1 /* SPDX-License-Identifier: LGPL-2.1 */ 2 /* 3 * 4 * Copyright (c) International Business Machines Corp., 2009, 2013 5 * Etersoft, 2012 6 * Author(s): Steve French (sfrench@us.ibm.com) 7 * Pavel Shilovsky (pshilovsky@samba.org) 2012 8 * 9 */ 10 11 #ifndef _SMB2PDU_H 12 #define _SMB2PDU_H 13 14 #include <net/sock.h> 15 #include "cifsacl.h" 16 17 /* 52 transform hdr + 64 hdr + 88 create rsp */ 18 #define SMB2_TRANSFORM_HEADER_SIZE 52 19 #define MAX_SMB2_HDR_SIZE 204 20 21 /* The total header size for SMB2 read and write */ 22 #define SMB2_READWRITE_PDU_HEADER_SIZE (48 + sizeof(struct smb2_hdr)) 23 24 /* See MS-SMB2 2.2.43 */ 25 struct smb2_rdma_transform { 26 __le16 RdmaDescriptorOffset; 27 __le16 RdmaDescriptorLength; 28 __le32 Channel; /* for values see channel description in smb2 read above */ 29 __le16 TransformCount; 30 __le16 Reserved1; 31 __le32 Reserved2; 32 } __packed; 33 34 /* TransformType */ 35 #define SMB2_RDMA_TRANSFORM_TYPE_ENCRYPTION 0x0001 36 #define SMB2_RDMA_TRANSFORM_TYPE_SIGNING 0x0002 37 38 struct smb2_rdma_crypto_transform { 39 __le16 TransformType; 40 __le16 SignatureLength; 41 __le16 NonceLength; 42 __u16 Reserved; 43 __u8 Signature[]; /* variable length */ 44 /* u8 Nonce[] */ 45 /* followed by padding */ 46 } __packed; 47 48 /* 49 * Definitions for SMB2 Protocol Data Units (network frames) 50 * 51 * See MS-SMB2.PDF specification for protocol details. 52 * The Naming convention is the lower case version of the SMB2 53 * command code name for the struct. Note that structures must be packed. 54 * 55 */ 56 57 #define COMPOUND_FID 0xFFFFFFFFFFFFFFFFULL 58 59 #define SMB2_SYMLINK_STRUCT_SIZE \ 60 (sizeof(struct smb2_err_rsp) + sizeof(struct smb2_symlink_err_rsp)) 61 62 #define SYMLINK_ERROR_TAG 0x4c4d5953 63 64 struct smb2_symlink_err_rsp { 65 __le32 SymLinkLength; 66 __le32 SymLinkErrorTag; 67 __le32 ReparseTag; 68 __le16 ReparseDataLength; 69 __le16 UnparsedPathLength; 70 __le16 SubstituteNameOffset; 71 __le16 SubstituteNameLength; 72 __le16 PrintNameOffset; 73 __le16 PrintNameLength; 74 __le32 Flags; 75 __u8 PathBuffer[]; 76 } __packed; 77 78 /* SMB 3.1.1 and later dialects. See MS-SMB2 section 2.2.2.1 */ 79 struct smb2_error_context_rsp { 80 __le32 ErrorDataLength; 81 __le32 ErrorId; 82 __u8 ErrorContextData; /* ErrorDataLength long array */ 83 } __packed; 84 85 /* ErrorId values */ 86 #define SMB2_ERROR_ID_DEFAULT 0x00000000 87 #define SMB2_ERROR_ID_SHARE_REDIRECT cpu_to_le32(0x72645253) /* "rdRS" */ 88 89 /* Defines for Type field below (see MS-SMB2 2.2.2.2.2.1) */ 90 #define MOVE_DST_IPADDR_V4 cpu_to_le32(0x00000001) 91 #define MOVE_DST_IPADDR_V6 cpu_to_le32(0x00000002) 92 93 struct move_dst_ipaddr { 94 __le32 Type; 95 __u32 Reserved; 96 __u8 address[16]; /* IPv4 followed by 12 bytes rsvd or IPv6 address */ 97 } __packed; 98 99 struct share_redirect_error_context_rsp { 100 __le32 StructureSize; 101 __le32 NotificationType; 102 __le32 ResourceNameOffset; 103 __le32 ResourceNameLength; 104 __le16 Reserved; 105 __le16 TargetType; 106 __le32 IPAddrCount; 107 struct move_dst_ipaddr IpAddrMoveList[]; 108 /* __u8 ResourceName[] */ /* Name of share as counted Unicode string */ 109 } __packed; 110 111 /* 112 * Maximum number of iovs we need for an open/create request. 