2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2009 Rick Macklem, University of Guelph
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 #include <sys/cdefs.h>
31 __FBSDID("$FreeBSD$");
34 * These functions implement the client side state handling for NFSv4.
35 * NFSv4 state handling:
36 * - A lockowner is used to determine lock contention, so it
37 * corresponds directly to a Posix pid. (1 to 1 mapping)
38 * - The correct granularity of an OpenOwner is not nearly so
39 * obvious. An OpenOwner does the following:
40 * - provides a serial sequencing of Open/Close/Lock-with-new-lockowner
41 * - is used to check for Open/Share contention (not applicable to
42 * this client, since all Opens are Deny_None)
43 * As such, I considered both extreme.
44 * 1 OpenOwner per ClientID - Simple to manage, but fully serializes
45 * all Open, Close and Lock (with a new lockowner) Ops.
46 * 1 OpenOwner for each Open - This one results in an OpenConfirm for
47 * every Open, for most servers.
48 * So, I chose to use the same mapping as I did for LockOwnwers.
49 * The main concern here is that you can end up with multiple Opens
50 * for the same File Handle, but on different OpenOwners (opens
51 * inherited from parents, grandparents...) and you do not know
52 * which of these the vnodeop close applies to. This is handled by
53 * delaying the Close Op(s) until all of the Opens have been closed.
54 * (It is not yet obvious if this is the correct granularity.)
55 * - How the code handles serialization:
56 * - For the ClientId, it uses an exclusive lock while getting its
57 * SetClientId and during recovery. Otherwise, it uses a shared
58 * lock via a reference count.
59 * - For the rest of the data structures, it uses an SMP mutex
60 * (once the nfs client is SMP safe) and doesn't sleep while
61 * manipulating the linked lists.
62 * - The serialization of Open/Close/Lock/LockU falls out in the
63 * "wash", since OpenOwners and LockOwners are both mapped from
64 * Posix pid. In other words, there is only one Posix pid using
65 * any given owner, so that owner is serialized. (If you change
66 * the granularity of the OpenOwner, then code must be added to
67 * serialize Ops on the OpenOwner.)
68 * - When to get rid of OpenOwners and LockOwners.
69 * - The function nfscl_cleanup_common() is executed after a process exits.
70 * It goes through the client list looking for all Open and Lock Owners.
71 * When one is found, it is marked "defunct" or in the case of
72 * an OpenOwner without any Opens, freed.
73 * The renew thread scans for defunct Owners and gets rid of them,
74 * if it can. The LockOwners will also be deleted when the
75 * associated Open is closed.
76 * - If the LockU or Close Op(s) fail during close in a way
77 * that could be recovered upon retry, they are relinked to the
78 * ClientId's defunct open list and retried by the renew thread
79 * until they succeed or an unmount/recovery occurs.
80 * (Since we are done with them, they do not need to be recovered.)
83 #include <fs/nfs/nfsport.h>
88 extern struct nfsstatsv1 nfsstatsv1;
89 extern struct nfsreqhead nfsd_reqq;
90 extern u_int32_t newnfs_false, newnfs_true;
91 extern int nfscl_debuglevel;
92 extern int nfscl_enablecallb;
93 extern int nfs_numnfscbd;
97 struct nfsclhead nfsclhead; /* Head of clientid list */
98 int nfscl_deleghighwater = NFSCLDELEGHIGHWATER;
99 int nfscl_layouthighwater = NFSCLLAYOUTHIGHWATER;
101 static int nfscl_delegcnt = 0;
102 static int nfscl_layoutcnt = 0;
103 static int nfscl_getopen(struct nfsclownerhead *, struct nfsclopenhash *,
104 u_int8_t *, int, u_int8_t *, u_int8_t *, u_int32_t,
105 struct nfscllockowner **, struct nfsclopen **);
106 static bool nfscl_checkown(struct nfsclowner *, struct nfsclopen *, uint8_t *,
107 uint8_t *, struct nfscllockowner **, struct nfsclopen **,
108 struct nfsclopen **);
109 static void nfscl_clrelease(struct nfsclclient *);
110 static void nfscl_cleanclient(struct nfsclclient *);
111 static void nfscl_expireclient(struct nfsclclient *, struct nfsmount *,
112 struct ucred *, NFSPROC_T *);
113 static int nfscl_expireopen(struct nfsclclient *, struct nfsclopen *,
114 struct nfsmount *, struct ucred *, NFSPROC_T *);
115 static void nfscl_recover(struct nfsclclient *, bool *, struct ucred *,
117 static void nfscl_insertlock(struct nfscllockowner *, struct nfscllock *,
118 struct nfscllock *, int);
119 static int nfscl_updatelock(struct nfscllockowner *, struct nfscllock **,
120 struct nfscllock **, int);
121 static void nfscl_delegreturnall(struct nfsclclient *, NFSPROC_T *);
122 static u_int32_t nfscl_nextcbident(void);
123 static mount_t nfscl_getmnt(int, uint8_t *, u_int32_t, struct nfsclclient **);
124 static struct nfsclclient *nfscl_getclnt(u_int32_t);
125 static struct nfsclclient *nfscl_getclntsess(uint8_t *);
126 static struct nfscldeleg *nfscl_finddeleg(struct nfsclclient *, u_int8_t *,
128 static void nfscl_retoncloselayout(vnode_t, struct nfsclclient *, uint8_t *,
129 int, struct nfsclrecalllayout **);
130 static void nfscl_reldevinfo_locked(struct nfscldevinfo *);
131 static struct nfscllayout *nfscl_findlayout(struct nfsclclient *, u_int8_t *,
133 static struct nfscldevinfo *nfscl_finddevinfo(struct nfsclclient *, uint8_t *);
134 static int nfscl_checkconflict(struct nfscllockownerhead *, struct nfscllock *,
135 u_int8_t *, struct nfscllock **);
136 static void nfscl_freealllocks(struct nfscllockownerhead *, int);
137 static int nfscl_localconflict(struct nfsclclient *, u_int8_t *, int,
138 struct nfscllock *, u_int8_t *, struct nfscldeleg *, struct nfscllock **);
139 static void nfscl_newopen(struct nfsclclient *, struct nfscldeleg *,
140 struct nfsclowner **, struct nfsclowner **, struct nfsclopen **,
141 struct nfsclopen **, u_int8_t *, u_int8_t *, int, struct ucred *, int *);
142 static int nfscl_moveopen(vnode_t , struct nfsclclient *,
143 struct nfsmount *, struct nfsclopen *, struct nfsclowner *,
144 struct nfscldeleg *, struct ucred *, NFSPROC_T *);
145 static void nfscl_totalrecall(struct nfsclclient *);
146 static int nfscl_relock(vnode_t , struct nfsclclient *, struct nfsmount *,
147 struct nfscllockowner *, struct nfscllock *, struct ucred *, NFSPROC_T *);
148 static int nfscl_tryopen(struct nfsmount *, vnode_t , u_int8_t *, int,
149 u_int8_t *, int, u_int32_t, struct nfsclopen *, u_int8_t *, int,
150 struct nfscldeleg **, int, u_int32_t, struct ucred *, NFSPROC_T *);
151 static int nfscl_trylock(struct nfsmount *, vnode_t , u_int8_t *,
152 int, struct nfscllockowner *, int, int, u_int64_t, u_int64_t, short,
153 struct ucred *, NFSPROC_T *);
154 static int nfsrpc_reopen(struct nfsmount *, u_int8_t *, int, u_int32_t,
155 struct nfsclopen *, struct nfscldeleg **, struct ucred *, NFSPROC_T *);
156 static void nfscl_freedeleg(struct nfscldeleghead *, struct nfscldeleg *,
158 static int nfscl_errmap(struct nfsrv_descript *, u_int32_t);
159 static void nfscl_cleanup_common(struct nfsclclient *, u_int8_t *);
160 static int nfscl_recalldeleg(struct nfsclclient *, struct nfsmount *,
161 struct nfscldeleg *, vnode_t, struct ucred *, NFSPROC_T *, int,
163 static void nfscl_freeopenowner(struct nfsclowner *, int);
164 static void nfscl_cleandeleg(struct nfscldeleg *);
165 static void nfscl_emptylockowner(struct nfscllockowner *,
166 struct nfscllockownerfhhead *);
167 static void nfscl_mergeflayouts(struct nfsclflayouthead *,
168 struct nfsclflayouthead *);
169 static int nfscl_layoutrecall(int, struct nfscllayout *, uint32_t, uint64_t,
170 uint64_t, uint32_t, uint32_t, uint32_t, char *, struct nfsclrecalllayout *);
171 static int nfscl_seq(uint32_t, uint32_t);
172 static void nfscl_layoutreturn(struct nfsmount *, struct nfscllayout *,
173 struct ucred *, NFSPROC_T *);
174 static void nfscl_dolayoutcommit(struct nfsmount *, struct nfscllayout *,
175 struct ucred *, NFSPROC_T *);
177 static short nfscberr_null[] = {
182 static short nfscberr_getattr[] = {
191 static short nfscberr_recall[] = {
201 static short *nfscl_cberrmap[] = {
209 #define NETFAMILY(clp) \
210 (((clp)->nfsc_flags & NFSCLFLAGS_AFINET6) ? AF_INET6 : AF_INET)
213 * Called for an open operation.
214 * If the nfhp argument is NULL, just get an openowner.
217 nfscl_open(vnode_t vp, u_int8_t *nfhp, int fhlen, u_int32_t amode, int usedeleg,
218 struct ucred *cred, NFSPROC_T *p, struct nfsclowner **owpp,
219 struct nfsclopen **opp, int *newonep, int *retp, int lockit)
221 struct nfsclclient *clp;
222 struct nfsclowner *owp, *nowp;
223 struct nfsclopen *op = NULL, *nop = NULL;
224 struct nfscldeleg *dp;
225 struct nfsclownerhead *ohp;
226 u_int8_t own[NFSV4CL_LOCKNAMELEN];
237 * Might need one or both of these, so MALLOC them now, to
238 * avoid a tsleep() in MALLOC later.
240 nowp = malloc(sizeof (struct nfsclowner),
241 M_NFSCLOWNER, M_WAITOK);
243 nop = malloc(sizeof (struct nfsclopen) +
244 fhlen - 1, M_NFSCLOPEN, M_WAITOK);
245 nop->nfso_hash.le_prev = NULL;
247 ret = nfscl_getcl(vp->v_mount, cred, p, false, &clp);
249 free(nowp, M_NFSCLOWNER);
251 free(nop, M_NFSCLOPEN);
256 * Get the Open iff it already exists.
257 * If none found, add the new one or return error, depending upon
262 /* First check the delegation list */
263 if (nfhp != NULL && usedeleg) {
264 LIST_FOREACH(dp, NFSCLDELEGHASH(clp, nfhp, fhlen), nfsdl_hash) {
265 if (dp->nfsdl_fhlen == fhlen &&
266 !NFSBCMP(nfhp, dp->nfsdl_fh, fhlen)) {
267 if (!(amode & NFSV4OPEN_ACCESSWRITE) ||
268 (dp->nfsdl_flags & NFSCLDL_WRITE))
276 /* For NFSv4.1/4.2 and this option, use a single open_owner. */
277 if (NFSHASONEOPENOWN(VFSTONFS(vp->v_mount)))
278 nfscl_filllockowner(NULL, own, F_POSIX);
280 nfscl_filllockowner(p->td_proc, own, F_POSIX);
282 ohp = &dp->nfsdl_owner;
284 ohp = &clp->nfsc_owner;
285 /* Now, search for an openowner */
286 LIST_FOREACH(owp, ohp, nfsow_list) {
287 if (!NFSBCMP(owp->nfsow_owner, own, NFSV4CL_LOCKNAMELEN))
292 * Create a new open, as required.
294 nfscl_newopen(clp, dp, &owp, &nowp, &op, &nop, own, nfhp, fhlen,
298 * Now, check the mode on the open and return the appropriate
302 if (nfhp != NULL && dp != NULL && nop == NULL)
303 /* new local open on delegation */
304 *retp = NFSCLOPEN_SETCRED;
306 *retp = NFSCLOPEN_OK;
308 if (op != NULL && (amode & ~(op->nfso_mode))) {
309 op->nfso_mode |= amode;
310 if (retp != NULL && dp == NULL)
311 *retp = NFSCLOPEN_DOOPEN;
315 * Serialize modifications to the open owner for multiple threads
316 * within the same process using a read/write sleep lock.
317 * For NFSv4.1 and a single OpenOwner, allow concurrent open operations
318 * by acquiring a shared lock. The close operations still use an
319 * exclusive lock for this case.
322 if (NFSHASONEOPENOWN(VFSTONFS(vp->v_mount))) {
324 * Get a shared lock on the OpenOwner, but first
325 * wait for any pending exclusive lock, so that the
326 * exclusive locker gets priority.
328 nfsv4_lock(&owp->nfsow_rwlock, 0, NULL,
329 NFSCLSTATEMUTEXPTR, NULL);
330 nfsv4_getref(&owp->nfsow_rwlock, NULL,
331 NFSCLSTATEMUTEXPTR, NULL);
333 nfscl_lockexcl(&owp->nfsow_rwlock, NFSCLSTATEMUTEXPTR);
337 free(nowp, M_NFSCLOWNER);
339 free(nop, M_NFSCLOPEN);
348 * Create a new open, as required.
351 nfscl_newopen(struct nfsclclient *clp, struct nfscldeleg *dp,
352 struct nfsclowner **owpp, struct nfsclowner **nowpp, struct nfsclopen **opp,
353 struct nfsclopen **nopp, u_int8_t *own, u_int8_t *fhp, int fhlen,
354 struct ucred *cred, int *newonep)
356 struct nfsclowner *owp = *owpp, *nowp;
357 struct nfsclopen *op, *nop;
367 if (owp == NULL && nowp != NULL) {
368 NFSBCOPY(own, nowp->nfsow_owner, NFSV4CL_LOCKNAMELEN);
369 LIST_INIT(&nowp->nfsow_open);
370 nowp->nfsow_clp = clp;
371 nowp->nfsow_seqid = 0;
372 nowp->nfsow_defunct = 0;
373 nfscl_lockinit(&nowp->nfsow_rwlock);
375 nfsstatsv1.cllocalopenowners++;
376 LIST_INSERT_HEAD(&dp->nfsdl_owner, nowp, nfsow_list);
378 nfsstatsv1.clopenowners++;
379 LIST_INSERT_HEAD(&clp->nfsc_owner, nowp, nfsow_list);
387 /* If an fhp has been specified, create an Open as well. */
389 /* and look for the correct open, based upon FH */
390 LIST_FOREACH(op, &owp->nfsow_open, nfso_list) {
391 if (op->nfso_fhlen == fhlen &&
392 !NFSBCMP(op->nfso_fh, fhp, fhlen))
395 if (op == NULL && nop != NULL) {
398 nop->nfso_opencnt = 0;
399 nop->nfso_posixlock = 1;
400 nop->nfso_fhlen = fhlen;
401 NFSBCOPY(fhp, nop->nfso_fh, fhlen);
402 LIST_INIT(&nop->nfso_lock);
403 nop->nfso_stateid.seqid = 0;
404 nop->nfso_stateid.other[0] = 0;
405 nop->nfso_stateid.other[1] = 0;
406 nop->nfso_stateid.other[2] = 0;
407 KASSERT(cred != NULL, ("%s: cred NULL\n", __func__));
408 newnfs_copyincred(cred, &nop->nfso_cred);
410 TAILQ_REMOVE(&clp->nfsc_deleg, dp, nfsdl_list);
411 TAILQ_INSERT_HEAD(&clp->nfsc_deleg, dp,
413 dp->nfsdl_timestamp = NFSD_MONOSEC + 120;
414 nfsstatsv1.cllocalopens++;
416 LIST_INSERT_HEAD(NFSCLOPENHASH(clp, fhp, fhlen),
418 nfsstatsv1.clopens++;
420 LIST_INSERT_HEAD(&owp->nfsow_open, nop, nfso_list);
432 * Called to find/add a delegation to a client.
435 nfscl_deleg(mount_t mp, struct nfsclclient *clp, u_int8_t *nfhp,
436 int fhlen, struct ucred *cred, NFSPROC_T *p, struct nfscldeleg **dpp)
438 struct nfscldeleg *dp = *dpp, *tdp;
439 struct nfsmount *nmp;
441 KASSERT(mp != NULL, ("nfscl_deleg: mp NULL"));
444 * First, if we have received a Read delegation for a file on a
445 * read/write file system, just return it, because they aren't
448 if (dp != NULL && !NFSMNT_RDONLY(mp) &&
449 (dp->nfsdl_flags & NFSCLDL_READ)) {
450 nfscl_trydelegreturn(dp, cred, nmp, p);
451 free(dp, M_NFSCLDELEG);
457 * Since a delegation might be added to the mount,
458 * set NFSMNTP_DELEGISSUED now. If a delegation already
459 * exagain ists, setting this flag is harmless.
462 nmp->nm_privflag |= NFSMNTP_DELEGISSUED;
465 /* Look for the correct deleg, based upon FH */
467 tdp = nfscl_finddeleg(clp, nfhp, fhlen);
471 return (NFSERR_BADSTATEID);
474 TAILQ_INSERT_HEAD(&clp->nfsc_deleg, dp, nfsdl_list);
475 LIST_INSERT_HEAD(NFSCLDELEGHASH(clp, nfhp, fhlen), dp,
477 dp->nfsdl_timestamp = NFSD_MONOSEC + 120;
478 nfsstatsv1.cldelegates++;
482 * Delegation already exists, what do we do if a new one??
485 printf("Deleg already exists!\n");
486 free(dp, M_NFSCLDELEG);
497 * Find a delegation for this file handle. Return NULL upon failure.
499 static struct nfscldeleg *
500 nfscl_finddeleg(struct nfsclclient *clp, u_int8_t *fhp, int fhlen)
502 struct nfscldeleg *dp;
504 LIST_FOREACH(dp, NFSCLDELEGHASH(clp, fhp, fhlen), nfsdl_hash) {
505 if (dp->nfsdl_fhlen == fhlen &&
506 !NFSBCMP(dp->nfsdl_fh, fhp, fhlen))
513 * Get a stateid for an I/O operation. First, look for an open and iff
514 * found, return either a lockowner stateid or the open stateid.
515 * If no Open is found, just return error and the special stateid of all zeros.
518 nfscl_getstateid(vnode_t vp, u_int8_t *nfhp, int fhlen, u_int32_t mode,
519 int fords, struct ucred *cred, NFSPROC_T *p, nfsv4stateid_t *stateidp,
522 struct nfsclclient *clp;
523 struct nfsclopen *op = NULL, *top;
524 struct nfsclopenhash *oph;
525 struct nfscllockowner *lp;
526 struct nfscldeleg *dp;
528 struct nfsmount *nmp;
529 u_int8_t own[NFSV4CL_LOCKNAMELEN], lockown[NFSV4CL_LOCKNAMELEN];
535 * Initially, just set the special stateid of all zeros.
536 * (Don't do this for a DS, since the special stateid can't be used.)
540 stateidp->other[0] = 0;
541 stateidp->other[1] = 0;
542 stateidp->other[2] = 0;
544 if (vnode_vtype(vp) != VREG)
547 nmp = VFSTONFS(vp->v_mount);
550 * For "oneopenown" mounts, first check for a cached open in the
551 * NFS vnode, that can be used as a stateid. This can only be
552 * done if no delegations have been issued to the mount and no
553 * byte range file locking has been done for the file.
555 if (NFSHASNFSV4N(nmp) && NFSHASONEOPENOWN(nmp) && fords == 0) {
558 if ((nmp->nm_privflag & NFSMNTP_DELEGISSUED) == 0 &&
559 (np->n_flag & NMIGHTBELOCKED) == 0 &&
560 np->n_openstateid != NULL) {
563 np->n_openstateid->nfso_stateid.other[0];
565 np->n_openstateid->nfso_stateid.other[1];
567 np->n_openstateid->nfso_stateid.other[2];
577 clp = nfscl_findcl(nmp);
584 * Wait for recovery to complete.
586 while ((clp->nfsc_flags & NFSCLFLAGS_RECVRINPROG))
587 (void) nfsmsleep(&clp->nfsc_flags, NFSCLSTATEMUTEXPTR,
588 PZERO, "nfsrecvr", NULL);
591 * First, look for a delegation.
593 LIST_FOREACH(dp, NFSCLDELEGHASH(clp, nfhp, fhlen), nfsdl_hash) {
594 if (dp->nfsdl_fhlen == fhlen &&
595 !NFSBCMP(nfhp, dp->nfsdl_fh, fhlen)) {
596 if (!(mode & NFSV4OPEN_ACCESSWRITE) ||
597 (dp->nfsdl_flags & NFSCLDL_WRITE)) {
598 if (NFSHASNFSV4N(nmp))
602 dp->nfsdl_stateid.seqid;
603 stateidp->other[0] = dp->nfsdl_stateid.other[0];
604 stateidp->other[1] = dp->nfsdl_stateid.other[1];
605 stateidp->other[2] = dp->nfsdl_stateid.other[2];
606 if (!(np->n_flag & NDELEGRECALL)) {
607 TAILQ_REMOVE(&clp->nfsc_deleg, dp,
609 TAILQ_INSERT_HEAD(&clp->nfsc_deleg, dp,
611 dp->nfsdl_timestamp = NFSD_MONOSEC +
613 dp->nfsdl_rwlock.nfslock_usecnt++;
614 *lckpp = (void *)&dp->nfsdl_rwlock;
625 * If p != NULL, we want to search the parentage tree
626 * for a matching OpenOwner and use that.
628 if (NFSHASONEOPENOWN(VFSTONFS(vp->v_mount)))
629 nfscl_filllockowner(NULL, own, F_POSIX);
631 nfscl_filllockowner(p->td_proc, own, F_POSIX);
632 nfscl_filllockowner(p->td_proc, lockown, F_POSIX);
634 error = nfscl_getopen(NULL, clp->nfsc_openhash, nfhp, fhlen,
635 own, lockown, mode, &lp, &op);
636 if (error == 0 && lp != NULL && fords == 0) {
637 /* Don't return a lock stateid for a DS. */
638 if (NFSHASNFSV4N(nmp))
641 stateidp->seqid = lp->nfsl_stateid.seqid;
643 lp->nfsl_stateid.other[0];
645 lp->nfsl_stateid.other[1];
647 lp->nfsl_stateid.other[2];
653 /* If not found, just look for any OpenOwner that will work. */
656 oph = NFSCLOPENHASH(clp, nfhp, fhlen);
657 LIST_FOREACH(op, oph, nfso_hash) {
658 if (op->nfso_fhlen == fhlen &&
659 !NFSBCMP(op->nfso_fh, nfhp, fhlen)) {
660 if (top == NULL && (op->nfso_mode &
661 NFSV4OPEN_ACCESSWRITE) != 0 &&
662 (mode & NFSV4OPEN_ACCESSREAD) != 0)
664 if ((mode & op->nfso_mode) == mode) {
665 /* LRU order the hash list. */
666 LIST_REMOVE(op, nfso_hash);
667 LIST_INSERT_HEAD(oph, op, nfso_hash);
674 NFSCL_DEBUG(2, "openmode top=%p\n", top);
675 if (top == NULL || NFSHASOPENMODE(nmp)) {
682 * For read aheads or write behinds, use the open cred.
