Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/fs/nfsserver/nfs_nfsdkrpc.c
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1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1989, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Rick Macklem at The University of Guelph. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 */ 35 36 #include <sys/cdefs.h> 37 __FBSDID("$FreeBSD$"); 38 39 #include "opt_inet6.h" 40 #include "opt_kgssapi.h" 41 #include "opt_kern_tls.h" 42 43 #include <fs/nfs/nfsport.h> 44 45 #include <rpc/rpc.h> 46 #include <rpc/rpcsec_gss.h> 47 #include <rpc/rpcsec_tls.h> 48 49 #include <fs/nfsserver/nfs_fha_new.h> 50 51 #include <security/mac/mac_framework.h> 52 53 NFSDLOCKMUTEX; 54 NFSV4ROOTLOCKMUTEX; 55 struct nfsv4lock nfsd_suspend_lock; 56 char *nfsrv_zeropnfsdat = NULL; 57 58 /* 59 * Mapping of old NFS Version 2 RPC numbers to generic numbers. 60 */ 61 int newnfs_nfsv3_procid[NFS_V3NPROCS] = { 62 NFSPROC_NULL, 63 NFSPROC_GETATTR, 64 NFSPROC_SETATTR, 65 NFSPROC_NOOP, 66 NFSPROC_LOOKUP, 67 NFSPROC_READLINK, 68 NFSPROC_READ, 69 NFSPROC_NOOP, 70 NFSPROC_WRITE, 71 NFSPROC_CREATE, 72 NFSPROC_REMOVE, 73 NFSPROC_RENAME, 74 NFSPROC_LINK, 75 NFSPROC_SYMLINK, 76 NFSPROC_MKDIR, 77 NFSPROC_RMDIR, 78 NFSPROC_READDIR, 79 NFSPROC_FSSTAT, 80 NFSPROC_NOOP, 81 NFSPROC_NOOP, 82 NFSPROC_NOOP, 83 NFSPROC_NOOP, 84 }; 85 86 SYSCTL_DECL(_vfs_nfsd); 87 88 SVCPOOL *nfsrvd_pool; 89 90 static int nfs_privport = 0; 91 SYSCTL_INT(_vfs_nfsd, OID_AUTO, nfs_privport, CTLFLAG_RWTUN, 92 &nfs_privport, 0, 93 "Only allow clients using a privileged port for NFSv2, 3 and 4"); 94 95 static int nfs_minvers = NFS_VER2; 96 SYSCTL_INT(_vfs_nfsd, OID_AUTO, server_min_nfsvers, CTLFLAG_RWTUN, 97 &nfs_minvers, 0, "The lowest version of NFS handled by the server"); 98 99 static int nfs_maxvers = NFS_VER4; 100 SYSCTL_INT(_vfs_nfsd, OID_AUTO, server_max_nfsvers, CTLFLAG_RWTUN, 101 &nfs_maxvers, 0, "The highest version of NFS handled by the server"); 102 103 static int nfs_proc(struct nfsrv_descript *, u_int32_t, SVCXPRT *xprt, 104 struct nfsrvcache **); 105 106 extern u_long sb_max_adj; 107 extern int newnfs_numnfsd; 108 extern struct proc *nfsd_master_proc; 109 extern time_t nfsdev_time; 110 extern int nfsrv_writerpc[NFS_NPROCS]; 111 extern volatile int nfsrv_devidcnt; 112 extern struct nfsv4_opflag nfsv4_opflag[NFSV42_NOPS]; 113 114 /* 115 * NFS server system calls 116 */ 117 118 static void 119 nfssvc_program(struct svc_req *rqst, SVCXPRT *xprt) 120 { 121 struct nfsrv_descript nd; 122 struct nfsrvcache *rp = NULL; 123 int cacherep, credflavor; 124 #ifdef KERN_TLS 125 u_int maxlen; 126 #endif 127 128 memset(&nd, 