smb_rq.c revision 124087
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 33#include <sys/cdefs.h> 34__FBSDID("$FreeBSD: head/sys/netsmb/smb_rq.c 124087 2004-01-02 22:38:42Z tjr $"); 35 36#include <sys/param.h> 37#include <sys/systm.h> 38#include <sys/endian.h> 39#include <sys/kernel.h> 40#include <sys/malloc.h> 41#include <sys/proc.h> 42#include <sys/lock.h> 43#include <sys/sysctl.h> 44#include <sys/socket.h> 45#include <sys/socketvar.h> 46#include <sys/mbuf.h> 47 48#include <netsmb/smb.h> 49#include <netsmb/smb_conn.h> 50#include <netsmb/smb_rq.h> 51#include <netsmb/smb_subr.h> 52#include <netsmb/smb_tran.h> 53 54MALLOC_DEFINE(M_SMBRQ, "SMBRQ", "SMB request"); 55 56MODULE_DEPEND(netsmb, libmchain, 1, 1, 1); 57 58static int smb_rq_reply(struct smb_rq *rqp); 59static int smb_rq_enqueue(struct smb_rq *rqp); 60static int smb_rq_getenv(struct smb_connobj *layer, 61 struct smb_vc **vcpp, struct smb_share **sspp); 62static int smb_rq_new(struct smb_rq *rqp, u_char cmd); 63static int smb_t2_reply(struct smb_t2rq *t2p); 64 65int 66smb_rq_alloc(struct smb_connobj *layer, u_char cmd, struct smb_cred *scred, 67 struct smb_rq **rqpp) 68{ 69 struct smb_rq *rqp; 70 int error; 71 72 MALLOC(rqp, struct smb_rq *, sizeof(*rqp), M_SMBRQ, M_WAITOK); 73 if (rqp == NULL) 74 return ENOMEM; 75 error = smb_rq_init(rqp, layer, cmd, scred); 76 rqp->sr_flags |= SMBR_ALLOCED; 77 if (error) { 78 smb_rq_done(rqp); 79 return error; 80 } 81 *rqpp = rqp; 82 return 0; 83} 84 85static char tzero[12]; 86 87int 88smb_rq_init(struct smb_rq *rqp, struct smb_connobj *layer, u_char cmd, 89 struct smb_cred *scred) 90{ 91 int error; 92 93 bzero(rqp, sizeof(*rqp)); 94 smb_sl_init(&rqp->sr_slock, "srslock"); 95 error = smb_rq_getenv(layer, &rqp->sr_vc, &rqp->sr_share); 96 if (error) 97 return error; 98 error = smb_vc_access(rqp->sr_vc, scred, SMBM_EXEC); 99 if (error) 100 return error; 101 if (rqp->sr_share) { 102 error = smb_share_access(rqp->sr_share, scred, SMBM_EXEC); 103 if (error) 104 return error; 105 } 106 rqp->sr_cred = scred; 107 rqp->sr_mid = smb_vc_nextmid(rqp->sr_vc); 108 return smb_rq_new(rqp, cmd); 109} 110 111static int 112smb_rq_new(struct smb_rq *rqp, u_char cmd) 113{ 114 struct smb_vc *vcp = rqp->sr_vc; 115 struct mbchain *mbp = &rqp->sr_rq; 116 int error; 117 u_int16_t flags2; 118 119 rqp->sr_sendcnt = 0; 120 mb_done(mbp); 121 md_done(&rqp->sr_rp); 122 error = mb_init(mbp); 123 if (error) 124 return error; 125 mb_put_mem(mbp, SMB_SIGNATURE, SMB_SIGLEN, MB_MSYSTEM); 126 mb_put_uint8(mbp, cmd); 127 mb_put_uint32le(mbp, 0); /* DosError */ 128 mb_put_uint8(mbp, vcp->vc_hflags); 129 flags2 = vcp->vc_hflags2; 130 if (cmd == SMB_COM_TRANSACTION || cmd == SMB_COM_TRANSACTION_SECONDARY) 131 flags2 &= ~SMB_FLAGS2_UNICODE; 132 if (cmd == SMB_COM_NEGOTIATE) 133 