1 /*-
2 * Copyright (c) 1989, 1991, 1993, 1995
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("$FreeBSD$");
36
37 /*
38 * Socket operations for use by nfs
39 */
40
41 #include "opt_kdtrace.h"
42 #include "opt_kgssapi.h"
43 #include "opt_nfs.h"
44
45 #include <sys/param.h>
46 #include <sys/systm.h>
47 #include <sys/kernel.h>
48 #include <sys/limits.h>
49 #include <sys/lock.h>
50 #include <sys/malloc.h>
51 #include <sys/mbuf.h>
52 #include <sys/mount.h>
53 #include <sys/mutex.h>
54 #include <sys/proc.h>
55 #include <sys/signalvar.h>
56 #include <sys/syscallsubr.h>
57 #include <sys/sysctl.h>
58 #include <sys/syslog.h>
59 #include <sys/vnode.h>
60
61 #include <rpc/rpc.h>
62 #include <rpc/krpc.h>
63
64 #include <kgssapi/krb5/kcrypto.h>
65
66 #include <fs/nfs/nfsport.h>
67
68 #ifdef KDTRACE_HOOKS
69 #include <sys/dtrace_bsd.h>
70
71 dtrace_nfsclient_nfs23_start_probe_func_t
72 dtrace_nfscl_nfs234_start_probe;
73
74 dtrace_nfsclient_nfs23_done_probe_func_t
75 dtrace_nfscl_nfs234_done_probe;
76
77 /*
78 * Registered probes by RPC type.
79 */
80 uint32_t nfscl_nfs2_start_probes[NFSV41_NPROCS + 1];
81 uint32_t nfscl_nfs2_done_probes[NFSV41_NPROCS + 1];
82
83 uint32_t nfscl_nfs3_start_probes[NFSV41_NPROCS + 1];
84 uint32_t nfscl_nfs3_done_probes[NFSV41_NPROCS + 1];
85
86 uint32_t nfscl_nfs4_start_probes[NFSV41_NPROCS + 1];
87 uint32_t nfscl_nfs4_done_probes[NFSV41_NPROCS + 1];
88 #endif
89
90 NFSSTATESPINLOCK;
91 NFSREQSPINLOCK;
92 NFSDLOCKMUTEX;
93 extern struct nfsstats newnfsstats;
94 extern struct nfsreqhead nfsd_reqq;
95 extern int nfscl_ticks;
96 extern void (*ncl_call_invalcaches)(struct vnode *);
97 extern int nfs_numnfscbd;
98 extern int nfscl_debuglevel;
99
100 SVCPOOL *nfscbd_pool;
101 static int nfsrv_gsscallbackson = 0;
102 static int nfs_bufpackets = 4;
103 static int nfs_reconnects;
104 static int nfs3_jukebox_delay = 10;
105 static int nfs_skip_wcc_data_onerr = 1;
106
107 SYSCTL_DECL(_vfs_nfs);
108
109 SYSCTL_INT(_vfs_nfs, OID_AUTO, bufpackets, CTLFLAG_RW, &nfs_bufpackets, 0,
110 "Buffer reservation size 2 < x < 64");
111 SYSCTL_INT(_vfs_nfs, OID_AUTO, reconnects, CTLFLAG_RD, &nfs_reconnects, 0,
112 "Number of times the nfs client has had to reconnect");
113 SYSCTL_INT(_vfs_nfs, OID_AUTO, nfs3_jukebox_delay, CTLFLAG_RW, &nfs3_jukebox_delay, 0,
114 "Number of seconds to delay a retry after receiving EJUKEBOX");
115 SYSCTL_INT(_vfs_nfs, OID_AUTO, skip_wcc_data_onerr, CTLFLAG_RW, &nfs_skip_wcc_data_onerr, 0,
116 "Disable weak cache consistency checking when server returns an error");
117
118 static void nfs_down(struct nfsmount *, struct thread *, const char *,
119 int, int);
120 static void nfs_up(struct nfsmount *, struct thread *, const char *,
121 int, int);
122 static int nfs_msg(struct thread *, const char *, const char *, int);
123
124 struct nfs_cached_auth {
125 int ca_refs; /* refcount, including 1 from the cache */
126 uid_t ca_uid; /* uid that corresponds to this auth */
127 AUTH *ca_auth; /* RPC auth handle */
128 };
129
130 static int nfsv2_procid[NFS_V3NPROCS] = {
131 NFSV2PROC_NULL,
132 NFSV2PROC_GETATTR,
133 NFSV2PROC_SETATTR,
134 NFSV2PROC_LOOKUP,
135 NFSV2PROC_NOOP,
136 NFSV2PROC_READLINK,
137 NFSV2PROC_READ,
138 NFSV2PROC_WRITE,
139 NFSV2PROC_CREATE,
140 NFSV2PROC_MKDIR,
141 NFSV2PROC_SYMLINK,
142 NFSV2PROC_CREATE,
143 NFSV2PROC_REMOVE,
144 NFSV2PROC_RMDIR,
145 NFSV2PROC_RENAME,
146 NFSV2PROC_LINK,
147 NFSV2PROC_READDIR,
148 NFSV2PROC_NOOP,
149 NFSV2PROC_STATFS,
150 NFSV2PROC_NOOP,
151 NFSV2PROC_NOOP,
152 NFSV2PROC_NOOP,
153 };
154
155 /*
156 * Initialize sockets and congestion for a new NFS connection.
157 * We do not free the sockaddr if error.
158 */
159 int
newnfs_connect(struct nfsmount * nmp,struct nfssockreq * nrp,struct ucred * cred,NFSPROC_T * p,int callback_retry_mult)160 newnfs_connect(struct nfsmount *nmp, struct nfssockreq *nrp,
161 struct ucred *cred, NFSPROC_T *p, int callback_retry_mult)
162 {
163 int rcvreserve, sndreserve;
164 int pktscale;
165 struct sockaddr *saddr;
166 struct ucred *origcred;
167 CLIENT *client;
168 struct netconfig *nconf;
169 struct socket *so;
170 int one = 1, retries, error = 0;
171 struct thread *td = curthread;
172 SVCXPRT *xprt;
173 struct timeval timo;
174
175 /*
176 * We need to establish the socket using the credentials of
177 * the mountpoint. Some parts of this process (such as
178 * sobind() and soconnect()) will use the curent thread's
179 * credential instead of the socket credential. To work
180 * around this, temporarily change the current thread's
181 * credential to that of the mountpoint.
