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