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smb2pdu.h
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smb2pdu.h
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/* SPDX-License-Identifier: LGPL-2.1 */
#ifndef _COMMON_SMB2PDU_H
#define _COMMON_SMB2PDU_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
* 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 SMB2_INTERNAL_CMD cpu_to_le16(0xFFFF)
#define NUMBER_OF_SMB2_COMMANDS 0x0013
/*
* Size of the session key (crypto key encrypted with the password
*/
#define SMB2_NTLMV2_SESSKEY_SIZE 16
#define SMB2_SIGNATURE_SIZE 16
#define SMB2_HMACSHA256_SIZE 32
#define SMB2_CMACAES_SIZE 16
#define SMB3_GCM128_CRYPTKEY_SIZE 16
#define SMB3_GCM256_CRYPTKEY_SIZE 32
/*
* Size of the smb3 encryption/decryption keys
* This size is big enough to store any cipher key types.
*/
#define SMB3_ENC_DEC_KEY_SIZE 32
/*
* Size of the smb3 signing key
*/
#define SMB3_SIGN_KEY_SIZE 16
#define CIFS_CLIENT_CHALLENGE_SIZE 8
/* Maximum buffer size value we can send with 1 credit */
#define SMB2_MAX_BUFFER_SIZE 65536
/*
* The default wsize is 1M for SMB2 (and for some CIFS cases).
* find_get_pages seems to return a maximum of 256
* pages in a single call. With PAGE_SIZE == 4k, this means we can
* fill a single wsize request with a single call.
*/
#define SMB3_DEFAULT_IOSIZE (4 * 1024 * 1024)
/*
* 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 64
#define SMB2_HEADER_STRUCTURE_SIZE \
cpu_to_le16(__SMB2_HEADER_STRUCTURE_SIZE)
#define SMB2_PROTO_NUMBER cpu_to_le32(0x424d53fe)
#define SMB2_TRANSFORM_PROTO_NUM cpu_to_le32(0x424d53fd)
#define SMB2_COMPRESSION_TRANSFORM_ID cpu_to_le32(0x424d53fc)
/*
* SMB2 flag definitions
*/
#define SMB2_FLAGS_SERVER_TO_REDIR cpu_to_le32(0x00000001)
#define SMB2_FLAGS_ASYNC_COMMAND cpu_to_le32(0x00000002)
#define SMB2_FLAGS_RELATED_OPERATIONS cpu_to_le32(0x00000004)
#define SMB2_FLAGS_SIGNED cpu_to_le32(0x00000008)
#define SMB2_FLAGS_PRIORITY_MASK cpu_to_le32(0x00000070) /* SMB3.1.1 */
#define SMB2_FLAGS_DFS_OPERATIONS cpu_to_le32(0x10000000)
#define SMB2_FLAGS_REPLAY_OPERATION cpu_to_le32(0x20000000) /* SMB3 & up */
/*
* 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.
*
*/
/* See MS-SMB2 section 2.2.1 */
struct smb2_hdr {
__le32 ProtocolId; /* 0xFE 'S' 'M' 'B' */
__le16 StructureSize; /* 64 */
__le16 CreditCharge; /* MBZ */
__le32 Status; /* Error from server */
__le16 Command;
__le16 CreditRequest; /* CreditResponse */
__le32 Flags;
__le32 NextCommand;
__le64 MessageId;
union {
struct {
__le32 ProcessId;
__le32 TreeId;
} __packed SyncId;
__le64 AsyncId;
} __packed Id;
__le64 SessionId;
__u8 Signature[16];
} __packed;
struct smb2_pdu {
struct smb2_hdr hdr;
__le16 StructureSize2; /* size of wct area (varies, request specific) */
} __packed;
#define SMB2_ERROR_STRUCTURE_SIZE2 9
#define SMB2_ERROR_STRUCTURE_SIZE2_LE cpu_to_le16(SMB2_ERROR_STRUCTURE_SIZE2)
struct smb2_err_rsp {
struct smb2_hdr hdr;
__le16 StructureSize;
__u8 ErrorContextCount;
__u8 Reserved;
__le32 ByteCount; /* even if zero, at least one byte follows */
__u8 ErrorData[1]; /* variable length */
} __packed;