182 *
183 * XXX: It would be better to explicitly pass the correct
184 * credential to sobind() and soconnect().
185 */
186 origcred = td->td_ucred;
187
188 /*
189 * Use the credential in nr_cred, if not NULL.
190 */
191 if (nrp->nr_cred != NULL)
192 td->td_ucred = nrp->nr_cred;
193 else
194 td->td_ucred = cred;
195 saddr = nrp->nr_nam;
196
197 if (saddr->sa_family == AF_INET)
198 if (nrp->nr_sotype == SOCK_DGRAM)
199 nconf = getnetconfigent("udp");
200 else
201 nconf = getnetconfigent("tcp");
202 else
203 if (nrp->nr_sotype == SOCK_DGRAM)
204 nconf = getnetconfigent("udp6");
205 else
206 nconf = getnetconfigent("tcp6");
207
208 pktscale = nfs_bufpackets;
209 if (pktscale < 2)
210 pktscale = 2;
211 if (pktscale > 64)
212 pktscale = 64;
213 /*
214 * soreserve() can fail if sb_max is too small, so shrink pktscale
215 * and try again if there is an error.
216 * Print a log message suggesting increasing sb_max.
217 * Creating a socket and doing this is necessary since, if the
218 * reservation sizes are too large and will make soreserve() fail,
219 * the connection will work until a large send is attempted and
220 * then it will loop in the krpc code.
221 */
222 so = NULL;
223 saddr = NFSSOCKADDR(nrp->nr_nam, struct sockaddr *);
224 error = socreate(saddr->sa_family, &so, nrp->nr_sotype,
225 nrp->nr_soproto, td->td_ucred, td);
226 if (error) {
227 td->td_ucred = origcred;
228 goto out;
229 }
230 do {
231 if (error != 0 && pktscale > 2)
232 pktscale--;
233 if (nrp->nr_sotype == SOCK_DGRAM) {
234 if (nmp != NULL) {
235 sndreserve = (NFS_MAXDGRAMDATA + NFS_MAXPKTHDR) *
236 pktscale;
237 rcvreserve = (NFS_MAXDGRAMDATA + NFS_MAXPKTHDR) *
238 pktscale;
239 } else {
240 sndreserve = rcvreserve = 1024 * pktscale;
241 }
242 } else {
243 if (nrp->nr_sotype != SOCK_STREAM)
244 panic("nfscon sotype");
245 if (nmp != NULL) {
246 sndreserve = (NFS_MAXBSIZE + NFS_MAXPKTHDR +
247 sizeof (u_int32_t)) * pktscale;
248 rcvreserve = (NFS_MAXBSIZE + NFS_MAXPKTHDR +
249 sizeof (u_int32_t)) * pktscale;
250 } else {
251 sndreserve = rcvreserve = 1024 * pktscale;
252 }
253 }
254 error = soreserve(so, sndreserve, rcvreserve);
255 } while (error != 0 && pktscale > 2);
256 soclose(so);
257 if (error) {
258 td->td_ucred = origcred;
259 goto out;
260 }
261
262 client = clnt_reconnect_create(nconf, saddr, nrp->nr_prog,
263 nrp->nr_vers, sndreserve, rcvreserve);
264 CLNT_CONTROL(client, CLSET_WAITCHAN, "newnfsreq");
265 if (nmp != NULL) {
266 if ((nmp->nm_flag & NFSMNT_INT))
267 CLNT_CONTROL(client, CLSET_INTERRUPTIBLE, &one);
268 if ((nmp->nm_flag & NFSMNT_RESVPORT))
269 CLNT_CONTROL(client, CLSET_PRIVPORT, &one);
270 if (NFSHASSOFT(nmp)) {
271 if (nmp->nm_sotype == SOCK_DGRAM)
272 /*
273 * For UDP, the large timeout for a reconnect
274 * will be set to "nm_retry * nm_timeo / 2", so
275 * we only want to do 2 reconnect timeout
276 * retries.
277 */
278 retries = 2;
279 else
280 retries = nmp->nm_retry;
281 } else
282 retries = INT_MAX;
283 if (NFSHASNFSV4N(nmp)) {
284 /*
285 * Make sure the nfscbd_pool doesn't get destroyed
286 * while doing this.
287 */
288 NFSD_LOCK();
289 if (nfs_numnfscbd > 0) {
290 nfs_numnfscbd++;
291 NFSD_UNLOCK();
292 xprt = svc_vc_create_backchannel(nfscbd_pool);
293 CLNT_CONTROL(client, CLSET_BACKCHANNEL, xprt);
294 NFSD_LOCK();
295 nfs_numnfscbd--;
296 if (nfs_numnfscbd == 0)
297 wakeup(&nfs_numnfscbd);
298 }
299 NFSD_UNLOCK();
300 }
301 } else {
302 /*
303 * Three cases:
304 * - Null RPC callback to client
305 * - Non-Null RPC callback to client, wait a little longer
306 * - upcalls to nfsuserd and gssd (clp == NULL)
307 */
308 if (callback_retry_mult == 0) {
309 retries = NFSV4_UPCALLRETRY;
310 CLNT_CONTROL(client, CLSET_PRIVPORT, &one);
311 } else {
312 retries = NFSV4_CALLBACKRETRY * callback_retry_mult;
313 }
314 }
315 CLNT_CONTROL(client, CLSET_RETRIES, &retries);
316
317 if (nmp != NULL) {
318 /*
319 * For UDP, there are 2 timeouts:
320 * - CLSET_RETRY_TIMEOUT sets the initial timeout for the timer
321 * that does a retransmit of an RPC request using the same
322 * socket and xid. This is what you normally want to do,
323 * since NFS servers depend on "same xid" for their
324 * Duplicate Request Cache.
325 * - timeout specified in CLNT_CALL_MBUF(), which specifies when
326 * retransmits on the same socket should fail and a fresh
327 * socket created. Each of these timeouts counts as one
328 * CLSET_RETRIES as set above.
329 * Set the initial retransmit timeout for UDP. This timeout
330 * doesn't exist for TCP and the following call just fails,
331 * which is ok.
332 */
333 timo.tv_sec = nmp->nm_timeo / NFS_HZ;
334 timo.tv_usec = (nmp->nm_timeo % NFS_HZ) * 1000000 / NFS_HZ;
335 CLNT_CONTROL(client, CLSET_RETRY_TIMEOUT, &timo);
336 }
337
338 mtx_lock(&nrp->nr_mtx);
339 if (nrp->nr_client != NULL) {
340 mtx_unlock(&nrp->nr_mtx);
341 /*
342 * Someone else already connected.
