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 #include "opt_inet6.h"
38 #include "opt_kgssapi.h"
39 #include "opt_kern_tls.h"
40
41 #include <fs/nfs/nfsport.h>
42
43 #include <rpc/rpc.h>
44 #include <rpc/rpcsec_gss.h>
45 #include <rpc/rpcsec_tls.h>
46
47 #include <fs/nfsserver/nfs_fha_new.h>
48
49 #include <security/mac/mac_framework.h>
50
51 NFSDLOCKMUTEX;
52 NFSV4ROOTLOCKMUTEX;
53 char *nfsrv_zeropnfsdat = NULL;
54
55 /*
56 * Mapping of old NFS Version 2 RPC numbers to generic numbers.
57 */
58 int newnfs_nfsv3_procid[NFS_V3NPROCS] = {
59 NFSPROC_NULL,
60 NFSPROC_GETATTR,
61 NFSPROC_SETATTR,
62 NFSPROC_NOOP,
63 NFSPROC_LOOKUP,
64 NFSPROC_READLINK,
65 NFSPROC_READ,
66 NFSPROC_NOOP,
67 NFSPROC_WRITE,
68 NFSPROC_CREATE,
69 NFSPROC_REMOVE,
70 NFSPROC_RENAME,
71 NFSPROC_LINK,
72 NFSPROC_SYMLINK,
73 NFSPROC_MKDIR,
74 NFSPROC_RMDIR,
75 NFSPROC_READDIR,
76 NFSPROC_FSSTAT,
77 NFSPROC_NOOP,
78 NFSPROC_NOOP,
79 NFSPROC_NOOP,
80 NFSPROC_NOOP,
81 };
82
83 SYSCTL_DECL(_vfs_nfsd);
84
85 NFSD_VNET_DEFINE_STATIC(int, nfs_privport) = 0;
86 SYSCTL_INT(_vfs_nfsd, OID_AUTO, nfs_privport, CTLFLAG_NFSD_VNET | CTLFLAG_RWTUN,
87 &NFSD_VNET_NAME(nfs_privport), 0,
88 "Only allow clients using a privileged port for NFSv2, 3 and 4");
89
90 NFSD_VNET_DEFINE_STATIC(int, nfs_minvers) = NFS_VER2;
91 SYSCTL_INT(_vfs_nfsd, OID_AUTO, server_min_nfsvers,
92 CTLFLAG_NFSD_VNET | CTLFLAG_RWTUN, &NFSD_VNET_NAME(nfs_minvers), 0,
93 "The lowest version of NFS handled by the server");
94
95 NFSD_VNET_DEFINE_STATIC(int, nfs_maxvers) = NFS_VER4;
96 SYSCTL_INT(_vfs_nfsd, OID_AUTO, server_max_nfsvers,
97 CTLFLAG_NFSD_VNET | CTLFLAG_RWTUN, &NFSD_VNET_NAME(nfs_maxvers), 0,
98 "The highest version of NFS handled by the server");
99
100 static int nfs_proc(struct nfsrv_descript *, u_int32_t, SVCXPRT *xprt,
101 struct nfsrvcache **);
102
103 extern u_long sb_max_adj;
104 extern int newnfs_numnfsd;
105 extern time_t nfsdev_time;
106 extern int nfsrv_writerpc[NFS_NPROCS];
107 extern volatile int nfsrv_devidcnt;
108 extern struct nfsv4_opflag nfsv4_opflag[NFSV42_NOPS];
109
110 NFSD_VNET_DECLARE(struct proc *, nfsd_master_proc);
111
112 NFSD_VNET_DEFINE(SVCPOOL *, nfsrvd_pool);
113 NFSD_VNET_DEFINE(int, nfsrv_numnfsd) = 0;
114 NFSD_VNET_DEFINE(struct nfsv4lock, nfsd_suspend_lock);
115
116 NFSD_VNET_DEFINE_STATIC(bool, nfsrvd_inited) = false;
117
118 /*
119 * NFS server system calls
120 */
121
122 static void
nfssvc_program(struct svc_req * rqst,SVCXPRT * xprt)123 nfssvc_program(struct svc_req *rqst, SVCXPRT *xprt)
