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 2009 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 /* 27 * This module provides the common open functionality to the various 28 * open and create SMB interface functions. 29 */ 30 31 #include <sys/types.h> 32 #include <sys/cmn_err.h> 33 #include <sys/fcntl.h> 34 #include <sys/nbmlock.h> 35 #include <smbsrv/string.h> 36 #include <smbsrv/smb_kproto.h> 37 #include <smbsrv/smb_fsops.h> 38 #include <smbsrv/smbinfo.h> 39 40 volatile uint32_t smb_fids = 0; 41 42 static uint32_t smb_open_subr(smb_request_t *); 43 extern uint32_t smb_is_executable(char *); 44 static void smb_delete_new_object(smb_request_t *); 45 static int smb_set_open_timestamps(smb_request_t *, smb_ofile_t *, boolean_t); 46 47 /* 48 * smb_access_generic_to_file 49 * 50 * Search MSDN for IoCreateFile to see following mapping. 51 * 52 * GENERIC_READ STANDARD_RIGHTS_READ, FILE_READ_DATA, 53 * FILE_READ_ATTRIBUTES and FILE_READ_EA 54 * 55 * GENERIC_WRITE STANDARD_RIGHTS_WRITE, FILE_WRITE_DATA, 56 * FILE_WRITE_ATTRIBUTES, FILE_WRITE_EA, and FILE_APPEND_DATA 57 * 58 * GENERIC_EXECUTE STANDARD_RIGHTS_EXECUTE, SYNCHRONIZE, and FILE_EXECUTE. 59 */ 60 uint32_t 61 smb_access_generic_to_file(uint32_t desired_access) 62 { 63 uint32_t access = 0; 64 65 if (desired_access & GENERIC_ALL) 66 return (FILE_ALL_ACCESS & ~SYNCHRONIZE); 67 68 if (desired_access & GENERIC_EXECUTE) { 69 desired_access &= ~GENERIC_EXECUTE; 70 access |= (STANDARD_RIGHTS_EXECUTE | 71 SYNCHRONIZE | FILE_EXECUTE); 72 } 73 74 if (desired_access & GENERIC_WRITE) { 75 desired_access &= ~GENERIC_WRITE; 76 access |= (FILE_GENERIC_WRITE & ~SYNCHRONIZE); 77 } 78 79 if (desired_access & GENERIC_READ) { 80 desired_access &= ~GENERIC_READ; 81 access |= FILE_GENERIC_READ; 82 } 83 84 return (access | desired_access); 85 } 86 87 /* 88 * smb_omode_to_amask 89 * 90 * This function converts open modes used by Open and Open AndX 91 * commands to desired access bits used by NT Create AndX command. 92 */ 93 uint32_t 94 smb_omode_to_amask(uint32_t desired_access) 95 { 96 switch (desired_access & SMB_DA_ACCESS_MASK) { 97 case SMB_DA_ACCESS_READ: 98 return (FILE_GENERIC_READ); 99 100 case SMB_DA_ACCESS_WRITE: 101 return (FILE_GENERIC_WRITE); 102 103 case SMB_DA_ACCESS_READ_WRITE: 104 return (FILE_GENERIC_READ | FILE_GENERIC_WRITE); 105 106 case SMB_DA_ACCESS_EXECUTE: 107 return (FILE_GENERIC_EXECUTE); 108 109 default: 110 return (FILE_GENERIC_ALL); 111 } 112 } 113 114 /* 115 * smb_denymode_to_sharemode 116 * 117 * This function converts deny modes used by Open and Open AndX 118 * commands to share access bits used by NT Create AndX command. 119 */ 120 uint32_t 121 smb_denymode_to_sharemode(uint32_t desired_access, char *fname) 122 { 123 switch (desired_access & SMB_DA_SHARE_MASK) { 124 case SMB_DA_SHARE_COMPATIBILITY: 125 if (smb_is_executable(fname)) 126 return (FILE_SHARE_READ | FILE_SHARE_WRITE); 127 128 return (FILE_SHARE_ALL); 129 130 case SMB_DA_SHARE_EXCLUSIVE: 131 return (FILE_SHARE_NONE); 132 133 case SMB_DA_SHARE_DENY_WRITE: 134 return (FILE_SHARE_READ); 135 136 case SMB_DA_SHARE_DENY_READ: 137 return (FILE_SHARE_WRITE); 138 139 case SMB_DA_SHARE_DENY_NONE: 140 default: 141 return (FILE_SHARE_READ | FILE_SHARE_WRITE); 142 } 143 } 144 145 /* 146 * smb_ofun_to_crdisposition 147 * 148 * This function converts open function values used by Open and Open AndX 149 * commands to create disposition values used by NT Create AndX command. 