fs/cifs/smb2pdu.h - kernel/msm-4.9 - Gitiles

 /*
  *   fs/cifs/smb2pdu.h
  *
  *   Copyright (c) International Business Machines  Corp., 2009, 2010
  *                 Etersoft, 2012
  *   Author(s): Steve French (sfrench@us.ibm.com)
  *              Pavel Shilovsky (pshilovsky@samba.org) 2012
  *
  *   This library is free software; you can redistribute it and/or modify
  *   it under the terms of the GNU Lesser General Public License as published
  *   by the Free Software Foundation; either version 2.1 of the License, or
  *   (at your option) any later version.
  *
  *   This library is distributed in the hope that it will be useful,
  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
  *   the GNU Lesser General Public License for more details.
  *
  *   You should have received a copy of the GNU Lesser General Public License
  *   along with this library; if not, write to the Free Software
  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  */

 #ifndef _SMB2PDU_H
 #define _SMB2PDU_H

 #include <net/sock.h>

 /*
  * Note that, due to trying to use names similar to the protocol specifications,
  * there are many mixed case field names in the structures below.  Although
  * this does not match typical Linux kernel style, it is necessary to be
  * be able to match against the protocol specfication.
  *
  * SMB2 commands
  * Some commands have minimal (wct=0,bcc=0), or uninteresting, responses
  * (ie no useful data other than the SMB error code itself) and are marked such.
  * Knowing this helps avoid response buffer allocations and copy in some cases.
  */

 /* List of commands in host endian */
 #define SMB2_NEGOTIATE_HE	0x0000
 #define SMB2_SESSION_SETUP_HE	0x0001
 #define SMB2_LOGOFF_HE		0x0002 /* trivial request/resp */
 #define SMB2_TREE_CONNECT_HE	0x0003
 #define SMB2_TREE_DISCONNECT_HE	0x0004 /* trivial req/resp */
 #define SMB2_CREATE_HE		0x0005
 #define SMB2_CLOSE_HE		0x0006
 #define SMB2_FLUSH_HE		0x0007 /* trivial resp */
 #define SMB2_READ_HE		0x0008
 #define SMB2_WRITE_HE		0x0009
 #define SMB2_LOCK_HE		0x000A
 #define SMB2_IOCTL_HE		0x000B
 #define SMB2_CANCEL_HE		0x000C
 #define SMB2_ECHO_HE		0x000D
 #define SMB2_QUERY_DIRECTORY_HE	0x000E
 #define SMB2_CHANGE_NOTIFY_HE	0x000F
 #define SMB2_QUERY_INFO_HE	0x0010
 #define SMB2_SET_INFO_HE	0x0011
 #define SMB2_OPLOCK_BREAK_HE	0x0012

 /* The same list in little endian */
 #define SMB2_NEGOTIATE		cpu_to_le16(SMB2_NEGOTIATE_HE)
 #define SMB2_SESSION_SETUP	cpu_to_le16(SMB2_SESSION_SETUP_HE)
 #define SMB2_LOGOFF		cpu_to_le16(SMB2_LOGOFF_HE)
 #define SMB2_TREE_CONNECT	cpu_to_le16(SMB2_TREE_CONNECT_HE)
 #define SMB2_TREE_DISCONNECT	cpu_to_le16(SMB2_TREE_DISCONNECT_HE)
 #define SMB2_CREATE		cpu_to_le16(SMB2_CREATE_HE)
 #define SMB2_CLOSE		cpu_to_le16(SMB2_CLOSE_HE)
 #define SMB2_FLUSH		cpu_to_le16(SMB2_FLUSH_HE)
 #define SMB2_READ		cpu_to_le16(SMB2_READ_HE)
 #define SMB2_WRITE		cpu_to_le16(SMB2_WRITE_HE)
 #define SMB2_LOCK		cpu_to_le16(SMB2_LOCK_HE)
 #define SMB2_IOCTL		cpu_to_le16(SMB2_IOCTL_HE)
 #define SMB2_CANCEL		cpu_to_le16(SMB2_CANCEL_HE)
 #define SMB2_ECHO		cpu_to_le16(SMB2_ECHO_HE)
 #define SMB2_QUERY_DIRECTORY	cpu_to_le16(SMB2_QUERY_DIRECTORY_HE)
 #define SMB2_CHANGE_NOTIFY	cpu_to_le16(SMB2_CHANGE_NOTIFY_HE)
 #define SMB2_QUERY_INFO		cpu_to_le16(SMB2_QUERY_INFO_HE)
 #define SMB2_SET_INFO		cpu_to_le16(SMB2_SET_INFO_HE)
 #define SMB2_OPLOCK_BREAK	cpu_to_le16(SMB2_OPLOCK_BREAK_HE)

 #define NUMBER_OF_SMB2_COMMANDS	0x0013

 /* BB FIXME - analyze following length BB */
 #define MAX_SMB2_HDR_SIZE 0x78 /* 4 len + 64 hdr + (2*24 wct) + 2 bct + 2 pad */

 #define SMB2_PROTO_NUMBER __constant_cpu_to_le32(0x424d53fe)

 /*
  * SMB2 Header Definition
  *
  * "MBZ" :  Must be Zero
  * "BB"  :  BugBug, Something to check/review/analyze later
  * "PDU" :  "Protocol Data Unit" (ie a network "frame")
  *
  */

 #define SMB2_HEADER_STRUCTURE_SIZE __constant_le16_to_cpu(64)

 struct smb2_hdr {
 	__be32 smb2_buf_length;	/* big endian on wire */
 				/* length is only two or three bytes - with
 				 one or two byte type preceding it that MBZ */
 	__u8   ProtocolId[4];	/* 0xFE 'S' 'M' 'B' */
 	__le16 StructureSize;	/* 64 */
 	__le16 CreditCharge;	/* MBZ */
 	__le32 Status;		/* Error from server */
 	__le16 Command;
 	__le16 CreditRequest;  /* CreditResponse */
 	__le32 Flags;
 	__le32 NextCommand;
 	__u64  MessageId;	/* opaque - so can stay little endian */
 	__le32 ProcessId;
 	__u32  TreeId;		/* opaque - so do not make little endian */
 	__u64  SessionId;	/* opaque - so do not make little endian */
 	__u8   Signature[16];
 } __packed;

 struct smb2_pdu {
 	struct smb2_hdr hdr;
 	__le16 StructureSize2; /* size of wct area (varies, request specific) */
 } __packed;

 /*
  *	SMB2 flag definitions
  */
 #define SMB2_FLAGS_SERVER_TO_REDIR	__constant_cpu_to_le32(0x00000001)
 #define SMB2_FLAGS_ASYNC_COMMAND	__constant_cpu_to_le32(0x00000002)
 #define SMB2_FLAGS_RELATED_OPERATIONS	__constant_cpu_to_le32(0x00000004)
 #define SMB2_FLAGS_SIGNED		__constant_cpu_to_le32(0x00000008)
 #define SMB2_FLAGS_DFS_OPERATIONS	__constant_cpu_to_le32(0x10000000)

 /*
  *	Definitions for SMB2 Protocol Data Units (network frames)
  *
  *  See MS-SMB2.PDF specification for protocol details.
  *  The Naming convention is the lower case version of the SMB2
  *  command code name for the struct. Note that structures must be packed.
  *
  */

