1 /* 2 * Copyright (c) 2000-2001 Boris Popov 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by Boris Popov. 16 * 4. Neither the name of the author nor the names of any co-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 AUTHOR 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 AUTHOR 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 * $FreeBSD$ 33 */ 34 #include <sys/param.h> 35 #include <sys/condvar.h> 36 #include <sys/kernel.h> 37 #include <sys/lock.h> 38 #include <sys/malloc.h> 39 #include <sys/mbuf.h> 40 #include <sys/poll.h> 41 #include <sys/proc.h> 42 #include <sys/protosw.h> 43 #include <sys/signalvar.h> 44 #include <sys/socket.h> 45 #include <sys/socketvar.h> 46 #include <sys/sx.h> 47 #include <sys/sysctl.h> 48 #include <sys/systm.h> 49 #include <sys/uio.h> 50 51 #include <net/if.h> 52 #include <net/route.h> 53 54 #include <netinet/in.h> 55 #include <netinet/tcp.h> 56 57 #include <sys/mchain.h> 58 59 #include <netsmb/netbios.h> 60 61 #include <netsmb/smb.h> 62 #include <netsmb/smb_conn.h> 63 #include <netsmb/smb_tran.h> 64 #include <netsmb/smb_trantcp.h> 65 #include <netsmb/smb_subr.h> 66 67 #define M_NBDATA M_PCB 68 69 static int smb_tcpsndbuf = 10 * 1024; 70 static int smb_tcprcvbuf = 10 * 1024; 71 72 SYSCTL_DECL(_net_smb); 73 SYSCTL_INT(_net_smb, OID_AUTO, tcpsndbuf, CTLFLAG_RW, &smb_tcpsndbuf, 0, ""); 74 SYSCTL_INT(_net_smb, OID_AUTO, tcprcvbuf, CTLFLAG_RW, &smb_tcprcvbuf, 0, ""); 75 76 #define nb_sosend(so,m,flags,td) (so)->so_proto->pr_usrreqs->pru_sosend( \ 77 so, NULL, 0, m, 0, flags, td) 78 79 static int nbssn_recv(struct nbpcb *nbp, struct mbuf **mpp, int *lenp, 80 u_int8_t *rpcodep, struct thread *td); 81 static int smb_nbst_disconnect(struct smb_vc *vcp, struct thread *td); 82 83 static int 84 nb_setsockopt_int(struct socket *so, int level, int name, int val) 85 { 86 struct sockopt sopt; 87 88 bzero(&sopt, sizeof(sopt)); 89 sopt.sopt_level = level; 90 sopt.sopt_name = name; 91 sopt.sopt_val = &val; 92 sopt.sopt_valsize = sizeof(val); 93 return sosetopt(so, &sopt); 94 } 95 96 static __inline int 97 nb_poll(struct nbpcb *nbp, int events, struct thread *td) 98 { 99 return nbp->nbp_tso->so_proto->pr_usrreqs->pru_sopoll(nbp->nbp_tso, 100 events, NULL, td); 101 } 102 103 static int 104 nbssn_rselect(struct nbpcb *nbp, struct timeval *tv, int events, 105 struct thread *td) 106 { 107 struct timeval atv, rtv, ttv; 108 int ncoll, timo, error; 109 110 if (tv) { 111 atv = *tv; 112 if (itimerfix(&atv)) { 113 error = EINVAL; 114 goto done_noproclock; 115 } 116 getmicrouptime(&rtv); 117 timevaladd(&atv, &rtv); 118 } 119 timo = 0; 120 mtx_lock(&sellock); 121 retry: 122 123 ncoll = nselcoll; 124 mtx_lock_spin(&sched_lock); 125 td->td_flags |= TDF_SELECT; 126 