124 {
125 struct nfsrv_descript nd;
126 struct nfsrvcache *rp = NULL;
127 int cacherep, credflavor;
128 #ifdef KERN_TLS
129 u_int maxlen;
130 #endif
131
132 NFSD_CURVNET_SET_QUIET(NFSD_TD_TO_VNET(curthread));
133 memset(&nd, 0, sizeof(nd));
134 if (rqst->rq_vers == NFS_VER2) {
135 if (rqst->rq_proc > NFSV2PROC_STATFS ||
136 newnfs_nfsv3_procid[rqst->rq_proc] == NFSPROC_NOOP) {
137 svcerr_noproc(rqst);
138 svc_freereq(rqst);
139 goto out;
140 }
141 nd.nd_procnum = newnfs_nfsv3_procid[rqst->rq_proc];
142 nd.nd_flag = ND_NFSV2;
143 } else if (rqst->rq_vers == NFS_VER3) {
144 if (rqst->rq_proc >= NFS_V3NPROCS) {
145 svcerr_noproc(rqst);
146 svc_freereq(rqst);
147 goto out;
148 }
149 nd.nd_procnum = rqst->rq_proc;
150 nd.nd_flag = ND_NFSV3;
151 } else {
152 if (rqst->rq_proc != NFSPROC_NULL &&
153 rqst->rq_proc != NFSV4PROC_COMPOUND) {
154 svcerr_noproc(rqst);
155 svc_freereq(rqst);
156 goto out;
157 }
158 nd.nd_procnum = rqst->rq_proc;
159 nd.nd_flag = ND_NFSV4;
160 }
161
162 /*
163 * Note: we want rq_addr, not svc_getrpccaller for nd_nam2 -
164 * NFS_SRVMAXDATA uses a NULL value for nd_nam2 to detect TCP
165 * mounts.
166 */
167 nd.nd_mrep = rqst->rq_args;
168 rqst->rq_args = NULL;
169 newnfs_realign(&nd.nd_mrep, M_WAITOK);
170 nd.nd_md = nd.nd_mrep;
171 nd.nd_dpos = mtod(nd.nd_md, caddr_t);
172 nd.nd_nam = svc_getrpccaller(rqst);
173 nd.nd_nam2 = rqst->rq_addr;
174 nd.nd_mreq = NULL;
175 nd.nd_cred = NULL;
176
177 if (NFSD_VNET(nfs_privport) != 0) {
178 /* Check if source port is privileged */
179 u_short port;
180 struct sockaddr *nam = nd.nd_nam;
181 struct sockaddr_in *sin;
182
183 sin = (struct sockaddr_in *)nam;
184 /*
185 * INET/INET6 - same code:
186 * sin_port and sin6_port are at same offset
187 */
188 port = ntohs(sin->sin_port);
189 if (port >= IPPORT_RESERVED &&
190 nd.nd_procnum != NFSPROC_NULL) {
191 #ifdef INET6
192 char buf[INET6_ADDRSTRLEN];
193 #else
194 char buf[INET_ADDRSTRLEN];
195 #endif
196 #ifdef INET6
197 #if defined(KLD_MODULE)
198 /* Do not use ip6_sprintf: the nfs module should work without INET6. */
199 #define ip6_sprintf(buf, a) \
200 (sprintf((buf), "%x:%x:%x:%x:%x:%x:%x:%x", \
201 (a)->s6_addr16[0], (a)->s6_addr16[1], \
202 (a)->s6_addr16[2], (a)->s6_addr16[3], \
203 (a)->s6_addr16[4], (a)->s6_addr16[5], \
204 (a)->s6_addr16[6], (a)->s6_addr16[7]), \
205 (buf))
206 #endif
207 #endif
208 printf("NFS request from unprivileged port (%s:%d)\n",
209 #ifdef INET6
210 sin->sin_family == AF_INET6 ?
