Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/fs/nfs/nfs_commonport.c
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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: releng/8.4/sys/fs/nfs/nfs_commonport.c 241201 2012-10-04 21:55:37Z rmacklem $"); 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 #include <vm/uma_int.h> 53 54 extern int nfscl_ticks; 55 extern int nfsrv_nfsuserd; 56 extern struct nfssockreq nfsrv_nfsuserdsock; 57 extern void (*nfsd_call_recall)(struct vnode *, int, struct ucred *, 58 struct thread *); 59 extern int nfsrv_useacl; 60 struct mount nfsv4root_mnt; 61 int newnfs_numnfsd = 0; 62 struct nfsstats newnfsstats; 63 int nfs_numnfscbd = 0; 64 int nfscl_debuglevel = 0; 65 char nfsv4_callbackaddr[INET6_ADDRSTRLEN]; 66 struct callout newnfsd_callout; 67 void (*nfsd_call_servertimer)(void) = NULL; 68 void (*ncl_call_invalcaches)(struct vnode *) = NULL; 69 70 static int nfs_realign_test; 71 static int nfs_realign_count; 72 73 SYSCTL_NODE(_vfs, OID_AUTO, newnfs, CTLFLAG_RW, 0, "New NFS filesystem"); 74 SYSCTL_INT(_vfs_newnfs, OID_AUTO, realign_test, CTLFLAG_RW, &nfs_realign_test, 75 0, "Number of realign tests done"); 76 SYSCTL_INT(_vfs_newnfs, OID_AUTO, realign_count, CTLFLAG_RW, &nfs_realign_count, 77 0, "Number of mbuf realignments done"); 78 SYSCTL_INT(_vfs_newnfs, OID_AUTO, nfs4acl_enable, CTLFLAG_RW, &nfsrv_useacl, 79 0, "Enable NFSv4 ACLs"); 80 SYSCTL_STRING(_vfs_newnfs, OID_AUTO, callback_addr, CTLFLAG_RW, 81 nfsv4_callbackaddr, sizeof(nfsv4_callbackaddr), 82 "NFSv4 callback addr for server to use"); 83 SYSCTL_INT(_vfs_newnfs, OID_AUTO, debuglevel, CTLFLAG_RW, &nfscl_debuglevel, 84 0, "Debug level for new nfs client"); 85 86 /* 87 * Defines for malloc 88 * (Here for FreeBSD, since they allocate storage.) 89 */ 90 MALLOC_DEFINE(M_NEWNFSRVCACHE, "NFSD srvcache", "NFSD Server Request Cache"); 91 MALLOC_DEFINE(M_NEWNFSDCLIENT, "NFSD V4client", "NFSD V4 Client Id"); 92 MALLOC_DEFINE(M_NEWNFSDSTATE, "NFSD V4state", 93 "NFSD V4 State (Openowner, Open, Lockowner, Delegation"); 94 MALLOC_DEFINE(M_NEWNFSDLOCK, "NFSD V4lock", "NFSD V4 byte range lock"); 95 MALLOC_DEFINE(M_NEWNFSDLOCKFILE, "NFSD lckfile", "NFSD Open/Lock file"); 96 MALLOC_DEFINE(M_NEWNFSSTRING, "NFSD string", "NFSD V4 long string"); 97 MALLOC_DEFINE(M_NEWNFSUSERGROUP, "NFSD usrgroup", "NFSD V4 User/group map"); 98 MALLOC_DEFINE(M_NEWNFSDREQ, "NFS req", "NFS request header"); 99 MALLOC_DEFINE(M_NEWNFSFH, "NFS fh", "NFS file handle"); 100 MALLOC_DEFINE(M_NEWNFSCLOWNER, "NFSCL owner", "NFSCL Open Owner"); 101 MALLOC_DEFINE(M_NEWNFSCLOPEN, "NFSCL open", "NFSCL Open"); 102 MALLOC_DEFINE(M_NEWNFSCLDELEG, "NFSCL deleg", "NFSCL Delegation"); 103 MALLOC_DEFINE(M_NEWNFSCLCLIENT, "NFSCL client", "NFSCL Client"); 104 MALLOC_DEFINE(M_NEWNFSCLLOCKOWNER, "NFSCL