1 /* $NetBSD: nfs_commonport.c,v 1.1.1.1 2013/09/30 07:19:36 dholland Exp $ */ 2 /*- 3 * Copyright (c) 1989, 1993 4 * The Regents of the University of California. All rights reserved. 5 * 6 * This code is derived from software contributed to Berkeley by 7 * Rick Macklem at The University of Guelph. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 */ 34 35 #include <sys/cdefs.h> 36 /* __FBSDID("FreeBSD: head/sys/fs/nfs/nfs_commonport.c 249592 2013-04-17 21:00:22Z ken "); */ 37 __RCSID("$NetBSD: nfs_commonport.c,v 1.1.1.1 2013/09/30 07:19:36 dholland Exp $"); 38 39 /* 40 * Functions that need to be different for different versions of BSD 41 * kernel should be kept here, along with any global storage specific 42 * to this BSD variant. 43 */ 44 #include <fs/nfs/nfsport.h> 45 #include <sys/sysctl.h> 46 #include <vm/vm.h> 47 #include <vm/vm_object.h> 48 #include <vm/vm_page.h> 49 #include <vm/vm_param.h> 50 #include <vm/vm_map.h> 51 #include <vm/vm_kern.h> 52 #include <vm/vm_extern.h> 53 #include <vm/uma.h> 54 55 extern int nfscl_ticks; 56 extern int nfsrv_nfsuserd; 57 extern struct nfssockreq nfsrv_nfsuserdsock; 58 extern void (*nfsd_call_recall)(struct vnode *, int, struct ucred *, 59 struct thread *); 60 extern int nfsrv_useacl; 61 struct mount nfsv4root_mnt; 62 int newnfs_numnfsd = 0; 63 struct nfsstats newnfsstats; 64 int nfs_numnfscbd = 0; 65 int nfscl_debuglevel = 0; 66 char nfsv4_callbackaddr[INET6_ADDRSTRLEN]; 67 struct callout newnfsd_callout; 68 void (*nfsd_call_servertimer)(void) = NULL; 69 void (*ncl_call_invalcaches)(struct vnode *) = NULL; 70 71 static int nfs_realign_test; 72 static int nfs_realign_count; 73 74 SYSCTL_NODE(_vfs, OID_AUTO, nfs, CTLFLAG_RW, 0, "New NFS filesystem"); 75 SYSCTL_INT(_vfs_nfs, OID_AUTO, realign_test, CTLFLAG_RW, &nfs_realign_test, 76 0, "Number of realign tests done"); 77 SYSCTL_INT(_vfs_nfs, OID_AUTO, realign_count, CTLFLAG_RW, &nfs_realign_count, 78 0, "Number of mbuf realignments done"); 79 SYSCTL_STRING(_vfs_nfs, OID_AUTO, callback_addr, CTLFLAG_RW, 80 nfsv4_callbackaddr, sizeof(nfsv4_callbackaddr), 81 "NFSv4 callback addr for server to use"); 82 SYSCTL_INT(_vfs_nfs, OID_AUTO, debuglevel, CTLFLAG_RW, &nfscl_debuglevel, 83 0, "Debug level for new nfs client"); 84 85 /* 86 * Defines for malloc 87 * (Here for FreeBSD, since they allocate storage.) 88 */ 89 MALLOC_DEFINE(M_NEWNFSRVCACHE, "NFSD srvcache", "NFSD Server Request Cache"); 90 MALLOC_DEFINE(M_NEWNFSDCLIENT, "NFSD V4client", "NFSD V4 Client Id"); 91 MALLOC_DEFINE(M_NEWNFSDSTATE, "NFSD V4state", 92 "NFSD V4 State (Openowner, Open, Lockowner, Delegation"); 93 MALLOC_DEFINE(M_NEWNFSDLOCK, "NFSD V4lock", "NFSD V4 byte range lock"); 94 MALLOC_DEFINE(M_NEWNFSDLOCKFILE, "NFSD lckfile", "NFSD Open/Lock file"); 95 MALLOC_DEFINE(M_NEWNFSSTRING, "NFSD string", "NFSD V4 long string"); 96 MALLOC_DEFINE(M_NEWNFSUSERGROUP, "NFSD usrgroup", "NFSD V4 User/group map"); 97 MALLOC_DEFINE(M_NEWNFSDREQ, "NFS req", "NFS request