mtx_unlock_spin(&sched_lock); 127 mtx_unlock(&sellock); 128 129 /* XXX: Should be done when the thread is initialized. */ 130 TAILQ_INIT(&td->td_selq); 131 error = nb_poll(nbp, events, td); 132 mtx_lock(&sellock); 133 if (error) { 134 error = 0; 135 goto done; 136 } 137 if (tv) { 138 getmicrouptime(&rtv); 139 if (timevalcmp(&rtv, &atv, >=)) 140 goto done; 141 ttv = atv; 142 timevalsub(&ttv, &rtv); 143 timo = tvtohz(&ttv); 144 } 145 /* 146 * An event of our interest may occur during locking a process. 147 * In order to avoid missing the event that occurred during locking 148 * the process, test P_SELECT and rescan file descriptors if 149 * necessary. 150 */ 151 mtx_lock_spin(&sched_lock); 152 if ((td->td_flags & TDF_SELECT) == 0 || nselcoll != ncoll) { 153 mtx_unlock_spin(&sched_lock); 154 goto retry; 155 } 156 mtx_unlock_spin(&sched_lock); 157 158 if (timo > 0) 159 error = cv_timedwait(&selwait, &sellock, timo); 160 else { 161 cv_wait(&selwait, &sellock); 162 error = 0; 163 } 164 165 done: 166 clear_selinfo_list(td); 167 168 mtx_lock_spin(&sched_lock); 169 td->td_flags &= ~TDF_SELECT; 170 mtx_unlock_spin(&sched_lock); 171 mtx_unlock(&sellock); 172 173 done_noproclock: 174 if (error == ERESTART) 175 return 0; 176 return error; 177 } 178 179 static int 180 nb_intr(struct nbpcb *nbp, struct proc *p) 181 { 182 return 0; 183 } 184 185 static void 186 nb_upcall(struct socket *so, void *arg, int waitflag) 187 { 188 struct nbpcb *nbp = arg; 189 190 if (arg == NULL || nbp->nbp_selectid == NULL) 191 return; 192 wakeup(nbp->nbp_selectid); 193 } 194 195 static int 196 nb_sethdr(struct mbuf *m, u_int8_t type, u_int32_t len) 197 { 198 u_int32_t *p = mtod(m, u_int32_t *); 199 200 *p = htonl((len & 0x1FFFF) | (type << 24)); 201 return 0; 202 } 203 204 static int 205 nb_put_name(struct mbchain *mbp, struct sockaddr_nb *snb) 206 { 207 int error; 208 u_char seglen, *cp; 209 210 cp = snb->snb_name; 211 if (*cp == 0) 212 return EINVAL; 213 NBDEBUG("[%s]\n", cp); 214 for (;;) { 215 seglen = (*cp) + 1; 216 error = mb_put_mem(mbp, cp, seglen, MB_MSYSTEM); 217 if (error) 218 return error; 219 if (seglen == 1) 220 break; 221 cp += seglen; 222 } 223 return 0; 224 } 225 226 static int 227 nb_connect_in(struct nbpcb *nbp, struct sockaddr_in *to, struct thread *td) 228 { 229 struct socket *so; 230 int error, s; 231 232 error = socreate(AF_INET, &so, SOCK_STREAM, IPPROTO_TCP, 233 td->td_ucred, td); 234 if (error) 235 return error; 236 nbp->nbp_tso = so; 237 so->so_upcallarg = (caddr_t)nbp; 238 so->so_upcall = nb_upcall; 239 so->so_rcv.sb_flags |= SB_UPCALL; 240 so->so_rcv.sb_timeo = (5 * hz); 241 so->so_snd.sb_timeo = (5 * hz); 242 error = soreserve(so, nbp->nbp_sndbuf, nbp->nbp_rcvbuf); 243 if (error) 244 goto bad; 245 