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 char *nfsrv_zeropnfsdat = NULL; 56 57 /* 58 * Mapping of old NFS Version 2 RPC numbers to generic numbers. 59 */ 60 int newnfs_nfsv3_procid[NFS_V3NPROCS] = { 61 NFSPROC_NULL, 62 NFSPROC_GETATTR, 63 NFSPROC_SETATTR, 64 NFSPROC_NOOP, 65 NFSPROC_LOOKUP, 66 NFSPROC_READLINK, 67 NFSPROC_READ, 68 NFSPROC_NOOP, 69 NFSPROC_WRITE, 70 NFSPROC_CREATE, 71 NFSPROC_REMOVE, 72 NFSPROC_RENAME, 73 NFSPROC_LINK, 74 NFSPROC_SYMLINK, 75 NFSPROC_MKDIR, 76 NFSPROC_RMDIR, 77 NFSPROC_READDIR, 78 NFSPROC_FSSTAT, 79 NFSPROC_NOOP, 80 NFSPROC_NOOP, 81 NFSPROC_NOOP, 82 NFSPROC_NOOP, 83 }; 84 85 SYSCTL_DECL(_vfs_nfsd); 86 87 NFSD_VNET_DEFINE_STATIC(int, nfs_privport) = 0; 88 SYSCTL_INT(_vfs_nfsd, OID_AUTO, nfs_privport, CTLFLAG_NFSD_VNET | CTLFLAG_RWTUN, 89 &NFSD_VNET_NAME(nfs_privport), 0, 90 "Only allow clients using a privileged port for NFSv2, 3 and 4"); 91 92 NFSD_VNET_DEFINE_STATIC(int, nfs_minvers) = NFS_VER2; 93 SYSCTL_INT(_vfs_nfsd, OID_AUTO, server_min_nfsvers, 94 CTLFLAG_NFSD_VNET | CTLFLAG_RWTUN, &NFSD_VNET_NAME(nfs_minvers), 0, 95 "The lowest version of NFS handled by the server"); 96 97 NFSD_VNET_DEFINE_STATIC(int, nfs_maxvers) = NFS_VER4; 98 SYSCTL_INT(_vfs_nfsd, OID_AUTO, server_max_nfsvers, 99 CTLFLAG_NFSD_VNET | CTLFLAG_RWTUN, &NFSD_VNET_NAME(nfs_maxvers), 0, 100 "The highest version of NFS handled by the server"); 101 102 static int nfs_proc(struct nfsrv_descript *, u_int32_t, SVCXPRT *xprt, 103 struct nfsrvcache **); 104 105 extern u_long sb_max_adj; 106 extern int newnfs_numnfsd; 107 extern time_t nfsdev_time; 108 extern int nfsrv_writerpc[NFS_NPROCS]; 109 extern volatile int nfsrv_devidcnt; 110 extern struct nfsv4_opflag nfsv4_opflag[NFSV42_NOPS]; 111 112 NFSD_VNET_DECLARE(struct proc *, nfsd_master_proc); 113 114 NFSD_VNET_DEFINE(SVCPOOL *, nfsrvd_pool); 115 NFSD_VNET_DEFINE(int, nfsrv_numnfsd) = 0; 116 NFSD_VNET_DEFINE(struct nfsv4lock, nfsd_suspend_lock); 117 118 NFSD_VNET_DEFINE_STATIC(bool, nfsrvd_inited) = false; 119 120 /* 121 * NFS server system calls 122 */ 123 124 static void 125 nfssvc_program(struct svc_req *rqst, SVCXPRT *xprt) 126 { 127 struct nfsrv_descript nd; 128 struct nfsrvcache *rp = NULL; 129 int cacherep, credflavor; 130 #ifdef KERN_TLS 131 u_int maxlen; 132 #endif 133 134 NFSD_CURVNET_SET_QUIET(NFSD_TD_TO_VNET(curthread)); 135 memset(&nd, 0, sizeof(nd)); 136 if (rqst->rq_vers == NFS_VER2) { 137 if (rqst->rq_proc > NFSV2PROC_STATFS || 138 newnfs_nfsv3_procid[rqst->rq_proc] == NFSPROC_NOOP) { 139 svcerr_noproc(rqst); 140 svc_freereq(rqst); 141 goto out; 142 } 143 nd.nd_procnum = newnfs_nfsv3_procid[rqst->rq_proc]; 144 nd.nd_flag = ND_NFSV2; 145 } else if (rqst->rq_vers == NFS_VER3) { 146 if (rqst->rq_proc >= NFS_V3NPROCS) { 147 svcerr_noproc(rqst); 148 svc_freereq(rqst); 149 goto out; 150 } 151 nd.nd_procnum = rqst->rq_proc; 152 nd.nd_flag = ND_NFSV3; 153 } else { 154 if (rqst->rq_proc != NFSPROC_NULL && 155 rqst->rq_proc != NFSV4PROC_COMPOUND) { 156 svcerr_noproc(rqst); 157 svc_freereq(rqst); 158 goto out; 159 } 160 nd.nd_procnum = rqst->rq_proc; 161 nd.nd_flag = ND_NFSV4; 162 } 163 164 /* 165 * Note: we want rq_addr, not svc_getrpccaller for nd_nam2 - 166 * NFS_SRVMAXDATA uses a NULL value for nd_nam2 to detect TCP 167 * mounts. 168 */ 169 nd.nd_mrep = rqst->rq_args; 170 rqst->rq_args = NULL; 171 newnfs_realign(&nd.nd_mrep, M_WAITOK); 172 nd.nd_md = nd.nd_mrep; 173 nd.nd_dpos = mtod(nd.nd_md, caddr_t); 174 nd.nd_nam = svc_getrpccaller(rqst); 175 nd.nd_nam2 = rqst->rq_addr; 176 nd.nd_mreq = NULL; 177 nd.nd_cred = NULL; 178 179 if (NFSD_VNET(nfs_privport) != 0) { 180 /* Check if source port is privileged */ 181 u_short port; 182 struct sockaddr *nam = nd.nd_nam; 183 struct sockaddr_in *sin; 184 185 sin = (struct sockaddr_in *)nam; 186 /* 187 * INET/INET6 - same code: 188 * sin_port and sin6_port are at same offset 189 */ 190 port = ntohs(sin->sin_port); 191 if (port >= IPPORT_RESERVED && 192 nd.nd_procnum != NFSPROC_NULL) { 193 #ifdef INET6 194 char buf[INET6_ADDRSTRLEN]; 195 #else 196 char buf[INET_ADDRSTRLEN]; 197 #endif 198 #ifdef INET6 199 #if defined(KLD_MODULE) 200 /* Do not use ip6_sprintf: the nfs module should work without INET6. */ 201 #define ip6_sprintf(buf, a) \ 202 (sprintf((buf), "%x:%x:%x:%x:%x:%x:%x:%x", \ 203 (a)->s6_addr16[0], (a)->s6_addr16[1], \ 204 (a)->s6_addr16[2], (a)->s6_addr16[3], \ 205 (a)->s6_addr16[4], (a)->s6_addr16[5], \ 206 (a)->s6_addr16[6], (a)->s6_addr16[7]), \ 207 (buf)) 208 #endif 209 #endif 210 printf("NFS request from unprivileged port (%s:%d)\n", 211 #ifdef INET6 212 sin->sin_family == AF_INET6 ? 213 ip6_sprintf(buf, &satosin6(sin)->sin6_addr) : 214 #if defined(KLD_MODULE) 215 #undef ip6_sprintf 216 #endif 217 #endif 218 inet_ntoa_r(sin->sin_addr, buf), port); 219 svcerr_weakauth(rqst); 220 svc_freereq(rqst); 221 m_freem(nd.nd_mrep); 222 goto out; 223 } 224 } 225 226 if (nd.nd_procnum != NFSPROC_NULL) { 227 if (!svc_getcred(rqst, &nd.nd_cred, &credflavor)) { 228 svcerr_weakauth(rqst); 229 svc_freereq(rqst); 230 m_freem(nd.nd_mrep); 231 goto out; 232 } 233 234 /* Set the flag based on credflavor */ 235 if (credflavor == RPCSEC_GSS_KRB5) { 236 nd.nd_flag |= ND_GSS; 237 } else if (credflavor == RPCSEC_GSS_KRB5I) { 238 nd.nd_flag |= (ND_GSS | ND_GSSINTEGRITY); 239 } else if (credflavor == RPCSEC_GSS_KRB5P) { 240 nd.nd_flag |= (ND_GSS | ND_GSSPRIVACY); 241 } else if (credflavor != AUTH_SYS) { 242 