nfs_socket.c revision 1.189.18.1
1 /* $NetBSD: nfs_socket.c,v 1.189.18.1 2013/08/28 15:21:49 rmind Exp $ */ 2 3 /* 4 * Copyright (c) 1989, 1991, 1993, 1995 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Rick Macklem at The University of Guelph. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * @(#)nfs_socket.c 8.5 (Berkeley) 3/30/95 35 */ 36 37 /* 38 * Socket operations for use by nfs 39 */ 40 41 #include <sys/cdefs.h> 42 __KERNEL_RCSID(0, "$NetBSD: nfs_socket.c,v 1.189.18.1 2013/08/28 15:21:49 rmind Exp $"); 43 44 #ifdef _KERNEL_OPT 45 #include "opt_nfs.h" 46 #include "opt_mbuftrace.h" 47 #endif 48 49 #include <sys/param.h> 50 #include <sys/systm.h> 51 #include <sys/evcnt.h> 52 #include <sys/callout.h> 53 #include <sys/proc.h> 54 #include <sys/mount.h> 55 #include <sys/kernel.h> 56 #include <sys/kmem.h> 57 #include <sys/mbuf.h> 58 #include <sys/vnode.h> 59 #include <sys/domain.h> 60 #include <sys/protosw.h> 61 #include <sys/socket.h> 62 #include <sys/socketvar.h> 63 #include <sys/syslog.h> 64 #include <sys/tprintf.h> 65 #include <sys/namei.h> 66 #include <sys/signal.h> 67 #include <sys/signalvar.h> 68 #include <sys/kauth.h> 69 70 #include <netinet/in.h> 71 #include <netinet/tcp.h> 72 73 #include <nfs/rpcv2.h> 74 #include <nfs/nfsproto.h> 75 #include <nfs/nfs.h> 76 #include <nfs/xdr_subs.h> 77 #include <nfs/nfsm_subs.h> 78 #include <nfs/nfsmount.h> 79 #include <nfs/nfsnode.h> 80 #include <nfs/nfsrtt.h> 81 #include <nfs/nfs_var.h> 82 83 #ifdef MBUFTRACE 84 struct mowner nfs_mowner = MOWNER_INIT("nfs",""); 85 #endif 86 87 /* 88 * Estimate rto for an nfs rpc sent via. an unreliable datagram. 89 * Use the mean and mean deviation of rtt for the appropriate type of rpc 90 * for the frequent rpcs and a default for the others. 91 * The justification for doing "other" this way is that these rpcs 92 * happen so infrequently that timer est. would probably be stale. 93 * Also, since many of these rpcs are 94 * non-idempotent, a conservative timeout is desired. 95 * getattr, lookup - A+2D 96 * read, write - A+4D 97 * other - nm_timeo 98 */ 99 #define NFS_RTO(n, t) \ 100 ((t) == 0 ? (n)->nm_timeo : \ 101 ((t) < 3 ? \ 102 (((((n)->nm_srtt[t-1] + 3) >> 2) + (n)->nm_sdrtt[t-1] + 1) >> 1) : \ 103 ((((n)->nm_srtt[t-1] + 7) >> 3) + (n)->nm_sdrtt[t-1] + 1))) 104 #define NFS_SRTT(r) (r)->r_nmp->nm_srtt[nfs_proct[(r)->r_procnum] - 1] 105 #define NFS_SDRTT(r) (r)->r_nmp->nm_sdrtt[nfs_proct[(r)->r_procnum] - 1] 106 107 /* 108 * Defines which timer to use for the procnum. 109 * 0 - default 110 * 1 - getattr 111 * 2 - lookup 112 * 3 - read 113 * 4 - write 114 */ 115 const int nfs_proct[NFS_NPROCS] = { 116 [NFSPROC_NULL] = 0, 117 [NFSPROC_GETATTR] = 1, 118 [NFSPROC_SETATTR] = 0, 119 [NFSPROC_LOOKUP] = 2, 120 [NFSPROC_ACCESS] = 1, 121 [NFSPROC_READLINK] = 3, 122 [NFSPROC_READ] = 3, 123 [NFSPROC_WRITE] = 4, 124 [NFSPROC_CREATE] = 0, 125 [NFSPROC_MKDIR] = 0, 126 [NFSPROC_SYMLINK] = 0, 127 [NFSPROC_MKNOD] = 0, 128 [NFSPROC_REMOVE] = 0, 129 [NFSPROC_RMDIR] = 0, 130 [NFSPROC_RENAME] = 0, 131 [NFSPROC_LINK] = 0, 132 [NFSPROC_READDIR] = 3, 133 [NFSPROC_READDIRPLUS] = 3, 134 [NFSPROC_FSSTAT] = 0, 135 [NFSPROC_FSINFO] = 0, 136 [NFSPROC_PATHCONF] = 0, 137 [NFSPROC_COMMIT] = 0, 138 [NFSPROC_NOOP] = 0, 139 }; 140 141 #ifdef DEBUG 142 /* 143 * Avoid spamming the console with debugging messages. We only print 144 * the nfs timer and reply error debugs every 10 seconds. 145 */ 146 const struct timeval nfs_err_interval = { 10, 0 }; 147 struct timeval nfs_reply_last_err_time; 148 struct timeval nfs_timer_last_err_time; 149 #endif 150 151 /* 152 * There is a congestion window for outstanding rpcs maintained per mount 153 * point. The cwnd size is adjusted in roughly the way that: 154 * Van Jacobson, Congestion avoidance and Control, In "Proceedings of 155 * SIGCOMM '88". ACM, August 1988. 156 * describes for TCP. The cwnd size is chopped in half on a retransmit timeout 157 * and incremented by 1/cwnd when each rpc reply is received and a full cwnd 158 * of rpcs is in progress. 159 * (The sent count and cwnd are scaled for integer arith.) 