source3/smbd/globals.h

   1 /*
   2    Unix SMB/Netbios implementation.
   3    smbd globals
   4    Copyright (C) Stefan Metzmacher 2009
   5    Copyright (C) Jeremy Allison 2010
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 */
  20
  21 #include "system/select.h"
  22 #include "librpc/gen_ndr/smbXsrv.h"
  23
  24 #if defined(HAVE_AIO)
  25 struct aio_extra;
  26 extern struct aio_extra *aio_list_head;
  27 extern struct tevent_signal *aio_signal_event;
  28 extern int aio_pending_size;
  29 extern int outstanding_aio_calls;
  30 #endif
  31
  32 #ifdef USE_DMAPI
  33 struct smbd_dmapi_context;
  34 extern struct smbd_dmapi_context *dmapi_ctx;
  35 #endif
  36
  37 extern bool dfree_broken;
  38
  39 /* how many write cache buffers have been allocated */
  40 extern unsigned int allocated_write_caches;
  41
  42 /* A singleton cache to speed up searching by dev/inode. */
  43 struct fsp_singleton_cache {
  44         files_struct *fsp;
  45         struct file_id id;
  46 };
  47
  48 extern const struct mangle_fns *mangle_fns;
  49
  50 extern unsigned char *chartest;
  51 struct tdb_context;
  52 extern struct tdb_context *tdb_mangled_cache;
  53
  54 /*
  55   this determines how many characters are used from the original filename
  56   in the 8.3 mangled name. A larger value leads to a weaker hash and more collisions.
  57   The largest possible value is 6.
  58 */
  59 extern unsigned mangle_prefix;
  60
  61 struct msg_state;
  62
  63 extern bool logged_ioctl_message;
  64
  65 extern int trans_num;
  66
  67 extern time_t last_smb_conf_reload_time;
  68 extern time_t last_printer_reload_time;
  69 extern pid_t background_lpq_updater_pid;
  70
  71 /****************************************************************************
  72  structure to hold a linked list of queued messages.
  73  for processing.
  74 ****************************************************************************/
  75 extern uint32_t common_flags2;
  76
  77 extern struct smb_trans_enc_state *partial_srv_trans_enc_ctx;
  78 extern struct smb_trans_enc_state *srv_trans_enc_ctx;
  79
  80 struct sec_ctx {
  81         struct security_unix_token ut;
  82         struct security_token *token;
  83 };
  84 /* A stack of security contexts.  We include the current context as being
  85    the first one, so there is room for another MAX_SEC_CTX_DEPTH more. */
  86 extern struct sec_ctx sec_ctx_stack[MAX_SEC_CTX_DEPTH + 1];
  87 extern int sec_ctx_stack_ndx;
  88 extern bool become_uid_done;
  89 extern bool become_gid_done;
  90
  91 extern connection_struct *last_conn;
  92 extern uint16_t last_flags;
  93
  94 extern uint32_t global_client_caps;
  95
  96 extern uint16_t fnf_handle;
  97
  98 struct conn_ctx {
  99         connection_struct *conn;
 100         uint64_t vuid;
 101 };
 102 /* A stack of current_user connection contexts. */
 103 extern struct conn_ctx conn_ctx_stack[MAX_SEC_CTX_DEPTH];
 104 extern int conn_ctx_stack_ndx;
 105
 106 struct vfs_init_function_entry;
 107 extern struct vfs_init_function_entry *backends;
 108 extern char *sparse_buf;
 109 extern char *LastDir;
 110
 111 struct smbd_parent_context;
 112 extern struct smbd_parent_context *am_parent;
 113 extern struct memcache *smbd_memcache_ctx;
 114 extern bool exit_firsttime;
 115
 116 struct tstream_context;
 117 struct smbd_smb2_request;
 118
 119 DATA_BLOB negprot_spnego(TALLOC_CTX *ctx, struct smbd_server_connection *sconn);
 120
 121 void smbd_lock_socket(struct smbd_server_connection *sconn);
 122 void smbd_unlock_socket(struct smbd_server_connection *sconn);
 123
 124 NTSTATUS smbd_do_locking(struct smb_request *req,
 125                          files_struct *fsp,
 126                          uint8_t type,
 127                          int32_t timeout,
 128                          uint16_t num_ulocks,
 129                          struct smbd_lock_element *ulocks,
 130                          uint16_t num_locks,
 131                          struct smbd_lock_element *locks,
 132                          bool *async);
 133
 134 NTSTATUS smbd_do_qfilepathinfo(connection_struct *conn,
 135                                TALLOC_CTX *mem_ctx,
