| 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: src/sys/netsmb/smb_trantcp.c,v 1.3.2.1 2001/05/22 08:32:34 bp Exp $ |
| 33 | * $DragonFly: src/sys/netproto/smb/smb_trantcp.c,v 1.14 2006/05/06 02:43:13 dillon Exp $ |
| 34 | */ |
| 35 | #include <sys/param.h> |
| 36 | #include <sys/systm.h> |
| 37 | #include <sys/kernel.h> |
| 38 | #include <sys/malloc.h> |
| 39 | #include <sys/mbuf.h> |
| 40 | #include <sys/proc.h> |
| 41 | #include <sys/protosw.h> |
| 42 | #include <sys/resourcevar.h> |
| 43 | #include <sys/socket.h> |
| 44 | #include <sys/socketvar.h> |
| 45 | #include <sys/socketops.h> |
| 46 | #include <sys/poll.h> |
| 47 | #include <sys/uio.h> |
| 48 | #include <sys/sysctl.h> |
| 49 | #include <sys/thread2.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 "netbios.h" |
| 60 | |
| 61 | #include "smb.h" |
| 62 | #include "smb_conn.h" |
| 63 | #include "smb_tran.h" |
| 64 | #include "smb_trantcp.h" |
| 65 | #include "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,p) \ |
| 77 | so_pru_sosend(so, NULL, NULL, m, NULL, 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 so_pru_sopoll(nbp->nbp_tso, events, NULL); |
| 100 | } |
| 101 | |
| 102 | static int |
| 103 | nbssn_rselect(struct nbpcb *nbp, struct timeval *tv, int events, struct thread *td) |
| 104 | { |
| 105 | struct proc *p = td->td_proc; |
| 106 | struct timeval atv, rtv, ttv; |
| 107 | int timo, error; |
| 108 | |
| 109 | if (tv) { |
| 110 | atv = *tv; |
| 111 | if (itimerfix(&atv)) { |
| 112 | error = EINVAL; |
| 113 | goto done; |
| 114 | } |
| 115 | getmicrouptime(&rtv); |
| 116 | timevaladd(&atv, &rtv); |
| 117 | } |
| 118 | timo = 0; |
| 119 | KKASSERT(p); |
| 120 | retry: |
| 121 | p->p_flag |= P_SELECT; |
| 122 | error = nb_poll(nbp, events, td); |
| 123 | if (error) { |
| 124 | error = 0; |
| 125 | goto done; |
| 126 | } |
| 127 | if (tv) { |
| 128 | getmicrouptime(&rtv); |
| 129 | if (timevalcmp(&rtv, &atv, >=)) |
| 130 | goto done; |
| 131 | ttv = atv; |
| 132 | timevalsub(&ttv, &rtv); |
| 133 | timo = tvtohz_high(&ttv); |
| 134 | } |
| 135 | crit_enter(); |
| 136 | if ((p->p_flag & P_SELECT) == 0) { |
| 137 | crit_exit(); |
| 138 | goto retry; |
| 139 | } |
| 140 | p->p_flag &= ~P_SELECT; |
| 141 | error = tsleep((caddr_t)&selwait, 0, "nbsel", timo); |
| 142 | crit_exit(); |
| 143 | done: |
| 144 | p->p_flag &= ~P_SELECT; |
| 145 | if (error == ERESTART) |
| 146 | return 0; |
| 147 | return error; |
| 148 | } |
| 149 | |
| 150 | static int |
| 151 | nb_intr(struct nbpcb *nbp, struct thread *td) |
| 152 | { |
| 153 | return 0; |
| 154 | } |
| 155 | |
