1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * SMB1 (CIFS) version specific operations 4 * 5 * Copyright (c) 2012, Jeff Layton <jlayton@redhat.com> 6 */ 7 8 #include <linux/pagemap.h> 9 #include <linux/vfs.h> 10 #include <uapi/linux/magic.h> 11 #include "cifsglob.h" 12 #include "cifsproto.h" 13 #include "cifs_debug.h" 14 #include "cifspdu.h" 15 #include "cifs_unicode.h" 16 #include "fs_context.h" 17 18 /* 19 * An NT cancel request header looks just like the original request except: 20 * 21 * The Command is SMB_COM_NT_CANCEL 22 * The WordCount is zeroed out 23 * The ByteCount is zeroed out 24 * 25 * This function mangles an existing request buffer into a 26 * SMB_COM_NT_CANCEL request and then sends it. 27 */ 28 static int 29 send_nt_cancel(struct TCP_Server_Info *server, struct smb_rqst *rqst, 30 struct mid_q_entry *mid) 31 { 32 int rc = 0; 33 struct smb_hdr *in_buf = (struct smb_hdr *)rqst->rq_iov[0].iov_base; 34 35 /* -4 for RFC1001 length and +2 for BCC field */ 36 in_buf->smb_buf_length = cpu_to_be32(sizeof(struct smb_hdr) - 4 + 2); 37 in_buf->Command = SMB_COM_NT_CANCEL; 38 in_buf->WordCount = 0; 39 put_bcc(0, in_buf); 40 41 cifs_server_lock(server); 42 rc = cifs_sign_smb(in_buf, server, &mid->sequence_number); 43 if (rc) { 44 cifs_server_unlock(server); 45 return rc; 46 } 47 48 /* 49 * The response to this call was already factored into the sequence 50 * number when the call went out, so we must adjust it back downward 51 * after signing here. 52 */ 53 --server->sequence_number; 54 rc = smb_send(server, in_buf, be32_to_cpu(in_buf->smb_buf_length)); 55 if (rc < 0) 56 server->sequence_number--; 57 58 cifs_server_unlock(server); 59 60 cifs_dbg(FYI, "issued NT_CANCEL for mid %u, rc = %d\n", 61 get_mid(in_buf), rc); 62 63 return rc; 64 } 65 66 static bool 67 cifs_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2) 68 { 69 return ob1->fid.netfid == ob2->fid.netfid; 70 } 71 72 static unsigned int 73 cifs_read_data_offset(char *buf) 74 { 75 READ_RSP *rsp = (READ_RSP *)buf; 76 return le16_to_cpu(rsp->DataOffset); 77 } 78 79 static unsigned int 80 cifs_read_data_length(char *buf, bool in_remaining) 81 { 82 READ_RSP *rsp = (READ_RSP *)buf; 83 /* It's a bug reading remaining data for SMB1 packets */ 84 WARN_ON(in_remaining); 85 return (le16_to_cpu(rsp->DataLengthHigh) << 16) + 86 le16_to_cpu(rsp->DataLength); 87 } 88 89 static struct mid_q_entry * 90 cifs_find_mid(struct TCP_Server_Info *server, char *buffer) 91 { 92 struct smb_hdr *buf = (struct smb_hdr *)buffer; 93 struct mid_q_entry *mid; 94 95 spin_lock(&server->mid_lock); 96 list_for_each_entry(mid, &server->pending_mid_q, qhead) { 97 if (compare_mid(mid->mid, buf) && 98 mid->mid_state == MID_REQUEST_SUBMITTED && 99 le16_to_cpu(mid->command) == buf->Command) { 100 kref_get(&mid->refcount); 101 spin_unlock(&server->mid_lock); 102 return mid; 103 } 104 } 105 spin_unlock(&server->mid_lock); 106 return NULL; 107 } 108 109 static void 110 cifs_add_credits(struct TCP_Server_Info *server, 111 const struct cifs_credits *credits, const int optype) 112 { 113 spin_lock(&server->req_lock); 114 server->credits += credits->value; 115 server->in_flight--; 116 spin_unlock(&server->req_lock); 117 wake_up(&server->request_q); 118 } 119 120 static void 121 cifs_set_credits(struct TCP_Server_Info *server, const int val) 122 { 123 spin_lock(&server->req_lock); 124 server->credits = val; 125 server->oplocks = val > 1 ? enable_oplocks : false; 126 spin_unlock(&server->req_lock); 127 } 128 129 static int * 130 cifs_get_credits_field(struct TCP_Server_Info *server, const int optype) 131 { 132 return &server->credits; 133 } 134 135 static unsigned int 136 cifs_get_credits(struct mid_q_entry *mid) 137 { 138 return 1; 139 } 140 141 /* 142 * Find a free multiplex id (SMB mid). Otherwise there could be 143 * mid collisions which might cause problems, demultiplexing the 144 * wrong response to this request. Multiplex ids could collide if 145 * one of a series requests takes much longer than the others, or 146 * if a very large number of long lived requests (byte range 147 * locks or FindNotify requests) are pending. No more than 148 * 64K-1 requests can be outstanding at one time. If no 149 * mids are available, return zero. A future optimization 150 * could make the combination of mids and uid the key we use 151 * to demultiplex on (rather than mid alone). 