160 * Variants of "slow start" were tried and were found to be too much of a 161 * performance hit (ave. rtt 3 times larger), 162 * I suspect due to the large rtt that nfs rpcs have. 163 */ 164 int nfsrtton = 0; 165 struct nfsrtt nfsrtt; 166 static const int nfs_backoff[8] = { 2, 4, 8, 16, 32, 64, 128, 256, }; 167 struct nfsreqhead nfs_reqq; 168 static callout_t nfs_timer_ch; 169 static struct evcnt nfs_timer_ev; 170 static struct evcnt nfs_timer_start_ev; 171 static struct evcnt nfs_timer_stop_ev; 172 static kmutex_t nfs_timer_lock; 173 static bool (*nfs_timer_srvvec)(void); 174 175 /* 176 * Initialize sockets and congestion for a new NFS connection. 177 * We do not free the sockaddr if error. 178 */ 179 int 180 nfs_connect(struct nfsmount *nmp, struct nfsreq *rep, struct lwp *l) 181 { 182 struct socket *so; 183 int error, rcvreserve, sndreserve; 184 struct sockaddr *saddr; 185 struct sockaddr_in *sin; 186 struct sockaddr_in6 *sin6; 187 struct mbuf *m; 188 int val; 189 190 nmp->nm_so = NULL; 191 saddr = mtod(nmp->nm_nam, struct sockaddr *); 192 error = socreate(saddr->sa_family, &nmp->nm_so, 193 nmp->nm_sotype, nmp->nm_soproto, l, NULL); 194 if (error) 195 goto bad; 196 so = nmp->nm_so; 197 #ifdef MBUFTRACE 198 so->so_mowner = &nfs_mowner; 199 so->so_rcv.sb_mowner = &nfs_mowner; 200 so->so_snd.sb_mowner = &nfs_mowner; 201 #endif 202 nmp->nm_soflags = so->so_proto->pr_flags; 203 204 /* 205 * Some servers require that the client port be a reserved port number. 206 */ 207 if (saddr->sa_family == AF_INET && (nmp->nm_flag & NFSMNT_RESVPORT)) { 208 val = IP_PORTRANGE_LOW; 209 210 if ((error = so_setsockopt(NULL, so, IPPROTO_IP, IP_PORTRANGE, 211 &val, sizeof(val)))) 212 goto bad; 213 m = m_get(M_WAIT, MT_SONAME); 214 MCLAIM(m, so->so_mowner); 215 sin = mtod(m, struct sockaddr_in *); 216 sin->sin_len = m->m_len = sizeof (struct sockaddr_in); 217 sin->sin_family = AF_INET; 218 sin->sin_addr.s_addr = INADDR_ANY; 219 sin->sin_port = 0; 220 error = sobind(so, m, &lwp0); 221 m_freem(m); 222 if (error) 223 goto bad; 224 } 225 if (saddr->sa_family == AF_INET6 && (nmp->nm_flag & NFSMNT_RESVPORT)) { 226 val = IPV6_PORTRANGE_LOW; 227 228 if ((error = so_setsockopt(NULL, so, IPPROTO_IPV6, 229 IPV6_PORTRANGE, &val, sizeof(val)))) 230 goto bad; 231 m = m_get(M_WAIT, MT_SONAME); 232 MCLAIM(m, so->so_mowner); 233 sin6 = mtod(m, struct sockaddr_in6 *); 234 memset(sin6, 0, sizeof(*sin6)); 235 sin6->sin6_len = m->m_len = sizeof (struct sockaddr_in6); 236 sin6->sin6_family = AF_INET6; 237 error = sobind(so, m, &lwp0); 238 m_freem(m); 239 if (error) 240 goto bad; 241 } 242 243 /* 244 * Protocols that do not require connections may be optionally left 245 * unconnected for servers that reply from a port other than NFS_PORT. 246 */ 247 solock(so); 248 if (nmp->nm_flag & NFSMNT_NOCONN) { 249 if (nmp->nm_soflags & PR_CONNREQUIRED) { 250 sounlock(so); 251 error = ENOTCONN; 252 goto bad; 253 } 254 } else { 255 error = soconnect(so, nmp->nm_nam, l); 256 if (error) { 257 sounlock(so); 258 goto bad; 259 } 260 261 /* 262 * Wait for the connection to complete. Cribbed from the 263 * connect system call but with the wait timing out so 264 * that interruptible mounts don't hang here for a long time. 265 */ 266 while ((so->so_state & SS_ISCONNECTING) && so->so_error == 0) { 267 (void)sowait(so, false, 2 * hz); 268 if ((so->so_state & SS_ISCONNECTING) && 269 so->so_error == 0 && rep && 270 (error = nfs_sigintr(nmp, rep, rep->r_lwp)) != 0){ 271 so->so_state &= ~SS_ISCONNECTING; 272 sounlock(so); 273 goto bad; 274 } 275 } 276 if (so->so_error) { 277 error = so->so_error; 278 so->so_error = 0; 279 sounlock(so); 280 goto bad; 281 } 282 } 283 if (nmp->nm_flag & (NFSMNT_SOFT | NFSMNT_INT)) { 284 so->so_rcv.sb_timeo = (5 * hz); 285 so->so_snd.sb_timeo = (5 * hz); 286 } else { 287 /* 288 * enable receive timeout to detect server crash and reconnect. 289 * otherwise, we can be stuck in soreceive forever. 