 #define SMB2_ERROR_STRUCTURE_SIZE2 __constant_le16_to_cpu(9)

 struct smb2_err_rsp {
 	struct smb2_hdr hdr;
 	__le16 StructureSize;
 	__le16 Reserved; /* MBZ */
 	__le32 ByteCount;  /* even if zero, at least one byte follows */
 	__u8   ErrorData[1];  /* variable length */
 } __packed;

 struct smb2_negotiate_req {
 	struct smb2_hdr hdr;
 	__le16 StructureSize; /* Must be 36 */
 	__le16 DialectCount;
 	__le16 SecurityMode;
 	__le16 Reserved;	/* MBZ */
 	__le32 Capabilities;
 	__u8   ClientGUID[16];	/* MBZ */
 	__le64 ClientStartTime;	/* MBZ */
 	__le16 Dialects[2]; /* variable length */
 } __packed;

 /* SecurityMode flags */
 #define	SMB2_NEGOTIATE_SIGNING_ENABLED	0x0001
 #define SMB2_NEGOTIATE_SIGNING_REQUIRED	0x0002
 /* Capabilities flags */
 #define SMB2_GLOBAL_CAP_DFS		0x00000001
 #define SMB2_GLOBAL_CAP_LEASING		0x00000002 /* Resp only New to SMB2.1 */
 #define SMB2_GLOBAL_CAP_LARGE_MTU	0X00000004 /* Resp only New to SMB2.1 */
 /* Internal types */
 #define SMB2_NT_FIND			0x00100000
 #define SMB2_LARGE_FILES		0x00200000

 struct smb2_negotiate_rsp {
 	struct smb2_hdr hdr;
 	__le16 StructureSize;	/* Must be 65 */
 	__le16 SecurityMode;
 	__le16 DialectRevision;
 	__le16 Reserved;	/* MBZ */
 	__u8   ServerGUID[16];
 	__le32 Capabilities;
 	__le32 MaxTransactSize;
 	__le32 MaxReadSize;
 	__le32 MaxWriteSize;
 	__le64 SystemTime;	/* MBZ */
 	__le64 ServerStartTime;
 	__le16 SecurityBufferOffset;
 	__le16 SecurityBufferLength;
 	__le32 Reserved2;	/* may be any value, ignore */
 	__u8   Buffer[1];	/* variable length GSS security buffer */
 } __packed;

 struct smb2_sess_setup_req {
 	struct smb2_hdr hdr;
 	__le16 StructureSize; /* Must be 25 */
 	__u8   VcNumber;
 	__u8   SecurityMode;
 	__le32 Capabilities;
 	__le32 Channel;
 	__le16 SecurityBufferOffset;
 	__le16 SecurityBufferLength;
 	__le64 PreviousSessionId;
 	__u8   Buffer[1];	/* variable length GSS security buffer */
 } __packed;

 /* Currently defined SessionFlags */
 #define SMB2_SESSION_FLAG_IS_GUEST	0x0001
 #define SMB2_SESSION_FLAG_IS_NULL	0x0002
 struct smb2_sess_setup_rsp {
 	struct smb2_hdr hdr;
 	__le16 StructureSize; /* Must be 9 */
 	__le16 SessionFlags;
 	__le16 SecurityBufferOffset;
 	__le16 SecurityBufferLength;
 	__u8   Buffer[1];	/* variable length GSS security buffer */
 } __packed;

 struct smb2_logoff_req {
 	struct smb2_hdr hdr;
 	__le16 StructureSize;	/* Must be 4 */
 	__le16 Reserved;
 } __packed;

 struct smb2_logoff_rsp {
 	struct smb2_hdr hdr;
 	__le16 StructureSize;	/* Must be 4 */
 	__le16 Reserved;
 } __packed;

 struct smb2_tree_connect_req {
 	struct smb2_hdr hdr;
 	__le16 StructureSize;	/* Must be 9 */
 	__le16 Reserved;
 	__le16 PathOffset;
 	__le16 PathLength;
 	__u8   Buffer[1];	/* variable length */
 } __packed;

 struct smb2_tree_connect_rsp {
 	struct smb2_hdr hdr;
 	__le16 StructureSize;	/* Must be 16 */
 	__u8   ShareType;  /* see below */
 	__u8   Reserved;
 	__le32 ShareFlags; /* see below */
 	__le32 Capabilities; /* see below */
 	__le32 MaximalAccess;
 } __packed;

 /* Possible ShareType values */
 #define SMB2_SHARE_TYPE_DISK	0x01
 #define SMB2_SHARE_TYPE_PIPE	0x02
 #define	SMB2_SHARE_TYPE_PRINT	0x03

 /*
  * Possible ShareFlags - exactly one and only one of the first 4 caching flags
  * must be set (any of the remaining, SHI1005, flags may be set individually
  * or in combination.
  */
 #define SMB2_SHAREFLAG_MANUAL_CACHING			0x00000000
 #define SMB2_SHAREFLAG_AUTO_CACHING			0x00000010
 #define SMB2_SHAREFLAG_VDO_CACHING			0x00000020
 #define SMB2_SHAREFLAG_NO_CACHING			0x00000030
 #define SHI1005_FLAGS_DFS				0x00000001
 #define SHI1005_FLAGS_DFS_ROOT				0x00000002
 #define SHI1005_FLAGS_RESTRICT_EXCLUSIVE_OPENS		0x00000100
 #define SHI1005_FLAGS_FORCE_SHARED_DELETE		0x00000200
 #define SHI1005_FLAGS_ALLOW_NAMESPACE_CACHING		0x00000400
 #define SHI1005_FLAGS_ACCESS_BASED_DIRECTORY_ENUM	0x00000800
 #define SHI1005_FLAGS_FORCE_LEVELII_OPLOCK		0x00001000
 #define SHI1005_FLAGS_ENABLE_HASH			0x00002000

 /* Possible share capabilities */
 #define SMB2_SHARE_CAP_DFS	cpu_to_le32(0x00000008)

 struct smb2_tree_disconnect_req {
 	struct smb2_hdr hdr;
 	__le16 StructureSize;	/* Must be 4 */
 	__le16 Reserved;
 } __packed;

 struct smb2_tree_disconnect_rsp {
 	struct smb2_hdr hdr;
 	__le16 StructureSize;	/* Must be 4 */
 	__le16 Reserved;
 } __packed;

 /* File Attrubutes */
 #define FILE_ATTRIBUTE_READONLY			0x00000001
 #define FILE_ATTRIBUTE_HIDDEN			0x00000002
 #define FILE_ATTRIBUTE_SYSTEM			0x00000004
 #define FILE_ATTRIBUTE_DIRECTORY		0x00000010
 #define FILE_ATTRIBUTE_ARCHIVE			0x00000020
 #define FILE_ATTRIBUTE_NORMAL			0x00000080
 #define FILE_ATTRIBUTE_TEMPORARY		0x00000100
 #define FILE_ATTRIBUTE_SPARSE_FILE		0x00000200
 #define FILE_ATTRIBUTE_REPARSE_POINT		0x00000400
 #define FILE_ATTRIBUTE_COMPRESSED		0x00000800
 #define FILE_ATTRIBUTE_OFFLINE			0x00001000
 #define FILE_ATTRIBUTE_NOT_CONTENT_INDEXED	0x00002000
 #define FILE_ATTRIBUTE_ENCRYPTED		0x00004000

