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 (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved. 23 * Copyright (c) 2017 by Delphix. All rights reserved. 24 * Copyright 2019 Nexenta by DDN, Inc. All rights reserved. 25 * Copyright 2022 RackTop Systems, Inc. 26 */ 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_SERVER | 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 * Module Interface Overview 71 * ------------------------- 72 * 73 * 74 * +===================================+ 75 * | smbd daemon | 76 * +===================================+ 77 * | | ^ 78 * | | | 79 * User | | | 80 * -----------|--------------|----------------|-------------------------------- 81 * Kernel | | | 82 * | | | 83 * | | | 84 * +=========|==============|================|=================+ 85 * | v v | | 86 * | +-----------+ +--------------------+ +------------------+ | 87 * | | IO | | Kernel Door Server | | User Door Servers| | 88 * | | Interface | | Interface | | Interface | | 89 * | +-----------+ +--------------------+ +------------------+ | 90 * | | | ^ ^ | 91 * | v v | | | +=========+ 92 * | +-----------------------------------+ | | | | 93 * | + SMB Server Management (this file) |<------------------| ZFS | 94 * | +-----------------------------------+ | | | | 95 * | | | | Module | 96 * | +-----------------------------------+ | | | | 97 * | + SMB Server Internal Layers |------+ | +=========+ 98 * | +-----------------------------------+ | 99 * | | 100 * | | 101 * +===========================================================+ 102 * 103 * 104 * Server State Machine 105 * -------------------- 106 * | 107 * | T0 108 * | 109 * v 110 * +-----------------------------+ 111 * | SMB_SERVER_STATE_CREATED | 112 * +-----------------------------+ 113 * | 114 * | T1 115 * | 116 * v 117 * +-----------------------------+ 118 * | SMB_SERVER_STATE_CONFIGURED | 119 * +-----------------------------+ 120 * | 121 * | T2 122 * | 123 * v 124 * +-----------------------------+ 125 * | SMB_SERVER_STATE_RUNNING / | 126 * | SMB_SERVER_STATE_STOPPING | 127 * +-----------------------------+ 128 * | 129 * | T3 130 * | 131 * v 132 * +-----------------------------+ 133 * | SMB_SERVER_STATE_DELETING | 134 * +-----------------------------+ 135 * | 136 * | 137 * | 138 * v 139 * 140 * States 141 * ------ 142 * 143 * SMB_SERVER_STATE_CREATED 144 * 145 * This is the state of the server just after creation. 146 * 147 * SMB_SERVER_STATE_CONFIGURED 148 * 149 * The server has been configured. 150 * 151 * SMB_SERVER_STATE_RUNNING 152 * 153 * The server has been started. While in this state the threads listening on 154 * the sockets are started. 155 * 156 * When a client establishes a connection the thread listening dispatches 157 * a task with the new session as an argument. If the dispatch fails the new 158 * session context is destroyed. 159 * 160 * SMB_SERVER_STATE_STOPPING 161 * 162 * The threads listening on the NBT and TCP sockets are being terminated. 163 * 164 * 165 * Transitions 166 * ----------- 167 * 168 * Transition T0 169 * 170 * The daemon smbd triggers its creation by opening the smbsrv device. If 171 * the zone where the daemon lives doesn't have an smb server yet it is 172 * created. 173 * 174 * smb_drv_open() --> smb_server_create() 175 * 176 * Transition T1 177 * 178 * This transition occurs in smb_server_configure(). It is triggered by the 179 * daemon through an Ioctl. 180 * 181 * smb_drv_ioctl(SMB_IOC_CONFIG) --> smb_server_configure() 182 * 183 * Transition T2 184 * 185 * This transition occurs in smb_server_start(). It is triggered by the 186 * daemon through an Ioctl. 187 * 188 * smb_drv_ioctl(SMB_IOC_START) --> smb_server_start() 189 * 190 * Transition T3 191 * 192 * This transition occurs in smb_server_delete(). It is triggered by the 193 * daemon when closing the smbsrv device 194 * 195 * smb_drv_close() --> smb_server_delete() 196 * 197 * Comments 198 * -------- 199 * 200 * This files assumes that there will one SMB server per zone. For now the 201 * smb server works only in global zone. There's nothing in this file preventing 202 * an smb server from being created in a non global zone. That limitation is 203 * enforced in user space. 204 */ 205 206 #include <sys/cmn_err.h> 207 #include <sys/priv.h> 208 #include <sys/zone.h> 209 #include <netinet/in.h> 210 #include <netinet/in_systm.h> 211 #include <netinet/ip.h> 212 #include <netinet/ip_icmp.h> 213 #include <netinet/ip_var.h> 214 #include <netinet/tcp.h> 215 #include <smbsrv/smb2_kproto.h> 216 #include <smbsrv/string.h> 217 #include <smbsrv/netbios.h> 218 #include <smbsrv/smb_fsops.h> 219 #include <smbsrv/smb_share.h> 220 #include <smbsrv/smb_door.h> 221 #include <smbsrv/smb_kstat.h> 222 223 static void smb_server_kstat_init(smb_server_t *); 224 static void smb_server_kstat_fini(smb_server_t *); 225 static void smb_server_timers(smb_thread_t *, void *); 226 static void smb_server_store_cfg(smb_server_t *, smb_ioc_cfg_t *); 227 static void smb_server_shutdown(smb_server_t *); 228 static int smb_server_fsop_start(smb_server_t *); 229 static void smb_server_fsop_stop(smb_server_t *); 230 static void smb_event_cancel(smb_server_t *, uint32_t); 231 static uint32_t smb_event_alloc_txid(void); 232 233 static void smb_server_disconnect_share(smb_server_t *, const char *); 234 static void smb_server_enum_users(smb_server_t *, smb_svcenum_t *); 235 static void smb_server_enum_trees(smb_server_t *, smb_svcenum_t *); 236 static int smb_server_session_disconnect(smb_server_t *, const char *, 237 const char *); 238 static int smb_server_fclose(smb_server_t *, uint32_t); 239 static int smb_server_kstat_update(kstat_t *, int); 240 static int smb_server_legacy_kstat_update(kstat_t *, int); 241 static void smb_server_listener_init(smb_server_t *, smb_listener_daemon_t *, 242 char *, in_port_t, int); 243 static void smb_server_listener_destroy(smb_listener_daemon_t *); 244 static int smb_server_listener_start(smb_listener_daemon_t *); 245 static void smb_server_listener_stop(smb_listener_daemon_t *); 246 static void smb_server_listener(smb_thread_t *, void *); 247 static void smb_server_receiver(void *); 248 static void smb_server_create_session(smb_listener_daemon_t *, ksocket_t); 249 static void smb_server_destroy_session(smb_session_t *); 250 static uint16_t smb_spool_get_fid(smb_server_t *); 251 static boolean_t smb_spool_lookup_doc_byfid(smb_server_t *, uint16_t, 252 smb_kspooldoc_t *); 253 254 /* 255 * How many "buckets" should our hash tables use? On a "real" server, 256 * make them much larger than the number of CPUs we're likely to have. 257 * On "fksmbd" make it smaller so dtrace logs are shorter. 258 * These must be powers of two. 259 */ 260 #ifdef _KERNEL 261 #define DEFAULT_HASH_NBUCKETS 256 /* real server */ 262 #else 263 #define DEFAULT_HASH_NBUCKETS 16 /* for "fksmbd" */ 264 #endif 265 uint32_t SMB_OFILE_HASH_NBUCKETS = DEFAULT_HASH_NBUCKETS; 266 uint32_t SMB_LEASE_HASH_NBUCKETS = DEFAULT_HASH_NBUCKETS; 267 268 int smb_event_debug = 0; 269 270 static smb_llist_t smb_servers; 271 272 kmem_cache_t *smb_cache_request; 273 kmem_cache_t *smb_cache_session; 274 kmem_cache_t *smb_cache_user; 275 kmem_cache_t *smb_cache_tree; 276 kmem_cache_t *smb_cache_ofile; 277 kmem_cache_t *smb_cache_odir; 278 kmem_cache_t *smb_cache_opipe; 279 kmem_cache_t *smb_cache_event; 280 kmem_cache_t *smb_cache_lock; 281 282 /* 283 * ***************************************************************************** 284 * **************** Functions called from the device interface ***************** 285 * ***************************************************************************** 286 * 287 * These functions typically have to determine the relevant smb server 288 * to which the call applies. 289 */ 290 291 /* 292 * How many zones have an SMB server active? 293 */ 294 int 295 smb_server_get_count(void) 296 { 297 return (smb_llist_get_count(&smb_servers)); 298 } 299 300 /* 301 * smb_server_g_init 302 * 303 * This function must be called from smb_drv_attach(). 