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 time_t now; 463 464 switch (type) { 465 case FEEDBACK_REXMIT2: 466 case FEEDBACK_RECONNECT: 467 now = NFSD_MONOSEC; 468 if (nf->nf_lastmsg + nmp->nm_tprintf_delay < now) { 469 nfs_down(nmp, nf->nf_td, 470 "not responding", 0, NFSSTA_TIMEO); 471 nf->nf_tprintfmsg = TRUE; 472 nf->nf_lastmsg = now; 473 } 474 break; 475 476 case FEEDBACK_OK: 477 nfs_up(nf->nf_mount, nf->nf_td, 478 "is alive again", NFSSTA_TIMEO, nf->nf_tprintfmsg); 479 break; 480 } 481 } 482 483 /* 484 * newnfs_request - goes something like this 485 * - does the rpc by calling the krpc layer 486 * - break down rpc header and return with nfs reply 487 * nb: always frees up nd_mreq mbuf list 488 */ 489 int 490 newnfs_request(struct nfsrv_descript *nd, struct nfsmount *nmp, 491 struct nfsclient *clp, struct nfssockreq *nrp, vnode_t vp, 492 struct thread *td, struct ucred *cred, u_int32_t prog, u_int32_t vers, 493 u_char *retsum, int toplevel, u_int64_t *xidp, struct nfsclsession *sep) 494 { 495 u_int32_t retseq, retval, *tl; 496 time_t waituntil; 497 int i = 0, j = 0, opcnt, set_sigset = 0, slot; 498 int trycnt, error = 0, usegssname = 0, secflavour = AUTH_SYS; 499 int freeslot, timeo; 500 u_int16_t procnum; 501 u_int trylater_delay = 1; 502 struct nfs_feedback_arg nf; 503 struct timeval timo; 504 AUTH *auth; 505 struct rpc_callextra ext; 506 enum clnt_stat stat; 507 struct nfsreq *rep = NULL; 508 char *srv_principal = NULL; 509 sigset_t oldset; 510 struct ucred *authcred; 511 512 if (xidp != NULL) 513 *xidp = 0; 514 /* Reject requests while attempting a forced unmount. */ 515 if (nmp != NULL && (nmp->nm_mountp->mnt_kern_flag & MNTK_UNMOUNTF)) { 516 m_freem(nd->nd_mreq); 517 return (ESTALE); 518 } 519 520 /* 521 * Set authcred, which is used to acquire RPC credentials to 522 * the cred argument, by default. The crhold() should not be 523 * necessary, but will ensure that some future code change 524 * doesn't result in the credential being free'd prematurely. 525 */ 526 authcred = crhold(cred); 527 528 /* For client side interruptible mounts, mask off the signals. */ 529 if (nmp != NULL && td != NULL && NFSHASINT(nmp)) { 530 newnfs_set_sigmask(td, &oldset); 531 set_sigset = 1; 532 } 533 534 /* 535 * XXX if not already connected call nfs_connect now. Longer 536 * term, change nfs_mount to call nfs_connect unconditionally 537 * and let clnt_reconnect_create handle reconnects. 