#define SMB3_AES_CCM_NONCE 11
#define SMB3_AES_GCM_NONCE 12
/* Transform flags (for 3.0 dialect this flag indicates CCM */
#define TRANSFORM_FLAG_ENCRYPTED 0x0001
struct smb2_transform_hdr {
__le32 ProtocolId; /* 0xFD 'S' 'M' 'B' */
__u8 Signature[16];
__u8 Nonce[16];
__le32 OriginalMessageSize;
__u16 Reserved1;
__le16 Flags; /* EncryptionAlgorithm for 3.0, enc enabled for 3.1.1 */
__le64 SessionId;
} __packed;
/* See MS-SMB2 2.2.42 */
struct smb2_compression_transform_hdr_unchained {
__le32 ProtocolId; /* 0xFC 'S' 'M' 'B' */
__le32 OriginalCompressedSegmentSize;
__le16 CompressionAlgorithm;
__le16 Flags;
__le16 Length; /* if chained it is length, else offset */
} __packed;
/* See MS-SMB2 2.2.42.1 */
#define SMB2_COMPRESSION_FLAG_NONE 0x0000
#define SMB2_COMPRESSION_FLAG_CHAINED 0x0001
struct compression_payload_header {
__le16 CompressionAlgorithm;
__le16 Flags;
__le32 Length; /* length of compressed playload including field below if present */
/* __le32 OriginalPayloadSize; */ /* optional, present when LZNT1, LZ77, LZ77+Huffman */
} __packed;
/* See MS-SMB2 2.2.42.2 */
struct smb2_compression_transform_hdr_chained {
__le32 ProtocolId; /* 0xFC 'S' 'M' 'B' */
__le32 OriginalCompressedSegmentSize;
/* struct compression_payload_header[] */
} __packed;
/* See MS-SMB2 2.2.42.2.2 */
struct compression_pattern_payload_v1 {
__le16 Pattern;
__le16 Reserved1;
__le16 Reserved2;
__le32 Repetitions;
} __packed;
/* See MS-SMB2 section 2.2.9.2 */
/* Context Types */
#define SMB2_RESERVED_TREE_CONNECT_CONTEXT_ID 0x0000
#define SMB2_REMOTED_IDENTITY_TREE_CONNECT_CONTEXT_ID cpu_to_le16(0x0001)
struct tree_connect_contexts {
__le16 ContextType;
__le16 DataLength;
__le32 Reserved;
__u8 Data[];
} __packed;
/* Remoted identity tree connect context structures - see MS-SMB2 2.2.9.2.1 */
struct smb3_blob_data {
__le16 BlobSize;
__u8 BlobData[];
} __packed;
/* Valid values for Attr */
#define SE_GROUP_MANDATORY 0x00000001
#define SE_GROUP_ENABLED_BY_DEFAULT 0x00000002
#define SE_GROUP_ENABLED 0x00000004
#define SE_GROUP_OWNER 0x00000008
#define SE_GROUP_USE_FOR_DENY_ONLY 0x00000010
#define SE_GROUP_INTEGRITY 0x00000020
#define SE_GROUP_INTEGRITY_ENABLED 0x00000040
#define SE_GROUP_RESOURCE 0x20000000
#define SE_GROUP_LOGON_ID 0xC0000000
/* struct sid_attr_data is SidData array in BlobData format then le32 Attr */
struct sid_array_data {
__le16 SidAttrCount;
/* SidAttrList - array of sid_attr_data structs */
} __packed;
struct luid_attr_data {
} __packed;
/*
* struct privilege_data is the same as BLOB_DATA - see MS-SMB2 2.2.9.2.1.5
* but with size of LUID_ATTR_DATA struct and BlobData set to LUID_ATTR DATA
*/
struct privilege_array_data {
__le16 PrivilegeCount;
/* array of privilege_data structs */
} __packed;
struct remoted_identity_tcon_context {