flags2 &= ~SMB_FLAGS2_SECURITY_SIGNATURE; 134 mb_put_uint16le(mbp, flags2); 135 if ((flags2 & SMB_FLAGS2_SECURITY_SIGNATURE) == 0) { 136 mb_put_mem(mbp, tzero, 12, MB_MSYSTEM); 137 rqp->sr_rqsig = NULL; 138 } else { 139 mb_put_uint16le(mbp, 0 /*scred->sc_p->p_pid >> 16*/); 140 rqp->sr_rqsig = (u_int8_t *)mb_reserve(mbp, 8); 141 mb_put_uint16le(mbp, 0); 142 } 143 rqp->sr_rqtid = (u_int16_t*)mb_reserve(mbp, sizeof(u_int16_t)); 144 mb_put_uint16le(mbp, 1 /*scred->sc_p->p_pid & 0xffff*/); 145 rqp->sr_rquid = (u_int16_t*)mb_reserve(mbp, sizeof(u_int16_t)); 146 mb_put_uint16le(mbp, rqp->sr_mid); 147 return 0; 148} 149 150void 151smb_rq_done(struct smb_rq *rqp) 152{ 153 mb_done(&rqp->sr_rq); 154 md_done(&rqp->sr_rp); 155 smb_sl_destroy(&rqp->sr_slock); 156 if (rqp->sr_flags & SMBR_ALLOCED) 157 free(rqp, M_SMBRQ); 158} 159 160/* 161 * Simple request-reply exchange 162 */ 163int 164smb_rq_simple(struct smb_rq *rqp) 165{ 166 struct smb_vc *vcp = rqp->sr_vc; 167 int error = EINVAL, i; 168 169 for (i = 0; i < SMB_MAXRCN; i++) { 170 rqp->sr_flags &= ~SMBR_RESTART; 171 rqp->sr_timo = vcp->vc_timo; 172 rqp->sr_state = SMBRQ_NOTSENT; 173 error = smb_rq_enqueue(rqp); 174 if (error) 175 return error; 176 error = smb_rq_reply(rqp); 177 if (error == 0) 178 break; 179 if ((rqp->sr_flags & (SMBR_RESTART | SMBR_NORESTART)) != SMBR_RESTART) 180 break; 181 } 182 return error; 183} 184 185static int 186smb_rq_enqueue(struct smb_rq *rqp) 187{ 188 struct smb_share *ssp = rqp->sr_share; 189 int error; 190 191 if (ssp == NULL || rqp->sr_cred == &rqp->sr_vc->vc_iod->iod_scred) { 192 return smb_iod_addrq(rqp); 193 } 194 for (;;) { 195 SMBS_ST_LOCK(ssp); 196 if (ssp->ss_flags & SMBS_RECONNECTING) { 197 msleep(&ssp->ss_vcgenid, SMBS_ST_LOCKPTR(ssp), 198 PWAIT | PDROP, "90trcn", hz); 199 if (smb_td_intr(rqp->sr_cred->scr_td)) 200 return EINTR; 201 continue; 202 } 203 if (smb_share_valid(ssp) || (ssp->ss_flags & SMBS_CONNECTED) == 0) { 204 SMBS_ST_UNLOCK(ssp); 205 } else { 206 SMBS_ST_UNLOCK(ssp); 207 error = smb_iod_request(rqp->sr_vc->vc_iod, 208 SMBIOD_EV_TREECONNECT | SMBIOD_EV_SYNC, ssp); 209 if (error) 210 return error; 211 } 212 error = smb_iod_addrq(rqp); 213 if (error != EXDEV) 214 break; 215 } 216 return error; 217} 218 219void 220smb_rq_wstart(struct smb_rq *rqp) 221{ 222 rqp->sr_wcount = mb_reserve(&rqp->sr_rq, sizeof(u_int8_t)); 223 rqp->sr_rq.mb_count = 0; 224} 225 226void 227smb_rq_wend(struct smb_rq *rqp) 228{ 229 if (rqp->sr_wcount == NULL) { 230 SMBERROR("no wcount\n"); /* actually panic */ 231 return; 232 } 233 if (rqp->sr_rq.mb_count & 1) 234 SMBERROR("odd word count\n"); 235 *rqp->sr_wcount = rqp->sr_rq.mb_count / 2; 236} 237 238void 239smb_rq_bstart(struct smb_rq *rqp) 240{ 241 rqp->sr_bcount = (u_short*)mb_reserve(&rqp->sr_rq, sizeof(u_short)); 