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sys/fs/nfs/nfs_commonkrpc.c
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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: releng/11.0/sys/fs/nfs/nfs_commonkrpc.c 298310 2016-04-19 23:48:27Z pfg $"); 36 37 /* 38 * Socket operations for use by nfs 39 */ 40 41 #include "opt_kgssapi.h" 42 #include "opt_nfs.h" 43 44 #include <sys/param.h> 45 #include <sys/systm.h> 46 #include <sys/kernel.h> 47 #include <sys/limits.h> 48 #include <sys/lock.h> 49 #include <sys/malloc.h> 50 #include <sys/mbuf.h> 51 #include <sys/mount.h> 52 #include <sys/mutex.h> 53 #include <sys/proc.h> 54 #include <sys/signalvar.h> 55 #include <sys/syscallsubr.h> 56 #include <sys/sysctl.h> 57 #include <sys/syslog.h> 58 #include <sys/vnode.h> 59 60 #include <rpc/rpc.h> 61 #include <rpc/krpc.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; 105 106 SYSCTL_DECL(_vfs_nfs); 107 108 SYSCTL_INT(_vfs_nfs, OID_AUTO, bufpackets, CTLFLAG_RW, &nfs_bufpackets, 0, 109 "Buffer reservation size 2 < x < 64"); 110 SYSCTL_INT(_vfs_nfs, OID_AUTO, reconnects, CTLFLAG_RD, &nfs_reconnects, 0, 111 "Number of times the nfs client has had to reconnect"); 112 SYSCTL_INT(_vfs_nfs, OID_AUTO, nfs3_jukebox_delay, CTLFLAG_RW, &nfs3_jukebox_delay, 0, 113 "Number of seconds to delay a retry after receiving EJUKEBOX"); 114 SYSCTL_INT(_vfs_nfs, OID_AUTO, skip_wcc_data_onerr, CTLFLAG_RW, &nfs_skip_wcc_data_onerr, 0, 115 "Disable weak cache consistency checking when server returns an error"); 116 117 static void nfs_down(struct nfsmount *, struct thread *, const char *, 118 int, int); 119 static void nfs_up(struct nfsmount *, struct thread *, const char *, 120 int, int); 121 static int nfs_msg(struct thread *, const char *, const char *, int); 122 123 struct nfs_cached_auth { 124 int ca_refs; /* refcount, including 1 from the cache */ 125 uid_t ca_uid; /* uid that corresponds to this auth */ 126 AUTH *ca_auth; /* RPC auth handle */ 127 }; 128 129 static int nfsv2_procid[NFS_V3NPROCS] = { 130 NFSV2PROC_NULL, 131 NFSV2PROC_GETATTR, 132 NFSV2PROC_SETATTR, 133 NFSV2PROC_LOOKUP, 134 NFSV2PROC_NOOP, 135 NFSV2PROC_READLINK, 136 NFSV2PROC_READ, 137 NFSV2PROC_WRITE, 138 NFSV2PROC_CREATE, 139 NFSV2PROC_MKDIR, 140 NFSV2PROC_SYMLINK, 141 NFSV2PROC_CREATE, 142 NFSV2PROC_REMOVE, 143 NFSV2PROC_RMDIR, 144 NFSV2PROC_RENAME, 145 NFSV2PROC_LINK, 146 NFSV2PROC_READDIR, 147 NFSV2PROC_NOOP, 148 NFSV2PROC_STATFS, 149 NFSV2PROC_NOOP, 150 NFSV2PROC_NOOP, 151 NFSV2PROC_NOOP, 152 }; 153 154 /* 155 * Initialize sockets and congestion for a new NFS connection. 156 * We do not free the sockaddr if error. 157 */ 158 int 159 newnfs_connect(struct nfsmount *nmp, struct nfssockreq *nrp, 160 struct ucred *cred, NFSPROC_T *p, int callback_retry_mult) 161 { 162 int rcvreserve, sndreserve; 163 int pktscale; 164 struct sockaddr *saddr; 165 struct ucred *origcred; 166 CLIENT *client; 167 struct netconfig *nconf; 168 struct socket *so; 169 int one = 1, retries, error = 0; 170 struct thread *td = curthread; 171 SVCXPRT *xprt; 172 struct timeval timo; 173 174 /* 175 * We need to establish the socket using the credentials of 176 * the mountpoint. Some parts of this process (such as 177 * sobind() and soconnect()) will use the curent thread's 178 * credential instead of the socket credential. To work 179 * around this, temporarily change the current thread's 180 * credential to that of the mountpoint. 181 * 182 * XXX: It would be better to explicitly pass the correct 183 * credential to sobind() and soconnect(). 184 */ 185 origcred = td->td_ucred; 186 187 /* 188 * Use the credential in nr_cred, if not NULL. 189 */ 190 if (nrp->nr_cred != NULL) 191 td->td_ucred = nrp->nr_cred; 192 else 193 td->td_ucred = cred; 194 saddr = nrp->nr_nam; 195 196 if (saddr->sa_family == AF_INET) 197 if (nrp->nr_sotype == SOCK_DGRAM) 198 nconf = getnetconfigent("udp"); 199 else 200 nconf = getnetconfigent("tcp"); 201 else 202 if (nrp->nr_sotype == SOCK_DGRAM) 203 nconf = getnetconfigent("udp6"); 204 else 205 nconf = getnetconfigent("tcp6"); 206 207 pktscale = nfs_bufpackets; 208 if (pktscale < 2) 209 pktscale = 2; 210 if (pktscale > 64) 211 pktscale = 64; 212 /* 213 * soreserve() can fail if sb_max is too small, so shrink pktscale 214 * and try again if there is an error. 