__le16 TicketType; /* must be 0x0001 */
__le16 TicketSize; /* total size of this struct */
__le16 User; /* offset to SID_ATTR_DATA struct with user info */
__le16 UserName; /* offset to null terminated Unicode username string */
__le16 Domain; /* offset to null terminated Unicode domain name */
__le16 Groups; /* offset to SID_ARRAY_DATA struct with group info */
__le16 RestrictedGroups; /* similar to above */
__le16 Privileges; /* offset to PRIVILEGE_ARRAY_DATA struct */
__le16 PrimaryGroup; /* offset to SID_ARRAY_DATA struct */
__le16 Owner; /* offset to BLOB_DATA struct */
__le16 DefaultDacl; /* offset to BLOB_DATA struct */
__le16 DeviceGroups; /* offset to SID_ARRAY_DATA struct */
__le16 UserClaims; /* offset to BLOB_DATA struct */
__le16 DeviceClaims; /* offset to BLOB_DATA struct */
__u8 TicketInfo[]; /* variable length buf - remoted identity data */
} __packed;
struct smb2_tree_connect_req_extension {
__le32 TreeConnectContextOffset;
__le16 TreeConnectContextCount;
__u8 Reserved[10];
__u8 PathName[]; /* variable sized array */
/* followed by array of TreeConnectContexts */
} __packed;
/* Flags/Reserved for SMB3.1.1 */
#define SMB2_TREE_CONNECT_FLAG_CLUSTER_RECONNECT cpu_to_le16(0x0001)
#define SMB2_TREE_CONNECT_FLAG_REDIRECT_TO_OWNER cpu_to_le16(0x0002)
#define SMB2_TREE_CONNECT_FLAG_EXTENSION_PRESENT cpu_to_le16(0x0004)
struct smb2_tree_connect_req {
struct smb2_hdr hdr;
__le16 StructureSize; /* Must be 9 */
__le16 Flags; /* Flags in SMB3.1.1 */
__le16 PathOffset;
__le16 PathLength;
__u8 Buffer[1]; /* variable length */
} __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_V1 0x00002000
#define SHI1005_FLAGS_ENABLE_HASH_V2 0x00004000
#define SHI1005_FLAGS_ENCRYPT_DATA 0x00008000
#define SMB2_SHAREFLAG_IDENTITY_REMOTING 0x00040000 /* 3.1.1 */
#define SMB2_SHAREFLAG_COMPRESS_DATA 0x00100000 /* 3.1.1 */
#define SHI1005_FLAGS_ALL 0x0014FF33
/* Possible share capabilities */
#define SMB2_SHARE_CAP_DFS cpu_to_le32(0x00000008) /* all dialects */
#define SMB2_SHARE_CAP_CONTINUOUS_AVAILABILITY cpu_to_le32(0x00000010) /* 3.0 */
#define SMB2_SHARE_CAP_SCALEOUT cpu_to_le32(0x00000020) /* 3.0 */
#define SMB2_SHARE_CAP_CLUSTER cpu_to_le32(0x00000040) /* 3.0 */
#define SMB2_SHARE_CAP_ASYMMETRIC cpu_to_le32(0x00000080) /* 3.02 */
#define SMB2_SHARE_CAP_REDIRECT_TO_OWNER cpu_to_le32(0x00000100) /* 3.1.1 */
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;
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;
/*
* SMB2_NEGOTIATE_PROTOCOL See MS-SMB2 section 2.2.3
*/
/* SecurityMode flags */
#define SMB2_NEGOTIATE_SIGNING_ENABLED 0x0001
#define SMB2_NEGOTIATE_SIGNING_ENABLED_LE cpu_to_le16(0x0001)
#define SMB2_NEGOTIATE_SIGNING_REQUIRED 0x0002
#define SMB2_NEGOTIATE_SIGNING_REQUIRED_LE cpu_to_le16(0x0002)
#define SMB2_SEC_MODE_FLAGS_ALL 0x0003
/* 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 */
#define SMB2_GLOBAL_CAP_MULTI_CHANNEL 0x00000008 /* New to SMB3 */
#define SMB2_GLOBAL_CAP_PERSISTENT_HANDLES 0x00000010 /* New to SMB3 */
#define SMB2_GLOBAL_CAP_DIRECTORY_LEASING 0x00000020 /* New to SMB3 */
#define SMB2_GLOBAL_CAP_ENCRYPTION 0x00000040 /* New to SMB3 */
/* Internal types */
#define SMB2_NT_FIND 0x00100000
#define SMB2_LARGE_FILES 0x00200000
#define SMB2_CLIENT_GUID_SIZE 16
#define SMB2_CREATE_GUID_SIZE 16
/* Dialects */
#define SMB10_PROT_ID 0x0000 /* local only, not sent on wire w/CIFS negprot */
#define SMB20_PROT_ID 0x0202
