1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * Copyright (C) 2016 Namjae Jeon <linkinjeon@kernel.org> 4 * Copyright (C) 2018 Samsung Electronics Co., Ltd. 5 */ 6 7 #ifndef _SMB2PDU_H 8 #define _SMB2PDU_H 9 10 #include "ntlmssp.h" 11 #include "smbacl.h" 12 13 /*Create Action Flags*/ 14 #define FILE_SUPERSEDED 0x00000000 15 #define FILE_OPENED 0x00000001 16 #define FILE_CREATED 0x00000002 17 #define FILE_OVERWRITTEN 0x00000003 18 19 /* SMB2 Max Credits */ 20 #define SMB2_MAX_CREDITS 8192 21 22 /* BB FIXME - analyze following length BB */ 23 #define MAX_SMB2_HDR_SIZE 0x78 /* 4 len + 64 hdr + (2*24 wct) + 2 bct + 2 pad */ 24 25 #define SMB21_DEFAULT_IOSIZE (1024 * 1024) 26 #define SMB3_DEFAULT_TRANS_SIZE (1024 * 1024) 27 #define SMB3_MIN_IOSIZE (64 * 1024) 28 #define SMB3_MAX_IOSIZE (8 * 1024 * 1024) 29 #define SMB3_MAX_MSGSIZE (4 * 4096) 30 31 /* 32 * Definitions for SMB2 Protocol Data Units (network frames) 33 * 34 * See MS-SMB2.PDF specification for protocol details. 35 * The Naming convention is the lower case version of the SMB2 36 * command code name for the struct. Note that structures must be packed. 37 * 38 */ 39 40 struct preauth_integrity_info { 41 /* PreAuth integrity Hash ID */ 42 __le16 Preauth_HashId; 43 /* PreAuth integrity Hash Value */ 44 __u8 Preauth_HashValue[SMB2_PREAUTH_HASH_SIZE]; 45 }; 46 47 /* offset is sizeof smb2_negotiate_rsp but rounded up to 8 bytes. */ 48 #ifdef CONFIG_SMB_SERVER_KERBEROS5 49 /* sizeof(struct smb2_negotiate_rsp) = 50 * header(64) + response(64) + GSS_LENGTH(96) + GSS_PADDING(0) 51 */ 52 #define OFFSET_OF_NEG_CONTEXT 0xe0 53 #else 54 /* sizeof(struct smb2_negotiate_rsp) = 55 * header(64) + response(64) + GSS_LENGTH(74) + GSS_PADDING(6) 56 */ 57 #define OFFSET_OF_NEG_CONTEXT 0xd0 58 #endif 59 60 #define SMB2_SESSION_EXPIRED (0) 61 #define SMB2_SESSION_IN_PROGRESS BIT(0) 62 #define SMB2_SESSION_VALID BIT(1) 63 64 #define SMB2_SESSION_TIMEOUT (10 * HZ) 65 66 struct create_durable_req_v2 { 67 struct create_context ccontext; 68 __u8 Name[8]; 69 __le32 Timeout; 70 __le32 Flags; 71 __u8 Reserved[8]; 72 __u8 CreateGuid[16]; 73 } __packed; 74 75 struct create_durable_reconn_v2_req { 76 struct create_context ccontext; 77 __u8 Name[8]; 78 struct { 79 __u64 PersistentFileId; 80 __u64 VolatileFileId; 81 } Fid; 82 __u8 CreateGuid[16]; 83 __le32 Flags; 84 } __packed; 85 86 struct create_alloc_size_req { 87 struct create_context ccontext; 88 __u8 Name[8]; 89 __le64 AllocationSize; 90 } __packed; 91 92 struct create_durable_rsp { 93 struct create_context ccontext; 94 __u8 Name[8]; 95 union { 96 __u8 Reserved[8]; 97 __u64 data; 98 } Data; 99 } __packed; 100 101 struct create_durable_v2_rsp { 102 struct create_context ccontext; 103 __u8 Name[8]; 104 __le32 Timeout; 105 __le32 Flags; 106 } __packed; 107 108 /* equivalent of the contents of SMB3.1.1 POSIX open context response */ 109 struct create_posix_rsp { 110 struct create_context ccontext; 111 __u8 Name[16]; 112 __le32 nlink; 113 __le32 reparse_tag; 114 __le32 mode; 115 /* SidBuffer contain two sids(Domain sid(28), UNIX group sid(16)) */ 116 u8 SidBuffer[44]; 117 } __packed; 118 119 struct smb2_buffer_desc_v1 { 120 __le64 offset; 121 __le32 token; 122 __le32 length; 123 } __packed; 124 125 #define SMB2_0_IOCTL_IS_FSCTL 0x00000001 126 127 struct smb_sockaddr_in { 128 __be16 Port; 129 __be32 IPv4address; 130 __u8 Reserved[8]; 131 } __packed; 132 133 struct smb_sockaddr_in6 { 134 __be16 Port; 135 __be32 FlowInfo; 136 __u8 IPv6address[16]; 137 __be32 ScopeId; 138 } __packed; 139 140 #define INTERNETWORK 0x0002 141 #define INTERNETWORKV6 0x0017 142 143 struct sockaddr_storage_rsp { 144 __le16 Family; 145 union { 146 struct smb_sockaddr_in addr4; 147 struct smb_sockaddr_in6 addr6; 148 }; 149 } __packed; 150 151 #define RSS_CAPABLE 0x00000001 152 #define RDMA_CAPABLE 0x00000002 153 154 struct network_interface_info_ioctl_rsp { 155 __le32 Next; /* next interface. zero if this is last one */ 156 __le32 IfIndex; 157 __le32 Capability; /* RSS or RDMA Capable */ 158 __le32 Reserved; 159 __le64 LinkSpeed; 160 char SockAddr_Storage[128]; 161 } __packed; 162 163 struct file_object_buf_type1_ioctl_rsp { 164 __u8 ObjectId[16]; 165 __u8 BirthVolumeId[16]; 166 __u8 BirthObjectId[16]; 167 __u8 DomainId[16]; 168 } __packed; 169 170 struct resume_key_ioctl_rsp { 171 __u64 ResumeKey[3]; 172 __le32 ContextLength; 173 __u8 Context[4]; /* ignored, Windows sets to 4 bytes of zero */ 174 } __packed; 175 176 struct copychunk_ioctl_req { 177 __le64 ResumeKey[3]; 178 __le32 ChunkCount; 179 __le32 Reserved; 180 __u8 Chunks[1]; /* array of srv_copychunk */ 181 } __packed; 182 183 struct srv_copychunk { 184 __le64 SourceOffset; 185 __le64 TargetOffset; 186 __le32 Length; 187 __le32 Reserved; 188 } __packed; 189 190 struct copychunk_ioctl_rsp { 191 __le32 ChunksWritten; 192 __le32 ChunkBytesWritten; 193 __le32 TotalBytesWritten; 194 } __packed; 195 196 struct file_sparse { 197 __u8 SetSparse; 198 } __packed; 199 200 /* FILE Info response size */ 201 #define FILE_DIRECTORY_INFORMATION_SIZE 1 202 #define FILE_FULL_DIRECTORY_INFORMATION_SIZE 2 203 #define FILE_BOTH_DIRECTORY_INFORMATION_SIZE 3 204 #define FILE_BASIC_INFORMATION_SIZE 40 205 #define FILE_STANDARD_INFORMATION_SIZE 24 206 #define FILE_INTERNAL_INFORMATION_SIZE 8 207 #define FILE_EA_INFORMATION_SIZE 4 208 #define FILE_ACCESS_INFORMATION_SIZE 4 209 #define FILE_NAME_INFORMATION_SIZE 9 210 #define FILE_RENAME_INFORMATION_SIZE 10 211 #define FILE_LINK_INFORMATION_SIZE 11 212 #define FILE_NAMES_INFORMATION_SIZE 12 213 #define FILE_DISPOSITION_INFORMATION_SIZE 13 214 #define FILE_POSITION_INFORMATION_SIZE 14 215 #define FILE_FULL_EA_INFORMATION_SIZE 15 216 #define FILE_MODE_INFORMATION_SIZE 4 217 #define FILE_ALIGNMENT_INFORMATION_SIZE 4 218 #define FILE_ALL_INFORMATION_SIZE 