[PATCH 5.15.y 1/2] cifs: SMB1 split: Create smb1proto.h for SMB1 declarations

[Sasha Levin]

From: David Howells <dhowells@xxxxxxxxxx>

[ Upstream commit 86c666506ea2c42649879eeac7f29e7bedef2f23 ]

Signed-off-by: David Howells <dhowells@xxxxxxxxxx>
cc: Steve French <sfrench@xxxxxxxxx>
cc: Paulo Alcantara <pc@xxxxxxxxxxxxx>
cc: Enzo Matsumiya <ematsumiya@xxxxxxx>
cc: linux-cifs@xxxxxxxxxxxxxxx
cc: linux-fsdevel@xxxxxxxxxxxxxxx
cc: linux-kernel@xxxxxxxxxxxxxxx
Acked-by: Enzo Matsumiya <ematsumiya@xxxxxxx>
Signed-off-by: Steve French <stfrench@xxxxxxxxxxxxx>

[ sashal: Reduced backport -- upstream 86c666506ea2c touches 3 file(s), this
  backport carries 5. Not backported here:
  fs/smb/client/cifsglob.h
  fs/smb/client/cifsproto.h
  fs/smb/client/smb1proto.h
  This note is generated from the file lists only; see the resolution record
  for the reasoning. ]

Stable-dep-of: 730d0bb19507 ("smb: client: fix UAF and buffer leak in cifs_check_trans2() for malformed secondary T2")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 fs/cifs/cifsglob.h            |    2 -
 fs/cifs/cifsproto.h           |   11 +-
 fs/cifs/smb1ops.c             | 1247 +-------------------------------
 fs/cifs/smb1proto.h           |   40 ++
 fs/smb/client/smb1transport.c | 1251 +++++++++++++++++++++++++++++++++
 5 files changed, 1293 insertions(+), 1258 deletions(-)
 create mode 100644 fs/cifs/smb1proto.h
 create mode 100644 fs/smb/client/smb1transport.c

diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index 9b08020634f19..3d585d191f766 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -1910,8 +1910,6 @@ extern mempool_t *cifs_mid_poolp;
 #define SMB1_VERSION_STRING	"1.0"
 #define SMB20_VERSION_STRING    "2.0"
 #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
-extern struct smb_version_operations smb1_operations;
-extern struct smb_version_values smb1_values;
 extern struct smb_version_operations smb20_operations;
 extern struct smb_version_values smb20_values;
 #endif /* CIFS_ALLOW_INSECURE_LEGACY */
diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h
index 5cfe41b2fe4ae..4d60551466a7c 100644
--- a/fs/cifs/cifsproto.h
+++ b/fs/cifs/cifsproto.h
@@ -12,6 +12,7 @@
 #ifdef CONFIG_CIFS_DFS_UPCALL
 #include "dfs_cache.h"
 #endif
+#include "smb1proto.h"
 
 struct statfs;
 struct smb_rqst;
@@ -379,16 +380,6 @@ extern int CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon,
 			      struct cifsFileInfo *cfile, __u64 size,
 			      bool set_allocation);
 
-struct cifs_unix_set_info_args {
-	__u64	ctime;
-	__u64	atime;
-	__u64	mtime;
-	__u64	mode;
-	kuid_t	uid;
-	kgid_t	gid;
-	dev_t	device;
-};
-
 extern int CIFSSMBUnixSetFileInfo(const unsigned int xid,
 				  struct cifs_tcon *tcon,
 				  const struct cifs_unix_set_info_args *args,
diff --git a/fs/cifs/smb1ops.c b/fs/cifs/smb1ops.c
index 41e468d06b5b0..155409a9b0ede 100644
--- a/fs/cifs/smb1ops.c
+++ b/fs/cifs/smb1ops.c
@@ -1,1247 +1,2 @@
 // SPDX-License-Identifier: GPL-2.0-only
-/*
- *  SMB1 (CIFS) version specific operations
- *
- *  Copyright (c) 2012, Jeff Layton <jlayton@xxxxxxxxxx>
- */
-
-#include <linux/pagemap.h>
-#include <linux/vfs.h>
-#include "cifsglob.h"
-#include "cifsproto.h"
-#include "cifs_debug.h"
-#include "cifspdu.h"
-#include "cifs_unicode.h"
-#include "fs_context.h"
-
-/*
- * An NT cancel request header looks just like the original request except:
- *
- * The Command is SMB_COM_NT_CANCEL
- * The WordCount is zeroed out
- * The ByteCount is zeroed out
- *
- * This function mangles an existing request buffer into a
- * SMB_COM_NT_CANCEL request and then sends it.
- */
-static int
-send_nt_cancel(struct TCP_Server_Info *server, struct smb_rqst *rqst,
-	       struct mid_q_entry *mid)
-{
-	int rc = 0;
-	struct smb_hdr *in_buf = (struct smb_hdr *)rqst->rq_iov[0].iov_base;
-
-	/* -4 for RFC1001 length and +2 for BCC field */
-	in_buf->smb_buf_length = cpu_to_be32(sizeof(struct smb_hdr) - 4  + 2);
-	in_buf->Command = SMB_COM_NT_CANCEL;
-	in_buf->WordCount = 0;
-	put_bcc(0, in_buf);
-
-	mutex_lock(&server->srv_mutex);
-	rc = cifs_sign_smb(in_buf, server, &mid->sequence_number);
-	if (rc) {
-		mutex_unlock(&server->srv_mutex);
-		return rc;
-	}
-
-	/*
-	 * The response to this call was already factored into the sequence
-	 * number when the call went out, so we must adjust it back downward
-	 * after signing here.
-	 */
-	--server->sequence_number;
-	rc = smb_send(server, in_buf, be32_to_cpu(in_buf->smb_buf_length));
-	if (rc < 0)
-		server->sequence_number--;
-
-	mutex_unlock(&server->srv_mutex);
-
-	cifs_dbg(FYI, "issued NT_CANCEL for mid %u, rc = %d\n",
-		 get_mid(in_buf), rc);
-
-	return rc;
-}
-
-static bool
-cifs_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2)
-{
-	return ob1->fid.netfid == ob2->fid.netfid;
-}
-
-static unsigned int
-cifs_read_data_offset(char *buf)
-{
-	READ_RSP *rsp = (READ_RSP *)buf;
-	return le16_to_cpu(rsp->DataOffset);
-}
-
-static unsigned int
-cifs_read_data_length(char *buf, bool in_remaining)
-{
-	READ_RSP *rsp = (READ_RSP *)buf;
-	/* It's a bug reading remaining data for SMB1 packets */
-	WARN_ON(in_remaining);
-	return (le16_to_cpu(rsp->DataLengthHigh) << 16) +
-	       le16_to_cpu(rsp->DataLength);
-}
-
-static struct mid_q_entry *
-cifs_find_mid(struct TCP_Server_Info *server, char *buffer)
-{
-	struct smb_hdr *buf = (struct smb_hdr *)buffer;
-	struct mid_q_entry *mid;
-
-	spin_lock(&GlobalMid_Lock);
-	list_for_each_entry(mid, &server->pending_mid_q, qhead) {
-		if (compare_mid(mid->mid, buf) &&
-		    mid->mid_state == MID_REQUEST_SUBMITTED &&
-		    le16_to_cpu(mid->command) == buf->Command) {
-			kref_get(&mid->refcount);
-			spin_unlock(&GlobalMid_Lock);
-			return mid;
-		}
-	}
-	spin_unlock(&GlobalMid_Lock);
-	return NULL;
-}
-
-static void
-cifs_add_credits(struct TCP_Server_Info *server,
-		 const struct cifs_credits *credits, const int optype)
-{
-	spin_lock(&server->req_lock);
-	server->credits += credits->value;
-	server->in_flight--;
-	spin_unlock(&server->req_lock);
-	wake_up(&server->request_q);
-}
-
-static void
-cifs_set_credits(struct TCP_Server_Info *server, const int val)
-{
-	spin_lock(&server->req_lock);
-	server->credits = val;
-	server->oplocks = val > 1 ? enable_oplocks : false;
-	spin_unlock(&server->req_lock);
-}
-
-static int *
-cifs_get_credits_field(struct TCP_Server_Info *server, const int optype)
-{
-	return &server->credits;
-}
-
-static unsigned int
-cifs_get_credits(struct mid_q_entry *mid)
-{
-	return 1;
-}
-
-/*
- * Find a free multiplex id (SMB mid). Otherwise there could be
- * mid collisions which might cause problems, demultiplexing the
- * wrong response to this request. Multiplex ids could collide if
- * one of a series requests takes much longer than the others, or
- * if a very large number of long lived requests (byte range
- * locks or FindNotify requests) are pending. No more than
- * 64K-1 requests can be outstanding at one time. If no
- * mids are available, return zero. A future optimization
- * could make the combination of mids and uid the key we use
- * to demultiplex on (rather than mid alone).
- * In addition to the above check, the cifs demultiplex
- * code already used the command code as a secondary
- * check of the frame and if signing is negotiated the
- * response would be discarded if the mid were the same
- * but the signature was wrong. Since the mid is not put in the
- * pending queue until later (when it is about to be dispatched)
- * we do have to limit the number of outstanding requests
- * to somewhat less than 64K-1 although it is hard to imagine
- * so many threads being in the vfs at one time.
- */
-static __u64
-cifs_get_next_mid(struct TCP_Server_Info *server)
-{
-	__u64 mid = 0;
-	__u16 last_mid, cur_mid;
-	bool collision;
-
-	spin_lock(&GlobalMid_Lock);
-
-	/* mid is 16 bit only for CIFS/SMB */
-	cur_mid = (__u16)((server->CurrentMid) & 0xffff);
-	/* we do not want to loop forever */
-	last_mid = cur_mid;
-	cur_mid++;
-	/* avoid 0xFFFF MID */
-	if (cur_mid == 0xffff)
-		cur_mid++;
-
-	/*
-	 * This nested loop looks more expensive than it is.
-	 * In practice the list of pending requests is short,
-	 * fewer than 50, and the mids are likely to be unique
-	 * on the first pass through the loop unless some request
-	 * takes longer than the 64 thousand requests before it
-	 * (and it would also have to have been a request that
-	 * did not time out).
-	 */
-	while (cur_mid != last_mid) {
-		struct mid_q_entry *mid_entry;
-		unsigned int num_mids;
-
-		collision = false;
-		if (cur_mid == 0)
-			cur_mid++;
-
-		num_mids = 0;
-		list_for_each_entry(mid_entry, &server->pending_mid_q, qhead) {
-			++num_mids;
-			if (mid_entry->mid == cur_mid &&
-			    mid_entry->mid_state == MID_REQUEST_SUBMITTED) {
-				/* This mid is in use, try a different one */
-				collision = true;
-				break;
-			}
-		}
-
-		/*
-		 * if we have more than 32k mids in the list, then something
-		 * is very wrong. Possibly a local user is trying to DoS the
-		 * box by issuing long-running calls and SIGKILL'ing them. If
-		 * we get to 2^16 mids then we're in big trouble as this
-		 * function could loop forever.
-		 *
-		 * Go ahead and assign out the mid in this situation, but force
-		 * an eventual reconnect to clean out the pending_mid_q.