152 * In addition to the above check, the cifs demultiplex 153 * code already used the command code as a secondary 154 * check of the frame and if signing is negotiated the 155 * response would be discarded if the mid were the same 156 * but the signature was wrong. Since the mid is not put in the 157 * pending queue until later (when it is about to be dispatched) 158 * we do have to limit the number of outstanding requests 159 * to somewhat less than 64K-1 although it is hard to imagine 160 * so many threads being in the vfs at one time. 161 */ 162 static __u64 163 cifs_get_next_mid(struct TCP_Server_Info *server) 164 { 165 __u64 mid = 0; 166 __u16 last_mid, cur_mid; 167 bool collision, reconnect = false; 168 169 spin_lock(&server->mid_lock); 170 171 /* mid is 16 bit only for CIFS/SMB */ 172 cur_mid = (__u16)((server->CurrentMid) & 0xffff); 173 /* we do not want to loop forever */ 174 last_mid = cur_mid; 175 cur_mid++; 176 /* avoid 0xFFFF MID */ 177 if (cur_mid == 0xffff) 178 cur_mid++; 179 180 /* 181 * This nested loop looks more expensive than it is. 182 * In practice the list of pending requests is short, 183 * fewer than 50, and the mids are likely to be unique 184 * on the first pass through the loop unless some request 185 * takes longer than the 64 thousand requests before it 186 * (and it would also have to have been a request that 187 * did not time out). 188 */ 189 while (cur_mid != last_mid) { 190 struct mid_q_entry *mid_entry; 191 unsigned int num_mids; 192 193 collision = false; 194 if (cur_mid == 0) 195 cur_mid++; 196 197 num_mids = 0; 198 list_for_each_entry(mid_entry, &server->pending_mid_q, qhead) { 199 ++num_mids; 200 if (mid_entry->mid == cur_mid && 201 mid_entry->mid_state == MID_REQUEST_SUBMITTED) { 202 /* This mid is in use, try a different one */ 203 collision = true; 204 break; 205 } 206 } 207 208 /* 209 * if we have more than 32k mids in the list, then something 210 * is very wrong. Possibly a local user is trying to DoS the 211 * box by issuing long-running calls and SIGKILL'ing them. If 212 * we get to 2^16 mids then we're in big trouble as this 213 * function could loop forever. 214 * 215 * Go ahead and assign out the mid in this situation, but force 216 * an eventual reconnect to clean out the pending_mid_q. 217 */ 218 if (num_mids > 32768) 219 reconnect = true; 220 221 if (!collision) { 222 mid = (__u64)cur_mid; 223 server->CurrentMid = mid; 224 break; 225 } 226 cur_mid++; 227 } 228 spin_unlock(&server->mid_lock); 229 230 if (reconnect) { 231 cifs_signal_cifsd_for_reconnect(server, false); 232 } 233 234 return mid; 235 } 236 237 /* 238 return codes: 239 0 not a transact2, or all data present 240 >0 transact2 with that much data missing 241 -EINVAL invalid transact2 242 */ 243 static int 244 check2ndT2(char *buf) 245 { 246 struct smb_hdr *pSMB = (struct smb_hdr *)buf; 247 struct smb_t2_rsp *pSMBt; 248 int remaining; 249 __u16 total_data_size, data_in_this_rsp; 250 251 if (pSMB->Command != SMB_COM_TRANSACTION2) 252 return 0; 253 254 /* check for plausible wct, bcc and t2 data and parm sizes */ 255 /* check for parm and data offset going beyond end of smb */ 256 if (pSMB->WordCount != 10) { /* coalesce_t2 depends on this */ 257 cifs_dbg(FYI, "Invalid transact2 word count\n"); 258 return -EINVAL; 259 } 260 261 pSMBt = (struct smb_t2_rsp *)pSMB; 262 263 total_data_size = get_unaligned_le16(&pSMBt->t2_rsp.TotalDataCount); 264 data_in_this_rsp = get_unaligned_le16(&pSMBt->t2_rsp.DataCount); 265 266 if (total_data_size == data_in_this_rsp) 267 return 0; 268 else if (total_data_size < data_in_this_rsp) { 269 cifs_dbg(FYI, "total data %d smaller than data in frame %d\n", 270 total_data_size, data_in_this_rsp); 271 return -EINVAL; 272 } 273 274 remaining = total_data_size - data_in_this_rsp; 275 276 cifs_dbg(FYI, "missing %d bytes from transact2, check next response\n", 277 remaining); 278 if (total_data_size > CIFSMaxBufSize) { 279 cifs_dbg(VFS, "TotalDataSize %d is over maximum buffer %d\n", 280 total_data_size, CIFSMaxBufSize); 281 return -EINVAL; 282 } 283 return remaining; 284 } 285 286 static int 287 coalesce_t2(char *second_buf, struct smb_hdr *target_hdr) 288 { 289 struct smb_t2_rsp *pSMBs = (struct smb_t2_rsp *)second_buf; 290 struct smb_t2_rsp *pSMBt = (struct smb_t2_rsp *)target_hdr; 291 char *data_area_of_tgt; 292 char *data_area_of_src; 293 int remaining; 294 unsigned int byte_count, total_in_tgt; 295 __u16 tgt_total_cnt, src_total_cnt, total_in_src; 296 297 src_total_cnt = get_unaligned_le16(&pSMBs->t2_rsp.TotalDataCount); 298 tgt_total_cnt = get_unaligned_le16(&pSMBt->t2_rsp.TotalDataCount); 299 300 if (tgt_total_cnt != src_total_cnt) 301 cifs_dbg(FYI, "total data count of primary and secondary t2 differ source=%hu target=%hu\n", 302 src_total_cnt, tgt_total_cnt); 303 304 total_in_tgt = get_unaligned_le16(&pSMBt->t2_rsp.DataCount); 305 306 remaining = tgt_total_cnt - total_in_tgt; 307 308 if (remaining < 0) { 309 cifs_dbg(FYI, "Server sent too much data. tgt_total_cnt=%hu total_in_tgt=%u\n", 310 tgt_total_cnt, total_in_tgt); 311 return -EPROTO; 312 } 313 314 if (remaining == 0) { 315 /* nothing to do, ignore */ 316 cifs_dbg(FYI, "no more data remains\n"); 317 return 0; 318 } 319 320 total_in_src = get_unaligned_le16(&pSMBs->t2_rsp.DataCount); 321 if (remaining < total_in_src) 322 cifs_dbg(FYI, "transact2 2nd response contains too much data\n"); 323 324 /* find end of first SMB data area */ 325 data_area_of_tgt = (char *)&pSMBt->hdr.Protocol + 326 get_unaligned_le16(&pSMBt->t2_rsp.DataOffset); 327 328 /* validate target area */ 329 data_area_of_src = (char *)&pSMBs->hdr.Protocol + 330 get_unaligned_le16(&pSMBs->t2_rsp.DataOffset); 331 332 data_area_of_tgt += total_in_tgt; 333 334 total_in_tgt += total_in_src; 335 /* is the result too big for the field? */ 336 if (total_in_tgt > USHRT_MAX) { 337 cifs_dbg(FYI, "coalesced DataCount too large (%u)\n", 338 total_in_tgt); 339 return -EPROTO; 340 } 341 put_unaligned_le16(total_in_tgt, &pSMBt->t2_rsp.DataCount); 342 343 /* fix up the BCC */ 344 byte_count = get_bcc(target_hdr); 345 byte_count += total_in_src; 346 /* is the result too big for the field? */ 347 if (byte_count > USHRT_MAX) { 348 cifs_dbg(FYI, "coalesced BCC too large (%u)\n", byte_count); 349 return -EPROTO; 350 } 351 put_bcc(byte_count, target_hdr); 352 353 byte_count = be32_to_cpu(target_hdr->smb_buf_length); 354 byte_count += total_in_src; 355 /* don't allow buffer to overflow */ 356 if (byte_count > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) { 357 cifs_dbg(FYI, "coalesced BCC exceeds buffer size (%u)\n", 358 byte_count); 359 return -ENOBUFS; 360 } 361 target_hdr->smb_buf_length = cpu_to_be32(byte_count); 362 363 /* copy second buffer into end of first buffer */ 364 memcpy(data_area_of_tgt, data_area_of_src, total_in_src); 365 366 if (remaining != total_in_src) { 367 /* more responses to go */ 368 cifs_dbg(FYI, "waiting for more secondary responses\n"); 369 return 1; 370 } 371 372 /* we are done */ 373 cifs_dbg(FYI, "found the last secondary response\n"); 374 return 0; 375 } 376 377 static void 378 cifs_downgrade_oplock(struct TCP_Server_Info *server, 379 struct cifsInodeInfo *cinode, __u32 oplock, 380 unsigned int epoch, bool *purge_cache) 381 { 382 cifs_set_oplock_level(cinode, oplock); 383 } 384 385 static bool 386 cifs_check_trans2(struct mid_q_entry *mid, struct TCP_Server_Info *server, 387 char *buf, int malformed) 388 { 389 if (malformed) 390 return false; 391 if (check2ndT2(buf) <= 0) 392 return false; 393 mid->multiRsp = true; 394 if (mid->resp_buf) { 395 /* merge response - fix up 1st*/ 396 malformed = coalesce_t2(buf, mid->resp_buf); 397 if (malformed > 0) 398 return true; 399 /* All parts received or packet is malformed. */ 400 mid->multiEnd = true; 401 dequeue_mid(mid, malformed); 402 return true; 403 } 404 if (!server->large_buf) { 405 /*FIXME: switch to already allocated largebuf?*/ 406 cifs_dbg(VFS, "1st trans2 resp needs bigbuf\n"); 407 } else { 408 /* Have first buffer */ 409 mid->resp_buf = buf; 410 mid->large_buf = true; 411 server->bigbuf = NULL; 412 } 413 return true; 414 } 415 416 static bool 417 cifs_need_neg(struct TCP_Server_Info *server) 418 { 419 return server->maxBuf == 0; 420 } 421 422 static int 423 cifs_negotiate(const unsigned int xid, 424 struct cifs_ses *ses, 425 struct TCP_Server_Info *server) 426 { 427 int rc; 428 rc = CIFSSMBNegotiate(xid, ses, server); 429 if (rc == -EAGAIN) { 430 /* retry only once on 1st time connection */ 431 set_credits(server, 1); 432 rc = CIFSSMBNegotiate(xid, ses, server); 433 if (rc == -EAGAIN) 434 rc = -EHOSTDOWN; 435 } 436 return rc; 437 } 438 439 static unsigned int 440 cifs_negotiate_wsize(struct cifs_tcon *tcon, struct smb3_fs_context *ctx) 441 { 442 __u64 unix_cap = le64_to_cpu(tcon->fsUnixInfo.Capability); 443 struct TCP_Server_Info *server = tcon->ses->server; 444 unsigned int wsize; 445 446 /* start with specified wsize, or default */ 447 if (ctx->wsize) 448 wsize = ctx->wsize; 449 else if (tcon->unix_ext && (unix_cap & CIFS_UNIX_LARGE_WRITE_CAP)) 450 wsize = CIFS_DEFAULT_IOSIZE; 451 else 452 wsize = CIFS_DEFAULT_NON_POSIX_WSIZE; 453 454 /* can server support 24-bit write sizes? (via UNIX extensions) */ 455 if (!tcon->unix_ext || !(unix_cap & CIFS_UNIX_LARGE_WRITE_CAP)) 456 wsize = min_t(unsigned int, wsize, CIFS_MAX_RFC1002_WSIZE); 457 458 /* 459 * no CAP_LARGE_WRITE_X or is signing enabled without CAP_UNIX set? 460 * Limit it to max buffer offered by the server, minus the size of the 461 * WRITEX header, not including the 4 byte RFC1001 length. 462 */ 463 if (!(server->capabilities & CAP_LARGE_WRITE_X) || 464 (!(server->capabilities & CAP_UNIX) && server->sign)) 465 wsize = min_t(unsigned int, wsize, 466 server->maxBuf - sizeof(WRITE_REQ) + 4); 467 468 /* hard limit of CIFS_MAX_WSIZE */ 469 wsize = min_t(unsigned int, wsize, CIFS_MAX_WSIZE); 470 471 return wsize; 472 } 473 474 static unsigned int 475 cifs_negotiate_rsize(struct cifs_tcon *tcon, struct smb3_fs_context *ctx) 476 { 477 __u64 unix_cap = le64_to_cpu(tcon->fsUnixInfo.Capability); 478 struct TCP_Server_Info *server = tcon->ses->server; 479 unsigned int rsize, defsize; 480 481 /* 482 * Set default value... 483 * 484 * HACK alert! Ancient servers have very small buffers. Even though 485 * MS-CIFS indicates that servers are only limited by the client's 486 * bufsize for reads, testing against win98se shows that it throws 487 * INVALID_PARAMETER errors if you try to request too large a read. 488 * OS/2 just sends back short reads. 