290 */ 291 so->so_rcv.sb_timeo = (5 * hz); 292 so->so_snd.sb_timeo = 0; 293 } 294 if (nmp->nm_sotype == SOCK_DGRAM) { 295 sndreserve = (nmp->nm_wsize + NFS_MAXPKTHDR) * 3; 296 rcvreserve = (max(nmp->nm_rsize, nmp->nm_readdirsize) + 297 NFS_MAXPKTHDR) * 2; 298 } else if (nmp->nm_sotype == SOCK_SEQPACKET) { 299 sndreserve = (nmp->nm_wsize + NFS_MAXPKTHDR) * 3; 300 rcvreserve = (max(nmp->nm_rsize, nmp->nm_readdirsize) + 301 NFS_MAXPKTHDR) * 3; 302 } else { 303 sounlock(so); 304 if (nmp->nm_sotype != SOCK_STREAM) 305 panic("nfscon sotype"); 306 if (so->so_proto->pr_flags & PR_CONNREQUIRED) { 307 val = 1; 308 so_setsockopt(NULL, so, SOL_SOCKET, SO_KEEPALIVE, &val, 309 sizeof(val)); 310 } 311 if (so->so_proto->pr_protocol == IPPROTO_TCP) { 312 val = 1; 313 so_setsockopt(NULL, so, IPPROTO_TCP, TCP_NODELAY, &val, 314 sizeof(val)); 315 } 316 sndreserve = (nmp->nm_wsize + NFS_MAXPKTHDR + 317 sizeof (u_int32_t)) * 3; 318 rcvreserve = (nmp->nm_rsize + NFS_MAXPKTHDR + 319 sizeof (u_int32_t)) * 3; 320 solock(so); 321 } 322 error = soreserve(so, sndreserve, rcvreserve); 323 if (error) { 324 sounlock(so); 325 goto bad; 326 } 327 so->so_rcv.sb_flags |= SB_NOINTR; 328 so->so_snd.sb_flags |= SB_NOINTR; 329 sounlock(so); 330 331 /* Initialize other non-zero congestion variables */ 332 nmp->nm_srtt[0] = nmp->nm_srtt[1] = nmp->nm_srtt[2] = nmp->nm_srtt[3] = 333 NFS_TIMEO << 3; 334 nmp->nm_sdrtt[0] = nmp->nm_sdrtt[1] = nmp->nm_sdrtt[2] = 335 nmp->nm_sdrtt[3] = 0; 336 nmp->nm_cwnd = NFS_MAXCWND / 2; /* Initial send window */ 337 nmp->nm_sent = 0; 338 nmp->nm_timeouts = 0; 339 return (0); 340 341 bad: 342 nfs_disconnect(nmp); 343 return (error); 344 } 345 346 /* 347 * Reconnect routine: 348 * Called when a connection is broken on a reliable protocol. 349 * - clean up the old socket 350 * - nfs_connect() again 351 * - set R_MUSTRESEND for all outstanding requests on mount point 352 * If this fails the mount point is DEAD! 353 * nb: Must be called with the nfs_sndlock() set on the mount point. 354 */ 355 int 356 nfs_reconnect(struct nfsreq *rep) 357 { 358 struct nfsreq *rp; 359 struct nfsmount *nmp = rep->r_nmp; 360 int error; 361 362 nfs_disconnect(nmp); 363 while ((error = nfs_connect(nmp, rep, &lwp0)) != 0) { 364 if (error == EINTR || error == ERESTART) 365 return (EINTR); 366 kpause("nfscn2", false, hz, NULL); 367 } 368 369 /* 370 * Loop through outstanding request list and fix up all requests 371 * on old socket. 372 */ 373 TAILQ_FOREACH(rp, &nfs_reqq, r_chain) { 374 if (rp->r_nmp == nmp) { 375 if ((rp->r_flags & R_MUSTRESEND) == 0) 376 rp->r_flags |= R_MUSTRESEND | R_REXMITTED; 377 rp->r_rexmit = 0; 378 } 379 } 380 return (0); 381 } 382 383 /* 384 * NFS disconnect. Clean up and unlink. 385 */ 386 void 387 nfs_disconnect(struct nfsmount *nmp) 388 { 389 struct socket *so; 390 int drain = 0; 391 392 if (nmp->nm_so) { 393 so = nmp->nm_so; 394 nmp->nm_so = NULL; 395 solock(so); 396 soshutdown(so, SHUT_RDWR); 397 sounlock(so); 398 drain = (nmp->nm_iflag & NFSMNT_DISMNT) != 0; 399 if (drain) { 400 /* 401 * soshutdown() above should wake up the current 402 * listener. 403 * Now wake up those waiting for the receive lock, and 404 * wait for them to go away unhappy, to prevent *nmp 405 * from evaporating while they're sleeping. 406 */ 407 mutex_enter(&nmp->nm_lock); 408 while (nmp->nm_waiters > 0) { 409 cv_broadcast(&nmp->nm_rcvcv); 410 cv_broadcast(&nmp->nm_sndcv); 411 cv_wait(&nmp->nm_disconcv, &nmp->nm_lock); 412 } 413 mutex_exit(&nmp->nm_lock); 414 } 415 soclose(so); 416 } 417 #ifdef DIAGNOSTIC 418 if (drain && (nmp->nm_waiters > 0)) 419 panic("nfs_disconnect: waiters left after drain?"); 420 #endif 421 } 422 423 void 424 nfs_safedisconnect(struct nfsmount *nmp) 425 { 426 struct nfsreq dummyreq; 427 428 memset(&dummyreq, 0, sizeof(dummyreq)); 429 dummyreq.r_nmp = nmp; 430 nfs_rcvlock(nmp, &dummyreq); /* XXX ignored error return */ 431 nfs_disconnect(nmp); 432 nfs_rcvunlock(nmp); 433 } 434 435 /* 436 * This is the nfs send routine. For connection based socket types, it 437 * must be called with an nfs_sndlock() on the socket. 438 * "rep == NULL" indicates that it has been called from a server. 439 * For the client side: 440 * - return EINTR if the RPC is terminated, 0 otherwise 441 * - set R_MUSTRESEND if the send fails for any reason 442 * - do any cleanup required by recoverable socket errors (? ? ?) 443 * For the server side: 444 * - return EINTR or ERESTART if interrupted by a signal 445 * - return EPIPE if a connection is lost for connection based sockets (TCP...) 446 * - do any cleanup required by recoverable socket errors (? ? ?) 