1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3 * Copyright (C) 2018 Samsung Electronics Co., Ltd.
4 *
5 * linux-ksmbd-devel@lists.sourceforge.net
6 */
7
8 #ifndef _LINUX_KSMBD_SERVER_H
9 #define _LINUX_KSMBD_SERVER_H
10
11 #include <linux/types.h>
12
13 /*
14 * This is a userspace ABI to communicate data between ksmbd and user IPC
15 * daemon using netlink. This is added to track and cache user account DB
16 * and share configuration info from userspace.
17 *
18 * - KSMBD_EVENT_HEARTBEAT_REQUEST(ksmbd_heartbeat)
19 * This event is to check whether user IPC daemon is alive. If user IPC
20 * daemon is dead, ksmbd keep existing connection till disconnecting and
21 * new connection will be denied.
22 *
23 * - KSMBD_EVENT_STARTING_UP(ksmbd_startup_request)
24 * This event is to receive the information that initializes the ksmbd
25 * server from the user IPC daemon and to start the server. The global
26 * section parameters are given from smb.conf as initialization
27 * information.
28 *
29 * - KSMBD_EVENT_SHUTTING_DOWN(ksmbd_shutdown_request)
30 * This event is to shutdown ksmbd server.
31 *
32 * - KSMBD_EVENT_LOGIN_REQUEST/RESPONSE(ksmbd_login_request/response)
33 * This event is to get user account info to user IPC daemon.
34 *
35 * - KSMBD_EVENT_SHARE_CONFIG_REQUEST/RESPONSE(ksmbd_share_config_request/response)
36 * This event is to get net share configuration info.
37 *
38 * - KSMBD_EVENT_TREE_CONNECT_REQUEST/RESPONSE(ksmbd_tree_connect_request/response)
39 * This event is to get session and tree connect info.
40 *
41 * - KSMBD_EVENT_TREE_DISCONNECT_REQUEST(ksmbd_tree_disconnect_request)
42 * This event is to send tree disconnect info to user IPC daemon.
43 *
44 * - KSMBD_EVENT_LOGOUT_REQUEST(ksmbd_logout_request)
45 * This event is to send logout request to user IPC daemon.
46 *
47 * - KSMBD_EVENT_RPC_REQUEST/RESPONSE(ksmbd_rpc_command)
48 * This event is to make DCE/RPC request like srvsvc, wkssvc, lsarpc,
49 * samr to be processed in userspace.
50 *
51 * - KSMBD_EVENT_SPNEGO_AUTHEN_REQUEST/RESPONSE(ksmbd_spnego_authen_request/response)
52 * This event is to make kerberos authentication to be processed in
53 * userspace.
54 */
55
56 #define KSMBD_GENL_NAME "SMBD_GENL"
57 #define KSMBD_GENL_VERSION 0x01
58
59 #define KSMBD_REQ_MAX_ACCOUNT_NAME_SZ 48
60 #define KSMBD_REQ_MAX_HASH_SZ 18
61 #define KSMBD_REQ_MAX_SHARE_NAME 64
62
63 /*
64 * IPC heartbeat frame to check whether user IPC daemon is alive.
65 */
66 struct ksmbd_heartbeat {
67 __u32 handle;
68 };
69
70 /*
71 * Global config flags.
72 */
73 #define KSMBD_GLOBAL_FLAG_INVALID (0)
74 #define KSMBD_GLOBAL_FLAG_SMB2_LEASES BIT(0)
75 #define KSMBD_GLOBAL_FLAG_SMB2_ENCRYPTION BIT(1)
76 #define KSMBD_GLOBAL_FLAG_SMB3_MULTICHANNEL BIT(2)
77
78 /*
79 * IPC request for ksmbd server startup
80 */
81 struct ksmbd_startup_request {
82 __u32 flags; /* Flags for global config */
83 __s32 signing; /* Signing enabled */
84 __s8 min_prot[16]; /* The minimum SMB protocol version */
85 __s8 max_prot[16]; /* The maximum SMB protocol version */
86 __s8 netbios_name[16];
87 __s8 work_group[64]; /* Workgroup */
88 __s8 server_string[64]; /* Server string */
89 __u16 tcp_port; /* tcp port */
90 __u16 ipc_timeout; /*
91 * specifies the number of seconds
92 * server will wait for the userspace to
93 * reply to heartbeat frames.
94 */
95 __u32 deadtime; /* Number of minutes of inactivity */
96 __u32 file_max; /* Limits the maximum number of open files */
97 __u32 smb2_max_write; /* MAX write size */
98 __u32 smb2_max_read; /* MAX read size */
99 __u32 smb2_max_trans; /* MAX trans size */
100 __u32 share_fake_fscaps; /*
101 * Support some special application that
102 * makes QFSINFO calls to check whether
103 * we set the SPARSE_FILES bit (0x40).
