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 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27/* 28 * Connection engine. 29 */ 30 31#include <sys/cdefs.h> 32__FBSDID("$FreeBSD$"); 33 34#include <sys/param.h> 35#include <sys/systm.h> 36#include <sys/kernel.h> 37#include <sys/malloc.h> 38#include <sys/priv.h> 39#include <sys/proc.h> 40#include <sys/lock.h> 41#include <sys/sysctl.h> 42#include <sys/socketvar.h> 43 44#include <sys/iconv.h> 45 46#include <netsmb/smb.h> 47#include <netsmb/smb_subr.h> 48#include <netsmb/smb_conn.h> 49#include <netsmb/smb_tran.h> 50#include <netsmb/smb_trantcp.h> 51 52static struct smb_connobj smb_vclist; 53static int smb_vcnext = 1; /* next unique id for VC */ 54 55SYSCTL_NODE(_net, OID_AUTO, smb, CTLFLAG_RW, NULL, "SMB protocol"); 56 57static MALLOC_DEFINE(M_SMBCONN, "smb_conn", "SMB connection"); 58 59static void smb_co_init(struct smb_connobj *cp, int level, char *ilockname, 60 char *lockname); 61static void smb_co_done(struct smb_connobj *cp); 62static int smb_co_lockstatus(struct smb_connobj *cp); 63 64static int smb_vc_disconnect(struct smb_vc *vcp); 65static void smb_vc_free(struct smb_connobj *cp); 66static void smb_vc_gone(struct smb_connobj *cp, struct smb_cred *scred); 67static smb_co_free_t smb_share_free; 68static smb_co_gone_t smb_share_gone; 69 70static int smb_sysctl_treedump(SYSCTL_HANDLER_ARGS); 71 72SYSCTL_PROC(_net_smb, OID_AUTO, treedump, CTLFLAG_RD | CTLTYPE_OPAQUE, 73 NULL, 0, smb_sysctl_treedump, "S,treedump", "Requester tree"); 74 75int 76smb_sm_init(void) 77{ 78 79 smb_co_init(&smb_vclist, SMBL_SM, "smbsm ilock", "smbsm"); 80 smb_co_unlock(&smb_vclist, 0); 81 return 0; 82} 83 84int 85smb_sm_done(void) 86{ 87 88 /* XXX: hold the mutex */ 89 if (smb_vclist.co_usecount > 1) { 90 SMBERROR("%d connections still active\n", smb_vclist.co_usecount - 1); 91 return EBUSY; 92 } 93 lockmgr(&smb_vclist.co_lock, LK_DRAIN, NULL); 94 smb_co_done(&smb_vclist); 95 return 0; 96} 97 98static int 99smb_sm_lockvclist(int flags) 100{ 101 102 return smb_co_lock(&smb_vclist, flags | LK_CANRECURSE); 103} 104 105static void 106smb_sm_unlockvclist(void) 107{ 108 109 smb_co_unlock(&smb_vclist, LK_RELEASE); 110} 111 112static int 113smb_sm_lookupint(struct smb_vcspec *vcspec, struct smb_sharespec *shspec, 114 struct smb_cred *scred, struct smb_vc **vcpp) 115{ 116 struct smb_connobj *scp; 117 struct smb_vc *vcp; 118 int exact = 1; 119 int error; 120 121 vcspec->shspec = shspec; 122 error = ENOENT; 123 vcp = NULL; 124 SMBCO_FOREACH(scp, &smb_vclist) { 125 vcp = (struct smb_vc *)scp; 126 error = smb_vc_lock(vcp, LK_EXCLUSIVE); 127 if (error) 128 continue; 129 130 if ((vcp->obj.co_flags & SMBV_PRIVATE) || 131 !CONNADDREQ(vcp->vc_paddr, vcspec->sap) || 132 strcmp(vcp->vc_username, vcspec->username) != 0) 133 goto err1; 134 if (vcspec->owner != SMBM_ANY_OWNER) { 135 if (vcp->vc_uid != vcspec->owner) 136 goto err1; 137 } else 138 exact = 0; 139 if (vcspec->group != SMBM_ANY_GROUP) { 140 if (vcp->vc_grp != vcspec->group) 141 goto err1; 142 } else 143 exact = 0; 144 if (vcspec->mode & SMBM_EXACT) { 145 if (!exact || (vcspec->mode & SMBM_MASK) != 146 vcp->vc_mode) 147 goto err1; 148 } 149 if (smb_vc_access(vcp, scred, vcspec->mode) != 0) 150 goto err1; 151 vcspec->ssp = NULL; 152 if (shspec) { 153 error = (int)smb_vc_lookupshare(vcp, shspec, scred, 154 &vcspec->ssp); 155 if (error) 156 goto fail; 157 } 158 error = 0; 159 break; 160 err1: 161 error = 1; 162 fail: 163 smb_vc_unlock(vcp, 0); 164 } 165 if (vcp) { 166 smb_vc_ref(vcp); 167 *vcpp = vcp; 168 } 169 return (error); 170} 171 172int 173smb_sm_lookup(struct smb_vcspec *vcspec, struct smb_sharespec *shspec, 174 struct smb_cred *scred, struct smb_vc **vcpp) 175{ 176 struct smb_vc *vcp; 177 struct smb_share *ssp = NULL; 178 int error; 179 180 *vcpp = vcp = NULL; 181 182 error = smb_sm_lockvclist(LK_EXCLUSIVE); 183 if (error) 184 return error; 185 error = smb_sm_lookupint(vcspec, shspec, scred, vcpp); 186 if (error == 0 || (vcspec->flags & SMBV_CREATE) == 0) { 187 smb_sm_unlockvclist(); 188 return error; 189 } 190 error = smb_sm_lookupint(vcspec, NULL, scred, &vcp); 191 if (error) { 192 error = smb_vc_create(vcspec, scred, &vcp); 193 if (error) 194 goto out; 195 error = smb_vc_connect(vcp, scred); 196 if (error) 197 goto out; 198 } 199 if (shspec == NULL) 200 goto out; 201 error = smb_share_create(vcp, shspec, scred, &ssp); 202 if (error) 203 goto out; 204 error = smb_smb_treeconnect(ssp, scred); 205 if (error == 0) 206 vcspec->ssp = ssp; 207 else 208 smb_share_put(ssp, scred); 209out: 210 smb_sm_unlockvclist(); 211 if (error == 0) 212 *vcpp = vcp; 213 else if (vcp) { 214 smb_vc_lock(vcp, LK_EXCLUSIVE); 215 smb_vc_put(vcp, scred); 216 } 217 return error; 218} 219 220/* 221 * Common code for connection object 222 */ 223static void 224smb_co_init(struct smb_connobj *cp, int level, char *ilockname, char *lockname) 225{ 226 SLIST_INIT(&cp->co_children); 227 smb_sl_init(&cp->co_interlock, ilockname); 228 lockinit(&cp->co_lock, PZERO, lockname, 0, 0); 229 cp->co_level = level; 230 cp->co_usecount = 1; 231 if (smb_co_lock(cp, LK_EXCLUSIVE) != 0) 232 panic("smb_co_init: lock failed"); 233} 234 235static void 236smb_co_done(struct smb_connobj *cp) 237{ 238 smb_sl_destroy(&cp->co_interlock); 239 lockmgr(&cp->co_lock, LK_RELEASE, NULL); 240 lockdestroy(&cp->co_lock); 241} 242 243static void 244smb_co_gone(struct smb_connobj *cp, struct smb_cred *scred) 245{ 246 struct smb_connobj *parent; 247 248 if (cp->co_gone) 249 cp->co_gone(cp, scred); 250 parent = cp->co_parent; 251 if (parent) { 252 smb_co_lock(parent, LK_EXCLUSIVE); 253 