lckown", "NFSCL Lock Owner"); 105 MALLOC_DEFINE(M_NEWNFSCLLOCK, "NFSCL lck", "NFSCL Lock"); 106 MALLOC_DEFINE(M_NEWNFSV4NODE, "NEWNFSnode", "New nfs vnode"); 107 MALLOC_DEFINE(M_NEWNFSDIRECTIO, "NEWdirectio", "New nfs Direct IO buffer"); 108 MALLOC_DEFINE(M_NEWNFSDIROFF, "NFSCL diroffdiroff", 109 "New NFS directory offset data"); 110 MALLOC_DEFINE(M_NEWNFSDROLLBACK, "NFSD rollback", 111 "New NFS local lock rollback"); 112 113 /* 114 * Definition of mutex locks. 115 * newnfsd_mtx is used in nfsrvd_nfsd() to protect the nfs socket list 116 * and assorted other nfsd structures. 117 */ 118 struct mtx newnfsd_mtx; 119 struct mtx nfs_sockl_mutex; 120 struct mtx nfs_state_mutex; 121 struct mtx nfs_nameid_mutex; 122 struct mtx nfs_req_mutex; 123 struct mtx nfs_slock_mutex; 124 125 /* local functions */ 126 static int nfssvc_call(struct thread *, struct nfssvc_args *, struct ucred *); 127 128 #ifdef __NO_STRICT_ALIGNMENT 129 /* 130 * These architectures don't need re-alignment, so just return. 131 */ 132 void 133 newnfs_realign(struct mbuf **pm) 134 { 135 136 return; 137 } 138 #else /* !__NO_STRICT_ALIGNMENT */ 139 /* 140 * newnfs_realign: 141 * 142 * Check for badly aligned mbuf data and realign by copying the unaligned 143 * portion of the data into a new mbuf chain and freeing the portions 144 * of the old chain that were replaced. 145 * 146 * We cannot simply realign the data within the existing mbuf chain 147 * because the underlying buffers may contain other rpc commands and 148 * we cannot afford to overwrite them. 149 * 150 * We would prefer to avoid this situation entirely. The situation does 151 * not occur with NFS/UDP and is supposed to only occassionally occur 152 * with TCP. Use vfs.nfs.realign_count and realign_test to check this. 153 * 154 */ 155 void 156 newnfs_realign(struct mbuf **pm) 157 { 158 struct mbuf *m, *n; 159 int off, space; 160 161 ++nfs_realign_test; 162 while ((m = *pm) != NULL) { 163 if ((m->m_len & 0x3) || (mtod(m, intptr_t) & 0x3)) { 164 /* 165 * NB: we can't depend on m_pkthdr.len to help us 166 * decide what to do here. May not be worth doing 167 * the m_length calculation as m_copyback will 168 * expand the mbuf chain below as needed. 169 */ 170 space = m_length(m, NULL); 171 if (space >= MINCLSIZE) { 172 /* NB: m_copyback handles space > MCLBYTES */ 173 n = m_getcl(M_WAITOK, MT_DATA, 0); 174 } else 175 n = m_get(M_WAITOK, MT_DATA); 176 if (n == NULL) 177 return; 178 /* 179 * Align the remainder of the mbuf chain. 