211 ip6_sprintf(buf, &satosin6(sin)->sin6_addr) :
212 #if defined(KLD_MODULE)
213 #undef ip6_sprintf
214 #endif
215 #endif
216 inet_ntoa_r(sin->sin_addr, buf), port);
217 svcerr_weakauth(rqst);
218 svc_freereq(rqst);
219 m_freem(nd.nd_mrep);
220 goto out;
221 }
222 }
223
224 if (nd.nd_procnum != NFSPROC_NULL) {
225 if (!svc_getcred(rqst, &nd.nd_cred, &credflavor)) {
226 svcerr_weakauth(rqst);
227 svc_freereq(rqst);
228 m_freem(nd.nd_mrep);
229 goto out;
230 }
231
232 /* Set the flag based on credflavor */
233 if (credflavor == RPCSEC_GSS_KRB5) {
234 nd.nd_flag |= ND_GSS;
235 } else if (credflavor == RPCSEC_GSS_KRB5I) {
236 nd.nd_flag |= (ND_GSS | ND_GSSINTEGRITY);
237 } else if (credflavor == RPCSEC_GSS_KRB5P) {
238 nd.nd_flag |= (ND_GSS | ND_GSSPRIVACY);
239 } else if (credflavor != AUTH_SYS) {
240 svcerr_weakauth(rqst);
241 svc_freereq(rqst);
242 m_freem(nd.nd_mrep);
243 goto out;
244 }
245
246 if ((xprt->xp_tls & RPCTLS_FLAGS_HANDSHAKE) != 0) {
247 nd.nd_flag |= ND_TLS;
248 if ((xprt->xp_tls & RPCTLS_FLAGS_VERIFIED) != 0)
249 nd.nd_flag |= ND_TLSCERT;
250 if ((xprt->xp_tls & RPCTLS_FLAGS_CERTUSER) != 0)
251 nd.nd_flag |= ND_TLSCERTUSER;
252 }
253 nd.nd_maxextsiz = 16384;
254 #ifdef MAC
255 mac_cred_associate_nfsd(nd.nd_cred);
256 #endif
257 /*
258 * Get a refcnt (shared lock) on nfsd_suspend_lock.
259 * NFSSVC_SUSPENDNFSD will take an exclusive lock on
260 * nfsd_suspend_lock to suspend these threads.
261 * The call to nfsv4_lock() that precedes nfsv4_getref()
262 * ensures that the acquisition of the exclusive lock
263 * takes priority over acquisition of the shared lock by
264 * waiting for any exclusive lock request to complete.
265 * This must be done here, before the check of
266 * nfsv4root exports by nfsvno_v4rootexport().
267 */
268 NFSLOCKV4ROOTMUTEX();
269 nfsv4_lock(&NFSD_VNET(nfsd_suspend_lock), 0, NULL,
270 NFSV4ROOTLOCKMUTEXPTR, NULL);
271 nfsv4_getref(&NFSD_VNET(nfsd_suspend_lock), NULL,
272 NFSV4ROOTLOCKMUTEXPTR, NULL);
273 NFSUNLOCKV4ROOTMUTEX();
274
275 if ((nd.nd_flag & ND_NFSV4) != 0) {
276 nd.nd_repstat = nfsvno_v4rootexport(&nd);
277 if (nd.nd_repstat != 0) {
278 NFSLOCKV4ROOTMUTEX();
279 nfsv4_relref(&NFSD_VNET(nfsd_suspend_lock));
280 NFSUNLOCKV4ROOTMUTEX();
281 svcerr_weakauth(rqst);
282 svc_freereq(rqst);
283 m_freem(nd.nd_mrep);
284 goto out;
285 }
286 }
287
288 #ifdef KERN_TLS
289 if ((xprt->xp_tls & RPCTLS_FLAGS_HANDSHAKE) != 0 &&
290 rpctls_getinfo(&maxlen, false, false))
291 nd.nd_maxextsiz = maxlen;
292 #endif
293 cacherep = nfs_proc(&nd, rqst->rq_xid, xprt, &rp);
294 NFSLOCKV4ROOTMUTEX();
295 nfsv4_relref(&NFSD_VNET(nfsd_suspend_lock));
296 NFSUNLOCKV4ROOTMUTEX();
297 } else {
298 NFSMGET(nd.nd_mreq);
299 nd.nd_mreq->m_len = 0;
300 cacherep = RC_REPLY;
301 }
302 if (nd.nd_mrep != NULL)
303 m_freem(nd.nd_mrep);
304
305 if (nd.nd_cred != NULL)
306 crfree(nd.nd_cred);
307
308 if (cacherep == RC_DROPIT) {
309 if (nd.nd_mreq != NULL)
310 m_freem(nd.nd_mreq);
311 svc_freereq(rqst);
312 goto out;
313 }
314
315 if (nd.nd_mreq == NULL) {
316 svcerr_decode(rqst);
317 svc_freereq(rqst);
318 goto out;
319 }
320
321 if (nd.nd_repstat & NFSERR_AUTHERR) {
322 svcerr_auth(rqst, nd.nd_repstat & ~NFSERR_AUTHERR);
323 if (nd.nd_mreq != NULL)
324 m_freem(nd.nd_mreq);
325 } else if (!svc_sendreply_mbuf(rqst, nd.nd_mreq)) {
326 svcerr_systemerr(rqst);
327 }
328 if (rp != NULL) {
329 nfsrvd_sentcache(rp, (rqst->rq_reply_seq != 0 ||
330 SVC_ACK(xprt, NULL)), rqst->rq_reply_seq);
331 }
332 svc_freereq(rqst);
333
334 out:
335 NFSD_CURVNET_RESTORE();
336 td_softdep_cleanup(curthread);
337 NFSEXITCODE(0);
338 }
339
340 /*
341 * Check the cache and, optionally, do the RPC.