-		 */
-		if (num_mids > 32768)
-			server->tcpStatus = CifsNeedReconnect;
-
-		if (!collision) {
-			mid = (__u64)cur_mid;
-			server->CurrentMid = mid;
-			break;
-		}
-		cur_mid++;
-	}
-	spin_unlock(&GlobalMid_Lock);
-	return mid;
-}
-
-/*
-	return codes:
-		0	not a transact2, or all data present
-		>0	transact2 with that much data missing
-		-EINVAL	invalid transact2
- */
-static int
-check2ndT2(char *buf)
-{
-	struct smb_hdr *pSMB = (struct smb_hdr *)buf;
-	struct smb_t2_rsp *pSMBt;
-	int remaining;
-	__u16 total_data_size, data_in_this_rsp;
-
-	if (pSMB->Command != SMB_COM_TRANSACTION2)
-		return 0;
-
-	/* check for plausible wct, bcc and t2 data and parm sizes */
-	/* check for parm and data offset going beyond end of smb */
-	if (pSMB->WordCount != 10) { /* coalesce_t2 depends on this */
-		cifs_dbg(FYI, "Invalid transact2 word count\n");
-		return -EINVAL;
-	}
-
-	pSMBt = (struct smb_t2_rsp *)pSMB;
-
-	total_data_size = get_unaligned_le16(&pSMBt->t2_rsp.TotalDataCount);
-	data_in_this_rsp = get_unaligned_le16(&pSMBt->t2_rsp.DataCount);
-
-	if (total_data_size == data_in_this_rsp)
-		return 0;
-	else if (total_data_size < data_in_this_rsp) {
-		cifs_dbg(FYI, "total data %d smaller than data in frame %d\n",
-			 total_data_size, data_in_this_rsp);
-		return -EINVAL;
-	}
-
-	remaining = total_data_size - data_in_this_rsp;
-
-	cifs_dbg(FYI, "missing %d bytes from transact2, check next response\n",
-		 remaining);
-	if (total_data_size > CIFSMaxBufSize) {
-		cifs_dbg(VFS, "TotalDataSize %d is over maximum buffer %d\n",
-			 total_data_size, CIFSMaxBufSize);
-		return -EINVAL;
-	}
-	return remaining;
-}
-
-static int
-coalesce_t2(char *second_buf, struct smb_hdr *target_hdr)
-{
-	struct smb_t2_rsp *pSMBs = (struct smb_t2_rsp *)second_buf;
-	struct smb_t2_rsp *pSMBt  = (struct smb_t2_rsp *)target_hdr;
-	char *data_area_of_tgt;
-	char *data_area_of_src;
-	int remaining;
-	unsigned int byte_count, total_in_tgt;
-	__u16 tgt_total_cnt, src_total_cnt, total_in_src;
-
-	src_total_cnt = get_unaligned_le16(&pSMBs->t2_rsp.TotalDataCount);
-	tgt_total_cnt = get_unaligned_le16(&pSMBt->t2_rsp.TotalDataCount);
-
-	if (tgt_total_cnt != src_total_cnt)
-		cifs_dbg(FYI, "total data count of primary and secondary t2 differ source=%hu target=%hu\n",
-			 src_total_cnt, tgt_total_cnt);
-
-	total_in_tgt = get_unaligned_le16(&pSMBt->t2_rsp.DataCount);
-
-	remaining = tgt_total_cnt - total_in_tgt;
-
-	if (remaining < 0) {
-		cifs_dbg(FYI, "Server sent too much data. tgt_total_cnt=%hu total_in_tgt=%u\n",
-			 tgt_total_cnt, total_in_tgt);
-		return -EPROTO;
-	}
-
-	if (remaining == 0) {
-		/* nothing to do, ignore */
-		cifs_dbg(FYI, "no more data remains\n");
-		return 0;
-	}
-
-	total_in_src = get_unaligned_le16(&pSMBs->t2_rsp.DataCount);
-	if (remaining < total_in_src)
-		cifs_dbg(FYI, "transact2 2nd response contains too much data\n");
-
-	/* find end of first SMB data area */
-	data_area_of_tgt = (char *)&pSMBt->hdr.Protocol +
-				get_unaligned_le16(&pSMBt->t2_rsp.DataOffset);
-
-	/* validate target area */
-	data_area_of_src = (char *)&pSMBs->hdr.Protocol +
-				get_unaligned_le16(&pSMBs->t2_rsp.DataOffset);
-
-	data_area_of_tgt += total_in_tgt;
-
-	total_in_tgt += total_in_src;
-	/* is the result too big for the field? */
-	if (total_in_tgt > USHRT_MAX) {
-		cifs_dbg(FYI, "coalesced DataCount too large (%u)\n",
-			 total_in_tgt);
-		return -EPROTO;
-	}
-	put_unaligned_le16(total_in_tgt, &pSMBt->t2_rsp.DataCount);
-
-	/* fix up the BCC */
-	byte_count = get_bcc(target_hdr);
-	byte_count += total_in_src;
-	/* is the result too big for the field? */
-	if (byte_count > USHRT_MAX) {
-		cifs_dbg(FYI, "coalesced BCC too large (%u)\n", byte_count);
-		return -EPROTO;
-	}
-	put_bcc(byte_count, target_hdr);
-
-	byte_count = be32_to_cpu(target_hdr->smb_buf_length);
-	byte_count += total_in_src;
-	/* don't allow buffer to overflow */
-	if (byte_count > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) {
-		cifs_dbg(FYI, "coalesced BCC exceeds buffer size (%u)\n",
-			 byte_count);
-		return -ENOBUFS;
-	}
-	target_hdr->smb_buf_length = cpu_to_be32(byte_count);
-
-	/* copy second buffer into end of first buffer */
-	memcpy(data_area_of_tgt, data_area_of_src, total_in_src);
-
-	if (remaining != total_in_src) {
-		/* more responses to go */
-		cifs_dbg(FYI, "waiting for more secondary responses\n");
-		return 1;
-	}
-
-	/* we are done */
-	cifs_dbg(FYI, "found the last secondary response\n");
-	return 0;
-}
-
-static void
-cifs_downgrade_oplock(struct TCP_Server_Info *server,
-		      struct cifsInodeInfo *cinode, __u32 oplock,
-		      unsigned int epoch, bool *purge_cache)
-{
-	cifs_set_oplock_level(cinode, oplock);
-}
-
-static bool
-cifs_check_trans2(struct mid_q_entry *mid, struct TCP_Server_Info *server,
-		  char *buf, int malformed)
-{
-	if (malformed)
-		return false;
-	if (check2ndT2(buf) <= 0)
-		return false;
-	mid->multiRsp = true;
-	if (mid->resp_buf) {
-		/* merge response - fix up 1st*/
-		malformed = coalesce_t2(buf, mid->resp_buf);
-		if (malformed > 0)
-			return true;
-		/* All parts received or packet is malformed. */
-		mid->multiEnd = true;
-		dequeue_mid(mid, malformed);
-		return true;
-	}
-	if (!server->large_buf) {
-		/*FIXME: switch to already allocated largebuf?*/
-		cifs_dbg(VFS, "1st trans2 resp needs bigbuf\n");
-	} else {
-		/* Have first buffer */
-		mid->resp_buf = buf;
-		mid->large_buf = true;
-		server->bigbuf = NULL;
-	}
-	return true;
-}
-
-static bool
-cifs_need_neg(struct TCP_Server_Info *server)
-{
-	return server->maxBuf == 0;
-}
-
-static int
-cifs_negotiate(const unsigned int xid, struct cifs_ses *ses)
-{
-	int rc;
-	rc = CIFSSMBNegotiate(xid, ses);
-	if (rc == -EAGAIN) {
-		/* retry only once on 1st time connection */
-		set_credits(ses->server, 1);
-		rc = CIFSSMBNegotiate(xid, ses);
-		if (rc == -EAGAIN)
-			rc = -EHOSTDOWN;
-	}
-	return rc;
-}
-
-static unsigned int
-cifs_negotiate_wsize(struct cifs_tcon *tcon, struct smb3_fs_context *ctx)
-{
-	__u64 unix_cap = le64_to_cpu(tcon->fsUnixInfo.Capability);
-	struct TCP_Server_Info *server = tcon->ses->server;
-	unsigned int wsize;
-
-	/* start with specified wsize, or default */
-	if (ctx->wsize)
-		wsize = ctx->wsize;
-	else if (tcon->unix_ext && (unix_cap & CIFS_UNIX_LARGE_WRITE_CAP))
-		wsize = CIFS_DEFAULT_IOSIZE;
-	else
-		wsize = CIFS_DEFAULT_NON_POSIX_WSIZE;
-
-	/* can server support 24-bit write sizes? (via UNIX extensions) */
-	if (!tcon->unix_ext || !(unix_cap & CIFS_UNIX_LARGE_WRITE_CAP))
-		wsize = min_t(unsigned int, wsize, CIFS_MAX_RFC1002_WSIZE);
-
-	/*
-	 * no CAP_LARGE_WRITE_X or is signing enabled without CAP_UNIX set?
-	 * Limit it to max buffer offered by the server, minus the size of the
-	 * WRITEX header, not including the 4 byte RFC1001 length.
-	 */
-	if (!(server->capabilities & CAP_LARGE_WRITE_X) ||
-	    (!(server->capabilities & CAP_UNIX) && server->sign))
-		wsize = min_t(unsigned int, wsize,
-				server->maxBuf - sizeof(WRITE_REQ) + 4);
-
-	/* hard limit of CIFS_MAX_WSIZE */
-	wsize = min_t(unsigned int, wsize, CIFS_MAX_WSIZE);
-
-	return wsize;
-}
-
-static unsigned int
-cifs_negotiate_rsize(struct cifs_tcon *tcon, struct smb3_fs_context *ctx)
-{
-	__u64 unix_cap = le64_to_cpu(tcon->fsUnixInfo.Capability);
-	struct TCP_Server_Info *server = tcon->ses->server;
-	unsigned int rsize, defsize;
-
-	/*
-	 * Set default value...
-	 *
-	 * HACK alert! Ancient servers have very small buffers. Even though
-	 * MS-CIFS indicates that servers are only limited by the client's
-	 * bufsize for reads, testing against win98se shows that it throws
-	 * INVALID_PARAMETER errors if you try to request too large a read.
-	 * OS/2 just sends back short reads.
-	 *
-	 * If the server doesn't advertise CAP_LARGE_READ_X, then assume that
-	 * it can't handle a read request larger than its MaxBufferSize either.
-	 */
-	if (tcon->unix_ext && (unix_cap & CIFS_UNIX_LARGE_READ_CAP))
-		defsize = CIFS_DEFAULT_IOSIZE;
-	else if (server->capabilities & CAP_LARGE_READ_X)
-		defsize = CIFS_DEFAULT_NON_POSIX_RSIZE;
-	else
-		defsize = server->maxBuf - sizeof(READ_RSP);
-
-	rsize = ctx->rsize ? ctx->rsize : defsize;
-
-	/*
-	 * no CAP_LARGE_READ_X? Then MS-CIFS states that we must limit this to
-	 * the client's MaxBufferSize.
-	 */
-	if (!(server->capabilities & CAP_LARGE_READ_X))
-		rsize = min_t(unsigned int, CIFSMaxBufSize, rsize);
-
-	/* hard limit of CIFS_MAX_RSIZE */
-	rsize = min_t(unsigned int, rsize, CIFS_MAX_RSIZE);
-
-	return rsize;
-}
-
-static void
-cifs_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon,
-	      struct cifs_sb_info *cifs_sb)
-{
-	CIFSSMBQFSDeviceInfo(xid, tcon);
-	CIFSSMBQFSAttributeInfo(xid, tcon);
-}
-
-static int
-cifs_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
-			struct cifs_sb_info *cifs_sb, const char *full_path)
-{
-	int rc;
-	FILE_ALL_INFO *file_info;
-
-	file_info = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
-	if (file_info == NULL)
-		return -ENOMEM;
-
-	rc = CIFSSMBQPathInfo(xid, tcon, full_path, file_info,
-			      0 /* not legacy */, cifs_sb->local_nls,
-			      cifs_remap(cifs_sb));
-
-	if (rc == -EOPNOTSUPP || rc == -EINVAL)
-		rc = SMBQueryInformation(xid, tcon, full_path, file_info,
-				cifs_sb->local_nls, cifs_remap(cifs_sb));
-	kfree(file_info);
-	return rc;
-}
-
-static int
-cifs_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
-		     struct cifs_sb_info *cifs_sb, const char *full_path,
-		     FILE_ALL_INFO *data, bool *adjustTZ, bool *symlink)
-{
-	int rc;
-
-	*symlink = false;
-
-	/* could do find first instead but this returns more info */
-	rc = CIFSSMBQPathInfo(xid, tcon, full_path, data, 0 /* not legacy */,
-			      cifs_sb->local_nls, cifs_remap(cifs_sb));
-	/*
-	 * BB optimize code so we do not make the above call when server claims
-	 * no NT SMB support and the above call failed at least once - set flag
-	 * in tcon or mount.
-	 */
-	if ((rc == -EOPNOTSUPP) || (rc == -EINVAL)) {
-		rc = SMBQueryInformation(xid, tcon, full_path, data,
-					 cifs_sb->local_nls,
-					 cifs_remap(cifs_sb));
-		*adjustTZ = true;
-	}
-
-	if (!rc && (le32_to_cpu(data->Attributes) & ATTR_REPARSE)) {
-		int tmprc;
-		int oplock = 0;
-		struct cifs_fid fid;
-		struct cifs_open_parms oparms;
-
-		oparms.tcon = tcon;
-		oparms.cifs_sb = cifs_sb;
-		oparms.desired_access = FILE_READ_ATTRIBUTES;
-		oparms.create_options = cifs_create_options(cifs_sb, 0);
-		oparms.disposition = FILE_OPEN;
-		oparms.path = full_path;
-		oparms.fid = &fid;
-		oparms.reconnect = false;
-
-		/* Need to check if this is a symbolic link or not */
-		tmprc = CIFS_open(xid, &oparms, &oplock, NULL);
-		if (tmprc == -EOPNOTSUPP)
-			*symlink = true;
-		else if (tmprc == 0)
-			CIFSSMBClose(xid, tcon, fid.netfid);
-	}
-
-	return rc;
-}
-
-static int
-cifs_get_srv_inum(const unsigned int xid, struct cifs_tcon *tcon,
-		  struct cifs_sb_info *cifs_sb, const char *full_path,
-		  u64 *uniqueid, FILE_ALL_INFO *data)
-{
-	/*
-	 * We can not use the IndexNumber field by default from Windows or
-	 * Samba (in ALL_INFO buf) but we can request it explicitly. The SNIA
-	 * CIFS spec claims that this value is unique within the scope of a
-	 * share, and the windows docs hint that it's actually unique
-	 * per-machine.
