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_rq.c,v 1.1.2.2 2002/04/23 03:45:01 bp Exp $ 33 */ 34 #include <sys/param.h> 35 #include <sys/systm.h> 36 #include <sys/kernel.h> 37 #include <sys/malloc.h> 38 #include <sys/proc.h> 39 #include <sys/lock.h> 40 #include <sys/sysctl.h> 41 #include <sys/socket.h> 42 #include <sys/socketvar.h> 43 #include <sys/mbuf.h> 44 45 #include "smb.h" 46 #include "smb_conn.h" 47 #include "smb_rq.h" 48 #include "smb_subr.h" 49 #include "smb_tran.h" 50 51 MALLOC_DEFINE(M_SMBRQ, "SMBRQ", "SMB request"); 52 53 MODULE_DEPEND(netsmb, libmchain, 1, 1, 1); 54 55 static int smb_rq_reply(struct smb_rq *rqp); 56 static int smb_rq_enqueue(struct smb_rq *rqp); 57 static int smb_rq_getenv(struct smb_connobj *layer, 58 struct smb_vc **vcpp, struct smb_share **sspp); 59 static int smb_rq_new(struct smb_rq *rqp, u_char cmd); 60 static int smb_t2_reply(struct smb_t2rq *t2p); 61 62 int 63 smb_rq_alloc(struct smb_connobj *layer, u_char cmd, struct smb_cred *scred, 64 struct smb_rq **rqpp) 65 { 66 struct smb_rq *rqp; 67 int error; 68 69 rqp = kmalloc(sizeof(*rqp), M_SMBRQ, M_WAITOK); 70 error = smb_rq_init(rqp, layer, cmd, scred); 71 rqp->sr_flags |= SMBR_ALLOCED; 72 if (error) { 73 smb_rq_done(rqp); 74 return error; 75 } 76 *rqpp = rqp; 77 return 0; 78 } 79 80 static char tzero[12]; 81 82 int 83 smb_rq_init(struct smb_rq *rqp, struct smb_connobj *layer, u_char cmd, 84 struct smb_cred *scred) 85 { 86 int error; 87 88 bzero(rqp, sizeof(*rqp)); 89 smb_sl_init(&rqp->sr_slock, "srslock"); 90 error = smb_rq_getenv(layer, &rqp->sr_vc, &rqp->sr_share); 91 if (error) 92 return error; 93 error = smb_vc_access(rqp->sr_vc, scred, SMBM_EXEC); 94 if (error) 95 return error; 96 if (rqp->sr_share) { 97 error = smb_share_access(rqp->sr_share, scred, SMBM_EXEC); 98 if (error) 99 return error; 100 } 101 rqp->sr_cred = scred; 102 rqp->sr_mid = smb_vc_nextmid(rqp->sr_vc); 103 return smb_rq_new(rqp, cmd); 104 } 105 106 static int 107 smb_rq_new(struct smb_rq *rqp, u_char cmd) 108 { 109 struct smb_vc *vcp = rqp->sr_vc; 110 struct mbchain *mbp = &rqp->sr_rq; 111 int error; 112 u_int16_t flags2; 113 114 rqp->sr_sendcnt = 0; 115 mb_done(mbp); 116 md_done(&rqp->sr_rp); 117 error = mb_init(mbp); 118 if (error) 119 return error; 120 mb_put_mem(mbp, SMB_SIGNATURE, SMB_SIGLEN, MB_MSYSTEM); 121 mb_put_uint8(mbp, cmd); 122 mb_put_uint32le(mbp, 0); /* DosError */ 123 mb_put_uint8(mbp, vcp->vc_hflags); 124 flags2 = vcp->vc_hflags2; 125 if (cmd == SMB_COM_TRANSACTION || cmd == SMB_COM_TRANSACTION_SECONDARY) 126 flags2 &= ~SMB_FLAGS2_UNICODE; 127 if (cmd == SMB_COM_NEGOTIATE) 128 flags2 &= ~SMB_FLAGS2_SECURITY_SIGNATURE; 129 mb_put_uint16le(mbp, flags2); 130 if ((flags2 & SMB_FLAGS2_SECURITY_SIGNATURE) == 0) { 131 mb_put_mem(mbp, tzero, 