304 */ 305 int 306 smb_server_g_init(void) 307 { 308 int rc; 309 310 if ((rc = smb_vop_init()) != 0) 311 goto errout; 312 if ((rc = smb_fem_init()) != 0) 313 goto errout; 314 315 smb_kshare_g_init(); 316 smb_codepage_init(); 317 smb_mbc_init(); /* smb_mbc_cache */ 318 smb_node_init(); /* smb_node_cache, lists */ 319 smb2_lease_init(); 320 321 smb_cache_request = kmem_cache_create("smb_request_cache", 322 sizeof (smb_request_t), 8, NULL, NULL, NULL, NULL, NULL, 0); 323 smb_cache_session = kmem_cache_create("smb_session_cache", 324 sizeof (smb_session_t), 8, NULL, NULL, NULL, NULL, NULL, 0); 325 smb_cache_user = kmem_cache_create("smb_user_cache", 326 sizeof (smb_user_t), 8, NULL, NULL, NULL, NULL, NULL, 0); 327 smb_cache_tree = kmem_cache_create("smb_tree_cache", 328 sizeof (smb_tree_t), 8, NULL, NULL, NULL, NULL, NULL, 0); 329 smb_cache_ofile = kmem_cache_create("smb_ofile_cache", 330 sizeof (smb_ofile_t), 8, NULL, NULL, NULL, NULL, NULL, 0); 331 smb_cache_odir = kmem_cache_create("smb_odir_cache", 332 sizeof (smb_odir_t), 8, NULL, NULL, NULL, NULL, NULL, 0); 333 smb_cache_opipe = kmem_cache_create("smb_opipe_cache", 334 sizeof (smb_opipe_t), 8, NULL, NULL, NULL, NULL, NULL, 0); 335 smb_cache_event = kmem_cache_create("smb_event_cache", 336 sizeof (smb_event_t), 8, NULL, NULL, NULL, NULL, NULL, 0); 337 smb_cache_lock = kmem_cache_create("smb_lock_cache", 338 sizeof (smb_lock_t), 8, NULL, NULL, NULL, NULL, NULL, 0); 339 340 smb_llist_init(); 341 smb_llist_constructor(&smb_servers, sizeof (smb_server_t), 342 offsetof(smb_server_t, sv_lnd)); 343 344 return (0); 345 346 errout: 347 smb_fem_fini(); 348 smb_vop_fini(); 349 return (rc); 350 } 351 352 /* 353 * smb_server_g_fini 354 * 355 * This function must called from smb_drv_detach(). It will fail if servers 356 * still exist. 357 */ 358 void 359 smb_server_g_fini(void) 360 { 361 362 ASSERT(smb_llist_get_count(&smb_servers) == 0); 363 364 smb_llist_fini(); 365 366 kmem_cache_destroy(smb_cache_request); 367 kmem_cache_destroy(smb_cache_session); 368 kmem_cache_destroy(smb_cache_user); 369 kmem_cache_destroy(smb_cache_tree); 370 kmem_cache_destroy(smb_cache_ofile); 371 kmem_cache_destroy(smb_cache_odir); 372 kmem_cache_destroy(smb_cache_opipe); 373 kmem_cache_destroy(smb_cache_event); 374 kmem_cache_destroy(smb_cache_lock); 375 376 smb2_lease_fini(); 377 smb_node_fini(); 378 smb_mbc_fini(); 379 smb_codepage_fini(); 380 smb_kshare_g_fini(); 381 382 smb_fem_fini(); 383 smb_vop_fini(); 384 385 smb_llist_destructor(&smb_servers); 386 } 387 388 /* 389 * smb_server_create 390 * 391 * This function will fail if there's already a server associated with the 392 * caller's zone. 393 */ 394 int 395 smb_server_create(void) 396 { 397 zoneid_t zid; 398 smb_server_t *sv; 399 400 zid = getzoneid(); 401 402 smb_llist_enter(&smb_servers, RW_WRITER); 403 sv = smb_llist_head(&smb_servers); 404 while (sv) { 405 SMB_SERVER_VALID(sv); 406 if (sv->sv_zid == zid) { 407 smb_llist_exit(&smb_servers); 408 return (EPERM); 409 } 410 sv = smb_llist_next(&smb_servers, sv); 411 } 412 413 sv = kmem_zalloc(sizeof (smb_server_t), KM_SLEEP); 414 415 sv->sv_magic = SMB_SERVER_MAGIC; 416 sv->sv_state = SMB_SERVER_STATE_CREATED; 417 sv->sv_zid = zid; 418 sv->sv_pid = ddi_get_pid(); 419 420 mutex_init(&sv->sv_mutex, NULL, MUTEX_DEFAULT, NULL); 421 cv_init(&sv->sv_cv, NULL, CV_DEFAULT, NULL); 422 cv_init(&sv->sp_info.sp_cv, NULL, CV_DEFAULT, NULL); 423 424 sv->sv_persistid_ht = smb_hash_create(sizeof (smb_ofile_t), 425 offsetof(smb_ofile_t, f_dh_lnd), SMB_OFILE_HASH_NBUCKETS); 426 427 sv->sv_lease_ht = smb_hash_create(sizeof (smb_lease_t), 428 offsetof(smb_lease_t, ls_lnd), SMB_LEASE_HASH_NBUCKETS); 429 430 smb_llist_constructor(&sv->sv_session_list, sizeof (smb_session_t), 431 offsetof(smb_session_t, s_lnd)); 432 433 smb_llist_constructor(&sv->sv_event_list, sizeof (smb_event_t), 434 offsetof(smb_event_t, se_lnd)); 435 436 smb_llist_constructor(&sv->sp_info.sp_list, sizeof (smb_kspooldoc_t), 437 offsetof(smb_kspooldoc_t, sd_lnd)); 438 439 smb_llist_constructor(&sv->sp_info.sp_fidlist, 440 sizeof (smb_spoolfid_t), offsetof(smb_spoolfid_t, sf_lnd)); 441 442 sv->sv_disp_stats1 = kmem_zalloc(SMB_COM_NUM * 443 sizeof (smb_disp_stats_t), KM_SLEEP); 444 445 sv->sv_disp_stats2 = kmem_zalloc(SMB2__NCMDS * 446 sizeof (smb_disp_stats_t), KM_SLEEP); 447 448 smb_thread_init(&sv->si_thread_timers, "smb_timers", 449 smb_server_timers, sv, smbsrv_timer_pri); 450 451 smb_srqueue_init(&sv->sv_srqueue); 452 453 smb_kdoor_init(sv); 454 smb_kshare_init(sv); 455 smb_server_kstat_init(sv); 456 457 smb_threshold_init(&sv->sv_ssetup_ct, SMB_SSETUP_CMD, 458 smb_ssetup_threshold, smb_ssetup_timeout); 459 smb_threshold_init(&sv->sv_tcon_ct, SMB_TCON_CMD, 460 smb_tcon_threshold, smb_tcon_timeout); 461 smb_threshold_init(&sv->sv_opipe_ct, SMB_OPIPE_CMD, 462 smb_opipe_threshold, smb_opipe_timeout); 463 464 smb_llist_insert_tail(&smb_servers, sv); 465 smb_llist_exit(&smb_servers); 466 467 return (0); 468 } 469 470 /* 471 * smb_server_delete 472 * 473 * This function will delete the server passed in. It will make sure that all 474 * activity associated that server has ceased before destroying it. 475 */ 476 int 477 smb_server_delete(smb_server_t *sv) 478 { 479 480 mutex_enter(&sv->sv_mutex); 481 switch (sv->sv_state) { 482 case SMB_SERVER_STATE_RUNNING: 483 sv->sv_state = SMB_SERVER_STATE_STOPPING; 484 mutex_exit(&sv->sv_mutex); 485 smb_server_shutdown(sv); 486 mutex_enter(&sv->sv_mutex); 487 cv_broadcast(&sv->sp_info.sp_cv); 488 sv->sv_state = SMB_SERVER_STATE_DELETING; 489 break; 490 case SMB_SERVER_STATE_STOPPING: 491 sv->sv_state = SMB_SERVER_STATE_DELETING; 492 break; 493 case SMB_SERVER_STATE_CONFIGURED: 494 case SMB_SERVER_STATE_CREATED: 495 sv->sv_state = SMB_SERVER_STATE_DELETING; 496 break; 497 default: 498 SMB_SERVER_STATE_VALID(sv->sv_state); 499 mutex_exit(&sv->sv_mutex); 500 smb_server_release(sv); 501 return (ENOTTY); 502 } 503 504 ASSERT(sv->sv_state == SMB_SERVER_STATE_DELETING); 505 506 sv->sv_refcnt--; 507 while (sv->sv_refcnt) 508 cv_wait(&sv->sv_cv, &sv->sv_mutex); 509 510 mutex_exit(&sv->sv_mutex); 511 512 smb_llist_enter(&smb_servers, RW_WRITER); 513 smb_llist_remove(&smb_servers, sv); 514 smb_llist_exit(&smb_servers); 515 516 smb_threshold_fini(&sv->sv_ssetup_ct); 517 smb_threshold_fini(&sv->sv_tcon_ct); 518 smb_threshold_fini(&sv->sv_opipe_ct); 519 520 smb_server_listener_destroy(&sv->sv_nbt_daemon); 521 smb_server_listener_destroy(&sv->sv_tcp_daemon); 522 rw_destroy(&sv->sv_cfg_lock); 523 smb_server_kstat_fini(sv); 524 smb_kshare_fini(sv); 525 smb_kdoor_fini(sv); 526 smb_llist_destructor(&sv->sv_event_list); 527 smb_llist_destructor(&sv->sv_session_list); 528 529 kmem_free(sv->sv_disp_stats1, 530 SMB_COM_NUM * sizeof (smb_disp_stats_t)); 531 532 kmem_free(sv->sv_disp_stats2, 533 SMB2__NCMDS * sizeof (smb_disp_stats_t)); 534 535 smb_srqueue_destroy(&sv->sv_srqueue); 536 smb_thread_destroy(&sv->si_thread_timers); 537 538 mutex_destroy(&sv->sv_mutex); 539 smb_hash_destroy(sv->sv_lease_ht); 540 smb_hash_destroy(sv->sv_persistid_ht); 541 cv_destroy(&sv->sv_cv); 542 sv->sv_magic = 0; 543 kmem_free(sv, sizeof (smb_server_t)); 544 545 return (0); 546 } 547 548 /* 549 * smb_server_configure 550 */ 551 int 552 smb_server_configure(smb_ioc_cfg_t *ioc) 553 { 554 int rc = 0; 555 smb_server_t *sv; 556 557 /* 558 * Reality check negotiation token length vs. #define'd maximum. 559 */ 560 if (ioc->negtok_len > SMB_PI_MAX_NEGTOK) 561 return (EINVAL); 562 563 rc = smb_server_lookup(&sv); 564 if (rc) 565 return (rc); 566 567 mutex_enter(&sv->sv_mutex); 568 switch (sv->sv_state) { 569 case SMB_SERVER_STATE_CREATED: 570 smb_server_store_cfg(sv, ioc); 571 sv->sv_state = SMB_SERVER_STATE_CONFIGURED; 572 break; 573 574 case SMB_SERVER_STATE_CONFIGURED: 575 smb_server_store_cfg(sv, ioc); 576 break; 577 578 case SMB_SERVER_STATE_RUNNING: 579 case SMB_SERVER_STATE_STOPPING: 580 rw_enter(&sv->sv_cfg_lock, RW_WRITER); 581 smb_server_store_cfg(sv, ioc); 582 rw_exit(&sv->sv_cfg_lock); 583 break; 584 585 default: 586 SMB_SERVER_STATE_VALID(sv->sv_state); 587 rc = EFAULT; 588 break; 589 } 590 mutex_exit(&sv->sv_mutex); 591 592 smb_server_release(sv); 593 594 return (rc); 595 } 596 597 /* 598 * smb_server_start 599 */ 600 int 601 smb_server_start(smb_ioc_start_t *ioc) 602 { 603 int rc = 0; 604 int family; 605 smb_server_t *sv; 606 cred_t *ucr; 607 608 rc = smb_server_lookup(&sv); 609 if (rc) 610 return (rc); 611 612 mutex_enter(&sv->sv_mutex); 613 switch (sv->sv_state) { 614 case SMB_SERVER_STATE_CONFIGURED: 615 616 if ((rc = smb_server_fsop_start(sv)) != 0) 617 break; 618 619 /* 620 * Note: smb_kshare_start needs sv_session. 