538 */ 539 if (nrp->nr_client == NULL) 540 newnfs_connect(nmp, nrp, cred, td, 0); 541 542 /* 543 * For a client side mount, nmp is != NULL and clp == NULL. For 544 * server calls (callbacks or upcalls), nmp == NULL. 545 */ 546 if (clp != NULL) { 547 NFSLOCKSTATE(); 548 if ((clp->lc_flags & LCL_GSS) && nfsrv_gsscallbackson) { 549 secflavour = RPCSEC_GSS_KRB5; 550 if (nd->nd_procnum != NFSPROC_NULL) { 551 if (clp->lc_flags & LCL_GSSINTEGRITY) 552 secflavour = RPCSEC_GSS_KRB5I; 553 else if (clp->lc_flags & LCL_GSSPRIVACY) 554 secflavour = RPCSEC_GSS_KRB5P; 555 } 556 } 557 NFSUNLOCKSTATE(); 558 } else if (nmp != NULL && NFSHASKERB(nmp) && 559 nd->nd_procnum != NFSPROC_NULL) { 560 if (NFSHASALLGSSNAME(nmp) && nmp->nm_krbnamelen > 0) 561 nd->nd_flag |= ND_USEGSSNAME; 562 if ((nd->nd_flag & ND_USEGSSNAME) != 0) { 563 /* 564 * If there is a client side host based credential, 565 * use that, otherwise use the system uid, if set. 566 * The system uid is in the nmp->nm_sockreq.nr_cred 567 * credentials. 568 */ 569 if (nmp->nm_krbnamelen > 0) { 570 usegssname = 1; 571 } else if (nmp->nm_uid != (uid_t)-1) { 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 } else if (nmp->nm_krbnamelen == 0 && 578 nmp->nm_uid != (uid_t)-1 && cred->cr_uid == (uid_t)0) { 579 /* 580 * If there is no host based principal name and 581 * the system uid is set and this is root, use the 582 * system uid, since root won't have user 583 * credentials in a credentials cache file. 584 * The system uid is in the nmp->nm_sockreq.nr_cred 585 * credentials. 586 */ 587 KASSERT(nmp->nm_sockreq.nr_cred != NULL, 588 ("newnfs_request: NULL nr_cred")); 589 crfree(authcred); 590 authcred = crhold(nmp->nm_sockreq.nr_cred); 591 } 592 if (NFSHASINTEGRITY(nmp)) 593 secflavour = RPCSEC_GSS_KRB5I; 594 else if (NFSHASPRIVACY(nmp)) 595 secflavour = RPCSEC_GSS_KRB5P; 596 else 597 secflavour = RPCSEC_GSS_KRB5; 598 srv_principal = NFSMNT_SRVKRBNAME(nmp); 599 } else if (nmp != NULL && !NFSHASKERB(nmp) && 600 nd->nd_procnum != NFSPROC_NULL && 601 (nd->nd_flag & ND_USEGSSNAME) != 0) { 602 /* 603 * Use the uid that did the mount when the RPC is doing 604 * NFSv4 system operations, as indicated by the 605 * ND_USEGSSNAME flag, for the AUTH_SYS case. 606 * The credentials in nm_sockreq.nr_cred were used for the 607 * mount. 608 */ 609 KASSERT(nmp->nm_sockreq.nr_cred != NULL, 610 ("newnfs_request: NULL nr_cred")); 611 crfree(authcred); 612 authcred = crhold(nmp->nm_sockreq.nr_cred); 613 } 614 615 if (nmp != NULL) { 616 bzero(&nf, sizeof(struct nfs_feedback_arg)); 617 nf.nf_mount = nmp; 618 nf.nf_td = td; 619 nf.nf_lastmsg = NFSD_MONOSEC - 620 ((nmp->nm_tprintf_delay)-(nmp->nm_tprintf_initial_delay)); 621 } 622 623 if (nd->nd_procnum == NFSPROC_NULL) 624 auth = authnone_create(); 625 else if (usegssname) 626 auth = nfs_getauth(nrp, secflavour, nmp->nm_krbname, 627 srv_principal, NULL, authcred); 628 else 629 auth = nfs_getauth(nrp, secflavour, NULL, 630 srv_principal, NULL, authcred); 631 