fs/smb/server/smb2pdu.h - linux - Git at Google

 /* SPDX-License-Identifier: GPL-2.0-or-later */
 /*
  *   Copyright (C) 2016 Namjae Jeon <linkinjeon@kernel.org>
  *   Copyright (C) 2018 Samsung Electronics Co., Ltd.
  */

 #ifndef _SMB2PDU_H
 #define _SMB2PDU_H

 #include "ntlmssp.h"
 #include "smbacl.h"

 /*Create Action Flags*/
 #define FILE_SUPERSEDED                0x00000000
 #define FILE_OPENED            0x00000001
 #define FILE_CREATED           0x00000002
 #define FILE_OVERWRITTEN       0x00000003

 /* SMB2 Max Credits */
 #define SMB2_MAX_CREDITS		8192

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

 #define SMB21_DEFAULT_IOSIZE	(1024 * 1024)
 #define SMB3_DEFAULT_TRANS_SIZE	(1024 * 1024)
 #define SMB3_MIN_IOSIZE		(64 * 1024)
 #define SMB3_MAX_IOSIZE		(8 * 1024 * 1024)
 #define SMB3_MAX_MSGSIZE	(4 * 4096)

 /*
  *	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.
  *
  */

 struct preauth_integrity_info {
 	/* PreAuth integrity Hash ID */
 	__le16			Preauth_HashId;
 	/* PreAuth integrity Hash Value */
 	__u8			Preauth_HashValue[SMB2_PREAUTH_HASH_SIZE];
 };

 /* offset is sizeof smb2_negotiate_rsp but rounded up to 8 bytes. */
 #ifdef CONFIG_SMB_SERVER_KERBEROS5
 /* sizeof(struct smb2_negotiate_rsp) =
  * header(64) + response(64) + GSS_LENGTH(96) + GSS_PADDING(0)
  */
 #define OFFSET_OF_NEG_CONTEXT	0xe0
 #else
 /* sizeof(struct smb2_negotiate_rsp) =
  * header(64) + response(64) + GSS_LENGTH(74) + GSS_PADDING(6)
  */
 #define OFFSET_OF_NEG_CONTEXT	0xd0
 #endif

 #define SMB2_SESSION_EXPIRED		(0)
 #define SMB2_SESSION_IN_PROGRESS	BIT(0)
 #define SMB2_SESSION_VALID		BIT(1)

 #define SMB2_SESSION_TIMEOUT		(10 * HZ)

 struct create_durable_req_v2 {
 	struct create_context ccontext;
 	__u8   Name[8];
 	__le32 Timeout;
 	__le32 Flags;
 	__u8 Reserved[8];
 	__u8 CreateGuid[16];
 } __packed;

 struct create_durable_reconn_v2_req {
 	struct create_context ccontext;
 	__u8   Name[8];
 	struct {
 		__u64 PersistentFileId;
 		__u64 VolatileFileId;
 	} Fid;
 	__u8 CreateGuid[16];
 	__le32 Flags;
 } __packed;

 struct create_alloc_size_req {
 	struct create_context ccontext;
 	__u8   Name[8];
 	__le64 AllocationSize;
 } __packed;

 struct create_durable_rsp {
 	struct create_context ccontext;
 	__u8   Name[8];
 	union {
 		__u8  Reserved[8];
 		__u64 data;
 	} Data;
 } __packed;

 struct create_durable_v2_rsp {
 	struct create_context ccontext;
 	__u8   Name[8];
 	__le32 Timeout;
 	__le32 Flags;
 } __packed;

 /* equivalent of the contents of SMB3.1.1 POSIX open context response */
 struct create_posix_rsp {
 	struct create_context ccontext;
 	__u8    Name[16];
 	__le32 nlink;
 	__le32 reparse_tag;
 	__le32 mode;
 	/* SidBuffer contain two sids(Domain sid(28), UNIX group sid(16)) */
 	u8 SidBuffer[44];
 } __packed;

 struct smb2_buffer_desc_v1 {
 	__le64 offset;
 	__le32 token;
 	__le32 length;
 } __packed;

 #define SMB2_0_IOCTL_IS_FSCTL 0x00000001

 struct smb_sockaddr_in {
 	__be16 Port;
 	__be32 IPv4address;
 	__u8 Reserved[8];
 } __packed;

 struct smb_sockaddr_in6 {
 	__be16 Port;
 	__be32 FlowInfo;
 	__u8 IPv6address[16];
 	__be32 ScopeId;
 } __packed;