343 */
344 CLNT_RELEASE(client);
345 } else {
346 nrp->nr_client = client;
347 /*
348 * Protocols that do not require connections may be optionally
349 * left unconnected for servers that reply from a port other
350 * than NFS_PORT.
351 */
352 if (nmp == NULL || (nmp->nm_flag & NFSMNT_NOCONN) == 0) {
353 mtx_unlock(&nrp->nr_mtx);
354 CLNT_CONTROL(client, CLSET_CONNECT, &one);
355 } else
356 mtx_unlock(&nrp->nr_mtx);
357 }
358
359
360 /* Restore current thread's credentials. */
361 td->td_ucred = origcred;
362
363 out:
364 NFSEXITCODE(error);
365 return (error);
366 }
367
368 /*
369 * NFS disconnect. Clean up and unlink.
370 */
371 void
newnfs_disconnect(struct nfssockreq * nrp)372 newnfs_disconnect(struct nfssockreq *nrp)
373 {
374 CLIENT *client;
375
376 mtx_lock(&nrp->nr_mtx);
377 if (nrp->nr_client != NULL) {
378 client = nrp->nr_client;
379 nrp->nr_client = NULL;
380 mtx_unlock(&nrp->nr_mtx);
381 rpc_gss_secpurge_call(client);
382 CLNT_CLOSE(client);
383 CLNT_RELEASE(client);
384 } else {
385 mtx_unlock(&nrp->nr_mtx);
386 }
387 }
388
389 static AUTH *
nfs_getauth(struct nfssockreq * nrp,int secflavour,char * clnt_principal,char * srv_principal,gss_OID mech_oid,struct ucred * cred)390 nfs_getauth(struct nfssockreq *nrp, int secflavour, char *clnt_principal,
391 char *srv_principal, gss_OID mech_oid, struct ucred *cred)
392 {
393 rpc_gss_service_t svc;
394 AUTH *auth;
395
396 switch (secflavour) {
397 case RPCSEC_GSS_KRB5:
398 case RPCSEC_GSS_KRB5I:
399 case RPCSEC_GSS_KRB5P:
400 if (!mech_oid) {
401 if (!rpc_gss_mech_to_oid_call("kerberosv5", &mech_oid))
402 return (NULL);
403 }
404 if (secflavour == RPCSEC_GSS_KRB5)
405 svc = rpc_gss_svc_none;
406 else if (secflavour == RPCSEC_GSS_KRB5I)
407 svc = rpc_gss_svc_integrity;
408 else
409 svc = rpc_gss_svc_privacy;
410
411 if (clnt_principal == NULL)
412 auth = rpc_gss_secfind_call(nrp->nr_client, cred,
413 srv_principal, mech_oid, svc);
414 else {
415 auth = rpc_gss_seccreate_call(nrp->nr_client, cred,
416 clnt_principal, srv_principal, "kerberosv5",
417 svc, NULL, NULL, NULL);
418 return (auth);
419 }
420 if (auth != NULL)
421 return (auth);
422 /* fallthrough */
423 case AUTH_SYS:
424 default:
425 return (authunix_create(cred));
426
427 }
428 }
429
430 /*
431 * Callback from the RPC code to generate up/down notifications.
432 */
433
434 struct nfs_feedback_arg {
435 struct nfsmount *nf_mount;
436 int nf_lastmsg; /* last tprintf */
437 int nf_tprintfmsg;
438 struct thread *nf_td;
439 };
440
441 static void
nfs_feedback(int type,int proc,void * arg)442 nfs_feedback(int type, int proc, void *arg)
443 {
444 struct nfs_feedback_arg *nf = (struct nfs_feedback_arg *) arg;
445 struct nfsmount *nmp = nf->nf_mount;
446 time_t now;
447
448 switch (type) {
449 case FEEDBACK_REXMIT2:
450 case FEEDBACK_RECONNECT:
451 now = NFSD_MONOSEC;
452 if (nf->nf_lastmsg + nmp->nm_tprintf_delay < now) {
453 nfs_down(nmp, nf->nf_td,
454 "not responding", 0, NFSSTA_TIMEO);
455 nf->nf_tprintfmsg = TRUE;
456 nf->nf_lastmsg = now;
457 }
458 break;
459
460 case FEEDBACK_OK:
461 nfs_up(nf->nf_mount, nf->nf_td,
462 "is alive again", NFSSTA_TIMEO, nf->nf_tprintfmsg);
463 break;
464 }
465 }
466
467 /*
468 * newnfs_request - goes something like this
469 * - does the rpc by calling the krpc layer
470 * - break down rpc header and return with nfs reply
471 * nb: always frees up nd_mreq mbuf list
472 */
473 int
newnfs_request(struct nfsrv_descript * nd,struct nfsmount * nmp,struct nfsclient * clp,struct nfssockreq * nrp,vnode_t vp,struct thread * td,struct ucred * cred,u_int32_t prog,u_int32_t vers,u_char * retsum,int toplevel,u_int64_t * xidp,struct nfsclsession * sep)474 newnfs_request(struct nfsrv_descript *nd, struct nfsmount *nmp,
475 struct nfsclient *clp, struct nfssockreq *nrp, vnode_t vp,
476 struct thread *td, struct ucred *cred, u_int32_t prog, u_int32_t vers,
477 u_char *retsum, int toplevel, u_int64_t *xidp, struct nfsclsession *sep)
478 {
479 u_int32_t retseq, retval, *tl;
480 time_t waituntil;
481 int i = 0, j = 0, opcnt, set_sigset = 0, slot;
482 int trycnt, error = 0, usegssname = 0, secflavour = AUTH_SYS;
483 int freeslot, timeo;
484 u_int16_t procnum;
485 u_int trylater_delay = 1;
486 struct nfs_feedback_arg nf;
487 struct timeval timo;
488 AUTH *auth;
489 struct rpc_callextra ext;
490 enum clnt_stat stat;
491 struct nfsreq *rep = NULL;
492 char *srv_principal = NULL, *clnt_principal = NULL;
493 sigset_t oldset;
494 struct ucred *authcred;
495
496 if (xidp != NULL)
497 *xidp = 0;
498 /* Reject requests while attempting a forced unmount. */
499 if (nmp != NULL && (nmp->nm_mountp->mnt_kern_flag & MNTK_UNMOUNTF)) {
500 m_freem(nd->nd_mreq);
501 return (ESTALE);
502 }
503
504 /*
505 * Set authcred, which is used to acquire RPC credentials to
506 * the cred argument, by default. The crhold() should not be
507 * necessary, but will ensure that some future code change
508 * doesn't result in the credential being free'd prematurely.
