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/11.0/sys/fs/nfs/nfs_commonport.c 298788 2016-04-29 16:07:25Z pfg $"); 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 53 extern int nfscl_ticks; 54 extern int nfsrv_nfsuserd; 55 extern struct nfssockreq nfsrv_nfsuserdsock; 56 extern void (*nfsd_call_recall)(struct vnode *, int, struct ucred *, 57 struct thread *); 58 extern int nfsrv_useacl; 59 struct mount nfsv4root_mnt; 60 int newnfs_numnfsd = 0; 61 struct nfsstats newnfsstats; 62 int nfs_numnfscbd = 0; 63 int nfscl_debuglevel = 0; 64 char nfsv4_callbackaddr[INET6_ADDRSTRLEN]; 65 struct callout newnfsd_callout; 66 int nfsrv_lughashsize = 100; 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, nfs, CTLFLAG_RW, 0, "NFS filesystem"); 74 SYSCTL_INT(_vfs_nfs, OID_AUTO, realign_test, CTLFLAG_RW, &nfs_realign_test, 75 0, "Number of realign tests done"); 76 SYSCTL_INT(_vfs_nfs, OID_AUTO, realign_count, CTLFLAG_RW, &nfs_realign_count, 77 0, "Number of mbuf realignments done"); 78 SYSCTL_STRING(_vfs_nfs, OID_AUTO, callback_addr, CTLFLAG_RW, 79 nfsv4_callbackaddr, sizeof(nfsv4_callbackaddr), 80 "NFSv4 callback addr for server to use"); 81 SYSCTL_INT(_vfs_nfs, OID_AUTO, debuglevel, CTLFLAG_RW, &nfscl_debuglevel, 82 0, "Debug level for NFS client"); 83 SYSCTL_INT(_vfs_nfs, OID_AUTO, userhashsize, CTLFLAG_RDTUN, &nfsrv_lughashsize, 84 0, "Size of hash tables for uid/name mapping"); 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", "NFS vnode"); 107 MALLOC_DEFINE(M_NEWNFSDIRECTIO, "NEWdirectio", "NFS Direct IO buffer"); 108 MALLOC_DEFINE(M_NEWNFSDIROFF, "NFSCL diroffdiroff", 109 "NFS directory offset data"); 110 MALLOC_DEFINE(M_NEWNFSDROLLBACK, "NFSD rollback", 111 "NFS local lock rollback"); 112 MALLOC_DEFINE(M_NEWNFSLAYOUT, "NFSCL layout", "NFSv4.1 Layout"); 113 MALLOC_DEFINE(M_NEWNFSFLAYOUT, "NFSCL flayout", "NFSv4.1 File Layout"); 114 MALLOC_DEFINE(M_NEWNFSDEVINFO, "NFSCL devinfo", "NFSv4.1 Device Info"); 115 MALLOC_DEFINE(M_NEWNFSSOCKREQ, "NFSCL sockreq", "NFS Sock Req"); 116 MALLOC_DEFINE(M_NEWNFSCLDS, "NFSCL session", "NFSv4.1 Session"); 117 MALLOC_DEFINE(M_NEWNFSLAYRECALL, "NFSCL layrecall", "NFSv4.1 Layout Recall"); 118 MALLOC_DEFINE(M_NEWNFSDSESSION, "NFSD session", "NFSD Session for a client"); 119 120 /* 121 * Definition of mutex locks. 122 * newnfsd_mtx is used in nfsrvd_nfsd() to protect the nfs socket list 123 * and assorted other nfsd structures. 124 */ 125 struct mtx newnfsd_mtx; 126 struct mtx nfs_sockl_mutex; 127 struct mtx nfs_state_mutex; 128 struct mtx nfs_nameid_mutex; 129 struct mtx nfs_req_mutex; 130 struct mtx nfs_slock_mutex; 131 132 /* local functions */ 133 static int nfssvc_call(struct thread *, struct nfssvc_args *, struct ucred *); 134 135 #ifdef __NO_STRICT_ALIGNMENT 136 /* 137 * These architectures don't need re-alignment, so just return. 138 */ 139 int 140 newnfs_realign(struct mbuf **pm, int how) 141 { 142 143 return (0); 144 } 145 #else /* !__NO_STRICT_ALIGNMENT */ 146 /* 147 * newnfs_realign: 148 * 149 * Check for badly aligned mbuf data and realign by copying the unaligned 150 * portion of the data into a new mbuf chain and freeing the portions 151 * of the old chain that were replaced. 