683 * A read ahead or write behind is indicated by p == NULL.
686 newnfs_copycred(&op->nfso_cred, cred);
690 * No lock stateid, so return the open stateid.
692 if (NFSHASNFSV4N(nmp))
695 stateidp->seqid = op->nfso_stateid.seqid;
696 stateidp->other[0] = op->nfso_stateid.other[0];
697 stateidp->other[1] = op->nfso_stateid.other[1];
698 stateidp->other[2] = op->nfso_stateid.other[2];
704 * Search for a matching file, mode and, optionally, lockowner.
707 nfscl_getopen(struct nfsclownerhead *ohp, struct nfsclopenhash *ohashp,
708 u_int8_t *nfhp, int fhlen, u_int8_t *openown, u_int8_t *lockown,
709 u_int32_t mode, struct nfscllockowner **lpp, struct nfsclopen **opp)
711 struct nfsclowner *owp;
712 struct nfsclopen *op, *rop, *rop2;
713 struct nfsclopenhash *oph;
716 KASSERT(ohp == NULL || ohashp == NULL, ("nfscl_getopen: "
717 "only one of ohp and ohashp can be set"));
721 * rop will be set to the open to be returned. There are three
722 * variants of this, all for an open of the correct file:
723 * 1 - A match of lockown.
724 * 2 - A match of the openown, when no lockown match exists.
725 * 3 - A match for any open, if no openown or lockown match exists.
726 * Looking for #2 over #3 probably isn't necessary, but since
727 * RFC3530 is vague w.r.t. the relationship between openowners and
728 * lockowners, I think this is the safer way to go.
733 /* Search the client list */
734 if (ohashp == NULL) {
735 /* Search the local opens on the delegation. */
736 LIST_FOREACH(owp, ohp, nfsow_list) {
737 /* and look for the correct open */
738 LIST_FOREACH(op, &owp->nfsow_open, nfso_list) {
739 if (op->nfso_fhlen == fhlen &&
740 !NFSBCMP(op->nfso_fh, nfhp, fhlen)
741 && (op->nfso_mode & mode) == mode)
742 keep_looping = nfscl_checkown(owp, op, openown,
743 lockown, lpp, &rop, &rop2);
751 /* Search for matching opens on the hash list. */
752 oph = &ohashp[NFSCLOPENHASHFUNC(nfhp, fhlen)];
753 LIST_FOREACH(op, oph, nfso_hash) {
754 if (op->nfso_fhlen == fhlen &&
755 !NFSBCMP(op->nfso_fh, nfhp, fhlen)
756 && (op->nfso_mode & mode) == mode)
757 keep_looping = nfscl_checkown(op->nfso_own, op,
758 openown, lockown, lpp, &rop, &rop2);
760 /* LRU order the hash list. */
761 LIST_REMOVE(op, nfso_hash);
762 LIST_INSERT_HEAD(oph, op, nfso_hash);
775 /* Check for an owner match. */
777 nfscl_checkown(struct nfsclowner *owp, struct nfsclopen *op, uint8_t *openown,
778 uint8_t *lockown, struct nfscllockowner **lpp, struct nfsclopen **ropp,
779 struct nfsclopen **ropp2)
781 struct nfscllockowner *lp;
786 /* Now look for a matching lockowner. */
787 LIST_FOREACH(lp, &op->nfso_lock, nfsl_list) {
788 if (!NFSBCMP(lp->nfsl_owner, lockown,
789 NFSV4CL_LOCKNAMELEN)) {
796 if (*ropp == NULL && !NFSBCMP(owp->nfsow_owner, openown,
797 NFSV4CL_LOCKNAMELEN)) {
800 keep_looping = false;
804 return (keep_looping);
808 * Release use of an open owner. Called when open operations are done
809 * with the open owner.
812 nfscl_ownerrelease(struct nfsmount *nmp, struct nfsclowner *owp,
813 __unused int error, __unused int candelete, int unlocked)
820 if (NFSHASONEOPENOWN(nmp))
821 nfsv4_relref(&owp->nfsow_rwlock);
823 nfscl_lockunlock(&owp->nfsow_rwlock);
825 nfscl_clrelease(owp->nfsow_clp);
830 * Release use of an open structure under an open owner.
833 nfscl_openrelease(struct nfsmount *nmp, struct nfsclopen *op, int error,
836 struct nfsclclient *clp;
837 struct nfsclowner *owp;
843 if (NFSHASONEOPENOWN(nmp))
844 nfsv4_relref(&owp->nfsow_rwlock);
846 nfscl_lockunlock(&owp->nfsow_rwlock);
847 clp = owp->nfsow_clp;
848 if (error && candelete && op->nfso_opencnt == 0)
849 nfscl_freeopen(op, 0);
850 nfscl_clrelease(clp);
855 * Called to get a clientid structure. It will optionally lock the
856 * client data structures to do the SetClientId/SetClientId_confirm,
857 * but will release that lock and return the clientid with a reference
859 * If the "cred" argument is NULL, a new clientid should not be created.
860 * If the "p" argument is NULL, a SetClientID/SetClientIDConfirm cannot
862 * It always clpp with a reference count on it, unless returning an error.
865 nfscl_getcl(struct mount *mp, struct ucred *cred, NFSPROC_T *p,
866 bool tryminvers, struct nfsclclient **clpp)
868 struct nfsclclient *clp;
869 struct nfsclclient *newclp = NULL;
870 struct nfsmount *nmp;
871 char uuid[HOSTUUIDLEN];
872 int igotlock = 0, error, trystalecnt, clidinusedelay, i;
877 getcredhostuuid(cred, uuid, sizeof uuid);
878 idlen = strlen(uuid);
880 idlen += sizeof (u_int64_t);
882 idlen += sizeof (u_int64_t) + 16; /* 16 random bytes */
884 sizeof (struct nfsclclient) + idlen - 1, M_NFSCLCLIENT,
889 * If a forced dismount is already in progress, don't
890 * allocate a new clientid and get out now. For the case where
891 * clp != NULL, this is a harmless optimization.
893 if (NFSCL_FORCEDISM(mp)) {
896 free(newclp, M_NFSCLCLIENT);
901 if (newclp == NULL) {
906 clp->nfsc_idlen = idlen;
907 LIST_INIT(&clp->nfsc_owner);
908 TAILQ_INIT(&clp->nfsc_deleg);
909 TAILQ_INIT(&clp->nfsc_layout);
910 LIST_INIT(&clp->nfsc_devinfo);
911 for (i = 0; i < NFSCLDELEGHASHSIZE; i++)
912 LIST_INIT(&clp->nfsc_deleghash[i]);
913 for (i = 0; i < NFSCLOPENHASHSIZE; i++)
914 LIST_INIT(&clp->nfsc_openhash[i]);
915 for (i = 0; i < NFSCLLAYOUTHASHSIZE; i++)
916 LIST_INIT(&clp->nfsc_layouthash[i]);
917 clp->nfsc_flags = NFSCLFLAGS_INITED;
918 clp->nfsc_clientidrev = 1;
919 clp->nfsc_cbident = nfscl_nextcbident();
920 nfscl_fillclid(nmp->nm_clval, uuid, clp->nfsc_id,
922 LIST_INSERT_HEAD(&nfsclhead, clp, nfsc_list);
927 free(newclp, M_NFSCLCLIENT);
929 while ((clp->nfsc_flags & NFSCLFLAGS_HASCLIENTID) == 0 && !igotlock &&
930 !NFSCL_FORCEDISM(mp))
931 igotlock = nfsv4_lock(&clp->nfsc_lock, 1, NULL,
932 NFSCLSTATEMUTEXPTR, mp);
935 * Call nfsv4_lock() with "iwantlock == 0" so that it will
936 * wait for a pending exclusive lock request. This gives the
937 * exclusive lock request priority over this shared lock
939 * An exclusive lock on nfsc_lock is used mainly for server
942 nfsv4_lock(&clp->nfsc_lock, 0, NULL, NFSCLSTATEMUTEXPTR, mp);
943 nfsv4_getref(&clp->nfsc_lock, NULL, NFSCLSTATEMUTEXPTR, mp);
945 if (igotlock == 0 && NFSCL_FORCEDISM(mp)) {
947 * Both nfsv4_lock() and nfsv4_getref() know to check
948 * for NFSCL_FORCEDISM() and return without sleeping to
949 * wait for the exclusive lock to be released, since it
950 * might be held by nfscl_umount() and we need to get out
951 * now for that case and not wait until nfscl_umount()
960 * If it needs a clientid, do the setclientid now.
962 if ((clp->nfsc_flags & NFSCLFLAGS_HASCLIENTID) == 0) {
964 panic("nfscl_clget");
965 if (p == NULL || cred == NULL) {
967 nfsv4_unlock(&clp->nfsc_lock, 0);
972 * If RFC3530 Sec. 14.2.33 is taken literally,
973 * NFSERR_CLIDINUSE will be returned persistently for the
974 * case where a new mount of the same file system is using
975 * a different principal. In practice, NFSERR_CLIDINUSE is
976 * only returned when there is outstanding unexpired state
977 * on the clientid. As such, try for twice the lease
978 * interval, if we know what that is. Otherwise, make a
980 * The case of returning NFSERR_STALECLIENTID is far less
981 * likely, but might occur if there is a significant delay
982 * between doing the SetClientID and SetClientIDConfirm Ops,
983 * such that the server throws away the clientid before
984 * receiving the SetClientIDConfirm.
986 if (clp->nfsc_renew > 0)
987 clidinusedelay = NFSCL_LEASE(clp->nfsc_renew) * 2;
989 clidinusedelay = 120;
992 error = nfsrpc_setclient(nmp, clp, 0, NULL, cred, p);
993 if (error == NFSERR_STALECLIENTID ||
994 error == NFSERR_STALEDONTRECOVER ||
995 error == NFSERR_BADSESSION ||
996 error == NFSERR_CLIDINUSE) {
997 (void) nfs_catnap(PZERO, error, "nfs_setcl");
998 } else if (error == NFSERR_MINORVERMISMATCH &&
1000 if (nmp->nm_minorvers > 0)
1001 nmp->nm_minorvers--;
1005 } while (((error == NFSERR_STALECLIENTID ||
1006 error == NFSERR_BADSESSION ||
1007 error == NFSERR_STALEDONTRECOVER) && --trystalecnt > 0) ||
1008 (error == NFSERR_CLIDINUSE && --clidinusedelay > 0) ||
1009 (error == NFSERR_MINORVERMISMATCH && tryminvers));
1012 nfsv4_unlock(&clp->nfsc_lock, 0);
1016 clp->nfsc_flags |= NFSCLFLAGS_HASCLIENTID;
1020 nfsv4_unlock(&clp->nfsc_lock, 1);
1029 * Get a reference to a clientid and return it, if valid.
1031 struct nfsclclient *
1032 nfscl_findcl(struct nfsmount *nmp)
1034 struct nfsclclient *clp;
1037 if (clp == NULL || !(clp->nfsc_flags & NFSCLFLAGS_HASCLIENTID))
1043 * Release the clientid structure. It may be locked or reference counted.
1046 nfscl_clrelease(struct nfsclclient *clp)
1049 if (clp->nfsc_lock.nfslock_lock & NFSV4LOCK_LOCK)
1050 nfsv4_unlock(&clp->nfsc_lock, 0);
1052 nfsv4_relref(&clp->nfsc_lock);
1056 * External call for nfscl_clrelease.
1059 nfscl_clientrelease(struct nfsclclient *clp)
1063 if (clp->nfsc_lock.nfslock_lock & NFSV4LOCK_LOCK)
1064 nfsv4_unlock(&clp->nfsc_lock, 0);
1066 nfsv4_relref(&clp->nfsc_lock);
1071 * Called when wanting to lock a byte region.
1074 nfscl_getbytelock(vnode_t vp, u_int64_t off, u_int64_t len,
1075 short type, struct ucred *cred, NFSPROC_T *p, struct nfsclclient *rclp,
1076 int recovery, void *id, int flags, u_int8_t *rownp, u_int8_t *ropenownp,
1077 struct nfscllockowner **lpp, int *newonep, int *donelocallyp)
1079 struct nfscllockowner *lp;
1080 struct nfsclopen *op;
1081 struct nfsclclient *clp;
1082 struct nfscllockowner *nlp;
1083 struct nfscllock *nlop, *otherlop;
1084 struct nfscldeleg *dp = NULL, *ldp = NULL;
1085 struct nfscllockownerhead *lhp = NULL;
1087 u_int8_t own[NFSV4CL_LOCKNAMELEN], *ownp, openown[NFSV4CL_LOCKNAMELEN];
1089 int error = 0, ret, donelocally = 0;
1092 /* For Lock Ops, the open mode doesn't matter, so use 0 to match any. */
1101 * Might need these, so MALLOC them now, to
1102 * avoid a tsleep() in MALLOC later.
1105 sizeof (struct nfscllockowner), M_NFSCLLOCKOWNER, M_WAITOK);
1107 sizeof (struct nfscllock), M_NFSCLLOCK, M_WAITOK);
1109 sizeof (struct nfscllock), M_NFSCLLOCK, M_WAITOK);
1110 nlop->nfslo_type = type;
1111 nlop->nfslo_first = off;
1112 if (len == NFS64BITSSET) {
1113 nlop->nfslo_end = NFS64BITSSET;
1115 nlop->nfslo_end = off + len;
1116 if (nlop->nfslo_end <= nlop->nfslo_first)
1117 error = NFSERR_INVAL;
1124 error = nfscl_getcl(vp->v_mount, cred, p, false, &clp);
1127 free(nlp, M_NFSCLLOCKOWNER);
1128 free(otherlop, M_NFSCLLOCK);
1129 free(nlop, M_NFSCLLOCK);
1136 openownp = ropenownp;
1138 nfscl_filllockowner(id, own, flags);
1140 if (NFSHASONEOPENOWN(VFSTONFS(vp->v_mount)))
1141 nfscl_filllockowner(NULL, openown, F_POSIX);
1143 nfscl_filllockowner(p->td_proc, openown, F_POSIX);
1149 * First, search for a delegation. If one exists for this file,
1150 * the lock can be done locally against it, so long as there
1151 * isn't a local lock conflict.
1153 ldp = dp = nfscl_finddeleg(clp, np->n_fhp->nfh_fh,
1154 np->n_fhp->nfh_len);
1155 /* Just sanity check for correct type of delegation */
1156 if (dp != NULL && ((dp->nfsdl_flags &
1157 (NFSCLDL_RECALL | NFSCLDL_DELEGRET)) != 0 ||
1159 (dp->nfsdl_flags & NFSCLDL_WRITE) == 0)))
1163 /* Now, find an open and maybe a lockowner. */
1164 ret = nfscl_getopen(&dp->nfsdl_owner, NULL, np->n_fhp->nfh_fh,
1165 np->n_fhp->nfh_len, openownp, ownp, mode, NULL, &op);
1167 ret = nfscl_getopen(NULL, clp->nfsc_openhash,
1168 np->n_fhp->nfh_fh, np->n_fhp->nfh_len, openownp,
1169 ownp, mode, NULL, &op);
1171 lhp = &dp->nfsdl_lock;
1172 TAILQ_REMOVE(&clp->nfsc_deleg, dp, nfsdl_list);
1173 TAILQ_INSERT_HEAD(&clp->nfsc_deleg, dp, nfsdl_list);
1174 dp->nfsdl_timestamp = NFSD_MONOSEC + 120;
1182 * Get the related Open and maybe lockowner.
1184 error = nfscl_getopen(NULL, clp->nfsc_openhash,
1185 np->n_fhp->nfh_fh, np->n_fhp->nfh_len, openownp,
1186 ownp, mode, &lp, &op);
1188 lhp = &op->nfso_lock;
1190 if (!error && !recovery)
1191 error = nfscl_localconflict(clp, np->n_fhp->nfh_fh,
1192 np->n_fhp->nfh_len, nlop, ownp, ldp, NULL);
1195 nfscl_clrelease(clp);
1198 free(nlp, M_NFSCLLOCKOWNER);
1199 free(otherlop, M_NFSCLLOCK);
1200 free(nlop, M_NFSCLLOCK);
1205 * Ok, see if a lockowner exists and create one, as required.
1208 LIST_FOREACH(lp, lhp, nfsl_list) {
1209 if (!NFSBCMP(lp->nfsl_owner, ownp, NFSV4CL_LOCKNAMELEN))
1213 NFSBCOPY(ownp, nlp->nfsl_owner, NFSV4CL_LOCKNAMELEN);
1215 NFSBCOPY(ropenownp, nlp->nfsl_openowner,
1216 NFSV4CL_LOCKNAMELEN);
1218 NFSBCOPY(op->nfso_own->nfsow_owner, nlp->nfsl_openowner,
1219 NFSV4CL_LOCKNAMELEN);
1220 nlp->nfsl_seqid = 0;
1221 nlp->nfsl_lockflags = flags;
1222 nlp->nfsl_inprog = NULL;
1223 nfscl_lockinit(&nlp->nfsl_rwlock);
1224 LIST_INIT(&nlp->nfsl_lock);
1226 nlp->nfsl_open = NULL;
1227 nfsstatsv1.cllocallockowners++;
1229 nlp->nfsl_open = op;
1230 nfsstatsv1.cllockowners++;
1232 LIST_INSERT_HEAD(lhp, nlp, nfsl_list);
1239 * Now, update the byte ranges for locks.
1241 ret = nfscl_updatelock(lp, &nlop, &otherlop, donelocally);
1247 nfscl_clrelease(clp);
1250 * Serial modifications on the lock owner for multiple threads
1251 * for the same process using a read/write lock.
1254 nfscl_lockexcl(&lp->nfsl_rwlock, NFSCLSTATEMUTEXPTR);
1260 free(nlp, M_NFSCLLOCKOWNER);
1262 free(nlop, M_NFSCLLOCK);
1264 free(otherlop, M_NFSCLLOCK);
1271 * Called to unlock a byte range, for LockU.
1274 nfscl_relbytelock(vnode_t vp, u_int64_t off, u_int64_t len,
1275 __unused struct ucred *cred, NFSPROC_T *p, int callcnt,
1276 struct nfsclclient *clp, void *id, int flags,
1277 struct nfscllockowner **lpp, int *dorpcp)
1279 struct nfscllockowner *lp;
1280 struct nfsclopen *op;
1281 struct nfscllock *nlop, *other_lop = NULL;
1282 struct nfscldeleg *dp;
1284 u_int8_t own[NFSV4CL_LOCKNAMELEN];
1292 * Might need these, so MALLOC them now, to
1293 * avoid a tsleep() in MALLOC later.
1296 sizeof (struct nfscllock), M_NFSCLLOCK, M_WAITOK);
1297 nlop->nfslo_type = F_UNLCK;
1298 nlop->nfslo_first = off;
1299 if (len == NFS64BITSSET) {
1300 nlop->nfslo_end = NFS64BITSSET;
1302 nlop->nfslo_end = off + len;
1303 if (nlop->nfslo_end <= nlop->nfslo_first) {
1304 free(nlop, M_NFSCLLOCK);
1305 return (NFSERR_INVAL);
1310 sizeof (struct nfscllock), M_NFSCLLOCK, M_WAITOK);
1313 nfscl_filllockowner(id, own, flags);
1317 dp = nfscl_finddeleg(clp, np->n_fhp->nfh_fh,
1318 np->n_fhp->nfh_len);
1321 * First, unlock any local regions on a delegation.
1324 /* Look for this lockowner. */
1325 LIST_FOREACH(lp, &dp->nfsdl_lock, nfsl_list) {
1326 if (!NFSBCMP(lp->nfsl_owner, own,
1327 NFSV4CL_LOCKNAMELEN))
1331 /* Use other_lop, so nlop is still available */
1332 (void)nfscl_updatelock(lp, &other_lop, NULL, 1);
1336 * Now, find a matching open/lockowner that hasn't already been done,
1337 * as marked by nfsl_inprog.
1341 LIST_FOREACH(op, NFSCLOPENHASH(clp, np->n_fhp->nfh_fh,
1342 np->n_fhp->nfh_len), nfso_hash) {
1343 if (op->nfso_fhlen == np->n_fhp->nfh_len &&
1344 !NFSBCMP(op->nfso_fh, np->n_fhp->nfh_fh, op->nfso_fhlen)) {
1345 LIST_FOREACH(lp, &op->nfso_lock, nfsl_list) {
1346 if (lp->nfsl_inprog == NULL &&
1347 !NFSBCMP(lp->nfsl_owner, own,
1348 NFSV4CL_LOCKNAMELEN)) {
1359 ret = nfscl_updatelock(lp, &nlop, NULL, 0);
1363 * Serial modifications on the lock owner for multiple
1364 * threads for the same process using a read/write lock.
1366 lp->nfsl_inprog = p;
1367 nfscl_lockexcl(&lp->nfsl_rwlock, NFSCLSTATEMUTEXPTR);
1372 free(nlop, M_NFSCLLOCK);
1374 free(other_lop, M_NFSCLLOCK);
1379 * Release all lockowners marked in progess for this process and file.
1382 nfscl_releasealllocks(struct nfsclclient *clp, vnode_t vp, NFSPROC_T *p,
1383 void *id, int flags)
1385 struct nfsclopen *op;
1386 struct nfscllockowner *lp;
1388 u_int8_t own[NFSV4CL_LOCKNAMELEN];
1391 nfscl_filllockowner(id, own, flags);
1393 LIST_FOREACH(op, NFSCLOPENHASH(clp, np->n_fhp->nfh_fh,
1394 np->n_fhp->nfh_len), nfso_hash) {
1395 if (op->nfso_fhlen == np->n_fhp->nfh_len &&
1396 !NFSBCMP(op->nfso_fh, np->n_fhp->nfh_fh, op->nfso_fhlen)) {
1397 LIST_FOREACH(lp, &op->nfso_lock, nfsl_list) {
1398 if (lp->nfsl_inprog == p &&
1399 !NFSBCMP(lp->nfsl_owner, own,
1400 NFSV4CL_LOCKNAMELEN)) {
1401 lp->nfsl_inprog = NULL;
1402 nfscl_lockunlock(&lp->nfsl_rwlock);
1407 nfscl_clrelease(clp);
1412 * Called to find out if any bytes within the byte range specified are
1413 * write locked by the calling process. Used to determine if flushing
1414 * is required before a LockU.
1415 * If in doubt, return 1, so the flush will occur.
1418 nfscl_checkwritelocked(vnode_t vp, struct flock *fl,
1419 struct ucred *cred, NFSPROC_T *p, void *id, int flags)
1421 struct nfscllockowner *lp;
1422 struct nfsclopen *op;
1423 struct nfsclclient *clp;
1424 struct nfscllock *lop;
1425 struct nfscldeleg *dp;
1428 u_int8_t own[NFSV4CL_LOCKNAMELEN];
1432 switch (fl->l_whence) {
1436 * Caller is responsible for adding any necessary offset
1437 * when SEEK_CUR is used.