 /* Oplock levels */
 #define SMB2_OPLOCK_LEVEL_NONE		0x00
 #define SMB2_OPLOCK_LEVEL_II		0x01
 #define SMB2_OPLOCK_LEVEL_EXCLUSIVE	0x08
 #define SMB2_OPLOCK_LEVEL_BATCH		0x09
 #define SMB2_OPLOCK_LEVEL_LEASE		0xFF

 /* Desired Access Flags */
 #define FILE_READ_DATA_LE		cpu_to_le32(0x00000001)
 #define FILE_WRITE_DATA_LE		cpu_to_le32(0x00000002)
 #define FILE_APPEND_DATA_LE		cpu_to_le32(0x00000004)
 #define FILE_READ_EA_LE			cpu_to_le32(0x00000008)
 #define FILE_WRITE_EA_LE		cpu_to_le32(0x00000010)
 #define FILE_EXECUTE_LE			cpu_to_le32(0x00000020)
 #define FILE_READ_ATTRIBUTES_LE		cpu_to_le32(0x00000080)
 #define FILE_WRITE_ATTRIBUTES_LE	cpu_to_le32(0x00000100)
 #define FILE_DELETE_LE			cpu_to_le32(0x00010000)
 #define FILE_READ_CONTROL_LE		cpu_to_le32(0x00020000)
 #define FILE_WRITE_DAC_LE		cpu_to_le32(0x00040000)
 #define FILE_WRITE_OWNER_LE		cpu_to_le32(0x00080000)
 #define FILE_SYNCHRONIZE_LE		cpu_to_le32(0x00100000)
 #define FILE_ACCESS_SYSTEM_SECURITY_LE	cpu_to_le32(0x01000000)
 #define FILE_MAXIMAL_ACCESS_LE		cpu_to_le32(0x02000000)
 #define FILE_GENERIC_ALL_LE		cpu_to_le32(0x10000000)
 #define FILE_GENERIC_EXECUTE_LE		cpu_to_le32(0x20000000)
 #define FILE_GENERIC_WRITE_LE		cpu_to_le32(0x40000000)
 #define FILE_GENERIC_READ_LE		cpu_to_le32(0x80000000)

 /* ShareAccess Flags */
 #define FILE_SHARE_READ_LE		cpu_to_le32(0x00000001)
 #define FILE_SHARE_WRITE_LE		cpu_to_le32(0x00000002)
 #define FILE_SHARE_DELETE_LE		cpu_to_le32(0x00000004)
 #define FILE_SHARE_ALL_LE		cpu_to_le32(0x00000007)

 /* CreateDisposition Flags */
 #define FILE_SUPERSEDE_LE		cpu_to_le32(0x00000000)
 #define FILE_OPEN_LE			cpu_to_le32(0x00000001)
 #define FILE_CREATE_LE			cpu_to_le32(0x00000002)
 #define	FILE_OPEN_IF_LE			cpu_to_le32(0x00000003)
 #define FILE_OVERWRITE_LE		cpu_to_le32(0x00000004)
 #define FILE_OVERWRITE_IF_LE		cpu_to_le32(0x00000005)

 /* CreateOptions Flags */
 #define FILE_DIRECTORY_FILE_LE		cpu_to_le32(0x00000001)
 /* same as #define CREATE_NOT_FILE_LE	cpu_to_le32(0x00000001) */
 #define FILE_WRITE_THROUGH_LE		cpu_to_le32(0x00000002)
 #define FILE_SEQUENTIAL_ONLY_LE		cpu_to_le32(0x00000004)
 #define FILE_NO_INTERMEDIATE_BUFFERRING_LE cpu_to_le32(0x00000008)
 #define FILE_SYNCHRONOUS_IO_ALERT_LE	cpu_to_le32(0x00000010)
 #define FILE_SYNCHRONOUS_IO_NON_ALERT_LE	cpu_to_le32(0x00000020)
 #define FILE_NON_DIRECTORY_FILE_LE	cpu_to_le32(0x00000040)
 #define FILE_COMPLETE_IF_OPLOCKED_LE	cpu_to_le32(0x00000100)
 #define FILE_NO_EA_KNOWLEDGE_LE		cpu_to_le32(0x00000200)
 #define FILE_RANDOM_ACCESS_LE		cpu_to_le32(0x00000800)
 #define FILE_DELETE_ON_CLOSE_LE		cpu_to_le32(0x00001000)
 #define FILE_OPEN_BY_FILE_ID_LE		cpu_to_le32(0x00002000)
 #define FILE_OPEN_FOR_BACKUP_INTENT_LE	cpu_to_le32(0x00004000)
 #define FILE_NO_COMPRESSION_LE		cpu_to_le32(0x00008000)
 #define FILE_RESERVE_OPFILTER_LE	cpu_to_le32(0x00100000)
 #define FILE_OPEN_REPARSE_POINT_LE	cpu_to_le32(0x00200000)
 #define FILE_OPEN_NO_RECALL_LE		cpu_to_le32(0x00400000)
 #define FILE_OPEN_FOR_FREE_SPACE_QUERY_LE cpu_to_le32(0x00800000)

 #define FILE_READ_RIGHTS_LE (FILE_READ_DATA_LE | FILE_READ_EA_LE \
 			| FILE_READ_ATTRIBUTES_LE)
 #define FILE_WRITE_RIGHTS_LE (FILE_WRITE_DATA_LE | FILE_APPEND_DATA_LE \
 			| FILE_WRITE_EA_LE | FILE_WRITE_ATTRIBUTES_LE)
 #define FILE_EXEC_RIGHTS_LE (FILE_EXECUTE_LE)

 /* Impersonation Levels */
 #define IL_ANONYMOUS		cpu_to_le32(0x00000000)
 #define IL_IDENTIFICATION	cpu_to_le32(0x00000001)
 #define IL_IMPERSONATION	cpu_to_le32(0x00000002)
 #define IL_DELEGATE		cpu_to_le32(0x00000003)

 /* Create Context Values */
 #define SMB2_CREATE_EA_BUFFER			"ExtA" /* extended attributes */
 #define SMB2_CREATE_SD_BUFFER			"SecD" /* security descriptor */
 #define SMB2_CREATE_DURABLE_HANDLE_REQUEST	"DHnQ"
 #define SMB2_CREATE_DURABLE_HANDLE_RECONNECT	"DHnC"
 #define SMB2_CREATE_ALLOCATION_SIZE		"AlSi"
 #define SMB2_CREATE_QUERY_MAXIMAL_ACCESS_REQUEST "MxAc"
 #define SMB2_CREATE_TIMEWARP_REQUEST		"TWrp"
 #define SMB2_CREATE_QUERY_ON_DISK_ID		"QFid"
 #define SMB2_CREATE_REQUEST_LEASE		"RqLs"

 struct smb2_create_req {
 	struct smb2_hdr hdr;
 	__le16 StructureSize;	/* Must be 57 */
 	__u8   SecurityFlags;
 	__u8   RequestedOplockLevel;
 	__le32 ImpersonationLevel;
 	__le64 SmbCreateFlags;
 	__le64 Reserved;
 	__le32 DesiredAccess;
 	__le32 FileAttributes;
 	__le32 ShareAccess;
 	__le32 CreateDisposition;
 	__le32 CreateOptions;
 	__le16 NameOffset;
 	__le16 NameLength;
 	__le32 CreateContextsOffset;
 	__le32 CreateContextsLength;
 	__u8   Buffer[1];
 } __packed;

 struct smb2_create_rsp {
 	struct smb2_hdr hdr;
 	__le16 StructureSize;	/* Must be 89 */
 	__u8   OplockLevel;
 	__u8   Reserved;
 	__le32 CreateAction;
 	__le64 CreationTime;
 	__le64 LastAccessTime;
 	__le64 LastWriteTime;
 	__le64 ChangeTime;
 	__le64 AllocationSize;
 	__le64 EndofFile;
 	__le32 FileAttributes;
 	__le32 Reserved2;
 	__u64  PersistentFileId; /* opaque endianness */
 	__u64  VolatileFileId; /* opaque endianness */
 	__le32 CreateContextsOffset;
 	__le32 CreateContextsLength;
 	__u8   Buffer[1];
 } __packed;

