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 * 4. 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("$FreeBSD$");
37 #include "opt_inet6.h"
39 #include <sys/capsicum.h>
42 * generally, I don't like #includes inside .h files, but it seems to
43 * be the easiest way to handle the port.
47 #include <sys/sysctl.h>
48 #include <fs/nfs/nfsport.h>
49 #include <netinet/if_ether.h>
50 #include <net/if_types.h>
52 #include <fs/nfsclient/nfs_kdtrace.h>
55 dtrace_nfsclient_attrcache_flush_probe_func_t
56 dtrace_nfscl_attrcache_flush_done_probe;
57 uint32_t nfscl_attrcache_flush_done_id;
59 dtrace_nfsclient_attrcache_get_hit_probe_func_t
60 dtrace_nfscl_attrcache_get_hit_probe;
61 uint32_t nfscl_attrcache_get_hit_id;
63 dtrace_nfsclient_attrcache_get_miss_probe_func_t
64 dtrace_nfscl_attrcache_get_miss_probe;
65 uint32_t nfscl_attrcache_get_miss_id;
67 dtrace_nfsclient_attrcache_load_probe_func_t
68 dtrace_nfscl_attrcache_load_done_probe;
69 uint32_t nfscl_attrcache_load_done_id;
70 #endif /* !KDTRACE_HOOKS */
72 extern u_int32_t newnfs_true, newnfs_false, newnfs_xdrneg1;
73 extern struct vop_vector newnfs_vnodeops;
74 extern struct vop_vector newnfs_fifoops;
75 extern uma_zone_t newnfsnode_zone;
76 extern struct buf_ops buf_ops_newnfs;
77 extern int ncl_pbuf_freecnt;
78 extern short nfsv4_cbport;
79 extern int nfscl_enablecallb;
80 extern int nfs_numnfscbd;
81 extern int nfscl_inited;
82 struct mtx nfs_clstate_mutex;
83 struct mtx ncl_iod_mutex;
86 extern void (*ncl_call_invalcaches)(struct vnode *);
88 SYSCTL_DECL(_vfs_nfs);
89 static int ncl_fileid_maxwarnings = 10;
90 SYSCTL_INT(_vfs_nfs, OID_AUTO, fileid_maxwarnings, CTLFLAG_RWTUN,
91 &ncl_fileid_maxwarnings, 0,
92 "Limit fileid corruption warnings; 0 is off; -1 is unlimited");
93 static volatile int ncl_fileid_nwarnings;
95 static void nfscl_warn_fileid(struct nfsmount *, struct nfsvattr *,
99 * Comparison function for vfs_hash functions.
102 newnfs_vncmpf(struct vnode *vp, void *arg)
104 struct nfsfh *nfhp = (struct nfsfh *)arg;
105 struct nfsnode *np = VTONFS(vp);
107 if (np->n_fhp->nfh_len != nfhp->nfh_len ||
108 NFSBCMP(np->n_fhp->nfh_fh, nfhp->nfh_fh, nfhp->nfh_len))
114 * Look up a vnode/nfsnode by file handle.
115 * Callers must check for mount points!!
116 * In all cases, a pointer to a
117 * nfsnode structure is returned.
118 * This variant takes a "struct nfsfh *" as second argument and uses
119 * that structure up, either by hanging off the nfsnode or FREEing it.
122 nfscl_nget(struct mount *mntp, struct vnode *dvp, struct nfsfh *nfhp,
123 struct componentname *cnp, struct thread *td, struct nfsnode **npp,
124 void *stuff, int lkflags)
126 struct nfsnode *np, *dnp;
127 struct vnode *vp, *nvp;
128 struct nfsv4node *newd, *oldd;
131 struct nfsmount *nmp;
133 nmp = VFSTONFS(mntp);
137 hash = fnv_32_buf(nfhp->nfh_fh, nfhp->nfh_len, FNV1_32_INIT);
139 error = vfs_hash_get(mntp, hash, lkflags,
140 td, &nvp, newnfs_vncmpf, nfhp);
141 if (error == 0 && nvp != NULL) {
143 * I believe there is a slight chance that vgonel() could
144 * get called on this vnode between when NFSVOPLOCK() drops
145 * the VI_LOCK() and vget() acquires it again, so that it
146 * hasn't yet had v_usecount incremented. If this were to
147 * happen, the VI_DOOMED flag would be set, so check for
148 * that here. Since we now have the v_usecount incremented,
149 * we should be ok until we vrele() it, if the VI_DOOMED
150 * flag isn't set now.
153 if ((nvp->v_iflag & VI_DOOMED)) {
162 FREE((caddr_t)nfhp, M_NFSFH);
168 * For NFSv4, check to see if it is the same name and
169 * replace the name, if it is different.