SLIST_REMOVE(&parent->co_children, cp, smb_connobj, co_next); 254 smb_co_put(parent, scred); 255 } 256 if (cp->co_free) 257 cp->co_free(cp); 258} 259 260void 261smb_co_ref(struct smb_connobj *cp) 262{ 263 264 SMB_CO_LOCK(cp); 265 cp->co_usecount++; 266 SMB_CO_UNLOCK(cp); 267} 268 269void 270smb_co_rele(struct smb_connobj *cp, struct smb_cred *scred) 271{ 272 273 SMB_CO_LOCK(cp); 274 if (cp->co_usecount > 1) { 275 cp->co_usecount--; 276 SMB_CO_UNLOCK(cp); 277 return; 278 } 279 if (cp->co_usecount == 0) { 280 SMBERROR("negative use_count for object %d", cp->co_level); 281 SMB_CO_UNLOCK(cp); 282 return; 283 } 284 cp->co_usecount--; 285 cp->co_flags |= SMBO_GONE; 286 287 lockmgr(&cp->co_lock, LK_DRAIN | LK_INTERLOCK, &cp->co_interlock); 288 smb_co_gone(cp, scred); 289} 290 291int 292smb_co_get(struct smb_connobj *cp, int flags, struct smb_cred *scred) 293{ 294 int error; 295 296 if ((flags & LK_INTERLOCK) == 0) 297 SMB_CO_LOCK(cp); 298 cp->co_usecount++; 299 error = smb_co_lock(cp, flags | LK_INTERLOCK); 300 if (error) { 301 SMB_CO_LOCK(cp); 302 cp->co_usecount--; 303 SMB_CO_UNLOCK(cp); 304 return error; 305 } 306 return 0; 307} 308 309void 310smb_co_put(struct smb_connobj *cp, struct smb_cred *scred) 311{ 312 313 SMB_CO_LOCK(cp); 314 if (cp->co_usecount > 1) { 315 cp->co_usecount--; 316 } else if (cp->co_usecount == 1) { 317 cp->co_usecount--; 318 cp->co_flags |= SMBO_GONE; 319 } else { 320 SMBERROR("negative usecount"); 321 } 322 lockmgr(&cp->co_lock, LK_RELEASE | LK_INTERLOCK, &cp->co_interlock); 323 if ((cp->co_flags & SMBO_GONE) == 0) 324 return; 325 lockmgr(&cp->co_lock, LK_DRAIN, NULL); 326 smb_co_gone(cp, scred); 327} 328 329int 330smb_co_lockstatus(struct smb_connobj *cp) 331{ 332 return lockstatus(&cp->co_lock); 333} 334 335int 336smb_co_lock(struct smb_connobj *cp, int flags) 337{ 338 339 if (cp->co_flags & SMBO_GONE) 340 return EINVAL; 341 if ((flags & LK_TYPE_MASK) == 0) 342 flags |= LK_EXCLUSIVE; 343 if (smb_co_lockstatus(cp) == LK_EXCLUSIVE && 344 (flags & LK_CANRECURSE) == 0) { 345 SMBERROR("recursive lock for object %d\n", cp->co_level); 346 return 0; 347 } 348 return lockmgr(&cp->co_lock, flags, &cp->co_interlock); 349} 350 351void 352smb_co_unlock(struct smb_connobj *cp, int flags) 353{ 354 (void)lockmgr(&cp->co_lock, flags | LK_RELEASE, &cp->co_interlock); 355} 356 357static void 358smb_co_addchild(struct smb_connobj *parent, struct smb_connobj *child) 359{ 360 361 KASSERT(smb_co_lockstatus(parent) == LK_EXCLUSIVE, 362 ("smb_co_addchild: parent not locked")); 363 KASSERT(smb_co_lockstatus(child) == LK_EXCLUSIVE, 364 ("smb_co_addchild: child not locked")); 365 366 smb_co_ref(parent); 367 SLIST_INSERT_HEAD(&parent->co_children, child, co_next); 368 child->co_parent = parent; 369} 370 371/* 372 * Session implementation 373 */ 374 375int 376smb_vc_create(struct