nb_setsockopt_int(so, SOL_SOCKET, SO_KEEPALIVE, 1); 246 nb_setsockopt_int(so, IPPROTO_TCP, TCP_NODELAY, 1); 247 so->so_rcv.sb_flags &= ~SB_NOINTR; 248 so->so_snd.sb_flags &= ~SB_NOINTR; 249 error = soconnect(so, (struct sockaddr*)to, td); 250 if (error) 251 goto bad; 252 s = splnet(); 253 while ((so->so_state & SS_ISCONNECTING) && so->so_error == 0) { 254 tsleep(&so->so_timeo, PSOCK, "nbcon", 2 * hz); 255 if ((so->so_state & SS_ISCONNECTING) && so->so_error == 0 && 256 (error = nb_intr(nbp, td->td_proc)) != 0) { 257 so->so_state &= ~SS_ISCONNECTING; 258 splx(s); 259 goto bad; 260 } 261 } 262 if (so->so_error) { 263 error = so->so_error; 264 so->so_error = 0; 265 splx(s); 266 goto bad; 267 } 268 splx(s); 269 return 0; 270 bad: 271 smb_nbst_disconnect(nbp->nbp_vc, td); 272 return error; 273 } 274 275 static int 276 nbssn_rq_request(struct nbpcb *nbp, struct thread *td) 277 { 278 struct mbchain mb, *mbp = &mb; 279 struct mdchain md, *mdp = &md; 280 struct mbuf *m0; 281 struct timeval tv; 282 struct sockaddr_in sin; 283 u_short port; 284 u_int8_t rpcode; 285 int error, rplen; 286 287 error = mb_init(mbp); 288 if (error) 289 return error; 290 mb_put_uint32le(mbp, 0); 291 nb_put_name(mbp, nbp->nbp_paddr); 292 nb_put_name(mbp, nbp->nbp_laddr); 293 nb_sethdr(mbp->mb_top, NB_SSN_REQUEST, mb_fixhdr(mbp) - 4); 294 error = nb_sosend(nbp->nbp_tso, mbp->mb_top, 0, td); 295 if (!error) { 296 nbp->nbp_state = NBST_RQSENT; 297 } 298 mb_detach(mbp); 299 mb_done(mbp); 300 if (error) 301 return error; 302 TIMESPEC_TO_TIMEVAL(&tv, &nbp->nbp_timo); 303 error = nbssn_rselect(nbp, &tv, POLLIN, td); 304 if (error == EWOULDBLOCK) { /* Timeout */ 305 NBDEBUG("initial request timeout\n"); 306 return ETIMEDOUT; 307 } 308 if (error) /* restart or interrupt */ 309 return error; 310 error = nbssn_recv(nbp, &m0, &rplen, &rpcode, td); 311 if (error) { 312 NBDEBUG("recv() error %d\n", error); 313 return error; 314 } 315 /* 316 * Process NETBIOS reply 317 */ 318 if (m0) 319 md_initm(mdp, m0); 320 error = 0; 321 do { 322 if (rpcode == NB_SSN_POSRESP) { 323 nbp->nbp_state = NBST_SESSION; 324 nbp->nbp_flags |= NBF_CONNECTED; 325 break; 326 } 327 if (rpcode != NB_SSN_RTGRESP) { 328 error = ECONNABORTED; 329 break; 330 } 331 if (rplen != 6) { 332 error = ECONNABORTED; 333 break; 334 } 335 md_get_mem(mdp, (caddr_t)&sin.sin_addr, 4, MB_MSYSTEM); 336 md_get_uint16(mdp, &port); 337 sin.sin_port = port; 338 nbp->nbp_state = NBST_RETARGET; 339 smb_nbst_disconnect(nbp->nbp_vc, td); 340 error = nb_connect_in(nbp, &sin, td); 341 if (!error) 342 error = nbssn_rq_request(nbp, td); 343 if (error) { 344 smb_nbst_disconnect(nbp->nbp_vc, td); 345 break; 346 } 347 } while(0); 348 if (m0) 349 md_done(mdp); 350 return error; 351 } 352 353 static int 354 