180 */ 181 n->m_len = 0; 182 off = 0; 183 while (m != NULL) { 184 m_copyback(n, off, m->m_len, mtod(m, caddr_t)); 185 off += m->m_len; 186 m = m->m_next; 187 } 188 m_freem(*pm); 189 *pm = n; 190 ++nfs_realign_count; 191 break; 192 } 193 pm = &m->m_next; 194 } 195 } 196 #endif /* __NO_STRICT_ALIGNMENT */ 197 198 #ifdef notdef 199 static void 200 nfsrv_object_create(struct vnode *vp, struct thread *td) 201 { 202 203 if (vp == NULL || vp->v_type != VREG) 204 return; 205 (void) vfs_object_create(vp, td, td->td_ucred); 206 } 207 #endif 208 209 /* 210 * Look up a file name. Basically just initialize stuff and call namei(). 211 */ 212 int 213 nfsrv_lookupfilename(struct nameidata *ndp, char *fname, NFSPROC_T *p) 214 { 215 int error; 216 217 NDINIT(ndp, LOOKUP, FOLLOW | LOCKLEAF | MPSAFE, UIO_USERSPACE, fname, 218 p); 219 error = namei(ndp); 220 if (!error) { 221 NDFREE(ndp, NDF_ONLY_PNBUF); 222 } 223 return (error); 224 } 225 226 /* 227 * Copy NFS uid, gids to the cred structure. 228 */ 229 void 230 newnfs_copycred(struct nfscred *nfscr, struct ucred *cr) 231 { 232 233 KASSERT(nfscr->nfsc_ngroups >= 0, 234 ("newnfs_copycred: negative nfsc_ngroups")); 235 cr->cr_uid = nfscr->nfsc_uid; 236 crsetgroups(cr, nfscr->nfsc_ngroups, nfscr->nfsc_groups); 237 } 238 239 /* 240 * Map args from nfsmsleep() to msleep(). 241 */ 242 int 243 nfsmsleep(void *chan, void *mutex, int prio, const char *wmesg, 244 struct timespec *ts) 245 { 246 u_int64_t nsecval; 247 int error, timeo; 248 249 if (ts) { 250 timeo = hz * ts->tv_sec; 251 nsecval = (u_int64_t)ts->tv_nsec; 252 nsecval = ((nsecval * ((u_int64_t)hz)) + 500000000) / 253 1000000000; 254 timeo += (int)nsecval; 255 } else { 256 timeo = 0; 257 } 258 error = msleep(chan, (struct mtx *)mutex, prio, wmesg, timeo); 259 return (error); 260 } 261 262 /* 263 * Get the file system info for the server. For now, just assume FFS. 264 */ 265 void 266 nfsvno_getfs(struct nfsfsinfo *sip, int isdgram) 267 { 268 int pref; 269 270 /* 271 * XXX 272 * There should be file system VFS OP(s) to get this information. 273 * For now, assume ufs. 274 */ 275 if (isdgram) 276 pref = NFS_MAXDGRAMDATA; 277 else 278 pref = NFS_MAXDATA; 279 sip->fs_rtmax = NFS_MAXDATA; 280 sip->fs_rtpref = pref; 281 sip->fs_rtmult = NFS_FABLKSIZE; 282 sip->fs_wtmax = NFS_MAXDATA; 283 sip->fs_wtpref = pref; 284 sip->fs_wtmult = NFS_FABLKSIZE; 285 sip->fs_dtpref = pref; 286 sip->fs_maxfilesize = 0xffffffffffffffffull; 287 sip->fs_timedelta.tv_sec = 0; 288 sip->fs_timedelta.tv_nsec = 1; 289 sip->fs_properties = (NFSV3FSINFO_LINK | 290 NFSV3FSINFO_SYMLINK | NFSV3FSINFO_HOMOGENEOUS | 291 NFSV3FSINFO_CANSETTIME); 292 } 293 294 /* 295 * Do the pathconf vnode op. 296 */ 297 int 298 nfsvno_pathconf(struct vnode *vp, int flag, register_t *retf, 299 struct ucred *cred, struct thread *p) 300 { 301 int error; 302 303 error = VOP_PATHCONF(vp, flag, retf); 304 if (error == EOPNOTSUPP || error == EINVAL) { 305 /* 306 * Some file systems return EINVAL for name arguments not 307 * supported and some return EOPNOTSUPP for this case. 308 * So the NFSv3 Pathconf RPC doesn't fail for these cases, 309 * just fake them. 310 */ 311 switch (flag) { 312 case _PC_LINK_MAX: 313 *retf = LINK_MAX; 314 break; 315 case _PC_NAME_MAX: 316 *retf = NAME_MAX; 317 break; 318 case _PC_CHOWN_RESTRICTED: 319 *retf = 1; 320 break; 321 case _PC_NO_TRUNC: 322 *retf = 1; 323 break; 324 default: 325 /* 326 * Only happens if a _PC_xxx is added to the server, 327 * but this isn't updated. 