342 * Return the appropriate cache response.
343 */
344 static int
nfs_proc(struct nfsrv_descript * nd,u_int32_t xid,SVCXPRT * xprt,struct nfsrvcache ** rpp)345 nfs_proc(struct nfsrv_descript *nd, u_int32_t xid, SVCXPRT *xprt,
346 struct nfsrvcache **rpp)
347 {
348 int cacherep = RC_DOIT, isdgram, taglen = -1;
349 struct mbuf *m;
350 u_char tag[NFSV4_SMALLSTR + 1], *tagstr = NULL;
351 u_int32_t minorvers = 0;
352 uint32_t ack;
353
354 *rpp = NULL;
355 if (nd->nd_nam2 == NULL) {
356 nd->nd_flag |= ND_STREAMSOCK;
357 isdgram = 0;
358 } else {
359 isdgram = 1;
360 }
361
362 /*
363 * Two cases:
364 * 1 - For NFSv2 over UDP, if we are near our malloc/mget
365 * limit, just drop the request. There is no
366 * NFSERR_RESOURCE or NFSERR_DELAY for NFSv2 and the
367 * client will timeout/retry over UDP in a little while.
368 * 2 - nd_repstat == 0 && nd_mreq == NULL, which
369 * means a normal nfs rpc, so check the cache
370 */
371 if ((nd->nd_flag & ND_NFSV2) && nd->nd_nam2 != NULL &&
372 nfsrv_mallocmget_limit()) {
373 cacherep = RC_DROPIT;
374 } else {
375 /*
376 * For NFSv3, play it safe and assume that the client is
377 * doing retries on the same TCP connection.
378 */
379 if ((nd->nd_flag & (ND_NFSV4 | ND_STREAMSOCK)) ==
380 ND_STREAMSOCK)
381 nd->nd_flag |= ND_SAMETCPCONN;
382 nd->nd_retxid = xid;
383 nd->nd_tcpconntime = NFSD_MONOSEC;
384 nd->nd_sockref = xprt->xp_sockref;
385 if ((nd->nd_flag & ND_NFSV4) != 0)
386 nfsd_getminorvers(nd, tag, &tagstr, &taglen,
387 &minorvers);
388 if ((nd->nd_flag & ND_NFSV41) != 0)
389 /* NFSv4.1 caches replies in the session slots. */
390 cacherep = RC_DOIT;
391 else {
392 cacherep = nfsrvd_getcache(nd);
393 ack = 0;
394 SVC_ACK(xprt, &ack);
395 nfsrc_trimcache(xprt->xp_sockref, ack, 0);
396 }
397 }
398
399 /*
400 * Handle the request. There are three cases.