smb_vcspec *vcspec, 377 struct smb_cred *scred, struct smb_vc **vcpp) 378{ 379 struct smb_vc *vcp; 380 struct ucred *cred = scred->scr_cred; 381 uid_t uid = vcspec->owner; 382 gid_t gid = vcspec->group; 383 uid_t realuid = cred->cr_uid; 384 char *domain = vcspec->domain; 385 int error, isroot; 386 387 isroot = smb_suser(cred) == 0; 388 /* 389 * Only superuser can create VCs with different uid and gid 390 */ 391 if (uid != SMBM_ANY_OWNER && uid != realuid && !isroot) 392 return EPERM; 393 if (gid != SMBM_ANY_GROUP && !groupmember(gid, cred) && !isroot) 394 return EPERM; 395 396 vcp = smb_zmalloc(sizeof(*vcp), M_SMBCONN, M_WAITOK); 397 smb_co_init(VCTOCP(vcp), SMBL_VC, "smb_vc ilock", "smb_vc"); 398 vcp->obj.co_free = smb_vc_free; 399 vcp->obj.co_gone = smb_vc_gone; 400 vcp->vc_number = smb_vcnext++; 401 vcp->vc_timo = SMB_DEFRQTIMO; 402 vcp->vc_smbuid = SMB_UID_UNKNOWN; 403 vcp->vc_mode = vcspec->rights & SMBM_MASK; 404 vcp->obj.co_flags = vcspec->flags & (SMBV_PRIVATE | SMBV_SINGLESHARE); 405 vcp->vc_tdesc = &smb_tran_nbtcp_desc; 406 vcp->vc_seqno = 0; 407 vcp->vc_mackey = NULL; 408 vcp->vc_mackeylen = 0; 409 410 if (uid == SMBM_ANY_OWNER) 411 uid = realuid; 412 if (gid == SMBM_ANY_GROUP) 413 gid = cred->cr_groups[0]; 414 vcp->vc_uid = uid; 415 vcp->vc_grp = gid; 416 417 smb_sl_init(&vcp->vc_stlock, "vcstlock"); 418 error = ENOMEM; 419 420 vcp->vc_paddr = sodupsockaddr(vcspec->sap, M_WAITOK); 421 if (vcp->vc_paddr == NULL) 422 goto fail; 423 vcp->vc_laddr = sodupsockaddr(vcspec->lap, M_WAITOK); 424 if (vcp->vc_laddr == NULL) 425 goto fail; 426 vcp->vc_pass = smb_strdup(vcspec->pass); 427 if (vcp->vc_pass == NULL) 428 goto fail; 429 vcp->vc_domain = smb_strdup((domain && domain[0]) ? domain : 430 "NODOMAIN"); 431 if (vcp->vc_domain == NULL) 432 goto fail; 433 vcp->vc_srvname = smb_strdup(vcspec->srvname); 434 if (vcp->vc_srvname == NULL) 435 goto fail; 436 vcp->vc_username = smb_strdup(vcspec->username); 437 if (vcp->vc_username == NULL) 438 goto fail; 439 error = (int)iconv_open("tolower", vcspec->localcs, &vcp->vc_tolower); 440 if (error) 441 goto fail; 442 error = (int)iconv_open("toupper", vcspec->localcs, &vcp->vc_toupper); 443 if (error) 444 goto fail; 445 if (vcspec->servercs[0]) { 446 error = (int)iconv_open(vcspec->servercs, vcspec->localcs, 447 &vcp->vc_cp_toserver); 448 if (error) 449 goto fail; 450 error = (int)iconv_open(vcspec->localcs, vcspec->servercs, 451 &vcp->vc_cp_tolocal); 452 if (error) 453 goto fail; 454 vcp->vc_toserver = vcp->vc_cp_toserver; 455 vcp->vc_tolocal = vcp->vc_cp_tolocal; 456 iconv_add(ENCODING_UNICODE, ENCODING_UNICODE, SMB_UNICODE_NAME); 457 iconv_add(ENCODING_UNICODE, SMB_UNICODE_NAME, ENCODING_UNICODE); 458 error = (int)iconv_open(SMB_UNICODE_NAME, vcspec->localcs, 459 &vcp->vc_ucs_toserver); 460 if (!error) { 461 error = (int)iconv_open(vcspec->localcs, SMB_UNICODE_NAME, 462 &vcp->vc_ucs_tolocal); 463 } 464 if (error) { 465 if (vcp->vc_ucs_toserver) 466 iconv_close(vcp->vc_ucs_toserver); 467 vcp->vc_ucs_toserver = NULL; 468 vcp->vc_ucs_tolocal = NULL; 469 } 470 } 471 error = (int)smb_iod_create(vcp); 472 if (error) 473 goto fail; 474 *vcpp = vcp; 475 smb_co_addchild(&smb_vclist, VCTOCP(vcp)); 476 return (0); 477 478 fail: 479 smb_vc_put(vcp, scred); 480 return (error); 481} 482 483static void 484smb_vc_free(struct smb_connobj *cp) 485{ 486 struct smb_vc *vcp = CPTOVC(cp); 487 488 if (vcp->vc_iod) 489 smb_iod_destroy(vcp->vc_iod); 490 SMB_STRFREE(vcp->vc_username); 491 SMB_STRFREE(vcp->vc_srvname); 492 SMB_STRFREE(vcp->vc_pass); 493 SMB_STRFREE(vcp->vc_domain); 494 if (vcp->vc_mackey) 495 free(vcp->vc_mackey, M_SMBTEMP); 496 if (vcp->vc_paddr) 497 free(vcp->vc_paddr, M_SONAME); 498 if (vcp->vc_laddr) 499 free(vcp->vc_laddr, M_SONAME); 500 if (vcp->vc_tolower) 501 iconv_close(vcp->vc_tolower); 502 if (vcp->vc_toupper) 503 iconv_close(vcp->vc_toupper); 504 if (vcp->vc_tolocal) 505 vcp->vc_tolocal = NULL; 506 if (vcp->vc_toserver) 507 vcp->vc_toserver = NULL; 508 if (vcp->vc_cp_tolocal) 509 iconv_close(vcp->vc_cp_tolocal); 510 if (vcp->vc_cp_toserver) 511 iconv_close(vcp->vc_cp_toserver); 512 if (vcp->vc_ucs_tolocal) 513 iconv_close(vcp->vc_ucs_tolocal); 514 if (vcp->vc_ucs_toserver) 515 iconv_close(vcp->vc_ucs_toserver); 516 smb_co_done(VCTOCP(vcp)); 517 smb_sl_destroy(&vcp->vc_stlock); 518 free(vcp, M_SMBCONN); 519} 520 521/* 522 * Called when use count of VC dropped to zero. 523 * VC should be locked on enter with LK_DRAIN. 524 */ 525static void 526smb_vc_gone(struct smb_connobj *cp, struct smb_cred *scred) 527{ 528 struct smb_vc *vcp = CPTOVC(cp); 529 530 smb_vc_disconnect(vcp); 531} 532 533void 534smb_vc_ref(struct smb_vc *vcp) 535{ 536 smb_co_ref(VCTOCP(vcp)); 537} 538 539void 540smb_vc_rele(struct smb_vc *vcp, struct smb_cred *scred) 541{ 542 smb_co_rele(VCTOCP(vcp), scred); 543} 544 545int 546smb_vc_get(struct smb_vc *vcp, int flags, struct smb_cred *scred) 547{ 548 return smb_co_get(VCTOCP(vcp), flags, scred); 549} 550 551void 552smb_vc_put(struct smb_vc *vcp, struct smb_cred *scred) 553{ 554 smb_co_put(VCTOCP(vcp), scred); 555} 556 557int 558smb_vc_lock(struct smb_vc *vcp, int flags) 559{ 560 return smb_co_lock(VCTOCP(vcp), flags); 561} 562 563void 564smb_vc_unlock(struct smb_vc *vcp, int flags) 565{ 566 smb_co_unlock(VCTOCP(vcp), flags); 567} 568 569int 570smb_vc_access(struct smb_vc *vcp, struct smb_cred *scred, mode_t mode) 571{ 572 struct ucred *cred = scred->scr_cred; 573 574 if (smb_suser(cred) == 0 || cred->cr_uid == vcp->vc_uid) 575 return 0; 576 mode >>= 3; 577 if (!groupmember(vcp->vc_grp, cred)) 578 mode >>= 3; 579 return (vcp->vc_mode & mode) == mode ? 