12, MB_MSYSTEM); 132 rqp->sr_rqsig = NULL; 133 } else { 134 mb_put_uint16le(mbp, 0 /*scred->sc_p->p_pid >> 16*/); 135 rqp->sr_rqsig = (u_int8_t *)mb_reserve(mbp, 8); 136 mb_put_uint16le(mbp, 0); 137 } 138 rqp->sr_rqtid = (u_int16_t*)mb_reserve(mbp, sizeof(u_int16_t)); 139 mb_put_uint16le(mbp, 1 /*scred->sc_p->p_pid & 0xffff*/); 140 rqp->sr_rquid = (u_int16_t*)mb_reserve(mbp, sizeof(u_int16_t)); 141 mb_put_uint16le(mbp, rqp->sr_mid); 142 return 0; 143 } 144 145 void 146 smb_rq_done(struct smb_rq *rqp) 147 { 148 mb_done(&rqp->sr_rq); 149 md_done(&rqp->sr_rp); 150 smb_sl_destroy(&rqp->sr_slock); 151 if (rqp->sr_flags & SMBR_ALLOCED) 152 kfree(rqp, M_SMBRQ); 153 } 154 155 /* 156 * Simple request-reply exchange 157 */ 158 int 159 smb_rq_simple(struct smb_rq *rqp) 160 { 161 struct smb_vc *vcp = rqp->sr_vc; 162 int error = EINVAL, i; 163 164 for (i = 0; i < SMB_MAXRCN; i++) { 165 rqp->sr_flags &= ~SMBR_RESTART; 166 rqp->sr_timo = vcp->vc_timo; 167 rqp->sr_state = SMBRQ_NOTSENT; 168 error = smb_rq_enqueue(rqp); 169 if (error) 170 return error; 171 error = smb_rq_reply(rqp); 172 if (error == 0) 173 break; 174 if ((rqp->sr_flags & (SMBR_RESTART | SMBR_NORESTART)) != SMBR_RESTART) 175 break; 176 } 177 return error; 178 } 179 180 static int 181 smb_rq_enqueue(struct smb_rq *rqp) 182 { 183 struct smb_share *ssp = rqp->sr_share; 184 int error; 185 186 if (ssp == NULL || rqp->sr_cred == &rqp->sr_vc->vc_iod->iod_scred) { 187 return smb_iod_addrq(rqp); 188 } 189 for (;;) { 190 SMBS_ST_LOCK(ssp); 191 if (ssp->ss_flags & SMBS_RECONNECTING) { 192 smb_sleep(&ssp->ss_vcgenid, SMBS_ST_INTERLOCK(ssp), 193 PDROP, "90trcn", hz); 194 if (smb_proc_intr(rqp->sr_cred->scr_td)) 195 return EINTR; 196 continue; 197 } 198 if (smb_share_valid(ssp) || (ssp->ss_flags & SMBS_CONNECTED) == 0) { 199 SMBS_ST_UNLOCK(ssp); 200 } else { 201 SMBS_ST_UNLOCK(ssp); 202 error = smb_iod_request(rqp->sr_vc->vc_iod, 203 SMBIOD_EV_TREECONNECT | SMBIOD_EV_SYNC, ssp); 204 if (error) 205 return error; 206 } 207 error = smb_iod_addrq(rqp); 208 if (error != EXDEV) 209 break; 210 } 211 return error; 212 } 213 214 void 215 smb_rq_wstart(struct smb_rq *rqp) 216 { 217 rqp->sr_wcount = mb_reserve(&rqp->sr_rq, sizeof(u_int8_t)); 218 rqp->sr_rq.mb_count = 0; 219 } 220 221 void 222 smb_rq_wend(struct smb_rq *rqp) 223 { 224 if (rqp->sr_wcount == NULL) { 225 SMBERROR("no wcount\n"); /* actually panic */ 226 return; 227 } 228 if (rqp->sr_rq.mb_count & 1) 229 SMBERROR("odd word count\n"); 230 *rqp->sr_wcount = rqp->sr_rq.mb_count / 2; 231 } 232 233 void 234 smb_rq_bstart(struct smb_rq *rqp) 235 { 236 rqp->sr_bcount = (u_short*)mb_reserve(&rqp->sr_rq, sizeof(u_short)); 237 rqp->sr_rq.mb_count = 0; 238 } 239 240 void 241 smb_rq_bend(struct smb_rq *rqp) 242 { 243 int bcnt; 244 245 if (rqp->sr_bcount == NULL) { 246 SMBERROR("no bcount\n"); /* actually panic */ 247 return; 248 } 249 bcnt = rqp->sr_rq.mb_count; 250 if (bcnt > 0xffff) 251 SMBERROR("byte count too large (%d)\n", bcnt); 252 *rqp->sr_bcount = bcnt; 253 } 254 255 int 256 smb_rq_intr(struct smb_rq *rqp) 257 { 258 struct thread *td = rqp->sr_cred->scr_td; 259 260 if (rqp->sr_flags & SMBR_INTR) 261 return EINTR; 262 return smb_proc_intr(td); 263 } 264 265 int 266 smb_rq_getrequest(struct smb_rq *rqp, struct mbchain **mbpp) 267 { 268 *mbpp = &rqp->sr_rq; 269 return 0; 270 } 271 272 int 273 smb_rq_getreply(struct smb_rq *rqp, struct mdchain **mbpp) 274 { 275 *mbpp = &rqp->sr_rp; 276 return 0; 277 } 278 279 static int 280 smb_rq_getenv(struct smb_connobj *layer, 281 struct smb_vc **vcpp, struct smb_share **sspp) 282 { 283 struct smb_vc *vcp = NULL; 284 struct smb_share *ssp = NULL; 285 struct smb_connobj *cp; 286 int error = 0; 287 288 switch (layer->co_level) { 289 case SMBL_VC: 290 vcp = CPTOVC(layer); 291 if (layer->co_parent == NULL) { 292 SMBERROR("zombie VC %s\n", vcp->vc_srvname); 293 error = EINVAL; 294 break; 295 } 296 break; 297 case SMBL_SHARE: 298 ssp = CPTOSS(layer); 299 cp = layer->co_parent; 300 if (cp == NULL) { 301 SMBERROR("zombie share %s\n", ssp->ss_name); 302 error = EINVAL; 303 break; 304 } 305 error = smb_rq_getenv(cp, &vcp, NULL); 306 if (error) 307 break; 308 break; 309 default: 310 SMBERROR("invalid layer %d passed\n", layer->co_level); 311 error = EINVAL; 312 } 313 if (vcpp) 314 *vcpp = vcp; 315 if (sspp) 316 *sspp = ssp; 317 return error; 318 } 319 320 /* 321 * Wait for reply on the request 322 */ 323 static int 324 smb_rq_reply(struct smb_rq *rqp) 325 { 326 struct mdchain *mdp = &rqp->sr_rp; 327 u_int32_t tdw; 328 u_int8_t tb; 329 int error, rperror = 0; 330 331 error = smb_iod_waitrq(rqp); 332 if (error) 333 return error; 334 error = md_get_uint32(mdp, &tdw); 335 if (error) 336 return error; 337 error = md_get_uint8(mdp, &tb); 338 if (rqp->sr_vc->vc_hflags2 & SMB_FLAGS2_ERR_STATUS) { 339 error = md_get_uint32le(mdp, &rqp->sr_error); 340 } else { 341 error = md_get_uint8(mdp, &rqp->sr_errclass); 342 error = md_get_uint8(mdp, &tb); 343 error = md_get_uint16le(mdp, &rqp->sr_serror); 344 if (!error) 345 rperror = smb_maperror(rqp->sr_errclass, rqp->sr_serror); 346 } 347 error = md_get_uint8(mdp, &rqp->sr_rpflags); 348 error = md_get_uint16le(mdp, &rqp->sr_rpflags2); 349 350 error = md_get_uint32(mdp, &tdw); 351 error = md_get_uint32(mdp, &tdw); 352 error = md_get_uint32(mdp, &tdw); 353 354 error = md_get_uint16le(mdp, &rqp->sr_rptid); 355 error = md_get_uint16le(mdp, &rqp->sr_rppid); 356 error = md_get_uint16le(mdp, &rqp->sr_rpuid); 357 error = md_get_uint16le(mdp, &rqp->sr_rpmid); 358 359 if (error == 0 && 360 (rqp->sr_vc->vc_hflags2 & SMB_FLAGS2_SECURITY_SIGNATURE)) 361 error = smb_rq_verify(rqp); 362 363 SMBSDEBUG("M:%04x, P:%04x, U:%04x, T:%04x, E: %d:%d\n", 364 rqp->sr_rpmid, rqp->sr_rppid, rqp->sr_rpuid, rqp->sr_rptid, 365 rqp->sr_errclass, rqp->sr_serror); 366 return error ? error : rperror; 367 } 368 369 370 #define ALIGN4(a) (((a) + 3) & ~3) 371 372 /* 373 * TRANS2 request implementation 374 */ 375 int 376 smb_t2_alloc(struct smb_connobj *layer, u_short setup, struct smb_cred *scred, 377 struct smb_t2rq **t2pp) 378 { 379 struct smb_t2rq *t2p; 380 int error; 381 382 t2p = kmalloc(sizeof(*t2p), M_SMBRQ, M_WAITOK); 383 error = smb_t2_init(t2p, layer, setup, scred); 384 t2p->t2_flags |= SMBT2_ALLOCED; 385 if (error) { 386 smb_t2_done(t2p); 387 return error; 388 } 389 *t2pp = t2p; 390 return 0; 391 } 392 393 int 394 smb_t2_init(struct smb_t2rq *t2p, struct smb_connobj *source, u_short setup, 395 struct smb_cred *scred) 396 { 397 int error; 398 399 bzero(t2p, sizeof(*t2p)); 400 t2p->t2_source = source; 401 t2p->t2_setupcount = 1; 402 t2p->t2_setupdata = t2p->t2_setup; 403 t2p->t2_setup[0] = setup; 404 t2p->t2_fid = 0xffff; 405 t2p->t2_cred = scred; 406 error = smb_rq_getenv(source, &t2p->t2_vc, NULL); 407 if (error) 408 return error; 409 return 0; 410 } 411 412 void 413 smb_t2_done(struct smb_t2rq *t2p) 414 { 415 mb_done(&t2p->t2_tparam); 416 mb_done(&t2p->t2_tdata); 417 md_done(&t2p->t2_rparam); 418 md_done(&t2p->t2_rdata); 419 if (t2p->t2_flags & SMBT2_ALLOCED) 420 kfree(t2p, M_SMBRQ); 421 } 422 423 static int 424 smb_t2_placedata(struct mbuf *mtop, u_int16_t offset, u_int16_t count, 425 struct mdchain *mdp) 426 { 427 struct mbuf *m, *m0; 428 int len; 429 430 m0 = m_split(mtop, offset, M_WAITOK); 431 if (m0 == NULL) 432 return EBADRPC; 433 for(len = 0, m = m0; m->m_next; m = m->m_next) 434 len += m->m_len; 435 len += m->m_len; 436 m->m_len -= len - count; 437 if (mdp->md_top == NULL) { 438 md_initm(mdp, m0); 439 } else 440 m_cat(mdp->md_top, m0); 441 return 0; 442 } 443 444 static int 445 smb_t2_reply(struct smb_t2rq *t2p) 446 { 447 struct mdchain *mdp; 448 struct smb_rq *rqp = t2p->t2_rq; 449 int error, totpgot, totdgot; 450 u_int16_t totpcount, totdcount, pcount, poff, doff, pdisp, ddisp; 451 u_int16_t tmp, bc, dcount; 452 u_int8_t wc; 453 454 error = smb_rq_reply(rqp); 455 if (error) 456 return error; 457 if ((t2p->t2_flags & SMBT2_ALLSENT) == 0) { 458 /* 459 * this is an interim response, ignore it. 460 */ 461 SMBRQ_SLOCK(rqp); 462 md_next_record(&rqp->sr_rp); 463 SMBRQ_SUNLOCK(rqp); 464 return 0; 465 } 466 /* 467 * Now we have to get all subsequent responses. The CIFS specification 468 * says that they can be disordered which is weird. 