2 Unix SMB/Netbios implementation.
4 Copyright (C) Stefan Metzmacher 2009
5 Copyright (C) Jeremy Allison 2010
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.
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.
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/>.
21 #include "system/select.h"
22 #include "librpc/gen_ndr/smbXsrv.h"
24 extern int aio_pending_size;
25 extern int outstanding_aio_calls;
28 struct smbd_dmapi_context;
29 extern struct smbd_dmapi_context *dmapi_ctx;
32 extern bool dfree_broken;
34 /* how many write cache buffers have been allocated */
35 extern unsigned int allocated_write_caches;
37 /* A singleton cache to speed up searching by dev/inode. */
38 struct fsp_singleton_cache {
43 extern const struct mangle_fns *mangle_fns;
45 extern unsigned char *chartest;
47 extern struct tdb_context *tdb_mangled_cache;
50 this determines how many characters are used from the original filename
51 in the 8.3 mangled name. A larger value leads to a weaker hash and more collisions.
52 The largest possible value is 6.
54 extern unsigned mangle_prefix;
58 extern bool logged_ioctl_message;
62 extern time_t last_smb_conf_reload_time;
63 extern time_t last_printer_reload_time;
64 extern pid_t background_lpq_updater_pid;
66 /****************************************************************************
67 structure to hold a linked list of queued messages.
69 ****************************************************************************/
70 extern uint32_t common_flags2;
72 extern struct smb_trans_enc_state *partial_srv_trans_enc_ctx;
73 extern struct smb_trans_enc_state *srv_trans_enc_ctx;
76 struct security_unix_token ut;
77 struct security_token *token;
79 /* A stack of security contexts. We include the current context as being
80 the first one, so there is room for another MAX_SEC_CTX_DEPTH more. */
81 extern struct sec_ctx sec_ctx_stack[MAX_SEC_CTX_DEPTH + 1];
82 extern int sec_ctx_stack_ndx;
83 extern bool become_uid_done;
84 extern bool become_gid_done;
86 extern connection_struct *last_conn;
87 extern uint16_t last_flags;
89 extern uint32_t global_client_caps;
91 extern uint16_t fnf_handle;
94 connection_struct *conn;
97 /* A stack of current_user connection contexts. */
98 extern struct conn_ctx conn_ctx_stack[MAX_SEC_CTX_DEPTH];
99 extern int conn_ctx_stack_ndx;
101 struct vfs_init_function_entry;
102 extern struct vfs_init_function_entry *backends;
103 extern char *sparse_buf;
104 extern char *LastDir;
106 struct smbd_parent_context;
107 extern struct smbd_parent_context *am_parent;
108 extern struct memcache *smbd_memcache_ctx;
109 extern bool exit_firsttime;
111 struct tstream_context;
112 struct smbd_smb2_request;
114 DATA_BLOB negprot_spnego(TALLOC_CTX *ctx, struct smbd_server_connection *sconn);
116 void smbd_lock_socket(struct smbd_server_connection *sconn);
117 void smbd_unlock_socket(struct smbd_server_connection *sconn);
119 NTSTATUS smbd_do_locking(struct smb_request *req,
124 struct smbd_lock_element *ulocks,
126 struct smbd_lock_element *locks,
129 NTSTATUS smbd_do_qfilepathinfo(connection_struct *conn,
133 struct smb_filename *smb_fname,
135 struct timespec write_time_ts,
136 struct ea_list *ea_list,
140 unsigned int max_data_bytes,
142 unsigned int *pdata_size);
144 NTSTATUS smbd_do_setfilepathinfo(connection_struct *conn,
145 struct smb_request *req,
149 struct smb_filename *smb_fname,
150 char **ppdata, int total_data,
153 NTSTATUS smbd_do_qfsinfo(connection_struct *conn,
157 unsigned int max_data_bytes,
161 bool smbd_dirptr_get_entry(TALLOC_CTX *ctx,
162 struct dptr_struct *dirptr,
167 bool (*match_fn)(TALLOC_CTX *ctx,
172 bool (*mode_fn)(TALLOC_CTX *ctx,
174 struct smb_filename *smb_fname,
178 struct smb_filename **_smb_fname,
182 bool smbd_dirptr_lanman2_entry(TALLOC_CTX *ctx,
183 connection_struct *conn,
184 struct dptr_struct *dirptr,
186 const char *path_mask,
189 int requires_resume_key,
199 bool *got_exact_match,
200 int *_last_entry_off,
201 struct ea_list *name_list);
203 NTSTATUS smbd_calculate_access_mask(connection_struct *conn,