 #define INTERNETWORK	0x0002
 #define INTERNETWORKV6	0x0017

 struct sockaddr_storage_rsp {
 	__le16 Family;
 	union {
 		struct smb_sockaddr_in addr4;
 		struct smb_sockaddr_in6 addr6;
 	};
 } __packed;

 #define RSS_CAPABLE	0x00000001
 #define RDMA_CAPABLE	0x00000002

 struct network_interface_info_ioctl_rsp {
 	__le32 Next; /* next interface. zero if this is last one */
 	__le32 IfIndex;
 	__le32 Capability; /* RSS or RDMA Capable */
 	__le32 Reserved;
 	__le64 LinkSpeed;
 	char	SockAddr_Storage[128];
 } __packed;

 struct file_object_buf_type1_ioctl_rsp {
 	__u8 ObjectId[16];
 	__u8 BirthVolumeId[16];
 	__u8 BirthObjectId[16];
 	__u8 DomainId[16];
 } __packed;

 struct resume_key_ioctl_rsp {
 	__u64 ResumeKey[3];
 	__le32 ContextLength;
 	__u8 Context[4]; /* ignored, Windows sets to 4 bytes of zero */
 } __packed;

 struct copychunk_ioctl_req {
 	__le64 ResumeKey[3];
 	__le32 ChunkCount;
 	__le32 Reserved;
 	__u8 Chunks[1]; /* array of srv_copychunk */
 } __packed;

 struct srv_copychunk {
 	__le64 SourceOffset;
 	__le64 TargetOffset;
 	__le32 Length;
 	__le32 Reserved;
 } __packed;

 struct copychunk_ioctl_rsp {
 	__le32 ChunksWritten;
 	__le32 ChunkBytesWritten;
 	__le32 TotalBytesWritten;
 } __packed;

 struct file_sparse {
 	__u8	SetSparse;
 } __packed;

 /* FILE Info response size */
 #define FILE_DIRECTORY_INFORMATION_SIZE       1
 #define FILE_FULL_DIRECTORY_INFORMATION_SIZE  2
 #define FILE_BOTH_DIRECTORY_INFORMATION_SIZE  3
 #define FILE_BASIC_INFORMATION_SIZE           40
 #define FILE_STANDARD_INFORMATION_SIZE        24
 #define FILE_INTERNAL_INFORMATION_SIZE        8
 #define FILE_EA_INFORMATION_SIZE              4
 #define FILE_ACCESS_INFORMATION_SIZE          4
 #define FILE_NAME_INFORMATION_SIZE            9
 #define FILE_RENAME_INFORMATION_SIZE          10
 #define FILE_LINK_INFORMATION_SIZE            11
 #define FILE_NAMES_INFORMATION_SIZE           12
 #define FILE_DISPOSITION_INFORMATION_SIZE     13
 #define FILE_POSITION_INFORMATION_SIZE        14
 #define FILE_FULL_EA_INFORMATION_SIZE         15
 #define FILE_MODE_INFORMATION_SIZE            4
 #define FILE_ALIGNMENT_INFORMATION_SIZE       4
 #define FILE_ALL_INFORMATION_SIZE             104
 #define FILE_ALLOCATION_INFORMATION_SIZE      19
 #define FILE_END_OF_FILE_INFORMATION_SIZE     20
 #define FILE_ALTERNATE_NAME_INFORMATION_SIZE  8
 #define FILE_STREAM_INFORMATION_SIZE          32
 #define FILE_PIPE_INFORMATION_SIZE            23
 #define FILE_PIPE_LOCAL_INFORMATION_SIZE      24
 #define FILE_PIPE_REMOTE_INFORMATION_SIZE     25
 #define FILE_MAILSLOT_QUERY_INFORMATION_SIZE  26
 #define FILE_MAILSLOT_SET_INFORMATION_SIZE    27
 #define FILE_COMPRESSION_INFORMATION_SIZE     16
 #define FILE_OBJECT_ID_INFORMATION_SIZE       29
 /* Number 30 not defined in documents */
 #define FILE_MOVE_CLUSTER_INFORMATION_SIZE    31
 #define FILE_QUOTA_INFORMATION_SIZE           32
 #define FILE_REPARSE_POINT_INFORMATION_SIZE   33
 #define FILE_NETWORK_OPEN_INFORMATION_SIZE    56
 #define FILE_ATTRIBUTE_TAG_INFORMATION_SIZE   8