1442 off = np->n_size + fl->l_start;
1447 if (fl->l_len != 0) {
1448 end = off + fl->l_len;
1455 error = nfscl_getcl(vp->v_mount, cred, p, false, &clp);
1458 nfscl_filllockowner(id, own, flags);
1462 * First check the delegation locks.
1464 dp = nfscl_finddeleg(clp, np->n_fhp->nfh_fh, np->n_fhp->nfh_len);
1466 LIST_FOREACH(lp, &dp->nfsdl_lock, nfsl_list) {
1467 if (!NFSBCMP(lp->nfsl_owner, own,
1468 NFSV4CL_LOCKNAMELEN))
1472 LIST_FOREACH(lop, &lp->nfsl_lock, nfslo_list) {
1473 if (lop->nfslo_first >= end)
1475 if (lop->nfslo_end <= off)
1477 if (lop->nfslo_type == F_WRLCK) {
1478 nfscl_clrelease(clp);
1487 * Now, check state against the server.
1489 LIST_FOREACH(op, NFSCLOPENHASH(clp, np->n_fhp->nfh_fh,
1490 np->n_fhp->nfh_len), nfso_hash) {
1491 if (op->nfso_fhlen == np->n_fhp->nfh_len &&
1492 !NFSBCMP(op->nfso_fh, np->n_fhp->nfh_fh, op->nfso_fhlen)) {
1493 LIST_FOREACH(lp, &op->nfso_lock, nfsl_list) {
1494 if (!NFSBCMP(lp->nfsl_owner, own,
1495 NFSV4CL_LOCKNAMELEN))
1499 LIST_FOREACH(lop, &lp->nfsl_lock, nfslo_list) {
1500 if (lop->nfslo_first >= end)
1502 if (lop->nfslo_end <= off)
1504 if (lop->nfslo_type == F_WRLCK) {
1505 nfscl_clrelease(clp);
1513 nfscl_clrelease(clp);
1519 * Release a byte range lock owner structure.
1522 nfscl_lockrelease(struct nfscllockowner *lp, int error, int candelete)
1524 struct nfsclclient *clp;
1529 clp = lp->nfsl_open->nfso_own->nfsow_clp;
1530 if (error != 0 && candelete &&
1531 (lp->nfsl_rwlock.nfslock_lock & NFSV4LOCK_WANTED) == 0)
1532 nfscl_freelockowner(lp, 0);
1534 nfscl_lockunlock(&lp->nfsl_rwlock);
1535 nfscl_clrelease(clp);
1540 * Free up an open structure and any associated byte range lock structures.
1543 nfscl_freeopen(struct nfsclopen *op, int local)
1546 LIST_REMOVE(op, nfso_list);
1547 if (op->nfso_hash.le_prev != NULL)
1548 LIST_REMOVE(op, nfso_hash);
1549 nfscl_freealllocks(&op->nfso_lock, local);
1550 free(op, M_NFSCLOPEN);
1552 nfsstatsv1.cllocalopens--;
1554 nfsstatsv1.clopens--;
1558 * Free up all lock owners and associated locks.
1561 nfscl_freealllocks(struct nfscllockownerhead *lhp, int local)
1563 struct nfscllockowner *lp, *nlp;
1565 LIST_FOREACH_SAFE(lp, lhp, nfsl_list, nlp) {
1566 if ((lp->nfsl_rwlock.nfslock_lock & NFSV4LOCK_WANTED))
1568 nfscl_freelockowner(lp, local);
1573 * Called for an Open when NFSERR_EXPIRED is received from the server.
1574 * If there are no byte range locks nor a Share Deny lost, try to do a
1575 * fresh Open. Otherwise, free the open.
1578 nfscl_expireopen(struct nfsclclient *clp, struct nfsclopen *op,
1579 struct nfsmount *nmp, struct ucred *cred, NFSPROC_T *p)
1581 struct nfscllockowner *lp;
1582 struct nfscldeleg *dp;
1583 int mustdelete = 0, error;
1586 * Look for any byte range lock(s).
1588 LIST_FOREACH(lp, &op->nfso_lock, nfsl_list) {
1589 if (!LIST_EMPTY(&lp->nfsl_lock)) {
1596 * If no byte range lock(s) nor a Share deny, try to re-open.
1598 if (!mustdelete && (op->nfso_mode & NFSLCK_DENYBITS) == 0) {
1599 newnfs_copycred(&op->nfso_cred, cred);
1601 error = nfsrpc_reopen(nmp, op->nfso_fh,
1602 op->nfso_fhlen, op->nfso_mode, op, &dp, cred, p);
1606 free(dp, M_NFSCLDELEG);
1611 nfscl_deleg(nmp->nm_mountp, clp, op->nfso_fh,
1612 op->nfso_fhlen, cred, p, &dp);
1616 * If a byte range lock or Share deny or couldn't re-open, free it.
1619 nfscl_freeopen(op, 0);
1620 return (mustdelete);
1624 * Free up an open owner structure.
1627 nfscl_freeopenowner(struct nfsclowner *owp, int local)
1630 LIST_REMOVE(owp, nfsow_list);
1631 free(owp, M_NFSCLOWNER);
1633 nfsstatsv1.cllocalopenowners--;
1635 nfsstatsv1.clopenowners--;
1639 * Free up a byte range lock owner structure.
1642 nfscl_freelockowner(struct nfscllockowner *lp, int local)
1644 struct nfscllock *lop, *nlop;
1646 LIST_REMOVE(lp, nfsl_list);
1647 LIST_FOREACH_SAFE(lop, &lp->nfsl_lock, nfslo_list, nlop) {
1648 nfscl_freelock(lop, local);
1650 free(lp, M_NFSCLLOCKOWNER);
1652 nfsstatsv1.cllocallockowners--;
1654 nfsstatsv1.cllockowners--;
1658 * Free up a byte range lock structure.
1661 nfscl_freelock(struct nfscllock *lop, int local)
1664 LIST_REMOVE(lop, nfslo_list);
1665 free(lop, M_NFSCLLOCK);
1667 nfsstatsv1.cllocallocks--;
1669 nfsstatsv1.cllocks--;
1673 * Clean out the state related to a delegation.
1676 nfscl_cleandeleg(struct nfscldeleg *dp)
1678 struct nfsclowner *owp, *nowp;
1679 struct nfsclopen *op;
1681 LIST_FOREACH_SAFE(owp, &dp->nfsdl_owner, nfsow_list, nowp) {
1682 op = LIST_FIRST(&owp->nfsow_open);
1684 if (LIST_NEXT(op, nfso_list) != NULL)
1685 panic("nfscleandel");
1686 nfscl_freeopen(op, 1);
1688 nfscl_freeopenowner(owp, 1);
1690 nfscl_freealllocks(&dp->nfsdl_lock, 1);
1694 * Free a delegation.
1697 nfscl_freedeleg(struct nfscldeleghead *hdp, struct nfscldeleg *dp, bool freeit)
1700 TAILQ_REMOVE(hdp, dp, nfsdl_list);
1701 LIST_REMOVE(dp, nfsdl_hash);
1703 free(dp, M_NFSCLDELEG);
1704 nfsstatsv1.cldelegates--;
1709 * Free up all state related to this client structure.
1712 nfscl_cleanclient(struct nfsclclient *clp)
1714 struct nfsclowner *owp, *nowp;
1715 struct nfsclopen *op, *nop;
1716 struct nfscllayout *lyp, *nlyp;
1717 struct nfscldevinfo *dip, *ndip;
1719 TAILQ_FOREACH_SAFE(lyp, &clp->nfsc_layout, nfsly_list, nlyp)
1720 nfscl_freelayout(lyp);
1722 LIST_FOREACH_SAFE(dip, &clp->nfsc_devinfo, nfsdi_list, ndip)
1723 nfscl_freedevinfo(dip);
1725 /* Now, all the OpenOwners, etc. */
1726 LIST_FOREACH_SAFE(owp, &clp->nfsc_owner, nfsow_list, nowp) {
1727 LIST_FOREACH_SAFE(op, &owp->nfsow_open, nfso_list, nop) {
1728 nfscl_freeopen(op, 0);
1730 nfscl_freeopenowner(owp, 0);
1735 * Called when an NFSERR_EXPIRED is received from the server.
1738 nfscl_expireclient(struct nfsclclient *clp, struct nfsmount *nmp,
1739 struct ucred *cred, NFSPROC_T *p)
1741 struct nfsclowner *owp, *nowp, *towp;
1742 struct nfsclopen *op, *nop, *top;
1743 struct nfscldeleg *dp, *ndp;
1744 int ret, printed = 0;
1747 * First, merge locally issued Opens into the list for the server.
1749 dp = TAILQ_FIRST(&clp->nfsc_deleg);
1750 while (dp != NULL) {
1751 ndp = TAILQ_NEXT(dp, nfsdl_list);
1752 owp = LIST_FIRST(&dp->nfsdl_owner);
1753 while (owp != NULL) {
1754 nowp = LIST_NEXT(owp, nfsow_list);
1755 op = LIST_FIRST(&owp->nfsow_open);
1757 if (LIST_NEXT(op, nfso_list) != NULL)
1759 LIST_FOREACH(towp, &clp->nfsc_owner, nfsow_list) {
1760 if (!NFSBCMP(towp->nfsow_owner, owp->nfsow_owner,
1761 NFSV4CL_LOCKNAMELEN))
1765 /* Merge opens in */
1766 LIST_FOREACH(top, &towp->nfsow_open, nfso_list) {
1767 if (top->nfso_fhlen == op->nfso_fhlen &&
1768 !NFSBCMP(top->nfso_fh, op->nfso_fh,
1770 top->nfso_mode |= op->nfso_mode;
1771 top->nfso_opencnt += op->nfso_opencnt;
1776 /* Just add the open to the owner list */
1777 LIST_REMOVE(op, nfso_list);
1778 op->nfso_own = towp;
1779 LIST_INSERT_HEAD(&towp->nfsow_open, op, nfso_list);
1780 LIST_INSERT_HEAD(NFSCLOPENHASH(clp, op->nfso_fh,
1781 op->nfso_fhlen), op, nfso_hash);
1782 nfsstatsv1.cllocalopens--;
1783 nfsstatsv1.clopens++;
1786 /* Just add the openowner to the client list */
1787 LIST_REMOVE(owp, nfsow_list);
1788 owp->nfsow_clp = clp;
1789 LIST_INSERT_HEAD(&clp->nfsc_owner, owp, nfsow_list);
1790 LIST_INSERT_HEAD(NFSCLOPENHASH(clp, op->nfso_fh,
1791 op->nfso_fhlen), op, nfso_hash);
1792 nfsstatsv1.cllocalopenowners--;
1793 nfsstatsv1.clopenowners++;
1794 nfsstatsv1.cllocalopens--;
1795 nfsstatsv1.clopens++;
1800 if (!printed && !LIST_EMPTY(&dp->nfsdl_lock)) {
1802 printf("nfsv4 expired locks lost\n");
1804 nfscl_cleandeleg(dp);
1805 nfscl_freedeleg(&clp->nfsc_deleg, dp, true);
1808 if (!TAILQ_EMPTY(&clp->nfsc_deleg))
1812 * Now, try and reopen against the server.
1814 LIST_FOREACH_SAFE(owp, &clp->nfsc_owner, nfsow_list, nowp) {
1815 owp->nfsow_seqid = 0;
1816 LIST_FOREACH_SAFE(op, &owp->nfsow_open, nfso_list, nop) {
1817 ret = nfscl_expireopen(clp, op, nmp, cred, p);
1818 if (ret && !printed) {
1820 printf("nfsv4 expired locks lost\n");
1823 if (LIST_EMPTY(&owp->nfsow_open))
1824 nfscl_freeopenowner(owp, 0);
1829 * This function must be called after the process represented by "own" has
1830 * exited. Must be called with CLSTATE lock held.
1833 nfscl_cleanup_common(struct nfsclclient *clp, u_int8_t *own)
1835 struct nfsclowner *owp, *nowp;
1836 struct nfscllockowner *lp, *nlp;
1837 struct nfscldeleg *dp;
1839 /* First, get rid of local locks on delegations. */
1840 TAILQ_FOREACH(dp, &clp->nfsc_deleg, nfsdl_list) {
1841 LIST_FOREACH_SAFE(lp, &dp->nfsdl_lock, nfsl_list, nlp) {
1842 if (!NFSBCMP(lp->nfsl_owner, own, NFSV4CL_LOCKNAMELEN)) {
1843 if ((lp->nfsl_rwlock.nfslock_lock & NFSV4LOCK_WANTED))
1845 nfscl_freelockowner(lp, 1);
1849 owp = LIST_FIRST(&clp->nfsc_owner);
1850 while (owp != NULL) {
1851 nowp = LIST_NEXT(owp, nfsow_list);
1852 if (!NFSBCMP(owp->nfsow_owner, own,
1853 NFSV4CL_LOCKNAMELEN)) {
1855 * If there are children that haven't closed the
1856 * file descriptors yet, the opens will still be
1857 * here. For that case, let the renew thread clear
1858 * out the OpenOwner later.
1860 if (LIST_EMPTY(&owp->nfsow_open))
1861 nfscl_freeopenowner(owp, 0);
1863 owp->nfsow_defunct = 1;
1870 * Find open/lock owners for processes that have exited.
1873 nfscl_cleanupkext(struct nfsclclient *clp, struct nfscllockownerfhhead *lhp)
1875 struct nfsclowner *owp, *nowp;
1876 struct nfsclopen *op;
1877 struct nfscllockowner *lp, *nlp;
1878 struct nfscldeleg *dp;
1881 * All the pidhash locks must be acquired, since they are sx locks
1882 * and must be acquired before the mutexes. The pid(s) that will
1883 * be used aren't known yet, so all the locks need to be acquired.
1884 * Fortunately, this function is only performed once/sec.
1888 LIST_FOREACH_SAFE(owp, &clp->nfsc_owner, nfsow_list, nowp) {
1889 LIST_FOREACH(op, &owp->nfsow_open, nfso_list) {
1890 LIST_FOREACH_SAFE(lp, &op->nfso_lock, nfsl_list, nlp) {
1891 if (LIST_EMPTY(&lp->nfsl_lock))
1892 nfscl_emptylockowner(lp, lhp);
1895 if (nfscl_procdoesntexist(owp->nfsow_owner))
1896 nfscl_cleanup_common(clp, owp->nfsow_owner);
1900 * For the single open_owner case, these lock owners need to be
1901 * checked to see if they still exist separately.
1902 * This is because nfscl_procdoesntexist() never returns true for
1903 * the single open_owner so that the above doesn't ever call
1904 * nfscl_cleanup_common().
1906 TAILQ_FOREACH(dp, &clp->nfsc_deleg, nfsdl_list) {
1907 LIST_FOREACH_SAFE(lp, &dp->nfsdl_lock, nfsl_list, nlp) {
1908 if (nfscl_procdoesntexist(lp->nfsl_owner))
1909 nfscl_cleanup_common(clp, lp->nfsl_owner);
1913 pidhash_sunlockall();
1917 * Take the empty lock owner and move it to the local lhp list if the
1918 * associated process no longer exists.
1921 nfscl_emptylockowner(struct nfscllockowner *lp,
1922 struct nfscllockownerfhhead *lhp)
1924 struct nfscllockownerfh *lfhp, *mylfhp;
1925 struct nfscllockowner *nlp;
1928 /* If not a Posix lock owner, just return. */
1929 if ((lp->nfsl_lockflags & F_POSIX) == 0)
1935 * First, search to see if this lock owner is already in the list.
1936 * If it is, then the associated process no longer exists.
1938 SLIST_FOREACH(lfhp, lhp, nfslfh_list) {
1939 if (lfhp->nfslfh_len == lp->nfsl_open->nfso_fhlen &&
1940 !NFSBCMP(lfhp->nfslfh_fh, lp->nfsl_open->nfso_fh,
1943 LIST_FOREACH(nlp, &lfhp->nfslfh_lock, nfsl_list)
1944 if (!NFSBCMP(nlp->nfsl_owner, lp->nfsl_owner,
1945 NFSV4CL_LOCKNAMELEN))
1948 /* If not found, check if process still exists. */
1949 if (fnd_it == 0 && nfscl_procdoesntexist(lp->nfsl_owner) == 0)
1952 /* Move the lock owner over to the local list. */
1953 if (mylfhp == NULL) {
1954 mylfhp = malloc(sizeof(struct nfscllockownerfh), M_TEMP,
1958 mylfhp->nfslfh_len = lp->nfsl_open->nfso_fhlen;
1959 NFSBCOPY(lp->nfsl_open->nfso_fh, mylfhp->nfslfh_fh,
1960 mylfhp->nfslfh_len);
1961 LIST_INIT(&mylfhp->nfslfh_lock);
1962 SLIST_INSERT_HEAD(lhp, mylfhp, nfslfh_list);
1964 LIST_REMOVE(lp, nfsl_list);
1965 LIST_INSERT_HEAD(&mylfhp->nfslfh_lock, lp, nfsl_list);
1968 static int fake_global; /* Used to force visibility of MNTK_UNMOUNTF */
1970 * Called from nfs umount to free up the clientid.
1973 nfscl_umount(struct nfsmount *nmp, NFSPROC_T *p)
1975 struct nfsclclient *clp;
1980 * For the case that matters, this is the thread that set
1981 * MNTK_UNMOUNTF, so it will see it set. The code that follows is
1982 * done to ensure that any thread executing nfscl_getcl() after
1983 * this time, will see MNTK_UNMOUNTF set. nfscl_getcl() uses the
1984 * mutex for NFSLOCKCLSTATE(), so it is "m" for the following
1985 * explanation, courtesy of Alan Cox.
1986 * What follows is a snippet from Alan Cox's email at:
1987 * https://docs.FreeBSD.org/cgi/mid.cgi?BANLkTikR3d65zPHo9==08ZfJ2vmqZucEvw
1989 * 1. Set MNTK_UNMOUNTF
1990 * 2. Acquire a standard FreeBSD mutex "m".
1991 * 3. Update some data structures.
1992 * 4. Release mutex "m".
1994 * Then, other threads that acquire "m" after step 4 has occurred will
1995 * see MNTK_UNMOUNTF as set. But, other threads that beat thread X to
1996 * step 2 may or may not see MNTK_UNMOUNTF as set.
1999 if ((nmp->nm_mountp->mnt_kern_flag & MNTK_UNMOUNTF) != 0) {
2007 if ((clp->nfsc_flags & NFSCLFLAGS_INITED) == 0)
2008 panic("nfscl umount");
2011 * First, handshake with the nfscl renew thread, to terminate
2014 clp->nfsc_flags |= NFSCLFLAGS_UMOUNT;
2015 while (clp->nfsc_flags & NFSCLFLAGS_HASTHREAD)
2016 (void)mtx_sleep(clp, NFSCLSTATEMUTEXPTR, PWAIT,
2020 * Now, get the exclusive lock on the client state, so
2021 * that no uses of the state are still in progress.
2024 igotlock = nfsv4_lock(&clp->nfsc_lock, 1, NULL,
2025 NFSCLSTATEMUTEXPTR, NULL);
2026 } while (!igotlock);
2030 * Free up all the state. It will expire on the server, but
2031 * maybe we should do a SetClientId/SetClientIdConfirm so
2032 * the server throws it away?
2034 LIST_REMOVE(clp, nfsc_list);
2035 nfscl_delegreturnall(clp, p);
2036 cred = newnfs_getcred();
2037 if (NFSHASNFSV4N(nmp)) {
2038 (void)nfsrpc_destroysession(nmp, clp, cred, p);
2039 (void)nfsrpc_destroyclient(nmp, clp, cred, p);
2041 (void)nfsrpc_setclient(nmp, clp, 0, NULL, cred, p);
2042 nfscl_cleanclient(clp);
2045 free(clp, M_NFSCLCLIENT);
2051 * This function is called when a server replies with NFSERR_STALECLIENTID
2052 * NFSERR_STALESTATEID or NFSERR_BADSESSION. It traverses the clientid lists,
2053 * doing Opens and Locks with reclaim. If these fail, it deletes the
2054 * corresponding state.
2057 nfscl_recover(struct nfsclclient *clp, bool *retokp, struct ucred *cred,
2060 struct nfsclowner *owp, *nowp;
2061 struct nfsclopen *op, *nop;
2062 struct nfscllockowner *lp, *nlp;
2063 struct nfscllock *lop, *nlop;
2064 struct nfscldeleg *dp, *ndp, *tdp;
2065 struct nfsmount *nmp;
2066 struct ucred *tcred;
2067 struct nfsclopenhead extra_open;
2068 struct nfscldeleghead extra_deleg;
2071 u_int32_t delegtype = NFSV4OPEN_DELEGATEWRITE, mode;
2072 int i, igotlock = 0, error, trycnt, firstlock;
2073 struct nfscllayout *lyp, *nlyp;
2077 * First, lock the client structure, so everyone else will
2078 * block when trying to use state.
2081 clp->nfsc_flags |= NFSCLFLAGS_RECVRINPROG;
2083 igotlock = nfsv4_lock(&clp->nfsc_lock, 1, NULL,
2084 NFSCLSTATEMUTEXPTR, NULL);
2085 } while (!igotlock);
2088 nmp = clp->nfsc_nmp;
2090 panic("nfscl recover");
2093 * For now, just get rid of all layouts. There may be a need
2094 * to do LayoutCommit Ops with reclaim == true later.
2096 TAILQ_FOREACH_SAFE(lyp, &clp->nfsc_layout, nfsly_list, nlyp)
2097 nfscl_freelayout(lyp);
2098 TAILQ_INIT(&clp->nfsc_layout);
2099 for (i = 0; i < NFSCLLAYOUTHASHSIZE; i++)
2100 LIST_INIT(&clp->nfsc_layouthash[i]);
2105 error = nfsrpc_setclient(nmp, clp, 1, retokp, cred, p);
2106 } while ((error == NFSERR_STALECLIENTID ||
2107 error == NFSERR_BADSESSION ||
2108 error == NFSERR_STALEDONTRECOVER) && --trycnt > 0);
2111 clp->nfsc_flags &= ~(NFSCLFLAGS_RECOVER |
2112 NFSCLFLAGS_RECVRINPROG);
2113 wakeup(&clp->nfsc_flags);
2114 nfsv4_unlock(&clp->nfsc_lock, 0);
2118 clp->nfsc_flags |= NFSCLFLAGS_HASCLIENTID;
2119 clp->nfsc_flags &= ~NFSCLFLAGS_RECOVER;
2122 * Mark requests already queued on the server, so that they don't
2123 * initiate another recovery cycle. Any requests already in the
2124 * queue that handle state information will have the old stale
2125 * clientid/stateid and will get a NFSERR_STALESTATEID,
2126 * NFSERR_STALECLIENTID or NFSERR_BADSESSION reply from the server.
2127 * This will be translated to NFSERR_STALEDONTRECOVER when
2128 * R_DONTRECOVER is set.
2131 TAILQ_FOREACH(rep, &nfsd_reqq, r_chain) {
2132 if (rep->r_nmp == nmp)
2133 rep->r_flags |= R_DONTRECOVER;
2138 * If nfsrpc_setclient() returns *retokp == true,
2139 * no more recovery is needed.