204 const struct smb_filename *smb_fname,
206 uint32_t access_mask,
207 uint32_t *access_mask_out);
209 void smbd_notify_cancel_by_smbreq(const struct smb_request *smbreq);
211 void smbd_server_connection_terminate_ex(struct smbd_server_connection *sconn,
213 const char *location);
214 #define smbd_server_connection_terminate(sconn, reason) \
215 smbd_server_connection_terminate_ex(sconn, reason, __location__)
217 const char *smb2_opcode_name(uint16_t opcode);
218 bool smbd_is_smb2_header(const uint8_t *inbuf, size_t size);
220 void reply_smb2002(struct smb_request *req, uint16_t choice);
221 void reply_smb20ff(struct smb_request *req, uint16_t choice);
222 void smbd_smb2_first_negprot(struct smbd_server_connection *sconn,
223 uint8_t *inbuf, size_t size);
225 NTSTATUS smbd_smb2_request_error_ex(struct smbd_smb2_request *req,
228 const char *location);
229 #define smbd_smb2_request_error(req, status) \
230 smbd_smb2_request_error_ex(req, status, NULL, __location__)
231 NTSTATUS smbd_smb2_request_done_ex(struct smbd_smb2_request *req,
233 DATA_BLOB body, DATA_BLOB *dyn,
234 const char *location);
235 #define smbd_smb2_request_done(req, body, dyn) \
236 smbd_smb2_request_done_ex(req, NT_STATUS_OK, body, dyn, __location__)
238 NTSTATUS smbd_smb2_send_oplock_break(struct smbd_server_connection *sconn,
239 struct smbXsrv_session *session,
240 struct smbXsrv_tcon *tcon,
241 struct smbXsrv_open *op,
242 uint8_t oplock_level);
244 NTSTATUS smbd_smb2_request_pending_queue(struct smbd_smb2_request *req,
245 struct tevent_req *subreq,
246 uint32_t defer_time);
248 struct smb_request *smbd_smb2_fake_smb_request(struct smbd_smb2_request *req);
249 void remove_smb2_chained_fsp(files_struct *fsp);
251 NTSTATUS smbd_smb2_request_verify_creditcharge(struct smbd_smb2_request *req,
252 uint32_t data_length);
254 NTSTATUS smbd_smb2_request_verify_sizes(struct smbd_smb2_request *req,
255 size_t expected_body_size);
257 NTSTATUS smbd_smb2_request_process_negprot(struct smbd_smb2_request *req);
258 NTSTATUS smbd_smb2_request_process_sesssetup(struct smbd_smb2_request *req);
259 NTSTATUS smbd_smb2_request_process_logoff(struct smbd_smb2_request *req);
260 NTSTATUS smbd_smb2_request_process_tcon(struct smbd_smb2_request *req);
261 NTSTATUS smbd_smb2_request_process_tdis(struct smbd_smb2_request *req);
262 NTSTATUS smbd_smb2_request_process_create(struct smbd_smb2_request *req);
263 NTSTATUS smbd_smb2_request_process_close(struct smbd_smb2_request *req);
264 NTSTATUS smbd_smb2_request_process_flush(struct smbd_smb2_request *req);
265 NTSTATUS smbd_smb2_request_process_read(struct smbd_smb2_request *req);
266 NTSTATUS smb2_read_complete(struct tevent_req *req, ssize_t nread, int err);
267 NTSTATUS smbd_smb2_request_process_write(struct smbd_smb2_request *req);
268 NTSTATUS smb2_write_complete(struct tevent_req *req, ssize_t nwritten, int err);
269 NTSTATUS smb2_write_complete_nosync(struct tevent_req *req, ssize_t nwritten,
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,
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,
293 enum brl_type lock_type,
294 enum brl_flavour lock_flav,
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,
308 bool open_was_deferred_smb2(struct smbd_server_connection *sconn,
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,
321 struct smbXsrv_connection {
322 struct smbd_server_connection *sconn;
324 const struct tsocket_address *local_address;
325 const struct tsocket_address *remote_address;
326 const char *remote_hostname;
328 struct tevent_context *ev_ctx;
329 struct messaging_context *msg_ctx;
331 enum protocol_types protocol;
335 uint32_t capabilities;
337 uint16_t security_mode;
338 uint16_t num_dialects;
342 uint32_t capabilities;
344 uint16_t security_mode;
352 struct msg_state *msg_state;
355 * Link into libasys for asynchronous operations
357 struct asys_context *asys_ctx;
358 struct tevent_fd *asys_fde;
360 uint64_t smbd_idle_profstamp;
363 * this session_table is used for SMB1 and SMB2,
365 struct smbXsrv_session_table *session_table;
367 * this tcon_table is only used for SMB1.
