1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #pragma ident "@(#)smb_tree.c 1.5 08/08/07 SMI" 27 28 /* 29 * General Structures Layout 30 * ------------------------- 31 * 32 * This is a simplified diagram showing the relationship between most of the 33 * main structures. 34 * 35 * +-------------------+ 36 * | SMB_INFO | 37 * +-------------------+ 38 * | 39 * | 40 * v 41 * +-------------------+ +-------------------+ +-------------------+ 42 * | SESSION |<----->| SESSION |......| SESSION | 43 * +-------------------+ +-------------------+ +-------------------+ 44 * | 45 * | 46 * v 47 * +-------------------+ +-------------------+ +-------------------+ 48 * | USER |<----->| USER |......| USER | 49 * +-------------------+ +-------------------+ +-------------------+ 50 * | 51 * | 52 * v 53 * +-------------------+ +-------------------+ +-------------------+ 54 * | TREE |<----->| TREE |......| TREE | 55 * +-------------------+ +-------------------+ +-------------------+ 56 * | | 57 * | | 58 * | v 59 * | +-------+ +-------+ +-------+ 60 * | | OFILE |<----->| OFILE |......| OFILE | 61 * | +-------+ +-------+ +-------+ 62 * | 63 * | 64 * v 65 * +-------+ +------+ +------+ 66 * | ODIR |<----->| ODIR |......| ODIR | 67 * +-------+ +------+ +------+ 68 * 69 * 70 * Tree State Machine 71 * ------------------ 72 * 73 * +-----------------------------+ T0 74 * | SMB_TREE_STATE_CONNECTED |<----------- Creation/Allocation 75 * +-----------------------------+ 76 * | 77 * | T1 78 * | 79 * v 80 * +------------------------------+ 81 * | SMB_TREE_STATE_DISCONNECTING | 82 * +------------------------------+ 83 * | 84 * | T2 85 * | 86 * v 87 * +-----------------------------+ T3 88 * | SMB_TREE_STATE_DISCONNECTED |----------> Deletion/Free 89 * +-----------------------------+ 90 * 91 * SMB_TREE_STATE_CONNECTED 92 * 93 * While in this state: 94 * - The tree is queued in the list of trees of its user. 95 * - References will be given out if the tree is looked up. 96 * - Files under that tree can be accessed. 97 * 98 * SMB_TREE_STATE_DISCONNECTING 99 * 100 * While in this state: 101 * - The tree is queued in the list of trees of its user. 102 * - References will not be given out if the tree is looked up. 103 * - The files and directories open under the tree are being closed. 104 * - The resources associated with the tree remain. 105 * 106 * SMB_TREE_STATE_DISCONNECTED 107 * 108 * While in this state: 109 * - The tree is queued in the list of trees of its user. 110 * - References will not be given out if the tree is looked up. 111 * - The tree has no more files and directories opened. 112 * - The resources associated with the tree remain. 113 * 114 * Transition T0 115 * 116 * This transition occurs in smb_tree_connect(). A new tree is created and 117 * added to the list of trees of a user. 118 * 119 * Transition T1 120 * 121 * This transition occurs in smb_tree_disconnect(). 122 * 123 * Transition T2 124 * 125 * This transition occurs in smb_tree_release(). The resources associated 126 * with the tree are freed as well as the tree structure. For the transition 127 * to occur, the tree must be in the SMB_TREE_STATE_DISCONNECTED state and 128 * the reference count be zero. 129 * 130 * Comments 131 * -------- 132 * 133 * The state machine of the tree structures is controlled by 3 elements: 134 * - The list of trees of the user it belongs to. 135 * - The mutex embedded in the structure itself. 