621 */ 622 sv->sv_session = smb_session_create(NULL, 0, sv, 0); 623 if (sv->sv_session == NULL) { 624 rc = ENOMEM; 625 break; 626 } 627 628 /* 629 * Create a logon on the server session, 630 * used when importing CA shares. 631 */ 632 sv->sv_rootuser = smb_user_new(sv->sv_session); 633 ucr = smb_kcred_create(); 634 rc = smb_user_logon(sv->sv_rootuser, ucr, "", "root", 635 SMB_USER_FLAG_ADMIN, 0, 0); 636 crfree(ucr); 637 ucr = NULL; 638 if (rc != 0) { 639 cmn_err(CE_NOTE, "smb_server_start: " 640 "failed to create root user"); 641 break; 642 } 643 644 if ((rc = smb_kshare_start(sv)) != 0) 645 break; 646 647 /* 648 * NB: the proc passed here has to be a "system" one. 649 * Normally that's p0, or the NGZ eqivalent. 650 */ 651 sv->sv_worker_pool = taskq_create_proc("smb_workers", 652 sv->sv_cfg.skc_maxworkers, smbsrv_worker_pri, 653 sv->sv_cfg.skc_maxworkers, INT_MAX, 654 curzone->zone_zsched, TASKQ_DYNAMIC); 655 656 sv->sv_receiver_pool = taskq_create_proc("smb_receivers", 657 sv->sv_cfg.skc_maxconnections, smbsrv_receive_pri, 658 sv->sv_cfg.skc_maxconnections, INT_MAX, 659 curzone->zone_zsched, TASKQ_DYNAMIC); 660 661 if (sv->sv_worker_pool == NULL || 662 sv->sv_receiver_pool == NULL) { 663 rc = ENOMEM; 664 break; 665 } 666 667 #ifdef _KERNEL 668 ASSERT(sv->sv_lmshrd == NULL); 669 sv->sv_lmshrd = smb_kshare_door_init(ioc->lmshrd); 670 if (sv->sv_lmshrd == NULL) 671 break; 672 if ((rc = smb_kdoor_open(sv, ioc->udoor)) != 0) { 673 cmn_err(CE_WARN, "Cannot open smbd door"); 674 break; 675 } 676 #else /* _KERNEL */ 677 /* Fake kernel does not use the kshare_door */ 678 fksmb_kdoor_open(sv, ioc->udoor_func); 679 #endif /* _KERNEL */ 680 681 if ((rc = smb_thread_start(&sv->si_thread_timers)) != 0) 682 break; 683 684 family = AF_INET; 685 smb_server_listener_init(sv, &sv->sv_nbt_daemon, 686 "smb_nbt_listener", IPPORT_NETBIOS_SSN, family); 687 if (sv->sv_cfg.skc_ipv6_enable) 688 family = AF_INET6; 689 smb_server_listener_init(sv, &sv->sv_tcp_daemon, 690 "smb_tcp_listener", IPPORT_SMB, family); 691 rc = smb_server_listener_start(&sv->sv_tcp_daemon); 692 if (rc != 0) 693 break; 694 if (sv->sv_cfg.skc_netbios_enable) 695 (void) smb_server_listener_start(&sv->sv_nbt_daemon); 696 697 sv->sv_state = SMB_SERVER_STATE_RUNNING; 698 sv->sv_start_time = gethrtime(); 699 mutex_exit(&sv->sv_mutex); 700 smb_server_release(sv); 701 smb_export_start(sv); 702 return (0); 703 default: 704 SMB_SERVER_STATE_VALID(sv->sv_state); 705 mutex_exit(&sv->sv_mutex); 706 smb_server_release(sv); 707 return (ENOTTY); 708 } 709 710 mutex_exit(&sv->sv_mutex); 711 smb_server_shutdown(sv); 712 smb_server_release(sv); 713 return (rc); 714 } 715 716 /* 717 * An smbd is shutting down. 718 */ 719 int 720 smb_server_stop(void) 721 { 722 smb_server_t *sv; 723 int rc; 724 725 if ((rc = smb_server_lookup(&sv)) != 0) 726 return (rc); 727 728 mutex_enter(&sv->sv_mutex); 729 switch (sv->sv_state) { 730 case SMB_SERVER_STATE_RUNNING: 731 sv->sv_state = SMB_SERVER_STATE_STOPPING; 732 mutex_exit(&sv->sv_mutex); 733 smb_server_shutdown(sv); 734 mutex_enter(&sv->sv_mutex); 735 cv_broadcast(&sv->sp_info.sp_cv); 736 break; 737 default: 738 SMB_SERVER_STATE_VALID(sv->sv_state); 739 break; 740 } 741 mutex_exit(&sv->sv_mutex); 742 743 smb_server_release(sv); 744 return (0); 745 } 746 747 boolean_t 748 smb_server_is_stopping(smb_server_t *sv) 749 { 750 boolean_t status; 751 752 SMB_SERVER_VALID(sv); 753 754 mutex_enter(&sv->sv_mutex); 755 756 switch (sv->sv_state) { 757 case SMB_SERVER_STATE_STOPPING: 758 case SMB_SERVER_STATE_DELETING: 759 status = B_TRUE; 760 break; 761 default: 762 status = B_FALSE; 763 break; 764 } 765 766 mutex_exit(&sv->sv_mutex); 767 return (status); 768 } 769 770 void 771 smb_server_cancel_event(smb_server_t *sv, uint32_t txid) 772 { 773 smb_event_cancel(sv, txid); 774 } 775 776 int 777 smb_server_notify_event(smb_ioc_event_t *ioc) 778 { 779 smb_server_t *sv; 780 int rc; 781 782 if ((rc = smb_server_lookup(&sv)) == 0) { 783 smb_event_notify(sv, ioc->txid); 784 smb_server_release(sv); 785 } 786 787 return (rc); 788 } 789 790 /* 791 * smb_server_spooldoc 792 * 793 * Waits for print file close broadcast. 794 * Gets the head of the fid list, 795 * then searches the spooldoc list and returns 796 * this info via the ioctl to user land. 797 * 798 * rc - 0 success 799 */ 800 801 int 802 smb_server_spooldoc(smb_ioc_spooldoc_t *ioc) 803 { 804 smb_server_t *sv; 805 int rc; 806 smb_kspooldoc_t *spdoc; 807 uint16_t fid; 808 809 if ((rc = smb_server_lookup(&sv)) != 0) 810 return (rc); 811 812 if (sv->sv_cfg.skc_print_enable == 0) { 813 rc = ENOTTY; 814 goto out; 815 } 816 817 mutex_enter(&sv->sv_mutex); 818 for (;;) { 819 if (sv->sv_state != SMB_SERVER_STATE_RUNNING) { 820 rc = ECANCELED; 821 break; 822 } 823 if ((fid = smb_spool_get_fid(sv)) != 0) { 824 rc = 0; 825 break; 826 } 827 if (cv_wait_sig(&sv->sp_info.sp_cv, &sv->sv_mutex) == 0) { 828 rc = EINTR; 829 break; 830 } 831 } 832 mutex_exit(&sv->sv_mutex); 833 if (rc != 0) 834 goto out; 835 836 spdoc = kmem_zalloc(sizeof (*spdoc), KM_SLEEP); 837 if (smb_spool_lookup_doc_byfid(sv, fid, spdoc)) { 838 ioc->spool_num = spdoc->sd_spool_num; 839 ioc->ipaddr = spdoc->sd_ipaddr; 840 (void) strlcpy(ioc->path, spdoc->sd_path, 841 MAXPATHLEN); 842 (void) strlcpy(ioc->username, 843 spdoc->sd_username, MAXNAMELEN); 844 } else { 845 /* Did not find that print job. */ 846 rc = EAGAIN; 847 } 848 kmem_free(spdoc, sizeof (*spdoc)); 849 850 out: 851 smb_server_release(sv); 852 return (rc); 853 } 854 855 int 856 smb_server_set_gmtoff(smb_ioc_gmt_t *ioc) 857 { 858 int rc; 859 smb_server_t *sv; 860 861 if ((rc = smb_server_lookup(&sv)) == 0) { 862 sv->si_gmtoff = ioc->offset; 863 smb_server_release(sv); 864 } 865 866 return (rc); 867 } 868 869 int 870 smb_server_numopen(smb_ioc_opennum_t *ioc) 871 { 872 smb_server_t *sv; 873 int rc; 874 875 if ((rc = smb_server_lookup(&sv)) == 0) { 876 ioc->open_users = sv->sv_users; 877 ioc->open_trees = sv->sv_trees; 878 ioc->open_files = sv->sv_files + sv->sv_pipes; 879 smb_server_release(sv); 880 } 881 return (rc); 882 } 883 884 /* 885 * Enumerate objects within the server. The svcenum provides the 886 * enumeration context, i.e. what the caller want to get back. 887 */ 888 int 889 smb_server_enum(smb_ioc_svcenum_t *ioc) 890 { 891 smb_svcenum_t *svcenum = &ioc->svcenum; 892 smb_server_t *sv; 893 int rc; 894 895 /* 896 * Reality check that the buffer-length insize the enum doesn't 897 * overrun the ioctl's total length. 898 */ 899 if (svcenum->se_buflen + sizeof (*ioc) > ioc->hdr.len) 900 return (EINVAL); 901 902 if ((rc = smb_server_lookup(&sv)) != 0) 903 return (rc); 904 905 svcenum->se_bavail = svcenum->se_buflen; 906 svcenum->se_bused = 0; 907 svcenum->se_nitems = 0; 908 909 switch (svcenum->se_type) { 910 case SMB_SVCENUM_TYPE_USER: 911 smb_server_enum_users(sv, svcenum); 912 break; 913 case SMB_SVCENUM_TYPE_TREE: 914 case SMB_SVCENUM_TYPE_FILE: 915 smb_server_enum_trees(sv, svcenum); 916 break; 917 default: 918 rc = EINVAL; 919 } 920 921 smb_server_release(sv); 922 return (rc); 923 } 924 925 /* 926 * Look for sessions to disconnect by client and user name. 927 */ 928 int 929 smb_server_session_close(smb_ioc_session_t *ioc) 930 { 931 smb_server_t *sv; 932 int cnt; 933 int rc; 934 935 if ((rc = smb_server_lookup(&sv)) != 0) 936 return (rc); 937 938 cnt = smb_server_session_disconnect(sv, ioc->client, ioc->username); 939 940 smb_server_release(sv); 941 942 if (cnt == 0) 943 return (ENOENT); 944 return (0); 945 } 946 947 /* 948 * Close a file by uniqid. 949 */ 950 int 951 smb_server_file_close(smb_ioc_fileid_t *ioc) 952 { 953 uint32_t uniqid = ioc->uniqid; 954 smb_server_t *sv; 955 int rc; 956 957 if ((rc = smb_server_lookup(&sv)) != 0) 958 return (rc); 959 960 rc = smb_server_fclose(sv, uniqid); 961 962 smb_server_release(sv); 963 return (rc); 964 } 965 966 /* 967 * These functions determine the relevant smb server to which the call apply. 