113 * [0] : struct smb2_create_req 114 * [1] : path 115 * [2] : lease context 116 * [3] : durable context 117 * [4] : posix context 118 * [5] : time warp context 119 * [6] : query id context 120 * [7] : compound padding 121 */ 122 #define SMB2_CREATE_IOV_SIZE 8 123 124 /* 125 * Maximum size of a SMB2_CREATE response is 64 (smb2 header) + 126 * 88 (fixed part of create response) + 520 (path) + 208 (contexts) + 127 * 2 bytes of padding. 128 */ 129 #define MAX_SMB2_CREATE_RESPONSE_SIZE 880 130 131 #define SMB2_LEASE_READ_CACHING_HE 0x01 132 #define SMB2_LEASE_HANDLE_CACHING_HE 0x02 133 #define SMB2_LEASE_WRITE_CACHING_HE 0x04 134 135 136 /* See MS-SMB2 2.2.13.2.11 */ 137 /* Flags */ 138 #define SMB2_DHANDLE_FLAG_PERSISTENT 0x00000002 139 struct durable_context_v2 { 140 __le32 Timeout; 141 __le32 Flags; 142 __u64 Reserved; 143 __u8 CreateGuid[16]; 144 } __packed; 145 146 struct create_durable_v2 { 147 struct create_context ccontext; 148 __u8 Name[8]; 149 struct durable_context_v2 dcontext; 150 } __packed; 151 152 /* See MS-SMB2 2.2.13.2.12 */ 153 struct durable_reconnect_context_v2 { 154 struct { 155 __u64 PersistentFileId; 156 __u64 VolatileFileId; 157 } Fid; 158 __u8 CreateGuid[16]; 159 __le32 Flags; /* see above DHANDLE_FLAG_PERSISTENT */ 160 } __packed; 161 162 /* See MS-SMB2 2.2.14.2.12 */ 163 struct durable_reconnect_context_v2_rsp { 164 __le32 Timeout; 165 __le32 Flags; /* see above DHANDLE_FLAG_PERSISTENT */ 166 } __packed; 167 168 struct create_durable_handle_reconnect_v2 { 169 struct create_context ccontext; 170 __u8 Name[8]; 171 struct durable_reconnect_context_v2 dcontext; 172 __u8 Pad[4]; 173 } __packed; 174 175 /* See MS-SMB2 2.2.13.2.5 */ 176 struct crt_twarp_ctxt { 177 struct create_context ccontext; 178 __u8 Name[8]; 179 __le64 Timestamp; 180 181 } __packed; 182 183 /* See MS-SMB2 2.2.13.2.9 */ 184 struct crt_query_id_ctxt { 185 struct create_context ccontext; 186 __u8 Name[8]; 187 } __packed; 188 189 struct crt_sd_ctxt { 190 struct create_context ccontext; 191 __u8 Name[8]; 192 struct smb3_sd sd; 193 } __packed; 194 195 196 #define COPY_CHUNK_RES_KEY_SIZE 24 197 struct resume_key_req { 198 char ResumeKey[COPY_CHUNK_RES_KEY_SIZE]; 199 __le32 ContextLength; /* MBZ */ 200 char Context[]; /* ignored, Windows sets to 4 bytes of zero */ 201 } __packed; 202 203 /* this goes in the ioctl buffer when doing a copychunk request */ 204 struct copychunk_ioctl { 205 char SourceKey[COPY_CHUNK_RES_KEY_SIZE]; 