172 if ((nmp->nm_flag & NFSMNT_NFSV4) && np->n_v4 != NULL &&
173 nvp->v_type == VREG &&
174 (np->n_v4->n4_namelen != cnp->cn_namelen ||
175 NFSBCMP(cnp->cn_nameptr, NFS4NODENAME(np->n_v4),
177 dnp->n_fhp->nfh_len != np->n_v4->n4_fhlen ||
178 NFSBCMP(dnp->n_fhp->nfh_fh, np->n_v4->n4_data,
179 dnp->n_fhp->nfh_len))) {
180 MALLOC(newd, struct nfsv4node *,
181 sizeof (struct nfsv4node) + dnp->n_fhp->nfh_len +
182 + cnp->cn_namelen - 1, M_NFSV4NODE, M_WAITOK);
184 if (newd != NULL && np->n_v4 != NULL && nvp->v_type == VREG
185 && (np->n_v4->n4_namelen != cnp->cn_namelen ||
186 NFSBCMP(cnp->cn_nameptr, NFS4NODENAME(np->n_v4),
188 dnp->n_fhp->nfh_len != np->n_v4->n4_fhlen ||
189 NFSBCMP(dnp->n_fhp->nfh_fh, np->n_v4->n4_data,
190 dnp->n_fhp->nfh_len))) {
194 np->n_v4->n4_fhlen = dnp->n_fhp->nfh_len;
195 np->n_v4->n4_namelen = cnp->cn_namelen;
196 NFSBCOPY(dnp->n_fhp->nfh_fh, np->n_v4->n4_data,
197 dnp->n_fhp->nfh_len);
198 NFSBCOPY(cnp->cn_nameptr, NFS4NODENAME(np->n_v4),
204 FREE((caddr_t)newd, M_NFSV4NODE);
206 FREE((caddr_t)oldd, M_NFSV4NODE);
208 FREE((caddr_t)nfhp, M_NFSFH);
211 np = uma_zalloc(newnfsnode_zone, M_WAITOK | M_ZERO);
213 error = getnewvnode("nfs", mntp, &newnfs_vnodeops, &nvp);
215 uma_zfree(newnfsnode_zone, np);
216 FREE((caddr_t)nfhp, M_NFSFH);
220 KASSERT(vp->v_bufobj.bo_bsize != 0, ("nfscl_nget: bo_bsize == 0"));
221 vp->v_bufobj.bo_ops = &buf_ops_newnfs;
225 * Initialize the mutex even if the vnode is going to be a loser.
226 * This simplifies the logic in reclaim, which can then unconditionally
227 * destroy the mutex (in the case of the loser, or if hash_insert
228 * happened to return an error no special casing is needed).
230 mtx_init(&np->n_mtx, "NEWNFSnode lock", NULL, MTX_DEF | MTX_DUPOK);
233 * Are we getting the root? If so, make sure the vnode flags
236 if ((nfhp->nfh_len == nmp->nm_fhsize) &&
237 !bcmp(nfhp->nfh_fh, nmp->nm_fh, nfhp->nfh_len)) {
238 if (vp->v_type == VNON)
240 vp->v_vflag |= VV_ROOT;
245 * For NFSv4, we have to attach the directory file handle and
246 * file name, so that Open Ops can be done later.
248 if (nmp->nm_flag & NFSMNT_NFSV4) {
249 MALLOC(np->n_v4, struct nfsv4node *, sizeof (struct nfsv4node)
250 + dnp->n_fhp->nfh_len + cnp->cn_namelen - 1, M_NFSV4NODE,
252 np->n_v4->n4_fhlen = dnp->n_fhp->nfh_len;
253 np->n_v4->n4_namelen = cnp->cn_namelen;
254 NFSBCOPY(dnp->n_fhp->nfh_fh, np->n_v4->n4_data,
255 dnp->n_fhp->nfh_len);
256 NFSBCOPY(cnp->cn_nameptr, NFS4NODENAME(np->n_v4),
263 * NFS supports recursive and shared locking.
265 lockmgr(vp->v_vnlock, LK_EXCLUSIVE | LK_NOWITNESS, NULL);
268 error = insmntque(vp, mntp);
271 mtx_destroy(&np->n_mtx);
272 FREE((caddr_t)nfhp, M_NFSFH);
273 if (np->n_v4 != NULL)
274 FREE((caddr_t)np->n_v4, M_NFSV4NODE);
275 uma_zfree(newnfsnode_zone, np);
278 error = vfs_hash_insert(vp, hash, lkflags,
279 td, &nvp, newnfs_vncmpf, nfhp);
284 /* vfs_hash_insert() vput()'s the losing vnode */
293 * Anothe variant of nfs_nget(). This one is only used by reopen. It
294 * takes almost the same args as nfs_nget(), but only succeeds if an entry
295 * exists in the cache. (Since files should already be "open" with a
296 * vnode ref cnt on the node when reopen calls this, it should always
298 * Also, don't get a vnode lock, since it may already be locked by some
299 * other process that is handling it. This is ok, since all other threads
300 * on the client are blocked by the nfsc_lock being exclusively held by the
301 * caller of this function.
304 nfscl_ngetreopen(struct mount *mntp, u_int8_t *fhp, int fhsize,
305 struct thread *td, struct nfsnode **npp)
313 /* For forced dismounts, just return error. */
314 if ((mntp->mnt_kern_flag & MNTK_UNMOUNTF))
316 MALLOC(nfhp, struct nfsfh *, sizeof (struct nfsfh) + fhsize,
318 bcopy(fhp, &nfhp->nfh_fh[0], fhsize);
319 nfhp->nfh_len = fhsize;
321 hash = fnv_32_buf(fhp, fhsize, FNV1_32_INIT);
324 * First, try to get the vnode locked, but don't block for the lock.
326 error = vfs_hash_get(mntp, hash, (LK_EXCLUSIVE | LK_NOWAIT), td, &nvp,
327 newnfs_vncmpf, nfhp);
328 if (error == 0 && nvp != NULL) {
329 NFSVOPUNLOCK(nvp, 0);
330 } else if (error == EBUSY) {
332 * The LK_EXCLOTHER lock type tells nfs_lock1() to not try
333 * and lock the vnode, but just get a v_usecount on it.
334 * LK_NOWAIT is set so that when vget() returns ENOENT,
335 * vfs_hash_get() fails instead of looping.
336 * If this succeeds, it is safe so long as a vflush() with
337 * FORCECLOSE has not been done. Since the Renew thread is
338 * stopped and the MNTK_UNMOUNTF flag is set before doing
339 * a vflush() with FORCECLOSE, we should be ok here.
