2 * Copyright (c) 1989, 1993
3 * The Regents of the University of California. All rights reserved.
5 * This code is derived from software contributed to Berkeley by
6 * Rick Macklem at The University of Guelph.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 #include <sys/cdefs.h>
35 __FBSDID("$FreeBSD$");
38 #include "opt_inet6.h"
40 #include <sys/capsicum.h>
43 * generally, I don't like #includes inside .h files, but it seems to
44 * be the easiest way to handle the port.
48 #include <sys/sysctl.h>
49 #include <fs/nfs/nfsport.h>
50 #include <netinet/in_fib.h>
51 #include <netinet/if_ether.h>
52 #include <netinet6/ip6_var.h>
53 #include <net/if_types.h>
55 #include <fs/nfsclient/nfs_kdtrace.h>
58 dtrace_nfsclient_attrcache_flush_probe_func_t
59 dtrace_nfscl_attrcache_flush_done_probe;
60 uint32_t nfscl_attrcache_flush_done_id;
62 dtrace_nfsclient_attrcache_get_hit_probe_func_t
63 dtrace_nfscl_attrcache_get_hit_probe;
64 uint32_t nfscl_attrcache_get_hit_id;
66 dtrace_nfsclient_attrcache_get_miss_probe_func_t
67 dtrace_nfscl_attrcache_get_miss_probe;
68 uint32_t nfscl_attrcache_get_miss_id;
70 dtrace_nfsclient_attrcache_load_probe_func_t
71 dtrace_nfscl_attrcache_load_done_probe;
72 uint32_t nfscl_attrcache_load_done_id;
73 #endif /* !KDTRACE_HOOKS */
75 extern u_int32_t newnfs_true, newnfs_false, newnfs_xdrneg1;
76 extern struct vop_vector newnfs_vnodeops;
77 extern struct vop_vector newnfs_fifoops;
78 extern uma_zone_t newnfsnode_zone;
79 extern struct buf_ops buf_ops_newnfs;
80 extern int ncl_pbuf_freecnt;
81 extern short nfsv4_cbport;
82 extern int nfscl_enablecallb;
83 extern int nfs_numnfscbd;
84 extern int nfscl_inited;
85 struct mtx ncl_iod_mutex;
88 extern void (*ncl_call_invalcaches)(struct vnode *);
90 SYSCTL_DECL(_vfs_nfs);
91 static int ncl_fileid_maxwarnings = 10;
92 SYSCTL_INT(_vfs_nfs, OID_AUTO, fileid_maxwarnings, CTLFLAG_RWTUN,
93 &ncl_fileid_maxwarnings, 0,
94 "Limit fileid corruption warnings; 0 is off; -1 is unlimited");
95 static volatile int ncl_fileid_nwarnings;
97 static void nfscl_warn_fileid(struct nfsmount *, struct nfsvattr *,
101 * Comparison function for vfs_hash functions.
104 newnfs_vncmpf(struct vnode *vp, void *arg)
106 struct nfsfh *nfhp = (struct nfsfh *)arg;
107 struct nfsnode *np = VTONFS(vp);
109 if (np->n_fhp->nfh_len != nfhp->nfh_len ||
110 NFSBCMP(np->n_fhp->nfh_fh, nfhp->nfh_fh, nfhp->nfh_len))
116 * Look up a vnode/nfsnode by file handle.
117 * Callers must check for mount points!!
118 * In all cases, a pointer to a
119 * nfsnode structure is returned.
120 * This variant takes a "struct nfsfh *" as second argument and uses
121 * that structure up, either by hanging off the nfsnode or FREEing it.
124 nfscl_nget(struct mount *mntp, struct vnode *dvp, struct nfsfh *nfhp,
125 struct componentname *cnp, struct thread *td, struct nfsnode **npp,
126 void *stuff, int lkflags)
128 struct nfsnode *np, *dnp;
129 struct vnode *vp, *nvp;
130 struct nfsv4node *newd, *oldd;
133 struct nfsmount *nmp;
135 nmp = VFSTONFS(mntp);
139 hash = fnv_32_buf(nfhp->nfh_fh, nfhp->nfh_len, FNV1_32_INIT);
141 error = vfs_hash_get(mntp, hash, lkflags,
142 td, &nvp, newnfs_vncmpf, nfhp);
143 if (error == 0 && nvp != NULL) {
145 * I believe there is a slight chance that vgonel() could
146 * get called on this vnode between when NFSVOPLOCK() drops
147 * the VI_LOCK() and vget() acquires it again, so that it
148 * hasn't yet had v_usecount incremented. If this were to
149 * happen, the VI_DOOMED flag would be set, so check for
150 * that here. Since we now have the v_usecount incremented,
151 * we should be ok until we vrele() it, if the VI_DOOMED
152 * flag isn't set now.
155 if ((nvp->v_iflag & VI_DOOMED)) {
164 FREE((caddr_t)nfhp, M_NFSFH);
170 * For NFSv4, check to see if it is the same name and
171 * replace the name, if it is different.