nbssn_recvhdr(struct nbpcb *nbp, int *lenp, 355 u_int8_t *rpcodep, int flags, struct thread *td) 356 { 357 struct socket *so = nbp->nbp_tso; 358 struct uio auio; 359 struct iovec aio; 360 u_int32_t len; 361 int error; 362 363 aio.iov_base = (caddr_t)&len; 364 aio.iov_len = sizeof(len); 365 auio.uio_iov = &aio; 366 auio.uio_iovcnt = 1; 367 auio.uio_segflg = UIO_SYSSPACE; 368 auio.uio_rw = UIO_READ; 369 auio.uio_offset = 0; 370 auio.uio_resid = sizeof(len); 371 auio.uio_td = td; 372 error = so->so_proto->pr_usrreqs->pru_soreceive 373 (so, (struct sockaddr **)NULL, &auio, 374 (struct mbuf **)NULL, (struct mbuf **)NULL, &flags); 375 if (error) 376 return error; 377 if (auio.uio_resid > 0) { 378 SMBSDEBUG("short reply\n"); 379 return EPIPE; 380 } 381 len = ntohl(len); 382 *rpcodep = (len >> 24) & 0xFF; 383 len &= 0x1ffff; 384 if (len > SMB_MAXPKTLEN) { 385 SMBERROR("packet too long (%d)\n", len); 386 return EFBIG; 387 } 388 *lenp = len; 389 return 0; 390 } 391 392 static int 393 nbssn_recv(struct nbpcb *nbp, struct mbuf **mpp, int *lenp, 394 u_int8_t *rpcodep, struct thread *td) 395 { 396 struct socket *so = nbp->nbp_tso; 397 struct uio auio; 398 struct mbuf *m; 399 u_int8_t rpcode; 400 int len; 401 int error, rcvflg; 402 403 if (so == NULL) 404 return ENOTCONN; 405 406 if (mpp) 407 *mpp = NULL; 408 for(;;) { 409 m = NULL; 410 error = nbssn_recvhdr(nbp, &len, &rpcode, MSG_DONTWAIT, td); 411 if (so->so_state & 412 (SS_ISDISCONNECTING | SS_ISDISCONNECTED | SS_CANTRCVMORE)) { 413 nbp->nbp_state = NBST_CLOSED; 414 NBDEBUG("session closed by peer\n"); 415 return ECONNRESET; 416 } 417 if (error) 418 return error; 419 if (len == 0 && nbp->nbp_state != NBST_SESSION) 420 break; 421 if (rpcode == NB_SSN_KEEPALIVE) 422 continue; 423 bzero(&auio, sizeof(auio)); 424 auio.uio_resid = len; 425 auio.uio_td = td; 426 do { 427 rcvflg = MSG_WAITALL; 428 error = so->so_proto->pr_usrreqs->pru_soreceive 429 (so, (struct sockaddr **)NULL, 430 &auio, &m, (struct mbuf **)NULL, &rcvflg); 431 } while (error == EWOULDBLOCK || error == EINTR || 432 error == ERESTART); 433 if (error) 434 break; 435 if (auio.uio_resid > 0) { 436 SMBERROR("packet is shorter than expected\n"); 437 error = EPIPE; 438 break; 439 } 440 if (nbp->nbp_state == NBST_SESSION && 441 rpcode == NB_SSN_MESSAGE) 442 break; 443 NBDEBUG("non-session packet %x\n", rpcode); 444 if (m) 445 m_freem(m); 446 } 447 if (error) { 448 if (m) 449 m_freem(m); 450 return error; 451 } 452 if (mpp) 453 *mpp = m; 454 else 455 m_freem(m); 456 *lenp = len; 457 *rpcodep = rpcode; 458 return 0; 459 } 460 461 /* 462 * SMB transport interface 463 */ 464 static int 465 smb_nbst_create(struct smb_vc *vcp, struct thread *td) 466 { 467 struct nbpcb *nbp; 468 469 MALLOC(nbp, struct