1/*- 2 * Copyright (c) 1989, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Rick Macklem at The University of Guelph. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 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. 19 * 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 30 * SUCH DAMAGE. 31 * 32 */ 33 34#include <sys/cdefs.h> 35__FBSDID("$FreeBSD$"); 36 37/* 38 * Functions that need to be different for different versions of BSD 39 * kernel should be kept here, along with any global storage specific 40 * to this BSD variant. 41 */ 42#include <fs/nfs/nfsport.h> 43#include <sys/sysctl.h> 44#include <vm/vm.h> 45#include <vm/vm_object.h> 46#include <vm/vm_page.h> 47#include <vm/vm_param.h> 48#include <vm/vm_map.h> 49#include <vm/vm_kern.h> 50#include <vm/vm_extern.h> 51#include <vm/uma.h> 52 53extern int nfscl_ticks; 54extern int nfsrv_nfsuserd; 55extern struct nfssockreq nfsrv_nfsuserdsock; 56extern void (*nfsd_call_recall)(struct vnode *, int, struct ucred *, 57 struct thread *); 58extern int nfsrv_useacl; 59struct mount nfsv4root_mnt; 60int newnfs_numnfsd = 0; 61struct nfsstats newnfsstats; 62int nfs_numnfscbd = 0; 63int nfscl_debuglevel = 0; 64char nfsv4_callbackaddr[INET6_ADDRSTRLEN]; 65struct callout newnfsd_callout; 66void (*nfsd_call_servertimer)(void) = NULL; 67void (*ncl_call_invalcaches)(struct vnode *) = NULL; 68 69static int nfs_realign_test; 70static int nfs_realign_count; 71 72SYSCTL_NODE(_vfs, OID_AUTO, nfs, CTLFLAG_RW, 0, "New NFS filesystem"); 73SYSCTL_INT(_vfs_nfs, OID_AUTO, realign_test, CTLFLAG_RW, &nfs_realign_test, 74 0, "Number of realign tests done"); 75SYSCTL_INT(_vfs_nfs, OID_AUTO, realign_count, CTLFLAG_RW, &nfs_realign_count, 76 0, "Number of mbuf realignments done"); 77SYSCTL_STRING(_vfs_nfs, OID_AUTO, callback_addr, CTLFLAG_RW, 78 nfsv4_callbackaddr, sizeof(nfsv4_callbackaddr), 79 "NFSv4 callback addr for server to use"); 80SYSCTL_INT(_vfs_nfs, OID_AUTO, debuglevel, CTLFLAG_RW, &nfscl_debuglevel, 81 0, "Debug level for new nfs client"); 82 83/* 84 * Defines for malloc 85 * (Here for FreeBSD, since they allocate storage.) 86 */ 87MALLOC_DEFINE(M_NEWNFSRVCACHE, "NFSD srvcache", "NFSD Server Request Cache"); 88MALLOC_DEFINE(M_NEWNFSDCLIENT, "NFSD V4client", "NFSD V4 Client Id"); 89MALLOC_DEFINE(M_NEWNFSDSTATE, "NFSD V4state", 90 "NFSD V4 State (Openowner, Open, Lockowner, Delegation"); 91MALLOC_DEFINE(M_NEWNFSDLOCK, "NFSD V4lock", "NFSD V4 byte range lock"); 92MALLOC_DEFINE(M_NEWNFSDLOCKFILE, "NFSD lckfile", "NFSD Open/Lock file"); 93MALLOC_DEFINE(M_NEWNFSSTRING, "NFSD string", "NFSD V4 long string"); 94MALLOC_DEFINE(M_NEWNFSUSERGROUP, "NFSD usrgroup", "NFSD V4 User/group map"); 95MALLOC_DEFINE(M_NEWNFSDREQ, "NFS req", "NFS request header"); 96MALLOC_DEFINE(M_NEWNFSFH, "NFS fh", "NFS file handle"); 97MALLOC_DEFINE(M_NEWNFSCLOWNER, "NFSCL owner", "NFSCL Open Owner"); 98MALLOC_DEFINE(M_NEWNFSCLOPEN, "NFSCL