xref: /linux/fs/smb/common/smb2pdu.h (revision 9717d5343849beb4ccf96df7bbf347660fd8898d)
1 /* SPDX-License-Identifier: LGPL-2.1 */
2 #ifndef _COMMON_SMB2PDU_H
3 #define _COMMON_SMB2PDU_H
4 
5 /*
6  * Note that, due to trying to use names similar to the protocol specifications,
7  * there are many mixed case field names in the structures below.  Although
8  * this does not match typical Linux kernel style, it is necessary to be
9  * able to match against the protocol specification.
10  *
11  * SMB2 commands
12  * Some commands have minimal (wct=0,bcc=0), or uninteresting, responses
13  * (ie no useful data other than the SMB error code itself) and are marked such.
14  * Knowing this helps avoid response buffer allocations and copy in some cases.
15  */
16 
17 /* List of commands in host endian */
18 #define SMB2_NEGOTIATE_HE	0x0000
19 #define SMB2_SESSION_SETUP_HE	0x0001
20 #define SMB2_LOGOFF_HE		0x0002 /* trivial request/resp */
21 #define SMB2_TREE_CONNECT_HE	0x0003
22 #define SMB2_TREE_DISCONNECT_HE	0x0004 /* trivial req/resp */
23 #define SMB2_CREATE_HE		0x0005
24 #define SMB2_CLOSE_HE		0x0006
25 #define SMB2_FLUSH_HE		0x0007 /* trivial resp */
26 #define SMB2_READ_HE		0x0008
27 #define SMB2_WRITE_HE		0x0009
28 #define SMB2_LOCK_HE		0x000A
29 #define SMB2_IOCTL_HE		0x000B
30 #define SMB2_CANCEL_HE		0x000C
31 #define SMB2_ECHO_HE		0x000D
32 #define SMB2_QUERY_DIRECTORY_HE	0x000E
33 #define SMB2_CHANGE_NOTIFY_HE	0x000F
34 #define SMB2_QUERY_INFO_HE	0x0010
35 #define SMB2_SET_INFO_HE	0x0011
36 #define SMB2_OPLOCK_BREAK_HE	0x0012
37 #define SMB2_SERVER_TO_CLIENT_NOTIFICATION 0x0013
38 
39 /* The same list in little endian */
40 #define SMB2_NEGOTIATE		cpu_to_le16(SMB2_NEGOTIATE_HE)
41 #define SMB2_SESSION_SETUP	cpu_to_le16(SMB2_SESSION_SETUP_HE)
42 #define SMB2_LOGOFF		cpu_to_le16(SMB2_LOGOFF_HE)
43 #define SMB2_TREE_CONNECT	cpu_to_le16(SMB2_TREE_CONNECT_HE)
44 #define SMB2_TREE_DISCONNECT	cpu_to_le16(SMB2_TREE_DISCONNECT_HE)
45 #define SMB2_CREATE		cpu_to_le16(SMB2_CREATE_HE)
46 #define SMB2_CLOSE		cpu_to_le16(SMB2_CLOSE_HE)
47 #define SMB2_FLUSH		cpu_to_le16(SMB2_FLUSH_HE)
48 #define SMB2_READ		cpu_to_le16(SMB2_READ_HE)
49 #define SMB2_WRITE		cpu_to_le16(SMB2_WRITE_HE)
50 #define SMB2_LOCK		cpu_to_le16(SMB2_LOCK_HE)
51 #define SMB2_IOCTL		cpu_to_le16(SMB2_IOCTL_HE)
52 #define SMB2_CANCEL		cpu_to_le16(SMB2_CANCEL_HE)
53 #define SMB2_ECHO		cpu_to_le16(SMB2_ECHO_HE)
54 #define SMB2_QUERY_DIRECTORY	cpu_to_le16(SMB2_QUERY_DIRECTORY_HE)
55 #define SMB2_CHANGE_NOTIFY	cpu_to_le16(SMB2_CHANGE_NOTIFY_HE)
56 #define SMB2_QUERY_INFO		cpu_to_le16(SMB2_QUERY_INFO_HE)
57 #define SMB2_SET_INFO		cpu_to_le16(SMB2_SET_INFO_HE)
58 #define SMB2_OPLOCK_BREAK	cpu_to_le16(SMB2_OPLOCK_BREAK_HE)
59 
60 #define SMB2_INTERNAL_CMD	cpu_to_le16(0xFFFF)
61 
62 #define NUMBER_OF_SMB2_COMMANDS	0x0013
63 
64 /*
65  * Size of the session key (crypto key encrypted with the password
66  */
67 #define SMB2_NTLMV2_SESSKEY_SIZE	16
68 #define SMB2_SIGNATURE_SIZE		16
69 #define SMB2_HMACSHA256_SIZE		32
70 #define SMB2_CMACAES_SIZE		16
71 #define SMB3_GCM128_CRYPTKEY_SIZE	16
72 #define SMB3_GCM256_CRYPTKEY_SIZE	32
73 
74 /*
75  * Size of the smb3 encryption/decryption keys
76  * This size is big enough to store any cipher key types.
77  */
78 #define SMB3_ENC_DEC_KEY_SIZE		32
79 
80 /*
81  * Size of the smb3 signing key
82  */
83 #define SMB3_SIGN_KEY_SIZE		16
84 
85 #define CIFS_CLIENT_CHALLENGE_SIZE	8
86 
87 /* Maximum buffer size value we can send with 1 credit */
88 #define SMB2_MAX_BUFFER_SIZE 65536
89 
90 /*
91  * The default wsize is 1M for SMB2 (and for some CIFS cases).
92  * find_get_pages seems to return a maximum of 256
93  * pages in a single call. With PAGE_SIZE == 4k, this means we can
94  * fill a single wsize request with a single call.
95  */
96 #define SMB3_DEFAULT_IOSIZE (4 * 1024 * 1024)
97 
98 /*
99  * SMB2 Header Definition
100  *
101  * "MBZ" :  Must be Zero
102  * "BB"  :  BugBug, Something to check/review/analyze later
103  * "PDU" :  "Protocol Data Unit" (ie a network "frame")
104  *
105  */
106 
107 #define __SMB2_HEADER_STRUCTURE_SIZE	64
108 #define SMB2_HEADER_STRUCTURE_SIZE				\
109 	cpu_to_le16(__SMB2_HEADER_STRUCTURE_SIZE)
110 
111 #define SMB2_PROTO_NUMBER cpu_to_le32(0x424d53fe)
112 #define SMB2_TRANSFORM_PROTO_NUM cpu_to_le32(0x424d53fd)
113 #define SMB2_COMPRESSION_TRANSFORM_ID cpu_to_le32(0x424d53fc)
114 
115 /*
116  *	SMB2 flag definitions
117  */
118 #define SMB2_FLAGS_SERVER_TO_REDIR	cpu_to_le32(0x00000001)
119 #define SMB2_FLAGS_ASYNC_COMMAND	cpu_to_le32(0x00000002)
120 #define SMB2_FLAGS_RELATED_OPERATIONS	cpu_to_le32(0x00000004)
121 #define SMB2_FLAGS_SIGNED		cpu_to_le32(0x00000008)
122 #define SMB2_FLAGS_PRIORITY_MASK	cpu_to_le32(0x00000070) /* SMB3.1.1 */
123 #define SMB2_FLAGS_DFS_OPERATIONS	cpu_to_le32(0x10000000)
124 #define SMB2_FLAGS_REPLAY_OPERATION	cpu_to_le32(0x20000000) /* SMB3 & up */
125 
126 /*
127  *	Definitions for SMB2 Protocol Data Units (network frames)
128  *
129  *  See MS-SMB2.PDF specification for protocol details.
130  *  The Naming convention is the lower case version of the SMB2
131  *  command code name for the struct. Note that structures must be packed.
132  *
133  */
134 
135 /* See MS-SMB2 section 2.2.1 */
136 struct smb2_hdr {
137 	__le32 ProtocolId;	/* 0xFE 'S' 'M' 'B' */
138 	__le16 StructureSize;	/* 64 */
139 	__le16 CreditCharge;	/* MBZ */
140 	__le32 Status;		/* Error from server */
141 	__le16 Command;
142 	__le16 CreditRequest;	/* CreditResponse */
143 	__le32 Flags;
144 	__le32 NextCommand;
145 	__le64 MessageId;
146 	union {
147 		struct {
148 			__le32 ProcessId;
149 			__le32  TreeId;
150 		} __packed SyncId;
151 		__le64  AsyncId;
152 	} __packed Id;
153 	__le64  SessionId;
154 	__u8   Signature[16];
155 } __packed;
156 
157 struct smb3_hdr_req {
158 	__le32 ProtocolId;	/* 0xFE 'S' 'M' 'B' */
159 	__le16 StructureSize;	/* 64 */
160 	__le16 CreditCharge;	/* MBZ */
161 	__le16 ChannelSequence; /* See MS-SMB2 3.2.4.1 and 3.2.7.1 */
162 	__le16 Reserved;
163 	__le16 Command;
164 	__le16 CreditRequest;	/* CreditResponse */
165 	__le32 Flags;
166 	__le32 NextCommand;
167 	__le64 MessageId;
168 	union {
169 		struct {
170 			__le32 ProcessId;
171 			__le32  TreeId;
172 		} __packed SyncId;
173 		__le64  AsyncId;
174 	} __packed Id;
175 	__le64  SessionId;
176 	__u8   Signature[16];
177 } __packed;
178 
179 struct smb2_pdu {
180 	struct smb2_hdr hdr;
181 	__le16 StructureSize2; /* size of wct area (varies, request specific) */
182 } __packed;
183 
184 #define SMB2_ERROR_STRUCTURE_SIZE2	9
185 #define SMB2_ERROR_STRUCTURE_SIZE2_LE	cpu_to_le16(SMB2_ERROR_STRUCTURE_SIZE2)
186 
187 struct smb2_err_rsp {
188 	struct smb2_hdr hdr;
189 	__le16 StructureSize;
190 	__u8   ErrorContextCount;
191 	__u8   Reserved;
192 	__le32 ByteCount;  /* even if zero, at least one byte follows */
193 	__u8   ErrorData[];  /* variable length */
194 } __packed;
195 
196 #define SMB3_AES_CCM_NONCE 11
197 #define SMB3_AES_GCM_NONCE 12
198 
199 /* Transform flags (for 3.0 dialect this flag indicates CCM */
200 #define TRANSFORM_FLAG_ENCRYPTED	0x0001
201 struct smb2_transform_hdr {
202 	__le32 ProtocolId;	/* 0xFD 'S' 'M' 'B' */
203 	__u8   Signature[16];
204 	__u8   Nonce[16];
205 	__le32 OriginalMessageSize;
206 	__u16  Reserved1;
207 	__le16 Flags; /* EncryptionAlgorithm for 3.0, enc enabled for 3.1.1 */
208 	__le64  SessionId;
209 } __packed;
210 
211 /*
212  * These are simplified versions from the spec, as we don't need a fully fledged
213  * form of both unchained and chained structs.
214  *
215  * Moreover, even in chained compressed payloads, the initial compression header
216  * has the form of the unchained one -- i.e. it never has the
217  * OriginalPayloadSize field and ::Offset field always represent an offset
218  * (instead of a length, as it is in the chained header).
219  *
220  * See MS-SMB2 2.2.42 for more details.
221  */
222 #define SMB2_COMPRESSION_FLAG_NONE	0x0000
223 #define SMB2_COMPRESSION_FLAG_CHAINED	0x0001
224 
225 struct smb2_compression_hdr {
226 	__le32 ProtocolId; /* 0xFC 'S' 'M' 'B' */
227 	__le32 OriginalCompressedSegmentSize;
228 	__le16 CompressionAlgorithm;
229 	__le16 Flags;
230 	__le32 Offset; /* this is the size of the uncompressed SMB2 header below */
231 	/* uncompressed SMB2 header (READ or WRITE) goes here */
232 	/* compressed data goes here */
233 } __packed;
234 
235 /*
236  * ... OTOH, set compression payload header to always have OriginalPayloadSize
237  * as it's easier to pass the struct size minus sizeof(OriginalPayloadSize)
238  * than to juggle around the header/data memory.