206 __le32 ChunkCount; /* we are only sending 1 */ 207 __le32 Reserved; 208 /* array will only be one chunk long for us */ 209 __le64 SourceOffset; 210 __le64 TargetOffset; 211 __le32 Length; /* how many bytes to copy */ 212 __u32 Reserved2; 213 } __packed; 214 215 struct copychunk_ioctl_rsp { 216 __le32 ChunksWritten; 217 __le32 ChunkBytesWritten; 218 __le32 TotalBytesWritten; 219 } __packed; 220 221 /* See MS-FSCC 2.3.29 and 2.3.30 */ 222 struct get_retrieval_pointer_count_req { 223 __le64 StartingVcn; /* virtual cluster number (signed) */ 224 } __packed; 225 226 struct get_retrieval_pointer_count_rsp { 227 __le32 ExtentCount; 228 } __packed; 229 230 /* 231 * See MS-FSCC 2.3.33 and 2.3.34 232 * request is the same as get_retrieval_point_count_req struct above 233 */ 234 struct smb3_extents { 235 __le64 NextVcn; 236 __le64 Lcn; /* logical cluster number */ 237 } __packed; 238 239 struct get_retrieval_pointers_refcount_rsp { 240 __le32 ExtentCount; 241 __u32 Reserved; 242 __le64 StartingVcn; 243 struct smb3_extents extents[]; 244 } __packed; 245 246 /* See MS-DFSC 2.2.2 */ 247 struct fsctl_get_dfs_referral_req { 248 __le16 MaxReferralLevel; 249 __u8 RequestFileName[]; 250 } __packed; 251 252 /* DFS response is struct get_dfs_refer_rsp */ 253 254 /* See MS-SMB2 2.2.31.3 */ 255 struct network_resiliency_req { 256 __le32 Timeout; 257 __le32 Reserved; 258 } __packed; 259 /* There is no buffer for the response ie no struct network_resiliency_rsp */ 260 261 #define RSS_CAPABLE cpu_to_le32(0x00000001) 262 #define RDMA_CAPABLE cpu_to_le32(0x00000002) 263 264 #define INTERNETWORK cpu_to_le16(0x0002) 265 #define INTERNETWORKV6 cpu_to_le16(0x0017) 266 267 struct network_interface_info_ioctl_rsp { 268 __le32 Next; /* next interface. zero if this is last one */ 269 __le32 IfIndex; 270 __le32 Capability; /* RSS or RDMA Capable */ 271 __le32 Reserved; 272 __le64 LinkSpeed; 273 __le16 Family; 274 __u8 Buffer[126]; 275 } __packed; 276 277 struct iface_info_ipv4 { 278 __be16 Port; 279 __be32 IPv4Address; 280 __be64 Reserved; 281 } __packed; 282 283 struct iface_info_ipv6 { 284 __be16 Port; 285 __be32 FlowInfo; 286 __u8 IPv6Address[16]; 287 __be32 ScopeId; 288 } __packed; 289 290 #define NO_FILE_ID 0xFFFFFFFFFFFFFFFFULL /* general ioctls to srv not to file */ 291 292 struct compress_ioctl { 293 __le16 CompressionState; /* See cifspdu.h for possible flag values */ 294 } __packed; 295 296 /* 297 * Maximum number of iovs we need for an ioctl request. 