341 if ((mntp->mnt_kern_flag & MNTK_UNMOUNTF))
344 error = vfs_hash_get(mntp, hash,
345 (LK_EXCLOTHER | LK_NOWAIT), td, &nvp,
346 newnfs_vncmpf, nfhp);
359 nfscl_warn_fileid(struct nfsmount *nmp, struct nfsvattr *oldnap,
360 struct nfsvattr *newnap)
364 if (ncl_fileid_maxwarnings >= 0 &&
365 ncl_fileid_nwarnings >= ncl_fileid_maxwarnings)
368 if (ncl_fileid_maxwarnings >= 0) {
369 if (++ncl_fileid_nwarnings >= ncl_fileid_maxwarnings)
373 printf("newnfs: server '%s' error: fileid changed. "
374 "fsid %jx:%jx: expected fileid %#jx, got %#jx. "
375 "(BROKEN NFS SERVER OR MIDDLEWARE)\n",
376 nmp->nm_com.nmcom_hostname,
377 (uintmax_t)nmp->nm_fsid[0],
378 (uintmax_t)nmp->nm_fsid[1],
379 (uintmax_t)oldnap->na_fileid,
380 (uintmax_t)newnap->na_fileid);
383 printf("newnfs: Logged %d times about fileid corruption; "
384 "going quiet to avoid spamming logs excessively. (Limit "
385 "is: %d).\n", ncl_fileid_nwarnings,
386 ncl_fileid_maxwarnings);
390 * Load the attribute cache (that lives in the nfsnode entry) with
391 * the attributes of the second argument and
393 * copy the attributes to *vaper
394 * Similar to nfs_loadattrcache(), except the attributes are passed in
395 * instead of being parsed out of the mbuf list.
398 nfscl_loadattrcache(struct vnode **vpp, struct nfsvattr *nap, void *nvaper,
399 void *stuff, int writeattr, int dontshrink)
401 struct vnode *vp = *vpp;
402 struct vattr *vap, *nvap = &nap->na_vattr, *vaper = nvaper;
404 struct nfsmount *nmp;
405 struct timespec mtime_save;
407 int setnsize, error, force_fid_err;
414 * If v_type == VNON it is a new node, so fill in the v_type,
415 * n_mtime fields. Check to see if it represents a special
416 * device, and if so, check for a possible alias. Once the
417 * correct vnode has been obtained, fill in the rest of the
422 if (vp->v_type != nvap->va_type) {
423 vp->v_type = nvap->va_type;
424 if (vp->v_type == VFIFO)
425 vp->v_op = &newnfs_fifoops;
426 np->n_mtime = nvap->va_mtime;
428 nmp = VFSTONFS(vp->v_mount);
429 vap = &np->n_vattr.na_vattr;
430 mtime_save = vap->va_mtime;
432 np->n_vattr.na_filerev = nap->na_filerev;
433 np->n_vattr.na_size = nap->na_size;
434 np->n_vattr.na_mtime = nap->na_mtime;
435 np->n_vattr.na_ctime = nap->na_ctime;
436 np->n_vattr.na_fsid = nap->na_fsid;
437 np->n_vattr.na_mode = nap->na_mode;
440 KFAIL_POINT_ERROR(DEBUG_FP, nfscl_force_fileid_warning,
443 * BROKEN NFS SERVER OR MIDDLEWARE
445 * Certain NFS servers (certain old proprietary filers ca.
446 * 2006) or broken middleboxes (e.g. WAN accelerator products)
447 * will respond to GETATTR requests with results for a
450 * The WAN accelerator we've observed not only serves stale
451 * cache results for a given file, it also occasionally serves
452 * results for wholly different files. This causes surprising
453 * problems; for example the cached size attribute of a file
454 * may truncate down and then back up, resulting in zero
455 * regions in file contents read by applications. We observed
456 * this reliably with Clang and .c files during parallel build.
457 * A pcap revealed packet fragmentation and GETATTR RPC
458 * responses with wholly wrong fileids.
460 if ((np->n_vattr.na_fileid != 0 &&
461 np->n_vattr.na_fileid != nap->na_fileid) ||
463 nfscl_warn_fileid(nmp, &np->n_vattr, nap);
467 NFSBCOPY((caddr_t)nap, (caddr_t)&np->n_vattr,
468 sizeof (struct nfsvattr));
472 * For NFSv4, if the node's fsid is not equal to the mount point's
473 * fsid, return the low order 32bits of the node's fsid. This
474 * allows getcwd(3) to work. There is a chance that the fsid might
475 * be the same as a local fs, but since this is in an NFS mount
476 * point, I don't think that will cause any problems?
478 if (NFSHASNFSV4(nmp) && NFSHASHASSETFSID(nmp) &&
479 (nmp->nm_fsid[0] != np->n_vattr.na_filesid[0] ||
480 nmp->nm_fsid[1] != np->n_vattr.na_filesid[1])) {
482 * va_fsid needs to be set to some value derived from
483 * np->n_vattr.na_filesid that is not equal
484 * vp->v_mount->mnt_stat.f_fsid[0], so that it changes
485 * from the value used for the top level server volume
486 * in the mounted subtree.
488 if (vp->v_mount->mnt_stat.f_fsid.val[0] !=
489 (uint32_t)np->n_vattr.na_filesid[0])
490 vap->va_fsid = (uint32_t)np->n_vattr.na_filesid[0];
492 vap->va_fsid = (uint32_t)hash32_buf(
493 np->n_vattr.na_filesid, 2 * sizeof(uint64_t), 0);
495 vap->va_fsid = vp->v_mount->mnt_stat.f_fsid.val[0];
496 np->n_attrstamp = time_second;
497 if (vap->va_size != np->n_size) {
498 if (vap->va_type == VREG) {
499 if (dontshrink && vap->va_size < np->n_size) {
501 * We've been told not to shrink the file;
502 * zero np->n_attrstamp to indicate that
503 * the attributes are stale.
505 vap->va_size = np->n_size;
507 KDTRACE_NFS_ATTRCACHE_FLUSH_DONE(vp);
508 vnode_pager_setsize(vp, np->n_size);
509 } else if (np->n_flag & NMODIFIED) {
511 * We've modified the file: Use the larger
512 * of our size, and the server's size.