#define SMB21_PROT_ID 0x0210
#define SMB2X_PROT_ID 0x02FF
#define SMB30_PROT_ID 0x0300
#define SMB302_PROT_ID 0x0302
#define SMB311_PROT_ID 0x0311
#define BAD_PROT_ID 0xFFFF
#define SMB311_SALT_SIZE 32
/* Hash Algorithm Types */
#define SMB2_PREAUTH_INTEGRITY_SHA512 cpu_to_le16(0x0001)
#define SMB2_PREAUTH_HASH_SIZE 64
/* Negotiate Contexts - ContextTypes. See MS-SMB2 section 2.2.3.1 for details */
#define SMB2_PREAUTH_INTEGRITY_CAPABILITIES cpu_to_le16(1)
#define SMB2_ENCRYPTION_CAPABILITIES cpu_to_le16(2)
#define SMB2_COMPRESSION_CAPABILITIES cpu_to_le16(3)
#define SMB2_NETNAME_NEGOTIATE_CONTEXT_ID cpu_to_le16(5)
#define SMB2_TRANSPORT_CAPABILITIES cpu_to_le16(6)
#define SMB2_RDMA_TRANSFORM_CAPABILITIES cpu_to_le16(7)
#define SMB2_SIGNING_CAPABILITIES cpu_to_le16(8)
#define SMB2_POSIX_EXTENSIONS_AVAILABLE cpu_to_le16(0x100)
struct smb2_neg_context {
__le16 ContextType;
__le16 DataLength;
__le32 Reserved;
/* Followed by array of data. NOTE: some servers require padding to 8 byte boundary */
} __packed;
/*
* SaltLength that the server send can be zero, so the only three required
* fields (all __le16) end up six bytes total, so the minimum context data len
* in the response is six bytes which accounts for
*
* HashAlgorithmCount, SaltLength, and 1 HashAlgorithm.
*/
#define MIN_PREAUTH_CTXT_DATA_LEN 6
struct smb2_preauth_neg_context {
__le16 ContextType; /* 1 */
__le16 DataLength;
__le32 Reserved;
__le16 HashAlgorithmCount; /* 1 */
__le16 SaltLength;
__le16 HashAlgorithms; /* HashAlgorithms[0] since only one defined */
__u8 Salt[SMB311_SALT_SIZE];
} __packed;
/* Encryption Algorithms Ciphers */
#define SMB2_ENCRYPTION_AES128_CCM cpu_to_le16(0x0001)
#define SMB2_ENCRYPTION_AES128_GCM cpu_to_le16(0x0002)
#define SMB2_ENCRYPTION_AES256_CCM cpu_to_le16(0x0003)
#define SMB2_ENCRYPTION_AES256_GCM cpu_to_le16(0x0004)
/* Min encrypt context data is one cipher so 2 bytes + 2 byte count field */
#define MIN_ENCRYPT_CTXT_DATA_LEN 4
struct smb2_encryption_neg_context {
__le16 ContextType; /* 2 */
__le16 DataLength;
__le32 Reserved;
/* CipherCount usally 2, but can be 3 when AES256-GCM enabled */
__le16 CipherCount; /* AES128-GCM and AES128-CCM by default */
__le16 Ciphers[];
} __packed;
/* See MS-SMB2 2.2.3.1.3 */
#define SMB3_COMPRESS_NONE cpu_to_le16(0x0000)
#define SMB3_COMPRESS_LZNT1 cpu_to_le16(0x0001)
#define SMB3_COMPRESS_LZ77 cpu_to_le16(0x0002)
#define SMB3_COMPRESS_LZ77_HUFF cpu_to_le16(0x0003)
/* Pattern scanning algorithm See MS-SMB2 3.1.4.4.1 */
#define SMB3_COMPRESS_PATTERN cpu_to_le16(0x0004) /* Pattern_V1 */
/* Compression Flags */
#define SMB2_COMPRESSION_CAPABILITIES_FLAG_NONE cpu_to_le32(0x00000000)
#define SMB2_COMPRESSION_CAPABILITIES_FLAG_CHAINED cpu_to_le32(0x00000001)
struct smb2_compression_capabilities_context {
__le16 ContextType; /* 3 */
__le16 DataLength;
__le32 Reserved;
__le16 CompressionAlgorithmCount;
__le16 Padding;
__le32 Flags;
__le16 CompressionAlgorithms[3];
__u16 Pad; /* Some servers require pad to DataLen multiple of 8 */
/* Check if pad needed */
} __packed;
/*
* For smb2_netname_negotiate_context_id See MS-SMB2 2.2.3.1.4.