447 */ 448 int 449 nfs_send(struct socket *so, struct mbuf *nam, struct mbuf *top, struct nfsreq *rep, struct lwp *l) 450 { 451 struct mbuf *sendnam; 452 int error, soflags, flags; 453 454 /* XXX nfs_doio()/nfs_request() calls with rep->r_lwp == NULL */ 455 if (l == NULL && rep->r_lwp == NULL) 456 l = curlwp; 457 458 if (rep) { 459 if (rep->r_flags & R_SOFTTERM) { 460 m_freem(top); 461 return (EINTR); 462 } 463 if ((so = rep->r_nmp->nm_so) == NULL) { 464 rep->r_flags |= R_MUSTRESEND; 465 m_freem(top); 466 return (0); 467 } 468 rep->r_flags &= ~R_MUSTRESEND; 469 soflags = rep->r_nmp->nm_soflags; 470 } else 471 soflags = so->so_proto->pr_flags; 472 if ((soflags & PR_CONNREQUIRED) || (so->so_state & SS_ISCONNECTED)) 473 sendnam = NULL; 474 else 475 sendnam = nam; 476 if (so->so_type == SOCK_SEQPACKET) 477 flags = MSG_EOR; 478 else 479 flags = 0; 480 481 error = (*so->so_send)(so, sendnam, NULL, top, NULL, flags, l); 482 if (error) { 483 if (rep) { 484 if (error == ENOBUFS && so->so_type == SOCK_DGRAM) { 485 /* 486 * We're too fast for the network/driver, 487 * and UDP isn't flowcontrolled. 488 * We need to resend. This is not fatal, 489 * just try again. 490 * 491 * Could be smarter here by doing some sort 492 * of a backoff, but this is rare. 493 */ 494 rep->r_flags |= R_MUSTRESEND; 495 } else { 496 if (error != EPIPE) 497 log(LOG_INFO, 498 "nfs send error %d for %s\n", 499 error, 500 rep->r_nmp->nm_mountp-> 501 mnt_stat.f_mntfromname); 502 /* 503 * Deal with errors for the client side. 504 */ 505 if (rep->r_flags & R_SOFTTERM) 506 error = EINTR; 507 else if (error != EMSGSIZE) 508 rep->r_flags |= R_MUSTRESEND; 509 } 510 } else { 511 /* 512 * See above. This error can happen under normal 513 * circumstances and the log is too noisy. 514 * The error will still show up in nfsstat. 515 */ 516 if (error != ENOBUFS || so->so_type != SOCK_DGRAM) 517 log(LOG_INFO, "nfsd send error %d\n", error); 518 } 519 520 /* 521 * Handle any recoverable (soft) socket errors here. (? ? ?) 522 */ 523 if (error != EINTR && error != ERESTART && 524 error != EWOULDBLOCK && error != EPIPE && 525 error != EMSGSIZE) 526 error = 0; 527 } 528 return (error); 529 } 530 531 /* 532 * Generate the rpc reply header 533 * siz arg. is used to decide if adding a cluster is worthwhile 534 */ 535 int 536 nfs_rephead(int siz, struct nfsrv_descript *nd, struct nfssvc_sock *slp, int err, int cache, u_quad_t *frev, struct mbuf **mrq, struct mbuf **mbp, char **bposp) 537 { 538 u_int32_t *tl; 539 struct mbuf *mreq; 540 char *bpos; 541 struct mbuf *mb; 542 543 mreq = m_gethdr(M_WAIT, MT_DATA); 544 MCLAIM(mreq, &nfs_mowner); 545 mb = mreq; 546 /* 547 * If this is a big reply, use a cluster else 548 * try and leave leading space for the lower level headers. 549 */ 550 siz += RPC_REPLYSIZ; 551 if (siz >= max_datalen) { 552 m_clget(mreq, M_WAIT); 553 } else 554 mreq->m_data += max_hdr; 555 tl = mtod(mreq, u_int32_t *); 556 mreq->m_len = 6 * NFSX_UNSIGNED; 557 bpos = ((char *)tl) + mreq->m_len; 558 *tl++ = txdr_unsigned(nd->nd_retxid); 559 *tl++ = rpc_reply; 560 if (err == ERPCMISMATCH || (err & NFSERR_AUTHERR)) { 561 *tl++ = rpc_msgdenied; 562 if (err & NFSERR_AUTHERR) { 563 *tl++ = rpc_autherr; 564 *tl = txdr_unsigned(err & ~NFSERR_AUTHERR); 565 mreq->m_len -= NFSX_UNSIGNED; 566 bpos -= NFSX_UNSIGNED; 567 } else { 568 *tl++ = rpc_mismatch; 569 *tl++ = txdr_unsigned(RPC_VER2); 570 *tl = txdr_unsigned(RPC_VER2); 571 } 572 } else { 573 *tl++ = rpc_msgaccepted; 574 575 /* 576 * For Kerberos authentication, we must send the nickname 577 * verifier back, otherwise just RPCAUTH_NULL. 578 */ 579 if (nd->nd_flag & ND_KERBFULL) { 580 struct nfsuid *nuidp; 581 struct timeval ktvin, ktvout; 582 583 memset(&ktvout, 0, sizeof ktvout); /* XXX gcc */ 584 585 LIST_FOREACH(nuidp, 586 NUIDHASH(slp, kauth_cred_geteuid(nd->nd_cr)), 587 nu_hash) { 588 if (kauth_cred_geteuid(nuidp->nu_cr) == 589 kauth_cred_geteuid(nd->nd_cr) && 590 (!nd->nd_nam2 || netaddr_match( 591 NU_NETFAM(nuidp), &nuidp->nu_haddr, 592 nd->nd_nam2))) 593 break; 594 } 595 if (nuidp) { 596 ktvin.tv_sec = 597 txdr_unsigned(nuidp->nu_timestamp.tv_sec 598 - 1); 599 ktvin.tv_usec = 600 txdr_unsigned(nuidp->nu_timestamp.tv_usec); 601 602 /* 603 * Encrypt the timestamp in ecb mode using the 604 * session key. 605 */ 606 #ifdef NFSKERB 607 XXX 608 #endif 609 610 *tl++ = rpc_auth_kerb; 611 *tl++ = txdr_unsigned(3 * NFSX_UNSIGNED); 612 *tl = ktvout.tv_sec; 613 nfsm_build(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 614 *tl++ = ktvout.tv_usec; 615 *tl++ = txdr_unsigned( 616 kauth_cred_geteuid(nuidp->nu_cr)); 617 } else { 618 *tl++ = 0; 619 *tl++ = 0; 620 } 621 } else { 622 *tl++ = 0; 623 *tl++ = 0; 624 } 625 switch (err) { 626 case EPROGUNAVAIL: 627 *tl = txdr_unsigned(RPC_PROGUNAVAIL); 628 break; 629 case EPROGMISMATCH: 630 *tl = txdr_unsigned(RPC_PROGMISMATCH); 631 nfsm_build(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 632 *tl++ = txdr_unsigned(2); 633 *tl = txdr_unsigned(3); 634 break; 635 case EPROCUNAVAIL: 636 *tl = txdr_unsigned(RPC_PROCUNAVAIL); 637 break; 638 case EBADRPC: 639 *tl = txdr_unsigned(RPC_GARBAGE); 640 break; 641 default: 642 *tl = 0; 643 if (err != NFSERR_RETVOID) { 644 nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED); 645 if (err) 646 *tl = txdr_unsigned(nfsrv_errmap(nd, err)); 647 else 648 *tl = 0; 649 } 650 break; 651 }; 652 } 653 654 if (mrq != NULL) 655 *mrq = mreq; 656 *mbp = mb; 657 *bposp = bpos; 658 if (err != 0 && err != NFSERR_RETVOID) 659 nfsstats.srvrpc_errs++; 660 return (0); 661 } 662 663 static void 664 nfs_timer_schedule(void) 665 { 666 667 callout_schedule(&nfs_timer_ch, nfs_ticks); 668 } 669 670 void 671 nfs_timer_start(void) 672 { 673 674 if (callout_pending(&nfs_timer_ch)) 675 return; 676 677 nfs_timer_start_ev.ev_count++; 678 nfs_timer_schedule(); 679 } 680 681 void 682 nfs_timer_init(void) 683 { 684 685 mutex_init(&nfs_timer_lock, MUTEX_DEFAULT, IPL_NONE); 686 callout_init(&nfs_timer_ch, 0); 687 callout_setfunc(&nfs_timer_ch, nfs_timer, NULL); 688 evcnt_attach_dynamic(&nfs_timer_ev, EVCNT_TYPE_MISC, NULL, 689 "nfs", "timer"); 690 evcnt_attach_dynamic(&nfs_timer_start_ev, EVCNT_TYPE_MISC, NULL, 691 "nfs", "timer start"); 692 evcnt_attach_dynamic(&nfs_timer_stop_ev, EVCNT_TYPE_MISC, NULL, 693 "nfs", "timer stop"); 694 } 695 696 void 697 nfs_timer_fini(void) 698 { 699 700 callout_halt(&nfs_timer_ch, NULL); 701 callout_destroy(&nfs_timer_ch); 702 mutex_destroy(&nfs_timer_lock); 703 evcnt_detach(&nfs_timer_ev); 704 evcnt_detach(&nfs_timer_start_ev); 705 evcnt_detach(&nfs_timer_stop_ev); 706 } 707 708 void 709 nfs_timer_srvinit(bool (*func)(void)) 710 { 711 712 nfs_timer_srvvec = func; 713 } 714 715 void 716 nfs_timer_srvfini(void) 717 { 718 719 mutex_enter(&nfs_timer_lock); 720 nfs_timer_srvvec = NULL; 721 mutex_exit(&nfs_timer_lock); 722 } 723 724 725 /* 726 * Nfs timer routine 727 * Scan the nfsreq list and retranmit any requests that have timed out 728 * To avoid retransmission attempts on STREAM sockets (in the future) make 729 * sure to set the r_retry field to 0 (implies nm_retry == 0). 730 */ 731 void 732 nfs_timer(void *arg) 733 { 734 struct nfsreq *rep; 735 struct mbuf *m; 736 struct socket *so; 737 struct nfsmount *nmp; 738 int timeo; 739 int error; 740 bool more = false; 741 742 nfs_timer_ev.ev_count++; 743 744 mutex_enter(softnet_lock); /* XXX PR 40491 */ 745 TAILQ_FOREACH(rep, &nfs_reqq, r_chain) { 746 more = true; 747 nmp = rep->r_nmp; 748 if (rep->r_mrep || (rep->r_flags & R_SOFTTERM)) 749 continue; 750 if (nfs_sigintr(nmp, rep, rep->r_lwp)) { 751 rep->r_flags |= R_SOFTTERM; 752 continue; 753 } 754 if (rep->r_rtt >= 0) { 755 rep->r_rtt++; 756 if (nmp->nm_flag & NFSMNT_DUMBTIMR) 757 timeo = nmp->nm_timeo; 758 else 759 timeo = NFS_RTO(nmp, nfs_proct[rep->r_procnum]); 760 if (nmp->nm_timeouts > 0) 761 timeo *= nfs_backoff[nmp->nm_timeouts - 1]; 762 if (timeo > NFS_MAXTIMEO) 763 timeo = NFS_MAXTIMEO; 764 if (rep->r_rtt <= timeo) 765 continue; 766 if (nmp->nm_timeouts < 767 (sizeof(nfs_backoff) / sizeof(nfs_backoff[0]))) 768 nmp->nm_timeouts++; 769 } 770 /* 771 * Check for server not responding 772 */ 773 if ((rep->r_flags & R_TPRINTFMSG) == 0 && 774 rep->r_rexmit > nmp->nm_deadthresh) { 775 nfs_msg(rep->r_lwp, 776 nmp->nm_mountp->mnt_stat.f_mntfromname, 777 "not responding"); 778 rep->r_flags |= R_TPRINTFMSG; 779 } 780 if (rep->r_rexmit >= rep->r_retry) { /* too many */ 781 nfsstats.rpctimeouts++; 782 rep->r_flags |= R_SOFTTERM; 783 continue; 784 } 785 if (nmp->nm_sotype != SOCK_DGRAM) { 786 if (++rep->r_rexmit > NFS_MAXREXMIT) 787 rep->r_rexmit = NFS_MAXREXMIT; 788 continue; 789 } 790 if ((so = nmp->nm_so) == NULL) 791 continue; 792 793 /* 794 * If there is enough space and the window allows.. 