1 /* $NetBSD: nfs_commonkrpc.c,v 1.1.1.1 2013/09/30 07:19:36 dholland Exp $ */ 2 /*- 3 * Copyright (c) 1989, 1991, 1993, 1995 4 * The Regents of the University of California. All rights reserved. 5 * 6 * This code is derived from software contributed to Berkeley by 7 * Rick Macklem at The University of Guelph. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 */ 34 35 #include <sys/cdefs.h> 36 /* __FBSDID("FreeBSD: head/sys/fs/nfs/nfs_commonkrpc.c 253049 2013-07-09 01:05:28Z rmacklem "); */ 37 __RCSID("$NetBSD: nfs_commonkrpc.c,v 1.1.1.1 2013/09/30 07:19:36 dholland Exp $"); 38 39 /* 40 * Socket operations for use by nfs 41 */ 42 43 #include "opt_kdtrace.h" 44 #include "opt_kgssapi.h" 45 #include "opt_nfs.h" 46 47 #include <sys/param.h> 48 #include <sys/systm.h> 49 #include <sys/kernel.h> 50 #include <sys/limits.h> 51 #include <sys/lock.h> 52 #include <sys/malloc.h> 53 #include <sys/mbuf.h> 54 #include <sys/mount.h> 55 #include <sys/mutex.h> 56 #include <sys/proc.h> 57 #include <sys/signalvar.h> 58 #include <sys/syscallsubr.h> 59 #include <sys/sysctl.h> 60 #include <sys/syslog.h> 61 #include <sys/vnode.h> 62 63 #include <rpc/rpc.h> 64 65 #include <kgssapi/krb5/kcrypto.h> 66 67 #include <fs/nfs/nfsport.h> 68 69 #ifdef KDTRACE_HOOKS 70 #include <sys/dtrace_bsd.h> 71 72 dtrace_nfsclient_nfs23_start_probe_func_t 73 dtrace_nfscl_nfs234_start_probe; 74 75 dtrace_nfsclient_nfs23_done_probe_func_t 76 dtrace_nfscl_nfs234_done_probe; 77 78 /* 79 * Registered probes by RPC type. 80 */ 81 uint32_t nfscl_nfs2_start_probes[NFSV41_NPROCS + 1]; 82 uint32_t nfscl_nfs2_done_probes[NFSV41_NPROCS + 1]; 83 84 uint32_t nfscl_nfs3_start_probes[NFSV41_NPROCS + 1]; 85 uint32_t nfscl_nfs3_done_probes[NFSV41_NPROCS + 1]; 86 87 uint32_t nfscl_nfs4_start_probes[NFSV41_NPROCS + 1]; 88 uint32_t nfscl_nfs4_done_probes[NFSV41_NPROCS + 1]; 89 #endif 90 91 NFSSTATESPINLOCK; 92 NFSREQSPINLOCK; 93 NFSDLOCKMUTEX; 94 extern struct nfsstats newnfsstats; 95 extern struct nfsreqhead nfsd_reqq; 96 extern int nfscl_ticks; 97 extern void (*ncl_call_invalcaches)(struct vnode *); 98 extern int nfs_numnfscbd; 99 extern int nfscl_debuglevel; 100 101 SVCPOOL *nfscbd_pool; 102 static int nfsrv_gsscallbackson = 0; 103 static int nfs_bufpackets = 4; 104 static int nfs_reconnects; 105 static int nfs3_jukebox_delay = 10; 106 static int nfs_skip_wcc_data_onerr = 1; 107 108 SYSCTL_DECL(_vfs_nfs); 109 110 SYSCTL_INT(_vfs_nfs, OID_AUTO, bufpackets, CTLFLAG_RW, &nfs_bufpackets, 0, 111 "Buffer reservation size 2 < x < 64"); 112 SYSCTL_INT(_vfs_nfs, OID_AUTO, reconnects, CTLFLAG_RD, &nfs_reconnects, 0, 113 "Number of times the nfs client has had to reconnect"); 114 SYSCTL_INT(_vfs_nfs, OID_AUTO, nfs3_jukebox_delay, CTLFLAG_RW, &nfs3_jukebox_delay, 0, 115 "Number of seconds to delay a retry after receiving EJUKEBOX"); 116 SYSCTL_INT(_vfs_nfs, OID_AUTO, skip_wcc_data_onerr, CTLFLAG_RW, &nfs_skip_wcc_data_onerr, 0, 117 "Disable weak cache consistency checking when server returns an error"); 118 119 static void nfs_down(struct nfsmount *, struct thread *, const char *, 120 