 /* Currently defined values for close flags */
 #define SMB2_CLOSE_FLAG_POSTQUERY_ATTRIB	cpu_to_le16(0x0001)
 struct smb2_close_req {
 	struct smb2_hdr hdr;
 	__le16 StructureSize;	/* Must be 24 */
 	__le16 Flags;
 	__le32 Reserved;
 	__u64  PersistentFileId; /* opaque endianness */
 	__u64  VolatileFileId; /* opaque endianness */
 } __packed;

 struct smb2_close_rsp {
 	struct smb2_hdr hdr;
 	__le16 StructureSize; /* 60 */
 	__le16 Flags;
 	__le32 Reserved;
 	__le64 CreationTime;
 	__le64 LastAccessTime;
 	__le64 LastWriteTime;
 	__le64 ChangeTime;
 	__le64 AllocationSize;	/* Beginning of FILE_STANDARD_INFO equivalent */
 	__le64 EndOfFile;
 	__le32 Attributes;
 } __packed;

 struct smb2_echo_req {
 	struct smb2_hdr hdr;
 	__le16 StructureSize;	/* Must be 4 */
 	__u16  Reserved;
 } __packed;

 struct smb2_echo_rsp {
 	struct smb2_hdr hdr;
 	__le16 StructureSize;	/* Must be 4 */
 	__u16  Reserved;
 } __packed;

 /* Possible InfoType values */
 #define SMB2_O_INFO_FILE	0x01
 #define SMB2_O_INFO_FILESYSTEM	0x02
 #define SMB2_O_INFO_SECURITY	0x03
 #define SMB2_O_INFO_QUOTA	0x04

 struct smb2_query_info_req {
 	struct smb2_hdr hdr;
 	__le16 StructureSize; /* Must be 41 */
 	__u8   InfoType;
 	__u8   FileInfoClass;
 	__le32 OutputBufferLength;
 	__le16 InputBufferOffset;
 	__u16  Reserved;
 	__le32 InputBufferLength;
 	__le32 AdditionalInformation;
 	__le32 Flags;
 	__u64  PersistentFileId; /* opaque endianness */
 	__u64  VolatileFileId; /* opaque endianness */
 	__u8   Buffer[1];
 } __packed;

 struct smb2_query_info_rsp {
 	struct smb2_hdr hdr;
 	__le16 StructureSize; /* Must be 9 */
 	__le16 OutputBufferOffset;
 	__le32 OutputBufferLength;
 	__u8   Buffer[1];
 } __packed;

 /*
  *	PDU infolevel structure definitions
  *	BB consider moving to a different header
  */

 /* partial list of QUERY INFO levels */
 #define FILE_DIRECTORY_INFORMATION	1
 #define FILE_FULL_DIRECTORY_INFORMATION 2
 #define FILE_BOTH_DIRECTORY_INFORMATION 3
 #define FILE_BASIC_INFORMATION		4
 #define FILE_STANDARD_INFORMATION	5
 #define FILE_INTERNAL_INFORMATION	6
 #define FILE_EA_INFORMATION	        7
 #define FILE_ACCESS_INFORMATION		8
 #define FILE_NAME_INFORMATION		9
 #define FILE_RENAME_INFORMATION		10
 #define FILE_LINK_INFORMATION		11
 #define FILE_NAMES_INFORMATION		12
 #define FILE_DISPOSITION_INFORMATION	13
 #define FILE_POSITION_INFORMATION	14
 #define FILE_FULL_EA_INFORMATION	15
 #define FILE_MODE_INFORMATION		16
 #define FILE_ALIGNMENT_INFORMATION	17
 #define FILE_ALL_INFORMATION		18
 #define FILE_ALLOCATION_INFORMATION	19
 #define FILE_END_OF_FILE_INFORMATION	20
 #define FILE_ALTERNATE_NAME_INFORMATION 21
 #define FILE_STREAM_INFORMATION		22
 #define FILE_PIPE_INFORMATION		23
 #define FILE_PIPE_LOCAL_INFORMATION	24
 #define FILE_PIPE_REMOTE_INFORMATION	25
 #define FILE_MAILSLOT_QUERY_INFORMATION 26
 #define FILE_MAILSLOT_SET_INFORMATION	27
 #define FILE_COMPRESSION_INFORMATION	28
 #define FILE_OBJECT_ID_INFORMATION	29
 /* Number 30 not defined in documents */
 #define FILE_MOVE_CLUSTER_INFORMATION	31
 #define FILE_QUOTA_INFORMATION		32
 #define FILE_REPARSE_POINT_INFORMATION	33
 #define FILE_NETWORK_OPEN_INFORMATION	34
 #define FILE_ATTRIBUTE_TAG_INFORMATION	35
 #define FILE_TRACKING_INFORMATION	36
 #define FILEID_BOTH_DIRECTORY_INFORMATION 37
 #define FILEID_FULL_DIRECTORY_INFORMATION 38
 #define FILE_VALID_DATA_LENGTH_INFORMATION 39
 #define FILE_SHORT_NAME_INFORMATION	40
 #define FILE_SFIO_RESERVE_INFORMATION	44
 #define FILE_SFIO_VOLUME_INFORMATION	45
 #define FILE_HARD_LINK_INFORMATION	46
 #define FILE_NORMALIZED_NAME_INFORMATION 48
 #define FILEID_GLOBAL_TX_DIRECTORY_INFORMATION 50
 #define FILE_STANDARD_LINK_INFORMATION	54

 /*
  * This level 18, although with struct with same name is different from cifs
  * level 0x107. Level 0x107 has an extra u64 between AccessFlags and
  * CurrentByteOffset.
  */
 struct smb2_file_all_info { /* data block encoding of response to level 18 */
 	__le64 CreationTime;	/* Beginning of FILE_BASIC_INFO equivalent */
 	__le64 LastAccessTime;
 	__le64 LastWriteTime;
 	__le64 ChangeTime;
 	__le32 Attributes;
 	__u32  Pad1;		/* End of FILE_BASIC_INFO_INFO equivalent */
 	__le64 AllocationSize;	/* Beginning of FILE_STANDARD_INFO equivalent */
 	__le64 EndOfFile;	/* size ie offset to first free byte in file */
 	__le32 NumberOfLinks;	/* hard links */
 	__u8   DeletePending;
 	__u8   Directory;
 	__u16  Pad2;		/* End of FILE_STANDARD_INFO equivalent */
 	__le64 IndexNumber;
 	__le32 EASize;
 	__le32 AccessFlags;
 	__le64 CurrentByteOffset;
 	__le32 Mode;
 	__le32 AlignmentRequirement;
 	__le32 FileNameLength;
 	char   FileName[1];
 } __packed; /* level 18 Query */