 136                                uint16_t info_level,
 137                                files_struct *fsp,
 138                                struct smb_filename *smb_fname,
 139                                bool delete_pending,
 140                                struct timespec write_time_ts,
 141                                struct ea_list *ea_list,
 142                                int lock_data_count,
 143                                char *lock_data,
 144                                uint16_t flags2,
 145                                unsigned int max_data_bytes,
 146                                char **ppdata,
 147                                unsigned int *pdata_size);
 148
 149 NTSTATUS smbd_do_setfilepathinfo(connection_struct *conn,
 150                                 struct smb_request *req,
 151                                 TALLOC_CTX *mem_ctx,
 152                                 uint16_t info_level,
 153                                 files_struct *fsp,
 154                                 struct smb_filename *smb_fname,
 155                                 char **ppdata, int total_data,
 156                                 int *ret_data_size);
 157
 158 NTSTATUS smbd_do_qfsinfo(connection_struct *conn,
 159                          TALLOC_CTX *mem_ctx,
 160                          uint16_t info_level,
 161                          uint16_t flags2,
 162                          unsigned int max_data_bytes,
 163                          char **ppdata,
 164                          int *ret_data_len);
 165
 166 bool smbd_dirptr_get_entry(TALLOC_CTX *ctx,
 167                            struct dptr_struct *dirptr,
 168                            const char *mask,
 169                            uint32_t dirtype,
 170                            bool dont_descend,
 171                            bool ask_sharemode,
 172                            bool (*match_fn)(TALLOC_CTX *ctx,
 173                                             void *private_data,
 174                                             const char *dname,
 175                                             const char *mask,
 176                                             char **_fname),
 177                            bool (*mode_fn)(TALLOC_CTX *ctx,
 178                                            void *private_data,
 179                                            struct smb_filename *smb_fname,
 180                                            uint32_t *_mode),
 181                            void *private_data,
 182                            char **_fname,
 183                            struct smb_filename **_smb_fname,
 184                            uint32_t *_mode,
 185                            long *_prev_offset);
 186
 187 bool smbd_dirptr_lanman2_entry(TALLOC_CTX *ctx,
 188                                connection_struct *conn,
 189                                struct dptr_struct *dirptr,
 190                                uint16 flags2,
 191                                const char *path_mask,
 192                                uint32 dirtype,
 193                                int info_level,
 194                                int requires_resume_key,
 195                                bool dont_descend,
 196                                bool ask_sharemode,
 197                                uint8_t align,
 198                                bool do_pad,
 199                                char **ppdata,
 200                                char *base_data,
 201                                char *end_data,
 202                                int space_remaining,
 203                                bool *out_of_space,
 204                                bool *got_exact_match,
 205                                int *_last_entry_off,
 206                                struct ea_list *name_list);
 207
 208 NTSTATUS smbd_calculate_access_mask(connection_struct *conn,
 209                                     const struct smb_filename *smb_fname,
 210                                     uint32_t access_mask,
 211                                     uint32_t *access_mask_out);