174 if ((nmp->nm_flag & NFSMNT_NFSV4) && np->n_v4 != NULL &&
175 nvp->v_type == VREG &&
176 (np->n_v4->n4_namelen != cnp->cn_namelen ||
177 NFSBCMP(cnp->cn_nameptr, NFS4NODENAME(np->n_v4),
179 dnp->n_fhp->nfh_len != np->n_v4->n4_fhlen ||
180 NFSBCMP(dnp->n_fhp->nfh_fh, np->n_v4->n4_data,
181 dnp->n_fhp->nfh_len))) {
182 MALLOC(newd, struct nfsv4node *,
183 sizeof (struct nfsv4node) + dnp->n_fhp->nfh_len +
184 + cnp->cn_namelen - 1, M_NFSV4NODE, M_WAITOK);
186 if (newd != NULL && np->n_v4 != NULL && nvp->v_type == VREG
187 && (np->n_v4->n4_namelen != cnp->cn_namelen ||
188 NFSBCMP(cnp->cn_nameptr, NFS4NODENAME(np->n_v4),
190 dnp->n_fhp->nfh_len != np->n_v4->n4_fhlen ||
191 NFSBCMP(dnp->n_fhp->nfh_fh, np->n_v4->n4_data,
192 dnp->n_fhp->nfh_len))) {
196 np->n_v4->n4_fhlen = dnp->n_fhp->nfh_len;
197 np->n_v4->n4_namelen = cnp->cn_namelen;
198 NFSBCOPY(dnp->n_fhp->nfh_fh, np->n_v4->n4_data,
199 dnp->n_fhp->nfh_len);
200 NFSBCOPY(cnp->cn_nameptr, NFS4NODENAME(np->n_v4),
206 FREE((caddr_t)newd, M_NFSV4NODE);
208 FREE((caddr_t)oldd, M_NFSV4NODE);
210 FREE((caddr_t)nfhp, M_NFSFH);
213 np = uma_zalloc(newnfsnode_zone, M_WAITOK | M_ZERO);
215 error = getnewvnode(nfs_vnode_tag, mntp, &newnfs_vnodeops, &nvp);
217 uma_zfree(newnfsnode_zone, np);
218 FREE((caddr_t)nfhp, M_NFSFH);
222 KASSERT(vp->v_bufobj.bo_bsize != 0, ("nfscl_nget: bo_bsize == 0"));
223 vp->v_bufobj.bo_ops = &buf_ops_newnfs;
227 * Initialize the mutex even if the vnode is going to be a loser.
228 * This simplifies the logic in reclaim, which can then unconditionally
229 * destroy the mutex (in the case of the loser, or if hash_insert
230 * happened to return an error no special casing is needed).
232 mtx_init(&np->n_mtx, "NEWNFSnode lock", NULL, MTX_DEF | MTX_DUPOK);
233 lockinit(&np->n_excl, PVFS, "nfsupg", VLKTIMEOUT, LK_NOSHARE |
237 * Are we getting the root? If so, make sure the vnode flags
240 if ((nfhp->nfh_len == nmp->nm_fhsize) &&
241 !bcmp(nfhp->nfh_fh, nmp->nm_fh, nfhp->nfh_len)) {
242 if (vp->v_type == VNON)
244 vp->v_vflag |= VV_ROOT;
249 * For NFSv4, we have to attach the directory file handle and
250 * file name, so that Open Ops can be done later.
252 if (nmp->nm_flag & NFSMNT_NFSV4) {
253 MALLOC(np->n_v4, struct nfsv4node *, sizeof (struct nfsv4node)
254 + dnp->n_fhp->nfh_len + cnp->cn_namelen - 1, M_NFSV4NODE,
256 np->n_v4->n4_fhlen = dnp->n_fhp->nfh_len;
257 np->n_v4->n4_namelen = cnp->cn_namelen;
258 NFSBCOPY(dnp->n_fhp->nfh_fh, np->n_v4->n4_data,
259 dnp->n_fhp->nfh_len);
260 NFSBCOPY(cnp->cn_nameptr, NFS4NODENAME(np->n_v4),
267 * NFS supports recursive and shared locking.
269 lockmgr(vp->v_vnlock, LK_EXCLUSIVE | LK_NOWITNESS, NULL);
272 error = insmntque(vp, mntp);
275 mtx_destroy(&np->n_mtx);
276 lockdestroy(&np->n_excl);
277 FREE((caddr_t)nfhp, M_NFSFH);
278 if (np->n_v4 != NULL)
279 FREE((caddr_t)np->n_v4, M_NFSV4NODE);
280 uma_zfree(newnfsnode_zone, np);
283 error = vfs_hash_insert(vp, hash, lkflags,
284 td, &nvp, newnfs_vncmpf, nfhp);
289 /* vfs_hash_insert() vput()'s the losing vnode */
298 * Another variant of nfs_nget(). This one is only used by reopen. It
299 * takes almost the same args as nfs_nget(), but only succeeds if an entry
300 * exists in the cache. (Since files should already be "open" with a
301 * vnode ref cnt on the node when reopen calls this, it should always
303 * Also, don't get a vnode lock, since it may already be locked by some
304 * other process that is handling it. This is ok, since all other threads
305 * on the client are blocked by the nfsc_lock being exclusively held by the
306 * caller of this function.
309 nfscl_ngetreopen(struct mount *mntp, u_int8_t *fhp, int fhsize,
310 struct thread *td, struct nfsnode **npp)
318 /* For forced dismounts, just return error. */
319 if (NFSCL_FORCEDISM(mntp))
321 MALLOC(nfhp, struct nfsfh *, sizeof (struct nfsfh) + fhsize,
323 bcopy(fhp, &nfhp->nfh_fh[0], fhsize);
324 nfhp->nfh_len = fhsize;
326 hash = fnv_32_buf(fhp, fhsize, FNV1_32_INIT);
329 * First, try to get the vnode locked, but don't block for the lock.
331 error = vfs_hash_get(mntp, hash, (LK_EXCLUSIVE | LK_NOWAIT), td, &nvp,
332 newnfs_vncmpf, nfhp);
333 if (error == 0 && nvp != NULL) {
334 NFSVOPUNLOCK(nvp, 0);
335 } else if (error == EBUSY) {
337 * It is safe so long as a vflush() with
338 * FORCECLOSE has not been done. Since the Renew thread is
339 * stopped and the MNTK_UNMOUNTF flag is set before doing
340 * a vflush() with FORCECLOSE, we should be ok here.