 #endif				/* _SMB2PDU_H */
	/*
	* fs/cifs/smb2pdu.h
	*
	* Copyright (c) International Business Machines Corp., 2009, 2010
	* Etersoft, 2012
	* Author(s): Steve French (sfrench@us.ibm.com)
	* Pavel Shilovsky (pshilovsky@samba.org) 2012
	*
	* This library is free software; you can redistribute it and/or modify
	* it under the terms of the GNU Lesser General Public License as published
	* by the Free Software Foundation; either version 2.1 of the License, or
	* (at your option) any later version.
	*
	* This library is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
	* the GNU Lesser General Public License for more details.
	*
	* You should have received a copy of the GNU Lesser General Public License
	* along with this library; if not, write to the Free Software
	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	*/

	#ifndef _SMB2PDU_H
	#define _SMB2PDU_H

	#include <net/sock.h>

	/*
	* Note that, due to trying to use names similar to the protocol specifications,
	* there are many mixed case field names in the structures below. Although
	* this does not match typical Linux kernel style, it is necessary to be
	* be able to match against the protocol specfication.
	*
	* SMB2 commands
	* Some commands have minimal (wct=0,bcc=0), or uninteresting, responses
	* (ie no useful data other than the SMB error code itself) and are marked such.
	* Knowing this helps avoid response buffer allocations and copy in some cases.
	*/

	/* List of commands in host endian */
	#define SMB2_NEGOTIATE_HE 0x0000
	#define SMB2_SESSION_SETUP_HE 0x0001
	#define SMB2_LOGOFF_HE 0x0002 /* trivial request/resp */
	#define SMB2_TREE_CONNECT_HE 0x0003
	#define SMB2_TREE_DISCONNECT_HE 0x0004 /* trivial req/resp */
	#define SMB2_CREATE_HE 0x0005
	#define SMB2_CLOSE_HE 0x0006
	#define SMB2_FLUSH_HE 0x0007 /* trivial resp */
	#define SMB2_READ_HE 0x0008
	#define SMB2_WRITE_HE 0x0009
	#define SMB2_LOCK_HE 0x000A
	#define SMB2_IOCTL_HE 0x000B
	#define SMB2_CANCEL_HE 0x000C
	#define SMB2_ECHO_HE 0x000D
	#define SMB2_QUERY_DIRECTORY_HE 0x000E
	#define SMB2_CHANGE_NOTIFY_HE 0x000F
	#define SMB2_QUERY_INFO_HE 0x0010
	#define SMB2_SET_INFO_HE 0x0011
	#define SMB2_OPLOCK_BREAK_HE 0x0012

	/* The same list in little endian */
	#define SMB2_NEGOTIATE cpu_to_le16(SMB2_NEGOTIATE_HE)
	#define SMB2_SESSION_SETUP cpu_to_le16(SMB2_SESSION_SETUP_HE)
	#define SMB2_LOGOFF cpu_to_le16(SMB2_LOGOFF_HE)
	#define SMB2_TREE_CONNECT cpu_to_le16(SMB2_TREE_CONNECT_HE)
	#define SMB2_TREE_DISCONNECT cpu_to_le16(SMB2_TREE_DISCONNECT_HE)
	#define SMB2_CREATE cpu_to_le16(SMB2_CREATE_HE)
	#define SMB2_CLOSE cpu_to_le16(SMB2_CLOSE_HE)
	#define SMB2_FLUSH cpu_to_le16(SMB2_FLUSH_HE)
	#define SMB2_READ cpu_to_le16(SMB2_READ_HE)
	#define SMB2_WRITE cpu_to_le16(SMB2_WRITE_HE)
	#define SMB2_LOCK cpu_to_le16(SMB2_LOCK_HE)
	#define SMB2_IOCTL cpu_to_le16(SMB2_IOCTL_HE)
	#define SMB2_CANCEL cpu_to_le16(SMB2_CANCEL_HE)
	#define SMB2_ECHO cpu_to_le16(SMB2_ECHO_HE)
	#define SMB2_QUERY_DIRECTORY cpu_to_le16(SMB2_QUERY_DIRECTORY_HE)
	#define SMB2_CHANGE_NOTIFY cpu_to_le16(SMB2_CHANGE_NOTIFY_HE)
	#define SMB2_QUERY_INFO cpu_to_le16(SMB2_QUERY_INFO_HE)
	#define SMB2_SET_INFO cpu_to_le16(SMB2_SET_INFO_HE)
	#define SMB2_OPLOCK_BREAK cpu_to_le16(SMB2_OPLOCK_BREAK_HE)

	#define NUMBER_OF_SMB2_COMMANDS 0x0013

	/* BB FIXME - analyze following length BB */
	#define MAX_SMB2_HDR_SIZE 0x78 /* 4 len + 64 hdr + (224 wct) + 2 bct + 2 pad /

	#define SMB2_PROTO_NUMBER __constant_cpu_to_le32(0x424d53fe)

	/*
	* SMB2 Header Definition
	*
	* "MBZ" : Must be Zero
	* "BB" : BugBug, Something to check/review/analyze later
	* "PDU" : "Protocol Data Unit" (ie a network "frame")
	*
	*/

	#define SMB2_HEADER_STRUCTURE_SIZE __constant_le16_to_cpu(64)

	struct smb2_hdr {
	__be32 smb2_buf_length; /* big endian on wire */
	/* length is only two or three bytes - with
	one or two byte type preceding it that MBZ */
	__u8 ProtocolId[4]; /* 0xFE 'S' 'M' 'B' */
	__le16 StructureSize; /* 64 */
	__le16 CreditCharge; /* MBZ */
	__le32 Status; /* Error from server */
	__le16 Command;
	__le16 CreditRequest; /* CreditResponse */
	__le32 Flags;
	__le32 NextCommand;
	__u64 MessageId; /* opaque - so can stay little endian */
	__le32 ProcessId;
	__u32 TreeId; /* opaque - so do not make little endian */
	__u64 SessionId; /* opaque - so do not make little endian */
	__u8 Signature[16];
	} __packed;

	struct smb2_pdu {
	struct smb2_hdr hdr;
	__le16 StructureSize2; /* size of wct area (varies, request specific) */
	} __packed;

	/*
	* SMB2 flag definitions
	*/
	#define SMB2_FLAGS_SERVER_TO_REDIR __constant_cpu_to_le32(0x00000001)
	#define SMB2_FLAGS_ASYNC_COMMAND __constant_cpu_to_le32(0x00000002)
	#define SMB2_FLAGS_RELATED_OPERATIONS __constant_cpu_to_le32(0x00000004)
	#define SMB2_FLAGS_SIGNED __constant_cpu_to_le32(0x00000008)
	#define SMB2_FLAGS_DFS_OPERATIONS __constant_cpu_to_le32(0x10000000)