0, sizeof(nd)); 129 if (rqst->rq_vers == NFS_VER2) { 130 if (rqst->rq_proc > NFSV2PROC_STATFS || 131 newnfs_nfsv3_procid[rqst->rq_proc] == NFSPROC_NOOP) { 132 svcerr_noproc(rqst); 133 svc_freereq(rqst); 134 goto out; 135 } 136 nd.nd_procnum = newnfs_nfsv3_procid[rqst->rq_proc]; 137 nd.nd_flag = ND_NFSV2; 138 } else if (rqst->rq_vers == NFS_VER3) { 139 if (rqst->rq_proc >= NFS_V3NPROCS) { 140 svcerr_noproc(rqst); 141 svc_freereq(rqst); 142 goto out; 143 } 144 nd.nd_procnum = rqst->rq_proc; 145 nd.nd_flag = ND_NFSV3; 146 } else { 147 if (rqst->rq_proc != NFSPROC_NULL && 148 rqst->rq_proc != NFSV4PROC_COMPOUND) { 149 svcerr_noproc(rqst); 150 svc_freereq(rqst); 151 goto out; 152 } 153 nd.nd_procnum = rqst->rq_proc; 154 nd.nd_flag = ND_NFSV4; 155 } 156 157 /* 158 * Note: we want rq_addr, not svc_getrpccaller for nd_nam2 - 159 * NFS_SRVMAXDATA uses a NULL value for nd_nam2 to detect TCP 160 * mounts. 161 */ 162 nd.nd_mrep = rqst->rq_args; 163 rqst->rq_args = NULL; 164 newnfs_realign(&nd.nd_mrep, M_WAITOK); 165 nd.nd_md = nd.nd_mrep; 166 nd.nd_dpos = mtod(nd.nd_md, caddr_t); 167 nd.nd_nam = svc_getrpccaller(rqst); 168 nd.nd_nam2 = rqst->rq_addr; 169 nd.nd_mreq = NULL; 170 nd.nd_cred = NULL; 171 172 if (nfs_privport != 0) { 173 /* Check if source port is privileged */ 174 u_short port; 175 struct sockaddr *nam = nd.nd_nam; 176 struct sockaddr_in *sin; 177 178 sin = (struct sockaddr_in *)nam; 179 /* 180 * INET/INET6 - same code: 181 * sin_port and sin6_port are at same offset 182 */ 183 port = ntohs(sin->sin_port); 184 if (port >= IPPORT_RESERVED && 185 nd.nd_procnum != NFSPROC_NULL) { 186 #ifdef INET6 187 char buf[INET6_ADDRSTRLEN]; 188 #else 189 char buf[INET_ADDRSTRLEN]; 190 #endif 191 #ifdef INET6 192 #if defined(KLD_MODULE) 193 /* Do not use ip6_sprintf: the nfs module should work without INET6. */ 194 #define ip6_sprintf(buf, a) \ 195 (sprintf((buf), "%x:%x:%x:%x:%x:%x:%x:%x", \ 196 (a)->s6_addr16[0], (a)->s6_addr16[1], \ 197 (a)->s6_addr16[2], (a)->s6_addr16[3], \ 198 (a)->s6_addr16[4], (a)->s6_addr16[5], \ 199 (a)->s6_addr16[6], (a)->s6_addr16[7]), \ 200 (buf)) 201 #endif 202 #endif 203 printf("NFS request from unprivileged port (%s:%d)\n", 204 #ifdef INET6 205 sin->sin_family == AF_INET6 ? 206 ip6_sprintf(buf, &satosin6(sin)->sin6_addr) : 207 #if defined(KLD_MODULE) 208 #undef ip6_sprintf 209 #endif 210 #endif 211 inet_ntoa_r(sin->sin_addr, buf), port); 212 svcerr_weakauth(rqst); 213 svc_freereq(rqst); 214 m_freem(nd.nd_mrep); 215 goto out; 216 } 217 } 218 219 if (nd.nd_procnum != NFSPROC_NULL) { 220 if (!svc_getcred(rqst, &nd.nd_cred, &credflavor)) { 221 svcerr_weakauth(rqst); 222 svc_freereq(rqst); 223 