239  */
240 struct smb2_compression_payload_hdr {
241 	__le16	CompressionAlgorithm;
242 	__le16	Flags;
243 	__le32	Length; /* length of compressed playload including field below if present */
244 	__le32 OriginalPayloadSize; /* accounted when LZNT1, LZ77, LZ77+Huffman */
245 } __packed;
246 
247 struct smb2_compression_pattern_v1 {
248 	__u8	Pattern;
249 	__u8	Reserved1;
250 	__le16	Reserved2;
251 	__le32	Repetitions;
252 } __packed;
253 
254 /* See MS-SMB2 section 2.2.9.2 */
255 /* Context Types */
256 #define SMB2_RESERVED_TREE_CONNECT_CONTEXT_ID 0x0000
257 #define SMB2_REMOTED_IDENTITY_TREE_CONNECT_CONTEXT_ID cpu_to_le16(0x0001)
258 
259 struct tree_connect_contexts {
260 	__le16 ContextType;
261 	__le16 DataLength;
262 	__le32 Reserved;
263 	__u8   Data[];
264 } __packed;
265 
266 /* Remoted identity tree connect context structures - see MS-SMB2 2.2.9.2.1 */
267 struct smb3_blob_data {
268 	__le16 BlobSize;
269 	__u8   BlobData[];
270 } __packed;
271 
272 /* Valid values for Attr */
273 #define SE_GROUP_MANDATORY		0x00000001
274 #define SE_GROUP_ENABLED_BY_DEFAULT	0x00000002
275 #define SE_GROUP_ENABLED		0x00000004
276 #define SE_GROUP_OWNER			0x00000008
277 #define SE_GROUP_USE_FOR_DENY_ONLY	0x00000010
278 #define SE_GROUP_INTEGRITY		0x00000020
279 #define SE_GROUP_INTEGRITY_ENABLED	0x00000040
280 #define SE_GROUP_RESOURCE		0x20000000
281 #define SE_GROUP_LOGON_ID		0xC0000000
282 
283 struct sid_array_data {
284 	__le16 SidAttrCount;
285 	/* SidAttrList - array of sid_attr_data structs */
286 } __packed;
287 
288 /* struct sid_attr_data is SidData array in BlobData format then le32 Attr */
289 struct sid_attr_data {
290 	__le16 BlobSize;
291 	__u8 BlobData[];
292 	/* __le32 Attr */
293 } __packed;
294 
295 /*
296  * struct privilege_data is the same as BLOB_DATA - see MS-SMB2 2.2.9.2.1.5
297  * but with size of LUID_ATTR_DATA struct and BlobData set to LUID_ATTR DATA
298  */
299 
300 struct privilege_array_data {
301 	__le16 PrivilegeCount;
302 	/* array of privilege_data structs */
303 } __packed;
304 
305 struct remoted_identity_tcon_context {
306 	__le16 TicketType; /* must be 0x0001 */
307 	__le16 TicketSize; /* total size of this struct */
308 	__le16 User; /* offset to SID_ATTR_DATA struct with user info */
309 	__le16 UserName; /* offset to null terminated Unicode username string */
310 	__le16 Domain; /* offset to null terminated Unicode domain name */
311 	__le16 Groups; /* offset to SID_ARRAY_DATA struct with group info */
312 	__le16 RestrictedGroups; /* similar to above */
313 	__le16 Privileges; /* offset to PRIVILEGE_ARRAY_DATA struct */
314 	__le16 PrimaryGroup; /* offset to SID_ARRAY_DATA struct */
315 	__le16 Owner; /* offset to BLOB_DATA struct */
316 	__le16 DefaultDacl; /* offset to BLOB_DATA struct */
317 	__le16 DeviceGroups; /* offset to SID_ARRAY_DATA struct */
318 	__le16 UserClaims; /* offset to BLOB_DATA struct */
319 	__le16 DeviceClaims; /* offset to BLOB_DATA struct */
320 	__u8   TicketInfo[]; /* variable length buf - remoted identity data */
321 } __packed;
322 
323 struct smb2_tree_connect_req_extension {
324 	__le32 TreeConnectContextOffset;
325 	__le16 TreeConnectContextCount;
326 	__u8  Reserved[10];
327 	__u8  PathName[]; /* variable sized array */
328 	/* followed by array of TreeConnectContexts */
329 } __packed;
330 
331 /* Flags/Reserved for SMB3.1.1 */
332 #define SMB2_TREE_CONNECT_FLAG_CLUSTER_RECONNECT cpu_to_le16(0x0001)
333 #define SMB2_TREE_CONNECT_FLAG_REDIRECT_TO_OWNER cpu_to_le16(0x0002)
334 #define SMB2_TREE_CONNECT_FLAG_EXTENSION_PRESENT cpu_to_le16(0x0004)
335 
336 struct smb2_tree_connect_req {
337 	struct smb2_hdr hdr;
338 	__le16 StructureSize;	/* Must be 9 */
339 	__le16 Flags;		/* Flags in SMB3.1.1 */
340 	__le16 PathOffset;
341 	__le16 PathLength;
342 	__u8   Buffer[];	/* variable length */
343 } __packed;
344 
345 /* Possible ShareType values */
346 #define SMB2_SHARE_TYPE_DISK	0x01
347 #define SMB2_SHARE_TYPE_PIPE	0x02
348 #define	SMB2_SHARE_TYPE_PRINT	0x03
349 
350 /*
351  * Possible ShareFlags - exactly one and only one of the first 4 caching flags
352  * must be set (any of the remaining, SHI1005, flags may be set individually
353  * or in combination.
354  */
355 #define SMB2_SHAREFLAG_MANUAL_CACHING			0x00000000
356 #define SMB2_SHAREFLAG_AUTO_CACHING			0x00000010
357 #define SMB2_SHAREFLAG_VDO_CACHING			0x00000020
358 #define SMB2_SHAREFLAG_NO_CACHING			0x00000030
359 #define SHI1005_FLAGS_DFS				0x00000001
360 #define SHI1005_FLAGS_DFS_ROOT				0x00000002
361 #define SMB2_SHAREFLAG_RESTRICT_EXCLUSIVE_OPENS		0x00000100
362 #define SMB2_SHAREFLAG_FORCE_SHARED_DELETE		0x00000200
363 #define SMB2_SHAREFLAG_ALLOW_NAMESPACE_CACHING		0x00000400
364 #define SMB2_SHAREFLAG_ACCESS_BASED_DIRECTORY_ENUM	0x00000800
365 #define SMB2_SHAREFLAG_FORCE_LEVELII_OPLOCK		0x00001000
366 #define SMB2_SHAREFLAG_ENABLE_HASH_V1			0x00002000
367 #define SMB2_SHAREFLAG_ENABLE_HASH_V2			0x00004000
368 #define SHI1005_FLAGS_ENCRYPT_DATA			0x00008000
369 #define SMB2_SHAREFLAG_IDENTITY_REMOTING		0x00040000 /* 3.1.1 */
370 #define SMB2_SHAREFLAG_COMPRESS_DATA			0x00100000 /* 3.1.1 */
371 #define SMB2_SHAREFLAG_ISOLATED_TRANSPORT		0x00200000
372 #define SHI1005_FLAGS_ALL				0x0034FF33
373 
374 /* Possible share capabilities */
375 #define SMB2_SHARE_CAP_DFS	cpu_to_le32(0x00000008) /* all dialects */
376 #define SMB2_SHARE_CAP_CONTINUOUS_AVAILABILITY cpu_to_le32(0x00000010) /* 3.0 */
377 #define SMB2_SHARE_CAP_SCALEOUT	cpu_to_le32(0x00000020) /* 3.0 */
378 #define SMB2_SHARE_CAP_CLUSTER	cpu_to_le32(0x00000040) /* 3.0 */
379 #define SMB2_SHARE_CAP_ASYMMETRIC cpu_to_le32(0x00000080) /* 3.02 */
380 #define SMB2_SHARE_CAP_REDIRECT_TO_OWNER cpu_to_le32(0x00000100) /* 3.1.1 */
381 
382 struct smb2_tree_connect_rsp {
383 	struct smb2_hdr hdr;
384 	__le16 StructureSize;	/* Must be 16 */
385 	__u8   ShareType;	/* see below */
386 	__u8   Reserved;
387 	__le32 ShareFlags;	/* see below */
388 	__le32 Capabilities;	/* see below */
389 	__le32 MaximalAccess;
390 } __packed;
391 
392 struct smb2_tree_disconnect_req {
393 	struct smb2_hdr hdr;
394 	__le16 StructureSize;	/* Must be 4 */
395 	__le16 Reserved;
396 } __packed;
397 
398 struct smb2_tree_disconnect_rsp {
399 	struct smb2_hdr hdr;
400 	__le16 StructureSize;	/* Must be 4 */
401 	__le16 Reserved;
402 } __packed;
403 
404 
405 /*
406  * SMB2_NEGOTIATE_PROTOCOL  See MS-SMB2 section 2.2.3
407  */
408 /* SecurityMode flags */
409 #define	SMB2_NEGOTIATE_SIGNING_ENABLED     0x0001
410 #define	SMB2_NEGOTIATE_SIGNING_ENABLED_LE  cpu_to_le16(0x0001)
411 #define SMB2_NEGOTIATE_SIGNING_REQUIRED	   0x0002
412 #define SMB2_NEGOTIATE_SIGNING_REQUIRED_LE cpu_to_le16(0x0002)
413 #define SMB2_SEC_MODE_FLAGS_ALL            0x0003
414 
415 /* Capabilities flags */
416 #define SMB2_GLOBAL_CAP_DFS		0x00000001
417 #define SMB2_GLOBAL_CAP_LEASING		0x00000002 /* Resp only New to SMB2.1 */
418 #define SMB2_GLOBAL_CAP_LARGE_MTU	0x00000004 /* Resp only New to SMB2.1 */
419 #define SMB2_GLOBAL_CAP_MULTI_CHANNEL	0x00000008 /* New to SMB3 */
420 #define SMB2_GLOBAL_CAP_PERSISTENT_HANDLES 0x00000010 /* New to SMB3 */
421 #define SMB2_GLOBAL_CAP_DIRECTORY_LEASING  0x00000020 /* New to SMB3 */
422 #define SMB2_GLOBAL_CAP_ENCRYPTION	0x00000040 /* New to SMB3 */
423 #define SMB2_GLOBAL_CAP_NOTIFICATIONS	0x00000080 /* New to SMB3.1.1 */
424 /* Internal types */
425 #define SMB2_NT_FIND			0x00100000
426 #define SMB2_LARGE_FILES		0x00200000
427 
428 #define SMB2_CLIENT_GUID_SIZE		16
429 #define SMB2_CREATE_GUID_SIZE		16
430 
431 /* Dialects */
432 #define SMB10_PROT_ID  0x0000 /* local only, not sent on wire w/CIFS negprot */
433 #define SMB20_PROT_ID  0x0202
434 #define SMB21_PROT_ID  0x0210
435 #define SMB2X_PROT_ID  0x02FF
436 #define SMB30_PROT_ID  0x0300
437 #define SMB302_PROT_ID 0x0302
438 #define SMB311_PROT_ID 0x0311
439 #define BAD_PROT_ID    0xFFFF
440 
441 #define SMB311_SALT_SIZE			32
442 /* Hash Algorithm Types */
443 #define SMB2_PREAUTH_INTEGRITY_SHA512	cpu_to_le16(0x0001)
444 #define SMB2_PREAUTH_HASH_SIZE 64
445 
446 /* Negotiate Contexts - ContextTypes. See MS-SMB2 section 2.2.3.1 for details */
447 #define SMB2_PREAUTH_INTEGRITY_CAPABILITIES	cpu_to_le16(1)
448 #define SMB2_ENCRYPTION_CAPABILITIES		cpu_to_le16(2)
449 #define SMB2_COMPRESSION_CAPABILITIES		cpu_to_le16(3)
450 #define SMB2_NETNAME_NEGOTIATE_CONTEXT_ID	cpu_to_le16(5)
451 #define SMB2_TRANSPORT_CAPABILITIES		cpu_to_le16(6)
452 #define SMB2_RDMA_TRANSFORM_CAPABILITIES	cpu_to_le16(7)
453 #define SMB2_SIGNING_CAPABILITIES		cpu_to_le16(8)
454 #define SMB2_POSIX_EXTENSIONS_AVAILABLE		cpu_to_le16(0x100)
455 
456 struct smb2_neg_context {
457 	__le16	ContextType;
458 	__le16	DataLength;
459 	__le32	Reserved;
460 	/* Followed by array of data. NOTE: some servers require padding to 8 byte boundary */
461 } __packed;
462 
463 /*
464  * SaltLength that the server send can be zero, so the only three required
465  * fields (all __le16) end up six bytes total, so the minimum context data len
466  * in the response is six bytes which accounts for
467  *
468  *      HashAlgorithmCount, SaltLength, and 1 HashAlgorithm.