nbpcb *, sizeof *nbp, M_NBDATA, M_WAITOK); 470 bzero(nbp, sizeof *nbp); 471 nbp->nbp_timo.tv_sec = 15; /* XXX: sysctl ? */ 472 nbp->nbp_state = NBST_CLOSED; 473 nbp->nbp_vc = vcp; 474 nbp->nbp_sndbuf = smb_tcpsndbuf; 475 nbp->nbp_rcvbuf = smb_tcprcvbuf; 476 vcp->vc_tdata = nbp; 477 return 0; 478 } 479 480 static int 481 smb_nbst_done(struct smb_vc *vcp, struct thread *td) 482 { 483 struct nbpcb *nbp = vcp->vc_tdata; 484 485 if (nbp == NULL) 486 return ENOTCONN; 487 smb_nbst_disconnect(vcp, td); 488 if (nbp->nbp_laddr) 489 free(nbp->nbp_laddr, M_SONAME); 490 if (nbp->nbp_paddr) 491 free(nbp->nbp_paddr, M_SONAME); 492 free(nbp, M_NBDATA); 493 return 0; 494 } 495 496 static int 497 smb_nbst_bind(struct smb_vc *vcp, struct sockaddr *sap, struct thread *td) 498 { 499 struct nbpcb *nbp = vcp->vc_tdata; 500 struct sockaddr_nb *snb; 501 int error, slen; 502 503 NBDEBUG("\n"); 504 error = EINVAL; 505 do { 506 if (nbp->nbp_flags & NBF_LOCADDR) 507 break; 508 /* 509 * It is possible to create NETBIOS name in the kernel, 510 * but nothing prevents us to do it in the user space. 511 */ 512 if (sap == NULL) 513 break; 514 slen = sap->sa_len; 515 if (slen < NB_MINSALEN) 516 break; 517 snb = (struct sockaddr_nb*)dup_sockaddr(sap, 1); 518 if (snb == NULL) { 519 error = ENOMEM; 520 break; 521 } 522 nbp->nbp_laddr = snb; 523 nbp->nbp_flags |= NBF_LOCADDR; 524 error = 0; 525 } while(0); 526 return error; 527 } 528 529 static int 530 smb_nbst_connect(struct smb_vc *vcp, struct sockaddr *sap, struct thread *td) 531 { 532 struct nbpcb *nbp = vcp->vc_tdata; 533 struct sockaddr_in sin; 534 struct sockaddr_nb *snb; 535 struct timespec ts1, ts2; 536 int error, slen; 537 538 NBDEBUG("\n"); 539 if (nbp->nbp_tso != NULL) 540 return EISCONN; 541 if (nbp->nbp_laddr == NULL) 542 return EINVAL; 543 slen = sap->sa_len; 544 if (slen < NB_MINSALEN) 545 return EINVAL; 546 if (nbp->nbp_paddr) { 547 free(nbp->nbp_paddr, M_SONAME); 548 nbp->nbp_paddr = NULL; 549 } 550 snb = (struct sockaddr_nb*)dup_sockaddr(sap, 1); 551 if (snb == NULL) 552 return ENOMEM; 553 nbp->nbp_paddr = snb; 554 sin = snb->snb_addrin; 555 getnanotime(&ts1); 556 error = nb_connect_in(nbp, &sin, td); 557 if (error) 558 return error; 559 getnanotime(&ts2); 560 timespecsub(&ts2, &ts1); 561 if (ts2.tv_sec == 0 && ts2.tv_sec == 0) 562 ts2.tv_sec = 1; 563 nbp->nbp_timo = ts2; 564 timespecadd(&nbp->nbp_timo, &ts2); 565 timespecadd(&nbp->nbp_timo, &ts2); 566 timespecadd(&nbp->nbp_timo, &ts2); /* * 4 */ 567 error = nbssn_rq_request(nbp, td); 568 if (error) 569 smb_nbst_disconnect(vcp, td); 570 return error; 571 } 572 573 static int 574 smb_nbst_disconnect(struct smb_vc *vcp, struct thread *td) 575 { 576 struct nbpcb *nbp = vcp->vc_tdata; 577 struct socket *so; 578 579 