509 */
510 authcred = crhold(cred);
511
512 /* For client side interruptible mounts, mask off the signals. */
513 if (nmp != NULL && td != NULL && NFSHASINT(nmp)) {
514 newnfs_set_sigmask(td, &oldset);
515 set_sigset = 1;
516 }
517
518 /*
519 * XXX if not already connected call nfs_connect now. Longer
520 * term, change nfs_mount to call nfs_connect unconditionally
521 * and let clnt_reconnect_create handle reconnects.
522 */
523 if (nrp->nr_client == NULL)
524 newnfs_connect(nmp, nrp, cred, td, 0);
525
526 /*
527 * For a client side mount, nmp is != NULL and clp == NULL. For
528 * server calls (callbacks or upcalls), nmp == NULL.
529 */
530 if (clp != NULL) {
531 NFSLOCKSTATE();
532 if ((clp->lc_flags & LCL_GSS) && nfsrv_gsscallbackson) {
533 secflavour = RPCSEC_GSS_KRB5;
534 if (nd->nd_procnum != NFSPROC_NULL) {
535 if (clp->lc_flags & LCL_GSSINTEGRITY)
536 secflavour = RPCSEC_GSS_KRB5I;
537 else if (clp->lc_flags & LCL_GSSPRIVACY)
538 secflavour = RPCSEC_GSS_KRB5P;
539 }
540 }
541 NFSUNLOCKSTATE();
542 } else if (nmp != NULL && NFSHASKERB(nmp) &&
543 nd->nd_procnum != NFSPROC_NULL) {
544 if (NFSHASALLGSSNAME(nmp) && nmp->nm_krbnamelen > 0)
545 nd->nd_flag |= ND_USEGSSNAME;
546 if ((nd->nd_flag & ND_USEGSSNAME) != 0) {
547 /*
548 * If there is a client side host based credential,
549 * use that, otherwise use the system uid, if set.
550 * The system uid is in the nmp->nm_sockreq.nr_cred
551 * credentials.
552 */
553 if (nmp->nm_krbnamelen > 0) {
554 usegssname = 1;
555 clnt_principal = nmp->nm_krbname;
556 } else if (nmp->nm_uid != (uid_t)-1) {
557 KASSERT(nmp->nm_sockreq.nr_cred != NULL,
558 ("newnfs_request: NULL nr_cred"));
559 crfree(authcred);
560 authcred = crhold(nmp->nm_sockreq.nr_cred);
561 }
562 } else if (nmp->nm_krbnamelen == 0 &&
563 nmp->nm_uid != (uid_t)-1 && cred->cr_uid == (uid_t)0) {
564 /*
565 * If there is no host based principal name and
566 * the system uid is set and this is root, use the
567 * system uid, since root won't have user
568 * credentials in a credentials cache file.
569 * The system uid is in the nmp->nm_sockreq.nr_cred
570 * credentials.
571 */
572 KASSERT(nmp->nm_sockreq.nr_cred != NULL,
573 ("newnfs_request: NULL nr_cred"));
574 crfree(authcred);
575 authcred = crhold(nmp->nm_sockreq.nr_cred);
576 }
577 if (NFSHASINTEGRITY(nmp))
578 secflavour = RPCSEC_GSS_KRB5I;
579 else if (NFSHASPRIVACY(nmp))
580 secflavour = RPCSEC_GSS_KRB5P;
581 else
582 secflavour = RPCSEC_GSS_KRB5;
583 srv_principal = NFSMNT_SRVKRBNAME(nmp);
584 } else if (nmp != NULL && !NFSHASKERB(nmp) &&
585 nd->nd_procnum != NFSPROC_NULL &&
586 (nd->nd_flag & ND_USEGSSNAME) != 0) {
587 /*
588 * Use the uid that did the mount when the RPC is doing
589 * NFSv4 system operations, as indicated by the
590 * ND_USEGSSNAME flag, for the AUTH_SYS case.
591 * The credentials in nm_sockreq.nr_cred were used for the
592 * mount.
593 */
594 KASSERT(nmp->nm_sockreq.nr_cred != NULL,
595 ("newnfs_request: NULL nr_cred"));
596 crfree(authcred);
597 authcred = crhold(nmp->nm_sockreq.nr_cred);
598 }
599
600 if (nmp != NULL) {
601 bzero(&nf, sizeof(struct nfs_feedback_arg));
602 nf.nf_mount = nmp;
603 nf.nf_td = td;
604 nf.nf_lastmsg = NFSD_MONOSEC -
605 ((nmp->nm_tprintf_delay)-(nmp->nm_tprintf_initial_delay));
606 }
607
608 if (nd->nd_procnum == NFSPROC_NULL)
609 auth = authnone_create();
610 else if (usegssname) {
611 /*
612 * For this case, the authenticator is held in the
613 * nfssockreq structure, so don't release the reference count
614 * held on it. --> Don't AUTH_DESTROY() it in this function.
615 */
616 if (nrp->nr_auth == NULL)
617 nrp->nr_auth = nfs_getauth(nrp, secflavour,
618 clnt_principal, srv_principal, NULL, authcred);
619 else
620 rpc_gss_refresh_auth_call(nrp->nr_auth);
621 auth = nrp->nr_auth;
622 } else
623 auth = nfs_getauth(nrp, secflavour, NULL,
624 srv_principal, NULL, authcred);
625 crfree(authcred);
626 if (auth == NULL) {
627 m_freem(nd->nd_mreq);
628 if (set_sigset)
629 newnfs_restore_sigmask(td, &oldset);
630 return (EACCES);
631 }
632 bzero(&ext, sizeof(ext));
633 ext.rc_auth = auth;
634 if (nmp != NULL) {
635 ext.rc_feedback = nfs_feedback;
636 ext.rc_feedback_arg = &nf;
637 }
638
639 procnum = nd->nd_procnum;
640 if ((nd->nd_flag & ND_NFSV4) &&
641 nd->nd_procnum != NFSPROC_NULL &&
642 nd->nd_procnum != NFSV4PROC_CBCOMPOUND)
643 procnum = NFSV4PROC_COMPOUND;
644
645 if (nmp != NULL) {
646 NFSINCRGLOBAL(newnfsstats.rpcrequests);
647
648 /* Map the procnum to the old NFSv2 one, as required. */
649 if ((nd->nd_flag & ND_NFSV2) != 0) {
650 if (nd->nd_procnum < NFS_V3NPROCS)
651 procnum = nfsv2_procid[nd->nd_procnum];
652 else
653 procnum = NFSV2PROC_NOOP;
654 }
655
656 /*
657 * Now only used for the R_DONTRECOVER case, but until that is
658 * supported within the krpc code, I need to keep a queue of
659 * outstanding RPCs for nfsv4 client requests.