| 156 | static void |
| 157 | nb_upcall(struct socket *so, void *arg, int waitflag) |
| 158 | { |
| 159 | struct nbpcb *nbp = arg; |
| 160 | |
| 161 | if (arg == NULL || nbp->nbp_selectid == NULL) |
| 162 | return; |
| 163 | wakeup(nbp->nbp_selectid); |
| 164 | } |
| 165 | |
| 166 | static int |
| 167 | nb_sethdr(struct mbuf *m, u_int8_t type, u_int32_t len) |
| 168 | { |
| 169 | u_int32_t *p = mtod(m, u_int32_t *); |
| 170 | |
| 171 | *p = htonl((len & 0x1FFFF) | (type << 24)); |
| 172 | return 0; |
| 173 | } |
| 174 | |
| 175 | static int |
| 176 | nb_put_name(struct mbchain *mbp, struct sockaddr_nb *snb) |
| 177 | { |
| 178 | int error; |
| 179 | u_char seglen, *cp; |
| 180 | |
| 181 | cp = snb->snb_name; |
| 182 | if (*cp == 0) |
| 183 | return EINVAL; |
| 184 | NBDEBUG("[%s]\n", cp); |
| 185 | for (;;) { |
| 186 | seglen = (*cp) + 1; |
| 187 | error = mb_put_mem(mbp, cp, seglen, MB_MSYSTEM); |
| 188 | if (error) |
| 189 | return error; |
| 190 | if (seglen == 1) |
| 191 | break; |
| 192 | cp += seglen; |
| 193 | } |
| 194 | return 0; |
| 195 | } |
| 196 | |
| 197 | static int |
| 198 | nb_connect_in(struct nbpcb *nbp, struct sockaddr_in *to, struct thread *td) |
| 199 | { |
| 200 | struct socket *so; |
| 201 | int error; |
| 202 | |
| 203 | error = socreate(AF_INET, &so, SOCK_STREAM, IPPROTO_TCP, td); |
| 204 | if (error) |
| 205 | return error; |
| 206 | nbp->nbp_tso = so; |
| 207 | so->so_upcallarg = (caddr_t)nbp; |
| 208 | so->so_upcall = nb_upcall; |
| 209 | so->so_rcv.sb_flags |= SB_UPCALL; |
| 210 | so->so_rcv.sb_timeo = (5 * hz); |
| 211 | so->so_snd.sb_timeo = (5 * hz); |
| 212 | error = soreserve(so, nbp->nbp_sndbuf, nbp->nbp_rcvbuf, |
| 213 | &td->td_proc->p_rlimit[RLIMIT_SBSIZE]); |
| 214 | if (error) |
| 215 | goto bad; |
| 216 | nb_setsockopt_int(so, SOL_SOCKET, SO_KEEPALIVE, 1); |
| 217 | nb_setsockopt_int(so, IPPROTO_TCP, TCP_NODELAY, 1); |
| 218 | so->so_rcv.sb_flags &= ~SB_NOINTR; |
| 219 | so->so_snd.sb_flags &= ~SB_NOINTR; |
| 220 | error = soconnect(so, (struct sockaddr*)to, td); |
| 221 | |
| 222 | /* |
| 223 | * If signals are allowed nbssn_recv() can wind up in a hard loop |
| 224 | * on EWOULDBLOCK. |
| 225 | */ |
| 226 | so->so_rcv.sb_flags |= SB_NOINTR; |
| 227 | so->so_snd.sb_flags |= SB_NOINTR; |
| 228 | if (error) |
| 229 | goto bad; |
| 230 | crit_enter(); |
| 231 | while ((so->so_state & SS_ISCONNECTING) && so->so_error == 0) { |
| 232 | tsleep(&so->so_timeo, 0, "nbcon", 2 * hz); |
| 233 | if ((so->so_state & SS_ISCONNECTING) && so->so_error == 0 && |
| 234 | (error = nb_intr(nbp, td)) != 0) { |
| 235 | so->so_state &= ~SS_ISCONNECTING; |