152 * 153 * We cannot simply realign the data within the existing mbuf chain 154 * because the underlying buffers may contain other rpc commands and 155 * we cannot afford to overwrite them. 156 * 157 * We would prefer to avoid this situation entirely. The situation does 158 * not occur with NFS/UDP and is supposed to only occasionally occur 159 * with TCP. Use vfs.nfs.realign_count and realign_test to check this. 160 * 161 */ 162 int 163 newnfs_realign(struct mbuf **pm, int how) 164 { 165 struct mbuf *m, *n; 166 int off, space; 167 168 ++nfs_realign_test; 169 while ((m = *pm) != NULL) { 170 if ((m->m_len & 0x3) || (mtod(m, intptr_t) & 0x3)) { 171 /* 172 * NB: we can't depend on m_pkthdr.len to help us 173 * decide what to do here. May not be worth doing 174 * the m_length calculation as m_copyback will 175 * expand the mbuf chain below as needed. 176 */ 177 space = m_length(m, NULL); 178 if (space >= MINCLSIZE) { 179 /* NB: m_copyback handles space > MCLBYTES */ 180 n = m_getcl(how, MT_DATA, 0); 181 } else 182 n = m_get(how, MT_DATA); 183 if (n == NULL) 184 return (ENOMEM); 185 /* 186 * Align the remainder of the mbuf chain. 187 */ 188 n->m_len = 0; 189 off = 0; 190 while (m != NULL) { 191 m_copyback(n, off, m->m_len, mtod(m, caddr_t)); 192 off += m->m_len; 193 m = m->m_next; 194 } 195 m_freem(*pm); 196 *pm = n; 197 ++nfs_realign_count; 198 break; 199 } 200 pm = &m->m_next; 201 } 202 203 return (0); 204 } 205 #endif /* __NO_STRICT_ALIGNMENT */ 206 207 #ifdef notdef 208 static void 209 nfsrv_object_create(struct vnode *vp, struct thread *td) 210 { 211 212 if (vp == NULL || vp->v_type != VREG) 213 return; 214 (void) vfs_object_create(vp, td, td->td_ucred); 215 } 216 #endif 217 218 /* 219 * Look up a file name. Basically just initialize stuff and call namei(). 220 */ 221 int 222 nfsrv_lookupfilename(struct nameidata *ndp, char *fname, NFSPROC_T *p) 223 { 224 int error; 225 226 NDINIT(ndp, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, fname, 227 p); 228 error = namei(ndp); 229 if (!error) { 230 NDFREE(ndp, NDF_ONLY_PNBUF); 231 } 232 return (error); 233 } 234 235 /* 236 * Copy NFS uid, gids to the cred structure. 237 */ 238 void 239 newnfs_copycred(struct nfscred *nfscr, struct ucred *cr) 240 { 241 242 KASSERT(nfscr->nfsc_ngroups >= 0, 243 ("newnfs_copycred: negative nfsc_ngroups")); 244 cr->cr_uid = nfscr->nfsc_uid; 245 crsetgroups(cr, nfscr->nfsc_ngroups, nfscr->nfsc_groups); 246 } 247 248 /* 249 * Map args from nfsmsleep() to msleep(). 250 */ 251 int 252 nfsmsleep(void *chan, void *mutex, int prio, const char *wmesg, 253 struct timespec *ts) 254 { 255 u_int64_t nsecval; 256 int error, timeo; 257 258 if (ts) { 259 timeo = hz * ts->tv_sec; 260 nsecval = (u_int64_t)ts->tv_nsec; 261 nsecval = ((nsecval * ((u_int64_t)hz)) + 500000000) / 262 1000000000; 263 timeo += (int)nsecval; 264 } else { 265 timeo = 0; 266 } 267 error = msleep(chan, (struct mtx *)mutex, prio, wmesg, timeo); 268 return (error); 269 } 270 271 /* 272 * Get the file system info for the server. For now, just assume FFS. 273 */ 274 void 275 nfsvno_getfs(struct nfsfsinfo *sip, int isdgram) 276 { 277 int pref; 278 279 /* 280 * XXX 281 * There should be file system VFS OP(s) to get this information. 