968 */ 969 970 uint32_t 971 smb_server_get_session_count(smb_server_t *sv) 972 { 973 uint32_t counter = 0; 974 975 counter = smb_llist_get_count(&sv->sv_session_list); 976 977 return (counter); 978 } 979 980 /* 981 * Gets the smb_node of the specified share path. 982 * Node is returned held (caller must rele.) 983 */ 984 int 985 smb_server_share_lookup(smb_server_t *sv, const char *shr_path, 986 smb_node_t **nodepp) 987 { 988 smb_request_t *sr; 989 smb_node_t *fnode = NULL; 990 smb_node_t *dnode = NULL; 991 char last_comp[MAXNAMELEN]; 992 int rc = 0; 993 994 ASSERT(shr_path); 995 996 mutex_enter(&sv->sv_mutex); 997 switch (sv->sv_state) { 998 case SMB_SERVER_STATE_RUNNING: 999 break; 1000 default: 1001 mutex_exit(&sv->sv_mutex); 1002 return (ENOTACTIVE); 1003 } 1004 mutex_exit(&sv->sv_mutex); 1005 1006 if ((sr = smb_request_alloc(sv->sv_session, 0)) == NULL) { 1007 return (ENOTCONN); 1008 } 1009 sr->user_cr = zone_kcred(); 1010 1011 rc = smb_pathname_reduce(sr, sr->user_cr, shr_path, 1012 NULL, NULL, &dnode, last_comp); 1013 1014 if (rc == 0) { 1015 rc = smb_fsop_lookup(sr, sr->user_cr, SMB_FOLLOW_LINKS, 1016 sv->si_root_smb_node, dnode, last_comp, &fnode); 1017 smb_node_release(dnode); 1018 } 1019 1020 smb_request_free(sr); 1021 1022 if (rc != 0) 1023 return (rc); 1024 1025 ASSERT(fnode->vp && fnode->vp->v_vfsp); 1026 1027 *nodepp = fnode; 1028 1029 return (0); 1030 } 1031 1032 #ifdef _KERNEL 1033 /* 1034 * This is a special interface that will be utilized by ZFS to cause a share to 1035 * be added/removed. 1036 * 1037 * arg is either a lmshare_info_t or share_name from userspace. 1038 * It will need to be copied into the kernel. It is lmshare_info_t 1039 * for add operations and share_name for delete operations. 1040 */ 1041 int 1042 smb_server_share(void *arg, boolean_t add_share) 1043 { 1044 smb_server_t *sv; 1045 int rc; 1046 1047 if ((rc = smb_server_lookup(&sv)) == 0) { 1048 mutex_enter(&sv->sv_mutex); 1049 switch (sv->sv_state) { 1050 case SMB_SERVER_STATE_RUNNING: 1051 mutex_exit(&sv->sv_mutex); 1052 (void) smb_kshare_upcall(sv->sv_lmshrd, arg, add_share); 1053 break; 1054 default: 1055 mutex_exit(&sv->sv_mutex); 1056 break; 1057 } 1058 smb_server_release(sv); 1059 } 1060 1061 return (rc); 1062 } 1063 #endif /* _KERNEL */ 1064 1065 int 1066 smb_server_unshare(const char *sharename) 1067 { 1068 smb_server_t *sv; 1069 int rc; 1070 1071 if ((rc = smb_server_lookup(&sv))) 1072 return (rc); 1073 1074 mutex_enter(&sv->sv_mutex); 1075 switch (sv->sv_state) { 1076 case SMB_SERVER_STATE_RUNNING: 1077 case SMB_SERVER_STATE_STOPPING: 1078 break; 1079 default: 1080 mutex_exit(&sv->sv_mutex); 1081 smb_server_release(sv); 1082 return (ENOTACTIVE); 1083 } 1084 mutex_exit(&sv->sv_mutex); 1085 1086 smb_server_disconnect_share(sv, sharename); 1087 1088 smb_server_release(sv); 1089 return (0); 1090 } 1091 1092 /* 1093 * Disconnect the specified share. 1094 * Typically called when a share has been removed. 1095 */ 1096 static void 1097 smb_server_disconnect_share(smb_server_t *sv, const char *sharename) 1098 { 1099 smb_llist_t *ll; 1100 smb_session_t *session; 1101 1102 ll = &sv->sv_session_list; 1103 smb_llist_enter(ll, RW_READER); 1104 1105 session = smb_llist_head(ll); 1106 while (session) { 1107 SMB_SESSION_VALID(session); 1108 smb_rwx_rwenter(&session->s_lock, RW_READER); 1109 switch (session->s_state) { 1110 case SMB_SESSION_STATE_NEGOTIATED: 1111 smb_rwx_rwexit(&session->s_lock); 1112 smb_session_disconnect_share(session, sharename); 1113 break; 1114 default: 1115 smb_rwx_rwexit(&session->s_lock); 1116 break; 1117 } 1118 session = smb_llist_next(ll, session); 1119 } 1120 1121 smb_llist_exit(ll); 1122 } 1123 1124 /* 1125 * ***************************************************************************** 1126 * **************** Functions called from the internal layers ****************** 1127 * ***************************************************************************** 1128 * 1129 * These functions are provided the relevant smb server by the caller. 1130 */ 1131 1132 void 1133 smb_server_get_cfg(smb_server_t *sv, smb_kmod_cfg_t *cfg) 1134 { 1135 rw_enter(&sv->sv_cfg_lock, RW_READER); 1136 bcopy(&sv->sv_cfg, cfg, sizeof (*cfg)); 1137 rw_exit(&sv->sv_cfg_lock); 1138 } 1139 1140 /* 1141 * 1142 */ 1143 void 1144 smb_server_inc_nbt_sess(smb_server_t *sv) 1145 { 1146 SMB_SERVER_VALID(sv); 1147 atomic_inc_32(&sv->sv_nbt_sess); 1148 } 1149 1150 void 1151 smb_server_dec_nbt_sess(smb_server_t *sv) 1152 { 1153 SMB_SERVER_VALID(sv); 1154 atomic_dec_32(&sv->sv_nbt_sess); 1155 } 1156 1157 void 1158 smb_server_inc_tcp_sess(smb_server_t *sv) 1159 { 1160 SMB_SERVER_VALID(sv); 1161 atomic_inc_32(&sv->sv_tcp_sess); 1162 } 1163 1164 void 1165 smb_server_dec_tcp_sess(smb_server_t *sv) 1166 { 1167 SMB_SERVER_VALID(sv); 1168 atomic_dec_32(&sv->sv_tcp_sess); 1169 } 1170 1171 void 1172 smb_server_inc_users(smb_server_t *sv) 1173 { 1174 SMB_SERVER_VALID(sv); 1175 atomic_inc_32(&sv->sv_users); 1176 } 1177 1178 void 1179 smb_server_dec_users(smb_server_t *sv) 1180 { 1181 SMB_SERVER_VALID(sv); 1182 atomic_dec_32(&sv->sv_users); 1183 } 1184 1185 void 1186 smb_server_inc_trees(smb_server_t *sv) 1187 { 1188 SMB_SERVER_VALID(sv); 1189 atomic_inc_32(&sv->sv_trees); 1190 } 1191 1192 void 1193 smb_server_dec_trees(smb_server_t *sv) 1194 { 1195 SMB_SERVER_VALID(sv); 1196 atomic_dec_32(&sv->sv_trees); 1197 } 1198 1199 void 1200 smb_server_inc_files(smb_server_t *sv) 1201 { 1202 SMB_SERVER_VALID(sv); 1203 atomic_inc_32(&sv->sv_files); 1204 } 1205 1206 void 1207 smb_server_dec_files(smb_server_t *sv) 1208 { 1209 SMB_SERVER_VALID(sv); 1210 atomic_dec_32(&sv->sv_files); 1211 } 1212 1213 void 1214 smb_server_inc_pipes(smb_server_t *sv) 1215 { 1216 SMB_SERVER_VALID(sv); 1217 atomic_inc_32(&sv->sv_pipes); 1218 } 1219 1220 void 1221 smb_server_dec_pipes(smb_server_t *sv) 1222 { 1223 SMB_SERVER_VALID(sv); 1224 atomic_dec_32(&sv->sv_pipes); 1225 } 1226 1227 void 1228 smb_server_add_rxb(smb_server_t *sv, int64_t value) 1229 { 1230 SMB_SERVER_VALID(sv); 1231 atomic_add_64(&sv->sv_rxb, value); 1232 } 1233 1234 void 1235 smb_server_add_txb(smb_server_t *sv, int64_t value) 1236 { 1237 SMB_SERVER_VALID(sv); 1238 atomic_add_64(&sv->sv_txb, value); 1239 } 1240 1241 void 1242 smb_server_inc_req(smb_server_t *sv) 1243 { 1244 SMB_SERVER_VALID(sv); 1245 atomic_inc_64(&sv->sv_nreq); 1246 } 1247 1248 /* 1249 * ***************************************************************************** 1250 * *************************** Static Functions ******************************** 1251 * ***************************************************************************** 1252 */ 1253 1254 static void 1255 smb_server_timers(smb_thread_t *thread, void *arg) 1256 { 1257 smb_server_t *sv = (smb_server_t *)arg; 1258 1259 ASSERT(sv != NULL); 1260 1261 /* 1262 * This kills old inactive sessions and expired durable 1263 * handles. The session code expects one call per minute. 