| 236 | crit_exit(); |
| 237 | goto bad; |
| 238 | } |
| 239 | } |
| 240 | if (so->so_error) { |
| 241 | error = so->so_error; |
| 242 | so->so_error = 0; |
| 243 | crit_exit(); |
| 244 | goto bad; |
| 245 | } |
| 246 | crit_exit(); |
| 247 | return 0; |
| 248 | bad: |
| 249 | smb_nbst_disconnect(nbp->nbp_vc, td); |
| 250 | return error; |
| 251 | } |
| 252 | |
| 253 | static int |
| 254 | nbssn_rq_request(struct nbpcb *nbp, struct thread *td) |
| 255 | { |
| 256 | struct mbchain mb, *mbp = &mb; |
| 257 | struct mdchain md, *mdp = &md; |
| 258 | struct mbuf *m0; |
| 259 | struct timeval tv; |
| 260 | struct sockaddr_in sin; |
| 261 | u_short port; |
| 262 | u_int8_t rpcode; |
| 263 | int error, rplen; |
| 264 | |
| 265 | error = mb_init(mbp); |
| 266 | if (error) |
| 267 | return error; |
| 268 | mb_put_uint32le(mbp, 0); |
| 269 | nb_put_name(mbp, nbp->nbp_paddr); |
| 270 | nb_put_name(mbp, nbp->nbp_laddr); |
| 271 | nb_sethdr(mbp->mb_top, NB_SSN_REQUEST, mb_fixhdr(mbp) - 4); |
| 272 | error = nb_sosend(nbp->nbp_tso, mbp->mb_top, 0, td); |
| 273 | if (!error) { |
| 274 | nbp->nbp_state = NBST_RQSENT; |
| 275 | } |
| 276 | mb_detach(mbp); |
| 277 | mb_done(mbp); |
| 278 | if (error) |
| 279 | return error; |
| 280 | TIMESPEC_TO_TIMEVAL(&tv, &nbp->nbp_timo); |
| 281 | error = nbssn_rselect(nbp, &tv, POLLIN, td); |
| 282 | if (error == EWOULDBLOCK) { /* Timeout */ |
| 283 | NBDEBUG("initial request timeout\n"); |
| 284 | return ETIMEDOUT; |
| 285 | } |
| 286 | if (error) /* restart or interrupt */ |
| 287 | return error; |
| 288 | error = nbssn_recv(nbp, &m0, &rplen, &rpcode, td); |
| 289 | if (error) { |
| 290 | NBDEBUG("recv() error %d\n", error); |
| 291 | return error; |
| 292 | } |
| 293 | /* |
| 294 | * Process NETBIOS reply |
| 295 | */ |
| 296 | if (m0) |
| 297 | md_initm(mdp, m0); |
| 298 | error = 0; |
| 299 | do { |
| 300 | if (rpcode == NB_SSN_POSRESP) { |
| 301 | nbp->nbp_state = NBST_SESSION; |
| 302 | nbp->nbp_flags |= NBF_CONNECTED; |
| 303 | break; |
| 304 | } |
| 305 | if (rpcode != NB_SSN_RTGRESP) { |
| 306 | error = ECONNABORTED; |
| 307 | break; |
| 308 | } |
| 309 | if (rplen != 6) { |
| 310 | error = ECONNABORTED; |
| 311 | break; |
| 312 | } |
| 313 | md_get_mem(mdp, (caddr_t)&sin.sin_addr, 4, MB_MSYSTEM); |
| 314 | md_get_uint16(mdp, &port); |
| 315 | sin.sin_port = port; |
| 316 | nbp->nbp_state = NBST_RETARGET; |
| 317 | smb_nbst_disconnect(nbp->nbp_vc, td); |
| 318 | error = nb_connect_in(nbp, &sin, td); |
| 319 | if (!error) |
| 320 | error = nbssn_rq_request(nbp, td); |
| 321 | if (error) { |