0 : EACCES; 580} 581 582static int 583smb_vc_cmpshare(struct smb_share *ssp, struct smb_sharespec *dp) 584{ 585 int exact = 1; 586 587 if (strcmp(ssp->ss_name, dp->name) != 0) 588 return 1; 589 if (dp->owner != SMBM_ANY_OWNER) { 590 if (ssp->ss_uid != dp->owner) 591 return 1; 592 } else 593 exact = 0; 594 if (dp->group != SMBM_ANY_GROUP) { 595 if (ssp->ss_grp != dp->group) 596 return 1; 597 } else 598 exact = 0; 599 600 if (dp->mode & SMBM_EXACT) { 601 if (!exact) 602 return 1; 603 return (dp->mode & SMBM_MASK) == ssp->ss_mode ? 0 : 1; 604 } 605 if (smb_share_access(ssp, dp->scred, dp->mode) != 0) 606 return 1; 607 return 0; 608} 609 610/* 611 * Lookup share in the given VC. Share referenced and locked on return. 612 * VC expected to be locked on entry and will be left locked on exit. 613 */ 614int 615smb_vc_lookupshare(struct smb_vc *vcp, struct smb_sharespec *dp, 616 struct smb_cred *scred, struct smb_share **sspp) 617{ 618 struct smb_connobj *scp = NULL; 619 struct smb_share *ssp = NULL; 620 int error; 621 622 *sspp = NULL; 623 dp->scred = scred; 624 SMBCO_FOREACH(scp, VCTOCP(vcp)) { 625 ssp = (struct smb_share *)scp; 626 error = smb_share_lock(ssp, LK_EXCLUSIVE); 627 if (error) 628 continue; 629 if (smb_vc_cmpshare(ssp, dp) == 0) 630 break; 631 smb_share_unlock(ssp, 0); 632 } 633 if (ssp) { 634 smb_share_ref(ssp); 635 *sspp = ssp; 636 error = 0; 637 } else 638 error = ENOENT; 639 return error; 640} 641 642int 643smb_vc_connect(struct smb_vc *vcp, struct smb_cred *scred) 644{ 645 646 return smb_iod_request(vcp->vc_iod, SMBIOD_EV_CONNECT | SMBIOD_EV_SYNC, NULL); 647} 648 649/* 650 * Destroy VC to server, invalidate shares linked with it. 651 * Transport should be locked on entry. 652 */ 653int 654smb_vc_disconnect(struct smb_vc *vcp) 655{ 656 657 smb_iod_request(vcp->vc_iod, SMBIOD_EV_DISCONNECT | SMBIOD_EV_SYNC, NULL); 658 return 0; 659} 660 661static char smb_emptypass[] = ""; 662 663const char * 664smb_vc_getpass(struct smb_vc *vcp) 665{ 666 if (vcp->vc_pass) 667 return vcp->vc_pass; 668 return smb_emptypass; 669} 670 671static int 672smb_vc_getinfo(struct smb_vc *vcp, struct smb_vc_info *vip) 673{ 674 bzero(vip, sizeof(struct smb_vc_info)); 675 vip->itype = SMB_INFO_VC; 676 vip->usecount = vcp->obj.co_usecount; 677 vip->uid = vcp->vc_uid; 678 vip->gid = vcp->vc_grp; 679 vip->mode = vcp->vc_mode; 680 vip->flags = vcp->obj.co_flags; 681 vip->sopt = vcp->vc_sopt; 682 vip->iodstate = vcp->vc_iod->iod_state; 683 bzero(&vip->sopt.sv_skey, sizeof(vip->sopt.sv_skey)); 684 snprintf(vip->srvname, sizeof(vip->srvname), "%s", vcp->vc_srvname); 685 snprintf(vip->vcname, sizeof(vip->vcname), "%s", vcp->vc_username); 686 return 0; 687} 688 689u_short 690smb_vc_nextmid(struct smb_vc *vcp) 691{ 692 u_short r; 693 694 SMB_CO_LOCK(&vcp->obj); 695 r = vcp->vc_mid++; 696 SMB_CO_UNLOCK(&vcp->obj); 697 return r; 698} 699 700/* 701 * Share implementation 702 */ 703/* 704 * Allocate share structure and attach it to the given VC 705 * Connection expected to be locked on entry. Share will be returned 706 * in locked state. 