282 * For now, assume ufs. 283 */ 284 if (isdgram) 285 pref = NFS_MAXDGRAMDATA; 286 else 287 pref = NFS_SRVMAXIO; 288 sip->fs_rtmax = NFS_SRVMAXIO; 289 sip->fs_rtpref = pref; 290 sip->fs_rtmult = NFS_FABLKSIZE; 291 sip->fs_wtmax = NFS_SRVMAXIO; 292 sip->fs_wtpref = pref; 293 sip->fs_wtmult = NFS_FABLKSIZE; 294 sip->fs_dtpref = pref; 295 sip->fs_maxfilesize = 0xffffffffffffffffull; 296 sip->fs_timedelta.tv_sec = 0; 297 sip->fs_timedelta.tv_nsec = 1; 298 sip->fs_properties = (NFSV3FSINFO_LINK | 299 NFSV3FSINFO_SYMLINK | NFSV3FSINFO_HOMOGENEOUS | 300 NFSV3FSINFO_CANSETTIME); 301 } 302 303 /* 304 * Do the pathconf vnode op. 305 */ 306 int 307 nfsvno_pathconf(struct vnode *vp, int flag, register_t *retf, 308 struct ucred *cred, struct thread *p) 309 { 310 int error; 311 312 error = VOP_PATHCONF(vp, flag, retf); 313 if (error == EOPNOTSUPP || error == EINVAL) { 314 /* 315 * Some file systems return EINVAL for name arguments not 316 * supported and some return EOPNOTSUPP for this case. 317 * So the NFSv3 Pathconf RPC doesn't fail for these cases, 318 * just fake them. 319 */ 320 switch (flag) { 321 case _PC_LINK_MAX: 322 *retf = LINK_MAX; 323 break; 324 case _PC_NAME_MAX: 325 *retf = NAME_MAX; 326 break; 327 case _PC_CHOWN_RESTRICTED: 328 *retf = 1; 329 break; 330 case _PC_NO_TRUNC: 331 *retf = 1; 332 break; 333 default: 334 /* 335 * Only happens if a _PC_xxx is added to the server, 336 * but this isn't updated. 337 */ 338 *retf = 0; 339 printf("nfsrvd pathconf flag=%d not supp\n", flag); 340 } 341 error = 0; 342 } 343 NFSEXITCODE(error); 344 return (error); 345 } 346 347 /* Fake nfsrv_atroot. Just return 0 */ 348 int 349 nfsrv_atroot(struct vnode *vp, long *retp) 350 { 351 352 return (0); 353 } 354 355 /* 356 * Set the credentials to refer to root. 357 * If only the various BSDen could agree on whether cr_gid is a separate 358 * field or cr_groups[0]... 359 */ 360 void 361 newnfs_setroot(struct ucred *cred) 362 { 363 364 cred->cr_uid = 0; 365 cred->cr_groups[0] = 0; 366 cred->cr_ngroups = 1; 367 } 368 369 /* 370 * Get the client credential. Used for Renew and recovery. 371 */ 372 struct ucred * 373 newnfs_getcred(void) 374 { 375 struct ucred *cred; 376 struct thread *td = curthread; 377 378 cred = crdup(td->td_ucred); 379 newnfs_setroot(cred); 380 return (cred); 381 } 382 383 /* 384 * Nfs timer routine 385 * Call the nfsd's timer function once/sec. 386 */ 387 void 388 newnfs_timer(void *arg) 389 { 390 static time_t lasttime = 0; 391 /* 392 * Call the server timer, if set up. 393 * The argument indicates if it is the next second and therefore 394 * leases should be checked. 395 */ 396 if (lasttime != NFSD_MONOSEC) { 397 lasttime = NFSD_MONOSEC; 398 if (nfsd_call_servertimer != NULL) 399 (*nfsd_call_servertimer)(); 400 } 401 callout_reset(&newnfsd_callout, nfscl_ticks, newnfs_timer, NULL); 402 } 403 404 405 /* 406 * Sleep for a short period of time unless errval == NFSERR_GRACE, where 407 * the sleep should be for 5 seconds. 408 * Since lbolt doesn't exist in FreeBSD-CURRENT, just use a timeout on 409 * an event that never gets a wakeup. Only return EINTR or 0. 