1264 */ 1265 while (smb_thread_continue_timedwait(thread, 60 /* Seconds */)) { 1266 if (sv->sv_cfg.skc_keepalive != 0) 1267 smb_session_timers(sv); 1268 smb2_durable_timers(sv); 1269 } 1270 } 1271 1272 /* 1273 * smb_server_kstat_init 1274 */ 1275 static void 1276 smb_server_kstat_init(smb_server_t *sv) 1277 { 1278 1279 sv->sv_ksp = kstat_create_zone(SMBSRV_KSTAT_MODULE, 0, 1280 SMBSRV_KSTAT_STATISTICS, SMBSRV_KSTAT_CLASS, KSTAT_TYPE_RAW, 1281 sizeof (smbsrv_kstats_t), 0, sv->sv_zid); 1282 1283 if (sv->sv_ksp != NULL) { 1284 sv->sv_ksp->ks_update = smb_server_kstat_update; 1285 sv->sv_ksp->ks_private = sv; 1286 ((smbsrv_kstats_t *)sv->sv_ksp->ks_data)->ks_start_time = 1287 sv->sv_start_time; 1288 smb_dispatch_stats_init(sv); 1289 smb2_dispatch_stats_init(sv); 1290 kstat_install(sv->sv_ksp); 1291 } else { 1292 cmn_err(CE_WARN, "SMB Server: Statistics unavailable"); 1293 } 1294 1295 sv->sv_legacy_ksp = kstat_create_zone(SMBSRV_KSTAT_MODULE, 0, 1296 SMBSRV_KSTAT_NAME, SMBSRV_KSTAT_CLASS, KSTAT_TYPE_NAMED, 1297 sizeof (smb_server_legacy_kstat_t) / sizeof (kstat_named_t), 1298 0, sv->sv_zid); 1299 1300 if (sv->sv_legacy_ksp != NULL) { 1301 smb_server_legacy_kstat_t *ksd; 1302 1303 ksd = sv->sv_legacy_ksp->ks_data; 1304 1305 (void) strlcpy(ksd->ls_files.name, "open_files", 1306 sizeof (ksd->ls_files.name)); 1307 ksd->ls_files.data_type = KSTAT_DATA_UINT32; 1308 1309 (void) strlcpy(ksd->ls_trees.name, "connections", 1310 sizeof (ksd->ls_trees.name)); 1311 ksd->ls_trees.data_type = KSTAT_DATA_UINT32; 1312 1313 (void) strlcpy(ksd->ls_users.name, "connections", 1314 sizeof (ksd->ls_users.name)); 1315 ksd->ls_users.data_type = KSTAT_DATA_UINT32; 1316 1317 mutex_init(&sv->sv_legacy_ksmtx, NULL, MUTEX_DEFAULT, NULL); 1318 sv->sv_legacy_ksp->ks_lock = &sv->sv_legacy_ksmtx; 1319 sv->sv_legacy_ksp->ks_update = smb_server_legacy_kstat_update; 1320 kstat_install(sv->sv_legacy_ksp); 1321 } 1322 } 1323 1324 /* 1325 * smb_server_kstat_fini 1326 */ 1327 static void 1328 smb_server_kstat_fini(smb_server_t *sv) 1329 { 1330 if (sv->sv_legacy_ksp != NULL) { 1331 kstat_delete(sv->sv_legacy_ksp); 1332 mutex_destroy(&sv->sv_legacy_ksmtx); 1333 sv->sv_legacy_ksp = NULL; 1334 } 1335 1336 if (sv->sv_ksp != NULL) { 1337 kstat_delete(sv->sv_ksp); 1338 sv->sv_ksp = NULL; 1339 smb_dispatch_stats_fini(sv); 1340 smb2_dispatch_stats_fini(sv); 1341 } 1342 } 1343 1344 /* 1345 * smb_server_kstat_update 1346 */ 1347 static int 1348 smb_server_kstat_update(kstat_t *ksp, int rw) 1349 { 1350 smb_server_t *sv; 1351 smbsrv_kstats_t *ksd; 1352 1353 if (rw == KSTAT_READ) { 1354 sv = ksp->ks_private; 1355 SMB_SERVER_VALID(sv); 1356 ksd = (smbsrv_kstats_t *)ksp->ks_data; 1357 /* 1358 * Counters 1359 */ 1360 ksd->ks_nbt_sess = sv->sv_nbt_sess; 1361 ksd->ks_tcp_sess = sv->sv_tcp_sess; 1362 ksd->ks_users = sv->sv_users; 1363 ksd->ks_trees = sv->sv_trees; 1364 ksd->ks_files = sv->sv_files; 1365 ksd->ks_pipes = sv->sv_pipes; 1366 /* 1367 * Throughput 1368 */ 1369 ksd->ks_txb = sv->sv_txb; 1370 ksd->ks_rxb = sv->sv_rxb; 1371 ksd->ks_nreq = sv->sv_nreq; 1372 /* 1373 * Busyness 1374 */ 1375 ksd->ks_maxreqs = sv->sv_cfg.skc_maxworkers; 1376 smb_srqueue_update(&sv->sv_srqueue, 1377 &ksd->ks_utilization); 1378 /* 1379 * Latency & Throughput of the requests 1380 */ 1381 smb_dispatch_stats_update(sv, ksd->ks_reqs1, 0, SMB_COM_NUM); 1382 smb2_dispatch_stats_update(sv, ksd->ks_reqs2, 0, SMB2__NCMDS); 1383 return (0); 1384 } 1385 if (rw == KSTAT_WRITE) 1386 return (EACCES); 1387 1388 return (EIO); 1389 } 1390 1391 static int 1392 smb_server_legacy_kstat_update(kstat_t *ksp, int rw) 1393 { 1394 smb_server_t *sv; 1395 smb_server_legacy_kstat_t *ksd; 1396 int rc; 1397 1398 switch (rw) { 1399 case KSTAT_WRITE: 1400 rc = EACCES; 1401 break; 1402 case KSTAT_READ: 1403 if (!smb_server_lookup(&sv)) { 1404 ASSERT(MUTEX_HELD(ksp->ks_lock)); 1405 ASSERT(sv->sv_legacy_ksp == ksp); 1406 ksd = (smb_server_legacy_kstat_t *)ksp->ks_data; 1407 ksd->ls_files.value.ui32 = sv->sv_files + sv->sv_pipes; 1408 ksd->ls_trees.value.ui32 = sv->sv_trees; 1409 ksd->ls_users.value.ui32 = sv->sv_users; 1410 smb_server_release(sv); 1411 rc = 0; 1412 break; 1413 } 1414 /* FALLTHROUGH */ 1415 default: 1416 rc = EIO; 1417 break; 1418 } 1419 return (rc); 1420 1421 } 1422 1423 /* 1424 * smb_server_shutdown 1425 */ 1426 static void 1427 smb_server_shutdown(smb_server_t *sv) 1428 { 1429 smb_llist_t *sl = &sv->sv_session_list; 1430 smb_session_t *session; 1431 clock_t time; 1432 1433 SMB_SERVER_VALID(sv); 1434 1435 /* 1436 * Stop the listeners first, so we don't get any more 1437 * new work while we're trying to shut down. 1438 */ 1439 smb_server_listener_stop(&sv->sv_nbt_daemon); 1440 smb_server_listener_stop(&sv->sv_tcp_daemon); 1441 smb_thread_stop(&sv->si_thread_timers); 1442 1443 /* Disconnect all of the sessions */ 1444 smb_llist_enter(sl, RW_READER); 1445 session = smb_llist_head(sl); 1446 while (session != NULL) { 1447 smb_session_disconnect(session); 1448 session = smb_llist_next(sl, session); 1449 } 1450 smb_llist_exit(sl); 1451 1452 /* 1453 * Wake up any threads we might have blocked. 1454 * Must precede kdoor_close etc. because those will 1455 * wait for such threads to get out. 1456 */ 1457 smb_event_cancel(sv, 0); 1458 smb_threshold_wake_all(&sv->sv_ssetup_ct); 1459 smb_threshold_wake_all(&sv->sv_tcon_ct); 1460 smb_threshold_wake_all(&sv->sv_opipe_ct); 1461 1462 /* 1463 * Wait for the session list to empty. 1464 * (cv_signal in smb_server_destroy_session) 1465 * 1466 * This should not take long, but if there are any leaked 1467 * references to ofiles, trees, or users, there could be a 1468 * session hanging around. If that happens, the ll_count 1469 * never gets to zero and we'll never get the sv_signal. 1470 * Defend against that problem using timed wait, then 1471 * complain if we find sessions left over and continue 1472 * with shutdown in spite of any leaked sessions. 1473 * That's better than a server that won't reboot. 1474 */ 1475 time = SEC_TO_TICK(10) + ddi_get_lbolt(); 1476 mutex_enter(&sv->sv_mutex); 1477 while (sv->sv_session_list.ll_count != 0) { 1478 if (cv_timedwait(&sv->sv_cv, &sv->sv_mutex, time) < 0) 1479 break; 1480 } 1481 mutex_exit(&sv->sv_mutex); 1482 #ifdef DEBUG 1483 if (sv->sv_session_list.ll_count != 0) { 1484 cmn_err(CE_NOTE, "shutdown leaked sessions"); 1485 debug_enter("shutdown leaked sessions"); 1486 } 1487 #endif 1488 1489 /* 1490 * Clean out any durable handles. After this we should 1491 * have no ofiles remaining (and no more oplock breaks). 1492 */ 1493 smb2_dh_shutdown(sv); 1494 1495 smb_kdoor_close(sv); 1496 #ifdef _KERNEL 1497 smb_kshare_door_fini(sv->sv_lmshrd); 1498 #endif /* _KERNEL */ 1499 sv->sv_lmshrd = NULL; 1500 1501 smb_export_stop(sv); 1502 smb_kshare_stop(sv); 1503 1504 /* 1505 * Both kshare and the oplock break sub-systems may have 1506 * taskq jobs on the spcial "server" session, until we've 1507 * closed all ofiles and stopped the kshare exporter. 1508 * Now it's safe to destroy the server session, but first 1509 * wait for any requests on it to finish. Note that for 1510 * normal sessions, this happens in smb_session_cancel, 1511 * but that's not called for the server session. 1512 */ 1513 if (sv->sv_rootuser != NULL) { 1514 smb_user_logoff(sv->sv_rootuser); 1515 smb_user_release(sv->sv_rootuser); 1516 sv->sv_rootuser = NULL; 1517 } 1518 if (sv->sv_session != NULL) { 1519 smb_slist_wait_for_empty(&sv->sv_session->s_req_list); 1520 1521 /* Just in case import left users and trees */ 1522 smb_session_logoff(sv->sv_session); 1523 1524 smb_session_delete(sv->sv_session); 1525 sv->sv_session = NULL; 1526 } 1527 1528 if (sv->sv_receiver_pool != NULL) { 1529 taskq_destroy(sv->sv_receiver_pool); 1530 sv->sv_receiver_pool = NULL; 1531 } 1532 1533 if (sv->sv_worker_pool != NULL) { 1534 taskq_destroy(sv->sv_worker_pool); 1535 sv->sv_worker_pool = NULL; 1536 } 1537 1538 smb_server_fsop_stop(sv); 1539 } 1540 1541 /* 1542 * smb_server_listener_init 1543 * 1544 * Initializes listener contexts. 1545 */ 1546 static void 1547 smb_server_listener_init( 1548 smb_server_t *sv, 1549 smb_listener_daemon_t *ld, 1550 char *name, 1551 in_port_t port, 1552 int family) 1553 { 1554 ASSERT(ld->ld_magic != SMB_LISTENER_MAGIC); 1555 1556 bzero(ld, sizeof (*ld)); 1557 1558 ld->ld_sv = sv; 1559 ld->ld_family = family; 1560 ld->ld_port = port; 1561 1562 if (family == AF_INET) { 1563 ld->ld_sin.sin_family = (uint32_t)family; 1564 ld->ld_sin.sin_port = htons(port); 1565 ld->ld_sin.sin_addr.s_addr = htonl(INADDR_ANY); 1566 } else { 1567 ld->ld_sin6.sin6_family = (uint32_t)family; 1568 ld->ld_sin6.sin6_port = htons(port); 1569 (void) memset(&ld->ld_sin6.sin6_addr.s6_addr, 0, 1570 sizeof (ld->ld_sin6.sin6_addr.s6_addr)); 1571 } 1572 1573 smb_thread_init(&ld->ld_thread, name, smb_server_listener, ld, 1574 smbsrv_listen_pri); 1575 ld->ld_magic = SMB_LISTENER_MAGIC; 1576 } 1577 1578 /* 1579 * smb_server_listener_destroy 1580 * 1581 * Destroyes listener contexts. 1582 */ 1583 static void 1584 smb_server_listener_destroy(smb_listener_daemon_t *ld) 1585 { 1586 /* 1587 * Note that if startup fails early, we can legitimately 1588 * get here with an all-zeros object. 