298 * [0] : struct smb2_ioctl_req 299 * [1] : in_data 300 */ 301 #define SMB2_IOCTL_IOV_SIZE 2 302 303 /* 304 * PDU query infolevel structure definitions 305 * BB consider moving to a different header 306 */ 307 308 struct smb2_file_full_ea_info { /* encoding of response for level 15 */ 309 __le32 next_entry_offset; 310 __u8 flags; 311 __u8 ea_name_length; 312 __le16 ea_value_length; 313 char ea_data[]; /* \0 terminated name plus value */ 314 } __packed; /* level 15 Set */ 315 316 struct smb2_file_reparse_point_info { 317 __le64 IndexNumber; 318 __le32 Tag; 319 } __packed; 320 321 struct smb2_file_network_open_info { 322 __le64 CreationTime; 323 __le64 LastAccessTime; 324 __le64 LastWriteTime; 325 __le64 ChangeTime; 326 __le64 AllocationSize; 327 __le64 EndOfFile; 328 __le32 Attributes; 329 __le32 Reserved; 330 } __packed; /* level 34 Query also similar returned in close rsp and open rsp */ 331 332 /* See MS-FSCC 2.4.21 */ 333 struct smb2_file_id_information { 334 __le64 VolumeSerialNumber; 335 __u64 PersistentFileId; /* opaque endianness */ 336 __u64 VolatileFileId; /* opaque endianness */ 337 } __packed; /* level 59 */ 338 339 /* See MS-FSCC 2.4.18 */ 340 struct smb2_file_id_extd_directory_info { 341 __le32 NextEntryOffset; 342 __u32 FileIndex; 343 __le64 CreationTime; 344 __le64 LastAccessTime; 345 __le64 LastWriteTime; 346 __le64 ChangeTime; 347 __le64 EndOfFile; 348 __le64 AllocationSize; 349 __le32 FileAttributes; 350 __le32 FileNameLength; 351 __le32 EaSize; /* EA size */ 352 __le32 ReparsePointTag; /* valid if FILE_ATTR_REPARSE_POINT set in FileAttributes */ 353 __le64 UniqueId; /* inode num - le since Samba puts ino in low 32 bit */ 354 char FileName[]; 355 } __packed; /* level 60 */ 356 357 extern char smb2_padding[7]; 358 359 /* equivalent of the contents of SMB3.1.1 POSIX open context response */ 360 struct create_posix_rsp { 361 u32 nlink; 362 u32 reparse_tag; 363 u32 mode; 364 struct cifs_sid owner; /* var-sized on the wire */ 365 struct cifs_sid group; /* var-sized on the wire */ 366 } __packed; 367 368 #define SMB2_QUERY_DIRECTORY_IOV_SIZE 2 369 370 /* 371 * SMB2-only POSIX info level for query dir 372 * 373 * See posix_info_sid_size(), posix_info_extra_size() and 374 * posix_info_parse() to help with the handling of this struct. 375 */ 376 struct smb2_posix_info { 377 __le32 NextEntryOffset; 378 __u32 Ignored; 379 __le64 CreationTime; 380 __le64 LastAccessTime; 381 __le64 LastWriteTime; 382 __le64 ChangeTime; 383 __le64 EndOfFile; 384 __le64 AllocationSize; 385 __le32 DosAttributes; 386 __le64 Inode; 387 __le32 DeviceId; 388 __le32 Zero; 389 /* beginning of POSIX Create Context Response */ 390 __le32 HardLinks; 391 __le32 ReparseTag; 392 __le32 Mode; 393 /* 394 * var sized owner SID 395 * var sized group SID 396 * le32 filenamelength 397 * u8 filename[] 398 */ 399 } __packed; 400 401 /* 402 * Parsed version of the above struct. Allows direct access to the 403 * variable length fields 404 */ 405 struct smb2_posix_info_parsed { 406 const struct smb2_posix_info *base; 407 size_t size; 408 struct cifs_sid owner; 409 struct cifs_sid group; 410 int name_len; 411 const u8 *name; 412 }; 413 414 #endif /* _SMB2PDU_H */ 415