489 * 490 * If the server doesn't advertise CAP_LARGE_READ_X, then assume that 491 * it can't handle a read request larger than its MaxBufferSize either. 492 */ 493 if (tcon->unix_ext && (unix_cap & CIFS_UNIX_LARGE_READ_CAP)) 494 defsize = CIFS_DEFAULT_IOSIZE; 495 else if (server->capabilities & CAP_LARGE_READ_X) 496 defsize = CIFS_DEFAULT_NON_POSIX_RSIZE; 497 else 498 defsize = server->maxBuf - sizeof(READ_RSP); 499 500 rsize = ctx->rsize ? ctx->rsize : defsize; 501 502 /* 503 * no CAP_LARGE_READ_X? Then MS-CIFS states that we must limit this to 504 * the client's MaxBufferSize. 505 */ 506 if (!(server->capabilities & CAP_LARGE_READ_X)) 507 rsize = min_t(unsigned int, CIFSMaxBufSize, rsize); 508 509 /* hard limit of CIFS_MAX_RSIZE */ 510 rsize = min_t(unsigned int, rsize, CIFS_MAX_RSIZE); 511 512 return rsize; 513 } 514 515 static void 516 cifs_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon, 517 struct cifs_sb_info *cifs_sb) 518 { 519 CIFSSMBQFSDeviceInfo(xid, tcon); 520 CIFSSMBQFSAttributeInfo(xid, tcon); 521 } 522 523 static int 524 cifs_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon, 525 struct cifs_sb_info *cifs_sb, const char *full_path) 526 { 527 int rc; 528 FILE_ALL_INFO *file_info; 529 530 file_info = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL); 531 if (file_info == NULL) 532 return -ENOMEM; 533 534 rc = CIFSSMBQPathInfo(xid, tcon, full_path, file_info, 535 0 /* not legacy */, cifs_sb->local_nls, 536 cifs_remap(cifs_sb)); 537 538 if (rc == -EOPNOTSUPP || rc == -EINVAL) 539 rc = SMBQueryInformation(xid, tcon, full_path, file_info, 540 cifs_sb->local_nls, cifs_remap(cifs_sb)); 541 kfree(file_info); 542 return rc; 543 } 544 545 static int cifs_query_path_info(const unsigned int xid, struct cifs_tcon *tcon, 546 struct cifs_sb_info *cifs_sb, const char *full_path, 547 struct cifs_open_info_data *data, bool *adjustTZ, bool *symlink) 548 { 549 int rc; 550 FILE_ALL_INFO fi = {}; 551 552 *symlink = false; 553 554 /* could do find first instead but this returns more info */ 555 rc = CIFSSMBQPathInfo(xid, tcon, full_path, &fi, 0 /* not legacy */, cifs_sb->local_nls, 556 cifs_remap(cifs_sb)); 557 /* 558 * BB optimize code so we do not make the above call when server claims 559 * no NT SMB support and the above call failed at least once - set flag 560 * in tcon or mount. 561 */ 562 if ((rc == -EOPNOTSUPP) || (rc == -EINVAL)) { 563 rc = SMBQueryInformation(xid, tcon, full_path, &fi, cifs_sb->local_nls, 564 cifs_remap(cifs_sb)); 565 *adjustTZ = true; 566 } 567 568 if (!rc) { 569 int tmprc; 570 int oplock = 0; 571 struct cifs_fid fid; 572 struct cifs_open_parms oparms; 573 574 move_cifs_info_to_smb2(&data->fi, &fi); 575 576 if (!(le32_to_cpu(fi.Attributes) & ATTR_REPARSE)) 577 return 0; 578 579 oparms = (struct cifs_open_parms) { 580 .tcon = tcon, 581 .cifs_sb = cifs_sb, 582 .desired_access = FILE_READ_ATTRIBUTES, 583 .create_options = cifs_create_options(cifs_sb, 0), 584 .disposition = FILE_OPEN, 585 .path = full_path, 586 .fid = &fid, 587 }; 588 589 /* Need to check if this is a symbolic link or not */ 590 tmprc = CIFS_open(xid, &oparms, &oplock, NULL); 591 if (tmprc == -EOPNOTSUPP) 592 *symlink = true; 593 else if (tmprc == 0) 594 CIFSSMBClose(xid, tcon, fid.netfid); 595 } 596 597 return rc; 598 } 599 600 static int cifs_get_srv_inum(const unsigned int xid, struct cifs_tcon *tcon, 601 struct cifs_sb_info *cifs_sb, const char *full_path, 602 u64 *uniqueid, struct cifs_open_info_data *unused) 603 { 604 /* 605 * We can not use the IndexNumber field by default from Windows or 606 * Samba (in ALL_INFO buf) but we can request it explicitly. The SNIA 607 * CIFS spec claims that this value is unique within the scope of a 608 * share, and the windows docs hint that it's actually unique 609 * per-machine. 610 * 611 * There may be higher info levels that work but are there Windows 612 * server or network appliances for which IndexNumber field is not 613 * guaranteed unique? 614 */ 615 return CIFSGetSrvInodeNumber(xid, tcon, full_path, uniqueid, 616 cifs_sb->local_nls, 617 cifs_remap(cifs_sb)); 618 } 619 620 static int cifs_query_file_info(const unsigned int xid, struct cifs_tcon *tcon, 621 struct cifsFileInfo *cfile, struct cifs_open_info_data *data) 622 { 623 int rc; 624 FILE_ALL_INFO fi = {}; 625 626 if (cfile->symlink_target) { 627 data->symlink_target = kstrdup(cfile->symlink_target, GFP_KERNEL); 628 if (!data->symlink_target) 629 return -ENOMEM; 630 } 631 632 rc = CIFSSMBQFileInfo(xid, tcon, cfile->fid.netfid, &fi); 633 if (!rc) 634 move_cifs_info_to_smb2(&data->fi, &fi); 635 return rc; 636 } 637 638 static void 639 cifs_clear_stats(struct cifs_tcon *tcon) 640 { 641 atomic_set(&tcon->stats.cifs_stats.num_writes, 0); 642 atomic_set(&tcon->stats.cifs_stats.num_reads, 0); 643 atomic_set(&tcon->stats.cifs_stats.num_flushes, 0); 644 atomic_set(&tcon->stats.cifs_stats.num_oplock_brks, 0); 645 atomic_set(&tcon->stats.cifs_stats.num_opens, 0); 646 atomic_set(&tcon->stats.cifs_stats.num_posixopens, 