time);
1952 }
1953
1954 /*
1955 * If the lease has expired we will also want
1956 * to remove any stable storage state data. So
1957 * mark the client id accordingly.
1958 */
1959 if (!cp->rc_ss_remove)
1960 cp->rc_ss_remove = (rc == TRUE);
1961
1962 rfs4_dbe_unlock(cp->rc_dbe);
1963
1964 return (rc);
1965 }
1966
1967 void
rfs4_update_lease(rfs4_client_t * cp)1968 rfs4_update_lease(rfs4_client_t *cp)
1969 {
1970 rfs4_dbe_lock(cp->rc_dbe);
1971 if (!cp->rc_forced_expire)
1972 cp->rc_last_access = gethrestime_sec();
1973 rfs4_dbe_unlock(cp->rc_dbe);
1974 }
1975
1976
1977 static bool_t
EQOPENOWNER(open_owner4 * a,open_owner4 * b)1978 EQOPENOWNER(open_owner4 *a, open_owner4 *b)
1979 {
1980 bool_t rc;
1981
1982 if (a->clientid != b->clientid)
1983 return (FALSE);
1984
1985 if (a->owner_len != b->owner_len)
1986 return (FALSE);
1987
1988 rc = (bcmp(a->owner_val, b->owner_val, a->owner_len) == 0);
1989
1990 return (rc);
1991 }
1992
1993 static uint_t
openowner_hash(void * key)1994 openowner_hash(void *key)
1995 {
1996 int i;
1997 open_owner4 *openowner = key;
1998 uint_t hash = 0;
1999
2000 for (i = 0; i < openowner->owner_len; i++) {
2001 hash <<= 4;
2002 hash += (uint_t)openowner->owner_val[i];
2003 }
2004 hash += (uint_t)openowner->clientid;
2005 hash |= (openowner->clientid >> 32);
2006
2007 return (hash);
2008 }
2009
2010 static bool_t
openowner_compare(rfs4_entry_t u_entry,void * key)2011 openowner_compare(rfs4_entry_t u_entry, void *key)
2012 {
2013 rfs4_openowner_t *oo = (rfs4_openowner_t *)u_entry;
2014 open_owner4 *arg = key;
2015
2016 return (EQOPENOWNER(&oo->ro_owner, arg));
2017 }
2018
2019 void *
openowner_mkkey(rfs4_entry_t u_entry)2020 openowner_mkkey(rfs4_entry_t u_entry)
2021 {
2022 rfs4_openowner_t *oo = (rfs4_openowner_t *)u_entry;
2023
2024 return (&oo->ro_owner);
2025 }
2026
2027 /* ARGSUSED */
2028 static bool_t
rfs4_openowner_expiry(rfs4_entry_t u_entry)2029 rfs4_openowner_expiry(rfs4_entry_t u_entry)
2030 {
2031 /* openstateid held us and did all needed delay */
2032 return (TRUE);
2033 }
2034
2035 static void
rfs4_openowner_destroy(rfs4_entry_t u_entry)2036 rfs4_openowner_destroy(rfs4_entry_t u_entry)
2037 {
2038 rfs4_openowner_t *oo = (rfs4_openowner_t *)u_entry;
2039
2040 /* Remove open owner from client's lists of open owners */
2041 rfs4_dbe_lock(oo->ro_client->rc_dbe);
2042 list_remove(&oo->ro_client->rc_openownerlist, oo);
2043 rfs4_dbe_unlock(oo->ro_client->rc_dbe);
2044
2045 /* One less reference to the client */
2046 rfs4_client_rele(oo->ro_client);
2047 oo->ro_client = NULL;
2048
2049 /* Free the last reply for this lock owner */
2050 rfs4_free_reply(&oo->ro_reply);
2051
2052 if (oo->ro_reply_fh.nfs_fh4_val) {
2053 kmem_free(oo->ro_reply_fh.nfs_fh4_val,
2054 oo->ro_reply_fh.nfs_fh4_len);
2055 oo->ro_reply_fh.nfs_fh4_val = NULL;
2056 oo->ro_reply_fh.nfs_fh4_len = 0;
2057 }
2058
2059 rfs4_sw_destroy(&oo->ro_sw);
2060 list_destroy(&oo->ro_statelist);
2061
2062 /* Free the lock owner id */
2063 kmem_free(oo->ro_owner.owner_val, oo->ro_owner.owner_len);
2064 }
2065
2066 void
rfs4_openowner_rele(rfs4_openowner_t * oo)2067 rfs4_openowner_rele(rfs4_openowner_t *oo)
2068 {
2069 rfs4_dbe_rele(oo->ro_dbe);
2070 }
2071
2072 static bool_t
rfs4_openowner_create(rfs4_entry_t u_entry,void * arg)2073 rfs4_openowner_create(rfs4_entry_t u_entry, void *arg)
2074 {
2075 rfs4_openowner_t *oo = (rfs4_openowner_t *)u_entry;
2076 rfs4_openowner_t *argp = (rfs4_openowner_t *)arg;
2077 open_owner4 *openowner = &argp->ro_owner;
2078 seqid4 seqid = argp->ro_open_seqid;
2079 rfs4_client_t *cp;
2080 bool_t create = FALSE;
2081
2082 rw_enter(&rfs4_findclient_lock, RW_READER);
2083
2084 cp = (rfs4_client_t *)rfs4_dbsearch(rfs4_clientid_idx,
2085 &openowner->clientid,
2086 &create, NULL, RFS4_DBS_VALID);
2087
2088 rw_exit(&rfs4_findclient_lock);
2089
2090 if (cp == NULL)
2091 return (FALSE);
2092
2093 oo->ro_reply_fh.nfs_fh4_len = 0;
2094 oo->ro_reply_fh.nfs_fh4_val = NULL;
2095
2096 oo->ro_owner.clientid = openowner->clientid;
2097 oo->ro_owner.owner_val =
2098 kmem_alloc(openowner->owner_len, KM_SLEEP);
2099
2100 bcopy(openowner->owner_val,
2101 oo->ro_owner.owner_val, openowner->owner_len);
2102
2103 oo->ro_owner.owner_len = openowner->owner_len;
2104
2105 oo->ro_need_confirm = TRUE;
2106
2107 rfs4_sw_init(&oo->ro_sw);
2108
2109 oo->ro_open_seqid = seqid;
2110 bzero(&oo->ro_reply, sizeof (nfs_resop4));
2111 oo->ro_client = cp;
2112 oo->ro_cr_set = NULL;
2113
2114 list_create(&oo->ro_statelist, sizeof (rfs4_state_t),
2115 offsetof(rfs4_state_t, rs_node));
2116
2117 /* Insert openowner into client's open owner list */
2118 rfs4_dbe_lock(cp->rc_dbe);
2119 list_insert_tail(&cp->rc_openownerlist, oo);
2120 rfs4_dbe_unlock(cp->rc_dbe);
2121
2122 return (TRUE);
2123 }
2124
2125 rfs4_openowner_t *
rfs4_findopenowner(open_owner4 * openowner,bool_t * create,seqid4 seqid)2126 rfs4_findopenowner(open_owner4 *openowner, bool_t *create, seqid4 seqid)
2127 {
2128 rfs4_openowner_t *oo;
2129 rfs4_openowner_t arg;
2130
2131 arg.ro_owner = *openowner;
2132 arg.ro_open_seqid = seqid;
2133 oo = (rfs4_openowner_t *)rfs4_dbsearch(rfs4_openowner_idx, openowner,
2134 create, &arg, RFS4_DBS_VALID);
2135
2136 return (oo);
2137 }
2138
2139 void
rfs4_update_open_sequence(rfs4_openowner_t * oo)2140 rfs4_update_open_sequence(rfs4_openowner_t *oo)
2141 {
2142
2143 rfs4_dbe_lock(oo->ro_dbe);
2144
2145 oo->ro_open_seqid++;
2146
2147 rfs4_dbe_unlock(oo->ro_dbe);
2148 }
2149
2150 void
rfs4_update_open_resp(rfs4_openowner_t * oo,nfs_resop4 * resp,nfs_fh4 * fh)2151 rfs4_update_open_resp(rfs4_openowner_t *oo, nfs_resop4 *resp, nfs_fh4 *fh)
2152 {
2153
2154 rfs4_dbe_lock(oo->ro_dbe);
2155
2156 rfs4_free_reply(&oo->ro_reply);
2157
2158 rfs4_copy_reply(&oo->ro_reply, resp);
2159
2160 /* Save the filehandle if provided and free if not used */
2161 if (resp->nfs_resop4_u.opopen.status == NFS4_OK &&
2162 fh && fh->nfs_fh4_len) {
2163 if (oo->ro_reply_fh.nfs_fh4_val == NULL)
2164 oo->ro_reply_fh.nfs_fh4_val =
2165 kmem_alloc(fh->nfs_fh4_len, KM_SLEEP);
2166 nfs_fh4_copy(fh, &oo->ro_reply_fh);
2167 } else {
2168 if (oo->ro_reply_fh.nfs_fh4_val) {
2169 kmem_free(oo->ro_reply_fh.nfs_fh4_val,
2170 oo->ro_reply_fh.nfs_fh4_len);
2171 oo->ro_reply_fh.nfs_fh4_val = NULL;
2172 oo->ro_reply_fh.nfs_fh4_len = 0;
2173 }
2174 }
2175
2176 rfs4_dbe_unlock(oo->ro_dbe);
2177 }
2178
2179 static bool_t
lockowner_compare(rfs4_entry_t u_entry,void * key)2180 lockowner_compare(rfs4_entry_t u_entry, void *key)
2181 {
2182 rfs4_lockowner_t *lo = (rfs4_lockowner_t *)u_entry;
2183 lock_owner4 *b = (lock_owner4 *)key;
2184
2185 if (lo->rl_owner.clientid != b->clientid)
2186 return (FALSE);
2187
2188 if (lo->rl_owner.owner_len != b->owner_len)
2189 return (FALSE);
2190
2191 return (bcmp(lo->rl_owner.owner_val, b->owner_val,
2192 lo->rl_owner.owner_len) == 0);
2193 }
2194
2195 void *
lockowner_mkkey(rfs4_entry_t u_entry)2196 lockowner_mkkey(rfs4_entry_t u_entry)
2197 {
2198 rfs4_lockowner_t *lo = (rfs4_lockowner_t *)u_entry;
2199
2200 return (&lo->rl_owner);
2201 }
2202
2203 static uint32_t
lockowner_hash(void * key)2204 lockowner_hash(void *key)
2205 {
2206 int i;
2207 lock_owner4 *lockowner = key;
2208 uint_t hash = 0;
2209
2210 for (i = 0; i < lockowner->owner_len; i++) {
2211 hash <<= 4;
2212 hash += (uint_t)lockowner->owner_val[i];
2213 }
2214 hash += (uint_t)lockowner->clientid;
2215 hash |= (lockowner->clientid >> 32);
2216
2217 return (hash);
2218 }
2219
2220 static uint32_t
pid_hash(void * key)2221 pid_hash(void *key)
2222 {
2223 return ((uint32_t)(uintptr_t)key);
2224 }
2225
2226 static void *
pid_mkkey(rfs4_entry_t u_entry)2227 pid_mkkey(rfs4_entry_t u_entry)
2228 {
2229 rfs4_lockowner_t *lo = (rfs4_lockowner_t *)u_entry;
2230
2231 return ((void *)(uintptr_t)lo->rl_pid);
2232 }
2233
2234 static bool_t
pid_compare(rfs4_entry_t u_entry,void * key)2235 pid_compare(rfs4_entry_t u_entry, void *key)
2236 {
2237 rfs4_lockowner_t *lo = (rfs4_lockowner_t *)u_entry;
2238
2239 return (lo->rl_pid == (pid_t)(uintptr_t)key);
2240 }
2241
2242 static void
rfs4_lockowner_destroy(rfs4_entry_t u_entry)2243 rfs4_lockowner_destroy(rfs4_entry_t u_entry)
2244 {
2245 rfs4_lockowner_t *lo = (rfs4_lockowner_t *)u_entry;
2246
2247 /* Free the lock owner id */
2248 kmem_free(lo->rl_owner.owner_val, lo->rl_owner.owner_len);
2249 rfs4_client_rele(lo->rl_client);
2250 }
2251
2252 void
rfs4_lockowner_rele(rfs4_lockowner_t * lo)2253 rfs4_lockowner_rele(rfs4_lockowner_t *lo)
2254 {
2255 rfs4_dbe_rele(lo->rl_dbe);
2256 }
2257
2258 /* ARGSUSED */
2259 static bool_t
rfs4_lockowner_expiry(rfs4_entry_t u_entry)2260 rfs4_lockowner_expiry(rfs4_entry_t u_entry)
2261 {
2262 /*
2263 * Since expiry is called with no other references on
2264 * this struct, go ahead and have it removed.