150 */ 151 uint32_t 152 smb_ofun_to_crdisposition(uint16_t ofun) 153 { 154 static int ofun_cr_map[3][2] = 155 { 156 { -1, FILE_CREATE }, 157 { FILE_OPEN, FILE_OPEN_IF }, 158 { FILE_OVERWRITE, FILE_OVERWRITE_IF } 159 }; 160 161 int row = ofun & SMB_OFUN_OPEN_MASK; 162 int col = (ofun & SMB_OFUN_CREATE_MASK) >> 4; 163 164 if (row == 3) 165 return (FILE_MAXIMUM_DISPOSITION + 1); 166 167 return (ofun_cr_map[row][col]); 168 } 169 170 /* 171 * Retry opens to avoid spurious sharing violations, due to timing 172 * issues between closes and opens. The client that already has the 173 * file open may be in the process of closing it. 174 */ 175 uint32_t 176 smb_common_open(smb_request_t *sr) 177 { 178 open_param_t *parg; 179 uint32_t status = NT_STATUS_SUCCESS; 180 int count; 181 182 parg = kmem_alloc(sizeof (*parg), KM_SLEEP); 183 bcopy(&sr->arg.open, parg, sizeof (*parg)); 184 185 for (count = 0; count <= 4; count++) { 186 if (count != 0) 187 delay(MSEC_TO_TICK(400)); 188 189 status = smb_open_subr(sr); 190 if (status != NT_STATUS_SHARING_VIOLATION) 191 break; 192 193 bcopy(parg, &sr->arg.open, sizeof (*parg)); 194 } 195 196 if (status == NT_STATUS_SHARING_VIOLATION) { 197 smbsr_error(sr, NT_STATUS_SHARING_VIOLATION, 198 ERRDOS, ERROR_SHARING_VIOLATION); 199 } 200 201 if (status == NT_STATUS_NO_SUCH_FILE) { 202 smbsr_error(sr, NT_STATUS_OBJECT_NAME_NOT_FOUND, 203 ERRDOS, ERROR_FILE_NOT_FOUND); 204 } 205 206 kmem_free(parg, sizeof (*parg)); 207 208 return (status); 209 } 210 211 /* 212 * smb_open_subr 213 * 214 * Notes on write-through behaviour. It looks like pre-LM0.12 versions 215 * of the protocol specify the write-through mode when a file is opened, 216 * (SmbOpen, SmbOpenAndX) so the write calls (SmbWrite, SmbWriteAndClose, 217 * SmbWriteAndUnlock) don't need to contain a write-through flag. 218 * 219 * With LM0.12, the open calls (SmbCreateAndX, SmbNtTransactCreate) 220 * don't indicate which write-through mode to use. Instead the write 221 * calls (SmbWriteAndX, SmbWriteRaw) specify the mode on a per call 222 * basis. 223 * 224 * We don't care which open call was used to get us here, we just need 225 * to ensure that the write-through mode flag is copied from the open 226 * parameters to the node. We test the omode write-through flag in all 227 * write functions. 228 * 229 * This function will return NT status codes but it also raises errors, 230 * in which case it won't return to the caller. Be careful how you 231 * handle things in here. 232 * 233 * The following rules apply when processing a file open request: 234 * 235 * - Oplocks must be broken prior to share checking to prevent open 236 * starvation due to batch oplocks. Checking share reservations first 237 * could potentially result in unnecessary open failures due to 238 * open/close batching on the client. 239 * 240 * - Share checks must take place prior to access checks for correct 241 * Windows semantics and to prevent unnecessary NFS delegation recalls. 242 * 243 * - Oplocks must be acquired after open to ensure the correct 244 * synchronization with NFS delegation and FEM installation. 245 * 246 * 247 * DOS readonly bit rules 248 * 249 * 1. The creator of a readonly file can write to/modify the size of the file 250 * using the original create fid, even though the file will appear as readonly 251 * to all other fids and via a CIFS getattr call. 252 * The readonly bit therefore cannot be set in the filesystem until the file 253 * is closed (smb_ofile_close). It is accounted for via ofile and node flags. 