2145 * Now, mark all delegations "need reclaim".
2147 TAILQ_FOREACH(dp, &clp->nfsc_deleg, nfsdl_list)
2148 dp->nfsdl_flags |= NFSCLDL_NEEDRECLAIM;
2150 TAILQ_INIT(&extra_deleg);
2151 LIST_INIT(&extra_open);
2153 * Now traverse the state lists, doing Open and Lock Reclaims.
2155 tcred = newnfs_getcred();
2156 recovered_one = false;
2157 owp = LIST_FIRST(&clp->nfsc_owner);
2158 while (owp != NULL) {
2159 nowp = LIST_NEXT(owp, nfsow_list);
2160 owp->nfsow_seqid = 0;
2161 op = LIST_FIRST(&owp->nfsow_open);
2162 while (op != NULL) {
2163 nop = LIST_NEXT(op, nfso_list);
2164 if (error != NFSERR_NOGRACE && error != NFSERR_BADSESSION) {
2165 /* Search for a delegation to reclaim with the open */
2166 TAILQ_FOREACH(dp, &clp->nfsc_deleg, nfsdl_list) {
2167 if (!(dp->nfsdl_flags & NFSCLDL_NEEDRECLAIM))
2169 if ((dp->nfsdl_flags & NFSCLDL_WRITE)) {
2170 mode = NFSV4OPEN_ACCESSWRITE;
2171 delegtype = NFSV4OPEN_DELEGATEWRITE;
2173 mode = NFSV4OPEN_ACCESSREAD;
2174 delegtype = NFSV4OPEN_DELEGATEREAD;
2176 if ((op->nfso_mode & mode) == mode &&
2177 op->nfso_fhlen == dp->nfsdl_fhlen &&
2178 !NFSBCMP(op->nfso_fh, dp->nfsdl_fh, op->nfso_fhlen))
2183 delegtype = NFSV4OPEN_DELEGATENONE;
2184 newnfs_copycred(&op->nfso_cred, tcred);
2185 error = nfscl_tryopen(nmp, NULL, op->nfso_fh,
2186 op->nfso_fhlen, op->nfso_fh, op->nfso_fhlen,
2187 op->nfso_mode, op, NULL, 0, &ndp, 1, delegtype,
2190 recovered_one = true;
2191 /* Handle any replied delegation */
2192 if (ndp != NULL && ((ndp->nfsdl_flags & NFSCLDL_WRITE)
2193 || NFSMNT_RDONLY(nmp->nm_mountp))) {
2194 if ((ndp->nfsdl_flags & NFSCLDL_WRITE))
2195 mode = NFSV4OPEN_ACCESSWRITE;
2197 mode = NFSV4OPEN_ACCESSREAD;
2198 TAILQ_FOREACH(dp, &clp->nfsc_deleg, nfsdl_list) {
2199 if (!(dp->nfsdl_flags & NFSCLDL_NEEDRECLAIM))
2201 if ((op->nfso_mode & mode) == mode &&
2202 op->nfso_fhlen == dp->nfsdl_fhlen &&
2203 !NFSBCMP(op->nfso_fh, dp->nfsdl_fh,
2205 dp->nfsdl_stateid = ndp->nfsdl_stateid;
2206 dp->nfsdl_sizelimit = ndp->nfsdl_sizelimit;
2207 dp->nfsdl_ace = ndp->nfsdl_ace;
2208 dp->nfsdl_change = ndp->nfsdl_change;
2209 dp->nfsdl_flags &= ~NFSCLDL_NEEDRECLAIM;
2210 if ((ndp->nfsdl_flags & NFSCLDL_RECALL))
2211 dp->nfsdl_flags |= NFSCLDL_RECALL;
2212 free(ndp, M_NFSCLDELEG);
2219 TAILQ_INSERT_HEAD(&extra_deleg, ndp, nfsdl_list);
2221 /* and reclaim all byte range locks */
2222 lp = LIST_FIRST(&op->nfso_lock);
2223 while (lp != NULL) {
2224 nlp = LIST_NEXT(lp, nfsl_list);
2227 lop = LIST_FIRST(&lp->nfsl_lock);
2228 while (lop != NULL) {
2229 nlop = LIST_NEXT(lop, nfslo_list);
2230 if (lop->nfslo_end == NFS64BITSSET)
2233 len = lop->nfslo_end - lop->nfslo_first;
2234 error = nfscl_trylock(nmp, NULL,
2235 op->nfso_fh, op->nfso_fhlen, lp,
2236 firstlock, 1, lop->nfslo_first, len,
2237 lop->nfslo_type, tcred, p);
2239 nfscl_freelock(lop, 0);
2244 /* If no locks, but a lockowner, just delete it. */
2245 if (LIST_EMPTY(&lp->nfsl_lock))
2246 nfscl_freelockowner(lp, 0);
2249 } else if (error == NFSERR_NOGRACE && !recovered_one &&
2250 NFSHASNFSV4N(nmp)) {
2252 * For NFSv4.1/4.2, the NFSERR_EXPIRED case will
2253 * actually end up here, since the client will do
2254 * a recovery for NFSERR_BADSESSION, but will get
2255 * an NFSERR_NOGRACE reply for the first "reclaim"
2257 * So, call nfscl_expireclient() to recover the
2258 * opens as best we can and then do a reclaim
2259 * complete and return.
2261 nfsrpc_reclaimcomplete(nmp, cred, p);
2262 nfscl_expireclient(clp, nmp, tcred, p);
2266 if (error != 0 && error != NFSERR_BADSESSION)
2267 nfscl_freeopen(op, 0);
2274 * Now, try and get any delegations not yet reclaimed by cobbling
2275 * to-gether an appropriate open.
2278 dp = TAILQ_FIRST(&clp->nfsc_deleg);
2279 while (dp != NULL) {
2280 ndp = TAILQ_NEXT(dp, nfsdl_list);
2281 if ((dp->nfsdl_flags & NFSCLDL_NEEDRECLAIM)) {
2284 sizeof (struct nfsclowner), M_NFSCLOWNER, M_WAITOK);
2286 * Name must be as long an largest possible
2287 * NFSV4CL_LOCKNAMELEN. 12 for now.
2289 NFSBCOPY("RECLAIMDELEG", nowp->nfsow_owner,
2290 NFSV4CL_LOCKNAMELEN);
2291 LIST_INIT(&nowp->nfsow_open);
2292 nowp->nfsow_clp = clp;
2293 nowp->nfsow_seqid = 0;
2294 nowp->nfsow_defunct = 0;
2295 nfscl_lockinit(&nowp->nfsow_rwlock);
2298 if (error != NFSERR_NOGRACE && error != NFSERR_BADSESSION) {
2299 nop = malloc(sizeof (struct nfsclopen) +
2300 dp->nfsdl_fhlen - 1, M_NFSCLOPEN, M_WAITOK);
2301 nop->nfso_own = nowp;
2302 if ((dp->nfsdl_flags & NFSCLDL_WRITE)) {
2303 nop->nfso_mode = NFSV4OPEN_ACCESSWRITE;
2304 delegtype = NFSV4OPEN_DELEGATEWRITE;
2306 nop->nfso_mode = NFSV4OPEN_ACCESSREAD;
2307 delegtype = NFSV4OPEN_DELEGATEREAD;
2309 nop->nfso_opencnt = 0;
2310 nop->nfso_posixlock = 1;
2311 nop->nfso_fhlen = dp->nfsdl_fhlen;
2312 NFSBCOPY(dp->nfsdl_fh, nop->nfso_fh, dp->nfsdl_fhlen);
2313 LIST_INIT(&nop->nfso_lock);
2314 nop->nfso_stateid.seqid = 0;
2315 nop->nfso_stateid.other[0] = 0;
2316 nop->nfso_stateid.other[1] = 0;
2317 nop->nfso_stateid.other[2] = 0;
2318 newnfs_copycred(&dp->nfsdl_cred, tcred);
2319 newnfs_copyincred(tcred, &nop->nfso_cred);
2321 error = nfscl_tryopen(nmp, NULL, nop->nfso_fh,
2322 nop->nfso_fhlen, nop->nfso_fh, nop->nfso_fhlen,
2323 nop->nfso_mode, nop, NULL, 0, &tdp, 1,
2324 delegtype, tcred, p);
2326 if ((tdp->nfsdl_flags & NFSCLDL_WRITE))
2327 mode = NFSV4OPEN_ACCESSWRITE;
2329 mode = NFSV4OPEN_ACCESSREAD;
2330 if ((nop->nfso_mode & mode) == mode &&
2331 nop->nfso_fhlen == tdp->nfsdl_fhlen &&
2332 !NFSBCMP(nop->nfso_fh, tdp->nfsdl_fh,
2334 dp->nfsdl_stateid = tdp->nfsdl_stateid;
2335 dp->nfsdl_sizelimit = tdp->nfsdl_sizelimit;
2336 dp->nfsdl_ace = tdp->nfsdl_ace;
2337 dp->nfsdl_change = tdp->nfsdl_change;
2338 dp->nfsdl_flags &= ~NFSCLDL_NEEDRECLAIM;
2339 if ((tdp->nfsdl_flags & NFSCLDL_RECALL))
2340 dp->nfsdl_flags |= NFSCLDL_RECALL;
2341 free(tdp, M_NFSCLDELEG);
2343 TAILQ_INSERT_HEAD(&extra_deleg, tdp, nfsdl_list);
2349 free(nop, M_NFSCLOPEN);
2350 if (error == NFSERR_NOGRACE && !recovered_one &&
2351 NFSHASNFSV4N(nmp)) {
2353 * For NFSv4.1/4.2, the NFSERR_EXPIRED case will
2354 * actually end up here, since the client will do
2355 * a recovery for NFSERR_BADSESSION, but will get
2356 * an NFSERR_NOGRACE reply for the first "reclaim"
2358 * So, call nfscl_expireclient() to recover the
2359 * opens as best we can and then do a reclaim
2360 * complete and return.
2362 nfsrpc_reclaimcomplete(nmp, cred, p);
2363 nfscl_expireclient(clp, nmp, tcred, p);
2364 free(nowp, M_NFSCLOWNER);
2368 * Couldn't reclaim it, so throw the state
2371 nfscl_cleandeleg(dp);
2372 nfscl_freedeleg(&clp->nfsc_deleg, dp, true);
2374 recovered_one = true;
2375 LIST_INSERT_HEAD(&extra_open, nop, nfso_list);
2382 * Now, get rid of extra Opens and Delegations.
2384 LIST_FOREACH_SAFE(op, &extra_open, nfso_list, nop) {
2386 newnfs_copycred(&op->nfso_cred, tcred);
2387 error = nfscl_tryclose(op, tcred, nmp, p);
2388 if (error == NFSERR_GRACE)
2389 (void) nfs_catnap(PZERO, error, "nfsexcls");
2390 } while (error == NFSERR_GRACE);
2391 LIST_REMOVE(op, nfso_list);
2392 free(op, M_NFSCLOPEN);
2395 free(nowp, M_NFSCLOWNER);
2397 TAILQ_FOREACH_SAFE(dp, &extra_deleg, nfsdl_list, ndp) {
2399 newnfs_copycred(&dp->nfsdl_cred, tcred);
2400 error = nfscl_trydelegreturn(dp, tcred, nmp, p);
2401 if (error == NFSERR_GRACE)
2402 (void) nfs_catnap(PZERO, error, "nfsexdlg");
2403 } while (error == NFSERR_GRACE);
2404 TAILQ_REMOVE(&extra_deleg, dp, nfsdl_list);
2405 free(dp, M_NFSCLDELEG);
2408 /* For NFSv4.1 or later, do a RECLAIM_COMPLETE. */
2409 if (NFSHASNFSV4N(nmp))
2410 (void)nfsrpc_reclaimcomplete(nmp, cred, p);
2414 clp->nfsc_flags &= ~NFSCLFLAGS_RECVRINPROG;
2415 wakeup(&clp->nfsc_flags);
2416 nfsv4_unlock(&clp->nfsc_lock, 0);
2423 * This function is called when a server replies with NFSERR_EXPIRED.
2424 * It deletes all state for the client and does a fresh SetClientId/confirm.
2425 * XXX Someday it should post a signal to the process(es) that hold the
2426 * state, so they know that lock state has been lost.
2429 nfscl_hasexpired(struct nfsclclient *clp, u_int32_t clidrev, NFSPROC_T *p)
2431 struct nfsmount *nmp;
2433 int igotlock = 0, error, trycnt;
2436 * If the clientid has gone away or a new SetClientid has already
2437 * been done, just return ok.
2439 if (clp == NULL || clidrev != clp->nfsc_clientidrev)
2443 * First, lock the client structure, so everyone else will
2444 * block when trying to use state. Also, use NFSCLFLAGS_EXPIREIT so
2445 * that only one thread does the work.
2448 clp->nfsc_flags |= NFSCLFLAGS_EXPIREIT;
2450 igotlock = nfsv4_lock(&clp->nfsc_lock, 1, NULL,
2451 NFSCLSTATEMUTEXPTR, NULL);
2452 } while (!igotlock && (clp->nfsc_flags & NFSCLFLAGS_EXPIREIT));
2453 if ((clp->nfsc_flags & NFSCLFLAGS_EXPIREIT) == 0) {
2455 nfsv4_unlock(&clp->nfsc_lock, 0);
2459 clp->nfsc_flags |= NFSCLFLAGS_RECVRINPROG;
2462 nmp = clp->nfsc_nmp;
2464 panic("nfscl expired");
2465 cred = newnfs_getcred();
2468 error = nfsrpc_setclient(nmp, clp, 0, NULL, cred, p);
2469 } while ((error == NFSERR_STALECLIENTID ||
2470 error == NFSERR_BADSESSION ||
2471 error == NFSERR_STALEDONTRECOVER) && --trycnt > 0);
2474 clp->nfsc_flags &= ~NFSCLFLAGS_RECOVER;
2477 * Expire the state for the client.
2479 nfscl_expireclient(clp, nmp, cred, p);
2481 clp->nfsc_flags |= NFSCLFLAGS_HASCLIENTID;
2482 clp->nfsc_flags &= ~NFSCLFLAGS_RECOVER;
2484 clp->nfsc_flags &= ~(NFSCLFLAGS_EXPIREIT | NFSCLFLAGS_RECVRINPROG);
2485 wakeup(&clp->nfsc_flags);
2486 nfsv4_unlock(&clp->nfsc_lock, 0);
2493 * This function inserts a lock in the list after insert_lop.
2496 nfscl_insertlock(struct nfscllockowner *lp, struct nfscllock *new_lop,
2497 struct nfscllock *insert_lop, int local)
2500 if ((struct nfscllockowner *)insert_lop == lp)
2501 LIST_INSERT_HEAD(&lp->nfsl_lock, new_lop, nfslo_list);
2503 LIST_INSERT_AFTER(insert_lop, new_lop, nfslo_list);
2505 nfsstatsv1.cllocallocks++;
2507 nfsstatsv1.cllocks++;
2511 * This function updates the locking for a lock owner and given file. It
2512 * maintains a list of lock ranges ordered on increasing file offset that
2513 * are NFSCLLOCK_READ or NFSCLLOCK_WRITE and non-overlapping (aka POSIX style).
2514 * It always adds new_lop to the list and sometimes uses the one pointed
2516 * Returns 1 if the locks were modified, 0 otherwise.
2519 nfscl_updatelock(struct nfscllockowner *lp, struct nfscllock **new_lopp,
2520 struct nfscllock **other_lopp, int local)
2522 struct nfscllock *new_lop = *new_lopp;
2523 struct nfscllock *lop, *tlop, *ilop;
2524 struct nfscllock *other_lop;
2525 int unlock = 0, modified = 0;
2529 * Work down the list until the lock is merged.
2531 if (new_lop->nfslo_type == F_UNLCK)
2533 ilop = (struct nfscllock *)lp;
2534 lop = LIST_FIRST(&lp->nfsl_lock);
2535 while (lop != NULL) {
2537 * Only check locks for this file that aren't before the start of
2540 if (lop->nfslo_end >= new_lop->nfslo_first) {
2541 if (new_lop->nfslo_end < lop->nfslo_first) {
2543 * If the new lock ends before the start of the
2544 * current lock's range, no merge, just insert
2549 if (new_lop->nfslo_type == lop->nfslo_type ||
2550 (new_lop->nfslo_first <= lop->nfslo_first &&
2551 new_lop->nfslo_end >= lop->nfslo_end)) {
2553 * This lock can be absorbed by the new lock/unlock.
2554 * This happens when it covers the entire range
2555 * of the old lock or is contiguous
2556 * with the old lock and is of the same type or an
2559 if (new_lop->nfslo_type != lop->nfslo_type ||
2560 new_lop->nfslo_first != lop->nfslo_first ||
2561 new_lop->nfslo_end != lop->nfslo_end)
2563 if (lop->nfslo_first < new_lop->nfslo_first)
2564 new_lop->nfslo_first = lop->nfslo_first;
2565 if (lop->nfslo_end > new_lop->nfslo_end)
2566 new_lop->nfslo_end = lop->nfslo_end;
2568 lop = LIST_NEXT(lop, nfslo_list);
2569 nfscl_freelock(tlop, local);
2574 * All these cases are for contiguous locks that are not the
2575 * same type, so they can't be merged.
2577 if (new_lop->nfslo_first <= lop->nfslo_first) {
2579 * This case is where the new lock overlaps with the
2580 * first part of the old lock. Move the start of the
2581 * old lock to just past the end of the new lock. The
2582 * new lock will be inserted in front of the old, since
2583 * ilop hasn't been updated. (We are done now.)
2585 if (lop->nfslo_first != new_lop->nfslo_end) {
2586 lop->nfslo_first = new_lop->nfslo_end;
2591 if (new_lop->nfslo_end >= lop->nfslo_end) {
2593 * This case is where the new lock overlaps with the
2594 * end of the old lock's range. Move the old lock's
2595 * end to just before the new lock's first and insert
2596 * the new lock after the old lock.
2597 * Might not be done yet, since the new lock could
2598 * overlap further locks with higher ranges.
2600 if (lop->nfslo_end != new_lop->nfslo_first) {
2601 lop->nfslo_end = new_lop->nfslo_first;
2605 lop = LIST_NEXT(lop, nfslo_list);
2609 * The final case is where the new lock's range is in the
2610 * middle of the current lock's and splits the current lock
2611 * up. Use *other_lopp to handle the second part of the
2612 * split old lock range. (We are done now.)
2613 * For unlock, we use new_lop as other_lop and tmp, since
2614 * other_lop and new_lop are the same for this case.
2615 * We noted the unlock case above, so we don't need
2616 * new_lop->nfslo_type any longer.
2618 tmp = new_lop->nfslo_first;
2620 other_lop = new_lop;
2623 other_lop = *other_lopp;
2626 other_lop->nfslo_first = new_lop->nfslo_end;
2627 other_lop->nfslo_end = lop->nfslo_end;
2628 other_lop->nfslo_type = lop->nfslo_type;
2629 lop->nfslo_end = tmp;
2630 nfscl_insertlock(lp, other_lop, lop, local);
2636 lop = LIST_NEXT(lop, nfslo_list);
2642 * Insert the new lock in the list at the appropriate place.
2645 nfscl_insertlock(lp, new_lop, ilop, local);
2653 * This function must be run as a kernel thread.
2654 * It does Renew Ops and recovery, when required.
2657 nfscl_renewthread(struct nfsclclient *clp, NFSPROC_T *p)
2659 struct nfsclowner *owp, *nowp;
2660 struct nfsclopen *op;
2661 struct nfscllockowner *lp, *nlp;
2662 struct nfscldeleghead dh;
2663 struct nfscldeleg *dp, *ndp;
2666 int error, cbpathdown, islept, igotlock, ret, clearok;
2667 uint32_t recover_done_time = 0;
2669 static time_t prevsec = 0;
2670 struct nfscllockownerfh *lfhp, *nlfhp;
2671 struct nfscllockownerfhhead lfh;
2672 struct nfscllayout *lyp, *nlyp;
2673 struct nfscldevinfo *dip, *ndip;
2674 struct nfscllayouthead rlh;
2675 struct nfsclrecalllayout *recallp;
2676 struct nfsclds *dsp;
2681 cred = newnfs_getcred();
2683 clp->nfsc_flags |= NFSCLFLAGS_HASTHREAD;
2684 mp = clp->nfsc_nmp->nm_mountp;
2687 newnfs_setroot(cred);
2689 if (clp->nfsc_flags & NFSCLFLAGS_RECOVER) {
2691 * Only allow one full recover within 1/2 of the lease
2692 * duration (nfsc_renew).
2693 * retok is value/result. If passed in set to true,
2694 * it indicates only a CreateSession operation should
2696 * If it is returned true, it indicates that the
2697 * recovery only required a CreateSession.
2700 if (recover_done_time < NFSD_MONOSEC) {
2701 recover_done_time = NFSD_MONOSEC +
2705 NFSCL_DEBUG(1, "Doing recovery, only "
2706 "createsession=%d\n", retok);
2707 nfscl_recover(clp, &retok, cred, p);
2709 if (clp->nfsc_expire <= NFSD_MONOSEC &&
2710 (clp->nfsc_flags & NFSCLFLAGS_HASCLIENTID)) {
2711 clp->nfsc_expire = NFSD_MONOSEC + clp->nfsc_renew;
2712 clidrev = clp->nfsc_clientidrev;
2713 error = nfsrpc_renew(clp, NULL, cred, p);
2714 if (error == NFSERR_CBPATHDOWN)
2716 else if (error == NFSERR_STALECLIENTID ||
2717 error == NFSERR_BADSESSION) {
2719 clp->nfsc_flags |= NFSCLFLAGS_RECOVER;
2721 } else if (error == NFSERR_EXPIRED)
2722 (void) nfscl_hasexpired(clp, clidrev, p);
2726 if (NFSHASNFSV4N(clp->nfsc_nmp)) {
2727 /* Do renews for any DS sessions. */
2728 NFSLOCKMNT(clp->nfsc_nmp);
2729 /* Skip first entry, since the MDS is handled above. */
2730 dsp = TAILQ_FIRST(&clp->nfsc_nmp->nm_sess);
2732 dsp = TAILQ_NEXT(dsp, nfsclds_list);
2733 while (dsp != NULL) {
2734 if (dsp->nfsclds_expire <= NFSD_MONOSEC &&
2735 dsp->nfsclds_sess.nfsess_defunct == 0) {
2736 dsp->nfsclds_expire = NFSD_MONOSEC +
2738 NFSUNLOCKMNT(clp->nfsc_nmp);
2739 (void)nfsrpc_renew(clp, dsp, cred, p);
2742 dsp = TAILQ_NEXT(dsp, nfsclds_list);
2744 NFSUNLOCKMNT(clp->nfsc_nmp);
2750 /* It's a Total Recall! */
2751 nfscl_totalrecall(clp);
2754 * Now, handle defunct owners.
2756 LIST_FOREACH_SAFE(owp, &clp->nfsc_owner, nfsow_list, nowp) {
2757 if (LIST_EMPTY(&owp->nfsow_open)) {
2758 if (owp->nfsow_defunct != 0)
2759 nfscl_freeopenowner(owp, 0);
2764 * Do the recall on any delegations. To avoid trouble, always
2765 * come back up here after having slept.
