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_hdr ccontext;
68 __u8 Name[8];
69 __le32 Timeout;
70 __le32 Flags;
71 __u8 Reserved[8];
72 __u8 CreateGuid[16];
73 } __packed;
74
75 #define DURABLE_HANDLE_MAX_TIMEOUT 300000
76
77 struct create_durable_reconn_req {
78 struct create_context_hdr ccontext;
79 __u8 Name[8];
80 union {
81 __u8 Reserved[16];
82 struct {
83 __u64 PersistentFileId;
84 __u64 VolatileFileId;
85 } Fid;
86 } Data;
87 } __packed;
88
89 struct create_durable_reconn_v2_req {
90 struct create_context_hdr ccontext;
91 __u8 Name[8];
92 struct {
93 __u64 PersistentFileId;
94 __u64 VolatileFileId;
95 } Fid;
96 __u8 CreateGuid[16];
97 __le32 Flags;
98 } __packed;
99
100 struct create_alloc_size_req {
101 struct create_context_hdr ccontext;
102 __u8 Name[8];
103 __le64 AllocationSize;
104 } __packed;
105
106 struct create_durable_rsp {
107 struct create_context_hdr ccontext;
108 __u8 Name[8];
109 union {
110 __u8 Reserved[8];
111 __u64 data;
112 } Data;
113 } __packed;
114
115 /* See MS-SMB2 2.2.13.2.11 */
116 /* Flags */
117 #define SMB2_DHANDLE_FLAG_PERSISTENT 0x00000002
118 struct create_durable_v2_rsp {
119 struct create_context_hdr ccontext;
120 __u8 Name[8];
121 __le32 Timeout;
122 __le32 Flags;
123 } __packed;
124
125 /* equivalent of the contents of SMB3.1.1 POSIX open context response */
126 struct create_posix_rsp {
127 struct create_context_hdr ccontext;
128 __u8 Name[16];
129 __le32 nlink;
130 __le32 reparse_tag;
131 __le32 mode;
132 /* SidBuffer contain two sids(Domain sid(28), UNIX group sid(16)) */
133 u8 SidBuffer[44];
134 } __packed;
135
136 struct smb2_buffer_desc_v1 {
137 __le64 offset;
138 __le32 token;
139 __le32 length;
140 } __packed;
141
142 #define SMB2_0_IOCTL_IS_FSCTL 0x00000001
143
144 struct smb_sockaddr_in {
145 __be16 Port;
146 __be32 IPv4address;
147 __u8 Reserved[8];
148 } __packed;
149
150 struct smb_sockaddr_in6 {
151 __be16 Port;
152 __be32 FlowInfo;
153 __u8 IPv6address[16];
154 __be32 ScopeId;
155 } __packed;
156
157 #define INTERNETWORK 0x0002
158 #define INTERNETWORKV6 0x0017
159
160 struct sockaddr_storage_rsp {
161 __le16 Family;
162 union {
163 struct smb_sockaddr_in addr4;
164 struct smb_sockaddr_in6 addr6;
165 };
166 } __packed;
167
168 #define RSS_CAPABLE 0x00000001
169 #define RDMA_CAPABLE 0x00000002
170
171 struct network_interface_info_ioctl_rsp {
172 __le32 Next; /* next interface. zero if this is last one */
173 __le32 IfIndex;
174 __le32 Capability; /* RSS or RDMA Capable */
175 __le32 Reserved;
176 __le64 LinkSpeed;
177 char SockAddr_Storage[128];
178 } __packed;
179
180 struct file_object_buf_type1_ioctl_rsp {
181 __u8 ObjectId[16];
182 __u8 BirthVolumeId[16];
183 __u8 BirthObjectId[16];
184 __u8 DomainId[16];
185 } __packed;
186
187 struct resume_key_ioctl_rsp {
188 __u64 ResumeKey[3];
189 __le32 ContextLength;
190 __u8 Context[4]; /* ignored, Windows sets to 4 bytes of zero */
191 } __packed;
192
193 struct copychunk_ioctl_req {
194 __le64 ResumeKey[3];
195 __le32 ChunkCount;
196 __le32 Reserved;
197 __u8 Chunks[1]; /* array of srv_copychunk */
198 } __packed;
199
200 struct srv_copychunk {
201 __le64 SourceOffset;
202 __le64 TargetOffset;
203 __le32 Length;
204 __le32 Reserved;
205 } __packed;
206
