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 #define KSMBD_GLOBAL_FLAG_SMB2_ENCRYPTION_OFF BIT(3) 78 79 /* 80 * IPC request for ksmbd server startup 81 */ 82 struct ksmbd_startup_request { 83 __u32 flags; /* Flags for global config */ 84 __s32 signing; /* Signing enabled */ 85 __s8 min_prot[16]; /* The minimum SMB protocol version */ 86 __s8 max_prot[16]; /* The maximum SMB protocol version */ 87 __s8 netbios_name[16]; 88 __s8 work_group[64]; /* Workgroup */ 89 __s8 server_string[64]; /* Server string */ 90 __u16 tcp_port; /* tcp port */ 91 __u16 ipc_timeout; /* 92 * specifies the number of seconds 93 * server will wait for the userspace to 94 * reply to heartbeat frames. 95 */ 96 __u32 deadtime; /* Number of minutes of inactivity */ 97 __u32 file_max; /* Limits the maximum number of open files */ 98 __u32 smb2_max_write; /* MAX write size */ 99 __u32 smb2_max_read; /* MAX read size */ 100 __u32 smb2_max_trans; /* MAX trans size */ 101 __u32 share_fake_fscaps; /* 102 * Support some special application that 103 * makes QFSINFO calls to check whether 104 * we set the SPARSE_FILES bit (0x40). 105 */ 106 __u32 sub_auth[3]; /* Subauth value for Security ID */ 107 __u32 smb2_max_credits; /* MAX credits */ 108 __u32 smbd_max_io_size; /* smbd read write size */ 109 __u32 max_connections; /* Number of maximum simultaneous connections */ 110 __u32 reserved[126]; /* Reserved room */ 111 __u32 ifc_list_sz; /* interfaces list size */ 112 __s8 ____payload[]; 113 }; 114 115 #define KSMBD_STARTUP_CONFIG_INTERFACES(s) ((s)->____payload) 116 117 /* 118 * IPC request to shutdown ksmbd server. 119 */ 120 struct ksmbd_shutdown_request { 121 __s32 reserved[16]; 122 }; 123 124 /* 125 * IPC user login request. 126 */ 127 struct ksmbd_login_request { 128 __u32 handle; 129 __s8 account[KSMBD_REQ_MAX_ACCOUNT_NAME_SZ]; /* user account name */ 130 __u32 reserved[16]; /* Reserved room */ 131 }; 132 133 /* 134 * IPC user login response. 135 */ 136 struct ksmbd_login_response { 137 __u32 handle; 138 __u32 gid; /* group id */ 139 __u32 uid; /* user id */ 140 __s8 account[KSMBD_REQ_MAX_ACCOUNT_NAME_SZ]; /* user account name */ 141 __u16 status; 142 __u16 hash_sz; /* hash size */ 143 __s8 hash[KSMBD_REQ_MAX_HASH_SZ]; /* password hash */ 144 __u32 reserved[16]; /* Reserved room */ 145 }; 146 147 /* 148 * IPC request to fetch net share config. 149 */ 150 struct ksmbd_share_config_request { 151 __u32 handle; 152 __s8 share_name[KSMBD_REQ_MAX_SHARE_NAME]; /* share name */ 153 __u32 reserved[16]; /* Reserved room */ 154 }; 155 156 /* 157 * IPC response to the net share config request. 