369 struct smbXsrv_tcon_table *tcon_table;
371 * this open_table is used for SMB1 and SMB2,
372 * because we have a global sconn->real_max_open_files
375 struct smbXsrv_open_table *open_table;
378 NTSTATUS smbXsrv_version_global_init(const struct server_id *server_id);
379 uint32_t smbXsrv_version_global_current(void);
381 NTSTATUS smbXsrv_connection_init_tables(struct smbXsrv_connection *conn,
382 enum protocol_types protocol);
384 NTSTATUS smbXsrv_session_global_init(void);
385 NTSTATUS smbXsrv_session_create(struct smbXsrv_connection *conn,
387 struct smbXsrv_session **_session);
388 NTSTATUS smbXsrv_session_update(struct smbXsrv_session *session);
389 NTSTATUS smbXsrv_session_logoff(struct smbXsrv_session *session);
390 NTSTATUS smbXsrv_session_logoff_all(struct smbXsrv_connection *conn);
391 NTSTATUS smb1srv_session_table_init(struct smbXsrv_connection *conn);
392 NTSTATUS smb1srv_session_lookup(struct smbXsrv_connection *conn,
393 uint16_t vuid, NTTIME now,
394 struct smbXsrv_session **session);
395 NTSTATUS smb2srv_session_table_init(struct smbXsrv_connection *conn);
396 NTSTATUS smb2srv_session_lookup(struct smbXsrv_connection *conn,
397 uint64_t session_id, NTTIME now,
398 struct smbXsrv_session **session);
399 struct tevent_req *smb2srv_session_close_previous_send(TALLOC_CTX *mem_ctx,
400 struct tevent_context *ev,
401 struct smbXsrv_connection *conn,
402 struct auth_session_info *session_info,
403 uint64_t previous_session_id,
404 uint64_t current_session_id);
405 NTSTATUS smb2srv_session_close_previous_recv(struct tevent_req *req);
407 NTSTATUS smbXsrv_tcon_global_init(void);
408 NTSTATUS smbXsrv_tcon_update(struct smbXsrv_tcon *tcon);
409 NTSTATUS smbXsrv_tcon_disconnect(struct smbXsrv_tcon *tcon, uint64_t vuid);
410 NTSTATUS smb1srv_tcon_table_init(struct smbXsrv_connection *conn);
411 NTSTATUS smb1srv_tcon_create(struct smbXsrv_connection *conn,
413 struct smbXsrv_tcon **_tcon);
414 NTSTATUS smb1srv_tcon_lookup(struct smbXsrv_connection *conn,
415 uint16_t tree_id, NTTIME now,
416 struct smbXsrv_tcon **tcon);
417 NTSTATUS smb1srv_tcon_disconnect_all(struct smbXsrv_connection *conn);
418 NTSTATUS smb2srv_tcon_table_init(struct smbXsrv_session *session);
419 NTSTATUS smb2srv_tcon_create(struct smbXsrv_session *session,
421 struct smbXsrv_tcon **_tcon);
422 NTSTATUS smb2srv_tcon_lookup(struct smbXsrv_session *session,
423 uint32_t tree_id, NTTIME now,
424 struct smbXsrv_tcon **tcon);
425 NTSTATUS smb2srv_tcon_disconnect_all(struct smbXsrv_session *session);
427 NTSTATUS smbXsrv_open_global_init(void);
428 NTSTATUS smbXsrv_open_create(struct smbXsrv_connection *conn,
429 struct auth_session_info *session_info,
431 struct smbXsrv_open **_open);
432 uint32_t smbXsrv_open_hash(struct smbXsrv_open *_open);
433 NTSTATUS smbXsrv_open_update(struct smbXsrv_open *_open);
434 NTSTATUS smbXsrv_open_close(struct smbXsrv_open *op, NTTIME now);
