smb_rq.c revision 184205
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 184205 2008-10-23 15:53:51Z des $"); 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/module.h> 42#include <sys/proc.h> 43#include <sys/lock.h> 44#include <sys/sysctl.h> 45#include <sys/socket.h> 46#include <sys/socketvar.h> 47#include <sys/mbuf.h> 48 49#include <netsmb/smb.h> 50#include <netsmb/smb_conn.h> 51#include <netsmb/smb_rq.h> 52#include <netsmb/smb_subr.h> 53#include <netsmb/smb_tran.h> 54 55MALLOC_DEFINE(M_SMBRQ, "SMBRQ", "SMB request"); 56 57MODULE_DEPEND(netsmb, libmchain, 1, 1, 1); 58 59static int smb_rq_reply(struct smb_rq *rqp); 60static int smb_rq_enqueue(struct smb_rq *rqp); 61static int smb_rq_getenv(struct smb_connobj *layer, 62 struct smb_vc **vcpp, struct smb_share **sspp); 63static int smb_rq_new(struct smb_rq *rqp, u_char cmd); 64static int smb_t2_reply(struct smb_t2rq *t2p); 65 66int 67smb_rq_alloc(struct smb_connobj *layer, u_char cmd, struct smb_cred *scred, 68 struct smb_rq **rqpp) 69{ 70 struct smb_rq *rqp; 71 int error; 72 73 rqp = malloc(sizeof(*rqp), M_SMBRQ, M_WAITOK); 74 if (rqp == NULL) 75 return ENOMEM; 76 error = smb_rq_init(rqp, layer, cmd, scred); 77 rqp->sr_flags |= SMBR_ALLOCED; 78 if (error) { 79 smb_rq_done(rqp); 80 return error; 81 } 82 *rqpp = rqp; 83 return 0; 84} 85 86static char tzero[12]; 87 88int 89smb_rq_init(struct smb_rq *rqp, struct smb_connobj *layer, u_char cmd, 90 struct smb_cred *scred) 91{ 92 int error; 93 94 bzero(rqp, sizeof(*rqp)); 95 smb_sl_init(&rqp->sr_slock, "srslock"); 96 error = smb_rq_getenv(layer, &rqp->sr_vc, &rqp->sr_share); 97 if (error) 98 return error; 99 error = smb_vc_access(rqp->sr_vc, scred, SMBM_EXEC); 100 if (error) 101 return error; 102 if (rqp->sr_share) { 103 error = smb_share_access(rqp->sr_share, scred, SMBM_EXEC); 104 if (error) 105 return error; 106 } 107 rqp->sr_cred = scred; 108 rqp->sr_mid = smb_vc_nextmid(rqp->sr_vc); 109 return smb_rq_new(rqp, cmd); 110} 111 112static int 113smb_rq_new(struct smb_rq *rqp, u_char cmd) 114{ 115 struct smb_vc *vcp = rqp->sr_vc; 116 struct mbchain *mbp = &rqp->sr_rq; 117 int error; 118 u_int16_t flags2; 119 120 rqp->sr_sendcnt = 0; 121 mb_done(mbp); 122 md_done(&rqp->sr_rp); 123 error = mb_init(mbp); 124 if (error) 125 return error; 126 mb_put_mem(mbp, SMB_SIGNATURE, SMB_SIGLEN, MB_MSYSTEM); 127 mb_put_uint8(mbp, cmd); 128 mb_put_uint32le(mbp, 0); /* DosError */ 129 mb_put_uint8(mbp, vcp->vc_hflags); 130 flags2 = vcp->vc_hflags2; 131 if (cmd == SMB_COM_TRANSACTION || cmd == SMB_COM_TRANSACTION_SECONDARY) 132 flags2 &= ~SMB_FLAGS2_UNICODE; 133 if (cmd == SMB_COM_NEGOTIATE) 134 flags2 &= ~SMB_FLAGS2_SECURITY_SIGNATURE; 135 mb_put_uint16le(mbp, flags2); 136 if ((flags2 & SMB_FLAGS2_SECURITY_SIGNATURE) == 