2265 */
2266 return (TRUE);
2267 }
2268
2269 static bool_t
rfs4_lockowner_create(rfs4_entry_t u_entry,void * arg)2270 rfs4_lockowner_create(rfs4_entry_t u_entry, void *arg)
2271 {
2272 rfs4_lockowner_t *lo = (rfs4_lockowner_t *)u_entry;
2273 lock_owner4 *lockowner = (lock_owner4 *)arg;
2274 rfs4_client_t *cp;
2275 bool_t create = FALSE;
2276
2277 rw_enter(&rfs4_findclient_lock, RW_READER);
2278
2279 cp = (rfs4_client_t *)rfs4_dbsearch(rfs4_clientid_idx,
2280 &lockowner->clientid,
2281 &create, NULL, RFS4_DBS_VALID);
2282
2283 rw_exit(&rfs4_findclient_lock);
2284
2285 if (cp == NULL)
2286 return (FALSE);
2287
2288 /* Reference client */
2289 lo->rl_client = cp;
2290 lo->rl_owner.clientid = lockowner->clientid;
2291 lo->rl_owner.owner_val = kmem_alloc(lockowner->owner_len, KM_SLEEP);
2292 bcopy(lockowner->owner_val, lo->rl_owner.owner_val,
2293 lockowner->owner_len);
2294 lo->rl_owner.owner_len = lockowner->owner_len;
2295 lo->rl_pid = rfs4_dbe_getid(lo->rl_dbe);
2296
2297 return (TRUE);
2298 }
2299
2300 rfs4_lockowner_t *
rfs4_findlockowner(lock_owner4 * lockowner,bool_t * create)2301 rfs4_findlockowner(lock_owner4 *lockowner, bool_t *create)
2302 {
2303 rfs4_lockowner_t *lo;
2304
2305 lo = (rfs4_lockowner_t *)rfs4_dbsearch(rfs4_lockowner_idx, lockowner,
2306 create, lockowner, RFS4_DBS_VALID);
2307
2308 return (lo);
2309 }
2310
2311 rfs4_lockowner_t *
rfs4_findlockowner_by_pid(pid_t pid)2312 rfs4_findlockowner_by_pid(pid_t pid)
2313 {
2314 rfs4_lockowner_t *lo;
2315 bool_t create = FALSE;
2316
2317 lo = (rfs4_lockowner_t *)rfs4_dbsearch(rfs4_lockowner_pid_idx,
2318 (void *)(uintptr_t)pid, &create, NULL, RFS4_DBS_VALID);
2319
2320 return (lo);
2321 }
2322
2323
2324 static uint32_t
file_hash(void * key)2325 file_hash(void *key)
2326 {
2327 return (ADDRHASH(key));
2328 }
2329
2330 static void *
file_mkkey(rfs4_entry_t u_entry)2331 file_mkkey(rfs4_entry_t u_entry)
2332 {
2333 rfs4_file_t *fp = (rfs4_file_t *)u_entry;
2334
2335 return (fp->rf_vp);
2336 }
2337
2338 static bool_t
file_compare(rfs4_entry_t u_entry,void * key)2339 file_compare(rfs4_entry_t u_entry, void *key)
2340 {
2341 rfs4_file_t *fp = (rfs4_file_t *)u_entry;
2342
2343 return (fp->rf_vp == (vnode_t *)key);
2344 }
2345
2346 static void
rfs4_file_destroy(rfs4_entry_t u_entry)2347 rfs4_file_destroy(rfs4_entry_t u_entry)
2348 {
2349 rfs4_file_t *fp = (rfs4_file_t *)u_entry;
2350
2351 list_destroy(&fp->rf_delegstatelist);
2352
2353 if (fp->rf_filehandle.nfs_fh4_val)
2354 kmem_free(fp->rf_filehandle.nfs_fh4_val,
2355 fp->rf_filehandle.nfs_fh4_len);
2356 cv_destroy(fp->rf_dinfo.rd_recall_cv);
2357 if (fp->rf_vp) {
2358 vnode_t *vp = fp->rf_vp;
2359
2360 mutex_enter(&vp->v_vsd_lock);
2361 (void) vsd_set(vp, nfs4_srv_vkey, NULL);
2362 mutex_exit(&vp->v_vsd_lock);
2363 VN_RELE(vp);
2364 fp->rf_vp = NULL;
2365 }
2366 rw_destroy(&fp->rf_file_rwlock);
2367 }
2368
2369 /*
2370 * Used to unlock the underlying dbe struct only
2371 */
2372 void
rfs4_file_rele(rfs4_file_t * fp)2373 rfs4_file_rele(rfs4_file_t *fp)
2374 {
2375 rfs4_dbe_rele(fp->rf_dbe);
2376 }
2377
2378 typedef struct {
2379 vnode_t *vp;
2380 nfs_fh4 *fh;
2381 } rfs4_fcreate_arg;
2382
2383 static bool_t
rfs4_file_create(rfs4_entry_t u_entry,void * arg)2384 rfs4_file_create(rfs4_entry_t u_entry, void *arg)
2385 {
2386 rfs4_file_t *fp = (rfs4_file_t *)u_entry;
2387 rfs4_fcreate_arg *ap = (rfs4_fcreate_arg *)arg;
2388 vnode_t *vp = ap->vp;
2389 nfs_fh4 *fh = ap->fh;
2390
2391 VN_HOLD(vp);
2392
2393 fp->rf_filehandle.nfs_fh4_len = 0;
2394 fp->rf_filehandle.nfs_fh4_val = NULL;
2395 ASSERT(fh && fh->nfs_fh4_len);
2396 if (fh && fh->nfs_fh4_len) {
2397 fp->rf_filehandle.nfs_fh4_val =
2398 kmem_alloc(fh->nfs_fh4_len, KM_SLEEP);
2399 nfs_fh4_copy(fh, &fp->rf_filehandle);
2400 }
2401 fp->rf_vp = vp;
2402
2403 list_create(&fp->rf_delegstatelist, sizeof (rfs4_deleg_state_t),
2404 offsetof(rfs4_deleg_state_t, rds_node));
2405
2406 fp->rf_share_deny = fp->rf_share_access = fp->rf_access_read = 0;
2407 fp->rf_access_write = fp->rf_deny_read = fp->rf_deny_write = 0;
2408
2409 mutex_init(fp->rf_dinfo.rd_recall_lock, NULL, MUTEX_DEFAULT, NULL);
2410 cv_init(fp->rf_dinfo.rd_recall_cv, NULL, CV_DEFAULT, NULL);
2411
2412 fp->rf_dinfo.rd_dtype = OPEN_DELEGATE_NONE;
2413
2414 rw_init(&fp->rf_file_rwlock, NULL, RW_DEFAULT, NULL);
2415
2416 mutex_enter(&vp->v_vsd_lock);
2417 VERIFY(vsd_set(vp, nfs4_srv_vkey, (void *)fp) == 0);
2418 mutex_exit(&vp->v_vsd_lock);
2419
2420 return (TRUE);
2421 }
2422
2423 rfs4_file_t *
rfs4_findfile(vnode_t * vp,nfs_fh4 * fh,bool_t * create)2424 rfs4_findfile(vnode_t *vp, nfs_fh4 *fh, bool_t *create)
2425 {
2426 rfs4_file_t *fp;
2427 rfs4_fcreate_arg arg;
2428
2429 arg.vp = vp;
2430 arg.fh = fh;
2431
2432 if (*create == TRUE)
2433 fp = (rfs4_file_t *)rfs4_dbsearch(rfs4_file_idx, vp, create,
2434 &arg, RFS4_DBS_VALID);
2435 else {
2436 mutex_enter(&vp->v_vsd_lock);
2437 fp = (rfs4_file_t *)vsd_get(vp, nfs4_srv_vkey);
2438 if (fp) {
2439 rfs4_dbe_lock(fp->rf_dbe);
2440 if (rfs4_dbe_is_invalid(fp->rf_dbe) ||
2441 (rfs4_dbe_refcnt(fp->rf_dbe) == 0)) {
2442 rfs4_dbe_unlock(fp->rf_dbe);
2443 fp = NULL;
2444 } else {
2445 rfs4_dbe_hold(fp->rf_dbe);
2446 rfs4_dbe_unlock(fp->rf_dbe);
2447 }
2448 }
2449 mutex_exit(&vp->v_vsd_lock);
2450 }
2451 return (fp);
2452 }
2453
2454 /*
2455 * Find a file in the db and once it is located, take the rw lock.
2456 * Need to check the vnode pointer and if it does not exist (it was
2457 * removed between the db location and check) redo the find. This
2458 * assumes that a file struct that has a NULL vnode pointer is marked
2459 * at 'invalid' and will not be found in the db the second time
2460 * around.