660 */
661 if ((nd->nd_flag & ND_NFSV4) && procnum == NFSV4PROC_COMPOUND)
662 MALLOC(rep, struct nfsreq *, sizeof(struct nfsreq),
663 M_NFSDREQ, M_WAITOK);
664 #ifdef KDTRACE_HOOKS
665 if (dtrace_nfscl_nfs234_start_probe != NULL) {
666 uint32_t probe_id;
667 int probe_procnum;
668
669 if (nd->nd_flag & ND_NFSV4) {
670 probe_id =
671 nfscl_nfs4_start_probes[nd->nd_procnum];
672 probe_procnum = nd->nd_procnum;
673 } else if (nd->nd_flag & ND_NFSV3) {
674 probe_id = nfscl_nfs3_start_probes[procnum];
675 probe_procnum = procnum;
676 } else {
677 probe_id =
678 nfscl_nfs2_start_probes[nd->nd_procnum];
679 probe_procnum = procnum;
680 }
681 if (probe_id != 0)
682 (dtrace_nfscl_nfs234_start_probe)
683 (probe_id, vp, nd->nd_mreq, cred,
684 probe_procnum);
685 }
686 #endif
687 }
688 trycnt = 0;
689 freeslot = -1; /* Set to slot that needs to be free'd */
690 tryagain:
691 slot = -1; /* Slot that needs a sequence# increment. */
692 /*
693 * This timeout specifies when a new socket should be created,
694 * along with new xid values. For UDP, this should be done
695 * infrequently, since retransmits of RPC requests should normally
696 * use the same xid.
697 */
698 if (nmp == NULL) {
699 timo.tv_usec = 0;
700 if (clp == NULL)
701 timo.tv_sec = NFSV4_UPCALLTIMEO;
702 else
703 timo.tv_sec = NFSV4_CALLBACKTIMEO;
704 } else {
705 if (nrp->nr_sotype != SOCK_DGRAM) {
706 timo.tv_usec = 0;
707 if ((nmp->nm_flag & NFSMNT_NFSV4))
708 timo.tv_sec = INT_MAX;
709 else
710 timo.tv_sec = NFS_TCPTIMEO;
711 } else {
712 if (NFSHASSOFT(nmp)) {
713 /*
714 * CLSET_RETRIES is set to 2, so this should be
715 * half of the total timeout required.
716 */
717 timeo = nmp->nm_retry * nmp->nm_timeo / 2;
718 if (timeo < 1)
719 timeo = 1;
720 timo.tv_sec = timeo / NFS_HZ;
721 timo.tv_usec = (timeo % NFS_HZ) * 1000000 /
722 NFS_HZ;
723 } else {
724 /* For UDP hard mounts, use a large value. */
725 timo.tv_sec = NFS_MAXTIMEO / NFS_HZ;
726 timo.tv_usec = 0;
727 }
728 }
729
730 if (rep != NULL) {
731 rep->r_flags = 0;
732 rep->r_nmp = nmp;
733 /*
734 * Chain request into list of outstanding requests.
735 */
736 NFSLOCKREQ();
737 TAILQ_INSERT_TAIL(&nfsd_reqq, rep, r_chain);
738 NFSUNLOCKREQ();
739 }
740 }
741
742 nd->nd_mrep = NULL;
743 if (clp != NULL && sep != NULL)
744 stat = clnt_bck_call(nrp->nr_client, &ext, procnum,
745 nd->nd_mreq, &nd->nd_mrep, timo, sep->nfsess_xprt);
746 else
747 stat = CLNT_CALL_MBUF(nrp->nr_client, &ext, procnum,
748 nd->nd_mreq, &nd->nd_mrep, timo);
749
750 if (rep != NULL) {
751 /*
752 * RPC done, unlink the request.
753 */
754 NFSLOCKREQ();
755 TAILQ_REMOVE(&nfsd_reqq, rep, r_chain);
756 NFSUNLOCKREQ();
757 }
758
759 /*
760 * If there was a successful reply and a tprintf msg.
761 * tprintf a response.
762 */
763 if (stat == RPC_SUCCESS) {
764 error = 0;
765 } else if (stat == RPC_TIMEDOUT) {
766 NFSINCRGLOBAL(newnfsstats.rpctimeouts);
767 error = ETIMEDOUT;
768 } else if (stat == RPC_VERSMISMATCH) {
769 NFSINCRGLOBAL(newnfsstats.rpcinvalid);
770 error = EOPNOTSUPP;
771 } else if (stat == RPC_PROGVERSMISMATCH) {
772 NFSINCRGLOBAL(newnfsstats.rpcinvalid);
773 error = EPROTONOSUPPORT;
774 } else if (stat == RPC_INTR) {
775 error = EINTR;
776 } else {
777 NFSINCRGLOBAL(newnfsstats.rpcinvalid);
778 error = EACCES;
779 }
780 if (error) {
781 m_freem(nd->nd_mreq);
782 if (usegssname == 0)
783 AUTH_DESTROY(auth);
784 if (rep != NULL)
785 FREE((caddr_t)rep, M_NFSDREQ);
786 if (set_sigset)
787 newnfs_restore_sigmask(td, &oldset);
788 return (error);
789 }
790
791 KASSERT(nd->nd_mrep != NULL, ("mrep shouldn't be NULL if no error\n"));
792
793 /*
794 * Search for any mbufs that are not a multiple of 4 bytes long
795 * or with m_data not longword aligned.
796 * These could cause pointer alignment problems, so copy them to
797 * well aligned mbufs.
798 */
799 newnfs_realign(&nd->nd_mrep, M_WAITOK);
800 nd->nd_md = nd->nd_mrep;
801 nd->nd_dpos = NFSMTOD(nd->nd_md, caddr_t);
802 nd->nd_repstat = 0;
803 if (nd->nd_procnum != NFSPROC_NULL &&
804 nd->nd_procnum != NFSV4PROC_CBNULL) {
805 /* If sep == NULL, set it to the default in nmp. */
806 if (sep == NULL && nmp != NULL)
807 sep = NFSMNT_MDSSESSION(nmp);
808 /*
809 * and now the actual NFS xdr.