int, int); 121 static void nfs_up(struct nfsmount *, struct thread *, const char *, 122 int, int); 123 static int nfs_msg(struct thread *, const char *, const char *, int); 124 125 struct nfs_cached_auth { 126 int ca_refs; /* refcount, including 1 from the cache */ 127 uid_t ca_uid; /* uid that corresponds to this auth */ 128 AUTH *ca_auth; /* RPC auth handle */ 129 }; 130 131 static int nfsv2_procid[NFS_V3NPROCS] = { 132 NFSV2PROC_NULL, 133 NFSV2PROC_GETATTR, 134 NFSV2PROC_SETATTR, 135 NFSV2PROC_LOOKUP, 136 NFSV2PROC_NOOP, 137 NFSV2PROC_READLINK, 138 NFSV2PROC_READ, 139 NFSV2PROC_WRITE, 140 NFSV2PROC_CREATE, 141 NFSV2PROC_MKDIR, 142 NFSV2PROC_SYMLINK, 143 NFSV2PROC_CREATE, 144 NFSV2PROC_REMOVE, 145 NFSV2PROC_RMDIR, 146 NFSV2PROC_RENAME, 147 NFSV2PROC_LINK, 148 NFSV2PROC_READDIR, 149 NFSV2PROC_NOOP, 150 NFSV2PROC_STATFS, 151 NFSV2PROC_NOOP, 152 NFSV2PROC_NOOP, 153 NFSV2PROC_NOOP, 154 }; 155 156 /* 157 * Initialize sockets and congestion for a new NFS connection. 158 * We do not free the sockaddr if error. 159 */ 160 int 161 newnfs_connect(struct nfsmount *nmp, struct nfssockreq *nrp, 162 struct ucred *cred, NFSPROC_T *p, int callback_retry_mult) 163 { 164 int rcvreserve, sndreserve; 165 int pktscale; 166 struct sockaddr *saddr; 167 struct ucred *origcred; 168 CLIENT *client; 169 struct netconfig *nconf; 170 struct socket *so; 171 int one = 1, retries, error = 0; 172 struct thread *td = curthread; 173 SVCXPRT *xprt; 174 struct timeval timo; 175 176 /* 177 * We need to establish the socket using the credentials of 178 * the mountpoint. Some parts of this process (such as 179 * sobind() and soconnect()) will use the curent thread's 180 * credential instead of the socket credential. To work 181 * around this, temporarily change the current thread's 182 * credential to that of the mountpoint. 183 * 184 * XXX: It would be better to explicitly pass the correct 185 * credential to sobind() and soconnect(). 186 */ 187 origcred = td->td_ucred; 188 189 /* 190 * Use the credential in nr_cred, if not NULL. 191 */ 192 if (nrp->nr_cred != NULL) 193 td->td_ucred = nrp->nr_cred; 194 else 195 td->td_ucred = cred; 196 saddr = nrp->nr_nam; 197 198 if (saddr->sa_family == AF_INET) 199 if (nrp->nr_sotype == SOCK_DGRAM) 200 nconf = getnetconfigent("udp"); 201 else 202 nconf = getnetconfigent("tcp"); 203 else 204 if (nrp->nr_sotype == SOCK_DGRAM) 205 nconf = getnetconfigent("udp6"); 206 else 207 nconf = getnetconfigent("tcp6"); 208 209 pktscale = nfs_bufpackets; 210 if (pktscale < 2) 211 pktscale = 2; 212 if (pktscale > 64) 213 pktscale = 64; 214 /* 215 * soreserve() can fail if sb_max is too small, so shrink pktscale 216 * and try again if there is an error. 