104 */
105 __u32 sub_auth[3]; /* Subauth value for Security ID */
106 __u32 smb2_max_credits; /* MAX credits */
107 __u32 smbd_max_io_size; /* smbd read write size */
108 __u32 max_connections; /* Number of maximum simultaneous connections */
109 __u32 reserved[126]; /* Reserved room */
110 __u32 ifc_list_sz; /* interfaces list size */
111 __s8 ____payload[];
112 };
113
114 #define KSMBD_STARTUP_CONFIG_INTERFACES(s) ((s)->____payload)
115
116 /*
117 * IPC request to shutdown ksmbd server.
118 */
119 struct ksmbd_shutdown_request {
120 __s32 reserved[16];
121 };
122
123 /*
124 * IPC user login request.
125 */
126 struct ksmbd_login_request {
127 __u32 handle;
128 __s8 account[KSMBD_REQ_MAX_ACCOUNT_NAME_SZ]; /* user account name */
129 __u32 reserved[16]; /* Reserved room */
130 };
131
132 /*
133 * IPC user login response.
134 */
135 struct ksmbd_login_response {
136 __u32 handle;
137 __u32 gid; /* group id */
138 __u32 uid; /* user id */
139 __s8 account[KSMBD_REQ_MAX_ACCOUNT_NAME_SZ]; /* user account name */
140 __u16 status;
141 __u16 hash_sz; /* hash size */
142 __s8 hash[KSMBD_REQ_MAX_HASH_SZ]; /* password hash */
143 __u32 reserved[16]; /* Reserved room */
144 };
145
146 /*
147 * IPC request to fetch net share config.
148 */
149 struct ksmbd_share_config_request {
150 __u32 handle;
151 __s8 share_name[KSMBD_REQ_MAX_SHARE_NAME]; /* share name */
152 __u32 reserved[16]; /* Reserved room */
153 };
154
155 /*
156 * IPC response to the net share config request.
157 */
158 struct ksmbd_share_config_response {
159 __u32 handle;
160 __u32 flags;
161 __u16 create_mask;
162 __u16 directory_mask;
163 __u16 force_create_mode;
164 __u16 force_directory_mode;
165 __u16 force_uid;
166 __u16 force_gid;
167 __s8 share_name[KSMBD_REQ_MAX_SHARE_NAME];
168 __u32 reserved[112]; /* Reserved room */
169 __u32 veto_list_sz;
170 __s8 ____payload[];
171 };
172
173 #define KSMBD_SHARE_CONFIG_VETO_LIST(s) ((s)->____payload)
174
175 static inline char *
ksmbd_share_config_path(struct ksmbd_share_config_response * sc)176 ksmbd_share_config_path(struct ksmbd_share_config_response *sc)
177 {
178 char *p = sc->____payload;
179
180 if (sc->veto_list_sz)
181 p += sc->veto_list_sz + 1;
182
183 return p;
184 }
185
186 /*
187 * IPC request for tree connection. This request include session and tree
188 * connect info from client.
189 */
190 struct ksmbd_tree_connect_request {
191 __u32 handle;
192 __u16 account_flags;
193 __u16 flags;
194 __u64 session_id;
195 __u64 connect_id;
196 __s8 account[KSMBD_REQ_MAX_ACCOUNT_NAME_SZ];
197 __s8 share[KSMBD_REQ_MAX_SHARE_NAME];
198 __s8 peer_addr[64];
199 __u32 reserved[16]; /* Reserved room */
200 };
201
202 /*
203 * IPC Response structure for tree connection.
204 */
205 struct ksmbd_tree_connect_response {
206 __u32 handle;
207 __u16 status;
208 __u16 connection_flags;
209 __u32 reserved[16]; /* Reserved room */
210 };
211
212 /*
213 * IPC Request struture to disconnect tree connection.
214 */
215 struct ksmbd_tree_disconnect_request {
216 __u64 session_id; /* session id */
217 __u64 connect_id; /* tree connection id */
218 __u32 reserved[16]; /* Reserved room */
219 };
220
221 /*
222 * IPC Response structure to logout user account.
223 */
224 struct ksmbd_logout_request {
225 __s8 account[KSMBD_REQ_MAX_ACCOUNT_NAME_SZ]; /* user account name */
226 __u32 account_flags;
227 __u32 reserved[16]; /* Reserved room */
228 };
229
230 /*
231 * RPC command structure to send rpc request like srvsvc or wkssvc to
232 * IPC user daemon.