svcerr_weakauth(rqst); 243 svc_freereq(rqst); 244 m_freem(nd.nd_mrep); 245 goto out; 246 } 247 248 if ((xprt->xp_tls & RPCTLS_FLAGS_HANDSHAKE) != 0) { 249 nd.nd_flag |= ND_TLS; 250 if ((xprt->xp_tls & RPCTLS_FLAGS_VERIFIED) != 0) 251 nd.nd_flag |= ND_TLSCERT; 252 if ((xprt->xp_tls & RPCTLS_FLAGS_CERTUSER) != 0) 253 nd.nd_flag |= ND_TLSCERTUSER; 254 } 255 nd.nd_maxextsiz = 16384; 256 #ifdef MAC 257 mac_cred_associate_nfsd(nd.nd_cred); 258 #endif 259 /* 260 * Get a refcnt (shared lock) on nfsd_suspend_lock. 261 * NFSSVC_SUSPENDNFSD will take an exclusive lock on 262 * nfsd_suspend_lock to suspend these threads. 263 * The call to nfsv4_lock() that precedes nfsv4_getref() 264 * ensures that the acquisition of the exclusive lock 265 * takes priority over acquisition of the shared lock by 266 * waiting for any exclusive lock request to complete. 267 * This must be done here, before the check of 268 * nfsv4root exports by nfsvno_v4rootexport(). 269 */ 270 NFSLOCKV4ROOTMUTEX(); 271 nfsv4_lock(&NFSD_VNET(nfsd_suspend_lock), 0, NULL, 272 NFSV4ROOTLOCKMUTEXPTR, NULL); 273 nfsv4_getref(&NFSD_VNET(nfsd_suspend_lock), NULL, 274 NFSV4ROOTLOCKMUTEXPTR, NULL); 275 NFSUNLOCKV4ROOTMUTEX(); 276 277 if ((nd.nd_flag & ND_NFSV4) != 0) { 278 nd.nd_repstat = nfsvno_v4rootexport(&nd); 279 if (nd.nd_repstat != 0) { 280 NFSLOCKV4ROOTMUTEX(); 281 nfsv4_relref(&NFSD_VNET(nfsd_suspend_lock)); 282 NFSUNLOCKV4ROOTMUTEX(); 283 svcerr_weakauth(rqst); 284 svc_freereq(rqst); 285 m_freem(nd.nd_mrep); 286 goto out; 287 } 288 } 289 290 #ifdef KERN_TLS 291 if ((xprt->xp_tls & RPCTLS_FLAGS_HANDSHAKE) != 0 && 292 rpctls_getinfo(&maxlen, false, false)) 293 nd.nd_maxextsiz = maxlen; 294 #endif 295 cacherep = nfs_proc(&nd, rqst->rq_xid, xprt, &rp); 296 NFSLOCKV4ROOTMUTEX(); 297 nfsv4_relref(&NFSD_VNET(nfsd_suspend_lock)); 298 NFSUNLOCKV4ROOTMUTEX(); 299 } else { 300 NFSMGET(nd.nd_mreq); 301 nd.nd_mreq->m_len = 0; 302 cacherep = RC_REPLY; 303 } 304 if (nd.nd_mrep != NULL) 305 m_freem(nd.nd_mrep); 306 307 if (nd.nd_cred != NULL) 308 crfree(nd.nd_cred); 309 310 if (cacherep == RC_DROPIT) { 311 if (nd.nd_mreq != NULL) 312 m_freem(nd.nd_mreq); 313 svc_freereq(rqst); 314 goto out; 315 } 316 317 if (nd.nd_mreq == NULL) { 318 svcerr_decode(rqst); 319 svc_freereq(rqst); 320 goto out; 321 } 322 323 if (nd.nd_repstat & NFSERR_AUTHERR) { 324 svcerr_auth(rqst, nd.nd_repstat & ~NFSERR_AUTHERR); 325 if (nd.nd_mreq != NULL) 326 m_freem(nd.nd_mreq); 327 } else if (!svc_sendreply_mbuf(rqst, nd.nd_mreq)) { 328 svcerr_systemerr(rqst); 329 } 330 if (rp != NULL) { 331 nfsrvd_sentcache(rp, (rqst->rq_reply_seq != 0 || 332 SVC_ACK(xprt, NULL)), rqst->rq_reply_seq); 333 } 334 svc_freereq(rqst); 335 336 out: 337 NFSD_CURVNET_RESTORE(); 338 ast_kclear(curthread); 339 NFSEXITCODE(0); 340 } 341 342 /* 343 * Check the cache and, optionally, do the RPC. 344 * Return the appropriate cache response. 