342 if (NFSCL_FORCEDISM(mntp))
345 vfs_hash_ref(mntp, hash, td, &nvp, newnfs_vncmpf, nfhp);
348 } else if ((nvp->v_iflag & VI_DOOMED) != 0) {
367 nfscl_warn_fileid(struct nfsmount *nmp, struct nfsvattr *oldnap,
368 struct nfsvattr *newnap)
372 if (ncl_fileid_maxwarnings >= 0 &&
373 ncl_fileid_nwarnings >= ncl_fileid_maxwarnings)
376 if (ncl_fileid_maxwarnings >= 0) {
377 if (++ncl_fileid_nwarnings >= ncl_fileid_maxwarnings)
381 printf("newnfs: server '%s' error: fileid changed. "
382 "fsid %jx:%jx: expected fileid %#jx, got %#jx. "
383 "(BROKEN NFS SERVER OR MIDDLEWARE)\n",
384 nmp->nm_com.nmcom_hostname,
385 (uintmax_t)nmp->nm_fsid[0],
386 (uintmax_t)nmp->nm_fsid[1],
387 (uintmax_t)oldnap->na_fileid,
388 (uintmax_t)newnap->na_fileid);
391 printf("newnfs: Logged %d times about fileid corruption; "
392 "going quiet to avoid spamming logs excessively. (Limit "
393 "is: %d).\n", ncl_fileid_nwarnings,
394 ncl_fileid_maxwarnings);
398 * Load the attribute cache (that lives in the nfsnode entry) with
399 * the attributes of the second argument and
401 * copy the attributes to *vaper
402 * Similar to nfs_loadattrcache(), except the attributes are passed in
403 * instead of being parsed out of the mbuf list.
406 nfscl_loadattrcache(struct vnode **vpp, struct nfsvattr *nap, void *nvaper,
407 void *stuff, int writeattr, int dontshrink)
409 struct vnode *vp = *vpp;
410 struct vattr *vap, *nvap = &nap->na_vattr, *vaper = nvaper;
412 struct nfsmount *nmp;
413 struct timespec mtime_save;
415 int setnsize, error, force_fid_err;
422 * If v_type == VNON it is a new node, so fill in the v_type,
423 * n_mtime fields. Check to see if it represents a special
424 * device, and if so, check for a possible alias. Once the
425 * correct vnode has been obtained, fill in the rest of the
430 if (vp->v_type != nvap->va_type) {
431 vp->v_type = nvap->va_type;
432 if (vp->v_type == VFIFO)
433 vp->v_op = &newnfs_fifoops;
434 np->n_mtime = nvap->va_mtime;
436 nmp = VFSTONFS(vp->v_mount);
437 vap = &np->n_vattr.na_vattr;
438 mtime_save = vap->va_mtime;
440 np->n_vattr.na_filerev = nap->na_filerev;
441 np->n_vattr.na_size = nap->na_size;
442 np->n_vattr.na_mtime = nap->na_mtime;
443 np->n_vattr.na_ctime = nap->na_ctime;
444 np->n_vattr.na_fsid = nap->na_fsid;
445 np->n_vattr.na_mode = nap->na_mode;
448 KFAIL_POINT_ERROR(DEBUG_FP, nfscl_force_fileid_warning,
451 * BROKEN NFS SERVER OR MIDDLEWARE
453 * Certain NFS servers (certain old proprietary filers ca.
454 * 2006) or broken middleboxes (e.g. WAN accelerator products)
455 * will respond to GETATTR requests with results for a
458 * The WAN accelerator we've observed not only serves stale
459 * cache results for a given file, it also occasionally serves
460 * results for wholly different files. This causes surprising
461 * problems; for example the cached size attribute of a file
462 * may truncate down and then back up, resulting in zero
463 * regions in file contents read by applications. We observed
464 * this reliably with Clang and .c files during parallel build.
465 * A pcap revealed packet fragmentation and GETATTR RPC
466 * responses with wholly wrong fileids.
468 if ((np->n_vattr.na_fileid != 0 &&
469 np->n_vattr.na_fileid != nap->na_fileid) ||
471 nfscl_warn_fileid(nmp, &np->n_vattr, nap);
475 NFSBCOPY((caddr_t)nap, (caddr_t)&np->n_vattr,
476 sizeof (struct nfsvattr));
480 * For NFSv4, if the node's fsid is not equal to the mount point's
481 * fsid, return the low order 32bits of the node's fsid. This
482 * allows getcwd(3) to work. There is a chance that the fsid might
483 * be the same as a local fs, but since this is in an NFS mount
484 * point, I don't think that will cause any problems?
486 if (NFSHASNFSV4(nmp) && NFSHASHASSETFSID(nmp) &&
487 (nmp->nm_fsid[0] != np->n_vattr.na_filesid[0] ||
488 nmp->nm_fsid[1] != np->n_vattr.na_filesid[1])) {
490 * va_fsid needs to be set to some value derived from
491 * np->n_vattr.na_filesid that is not equal
492 * vp->v_mount->mnt_stat.f_fsid[0], so that it changes
493 * from the value used for the top level server volume
494 * in the mounted subtree.
497 if ((uint32_t)vap->va_fsid == np->n_vattr.na_filesid[0])
498 vap->va_fsid = hash32_buf(
499 np->n_vattr.na_filesid, 2 * sizeof(uint64_t), 0);
502 np->n_attrstamp = time_second;
503 if (vap->va_size != np->n_size) {
504 if (vap->va_type == VREG) {
505 if (dontshrink && vap->va_size < np->n_size) {
507 * We've been told not to shrink the file;
508 * zero np->n_attrstamp to indicate that
509 * the attributes are stale.
511 vap->va_size = np->n_size;
513 KDTRACE_NFS_ATTRCACHE_FLUSH_DONE(vp);
514 vnode_pager_setsize(vp, np->n_size);
515 } else if (np->n_flag & NMODIFIED) {
517 * We've modified the file: Use the larger
518 * of our size, and the server's size.
520 if (vap->va_size < np->n_size) {
521 vap->va_size = np->n_size;
523 np->n_size = vap->va_size;
524 np->n_flag |= NSIZECHANGED;
526 vnode_pager_setsize(vp, np->n_size);
527 } else if (vap->va_size < np->n_size) {
529 * When shrinking the size, the call to
530 * vnode_pager_setsize() cannot be done
531 * with the mutex held, so delay it until
532 * after the mtx_unlock call.