crfree(authcred); 632 if (auth == NULL) { 633 m_freem(nd->nd_mreq); 634 if (set_sigset) 635 newnfs_restore_sigmask(td, &oldset); 636 return (EACCES); 637 } 638 bzero(&ext, sizeof(ext)); 639 ext.rc_auth = auth; 640 if (nmp != NULL) { 641 ext.rc_feedback = nfs_feedback; 642 ext.rc_feedback_arg = &nf; 643 } 644 645 procnum = nd->nd_procnum; 646 if ((nd->nd_flag & ND_NFSV4) && 647 nd->nd_procnum != NFSPROC_NULL && 648 nd->nd_procnum != NFSV4PROC_CBCOMPOUND) 649 procnum = NFSV4PROC_COMPOUND; 650 651 if (nmp != NULL) { 652 NFSINCRGLOBAL(newnfsstats.rpcrequests); 653 654 /* Map the procnum to the old NFSv2 one, as required. */ 655 if ((nd->nd_flag & ND_NFSV2) != 0) { 656 if (nd->nd_procnum < NFS_V3NPROCS) 657 procnum = nfsv2_procid[nd->nd_procnum]; 658 else 659 procnum = NFSV2PROC_NOOP; 660 } 661 662 /* 663 * Now only used for the R_DONTRECOVER case, but until that is 664 * supported within the krpc code, I need to keep a queue of 665 * outstanding RPCs for nfsv4 client requests. 666 */ 667 if ((nd->nd_flag & ND_NFSV4) && procnum == NFSV4PROC_COMPOUND) 668 MALLOC(rep, struct nfsreq *, sizeof(struct nfsreq), 669 M_NFSDREQ, M_WAITOK); 670 #ifdef KDTRACE_HOOKS 671 if (dtrace_nfscl_nfs234_start_probe != NULL) { 672 uint32_t probe_id; 673 int probe_procnum; 674 675 if (nd->nd_flag & ND_NFSV4) { 676 probe_id = 677 nfscl_nfs4_start_probes[nd->nd_procnum]; 678 probe_procnum = nd->nd_procnum; 679 } else if (nd->nd_flag & ND_NFSV3) { 680 probe_id = nfscl_nfs3_start_probes[procnum]; 681 probe_procnum = procnum; 682 } else { 683 probe_id = 684 nfscl_nfs2_start_probes[nd->nd_procnum]; 685 probe_procnum = procnum; 686 } 687 if (probe_id != 0) 688 (dtrace_nfscl_nfs234_start_probe) 689 (probe_id, vp, nd->nd_mreq, cred, 690 probe_procnum); 691 } 692 #endif 693 } 694 trycnt = 0; 695 freeslot = -1; /* Set to slot that needs to be free'd */ 696 tryagain: 697 slot = -1; /* Slot that needs a sequence# increment. */ 698 /* 699 * This timeout specifies when a new socket should be created, 700 * along with new xid values. For UDP, this should be done 701 * infrequently, since retransmits of RPC requests should normally 702 * use the same xid. 703 */ 704 if (nmp == NULL) { 705 timo.tv_usec = 0; 706 if (clp == NULL) 707 timo.tv_sec = NFSV4_UPCALLTIMEO; 708 else 709 timo.tv_sec = NFSV4_CALLBACKTIMEO; 710 } else { 711 if (nrp->nr_sotype != SOCK_DGRAM) { 712 timo.tv_usec = 0; 713 if ((nmp->nm_flag & NFSMNT_NFSV4)) 714 timo.tv_sec = INT_MAX; 715 else 716 timo.tv_sec = NFS_TCPTIMEO; 717 } else { 718 if (NFSHASSOFT(nmp)) { 719 /* 720 * CLSET_RETRIES is set to 2, so this should be 721 * half of the total timeout required. 