469  */
470 #define MIN_PREAUTH_CTXT_DATA_LEN 6
471 
472 struct smb2_preauth_neg_context {
473 	__le16	ContextType; /* 1 */
474 	__le16	DataLength;
475 	__le32	Reserved;
476 	__le16	HashAlgorithmCount; /* 1 */
477 	__le16	SaltLength;
478 	__le16	HashAlgorithms; /* HashAlgorithms[0] since only one defined */
479 	__u8	Salt[SMB311_SALT_SIZE];
480 } __packed;
481 
482 /* Encryption Algorithms Ciphers */
483 #define SMB2_ENCRYPTION_AES128_CCM	cpu_to_le16(0x0001)
484 #define SMB2_ENCRYPTION_AES128_GCM	cpu_to_le16(0x0002)
485 #define SMB2_ENCRYPTION_AES256_CCM      cpu_to_le16(0x0003)
486 #define SMB2_ENCRYPTION_AES256_GCM      cpu_to_le16(0x0004)
487 
488 /* Min encrypt context data is one cipher so 2 bytes + 2 byte count field */
489 #define MIN_ENCRYPT_CTXT_DATA_LEN	4
490 struct smb2_encryption_neg_context {
491 	__le16	ContextType; /* 2 */
492 	__le16	DataLength;
493 	__le32	Reserved;
494 	/* CipherCount usually 2, but can be 3 when AES256-GCM enabled */
495 	__le16	CipherCount; /* AES128-GCM and AES128-CCM by default */
496 	__le16	Ciphers[];
497 } __packed;
498 
499 /* See MS-SMB2 2.2.3.1.3 */
500 #define SMB3_COMPRESS_NONE	cpu_to_le16(0x0000)
501 #define SMB3_COMPRESS_LZNT1	cpu_to_le16(0x0001)
502 #define SMB3_COMPRESS_LZ77	cpu_to_le16(0x0002)
503 #define SMB3_COMPRESS_LZ77_HUFF	cpu_to_le16(0x0003)
504 /* Pattern scanning algorithm See MS-SMB2 3.1.4.4.1 */
505 #define SMB3_COMPRESS_PATTERN	cpu_to_le16(0x0004) /* Pattern_V1 */
506 #define SMB3_COMPRESS_LZ4	cpu_to_le16(0x0005)
507 
508 /* Compression Flags */
509 #define SMB2_COMPRESSION_CAPABILITIES_FLAG_NONE		cpu_to_le32(0x00000000)
510 #define SMB2_COMPRESSION_CAPABILITIES_FLAG_CHAINED	cpu_to_le32(0x00000001)
511 
512 struct smb2_compression_capabilities_context {
513 	__le16	ContextType; /* 3 */
514 	__le16  DataLength;
515 	__le32	Reserved;
516 	__le16	CompressionAlgorithmCount;
517 	__le16	Padding;
518 	__le32	Flags;
519 	__le16	CompressionAlgorithms[3];
520 	__u16	Pad;  /* Some servers require pad to DataLen multiple of 8 */
521 	/* Check if pad needed */
522 } __packed;
523 
524 /*
525  * For smb2_netname_negotiate_context_id See MS-SMB2 2.2.3.1.4.
526  * Its struct simply contains NetName, an array of Unicode characters
527  */
528 struct smb2_netname_neg_context {
529 	__le16	ContextType; /* 5 */
530 	__le16	DataLength;
531 	__le32	Reserved;
532 	__le16	NetName[]; /* hostname of target converted to UCS-2 */
533 } __packed;
534 
535 /*
536  * For smb2_transport_capabilities context see MS-SMB2 2.2.3.1.5
537  * and 2.2.4.1.5
538  */
539 
540 /* Flags */
541 #define SMB2_ACCEPT_TRANSPORT_LEVEL_SECURITY	0x00000001
542 
543 struct smb2_transport_capabilities_context {
544 	__le16	ContextType; /* 6 */
545 	__le16  DataLength;
546 	__u32	Reserved;
547 	__le32	Flags;
548 	__u32	Pad;
549 } __packed;
550 
551 /*
552  * For rdma transform capabilities context see MS-SMB2 2.2.3.1.6
553  * and 2.2.4.1.6
554  */
555 
556 /* RDMA Transform IDs */
557 #define SMB2_RDMA_TRANSFORM_NONE	0x0000
558 #define SMB2_RDMA_TRANSFORM_ENCRYPTION	0x0001
559 #define SMB2_RDMA_TRANSFORM_SIGNING	0x0002
560 
561 struct smb2_rdma_transform_capabilities_context {
562 	__le16	ContextType; /* 7 */
563 	__le16  DataLength;
564 	__u32	Reserved;
565 	__le16	TransformCount;
566 	__u16	Reserved1;
567 	__u32	Reserved2;
568 	__le16	RDMATransformIds[];
569 } __packed;
570 
571 /*
572  * For signing capabilities context see MS-SMB2 2.2.3.1.7
573  * and 2.2.4.1.7
574  */
575 
576 /* Signing algorithms */
577 #define SIGNING_ALG_HMAC_SHA256    0
578 #define SIGNING_ALG_HMAC_SHA256_LE cpu_to_le16(0)
579 #define SIGNING_ALG_AES_CMAC       1
580 #define SIGNING_ALG_AES_CMAC_LE    cpu_to_le16(1)
581 #define SIGNING_ALG_AES_GMAC       2
582 #define SIGNING_ALG_AES_GMAC_LE    cpu_to_le16(2)
583 
584 struct smb2_signing_capabilities {
585 	__le16	ContextType; /* 8 */
586 	__le16	DataLength;
587 	__le32	Reserved;
588 	__le16	SigningAlgorithmCount;
589 	__le16	SigningAlgorithms[];
590 	/*  Followed by padding to 8 byte boundary (required by some servers) */
591 } __packed;
592 
593 #define POSIX_CTXT_DATA_LEN	16
594 struct smb2_posix_neg_context {
595 	__le16	ContextType; /* 0x100 */
596 	__le16	DataLength;
597 	__le32	Reserved;
598 	__u8	Name[16]; /* POSIX ctxt GUID 93AD25509CB411E7B42383DE968BCD7C */
599 } __packed;
600 
601 struct smb2_negotiate_req {
602 	struct smb2_hdr hdr;
603 	__le16 StructureSize; /* Must be 36 */
604 	__le16 DialectCount;
605 	__le16 SecurityMode;
606 	__le16 Reserved;	/* MBZ */
607 	__le32 Capabilities;
608 	__u8   ClientGUID[SMB2_CLIENT_GUID_SIZE];
609 	/* In SMB3.02 and earlier next three were MBZ le64 ClientStartTime */
610 	__le32 NegotiateContextOffset; /* SMB3.1.1 only. MBZ earlier */
611 	__le16 NegotiateContextCount;  /* SMB3.1.1 only. MBZ earlier */
612 	__le16 Reserved2;
613 	__le16 Dialects[];
614 } __packed;
615 
616 struct smb2_negotiate_rsp {
617 	struct smb2_hdr hdr;
618 	__le16 StructureSize;	/* Must be 65 */
619 	__le16 SecurityMode;
620 	__le16 DialectRevision;
621 	__le16 NegotiateContextCount;	/* Prior to SMB3.1.1 was Reserved & MBZ */
622 	__u8   ServerGUID[16];
623 	__le32 Capabilities;
624 	__le32 MaxTransactSize;
625 	__le32 MaxReadSize;
626 	__le32 MaxWriteSize;
627 	__le64 SystemTime;	/* MBZ */
628 	__le64 ServerStartTime;
629 	__le16 SecurityBufferOffset;
630 	__le16 SecurityBufferLength;
631 	__le32 NegotiateContextOffset;	/* Pre:SMB3.1.1 was reserved/ignored */
632 	__u8   Buffer[];	/* variable length GSS security buffer */
633 } __packed;
634 
635 
636 /*
637  * SMB2_SESSION_SETUP  See MS-SMB2 section 2.2.5
638  */
639 /* Flags */
640 #define SMB2_SESSION_REQ_FLAG_BINDING		0x01
641 #define SMB2_SESSION_REQ_FLAG_ENCRYPT_DATA	0x04
642 
643 struct smb2_sess_setup_req {
644 	struct smb2_hdr hdr;
645 	__le16 StructureSize; /* Must be 25 */
646 	__u8   Flags;
647 	__u8   SecurityMode;
648 	__le32 Capabilities;
649 	__le32 Channel;
650 	__le16 SecurityBufferOffset;
651 	__le16 SecurityBufferLength;
652 	__le64 PreviousSessionId;
653 	__u8   Buffer[];	/* variable length GSS security buffer */
654 } __packed;
655 
656 /* Currently defined SessionFlags */
657 #define SMB2_SESSION_FLAG_IS_GUEST        0x0001
658 #define SMB2_SESSION_FLAG_IS_GUEST_LE     cpu_to_le16(0x0001)
659 #define SMB2_SESSION_FLAG_IS_NULL         0x0002
660 #define SMB2_SESSION_FLAG_IS_NULL_LE      cpu_to_le16(0x0002)
661 #define SMB2_SESSION_FLAG_ENCRYPT_DATA    0x0004
662 #define SMB2_SESSION_FLAG_ENCRYPT_DATA_LE cpu_to_le16(0x0004)
663 
664 struct smb2_sess_setup_rsp {
665 	struct smb2_hdr hdr;
666 	__le16 StructureSize; /* Must be 9 */
667 	__le16 SessionFlags;
668 	__le16 SecurityBufferOffset;
669 	__le16 SecurityBufferLength;
670 	__u8   Buffer[];	/* variable length GSS security buffer */
671 } __packed;
672 
673 
674 /*
675  * SMB2_LOGOFF  See MS-SMB2 section 2.2.7
676  */
677 struct smb2_logoff_req {
678 	struct smb2_hdr hdr;
679 	__le16 StructureSize;	/* Must be 4 */
680 	__le16 Reserved;
681 } __packed;
682 
683 struct smb2_logoff_rsp {
684 	struct smb2_hdr hdr;
685 	__le16 StructureSize;	/* Must be 4 */
686 	__le16 Reserved;
687 } __packed;
688 
689 
690 /*
691  * SMB2_CLOSE  See MS-SMB2 section 2.2.15
692  */
693 /* Currently defined values for close flags */
694 #define SMB2_CLOSE_FLAG_POSTQUERY_ATTRIB	cpu_to_le16(0x0001)
695 struct smb2_close_req {
696 	struct smb2_hdr hdr;
697 	__le16 StructureSize;	/* Must be 24 */
698 	__le16 Flags;
699 	__le32 Reserved;
700 	__u64  PersistentFileId; /* opaque endianness */
701 	__u64  VolatileFileId; /* opaque endianness */
702 } __packed;
703 
704 /*
705  * Maximum size of a SMB2_CLOSE response is 64 (smb2 header) + 60 (data)
706  */
707 #define MAX_SMB2_CLOSE_RESPONSE_SIZE 124
708 
709 struct smb2_close_rsp {
710 	struct smb2_hdr hdr;
711 	__le16 StructureSize; /* 60 */
712 	__le16 Flags;
713 	__le32 Reserved;
714 	struct_group_attr(network_open_info, __packed,