0) { 137 mb_put_mem(mbp, tzero, 12, MB_MSYSTEM); 138 rqp->sr_rqsig = NULL; 139 } else { 140 mb_put_uint16le(mbp, 0 /*scred->sc_p->p_pid >> 16*/); 141 rqp->sr_rqsig = (u_int8_t *)mb_reserve(mbp, 8); 142 mb_put_uint16le(mbp, 0); 143 } 144 rqp->sr_rqtid = mb_reserve(mbp, sizeof(u_int16_t)); 145 mb_put_uint16le(mbp, 1 /*scred->sc_p->p_pid & 0xffff*/); 146 rqp->sr_rquid = mb_reserve(mbp, sizeof(u_int16_t)); 147 mb_put_uint16le(mbp, rqp->sr_mid); 148 return 0; 149} 150 151void 152smb_rq_done(struct smb_rq *rqp) 153{ 154 mb_done(&rqp->sr_rq); 155 md_done(&rqp->sr_rp); 156 smb_sl_destroy(&rqp->sr_slock); 157 if (rqp->sr_flags & SMBR_ALLOCED) 158 free(rqp, M_SMBRQ); 159} 160 161/* 162 * Simple request-reply exchange 163 */ 164int 165smb_rq_simple(struct smb_rq *rqp) 166{ 167 struct smb_vc *vcp = rqp->sr_vc; 168 int error = EINVAL, i; 169 170 for (i = 0; i < SMB_MAXRCN; i++) { 171 rqp->sr_flags &= ~SMBR_RESTART; 172 rqp->sr_timo = vcp->vc_timo; 173 rqp->sr_state = SMBRQ_NOTSENT; 174 error = smb_rq_enqueue(rqp); 175 if (error) 176 return error; 177 error = smb_rq_reply(rqp); 178 if (error == 0) 179 break; 180 if ((rqp->sr_flags & (SMBR_RESTART | SMBR_NORESTART)) != SMBR_RESTART) 181 break; 182 } 183 return error; 184} 185 186static int 187smb_rq_enqueue(struct smb_rq *rqp) 188{ 189 struct smb_share *ssp = rqp->sr_share; 190 int error; 191 192 if (ssp == NULL || rqp->sr_cred == &rqp->sr_vc->vc_iod->iod_scred) { 193 return smb_iod_addrq(rqp); 194 } 195 for (;;) { 196 SMBS_ST_LOCK(ssp); 197 if (ssp->ss_flags & SMBS_RECONNECTING) { 198 msleep(&ssp->ss_vcgenid, SMBS_ST_LOCKPTR(ssp), 199 PWAIT | PDROP, "90trcn", hz); 200 if (smb_td_intr(rqp->sr_cred->scr_td)) 201 return EINTR; 202 continue; 203 } 204 if (smb_share_valid(ssp) || (ssp->ss_flags & SMBS_CONNECTED) == 0) { 205 SMBS_ST_UNLOCK(ssp); 206 } else { 207 SMBS_ST_UNLOCK(ssp); 208 error = smb_iod_request(rqp->sr_vc->vc_iod, 209 SMBIOD_EV_TREECONNECT | SMBIOD_EV_SYNC, ssp); 210 if (error) 211 return error; 212 } 213 error = smb_iod_addrq(rqp); 214 if (error != EXDEV) 215 break; 216 } 217 return error; 218} 219 220void 221smb_rq_wstart(struct smb_rq *rqp) 222{ 223 rqp->sr_wcount = mb_reserve(&rqp->sr_rq, sizeof(u_int8_t)); 224 rqp->sr_rq.mb_count = 0; 225} 226 227void 228smb_rq_wend(struct smb_rq *rqp) 229{ 230 if (rqp->sr_wcount == NULL) { 231 SMBERROR("no wcount\n"); /* actually panic */ 232 return; 233 } 234 if (rqp->sr_rq.mb_count & 1) 235 SMBERROR("odd word count\n"); 236 *rqp->sr_wcount = rqp->sr_rq.mb_count / 2; 237} 238 239void 240smb_rq_bstart(struct smb_rq *rqp) 241{ 242 rqp->sr_bcount = mb_reserve(&rqp->sr_rq, sizeof(u_short)); 243 rqp->sr_rq.mb_count = 0; 244} 245 246void 247smb_rq_bend(struct smb_rq *rqp) 248{ 249 int bcnt; 250 251 if (rqp->sr_bcount == NULL) { 252 SMBERROR("no bcount\n"); /* actually panic */ 253 return; 254 } 255 bcnt = rqp->sr_rq.mb_count; 256 if (bcnt > 0xffff) 257 SMBERROR("byte count too large (%d)\n", bcnt); 258 le16enc(rqp->sr_bcount, bcnt); 259} 260 261int 262smb_rq_intr(struct smb_rq *rqp) 263{ 264 if (rqp->sr_flags & SMBR_INTR) 265 return EINTR; 266 return smb_td_intr(rqp->sr_cred->scr_td); 267} 268 269int 270smb_rq_getrequest(struct smb_rq *rqp, struct mbchain **mbpp) 271{ 272 *mbpp = &rqp->sr_rq; 273 return 0; 274} 275 276int 277smb_rq_getreply(struct smb_rq *rqp, struct mdchain **mbpp) 278{ 279 *mbpp = &rqp->sr_rp; 280 return 0; 281} 282 283static int 284smb_rq_getenv(struct smb_connobj *layer, 285 struct smb_vc **vcpp, struct smb_share **sspp) 286{ 287 struct smb_vc *vcp = NULL; 288 struct smb_share *ssp = NULL; 289 struct smb_connobj *cp; 290 int error = 0; 291 292 switch (layer->co_level) { 293 case SMBL_VC: 294 vcp = CPTOVC(layer); 295 if (layer->co_parent == NULL) { 296 SMBERROR("zombie VC %s\n", vcp->vc_srvname); 297 error = EINVAL; 298 break; 299 } 300 break; 301 case SMBL_SHARE: 302 ssp = CPTOSS(layer); 303 cp = layer->co_parent; 304 if (cp == NULL) { 305 SMBERROR("zombie share %s\n", ssp->ss_name); 306 error = EINVAL; 307 break; 308 } 309 error = smb_rq_getenv(cp, &vcp, NULL); 310 if (error) 311 break; 312 break; 313 default: 314 SMBERROR("invalid layer %d passed\n", layer->co_level); 315 error = EINVAL; 316 } 317 if (vcpp) 318 *vcpp = vcp; 319 if (sspp) 320 *sspp = ssp; 321 return error; 322} 323 324/* 325 * Wait for reply on the request 326 */ 327static int 328smb_rq_reply(struct smb_rq *rqp) 329{ 330 struct mdchain *mdp = &rqp->sr_rp; 331 u_int32_t tdw; 332 u_int8_t tb; 333 int error, rperror = 0; 334 335 error = smb_iod_waitrq(rqp); 336 if (error) 337 return error; 338 error = md_get_uint32(mdp, &tdw); 339 if (error) 340 return error; 341 error = md_get_uint8(mdp, &tb); 342 if (rqp->sr_vc->vc_hflags2 & SMB_FLAGS2_ERR_STATUS) { 343 error = md_get_uint32le(mdp, &rqp->sr_error); 344 } else { 345 error = md_get_uint8(mdp, &rqp->sr_errclass); 346 error = md_get_uint8(mdp, &tb); 347 error = md_get_uint16le(mdp, &rqp->sr_serror); 348 if (!error) 349 rperror = smb_maperror(rqp->sr_errclass, rqp->sr_serror); 350 } 351 error = md_get_uint8(mdp, &rqp->sr_rpflags); 352 error = md_get_uint16le(mdp, &rqp->sr_rpflags2); 353 354 error = md_get_uint32(mdp, &tdw); 355 error = md_get_uint32(mdp, &tdw); 356 error = md_get_uint32(mdp, &tdw); 357 358 error = md_get_uint16le(mdp, &rqp->sr_rptid); 359 error = md_get_uint16le(mdp, &rqp->sr_rppid); 360 error = md_get_uint16le(mdp, &rqp->sr_rpuid); 361 error = md_get_uint16le(mdp, &rqp->sr_rpmid); 362 363 if (error == 0 && 364 (rqp->sr_vc->vc_hflags2 & SMB_FLAGS2_SECURITY_SIGNATURE)) 365 error = smb_rq_verify(rqp); 366 367 SMBSDEBUG("M:%04x, P:%04x, U:%04x, T:%04x, E: %d:%d\n", 368 rqp->sr_rpmid, rqp->sr_rppid, rqp->sr_rpuid, rqp->sr_rptid, 369 rqp->sr_errclass, rqp->sr_serror); 370 return error ? error : rperror; 371} 372 373 374#define ALIGN4(a) (((a) + 3) & ~3) 375 376/* 377 * TRANS2 request implementation 378 */ 379int 380smb_t2_alloc(struct smb_connobj *layer, u_short setup, struct smb_cred *scred, 381 struct smb_t2rq **t2pp) 382{ 383 struct smb_t2rq *t2p; 384 int error; 385 386 t2p = malloc(sizeof(*t2p), M_SMBRQ, M_WAITOK); 387 if (t2p == NULL) 388 return ENOMEM; 389 error = smb_t2_init(t2p, layer, setup, scred); 390 t2p->t2_flags |= SMBT2_ALLOCED; 391 if (error) { 392 smb_t2_done(t2p); 393 return error; 394 } 395 *t2pp = t2p; 396 return 0; 397} 398 399int 400smb_t2_init(struct smb_t2rq *t2p, struct smb_connobj *source, u_short setup, 401 struct smb_cred *scred) 402{ 403 int error; 404 405 bzero(t2p, sizeof(*t2p)); 406 t2p->t2_source = source; 407 t2p->t2_setupcount = 1; 408 t2p->t2_setupdata = t2p->t2_setup; 409 t2p->t2_setup[0] = setup; 410 t2p->t2_fid = 0xffff; 411 t2p->t2_cred = scred; 412 error = smb_rq_getenv(source, &t2p->t2_vc, NULL); 413 if (error) 414 return error; 415 return 0; 416} 417 418void 419smb_t2_done(struct smb_t2rq *t2p) 420{ 421 mb_done(&t2p->t2_tparam); 422 mb_done(&t2p->t2_tdata); 423 md_done(&t2p->t2_rparam); 424 md_done(&t2p->t2_rdata); 425 if (t2p->t2_flags & SMBT2_ALLOCED) 426 free(t2p, M_SMBRQ); 427} 428 429static int 430smb_t2_placedata(struct mbuf *mtop, u_int16_t offset, u_int16_t count, 431 struct mdchain *mdp) 432{ 433 struct mbuf *m, *m0; 434 int len; 435 436 m0 = m_split(mtop, offset, M_WAIT); 437 len = m_length(m0, &m); 438 m->m_len -= len - count; 439 if (mdp->md_top == NULL) { 440 md_initm(mdp, m0); 441 } else 442 m_cat(mdp->md_top, m0); 443 return 0; 444} 445 446static int 447smb_t2_reply(struct smb_t2rq *t2p) 448{ 449 struct mdchain *mdp; 450 struct smb_rq *rqp = t2p->t2_rq; 451 int error, totpgot, totdgot; 452 u_int16_t totpcount, totdcount, pcount, poff, doff, pdisp, ddisp; 453 u_int16_t tmp, bc, dcount; 454 u_int8_t wc; 455 456 error = smb_rq_reply(rqp); 457 if (error) 458 return error; 459 if ((t2p->t2_flags & SMBT2_ALLSENT) == 0) { 460 /* 461 * this is an interim response, ignore it. 462 */ 463 SMBRQ_SLOCK(rqp); 464 md_next_record(&rqp->sr_rp); 465 SMBRQ_SUNLOCK(rqp); 466 return 0; 467 } 468 /* 469 * Now we have to get all subsequent responses. The CIFS specification 470 * says that they can be disordered which is weird. 