217 * Print a log message suggesting increasing sb_max. 218 * Creating a socket and doing this is necessary since, if the 219 * reservation sizes are too large and will make soreserve() fail, 220 * the connection will work until a large send is attempted and 221 * then it will loop in the krpc code. 222 */ 223 so = NULL; 224 saddr = NFSSOCKADDR(nrp->nr_nam, struct sockaddr *); 225 error = socreate(saddr->sa_family, &so, nrp->nr_sotype, 226 nrp->nr_soproto, td->td_ucred, td); 227 if (error) { 228 td->td_ucred = origcred; 229 goto out; 230 } 231 do { 232 if (error != 0 && pktscale > 2) 233 pktscale--; 234 if (nrp->nr_sotype == SOCK_DGRAM) { 235 if (nmp != NULL) { 236 sndreserve = (NFS_MAXDGRAMDATA + NFS_MAXPKTHDR) * 237 pktscale; 238 rcvreserve = (NFS_MAXDGRAMDATA + NFS_MAXPKTHDR) * 239 pktscale; 240 } else { 241 sndreserve = rcvreserve = 1024 * pktscale; 242 } 243 } else { 244 if (nrp->nr_sotype != SOCK_STREAM) 245 panic("nfscon sotype"); 246 if (nmp != NULL) { 247 sndreserve = (NFS_MAXBSIZE + NFS_MAXPKTHDR + 248 sizeof (u_int32_t)) * pktscale; 249 rcvreserve = (NFS_MAXBSIZE + NFS_MAXPKTHDR + 250 sizeof (u_int32_t)) * pktscale; 251 } else { 252 sndreserve = rcvreserve = 1024 * pktscale; 253 } 254 } 255 error = soreserve(so, sndreserve, rcvreserve); 256 } while (error != 0 && pktscale > 2); 257 soclose(so); 258 if (error) { 259 td->td_ucred = origcred; 260 goto out; 261 } 262 263 client = clnt_reconnect_create(nconf, saddr, nrp->nr_prog, 264 nrp->nr_vers, sndreserve, rcvreserve); 265 CLNT_CONTROL(client, CLSET_WAITCHAN, "newnfsreq"); 266 if (nmp != NULL) { 267 if ((nmp->nm_flag & NFSMNT_INT)) 268 CLNT_CONTROL(client, CLSET_INTERRUPTIBLE, &one); 269 if ((nmp->nm_flag & NFSMNT_RESVPORT)) 270 CLNT_CONTROL(client, CLSET_PRIVPORT, &one); 271 if (NFSHASSOFT(nmp)) { 272 if (nmp->nm_sotype == SOCK_DGRAM) 273 /* 274 * For UDP, the large timeout for a reconnect 275 * will be set to "nm_retry * nm_timeo / 2", so 276 * we only want to do 2 reconnect timeout 277 * retries. 278 */ 279 retries = 2; 280 else 281 retries = nmp->nm_retry; 282 } else 283 retries = INT_MAX; 284 if (NFSHASNFSV4N(nmp)) { 285 /* 286 * Make sure the nfscbd_pool doesn't get destroyed 287 * while doing this. 288 */ 289 NFSD_LOCK(); 290 if (nfs_numnfscbd > 0) { 291 nfs_numnfscbd++; 292 NFSD_UNLOCK(); 293 xprt = svc_vc_create_backchannel(nfscbd_pool); 294 CLNT_CONTROL(client, CLSET_BACKCHANNEL, xprt); 295 NFSD_LOCK(); 296 nfs_numnfscbd--; 297 if (nfs_numnfscbd == 0) 298 wakeup(&nfs_numnfscbd); 299 } 300 NFSD_UNLOCK(); 301 } 302 } else { 303 /* 304 * Three cases: 305 * - Null RPC callback to client 306 * - Non-Null RPC callback to client, wait a little longer 307 * - upcalls to nfsuserd and gssd (clp == NULL) 308 */ 309 if (callback_retry_mult == 0) { 310 retries = NFSV4_UPCALLRETRY; 311 CLNT_CONTROL(client, CLSET_PRIVPORT, &one); 312 } else { 313 retries = NFSV4_CALLBACKRETRY * callback_retry_mult; 314 } 315 } 316 CLNT_CONTROL(client, CLSET_RETRIES, &retries); 317 318 if (nmp != NULL) { 319 /* 320 * For UDP, there are 2 timeouts: 321 * - CLSET_RETRY_TIMEOUT sets the initial timeout for the timer 322 * that does a retransmit of an RPC request using the same 323 * socket and xid. This is what you normally want to do, 324 * since NFS servers depend on "same xid" for their 325 * Duplicate Request Cache. 326 * - timeout specified in CLNT_CALL_MBUF(), which specifies when 327 * retransmits on the same socket should fail and a fresh 328 * socket created. Each of these timeouts counts as one 329 * CLSET_RETRIES as set above. 