if (nbp == NULL || nbp->nbp_tso == NULL) 580 return ENOTCONN; 581 if ((so = nbp->nbp_tso) != NULL) { 582 nbp->nbp_flags &= ~NBF_CONNECTED; 583 nbp->nbp_tso = (struct socket *)NULL; 584 soshutdown(so, 2); 585 soclose(so); 586 } 587 if (nbp->nbp_state != NBST_RETARGET) { 588 nbp->nbp_state = NBST_CLOSED; 589 } 590 return 0; 591 } 592 593 static int 594 smb_nbst_send(struct smb_vc *vcp, struct mbuf *m0, struct thread *td) 595 { 596 struct nbpcb *nbp = vcp->vc_tdata; 597 int error; 598 599 if (nbp->nbp_state != NBST_SESSION) { 600 error = ENOTCONN; 601 goto abort; 602 } 603 M_PREPEND(m0, 4, M_WAITOK); 604 if (m0 == NULL) 605 return ENOBUFS; 606 nb_sethdr(m0, NB_SSN_MESSAGE, m_fixhdr(m0) - 4); 607 error = nb_sosend(nbp->nbp_tso, m0, 0, td); 608 return error; 609 abort: 610 if (m0) 611 m_freem(m0); 612 return error; 613 } 614 615 616 static int 617 smb_nbst_recv(struct smb_vc *vcp, struct mbuf **mpp, struct thread *td) 618 { 619 struct nbpcb *nbp = vcp->vc_tdata; 620 u_int8_t rpcode; 621 int error, rplen; 622 623 nbp->nbp_flags |= NBF_RECVLOCK; 624 error = nbssn_recv(nbp, mpp, &rplen, &rpcode, td); 625 nbp->nbp_flags &= ~NBF_RECVLOCK; 626 return error; 627 } 628 629 static void 630 smb_nbst_timo(struct smb_vc *vcp) 631 { 632 return; 633 } 634 635 static void 636 smb_nbst_intr(struct smb_vc *vcp) 637 { 638 struct nbpcb *nbp = vcp->vc_tdata; 639 640 if (nbp == NULL || nbp->nbp_tso == NULL) 641 return; 642 sorwakeup(nbp->nbp_tso); 643 sowwakeup(nbp->nbp_tso); 644 } 645 646 static int 647 smb_nbst_getparam(struct smb_vc *vcp, int param, void *data) 648 { 649 struct nbpcb *nbp = vcp->vc_tdata; 650 651 switch (param) { 652 case SMBTP_SNDSZ: 653 *(int*)data = nbp->nbp_sndbuf; 654 break; 655 case SMBTP_RCVSZ: 656 *(int*)data = nbp->nbp_rcvbuf; 657 break; 658 case SMBTP_TIMEOUT: 659 *(struct timespec*)data = nbp->nbp_timo; 660 break; 661 default: 662 return EINVAL; 663 } 664 return 0; 665 } 666 667 static int 668 smb_nbst_setparam(struct smb_vc *vcp, int param, void *data) 669 { 670 struct nbpcb *nbp = vcp->vc_tdata; 671 672 switch (param) { 673 case SMBTP_SELECTID: 674 nbp->nbp_selectid = data; 675 break; 676 default: 677 return EINVAL; 678 } 679 return 0; 680 } 681 682 /* 683 * Check for fatal errors 684 */ 685 static int 686 smb_nbst_fatal(struct smb_vc *vcp, int error) 687 { 688 switch (error) { 689 case ENOTCONN: 690 case ENETRESET: 691 case ECONNABORTED: 692 return 1; 693 } 694 return 0; 695 } 696 697 698 struct smb_tran_desc smb_tran_nbtcp_desc = { 699 SMBT_NBTCP, 700 smb_nbst_create, smb_nbst_done, 701 smb_nbst_bind, smb_nbst_connect, smb_nbst_disconnect, 702 smb_nbst_send, smb_nbst_recv, 703 smb_nbst_timo, smb_nbst_intr, 704 smb_nbst_getparam, smb_nbst_setparam, 705 smb_nbst_fatal 706 }; 707 708