471 * TODO: timo 472 */ 473 totpgot = totdgot = 0; 474 totpcount = totdcount = 0xffff; 475 mdp = &rqp->sr_rp; 476 for (;;) { 477 m_dumpm(mdp->md_top); 478 if ((error = md_get_uint8(mdp, &wc)) != 0) 479 break; 480 if (wc < 10) { 481 error = ENOENT; 482 break; 483 } 484 if ((error = md_get_uint16le(mdp, &tmp)) != 0) 485 break; 486 if (totpcount > tmp) 487 totpcount = tmp; 488 md_get_uint16le(mdp, &tmp); 489 if (totdcount > tmp) 490 totdcount = tmp; 491 if ((error = md_get_uint16le(mdp, &tmp)) != 0 || /* reserved */ 492 (error = md_get_uint16le(mdp, &pcount)) != 0 || 493 (error = md_get_uint16le(mdp, &poff)) != 0 || 494 (error = md_get_uint16le(mdp, &pdisp)) != 0) 495 break; 496 if (pcount != 0 && pdisp != totpgot) { 497 SMBERROR("Can't handle disordered parameters %d:%d\n", 498 pdisp, totpgot); 499 error = EINVAL; 500 break; 501 } 502 if ((error = md_get_uint16le(mdp, &dcount)) != 0 || 503 (error = md_get_uint16le(mdp, &doff)) != 0 || 504 (error = md_get_uint16le(mdp, &ddisp)) != 0) 505 break; 506 if (dcount != 0 && ddisp != totdgot) { 507 SMBERROR("Can't handle disordered data\n"); 508 error = EINVAL; 509 break; 510 } 511 md_get_uint8(mdp, &wc); 512 md_get_uint8(mdp, NULL); 513 tmp = wc; 514 while (tmp--) 515 md_get_uint16(mdp, NULL); 516 if ((error = md_get_uint16le(mdp, &bc)) != 0) 517 break; 518/* tmp = SMB_HDRLEN + 1 + 10 * 2 + 2 * wc + 2;*/ 519 if (dcount) { 520 error = smb_t2_placedata(mdp->md_top, doff, dcount, 521 &t2p->t2_rdata); 522 if (error) 523 break; 524 } 525 if (pcount) { 526 error = smb_t2_placedata(mdp->md_top, poff, pcount, 527 &t2p->t2_rparam); 528 if (error) 529 break; 530 } 531 totpgot += pcount; 532 totdgot += dcount; 533 if (totpgot >= totpcount && totdgot >= totdcount) { 534 error = 0; 535 t2p->t2_flags |= SMBT2_ALLRECV; 536 break; 537 } 538 /* 539 * We're done with this reply, look for the next one. 540 */ 541 SMBRQ_SLOCK(rqp); 542 md_next_record(&rqp->sr_rp); 543 SMBRQ_SUNLOCK(rqp); 544 error = smb_rq_reply(rqp); 545 if (error) 546 break; 547 } 548 return error; 549} 550 551/* 552 * Perform a full round of TRANS2 request 553 */ 554static int 555smb_t2_request_int(struct smb_t2rq *t2p) 556{ 557 struct smb_vc *vcp = t2p->t2_vc; 558 struct smb_cred *scred = t2p->t2_cred; 559 struct mbchain *mbp; 560 struct mdchain *mdp, mbparam, mbdata; 561 struct mbuf *m; 562 struct smb_rq *rqp; 563 int totpcount, leftpcount, totdcount, leftdcount, len, txmax, i; 564 int error, doff, poff, txdcount, txpcount, nmlen; 565 566 m = t2p->t2_tparam.mb_top; 567 if (m) { 568 md_initm(&mbparam, m); /* do not free it! */ 569 totpcount = m_fixhdr(m); 570 if (totpcount > 0xffff) /* maxvalue for u_short */ 571 return EINVAL; 572 } else 573 totpcount = 0; 574 m = t2p->t2_tdata.mb_top; 575 if (m) { 576 md_initm(&mbdata, m); /* do not free it! */ 577 totdcount = m_fixhdr(m); 578 if (totdcount > 0xffff) 579 return EINVAL; 580 } else 581 totdcount = 0; 582 leftdcount = totdcount; 583 leftpcount = totpcount; 584 txmax = vcp->vc_txmax; 585 error = smb_rq_alloc(t2p->t2_source, t2p->t_name ? 