1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Copyright (C) 2016 Namjae Jeon <linkinjeon@kernel.org> 4 * Copyright (C) 2018 Samsung Electronics Co., Ltd. 5 */ 6 7 #include <linux/moduleparam.h> 8 9 #include "glob.h" 10 #include "oplock.h" 11 12 #include "smb_common.h" 13 #include "smbstatus.h" 14 #include "connection.h" 15 #include "mgmt/user_session.h" 16 #include "mgmt/share_config.h" 17 #include "mgmt/tree_connect.h" 18 19 static LIST_HEAD(lease_table_list); 20 static DEFINE_RWLOCK(lease_list_lock); 21 22 /** 23 * alloc_opinfo() - allocate a new opinfo object for oplock info 24 * @work: smb work 25 * @id: fid of open file 26 * @Tid: tree id of connection 27 * 28 * Return: allocated opinfo object on success, otherwise NULL 29 */ 30 static struct oplock_info *alloc_opinfo(struct ksmbd_work *work, 31 u64 id, __u16 Tid) 32 { 33 struct ksmbd_conn *conn = work->conn; 34 struct ksmbd_session *sess = work->sess; 35 struct oplock_info *opinfo; 36 37 opinfo = kzalloc(sizeof(struct oplock_info), GFP_KERNEL); 38 if (!opinfo) 39 return NULL; 40 41 opinfo->sess = sess; 42 opinfo->conn = conn; 43 opinfo->level = SMB2_OPLOCK_LEVEL_NONE; 44 opinfo->op_state = OPLOCK_STATE_NONE; 45 opinfo->pending_break = 0; 46 opinfo->fid = id; 47 opinfo->Tid = Tid; 48 INIT_LIST_HEAD(&opinfo->op_entry); 49 INIT_LIST_HEAD(&opinfo->interim_list); 50 init_waitqueue_head(&opinfo->oplock_q); 51 init_waitqueue_head(&opinfo->oplock_brk); 52 atomic_set(&opinfo->refcount, 1); 53 atomic_set(&opinfo->breaking_cnt, 0); 54 55 return opinfo; 56 } 57 58 static void lease_add_list(struct oplock_info *opinfo) 59 { 60 struct lease_table *lb = opinfo->o_lease->l_lb; 61 62 spin_lock(&lb->lb_lock); 63 list_add_rcu(&opinfo->lease_entry, &lb->lease_list); 64 spin_unlock(&lb->lb_lock); 65 } 66 67 static void lease_del_list(struct oplock_info *opinfo) 68 { 69 struct lease_table *lb = opinfo->o_lease->l_lb; 70 71 if (!lb) 72 return; 73 74 spin_lock(&lb->lb_lock); 75 if (list_empty(&opinfo->lease_entry)) { 76 spin_unlock(&lb->lb_lock); 77 return; 78 } 79 80 list_del_init(&opinfo->lease_entry); 81 opinfo->o_lease->l_lb = NULL; 82 spin_unlock(&lb->lb_lock); 83 } 84 85 static void lb_add(struct lease_table *lb) 86 { 87 write_lock(&lease_list_lock); 88 list_add(&lb->l_entry, &lease_table_list); 89 write_unlock(&lease_list_lock); 90 } 91 92 static int alloc_lease(struct oplock_info *opinfo, struct lease_ctx_info *lctx) 93 { 94 struct lease *lease; 95 96 lease = kmalloc(sizeof(struct lease), GFP_KERNEL); 97 if (!lease) 98 return -ENOMEM; 99 100 memcpy(lease->lease_key, lctx->lease_key, SMB2_LEASE_KEY_SIZE); 101 lease->state = lctx->req_state; 102 lease->new_state = 0; 103 lease->flags = lctx->flags; 104 lease->duration = lctx->duration; 105 lease->is_dir = lctx->is_dir; 106 memcpy(lease->parent_lease_key, lctx->parent_lease_key, SMB2_LEASE_KEY_SIZE); 107 lease->version = lctx->version; 108 lease->epoch = le16_to_cpu(lctx->epoch) + 1; 109 INIT_LIST_HEAD(&opinfo->lease_entry); 110 opinfo->o_lease = lease; 111 112 return 0; 113 } 114 115 static void free_lease(struct oplock_info *opinfo) 116 { 117 struct lease *lease; 118 119 lease = opinfo->o_lease; 120 kfree(lease); 121 } 122 123 static void free_opinfo(struct oplock_info *opinfo) 124 { 125 if (opinfo->is_lease) 126 free_lease(opinfo); 127 kfree(opinfo); 128 } 129 130 static inline void opinfo_free_rcu(struct rcu_head *rcu_head) 131 { 132 struct oplock_info *opinfo; 133 134 opinfo = container_of(rcu_head, struct oplock_info, rcu_head); 135 free_opinfo(opinfo); 136 } 137 138 struct oplock_info *opinfo_get(struct ksmbd_file *fp) 139 { 140 struct oplock_info *opinfo; 141 142 rcu_read_lock(); 143 opinfo = rcu_dereference(fp->f_opinfo); 144 if (opinfo && !atomic_inc_not_zero(&opinfo->refcount)) 145 opinfo = NULL; 146 rcu_read_unlock(); 147 148 return opinfo; 149 } 150 151 static struct oplock_info *opinfo_get_list(struct ksmbd_inode *ci) 152 { 153 struct oplock_info *opinfo; 154 155 if (list_empty(&ci->m_op_list)) 156 return NULL; 157 158 rcu_read_lock(); 159 opinfo = list_first_or_null_rcu(&ci->m_op_list, struct oplock_info, 160 op_entry); 161 if (opinfo) { 162 if (opinfo->conn == NULL || 163 !atomic_inc_not_zero(&opinfo->refcount)) 164 opinfo = NULL; 165 else { 166 atomic_inc(&opinfo->conn->r_count); 167 if (ksmbd_conn_releasing(opinfo->conn)) { 168 atomic_dec(&opinfo->conn->r_count); 169 atomic_dec(&opinfo->refcount); 170 opinfo = NULL; 171 } 172 } 173 } 174 175 rcu_read_unlock(); 176 177 return opinfo; 178 } 179 180 static void opinfo_conn_put(struct oplock_info *opinfo) 181 { 182 struct ksmbd_conn *conn; 183 184 if (!opinfo) 185 return; 186 187 conn = opinfo->conn; 188 /* 189 * Checking waitqueue to dropping pending requests on 190 * disconnection. waitqueue_active is safe because it 191 * uses atomic operation for condition. 192 */ 193 if (!atomic_dec_return(&conn->r_count) && waitqueue_active(&conn->r_count_q)) 194 wake_up(&conn->r_count_q); 195 opinfo_put(opinfo); 196 } 197 198 void opinfo_put(struct oplock_info *opinfo) 199 { 200 if (!atomic_dec_and_test(&opinfo->refcount)) 201 return; 202 203 call_rcu(&opinfo->rcu_head, opinfo_free_rcu); 204 } 205 206 static void opinfo_add(struct oplock_info *opinfo) 207 { 208 struct ksmbd_inode *ci = opinfo->o_fp->f_ci; 209 210 down_write(&ci->m_lock); 211 list_add_rcu(&opinfo->op_entry, &ci->m_op_list); 212 up_write(&ci->m_lock); 213 } 214 215 static void opinfo_del(struct oplock_info *opinfo) 216 { 217 struct ksmbd_inode *ci = opinfo->o_fp->f_ci; 218 219 if (opinfo->is_lease) { 220 write_lock(&lease_list_lock); 221 lease_del_list(opinfo); 222 write_unlock(&lease_list_lock); 223 } 224 down_write(&ci->m_lock); 225 list_del_rcu(&opinfo->op_entry); 226 up_write(&ci->m_lock); 227 } 228 229 static unsigned long opinfo_count(struct ksmbd_file *fp) 230 { 231 if (ksmbd_stream_fd(fp)) 232 return atomic_read(&fp->f_ci->sop_count); 233 else 234 return atomic_read(&fp->f_ci->op_count); 235 } 236 237 static void opinfo_count_inc(struct ksmbd_file *fp) 238 { 239 if (ksmbd_stream_fd(fp)) 240 return atomic_inc(&fp->f_ci->sop_count); 241 else 242 return atomic_inc(&fp->f_ci->op_count); 243 } 244 245 static void opinfo_count_dec(struct ksmbd_file *fp) 246 { 247 if (ksmbd_stream_fd(fp)) 248 return atomic_dec(&fp->f_ci->sop_count); 249 else 250 return atomic_dec(&fp->f_ci->op_count); 251 } 252 253 /** 254 * opinfo_write_to_read() - convert a write oplock to read oplock 255 * @opinfo: current oplock info 256 * 257 * Return: 0 on success, otherwise -EINVAL 258 */ 259 int opinfo_write_to_read(struct oplock_info *opinfo) 260 { 261 struct lease *lease = opinfo->o_lease; 262 263 if (!