| 322 | smb_nbst_disconnect(nbp->nbp_vc, td); |
| 323 | break; |
| 324 | } |
| 325 | } while(0); |
| 326 | if (m0) |
| 327 | md_done(mdp); |
| 328 | return error; |
| 329 | } |
| 330 | |
| 331 | static int |
| 332 | nbssn_recvhdr(struct nbpcb *nbp, int *lenp, |
| 333 | u_int8_t *rpcodep, int flags, struct thread *td) |
| 334 | { |
| 335 | struct socket *so = nbp->nbp_tso; |
| 336 | struct uio auio; |
| 337 | struct iovec aio; |
| 338 | u_int32_t len; |
| 339 | int error; |
| 340 | |
| 341 | aio.iov_base = (caddr_t)&len; |
| 342 | aio.iov_len = sizeof(len); |
| 343 | auio.uio_iov = &aio; |
| 344 | auio.uio_iovcnt = 1; |
| 345 | auio.uio_segflg = UIO_SYSSPACE; |
| 346 | auio.uio_rw = UIO_READ; |
| 347 | auio.uio_offset = 0; |
| 348 | auio.uio_resid = sizeof(len); |
| 349 | auio.uio_td = td; |
| 350 | error = so_pru_soreceive(so, NULL, &auio, NULL, NULL, &flags); |
| 351 | if (error) |
| 352 | return error; |
| 353 | if (auio.uio_resid > 0) { |
| 354 | SMBSDEBUG("short reply\n"); |
| 355 | return EPIPE; |
| 356 | } |
| 357 | len = ntohl(len); |
| 358 | *rpcodep = (len >> 24) & 0xFF; |
| 359 | len &= 0x1ffff; |
| 360 | if (len > SMB_MAXPKTLEN) { |
| 361 | SMBERROR("packet too long (%d)\n", len); |
| 362 | return EFBIG; |
| 363 | } |
| 364 | *lenp = len; |
| 365 | return 0; |
| 366 | } |
| 367 | |
| 368 | static int |
| 369 | nbssn_recv(struct nbpcb *nbp, struct mbuf **mpp, int *lenp, |
| 370 | u_int8_t *rpcodep, struct thread *td) |
| 371 | { |
| 372 | struct socket *so = nbp->nbp_tso; |
| 373 | struct uio auio; |
| 374 | struct mbuf *m; |
| 375 | u_int8_t rpcode; |
| 376 | int len; |
| 377 | int error, rcvflg; |
| 378 | |
| 379 | if (so == NULL) |
| 380 | return ENOTCONN; |
| 381 | |
| 382 | if (mpp) |
| 383 | *mpp = NULL; |
| 384 | for(;;) { |
| 385 | m = NULL; |
| 386 | error = nbssn_recvhdr(nbp, &len, &rpcode, MSG_DONTWAIT, td); |
| 387 | if (so->so_state & |
| 388 | (SS_ISDISCONNECTING | SS_ISDISCONNECTED | SS_CANTRCVMORE)) { |
| 389 | nbp->nbp_state = NBST_CLOSED; |
| 390 | NBDEBUG("session closed by peer\n"); |
| 391 | return ECONNRESET; |
| 392 | } |
| 393 | if (error) |
| 394 | return error; |
| 395 | if (len == 0 && nbp->nbp_state != NBST_SESSION) |
| 396 | break; |
| 397 | if (rpcode == NB_SSN_KEEPALIVE) |
| 398 | continue; |
| 399 | bzero(&auio, sizeof(auio)); |
| 400 | auio.uio_resid = len; |
| 401 | auio.uio_td = td; |
| 402 | do { |
| 403 | rcvflg = MSG_WAITALL; |
| 404 | error = so_pru_soreceive(so, NULL, &auio, &m, NULL, |
| 405 | &rcvflg); |
| 406 | } while (error == EWOULDBLOCK || error == EINTR || |
| 407 | error == ERESTART); |
