| 1 | /* $NetBSD: smb_trantcp.c,v 1.49 2015/05/22 22:05:32 rtr Exp $ */ |
| 2 | |
| 3 | /*- |
| 4 | * Copyright (c) 2008 The NetBSD Foundation, Inc. |
| 5 | * All rights reserved. |
| 6 | * |
| 7 | * Redistribution and use in source and binary forms, with or without |
| 8 | * modification, are permitted provided that the following conditions |
| 9 | * are met: |
| 10 | * 1. Redistributions of source code must retain the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer. |
| 12 | * 2. Redistributions in binary form must reproduce the above copyright |
| 13 | * notice, this list of conditions and the following disclaimer in the |
| 14 | * documentation and/or other materials provided with the distribution. |
| 15 | * |
| 16 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
| 17 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
| 18 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 19 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
| 20 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 21 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 22 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 23 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 24 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 25 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 26 | * POSSIBILITY OF SUCH DAMAGE. |
| 27 | */ |
| 28 | |
| 29 | /* |
| 30 | * Copyright (c) 2000-2001 Boris Popov |
| 31 | * All rights reserved. |
| 32 | * |
| 33 | * Redistribution and use in source and binary forms, with or without |
| 34 | * modification, are permitted provided that the following conditions |
| 35 | * are met: |
| 36 | * 1. Redistributions of source code must retain the above copyright |
| 37 | * notice, this list of conditions and the following disclaimer. |
| 38 | * 2. Redistributions in binary form must reproduce the above copyright |
| 39 | * notice, this list of conditions and the following disclaimer in the |
| 40 | * documentation and/or other materials provided with the distribution. |
| 41 | * 3. All advertising materials mentioning features or use of this software |
| 42 | * must display the following acknowledgement: |
| 43 | * This product includes software developed by Boris Popov. |
| 44 | * 4. Neither the name of the author nor the names of any co-contributors |
| 45 | * may be used to endorse or promote products derived from this software |
| 46 | * without specific prior written permission. |
| 47 | * |
| 48 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| 49 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 50 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 51 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| 52 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 53 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 54 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 55 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 56 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 57 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 58 | * SUCH DAMAGE. |