254 * 255 * 2. A setinfo operation (using either an open fid or a path) to set/unset 256 * readonly will be successful regardless of whether a creator of a readonly 257 * file has an open fid (and has the special privilege mentioned in #1, 258 * above). I.e., the creator of a readonly fid holding that fid will no longer 259 * have a special privilege. 260 * 261 * 3. The DOS readonly bit affects only data and some metadata. 262 * The following metadata can be changed regardless of the readonly bit: 263 * - security descriptors 264 * - DOS attributes 265 * - timestamps 266 * 267 * In the current implementation, the file size cannot be changed (except for 268 * the exceptions in #1 and #2, above). 269 * 270 * 271 * DOS attribute rules 272 * 273 * These rules are specific to creating / opening files and directories. 274 * How the attribute value (specifically ZERO or FILE_ATTRIBUTE_NORMAL) 275 * should be interpreted may differ in other requests. 276 * 277 * - An attribute value equal to ZERO or FILE_ATTRIBUTE_NORMAL means that the 278 * file's attributes should be cleared. 279 * - If FILE_ATTRIBUTE_NORMAL is specified with any other attributes, 280 * FILE_ATTRIBUTE_NORMAL is ignored. 281 * 282 * 1. Creating a new file 283 * - The request attributes + FILE_ATTRIBUTE_ARCHIVE are applied to the file. 284 * 285 * 2. Creating a new directory 286 * - The request attributes + FILE_ATTRIBUTE_DIRECTORY are applied to the file. 287 * - FILE_ATTRIBUTE_ARCHIVE does not get set. 288 * 289 * 3. Overwriting an existing file 290 * - the request attributes are used as search attributes. If the existing 291 * file does not meet the search criteria access is denied. 292 * - otherwise, applies attributes + FILE_ATTRIBUTE_ARCHIVE. 293 * 294 * 4. Opening an existing file or directory 295 * The request attributes are ignored. 296 */ 297 static uint32_t 298 smb_open_subr(smb_request_t *sr) 299 { 300 boolean_t created = B_FALSE; 301 boolean_t last_comp_found = B_FALSE; 302 smb_node_t *node = NULL; 303 smb_node_t *dnode = NULL; 304 smb_node_t *cur_node = NULL; 305 open_param_t *op = &sr->arg.open; 306 int rc; 307 smb_ofile_t *of; 308 smb_attr_t new_attr; 309 int max_requested = 0; 310 uint32_t max_allowed; 311 uint32_t status = NT_STATUS_SUCCESS; 312 int is_dir; 313 smb_error_t err; 314 boolean_t is_stream = B_FALSE; 315 int lookup_flags = SMB_FOLLOW_LINKS; 316 uint32_t uniq_fid; 317 smb_pathname_t *pn = &op->fqi.fq_path; 318 319 is_dir = (op->create_options & FILE_DIRECTORY_FILE) ? 1 : 0; 320 321 /* 322 * If the object being created or opened is a directory 323 * the Disposition parameter must be one of FILE_CREATE, 324 * FILE_OPEN, or FILE_OPEN_IF 325 */ 326 if (is_dir) { 327 if ((op->create_disposition != FILE_CREATE) && 328 (op->create_disposition != FILE_OPEN_IF) && 329 (op->create_disposition != FILE_OPEN)) { 330 smbsr_error(sr, NT_STATUS_INVALID_PARAMETER, 331 ERRDOS, ERROR_INVALID_ACCESS); 332 return (NT_STATUS_INVALID_PARAMETER); 333 } 334 } 335 336 if (op->desired_access & MAXIMUM_ALLOWED) { 337 max_requested = 1; 338 op->desired_access &= ~MAXIMUM_ALLOWED; 339 } 340 op->desired_access = smb_access_generic_to_file(op->desired_access); 341 342 if (sr->session->s_file_cnt >= SMB_SESSION_OFILE_MAX) { 343 ASSERT(sr->uid_user); 344 cmn_err(CE_NOTE, "smbd[%s\\%s]: %s", sr->uid_user->u_domain, 345 sr->uid_user->u_name, 346 