534 nsize = np->n_size = vap->va_size;
535 np->n_flag |= NSIZECHANGED;
538 np->n_size = vap->va_size;
539 np->n_flag |= NSIZECHANGED;
540 vnode_pager_setsize(vp, np->n_size);
543 np->n_size = vap->va_size;
547 * The following checks are added to prevent a race between (say)
548 * a READDIR+ and a WRITE.
549 * READDIR+, WRITE requests sent out.
550 * READDIR+ resp, WRITE resp received on client.
551 * However, the WRITE resp was handled before the READDIR+ resp
552 * causing the post op attrs from the write to be loaded first
553 * and the attrs from the READDIR+ to be loaded later. If this
554 * happens, we have stale attrs loaded into the attrcache.
555 * We detect this by for the mtime moving back. We invalidate the
556 * attrcache when this happens.
558 if (timespeccmp(&mtime_save, &vap->va_mtime, >)) {
559 /* Size changed or mtime went backwards */
561 KDTRACE_NFS_ATTRCACHE_FLUSH_DONE(vp);
564 NFSBCOPY((caddr_t)vap, (caddr_t)vaper, sizeof(*vap));
565 if (np->n_flag & NCHG) {
566 if (np->n_flag & NACC)
567 vaper->va_atime = np->n_atim;
568 if (np->n_flag & NUPD)
569 vaper->va_mtime = np->n_mtim;
575 if (np->n_attrstamp != 0)
576 KDTRACE_NFS_ATTRCACHE_LOAD_DONE(vp, vap, error);
580 vnode_pager_setsize(vp, nsize);
585 * Fill in the client id name. For these bytes:
586 * 1 - they must be unique
587 * 2 - they should be persistent across client reboots
588 * 1 is more critical than 2
589 * Use the mount point's unique id plus either the uuid or, if that
590 * isn't set, random junk.
593 nfscl_fillclid(u_int64_t clval, char *uuid, u_int8_t *cp, u_int16_t idlen)
598 * First, put in the 64bit mount point identifier.
600 if (idlen >= sizeof (u_int64_t)) {
601 NFSBCOPY((caddr_t)&clval, cp, sizeof (u_int64_t));
602 cp += sizeof (u_int64_t);
603 idlen -= sizeof (u_int64_t);
607 * If uuid is non-zero length, use it.
609 uuidlen = strlen(uuid);
610 if (uuidlen > 0 && idlen >= uuidlen) {
611 NFSBCOPY(uuid, cp, uuidlen);
617 * This only normally happens if the uuid isn't set.
620 *cp++ = (u_int8_t)(arc4random() % 256);
626 * Fill in a lock owner name. For now, pid + the process's creation time.
629 nfscl_filllockowner(void *id, u_int8_t *cp, int flags)
638 /* Return the single open_owner of all 0 bytes. */
639 bzero(cp, NFSV4CL_LOCKNAMELEN);
642 if ((flags & F_POSIX) != 0) {
643 p = (struct proc *)id;
649 tl.lval = p->p_stats->p_start.tv_sec;
654 tl.lval = p->p_stats->p_start.tv_usec;
659 } else if ((flags & F_FLOCK) != 0) {
660 bcopy(&id, cp, sizeof(id));
661 bzero(&cp[sizeof(id)], NFSV4CL_LOCKNAMELEN - sizeof(id));
663 printf("nfscl_filllockowner: not F_POSIX or F_FLOCK\n");
664 bzero(cp, NFSV4CL_LOCKNAMELEN);
669 * Find the parent process for the thread passed in as an argument.
670 * If none exists, return NULL, otherwise return a thread for the parent.
671 * (Can be any of the threads, since it is only used for td->td_proc.)
674 nfscl_getparent(struct thread *td)
687 ptd = TAILQ_FIRST(&p->p_threads);
692 * Start up the renew kernel thread.
695 start_nfscl(void *arg)
697 struct nfsclclient *clp;
700 clp = (struct nfsclclient *)arg;
701 td = TAILQ_FIRST(&clp->nfsc_renewthread->p_threads);
702 nfscl_renewthread(clp, td);
707 nfscl_start_renewthread(struct nfsclclient *clp)
710 kproc_create(start_nfscl, (void *)clp, &clp->nfsc_renewthread, 0, 0,
716 * For NFSv4, it assumes that nfsv4_wccattr() was used to set up the getattr
717 * as the first Op after PutFH.
718 * (For NFSv4, the postop attributes are after the Op, so they can't be
719 * parsed here. A separate call to nfscl_postop_attr() is required.)
722 nfscl_wcc_data(struct nfsrv_descript *nd, struct vnode *vp,
723 struct nfsvattr *nap, int *flagp, int *wccflagp, void *stuff)
726 struct nfsnode *np = VTONFS(vp);
727 struct nfsvattr nfsva;
730 if (wccflagp != NULL)
732 if (nd->nd_flag & ND_NFSV3) {
734 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
735 if (*tl == newnfs_true) {
736 NFSM_DISSECT(tl, u_int32_t *, 6 * NFSX_UNSIGNED);
737 if (wccflagp != NULL) {
738 mtx_lock(&np->n_mtx);
739 *wccflagp = (np->n_mtime.tv_sec ==
740 fxdr_unsigned(u_int32_t, *(tl + 2)) &&
741 np->n_mtime.tv_nsec ==
742 fxdr_unsigned(u_int32_t, *(tl + 3)));
743 mtx_unlock(&np->n_mtx);
746 error = nfscl_postop_attr(nd, nap, flagp, stuff);
747 if (wccflagp != NULL && *flagp == 0)
749 } else if ((nd->nd_flag & (ND_NOMOREDATA | ND_NFSV4 | ND_V4WCCATTR))
750 == (ND_NFSV4 | ND_V4WCCATTR)) {
751 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL,
752 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0,
753 NULL, NULL, NULL, NULL, NULL);
757 * Get rid of Op# and status for next op.