| 59 | * |
| 60 | * FreeBSD: src/sys/netsmb/smb_trantcp.c,v 1.17 2003/02/19 05:47:38 imp Exp |
| 61 | */ |
| 62 | |
| 63 | #include <sys/cdefs.h> |
| 64 | __KERNEL_RCSID(0, "$NetBSD: smb_trantcp.c,v 1.49 2015/05/22 22:05:32 rtr Exp $" ); |
| 65 | |
| 66 | #include <sys/param.h> |
| 67 | #include <sys/systm.h> |
| 68 | #include <sys/kernel.h> |
| 69 | #include <sys/kmem.h> |
| 70 | #include <sys/mbuf.h> |
| 71 | #include <sys/proc.h> |
| 72 | #include <sys/protosw.h> |
| 73 | #include <sys/socket.h> |
| 74 | #include <sys/socketvar.h> |
| 75 | #include <sys/poll.h> |
| 76 | #include <sys/uio.h> |
| 77 | #include <sys/select.h> |
| 78 | |
| 79 | #include <net/if.h> |
| 80 | #include <net/route.h> |
| 81 | |
| 82 | #include <netinet/in.h> |
| 83 | #include <netinet/tcp.h> |
| 84 | |
| 85 | #include <netsmb/mchain.h> |
| 86 | |
| 87 | #include <netsmb/netbios.h> |
| 88 | |
| 89 | #include <netsmb/smb.h> |
| 90 | #include <netsmb/smb_conn.h> |
| 91 | #include <netsmb/smb_tran.h> |
| 92 | #include <netsmb/smb_trantcp.h> |
| 93 | #include <netsmb/smb_subr.h> |
| 94 | |
| 95 | static int nb_tcpsndbuf = NB_SNDQ; |
| 96 | static int nb_tcprcvbuf = NB_RCVQ; |
| 97 | |
| 98 | #define nb_sosend(so,m,flags,l) (*(so)->so_send)(so, NULL, (struct uio *)0, \ |
| 99 | m, (struct mbuf *)0, flags, l) |
| 100 | |
| 101 | static int nbssn_recv(struct nbpcb *nbp, struct mbuf **mpp, int *lenp, |
| 102 | u_int8_t *rpcodep, bool firstwait, struct lwp *l); |
| 103 | static int smb_nbst_disconnect(struct smb_vc *vcp, struct lwp *l); |
| 104 | |
| 105 | static int |
| 106 | nb_setsockopt_int(struct socket *so, int level, int name, int val) |
| 107 | { |
| 108 | |
| 109 | return so_setsockopt(NULL, so, level, name, &val, sizeof(val)); /* XXX */ |
| 110 | } |
| 111 | |
| 112 | static int |
| 113 | nb_intr(struct nbpcb *nbp, struct lwp *l) |
| 114 | { |
| 115 | return 0; |
| 116 | } |
| 117 | |
| 118 | static void |
| 119 | nb_upcall(struct socket *so, void *arg, int events, int waitflag) |
| 120 | { |
| 121 | struct nbpcb *nbp = (void *)arg; |
| 122 | |
| 123 | if (arg == NULL || nbp->nbp_selectid == NULL) |
| 124 | return; |
| 125 | wakeup(nbp->nbp_selectid); |
| 126 | } |
| 127 | |
| 128 | static int |
| 129 | nb_sethdr(struct mbuf *m, u_int8_t type, u_int32_t len) |
| 130 | { |
| 131 | u_int32_t *p = mtod(m, u_int32_t *); |
| 132 | |
| 133 | *p = htonl((len & 0x1FFFF) | (type << 24)); |
| 134 | return 0; |
| 135 | } |
| 136 | |
| 137 | static int |
| 138 | nb_put_name(struct mbchain *mbp, struct sockaddr_nb *snb) |
| 139 | { |
| 140 | int error; |
| 141 | u_char seglen, *cp; |
| 142 | |
| 143 | cp = snb->snb_name; |
| 144 | if (*cp == 0) |
| 145 | return EINVAL; |
| 146 | NBDEBUG(("[%s]\n" , cp)); |
| 147 | for (;;) { |
| 148 | seglen = (*cp) + 1; |
| 149 | error = mb_put_mem(mbp, cp, seglen, MB_MSYSTEM); |