435 NTSTATUS smb1srv_open_table_init(struct smbXsrv_connection *conn);
436 NTSTATUS smb1srv_open_lookup(struct smbXsrv_connection *conn,
437 uint16_t fnum, NTTIME now,
438 struct smbXsrv_open **_open);
439 NTSTATUS smb2srv_open_table_init(struct smbXsrv_connection *conn);
440 NTSTATUS smb2srv_open_lookup(struct smbXsrv_connection *conn,
441 uint64_t persistent_id,
442 uint64_t volatile_id,
444 struct smbXsrv_open **_open);
445 NTSTATUS smb2srv_open_recreate(struct smbXsrv_connection *conn,
446 struct auth_session_info *session_info,
447 uint64_t persistent_id,
448 struct GUID create_guid,
450 struct smbXsrv_open **_open);
452 struct smbd_smb2_request {
453 struct smbd_smb2_request *prev, *next;
455 struct smbd_server_connection *sconn;
457 /* the session the request operates on, maybe NULL */
458 struct smbXsrv_session *session;
459 uint64_t last_session_id;
461 /* the tcon the request operates on, maybe NULL */
462 struct smbXsrv_tcon *tcon;
468 struct tevent_timer *async_te;
470 bool compound_related;
473 * the encryption key for the whole
478 * the signing key for the last
479 * request/response of a compound chain
483 struct timeval request_time;
485 /* fake smb1 request. */
486 struct smb_request *smb1req;
487 struct files_struct *compat_chain_fsp;
490 * The sub request for async backend calls.
491 * This is used for SMB2 Cancel.
493 struct tevent_req *subreq;
495 #define SMBD_SMB2_TF_IOV_OFS 0
496 #define SMBD_SMB2_HDR_IOV_OFS 1
497 #define SMBD_SMB2_BODY_IOV_OFS 2
498 #define SMBD_SMB2_DYN_IOV_OFS 3
500 #define SMBD_SMB2_NUM_IOV_PER_REQ 4
502 #define SMBD_SMB2_IOV_IDX_OFS(req,dir,idx,ofs) \
503 (&req->dir.vector[(idx)+(ofs)])
505 #define SMBD_SMB2_IDX_TF_IOV(req,dir,idx) \
506 SMBD_SMB2_IOV_IDX_OFS(req,dir,idx,SMBD_SMB2_TF_IOV_OFS)
507 #define SMBD_SMB2_IDX_HDR_IOV(req,dir,idx) \
508 SMBD_SMB2_IOV_IDX_OFS(req,dir,idx,SMBD_SMB2_HDR_IOV_OFS)
509 #define SMBD_SMB2_IDX_BODY_IOV(req,dir,idx) \
510 SMBD_SMB2_IOV_IDX_OFS(req,dir,idx,SMBD_SMB2_BODY_IOV_OFS)
511 #define SMBD_SMB2_IDX_DYN_IOV(req,dir,idx) \
512 SMBD_SMB2_IOV_IDX_OFS(req,dir,idx,SMBD_SMB2_DYN_IOV_OFS)
514 #define SMBD_SMB2_IN_TF_IOV(req) SMBD_SMB2_IDX_TF_IOV(req,in,req->current_idx)
515 #define SMBD_SMB2_IN_TF_PTR(req) (uint8_t *)(SMBD_SMB2_IN_TF_IOV(req)->iov_base)
516 #define SMBD_SMB2_IN_HDR_IOV(req) SMBD_SMB2_IDX_HDR_IOV(req,in,req->current_idx)
517 #define SMBD_SMB2_IN_HDR_PTR(req) (uint8_t *)(SMBD_SMB2_IN_HDR_IOV(req)->iov_base)
518 #define SMBD_SMB2_IN_BODY_IOV(req) SMBD_SMB2_IDX_BODY_IOV(req,in,req->current_idx)
519 #define SMBD_SMB2_IN_BODY_PTR(req) (uint8_t *)(SMBD_SMB2_IN_BODY_IOV(req)->iov_base)
520 #define SMBD_SMB2_IN_BODY_LEN(req) (SMBD_SMB2_IN_BODY_IOV(req)->iov_len)
521 #define SMBD_SMB2_IN_DYN_IOV(req) SMBD_SMB2_IDX_DYN_IOV(req,in,req->current_idx)
522 #define SMBD_SMB2_IN_DYN_PTR(req) (uint8_t *)(SMBD_SMB2_IN_DYN_IOV(req)->iov_base)