215 * Print a log message suggesting increasing sb_max. 216 * Creating a socket and doing this is necessary since, if the 217 * reservation sizes are too large and will make soreserve() fail, 218 * the connection will work until a large send is attempted and 219 * then it will loop in the krpc code. 220 */ 221 so = NULL; 222 saddr = NFSSOCKADDR(nrp->nr_nam, struct sockaddr *); 223 error = socreate(saddr->sa_family, &so, nrp->nr_sotype, 224 nrp->nr_soproto, td->td_ucred, td); 225 if (error) { 226 td->td_ucred = origcred; 227 goto out; 228 } 229 do { 230 if (error != 0 && pktscale > 2) 231 pktscale--; 232 if (nrp->nr_sotype == SOCK_DGRAM) { 233 if (nmp != NULL) { 234 sndreserve = (NFS_MAXDGRAMDATA + NFS_MAXPKTHDR) * 235 pktscale; 236 rcvreserve = (NFS_MAXDGRAMDATA + NFS_MAXPKTHDR) * 237 pktscale; 238 } else { 239 sndreserve = rcvreserve = 1024 * pktscale; 240 } 241 } else { 242 if (nrp->nr_sotype != SOCK_STREAM) 243 panic("nfscon sotype"); 244 if (nmp != NULL) { 245 sndreserve = (NFS_MAXBSIZE + NFS_MAXPKTHDR + 246 sizeof (u_int32_t)) * pktscale; 247 rcvreserve = (NFS_MAXBSIZE + NFS_MAXPKTHDR + 248 sizeof (u_int32_t)) * pktscale; 249 } else { 250 sndreserve = rcvreserve = 1024 * pktscale; 251 } 252 } 253 error = soreserve(so, sndreserve, rcvreserve); 254 } while (error != 0 && pktscale > 2); 255 soclose(so); 256 if (error) { 257 td->td_ucred = origcred; 258 goto out; 259 } 260 261 client = clnt_reconnect_create(nconf, saddr, nrp->nr_prog, 262 nrp->nr_vers, sndreserve, rcvreserve); 263 CLNT_CONTROL(client, CLSET_WAITCHAN, "nfsreq"); 264 if (nmp != NULL) { 265 if ((nmp->nm_flag & NFSMNT_INT)) 266 CLNT_CONTROL(client, CLSET_INTERRUPTIBLE, &one); 267 if ((nmp->nm_flag & NFSMNT_RESVPORT)) 268 CLNT_CONTROL(client, CLSET_PRIVPORT, &one); 269 if (NFSHASSOFT(nmp)) { 270 if (nmp->nm_sotype == SOCK_DGRAM) 271 /* 272 * For UDP, the large timeout for a reconnect 273 * will be set to "nm_retry * nm_timeo / 2", so 274 * we only want to do 2 reconnect timeout 275 * retries. 276 */ 277 retries = 2; 278 else 279 retries = nmp->nm_retry; 280 } else 281 retries = INT_MAX; 282 if (NFSHASNFSV4N(nmp)) { 283 /* 284 * Make sure the nfscbd_pool doesn't get destroyed 285 * while doing this. 286 */ 287 NFSD_LOCK(); 288 if (nfs_numnfscbd > 0) { 289 nfs_numnfscbd++; 290 NFSD_UNLOCK(); 291 xprt = svc_vc_create_backchannel(nfscbd_pool); 292 CLNT_CONTROL(client, CLSET_BACKCHANNEL, xprt); 293 NFSD_LOCK(); 294 nfs_numnfscbd--; 295 if (nfs_numnfscbd == 0) 296 wakeup(&nfs_numnfscbd); 297 } 298 NFSD_UNLOCK(); 299 } 300 } else { 301 /* 302 * Three cases: 303 * - Null RPC callback to client 304 * - Non-Null RPC callback to client, wait a little longer 305 * - upcalls to nfsuserd and gssd (clp == NULL) 306 */ 307 if (callback_retry_mult == 0) { 308 retries = NFSV4_UPCALLRETRY; 309 CLNT_CONTROL(client, CLSET_PRIVPORT, &one); 310 } else { 311 retries = NFSV4_CALLBACKRETRY * callback_retry_mult; 312 } 313 } 314 CLNT_CONTROL(client, CLSET_RETRIES, &retries); 315 316 if (nmp != NULL) { 317 /* 318 * For UDP, there are 2 timeouts: 319 * - CLSET_RETRY_TIMEOUT sets the initial timeout for the timer 320 * that does a retransmit of an RPC request using the same 321 * socket and xid. This is what you normally want to do, 322 * since NFS servers depend on "same xid" for their 323 * Duplicate Request Cache. 324 * - timeout specified in CLNT_CALL_MBUF(), which specifies when 325 * retransmits on the same socket should fail and a fresh 326 * socket created. Each of these timeouts counts as one 327 * CLSET_RETRIES as set above. 328 * Set the initial retransmit timeout for UDP. This timeout 329 * doesn't exist for TCP and the following call just fails, 330 * which is ok. 331 */ 332 timo.tv_sec = nmp->nm_timeo / NFS_HZ; 333 timo.tv_usec = (nmp->nm_timeo % NFS_HZ) * 1000000 / NFS_HZ; 334 CLNT_CONTROL(client, CLSET_RETRY_TIMEOUT, &timo); 335 } 336 337 mtx_lock(&nrp->nr_mtx); 338 if (nrp->nr_client != NULL) { 339 mtx_unlock(&nrp->nr_mtx); 340 /* 341 * Someone else already connected. 342 */ 343 CLNT_RELEASE(client); 344 } else { 345 nrp->nr_client = client; 346 /* 347 * Protocols that do not require connections may be optionally 348 * left unconnected for servers that reply from a port other 349 * than NFS_PORT. 350 */ 351 if (nmp == NULL || (nmp->nm_flag & NFSMNT_NOCONN) == 0) { 352 mtx_unlock(&nrp->nr_mtx); 353 CLNT_CONTROL(client, CLSET_CONNECT, &one); 354 } else 355 mtx_unlock(&nrp->nr_mtx); 356 } 357 358 359 /* Restore current thread's credentials. */ 360 td->td_ucred = origcred; 361 362 out: 363 NFSEXITCODE(error); 364 return (error); 365 } 366 367 /* 368 * NFS disconnect. Clean up and unlink. 