1589 */ 1590 if (ld->ld_magic == 0) 1591 return; 1592 1593 SMB_LISTENER_VALID(ld); 1594 ASSERT(ld->ld_so == NULL); 1595 smb_thread_destroy(&ld->ld_thread); 1596 ld->ld_magic = 0; 1597 } 1598 1599 /* 1600 * smb_server_listener_start 1601 * 1602 * Starts the listener associated with the context passed in. 1603 * 1604 * Return: 0 Success 1605 * not 0 Failure 1606 */ 1607 static int 1608 smb_server_listener_start(smb_listener_daemon_t *ld) 1609 { 1610 int rc; 1611 uint32_t on; 1612 uint32_t off; 1613 1614 SMB_LISTENER_VALID(ld); 1615 1616 if (ld->ld_so != NULL) 1617 return (EINVAL); 1618 1619 ld->ld_so = smb_socreate(ld->ld_family, SOCK_STREAM, 0); 1620 if (ld->ld_so == NULL) { 1621 cmn_err(CE_WARN, "port %d: socket create failed", ld->ld_port); 1622 return (ENOMEM); 1623 } 1624 1625 off = 0; 1626 (void) ksocket_setsockopt(ld->ld_so, SOL_SOCKET, 1627 SO_MAC_EXEMPT, &off, sizeof (off), CRED()); 1628 1629 on = 1; 1630 (void) ksocket_setsockopt(ld->ld_so, SOL_SOCKET, 1631 SO_REUSEADDR, &on, sizeof (on), CRED()); 1632 1633 if (ld->ld_family == AF_INET) { 1634 rc = ksocket_bind(ld->ld_so, 1635 (struct sockaddr *)&ld->ld_sin, 1636 sizeof (ld->ld_sin), CRED()); 1637 } else { 1638 rc = ksocket_bind(ld->ld_so, 1639 (struct sockaddr *)&ld->ld_sin6, 1640 sizeof (ld->ld_sin6), CRED()); 1641 } 1642 1643 if (rc != 0) { 1644 cmn_err(CE_WARN, "port %d: bind failed", ld->ld_port); 1645 return (rc); 1646 } 1647 1648 rc = ksocket_listen(ld->ld_so, 20, CRED()); 1649 if (rc < 0) { 1650 cmn_err(CE_WARN, "port %d: listen failed", ld->ld_port); 1651 return (rc); 1652 } 1653 1654 ksocket_hold(ld->ld_so); 1655 rc = smb_thread_start(&ld->ld_thread); 1656 if (rc != 0) { 1657 ksocket_rele(ld->ld_so); 1658 cmn_err(CE_WARN, "port %d: listener failed to start", 1659 ld->ld_port); 1660 return (rc); 1661 } 1662 return (0); 1663 } 1664 1665 /* 1666 * smb_server_listener_stop 1667 * 1668 * Stops the listener associated with the context passed in. 1669 */ 1670 static void 1671 smb_server_listener_stop(smb_listener_daemon_t *ld) 1672 { 1673 SMB_LISTENER_VALID(ld); 1674 1675 if (ld->ld_so != NULL) { 1676 smb_soshutdown(ld->ld_so); 1677 smb_sodestroy(ld->ld_so); 1678 smb_thread_stop(&ld->ld_thread); 1679 ld->ld_so = NULL; 1680 } 1681 } 1682 1683 /* 1684 * smb_server_listener 1685 * 1686 * Entry point of the listeners. 1687 */ 1688 static void 1689 smb_server_listener(smb_thread_t *thread, void *arg) 1690 { 1691 _NOTE(ARGUNUSED(thread)) 1692 smb_listener_daemon_t *ld; 1693 ksocket_t s_so; 1694 int on; 1695 int txbuf_size; 1696 1697 ld = (smb_listener_daemon_t *)arg; 1698 1699 SMB_LISTENER_VALID(ld); 1700 1701 DTRACE_PROBE1(so__wait__accept, struct sonode *, ld->ld_so); 1702 1703 for (;;) { 1704 int ret = ksocket_accept(ld->ld_so, NULL, NULL, &s_so, CRED()); 1705 1706 switch (ret) { 1707 case 0: 1708 break; 1709 case ECONNABORTED: 1710 continue; 1711 case EINTR: 1712 case EBADF: /* libfakekernel */ 1713 goto out; 1714 default: 1715 cmn_err(CE_WARN, 1716 "smb_server_listener: ksocket_accept(%d)", 1717 ret); 1718 goto out; 1719 } 1720 1721 DTRACE_PROBE1(so__accept, struct sonode *, s_so); 1722 1723 on = 1; 1724 (void) ksocket_setsockopt(s_so, IPPROTO_TCP, TCP_NODELAY, 1725 &on, sizeof (on), CRED()); 1726 1727 on = 1; 1728 (void) ksocket_setsockopt(s_so, SOL_SOCKET, SO_KEEPALIVE, 1729 &on, sizeof (on), CRED()); 1730 1731 txbuf_size = 128*1024; 1732 (void) ksocket_setsockopt(s_so, SOL_SOCKET, SO_SNDBUF, 1733 (const void *)&txbuf_size, sizeof (txbuf_size), CRED()); 1734 1735 /* 1736 * Create a session for this connection. 1737 */ 1738 smb_server_create_session(ld, s_so); 1739 } 1740 out: 1741 ksocket_rele(ld->ld_so); 1742 } 1743 1744 /* 1745 * smb_server_receiver 1746 * 1747 * Entry point of the receiver threads. 1748 * Also does cleanup when socket disconnected. 1749 */ 1750 static void 1751 smb_server_receiver(void *arg) 1752 { 1753 smb_session_t *session; 1754 1755 session = (smb_session_t *)arg; 1756 1757 /* We stay in here until socket disconnect. */ 1758 smb_session_receiver(session); 1759 1760 ASSERT(session->s_state == SMB_SESSION_STATE_SHUTDOWN); 1761 smb_server_destroy_session(session); 1762 } 1763 1764 /* 1765 * smb_server_lookup 1766 * 1767 * This function finds the server associated with the zone of the 1768 * caller. Note: requires a fix in the dynamic taskq code: 1769 * 1501 taskq_create_proc ... TQ_DYNAMIC puts tasks in p0 1770 */ 1771 int 1772 smb_server_lookup(smb_server_t **psv) 1773 { 1774 zoneid_t zid; 1775 smb_server_t *sv; 1776 1777 zid = getzoneid(); 1778 1779 smb_llist_enter(&smb_servers, RW_READER); 1780 sv = smb_llist_head(&smb_servers); 1781 while (sv) { 1782 SMB_SERVER_VALID(sv); 1783 if (sv->sv_zid == zid) { 1784 mutex_enter(&sv->sv_mutex); 1785 if (sv->sv_state != SMB_SERVER_STATE_DELETING) { 1786 sv->sv_refcnt++; 1787 mutex_exit(&sv->sv_mutex); 1788 smb_llist_exit(&smb_servers); 1789 *psv = sv; 1790 return (0); 1791 } 1792 mutex_exit(&sv->sv_mutex); 1793 break; 1794 } 1795 sv = smb_llist_next(&smb_servers, sv); 1796 } 1797 smb_llist_exit(&smb_servers); 1798 return (EPERM); 1799 } 1800 1801 /* 1802 * smb_server_release 1803 * 1804 * This function decrements the reference count of the server and signals its 1805 * condition variable if the state of the server is SMB_SERVER_STATE_DELETING. 1806 */ 1807 void 1808 smb_server_release(smb_server_t *sv) 1809 { 1810 SMB_SERVER_VALID(sv); 1811 1812 mutex_enter(&sv->sv_mutex); 1813 ASSERT(sv->sv_refcnt); 1814 sv->sv_refcnt--; 1815 if ((sv->sv_refcnt == 0) && (sv->sv_state == SMB_SERVER_STATE_DELETING)) 1816 cv_signal(&sv->sv_cv); 1817 mutex_exit(&sv->sv_mutex); 1818 } 1819 1820 /* 1821 * Enumerate the users associated with a session list. 1822 */ 1823 static void 1824 smb_server_enum_users(smb_server_t *sv, smb_svcenum_t *svcenum) 1825 { 1826 smb_llist_t *ll = &sv->sv_session_list; 1827 smb_session_t *sn; 1828 smb_llist_t *ulist; 1829 smb_user_t *user; 1830 int rc = 0; 1831 1832 smb_llist_enter(ll, RW_READER); 1833 sn = smb_llist_head(ll); 1834 1835 while (sn != NULL) { 1836 SMB_SESSION_VALID(sn); 1837 ulist = &sn->s_user_list; 1838 smb_llist_enter(ulist, RW_READER); 1839 user = smb_llist_head(ulist); 1840 1841 while (user != NULL) { 1842 if (smb_user_hold(user)) { 1843 rc = smb_user_enum(user, svcenum); 1844 smb_user_release(user); 1845 if (rc != 0) 1846 break; 1847 } 1848 1849 user = smb_llist_next(ulist, user); 1850 } 1851 1852 smb_llist_exit(ulist); 1853 1854 if (rc != 0) 1855 break; 1856 1857 sn = smb_llist_next(ll, sn); 1858 } 1859 1860 smb_llist_exit(ll); 1861 } 1862 1863 /* 1864 * Enumerate the trees/files associated with a session list. 1865 */ 1866 static void 1867 smb_server_enum_trees(smb_server_t *sv, smb_svcenum_t *svcenum) 1868 { 1869 smb_llist_t *ll = &sv->sv_session_list; 1870 smb_session_t *sn; 1871 smb_llist_t *tlist; 1872 smb_tree_t *tree; 1873 int rc = 0; 1874 1875 smb_llist_enter(ll, RW_READER); 1876 sn = smb_llist_head(ll); 1877 1878 while (sn != NULL) { 1879 SMB_SESSION_VALID(sn); 1880 tlist = &sn->s_tree_list; 1881 smb_llist_enter(tlist, RW_READER); 1882 tree = smb_llist_head(tlist); 1883 1884 while (tree != NULL) { 1885 if (smb_tree_hold(tree)) { 1886 rc = smb_tree_enum(tree, svcenum); 1887 smb_tree_release(tree); 1888 if (rc != 0) 1889 break; 1890 } 1891 1892 tree = smb_llist_next(tlist, tree); 1893 } 1894 1895 smb_llist_exit(tlist); 1896 1897 if (rc != 0) 1898 break; 1899 1900 sn = smb_llist_next(ll, sn); 1901 } 1902 1903 smb_llist_exit(ll); 1904 } 1905 1906 /* 1907 * Disconnect sessions associated with the specified client and username. 1908 * Empty strings are treated as wildcards. 