345 */ 346 static int 347 nfs_proc(struct nfsrv_descript *nd, u_int32_t xid, SVCXPRT *xprt, 348 struct nfsrvcache **rpp) 349 { 350 int cacherep = RC_DOIT, isdgram, taglen = -1; 351 struct mbuf *m; 352 u_char tag[NFSV4_SMALLSTR + 1], *tagstr = NULL; 353 u_int32_t minorvers = 0; 354 uint32_t ack; 355 356 *rpp = NULL; 357 if (nd->nd_nam2 == NULL) { 358 nd->nd_flag |= ND_STREAMSOCK; 359 isdgram = 0; 360 } else { 361 isdgram = 1; 362 } 363 364 /* 365 * Two cases: 366 * 1 - For NFSv2 over UDP, if we are near our malloc/mget 367 * limit, just drop the request. There is no 368 * NFSERR_RESOURCE or NFSERR_DELAY for NFSv2 and the 369 * client will timeout/retry over UDP in a little while. 370 * 2 - nd_repstat == 0 && nd_mreq == NULL, which 371 * means a normal nfs rpc, so check the cache 372 */ 373 if ((nd->nd_flag & ND_NFSV2) && nd->nd_nam2 != NULL && 374 nfsrv_mallocmget_limit()) { 375 cacherep = RC_DROPIT; 376 } else { 377 /* 378 * For NFSv3, play it safe and assume that the client is 379 * doing retries on the same TCP connection. 380 */ 381 if ((nd->nd_flag & (ND_NFSV4 | ND_STREAMSOCK)) == 382 ND_STREAMSOCK) 383 nd->nd_flag |= ND_SAMETCPCONN; 384 nd->nd_retxid = xid; 385 nd->nd_tcpconntime = NFSD_MONOSEC; 386 nd->nd_sockref = xprt->xp_sockref; 387 if ((nd->nd_flag & ND_NFSV4) != 0) 388 nfsd_getminorvers(nd, tag, &tagstr, &taglen, 389 &minorvers); 390 if ((nd->nd_flag & ND_NFSV41) != 0) 391 /* NFSv4.1 caches replies in the session slots. */ 392 cacherep = RC_DOIT; 393 else { 394 cacherep = nfsrvd_getcache(nd); 395 ack = 0; 396 SVC_ACK(xprt, &ack); 397 nfsrc_trimcache(xprt->xp_sockref, ack, 0); 398 } 399 } 400 401 /* 402 * Handle the request. There are three cases. 403 * RC_DOIT - do the RPC 404 * RC_REPLY - return the reply already created 405 * RC_DROPIT - just throw the request away 406 */ 407 if (cacherep == RC_DOIT) { 408 if ((nd->nd_flag & ND_NFSV41) != 0) 409 nd->nd_xprt = xprt; 410 nfsrvd_dorpc(nd, isdgram, tagstr, taglen, minorvers); 411 if ((nd->nd_flag & ND_NFSV41) != 0) { 412 if (nd->nd_repstat != NFSERR_REPLYFROMCACHE && 413 (nd->nd_flag & ND_SAVEREPLY) != 0) { 414 /* Cache a copy of the reply. */ 415 m = m_copym(nd->nd_mreq, 0, M_COPYALL, 416 M_WAITOK); 417 } else 418 m = NULL; 419 if ((nd->nd_flag & ND_HASSEQUENCE) != 0) 420 nfsrv_cache_session(nd, &m); 421 if (nd->nd_repstat == NFSERR_REPLYFROMCACHE) { 422 nd->nd_repstat = 0; 423 if (m != NULL) { 424 m_freem(nd->nd_mreq); 425 nd->nd_mreq = m; 426 } 427 } 428 cacherep = RC_REPLY; 429 } else { 430 if (nd->nd_repstat == NFSERR_DONTREPLY) 431 