810 */
811 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
812 nd->nd_repstat = fxdr_unsigned(u_int32_t, *tl);
813 if (nd->nd_repstat >= 10000)
814 NFSCL_DEBUG(1, "proc=%d reps=%d\n", (int)nd->nd_procnum,
815 (int)nd->nd_repstat);
816
817 /*
818 * Get rid of the tag, return count and SEQUENCE result for
819 * NFSv4.
820 */
821 if ((nd->nd_flag & ND_NFSV4) != 0) {
822 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
823 i = fxdr_unsigned(int, *tl);
824 error = nfsm_advance(nd, NFSM_RNDUP(i), -1);
825 if (error)
826 goto nfsmout;
827 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
828 opcnt = fxdr_unsigned(int, *tl++);
829 i = fxdr_unsigned(int, *tl++);
830 j = fxdr_unsigned(int, *tl);
831 if (j >= 10000)
832 NFSCL_DEBUG(1, "fop=%d fst=%d\n", i, j);
833 /*
834 * If the first op is Sequence, free up the slot.
835 */
836 if ((nmp != NULL && i == NFSV4OP_SEQUENCE && j != 0) ||
837 (clp != NULL && i == NFSV4OP_CBSEQUENCE && j != 0))
838 NFSCL_DEBUG(1, "failed seq=%d\n", j);
839 if ((nmp != NULL && i == NFSV4OP_SEQUENCE && j == 0) ||
840 (clp != NULL && i == NFSV4OP_CBSEQUENCE && j == 0)
841 ) {
842 if (i == NFSV4OP_SEQUENCE)
843 NFSM_DISSECT(tl, uint32_t *,
844 NFSX_V4SESSIONID +
845 5 * NFSX_UNSIGNED);
846 else
847 NFSM_DISSECT(tl, uint32_t *,
848 NFSX_V4SESSIONID +
849 4 * NFSX_UNSIGNED);
850 mtx_lock(&sep->nfsess_mtx);
851 tl += NFSX_V4SESSIONID / NFSX_UNSIGNED;
852 retseq = fxdr_unsigned(uint32_t, *tl++);
853 slot = fxdr_unsigned(int, *tl++);
854 freeslot = slot;
855 if (retseq != sep->nfsess_slotseq[slot])
856 printf("retseq diff 0x%x\n", retseq);
857 retval = fxdr_unsigned(uint32_t, *++tl);
858 if ((retval + 1) < sep->nfsess_foreslots)
859 sep->nfsess_foreslots = (retval + 1);
860 else if ((retval + 1) > sep->nfsess_foreslots)
861 sep->nfsess_foreslots = (retval < 64) ?
862 (retval + 1) : 64;
863 mtx_unlock(&sep->nfsess_mtx);
864
865 /* Grab the op and status for the next one. */
866 if (opcnt > 1) {
867 NFSM_DISSECT(tl, uint32_t *,
868 2 * NFSX_UNSIGNED);
869 i = fxdr_unsigned(int, *tl++);
870 j = fxdr_unsigned(int, *tl);
871 }
872 }
873 }
874 if (nd->nd_repstat != 0) {
875 if (((nd->nd_repstat == NFSERR_DELAY ||
876 nd->nd_repstat == NFSERR_GRACE) &&
877 (nd->nd_flag & ND_NFSV4) &&
878 nd->nd_procnum != NFSPROC_DELEGRETURN &&
879 nd->nd_procnum != NFSPROC_SETATTR &&
880 nd->nd_procnum != NFSPROC_READ &&
881 nd->nd_procnum != NFSPROC_READDS &&
882 nd->nd_procnum != NFSPROC_WRITE &&
883 nd->nd_procnum != NFSPROC_WRITEDS &&
884 nd->nd_procnum != NFSPROC_OPEN &&
885 nd->nd_procnum != NFSPROC_CREATE &&
886 nd->nd_procnum != NFSPROC_OPENCONFIRM &&
887 nd->nd_procnum != NFSPROC_OPENDOWNGRADE &&
888 nd->nd_procnum != NFSPROC_CLOSE &&
889 nd->nd_procnum != NFSPROC_LOCK &&
890 nd->nd_procnum != NFSPROC_LOCKU) ||
891 (nd->nd_repstat == NFSERR_DELAY &&
892 (nd->nd_flag & ND_NFSV4) == 0) ||
893 nd->nd_repstat == NFSERR_RESOURCE) {
894 if (trylater_delay > NFS_TRYLATERDEL)
895 trylater_delay = NFS_TRYLATERDEL;
896 waituntil = NFSD_MONOSEC + trylater_delay;
897 while (NFSD_MONOSEC < waituntil)
898 (void) nfs_catnap(PZERO, 0, "nfstry");
899 trylater_delay *= 2;
900 if (slot != -1) {
901 mtx_lock(&sep->nfsess_mtx);
902 sep->nfsess_slotseq[slot]++;
903 *nd->nd_slotseq = txdr_unsigned(
904 sep->nfsess_slotseq[slot]);
905 mtx_unlock(&sep->nfsess_mtx);
906 }
907 m_freem(nd->nd_mrep);
908 nd->nd_mrep = NULL;
909 goto tryagain;
910 }
911
912 /*
913 * If the File Handle was stale, invalidate the
914 * lookup cache, just in case.
915 * (vp != NULL implies a client side call)
916 */
917 if (nd->nd_repstat == ESTALE && vp != NULL) {
918 cache_purge(vp);
919 if (ncl_call_invalcaches != NULL)
920 (*ncl_call_invalcaches)(vp);
921 }
922 }
923 if ((nd->nd_flag & ND_NFSV4) != 0) {
924 /* Free the slot, as required. */
925 if (freeslot != -1)
926 nfsv4_freeslot(sep, freeslot);
927 /*
928 * If this op is Putfh, throw its results away.
929 */
930 if (j >= 10000)
931 NFSCL_DEBUG(1, "nop=%d nst=%d\n", i, j);
932 if (nmp != NULL && i == NFSV4OP_PUTFH && j == 0) {
933 NFSM_DISSECT(tl,u_int32_t *,2 * NFSX_UNSIGNED);
934 i = fxdr_unsigned(int, *tl++);
935 j = fxdr_unsigned(int, *tl);
936 if (j >= 10000)
937 NFSCL_DEBUG(1, "n2op=%d n2st=%d\n", i,
938 j);
939 /*
940 * All Compounds that do an Op that must
941 * be in sequence consist of NFSV4OP_PUTFH
942 * followed by one of these. As such, we
943 * can determine if the seqid# should be
944 * incremented, here.