 /* FS Info response  size */
 #define FS_DEVICE_INFORMATION_SIZE     8
 #define FS_ATTRIBUTE_INFORMATION_SIZE  16
 #define FS_VOLUME_INFORMATION_SIZE     24
 #define FS_SIZE_INFORMATION_SIZE       24
 #define FS_FULL_SIZE_INFORMATION_SIZE  32
 #define FS_SECTOR_SIZE_INFORMATION_SIZE 28
 #define FS_OBJECT_ID_INFORMATION_SIZE 64
 #define FS_CONTROL_INFORMATION_SIZE 48
 #define FS_POSIX_INFORMATION_SIZE 56

 /* FS_ATTRIBUTE_File_System_Name */
 #define FS_TYPE_SUPPORT_SIZE   44
 struct fs_type_info {
 	char		*fs_name;
 	long		magic_number;
 } __packed;

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

 struct smb2_file_access_info {
 	__le32 AccessFlags;
 } __packed;

 struct smb2_file_alignment_info {
 	__le32 AlignmentRequirement;
 } __packed;

 struct smb2_file_basic_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 */
 } __packed;

 struct smb2_file_alt_name_info {
 	__le32 FileNameLength;
 	char FileName[];
 } __packed;

 struct smb2_file_stream_info {
 	__le32  NextEntryOffset;
 	__le32  StreamNameLength;
 	__le64 StreamSize;
 	__le64 StreamAllocationSize;
 	char   StreamName[];
 } __packed;

 struct smb2_file_ntwrk_info {
 	__le64 CreationTime;
 	__le64 LastAccessTime;
 	__le64 LastWriteTime;
 	__le64 ChangeTime;
 	__le64 AllocationSize;
 	__le64 EndOfFile;
 	__le32 Attributes;
 	__le32 Reserved;
 } __packed;

 struct smb2_file_standard_info {
 	__le64 AllocationSize;
 	__le64 EndOfFile;
 	__le32 NumberOfLinks;	/* hard links */
 	__u8   DeletePending;
 	__u8   Directory;
 	__le16 Reserved;
 } __packed; /* level 18 Query */

 struct smb2_file_ea_info {
 	__le32 EASize;
 } __packed;

 struct smb2_file_alloc_info {
 	__le64 AllocationSize;
 } __packed;

 struct smb2_file_disposition_info {
 	__u8 DeletePending;
 } __packed;

 struct smb2_file_pos_info {
 	__le64 CurrentByteOffset;
 } __packed;

 #define FILE_MODE_INFO_MASK cpu_to_le32(0x0000100e)

 struct smb2_file_mode_info {
 	__le32 Mode;
 } __packed;

 #define COMPRESSION_FORMAT_NONE 0x0000
 #define COMPRESSION_FORMAT_LZNT1 0x0002

 struct smb2_file_comp_info {
 	__le64 CompressedFileSize;
 	__le16 CompressionFormat;
 	__u8 CompressionUnitShift;
 	__u8 ChunkShift;
 	__u8 ClusterShift;
 	__u8 Reserved[3];
 } __packed;

 struct smb2_file_attr_tag_info {
 	__le32 FileAttributes;
 	__le32 ReparseTag;
 } __packed;

 #define SL_RESTART_SCAN	0x00000001
 #define SL_RETURN_SINGLE_ENTRY	0x00000002
 #define SL_INDEX_SPECIFIED	0x00000004

 struct smb2_ea_info_req {
 	__le32 NextEntryOffset;
 	__u8   EaNameLength;
 	char name[1];
 } __packed; /* level 15 Query */

 struct smb2_ea_info {
 	__le32 NextEntryOffset;
 	__u8   Flags;
 	__u8   EaNameLength;
 	__le16 EaValueLength;
 	char name[];
 	/* optionally followed by value */
 } __packed; /* level 15 Query */

 struct create_ea_buf_req {
 	struct create_context ccontext;
 	__u8   Name[8];
 	struct smb2_ea_info ea;
 } __packed;

 struct create_sd_buf_req {
 	struct create_context ccontext;
 	__u8   Name[8];
 	struct smb_ntsd ntsd;
 } __packed;

 struct smb2_posix_info {
 	__le32 NextEntryOffset;
 	__u32 Ignored;
 	__le64 CreationTime;
 	__le64 LastAccessTime;
 	__le64 LastWriteTime;
 	__le64 ChangeTime;
 	__le64 EndOfFile;
 	__le64 AllocationSize;
 	__le32 DosAttributes;
 	__le64 Inode;
 	__le32 DeviceId;
 	__le32 Zero;
 	/* beginning of POSIX Create Context Response */
 	__le32 HardLinks;
 	__le32 ReparseTag;
 	__le32 Mode;
 	/* SidBuffer contain two sids (UNIX user sid(16), UNIX group sid(16)) */
 	u8 SidBuffer[32];
 	__le32 name_len;
 	u8 name[];
 	/*
 	 * var sized owner SID
 	 * var sized group SID
 	 * le32 filenamelength
 	 * u8  filename[]
 	 */
 } __packed;