xlate_nt_status(NT_STATUS_TOO_MANY_OPENED_FILES)); 347 348 smbsr_error(sr, NT_STATUS_TOO_MANY_OPENED_FILES, 349 ERRDOS, ERROR_TOO_MANY_OPEN_FILES); 350 return (NT_STATUS_TOO_MANY_OPENED_FILES); 351 } 352 353 /* This must be NULL at this point */ 354 sr->fid_ofile = NULL; 355 356 op->devstate = 0; 357 358 switch (sr->tid_tree->t_res_type & STYPE_MASK) { 359 case STYPE_DISKTREE: 360 break; 361 362 case STYPE_IPC: 363 /* 364 * No further processing for IPC, we need to either 365 * raise an exception or return success here. 366 */ 367 if ((status = smb_opipe_open(sr)) != NT_STATUS_SUCCESS) 368 smbsr_error(sr, status, 0, 0); 369 return (status); 370 371 default: 372 smbsr_error(sr, NT_STATUS_BAD_DEVICE_TYPE, 373 ERRDOS, ERROR_BAD_DEV_TYPE); 374 return (NT_STATUS_BAD_DEVICE_TYPE); 375 } 376 377 smb_pathname_init(sr, pn, pn->pn_path); 378 if (!smb_pathname_validate(sr, pn)) 379 return (sr->smb_error.status); 380 381 if (strlen(pn->pn_path) >= MAXPATHLEN) { 382 smbsr_error(sr, 0, ERRSRV, ERRfilespecs); 383 return (NT_STATUS_NAME_TOO_LONG); 384 } 385 386 if (is_dir) { 387 if (!smb_validate_dirname(sr, pn)) 388 return (sr->smb_error.status); 389 } else { 390 if (!smb_validate_object_name(sr, pn)) 391 return (sr->smb_error.status); 392 } 393 394 cur_node = op->fqi.fq_dnode ? 395 op->fqi.fq_dnode : sr->tid_tree->t_snode; 396 397 /* 398 * if no path or filename are specified the stream should be 399 * created on cur_node 400 */ 401 if (!is_dir && !pn->pn_pname && !pn->pn_fname && pn->pn_sname) { 402 403 /* can't currently create a stream on the tree root */ 404 if (cur_node == sr->tid_tree->t_snode) { 405 smbsr_error(sr, NT_STATUS_ACCESS_DENIED, ERRDOS, 406 ERROR_ACCESS_DENIED); 407 return (NT_STATUS_ACCESS_DENIED); 408 } 409 410 (void) snprintf(op->fqi.fq_last_comp, 411 sizeof (op->fqi.fq_last_comp), 412 "%s%s", cur_node->od_name, pn->pn_sname); 413 414 op->fqi.fq_dnode = cur_node->n_dnode; 415 smb_node_ref(op->fqi.fq_dnode); 416 } else { 417 if (rc = smb_pathname_reduce(sr, sr->user_cr, pn->pn_path, 418 sr->tid_tree->t_snode, cur_node, &op->fqi.fq_dnode, 419 op->fqi.fq_last_comp)) { 420 smbsr_errno(sr, rc); 421 return (sr->smb_error.status); 422 } 423 } 424 425 /* 426 * If the access mask has only DELETE set (ignore 427 * FILE_READ_ATTRIBUTES), then assume that this 428 * is a request to delete the link (if a link) 429 * and do not follow links. Otherwise, follow 430 * the link to the target. 431 */ 432 if ((op->desired_access & ~FILE_READ_ATTRIBUTES) == DELETE) 433 lookup_flags &= ~SMB_FOLLOW_LINKS; 434 435 rc = smb_fsop_lookup_name(sr, kcred, lookup_flags, 436 sr->tid_tree->t_snode, op->fqi.fq_dnode, op->fqi.fq_last_comp, 437 &op->fqi.fq_fnode); 438 439 if (rc == 0) { 440 last_comp_found = B_TRUE; 441 rc = smb_node_getattr(sr, op->fqi.fq_fnode, 442 &op->fqi.fq_fattr); 443 if (rc != 0) { 444 smb_node_release(op->fqi.fq_fnode); 445 smb_node_release(op->fqi.fq_dnode); 446 smbsr_error(sr, NT_STATUS_INTERNAL_ERROR, 447 ERRDOS, ERROR_INTERNAL_ERROR); 448 return (sr->smb_error.status); 449 } 450 } else if (rc == ENOENT) { 451 last_comp_found = B_FALSE; 452 op->fqi.fq_fnode = NULL; 453 rc = 0; 454 } else { 455 smb_node_release(op->fqi.fq_dnode); 456 smbsr_errno(sr, rc); 457 return (sr->smb_error.status); 458 } 459 460 461 /* 462 * The uniq_fid is a CIFS-server-wide unique identifier for an ofile 463 * which is used to uniquely identify open instances for the 464 * VFS share reservation and POSIX locks. 