0); 647 atomic_set(&tcon->stats.cifs_stats.num_posixmkdirs, 0); 648 atomic_set(&tcon->stats.cifs_stats.num_closes, 0); 649 atomic_set(&tcon->stats.cifs_stats.num_deletes, 0); 650 atomic_set(&tcon->stats.cifs_stats.num_mkdirs, 0); 651 atomic_set(&tcon->stats.cifs_stats.num_rmdirs, 0); 652 atomic_set(&tcon->stats.cifs_stats.num_renames, 0); 653 atomic_set(&tcon->stats.cifs_stats.num_t2renames, 0); 654 atomic_set(&tcon->stats.cifs_stats.num_ffirst, 0); 655 atomic_set(&tcon->stats.cifs_stats.num_fnext, 0); 656 atomic_set(&tcon->stats.cifs_stats.num_fclose, 0); 657 atomic_set(&tcon->stats.cifs_stats.num_hardlinks, 0); 658 atomic_set(&tcon->stats.cifs_stats.num_symlinks, 0); 659 atomic_set(&tcon->stats.cifs_stats.num_locks, 0); 660 atomic_set(&tcon->stats.cifs_stats.num_acl_get, 0); 661 atomic_set(&tcon->stats.cifs_stats.num_acl_set, 0); 662 } 663 664 static void 665 cifs_print_stats(struct seq_file *m, struct cifs_tcon *tcon) 666 { 667 seq_printf(m, " Oplocks breaks: %d", 668 atomic_read(&tcon->stats.cifs_stats.num_oplock_brks)); 669 seq_printf(m, "\nReads: %d Bytes: %llu", 670 atomic_read(&tcon->stats.cifs_stats.num_reads), 671 (long long)(tcon->bytes_read)); 672 seq_printf(m, "\nWrites: %d Bytes: %llu", 673 atomic_read(&tcon->stats.cifs_stats.num_writes), 674 (long long)(tcon->bytes_written)); 675 seq_printf(m, "\nFlushes: %d", 676 atomic_read(&tcon->stats.cifs_stats.num_flushes)); 677 seq_printf(m, "\nLocks: %d HardLinks: %d Symlinks: %d", 678 atomic_read(&tcon->stats.cifs_stats.num_locks), 679 atomic_read(&tcon->stats.cifs_stats.num_hardlinks), 680 atomic_read(&tcon->stats.cifs_stats.num_symlinks)); 681 seq_printf(m, "\nOpens: %d Closes: %d Deletes: %d", 682 atomic_read(&tcon->stats.cifs_stats.num_opens), 683 atomic_read(&tcon->stats.cifs_stats.num_closes), 684 atomic_read(&tcon->stats.cifs_stats.num_deletes)); 685 seq_printf(m, "\nPosix Opens: %d Posix Mkdirs: %d", 686 atomic_read(&tcon->stats.cifs_stats.num_posixopens), 687 atomic_read(&tcon->stats.cifs_stats.num_posixmkdirs)); 688 seq_printf(m, "\nMkdirs: %d Rmdirs: %d", 689 atomic_read(&tcon->stats.cifs_stats.num_mkdirs), 690 atomic_read(&tcon->stats.cifs_stats.num_rmdirs)); 691 seq_printf(m, "\nRenames: %d T2 Renames %d", 692 atomic_read(&tcon->stats.cifs_stats.num_renames), 693 atomic_read(&tcon->stats.cifs_stats.num_t2renames)); 694 seq_printf(m, "\nFindFirst: %d FNext %d FClose %d", 695 atomic_read(&tcon->stats.cifs_stats.num_ffirst), 696 atomic_read(&tcon->stats.cifs_stats.num_fnext), 697 atomic_read(&tcon->stats.cifs_stats.num_fclose)); 698 } 699 700 static void 701 cifs_mkdir_setinfo(struct inode *inode, const char *full_path, 702 struct cifs_sb_info *cifs_sb, struct cifs_tcon *tcon, 703 const unsigned int xid) 704 { 705 FILE_BASIC_INFO info; 706 struct cifsInodeInfo *cifsInode; 707 u32 dosattrs; 708 int rc; 709 710 memset(&info, 0, sizeof(info)); 711 cifsInode = CIFS_I(inode); 712 dosattrs = cifsInode->cifsAttrs|ATTR_READONLY; 713 info.Attributes = cpu_to_le32(dosattrs); 714 rc = CIFSSMBSetPathInfo(xid, tcon, full_path, &info, cifs_sb->local_nls, 715 cifs_sb); 716 if (rc == 0) 717 cifsInode->cifsAttrs = dosattrs; 718 } 719 720 static int cifs_open_file(const unsigned int xid, struct cifs_open_parms *oparms, __u32 *oplock, 721 void *buf) 722 { 723 struct cifs_open_info_data *data = buf; 724 FILE_ALL_INFO fi = {}; 725 int rc; 726 727 if (!(oparms->tcon->ses->capabilities & CAP_NT_SMBS)) 728 rc = SMBLegacyOpen(xid, oparms->tcon, oparms->path, 729 oparms->disposition, 730 oparms->desired_access, 731 oparms->create_options, 732 &oparms->fid->netfid, oplock, &fi, 733 oparms->cifs_sb->local_nls, 734 cifs_remap(oparms->cifs_sb)); 735 else 736 rc = CIFS_open(xid, oparms, oplock, &fi); 737 738 if (!rc && data) 739 move_cifs_info_to_smb2(&data->fi, &fi); 740 741 return rc; 742 } 743 744 static void 745 cifs_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock) 746 { 747 struct cifsInodeInfo *cinode = CIFS_I(d_inode(cfile->dentry)); 748 cfile->fid.netfid = fid->netfid; 749 cifs_set_oplock_level(cinode, oplock); 750 cinode->can_cache_brlcks = CIFS_CACHE_WRITE(cinode); 751 } 752 753 static void 754 cifs_close_file(const unsigned int xid, struct cifs_tcon *tcon, 755 struct cifs_fid *fid) 756 { 757 CIFSSMBClose(xid, tcon, fid->netfid); 758 } 759 760 static int 761 cifs_flush_file(const unsigned int xid, struct cifs_tcon *tcon, 762 struct cifs_fid *fid) 763 { 764 return CIFSSMBFlush(xid, tcon, fid->netfid); 765 } 766 767 static int 768 cifs_sync_read(const unsigned int xid, struct cifs_fid *pfid, 769 struct cifs_io_parms *parms, unsigned int *bytes_read, 770 char **buf, int *buf_type) 771 { 772 parms->netfid = pfid->netfid; 773 return CIFSSMBRead(xid, parms, bytes_read, buf, buf_type); 774 } 775 776 static int 777 cifs_sync_write(const unsigned int xid, struct cifs_fid *pfid, 778 struct cifs_io_parms *parms, unsigned int *written, 779 struct kvec *iov, unsigned long nr_segs) 780 { 781 782 parms->netfid = pfid->netfid; 783 return CIFSSMBWrite2(xid, parms, written, iov, nr_segs); 784 } 785 786 static int 787 smb_set_file_info(struct inode *inode, const char *full_path, 788 FILE_BASIC_INFO *buf, const unsigned int xid) 789 { 790 int oplock = 0; 791 int rc; 792 __u32 netpid; 793 struct cifs_fid fid; 794 struct cifs_open_parms oparms; 795 struct cifsFileInfo *open_file; 796 struct cifsInodeInfo *cinode = CIFS_I(inode); 797 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); 798 struct tcon_link *tlink = NULL; 799 struct cifs_tcon *tcon; 800 801 /* if the file is already open for write, just use that fileid */ 802 open_file = find_writable_file(cinode, FIND_WR_FSUID_ONLY); 803 if (open_file) { 804 fid.netfid = open_file->fid.netfid; 805 netpid = open_file->pid; 806 tcon = tlink_tcon(open_file->tlink); 807 goto set_via_filehandle; 808 } 809 810 tlink = cifs_sb_tlink(cifs_sb); 811 if (IS_ERR(tlink)) { 812 rc = PTR_ERR(tlink); 813 tlink = NULL; 814 goto out; 815 } 816 tcon = tlink_tcon(tlink); 817 818 rc = CIFSSMBSetPathInfo(xid, tcon, full_path, buf, cifs_sb->local_nls, 819 cifs_sb); 820 if (rc == 0) { 821 cinode->cifsAttrs = le32_to_cpu(buf->Attributes); 822 goto out; 823 } else if (rc != -EOPNOTSUPP && rc != -EINVAL) { 824 goto out; 825 } 826 827 oparms = (struct cifs_open_parms) { 828 .tcon = tcon, 829 .cifs_sb = cifs_sb, 830 .desired_access = SYNCHRONIZE | FILE_WRITE_ATTRIBUTES, 831 .create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR), 832 .disposition = FILE_OPEN, 833 .path = full_path, 834 .fid = &fid, 835 }; 836 837 cifs_dbg(FYI, "calling SetFileInfo since SetPathInfo for times not supported by this server\n"); 838 rc = CIFS_open(xid, &oparms, &oplock, NULL); 839 if (rc != 0) { 840 if (rc == -EIO) 841 rc = -EINVAL; 842 goto out; 843 } 844 845 netpid = current->tgid; 846 847 set_via_filehandle: 848 rc = CIFSSMBSetFileInfo(xid, tcon, buf, fid.netfid, netpid); 849 if (!rc) 850 cinode->cifsAttrs = le32_to_cpu(buf->Attributes); 851 852 if (open_file == NULL) 853 CIFSSMBClose(xid, tcon, fid.netfid); 854 else 855 cifsFileInfo_put(open_file); 856 out: 857 if (tlink != NULL) 858 cifs_put_tlink(tlink); 859 return rc; 860 } 861 862 static int 863 cifs_set_compression(const unsigned int xid, struct cifs_tcon *tcon, 864 struct cifsFileInfo *cfile) 865 { 866 return CIFSSMB_set_compression(xid, tcon, cfile->fid.netfid); 867 } 868 869 static int 870 cifs_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon, 871 const char *path, struct cifs_sb_info *cifs_sb, 872 struct cifs_fid *fid, __u16 search_flags, 873 struct cifs_search_info *srch_inf) 874 { 875 int rc; 876 877 rc = CIFSFindFirst(xid, tcon, path, cifs_sb, 878 &fid->netfid, search_flags, srch_inf, true); 879 if (rc) 880 cifs_dbg(FYI, "find first failed=%d\n", rc); 881 return rc; 882 } 883 884 static int 885 cifs_query_dir_next(const unsigned int xid, struct cifs_tcon *tcon, 886 struct cifs_fid *fid, __u16 search_flags, 887 struct cifs_search_info *srch_inf) 888 { 889 return CIFSFindNext(xid, tcon, fid->netfid, search_flags, srch_inf); 890 } 891 892 static int 893 cifs_close_dir(const unsigned int xid, struct cifs_tcon *tcon, 894 struct cifs_fid *fid) 895 { 896 return CIFSFindClose(xid, tcon, fid->netfid); 897 } 898 899 static int 900 cifs_oplock_response(struct cifs_tcon *tcon, __u64 persistent_fid, 901 __u64 volatile_fid, __u16 net_fid, struct cifsInodeInfo *cinode) 902 { 903 return CIFSSMBLock(0, tcon, net_fid, current->tgid, 0, 0, 0, 0, 904 LOCKING_ANDX_OPLOCK_RELEASE, false, CIFS_CACHE_READ(cinode) ? 1 : 0); 905 } 906 907 static int 908 cifs_queryfs(const unsigned int xid, struct cifs_tcon *tcon, 909 struct cifs_sb_info *cifs_sb, struct kstatfs *buf) 910 { 911 int rc = -EOPNOTSUPP; 912 913 buf->f_type = CIFS_SUPER_MAGIC; 914 915 /* 916 * We could add a second check for a QFS Unix capability bit 917 */ 918 if ((tcon->ses->capabilities & CAP_UNIX) && 919 (CIFS_POSIX_EXTENSIONS & le64_to_cpu(tcon->fsUnixInfo.Capability))) 920 rc = CIFSSMBQFSPosixInfo(xid, tcon, buf); 921 922 /* 923 * Only need to call the old QFSInfo if failed on newer one, 924 * e.g. by OS/2. 925 **/ 926 if (rc && (tcon->ses->capabilities & CAP_NT_SMBS)) 927 rc = CIFSSMBQFSInfo(xid, tcon, buf); 928 929 /* 930 * Some old Windows servers also do not support level 103, retry with 931 * older level one if old server failed the previous call or we 932 * bypassed it because we detected that this was an older LANMAN sess 933 */ 934 if (rc) 935 rc = SMBOldQFSInfo(xid, tcon, buf); 936 return rc; 937 } 938 939 static int 940 cifs_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset, 941 __u64 length, __u32 type, int lock, int unlock, bool wait) 942 { 943 return CIFSSMBLock(xid, tlink_tcon(cfile->tlink), cfile->fid.netfid, 944 current->tgid, length, offset, unlock, lock, 945 (__u8)type, wait, 0); 946 } 947 948 static int 949 cifs_unix_dfs_readlink(const unsigned int xid, struct cifs_tcon *tcon, 950 const unsigned char *searchName, char **symlinkinfo, 951 const struct nls_table *nls_codepage) 952 { 953 #ifdef CONFIG_CIFS_DFS_UPCALL 954 int rc; 955 struct dfs_info3_param referral = {0}; 956 957 rc = get_dfs_path(xid, tcon->ses, searchName, nls_codepage, &referral, 958 0); 959 960 if (!rc) { 961 *symlinkinfo = kstrdup(referral.node_name, GFP_KERNEL); 962 free_dfs_info_param(&referral); 963 if (!