410 */ 411 int 412 nfs_catnap(int prio, int errval, const char *wmesg) 413 { 414 static int non_event; 415 int ret; 416 417 if (errval == NFSERR_GRACE) 418 ret = tsleep(&non_event, prio, wmesg, 5 * hz); 419 else 420 ret = tsleep(&non_event, prio, wmesg, 1); 421 if (ret != EINTR) 422 ret = 0; 423 return (ret); 424 } 425 426 /* 427 * Get referral. For now, just fail. 428 */ 429 struct nfsreferral * 430 nfsv4root_getreferral(struct vnode *vp, struct vnode *dvp, u_int32_t fileno) 431 { 432 433 return (NULL); 434 } 435 436 static int 437 nfssvc_nfscommon(struct thread *td, struct nfssvc_args *uap) 438 { 439 int error; 440 441 error = nfssvc_call(td, uap, td->td_ucred); 442 NFSEXITCODE(error); 443 return (error); 444 } 445 446 static int 447 nfssvc_call(struct thread *p, struct nfssvc_args *uap, struct ucred *cred) 448 { 449 int error = EINVAL; 450 struct nfsd_idargs nid; 451 struct nfsd_oidargs onid; 452 453 if (uap->flag & NFSSVC_IDNAME) { 454 if ((uap->flag & NFSSVC_NEWSTRUCT) != 0) 455 error = copyin(uap->argp, &nid, sizeof(nid)); 456 else { 457 error = copyin(uap->argp, &onid, sizeof(onid)); 458 if (error == 0) { 459 nid.nid_flag = onid.nid_flag; 460 nid.nid_uid = onid.nid_uid; 461 nid.nid_gid = onid.nid_gid; 462 nid.nid_usermax = onid.nid_usermax; 463 nid.nid_usertimeout = onid.nid_usertimeout; 464 nid.nid_name = onid.nid_name; 465 nid.nid_namelen = onid.nid_namelen; 466 nid.nid_ngroup = 0; 467 nid.nid_grps = NULL; 468 } 469 } 470 if (error) 471 goto out; 472 error = nfssvc_idname(&nid); 473 goto out; 474 } else if (uap->flag & NFSSVC_GETSTATS) { 475 error = copyout(&newnfsstats, 476 CAST_USER_ADDR_T(uap->argp), sizeof (newnfsstats)); 477 if (error == 0) { 478 if ((uap->flag & NFSSVC_ZEROCLTSTATS) != 0) { 479 newnfsstats.attrcache_hits = 0; 480 newnfsstats.attrcache_misses = 0; 481 newnfsstats.lookupcache_hits = 0; 482 newnfsstats.lookupcache_misses = 0; 483 newnfsstats.direofcache_hits = 0; 484 newnfsstats.direofcache_misses = 0; 485 newnfsstats.accesscache_hits = 0; 486 newnfsstats.accesscache_misses = 0; 487 newnfsstats.biocache_reads = 0; 488 newnfsstats.read_bios = 0; 489 newnfsstats.read_physios = 0; 490 newnfsstats.biocache_writes = 0; 491 newnfsstats.write_bios = 0; 492 newnfsstats.write_physios = 0; 493 newnfsstats.biocache_readlinks = 0; 494 newnfsstats.readlink_bios = 0; 495 newnfsstats.biocache_readdirs = 0; 496 newnfsstats.readdir_bios = 0; 497 newnfsstats.rpcretries = 0; 498 newnfsstats.rpcrequests = 0; 499 newnfsstats.rpctimeouts = 0; 500 newnfsstats.rpcunexpected = 0; 501 newnfsstats.rpcinvalid = 0; 502 bzero(newnfsstats.rpccnt, 503 sizeof(newnfsstats.rpccnt)); 504 } 505 if ((uap->flag & NFSSVC_ZEROSRVSTATS) != 0) { 506 newnfsstats.srvrpc_errs = 0; 507 newnfsstats.srv_errs = 0; 508 newnfsstats.srvcache_inproghits = 0; 509 newnfsstats.srvcache_idemdonehits = 0; 510 newnfsstats.srvcache_nonidemdonehits = 0; 511 newnfsstats.srvcache_misses = 0; 512 newnfsstats.srvcache_tcppeak = 0; 513 newnfsstats.srvclients = 0; 514 newnfsstats.srvopenowners = 0; 515 newnfsstats.srvopens = 0; 516 newnfsstats.srvlockowners = 0; 517 newnfsstats.srvlocks = 0; 518 newnfsstats.srvdelegates = 0; 519 newnfsstats.clopenowners = 0; 520 newnfsstats.clopens = 0; 521 newnfsstats.cllockowners = 0; 522 newnfsstats.cllocks = 0; 523 newnfsstats.cldelegates = 0; 524 newnfsstats.cllocalopenowners = 0; 525 newnfsstats.cllocalopens = 0; 526 newnfsstats.cllocallockowners = 0; 527 newnfsstats.cllocallocks = 0; 528 bzero(newnfsstats.srvrpccnt, 529 sizeof(newnfsstats.srvrpccnt)); 530 bzero(newnfsstats.cbrpccnt, 531 