465 */ 466 467 uniq_fid = SMB_UNIQ_FID(); 468 469 if (last_comp_found) { 470 471 if ((op->fqi.fq_fattr.sa_vattr.va_type != VREG) && 472 (op->fqi.fq_fattr.sa_vattr.va_type != VDIR) && 473 (op->fqi.fq_fattr.sa_vattr.va_type != VLNK)) { 474 475 smb_node_release(op->fqi.fq_fnode); 476 smb_node_release(op->fqi.fq_dnode); 477 smbsr_error(sr, NT_STATUS_ACCESS_DENIED, ERRDOS, 478 ERRnoaccess); 479 return (NT_STATUS_ACCESS_DENIED); 480 } 481 482 node = op->fqi.fq_fnode; 483 dnode = op->fqi.fq_dnode; 484 485 /* 486 * Reject this request if either: 487 * - the target IS a directory and the client requires that 488 * it must NOT be (required by Lotus Notes) 489 * - the target is NOT a directory and client requires that 490 * it MUST be. 491 */ 492 if (op->fqi.fq_fattr.sa_vattr.va_type == VDIR) { 493 if (op->create_options & FILE_NON_DIRECTORY_FILE) { 494 smb_node_release(node); 495 smb_node_release(dnode); 496 smbsr_error(sr, NT_STATUS_FILE_IS_A_DIRECTORY, 497 ERRDOS, ERROR_ACCESS_DENIED); 498 return (NT_STATUS_FILE_IS_A_DIRECTORY); 499 } 500 } else { 501 if ((op->create_options & FILE_DIRECTORY_FILE) || 502 (op->nt_flags & NT_CREATE_FLAG_OPEN_TARGET_DIR)) { 503 smb_node_release(node); 504 smb_node_release(dnode); 505 smbsr_error(sr, NT_STATUS_NOT_A_DIRECTORY, 506 ERRDOS, ERROR_DIRECTORY); 507 return (NT_STATUS_NOT_A_DIRECTORY); 508 } 509 } 510 511 /* 512 * No more open should be accepted when "Delete on close" 513 * flag is set. 514 */ 515 if (node->flags & NODE_FLAGS_DELETE_ON_CLOSE) { 516 smb_node_release(node); 517 smb_node_release(dnode); 518 smbsr_error(sr, NT_STATUS_DELETE_PENDING, 519 ERRDOS, ERROR_ACCESS_DENIED); 520 return (NT_STATUS_DELETE_PENDING); 521 } 522 523 /* 524 * Specified file already exists so the operation should fail. 525 */ 526 if (op->create_disposition == FILE_CREATE) { 527 smb_node_release(node); 528 smb_node_release(dnode); 529 smbsr_error(sr, NT_STATUS_OBJECT_NAME_COLLISION, 530 ERRDOS, ERROR_FILE_EXISTS); 531 return (NT_STATUS_OBJECT_NAME_COLLISION); 532 } 533 534 /* 535 * Windows seems to check read-only access before file 536 * sharing check. 537 * 538 * Check to see if the file is currently readonly (irrespective 539 * of whether this open will make it readonly). 540 */ 541 if (SMB_PATHFILE_IS_READONLY(sr, node)) { 542 /* Files data only */ 543 if (!smb_node_is_dir(node)) { 544 if (op->desired_access & (FILE_WRITE_DATA | 545 FILE_APPEND_DATA)) { 546 smb_node_release(node); 547 smb_node_release(dnode); 548 smbsr_error(sr, NT_STATUS_ACCESS_DENIED, 549 ERRDOS, ERRnoaccess); 550 return (NT_STATUS_ACCESS_DENIED); 551 } 552 } 553 } 554 555 if (smb_oplock_conflict(node, sr->session, op)) 556 (void) smb_oplock_break(node, sr->session, B_FALSE); 557 558 smb_node_wrlock(node); 559 560 if ((op->create_disposition == FILE_SUPERSEDE) || 561 (op->create_disposition == FILE_OVERWRITE_IF) || 562 (op->create_disposition == FILE_OVERWRITE)) { 563 564 if ((!(op->desired_access & 565 (FILE_WRITE_DATA | FILE_APPEND_DATA | 566 FILE_WRITE_ATTRIBUTES | FILE_WRITE_EA))) || 567 (!smb_sattr_check(op->fqi.fq_fattr.sa_dosattr, 568 op->dattr))) { 569 smb_node_unlock(node); 570 smb_node_release(node); 571 smb_node_release(dnode); 572 smbsr_error(sr, NT_STATUS_ACCESS_DENIED, 573 ERRDOS, ERRnoaccess); 574 return (NT_STATUS_ACCESS_DENIED); 575 } 576 } 577 578 status = smb_fsop_shrlock(sr->user_cr, node, uniq_fid, 579 op->desired_access, op->share_access); 580 581 if (status == NT_STATUS_SHARING_VIOLATION) { 582 