207 struct copychunk_ioctl_rsp {
208 __le32 ChunksWritten;
209 __le32 ChunkBytesWritten;
210 __le32 TotalBytesWritten;
211 } __packed;
212
213 struct file_sparse {
214 __u8 SetSparse;
215 } __packed;
216
217 /* FILE Info response size */
218 #define FILE_DIRECTORY_INFORMATION_SIZE 1
219 #define FILE_FULL_DIRECTORY_INFORMATION_SIZE 2
220 #define FILE_BOTH_DIRECTORY_INFORMATION_SIZE 3
221 #define FILE_BASIC_INFORMATION_SIZE 40
222 #define FILE_STANDARD_INFORMATION_SIZE 24
223 #define FILE_INTERNAL_INFORMATION_SIZE 8
224 #define FILE_EA_INFORMATION_SIZE 4
225 #define FILE_ACCESS_INFORMATION_SIZE 4
226 #define FILE_NAME_INFORMATION_SIZE 9
227 #define FILE_RENAME_INFORMATION_SIZE 10
228 #define FILE_LINK_INFORMATION_SIZE 11
229 #define FILE_NAMES_INFORMATION_SIZE 12
230 #define FILE_DISPOSITION_INFORMATION_SIZE 13
231 #define FILE_POSITION_INFORMATION_SIZE 14
232 #define FILE_FULL_EA_INFORMATION_SIZE 15
233 #define FILE_MODE_INFORMATION_SIZE 4
234 #define FILE_ALIGNMENT_INFORMATION_SIZE 4
235 #define FILE_ALL_INFORMATION_SIZE 104
236 #define FILE_ALLOCATION_INFORMATION_SIZE 19
237 #define FILE_END_OF_FILE_INFORMATION_SIZE 20
238 #define FILE_ALTERNATE_NAME_INFORMATION_SIZE 8
239 #define FILE_STREAM_INFORMATION_SIZE 32
240 #define FILE_PIPE_INFORMATION_SIZE 23
241 #define FILE_PIPE_LOCAL_INFORMATION_SIZE 24
242 #define FILE_PIPE_REMOTE_INFORMATION_SIZE 25
243 #define FILE_MAILSLOT_QUERY_INFORMATION_SIZE 26
244 #define FILE_MAILSLOT_SET_INFORMATION_SIZE 27
245 #define FILE_COMPRESSION_INFORMATION_SIZE 16
246 #define FILE_OBJECT_ID_INFORMATION_SIZE 29
247 /* Number 30 not defined in documents */
248 #define FILE_MOVE_CLUSTER_INFORMATION_SIZE 31
249 #define FILE_QUOTA_INFORMATION_SIZE 32
250 #define FILE_REPARSE_POINT_INFORMATION_SIZE 33
251 #define FILE_NETWORK_OPEN_INFORMATION_SIZE 56
252 #define FILE_ATTRIBUTE_TAG_INFORMATION_SIZE 8
253
254 /* FS Info response size */
255 #define FS_DEVICE_INFORMATION_SIZE 8
256 #define FS_ATTRIBUTE_INFORMATION_SIZE 16
257 #define FS_VOLUME_INFORMATION_SIZE 24
258 #define FS_SIZE_INFORMATION_SIZE 24
259 #define FS_FULL_SIZE_INFORMATION_SIZE 32
260 #define FS_SECTOR_SIZE_INFORMATION_SIZE 28
261 #define FS_OBJECT_ID_INFORMATION_SIZE 64
262 #define FS_CONTROL_INFORMATION_SIZE 48
263 #define FS_POSIX_INFORMATION_SIZE 56
264
265 /* FS_ATTRIBUTE_File_System_Name */
266 #define FS_TYPE_SUPPORT_SIZE 44
267 struct fs_type_info {
268 char *fs_name;
269 long magic_number;
270 } __packed;
271
272 /*
273 * PDU query infolevel structure definitions
274 * BB consider moving to a different header
275 */
276
277 struct smb2_file_access_info {
278 __le32 AccessFlags;
279 } __packed;
280
281 struct smb2_file_alignment_info {
282 __le32 AlignmentRequirement;
283 } __packed;
284
285 struct smb2_file_basic_info { /* data block encoding of response to level 18 */
286 __le64 CreationTime; /* Beginning of FILE_BASIC_INFO equivalent */
287 __le64 LastAccessTime;
288 __le64 LastWriteTime;
289 __le64 ChangeTime;
290 __le32 Attributes;
291 __u32 Pad1; /* End of FILE_BASIC_INFO_INFO equivalent */
292 } __packed;
293
294 struct smb2_file_alt_name_info {
295 __le32 FileNameLength;
296 char FileName[];
297 } __packed;
298
299 struct smb2_file_stream_info {
300 __le32 NextEntryOffset;