 /* functions */
 void init_smb2_1_server(struct ksmbd_conn *conn);
 void init_smb3_0_server(struct ksmbd_conn *conn);
 void init_smb3_02_server(struct ksmbd_conn *conn);
 int init_smb3_11_server(struct ksmbd_conn *conn);

 void init_smb2_max_read_size(unsigned int sz);
 void init_smb2_max_write_size(unsigned int sz);
 void init_smb2_max_trans_size(unsigned int sz);
 void init_smb2_max_credits(unsigned int sz);

 bool is_smb2_neg_cmd(struct ksmbd_work *work);
 bool is_smb2_rsp(struct ksmbd_work *work);

 u16 get_smb2_cmd_val(struct ksmbd_work *work);
 void set_smb2_rsp_status(struct ksmbd_work *work, __le32 err);
 int init_smb2_rsp_hdr(struct ksmbd_work *work);
 int smb2_allocate_rsp_buf(struct ksmbd_work *work);
 bool is_chained_smb2_message(struct ksmbd_work *work);
 int init_smb2_neg_rsp(struct ksmbd_work *work);
 void smb2_set_err_rsp(struct ksmbd_work *work);
 int smb2_check_user_session(struct ksmbd_work *work);
 int smb2_get_ksmbd_tcon(struct ksmbd_work *work);
 bool smb2_is_sign_req(struct ksmbd_work *work, unsigned int command);
 int smb2_check_sign_req(struct ksmbd_work *work);
 void smb2_set_sign_rsp(struct ksmbd_work *work);
 int smb3_check_sign_req(struct ksmbd_work *work);
 void smb3_set_sign_rsp(struct ksmbd_work *work);
 int find_matching_smb2_dialect(int start_index, __le16 *cli_dialects,
 			       __le16 dialects_count);
 struct file_lock *smb_flock_init(struct file *f);
 int setup_async_work(struct ksmbd_work *work, void (*fn)(void **),
 		     void **arg);
 void release_async_work(struct ksmbd_work *work);
 void smb2_send_interim_resp(struct ksmbd_work *work, __le32 status);
 struct channel *lookup_chann_list(struct ksmbd_session *sess,
 				  struct ksmbd_conn *conn);
 void smb3_preauth_hash_rsp(struct ksmbd_work *work);
 bool smb3_is_transform_hdr(void *buf);
 int smb3_decrypt_req(struct ksmbd_work *work);
 int smb3_encrypt_resp(struct ksmbd_work *work);
 bool smb3_11_final_sess_setup_resp(struct ksmbd_work *work);
 int smb2_set_rsp_credits(struct ksmbd_work *work);
 bool smb3_encryption_negotiated(struct ksmbd_conn *conn);

 /* smb2 misc functions */
 int ksmbd_smb2_check_message(struct ksmbd_work *work);

 /* smb2 command handlers */
 int smb2_handle_negotiate(struct ksmbd_work *work);
 int smb2_negotiate_request(struct ksmbd_work *work);
 int smb2_sess_setup(struct ksmbd_work *work);
 int smb2_tree_connect(struct ksmbd_work *work);
 int smb2_tree_disconnect(struct ksmbd_work *work);
 int smb2_session_logoff(struct ksmbd_work *work);
 int smb2_open(struct ksmbd_work *work);
 int smb2_query_info(struct ksmbd_work *work);
 int smb2_query_dir(struct ksmbd_work *work);
 int smb2_close(struct ksmbd_work *work);
 int smb2_echo(struct ksmbd_work *work);
 int smb2_set_info(struct ksmbd_work *work);
 int smb2_read(struct ksmbd_work *work);
 int smb2_write(struct ksmbd_work *work);
 int smb2_flush(struct ksmbd_work *work);
 int smb2_cancel(struct ksmbd_work *work);
 int smb2_lock(struct ksmbd_work *work);
 int smb2_ioctl(struct ksmbd_work *work);
 int smb2_oplock_break(struct ksmbd_work *work);
 int smb2_notify(struct ksmbd_work *ksmbd_work);