715 		__le64 CreationTime;
716 		__le64 LastAccessTime;
717 		__le64 LastWriteTime;
718 		__le64 ChangeTime;
719 		/* Beginning of FILE_STANDARD_INFO equivalent */
720 		__le64 AllocationSize;
721 		__le64 EndOfFile;
722 		__le32 Attributes;
723 	);
724 } __packed;
725 
726 
727 /*
728  * SMB2_READ  See MS-SMB2 section 2.2.19
729  */
730 /* For read request Flags field below, following flag is defined for SMB3.02 */
731 #define SMB2_READFLAG_READ_UNBUFFERED	0x01
732 #define SMB2_READFLAG_REQUEST_COMPRESSED 0x02 /* See MS-SMB2 2.2.19 */
733 
734 /* Channel field for read and write: exactly one of following flags can be set*/
735 #define SMB2_CHANNEL_NONE               cpu_to_le32(0x00000000)
736 #define SMB2_CHANNEL_RDMA_V1            cpu_to_le32(0x00000001)
737 #define SMB2_CHANNEL_RDMA_V1_INVALIDATE cpu_to_le32(0x00000002)
738 #define SMB2_CHANNEL_RDMA_TRANSFORM     cpu_to_le32(0x00000003)
739 
740 /* SMB2 read request without RFC1001 length at the beginning */
741 struct smb2_read_req {
742 	struct smb2_hdr hdr;
743 	__le16 StructureSize; /* Must be 49 */
744 	__u8   Padding; /* offset from start of SMB2 header to place read */
745 	__u8   Flags; /* MBZ unless SMB3.02 or later */
746 	__le32 Length;
747 	__le64 Offset;
748 	__u64  PersistentFileId;
749 	__u64  VolatileFileId;
750 	__le32 MinimumCount;
751 	__le32 Channel; /* MBZ except for SMB3 or later */
752 	__le32 RemainingBytes;
753 	__le16 ReadChannelInfoOffset;
754 	__le16 ReadChannelInfoLength;
755 	__u8   Buffer[];
756 } __packed;
757 
758 /* Read flags */
759 #define SMB2_READFLAG_RESPONSE_NONE            cpu_to_le32(0x00000000)
760 #define SMB2_READFLAG_RESPONSE_RDMA_TRANSFORM  cpu_to_le32(0x00000001)
761 
762 struct smb2_read_rsp {
763 	struct smb2_hdr hdr;
764 	__le16 StructureSize; /* Must be 17 */
765 	__u8   DataOffset;
766 	__u8   Reserved;
767 	__le32 DataLength;
768 	__le32 DataRemaining;
769 	__le32 Flags;
770 	__u8   Buffer[];
771 } __packed;
772 
773 
774 /*
775  * SMB2_WRITE  See MS-SMB2 section 2.2.21
776  */
777 /* For write request Flags field below the following flags are defined: */
778 #define SMB2_WRITEFLAG_WRITE_THROUGH	0x00000001	/* SMB2.1 or later */
779 #define SMB2_WRITEFLAG_WRITE_UNBUFFERED	0x00000002	/* SMB3.02 or later */
780 
781 struct smb2_write_req {
782 	struct smb2_hdr hdr;
783 	__le16 StructureSize; /* Must be 49 */
784 	__le16 DataOffset; /* offset from start of SMB2 header to write data */
785 	__le32 Length;
786 	__le64 Offset;
787 	__u64  PersistentFileId; /* opaque endianness */
788 	__u64  VolatileFileId; /* opaque endianness */
789 	__le32 Channel; /* MBZ unless SMB3.02 or later */
790 	__le32 RemainingBytes;
791 	__le16 WriteChannelInfoOffset;
792 	__le16 WriteChannelInfoLength;
793 	__le32 Flags;
794 	__u8   Buffer[];
795 } __packed;
796 
797 struct smb2_write_rsp {
798 	struct smb2_hdr hdr;
799 	__le16 StructureSize; /* Must be 17 */
800 	__u8   DataOffset;
801 	__u8   Reserved;
802 	__le32 DataLength;
803 	__le32 DataRemaining;
804 	__u32  Reserved2;
805 	__u8   Buffer[];
806 } __packed;
807 
808 
809 /*
810  * SMB2_FLUSH  See MS-SMB2 section 2.2.17
811  */
812 struct smb2_flush_req {
813 	struct smb2_hdr hdr;
814 	__le16 StructureSize;	/* Must be 24 */
815 	__le16 Reserved1;
816 	__le32 Reserved2;
817 	__u64  PersistentFileId;
818 	__u64  VolatileFileId;
819 } __packed;
820 
821 struct smb2_flush_rsp {
822 	struct smb2_hdr hdr;
823 	__le16 StructureSize;
824 	__le16 Reserved;
825 } __packed;
826 
827 #define SMB2_LOCKFLAG_SHARED		0x0001
828 #define SMB2_LOCKFLAG_EXCLUSIVE		0x0002
829 #define SMB2_LOCKFLAG_UNLOCK		0x0004
830 #define SMB2_LOCKFLAG_FAIL_IMMEDIATELY	0x0010
831 #define SMB2_LOCKFLAG_MASK		0x0007
832 
833 struct smb2_lock_element {
834 	__le64 Offset;
835 	__le64 Length;
836 	__le32 Flags;
837 	__le32 Reserved;
838 } __packed;
839 
840 struct smb2_lock_req {
841 	struct smb2_hdr hdr;
842 	__le16 StructureSize; /* Must be 48 */
843 	__le16 LockCount;
844 	/*
845 	 * The least significant four bits are the index, the other 28 bits are
846 	 * the lock sequence number (0 to 64). See MS-SMB2 2.2.26
847 	 */
848 	__le32 LockSequenceNumber;
849 	__u64  PersistentFileId;
850 	__u64  VolatileFileId;
851 	/* Followed by at least one */
852 	union {
853 		struct smb2_lock_element lock;
854 		DECLARE_FLEX_ARRAY(struct smb2_lock_element, locks);
855 	};
856 } __packed;
857 
858 struct smb2_lock_rsp {
859 	struct smb2_hdr hdr;
860 	__le16 StructureSize; /* Must be 4 */
861 	__le16 Reserved;
862 } __packed;
863 
864 struct smb2_echo_req {
865 	struct smb2_hdr hdr;
866 	__le16 StructureSize;	/* Must be 4 */
867 	__u16  Reserved;
868 } __packed;
869 
870 struct smb2_echo_rsp {
871 	struct smb2_hdr hdr;
872 	__le16 StructureSize;	/* Must be 4 */
873 	__u16  Reserved;
874 } __packed;
875 
876 /*
877  * Valid FileInformation classes for query directory
878  *
879  * Note that these are a subset of the (file) QUERY_INFO levels defined
880  * later in this file (but since QUERY_DIRECTORY uses equivalent numbers
881  * we do not redefine them here)
882  *
883  * FileDirectoryInfomation		0x01
884  * FileFullDirectoryInformation		0x02
885  * FileIdFullDirectoryInformation	0x26
886  * FileBothDirectoryInformation		0x03
887  * FileIdBothDirectoryInformation	0x25
888  * FileNamesInformation			0x0C
889  * FileIdExtdDirectoryInformation	0x3C
890  */
891 
892 /* search (query_directory) Flags field */
893 #define SMB2_RESTART_SCANS		0x01
894 #define SMB2_RETURN_SINGLE_ENTRY	0x02
895 #define SMB2_INDEX_SPECIFIED		0x04
896 #define SMB2_REOPEN			0x10
897 
898 struct smb2_query_directory_req {
899 	struct smb2_hdr hdr;
900 	__le16 StructureSize; /* Must be 33 */
901 	__u8   FileInformationClass;
902 	__u8   Flags;
903 	__le32 FileIndex;
904 	__u64  PersistentFileId;
905 	__u64  VolatileFileId;
906 	__le16 FileNameOffset;
907 	__le16 FileNameLength;
908 	__le32 OutputBufferLength;
909 	__u8   Buffer[];
910 } __packed;
911 
912 struct smb2_query_directory_rsp {
913 	struct smb2_hdr hdr;
914 	__le16 StructureSize; /* Must be 9 */
915 	__le16 OutputBufferOffset;
916 	__le32 OutputBufferLength;
917 	__u8   Buffer[];
918 } __packed;
919 
920 /* DeviceType Flags */
921 #define FILE_DEVICE_CD_ROM              0x00000002
922 #define FILE_DEVICE_CD_ROM_FILE_SYSTEM  0x00000003
923 #define FILE_DEVICE_DFS                 0x00000006
924 #define FILE_DEVICE_DISK                0x00000007
925 #define FILE_DEVICE_DISK_FILE_SYSTEM    0x00000008
926 #define FILE_DEVICE_FILE_SYSTEM         0x00000009
927 #define FILE_DEVICE_NAMED_PIPE          0x00000011
928 #define FILE_DEVICE_NETWORK             0x00000012
929 #define FILE_DEVICE_NETWORK_FILE_SYSTEM 0x00000014
930 #define FILE_DEVICE_NULL                0x00000015
931 #define FILE_DEVICE_PARALLEL_PORT       0x00000016
932 #define FILE_DEVICE_PRINTER             0x00000018
933 #define FILE_DEVICE_SERIAL_PORT         0x0000001b
934 #define FILE_DEVICE_STREAMS             0x0000001e
935 #define FILE_DEVICE_TAPE                0x0000001f
936 #define FILE_DEVICE_TAPE_FILE_SYSTEM    0x00000020
937 #define FILE_DEVICE_VIRTUAL_DISK        0x00000024
938 #define FILE_DEVICE_NETWORK_REDIRECTOR  0x00000028
939 
940 /* Device Characteristics */
941 #define FILE_REMOVABLE_MEDIA			0x00000001
942 #define FILE_READ_ONLY_DEVICE			0x00000002
943 #define FILE_FLOPPY_DISKETTE			0x00000004
944 #define FILE_WRITE_ONCE_MEDIA			0x00000008
945 #define FILE_REMOTE_DEVICE			0x00000010
946 #define FILE_DEVICE_IS_MOUNTED			0x00000020
947 #define FILE_VIRTUAL_VOLUME			0x00000040
948 #define FILE_DEVICE_SECURE_OPEN			0x00000100
949 #define FILE_CHARACTERISTIC_TS_DEVICE		0x00001000
950 #define FILE_CHARACTERISTIC_WEBDAV_DEVICE	0x00002000
951 #define FILE_PORTABLE_DEVICE			0x00004000
952 #define FILE_DEVICE_ALLOW_APPCONTAINER_TRAVERSAL 0x00020000
953 
954 /*
955  * Maximum number of iovs we need for a set-info request.