369 */ 370 void 371 newnfs_disconnect(struct nfssockreq *nrp) 372 { 373 CLIENT *client; 374 375 mtx_lock(&nrp->nr_mtx); 376 if (nrp->nr_client != NULL) { 377 client = nrp->nr_client; 378 nrp->nr_client = NULL; 379 mtx_unlock(&nrp->nr_mtx); 380 rpc_gss_secpurge_call(client); 381 CLNT_CLOSE(client); 382 CLNT_RELEASE(client); 383 } else { 384 mtx_unlock(&nrp->nr_mtx); 385 } 386 } 387 388 static AUTH * 389 nfs_getauth(struct nfssockreq *nrp, int secflavour, char *clnt_principal, 390 char *srv_principal, gss_OID mech_oid, struct ucred *cred) 391 { 392 rpc_gss_service_t svc; 393 AUTH *auth; 394 395 switch (secflavour) { 396 case RPCSEC_GSS_KRB5: 397 case RPCSEC_GSS_KRB5I: 398 case RPCSEC_GSS_KRB5P: 399 if (!mech_oid) { 400 if (!rpc_gss_mech_to_oid_call("kerberosv5", &mech_oid)) 401 return (NULL); 402 } 403 if (secflavour == RPCSEC_GSS_KRB5) 404 svc = rpc_gss_svc_none; 405 else if (secflavour == RPCSEC_GSS_KRB5I) 406 svc = rpc_gss_svc_integrity; 407 else 408 svc = rpc_gss_svc_privacy; 409 410 if (clnt_principal == NULL) 411 auth = rpc_gss_secfind_call(nrp->nr_client, cred, 412 srv_principal, mech_oid, svc); 413 else { 414 auth = rpc_gss_seccreate_call(nrp->nr_client, cred, 415 clnt_principal, srv_principal, "kerberosv5", 416 svc, NULL, NULL, NULL); 417 return (auth); 418 } 419 if (auth != NULL) 420 return (auth); 421 /* fallthrough */ 422 case AUTH_SYS: 423 default: 424 return (authunix_create(cred)); 425 426 } 427 } 428 429 /* 430 * Callback from the RPC code to generate up/down notifications. 431 */ 432 433 struct nfs_feedback_arg { 434 struct nfsmount *nf_mount; 435 int nf_lastmsg; /* last tprintf */ 436 int nf_tprintfmsg; 437 struct thread *nf_td; 438 }; 439 440 static void 441 nfs_feedback(int type, int proc, void *arg) 442 { 443 struct nfs_feedback_arg *nf = (struct nfs_feedback_arg *) arg; 444 struct nfsmount *nmp = nf->nf_mount; 445 time_t now; 446 447 switch (type) { 448 case FEEDBACK_REXMIT2: 449 case FEEDBACK_RECONNECT: 450 now = NFSD_MONOSEC; 451 if (nf->nf_lastmsg + nmp->nm_tprintf_delay < now) { 452 nfs_down(nmp, nf->nf_td, 453 "not responding", 0, NFSSTA_TIMEO); 454 nf->nf_tprintfmsg = TRUE; 455 nf->nf_lastmsg = now; 456 } 457 break; 458 459 case FEEDBACK_OK: 460 nfs_up(nf->nf_mount, nf->nf_td, 461 "is alive again", NFSSTA_TIMEO, nf->nf_tprintfmsg); 462 break; 463 } 464 } 465 466 /* 467 * newnfs_request - goes something like this 468 * - does the rpc by calling the krpc layer 469 * - break down rpc header and return with nfs reply 470 * nb: always frees up nd_mreq mbuf list 471 */ 472 int 473 newnfs_request(struct nfsrv_descript *nd, struct nfsmount *nmp, 474 struct nfsclient *clp, struct nfssockreq *nrp, vnode_t vp, 475 struct thread *td, struct ucred *cred, u_int32_t prog, u_int32_t vers, 476 u_char *retsum, int toplevel, u_int64_t *xidp, struct nfsclsession *sep) 477 { 478 u_int32_t retseq, retval, *tl; 479 time_t waituntil; 480 int i = 0, j = 0, opcnt, set_sigset = 0, slot; 481 int trycnt, error = 0, usegssname = 0, secflavour = AUTH_SYS; 482 int freeslot, timeo; 483 u_int16_t procnum; 484 u_int trylater_delay = 1; 485 struct nfs_feedback_arg nf; 486 struct timeval timo; 487 AUTH *auth; 488 struct rpc_callextra ext; 489 enum clnt_stat stat; 490 struct nfsreq *rep = NULL; 491 char *srv_principal = NULL, *clnt_principal = NULL; 492 sigset_t oldset; 493 struct ucred *authcred; 494 495 if (xidp != NULL) 496 *xidp = 0; 497 /* Reject requests while attempting a forced unmount. */ 498 if (nmp != NULL && (nmp->nm_mountp->mnt_kern_flag & MNTK_UNMOUNTF)) { 499 m_freem(nd->nd_mreq); 500 return (ESTALE); 501 } 502 503 /* 504 * Set authcred, which is used to acquire RPC credentials to 505 * the cred argument, by default. The crhold() should not be 506 * necessary, but will ensure that some future code change 507 * doesn't result in the credential being free'd prematurely. 