2461 */
2462 rfs4_file_t *
rfs4_findfile_withlock(vnode_t * vp,nfs_fh4 * fh,bool_t * create)2463 rfs4_findfile_withlock(vnode_t *vp, nfs_fh4 *fh, bool_t *create)
2464 {
2465 rfs4_file_t *fp;
2466 rfs4_fcreate_arg arg;
2467 bool_t screate = *create;
2468
2469 if (screate == FALSE) {
2470 mutex_enter(&vp->v_vsd_lock);
2471 fp = (rfs4_file_t *)vsd_get(vp, nfs4_srv_vkey);
2472 if (fp) {
2473 rfs4_dbe_lock(fp->rf_dbe);
2474 if (rfs4_dbe_is_invalid(fp->rf_dbe) ||
2475 (rfs4_dbe_refcnt(fp->rf_dbe) == 0)) {
2476 rfs4_dbe_unlock(fp->rf_dbe);
2477 mutex_exit(&vp->v_vsd_lock);
2478 fp = NULL;
2479 } else {
2480 rfs4_dbe_hold(fp->rf_dbe);
2481 rfs4_dbe_unlock(fp->rf_dbe);
2482 mutex_exit(&vp->v_vsd_lock);
2483 rw_enter(&fp->rf_file_rwlock, RW_WRITER);
2484 if (fp->rf_vp == NULL) {
2485 rw_exit(&fp->rf_file_rwlock);
2486 rfs4_file_rele(fp);
2487 fp = NULL;
2488 }
2489 }
2490 } else {
2491 mutex_exit(&vp->v_vsd_lock);
2492 }
2493 } else {
2494 retry:
2495 arg.vp = vp;
2496 arg.fh = fh;
2497
2498 fp = (rfs4_file_t *)rfs4_dbsearch(rfs4_file_idx, vp, create,
2499 &arg, RFS4_DBS_VALID);
2500 if (fp != NULL) {
2501 rw_enter(&fp->rf_file_rwlock, RW_WRITER);
2502 if (fp->rf_vp == NULL) {
2503 rw_exit(&fp->rf_file_rwlock);
2504 rfs4_file_rele(fp);
2505 *create = screate;
2506 goto retry;
2507 }
2508 }
2509 }
2510
2511 return (fp);
2512 }
2513
2514 static uint32_t
lo_state_hash(void * key)2515 lo_state_hash(void *key)
2516 {
2517 stateid_t *id = key;
2518
2519 return (id->bits.ident+id->bits.pid);
2520 }
2521
2522 static bool_t
lo_state_compare(rfs4_entry_t u_entry,void * key)2523 lo_state_compare(rfs4_entry_t u_entry, void *key)
2524 {
2525 rfs4_lo_state_t *lsp = (rfs4_lo_state_t *)u_entry;
2526 stateid_t *id = key;
2527 bool_t rc;
2528
2529 rc = (lsp->rls_lockid.bits.boottime == id->bits.boottime &&
2530 lsp->rls_lockid.bits.type == id->bits.type &&
2531 lsp->rls_lockid.bits.ident == id->bits.ident &&
2532 lsp->rls_lockid.bits.pid == id->bits.pid);
2533
2534 return (rc);
2535 }
2536
2537 static void *
lo_state_mkkey(rfs4_entry_t u_entry)2538 lo_state_mkkey(rfs4_entry_t u_entry)
2539 {
2540 rfs4_lo_state_t *lsp = (rfs4_lo_state_t *)u_entry;
2541
2542 return (&lsp->rls_lockid);
2543 }
2544
2545 static bool_t
rfs4_lo_state_expiry(rfs4_entry_t u_entry)2546 rfs4_lo_state_expiry(rfs4_entry_t u_entry)
2547 {
2548 rfs4_lo_state_t *lsp = (rfs4_lo_state_t *)u_entry;
2549
2550 if (rfs4_dbe_is_invalid(lsp->rls_dbe))
2551 return (TRUE);
2552 if (lsp->rls_state->rs_closed)
2553 return (TRUE);
2554 return ((gethrestime_sec() -
2555 lsp->rls_state->rs_owner->ro_client->rc_last_access
2556 > rfs4_lease_time));
2557 }
2558
2559 static void
rfs4_lo_state_destroy(rfs4_entry_t u_entry)2560 rfs4_lo_state_destroy(rfs4_entry_t u_entry)
2561 {
2562 rfs4_lo_state_t *lsp = (rfs4_lo_state_t *)u_entry;
2563
2564 rfs4_dbe_lock(lsp->rls_state->rs_dbe);
2565 list_remove(&lsp->rls_state->rs_lostatelist, lsp);
2566 rfs4_dbe_unlock(lsp->rls_state->rs_dbe);
2567
2568 rfs4_sw_destroy(&lsp->rls_sw);
2569
2570 /* Make sure to release the file locks */
2571 if (lsp->rls_locks_cleaned == FALSE) {
2572 lsp->rls_locks_cleaned = TRUE;
2573 if (lsp->rls_locker->rl_client->rc_sysidt != LM_NOSYSID) {
2574 /* Is the PxFS kernel module loaded? */
2575 if (lm_remove_file_locks != NULL) {
2576 int new_sysid;
2577
2578 /* Encode the cluster nodeid in new sysid */
2579 new_sysid =
2580 lsp->rls_locker->rl_client->rc_sysidt;
2581 lm_set_nlmid_flk(&new_sysid);
2582
2583 /*
2584 * This PxFS routine removes file locks for a
2585 * client over all nodes of a cluster.
2586 */
2587 DTRACE_PROBE1(nfss_i_clust_rm_lck,
2588 int, new_sysid);
2589 (*lm_remove_file_locks)(new_sysid);
2590 } else {
2591 (void) cleanlocks(
2592 lsp->rls_state->rs_finfo->rf_vp,
2593 lsp->rls_locker->rl_pid,
2594 lsp->rls_locker->rl_client->rc_sysidt);
2595 }
2596 }
2597 }
2598
2599 /* Free the last reply for this state */
2600 rfs4_free_reply(&lsp->rls_reply);
2601
2602 rfs4_lockowner_rele(lsp->rls_locker);
2603 lsp->rls_locker = NULL;
2604
2605 rfs4_state_rele_nounlock(lsp->rls_state);
2606 lsp->rls_state = NULL;
2607 }
2608
2609 static bool_t
rfs4_lo_state_create(rfs4_entry_t u_entry,void * arg)2610 rfs4_lo_state_create(rfs4_entry_t u_entry, void *arg)
2611 {
2612 rfs4_lo_state_t *lsp = (rfs4_lo_state_t *)u_entry;
2613 rfs4_lo_state_t *argp = (rfs4_lo_state_t *)arg;
2614 rfs4_lockowner_t *lo = argp->rls_locker;
2615 rfs4_state_t *sp = argp->rls_state;
2616
2617 lsp->rls_state = sp;
2618
2619 lsp->rls_lockid = sp->rs_stateid;
2620 lsp->rls_lockid.bits.type = LOCKID;
2621 lsp->rls_lockid.bits.chgseq = 0;
2622 lsp->rls_lockid.bits.pid = lo->rl_pid;
2623
2624 lsp->rls_locks_cleaned = FALSE;
2625 lsp->rls_lock_completed = FALSE;
2626
2627 rfs4_sw_init(&lsp->rls_sw);
2628
2629 /* Attached the supplied lock owner */
2630 rfs4_dbe_hold(lo->rl_dbe);
2631 lsp->rls_locker = lo;
2632
2633 rfs4_dbe_lock(sp->rs_dbe);
2634 list_insert_tail(&sp->rs_lostatelist, lsp);
2635 rfs4_dbe_hold(sp->rs_dbe);
2636 rfs4_dbe_unlock(sp->rs_dbe);
2637
2638 return (TRUE);
2639 }
2640
2641 void
rfs4_lo_state_rele(rfs4_lo_state_t * lsp,bool_t unlock_fp)2642 rfs4_lo_state_rele(rfs4_lo_state_t *lsp, bool_t unlock_fp)
2643 {
2644 if (unlock_fp == TRUE)
2645 rw_exit(&lsp->rls_state->rs_finfo->rf_file_rwlock);
2646 rfs4_dbe_rele(lsp->rls_dbe);
2647 }
2648
2649 static rfs4_lo_state_t *
rfs4_findlo_state(stateid_t * id,bool_t lock_fp)2650 rfs4_findlo_state(stateid_t *id, bool_t lock_fp)
2651 {
2652 rfs4_lo_state_t *lsp;
2653 bool_t create = FALSE;
2654
2655 lsp = (rfs4_lo_state_t *)rfs4_dbsearch(rfs4_lo_state_idx, id,
2656 &create, NULL, RFS4_DBS_VALID);
2657 if (lock_fp == TRUE && lsp != NULL)
2658 rw_enter(&lsp->rls_state->rs_finfo->rf_file_rwlock, RW_READER);
2659
2660 return (lsp);
2661 }
2662
2663
2664 static uint32_t
lo_state_lo_hash(void * key)2665 lo_state_lo_hash(void *key)
2666 {
2667 rfs4_lo_state_t *lsp = key;
2668
2669 return (ADDRHASH(lsp->rls_locker) ^ ADDRHASH(lsp->rls_state));
2670 }
2671
2672 static bool_t
lo_state_lo_compare(rfs4_entry_t u_entry,void * key)2673 lo_state_lo_compare(rfs4_entry_t u_entry, void *key)
2674 {
2675 rfs4_lo_state_t *lsp = (rfs4_lo_state_t *)u_entry;
2676 rfs4_lo_state_t *keyp = key;
2677
2678 return (keyp->rls_locker == lsp->rls_locker &&
2679 keyp->rls_state == lsp->rls_state);
2680 }
2681
2682 static void *
lo_state_lo_mkkey(rfs4_entry_t u_entry)2683 lo_state_lo_mkkey(rfs4_entry_t u_entry)
2684 {
2685 return (u_entry);
2686 }
2687
2688 rfs4_lo_state_t *
rfs4_findlo_state_by_owner(rfs4_lockowner_t * lo,rfs4_state_t * sp,bool_t * create)2689 rfs4_findlo_state_by_owner(rfs4_lockowner_t *lo, rfs4_state_t *sp,
2690 bool_t *create)
2691 {
2692 rfs4_lo_state_t *lsp;
2693 rfs4_lo_state_t arg;
2694
2695 arg.rls_locker = lo;
2696 arg.rls_state = sp;
2697
2698 lsp = (rfs4_lo_state_t *)rfs4_dbsearch(rfs4_lo_state_owner_idx, &arg,
2699 create, &arg, RFS4_DBS_VALID);
2700
2701 return (lsp);
2702 }
2703
2704 static stateid_t
get_stateid(id_t eid)2705 get_stateid(id_t eid)
2706 {
2707 stateid_t id;
2708
2709 id.bits.boottime = rfs4_start_time;
2710 id.bits.ident = eid;
2711 id.bits.chgseq = 0;
2712 id.bits.type = 0;
2713 id.bits.pid = 0;
2714
2715 /*
2716 * If we are booted as a cluster node, embed our nodeid.
2717 * We've already done sanity checks in rfs4_client_create() so no
2718 * need to repeat them here.
2719 */
2720 id.bits.clnodeid = (cluster_bootflags & CLUSTER_BOOTED) ?
2721 clconf_get_nodeid() : 0;
2722
2723 return (id);
2724 }
2725
2726 /*
2727 * For use only when booted as a cluster node.
2728 * Returns TRUE if the embedded nodeid indicates that this stateid was
2729 * generated on another node.
2730 */
2731 static int
foreign_stateid(stateid_t * id)2732 foreign_stateid(stateid_t *id)
2733 {
2734 ASSERT(cluster_bootflags & CLUSTER_BOOTED);
2735 return (id->bits.clnodeid != (uint32_t)clconf_get_nodeid());
2736 }
2737
2738 /*
2739 * For use only when booted as a cluster node.