header"); 98 MALLOC_DEFINE(M_NEWNFSFH, "NFS fh", "NFS file handle"); 99 MALLOC_DEFINE(M_NEWNFSCLOWNER, "NFSCL owner", "NFSCL Open Owner"); 100 MALLOC_DEFINE(M_NEWNFSCLOPEN, "NFSCL open", "NFSCL Open"); 101 MALLOC_DEFINE(M_NEWNFSCLDELEG, "NFSCL deleg", "NFSCL Delegation"); 102 MALLOC_DEFINE(M_NEWNFSCLCLIENT, "NFSCL client", "NFSCL Client"); 103 MALLOC_DEFINE(M_NEWNFSCLLOCKOWNER, "NFSCL lckown", "NFSCL Lock Owner"); 104 MALLOC_DEFINE(M_NEWNFSCLLOCK, "NFSCL lck", "NFSCL Lock"); 105 MALLOC_DEFINE(M_NEWNFSV4NODE, "NEWNFSnode", "New nfs vnode"); 106 MALLOC_DEFINE(M_NEWNFSDIRECTIO, "NEWdirectio", "New nfs Direct IO buffer"); 107 MALLOC_DEFINE(M_NEWNFSDIROFF, "NFSCL diroffdiroff", 108 "New NFS directory offset data"); 109 MALLOC_DEFINE(M_NEWNFSDROLLBACK, "NFSD rollback", 110 "New NFS local lock rollback"); 111 MALLOC_DEFINE(M_NEWNFSLAYOUT, "NFSCL layout", "NFSv4.1 Layout"); 112 MALLOC_DEFINE(M_NEWNFSFLAYOUT, "NFSCL flayout", "NFSv4.1 File Layout"); 113 MALLOC_DEFINE(M_NEWNFSDEVINFO, "NFSCL devinfo", "NFSv4.1 Device Info"); 114 MALLOC_DEFINE(M_NEWNFSSOCKREQ, "NFSCL sockreq", "NFS Sock Req"); 115 MALLOC_DEFINE(M_NEWNFSCLDS, "NFSCL session", "NFSv4.1 Session"); 116 MALLOC_DEFINE(M_NEWNFSLAYRECALL, "NFSCL layrecall", "NFSv4.1 Layout Recall"); 117 118 /* 119 * Definition of mutex locks. 120 * newnfsd_mtx is used in nfsrvd_nfsd() to protect the nfs socket list 121 * and assorted other nfsd structures. 122 */ 123 struct mtx newnfsd_mtx; 124 struct mtx nfs_sockl_mutex; 125 struct mtx nfs_state_mutex; 126 struct mtx nfs_nameid_mutex; 127 struct mtx nfs_req_mutex; 128 struct mtx nfs_slock_mutex; 129 130 /* local functions */ 131 static int nfssvc_call(struct thread *, struct nfssvc_args *, struct ucred *); 132 133 #ifdef __NO_STRICT_ALIGNMENT 134 /* 135 * These architectures don't need re-alignment, so just return. 136 */ 137 int 138 newnfs_realign(struct mbuf **pm, int how) 139 { 140 141 return (0); 142 } 143 #else /* !__NO_STRICT_ALIGNMENT */ 144 /* 145 * newnfs_realign: 146 * 147 * Check for badly aligned mbuf data and realign by copying the unaligned 148 * portion of the data into a new mbuf chain and freeing the portions 149 * of the old chain that were replaced. 150 * 151 * We cannot simply realign the data within the existing mbuf chain 152 * because the underlying buffers may contain other rpc commands and 153 * we cannot afford to overwrite them. 154 * 155 * We would prefer to avoid this situation entirely. The situation does 156 * not occur with NFS/UDP and is supposed to only occassionally occur 157 * with TCP. Use vfs.nfs.realign_count and realign_test to check this. 158 * 159 */ 160 int 161 newnfs_realign(struct mbuf **pm, int how) 162 { 163 struct mbuf *m, *n; 164 int off, space; 165 166 ++nfs_realign_test; 167 while ((m = *pm) != NULL) { 168 if ((m->m_len & 0x3) || (mtod(m, intptr_t) & 0x3)) { 169 /* 170 * NB: we can't depend on m_pkthdr.len to help us 171 * decide what to do here. May not be worth doing 172 * the m_length calculation as m_copyback will 173 * expand the mbuf chain below as needed. 