sizeof(newnfsstats.cbrpccnt)); 532 } 533 } 534 goto out; 535 } else if (uap->flag & NFSSVC_NFSUSERDPORT) { 536 u_short sockport; 537 538 error = copyin(uap->argp, (caddr_t)&sockport, 539 sizeof (u_short)); 540 if (!error) 541 error = nfsrv_nfsuserdport(sockport, p); 542 } else if (uap->flag & NFSSVC_NFSUSERDDELPORT) { 543 nfsrv_nfsuserddelport(); 544 error = 0; 545 } 546 547 out: 548 NFSEXITCODE(error); 549 return (error); 550 } 551 552 /* 553 * called by all three modevent routines, so that it gets things 554 * initialized soon enough. 555 */ 556 void 557 newnfs_portinit(void) 558 { 559 static int inited = 0; 560 561 if (inited) 562 return; 563 inited = 1; 564 /* Initialize SMP locks used by both client and server. */ 565 mtx_init(&newnfsd_mtx, "newnfsd_mtx", NULL, MTX_DEF); 566 mtx_init(&nfs_state_mutex, "nfs_state_mutex", NULL, MTX_DEF); 567 } 568 569 /* 570 * Determine if the file system supports NFSv4 ACLs. 571 * Return 1 if it does, 0 otherwise. 572 */ 573 int 574 nfs_supportsnfsv4acls(struct vnode *vp) 575 { 576 int error; 577 register_t retval; 578 579 ASSERT_VOP_LOCKED(vp, "nfs supports nfsv4acls"); 580 581 if (nfsrv_useacl == 0) 582 return (0); 583 error = VOP_PATHCONF(vp, _PC_ACL_NFS4, &retval); 584 if (error == 0 && retval != 0) 585 return (1); 586 return (0); 587 } 588 589 extern int (*nfsd_call_nfscommon)(struct thread *, struct nfssvc_args *); 590 591 /* 592 * Called once to initialize data structures... 593 */ 594 static int 595 nfscommon_modevent(module_t mod, int type, void *data) 596 { 597 int error = 0; 598 static int loaded = 0; 599 600 switch (type) { 601 case MOD_LOAD: 602 if (loaded) 603 goto out; 604 newnfs_portinit(); 605 mtx_init(&nfs_nameid_mutex, "nfs_nameid_mutex", NULL, MTX_DEF); 606 mtx_init(&nfs_sockl_mutex, "nfs_sockl_mutex", NULL, MTX_DEF); 607 mtx_init(&nfs_slock_mutex, "nfs_slock_mutex", NULL, MTX_DEF); 608 mtx_init(&nfs_req_mutex, "nfs_req_mutex", NULL, MTX_DEF); 609 mtx_init(&nfsrv_nfsuserdsock.nr_mtx, "nfsuserd", NULL, 610 MTX_DEF); 611 callout_init(&newnfsd_callout, 1); 612 newnfs_init(); 613 nfsd_call_nfscommon = nfssvc_nfscommon; 614 loaded = 1; 615 break; 616 617 case MOD_UNLOAD: 618 if (newnfs_numnfsd != 0 || nfsrv_nfsuserd != 0 || 619 nfs_numnfscbd != 0) { 620 error = EBUSY; 621 break; 622 } 623 624 nfsd_call_nfscommon = NULL; 625 callout_drain(&newnfsd_callout); 626 /* Clean out the name<-->id cache. */ 627 nfsrv_cleanusergroup(); 628 /* and get rid of the mutexes */ 629 mtx_destroy(&nfs_nameid_mutex); 630 mtx_destroy(&newnfsd_mtx); 631 mtx_destroy(&nfs_state_mutex); 632 mtx_destroy(&nfs_sockl_mutex); 633 mtx_destroy(&nfs_slock_mutex); 634 mtx_destroy(&nfs_req_mutex); 635 mtx_destroy(&nfsrv_nfsuserdsock.nr_mtx); 636 loaded = 0; 637 break; 638 default: 639 error = EOPNOTSUPP; 640 break; 641 } 642 643 out: 644 NFSEXITCODE(error); 645 return error; 646 } 647 static moduledata_t nfscommon_mod = { 648 "nfscommon", 649 nfscommon_modevent, 650 NULL, 651 }; 652 DECLARE_MODULE(nfscommon, nfscommon_mod, SI_SUB_VFS, SI_ORDER_ANY); 653 654 /* So that loader and kldload(2) can find us, wherever we are.. */ 655 MODULE_VERSION(nfscommon, 1); 656 MODULE_DEPEND(nfscommon, nfssvc, 1, 1, 1); 657 MODULE_DEPEND(nfscommon, krpc, 1, 1, 1); 658
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