| 408 | if (error) |
| 409 | break; |
| 410 | if (auio.uio_resid > 0) { |
| 411 | SMBERROR("packet is shorter than expected\n"); |
| 412 | error = EPIPE; |
| 413 | break; |
| 414 | } |
| 415 | if (nbp->nbp_state == NBST_SESSION && |
| 416 | rpcode == NB_SSN_MESSAGE) |
| 417 | break; |
| 418 | NBDEBUG("non-session packet %x\n", rpcode); |
| 419 | if (m) |
| 420 | m_freem(m); |
| 421 | } |
| 422 | if (error) { |
| 423 | if (m) |
| 424 | m_freem(m); |
| 425 | return error; |
| 426 | } |
| 427 | if (mpp) |
| 428 | *mpp = m; |
| 429 | else |
| 430 | m_freem(m); |
| 431 | *lenp = len; |
| 432 | *rpcodep = rpcode; |
| 433 | return 0; |
| 434 | } |
| 435 | |
| 436 | /* |
| 437 | * SMB transport interface |
| 438 | */ |
| 439 | static int |
| 440 | smb_nbst_create(struct smb_vc *vcp, struct thread *td) |
| 441 | { |
| 442 | struct nbpcb *nbp; |
| 443 | |
| 444 | MALLOC(nbp, struct nbpcb *, sizeof *nbp, M_NBDATA, M_WAITOK); |
| 445 | bzero(nbp, sizeof *nbp); |
| 446 | nbp->nbp_timo.tv_sec = 15; /* XXX: sysctl ? */ |
| 447 | nbp->nbp_state = NBST_CLOSED; |
| 448 | nbp->nbp_vc = vcp; |
| 449 | nbp->nbp_sndbuf = smb_tcpsndbuf; |
| 450 | nbp->nbp_rcvbuf = smb_tcprcvbuf; |
| 451 | vcp->vc_tdata = nbp; |
| 452 | return 0; |
| 453 | } |
| 454 | |
| 455 | static int |
| 456 | smb_nbst_done(struct smb_vc *vcp, struct thread *td) |
| 457 | { |
| 458 | struct nbpcb *nbp = vcp->vc_tdata; |
| 459 | |
| 460 | if (nbp == NULL) |
| 461 | return ENOTCONN; |
| 462 | smb_nbst_disconnect(vcp, td); |
| 463 | if (nbp->nbp_laddr) |
| 464 | free(nbp->nbp_laddr, M_SONAME); |
| 465 | if (nbp->nbp_paddr) |
| 466 | free(nbp->nbp_paddr, M_SONAME); |
| 467 | free(nbp, M_NBDATA); |
| 468 | return 0; |
| 469 | } |
| 470 | |
| 471 | static int |
| 472 | smb_nbst_bind(struct smb_vc *vcp, struct sockaddr *sap, struct thread *td) |
| 473 | { |
| 474 | struct nbpcb *nbp = vcp->vc_tdata; |
| 475 | struct sockaddr_nb *snb; |
| 476 | int error, slen; |
| 477 | |
| 478 | NBDEBUG("\n"); |
| 479 | error = EINVAL; |
| 480 | do { |
| 481 | if (nbp->nbp_flags & NBF_LOCADDR) |
| 482 | break; |
| 483 | /* |
| 484 | * It is possible to create NETBIOS name in the kernel, |
| 485 | * but nothing prevents us to do it in the user space. |
| 486 | */ |
| 487 | if (sap == NULL) |
| 488 | break; |
| 489 | slen = sap->sa_len; |
| 490 | if (slen < NB_MINSALEN) |
| 491 | break; |
| 492 | snb = (struct sockaddr_nb*)dup_sockaddr(sap); |
| 493 | if (snb == NULL) { |
| 494 | error = ENOMEM; |
| 495 | break; |
| 496 | } |
| 497 | nbp->nbp_laddr = snb; |
| 498 | nbp->nbp_flags |= NBF_LOCADDR; |
| 499 | error = 0; |
| 500 | } while(0); |