759 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
761 nd->nd_flag |= ND_NOMOREDATA;
762 if (wccflagp != NULL &&
763 nfsva.na_vattr.va_mtime.tv_sec != 0) {
764 mtx_lock(&np->n_mtx);
765 *wccflagp = (np->n_mtime.tv_sec ==
766 nfsva.na_vattr.va_mtime.tv_sec &&
767 np->n_mtime.tv_nsec ==
768 nfsva.na_vattr.va_mtime.tv_sec);
769 mtx_unlock(&np->n_mtx);
777 * Get postop attributes.
780 nfscl_postop_attr(struct nfsrv_descript *nd, struct nfsvattr *nap, int *retp,
787 if (nd->nd_flag & ND_NOMOREDATA)
789 if (nd->nd_flag & ND_NFSV3) {
790 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
791 *retp = fxdr_unsigned(int, *tl);
792 } else if (nd->nd_flag & ND_NFSV4) {
794 * For NFSv4, the postop attr are at the end, so no point
795 * in looking if nd_repstat != 0.
797 if (!nd->nd_repstat) {
798 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
800 /* should never happen since nd_repstat != 0 */
801 nd->nd_flag |= ND_NOMOREDATA;
805 } else if (!nd->nd_repstat) {
806 /* For NFSv2, the attributes are here iff nd_repstat == 0 */
810 error = nfsm_loadattr(nd, nap);
819 * Fill in the setable attributes. The full argument indicates whether
820 * to fill in them all or just mode and time.
823 nfscl_fillsattr(struct nfsrv_descript *nd, struct vattr *vap,
824 struct vnode *vp, int flags, u_int32_t rdev)
827 struct nfsv2_sattr *sp;
828 nfsattrbit_t attrbits;
830 switch (nd->nd_flag & (ND_NFSV2 | ND_NFSV3 | ND_NFSV4)) {
832 NFSM_BUILD(sp, struct nfsv2_sattr *, NFSX_V2SATTR);
833 if (vap->va_mode == (mode_t)VNOVAL)
834 sp->sa_mode = newnfs_xdrneg1;
836 sp->sa_mode = vtonfsv2_mode(vap->va_type, vap->va_mode);
837 if (vap->va_uid == (uid_t)VNOVAL)
838 sp->sa_uid = newnfs_xdrneg1;
840 sp->sa_uid = txdr_unsigned(vap->va_uid);
841 if (vap->va_gid == (gid_t)VNOVAL)
842 sp->sa_gid = newnfs_xdrneg1;
844 sp->sa_gid = txdr_unsigned(vap->va_gid);
845 if (flags & NFSSATTR_SIZE0)
847 else if (flags & NFSSATTR_SIZENEG1)
848 sp->sa_size = newnfs_xdrneg1;
849 else if (flags & NFSSATTR_SIZERDEV)
850 sp->sa_size = txdr_unsigned(rdev);
852 sp->sa_size = txdr_unsigned(vap->va_size);
853 txdr_nfsv2time(&vap->va_atime, &sp->sa_atime);
854 txdr_nfsv2time(&vap->va_mtime, &sp->sa_mtime);
857 if (vap->va_mode != (mode_t)VNOVAL) {
858 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
860 *tl = txdr_unsigned(vap->va_mode);
862 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
865 if ((flags & NFSSATTR_FULL) && vap->va_uid != (uid_t)VNOVAL) {
866 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
868 *tl = txdr_unsigned(vap->va_uid);
870 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
873 if ((flags & NFSSATTR_FULL) && vap->va_gid != (gid_t)VNOVAL) {
874 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
876 *tl = txdr_unsigned(vap->va_gid);
878 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
881 if ((flags & NFSSATTR_FULL) && vap->va_size != VNOVAL) {
882 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
884 txdr_hyper(vap->va_size, tl);
886 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
889 if (vap->va_atime.tv_sec != VNOVAL) {
890 if ((vap->va_vaflags & VA_UTIMES_NULL) == 0) {
891 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
892 *tl++ = txdr_unsigned(NFSV3SATTRTIME_TOCLIENT);
893 txdr_nfsv3time(&vap->va_atime, tl);
895 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
896 *tl = txdr_unsigned(NFSV3SATTRTIME_TOSERVER);
899 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
900 *tl = txdr_unsigned(NFSV3SATTRTIME_DONTCHANGE);
902 if (vap->va_mtime.tv_sec != VNOVAL) {
903 if ((vap->va_vaflags & VA_UTIMES_NULL) == 0) {
904 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
905 *tl++ = txdr_unsigned(NFSV3SATTRTIME_TOCLIENT);
906 txdr_nfsv3time(&vap->va_mtime, tl);
908 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
909 *tl = txdr_unsigned(NFSV3SATTRTIME_TOSERVER);
912 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
913 *tl = txdr_unsigned(NFSV3SATTRTIME_DONTCHANGE);
917 NFSZERO_ATTRBIT(&attrbits);
918 if (vap->va_mode != (mode_t)VNOVAL)
919 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_MODE);
920 if ((flags & NFSSATTR_FULL) && vap->va_uid != (uid_t)VNOVAL)
921 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_OWNER);
922 if ((flags & NFSSATTR_FULL) && vap->va_gid != (gid_t)VNOVAL)
923 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_OWNERGROUP);
924 if ((flags & NFSSATTR_FULL) && vap->va_size != VNOVAL)
925 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_SIZE);
926 if (vap->va_atime.tv_sec != VNOVAL)
927 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEACCESSSET);
928 if (vap->va_mtime.tv_sec != VNOVAL)
929 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFYSET);
930 (void) nfsv4_fillattr(nd, vp->v_mount, vp, NULL, vap, NULL, 0,
931 &attrbits, NULL, NULL, 0, 0, 0, 0, (uint64_t)0);
937 * nfscl_request() - mostly a wrapper for newnfs_request().
940 nfscl_request(struct nfsrv_descript *nd, struct vnode *vp, NFSPROC_T *p,
941 struct ucred *cred, void *stuff)
944 struct nfsmount *nmp;
946 nmp = VFSTONFS(vp->v_mount);
947 if (nd->nd_flag & ND_NFSV4)
949 else if (nd->nd_flag & ND_NFSV3)
953 ret = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred,
954 NFS_PROG, vers, NULL, 1, NULL, NULL);
959 * fill in this bsden's variant of statfs using nfsstatfs.