722 */ 723 timeo = nmp->nm_retry * nmp->nm_timeo / 2; 724 if (timeo < 1) 725 timeo = 1; 726 timo.tv_sec = timeo / NFS_HZ; 727 timo.tv_usec = (timeo % NFS_HZ) * 1000000 / 728 NFS_HZ; 729 } else { 730 /* For UDP hard mounts, use a large value. */ 731 timo.tv_sec = NFS_MAXTIMEO / NFS_HZ; 732 timo.tv_usec = 0; 733 } 734 } 735 736 if (rep != NULL) { 737 rep->r_flags = 0; 738 rep->r_nmp = nmp; 739 /* 740 * Chain request into list of outstanding requests. 741 */ 742 NFSLOCKREQ(); 743 TAILQ_INSERT_TAIL(&nfsd_reqq, rep, r_chain); 744 NFSUNLOCKREQ(); 745 } 746 } 747 748 nd->nd_mrep = NULL; 749 stat = CLNT_CALL_MBUF(nrp->nr_client, &ext, procnum, nd->nd_mreq, 750 &nd->nd_mrep, timo); 751 752 if (rep != NULL) { 753 /* 754 * RPC done, unlink the request. 755 */ 756 NFSLOCKREQ(); 757 TAILQ_REMOVE(&nfsd_reqq, rep, r_chain); 758 NFSUNLOCKREQ(); 759 } 760 761 /* 762 * If there was a successful reply and a tprintf msg. 763 * tprintf a response. 764 */ 765 if (stat == RPC_SUCCESS) { 766 error = 0; 767 } else if (stat == RPC_TIMEDOUT) { 768 NFSINCRGLOBAL(newnfsstats.rpctimeouts); 769 error = ETIMEDOUT; 770 } else if (stat == RPC_VERSMISMATCH) { 771 NFSINCRGLOBAL(newnfsstats.rpcinvalid); 772 error = EOPNOTSUPP; 773 } else if (stat == RPC_PROGVERSMISMATCH) { 774 NFSINCRGLOBAL(newnfsstats.rpcinvalid); 775 error = EPROTONOSUPPORT; 776 } else if (stat == RPC_INTR) { 777 error = EINTR; 778 } else { 779 NFSINCRGLOBAL(newnfsstats.rpcinvalid); 780 error = EACCES; 781 } 782 if (error) { 783 m_freem(nd->nd_mreq); 784 AUTH_DESTROY(auth); 785 if (rep != NULL) 786 FREE((caddr_t)rep, M_NFSDREQ); 787 if (set_sigset) 788 newnfs_restore_sigmask(td, &oldset); 789 return (error); 790 } 791 792 KASSERT(nd->nd_mrep != NULL, ("mrep shouldn't be NULL if no error\n")); 793 794 /* 795 * Search for any mbufs that are not a multiple of 4 bytes long 796 * or with m_data not longword aligned. 797 * These could cause pointer alignment problems, so copy them to 798 * well aligned mbufs. 799 */ 800 newnfs_realign(&nd->nd_mrep, M_WAITOK); 801 nd->nd_md = nd->nd_mrep; 802 nd->nd_dpos = NFSMTOD(nd->nd_md, caddr_t); 803 nd->nd_repstat = 0; 804 if (nd->nd_procnum != NFSPROC_NULL) { 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 NFSCL_DEBUG(1, "failed seq=%d\n", j); 838 if (nmp != NULL && i == NFSV4OP_SEQUENCE && j == 0) { 839 NFSM_DISSECT(tl, uint32_t *, NFSX_V4SESSIONID + 840 5 * NFSX_UNSIGNED); 841 mtx_lock(&sep->nfsess_mtx); 842 tl += NFSX_V4SESSIONID / NFSX_UNSIGNED; 843 retseq = fxdr_unsigned(uint32_t, *tl++); 844 slot = fxdr_unsigned(int, *tl++); 845 freeslot = slot; 846 if (retseq != sep->nfsess_slotseq[slot]) 847 printf("retseq diff 0x%x\n", retseq); 848 retval = fxdr_unsigned(uint32_t, *++tl); 849 if ((retval + 1) < sep->nfsess_foreslots) 850 sep->nfsess_foreslots = (retval + 1); 851 else if ((retval + 1) > sep->nfsess_foreslots) 852 sep->nfsess_foreslots = (retval < 64) ? 