open", "NFSCL Open"); 99MALLOC_DEFINE(M_NEWNFSCLDELEG, "NFSCL deleg", "NFSCL Delegation"); 100MALLOC_DEFINE(M_NEWNFSCLCLIENT, "NFSCL client", "NFSCL Client"); 101MALLOC_DEFINE(M_NEWNFSCLLOCKOWNER, "NFSCL lckown", "NFSCL Lock Owner"); 102MALLOC_DEFINE(M_NEWNFSCLLOCK, "NFSCL lck", "NFSCL Lock"); 103MALLOC_DEFINE(M_NEWNFSV4NODE, "NEWNFSnode", "New nfs vnode"); 104MALLOC_DEFINE(M_NEWNFSDIRECTIO, "NEWdirectio", "New nfs Direct IO buffer"); 105MALLOC_DEFINE(M_NEWNFSDIROFF, "NFSCL diroffdiroff", 106 "New NFS directory offset data"); 107MALLOC_DEFINE(M_NEWNFSDROLLBACK, "NFSD rollback", 108 "New NFS local lock rollback"); 109MALLOC_DEFINE(M_NEWNFSLAYOUT, "NFSCL layout", "NFSv4.1 Layout"); 110MALLOC_DEFINE(M_NEWNFSFLAYOUT, "NFSCL flayout", "NFSv4.1 File Layout"); 111MALLOC_DEFINE(M_NEWNFSDEVINFO, "NFSCL devinfo", "NFSv4.1 Device Info"); 112MALLOC_DEFINE(M_NEWNFSSOCKREQ, "NFSCL sockreq", "NFS Sock Req"); 113MALLOC_DEFINE(M_NEWNFSCLDS, "NFSCL session", "NFSv4.1 Session"); 114MALLOC_DEFINE(M_NEWNFSLAYRECALL, "NFSCL layrecall", "NFSv4.1 Layout Recall"); 115 116/* 117 * Definition of mutex locks. 118 * newnfsd_mtx is used in nfsrvd_nfsd() to protect the nfs socket list 119 * and assorted other nfsd structures. 120 */ 121struct mtx newnfsd_mtx; 122struct mtx nfs_sockl_mutex; 123struct mtx nfs_state_mutex; 124struct mtx nfs_nameid_mutex; 125struct mtx nfs_req_mutex; 126struct mtx nfs_slock_mutex; 127 128/* local functions */ 129static int nfssvc_call(struct thread *, struct nfssvc_args *, struct ucred *); 130 131#ifdef __NO_STRICT_ALIGNMENT 132/* 133 * These architectures don't need re-alignment, so just return. 134 */ 135int 136newnfs_realign(struct mbuf **pm, int how) 137{ 138 139 return (0); 140} 141#else /* !__NO_STRICT_ALIGNMENT */ 142/* 143 * newnfs_realign: 144 * 145 * Check for badly aligned mbuf data and realign by copying the unaligned 146 * portion of the data into a new mbuf chain and freeing the portions 147 * of the old chain that were replaced. 148 * 149 * We cannot simply realign the data within the existing mbuf chain 150 * because the underlying buffers may contain other rpc commands and 151 * we cannot afford to overwrite them. 152 * 153 * We would prefer to avoid this situation entirely. The situation does 154 * not occur with NFS/UDP and is supposed to only occassionally occur 155 * with TCP. Use vfs.nfs.realign_count and realign_test to check this. 156 * 157 */ 158int 159newnfs_realign(struct mbuf **pm, int how) 160{ 161 struct mbuf *m, *n; 162 int off, space; 163 164 ++nfs_realign_test; 165 while ((m = *pm) != NULL) { 166 if ((m->m_len & 0x3) || (mtod(m, intptr_t) & 0x3)) { 167 /* 168 * NB: we can't depend on m_pkthdr.len to help us 169 * decide what to do here. May not be worth doing 170 * the m_length calculation as m_copyback will 171 * expand the mbuf chain below as needed. 