508 */ 509 authcred = crhold(cred); 510 511 /* For client side interruptible mounts, mask off the signals. */ 512 if (nmp != NULL && td != NULL && NFSHASINT(nmp)) { 513 newnfs_set_sigmask(td, &oldset); 514 set_sigset = 1; 515 } 516 517 /* 518 * XXX if not already connected call nfs_connect now. Longer 519 * term, change nfs_mount to call nfs_connect unconditionally 520 * and let clnt_reconnect_create handle reconnects. 521 */ 522 if (nrp->nr_client == NULL) 523 newnfs_connect(nmp, nrp, cred, td, 0); 524 525 /* 526 * For a client side mount, nmp is != NULL and clp == NULL. For 527 * server calls (callbacks or upcalls), nmp == NULL. 528 */ 529 if (clp != NULL) { 530 NFSLOCKSTATE(); 531 if ((clp->lc_flags & LCL_GSS) && nfsrv_gsscallbackson) { 532 secflavour = RPCSEC_GSS_KRB5; 533 if (nd->nd_procnum != NFSPROC_NULL) { 534 if (clp->lc_flags & LCL_GSSINTEGRITY) 535 secflavour = RPCSEC_GSS_KRB5I; 536 else if (clp->lc_flags & LCL_GSSPRIVACY) 537 secflavour = RPCSEC_GSS_KRB5P; 538 } 539 } 540 NFSUNLOCKSTATE(); 541 } else if (nmp != NULL && NFSHASKERB(nmp) && 542 nd->nd_procnum != NFSPROC_NULL) { 543 if (NFSHASALLGSSNAME(nmp) && nmp->nm_krbnamelen > 0) 544 nd->nd_flag |= ND_USEGSSNAME; 545 if ((nd->nd_flag & ND_USEGSSNAME) != 0) { 546 /* 547 * If there is a client side host based credential, 548 * use that, otherwise use the system uid, if set. 549 * The system uid is in the nmp->nm_sockreq.nr_cred 550 * credentials. 551 */ 552 if (nmp->nm_krbnamelen > 0) { 553 usegssname = 1; 554 clnt_principal = nmp->nm_krbname; 555 } else if (nmp->nm_uid != (uid_t)-1) { 556 KASSERT(nmp->nm_sockreq.nr_cred != NULL, 557 ("newnfs_request: NULL nr_cred")); 558 crfree(authcred); 559 authcred = crhold(nmp->nm_sockreq.nr_cred); 560 } 561 } else if (nmp->nm_krbnamelen == 0 && 562 nmp->nm_uid != (uid_t)-1 && cred->cr_uid == (uid_t)0) { 563 /* 564 * If there is no host based principal name and 565 * the system uid is set and this is root, use the 566 * system uid, since root won't have user 567 * credentials in a credentials cache file. 568 * The system uid is in the nmp->nm_sockreq.nr_cred 569 * credentials. 570 */ 571 KASSERT(nmp->nm_sockreq.nr_cred != NULL, 572 ("newnfs_request: NULL nr_cred")); 573 crfree(authcred); 574 authcred = crhold(nmp->nm_sockreq.nr_cred); 575 } 576 if (NFSHASINTEGRITY(nmp)) 577 secflavour = RPCSEC_GSS_KRB5I; 578 else if (NFSHASPRIVACY(nmp)) 579 secflavour = RPCSEC_GSS_KRB5P; 580 else 581 secflavour = RPCSEC_GSS_KRB5; 582 srv_principal = NFSMNT_SRVKRBNAME(nmp); 583 } else if (nmp != NULL && !NFSHASKERB(nmp) && 584 nd->nd_procnum != NFSPROC_NULL && 585 (nd->nd_flag & ND_USEGSSNAME) != 0) { 586 /* 587 * Use the uid that did the mount when the RPC is doing 588 * NFSv4 system operations, as indicated by the 589 * ND_USEGSSNAME flag, for the AUTH_SYS case. 590 * The credentials in nm_sockreq.nr_cred were used for the 591 * mount. 592 */ 593 KASSERT(nmp->nm_sockreq.nr_cred != NULL, 594 ("newnfs_request: NULL nr_cred")); 595 crfree(authcred); 596 authcred = crhold(nmp->nm_sockreq.nr_cred); 597 } 598 599 if (nmp != NULL) { 600 bzero(&nf, sizeof(struct nfs_feedback_arg)); 601 nf.nf_mount = nmp; 602 nf.nf_td = td; 603 nf.nf_lastmsg = NFSD_MONOSEC - 604 ((nmp->nm_tprintf_delay)-(nmp->nm_tprintf_initial_delay)); 605 } 606 607 if (nd->nd_procnum == NFSPROC_NULL) 608 auth = authnone_create(); 609 else if (usegssname) { 610 /* 611 * For this case, the authenticator is held in the 612 * nfssockreq structure, so don't release the reference count 613 * held on it. --> Don't AUTH_DESTROY() it in this function. 614 */ 615 if (nrp->nr_auth == NULL) 616 nrp->nr_auth = nfs_getauth(nrp, secflavour, 617 clnt_principal, srv_principal, NULL, authcred); 618 else 619 rpc_gss_refresh_auth_call(nrp->nr_auth); 620 auth = nrp->nr_auth; 621 } else 622 auth = nfs_getauth(nrp, secflavour, NULL, 623 srv_principal, NULL, authcred); 624 crfree(authcred); 625 if (auth == NULL) { 626 m_freem(nd->nd_mreq); 627 if (set_sigset) 628 newnfs_restore_sigmask(td, &oldset); 629 return (EACCES); 630 } 631 bzero(&ext, sizeof(ext)); 632 ext.rc_auth = auth; 633 if (nmp != NULL) { 634 ext.rc_feedback = nfs_feedback; 635 ext.rc_feedback_arg = &nf; 636 } 637 638 procnum = nd->nd_procnum; 639 if ((nd->nd_flag & ND_NFSV4) && 640 nd->nd_procnum != NFSPROC_NULL && 641 nd->nd_procnum != NFSV4PROC_CBCOMPOUND) 642 procnum = NFSV4PROC_COMPOUND; 643 644 if (nmp != NULL) { 645 NFSINCRGLOBAL(newnfsstats.rpcrequests); 646 647 /* Map the procnum to the old NFSv2 one, as required. */ 648 if ((nd->nd_flag & ND_NFSV2) != 0) { 649 if (nd->nd_procnum < NFS_V3NPROCS) 650 procnum = nfsv2_procid[nd->nd_procnum]; 651 else 652 procnum = NFSV2PROC_NOOP; 653 } 654 655 /* 656 * Now only used for the R_DONTRECOVER case, but until that is 657 * supported within the krpc code, I need to keep a queue of 658 * outstanding RPCs for nfsv4 client requests. 