| 150 | if (error) |
| 151 | return error; |
| 152 | if (seglen == 1) |
| 153 | break; |
| 154 | cp += seglen; |
| 155 | } |
| 156 | return 0; |
| 157 | } |
| 158 | |
| 159 | static int |
| 160 | nb_connect_in(struct nbpcb *nbp, struct sockaddr_in *to, struct lwp *l) |
| 161 | { |
| 162 | struct socket *so; |
| 163 | int error; |
| 164 | |
| 165 | error = socreate(AF_INET, &so, SOCK_STREAM, IPPROTO_TCP, l, NULL); |
| 166 | if (error) |
| 167 | return error; |
| 168 | solock(so); |
| 169 | nbp->nbp_tso = so; |
| 170 | so->so_upcallarg = (void *)nbp; |
| 171 | so->so_upcall = nb_upcall; |
| 172 | so->so_rcv.sb_flags |= SB_UPCALL; |
| 173 | so->so_rcv.sb_flags &= ~SB_NOINTR; |
| 174 | so->so_snd.sb_flags &= ~SB_NOINTR; |
| 175 | so->so_rcv.sb_timeo = NB_RCVTIMEO * hz; |
| 176 | so->so_snd.sb_timeo = NB_RCVTIMEO * hz; |
| 177 | error = soreserve(so, nb_tcpsndbuf, nb_tcprcvbuf); |
| 178 | sounlock(so); |
| 179 | if (error) |
| 180 | goto bad; |
| 181 | nb_setsockopt_int(so, SOL_SOCKET, SO_KEEPALIVE, 1); |
| 182 | nb_setsockopt_int(so, IPPROTO_TCP, TCP_NODELAY, 1); |
| 183 | solock(so); |
| 184 | error = soconnect(so, (struct sockaddr *)to, l); |
| 185 | if (error) { |
| 186 | sounlock(so); |
| 187 | goto bad; |
| 188 | } |
| 189 | while ((so->so_state & SS_ISCONNECTING) && so->so_error == 0) { |
| 190 | sowait(so, false, 2 * hz); |
| 191 | if ((so->so_state & SS_ISCONNECTING) && so->so_error == 0 && |
| 192 | (error = nb_intr(nbp, l)) != 0) { |
| 193 | so->so_state &= ~SS_ISCONNECTING; |
| 194 | sounlock(so); |
| 195 | goto bad; |
| 196 | } |
| 197 | } |
| 198 | if (so->so_error) { |
| 199 | error = so->so_error; |
| 200 | so->so_error = 0; |
| 201 | sounlock(so); |
| 202 | goto bad; |
| 203 | } |
| 204 | sounlock(so); |
| 205 | return 0; |
| 206 | bad: |
| 207 | smb_nbst_disconnect(nbp->nbp_vc, l); |
| 208 | return error; |
| 209 | } |
| 210 | |
| 211 | static int |
| 212 | nbssn_rq_request(struct nbpcb *nbp, struct lwp *l) |
| 213 | { |
| 214 | struct mbchain mb, *mbp = &mb; |
| 215 | struct mdchain md, *mdp = &md; |
| 216 | struct mbuf *m0; |
| 217 | struct sockaddr_in sin; |
| 218 | u_short port; |
| 219 | u_int8_t rpcode; |
| 220 | int error, rplen; |
| 221 | |
| 222 | error = mb_init(mbp); |
| 223 | if (error) |
| 224 | return error; |
| 225 | mb_put_uint32le(mbp, 0); |
| 226 | (void) nb_put_name(mbp, nbp->nbp_paddr); |
| 227 | (void) nb_put_name(mbp, nbp->nbp_laddr); |
| 228 | nb_sethdr(mbp->mb_top, NB_SSN_REQUEST, mb_fixhdr(mbp) - 4); |
| 229 | error = nb_sosend(nbp->nbp_tso, mbp->mb_top, 0, l); |
| 230 | if (!error) { |
| 231 | nbp->nbp_state = NBST_RQSENT; |
| 232 | } |
| 233 | mb_detach(mbp); |
| 234 | mb_done(mbp); |
| 235 | if (error) |
| 236 | return error; |
| 237 | error = nbssn_recv(nbp, &m0, &rplen, &rpcode, true, l); |
| 238 | if (error) { |
| 239 | if (error == EWOULDBLOCK) { /* Timeout */ |
| 240 | NBDEBUG(("initial request timeout\n" )); |
| 241 | return ETIMEDOUT; |
| 242 | } |