(opinfo->level == SMB2_OPLOCK_LEVEL_BATCH || 264 opinfo->level == SMB2_OPLOCK_LEVEL_EXCLUSIVE)) { 265 pr_err("bad oplock(0x%x)\n", opinfo->level); 266 if (opinfo->is_lease) 267 pr_err("lease state(0x%x)\n", lease->state); 268 return -EINVAL; 269 } 270 opinfo->level = SMB2_OPLOCK_LEVEL_II; 271 272 if (opinfo->is_lease) 273 lease->state = lease->new_state; 274 return 0; 275 } 276 277 /** 278 * opinfo_read_handle_to_read() - convert a read/handle oplock to read oplock 279 * @opinfo: current oplock info 280 * 281 * Return: 0 on success, otherwise -EINVAL 282 */ 283 int opinfo_read_handle_to_read(struct oplock_info *opinfo) 284 { 285 struct lease *lease = opinfo->o_lease; 286 287 lease->state = lease->new_state; 288 opinfo->level = SMB2_OPLOCK_LEVEL_II; 289 return 0; 290 } 291 292 /** 293 * opinfo_write_to_none() - convert a write oplock to none 294 * @opinfo: current oplock info 295 * 296 * Return: 0 on success, otherwise -EINVAL 297 */ 298 int opinfo_write_to_none(struct oplock_info *opinfo) 299 { 300 struct lease *lease = opinfo->o_lease; 301 302 if (!(opinfo->level == SMB2_OPLOCK_LEVEL_BATCH || 303 opinfo->level == SMB2_OPLOCK_LEVEL_EXCLUSIVE)) { 304 pr_err("bad oplock(0x%x)\n", opinfo->level); 305 if (opinfo->is_lease) 306 pr_err("lease state(0x%x)\n", lease->state); 307 return -EINVAL; 308 } 309 opinfo->level = SMB2_OPLOCK_LEVEL_NONE; 310 if (opinfo->is_lease) 311 lease->state = lease->new_state; 312 return 0; 313 } 314 315 /** 316 * opinfo_read_to_none() - convert a write read to none 317 * @opinfo: current oplock info 318 * 319 * Return: 0 on success, otherwise -EINVAL 320 */ 321 int opinfo_read_to_none(struct oplock_info *opinfo) 322 { 323 struct lease *lease = opinfo->o_lease; 324 325 if (opinfo->level != SMB2_OPLOCK_LEVEL_II) { 326 pr_err("bad oplock(0x%x)\n", opinfo->level); 327 if (opinfo->is_lease) 328 pr_err("lease state(0x%x)\n", lease->state); 329 return -EINVAL; 330 } 331 opinfo->level = SMB2_OPLOCK_LEVEL_NONE; 332 if (opinfo->is_lease) 333 lease->state = lease->new_state; 334 return 0; 335 } 336 337 /** 338 * lease_read_to_write() - upgrade lease state from read to write 339 * @opinfo: current lease info 340 * 341 * Return: 0 on success, otherwise -EINVAL 342 */ 343 int lease_read_to_write(struct oplock_info *opinfo) 344 { 345 struct lease *lease = opinfo->o_lease; 346 347 if (!(lease->state & SMB2_LEASE_READ_CACHING_LE)) { 348 ksmbd_debug(OPLOCK, "bad lease state(0x%x)\n", lease->state); 349 return -EINVAL; 350 } 351 352 lease->new_state = SMB2_LEASE_NONE_LE; 353 lease->state |= SMB2_LEASE_WRITE_CACHING_LE; 354 if (lease->state & SMB2_LEASE_HANDLE_CACHING_LE) 355 opinfo->level = SMB2_OPLOCK_LEVEL_BATCH; 356 else 357 opinfo->level = SMB2_OPLOCK_LEVEL_EXCLUSIVE; 358 return 0; 359 } 360 361 /** 362 * lease_none_upgrade() - upgrade lease state from none 363 * @opinfo: current lease info 364 * @new_state: new lease state 365 * 366 * Return: 0 on success, otherwise -EINVAL 367 */ 368 static int lease_none_upgrade(struct oplock_info *opinfo, __le32 new_state) 369 { 370 struct lease *lease = opinfo->o_lease; 371 372 if (!(lease->state == SMB2_LEASE_NONE_LE)) { 373 ksmbd_debug(OPLOCK, "bad lease state(0x%x)\n", lease->state); 374 return -EINVAL; 375 } 376 377 lease->new_state = SMB2_LEASE_NONE_LE; 378 lease->state = new_state; 379 if (lease->state & SMB2_LEASE_HANDLE_CACHING_LE) 380 if (lease->state & SMB2_LEASE_WRITE_CACHING_LE) 381 opinfo->level = SMB2_OPLOCK_LEVEL_BATCH; 382 else 383 opinfo->level = SMB2_OPLOCK_LEVEL_II; 384 else if (lease->state & SMB2_LEASE_WRITE_CACHING_LE) 385 opinfo->level = SMB2_OPLOCK_LEVEL_EXCLUSIVE; 386 else if (lease->state & SMB2_LEASE_READ_CACHING_LE) 387 opinfo->level = SMB2_OPLOCK_LEVEL_II; 388 389 return 0; 390 } 391 392 /** 393 * close_id_del_oplock() - release oplock object at file close time 394 * @fp: ksmbd file pointer 395 */ 396 void close_id_del_oplock(struct ksmbd_file *fp) 397 { 398 struct oplock_info *opinfo; 399 400 if (fp->reserve_lease_break) 401 smb_lazy_parent_lease_break_close(fp); 402 403 opinfo = opinfo_get(fp); 404 if (!opinfo) 405 return; 406 407 opinfo_del(opinfo); 408 409 rcu_assign_pointer(fp->f_opinfo, NULL); 410 if (opinfo->op_state == OPLOCK_ACK_WAIT) { 411 opinfo->op_state = OPLOCK_CLOSING; 412 wake_up_interruptible_all(&opinfo->oplock_q); 413 if (opinfo->is_lease) { 414 atomic_set(&opinfo->breaking_cnt, 0); 415 wake_up_interruptible_all(&opinfo->oplock_brk); 416 } 417 } 418 419 opinfo_count_dec(fp); 420 atomic_dec(&opinfo->refcount); 421 opinfo_put(opinfo); 422 } 423 424 /** 425 * grant_write_oplock() - grant exclusive/batch oplock or write lease 426 * @opinfo_new: new oplock info object 427 * @req_oplock: request oplock 428 * @lctx: lease context information 429 * 430 * Return: 0 431 */ 432 static void grant_write_oplock(struct oplock_info *opinfo_new, int req_oplock, 433 struct lease_ctx_info *lctx) 434 { 435 struct lease *lease = opinfo_new->o_lease; 436 437 if (req_oplock == SMB2_OPLOCK_LEVEL_BATCH) 438 opinfo_new->level = SMB2_OPLOCK_LEVEL_BATCH; 439 else 440 opinfo_new->level = SMB2_OPLOCK_LEVEL_EXCLUSIVE; 441 442 if (lctx) { 443 lease->state = lctx->req_state; 444 memcpy(lease->lease_key, lctx->lease_key, SMB2_LEASE_KEY_SIZE); 445 } 446 } 447 448 /** 449 * grant_read_oplock() - grant level2 oplock or read lease 450 * @opinfo_new: new oplock info object 451 * @lctx: lease context information 452 * 453 * Return: 0 454 */ 455 static void grant_read_oplock(struct oplock_info *opinfo_new, 456 struct lease_ctx_info *lctx) 457 { 458 struct lease *lease = opinfo_new->o_lease; 459 460 opinfo_new->level = SMB2_OPLOCK_LEVEL_II; 461 462 if (lctx) { 463 lease->state = SMB2_LEASE_READ_CACHING_LE; 464 if (lctx->req_state & SMB2_LEASE_HANDLE_CACHING_LE) 465 lease->state |= SMB2_LEASE_HANDLE_CACHING_LE; 466 memcpy(lease->lease_key, lctx->lease_key, SMB2_LEASE_KEY_SIZE); 467 } 468 } 469 470 /** 471 * grant_none_oplock() - grant none oplock or none lease 472 * @opinfo_new: new oplock info object 473 * @lctx: lease context information 474 * 475 * Return: 0 476 */ 477 static void grant_none_oplock(struct oplock_info *opinfo_new, 478 struct lease_ctx_info *lctx) 479 { 480 struct lease *lease = opinfo_new->o_lease; 481 482 opinfo_new->level = SMB2_OPLOCK_LEVEL_NONE; 483 484 if (lctx) { 485 lease->state = 0; 486 memcpy(lease->lease_key, lctx->lease_key, SMB2_LEASE_KEY_SIZE); 487 } 488 } 489 490 static inline int compare_guid_key(struct oplock_info *opinfo, 491 const char *guid1, const char *key1) 492 { 493 const char *guid2, *key2; 494 495 guid2 = opinfo->conn->ClientGUID; 496 key2 = opinfo->o_lease->lease_key; 497 if (!memcmp(guid1, guid2, SMB2_CLIENT_GUID_SIZE) && 498 !memcmp(key1, key2, SMB2_LEASE_KEY_SIZE)) 499 return 1; 500 501 return 0; 502 } 503 504 /** 505 * same_client_has_lease() - check whether current lease request is 506 * from lease owner of file 507 * @ci: master file pointer 508 * @client_guid: Client GUID 509 * @lctx: lease context information 510 * 511 * Return: oplock(lease) object on success, otherwise NULL 512 */ 513 static struct oplock_info *same_client_has_lease(struct ksmbd_inode *ci, 514 char *client_guid, 