| /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| /* |
| * Copyright (C) 2018 Samsung Electronics Co., Ltd. |
| */ |
| |
| #ifndef __SMB_COMMON_H__ |
| #define __SMB_COMMON_H__ |
| |
| #include <linux/kernel.h> |
| |
| #include "glob.h" |
| #include "nterr.h" |
| #include "../smbfs_common/smb2pdu.h" |
| #include "smb2pdu.h" |
| |
| /* ksmbd's Specific ERRNO */ |
| #define ESHARE 50000 |
| |
| #define SMB1_PROT 0 |
| #define SMB2_PROT 1 |
| #define SMB21_PROT 2 |
| /* multi-protocol negotiate request */ |
| #define SMB2X_PROT 3 |
| #define SMB30_PROT 4 |
| #define SMB302_PROT 5 |
| #define SMB311_PROT 6 |
| #define BAD_PROT 0xFFFF |
| |
| #define SMB1_VERSION_STRING "1.0" |
| #define SMB20_VERSION_STRING "2.0" |
| #define SMB21_VERSION_STRING "2.1" |
| #define SMB30_VERSION_STRING "3.0" |
| #define SMB302_VERSION_STRING "3.02" |
| #define SMB311_VERSION_STRING "3.1.1" |
| |
| #define SMB_ECHO_INTERVAL (60 * HZ) |
| |
| #define CIFS_DEFAULT_IOSIZE (64 * 1024) |
| #define MAX_CIFS_SMALL_BUFFER_SIZE 448 /* big enough for most */ |
| |
| #define MAX_STREAM_PROT_LEN 0x00FFFFFF |
| |
| /* Responses when opening a file. */ |
| #define F_SUPERSEDED 0 |
| #define F_OPENED 1 |
| #define F_CREATED 2 |
| #define F_OVERWRITTEN 3 |
| |
| /* |
| * File Attribute flags |
| */ |
| #define ATTR_POSIX_SEMANTICS 0x01000000 |
| #define ATTR_BACKUP_SEMANTICS 0x02000000 |
| #define ATTR_DELETE_ON_CLOSE 0x04000000 |
| #define ATTR_SEQUENTIAL_SCAN 0x08000000 |
| #define ATTR_RANDOM_ACCESS 0x10000000 |
| #define ATTR_NO_BUFFERING 0x20000000 |
| #define ATTR_WRITE_THROUGH 0x80000000 |
| |
| /* List of FileSystemAttributes - see 2.5.1 of MS-FSCC */ |
| #define FILE_SUPPORTS_SPARSE_VDL 0x10000000 /* faster nonsparse extend */ |
| #define FILE_SUPPORTS_BLOCK_REFCOUNTING 0x08000000 /* allow ioctl dup extents */ |
| #define FILE_SUPPORT_INTEGRITY_STREAMS 0x04000000 |
| #define FILE_SUPPORTS_USN_JOURNAL 0x02000000 |
| #define FILE_SUPPORTS_OPEN_BY_FILE_ID 0x01000000 |
| #define FILE_SUPPORTS_EXTENDED_ATTRIBUTES 0x00800000 |
| #define FILE_SUPPORTS_HARD_LINKS 0x00400000 |
| #define FILE_SUPPORTS_TRANSACTIONS 0x00200000 |
| #define FILE_SEQUENTIAL_WRITE_ONCE 0x00100000 |
| #define FILE_READ_ONLY_VOLUME 0x00080000 |
| #define FILE_NAMED_STREAMS 0x00040000 |
| #define FILE_SUPPORTS_ENCRYPTION 0x00020000 |
| #define FILE_SUPPORTS_OBJECT_IDS 0x00010000 |
| #define FILE_VOLUME_IS_COMPRESSED 0x00008000 |
| #define FILE_SUPPORTS_REMOTE_STORAGE 0x00000100 |
| #define FILE_SUPPORTS_REPARSE_POINTS 0x00000080 |
| #define FILE_SUPPORTS_SPARSE_FILES 0x00000040 |
| #define FILE_VOLUME_QUOTAS 0x00000020 |
| #define FILE_FILE_COMPRESSION 0x00000010 |
| #define FILE_PERSISTENT_ACLS 0x00000008 |
| #define FILE_UNICODE_ON_DISK 0x00000004 |
| #define FILE_CASE_PRESERVED_NAMES 0x00000002 |
| #define FILE_CASE_SENSITIVE_SEARCH 0x00000001 |
| |
| #define FILE_READ_DATA 0x00000001 /* Data can be read from the file */ |
| #define FILE_WRITE_DATA 0x00000002 /* Data can be written to the file */ |
| #define FILE_APPEND_DATA 0x00000004 /* Data can be appended to the file */ |
| #define FILE_READ_EA 0x00000008 /* Extended attributes associated */ |
