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
  23 #if defined(WITH_AIO)
  24 struct aio_extra;
  25 extern struct aio_extra *aio_list_head;
  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 extern struct msg_state *smbd_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 /****************************************************************************
  70  structure to hold a linked list of queued messages.
  71  for processing.
  72 ****************************************************************************/
  73 struct pending_message_list;
  74 extern struct pending_message_list *deferred_open_queue;
  75 extern uint32_t common_flags2;
  76
  77 struct smb_srv_trans_enc_ctx;
  78 extern struct smb_srv_trans_enc_ctx *partial_srv_trans_enc_ctx;
  79 extern struct smb_srv_trans_enc_ctx *srv_trans_enc_ctx;
  80
  81 struct sec_ctx {
  82         struct security_unix_token ut;
  83         struct security_token *token;
  84 };
  85 /* A stack of security contexts.  We include the current context as being
  86    the first one, so there is room for another MAX_SEC_CTX_DEPTH more. */
  87 extern struct sec_ctx sec_ctx_stack[MAX_SEC_CTX_DEPTH + 1];
  88 extern int sec_ctx_stack_ndx;
  89 extern bool become_uid_done;
  90 extern bool become_gid_done;
  91
  92 extern connection_struct *last_conn;
  93 extern uint16_t last_flags;
  94
  95 extern uint32_t global_client_caps;
  96
  97 extern uint16_t fnf_handle;
  98
  99 struct conn_ctx {
 100         connection_struct *conn;
 101         uint16 vuid;
 102 };
 103 /* A stack of current_user connection contexts. */
 104 extern struct conn_ctx conn_ctx_stack[MAX_SEC_CTX_DEPTH];
 105 extern int conn_ctx_stack_ndx;
 106
 107 struct vfs_init_function_entry;
 108 extern struct vfs_init_function_entry *backends;
 109 extern char *sparse_buf;
 110 extern char *LastDir;
 111
 112 /* Current number of oplocks we have outstanding. */
 113 extern int32_t exclusive_oplocks_open;
 114 extern int32_t level_II_oplocks_open;
 115 extern struct kernel_oplocks *koplocks;
 116
 117 extern int am_parent;
 118 extern struct event_context *smbd_event_ctx;
 119 extern struct messaging_context *smbd_msg_ctx;
 120 extern struct memcache *smbd_memcache_ctx;
 121 extern bool exit_firsttime;
 122 struct child_pid;
 123 extern struct child_pid *children;
 124 extern int num_children;
 125
 126 struct tstream_context;
 127 struct smbd_smb2_request;
 128 struct smbd_smb2_session;
 129 struct smbd_smb2_tcon;
 130
 131 DATA_BLOB negprot_spnego(TALLOC_CTX *ctx, struct smbd_server_connection *sconn);
 132
 133 void smbd_lock_socket(struct smbd_server_connection *sconn);
 134 void smbd_unlock_socket(struct smbd_server_connection *sconn);
 135
 136 NTSTATUS smb2_signing_sign_pdu(DATA_BLOB session_key,
 137                                struct iovec *vector,
 138                                int count);
 139 NTSTATUS smb2_signing_check_pdu(DATA_BLOB session_key,
 140                                 const struct iovec *vector,
 141                                 int count);
 142
 143 NTSTATUS smbd_do_locking(struct smb_request *req,
 144                          files_struct *fsp,
 145                          uint8_t type,
 146                          int32_t timeout,
 147                          uint16_t num_ulocks,
 148                          struct smbd_lock_element *ulocks,
 149                          uint16_t num_locks,
 150                          struct smbd_lock_element *locks,
 151                          bool *async);
 152
 153 NTSTATUS smbd_do_qfilepathinfo(connection_struct *conn,
 154                                TALLOC_CTX *mem_ctx,
 155                                uint16_t info_level,
 156                                files_struct *fsp,
 157                                struct smb_filename *smb_fname,
 158                                bool delete_pending,
 159                                struct timespec write_time_ts,
 160                                struct ea_list *ea_list,
 161                                int lock_data_count,
 162                                char *lock_data,
 163                                uint16_t flags2,