136 * - The reference count. 137 * 138 * There's a mutex embedded in the tree structure used to protect its fields 139 * and there's a lock embedded in the list of trees of a user. To 140 * increment or to decrement the reference count the mutex must be entered. 141 * To insert the tree into the list of trees of the user and to remove 142 * the tree from it, the lock must be entered in RW_WRITER mode. 143 * 144 * Rules of access to a tree structure: 145 * 146 * 1) In order to avoid deadlocks, when both (mutex and lock of the user 147 * list) have to be entered, the lock must be entered first. 148 * 149 * 2) All actions applied to a tree require a reference count. 150 * 151 * 3) There are 2 ways of getting a reference count: when a tree is 152 * connected and when a tree is looked up. 153 * 154 * It should be noted that the reference count of a tree registers the 155 * number of references to the tree in other structures (such as an smb 156 * request). The reference count is not incremented in these 2 instances: 157 * 158 * 1) The tree is connected. An tree is anchored by his state. If there's 159 * no activity involving a tree currently connected, the reference 160 * count of that tree is zero. 161 * 162 * 2) The tree is queued in the list of trees of the user. The fact of 163 * being queued in that list is NOT registered by incrementing the 164 * reference count. 165 */ 166 #include <sys/types.h> 167 #include <sys/refstr_impl.h> 168 #include <sys/feature_tests.h> 169 #include <sys/sunddi.h> 170 #include <sys/fsid.h> 171 #include <sys/vfs.h> 172 #include <sys/stat.h> 173 #include <sys/varargs.h> 174 #include <smbsrv/smb_incl.h> 175 #include <smbsrv/lmerr.h> 176 #include <smbsrv/mlsvc.h> 177 #include <smbsrv/smb_fsops.h> 178 #include <smbsrv/smb_door_svc.h> 179 #include <smbsrv/smb_share.h> 180 181 int smb_tcon_mute = 0; 182 183 static smb_tree_t *smb_tree_connect_disk(smb_request_t *, const char *); 184 static smb_tree_t *smb_tree_connect_ipc(smb_request_t *, const char *); 185 static smb_tree_t *smb_tree_alloc(smb_user_t *, const char *, const char *, 186 int32_t, smb_node_t *); 187 static void smb_tree_dealloc(smb_tree_t *); 188 static boolean_t smb_tree_is_connected(smb_tree_t *); 189 static boolean_t smb_tree_is_disconnected(smb_tree_t *); 190 static const char *smb_tree_get_sharename(const char *); 191 static int smb_tree_get_stype(const char *, const char *, int32_t *); 192 static int smb_tree_getattr(smb_node_t *, smb_tree_t *); 193 static void smb_tree_get_volname(vfs_t *, smb_tree_t *); 194 static void smb_tree_get_flags(vfs_t *, smb_tree_t *); 195 static void smb_tree_log(smb_request_t *, const char *, const char *, ...); 196 197 /* 198 * Extract the share name and share type and connect as appropriate. 199 * Share names are case insensitive so we map the share name to 200 * lower-case as a convenience for internal processing. 