172 */ 173 space = m_length(m, NULL); 174 if (space >= MINCLSIZE) { 175 /* NB: m_copyback handles space > MCLBYTES */ 176 n = m_getcl(how, MT_DATA, 0); 177 } else 178 n = m_get(how, MT_DATA); 179 if (n == NULL) 180 return (ENOMEM); 181 /* 182 * Align the remainder of the mbuf chain. 183 */ 184 n->m_len = 0; 185 off = 0; 186 while (m != NULL) { 187 m_copyback(n, off, m->m_len, mtod(m, caddr_t)); 188 off += m->m_len; 189 m = m->m_next; 190 } 191 m_freem(*pm); 192 *pm = n; 193 ++nfs_realign_count; 194 break; 195 } 196 pm = &m->m_next; 197 } 198 199 return (0); 200} 201#endif /* __NO_STRICT_ALIGNMENT */ 202 203#ifdef notdef 204static void 205nfsrv_object_create(struct vnode *vp, struct thread *td) 206{ 207 208 if (vp == NULL || vp->v_type != VREG) 209 return; 210 (void) vfs_object_create(vp, td, td->td_ucred); 211} 212#endif 213 214/* 215 * Look up a file name. Basically just initialize stuff and call namei(). 216 */ 217int 218nfsrv_lookupfilename(struct nameidata *ndp, char *fname, NFSPROC_T *p) 219{ 220 int error; 221 222 NDINIT(ndp, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, fname, 223 p); 224 error = namei(ndp); 225 if (!error) { 226 NDFREE(ndp, NDF_ONLY_PNBUF); 227 } 228 return (error); 229} 230 231/* 232 * Copy NFS uid, gids to the cred structure. 233 */ 234void 235newnfs_copycred(struct nfscred *nfscr, struct ucred *cr) 236{ 237 238 KASSERT(nfscr->nfsc_ngroups >= 0, 239 ("newnfs_copycred: negative nfsc_ngroups")); 240 cr->cr_uid = nfscr->nfsc_uid; 241 crsetgroups(cr, nfscr->nfsc_ngroups, nfscr->nfsc_groups); 242} 243 244/* 245 * Map args from nfsmsleep() to msleep(). 246 */ 247int 248nfsmsleep(void *chan, void *mutex, int prio, const char *wmesg, 249 struct timespec *ts) 250{ 251 u_int64_t nsecval; 252 int error, timeo; 253 254 if (ts) { 255 timeo = hz * ts->tv_sec; 256 nsecval = (u_int64_t)ts->tv_nsec; 257 nsecval = ((nsecval * ((u_int64_t)hz)) + 500000000) / 258 1000000000; 259 timeo += (int)nsecval; 260 } else { 261 timeo = 0; 262 } 263 error = msleep(chan, (struct mtx *)mutex, prio, wmesg, timeo); 264 return (error); 265} 266 267/* 268 * Get the file system info for the server. For now, just assume FFS. 269 */ 270void 271nfsvno_getfs(struct nfsfsinfo *sip, int isdgram) 272{ 273 int pref; 274 275 /* 276 * XXX 277 * There should be file system VFS OP(s) to get this information. 278 * For now, assume ufs. 279 */ 280 if (isdgram) 281 pref = NFS_MAXDGRAMDATA; 282 else 283 pref = NFS_MAXDATA; 284 sip->fs_rtmax = NFS_MAXDATA; 285 sip->fs_rtpref = pref; 286 sip->fs_rtmult = NFS_FABLKSIZE; 287 sip->fs_wtmax = NFS_MAXDATA; 288 sip->fs_wtpref = pref; 289 sip->fs_wtmult = NFS_FABLKSIZE; 290 sip->fs_dtpref = pref; 291 sip->fs_maxfilesize = 0xffffffffffffffffull; 292 sip->fs_timedelta.tv_sec = 0; 293 sip->fs_timedelta.tv_nsec = 1; 294 sip->fs_properties = (NFSV3FSINFO_LINK | 295 NFSV3FSINFO_SYMLINK | NFSV3FSINFO_HOMOGENEOUS | 296 NFSV3FSINFO_CANSETTIME); 297} 298 299/* 300 * Do the pathconf