m_freem(nd.nd_mrep); 224 goto out; 225 } 226 227 /* Set the flag based on credflavor */ 228 if (credflavor == RPCSEC_GSS_KRB5) { 229 nd.nd_flag |= ND_GSS; 230 } else if (credflavor == RPCSEC_GSS_KRB5I) { 231 nd.nd_flag |= (ND_GSS | ND_GSSINTEGRITY); 232 } else if (credflavor == RPCSEC_GSS_KRB5P) { 233 nd.nd_flag |= (ND_GSS | ND_GSSPRIVACY); 234 } else if (credflavor != AUTH_SYS) { 235 svcerr_weakauth(rqst); 236 svc_freereq(rqst); 237 m_freem(nd.nd_mrep); 238 goto out; 239 } 240 241 if ((xprt->xp_tls & RPCTLS_FLAGS_HANDSHAKE) != 0) { 242 nd.nd_flag |= ND_TLS; 243 if ((xprt->xp_tls & RPCTLS_FLAGS_VERIFIED) != 0) 244 nd.nd_flag |= ND_TLSCERT; 245 if ((xprt->xp_tls & RPCTLS_FLAGS_CERTUSER) != 0) 246 nd.nd_flag |= ND_TLSCERTUSER; 247 } 248 nd.nd_maxextsiz = 16384; 249 #ifdef MAC 250 mac_cred_associate_nfsd(nd.nd_cred); 251 #endif 252 /* 253 * Get a refcnt (shared lock) on nfsd_suspend_lock. 254 * NFSSVC_SUSPENDNFSD will take an exclusive lock on 255 * nfsd_suspend_lock to suspend these threads. 256 * The call to nfsv4_lock() that precedes nfsv4_getref() 257 * ensures that the acquisition of the exclusive lock 258 * takes priority over acquisition of the shared lock by 259 * waiting for any exclusive lock request to complete. 260 * This must be done here, before the check of 261 * nfsv4root exports by nfsvno_v4rootexport(). 262 */ 263 NFSLOCKV4ROOTMUTEX(); 264 nfsv4_lock(&nfsd_suspend_lock, 0, NULL, NFSV4ROOTLOCKMUTEXPTR, 265 NULL); 266 nfsv4_getref(&nfsd_suspend_lock, NULL, NFSV4ROOTLOCKMUTEXPTR, 267 NULL); 268 NFSUNLOCKV4ROOTMUTEX(); 269 270 if ((nd.nd_flag & ND_NFSV4) != 0) { 271 nd.nd_repstat = nfsvno_v4rootexport(&nd); 272 if (nd.nd_repstat != 0) { 273 NFSLOCKV4ROOTMUTEX(); 274 nfsv4_relref(&nfsd_suspend_lock); 275 NFSUNLOCKV4ROOTMUTEX(); 276 svcerr_weakauth(rqst); 277 svc_freereq(rqst); 278 m_freem(nd.nd_mrep); 279 goto out; 280 } 281 } 282 283 #ifdef KERN_TLS 284 if ((xprt->xp_tls & RPCTLS_FLAGS_HANDSHAKE) != 0 && 285 rpctls_getinfo(&maxlen, false, false)) 286 nd.nd_maxextsiz = maxlen; 287 #endif 288 cacherep = nfs_proc(&nd, rqst->rq_xid, xprt, &rp); 289 NFSLOCKV4ROOTMUTEX(); 290 nfsv4_relref(&nfsd_suspend_lock); 291 NFSUNLOCKV4ROOTMUTEX(); 292 } else { 293 NFSMGET(nd.nd_mreq); 294 nd.nd_mreq->m_len = 0; 295 cacherep = RC_REPLY; 296 } 297 if (nd.nd_mrep != NULL) 298 m_freem(nd.nd_mrep); 299 300 if (nd.nd_cred != NULL) 301 crfree(nd.nd_cred); 302 303 if (cacherep == RC_DROPIT) { 304 if (nd.nd_mreq != NULL) 305 m_freem(nd.nd_mreq); 306 svc_freereq(rqst); 307 goto out; 308 } 309 310 if (nd.nd_mreq == NULL) { 311 svcerr_decode(rqst); 312 svc_freereq(rqst); 313 goto out; 314 } 315 316 if (nd.nd_repstat & NFSERR_AUTHERR) { 317 svcerr_auth(rqst, nd.nd_repstat & ~NFSERR_AUTHERR); 318 if (nd.nd_mreq != NULL) 319 m_freem(nd.nd_mreq); 320 } else if (!svc_sendreply_mbuf(rqst, nd.nd_mreq)) { 321 svcerr_systemerr(rqst); 322 } 323 if (rp != NULL) { 324 nfsrvd_sentcache(rp, (rqst->rq_reply_seq != 0 || 325 SVC_ACK(xprt, NULL)), rqst->rq_reply_seq); 326 } 327 svc_freereq(rqst); 328 329 out: 330 ast_kclear(curthread); 331 NFSEXITCODE(0); 332 } 333 334 /* 335 * Check the cache and, optionally, do the RPC. 336 * Return the appropriate cache response. 337 */ 338 static int 339 nfs_proc(struct nfsrv_descript *nd, u_int32_t xid, SVCXPRT *xprt, 340 struct nfsrvcache **rpp) 341 { 342 int cacherep = RC_DOIT, isdgram, taglen = -1; 343 struct mbuf *m; 344 u_char tag[NFSV4_SMALLSTR + 1], *tagstr = NULL; 345 u_int32_t minorvers = 0; 346 uint32_t ack; 347 348 *rpp = NULL; 349 if (nd->nd_nam2 == NULL) { 350 nd->nd_flag |= ND_STREAMSOCK; 351 isdgram = 0; 352 } else { 353 isdgram = 1; 354 } 355 356 /* 357 * Two cases: 358 * 1 - For NFSv2 over UDP, if we are near our malloc/mget 359 * limit, just drop the request. There is no 360 * NFSERR_RESOURCE or NFSERR_DELAY for NFSv2 and the 361 * client will timeout/retry over UDP in a little while. 362 * 2 - nd_repstat == 0 && nd_mreq == NULL, which 363 * means a normal nfs rpc, so check the cache 364 */ 365 if ((nd->nd_flag & ND_NFSV2) && nd->nd_nam2 != NULL && 366 nfsrv_mallocmget_limit()) { 367 cacherep = RC_DROPIT; 368 } else { 369 /* 370 * For NFSv3, play it safe and assume that the client is 371 * doing retries on the same TCP connection. 372 */ 373 if ((nd->nd_flag & (ND_NFSV4 | ND_STREAMSOCK)) == 374 ND_STREAMSOCK) 375 nd->nd_flag |= ND_SAMETCPCONN; 376 nd->nd_retxid = xid; 377 nd->nd_tcpconntime = NFSD_MONOSEC; 378 nd->nd_sockref = xprt->xp_sockref; 379 if ((nd->nd_flag & ND_NFSV4) != 0) 380 nfsd_getminorvers(nd, tag, &tagstr, &taglen, 381 &minorvers); 382 if ((nd->nd_flag & ND_NFSV41) != 0) 383 /* NFSv4.1 caches replies in the session slots. */ 384 cacherep = RC_DOIT; 385 else { 386 cacherep = nfsrvd_getcache(nd); 387 ack = 0; 388 SVC_ACK(xprt, &ack); 389 nfsrc_trimcache(xprt->xp_sockref, ack, 0); 390 } 391 } 392 393 /* 394 * Handle the request. There are three cases. 395 * RC_DOIT - do the RPC 396 * RC_REPLY - return the reply already created 397 * RC_DROPIT - just throw the request away 398 */ 399 if (cacherep == RC_DOIT) { 400 if ((nd->nd_flag & ND_NFSV41) != 0) 401 nd->nd_xprt = xprt; 402 nfsrvd_dorpc(nd, isdgram, tagstr, taglen, minorvers); 403 if ((nd->nd_flag & ND_NFSV41) != 0) { 404 if (nd->nd_repstat != NFSERR_REPLYFROMCACHE && 405 (nd->nd_flag & ND_SAVEREPLY) != 0) { 406 /* Cache a copy of the reply. */ 407 m = m_copym(nd->nd_mreq, 0, M_COPYALL, 408 M_WAITOK); 409 } else 410 m = NULL; 411 if ((nd->nd_flag & ND_HASSEQUENCE) != 0) 412 nfsrv_cache_session(nd, &m); 413 if (nd->nd_repstat == NFSERR_REPLYFROMCACHE) { 414 nd->nd_repstat = 0; 415 if (m != NULL) { 416 m_freem(nd->nd_mreq); 417 nd->nd_mreq = m; 418 } 419 } 420 cacherep = RC_REPLY; 421 } else { 422 if (nd->nd_repstat == NFSERR_DONTREPLY) 423 cacherep = RC_DROPIT; 424 else 425 cacherep = RC_REPLY; 426 *rpp = nfsrvd_updatecache(nd); 427 } 428 } 429 if (tagstr != NULL && taglen > NFSV4_SMALLSTR) 430 free(tagstr, M_TEMP); 431 432 NFSEXITCODE2(0, nd); 433 return (cacherep); 434 } 435 436 static void 437 nfssvc_loss(SVCXPRT *xprt) 438 { 439 uint32_t ack; 440 441 ack = 0; 442 SVC_ACK(xprt, &ack); 443 nfsrc_trimcache(xprt->xp_sockref, ack, 1); 444 } 445 446 /* 447 * Adds a socket to the list for servicing by nfsds. 448 */ 449 int 450 nfsrvd_addsock(struct file *fp) 451 { 452 int siz; 453 struct socket *so; 454 int error = 0; 455 SVCXPRT *xprt; 456 static u_int64_t sockref = 0; 457 458 so = fp->f_data; 459 460 siz = sb_max_adj; 461 error = soreserve(so, siz, siz); 462 if (error) 463 goto out; 464 465 /* 466 * Steal the socket from userland so that it doesn't close 467 * unexpectedly. 468 */ 469 if (so->so_type == SOCK_DGRAM) 470 xprt = svc_dg_create(nfsrvd_pool, so, 0, 0); 471 else 472 xprt = svc_vc_create(nfsrvd_pool, so, 0, 0); 473 if (xprt) { 474 fp->f_ops = &badfileops; 475 fp->f_data = NULL; 476 xprt->xp_sockref = ++sockref; 477 if (nfs_minvers == NFS_VER2) 478 svc_reg(xprt, NFS_PROG, NFS_VER2, nfssvc_program, 479 NULL); 480 if (nfs_minvers <= NFS_VER3 && nfs_maxvers >= NFS_VER3) 481 svc_reg(xprt, NFS_PROG, NFS_VER3, nfssvc_program, 482 NULL); 483 if (nfs_maxvers >= NFS_VER4) 484 svc_reg(xprt, NFS_PROG, NFS_VER4, nfssvc_program, 485 NULL); 486 if (so->so_type == SOCK_STREAM) 487 svc_loss_reg(xprt, nfssvc_loss); 488 SVC_RELEASE(xprt); 489 } 490 491 out: 492 NFSEXITCODE(error); 493 return (error); 494 } 495 496 /* 497 * Called by nfssvc() for nfsds. Just loops around servicing rpc requests 498 * until it is killed by a signal. 499 */ 500 int 501 nfsrvd_nfsd(struct thread *td, struct nfsd_nfsd_args *args) 502 { 503 char principal[MAXHOSTNAMELEN + 5]; 504 struct proc *p; 505 int error = 0; 506 bool_t ret2, ret3, ret4; 507 508 error = copyinstr(args->principal, principal, sizeof (principal), 509 NULL); 510 if (error) 511 goto out; 512 513 /* 514 * Only the first nfsd actually does any work. The RPC code 515 * adds threads to it as needed. Any extra processes offered 516 * by nfsd just exit. If nfsd is new enough, it will