-	 *
-	 * There may be higher info levels that work but are there Windows
-	 * server or network appliances for which IndexNumber field is not
-	 * guaranteed unique?
-	 */
-	return CIFSGetSrvInodeNumber(xid, tcon, full_path, uniqueid,
-				     cifs_sb->local_nls,
-				     cifs_remap(cifs_sb));
-}
-
-static int
-cifs_query_file_info(const unsigned int xid, struct cifs_tcon *tcon,
-		     struct cifs_fid *fid, FILE_ALL_INFO *data)
-{
-	return CIFSSMBQFileInfo(xid, tcon, fid->netfid, data);
-}
-
-static void
-cifs_clear_stats(struct cifs_tcon *tcon)
-{
-	atomic_set(&tcon->stats.cifs_stats.num_writes, 0);
-	atomic_set(&tcon->stats.cifs_stats.num_reads, 0);
-	atomic_set(&tcon->stats.cifs_stats.num_flushes, 0);
-	atomic_set(&tcon->stats.cifs_stats.num_oplock_brks, 0);
-	atomic_set(&tcon->stats.cifs_stats.num_opens, 0);
-	atomic_set(&tcon->stats.cifs_stats.num_posixopens, 0);
-	atomic_set(&tcon->stats.cifs_stats.num_posixmkdirs, 0);
-	atomic_set(&tcon->stats.cifs_stats.num_closes, 0);
-	atomic_set(&tcon->stats.cifs_stats.num_deletes, 0);
-	atomic_set(&tcon->stats.cifs_stats.num_mkdirs, 0);
-	atomic_set(&tcon->stats.cifs_stats.num_rmdirs, 0);
-	atomic_set(&tcon->stats.cifs_stats.num_renames, 0);
-	atomic_set(&tcon->stats.cifs_stats.num_t2renames, 0);
-	atomic_set(&tcon->stats.cifs_stats.num_ffirst, 0);
-	atomic_set(&tcon->stats.cifs_stats.num_fnext, 0);
-	atomic_set(&tcon->stats.cifs_stats.num_fclose, 0);
-	atomic_set(&tcon->stats.cifs_stats.num_hardlinks, 0);
-	atomic_set(&tcon->stats.cifs_stats.num_symlinks, 0);
-	atomic_set(&tcon->stats.cifs_stats.num_locks, 0);
-	atomic_set(&tcon->stats.cifs_stats.num_acl_get, 0);
-	atomic_set(&tcon->stats.cifs_stats.num_acl_set, 0);
-}
-
-static void
-cifs_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
-{
-	seq_printf(m, " Oplocks breaks: %d",
-		   atomic_read(&tcon->stats.cifs_stats.num_oplock_brks));
-	seq_printf(m, "\nReads:  %d Bytes: %llu",
-		   atomic_read(&tcon->stats.cifs_stats.num_reads),
-		   (long long)(tcon->bytes_read));
-	seq_printf(m, "\nWrites: %d Bytes: %llu",
-		   atomic_read(&tcon->stats.cifs_stats.num_writes),
-		   (long long)(tcon->bytes_written));
-	seq_printf(m, "\nFlushes: %d",
-		   atomic_read(&tcon->stats.cifs_stats.num_flushes));
-	seq_printf(m, "\nLocks: %d HardLinks: %d Symlinks: %d",
-		   atomic_read(&tcon->stats.cifs_stats.num_locks),
-		   atomic_read(&tcon->stats.cifs_stats.num_hardlinks),
-		   atomic_read(&tcon->stats.cifs_stats.num_symlinks));
-	seq_printf(m, "\nOpens: %d Closes: %d Deletes: %d",
-		   atomic_read(&tcon->stats.cifs_stats.num_opens),
-		   atomic_read(&tcon->stats.cifs_stats.num_closes),
-		   atomic_read(&tcon->stats.cifs_stats.num_deletes));
-	seq_printf(m, "\nPosix Opens: %d Posix Mkdirs: %d",
-		   atomic_read(&tcon->stats.cifs_stats.num_posixopens),
-		   atomic_read(&tcon->stats.cifs_stats.num_posixmkdirs));
-	seq_printf(m, "\nMkdirs: %d Rmdirs: %d",
-		   atomic_read(&tcon->stats.cifs_stats.num_mkdirs),
-		   atomic_read(&tcon->stats.cifs_stats.num_rmdirs));
-	seq_printf(m, "\nRenames: %d T2 Renames %d",
-		   atomic_read(&tcon->stats.cifs_stats.num_renames),
-		   atomic_read(&tcon->stats.cifs_stats.num_t2renames));
-	seq_printf(m, "\nFindFirst: %d FNext %d FClose %d",
-		   atomic_read(&tcon->stats.cifs_stats.num_ffirst),
-		   atomic_read(&tcon->stats.cifs_stats.num_fnext),
-		   atomic_read(&tcon->stats.cifs_stats.num_fclose));
-}
-
-static void
-cifs_mkdir_setinfo(struct inode *inode, const char *full_path,
-		   struct cifs_sb_info *cifs_sb, struct cifs_tcon *tcon,
-		   const unsigned int xid)
-{
-	FILE_BASIC_INFO info;
-	struct cifsInodeInfo *cifsInode;
-	u32 dosattrs;
-	int rc;
-
-	memset(&info, 0, sizeof(info));
-	cifsInode = CIFS_I(inode);
-	dosattrs = cifsInode->cifsAttrs|ATTR_READONLY;
-	info.Attributes = cpu_to_le32(dosattrs);
-	rc = CIFSSMBSetPathInfo(xid, tcon, full_path, &info, cifs_sb->local_nls,
-				cifs_sb);
-	if (rc == 0)
-		cifsInode->cifsAttrs = dosattrs;
-}
-
-static int
-cifs_open_file(const unsigned int xid, struct cifs_open_parms *oparms,
-	       __u32 *oplock, FILE_ALL_INFO *buf)
-{
-	if (!(oparms->tcon->ses->capabilities & CAP_NT_SMBS))
-		return SMBLegacyOpen(xid, oparms->tcon, oparms->path,
-				     oparms->disposition,
-				     oparms->desired_access,
-				     oparms->create_options,
-				     &oparms->fid->netfid, oplock, buf,
-				     oparms->cifs_sb->local_nls,
-				     cifs_remap(oparms->cifs_sb));
-	return CIFS_open(xid, oparms, oplock, buf);
-}
-
-static void
-cifs_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock)
-{
-	struct cifsInodeInfo *cinode = CIFS_I(d_inode(cfile->dentry));
-	cfile->fid.netfid = fid->netfid;
-	cifs_set_oplock_level(cinode, oplock);
-	cinode->can_cache_brlcks = CIFS_CACHE_WRITE(cinode);
-}
-
-static void
-cifs_close_file(const unsigned int xid, struct cifs_tcon *tcon,
-		struct cifs_fid *fid)
-{
-	CIFSSMBClose(xid, tcon, fid->netfid);
-}
-
-static int
-cifs_flush_file(const unsigned int xid, struct cifs_tcon *tcon,
-		struct cifs_fid *fid)
-{
-	return CIFSSMBFlush(xid, tcon, fid->netfid);
-}
-
-static int
-cifs_sync_read(const unsigned int xid, struct cifs_fid *pfid,
-	       struct cifs_io_parms *parms, unsigned int *bytes_read,
-	       char **buf, int *buf_type)
-{
-	parms->netfid = pfid->netfid;
-	return CIFSSMBRead(xid, parms, bytes_read, buf, buf_type);
-}
-
-static int
-cifs_sync_write(const unsigned int xid, struct cifs_fid *pfid,
-		struct cifs_io_parms *parms, unsigned int *written,
-		struct kvec *iov, unsigned long nr_segs)
-{
-
-	parms->netfid = pfid->netfid;
-	return CIFSSMBWrite2(xid, parms, written, iov, nr_segs);
-}
-
-static int
-smb_set_file_info(struct inode *inode, const char *full_path,
-		  FILE_BASIC_INFO *buf, const unsigned int xid)
-{
-	int oplock = 0;
-	int rc;
-	__u32 netpid;
-	struct cifs_fid fid;
-	struct cifs_open_parms oparms;
-	struct cifsFileInfo *open_file;
-	struct cifsInodeInfo *cinode = CIFS_I(inode);
-	struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
-	struct tcon_link *tlink = NULL;
-	struct cifs_tcon *tcon;
-
-	/* if the file is already open for write, just use that fileid */
-	open_file = find_writable_file(cinode, FIND_WR_FSUID_ONLY);
-	if (open_file) {
-		fid.netfid = open_file->fid.netfid;
-		netpid = open_file->pid;
-		tcon = tlink_tcon(open_file->tlink);
-		goto set_via_filehandle;
-	}
-
-	tlink = cifs_sb_tlink(cifs_sb);
-	if (IS_ERR(tlink)) {
-		rc = PTR_ERR(tlink);
-		tlink = NULL;
-		goto out;
-	}
-	tcon = tlink_tcon(tlink);
-
-	rc = CIFSSMBSetPathInfo(xid, tcon, full_path, buf, cifs_sb->local_nls,
-				cifs_sb);
-	if (rc == 0) {
-		cinode->cifsAttrs = le32_to_cpu(buf->Attributes);
-		goto out;
-	} else if (rc != -EOPNOTSUPP && rc != -EINVAL) {
-		goto out;
-	}
-
-	oparms.tcon = tcon;
-	oparms.cifs_sb = cifs_sb;
-	oparms.desired_access = SYNCHRONIZE | FILE_WRITE_ATTRIBUTES;
-	oparms.create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR);
-	oparms.disposition = FILE_OPEN;
-	oparms.path = full_path;
-	oparms.fid = &fid;
-	oparms.reconnect = false;
-
-	cifs_dbg(FYI, "calling SetFileInfo since SetPathInfo for times not supported by this server\n");
-	rc = CIFS_open(xid, &oparms, &oplock, NULL);
-	if (rc != 0) {
-		if (rc == -EIO)
-			rc = -EINVAL;
-		goto out;
-	}
-
-	netpid = current->tgid;
-
-set_via_filehandle:
-	rc = CIFSSMBSetFileInfo(xid, tcon, buf, fid.netfid, netpid);
-	if (!rc)
-		cinode->cifsAttrs = le32_to_cpu(buf->Attributes);
-
-	if (open_file == NULL)
-		CIFSSMBClose(xid, tcon, fid.netfid);
-	else
-		cifsFileInfo_put(open_file);
-out:
-	if (tlink != NULL)
-		cifs_put_tlink(tlink);
-	return rc;
-}
-
-static int
-cifs_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
-		   struct cifsFileInfo *cfile)
-{
-	return CIFSSMB_set_compression(xid, tcon, cfile->fid.netfid);
-}
-
-static int
-cifs_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
-		     const char *path, struct cifs_sb_info *cifs_sb,
-		     struct cifs_fid *fid, __u16 search_flags,
-		     struct cifs_search_info *srch_inf)
-{
-	int rc;
-
-	rc = CIFSFindFirst(xid, tcon, path, cifs_sb,
-			   &fid->netfid, search_flags, srch_inf, true);
-	if (rc)
-		cifs_dbg(FYI, "find first failed=%d\n", rc);
-	return rc;
-}
-
-static int
-cifs_query_dir_next(const unsigned int xid, struct cifs_tcon *tcon,
-		    struct cifs_fid *fid, __u16 search_flags,
-		    struct cifs_search_info *srch_inf)
-{
-	return CIFSFindNext(xid, tcon, fid->netfid, search_flags, srch_inf);
-}
-
-static int
-cifs_close_dir(const unsigned int xid, struct cifs_tcon *tcon,
-	       struct cifs_fid *fid)
-{
-	return CIFSFindClose(xid, tcon, fid->netfid);
-}
-
-static int
-cifs_oplock_response(struct cifs_tcon *tcon, __u64 persistent_fid,
-		__u64 volatile_fid, __u16 net_fid, struct cifsInodeInfo *cinode)
-{
-	return CIFSSMBLock(0, tcon, net_fid, current->tgid, 0, 0, 0, 0,
-			   LOCKING_ANDX_OPLOCK_RELEASE, false, CIFS_CACHE_READ(cinode) ? 1 : 0);
-}
-
-static int
-cifs_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
-	     struct cifs_sb_info *cifs_sb, struct kstatfs *buf)
-{
-	int rc = -EOPNOTSUPP;
-
-	buf->f_type = CIFS_MAGIC_NUMBER;
-
-	/*
-	 * We could add a second check for a QFS Unix capability bit
-	 */
-	if ((tcon->ses->capabilities & CAP_UNIX) &&
-	    (CIFS_POSIX_EXTENSIONS & le64_to_cpu(tcon->fsUnixInfo.Capability)))
-		rc = CIFSSMBQFSPosixInfo(xid, tcon, buf);
-
-	/*
-	 * Only need to call the old QFSInfo if failed on newer one,
-	 * e.g. by OS/2.