242 rqp->sr_rq.mb_count = 0; 243} 244 245void 246smb_rq_bend(struct smb_rq *rqp) 247{ 248 int bcnt; 249 250 if (rqp->sr_bcount == NULL) { 251 SMBERROR("no bcount\n"); /* actually panic */ 252 return; 253 } 254 bcnt = rqp->sr_rq.mb_count; 255 if (bcnt > 0xffff) 256 SMBERROR("byte count too large (%d)\n", bcnt); 257 *rqp->sr_bcount = htole16(bcnt); 258} 259 260int 261smb_rq_intr(struct smb_rq *rqp) 262{ 263 if (rqp->sr_flags & SMBR_INTR) 264 return EINTR; 265 return smb_td_intr(rqp->sr_cred->scr_td); 266} 267 268int 269smb_rq_getrequest(struct smb_rq *rqp, struct mbchain **mbpp) 270{ 271 *mbpp = &rqp->sr_rq; 272 return 0; 273} 274 275int 276smb_rq_getreply(struct smb_rq *rqp, struct mdchain **mbpp) 277{ 278 *mbpp = &rqp->sr_rp; 279 return 0; 280} 281 282static int 283smb_rq_getenv(struct smb_connobj *layer, 284 struct smb_vc **vcpp, struct smb_share **sspp) 285{ 286 struct smb_vc *vcp = NULL; 287 struct smb_share *ssp = NULL; 288 struct smb_connobj *cp; 289 int error = 0; 290 291 switch (layer->co_level) { 292 case SMBL_VC: 293 vcp = CPTOVC(layer); 294 if (layer->co_parent == NULL) { 295 SMBERROR("zombie VC %s\n", vcp->vc_srvname); 296 error = EINVAL; 297 break; 298 } 299 break; 300 case SMBL_SHARE: 301 ssp = CPTOSS(layer); 302 cp = layer->co_parent; 303 if (cp == NULL) { 304 SMBERROR("zombie share %s\n", ssp->ss_name); 305 error = EINVAL; 306 break; 307 } 308 error = smb_rq_getenv(cp, &vcp, NULL); 309 if (error) 310 break; 311 break; 312 default: 313 SMBERROR("invalid layer %d passed\n", layer->co_level); 314 error = EINVAL; 315 } 316 if (vcpp) 317 *vcpp = vcp; 318 if (sspp) 319 *sspp = ssp; 320 return error; 321} 322 323/* 324 * Wait for reply on the request 325 */ 326static int 327smb_rq_reply(struct smb_rq *rqp) 328{ 329 struct mdchain *mdp = &rqp->sr_rp; 330 u_int32_t tdw; 331 u_int8_t tb; 332 int error, rperror = 0; 333 334 error = smb_iod_waitrq(rqp); 335 if (error) 336 return error; 337 error = md_get_uint32(mdp, &tdw); 338 if (error) 339 return error; 340 error = md_get_uint8(mdp, &tb); 341 if (rqp->sr_vc->vc_hflags2 & SMB_FLAGS2_ERR_STATUS) { 342 error = md_get_uint32le(mdp, &rqp->sr_error); 343 } else { 344 error = md_get_uint8(mdp, &rqp->sr_errclass); 345 error = md_get_uint8(mdp, &tb); 346 error = md_get_uint16le(mdp, &rqp->sr_serror); 347 if (!error) 348 rperror = smb_maperror(rqp->sr_errclass, rqp->sr_serror); 349 } 350 error = md_get_uint8(mdp, &rqp->sr_rpflags); 351 error = md_get_uint16le(mdp, &rqp->sr_rpflags2); 352 353 error = md_get_uint32(mdp, &tdw); 354 error = md_get_uint32(mdp, &tdw); 355 error = md_get_uint32(mdp, &tdw); 356 357 error = md_get_uint16le(mdp, &rqp->sr_rptid); 358 error = md_get_uint16le(mdp, &rqp->sr_rppid); 359 error = md_get_uint16le(mdp, &rqp->sr_rpuid); 360 error = md_get_uint16le(mdp, &rqp->sr_rpmid); 