659 */ 660 if ((nd->nd_flag & ND_NFSV4) && procnum == NFSV4PROC_COMPOUND) 661 MALLOC(rep, struct nfsreq *, sizeof(struct nfsreq), 662 M_NFSDREQ, M_WAITOK); 663 #ifdef KDTRACE_HOOKS 664 if (dtrace_nfscl_nfs234_start_probe != NULL) { 665 uint32_t probe_id; 666 int probe_procnum; 667 668 if (nd->nd_flag & ND_NFSV4) { 669 probe_id = 670 nfscl_nfs4_start_probes[nd->nd_procnum]; 671 probe_procnum = nd->nd_procnum; 672 } else if (nd->nd_flag & ND_NFSV3) { 673 probe_id = nfscl_nfs3_start_probes[procnum]; 674 probe_procnum = procnum; 675 } else { 676 probe_id = 677 nfscl_nfs2_start_probes[nd->nd_procnum]; 678 probe_procnum = procnum; 679 } 680 if (probe_id != 0) 681 (dtrace_nfscl_nfs234_start_probe) 682 (probe_id, vp, nd->nd_mreq, cred, 683 probe_procnum); 684 } 685 #endif 686 } 687 trycnt = 0; 688 freeslot = -1; /* Set to slot that needs to be free'd */ 689 tryagain: 690 slot = -1; /* Slot that needs a sequence# increment. */ 691 /* 692 * This timeout specifies when a new socket should be created, 693 * along with new xid values. For UDP, this should be done 694 * infrequently, since retransmits of RPC requests should normally 695 * use the same xid. 696 */ 697 if (nmp == NULL) { 698 timo.tv_usec = 0; 699 if (clp == NULL) 700 timo.tv_sec = NFSV4_UPCALLTIMEO; 701 else 702 timo.tv_sec = NFSV4_CALLBACKTIMEO; 703 } else { 704 if (nrp->nr_sotype != SOCK_DGRAM) { 705 timo.tv_usec = 0; 706 if ((nmp->nm_flag & NFSMNT_NFSV4)) 707 timo.tv_sec = INT_MAX; 708 else 709 timo.tv_sec = NFS_TCPTIMEO; 710 } else { 711 if (NFSHASSOFT(nmp)) { 712 /* 713 * CLSET_RETRIES is set to 2, so this should be 714 * half of the total timeout required. 715 */ 716 timeo = nmp->nm_retry * nmp->nm_timeo / 2; 717 if (timeo < 1) 718 timeo = 1; 719 timo.tv_sec = timeo / NFS_HZ; 720 timo.tv_usec = (timeo % NFS_HZ) * 1000000 / 721 NFS_HZ; 722 } else { 723 /* For UDP hard mounts, use a large value. */ 724 timo.tv_sec = NFS_MAXTIMEO / NFS_HZ; 725 timo.tv_usec = 0; 726 } 727 } 728 729 if (rep != NULL) { 730 rep->r_flags = 0; 731 rep->r_nmp = nmp; 732 /* 733 * Chain request into list of outstanding requests. 734 */ 735 NFSLOCKREQ(); 736 TAILQ_INSERT_TAIL(&nfsd_reqq, rep, r_chain); 737 NFSUNLOCKREQ(); 738 } 739 } 740 741 nd->nd_mrep = NULL; 742 if (clp != NULL && sep != NULL) 743 stat = clnt_bck_call(nrp->nr_client, &ext, procnum, 744 nd->nd_mreq, &nd->nd_mrep, timo, sep->nfsess_xprt); 745 else 746 stat = CLNT_CALL_MBUF(nrp->nr_client, &ext, procnum, 747 nd->nd_mreq, &nd->nd_mrep, timo); 748 749 if (rep != NULL) { 750 /* 751 * RPC done, unlink the request. 752 */ 753 NFSLOCKREQ(); 754 TAILQ_REMOVE(&nfsd_reqq, rep, r_chain); 755 NFSUNLOCKREQ(); 756 } 757 758 /* 759 * If there was a successful reply and a tprintf msg. 760 * tprintf a response. 761 */ 762 if (stat == RPC_SUCCESS) { 763 error = 0; 764 } else if (stat == RPC_TIMEDOUT) { 765 NFSINCRGLOBAL(newnfsstats.rpctimeouts); 766 error = ETIMEDOUT; 767 } else if (stat == RPC_VERSMISMATCH) { 768 NFSINCRGLOBAL(newnfsstats.rpcinvalid); 769 error = EOPNOTSUPP; 770 } else if (stat == RPC_PROGVERSMISMATCH) { 771 NFSINCRGLOBAL(newnfsstats.rpcinvalid); 772 error = EPROTONOSUPPORT; 773 } else if (stat == RPC_INTR) { 774 error = EINTR; 775 } else { 776 NFSINCRGLOBAL(newnfsstats.rpcinvalid); 777 error = EACCES; 778 } 779 if (error) { 780 m_freem(nd->nd_mreq); 781 if (usegssname == 0) 782 AUTH_DESTROY(auth); 783 if (rep != NULL) 784 FREE((caddr_t)rep, M_NFSDREQ); 785 if (set_sigset) 786 newnfs_restore_sigmask(td, &oldset); 787 return (error); 788 } 789 790 KASSERT(nd->nd_mrep != NULL, ("mrep shouldn't be NULL if no error\n")); 791 792 /* 793 * Search for any mbufs that are not a multiple of 4 bytes long 794 * or with m_data not longword aligned. 795 * These could cause pointer alignment problems, so copy them to 796 * well aligned mbufs. 