-	 **/
-	if (rc && (tcon->ses->capabilities & CAP_NT_SMBS))
-		rc = CIFSSMBQFSInfo(xid, tcon, buf);
-
-	/*
-	 * Some old Windows servers also do not support level 103, retry with
-	 * older level one if old server failed the previous call or we
-	 * bypassed it because we detected that this was an older LANMAN sess
-	 */
-	if (rc)
-		rc = SMBOldQFSInfo(xid, tcon, buf);
-	return rc;
-}
-
-static int
-cifs_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset,
-	       __u64 length, __u32 type, int lock, int unlock, bool wait)
-{
-	return CIFSSMBLock(xid, tlink_tcon(cfile->tlink), cfile->fid.netfid,
-			   current->tgid, length, offset, unlock, lock,
-			   (__u8)type, wait, 0);
-}
-
-static int
-cifs_unix_dfs_readlink(const unsigned int xid, struct cifs_tcon *tcon,
-		       const unsigned char *searchName, char **symlinkinfo,
-		       const struct nls_table *nls_codepage)
-{
-#ifdef CONFIG_CIFS_DFS_UPCALL
-	int rc;
-	struct dfs_info3_param referral = {0};
-
-	rc = get_dfs_path(xid, tcon->ses, searchName, nls_codepage, &referral,
-			  0);
-
-	if (!rc) {
-		*symlinkinfo = kstrdup(referral.node_name, GFP_KERNEL);
-		free_dfs_info_param(&referral);
-		if (!*symlinkinfo)
-			rc = -ENOMEM;
-	}
-	return rc;
-#else /* No DFS support */
-	return -EREMOTE;
-#endif
-}
-
-static int
-cifs_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
-		   struct cifs_sb_info *cifs_sb, const char *full_path,
-		   char **target_path, bool is_reparse_point)
-{
-	int rc;
-	int oplock = 0;
-	struct cifs_fid fid;
-	struct cifs_open_parms oparms;
-
-	cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path);
-
-	if (is_reparse_point) {
-		cifs_dbg(VFS, "reparse points not handled for SMB1 symlinks\n");
-		return -EOPNOTSUPP;
-	}
-
-	/* Check for unix extensions */
-	if (cap_unix(tcon->ses)) {
-		rc = CIFSSMBUnixQuerySymLink(xid, tcon, full_path, target_path,
-					     cifs_sb->local_nls,
-					     cifs_remap(cifs_sb));
-		if (rc == -EREMOTE)
-			rc = cifs_unix_dfs_readlink(xid, tcon, full_path,
-						    target_path,
-						    cifs_sb->local_nls);
-
-		goto out;
-	}
-
-	oparms.tcon = tcon;
-	oparms.cifs_sb = cifs_sb;
-	oparms.desired_access = FILE_READ_ATTRIBUTES;
-	oparms.create_options = cifs_create_options(cifs_sb,
-						    OPEN_REPARSE_POINT);
-	oparms.disposition = FILE_OPEN;
-	oparms.path = full_path;
-	oparms.fid = &fid;
-	oparms.reconnect = false;
-
-	rc = CIFS_open(xid, &oparms, &oplock, NULL);
-	if (rc)
-		goto out;
-
-	rc = CIFSSMBQuerySymLink(xid, tcon, fid.netfid, target_path,
-				 cifs_sb->local_nls);
-	if (rc)
-		goto out_close;
-
-	convert_delimiter(*target_path, '/');
-out_close:
-	CIFSSMBClose(xid, tcon, fid.netfid);
-out:
-	if (!rc)
-		cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
-	return rc;
-}
-
-static bool
-cifs_is_read_op(__u32 oplock)
-{
-	return oplock == OPLOCK_READ;
-}
-
-static unsigned int
-cifs_wp_retry_size(struct inode *inode)
-{
-	return CIFS_SB(inode->i_sb)->ctx->wsize;
-}
-
-static bool
-cifs_dir_needs_close(struct cifsFileInfo *cfile)
-{
-	return !cfile->srch_inf.endOfSearch && !cfile->invalidHandle;
-}
-
-static bool
-cifs_can_echo(struct TCP_Server_Info *server)
-{
-	if (server->tcpStatus == CifsGood)
-		return true;
-
-	return false;
-}
-
-static int
-cifs_make_node(unsigned int xid, struct inode *inode,
-	       struct dentry *dentry, struct cifs_tcon *tcon,
-	       const char *full_path, umode_t mode, dev_t dev)
-{
-	struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
-	struct inode *newinode = NULL;
-	int rc = -EPERM;
-	FILE_ALL_INFO *buf = NULL;
-	struct cifs_io_parms io_parms;
-	__u32 oplock = 0;
-	struct cifs_fid fid;
-	struct cifs_open_parms oparms;
-	unsigned int bytes_written;
-	struct win_dev *pdev;
-	struct kvec iov[2];
-
-	if (tcon->unix_ext) {
-		/*
-		 * SMB1 Unix Extensions: requires server support but
-		 * works with all special files
-		 */
-		struct cifs_unix_set_info_args args = {
-			.mode	= mode & ~current_umask(),
-			.ctime	= NO_CHANGE_64,
-			.atime	= NO_CHANGE_64,
-			.mtime	= NO_CHANGE_64,
-			.device	= dev,
-		};
-		if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
-			args.uid = current_fsuid();
-			args.gid = current_fsgid();
-		} else {
-			args.uid = INVALID_UID; /* no change */
-			args.gid = INVALID_GID; /* no change */
-		}
-		rc = CIFSSMBUnixSetPathInfo(xid, tcon, full_path, &args,
-					    cifs_sb->local_nls,
-					    cifs_remap(cifs_sb));
-		if (rc)
-			goto out;
-
-		rc = cifs_get_inode_info_unix(&newinode, full_path,
-					      inode->i_sb, xid);
-
-		if (rc == 0)
-			d_instantiate(dentry, newinode);
-		goto out;
-	}
-
-	/*
-	 * SMB1 SFU emulation: should work with all servers, but only
-	 * support block and char device (no socket & fifo)
-	 */
-	if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL))
-		goto out;
-
-	if (!S_ISCHR(mode) && !S_ISBLK(mode))
-		goto out;
-
-	cifs_dbg(FYI, "sfu compat create special file\n");
-
-	buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
-	if (buf == NULL) {
-		rc = -ENOMEM;
-		goto out;
-	}
-
-	oparms.tcon = tcon;
-	oparms.cifs_sb = cifs_sb;
-	oparms.desired_access = GENERIC_WRITE;
-	oparms.create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR |
-						    CREATE_OPTION_SPECIAL);
-	oparms.disposition = FILE_CREATE;
-	oparms.path = full_path;
-	oparms.fid = &fid;
-	oparms.reconnect = false;
-
-	if (tcon->ses->server->oplocks)
-		oplock = REQ_OPLOCK;
-	else
-		oplock = 0;
-	rc = tcon->ses->server->ops->open(xid, &oparms, &oplock, buf);
-	if (rc)
-		goto out;
-
-	/*
-	 * BB Do not bother to decode buf since no local inode yet to put
-	 * timestamps in, but we can reuse it safely.
-	 */
-
-	pdev = (struct win_dev *)buf;
-	io_parms.pid = current->tgid;
-	io_parms.tcon = tcon;
-	io_parms.offset = 0;
-	io_parms.length = sizeof(struct win_dev);
-	iov[1].iov_base = buf;
-	iov[1].iov_len = sizeof(struct win_dev);
-	if (S_ISCHR(mode)) {
-		memcpy(pdev->type, "IntxCHR", 8);
-		pdev->major = cpu_to_le64(MAJOR(dev));
-		pdev->minor = cpu_to_le64(MINOR(dev));
-		rc = tcon->ses->server->ops->sync_write(xid, &fid, &io_parms,
-							&bytes_written, iov, 1);
-	} else if (S_ISBLK(mode)) {
-		memcpy(pdev->type, "IntxBLK", 8);
-		pdev->major = cpu_to_le64(MAJOR(dev));
-		pdev->minor = cpu_to_le64(MINOR(dev));
-		rc = tcon->ses->server->ops->sync_write(xid, &fid, &io_parms,
-							&bytes_written, iov, 1);
-	}
-	tcon->ses->server->ops->close(xid, tcon, &fid);
-	d_drop(dentry);
-
-	/* FIXME: add code here to set EAs */
-out:
-	kfree(buf);
-	return rc;
-}
-
-
-
-struct smb_version_operations smb1_operations = {
-	.send_cancel = send_nt_cancel,
-	.compare_fids = cifs_compare_fids,
-	.setup_request = cifs_setup_request,
-	.setup_async_request = cifs_setup_async_request,
-	.check_receive = cifs_check_receive,
-	.add_credits = cifs_add_credits,
-	.set_credits = cifs_set_credits,
-	.get_credits_field = cifs_get_credits_field,
-	.get_credits = cifs_get_credits,
-	.wait_mtu_credits = cifs_wait_mtu_credits,
-	.get_next_mid = cifs_get_next_mid,
-	.read_data_offset = cifs_read_data_offset,
-	.read_data_length = cifs_read_data_length,
-	.map_error = map_smb_to_linux_error,
-	.find_mid = cifs_find_mid,
-	.check_message = checkSMB,
-	.dump_detail = cifs_dump_detail,
-	.clear_stats = cifs_clear_stats,
-	.print_stats = cifs_print_stats,
-	.is_oplock_break = is_valid_oplock_break,
-	.downgrade_oplock = cifs_downgrade_oplock,
-	.check_trans2 = cifs_check_trans2,
-	.need_neg = cifs_need_neg,
-	.negotiate = cifs_negotiate,
-	.negotiate_wsize = cifs_negotiate_wsize,
-	.negotiate_rsize = cifs_negotiate_rsize,
-	.sess_setup = CIFS_SessSetup,
-	.logoff = CIFSSMBLogoff,
-	.tree_connect = CIFSTCon,
-	.tree_disconnect = CIFSSMBTDis,
-	.get_dfs_refer = CIFSGetDFSRefer,
-	.qfs_tcon = cifs_qfs_tcon,
-	.is_path_accessible = cifs_is_path_accessible,
-	.can_echo = cifs_can_echo,
-	.query_path_info = cifs_query_path_info,
-	.query_file_info = cifs_query_file_info,
-	.get_srv_inum = cifs_get_srv_inum,
-	.set_path_size = CIFSSMBSetEOF,
-	.set_file_size = CIFSSMBSetFileSize,
-	.set_file_info = smb_set_file_info,
-	.set_compression = cifs_set_compression,
-	.echo = CIFSSMBEcho,
-	.mkdir = CIFSSMBMkDir,
-	.mkdir_setinfo = cifs_mkdir_setinfo,
-	.rmdir = CIFSSMBRmDir,
-	.unlink = CIFSSMBDelFile,
-	.rename_pending_delete = cifs_rename_pending_delete,
-	.rename = CIFSSMBRename,
-	.create_hardlink = CIFSCreateHardLink,
-	.query_symlink = cifs_query_symlink,
-	.open = cifs_open_file,
-	.set_fid = cifs_set_fid,
-	.close = cifs_close_file,
-	.flush = cifs_flush_file,
-	.async_readv = cifs_async_readv,
-	.async_writev = cifs_async_writev,
-	.sync_read = cifs_sync_read,
-	.sync_write = cifs_sync_write,
-	.query_dir_first = cifs_query_dir_first,
-	.query_dir_next = cifs_query_dir_next,
-	.close_dir = cifs_close_dir,
-	.calc_smb_size = smbCalcSize,
-	.oplock_response = cifs_oplock_response,
-	.queryfs = cifs_queryfs,
-	.mand_lock = cifs_mand_lock,
-	.mand_unlock_range = cifs_unlock_range,
-	.push_mand_locks = cifs_push_mandatory_locks,
-	.query_mf_symlink = cifs_query_mf_symlink,
-	.create_mf_symlink = cifs_create_mf_symlink,
-	.is_read_op = cifs_is_read_op,
-	.wp_retry_size = cifs_wp_retry_size,
-	.dir_needs_close = cifs_dir_needs_close,
-	.select_sectype = cifs_select_sectype,
-#ifdef CONFIG_CIFS_XATTR
-	.query_all_EAs = CIFSSMBQAllEAs,
-	.set_EA = CIFSSMBSetEA,
-#endif /* CIFS_XATTR */
-	.get_acl = get_cifs_acl,
-	.get_acl_by_fid = get_cifs_acl_by_fid,
-	.set_acl = set_cifs_acl,
-	.make_node = cifs_make_node,
-};
-
-struct smb_version_values smb1_values = {
-	.version_string = SMB1_VERSION_STRING,
-	.protocol_id = SMB10_PROT_ID,
-	.large_lock_type = LOCKING_ANDX_LARGE_FILES,
-	.exclusive_lock_type = 0,
-	.shared_lock_type = LOCKING_ANDX_SHARED_LOCK,
-	.unlock_lock_type = 0,
-	.header_preamble_size = 4,
-	.header_size = sizeof(struct smb_hdr),
-	.max_header_size = MAX_CIFS_HDR_SIZE,
-	.read_rsp_size = sizeof(READ_RSP),
-	.lock_cmd = cpu_to_le16(SMB_COM_LOCKING_ANDX),
-	.cap_unix = CAP_UNIX,
-	.cap_nt_find = CAP_NT_SMBS | CAP_NT_FIND,
-	.cap_large_files = CAP_LARGE_FILES,
-	.signing_enabled = SECMODE_SIGN_ENABLED,
-	.signing_required = SECMODE_SIGN_REQUIRED,
-};
+#include "../smb/client/smb1transport.c"
diff --git a/fs/cifs/smb1proto.h b/fs/cifs/smb1proto.h
new file mode 100644
index 0000000000000..8dfc6976ceba1
--- /dev/null
+++ b/fs/cifs/smb1proto.h
@@ -0,0 +1,40 @@
+/* SPDX-License-Identifier: LGPL-2.1 */
+/*
+ *
+ *   Copyright (c) International Business Machines  Corp., 2002,2008
+ *   Author(s): Steve French (sfrench@xxxxxxxxxx)
+ *
+ */
+#ifndef _SMB1PROTO_H
+#define _SMB1PROTO_H
+
+struct cifs_unix_set_info_args {
+	__u64	ctime;
+	__u64	atime;
+	__u64	mtime;
+	__u64	mode;
+	kuid_t	uid;
+	kgid_t	gid;
+	dev_t	device;
+};
+
+#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
+
+/*
+ * cifssmb.c
+ */
+
+/*
+ * smb1ops.c
+ */
+extern struct smb_version_operations smb1_operations;
+extern struct smb_version_values smb1_values;
+
+/*
+ * smb1transport.c
+ */
+bool cifs_check_trans2(struct mid_q_entry *mid, struct TCP_Server_Info *server,
+		       char *buf, int malformed);
+
+#endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */
+#endif /* _SMB1PROTO_H */
diff --git a/fs/smb/client/smb1transport.c b/fs/smb/client/smb1transport.c
new file mode 100644
index 0000000000000..73edca2ac98b3
--- /dev/null
+++ b/fs/smb/client/smb1transport.c
@@ -0,0 +1,1251 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ *  SMB1 (CIFS) version specific operations
+ *
+ *  Copyright (c) 2012, Jeff Layton <jlayton@xxxxxxxxxx>
+ */
+
+#include <linux/pagemap.h>
+#include <linux/vfs.h>
+#include "cifsglob.h"
+#include "cifsproto.h"
+#include "cifs_debug.h"
+#include "cifspdu.h"
+#include "cifs_unicode.h"
+#include "fs_context.h"
+
+/*
+ * An NT cancel request header looks just like the original request except:
+ *
+ * The Command is SMB_COM_NT_CANCEL
+ * The WordCount is zeroed out
+ * The ByteCount is zeroed out
+ *
+ * This function mangles an existing request buffer into a
+ * SMB_COM_NT_CANCEL request and then sends it.