962 nfscl_loadsbinfo(struct nfsmount *nmp, struct nfsstatfs *sfp, void *statfs)
964 struct statfs *sbp = (struct statfs *)statfs;
966 if (nmp->nm_flag & (NFSMNT_NFSV3 | NFSMNT_NFSV4)) {
967 sbp->f_bsize = NFS_FABLKSIZE;
968 sbp->f_blocks = sfp->sf_tbytes / NFS_FABLKSIZE;
969 sbp->f_bfree = sfp->sf_fbytes / NFS_FABLKSIZE;
971 * Although sf_abytes is uint64_t and f_bavail is int64_t,
972 * the value after dividing by NFS_FABLKSIZE is small
973 * enough that it will fit in 63bits, so it is ok to
974 * assign it to f_bavail without fear that it will become
977 sbp->f_bavail = sfp->sf_abytes / NFS_FABLKSIZE;
978 sbp->f_files = sfp->sf_tfiles;
979 /* Since f_ffree is int64_t, clip it to 63bits. */
980 if (sfp->sf_ffiles > INT64_MAX)
981 sbp->f_ffree = INT64_MAX;
983 sbp->f_ffree = sfp->sf_ffiles;
984 } else if ((nmp->nm_flag & NFSMNT_NFSV4) == 0) {
986 * The type casts to (int32_t) ensure that this code is
987 * compatible with the old NFS client, in that it will
988 * propagate bit31 to the high order bits. This may or may
989 * not be correct for NFSv2, but since it is a legacy
990 * environment, I'd rather retain backwards compatibility.
992 sbp->f_bsize = (int32_t)sfp->sf_bsize;
993 sbp->f_blocks = (int32_t)sfp->sf_blocks;
994 sbp->f_bfree = (int32_t)sfp->sf_bfree;
995 sbp->f_bavail = (int32_t)sfp->sf_bavail;
1002 * Use the fsinfo stuff to update the mount point.
1005 nfscl_loadfsinfo(struct nfsmount *nmp, struct nfsfsinfo *fsp)
1008 if ((nmp->nm_wsize == 0 || fsp->fs_wtpref < nmp->nm_wsize) &&
1009 fsp->fs_wtpref >= NFS_FABLKSIZE)
1010 nmp->nm_wsize = (fsp->fs_wtpref + NFS_FABLKSIZE - 1) &
1011 ~(NFS_FABLKSIZE - 1);
1012 if (fsp->fs_wtmax < nmp->nm_wsize && fsp->fs_wtmax > 0) {
1013 nmp->nm_wsize = fsp->fs_wtmax & ~(NFS_FABLKSIZE - 1);
1014 if (nmp->nm_wsize == 0)
1015 nmp->nm_wsize = fsp->fs_wtmax;
1017 if (nmp->nm_wsize < NFS_FABLKSIZE)
1018 nmp->nm_wsize = NFS_FABLKSIZE;
1019 if ((nmp->nm_rsize == 0 || fsp->fs_rtpref < nmp->nm_rsize) &&
1020 fsp->fs_rtpref >= NFS_FABLKSIZE)
1021 nmp->nm_rsize = (fsp->fs_rtpref + NFS_FABLKSIZE - 1) &
1022 ~(NFS_FABLKSIZE - 1);
1023 if (fsp->fs_rtmax < nmp->nm_rsize && fsp->fs_rtmax > 0) {
1024 nmp->nm_rsize = fsp->fs_rtmax & ~(NFS_FABLKSIZE - 1);
1025 if (nmp->nm_rsize == 0)
1026 nmp->nm_rsize = fsp->fs_rtmax;
1028 if (nmp->nm_rsize < NFS_FABLKSIZE)
1029 nmp->nm_rsize = NFS_FABLKSIZE;
1030 if ((nmp->nm_readdirsize == 0 || fsp->fs_dtpref < nmp->nm_readdirsize)
1031 && fsp->fs_dtpref >= NFS_DIRBLKSIZ)
1032 nmp->nm_readdirsize = (fsp->fs_dtpref + NFS_DIRBLKSIZ - 1) &
1033 ~(NFS_DIRBLKSIZ - 1);
1034 if (fsp->fs_rtmax < nmp->nm_readdirsize && fsp->fs_rtmax > 0) {
1035 nmp->nm_readdirsize = fsp->fs_rtmax & ~(NFS_DIRBLKSIZ - 1);
1036 if (nmp->nm_readdirsize == 0)
1037 nmp->nm_readdirsize = fsp->fs_rtmax;
1039 if (nmp->nm_readdirsize < NFS_DIRBLKSIZ)
1040 nmp->nm_readdirsize = NFS_DIRBLKSIZ;
1041 if (fsp->fs_maxfilesize > 0 &&
1042 fsp->fs_maxfilesize < nmp->nm_maxfilesize)
1043 nmp->nm_maxfilesize = fsp->fs_maxfilesize;
1044 nmp->nm_mountp->mnt_stat.f_iosize = newnfs_iosize(nmp);
1045 nmp->nm_state |= NFSSTA_GOTFSINFO;
1049 * Lookups source address which should be used to communicate with
1050 * @nmp and stores it inside @pdst.
1052 * Returns 0 on success.