401 * RC_DOIT - do the RPC
402 * RC_REPLY - return the reply already created
403 * RC_DROPIT - just throw the request away
404 */
405 if (cacherep == RC_DOIT) {
406 if ((nd->nd_flag & ND_NFSV41) != 0)
407 nd->nd_xprt = xprt;
408 nfsrvd_dorpc(nd, isdgram, tagstr, taglen, minorvers);
409 if ((nd->nd_flag & ND_NFSV41) != 0) {
410 if (nd->nd_repstat != NFSERR_REPLYFROMCACHE &&
411 (nd->nd_flag & ND_SAVEREPLY) != 0) {
412 /* Cache a copy of the reply. */
413 m = m_copym(nd->nd_mreq, 0, M_COPYALL,
414 M_WAITOK);
415 } else
416 m = NULL;
417 if ((nd->nd_flag & ND_HASSEQUENCE) != 0)
418 nfsrv_cache_session(nd, &m);
419 if (nd->nd_repstat == NFSERR_REPLYFROMCACHE) {
420 nd->nd_repstat = 0;
421 if (m != NULL) {
422 m_freem(nd->nd_mreq);
423 nd->nd_mreq = m;
424 }
425 }
426 cacherep = RC_REPLY;
427 } else {
428 if (nd->nd_repstat == NFSERR_DONTREPLY)
429 cacherep = RC_DROPIT;
430 else
431 cacherep = RC_REPLY;
432 *rpp = nfsrvd_updatecache(nd);
433 }
434 }
435 if (tagstr != NULL && taglen > NFSV4_SMALLSTR)
436 free(tagstr, M_TEMP);
437
438 NFSEXITCODE2(0, nd);
439 return (cacherep);
440 }
441
442 static void
nfssvc_loss(SVCXPRT * xprt)443 nfssvc_loss(SVCXPRT *xprt)
444 {
445 uint32_t ack;
446
447 ack = 0;
448 SVC_ACK(xprt, &ack);
449 NFSD_CURVNET_SET(NFSD_TD_TO_VNET(curthread));
450 nfsrc_trimcache(xprt->xp_sockref, ack, 1);
451 NFSD_CURVNET_RESTORE();
452 }
453
454 /*
455 * Adds a socket to the list for servicing by nfsds.
456 */
457 int
nfsrvd_addsock(struct file * fp)458 nfsrvd_addsock(struct file *fp)
459 {
460 int siz;
461 struct socket *so;
462 int error = 0;
463 SVCXPRT *xprt;
464 static u_int64_t sockref = 0;
465
466 so = fp->f_data;
467
468 siz = sb_max_adj;
469 error = soreserve(so, siz, siz);
470 if (error)
471 goto out;
472
473 /*
474 * Steal the socket from userland so that it doesn't close
475 * unexpectedly.
476 */
477 if (so->so_type == SOCK_DGRAM)
478 xprt = svc_dg_create(NFSD_VNET(nfsrvd_pool), so, 0, 0);
479 else
480 xprt = svc_vc_create(NFSD_VNET(nfsrvd_pool), so, 0, 0);
481 if (xprt) {
482 fp->f_ops = &badfileops;
483 fp->f_data = NULL;
484 xprt->xp_sockref = ++sockref;
485 if (NFSD_VNET(nfs_minvers) == NFS_VER2)
486 svc_reg(xprt, NFS_PROG, NFS_VER2, nfssvc_program,
487 NULL);
488 if (NFSD_VNET(nfs_minvers) <= NFS_VER3 &&
489 NFSD_VNET(nfs_maxvers) >= NFS_VER3)
490 svc_reg(xprt, NFS_PROG, NFS_VER3, nfssvc_program,
491 NULL);
492 if (NFSD_VNET(nfs_maxvers) >= NFS_VER4)
493 svc_reg(xprt, NFS_PROG, NFS_VER4, nfssvc_program,
494 NULL);
495 if (so->so_type == SOCK_STREAM)
496 svc_loss_reg(xprt, nfssvc_loss);
497 SVC_RELEASE(xprt);
498 } else
499 error = EPERM;
500
501 out:
502 NFSEXITCODE(error);
503 return (error);
504 }
505
506 /*
507 * Called by nfssvc() for nfsds. Just loops around servicing rpc requests
508 * until it is killed by a signal.
509 */
510 int
nfsrvd_nfsd(struct thread * td,struct nfsd_nfsd_args * args)511 nfsrvd_nfsd(struct thread *td, struct nfsd_nfsd_args *args)
512 {
513 char principal[MAXHOSTNAMELEN + 5];
514 struct proc *p;
515 int error = 0;
516 bool_t ret2, ret3, ret4;
517
518 error = copyinstr(args->principal, principal, sizeof (principal),
519 NULL);
520 if (error)
521 goto out;
522
523 /*
524 * Only the first nfsd actually does any work. The RPC code
525 * adds threads to it as needed. Any extra processes offered
526 * by nfsd just exit. If nfsd is new enough, it will call us
527 * once with a structure that specifies how many threads to
528 * use.