853 (retval + 1) : 64; 854 mtx_unlock(&sep->nfsess_mtx); 855 856 /* Grab the op and status for the next one. */ 857 if (opcnt > 1) { 858 NFSM_DISSECT(tl, uint32_t *, 859 2 * NFSX_UNSIGNED); 860 i = fxdr_unsigned(int, *tl++); 861 j = fxdr_unsigned(int, *tl); 862 } 863 } 864 } 865 if (nd->nd_repstat != 0) { 866 if (((nd->nd_repstat == NFSERR_DELAY || 867 nd->nd_repstat == NFSERR_GRACE) && 868 (nd->nd_flag & ND_NFSV4) && 869 nd->nd_procnum != NFSPROC_DELEGRETURN && 870 nd->nd_procnum != NFSPROC_SETATTR && 871 nd->nd_procnum != NFSPROC_READ && 872 nd->nd_procnum != NFSPROC_READDS && 873 nd->nd_procnum != NFSPROC_WRITE && 874 nd->nd_procnum != NFSPROC_WRITEDS && 875 nd->nd_procnum != NFSPROC_OPEN && 876 nd->nd_procnum != NFSPROC_CREATE && 877 nd->nd_procnum != NFSPROC_OPENCONFIRM && 878 nd->nd_procnum != NFSPROC_OPENDOWNGRADE && 879 nd->nd_procnum != NFSPROC_CLOSE && 880 nd->nd_procnum != NFSPROC_LOCK && 881 nd->nd_procnum != NFSPROC_LOCKU) || 882 (nd->nd_repstat == NFSERR_DELAY && 883 (nd->nd_flag & ND_NFSV4) == 0) || 884 nd->nd_repstat == NFSERR_RESOURCE) { 885 if (trylater_delay > NFS_TRYLATERDEL) 886 trylater_delay = NFS_TRYLATERDEL; 887 waituntil = NFSD_MONOSEC + trylater_delay; 888 while (NFSD_MONOSEC < waituntil) 889 (void) nfs_catnap(PZERO, 0, "nfstry"); 890 trylater_delay *= 2; 891 if (slot != -1) { 892 mtx_lock(&sep->nfsess_mtx); 893 sep->nfsess_slotseq[slot]++; 894 *nd->nd_slotseq = txdr_unsigned( 895 sep->nfsess_slotseq[slot]); 896 mtx_unlock(&sep->nfsess_mtx); 897 } 898 m_freem(nd->nd_mrep); 899 nd->nd_mrep = NULL; 900 goto tryagain; 901 } 902 903 /* 904 * If the File Handle was stale, invalidate the 905 * lookup cache, just in case. 906 * (vp != NULL implies a client side call) 907 */ 908 if (nd->nd_repstat == ESTALE && vp != NULL) { 909 cache_purge(vp); 910 if (ncl_call_invalcaches != NULL) 911 (*ncl_call_invalcaches)(vp); 912 } 913 } 914 if ((nd->nd_flag & ND_NFSV4) != 0) { 915 /* Free the slot, as required. */ 916 if (freeslot != -1) 917 nfsv4_freeslot(sep, freeslot); 918 /* 919 * If this op is Putfh, throw its results away. 920 */ 921 if (j >= 10000) 922 NFSCL_DEBUG(1, "nop=%d nst=%d\n", i, j); 923 if (nmp != NULL && i == NFSV4OP_PUTFH && j == 0) { 924 NFSM_DISSECT(tl,u_int32_t *,2 * NFSX_UNSIGNED); 925 i = fxdr_unsigned(int, *tl++); 926 j = fxdr_unsigned(int, *tl); 927 if (j >= 10000) 928 NFSCL_DEBUG(1, "n2op=%d n2st=%d\n", i, 929 j); 930 /* 931 * All Compounds that do an Op that must 932 * be in sequence consist of NFSV4OP_PUTFH 933 * followed by one of these. As such, we 934 * can determine if the seqid# should be 935 * incremented, here. 936 */ 937 