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   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 */
  28static int
  29send_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
  66static bool
  67cifs_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2)
  68{
  69	return ob1->fid.netfid == ob2->fid.netfid;
  70}
  71
  72static unsigned int
  73cifs_read_data_offset(char *buf)
  74{
  75	READ_RSP *rsp = (READ_RSP *)buf;
  76	return le16_to_cpu(rsp->DataOffset);
  77}
  78
  79static unsigned int
  80cifs_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
  89static struct mid_q_entry *
  90cifs_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
 109static void
 110cifs_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
 120static void
 121cifs_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
 129static int *
 130cifs_get_credits_field(struct TCP_Server_Info *server, const int optype)
 131{
 132	return &server->credits;
 133}
 134
 135static unsigned int
 136cifs_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 */
 162static __u64
 163cifs_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 */
 243static int
 244check2ndT2(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
 286static int
 287coalesce_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
 377static void
 378cifs_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
 385static bool
 386cifs_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
 416static bool
 417cifs_need_neg(struct TCP_Server_Info *server)
 418{
 419	return server->maxBuf == 0;
 420}
 421
 422static int
 423cifs_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
 439static unsigned int
 440cifs_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
 474static unsigned int
 475cifs_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
 515static void
 516cifs_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
 523static int
 524cifs_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
 545static 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.tcon = tcon;
 580		oparms.cifs_sb = cifs_sb;
 581		oparms.desired_access = FILE_READ_ATTRIBUTES;
 582		oparms.create_options = cifs_create_options(cifs_sb, 0);
 583		oparms.disposition = FILE_OPEN;
 584		oparms.path = full_path;
 585		oparms.fid = &fid;
 586		oparms.reconnect = false;
 587
 588		/* Need to check if this is a symbolic link or not */
 589		tmprc = CIFS_open(xid, &oparms, &oplock, NULL);
 590		if (tmprc == -EOPNOTSUPP)
 591			*symlink = true;
 592		else if (tmprc == 0)
 593			CIFSSMBClose(xid, tcon, fid.netfid);
 594	}
 595
 596	return rc;
 597}
 598
 599static int cifs_get_srv_inum(const unsigned int xid, struct cifs_tcon *tcon,
 600			     struct cifs_sb_info *cifs_sb, const char *full_path,
 601			     u64 *uniqueid, struct cifs_open_info_data *unused)
 602{
 603	/*
 604	 * We can not use the IndexNumber field by default from Windows or
 605	 * Samba (in ALL_INFO buf) but we can request it explicitly. The SNIA
 606	 * CIFS spec claims that this value is unique within the scope of a
 607	 * share, and the windows docs hint that it's actually unique
 608	 * per-machine.
 609	 *
 610	 * There may be higher info levels that work but are there Windows
 611	 * server or network appliances for which IndexNumber field is not
 612	 * guaranteed unique?