 212
 213 void smbd_notify_cancel_by_smbreq(const struct smb_request *smbreq);
 214
 215 void smbd_server_connection_terminate_ex(struct smbd_server_connection *sconn,
 216                                          const char *reason,
 217                                          const char *location);
 218 #define smbd_server_connection_terminate(sconn, reason) \
 219         smbd_server_connection_terminate_ex(sconn, reason, __location__)
 220
 221 const char *smb2_opcode_name(uint16_t opcode);
 222 bool smbd_is_smb2_header(const uint8_t *inbuf, size_t size);
 223
 224 void reply_smb2002(struct smb_request *req, uint16_t choice);
 225 void reply_smb20ff(struct smb_request *req, uint16_t choice);
 226 void smbd_smb2_first_negprot(struct smbd_server_connection *sconn,
 227                              const uint8_t *inbuf, size_t size);
 228
 229 NTSTATUS smbd_smb2_request_error_ex(struct smbd_smb2_request *req,
 230                                     NTSTATUS status,
 231                                     DATA_BLOB *info,
 232                                     const char *location);
 233 #define smbd_smb2_request_error(req, status) \
 234         smbd_smb2_request_error_ex(req, status, NULL, __location__)
 235 NTSTATUS smbd_smb2_request_done_ex(struct smbd_smb2_request *req,
 236                                    NTSTATUS status,
 237                                    DATA_BLOB body, DATA_BLOB *dyn,
 238                                    const char *location);
 239 #define smbd_smb2_request_done(req, body, dyn) \
 240         smbd_smb2_request_done_ex(req, NT_STATUS_OK, body, dyn, __location__)
 241
 242 NTSTATUS smbd_smb2_send_oplock_break(struct smbd_server_connection *sconn,
 243                                      uint64_t file_id_persistent,
 244                                      uint64_t file_id_volatile,
 245                                      uint8_t oplock_level);
 246
 247 NTSTATUS smbd_smb2_request_pending_queue(struct smbd_smb2_request *req,
 248                                          struct tevent_req *subreq,
 249                                          uint32_t defer_time);
 250
 251 struct smb_request *smbd_smb2_fake_smb_request(struct smbd_smb2_request *req);
 252 void remove_smb2_chained_fsp(files_struct *fsp);
 253
 254 NTSTATUS smbd_smb2_request_verify_creditcharge(struct smbd_smb2_request *req,
 255                                                uint32_t data_length);
 256
 257 NTSTATUS smbd_smb2_request_verify_sizes(struct smbd_smb2_request *req,
 258                                         size_t expected_body_size);
 259
 260 NTSTATUS smbd_smb2_request_process_negprot(struct smbd_smb2_request *req);
 261 NTSTATUS smbd_smb2_request_process_sesssetup(struct smbd_smb2_request *req);
 262 NTSTATUS smbd_smb2_request_process_logoff(struct smbd_smb2_request *req);
 263 NTSTATUS smbd_smb2_request_process_tcon(struct smbd_smb2_request *req);
 264 NTSTATUS smbd_smb2_request_process_tdis(struct smbd_smb2_request *req);
 265 NTSTATUS smbd_smb2_request_process_create(struct smbd_smb2_request *req);
 266 NTSTATUS smbd_smb2_request_process_close(struct smbd_smb2_request *req);
 267 NTSTATUS smbd_smb2_request_process_flush(struct smbd_smb2_request *req);
 268 NTSTATUS smbd_smb2_request_process_read(struct smbd_smb2_request *req);
 269 NTSTATUS smb2_read_complete(struct tevent_req *req, ssize_t nread, int err);
 270 NTSTATUS smbd_smb2_request_process_write(struct smbd_smb2_request *req);
 271 NTSTATUS smb2_write_complete(struct tevent_req *req, ssize_t nwritten, int err);
 272 NTSTATUS smbd_smb2_request_process_lock(struct smbd_smb2_request *req);
 273 NTSTATUS smbd_smb2_request_process_ioctl(struct smbd_smb2_request *req);
 274 NTSTATUS smbd_smb2_request_process_keepalive(struct smbd_smb2_request *req);
 275 NTSTATUS smbd_smb2_request_process_find(struct smbd_smb2_request *req);
 276 NTSTATUS smbd_smb2_request_process_notify(struct smbd_smb2_request *req);
 277 NTSTATUS smbd_smb2_request_process_getinfo(struct smbd_smb2_request *req);
 278 NTSTATUS smbd_smb2_request_process_setinfo(struct smbd_smb2_request *req);