586 SMB_COM_TRANSACTION : SMB_COM_TRANSACTION2, scred, &rqp); 587 if (error) 588 return error; 589 rqp->sr_flags |= SMBR_MULTIPACKET; 590 t2p->t2_rq = rqp; 591 rqp->sr_t2 = t2p; 592 mbp = &rqp->sr_rq; 593 smb_rq_wstart(rqp); 594 mb_put_uint16le(mbp, totpcount); 595 mb_put_uint16le(mbp, totdcount); 596 mb_put_uint16le(mbp, t2p->t2_maxpcount); 597 mb_put_uint16le(mbp, t2p->t2_maxdcount); 598 mb_put_uint8(mbp, t2p->t2_maxscount); 599 mb_put_uint8(mbp, 0); /* reserved */ 600 mb_put_uint16le(mbp, 0); /* flags */ 601 mb_put_uint32le(mbp, 0); /* Timeout */ 602 mb_put_uint16le(mbp, 0); /* reserved 2 */ 603 len = mb_fixhdr(mbp); 604 /* 605 * now we have known packet size as 606 * ALIGN4(len + 5 * 2 + setupcount * 2 + 2 + strlen(name) + 1), 607 * and need to decide which parts should go into the first request 608 */ 609 nmlen = t2p->t_name ? strlen(t2p->t_name) : 0; 610 len = ALIGN4(len + 5 * 2 + t2p->t2_setupcount * 2 + 2 + nmlen + 1); 611 if (len + leftpcount > txmax) { 612 txpcount = min(leftpcount, txmax - len); 613 poff = len; 614 txdcount = 0; 615 doff = 0; 616 } else { 617 txpcount = leftpcount; 618 poff = txpcount ? len : 0; 619 len = ALIGN4(len + txpcount); 620 txdcount = min(leftdcount, txmax - len); 621 doff = txdcount ? len : 0; 622 } 623 leftpcount -= txpcount; 624 leftdcount -= txdcount; 625 mb_put_uint16le(mbp, txpcount); 626 mb_put_uint16le(mbp, poff); 627 mb_put_uint16le(mbp, txdcount); 628 mb_put_uint16le(mbp, doff); 629 mb_put_uint8(mbp, t2p->t2_setupcount); 630 mb_put_uint8(mbp, 0); 631 for (i = 0; i < t2p->t2_setupcount; i++) 632 mb_put_uint16le(mbp, t2p->t2_setupdata[i]); 633 smb_rq_wend(rqp); 634 smb_rq_bstart(rqp); 635 /* TDUNICODE */ 636 if (t2p->t_name) 637 mb_put_mem(mbp, t2p->t_name, nmlen, MB_MSYSTEM); 638 mb_put_uint8(mbp, 0); /* terminating zero */ 639 len = mb_fixhdr(mbp); 640 if (txpcount) { 641 mb_put_mem(mbp, NULL, ALIGN4(len) - len, MB_MZERO); 642 error = md_get_mbuf(&mbparam, txpcount, &m); 643 SMBSDEBUG("%d:%d:%d\n", error, txpcount, txmax); 644 if (error) 645 goto freerq; 646 mb_put_mbuf(mbp, m); 647 } 648 len = mb_fixhdr(mbp); 649 if (txdcount) { 650 mb_put_mem(mbp, NULL, ALIGN4(len) - len, MB_MZERO); 651 error = md_get_mbuf(&mbdata, txdcount, &m); 652 if (error) 653 goto freerq; 654 mb_put_mbuf(mbp, m); 655 } 656 smb_rq_bend(rqp); /* incredible, but thats it... */ 657 error = smb_rq_enqueue(rqp); 658 if (error) 659 goto freerq; 660 if (leftpcount == 0 && leftdcount == 0) 661 t2p->t2_flags |= SMBT2_ALLSENT; 662 error = smb_t2_reply(t2p); 663 if (error) 664 goto bad; 665 while (leftpcount || leftdcount) { 666 t2p->t2_flags |= SMBT2_SECONDARY; 667 error = smb_rq_new(rqp, t2p->t_name ? 