vnode op. 301 */ 302int 303nfsvno_pathconf(struct vnode *vp, int flag, register_t *retf, 304 struct ucred *cred, struct thread *p) 305{ 306 int error; 307 308 error = VOP_PATHCONF(vp, flag, retf); 309 if (error == EOPNOTSUPP || error == EINVAL) { 310 /* 311 * Some file systems return EINVAL for name arguments not 312 * supported and some return EOPNOTSUPP for this case. 313 * So the NFSv3 Pathconf RPC doesn't fail for these cases, 314 * just fake them. 315 */ 316 switch (flag) { 317 case _PC_LINK_MAX: 318 *retf = LINK_MAX; 319 break; 320 case _PC_NAME_MAX: 321 *retf = NAME_MAX; 322 break; 323 case _PC_CHOWN_RESTRICTED: 324 *retf = 1; 325 break; 326 case _PC_NO_TRUNC: 327 *retf = 1; 328 break; 329 default: 330 /* 331 * Only happens if a _PC_xxx is added to the server, 332 * but this isn't updated. 333 */ 334 *retf = 0; 335 printf("nfsrvd pathconf flag=%d not supp\n", flag); 336 }; 337 error = 0; 338 } 339 NFSEXITCODE(error); 340 return (error); 341} 342 343/* Fake nfsrv_atroot. Just return 0 */ 344int 345nfsrv_atroot(struct vnode *vp, long *retp) 346{ 347 348 return (0); 349} 350 351/* 352 * Set the credentials to refer to root. 353 * If only the various BSDen could agree on whether cr_gid is a separate 354 * field or cr_groups[0]... 355 */ 356void 357newnfs_setroot(struct ucred *cred) 358{ 359 360 cred->cr_uid = 0; 361 cred->cr_groups[0] = 0; 362 cred->cr_ngroups = 1; 363} 364 365/* 366 * Get the client credential. Used for Renew and recovery. 367 */ 368struct ucred * 369newnfs_getcred(void) 370{ 371 struct ucred *cred; 372 struct thread *td = curthread; 373 374 cred = crdup(td->td_ucred); 375 newnfs_setroot(cred); 376 return (cred); 377} 378 379/* 380 * Nfs timer routine 381 * Call the nfsd's timer function once/sec. 382 */ 383void 384newnfs_timer(void *arg) 385{ 386 static time_t lasttime = 0; 387 /* 388 * Call the server timer, if set up. 389 * The argument indicates if it is the next second and therefore 390 * leases should be checked. 391 */ 392 if (lasttime != NFSD_MONOSEC) { 393 lasttime = NFSD_MONOSEC; 394 if (nfsd_call_servertimer != NULL) 395 (*nfsd_call_servertimer)(); 396 } 397 callout_reset(&newnfsd_callout, nfscl_ticks, newnfs_timer, NULL); 398} 399 400 401/* 402 * Sleep for a short period of time unless errval == NFSERR_GRACE, where 403 * the sleep should be for 5 seconds. 404 * Since lbolt doesn't exist in FreeBSD-CURRENT, just use a timeout on 405 * an event that never gets a wakeup. Only return EINTR or 0. 