515 struct lease_ctx_info *lctx) 516 { 517 int ret; 518 struct lease *lease; 519 struct oplock_info *opinfo; 520 struct oplock_info *m_opinfo = NULL; 521 522 if (!lctx) 523 return NULL; 524 525 /* 526 * Compare lease key and client_guid to know request from same owner 527 * of same client 528 */ 529 down_read(&ci->m_lock); 530 list_for_each_entry(opinfo, &ci->m_op_list, op_entry) { 531 if (!opinfo->is_lease || !opinfo->conn) 532 continue; 533 lease = opinfo->o_lease; 534 535 ret = compare_guid_key(opinfo, client_guid, lctx->lease_key); 536 if (ret) { 537 m_opinfo = opinfo; 538 /* skip upgrading lease about breaking lease */ 539 if (atomic_read(&opinfo->breaking_cnt)) 540 continue; 541 542 /* upgrading lease */ 543 if ((atomic_read(&ci->op_count) + 544 atomic_read(&ci->sop_count)) == 1) { 545 if (lease->state != SMB2_LEASE_NONE_LE && 546 lease->state == (lctx->req_state & lease->state)) { 547 lease->epoch++; 548 lease->state |= lctx->req_state; 549 if (lctx->req_state & 550 SMB2_LEASE_WRITE_CACHING_LE) 551 lease_read_to_write(opinfo); 552 553 } 554 } else if ((atomic_read(&ci->op_count) + 555 atomic_read(&ci->sop_count)) > 1) { 556 if (lctx->req_state == 557 (SMB2_LEASE_READ_CACHING_LE | 558 SMB2_LEASE_HANDLE_CACHING_LE)) { 559 lease->epoch++; 560 lease->state = lctx->req_state; 561 } 562 } 563 564 if (lctx->req_state && lease->state == 565 SMB2_LEASE_NONE_LE) { 566 lease->epoch++; 567 lease_none_upgrade(opinfo, lctx->req_state); 568 } 569 } 570 } 571 up_read(&ci->m_lock); 572 573 return m_opinfo; 574 } 575 576 static void wait_for_break_ack(struct oplock_info *opinfo) 577 { 578 int rc = 0; 579 580 rc = wait_event_interruptible_timeout(opinfo->oplock_q, 581 opinfo->op_state == OPLOCK_STATE_NONE || 582 opinfo->op_state == OPLOCK_CLOSING, 583 OPLOCK_WAIT_TIME); 584 585 /* is this a timeout ? */ 586 if (!rc) { 587 if (opinfo->is_lease) 588 opinfo->o_lease->state = SMB2_LEASE_NONE_LE; 589 opinfo->level = SMB2_OPLOCK_LEVEL_NONE; 590 opinfo->op_state = OPLOCK_STATE_NONE; 591 } 592 } 593 594 static void wake_up_oplock_break(struct oplock_info *opinfo) 595 { 596 clear_bit_unlock(0, &opinfo->pending_break); 597 /* memory barrier is needed for wake_up_bit() */ 598 smp_mb__after_atomic(); 599 wake_up_bit(&opinfo->pending_break, 0); 600 } 601 602 static int oplock_break_pending(struct oplock_info *opinfo, int req_op_level) 603 { 604 while (test_and_set_bit(0, &opinfo->pending_break)) { 605 wait_on_bit(&opinfo->pending_break, 0, TASK_UNINTERRUPTIBLE); 606 607 /* Not immediately break to none. */ 608 opinfo->open_trunc = 0; 609 610 if (opinfo->op_state == OPLOCK_CLOSING) 611 return -ENOENT; 612 else if (opinfo->level <= req_op_level) { 613 if (opinfo->is_lease && 614 opinfo->o_lease->state != 615 (SMB2_LEASE_HANDLE_CACHING_LE | 616 SMB2_LEASE_READ_CACHING_LE)) 617 return 1; 618 } 619 } 620 621 if (opinfo->level <= req_op_level) { 622 if (opinfo->is_lease && 623 opinfo->o_lease->state != 624 (SMB2_LEASE_HANDLE_CACHING_LE | 625 SMB2_LEASE_READ_CACHING_LE)) { 626 wake_up_oplock_break(opinfo); 627 return 1; 628 } 629 } 630 return 0; 631 } 632 633 /** 634 * __smb2_oplock_break_noti() - send smb2 oplock break cmd from conn 635 * to client 636 * @wk: smb work object 637 * 638 * There are two ways this function can be called. 1- while file open we break 639 * from exclusive/batch lock to levelII oplock and 2- while file write/truncate 640 * we break from levelII oplock no oplock. 641 * work->request_buf contains oplock_info. 642 */ 643 static void __smb2_oplock_break_noti(struct work_struct *wk) 644 { 645 struct smb2_oplock_break *rsp = NULL; 646 struct ksmbd_work *work = container_of(wk, struct ksmbd_work, work); 647 struct oplock_break_info *br_info = work->request_buf; 648 struct smb2_hdr *rsp_hdr; 649 struct ksmbd_file *fp; 650 651 fp = ksmbd_lookup_global_fd(br_info->fid); 652 if (!fp) 653 goto out; 654 655 if (allocate_interim_rsp_buf(work)) { 656 pr_err("smb2_allocate_rsp_buf failed! "); 657 ksmbd_fd_put(work, fp); 658 goto out; 659 } 660 661 rsp_hdr = smb2_get_msg(work->response_buf); 662 memset(rsp_hdr, 0, sizeof(struct smb2_hdr) + 2); 663 rsp_hdr->ProtocolId = SMB2_PROTO_NUMBER; 664 rsp_hdr->StructureSize = SMB2_HEADER_STRUCTURE_SIZE; 665 rsp_hdr->CreditRequest = cpu_to_le16(0); 666 rsp_hdr->Command = SMB2_OPLOCK_BREAK; 667 rsp_hdr->Flags = (SMB2_FLAGS_SERVER_TO_REDIR); 668 rsp_hdr->NextCommand = 0; 669 rsp_hdr->MessageId = cpu_to_le64(-1); 670 rsp_hdr->Id.SyncId.ProcessId = 0; 671 rsp_hdr->Id.SyncId.TreeId = 0; 672 rsp_hdr->SessionId = 0; 673 memset(rsp_hdr->Signature, 0, 16); 674 675 rsp = smb2_get_msg(work->response_buf); 676 677 rsp->StructureSize = cpu_to_le16(24); 678 if (!br_info->open_trunc && 679 (br_info->level == SMB2_OPLOCK_LEVEL_BATCH || 680 br_info->level == SMB2_OPLOCK_LEVEL_EXCLUSIVE)) 681 rsp->OplockLevel = SMB2_OPLOCK_LEVEL_II; 682 else 683 rsp->OplockLevel = SMB2_OPLOCK_LEVEL_NONE; 684 rsp->Reserved = 0; 685 rsp->Reserved2 = 0; 686 rsp->PersistentFid = fp->persistent_id; 687 rsp->VolatileFid = fp->volatile_id; 688 689 ksmbd_fd_put(work, fp); 690 if (ksmbd_iov_pin_rsp(work, (void *)rsp, 691 sizeof(struct smb2_oplock_break))) 692 goto out; 693 694 ksmbd_debug(OPLOCK, 695 "sending oplock break v_id %llu p_id = %llu lock level = %d\n", 696 rsp->VolatileFid, rsp->PersistentFid, rsp->OplockLevel); 697 698 ksmbd_conn_write(work); 699 700 out: 701 ksmbd_free_work_struct(work); 702 } 703 704 /** 705 * smb2_oplock_break_noti() - send smb2 exclusive/batch to level2 oplock 706 * break command from server to client 707 * @opinfo: oplock info object 708 * 709 * Return: 0 on success, otherwise error 710 */ 711 static int smb2_oplock_break_noti(struct oplock_info *opinfo) 712 { 713 struct ksmbd_conn *conn = opinfo->conn; 714 struct oplock_break_info *br_info; 715 int ret = 0; 716 struct ksmbd_work *work = ksmbd_alloc_work_struct(); 717 718 if (!work) 719 return -ENOMEM; 720 721 br_info = kmalloc(sizeof(struct oplock_break_info), GFP_KERNEL); 722 if (!br_info) { 723 ksmbd_free_work_struct(work); 724 return -ENOMEM; 725 } 726 727 br_info->level = opinfo->level; 728 br_info->fid = opinfo->fid; 729 br_info->open_trunc = opinfo->open_trunc; 730 731 work->request_buf = (char *)br_info; 732 work->conn = conn; 733 work->sess = opinfo->sess; 734 735 if (opinfo->op_state == OPLOCK_ACK_WAIT) { 736 INIT_WORK(&work->work, __smb2_oplock_break_noti); 737 ksmbd_queue_work(work); 738 739 wait_for_break_ack(opinfo); 740 } else { 741 __smb2_oplock_break_noti(&work->work); 742 if (opinfo->level == SMB2_OPLOCK_LEVEL_II) 743 opinfo->level = SMB2_OPLOCK_LEVEL_NONE; 744 } 745 return ret; 746 } 747 748 /** 749 * __smb2_lease_break_noti() - send lease break command from server 750 * to client 751 * @wk: smb work object 752 */ 753 static void __smb2_lease_break_noti(struct work_struct *wk) 754 { 755 struct smb2_lease_break *rsp = NULL; 756 struct ksmbd_work *work = container_of(wk, struct ksmbd_work, work); 757 struct lease_break_info *br_info = work->request_buf; 758 struct smb2_hdr *rsp_hdr; 759 760 if (allocate_interim_rsp_buf(work)) { 761 ksmbd_debug(OPLOCK, "smb2_allocate_rsp_buf failed! "); 762 goto out; 763 } 764 765 rsp_hdr = smb2_get_msg(work->response_buf); 766 memset(rsp_hdr, 0, sizeof(struct smb2_hdr) + 2); 767 rsp_hdr->ProtocolId = SMB2_PROTO_NUMBER; 768 rsp_hdr->StructureSize = SMB2_HEADER_STRUCTURE_SIZE; 769 rsp_hdr->CreditRequest = cpu_to_le16(0); 770 rsp_hdr->Command = SMB2_OPLOCK_BREAK; 771 rsp_hdr->Flags = (SMB2_FLAGS_SERVER_TO_REDIR); 772 rsp_hdr->NextCommand = 0; 773 rsp_hdr->MessageId = cpu_to_le64(-1); 774 rsp_hdr->Id.SyncId.ProcessId = 0; 775 rsp_hdr->Id.SyncId.TreeId = 0; 776 rsp_hdr->SessionId = 0; 777 memset(rsp_hdr->Signature, 0, 16); 778 779 rsp = smb2_get_msg(work->response_buf); 780 rsp->StructureSize = cpu_to_le16(44); 781 rsp->Epoch = br_info->epoch; 782 rsp->Flags = 0; 783 784 if (br_info->curr_state & (SMB2_LEASE_WRITE_CACHING_LE | 785 SMB2_LEASE_HANDLE_CACHING_LE)) 786 rsp->Flags = SMB2_NOTIFY_BREAK_LEASE_FLAG_ACK_REQUIRED; 787 788 memcpy(rsp->LeaseKey, br_info->lease_key, SMB2_LEASE_KEY_SIZE); 789 rsp->CurrentLeaseState = br_info->curr_state; 790 rsp->NewLeaseState = br_info->new_state; 791 rsp->BreakReason = 0; 792 rsp->AccessMaskHint = 0; 793 rsp->ShareMaskHint = 0; 794 795 if (ksmbd_iov_pin_rsp(work, (void *)rsp, 796 sizeof(struct smb2_lease_break))) 797 goto out; 798 799 ksmbd_conn_write(work); 800 801 out: 802 ksmbd_free_work_struct(work); 803 } 804 805 /** 806 * smb2_lease_break_noti() - break lease when a new client request 807 * write lease 808 * @opinfo: conains lease state information 809 * 810 * Return: 0 on success, otherwise error 811 */ 812 static int smb2_lease_break_noti(struct oplock_info *opinfo) 813 { 814 struct ksmbd_conn *conn = opinfo->conn; 815 struct list_head *tmp, *t; 816 struct ksmbd_work *work; 817 struct lease_break_info *br_info; 818 struct lease *lease = opinfo->o_lease; 819 820 work = ksmbd_alloc_work_struct(); 821 if (!work) 822 return -ENOMEM; 823 824 br_info = kmalloc(sizeof(struct lease_break_info), GFP_KERNEL); 825 if (!br_info) { 826 ksmbd_free_work_struct(work); 827 return -ENOMEM; 828 } 829 830 br_info->curr_state = lease->state; 831 br_info->new_state = lease->new_state; 832 if (lease->version == 2) 833 br_info->epoch = cpu_to_le16(++lease->epoch); 834 else 835 br_info->epoch = 0; 836 memcpy(br_info->lease_key, lease->lease_key, SMB2_LEASE_KEY_SIZE); 837 838 work->request_buf = (char *)br_info; 839 work->conn = conn; 840 work->sess = opinfo->sess; 841 842 if (opinfo->op_state == OPLOCK_ACK_WAIT) { 843 list_for_each_safe(tmp, t, &opinfo->interim_list) { 844 struct ksmbd_work *in_work; 845 846 in_work = list_entry(tmp, struct ksmbd_work, 847 interim_entry); 848 setup_async_work(in_work, NULL, NULL); 849 smb2_send_interim_resp(in_work, STATUS_PENDING); 850 list_del_init(&in_work->interim_entry); 851 release_async_work(in_work); 852 } 853 INIT_WORK(&work->work, __smb2_lease_break_noti); 854 ksmbd_queue_work(work); 855 wait_for_break_ack(opinfo); 856 } else { 857 __smb2_lease_break_noti(&work->work); 858 if (opinfo->o_lease->new_state == SMB2_LEASE_NONE_LE) { 859 opinfo->level = SMB2_OPLOCK_LEVEL_NONE; 860 opinfo->o_lease->state = SMB2_LEASE_NONE_LE; 861 } 862 } 863 return 0; 864 } 865 866 static void wait_lease_breaking(struct oplock_info *opinfo) 867 { 868 if (!opinfo->is_lease) 869 return; 870 871 wake_up_interruptible_all(&opinfo->oplock_brk); 872 if (atomic_read(&opinfo->breaking_cnt)) { 873 int ret = 0; 874 875 ret = wait_event_interruptible_timeout(opinfo->oplock_brk, 876 atomic_read(&opinfo->breaking_cnt) == 0, 877 HZ); 878 if (!ret) 879 atomic_set(&opinfo->breaking_cnt, 0); 880 } 881 } 882 883 static int oplock_break(struct oplock_info *brk_opinfo, int req_op_level) 884 { 885 int err = 0; 886 887 /* Need to break exclusive/batch oplock, write lease or overwrite_if */ 888 ksmbd_debug(OPLOCK, 889 "request to send oplock(level : 0x%x) break notification\n", 890 brk_opinfo->level); 891 892 if (brk_opinfo->is_lease) { 893 struct lease *lease = brk_opinfo->o_lease; 894 895 atomic_inc(&brk_opinfo->breaking_cnt); 896 err = oplock_break_pending(brk_opinfo, req_op_level); 897 if (err) 898 return err < 0 ? err : 0; 899 900 if (brk_opinfo->open_trunc) { 901 /* 902 * Create overwrite break trigger the lease break to 903 * none. 904 */ 905 lease->new_state = SMB2_LEASE_NONE_LE; 906 } else { 907 if (lease->state & SMB2_LEASE_WRITE_CACHING_LE) { 908 if (lease->state & SMB2_LEASE_HANDLE_CACHING_LE) 909 lease->new_state = 910 SMB2_LEASE_READ_CACHING_LE | 911 SMB2_LEASE_HANDLE_CACHING_LE; 912 else 913 lease->new_state = 914 SMB2_LEASE_READ_CACHING_LE; 915 } else { 916 if (lease->state & SMB2_LEASE_HANDLE_CACHING_LE && 917 !lease->is_dir) 918 lease->new_state = 919 SMB2_LEASE_READ_CACHING_LE; 920 else 921 lease->new_state = SMB2_LEASE_NONE_LE; 922 } 923 } 924 925 if (lease->state & (SMB2_LEASE_WRITE_CACHING_LE | 926 SMB2_LEASE_HANDLE_CACHING_LE)) 927 brk_opinfo->op_state = OPLOCK_ACK_WAIT; 928 else 929 atomic_dec(&brk_opinfo->breaking_cnt); 930 } else { 931 err = oplock_break_pending(brk_opinfo, req_op_level); 932 if (err) 933 return err < 0 ? err : 0; 934 935 if (brk_opinfo->level == SMB2_OPLOCK_LEVEL_BATCH || 936 brk_opinfo->level == SMB2_OPLOCK_LEVEL_EXCLUSIVE) 937 brk_opinfo->op_state = OPLOCK_ACK_WAIT; 938 } 939 940 if (brk_opinfo->is_lease) 941 err = smb2_lease_break_noti(brk_opinfo); 942 else 943 err = smb2_oplock_break_noti(brk_opinfo); 944 945 ksmbd_debug(OPLOCK, "oplock granted = %d\n", brk_opinfo->level); 946 if (brk_opinfo->op_state == OPLOCK_CLOSING) 947 err = -ENOENT; 948 wake_up_oplock_break(brk_opinfo); 949 950 wait_lease_breaking(brk_opinfo); 951 952 return err; 953 } 954 955 void destroy_lease_table(struct ksmbd_conn *conn) 956 { 957 struct lease_table *lb, *lbtmp; 958 struct oplock_info *opinfo; 959 960 write_lock(&lease_list_lock); 961 if (list_empty(&lease_table_list)) { 962 write_unlock(&lease_list_lock); 963 return; 964 } 965 966 list_for_each_entry_safe(lb, lbtmp, &lease_table_list, l_entry) { 967 if (conn && memcmp(lb->client_guid, conn->ClientGUID, 968 SMB2_CLIENT_GUID_SIZE)) 969 continue; 970 again: 971 rcu_read_lock(); 972 list_for_each_entry_rcu(opinfo, &lb->lease_list, 973 lease_entry) { 974 rcu_read_unlock(); 975 lease_del_list(opinfo); 976 goto again; 977 } 978 rcu_read_unlock(); 979 list_del(&lb->l_entry); 980 kfree(lb); 981 } 982 write_unlock(&lease_list_lock); 983 } 984 985 int find_same_lease_key(struct ksmbd_session *sess, struct ksmbd_inode *ci, 986 struct lease_ctx_info *lctx) 987 { 988 struct oplock_info *opinfo; 989 int err = 0; 990 struct lease_table *lb; 991 992 if (!lctx) 993 return err; 994 995 read_lock(&lease_list_lock); 996 if (list_empty(&lease_table_list)) { 997 read_unlock(&lease_list_lock); 