2740 * Returns TRUE if the embedded nodeid indicates that this clientid was
2741 * generated on another node.
2742 */
2743 static int
foreign_clientid(cid * cidp)2744 foreign_clientid(cid *cidp)
2745 {
2746 ASSERT(cluster_bootflags & CLUSTER_BOOTED);
2747 return (cidp->impl_id.c_id >> CLUSTER_NODEID_SHIFT !=
2748 (uint32_t)clconf_get_nodeid());
2749 }
2750
2751 /*
2752 * For use only when booted as a cluster node.
2753 * Embed our cluster nodeid into the clientid.
2754 */
2755 static void
embed_nodeid(cid * cidp)2756 embed_nodeid(cid *cidp)
2757 {
2758 int clnodeid;
2759 /*
2760 * Currently, our state tables are small enough that their
2761 * ids will leave enough bits free for the nodeid. If the
2762 * tables become larger, we mustn't overwrite the id.
2763 * Equally, we only have room for so many bits of nodeid, so
2764 * must check that too.
2765 */
2766 ASSERT(cluster_bootflags & CLUSTER_BOOTED);
2767 ASSERT(cidp->impl_id.c_id >> CLUSTER_NODEID_SHIFT == 0);
2768 clnodeid = clconf_get_nodeid();
2769 ASSERT(clnodeid <= CLUSTER_MAX_NODEID);
2770 ASSERT(clnodeid != NODEID_UNKNOWN);
2771 cidp->impl_id.c_id |= (clnodeid << CLUSTER_NODEID_SHIFT);
2772 }
2773
2774 static uint32_t
state_hash(void * key)2775 state_hash(void *key)
2776 {
2777 stateid_t *ip = (stateid_t *)key;
2778
2779 return (ip->bits.ident);
2780 }
2781
2782 static bool_t
state_compare(rfs4_entry_t u_entry,void * key)2783 state_compare(rfs4_entry_t u_entry, void *key)
2784 {
2785 rfs4_state_t *sp = (rfs4_state_t *)u_entry;
2786 stateid_t *id = (stateid_t *)key;
2787 bool_t rc;
2788
2789 rc = (sp->rs_stateid.bits.boottime == id->bits.boottime &&
2790 sp->rs_stateid.bits.ident == id->bits.ident);
2791
2792 return (rc);
2793 }
2794
2795 static void *
state_mkkey(rfs4_entry_t u_entry)2796 state_mkkey(rfs4_entry_t u_entry)
2797 {
2798 rfs4_state_t *sp = (rfs4_state_t *)u_entry;
2799
2800 return (&sp->rs_stateid);
2801 }
2802
2803 static void
rfs4_state_destroy(rfs4_entry_t u_entry)2804 rfs4_state_destroy(rfs4_entry_t u_entry)
2805 {
2806 rfs4_state_t *sp = (rfs4_state_t *)u_entry;
2807
2808 /* remove from openowner list */
2809 rfs4_dbe_lock(sp->rs_owner->ro_dbe);
2810 list_remove(&sp->rs_owner->ro_statelist, sp);
2811 rfs4_dbe_unlock(sp->rs_owner->ro_dbe);
2812
2813 list_destroy(&sp->rs_lostatelist);
2814
2815 /* release any share locks for this stateid if it's still open */
2816 if (!sp->rs_closed) {
2817 rfs4_dbe_lock(sp->rs_dbe);
2818 (void) rfs4_unshare(sp);
2819 rfs4_dbe_unlock(sp->rs_dbe);
2820 }
2821
2822 /* Were done with the file */
2823 rfs4_file_rele(sp->rs_finfo);
2824 sp->rs_finfo = NULL;
2825
2826 /* And now with the openowner */
2827 rfs4_openowner_rele(sp->rs_owner);
2828 sp->rs_owner = NULL;
2829 }
2830
2831 static void
rfs4_state_rele_nounlock(rfs4_state_t * sp)2832 rfs4_state_rele_nounlock(rfs4_state_t *sp)
2833 {
2834 rfs4_dbe_rele(sp->rs_dbe);
2835 }
2836
2837 void
rfs4_state_rele(rfs4_state_t * sp)2838 rfs4_state_rele(rfs4_state_t *sp)
2839 {
2840 rw_exit(&sp->rs_finfo->rf_file_rwlock);
2841 rfs4_dbe_rele(sp->rs_dbe);
2842 }
2843
2844 static uint32_t
deleg_hash(void * key)2845 deleg_hash(void *key)
2846 {
2847 rfs4_deleg_state_t *dsp = (rfs4_deleg_state_t *)key;
2848
2849 return (ADDRHASH(dsp->rds_client) ^ ADDRHASH(dsp->rds_finfo));
2850 }
2851
2852 static bool_t
deleg_compare(rfs4_entry_t u_entry,void * key)2853 deleg_compare(rfs4_entry_t u_entry, void *key)
2854 {
2855 rfs4_deleg_state_t *dsp = (rfs4_deleg_state_t *)u_entry;
2856 rfs4_deleg_state_t *kdsp = (rfs4_deleg_state_t *)key;
2857
2858 return (dsp->rds_client == kdsp->rds_client &&
2859 dsp->rds_finfo == kdsp->rds_finfo);
2860 }
2861
2862 static void *
deleg_mkkey(rfs4_entry_t u_entry)2863 deleg_mkkey(rfs4_entry_t u_entry)
2864 {
2865 return (u_entry);
2866 }
2867
2868 static uint32_t
deleg_state_hash(void * key)2869 deleg_state_hash(void *key)
2870 {
2871 stateid_t *ip = (stateid_t *)key;
2872
2873 return (ip->bits.ident);
2874 }
2875
2876 static bool_t
deleg_state_compare(rfs4_entry_t u_entry,void * key)2877 deleg_state_compare(rfs4_entry_t u_entry, void *key)
2878 {
2879 rfs4_deleg_state_t *dsp = (rfs4_deleg_state_t *)u_entry;
2880 stateid_t *id = (stateid_t *)key;
2881 bool_t rc;
2882
2883 if (id->bits.type != DELEGID)
2884 return (FALSE);
2885
2886 rc = (dsp->rds_delegid.bits.boottime == id->bits.boottime &&
2887 dsp->rds_delegid.bits.ident == id->bits.ident);
2888
2889 return (rc);
2890 }
2891
2892 static void *
deleg_state_mkkey(rfs4_entry_t u_entry)2893 deleg_state_mkkey(rfs4_entry_t u_entry)
2894 {
2895 rfs4_deleg_state_t *dsp = (rfs4_deleg_state_t *)u_entry;
2896
2897 return (&dsp->rds_delegid);
2898 }
2899
2900 static bool_t
rfs4_deleg_state_expiry(rfs4_entry_t u_entry)2901 rfs4_deleg_state_expiry(rfs4_entry_t u_entry)
2902 {
2903 rfs4_deleg_state_t *dsp = (rfs4_deleg_state_t *)u_entry;
2904
2905 if (rfs4_dbe_is_invalid(dsp->rds_dbe))
2906 return (TRUE);
2907
2908 if (dsp->rds_dtype == OPEN_DELEGATE_NONE)
2909 return (TRUE);
2910
2911 if ((gethrestime_sec() - dsp->rds_client->rc_last_access
2912 > rfs4_lease_time)) {
2913 rfs4_dbe_invalidate(dsp->rds_dbe);
2914 return (TRUE);
2915 }
2916
2917 return (FALSE);
2918 }
2919
2920 static bool_t
rfs4_deleg_state_create(rfs4_entry_t u_entry,void * argp)2921 rfs4_deleg_state_create(rfs4_entry_t u_entry, void *argp)
2922 {
2923 rfs4_deleg_state_t *dsp = (rfs4_deleg_state_t *)u_entry;
2924 rfs4_file_t *fp = ((rfs4_deleg_state_t *)argp)->rds_finfo;
2925 rfs4_client_t *cp = ((rfs4_deleg_state_t *)argp)->rds_client;
2926
2927 rfs4_dbe_hold(fp->rf_dbe);
2928 rfs4_dbe_hold(cp->rc_dbe);
2929
2930 dsp->rds_delegid = get_stateid(rfs4_dbe_getid(dsp->rds_dbe));
2931 dsp->rds_delegid.bits.type = DELEGID;
2932 dsp->rds_finfo = fp;
2933 dsp->rds_client = cp;
2934 dsp->rds_dtype = OPEN_DELEGATE_NONE;
2935
2936 dsp->rds_time_granted = gethrestime_sec(); /* observability */
2937 dsp->rds_time_revoked = 0;
2938
2939 list_link_init(&dsp->rds_node);
2940
2941 return (TRUE);
2942 }
2943
2944 static void
rfs4_deleg_state_destroy(rfs4_entry_t u_entry)2945 rfs4_deleg_state_destroy(rfs4_entry_t u_entry)
2946 {
2947 rfs4_deleg_state_t *dsp = (rfs4_deleg_state_t *)u_entry;
2948
2949 /* return delegation if necessary */
2950 rfs4_return_deleg(dsp, FALSE);
2951
2952 /* Were done with the file */
2953 rfs4_file_rele(dsp->rds_finfo);
2954 dsp->rds_finfo = NULL;
2955
2956 /* And now with the openowner */
2957 rfs4_client_rele(dsp->rds_client);
2958 dsp->rds_client = NULL;
2959 }
2960
2961 rfs4_deleg_state_t *
rfs4_finddeleg(rfs4_state_t * sp,bool_t * create)2962 rfs4_finddeleg(rfs4_state_t *sp, bool_t *create)
2963 {
2964 rfs4_deleg_state_t ds, *dsp;
2965
2966 ds.rds_client = sp->rs_owner->ro_client;
2967 ds.rds_finfo = sp->rs_finfo;
2968
2969 dsp = (rfs4_deleg_state_t *)rfs4_dbsearch(rfs4_deleg_idx, &ds,
2970 create, &ds, RFS4_DBS_VALID);
2971
2972 return (dsp);
2973 }
2974
2975 rfs4_deleg_state_t *
rfs4_finddelegstate(stateid_t * id)2976 rfs4_finddelegstate(stateid_t *id)
2977 {
2978 rfs4_deleg_state_t *dsp;
2979 bool_t create = FALSE;
2980
2981 dsp = (rfs4_deleg_state_t *)rfs4_dbsearch(rfs4_deleg_state_idx, id,
2982 &create, NULL, RFS4_DBS_VALID);
2983
2984 return (dsp);
2985 }
2986
2987 void
rfs4_deleg_state_rele(rfs4_deleg_state_t * dsp)2988 rfs4_deleg_state_rele(rfs4_deleg_state_t *dsp)
2989 {
2990 rfs4_dbe_rele(dsp->rds_dbe);
2991 }
2992
2993 void
rfs4_update_lock_sequence(rfs4_lo_state_t * lsp)2994 rfs4_update_lock_sequence(rfs4_lo_state_t *lsp)
2995 {
2996
2997 rfs4_dbe_lock(lsp->rls_dbe);
2998
2999 /*
3000 * If we are skipping sequence id checking, this means that
3001 * this is the first lock request and therefore the sequence