| /* with the file can be read */ |
| #define FILE_WRITE_EA 0x00000010 /* Extended attributes associated */ |
| /* with the file can be written */ |
| #define FILE_EXECUTE 0x00000020 /*Data can be read into memory from */ |
| /* the file using system paging I/O */ |
| #define FILE_DELETE_CHILD 0x00000040 |
| #define FILE_READ_ATTRIBUTES 0x00000080 /* Attributes associated with the */ |
| /* file can be read */ |
| #define FILE_WRITE_ATTRIBUTES 0x00000100 /* Attributes associated with the */ |
| /* file can be written */ |
| #define DELETE 0x00010000 /* The file can be deleted */ |
| #define READ_CONTROL 0x00020000 /* The access control list and */ |
| /* ownership associated with the */ |
| /* file can be read */ |
| #define WRITE_DAC 0x00040000 /* The access control list and */ |
| /* ownership associated with the */ |
| /* file can be written. */ |
| #define WRITE_OWNER 0x00080000 /* Ownership information associated */ |
| /* with the file can be written */ |
| #define SYNCHRONIZE 0x00100000 /* The file handle can waited on to */ |
| /* synchronize with the completion */ |
| /* of an input/output request */ |
| #define GENERIC_ALL 0x10000000 |
| #define GENERIC_EXECUTE 0x20000000 |
| #define GENERIC_WRITE 0x40000000 |
| #define GENERIC_READ 0x80000000 |
| /* In summary - Relevant file */ |
| /* access flags from CIFS are */ |
| /* file_read_data, file_write_data */ |
| /* file_execute, file_read_attributes*/ |
| /* write_dac, and delete. */ |
| |
| #define SET_FILE_READ_RIGHTS (FILE_READ_DATA | FILE_READ_EA \ |
| | FILE_READ_ATTRIBUTES \ |
| | DELETE | READ_CONTROL | WRITE_DAC \ |
| | WRITE_OWNER | SYNCHRONIZE) |
| #define SET_FILE_WRITE_RIGHTS (FILE_WRITE_DATA | FILE_APPEND_DATA \ |
| | FILE_WRITE_EA \ |
| | FILE_DELETE_CHILD \ |
| | FILE_WRITE_ATTRIBUTES \ |
| | DELETE | READ_CONTROL | WRITE_DAC \ |
| | WRITE_OWNER | SYNCHRONIZE) |
| #define SET_FILE_EXEC_RIGHTS (FILE_READ_EA | FILE_WRITE_EA | FILE_EXECUTE \ |
| | FILE_READ_ATTRIBUTES \ |
| | FILE_WRITE_ATTRIBUTES \ |
| | DELETE | READ_CONTROL | WRITE_DAC \ |
| | WRITE_OWNER | SYNCHRONIZE) |
| |
| #define SET_MINIMUM_RIGHTS (FILE_READ_EA | FILE_READ_ATTRIBUTES \ |
| | READ_CONTROL | SYNCHRONIZE) |
| |
| /* generic flags for file open */ |
| #define GENERIC_READ_FLAGS (READ_CONTROL | FILE_READ_DATA | \ |
| FILE_READ_ATTRIBUTES | \ |
| FILE_READ_EA | SYNCHRONIZE) |
| |
| #define GENERIC_WRITE_FLAGS (READ_CONTROL | FILE_WRITE_DATA | \ |
| FILE_WRITE_ATTRIBUTES | FILE_WRITE_EA | \ |
| FILE_APPEND_DATA | SYNCHRONIZE) |
| |
| #define GENERIC_EXECUTE_FLAGS (READ_CONTROL | FILE_EXECUTE | \ |
| FILE_READ_ATTRIBUTES | SYNCHRONIZE) |
| |
| #define GENERIC_ALL_FLAGS (DELETE | READ_CONTROL | WRITE_DAC | \ |
| WRITE_OWNER | SYNCHRONIZE | FILE_READ_DATA | \ |
| FILE_WRITE_DATA | FILE_APPEND_DATA | \ |
| FILE_READ_EA | FILE_WRITE_EA | \ |
| FILE_EXECUTE | FILE_DELETE_CHILD | \ |
| FILE_READ_ATTRIBUTES | FILE_WRITE_ATTRIBUTES) |
| |
| #define SMB1_PROTO_NUMBER cpu_to_le32(0x424d53ff) |
| #define SMB_COM_NEGOTIATE 0x72 |
| |
| #define SMB1_CLIENT_GUID_SIZE (16) |
| struct smb_hdr { |
| __be32 smb_buf_length; |
| __u8 Protocol[4]; |
| __u8 Command; |
| union { |
| struct { |