233 */
234 struct ksmbd_rpc_command {
235 __u32 handle;
236 __u32 flags;
237 __u32 payload_sz;
238 __u8 payload[];
239 };
240
241 /*
242 * IPC Request Kerberos authentication
243 */
244 struct ksmbd_spnego_authen_request {
245 __u32 handle;
246 __u16 spnego_blob_len; /* the length of spnego_blob */
247 __u8 spnego_blob[]; /*
248 * the GSS token from SecurityBuffer of
249 * SMB2 SESSION SETUP request
250 */
251 };
252
253 /*
254 * Response data which includes the GSS token and the session key generated by
255 * user daemon.
256 */
257 struct ksmbd_spnego_authen_response {
258 __u32 handle;
259 struct ksmbd_login_response login_response; /*
260 * the login response with
261 * a user identified by the
262 * GSS token from a client
263 */
264 __u16 session_key_len; /* the length of the session key */
265 __u16 spnego_blob_len; /*
266 * the length of the GSS token which will be
267 * stored in SecurityBuffer of SMB2 SESSION
268 * SETUP response
269 */
270 __u8 payload[]; /* session key + AP_REP */
271 };
272
273 /*
274 * This also used as NETLINK attribute type value.
275 *
276 * NOTE:
277 * Response message type value should be equal to
278 * request message type value + 1.
279 */
280 enum ksmbd_event {
281 KSMBD_EVENT_UNSPEC = 0,
282 KSMBD_EVENT_HEARTBEAT_REQUEST,
283
284 KSMBD_EVENT_STARTING_UP,
285 KSMBD_EVENT_SHUTTING_DOWN,
286
287 KSMBD_EVENT_LOGIN_REQUEST,
288 KSMBD_EVENT_LOGIN_RESPONSE = 5,
289
290 KSMBD_EVENT_SHARE_CONFIG_REQUEST,
291 KSMBD_EVENT_SHARE_CONFIG_RESPONSE,
292
293 KSMBD_EVENT_TREE_CONNECT_REQUEST,
294 KSMBD_EVENT_TREE_CONNECT_RESPONSE,
295
296 KSMBD_EVENT_TREE_DISCONNECT_REQUEST = 10,
297
298 KSMBD_EVENT_LOGOUT_REQUEST,
299
300 KSMBD_EVENT_RPC_REQUEST,
301 KSMBD_EVENT_RPC_RESPONSE,
302
303 KSMBD_EVENT_SPNEGO_AUTHEN_REQUEST,
304 KSMBD_EVENT_SPNEGO_AUTHEN_RESPONSE = 15,
305
306 KSMBD_EVENT_MAX
307 };
308
309 /*
310 * Enumeration for IPC tree connect status.
311 */
312 enum KSMBD_TREE_CONN_STATUS {
313 KSMBD_TREE_CONN_STATUS_OK = 0,
314 KSMBD_TREE_CONN_STATUS_NOMEM,
315 KSMBD_TREE_CONN_STATUS_NO_SHARE,
316 KSMBD_TREE_CONN_STATUS_NO_USER,
317 KSMBD_TREE_CONN_STATUS_INVALID_USER,
318 KSMBD_TREE_CONN_STATUS_HOST_DENIED = 5,
319 KSMBD_TREE_CONN_STATUS_CONN_EXIST,
320 KSMBD_TREE_CONN_STATUS_TOO_MANY_CONNS,
321 KSMBD_TREE_CONN_STATUS_TOO_MANY_SESSIONS,
322 KSMBD_TREE_CONN_STATUS_ERROR,
323 };
324
325 /*
326 * User config flags.
327 */
328 #define KSMBD_USER_FLAG_INVALID (0)
329 #define KSMBD_USER_FLAG_OK BIT(0)
330 #define KSMBD_USER_FLAG_BAD_PASSWORD BIT(1)
331 #define KSMBD_USER_FLAG_BAD_UID BIT(2)
332 #define KSMBD_USER_FLAG_BAD_USER BIT(3)
333 #define KSMBD_USER_FLAG_GUEST_ACCOUNT BIT(4)
334 #define KSMBD_USER_FLAG_DELAY_SESSION BIT(5)
335
336 /*
337 * Share config flags.
338 */
339 #define KSMBD_SHARE_FLAG_INVALID (0)
340 #define KSMBD_SHARE_FLAG_AVAILABLE BIT(0)
341 #define KSMBD_SHARE_FLAG_BROWSEABLE BIT(1)
342 #define KSMBD_SHARE_FLAG_WRITEABLE BIT(2)
343 #define KSMBD_SHARE_FLAG_READONLY BIT(3)
344 #define KSMBD_SHARE_FLAG_GUEST_OK BIT(4)
345 #define KSMBD_SHARE_FLAG_GUEST_ONLY BIT(5)
346 #define KSMBD_SHARE_FLAG_STORE_DOS_ATTRS BIT(6)
347 #define KSMBD_SHARE_FLAG_OPLOCKS BIT(7)
348 #define KSMBD_SHARE_FLAG_PIPE BIT(8)
349 #define KSMBD_SHARE_FLAG_HIDE_DOT_FILES BIT(9)
350 #define KSMBD_SHARE_FLAG_INHERIT_OWNER BIT(10)
351 #define KSMBD_SHARE_FLAG_STREAMS BIT(11)
352 #define KSMBD_SHARE_FLAG_FOLLOW_SYMLINKS BIT(12)
353 #define KSMBD_SHARE_FLAG_ACL_XATTR BIT(13)
354 #define KSMBD_SHARE_FLAG_UPDATE BIT(14)
355
356 /*
357 * Tree connect request flags.
