diff options
Diffstat (limited to 'fs/smb/common/smb2pdu.h')
| -rw-r--r-- | fs/smb/common/smb2pdu.h | 189 |
1 files changed, 134 insertions, 55 deletions
diff --git a/fs/smb/common/smb2pdu.h b/fs/smb/common/smb2pdu.h index 57f2343164a3..c7a0efda4403 100644 --- a/fs/smb/common/smb2pdu.h +++ b/fs/smb/common/smb2pdu.h @@ -6,7 +6,7 @@ * 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. + * able to match against the protocol specification. * * SMB2 commands * Some commands have minimal (wct=0,bcc=0), or uninteresting, responses @@ -208,38 +208,45 @@ struct smb2_transform_hdr { __le64 SessionId; } __packed; +/* + * These are simplified versions from the spec, as we don't need a fully fledged + * form of both unchained and chained structs. + * + * Moreover, even in chained compressed payloads, the initial compression header + * has the form of the unchained one -- i.e. it never has the + * OriginalPayloadSize field and ::Offset field always represent an offset + * (instead of a length, as it is in the chained header). + * + * See MS-SMB2 2.2.42 for more details. + */ +#define SMB2_COMPRESSION_FLAG_NONE 0x0000 +#define SMB2_COMPRESSION_FLAG_CHAINED 0x0001 -/* See MS-SMB2 2.2.42 */ -struct smb2_compression_transform_hdr_unchained { - __le32 ProtocolId; /* 0xFC 'S' 'M' 'B' */ +struct smb2_compression_hdr { + __le32 ProtocolId; /* 0xFC 'S' 'M' 'B' */ __le32 OriginalCompressedSegmentSize; __le16 CompressionAlgorithm; __le16 Flags; - __le16 Length; /* if chained it is length, else offset */ + __le32 Offset; /* this is the size of the uncompressed SMB2 header below */ + /* uncompressed SMB2 header (READ or WRITE) goes here */ + /* compressed data goes here */ } __packed; -/* See MS-SMB2 2.2.42.1 */ -#define SMB2_COMPRESSION_FLAG_NONE 0x0000 -#define SMB2_COMPRESSION_FLAG_CHAINED 0x0001 - -struct compression_payload_header { +/* + * ... OTOH, set compression payload header to always have OriginalPayloadSize + * as it's easier to pass the struct size minus sizeof(OriginalPayloadSize) + * than to juggle around the header/data memory. + */ +struct smb2_compression_payload_hdr { __le16 CompressionAlgorithm; __le16 Flags; __le32 Length; /* length of compressed playload including field below if present */ - /* __le32 OriginalPayloadSize; */ /* optional, present when LZNT1, LZ77, LZ77+Huffman */ + __le32 OriginalPayloadSize; /* accounted 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; +struct smb2_compression_pattern_v1 { + __u8 Pattern; + __u8 Reserved1; __le16 Reserved2; __le32 Repetitions; } __packed; @@ -273,15 +280,16 @@ struct smb3_blob_data { #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 { - +/* struct sid_attr_data is SidData array in BlobData format then le32 Attr */ +struct sid_attr_data { + __le16 BlobSize; + __u8 BlobData[]; + /* __le32 Attr */ } __packed; /* @@ -483,7 +491,7 @@ struct smb2_encryption_neg_context { __le16 ContextType; /* 2 */ __le16 DataLength; __le32 Reserved; - /* CipherCount usally 2, but can be 3 when AES256-GCM enabled */ + /* CipherCount usually 2, but can be 3 when AES256-GCM enabled */ __le16 CipherCount; /* AES128-GCM and AES128-CCM by default */ __le16 Ciphers[]; } __packed; @@ -495,6 +503,7 @@ struct smb2_encryption_neg_context { #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 */ +#define SMB3_COMPRESS_LZ4 cpu_to_le16(0x0005) /* Compression Flags */ #define SMB2_COMPRESSION_CAPABILITIES_FLAG_NONE cpu_to_le32(0x00000000) @@ -702,7 +711,7 @@ struct smb2_close_rsp { __le16 StructureSize; /* 60 */ __le16 Flags; __le32 Reserved; - struct_group(network_open_info, + struct_group_attr(network_open_info, __packed, __le64 CreationTime; __le64 LastAccessTime; __le64 LastWriteTime; @@ -908,6 +917,40 @@ struct smb2_query_directory_rsp { __u8 Buffer[]; } __packed; +/* DeviceType Flags */ +#define FILE_DEVICE_CD_ROM 0x00000002 +#define FILE_DEVICE_CD_ROM_FILE_SYSTEM 0x00000003 +#define FILE_DEVICE_DFS 0x00000006 +#define FILE_DEVICE_DISK 0x00000007 +#define FILE_DEVICE_DISK_FILE_SYSTEM 0x00000008 +#define FILE_DEVICE_FILE_SYSTEM 0x00000009 +#define FILE_DEVICE_NAMED_PIPE 0x00000011 +#define FILE_DEVICE_NETWORK 0x00000012 +#define FILE_DEVICE_NETWORK_FILE_SYSTEM 0x00000014 +#define FILE_DEVICE_NULL 0x00000015 +#define FILE_DEVICE_PARALLEL_PORT 0x00000016 +#define FILE_DEVICE_PRINTER 0x00000018 +#define FILE_DEVICE_SERIAL_PORT 0x0000001b +#define FILE_DEVICE_STREAMS 0x0000001e +#define FILE_DEVICE_TAPE 0x0000001f +#define FILE_DEVICE_TAPE_FILE_SYSTEM 0x00000020 +#define FILE_DEVICE_VIRTUAL_DISK 0x00000024 +#define FILE_DEVICE_NETWORK_REDIRECTOR 0x00000028 + +/* Device Characteristics */ +#define FILE_REMOVABLE_MEDIA 0x00000001 +#define FILE_READ_ONLY_DEVICE 0x00000002 +#define FILE_FLOPPY_DISKETTE 0x00000004 +#define FILE_WRITE_ONCE_MEDIA 0x00000008 +#define FILE_REMOTE_DEVICE 0x00000010 +#define FILE_DEVICE_IS_MOUNTED 0x00000020 +#define FILE_VIRTUAL_VOLUME 0x00000040 +#define FILE_DEVICE_SECURE_OPEN 0x00000100 +#define FILE_CHARACTERISTIC_TS_DEVICE 0x00001000 +#define FILE_CHARACTERISTIC_WEBDAV_DEVICE 0x00002000 +#define FILE_PORTABLE_DEVICE 0x00004000 +#define FILE_DEVICE_ALLOW_APPCONTAINER_TRAVERSAL 0x00020000 + /* * Maximum number of iovs we need for a set-info request. * The largest one is rename/hardlink @@ -1018,7 +1061,7 @@ struct smb2_server_client_notification { #define IL_IMPERSONATION cpu_to_le32(0x00000002) #define IL_DELEGATE cpu_to_le32(0x00000003) -/* File Attrubutes */ +/* File Attributes */ #define FILE_ATTRIBUTE_READONLY 0x00000001 #define FILE_ATTRIBUTE_HIDDEN 0x00000002 #define FILE_ATTRIBUTE_SYSTEM 0x00000004 @@ -1162,14 +1205,19 @@ struct smb2_server_client_notification { #define SMB2_CREATE_FLAG_REPARSEPOINT 0x01 struct create_context { - __le32 Next; - __le16 NameOffset; - __le16 NameLength; - __le16 Reserved; - __le16 DataOffset; - __le32 DataLength; + /* New members must be added within the struct_group() macro below. */ + __struct_group(create_context_hdr, hdr, __packed, + __le32 Next; + __le16 NameOffset; + __le16 NameLength; + __le16 Reserved; + __le16 DataOffset; + __le32 DataLength; + ); __u8 Buffer[]; } __packed; +static_assert(offsetof(struct create_context, Buffer) == sizeof(struct create_context_hdr), + "struct member likely outside of __struct_group()"); struct smb2_create_req { struct smb2_hdr hdr; @@ -1213,7 +1261,7 @@ struct smb2_create_rsp { } __packed; struct create_posix { - struct create_context ccontext; + struct create_context_hdr ccontext; __u8 Name[16]; __le32 Mode; __u32 Reserved; @@ -1221,7 +1269,7 @@ struct create_posix { /* See MS-SMB2 2.2.13.2.3 and MS-SMB2 2.2.13.2.4 */ struct create_durable { - struct create_context ccontext; + struct create_context_hdr ccontext; __u8 Name[8]; union { __u8 Reserved[16]; @@ -1234,14 +1282,14 @@ struct create_durable { /* See MS-SMB2 2.2.13.2.5 */ struct create_mxac_req { - struct create_context ccontext; + struct create_context_hdr ccontext; __u8 Name[8]; __le64 Timestamp; } __packed; /* See MS-SMB2 2.2.14.2.5 */ struct create_mxac_rsp { - struct create_context ccontext; + struct create_context_hdr ccontext; __u8 Name[8]; __le32 QueryStatus; __le32 MaximalAccess; @@ -1277,13 +1325,13 @@ struct lease_context_v2 { } __packed; struct create_lease { - struct create_context ccontext; + struct create_context_hdr ccontext; __u8 Name[8]; struct lease_context lcontext; } __packed; struct create_lease_v2 { - struct create_context ccontext; + struct create_context_hdr ccontext; __u8 Name[8]; struct lease_context_v2 lcontext; __u8 