3002 * id does not need to be updated. This only happens on the
3003 * first lock request for a lockowner
3004 */
3005 if (!lsp->rls_skip_seqid_check)
3006 lsp->rls_seqid++;
3007
3008 rfs4_dbe_unlock(lsp->rls_dbe);
3009 }
3010
3011 void
rfs4_update_lock_resp(rfs4_lo_state_t * lsp,nfs_resop4 * resp)3012 rfs4_update_lock_resp(rfs4_lo_state_t *lsp, nfs_resop4 *resp)
3013 {
3014
3015 rfs4_dbe_lock(lsp->rls_dbe);
3016
3017 rfs4_free_reply(&lsp->rls_reply);
3018
3019 rfs4_copy_reply(&lsp->rls_reply, resp);
3020
3021 rfs4_dbe_unlock(lsp->rls_dbe);
3022 }
3023
3024 void
rfs4_free_opens(rfs4_openowner_t * oo,bool_t invalidate,bool_t close_of_client)3025 rfs4_free_opens(rfs4_openowner_t *oo, bool_t invalidate,
3026 bool_t close_of_client)
3027 {
3028 rfs4_state_t *sp;
3029
3030 rfs4_dbe_lock(oo->ro_dbe);
3031
3032 for (sp = list_head(&oo->ro_statelist); sp != NULL;
3033 sp = list_next(&oo->ro_statelist, sp)) {
3034 rfs4_state_close(sp, FALSE, close_of_client, CRED());
3035 if (invalidate == TRUE)
3036 rfs4_dbe_invalidate(sp->rs_dbe);
3037 }
3038
3039 rfs4_dbe_invalidate(oo->ro_dbe);
3040 rfs4_dbe_unlock(oo->ro_dbe);
3041 }
3042
3043 static uint32_t
state_owner_file_hash(void * key)3044 state_owner_file_hash(void *key)
3045 {
3046 rfs4_state_t *sp = key;
3047
3048 return (ADDRHASH(sp->rs_owner) ^ ADDRHASH(sp->rs_finfo));
3049 }
3050
3051 static bool_t
state_owner_file_compare(rfs4_entry_t u_entry,void * key)3052 state_owner_file_compare(rfs4_entry_t u_entry, void *key)
3053 {
3054 rfs4_state_t *sp = (rfs4_state_t *)u_entry;
3055 rfs4_state_t *arg = key;
3056
3057 if (sp->rs_closed == TRUE)
3058 return (FALSE);
3059
3060 return (arg->rs_owner == sp->rs_owner && arg->rs_finfo == sp->rs_finfo);
3061 }
3062
3063 static void *
state_owner_file_mkkey(rfs4_entry_t u_entry)3064 state_owner_file_mkkey(rfs4_entry_t u_entry)
3065 {
3066 return (u_entry);
3067 }
3068
3069 static uint32_t
state_file_hash(void * key)3070 state_file_hash(void *key)
3071 {
3072 return (ADDRHASH(key));
3073 }
3074
3075 static bool_t
state_file_compare(rfs4_entry_t u_entry,void * key)3076 state_file_compare(rfs4_entry_t u_entry, void *key)
3077 {
3078 rfs4_state_t *sp = (rfs4_state_t *)u_entry;
3079 rfs4_file_t *fp = key;
3080
3081 if (sp->rs_closed == TRUE)
3082 return (FALSE);
3083
3084 return (fp == sp->rs_finfo);
3085 }
3086
3087 static void *
state_file_mkkey(rfs4_entry_t u_entry)3088 state_file_mkkey(rfs4_entry_t u_entry)
3089 {
3090 rfs4_state_t *sp = (rfs4_state_t *)u_entry;
3091
3092 return (sp->rs_finfo);
3093 }
3094
3095 rfs4_state_t *
rfs4_findstate_by_owner_file(rfs4_openowner_t * oo,rfs4_file_t * fp,bool_t * create)3096 rfs4_findstate_by_owner_file(rfs4_openowner_t *oo, rfs4_file_t *fp,
3097 bool_t *create)
3098 {
3099 rfs4_state_t *sp;
3100 rfs4_state_t key;
3101
3102 key.rs_owner = oo;
3103 key.rs_finfo = fp;
3104
3105 sp = (rfs4_state_t *)rfs4_dbsearch(rfs4_state_owner_file_idx, &key,
3106 create, &key, RFS4_DBS_VALID);
3107
3108 return (sp);
3109 }
3110
3111 /* This returns ANY state struct that refers to this file */
3112 static rfs4_state_t *
rfs4_findstate_by_file(rfs4_file_t * fp)3113 rfs4_findstate_by_file(rfs4_file_t *fp)
3114 {
3115 bool_t create = FALSE;
3116
3117 return ((rfs4_state_t *)rfs4_dbsearch(rfs4_state_file_idx, fp,
3118 &create, fp, RFS4_DBS_VALID));
3119 }
3120
3121 static bool_t
rfs4_state_expiry(rfs4_entry_t u_entry)3122 rfs4_state_expiry(rfs4_entry_t u_entry)
3123 {
3124 rfs4_state_t *sp = (rfs4_state_t *)u_entry;
3125
3126 if (rfs4_dbe_is_invalid(sp->rs_dbe))
3127 return (TRUE);
3128
3129 if (sp->rs_closed == TRUE &&
3130 ((gethrestime_sec() - rfs4_dbe_get_timerele(sp->rs_dbe))
3131 > rfs4_lease_time))
3132 return (TRUE);
3133
3134 return ((gethrestime_sec() - sp->rs_owner->ro_client->rc_last_access
3135 > rfs4_lease_time));
3136 }
3137
3138 static bool_t
rfs4_state_create(rfs4_entry_t u_entry,void * argp)3139 rfs4_state_create(rfs4_entry_t u_entry, void *argp)
3140 {
3141 rfs4_state_t *sp = (rfs4_state_t *)u_entry;
3142 rfs4_file_t *fp = ((rfs4_state_t *)argp)->rs_finfo;
3143 rfs4_openowner_t *oo = ((rfs4_state_t *)argp)->rs_owner;
3144
3145 rfs4_dbe_hold(fp->rf_dbe);
3146 rfs4_dbe_hold(oo->ro_dbe);
3147 sp->rs_stateid = get_stateid(rfs4_dbe_getid(sp->rs_dbe));
3148 sp->rs_stateid.bits.type = OPENID;
3149 sp->rs_owner = oo;
3150 sp->rs_finfo = fp;
3151
3152 list_create(&sp->rs_lostatelist, sizeof (rfs4_lo_state_t),
3153 offsetof(rfs4_lo_state_t, rls_node));
3154
3155 /* Insert state on per open owner's list */
3156 rfs4_dbe_lock(oo->ro_dbe);
3157 list_insert_tail(&oo->ro_statelist, sp);
3158 rfs4_dbe_unlock(oo->ro_dbe);
3159
3160 return (TRUE);
3161 }
3162
3163 static rfs4_state_t *
rfs4_findstate(stateid_t * id,rfs4_dbsearch_type_t find_invalid,bool_t lock_fp)3164 rfs4_findstate(stateid_t *id, rfs4_dbsearch_type_t find_invalid, bool_t lock_fp)
3165 {
3166 rfs4_state_t *sp;
3167 bool_t create = FALSE;
3168
3169 sp = (rfs4_state_t *)rfs4_dbsearch(rfs4_state_idx, id,
3170 &create, NULL, find_invalid);
3171 if (lock_fp == TRUE && sp != NULL)
3172 rw_enter(&sp->rs_finfo->rf_file_rwlock, RW_READER);
3173
3174 return (sp);
3175 }
3176
3177 void
rfs4_state_close(rfs4_state_t * sp,bool_t lock_held,bool_t close_of_client,cred_t * cr)3178 rfs4_state_close(rfs4_state_t *sp, bool_t lock_held, bool_t close_of_client,
3179 cred_t *cr)
3180 {
3181 /* Remove the associated lo_state owners */
3182 if (!lock_held)
3183 rfs4_dbe_lock(sp->rs_dbe);
3184
3185 /*
3186 * If refcnt == 0, the dbe is about to be destroyed.
3187 * lock state will be released by the reaper thread.
3188 */
3189
3190 if (rfs4_dbe_refcnt(sp->rs_dbe) > 0) {
3191 if (sp->rs_closed == FALSE) {
3192 rfs4_release_share_lock_state(sp, cr, close_of_client);
3193 sp->rs_closed = TRUE;
3194 }
3195 }
3196
3197 if (!lock_held)
3198 rfs4_dbe_unlock(sp->rs_dbe);
3199 }
3200
3201 /*
3202 * Remove all state associated with the given client.
3203 */
3204 void
rfs4_client_state_remove(rfs4_client_t * cp)3205 rfs4_client_state_remove(rfs4_client_t *cp)
3206 {
3207 rfs4_openowner_t *oo;
3208
3209 rfs4_dbe_lock(cp->rc_dbe);
3210
3211 for (oo = list_head(&cp->rc_openownerlist); oo != NULL;
3212 oo = list_next(&cp->rc_openownerlist, oo)) {
3213 rfs4_free_opens(oo, TRUE, TRUE);
3214 }
3215
3216 rfs4_dbe_unlock(cp->rc_dbe);
3217 }
3218
3219 void
rfs4_client_close(rfs4_client_t * cp)3220 rfs4_client_close(rfs4_client_t *cp)
3221 {
3222 /* Mark client as going away. */
3223 rfs4_dbe_lock(cp->rc_dbe);
3224 rfs4_dbe_invalidate(cp->rc_dbe);
3225 rfs4_dbe_unlock(cp->rc_dbe);
3226
3227 rfs4_client_state_remove(cp);
3228
3229 /* Release the client */
3230 rfs4_client_rele(cp);
3231 }
3232
3233 nfsstat4
rfs4_check_clientid(clientid4 * cp,int setclid_confirm)3234 rfs4_check_clientid(clientid4 *cp, int setclid_confirm)
3235 {
3236 cid *cidp = (cid *) cp;
3237
3238 /*
3239 * If we are booted as a cluster node, check the embedded nodeid.
3240 * If it indicates that this clientid was generated on another node,
3241 * inform the client accordingly.
3242 */
3243 if (cluster_bootflags & CLUSTER_BOOTED && foreign_clientid(cidp))
3244 return (NFS4ERR_STALE_CLIENTID);
3245
3246 /*
3247 * If the server start time matches the time provided
3248 * by the client (via the clientid) and this is NOT a
3249 * setclientid_confirm then return EXPIRED.
3250 */
3251 if (!setclid_confirm && cidp->impl_id.start_time == rfs4_start_time)
3252 return (NFS4ERR_EXPIRED);
3253
3254 return (NFS4ERR_STALE_CLIENTID);
3255 }
3256
3257 /*
3258 * This is used when a stateid has not been found amongst the
3259 * current server's state. Check the stateid to see if it
3260 * was from this server instantiation or not.