+ */
+static int
+send_nt_cancel(struct TCP_Server_Info *server, struct smb_rqst *rqst,
+	       struct mid_q_entry *mid)
+{
+	int rc = 0;
+	struct smb_hdr *in_buf = (struct smb_hdr *)rqst->rq_iov[0].iov_base;
+
+	/* -4 for RFC1001 length and +2 for BCC field */
+	in_buf->smb_buf_length = cpu_to_be32(sizeof(struct smb_hdr) - 4  + 2);
+	in_buf->Command = SMB_COM_NT_CANCEL;
+	in_buf->WordCount = 0;
+	put_bcc(0, in_buf);
+
+	mutex_lock(&server->srv_mutex);
+	rc = cifs_sign_smb(in_buf, server, &mid->sequence_number);
+	if (rc) {
+		mutex_unlock(&server->srv_mutex);
+		return rc;
+	}
+
+	/*
+	 * The response to this call was already factored into the sequence
+	 * number when the call went out, so we must adjust it back downward
+	 * after signing here.
+	 */
+	--server->sequence_number;
+	rc = smb_send(server, in_buf, be32_to_cpu(in_buf->smb_buf_length));
+	if (rc < 0)
+		server->sequence_number--;
+
+	mutex_unlock(&server->srv_mutex);
+
+	cifs_dbg(FYI, "issued NT_CANCEL for mid %u, rc = %d\n",
+		 get_mid(in_buf), rc);
+
+	return rc;
+}
+
+static bool
+cifs_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2)
+{
+	return ob1->fid.netfid == ob2->fid.netfid;
+}
+
+static unsigned int
+cifs_read_data_offset(char *buf)
+{
+	READ_RSP *rsp = (READ_RSP *)buf;
+	return le16_to_cpu(rsp->DataOffset);
+}
+
+static unsigned int
+cifs_read_data_length(char *buf, bool in_remaining)
+{
+	READ_RSP *rsp = (READ_RSP *)buf;
+	/* It's a bug reading remaining data for SMB1 packets */
+	WARN_ON(in_remaining);
+	return (le16_to_cpu(rsp->DataLengthHigh) << 16) +
+	       le16_to_cpu(rsp->DataLength);
+}
+
+static struct mid_q_entry *
+cifs_find_mid(struct TCP_Server_Info *server, char *buffer)
+{
+	struct smb_hdr *buf = (struct smb_hdr *)buffer;
+	struct mid_q_entry *mid;
+
+	spin_lock(&GlobalMid_Lock);
+	list_for_each_entry(mid, &server->pending_mid_q, qhead) {
+		if (compare_mid(mid->mid, buf) &&
+		    mid->mid_state == MID_REQUEST_SUBMITTED &&
+		    le16_to_cpu(mid->command) == buf->Command) {
+			kref_get(&mid->refcount);
+			spin_unlock(&GlobalMid_Lock);
+			return mid;
+		}
+	}
+	spin_unlock(&GlobalMid_Lock);
+	return NULL;
+}
+
+static void
+cifs_add_credits(struct TCP_Server_Info *server,
+		 const struct cifs_credits *credits, const int optype)
+{
+	spin_lock(&server->req_lock);
+	server->credits += credits->value;
+	server->in_flight--;
+	spin_unlock(&server->req_lock);
+	wake_up(&server->request_q);
+}
+
+static void
+cifs_set_credits(struct TCP_Server_Info *server, const int val)
+{
+	spin_lock(&server->req_lock);
+	server->credits = val;
+	server->oplocks = val > 1 ? enable_oplocks : false;
+	spin_unlock(&server->req_lock);
+}
+
+static int *
+cifs_get_credits_field(struct TCP_Server_Info *server, const int optype)
+{
+	return &server->credits;
+}
+
+static unsigned int
+cifs_get_credits(struct mid_q_entry *mid)
+{
+	return 1;
+}
+
+/*
+ * Find a free multiplex id (SMB mid). Otherwise there could be
+ * mid collisions which might cause problems, demultiplexing the
+ * wrong response to this request. Multiplex ids could collide if
+ * one of a series requests takes much longer than the others, or
+ * if a very large number of long lived requests (byte range
+ * locks or FindNotify requests) are pending. No more than
+ * 64K-1 requests can be outstanding at one time. If no
+ * mids are available, return zero. A future optimization
+ * could make the combination of mids and uid the key we use
+ * to demultiplex on (rather than mid alone).
+ * In addition to the above check, the cifs demultiplex
+ * code already used the command code as a secondary
+ * check of the frame and if signing is negotiated the
+ * response would be discarded if the mid were the same
+ * but the signature was wrong. Since the mid is not put in the
+ * pending queue until later (when it is about to be dispatched)
+ * we do have to limit the number of outstanding requests
+ * to somewhat less than 64K-1 although it is hard to imagine
+ * so many threads being in the vfs at one time.
+ */
+static __u64
+cifs_get_next_mid(struct TCP_Server_Info *server)
+{
+	__u64 mid = 0;
+	__u16 last_mid, cur_mid;
+	bool collision;
+
+	spin_lock(&GlobalMid_Lock);
+
+	/* mid is 16 bit only for CIFS/SMB */
+	cur_mid = (__u16)((server->CurrentMid) & 0xffff);
+	/* we do not want to loop forever */
+	last_mid = cur_mid;
+	cur_mid++;
+	/* avoid 0xFFFF MID */
+	if (cur_mid == 0xffff)
+		cur_mid++;
+
+	/*
+	 * This nested loop looks more expensive than it is.
+	 * In practice the list of pending requests is short,
+	 * fewer than 50, and the mids are likely to be unique
+	 * on the first pass through the loop unless some request
+	 * takes longer than the 64 thousand requests before it
+	 * (and it would also have to have been a request that
+	 * did not time out).
+	 */
+	while (cur_mid != last_mid) {
+		struct mid_q_entry *mid_entry;
+		unsigned int num_mids;
+
+		collision = false;
+		if (cur_mid == 0)
+			cur_mid++;
+
+		num_mids = 0;
+		list_for_each_entry(mid_entry, &server->pending_mid_q, qhead) {
+			++num_mids;
+			if (mid_entry->mid == cur_mid &&
+			    mid_entry->mid_state == MID_REQUEST_SUBMITTED) {
+				/* This mid is in use, try a different one */
+				collision = true;
+				break;
+			}
+		}
+
+		/*
+		 * if we have more than 32k mids in the list, then something
+		 * is very wrong. Possibly a local user is trying to DoS the
+		 * box by issuing long-running calls and SIGKILL'ing them. If
+		 * we get to 2^16 mids then we're in big trouble as this
+		 * function could loop forever.
+		 *
+		 * Go ahead and assign out the mid in this situation, but force
+		 * an eventual reconnect to clean out the pending_mid_q.