174 */ 175 space = m_length(m, NULL); 176 if (space >= MINCLSIZE) { 177 /* NB: m_copyback handles space > MCLBYTES */ 178 n = m_getcl(how, MT_DATA, 0); 179 } else 180 n = m_get(how, MT_DATA); 181 if (n == NULL) 182 return (ENOMEM); 183 /* 184 * Align the remainder of the mbuf chain. 185 */ 186 n->m_len = 0; 187 off = 0; 188 while (m != NULL) { 189 m_copyback(n, off, m->m_len, mtod(m, caddr_t)); 190 off += m->m_len; 191 m = m->m_next; 192 } 193 m_freem(*pm); 194 *pm = n; 195 ++nfs_realign_count; 196 break; 197 } 198 pm = &m->m_next; 199 } 200 201 return (0); 202 } 203 #endif /* __NO_STRICT_ALIGNMENT */ 204 205 #ifdef notdef 206 static void 207 nfsrv_object_create(struct vnode *vp, struct thread *td) 208 { 209 210 if (vp == NULL || vp->v_type != VREG) 211 return; 212 (void) vfs_object_create(vp, td, td->td_ucred); 213 } 214 #endif 215 216 /* 217 * Look up a file name. Basically just initialize stuff and call namei(). 218 */ 219 int 220 nfsrv_lookupfilename(struct nameidata *ndp, char *fname, NFSPROC_T *p) 221 { 222 int error; 223 224 NDINIT(ndp, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, fname, 225 p); 226 error = namei(ndp); 227 if (!error) { 228 NDFREE(ndp, NDF_ONLY_PNBUF); 229 } 230 return (error); 231 } 232 233 /* 234 * Copy NFS uid, gids to the cred structure. 235 */ 236 void 237 newnfs_copycred(struct nfscred *nfscr, struct ucred *cr) 238 { 239 240 KASSERT(nfscr->nfsc_ngroups >= 0, 241 ("newnfs_copycred: negative nfsc_ngroups")); 242 cr->cr_uid = nfscr->nfsc_uid; 243 crsetgroups(cr, nfscr->nfsc_ngroups, nfscr->nfsc_groups); 244 } 245 246 /* 247 * Map args from nfsmsleep() to msleep(). 248 */ 249 int 250 nfsmsleep(void *chan, void *mutex, int prio, const char *wmesg, 251 struct timespec *ts) 252 { 253 u_int64_t nsecval; 254 int error, timeo; 255 256 if (ts) { 257 timeo = hz * ts->tv_sec; 258 nsecval = (u_int64_t)ts->tv_nsec; 259 nsecval = ((nsecval * ((u_int64_t)hz)) + 500000000) / 260 1000000000; 261 timeo += (int)nsecval; 262 } else { 263 timeo = 0; 264 } 265 error = msleep(chan, (struct mtx *)mutex, prio, wmesg, timeo); 266 return (error); 267 } 268 269 /* 270 * Get the file system info for the server. For now, just assume FFS. 271 */ 272 void 273 nfsvno_getfs(struct nfsfsinfo *sip, int isdgram) 274 { 275 int pref; 276 277 /* 278 * XXX 279 * There should be file system VFS OP(s) to get this information. 280 * For now, assume ufs. 281 */ 282 if (isdgram) 283 pref = NFS_MAXDGRAMDATA; 284 else 285 pref = NFS_MAXDATA; 286 sip->fs_rtmax = NFS_MAXDATA; 287 sip->fs_rtpref = pref; 288 sip->fs_rtmult = NFS_FABLKSIZE; 289 sip->fs_wtmax = NFS_MAXDATA; 290 sip->fs_wtpref = pref; 291 sip->fs_wtmult = NFS_FABLKSIZE; 292 sip->fs_dtpref = pref; 293 sip->fs_maxfilesize = 0xffffffffffffffffull; 294 sip->fs_timedelta.tv_sec = 0; 295 sip->fs_timedelta.tv_nsec = 1; 296 sip->fs_properties = (NFSV3FSINFO_LINK | 