795 * Resend it 796 * Set r_rtt to -1 in case we fail to send it now. 797 */ 798 /* solock(so); XXX PR 40491 */ 799 rep->r_rtt = -1; 800 if (sbspace(&so->so_snd) >= rep->r_mreq->m_pkthdr.len && 801 ((nmp->nm_flag & NFSMNT_DUMBTIMR) || 802 (rep->r_flags & R_SENT) || 803 nmp->nm_sent < nmp->nm_cwnd) && 804 (m = m_copym(rep->r_mreq, 0, M_COPYALL, M_DONTWAIT))){ 805 if (so->so_state & SS_ISCONNECTED) 806 error = (*so->so_proto->pr_usrreqs->pr_generic)(so, 807 PRU_SEND, m, NULL, NULL, NULL); 808 else 809 error = (*so->so_proto->pr_usrreqs->pr_generic)(so, 810 PRU_SEND, m, nmp->nm_nam, NULL, NULL); 811 if (error) { 812 if (NFSIGNORE_SOERROR(nmp->nm_soflags, error)) { 813 #ifdef DEBUG 814 if (ratecheck(&nfs_timer_last_err_time, 815 &nfs_err_interval)) 816 printf("%s: ignoring error " 817 "%d\n", __func__, error); 818 #endif 819 so->so_error = 0; 820 } 821 } else { 822 /* 823 * Iff first send, start timing 824 * else turn timing off, backoff timer 825 * and divide congestion window by 2. 826 */ 827 if (rep->r_flags & R_SENT) { 828 rep->r_flags &= ~R_TIMING; 829 if (++rep->r_rexmit > NFS_MAXREXMIT) 830 rep->r_rexmit = NFS_MAXREXMIT; 831 nmp->nm_cwnd >>= 1; 832 if (nmp->nm_cwnd < NFS_CWNDSCALE) 833 nmp->nm_cwnd = NFS_CWNDSCALE; 834 nfsstats.rpcretries++; 835 } else { 836 rep->r_flags |= R_SENT; 837 nmp->nm_sent += NFS_CWNDSCALE; 838 } 839 rep->r_rtt = 0; 840 } 841 } 842 /* sounlock(so); XXX PR 40491 */ 843 } 844 mutex_exit(softnet_lock); /* XXX PR 40491 */ 845 846 mutex_enter(&nfs_timer_lock); 847 if (nfs_timer_srvvec != NULL) { 848 more |= (*nfs_timer_srvvec)(); 849 } 850 mutex_exit(&nfs_timer_lock); 851 852 if (more) { 853 nfs_timer_schedule(); 854 } else { 855 nfs_timer_stop_ev.ev_count++; 856 } 857 } 858 859 /* 860 * Test for a termination condition pending on the process. 861 * This is used for NFSMNT_INT mounts. 862 */ 863 int 864 nfs_sigintr(struct nfsmount *nmp, struct nfsreq *rep, struct lwp *l) 865 { 866 sigset_t ss; 867 868 if (rep && (rep->r_flags & R_SOFTTERM)) 869 return (EINTR); 870 if (!(nmp->nm_flag & NFSMNT_INT)) 871 return (0); 872 if (l) { 873 sigpending1(l, &ss); 874 #if 0 875 sigminusset(&l->l_proc->p_sigctx.ps_sigignore, &ss); 876 #endif 877 if (sigismember(&ss, SIGINT) || sigismember(&ss, SIGTERM) || 878 sigismember(&ss, SIGKILL) || sigismember(&ss, SIGHUP) || 879 sigismember(&ss, SIGQUIT)) 880 return (EINTR); 881 } 882 return (0); 883 } 884 885 int 886 nfs_rcvlock(struct nfsmount *nmp, struct nfsreq *rep) 887 { 888 int *flagp = &nmp->nm_iflag; 889 int slptimeo = 0; 890 bool catch; 891 int error = 0; 892 893 KASSERT(nmp == rep->r_nmp); 894 895 catch = (nmp->nm_flag & NFSMNT_INT) != 0; 896 mutex_enter(&nmp->nm_lock); 897 while (/* CONSTCOND */ true) { 898 if (*flagp & NFSMNT_DISMNT) { 899 cv_signal(&nmp->nm_disconcv); 900 error = EIO; 901 break; 902 } 903 /* If our reply was received while we were sleeping, 904 * then just return without taking the lock to avoid a 905 * situation where a single iod could 'capture' the 906 * receive lock. 907 */ 908 if (rep->r_mrep != NULL) { 909 cv_signal(&nmp->nm_rcvcv); 910 error = EALREADY; 911 break; 912 } 913 if (nfs_sigintr(rep->r_nmp, rep, rep->r_lwp)) { 914 cv_signal(&nmp->nm_rcvcv); 915 error = EINTR; 916 break; 917 } 918 if ((*flagp & NFSMNT_RCVLOCK) == 0) { 919 *flagp |= NFSMNT_RCVLOCK; 920 break; 921 } 922 if (catch) { 923 cv_timedwait_sig(&nmp->nm_rcvcv, &nmp->nm_lock, 924 slptimeo); 925 } else { 926 cv_timedwait(&nmp->nm_rcvcv, &nmp->nm_lock, 927 slptimeo); 928 } 929 if (catch) { 930 catch = false; 931 slptimeo = 2 * hz; 932 } 933 } 934 mutex_exit(&nmp->nm_lock); 935 return error; 936 } 937 938 /* 939 * Unlock the stream socket for others. 