smb_node_unlock(node); 583 smb_node_release(node); 584 smb_node_release(dnode); 585 return (status); 586 } 587 588 status = smb_fsop_access(sr, sr->user_cr, node, 589 op->desired_access); 590 591 if (status != NT_STATUS_SUCCESS) { 592 smb_fsop_unshrlock(sr->user_cr, node, uniq_fid); 593 594 smb_node_unlock(node); 595 smb_node_release(node); 596 smb_node_release(dnode); 597 598 if (status == NT_STATUS_PRIVILEGE_NOT_HELD) { 599 smbsr_error(sr, status, 600 ERRDOS, ERROR_PRIVILEGE_NOT_HELD); 601 return (status); 602 } else { 603 smbsr_error(sr, NT_STATUS_ACCESS_DENIED, 604 ERRDOS, ERROR_ACCESS_DENIED); 605 return (NT_STATUS_ACCESS_DENIED); 606 } 607 } 608 609 switch (op->create_disposition) { 610 case FILE_SUPERSEDE: 611 case FILE_OVERWRITE_IF: 612 case FILE_OVERWRITE: 613 if (smb_node_is_dir(node)) { 614 smb_fsop_unshrlock(sr->user_cr, node, uniq_fid); 615 smb_node_unlock(node); 616 smb_node_release(node); 617 smb_node_release(dnode); 618 smbsr_error(sr, NT_STATUS_ACCESS_DENIED, 619 ERRDOS, ERROR_ACCESS_DENIED); 620 return (NT_STATUS_ACCESS_DENIED); 621 } 622 623 op->dattr |= FILE_ATTRIBUTE_ARCHIVE; 624 /* Don't apply readonly bit until smb_ofile_close */ 625 if (op->dattr & FILE_ATTRIBUTE_READONLY) { 626 op->created_readonly = B_TRUE; 627 op->dattr &= ~FILE_ATTRIBUTE_READONLY; 628 } 629 630 bzero(&new_attr, sizeof (new_attr)); 631 new_attr.sa_dosattr = op->dattr; 632 new_attr.sa_vattr.va_size = op->dsize; 633 new_attr.sa_mask = SMB_AT_DOSATTR | SMB_AT_SIZE; 634 rc = smb_fsop_setattr(sr, sr->user_cr, node, &new_attr); 635 if (rc != 0) { 636 smb_fsop_unshrlock(sr->user_cr, node, uniq_fid); 637 smb_node_unlock(node); 638 smb_node_release(node); 639 smb_node_release(dnode); 640 smbsr_errno(sr, rc); 641 return (sr->smb_error.status); 642 } 643 644 /* 645 * If file is being replaced, remove existing streams 646 */ 647 if (SMB_IS_STREAM(node) == 0) { 648 rc = smb_fsop_remove_streams(sr, sr->user_cr, 649 node); 650 if (rc != 0) { 651 smb_fsop_unshrlock(sr->user_cr, node, 652 uniq_fid); 653 smb_node_unlock(node); 654 smb_node_release(node); 655 smb_node_release(dnode); 656 return (sr->smb_error.status); 657 } 658 } 659 660 op->action_taken = SMB_OACT_TRUNCATED; 661 break; 662 663 default: 664 /* 665 * FILE_OPEN or FILE_OPEN_IF. 666 */ 667 op->action_taken = SMB_OACT_OPENED; 668 break; 669 } 670 } else { 671 /* Last component was not found. */ 672 dnode = op->fqi.fq_dnode; 673 674 if (is_dir == 0) 675 is_stream = smb_is_stream_name(pn->pn_path); 676 677 if ((op->create_disposition == FILE_OPEN) || 678 (op->create_disposition == FILE_OVERWRITE)) { 679 smb_node_release(dnode); 680 smbsr_error(sr, NT_STATUS_OBJECT_NAME_NOT_FOUND, 681 ERRDOS, ERROR_FILE_NOT_FOUND); 682 return (NT_STATUS_OBJECT_NAME_NOT_FOUND); 683 } 684 685 if (smb_is_invalid_filename(pn->pn_fname)) { 686 smb_node_release(dnode); 687 smbsr_error(sr, NT_STATUS_OBJECT_NAME_INVALID, 688 ERRDOS, ERROR_INVALID_NAME); 689 return (NT_STATUS_OBJECT_NAME_INVALID); 690 } 691 692 /* 693 * lock the parent dir node in case another create 694 * request to the same parent directory comes in. 695 */ 696 smb_node_wrlock(dnode); 697 698 /* Don't apply readonly bit until smb_ofile_close */ 699 if (op->dattr & FILE_ATTRIBUTE_READONLY) { 700 op->dattr &= ~FILE_ATTRIBUTE_READONLY; 701 op->created_readonly = B_TRUE; 702 } 703 704 bzero(&new_attr, sizeof (new_attr)); 705 if ((op->crtime.tv_sec != 0) && 706 (op->crtime.tv_sec != UINT_MAX)) { 707 708 new_attr.sa_mask |= SMB_AT_CRTIME; 709 new_attr.sa_crtime = op->crtime; 710 } 711 712 if (is_dir == 0) { 713 op->dattr |= FILE_ATTRIBUTE_ARCHIVE; 714 new_attr.sa_dosattr = op->dattr; 715 new_attr.sa_vattr.va_type = VREG; 716 new_attr.sa_vattr.va_mode = is_stream ? S_IRUSR : 717 S_IRUSR | S_IRGRP | S_IROTH | 718 S_IWUSR | S_IWGRP | S_IWOTH; 719 new_attr.sa_mask |= 720 SMB_AT_DOSATTR | SMB_AT_TYPE | SMB_AT_MODE; 721 722 if (op->dsize) { 723 new_attr.sa_vattr.va_size = op->dsize; 724 new_attr.sa_mask |= SMB_AT_SIZE; 725 } 726 727 rc = smb_fsop_create(sr, sr->user_cr, dnode, 728 op->fqi.fq_last_comp, &new_attr, &op->fqi.fq_fnode); 729 730 if (rc != 0) { 731 smb_node_unlock(dnode); 732 smb_node_release(dnode); 733 smbsr_errno(sr, rc); 734 return (sr->smb_error.status); 735 } 736 737 node = op->fqi.fq_fnode; 738 smb_node_wrlock(node); 739 740 status = smb_fsop_shrlock(sr->user_cr, node, uniq_fid, 741 op->desired_access, op->share_access); 742 743 if (status == NT_STATUS_SHARING_VIOLATION) { 744 smb_node_unlock(node); 745 smb_delete_new_object(sr); 746 smb_node_release(node); 747 smb_node_unlock(dnode); 748 smb_node_release(dnode); 749 return (status); 750 } 751 } else { 752 op->dattr |= FILE_ATTRIBUTE_DIRECTORY; 753 new_attr.sa_dosattr = op->dattr; 754 new_attr.sa_vattr.va_type = VDIR; 755 new_attr.sa_vattr.va_mode = 0777; 756 new_attr.sa_mask |= 757 SMB_AT_DOSATTR | SMB_AT_TYPE | SMB_AT_MODE; 758 759 rc = smb_fsop_mkdir(sr, sr->user_cr, dnode, 760 op->fqi.fq_last_comp, &new_attr, &op->fqi.fq_fnode); 761 if (rc != 0) { 762 smb_node_unlock(dnode); 763 smb_node_release(dnode); 764 smbsr_errno(sr, rc); 765 return (sr->smb_error.status); 766 } 767 768 node = op->fqi.fq_fnode; 769 smb_node_wrlock(node); 770 } 771 772 created = B_TRUE; 773 op->action_taken = SMB_OACT_CREATED; 774 } 775 776 if (max_requested) { 777 smb_fsop_eaccess(sr, sr->user_cr, node, &max_allowed); 778 op->desired_access |= max_allowed; 779 } 780 781 status = NT_STATUS_SUCCESS; 782 783 of = smb_ofile_open(sr->tid_tree, node, sr->smb_pid, op, SMB_FTYPE_DISK, 784 uniq_fid, &err); 785 if (of == NULL) { 786 smbsr_error(sr, err.status, err.errcls, err.errcode); 787 status = err.status; 788 } 789 790 if (status == NT_STATUS_SUCCESS) { 791 if (!smb_tree_is_connected(sr->tid_tree)) { 792 smbsr_error(sr, 0, ERRSRV, ERRinvnid); 793 status = NT_STATUS_UNSUCCESSFUL; 794 } 795 } 796 797 /* 798 * This MUST be done after ofile creation, so that explicitly 799 * set timestamps can be remembered on the ofile. 800 */ 801 if (status == NT_STATUS_SUCCESS) { 802 if ((rc = smb_set_open_timestamps(sr, of, created)) != 0) { 803 smbsr_errno(sr, rc); 804 status = sr->smb_error.status; 805 } 806 } 807 808 if (status == NT_STATUS_SUCCESS) { 809 if (smb_node_getattr(sr, node, &op->fqi.fq_fattr) != 0) { 810 smbsr_error(sr, NT_STATUS_INTERNAL_ERROR, 811 ERRDOS, ERROR_INTERNAL_ERROR); 812 status = NT_STATUS_INTERNAL_ERROR; 813 } 814 } 815 816 /* 817 * smb_fsop_unshrlock is a no-op if node is a directory 818 * smb_fsop_unshrlock is done in smb_ofile_close 819 */ 820 if (status != NT_STATUS_SUCCESS) { 821 if (of == NULL) { 822 smb_fsop_unshrlock(sr->user_cr, node, uniq_fid); 823 } else { 824 smb_ofile_close(of, 0); 825 smb_ofile_release(of); 826 } 827 if (created) 828 smb_delete_new_object(sr); 829 smb_node_unlock(node); 830 smb_node_release(node); 831 if (created) 832 smb_node_unlock(dnode); 833 smb_node_release(dnode); 834 return (status); 835 } 836 837 /* 838 * Propagate the write-through mode from the open params 839 * to the node: see the notes in the function header. 