| 243 | NBDEBUG(("recv() error %d\n" , error)); |
| 244 | return error; |
| 245 | } |
| 246 | /* |
| 247 | * Process NETBIOS reply |
| 248 | */ |
| 249 | if (m0) |
| 250 | md_initm(mdp, m0); |
| 251 | error = 0; |
| 252 | do { |
| 253 | if (rpcode == NB_SSN_POSRESP) { |
| 254 | nbp->nbp_state = NBST_SESSION; |
| 255 | nbp->nbp_flags |= NBF_CONNECTED; |
| 256 | break; |
| 257 | } |
| 258 | if (rpcode != NB_SSN_RTGRESP) { |
| 259 | error = ECONNABORTED; |
| 260 | break; |
| 261 | } |
| 262 | if (rplen != 6) { |
| 263 | error = ECONNABORTED; |
| 264 | break; |
| 265 | } |
| 266 | md_get_mem(mdp, (void *)&sin.sin_addr, 4, MB_MSYSTEM); |
| 267 | md_get_uint16(mdp, &port); |
| 268 | sin.sin_port = port; |
| 269 | nbp->nbp_state = NBST_RETARGET; |
| 270 | smb_nbst_disconnect(nbp->nbp_vc, l); |
| 271 | error = nb_connect_in(nbp, &sin, l); |
| 272 | if (!error) |
| 273 | error = nbssn_rq_request(nbp, l); |
| 274 | if (error) { |
| 275 | smb_nbst_disconnect(nbp->nbp_vc, l); |
| 276 | break; |
| 277 | } |
| 278 | } while(0); |
| 279 | if (m0) |
| 280 | md_done(mdp); |
| 281 | return error; |
| 282 | } |
| 283 | |
| 284 | static int |
| 285 | nbssn_recvhdr(struct nbpcb *nbp, int *lenp, |
| 286 | u_int8_t *rpcodep, int flags, struct lwp *l) |
| 287 | { |
| 288 | struct socket *so = nbp->nbp_tso; |
| 289 | struct uio auio; |
| 290 | struct iovec aio; |
| 291 | u_int32_t len; |
| 292 | int error; |
| 293 | |
| 294 | aio.iov_base = (void *)&len; |
| 295 | aio.iov_len = sizeof(len); |
| 296 | auio.uio_iov = &aio; |
| 297 | auio.uio_iovcnt = 1; |
| 298 | auio.uio_rw = UIO_READ; |
| 299 | auio.uio_offset = 0; |
| 300 | auio.uio_resid = sizeof(len); |
| 301 | UIO_SETUP_SYSSPACE(&auio); |
| 302 | error = (*so->so_receive)(so, NULL, &auio, NULL, NULL, &flags); |
| 303 | if (error) |
| 304 | return error; |
| 305 | if (auio.uio_resid > 0) { |
| 306 | SMBSDEBUG(("short reply\n" )); |
| 307 | return EPIPE; |
| 308 | } |
| 309 | len = ntohl(len); |
| 310 | *rpcodep = (len >> 24) & 0xFF; |
| 311 | len &= 0x1ffff; |
| 312 | if (len > SMB_MAXPKTLEN) { |
| 313 | SMBERROR(("packet too long (%d)\n" , len)); |
| 314 | return EFBIG; |
| 315 | } |
| 316 | *lenp = len; |
| 317 | return 0; |
| 318 | } |
| 319 | |
| 320 | static int |
| 321 | nbssn_recv(struct nbpcb *nbp, struct mbuf **mpp, int *lenp, |
| 322 | u_int8_t *rpcodep, bool dowait, struct lwp *l) |
| 323 | { |
| 324 | struct socket *so = nbp->nbp_tso; |
| 325 | struct uio auio; |
| 326 | struct mbuf *m, *tm, *im; |
| 327 | u_int8_t rpcode; |
| 328 | int len, resid; |
| 329 | int error, rcvflg; |
| 330 | |
| 331 | len = 0; /* XXX gcc */ |
| 332 | rpcode = 0; /* XXX gcc */ |
| 333 | |
| 334 | if (so == NULL) |
| 335 | return ENOTCONN; |
| 336 | |
| 337 | if (mpp) |
| 338 | *mpp = NULL; |
| 339 | m = NULL; |
| 340 | for(;; dowait = false) { |
| 341 | /* |
| 342 | * Poll for a response header. |
| 343 | * If we don't have one waiting, return. |
| 344 | */ |