3261 */
3262 static nfsstat4
what_stateid_error(stateid_t * id,stateid_type_t type)3263 what_stateid_error(stateid_t *id, stateid_type_t type)
3264 {
3265 /* If we are booted as a cluster node, was stateid locally generated? */
3266 if ((cluster_bootflags & CLUSTER_BOOTED) && foreign_stateid(id))
3267 return (NFS4ERR_STALE_STATEID);
3268
3269 /* If types don't match then no use checking further */
3270 if (type != id->bits.type)
3271 return (NFS4ERR_BAD_STATEID);
3272
3273 /* From a different server instantiation, return STALE */
3274 if (id->bits.boottime != rfs4_start_time)
3275 return (NFS4ERR_STALE_STATEID);
3276
3277 /*
3278 * From this server but the state is most likely beyond lease
3279 * timeout: return NFS4ERR_EXPIRED. However, there is the
3280 * case of a delegation stateid. For delegations, there is a
3281 * case where the state can be removed without the client's
3282 * knowledge/consent: revocation. In the case of delegation
3283 * revocation, the delegation state will be removed and will
3284 * not be found. If the client does something like a
3285 * DELEGRETURN or even a READ/WRITE with a delegatoin stateid
3286 * that has been revoked, the server should return BAD_STATEID
3287 * instead of the more common EXPIRED error.
3288 */
3289 if (id->bits.boottime == rfs4_start_time) {
3290 if (type == DELEGID)
3291 return (NFS4ERR_BAD_STATEID);
3292 else
3293 return (NFS4ERR_EXPIRED);
3294 }
3295
3296 return (NFS4ERR_BAD_STATEID);
3297 }
3298
3299 /*
3300 * Used later on to find the various state structs. When called from
3301 * rfs4_check_stateid()->rfs4_get_all_state(), no file struct lock is
3302 * taken (it is not needed) and helps on the read/write path with
3303 * respect to performance.
3304 */
3305 static nfsstat4
rfs4_get_state_lockit(stateid4 * stateid,rfs4_state_t ** spp,rfs4_dbsearch_type_t find_invalid,bool_t lock_fp)3306 rfs4_get_state_lockit(stateid4 *stateid, rfs4_state_t **spp,
3307 rfs4_dbsearch_type_t find_invalid, bool_t lock_fp)
3308 {
3309 stateid_t *id = (stateid_t *)stateid;
3310 rfs4_state_t *sp;
3311
3312 *spp = NULL;
3313
3314 /* If we are booted as a cluster node, was stateid locally generated? */
3315 if ((cluster_bootflags & CLUSTER_BOOTED) && foreign_stateid(id))
3316 return (NFS4ERR_STALE_STATEID);
3317
3318 sp = rfs4_findstate(id, find_invalid, lock_fp);
3319 if (sp == NULL) {
3320 return (what_stateid_error(id, OPENID));
3321 }
3322
3323 if (rfs4_lease_expired(sp->rs_owner->ro_client)) {
3324 if (lock_fp == TRUE)
3325 rfs4_state_rele(sp);
3326 else
3327 rfs4_state_rele_nounlock(sp);
3328 return (NFS4ERR_EXPIRED);
3329 }
3330
3331 *spp = sp;
3332
3333 return (NFS4_OK);
3334 }
3335
3336 nfsstat4
rfs4_get_state(stateid4 * stateid,rfs4_state_t ** spp,rfs4_dbsearch_type_t find_invalid)3337 rfs4_get_state(stateid4 *stateid, rfs4_state_t **spp,
3338 rfs4_dbsearch_type_t find_invalid)
3339 {
3340 return (rfs4_get_state_lockit(stateid, spp, find_invalid, TRUE));
3341 }
3342
3343 int
rfs4_check_stateid_seqid(rfs4_state_t * sp,stateid4 * stateid)3344 rfs4_check_stateid_seqid(rfs4_state_t *sp, stateid4 *stateid)
3345 {
3346 stateid_t *id = (stateid_t *)stateid;
3347
3348 if (rfs4_lease_expired(sp->rs_owner->ro_client))
3349 return (NFS4_CHECK_STATEID_EXPIRED);
3350
3351 /* Stateid is some time in the future - that's bad */
3352 if (sp->rs_stateid.bits.chgseq < id->bits.chgseq)
3353 return (NFS4_CHECK_STATEID_BAD);
3354
3355 if (sp->rs_stateid.bits.chgseq == id->bits.chgseq + 1)
3356 return (NFS4_CHECK_STATEID_REPLAY);
3357
3358 /* Stateid is some time in the past - that's old */
3359 if (sp->rs_stateid.bits.chgseq > id->bits.chgseq)
3360 return (NFS4_CHECK_STATEID_OLD);
3361
3362 /* Caller needs to know about confirmation before closure */
3363 if (sp->rs_owner->ro_need_confirm)
3364 return (NFS4_CHECK_STATEID_UNCONFIRMED);
3365
3366 if (sp->rs_closed == TRUE)
3367 return (NFS4_CHECK_STATEID_CLOSED);
3368
3369 return (NFS4_CHECK_STATEID_OKAY);
3370 }
3371
3372 int
rfs4_check_lo_stateid_seqid(rfs4_lo_state_t * lsp,stateid4 * stateid)3373 rfs4_check_lo_stateid_seqid(rfs4_lo_state_t *lsp, stateid4 *stateid)
3374 {
3375 stateid_t *id = (stateid_t *)stateid;
3376
3377 if (rfs4_lease_expired(lsp->rls_state->rs_owner->ro_client))
3378 return (NFS4_CHECK_STATEID_EXPIRED);
3379
3380 /* Stateid is some time in the future - that's bad */
3381 if (lsp->rls_lockid.bits.chgseq < id->bits.chgseq)
3382 return (NFS4_CHECK_STATEID_BAD);
3383
3384 if (lsp->rls_lockid.bits.chgseq == id->bits.chgseq + 1)
3385 return (NFS4_CHECK_STATEID_REPLAY);
3386
3387 /* Stateid is some time in the past - that's old */
3388 if (lsp->rls_lockid.bits.chgseq > id->bits.chgseq)
3389 return (NFS4_CHECK_STATEID_OLD);
3390
3391 if (lsp->rls_state->rs_closed == TRUE)
3392 return (NFS4_CHECK_STATEID_CLOSED);
3393
3394 return (NFS4_CHECK_STATEID_OKAY);
3395 }
3396
3397 nfsstat4
rfs4_get_deleg_state(stateid4 * stateid,rfs4_deleg_state_t ** dspp)3398 rfs4_get_deleg_state(stateid4 *stateid, rfs4_deleg_state_t **dspp)
3399 {
3400 stateid_t *id = (stateid_t *)stateid;
3401 rfs4_deleg_state_t *dsp;
3402
3403 *dspp = NULL;
3404
3405 /* If we are booted as a cluster node, was stateid locally generated? */
3406 if ((cluster_bootflags & CLUSTER_BOOTED) && foreign_stateid(id))
3407 return (NFS4ERR_STALE_STATEID);
3408
3409 dsp = rfs4_finddelegstate(id);
3410 if (dsp == NULL) {
3411 return (what_stateid_error(id, DELEGID));
3412 }
3413
3414 if (rfs4_lease_expired(dsp->rds_client)) {
3415 rfs4_deleg_state_rele(dsp);
3416 return (NFS4ERR_EXPIRED);
3417 }
3418
3419 *dspp = dsp;
3420
3421 return (NFS4_OK);
3422 }
3423
3424 nfsstat4
rfs4_get_lo_state(stateid4 * stateid,rfs4_lo_state_t ** lspp,bool_t lock_fp)3425 rfs4_get_lo_state(stateid4 *stateid, rfs4_lo_state_t **lspp, bool_t lock_fp)
3426 {
3427 stateid_t *id = (stateid_t *)stateid;
3428 rfs4_lo_state_t *lsp;
3429
3430 *lspp = NULL;
3431
3432 /* If we are booted as a cluster node, was stateid locally generated? */
3433 if ((cluster_bootflags & CLUSTER_BOOTED) && foreign_stateid(id))
3434 return (NFS4ERR_STALE_STATEID);
3435
3436 lsp = rfs4_findlo_state(id, lock_fp);
3437 if (lsp == NULL) {
3438 return (what_stateid_error(id, LOCKID));
3439 }
3440
3441 if (rfs4_lease_expired(lsp->rls_state->rs_owner->ro_client)) {
3442 rfs4_lo_state_rele(lsp, lock_fp);
3443 return (NFS4ERR_EXPIRED);
3444 }
3445
3446 *lspp = lsp;
3447
3448 return (NFS4_OK);
3449 }
3450
3451 static nfsstat4
rfs4_get_all_state(stateid4 * sid,rfs4_state_t ** spp,rfs4_deleg_state_t ** dspp,rfs4_lo_state_t ** lspp)3452 rfs4_get_all_state(stateid4 *sid, rfs4_state_t **spp,
3453 rfs4_deleg_state_t **dspp, rfs4_lo_state_t **lspp)
3454 {
3455 rfs4_state_t *sp = NULL;
3456 rfs4_deleg_state_t *dsp = NULL;
3457 rfs4_lo_state_t *lsp = NULL;
3458 stateid_t *id;
3459 nfsstat4 status;
3460
3461 *spp = NULL; *dspp = NULL; *lspp = NULL;
3462
3463 id = (stateid_t *)sid;
3464 switch (id->bits.type) {
3465 case OPENID:
3466 status = rfs4_get_state_lockit(sid, &sp, FALSE, FALSE);
3467 break;
3468 case DELEGID:
3469 status = rfs4_get_deleg_state(sid, &dsp);
3470 break;
3471 case LOCKID:
3472 status = rfs4_get_lo_state(sid, &lsp, FALSE);
3473 if (status == NFS4_OK) {
3474 sp = lsp->rls_state;
3475 rfs4_dbe_hold(sp->rs_dbe);
3476 }
3477 break;
3478 default:
3479 status = NFS4ERR_BAD_STATEID;
3480 }
3481
3482 if (status == NFS4_OK) {
3483 *spp = sp;
3484 *dspp = dsp;
3485 *lspp = lsp;
3486 }
3487
3488 return (status);
3489 }
3490
3491 /*
3492 * Given the I/O mode (FREAD or FWRITE), this checks whether the
3493 * rfs4_state_t struct has access to do this operation and if so
3494 * return NFS4_OK; otherwise the proper NFSv4 error is returned.
3495 */
3496 nfsstat4
rfs4_state_has_access(rfs4_state_t * sp,int mode,vnode_t * vp)3497 rfs4_state_has_access(rfs4_state_t *sp, int mode, vnode_t *vp)
3498 {
3499 nfsstat4 stat = NFS4_OK;
3500 rfs4_file_t *fp;
3501 bool_t create = FALSE;
3502
3503 rfs4_dbe_lock(sp->rs_dbe);
3504 if (mode == FWRITE) {
3505 if (!(sp->rs_share_access & OPEN4_SHARE_ACCESS_WRITE)) {
3506 stat = NFS4ERR_OPENMODE;
3507 }
3508 } else if (mode == FREAD) {
3509 if (!(sp->rs_share_access & OPEN4_SHARE_ACCESS_READ)) {
3510 /*
3511 * If we have OPENed the file with DENYing access
3512 * to both READ and WRITE then no one else could
3513 * have OPENed the file, hence no conflicting READ
3514 * deny. This check is merely an optimization.
