/* 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 */