301 __le32 StreamNameLength;
302 __le64 StreamSize;
303 __le64 StreamAllocationSize;
304 char StreamName[];
305 } __packed;
306
307 struct smb2_file_ntwrk_info {
308 __le64 CreationTime;
309 __le64 LastAccessTime;
310 __le64 LastWriteTime;
311 __le64 ChangeTime;
312 __le64 AllocationSize;
313 __le64 EndOfFile;
314 __le32 Attributes;
315 __le32 Reserved;
316 } __packed;
317
318 struct smb2_file_standard_info {
319 __le64 AllocationSize;
320 __le64 EndOfFile;
321 __le32 NumberOfLinks; /* hard links */
322 __u8 DeletePending;
323 __u8 Directory;
324 __le16 Reserved;
325 } __packed; /* level 18 Query */
326
327 struct smb2_file_ea_info {
328 __le32 EASize;
329 } __packed;
330
331 struct smb2_file_alloc_info {
332 __le64 AllocationSize;
333 } __packed;
334
335 struct smb2_file_disposition_info {
336 __u8 DeletePending;
337 } __packed;
338
339 struct smb2_file_pos_info {
340 __le64 CurrentByteOffset;
341 } __packed;
342
343 #define FILE_MODE_INFO_MASK cpu_to_le32(0x0000100e)
344
345 struct smb2_file_mode_info {
346 __le32 Mode;
347 } __packed;
348
349 #define COMPRESSION_FORMAT_NONE 0x0000
350 #define COMPRESSION_FORMAT_LZNT1 0x0002
351
352 struct smb2_file_comp_info {
353 __le64 CompressedFileSize;
354 __le16 CompressionFormat;
355 __u8 CompressionUnitShift;
356 __u8 ChunkShift;
357 __u8 ClusterShift;
358 __u8 Reserved[3];
359 } __packed;
360
361 struct smb2_file_attr_tag_info {
362 __le32 FileAttributes;
363 __le32 ReparseTag;
364 } __packed;
365
366 #define SL_RESTART_SCAN 0x00000001
367 #define SL_RETURN_SINGLE_ENTRY 0x00000002
368 #define SL_INDEX_SPECIFIED 0x00000004
369
370 struct smb2_ea_info_req {
371 __le32 NextEntryOffset;
372 __u8 EaNameLength;
373 char name[1];
374 } __packed; /* level 15 Query */
375
376 struct smb2_ea_info {
377 __le32 NextEntryOffset;
378 __u8 Flags;
379 __u8 EaNameLength;
380 __le16 EaValueLength;
381 char name[];
382 /* optionally followed by value */
383 } __packed; /* level 15 Query */
384
385 struct create_ea_buf_req {
386 struct create_context_hdr ccontext;
387 __u8 Name[8];
388 struct smb2_ea_info ea;
389 } __packed;
390
391 struct create_sd_buf_req {
392 struct create_context_hdr ccontext;
393 __u8 Name[8];
394 struct smb_ntsd ntsd;
395 } __packed;
396
397 struct smb2_posix_info {
398 __le32 NextEntryOffset;
399 __u32 Ignored;
400 __le64 CreationTime;
401 __le64 LastAccessTime;
402 __le64 LastWriteTime;
403 __le64 ChangeTime;
404 __le64 EndOfFile;
405 __le64 AllocationSize;
406 __le32 DosAttributes;
407 __le64 Inode;
408 __le32 DeviceId;
409 __le32 Zero;
410 /* beginning of POSIX Create Context Response */
411 __le32 HardLinks;
412 __le32 ReparseTag;
413 __le32 Mode;
414 /* SidBuffer contain two sids (UNIX user sid(16), UNIX group sid(16)) */
415 u8 SidBuffer[32];
416 __le32 name_len;
417 u8 name[];
418 /*
419 * var sized owner SID
420 * var sized group SID
421 * le32 filenamelength
422 * u8 filename[]
423 */
424 } __packed;
425
426 /* functions */
427 void init_smb2_1_server(struct ksmbd_conn *conn);
428 void init_smb3_0_server(struct ksmbd_conn *conn);
429 void init_smb3_02_server(struct ksmbd_conn *conn);
430 int init_smb3_11_server(struct ksmbd_conn *conn);
431
432 void init_smb2_max_read_size(unsigned int sz);
433 void init_smb2_max_write_size(unsigned int sz);