 164                                unsigned int max_data_bytes,
 165                                size_t *fixed_portion,
 166                                char **ppdata,
 167                                unsigned int *pdata_size);
 168
 169 NTSTATUS smbd_do_setfilepathinfo(connection_struct *conn,
 170                                 struct smb_request *req,
 171                                 TALLOC_CTX *mem_ctx,
 172                                 uint16_t info_level,
 173                                 files_struct *fsp,
 174                                 struct smb_filename *smb_fname,
 175                                 char **ppdata, int total_data,
 176                                 int *ret_data_size);
 177
 178 NTSTATUS smbd_do_qfsinfo(connection_struct *conn,
 179                          TALLOC_CTX *mem_ctx,
 180                          uint16_t info_level,
 181                          uint16_t flags2,
 182                          unsigned int max_data_bytes,
 183                          size_t *fixed_portion,
 184                          struct smb_filename *smb_fname,
 185                          char **ppdata,
 186                          int *ret_data_len);
 187
 188 bool smbd_dirptr_get_entry(TALLOC_CTX *ctx,
 189                            struct dptr_struct *dirptr,
 190                            const char *mask,
 191                            uint32_t dirtype,
 192                            bool dont_descend,
 193                            bool ask_sharemode,
 194                            bool (*match_fn)(TALLOC_CTX *ctx,
 195                                             void *private_data,
 196                                             const char *dname,
 197                                             const char *mask,
 198                                             char **_fname),
 199                            bool (*mode_fn)(TALLOC_CTX *ctx,
 200                                            void *private_data,
 201                                            struct smb_filename *smb_fname,
 202                                            uint32_t *_mode),
 203                            void *private_data,
 204                            char **_fname,
 205                            struct smb_filename **_smb_fname,
 206                            uint32_t *_mode,
 207                            long *_prev_offset);
 208
 209 bool smbd_dirptr_lanman2_entry(TALLOC_CTX *ctx,
 210                                connection_struct *conn,
 211                                struct dptr_struct *dirptr,
 212                                uint16 flags2,
 213                                const char *path_mask,
 214                                uint32 dirtype,
 215                                int info_level,
 216                                int requires_resume_key,
 217                                bool dont_descend,
 218                                bool ask_sharemode,
 219                                uint8_t align,
 220                                bool do_pad,
 221                                char **ppdata,
 222                                char *base_data,
 223                                char *end_data,
 224                                int space_remaining,
 225                                bool *out_of_space,
 226                                bool *got_exact_match,
 227                                int *_last_entry_off,
 228                                struct ea_list *name_list);
 229
 230 NTSTATUS smbd_calculate_access_mask(connection_struct *conn,
 231                                     const struct smb_filename *smb_fname,
 232                                     bool file_existed,
 233                                     uint32_t access_mask,
 234                                     uint32_t *access_mask_out);
 235 NTSTATUS smbd_check_open_rights(struct connection_struct *conn,
 236                                 const struct smb_filename *smb_fname,
 237                                 uint32_t access_mask,
 238                                 uint32_t *access_granted);
 239
 240 void smbd_notify_cancel_by_smbreq(const struct smb_request *smbreq);
 241