1055 nfscl_getmyip(struct nfsmount *nmp, struct in6_addr *paddr, int *isinet6p)
1057 #if defined(INET6) || defined(INET)
1060 fibnum = curthread->td_proc->p_fibnum;
1063 if (nmp->nm_nam->sa_family == AF_INET) {
1064 struct sockaddr_in *sin;
1065 struct nhop4_extended nh_ext;
1067 sin = (struct sockaddr_in *)nmp->nm_nam;
1068 CURVNET_SET(CRED_TO_VNET(nmp->nm_sockreq.nr_cred));
1069 error = fib4_lookup_nh_ext(fibnum, sin->sin_addr, 0, 0,
1075 if ((ntohl(nh_ext.nh_src.s_addr) >> IN_CLASSA_NSHIFT) ==
1077 /* Ignore loopback addresses */
1082 *((struct in_addr *)paddr) = nh_ext.nh_src;
1084 return (u_int8_t *)paddr;
1088 if (nmp->nm_nam->sa_family == AF_INET6) {
1089 struct sockaddr_in6 *sin6;
1091 sin6 = (struct sockaddr_in6 *)nmp->nm_nam;
1093 CURVNET_SET(CRED_TO_VNET(nmp->nm_sockreq.nr_cred));
1094 error = in6_selectsrc_addr(fibnum, &sin6->sin6_addr,
1095 sin6->sin6_scope_id, NULL, paddr, NULL);
1100 if (IN6_IS_ADDR_LOOPBACK(paddr))
1103 /* Scope is embedded in */
1106 return (u_int8_t *)paddr;
1113 * Copy NFS uid, gids from the cred structure.
1116 newnfs_copyincred(struct ucred *cr, struct nfscred *nfscr)
1120 KASSERT(cr->cr_ngroups >= 0,
1121 ("newnfs_copyincred: negative cr_ngroups"));
1122 nfscr->nfsc_uid = cr->cr_uid;
1123 nfscr->nfsc_ngroups = MIN(cr->cr_ngroups, NFS_MAXGRPS + 1);
1124 for (i = 0; i < nfscr->nfsc_ngroups; i++)
1125 nfscr->nfsc_groups[i] = cr->cr_groups[i];
1130 * Do any client specific initialization.
1135 static int inited = 0;
1141 ncl_pbuf_freecnt = nswbuf / 2 + 1;
1145 * Check each of the attributes to be set, to ensure they aren't already
1146 * the correct value. Disable setting ones already correct.
1149 nfscl_checksattr(struct vattr *vap, struct nfsvattr *nvap)
1152 if (vap->va_mode != (mode_t)VNOVAL) {
1153 if (vap->va_mode == nvap->na_mode)
1154 vap->va_mode = (mode_t)VNOVAL;
1156 if (vap->va_uid != (uid_t)VNOVAL) {
1157 if (vap->va_uid == nvap->na_uid)
1158 vap->va_uid = (uid_t)VNOVAL;
1160 if (vap->va_gid != (gid_t)VNOVAL) {
1161 if (vap->va_gid == nvap->na_gid)
1162 vap->va_gid = (gid_t)VNOVAL;
1164 if (vap->va_size != VNOVAL) {
1165 if (vap->va_size == nvap->na_size)
1166 vap->va_size = VNOVAL;
1170 * We are normally called with only a partially initialized
1171 * VAP. Since the NFSv3 spec says that server may use the
1172 * file attributes to store the verifier, the spec requires
1173 * us to do a SETATTR RPC. FreeBSD servers store the verifier
1174 * in atime, but we can't really assume that all servers will
1175 * so we ensure that our SETATTR sets both atime and mtime.
1176 * Set the VA_UTIMES_NULL flag for this case, so that
1177 * the server's time will be used. This is needed to
1178 * work around a bug in some Solaris servers, where
1179 * setting the time TOCLIENT causes the Setattr RPC
1180 * to return NFS_OK, but not set va_mode.
1182 if (vap->va_mtime.tv_sec == VNOVAL) {
1183 vfs_timestamp(&vap->va_mtime);
1184 vap->va_vaflags |= VA_UTIMES_NULL;
1186 if (vap->va_atime.tv_sec == VNOVAL)
1187 vap->va_atime = vap->va_mtime;
1192 * Map nfsv4 errors to errno.h errors.
1193 * The uid and gid arguments are only used for NFSERR_BADOWNER and that
1194 * error should only be returned for the Open, Create and Setattr Ops.
1195 * As such, most calls can just pass in 0 for those arguments.
1198 nfscl_maperr(struct thread *td, int error, uid_t uid, gid_t gid)
1202 if (error < 10000 || error >= NFSERR_STALEWRITEVERF)
1209 case NFSERR_BADOWNER:
1210 tprintf(p, LOG_INFO,
1211 "No name and/or group mapping for uid,gid:(%d,%d)\n",
1214 case NFSERR_BADNAME:
1215 case NFSERR_BADCHAR:
1216 printf("nfsv4 char/name not handled by server\n");
1218 case NFSERR_STALECLIENTID:
1219 case NFSERR_STALESTATEID:
1220 case NFSERR_EXPIRED:
1221 case NFSERR_BADSTATEID:
1222 case NFSERR_BADSESSION:
1223 printf("nfsv4 recover err returned %d\n", error);
1225 case NFSERR_BADHANDLE:
1226 case NFSERR_SERVERFAULT:
1227 case NFSERR_BADTYPE:
1228 case NFSERR_FHEXPIRED:
1229 case NFSERR_RESOURCE:
1231 case NFSERR_NOFILEHANDLE:
1232 case NFSERR_MINORVERMISMATCH:
1233 case NFSERR_OLDSTATEID:
1234 case NFSERR_BADSEQID:
1235 case NFSERR_LEASEMOVED:
1236 case NFSERR_RECLAIMBAD:
1238 case NFSERR_OPILLEGAL:
1239 printf("nfsv4 client/server protocol prob err=%d\n",
1243 tprintf(p, LOG_INFO, "nfsv4 err=%d\n", error);
1249 * Check to see if the process for this owner exists. Return 1 if it doesn't
1253 nfscl_procdoesntexist(u_int8_t *own)
1263 /* For the single open_owner of all 0 bytes, just return 0. */
1264 for (i = 0; i < NFSV4CL_LOCKNAMELEN; i++)
1267 if (i == NFSV4CL_LOCKNAMELEN)
1270 tl.cval[0] = *own++;
1271 tl.cval[1] = *own++;
1272 tl.cval[2] = *own++;
1273 tl.cval[3] = *own++;
1275 p = pfind_locked(pid);
1278 if (p->p_stats == NULL) {
1282 tl.cval[0] = *own++;
1283 tl.cval[1] = *own++;
1284 tl.cval[2] = *own++;
1285 tl.cval[3] = *own++;
1286 if (tl.lval != p->p_stats->p_start.tv_sec) {
1289 tl.cval[0] = *own++;
1290 tl.cval[1] = *own++;
1291 tl.cval[2] = *own++;
1293 if (tl.lval != p->p_stats->p_start.tv_usec)
1301 * - nfs pseudo system call for the client
1307 nfssvc_nfscl(struct thread *td, struct nfssvc_args *uap)
1310 struct nfscbd_args nfscbdarg;
1311 struct nfsd_nfscbd_args nfscbdarg2;
1312 struct nameidata nd;
1313 struct nfscl_dumpmntopts dumpmntopts;
1314 cap_rights_t rights;
1318 struct nfsmount *nmp;
1320 if (uap->flag & NFSSVC_CBADDSOCK) {
1321 error = copyin(uap->argp, (caddr_t)&nfscbdarg, sizeof(nfscbdarg));
1325 * Since we don't know what rights might be required,
1326 * pretend that we need them all. It is better to be too
1327 * careful than too reckless.