2769 dp = TAILQ_FIRST(&clp->nfsc_deleg);
2770 while (dp != NULL) {
2771 ndp = TAILQ_NEXT(dp, nfsdl_list);
2772 if ((dp->nfsdl_flags & NFSCLDL_RECALL)) {
2774 * Wait for outstanding I/O ops to be done.
2776 if (dp->nfsdl_rwlock.nfslock_usecnt > 0) {
2778 nfsv4_unlock(&clp->nfsc_lock, 0);
2781 dp->nfsdl_rwlock.nfslock_lock |=
2783 msleep(&dp->nfsdl_rwlock,
2784 NFSCLSTATEMUTEXPTR, PVFS, "nfscld",
2786 if (NFSCL_FORCEDISM(mp))
2791 igotlock = nfsv4_lock(&clp->nfsc_lock, 1,
2792 &islept, NFSCLSTATEMUTEXPTR, mp);
2793 if (igotlock == 0 && NFSCL_FORCEDISM(mp))
2799 newnfs_copycred(&dp->nfsdl_cred, cred);
2800 ret = nfscl_recalldeleg(clp, clp->nfsc_nmp, dp,
2801 NULL, cred, p, 1, &vp);
2803 nfscl_cleandeleg(dp);
2804 TAILQ_REMOVE(&clp->nfsc_deleg, dp,
2806 LIST_REMOVE(dp, nfsdl_hash);
2807 TAILQ_INSERT_HEAD(&dh, dp, nfsdl_list);
2809 nfsstatsv1.cldelegates--;
2813 * The nfsc_lock must be released before doing
2814 * vrele(), since it might call nfs_inactive().
2815 * For the unlikely case where the vnode failed
2816 * to be acquired by nfscl_recalldeleg(), a
2817 * VOP_RECLAIM() should be in progress and it
2818 * will return the delegation.
2820 nfsv4_unlock(&clp->nfsc_lock, 0);
2833 * Clear out old delegations, if we are above the high water
2834 * mark. Only clear out ones with no state related to them.
2835 * The tailq list is in LRU order.
2837 dp = TAILQ_LAST(&clp->nfsc_deleg, nfscldeleghead);
2838 while (nfscl_delegcnt > nfscl_deleghighwater && dp != NULL) {
2839 ndp = TAILQ_PREV(dp, nfscldeleghead, nfsdl_list);
2840 if (dp->nfsdl_rwlock.nfslock_usecnt == 0 &&
2841 dp->nfsdl_rwlock.nfslock_lock == 0 &&
2842 dp->nfsdl_timestamp < NFSD_MONOSEC &&
2843 (dp->nfsdl_flags & (NFSCLDL_RECALL | NFSCLDL_ZAPPED |
2844 NFSCLDL_NEEDRECLAIM | NFSCLDL_DELEGRET)) == 0) {
2846 LIST_FOREACH(owp, &dp->nfsdl_owner, nfsow_list) {
2847 op = LIST_FIRST(&owp->nfsow_open);
2854 LIST_FOREACH(lp, &dp->nfsdl_lock, nfsl_list) {
2855 if (!LIST_EMPTY(&lp->nfsl_lock)) {
2862 TAILQ_REMOVE(&clp->nfsc_deleg, dp, nfsdl_list);
2863 LIST_REMOVE(dp, nfsdl_hash);
2864 TAILQ_INSERT_HEAD(&dh, dp, nfsdl_list);
2866 nfsstatsv1.cldelegates--;
2872 nfsv4_unlock(&clp->nfsc_lock, 0);
2875 * Do the recall on any layouts. To avoid trouble, always
2876 * come back up here after having slept.
2880 TAILQ_FOREACH_SAFE(lyp, &clp->nfsc_layout, nfsly_list, nlyp) {
2881 if ((lyp->nfsly_flags & NFSLY_RECALL) != 0) {
2883 * Wait for outstanding I/O ops to be done.
2885 if (lyp->nfsly_lock.nfslock_usecnt > 0 ||
2886 (lyp->nfsly_lock.nfslock_lock &
2887 NFSV4LOCK_LOCK) != 0) {
2888 lyp->nfsly_lock.nfslock_lock |=
2890 msleep(&lyp->nfsly_lock.nfslock_lock,
2891 NFSCLSTATEMUTEXPTR, PVFS, "nfslyp",
2893 if (NFSCL_FORCEDISM(mp))
2897 /* Move the layout to the recall list. */
2898 TAILQ_REMOVE(&clp->nfsc_layout, lyp,
2900 LIST_REMOVE(lyp, nfsly_hash);
2901 TAILQ_INSERT_HEAD(&rlh, lyp, nfsly_list);
2903 /* Handle any layout commits. */
2904 if (!NFSHASNOLAYOUTCOMMIT(clp->nfsc_nmp) &&
2905 (lyp->nfsly_flags & NFSLY_WRITTEN) != 0) {
2906 lyp->nfsly_flags &= ~NFSLY_WRITTEN;
2908 NFSCL_DEBUG(3, "do layoutcommit\n");
2909 nfscl_dolayoutcommit(clp->nfsc_nmp, lyp,
2917 /* Now, look for stale layouts. */
2918 lyp = TAILQ_LAST(&clp->nfsc_layout, nfscllayouthead);
2919 while (lyp != NULL) {
2920 nlyp = TAILQ_PREV(lyp, nfscllayouthead, nfsly_list);
2921 if (lyp->nfsly_timestamp < NFSD_MONOSEC &&
2922 (lyp->nfsly_flags & NFSLY_RECALL) == 0 &&
2923 lyp->nfsly_lock.nfslock_usecnt == 0 &&
2924 lyp->nfsly_lock.nfslock_lock == 0) {
2925 NFSCL_DEBUG(4, "ret stale lay=%d\n",
2927 recallp = malloc(sizeof(*recallp),
2928 M_NFSLAYRECALL, M_NOWAIT);
2929 if (recallp == NULL)
2931 (void)nfscl_layoutrecall(NFSLAYOUTRETURN_FILE,
2932 lyp, NFSLAYOUTIOMODE_ANY, 0, UINT64_MAX,
2933 lyp->nfsly_stateid.seqid, 0, 0, NULL,
2940 * Free up any unreferenced device info structures.
2942 LIST_FOREACH_SAFE(dip, &clp->nfsc_devinfo, nfsdi_list, ndip) {
2943 if (dip->nfsdi_layoutrefs == 0 &&
2944 dip->nfsdi_refcnt == 0) {
2945 NFSCL_DEBUG(4, "freeing devinfo\n");
2946 LIST_REMOVE(dip, nfsdi_list);
2947 nfscl_freedevinfo(dip);
2952 /* Do layout return(s), as required. */
2953 TAILQ_FOREACH_SAFE(lyp, &rlh, nfsly_list, nlyp) {
2954 TAILQ_REMOVE(&rlh, lyp, nfsly_list);
2955 NFSCL_DEBUG(4, "ret layout\n");
2956 nfscl_layoutreturn(clp->nfsc_nmp, lyp, cred, p);
2957 nfscl_freelayout(lyp);
2961 * Delegreturn any delegations cleaned out or recalled.
2963 TAILQ_FOREACH_SAFE(dp, &dh, nfsdl_list, ndp) {
2964 newnfs_copycred(&dp->nfsdl_cred, cred);
2965 (void) nfscl_trydelegreturn(dp, cred, clp->nfsc_nmp, p);
2966 TAILQ_REMOVE(&dh, dp, nfsdl_list);
2967 free(dp, M_NFSCLDELEG);
2972 * Call nfscl_cleanupkext() once per second to check for
2973 * open/lock owners where the process has exited.
2975 mytime = NFSD_MONOSEC;
2976 if (prevsec != mytime) {
2978 nfscl_cleanupkext(clp, &lfh);
2982 * Do a ReleaseLockOwner for all lock owners where the
2983 * associated process no longer exists, as found by
2984 * nfscl_cleanupkext().
2986 newnfs_setroot(cred);
2987 SLIST_FOREACH_SAFE(lfhp, &lfh, nfslfh_list, nlfhp) {
2988 LIST_FOREACH_SAFE(lp, &lfhp->nfslfh_lock, nfsl_list,
2990 (void)nfsrpc_rellockown(clp->nfsc_nmp, lp,
2991 lfhp->nfslfh_fh, lfhp->nfslfh_len, cred,
2993 nfscl_freelockowner(lp, 0);
3000 if ((clp->nfsc_flags & NFSCLFLAGS_RECOVER) == 0)
3001 (void)mtx_sleep(clp, NFSCLSTATEMUTEXPTR, PWAIT, "nfscl",
3004 if (clp->nfsc_flags & NFSCLFLAGS_UMOUNT) {
3005 clp->nfsc_flags &= ~NFSCLFLAGS_HASTHREAD;
3008 wakeup((caddr_t)clp);
3016 * Initiate state recovery. Called when NFSERR_STALECLIENTID,
3017 * NFSERR_STALESTATEID or NFSERR_BADSESSION is received.
3020 nfscl_initiate_recovery(struct nfsclclient *clp)
3026 clp->nfsc_flags |= NFSCLFLAGS_RECOVER;
3028 wakeup((caddr_t)clp);
3032 * Dump out the state stuff for debugging.
3035 nfscl_dumpstate(struct nfsmount *nmp, int openowner, int opens,
3036 int lockowner, int locks)
3038 struct nfsclclient *clp;
3039 struct nfsclowner *owp;
3040 struct nfsclopen *op;
3041 struct nfscllockowner *lp;
3042 struct nfscllock *lop;
3043 struct nfscldeleg *dp;
3047 printf("nfscl dumpstate NULL clp\n");
3051 TAILQ_FOREACH(dp, &clp->nfsc_deleg, nfsdl_list) {
3052 LIST_FOREACH(owp, &dp->nfsdl_owner, nfsow_list) {
3053 if (openowner && !LIST_EMPTY(&owp->nfsow_open))
3054 printf("owner=0x%x 0x%x 0x%x 0x%x seqid=%d\n",
3055 owp->nfsow_owner[0], owp->nfsow_owner[1],
3056 owp->nfsow_owner[2], owp->nfsow_owner[3],
3058 LIST_FOREACH(op, &owp->nfsow_open, nfso_list) {
3060 printf("open st=0x%x 0x%x 0x%x cnt=%d fh12=0x%x\n",
3061 op->nfso_stateid.other[0], op->nfso_stateid.other[1],
3062 op->nfso_stateid.other[2], op->nfso_opencnt,
3064 LIST_FOREACH(lp, &op->nfso_lock, nfsl_list) {
3066 printf("lckown=0x%x 0x%x 0x%x 0x%x seqid=%d st=0x%x 0x%x 0x%x\n",
3067 lp->nfsl_owner[0], lp->nfsl_owner[1],
3068 lp->nfsl_owner[2], lp->nfsl_owner[3],
3070 lp->nfsl_stateid.other[0], lp->nfsl_stateid.other[1],
3071 lp->nfsl_stateid.other[2]);
3072 LIST_FOREACH(lop, &lp->nfsl_lock, nfslo_list) {
3075 printf("lck typ=%d fst=%ju end=%ju\n",
3076 lop->nfslo_type, (intmax_t)lop->nfslo_first,
3077 (intmax_t)lop->nfslo_end);
3079 printf("lck typ=%d fst=%qd end=%qd\n",
3080 lop->nfslo_type, lop->nfslo_first,
3088 LIST_FOREACH(owp, &clp->nfsc_owner, nfsow_list) {
3089 if (openowner && !LIST_EMPTY(&owp->nfsow_open))
3090 printf("owner=0x%x 0x%x 0x%x 0x%x seqid=%d\n",
3091 owp->nfsow_owner[0], owp->nfsow_owner[1],
3092 owp->nfsow_owner[2], owp->nfsow_owner[3],
3094 LIST_FOREACH(op, &owp->nfsow_open, nfso_list) {
3096 printf("open st=0x%x 0x%x 0x%x cnt=%d fh12=0x%x\n",
3097 op->nfso_stateid.other[0], op->nfso_stateid.other[1],
3098 op->nfso_stateid.other[2], op->nfso_opencnt,
3100 LIST_FOREACH(lp, &op->nfso_lock, nfsl_list) {
3102 printf("lckown=0x%x 0x%x 0x%x 0x%x seqid=%d st=0x%x 0x%x 0x%x\n",
3103 lp->nfsl_owner[0], lp->nfsl_owner[1],
3104 lp->nfsl_owner[2], lp->nfsl_owner[3],
3106 lp->nfsl_stateid.other[0], lp->nfsl_stateid.other[1],
3107 lp->nfsl_stateid.other[2]);
3108 LIST_FOREACH(lop, &lp->nfsl_lock, nfslo_list) {
3111 printf("lck typ=%d fst=%ju end=%ju\n",
3112 lop->nfslo_type, (intmax_t)lop->nfslo_first,
3113 (intmax_t)lop->nfslo_end);
3115 printf("lck typ=%d fst=%qd end=%qd\n",
3116 lop->nfslo_type, lop->nfslo_first,
3127 * Check for duplicate open owners and opens.
3128 * (Only used as a diagnostic aid.)
3131 nfscl_dupopen(vnode_t vp, int dupopens)
3133 struct nfsclclient *clp;
3134 struct nfsclowner *owp, *owp2;
3135 struct nfsclopen *op, *op2;
3138 clp = VFSTONFS(vp->v_mount)->nm_clp;
3140 printf("nfscl dupopen NULL clp\n");
3143 nfhp = VTONFS(vp)->n_fhp;
3147 * First, search for duplicate owners.
3148 * These should never happen!
3150 LIST_FOREACH(owp2, &clp->nfsc_owner, nfsow_list) {
3151 LIST_FOREACH(owp, &clp->nfsc_owner, nfsow_list) {
3153 !NFSBCMP(owp->nfsow_owner, owp2->nfsow_owner,
3154 NFSV4CL_LOCKNAMELEN)) {
3156 printf("DUP OWNER\n");
3157 nfscl_dumpstate(VFSTONFS(vp->v_mount), 1, 1, 0, 0);
3164 * Now, search for duplicate stateids.
3165 * These shouldn't happen, either.
3167 LIST_FOREACH(owp2, &clp->nfsc_owner, nfsow_list) {
3168 LIST_FOREACH(op2, &owp2->nfsow_open, nfso_list) {
3169 LIST_FOREACH(owp, &clp->nfsc_owner, nfsow_list) {
3170 LIST_FOREACH(op, &owp->nfsow_open, nfso_list) {
3172 (op->nfso_stateid.other[0] != 0 ||
3173 op->nfso_stateid.other[1] != 0 ||
3174 op->nfso_stateid.other[2] != 0) &&
3175 op->nfso_stateid.other[0] == op2->nfso_stateid.other[0] &&
3176 op->nfso_stateid.other[1] == op2->nfso_stateid.other[1] &&
3177 op->nfso_stateid.other[2] == op2->nfso_stateid.other[2]) {
3179 printf("DUP STATEID\n");
3180 nfscl_dumpstate(VFSTONFS(vp->v_mount), 1, 1, 0, 0);
3189 * Now search for duplicate opens.
3190 * Duplicate opens for the same owner
3191 * should never occur. Other duplicates are
3192 * possible and are checked for if "dupopens"
3195 LIST_FOREACH(owp2, &clp->nfsc_owner, nfsow_list) {
3196 LIST_FOREACH(op2, &owp2->nfsow_open, nfso_list) {
3197 if (nfhp->nfh_len == op2->nfso_fhlen &&
3198 !NFSBCMP(nfhp->nfh_fh, op2->nfso_fh, nfhp->nfh_len)) {
3199 LIST_FOREACH(owp, &clp->nfsc_owner, nfsow_list) {
3200 LIST_FOREACH(op, &owp->nfsow_open, nfso_list) {
3201 if (op != op2 && nfhp->nfh_len == op->nfso_fhlen &&
3202 !NFSBCMP(nfhp->nfh_fh, op->nfso_fh, nfhp->nfh_len) &&
3203 (!NFSBCMP(op->nfso_own->nfsow_owner,
3204 op2->nfso_own->nfsow_owner, NFSV4CL_LOCKNAMELEN) ||
3206 if (!NFSBCMP(op->nfso_own->nfsow_owner,
3207 op2->nfso_own->nfsow_owner, NFSV4CL_LOCKNAMELEN)) {
3209 printf("BADDUP OPEN\n");
3212 printf("DUP OPEN\n");
3214 nfscl_dumpstate(VFSTONFS(vp->v_mount), 1, 1, 0,
3227 * During close, find an open that needs to be dereferenced and
3228 * dereference it. If there are no more opens for this file,
3229 * log a message to that effect.
3230 * Opens aren't actually Close'd until VOP_INACTIVE() is performed
3231 * on the file's vnode.
3232 * This is the safe way, since it is difficult to identify
3233 * which open the close is for and I/O can be performed after the
3234 * close(2) system call when a file is mmap'd.
3235 * If it returns 0 for success, there will be a referenced
3236 * clp returned via clpp.
3239 nfscl_getclose(vnode_t vp, struct nfsclclient **clpp)
3241 struct nfsclclient *clp;
3242 struct nfsclowner *owp;
3243 struct nfsclopen *op;
3244 struct nfscldeleg *dp;
3248 error = nfscl_getcl(vp->v_mount, NULL, NULL, false, &clp);
3253 nfhp = VTONFS(vp)->n_fhp;
3257 * First, look for one under a delegation that was locally issued
3258 * and just decrement the opencnt for it. Since all my Opens against
3259 * the server are DENY_NONE, I don't see a problem with hanging
3260 * onto them. (It is much easier to use one of the extant Opens
3261 * that I already have on the server when a Delegation is recalled
3262 * than to do fresh Opens.) Someday, I might need to rethink this, but.
3264 dp = nfscl_finddeleg(clp, nfhp->nfh_fh, nfhp->nfh_len);
3266 LIST_FOREACH(owp, &dp->nfsdl_owner, nfsow_list) {
3267 op = LIST_FIRST(&owp->nfsow_open);
3270 * Since a delegation is for a file, there
3271 * should never be more than one open for
3274 if (LIST_NEXT(op, nfso_list) != NULL)
3275 panic("nfscdeleg opens");
3276 if (notdecr && op->nfso_opencnt > 0) {
3285 /* Now process the opens against the server. */
3286 LIST_FOREACH(op, NFSCLOPENHASH(clp, nfhp->nfh_fh, nfhp->nfh_len),
3288 if (op->nfso_fhlen == nfhp->nfh_len &&
3289 !NFSBCMP(op->nfso_fh, nfhp->nfh_fh,
3291 /* Found an open, decrement cnt if possible */
3292 if (notdecr && op->nfso_opencnt > 0) {
3297 * There are more opens, so just return.
3299 if (op->nfso_opencnt > 0) {
3307 printf("nfscl: never fnd open\n");
3312 nfscl_doclose(vnode_t vp, struct nfsclclient **clpp, NFSPROC_T *p)
3314 struct nfsclclient *clp;
3315 struct nfsclowner *owp, *nowp;
3316 struct nfsclopen *op;
3317 struct nfscldeleg *dp;
3319 struct nfsclrecalllayout *recallp;
3322 error = nfscl_getcl(vp->v_mount, NULL, NULL, false, &clp);
3327 nfhp = VTONFS(vp)->n_fhp;
3328 recallp = malloc(sizeof(*recallp), M_NFSLAYRECALL, M_WAITOK);
3331 * First get rid of the local Open structures, which should be no
3334 dp = nfscl_finddeleg(clp, nfhp->nfh_fh, nfhp->nfh_len);
3336 LIST_FOREACH_SAFE(owp, &dp->nfsdl_owner, nfsow_list, nowp) {
3337 op = LIST_FIRST(&owp->nfsow_open);
3339 KASSERT((op->nfso_opencnt == 0),
3340 ("nfscl: bad open cnt on deleg"));
3341 nfscl_freeopen(op, 1);
3343 nfscl_freeopenowner(owp, 1);
3347 /* Return any layouts marked return on close. */
3348 nfscl_retoncloselayout(vp, clp, nfhp->nfh_fh, nfhp->nfh_len, &recallp);
3350 /* Now process the opens against the server. */
3352 LIST_FOREACH(op, NFSCLOPENHASH(clp, nfhp->nfh_fh, nfhp->nfh_len),
3354 if (op->nfso_fhlen == nfhp->nfh_len &&
3355 !NFSBCMP(op->nfso_fh, nfhp->nfh_fh,
3357 /* Found an open, close it. */
3359 KASSERT((op->nfso_opencnt == 0),
3360 ("nfscl: bad open cnt on server (%d)",
3364 nfsrpc_doclose(VFSTONFS(vp->v_mount), op, p);
3371 * recallp has been set NULL by nfscl_retoncloselayout() if it was
3372 * used by the function, but calling free() with a NULL pointer is ok.
3374 free(recallp, M_NFSLAYRECALL);
3379 * Return all delegations on this client.
3380 * (Must be called with client sleep lock.)
3383 nfscl_delegreturnall(struct nfsclclient *clp, NFSPROC_T *p)
3385 struct nfscldeleg *dp, *ndp;
3388 cred = newnfs_getcred();
3389 TAILQ_FOREACH_SAFE(dp, &clp->nfsc_deleg, nfsdl_list, ndp) {
3390 nfscl_cleandeleg(dp);
3391 (void) nfscl_trydelegreturn(dp, cred, clp->nfsc_nmp, p);
3392 nfscl_freedeleg(&clp->nfsc_deleg, dp, true);
3398 * Return any delegation for this vp.
3401 nfscl_delegreturnvp(vnode_t vp, NFSPROC_T *p)
3403 struct nfsclclient *clp;
3404 struct nfscldeleg *dp;
3407 struct nfsmount *nmp;
3409 nmp = VFSTONFS(vp->v_mount);
3411 if ((nmp->nm_privflag & NFSMNTP_DELEGISSUED) == 0) {
3417 cred = newnfs_getcred();
3422 dp = nfscl_finddeleg(clp, np->n_fhp->nfh_fh,
3423 np->n_fhp->nfh_len);
3425 nfscl_cleandeleg(dp);
3426 nfscl_freedeleg(&clp->nfsc_deleg, dp, false);
3428 newnfs_copycred(&dp->nfsdl_cred, cred);
3429 nfscl_trydelegreturn(dp, cred, clp->nfsc_nmp, p);
3430 free(dp, M_NFSCLDELEG);
3437 * Do a callback RPC.