201 */ 202 smb_tree_t * 203 smb_tree_connect(smb_request_t *sr) 204 { 205 char *unc_path = sr->arg.tcon.path; 206 char *service = sr->arg.tcon.service; 207 smb_tree_t *tree = NULL; 208 const char *name; 209 int32_t stype; 210 211 (void) utf8_strlwr(unc_path); 212 213 if ((name = smb_tree_get_sharename(unc_path)) == NULL) { 214 smbsr_error(sr, 0, ERRSRV, ERRinvnetname); 215 return (NULL); 216 } 217 218 if (smb_tree_get_stype(name, service, &stype) != 0) { 219 smbsr_error(sr, NT_STATUS_BAD_DEVICE_TYPE, 220 ERRDOS, ERROR_BAD_DEV_TYPE); 221 return (NULL); 222 } 223 224 switch (stype & STYPE_MASK) { 225 case STYPE_DISKTREE: 226 tree = smb_tree_connect_disk(sr, name); 227 break; 228 229 case STYPE_IPC: 230 tree = smb_tree_connect_ipc(sr, name); 231 break; 232 233 default: 234 smbsr_error(sr, NT_STATUS_BAD_DEVICE_TYPE, 235 ERRDOS, ERROR_BAD_DEV_TYPE); 236 break; 237 } 238 239 return (tree); 240 } 241 242 /* 243 * Disconnect a tree. 244 */ 245 void 246 smb_tree_disconnect( 247 smb_tree_t *tree) 248 { 249 ASSERT(tree->t_magic == SMB_TREE_MAGIC); 250 251 mutex_enter(&tree->t_mutex); 252 ASSERT(tree->t_refcnt); 253 254 if (smb_tree_is_connected(tree)) { 255 /* 256 * Indicate that the disconnect process has started. 257 */ 258 tree->t_state = SMB_TREE_STATE_DISCONNECTING; 259 mutex_exit(&tree->t_mutex); 260 atomic_dec_32(&tree->t_server->sv_open_trees); 261 262 /* 263 * The files opened under this tree are closed. 264 */ 265 smb_ofile_close_all(tree); 266 /* 267 * The directories opened under this tree are closed. 268 */ 269 smb_odir_close_all(tree); 270 mutex_enter(&tree->t_mutex); 271 tree->t_state = SMB_TREE_STATE_DISCONNECTED; 272 } 273 274 mutex_exit(&tree->t_mutex); 275 } 276 277 /* 278 * Take a reference on a tree. 279 */ 280 boolean_t 281 smb_tree_hold( 282 smb_tree_t *tree) 283 { 284 ASSERT(tree); 285 ASSERT(tree->t_magic == SMB_TREE_MAGIC); 286 287 mutex_enter(&tree->t_mutex); 288 289 if (smb_tree_is_connected(tree)) { 290 tree->t_refcnt++; 291 mutex_exit(&tree->t_mutex); 292 return (B_TRUE); 293 } 294 295 mutex_exit(&tree->t_mutex); 296 return (B_FALSE); 297 } 298 299 /* 300 * Release a reference on a tree. If the tree is disconnected and the 301 * reference count falls to zero, the tree will be deallocated. 302 */ 303 void 304 smb_tree_release( 305 smb_tree_t *tree) 306 { 307 ASSERT(tree); 308 ASSERT(tree->t_magic == SMB_TREE_MAGIC); 309 310 mutex_enter(&tree->t_mutex); 311 ASSERT(tree->t_refcnt); 312 tree->t_refcnt--; 313 314 if (smb_tree_is_disconnected(tree) && (tree->t_refcnt == 0)) { 315 mutex_exit(&tree->t_mutex); 316 smb_tree_dealloc(tree); 317 return; 318 } 319 320 mutex_exit(&tree->t_mutex); 321 } 322 323 /* 324 * Close ofiles and odirs that match pid. 325 */ 326 void 327 smb_tree_close_pid( 328 smb_tree_t *tree, 329 uint16_t pid) 330 { 331 ASSERT(tree); 332 ASSERT(tree->t_magic == SMB_TREE_MAGIC); 333 334 smb_ofile_close_all_by_pid(tree, pid); 335 smb_odir_close_all_by_pid(tree, pid); 336 } 337 338 /* 339 * Check whether or not a tree supports the features identified by flags. 340 */ 341 boolean_t 342 smb_tree_has_feature(smb_tree_t *tree, uint32_t flags) 343 { 344 ASSERT(tree); 345 ASSERT(tree->t_magic == SMB_TREE_MAGIC); 346 347 return ((tree->t_flags & flags) == flags); 348 } 349 350 /* *************************** Static Functions ***************************** */ 351 352 /* 353 * Connect a share for use with files and directories. 