 279 NTSTATUS smbd_smb2_request_process_break(struct smbd_smb2_request *req);
 280 NTSTATUS smbd_smb2_request_dispatch(struct smbd_smb2_request *req);
 281 void smbd_smb2_request_dispatch_immediate(struct tevent_context *ctx,
 282                                 struct tevent_immediate *im,
 283                                 void *private_data);
 284
 285 /* SMB1 -> SMB2 glue. */
 286 void send_break_message_smb2(files_struct *fsp, int level);
 287 struct blocking_lock_record *get_pending_smb2req_blr(struct smbd_smb2_request *smb2req);
 288 bool push_blocking_lock_request_smb2( struct byte_range_lock *br_lck,
 289                                 struct smb_request *req,
 290                                 files_struct *fsp,
 291                                 int lock_timeout,
 292                                 int lock_num,
 293                                 uint64_t smblctx,
 294                                 enum brl_type lock_type,
 295                                 enum brl_flavour lock_flav,
 296                                 uint64_t offset,
 297                                 uint64_t count,
 298                                 uint64_t blocking_smblctx);
 299 void process_blocking_lock_queue_smb2(
 300         struct smbd_server_connection *sconn, struct timeval tv_curr);
 301 void cancel_pending_lock_requests_by_fid_smb2(files_struct *fsp,
 302                         struct byte_range_lock *br_lck,
 303                         enum file_close_type close_type);
 304 /* From smbd/smb2_create.c */
 305 int map_smb2_oplock_levels_to_samba(uint8_t in_oplock_level);
 306 bool get_deferred_open_message_state_smb2(struct smbd_smb2_request *smb2req,
 307                         struct timeval *p_request_time,
 308                         void **pp_state);
 309 bool open_was_deferred_smb2(struct smbd_server_connection *sconn,
 310                             uint64_t mid);
 311 void remove_deferred_open_message_smb2(
 312         struct smbd_server_connection *sconn, uint64_t mid);
 313 bool schedule_deferred_open_message_smb2(
 314         struct smbd_server_connection *sconn, uint64_t mid);
 315 bool push_deferred_open_message_smb2(struct smbd_smb2_request *smb2req,
 316                         struct timeval request_time,
 317                         struct timeval timeout,
 318                         struct file_id id,
 319                         char *private_data,
 320                         size_t priv_len);
 321
 322 struct smbXsrv_connection {
 323         struct smbd_server_connection *sconn;
 324
 325         const struct tsocket_address *local_address;
 326         const struct tsocket_address *remote_address;
 327         const char *remote_hostname;
 328
 329         struct tevent_context *ev_ctx;
 330         struct messaging_context *msg_ctx;
 331
 332         enum protocol_types protocol;
 333
 334         struct {
 335                 struct {
 336                         uint32_t capabilities;
 337                         struct GUID guid;
 338                         uint16_t security_mode;
 339                         uint16_t num_dialects;
 340                         uint16_t *dialects;
 341                 } client;
 342                 struct {
 343                         uint32_t capabilities;
 344                         struct GUID guid;
 345                         uint16_t security_mode;
 346                         uint16_t dialect;
 347                         uint32_t max_trans;
 348                         uint32_t max_read;
 349                         uint32_t max_write;
 350                 } server;
 351         } smb2;
 352
 353         struct msg_state *msg_state;
 354
 355         uint64_t smbd_idle_profstamp;
 356
 357         /*
 358          * this session_table is used for SMB1 and SMB2,
 359          */
 360         struct smbXsrv_session_table *session_table;
 361         /*
 362          * this tcon_table is only used for SMB1.
 363          */
 364         struct smbXsrv_tcon_table *tcon_table;
 365         /*
 366          * this open_table is used for SMB1 and SMB2,
 367          * because we have a global sconn->real_max_open_files
 368          * limit.