| __u8 ErrorClass; |
| __u8 Reserved; |
| __le16 Error; |
| } __packed DosError; |
| __le32 CifsError; |
| } __packed Status; |
| __u8 Flags; |
| __le16 Flags2; /* note: le */ |
| __le16 PidHigh; |
| union { |
| struct { |
| __le32 SequenceNumber; /* le */ |
| __u32 Reserved; /* zero */ |
| } __packed Sequence; |
| __u8 SecuritySignature[8]; /* le */ |
| } __packed Signature; |
| __u8 pad[2]; |
| __le16 Tid; |
| __le16 Pid; |
| __le16 Uid; |
| __le16 Mid; |
| __u8 WordCount; |
| } __packed; |
| |
| struct smb_negotiate_req { |
| struct smb_hdr hdr; /* wct = 0 */ |
| __le16 ByteCount; |
| unsigned char DialectsArray[1]; |
| } __packed; |
| |
| struct smb_negotiate_rsp { |
| struct smb_hdr hdr; /* wct = 17 */ |
| __le16 DialectIndex; /* 0xFFFF = no dialect acceptable */ |
| __u8 SecurityMode; |
| __le16 MaxMpxCount; |
| __le16 MaxNumberVcs; |
| __le32 MaxBufferSize; |
| __le32 MaxRawSize; |
| __le32 SessionKey; |
| __le32 Capabilities; /* see below */ |
| __le32 SystemTimeLow; |
| __le32 SystemTimeHigh; |
| __le16 ServerTimeZone; |
| __u8 EncryptionKeyLength; |
| __le16 ByteCount; |
| union { |
| unsigned char EncryptionKey[8]; /* cap extended security off */ |
| /* followed by Domain name - if extended security is off */ |
| /* followed by 16 bytes of server GUID */ |
| /* then security blob if cap_extended_security negotiated */ |
| struct { |
| unsigned char GUID[SMB1_CLIENT_GUID_SIZE]; |
| unsigned char SecurityBlob[1]; |
| } __packed extended_response; |
| } __packed u; |
| } __packed; |
| |
| struct filesystem_attribute_info { |
| __le32 Attributes; |
| __le32 MaxPathNameComponentLength; |
| __le32 FileSystemNameLen; |
| __le16 FileSystemName[1]; /* do not have to save this - get subset? */ |
| } __packed; |
| |
| struct filesystem_device_info { |
| __le32 DeviceType; |
| __le32 DeviceCharacteristics; |
| } __packed; /* device info level 0x104 */ |
| |
| struct filesystem_vol_info { |
| __le64 VolumeCreationTime; |
| __le32 SerialNumber; |
| __le32 VolumeLabelSize; |
| __le16 Reserved; |
| __le16 VolumeLabel[1]; |
| } __packed; |
| |
| struct filesystem_info { |
| __le64 TotalAllocationUnits; |
| __le64 FreeAllocationUnits; |
| __le32 SectorsPerAllocationUnit; |
| __le32 BytesPerSector; |
| } __packed; /* size info, level 0x103 */ |
| |
| #define EXTENDED_INFO_MAGIC 0x43667364 /* Cfsd */ |
| #define STRING_LENGTH 28 |
| |
| struct fs_extended_info { |
| __le32 magic; |
| __le32 version; |
| __le32 release; |
| __u64 rel_date; |
| char version_string[STRING_LENGTH]; |
| } __packed; |
| |
| struct object_id_info { |
| char objid[16]; |
| struct fs_extended_info extended_info; |
| } __packed; |
| |
| struct file_directory_info { |
| __le32 NextEntryOffset; |
| __u32 FileIndex; |
| __le64 CreationTime; |
| __le64 LastAccessTime; |
| __le64 LastWriteTime; |
| __le64 ChangeTime; |
| __le64 EndOfFile; |
| __le64 AllocationSize; |
| __le32 ExtFileAttributes; |
| __le32 FileNameLength; |
| char FileName[]; |
| } __packed; /* level 0x101 FF resp data */ |
| |
| struct file_names_info { |
| __le32 NextEntryOffset; |
| __u32 FileIndex; |
| __le32 FileNameLength; |
| char FileName[]; |