call us 517 * once with a structure that specifies how many threads to 518 * use. 519 */ 520 NFSD_LOCK(); 521 if (newnfs_numnfsd == 0) { 522 nfsdev_time = time_second; 523 p = td->td_proc; 524 PROC_LOCK(p); 525 p->p_flag2 |= P2_AST_SU; 526 PROC_UNLOCK(p); 527 newnfs_numnfsd++; 528 529 NFSD_UNLOCK(); 530 error = nfsrv_createdevids(args, td); 531 if (error == 0) { 532 /* An empty string implies AUTH_SYS only. */ 533 if (principal[0] != '\0') { 534 ret2 = rpc_gss_set_svc_name_call(principal, 535 "kerberosv5", GSS_C_INDEFINITE, NFS_PROG, 536 NFS_VER2); 537 ret3 = rpc_gss_set_svc_name_call(principal, 538 "kerberosv5", GSS_C_INDEFINITE, NFS_PROG, 539 NFS_VER3); 540 ret4 = rpc_gss_set_svc_name_call(principal, 541 "kerberosv5", GSS_C_INDEFINITE, NFS_PROG, 542 NFS_VER4); 543 544 if (!ret2 || !ret3 || !ret4) 545 printf( 546 "nfsd: can't register svc name\n"); 547 } 548 549 nfsrvd_pool->sp_minthreads = args->minthreads; 550 nfsrvd_pool->sp_maxthreads = args->maxthreads; 551 552 /* 553 * If this is a pNFS service, make Getattr do a 554 * vn_start_write(), so it can do a vn_set_extattr(). 555 */ 556 if (nfsrv_devidcnt > 0) { 557 nfsrv_writerpc[NFSPROC_GETATTR] = 1; 558 nfsv4_opflag[NFSV4OP_GETATTR].modifyfs = 1; 559 } 560 561 svc_run(nfsrvd_pool); 562 563 /* Reset Getattr to not do a vn_start_write(). */ 564 nfsrv_writerpc[NFSPROC_GETATTR] = 0; 565 nfsv4_opflag[NFSV4OP_GETATTR].modifyfs = 0; 566 567 if (principal[0] != '\0') { 568 rpc_gss_clear_svc_name_call(NFS_PROG, NFS_VER2); 569 rpc_gss_clear_svc_name_call(NFS_PROG, NFS_VER3); 570 rpc_gss_clear_svc_name_call(NFS_PROG, NFS_VER4); 571 } 572 } 573 NFSD_LOCK(); 574 newnfs_numnfsd--; 575 nfsrvd_init(1); 576 PROC_LOCK(p); 577 p->p_flag2 &= ~P2_AST_SU; 578 PROC_UNLOCK(p); 579 } 580 NFSD_UNLOCK(); 581 582 out: 583 NFSEXITCODE(error); 584 return (error); 585 } 586 587 /* 588 * Initialize the data structures for the server. 589 * Handshake with any new nfsds starting up to avoid any chance of 590 * corruption. 591 */ 592 void 593 nfsrvd_init(int terminating) 594 { 595 596 NFSD_LOCK_ASSERT(); 597 598 if (terminating) { 599 nfsd_master_proc = NULL; 600 NFSD_UNLOCK(); 601 nfsrv_freealllayoutsanddevids(); 602 nfsrv_freeallbackchannel_xprts(); 603 svcpool_close(nfsrvd_pool); 604 free(nfsrv_zeropnfsdat, M_TEMP); 605 nfsrv_zeropnfsdat = NULL; 606 NFSD_LOCK(); 607 } else { 608 NFSD_UNLOCK(); 609 nfsrvd_pool = svcpool_create("nfsd", 610 SYSCTL_STATIC_CHILDREN(_vfs_nfsd)); 611 nfsrvd_pool->sp_rcache = NULL; 612 nfsrvd_pool->sp_assign = fhanew_assign; 613 nfsrvd_pool->sp_done = fhanew_nd_complete; 614 NFSD_LOCK(); 615 } 616 }
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