* Its struct simply contains NetName, an array of Unicode characters
*/
struct smb2_netname_neg_context {
__le16 ContextType; /* 5 */
__le16 DataLength;
__le32 Reserved;
__le16 NetName[]; /* hostname of target converted to UCS-2 */
} __packed;
/*
* For smb2_transport_capabilities context see MS-SMB2 2.2.3.1.5
* and 2.2.4.1.5
*/
/* Flags */
#define SMB2_ACCEPT_TRANSPORT_LEVEL_SECURITY 0x00000001
struct smb2_transport_capabilities_context {
__le16 ContextType; /* 6 */
__le16 DataLength;
__u32 Reserved;
__le32 Flags;
__u32 Pad;
} __packed;
/*
* For rdma transform capabilities context see MS-SMB2 2.2.3.1.6
* and 2.2.4.1.6
*/
/* RDMA Transform IDs */
#define SMB2_RDMA_TRANSFORM_NONE 0x0000
#define SMB2_RDMA_TRANSFORM_ENCRYPTION 0x0001
#define SMB2_RDMA_TRANSFORM_SIGNING 0x0002
struct smb2_rdma_transform_capabilities_context {
__le16 ContextType; /* 7 */
__le16 DataLength;
__u32 Reserved;
__le16 TransformCount;
__u16 Reserved1;
__u32 Reserved2;
__le16 RDMATransformIds[];
} __packed;
/*
* For signing capabilities context see MS-SMB2 2.2.3.1.7
* and 2.2.4.1.7
*/
/* Signing algorithms */
#define SIGNING_ALG_HMAC_SHA256 0
#define SIGNING_ALG_HMAC_SHA256_LE cpu_to_le16(0)
#define SIGNING_ALG_AES_CMAC 1
#define SIGNING_ALG_AES_CMAC_LE cpu_to_le16(1)
#define SIGNING_ALG_AES_GMAC 2
#define SIGNING_ALG_AES_GMAC_LE cpu_to_le16(2)
struct smb2_signing_capabilities {
__le16 ContextType; /* 8 */
__le16 DataLength;
__le32 Reserved;
__le16 SigningAlgorithmCount;
__le16 SigningAlgorithms[];
/* Followed by padding to 8 byte boundary (required by some servers) */
} __packed;
#define POSIX_CTXT_DATA_LEN 16
struct smb2_posix_neg_context {
__le16 ContextType; /* 0x100 */
__le16 DataLength;
__le32 Reserved;
__u8 Name[16]; /* POSIX ctxt GUID 93AD25509CB411E7B42383DE968BCD7C */
} __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[SMB2_CLIENT_GUID_SIZE];
/* In SMB3.02 and earlier next three were MBZ le64 ClientStartTime */
__le32 NegotiateContextOffset; /* SMB3.1.1 only. MBZ earlier */
__le16 NegotiateContextCount; /* SMB3.1.1 only. MBZ earlier */
__le16 Reserved2;
__le16 Dialects[];
} __packed;
struct smb2_negotiate_rsp {
struct smb2_hdr hdr;
__le16 StructureSize; /* Must be 65 */
__le16 SecurityMode;
__le16 DialectRevision;
__le16 NegotiateContextCount; /* Prior to SMB3.1.1 was Reserved & MBZ */
__u8 ServerGUID[16];
__le32 Capabilities;
__le32 MaxTransactSize;
__le32 MaxReadSize;
__le32 MaxWriteSize;
__le64 SystemTime; /* MBZ */
__le64 ServerStartTime;
__le16 SecurityBufferOffset;
__le16 SecurityBufferLength;
__le32 NegotiateContextOffset; /* Pre:SMB3.1.1 was reserved/ignored */
__u8 Buffer[1]; /* variable length GSS security buffer */
} __packed;
/*
* SMB2_SESSION_SETUP See MS-SMB2 section 2.2.5
*/
/* Flags */
#define SMB2_SESSION_REQ_FLAG_BINDING 0x01