358 */
359 #define KSMBD_TREE_CONN_FLAG_REQUEST_SMB1 (0)
360 #define KSMBD_TREE_CONN_FLAG_REQUEST_IPV6 BIT(0)
361 #define KSMBD_TREE_CONN_FLAG_REQUEST_SMB2 BIT(1)
362
363 /*
364 * Tree connect flags.
365 */
366 #define KSMBD_TREE_CONN_FLAG_GUEST_ACCOUNT BIT(0)
367 #define KSMBD_TREE_CONN_FLAG_READ_ONLY BIT(1)
368 #define KSMBD_TREE_CONN_FLAG_WRITABLE BIT(2)
369 #define KSMBD_TREE_CONN_FLAG_ADMIN_ACCOUNT BIT(3)
370 #define KSMBD_TREE_CONN_FLAG_UPDATE BIT(4)
371
372 /*
373 * RPC over IPC.
374 */
375 #define KSMBD_RPC_METHOD_RETURN BIT(0)
376 #define KSMBD_RPC_SRVSVC_METHOD_INVOKE BIT(1)
377 #define KSMBD_RPC_SRVSVC_METHOD_RETURN (KSMBD_RPC_SRVSVC_METHOD_INVOKE | KSMBD_RPC_METHOD_RETURN)
378 #define KSMBD_RPC_WKSSVC_METHOD_INVOKE BIT(2)
379 #define KSMBD_RPC_WKSSVC_METHOD_RETURN (KSMBD_RPC_WKSSVC_METHOD_INVOKE | KSMBD_RPC_METHOD_RETURN)
380 #define KSMBD_RPC_IOCTL_METHOD (BIT(3) | KSMBD_RPC_METHOD_RETURN)
381 #define KSMBD_RPC_OPEN_METHOD BIT(4)
382 #define KSMBD_RPC_WRITE_METHOD BIT(5)
383 #define KSMBD_RPC_READ_METHOD (BIT(6) | KSMBD_RPC_METHOD_RETURN)
384 #define KSMBD_RPC_CLOSE_METHOD BIT(7)
385 #define KSMBD_RPC_RAP_METHOD (BIT(8) | KSMBD_RPC_METHOD_RETURN)
386 #define KSMBD_RPC_RESTRICTED_CONTEXT BIT(9)
387 #define KSMBD_RPC_SAMR_METHOD_INVOKE BIT(10)
388 #define KSMBD_RPC_SAMR_METHOD_RETURN (KSMBD_RPC_SAMR_METHOD_INVOKE | KSMBD_RPC_METHOD_RETURN)
389 #define KSMBD_RPC_LSARPC_METHOD_INVOKE BIT(11)
390 #define KSMBD_RPC_LSARPC_METHOD_RETURN (KSMBD_RPC_LSARPC_METHOD_INVOKE | KSMBD_RPC_METHOD_RETURN)
391
392 /*
393 * RPC status definitions.
394 */
395 #define KSMBD_RPC_OK 0
396 #define KSMBD_RPC_EBAD_FUNC 0x00000001
397 #define KSMBD_RPC_EACCESS_DENIED 0x00000005
398 #define KSMBD_RPC_EBAD_FID 0x00000006
399 #define KSMBD_RPC_ENOMEM 0x00000008
400 #define KSMBD_RPC_EBAD_DATA 0x0000000D
401 #define KSMBD_RPC_ENOTIMPLEMENTED 0x00000040
402 #define KSMBD_RPC_EINVALID_PARAMETER 0x00000057
403 #define KSMBD_RPC_EMORE_DATA 0x000000EA
404 #define KSMBD_RPC_EINVALID_LEVEL 0x0000007C
405 #define KSMBD_RPC_SOME_NOT_MAPPED 0x00000107
406
407 #define KSMBD_CONFIG_OPT_DISABLED 0
408 #define KSMBD_CONFIG_OPT_ENABLED 1
409 #define KSMBD_CONFIG_OPT_AUTO 2
410 #define KSMBD_CONFIG_OPT_MANDATORY 3
411
412 #endif /* _LINUX_KSMBD_SERVER_H */
413