361 362 if (error == 0 && 363 (rqp->sr_vc->vc_hflags2 & SMB_FLAGS2_SECURITY_SIGNATURE)) 364 error = smb_rq_verify(rqp); 365 366 SMBSDEBUG("M:%04x, P:%04x, U:%04x, T:%04x, E: %d:%d\n", 367 rqp->sr_rpmid, rqp->sr_rppid, rqp->sr_rpuid, rqp->sr_rptid, 368 rqp->sr_errclass, rqp->sr_serror); 369 return error ? error : rperror; 370} 371 372 373#define ALIGN4(a) (((a) + 3) & ~3) 374 375/* 376 * TRANS2 request implementation 377 */ 378int 379smb_t2_alloc(struct smb_connobj *layer, u_short setup, struct smb_cred *scred, 380 struct smb_t2rq **t2pp) 381{ 382 struct smb_t2rq *t2p; 383 int error; 384 385 MALLOC(t2p, struct smb_t2rq *, sizeof(*t2p), M_SMBRQ, M_WAITOK); 386 if (t2p == NULL) 387 return ENOMEM; 388 error = smb_t2_init(t2p, layer, setup, scred); 389 t2p->t2_flags |= SMBT2_ALLOCED; 390 if (error) { 391 smb_t2_done(t2p); 392 return error; 393 } 394 *t2pp = t2p; 395 return 0; 396} 397 398int 399smb_t2_init(struct smb_t2rq *t2p, struct smb_connobj *source, u_short setup, 400 struct smb_cred *scred) 401{ 402 int error; 403 404 bzero(t2p, sizeof(*t2p)); 405 t2p->t2_source = source; 406 t2p->t2_setupcount = 1; 407 t2p->t2_setupdata = t2p->t2_setup; 408 t2p->t2_setup[0] = setup; 409 t2p->t2_fid = 0xffff; 410 t2p->t2_cred = scred; 411 error = smb_rq_getenv(source, &t2p->t2_vc, NULL); 412 if (error) 413 return error; 414 return 0; 415} 416 417void 418smb_t2_done(struct smb_t2rq *t2p) 419{ 420 mb_done(&t2p->t2_tparam); 421 mb_done(&t2p->t2_tdata); 422 md_done(&t2p->t2_rparam); 423 md_done(&t2p->t2_rdata); 424 if (t2p->t2_flags & SMBT2_ALLOCED) 425 free(t2p, M_SMBRQ); 426} 427 428static int 429smb_t2_placedata(struct mbuf *mtop, u_int16_t offset, u_int16_t count, 430 struct mdchain *mdp) 431{ 432 struct mbuf *m, *m0; 433 int len; 434 435 m0 = m_split(mtop, offset, M_TRYWAIT); 436 if (m0 == NULL) 437 return EBADRPC; 438 len = m_length(m0, &m); 439 m->m_len -= len - count; 440 if (mdp->md_top == NULL) { 441 md_initm(mdp, m0); 442 } else 443 m_cat(mdp->md_top, m0); 444 return 0; 445} 446 447static int 448smb_t2_reply(struct smb_t2rq *t2p) 449{ 450 struct mdchain *mdp; 451 struct smb_rq *rqp = t2p->t2_rq; 452 int error, totpgot, totdgot; 453 u_int16_t totpcount, totdcount, pcount, poff, doff, pdisp, ddisp; 454 u_int16_t tmp, bc, dcount; 455 u_int8_t wc; 456 457 error = smb_rq_reply(rqp); 458 if (error) 459 return error; 460 if ((t2p->t2_flags & SMBT2_ALLSENT) == 0) { 461 /* 462 * this is an interim response, ignore it. 463 */ 464 SMBRQ_SLOCK(rqp); 465 md_next_record(&rqp->sr_rp); 466 SMBRQ_SUNLOCK(rqp); 467 return 0; 468 } 469 /* 470 * Now we have to get all subsequent responses. The CIFS specification 471 * says that they can be disordered which is weird. 