 242 void smbd_server_connection_terminate_ex(struct smbd_server_connection *sconn,
 243                                          const char *reason,
 244                                          const char *location);
 245 #define smbd_server_connection_terminate(sconn, reason) \
 246         smbd_server_connection_terminate_ex(sconn, reason, __location__)
 247
 248 struct server_id sconn_server_id(const struct smbd_server_connection *sconn);
 249
 250 const char *smb2_opcode_name(uint16_t opcode);
 251 bool smbd_is_smb2_header(const uint8_t *inbuf, size_t size);
 252
 253 void reply_smb2002(struct smb_request *req, uint16_t choice);
 254 void smbd_smb2_first_negprot(struct smbd_server_connection *sconn,
 255                              const uint8_t *inbuf, size_t size);
 256
 257 NTSTATUS smbd_smb2_request_error_ex(struct smbd_smb2_request *req,
 258                                     NTSTATUS status,
 259                                     DATA_BLOB *info,
 260                                     const char *location);
 261 #define smbd_smb2_request_error(req, status) \
 262         smbd_smb2_request_error_ex(req, status, NULL, __location__)
 263 NTSTATUS smbd_smb2_request_done_ex(struct smbd_smb2_request *req,
 264                                    NTSTATUS status,
 265                                    DATA_BLOB body, DATA_BLOB *dyn,
 266                                    const char *location);
 267 #define smbd_smb2_request_done(req, body, dyn) \
 268         smbd_smb2_request_done_ex(req, NT_STATUS_OK, body, dyn, __location__)
 269
 270 NTSTATUS smbd_smb2_send_oplock_break(struct smbd_server_connection *sconn,
 271                                      uint64_t file_id_persistent,
 272                                      uint64_t file_id_volatile,
 273                                      uint8_t oplock_level);
 274
 275 NTSTATUS smbd_smb2_request_pending_queue(struct smbd_smb2_request *req,
 276                                          struct tevent_req *subreq);
 277
 278 NTSTATUS smbd_smb2_request_check_session(struct smbd_smb2_request *req);
 279 NTSTATUS smbd_smb2_request_check_tcon(struct smbd_smb2_request *req);
 280
 281 struct smb_request *smbd_smb2_fake_smb_request(struct smbd_smb2_request *req);
 282 void remove_smb2_chained_fsp(files_struct *fsp);
 283
 284 NTSTATUS smbd_smb2_request_verify_sizes(struct smbd_smb2_request *req,
 285                                         size_t expected_body_size);
 286
 287 NTSTATUS smbd_smb2_request_process_negprot(struct smbd_smb2_request *req);
 288 NTSTATUS smbd_smb2_request_process_sesssetup(struct smbd_smb2_request *req);
 289 NTSTATUS smbd_smb2_request_process_logoff(struct smbd_smb2_request *req);
 290 NTSTATUS smbd_smb2_request_process_tcon(struct smbd_smb2_request *req);
 291 NTSTATUS smbd_smb2_request_process_tdis(struct smbd_smb2_request *req);
 292 NTSTATUS smbd_smb2_request_process_create(struct smbd_smb2_request *req);
 293 NTSTATUS smbd_smb2_request_process_close(struct smbd_smb2_request *req);
 294 NTSTATUS smbd_smb2_request_process_flush(struct smbd_smb2_request *req);
 295 NTSTATUS smbd_smb2_request_process_read(struct smbd_smb2_request *req);
 296 NTSTATUS smb2_read_complete(struct tevent_req *req, ssize_t nread, int err);
 297 NTSTATUS smbd_smb2_request_process_write(struct smbd_smb2_request *req);
 298 NTSTATUS smb2_write_complete(struct tevent_req *req, ssize_t nwritten, int err);
 299 NTSTATUS smbd_smb2_request_process_lock(struct smbd_smb2_request *req);
 300 NTSTATUS smbd_smb2_request_process_ioctl(struct smbd_smb2_request *req);
 301 NTSTATUS smbd_smb2_request_process_keepalive(struct smbd_smb2_request *req);
 302 NTSTATUS smbd_smb2_request_process_find(struct smbd_smb2_request *req);
 303 NTSTATUS smbd_smb2_request_process_notify(struct smbd_smb2_request *req);
 304 NTSTATUS smbd_smb2_request_process_getinfo(struct smbd_smb2_request *req);
 305 NTSTATUS smbd_smb2_request_process_setinfo(struct smbd_smb2_request *req);
 306 NTSTATUS smbd_smb2_request_process_break(struct smbd_smb2_request *req);
 307 NTSTATUS smbd_smb2_request_dispatch(struct smbd_smb2_request *req);
 308 void smbd_smb2_request_dispatch_immediate(struct tevent_context *ctx,