998 return 0; 999 } 1000 1001 list_for_each_entry(lb, &lease_table_list, l_entry) { 1002 if (!memcmp(lb->client_guid, sess->ClientGUID, 1003 SMB2_CLIENT_GUID_SIZE)) 1004 goto found; 1005 } 1006 read_unlock(&lease_list_lock); 1007 1008 return 0; 1009 1010 found: 1011 rcu_read_lock(); 1012 list_for_each_entry_rcu(opinfo, &lb->lease_list, lease_entry) { 1013 if (!atomic_inc_not_zero(&opinfo->refcount)) 1014 continue; 1015 rcu_read_unlock(); 1016 if (opinfo->o_fp->f_ci == ci) 1017 goto op_next; 1018 err = compare_guid_key(opinfo, sess->ClientGUID, 1019 lctx->lease_key); 1020 if (err) { 1021 err = -EINVAL; 1022 ksmbd_debug(OPLOCK, 1023 "found same lease key is already used in other files\n"); 1024 opinfo_put(opinfo); 1025 goto out; 1026 } 1027 op_next: 1028 opinfo_put(opinfo); 1029 rcu_read_lock(); 1030 } 1031 rcu_read_unlock(); 1032 1033 out: 1034 read_unlock(&lease_list_lock); 1035 return err; 1036 } 1037 1038 static void copy_lease(struct oplock_info *op1, struct oplock_info *op2) 1039 { 1040 struct lease *lease1 = op1->o_lease; 1041 struct lease *lease2 = op2->o_lease; 1042 1043 op2->level = op1->level; 1044 lease2->state = lease1->state; 1045 memcpy(lease2->lease_key, lease1->lease_key, 1046 SMB2_LEASE_KEY_SIZE); 1047 lease2->duration = lease1->duration; 1048 lease2->flags = lease1->flags; 1049 lease2->epoch = lease1->epoch; 1050 lease2->version = lease1->version; 1051 } 1052 1053 static int add_lease_global_list(struct oplock_info *opinfo) 1054 { 1055 struct lease_table *lb; 1056 1057 read_lock(&lease_list_lock); 1058 list_for_each_entry(lb, &lease_table_list, l_entry) { 1059 if (!memcmp(lb->client_guid, opinfo->conn->ClientGUID, 1060 SMB2_CLIENT_GUID_SIZE)) { 1061 opinfo->o_lease->l_lb = lb; 1062 lease_add_list(opinfo); 1063 read_unlock(&lease_list_lock); 1064 return 0; 1065 } 1066 } 1067 read_unlock(&lease_list_lock); 1068 1069 lb = kmalloc(sizeof(struct lease_table), GFP_KERNEL); 1070 if (!lb) 1071 return -ENOMEM; 1072 1073 memcpy(lb->client_guid, opinfo->conn->ClientGUID, 1074 SMB2_CLIENT_GUID_SIZE); 1075 INIT_LIST_HEAD(&lb->lease_list); 1076 spin_lock_init(&lb->lb_lock); 1077 opinfo->o_lease->l_lb = lb; 1078 lease_add_list(opinfo); 1079 lb_add(lb); 1080 return 0; 1081 } 1082 1083 static void set_oplock_level(struct oplock_info *opinfo, int level, 1084 struct lease_ctx_info *lctx) 1085 { 1086 switch (level) { 1087 case SMB2_OPLOCK_LEVEL_BATCH: 1088 case SMB2_OPLOCK_LEVEL_EXCLUSIVE: 1089 grant_write_oplock(opinfo, level, lctx); 1090 break; 1091 case SMB2_OPLOCK_LEVEL_II: 1092 grant_read_oplock(opinfo, lctx); 1093 break; 1094 default: 1095 grant_none_oplock(opinfo, lctx); 1096 break; 1097 } 1098 } 1099 1100 void smb_send_parent_lease_break_noti(struct ksmbd_file *fp, 1101 struct lease_ctx_info *lctx) 1102 { 1103 struct oplock_info *opinfo; 1104 struct ksmbd_inode *p_ci = NULL; 1105 1106 if (lctx->version != 2) 1107 return; 1108 1109 p_ci = ksmbd_inode_lookup_lock(fp->filp->f_path.dentry->d_parent); 1110 if (!p_ci) 1111 return; 1112 1113 down_read(&p_ci->m_lock); 1114 list_for_each_entry(opinfo, &p_ci->m_op_list, op_entry) { 1115 if (opinfo->conn == NULL || !opinfo->is_lease) 1116 continue; 1117 1118 if (opinfo->o_lease->state != SMB2_OPLOCK_LEVEL_NONE && 1119 (!(lctx->flags & SMB2_LEASE_FLAG_PARENT_LEASE_KEY_SET_LE) || 1120 !compare_guid_key(opinfo, fp->conn->ClientGUID, 1121 lctx->parent_lease_key))) { 1122 if (!atomic_inc_not_zero(&opinfo->refcount)) 1123 continue; 1124 1125 atomic_inc(&opinfo->conn->r_count); 1126 if (ksmbd_conn_releasing(opinfo->conn)) { 1127 atomic_dec(&opinfo->conn->r_count); 1128 continue; 1129 } 1130 1131 oplock_break(opinfo, SMB2_OPLOCK_LEVEL_NONE); 1132 opinfo_conn_put(opinfo); 1133 } 1134 } 1135 up_read(&p_ci->m_lock); 1136 1137 ksmbd_inode_put(p_ci); 1138 } 1139 1140 void smb_lazy_parent_lease_break_close(struct ksmbd_file *fp) 1141 { 1142 struct oplock_info *opinfo; 1143 struct ksmbd_inode *p_ci = NULL; 1144 1145 rcu_read_lock(); 1146 opinfo = rcu_dereference(fp->f_opinfo); 1147 rcu_read_unlock(); 1148 1149 if (!opinfo || !opinfo->is_lease || opinfo->o_lease->version != 2) 1150 return; 1151 1152 p_ci = ksmbd_inode_lookup_lock(fp->filp->f_path.dentry->d_parent); 1153 if (!p_ci) 1154 return; 1155 1156 down_read(&p_ci->m_lock); 1157 list_for_each_entry(opinfo, &p_ci->m_op_list, op_entry) { 1158 if (opinfo->conn == NULL || !opinfo->is_lease) 1159 continue; 1160 1161 if (opinfo->o_lease->state != SMB2_OPLOCK_LEVEL_NONE) { 1162 if (!atomic_inc_not_zero(&opinfo->refcount)) 1163 continue; 1164 1165 atomic_inc(&opinfo->conn->r_count); 1166 if (ksmbd_conn_releasing(opinfo->conn)) { 1167 atomic_dec(&opinfo->conn->r_count); 1168 continue; 1169 } 1170 oplock_break(opinfo, SMB2_OPLOCK_LEVEL_NONE); 1171 opinfo_conn_put(opinfo); 1172 } 1173 } 1174 up_read(&p_ci->m_lock); 1175 1176 ksmbd_inode_put(p_ci); 1177 } 1178 1179 /** 1180 * smb_grant_oplock() - handle oplock/lease request on file open 1181 * @work: smb work 1182 * @req_op_level: oplock level 1183 * @pid: id of open file 1184 * @fp: ksmbd file pointer 1185 * @tid: Tree id of connection 1186 * @lctx: lease context information on file open 1187 * @share_ret: share mode 1188 * 1189 * Return: 0 on success, otherwise error 1190 */ 1191 int smb_grant_oplock(struct ksmbd_work *work, int req_op_level, u64 pid, 1192 struct ksmbd_file *fp, __u16 tid, 1193 struct lease_ctx_info *lctx, int share_ret) 1194 { 1195 struct ksmbd_session *sess = work->sess; 1196 int err = 0; 1197 struct oplock_info *opinfo = NULL, *prev_opinfo = NULL; 1198 struct ksmbd_inode *ci = fp->f_ci; 1199 bool prev_op_has_lease; 1200 __le32 prev_op_state = 0; 1201 1202 /* Only v2 leases handle the directory */ 1203 if (S_ISDIR(file_inode(fp->filp)->i_mode)) { 1204 if (!lctx || lctx->version != 2 || 1205 (lctx->flags != SMB2_LEASE_FLAG_PARENT_LEASE_KEY_SET_LE && 1206 !lctx->epoch)) 1207 return 0; 1208 } 1209 1210 opinfo = alloc_opinfo(work, pid, tid); 1211 if (!opinfo) 1212 return -ENOMEM; 1213 1214 if (lctx) { 1215 err = alloc_lease(opinfo, lctx); 1216 if (err) 1217 goto err_out; 1218 opinfo->is_lease = 1; 1219 } 1220 1221 /* ci does not have any oplock */ 1222 if (!opinfo_count(fp)) 1223 goto set_lev; 1224 1225 /* grant none-oplock if second open is trunc */ 1226 if (fp->attrib_only && fp->cdoption != FILE_OVERWRITE_IF_LE && 1227 fp->cdoption != FILE_OVERWRITE_LE && 1228 fp->cdoption != FILE_SUPERSEDE_LE) { 1229 req_op_level = SMB2_OPLOCK_LEVEL_NONE; 1230 goto set_lev; 1231 } 1232 1233 if (lctx) { 1234 struct oplock_info *m_opinfo; 1235 1236 /* is lease already granted ? */ 1237 m_opinfo = same_client_has_lease(ci, sess->ClientGUID, 1238 lctx); 1239 if (m_opinfo) { 1240 copy_lease(m_opinfo, opinfo); 1241 if (atomic_read(&m_opinfo->breaking_cnt)) 1242 opinfo->o_lease->flags = 1243 SMB2_LEASE_FLAG_BREAK_IN_PROGRESS_LE; 1244 goto out; 1245 } 1246 } 1247 prev_opinfo = opinfo_get_list(ci); 1248 if (!prev_opinfo || 1249 (prev_opinfo->level == SMB2_OPLOCK_LEVEL_NONE && lctx)) { 1250 opinfo_conn_put(prev_opinfo); 1251 goto set_lev; 1252 } 1253 prev_op_has_lease = prev_opinfo->is_lease; 1254 if (prev_op_has_lease) 1255 prev_op_state = prev_opinfo->o_lease->state; 1256 1257 if (share_ret < 0 && 1258 prev_opinfo->level == SMB2_OPLOCK_LEVEL_EXCLUSIVE) { 1259 err = share_ret; 1260 opinfo_conn_put(prev_opinfo); 1261 goto err_out; 1262 } 1263 1264 if (prev_opinfo->level != SMB2_OPLOCK_LEVEL_BATCH && 1265 prev_opinfo->level != SMB2_OPLOCK_LEVEL_EXCLUSIVE) { 1266 opinfo_conn_put(prev_opinfo); 1267 goto op_break_not_needed; 1268 } 1269 1270 list_add(&work->interim_entry, &prev_opinfo->interim_list); 1271 err = oplock_break(prev_opinfo, SMB2_OPLOCK_LEVEL_II); 1272 opinfo_conn_put(prev_opinfo); 1273 if (err == -ENOENT) 1274 goto set_lev; 1275 /* Check all oplock was freed by close */ 1276 else if (err < 0) 1277 goto err_out; 1278 1279 op_break_not_needed: 1280 if (share_ret < 0) { 1281 err = share_ret; 1282 goto err_out; 1283 } 1284 1285 if (req_op_level != SMB2_OPLOCK_LEVEL_NONE) 1286 req_op_level = SMB2_OPLOCK_LEVEL_II; 1287 1288 /* grant fixed oplock on stacked locking between lease and oplock */ 1289 if (prev_op_has_lease && !lctx) 1290 if (prev_op_state & SMB2_LEASE_HANDLE_CACHING_LE) 1291 req_op_level = SMB2_OPLOCK_LEVEL_NONE; 1292 1293 if (!prev_op_has_lease && lctx) { 1294 req_op_level = SMB2_OPLOCK_LEVEL_II; 1295 lctx->req_state = SMB2_LEASE_READ_CACHING_LE; 1296 } 1297 1298 set_lev: 1299 set_oplock_level(opinfo, req_op_level, lctx); 1300 1301 out: 1302 rcu_assign_pointer(fp->f_opinfo, opinfo); 1303 opinfo->o_fp = fp; 1304 1305 opinfo_count_inc(fp); 1306 opinfo_add(opinfo); 1307 if (opinfo->is_lease) { 1308 err = add_lease_global_list(opinfo); 1309 if (err) 1310 goto err_out; 1311 } 1312 1313 return 0; 1314 err_out: 1315 free_opinfo(opinfo); 1316 return err; 1317 } 1318 1319 /** 1320 * smb_break_all_write_oplock() - break batch/exclusive oplock to level2 1321 * @work: smb work 1322 * @fp: ksmbd file pointer 1323 * @is_trunc: truncate on open 1324 */ 1325 static void smb_break_all_write_oplock(struct ksmbd_work *work, 1326 struct ksmbd_file *fp, int is_trunc) 1327 { 1328 struct oplock_info *brk_opinfo; 1329 1330 brk_opinfo = opinfo_get_list(fp->f_ci); 1331 if (!brk_opinfo) 1332 return; 1333 if (brk_opinfo->level != SMB2_OPLOCK_LEVEL_BATCH && 1334 brk_opinfo->level != SMB2_OPLOCK_LEVEL_EXCLUSIVE) { 1335 opinfo_conn_put(brk_opinfo); 1336 return; 1337 } 1338 1339 brk_opinfo->open_trunc = is_trunc; 1340 list_add(&work->interim_entry, &brk_opinfo->interim_list); 1341 oplock_break(brk_opinfo, SMB2_OPLOCK_LEVEL_II); 1342 opinfo_conn_put(brk_opinfo); 1343 } 1344 1345 /** 1346 * smb_break_all_levII_oplock() - send level2 oplock or read lease break command 1347 * from server to client 1348 * @work: smb work 1349 * @fp: ksmbd file pointer 1350 * @is_trunc: truncate on open 1351 */ 1352 void smb_break_all_levII_oplock(struct ksmbd_work *work, struct ksmbd_file *fp, 1353 int is_trunc) 1354 { 1355 struct oplock_info *op, *brk_op; 1356 struct ksmbd_inode *ci; 1357 struct ksmbd_conn *conn = work->conn; 1358 1359 if (!test_share_config_flag(work->tcon->share_conf, 1360 KSMBD_SHARE_FLAG_OPLOCKS)) 1361 return; 1362 1363 ci = fp->f_ci; 1364 op = opinfo_get(fp); 1365 1366 rcu_read_lock(); 1367 list_for_each_entry_rcu(brk_op, &ci->m_op_list, op_entry) { 1368 if (brk_op->conn == NULL) 1369 continue; 1370 1371 if (!atomic_inc_not_zero(&brk_op->refcount)) 1372 continue; 1373 1374 atomic_inc(&brk_op->conn->r_count); 1375 if (ksmbd_conn_releasing(brk_op->conn)) { 1376 atomic_dec(&brk_op->conn->r_count); 1377 continue; 1378 } 1379 1380 rcu_read_unlock(); 1381 if (brk_op->is_lease && (brk_op->o_lease->state & 1382 (~(SMB2_LEASE_READ_CACHING_LE | 1383 SMB2_LEASE_HANDLE_CACHING_LE)))) { 1384 ksmbd_debug(OPLOCK, "unexpected lease state(0x%x)\n", 1385 brk_op->o_lease->state); 1386 goto next; 1387 } else if (brk_op->level != 1388 SMB2_OPLOCK_LEVEL_II) { 1389 ksmbd_debug(OPLOCK, "unexpected oplock(0x%x)\n", 1390 brk_op->level); 1391 goto next; 1392 } 1393 1394 /* Skip oplock being break to none */ 1395 if (brk_op->is_lease && 1396 brk_op->o_lease->new_state == SMB2_LEASE_NONE_LE && 1397 atomic_read(&brk_op->breaking_cnt)) 1398 goto next; 1399 1400 if (op && op->is_lease && brk_op->is_lease && 1401 !memcmp(conn->ClientGUID, brk_op->conn->ClientGUID, 1402 SMB2_CLIENT_GUID_SIZE) && 1403 !memcmp(op->o_lease->lease_key, brk_op->o_lease->lease_key, 1404 SMB2_LEASE_KEY_SIZE)) 1405 goto next; 1406 brk_op->open_trunc = is_trunc; 1407 oplock_break(brk_op, SMB2_OPLOCK_LEVEL_NONE); 1408 next: 1409 opinfo_conn_put(brk_op); 1410 rcu_read_lock(); 1411 } 1412 rcu_read_unlock(); 1413 1414 if (op) 1415 opinfo_put(op); 1416 } 1417 1418 /** 1419 * smb_break_all_oplock() - break both batch/exclusive and level2 oplock 1420 * @work: smb work 1421 * @fp: ksmbd file pointer 1422 */ 1423 void smb_break_all_oplock(struct ksmbd_work *work, struct ksmbd_file *fp) 1424 { 1425 if (!test_share_config_flag(work->tcon->share_conf, 1426 KSMBD_SHARE_FLAG_OPLOCKS)) 1427 return; 1428 1429 smb_break_all_write_oplock(work, fp, 1); 1430 smb_break_all_levII_oplock(work, fp, 1); 1431 } 1432 1433 /** 1434 * smb2_map_lease_to_oplock() - map lease state to corresponding oplock type 1435 * @lease_state: lease type 1436 * 1437 * Return: 0 if no mapping, otherwise corresponding oplock type 1438 */ 1439 __u8 smb2_map_lease_to_oplock(__le32 lease_state) 1440 { 1441 if (lease_state == (SMB2_LEASE_HANDLE_CACHING_LE | 1442 SMB2_LEASE_READ_CACHING_LE | 1443 SMB2_LEASE_WRITE_CACHING_LE)) { 1444 return SMB2_OPLOCK_LEVEL_BATCH; 1445 } else if (lease_state != SMB2_LEASE_WRITE_CACHING_LE && 1446 lease_state & SMB2_LEASE_WRITE_CACHING_LE) { 1447 if (!(lease_state & SMB2_LEASE_HANDLE_CACHING_LE)) 1448 return SMB2_OPLOCK_LEVEL_EXCLUSIVE; 1449 } else if (lease_state & SMB2_LEASE_READ_CACHING_LE) { 1450 return SMB2_OPLOCK_LEVEL_II; 1451 } 1452 return 0; 1453 } 1454 1455 /** 1456 * create_lease_buf() - create lease context for open cmd response 1457 * @rbuf: buffer to create lease context response 1458 * @lease: buffer to stored parsed lease state information 1459 */ 1460 void create_lease_buf(u8 *rbuf, struct lease *lease) 1461 { 1462 if (lease->version == 2) { 1463 struct create_lease_v2 *buf = (struct create_lease_v2 *)rbuf; 1464 1465 memset(buf, 0, sizeof(struct create_lease_v2)); 1466 memcpy(buf->lcontext.LeaseKey, lease->lease_key, 1467 SMB2_LEASE_KEY_SIZE); 1468 buf->lcontext.LeaseFlags = lease->flags; 1469 buf->lcontext.Epoch = cpu_to_le16(lease->epoch); 1470 buf->lcontext.LeaseState = lease->state; 1471 if (lease->flags == SMB2_LEASE_FLAG_PARENT_LEASE_KEY_SET_LE) 1472 memcpy(buf->lcontext.ParentLeaseKey, lease->parent_lease_key, 1473 SMB2_LEASE_KEY_SIZE); 1474 buf->ccontext.DataOffset = cpu_to_le16(offsetof 1475 (struct