472 * TODO: timo 473 */ 474 totpgot = totdgot = 0; 475 totpcount = totdcount = 0xffff; 476 mdp = &rqp->sr_rp; 477 for (;;) { 478 m_dumpm(mdp->md_top); 479 if ((error = md_get_uint8(mdp, &wc)) != 0) 480 break; 481 if (wc < 10) { 482 error = ENOENT; 483 break; 484 } 485 if ((error = md_get_uint16le(mdp, &tmp)) != 0) 486 break; 487 if (totpcount > tmp) 488 totpcount = tmp; 489 md_get_uint16le(mdp, &tmp); 490 if (totdcount > tmp) 491 totdcount = tmp; 492 if ((error = md_get_uint16le(mdp, &tmp)) != 0 || /* reserved */ 493 (error = md_get_uint16le(mdp, &pcount)) != 0 || 494 (error = md_get_uint16le(mdp, &poff)) != 0 || 495 (error = md_get_uint16le(mdp, &pdisp)) != 0) 496 break; 497 if (pcount != 0 && pdisp != totpgot) { 498 SMBERROR("Can't handle disordered parameters %d:%d\n", 499 pdisp, totpgot); 500 error = EINVAL; 501 break; 502 } 503 if ((error = md_get_uint16le(mdp, &dcount)) != 0 || 504 (error = md_get_uint16le(mdp, &doff)) != 0 || 505 (error = md_get_uint16le(mdp, &ddisp)) != 0) 506 break; 507 if (dcount != 0 && ddisp != totdgot) { 508 SMBERROR("Can't handle disordered data\n"); 509 error = EINVAL; 510 break; 511 } 512 md_get_uint8(mdp, &wc); 513 md_get_uint8(mdp, NULL); 514 tmp = wc; 515 while (tmp--) 516 md_get_uint16(mdp, NULL); 517 if ((error = md_get_uint16le(mdp, &bc)) != 0) 518 break; 519/* tmp = SMB_HDRLEN + 1 + 10 * 2 + 2 * wc + 2;*/ 520 if (dcount) { 521 error = smb_t2_placedata(mdp->md_top, doff, dcount, 522 &t2p->t2_rdata); 523 if (error) 524 break; 525 } 526 if (pcount) { 527 error = smb_t2_placedata(mdp->md_top, poff, pcount, 528 &t2p->t2_rparam); 529 if (error) 530 break; 531 } 532 totpgot += pcount; 533 totdgot += dcount; 534 if (totpgot >= totpcount && totdgot >= totdcount) { 535 error = 0; 536 t2p->t2_flags |= SMBT2_ALLRECV; 537 break; 538 } 539 /* 540 * We're done with this reply, look for the next one. 541 */ 542 SMBRQ_SLOCK(rqp); 543 md_next_record(&rqp->sr_rp); 544 SMBRQ_SUNLOCK(rqp); 545 error = smb_rq_reply(rqp); 546 if (error) 547 break; 548 } 549 return error; 550} 551 552/* 553 * Perform a full round of TRANS2 request 554 */ 555static int 556smb_t2_request_int(struct smb_t2rq *t2p) 557{ 558 struct smb_vc *vcp = t2p->t2_vc; 559 struct smb_cred *scred = t2p->t2_cred; 560 struct mbchain *mbp; 561 struct mdchain *mdp, mbparam, mbdata; 562 struct mbuf *m; 563 struct smb_rq *rqp; 564 int totpcount, leftpcount, totdcount, leftdcount, len, txmax, i; 565 int error, doff, poff, txdcount, txpcount, nmlen; 566 567 m = t2p->t2_tparam.mb_top; 568 if (m) { 569 md_initm(&mbparam, m); /* do not free it! */ 570 totpcount = m_fixhdr(m); 571 if (totpcount > 0xffff) /* maxvalue for u_short */ 572 return EINVAL; 573 } else 574 totpcount = 0; 575 m = t2p->t2_tdata.mb_top; 576 if (m) { 577 md_initm(&mbdata, m); /* do not free it! */ 578 totdcount = m_fixhdr(m); 579 if (totdcount > 0xffff) 580 return EINVAL; 581 } else 582 totdcount = 0; 583 leftdcount = totdcount; 584 leftpcount = totpcount; 585 txmax = vcp->vc_txmax; 586 error = smb_rq_alloc(t2p->t2_source, t2p->t_name ? 