*symlinkinfo) 964 rc = -ENOMEM; 965 } 966 return rc; 967 #else /* No DFS support */ 968 return -EREMOTE; 969 #endif 970 } 971 972 static int 973 cifs_query_symlink(const unsigned int xid, struct cifs_tcon *tcon, 974 struct cifs_sb_info *cifs_sb, const char *full_path, 975 char **target_path, bool is_reparse_point) 976 { 977 int rc; 978 int oplock = 0; 979 struct cifs_fid fid; 980 struct cifs_open_parms oparms; 981 982 cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path); 983 984 if (is_reparse_point) { 985 cifs_dbg(VFS, "reparse points not handled for SMB1 symlinks\n"); 986 return -EOPNOTSUPP; 987 } 988 989 /* Check for unix extensions */ 990 if (cap_unix(tcon->ses)) { 991 rc = CIFSSMBUnixQuerySymLink(xid, tcon, full_path, target_path, 992 cifs_sb->local_nls, 993 cifs_remap(cifs_sb)); 994 if (rc == -EREMOTE) 995 rc = cifs_unix_dfs_readlink(xid, tcon, full_path, 996 target_path, 997 cifs_sb->local_nls); 998 999 goto out; 1000 } 1001 1002 oparms = (struct cifs_open_parms) { 1003 .tcon = tcon, 1004 .cifs_sb = cifs_sb, 1005 .desired_access = FILE_READ_ATTRIBUTES, 1006 .create_options = cifs_create_options(cifs_sb, 1007 OPEN_REPARSE_POINT), 1008 .disposition = FILE_OPEN, 1009 .path = full_path, 1010 .fid = &fid, 1011 }; 1012 1013 rc = CIFS_open(xid, &oparms, &oplock, NULL); 1014 if (rc) 1015 goto out; 1016 1017 rc = CIFSSMBQuerySymLink(xid, tcon, fid.netfid, target_path, 1018 cifs_sb->local_nls); 1019 if (rc) 1020 goto out_close; 1021 1022 convert_delimiter(*target_path, '/'); 1023 out_close: 1024 CIFSSMBClose(xid, tcon, fid.netfid); 1025 out: 1026 if (!rc) 1027 cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path); 1028 return rc; 1029 } 1030 1031 static bool 1032 cifs_is_read_op(__u32 oplock) 1033 { 1034 return oplock == OPLOCK_READ; 1035 } 1036 1037 static unsigned int 1038 cifs_wp_retry_size(struct inode *inode) 1039 { 1040 return CIFS_SB(inode->i_sb)->ctx->wsize; 1041 } 1042 1043 static bool 1044 cifs_dir_needs_close(struct cifsFileInfo *cfile) 1045 { 1046 return !cfile->srch_inf.endOfSearch && !cfile->invalidHandle; 1047 } 1048 1049 static bool 1050 cifs_can_echo(struct TCP_Server_Info *server) 1051 { 1052 if (server->tcpStatus == CifsGood) 1053 return true; 1054 1055 return false; 1056 } 1057 1058 static int 1059 cifs_make_node(unsigned int xid, struct inode *inode, 1060 struct dentry *dentry, struct cifs_tcon *tcon, 1061 const char *full_path, umode_t mode, dev_t dev) 1062 { 1063 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); 1064 struct inode *newinode = NULL; 1065 int rc = -EPERM; 1066 struct cifs_open_info_data buf = {}; 1067 struct cifs_io_parms io_parms; 1068 __u32 oplock = 0; 1069 struct cifs_fid fid; 1070 struct cifs_open_parms oparms; 1071 unsigned int bytes_written; 1072 struct win_dev *pdev; 1073 struct kvec iov[2]; 1074 1075 if (tcon->unix_ext) { 1076 /* 1077 * SMB1 Unix Extensions: requires server support but 1078 * works with all special files 1079 */ 1080 struct cifs_unix_set_info_args args = { 1081 .mode = mode & ~current_umask(), 1082 .ctime = NO_CHANGE_64, 1083 .atime = NO_CHANGE_64, 1084 .mtime = NO_CHANGE_64, 1085 .device = dev, 1086 }; 1087 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) { 1088 args.uid = current_fsuid(); 1089 args.gid = current_fsgid(); 1090 } else { 1091 args.uid = INVALID_UID; /* no change */ 1092 args.gid = INVALID_GID; /* no change */ 1093 } 1094 rc = CIFSSMBUnixSetPathInfo(xid, tcon, full_path, &args, 1095 cifs_sb->local_nls, 1096 cifs_remap(cifs_sb)); 1097 if (rc) 1098 return rc; 1099 1100 rc = cifs_get_inode_info_unix(&newinode, full_path, 1101 inode->i_sb, xid); 1102 1103 if (rc == 0) 1104 d_instantiate(dentry, newinode); 1105 return rc; 1106 } 1107 1108 /* 1109 * SMB1 SFU emulation: should work with all servers, but only 1110 * support block and char device (no socket & fifo) 1111 */ 1112 if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL)) 1113 return rc; 1114 1115 if (!S_ISCHR(mode) && !S_ISBLK(mode)) 1116 return rc; 1117 1118 cifs_dbg(FYI, "sfu compat create special file\n"); 1119 1120 oparms = (struct cifs_open_parms) { 1121 .tcon = tcon, 1122 .cifs_sb = cifs_sb, 1123 .desired_access = GENERIC_WRITE, 1124 .create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR | 1125 CREATE_OPTION_SPECIAL), 1126 .disposition = FILE_CREATE, 1127 .path = full_path, 1128 .fid = &fid, 1129 }; 1130 1131 if (tcon->ses->server->oplocks) 1132 oplock = REQ_OPLOCK; 1133 else 1134 oplock = 0; 1135 rc = tcon->ses->server->ops->open(xid, &oparms, &oplock, &buf); 1136 if (rc) 1137 return rc; 1138 1139 /* 1140 * BB Do not bother to decode buf since no local inode yet to put 1141 * timestamps in, but we can reuse it safely. 