3515 */
3516 if (sp->rs_share_deny == OPEN4_SHARE_DENY_BOTH)
3517 goto out;
3518
3519 /* Check against file struct's DENY mode */
3520 fp = rfs4_findfile(vp, NULL, &create);
3521 if (fp != NULL) {
3522 int deny_read = 0;
3523 rfs4_dbe_lock(fp->rf_dbe);
3524 /*
3525 * Check if any other open owner has the file
3526 * OPENed with deny READ.
3527 */
3528 if (sp->rs_share_deny & OPEN4_SHARE_DENY_READ)
3529 deny_read = 1;
3530 ASSERT(fp->rf_deny_read >= deny_read);
3531 if (fp->rf_deny_read > deny_read)
3532 stat = NFS4ERR_OPENMODE;
3533 rfs4_dbe_unlock(fp->rf_dbe);
3534 rfs4_file_rele(fp);
3535 }
3536 }
3537 } else {
3538 /* Illegal I/O mode */
3539 stat = NFS4ERR_INVAL;
3540 }
3541 out:
3542 rfs4_dbe_unlock(sp->rs_dbe);
3543 return (stat);
3544 }
3545
3546 /*
3547 * Given the I/O mode (FREAD or FWRITE), the vnode, the stateid and whether
3548 * the file is being truncated, return NFS4_OK if allowed or appropriate
3549 * V4 error if not. Note NFS4ERR_DELAY will be returned and a recall on
3550 * the associated file will be done if the I/O is not consistent with any
3551 * delegation in effect on the file. Should be holding VOP_RWLOCK, either
3552 * as reader or writer as appropriate. rfs4_op_open will acquire the
3553 * VOP_RWLOCK as writer when setting up delegation. If the stateid is bad
3554 * this routine will return NFS4ERR_BAD_STATEID. In addition, through the
3555 * deleg parameter, we will return whether a write delegation is held by
3556 * the client associated with this stateid.
3557 * If the server instance associated with the relevant client is in its
3558 * grace period, return NFS4ERR_GRACE.
3559 */
3560
3561 nfsstat4
rfs4_check_stateid(int mode,vnode_t * vp,stateid4 * stateid,bool_t trunc,bool_t * deleg,bool_t do_access,caller_context_t * ct)3562 rfs4_check_stateid(int mode, vnode_t *vp,
3563 stateid4 *stateid, bool_t trunc, bool_t *deleg,
3564 bool_t do_access, caller_context_t *ct)
3565 {
3566 rfs4_file_t *fp;
3567 bool_t create = FALSE;
3568 rfs4_state_t *sp;
3569 rfs4_deleg_state_t *dsp;
3570 rfs4_lo_state_t *lsp;
3571 stateid_t *id = (stateid_t *)stateid;
3572 nfsstat4 stat = NFS4_OK;
3573
3574 if (ct != NULL) {
3575 ct->cc_sysid = 0;
3576 ct->cc_pid = 0;
3577 ct->cc_caller_id = nfs4_srv_caller_id;
3578 ct->cc_flags = CC_DONTBLOCK;
3579 }
3580
3581 if (ISSPECIAL(stateid)) {
3582 fp = rfs4_findfile(vp, NULL, &create);
3583 if (fp == NULL)
3584 return (NFS4_OK);
3585 if (fp->rf_dinfo.rd_dtype == OPEN_DELEGATE_NONE) {
3586 rfs4_file_rele(fp);
3587 return (NFS4_OK);
3588 }
3589 if (mode == FWRITE ||
3590 fp->rf_dinfo.rd_dtype == OPEN_DELEGATE_WRITE) {
3591 rfs4_recall_deleg(fp, trunc, NULL);
3592 rfs4_file_rele(fp);
3593 return (NFS4ERR_DELAY);
3594 }
3595 rfs4_file_rele(fp);
3596 return (NFS4_OK);
3597 } else {
3598 stat = rfs4_get_all_state(stateid, &sp, &dsp, &lsp);
3599 if (stat != NFS4_OK)
3600 return (stat);
3601 if (lsp != NULL) {
3602 /* Is associated server instance in its grace period? */
3603 if (rfs4_clnt_in_grace(lsp->rls_locker->rl_client)) {
3604 rfs4_lo_state_rele(lsp, FALSE);
3605 if (sp != NULL)
3606 rfs4_state_rele_nounlock(sp);
3607 return (NFS4ERR_GRACE);
3608 }
3609 if (id->bits.type == LOCKID) {
3610 /* Seqid in the future? - that's bad */
3611 if (lsp->rls_lockid.bits.chgseq <
3612 id->bits.chgseq) {
3613 rfs4_lo_state_rele(lsp, FALSE);
3614 if (sp != NULL)
3615 rfs4_state_rele_nounlock(sp);
3616 return (NFS4ERR_BAD_STATEID);
3617 }
3618 /* Seqid in the past? - that's old */
3619 if (lsp->rls_lockid.bits.chgseq >
3620 id->bits.chgseq) {
3621 rfs4_lo_state_rele(lsp, FALSE);
3622 if (sp != NULL)
3623 rfs4_state_rele_nounlock(sp);
3624 return (NFS4ERR_OLD_STATEID);
3625 }
3626 /* Ensure specified filehandle matches */
3627 if (lsp->rls_state->rs_finfo->rf_vp != vp) {
3628 rfs4_lo_state_rele(lsp, FALSE);
3629 if (sp != NULL)
3630 rfs4_state_rele_nounlock(sp);
3631 return (NFS4ERR_BAD_STATEID);
3632 }
3633 }
3634 if (ct != NULL) {
3635 ct->cc_sysid =
3636 lsp->rls_locker->rl_client->rc_sysidt;
3637 ct->cc_pid = lsp->rls_locker->rl_pid;
3638 }
3639 rfs4_lo_state_rele(lsp, FALSE);
3640 }
3641
3642 /* Stateid provided was an "open" stateid */
3643 if (sp != NULL) {
3644 /* Is associated server instance in its grace period? */
3645 if (rfs4_clnt_in_grace(sp->rs_owner->ro_client)) {
3646 rfs4_state_rele_nounlock(sp);
3647 return (NFS4ERR_GRACE);
3648 }
3649 if (id->bits.type == OPENID) {
3650 /* Seqid in the future? - that's bad */
3651 if (sp->rs_stateid.bits.chgseq <
3652 id->bits.chgseq) {
3653 rfs4_state_rele_nounlock(sp);
3654 return (NFS4ERR_BAD_STATEID);
3655 }
3656 /* Seqid in the past - that's old */
3657 if (sp->rs_stateid.bits.chgseq >
3658 id->bits.chgseq) {
3659 rfs4_state_rele_nounlock(sp);
3660 return (NFS4ERR_OLD_STATEID);
3661 }
3662 }
3663 /* Ensure specified filehandle matches */
3664 if (sp->rs_finfo->rf_vp != vp) {
3665 rfs4_state_rele_nounlock(sp);
3666 return (NFS4ERR_BAD_STATEID);
3667 }
3668
3669 if (sp->rs_owner->ro_need_confirm) {
3670 rfs4_state_rele_nounlock(sp);
3671 return (NFS4ERR_BAD_STATEID);
3672 }
3673
3674 if (sp->rs_closed == TRUE) {
3675 rfs4_state_rele_nounlock(sp);
3676 return (NFS4ERR_OLD_STATEID);
3677 }
3678
3679 if (do_access)
3680 stat = rfs4_state_has_access(sp, mode, vp);
3681 else
3682 stat = NFS4_OK;
3683
3684 /*
3685 * Return whether this state has write
3686 * delegation if desired
3687 */
3688 if (deleg && (sp->rs_finfo->rf_dinfo.rd_dtype ==
3689 OPEN_DELEGATE_WRITE))
3690 *deleg = TRUE;
3691
3692 /*
3693 * We got a valid stateid, so we update the
3694 * lease on the client. Ideally we would like
3695 * to do this after the calling op succeeds,
3696 * but for now this will be good
3697 * enough. Callers of this routine are
3698 * currently insulated from the state stuff.
3699 */
3700 rfs4_update_lease(sp->rs_owner->ro_client);
3701
3702 /*
3703 * If a delegation is present on this file and
3704 * this is a WRITE, then update the lastwrite
3705 * time to indicate that activity is present.
3706 */
3707 if (sp->rs_finfo->rf_dinfo.rd_dtype ==
3708 OPEN_DELEGATE_WRITE &&
3709 mode == FWRITE) {
3710 sp->rs_finfo->rf_dinfo.rd_time_lastwrite =
3711 gethrestime_sec();
3712 }
3713
3714 rfs4_state_rele_nounlock(sp);
3715
3716 return (stat);
3717 }
3718
3719 if (dsp != NULL) {
3720 /* Is associated server instance in its grace period? */
3721 if (rfs4_clnt_in_grace(dsp->rds_client)) {
3722 rfs4_deleg_state_rele(dsp);
3723 return (NFS4ERR_GRACE);
3724 }
3725 if (dsp->rds_delegid.bits.chgseq != id->bits.chgseq) {
3726 rfs4_deleg_state_rele(dsp);
3727 return (NFS4ERR_BAD_STATEID);
3728 }
3729
3730 /* Ensure specified filehandle matches */
3731 if (dsp->rds_finfo->rf_vp != vp) {
3732 rfs4_deleg_state_rele(dsp);
3733 return (NFS4ERR_BAD_STATEID);
3734 }
3735 /*
3736 * Return whether this state has write
3737 * delegation if desired
3738 */
3739 if (deleg && (dsp->rds_finfo->rf_dinfo.rd_dtype ==
3740 OPEN_DELEGATE_WRITE))
3741 *deleg = TRUE;
3742
3743 rfs4_update_lease(dsp->rds_client);
3744
3745 /*
3746 * If a delegation is present on this file and
3747 * this is a WRITE, then update the lastwrite
3748 * time to indicate that activity is present.
3749 */
3750 if (dsp->rds_finfo->rf_dinfo.rd_dtype ==
3751 OPEN_DELEGATE_WRITE && mode == FWRITE) {
3752 dsp->rds_finfo->rf_dinfo.rd_time_lastwrite =
3753 gethrestime_sec();
3754 }
3755
3756 /*
3757 * XXX - what happens if this is a WRITE and the
3758 * delegation type of for READ.
3759 */
3760 rfs4_deleg_state_rele(dsp);
3761
3762 return (stat);
3763 }
3764 /*
3765 * If we got this far, something bad happened
3766 */
3767 return (NFS4ERR_BAD_STATEID);
3768 }
3769 }
3770
3771
3772 /*
3773 * This is a special function in that for the file struct provided the
3774 * server wants to remove/close all current state associated with the
3775 * file. The prime use of this would be with OP_REMOVE to force the
3776 * release of state and particularly of file locks.
3777 *
3778 * There is an assumption that there is no delegations outstanding on
3779 * this file at this point. The caller should have waited for those
3780 * to be returned or revoked.