	/*
	* Definitions for SMB2 Protocol Data Units (network frames)
	*
	* See MS-SMB2.PDF specification for protocol details.
	* The Naming convention is the lower case version of the SMB2
	* command code name for the struct. Note that structures must be packed.
	*
	*/

	#define SMB2_ERROR_STRUCTURE_SIZE2 __constant_le16_to_cpu(9)

	struct smb2_err_rsp {
	struct smb2_hdr hdr;
	__le16 StructureSize;
	__le16 Reserved; /* MBZ */
	__le32 ByteCount; /* even if zero, at least one byte follows */
	__u8 ErrorData[1]; /* variable length */
	} __packed;

	struct smb2_negotiate_req {
	struct smb2_hdr hdr;
	__le16 StructureSize; /* Must be 36 */
	__le16 DialectCount;
	__le16 SecurityMode;
	__le16 Reserved; /* MBZ */
	__le32 Capabilities;
	__u8 ClientGUID[16]; /* MBZ */
	__le64 ClientStartTime; /* MBZ */
	__le16 Dialects[2]; /* variable length */
	} __packed;

	/* SecurityMode flags */
	#define SMB2_NEGOTIATE_SIGNING_ENABLED 0x0001
	#define SMB2_NEGOTIATE_SIGNING_REQUIRED 0x0002
	/* Capabilities flags */
	#define SMB2_GLOBAL_CAP_DFS 0x00000001
	#define SMB2_GLOBAL_CAP_LEASING 0x00000002 /* Resp only New to SMB2.1 */
	#define SMB2_GLOBAL_CAP_LARGE_MTU 0X00000004 /* Resp only New to SMB2.1 */
	/* Internal types */
	#define SMB2_NT_FIND 0x00100000
	#define SMB2_LARGE_FILES 0x00200000

	struct smb2_negotiate_rsp {
	struct smb2_hdr hdr;
	__le16 StructureSize; /* Must be 65 */
	__le16 SecurityMode;
	__le16 DialectRevision;
	__le16 Reserved; /* MBZ */
	__u8 ServerGUID[16];
	__le32 Capabilities;
	__le32 MaxTransactSize;
	__le32 MaxReadSize;
	__le32 MaxWriteSize;
	__le64 SystemTime; /* MBZ */
	__le64 ServerStartTime;
	__le16 SecurityBufferOffset;
	__le16 SecurityBufferLength;
	__le32 Reserved2; /* may be any value, ignore */
	__u8 Buffer[1]; /* variable length GSS security buffer */
	} __packed;

	struct smb2_sess_setup_req {
	struct smb2_hdr hdr;
	__le16 StructureSize; /* Must be 25 */
	__u8 VcNumber;
	__u8 SecurityMode;
	__le32 Capabilities;
	__le32 Channel;
	__le16 SecurityBufferOffset;
	__le16 SecurityBufferLength;
	__le64 PreviousSessionId;
	__u8 Buffer[1]; /* variable length GSS security buffer */
	} __packed;

	/* Currently defined SessionFlags */
	#define SMB2_SESSION_FLAG_IS_GUEST 0x0001
	#define SMB2_SESSION_FLAG_IS_NULL 0x0002
	struct smb2_sess_setup_rsp {
	struct smb2_hdr hdr;
	__le16 StructureSize; /* Must be 9 */
	__le16 SessionFlags;
	__le16 SecurityBufferOffset;
	__le16 SecurityBufferLength;
	__u8 Buffer[1]; /* variable length GSS security buffer */
	} __packed;

	struct smb2_logoff_req {
	struct smb2_hdr hdr;
	__le16 StructureSize; /* Must be 4 */
	__le16 Reserved;
	} __packed;

	struct smb2_logoff_rsp {
	struct smb2_hdr hdr;
	__le16 StructureSize; /* Must be 4 */
	__le16 Reserved;
	} __packed;

	struct smb2_tree_connect_req {
	struct smb2_hdr hdr;
	__le16 StructureSize; /* Must be 9 */
	__le16 Reserved;
	__le16 PathOffset;
	__le16 PathLength;
	__u8 Buffer[1]; /* variable length */
	} __packed;

	struct smb2_tree_connect_rsp {
	struct smb2_hdr hdr;
	__le16 StructureSize; /* Must be 16 */
	__u8 ShareType; /* see below */
	__u8 Reserved;
	__le32 ShareFlags; /* see below */
	__le32 Capabilities; /* see below */
	__le32 MaximalAccess;
	} __packed;

	/* Possible ShareType values */
	#define SMB2_SHARE_TYPE_DISK 0x01
	#define SMB2_SHARE_TYPE_PIPE 0x02
	#define SMB2_SHARE_TYPE_PRINT 0x03

	/*
	* Possible ShareFlags - exactly one and only one of the first 4 caching flags
	* must be set (any of the remaining, SHI1005, flags may be set individually
	* or in combination.
	*/
	#define SMB2_SHAREFLAG_MANUAL_CACHING 0x00000000
	#define SMB2_SHAREFLAG_AUTO_CACHING 0x00000010
	#define SMB2_SHAREFLAG_VDO_CACHING 0x00000020
	#define SMB2_SHAREFLAG_NO_CACHING 0x00000030
	#define SHI1005_FLAGS_DFS 0x00000001
	#define SHI1005_FLAGS_DFS_ROOT 0x00000002
	#define SHI1005_FLAGS_RESTRICT_EXCLUSIVE_OPENS 0x00000100
	#define SHI1005_FLAGS_FORCE_SHARED_DELETE 0x00000200
	#define SHI1005_FLAGS_ALLOW_NAMESPACE_CACHING 0x00000400
	#define SHI1005_FLAGS_ACCESS_BASED_DIRECTORY_ENUM 0x00000800
	#define SHI1005_FLAGS_FORCE_LEVELII_OPLOCK 0x00001000
	#define SHI1005_FLAGS_ENABLE_HASH 0x00002000

	/* Possible share capabilities */
	#define SMB2_SHARE_CAP_DFS cpu_to_le32(0x00000008)

	struct smb2_tree_disconnect_req {
	struct smb2_hdr hdr;
	__le16 StructureSize; /* Must be 4 */
	__le16 Reserved;
	} __packed;

	struct smb2_tree_disconnect_rsp {
	struct smb2_hdr hdr;
	__le16 StructureSize; /* Must be 4 */
	__le16 Reserved;
	} __packed;

	/* File Attrubutes */
	#define FILE_ATTRIBUTE_READONLY 0x00000001
	#define FILE_ATTRIBUTE_HIDDEN 0x00000002
	#define FILE_ATTRIBUTE_SYSTEM 0x00000004
	#define FILE_ATTRIBUTE_DIRECTORY 0x00000010
	#define FILE_ATTRIBUTE_ARCHIVE 0x00000020
	#define FILE_ATTRIBUTE_NORMAL 0x00000080
	#define FILE_ATTRIBUTE_TEMPORARY 0x00000100
	#define FILE_ATTRIBUTE_SPARSE_FILE 0x00000200
	#define FILE_ATTRIBUTE_REPARSE_POINT 0x00000400
	#define FILE_ATTRIBUTE_COMPRESSED 0x00000800
	#define FILE_ATTRIBUTE_OFFLINE 0x00001000
	#define FILE_ATTRIBUTE_NOT_CONTENT_INDEXED 0x00002000
	#define FILE_ATTRIBUTE_ENCRYPTED 0x00004000