328 */ 329 *retf = 0; 330 printf("nfsrvd pathconf flag=%d not supp\n", flag); 331 }; 332 error = 0; 333 } 334 NFSEXITCODE(error); 335 return (error); 336 } 337 338 /* Fake nfsrv_atroot. Just return 0 */ 339 int 340 nfsrv_atroot(struct vnode *vp, long *retp) 341 { 342 343 return (0); 344 } 345 346 /* 347 * Set the credentials to refer to root. 348 * If only the various BSDen could agree on whether cr_gid is a separate 349 * field or cr_groups[0]... 350 */ 351 void 352 newnfs_setroot(struct ucred *cred) 353 { 354 355 cred->cr_uid = 0; 356 cred->cr_groups[0] = 0; 357 cred->cr_ngroups = 1; 358 } 359 360 /* 361 * Get the client credential. Used for Renew and recovery. 362 */ 363 struct ucred * 364 newnfs_getcred(void) 365 { 366 struct ucred *cred; 367 struct thread *td = curthread; 368 369 cred = crdup(td->td_ucred); 370 newnfs_setroot(cred); 371 return (cred); 372 } 373 374 /* 375 * Nfs timer routine 376 * Call the nfsd's timer function once/sec. 377 */ 378 void 379 newnfs_timer(void *arg) 380 { 381 static time_t lasttime = 0; 382 /* 383 * Call the server timer, if set up. 384 * The argument indicates if it is the next second and therefore 385 * leases should be checked. 386 */ 387 if (lasttime != NFSD_MONOSEC) { 388 lasttime = NFSD_MONOSEC; 389 if (nfsd_call_servertimer != NULL) 390 (*nfsd_call_servertimer)(); 391 } 392 callout_reset(&newnfsd_callout, nfscl_ticks, newnfs_timer, NULL); 393 } 394 395 396 /* 397 * Sleep for a short period of time unless errval == NFSERR_GRACE, where 398 * the sleep should be for 5 seconds. 399 * Since lbolt doesn't exist in FreeBSD-CURRENT, just use a timeout on 400 * an event that never gets a wakeup. Only return EINTR or 0. 401 */ 402 int 403 nfs_catnap(int prio, int errval, const char *wmesg) 404 { 405 static int non_event; 406 int ret; 407 408 if (errval == NFSERR_GRACE) 409 ret = tsleep(&non_event, prio, wmesg, 5 * hz); 410 else 411 ret = tsleep(&non_event, prio, wmesg, 1); 412 if (ret != EINTR) 413 ret = 0; 414 return (ret); 415 } 416 417 /* 418 * Get referral. For now, just fail. 419 */ 420 struct nfsreferral * 421 nfsv4root_getreferral(struct vnode *vp, struct vnode *dvp, u_int32_t fileno) 422 { 423 424 return (NULL); 425 } 426 427 static int 428 nfssvc_nfscommon(struct thread *td, struct nfssvc_args *uap) 429 { 430 int error; 431 432 error = nfssvc_call(td, uap, td->td_ucred); 433 NFSEXITCODE(error); 434 return (error); 435 } 436 437 static int 438 nfssvc_call(struct thread *p, struct nfssvc_args *uap, struct ucred *cred) 439 { 440 int error = EINVAL; 441 struct nfsd_idargs nid; 442 443 if (uap->flag & NFSSVC_IDNAME) { 444 error = copyin(uap->argp, (caddr_t)&nid, sizeof (nid)); 445 if (error) 446 goto out; 447 error = nfssvc_idname(&nid); 448 goto out; 449 } else if (uap->flag & NFSSVC_GETSTATS) { 450 error = copyout(&newnfsstats, 451 CAST_USER_ADDR_T(uap->argp), sizeof (newnfsstats)); 452 if (error == 0) { 453 if ((uap->flag & NFSSVC_ZEROCLTSTATS) != 0) { 454 newnfsstats.attrcache_hits = 0; 455 newnfsstats.attrcache_misses = 0; 456 newnfsstats.lookupcache_hits = 0; 457 newnfsstats.lookupcache_misses = 0; 458 newnfsstats.direofcache_hits = 0; 459 newnfsstats.direofcache_misses = 0; 460 newnfsstats.accesscache_hits = 0; 461 newnfsstats.accesscache_misses = 0; 462 newnfsstats.biocache_reads = 0; 463 newnfsstats.read_bios = 0; 464 newnfsstats.read_physios = 0; 465 newnfsstats.biocache_writes = 0; 466 newnfsstats.write_bios = 0; 467 newnfsstats.write_physios = 0; 468 newnfsstats.biocache_readlinks = 0; 469 newnfsstats.readlink_bios = 0; 470 newnfsstats.biocache_readdirs = 0; 471 newnfsstats.readdir_bios = 0; 472 newnfsstats.rpcretries = 0; 473 newnfsstats.rpcrequests = 0; 474 newnfsstats.rpctimeouts = 0; 475 newnfsstats.rpcunexpected = 0; 476 newnfsstats.rpcinvalid = 0; 477 bzero(newnfsstats.rpccnt, 478 sizeof(newnfsstats.rpccnt)); 479 } 480 if ((uap->flag & NFSSVC_ZEROSRVSTATS) != 0) { 481 newnfsstats.srvrpc_errs = 0; 482 newnfsstats.srv_errs = 0; 483 newnfsstats.srvcache_inproghits = 0; 484 newnfsstats.srvcache_idemdonehits = 0; 485 newnfsstats.srvcache_nonidemdonehits = 0; 486 newnfsstats.srvcache_misses = 0; 487 newnfsstats.srvcache_tcppeak = 0; 488 newnfsstats.srvclients = 0; 489 newnfsstats.srvopenowners = 0; 490 newnfsstats.srvopens = 0; 491 newnfsstats.srvlockowners = 0; 492 newnfsstats.srvlocks = 0; 493 newnfsstats.srvdelegates = 0; 494 newnfsstats.clopenowners = 0; 495 newnfsstats.clopens = 0; 496 newnfsstats.cllockowners = 0; 497 newnfsstats.cllocks = 0; 498 newnfsstats.cldelegates = 0; 499 newnfsstats.cllocalopenowners = 0; 500 newnfsstats.cllocalopens = 0; 501 newnfsstats.cllocallockowners = 0; 502 newnfsstats.cllocallocks = 0; 503 bzero(newnfsstats.srvrpccnt, 504 sizeof(newnfsstats.srvrpccnt)); 505 bzero(newnfsstats.cbrpccnt, 506 sizeof(newnfsstats.cbrpccnt)); 507 } 508 } 509 goto out; 510 } else if (uap->flag & NFSSVC_NFSUSERDPORT) { 511 u_short sockport; 512 513 error = copyin(uap->argp, (caddr_t)&sockport, 514 sizeof (u_short)); 515 if (!error) 516 error = nfsrv_nfsuserdport(sockport, p); 517 } else if (uap->flag & NFSSVC_NFSUSERDDELPORT) { 518 nfsrv_nfsuserddelport(); 519 error = 0; 520 } 521 522 out: 523 NFSEXITCODE(error); 524 return (error); 525 } 526 527 /* 528 * called by all three modevent routines, so that it gets things 529 * initialized soon enough. 