| /* |
| * 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) |
| |
| #define SMB2_HEADER_SIZE __constant_le16_to_cpu(64) |
| |
| #define SMB2_ERROR_STRUCTURE_SIZE2 __constant_le16_to_cpu(9) |
| |
| /* |
| * SMB2 Header Definition |
| * |
| * "MBZ" : Must be Zero |
| * "BB" : BugBug, Something to check/review/analyze later |
| * "PDU" : "Protocol Data Unit" (ie a network "frame") |
| * |
| */ |
| 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. |
| * |
| */ |
| 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 */ |
| |
| 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; |
| |
| #endif /* _SMB2PDU_H */ |