 613	 */
 614	return CIFSGetSrvInodeNumber(xid, tcon, full_path, uniqueid,
 615				     cifs_sb->local_nls,
 616				     cifs_remap(cifs_sb));
 617}
 618
 619static int cifs_query_file_info(const unsigned int xid, struct cifs_tcon *tcon,
 620				struct cifsFileInfo *cfile, struct cifs_open_info_data *data)
 621{
 622	int rc;
 623	FILE_ALL_INFO fi = {};
 624
 625	if (cfile->symlink_target) {
 626		data->symlink_target = kstrdup(cfile->symlink_target, GFP_KERNEL);
 627		if (!data->symlink_target)
 628			return -ENOMEM;
 629	}
 630
 631	rc = CIFSSMBQFileInfo(xid, tcon, cfile->fid.netfid, &fi);
 632	if (!rc)
 633		move_cifs_info_to_smb2(&data->fi, &fi);
 634	return rc;
 635}
 636
 637static void
 638cifs_clear_stats(struct cifs_tcon *tcon)
 639{
 640	atomic_set(&tcon->stats.cifs_stats.num_writes, 0);
 641	atomic_set(&tcon->stats.cifs_stats.num_reads, 0);
 642	atomic_set(&tcon->stats.cifs_stats.num_flushes, 0);
 643	atomic_set(&tcon->stats.cifs_stats.num_oplock_brks, 0);
 644	atomic_set(&tcon->stats.cifs_stats.num_opens, 0);
 645	atomic_set(&tcon->stats.cifs_stats.num_posixopens, 0);
 646	atomic_set(&tcon->stats.cifs_stats.num_posixmkdirs, 0);
 647	atomic_set(&tcon->stats.cifs_stats.num_closes, 0);
 648	atomic_set(&tcon->stats.cifs_stats.num_deletes, 0);
 649	atomic_set(&tcon->stats.cifs_stats.num_mkdirs, 0);
 650	atomic_set(&tcon->stats.cifs_stats.num_rmdirs, 0);
 651	atomic_set(&tcon->stats.cifs_stats.num_renames, 0);
 652	atomic_set(&tcon->stats.cifs_stats.num_t2renames, 0);
 653	atomic_set(&tcon->stats.cifs_stats.num_ffirst, 0);
 654	atomic_set(&tcon->stats.cifs_stats.num_fnext, 0);
 655	atomic_set(&tcon->stats.cifs_stats.num_fclose, 0);
 656	atomic_set(&tcon->stats.cifs_stats.num_hardlinks, 0);
 657	atomic_set(&tcon->stats.cifs_stats.num_symlinks, 0);
 658	atomic_set(&tcon->stats.cifs_stats.num_locks, 0);
 659	atomic_set(&tcon->stats.cifs_stats.num_acl_get, 0);
 660	atomic_set(&tcon->stats.cifs_stats.num_acl_set, 0);
 661}
 662
 663static void
 664cifs_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
 665{
 666	seq_printf(m, " Oplocks breaks: %d",
 667		   atomic_read(&tcon->stats.cifs_stats.num_oplock_brks));
 668	seq_printf(m, "\nReads:  %d Bytes: %llu",
 669		   atomic_read(&tcon->stats.cifs_stats.num_reads),
 670		   (long long)(tcon->bytes_read));
 671	seq_printf(m, "\nWrites: %d Bytes: %llu",
 672		   atomic_read(&tcon->stats.cifs_stats.num_writes),
 673		   (long long)(tcon->bytes_written));
 674	seq_printf(m, "\nFlushes: %d",
 675		   atomic_read(&tcon->stats.cifs_stats.num_flushes));
 676	seq_printf(m, "\nLocks: %d HardLinks: %d Symlinks: %d",
 677		   atomic_read(&tcon->stats.cifs_stats.num_locks),
 678		   atomic_read(&tcon->stats.cifs_stats.num_hardlinks),
 679		   atomic_read(&tcon->stats.cifs_stats.num_symlinks));
 680	seq_printf(m, "\nOpens: %d Closes: %d Deletes: %d",
 681		   atomic_read(&tcon->stats.cifs_stats.num_opens),
 682		   atomic_read(&tcon->stats.cifs_stats.num_closes),
 683		   atomic_read(&tcon->stats.cifs_stats.num_deletes));
 684	seq_printf(m, "\nPosix Opens: %d Posix Mkdirs: %d",
 685		   atomic_read(&tcon->stats.cifs_stats.num_posixopens),
 686		   atomic_read(&tcon->stats.cifs_stats.num_posixmkdirs));
 687	seq_printf(m, "\nMkdirs: %d Rmdirs: %d",
 688		   atomic_read(&tcon->stats.cifs_stats.num_mkdirs),
 689		   atomic_read(&tcon->stats.cifs_stats.num_rmdirs));