1909 */ 1910 static int 1911 smb_server_session_disconnect(smb_server_t *sv, 1912 const char *client, const char *name) 1913 { 1914 smb_llist_t *ll = &sv->sv_session_list; 1915 smb_session_t *sn; 1916 smb_llist_t *ulist; 1917 smb_user_t *user; 1918 int count = 0; 1919 1920 smb_llist_enter(ll, RW_READER); 1921 1922 for (sn = smb_llist_head(ll); 1923 sn != NULL; 1924 sn = smb_llist_next(ll, sn)) { 1925 SMB_SESSION_VALID(sn); 1926 1927 if (*client != '\0' && !smb_session_isclient(sn, client)) 1928 continue; 1929 1930 ulist = &sn->s_user_list; 1931 smb_llist_enter(ulist, RW_READER); 1932 1933 for (user = smb_llist_head(ulist); 1934 user != NULL; 1935 user = smb_llist_next(ulist, user)) { 1936 1937 if (smb_user_hold(user)) { 1938 1939 if (*name == '\0' || 1940 smb_user_namecmp(user, name)) { 1941 smb_user_logoff(user); 1942 count++; 1943 } 1944 1945 smb_user_release(user); 1946 } 1947 } 1948 1949 smb_llist_exit(ulist); 1950 } 1951 1952 smb_llist_exit(ll); 1953 return (count); 1954 } 1955 1956 /* 1957 * Close a file by its unique id. 1958 */ 1959 static int 1960 smb_server_fclose(smb_server_t *sv, uint32_t uniqid) 1961 { 1962 smb_llist_t *ll; 1963 smb_session_t *sn; 1964 smb_llist_t *tlist; 1965 smb_tree_t *tree; 1966 int rc = ENOENT; 1967 1968 ll = &sv->sv_session_list; 1969 smb_llist_enter(ll, RW_READER); 1970 sn = smb_llist_head(ll); 1971 1972 while ((sn != NULL) && (rc == ENOENT)) { 1973 SMB_SESSION_VALID(sn); 1974 tlist = &sn->s_tree_list; 1975 smb_llist_enter(tlist, RW_READER); 1976 tree = smb_llist_head(tlist); 1977 1978 while ((tree != NULL) && (rc == ENOENT)) { 1979 if (smb_tree_hold(tree)) { 1980 rc = smb_tree_fclose(tree, uniqid); 1981 smb_tree_release(tree); 1982 } 1983 1984 tree = smb_llist_next(tlist, tree); 1985 } 1986 1987 smb_llist_exit(tlist); 1988 sn = smb_llist_next(ll, sn); 1989 } 1990 1991 smb_llist_exit(ll); 1992 return (rc); 1993 } 1994 1995 /* 1996 * This is used by SMB2 session setup to logoff a previous session, 1997 * so it can force a logoff that we haven't noticed yet. 1998 * This is not called frequently, so we just walk the list of 1999 * connections searching for the user. 2000 */ 2001 void 2002 smb_server_logoff_ssnid(smb_request_t *sr, uint64_t ssnid) 2003 { 2004 smb_server_t *sv = sr->sr_server; 2005 smb_llist_t *sess_list; 2006 smb_session_t *sess; 2007 2008 if (sv->sv_state != SMB_SERVER_STATE_RUNNING) 2009 return; 2010 2011 sess_list = &sv->sv_session_list; 2012 smb_llist_enter(sess_list, RW_READER); 2013 2014 for (sess = smb_llist_head(sess_list); 2015 sess != NULL; 2016 sess = smb_llist_next(sess_list, sess)) { 2017 2018 smb_user_t *user; 2019 2020 SMB_SESSION_VALID(sess); 2021 2022 if (sess->dialect < SMB_VERS_2_BASE) 2023 continue; 2024 2025 if (sess->s_state != SMB_SESSION_STATE_NEGOTIATED) 2026 continue; 2027 2028 user = smb_session_lookup_ssnid(sess, ssnid); 2029 if (user == NULL) 2030 continue; 2031 2032 if (!smb_is_same_user(user->u_cred, sr->user_cr)) { 2033 smb_user_release(user); 2034 continue; 2035 } 2036 2037 /* Treat this as if we lost the connection */ 2038 user->preserve_opens = SMB2_DH_PRESERVE_SOME; 2039 smb_user_logoff(user); 2040 smb_user_release(user); 2041 2042 /* 2043 * The above may have left work on the delete queues 2044 */ 2045 smb_llist_flush(&sess->s_tree_list); 2046 smb_llist_flush(&sess->s_user_list); 2047 } 2048 2049 smb_llist_exit(sess_list); 2050 } 2051 2052 /* See also: libsmb smb_kmod_setcfg */ 2053 static void 2054 smb_server_store_cfg(smb_server_t *sv, smb_ioc_cfg_t *ioc) 2055 { 2056 if (ioc->maxconnections == 0) 2057 ioc->maxconnections = 0xFFFFFFFF; 2058 2059 if (ioc->encrypt == SMB_CONFIG_REQUIRED && 2060 ioc->max_protocol < SMB_VERS_3_0) { 2061 cmn_err(CE_WARN, "Server set to require encryption; " 2062 "forcing max_protocol to 3.0"); 2063 ioc->max_protocol = SMB_VERS_3_0; 2064 } 2065 2066 sv->sv_cfg.skc_maxworkers = ioc->maxworkers; 2067 sv->sv_cfg.skc_maxconnections = ioc->maxconnections; 2068 sv->sv_cfg.skc_keepalive = ioc->keepalive; 2069 sv->sv_cfg.skc_restrict_anon = ioc->restrict_anon; 2070 sv->sv_cfg.skc_signing_enable = ioc->signing_enable; 2071 sv->sv_cfg.skc_signing_required = ioc->signing_required; 2072 sv->sv_cfg.skc_oplock_enable = ioc->oplock_enable; 2073 sv->sv_cfg.skc_sync_enable = ioc->sync_enable; 2074 sv->sv_cfg.skc_secmode = ioc->secmode; 2075 sv->sv_cfg.skc_netbios_enable = ioc->netbios_enable; 2076 sv->sv_cfg.skc_ipv6_enable = ioc->ipv6_enable; 2077 sv->sv_cfg.skc_print_enable = ioc->print_enable; 2078 sv->sv_cfg.skc_traverse_mounts = ioc->traverse_mounts; 2079 sv->sv_cfg.skc_max_protocol = ioc->max_protocol; 2080 sv->sv_cfg.skc_min_protocol = ioc->min_protocol; 2081 sv->sv_cfg.skc_encrypt = ioc->encrypt; 2082 sv->sv_cfg.skc_encrypt_cipher = ioc->encrypt_cipher; 2083 sv->sv_cfg.skc_execflags = ioc->exec_flags; 2084 sv->sv_cfg.skc_negtok_len = ioc->negtok_len; 2085 sv->sv_cfg.skc_version = ioc->version; 2086 sv->sv_cfg.skc_initial_credits = ioc->initial_credits; 2087 sv->sv_cfg.skc_maximum_credits = ioc->maximum_credits; 2088 2089 (void) memcpy(sv->sv_cfg.skc_machine_uuid, ioc->machine_uuid, 2090 sizeof (uuid_t)); 2091 (void) memcpy(sv->sv_cfg.skc_negtok, ioc->negtok, 2092 sizeof (sv->sv_cfg.skc_negtok)); 2093 (void) memcpy(sv->sv_cfg.skc_native_os, ioc->native_os, 2094 sizeof (sv->sv_cfg.skc_native_os)); 2095 (void) memcpy(sv->sv_cfg.skc_native_lm, ioc->native_lm, 2096 sizeof (sv->sv_cfg.skc_native_lm)); 2097 2098 (void) strlcpy(sv->sv_cfg.skc_nbdomain, ioc->nbdomain, 2099 sizeof (sv->sv_cfg.skc_nbdomain)); 2100 (void) strlcpy(sv->sv_cfg.skc_fqdn, ioc->fqdn, 2101 sizeof (sv->sv_cfg.skc_fqdn)); 2102 (void) strlcpy(sv->sv_cfg.skc_hostname, ioc->hostname, 2103 sizeof (sv->sv_cfg.skc_hostname)); 2104 (void) strlcpy(sv->sv_cfg.skc_system_comment, ioc->system_comment, 2105 sizeof (sv->sv_cfg.skc_system_comment)); 2106 } 2107 2108 static int 2109 smb_server_fsop_start(smb_server_t *sv) 2110 { 2111 int error; 2112 2113 error = smb_node_root_init(sv, &sv->si_root_smb_node); 2114 if (error != 0) 2115 sv->si_root_smb_node = NULL; 2116 2117 return (error); 2118 } 2119 2120 static void 2121 smb_server_fsop_stop(smb_server_t *sv) 2122 { 2123 if (sv->si_root_smb_node != NULL) { 2124 smb_node_release(sv->si_root_smb_node); 2125 sv->si_root_smb_node = NULL; 2126 } 2127 } 2128 2129 smb_event_t * 2130 smb_event_create(smb_server_t *sv, int timeout) 2131 { 2132 smb_event_t *event; 2133 2134 if (smb_server_is_stopping(sv)) 2135 return (NULL); 2136 2137 event = kmem_cache_alloc(smb_cache_event, KM_SLEEP); 2138 2139 bzero(event, sizeof (smb_event_t)); 2140 mutex_init(&event->se_mutex, NULL, MUTEX_DEFAULT, NULL); 2141 cv_init(&event->se_cv, NULL, CV_DEFAULT, NULL); 2142 event->se_magic = SMB_EVENT_MAGIC; 2143 event->se_txid = smb_event_alloc_txid(); 2144 event->se_server = sv; 2145 event->se_timeout = timeout; 2146 2147 smb_llist_enter(&sv->sv_event_list, RW_WRITER); 2148 smb_llist_insert_tail(&sv->sv_event_list, event); 2149 smb_llist_exit(&sv->sv_event_list); 2150 2151 return (event); 2152 } 2153 2154 void 2155 smb_event_destroy(smb_event_t *event) 2156 { 2157 smb_server_t *sv; 2158 2159 if (event == NULL) 2160 return; 2161 2162 SMB_EVENT_VALID(event); 2163 ASSERT(event->se_waittime == 0); 2164 sv = event->se_server; 2165 SMB_SERVER_VALID(sv); 2166 2167 smb_llist_enter(&sv->sv_event_list, RW_WRITER); 2168 smb_llist_remove(&sv->sv_event_list, event); 2169 smb_llist_exit(&sv->sv_event_list); 2170 2171 event->se_magic = (uint32_t)~SMB_EVENT_MAGIC; 2172 cv_destroy(&event->se_cv); 2173 mutex_destroy(&event->se_mutex); 2174 2175 kmem_cache_free(smb_cache_event, event); 2176 } 2177 2178 /* 2179 * Get the txid for the specified event. 2180 */ 2181 uint32_t 2182 smb_event_txid(smb_event_t *event) 2183 { 2184 if (event != NULL) { 2185 SMB_EVENT_VALID(event); 2186 return (event->se_txid); 2187 } 2188 2189 cmn_err(CE_NOTE, "smb_event_txid failed"); 2190 return ((uint32_t)-1); 2191 } 2192 2193 /* 2194 * Wait for event notification. 2195 */ 2196 int 2197 smb_event_wait(smb_event_t *event) 2198 { 2199 int seconds = 1; 2200 int ticks; 2201 int err; 2202 2203 if (event == NULL) 2204 return (EINVAL); 2205 2206 SMB_EVENT_VALID(event); 2207 2208 mutex_enter(&event->se_mutex); 2209 event->se_waittime = 1; 2210 event->se_errno = 0; 2211 2212 while (!(event->se_notified)) { 2213 if (smb_event_debug && ((event->se_waittime % 30) == 0)) 2214 cmn_err(CE_NOTE, "smb_event_wait[%d] (%d sec)", 2215 event->se_txid, event->se_waittime); 2216 2217 if (event->se_errno != 0) 2218 break; 2219 2220 if (event->se_waittime > event->se_timeout) { 2221 event->se_errno = ETIME; 2222 break; 2223 } 2224 2225 ticks = SEC_TO_TICK(seconds); 2226 (void) cv_reltimedwait(&event->se_cv, 2227 &event->se_mutex, (clock_t)ticks, TR_CLOCK_TICK); 2228 ++event->se_waittime; 2229 } 2230 2231 err = event->se_errno; 2232 event->se_waittime = 0; 2233 event->se_notified = B_FALSE; 2234 cv_signal(&event->se_cv); 2235 mutex_exit(&event->se_mutex); 2236 return (err); 2237 } 2238 2239 /* 2240 * If txid is non-zero, cancel the specified event. 