	/* Oplock levels */
	#define SMB2_OPLOCK_LEVEL_NONE 0x00
	#define SMB2_OPLOCK_LEVEL_II 0x01
	#define SMB2_OPLOCK_LEVEL_EXCLUSIVE 0x08
	#define SMB2_OPLOCK_LEVEL_BATCH 0x09
	#define SMB2_OPLOCK_LEVEL_LEASE 0xFF

	/* Desired Access Flags */
	#define FILE_READ_DATA_LE cpu_to_le32(0x00000001)
	#define FILE_WRITE_DATA_LE cpu_to_le32(0x00000002)
	#define FILE_APPEND_DATA_LE cpu_to_le32(0x00000004)
	#define FILE_READ_EA_LE cpu_to_le32(0x00000008)
	#define FILE_WRITE_EA_LE cpu_to_le32(0x00000010)
	#define FILE_EXECUTE_LE cpu_to_le32(0x00000020)
	#define FILE_READ_ATTRIBUTES_LE cpu_to_le32(0x00000080)
	#define FILE_WRITE_ATTRIBUTES_LE cpu_to_le32(0x00000100)
	#define FILE_DELETE_LE cpu_to_le32(0x00010000)
	#define FILE_READ_CONTROL_LE cpu_to_le32(0x00020000)
	#define FILE_WRITE_DAC_LE cpu_to_le32(0x00040000)
	#define FILE_WRITE_OWNER_LE cpu_to_le32(0x00080000)
	#define FILE_SYNCHRONIZE_LE cpu_to_le32(0x00100000)
	#define FILE_ACCESS_SYSTEM_SECURITY_LE cpu_to_le32(0x01000000)
	#define FILE_MAXIMAL_ACCESS_LE cpu_to_le32(0x02000000)
	#define FILE_GENERIC_ALL_LE cpu_to_le32(0x10000000)
	#define FILE_GENERIC_EXECUTE_LE cpu_to_le32(0x20000000)
	#define FILE_GENERIC_WRITE_LE cpu_to_le32(0x40000000)
	#define FILE_GENERIC_READ_LE cpu_to_le32(0x80000000)

	/* ShareAccess Flags */
	#define FILE_SHARE_READ_LE cpu_to_le32(0x00000001)
	#define FILE_SHARE_WRITE_LE cpu_to_le32(0x00000002)
	#define FILE_SHARE_DELETE_LE cpu_to_le32(0x00000004)
	#define FILE_SHARE_ALL_LE cpu_to_le32(0x00000007)

	/* CreateDisposition Flags */
	#define FILE_SUPERSEDE_LE cpu_to_le32(0x00000000)
	#define FILE_OPEN_LE cpu_to_le32(0x00000001)
	#define FILE_CREATE_LE cpu_to_le32(0x00000002)
	#define FILE_OPEN_IF_LE cpu_to_le32(0x00000003)
	#define FILE_OVERWRITE_LE cpu_to_le32(0x00000004)
	#define FILE_OVERWRITE_IF_LE cpu_to_le32(0x00000005)

	/* CreateOptions Flags */
	#define FILE_DIRECTORY_FILE_LE cpu_to_le32(0x00000001)
	/* same as #define CREATE_NOT_FILE_LE cpu_to_le32(0x00000001) */
	#define FILE_WRITE_THROUGH_LE cpu_to_le32(0x00000002)
	#define FILE_SEQUENTIAL_ONLY_LE cpu_to_le32(0x00000004)
	#define FILE_NO_INTERMEDIATE_BUFFERRING_LE cpu_to_le32(0x00000008)
	#define FILE_SYNCHRONOUS_IO_ALERT_LE cpu_to_le32(0x00000010)
	#define FILE_SYNCHRONOUS_IO_NON_ALERT_LE cpu_to_le32(0x00000020)
	#define FILE_NON_DIRECTORY_FILE_LE cpu_to_le32(0x00000040)
	#define FILE_COMPLETE_IF_OPLOCKED_LE cpu_to_le32(0x00000100)
	#define FILE_NO_EA_KNOWLEDGE_LE cpu_to_le32(0x00000200)
	#define FILE_RANDOM_ACCESS_LE cpu_to_le32(0x00000800)
	#define FILE_DELETE_ON_CLOSE_LE cpu_to_le32(0x00001000)
	#define FILE_OPEN_BY_FILE_ID_LE cpu_to_le32(0x00002000)
	#define FILE_OPEN_FOR_BACKUP_INTENT_LE cpu_to_le32(0x00004000)
	#define FILE_NO_COMPRESSION_LE cpu_to_le32(0x00008000)
	#define FILE_RESERVE_OPFILTER_LE cpu_to_le32(0x00100000)
	#define FILE_OPEN_REPARSE_POINT_LE cpu_to_le32(0x00200000)
	#define FILE_OPEN_NO_RECALL_LE cpu_to_le32(0x00400000)
	#define FILE_OPEN_FOR_FREE_SPACE_QUERY_LE cpu_to_le32(0x00800000)

	#define FILE_READ_RIGHTS_LE (FILE_READ_DATA_LE \| FILE_READ_EA_LE \
	\| FILE_READ_ATTRIBUTES_LE)
	#define FILE_WRITE_RIGHTS_LE (FILE_WRITE_DATA_LE \| FILE_APPEND_DATA_LE \
	\| FILE_WRITE_EA_LE \| FILE_WRITE_ATTRIBUTES_LE)
	#define FILE_EXEC_RIGHTS_LE (FILE_EXECUTE_LE)

	/* Impersonation Levels */
	#define IL_ANONYMOUS cpu_to_le32(0x00000000)
	#define IL_IDENTIFICATION cpu_to_le32(0x00000001)
	#define IL_IMPERSONATION cpu_to_le32(0x00000002)
	#define IL_DELEGATE cpu_to_le32(0x00000003)

	/* Create Context Values */
	#define SMB2_CREATE_EA_BUFFER "ExtA" /* extended attributes */
	#define SMB2_CREATE_SD_BUFFER "SecD" /* security descriptor */
	#define SMB2_CREATE_DURABLE_HANDLE_REQUEST "DHnQ"
	#define SMB2_CREATE_DURABLE_HANDLE_RECONNECT "DHnC"
	#define SMB2_CREATE_ALLOCATION_SIZE "AlSi"
	#define SMB2_CREATE_QUERY_MAXIMAL_ACCESS_REQUEST "MxAc"
	#define SMB2_CREATE_TIMEWARP_REQUEST "TWrp"
	#define SMB2_CREATE_QUERY_ON_DISK_ID "QFid"
	#define SMB2_CREATE_REQUEST_LEASE "RqLs"

	struct smb2_create_req {
	struct smb2_hdr hdr;
	__le16 StructureSize; /* Must be 57 */
	__u8 SecurityFlags;
	__u8 RequestedOplockLevel;
	__le32 ImpersonationLevel;
	__le64 SmbCreateFlags;
	__le64 Reserved;
	__le32 DesiredAccess;
	__le32 FileAttributes;
	__le32 ShareAccess;
	__le32 CreateDisposition;
	__le32 CreateOptions;
	__le16 NameOffset;
	__le16 NameLength;
	__le32 CreateContextsOffset;
	__le32 CreateContextsLength;
	__u8 Buffer[1];
	} __packed;

	struct smb2_create_rsp {
	struct smb2_hdr hdr;
	__le16 StructureSize; /* Must be 89 */
	__u8 OplockLevel;
	__u8 Reserved;
	__le32 CreateAction;
	__le64 CreationTime;
	__le64 LastAccessTime;
	__le64 LastWriteTime;
	__le64 ChangeTime;
	__le64 AllocationSize;
	__le64 EndofFile;
	__le32 FileAttributes;
	__le32 Reserved2;
	__u64 PersistentFileId; /* opaque endianness */
	__u64 VolatileFileId; /* opaque endianness */
	__le32 CreateContextsOffset;
	__le32 CreateContextsLength;
	__u8 Buffer[1];
	} __packed;