if ((i == NFSV4OP_OPEN || 938 i == NFSV4OP_OPENCONFIRM || 939 i == NFSV4OP_OPENDOWNGRADE || 940 i == NFSV4OP_CLOSE || 941 i == NFSV4OP_LOCK || 942 i == NFSV4OP_LOCKU) && 943 (j == 0 || 944 (j != NFSERR_STALECLIENTID && 945 j != NFSERR_STALESTATEID && 946 j != NFSERR_BADSTATEID && 947 j != NFSERR_BADSEQID && 948 j != NFSERR_BADXDR && 949 j != NFSERR_RESOURCE && 950 j != NFSERR_NOFILEHANDLE))) 951 nd->nd_flag |= ND_INCRSEQID; 952 } 953 /* 954 * If this op's status is non-zero, mark 955 * that there is no more data to process. 956 */ 957 if (j) 958 nd->nd_flag |= ND_NOMOREDATA; 959 960 /* 961 * If R_DONTRECOVER is set, replace the stale error 962 * reply, so that recovery isn't initiated. 963 */ 964 if ((nd->nd_repstat == NFSERR_STALECLIENTID || 965 nd->nd_repstat == NFSERR_BADSESSION || 966 nd->nd_repstat == NFSERR_STALESTATEID) && 967 rep != NULL && (rep->r_flags & R_DONTRECOVER)) 968 nd->nd_repstat = NFSERR_STALEDONTRECOVER; 969 } 970 } 971 972 #ifdef KDTRACE_HOOKS 973 if (nmp != NULL && dtrace_nfscl_nfs234_done_probe != NULL) { 974 uint32_t probe_id; 975 int probe_procnum; 976 977 if (nd->nd_flag & ND_NFSV4) { 978 probe_id = nfscl_nfs4_done_probes[nd->nd_procnum]; 979 probe_procnum = nd->nd_procnum; 980 } else if (nd->nd_flag & ND_NFSV3) { 981 probe_id = nfscl_nfs3_done_probes[procnum]; 982 probe_procnum = procnum; 983 } else { 984 probe_id = nfscl_nfs2_done_probes[nd->nd_procnum]; 985 probe_procnum = procnum; 986 } 987 if (probe_id != 0) 988 (dtrace_nfscl_nfs234_done_probe)(probe_id, vp, 989 nd->nd_mreq, cred, probe_procnum, 0); 990 } 991 #endif 992 993 m_freem(nd->nd_mreq); 994 AUTH_DESTROY(auth); 995 if (rep != NULL) 996 FREE((caddr_t)rep, M_NFSDREQ); 997 if (set_sigset) 998 newnfs_restore_sigmask(td, &oldset); 999 return (0); 1000 nfsmout: 1001 mbuf_freem(nd->nd_mrep); 1002 mbuf_freem(nd->nd_mreq); 1003 AUTH_DESTROY(auth); 1004 if (rep != NULL) 1005 FREE((caddr_t)rep, M_NFSDREQ); 1006 if (set_sigset) 1007 newnfs_restore_sigmask(td, &oldset); 1008 return (error); 1009 } 1010 1011 /* 1012 * Mark all of an nfs mount's outstanding requests with R_SOFTTERM and 1013 * wait for all requests to complete. This is used by forced unmounts 1014 * to terminate any outstanding RPCs. 1015 */ 1016 int 1017 newnfs_nmcancelreqs(struct nfsmount *nmp) 1018 { 1019 1020 if (nmp->nm_sockreq.nr_client != NULL) 1021 CLNT_CLOSE(nmp->nm_sockreq.nr_client); 1022 return (0); 1023 } 1024 1025 /* 1026 * Any signal that can interrupt an NFS operation in an intr mount 1027 * should be added to this set. SIGSTOP and SIGKILL cannot be masked. 1028 */ 1029 int newnfs_sig_set[] = { 1030 SIGINT, 1031 SIGTERM, 1032 SIGHUP, 1033 SIGKILL, 1034 SIGQUIT 1035 }; 1036 1037 /* 1038 * Check to see if one of the signals in our subset is pending on 1039 * the process (in an intr mount). 