create_lease_v2, lcontext)); 1476 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context_v2)); 1477 buf->ccontext.NameOffset = cpu_to_le16(offsetof 1478 (struct create_lease_v2, Name)); 1479 buf->ccontext.NameLength = cpu_to_le16(4); 1480 buf->Name[0] = 'R'; 1481 buf->Name[1] = 'q'; 1482 buf->Name[2] = 'L'; 1483 buf->Name[3] = 's'; 1484 } else { 1485 struct create_lease *buf = (struct create_lease *)rbuf; 1486 1487 memset(buf, 0, sizeof(struct create_lease)); 1488 memcpy(buf->lcontext.LeaseKey, lease->lease_key, SMB2_LEASE_KEY_SIZE); 1489 buf->lcontext.LeaseFlags = lease->flags; 1490 buf->lcontext.LeaseState = lease->state; 1491 buf->ccontext.DataOffset = cpu_to_le16(offsetof 1492 (struct create_lease, lcontext)); 1493 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context)); 1494 buf->ccontext.NameOffset = cpu_to_le16(offsetof 1495 (struct create_lease, Name)); 1496 buf->ccontext.NameLength = cpu_to_le16(4); 1497 buf->Name[0] = 'R'; 1498 buf->Name[1] = 'q'; 1499 buf->Name[2] = 'L'; 1500 buf->Name[3] = 's'; 1501 } 1502 } 1503 1504 /** 1505 * parse_lease_state() - parse lease context containted in file open request 1506 * @open_req: buffer containing smb2 file open(create) request 1507 * 1508 * Return: oplock state, -ENOENT if create lease context not found 1509 */ 1510 struct lease_ctx_info *parse_lease_state(void *open_req) 1511 { 1512 struct create_context *cc; 1513 struct smb2_create_req *req = (struct smb2_create_req *)open_req; 1514 struct lease_ctx_info *lreq; 1515 1516 cc = smb2_find_context_vals(req, SMB2_CREATE_REQUEST_LEASE, 4); 1517 if (IS_ERR_OR_NULL(cc)) 1518 return NULL; 1519 1520 lreq = kzalloc(sizeof(struct lease_ctx_info), GFP_KERNEL); 1521 if (!lreq) 1522 return NULL; 1523 1524 if (sizeof(struct lease_context_v2) == le32_to_cpu(cc->DataLength)) { 1525 struct create_lease_v2 *lc = (struct create_lease_v2 *)cc; 1526 1527 memcpy(lreq->lease_key, lc->lcontext.LeaseKey, SMB2_LEASE_KEY_SIZE); 1528 lreq->req_state = lc->lcontext.LeaseState; 1529 lreq->flags = lc->lcontext.LeaseFlags; 1530 lreq->epoch = lc->lcontext.Epoch; 1531 lreq->duration = lc->lcontext.LeaseDuration; 1532 if (lreq->flags == SMB2_LEASE_FLAG_PARENT_LEASE_KEY_SET_LE) 1533 memcpy(lreq->parent_lease_key, lc->lcontext.ParentLeaseKey, 1534 SMB2_LEASE_KEY_SIZE); 1535 lreq->version = 2; 1536 } else { 1537 struct create_lease *lc = (struct create_lease *)cc; 1538 1539 memcpy(lreq->lease_key, lc->lcontext.LeaseKey, SMB2_LEASE_KEY_SIZE); 1540 lreq->req_state = lc->lcontext.LeaseState; 1541 lreq->flags = lc->lcontext.LeaseFlags; 1542 lreq->duration = lc->lcontext.LeaseDuration; 1543 lreq->version = 1; 1544 } 1545 return lreq; 1546 } 1547 1548 /** 1549 * smb2_find_context_vals() - find a particular context info in open request 1550 * @open_req: buffer containing smb2 file open(create) request 1551 * @tag: context name to search for 1552 * @tag_len: the length of tag 1553 * 1554 * Return: pointer to requested context, NULL if @str context not found 1555 * or error pointer if name length is invalid. 1556 */ 1557 struct create_context *smb2_find_context_vals(void *open_req, const char *tag, int tag_len) 1558 { 1559 struct create_context *cc; 1560 unsigned int next = 0; 1561 char *name; 1562 struct smb2_create_req *req = (struct smb2_create_req *)open_req; 1563 unsigned int remain_len, name_off, name_len, value_off, value_len, 1564 cc_len; 1565 1566 /* 1567 * CreateContextsOffset and CreateContextsLength are guaranteed to 1568 * be valid because of ksmbd_smb2_check_message(). 1569 */ 1570 cc = (struct create_context *)((char *)req + 1571 le32_to_cpu(req->CreateContextsOffset)); 1572 remain_len = le32_to_cpu(req->CreateContextsLength); 1573 do { 1574 cc = (struct create_context *)((char *)cc + next); 1575 if (remain_len < offsetof(struct create_context, Buffer)) 1576 return ERR_PTR(-EINVAL); 1577 1578 next = le32_to_cpu(cc->Next); 1579 name_off = le16_to_cpu(cc->NameOffset); 1580 name_len = le16_to_cpu(cc->NameLength); 1581 value_off = le16_to_cpu(cc->DataOffset); 1582 value_len = le32_to_cpu(cc->DataLength); 1583 cc_len = next ? next : remain_len; 1584 1585 if ((next & 0x7) != 0 || 1586 next > remain_len || 1587 name_off != offsetof(struct create_context, Buffer) || 1588 name_len < 4 || 1589 name_off + name_len > cc_len || 1590 (value_off & 0x7) != 0 || 1591 (value_len && value_off < name_off + (name_len < 8 ? 8 : name_len)) || 1592 ((u64)value_off + value_len > cc_len)) 1593 return ERR_PTR(-EINVAL); 1594 1595 name = (char *)cc + name_off; 1596 if (name_len == tag_len && !memcmp(name, tag, name_len)) 1597 return cc; 1598 1599 remain_len -= next; 1600 } while (next != 0); 1601 1602 return NULL; 1603 } 1604 1605 /** 1606 * create_durable_rsp_buf() - create durable handle context 1607 * @cc: buffer to create durable context response 1608 */ 1609 void create_durable_rsp_buf(char *cc) 1610 { 1611 struct create_durable_rsp *buf; 1612 1613 buf = (struct create_durable_rsp *)cc; 1614 memset(buf, 0, sizeof(struct create_durable_rsp)); 1615 buf->ccontext.DataOffset = cpu_to_le16(offsetof 1616 (struct create_durable_rsp, Data)); 1617 buf->ccontext.DataLength = cpu_to_le32(8); 1618 buf->ccontext.NameOffset = cpu_to_le16(offsetof 1619 (struct create_durable_rsp, Name)); 1620 buf->ccontext.NameLength = cpu_to_le16(4); 1621 /* SMB2_CREATE_DURABLE_HANDLE_RESPONSE is "DHnQ" */ 1622 buf->Name[0] = 'D'; 1623 buf->Name[1] = 'H'; 1624 buf->Name[2] = 'n'; 1625 buf->Name[3] = 'Q'; 1626 } 1627 1628 /** 1629 * create_durable_v2_rsp_buf() - create durable handle v2 context 1630 * @cc: buffer to create durable context response 1631 * @fp: ksmbd file pointer 1632 */ 1633 void create_durable_v2_rsp_buf(char *cc, struct ksmbd_file *fp) 1634 { 1635 struct create_durable_v2_rsp *buf; 1636 1637 buf = (struct create_durable_v2_rsp *)cc; 1638 memset(buf, 0, sizeof(struct create_durable_rsp)); 1639 buf->ccontext.DataOffset = cpu_to_le16(offsetof 1640 (struct create_durable_rsp, Data)); 1641 buf->ccontext.DataLength = cpu_to_le32(8); 1642 buf->ccontext.NameOffset = cpu_to_le16(offsetof 1643 (struct create_durable_rsp, Name)); 1644 buf->ccontext.NameLength = cpu_to_le16(4); 1645 /* SMB2_CREATE_DURABLE_HANDLE_RESPONSE_V2 is "DH2Q" */ 1646 buf->Name[0] = 'D'; 1647 buf->Name[1] = 'H'; 1648 buf->Name[2] = '2'; 1649 buf->Name[3] = 'Q'; 1650 1651 buf->Timeout = cpu_to_le32(fp->durable_timeout); 1652 if (fp->is_persistent) 1653 buf->Flags = cpu_to_le32(SMB2_DHANDLE_FLAG_PERSISTENT); 1654 } 1655 1656 /** 1657 * create_mxac_rsp_buf() - create query maximal access context 1658 * @cc: buffer to create maximal access context response 1659 * @maximal_access: maximal access 1660 */ 1661 void create_mxac_rsp_buf(char *cc, int maximal_access) 1662 { 1663 struct create_mxac_rsp *buf; 1664 1665 buf = (struct create_mxac_rsp *)cc; 1666 memset(buf, 0, sizeof(struct create_mxac_rsp)); 1667 buf->ccontext.DataOffset = cpu_to_le16(offsetof 