 /*
  * Get the body of the smb2 message excluding the 4 byte rfc1002 headers
  * from request/response buffer.
  */
 static inline void *smb2_get_msg(void *buf)
 {
 	return buf + 4;
 }

 #endif	/* _SMB2PDU_H */
	/* SPDX-License-Identifier: GPL-2.0-or-later */
	/*
	* Copyright (C) 2016 Namjae Jeon <linkinjeon@kernel.org>
	* Copyright (C) 2018 Samsung Electronics Co., Ltd.
	*/

	#ifndef _SMB2PDU_H
	#define _SMB2PDU_H

	#include "ntlmssp.h"
	#include "smbacl.h"

	/Create Action Flags/
	#define FILE_SUPERSEDED 0x00000000
	#define FILE_OPENED 0x00000001
	#define FILE_CREATED 0x00000002
	#define FILE_OVERWRITTEN 0x00000003

	/* SMB2 Max Credits */
	#define SMB2_MAX_CREDITS 8192

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

	#define SMB21_DEFAULT_IOSIZE (1024 * 1024)
	#define SMB3_DEFAULT_TRANS_SIZE (1024 * 1024)
	#define SMB3_MIN_IOSIZE (64 * 1024)
	#define SMB3_MAX_IOSIZE (8 * 1024 * 1024)
	#define SMB3_MAX_MSGSIZE (4 * 4096)

	/*
	* 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.
	*
	*/

	struct preauth_integrity_info {
	/* PreAuth integrity Hash ID */
	__le16 Preauth_HashId;
	/* PreAuth integrity Hash Value */
	__u8 Preauth_HashValue[SMB2_PREAUTH_HASH_SIZE];
	};

	/* offset is sizeof smb2_negotiate_rsp but rounded up to 8 bytes. */
	#ifdef CONFIG_SMB_SERVER_KERBEROS5
	/* sizeof(struct smb2_negotiate_rsp) =
	* header(64) + response(64) + GSS_LENGTH(96) + GSS_PADDING(0)
	*/
	#define OFFSET_OF_NEG_CONTEXT 0xe0
	#else
	/* sizeof(struct smb2_negotiate_rsp) =
	* header(64) + response(64) + GSS_LENGTH(74) + GSS_PADDING(6)
	*/
	#define OFFSET_OF_NEG_CONTEXT 0xd0
	#endif

	#define SMB2_SESSION_EXPIRED (0)
	#define SMB2_SESSION_IN_PROGRESS BIT(0)
	#define SMB2_SESSION_VALID BIT(1)

	#define SMB2_SESSION_TIMEOUT (10 * HZ)

	struct create_durable_req_v2 {
	struct create_context ccontext;
	__u8 Name[8];
	__le32 Timeout;
	__le32 Flags;
	__u8 Reserved[8];
	__u8 CreateGuid[16];
	} __packed;

	struct create_durable_reconn_v2_req {
	struct create_context ccontext;
	__u8 Name[8];
	struct {
	__u64 PersistentFileId;
	__u64 VolatileFileId;
	} Fid;
	__u8 CreateGuid[16];
	__le32 Flags;
	} __packed;

	struct create_alloc_size_req {
	struct create_context ccontext;
	__u8 Name[8];
	__le64 AllocationSize;
	} __packed;

	struct create_durable_rsp {
	struct create_context ccontext;
	__u8 Name[8];
	union {
	__u8 Reserved[8];
	__u64 data;
	} Data;
	} __packed;

	struct create_durable_v2_rsp {
	struct create_context ccontext;
	__u8 Name[8];
	__le32 Timeout;
	__le32 Flags;
	} __packed;

	/* equivalent of the contents of SMB3.1.1 POSIX open context response */
	struct create_posix_rsp {
	struct create_context ccontext;
	__u8 Name[16];
	__le32 nlink;
	__le32 reparse_tag;
	__le32 mode;
	/* SidBuffer contain two sids(Domain sid(28), UNIX group sid(16)) */
	u8 SidBuffer[44];
	} __packed;

	struct smb2_buffer_desc_v1 {
	__le64 offset;
	__le32 token;
	__le32 length;
	} __packed;

	#define SMB2_0_IOCTL_IS_FSCTL 0x00000001

	struct smb_sockaddr_in {
	__be16 Port;
	__be32 IPv4address;
	__u8 Reserved[8];
	} __packed;

	struct smb_sockaddr_in6 {
	__be16 Port;
	__be32 FlowInfo;
	__u8 IPv6address[16];
	__be32 ScopeId;
	} __packed;