1040 */ 1041 static int 1042 nfs_sig_pending(sigset_t set) 1043 { 1044 int i; 1045 1046 for (i = 0 ; i < sizeof(newnfs_sig_set)/sizeof(int) ; i++) 1047 if (SIGISMEMBER(set, newnfs_sig_set[i])) 1048 return (1); 1049 return (0); 1050 } 1051 1052 /* 1053 * The set/restore sigmask functions are used to (temporarily) overwrite 1054 * the thread td_sigmask during an RPC call (for example). These are also 1055 * used in other places in the NFS client that might tsleep(). 1056 */ 1057 void 1058 newnfs_set_sigmask(struct thread *td, sigset_t *oldset) 1059 { 1060 sigset_t newset; 1061 int i; 1062 struct proc *p; 1063 1064 SIGFILLSET(newset); 1065 if (td == NULL) 1066 td = curthread; /* XXX */ 1067 p = td->td_proc; 1068 /* Remove the NFS set of signals from newset */ 1069 PROC_LOCK(p); 1070 mtx_lock(&p->p_sigacts->ps_mtx); 1071 for (i = 0 ; i < sizeof(newnfs_sig_set)/sizeof(int) ; i++) { 1072 /* 1073 * But make sure we leave the ones already masked 1074 * by the process, ie. remove the signal from the 1075 * temporary signalmask only if it wasn't already 1076 * in p_sigmask. 1077 */ 1078 if (!SIGISMEMBER(td->td_sigmask, newnfs_sig_set[i]) && 1079 !SIGISMEMBER(p->p_sigacts->ps_sigignore, newnfs_sig_set[i])) 1080 SIGDELSET(newset, newnfs_sig_set[i]); 1081 } 1082 mtx_unlock(&p->p_sigacts->ps_mtx); 1083 kern_sigprocmask(td, SIG_SETMASK, &newset, oldset, 1084 SIGPROCMASK_PROC_LOCKED); 1085 PROC_UNLOCK(p); 1086 } 1087 1088 void 1089 newnfs_restore_sigmask(struct thread *td, sigset_t *set) 1090 { 1091 if (td == NULL) 1092 td = curthread; /* XXX */ 1093 kern_sigprocmask(td, SIG_SETMASK, set, NULL, 0); 1094 } 1095 1096 /* 1097 * NFS wrapper to msleep(), that shoves a new p_sigmask and restores the 1098 * old one after msleep() returns. 1099 */ 1100 int 1101 newnfs_msleep(struct thread *td, void *ident, struct mtx *mtx, int priority, char *wmesg, int timo) 1102 { 1103 sigset_t oldset; 1104 int error; 1105 struct proc *p; 1106 1107 if ((priority & PCATCH) == 0) 1108 return msleep(ident, mtx, priority, wmesg, timo); 1109 if (td == NULL) 1110 td = curthread; /* XXX */ 1111 newnfs_set_sigmask(td, &oldset); 1112 error = msleep(ident, mtx, priority, wmesg, timo); 1113 newnfs_restore_sigmask(td, &oldset); 1114 p = td->td_proc; 1115 return (error); 1116 } 1117 1118 /* 1119 * Test for a termination condition pending on the process. 1120 * This is used for NFSMNT_INT mounts. 1121 */ 1122 int 1123 newnfs_sigintr(struct nfsmount *nmp, struct thread *td) 1124 { 1125 struct proc *p; 1126 sigset_t tmpset; 1127 1128 /* Terminate all requests while attempting a forced unmount. */ 1129 if (nmp->nm_mountp->mnt_kern_flag & MNTK_UNMOUNTF) 1130 return (EIO); 1131 if (!