3440 nfscl_docb(struct nfsrv_descript *nd, NFSPROC_T *p)
3442 int clist, gotseq_ok, i, j, k, op, rcalls;
3444 struct nfsclclient *clp;
3445 struct nfscldeleg *dp = NULL;
3446 int numops, taglen = -1, error = 0, trunc __unused;
3447 u_int32_t minorvers = 0, retops = 0, *retopsp = NULL, *repp, cbident;
3448 u_char tag[NFSV4_SMALLSTR + 1], *tagstr;
3454 nfsattrbit_t attrbits, rattrbits;
3455 nfsv4stateid_t stateid;
3456 uint32_t seqid, slotid = 0, highslot, cachethis __unused;
3457 uint8_t sessionid[NFSX_V4SESSIONID];
3459 struct nfscllayout *lyp;
3460 uint64_t filesid[2], len, off;
3461 int changed, gotone, laytype, recalltype;
3463 struct nfsclrecalllayout *recallp = NULL;
3464 struct nfsclsession *tsep;
3468 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
3469 taglen = fxdr_unsigned(int, *tl);
3474 if (taglen <= NFSV4_SMALLSTR)
3477 tagstr = malloc(taglen + 1, M_TEMP, M_WAITOK);
3478 error = nfsrv_mtostr(nd, tagstr, taglen);
3480 if (taglen > NFSV4_SMALLSTR)
3481 free(tagstr, M_TEMP);
3485 (void) nfsm_strtom(nd, tag, taglen);
3486 if (taglen > NFSV4_SMALLSTR) {
3487 free(tagstr, M_TEMP);
3489 NFSM_BUILD(retopsp, u_int32_t *, NFSX_UNSIGNED);
3490 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
3491 minorvers = fxdr_unsigned(u_int32_t, *tl++);
3492 if (minorvers != NFSV4_MINORVERSION &&
3493 minorvers != NFSV41_MINORVERSION &&
3494 minorvers != NFSV42_MINORVERSION)
3495 nd->nd_repstat = NFSERR_MINORVERMISMATCH;
3496 cbident = fxdr_unsigned(u_int32_t, *tl++);
3500 numops = fxdr_unsigned(int, *tl);
3502 * Loop around doing the sub ops.
3504 for (i = 0; i < numops; i++) {
3505 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
3506 NFSM_BUILD(repp, u_int32_t *, 2 * NFSX_UNSIGNED);
3508 op = fxdr_unsigned(int, *tl);
3509 if (op < NFSV4OP_CBGETATTR ||
3510 (op > NFSV4OP_CBRECALL && minorvers == NFSV4_MINORVERSION) ||
3511 (op > NFSV4OP_CBNOTIFYDEVID &&
3512 minorvers == NFSV41_MINORVERSION) ||
3513 (op > NFSV4OP_CBOFFLOAD &&
3514 minorvers == NFSV42_MINORVERSION)) {
3515 nd->nd_repstat = NFSERR_OPILLEGAL;
3516 *repp = nfscl_errmap(nd, minorvers);
3520 nd->nd_procnum = op;
3521 if (op < NFSV42_CBNOPS)
3522 nfsstatsv1.cbrpccnt[nd->nd_procnum]++;
3524 case NFSV4OP_CBGETATTR:
3525 NFSCL_DEBUG(4, "cbgetattr\n");
3528 error = nfsm_getfh(nd, &nfhp);
3530 error = nfsrv_getattrbits(nd, &attrbits,
3532 if (error == 0 && i == 0 &&
3533 minorvers != NFSV4_MINORVERSION)
3534 error = NFSERR_OPNOTINSESS;
3536 mp = nfscl_getmnt(minorvers, sessionid, cbident,
3539 error = NFSERR_SERVERFAULT;
3542 error = nfscl_ngetreopen(mp, nfhp->nfh_fh,
3543 nfhp->nfh_len, p, &np);
3548 NFSZERO_ATTRBIT(&rattrbits);
3550 dp = nfscl_finddeleg(clp, nfhp->nfh_fh,
3553 if (NFSISSET_ATTRBIT(&attrbits,
3556 va.va_size = np->n_size;
3560 NFSSETBIT_ATTRBIT(&rattrbits,
3563 if (NFSISSET_ATTRBIT(&attrbits,
3564 NFSATTRBIT_CHANGE)) {
3568 (np->n_flag & NDELEGMOD))
3570 NFSSETBIT_ATTRBIT(&rattrbits,
3574 error = NFSERR_SERVERFAULT;
3582 free(nfhp, M_NFSFH);
3584 (void) nfsv4_fillattr(nd, NULL, NULL, NULL, &va,
3585 NULL, 0, &rattrbits, NULL, p, 0, 0, 0, 0,
3588 case NFSV4OP_CBRECALL:
3589 NFSCL_DEBUG(4, "cbrecall\n");
3590 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID +
3592 stateid.seqid = *tl++;
3593 NFSBCOPY((caddr_t)tl, (caddr_t)stateid.other,
3595 tl += (NFSX_STATEIDOTHER / NFSX_UNSIGNED);
3596 trunc = fxdr_unsigned(int, *tl);
3597 error = nfsm_getfh(nd, &nfhp);
3598 if (error == 0 && i == 0 &&
3599 minorvers != NFSV4_MINORVERSION)
3600 error = NFSERR_OPNOTINSESS;
3603 if (minorvers == NFSV4_MINORVERSION)
3604 clp = nfscl_getclnt(cbident);
3606 clp = nfscl_getclntsess(sessionid);
3608 dp = nfscl_finddeleg(clp, nfhp->nfh_fh,
3610 if (dp != NULL && (dp->nfsdl_flags &
3611 NFSCLDL_DELEGRET) == 0) {
3614 wakeup((caddr_t)clp);
3617 error = NFSERR_SERVERFAULT;
3622 free(nfhp, M_NFSFH);
3624 case NFSV4OP_CBLAYOUTRECALL:
3625 NFSCL_DEBUG(4, "cblayrec\n");
3627 NFSM_DISSECT(tl, uint32_t *, 4 * NFSX_UNSIGNED);
3628 laytype = fxdr_unsigned(int, *tl++);
3629 iomode = fxdr_unsigned(uint32_t, *tl++);
3630 if (newnfs_true == *tl++)
3634 recalltype = fxdr_unsigned(int, *tl);
3635 NFSCL_DEBUG(4, "layt=%d iom=%d ch=%d rectyp=%d\n",
3636 laytype, iomode, changed, recalltype);
3637 recallp = malloc(sizeof(*recallp), M_NFSLAYRECALL,
3639 if (laytype != NFSLAYOUT_NFSV4_1_FILES &&
3640 laytype != NFSLAYOUT_FLEXFILE)
3641 error = NFSERR_NOMATCHLAYOUT;
3642 else if (recalltype == NFSLAYOUTRETURN_FILE) {
3643 error = nfsm_getfh(nd, &nfhp);
3644 NFSCL_DEBUG(4, "retfile getfh=%d\n", error);
3647 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_HYPER +
3649 off = fxdr_hyper(tl); tl += 2;
3650 len = fxdr_hyper(tl); tl += 2;
3651 stateid.seqid = fxdr_unsigned(uint32_t, *tl++);
3652 NFSBCOPY(tl, stateid.other, NFSX_STATEIDOTHER);
3653 if (minorvers == NFSV4_MINORVERSION)
3654 error = NFSERR_NOTSUPP;
3656 error = NFSERR_OPNOTINSESS;
3657 NFSCL_DEBUG(4, "off=%ju len=%ju sq=%u err=%d\n",
3658 (uintmax_t)off, (uintmax_t)len,
3659 stateid.seqid, error);
3662 clp = nfscl_getclntsess(sessionid);
3663 NFSCL_DEBUG(4, "cbly clp=%p\n", clp);
3665 lyp = nfscl_findlayout(clp,
3668 NFSCL_DEBUG(4, "cblyp=%p\n",
3673 NFSLY_FLEXFILE)) != 0 &&
3674 !NFSBCMP(stateid.other,
3675 lyp->nfsly_stateid.other,
3676 NFSX_STATEIDOTHER)) {
3686 lyp->nfsly_stateid.seqid)
3687 lyp->nfsly_stateid.seqid =
3695 lyp->nfsly_stateid.seqid);
3698 NFSERR_NOMATCHLAYOUT;
3700 error = NFSERR_NOMATCHLAYOUT;
3703 free(nfhp, M_NFSFH);
3704 } else if (recalltype == NFSLAYOUTRETURN_FSID) {
3705 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_HYPER);
3706 filesid[0] = fxdr_hyper(tl); tl += 2;
3707 filesid[1] = fxdr_hyper(tl); tl += 2;
3710 clp = nfscl_getclntsess(sessionid);
3712 TAILQ_FOREACH(lyp, &clp->nfsc_layout,
3714 if (lyp->nfsly_filesid[0] ==
3716 lyp->nfsly_filesid[1] ==
3723 lyp->nfsly_stateid.seqid,
3733 error = NFSERR_NOMATCHLAYOUT;
3735 error = NFSERR_NOMATCHLAYOUT;
3737 } else if (recalltype == NFSLAYOUTRETURN_ALL) {
3740 clp = nfscl_getclntsess(sessionid);
3742 TAILQ_FOREACH(lyp, &clp->nfsc_layout,
3744 error = nfscl_layoutrecall(
3745 recalltype, lyp, iomode, 0,
3747 lyp->nfsly_stateid.seqid,
3748 0, 0, NULL, recallp);
3755 error = NFSERR_NOMATCHLAYOUT;
3757 error = NFSERR_NOMATCHLAYOUT;
3760 error = NFSERR_NOMATCHLAYOUT;
3761 if (recallp != NULL) {
3762 free(recallp, M_NFSLAYRECALL);
3766 case NFSV4OP_CBSEQUENCE:
3767 NFSM_DISSECT(tl, uint32_t *, NFSX_V4SESSIONID +
3769 bcopy(tl, sessionid, NFSX_V4SESSIONID);
3770 tl += NFSX_V4SESSIONID / NFSX_UNSIGNED;
3771 seqid = fxdr_unsigned(uint32_t, *tl++);
3772 slotid = fxdr_unsigned(uint32_t, *tl++);
3773 highslot = fxdr_unsigned(uint32_t, *tl++);
3775 /* Throw away the referring call stuff. */
3776 clist = fxdr_unsigned(int, *tl);
3777 for (j = 0; j < clist; j++) {
3778 NFSM_DISSECT(tl, uint32_t *, NFSX_V4SESSIONID +
3780 tl += NFSX_V4SESSIONID / NFSX_UNSIGNED;
3781 rcalls = fxdr_unsigned(int, *tl);
3782 for (k = 0; k < rcalls; k++) {
3783 NFSM_DISSECT(tl, uint32_t *,
3789 clp = nfscl_getclntsess(sessionid);
3791 error = NFSERR_SERVERFAULT;
3793 error = NFSERR_SEQUENCEPOS;
3795 tsep = nfsmnt_mdssession(clp->nfsc_nmp);
3796 error = nfsv4_seqsession(seqid, slotid,
3797 highslot, tsep->nfsess_cbslots, &rep,
3798 tsep->nfsess_backslots);
3801 if (error == 0 || error == NFSERR_REPLYFROMCACHE) {
3805 * Handle a reply for a retried
3806 * callback. The reply will be
3807 * re-inserted in the session cache
3808 * by the nfsv4_seqsess_cacherep() call
3811 KASSERT(error == NFSERR_REPLYFROMCACHE,
3812 ("cbsequence: non-NULL rep"));
3813 NFSCL_DEBUG(4, "Got cbretry\n");
3814 m_freem(nd->nd_mreq);
3819 NFSM_BUILD(tl, uint32_t *,
3820 NFSX_V4SESSIONID + 4 * NFSX_UNSIGNED);
3821 bcopy(sessionid, tl, NFSX_V4SESSIONID);
3822 tl += NFSX_V4SESSIONID / NFSX_UNSIGNED;
3823 *tl++ = txdr_unsigned(seqid);
3824 *tl++ = txdr_unsigned(slotid);
3825 *tl++ = txdr_unsigned(NFSV4_CBSLOTS - 1);
3826 *tl = txdr_unsigned(NFSV4_CBSLOTS - 1);
3830 if (i == 0 && minorvers != NFSV4_MINORVERSION)
3831 error = NFSERR_OPNOTINSESS;
3833 NFSCL_DEBUG(1, "unsupp callback %d\n", op);
3834 error = NFSERR_NOTSUPP;
3839 if (error == EBADRPC || error == NFSERR_BADXDR) {
3840 nd->nd_repstat = NFSERR_BADXDR;
3842 nd->nd_repstat = error;
3847 if (nd->nd_repstat) {
3848 *repp = nfscl_errmap(nd, minorvers);
3851 *repp = 0; /* NFS4_OK */
3854 if (recallp != NULL)
3855 free(recallp, M_NFSLAYRECALL);
3857 if (error == EBADRPC || error == NFSERR_BADXDR)
3858 nd->nd_repstat = NFSERR_BADXDR;
3860 printf("nfsv4 comperr1=%d\n", error);
3863 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
3867 *retopsp = txdr_unsigned(retops);
3869 *nd->nd_errp = nfscl_errmap(nd, minorvers);
3871 if (gotseq_ok != 0) {
3872 rep = m_copym(nd->nd_mreq, 0, M_COPYALL, M_WAITOK);
3874 clp = nfscl_getclntsess(sessionid);
3876 tsep = nfsmnt_mdssession(clp->nfsc_nmp);
3877 nfsv4_seqsess_cacherep(slotid, tsep->nfsess_cbslots,
3888 * Generate the next cbident value. Basically just increment a static value
3889 * and then check that it isn't already in the list, if it has wrapped around.
3892 nfscl_nextcbident(void)
3894 struct nfsclclient *clp;
3896 static u_int32_t nextcbident = 0;
3897 static int haswrapped = 0;
3900 if (nextcbident == 0)
3904 * Search the clientid list for one already using this cbident.
3909 LIST_FOREACH(clp, &nfsclhead, nfsc_list) {
3910 if (clp->nfsc_cbident == nextcbident) {
3920 return (nextcbident);
3924 * Get the mount point related to a given cbident or session and busy it.
3927 nfscl_getmnt(int minorvers, uint8_t *sessionid, u_int32_t cbident,
3928 struct nfsclclient **clpp)
3930 struct nfsclclient *clp;
3933 struct nfsclsession *tsep;
3937 LIST_FOREACH(clp, &nfsclhead, nfsc_list) {
3938 tsep = nfsmnt_mdssession(clp->nfsc_nmp);
3939 if (minorvers == NFSV4_MINORVERSION) {
3940 if (clp->nfsc_cbident == cbident)
3942 } else if (!NFSBCMP(tsep->nfsess_sessionid, sessionid,
3950 mp = clp->nfsc_nmp->nm_mountp;
3953 error = vfs_busy(mp, 0);
3962 * Get the clientid pointer related to a given cbident.
3964 static struct nfsclclient *
3965 nfscl_getclnt(u_int32_t cbident)
3967 struct nfsclclient *clp;
3969 LIST_FOREACH(clp, &nfsclhead, nfsc_list)
3970 if (clp->nfsc_cbident == cbident)
3976 * Get the clientid pointer related to a given sessionid.
3978 static struct nfsclclient *
3979 nfscl_getclntsess(uint8_t *sessionid)
3981 struct nfsclclient *clp;
3982 struct nfsclsession *tsep;
3984 LIST_FOREACH(clp, &nfsclhead, nfsc_list) {
3985 tsep = nfsmnt_mdssession(clp->nfsc_nmp);
3986 if (!NFSBCMP(tsep->nfsess_sessionid, sessionid,
3994 * Search for a lock conflict locally on the client. A conflict occurs if
3995 * - not same owner and overlapping byte range and at least one of them is
3996 * a write lock or this is an unlock.
3999 nfscl_localconflict(struct nfsclclient *clp, u_int8_t *fhp, int fhlen,
4000 struct nfscllock *nlop, u_int8_t *own, struct nfscldeleg *dp,
4001 struct nfscllock **lopp)
4003 struct nfsclopen *op;
4007 ret = nfscl_checkconflict(&dp->nfsdl_lock, nlop, own, lopp);
4011 LIST_FOREACH(op, NFSCLOPENHASH(clp, fhp, fhlen), nfso_hash) {
4012 if (op->nfso_fhlen == fhlen &&
4013 !NFSBCMP(op->nfso_fh, fhp, fhlen)) {
4014 ret = nfscl_checkconflict(&op->nfso_lock, nlop,
4024 nfscl_checkconflict(struct nfscllockownerhead *lhp, struct nfscllock *nlop,
4025 u_int8_t *own, struct nfscllock **lopp)
4027 struct nfscllockowner *lp;
4028 struct nfscllock *lop;
4030 LIST_FOREACH(lp, lhp, nfsl_list) {
4031 if (NFSBCMP(lp->nfsl_owner, own, NFSV4CL_LOCKNAMELEN)) {
4032 LIST_FOREACH(lop, &lp->nfsl_lock, nfslo_list) {
4033 if (lop->nfslo_first >= nlop->nfslo_end)
4035 if (lop->nfslo_end <= nlop->nfslo_first)
4037 if (lop->nfslo_type == F_WRLCK ||
4038 nlop->nfslo_type == F_WRLCK ||
4039 nlop->nfslo_type == F_UNLCK) {
4042 return (NFSERR_DENIED);
4051 * Check for a local conflicting lock.
4054 nfscl_lockt(vnode_t vp, struct nfsclclient *clp, u_int64_t off,
4055 u_int64_t len, struct flock *fl, NFSPROC_T *p, void *id, int flags)
4057 struct nfscllock *lop, nlck;
4058 struct nfscldeleg *dp;
4060 u_int8_t own[NFSV4CL_LOCKNAMELEN];
4063 nlck.nfslo_type = fl->l_type;
4064 nlck.nfslo_first = off;
4065 if (len == NFS64BITSSET) {
4066 nlck.nfslo_end = NFS64BITSSET;
4068 nlck.nfslo_end = off + len;
4069 if (nlck.nfslo_end <= nlck.nfslo_first)
4070 return (NFSERR_INVAL);
4073 nfscl_filllockowner(id, own, flags);
4075 dp = nfscl_finddeleg(clp, np->n_fhp->nfh_fh, np->n_fhp->nfh_len);
4076 error = nfscl_localconflict(clp, np->n_fhp->nfh_fh, np->n_fhp->nfh_len,
4077 &nlck, own, dp, &lop);
4079 fl->l_whence = SEEK_SET;
4080 fl->l_start = lop->nfslo_first;
4081 if (lop->nfslo_end == NFS64BITSSET)
4084 fl->l_len = lop->nfslo_end - lop->nfslo_first;
4085 fl->l_pid = (pid_t)0;
4086 fl->l_type = lop->nfslo_type;
4087 error = -1; /* no RPC required */
4088 } else if (dp != NULL && ((dp->nfsdl_flags & NFSCLDL_WRITE) ||
4089 fl->l_type == F_RDLCK)) {
4091 * The delegation ensures that there isn't a conflicting
4092 * lock on the server, so return -1 to indicate an RPC
4095 fl->l_type = F_UNLCK;
4103 * Handle Recall of a delegation.
4104 * The clp must be exclusive locked when this is called.
4107 nfscl_recalldeleg(struct nfsclclient *clp, struct nfsmount *nmp,
4108 struct nfscldeleg *dp, vnode_t vp, struct ucred *cred, NFSPROC_T *p,
4109 int called_from_renewthread, vnode_t *vpp)
4111 struct nfsclowner *owp, *lowp, *nowp;
4112 struct nfsclopen *op, *lop;
4113 struct nfscllockowner *lp;
4114 struct nfscllock *lckp;
4119 KASSERT(vpp != NULL, ("nfscl_recalldeleg: vpp NULL"));
4122 * First, get a vnode for the file. This is needed to do RPCs.
4124 ret = nfscl_ngetreopen(nmp->nm_mountp, dp->nfsdl_fh,
4125 dp->nfsdl_fhlen, p, &np);
4128 * File isn't open, so nothing to move over to the
4138 dp->nfsdl_flags &= ~NFSCLDL_MODTIMESET;
4141 * Ok, if it's a write delegation, flush data to the server, so
4142 * that close/open consistency is retained.
4146 if ((dp->nfsdl_flags & NFSCLDL_WRITE) && (np->n_flag & NMODIFIED)) {
4147 np->n_flag |= NDELEGRECALL;
4149 ret = ncl_flush(vp, MNT_WAIT, p, 1, called_from_renewthread);
4151 np->n_flag &= ~NDELEGRECALL;
4153 NFSINVALATTRCACHE(np);
4155 if (ret == EIO && called_from_renewthread != 0) {
4157 * If the flush failed with EIO for the renew thread,
4158 * return now, so that the dirty buffer will be flushed
4165 * Now, for each openowner with opens issued locally, move them
4166 * over to state against the server.
4168 LIST_FOREACH(lowp, &dp->nfsdl_owner, nfsow_list) {
4169 lop = LIST_FIRST(&lowp->nfsow_open);
4171 if (LIST_NEXT(lop, nfso_list) != NULL)
4172 panic("nfsdlg mult opens");
4174 * Look for the same openowner against the server.
4176 LIST_FOREACH(owp, &clp->nfsc_owner, nfsow_list) {
4177 if (!NFSBCMP(lowp->nfsow_owner,
4178 owp->nfsow_owner, NFSV4CL_LOCKNAMELEN)) {
4179 newnfs_copycred(&dp->nfsdl_cred, cred);
4180 ret = nfscl_moveopen(vp, clp, nmp, lop,
4182 if (ret == NFSERR_STALECLIENTID ||
4183 ret == NFSERR_STALEDONTRECOVER ||
4184 ret == NFSERR_BADSESSION)
4187 nfscl_freeopen(lop, 1);
4196 * If no openowner found, create one and get an open
4201 sizeof (struct nfsclowner), M_NFSCLOWNER,
4203 nfscl_newopen(clp, NULL, &owp, &nowp, &op,
4204 NULL, lowp->nfsow_owner, dp->nfsdl_fh,
4205 dp->nfsdl_fhlen, NULL, NULL);
4206 newnfs_copycred(&dp->nfsdl_cred, cred);
4207 ret = nfscl_moveopen(vp, clp, nmp, lop,
4210 nfscl_freeopenowner(owp, 0);
4211 if (ret == NFSERR_STALECLIENTID ||
4212 ret == NFSERR_STALEDONTRECOVER ||
4213 ret == NFSERR_BADSESSION)
4216 nfscl_freeopen(lop, 1);
4226 * Now, get byte range locks for any locks done locally.
4228 LIST_FOREACH(lp, &dp->nfsdl_lock, nfsl_list) {
4229 LIST_FOREACH(lckp, &lp->nfsl_lock, nfslo_list) {
4230 newnfs_copycred(&dp->nfsdl_cred, cred);
4231 ret = nfscl_relock(vp, clp, nmp, lp, lckp, cred, p);
4232 if (ret == NFSERR_STALESTATEID ||
4233 ret == NFSERR_STALEDONTRECOVER ||
4234 ret == NFSERR_STALECLIENTID ||
4235 ret == NFSERR_BADSESSION)
4245 * Move a locally issued open over to an owner on the state list.
4246 * SIDE EFFECT: If it needs to sleep (do an rpc), it unlocks clstate and
4247 * returns with it unlocked.