+		 */
+		if (num_mids > 32768)
+			server->tcpStatus = CifsNeedReconnect;
+
+		if (!collision) {
+			mid = (__u64)cur_mid;
+			server->CurrentMid = mid;
+			break;
+		}
+		cur_mid++;
+	}
+	spin_unlock(&GlobalMid_Lock);
+	return mid;
+}
+
+/*
+	return codes:
+		0	not a transact2, or all data present
+		>0	transact2 with that much data missing
+		-EINVAL	invalid transact2
+ */
+static int
+check2ndT2(char *buf)
+{
+	struct smb_hdr *pSMB = (struct smb_hdr *)buf;
+	struct smb_t2_rsp *pSMBt;
+	int remaining;
+	__u16 total_data_size, data_in_this_rsp;
+
+	if (pSMB->Command != SMB_COM_TRANSACTION2)
+		return 0;
+
+	/* check for plausible wct, bcc and t2 data and parm sizes */
+	/* check for parm and data offset going beyond end of smb */
+	if (pSMB->WordCount != 10) { /* coalesce_t2 depends on this */
+		cifs_dbg(FYI, "Invalid transact2 word count\n");
+		return -EINVAL;
+	}
+
+	pSMBt = (struct smb_t2_rsp *)pSMB;
+
+	total_data_size = get_unaligned_le16(&pSMBt->t2_rsp.TotalDataCount);
+	data_in_this_rsp = get_unaligned_le16(&pSMBt->t2_rsp.DataCount);
+
+	if (total_data_size == data_in_this_rsp)
+		return 0;
+	else if (total_data_size < data_in_this_rsp) {
+		cifs_dbg(FYI, "total data %d smaller than data in frame %d\n",
+			 total_data_size, data_in_this_rsp);
+		return -EINVAL;
+	}
+
+	remaining = total_data_size - data_in_this_rsp;
+
+	cifs_dbg(FYI, "missing %d bytes from transact2, check next response\n",
+		 remaining);
+	if (total_data_size > CIFSMaxBufSize) {
+		cifs_dbg(VFS, "TotalDataSize %d is over maximum buffer %d\n",
+			 total_data_size, CIFSMaxBufSize);
+		return -EINVAL;
+	}
+	return remaining;
+}
+
+static int
+coalesce_t2(char *second_buf, struct smb_hdr *target_hdr)
+{
+	struct smb_t2_rsp *pSMBs = (struct smb_t2_rsp *)second_buf;
+	struct smb_t2_rsp *pSMBt  = (struct smb_t2_rsp *)target_hdr;
+	char *data_area_of_tgt;
+	char *data_area_of_src;
+	int remaining;
+	unsigned int byte_count, total_in_tgt;
+	__u16 tgt_total_cnt, src_total_cnt, total_in_src;
+
+	src_total_cnt = get_unaligned_le16(&pSMBs->t2_rsp.TotalDataCount);
+	tgt_total_cnt = get_unaligned_le16(&pSMBt->t2_rsp.TotalDataCount);
+
+	if (tgt_total_cnt != src_total_cnt)
+		cifs_dbg(FYI, "total data count of primary and secondary t2 differ source=%hu target=%hu\n",
+			 src_total_cnt, tgt_total_cnt);
+
+	total_in_tgt = get_unaligned_le16(&pSMBt->t2_rsp.DataCount);
+
+	remaining = tgt_total_cnt - total_in_tgt;
+
+	if (remaining < 0) {
+		cifs_dbg(FYI, "Server sent too much data. tgt_total_cnt=%hu total_in_tgt=%u\n",
+			 tgt_total_cnt, total_in_tgt);
+		return -EPROTO;
+	}
+
+	if (remaining == 0) {
+		/* nothing to do, ignore */
+		cifs_dbg(FYI, "no more data remains\n");
+		return 0;
+	}
+
+	total_in_src = get_unaligned_le16(&pSMBs->t2_rsp.DataCount);
+	if (remaining < total_in_src)
+		cifs_dbg(FYI, "transact2 2nd response contains too much data\n");
+
+	/* find end of first SMB data area */
+	data_area_of_tgt = (char *)&pSMBt->hdr.Protocol +
+				get_unaligned_le16(&pSMBt->t2_rsp.DataOffset);
+
+	/* validate target area */
+	data_area_of_src = (char *)&pSMBs->hdr.Protocol +
+				get_unaligned_le16(&pSMBs->t2_rsp.DataOffset);
+
+	data_area_of_tgt += total_in_tgt;
+
+	total_in_tgt += total_in_src;
+	/* is the result too big for the field? */
+	if (total_in_tgt > USHRT_MAX) {
+		cifs_dbg(FYI, "coalesced DataCount too large (%u)\n",
+			 total_in_tgt);
+		return -EPROTO;
+	}
+	put_unaligned_le16(total_in_tgt, &pSMBt->t2_rsp.DataCount);
+
+	/* fix up the BCC */
+	byte_count = get_bcc(target_hdr);
+	byte_count += total_in_src;
+	/* is the result too big for the field? */
+	if (byte_count > USHRT_MAX) {
+		cifs_dbg(FYI, "coalesced BCC too large (%u)\n", byte_count);
+		return -EPROTO;
+	}
+	put_bcc(byte_count, target_hdr);
+
+	byte_count = be32_to_cpu(target_hdr->smb_buf_length);
+	byte_count += total_in_src;
+	/* don't allow buffer to overflow */
+	if (byte_count > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) {
+		cifs_dbg(FYI, "coalesced BCC exceeds buffer size (%u)\n",
+			 byte_count);
+		return -ENOBUFS;
+	}
+	target_hdr->smb_buf_length = cpu_to_be32(byte_count);
+
+	/* copy second buffer into end of first buffer */
+	memcpy(data_area_of_tgt, data_area_of_src, total_in_src);
+
+	if (remaining != total_in_src) {
+		/* more responses to go */
+		cifs_dbg(FYI, "waiting for more secondary responses\n");
+		return 1;
+	}
+
+	/* we are done */
+	cifs_dbg(FYI, "found the last secondary response\n");
+	return 0;
+}
+
+static void
+cifs_downgrade_oplock(struct TCP_Server_Info *server,
+		      struct cifsInodeInfo *cinode, __u32 oplock,
+		      unsigned int epoch, bool *purge_cache)
+{
+	cifs_set_oplock_level(cinode, oplock);
+}
+
+#define dequeue_mid(server, mid, malformed) dequeue_mid(mid, malformed)
+
+bool
+cifs_check_trans2(struct mid_q_entry *mid, struct TCP_Server_Info *server,
+		  char *buf, int malformed)
+{
+	if (malformed)
+		return false;
+	if (check2ndT2(buf) <= 0)
+		return false;
+	mid->multiRsp = true;
+	if (mid->resp_buf) {
+		/* merge response - fix up 1st*/
+		malformed = coalesce_t2(buf, mid->resp_buf);
+		if (malformed > 0)
+			return true;
+		/* All parts received or packet is malformed. */
+		mid->multiEnd = true;
+		dequeue_mid(server, mid, malformed);
+		return true;
+	}
+	if (!server->large_buf) {
+		/*FIXME: switch to already allocated largebuf?*/
+		cifs_dbg(VFS, "1st trans2 resp needs bigbuf\n");
+	} else {
+		/* Have first buffer */
+		mid->resp_buf = buf;
+		mid->large_buf = true;
+		server->bigbuf = NULL;
+	}
+	return true;
+}
+
+#undef dequeue_mid
+
+static bool
+cifs_need_neg(struct TCP_Server_Info *server)
+{
+	return server->maxBuf == 0;
+}
+
+static int
+cifs_negotiate(const unsigned int xid, struct cifs_ses *ses)
+{
+	int rc;
+	rc = CIFSSMBNegotiate(xid, ses);
+	if (rc == -EAGAIN) {
+		/* retry only once on 1st time connection */
+		set_credits(ses->server, 1);
+		rc = CIFSSMBNegotiate(xid, ses);
+		if (rc == -EAGAIN)
+			rc = -EHOSTDOWN;
+	}
+	return rc;
+}
+
+static unsigned int
+cifs_negotiate_wsize(struct cifs_tcon *tcon, struct smb3_fs_context *ctx)
+{
+	__u64 unix_cap = le64_to_cpu(tcon->fsUnixInfo.Capability);
+	struct TCP_Server_Info *server = tcon->ses->server;
+	unsigned int wsize;
+
+	/* start with specified wsize, or default */
+	if (ctx->wsize)
+		wsize = ctx->wsize;
+	else if (tcon->unix_ext && (unix_cap & CIFS_UNIX_LARGE_WRITE_CAP))
+		wsize = CIFS_DEFAULT_IOSIZE;
+	else
+		wsize = CIFS_DEFAULT_NON_POSIX_WSIZE;
+
+	/* can server support 24-bit write sizes? (via UNIX extensions) */
+	if (!tcon->unix_ext || !(unix_cap & CIFS_UNIX_LARGE_WRITE_CAP))
+		wsize = min_t(unsigned int, wsize, CIFS_MAX_RFC1002_WSIZE);
+
+	/*
+	 * no CAP_LARGE_WRITE_X or is signing enabled without CAP_UNIX set?
+	 * Limit it to max buffer offered by the server, minus the size of the
+	 * WRITEX header, not including the 4 byte RFC1001 length.
+	 */
+	if (!(server->capabilities & CAP_LARGE_WRITE_X) ||
+	    (!(server->capabilities & CAP_UNIX) && server->sign))
+		wsize = min_t(unsigned int, wsize,
+				server->maxBuf - sizeof(WRITE_REQ) + 4);
+
+	/* hard limit of CIFS_MAX_WSIZE */
+	wsize = min_t(unsigned int, wsize, CIFS_MAX_WSIZE);
+
+	return wsize;
+}
+
+static unsigned int
+cifs_negotiate_rsize(struct cifs_tcon *tcon, struct smb3_fs_context *ctx)
+{
+	__u64 unix_cap = le64_to_cpu(tcon->fsUnixInfo.Capability);
+	struct TCP_Server_Info *server = tcon->ses->server;
+	unsigned int rsize, defsize;
+
+	/*
+	 * Set default value...
+	 *
+	 * HACK alert! Ancient servers have very small buffers. Even though
+	 * MS-CIFS indicates that servers are only limited by the client's
+	 * bufsize for reads, testing against win98se shows that it throws
+	 * INVALID_PARAMETER errors if you try to request too large a read.
+	 * OS/2 just sends back short reads.
+	 *
+	 * If the server doesn't advertise CAP_LARGE_READ_X, then assume that
+	 * it can't handle a read request larger than its MaxBufferSize either.
+	 */
+	if (tcon->unix_ext && (unix_cap & CIFS_UNIX_LARGE_READ_CAP))
+		defsize = CIFS_DEFAULT_IOSIZE;
+	else if (server->capabilities & CAP_LARGE_READ_X)
+		defsize = CIFS_DEFAULT_NON_POSIX_RSIZE;
+	else
+		defsize = server->maxBuf - sizeof(READ_RSP);
+
+	rsize = ctx->rsize ? ctx->rsize : defsize;
+
+	/*
+	 * no CAP_LARGE_READ_X? Then MS-CIFS states that we must limit this to
+	 * the client's MaxBufferSize.
+	 */
+	if (!(server->capabilities & CAP_LARGE_READ_X))
+		rsize = min_t(unsigned int, CIFSMaxBufSize, rsize);
+
+	/* hard limit of CIFS_MAX_RSIZE */
+	rsize = min_t(unsigned int, rsize, CIFS_MAX_RSIZE);
+
+	return rsize;
+}
+
+static void
+cifs_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon,
+	      struct cifs_sb_info *cifs_sb)
+{
+	CIFSSMBQFSDeviceInfo(xid, tcon);
+	CIFSSMBQFSAttributeInfo(xid, tcon);
+}
+
+static int
+cifs_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
+			struct cifs_sb_info *cifs_sb, const char *full_path)
+{
+	int rc;
+	FILE_ALL_INFO *file_info;
+
+	file_info = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
+	if (file_info == NULL)
+		return -ENOMEM;
+
+	rc = CIFSSMBQPathInfo(xid, tcon, full_path, file_info,
+			      0 /* not legacy */, cifs_sb->local_nls,
+			      cifs_remap(cifs_sb));
+
+	if (rc == -EOPNOTSUPP || rc == -EINVAL)
+		rc = SMBQueryInformation(xid, tcon, full_path, file_info,
+				cifs_sb->local_nls, cifs_remap(cifs_sb));
+	kfree(file_info);
+	return rc;
+}
+
+static int
+cifs_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
+		     struct cifs_sb_info *cifs_sb, const char *full_path,
+		     FILE_ALL_INFO *data, bool *adjustTZ, bool *symlink)
+{
+	int rc;
+
+	*symlink = false;
+
+	/* could do find first instead but this returns more info */
+	rc = CIFSSMBQPathInfo(xid, tcon, full_path, data, 0 /* not legacy */,
+			      cifs_sb->local_nls, cifs_remap(cifs_sb));
+	/*
+	 * BB optimize code so we do not make the above call when server claims
+	 * no NT SMB support and the above call failed at least once - set flag
+	 * in tcon or mount.
+	 */
+	if ((rc == -EOPNOTSUPP) || (rc == -EINVAL)) {
+		rc = SMBQueryInformation(xid, tcon, full_path, data,
+					 cifs_sb->local_nls,
+					 cifs_remap(cifs_sb));
+		*adjustTZ = true;
+	}
+
+	if (!rc && (le32_to_cpu(data->Attributes) & ATTR_REPARSE)) {
+		int tmprc;
+		int oplock = 0;
+		struct cifs_fid fid;
+		struct cifs_open_parms oparms;
+
+		oparms.tcon = tcon;
+		oparms.cifs_sb = cifs_sb;
+		oparms.desired_access = FILE_READ_ATTRIBUTES;
+		oparms.create_options = cifs_create_options(cifs_sb, 0);
+		oparms.disposition = FILE_OPEN;
+		oparms.path = full_path;
+		oparms.fid = &fid;
+		oparms.reconnect = false;
+
+		/* Need to check if this is a symbolic link or not */
+		tmprc = CIFS_open(xid, &oparms, &oplock, NULL);
+		if (tmprc == -EOPNOTSUPP)
+			*symlink = true;
+		else if (tmprc == 0)
+			CIFSSMBClose(xid, tcon, fid.netfid);
+	}
+
+	return rc;
+}
+
+static int
+cifs_get_srv_inum(const unsigned int xid, struct cifs_tcon *tcon,
+		  struct cifs_sb_info *cifs_sb, const char *full_path,
+		  u64 *uniqueid, FILE_ALL_INFO *data)
+{
+	/*
+	 * We can not use the IndexNumber field by default from Windows or
+	 * Samba (in ALL_INFO buf) but we can request it explicitly. The SNIA
+	 * CIFS spec claims that this value is unique within the scope of a
+	 * share, and the windows docs hint that it's actually unique
+	 * per-machine.
+	 *
+	 * There may be higher info levels that work but are there Windows
+	 * server or network appliances for which IndexNumber field is not
+	 * guaranteed unique?