956  * The largest one is rename/hardlink
957  * [0] : struct smb2_set_info_req + smb2_file_[rename|link]_info
958  * [1] : path
959  * [2] : compound padding
960  */
961 #define SMB2_SET_INFO_IOV_SIZE 3
962 
963 struct smb2_set_info_req {
964 	struct smb2_hdr hdr;
965 	__le16 StructureSize; /* Must be 33 */
966 	__u8   InfoType;
967 	__u8   FileInfoClass;
968 	__le32 BufferLength;
969 	__le16 BufferOffset;
970 	__u16  Reserved;
971 	__le32 AdditionalInformation;
972 	__u64  PersistentFileId;
973 	__u64  VolatileFileId;
974 	__u8   Buffer[];
975 } __packed;
976 
977 struct smb2_set_info_rsp {
978 	struct smb2_hdr hdr;
979 	__le16 StructureSize; /* Must be 2 */
980 } __packed;
981 
982 /*
983  * SMB2_NOTIFY  See MS-SMB2 section 2.2.35
984  */
985 /* notify flags */
986 #define SMB2_WATCH_TREE			0x0001
987 
988 /* notify completion filter flags. See MS-FSCC 2.6 and MS-SMB2 2.2.35 */
989 #define FILE_NOTIFY_CHANGE_FILE_NAME		0x00000001
990 #define FILE_NOTIFY_CHANGE_DIR_NAME		0x00000002
991 #define FILE_NOTIFY_CHANGE_ATTRIBUTES		0x00000004
992 #define FILE_NOTIFY_CHANGE_SIZE			0x00000008
993 #define FILE_NOTIFY_CHANGE_LAST_WRITE		0x00000010
994 #define FILE_NOTIFY_CHANGE_LAST_ACCESS		0x00000020
995 #define FILE_NOTIFY_CHANGE_CREATION		0x00000040
996 #define FILE_NOTIFY_CHANGE_EA			0x00000080
997 #define FILE_NOTIFY_CHANGE_SECURITY		0x00000100
998 #define FILE_NOTIFY_CHANGE_STREAM_NAME		0x00000200
999 #define FILE_NOTIFY_CHANGE_STREAM_SIZE		0x00000400
1000 #define FILE_NOTIFY_CHANGE_STREAM_WRITE		0x00000800
1001 
1002 /* SMB2 Notify Action Flags */
1003 #define FILE_ACTION_ADDED                       0x00000001
1004 #define FILE_ACTION_REMOVED                     0x00000002
1005 #define FILE_ACTION_MODIFIED                    0x00000003
1006 #define FILE_ACTION_RENAMED_OLD_NAME            0x00000004
1007 #define FILE_ACTION_RENAMED_NEW_NAME            0x00000005
1008 #define FILE_ACTION_ADDED_STREAM                0x00000006
1009 #define FILE_ACTION_REMOVED_STREAM              0x00000007
1010 #define FILE_ACTION_MODIFIED_STREAM             0x00000008
1011 #define FILE_ACTION_REMOVED_BY_DELETE           0x00000009
1012 
1013 struct smb2_change_notify_req {
1014 	struct smb2_hdr hdr;
1015 	__le16	StructureSize;
1016 	__le16	Flags;
1017 	__le32	OutputBufferLength;
1018 	__u64	PersistentFileId; /* opaque endianness */
1019 	__u64	VolatileFileId; /* opaque endianness */
1020 	__le32	CompletionFilter;
1021 	__u32	Reserved;
1022 } __packed;
1023 
1024 struct smb2_change_notify_rsp {
1025 	struct smb2_hdr hdr;
1026 	__le16	StructureSize;  /* Must be 9 */
1027 	__le16	OutputBufferOffset;
1028 	__le32	OutputBufferLength;
1029 	__u8	Buffer[]; /* array of file notify structs */
1030 } __packed;
1031 
1032 /*
1033  * SMB2_SERVER_TO_CLIENT_NOTIFICATION: See MS-SMB2 section 2.2.44
1034  */
1035 
1036 #define SMB2_NOTIFY_SESSION_CLOSED	0x0000
1037 
1038 struct smb2_server_client_notification {
1039 	struct smb2_hdr hdr;
1040 	__le16	StructureSize;
1041 	__u16	Reserved; /* MBZ */
1042 	__le32	NotificationType;
1043 	__u8	NotificationBuffer[4]; /* MBZ */
1044 } __packed;
1045 
1046 /*
1047  * SMB2_CREATE  See MS-SMB2 section 2.2.13
1048  */
1049 /* Oplock levels */
1050 #define SMB2_OPLOCK_LEVEL_NONE		0x00
1051 #define SMB2_OPLOCK_LEVEL_II		0x01
1052 #define SMB2_OPLOCK_LEVEL_EXCLUSIVE	0x08
1053 #define SMB2_OPLOCK_LEVEL_BATCH		0x09
1054 #define SMB2_OPLOCK_LEVEL_LEASE		0xFF
1055 /* Non-spec internal type */
1056 #define SMB2_OPLOCK_LEVEL_NOCHANGE	0x99
1057 
1058 /* Impersonation Levels. See MS-WPO section 9.7 and MSDN-IMPERS */
1059 #define IL_ANONYMOUS		cpu_to_le32(0x00000000)
1060 #define IL_IDENTIFICATION	cpu_to_le32(0x00000001)
1061 #define IL_IMPERSONATION	cpu_to_le32(0x00000002)
1062 #define IL_DELEGATE		cpu_to_le32(0x00000003)
1063 
1064 /* File Attributes */
1065 #define FILE_ATTRIBUTE_READONLY			0x00000001
1066 #define FILE_ATTRIBUTE_HIDDEN			0x00000002
1067 #define FILE_ATTRIBUTE_SYSTEM			0x00000004
1068 #define FILE_ATTRIBUTE_DIRECTORY		0x00000010
1069 #define FILE_ATTRIBUTE_ARCHIVE			0x00000020
1070 #define FILE_ATTRIBUTE_NORMAL			0x00000080
1071 #define FILE_ATTRIBUTE_TEMPORARY		0x00000100
1072 #define FILE_ATTRIBUTE_SPARSE_FILE		0x00000200
1073 #define FILE_ATTRIBUTE_REPARSE_POINT		0x00000400
1074 #define FILE_ATTRIBUTE_COMPRESSED		0x00000800
1075 #define FILE_ATTRIBUTE_OFFLINE			0x00001000
1076 #define FILE_ATTRIBUTE_NOT_CONTENT_INDEXED	0x00002000
1077 #define FILE_ATTRIBUTE_ENCRYPTED		0x00004000
1078 #define FILE_ATTRIBUTE_INTEGRITY_STREAM		0x00008000
1079 #define FILE_ATTRIBUTE_NO_SCRUB_DATA		0x00020000
1080 #define FILE_ATTRIBUTE__MASK			0x00007FB7
1081 
1082 #define FILE_ATTRIBUTE_READONLY_LE              cpu_to_le32(0x00000001)
1083 #define FILE_ATTRIBUTE_HIDDEN_LE		cpu_to_le32(0x00000002)
1084 #define FILE_ATTRIBUTE_SYSTEM_LE		cpu_to_le32(0x00000004)
1085 #define FILE_ATTRIBUTE_DIRECTORY_LE		cpu_to_le32(0x00000010)
1086 #define FILE_ATTRIBUTE_ARCHIVE_LE		cpu_to_le32(0x00000020)
1087 #define FILE_ATTRIBUTE_NORMAL_LE		cpu_to_le32(0x00000080)
1088 #define FILE_ATTRIBUTE_TEMPORARY_LE		cpu_to_le32(0x00000100)
1089 #define FILE_ATTRIBUTE_SPARSE_FILE_LE		cpu_to_le32(0x00000200)
1090 #define FILE_ATTRIBUTE_REPARSE_POINT_LE		cpu_to_le32(0x00000400)
1091 #define FILE_ATTRIBUTE_COMPRESSED_LE		cpu_to_le32(0x00000800)
1092 #define FILE_ATTRIBUTE_OFFLINE_LE		cpu_to_le32(0x00001000)
1093 #define FILE_ATTRIBUTE_NOT_CONTENT_INDEXED_LE	cpu_to_le32(0x00002000)
1094 #define FILE_ATTRIBUTE_ENCRYPTED_LE		cpu_to_le32(0x00004000)
1095 #define FILE_ATTRIBUTE_INTEGRITY_STREAM_LE	cpu_to_le32(0x00008000)
1096 #define FILE_ATTRIBUTE_NO_SCRUB_DATA_LE		cpu_to_le32(0x00020000)
1097 #define FILE_ATTRIBUTE_MASK_LE			cpu_to_le32(0x00007FB7)
1098 
1099 /* Desired Access Flags */
1100 #define FILE_READ_DATA_LE		cpu_to_le32(0x00000001)
1101 #define FILE_LIST_DIRECTORY_LE		cpu_to_le32(0x00000001)
1102 #define FILE_WRITE_DATA_LE		cpu_to_le32(0x00000002)
1103 #define FILE_APPEND_DATA_LE		cpu_to_le32(0x00000004)
1104 #define FILE_ADD_SUBDIRECTORY_LE	cpu_to_le32(0x00000004)
1105 #define FILE_READ_EA_LE			cpu_to_le32(0x00000008)
1106 #define FILE_WRITE_EA_LE		cpu_to_le32(0x00000010)
1107 #define FILE_EXECUTE_LE			cpu_to_le32(0x00000020)
1108 #define FILE_DELETE_CHILD_LE		cpu_to_le32(0x00000040)
1109 #define FILE_READ_ATTRIBUTES_LE		cpu_to_le32(0x00000080)
1110 #define FILE_WRITE_ATTRIBUTES_LE	cpu_to_le32(0x00000100)
1111 #define FILE_DELETE_LE			cpu_to_le32(0x00010000)
1112 #define FILE_READ_CONTROL_LE		cpu_to_le32(0x00020000)
1113 #define FILE_WRITE_DAC_LE		cpu_to_le32(0x00040000)
1114 #define FILE_WRITE_OWNER_LE		cpu_to_le32(0x00080000)
1115 #define FILE_SYNCHRONIZE_LE		cpu_to_le32(0x00100000)
1116 #define FILE_ACCESS_SYSTEM_SECURITY_LE	cpu_to_le32(0x01000000)
1117 #define FILE_MAXIMAL_ACCESS_LE		cpu_to_le32(0x02000000)
1118 #define FILE_GENERIC_ALL_LE		cpu_to_le32(0x10000000)
1119 #define FILE_GENERIC_EXECUTE_LE		cpu_to_le32(0x20000000)
1120 #define FILE_GENERIC_WRITE_LE		cpu_to_le32(0x40000000)
1121 #define FILE_GENERIC_READ_LE		cpu_to_le32(0x80000000)
1122 #define DESIRED_ACCESS_MASK             cpu_to_le32(0xF21F01FF)
1123 
1124 
1125 #define FILE_READ_DESIRED_ACCESS_LE     (FILE_READ_DATA_LE        |	\
1126 					 FILE_READ_EA_LE          |     \
1127 					 FILE_GENERIC_READ_LE)
1128 #define FILE_WRITE_DESIRE_ACCESS_LE     (FILE_WRITE_DATA_LE       |	\
1129 					 FILE_APPEND_DATA_LE      |	\
1130 					 FILE_WRITE_EA_LE         |	\
1131 					 FILE_WRITE_ATTRIBUTES_LE |	\
1132 					 FILE_GENERIC_WRITE_LE)
1133 
1134 /* ShareAccess Flags */
1135 #define FILE_SHARE_READ_LE		cpu_to_le32(0x00000001)
1136 #define FILE_SHARE_WRITE_LE		cpu_to_le32(0x00000002)
1137 #define FILE_SHARE_DELETE_LE		cpu_to_le32(0x00000004)
1138 #define FILE_SHARE_ALL_LE		cpu_to_le32(0x00000007)
1139 
1140 /* CreateDisposition Flags */
1141 #define FILE_SUPERSEDE_LE		cpu_to_le32(0x00000000)
1142 #define FILE_OPEN_LE			cpu_to_le32(0x00000001)
1143 #define FILE_CREATE_LE			cpu_to_le32(0x00000002)
1144 #define	FILE_OPEN_IF_LE			cpu_to_le32(0x00000003)
1145 #define FILE_OVERWRITE_LE		cpu_to_le32(0x00000004)
1146 #define FILE_OVERWRITE_IF_LE		cpu_to_le32(0x00000005)
1147 #define FILE_CREATE_MASK_LE             cpu_to_le32(0x00000007)
1148 