945 */
946 if ((i == NFSV4OP_OPEN ||
947 i == NFSV4OP_OPENCONFIRM ||
948 i == NFSV4OP_OPENDOWNGRADE ||
949 i == NFSV4OP_CLOSE ||
950 i == NFSV4OP_LOCK ||
951 i == NFSV4OP_LOCKU) &&
952 (j == 0 ||
953 (j != NFSERR_STALECLIENTID &&
954 j != NFSERR_STALESTATEID &&
955 j != NFSERR_BADSTATEID &&
956 j != NFSERR_BADSEQID &&
957 j != NFSERR_BADXDR &&
958 j != NFSERR_RESOURCE &&
959 j != NFSERR_NOFILEHANDLE)))
960 nd->nd_flag |= ND_INCRSEQID;
961 }
962 /*
963 * If this op's status is non-zero, mark
964 * that there is no more data to process.
965 */
966 if (j)
967 nd->nd_flag |= ND_NOMOREDATA;
968
969 /*
970 * If R_DONTRECOVER is set, replace the stale error
971 * reply, so that recovery isn't initiated.
972 */
973 if ((nd->nd_repstat == NFSERR_STALECLIENTID ||
974 nd->nd_repstat == NFSERR_BADSESSION ||
975 nd->nd_repstat == NFSERR_STALESTATEID) &&
976 rep != NULL && (rep->r_flags & R_DONTRECOVER))
977 nd->nd_repstat = NFSERR_STALEDONTRECOVER;
978 }
979 }
980
981 #ifdef KDTRACE_HOOKS
982 if (nmp != NULL && dtrace_nfscl_nfs234_done_probe != NULL) {
983 uint32_t probe_id;
984 int probe_procnum;
985
986 if (nd->nd_flag & ND_NFSV4) {
987 probe_id = nfscl_nfs4_done_probes[nd->nd_procnum];
988 probe_procnum = nd->nd_procnum;
989 } else if (nd->nd_flag & ND_NFSV3) {
990 probe_id = nfscl_nfs3_done_probes[procnum];
991 probe_procnum = procnum;
992 } else {
993 probe_id = nfscl_nfs2_done_probes[nd->nd_procnum];
994 probe_procnum = procnum;
995 }
996 if (probe_id != 0)
997 (dtrace_nfscl_nfs234_done_probe)(probe_id, vp,
998 nd->nd_mreq, cred, probe_procnum, 0);
999 }
1000 #endif
1001
1002 m_freem(nd->nd_mreq);
1003 if (usegssname == 0)
1004 AUTH_DESTROY(auth);
1005 if (rep != NULL)
1006 FREE((caddr_t)rep, M_NFSDREQ);
1007 if (set_sigset)
1008 newnfs_restore_sigmask(td, &oldset);
1009 return (0);
1010 nfsmout:
1011 mbuf_freem(nd->nd_mrep);
1012 mbuf_freem(nd->nd_mreq);
1013 if (usegssname == 0)
1014 AUTH_DESTROY(auth);
1015 if (rep != NULL)
1016 FREE((caddr_t)rep, M_NFSDREQ);
1017 if (set_sigset)
1018 newnfs_restore_sigmask(td, &oldset);
1019 return (error);
1020 }
1021
1022 /*
1023 * Mark all of an nfs mount's outstanding requests with R_SOFTTERM and
1024 * wait for all requests to complete. This is used by forced unmounts
1025 * to terminate any outstanding RPCs.
1026 */
1027 int
newnfs_nmcancelreqs(struct nfsmount * nmp)1028 newnfs_nmcancelreqs(struct nfsmount *nmp)
1029 {
1030
1031 if (nmp->nm_sockreq.nr_client != NULL)
1032 CLNT_CLOSE(nmp->nm_sockreq.nr_client);
1033 return (0);
1034 }
1035
1036 /*
1037 * Any signal that can interrupt an NFS operation in an intr mount
1038 * should be added to this set. SIGSTOP and SIGKILL cannot be masked.
1039 */
1040 int newnfs_sig_set[] = {
1041 SIGINT,
1042 SIGTERM,
1043 SIGHUP,
1044 SIGKILL,
1045 SIGQUIT
1046 };
1047
1048 /*
1049 * Check to see if one of the signals in our subset is pending on
1050 * the process (in an intr mount).
1051 */
1052 static int
nfs_sig_pending(sigset_t set)1053 nfs_sig_pending(sigset_t set)
1054 {
1055 int i;
1056
1057 for (i = 0 ; i < sizeof(newnfs_sig_set)/sizeof(int) ; i++)
1058 if (SIGISMEMBER(set, newnfs_sig_set[i]))
1059 return (1);
1060 return (0);
1061 }
1062
1063 /*
1064 * The set/restore sigmask functions are used to (temporarily) overwrite
1065 * the thread td_sigmask during an RPC call (for example). These are also
1066 * used in other places in the NFS client that might tsleep().
1067 */
1068 void
newnfs_set_sigmask(struct thread * td,sigset_t * oldset)1069 newnfs_set_sigmask(struct thread *td, sigset_t *oldset)
1070 {
1071 sigset_t newset;
1072 int i;
1073 struct proc *p;
1074
1075 SIGFILLSET(newset);
1076 if (td == NULL)
1077 td = curthread; /* XXX */
1078 p = td->td_proc;
1079 /* Remove the NFS set of signals from newset */
1080 PROC_LOCK(p);
1081 mtx_lock(&p->p_sigacts->ps_mtx);
1082 for (i = 0 ; i < sizeof(newnfs_sig_set)/sizeof(int) ; i++) {
1083 /*
1084 * But make sure we leave the ones already masked
1085 * by the process, ie. remove the signal from the
1086 * temporary signalmask only if it wasn't already
1087 * in p_sigmask.
1088 */
1089 if (!SIGISMEMBER(td->td_sigmask, newnfs_sig_set[i]) &&
1090 !SIGISMEMBER(p->p_sigacts->ps_sigignore, newnfs_sig_set[i]))
1091 SIGDELSET(newset, newnfs_sig_set[i]);
1092 }
1093 mtx_unlock(&p->p_sigacts->ps_mtx);
1094 kern_sigprocmask(td, SIG_SETMASK, &newset, oldset,
1095 SIGPROCMASK_PROC_LOCKED);
1096 PROC_UNLOCK(p);
1097 }
1098
1099 void
newnfs_restore_sigmask(struct thread * td,sigset_t * set)1100 newnfs_restore_sigmask(struct thread *td, sigset_t *set)
1101 {
1102 if (td == NULL)
1103 td = curthread; /* XXX */
1104 kern_sigprocmask(td, SIG_SETMASK, set, NULL, 0);
1105 }
1106
1107 /*
1108 * NFS wrapper to msleep(), that shoves a new p_sigmask and restores the
1109 * old one after msleep() returns.