668 SMB_COM_TRANSACTION_SECONDARY : SMB_COM_TRANSACTION2_SECONDARY); 669 if (error) 670 goto bad; 671 mbp = &rqp->sr_rq; 672 smb_rq_wstart(rqp); 673 mb_put_uint16le(mbp, totpcount); 674 mb_put_uint16le(mbp, totdcount); 675 len = mb_fixhdr(mbp); 676 /* 677 * now we have known packet size as 678 * ALIGN4(len + 7 * 2 + 2) for T2 request, and -2 for T one, 679 * and need to decide which parts should go into request 680 */ 681 len = ALIGN4(len + 6 * 2 + 2); 682 if (t2p->t_name == NULL) 683 len += 2; 684 if (len + leftpcount > txmax) { 685 txpcount = min(leftpcount, txmax - len); 686 poff = len; 687 txdcount = 0; 688 doff = 0; 689 } else { 690 txpcount = leftpcount; 691 poff = txpcount ? len : 0; 692 len = ALIGN4(len + txpcount); 693 txdcount = min(leftdcount, txmax - len); 694 doff = txdcount ? len : 0; 695 } 696 mb_put_uint16le(mbp, txpcount); 697 mb_put_uint16le(mbp, poff); 698 mb_put_uint16le(mbp, totpcount - leftpcount); 699 mb_put_uint16le(mbp, txdcount); 700 mb_put_uint16le(mbp, doff); 701 mb_put_uint16le(mbp, totdcount - leftdcount); 702 leftpcount -= txpcount; 703 leftdcount -= txdcount; 704 if (t2p->t_name == NULL) 705 mb_put_uint16le(mbp, t2p->t2_fid); 706 smb_rq_wend(rqp); 707 smb_rq_bstart(rqp); 708 mb_put_uint8(mbp, 0); /* name */ 709 len = mb_fixhdr(mbp); 710 if (txpcount) { 711 mb_put_mem(mbp, NULL, ALIGN4(len) - len, MB_MZERO); 712 error = md_get_mbuf(&mbparam, txpcount, &m); 713 if (error) 714 goto bad; 715 mb_put_mbuf(mbp, m); 716 } 717 len = mb_fixhdr(mbp); 718 if (txdcount) { 719 mb_put_mem(mbp, NULL, ALIGN4(len) - len, MB_MZERO); 720 error = md_get_mbuf(&mbdata, txdcount, &m); 721 if (error) 722 goto bad; 723 mb_put_mbuf(mbp, m); 724 } 725 smb_rq_bend(rqp); 726 rqp->sr_state = SMBRQ_NOTSENT; 727 error = smb_iod_request(vcp->vc_iod, SMBIOD_EV_NEWRQ, NULL); 728 if (error) 729 goto bad; 730 } /* while left params or data */ 731 t2p->t2_flags |= SMBT2_ALLSENT; 732 mdp = &t2p->t2_rdata; 733 if (mdp->md_top) { 734 m_fixhdr(mdp->md_top); 735 md_initm(mdp, mdp->md_top); 736 } 737 mdp = &t2p->t2_rparam; 738 if (mdp->md_top) { 739 m_fixhdr(mdp->md_top); 740 md_initm(mdp, mdp->md_top); 741 } 742bad: 743 smb_iod_removerq(rqp); 744freerq: 745 smb_rq_done(rqp); 746 if (error) { 747 if (rqp->sr_flags & SMBR_RESTART) 748 t2p->t2_flags |= SMBT2_RESTART; 749 md_done(&t2p->t2_rparam); 750 md_done(&t2p->t2_rdata); 751 } 752 return error; 753} 754 755int 756smb_t2_request(struct smb_t2rq *t2p) 757{ 758 int error = EINVAL, i; 759 760 for (i = 0; i < SMB_MAXRCN; i++) { 761 t2p->t2_flags &= ~SMBR_RESTART; 762 error = smb_t2_request_int(t2p); 763 if (error == 0) 764 break; 765 if ((t2p->t2_flags & (SMBT2_RESTART | SMBT2_NORESTART)) != SMBT2_RESTART) 766 break; 767 } 768 return error; 769} 770