1149 #define FILE_READ_RIGHTS (FILE_READ_DATA | FILE_READ_EA \
1150 			| FILE_READ_ATTRIBUTES)
1151 #define FILE_WRITE_RIGHTS (FILE_WRITE_DATA | FILE_APPEND_DATA \
1152 			| FILE_WRITE_EA | FILE_WRITE_ATTRIBUTES)
1153 #define FILE_EXEC_RIGHTS (FILE_EXECUTE)
1154 
1155 /* CreateOptions Flags */
1156 #define FILE_DIRECTORY_FILE_LE		cpu_to_le32(0x00000001)
1157 /* same as #define CREATE_NOT_FILE_LE	cpu_to_le32(0x00000001) */
1158 #define FILE_WRITE_THROUGH_LE		cpu_to_le32(0x00000002)
1159 #define FILE_SEQUENTIAL_ONLY_LE		cpu_to_le32(0x00000004)
1160 #define FILE_NO_INTERMEDIATE_BUFFERING_LE cpu_to_le32(0x00000008)
1161 /* FILE_SYNCHRONOUS_IO_ALERT_LE		cpu_to_le32(0x00000010) should be zero, ignored */
1162 /* FILE_SYNCHRONOUS_IO_NONALERT		cpu_to_le32(0x00000020) should be zero, ignored */
1163 #define FILE_NON_DIRECTORY_FILE_LE	cpu_to_le32(0x00000040)
1164 #define FILE_COMPLETE_IF_OPLOCKED_LE	cpu_to_le32(0x00000100)
1165 #define FILE_NO_EA_KNOWLEDGE_LE		cpu_to_le32(0x00000200)
1166 /* FILE_OPEN_REMOTE_INSTANCE		cpu_to_le32(0x00000400) should be zero, ignored */
1167 #define FILE_RANDOM_ACCESS_LE		cpu_to_le32(0x00000800)
1168 #define FILE_DELETE_ON_CLOSE_LE		cpu_to_le32(0x00001000) /* MBZ */
1169 #define FILE_OPEN_BY_FILE_ID_LE		cpu_to_le32(0x00002000)
1170 #define FILE_OPEN_FOR_BACKUP_INTENT_LE	cpu_to_le32(0x00004000)
1171 #define FILE_NO_COMPRESSION_LE		cpu_to_le32(0x00008000)
1172 /* FILE_OPEN_REQUIRING_OPLOCK		cpu_to_le32(0x00010000) should be zero, ignored */
1173 /* FILE_DISALLOW_EXCLUSIVE		cpu_to_le32(0x00020000) should be zero, ignored */
1174 /* FILE_RESERVE_OPFILTER		cpu_to_le32(0x00100000) MBZ */
1175 #define FILE_OPEN_REPARSE_POINT_LE	cpu_to_le32(0x00200000)
1176 #define FILE_OPEN_NO_RECALL_LE		cpu_to_le32(0x00400000)
1177 /* #define FILE_OPEN_FOR_FREE_SPACE_QUERY cpu_to_le32(0x00800000) should be zero, ignored */
1178 #define CREATE_OPTIONS_MASK_LE          cpu_to_le32(0x00FFFFFF)
1179 
1180 #define FILE_READ_RIGHTS_LE (FILE_READ_DATA_LE | FILE_READ_EA_LE \
1181 			| FILE_READ_ATTRIBUTES_LE)
1182 #define FILE_WRITE_RIGHTS_LE (FILE_WRITE_DATA_LE | FILE_APPEND_DATA_LE \
1183 			| FILE_WRITE_EA_LE | FILE_WRITE_ATTRIBUTES_LE)
1184 #define FILE_EXEC_RIGHTS_LE (FILE_EXECUTE_LE)
1185 
1186 /* Create Context Values */
1187 #define SMB2_CREATE_EA_BUFFER			"ExtA" /* extended attributes */
1188 #define SMB2_CREATE_SD_BUFFER			"SecD" /* security descriptor */
1189 #define SMB2_CREATE_DURABLE_HANDLE_REQUEST	"DHnQ"
1190 #define SMB2_CREATE_DURABLE_HANDLE_RECONNECT	"DHnC"
1191 #define SMB2_CREATE_ALLOCATION_SIZE		"AlSi"
1192 #define SMB2_CREATE_QUERY_MAXIMAL_ACCESS_REQUEST "MxAc"
1193 #define SMB2_CREATE_TIMEWARP_REQUEST		"TWrp"
1194 #define SMB2_CREATE_QUERY_ON_DISK_ID		"QFid"
1195 #define SMB2_CREATE_REQUEST_LEASE		"RqLs"
1196 #define SMB2_CREATE_DURABLE_HANDLE_REQUEST_V2	"DH2Q"
1197 #define SMB2_CREATE_DURABLE_HANDLE_RECONNECT_V2	"DH2C"
1198 #define SMB2_CREATE_TAG_POSIX		"\x93\xAD\x25\x50\x9C\xB4\x11\xE7\xB4\x23\x83\xDE\x96\x8B\xCD\x7C"
1199 #define SMB2_CREATE_APP_INSTANCE_ID	"\x45\xBC\xA6\x6A\xEF\xA7\xF7\x4A\x90\x08\xFA\x46\x2E\x14\x4D\x74"
1200 #define SMB2_CREATE_APP_INSTANCE_VERSION "\xB9\x82\xD0\xB7\x3B\x56\x07\x4F\xA0\x7B\x52\x4A\x81\x16\xA0\x10"
1201 #define SVHDX_OPEN_DEVICE_CONTEXT	"\x9C\xCB\xCF\x9E\x04\xC1\xE6\x43\x98\x0E\x15\x8D\xA1\xF6\xEC\x83"
1202 #define SMB2_CREATE_TAG_AAPL			"AAPL"
1203 
1204 /* Flag (SMB3 open response) values */
1205 #define SMB2_CREATE_FLAG_REPARSEPOINT 0x01
1206 
1207 struct create_context {
1208 	/* New members must be added within the struct_group() macro below. */
1209 	__struct_group(create_context_hdr, hdr, __packed,
1210 		__le32 Next;
1211 		__le16 NameOffset;
1212 		__le16 NameLength;
1213 		__le16 Reserved;
1214 		__le16 DataOffset;
1215 		__le32 DataLength;
1216 	);
1217 	__u8 Buffer[];
1218 } __packed;
1219 static_assert(offsetof(struct create_context, Buffer) == sizeof(struct create_context_hdr),
1220 	      "struct member likely outside of __struct_group()");
1221 
1222 struct smb2_create_req {
1223 	struct smb2_hdr hdr;
1224 	__le16 StructureSize;	/* Must be 57 */
1225 	__u8   SecurityFlags;
1226 	__u8   RequestedOplockLevel;
1227 	__le32 ImpersonationLevel;
1228 	__le64 SmbCreateFlags;
1229 	__le64 Reserved;
1230 	__le32 DesiredAccess;
1231 	__le32 FileAttributes;
1232 	__le32 ShareAccess;
1233 	__le32 CreateDisposition;
1234 	__le32 CreateOptions;
1235 	__le16 NameOffset;
1236 	__le16 NameLength;
1237 	__le32 CreateContextsOffset;
1238 	__le32 CreateContextsLength;
1239 	__u8   Buffer[];
1240 } __packed;
1241 
1242 struct smb2_create_rsp {
1243 	struct smb2_hdr hdr;
1244 	__le16 StructureSize;	/* Must be 89 */
1245 	__u8   OplockLevel;
1246 	__u8   Flags;  /* 0x01 if reparse point */
1247 	__le32 CreateAction;
1248 	__le64 CreationTime;
1249 	__le64 LastAccessTime;
1250 	__le64 LastWriteTime;
1251 	__le64 ChangeTime;
1252 	__le64 AllocationSize;
1253 	__le64 EndofFile;
1254 	__le32 FileAttributes;
1255 	__le32 Reserved2;
1256 	__u64  PersistentFileId;
1257 	__u64  VolatileFileId;
1258 	__le32 CreateContextsOffset;
1259 	__le32 CreateContextsLength;
1260 	__u8   Buffer[];
1261 } __packed;
1262 
1263 struct create_posix {
1264 	struct create_context_hdr ccontext;
1265 	__u8    Name[16];
1266 	__le32  Mode;
1267 	__u32   Reserved;
1268 } __packed;
1269 
1270 /* See MS-SMB2 2.2.13.2.3 and MS-SMB2 2.2.13.2.4 */
1271 struct create_durable {
1272 	struct create_context_hdr ccontext;
1273 	__u8   Name[8];
1274 	union {
1275 		__u8  Reserved[16];
1276 		struct {
1277 			__u64 PersistentFileId;
1278 			__u64 VolatileFileId;
1279 		} Fid;
1280 	} Data;
1281 } __packed;
1282 
1283 /* See MS-SMB2 2.2.13.2.5 */
1284 struct create_mxac_req {
1285 	struct create_context_hdr ccontext;
1286 	__u8   Name[8];
1287 	__le64 Timestamp;
1288 } __packed;
1289 
1290 /* See MS-SMB2 2.2.14.2.5 */
1291 struct create_mxac_rsp {
1292 	struct create_context_hdr ccontext;
1293 	__u8   Name[8];
1294 	__le32 QueryStatus;
1295 	__le32 MaximalAccess;
1296 } __packed;
1297 
1298 #define SMB2_LEASE_NONE_LE			cpu_to_le32(0x00)
1299 #define SMB2_LEASE_READ_CACHING_LE		cpu_to_le32(0x01)
1300 #define SMB2_LEASE_HANDLE_CACHING_LE		cpu_to_le32(0x02)
1301 #define SMB2_LEASE_WRITE_CACHING_LE		cpu_to_le32(0x04)
1302 
1303 #define SMB2_LEASE_FLAG_BREAK_IN_PROGRESS_LE	cpu_to_le32(0x02)
1304 #define SMB2_LEASE_FLAG_PARENT_LEASE_KEY_SET_LE	cpu_to_le32(0x04)
1305 
1306 #define SMB2_LEASE_KEY_SIZE			16
1307 
1308 /* See MS-SMB2 2.2.13.2.8 */
1309 struct lease_context {
1310 	__u8 LeaseKey[SMB2_LEASE_KEY_SIZE];
1311 	__le32 LeaseState;
1312 	__le32 LeaseFlags;
1313 	__le64 LeaseDuration;
1314 } __packed;
1315 
1316 /* See MS-SMB2 2.2.13.2.10 */
1317 struct lease_context_v2 {
1318 	__u8 LeaseKey[SMB2_LEASE_KEY_SIZE];
1319 	__le32 LeaseState;
1320 	__le32 LeaseFlags;
1321 	__le64 LeaseDuration;
1322 	__u8 ParentLeaseKey[SMB2_LEASE_KEY_SIZE];
1323 	__le16 Epoch;
1324 	__le16 Reserved;
1325 } __packed;
1326 
1327 struct create_lease {
1328 	struct create_context_hdr ccontext;
1329 	__u8   Name[8];
1330 	struct lease_context lcontext;
1331 } __packed;
1332 
1333 struct create_lease_v2 {
1334 	struct create_context_hdr ccontext;
1335 	__u8   Name[8];
1336 	struct lease_context_v2 lcontext;
1337 	__u8   Pad[4];
1338 } __packed;
1339 
1340 /* See MS-SMB2 2.2.14.2.9 */
1341 struct create_disk_id_rsp {
1342 	struct create_context_hdr ccontext;
1343 	__u8   Name[8];
1344 	__le64 DiskFileId;
1345 	__le64 VolumeId;
1346 	__u8  Reserved[16];
1347 } __packed;
1348 
1349 /* See MS-SMB2 2.2.13.2.13 */
1350 struct create_app_inst_id {
1351 	struct create_context_hdr ccontext;
1352 	__u8 Name[16];
1353 	__le32 StructureSize; /* Must be 20 */
1354 	__u16 Reserved;
1355 	__u8 AppInstanceId[16];
1356 } __packed;
1357 
1358 /* See MS-SMB2 2.2.13.2.15 */
1359 struct create_app_inst_id_vers {
1360 	struct create_context_hdr ccontext;
1361 	__u8 Name[16];
1362 	__le32 StructureSize; /* Must be 24 */
1363 	__u16 Reserved;
1364 	__u32 Padding;
1365 	__le64 AppInstanceVersionHigh;
1366 	__le64 AppInstanceVersionLow;
1367 } __packed;
1368 
1369 /* See MS-SMB2 2.2.31 and 2.2.32 */
1370 struct smb2_ioctl_req {
1371 	struct smb2_hdr hdr;
1372 	__le16 StructureSize; /* Must be 57 */
1373 	__le16 Reserved; /* offset from start of SMB2 header to write data */