 369          */
 370         struct smbXsrv_open_table *open_table;
 371 };
 372
 373 NTSTATUS smbXsrv_version_global_init(const struct server_id *server_id);
 374 uint32_t smbXsrv_version_global_current(void);
 375
 376 NTSTATUS smbXsrv_connection_init_tables(struct smbXsrv_connection *conn,
 377                                         enum protocol_types protocol);
 378
 379 NTSTATUS smbXsrv_session_global_init(void);
 380 NTSTATUS smbXsrv_session_create(struct smbXsrv_connection *conn,
 381                                 NTTIME now,
 382                                 struct smbXsrv_session **_session);
 383 NTSTATUS smbXsrv_session_update(struct smbXsrv_session *session);
 384 NTSTATUS smbXsrv_session_logoff(struct smbXsrv_session *session);
 385 NTSTATUS smbXsrv_session_logoff_all(struct smbXsrv_connection *conn);
 386 NTSTATUS smb1srv_session_table_init(struct smbXsrv_connection *conn);
 387 NTSTATUS smb1srv_session_lookup(struct smbXsrv_connection *conn,
 388                                 uint16_t vuid, NTTIME now,
 389                                 struct smbXsrv_session **session);
 390 NTSTATUS smb2srv_session_table_init(struct smbXsrv_connection *conn);
 391 NTSTATUS smb2srv_session_lookup(struct smbXsrv_connection *conn,
 392                                 uint64_t session_id, NTTIME now,
 393                                 struct smbXsrv_session **session);
 394 struct tevent_req *smb2srv_session_close_previous_send(TALLOC_CTX *mem_ctx,
 395                                         struct tevent_context *ev,
 396                                         struct smbXsrv_connection *conn,
 397                                         struct auth_session_info *session_info,
 398                                         uint64_t previous_session_id,
 399                                         uint64_t current_session_id);
 400 NTSTATUS smb2srv_session_close_previous_recv(struct tevent_req *req);
 401
 402 NTSTATUS smbXsrv_tcon_global_init(void);
 403 NTSTATUS smbXsrv_tcon_update(struct smbXsrv_tcon *tcon);
 404 NTSTATUS smbXsrv_tcon_disconnect(struct smbXsrv_tcon *tcon, uint64_t vuid);
 405 NTSTATUS smb1srv_tcon_table_init(struct smbXsrv_connection *conn);
 406 NTSTATUS smb1srv_tcon_create(struct smbXsrv_connection *conn,
 407                              NTTIME now,
 408                              struct smbXsrv_tcon **_tcon);
 409 NTSTATUS smb1srv_tcon_lookup(struct smbXsrv_connection *conn,
 410                              uint16_t tree_id, NTTIME now,
 411                              struct smbXsrv_tcon **tcon);
 412 NTSTATUS smb1srv_tcon_disconnect_all(struct smbXsrv_connection *conn);
 413 NTSTATUS smb2srv_tcon_table_init(struct smbXsrv_session *session);
 414 NTSTATUS smb2srv_tcon_create(struct smbXsrv_session *session,
 415                              NTTIME now,
 416                              struct smbXsrv_tcon **_tcon);
 417 NTSTATUS smb2srv_tcon_lookup(struct smbXsrv_session *session,
 418                              uint32_t tree_id, NTTIME now,
 419                              struct smbXsrv_tcon **tcon);
 420 NTSTATUS smb2srv_tcon_disconnect_all(struct smbXsrv_session *session);
 421
 422 NTSTATUS smbXsrv_open_global_init(void);
 423 NTSTATUS smbXsrv_open_create(struct smbXsrv_connection *conn,
 424                              struct auth_session_info *session_info,
 425                              NTTIME now,
 426                              struct smbXsrv_open **_open);
 427 uint32_t smbXsrv_open_hash(struct smbXsrv_open *_open);
 428 NTSTATUS smbXsrv_open_update(struct smbXsrv_open *_open);
 429 NTSTATUS smbXsrv_open_close(struct smbXsrv_open *op, NTTIME now);
 430 NTSTATUS smb1srv_open_table_init(struct smbXsrv_connection *conn);
 431 NTSTATUS smb1srv_open_lookup(struct smbXsrv_connection *conn,
 432                              uint16_t fnum, NTTIME now,
 433                              struct smbXsrv_open **_open);
 434 NTSTATUS smb2srv_open_table_init(struct smbXsrv_connection *conn);
 435 NTSTATUS smb2srv_open_lookup(struct smbXsrv_connection *conn,
 436                              uint64_t persistent_id,
 437                              uint64_t volatile_id,
 438                              NTTIME now,
 439                              struct smbXsrv_open **_open);
 440
 441 struct smbd_smb2_request {
 442         struct smbd_smb2_request *prev, *next;
 443
 444         TALLOC_CTX *mem_pool;
 445         struct smbd_smb2_request **parent;
 446
 447         struct smbd_server_connection *sconn;
 448
 449         /* the session the request operates on, maybe NULL */
 450         struct smbXsrv_session *session;
 451         uint64_t last_session_id;
 452
 453         /* the tcon the request operates on, maybe NULL */
 454         struct smbXsrv_tcon *tcon;
 455         uint32_t last_tid;
 456
 457         int current_idx;
 458         bool do_signing;
 459         struct tevent_timer *async_te;
 460         bool cancelled;
 461         bool compound_related;
 462
 463         struct timeval request_time;
 464
 465         /* fake smb1 request. */
 466         struct smb_request *smb1req;
 467         struct files_struct *compat_chain_fsp;
 468
 469         NTSTATUS next_status;
 470
 471         /*
 472          * The sub request for async backend calls.