 690	seq_printf(m, "\nRenames: %d T2 Renames %d",
 691		   atomic_read(&tcon->stats.cifs_stats.num_renames),
 692		   atomic_read(&tcon->stats.cifs_stats.num_t2renames));
 693	seq_printf(m, "\nFindFirst: %d FNext %d FClose %d",
 694		   atomic_read(&tcon->stats.cifs_stats.num_ffirst),
 695		   atomic_read(&tcon->stats.cifs_stats.num_fnext),
 696		   atomic_read(&tcon->stats.cifs_stats.num_fclose));
 697}
 698
 699static void
 700cifs_mkdir_setinfo(struct inode *inode, const char *full_path,
 701		   struct cifs_sb_info *cifs_sb, struct cifs_tcon *tcon,
 702		   const unsigned int xid)
 703{
 704	FILE_BASIC_INFO info;
 705	struct cifsInodeInfo *cifsInode;
 706	u32 dosattrs;
 707	int rc;
 708
 709	memset(&info, 0, sizeof(info));
 710	cifsInode = CIFS_I(inode);
 711	dosattrs = cifsInode->cifsAttrs|ATTR_READONLY;
 712	info.Attributes = cpu_to_le32(dosattrs);
 713	rc = CIFSSMBSetPathInfo(xid, tcon, full_path, &info, cifs_sb->local_nls,
 714				cifs_sb);
 715	if (rc == 0)
 716		cifsInode->cifsAttrs = dosattrs;
 717}
 718
 719static int cifs_open_file(const unsigned int xid, struct cifs_open_parms *oparms, __u32 *oplock,
 720			  void *buf)
 721{
 722	struct cifs_open_info_data *data = buf;
 723	FILE_ALL_INFO fi = {};
 724	int rc;
 725
 726	if (!(oparms->tcon->ses->capabilities & CAP_NT_SMBS))
 727		rc = SMBLegacyOpen(xid, oparms->tcon, oparms->path,
 728				   oparms->disposition,
 729				   oparms->desired_access,
 730				   oparms->create_options,
 731				   &oparms->fid->netfid, oplock, &fi,
 732				   oparms->cifs_sb->local_nls,
 733				   cifs_remap(oparms->cifs_sb));
 734	else
 735		rc = CIFS_open(xid, oparms, oplock, &fi);
 736
 737	if (!rc && data)
 738		move_cifs_info_to_smb2(&data->fi, &fi);
 739
 740	return rc;
 741}
 742
 743static void
 744cifs_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock)
 745{
 746	struct cifsInodeInfo *cinode = CIFS_I(d_inode(cfile->dentry));
 747	cfile->fid.netfid = fid->netfid;
 748	cifs_set_oplock_level(cinode, oplock);
 749	cinode->can_cache_brlcks = CIFS_CACHE_WRITE(cinode);
 750}
 751
 752static void
 753cifs_close_file(const unsigned int xid, struct cifs_tcon *tcon,
 754		struct cifs_fid *fid)
 755{
 756	CIFSSMBClose(xid, tcon, fid->netfid);
 757}
 758
 759static int
 760cifs_flush_file(const unsigned int xid, struct cifs_tcon *tcon,
 761		struct cifs_fid *fid)
 762{
 763	return CIFSSMBFlush(xid, tcon, fid->netfid);
 764}
 765
 766static int
 767cifs_sync_read(const unsigned int xid, struct cifs_fid *pfid,
 768	       struct cifs_io_parms *parms, unsigned int *bytes_read,
 769	       char **buf, int *buf_type)
 770{
 771	parms->netfid = pfid->netfid;
 772	return CIFSSMBRead(xid, parms, bytes_read, buf, buf_type);
 773}
 774
 775static int
 776cifs_sync_write(const unsigned int xid, struct cifs_fid *pfid,
 777		struct cifs_io_parms *parms, unsigned int *written,
 778		struct kvec *iov, unsigned long nr_segs)
 779{
 780
 781	parms->netfid = pfid->netfid;
 782	return CIFSSMBWrite2(xid, parms, written, iov, nr_segs);
 783}
 784
 785static int
 786smb_set_file_info(struct inode *inode, const char *full_path,
 787		  FILE_BASIC_INFO *buf, const unsigned int xid)
 788{
 789	int oplock = 0;
 790	int rc;
 791	__u32 netpid;
 792	struct cifs_fid fid;
 793	struct cifs_open_parms oparms;
 794	struct cifsFileInfo *open_file;
 795	struct cifsInodeInfo *cinode = CIFS_I(inode);