514 if (vap->va_size < np->n_size) {
515 vap->va_size = np->n_size;
517 np->n_size = vap->va_size;
518 np->n_flag |= NSIZECHANGED;
520 vnode_pager_setsize(vp, np->n_size);
521 } else if (vap->va_size < np->n_size) {
523 * When shrinking the size, the call to
524 * vnode_pager_setsize() cannot be done
525 * with the mutex held, so delay it until
526 * after the mtx_unlock call.
528 nsize = np->n_size = vap->va_size;
529 np->n_flag |= NSIZECHANGED;
532 np->n_size = vap->va_size;
533 np->n_flag |= NSIZECHANGED;
534 vnode_pager_setsize(vp, np->n_size);
537 np->n_size = vap->va_size;
541 * The following checks are added to prevent a race between (say)
542 * a READDIR+ and a WRITE.
543 * READDIR+, WRITE requests sent out.
544 * READDIR+ resp, WRITE resp received on client.
545 * However, the WRITE resp was handled before the READDIR+ resp
546 * causing the post op attrs from the write to be loaded first
547 * and the attrs from the READDIR+ to be loaded later. If this
548 * happens, we have stale attrs loaded into the attrcache.
549 * We detect this by for the mtime moving back. We invalidate the
550 * attrcache when this happens.
552 if (timespeccmp(&mtime_save, &vap->va_mtime, >)) {
553 /* Size changed or mtime went backwards */
555 KDTRACE_NFS_ATTRCACHE_FLUSH_DONE(vp);
558 NFSBCOPY((caddr_t)vap, (caddr_t)vaper, sizeof(*vap));
559 if (np->n_flag & NCHG) {
560 if (np->n_flag & NACC)
561 vaper->va_atime = np->n_atim;
562 if (np->n_flag & NUPD)
563 vaper->va_mtime = np->n_mtim;
569 if (np->n_attrstamp != 0)
570 KDTRACE_NFS_ATTRCACHE_LOAD_DONE(vp, vap, error);
574 vnode_pager_setsize(vp, nsize);
579 * Fill in the client id name. For these bytes:
580 * 1 - they must be unique
581 * 2 - they should be persistent across client reboots
582 * 1 is more critical than 2
583 * Use the mount point's unique id plus either the uuid or, if that
584 * isn't set, random junk.
587 nfscl_fillclid(u_int64_t clval, char *uuid, u_int8_t *cp, u_int16_t idlen)
592 * First, put in the 64bit mount point identifier.
594 if (idlen >= sizeof (u_int64_t)) {
595 NFSBCOPY((caddr_t)&clval, cp, sizeof (u_int64_t));
596 cp += sizeof (u_int64_t);
597 idlen -= sizeof (u_int64_t);
601 * If uuid is non-zero length, use it.
603 uuidlen = strlen(uuid);
604 if (uuidlen > 0 && idlen >= uuidlen) {
605 NFSBCOPY(uuid, cp, uuidlen);
611 * This only normally happens if the uuid isn't set.
614 *cp++ = (u_int8_t)(arc4random() % 256);
620 * Fill in a lock owner name. For now, pid + the process's creation time.
623 nfscl_filllockowner(void *id, u_int8_t *cp, int flags)
633 bzero(cp, NFSV4CL_LOCKNAMELEN);
636 if ((flags & F_POSIX) != 0) {
637 p = (struct proc *)id;
643 tl.lval = p->p_stats->p_start.tv_sec;
648 tl.lval = p->p_stats->p_start.tv_usec;
653 } else if ((flags & F_FLOCK) != 0) {
654 bcopy(&id, cp, sizeof(id));
655 bzero(&cp[sizeof(id)], NFSV4CL_LOCKNAMELEN - sizeof(id));
657 printf("nfscl_filllockowner: not F_POSIX or F_FLOCK\n");
658 bzero(cp, NFSV4CL_LOCKNAMELEN);
663 * Find the parent process for the thread passed in as an argument.
664 * If none exists, return NULL, otherwise return a thread for the parent.
665 * (Can be any of the threads, since it is only used for td->td_proc.)
668 nfscl_getparent(struct thread *td)
681 ptd = TAILQ_FIRST(&p->p_threads);
686 * Start up the renew kernel thread.
689 start_nfscl(void *arg)
691 struct nfsclclient *clp;
694 clp = (struct nfsclclient *)arg;
695 td = TAILQ_FIRST(&clp->nfsc_renewthread->p_threads);
696 nfscl_renewthread(clp, td);
701 nfscl_start_renewthread(struct nfsclclient *clp)
704 kproc_create(start_nfscl, (void *)clp, &clp->nfsc_renewthread, 0, 0,
710 * For NFSv4, it assumes that nfsv4_wccattr() was used to set up the getattr
711 * as the first Op after PutFH.
712 * (For NFSv4, the postop attributes are after the Op, so they can't be
713 * parsed here. A separate call to nfscl_postop_attr() is required.)
716 nfscl_wcc_data(struct nfsrv_descript *nd, struct vnode *vp,
717 struct nfsvattr *nap, int *flagp, int *wccflagp, void *stuff)
720 struct nfsnode *np = VTONFS(vp);
721 struct nfsvattr nfsva;
724 if (wccflagp != NULL)
726 if (nd->nd_flag & ND_NFSV3) {
728 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
729 if (*tl == newnfs_true) {
730 NFSM_DISSECT(tl, u_int32_t *, 6 * NFSX_UNSIGNED);
731 if (wccflagp != NULL) {
732 mtx_lock(&np->n_mtx);
733 *wccflagp = (np->n_mtime.tv_sec ==
734 fxdr_unsigned(u_int32_t, *(tl + 2)) &&
735 np->n_mtime.tv_nsec ==
736 fxdr_unsigned(u_int32_t, *(tl + 3)));
737 mtx_unlock(&np->n_mtx);
740 error = nfscl_postop_attr(nd, nap, flagp, stuff);
741 } else if ((nd->nd_flag & (ND_NOMOREDATA | ND_NFSV4 | ND_V4WCCATTR))
742 == (ND_NFSV4 | ND_V4WCCATTR)) {
743 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL,
744 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0,
745 NULL, NULL, NULL, NULL, NULL);
749 * Get rid of Op# and status for next op.