840 */ 841 if (sr->sr_cfg->skc_sync_enable || 842 (op->create_options & FILE_WRITE_THROUGH)) 843 node->flags |= NODE_FLAGS_WRITE_THROUGH; 844 845 /* 846 * Set up the fileid and dosattr in open_param for response 847 */ 848 op->fileid = op->fqi.fq_fattr.sa_vattr.va_nodeid; 849 op->dattr = op->fqi.fq_fattr.sa_dosattr; 850 851 /* 852 * Set up the file type in open_param for the response 853 */ 854 op->ftype = SMB_FTYPE_DISK; 855 sr->smb_fid = of->f_fid; 856 sr->fid_ofile = of; 857 858 smb_node_unlock(node); 859 if (created) 860 smb_node_unlock(dnode); 861 862 if (op->fqi.fq_fattr.sa_vattr.va_type == VREG) { 863 smb_oplock_acquire(node, of, op); 864 op->dsize = op->fqi.fq_fattr.sa_vattr.va_size; 865 } else { /* VDIR or VLNK */ 866 op->op_oplock_level = SMB_OPLOCK_NONE; 867 op->dsize = 0; 868 } 869 870 smb_node_release(node); 871 smb_node_release(dnode); 872 873 return (NT_STATUS_SUCCESS); 874 } 875 876 /* 877 * smb_set_open_timestamps 878 * 879 * Last write time: 880 * - If the last_write time specified in the open params is not 0 or -1, 881 * use it as file's mtime. This will be considered an explicitly set 882 * timestamps, not reset by subsequent writes. 883 * 884 * Opening existing file (not directory): 885 * - If opening an existing file for overwrite set initial ATIME, MTIME 886 * & CTIME to now. (This is achieved by setting them as pending then forcing 887 * an smb_node_setattr() to apply pending times.) 888 * 889 * - Note If opening an existing file NOT for overwrite, windows would 890 * set the atime on file close, however setting the atime would cause 891 * the ARCHIVE attribute to be set, which does not occur on windows, 892 * so we do not do the atime update. 893 * 894 * Returns: errno 895 */ 896 static int 897 smb_set_open_timestamps(smb_request_t *sr, smb_ofile_t *of, boolean_t created) 898 { 899 int rc = 0; 900 open_param_t *op = &sr->arg.open; 901 smb_node_t *node = of->f_node; 902 boolean_t existing_file, set_times; 903 smb_attr_t attr; 904 905 bzero(&attr, sizeof (smb_attr_t)); 906 set_times = B_FALSE; 907 908 if ((op->mtime.tv_sec != 0) && (op->mtime.tv_sec != UINT_MAX)) { 909 attr.sa_mask = SMB_AT_MTIME; 910 attr.sa_vattr.va_mtime = op->mtime; 911 set_times = B_TRUE; 912 } 913 914 existing_file = !(created || smb_node_is_dir(node)); 915 if (existing_file) { 916 switch (op->create_disposition) { 917 case FILE_SUPERSEDE: 918 case FILE_OVERWRITE_IF: 919 case FILE_OVERWRITE: 920 smb_ofile_set_write_time_pending(of); 921 set_times = B_TRUE; 922 break; 923 default: 924 break; 925 } 926 } 927 928 if (set_times) 929 rc = smb_node_setattr(sr, node, sr->user_cr, of, &attr); 930 931 return (rc); 932 } 933 934 /* 935 * This function is used to delete a newly created object (file or 936 * directory) if an error occurs after creation of the object. 937 */ 938 static void 939 smb_delete_new_object(smb_request_t *sr) 940 { 941 open_param_t *op = &sr->arg.open; 942 smb_fqi_t *fqi = &(op->fqi); 943 uint32_t flags = 0; 944 945 if (SMB_TREE_IS_CASEINSENSITIVE(sr)) 946 flags |= SMB_IGNORE_CASE; 947 if (SMB_TREE_SUPPORTS_CATIA(sr)) 948 flags |= SMB_CATIA; 949 950 if (op->create_options & FILE_DIRECTORY_FILE) 951 (void) smb_fsop_rmdir(sr, sr->user_cr, fqi->fq_dnode, 952 fqi->fq_last_comp, flags); 953 else 954 (void) smb_fsop_remove(sr, sr->user_cr, fqi->fq_dnode, 955 fqi->fq_last_comp, flags); 956 } 957