 796	struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
 797	struct tcon_link *tlink = NULL;
 798	struct cifs_tcon *tcon;
 799
 800	/* if the file is already open for write, just use that fileid */
 801	open_file = find_writable_file(cinode, FIND_WR_FSUID_ONLY);
 802	if (open_file) {
 803		fid.netfid = open_file->fid.netfid;
 804		netpid = open_file->pid;
 805		tcon = tlink_tcon(open_file->tlink);
 806		goto set_via_filehandle;
 807	}
 808
 809	tlink = cifs_sb_tlink(cifs_sb);
 810	if (IS_ERR(tlink)) {
 811		rc = PTR_ERR(tlink);
 812		tlink = NULL;
 813		goto out;
 814	}
 815	tcon = tlink_tcon(tlink);
 816
 817	rc = CIFSSMBSetPathInfo(xid, tcon, full_path, buf, cifs_sb->local_nls,
 818				cifs_sb);
 819	if (rc == 0) {
 820		cinode->cifsAttrs = le32_to_cpu(buf->Attributes);
 821		goto out;
 822	} else if (rc != -EOPNOTSUPP && rc != -EINVAL) {
 823		goto out;
 824	}
 825
 826	oparms.tcon = tcon;
 827	oparms.cifs_sb = cifs_sb;
 828	oparms.desired_access = SYNCHRONIZE | FILE_WRITE_ATTRIBUTES;
 829	oparms.create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR);
 830	oparms.disposition = FILE_OPEN;
 831	oparms.path = full_path;
 832	oparms.fid = &fid;
 833	oparms.reconnect = false;
 834
 835	cifs_dbg(FYI, "calling SetFileInfo since SetPathInfo for times not supported by this server\n");
 836	rc = CIFS_open(xid, &oparms, &oplock, NULL);
 837	if (rc != 0) {
 838		if (rc == -EIO)
 839			rc = -EINVAL;
 840		goto out;
 841	}
 842
 843	netpid = current->tgid;
 844
 845set_via_filehandle:
 846	rc = CIFSSMBSetFileInfo(xid, tcon, buf, fid.netfid, netpid);
 847	if (!rc)
 848		cinode->cifsAttrs = le32_to_cpu(buf->Attributes);
 849
 850	if (open_file == NULL)
 851		CIFSSMBClose(xid, tcon, fid.netfid);
 852	else
 853		cifsFileInfo_put(open_file);
 854out:
 855	if (tlink != NULL)
 856		cifs_put_tlink(tlink);
 857	return rc;
 858}
 859
 860static int
 861cifs_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
 862		   struct cifsFileInfo *cfile)
 863{
 864	return CIFSSMB_set_compression(xid, tcon, cfile->fid.netfid);
 865}
 866
 867static int
 868cifs_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
 869		     const char *path, struct cifs_sb_info *cifs_sb,
 870		     struct cifs_fid *fid, __u16 search_flags,
 871		     struct cifs_search_info *srch_inf)
 872{
 873	int rc;
 874
 875	rc = CIFSFindFirst(xid, tcon, path, cifs_sb,
 876			   &fid->netfid, search_flags, srch_inf, true);
 877	if (rc)
 878		cifs_dbg(FYI, "find first failed=%d\n", rc);
 879	return rc;
 880}
 881
 882static int
 883cifs_query_dir_next(const unsigned int xid, struct cifs_tcon *tcon,
 884		    struct cifs_fid *fid, __u16 search_flags,
 885		    struct cifs_search_info *srch_inf)
 886{
 887	return CIFSFindNext(xid, tcon, fid->netfid, search_flags, srch_inf);
 888}
 889
 890static int
 891cifs_close_dir(const unsigned int xid, struct cifs_tcon *tcon,
 892	       struct cifs_fid *fid)
 893{
 894	return CIFSFindClose(xid, tcon, fid->netfid);
 895}
 896
 897static int
 898cifs_oplock_response(struct cifs_tcon *tcon, struct cifs_fid *fid,
 899		     struct cifsInodeInfo *cinode)
 900{
 901	return CIFSSMBLock(0, tcon, fid->netfid, current->tgid, 0, 0, 0, 0,
 902			   LOCKING_ANDX_OPLOCK_RELEASE, false,
 903			   CIFS_CACHE_READ(cinode) ? 1 : 0);
 904}
 905
 906static int
 907cifs_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