751 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
753 nd->nd_flag |= ND_NOMOREDATA;
754 if (wccflagp != NULL &&
755 nfsva.na_vattr.va_mtime.tv_sec != 0) {
756 mtx_lock(&np->n_mtx);
757 *wccflagp = (np->n_mtime.tv_sec ==
758 nfsva.na_vattr.va_mtime.tv_sec &&
759 np->n_mtime.tv_nsec ==
760 nfsva.na_vattr.va_mtime.tv_sec);
761 mtx_unlock(&np->n_mtx);
769 * Get postop attributes.
772 nfscl_postop_attr(struct nfsrv_descript *nd, struct nfsvattr *nap, int *retp,
779 if (nd->nd_flag & ND_NOMOREDATA)
781 if (nd->nd_flag & ND_NFSV3) {
782 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
783 *retp = fxdr_unsigned(int, *tl);
784 } else if (nd->nd_flag & ND_NFSV4) {
786 * For NFSv4, the postop attr are at the end, so no point
787 * in looking if nd_repstat != 0.
789 if (!nd->nd_repstat) {
790 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
792 /* should never happen since nd_repstat != 0 */
793 nd->nd_flag |= ND_NOMOREDATA;
797 } else if (!nd->nd_repstat) {
798 /* For NFSv2, the attributes are here iff nd_repstat == 0 */
802 error = nfsm_loadattr(nd, nap);
811 * Fill in the setable attributes. The full argument indicates whether
812 * to fill in them all or just mode and time.
815 nfscl_fillsattr(struct nfsrv_descript *nd, struct vattr *vap,
816 struct vnode *vp, int flags, u_int32_t rdev)
819 struct nfsv2_sattr *sp;
820 nfsattrbit_t attrbits;
822 switch (nd->nd_flag & (ND_NFSV2 | ND_NFSV3 | ND_NFSV4)) {
824 NFSM_BUILD(sp, struct nfsv2_sattr *, NFSX_V2SATTR);
825 if (vap->va_mode == (mode_t)VNOVAL)
826 sp->sa_mode = newnfs_xdrneg1;
828 sp->sa_mode = vtonfsv2_mode(vap->va_type, vap->va_mode);
829 if (vap->va_uid == (uid_t)VNOVAL)
830 sp->sa_uid = newnfs_xdrneg1;
832 sp->sa_uid = txdr_unsigned(vap->va_uid);
833 if (vap->va_gid == (gid_t)VNOVAL)
834 sp->sa_gid = newnfs_xdrneg1;
836 sp->sa_gid = txdr_unsigned(vap->va_gid);
837 if (flags & NFSSATTR_SIZE0)
839 else if (flags & NFSSATTR_SIZENEG1)
840 sp->sa_size = newnfs_xdrneg1;
841 else if (flags & NFSSATTR_SIZERDEV)
842 sp->sa_size = txdr_unsigned(rdev);
844 sp->sa_size = txdr_unsigned(vap->va_size);
845 txdr_nfsv2time(&vap->va_atime, &sp->sa_atime);
846 txdr_nfsv2time(&vap->va_mtime, &sp->sa_mtime);
849 if (vap->va_mode != (mode_t)VNOVAL) {
850 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
852 *tl = txdr_unsigned(vap->va_mode);
854 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
857 if ((flags & NFSSATTR_FULL) && vap->va_uid != (uid_t)VNOVAL) {
858 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
860 *tl = txdr_unsigned(vap->va_uid);
862 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
865 if ((flags & NFSSATTR_FULL) && vap->va_gid != (gid_t)VNOVAL) {
866 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
868 *tl = txdr_unsigned(vap->va_gid);
870 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
873 if ((flags & NFSSATTR_FULL) && vap->va_size != VNOVAL) {
874 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
876 txdr_hyper(vap->va_size, tl);
878 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
881 if (vap->va_atime.tv_sec != VNOVAL) {
882 if ((vap->va_vaflags & VA_UTIMES_NULL) == 0) {
883 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
884 *tl++ = txdr_unsigned(NFSV3SATTRTIME_TOCLIENT);
885 txdr_nfsv3time(&vap->va_atime, tl);
887 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
888 *tl = txdr_unsigned(NFSV3SATTRTIME_TOSERVER);
891 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
892 *tl = txdr_unsigned(NFSV3SATTRTIME_DONTCHANGE);
894 if (vap->va_mtime.tv_sec != VNOVAL) {
895 if ((vap->va_vaflags & VA_UTIMES_NULL) == 0) {
896 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
897 *tl++ = txdr_unsigned(NFSV3SATTRTIME_TOCLIENT);
898 txdr_nfsv3time(&vap->va_mtime, tl);
900 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
901 *tl = txdr_unsigned(NFSV3SATTRTIME_TOSERVER);
904 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
905 *tl = txdr_unsigned(NFSV3SATTRTIME_DONTCHANGE);
909 NFSZERO_ATTRBIT(&attrbits);
910 if (vap->va_mode != (mode_t)VNOVAL)
911 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_MODE);
912 if ((flags & NFSSATTR_FULL) && vap->va_uid != (uid_t)VNOVAL)
913 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_OWNER);
914 if ((flags & NFSSATTR_FULL) && vap->va_gid != (gid_t)VNOVAL)
915 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_OWNERGROUP);
916 if ((flags & NFSSATTR_FULL) && vap->va_size != VNOVAL)
917 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_SIZE);
918 if (vap->va_atime.tv_sec != VNOVAL)
919 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEACCESSSET);
920 if (vap->va_mtime.tv_sec != VNOVAL)
921 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFYSET);
922 (void) nfsv4_fillattr(nd, vp->v_mount, vp, NULL, vap, NULL, 0,
923 &attrbits, NULL, NULL, 0, 0, 0, 0, (uint64_t)0);
929 * nfscl_request() - mostly a wrapper for newnfs_request().