330 * Set the initial retransmit timeout for UDP. This timeout 331 * doesn't exist for TCP and the following call just fails, 332 * which is ok. 333 */ 334 timo.tv_sec = nmp->nm_timeo / NFS_HZ; 335 timo.tv_usec = (nmp->nm_timeo % NFS_HZ) * 1000000 / NFS_HZ; 336 CLNT_CONTROL(client, CLSET_RETRY_TIMEOUT, &timo); 337 } 338 339 mtx_lock(&nrp->nr_mtx); 340 if (nrp->nr_client != NULL) { 341 /* 342 * Someone else already connected. 343 */ 344 CLNT_RELEASE(client); 345 } else { 346 nrp->nr_client = client; 347 } 348 349 /* 350 * Protocols that do not require connections may be optionally left 351 * unconnected for servers that reply from a port other than NFS_PORT. 352 */ 353 if (nmp == NULL || (nmp->nm_flag & NFSMNT_NOCONN) == 0) { 354 mtx_unlock(&nrp->nr_mtx); 355 CLNT_CONTROL(client, CLSET_CONNECT, &one); 356 } else { 357 mtx_unlock(&nrp->nr_mtx); 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 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 * 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 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 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 stat = CLNT_CALL_MBUF(nrp->nr_client, &ext, procnum, nd->nd_mreq, 744 &nd->nd_mrep, timo); 745 746 if (rep != NULL) { 747 /* 748 * RPC done, unlink the request. 749 */ 750 NFSLOCKREQ(); 751 TAILQ_REMOVE(&nfsd_reqq, rep, r_chain); 752 NFSUNLOCKREQ(); 753 } 754 755 /* 756 * If there was a successful reply and a tprintf msg. 757 * tprintf a response. 758 */ 759 if (stat == RPC_SUCCESS) { 760 error = 0; 761 } else if (stat == RPC_TIMEDOUT) { 762 NFSINCRGLOBAL(newnfsstats.rpctimeouts); 763 error = ETIMEDOUT; 764 } else if (stat == RPC_VERSMISMATCH) { 765 NFSINCRGLOBAL(newnfsstats.rpcinvalid); 766 error = EOPNOTSUPP; 767 } else if (stat == RPC_PROGVERSMISMATCH) { 768 NFSINCRGLOBAL(newnfsstats.rpcinvalid); 769 error = EPROTONOSUPPORT; 770 } else if (stat == RPC_INTR) { 771 error = EINTR; 772 } else { 773 NFSINCRGLOBAL(newnfsstats.rpcinvalid); 774 error = EACCES; 775 } 776 if (error) { 777 m_freem(nd->nd_mreq); 778 if (usegssname == 0) 779 AUTH_DESTROY(auth); 780 if (rep != NULL) 781 FREE((caddr_t)rep, M_NFSDREQ); 782 if (set_sigset) 783 newnfs_restore_sigmask(td, &oldset); 784 return (error); 785 } 786 787 KASSERT(nd->nd_mrep != NULL, ("mrep shouldn't be NULL if no error\n")); 788 789 /* 790 * Search for any mbufs that are not a multiple of 4 bytes long 791 * or with m_data not longword aligned. 792 * These could cause pointer alignment problems, so copy them to 793 * well aligned mbufs. 794 */ 795 newnfs_realign(&nd->nd_mrep, M_WAITOK); 796 nd->nd_md = nd->nd_mrep; 797 nd->nd_dpos = NFSMTOD(nd->nd_md, caddr_t); 798 nd->nd_repstat = 0; 799 if (nd->nd_procnum != NFSPROC_NULL) { 800 /* If sep == NULL, set it to the default in nmp. */ 801 if (sep == NULL && nmp != NULL) 802 sep = NFSMNT_MDSSESSION(nmp); 803 /* 804 * and now the actual NFS xdr. 805 */ 806 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 807 nd->nd_repstat = fxdr_unsigned(u_int32_t, *tl); 808 if (nd->nd_repstat >= 10000) 809 NFSCL_DEBUG(1, "proc=%d reps=%d\n", (int)nd->nd_procnum, 810 (int)nd->nd_repstat); 811 812 /* 813 * Get rid of the tag, return count and SEQUENCE result for 814 * NFSv4. 