1374 	__le32 CtlCode;
1375 	__u64  PersistentFileId;
1376 	__u64  VolatileFileId;
1377 	__le32 InputOffset; /* Reserved MBZ */
1378 	__le32 InputCount;
1379 	__le32 MaxInputResponse;
1380 	__le32 OutputOffset;
1381 	__le32 OutputCount;
1382 	__le32 MaxOutputResponse;
1383 	__le32 Flags;
1384 	__le32 Reserved2;
1385 	__u8   Buffer[];
1386 } __packed;
1387 
1388 struct smb2_ioctl_rsp {
1389 	struct smb2_hdr hdr;
1390 	__le16 StructureSize; /* Must be 49 */
1391 	__le16 Reserved;
1392 	__le32 CtlCode;
1393 	__u64  PersistentFileId;
1394 	__u64  VolatileFileId;
1395 	__le32 InputOffset; /* Reserved MBZ */
1396 	__le32 InputCount;
1397 	__le32 OutputOffset;
1398 	__le32 OutputCount;
1399 	__le32 Flags;
1400 	__le32 Reserved2;
1401 	__u8   Buffer[];
1402 } __packed;
1403 
1404 /* this goes in the ioctl buffer when doing FSCTL_SET_ZERO_DATA */
1405 struct file_zero_data_information {
1406 	__le64	FileOffset;
1407 	__le64	BeyondFinalZero;
1408 } __packed;
1409 
1410 /* See MS-FSCC 2.3.7 */
1411 struct duplicate_extents_to_file {
1412 	__u64 PersistentFileHandle; /* source file handle, opaque endianness */
1413 	__u64 VolatileFileHandle;
1414 	__le64 SourceFileOffset;
1415 	__le64 TargetFileOffset;
1416 	__le64 ByteCount;  /* Bytes to be copied */
1417 } __packed;
1418 
1419 /* See MS-FSCC 2.3.8 */
1420 #define DUPLICATE_EXTENTS_DATA_EX_SOURCE_ATOMIC	0x00000001
1421 struct duplicate_extents_to_file_ex {
1422 	__u64 PersistentFileHandle; /* source file handle, opaque endianness */
1423 	__u64 VolatileFileHandle;
1424 	__le64 SourceFileOffset;
1425 	__le64 TargetFileOffset;
1426 	__le64 ByteCount;  /* Bytes to be copied */
1427 	__le32 Flags;
1428 	__le32 Reserved;
1429 } __packed;
1430 
1431 
1432 /* See MS-FSCC 2.3.20 */
1433 struct fsctl_get_integrity_information_rsp {
1434 	__le16	ChecksumAlgorithm;
1435 	__le16	Reserved;
1436 	__le32	Flags;
1437 	__le32	ChecksumChunkSizeInBytes;
1438 	__le32	ClusterSizeInBytes;
1439 } __packed;
1440 
1441 /* See MS-FSCC 2.3.55 */
1442 struct fsctl_query_file_regions_req {
1443 	__le64	FileOffset;
1444 	__le64	Length;
1445 	__le32	DesiredUsage;
1446 	__le32	Reserved;
1447 } __packed;
1448 
1449 /* DesiredUsage flags see MS-FSCC 2.3.56.1 */
1450 #define FILE_USAGE_INVALID_RANGE	0x00000000
1451 #define FILE_USAGE_VALID_CACHED_DATA	0x00000001
1452 #define FILE_USAGE_NONCACHED_DATA	0x00000002
1453 
1454 struct file_region_info {
1455 	__le64	FileOffset;
1456 	__le64	Length;
1457 	__le32	DesiredUsage;
1458 	__le32	Reserved;
1459 } __packed;
1460 
1461 /* See MS-FSCC 2.3.56 */
1462 struct fsctl_query_file_region_rsp {
1463 	__le32 Flags;
1464 	__le32 TotalRegionEntryCount;
1465 	__le32 RegionEntryCount;
1466 	__u32  Reserved;
1467 	struct  file_region_info Regions[];
1468 } __packed;
1469 
1470 /* See MS-FSCC 2.3.58 */
1471 struct fsctl_query_on_disk_vol_info_rsp {
1472 	__le64	DirectoryCount;
1473 	__le64	FileCount;
1474 	__le16	FsFormatMajVersion;
1475 	__le16	FsFormatMinVersion;
1476 	__u8	FsFormatName[24];
1477 	__le64	FormatTime;
1478 	__le64	LastUpdateTime;
1479 	__u8	CopyrightInfo[68];
1480 	__u8	AbstractInfo[68];
1481 	__u8	FormatImplInfo[68];
1482 	__u8	LastModifyImplInfo[68];
1483 } __packed;
1484 
1485 /* See MS-FSCC 2.3.73 */
1486 struct fsctl_set_integrity_information_req {
1487 	__le16	ChecksumAlgorithm;
1488 	__le16	Reserved;
1489 	__le32	Flags;
1490 } __packed;
1491 
1492 /* See MS-FSCC 2.3.75 */
1493 struct fsctl_set_integrity_info_ex_req {
1494 	__u8	EnableIntegrity;
1495 	__u8	KeepState;
1496 	__u16	Reserved;
1497 	__le32	Flags;
1498 	__u8	Version;
1499 	__u8	Reserved2[7];
1500 } __packed;
1501 
1502 /* Integrity ChecksumAlgorithm choices for above */
1503 #define	CHECKSUM_TYPE_NONE	0x0000
1504 #define	CHECKSUM_TYPE_CRC64	0x0002
1505 #define	CHECKSUM_TYPE_UNCHANGED	0xFFFF	/* set only */
1506 
1507 /* Integrity flags for above */
1508 #define FSCTL_INTEGRITY_FLAG_CHECKSUM_ENFORCEMENT_OFF	0x00000001
1509 
1510 /* Reparse structures - see MS-FSCC 2.1.2 */
1511 
1512 /* struct fsctl_reparse_info_req is empty, only response structs (see below) */
1513 struct reparse_data_buffer {
1514 	__le32	ReparseTag;
1515 	__le16	ReparseDataLength;
1516 	__u16	Reserved;
1517 	__u8	DataBuffer[]; /* Variable Length */
1518 } __packed;
1519 
1520 struct reparse_guid_data_buffer {
1521 	__le32	ReparseTag;
1522 	__le16	ReparseDataLength;
1523 	__u16	Reserved;
1524 	__u8	ReparseGuid[16];
1525 	__u8	DataBuffer[]; /* Variable Length */
1526 } __packed;
1527 
1528 struct reparse_mount_point_data_buffer {
1529 	__le32	ReparseTag;
1530 	__le16	ReparseDataLength;
1531 	__u16	Reserved;
1532 	__le16	SubstituteNameOffset;
1533 	__le16	SubstituteNameLength;
1534 	__le16	PrintNameOffset;
1535 	__le16	PrintNameLength;
1536 	__u8	PathBuffer[]; /* Variable Length */
1537 } __packed;
1538 
1539 #define SYMLINK_FLAG_RELATIVE 0x00000001
1540 
1541 struct reparse_symlink_data_buffer {
1542 	__le32	ReparseTag;
1543 	__le16	ReparseDataLength;
1544 	__u16	Reserved;
1545 	__le16	SubstituteNameOffset;
1546 	__le16	SubstituteNameLength;
1547 	__le16	PrintNameOffset;
1548 	__le16	PrintNameLength;
1549 	__le32	Flags;
1550 	__u8	PathBuffer[]; /* Variable Length */
1551 } __packed;
1552 
1553 /* See MS-FSCC 2.1.2.6 and cifspdu.h for struct reparse_posix_data */
1554 
1555 struct validate_negotiate_info_req {
1556 	__le32 Capabilities;
1557 	__u8   Guid[SMB2_CLIENT_GUID_SIZE];
1558 	__le16 SecurityMode;
1559 	__le16 DialectCount;
1560 	__le16 Dialects[4]; /* BB expand this if autonegotiate > 4 dialects */
1561 } __packed;
1562 
1563 struct validate_negotiate_info_rsp {
1564 	__le32 Capabilities;
1565 	__u8   Guid[SMB2_CLIENT_GUID_SIZE];
1566 	__le16 SecurityMode;
1567 	__le16 Dialect; /* Dialect in use for the connection */
1568 } __packed;
1569 
1570 
1571 /* Possible InfoType values */
1572 #define SMB2_O_INFO_FILE	0x01
1573 #define SMB2_O_INFO_FILESYSTEM	0x02
1574 #define SMB2_O_INFO_SECURITY	0x03
1575 #define SMB2_O_INFO_QUOTA	0x04
1576 
1577 /* SMB2 Query Info see MS-SMB2 (2.2.37) or MS-DTYP */
1578 
1579 /* List of QUERY INFO levels (those also valid for QUERY_DIR are noted below */
1580 #define FILE_DIRECTORY_INFORMATION	1	/* also for QUERY_DIR */
1581 #define FILE_FULL_DIRECTORY_INFORMATION 2	/* also for QUERY_DIR */
1582 #define FILE_BOTH_DIRECTORY_INFORMATION 3	/* also for QUERY_DIR */
1583 #define FILE_BASIC_INFORMATION		4
1584 #define FILE_STANDARD_INFORMATION	5
1585 #define FILE_INTERNAL_INFORMATION	6
1586 #define FILE_EA_INFORMATION	        7
1587 #define FILE_ACCESS_INFORMATION		8
1588 #define FILE_NAME_INFORMATION		9
1589 #define FILE_RENAME_INFORMATION		10
1590 #define FILE_LINK_INFORMATION		11
1591 #define FILE_NAMES_INFORMATION		12	/* also for QUERY_DIR */
1592 #define FILE_DISPOSITION_INFORMATION	13
1593 #define FILE_POSITION_INFORMATION	14
1594 #define FILE_FULL_EA_INFORMATION	15
1595 #define FILE_MODE_INFORMATION		16
1596 #define FILE_ALIGNMENT_INFORMATION	17
1597 #define FILE_ALL_INFORMATION		18
1598 #define FILE_ALLOCATION_INFORMATION	19
1599 #define FILE_END_OF_FILE_INFORMATION	20
1600 #define FILE_ALTERNATE_NAME_INFORMATION 21
1601 #define FILE_STREAM_INFORMATION		22
1602 #define FILE_PIPE_INFORMATION		23
1603 #define FILE_PIPE_LOCAL_INFORMATION	24
1604 #define FILE_PIPE_REMOTE_INFORMATION	25
1605 #define FILE_MAILSLOT_QUERY_INFORMATION 26
1606 #define FILE_MAILSLOT_SET_INFORMATION	27
1607 #define FILE_COMPRESSION_INFORMATION	28
1608 #define FILE_OBJECT_ID_INFORMATION	29
1609 /* Number 30 not defined in documents */
1610 #define FILE_MOVE_CLUSTER_INFORMATION	31
1611 #define FILE_QUOTA_INFORMATION		32
1612 #define FILE_REPARSE_POINT_INFORMATION	33
1613 #define FILE_NETWORK_OPEN_INFORMATION	34
1614 #define FILE_ATTRIBUTE_TAG_INFORMATION	35
1615 #define FILE_TRACKING_INFORMATION	36
1616 #define FILEID_BOTH_DIRECTORY_INFORMATION 37	/* also for QUERY_DIR */
1617 #define FILEID_FULL_DIRECTORY_INFORMATION 38	/* also for QUERY_DIR */
1618 #define FILE_VALID_DATA_LENGTH_INFORMATION 39
1619 #define FILE_SHORT_NAME_INFORMATION	40
1620 #define FILE_SFIO_RESERVE_INFORMATION	44
1621 #define FILE_SFIO_VOLUME_INFORMATION	45
1622 #define FILE_HARD_LINK_INFORMATION	46
1623 #define FILE_NORMALIZED_NAME_INFORMATION 48
1624 #define FILEID_GLOBAL_TX_DIRECTORY_INFORMATION 50
1625 #define FILE_STANDARD_LINK_INFORMATION	54