#define SMB2_SESSION_REQ_FLAG_ENCRYPT_DATA 0x04
struct smb2_sess_setup_req {
struct smb2_hdr hdr;
__le16 StructureSize; /* Must be 25 */
__u8 Flags;
__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_GUEST_LE cpu_to_le16(0x0001)
#define SMB2_SESSION_FLAG_IS_NULL 0x0002
#define SMB2_SESSION_FLAG_IS_NULL_LE cpu_to_le16(0x0002)
#define SMB2_SESSION_FLAG_ENCRYPT_DATA 0x0004
#define SMB2_SESSION_FLAG_ENCRYPT_DATA_LE cpu_to_le16(0x0004)
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;
/*
* SMB2_LOGOFF See MS-SMB2 section 2.2.7
*/
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;
/*
* SMB2_CLOSE See MS-SMB2 section 2.2.15
*/
/* 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;
/*
* Maximum size of a SMB2_CLOSE response is 64 (smb2 header) + 60 (data)
*/
#define MAX_SMB2_CLOSE_RESPONSE_SIZE 124
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;
/*
* SMB2_READ See MS-SMB2 section 2.2.19
*/
/* For read request Flags field below, following flag is defined for SMB3.02 */
#define SMB2_READFLAG_READ_UNBUFFERED 0x01
#define SMB2_READFLAG_REQUEST_COMPRESSED 0x02 /* See MS-SMB2 2.2.19 */
/* Channel field for read and write: exactly one of following flags can be set*/
#define SMB2_CHANNEL_NONE cpu_to_le32(0x00000000)
#define SMB2_CHANNEL_RDMA_V1 cpu_to_le32(0x00000001)
#define SMB2_CHANNEL_RDMA_V1_INVALIDATE cpu_to_le32(0x00000002)
#define SMB2_CHANNEL_RDMA_TRANSFORM cpu_to_le32(0x00000003)
/* SMB2 read request without RFC1001 length at the beginning */
struct smb2_read_req {
struct smb2_hdr hdr;
__le16 StructureSize; /* Must be 49 */
__u8 Padding; /* offset from start of SMB2 header to place read */
__u8 Flags; /* MBZ unless SMB3.02 or later */
__le32 Length;
__le64 Offset;
__u64 PersistentFileId;
__u64 VolatileFileId;
__le32 MinimumCount;
__le32 Channel; /* MBZ except for SMB3 or later */
__le32 RemainingBytes;
__le16 ReadChannelInfoOffset;
__le16 ReadChannelInfoLength;
__u8 Buffer[1];
} __packed;
/* Read flags */
#define SMB2_READFLAG_RESPONSE_NONE cpu_to_le32(0x00000000)
#define SMB2_READFLAG_RESPONSE_RDMA_TRANSFORM cpu_to_le32(0x00000001)
struct smb2_read_rsp {
struct smb2_hdr hdr;
__le16 StructureSize; /* Must be 17 */
__u8 DataOffset;
__u8 Reserved;
__le32 DataLength;
__le32 DataRemaining;
__le32 Flags;
__u8 Buffer[1];
} __packed;
/*
* SMB2_WRITE See MS-SMB2 section 2.2.21
*/
/* For write request Flags field below the following flags are defined: */
#define SMB2_WRITEFLAG_WRITE_THROUGH 0x00000001 /* SMB2.1 or later */
#define SMB2_WRITEFLAG_WRITE_UNBUFFERED 0x00000002 /* SMB3.02 or later */
struct smb2_write_req {
struct smb2_hdr hdr;