 908	     struct cifs_sb_info *cifs_sb, struct kstatfs *buf)
 909{
 910	int rc = -EOPNOTSUPP;
 911
 912	buf->f_type = CIFS_SUPER_MAGIC;
 913
 914	/*
 915	 * We could add a second check for a QFS Unix capability bit
 916	 */
 917	if ((tcon->ses->capabilities & CAP_UNIX) &&
 918	    (CIFS_POSIX_EXTENSIONS & le64_to_cpu(tcon->fsUnixInfo.Capability)))
 919		rc = CIFSSMBQFSPosixInfo(xid, tcon, buf);
 920
 921	/*
 922	 * Only need to call the old QFSInfo if failed on newer one,
 923	 * e.g. by OS/2.
 924	 **/
 925	if (rc && (tcon->ses->capabilities & CAP_NT_SMBS))
 926		rc = CIFSSMBQFSInfo(xid, tcon, buf);
 927
 928	/*
 929	 * Some old Windows servers also do not support level 103, retry with
 930	 * older level one if old server failed the previous call or we
 931	 * bypassed it because we detected that this was an older LANMAN sess
 932	 */
 933	if (rc)
 934		rc = SMBOldQFSInfo(xid, tcon, buf);
 935	return rc;
 936}
 937
 938static int
 939cifs_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset,
 940	       __u64 length, __u32 type, int lock, int unlock, bool wait)
 941{
 942	return CIFSSMBLock(xid, tlink_tcon(cfile->tlink), cfile->fid.netfid,
 943			   current->tgid, length, offset, unlock, lock,
 944			   (__u8)type, wait, 0);
 945}
 946
 947static int
 948cifs_unix_dfs_readlink(const unsigned int xid, struct cifs_tcon *tcon,
 949		       const unsigned char *searchName, char **symlinkinfo,
 950		       const struct nls_table *nls_codepage)
 951{
 952#ifdef CONFIG_CIFS_DFS_UPCALL
 953	int rc;
 954	struct dfs_info3_param referral = {0};
 955
 956	rc = get_dfs_path(xid, tcon->ses, searchName, nls_codepage, &referral,
 957			  0);
 958
 959	if (!rc) {
 960		*symlinkinfo = kstrdup(referral.node_name, GFP_KERNEL);
 961		free_dfs_info_param(&referral);
 962		if (!*symlinkinfo)
 963			rc = -ENOMEM;
 964	}
 965	return rc;
 966#else /* No DFS support */
 967	return -EREMOTE;
 968#endif
 969}
 970
 971static int
 972cifs_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
 973		   struct cifs_sb_info *cifs_sb, const char *full_path,
 974		   char **target_path, bool is_reparse_point)
 975{
 976	int rc;
 977	int oplock = 0;
 978	struct cifs_fid fid;
 979	struct cifs_open_parms oparms;
 980
 981	cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path);
 982
 983	if (is_reparse_point) {
 984		cifs_dbg(VFS, "reparse points not handled for SMB1 symlinks\n");
 985		return -EOPNOTSUPP;
 986	}
 987
 988	/* Check for unix extensions */
 989	if (cap_unix(tcon->ses)) {
 990		rc = CIFSSMBUnixQuerySymLink(xid, tcon, full_path, target_path,
 991					     cifs_sb->local_nls,
 992					     cifs_remap(cifs_sb));
 993		if (rc == -EREMOTE)
 994			rc = cifs_unix_dfs_readlink(xid, tcon, full_path,
 995						    target_path,
 996						    cifs_sb->local_nls);
 997
 998		goto out;
 999	}
1000
1001	oparms.tcon = tcon;
1002	oparms.cifs_sb = cifs_sb;
1003	oparms.desired_access = FILE_READ_ATTRIBUTES;
1004	oparms.create_options = cifs_create_options(cifs_sb,
1005						    OPEN_REPARSE_POINT);
1006	oparms.disposition = FILE_OPEN;
1007	oparms.path = full_path;
1008	oparms.fid = &fid;
1009	oparms.reconnect = false;
1010
1011	rc = CIFS_open(xid, &oparms, &oplock, NULL);
1012	if (rc)
1013		goto out;
1014
1015	rc = CIFSSMBQuerySymLink(xid, tcon, fid.netfid, target_path,
1016				 cifs_sb->local_nls);