354 */ 355 static smb_tree_t * 356 smb_tree_connect_disk(smb_request_t *sr, const char *sharename) 357 { 358 smb_user_t *user = sr->uid_user; 359 smb_node_t *dir_snode = NULL; 360 smb_node_t *snode = NULL; 361 char last_component[MAXNAMELEN]; 362 smb_tree_t *tree; 363 smb_share_t si; 364 smb_attr_t attr; 365 cred_t *u_cred; 366 int rc; 367 368 ASSERT(user); 369 u_cred = user->u_cred; 370 ASSERT(u_cred); 371 372 bzero(&si, sizeof (smb_share_t)); 373 374 if (user->u_flags & SMB_USER_FLAG_IPC) { 375 smb_tree_log(sr, sharename, "access denied: IPC only"); 376 smbsr_error(sr, NT_STATUS_ACCESS_DENIED, ERRSRV, ERRaccess); 377 return (NULL); 378 } 379 380 if (smb_kshare_getinfo(sr->sr_server->sv_lmshrd, sharename, &si) != 381 NERR_Success) { 382 smb_tree_log(sr, sharename, "share not found"); 383 smbsr_error(sr, 0, ERRSRV, ERRinvnetname); 384 return (NULL); 385 } 386 387 /* 388 * Handle the default administration shares: C$, D$ etc. 389 * Only a user with admin rights is allowed to map these 390 * shares. 391 */ 392 if (si.shr_flags & SMB_SHRF_ADMIN) { 393 if (!smb_user_is_admin(user)) { 394 smb_tree_log(sr, sharename, "access denied: not admin"); 395 smbsr_error(sr, NT_STATUS_ACCESS_DENIED, 396 ERRSRV, ERRaccess); 397 return (NULL); 398 } 399 } 400 401 /* 402 * Check that the shared directory exists. 403 */ 404 rc = smb_pathname_reduce(sr, u_cred, si.shr_path, 0, 0, &dir_snode, 405 last_component); 406 407 if (rc == 0) { 408 rc = smb_fsop_lookup(sr, u_cred, SMB_FOLLOW_LINKS, 0, 409 dir_snode, last_component, &snode, &attr, 0, 0); 410 411 smb_node_release(dir_snode); 412 } 413 414 if (rc) { 415 if (snode) 416 smb_node_release(snode); 417 418 smb_tree_log(sr, sharename, "bad path: %s", si.shr_path); 419 smbsr_error(sr, 0, ERRSRV, ERRinvnetname); 420 return (NULL); 421 } 422 423 tree = smb_tree_alloc(user, sharename, si.shr_path, STYPE_DISKTREE, 424 snode); 425 if (tree == NULL) 426 smbsr_error(sr, NT_STATUS_ACCESS_DENIED, ERRSRV, ERRaccess); 427 428 smb_node_release(snode); 429 return (tree); 430 } 431 432 /* 433 * Connect an IPC share for use with named pipes. 434 */ 435 static smb_tree_t * 436 smb_tree_connect_ipc(smb_request_t *sr, const char *name) 437 { 438 smb_user_t *user = sr->uid_user; 439 smb_tree_t *tree; 440 441 ASSERT(user); 442 443 if ((user->u_flags & SMB_USER_FLAG_IPC) && 444 sr->sr_cfg->skc_restrict_anon) { 445 smb_tree_log(sr, name, "access denied: restrict anonymous"); 446 smbsr_error(sr, NT_STATUS_ACCESS_DENIED, ERRSRV, ERRaccess); 447 return (NULL); 448 } 449 450 tree = smb_tree_alloc(user, name, name, STYPE_IPC, NULL); 451 if (tree == NULL) { 452 smb_tree_log(sr, name, "access denied"); 453 smbsr_error(sr, NT_STATUS_ACCESS_DENIED, ERRSRV, ERRaccess); 454 } 455 456 return (tree); 457 } 458 459 /* 460 * Allocate a tree. 461 */ 462 static smb_tree_t * 463 smb_tree_alloc( 464 smb_user_t *user, 465 const char *sharename, 466 const char *resource, 467 int32_t stype, 468 smb_node_t *snode) 469 { 470 smb_tree_t *tree; 471 uint16_t tid; 472 473 if (smb_idpool_alloc(&user->u_tid_pool, &tid)) 