	/* Currently defined values for close flags */
	#define SMB2_CLOSE_FLAG_POSTQUERY_ATTRIB cpu_to_le16(0x0001)
	struct smb2_close_req {
	struct smb2_hdr hdr;
	__le16 StructureSize; /* Must be 24 */
	__le16 Flags;
	__le32 Reserved;
	__u64 PersistentFileId; /* opaque endianness */
	__u64 VolatileFileId; /* opaque endianness */
	} __packed;

	struct smb2_close_rsp {
	struct smb2_hdr hdr;
	__le16 StructureSize; /* 60 */
	__le16 Flags;
	__le32 Reserved;
	__le64 CreationTime;
	__le64 LastAccessTime;
	__le64 LastWriteTime;
	__le64 ChangeTime;
	__le64 AllocationSize; /* Beginning of FILE_STANDARD_INFO equivalent */
	__le64 EndOfFile;
	__le32 Attributes;
	} __packed;

	struct smb2_echo_req {
	struct smb2_hdr hdr;
	__le16 StructureSize; /* Must be 4 */
	__u16 Reserved;
	} __packed;

	struct smb2_echo_rsp {
	struct smb2_hdr hdr;
	__le16 StructureSize; /* Must be 4 */
	__u16 Reserved;
	} __packed;

	/* Possible InfoType values */
	#define SMB2_O_INFO_FILE 0x01
	#define SMB2_O_INFO_FILESYSTEM 0x02
	#define SMB2_O_INFO_SECURITY 0x03
	#define SMB2_O_INFO_QUOTA 0x04

	struct smb2_query_info_req {
	struct smb2_hdr hdr;
	__le16 StructureSize; /* Must be 41 */
	__u8 InfoType;
	__u8 FileInfoClass;
	__le32 OutputBufferLength;
	__le16 InputBufferOffset;
	__u16 Reserved;
	__le32 InputBufferLength;
	__le32 AdditionalInformation;
	__le32 Flags;
	__u64 PersistentFileId; /* opaque endianness */
	__u64 VolatileFileId; /* opaque endianness */
	__u8 Buffer[1];
	} __packed;

	struct smb2_query_info_rsp {
	struct smb2_hdr hdr;
	__le16 StructureSize; /* Must be 9 */
	__le16 OutputBufferOffset;
	__le32 OutputBufferLength;
	__u8 Buffer[1];
	} __packed;

	/*
	* PDU infolevel structure definitions
	* BB consider moving to a different header
	*/

	/* partial list of QUERY INFO levels */
	#define FILE_DIRECTORY_INFORMATION 1
	#define FILE_FULL_DIRECTORY_INFORMATION 2
	#define FILE_BOTH_DIRECTORY_INFORMATION 3
	#define FILE_BASIC_INFORMATION 4
	#define FILE_STANDARD_INFORMATION 5
	#define FILE_INTERNAL_INFORMATION 6
	#define FILE_EA_INFORMATION 7
	#define FILE_ACCESS_INFORMATION 8
	#define FILE_NAME_INFORMATION 9
	#define FILE_RENAME_INFORMATION 10
	#define FILE_LINK_INFORMATION 11
	#define FILE_NAMES_INFORMATION 12
	#define FILE_DISPOSITION_INFORMATION 13
	#define FILE_POSITION_INFORMATION 14
	#define FILE_FULL_EA_INFORMATION 15
	#define FILE_MODE_INFORMATION 16
	#define FILE_ALIGNMENT_INFORMATION 17
	#define FILE_ALL_INFORMATION 18
	#define FILE_ALLOCATION_INFORMATION 19
	#define FILE_END_OF_FILE_INFORMATION 20
	#define FILE_ALTERNATE_NAME_INFORMATION 21
	#define FILE_STREAM_INFORMATION 22
	#define FILE_PIPE_INFORMATION 23
	#define FILE_PIPE_LOCAL_INFORMATION 24
	#define FILE_PIPE_REMOTE_INFORMATION 25
	#define FILE_MAILSLOT_QUERY_INFORMATION 26
	#define FILE_MAILSLOT_SET_INFORMATION 27
	#define FILE_COMPRESSION_INFORMATION 28
	#define FILE_OBJECT_ID_INFORMATION 29
	/* Number 30 not defined in documents */
	#define FILE_MOVE_CLUSTER_INFORMATION 31
	#define FILE_QUOTA_INFORMATION 32
	#define FILE_REPARSE_POINT_INFORMATION 33
	#define FILE_NETWORK_OPEN_INFORMATION 34
	#define FILE_ATTRIBUTE_TAG_INFORMATION 35
	#define FILE_TRACKING_INFORMATION 36
	#define FILEID_BOTH_DIRECTORY_INFORMATION 37
	#define FILEID_FULL_DIRECTORY_INFORMATION 38
	#define FILE_VALID_DATA_LENGTH_INFORMATION 39
	#define FILE_SHORT_NAME_INFORMATION 40
	#define FILE_SFIO_RESERVE_INFORMATION 44
	#define FILE_SFIO_VOLUME_INFORMATION 45
	#define FILE_HARD_LINK_INFORMATION 46
	#define FILE_NORMALIZED_NAME_INFORMATION 48
	#define FILEID_GLOBAL_TX_DIRECTORY_INFORMATION 50
	#define FILE_STANDARD_LINK_INFORMATION 54

	/*
	* This level 18, although with struct with same name is different from cifs
	* level 0x107. Level 0x107 has an extra u64 between AccessFlags and
	* CurrentByteOffset.
	*/
	struct smb2_file_all_info { /* data block encoding of response to level 18 */
	__le64 CreationTime; /* Beginning of FILE_BASIC_INFO equivalent */
	__le64 LastAccessTime;
	__le64 LastWriteTime;
	__le64 ChangeTime;
	__le32 Attributes;
	__u32 Pad1; /* End of FILE_BASIC_INFO_INFO equivalent */
	__le64 AllocationSize; /* Beginning of FILE_STANDARD_INFO equivalent */
	__le64 EndOfFile; /* size ie offset to first free byte in file */
	__le32 NumberOfLinks; /* hard links */
	__u8 DeletePending;
	__u8 Directory;
	__u16 Pad2; /* End of FILE_STANDARD_INFO equivalent */
	__le64 IndexNumber;
	__le32 EASize;
	__le32 AccessFlags;
	__le64 CurrentByteOffset;
	__le32 Mode;
	__le32 AlignmentRequirement;
	__le32 FileNameLength;
	char FileName[1];
	} __packed; /* level 18 Query */

	#endif /* _SMB2PDU_H */