104 219 #define FILE_ALLOCATION_INFORMATION_SIZE 19 220 #define FILE_END_OF_FILE_INFORMATION_SIZE 20 221 #define FILE_ALTERNATE_NAME_INFORMATION_SIZE 8 222 #define FILE_STREAM_INFORMATION_SIZE 32 223 #define FILE_PIPE_INFORMATION_SIZE 23 224 #define FILE_PIPE_LOCAL_INFORMATION_SIZE 24 225 #define FILE_PIPE_REMOTE_INFORMATION_SIZE 25 226 #define FILE_MAILSLOT_QUERY_INFORMATION_SIZE 26 227 #define FILE_MAILSLOT_SET_INFORMATION_SIZE 27 228 #define FILE_COMPRESSION_INFORMATION_SIZE 16 229 #define FILE_OBJECT_ID_INFORMATION_SIZE 29 230 /* Number 30 not defined in documents */ 231 #define FILE_MOVE_CLUSTER_INFORMATION_SIZE 31 232 #define FILE_QUOTA_INFORMATION_SIZE 32 233 #define FILE_REPARSE_POINT_INFORMATION_SIZE 33 234 #define FILE_NETWORK_OPEN_INFORMATION_SIZE 56 235 #define FILE_ATTRIBUTE_TAG_INFORMATION_SIZE 8 236 237 /* FS Info response size */ 238 #define FS_DEVICE_INFORMATION_SIZE 8 239 #define FS_ATTRIBUTE_INFORMATION_SIZE 16 240 #define FS_VOLUME_INFORMATION_SIZE 24 241 #define FS_SIZE_INFORMATION_SIZE 24 242 #define FS_FULL_SIZE_INFORMATION_SIZE 32 243 #define FS_SECTOR_SIZE_INFORMATION_SIZE 28 244 #define FS_OBJECT_ID_INFORMATION_SIZE 64 245 #define FS_CONTROL_INFORMATION_SIZE 48 246 #define FS_POSIX_INFORMATION_SIZE 56 247 248 /* FS_ATTRIBUTE_File_System_Name */ 249 #define FS_TYPE_SUPPORT_SIZE 44 250 struct fs_type_info { 251 char *fs_name; 252 long magic_number; 253 } __packed; 254 255 /* 256 * PDU query infolevel structure definitions 257 * BB consider moving to a different header 258 */ 259 260 struct smb2_file_access_info { 261 __le32 AccessFlags; 262 } __packed; 263 264 struct smb2_file_alignment_info { 265 __le32 AlignmentRequirement; 266 } __packed; 267 268 struct smb2_file_basic_info { /* data block encoding of response to level 18 */ 269 __le64 CreationTime; /* Beginning of FILE_BASIC_INFO equivalent */ 270 __le64 LastAccessTime; 271 __le64 LastWriteTime; 272 __le64 ChangeTime; 273 __le32 Attributes; 274 __u32 Pad1; /* End of FILE_BASIC_INFO_INFO equivalent */ 275 } __packed; 276 277 struct smb2_file_alt_name_info { 278 __le32 FileNameLength; 279 char FileName[]; 280 } __packed; 281 282 struct smb2_file_stream_info { 283 __le32 NextEntryOffset; 284 __le32 StreamNameLength; 285 __le64 StreamSize; 286 __le64 StreamAllocationSize; 287 char StreamName[]; 288 } __packed; 289 290 struct smb2_file_ntwrk_info { 291 __le64 CreationTime; 292 __le64 LastAccessTime; 293 __le64 LastWriteTime; 294 __le64 ChangeTime; 295 __le64 AllocationSize; 296 __le64 EndOfFile; 297 __le32 Attributes; 298 __le32 Reserved; 299 } __packed; 300 301 struct smb2_file_standard_info { 302 __le64 AllocationSize; 303 __le64 EndOfFile; 304 __le32 NumberOfLinks; /* hard links */ 305 __u8 DeletePending; 306 __u8 Directory; 307 __le16 Reserved; 308 } __packed; /* level 18 Query */ 309 310 struct smb2_file_ea_info { 311 __le32 EASize; 312 } __packed; 