1626 #define FILE_ID_INFORMATION		59
1627 #define FILE_ID_EXTD_DIRECTORY_INFORMATION 60	/* also for QUERY_DIR */
1628 /* Used for Query Info and Find File POSIX Info for SMB3.1.1 and SMB1 */
1629 #define SMB_FIND_FILE_POSIX_INFO	0x064
1630 
1631 /* Security info type additionalinfo flags. */
1632 #define OWNER_SECINFO   0x00000001
1633 #define GROUP_SECINFO   0x00000002
1634 #define DACL_SECINFO   0x00000004
1635 #define SACL_SECINFO   0x00000008
1636 #define LABEL_SECINFO   0x00000010
1637 #define ATTRIBUTE_SECINFO   0x00000020
1638 #define SCOPE_SECINFO   0x00000040
1639 #define BACKUP_SECINFO   0x00010000
1640 #define UNPROTECTED_SACL_SECINFO   0x10000000
1641 #define UNPROTECTED_DACL_SECINFO   0x20000000
1642 #define PROTECTED_SACL_SECINFO   0x40000000
1643 #define PROTECTED_DACL_SECINFO   0x80000000
1644 
1645 /* Flags used for FileFullEAinfo */
1646 #define SL_RESTART_SCAN		0x00000001
1647 #define SL_RETURN_SINGLE_ENTRY	0x00000002
1648 #define SL_INDEX_SPECIFIED	0x00000004
1649 
1650 struct smb2_query_info_req {
1651 	struct smb2_hdr hdr;
1652 	__le16 StructureSize; /* Must be 41 */
1653 	__u8   InfoType;
1654 	__u8   FileInfoClass;
1655 	__le32 OutputBufferLength;
1656 	__le16 InputBufferOffset;
1657 	__u16  Reserved;
1658 	__le32 InputBufferLength;
1659 	__le32 AdditionalInformation;
1660 	__le32 Flags;
1661 	__u64  PersistentFileId;
1662 	__u64  VolatileFileId;
1663 	__u8   Buffer[];
1664 } __packed;
1665 
1666 struct smb2_query_info_rsp {
1667 	struct smb2_hdr hdr;
1668 	__le16 StructureSize; /* Must be 9 */
1669 	__le16 OutputBufferOffset;
1670 	__le32 OutputBufferLength;
1671 	__u8   Buffer[];
1672 } __packed;
1673 
1674 /*
1675  *	PDU query infolevel structure definitions
1676  */
1677 
1678 /* See MS-FSCC 2.3.52 */
1679 struct file_allocated_range_buffer {
1680 	__le64	file_offset;
1681 	__le64	length;
1682 } __packed;
1683 
1684 struct smb2_file_internal_info {
1685 	__le64 IndexNumber;
1686 } __packed; /* level 6 Query */
1687 
1688 struct smb2_file_rename_info { /* encoding of request for level 10 */
1689 	__u8   ReplaceIfExists; /* 1 = replace existing target with new */
1690 				/* 0 = fail if target already exists */
1691 	__u8   Reserved[7];
1692 	__u64  RootDirectory;  /* MBZ for network operations (why says spec?) */
1693 	__le32 FileNameLength;
1694 	char   FileName[];     /* New name to be assigned */
1695 	/* padding - overall struct size must be >= 24 so filename + pad >= 6 */
1696 } __packed; /* level 10 Set */
1697 
1698 struct smb2_file_link_info { /* encoding of request for level 11 */
1699 	__u8   ReplaceIfExists; /* 1 = replace existing link with new */
1700 				/* 0 = fail if link already exists */
1701 	__u8   Reserved[7];
1702 	__u64  RootDirectory;  /* MBZ for network operations (why says spec?) */
1703 	__le32 FileNameLength;
1704 	char   FileName[];     /* Name to be assigned to new link */
1705 } __packed; /* level 11 Set */
1706 
1707 /*
1708  * This level 18, although with struct with same name is different from cifs
1709  * level 0x107. Level 0x107 has an extra u64 between AccessFlags and
1710  * CurrentByteOffset.
1711  */
1712 struct smb2_file_all_info { /* data block encoding of response to level 18 */
1713 	__le64 CreationTime;	/* Beginning of FILE_BASIC_INFO equivalent */
1714 	__le64 LastAccessTime;
1715 	__le64 LastWriteTime;
1716 	__le64 ChangeTime;
1717 	__le32 Attributes;
1718 	__u32  Pad1;		/* End of FILE_BASIC_INFO_INFO equivalent */
1719 	__le64 AllocationSize;	/* Beginning of FILE_STANDARD_INFO equivalent */
1720 	__le64 EndOfFile;	/* size ie offset to first free byte in file */
1721 	__le32 NumberOfLinks;	/* hard links */
1722 	__u8   DeletePending;
1723 	__u8   Directory;
1724 	__u16  Pad2;		/* End of FILE_STANDARD_INFO equivalent */
1725 	__le64 IndexNumber;
1726 	__le32 EASize;
1727 	__le32 AccessFlags;
1728 	__le64 CurrentByteOffset;
1729 	__le32 Mode;
1730 	__le32 AlignmentRequirement;
1731 	__le32 FileNameLength;
1732 	union {
1733 		char __pad;	/* Legacy structure padding */
1734 		DECLARE_FLEX_ARRAY(char, FileName);
1735 	};
1736 } __packed; /* level 18 Query */
1737 
1738 struct smb2_file_eof_info { /* encoding of request for level 10 */
1739 	__le64 EndOfFile; /* new end of file value */
1740 } __packed; /* level 20 Set */
1741 
1742 /* Level 100 query info */
1743 struct smb311_posix_qinfo {
1744 	__le64 CreationTime;
1745 	__le64 LastAccessTime;
1746 	__le64 LastWriteTime;
1747 	__le64 ChangeTime;
1748 	__le64 EndOfFile;
1749 	__le64 AllocationSize;
1750 	__le32 DosAttributes;
1751 	__le64 Inode;
1752 	__le32 DeviceId;
1753 	__le32 Zero;
1754 	/* beginning of POSIX Create Context Response */
1755 	__le32 HardLinks;
1756 	__le32 ReparseTag;
1757 	__le32 Mode;
1758 	u8     Sids[];
1759 	/*
1760 	 * var sized owner SID
1761 	 * var sized group SID
1762 	 * le32 filenamelength
1763 	 * u8  filename[]
1764 	 */
1765 } __packed;
1766 
1767 /* File System Information Classes */
1768 #define FS_VOLUME_INFORMATION		1 /* Query */
1769 #define FS_LABEL_INFORMATION		2 /* Set */
1770 #define FS_SIZE_INFORMATION		3 /* Query */
1771 #define FS_DEVICE_INFORMATION		4 /* Query */
1772 #define FS_ATTRIBUTE_INFORMATION	5 /* Query */
1773 #define FS_CONTROL_INFORMATION		6 /* Query, Set */
1774 #define FS_FULL_SIZE_INFORMATION	7 /* Query */
1775 #define FS_OBJECT_ID_INFORMATION	8 /* Query, Set */
1776 #define FS_DRIVER_PATH_INFORMATION	9 /* Query */
1777 #define FS_SECTOR_SIZE_INFORMATION	11 /* SMB3 or later. Query */
1778 #define FS_POSIX_INFORMATION		100 /* SMB3.1.1 POSIX. Query */
1779 
1780 struct smb2_fs_full_size_info {
1781 	__le64 TotalAllocationUnits;
1782 	__le64 CallerAvailableAllocationUnits;
1783 	__le64 ActualAvailableAllocationUnits;
1784 	__le32 SectorsPerAllocationUnit;
1785 	__le32 BytesPerSector;
1786 } __packed;
1787 
1788 #define SSINFO_FLAGS_ALIGNED_DEVICE		0x00000001
1789 #define SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE 0x00000002
1790 #define SSINFO_FLAGS_NO_SEEK_PENALTY		0x00000004
1791 #define SSINFO_FLAGS_TRIM_ENABLED		0x00000008
1792 
1793 /* sector size info struct */
1794 struct smb3_fs_ss_info {
1795 	__le32 LogicalBytesPerSector;
1796 	__le32 PhysicalBytesPerSectorForAtomicity;
1797 	__le32 PhysicalBytesPerSectorForPerf;
1798 	__le32 FSEffPhysicalBytesPerSectorForAtomicity;
1799 	__le32 Flags;
1800 	__le32 ByteOffsetForSectorAlignment;
1801 	__le32 ByteOffsetForPartitionAlignment;
1802 } __packed;
1803 
1804 /* File System Control Information */
1805 struct smb2_fs_control_info {
1806 	__le64 FreeSpaceStartFiltering;
1807 	__le64 FreeSpaceThreshold;
1808 	__le64 FreeSpaceStopFiltering;
1809 	__le64 DefaultQuotaThreshold;
1810 	__le64 DefaultQuotaLimit;
1811 	__le32 FileSystemControlFlags;
1812 	__le32 Padding;
1813 } __packed;
1814 
1815 /* volume info struct - see MS-FSCC 2.5.9 */
1816 #define MAX_VOL_LABEL_LEN	32
1817 struct smb3_fs_vol_info {
1818 	__le64	VolumeCreationTime;
1819 	__u32	VolumeSerialNumber;
1820 	__le32	VolumeLabelLength; /* includes trailing null */
1821 	__u8	SupportsObjects; /* True if eg like NTFS, supports objects */
1822 	__u8	Reserved;
1823 	__u8	VolumeLabel[]; /* variable len */
1824 } __packed;
1825 
1826 /* See MS-SMB2 2.2.23 through 2.2.25 */
1827 struct smb2_oplock_break {
1828 	struct smb2_hdr hdr;
1829 	__le16 StructureSize; /* Must be 24 */
1830 	__u8   OplockLevel;
1831 	__u8   Reserved;
1832 	__le32 Reserved2;
1833 	__u64  PersistentFid;
1834 	__u64  VolatileFid;
1835 } __packed;
1836 
1837 #define SMB2_NOTIFY_BREAK_LEASE_FLAG_ACK_REQUIRED cpu_to_le32(0x01)
1838 
1839 struct smb2_lease_break {
1840 	struct smb2_hdr hdr;
1841 	__le16 StructureSize; /* Must be 44 */
1842 	__le16 Epoch;
1843 	__le32 Flags;
1844 	__u8   LeaseKey[16];
1845 	__le32 CurrentLeaseState;
1846 	__le32 NewLeaseState;
1847 	__le32 BreakReason;
1848 	__le32 AccessMaskHint;
1849 	__le32 ShareMaskHint;
1850 } __packed;
1851 
1852 struct smb2_lease_ack {
1853 	struct smb2_hdr hdr;
1854 	__le16 StructureSize; /* Must be 36 */
1855 	__le16 Reserved;
1856 	__le32 Flags;
1857 	__u8   LeaseKey[16];
1858 	__le32 LeaseState;
1859 	__le64 LeaseDuration;
1860 } __packed;
1861 
1862 #define OP_BREAK_STRUCT_SIZE_20		24
1863 #define OP_BREAK_STRUCT_SIZE_21		36
1864 #endif				/* _COMMON_SMB2PDU_H */
1865