474 return (NULL); 475 476 tree = kmem_cache_alloc(user->u_server->si_cache_tree, KM_SLEEP); 477 bzero(tree, sizeof (smb_tree_t)); 478 479 if (STYPE_ISDSK(stype)) { 480 if (smb_tree_getattr(snode, tree) != 0) { 481 smb_idpool_free(&user->u_tid_pool, tid); 482 kmem_cache_free(user->u_server->si_cache_tree, tree); 483 return (NULL); 484 } 485 } 486 487 if (smb_idpool_constructor(&tree->t_fid_pool)) { 488 smb_idpool_free(&user->u_tid_pool, tid); 489 kmem_cache_free(user->u_server->si_cache_tree, tree); 490 return (NULL); 491 } 492 493 if (smb_idpool_constructor(&tree->t_sid_pool)) { 494 smb_idpool_destructor(&tree->t_fid_pool); 495 smb_idpool_free(&user->u_tid_pool, tid); 496 kmem_cache_free(user->u_server->si_cache_tree, tree); 497 return (NULL); 498 } 499 500 smb_llist_constructor(&tree->t_ofile_list, sizeof (smb_ofile_t), 501 offsetof(smb_ofile_t, f_lnd)); 502 503 smb_llist_constructor(&tree->t_odir_list, sizeof (smb_odir_t), 504 offsetof(smb_odir_t, d_lnd)); 505 506 (void) strlcpy(tree->t_sharename, sharename, 507 sizeof (tree->t_sharename)); 508 (void) strlcpy(tree->t_resource, resource, sizeof (tree->t_resource)); 509 510 mutex_init(&tree->t_mutex, NULL, MUTEX_DEFAULT, NULL); 511 512 tree->t_user = user; 513 tree->t_session = user->u_session; 514 tree->t_server = user->u_server; 515 tree->t_refcnt = 1; 516 tree->t_tid = tid; 517 tree->t_res_type = stype; 518 tree->t_state = SMB_TREE_STATE_CONNECTED; 519 tree->t_magic = SMB_TREE_MAGIC; 520 521 if (STYPE_ISDSK(stype)) { 522 smb_node_ref(snode); 523 tree->t_snode = snode; 524 tree->t_acltype = smb_fsop_acltype(snode); 525 } 526 527 smb_llist_enter(&user->u_tree_list, RW_WRITER); 528 smb_llist_insert_head(&user->u_tree_list, tree); 529 smb_llist_exit(&user->u_tree_list); 530 atomic_inc_32(&user->u_session->s_tree_cnt); 531 atomic_inc_32(&user->u_server->sv_open_trees); 532 533 return (tree); 534 } 535 536 /* 537 * Deallocate a tree: release all resources associated with a tree and 538 * remove the tree from the user's tree list. 539 * 540 * The tree being destroyed must be in the "destroying" state and the 541 * reference count must be zero. This function assumes it's single threaded 542 * i.e. only one thread will attempt to destroy a specific tree, which 543 * should be the case if the tree is in disconnected and has a reference 544 * count of zero. 545 */ 546 static void 547 smb_tree_dealloc(smb_tree_t *tree) 548 { 549 ASSERT(tree); 550 ASSERT(tree->t_magic == SMB_TREE_MAGIC); 551 ASSERT(tree->t_state == SMB_TREE_STATE_DISCONNECTED); 552 ASSERT(tree->t_refcnt == 0); 553 554 /* 555 * Remove the tree from the user's tree list. This must be done 556 * before any resources associated with the tree are released. 557 */ 558 smb_llist_enter(&tree->t_user->u_tree_list, RW_WRITER); 559 smb_llist_remove(&tree->t_user->u_tree_list, tree); 560 smb_llist_exit(&tree->t_user->u_tree_list); 561 562 tree->t_magic = (uint32_t)~SMB_TREE_MAGIC; 563 smb_idpool_free(&tree->t_user->u_tid_pool, tree->t_tid); 564 atomic_dec_32(&tree->t_session->s_tree_cnt); 565 566 if (tree->t_snode) 567 smb_node_release(tree->t_snode); 568 569 mutex_destroy(&tree->t_mutex); 570 571 /* 572 * The list of open files and open directories should be empty. 