815 */ 816 if ((nd->nd_flag & ND_NFSV4) != 0) { 817 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 818 i = fxdr_unsigned(int, *tl); 819 error = nfsm_advance(nd, NFSM_RNDUP(i), -1); 820 if (error) 821 goto nfsmout; 822 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 823 opcnt = fxdr_unsigned(int, *tl++); 824 i = fxdr_unsigned(int, *tl++); 825 j = fxdr_unsigned(int, *tl); 826 if (j >= 10000) 827 NFSCL_DEBUG(1, "fop=%d fst=%d\n", i, j); 828 /* 829 * If the first op is Sequence, free up the slot. 830 */ 831 if (nmp != NULL && i == NFSV4OP_SEQUENCE && j != 0) 832 NFSCL_DEBUG(1, "failed seq=%d\n", j); 833 if (nmp != NULL && i == NFSV4OP_SEQUENCE && j == 0) { 834 NFSM_DISSECT(tl, uint32_t *, NFSX_V4SESSIONID + 835 5 * NFSX_UNSIGNED); 836 mtx_lock(&sep->nfsess_mtx); 837 tl += NFSX_V4SESSIONID / NFSX_UNSIGNED; 838 retseq = fxdr_unsigned(uint32_t, *tl++); 839 slot = fxdr_unsigned(int, *tl++); 840 freeslot = slot; 841 if (retseq != sep->nfsess_slotseq[slot]) 842 printf("retseq diff 0x%x\n", retseq); 843 retval = fxdr_unsigned(uint32_t, *++tl); 844 if ((retval + 1) < sep->nfsess_foreslots) 845 sep->nfsess_foreslots = (retval + 1); 846 else if ((retval + 1) > sep->nfsess_foreslots) 847 sep->nfsess_foreslots = (retval < 64) ? 848 (retval + 1) : 64; 849 mtx_unlock(&sep->nfsess_mtx); 850 851 /* Grab the op and status for the next one. */ 852 if (opcnt > 1) { 853 NFSM_DISSECT(tl, uint32_t *, 854 2 * NFSX_UNSIGNED); 855 i = fxdr_unsigned(int, *tl++); 856 j = fxdr_unsigned(int, *tl); 857 } 858 } 859 } 860 if (nd->nd_repstat != 0) { 861 if (((nd->nd_repstat == NFSERR_DELAY || 862 nd->nd_repstat == NFSERR_GRACE) && 863 (nd->nd_flag & ND_NFSV4) && 864 nd->nd_procnum != NFSPROC_DELEGRETURN && 865 nd->nd_procnum != NFSPROC_SETATTR && 866 nd->nd_procnum != NFSPROC_READ && 867 nd->nd_procnum != NFSPROC_READDS && 868 nd->nd_procnum != NFSPROC_WRITE && 869 nd->nd_procnum != NFSPROC_WRITEDS && 870 nd->nd_procnum != NFSPROC_OPEN && 871 nd->nd_procnum != NFSPROC_CREATE && 872 nd->nd_procnum != NFSPROC_OPENCONFIRM && 873 nd->nd_procnum != NFSPROC_OPENDOWNGRADE && 874 nd->nd_procnum != NFSPROC_CLOSE && 875 nd->nd_procnum != NFSPROC_LOCK && 876 nd->nd_procnum != NFSPROC_LOCKU) || 877 (nd->nd_repstat == NFSERR_DELAY && 878 (nd->nd_flag & ND_NFSV4) == 0) || 879 nd->nd_repstat == NFSERR_RESOURCE) { 880 if (trylater_delay > NFS_TRYLATERDEL) 881 trylater_delay = NFS_TRYLATERDEL; 882 waituntil = NFSD_MONOSEC + trylater_delay; 883 while (NFSD_MONOSEC < waituntil) 884 (void) nfs_catnap(PZERO, 0, "nfstry"); 885 trylater_delay *= 2; 886 if (slot != -1) { 887 mtx_lock(&sep->nfsess_mtx); 888 sep->nfsess_slotseq[slot]++; 889 *nd->nd_slotseq = txdr_unsigned( 890 sep->nfsess_slotseq[slot]); 891 mtx_unlock(&sep->nfsess_mtx); 892 } 893 m_freem(nd->nd_mrep); 894 nd->nd_mrep = NULL; 895 goto tryagain; 896 } 897 898 /* 899 * If the File Handle was stale, invalidate the 900 * lookup cache, just in case. 901 * (vp != NULL implies a client side call) 902 */ 903 if (nd->nd_repstat == ESTALE && vp != NULL) { 904 cache_purge(vp); 905 if (ncl_call_invalcaches != NULL) 906 (*ncl_call_invalcaches)(vp); 907 } 908 } 909 if ((nd->nd_flag & ND_NFSV4) != 0) { 910 /* Free the slot, as required. */ 911 if (freeslot != -1) 912 nfsv4_freeslot(sep, freeslot); 913 /* 914 * If this op is Putfh, throw its results away. 915 */ 916 if (j >= 10000) 917 NFSCL_DEBUG(1, "nop=%d nst=%d\n", i, j); 918 if (nmp != NULL && i == NFSV4OP_PUTFH && j == 0) { 919 NFSM_DISSECT(tl,u_int32_t *,2 * NFSX_UNSIGNED); 920 i = fxdr_unsigned(int, *tl++); 921 j = fxdr_unsigned(int, *tl); 922 if (j >= 10000) 923 NFSCL_DEBUG(1, "n2op=%d n2st=%d\n", i, 924 j); 925 /* 926 * All Compounds that do an Op that must 927 * be in sequence consist of NFSV4OP_PUTFH 928 * followed by one of these. As such, we 929 * can determine if the seqid# should be 930 * incremented, here. 931 */ 932 if ((i == NFSV4OP_OPEN || 933 i == NFSV4OP_OPENCONFIRM || 934 i == NFSV4OP_OPENDOWNGRADE || 935 i == NFSV4OP_CLOSE || 936 i == NFSV4OP_LOCK || 937 i == NFSV4OP_LOCKU) && 938 (j == 0 || 939 (j != NFSERR_STALECLIENTID && 940 j != NFSERR_STALESTATEID && 941 j != NFSERR_BADSTATEID && 942 j != NFSERR_BADSEQID && 943 j != NFSERR_BADXDR && 944 j != NFSERR_RESOURCE && 945 j != NFSERR_NOFILEHANDLE))) 946 nd->nd_flag |= ND_INCRSEQID; 947 } 948 /* 949 * If this op's status is non-zero, mark 950 * that there is no more data to process. 951 */ 952 if (j) 953 nd->nd_flag |= ND_NOMOREDATA; 954 955 /* 956 * If R_DONTRECOVER is set, replace the stale error 957 * reply, so that recovery isn't initiated. 958 */ 959 if ((nd->nd_repstat == NFSERR_STALECLIENTID || 960 nd->nd_repstat == NFSERR_BADSESSION || 961 nd->nd_repstat == NFSERR_STALESTATEID) && 962 rep != NULL && (rep->r_flags & R_DONTRECOVER)) 963 nd->nd_repstat = NFSERR_STALEDONTRECOVER; 964 } 965 } 966 967 #ifdef KDTRACE_HOOKS 968 if (nmp != NULL && dtrace_nfscl_nfs234_done_probe != NULL) { 969 uint32_t probe_id; 970 int probe_procnum; 971 972 if (nd->nd_flag & ND_NFSV4) { 973 probe_id = nfscl_nfs4_done_probes[nd->nd_procnum]; 974 probe_procnum = nd->nd_procnum; 975 } else if (nd->nd_flag & ND_NFSV3) { 976 probe_id = nfscl_nfs3_done_probes[procnum]; 977 probe_procnum = procnum; 978 } else { 979 probe_id = nfscl_nfs2_done_probes[nd->nd_procnum]; 980 probe_procnum = procnum; 981 } 982 if (probe_id != 0) 983 (dtrace_nfscl_nfs234_done_probe)(probe_id, vp, 984 nd->nd_mreq, cred, probe_procnum, 0); 985 } 986 #endif 987 988 m_freem(nd->nd_mreq); 989 if (usegssname == 0) 990 AUTH_DESTROY(auth); 991 if (rep != NULL) 992 FREE((caddr_t)rep, M_NFSDREQ); 993 if (set_sigset) 994 newnfs_restore_sigmask(td, &oldset); 995 return (0); 996 nfsmout: 997 mbuf_freem(nd->nd_mrep); 998 mbuf_freem(nd->nd_mreq); 999 if (usegssname == 0) 1000 AUTH_DESTROY(auth); 1001 if (rep != NULL) 1002 FREE((caddr_t)rep, M_NFSDREQ); 1003 if (set_sigset) 1004 newnfs_restore_sigmask(td, &oldset); 1005 