cacherep = RC_DROPIT; 432 else 433 cacherep = RC_REPLY; 434 *rpp = nfsrvd_updatecache(nd); 435 } 436 } 437 if (tagstr != NULL && taglen > NFSV4_SMALLSTR) 438 free(tagstr, M_TEMP); 439 440 NFSEXITCODE2(0, nd); 441 return (cacherep); 442 } 443 444 static void 445 nfssvc_loss(SVCXPRT *xprt) 446 { 447 uint32_t ack; 448 449 ack = 0; 450 SVC_ACK(xprt, &ack); 451 NFSD_CURVNET_SET(NFSD_TD_TO_VNET(curthread)); 452 nfsrc_trimcache(xprt->xp_sockref, ack, 1); 453 NFSD_CURVNET_RESTORE(); 454 } 455 456 /* 457 * Adds a socket to the list for servicing by nfsds. 458 */ 459 int 460 nfsrvd_addsock(struct file *fp) 461 { 462 int siz; 463 struct socket *so; 464 int error = 0; 465 SVCXPRT *xprt; 466 static u_int64_t sockref = 0; 467 468 so = fp->f_data; 469 470 siz = sb_max_adj; 471 error = soreserve(so, siz, siz); 472 if (error) 473 goto out; 474 475 /* 476 * Steal the socket from userland so that it doesn't close 477 * unexpectedly. 478 */ 479 if (so->so_type == SOCK_DGRAM) 480 xprt = svc_dg_create(NFSD_VNET(nfsrvd_pool), so, 0, 0); 481 else 482 xprt = svc_vc_create(NFSD_VNET(nfsrvd_pool), so, 0, 0); 483 if (xprt) { 484 fp->f_ops = &badfileops; 485 fp->f_data = NULL; 486 xprt->xp_sockref = ++sockref; 487 if (NFSD_VNET(nfs_minvers) == NFS_VER2) 488 svc_reg(xprt, NFS_PROG, NFS_VER2, nfssvc_program, 489 NULL); 490 if (NFSD_VNET(nfs_minvers) <= NFS_VER3 && 491 NFSD_VNET(nfs_maxvers) >= NFS_VER3) 492 svc_reg(xprt, NFS_PROG, NFS_VER3, nfssvc_program, 493 NULL); 494 if (NFSD_VNET(nfs_maxvers) >= NFS_VER4) 495 svc_reg(xprt, NFS_PROG, NFS_VER4, nfssvc_program, 496 NULL); 497 if (so->so_type == SOCK_STREAM) 498 svc_loss_reg(xprt, nfssvc_loss); 499 SVC_RELEASE(xprt); 500 } else 501 error = EPERM; 502 503 out: 504 NFSEXITCODE(error); 505 return (error); 506 } 507 508 /* 509 * Called by nfssvc() for nfsds. Just loops around servicing rpc requests 510 * until it is killed by a signal. 511 */ 512 int 513 nfsrvd_nfsd(struct thread *td, struct nfsd_nfsd_args *args) 514 { 515 char principal[MAXHOSTNAMELEN + 5]; 516 struct proc *p; 517 int error = 0; 518 bool_t ret2, ret3, ret4; 519 520 error = copyinstr(args->principal, principal, sizeof (principal), 521 NULL); 522 if (error) 523 goto out; 524 525 /* 526 * Only the first nfsd actually does any work. The RPC code 527 * adds threads to it as needed. Any extra processes offered 528 * by nfsd just exit. If nfsd is new enough, it will call us 529 * once with a structure that specifies how many threads to 530 * use. 531 */ 532 NFSD_LOCK(); 533 if (NFSD_VNET(nfsrv_numnfsd) == 0) { 534 nfsdev_time = time_second; 535 p = td->td_proc; 536 PROC_LOCK(p); 537 p->p_flag2 |= P2_AST_SU; 538 PROC_UNLOCK(p); 539 newnfs_numnfsd++; /* Total num for all vnets. */ 540 