797 */ 798 newnfs_realign(&nd->nd_mrep, M_WAITOK); 799 nd->nd_md = nd->nd_mrep; 800 nd->nd_dpos = NFSMTOD(nd->nd_md, caddr_t); 801 nd->nd_repstat = 0; 802 if (nd->nd_procnum != NFSPROC_NULL && 803 nd->nd_procnum != NFSV4PROC_CBNULL) { 804 /* If sep == NULL, set it to the default in nmp. */ 805 if (sep == NULL && nmp != NULL) 806 sep = NFSMNT_MDSSESSION(nmp); 807 /* 808 * and now the actual NFS xdr. 809 */ 810 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 811 nd->nd_repstat = fxdr_unsigned(u_int32_t, *tl); 812 if (nd->nd_repstat >= 10000) 813 NFSCL_DEBUG(1, "proc=%d reps=%d\n", (int)nd->nd_procnum, 814 (int)nd->nd_repstat); 815 816 /* 817 * Get rid of the tag, return count and SEQUENCE result for 818 * NFSv4. 819 */ 820 if ((nd->nd_flag & ND_NFSV4) != 0) { 821 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 822 i = fxdr_unsigned(int, *tl); 823 error = nfsm_advance(nd, NFSM_RNDUP(i), -1); 824 if (error) 825 goto nfsmout; 826 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 827 opcnt = fxdr_unsigned(int, *tl++); 828 i = fxdr_unsigned(int, *tl++); 829 j = fxdr_unsigned(int, *tl); 830 if (j >= 10000) 831 NFSCL_DEBUG(1, "fop=%d fst=%d\n", i, j); 832 /* 833 * If the first op is Sequence, free up the slot. 834 */ 835 if ((nmp != NULL && i == NFSV4OP_SEQUENCE && j != 0) || 836 (clp != NULL && i == NFSV4OP_CBSEQUENCE && j != 0)) 837 NFSCL_DEBUG(1, "failed seq=%d\n", j); 838 if ((nmp != NULL && i == NFSV4OP_SEQUENCE && j == 0) || 839 (clp != NULL && i == NFSV4OP_CBSEQUENCE && j == 0) 840 ) { 841 if (i == NFSV4OP_SEQUENCE) 842 NFSM_DISSECT(tl, uint32_t *, 843 NFSX_V4SESSIONID + 844 5 * NFSX_UNSIGNED); 845 else 846 NFSM_DISSECT(tl, uint32_t *, 847 NFSX_V4SESSIONID + 848 4 * NFSX_UNSIGNED); 849 mtx_lock(&sep->nfsess_mtx); 850 tl += NFSX_V4SESSIONID / NFSX_UNSIGNED; 851 retseq = fxdr_unsigned(uint32_t, *tl++); 852 slot = fxdr_unsigned(int, *tl++); 853 freeslot = slot; 854 if (retseq != sep->nfsess_slotseq[slot]) 855 printf("retseq diff 0x%x\n", retseq); 856 retval = fxdr_unsigned(uint32_t, *++tl); 857 if ((retval + 1) < sep->nfsess_foreslots) 858 sep->nfsess_foreslots = (retval + 1); 859 else if ((retval + 1) > sep->nfsess_foreslots) 860 sep->nfsess_foreslots = (retval < 64) ? 861 (retval + 1) : 64; 862 mtx_unlock(&sep->nfsess_mtx); 863 864 /* Grab the op and status for the next one. */ 865 if (opcnt > 1) { 866 NFSM_DISSECT(tl, uint32_t *, 867 2 * NFSX_UNSIGNED); 868 i = fxdr_unsigned(int, *tl++); 869 j = fxdr_unsigned(int, *tl); 870 } 871 } 872 } 873 if (nd->nd_repstat != 0) { 874 if (((nd->nd_repstat == NFSERR_DELAY || 875 nd->nd_repstat == NFSERR_GRACE) && 876 (nd->nd_flag & ND_NFSV4) && 877 nd->nd_procnum != NFSPROC_DELEGRETURN && 878 nd->nd_procnum != NFSPROC_SETATTR && 879 nd->nd_procnum != NFSPROC_READ && 880 nd->nd_procnum != NFSPROC_READDS && 881 nd->nd_procnum != NFSPROC_WRITE && 882 nd->nd_procnum != NFSPROC_WRITEDS && 883 nd->nd_procnum != NFSPROC_OPEN && 884 nd->nd_procnum != NFSPROC_CREATE && 885 nd->nd_procnum != NFSPROC_OPENCONFIRM && 886 nd->nd_procnum != NFSPROC_OPENDOWNGRADE && 887 nd->nd_procnum != NFSPROC_CLOSE && 888 nd->nd_procnum != NFSPROC_LOCK && 889 nd->nd_procnum != NFSPROC_LOCKU) || 890 (nd->nd_repstat == NFSERR_DELAY && 891 (nd->nd_flag & ND_NFSV4) == 0) || 892 nd->nd_repstat == NFSERR_RESOURCE) { 893 if (trylater_delay > NFS_TRYLATERDEL) 894 trylater_delay = NFS_TRYLATERDEL; 895 waituntil = NFSD_MONOSEC + trylater_delay; 896 while (NFSD_MONOSEC < waituntil) 897 (void) nfs_catnap(PZERO, 0, "nfstry"); 898 trylater_delay *= 2; 899 if (slot != -1) { 900 mtx_lock(&sep->nfsess_mtx); 901 sep->nfsess_slotseq[slot]++; 902 *nd->nd_slotseq = txdr_unsigned( 903 sep->nfsess_slotseq[slot]); 904 mtx_unlock(&sep->nfsess_mtx); 905 } 906 m_freem(nd->nd_mrep); 907 nd->nd_mrep = NULL; 908 goto tryagain; 909 } 910 911 /* 912 * If the File Handle was stale, invalidate the 913 * lookup cache, just in case. 914 * (vp != NULL implies a client side call) 915 */ 916 if (nd->nd_repstat == ESTALE && vp != NULL) { 917 cache_purge(vp); 918 if (ncl_call_invalcaches != NULL) 919 (*ncl_call_invalcaches)(vp); 920 } 921 } 922 if ((nd->nd_flag & ND_NFSV4) != 0) { 923 /* Free the slot, as required. */ 924 if (freeslot != -1) 925 nfsv4_freeslot(sep, freeslot); 926 /* 927 * If this op is Putfh, throw its results away. 928 */ 929 if (j >= 10000) 930 NFSCL_DEBUG(1, "nop=%d nst=%d\n", i, j); 931 if (nmp != NULL && i == NFSV4OP_PUTFH && j == 0) { 932 NFSM_DISSECT(tl,u_int32_t *,2 * NFSX_UNSIGNED); 933 i = fxdr_unsigned(int, *tl++); 934 j = fxdr_unsigned(int, *tl); 935 if (j >= 10000) 936 NFSCL_DEBUG(1, "n2op=%d n2st=%d\n", i, 937 j); 938 /* 939 * All Compounds that do an Op that must 940 * be in sequence consist of NFSV4OP_PUTFH 941 * followed by one of these. As such, we 942 * can determine if the seqid# should be 943 * incremented, here. 944 */ 945 if ((i == NFSV4OP_OPEN || 946 i == NFSV4OP_OPENCONFIRM || 947 i == NFSV4OP_OPENDOWNGRADE || 948 i == NFSV4OP_CLOSE || 949 i == NFSV4OP_LOCK || 950 i == NFSV4OP_LOCKU) && 951 (j == 0 || 952 (j != NFSERR_STALECLIENTID && 953 j != NFSERR_STALESTATEID && 954 j != NFSERR_BADSTATEID && 955 j != NFSERR_BADSEQID && 956 j != NFSERR_BADXDR && 957 j != NFSERR_RESOURCE && 958 j != NFSERR_NOFILEHANDLE))) 959 nd->nd_flag |= ND_INCRSEQID; 960 } 961 /* 962 * If this op's status is non-zero, mark 963 * that there is no more data to process. 964 */ 965 if (j) 966 nd->nd_flag |= ND_NOMOREDATA; 967 968 /* 969 * If R_DONTRECOVER is set, replace the stale error 970 * reply, so that recovery isn't initiated. 971 */ 972 if ((nd->nd_repstat == NFSERR_STALECLIENTID || 973 nd->nd_repstat == NFSERR_BADSESSION || 974 nd->nd_repstat == NFSERR_STALESTATEID) && 975 rep != NULL && (rep->r_flags & R_DONTRECOVER)) 976 nd->nd_repstat = NFSERR_STALEDONTRECOVER; 977 } 978 } 979 980 #ifdef KDTRACE_HOOKS 981 if (nmp != NULL && dtrace_nfscl_nfs234_done_probe != NULL) { 982 uint32_t probe_id; 983 int probe_procnum; 984 985 if (nd->nd_flag & ND_NFSV4) { 986 probe_id = nfscl_nfs4_done_probes[nd->nd_procnum]; 987 probe_procnum = nd->nd_procnum; 988 } else if (nd->nd_flag & ND_NFSV3) { 989 probe_id = nfscl_nfs3_done_probes[procnum]; 990 probe_procnum = procnum; 991 } else { 992 probe_id = nfscl_nfs2_done_probes[nd->nd_procnum]; 993 probe_procnum = procnum; 994 } 995 if (probe_id != 0) 996 (dtrace_nfscl_nfs234_done_probe)(probe_id, vp, 997 nd->nd_mreq, cred, probe_procnum, 0); 998 } 999 #endif 1000 1001 m_freem(nd->nd_mreq); 1002 if (usegssname == 0) 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 (0); 1009 nfsmout: 1010 mbuf_freem(nd->nd_mrep); 1011 mbuf_freem(nd->nd_mreq); 1012 if (usegssname == 0) 1013 AUTH_DESTROY(auth); 1014 if (rep != NULL) 1015 FREE((caddr_t)rep, M_NFSDREQ); 1016 if (set_sigset) 1017 newnfs_restore_sigmask(td, &oldset); 1018 return (error); 1019 } 1020 1021 /* 1022 * Mark all of an nfs mount's outstanding requests with R_SOFTTERM and 1023 * wait for all requests to complete. This is used by forced unmounts 1024 * to terminate any outstanding RPCs. 1025 */ 1026 int 1027 newnfs_nmcancelreqs(struct nfsmount *nmp) 1028 { 1029 1030 if (nmp->nm_sockreq.nr_client != NULL) 1031 CLNT_CLOSE(nmp->nm_sockreq.nr_client); 1032 return (0); 1033 } 1034 1035 /* 1036 * Any signal that can interrupt an NFS operation in an intr mount 1037 * should be added to this set. SIGSTOP and SIGKILL cannot be masked. 1038 */ 1039 int newnfs_sig_set[] = { 1040 SIGINT, 1041 SIGTERM, 1042 SIGHUP, 1043 SIGKILL, 1044 SIGQUIT 1045 }; 1046 1047 /* 1048 * Check to see if one of the signals in our subset is pending on 1049 * the process (in an intr mount). 1050 */ 1051 static int 1052 nfs_sig_pending(sigset_t set) 1053 { 1054 int i; 1055 1056 for (i = 0 ; i < nitems(newnfs_sig_set); i++) 1057 if (SIGISMEMBER(set, newnfs_sig_set[i])) 1058 return (1); 1059 return (0); 1060 } 1061 1062 /* 1063 * The set/restore sigmask functions are used to (temporarily) overwrite 1064 * the thread td_sigmask during an RPC call (for example). These are also 1065 * used in other places in the NFS client that might tsleep(). 1066 */ 1067 void 1068 newnfs_set_sigmask(struct thread *td, sigset_t *oldset) 1069 { 1070 sigset_t newset; 1071 int i; 1072 struct proc *p; 1073 1074 SIGFILLSET(newset); 1075 if (td == NULL) 1076 td = curthread; /* XXX */ 1077 p = td->td_proc; 1078 /* Remove the NFS set of signals from newset */ 1079 PROC_LOCK(p); 1080 mtx_lock(&p->p_sigacts->ps_mtx); 1081 for (i = 0 ; i < nitems(newnfs_sig_set); i++) { 1082 /* 1083 * But make sure we leave the ones already masked 1084 * by the process, ie. remove the signal from the 1085 * temporary signalmask only if it wasn't already 1086 * in p_sigmask. 