+	 */
+	return CIFSGetSrvInodeNumber(xid, tcon, full_path, uniqueid,
+				     cifs_sb->local_nls,
+				     cifs_remap(cifs_sb));
+}
+
+static int
+cifs_query_file_info(const unsigned int xid, struct cifs_tcon *tcon,
+		     struct cifs_fid *fid, FILE_ALL_INFO *data)
+{
+	return CIFSSMBQFileInfo(xid, tcon, fid->netfid, data);
+}
+
+static void
+cifs_clear_stats(struct cifs_tcon *tcon)
+{
+	atomic_set(&tcon->stats.cifs_stats.num_writes, 0);
+	atomic_set(&tcon->stats.cifs_stats.num_reads, 0);
+	atomic_set(&tcon->stats.cifs_stats.num_flushes, 0);
+	atomic_set(&tcon->stats.cifs_stats.num_oplock_brks, 0);
+	atomic_set(&tcon->stats.cifs_stats.num_opens, 0);
+	atomic_set(&tcon->stats.cifs_stats.num_posixopens, 0);
+	atomic_set(&tcon->stats.cifs_stats.num_posixmkdirs, 0);
+	atomic_set(&tcon->stats.cifs_stats.num_closes, 0);
+	atomic_set(&tcon->stats.cifs_stats.num_deletes, 0);
+	atomic_set(&tcon->stats.cifs_stats.num_mkdirs, 0);
+	atomic_set(&tcon->stats.cifs_stats.num_rmdirs, 0);
+	atomic_set(&tcon->stats.cifs_stats.num_renames, 0);
+	atomic_set(&tcon->stats.cifs_stats.num_t2renames, 0);
+	atomic_set(&tcon->stats.cifs_stats.num_ffirst, 0);
+	atomic_set(&tcon->stats.cifs_stats.num_fnext, 0);
+	atomic_set(&tcon->stats.cifs_stats.num_fclose, 0);
+	atomic_set(&tcon->stats.cifs_stats.num_hardlinks, 0);
+	atomic_set(&tcon->stats.cifs_stats.num_symlinks, 0);
+	atomic_set(&tcon->stats.cifs_stats.num_locks, 0);
+	atomic_set(&tcon->stats.cifs_stats.num_acl_get, 0);
+	atomic_set(&tcon->stats.cifs_stats.num_acl_set, 0);
+}
+
+static void
+cifs_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
+{
+	seq_printf(m, " Oplocks breaks: %d",
+		   atomic_read(&tcon->stats.cifs_stats.num_oplock_brks));
+	seq_printf(m, "\nReads:  %d Bytes: %llu",
+		   atomic_read(&tcon->stats.cifs_stats.num_reads),
+		   (long long)(tcon->bytes_read));
+	seq_printf(m, "\nWrites: %d Bytes: %llu",
+		   atomic_read(&tcon->stats.cifs_stats.num_writes),
+		   (long long)(tcon->bytes_written));
+	seq_printf(m, "\nFlushes: %d",
+		   atomic_read(&tcon->stats.cifs_stats.num_flushes));
+	seq_printf(m, "\nLocks: %d HardLinks: %d Symlinks: %d",
+		   atomic_read(&tcon->stats.cifs_stats.num_locks),
+		   atomic_read(&tcon->stats.cifs_stats.num_hardlinks),
+		   atomic_read(&tcon->stats.cifs_stats.num_symlinks));
+	seq_printf(m, "\nOpens: %d Closes: %d Deletes: %d",
+		   atomic_read(&tcon->stats.cifs_stats.num_opens),
+		   atomic_read(&tcon->stats.cifs_stats.num_closes),
+		   atomic_read(&tcon->stats.cifs_stats.num_deletes));
+	seq_printf(m, "\nPosix Opens: %d Posix Mkdirs: %d",
+		   atomic_read(&tcon->stats.cifs_stats.num_posixopens),
+		   atomic_read(&tcon->stats.cifs_stats.num_posixmkdirs));
+	seq_printf(m, "\nMkdirs: %d Rmdirs: %d",
+		   atomic_read(&tcon->stats.cifs_stats.num_mkdirs),
+		   atomic_read(&tcon->stats.cifs_stats.num_rmdirs));
+	seq_printf(m, "\nRenames: %d T2 Renames %d",
+		   atomic_read(&tcon->stats.cifs_stats.num_renames),
+		   atomic_read(&tcon->stats.cifs_stats.num_t2renames));
+	seq_printf(m, "\nFindFirst: %d FNext %d FClose %d",
+		   atomic_read(&tcon->stats.cifs_stats.num_ffirst),
+		   atomic_read(&tcon->stats.cifs_stats.num_fnext),
+		   atomic_read(&tcon->stats.cifs_stats.num_fclose));
+}
+
+static void
+cifs_mkdir_setinfo(struct inode *inode, const char *full_path,
+		   struct cifs_sb_info *cifs_sb, struct cifs_tcon *tcon,
+		   const unsigned int xid)
+{
+	FILE_BASIC_INFO info;
+	struct cifsInodeInfo *cifsInode;
+	u32 dosattrs;
+	int rc;
+
+	memset(&info, 0, sizeof(info));
+	cifsInode = CIFS_I(inode);
+	dosattrs = cifsInode->cifsAttrs|ATTR_READONLY;
+	info.Attributes = cpu_to_le32(dosattrs);
+	rc = CIFSSMBSetPathInfo(xid, tcon, full_path, &info, cifs_sb->local_nls,
+				cifs_sb);
+	if (rc == 0)
+		cifsInode->cifsAttrs = dosattrs;
+}
+
+static int
+cifs_open_file(const unsigned int xid, struct cifs_open_parms *oparms,
+	       __u32 *oplock, FILE_ALL_INFO *buf)
+{
+	if (!(oparms->tcon->ses->capabilities & CAP_NT_SMBS))
+		return SMBLegacyOpen(xid, oparms->tcon, oparms->path,
+				     oparms->disposition,
+				     oparms->desired_access,
+				     oparms->create_options,
+				     &oparms->fid->netfid, oplock, buf,
+				     oparms->cifs_sb->local_nls,
+				     cifs_remap(oparms->cifs_sb));
+	return CIFS_open(xid, oparms, oplock, buf);
+}
+
+static void
+cifs_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock)
+{
+	struct cifsInodeInfo *cinode = CIFS_I(d_inode(cfile->dentry));
+	cfile->fid.netfid = fid->netfid;
+	cifs_set_oplock_level(cinode, oplock);
+	cinode->can_cache_brlcks = CIFS_CACHE_WRITE(cinode);
+}
+
+static void
+cifs_close_file(const unsigned int xid, struct cifs_tcon *tcon,
+		struct cifs_fid *fid)
+{
+	CIFSSMBClose(xid, tcon, fid->netfid);
+}
+
+static int
+cifs_flush_file(const unsigned int xid, struct cifs_tcon *tcon,
+		struct cifs_fid *fid)
+{
+	return CIFSSMBFlush(xid, tcon, fid->netfid);
+}
+
+static int
+cifs_sync_read(const unsigned int xid, struct cifs_fid *pfid,
+	       struct cifs_io_parms *parms, unsigned int *bytes_read,
+	       char **buf, int *buf_type)
+{
+	parms->netfid = pfid->netfid;
+	return CIFSSMBRead(xid, parms, bytes_read, buf, buf_type);
+}
+
+static int
+cifs_sync_write(const unsigned int xid, struct cifs_fid *pfid,
+		struct cifs_io_parms *parms, unsigned int *written,
+		struct kvec *iov, unsigned long nr_segs)
+{
+
+	parms->netfid = pfid->netfid;
+	return CIFSSMBWrite2(xid, parms, written, iov, nr_segs);
+}
+
+static int
+smb_set_file_info(struct inode *inode, const char *full_path,
+		  FILE_BASIC_INFO *buf, const unsigned int xid)
+{
+	int oplock = 0;
+	int rc;
+	__u32 netpid;
+	struct cifs_fid fid;
+	struct cifs_open_parms oparms;
+	struct cifsFileInfo *open_file;
+	struct cifsInodeInfo *cinode = CIFS_I(inode);
+	struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
+	struct tcon_link *tlink = NULL;
+	struct cifs_tcon *tcon;
+
+	/* if the file is already open for write, just use that fileid */
+	open_file = find_writable_file(cinode, FIND_WR_FSUID_ONLY);
+	if (open_file) {
+		fid.netfid = open_file->fid.netfid;
+		netpid = open_file->pid;
+		tcon = tlink_tcon(open_file->tlink);
+		goto set_via_filehandle;
+	}
+
+	tlink = cifs_sb_tlink(cifs_sb);
+	if (IS_ERR(tlink)) {
+		rc = PTR_ERR(tlink);
+		tlink = NULL;
+		goto out;
+	}
+	tcon = tlink_tcon(tlink);
+
+	rc = CIFSSMBSetPathInfo(xid, tcon, full_path, buf, cifs_sb->local_nls,
+				cifs_sb);
+	if (rc == 0) {
+		cinode->cifsAttrs = le32_to_cpu(buf->Attributes);
+		goto out;
+	} else if (rc != -EOPNOTSUPP && rc != -EINVAL) {
+		goto out;
+	}
+
+	oparms.tcon = tcon;
+	oparms.cifs_sb = cifs_sb;
+	oparms.desired_access = SYNCHRONIZE | FILE_WRITE_ATTRIBUTES;
+	oparms.create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR);
+	oparms.disposition = FILE_OPEN;
+	oparms.path = full_path;
+	oparms.fid = &fid;
+	oparms.reconnect = false;
+
+	cifs_dbg(FYI, "calling SetFileInfo since SetPathInfo for times not supported by this server\n");
+	rc = CIFS_open(xid, &oparms, &oplock, NULL);
+	if (rc != 0) {
+		if (rc == -EIO)
+			rc = -EINVAL;
+		goto out;
+	}
+
+	netpid = current->tgid;
+
+set_via_filehandle:
+	rc = CIFSSMBSetFileInfo(xid, tcon, buf, fid.netfid, netpid);
+	if (!rc)
+		cinode->cifsAttrs = le32_to_cpu(buf->Attributes);
+
+	if (open_file == NULL)
+		CIFSSMBClose(xid, tcon, fid.netfid);
+	else
+		cifsFileInfo_put(open_file);
+out:
+	if (tlink != NULL)
+		cifs_put_tlink(tlink);
+	return rc;
+}
+
+static int
+cifs_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
+		   struct cifsFileInfo *cfile)
+{
+	return CIFSSMB_set_compression(xid, tcon, cfile->fid.netfid);
+}
+
+static int
+cifs_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
+		     const char *path, struct cifs_sb_info *cifs_sb,
+		     struct cifs_fid *fid, __u16 search_flags,
+		     struct cifs_search_info *srch_inf)
+{
+	int rc;
+
+	rc = CIFSFindFirst(xid, tcon, path, cifs_sb,
+			   &fid->netfid, search_flags, srch_inf, true);
+	if (rc)
+		cifs_dbg(FYI, "find first failed=%d\n", rc);
+	return rc;
+}
+
+static int
+cifs_query_dir_next(const unsigned int xid, struct cifs_tcon *tcon,
+		    struct cifs_fid *fid, __u16 search_flags,
+		    struct cifs_search_info *srch_inf)
+{
+	return CIFSFindNext(xid, tcon, fid->netfid, search_flags, srch_inf);
+}
+
+static int
+cifs_close_dir(const unsigned int xid, struct cifs_tcon *tcon,
+	       struct cifs_fid *fid)
+{
+	return CIFSFindClose(xid, tcon, fid->netfid);
+}
+
+static int
+cifs_oplock_response(struct cifs_tcon *tcon, __u64 persistent_fid,
+		__u64 volatile_fid, __u16 net_fid, struct cifsInodeInfo *cinode)
+{
+	return CIFSSMBLock(0, tcon, net_fid, current->tgid, 0, 0, 0, 0,
+			   LOCKING_ANDX_OPLOCK_RELEASE, false, CIFS_CACHE_READ(cinode) ? 1 : 0);
+}
+
+static int
+cifs_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
+	     struct cifs_sb_info *cifs_sb, struct kstatfs *buf)
+{
+	int rc = -EOPNOTSUPP;
+
+	buf->f_type = CIFS_MAGIC_NUMBER;
+
+	/*
+	 * We could add a second check for a QFS Unix capability bit
+	 */
+	if ((tcon->ses->capabilities & CAP_UNIX) &&
+	    (CIFS_POSIX_EXTENSIONS & le64_to_cpu(tcon->fsUnixInfo.Capability)))
+		rc = CIFSSMBQFSPosixInfo(xid, tcon, buf);
+
+	/*
+	 * Only need to call the old QFSInfo if failed on newer one,
+	 * e.g. by OS/2.