1329 error = fget(td, nfscbdarg.sock,
1330 cap_rights_init(&rights, CAP_SOCK_CLIENT), &fp);
1333 if (fp->f_type != DTYPE_SOCKET) {
1337 error = nfscbd_addsock(fp);
1339 if (!error && nfscl_enablecallb == 0) {
1340 nfsv4_cbport = nfscbdarg.port;
1341 nfscl_enablecallb = 1;
1343 } else if (uap->flag & NFSSVC_NFSCBD) {
1344 if (uap->argp == NULL)
1346 error = copyin(uap->argp, (caddr_t)&nfscbdarg2,
1347 sizeof(nfscbdarg2));
1350 error = nfscbd_nfsd(td, &nfscbdarg2);
1351 } else if (uap->flag & NFSSVC_DUMPMNTOPTS) {
1352 error = copyin(uap->argp, &dumpmntopts, sizeof(dumpmntopts));
1353 if (error == 0 && (dumpmntopts.ndmnt_blen < 256 ||
1354 dumpmntopts.ndmnt_blen > 1024))
1357 error = nfsrv_lookupfilename(&nd,
1358 dumpmntopts.ndmnt_fname, td);
1359 if (error == 0 && strcmp(nd.ni_vp->v_mount->mnt_vfc->vfc_name,
1365 buf = malloc(dumpmntopts.ndmnt_blen, M_TEMP, M_WAITOK);
1366 nfscl_retopts(VFSTONFS(nd.ni_vp->v_mount), buf,
1367 dumpmntopts.ndmnt_blen);
1369 error = copyout(buf, dumpmntopts.ndmnt_buf,
1370 dumpmntopts.ndmnt_blen);
1373 } else if (uap->flag & NFSSVC_FORCEDISM) {
1374 buf = malloc(MNAMELEN + 1, M_TEMP, M_WAITOK);
1375 error = copyinstr(uap->argp, buf, MNAMELEN + 1, NULL);
1378 mtx_lock(&mountlist_mtx);
1379 TAILQ_FOREACH(mp, &mountlist, mnt_list) {
1380 if (strcmp(mp->mnt_stat.f_mntonname, buf) ==
1381 0 && strcmp(mp->mnt_stat.f_fstypename,
1382 "nfs") == 0 && mp->mnt_data != NULL) {
1384 mtx_lock(&nmp->nm_mtx);
1385 if ((nmp->nm_privflag &
1386 NFSMNTP_FORCEDISM) == 0) {
1388 (NFSMNTP_FORCEDISM |
1389 NFSMNTP_CANCELRPCS);
1390 mtx_unlock(&nmp->nm_mtx);
1393 mtx_unlock(&nmp->nm_mtx);
1398 mtx_unlock(&mountlist_mtx);
1402 * Call newnfs_nmcancelreqs() to cause
1403 * any RPCs in progress on the mount point to
1405 * This will cause any process waiting for an
1406 * RPC to complete while holding a vnode lock
1407 * on the mounted-on vnode (such as "df" or
1408 * a non-forced "umount") to fail.
1409 * This will unlock the mounted-on vnode so
1410 * a forced dismount can succeed.
1411 * Then clear NFSMNTP_CANCELRPCS and wakeup(),
1412 * so that nfs_unmount() can complete.
1414 newnfs_nmcancelreqs(nmp);
1415 mtx_lock(&nmp->nm_mtx);
1416 nmp->nm_privflag &= ~NFSMNTP_CANCELRPCS;
1418 mtx_unlock(&nmp->nm_mtx);
1429 extern int (*nfsd_call_nfscl)(struct thread *, struct nfssvc_args *);
1432 * Called once to initialize data structures...
1435 nfscl_modevent(module_t mod, int type, void *data)
1438 static int loaded = 0;
1445 mtx_init(&ncl_iod_mutex, "ncl_iod_mutex", NULL, MTX_DEF);
1450 ncl_call_invalcaches = ncl_invalcaches;
1451 nfsd_call_nfscl = nfssvc_nfscl;
1456 if (nfs_numnfscbd != 0) {
1462 * XXX: Unloading of nfscl module is unsupported.
1465 ncl_call_invalcaches = NULL;
1466 nfsd_call_nfscl = NULL;
1467 /* and get rid of the mutexes */
1468 mtx_destroy(&ncl_iod_mutex);
1480 static moduledata_t nfscl_mod = {
1485 DECLARE_MODULE(nfscl, nfscl_mod, SI_SUB_VFS, SI_ORDER_FIRST);
1487 /* So that loader and kldload(2) can find us, wherever we are.. */
1488 MODULE_VERSION(nfscl, 1);
1489 MODULE_DEPEND(nfscl, nfscommon, 1, 1, 1);
1490 MODULE_DEPEND(nfscl, krpc, 1, 1, 1);
1491 MODULE_DEPEND(nfscl, nfssvc, 1, 1, 1);
1492 MODULE_DEPEND(nfscl, nfslock, 1, 1, 1);