529 */
530 NFSD_LOCK();
531 if (NFSD_VNET(nfsrv_numnfsd) == 0) {
532 nfsdev_time = time_second;
533 p = td->td_proc;
534 PROC_LOCK(p);
535 p->p_flag2 |= P2_AST_SU;
536 PROC_UNLOCK(p);
537 newnfs_numnfsd++; /* Total num for all vnets. */
538 NFSD_VNET(nfsrv_numnfsd)++; /* Num for this vnet. */
539
540 NFSD_UNLOCK();
541 error = nfsrv_createdevids(args, td);
542 if (error == 0) {
543 /* An empty string implies AUTH_SYS only. */
544 if (principal[0] != '\0') {
545 ret2 = rpc_gss_set_svc_name_call(principal,
546 "kerberosv5", GSS_C_INDEFINITE, NFS_PROG,
547 NFS_VER2);
548 ret3 = rpc_gss_set_svc_name_call(principal,
549 "kerberosv5", GSS_C_INDEFINITE, NFS_PROG,
550 NFS_VER3);
551 ret4 = rpc_gss_set_svc_name_call(principal,
552 "kerberosv5", GSS_C_INDEFINITE, NFS_PROG,
553 NFS_VER4);
554
555 if (!ret2 || !ret3 || !ret4)
556 printf("nfsd: can't register svc "
557 "name %s jid:%d\n", principal,
558 td->td_ucred->cr_prison->pr_id);
559 }
560
561 NFSD_VNET(nfsrvd_pool)->sp_minthreads =
562 args->minthreads;
563 NFSD_VNET(nfsrvd_pool)->sp_maxthreads =
564 args->maxthreads;
565
566 /*
567 * If this is a pNFS service, make Getattr do a
568 * vn_start_write(), so it can do a vn_set_extattr().
569 */
570 if (nfsrv_devidcnt > 0) {
571 nfsrv_writerpc[NFSPROC_GETATTR] = 1;
572 nfsv4_opflag[NFSV4OP_GETATTR].modifyfs = 1;
573 }
574
575 svc_run(NFSD_VNET(nfsrvd_pool));
576
577 /* Reset Getattr to not do a vn_start_write(). */
578 nfsrv_writerpc[NFSPROC_GETATTR] = 0;
579 nfsv4_opflag[NFSV4OP_GETATTR].modifyfs = 0;
580
581 if (principal[0] != '\0') {
582 rpc_gss_clear_svc_name_call(NFS_PROG, NFS_VER2);
583 rpc_gss_clear_svc_name_call(NFS_PROG, NFS_VER3);
584 rpc_gss_clear_svc_name_call(NFS_PROG, NFS_VER4);
585 }
586 }
587 NFSD_LOCK();
588 newnfs_numnfsd--;
589 NFSD_VNET(nfsrv_numnfsd)--;
590 nfsrvd_init(1);
591 PROC_LOCK(p);
592 p->p_flag2 &= ~P2_AST_SU;
593 PROC_UNLOCK(p);
594 }
595 NFSD_UNLOCK();
596
597 out:
598 NFSEXITCODE(error);
599 return (error);
600 }
601
602 /*
603 * Initialize the data structures for the server.
604 * Handshake with any new nfsds starting up to avoid any chance of
605 * corruption.
606 */
607 void
nfsrvd_init(int terminating)608 nfsrvd_init(int terminating)
609 {
610
611 NFSD_LOCK_ASSERT();
612
613 if (terminating) {
614 NFSD_VNET(nfsd_master_proc) = NULL;
615 NFSD_UNLOCK();
616 nfsrv_freealllayoutsanddevids();
617 nfsrv_freeallbackchannel_xprts();
618 svcpool_close(NFSD_VNET(nfsrvd_pool));
619 free(nfsrv_zeropnfsdat, M_TEMP);
620 nfsrv_zeropnfsdat = NULL;
621 NFSD_LOCK();
622 } else {
623 /* Initialize per-vnet globals once per vnet. */
624 if (NFSD_VNET(nfsrvd_inited))
625 return;
626 NFSD_VNET(nfsrvd_inited) = true;
627 NFSD_UNLOCK();
628 NFSD_VNET(nfsrvd_pool) = svcpool_create("nfsd",
629 SYSCTL_STATIC_CHILDREN(_vfs_nfsd));
630 NFSD_VNET(nfsrvd_pool)->sp_rcache = NULL;
631 NFSD_VNET(nfsrvd_pool)->sp_assign = fhanew_assign;
632 NFSD_VNET(nfsrvd_pool)->sp_done = fhanew_nd_complete;
633 NFSD_LOCK();
634 }
635 }
636