297 NFSV3FSINFO_SYMLINK | NFSV3FSINFO_HOMOGENEOUS | 298 NFSV3FSINFO_CANSETTIME); 299 } 300 301 /* 302 * Do the pathconf vnode op. 303 */ 304 int 305 nfsvno_pathconf(struct vnode *vp, int flag, register_t *retf, 306 struct ucred *cred, struct thread *p) 307 { 308 int error; 309 310 error = VOP_PATHCONF(vp, flag, retf); 311 if (error == EOPNOTSUPP || error == EINVAL) { 312 /* 313 * Some file systems return EINVAL for name arguments not 314 * supported and some return EOPNOTSUPP for this case. 315 * So the NFSv3 Pathconf RPC doesn't fail for these cases, 316 * just fake them. 317 */ 318 switch (flag) { 319 case _PC_LINK_MAX: 320 *retf = LINK_MAX; 321 break; 322 case _PC_NAME_MAX: 323 *retf = NAME_MAX; 324 break; 325 case _PC_CHOWN_RESTRICTED: 326 *retf = 1; 327 break; 328 case _PC_NO_TRUNC: 329 *retf = 1; 330 break; 331 default: 332 /* 333 * Only happens if a _PC_xxx is added to the server, 334 * but this isn't updated. 335 */ 336 *retf = 0; 337 printf("nfsrvd pathconf flag=%d not supp\n", flag); 338 }; 339 error = 0; 340 } 341 NFSEXITCODE(error); 342 return (error); 343 } 344 345 /* Fake nfsrv_atroot. Just return 0 */ 346 int 347 nfsrv_atroot(struct vnode *vp, long *retp) 348 { 349 350 return (0); 351 } 352 353 /* 354 * Set the credentials to refer to root. 355 * If only the various BSDen could agree on whether cr_gid is a separate 356 * field or cr_groups[0]... 357 */ 358 void 359 newnfs_setroot(struct ucred *cred) 360 { 361 362 cred->cr_uid = 0; 363 cred->cr_groups[0] = 0; 364 cred->cr_ngroups = 1; 365 } 366 367 /* 368 * Get the client credential. Used for Renew and recovery. 369 */ 370 struct ucred * 371 newnfs_getcred(void) 372 { 373 struct ucred *cred; 374 struct thread *td = curthread; 375 376 cred = crdup(td->td_ucred); 377 newnfs_setroot(cred); 378 return (cred); 379 } 380 381 /* 382 * Nfs timer routine 383 * Call the nfsd's timer function once/sec. 384 */ 385 void 386 newnfs_timer(void *arg) 387 { 388 static time_t lasttime = 0; 389 /* 390 * Call the server timer, if set up. 391 * The argument indicates if it is the next second and therefore 392 * leases should be checked. 393 */ 394 if (lasttime != NFSD_MONOSEC) { 395 lasttime = NFSD_MONOSEC; 396 if (nfsd_call_servertimer != NULL) 397 (*nfsd_call_servertimer)(); 398 } 399 callout_reset(&newnfsd_callout, nfscl_ticks, newnfs_timer, NULL); 400 } 401 402 403 /* 404 * Sleep for a short period of time unless errval == NFSERR_GRACE, where 405 * the sleep should be for 5 seconds. 406 * Since lbolt doesn't exist in FreeBSD-CURRENT, just use a timeout on 407 * an event that never gets a wakeup. Only return EINTR or 0. 