434 void init_smb2_max_trans_size(unsigned int sz);
435 void init_smb2_max_credits(unsigned int sz);
436
437 bool is_smb2_neg_cmd(struct ksmbd_work *work);
438 bool is_smb2_rsp(struct ksmbd_work *work);
439
440 u16 get_smb2_cmd_val(struct ksmbd_work *work);
441 void set_smb2_rsp_status(struct ksmbd_work *work, __le32 err);
442 int init_smb2_rsp_hdr(struct ksmbd_work *work);
443 int smb2_allocate_rsp_buf(struct ksmbd_work *work);
444 bool is_chained_smb2_message(struct ksmbd_work *work);
445 int init_smb2_neg_rsp(struct ksmbd_work *work);
446 void smb2_set_err_rsp(struct ksmbd_work *work);
447 int smb2_check_user_session(struct ksmbd_work *work);
448 int smb2_get_ksmbd_tcon(struct ksmbd_work *work);
449 bool smb2_is_sign_req(struct ksmbd_work *work, unsigned int command);
450 int smb2_check_sign_req(struct ksmbd_work *work);
451 void smb2_set_sign_rsp(struct ksmbd_work *work);
452 int smb3_check_sign_req(struct ksmbd_work *work);
453 void smb3_set_sign_rsp(struct ksmbd_work *work);
454 int find_matching_smb2_dialect(int start_index, __le16 *cli_dialects,
455 __le16 dialects_count);
456 struct file_lock *smb_flock_init(struct file *f);
457 int setup_async_work(struct ksmbd_work *work, void (*fn)(void **),
458 void **arg);
459 void release_async_work(struct ksmbd_work *work);
460 void smb2_send_interim_resp(struct ksmbd_work *work, __le32 status);
461 struct channel *lookup_chann_list(struct ksmbd_session *sess,
462 struct ksmbd_conn *conn);
463 void smb3_preauth_hash_rsp(struct ksmbd_work *work);
464 bool smb3_is_transform_hdr(void *buf);
465 int smb3_decrypt_req(struct ksmbd_work *work);
466 int smb3_encrypt_resp(struct ksmbd_work *work);
467 bool smb3_11_final_sess_setup_resp(struct ksmbd_work *work);
468 int smb2_set_rsp_credits(struct ksmbd_work *work);
469 bool smb3_encryption_negotiated(struct ksmbd_conn *conn);
470
471 /* smb2 misc functions */
472 int ksmbd_smb2_check_message(struct ksmbd_work *work);
473
474 /* smb2 command handlers */
475 int smb2_handle_negotiate(struct ksmbd_work *work);
476 int smb2_negotiate_request(struct ksmbd_work *work);
477 int smb2_sess_setup(struct ksmbd_work *work);
478 int smb2_tree_connect(struct ksmbd_work *work);
479 int smb2_tree_disconnect(struct ksmbd_work *work);
480 int smb2_session_logoff(struct ksmbd_work *work);
481 int smb2_open(struct ksmbd_work *work);
482 int smb2_query_info(struct ksmbd_work *work);
483 int smb2_query_dir(struct ksmbd_work *work);
484 int smb2_close(struct ksmbd_work *work);
485 int smb2_echo(struct ksmbd_work *work);
486 int smb2_set_info(struct ksmbd_work *work);
487 int smb2_read(struct ksmbd_work *work);
488 int smb2_write(struct ksmbd_work *work);
489 int smb2_flush(struct ksmbd_work *work);
490 int smb2_cancel(struct ksmbd_work *work);
491 int smb2_lock(struct ksmbd_work *work);
492 int smb2_ioctl(struct ksmbd_work *work);
493 int smb2_oplock_break(struct ksmbd_work *work);
494 int smb2_notify(struct ksmbd_work *ksmbd_work);
495
496 /*
497 * Get the body of the smb2 message excluding the 4 byte rfc1002 headers
498 * from request/response buffer.
499 */
smb2_get_msg(void * buf)500 static inline void *smb2_get_msg(void *buf)
501 {
502 return buf + 4;
503 }
504
505 #endif /* _SMB2PDU_H */
506