406 */ 407int 408nfs_catnap(int prio, int errval, const char *wmesg) 409{ 410 static int non_event; 411 int ret; 412 413 if (errval == NFSERR_GRACE) 414 ret = tsleep(&non_event, prio, wmesg, 5 * hz); 415 else 416 ret = tsleep(&non_event, prio, wmesg, 1); 417 if (ret != EINTR) 418 ret = 0; 419 return (ret); 420} 421 422/* 423 * Get referral. For now, just fail. 424 */ 425struct nfsreferral * 426nfsv4root_getreferral(struct vnode *vp, struct vnode *dvp, u_int32_t fileno) 427{ 428 429 return (NULL); 430} 431 432static int 433nfssvc_nfscommon(struct thread *td, struct nfssvc_args *uap) 434{ 435 int error; 436 437 error = nfssvc_call(td, uap, td->td_ucred); 438 NFSEXITCODE(error); 439 return (error); 440} 441 442static int 443nfssvc_call(struct thread *p, struct nfssvc_args *uap, struct ucred *cred) 444{ 445 int error = EINVAL; 446 struct nfsd_idargs nid; 447 448 if (uap->flag & NFSSVC_IDNAME) { 449 error = copyin(uap->argp, (caddr_t)&nid, sizeof (nid)); 450 if (error) 451 goto out; 452 error = nfssvc_idname(&nid); 453 goto out; 454 } else if (uap->flag & NFSSVC_GETSTATS) { 455 error = copyout(&newnfsstats, 456 CAST_USER_ADDR_T(uap->argp), sizeof (newnfsstats)); 457 if (error == 0) { 458 if ((uap->flag & NFSSVC_ZEROCLTSTATS) != 0) { 459 newnfsstats.attrcache_hits = 0; 460 newnfsstats.attrcache_misses = 0; 461 newnfsstats.lookupcache_hits = 0; 462 newnfsstats.lookupcache_misses = 0; 463 newnfsstats.direofcache_hits = 0; 464 newnfsstats.direofcache_misses = 0; 465 newnfsstats.accesscache_hits = 0; 466 newnfsstats.accesscache_misses = 0; 467 newnfsstats.biocache_reads = 0; 468 newnfsstats.read_bios = 0; 469 newnfsstats.read_physios = 0; 470 newnfsstats.biocache_writes = 0; 471 newnfsstats.write_bios = 0; 472 newnfsstats.write_physios = 0; 473 newnfsstats.biocache_readlinks = 0; 474 newnfsstats.readlink_bios = 0; 475 newnfsstats.biocache_readdirs = 0; 476 newnfsstats.readdir_bios = 0; 477 newnfsstats.rpcretries = 0; 478 newnfsstats.rpcrequests = 0; 479 newnfsstats.rpctimeouts = 0; 480 newnfsstats.rpcunexpected = 0; 481 newnfsstats.rpcinvalid = 0; 482 bzero(newnfsstats.rpccnt, 483 sizeof(newnfsstats.rpccnt)); 484 } 485 if ((uap->flag & NFSSVC_ZEROSRVSTATS) != 0) { 486 newnfsstats.srvrpc_errs = 0; 487 newnfsstats.srv_errs = 0; 488 newnfsstats.srvcache_inproghits = 0; 489 newnfsstats.srvcache_idemdonehits = 0; 490 newnfsstats.srvcache_nonidemdonehits = 0; 491 newnfsstats.srvcache_misses = 0; 492 newnfsstats.srvcache_tcppeak = 0; 493 newnfsstats.srvclients = 0; 494 newnfsstats.srvopenowners = 0; 495 newnfsstats.srvopens = 0; 496 newnfsstats.srvlockowners = 0; 497 newnfsstats.srvlocks = 0; 498 newnfsstats.srvdelegates = 0; 499 newnfsstats.clopenowners = 0; 500 newnfsstats.clopens = 0; 501 newnfsstats.cllockowners = 0; 502 newnfsstats.cllocks = 0; 503 newnfsstats.cldelegates = 0; 504 newnfsstats.cllocalopenowners = 0; 505 newnfsstats.cllocalopens = 0; 506 newnfsstats.cllocallockowners = 0; 507 newnfsstats.cllocallocks = 0; 508 bzero(newnfsstats.srvrpccnt, 509 sizeof(newnfsstats.srvrpccnt)); 510 bzero(newnfsstats.cbrpccnt, 511 sizeof(newnfsstats.cbrpccnt)); 512 } 513 } 514 goto out; 515 } else if (uap->flag & NFSSVC_NFSUSERDPORT) { 516 u_short sockport; 517 518 error = copyin(uap->argp, (caddr_t)&sockport, 519 sizeof (u_short)); 520 if (!error) 521 error = nfsrv_nfsuserdport(sockport, p); 522 } else if (uap->flag & NFSSVC_NFSUSERDDELPORT) { 523 nfsrv_nfsuserddelport(); 524 error = 0; 525 } 526 527out: 528 NFSEXITCODE(error); 529 return (error); 530} 531 532/* 533 * called by all three modevent routines, so that it gets things 534 * initialized soon enough. 