4250 nfscl_moveopen(vnode_t vp, struct nfsclclient *clp, struct nfsmount *nmp,
4251 struct nfsclopen *lop, struct nfsclowner *owp, struct nfscldeleg *dp,
4252 struct ucred *cred, NFSPROC_T *p)
4254 struct nfsclopen *op, *nop;
4255 struct nfscldeleg *ndp;
4257 int error = 0, newone;
4260 * First, look for an appropriate open, If found, just increment the
4263 LIST_FOREACH(op, &owp->nfsow_open, nfso_list) {
4264 if ((op->nfso_mode & lop->nfso_mode) == lop->nfso_mode &&
4265 op->nfso_fhlen == lop->nfso_fhlen &&
4266 !NFSBCMP(op->nfso_fh, lop->nfso_fh, op->nfso_fhlen)) {
4267 op->nfso_opencnt += lop->nfso_opencnt;
4268 nfscl_freeopen(lop, 1);
4273 /* No appropriate open, so we have to do one against the server. */
4275 nop = malloc(sizeof (struct nfsclopen) +
4276 lop->nfso_fhlen - 1, M_NFSCLOPEN, M_WAITOK);
4277 nop->nfso_hash.le_prev = NULL;
4279 nfscl_newopen(clp, NULL, &owp, NULL, &op, &nop, owp->nfsow_owner,
4280 lop->nfso_fh, lop->nfso_fhlen, cred, &newone);
4282 error = nfscl_tryopen(nmp, vp, np->n_v4->n4_data, np->n_v4->n4_fhlen,
4283 lop->nfso_fh, lop->nfso_fhlen, lop->nfso_mode, op,
4284 NFS4NODENAME(np->n_v4), np->n_v4->n4_namelen, &ndp, 0, 0, cred, p);
4287 nfscl_freeopen(op, 0);
4289 op->nfso_mode |= lop->nfso_mode;
4290 op->nfso_opencnt += lop->nfso_opencnt;
4291 nfscl_freeopen(lop, 1);
4294 free(nop, M_NFSCLOPEN);
4297 * What should I do with the returned delegation, since the
4298 * delegation is being recalled? For now, just printf and
4301 printf("Moveopen returned deleg\n");
4302 free(ndp, M_NFSCLDELEG);
4308 * Recall all delegations on this client.
4311 nfscl_totalrecall(struct nfsclclient *clp)
4313 struct nfscldeleg *dp;
4315 TAILQ_FOREACH(dp, &clp->nfsc_deleg, nfsdl_list) {
4316 if ((dp->nfsdl_flags & NFSCLDL_DELEGRET) == 0)
4317 dp->nfsdl_flags |= NFSCLDL_RECALL;
4322 * Relock byte ranges. Called for delegation recall and state expiry.
4325 nfscl_relock(vnode_t vp, struct nfsclclient *clp, struct nfsmount *nmp,
4326 struct nfscllockowner *lp, struct nfscllock *lop, struct ucred *cred,
4329 struct nfscllockowner *nlp;
4333 int error, newone, donelocally;
4335 if (NFSHASNFSV4N(nmp) && NFSHASONEOPENOWN(nmp)) {
4338 np->n_flag |= NMIGHTBELOCKED;
4342 off = lop->nfslo_first;
4343 len = lop->nfslo_end - lop->nfslo_first;
4344 error = nfscl_getbytelock(vp, off, len, lop->nfslo_type, cred, p,
4345 clp, 1, NULL, lp->nfsl_lockflags, lp->nfsl_owner,
4346 lp->nfsl_openowner, &nlp, &newone, &donelocally);
4347 if (error || donelocally)
4349 nfhp = VTONFS(vp)->n_fhp;
4350 error = nfscl_trylock(nmp, vp, nfhp->nfh_fh,
4351 nfhp->nfh_len, nlp, newone, 0, off,
4352 len, lop->nfslo_type, cred, p);
4354 nfscl_freelockowner(nlp, 0);
4359 * Called to re-open a file. Basically get a vnode for the file handle
4360 * and then call nfsrpc_openrpc() to do the rest.
4363 nfsrpc_reopen(struct nfsmount *nmp, u_int8_t *fhp, int fhlen,
4364 u_int32_t mode, struct nfsclopen *op, struct nfscldeleg **dpp,
4365 struct ucred *cred, NFSPROC_T *p)
4371 error = nfscl_ngetreopen(nmp->nm_mountp, fhp, fhlen, p, &np);
4375 if (np->n_v4 != NULL) {
4376 error = nfscl_tryopen(nmp, vp, np->n_v4->n4_data,
4377 np->n_v4->n4_fhlen, fhp, fhlen, mode, op,
4378 NFS4NODENAME(np->n_v4), np->n_v4->n4_namelen, dpp, 0, 0,
4388 * Try an open against the server. Just call nfsrpc_openrpc(), retrying while
4389 * NFSERR_DELAY. Also, try system credentials, if the passed in credentials
4393 nfscl_tryopen(struct nfsmount *nmp, vnode_t vp, u_int8_t *fhp, int fhlen,
4394 u_int8_t *newfhp, int newfhlen, u_int32_t mode, struct nfsclopen *op,
4395 u_int8_t *name, int namelen, struct nfscldeleg **ndpp,
4396 int reclaim, u_int32_t delegtype, struct ucred *cred, NFSPROC_T *p)
4401 error = nfsrpc_openrpc(nmp, vp, fhp, fhlen, newfhp, newfhlen,
4402 mode, op, name, namelen, ndpp, reclaim, delegtype, cred, p,
4404 if (error == NFSERR_DELAY)
4405 (void) nfs_catnap(PZERO, error, "nfstryop");
4406 } while (error == NFSERR_DELAY);
4407 if (error == EAUTH || error == EACCES) {
4408 /* Try again using system credentials */
4409 newnfs_setroot(cred);
4411 error = nfsrpc_openrpc(nmp, vp, fhp, fhlen, newfhp,
4412 newfhlen, mode, op, name, namelen, ndpp, reclaim,
4413 delegtype, cred, p, 1, 0);
4414 if (error == NFSERR_DELAY)
4415 (void) nfs_catnap(PZERO, error, "nfstryop");
4416 } while (error == NFSERR_DELAY);
4422 * Try a byte range lock. Just loop on nfsrpc_lock() while it returns
4423 * NFSERR_DELAY. Also, retry with system credentials, if the provided
4427 nfscl_trylock(struct nfsmount *nmp, vnode_t vp, u_int8_t *fhp,
4428 int fhlen, struct nfscllockowner *nlp, int newone, int reclaim,
4429 u_int64_t off, u_int64_t len, short type, struct ucred *cred, NFSPROC_T *p)
4431 struct nfsrv_descript nfsd, *nd = &nfsd;
4435 error = nfsrpc_lock(nd, nmp, vp, fhp, fhlen, nlp, newone,
4436 reclaim, off, len, type, cred, p, 0);
4437 if (!error && nd->nd_repstat == NFSERR_DELAY)
4438 (void) nfs_catnap(PZERO, (int)nd->nd_repstat,
4440 } while (!error && nd->nd_repstat == NFSERR_DELAY);
4442 error = nd->nd_repstat;
4443 if (error == EAUTH || error == EACCES) {
4444 /* Try again using root credentials */
4445 newnfs_setroot(cred);
4447 error = nfsrpc_lock(nd, nmp, vp, fhp, fhlen, nlp,
4448 newone, reclaim, off, len, type, cred, p, 1);
4449 if (!error && nd->nd_repstat == NFSERR_DELAY)
4450 (void) nfs_catnap(PZERO, (int)nd->nd_repstat,
4452 } while (!error && nd->nd_repstat == NFSERR_DELAY);
4454 error = nd->nd_repstat;
4460 * Try a delegreturn against the server. Just call nfsrpc_delegreturn(),
4461 * retrying while NFSERR_DELAY. Also, try system credentials, if the passed in
4465 nfscl_trydelegreturn(struct nfscldeleg *dp, struct ucred *cred,
4466 struct nfsmount *nmp, NFSPROC_T *p)
4471 error = nfsrpc_delegreturn(dp, cred, nmp, p, 0);
4472 if (error == NFSERR_DELAY)
4473 (void) nfs_catnap(PZERO, error, "nfstrydp");
4474 } while (error == NFSERR_DELAY);
4475 if (error == EAUTH || error == EACCES) {
4476 /* Try again using system credentials */
4477 newnfs_setroot(cred);
4479 error = nfsrpc_delegreturn(dp, cred, nmp, p, 1);
4480 if (error == NFSERR_DELAY)
4481 (void) nfs_catnap(PZERO, error, "nfstrydp");
4482 } while (error == NFSERR_DELAY);
4488 * Try a close against the server. Just call nfsrpc_closerpc(),
4489 * retrying while NFSERR_DELAY. Also, try system credentials, if the passed in
4493 nfscl_tryclose(struct nfsclopen *op, struct ucred *cred,
4494 struct nfsmount *nmp, NFSPROC_T *p)
4496 struct nfsrv_descript nfsd, *nd = &nfsd;
4500 error = nfsrpc_closerpc(nd, nmp, op, cred, p, 0);
4501 if (error == NFSERR_DELAY)
4502 (void) nfs_catnap(PZERO, error, "nfstrycl");
4503 } while (error == NFSERR_DELAY);
4504 if (error == EAUTH || error == EACCES) {
4505 /* Try again using system credentials */
4506 newnfs_setroot(cred);
4508 error = nfsrpc_closerpc(nd, nmp, op, cred, p, 1);
4509 if (error == NFSERR_DELAY)
4510 (void) nfs_catnap(PZERO, error, "nfstrycl");
4511 } while (error == NFSERR_DELAY);
4517 * Decide if a delegation on a file permits close without flushing writes
4518 * to the server. This might be a big performance win in some environments.
4519 * (Not useful until the client does caching on local stable storage.)
4522 nfscl_mustflush(vnode_t vp)
4524 struct nfsclclient *clp;
4525 struct nfscldeleg *dp;
4527 struct nfsmount *nmp;
4530 nmp = VFSTONFS(vp->v_mount);
4531 if (!NFSHASNFSV4(nmp))
4534 clp = nfscl_findcl(nmp);
4539 dp = nfscl_finddeleg(clp, np->n_fhp->nfh_fh, np->n_fhp->nfh_len);
4540 if (dp != NULL && (dp->nfsdl_flags &
4541 (NFSCLDL_WRITE | NFSCLDL_RECALL | NFSCLDL_DELEGRET)) ==
4543 (dp->nfsdl_sizelimit >= np->n_size ||
4544 !NFSHASSTRICT3530(nmp))) {
4553 * See if a (write) delegation exists for this file.
4556 nfscl_nodeleg(vnode_t vp, int writedeleg)
4558 struct nfsclclient *clp;
4559 struct nfscldeleg *dp;
4561 struct nfsmount *nmp;
4564 nmp = VFSTONFS(vp->v_mount);
4565 if (!NFSHASNFSV4(nmp))
4568 if ((nmp->nm_privflag & NFSMNTP_DELEGISSUED) == 0) {
4574 clp = nfscl_findcl(nmp);
4579 dp = nfscl_finddeleg(clp, np->n_fhp->nfh_fh, np->n_fhp->nfh_len);
4581 (dp->nfsdl_flags & (NFSCLDL_RECALL | NFSCLDL_DELEGRET)) == 0 &&
4582 (writedeleg == 0 || (dp->nfsdl_flags & NFSCLDL_WRITE) ==
4592 * Look for an associated delegation that should be DelegReturned.
4595 nfscl_removedeleg(vnode_t vp, NFSPROC_T *p, nfsv4stateid_t *stp)
4597 struct nfsclclient *clp;
4598 struct nfscldeleg *dp;
4599 struct nfsclowner *owp;
4600 struct nfscllockowner *lp;
4601 struct nfsmount *nmp;
4604 int igotlock = 0, triedrecall = 0, needsrecall, retcnt = 0, islept;
4606 nmp = VFSTONFS(vp->v_mount);
4610 * Loop around waiting for:
4611 * - outstanding I/O operations on delegations to complete
4612 * - for a delegation on vp that has state, lock the client and
4614 * - return delegation with no state
4617 clp = nfscl_findcl(nmp);
4622 dp = nfscl_finddeleg(clp, np->n_fhp->nfh_fh,
4623 np->n_fhp->nfh_len);
4626 * Wait for outstanding I/O ops to be done.
4628 if (dp->nfsdl_rwlock.nfslock_usecnt > 0) {
4630 nfsv4_unlock(&clp->nfsc_lock, 0);
4633 dp->nfsdl_rwlock.nfslock_lock |= NFSV4LOCK_WANTED;
4634 (void) nfsmsleep(&dp->nfsdl_rwlock,
4635 NFSCLSTATEMUTEXPTR, PZERO, "nfscld", NULL);
4639 LIST_FOREACH(owp, &dp->nfsdl_owner, nfsow_list) {
4640 if (!LIST_EMPTY(&owp->nfsow_open)) {
4646 LIST_FOREACH(lp, &dp->nfsdl_lock, nfsl_list) {
4647 if (!LIST_EMPTY(&lp->nfsl_lock)) {
4653 if (needsrecall && !triedrecall) {
4654 dp->nfsdl_flags |= NFSCLDL_DELEGRET;
4657 igotlock = nfsv4_lock(&clp->nfsc_lock, 1,
4658 &islept, NFSCLSTATEMUTEXPTR, NULL);
4665 cred = newnfs_getcred();
4666 newnfs_copycred(&dp->nfsdl_cred, cred);
4667 nfscl_recalldeleg(clp, nmp, dp, vp, cred, p, 0, NULL);
4671 nfsv4_unlock(&clp->nfsc_lock, 0);
4675 *stp = dp->nfsdl_stateid;
4677 nfscl_cleandeleg(dp);
4678 nfscl_freedeleg(&clp->nfsc_deleg, dp, true);
4681 nfsv4_unlock(&clp->nfsc_lock, 0);
4688 * Look for associated delegation(s) that should be DelegReturned.
4691 nfscl_renamedeleg(vnode_t fvp, nfsv4stateid_t *fstp, int *gotfdp, vnode_t tvp,
4692 nfsv4stateid_t *tstp, int *gottdp, NFSPROC_T *p)
4694 struct nfsclclient *clp;
4695 struct nfscldeleg *dp;
4696 struct nfsclowner *owp;
4697 struct nfscllockowner *lp;
4698 struct nfsmount *nmp;
4701 int igotlock = 0, triedrecall = 0, needsrecall, retcnt = 0, islept;
4703 nmp = VFSTONFS(fvp->v_mount);
4708 * Loop around waiting for:
4709 * - outstanding I/O operations on delegations to complete
4710 * - for a delegation on fvp that has state, lock the client and
4712 * - return delegation(s) with no state.
4715 clp = nfscl_findcl(nmp);
4721 dp = nfscl_finddeleg(clp, np->n_fhp->nfh_fh,
4722 np->n_fhp->nfh_len);
4723 if (dp != NULL && *gotfdp == 0) {
4725 * Wait for outstanding I/O ops to be done.
4727 if (dp->nfsdl_rwlock.nfslock_usecnt > 0) {
4729 nfsv4_unlock(&clp->nfsc_lock, 0);
4732 dp->nfsdl_rwlock.nfslock_lock |= NFSV4LOCK_WANTED;
4733 (void) nfsmsleep(&dp->nfsdl_rwlock,
4734 NFSCLSTATEMUTEXPTR, PZERO, "nfscld", NULL);
4738 LIST_FOREACH(owp, &dp->nfsdl_owner, nfsow_list) {
4739 if (!LIST_EMPTY(&owp->nfsow_open)) {
4745 LIST_FOREACH(lp, &dp->nfsdl_lock, nfsl_list) {
4746 if (!LIST_EMPTY(&lp->nfsl_lock)) {
4752 if (needsrecall && !triedrecall) {
4753 dp->nfsdl_flags |= NFSCLDL_DELEGRET;
4756 igotlock = nfsv4_lock(&clp->nfsc_lock, 1,
4757 &islept, NFSCLSTATEMUTEXPTR, NULL);
4764 cred = newnfs_getcred();
4765 newnfs_copycred(&dp->nfsdl_cred, cred);
4766 nfscl_recalldeleg(clp, nmp, dp, fvp, cred, p, 0, NULL);
4770 nfsv4_unlock(&clp->nfsc_lock, 0);
4774 *fstp = dp->nfsdl_stateid;
4777 nfscl_cleandeleg(dp);
4778 nfscl_freedeleg(&clp->nfsc_deleg, dp, true);
4781 nfsv4_unlock(&clp->nfsc_lock, 0);
4786 dp = nfscl_finddeleg(clp, np->n_fhp->nfh_fh,
4787 np->n_fhp->nfh_len);
4788 if (dp != NULL && *gottdp == 0) {
4790 * Wait for outstanding I/O ops to be done.
4792 if (dp->nfsdl_rwlock.nfslock_usecnt > 0) {
4793 dp->nfsdl_rwlock.nfslock_lock |= NFSV4LOCK_WANTED;
4794 (void) nfsmsleep(&dp->nfsdl_rwlock,
4795 NFSCLSTATEMUTEXPTR, PZERO, "nfscld", NULL);
4798 LIST_FOREACH(owp, &dp->nfsdl_owner, nfsow_list) {
4799 if (!LIST_EMPTY(&owp->nfsow_open)) {
4804 LIST_FOREACH(lp, &dp->nfsdl_lock, nfsl_list) {
4805 if (!LIST_EMPTY(&lp->nfsl_lock)) {
4810 *tstp = dp->nfsdl_stateid;
4813 nfscl_cleandeleg(dp);
4814 nfscl_freedeleg(&clp->nfsc_deleg, dp, true);
4823 * Get a reference on the clientid associated with the mount point.
4824 * Return 1 if success, 0 otherwise.
4827 nfscl_getref(struct nfsmount *nmp)
4829 struct nfsclclient *clp;
4832 clp = nfscl_findcl(nmp);
4837 nfsv4_getref(&clp->nfsc_lock, NULL, NFSCLSTATEMUTEXPTR, NULL);
4843 * Release a reference on a clientid acquired with the above call.
4846 nfscl_relref(struct nfsmount *nmp)
4848 struct nfsclclient *clp;
4851 clp = nfscl_findcl(nmp);
4856 nfsv4_relref(&clp->nfsc_lock);
4861 * Save the size attribute in the delegation, since the nfsnode
4865 nfscl_reclaimnode(vnode_t vp)
4867 struct nfsclclient *clp;
4868 struct nfscldeleg *dp;
4869 struct nfsnode *np = VTONFS(vp);
4870 struct nfsmount *nmp;
4872 nmp = VFSTONFS(vp->v_mount);
4873 if (!NFSHASNFSV4(nmp))
4876 clp = nfscl_findcl(nmp);
4881 dp = nfscl_finddeleg(clp, np->n_fhp->nfh_fh, np->n_fhp->nfh_len);
4882 if (dp != NULL && (dp->nfsdl_flags & NFSCLDL_WRITE))
4883 dp->nfsdl_size = np->n_size;
4888 * Get the saved size attribute in the delegation, since it is a
4889 * newly allocated nfsnode.
4892 nfscl_newnode(vnode_t vp)
4894 struct nfsclclient *clp;
4895 struct nfscldeleg *dp;
4896 struct nfsnode *np = VTONFS(vp);
4897 struct nfsmount *nmp;
4899 nmp = VFSTONFS(vp->v_mount);
4900 if (!NFSHASNFSV4(nmp))
4903 clp = nfscl_findcl(nmp);
4908 dp = nfscl_finddeleg(clp, np->n_fhp->nfh_fh, np->n_fhp->nfh_len);
4909 if (dp != NULL && (dp->nfsdl_flags & NFSCLDL_WRITE))
4910 np->n_size = dp->nfsdl_size;
4915 * If there is a valid write delegation for this file, set the modtime
4916 * to the local clock time.
4919 nfscl_delegmodtime(vnode_t vp)
4921 struct nfsclclient *clp;
4922 struct nfscldeleg *dp;
4923 struct nfsnode *np = VTONFS(vp);
4924 struct nfsmount *nmp;
4926 nmp = VFSTONFS(vp->v_mount);
4927 if (!NFSHASNFSV4(nmp))
4930 if ((nmp->nm_privflag & NFSMNTP_DELEGISSUED) == 0) {
4936 clp = nfscl_findcl(nmp);
4941 dp = nfscl_finddeleg(clp, np->n_fhp->nfh_fh, np->n_fhp->nfh_len);
4942 if (dp != NULL && (dp->nfsdl_flags & NFSCLDL_WRITE)) {
4943 nanotime(&dp->nfsdl_modtime);
4944 dp->nfsdl_flags |= NFSCLDL_MODTIMESET;
4950 * If there is a valid write delegation for this file with a modtime set,
4951 * put that modtime in mtime.
4954 nfscl_deleggetmodtime(vnode_t vp, struct timespec *mtime)
4956 struct nfsclclient *clp;
4957 struct nfscldeleg *dp;
4958 struct nfsnode *np = VTONFS(vp);
4959 struct nfsmount *nmp;
4961 nmp = VFSTONFS(vp->v_mount);
4962 if (!NFSHASNFSV4(nmp))
4965 if ((nmp->nm_privflag & NFSMNTP_DELEGISSUED) == 0) {
4971 clp = nfscl_findcl(nmp);
4976 dp = nfscl_finddeleg(clp, np->n_fhp->nfh_fh, np->n_fhp->nfh_len);
4978 (dp->nfsdl_flags & (NFSCLDL_WRITE | NFSCLDL_MODTIMESET)) ==
4979 (NFSCLDL_WRITE | NFSCLDL_MODTIMESET))
4980 *mtime = dp->nfsdl_modtime;
4985 nfscl_errmap(struct nfsrv_descript *nd, u_int32_t minorvers)
4987 short *defaulterrp, *errp;
4989 if (!nd->nd_repstat)
4991 if (nd->nd_procnum == NFSPROC_NOOP)
4992 return (txdr_unsigned(nd->nd_repstat & 0xffff));
4993 if (nd->nd_repstat == EBADRPC)
4994 return (txdr_unsigned(NFSERR_BADXDR));
4995 if (nd->nd_repstat == NFSERR_MINORVERMISMATCH ||
4996 nd->nd_repstat == NFSERR_OPILLEGAL)
4997 return (txdr_unsigned(nd->nd_repstat));
4998 if (nd->nd_repstat >= NFSERR_BADIOMODE && nd->nd_repstat < 20000 &&
4999 minorvers > NFSV4_MINORVERSION) {
5000 /* NFSv4.n error. */
5001 return (txdr_unsigned(nd->nd_repstat));
5003 if (nd->nd_procnum < NFSV4OP_CBNOPS)
5004 errp = defaulterrp = nfscl_cberrmap[nd->nd_procnum];
5006 return (txdr_unsigned(nd->nd_repstat));
5008 if (*errp == (short)nd->nd_repstat)
5009 return (txdr_unsigned(nd->nd_repstat));
5010 return (txdr_unsigned(*defaulterrp));
5014 * Called to find/add a layout to a client.
5015 * This function returns the layout with a refcnt (shared lock) upon
5016 * success (returns 0) or with no lock/refcnt on the layout when an
5017 * error is returned.
5018 * If a layout is passed in via lypp, it is locked (exclusively locked).