| } __packed; /* level 0xc FF resp data */ |
| |
| struct file_full_directory_info { |
| __le32 NextEntryOffset; |
| __u32 FileIndex; |
| __le64 CreationTime; |
| __le64 LastAccessTime; |
| __le64 LastWriteTime; |
| __le64 ChangeTime; |
| __le64 EndOfFile; |
| __le64 AllocationSize; |
| __le32 ExtFileAttributes; |
| __le32 FileNameLength; |
| __le32 EaSize; |
| char FileName[]; |
| } __packed; /* level 0x102 FF resp */ |
| |
| struct file_both_directory_info { |
| __le32 NextEntryOffset; |
| __u32 FileIndex; |
| __le64 CreationTime; |
| __le64 LastAccessTime; |
| __le64 LastWriteTime; |
| __le64 ChangeTime; |
| __le64 EndOfFile; |
| __le64 AllocationSize; |
| __le32 ExtFileAttributes; |
| __le32 FileNameLength; |
| __le32 EaSize; /* length of the xattrs */ |
| __u8 ShortNameLength; |
| __u8 Reserved; |
| __u8 ShortName[24]; |
| char FileName[]; |
| } __packed; /* level 0x104 FFrsp data */ |
| |
| struct file_id_both_directory_info { |
| __le32 NextEntryOffset; |
| __u32 FileIndex; |
| __le64 CreationTime; |
| __le64 LastAccessTime; |
| __le64 LastWriteTime; |
| __le64 ChangeTime; |
| __le64 EndOfFile; |
| __le64 AllocationSize; |
| __le32 ExtFileAttributes; |
| __le32 FileNameLength; |
| __le32 EaSize; /* length of the xattrs */ |
| __u8 ShortNameLength; |
| __u8 Reserved; |
| __u8 ShortName[24]; |
| __le16 Reserved2; |
| __le64 UniqueId; |
| char FileName[]; |
| } __packed; |
| |
| struct file_id_full_dir_info { |
| __le32 NextEntryOffset; |
| __u32 FileIndex; |
| __le64 CreationTime; |
| __le64 LastAccessTime; |
| __le64 LastWriteTime; |
| __le64 ChangeTime; |
| __le64 EndOfFile; |
| __le64 AllocationSize; |
| __le32 ExtFileAttributes; |
| __le32 FileNameLength; |
| __le32 EaSize; /* EA size */ |
| __le32 Reserved; |
| __le64 UniqueId; /* inode num - le since Samba puts ino in low 32 bit*/ |
| char FileName[]; |
| } __packed; /* level 0x105 FF rsp data */ |
| |
| struct smb_version_values { |
| char *version_string; |
| __u16 protocol_id; |
| __le16 lock_cmd; |
| __u32 capabilities; |
| __u32 max_read_size; |
| __u32 max_write_size; |
| __u32 max_trans_size; |
| __u32 max_credits; |
| __u32 large_lock_type; |
| __u32 exclusive_lock_type; |
| __u32 shared_lock_type; |
| __u32 unlock_lock_type; |
| size_t header_size; |
| size_t max_header_size; |
| size_t read_rsp_size; |
| unsigned int cap_unix; |
| unsigned int cap_nt_find; |
| unsigned int cap_large_files; |
| __u16 signing_enabled; |
| __u16 signing_required; |
| size_t create_lease_size; |
| size_t create_durable_size; |
| size_t create_durable_v2_size; |
| size_t create_mxac_size; |
| size_t create_disk_id_size; |
| size_t create_posix_size; |
| }; |
| |
| struct filesystem_posix_info { |
| /* For undefined recommended transfer size return -1 in that field */ |
| __le32 OptimalTransferSize; /* bsize on some os, iosize on other os */ |
| __le32 BlockSize; |
| /* The next three fields are in terms of the block size. |
| * (above). If block size is unknown, 4096 would be a |
| * reasonable block size for a server to report. |
| * Note that returning the blocks/blocksavail removes need |
| * to make a second call (to QFSInfo level 0x103 to get this info. |