408 */ 409 int 410 nfs_catnap(int prio, int errval, const char *wmesg) 411 { 412 static int non_event; 413 int ret; 414 415 if (errval == NFSERR_GRACE) 416 ret = tsleep(&non_event, prio, wmesg, 5 * hz); 417 else 418 ret = tsleep(&non_event, prio, wmesg, 1); 419 if (ret != EINTR) 420 ret = 0; 421 return (ret); 422 } 423 424 /* 425 * Get referral. For now, just fail. 426 */ 427 struct nfsreferral * 428 nfsv4root_getreferral(struct vnode *vp, struct vnode *dvp, u_int32_t fileno) 429 { 430 431 return (NULL); 432 } 433 434 static int 435 nfssvc_nfscommon(struct thread *td, struct nfssvc_args *uap) 436 { 437 int error; 438 439 error = nfssvc_call(td, uap, td->td_ucred); 440 NFSEXITCODE(error); 441 return (error); 442 } 443 444 static int 445 nfssvc_call(struct thread *p, struct nfssvc_args *uap, struct ucred *cred) 446 { 447 int error = EINVAL; 448 struct nfsd_idargs nid; 449 450 if (uap->flag & NFSSVC_IDNAME) { 451 error = copyin(uap->argp, (caddr_t)&nid, sizeof (nid)); 452 if (error) 453 goto out; 454 error = nfssvc_idname(&nid); 455 goto out; 456 } else if (uap->flag & NFSSVC_GETSTATS) { 457 error = copyout(&newnfsstats, 458 CAST_USER_ADDR_T(uap->argp), sizeof (newnfsstats)); 459 if (error == 0) { 460 if ((uap->flag & NFSSVC_ZEROCLTSTATS) != 0) { 461 newnfsstats.attrcache_hits = 0; 462 newnfsstats.attrcache_misses = 0; 463 newnfsstats.lookupcache_hits = 0; 464 newnfsstats.lookupcache_misses = 0; 465 newnfsstats.direofcache_hits = 0; 466 newnfsstats.direofcache_misses = 0; 467 newnfsstats.accesscache_hits = 0; 468 newnfsstats.accesscache_misses = 0; 469 newnfsstats.biocache_reads = 0; 470 newnfsstats.read_bios = 0; 471 newnfsstats.read_physios = 0; 472 newnfsstats.biocache_writes = 0; 473 newnfsstats.write_bios = 0; 474 newnfsstats.write_physios = 0; 475 newnfsstats.biocache_readlinks = 0; 476 newnfsstats.readlink_bios = 0; 477 newnfsstats.biocache_readdirs = 0; 478 newnfsstats.readdir_bios = 0; 479 newnfsstats.rpcretries = 0; 480 newnfsstats.rpcrequests = 0; 481 newnfsstats.rpctimeouts = 0; 482 newnfsstats.rpcunexpected = 0; 483 newnfsstats.rpcinvalid = 0; 484 bzero(newnfsstats.rpccnt, 485 sizeof(newnfsstats.rpccnt)); 486 } 487 if ((uap->flag & NFSSVC_ZEROSRVSTATS) != 0) { 488 newnfsstats.srvrpc_errs = 0; 489 newnfsstats.srv_errs = 0; 490 newnfsstats.srvcache_inproghits = 0; 491 newnfsstats.srvcache_idemdonehits = 0; 492 newnfsstats.srvcache_nonidemdonehits = 0; 493 newnfsstats.srvcache_misses = 0; 494 newnfsstats.srvcache_tcppeak = 0; 495 newnfsstats.srvclients = 0; 496 newnfsstats.srvopenowners = 0; 497 newnfsstats.srvopens = 0; 498 newnfsstats.srvlockowners = 0; 499 newnfsstats.srvlocks = 0; 500 newnfsstats.srvdelegates = 0; 501 newnfsstats.clopenowners = 0; 502 newnfsstats.clopens = 0; 503 newnfsstats.cllockowners = 0; 504 newnfsstats.cllocks = 0; 505 newnfsstats.cldelegates = 0; 506 newnfsstats.cllocalopenowners = 0; 507 newnfsstats.cllocalopens = 0; 508 newnfsstats.cllocallockowners = 0; 509 newnfsstats.cllocallocks = 0; 510 bzero(newnfsstats.srvrpccnt, 511 sizeof(newnfsstats.srvrpccnt)); 512 bzero(newnfsstats.cbrpccnt, 513 sizeof(newnfsstats.cbrpccnt)); 514 } 515 } 516 goto out; 517 } else if (uap->flag & NFSSVC_NFSUSERDPORT) { 518 u_short sockport; 519 520 error = copyin(uap->argp, (caddr_t)&sockport, 521 sizeof (u_short)); 522 if (!error) 523 error = nfsrv_nfsuserdport(sockport, p); 524 } else if (uap->flag & NFSSVC_NFSUSERDDELPORT) { 525 nfsrv_nfsuserddelport(); 526 error = 0; 527 } 528 529 out: 530 NFSEXITCODE(error); 531 return (error); 532 } 533 534 /* 535 * called by all three modevent routines, so that it gets things 536 * initialized soon enough. 