158 */ 159 struct ksmbd_share_config_response { 160 __u32 handle; 161 __u32 flags; 162 __u16 create_mask; 163 __u16 directory_mask; 164 __u16 force_create_mode; 165 __u16 force_directory_mode; 166 __u16 force_uid; 167 __u16 force_gid; 168 __s8 share_name[KSMBD_REQ_MAX_SHARE_NAME]; 169 __u32 reserved[112]; /* Reserved room */ 170 __u32 veto_list_sz; 171 __s8 ____payload[]; 172 }; 173 174 #define KSMBD_SHARE_CONFIG_VETO_LIST(s) ((s)->____payload) 175 176 static inline char * 177 ksmbd_share_config_path(struct ksmbd_share_config_response *sc) 178 { 179 char *p = sc->____payload; 180 181 if (sc->veto_list_sz) 182 p += sc->veto_list_sz + 1; 183 184 return p; 185 } 186 187 /* 188 * IPC request for tree connection. This request include session and tree 189 * connect info from client. 190 */ 191 struct ksmbd_tree_connect_request { 192 __u32 handle; 193 __u16 account_flags; 194 __u16 flags; 195 __u64 session_id; 196 __u64 connect_id; 197 __s8 account[KSMBD_REQ_MAX_ACCOUNT_NAME_SZ]; 198 __s8 share[KSMBD_REQ_MAX_SHARE_NAME]; 199 __s8 peer_addr[64]; 200 __u32 reserved[16]; /* Reserved room */ 201 }; 202 203 /* 204 * IPC Response structure for tree connection. 205 */ 206 struct ksmbd_tree_connect_response { 207 __u32 handle; 208 __u16 status; 209 __u16 connection_flags; 210 __u32 reserved[16]; /* Reserved room */ 211 }; 212 213 /* 214 * IPC Request struture to disconnect tree connection. 215 */ 216 struct ksmbd_tree_disconnect_request { 217 __u64 session_id; /* session id */ 218 __u64 connect_id; /* tree connection id */ 219 __u32 reserved[16]; /* Reserved room */ 220 }; 221 222 /* 223 * IPC Response structure to logout user account. 224 */ 225 struct ksmbd_logout_request { 226 __s8 account[KSMBD_REQ_MAX_ACCOUNT_NAME_SZ]; /* user account name */ 227 __u32 account_flags; 228 __u32 reserved[16]; /* Reserved room */ 229 }; 230 231 /* 232 * RPC command structure to send rpc request like srvsvc or wkssvc to 233 * IPC user daemon. 234 */ 235 struct ksmbd_rpc_command { 236 __u32 handle; 237 __u32 flags; 238 __u32 payload_sz; 239 __u8 payload[]; 240 }; 241 242 /* 243 * IPC Request Kerberos authentication 244 */ 245 struct ksmbd_spnego_authen_request { 246 __u32 handle; 247 __u16 spnego_blob_len; /* the length of spnego_blob */ 248 __u8 spnego_blob[]; /* 249 * the GSS token from SecurityBuffer of 250 * SMB2 SESSION SETUP request 251 */ 252 }; 253 254 /* 255 * Response data which includes the GSS token and the session key generated by 256 * user daemon. 