940 */ 941 void 942 nfs_rcvunlock(struct nfsmount *nmp) 943 { 944 945 mutex_enter(&nmp->nm_lock); 946 if ((nmp->nm_iflag & NFSMNT_RCVLOCK) == 0) 947 panic("nfs rcvunlock"); 948 nmp->nm_iflag &= ~NFSMNT_RCVLOCK; 949 cv_signal(&nmp->nm_rcvcv); 950 mutex_exit(&nmp->nm_lock); 951 } 952 953 /* 954 * Parse an RPC request 955 * - verify it 956 * - allocate and fill in the cred. 957 */ 958 int 959 nfs_getreq(struct nfsrv_descript *nd, struct nfsd *nfsd, int has_header) 960 { 961 int len, i; 962 u_int32_t *tl; 963 int32_t t1; 964 struct uio uio; 965 struct iovec iov; 966 char *dpos, *cp2, *cp; 967 u_int32_t nfsvers, auth_type; 968 uid_t nickuid; 969 int error = 0, ticklen; 970 struct mbuf *mrep, *md; 971 struct nfsuid *nuidp; 972 struct timeval tvin, tvout; 973 974 memset(&tvout, 0, sizeof tvout); /* XXX gcc */ 975 976 KASSERT(nd->nd_cr == NULL); 977 mrep = nd->nd_mrep; 978 md = nd->nd_md; 979 dpos = nd->nd_dpos; 980 if (has_header) { 981 nfsm_dissect(tl, u_int32_t *, 10 * NFSX_UNSIGNED); 982 nd->nd_retxid = fxdr_unsigned(u_int32_t, *tl++); 983 if (*tl++ != rpc_call) { 984 m_freem(mrep); 985 return (EBADRPC); 986 } 987 } else 988 nfsm_dissect(tl, u_int32_t *, 8 * NFSX_UNSIGNED); 989 nd->nd_repstat = 0; 990 nd->nd_flag = 0; 991 if (*tl++ != rpc_vers) { 992 nd->nd_repstat = ERPCMISMATCH; 993 nd->nd_procnum = NFSPROC_NOOP; 994 return (0); 995 } 996 if (*tl != nfs_prog) { 997 nd->nd_repstat = EPROGUNAVAIL; 998 nd->nd_procnum = NFSPROC_NOOP; 999 return (0); 1000 } 1001 tl++; 1002 nfsvers = fxdr_unsigned(u_int32_t, *tl++); 1003 if (nfsvers < NFS_VER2 || nfsvers > NFS_VER3) { 1004 nd->nd_repstat = EPROGMISMATCH; 1005 nd->nd_procnum = NFSPROC_NOOP; 1006 return (0); 1007 } 1008 if (nfsvers == NFS_VER3) 1009 nd->nd_flag = ND_NFSV3; 1010 nd->nd_procnum = fxdr_unsigned(u_int32_t, *tl++); 1011 if (nd->nd_procnum == NFSPROC_NULL) 1012 return (0); 1013 if (nd->nd_procnum > NFSPROC_COMMIT || 1014 (!nd->nd_flag && nd->nd_procnum > NFSV2PROC_STATFS)) { 1015 nd->nd_repstat = EPROCUNAVAIL; 1016 nd->nd_procnum = NFSPROC_NOOP; 1017 return (0); 1018 } 1019 if ((nd->nd_flag & ND_NFSV3) == 0) 1020 nd->nd_procnum = nfsv3_procid[nd->nd_procnum]; 1021 auth_type = *tl++; 1022 len = fxdr_unsigned(int, *tl++); 1023 if (len < 0 || len > RPCAUTH_MAXSIZ) { 1024 m_freem(mrep); 1025 return (EBADRPC); 1026 } 1027 1028 nd->nd_flag &= ~ND_KERBAUTH; 1029 /* 1030 * Handle auth_unix or auth_kerb. 1031 */ 1032 if (auth_type == rpc_auth_unix) { 1033 uid_t uid; 1034 gid_t gid; 1035 1036 nd->nd_cr = kauth_cred_alloc(); 1037 len = fxdr_unsigned(int, *++tl); 1038 if (len < 0 || len > NFS_MAXNAMLEN) { 1039 m_freem(mrep); 1040 error = EBADRPC; 1041 goto errout; 1042 } 1043 nfsm_adv(nfsm_rndup(len)); 1044 nfsm_dissect(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 1045 1046 uid = fxdr_unsigned(uid_t, *tl++); 1047 gid = fxdr_unsigned(gid_t, *tl++); 1048 kauth_cred_setuid(nd->nd_cr, uid); 1049 kauth_cred_seteuid(nd->nd_cr, uid); 1050 kauth_cred_setsvuid(nd->nd_cr, uid); 1051 kauth_cred_setgid(nd->nd_cr, gid); 1052 kauth_cred_setegid(nd->nd_cr, gid); 1053 kauth_cred_setsvgid(nd->nd_cr, gid); 1054 1055 len = fxdr_unsigned(int, *tl); 1056 if (len < 0 || len > RPCAUTH_UNIXGIDS) { 1057 m_freem(mrep); 1058 error = EBADRPC; 1059 goto errout; 1060 } 1061 nfsm_dissect(tl, u_int32_t *, (len + 2) * NFSX_UNSIGNED); 1062 1063 if (len > 0) { 1064 size_t grbuf_size = min(len, NGROUPS) * sizeof(gid_t); 1065 gid_t *grbuf = kmem_alloc(grbuf_size, KM_SLEEP); 1066 1067 for (i = 0; i < len; i++) { 1068 if (i < NGROUPS) /* XXX elad */ 1069 grbuf[i] = fxdr_unsigned(gid_t, *tl++); 1070 else 1071 tl++; 1072 } 1073 kauth_cred_setgroups(nd->nd_cr, grbuf, 1074 min(len, NGROUPS), -1, UIO_SYSSPACE); 1075 kmem_free(grbuf, grbuf_size); 1076 } 1077 1078 len = fxdr_unsigned(int, *++tl); 1079 if (len < 0 || len > RPCAUTH_MAXSIZ) { 1080 m_freem(mrep); 1081 error = EBADRPC; 1082 goto errout; 1083 } 1084 if (len > 0) 1085 nfsm_adv(nfsm_rndup(len)); 1086 } else if (auth_type == rpc_auth_kerb) { 1087 switch (fxdr_unsigned(int, *tl++)) { 1088 case RPCAKN_FULLNAME: 1089 ticklen = fxdr_unsigned(int, *tl); 1090 *((u_int32_t *)nfsd->nfsd_authstr) = *tl; 1091 uio.uio_resid = nfsm_rndup(ticklen) + NFSX_UNSIGNED; 1092 nfsd->nfsd_authlen = uio.uio_resid + NFSX_UNSIGNED; 1093 if (uio.uio_resid > (len - 2 * NFSX_UNSIGNED)) { 1094 m_freem(mrep); 1095 error = EBADRPC; 1096 goto errout; 1097 } 1098 uio.uio_offset = 0; 1099 uio.uio_iov = &iov; 1100 uio.uio_iovcnt = 1; 1101 UIO_SETUP_SYSSPACE(&uio); 1102 iov.iov_base = (void *)&nfsd->nfsd_authstr[4]; 1103 iov.iov_len = RPCAUTH_MAXSIZ - 4; 1104 nfsm_mtouio(&uio, uio.uio_resid); 1105 nfsm_dissect(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1106 