587 SMB_COM_TRANSACTION : SMB_COM_TRANSACTION2, scred, &rqp); 588 if (error) 589 return error; 590 rqp->sr_flags |= SMBR_MULTIPACKET; 591 t2p->t2_rq = rqp; 592 rqp->sr_t2 = t2p; 593 mbp = &rqp->sr_rq; 594 smb_rq_wstart(rqp); 595 mb_put_uint16le(mbp, totpcount); 596 mb_put_uint16le(mbp, totdcount); 597 mb_put_uint16le(mbp, t2p->t2_maxpcount); 598 mb_put_uint16le(mbp, t2p->t2_maxdcount); 599 mb_put_uint8(mbp, t2p->t2_maxscount); 600 mb_put_uint8(mbp, 0); /* reserved */ 601 mb_put_uint16le(mbp, 0); /* flags */ 602 mb_put_uint32le(mbp, 0); /* Timeout */ 603 mb_put_uint16le(mbp, 0); /* reserved 2 */ 604 len = mb_fixhdr(mbp); 605 /* 606 * now we have known packet size as 607 * ALIGN4(len + 5 * 2 + setupcount * 2 + 2 + strlen(name) + 1), 608 * and need to decide which parts should go into the first request 609 */ 610 nmlen = t2p->t_name ? strlen(t2p->t_name) : 0; 611 len = ALIGN4(len + 5 * 2 + t2p->t2_setupcount * 2 + 2 + nmlen + 1); 612 if (len + leftpcount > txmax) { 613 txpcount = min(leftpcount, txmax - len); 614 poff = len; 615 txdcount = 0; 616 doff = 0; 617 } else { 618 txpcount = leftpcount; 619 poff = txpcount ? len : 0; 620 len = ALIGN4(len + txpcount); 621 txdcount = min(leftdcount, txmax - len); 622 doff = txdcount ? len : 0; 623 } 624 leftpcount -= txpcount; 625 leftdcount -= txdcount; 626 mb_put_uint16le(mbp, txpcount); 627 mb_put_uint16le(mbp, poff); 628 mb_put_uint16le(mbp, txdcount); 629 mb_put_uint16le(mbp, doff); 630 mb_put_uint8(mbp, t2p->t2_setupcount); 631 mb_put_uint8(mbp, 0); 632 for (i = 0; i < t2p->t2_setupcount; i++) 633 mb_put_uint16le(mbp, t2p->t2_setupdata[i]); 634 smb_rq_wend(rqp); 635 smb_rq_bstart(rqp); 636 /* TDUNICODE */ 637 if (t2p->t_name) 638 mb_put_mem(mbp, t2p->t_name, nmlen, MB_MSYSTEM); 639 mb_put_uint8(mbp, 0); /* terminating zero */ 640 len = mb_fixhdr(mbp); 641 if (txpcount) { 642 mb_put_mem(mbp, NULL, ALIGN4(len) - len, MB_MZERO); 643 error = md_get_mbuf(&mbparam, txpcount, &m); 644 SMBSDEBUG("%d:%d:%d\n", error, txpcount, txmax); 645 if (error) 646 goto freerq; 647 mb_put_mbuf(mbp, m); 648 } 649 len = mb_fixhdr(mbp); 650 if (txdcount) { 651 mb_put_mem(mbp, NULL, ALIGN4(len) - len, MB_MZERO); 652 error = md_get_mbuf(&mbdata, txdcount, &m); 653 if (error) 654 goto freerq; 655 mb_put_mbuf(mbp, m); 656 } 657 smb_rq_bend(rqp); /* incredible, but thats it... */ 658 error = smb_rq_enqueue(rqp); 659 if (error) 660 goto freerq; 661 if (leftpcount == 0 && leftdcount == 0) 662 t2p->t2_flags |= SMBT2_ALLSENT; 663 error = smb_t2_reply(t2p); 664 if (error) 665 goto bad; 666 while (leftpcount || leftdcount) { 667 t2p->t2_flags |= SMBT2_SECONDARY; 668 error = smb_rq_new(rqp, t2p->t_name ? 