	#define INTERNETWORK 0x0002
	#define INTERNETWORKV6 0x0017

	struct sockaddr_storage_rsp {
	__le16 Family;
	union {
	struct smb_sockaddr_in addr4;
	struct smb_sockaddr_in6 addr6;
	};
	} __packed;

	#define RSS_CAPABLE 0x00000001
	#define RDMA_CAPABLE 0x00000002

	struct network_interface_info_ioctl_rsp {
	__le32 Next; /* next interface. zero if this is last one */
	__le32 IfIndex;
	__le32 Capability; /* RSS or RDMA Capable */
	__le32 Reserved;
	__le64 LinkSpeed;
	char SockAddr_Storage[128];
	} __packed;

	struct file_object_buf_type1_ioctl_rsp {
	__u8 ObjectId[16];
	__u8 BirthVolumeId[16];
	__u8 BirthObjectId[16];
	__u8 DomainId[16];
	} __packed;

	struct resume_key_ioctl_rsp {
	__u64 ResumeKey[3];
	__le32 ContextLength;
	__u8 Context[4]; /* ignored, Windows sets to 4 bytes of zero */
	} __packed;

	struct copychunk_ioctl_req {
	__le64 ResumeKey[3];
	__le32 ChunkCount;
	__le32 Reserved;
	__u8 Chunks[1]; /* array of srv_copychunk */
	} __packed;

	struct srv_copychunk {
	__le64 SourceOffset;
	__le64 TargetOffset;
	__le32 Length;
	__le32 Reserved;
	} __packed;

	struct copychunk_ioctl_rsp {
	__le32 ChunksWritten;
	__le32 ChunkBytesWritten;
	__le32 TotalBytesWritten;
	} __packed;

	struct file_sparse {
	__u8 SetSparse;
	} __packed;

	/* FILE Info response size */
	#define FILE_DIRECTORY_INFORMATION_SIZE 1
	#define FILE_FULL_DIRECTORY_INFORMATION_SIZE 2
	#define FILE_BOTH_DIRECTORY_INFORMATION_SIZE 3
	#define FILE_BASIC_INFORMATION_SIZE 40
	#define FILE_STANDARD_INFORMATION_SIZE 24
	#define FILE_INTERNAL_INFORMATION_SIZE 8
	#define FILE_EA_INFORMATION_SIZE 4
	#define FILE_ACCESS_INFORMATION_SIZE 4
	#define FILE_NAME_INFORMATION_SIZE 9
	#define FILE_RENAME_INFORMATION_SIZE 10
	#define FILE_LINK_INFORMATION_SIZE 11
	#define FILE_NAMES_INFORMATION_SIZE 12
	#define FILE_DISPOSITION_INFORMATION_SIZE 13
	#define FILE_POSITION_INFORMATION_SIZE 14
	#define FILE_FULL_EA_INFORMATION_SIZE 15
	#define FILE_MODE_INFORMATION_SIZE 4
	#define FILE_ALIGNMENT_INFORMATION_SIZE 4
	#define FILE_ALL_INFORMATION_SIZE 104
	#define FILE_ALLOCATION_INFORMATION_SIZE 19
	#define FILE_END_OF_FILE_INFORMATION_SIZE 20
	#define FILE_ALTERNATE_NAME_INFORMATION_SIZE 8
	#define FILE_STREAM_INFORMATION_SIZE 32
	#define FILE_PIPE_INFORMATION_SIZE 23
	#define FILE_PIPE_LOCAL_INFORMATION_SIZE 24
	#define FILE_PIPE_REMOTE_INFORMATION_SIZE 25
	#define FILE_MAILSLOT_QUERY_INFORMATION_SIZE 26
	#define FILE_MAILSLOT_SET_INFORMATION_SIZE 27
	#define FILE_COMPRESSION_INFORMATION_SIZE 16
	#define FILE_OBJECT_ID_INFORMATION_SIZE 29
	/* Number 30 not defined in documents */
	#define FILE_MOVE_CLUSTER_INFORMATION_SIZE 31
	#define FILE_QUOTA_INFORMATION_SIZE 32
	#define FILE_REPARSE_POINT_INFORMATION_SIZE 33
	#define FILE_NETWORK_OPEN_INFORMATION_SIZE 56
	#define FILE_ATTRIBUTE_TAG_INFORMATION_SIZE 8