932 nfscl_request(struct nfsrv_descript *nd, struct vnode *vp, NFSPROC_T *p,
933 struct ucred *cred, void *stuff)
936 struct nfsmount *nmp;
938 nmp = VFSTONFS(vp->v_mount);
939 if (nd->nd_flag & ND_NFSV4)
941 else if (nd->nd_flag & ND_NFSV3)
945 ret = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred,
946 NFS_PROG, vers, NULL, 1, NULL, NULL);
951 * fill in this bsden's variant of statfs using nfsstatfs.
954 nfscl_loadsbinfo(struct nfsmount *nmp, struct nfsstatfs *sfp, void *statfs)
956 struct statfs *sbp = (struct statfs *)statfs;
958 if (nmp->nm_flag & (NFSMNT_NFSV3 | NFSMNT_NFSV4)) {
959 sbp->f_bsize = NFS_FABLKSIZE;
960 sbp->f_blocks = sfp->sf_tbytes / NFS_FABLKSIZE;
961 sbp->f_bfree = sfp->sf_fbytes / NFS_FABLKSIZE;
963 * Although sf_abytes is uint64_t and f_bavail is int64_t,
964 * the value after dividing by NFS_FABLKSIZE is small
965 * enough that it will fit in 63bits, so it is ok to
966 * assign it to f_bavail without fear that it will become
969 sbp->f_bavail = sfp->sf_abytes / NFS_FABLKSIZE;
970 sbp->f_files = sfp->sf_tfiles;
971 /* Since f_ffree is int64_t, clip it to 63bits. */
972 if (sfp->sf_ffiles > INT64_MAX)
973 sbp->f_ffree = INT64_MAX;
975 sbp->f_ffree = sfp->sf_ffiles;
976 } else if ((nmp->nm_flag & NFSMNT_NFSV4) == 0) {
978 * The type casts to (int32_t) ensure that this code is
979 * compatible with the old NFS client, in that it will
980 * propagate bit31 to the high order bits. This may or may
981 * not be correct for NFSv2, but since it is a legacy
982 * environment, I'd rather retain backwards compatibility.
984 sbp->f_bsize = (int32_t)sfp->sf_bsize;
985 sbp->f_blocks = (int32_t)sfp->sf_blocks;
986 sbp->f_bfree = (int32_t)sfp->sf_bfree;
987 sbp->f_bavail = (int32_t)sfp->sf_bavail;
994 * Use the fsinfo stuff to update the mount point.
997 nfscl_loadfsinfo(struct nfsmount *nmp, struct nfsfsinfo *fsp)
1000 if ((nmp->nm_wsize == 0 || fsp->fs_wtpref < nmp->nm_wsize) &&
1001 fsp->fs_wtpref >= NFS_FABLKSIZE)
1002 nmp->nm_wsize = (fsp->fs_wtpref + NFS_FABLKSIZE - 1) &
1003 ~(NFS_FABLKSIZE - 1);
1004 if (fsp->fs_wtmax < nmp->nm_wsize && fsp->fs_wtmax > 0) {
1005 nmp->nm_wsize = fsp->fs_wtmax & ~(NFS_FABLKSIZE - 1);
1006 if (nmp->nm_wsize == 0)
1007 nmp->nm_wsize = fsp->fs_wtmax;
1009 if (nmp->nm_wsize < NFS_FABLKSIZE)
1010 nmp->nm_wsize = NFS_FABLKSIZE;
1011 if ((nmp->nm_rsize == 0 || fsp->fs_rtpref < nmp->nm_rsize) &&
1012 fsp->fs_rtpref >= NFS_FABLKSIZE)
1013 nmp->nm_rsize = (fsp->fs_rtpref + NFS_FABLKSIZE - 1) &
1014 ~(NFS_FABLKSIZE - 1);
1015 if (fsp->fs_rtmax < nmp->nm_rsize && fsp->fs_rtmax > 0) {
1016 nmp->nm_rsize = fsp->fs_rtmax & ~(NFS_FABLKSIZE - 1);
1017 if (nmp->nm_rsize == 0)
1018 nmp->nm_rsize = fsp->fs_rtmax;
1020 if (nmp->nm_rsize < NFS_FABLKSIZE)
1021 nmp->nm_rsize = NFS_FABLKSIZE;
1022 if ((nmp->nm_readdirsize == 0 || fsp->fs_dtpref < nmp->nm_readdirsize)
1023 && fsp->fs_dtpref >= NFS_DIRBLKSIZ)
1024 nmp->nm_readdirsize = (fsp->fs_dtpref + NFS_DIRBLKSIZ - 1) &
1025 ~(NFS_DIRBLKSIZ - 1);
1026 if (fsp->fs_rtmax < nmp->nm_readdirsize && fsp->fs_rtmax > 0) {
1027 nmp->nm_readdirsize = fsp->fs_rtmax & ~(NFS_DIRBLKSIZ - 1);
1028 if (nmp->nm_readdirsize == 0)
1029 nmp->nm_readdirsize = fsp->fs_rtmax;
1031 if (nmp->nm_readdirsize < NFS_DIRBLKSIZ)
1032 nmp->nm_readdirsize = NFS_DIRBLKSIZ;
1033 if (fsp->fs_maxfilesize > 0 &&
1034 fsp->fs_maxfilesize < nmp->nm_maxfilesize)
1035 nmp->nm_maxfilesize = fsp->fs_maxfilesize;
1036 nmp->nm_mountp->mnt_stat.f_iosize = newnfs_iosize(nmp);
1037 nmp->nm_state |= NFSSTA_GOTFSINFO;
1041 * Get a pointer to my IP addrress and return it.
1042 * Return NULL if you can't find one.