if (*tl++ != rpc_auth_kerb || 1107 fxdr_unsigned(int, *tl) != 4 * NFSX_UNSIGNED) { 1108 printf("Bad kerb verifier\n"); 1109 nd->nd_repstat = (NFSERR_AUTHERR|AUTH_BADVERF); 1110 nd->nd_procnum = NFSPROC_NOOP; 1111 return (0); 1112 } 1113 nfsm_dissect(cp, void *, 4 * NFSX_UNSIGNED); 1114 tl = (u_int32_t *)cp; 1115 if (fxdr_unsigned(int, *tl) != RPCAKN_FULLNAME) { 1116 printf("Not fullname kerb verifier\n"); 1117 nd->nd_repstat = (NFSERR_AUTHERR|AUTH_BADVERF); 1118 nd->nd_procnum = NFSPROC_NOOP; 1119 return (0); 1120 } 1121 cp += NFSX_UNSIGNED; 1122 memcpy(nfsd->nfsd_verfstr, cp, 3 * NFSX_UNSIGNED); 1123 nfsd->nfsd_verflen = 3 * NFSX_UNSIGNED; 1124 nd->nd_flag |= ND_KERBFULL; 1125 nfsd->nfsd_flag |= NFSD_NEEDAUTH; 1126 break; 1127 case RPCAKN_NICKNAME: 1128 if (len != 2 * NFSX_UNSIGNED) { 1129 printf("Kerb nickname short\n"); 1130 nd->nd_repstat = (NFSERR_AUTHERR|AUTH_BADCRED); 1131 nd->nd_procnum = NFSPROC_NOOP; 1132 return (0); 1133 } 1134 nickuid = fxdr_unsigned(uid_t, *tl); 1135 nfsm_dissect(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1136 if (*tl++ != rpc_auth_kerb || 1137 fxdr_unsigned(int, *tl) != 3 * NFSX_UNSIGNED) { 1138 printf("Kerb nick verifier bad\n"); 1139 nd->nd_repstat = (NFSERR_AUTHERR|AUTH_BADVERF); 1140 nd->nd_procnum = NFSPROC_NOOP; 1141 return (0); 1142 } 1143 nfsm_dissect(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 1144 tvin.tv_sec = *tl++; 1145 tvin.tv_usec = *tl; 1146 1147 LIST_FOREACH(nuidp, NUIDHASH(nfsd->nfsd_slp, nickuid), 1148 nu_hash) { 1149 if (kauth_cred_geteuid(nuidp->nu_cr) == nickuid && 1150 (!nd->nd_nam2 || 1151 netaddr_match(NU_NETFAM(nuidp), 1152 &nuidp->nu_haddr, nd->nd_nam2))) 1153 break; 1154 } 1155 if (!nuidp) { 1156 nd->nd_repstat = 1157 (NFSERR_AUTHERR|AUTH_REJECTCRED); 1158 nd->nd_procnum = NFSPROC_NOOP; 1159 return (0); 1160 } 1161 1162 /* 1163 * Now, decrypt the timestamp using the session key 1164 * and validate it. 1165 */ 1166 #ifdef NFSKERB 1167 XXX 1168 #endif 1169 1170 tvout.tv_sec = fxdr_unsigned(long, tvout.tv_sec); 1171 tvout.tv_usec = fxdr_unsigned(long, tvout.tv_usec); 1172 if (nuidp->nu_expire < time_second || 1173 nuidp->nu_timestamp.tv_sec > tvout.tv_sec || 1174 (nuidp->nu_timestamp.tv_sec == tvout.tv_sec && 1175 nuidp->nu_timestamp.tv_usec > tvout.tv_usec)) { 1176 nuidp->nu_expire = 0; 1177 nd->nd_repstat = 1178 (NFSERR_AUTHERR|AUTH_REJECTVERF); 1179 nd->nd_procnum = NFSPROC_NOOP; 1180 return (0); 1181 } 1182 kauth_cred_hold(nuidp->nu_cr); 1183 nd->nd_cr = nuidp->nu_cr; 1184 nd->nd_flag |= ND_KERBNICK; 1185 } 1186 } else { 1187 nd->nd_repstat = (NFSERR_AUTHERR | AUTH_REJECTCRED); 1188 nd->nd_procnum = NFSPROC_NOOP; 1189 return (0); 1190 } 1191 1192 nd->nd_md = md; 1193 nd->nd_dpos = dpos; 1194 KASSERT((nd->nd_cr == NULL && (nfsd->nfsd_flag & NFSD_NEEDAUTH) != 0) 1195 || (nd->nd_cr != NULL && (nfsd->nfsd_flag & NFSD_NEEDAUTH) == 0)); 1196 return (0); 1197 nfsmout: 1198 errout: 1199 KASSERT(error != 0); 1200 if (nd->nd_cr != NULL) { 1201 kauth_cred_free(nd->nd_cr); 1202 nd->nd_cr = NULL; 1203 } 1204 return (error); 1205 } 1206 1207 int 1208 nfs_msg(struct lwp *l, const char *server, const char *msg) 1209 { 1210 tpr_t tpr; 1211 1212 #if 0 /* XXX nfs_timer can't block on proc_lock */ 1213 if (l) 1214 tpr = tprintf_open(l->l_proc); 1215 else 1216 #endif 1217 tpr = NULL; 1218 tprintf(tpr, "nfs server %s: %s\n", server, msg); 1219 tprintf_close(tpr); 1220 return (0); 1221 } 1222 1223 static struct pool nfs_srvdesc_pool; 1224 1225 void 1226 nfsdreq_init(void) 1227 { 1228 1229 pool_init(&nfs_srvdesc_pool, sizeof(struct nfsrv_descript), 1230 0, 0, 0, "nfsrvdescpl", &pool_allocator_nointr, IPL_NONE); 1231 } 1232 1233 void 1234 nfsdreq_fini(void) 1235 { 1236 1237 pool_destroy(&nfs_srvdesc_pool); 1238 } 1239 1240 struct nfsrv_descript * 1241 nfsdreq_alloc(void) 1242 { 1243 struct nfsrv_descript *nd; 1244 1245 nd = pool_get(&nfs_srvdesc_pool, PR_WAITOK); 1246 nd->nd_cr = NULL; 1247 return nd; 1248 } 1249 1250 void 1251 nfsdreq_free(struct nfsrv_descript *nd) 1252 { 1253 kauth_cred_t cr; 1254 1255 cr = nd->nd_cr; 1256 if (cr != NULL) { 1257 kauth_cred_free(cr); 1258 } 1259 pool_put(&nfs_srvdesc_pool, nd); 1260 } 1261
Indexes created Tue Sep 30 11:09:46 GMT 2025