1017	if (rc)
1018		goto out_close;
1019
1020	convert_delimiter(*target_path, '/');
1021out_close:
1022	CIFSSMBClose(xid, tcon, fid.netfid);
1023out:
1024	if (!rc)
1025		cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
1026	return rc;
1027}
1028
1029static bool
1030cifs_is_read_op(__u32 oplock)
1031{
1032	return oplock == OPLOCK_READ;
1033}
1034
1035static unsigned int
1036cifs_wp_retry_size(struct inode *inode)
1037{
1038	return CIFS_SB(inode->i_sb)->ctx->wsize;
1039}
1040
1041static bool
1042cifs_dir_needs_close(struct cifsFileInfo *cfile)
1043{
1044	return !cfile->srch_inf.endOfSearch && !cfile->invalidHandle;
1045}
1046
1047static bool
1048cifs_can_echo(struct TCP_Server_Info *server)
1049{
1050	if (server->tcpStatus == CifsGood)
1051		return true;
1052
1053	return false;
1054}
1055
1056static int
1057cifs_make_node(unsigned int xid, struct inode *inode,
1058	       struct dentry *dentry, struct cifs_tcon *tcon,
1059	       const char *full_path, umode_t mode, dev_t dev)
1060{
1061	struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
1062	struct inode *newinode = NULL;
1063	int rc = -EPERM;
1064	struct cifs_open_info_data buf = {};
1065	struct cifs_io_parms io_parms;
1066	__u32 oplock = 0;
1067	struct cifs_fid fid;
1068	struct cifs_open_parms oparms;
1069	unsigned int bytes_written;
1070	struct win_dev *pdev;
1071	struct kvec iov[2];
1072
1073	if (tcon->unix_ext) {
1074		/*
1075		 * SMB1 Unix Extensions: requires server support but
1076		 * works with all special files
1077		 */
1078		struct cifs_unix_set_info_args args = {
1079			.mode	= mode & ~current_umask(),
1080			.ctime	= NO_CHANGE_64,
1081			.atime	= NO_CHANGE_64,
1082			.mtime	= NO_CHANGE_64,
1083			.device	= dev,
1084		};
1085		if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
1086			args.uid = current_fsuid();
1087			args.gid = current_fsgid();
1088		} else {
1089			args.uid = INVALID_UID; /* no change */
1090			args.gid = INVALID_GID; /* no change */
1091		}
1092		rc = CIFSSMBUnixSetPathInfo(xid, tcon, full_path, &args,
1093					    cifs_sb->local_nls,
1094					    cifs_remap(cifs_sb));
1095		if (rc)
1096			return rc;
1097
1098		rc = cifs_get_inode_info_unix(&newinode, full_path,
1099					      inode->i_sb, xid);
1100
1101		if (rc == 0)
1102			d_instantiate(dentry, newinode);
1103		return rc;
1104	}
1105
1106	/*
1107	 * SMB1 SFU emulation: should work with all servers, but only
1108	 * support block and char device (no socket & fifo)
1109	 */
1110	if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL))
1111		return rc;
1112
1113	if (!S_ISCHR(mode) && !S_ISBLK(mode))
1114		return rc;
1115
1116	cifs_dbg(FYI, "sfu compat create special file\n");
1117
1118	oparms.tcon = tcon;
1119	oparms.cifs_sb = cifs_sb;
1120	oparms.desired_access = GENERIC_WRITE;
1121	oparms.create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR |
1122						    CREATE_OPTION_SPECIAL);
1123	oparms.disposition = FILE_CREATE;
1124	oparms.path = full_path;
1125	oparms.fid = &fid;
1126	oparms.reconnect = false;
1127
1128	if (tcon->ses->server->oplocks)
1129		oplock = REQ_OPLOCK;
1130	else
1131		oplock = 0;
1132	rc = tcon->ses->server->ops->open(xid, &oparms, &oplock, &buf);
1133	if (rc)
1134		return rc;
1135
1136	/*
1137	 * BB Do not bother to decode buf since no local inode yet to put
1138	 * timestamps in, but we can reuse it safely.