5021 nfscl_layout(struct nfsmount *nmp, vnode_t vp, u_int8_t *fhp, int fhlen,
5022 nfsv4stateid_t *stateidp, int layouttype, int retonclose,
5023 struct nfsclflayouthead *fhlp, struct nfscllayout **lypp,
5024 struct ucred *cred, NFSPROC_T *p)
5026 struct nfsclclient *clp;
5027 struct nfscllayout *lyp, *tlyp;
5028 struct nfsclflayout *flp;
5029 struct nfsnode *np = VTONFS(vp);
5031 int layout_passed_in;
5033 mp = nmp->nm_mountp;
5034 layout_passed_in = 1;
5038 layout_passed_in = 0;
5039 tlyp = malloc(sizeof(*tlyp) + fhlen - 1, M_NFSLAYOUT,
5046 if (layout_passed_in != 0)
5047 nfsv4_unlock(&lyp->nfsly_lock, 0);
5050 free(tlyp, M_NFSLAYOUT);
5055 * Although no lyp was passed in, another thread might have
5056 * allocated one. If one is found, just increment it's ref
5057 * count and return it.
5059 lyp = nfscl_findlayout(clp, fhp, fhlen);
5063 lyp->nfsly_stateid.seqid = stateidp->seqid;
5064 lyp->nfsly_stateid.other[0] = stateidp->other[0];
5065 lyp->nfsly_stateid.other[1] = stateidp->other[1];
5066 lyp->nfsly_stateid.other[2] = stateidp->other[2];
5067 lyp->nfsly_lastbyte = 0;
5068 LIST_INIT(&lyp->nfsly_flayread);
5069 LIST_INIT(&lyp->nfsly_flayrw);
5070 LIST_INIT(&lyp->nfsly_recall);
5071 lyp->nfsly_filesid[0] = np->n_vattr.na_filesid[0];
5072 lyp->nfsly_filesid[1] = np->n_vattr.na_filesid[1];
5073 lyp->nfsly_clp = clp;
5074 if (layouttype == NFSLAYOUT_FLEXFILE)
5075 lyp->nfsly_flags = NFSLY_FLEXFILE;
5077 lyp->nfsly_flags = NFSLY_FILES;
5078 if (retonclose != 0)
5079 lyp->nfsly_flags |= NFSLY_RETONCLOSE;
5080 lyp->nfsly_fhlen = fhlen;
5081 NFSBCOPY(fhp, lyp->nfsly_fh, fhlen);
5082 TAILQ_INSERT_HEAD(&clp->nfsc_layout, lyp, nfsly_list);
5083 LIST_INSERT_HEAD(NFSCLLAYOUTHASH(clp, fhp, fhlen), lyp,
5085 lyp->nfsly_timestamp = NFSD_MONOSEC + 120;
5088 if (retonclose != 0)
5089 lyp->nfsly_flags |= NFSLY_RETONCLOSE;
5090 if (stateidp->seqid > lyp->nfsly_stateid.seqid)
5091 lyp->nfsly_stateid.seqid = stateidp->seqid;
5092 TAILQ_REMOVE(&clp->nfsc_layout, lyp, nfsly_list);
5093 TAILQ_INSERT_HEAD(&clp->nfsc_layout, lyp, nfsly_list);
5094 lyp->nfsly_timestamp = NFSD_MONOSEC + 120;
5096 nfsv4_getref(&lyp->nfsly_lock, NULL, NFSCLSTATEMUTEXPTR, mp);
5097 if (NFSCL_FORCEDISM(mp)) {
5100 free(tlyp, M_NFSLAYOUT);
5104 } else if (stateidp->seqid > lyp->nfsly_stateid.seqid)
5105 lyp->nfsly_stateid.seqid = stateidp->seqid;
5107 /* Merge the new list of File Layouts into the list. */
5108 flp = LIST_FIRST(fhlp);
5110 if (flp->nfsfl_iomode == NFSLAYOUTIOMODE_READ)
5111 nfscl_mergeflayouts(&lyp->nfsly_flayread, fhlp);
5113 nfscl_mergeflayouts(&lyp->nfsly_flayrw, fhlp);
5115 if (layout_passed_in != 0)
5116 nfsv4_unlock(&lyp->nfsly_lock, 1);
5119 free(tlyp, M_NFSLAYOUT);
5124 * Search for a layout by MDS file handle.
5125 * If one is found, it is returned with a refcnt (shared lock) iff
5126 * retflpp returned non-NULL and locked (exclusive locked) iff retflpp is
5129 struct nfscllayout *
5130 nfscl_getlayout(struct nfsclclient *clp, uint8_t *fhp, int fhlen,
5131 uint64_t off, struct nfsclflayout **retflpp, int *recalledp)
5133 struct nfscllayout *lyp;
5135 int error, igotlock;
5137 mp = clp->nfsc_nmp->nm_mountp;
5141 lyp = nfscl_findlayout(clp, fhp, fhlen);
5143 if ((lyp->nfsly_flags & NFSLY_RECALL) == 0) {
5144 TAILQ_REMOVE(&clp->nfsc_layout, lyp, nfsly_list);
5145 TAILQ_INSERT_HEAD(&clp->nfsc_layout, lyp, nfsly_list);
5146 lyp->nfsly_timestamp = NFSD_MONOSEC + 120;
5147 error = nfscl_findlayoutforio(lyp, off,
5148 NFSV4OPEN_ACCESSREAD, retflpp);
5150 nfsv4_getref(&lyp->nfsly_lock, NULL,
5151 NFSCLSTATEMUTEXPTR, mp);
5154 igotlock = nfsv4_lock(&lyp->nfsly_lock,
5155 1, NULL, NFSCLSTATEMUTEXPTR, mp);
5156 } while (igotlock == 0 && !NFSCL_FORCEDISM(mp));
5159 if (NFSCL_FORCEDISM(mp)) {
5173 * Search for a layout by MDS file handle. If one is found, mark in to be
5174 * recalled, if it already marked "return on close".
5177 nfscl_retoncloselayout(vnode_t vp, struct nfsclclient *clp, uint8_t *fhp,
5178 int fhlen, struct nfsclrecalllayout **recallpp)
5180 struct nfscllayout *lyp;
5183 if (vp->v_type != VREG || !NFSHASPNFS(VFSTONFS(vp->v_mount)) ||
5184 nfscl_enablecallb == 0 || nfs_numnfscbd == 0 ||
5185 (VTONFS(vp)->n_flag & NNOLAYOUT) != 0)
5187 lyp = nfscl_findlayout(clp, fhp, fhlen);
5188 if (lyp != NULL && (lyp->nfsly_flags & (NFSLY_RETONCLOSE |
5189 NFSLY_RECALL)) == NFSLY_RETONCLOSE) {
5191 if (!LIST_EMPTY(&lyp->nfsly_flayread))
5192 iomode |= NFSLAYOUTIOMODE_READ;
5193 if (!LIST_EMPTY(&lyp->nfsly_flayrw))
5194 iomode |= NFSLAYOUTIOMODE_RW;
5195 (void)nfscl_layoutrecall(NFSLAYOUTRETURN_FILE, lyp, iomode,
5196 0, UINT64_MAX, lyp->nfsly_stateid.seqid, 0, 0, NULL,
5198 NFSCL_DEBUG(4, "retoncls recall iomode=%d\n", iomode);
5204 * Mark the layout to be recalled and with an error.
5205 * Also, disable the dsp from further use.
5208 nfscl_dserr(uint32_t op, uint32_t stat, struct nfscldevinfo *dp,
5209 struct nfscllayout *lyp, struct nfsclds *dsp)
5211 struct nfsclrecalllayout *recallp;
5214 printf("DS being disabled, error=%d\n", stat);
5215 /* Set up the return of the layout. */
5216 recallp = malloc(sizeof(*recallp), M_NFSLAYRECALL, M_WAITOK);
5219 if ((lyp->nfsly_flags & NFSLY_RECALL) == 0) {
5220 if (!LIST_EMPTY(&lyp->nfsly_flayread))
5221 iomode |= NFSLAYOUTIOMODE_READ;
5222 if (!LIST_EMPTY(&lyp->nfsly_flayrw))
5223 iomode |= NFSLAYOUTIOMODE_RW;
5224 (void)nfscl_layoutrecall(NFSLAYOUTRETURN_FILE, lyp, iomode,
5225 0, UINT64_MAX, lyp->nfsly_stateid.seqid, stat, op,
5226 dp->nfsdi_deviceid, recallp);
5228 NFSCL_DEBUG(4, "nfscl_dserr recall iomode=%d\n", iomode);
5231 free(recallp, M_NFSLAYRECALL);
5234 /* And shut the TCP connection down. */
5235 nfscl_cancelreqs(dsp);
5239 * Cancel all RPCs for this "dsp" by closing the connection.
5240 * Also, mark the session as defunct.
5241 * If NFSCLDS_SAMECONN is set, the connection is shared with other DSs and
5242 * cannot be shut down.
5245 nfscl_cancelreqs(struct nfsclds *dsp)
5247 struct __rpc_client *cl;
5248 static int non_event;
5251 if ((dsp->nfsclds_flags & (NFSCLDS_CLOSED | NFSCLDS_SAMECONN)) == 0 &&
5252 dsp->nfsclds_sockp != NULL &&
5253 dsp->nfsclds_sockp->nr_client != NULL) {
5254 dsp->nfsclds_flags |= NFSCLDS_CLOSED;
5255 cl = dsp->nfsclds_sockp->nr_client;
5256 dsp->nfsclds_sess.nfsess_defunct = 1;
5260 * This 1sec sleep is done to reduce the number of reconnect
5261 * attempts made on the DS while it has failed.
5263 tsleep(&non_event, PVFS, "ndscls", hz);
5270 * Dereference a layout.
5273 nfscl_rellayout(struct nfscllayout *lyp, int exclocked)
5278 nfsv4_unlock(&lyp->nfsly_lock, 0);
5280 nfsv4_relref(&lyp->nfsly_lock);
5285 * Search for a devinfo by deviceid. If one is found, return it after
5286 * acquiring a reference count on it.
5288 struct nfscldevinfo *
5289 nfscl_getdevinfo(struct nfsclclient *clp, uint8_t *deviceid,
5290 struct nfscldevinfo *dip)
5295 dip = nfscl_finddevinfo(clp, deviceid);
5297 dip->nfsdi_refcnt++;
5303 * Dereference a devinfo structure.
5306 nfscl_reldevinfo_locked(struct nfscldevinfo *dip)
5309 dip->nfsdi_refcnt--;
5310 if (dip->nfsdi_refcnt == 0)
5311 wakeup(&dip->nfsdi_refcnt);
5315 * Dereference a devinfo structure.
5318 nfscl_reldevinfo(struct nfscldevinfo *dip)
5322 nfscl_reldevinfo_locked(dip);
5327 * Find a layout for this file handle. Return NULL upon failure.
5329 static struct nfscllayout *
5330 nfscl_findlayout(struct nfsclclient *clp, u_int8_t *fhp, int fhlen)
5332 struct nfscllayout *lyp;
5334 LIST_FOREACH(lyp, NFSCLLAYOUTHASH(clp, fhp, fhlen), nfsly_hash)
5335 if (lyp->nfsly_fhlen == fhlen &&
5336 !NFSBCMP(lyp->nfsly_fh, fhp, fhlen))
5342 * Find a devinfo for this deviceid. Return NULL upon failure.
5344 static struct nfscldevinfo *
5345 nfscl_finddevinfo(struct nfsclclient *clp, uint8_t *deviceid)
5347 struct nfscldevinfo *dip;
5349 LIST_FOREACH(dip, &clp->nfsc_devinfo, nfsdi_list)
5350 if (NFSBCMP(dip->nfsdi_deviceid, deviceid, NFSX_V4DEVICEID)
5357 * Merge the new file layout list into the main one, maintaining it in
5358 * increasing offset order.
5361 nfscl_mergeflayouts(struct nfsclflayouthead *fhlp,
5362 struct nfsclflayouthead *newfhlp)
5364 struct nfsclflayout *flp, *nflp, *prevflp, *tflp;
5366 flp = LIST_FIRST(fhlp);
5368 LIST_FOREACH_SAFE(nflp, newfhlp, nfsfl_list, tflp) {
5369 while (flp != NULL && flp->nfsfl_off < nflp->nfsfl_off) {
5371 flp = LIST_NEXT(flp, nfsfl_list);
5373 if (prevflp == NULL)
5374 LIST_INSERT_HEAD(fhlp, nflp, nfsfl_list);
5376 LIST_INSERT_AFTER(prevflp, nflp, nfsfl_list);
5382 * Add this nfscldevinfo to the client, if it doesn't already exist.
5383 * This function consumes the structure pointed at by dip, if not NULL.
5386 nfscl_adddevinfo(struct nfsmount *nmp, struct nfscldevinfo *dip, int ind,
5387 struct nfsclflayout *flp)
5389 struct nfsclclient *clp;
5390 struct nfscldevinfo *tdip;
5398 free(dip, M_NFSDEVINFO);
5401 if ((flp->nfsfl_flags & NFSFL_FILE) != 0)
5402 dev = flp->nfsfl_dev;
5404 dev = flp->nfsfl_ffm[ind].dev;
5405 tdip = nfscl_finddevinfo(clp, dev);
5407 tdip->nfsdi_layoutrefs++;
5408 if ((flp->nfsfl_flags & NFSFL_FILE) != 0)
5409 flp->nfsfl_devp = tdip;
5411 flp->nfsfl_ffm[ind].devp = tdip;
5412 nfscl_reldevinfo_locked(tdip);
5415 free(dip, M_NFSDEVINFO);
5419 LIST_INSERT_HEAD(&clp->nfsc_devinfo, dip, nfsdi_list);
5420 dip->nfsdi_layoutrefs = 1;
5421 if ((flp->nfsfl_flags & NFSFL_FILE) != 0)
5422 flp->nfsfl_devp = dip;
5424 flp->nfsfl_ffm[ind].devp = dip;
5433 * Free up a layout structure and associated file layout structure(s).
5436 nfscl_freelayout(struct nfscllayout *layp)
5438 struct nfsclflayout *flp, *nflp;
5439 struct nfsclrecalllayout *rp, *nrp;
5441 LIST_FOREACH_SAFE(flp, &layp->nfsly_flayread, nfsfl_list, nflp) {
5442 LIST_REMOVE(flp, nfsfl_list);
5443 nfscl_freeflayout(flp);
5445 LIST_FOREACH_SAFE(flp, &layp->nfsly_flayrw, nfsfl_list, nflp) {
5446 LIST_REMOVE(flp, nfsfl_list);
5447 nfscl_freeflayout(flp);
5449 LIST_FOREACH_SAFE(rp, &layp->nfsly_recall, nfsrecly_list, nrp) {
5450 LIST_REMOVE(rp, nfsrecly_list);
5451 free(rp, M_NFSLAYRECALL);
5454 free(layp, M_NFSLAYOUT);
5458 * Free up a file layout structure.
5461 nfscl_freeflayout(struct nfsclflayout *flp)
5465 if ((flp->nfsfl_flags & NFSFL_FILE) != 0) {
5466 for (i = 0; i < flp->nfsfl_fhcnt; i++)
5467 free(flp->nfsfl_fh[i], M_NFSFH);
5468 if (flp->nfsfl_devp != NULL)
5469 flp->nfsfl_devp->nfsdi_layoutrefs--;
5471 if ((flp->nfsfl_flags & NFSFL_FLEXFILE) != 0)
5472 for (i = 0; i < flp->nfsfl_mirrorcnt; i++) {
5473 for (j = 0; j < flp->nfsfl_ffm[i].fhcnt; j++)
5474 free(flp->nfsfl_ffm[i].fh[j], M_NFSFH);
5475 if (flp->nfsfl_ffm[i].devp != NULL)
5476 flp->nfsfl_ffm[i].devp->nfsdi_layoutrefs--;
5478 free(flp, M_NFSFLAYOUT);
5482 * Free up a file layout devinfo structure.
5485 nfscl_freedevinfo(struct nfscldevinfo *dip)
5488 free(dip, M_NFSDEVINFO);
5492 * Mark any layouts that match as recalled.
5495 nfscl_layoutrecall(int recalltype, struct nfscllayout *lyp, uint32_t iomode,
5496 uint64_t off, uint64_t len, uint32_t stateseqid, uint32_t stat, uint32_t op,
5497 char *devid, struct nfsclrecalllayout *recallp)
5499 struct nfsclrecalllayout *rp, *orp;
5501 recallp->nfsrecly_recalltype = recalltype;
5502 recallp->nfsrecly_iomode = iomode;
5503 recallp->nfsrecly_stateseqid = stateseqid;
5504 recallp->nfsrecly_off = off;
5505 recallp->nfsrecly_len = len;
5506 recallp->nfsrecly_stat = stat;
5507 recallp->nfsrecly_op = op;
5509 NFSBCOPY(devid, recallp->nfsrecly_devid, NFSX_V4DEVICEID);
5511 * Order the list as file returns first, followed by fsid and any
5512 * returns, both in increasing stateseqid order.
5513 * Note that the seqids wrap around, so 1 is after 0xffffffff.
5514 * (I'm not sure this is correct because I find RFC5661 confusing
5515 * on this, but hopefully it will work ok.)
5518 LIST_FOREACH(rp, &lyp->nfsly_recall, nfsrecly_list) {
5520 if ((recalltype == NFSLAYOUTRETURN_FILE &&
5521 (rp->nfsrecly_recalltype != NFSLAYOUTRETURN_FILE ||
5522 nfscl_seq(stateseqid, rp->nfsrecly_stateseqid) != 0)) ||
5523 (recalltype != NFSLAYOUTRETURN_FILE &&
5524 rp->nfsrecly_recalltype != NFSLAYOUTRETURN_FILE &&
5525 nfscl_seq(stateseqid, rp->nfsrecly_stateseqid) != 0)) {
5526 LIST_INSERT_BEFORE(rp, recallp, nfsrecly_list);
5531 * Put any error return on all the file returns that will
5534 if (rp->nfsrecly_recalltype == NFSLAYOUTRETURN_FILE &&
5535 stat != 0 && rp->nfsrecly_stat == 0) {
5536 rp->nfsrecly_stat = stat;
5537 rp->nfsrecly_op = op;
5539 NFSBCOPY(devid, rp->nfsrecly_devid,
5545 LIST_INSERT_HEAD(&lyp->nfsly_recall, recallp,
5548 LIST_INSERT_AFTER(orp, recallp, nfsrecly_list);
5550 lyp->nfsly_flags |= NFSLY_RECALL;
5551 wakeup(lyp->nfsly_clp);
5556 * Compare the two seqids for ordering. The trick is that the seqids can
5557 * wrap around from 0xffffffff->0, so check for the cases where one
5558 * has wrapped around.
5559 * Return 1 if seqid1 comes before seqid2, 0 otherwise.
5562 nfscl_seq(uint32_t seqid1, uint32_t seqid2)
5565 if (seqid2 > seqid1 && (seqid2 - seqid1) >= 0x7fffffff)
5566 /* seqid2 has wrapped around. */
5568 if (seqid1 > seqid2 && (seqid1 - seqid2) >= 0x7fffffff)
5569 /* seqid1 has wrapped around. */
5571 if (seqid1 <= seqid2)
5577 * Do a layout return for each of the recalls.
5580 nfscl_layoutreturn(struct nfsmount *nmp, struct nfscllayout *lyp,
5581 struct ucred *cred, NFSPROC_T *p)
5583 struct nfsclrecalllayout *rp;
5584 nfsv4stateid_t stateid;
5587 NFSBCOPY(lyp->nfsly_stateid.other, stateid.other, NFSX_STATEIDOTHER);
5588 stateid.seqid = lyp->nfsly_stateid.seqid;
5589 if ((lyp->nfsly_flags & NFSLY_FILES) != 0)
5590 layouttype = NFSLAYOUT_NFSV4_1_FILES;
5592 layouttype = NFSLAYOUT_FLEXFILE;
5593 LIST_FOREACH(rp, &lyp->nfsly_recall, nfsrecly_list) {
5594 (void)nfsrpc_layoutreturn(nmp, lyp->nfsly_fh,
5595 lyp->nfsly_fhlen, 0, layouttype,
5596 rp->nfsrecly_iomode, rp->nfsrecly_recalltype,
5597 rp->nfsrecly_off, rp->nfsrecly_len,
5598 &stateid, cred, p, rp->nfsrecly_stat, rp->nfsrecly_op,
5599 rp->nfsrecly_devid);
5604 * Do the layout commit for a file layout.
5607 nfscl_dolayoutcommit(struct nfsmount *nmp, struct nfscllayout *lyp,
5608 struct ucred *cred, NFSPROC_T *p)
5610 struct nfsclflayout *flp;
5612 int error, layouttype;
5614 if ((lyp->nfsly_flags & NFSLY_FILES) != 0)
5615 layouttype = NFSLAYOUT_NFSV4_1_FILES;
5617 layouttype = NFSLAYOUT_FLEXFILE;
5618 LIST_FOREACH(flp, &lyp->nfsly_flayrw, nfsfl_list) {
5619 if (layouttype == NFSLAYOUT_FLEXFILE &&
5620 (flp->nfsfl_fflags & NFSFLEXFLAG_NO_LAYOUTCOMMIT) != 0) {
5621 NFSCL_DEBUG(4, "Flex file: no layoutcommit\n");
5622 /* If not supported, don't bother doing it. */
5624 nmp->nm_state |= NFSSTA_NOLAYOUTCOMMIT;
5627 } else if (flp->nfsfl_off <= lyp->nfsly_lastbyte) {
5628 len = flp->nfsfl_end - flp->nfsfl_off;
5629 error = nfsrpc_layoutcommit(nmp, lyp->nfsly_fh,
5630 lyp->nfsly_fhlen, 0, flp->nfsfl_off, len,
5631 lyp->nfsly_lastbyte, &lyp->nfsly_stateid,
5632 layouttype, cred, p, NULL);
5633 NFSCL_DEBUG(4, "layoutcommit err=%d\n", error);
5634 if (error == NFSERR_NOTSUPP) {
5635 /* If not supported, don't bother doing it. */
5637 nmp->nm_state |= NFSSTA_NOLAYOUTCOMMIT;
5646 * Commit all layouts for a file (vnode).
5649 nfscl_layoutcommit(vnode_t vp, NFSPROC_T *p)
5651 struct nfsclclient *clp;
5652 struct nfscllayout *lyp;
5653 struct nfsnode *np = VTONFS(vp);
5655 struct nfsmount *nmp;
5659 if (NFSHASNOLAYOUTCOMMIT(nmp))
5667 lyp = nfscl_findlayout(clp, np->n_fhp->nfh_fh, np->n_fhp->nfh_len);
5672 nfsv4_getref(&lyp->nfsly_lock, NULL, NFSCLSTATEMUTEXPTR, mp);
5673 if (NFSCL_FORCEDISM(mp)) {
5678 if ((lyp->nfsly_flags & NFSLY_WRITTEN) != 0) {
5679 lyp->nfsly_flags &= ~NFSLY_WRITTEN;
5681 NFSCL_DEBUG(4, "do layoutcommit2\n");
5682 nfscl_dolayoutcommit(clp->nfsc_nmp, lyp, NFSPROCCRED(p), p);
5686 nfsv4_relref(&lyp->nfsly_lock);