 473          * This is used for SMB2 Cancel.
 474          */
 475         struct tevent_req *subreq;
 476
 477         struct {
 478                 /* the NBT header is not allocated */
 479                 uint8_t nbt_hdr[4];
 480                 /*
 481                  * vector[0] NBT
 482                  * .
 483                  * vector[1] SMB2
 484                  * vector[2] fixed body
 485                  * vector[3] dynamic body
 486                  * .
 487                  * .
 488                  * .
 489                  * vector[4] SMB2
 490                  * vector[5] fixed body
 491                  * vector[6] dynamic body
 492                  * .
 493                  * .
 494                  * .
 495                  */
 496                 struct iovec *vector;
 497                 int vector_count;
 498         } in;
 499         struct {
 500                 /* the NBT header is not allocated */
 501                 uint8_t nbt_hdr[4];
 502                 /*
 503                  * vector[0] NBT
 504                  * .
 505                  * vector[1] SMB2
 506                  * vector[2] fixed body
 507                  * vector[3] dynamic body
 508                  * .
 509                  * .
 510                  * .
 511                  * vector[4] SMB2
 512                  * vector[5] fixed body
 513                  * vector[6] dynamic body
 514                  * .
 515                  * .
 516                  * .
 517                  */
 518                 struct iovec *vector;
 519                 int vector_count;
 520         } out;
 521 };
 522
 523 struct smbd_server_connection;
 524 struct user_struct;
 525
 526 struct pending_message_list;
 527 struct pending_auth_data;
 528
 529 struct user_struct {
 530         struct user_struct *next, *prev;
 531         uint64_t vuid; /* Tag for this entry. */
 532
 533         char *session_keystr; /* used by utmp and pam session code.
 534                                  TDB key string */
 535         int homes_snum;
 536
 537         struct auth_session_info *session_info;
 538
 539         struct smbXsrv_session *session;
 540 };
 541
 542 struct smbd_server_connection {
 543         int sock;
 544         const struct tsocket_address *local_address;
 545         const struct tsocket_address *remote_address;
 546         const char *remote_hostname;
 547         struct tevent_context *ev_ctx;
 548         struct messaging_context *msg_ctx;
 549         struct sys_notify_context *sys_notify_ctx;
 550         struct notify_context *notify_ctx;
 551         struct {
 552                 bool got_session;
 553         } nbt;
 554         bool using_smb2;
 555         int trans_num;
 556
 557         size_t num_users;
 558         struct user_struct *users;
 559
 560         size_t num_connections;
 561         struct connection_struct *connections;
 562
 563         size_t num_files;
 564         struct files_struct *files;
 565
 566         int real_max_open_files;
 567         struct fsp_singleton_cache fsp_fi_cache;
 568
 569         struct pending_message_list *deferred_open_queue;
 570
 571
 572         /* open directory handles. */
 573         struct {
 574                 struct bitmap *dptr_bmap;
 575                 struct dptr_struct *dirptrs;
 576                 int dirhandles_open;
 577         } searches;
 578
 579         uint64_t num_requests;
 580
 581         /* Current number of oplocks we have outstanding. */
 582         struct {
 583                 int32_t exclusive_open;
 584                 int32_t level_II_open;
 585                 struct kernel_oplocks *kernel_ops;
 586         } oplocks;
 587
 588         struct {
 589                 struct fd_event *fde;
 590
 591                 struct {
 592                         /*
 593                          * fd for the fcntl lock mutexing access to our sock
 594                          */
 595                         int socket_lock_fd;
 596
 597                         /*
 598                          * fd for the trusted pipe from
 599                          * echo handler child
 600                          */
 601                         int trusted_fd;
 602
 603                         /*
 604                          * fde for the trusted_fd
 605                          */
 606                         struct fd_event *trusted_fde;
 607
 608                         /*
 609                          * Reference count for the fcntl lock to
 610                          * allow recursive locks.