| 501 | return error; |
| 502 | } |
| 503 | |
| 504 | static int |
| 505 | smb_nbst_connect(struct smb_vc *vcp, struct sockaddr *sap, struct thread *td) |
| 506 | { |
| 507 | struct nbpcb *nbp = vcp->vc_tdata; |
| 508 | struct sockaddr_in sin; |
| 509 | struct sockaddr_nb *snb; |
| 510 | struct timespec ts1, ts2; |
| 511 | int error, slen; |
| 512 | |
| 513 | NBDEBUG("\n"); |
| 514 | if (nbp->nbp_tso != NULL) |
| 515 | return EISCONN; |
| 516 | if (nbp->nbp_laddr == NULL) |
| 517 | return EINVAL; |
| 518 | slen = sap->sa_len; |
| 519 | if (slen < NB_MINSALEN) |
| 520 | return EINVAL; |
| 521 | if (nbp->nbp_paddr) { |
| 522 | free(nbp->nbp_paddr, M_SONAME); |
| 523 | nbp->nbp_paddr = NULL; |
| 524 | } |
| 525 | snb = (struct sockaddr_nb*)dup_sockaddr(sap); |
| 526 | if (snb == NULL) |
| 527 | return ENOMEM; |
| 528 | nbp->nbp_paddr = snb; |
| 529 | sin = snb->snb_addrin; |
| 530 | getnanotime(&ts1); |
| 531 | error = nb_connect_in(nbp, &sin, td); |
| 532 | if (error) |
| 533 | return error; |
| 534 | getnanotime(&ts2); |
| 535 | timespecsub(&ts2, &ts1); |
| 536 | if (ts2.tv_sec == 0 && ts2.tv_sec == 0) |
| 537 | ts2.tv_sec = 1; |
| 538 | nbp->nbp_timo = ts2; |
| 539 | timespecadd(&nbp->nbp_timo, &ts2); |
| 540 | timespecadd(&nbp->nbp_timo, &ts2); |
| 541 | timespecadd(&nbp->nbp_timo, &ts2); /* * 4 */ |
| 542 | error = nbssn_rq_request(nbp, td); |
| 543 | if (error) |
| 544 | smb_nbst_disconnect(vcp, td); |
| 545 | return error; |
| 546 | } |
| 547 | |
| 548 | static int |
| 549 | smb_nbst_disconnect(struct smb_vc *vcp, struct thread *td) |
| 550 | { |
| 551 | struct nbpcb *nbp = vcp->vc_tdata; |
| 552 | struct socket *so; |
| 553 | |
| 554 | if (nbp == NULL || nbp->nbp_tso == NULL) |
| 555 | return ENOTCONN; |
| 556 | if ((so = nbp->nbp_tso) != NULL) { |
| 557 | nbp->nbp_flags &= ~NBF_CONNECTED; |
| 558 | nbp->nbp_tso = (struct socket *)NULL; |
| 559 | soshutdown(so, 2); |
| 560 | soclose(so); |
| 561 | } |
| 562 | if (nbp->nbp_state != NBST_RETARGET) { |
| 563 | nbp->nbp_state = NBST_CLOSED; |
| 564 | } |
| 565 | return 0; |
| 566 | } |
| 567 | |
| 568 | static int |
| 569 | smb_nbst_send(struct smb_vc *vcp, struct mbuf *m0, struct thread *td) |
| 570 | { |
| 571 | struct nbpcb *nbp = vcp->vc_tdata; |
| 572 | int error; |
| 573 | |
| 574 | if (nbp->nbp_state != NBST_SESSION) { |
| 575 | error = ENOTCONN; |
| 576 | goto abort; |
| 577 | } |
| 578 | M_PREPEND(m0, 4, MB_TRYWAIT); |
| 579 | if (m0 == NULL) |
| 580 | return ENOBUFS; |
| 581 | nb_sethdr(m0, NB_SSN_MESSAGE, m_fixhdr(m0) - 4); |
| 582 | error = nb_sosend(nbp->nbp_tso, m0, 0, td); |