707 */ 708int 709smb_share_create(struct smb_vc *vcp, struct smb_sharespec *shspec, 710 struct smb_cred *scred, struct smb_share **sspp) 711{ 712 struct smb_share *ssp; 713 struct ucred *cred = scred->scr_cred; 714 uid_t realuid = cred->cr_uid; 715 uid_t uid = shspec->owner; 716 gid_t gid = shspec->group; 717 int error, isroot; 718 719 isroot = smb_suser(cred) == 0; 720 /* 721 * Only superuser can create shares with different uid and gid 722 */ 723 if (uid != SMBM_ANY_OWNER && uid != realuid && !isroot) 724 return EPERM; 725 if (gid != SMBM_ANY_GROUP && !groupmember(gid, cred) && !isroot) 726 return EPERM; 727 error = smb_vc_lookupshare(vcp, shspec, scred, &ssp); 728 if (!error) { 729 smb_share_put(ssp, scred); 730 return EEXIST; 731 } 732 if (uid == SMBM_ANY_OWNER) 733 uid = realuid; 734 if (gid == SMBM_ANY_GROUP) 735 gid = cred->cr_groups[0]; 736 ssp = smb_zmalloc(sizeof(*ssp), M_SMBCONN, M_WAITOK); 737 smb_co_init(SSTOCP(ssp), SMBL_SHARE, "smbss ilock", "smbss"); 738 ssp->obj.co_free = smb_share_free; 739 ssp->obj.co_gone = smb_share_gone; 740 smb_sl_init(&ssp->ss_stlock, "ssstlock"); 741 ssp->ss_name = smb_strdup(shspec->name); 742 if (shspec->pass && shspec->pass[0]) 743 ssp->ss_pass = smb_strdup(shspec->pass); 744 ssp->ss_type = shspec->stype; 745 ssp->ss_tid = SMB_TID_UNKNOWN; 746 ssp->ss_uid = uid; 747 ssp->ss_grp = gid; 748 ssp->ss_mode = shspec->rights & SMBM_MASK; 749 smb_co_addchild(VCTOCP(vcp), SSTOCP(ssp)); 750 *sspp = ssp; 751 return 0; 752} 753 754static void 755smb_share_free(struct smb_connobj *cp) 756{ 757 struct smb_share *ssp = CPTOSS(cp); 758 759 SMB_STRFREE(ssp->ss_name); 760 SMB_STRFREE(ssp->ss_pass); 761 smb_sl_destroy(&ssp->ss_stlock); 762 smb_co_done(SSTOCP(ssp)); 763 free(ssp, M_SMBCONN); 764} 765 766static void 767smb_share_gone(struct smb_connobj *cp, struct smb_cred *scred) 768{ 769 struct smb_share *ssp = CPTOSS(cp); 770 771 smb_smb_treedisconnect(ssp, scred); 772} 773 774void 775smb_share_ref(struct smb_share *ssp) 776{ 777 smb_co_ref(SSTOCP(ssp)); 778} 779 780void 781smb_share_rele(struct smb_share *ssp, struct smb_cred *scred) 782{ 783 smb_co_rele(SSTOCP(ssp), scred); 784} 785 786int 787smb_share_get(struct smb_share *ssp, int flags, struct smb_cred *scred) 788{ 789 return smb_co_get(SSTOCP(ssp), flags, scred); 790} 791 792void 793smb_share_put(struct smb_share *ssp, struct smb_cred *scred) 794{ 795 smb_co_put(SSTOCP(ssp), scred); 796} 797 798int 799smb_share_lock(struct smb_share *ssp, int flags) 800{ 801 return smb_co_lock(SSTOCP(ssp), flags); 802} 803 804void 805smb_share_unlock(struct smb_share *ssp, int flags) 806{ 807 smb_co_unlock(SSTOCP(ssp), flags); 808} 809 810int 811smb_share_access(struct smb_share *ssp, struct smb_cred *scred, mode_t mode) 812{ 813 struct ucred *cred = scred->scr_cred; 814 815 if (smb_suser(cred) == 0 || cred->cr_uid == ssp->ss_uid) 816 return 0; 817 mode >>= 3; 818 if (!groupmember(ssp->ss_grp, cred)) 819 mode >>= 3; 820 return (ssp->ss_mode & mode) == mode ? 