3781 */
3782 void
rfs4_close_all_state(rfs4_file_t * fp)3783 rfs4_close_all_state(rfs4_file_t *fp)
3784 {
3785 rfs4_state_t *sp;
3786
3787 rfs4_dbe_lock(fp->rf_dbe);
3788
3789 #ifdef DEBUG
3790 /* only applies when server is handing out delegations */
3791 if (rfs4_deleg_policy != SRV_NEVER_DELEGATE)
3792 ASSERT(fp->rf_dinfo.rd_hold_grant > 0);
3793 #endif
3794
3795 /* No delegations for this file */
3796 ASSERT(list_is_empty(&fp->rf_delegstatelist));
3797
3798 /* Make sure that it can not be found */
3799 rfs4_dbe_invalidate(fp->rf_dbe);
3800
3801 if (fp->rf_vp == NULL) {
3802 rfs4_dbe_unlock(fp->rf_dbe);
3803 return;
3804 }
3805 rfs4_dbe_unlock(fp->rf_dbe);
3806
3807 /*
3808 * Hold as writer to prevent other server threads from
3809 * processing requests related to the file while all state is
3810 * being removed.
3811 */
3812 rw_enter(&fp->rf_file_rwlock, RW_WRITER);
3813
3814 /* Remove ALL state from the file */
3815 while (sp = rfs4_findstate_by_file(fp)) {
3816 rfs4_state_close(sp, FALSE, FALSE, CRED());
3817 rfs4_state_rele_nounlock(sp);
3818 }
3819
3820 /*
3821 * This is only safe since there are no further references to
3822 * the file.
3823 */
3824 rfs4_dbe_lock(fp->rf_dbe);
3825 if (fp->rf_vp) {
3826 vnode_t *vp = fp->rf_vp;
3827
3828 mutex_enter(&vp->v_vsd_lock);
3829 (void) vsd_set(vp, nfs4_srv_vkey, NULL);
3830 mutex_exit(&vp->v_vsd_lock);
3831 VN_RELE(vp);
3832 fp->rf_vp = NULL;
3833 }
3834 rfs4_dbe_unlock(fp->rf_dbe);
3835
3836 /* Finally let other references to proceed */
3837 rw_exit(&fp->rf_file_rwlock);
3838 }
3839
3840 /*
3841 * This function is used as a target for the rfs4_dbe_walk() call
3842 * below. The purpose of this function is to see if the
3843 * lockowner_state refers to a file that resides within the exportinfo
3844 * export. If so, then remove the lock_owner state (file locks and
3845 * share "locks") for this object since the intent is the server is
3846 * unexporting the specified directory. Be sure to invalidate the
3847 * object after the state has been released
3848 */
3849 static void
rfs4_lo_state_walk_callout(rfs4_entry_t u_entry,void * e)3850 rfs4_lo_state_walk_callout(rfs4_entry_t u_entry, void *e)
3851 {
3852 rfs4_lo_state_t *lsp = (rfs4_lo_state_t *)u_entry;
3853 struct exportinfo *exi = (struct exportinfo *)e;
3854 nfs_fh4_fmt_t fhfmt4, *exi_fhp, *finfo_fhp;
3855 fhandle_t *efhp;
3856
3857 efhp = (fhandle_t *)&exi->exi_fh;
3858 exi_fhp = (nfs_fh4_fmt_t *)&fhfmt4;
3859
3860 FH_TO_FMT4(efhp, exi_fhp);
3861
3862 finfo_fhp = (nfs_fh4_fmt_t *)lsp->rls_state->rs_finfo->
3863 rf_filehandle.nfs_fh4_val;
3864
3865 if (EQFSID(&finfo_fhp->fh4_fsid, &exi_fhp->fh4_fsid) &&
3866 bcmp(&finfo_fhp->fh4_xdata, &exi_fhp->fh4_xdata,
3867 exi_fhp->fh4_xlen) == 0) {
3868 rfs4_state_close(lsp->rls_state, FALSE, FALSE, CRED());
3869 rfs4_dbe_invalidate(lsp->rls_dbe);
3870 rfs4_dbe_invalidate(lsp->rls_state->rs_dbe);
3871 }
3872 }
3873
3874 /*
3875 * This function is used as a target for the rfs4_dbe_walk() call
3876 * below. The purpose of this function is to see if the state refers
3877 * to a file that resides within the exportinfo export. If so, then
3878 * remove the open state for this object since the intent is the
3879 * server is unexporting the specified directory. The main result for
3880 * this type of entry is to invalidate it such it will not be found in
3881 * the future.
3882 */
3883 static void
rfs4_state_walk_callout(rfs4_entry_t u_entry,void * e)3884 rfs4_state_walk_callout(rfs4_entry_t u_entry, void *e)
3885 {
3886 rfs4_state_t *sp = (rfs4_state_t *)u_entry;
3887 struct exportinfo *exi = (struct exportinfo *)e;
3888 nfs_fh4_fmt_t fhfmt4, *exi_fhp, *finfo_fhp;
3889 fhandle_t *efhp;
3890
3891 efhp = (fhandle_t *)&exi->exi_fh;
3892 exi_fhp = (nfs_fh4_fmt_t *)&fhfmt4;
3893
3894 FH_TO_FMT4(efhp, exi_fhp);
3895
3896 finfo_fhp =
3897 (nfs_fh4_fmt_t *)sp->rs_finfo->rf_filehandle.nfs_fh4_val;
3898
3899 if (EQFSID(&finfo_fhp->fh4_fsid, &exi_fhp->fh4_fsid) &&
3900 bcmp(&finfo_fhp->fh4_xdata, &exi_fhp->fh4_xdata,
3901 exi_fhp->fh4_xlen) == 0) {
3902 rfs4_state_close(sp, TRUE, FALSE, CRED());
3903 rfs4_dbe_invalidate(sp->rs_dbe);
3904 }
3905 }
3906
3907 /*
3908 * This function is used as a target for the rfs4_dbe_walk() call
3909 * below. The purpose of this function is to see if the state refers
3910 * to a file that resides within the exportinfo export. If so, then
3911 * remove the deleg state for this object since the intent is the
3912 * server is unexporting the specified directory. The main result for
3913 * this type of entry is to invalidate it such it will not be found in
3914 * the future.
3915 */
3916 static void
rfs4_deleg_state_walk_callout(rfs4_entry_t u_entry,void * e)3917 rfs4_deleg_state_walk_callout(rfs4_entry_t u_entry, void *e)
3918 {
3919 rfs4_deleg_state_t *dsp = (rfs4_deleg_state_t *)u_entry;
3920 struct exportinfo *exi = (struct exportinfo *)e;
3921 nfs_fh4_fmt_t fhfmt4, *exi_fhp, *finfo_fhp;
3922 fhandle_t *efhp;
3923
3924 efhp = (fhandle_t *)&exi->exi_fh;
3925 exi_fhp = (nfs_fh4_fmt_t *)&fhfmt4;
3926
3927 FH_TO_FMT4(efhp, exi_fhp);
3928
3929 finfo_fhp =
3930 (nfs_fh4_fmt_t *)dsp->rds_finfo->rf_filehandle.nfs_fh4_val;
3931
3932 if (EQFSID(&finfo_fhp->fh4_fsid, &exi_fhp->fh4_fsid) &&
3933 bcmp(&finfo_fhp->fh4_xdata, &exi_fhp->fh4_xdata,
3934 exi_fhp->fh4_xlen) == 0) {
3935 rfs4_dbe_invalidate(dsp->rds_dbe);
3936 }
3937 }
3938
3939 /*
3940 * This function is used as a target for the rfs4_dbe_walk() call
3941 * below. The purpose of this function is to see if the state refers
3942 * to a file that resides within the exportinfo export. If so, then
3943 * release vnode hold for this object since the intent is the server
3944 * is unexporting the specified directory. Invalidation will prevent
3945 * this struct from being found in the future.
3946 */
3947 static void
rfs4_file_walk_callout(rfs4_entry_t u_entry,void * e)3948 rfs4_file_walk_callout(rfs4_entry_t u_entry, void *e)
3949 {
3950 rfs4_file_t *fp = (rfs4_file_t *)u_entry;
3951 struct exportinfo *exi = (struct exportinfo *)e;
3952 nfs_fh4_fmt_t fhfmt4, *exi_fhp, *finfo_fhp;
3953 fhandle_t *efhp;
3954
3955 efhp = (fhandle_t *)&exi->exi_fh;
3956 exi_fhp = (nfs_fh4_fmt_t *)&fhfmt4;
3957
3958 FH_TO_FMT4(efhp, exi_fhp);
3959
3960 finfo_fhp = (nfs_fh4_fmt_t *)fp->rf_filehandle.nfs_fh4_val;
3961
3962 if (EQFSID(&finfo_fhp->fh4_fsid, &exi_fhp->fh4_fsid) &&
3963 bcmp(&finfo_fhp->fh4_xdata, &exi_fhp->fh4_xdata,
3964 exi_fhp->fh4_xlen) == 0) {
3965 if (fp->rf_vp) {
3966 vnode_t *vp = fp->rf_vp;
3967
3968 /*
3969 * don't leak monitors and remove the reference
3970 * put on the vnode when the delegation was granted.
3971 */
3972 if (fp->rf_dinfo.rd_dtype == OPEN_DELEGATE_READ) {
3973 (void) fem_uninstall(vp, deleg_rdops,
3974 (void *)fp);
3975 vn_open_downgrade(vp, FREAD);
3976 } else if (fp->rf_dinfo.rd_dtype ==
3977 OPEN_DELEGATE_WRITE) {
3978 (void) fem_uninstall(vp, deleg_wrops,
3979 (void *)fp);
3980 vn_open_downgrade(vp, FREAD|FWRITE);
3981 }
3982 mutex_enter(&vp->v_vsd_lock);
3983 (void) vsd_set(vp, nfs4_srv_vkey, NULL);
3984 mutex_exit(&vp->v_vsd_lock);
3985 VN_RELE(vp);
3986 fp->rf_vp = NULL;
3987 }
3988 rfs4_dbe_invalidate(fp->rf_dbe);
3989 }
3990 }
3991
3992 /*
3993 * Given a directory that is being unexported, cleanup/release all
3994 * state in the server that refers to objects residing underneath this
3995 * particular export. The ordering of the release is important.
3996 * Lock_owner, then state and then file.
3997 */
3998 void
rfs4_clean_state_exi(struct exportinfo * exi)3999 rfs4_clean_state_exi(struct exportinfo *exi)
4000 {
4001 mutex_enter(&rfs4_state_lock);
4002
4003 if (rfs4_server_state == NULL) {
4004 mutex_exit(&rfs4_state_lock);
4005 return;
4006 }
4007
4008 rfs4_dbe_walk(rfs4_lo_state_tab, rfs4_lo_state_walk_callout, exi);
4009 rfs4_dbe_walk(rfs4_state_tab, rfs4_state_walk_callout, exi);
4010 rfs4_dbe_walk(rfs4_deleg_state_tab, rfs4_deleg_state_walk_callout, exi);
4011 rfs4_dbe_walk(rfs4_file_tab, rfs4_file_walk_callout, exi);
4012
4013 mutex_exit(&rfs4_state_lock);
4014 }
4015