	/* FS Info response size */
	#define FS_DEVICE_INFORMATION_SIZE 8
	#define FS_ATTRIBUTE_INFORMATION_SIZE 16
	#define FS_VOLUME_INFORMATION_SIZE 24
	#define FS_SIZE_INFORMATION_SIZE 24
	#define FS_FULL_SIZE_INFORMATION_SIZE 32
	#define FS_SECTOR_SIZE_INFORMATION_SIZE 28
	#define FS_OBJECT_ID_INFORMATION_SIZE 64
	#define FS_CONTROL_INFORMATION_SIZE 48
	#define FS_POSIX_INFORMATION_SIZE 56

	/* FS_ATTRIBUTE_File_System_Name */
	#define FS_TYPE_SUPPORT_SIZE 44
	struct fs_type_info {
	char *fs_name;
	long magic_number;
	} __packed;

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

	struct smb2_file_access_info {
	__le32 AccessFlags;
	} __packed;

	struct smb2_file_alignment_info {
	__le32 AlignmentRequirement;
	} __packed;

	struct smb2_file_basic_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 */
	} __packed;

	struct smb2_file_alt_name_info {
	__le32 FileNameLength;
	char FileName[];
	} __packed;

	struct smb2_file_stream_info {
	__le32 NextEntryOffset;
	__le32 StreamNameLength;
	__le64 StreamSize;
	__le64 StreamAllocationSize;
	char StreamName[];
	} __packed;

	struct smb2_file_ntwrk_info {
	__le64 CreationTime;
	__le64 LastAccessTime;
	__le64 LastWriteTime;
	__le64 ChangeTime;
	__le64 AllocationSize;
	__le64 EndOfFile;
	__le32 Attributes;
	__le32 Reserved;
	} __packed;

	struct smb2_file_standard_info {
	__le64 AllocationSize;
	__le64 EndOfFile;
	__le32 NumberOfLinks; /* hard links */
	__u8 DeletePending;
	__u8 Directory;
	__le16 Reserved;
	} __packed; /* level 18 Query */

	struct smb2_file_ea_info {
	__le32 EASize;
	} __packed;

	struct smb2_file_alloc_info {
	__le64 AllocationSize;
	} __packed;

	struct smb2_file_disposition_info {
	__u8 DeletePending;
	} __packed;

	struct smb2_file_pos_info {
	__le64 CurrentByteOffset;
	} __packed;

	#define FILE_MODE_INFO_MASK cpu_to_le32(0x0000100e)

	struct smb2_file_mode_info {
	__le32 Mode;
	} __packed;

	#define COMPRESSION_FORMAT_NONE 0x0000
	#define COMPRESSION_FORMAT_LZNT1 0x0002

	struct smb2_file_comp_info {
	__le64 CompressedFileSize;
	__le16 CompressionFormat;
	__u8 CompressionUnitShift;
	__u8 ChunkShift;
	__u8 ClusterShift;
	__u8 Reserved[3];
	} __packed;

	struct smb2_file_attr_tag_info {
	__le32 FileAttributes;
	__le32 ReparseTag;
	} __packed;

	#define SL_RESTART_SCAN 0x00000001
	#define SL_RETURN_SINGLE_ENTRY 0x00000002
	#define SL_INDEX_SPECIFIED 0x00000004

	struct smb2_ea_info_req {
	__le32 NextEntryOffset;
	__u8 EaNameLength;
	char name[1];
	} __packed; /* level 15 Query */

	struct smb2_ea_info {
	__le32 NextEntryOffset;
	__u8 Flags;
	__u8 EaNameLength;
	__le16 EaValueLength;
	char name[];
	/* optionally followed by value */
	} __packed; /* level 15 Query */

	struct create_ea_buf_req {
	struct create_context ccontext;
	__u8 Name[8];
	struct smb2_ea_info ea;
	} __packed;

	struct create_sd_buf_req {
	struct create_context ccontext;
	__u8 Name[8];
	struct smb_ntsd ntsd;
	} __packed;

	struct smb2_posix_info {
	__le32 NextEntryOffset;
	__u32 Ignored;
	__le64 CreationTime;
	__le64 LastAccessTime;
	__le64 LastWriteTime;
	__le64 ChangeTime;
	__le64 EndOfFile;
	__le64 AllocationSize;
	__le32 DosAttributes;
	__le64 Inode;
	__le32 DeviceId;
	__le32 Zero;
	/* beginning of POSIX Create Context Response */
	__le32 HardLinks;
	__le32 ReparseTag;
	__le32 Mode;
	/* SidBuffer contain two sids (UNIX user sid(16), UNIX group sid(16)) */
	u8 SidBuffer[32];
	__le32 name_len;
	u8 name[];
	/*
	* var sized owner SID
	* var sized group SID
	* le32 filenamelength
	* u8 filename[]
	*/
	} __packed;