0 : EACCES; 821} 822 823void 824smb_share_invalidate(struct smb_share *ssp) 825{ 826 ssp->ss_tid = SMB_TID_UNKNOWN; 827} 828 829int 830smb_share_valid(struct smb_share *ssp) 831{ 832 return ssp->ss_tid != SMB_TID_UNKNOWN && 833 ssp->ss_vcgenid == SSTOVC(ssp)->vc_genid; 834} 835 836const char* 837smb_share_getpass(struct smb_share *ssp) 838{ 839 struct smb_vc *vcp; 840 841 if (ssp->ss_pass) 842 return ssp->ss_pass; 843 vcp = SSTOVC(ssp); 844 if (vcp->vc_pass) 845 return vcp->vc_pass; 846 return smb_emptypass; 847} 848 849static int 850smb_share_getinfo(struct smb_share *ssp, struct smb_share_info *sip) 851{ 852 bzero(sip, sizeof(struct smb_share_info)); 853 sip->itype = SMB_INFO_SHARE; 854 sip->usecount = ssp->obj.co_usecount; 855 sip->tid = ssp->ss_tid; 856 sip->type= ssp->ss_type; 857 sip->uid = ssp->ss_uid; 858 sip->gid = ssp->ss_grp; 859 sip->mode= ssp->ss_mode; 860 sip->flags = ssp->obj.co_flags; 861 snprintf(sip->sname, sizeof(sip->sname), "%s", ssp->ss_name); 862 return 0; 863} 864 865/* 866 * Dump an entire tree into sysctl call 867 */ 868static int 869smb_sysctl_treedump(SYSCTL_HANDLER_ARGS) 870{ 871 struct thread *td = req->td; 872 struct smb_cred scred; 873 struct smb_connobj *scp1, *scp2; 874 struct smb_vc *vcp; 875 struct smb_share *ssp; 876 struct smb_vc_info vci; 877 struct smb_share_info ssi; 878 int error, itype; 879 880 smb_makescred(&scred, td, td->td_ucred); 881 error = sysctl_wire_old_buffer(req, 0); 882 if (error) 883 return (error); 884 error = smb_sm_lockvclist(LK_SHARED); 885 if (error) 886 return error; 887 SMBCO_FOREACH(scp1, &smb_vclist) { 888 vcp = (struct smb_vc *)scp1; 889 error = smb_vc_lock(vcp, LK_SHARED); 890 if (error) 891 continue; 892 smb_vc_getinfo(vcp, &vci); 893 error = SYSCTL_OUT(req, &vci, sizeof(struct smb_vc_info)); 894 if (error) { 895 smb_vc_unlock(vcp, 0); 896 break; 897 } 898 SMBCO_FOREACH(scp2, VCTOCP(vcp)) { 899 ssp = (struct smb_share *)scp2; 900 error = smb_share_lock(ssp, LK_SHARED); 901 if (error) { 902 error = 0; 903 continue; 904 } 905 smb_share_getinfo(ssp, &ssi); 906 smb_share_unlock(ssp, 0); 907 error = SYSCTL_OUT(req, &ssi, sizeof(struct smb_share_info)); 908 if (error) 909 break; 910 } 911 smb_vc_unlock(vcp, 0); 912 if (error) 913 break; 914 } 915 if (!error) { 916 itype = SMB_INFO_NONE; 917 error = SYSCTL_OUT(req, &itype, sizeof(itype)); 918 } 919 smb_sm_unlockvclist(); 920 return error; 921} 922