| 583 | return error; |
| 584 | abort: |
| 585 | if (m0) |
| 586 | m_freem(m0); |
| 587 | return error; |
| 588 | } |
| 589 | |
| 590 | |
| 591 | static int |
| 592 | smb_nbst_recv(struct smb_vc *vcp, struct mbuf **mpp, struct thread *td) |
| 593 | { |
| 594 | struct nbpcb *nbp = vcp->vc_tdata; |
| 595 | u_int8_t rpcode; |
| 596 | int error, rplen; |
| 597 | |
| 598 | nbp->nbp_flags |= NBF_RECVLOCK; |
| 599 | error = nbssn_recv(nbp, mpp, &rplen, &rpcode, td); |
| 600 | nbp->nbp_flags &= ~NBF_RECVLOCK; |
| 601 | return error; |
| 602 | } |
| 603 | |
| 604 | static void |
| 605 | smb_nbst_timo(struct smb_vc *vcp) |
| 606 | { |
| 607 | return; |
| 608 | } |
| 609 | |
| 610 | static void |
| 611 | smb_nbst_intr(struct smb_vc *vcp) |
| 612 | { |
| 613 | struct nbpcb *nbp = vcp->vc_tdata; |
| 614 | |
| 615 | if (nbp == NULL || nbp->nbp_tso == NULL) |
| 616 | return; |
| 617 | sorwakeup(nbp->nbp_tso); |
| 618 | sowwakeup(nbp->nbp_tso); |
| 619 | } |
| 620 | |
| 621 | static int |
| 622 | smb_nbst_getparam(struct smb_vc *vcp, int param, void *data) |
| 623 | { |
| 624 | struct nbpcb *nbp = vcp->vc_tdata; |
| 625 | |
| 626 | switch (param) { |
| 627 | case SMBTP_SNDSZ: |
| 628 | *(int*)data = nbp->nbp_sndbuf; |
| 629 | break; |
| 630 | case SMBTP_RCVSZ: |
| 631 | *(int*)data = nbp->nbp_rcvbuf; |
| 632 | break; |
| 633 | case SMBTP_TIMEOUT: |
| 634 | *(struct timespec*)data = nbp->nbp_timo; |
| 635 | break; |
| 636 | default: |
| 637 | return EINVAL; |
| 638 | } |
| 639 | return 0; |
| 640 | } |
| 641 | |
| 642 | static int |
| 643 | smb_nbst_setparam(struct smb_vc *vcp, int param, void *data) |
| 644 | { |
| 645 | struct nbpcb *nbp = vcp->vc_tdata; |
| 646 | |
| 647 | switch (param) { |
| 648 | case SMBTP_SELECTID: |
| 649 | nbp->nbp_selectid = data; |
| 650 | break; |
| 651 | default: |
| 652 | return EINVAL; |
| 653 | } |
| 654 | return 0; |
| 655 | } |
| 656 | |
| 657 | /* |
| 658 | * Check for fatal errors |
| 659 | */ |
| 660 | static int |
| 661 | smb_nbst_fatal(struct smb_vc *vcp, int error) |
| 662 | { |
| 663 | switch (error) { |
| 664 | case ENOTCONN: |
| 665 | case ENETRESET: |
| 666 | case ECONNABORTED: |
| 667 | return 1; |
| 668 | } |
| 669 | return 0; |
| 670 | } |
| 671 | |
| 672 | |
| 673 | struct smb_tran_desc smb_tran_nbtcp_desc = { |
| 674 | SMBT_NBTCP, |
| 675 | smb_nbst_create, smb_nbst_done, |
| 676 | smb_nbst_bind, smb_nbst_connect, smb_nbst_disconnect, |
| 677 | smb_nbst_send, smb_nbst_recv, |
| 678 | smb_nbst_timo, smb_nbst_intr, |
| 679 | smb_nbst_getparam, smb_nbst_setparam, |
| 680 | smb_nbst_fatal |
| 681 | }; |
| 682 | |