| 345 | error = nbssn_recvhdr(nbp, &len, &rpcode, |
| 346 | dowait ? 0 : MSG_DONTWAIT, l); |
| 347 | if (so->so_state & |
| 348 | (SS_ISDISCONNECTING | SS_ISDISCONNECTED | SS_CANTRCVMORE)) { |
| 349 | nbp->nbp_state = NBST_CLOSED; |
| 350 | NBDEBUG(("session closed by peer\n" )); |
| 351 | return ECONNRESET; |
| 352 | } |
| 353 | if (error) |
| 354 | return error; |
| 355 | if (len == 0 && nbp->nbp_state != NBST_SESSION) |
| 356 | break; |
| 357 | /* no data, try again */ |
| 358 | if (rpcode == NB_SSN_KEEPALIVE) |
| 359 | continue; |
| 360 | |
| 361 | /* |
| 362 | * Loop, blocking, for data following the response header. |
| 363 | * |
| 364 | * Note that we can't simply block here with MSG_WAITALL for the |
| 365 | * entire response size, as it may be larger than the TCP |
| 366 | * slow-start window that the sender employs. This will result |
| 367 | * in the sender stalling until the delayed ACK is sent, then |
| 368 | * resuming slow-start, resulting in very poor performance. |
| 369 | * |
| 370 | * Instead, we never request more than NB_SORECEIVE_CHUNK |
| 371 | * bytes at a time, resulting in an ack being pushed by |
| 372 | * the TCP code at the completion of each call. |
| 373 | */ |
| 374 | resid = len; |
| 375 | while (resid > 0) { |
| 376 | tm = NULL; |
| 377 | rcvflg = MSG_WAITALL; |
| 378 | memset(&auio, 0, sizeof(auio)); |
| 379 | auio.uio_resid = min(resid, NB_SORECEIVE_CHUNK); |
| 380 | /* not need to setup uio_vmspace */ |
| 381 | resid -= auio.uio_resid; |
| 382 | /* |
| 383 | * Spin until we have collected everything in |
| 384 | * this chunk. |
| 385 | */ |
| 386 | do { |
| 387 | rcvflg = MSG_WAITALL; |
| 388 | error = (*so->so_receive)(so, NULL, &auio, &tm, |
| 389 | NULL, &rcvflg); |
| 390 | } while (error == EWOULDBLOCK || error == EINTR || |
| 391 | error == ERESTART); |
| 392 | if (error) |
| 393 | goto out; |
| 394 | /* short return guarantees unhappiness */ |
| 395 | if (auio.uio_resid > 0) { |
| 396 | SMBERROR(("packet is shorter than expected\n" )); |
| 397 | error = EPIPE; |
| 398 | goto out; |
| 399 | } |
| 400 | /* append received chunk to previous chunk(s) */ |
| 401 | if (m == NULL) { |
| 402 | m = tm; |
| 403 | } else { |
| 404 | /* |
| 405 | * Just glue the new chain on the end. |
| 406 | * Consumer will pullup as required. |
| 407 | */ |
| 408 | for (im = m; im->m_next != NULL; im = im->m_next) |
| 409 | ; |
| 410 | im->m_next = tm; |
| 411 | } |
| 412 | } |
| 413 | /* got a session/message packet? */ |
| 414 | if (nbp->nbp_state == NBST_SESSION && |
| 415 | rpcode == NB_SSN_MESSAGE) |
| 416 | break; |
| 417 | /* drop packet and try for another */ |
| 418 | NBDEBUG(("non-session packet %x\n" , rpcode)); |
| 419 | if (m) { |
| 420 | m_freem(m); |
| 421 | m = NULL; |
| 422 | } |
| 423 | } |
| 424 | |
| 425 | out: |
| 426 | if (error) { |
| 427 | if (m) |
| 428 | m_freem(m); |
| 429 | return error; |
| 430 | } |
| 431 | if (mpp) |
| 432 | *mpp = m; |
| 433 | else |
| 434 | m_freem(m); |