1139	 */
1140
1141	pdev = (struct win_dev *)&buf.fi;
1142	io_parms.pid = current->tgid;
1143	io_parms.tcon = tcon;
1144	io_parms.offset = 0;
1145	io_parms.length = sizeof(struct win_dev);
1146	iov[1].iov_base = &buf.fi;
1147	iov[1].iov_len = sizeof(struct win_dev);
1148	if (S_ISCHR(mode)) {
1149		memcpy(pdev->type, "IntxCHR", 8);
1150		pdev->major = cpu_to_le64(MAJOR(dev));
1151		pdev->minor = cpu_to_le64(MINOR(dev));
1152		rc = tcon->ses->server->ops->sync_write(xid, &fid, &io_parms,
1153							&bytes_written, iov, 1);
1154	} else if (S_ISBLK(mode)) {
1155		memcpy(pdev->type, "IntxBLK", 8);
1156		pdev->major = cpu_to_le64(MAJOR(dev));
1157		pdev->minor = cpu_to_le64(MINOR(dev));
1158		rc = tcon->ses->server->ops->sync_write(xid, &fid, &io_parms,
1159							&bytes_written, iov, 1);
1160	}
1161	tcon->ses->server->ops->close(xid, tcon, &fid);
1162	d_drop(dentry);
1163
1164	/* FIXME: add code here to set EAs */
1165
1166	cifs_free_open_info(&buf);
1167	return rc;
1168}
1169
1170
1171
1172struct smb_version_operations smb1_operations = {
1173	.send_cancel = send_nt_cancel,
1174	.compare_fids = cifs_compare_fids,
1175	.setup_request = cifs_setup_request,
1176	.setup_async_request = cifs_setup_async_request,
1177	.check_receive = cifs_check_receive,
1178	.add_credits = cifs_add_credits,
1179	.set_credits = cifs_set_credits,
1180	.get_credits_field = cifs_get_credits_field,
1181	.get_credits = cifs_get_credits,
1182	.wait_mtu_credits = cifs_wait_mtu_credits,
1183	.get_next_mid = cifs_get_next_mid,
1184	.read_data_offset = cifs_read_data_offset,
1185	.read_data_length = cifs_read_data_length,
1186	.map_error = map_smb_to_linux_error,
1187	.find_mid = cifs_find_mid,
1188	.check_message = checkSMB,
1189	.dump_detail = cifs_dump_detail,
1190	.clear_stats = cifs_clear_stats,
1191	.print_stats = cifs_print_stats,
1192	.is_oplock_break = is_valid_oplock_break,
1193	.downgrade_oplock = cifs_downgrade_oplock,
1194	.check_trans2 = cifs_check_trans2,
1195	.need_neg = cifs_need_neg,
1196	.negotiate = cifs_negotiate,
1197	.negotiate_wsize = cifs_negotiate_wsize,
1198	.negotiate_rsize = cifs_negotiate_rsize,
1199	.sess_setup = CIFS_SessSetup,
1200	.logoff = CIFSSMBLogoff,
1201	.tree_connect = CIFSTCon,
1202	.tree_disconnect = CIFSSMBTDis,
1203	.get_dfs_refer = CIFSGetDFSRefer,
1204	.qfs_tcon = cifs_qfs_tcon,
1205	.is_path_accessible = cifs_is_path_accessible,
1206	.can_echo = cifs_can_echo,
1207	.query_path_info = cifs_query_path_info,