1045 nfscl_getmyip(struct nfsmount *nmp, int *isinet6p)
1047 struct sockaddr_in sad, *sin;
1049 u_int8_t *retp = NULL;
1050 static struct in_addr laddr;
1054 * Loop up a route for the destination address.
1056 if (nmp->nm_nam->sa_family == AF_INET) {
1057 bzero(&sad, sizeof (sad));
1058 sin = (struct sockaddr_in *)nmp->nm_nam;
1059 sad.sin_family = AF_INET;
1060 sad.sin_len = sizeof (struct sockaddr_in);
1061 sad.sin_addr.s_addr = sin->sin_addr.s_addr;
1062 CURVNET_SET(CRED_TO_VNET(nmp->nm_sockreq.nr_cred));
1063 rt = rtalloc1_fib((struct sockaddr *)&sad, 0, 0UL,
1064 curthread->td_proc->p_fibnum);
1066 if (rt->rt_ifp != NULL &&
1067 rt->rt_ifa != NULL &&
1068 ((rt->rt_ifp->if_flags & IFF_LOOPBACK) == 0) &&
1069 rt->rt_ifa->ifa_addr->sa_family == AF_INET) {
1070 sin = (struct sockaddr_in *)
1071 rt->rt_ifa->ifa_addr;
1072 laddr.s_addr = sin->sin_addr.s_addr;
1073 retp = (u_int8_t *)&laddr;
1079 } else if (nmp->nm_nam->sa_family == AF_INET6) {
1080 struct sockaddr_in6 sad6, *sin6;
1081 static struct in6_addr laddr6;
1083 bzero(&sad6, sizeof (sad6));
1084 sin6 = (struct sockaddr_in6 *)nmp->nm_nam;
1085 sad6.sin6_family = AF_INET6;
1086 sad6.sin6_len = sizeof (struct sockaddr_in6);
1087 sad6.sin6_addr = sin6->sin6_addr;
1088 CURVNET_SET(CRED_TO_VNET(nmp->nm_sockreq.nr_cred));
1089 rt = rtalloc1_fib((struct sockaddr *)&sad6, 0, 0UL,
1090 curthread->td_proc->p_fibnum);
1092 if (rt->rt_ifp != NULL &&
1093 rt->rt_ifa != NULL &&
1094 ((rt->rt_ifp->if_flags & IFF_LOOPBACK) == 0) &&
1095 rt->rt_ifa->ifa_addr->sa_family == AF_INET6) {
1096 sin6 = (struct sockaddr_in6 *)
1097 rt->rt_ifa->ifa_addr;
1098 laddr6 = sin6->sin6_addr;
1099 retp = (u_int8_t *)&laddr6;
1111 * Copy NFS uid, gids from the cred structure.
1114 newnfs_copyincred(struct ucred *cr, struct nfscred *nfscr)
1118 KASSERT(cr->cr_ngroups >= 0,
1119 ("newnfs_copyincred: negative cr_ngroups"));
1120 nfscr->nfsc_uid = cr->cr_uid;
1121 nfscr->nfsc_ngroups = MIN(cr->cr_ngroups, NFS_MAXGRPS + 1);
1122 for (i = 0; i < nfscr->nfsc_ngroups; i++)
1123 nfscr->nfsc_groups[i] = cr->cr_groups[i];
1128 * Do any client specific initialization.
1133 static int inited = 0;
1139 ncl_pbuf_freecnt = nswbuf / 2 + 1;
1143 * Check each of the attributes to be set, to ensure they aren't already
1144 * the correct value. Disable setting ones already correct.
1147 nfscl_checksattr(struct vattr *vap, struct nfsvattr *nvap)
1150 if (vap->va_mode != (mode_t)VNOVAL) {
1151 if (vap->va_mode == nvap->na_mode)
1152 vap->va_mode = (mode_t)VNOVAL;
1154 if (vap->va_uid != (uid_t)VNOVAL) {
1155 if (vap->va_uid == nvap->na_uid)
1156 vap->va_uid = (uid_t)VNOVAL;
1158 if (vap->va_gid != (gid_t)VNOVAL) {
1159 if (vap->va_gid == nvap->na_gid)
1160 vap->va_gid = (gid_t)VNOVAL;
1162 if (vap->va_size != VNOVAL) {
1163 if (vap->va_size == nvap->na_size)
1164 vap->va_size = VNOVAL;
1168 * We are normally called with only a partially initialized
1169 * VAP. Since the NFSv3 spec says that server may use the
1170 * file attributes to store the verifier, the spec requires
1171 * us to do a SETATTR RPC. FreeBSD servers store the verifier
1172 * in atime, but we can't really assume that all servers will
1173 * so we ensure that our SETATTR sets both atime and mtime.
1174 * Set the VA_UTIMES_NULL flag for this case, so that
1175 * the server's time will be used. This is needed to
1176 * work around a bug in some Solaris servers, where
1177 * setting the time TOCLIENT causes the Setattr RPC
1178 * to return NFS_OK, but not set va_mode.
1180 if (vap->va_mtime.tv_sec == VNOVAL) {
1181 vfs_timestamp(&vap->va_mtime);
1182 vap->va_vaflags |= VA_UTIMES_NULL;
1184 if (vap->va_atime.tv_sec == VNOVAL)
1185 vap->va_atime = vap->va_mtime;
1190 * Map nfsv4 errors to errno.h errors.
1191 * The uid and gid arguments are only used for NFSERR_BADOWNER and that
1192 * error should only be returned for the Open, Create and Setattr Ops.
1193 * As such, most calls can just pass in 0 for those arguments.