313 314 struct smb2_file_alloc_info { 315 __le64 AllocationSize; 316 } __packed; 317 318 struct smb2_file_disposition_info { 319 __u8 DeletePending; 320 } __packed; 321 322 struct smb2_file_pos_info { 323 __le64 CurrentByteOffset; 324 } __packed; 325 326 #define FILE_MODE_INFO_MASK cpu_to_le32(0x0000100e) 327 328 struct smb2_file_mode_info { 329 __le32 Mode; 330 } __packed; 331 332 #define COMPRESSION_FORMAT_NONE 0x0000 333 #define COMPRESSION_FORMAT_LZNT1 0x0002 334 335 struct smb2_file_comp_info { 336 __le64 CompressedFileSize; 337 __le16 CompressionFormat; 338 __u8 CompressionUnitShift; 339 __u8 ChunkShift; 340 __u8 ClusterShift; 341 __u8 Reserved[3]; 342 } __packed; 343 344 struct smb2_file_attr_tag_info { 345 __le32 FileAttributes; 346 __le32 ReparseTag; 347 } __packed; 348 349 #define SL_RESTART_SCAN 0x00000001 350 #define SL_RETURN_SINGLE_ENTRY 0x00000002 351 #define SL_INDEX_SPECIFIED 0x00000004 352 353 struct smb2_ea_info_req { 354 __le32 NextEntryOffset; 355 __u8 EaNameLength; 356 char name[1]; 357 } __packed; /* level 15 Query */ 358 359 struct smb2_ea_info { 360 __le32 NextEntryOffset; 361 __u8 Flags; 362 __u8 EaNameLength; 363 __le16 EaValueLength; 364 char name[1]; 365 /* optionally followed by value */ 366 } __packed; /* level 15 Query */ 367 368 struct create_ea_buf_req { 369 struct create_context ccontext; 370 __u8 Name[8]; 371 struct smb2_ea_info ea; 372 } __packed; 373 374 struct create_sd_buf_req { 375 struct create_context ccontext; 376 __u8 Name[8]; 377 struct smb_ntsd ntsd; 378 } __packed; 379 380 struct smb2_posix_info { 381 __le32 NextEntryOffset; 382 __u32 Ignored; 383 __le64 CreationTime; 384 __le64 LastAccessTime; 385 __le64 LastWriteTime; 386 __le64 ChangeTime; 387 __le64 EndOfFile; 388 __le64 AllocationSize; 389 __le32 DosAttributes; 390 __le64 Inode; 391 __le32 DeviceId; 392 __le32 Zero; 393 /* beginning of POSIX Create Context Response */ 394 __le32 HardLinks; 395 __le32 ReparseTag; 396 __le32 Mode; 397 /* SidBuffer contain two sids (UNIX user sid(16), UNIX group sid(16)) */ 398 u8 SidBuffer[32]; 399 __le32 name_len; 400 u8 name[]; 401 /* 402 * var sized owner SID 403 * var sized group SID 404 * le32 filenamelength 405 * u8 filename[] 406 */ 407 } __packed; 408 409 /* functions */ 410 void init_smb2_1_server(struct ksmbd_conn *conn); 411 void init_smb3_0_server(struct ksmbd_conn *conn); 412 void init_smb3_02_server(struct ksmbd_conn *conn); 413 int init_smb3_11_server(struct ksmbd_conn *conn); 414 415 void init_smb2_max_read_size(unsigned int sz); 416 void init_smb2_max_write_size(unsigned int sz); 417 void init_smb2_max_trans_size(unsigned int sz); 418 void init_smb2_max_credits(unsigned int sz); 419 420 bool is_smb2_neg_cmd(struct ksmbd_work *work); 421 bool is_smb2_rsp(struct ksmbd_work *work); 422 423 u16 get_smb2_cmd_val(struct ksmbd_work *work); 424 void set_smb2_rsp_status(struct ksmbd_work *work, __le32 err); 425 int init_smb2_rsp_hdr(struct ksmbd_work *work); 426 int smb2_allocate_rsp_buf(struct ksmbd_work *work); 427 bool is_chained_smb2_message(struct ksmbd_work *work); 428 int init_smb2_neg_rsp(struct ksmbd_work *work); 429 void smb2_set_err_rsp(struct ksmbd_work *work); 430 int smb2_check_user_session(struct ksmbd_work *work); 431 int smb2_get_ksmbd_tcon(struct ksmbd_work *work); 432 bool smb2_is_sign_req(struct ksmbd_work *work, unsigned int command); 433 int smb2_check_sign_req(struct ksmbd_work *work); 434 void smb2_set_sign_rsp(struct ksmbd_work *work); 435 int smb3_check_sign_req(struct ksmbd_work *work); 436 void smb3_set_sign_rsp(struct ksmbd_work *work); 437 int find_matching_smb2_dialect(int start_index, __le16 *cli_dialects, 438 __le16 dialects_count); 439 struct file_lock *smb_flock_init(struct file *f); 440 int setup_async_work(struct ksmbd_work *work, void (*fn)(void **), 441 void **arg); 442 void release_async_work(struct ksmbd_work *work); 443 void smb2_send_interim_resp(struct ksmbd_work *work, __le32 status); 444 struct channel *lookup_chann_list(struct ksmbd_session *sess, 445 struct ksmbd_conn *conn); 446 void smb3_preauth_hash_rsp(struct ksmbd_work *work); 447 bool smb3_is_transform_hdr(void *buf); 448 int smb3_decrypt_req(struct ksmbd_work *work); 449 int smb3_encrypt_resp(struct ksmbd_work *work); 450 bool smb3_11_final_sess_setup_resp(struct ksmbd_work *work); 451 int smb2_set_rsp_credits(struct ksmbd_work *work); 452 bool smb3_encryption_negotiated(struct ksmbd_conn *conn); 453 454 /* smb2 misc functions */ 455 int ksmbd_smb2_check_message(struct ksmbd_work *work); 456 457 /* smb2 command handlers */ 458 int smb2_handle_negotiate(struct ksmbd_work *work); 459 int smb2_negotiate_request(struct ksmbd_work *work); 460 int smb2_sess_setup(struct ksmbd_work *work); 461 int smb2_tree_connect(struct ksmbd_work *work); 462 int smb2_tree_disconnect(struct ksmbd_work *work); 463 int smb2_session_logoff(struct ksmbd_work *work); 464 int smb2_open(struct ksmbd_work *work); 465 int smb2_query_info(struct ksmbd_work *work); 466 int smb2_query_dir(struct ksmbd_work *work); 467 int smb2_close(struct ksmbd_work *work); 468 int smb2_echo(struct ksmbd_work *work); 469 int smb2_set_info(struct ksmbd_work *work); 470 int smb2_read(struct ksmbd_work *work); 471 int smb2_write(struct ksmbd_work *work); 472 int smb2_flush(struct ksmbd_work *work); 473 int smb2_cancel(struct ksmbd_work *work); 474 int smb2_lock(struct ksmbd_work *work); 475 int smb2_ioctl(struct ksmbd_work *work); 476 int smb2_oplock_break(struct ksmbd_work *work); 477 int smb2_notify(struct ksmbd_work *ksmbd_work); 478 479 /* 480 * Get the body of the smb2 message excluding the 4 byte rfc1002 headers 481 * from request/response buffer. 482 */ 483 static inline void *smb2_get_msg(void *buf) 484 { 485 return buf + 4; 486 } 487 488 #endif /* _SMB2PDU_H */ 489