530 */ 531 void 532 newnfs_portinit(void) 533 { 534 static int inited = 0; 535 536 if (inited) 537 return; 538 inited = 1; 539 /* Initialize SMP locks used by both client and server. */ 540 mtx_init(&newnfsd_mtx, "newnfsd_mtx", NULL, MTX_DEF); 541 mtx_init(&nfs_state_mutex, "nfs_state_mutex", NULL, MTX_DEF); 542 } 543 544 /* 545 * Determine if the file system supports NFSv4 ACLs. 546 * Return 1 if it does, 0 otherwise. 547 */ 548 int 549 nfs_supportsnfsv4acls(struct vnode *vp) 550 { 551 int error; 552 register_t retval; 553 554 ASSERT_VOP_LOCKED(vp, "nfs supports nfsv4acls"); 555 556 if (nfsrv_useacl == 0) 557 return (0); 558 error = VOP_PATHCONF(vp, _PC_ACL_NFS4, &retval); 559 if (error == 0 && retval != 0) 560 return (1); 561 return (0); 562 } 563 564 extern int (*nfsd_call_nfscommon)(struct thread *, struct nfssvc_args *); 565 566 /* 567 * Called once to initialize data structures... 568 */ 569 static int 570 nfscommon_modevent(module_t mod, int type, void *data) 571 { 572 int error = 0; 573 static int loaded = 0; 574 575 switch (type) { 576 case MOD_LOAD: 577 if (loaded) 578 goto out; 579 newnfs_portinit(); 580 mtx_init(&nfs_nameid_mutex, "nfs_nameid_mutex", NULL, MTX_DEF); 581 mtx_init(&nfs_sockl_mutex, "nfs_sockl_mutex", NULL, MTX_DEF); 582 mtx_init(&nfs_slock_mutex, "nfs_slock_mutex", NULL, MTX_DEF); 583 mtx_init(&nfs_req_mutex, "nfs_req_mutex", NULL, MTX_DEF); 584 mtx_init(&nfsrv_nfsuserdsock.nr_mtx, "nfsuserd", NULL, 585 MTX_DEF); 586 callout_init(&newnfsd_callout, CALLOUT_MPSAFE); 587 newnfs_init(); 588 nfsd_call_nfscommon = nfssvc_nfscommon; 589 loaded = 1; 590 break; 591 592 case MOD_UNLOAD: 593 if (newnfs_numnfsd != 0 || nfsrv_nfsuserd != 0 || 594 nfs_numnfscbd != 0) { 595 error = EBUSY; 596 break; 597 } 598 599 nfsd_call_nfscommon = NULL; 600 callout_drain(&newnfsd_callout); 601 /* and get rid of the mutexes */ 602 mtx_destroy(&nfs_nameid_mutex); 603 mtx_destroy(&newnfsd_mtx); 604 mtx_destroy(&nfs_state_mutex); 605 mtx_destroy(&nfs_sockl_mutex); 606 mtx_destroy(&nfs_slock_mutex); 607 mtx_destroy(&nfs_req_mutex); 608 mtx_destroy(&nfsrv_nfsuserdsock.nr_mtx); 609 loaded = 0; 610 break; 611 default: 612 error = EOPNOTSUPP; 613 break; 614 } 615 616 out: 617 NFSEXITCODE(error); 618 return error; 619 } 620 static moduledata_t nfscommon_mod = { 621 "nfscommon", 622 nfscommon_modevent, 623 NULL, 624 }; 625 DECLARE_MODULE(nfscommon, nfscommon_mod, SI_SUB_VFS, SI_ORDER_ANY); 626 627 /* So that loader and kldload(2) can find us, wherever we are.. */ 628 MODULE_VERSION(nfscommon, 1); 629 MODULE_DEPEND(nfscommon, nfssvc, 1, 1, 1); 630 MODULE_DEPEND(nfscommon, krpc, 1, 1, 1); 631
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