1110 */
1111 int
newnfs_msleep(struct thread * td,void * ident,struct mtx * mtx,int priority,char * wmesg,int timo)1112 newnfs_msleep(struct thread *td, void *ident, struct mtx *mtx, int priority, char *wmesg, int timo)
1113 {
1114 sigset_t oldset;
1115 int error;
1116 struct proc *p;
1117
1118 if ((priority & PCATCH) == 0)
1119 return msleep(ident, mtx, priority, wmesg, timo);
1120 if (td == NULL)
1121 td = curthread; /* XXX */
1122 newnfs_set_sigmask(td, &oldset);
1123 error = msleep(ident, mtx, priority, wmesg, timo);
1124 newnfs_restore_sigmask(td, &oldset);
1125 p = td->td_proc;
1126 return (error);
1127 }
1128
1129 /*
1130 * Test for a termination condition pending on the process.
1131 * This is used for NFSMNT_INT mounts.
1132 */
1133 int
newnfs_sigintr(struct nfsmount * nmp,struct thread * td)1134 newnfs_sigintr(struct nfsmount *nmp, struct thread *td)
1135 {
1136 struct proc *p;
1137 sigset_t tmpset;
1138
1139 /* Terminate all requests while attempting a forced unmount. */
1140 if (nmp->nm_mountp->mnt_kern_flag & MNTK_UNMOUNTF)
1141 return (EIO);
1142 if (!(nmp->nm_flag & NFSMNT_INT))
1143 return (0);
1144 if (td == NULL)
1145 return (0);
1146 p = td->td_proc;
1147 PROC_LOCK(p);
1148 tmpset = p->p_siglist;
1149 SIGSETOR(tmpset, td->td_siglist);
1150 SIGSETNAND(tmpset, td->td_sigmask);
1151 mtx_lock(&p->p_sigacts->ps_mtx);
1152 SIGSETNAND(tmpset, p->p_sigacts->ps_sigignore);
1153 mtx_unlock(&p->p_sigacts->ps_mtx);
1154 if ((SIGNOTEMPTY(p->p_siglist) || SIGNOTEMPTY(td->td_siglist))
1155 && nfs_sig_pending(tmpset)) {
1156 PROC_UNLOCK(p);
1157 return (EINTR);
1158 }
1159 PROC_UNLOCK(p);
1160 return (0);
1161 }
1162
1163 static int
nfs_msg(struct thread * td,const char * server,const char * msg,int error)1164 nfs_msg(struct thread *td, const char *server, const char *msg, int error)
1165 {
1166 struct proc *p;
1167
1168 p = td ? td->td_proc : NULL;
1169 if (error) {
1170 tprintf(p, LOG_INFO, "newnfs server %s: %s, error %d\n",
1171 server, msg, error);
1172 } else {
1173 tprintf(p, LOG_INFO, "newnfs server %s: %s\n", server, msg);
1174 }
1175 return (0);
1176 }
1177
1178 static void
nfs_down(struct nfsmount * nmp,struct thread * td,const char * msg,int error,int flags)1179 nfs_down(struct nfsmount *nmp, struct thread *td, const char *msg,
1180 int error, int flags)
1181 {
1182 if (nmp == NULL)
1183 return;
1184 mtx_lock(&nmp->nm_mtx);
1185 if ((flags & NFSSTA_TIMEO) && !(nmp->nm_state & NFSSTA_TIMEO)) {
1186 nmp->nm_state |= NFSSTA_TIMEO;
1187 mtx_unlock(&nmp->nm_mtx);
1188 vfs_event_signal(&nmp->nm_mountp->mnt_stat.f_fsid,
1189 VQ_NOTRESP, 0);
1190 } else
1191 mtx_unlock(&nmp->nm_mtx);
1192 mtx_lock(&nmp->nm_mtx);
1193 if ((flags & NFSSTA_LOCKTIMEO) && !(nmp->nm_state & NFSSTA_LOCKTIMEO)) {
1194 nmp->nm_state |= NFSSTA_LOCKTIMEO;
1195 mtx_unlock(&nmp->nm_mtx);
1196 vfs_event_signal(&nmp->nm_mountp->mnt_stat.f_fsid,
1197 VQ_NOTRESPLOCK, 0);
1198 } else
1199 mtx_unlock(&nmp->nm_mtx);
1200 nfs_msg(td, nmp->nm_mountp->mnt_stat.f_mntfromname, msg, error);
1201 }
1202
1203 static void
nfs_up(struct nfsmount * nmp,struct thread * td,const char * msg,int flags,int tprintfmsg)1204 nfs_up(struct nfsmount *nmp, struct thread *td, const char *msg,
1205 int flags, int tprintfmsg)
1206 {
1207 if (nmp == NULL)
1208 return;
1209 if (tprintfmsg) {
1210 nfs_msg(td, nmp->nm_mountp->mnt_stat.f_mntfromname, msg, 0);
1211 }
1212
1213 mtx_lock(&nmp->nm_mtx);
1214 if ((flags & NFSSTA_TIMEO) && (nmp->nm_state & NFSSTA_TIMEO)) {
1215 nmp->nm_state &= ~NFSSTA_TIMEO;
1216 mtx_unlock(&nmp->nm_mtx);
1217 vfs_event_signal(&nmp->nm_mountp->mnt_stat.f_fsid,
1218 VQ_NOTRESP, 1);
1219 } else
1220 mtx_unlock(&nmp->nm_mtx);
1221
1222 mtx_lock(&nmp->nm_mtx);
1223 if ((flags & NFSSTA_LOCKTIMEO) && (nmp->nm_state & NFSSTA_LOCKTIMEO)) {
1224 nmp->nm_state &= ~NFSSTA_LOCKTIMEO;
1225 mtx_unlock(&nmp->nm_mtx);
1226 vfs_event_signal(&nmp->nm_mountp->mnt_stat.f_fsid,
1227 VQ_NOTRESPLOCK, 1);
1228 } else
1229 mtx_unlock(&nmp->nm_mtx);
1230 }
1231
1232