469 * TODO: timo 470 */ 471 totpgot = totdgot = 0; 472 totpcount = totdcount = 0xffff; 473 mdp = &rqp->sr_rp; 474 for (;;) { 475 m_dumpm(mdp->md_top); 476 if ((error = md_get_uint8(mdp, &wc)) != 0) 477 break; 478 if (wc < 10) { 479 error = ENOENT; 480 break; 481 } 482 if ((error = md_get_uint16le(mdp, &tmp)) != 0) 483 break; 484 if (totpcount > tmp) 485 totpcount = tmp; 486 md_get_uint16le(mdp, &tmp); 487 if (totdcount > tmp) 488 totdcount = tmp; 489 if ((error = md_get_uint16le(mdp, &tmp)) != 0 || /* reserved */ 490 (error = md_get_uint16le(mdp, &pcount)) != 0 || 491 (error = md_get_uint16le(mdp, &poff)) != 0 || 492 (error = md_get_uint16le(mdp, &pdisp)) != 0) 493 break; 494 if (pcount != 0 && pdisp != totpgot) { 495 SMBERROR("Can't handle disordered parameters %d:%d\n", 496 pdisp, totpgot); 497 error = EINVAL; 498 break; 499 } 500 if ((error = md_get_uint16le(mdp, &dcount)) != 0 || 501 (error = md_get_uint16le(mdp, &doff)) != 0 || 502 (error = md_get_uint16le(mdp, &ddisp)) != 0) 503 break; 504 if (dcount != 0 && ddisp != totdgot) { 505 SMBERROR("Can't handle disordered data\n"); 506 error = EINVAL; 507 break; 508 } 509 md_get_uint8(mdp, &wc); 510 md_get_uint8(mdp, NULL); 511 tmp = wc; 512 while (tmp--) 513 md_get_uint16(mdp, NULL); 514 if ((error = md_get_uint16le(mdp, &bc)) != 0) 515 break; 516 /* tmp = SMB_HDRLEN + 1 + 10 * 2 + 2 * wc + 2;*/ 517 if (dcount) { 518 error = smb_t2_placedata(mdp->md_top, doff, dcount, 519 &t2p->t2_rdata); 520 if (error) 521 break; 522 } 523 if (pcount) { 524 error = smb_t2_placedata(mdp->md_top, poff, pcount, 525 &t2p->t2_rparam); 526 if (error) 527 break; 528 } 529 totpgot += pcount; 530 totdgot += dcount; 531 if (totpgot >= totpcount && totdgot >= totdcount) { 532 error = 0; 533 t2p->t2_flags |= SMBT2_ALLRECV; 534 break; 535 } 536 /* 537 * We're done with this reply, look for the next one. 538 */ 539 SMBRQ_SLOCK(rqp); 540 md_next_record(&rqp->sr_rp); 541 SMBRQ_SUNLOCK(rqp); 542 error = smb_rq_reply(rqp); 543 if (error) 544 break; 545 } 546 return error; 547 } 548 549 /* 550 * Perform a full round of TRANS2 request 551 */ 552 static int 553 smb_t2_request_int(struct smb_t2rq *t2p) 554 { 555 struct smb_vc *vcp = t2p->t2_vc; 556 struct smb_cred *scred = t2p->t2_cred; 557 struct mbchain *mbp; 558 struct mdchain *mdp, mbparam, mbdata; 559 struct mbuf *m; 560 struct smb_rq *rqp; 561 int totpcount, leftpcount, totdcount, leftdcount, len, txmax, i; 562 int error, doff, poff, txdcount, txpcount, nmlen; 563 564 m = t2p->t2_tparam.mb_top; 565 if (m) { 566 md_initm(&mbparam, m); /* do not free it! */ 567 totpcount = m_fixhdr(m); 568 if (totpcount > 0xffff) /* maxvalue for u_short */ 569 return EINVAL; 570 } else 571 totpcount = 0; 572 m = t2p->t2_tdata.mb_top; 573 if (m) { 574 md_initm(&mbdata, m); /* do not free it! */ 575 totdcount = m_fixhdr(m); 576 if (totdcount > 0xffff) 577 return EINVAL; 578 } else 579 totdcount = 0; 580 leftdcount = totdcount; 581 leftpcount = totpcount; 582 txmax = vcp->vc_txmax; 583 error = smb_rq_alloc(t2p->t2_source, t2p->t_name ? 