return (error); 1006 } 1007 1008 /* 1009 * Mark all of an nfs mount's outstanding requests with R_SOFTTERM and 1010 * wait for all requests to complete. This is used by forced unmounts 1011 * to terminate any outstanding RPCs. 1012 */ 1013 int 1014 newnfs_nmcancelreqs(struct nfsmount *nmp) 1015 { 1016 1017 if (nmp->nm_sockreq.nr_client != NULL) 1018 CLNT_CLOSE(nmp->nm_sockreq.nr_client); 1019 return (0); 1020 } 1021 1022 /* 1023 * Any signal that can interrupt an NFS operation in an intr mount 1024 * should be added to this set. SIGSTOP and SIGKILL cannot be masked. 1025 */ 1026 int newnfs_sig_set[] = { 1027 SIGINT, 1028 SIGTERM, 1029 SIGHUP, 1030 SIGKILL, 1031 SIGQUIT 1032 }; 1033 1034 /* 1035 * Check to see if one of the signals in our subset is pending on 1036 * the process (in an intr mount). 1037 */ 1038 static int 1039 nfs_sig_pending(sigset_t set) 1040 { 1041 int i; 1042 1043 for (i = 0 ; i < sizeof(newnfs_sig_set)/sizeof(int) ; i++) 1044 if (SIGISMEMBER(set, newnfs_sig_set[i])) 1045 return (1); 1046 return (0); 1047 } 1048 1049 /* 1050 * The set/restore sigmask functions are used to (temporarily) overwrite 1051 * the thread td_sigmask during an RPC call (for example). These are also 1052 * used in other places in the NFS client that might tsleep(). 1053 */ 1054 void 1055 newnfs_set_sigmask(struct thread *td, sigset_t *oldset) 1056 { 1057 sigset_t newset; 1058 int i; 1059 struct proc *p; 1060 1061 SIGFILLSET(newset); 1062 if (td == NULL) 1063 td = curthread; /* XXX */ 1064 p = td->td_proc; 1065 /* Remove the NFS set of signals from newset */ 1066 PROC_LOCK(p); 1067 mtx_lock(&p->p_sigacts->ps_mtx); 1068 for (i = 0 ; i < sizeof(newnfs_sig_set)/sizeof(int) ; i++) { 1069 /* 1070 * But make sure we leave the ones already masked 1071 * by the process, ie. remove the signal from the 1072 * temporary signalmask only if it wasn't already 1073 * in p_sigmask. 1074 */ 1075 if (!SIGISMEMBER(td->td_sigmask, newnfs_sig_set[i]) && 1076 !SIGISMEMBER(p->p_sigacts->ps_sigignore, newnfs_sig_set[i])) 1077 SIGDELSET(newset, newnfs_sig_set[i]); 1078 } 1079 mtx_unlock(&p->p_sigacts->ps_mtx); 1080 kern_sigprocmask(td, SIG_SETMASK, &newset, oldset, 1081 SIGPROCMASK_PROC_LOCKED); 1082 PROC_UNLOCK(p); 1083 } 1084 1085 void 1086 newnfs_restore_sigmask(struct thread *td, sigset_t *set) 1087 { 1088 if (td == NULL) 1089 td = curthread; /* XXX */ 1090 kern_sigprocmask(td, SIG_SETMASK, set, NULL, 0); 1091 } 1092 1093 /* 1094 * NFS wrapper to msleep(), that shoves a new p_sigmask and restores the 1095 * old one after msleep() returns. 1096 */ 1097 int 1098 newnfs_msleep(struct thread *td, void *ident, struct mtx *mtx, int priority, char *wmesg, int timo) 1099 { 1100 sigset_t oldset; 1101 int error; 1102 struct proc *p; 1103 1104 if ((priority & PCATCH) == 0) 1105 return msleep(ident, mtx, priority, wmesg, timo); 1106 if (td == NULL) 1107 td = curthread; /* XXX */ 1108 newnfs_set_sigmask(td, &oldset); 1109 error = msleep(ident, mtx, priority, wmesg, timo); 1110 newnfs_restore_sigmask(td, &oldset); 1111 p = td->td_proc; 1112 return (error); 1113 } 1114 1115 /* 1116 * Test for a termination condition pending on the process. 