 309                                 struct tevent_immediate *im,
 310                                 void *private_data);
 311
 312 /* SMB1 -> SMB2 glue. */
 313 void send_break_message_smb2(files_struct *fsp, int level);
 314 struct blocking_lock_record *get_pending_smb2req_blr(struct smbd_smb2_request *smb2req);
 315 bool push_blocking_lock_request_smb2( struct byte_range_lock *br_lck,
 316                                 struct smb_request *req,
 317                                 files_struct *fsp,
 318                                 int lock_timeout,
 319                                 int lock_num,
 320                                 uint64_t smblctx,
 321                                 enum brl_type lock_type,
 322                                 enum brl_flavour lock_flav,
 323                                 uint64_t offset,
 324                                 uint64_t count,
 325                                 uint64_t blocking_smblctx);
 326 void process_blocking_lock_queue_smb2(
 327         struct smbd_server_connection *sconn, struct timeval tv_curr);
 328 void cancel_pending_lock_requests_by_fid_smb2(files_struct *fsp,
 329                         struct byte_range_lock *br_lck,
 330                         enum file_close_type close_type);
 331 /* From smbd/smb2_create.c */
 332 int map_smb2_oplock_levels_to_samba(uint8_t in_oplock_level);
 333 bool get_deferred_open_message_state_smb2(struct smbd_smb2_request *smb2req,
 334                         struct timeval *p_request_time,
 335                         void **pp_state);
 336 bool open_was_deferred_smb2(struct smbd_server_connection *sconn,
 337                             uint64_t mid);
 338 void remove_deferred_open_message_smb2(
 339         struct smbd_server_connection *sconn, uint64_t mid);
 340 void schedule_deferred_open_message_smb2(
 341         struct smbd_server_connection *sconn, uint64_t mid);
 342 bool push_deferred_open_message_smb2(struct smbd_smb2_request *smb2req,
 343                         struct timeval request_time,
 344                         struct timeval timeout,
 345                         struct file_id id,
 346                         char *private_data,
 347                         size_t priv_len);
 348
 349 struct smbd_smb2_request {
 350         struct smbd_smb2_request *prev, *next;
 351
 352         TALLOC_CTX *mem_pool;
 353         struct smbd_smb2_request **parent;
 354
 355         struct smbd_server_connection *sconn;
 356
 357         /* the session the request operates on, maybe NULL */
 358         struct smbd_smb2_session *session;
 359         uint64_t last_session_id;
 360
 361         /* the tcon the request operates on, maybe NULL */
 362         struct smbd_smb2_tcon *tcon;
 363         uint32_t last_tid;
 364
 365         int current_idx;
 366         bool do_signing;
 367         bool async;
 368         bool cancelled;
 369         bool compound_related;
 370
 371         /* fake smb1 request. */
 372         struct smb_request *smb1req;
 373         struct files_struct *compat_chain_fsp;
 374
 375         /*
 376          * The sub request for async backend calls.
 377          * This is used for SMB2 Cancel.
 378          */
 379         struct tevent_req *subreq;
 380
 381         struct {
 382                 /* the NBT header is not allocated */
 383                 uint8_t nbt_hdr[4];
 384                 /*
 385                  * vector[0] NBT
 386                  * .
 387                  * vector[1] SMB2
 388                  * vector[2] fixed body
 389                  * vector[3] dynamic body
 390                  * .
 391                  * .
 392                  * .
 393                  * vector[4] SMB2
 394                  * vector[5] fixed body
 395                  * vector[6] dynamic body
 396                  * .
 397                  * .
 398                  * .
 399                  */
 400                 struct iovec *vector;
 401                 int vector_count;
 402         } in;
 403         struct {
 404                 /* the NBT header is not allocated */
 405                 uint8_t nbt_hdr[4];
 406                 /*
 407                  * vector[0] NBT
 408                  * .