	/* functions */
	void init_smb2_1_server(struct ksmbd_conn *conn);
	void init_smb3_0_server(struct ksmbd_conn *conn);
	void init_smb3_02_server(struct ksmbd_conn *conn);
	int init_smb3_11_server(struct ksmbd_conn *conn);

	void init_smb2_max_read_size(unsigned int sz);
	void init_smb2_max_write_size(unsigned int sz);
	void init_smb2_max_trans_size(unsigned int sz);
	void init_smb2_max_credits(unsigned int sz);

	bool is_smb2_neg_cmd(struct ksmbd_work *work);
	bool is_smb2_rsp(struct ksmbd_work *work);

	u16 get_smb2_cmd_val(struct ksmbd_work *work);
	void set_smb2_rsp_status(struct ksmbd_work *work, __le32 err);
	int init_smb2_rsp_hdr(struct ksmbd_work *work);
	int smb2_allocate_rsp_buf(struct ksmbd_work *work);
	bool is_chained_smb2_message(struct ksmbd_work *work);
	int init_smb2_neg_rsp(struct ksmbd_work *work);
	void smb2_set_err_rsp(struct ksmbd_work *work);
	int smb2_check_user_session(struct ksmbd_work *work);
	int smb2_get_ksmbd_tcon(struct ksmbd_work *work);
	bool smb2_is_sign_req(struct ksmbd_work *work, unsigned int command);
	int smb2_check_sign_req(struct ksmbd_work *work);
	void smb2_set_sign_rsp(struct ksmbd_work *work);
	int smb3_check_sign_req(struct ksmbd_work *work);
	void smb3_set_sign_rsp(struct ksmbd_work *work);
	int find_matching_smb2_dialect(int start_index, __le16 *cli_dialects,
	__le16 dialects_count);
	struct file_lock smb_flock_init(struct file f);
	int setup_async_work(struct ksmbd_work work, void (fn)(void **),
	void **arg);
	void release_async_work(struct ksmbd_work *work);
	void smb2_send_interim_resp(struct ksmbd_work *work, __le32 status);
	struct channel lookup_chann_list(struct ksmbd_session sess,
	struct ksmbd_conn *conn);
	void smb3_preauth_hash_rsp(struct ksmbd_work *work);
	bool smb3_is_transform_hdr(void *buf);
	int smb3_decrypt_req(struct ksmbd_work *work);
	int smb3_encrypt_resp(struct ksmbd_work *work);
	bool smb3_11_final_sess_setup_resp(struct ksmbd_work *work);
	int smb2_set_rsp_credits(struct ksmbd_work *work);
	bool smb3_encryption_negotiated(struct ksmbd_conn *conn);

	/* smb2 misc functions */
	int ksmbd_smb2_check_message(struct ksmbd_work *work);

	/* smb2 command handlers */
	int smb2_handle_negotiate(struct ksmbd_work *work);
	int smb2_negotiate_request(struct ksmbd_work *work);
	int smb2_sess_setup(struct ksmbd_work *work);
	int smb2_tree_connect(struct ksmbd_work *work);
	int smb2_tree_disconnect(struct ksmbd_work *work);
	int smb2_session_logoff(struct ksmbd_work *work);
	int smb2_open(struct ksmbd_work *work);
	int smb2_query_info(struct ksmbd_work *work);
	int smb2_query_dir(struct ksmbd_work *work);
	int smb2_close(struct ksmbd_work *work);
	int smb2_echo(struct ksmbd_work *work);
	int smb2_set_info(struct ksmbd_work *work);
	int smb2_read(struct ksmbd_work *work);
	int smb2_write(struct ksmbd_work *work);
	int smb2_flush(struct ksmbd_work *work);
	int smb2_cancel(struct ksmbd_work *work);
	int smb2_lock(struct ksmbd_work *work);
	int smb2_ioctl(struct ksmbd_work *work);
	int smb2_oplock_break(struct ksmbd_work *work);
	int smb2_notify(struct ksmbd_work *ksmbd_work);

	/*
	* Get the body of the smb2 message excluding the 4 byte rfc1002 headers
	* from request/response buffer.
	*/
	static inline void smb2_get_msg(void buf)
	{
	return buf + 4;
	}

	#endif /* _SMB2PDU_H */