+	 **/
+	if (rc && (tcon->ses->capabilities & CAP_NT_SMBS))
+		rc = CIFSSMBQFSInfo(xid, tcon, buf);
+
+	/*
+	 * Some old Windows servers also do not support level 103, retry with
+	 * older level one if old server failed the previous call or we
+	 * bypassed it because we detected that this was an older LANMAN sess
+	 */
+	if (rc)
+		rc = SMBOldQFSInfo(xid, tcon, buf);
+	return rc;
+}
+
+static int
+cifs_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset,
+	       __u64 length, __u32 type, int lock, int unlock, bool wait)
+{
+	return CIFSSMBLock(xid, tlink_tcon(cfile->tlink), cfile->fid.netfid,
+			   current->tgid, length, offset, unlock, lock,
+			   (__u8)type, wait, 0);
+}
+
+static int
+cifs_unix_dfs_readlink(const unsigned int xid, struct cifs_tcon *tcon,
+		       const unsigned char *searchName, char **symlinkinfo,
+		       const struct nls_table *nls_codepage)
+{
+#ifdef CONFIG_CIFS_DFS_UPCALL
+	int rc;
+	struct dfs_info3_param referral = {0};
+
+	rc = get_dfs_path(xid, tcon->ses, searchName, nls_codepage, &referral,
+			  0);
+
+	if (!rc) {
+		*symlinkinfo = kstrdup(referral.node_name, GFP_KERNEL);
+		free_dfs_info_param(&referral);
+		if (!*symlinkinfo)
+			rc = -ENOMEM;
+	}
+	return rc;
+#else /* No DFS support */
+	return -EREMOTE;
+#endif
+}
+
+static int
+cifs_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
+		   struct cifs_sb_info *cifs_sb, const char *full_path,
+		   char **target_path, bool is_reparse_point)
+{
+	int rc;
+	int oplock = 0;
+	struct cifs_fid fid;
+	struct cifs_open_parms oparms;
+
+	cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path);
+
+	if (is_reparse_point) {
+		cifs_dbg(VFS, "reparse points not handled for SMB1 symlinks\n");
+		return -EOPNOTSUPP;
+	}
+
+	/* Check for unix extensions */
+	if (cap_unix(tcon->ses)) {
+		rc = CIFSSMBUnixQuerySymLink(xid, tcon, full_path, target_path,
+					     cifs_sb->local_nls,
+					     cifs_remap(cifs_sb));
+		if (rc == -EREMOTE)
+			rc = cifs_unix_dfs_readlink(xid, tcon, full_path,
+						    target_path,
+						    cifs_sb->local_nls);
+
+		goto out;
+	}
+
+	oparms.tcon = tcon;
+	oparms.cifs_sb = cifs_sb;
+	oparms.desired_access = FILE_READ_ATTRIBUTES;
+	oparms.create_options = cifs_create_options(cifs_sb,
+						    OPEN_REPARSE_POINT);
+	oparms.disposition = FILE_OPEN;
+	oparms.path = full_path;
+	oparms.fid = &fid;
+	oparms.reconnect = false;
+
+	rc = CIFS_open(xid, &oparms, &oplock, NULL);
+	if (rc)
+		goto out;
+
+	rc = CIFSSMBQuerySymLink(xid, tcon, fid.netfid, target_path,
+				 cifs_sb->local_nls);
+	if (rc)
+		goto out_close;
+
+	convert_delimiter(*target_path, '/');
+out_close:
+	CIFSSMBClose(xid, tcon, fid.netfid);
+out:
+	if (!rc)
+		cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
+	return rc;
+}
+
+static bool
+cifs_is_read_op(__u32 oplock)
+{
+	return oplock == OPLOCK_READ;
+}
+
+static unsigned int
+cifs_wp_retry_size(struct inode *inode)
+{
+	return CIFS_SB(inode->i_sb)->ctx->wsize;
+}
+
+static bool
+cifs_dir_needs_close(struct cifsFileInfo *cfile)
+{
+	return !cfile->srch_inf.endOfSearch && !cfile->invalidHandle;
+}
+
+static bool
+cifs_can_echo(struct TCP_Server_Info *server)
+{
+	if (server->tcpStatus == CifsGood)
+		return true;
+
+	return false;
+}
+
+static int
+cifs_make_node(unsigned int xid, struct inode *inode,
+	       struct dentry *dentry, struct cifs_tcon *tcon,
+	       const char *full_path, umode_t mode, dev_t dev)
+{
+	struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
+	struct inode *newinode = NULL;
+	int rc = -EPERM;
+	FILE_ALL_INFO *buf = NULL;
+	struct cifs_io_parms io_parms;
+	__u32 oplock = 0;
+	struct cifs_fid fid;
+	struct cifs_open_parms oparms;
+	unsigned int bytes_written;
+	struct win_dev *pdev;
+	struct kvec iov[2];
+
+	if (tcon->unix_ext) {
+		/*
+		 * SMB1 Unix Extensions: requires server support but
+		 * works with all special files
+		 */
+		struct cifs_unix_set_info_args args = {
+			.mode	= mode & ~current_umask(),
+			.ctime	= NO_CHANGE_64,
+			.atime	= NO_CHANGE_64,
+			.mtime	= NO_CHANGE_64,
+			.device	= dev,
+		};
+		if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
+			args.uid = current_fsuid();
+			args.gid = current_fsgid();
+		} else {
+			args.uid = INVALID_UID; /* no change */
+			args.gid = INVALID_GID; /* no change */
+		}
+		rc = CIFSSMBUnixSetPathInfo(xid, tcon, full_path, &args,
+					    cifs_sb->local_nls,
+					    cifs_remap(cifs_sb));
+		if (rc)
+			goto out;
+
+		rc = cifs_get_inode_info_unix(&newinode, full_path,
+					      inode->i_sb, xid);
+
+		if (rc == 0)
+			d_instantiate(dentry, newinode);
+		goto out;
+	}
+
+	/*
+	 * SMB1 SFU emulation: should work with all servers, but only
+	 * support block and char device (no socket & fifo)
+	 */
+	if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL))
+		goto out;
+
+	if (!S_ISCHR(mode) && !S_ISBLK(mode))
+		goto out;
+
+	cifs_dbg(FYI, "sfu compat create special file\n");
+
+	buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
+	if (buf == NULL) {
+		rc = -ENOMEM;
+		goto out;
+	}
+
+	oparms.tcon = tcon;
+	oparms.cifs_sb = cifs_sb;
+	oparms.desired_access = GENERIC_WRITE;
+	oparms.create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR |
+						    CREATE_OPTION_SPECIAL);
+	oparms.disposition = FILE_CREATE;
+	oparms.path = full_path;
+	oparms.fid = &fid;
+	oparms.reconnect = false;
+
+	if (tcon->ses->server->oplocks)
+		oplock = REQ_OPLOCK;
+	else
+		oplock = 0;
+	rc = tcon->ses->server->ops->open(xid, &oparms, &oplock, buf);
+	if (rc)
+		goto out;
+
+	/*
+	 * BB Do not bother to decode buf since no local inode yet to put
+	 * timestamps in, but we can reuse it safely.
+	 */
+
+	pdev = (struct win_dev *)buf;
+	io_parms.pid = current->tgid;
+	io_parms.tcon = tcon;
+	io_parms.offset = 0;
+	io_parms.length = sizeof(struct win_dev);
+	iov[1].iov_base = buf;
+	iov[1].iov_len = sizeof(struct win_dev);
+	if (S_ISCHR(mode)) {
+		memcpy(pdev->type, "IntxCHR", 8);
+		pdev->major = cpu_to_le64(MAJOR(dev));
+		pdev->minor = cpu_to_le64(MINOR(dev));
+		rc = tcon->ses->server->ops->sync_write(xid, &fid, &io_parms,
+							&bytes_written, iov, 1);
+	} else if (S_ISBLK(mode)) {
+		memcpy(pdev->type, "IntxBLK", 8);
+		pdev->major = cpu_to_le64(MAJOR(dev));
+		pdev->minor = cpu_to_le64(MINOR(dev));
+		rc = tcon->ses->server->ops->sync_write(xid, &fid, &io_parms,
+							&bytes_written, iov, 1);
+	}
+	tcon->ses->server->ops->close(xid, tcon, &fid);
+	d_drop(dentry);
+
+	/* FIXME: add code here to set EAs */
+out:
+	kfree(buf);
+	return rc;
+}
+
+
+
+struct smb_version_operations smb1_operations = {
+	.send_cancel = send_nt_cancel,
+	.compare_fids = cifs_compare_fids,
+	.setup_request = cifs_setup_request,
+	.setup_async_request = cifs_setup_async_request,
+	.check_receive = cifs_check_receive,
+	.add_credits = cifs_add_credits,
+	.set_credits = cifs_set_credits,
+	.get_credits_field = cifs_get_credits_field,
+	.get_credits = cifs_get_credits,
+	.wait_mtu_credits = cifs_wait_mtu_credits,
+	.get_next_mid = cifs_get_next_mid,
+	.read_data_offset = cifs_read_data_offset,
+	.read_data_length = cifs_read_data_length,
+	.map_error = map_smb_to_linux_error,
+	.find_mid = cifs_find_mid,
+	.check_message = checkSMB,
+	.dump_detail = cifs_dump_detail,
+	.clear_stats = cifs_clear_stats,
+	.print_stats = cifs_print_stats,
+	.is_oplock_break = is_valid_oplock_break,
+	.downgrade_oplock = cifs_downgrade_oplock,
+	.check_trans2 = cifs_check_trans2,
+	.need_neg = cifs_need_neg,
+	.negotiate = cifs_negotiate,
+	.negotiate_wsize = cifs_negotiate_wsize,
+	.negotiate_rsize = cifs_negotiate_rsize,
+	.sess_setup = CIFS_SessSetup,
+	.logoff = CIFSSMBLogoff,
+	.tree_connect = CIFSTCon,
+	.tree_disconnect = CIFSSMBTDis,
+	.get_dfs_refer = CIFSGetDFSRefer,
+	.qfs_tcon = cifs_qfs_tcon,
+	.is_path_accessible = cifs_is_path_accessible,
+	.can_echo = cifs_can_echo,
+	.query_path_info = cifs_query_path_info,
+	.query_file_info = cifs_query_file_info,
+	.get_srv_inum = cifs_get_srv_inum,
+	.set_path_size = CIFSSMBSetEOF,
+	.set_file_size = CIFSSMBSetFileSize,
+	.set_file_info = smb_set_file_info,
+	.set_compression = cifs_set_compression,
+	.echo = CIFSSMBEcho,
+	.mkdir = CIFSSMBMkDir,
+	.mkdir_setinfo = cifs_mkdir_setinfo,
+	.rmdir = CIFSSMBRmDir,
+	.unlink = CIFSSMBDelFile,
+	.rename_pending_delete = cifs_rename_pending_delete,
+	.rename = CIFSSMBRename,
+	.create_hardlink = CIFSCreateHardLink,
+	.query_symlink = cifs_query_symlink,
+	.open = cifs_open_file,
+	.set_fid = cifs_set_fid,
+	.close = cifs_close_file,
+	.flush = cifs_flush_file,
+	.async_readv = cifs_async_readv,
+	.async_writev = cifs_async_writev,
+	.sync_read = cifs_sync_read,
+	.sync_write = cifs_sync_write,
+	.query_dir_first = cifs_query_dir_first,
+	.query_dir_next = cifs_query_dir_next,
+	.close_dir = cifs_close_dir,
+	.calc_smb_size = smbCalcSize,
+	.oplock_response = cifs_oplock_response,
+	.queryfs = cifs_queryfs,
+	.mand_lock = cifs_mand_lock,
+	.mand_unlock_range = cifs_unlock_range,
+	.push_mand_locks = cifs_push_mandatory_locks,
+	.query_mf_symlink = cifs_query_mf_symlink,
+	.create_mf_symlink = cifs_create_mf_symlink,
+	.is_read_op = cifs_is_read_op,
+	.wp_retry_size = cifs_wp_retry_size,
+	.dir_needs_close = cifs_dir_needs_close,
+	.select_sectype = cifs_select_sectype,
+#ifdef CONFIG_CIFS_XATTR
+	.query_all_EAs = CIFSSMBQAllEAs,
+	.set_EA = CIFSSMBSetEA,
+#endif /* CIFS_XATTR */
+	.get_acl = get_cifs_acl,
+	.get_acl_by_fid = get_cifs_acl_by_fid,
+	.set_acl = set_cifs_acl,
+	.make_node = cifs_make_node,
+};
+
+struct smb_version_values smb1_values = {
+	.version_string = SMB1_VERSION_STRING,
+	.protocol_id = SMB10_PROT_ID,
+	.large_lock_type = LOCKING_ANDX_LARGE_FILES,
+	.exclusive_lock_type = 0,
+	.shared_lock_type = LOCKING_ANDX_SHARED_LOCK,
+	.unlock_lock_type = 0,
+	.header_preamble_size = 4,
+	.header_size = sizeof(struct smb_hdr),
+	.max_header_size = MAX_CIFS_HDR_SIZE,
+	.read_rsp_size = sizeof(READ_RSP),
+	.lock_cmd = cpu_to_le16(SMB_COM_LOCKING_ANDX),
+	.cap_unix = CAP_UNIX,
+	.cap_nt_find = CAP_NT_SMBS | CAP_NT_FIND,
+	.cap_large_files = CAP_LARGE_FILES,
+	.signing_enabled = SECMODE_SIGN_ENABLED,
+	.signing_required = SECMODE_SIGN_REQUIRED,
+};
-- 
2.53.0