257 */ 258 struct ksmbd_spnego_authen_response { 259 __u32 handle; 260 struct ksmbd_login_response login_response; /* 261 * the login response with 262 * a user identified by the 263 * GSS token from a client 264 */ 265 __u16 session_key_len; /* the length of the session key */ 266 __u16 spnego_blob_len; /* 267 * the length of the GSS token which will be 268 * stored in SecurityBuffer of SMB2 SESSION 269 * SETUP response 270 */ 271 __u8 payload[]; /* session key + AP_REP */ 272 }; 273 274 /* 275 * This also used as NETLINK attribute type value. 276 * 277 * NOTE: 278 * Response message type value should be equal to 279 * request message type value + 1. 280 */ 281 enum ksmbd_event { 282 KSMBD_EVENT_UNSPEC = 0, 283 KSMBD_EVENT_HEARTBEAT_REQUEST, 284 285 KSMBD_EVENT_STARTING_UP, 286 KSMBD_EVENT_SHUTTING_DOWN, 287 288 KSMBD_EVENT_LOGIN_REQUEST, 289 KSMBD_EVENT_LOGIN_RESPONSE = 5, 290 291 KSMBD_EVENT_SHARE_CONFIG_REQUEST, 292 KSMBD_EVENT_SHARE_CONFIG_RESPONSE, 293 294 KSMBD_EVENT_TREE_CONNECT_REQUEST, 295 KSMBD_EVENT_TREE_CONNECT_RESPONSE, 296 297 KSMBD_EVENT_TREE_DISCONNECT_REQUEST = 10, 298 299 KSMBD_EVENT_LOGOUT_REQUEST, 300 301 KSMBD_EVENT_RPC_REQUEST, 302 KSMBD_EVENT_RPC_RESPONSE, 303 304 KSMBD_EVENT_SPNEGO_AUTHEN_REQUEST, 305 KSMBD_EVENT_SPNEGO_AUTHEN_RESPONSE = 15, 306 307 KSMBD_EVENT_MAX 308 }; 309 310 /* 311 * Enumeration for IPC tree connect status. 312 */ 313 enum KSMBD_TREE_CONN_STATUS { 314 KSMBD_TREE_CONN_STATUS_OK = 0, 315 KSMBD_TREE_CONN_STATUS_NOMEM, 316 KSMBD_TREE_CONN_STATUS_NO_SHARE, 317 KSMBD_TREE_CONN_STATUS_NO_USER, 318 KSMBD_TREE_CONN_STATUS_INVALID_USER, 319 KSMBD_TREE_CONN_STATUS_HOST_DENIED = 5, 320 KSMBD_TREE_CONN_STATUS_CONN_EXIST, 321 KSMBD_TREE_CONN_STATUS_TOO_MANY_CONNS, 322 KSMBD_TREE_CONN_STATUS_TOO_MANY_SESSIONS, 323 KSMBD_TREE_CONN_STATUS_ERROR, 324 }; 325 326 /* 327 * User config flags. 328 */ 329 #define KSMBD_USER_FLAG_INVALID (0) 330 #define KSMBD_USER_FLAG_OK BIT(0) 331 #define KSMBD_USER_FLAG_BAD_PASSWORD BIT(1) 332 #define KSMBD_USER_FLAG_BAD_UID BIT(2) 333 #define KSMBD_USER_FLAG_BAD_USER BIT(3) 334 #define KSMBD_USER_FLAG_GUEST_ACCOUNT BIT(4) 335 #define KSMBD_USER_FLAG_DELAY_SESSION BIT(5) 336 337 /* 338 * Share config flags. 339 */ 340 #define KSMBD_SHARE_FLAG_INVALID (0) 341 #define KSMBD_SHARE_FLAG_AVAILABLE BIT(0) 342 #define KSMBD_SHARE_FLAG_BROWSEABLE BIT(1) 343 #define KSMBD_SHARE_FLAG_WRITEABLE BIT(2) 344 #define KSMBD_SHARE_FLAG_READONLY BIT(3) 345 #define KSMBD_SHARE_FLAG_GUEST_OK BIT(4) 346 #define KSMBD_SHARE_FLAG_GUEST_ONLY BIT(5) 347 #define KSMBD_SHARE_FLAG_STORE_DOS_ATTRS BIT(6) 348 #define KSMBD_SHARE_FLAG_OPLOCKS BIT(7) 349 #define KSMBD_SHARE_FLAG_PIPE BIT(8) 350 #define KSMBD_SHARE_FLAG_HIDE_DOT_FILES BIT(9) 351 #define KSMBD_SHARE_FLAG_INHERIT_OWNER BIT(10) 352 #define KSMBD_SHARE_FLAG_STREAMS BIT(11) 353 #define KSMBD_SHARE_FLAG_FOLLOW_SYMLINKS BIT(12) 354 #define KSMBD_SHARE_FLAG_ACL_XATTR BIT(13) 355 #define KSMBD_SHARE_FLAG_UPDATE BIT(14) 356 #define KSMBD_SHARE_FLAG_CROSSMNT BIT(15) 357 358 /* 359 * Tree connect request flags. 