NFSD_VNET(nfsrv_numnfsd)++; /* Num for this vnet. */ 541 542 NFSD_UNLOCK(); 543 error = nfsrv_createdevids(args, td); 544 if (error == 0) { 545 /* An empty string implies AUTH_SYS only. */ 546 if (principal[0] != '\0') { 547 ret2 = rpc_gss_set_svc_name_call(principal, 548 "kerberosv5", GSS_C_INDEFINITE, NFS_PROG, 549 NFS_VER2); 550 ret3 = rpc_gss_set_svc_name_call(principal, 551 "kerberosv5", GSS_C_INDEFINITE, NFS_PROG, 552 NFS_VER3); 553 ret4 = rpc_gss_set_svc_name_call(principal, 554 "kerberosv5", GSS_C_INDEFINITE, NFS_PROG, 555 NFS_VER4); 556 557 if (!ret2 || !ret3 || !ret4) 558 printf("nfsd: can't register svc " 559 "name %s jid:%d\n", principal, 560 td->td_ucred->cr_prison->pr_id); 561 } 562 563 NFSD_VNET(nfsrvd_pool)->sp_minthreads = 564 args->minthreads; 565 NFSD_VNET(nfsrvd_pool)->sp_maxthreads = 566 args->maxthreads; 567 568 /* 569 * If this is a pNFS service, make Getattr do a 570 * vn_start_write(), so it can do a vn_set_extattr(). 571 */ 572 if (nfsrv_devidcnt > 0) { 573 nfsrv_writerpc[NFSPROC_GETATTR] = 1; 574 nfsv4_opflag[NFSV4OP_GETATTR].modifyfs = 1; 575 } 576 577 svc_run(NFSD_VNET(nfsrvd_pool)); 578 579 /* Reset Getattr to not do a vn_start_write(). */ 580 nfsrv_writerpc[NFSPROC_GETATTR] = 0; 581 nfsv4_opflag[NFSV4OP_GETATTR].modifyfs = 0; 582 583 if (principal[0] != '\0') { 584 rpc_gss_clear_svc_name_call(NFS_PROG, NFS_VER2); 585 rpc_gss_clear_svc_name_call(NFS_PROG, NFS_VER3); 586 rpc_gss_clear_svc_name_call(NFS_PROG, NFS_VER4); 587 } 588 } 589 NFSD_LOCK(); 590 newnfs_numnfsd--; 591 NFSD_VNET(nfsrv_numnfsd)--; 592 nfsrvd_init(1); 593 PROC_LOCK(p); 594 p->p_flag2 &= ~P2_AST_SU; 595 PROC_UNLOCK(p); 596 } 597 NFSD_UNLOCK(); 598 599 out: 600 NFSEXITCODE(error); 601 return (error); 602 } 603 604 /* 605 * Initialize the data structures for the server. 606 * Handshake with any new nfsds starting up to avoid any chance of 607 * corruption. 608 */ 609 void 610 nfsrvd_init(int terminating) 611 { 612 613 NFSD_LOCK_ASSERT(); 614 615 if (terminating) { 616 NFSD_VNET(nfsd_master_proc) = NULL; 617 NFSD_UNLOCK(); 618 nfsrv_freealllayoutsanddevids(); 619 nfsrv_freeallbackchannel_xprts(); 620 svcpool_close(NFSD_VNET(nfsrvd_pool)); 621 free(nfsrv_zeropnfsdat, M_TEMP); 622 nfsrv_zeropnfsdat = NULL; 623 NFSD_LOCK(); 624 } else { 625 /* Initialize per-vnet globals once per vnet. */ 626 if (NFSD_VNET(nfsrvd_inited)) 627 return; 628 NFSD_VNET(nfsrvd_inited) = true; 629 NFSD_UNLOCK(); 630 NFSD_VNET(nfsrvd_pool) = svcpool_create("nfsd", 631 SYSCTL_STATIC_CHILDREN(_vfs_nfsd)); 632 NFSD_VNET(nfsrvd_pool)->sp_rcache = NULL; 633 NFSD_VNET(nfsrvd_pool)->sp_assign = fhanew_assign; 634 NFSD_VNET(nfsrvd_pool)->sp_done = fhanew_nd_complete; 635 NFSD_LOCK(); 636 } 637 } 638