1668 (struct create_mxac_rsp, QueryStatus)); 1669 buf->ccontext.DataLength = cpu_to_le32(8); 1670 buf->ccontext.NameOffset = cpu_to_le16(offsetof 1671 (struct create_mxac_rsp, Name)); 1672 buf->ccontext.NameLength = cpu_to_le16(4); 1673 /* SMB2_CREATE_QUERY_MAXIMAL_ACCESS_RESPONSE is "MxAc" */ 1674 buf->Name[0] = 'M'; 1675 buf->Name[1] = 'x'; 1676 buf->Name[2] = 'A'; 1677 buf->Name[3] = 'c'; 1678 1679 buf->QueryStatus = STATUS_SUCCESS; 1680 buf->MaximalAccess = cpu_to_le32(maximal_access); 1681 } 1682 1683 void create_disk_id_rsp_buf(char *cc, __u64 file_id, __u64 vol_id) 1684 { 1685 struct create_disk_id_rsp *buf; 1686 1687 buf = (struct create_disk_id_rsp *)cc; 1688 memset(buf, 0, sizeof(struct create_disk_id_rsp)); 1689 buf->ccontext.DataOffset = cpu_to_le16(offsetof 1690 (struct create_disk_id_rsp, DiskFileId)); 1691 buf->ccontext.DataLength = cpu_to_le32(32); 1692 buf->ccontext.NameOffset = cpu_to_le16(offsetof 1693 (struct create_mxac_rsp, Name)); 1694 buf->ccontext.NameLength = cpu_to_le16(4); 1695 /* SMB2_CREATE_QUERY_ON_DISK_ID_RESPONSE is "QFid" */ 1696 buf->Name[0] = 'Q'; 1697 buf->Name[1] = 'F'; 1698 buf->Name[2] = 'i'; 1699 buf->Name[3] = 'd'; 1700 1701 buf->DiskFileId = cpu_to_le64(file_id); 1702 buf->VolumeId = cpu_to_le64(vol_id); 1703 } 1704 1705 /** 1706 * create_posix_rsp_buf() - create posix extension context 1707 * @cc: buffer to create posix on posix response 1708 * @fp: ksmbd file pointer 1709 */ 1710 void create_posix_rsp_buf(char *cc, struct ksmbd_file *fp) 1711 { 1712 struct create_posix_rsp *buf; 1713 struct inode *inode = file_inode(fp->filp); 1714 struct mnt_idmap *idmap = file_mnt_idmap(fp->filp); 1715 vfsuid_t vfsuid = i_uid_into_vfsuid(idmap, inode); 1716 vfsgid_t vfsgid = i_gid_into_vfsgid(idmap, inode); 1717 1718 buf = (struct create_posix_rsp *)cc; 1719 memset(buf, 0, sizeof(struct create_posix_rsp)); 1720 buf->ccontext.DataOffset = cpu_to_le16(offsetof 1721 (struct create_posix_rsp, nlink)); 1722 /* 1723 * DataLength = nlink(4) + reparse_tag(4) + mode(4) + 1724 * domain sid(28) + unix group sid(16). 1725 */ 1726 buf->ccontext.DataLength = cpu_to_le32(56); 1727 buf->ccontext.NameOffset = cpu_to_le16(offsetof 1728 (struct create_posix_rsp, Name)); 1729 buf->ccontext.NameLength = cpu_to_le16(POSIX_CTXT_DATA_LEN); 1730 /* SMB2_CREATE_TAG_POSIX is "0x93AD25509CB411E7B42383DE968BCD7C" */ 1731 buf->Name[0] = 0x93; 1732 buf->Name[1] = 0xAD; 1733 buf->Name[2] = 0x25; 1734 buf->Name[3] = 0x50; 1735 buf->Name[4] = 0x9C; 1736 buf->Name[5] = 0xB4; 1737 buf->Name[6] = 0x11; 1738 buf->Name[7] = 0xE7; 1739 buf->Name[8] = 0xB4; 1740 buf->Name[9] = 0x23; 1741 buf->Name[10] = 0x83; 1742 buf->Name[11] = 0xDE; 1743 buf->Name[12] = 0x96; 1744 buf->Name[13] = 0x8B; 1745 buf->Name[14] = 0xCD; 1746 buf->Name[15] = 0x7C; 1747 1748 buf->nlink = cpu_to_le32(inode->i_nlink); 1749 buf->reparse_tag = cpu_to_le32(fp->volatile_id); 1750 buf->mode = cpu_to_le32(inode->i_mode & 0777); 1751 /* 1752 * SidBuffer(44) contain two sids(Domain sid(28), UNIX group sid(16)). 1753 * Domain sid(28) = revision(1) + num_subauth(1) + authority(6) + 1754 * sub_auth(4 * 4(num_subauth)) + RID(4). 1755 * UNIX group id(16) = revision(1) + num_subauth(1) + authority(6) + 1756 * sub_auth(4 * 1(num_subauth)) + RID(4). 1757 */ 1758 id_to_sid(from_kuid_munged(&init_user_ns, vfsuid_into_kuid(vfsuid)), 1759 SIDOWNER, (struct smb_sid *)&buf->SidBuffer[0]); 1760 id_to_sid(from_kgid_munged(&init_user_ns, vfsgid_into_kgid(vfsgid)), 1761 SIDUNIX_GROUP, (struct smb_sid *)&buf->SidBuffer[28]); 1762 } 1763 1764 /* 1765 * Find lease object(opinfo) for given lease key/fid from lease 1766 * break/file close path. 1767 */ 1768 /** 1769 * lookup_lease_in_table() - find a matching lease info object 1770 * @conn: connection instance 1771 * @lease_key: lease key to be searched for 1772 * 1773 * Return: opinfo if found matching opinfo, otherwise NULL 1774 */ 1775 struct oplock_info *lookup_lease_in_table(struct ksmbd_conn *conn, 1776 char *lease_key) 1777 { 1778 struct oplock_info *opinfo = NULL, *ret_op = NULL; 1779 struct lease_table *lt; 1780 int ret; 1781 1782 read_lock(&lease_list_lock); 1783 list_for_each_entry(lt, &lease_table_list, l_entry) { 1784 if (!memcmp(lt->client_guid, conn->ClientGUID, 1785 SMB2_CLIENT_GUID_SIZE)) 1786 goto found; 1787 } 1788 1789 read_unlock(&lease_list_lock); 1790 return NULL; 1791 1792 found: 1793 rcu_read_lock(); 1794 list_for_each_entry_rcu(opinfo, <->lease_list, lease_entry) { 1795 if (!atomic_inc_not_zero(&opinfo->refcount)) 1796 continue; 1797 rcu_read_unlock(); 1798 if (!opinfo->op_state || opinfo->op_state == OPLOCK_CLOSING) 1799 goto op_next; 1800 if (!(opinfo->o_lease->state & 1801 (SMB2_LEASE_HANDLE_CACHING_LE | 1802 SMB2_LEASE_WRITE_CACHING_LE))) 1803 goto op_next; 1804 ret = compare_guid_key(opinfo, conn->ClientGUID, 1805 lease_key); 1806 if (ret) { 1807 ksmbd_debug(OPLOCK, "found opinfo\n"); 1808 ret_op = opinfo; 1809 goto out; 1810 } 1811 op_next: 1812 opinfo_put(opinfo); 1813 rcu_read_lock(); 1814 } 1815 rcu_read_unlock(); 1816 1817 out: 1818 read_unlock(&lease_list_lock); 1819 return ret_op; 1820 } 1821 1822 int smb2_check_durable_oplock(struct ksmbd_conn *conn, 1823 struct ksmbd_share_config *share, 1824 struct ksmbd_file *fp, 1825 struct lease_ctx_info *lctx, 1826 char *name) 1827 { 1828 struct oplock_info *opinfo = opinfo_get(fp); 1829 int ret = 0; 1830 1831 if (!opinfo) 1832 return 0; 1833 1834 if (opinfo->is_lease == false) { 1835 if (lctx) { 1836 pr_err("create context include lease\n"); 1837 ret = -EBADF; 1838 goto out; 1839 } 1840 1841 if (opinfo->level != SMB2_OPLOCK_LEVEL_BATCH) { 1842 pr_err("oplock level is not equal to SMB2_OPLOCK_LEVEL_BATCH\n"); 1843 ret = -EBADF; 1844 } 1845 1846 goto out; 1847 } 1848 1849 if (memcmp(conn->ClientGUID, fp->client_guid, 1850 SMB2_CLIENT_GUID_SIZE)) { 1851 ksmbd_debug(SMB, "Client guid of fp is not equal to the one of connection\n"); 1852 ret = -EBADF; 1853 goto out; 1854 } 1855 1856 if (!lctx) { 1857 ksmbd_debug(SMB, "create context does not include lease\n"); 1858 ret = -EBADF; 1859 goto out; 1860 } 1861 1862 if (memcmp(opinfo->o_lease->lease_key, lctx->lease_key, 1863 SMB2_LEASE_KEY_SIZE)) { 1864 ksmbd_debug(SMB, 1865 "lease key of fp does not match lease key in create context\n"); 1866 ret = -EBADF; 1867 goto out; 1868 } 1869 1870 if (!(opinfo->o_lease->state & SMB2_LEASE_HANDLE_CACHING_LE)) { 1871 ksmbd_debug(SMB, "lease state does not contain SMB2_LEASE_HANDLE_CACHING\n"); 1872 ret = -EBADF; 1873 goto out; 1874 } 1875 1876 if (opinfo->o_lease->version != lctx->version) { 1877 ksmbd_debug(SMB, 1878 "lease version of fp does not match the one in create context\n"); 1879 ret = -EBADF; 1880 goto out; 1881 } 1882 1883 if (!ksmbd_inode_pending_delete(fp)) 1884 ret = ksmbd_validate_name_reconnect(share, fp, name); 1885 out: 1886 opinfo_put(opinfo); 1887 return ret; 1888 } 1889