669 SMB_COM_TRANSACTION_SECONDARY : SMB_COM_TRANSACTION2_SECONDARY); 670 if (error) 671 goto bad; 672 mbp = &rqp->sr_rq; 673 smb_rq_wstart(rqp); 674 mb_put_uint16le(mbp, totpcount); 675 mb_put_uint16le(mbp, totdcount); 676 len = mb_fixhdr(mbp); 677 /* 678 * now we have known packet size as 679 * ALIGN4(len + 7 * 2 + 2) for T2 request, and -2 for T one, 680 * and need to decide which parts should go into request 681 */ 682 len = ALIGN4(len + 6 * 2 + 2); 683 if (t2p->t_name == NULL) 684 len += 2; 685 if (len + leftpcount > txmax) { 686 txpcount = min(leftpcount, txmax - len); 687 poff = len; 688 txdcount = 0; 689 doff = 0; 690 } else { 691 txpcount = leftpcount; 692 poff = txpcount ? len : 0; 693 len = ALIGN4(len + txpcount); 694 txdcount = min(leftdcount, txmax - len); 695 doff = txdcount ? len : 0; 696 } 697 mb_put_uint16le(mbp, txpcount); 698 mb_put_uint16le(mbp, poff); 699 mb_put_uint16le(mbp, totpcount - leftpcount); 700 mb_put_uint16le(mbp, txdcount); 701 mb_put_uint16le(mbp, doff); 702 mb_put_uint16le(mbp, totdcount - leftdcount); 703 leftpcount -= txpcount; 704 leftdcount -= txdcount; 705 if (t2p->t_name == NULL) 706 mb_put_uint16le(mbp, t2p->t2_fid); 707 smb_rq_wend(rqp); 708 smb_rq_bstart(rqp); 709 mb_put_uint8(mbp, 0); /* name */ 710 len = mb_fixhdr(mbp); 711 if (txpcount) { 712 mb_put_mem(mbp, NULL, ALIGN4(len) - len, MB_MZERO); 713 error = md_get_mbuf(&mbparam, txpcount, &m); 714 if (error) 715 goto bad; 716 mb_put_mbuf(mbp, m); 717 } 718 len = mb_fixhdr(mbp); 719 if (txdcount) { 720 mb_put_mem(mbp, NULL, ALIGN4(len) - len, MB_MZERO); 721 error = md_get_mbuf(&mbdata, txdcount, &m); 722 if (error) 723 goto bad; 724 mb_put_mbuf(mbp, m); 725 } 726 smb_rq_bend(rqp); 727 rqp->sr_state = SMBRQ_NOTSENT; 728 error = smb_iod_request(vcp->vc_iod, SMBIOD_EV_NEWRQ, NULL); 729 if (error) 730 goto bad; 731 } /* while left params or data */ 732 t2p->t2_flags |= SMBT2_ALLSENT; 733 mdp = &t2p->t2_rdata; 734 if (mdp->md_top) { 735 m_fixhdr(mdp->md_top); 736 md_initm(mdp, mdp->md_top); 737 } 738 mdp = &t2p->t2_rparam; 739 if (mdp->md_top) { 740 m_fixhdr(mdp->md_top); 741 md_initm(mdp, mdp->md_top); 742 } 743bad: 744 smb_iod_removerq(rqp); 745freerq: 746 smb_rq_done(rqp); 747 if (error) { 748 if (rqp->sr_flags & SMBR_RESTART) 749 t2p->t2_flags |= SMBT2_RESTART; 750 md_done(&t2p->t2_rparam); 751 md_done(&t2p->t2_rdata); 752 } 753 return error; 754} 755 756int 757smb_t2_request(struct smb_t2rq *t2p) 758{ 759 int error = EINVAL, i; 760 761 for (i = 0; i < SMB_MAXRCN; i++) { 762 t2p->t2_flags &= ~SMBR_RESTART; 763 error = smb_t2_request_int(t2p); 764 if (error == 0) 765 break; 766 if ((t2p->t2_flags & (SMBT2_RESTART | SMBT2_NORESTART)) != SMBT2_RESTART) 767 break; 768 } 769 return error; 770} 771