__le16 StructureSize; /* Must be 49 */
__le16 DataOffset; /* offset from start of SMB2 header to write data */
__le32 Length;
__le64 Offset;
__u64 PersistentFileId; /* opaque endianness */
__u64 VolatileFileId; /* opaque endianness */
__le32 Channel; /* MBZ unless SMB3.02 or later */
__le32 RemainingBytes;
__le16 WriteChannelInfoOffset;
__le16 WriteChannelInfoLength;
__le32 Flags;
__u8 Buffer[1];
} __packed;
struct smb2_write_rsp {
struct smb2_hdr hdr;
__le16 StructureSize; /* Must be 17 */
__u8 DataOffset;
__u8 Reserved;
__le32 DataLength;
__le32 DataRemaining;
__u32 Reserved2;
__u8 Buffer[1];
} __packed;
/*
* SMB2_FLUSH See MS-SMB2 section 2.2.17
*/
struct smb2_flush_req {
struct smb2_hdr hdr;
__le16 StructureSize; /* Must be 24 */
__le16 Reserved1;
__le32 Reserved2;
__u64 PersistentFileId;
__u64 VolatileFileId;
} __packed;
struct smb2_flush_rsp {
struct smb2_hdr hdr;
__le16 StructureSize;
__le16 Reserved;
} __packed;
#define SMB2_LOCKFLAG_SHARED 0x0001
#define SMB2_LOCKFLAG_EXCLUSIVE 0x0002
#define SMB2_LOCKFLAG_UNLOCK 0x0004
#define SMB2_LOCKFLAG_FAIL_IMMEDIATELY 0x0010
#define SMB2_LOCKFLAG_MASK 0x0007
struct smb2_lock_element {
__le64 Offset;
__le64 Length;
__le32 Flags;
__le32 Reserved;
} __packed;
struct smb2_lock_req {
struct smb2_hdr hdr;
__le16 StructureSize; /* Must be 48 */
__le16 LockCount;
/*
* The least significant four bits are the index, the other 28 bits are
* the lock sequence number (0 to 64). See MS-SMB2 2.2.26
*/
__le32 LockSequenceNumber;
__u64 PersistentFileId;
__u64 VolatileFileId;
/* Followed by at least one */
struct smb2_lock_element locks[1];
} __packed;
struct smb2_lock_rsp {
struct smb2_hdr hdr;
__le16 StructureSize; /* Must be 4 */
__le16 Reserved;
} __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;
/*
* Valid FileInformation classes for query directory
*
* Note that these are a subset of the (file) QUERY_INFO levels defined
* later in this file (but since QUERY_DIRECTORY uses equivalent numbers
* we do not redefine them here)
*
* FileDirectoryInfomation 0x01
* FileFullDirectoryInformation 0x02
* FileIdFullDirectoryInformation 0x26
* FileBothDirectoryInformation 0x03
* FileIdBothDirectoryInformation 0x25
* FileNamesInformation 0x0C
* FileIdExtdDirectoryInformation 0x3C
*/
/* search (query_directory) Flags field */
#define SMB2_RESTART_SCANS 0x01
#define SMB2_RETURN_SINGLE_ENTRY 0x02
#define SMB2_INDEX_SPECIFIED 0x04
#define SMB2_REOPEN 0x10
struct smb2_query_directory_req {
struct smb2_hdr hdr;
__le16 StructureSize; /* Must be 33 */
__u8 FileInformationClass;
__u8 Flags;
__le32 FileIndex;
__u64 PersistentFileId;
__u64 VolatileFileId;
__le16 FileNameOffset;
__le16 FileNameLength;
__le32 OutputBufferLength;
__u8 Buffer[1];
} __packed;
struct smb2_query_directory_rsp {
struct smb2_hdr hdr;
__le16 StructureSize; /* Must be 9 */
__le16 OutputBufferOffset;
__le32 OutputBufferLength;
__u8 Buffer[1];
} __packed;
/*
* Maximum number of iovs we need for a set-info request.