 409                  * vector[1] SMB2
 410                  * vector[2] fixed body
 411                  * vector[3] dynamic body
 412                  * .
 413                  * .
 414                  * .
 415                  * vector[4] SMB2
 416                  * vector[5] fixed body
 417                  * vector[6] dynamic body
 418                  * .
 419                  * .
 420                  * .
 421                  */
 422                 struct iovec *vector;
 423                 int vector_count;
 424         } out;
 425 };
 426
 427 struct smbd_server_connection;
 428
 429 struct smbd_smb2_session {
 430         struct smbd_smb2_session *prev, *next;
 431         struct smbd_server_connection *sconn;
 432         NTSTATUS status;
 433         uint64_t vuid;
 434         struct auth_ntlmssp_state *auth_ntlmssp_state;
 435         struct auth_serversupplied_info *session_info;
 436         DATA_BLOB session_key;
 437         bool do_signing;
 438
 439         user_struct *compat_vuser;
 440
 441         struct {
 442                 /* an id tree used to allocate tids */
 443                 struct idr_context *idtree;
 444
 445                 /* this is the limit of tid values for this connection */
 446                 uint32_t limit;
 447
 448                 struct smbd_smb2_tcon *list;
 449         } tcons;
 450 };
 451
 452 struct smbd_smb2_tcon {
 453         struct smbd_smb2_tcon *prev, *next;
 454         struct smbd_smb2_session *session;
 455         uint32_t tid;
 456         int snum;
 457         connection_struct *compat_conn;
 458 };
 459
 460 struct pending_auth_data;
 461
 462 struct smbd_server_connection {
 463         int sock;
 464         struct client_address client_id;
 465         const struct tsocket_address *local_address;
 466         const struct tsocket_address *remote_address;
 467         struct messaging_context *msg_ctx;
 468         struct {
 469                 bool got_session;
 470         } nbt;
 471         bool using_smb2;
 472         int trans_num;
 473
 474         /*
 475          * Cache for calling poll(2) to avoid allocations in our
 476          * central event loop
 477          */
 478         struct pollfd *pfds;
 479
 480         struct files_struct *files;
 481         struct bitmap *file_bmap;
 482         int real_max_open_files;
 483         int files_used;
 484         struct fsp_singleton_cache fsp_fi_cache;
 485         unsigned long file_gen_counter;
 486         int first_file;
 487
 488         /* number of open connections (tcons) */
 489         int num_tcons_open;
 490
 491         /* open directory handles. */
 492         struct {
 493                 struct bitmap *dptr_bmap;
 494                 struct dptr_struct *dirptrs;
 495                 int dirhandles_open;
 496         } searches;
 497
 498         uint64_t num_requests;
 499
 500         struct {
 501                 struct fd_event *fde;
 502
 503                 struct {
 504                         /*
 505                          * fd for the fcntl lock mutexing access to our sock
 506                          */
 507                         int socket_lock_fd;
 508
 509                         /*
 510                          * fd for the trusted pipe from
 511                          * echo handler child
 512                          */
 513                         int trusted_fd;
 514
 515                         /*
 516                          * fde for the trusted_fd
 517                          */
 518                         struct fd_event *trusted_fde;
 519
 520                         /*
 521                          * Reference count for the fcntl lock to
 522                          * allow recursive locks.
 523                          */
 524                         int ref_count;
 525                 } echo_handler;
 526
 527                 struct {
 528                         bool encrypted_passwords;
 529                         bool spnego;
 530                         struct auth_context *auth_context;
 531                         bool done;
 532                         /*
 533                          * Size of the data we can receive. Set by us.
 534                          * Can be modified by the max xmit parameter.
 535                          */
 536                         int max_recv;
 537                 } negprot;
 538
 539                 struct {
 540                         bool done_sesssetup;
 541                         /*
 542                          * Size of data we can send to client. Set
 543                          *  by the client for all protocols above CORE.
 544                          *  Set by us for CORE protocol.