1208	.query_file_info = cifs_query_file_info,
1209	.get_srv_inum = cifs_get_srv_inum,
1210	.set_path_size = CIFSSMBSetEOF,
1211	.set_file_size = CIFSSMBSetFileSize,
1212	.set_file_info = smb_set_file_info,
1213	.set_compression = cifs_set_compression,
1214	.echo = CIFSSMBEcho,
1215	.mkdir = CIFSSMBMkDir,
1216	.mkdir_setinfo = cifs_mkdir_setinfo,
1217	.rmdir = CIFSSMBRmDir,
1218	.unlink = CIFSSMBDelFile,
1219	.rename_pending_delete = cifs_rename_pending_delete,
1220	.rename = CIFSSMBRename,
1221	.create_hardlink = CIFSCreateHardLink,
1222	.query_symlink = cifs_query_symlink,
1223	.open = cifs_open_file,
1224	.set_fid = cifs_set_fid,
1225	.close = cifs_close_file,
1226	.flush = cifs_flush_file,
1227	.async_readv = cifs_async_readv,
1228	.async_writev = cifs_async_writev,
1229	.sync_read = cifs_sync_read,
1230	.sync_write = cifs_sync_write,
1231	.query_dir_first = cifs_query_dir_first,
1232	.query_dir_next = cifs_query_dir_next,
1233	.close_dir = cifs_close_dir,
1234	.calc_smb_size = smbCalcSize,
1235	.oplock_response = cifs_oplock_response,
1236	.queryfs = cifs_queryfs,
1237	.mand_lock = cifs_mand_lock,
1238	.mand_unlock_range = cifs_unlock_range,
1239	.push_mand_locks = cifs_push_mandatory_locks,
1240	.query_mf_symlink = cifs_query_mf_symlink,
1241	.create_mf_symlink = cifs_create_mf_symlink,
1242	.is_read_op = cifs_is_read_op,
1243	.wp_retry_size = cifs_wp_retry_size,
1244	.dir_needs_close = cifs_dir_needs_close,
1245	.select_sectype = cifs_select_sectype,
1246#ifdef CONFIG_CIFS_XATTR
1247	.query_all_EAs = CIFSSMBQAllEAs,
1248	.set_EA = CIFSSMBSetEA,
1249#endif /* CIFS_XATTR */
1250	.get_acl = get_cifs_acl,
1251	.get_acl_by_fid = get_cifs_acl_by_fid,
1252	.set_acl = set_cifs_acl,
1253	.make_node = cifs_make_node,
1254};
1255
1256struct smb_version_values smb1_values = {
1257	.version_string = SMB1_VERSION_STRING,
1258	.protocol_id = SMB10_PROT_ID,
1259	.large_lock_type = LOCKING_ANDX_LARGE_FILES,
1260	.exclusive_lock_type = 0,
1261	.shared_lock_type = LOCKING_ANDX_SHARED_LOCK,
1262	.unlock_lock_type = 0,
1263	.header_preamble_size = 4,
1264	.header_size = sizeof(struct smb_hdr),
1265	.max_header_size = MAX_CIFS_HDR_SIZE,
1266	.read_rsp_size = sizeof(READ_RSP),
1267	.lock_cmd = cpu_to_le16(SMB_COM_LOCKING_ANDX),
1268	.cap_unix = CAP_UNIX,
1269	.cap_nt_find = CAP_NT_SMBS | CAP_NT_FIND,
1270	.cap_large_files = CAP_LARGE_FILES,
1271	.signing_enabled = SECMODE_SIGN_ENABLED,
1272	.signing_required = SECMODE_SIGN_REQUIRED,
1273};