| * UserBlockAvail is typically less than or equal to BlocksAvail, |
| * if no distinction is made return the same value in each |
| */ |
| __le64 TotalBlocks; |
| __le64 BlocksAvail; /* bfree */ |
| __le64 UserBlocksAvail; /* bavail */ |
| /* For undefined Node fields or FSID return -1 */ |
| __le64 TotalFileNodes; |
| __le64 FreeFileNodes; |
| __le64 FileSysIdentifier; /* fsid */ |
| /* NB Namelen comes from FILE_SYSTEM_ATTRIBUTE_INFO call */ |
| /* NB flags can come from FILE_SYSTEM_DEVICE_INFO call */ |
| } __packed; |
| |
| struct smb_version_ops { |
| u16 (*get_cmd_val)(struct ksmbd_work *swork); |
| int (*init_rsp_hdr)(struct ksmbd_work *swork); |
| void (*set_rsp_status)(struct ksmbd_work *swork, __le32 err); |
| int (*allocate_rsp_buf)(struct ksmbd_work *work); |
| int (*set_rsp_credits)(struct ksmbd_work *work); |
| int (*check_user_session)(struct ksmbd_work *work); |
| int (*get_ksmbd_tcon)(struct ksmbd_work *work); |
| bool (*is_sign_req)(struct ksmbd_work *work, unsigned int command); |
| int (*check_sign_req)(struct ksmbd_work *work); |
| void (*set_sign_rsp)(struct ksmbd_work *work); |
| int (*generate_signingkey)(struct ksmbd_session *sess, struct ksmbd_conn *conn); |
| int (*generate_encryptionkey)(struct ksmbd_conn *conn, struct ksmbd_session *sess); |
| bool (*is_transform_hdr)(void *buf); |
| int (*decrypt_req)(struct ksmbd_work *work); |
| int (*encrypt_resp)(struct ksmbd_work *work); |
| }; |
| |
| struct smb_version_cmds { |
| int (*proc)(struct ksmbd_work *swork); |
| }; |
| |
| int ksmbd_min_protocol(void); |
| int ksmbd_max_protocol(void); |
| |
| int ksmbd_lookup_protocol_idx(char *str); |
| |
| int ksmbd_verify_smb_message(struct ksmbd_work *work); |
| bool ksmbd_smb_request(struct ksmbd_conn *conn); |
| |
| int ksmbd_lookup_dialect_by_id(__le16 *cli_dialects, __le16 dialects_count); |
| |
| int ksmbd_init_smb_server(struct ksmbd_work *work); |
| |
| struct ksmbd_kstat; |
| int ksmbd_populate_dot_dotdot_entries(struct ksmbd_work *work, |
| int info_level, |
| struct ksmbd_file *dir, |
| struct ksmbd_dir_info *d_info, |
| char *search_pattern, |
| int (*fn)(struct ksmbd_conn *, |
| int, |
| struct ksmbd_dir_info *, |
| struct ksmbd_kstat *)); |
| |
| int ksmbd_extract_shortname(struct ksmbd_conn *conn, |
| const char *longname, |
| char *shortname); |
| |
| int ksmbd_smb_negotiate_common(struct ksmbd_work *work, unsigned int command); |
| |
| int ksmbd_smb_check_shared_mode(struct file *filp, struct ksmbd_file *curr_fp); |
| int ksmbd_override_fsids(struct ksmbd_work *work); |
| void ksmbd_revert_fsids(struct ksmbd_work *work); |
| |
| unsigned int ksmbd_server_side_copy_max_chunk_count(void); |
| unsigned int ksmbd_server_side_copy_max_chunk_size(void); |
| unsigned int ksmbd_server_side_copy_max_total_size(void); |
| bool is_asterisk(char *p); |
| __le32 smb_map_generic_desired_access(__le32 daccess); |
| |
| static inline unsigned int get_rfc1002_len(void *buf) |
| { |
| return be32_to_cpu(*((__be32 *)buf)) & 0xffffff; |
| } |
| |
| static inline void inc_rfc1001_len(void *buf, int count) |
| { |
| be32_add_cpu((__be32 *)buf, count); |
| } |
| #endif /* __SMB_COMMON_H__ */ |