 611                          */
 612                         int ref_count;
 613                 } echo_handler;
 614
 615                 struct {
 616                         bool encrypted_passwords;
 617                         bool spnego;
 618                         struct auth4_context *auth_context;
 619                         bool done;
 620                         /*
 621                          * Size of the data we can receive. Set by us.
 622                          * Can be modified by the max xmit parameter.
 623                          */
 624                         int max_recv;
 625                 } negprot;
 626
 627                 struct {
 628                         uint16_t client_major;
 629                         uint16_t client_minor;
 630                         uint32_t client_cap_low;
 631                         uint32_t client_cap_high;
 632                 } unix_info;
 633
 634                 struct {
 635                         bool done_sesssetup;
 636                         /*
 637                          * Size of data we can send to client. Set
 638                          *  by the client for all protocols above CORE.
 639                          *  Set by us for CORE protocol.
 640                          */
 641                         int max_send;
 642                         uint64_t last_session_tag;
 643                 } sessions;
 644                 struct smb_signing_state *signing_state;
 645
 646                 struct notify_mid_map *notify_mid_maps;
 647
 648                 struct {
 649                         /* dlink list we store pending lock records on. */
 650                         struct blocking_lock_record *blocking_lock_queue;
 651                         /* dlink list we move cancelled lock records onto. */
 652                         struct blocking_lock_record *blocking_lock_cancelled_queue;
 653
 654                         /* The event that makes us process our blocking lock queue */
 655                         struct timed_event *brl_timeout;
 656
 657                         bool blocking_lock_unlock_state;
 658                         bool blocking_lock_cancel_state;
 659                 } locks;
 660         } smb1;
 661         struct {
 662                 struct tevent_queue *recv_queue;
 663                 struct tevent_queue *send_queue;
 664                 struct tstream_context *stream;
 665                 bool negprot_2ff;
 666                 struct {
 667                         /* The event that makes us process our blocking lock queue */
 668                         struct timed_event *brl_timeout;
 669                         bool blocking_lock_unlock_state;
 670                 } locks;
 671                 struct smbd_smb2_request *requests;
 672                 /*
 673                  * seqnum_low is the lowest sequence number
 674                  * we will accept.
 675                  */
 676                 uint64_t seqnum_low;
 677                 /*
 678                  * seqnum_range is the range of credits we have
 679                  * granted from the sequence windows starting
 680                  * at seqnum_low.
 681                  *
 682                  * This gets incremented when new credits are
 683                  * granted and gets decremented when the
 684                  * lowest sequence number is consumed
 685                  * (when seqnum_low gets incremented).
 686                  */
 687                 uint16_t seqnum_range;
 688                 /*
 689                  * credits_grantedThe number of credits we have currently granted
 690                  * to the client.
 691                  *
 692                  * This gets incremented when new credits are
 693                  * granted and gets decremented when any credit
 694                  * is comsumed.
 695                  *
 696                  * Note: the decrementing is different compared
 697                  *       to seqnum_range.
 698                  */
 699                 uint16_t credits_granted;
 700                 /*
 701                  * The maximum number of credits we will ever
 702                  * grant to the client.
 703                  *
 704                  * Typically we will only grant 1/16th of
 705                  * max_credits.
 706                  *
 707                  * This is the "server max credits" parameter.
 708                  */
 709                 uint16_t max_credits;
 710                 /*
 711                  * a bitmap of size max_credits
 712                  */
 713                 struct bitmap *credits_bitmap;
 714                 bool supports_multicredit;
 715                 uint32_t max_trans;
 716                 uint32_t max_read;
 717                 uint32_t max_write;
 718                 bool compound_related_in_progress;
 719         } smb2;
 720
 721         struct smbXsrv_connection *conn;
 722 };
 723
 724 extern struct smbXsrv_connection *global_smbXsrv_connection;
 725
 726 void smbd_init_globals(void);