584 SMB_COM_TRANSACTION : SMB_COM_TRANSACTION2, scred, &rqp); 585 if (error) 586 return error; 587 rqp->sr_flags |= SMBR_MULTIPACKET; 588 t2p->t2_rq = rqp; 589 rqp->sr_t2 = t2p; 590 mbp = &rqp->sr_rq; 591 smb_rq_wstart(rqp); 592 mb_put_uint16le(mbp, totpcount); 593 mb_put_uint16le(mbp, totdcount); 594 mb_put_uint16le(mbp, t2p->t2_maxpcount); 595 mb_put_uint16le(mbp, t2p->t2_maxdcount); 596 mb_put_uint8(mbp, t2p->t2_maxscount); 597 mb_put_uint8(mbp, 0); /* reserved */ 598 mb_put_uint16le(mbp, 0); /* flags */ 599 mb_put_uint32le(mbp, 0); /* Timeout */ 600 mb_put_uint16le(mbp, 0); /* reserved 2 */ 601 len = mb_fixhdr(mbp); 602 /* 603 * now we have known packet size as 604 * ALIGN4(len + 5 * 2 + setupcount * 2 + 2 + strlen(name) + 1), 605 * and need to decide which parts should go into the first request 606 */ 607 nmlen = t2p->t_name ? strlen(t2p->t_name) : 0; 608 len = ALIGN4(len + 5 * 2 + t2p->t2_setupcount * 2 + 2 + nmlen + 1); 609 if (len + leftpcount > txmax) { 610 txpcount = min(leftpcount, txmax - len); 611 poff = len; 612 txdcount = 0; 613 doff = 0; 614 } else { 615 txpcount = leftpcount; 616 poff = txpcount ? len : 0; 617 len = ALIGN4(len + txpcount); 618 txdcount = min(leftdcount, txmax - len); 619 doff = txdcount ? len : 0; 620 } 621 leftpcount -= txpcount; 622 leftdcount -= txdcount; 623 mb_put_uint16le(mbp, txpcount); 624 mb_put_uint16le(mbp, poff); 625 mb_put_uint16le(mbp, txdcount); 626 mb_put_uint16le(mbp, doff); 627 mb_put_uint8(mbp, t2p->t2_setupcount); 628 mb_put_uint8(mbp, 0); 629 for (i = 0; i < t2p->t2_setupcount; i++) 630 mb_put_uint16le(mbp, t2p->t2_setupdata[i]); 631 smb_rq_wend(rqp); 632 smb_rq_bstart(rqp); 633 /* TDUNICODE */ 634 if (t2p->t_name) 635 mb_put_mem(mbp, t2p->t_name, nmlen, MB_MSYSTEM); 636 mb_put_uint8(mbp, 0); /* terminating zero */ 637 len = mb_fixhdr(mbp); 638 if (txpcount) { 639 mb_put_mem(mbp, NULL, ALIGN4(len) - len, MB_MZERO); 640 error = md_get_mbuf(&mbparam, txpcount, &m); 641 SMBSDEBUG("%d:%d:%d\n", error, txpcount, txmax); 642 if (error) 643 goto freerq; 644 mb_put_mbuf(mbp, m); 645 } 646 len = mb_fixhdr(mbp); 647 if (txdcount) { 648 mb_put_mem(mbp, NULL, ALIGN4(len) - len, MB_MZERO); 649 error = md_get_mbuf(&mbdata, txdcount, &m); 650 if (error) 651 goto freerq; 652 mb_put_mbuf(mbp, m); 653 } 654 smb_rq_bend(rqp); /* incredible, but thats it... */ 655 error = smb_rq_enqueue(rqp); 656 if (error) 657 goto freerq; 658 if (leftpcount == 0 && leftdcount == 0) 659 t2p->t2_flags |= SMBT2_ALLSENT; 660 error = smb_t2_reply(t2p); 661 if (error) 662 goto bad; 663 while (leftpcount || leftdcount) { 664 t2p->t2_flags |= SMBT2_SECONDARY; 665 error = smb_rq_new(rqp, t2p->t_name ? 