1142 */ 1143 1144 pdev = (struct win_dev *)&buf.fi; 1145 io_parms.pid = current->tgid; 1146 io_parms.tcon = tcon; 1147 io_parms.offset = 0; 1148 io_parms.length = sizeof(struct win_dev); 1149 iov[1].iov_base = &buf.fi; 1150 iov[1].iov_len = sizeof(struct win_dev); 1151 if (S_ISCHR(mode)) { 1152 memcpy(pdev->type, "IntxCHR", 8); 1153 pdev->major = cpu_to_le64(MAJOR(dev)); 1154 pdev->minor = cpu_to_le64(MINOR(dev)); 1155 rc = tcon->ses->server->ops->sync_write(xid, &fid, &io_parms, 1156 &bytes_written, iov, 1); 1157 } else if (S_ISBLK(mode)) { 1158 memcpy(pdev->type, "IntxBLK", 8); 1159 pdev->major = cpu_to_le64(MAJOR(dev)); 1160 pdev->minor = cpu_to_le64(MINOR(dev)); 1161 rc = tcon->ses->server->ops->sync_write(xid, &fid, &io_parms, 1162 &bytes_written, iov, 1); 1163 } 1164 tcon->ses->server->ops->close(xid, tcon, &fid); 1165 d_drop(dentry); 1166 1167 /* FIXME: add code here to set EAs */ 1168 1169 cifs_free_open_info(&buf); 1170 return rc; 1171 } 1172 1173 1174 1175 struct smb_version_operations smb1_operations = { 1176 .send_cancel = send_nt_cancel, 1177 .compare_fids = cifs_compare_fids, 1178 .setup_request = cifs_setup_request, 1179 .setup_async_request = cifs_setup_async_request, 1180 .check_receive = cifs_check_receive, 1181 .add_credits = cifs_add_credits, 1182 .set_credits = cifs_set_credits, 1183 .get_credits_field = cifs_get_credits_field, 1184 .get_credits = cifs_get_credits, 1185 .wait_mtu_credits = cifs_wait_mtu_credits, 1186 .get_next_mid = cifs_get_next_mid, 1187 .read_data_offset = cifs_read_data_offset, 1188 .read_data_length = cifs_read_data_length, 1189 .map_error = map_smb_to_linux_error, 1190 .find_mid = cifs_find_mid, 1191 .check_message = checkSMB, 1192 .dump_detail = cifs_dump_detail, 1193 .clear_stats = cifs_clear_stats, 1194 .print_stats = cifs_print_stats, 1195 .is_oplock_break = is_valid_oplock_break, 1196 .downgrade_oplock = cifs_downgrade_oplock, 1197 .check_trans2 = cifs_check_trans2, 1198 .need_neg = cifs_need_neg, 1199 .negotiate = cifs_negotiate, 1200 .negotiate_wsize = cifs_negotiate_wsize, 1201 .negotiate_rsize = cifs_negotiate_rsize, 1202 .sess_setup = CIFS_SessSetup, 1203 .logoff = CIFSSMBLogoff, 1204 .tree_connect = CIFSTCon, 1205 .tree_disconnect = CIFSSMBTDis, 1206 .get_dfs_refer = CIFSGetDFSRefer, 1207 .qfs_tcon = cifs_qfs_tcon, 1208 .is_path_accessible = cifs_is_path_accessible, 1209 .can_echo = cifs_can_echo, 1210 .query_path_info = cifs_query_path_info, 1211 .query_file_info = cifs_query_file_info, 1212 .get_srv_inum = cifs_get_srv_inum, 1213 .set_path_size = CIFSSMBSetEOF, 1214 .set_file_size = CIFSSMBSetFileSize, 1215 .set_file_info = smb_set_file_info, 1216 .set_compression = cifs_set_compression, 1217 .echo = CIFSSMBEcho, 1218 .mkdir = CIFSSMBMkDir, 1219 .mkdir_setinfo = cifs_mkdir_setinfo, 1220 .rmdir = CIFSSMBRmDir, 1221 .unlink = CIFSSMBDelFile, 1222 .rename_pending_delete = cifs_rename_pending_delete, 1223 .rename = CIFSSMBRename, 1224 .create_hardlink = CIFSCreateHardLink, 1225 .query_symlink = cifs_query_symlink, 1226 .open = cifs_open_file, 1227 .set_fid = cifs_set_fid, 1228 .close = cifs_close_file, 1229 .flush = cifs_flush_file, 1230 .async_readv = cifs_async_readv, 1231 .async_writev = cifs_async_writev, 1232 .sync_read = cifs_sync_read, 1233 .sync_write = cifs_sync_write, 1234 .query_dir_first = cifs_query_dir_first, 1235 .query_dir_next = cifs_query_dir_next, 1236 .close_dir = cifs_close_dir, 1237 .calc_smb_size = smbCalcSize, 1238 .oplock_response = cifs_oplock_response, 1239 .queryfs = cifs_queryfs, 1240 .mand_lock = cifs_mand_lock, 1241 .mand_unlock_range = cifs_unlock_range, 1242 .push_mand_locks = cifs_push_mandatory_locks, 1243 .query_mf_symlink = cifs_query_mf_symlink, 1244 .create_mf_symlink = cifs_create_mf_symlink, 1245 .is_read_op = cifs_is_read_op, 1246 .wp_retry_size = cifs_wp_retry_size, 1247 .dir_needs_close = cifs_dir_needs_close, 1248 .select_sectype = cifs_select_sectype, 1249 #ifdef CONFIG_CIFS_XATTR 1250 .query_all_EAs = CIFSSMBQAllEAs, 1251 .set_EA = CIFSSMBSetEA, 1252 #endif /* CIFS_XATTR */ 1253 .get_acl = get_cifs_acl, 1254 .get_acl_by_fid = get_cifs_acl_by_fid, 1255 .set_acl = set_cifs_acl, 1256 .make_node = cifs_make_node, 1257 }; 1258 1259 struct smb_version_values smb1_values = { 1260 .version_string = SMB1_VERSION_STRING, 1261 .protocol_id = SMB10_PROT_ID, 1262 .large_lock_type = LOCKING_ANDX_LARGE_FILES, 1263 .exclusive_lock_type = 0, 1264 .shared_lock_type = LOCKING_ANDX_SHARED_LOCK, 1265 .unlock_lock_type = 0, 1266 .header_preamble_size = 4, 1267 .header_size = sizeof(struct smb_hdr), 1268 .max_header_size = MAX_CIFS_HDR_SIZE, 1269 .read_rsp_size = sizeof(READ_RSP), 1270 .lock_cmd = cpu_to_le16(SMB_COM_LOCKING_ANDX), 1271 .cap_unix = CAP_UNIX, 1272 .cap_nt_find = CAP_NT_SMBS | CAP_NT_FIND, 1273 .cap_large_files = CAP_LARGE_FILES, 1274 .signing_enabled = SECMODE_SIGN_ENABLED, 1275 .signing_required = SECMODE_SIGN_REQUIRED, 1276 }; 1277