360 */ 361 #define KSMBD_TREE_CONN_FLAG_REQUEST_SMB1 (0) 362 #define KSMBD_TREE_CONN_FLAG_REQUEST_IPV6 BIT(0) 363 #define KSMBD_TREE_CONN_FLAG_REQUEST_SMB2 BIT(1) 364 365 /* 366 * Tree connect flags. 367 */ 368 #define KSMBD_TREE_CONN_FLAG_GUEST_ACCOUNT BIT(0) 369 #define KSMBD_TREE_CONN_FLAG_READ_ONLY BIT(1) 370 #define KSMBD_TREE_CONN_FLAG_WRITABLE BIT(2) 371 #define KSMBD_TREE_CONN_FLAG_ADMIN_ACCOUNT BIT(3) 372 #define KSMBD_TREE_CONN_FLAG_UPDATE BIT(4) 373 374 /* 375 * RPC over IPC. 376 */ 377 #define KSMBD_RPC_METHOD_RETURN BIT(0) 378 #define KSMBD_RPC_SRVSVC_METHOD_INVOKE BIT(1) 379 #define KSMBD_RPC_SRVSVC_METHOD_RETURN (KSMBD_RPC_SRVSVC_METHOD_INVOKE | KSMBD_RPC_METHOD_RETURN) 380 #define KSMBD_RPC_WKSSVC_METHOD_INVOKE BIT(2) 381 #define KSMBD_RPC_WKSSVC_METHOD_RETURN (KSMBD_RPC_WKSSVC_METHOD_INVOKE | KSMBD_RPC_METHOD_RETURN) 382 #define KSMBD_RPC_IOCTL_METHOD (BIT(3) | KSMBD_RPC_METHOD_RETURN) 383 #define KSMBD_RPC_OPEN_METHOD BIT(4) 384 #define KSMBD_RPC_WRITE_METHOD BIT(5) 385 #define KSMBD_RPC_READ_METHOD (BIT(6) | KSMBD_RPC_METHOD_RETURN) 386 #define KSMBD_RPC_CLOSE_METHOD BIT(7) 387 #define KSMBD_RPC_RAP_METHOD (BIT(8) | KSMBD_RPC_METHOD_RETURN) 388 #define KSMBD_RPC_RESTRICTED_CONTEXT BIT(9) 389 #define KSMBD_RPC_SAMR_METHOD_INVOKE BIT(10) 390 #define KSMBD_RPC_SAMR_METHOD_RETURN (KSMBD_RPC_SAMR_METHOD_INVOKE | KSMBD_RPC_METHOD_RETURN) 391 #define KSMBD_RPC_LSARPC_METHOD_INVOKE BIT(11) 392 #define KSMBD_RPC_LSARPC_METHOD_RETURN (KSMBD_RPC_LSARPC_METHOD_INVOKE | KSMBD_RPC_METHOD_RETURN) 393 394 /* 395 * RPC status definitions. 396 */ 397 #define KSMBD_RPC_OK 0 398 #define KSMBD_RPC_EBAD_FUNC 0x00000001 399 #define KSMBD_RPC_EACCESS_DENIED 0x00000005 400 #define KSMBD_RPC_EBAD_FID 0x00000006 401 #define KSMBD_RPC_ENOMEM 0x00000008 402 #define KSMBD_RPC_EBAD_DATA 0x0000000D 403 #define KSMBD_RPC_ENOTIMPLEMENTED 0x00000040 404 #define KSMBD_RPC_EINVALID_PARAMETER 0x00000057 405 #define KSMBD_RPC_EMORE_DATA 0x000000EA 406 #define KSMBD_RPC_EINVALID_LEVEL 0x0000007C 407 #define KSMBD_RPC_SOME_NOT_MAPPED 0x00000107 408 409 #define KSMBD_CONFIG_OPT_DISABLED 0 410 #define KSMBD_CONFIG_OPT_ENABLED 1 411 #define KSMBD_CONFIG_OPT_AUTO 2 412 #define KSMBD_CONFIG_OPT_MANDATORY 3 413 414 #endif /* _LINUX_KSMBD_SERVER_H */ 415