(nmp->nm_flag & NFSMNT_INT)) 1132 return (0); 1133 if (td == NULL) 1134 return (0); 1135 p = td->td_proc; 1136 PROC_LOCK(p); 1137 tmpset = p->p_siglist; 1138 SIGSETOR(tmpset, td->td_siglist); 1139 SIGSETNAND(tmpset, td->td_sigmask); 1140 mtx_lock(&p->p_sigacts->ps_mtx); 1141 SIGSETNAND(tmpset, p->p_sigacts->ps_sigignore); 1142 mtx_unlock(&p->p_sigacts->ps_mtx); 1143 if ((SIGNOTEMPTY(p->p_siglist) || SIGNOTEMPTY(td->td_siglist)) 1144 && nfs_sig_pending(tmpset)) { 1145 PROC_UNLOCK(p); 1146 return (EINTR); 1147 } 1148 PROC_UNLOCK(p); 1149 return (0); 1150 } 1151 1152 static int 1153 nfs_msg(struct thread *td, const char *server, const char *msg, int error) 1154 { 1155 struct proc *p; 1156 1157 p = td ? td->td_proc : NULL; 1158 if (error) { 1159 tprintf(p, LOG_INFO, "newnfs server %s: %s, error %d\n", 1160 server, msg, error); 1161 } else { 1162 tprintf(p, LOG_INFO, "newnfs server %s: %s\n", server, msg); 1163 } 1164 return (0); 1165 } 1166 1167 static void 1168 nfs_down(struct nfsmount *nmp, struct thread *td, const char *msg, 1169 int error, int flags) 1170 { 1171 if (nmp == NULL) 1172 return; 1173 mtx_lock(&nmp->nm_mtx); 1174 if ((flags & NFSSTA_TIMEO) && !(nmp->nm_state & NFSSTA_TIMEO)) { 1175 nmp->nm_state |= NFSSTA_TIMEO; 1176 mtx_unlock(&nmp->nm_mtx); 1177 vfs_event_signal(&nmp->nm_mountp->mnt_stat.f_fsid, 1178 VQ_NOTRESP, 0); 1179 } else 1180 mtx_unlock(&nmp->nm_mtx); 1181 mtx_lock(&nmp->nm_mtx); 1182 if ((flags & NFSSTA_LOCKTIMEO) && !(nmp->nm_state & NFSSTA_LOCKTIMEO)) { 1183 nmp->nm_state |= NFSSTA_LOCKTIMEO; 1184 mtx_unlock(&nmp->nm_mtx); 1185 vfs_event_signal(&nmp->nm_mountp->mnt_stat.f_fsid, 1186 VQ_NOTRESPLOCK, 0); 1187 } else 1188 mtx_unlock(&nmp->nm_mtx); 1189 nfs_msg(td, nmp->nm_mountp->mnt_stat.f_mntfromname, msg, error); 1190 } 1191 1192 static void 1193 nfs_up(struct nfsmount *nmp, struct thread *td, const char *msg, 1194 int flags, int tprintfmsg) 1195 { 1196 if (nmp == NULL) 1197 return; 1198 if (tprintfmsg) { 1199 nfs_msg(td, nmp->nm_mountp->mnt_stat.f_mntfromname, msg, 0); 1200 } 1201 1202 mtx_lock(&nmp->nm_mtx); 1203 if ((flags & NFSSTA_TIMEO) && (nmp->nm_state & NFSSTA_TIMEO)) { 1204 nmp->nm_state &= ~NFSSTA_TIMEO; 1205 mtx_unlock(&nmp->nm_mtx); 1206 vfs_event_signal(&nmp->nm_mountp->mnt_stat.f_fsid, 1207 VQ_NOTRESP, 1); 1208 } else 1209 mtx_unlock(&nmp->nm_mtx); 1210 1211 mtx_lock(&nmp->nm_mtx); 1212 if ((flags & NFSSTA_LOCKTIMEO) && (nmp->nm_state & NFSSTA_LOCKTIMEO)) { 1213 nmp->nm_state &= ~NFSSTA_LOCKTIMEO; 1214 mtx_unlock(&nmp->nm_mtx); 1215 vfs_event_signal(&nmp->nm_mountp->mnt_stat.f_fsid, 1216 VQ_NOTRESPLOCK, 1); 1217 } else 1218 mtx_unlock(&nmp->nm_mtx); 1219 } 1220 1221