537 */ 538 void 539 newnfs_portinit(void) 540 { 541 static int inited = 0; 542 543 if (inited) 544 return; 545 inited = 1; 546 /* Initialize SMP locks used by both client and server. */ 547 mtx_init(&newnfsd_mtx, "newnfsd_mtx", NULL, MTX_DEF); 548 mtx_init(&nfs_state_mutex, "nfs_state_mutex", NULL, MTX_DEF); 549 } 550 551 /* 552 * Determine if the file system supports NFSv4 ACLs. 553 * Return 1 if it does, 0 otherwise. 554 */ 555 int 556 nfs_supportsnfsv4acls(struct vnode *vp) 557 { 558 int error; 559 register_t retval; 560 561 ASSERT_VOP_LOCKED(vp, "nfs supports nfsv4acls"); 562 563 if (nfsrv_useacl == 0) 564 return (0); 565 error = VOP_PATHCONF(vp, _PC_ACL_NFS4, &retval); 566 if (error == 0 && retval != 0) 567 return (1); 568 return (0); 569 } 570 571 extern int (*nfsd_call_nfscommon)(struct thread *, struct nfssvc_args *); 572 573 /* 574 * Called once to initialize data structures... 575 */ 576 static int 577 nfscommon_modevent(module_t mod, int type, void *data) 578 { 579 int error = 0; 580 static int loaded = 0; 581 582 switch (type) { 583 case MOD_LOAD: 584 if (loaded) 585 goto out; 586 newnfs_portinit(); 587 mtx_init(&nfs_nameid_mutex, "nfs_nameid_mutex", NULL, MTX_DEF); 588 mtx_init(&nfs_sockl_mutex, "nfs_sockl_mutex", NULL, MTX_DEF); 589 mtx_init(&nfs_slock_mutex, "nfs_slock_mutex", NULL, MTX_DEF); 590 mtx_init(&nfs_req_mutex, "nfs_req_mutex", NULL, MTX_DEF); 591 mtx_init(&nfsrv_nfsuserdsock.nr_mtx, "nfsuserd", NULL, 592 MTX_DEF); 593 callout_init(&newnfsd_callout, CALLOUT_MPSAFE); 594 newnfs_init(); 595 nfsd_call_nfscommon = nfssvc_nfscommon; 596 loaded = 1; 597 break; 598 599 case MOD_UNLOAD: 600 if (newnfs_numnfsd != 0 || nfsrv_nfsuserd != 0 || 601 nfs_numnfscbd != 0) { 602 error = EBUSY; 603 break; 604 } 605 606 nfsd_call_nfscommon = NULL; 607 callout_drain(&newnfsd_callout); 608 /* and get rid of the mutexes */ 609 mtx_destroy(&nfs_nameid_mutex); 610 mtx_destroy(&newnfsd_mtx); 611 mtx_destroy(&nfs_state_mutex); 612 mtx_destroy(&nfs_sockl_mutex); 613 mtx_destroy(&nfs_slock_mutex); 614 mtx_destroy(&nfs_req_mutex); 615 mtx_destroy(&nfsrv_nfsuserdsock.nr_mtx); 616 loaded = 0; 617 break; 618 default: 619 error = EOPNOTSUPP; 620 break; 621 } 622 623 out: 624 NFSEXITCODE(error); 625 return error; 626 } 627 static moduledata_t nfscommon_mod = { 628 "nfscommon", 629 nfscommon_modevent, 630 NULL, 631 }; 632 DECLARE_MODULE(nfscommon, nfscommon_mod, SI_SUB_VFS, SI_ORDER_ANY); 633 634 /* So that loader and kldload(2) can find us, wherever we are.. */ 635 MODULE_VERSION(nfscommon, 1); 636 MODULE_DEPEND(nfscommon, nfssvc, 1, 1, 1); 637 MODULE_DEPEND(nfscommon, krpc, 1, 1, 1); 638 639