Pad[4]; @@ -1291,7 +1339,7 @@ struct create_lease_v2 { /* See MS-SMB2 2.2.14.2.9 */ struct create_disk_id_rsp { - struct create_context ccontext; + struct create_context_hdr ccontext; __u8 Name[8]; __le64 DiskFileId; __le64 VolumeId; @@ -1300,7 +1348,7 @@ struct create_disk_id_rsp { /* See MS-SMB2 2.2.13.2.13 */ struct create_app_inst_id { - struct create_context ccontext; + struct create_context_hdr ccontext; __u8 Name[16]; __le32 StructureSize; /* Must be 20 */ __u16 Reserved; @@ -1309,7 +1357,7 @@ struct create_app_inst_id { /* See MS-SMB2 2.2.13.2.15 */ struct create_app_inst_id_vers { - struct create_context ccontext; + struct create_context_hdr ccontext; __u8 Name[16]; __le32 StructureSize; /* Must be 24 */ __u16 Reserved; @@ -1502,7 +1550,28 @@ struct reparse_symlink_data_buffer { __u8 PathBuffer[]; /* Variable Length */ } __packed; -/* See MS-FSCC 2.1.2.6 and cifspdu.h for struct reparse_posix_data */ +/* For IO_REPARSE_TAG_NFS - see MS-FSCC 2.1.2.6 */ +#define NFS_SPECFILE_LNK 0x00000000014B4E4C +#define NFS_SPECFILE_CHR 0x0000000000524843 +#define NFS_SPECFILE_BLK 0x00000000004B4C42 +#define NFS_SPECFILE_FIFO 0x000000004F464946 +#define NFS_SPECFILE_SOCK 0x000000004B434F53 +struct reparse_nfs_data_buffer { + __le32 ReparseTag; + __le16 ReparseDataLength; + __u16 Reserved; + __le64 InodeType; /* NFS_SPECFILE_* */ + __u8 DataBuffer[]; +} __packed; + +/* For IO_REPARSE_TAG_LX_SYMLINK */ +struct reparse_wsl_symlink_data_buffer { + __le32 ReparseTag; + __le16 ReparseDataLength; + __u16 Reserved; + __le32 Flags; + __u8 PathBuffer[]; /* Variable Length UTF-8 string without nul-term */ +} __packed; struct validate_negotiate_info_req { __le32 Capabilities; @@ -1638,23 +1707,33 @@ struct smb2_file_internal_info { } __packed; /* level 6 Query */ struct smb2_file_rename_info { /* encoding of request for level 10 */ - __u8 ReplaceIfExists; /* 1 = replace existing target with new */ - /* 0 = fail if target already exists */ - __u8 Reserved[7]; - __u64 RootDirectory; /* MBZ for network operations (why says spec?) */ - __le32 FileNameLength; + /* New members MUST be added within the struct_group() macro below. */ + __struct_group(smb2_file_rename_info_hdr, __hdr, __packed, + __u8 ReplaceIfExists; /* 1 = replace existing target with new */ + /* 0 = fail if target already exists */ + __u8 Reserved[7]; + __u64 RootDirectory; /* MBZ for network operations (why says spec?) */ + __le32 FileNameLength; + ); char FileName[]; /* New name to be assigned */ /* padding - overall struct size must be >= 24 so filename + pad >= 6 */ } __packed; /* level 10 Set */ +static_assert(offsetof(struct smb2_file_rename_info, FileName) == sizeof(struct smb2_file_rename_info_hdr), + "struct member likely outside of __struct_group()"); struct smb2_file_link_info { /* encoding of request for level 11 */ - __u8 ReplaceIfExists; /* 1 = replace existing link with new */ - /* 0 = fail if link already exists */ - __u8 Reserved[7]; - __u64 RootDirectory; /* MBZ for network operations (why says spec?) */ - __le32 FileNameLength; + /* New members MUST be added within the struct_group() macro below. */ + __struct_group(smb2_file_link_info_hdr, __hdr, __packed, + __u8 ReplaceIfExists; /* 1 = replace existing link with new */ + /* 0 = fail if link already exists */ + __u8 Reserved[7]; + __u64 RootDirectory; /* MBZ for network operations (why says spec?) */ + __le32 FileNameLength; + ); char FileName[]; /* Name to be assigned to new link */ } __packed; /* level 11 Set */ +static_assert(offsetof(struct smb2_file_link_info, FileName) == sizeof(struct smb2_file_link_info_hdr), + "struct member likely outside of __struct_group()"); /* * This level 18, although with struct with same name is different from cifs |