 545                          */
 546                         int max_send;
 547                         uint16_t last_session_tag;
 548
 549                         /* users from session setup */
 550                         char *session_userlist;
 551                         /* workgroup from session setup. */
 552                         char *session_workgroup;
 553                         /*
 554                          * this holds info on user ids that are already
 555                          * validated for this VC
 556                          */
 557                         user_struct *validated_users;
 558                         uint16_t next_vuid;
 559                         int num_validated_vuids;
 560                 } sessions;
 561                 struct {
 562                         connection_struct *Connections;
 563                         /* number of open connections */
 564                         struct bitmap *bmap;
 565                 } tcons;
 566                 struct smb_signing_state *signing_state;
 567                 /* List to store partial SPNEGO auth fragments. */
 568                 struct pending_auth_data *pd_list;
 569
 570                 struct notify_mid_map *notify_mid_maps;
 571
 572                 struct {
 573                         /* dlink list we store pending lock records on. */
 574                         struct blocking_lock_record *blocking_lock_queue;
 575                         /* dlink list we move cancelled lock records onto. */
 576                         struct blocking_lock_record *blocking_lock_cancelled_queue;
 577
 578                         /* The event that makes us process our blocking lock queue */
 579                         struct timed_event *brl_timeout;
 580
 581                         bool blocking_lock_unlock_state;
 582                         bool blocking_lock_cancel_state;
 583                 } locks;
 584         } smb1;
 585         struct {
 586                 struct tevent_context *event_ctx;
 587                 struct tevent_queue *recv_queue;
 588                 struct tevent_queue *send_queue;
 589                 struct tstream_context *stream;
 590                 struct {
 591                         /* an id tree used to allocate vuids */
 592                         /* this holds info on session vuids that are already
 593                          * validated for this VC */
 594                         struct idr_context *idtree;
 595
 596                         /* this is the limit of vuid values for this connection */
 597                         uint64_t limit;
 598
 599                         struct smbd_smb2_session *list;
 600                 } sessions;
 601                 struct {
 602                         /* The event that makes us process our blocking lock queue */
 603                         struct timed_event *brl_timeout;
 604                         bool blocking_lock_unlock_state;
 605                 } locks;
 606                 struct smbd_smb2_request *requests;
 607                 /*
 608                  * seqnum_low is the lowest sequence number
 609                  * we will accept.
 610                  */
 611                 uint64_t seqnum_low;
 612                 /*
 613                  * seqnum_range is the range of credits we have
 614                  * granted from the sequence windows starting
 615                  * at seqnum_low.
 616                  *
 617                  * This gets incremented when new credits are
 618                  * granted and gets decremented when the
 619                  * lowest sequence number is consumed
 620                  * (when seqnum_low gets incremented).
 621                  */
 622                 uint16_t seqnum_range;
 623                 /*
 624                  * credits_grantedThe number of credits we have currently granted
 625                  * to the client.
 626                  *
 627                  * This gets incremented when new credits are
 628                  * granted and gets decremented when any credit
 629                  * is comsumed.
 630                  *
 631                  * Note: the decrementing is different compared
 632                  *       to seqnum_range.
 633                  */
 634                 uint16_t credits_granted;
 635                 /*
 636                  * The maximum number of credits we will ever
 637                  * grant to the client.
 638                  *
 639                  * Typically we will only grant 1/16th of
 640                  * max_credits.
 641                  *
 642                  * This is the "server max credits" parameter.
 643                  */
 644                 uint16_t max_credits;
 645                 /*
 646                  * a bitmap of size max_credits
 647                  */
 648                 struct bitmap *credits_bitmap;
 649                 uint32_t max_trans;
 650                 uint32_t max_read;
 651                 uint32_t max_write;
 652         } smb2;
 653 };
 654
 655 extern struct smbd_server_connection *smbd_server_conn;
 656
 657 struct smbd_server_connection *msg_ctx_to_sconn(struct messaging_context *msg_ctx);
 658
 659 void smbd_init_globals(void);