666 SMB_COM_TRANSACTION_SECONDARY : SMB_COM_TRANSACTION2_SECONDARY); 667 if (error) 668 goto bad; 669 mbp = &rqp->sr_rq; 670 smb_rq_wstart(rqp); 671 mb_put_uint16le(mbp, totpcount); 672 mb_put_uint16le(mbp, totdcount); 673 len = mb_fixhdr(mbp); 674 /* 675 * now we have known packet size as 676 * ALIGN4(len + 7 * 2 + 2) for T2 request, and -2 for T one, 677 * and need to decide which parts should go into request 678 */ 679 len = ALIGN4(len + 6 * 2 + 2); 680 if (t2p->t_name == NULL) 681 len += 2; 682 if (len + leftpcount > txmax) { 683 txpcount = min(leftpcount, txmax - len); 684 poff = len; 685 txdcount = 0; 686 doff = 0; 687 } else { 688 txpcount = leftpcount; 689 poff = txpcount ? len : 0; 690 len = ALIGN4(len + txpcount); 691 txdcount = min(leftdcount, txmax - len); 692 doff = txdcount ? len : 0; 693 } 694 mb_put_uint16le(mbp, txpcount); 695 mb_put_uint16le(mbp, poff); 696 mb_put_uint16le(mbp, totpcount - leftpcount); 697 mb_put_uint16le(mbp, txdcount); 698 mb_put_uint16le(mbp, doff); 699 mb_put_uint16le(mbp, totdcount - leftdcount); 700 leftpcount -= txpcount; 701 leftdcount -= txdcount; 702 if (t2p->t_name == NULL) 703 mb_put_uint16le(mbp, t2p->t2_fid); 704 smb_rq_wend(rqp); 705 smb_rq_bstart(rqp); 706 mb_put_uint8(mbp, 0); /* name */ 707 len = mb_fixhdr(mbp); 708 if (txpcount) { 709 mb_put_mem(mbp, NULL, ALIGN4(len) - len, MB_MZERO); 710 error = md_get_mbuf(&mbparam, txpcount, &m); 711 if (error) 712 goto bad; 713 mb_put_mbuf(mbp, m); 714 } 715 len = mb_fixhdr(mbp); 716 if (txdcount) { 717 mb_put_mem(mbp, NULL, ALIGN4(len) - len, MB_MZERO); 718 error = md_get_mbuf(&mbdata, txdcount, &m); 719 if (error) 720 goto bad; 721 mb_put_mbuf(mbp, m); 722 } 723 smb_rq_bend(rqp); 724 rqp->sr_state = SMBRQ_NOTSENT; 725 error = smb_iod_request(vcp->vc_iod, SMBIOD_EV_NEWRQ, NULL); 726 if (error) 727 goto bad; 728 } /* while left params or data */ 729 t2p->t2_flags |= SMBT2_ALLSENT; 730 mdp = &t2p->t2_rdata; 731 if (mdp->md_top) { 732 m_fixhdr(mdp->md_top); 733 md_initm(mdp, mdp->md_top); 734 } 735 mdp = &t2p->t2_rparam; 736 if (mdp->md_top) { 737 m_fixhdr(mdp->md_top); 738 md_initm(mdp, mdp->md_top); 739 } 740 bad: 741 smb_iod_removerq(rqp); 742 freerq: 743 smb_rq_done(rqp); 744 if (error) { 745 if (rqp->sr_flags & SMBR_RESTART) 746 t2p->t2_flags |= SMBT2_RESTART; 747 md_done(&t2p->t2_rparam); 748 md_done(&t2p->t2_rdata); 749 } 750 return error; 751 } 752 753 int 754 smb_t2_request(struct smb_t2rq *t2p) 755 { 756 int error = EINVAL, i; 757 758 for (i = 0; i < SMB_MAXRCN; i++) { 759 t2p->t2_flags &= ~SMBR_RESTART; 760 error = smb_t2_request_int(t2p); 761 if (error == 0) 762 break; 763 if ((t2p->t2_flags & (SMBT2_RESTART | SMBT2_NORESTART)) != SMBT2_RESTART) 764 break; 765 } 766 return error; 767 } 768