| 435 | *lenp = len; |
| 436 | *rpcodep = rpcode; |
| 437 | return 0; |
| 438 | } |
| 439 | |
| 440 | /* |
| 441 | * SMB transport interface |
| 442 | */ |
| 443 | static int |
| 444 | smb_nbst_create(struct smb_vc *vcp, struct lwp *l) |
| 445 | { |
| 446 | struct nbpcb *nbp; |
| 447 | |
| 448 | nbp = kmem_zalloc(sizeof(*nbp), KM_SLEEP); |
| 449 | nbp->nbp_state = NBST_CLOSED; |
| 450 | nbp->nbp_vc = vcp; |
| 451 | vcp->vc_tdata = nbp; |
| 452 | return 0; |
| 453 | } |
| 454 | |
| 455 | static int |
| 456 | smb_nbst_done(struct smb_vc *vcp, struct lwp *l) |
| 457 | { |
| 458 | struct nbpcb *nbp = vcp->vc_tdata; |
| 459 | |
| 460 | if (nbp == NULL) |
| 461 | return ENOTCONN; |
| 462 | smb_nbst_disconnect(vcp, l); |
| 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 | kmem_free(nbp, sizeof(*nbp)); |
| 468 | return 0; |
| 469 | } |
| 470 | |
| 471 | static int |
| 472 | smb_nbst_bind(struct smb_vc *vcp, struct sockaddr *sap, struct lwp *l) |
| 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, 1); |
| 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 lwp *l) |
| 506 | { |
| 507 | struct nbpcb *nbp = vcp->vc_tdata; |
| 508 | struct sockaddr_in sin; |
| 509 | struct sockaddr_nb *snb; |
| 510 | int error, slen; |
| 511 | |
| 512 | NBDEBUG(("\n" )); |
| 513 | if (nbp->nbp_tso != NULL) |
| 514 | return EISCONN; |
| 515 | if (nbp->nbp_laddr == NULL) |
| 516 | return EINVAL; |
| 517 | slen = sap->sa_len; |
| 518 | if (slen < NB_MINSALEN) |
| 519 | return EINVAL; |
| 520 | if (nbp->nbp_paddr) { |
| 521 | free(nbp->nbp_paddr, M_SONAME); |
| 522 | nbp->nbp_paddr = NULL; |
| 523 | } |
| 524 | snb = (struct sockaddr_nb*)dup_sockaddr(sap, 1); |
| 525 | if (snb == NULL) |
| 526 | return ENOMEM; |
| 527 | nbp->nbp_paddr = snb; |
| 528 | sin = snb->snb_addrin; |
| 529 | error = nb_connect_in(nbp, &sin, l); |
| 530 | if (error) |
| 531 | return error; |
| 532 | error = nbssn_rq_request(nbp, l); |
| 533 | if (error) |
| 534 | smb_nbst_disconnect(vcp, l); |
| 535 | return error; |
| 536 | } |
| 537 | |
| 538 | static int |
| 539 | smb_nbst_disconnect(struct smb_vc *vcp, struct lwp *l) |
| 540 | { |
| 541 | struct nbpcb *nbp = vcp->vc_tdata; |
| 542 | struct socket *so; |
| 543 | |
| 544 | if (nbp == NULL || nbp->nbp_tso == NULL) |
| 545 | return ENOTCONN; |
| 546 | if ((so = nbp->nbp_tso) != NULL) { |
| 547 | nbp->nbp_flags &= ~NBF_CONNECTED; |
| 548 | nbp->nbp_tso = NULL; |
| 549 | solock(so); |
| 550 | soshutdown(so, 2); |
| 551 | sounlock(so); |
| 552 | soclose(so); |
| 553 | } |
| 554 | if (nbp->nbp_state != NBST_RETARGET) { |
| 555 | nbp->nbp_state = NBST_CLOSED; |
| 556 | } |
| 557 | return 0; |
| 558 | } |
| 559 | |
| 560 | static int |
| 561 | smb_nbst_send(struct smb_vc *vcp, struct mbuf *m0, struct lwp *l) |
| 562 | { |
| 563 | struct nbpcb *nbp = vcp->vc_tdata; |
| 564 | int error; |
| 565 | |
| 566 | if (nbp->nbp_state != NBST_SESSION) { |
| 567 | error = ENOTCONN; |
| 568 | goto abort; |