2241 * Otherwise, cancel all events. 2242 */ 2243 static void 2244 smb_event_cancel(smb_server_t *sv, uint32_t txid) 2245 { 2246 smb_event_t *event; 2247 smb_llist_t *event_list; 2248 2249 SMB_SERVER_VALID(sv); 2250 2251 event_list = &sv->sv_event_list; 2252 smb_llist_enter(event_list, RW_WRITER); 2253 2254 event = smb_llist_head(event_list); 2255 while (event) { 2256 SMB_EVENT_VALID(event); 2257 2258 if (txid == 0 || event->se_txid == txid) { 2259 mutex_enter(&event->se_mutex); 2260 event->se_errno = ECANCELED; 2261 event->se_notified = B_TRUE; 2262 cv_signal(&event->se_cv); 2263 mutex_exit(&event->se_mutex); 2264 2265 if (txid != 0) 2266 break; 2267 } 2268 2269 event = smb_llist_next(event_list, event); 2270 } 2271 2272 smb_llist_exit(event_list); 2273 } 2274 2275 /* 2276 * If txid is non-zero, notify the specified event. 2277 * Otherwise, notify all events. 2278 */ 2279 void 2280 smb_event_notify(smb_server_t *sv, uint32_t txid) 2281 { 2282 smb_event_t *event; 2283 smb_llist_t *event_list; 2284 2285 SMB_SERVER_VALID(sv); 2286 2287 event_list = &sv->sv_event_list; 2288 smb_llist_enter(event_list, RW_READER); 2289 2290 event = smb_llist_head(event_list); 2291 while (event) { 2292 SMB_EVENT_VALID(event); 2293 2294 if (txid == 0 || event->se_txid == txid) { 2295 mutex_enter(&event->se_mutex); 2296 event->se_notified = B_TRUE; 2297 cv_signal(&event->se_cv); 2298 mutex_exit(&event->se_mutex); 2299 2300 if (txid != 0) 2301 break; 2302 } 2303 2304 event = smb_llist_next(event_list, event); 2305 } 2306 2307 smb_llist_exit(event_list); 2308 } 2309 2310 /* 2311 * Allocate a new transaction id (txid). 2312 * 2313 * 0 or -1 are not assigned because they are used to detect invalid 2314 * conditions or to indicate all open id's. 2315 */ 2316 static uint32_t 2317 smb_event_alloc_txid(void) 2318 { 2319 static kmutex_t txmutex; 2320 static uint32_t txid; 2321 uint32_t txid_ret; 2322 2323 mutex_enter(&txmutex); 2324 2325 if (txid == 0) 2326 txid = ddi_get_lbolt() << 11; 2327 2328 do { 2329 ++txid; 2330 } while (txid == 0 || txid == (uint32_t)-1); 2331 2332 txid_ret = txid; 2333 mutex_exit(&txmutex); 2334 2335 return (txid_ret); 2336 } 2337 2338 /* 2339 * Called by the ioctl to find the corresponding 2340 * spooldoc node. removes node on success 2341 * 2342 * Return values 2343 * rc 2344 * B_FALSE - not found 2345 * B_TRUE - found 2346 * 2347 */ 2348 2349 static boolean_t 2350 smb_spool_lookup_doc_byfid(smb_server_t *sv, uint16_t fid, 2351 smb_kspooldoc_t *spdoc) 2352 { 2353 smb_kspooldoc_t *sp; 2354 smb_llist_t *splist; 2355 2356 splist = &sv->sp_info.sp_list; 2357 smb_llist_enter(splist, RW_WRITER); 2358 sp = smb_llist_head(splist); 2359 while (sp != NULL) { 2360 /* 2361 * check for a matching fid 2362 */ 2363 if (sp->sd_fid == fid) { 2364 *spdoc = *sp; 2365 smb_llist_remove(splist, sp); 2366 smb_llist_exit(splist); 2367 kmem_free(sp, sizeof (smb_kspooldoc_t)); 2368 return (B_TRUE); 2369 } 2370 sp = smb_llist_next(splist, sp); 2371 } 2372 cmn_err(CE_WARN, "smb_spool_lookup_user_byfid: no fid:%d", fid); 2373 smb_llist_exit(splist); 2374 return (B_FALSE); 2375 } 2376 2377 /* 2378 * Adds the spool fid to a linked list to be used 2379 * as a search key in the spooldoc queue 2380 * 2381 * Return values 2382 * rc non-zero error 2383 * rc zero success 2384 * 2385 */ 2386 2387 void 2388 smb_spool_add_fid(smb_server_t *sv, uint16_t fid) 2389 { 2390 smb_llist_t *fidlist; 2391 smb_spoolfid_t *sf; 2392 2393 if (sv->sv_cfg.skc_print_enable == 0) 2394 return; 2395 2396 sf = kmem_zalloc(sizeof (smb_spoolfid_t), KM_SLEEP); 2397 fidlist = &sv->sp_info.sp_fidlist; 2398 smb_llist_enter(fidlist, RW_WRITER); 2399 sf->sf_fid = fid; 2400 smb_llist_insert_tail(fidlist, sf); 2401 smb_llist_exit(fidlist); 2402 cv_broadcast(&sv->sp_info.sp_cv); 2403 } 2404 2405 /* 2406 * Called by the ioctl to get and remove the head of the fid list 2407 * 2408 * Return values 2409 * int fd 2410 * greater than 0 success 2411 * 0 - error 2412 * 2413 */ 2414 2415 static uint16_t 2416 smb_spool_get_fid(smb_server_t *sv) 2417 { 2418 smb_spoolfid_t *spfid; 2419 smb_llist_t *splist; 2420 uint16_t fid; 2421 2422 splist = &sv->sp_info.sp_fidlist; 2423 smb_llist_enter(splist, RW_WRITER); 2424 spfid = smb_llist_head(splist); 2425 if (spfid != NULL) { 2426 fid = spfid->sf_fid; 2427 smb_llist_remove(&sv->sp_info.sp_fidlist, spfid); 2428 kmem_free(spfid, sizeof (smb_spoolfid_t)); 2429 } else { 2430 fid = 0; 2431 } 2432 smb_llist_exit(splist); 2433 return (fid); 2434 } 2435 2436 /* 2437 * Adds the spooldoc to the tail of the spooldoc list 2438 * 2439 * Return values 2440 * rc non-zero error 2441 * rc zero success 2442 */ 2443 int 2444 smb_spool_add_doc(smb_tree_t *tree, smb_kspooldoc_t *sp) 2445 { 2446 smb_llist_t *splist; 2447 smb_server_t *sv = tree->t_server; 2448 int rc = 0; 2449 2450 splist = &sv->sp_info.sp_list; 2451 smb_llist_enter(splist, RW_WRITER); 2452 sp->sd_spool_num = atomic_inc_32_nv(&sv->sp_info.sp_cnt); 2453 smb_llist_insert_tail(splist, sp); 2454 smb_llist_exit(splist); 2455 2456 return (rc); 2457 } 2458 2459 /* 2460 * smb_server_create_session 2461 */ 2462 static void 2463 smb_server_create_session(smb_listener_daemon_t *ld, ksocket_t s_so) 2464 { 2465 smb_server_t *sv = ld->ld_sv; 2466 smb_session_t *session; 2467 smb_llist_t *sl; 2468 taskqid_t tqid; 2469 clock_t now; 2470 2471 session = smb_session_create(s_so, ld->ld_port, sv, 2472 ld->ld_family); 2473 2474 if (session == NULL) { 2475 /* This should be rare (create sleeps) */ 2476 smb_soshutdown(s_so); 2477 smb_sodestroy(s_so); 2478 cmn_err(CE_WARN, "SMB Session: alloc failed"); 2479 return; 2480 } 2481 2482 sl = &sv->sv_session_list; 2483 smb_llist_enter(sl, RW_WRITER); 2484 if (smb_llist_get_count(sl) >= sv->sv_cfg.skc_maxconnections) { 2485 /* 2486 * New session not in sv_session_list, so we can just 2487 * delete it directly. 2488 */ 2489 smb_llist_exit(sl); 2490 DTRACE_PROBE1(maxconn, smb_session_t *, session); 2491 smb_soshutdown(session->sock); 2492 smb_session_delete(session); 2493 goto logmaxconn; 2494 } 2495 smb_llist_insert_tail(sl, session); 2496 smb_llist_exit(sl); 2497 2498 /* 2499 * These taskq entries must run independently of one another, 2500 * so TQ_NOQUEUE. TQ_SLEEP (==0) just for clarity. 2501 */ 2502 tqid = taskq_dispatch(sv->sv_receiver_pool, 2503 smb_server_receiver, session, TQ_NOQUEUE | TQ_SLEEP); 2504 if (tqid == TASKQID_INVALID) { 2505 /* 2506 * We never entered smb_server_receiver() 2507 * so need to do it's return cleanup 2508 */ 2509 DTRACE_PROBE1(maxconn, smb_session_t *, session); 2510 smb_session_disconnect(session); 2511 smb_session_logoff(session); 2512 smb_server_destroy_session(session); 2513 goto logmaxconn; 2514 } 2515 2516 /* Success */ 2517 session->s_receiver_tqid = tqid; 2518 return; 2519 2520 logmaxconn: 2521 /* 2522 * If we hit max_connections, log something so an admin 2523 * can find out why new connections are failing, but 2524 * log this no more than once a minute. 2525 */ 2526 now = ddi_get_lbolt(); 2527 if (now > ld->ld_quiet) { 2528 ld->ld_quiet = now + SEC_TO_TICK(60); 2529 cmn_err(CE_WARN, "SMB can't create session: " 2530 "Would exceed max_connections."); 2531 } 2532 } 2533 2534 static void 2535 smb_server_destroy_session(smb_session_t *session) 2536 { 2537 smb_server_t *sv; 2538 smb_llist_t *ll; 2539 uint32_t count; 2540 2541 ASSERT(session->s_server != NULL); 2542 sv = session->s_server; 2543 ll = &sv->sv_session_list; 2544 2545 smb_llist_flush(&session->s_tree_list); 2546 smb_llist_flush(&session->s_user_list); 2547 2548 /* 2549 * The user and tree lists should be empty now. 2550 */ 2551 #ifdef DEBUG 2552 if (session->s_user_list.ll_count != 0) { 2553 cmn_err(CE_WARN, "user list not empty?"); 2554 debug_enter("s_user_list"); 2555 } 2556 if (session->s_tree_list.ll_count != 0) { 2557 cmn_err(CE_WARN, "tree list not empty?"); 2558 debug_enter("s_tree_list"); 2559 } 2560 #endif 2561 2562 smb_llist_enter(ll, RW_WRITER); 2563 smb_llist_remove(ll, session); 2564 count = ll->ll_count; 2565 smb_llist_exit(ll); 2566 2567 smb_session_delete(session); 2568 if (count == 0) { 2569 /* See smb_server_shutdown */ 2570 cv_signal(&sv->sv_cv); 2571 } 2572 } 2573