1117 * This is used for NFSMNT_INT mounts. 1118 */ 1119 int 1120 newnfs_sigintr(struct nfsmount *nmp, struct thread *td) 1121 { 1122 struct proc *p; 1123 sigset_t tmpset; 1124 1125 /* Terminate all requests while attempting a forced unmount. */ 1126 if (nmp->nm_mountp->mnt_kern_flag & MNTK_UNMOUNTF) 1127 return (EIO); 1128 if (!(nmp->nm_flag & NFSMNT_INT)) 1129 return (0); 1130 if (td == NULL) 1131 return (0); 1132 p = td->td_proc; 1133 PROC_LOCK(p); 1134 tmpset = p->p_siglist; 1135 SIGSETOR(tmpset, td->td_siglist); 1136 SIGSETNAND(tmpset, td->td_sigmask); 1137 mtx_lock(&p->p_sigacts->ps_mtx); 1138 SIGSETNAND(tmpset, p->p_sigacts->ps_sigignore); 1139 mtx_unlock(&p->p_sigacts->ps_mtx); 1140 if ((SIGNOTEMPTY(p->p_siglist) || SIGNOTEMPTY(td->td_siglist)) 1141 && nfs_sig_pending(tmpset)) { 1142 PROC_UNLOCK(p); 1143 return (EINTR); 1144 } 1145 PROC_UNLOCK(p); 1146 return (0); 1147 } 1148 1149 static int 1150 nfs_msg(struct thread *td, const char *server, const char *msg, int error) 1151 { 1152 struct proc *p; 1153 1154 p = td ? td->td_proc : NULL; 1155 if (error) { 1156 tprintf(p, LOG_INFO, "newnfs server %s: %s, error %d\n", 1157 server, msg, error); 1158 } else { 1159 tprintf(p, LOG_INFO, "newnfs server %s: %s\n", server, msg); 1160 } 1161 return (0); 1162 } 1163 1164 static void 1165 nfs_down(struct nfsmount *nmp, struct thread *td, const char *msg, 1166 int error, int flags) 1167 { 1168 if (nmp == NULL) 1169 return; 1170 mtx_lock(&nmp->nm_mtx); 1171 if ((flags & NFSSTA_TIMEO) && !(nmp->nm_state & NFSSTA_TIMEO)) { 1172 nmp->nm_state |= NFSSTA_TIMEO; 1173 mtx_unlock(&nmp->nm_mtx); 1174 vfs_event_signal(&nmp->nm_mountp->mnt_stat.f_fsid, 1175 VQ_NOTRESP, 0); 1176 } else 1177 mtx_unlock(&nmp->nm_mtx); 1178 mtx_lock(&nmp->nm_mtx); 1179 if ((flags & NFSSTA_LOCKTIMEO) && !(nmp->nm_state & NFSSTA_LOCKTIMEO)) { 1180 nmp->nm_state |= NFSSTA_LOCKTIMEO; 1181 mtx_unlock(&nmp->nm_mtx); 1182 vfs_event_signal(&nmp->nm_mountp->mnt_stat.f_fsid, 1183 VQ_NOTRESPLOCK, 0); 1184 } else 1185 mtx_unlock(&nmp->nm_mtx); 1186 nfs_msg(td, nmp->nm_mountp->mnt_stat.f_mntfromname, msg, error); 1187 } 1188 1189 static void 1190 nfs_up(struct nfsmount *nmp, struct thread *td, const char *msg, 1191 int flags, int tprintfmsg) 1192 { 1193 if (nmp == NULL) 1194 return; 1195 if (tprintfmsg) { 1196 nfs_msg(td, nmp->nm_mountp->mnt_stat.f_mntfromname, msg, 0); 1197 } 1198 1199 mtx_lock(&nmp->nm_mtx); 1200 if ((flags & NFSSTA_TIMEO) && (nmp->nm_state & NFSSTA_TIMEO)) { 1201 nmp->nm_state &= ~NFSSTA_TIMEO; 1202 mtx_unlock(&nmp->nm_mtx); 1203 vfs_event_signal(&nmp->nm_mountp->mnt_stat.f_fsid, 1204 VQ_NOTRESP, 1); 1205 } else 1206 mtx_unlock(&nmp->nm_mtx); 1207 1208 mtx_lock(&nmp->nm_mtx); 1209 if ((flags & NFSSTA_LOCKTIMEO) && (nmp->nm_state & NFSSTA_LOCKTIMEO)) { 1210 nmp->nm_state &= ~NFSSTA_LOCKTIMEO; 1211 mtx_unlock(&nmp->nm_mtx); 1212 vfs_event_signal(&nmp->nm_mountp->mnt_stat.f_fsid, 1213 VQ_NOTRESPLOCK, 1); 1214 } else 1215 mtx_unlock(&nmp->nm_mtx); 1216 } 1217 1218