| 569 | } |
| 570 | M_PREPEND(m0, 4, M_WAITOK); |
| 571 | if (m0 == NULL) |
| 572 | return ENOBUFS; |
| 573 | nb_sethdr(m0, NB_SSN_MESSAGE, m_fixhdr(m0) - 4); |
| 574 | error = nb_sosend(nbp->nbp_tso, m0, 0, l); |
| 575 | return error; |
| 576 | abort: |
| 577 | if (m0) |
| 578 | m_freem(m0); |
| 579 | return error; |
| 580 | } |
| 581 | |
| 582 | |
| 583 | static int |
| 584 | smb_nbst_recv(struct smb_vc *vcp, struct mbuf **mpp, struct lwp *l) |
| 585 | { |
| 586 | struct nbpcb *nbp = vcp->vc_tdata; |
| 587 | u_int8_t rpcode; |
| 588 | int error, rplen; |
| 589 | |
| 590 | nbp->nbp_flags |= NBF_RECVLOCK; |
| 591 | error = nbssn_recv(nbp, mpp, &rplen, &rpcode, false, l); |
| 592 | nbp->nbp_flags &= ~NBF_RECVLOCK; |
| 593 | return error; |
| 594 | } |
| 595 | |
| 596 | static void |
| 597 | smb_nbst_timo(struct smb_vc *vcp) |
| 598 | { |
| 599 | |
| 600 | /* Nothing */ |
| 601 | } |
| 602 | |
| 603 | static void |
| 604 | smb_nbst_intr(struct smb_vc *vcp) |
| 605 | { |
| 606 | struct nbpcb *nbp = vcp->vc_tdata; |
| 607 | struct socket *so; |
| 608 | |
| 609 | if (nbp == NULL || (so = nbp->nbp_tso) == NULL) |
| 610 | return; |
| 611 | |
| 612 | solock(so); |
| 613 | sorwakeup(so); |
| 614 | sowwakeup(so); |
| 615 | sounlock(so); |
| 616 | } |
| 617 | |
| 618 | static int |
| 619 | smb_nbst_getparam(struct smb_vc *vcp, int param, void *data) |
| 620 | { |
| 621 | struct timeval *tvp; |
| 622 | switch (param) { |
| 623 | case SMBTP_SNDSZ: |
| 624 | *(int*)data = nb_tcpsndbuf; |
| 625 | break; |
| 626 | case SMBTP_RCVSZ: |
| 627 | *(int*)data = nb_tcprcvbuf; |
| 628 | break; |
| 629 | case SMBTP_TIMEOUT: |
| 630 | tvp = (struct timeval *)data; |
| 631 | tvp->tv_sec = NB_RCVTIMEO; |
| 632 | tvp->tv_usec = 0; |
| 633 | break; |
| 634 | default: |
| 635 | return EINVAL; |
| 636 | } |
| 637 | return 0; |
| 638 | } |
| 639 | |
| 640 | static int |
| 641 | smb_nbst_setparam(struct smb_vc *vcp, int param, void *data) |
| 642 | { |
| 643 | struct nbpcb *nbp = vcp->vc_tdata; |
| 644 | |
| 645 | switch (param) { |
| 646 | case SMBTP_SELECTID: |
| 647 | nbp->nbp_selectid = data; |
| 648 | break; |
| 649 | default: |
| 650 | return EINVAL; |
| 651 | } |
| 652 | return 0; |
| 653 | } |
| 654 | |
| 655 | /* |
| 656 | * Check for fatal errors |
| 657 | */ |
| 658 | static int |
| 659 | smb_nbst_fatal(struct smb_vc *vcp, int error) |
| 660 | { |
| 661 | switch (error) { |
| 662 | case ENOTCONN: |
| 663 | case ENETRESET: |
| 664 | case ECONNABORTED: |
| 665 | return 1; |
| 666 | } |
| 667 | return 0; |
| 668 | } |
| 669 | |
| 670 | |
| 671 | struct smb_tran_desc smb_tran_nbtcp_desc = { |
| 672 | SMBT_NBTCP, |
| 673 | smb_nbst_create, smb_nbst_done, |
| 674 | smb_nbst_bind, smb_nbst_connect, smb_nbst_disconnect, |
| 675 | smb_nbst_send, smb_nbst_recv, |
| 676 | smb_nbst_timo, smb_nbst_intr, |
| 677 | smb_nbst_getparam, smb_nbst_setparam, |
| 678 | smb_nbst_fatal, |
| 679 | { NULL, NULL }, |
| 680 | }; |
| 681 | |