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