1196 nfscl_maperr(struct thread *td, int error, uid_t uid, gid_t gid)
1207 case NFSERR_BADOWNER:
1208 tprintf(p, LOG_INFO,
1209 "No name and/or group mapping for uid,gid:(%d,%d)\n",
1212 case NFSERR_BADNAME:
1213 case NFSERR_BADCHAR:
1214 printf("nfsv4 char/name not handled by server\n");
1216 case NFSERR_STALECLIENTID:
1217 case NFSERR_STALESTATEID:
1218 case NFSERR_EXPIRED:
1219 case NFSERR_BADSTATEID:
1220 case NFSERR_BADSESSION:
1221 printf("nfsv4 recover err returned %d\n", error);
1223 case NFSERR_BADHANDLE:
1224 case NFSERR_SERVERFAULT:
1225 case NFSERR_BADTYPE:
1226 case NFSERR_FHEXPIRED:
1227 case NFSERR_RESOURCE:
1229 case NFSERR_NOFILEHANDLE:
1230 case NFSERR_MINORVERMISMATCH:
1231 case NFSERR_OLDSTATEID:
1232 case NFSERR_BADSEQID:
1233 case NFSERR_LEASEMOVED:
1234 case NFSERR_RECLAIMBAD:
1236 case NFSERR_OPILLEGAL:
1237 printf("nfsv4 client/server protocol prob err=%d\n",
1241 tprintf(p, LOG_INFO, "nfsv4 err=%d\n", error);
1247 * Check to see if the process for this owner exists. Return 1 if it doesn't
1251 nfscl_procdoesntexist(u_int8_t *own)
1261 tl.cval[0] = *own++;
1262 tl.cval[1] = *own++;
1263 tl.cval[2] = *own++;
1264 tl.cval[3] = *own++;
1266 p = pfind_locked(pid);
1269 if (p->p_stats == NULL) {
1273 tl.cval[0] = *own++;
1274 tl.cval[1] = *own++;
1275 tl.cval[2] = *own++;
1276 tl.cval[3] = *own++;
1277 if (tl.lval != p->p_stats->p_start.tv_sec) {
1280 tl.cval[0] = *own++;
1281 tl.cval[1] = *own++;
1282 tl.cval[2] = *own++;
1284 if (tl.lval != p->p_stats->p_start.tv_usec)
1292 * - nfs pseudo system call for the client
1298 nfssvc_nfscl(struct thread *td, struct nfssvc_args *uap)
1301 struct nfscbd_args nfscbdarg;
1302 struct nfsd_nfscbd_args nfscbdarg2;
1303 struct nameidata nd;
1304 struct nfscl_dumpmntopts dumpmntopts;
1305 cap_rights_t rights;
1309 if (uap->flag & NFSSVC_CBADDSOCK) {
1310 error = copyin(uap->argp, (caddr_t)&nfscbdarg, sizeof(nfscbdarg));
1314 * Since we don't know what rights might be required,
1315 * pretend that we need them all. It is better to be too
1316 * careful than too reckless.
1318 error = fget(td, nfscbdarg.sock,
1319 cap_rights_init(&rights, CAP_SOCK_CLIENT), &fp);
1322 if (fp->f_type != DTYPE_SOCKET) {
1326 error = nfscbd_addsock(fp);
1328 if (!error && nfscl_enablecallb == 0) {
1329 nfsv4_cbport = nfscbdarg.port;
1330 nfscl_enablecallb = 1;
1332 } else if (uap->flag & NFSSVC_NFSCBD) {
1333 if (uap->argp == NULL)
1335 error = copyin(uap->argp, (caddr_t)&nfscbdarg2,
1336 sizeof(nfscbdarg2));
1339 error = nfscbd_nfsd(td, &nfscbdarg2);
1340 } else if (uap->flag & NFSSVC_DUMPMNTOPTS) {
1341 error = copyin(uap->argp, &dumpmntopts, sizeof(dumpmntopts));
1342 if (error == 0 && (dumpmntopts.ndmnt_blen < 256 ||
1343 dumpmntopts.ndmnt_blen > 1024))
1346 error = nfsrv_lookupfilename(&nd,
1347 dumpmntopts.ndmnt_fname, td);
1348 if (error == 0 && strcmp(nd.ni_vp->v_mount->mnt_vfc->vfc_name,
1354 buf = malloc(dumpmntopts.ndmnt_blen, M_TEMP, M_WAITOK);
1355 nfscl_retopts(VFSTONFS(nd.ni_vp->v_mount), buf,
1356 dumpmntopts.ndmnt_blen);
1358 error = copyout(buf, dumpmntopts.ndmnt_buf,
1359 dumpmntopts.ndmnt_blen);
1368 extern int (*nfsd_call_nfscl)(struct thread *, struct nfssvc_args *);
1371 * Called once to initialize data structures...
1374 nfscl_modevent(module_t mod, int type, void *data)
1377 static int loaded = 0;
1384 mtx_init(&nfs_clstate_mutex, "nfs_clstate_mutex", NULL,
1386 mtx_init(&ncl_iod_mutex, "ncl_iod_mutex", NULL, MTX_DEF);
1391 ncl_call_invalcaches = ncl_invalcaches;
1392 nfsd_call_nfscl = nfssvc_nfscl;
1397 if (nfs_numnfscbd != 0) {
1403 * XXX: Unloading of nfscl module is unsupported.
1406 ncl_call_invalcaches = NULL;
1407 nfsd_call_nfscl = NULL;
1408 /* and get rid of the mutexes */
1409 mtx_destroy(&nfs_clstate_mutex);
1410 mtx_destroy(&ncl_iod_mutex);
1422 static moduledata_t nfscl_mod = {
1427 DECLARE_MODULE(nfscl, nfscl_mod, SI_SUB_VFS, SI_ORDER_FIRST);
1429 /* So that loader and kldload(2) can find us, wherever we are.. */
1430 MODULE_VERSION(nfscl, 1);
1431 MODULE_DEPEND(nfscl, nfscommon, 1, 1, 1);
1432 MODULE_DEPEND(nfscl, krpc, 1, 1, 1);
1433 MODULE_DEPEND(nfscl, nfssvc, 1, 1, 1);
1434 MODULE_DEPEND(nfscl, nfslock, 1, 1, 1);