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