573 */ 574 smb_llist_destructor(&tree->t_ofile_list); 575 smb_llist_destructor(&tree->t_odir_list); 576 smb_idpool_destructor(&tree->t_fid_pool); 577 smb_idpool_destructor(&tree->t_sid_pool); 578 kmem_cache_free(tree->t_server->si_cache_tree, tree); 579 } 580 581 /* 582 * Determine whether or not a tree is connected. 583 * This function must be called with the tree mutex held. 584 */ 585 static boolean_t 586 smb_tree_is_connected(smb_tree_t *tree) 587 { 588 switch (tree->t_state) { 589 case SMB_TREE_STATE_CONNECTED: 590 return (B_TRUE); 591 592 case SMB_TREE_STATE_DISCONNECTING: 593 case SMB_TREE_STATE_DISCONNECTED: 594 /* 595 * The tree exists but being diconnected or destroyed. 596 */ 597 return (B_FALSE); 598 599 default: 600 ASSERT(0); 601 return (B_FALSE); 602 } 603 } 604 605 /* 606 * Determine whether or not a tree is disconnected. 607 * This function must be called with the tree mutex held. 608 */ 609 static boolean_t 610 smb_tree_is_disconnected(smb_tree_t *tree) 611 { 612 switch (tree->t_state) { 613 case SMB_TREE_STATE_DISCONNECTED: 614 return (B_TRUE); 615 616 case SMB_TREE_STATE_CONNECTED: 617 case SMB_TREE_STATE_DISCONNECTING: 618 return (B_FALSE); 619 620 default: 621 ASSERT(0); 622 return (B_FALSE); 623 } 624 } 625 626 /* 627 * Return a pointer to the share name within a share resource path. 628 * 629 * The share path may be a Uniform Naming Convention (UNC) string 630 * (\\server\share) or simply the share name. We validate the UNC 631 * format but we don't look at the server name. 632 */ 633 static const char * 634 smb_tree_get_sharename(const char *unc_path) 635 { 636 const char *sharename = unc_path; 637 638 if (sharename[0] == '\\') { 639 /* 640 * Looks like a UNC path, validate the format. 641 */ 642 if (sharename[1] != '\\') 643 return (NULL); 644 645 if ((sharename = strchr(sharename+2, '\\')) == NULL) 646 return (NULL); 647 648 ++sharename; 649 } else if (strchr(sharename, '\\') != NULL) { 650 /* 651 * This should be a share name (no embedded \'s). 652 */ 653 return (NULL); 654 } 655 656 return (sharename); 657 } 658 659 /* 660 * Map the service to a resource type. Valid values for service are: 661 * 662 * A: Disk share 663 * LPT1: Printer 664 * IPC Named pipe 665 * COMM Communications device 666 * ????? Any type of device (wildcard) 667 * 668 * We support IPC and disk shares; anything else is currently treated 669 * as an error. IPC$ is reserved as the named pipe share. 670 */ 671 static int 672 smb_tree_get_stype(const char *sharename, const char *service, 673 int32_t *stype_ret) 674 { 675 const char *any = "?????"; 676 677 if ((strcmp(service, any) == 0) || (strcasecmp(service, "IPC") == 0)) { 678 if (strcasecmp(sharename, "IPC$") == 0) { 679 *stype_ret = STYPE_IPC; 680 return (0); 681 } 682 } 683 684 if ((strcmp(service, any) == 0) || (strcasecmp(service, "A:") == 0)) { 685 if (strcasecmp(sharename, "IPC$") == 0) 686 return (-1); 687 688 *stype_ret = STYPE_DISKTREE; 689 return (0); 690 } 691 692 return (-1); 693 } 694 695 /* 696 * Obtain the tree attributes: volume name, typename and flags. 