1087 */ 1088 if (!SIGISMEMBER(td->td_sigmask, newnfs_sig_set[i]) && 1089 !SIGISMEMBER(p->p_sigacts->ps_sigignore, newnfs_sig_set[i])) 1090 SIGDELSET(newset, newnfs_sig_set[i]); 1091 } 1092 mtx_unlock(&p->p_sigacts->ps_mtx); 1093 kern_sigprocmask(td, SIG_SETMASK, &newset, oldset, 1094 SIGPROCMASK_PROC_LOCKED); 1095 PROC_UNLOCK(p); 1096 } 1097 1098 void 1099 newnfs_restore_sigmask(struct thread *td, sigset_t *set) 1100 { 1101 if (td == NULL) 1102 td = curthread; /* XXX */ 1103 kern_sigprocmask(td, SIG_SETMASK, set, NULL, 0); 1104 } 1105 1106 /* 1107 * NFS wrapper to msleep(), that shoves a new p_sigmask and restores the 1108 * old one after msleep() returns. 1109 */ 1110 int 1111 newnfs_msleep(struct thread *td, void *ident, struct mtx *mtx, int priority, char *wmesg, int timo) 1112 { 1113 sigset_t oldset; 1114 int error; 1115 struct proc *p; 1116 1117 if ((priority & PCATCH) == 0) 1118 return msleep(ident, mtx, priority, wmesg, timo); 1119 if (td == NULL) 1120 td = curthread; /* XXX */ 1121 newnfs_set_sigmask(td, &oldset); 1122 error = msleep(ident, mtx, priority, wmesg, timo); 1123 newnfs_restore_sigmask(td, &oldset); 1124 p = td->td_proc; 1125 return (error); 1126 } 1127 1128 /* 1129 * Test for a termination condition pending on the process. 1130 * This is used for NFSMNT_INT mounts. 1131 */ 1132 int 1133 newnfs_sigintr(struct nfsmount *nmp, struct thread *td) 1134 { 1135 struct proc *p; 1136 sigset_t tmpset; 1137 1138 /* Terminate all requests while attempting a forced unmount. */ 1139 if (nmp->nm_mountp->mnt_kern_flag & MNTK_UNMOUNTF) 1140 return (EIO); 1141 if (!(nmp->nm_flag & NFSMNT_INT)) 1142 return (0); 1143 if (td == NULL) 1144 return (0); 1145 p = td->td_proc; 1146 PROC_LOCK(p); 1147 tmpset = p->p_siglist; 1148 SIGSETOR(tmpset, td->td_siglist); 1149 SIGSETNAND(tmpset, td->td_sigmask); 1150 mtx_lock(&p->p_sigacts->ps_mtx); 1151 SIGSETNAND(tmpset, p->p_sigacts->ps_sigignore); 1152 mtx_unlock(&p->p_sigacts->ps_mtx); 1153 if ((SIGNOTEMPTY(p->p_siglist) || SIGNOTEMPTY(td->td_siglist)) 1154 && nfs_sig_pending(tmpset)) { 1155 PROC_UNLOCK(p); 1156 return (EINTR); 1157 } 1158 PROC_UNLOCK(p); 1159 return (0); 1160 } 1161 1162 static int 1163 nfs_msg(struct thread *td, const char *server, const char *msg, int error) 1164 { 1165 struct proc *p; 1166 1167 p = td ? td->td_proc : NULL; 1168 if (error) { 1169 tprintf(p, LOG_INFO, "nfs server %s: %s, error %d\n", 1170 server, msg, error); 1171 } else { 1172 tprintf(p, LOG_INFO, "nfs server %s: %s\n", server, msg); 1173 } 1174 return (0); 1175 } 1176 1177 static void 1178 nfs_down(struct nfsmount *nmp, struct thread *td, const char *msg, 1179 int error, int flags) 1180 { 1181 if (nmp == NULL) 1182 return; 1183 mtx_lock(&nmp->nm_mtx); 1184 if ((flags & NFSSTA_TIMEO) && !(nmp->nm_state & NFSSTA_TIMEO)) { 1185 nmp->nm_state |= NFSSTA_TIMEO; 1186 mtx_unlock(&nmp->nm_mtx); 1187 vfs_event_signal(&nmp->nm_mountp->mnt_stat.f_fsid, 1188 VQ_NOTRESP, 0); 1189 } else 1190 mtx_unlock(&nmp->nm_mtx); 1191 mtx_lock(&nmp->nm_mtx); 1192 if ((flags & NFSSTA_LOCKTIMEO) && !(nmp->nm_state & NFSSTA_LOCKTIMEO)) { 1193 nmp->nm_state |= NFSSTA_LOCKTIMEO; 1194 mtx_unlock(&nmp->nm_mtx); 1195 vfs_event_signal(&nmp->nm_mountp->mnt_stat.f_fsid, 1196 VQ_NOTRESPLOCK, 0); 1197 } else 1198 mtx_unlock(&nmp->nm_mtx); 1199 nfs_msg(td, nmp->nm_mountp->mnt_stat.f_mntfromname, msg, error); 1200 } 1201 1202 static void 1203 nfs_up(struct nfsmount *nmp, struct thread *td, const char *msg, 1204 int flags, int tprintfmsg) 1205 { 1206 if (nmp == NULL) 1207 return; 1208 if (tprintfmsg) { 1209 nfs_msg(td, nmp->nm_mountp->mnt_stat.f_mntfromname, msg, 0); 1210 } 1211 1212 mtx_lock(&nmp->nm_mtx); 1213 if ((flags & NFSSTA_TIMEO) && (nmp->nm_state & NFSSTA_TIMEO)) { 1214 nmp->nm_state &= ~NFSSTA_TIMEO; 1215 mtx_unlock(&nmp->nm_mtx); 1216 vfs_event_signal(&nmp->nm_mountp->mnt_stat.f_fsid, 1217 VQ_NOTRESP, 1); 1218 } else 1219 mtx_unlock(&nmp->nm_mtx); 1220 1221 mtx_lock(&nmp->nm_mtx); 1222 if ((flags & NFSSTA_LOCKTIMEO) && (nmp->nm_state & NFSSTA_LOCKTIMEO)) { 1223 nmp->nm_state &= ~NFSSTA_LOCKTIMEO; 1224 mtx_unlock(&nmp->nm_mtx); 1225 vfs_event_signal(&nmp->nm_mountp->mnt_stat.f_fsid, 1226 VQ_NOTRESPLOCK, 1); 1227 } else 1228 mtx_unlock(&nmp->nm_mtx); 1229 } 1230
Cache object: ae11bf63fd3f05ecf8d14d6a661c69d1
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