* The largest one is rename/hardlink
* [0] : struct smb2_set_info_req + smb2_file_[rename|link]_info
* [1] : path
* [2] : compound padding
*/
#define SMB2_SET_INFO_IOV_SIZE 3
struct smb2_set_info_req {
struct smb2_hdr hdr;
__le16 StructureSize; /* Must be 33 */
__u8 InfoType;
__u8 FileInfoClass;
__le32 BufferLength;
__le16 BufferOffset;
__u16 Reserved;
__le32 AdditionalInformation;
__u64 PersistentFileId;
__u64 VolatileFileId;
__u8 Buffer[1];
} __packed;
struct smb2_set_info_rsp {
struct smb2_hdr hdr;
__le16 StructureSize; /* Must be 2 */
} __packed;
/*
* SMB2_NOTIFY See MS-SMB2 section 2.2.35
*/
/* notify flags */
#define SMB2_WATCH_TREE 0x0001
/* notify completion filter flags. See MS-FSCC 2.6 and MS-SMB2 2.2.35 */
#define FILE_NOTIFY_CHANGE_FILE_NAME 0x00000001
#define FILE_NOTIFY_CHANGE_DIR_NAME 0x00000002
#define FILE_NOTIFY_CHANGE_ATTRIBUTES 0x00000004
#define FILE_NOTIFY_CHANGE_SIZE 0x00000008
#define FILE_NOTIFY_CHANGE_LAST_WRITE 0x00000010
#define FILE_NOTIFY_CHANGE_LAST_ACCESS 0x00000020
#define FILE_NOTIFY_CHANGE_CREATION 0x00000040
#define FILE_NOTIFY_CHANGE_EA 0x00000080
#define FILE_NOTIFY_CHANGE_SECURITY 0x00000100
#define FILE_NOTIFY_CHANGE_STREAM_NAME 0x00000200
#define FILE_NOTIFY_CHANGE_STREAM_SIZE 0x00000400
#define FILE_NOTIFY_CHANGE_STREAM_WRITE 0x00000800
/* SMB2 Notify Action Flags */
#define FILE_ACTION_ADDED 0x00000001
#define FILE_ACTION_REMOVED 0x00000002
#define FILE_ACTION_MODIFIED 0x00000003
#define FILE_ACTION_RENAMED_OLD_NAME 0x00000004
#define FILE_ACTION_RENAMED_NEW_NAME 0x00000005
#define FILE_ACTION_ADDED_STREAM 0x00000006
#define FILE_ACTION_REMOVED_STREAM 0x00000007
#define FILE_ACTION_MODIFIED_STREAM 0x00000008
#define FILE_ACTION_REMOVED_BY_DELETE 0x00000009
struct smb2_change_notify_req {
struct smb2_hdr hdr;
__le16 StructureSize;
__le16 Flags;
__le32 OutputBufferLength;
__u64 PersistentFileId; /* opaque endianness */
__u64 VolatileFileId; /* opaque endianness */
__le32 CompletionFilter;
__u32 Reserved;
} __packed;
struct smb2_change_notify_rsp {
struct smb2_hdr hdr;
__le16 StructureSize; /* Must be 9 */
__le16 OutputBufferOffset;
__le32 OutputBufferLength;
__u8 Buffer[1]; /* array of file notify structs */
} __packed;
/*
* SMB2_CREATE See MS-SMB2 section 2.2.13
*/
/* 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
/* Non-spec internal type */
#define SMB2_OPLOCK_LEVEL_NOCHANGE 0x99
/* Impersonation Levels. See MS-WPO section 9.7 and MSDN-IMPERS */
#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)
/* 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
#define FILE_ATTRIBUTE_INTEGRITY_STREAM 0x00008000
#define FILE_ATTRIBUTE_NO_SCRUB_DATA 0x00020000
#define FILE_ATTRIBUTE__MASK 0x00007FB7
#define FILE_ATTRIBUTE_READONLY_LE cpu_to_le32(0x00000001)
#define FILE_ATTRIBUTE_HIDDEN_LE cpu_to_le32(0x00000002)
#define FILE_ATTRIBUTE_SYSTEM_LE cpu_to_le32(0x00000004)
#define FILE_ATTRIBUTE_DIRECTORY_LE cpu_to_le32(0x00000010)
#define FILE_ATTRIBUTE_ARCHIVE_LE cpu_to_le32(0x00000020)
#define FILE_ATTRIBUTE_NORMAL_LE cpu_to_le32(0x00000080)