697 */ 698 static int 699 smb_tree_getattr(smb_node_t *node, smb_tree_t *tree) 700 { 701 vfs_t *vfsp = SMB_NODE_VFS(node); 702 703 ASSERT(vfsp); 704 705 if (getvfs(&vfsp->vfs_fsid) != vfsp) 706 return (ESTALE); 707 708 smb_tree_get_volname(vfsp, tree); 709 smb_tree_get_flags(vfsp, tree); 710 711 VFS_RELE(vfsp); 712 return (0); 713 } 714 715 /* 716 * Extract the volume name. 717 */ 718 static void 719 smb_tree_get_volname(vfs_t *vfsp, smb_tree_t *tree) 720 { 721 refstr_t *vfs_mntpoint; 722 const char *s; 723 char *name; 724 725 vfs_mntpoint = vfs_getmntpoint(vfsp); 726 727 s = vfs_mntpoint->rs_string; 728 s += strspn(s, "/"); 729 (void) strlcpy(tree->t_volume, s, SMB_VOLNAMELEN); 730 731 refstr_rele(vfs_mntpoint); 732 733 name = tree->t_volume; 734 (void) strsep((char **)&name, "/"); 735 } 736 737 /* 738 * Always set ACL support because the VFS will fake ACLs for file systems 739 * that don't support them. 740 * 741 * Some flags are dependent on the typename, which is also set up here. 742 * File system types are hardcoded in uts/common/os/vfs_conf.c. 743 */ 744 static void 745 smb_tree_get_flags(vfs_t *vfsp, smb_tree_t *tree) 746 { 747 uint32_t flags = SMB_TREE_SUPPORTS_ACLS; 748 char *name; 749 750 if (vfsp->vfs_flag & VFS_RDONLY) 751 flags |= SMB_TREE_READONLY; 752 753 if (vfsp->vfs_flag & VFS_XATTR) 754 flags |= SMB_TREE_STREAMS; 755 756 if (vfs_optionisset(vfsp, MNTOPT_NOATIME, NULL)) 757 flags |= SMB_TREE_NO_ATIME; 758 759 name = vfssw[vfsp->vfs_fstype].vsw_name; 760 761 if (strcmp(name, "tmpfs") == 0) 762 flags |= SMB_TREE_NO_EXPORT; 763 764 if (strncasecmp(name, NFS, sizeof (NFS)) == 0) 765 flags |= SMB_TREE_NFS_MOUNTED; 766 767 (void) strlcpy(tree->t_typename, name, SMB_TYPENAMELEN); 768 (void) utf8_strupr((char *)tree->t_typename); 769 770 if (vfs_has_feature(vfsp, VFSFT_XVATTR)) 771 flags |= SMB_TREE_XVATTR; 772 773 if (vfs_has_feature(vfsp, VFSFT_CASEINSENSITIVE)) 774 flags |= SMB_TREE_CASEINSENSITIVE; 775 776 if (vfs_has_feature(vfsp, VFSFT_NOCASESENSITIVE)) 777 flags |= SMB_TREE_NO_CASESENSITIVE; 778 779 if (vfs_has_feature(vfsp, VFSFT_DIRENTFLAGS)) 780 flags |= SMB_TREE_DIRENTFLAGS; 781 782 if (vfs_has_feature(vfsp, VFSFT_ACLONCREATE)) 783 flags |= SMB_TREE_ACLONCREATE; 784 785 if (vfs_has_feature(vfsp, VFSFT_ACEMASKONACCESS)) 786 flags |= SMB_TREE_ACEMASKONACCESS; 787 788 DTRACE_PROBE1(smb__tree__flags, uint32_t, flags); 789 790 tree->t_flags = flags; 791 } 792 793 /* 794 * Report share access result to syslog. 795 */ 796 static void 797 smb_tree_log(smb_request_t *sr, const char *sharename, const char *fmt, ...) 798 { 799 va_list ap; 800 char buf[128]; 801 smb_user_t *user = sr->uid_user; 802 803 ASSERT(user); 804 805 if (smb_tcon_mute) 806 return; 807 808 if ((user->u_name) && (strcasecmp(sharename, "IPC$") == 0)) { 809 /* 810 * Only report normal users, i.e. ignore W2K misuse 811 * of the IPC connection by filtering out internal 812 * names such as nobody and root. 813 */ 814 if ((strcmp(user->u_name, "root") == 0) || 815 (strcmp(user->u_name, "nobody") == 0)) { 816 return; 817 } 818 } 819 820 va_start(ap, fmt); 821 (void) vsnprintf(buf, 128, fmt, ap); 822 va_end(ap); 823 824 cmn_err(CE_NOTE, "smbd[%s\\%s]: %s %s", 825 user->u_domain, user->u_name, sharename, buf); 826 } 827