535 */ 536void 537newnfs_portinit(void) 538{ 539 static int inited = 0; 540 541 if (inited) 542 return; 543 inited = 1; 544 /* Initialize SMP locks used by both client and server. */ 545 mtx_init(&newnfsd_mtx, "newnfsd_mtx", NULL, MTX_DEF); 546 mtx_init(&nfs_state_mutex, "nfs_state_mutex", NULL, MTX_DEF); 547} 548 549/* 550 * Determine if the file system supports NFSv4 ACLs. 551 * Return 1 if it does, 0 otherwise. 552 */ 553int 554nfs_supportsnfsv4acls(struct vnode *vp) 555{ 556 int error; 557 register_t retval; 558 559 ASSERT_VOP_LOCKED(vp, "nfs supports nfsv4acls"); 560 561 if (nfsrv_useacl == 0) 562 return (0); 563 error = VOP_PATHCONF(vp, _PC_ACL_NFS4, &retval); 564 if (error == 0 && retval != 0) 565 return (1); 566 return (0); 567} 568 569extern int (*nfsd_call_nfscommon)(struct thread *, struct nfssvc_args *); 570 571/* 572 * Called once to initialize data structures... 573 */ 574static int 575nfscommon_modevent(module_t mod, int type, void *data) 576{ 577 int error = 0; 578 static int loaded = 0; 579 580 switch (type) { 581 case MOD_LOAD: 582 if (loaded) 583 goto out; 584 newnfs_portinit(); 585 mtx_init(&nfs_nameid_mutex, "nfs_nameid_mutex", NULL, MTX_DEF); 586 mtx_init(&nfs_sockl_mutex, "nfs_sockl_mutex", NULL, MTX_DEF); 587 mtx_init(&nfs_slock_mutex, "nfs_slock_mutex", NULL, MTX_DEF); 588 mtx_init(&nfs_req_mutex, "nfs_req_mutex", NULL, MTX_DEF); 589 mtx_init(&nfsrv_nfsuserdsock.nr_mtx, "nfsuserd", NULL, 590 MTX_DEF); 591 callout_init(&newnfsd_callout, CALLOUT_MPSAFE); 592 newnfs_init(); 593 nfsd_call_nfscommon = nfssvc_nfscommon; 594 loaded = 1; 595 break; 596 597 case MOD_UNLOAD: 598 if (newnfs_numnfsd != 0 || nfsrv_nfsuserd != 0 || 599 nfs_numnfscbd != 0) { 600 error = EBUSY; 601 break; 602 } 603 604 nfsd_call_nfscommon = NULL; 605 callout_drain(&newnfsd_callout); 606 /* and get rid of the mutexes */ 607 mtx_destroy(&nfs_nameid_mutex); 608 mtx_destroy(&newnfsd_mtx); 609 mtx_destroy(&nfs_state_mutex); 610 mtx_destroy(&nfs_sockl_mutex); 611 mtx_destroy(&nfs_slock_mutex); 612 mtx_destroy(&nfs_req_mutex); 613 mtx_destroy(&nfsrv_nfsuserdsock.nr_mtx); 614 loaded = 0; 615 break; 616 default: 617 error = EOPNOTSUPP; 618 break; 619 } 620 621out: 622 NFSEXITCODE(error); 623 return error; 624} 625static moduledata_t nfscommon_mod = { 626 "nfscommon", 627 nfscommon_modevent, 628 NULL, 629}; 630DECLARE_MODULE(nfscommon, nfscommon_mod, SI_SUB_VFS, SI_ORDER_ANY); 631 632/* So that loader and kldload(2) can find us, wherever we are.. */ 633MODULE_VERSION(nfscommon, 1); 634MODULE_DEPEND(nfscommon, nfssvc, 1, 1, 1); 635MODULE_DEPEND(nfscommon, krpc, 1, 1, 1); 636 637