523 #define SMBD_SMB2_IN_DYN_LEN(req) (SMBD_SMB2_IN_DYN_IOV(req)->iov_len)
525 #define SMBD_SMB2_OUT_TF_IOV(req) SMBD_SMB2_IDX_TF_IOV(req,out,req->current_idx)
526 #define SMBD_SMB2_OUT_TF_PTR(req) (uint8_t *)(SMBD_SMB2_OUT_TF_IOV(req)->iov_base)
527 #define SMBD_SMB2_OUT_HDR_IOV(req) SMBD_SMB2_IDX_HDR_IOV(req,out,req->current_idx)
528 #define SMBD_SMB2_OUT_HDR_PTR(req) (uint8_t *)(SMBD_SMB2_OUT_HDR_IOV(req)->iov_base)
529 #define SMBD_SMB2_OUT_BODY_IOV(req) SMBD_SMB2_IDX_BODY_IOV(req,out,req->current_idx)
530 #define SMBD_SMB2_OUT_BODY_PTR(req) (uint8_t *)(SMBD_SMB2_OUT_BODY_IOV(req)->iov_base)
531 #define SMBD_SMB2_OUT_BODY_LEN(req) (SMBD_SMB2_OUT_BODY_IOV(req)->iov_len)
532 #define SMBD_SMB2_OUT_DYN_IOV(req) SMBD_SMB2_IDX_DYN_IOV(req,out,req->current_idx)
533 #define SMBD_SMB2_OUT_DYN_PTR(req) (uint8_t *)(SMBD_SMB2_OUT_DYN_IOV(req)->iov_base)
534 #define SMBD_SMB2_OUT_DYN_LEN(req) (SMBD_SMB2_OUT_DYN_IOV(req)->iov_len)
538 * vector[0] TRANSPORT HEADER (empty)
540 * vector[1] SMB2_TRANSFORM (optional)
542 * vector[3] fixed body
543 * vector[4] dynamic body
547 * vector[5] SMB2_TRANSFORM (optional)
549 * vector[7] fixed body
550 * vector[8] dynamic body
555 struct iovec *vector;
559 /* the NBT header is not allocated */
562 * vector[0] TRANSPORT HEADER
564 * vector[1] SMB2_TRANSFORM (optional)
566 * vector[3] fixed body
567 * vector[4] dynamic body
571 * vector[5] SMB2_TRANSFORM (empty)
573 * vector[7] fixed body
574 * vector[8] dynamic body
579 struct iovec *vector;
584 struct smbd_server_connection;
587 struct pending_message_list;
588 struct pending_auth_data;
591 struct user_struct *next, *prev;
592 uint64_t vuid; /* Tag for this entry. */
594 char *session_keystr; /* used by utmp and pam session code.
598 struct auth_session_info *session_info;
600 struct smbXsrv_session *session;
603 struct smbd_server_connection {
605 const struct tsocket_address *local_address;
606 const struct tsocket_address *remote_address;
607 const char *remote_hostname;
608 struct tevent_context *ev_ctx;
609 struct messaging_context *msg_ctx;
610 struct sys_notify_context *sys_notify_ctx;
611 struct notify_context *notify_ctx;
619 struct user_struct *users;
621 size_t num_connections;
622 struct connection_struct *connections;
625 struct files_struct *files;
627 int real_max_open_files;
628 struct fsp_singleton_cache fsp_fi_cache;
630 struct pending_message_list *deferred_open_queue;
633 /* open directory handles. */
635 struct bitmap *dptr_bmap;
636 struct dptr_struct *dirptrs;
640 uint64_t num_requests;
642 /* Current number of oplocks we have outstanding. */
644 int32_t exclusive_open;
645 int32_t level_II_open;
646 struct kernel_oplocks *kernel_ops;
650 struct fd_event *fde;
654 * fd for the fcntl lock mutexing access to our sock
659 * fd for the trusted pipe from
665 * fde for the trusted_fd
667 struct fd_event *trusted_fde;
670 * Reference count for the fcntl lock to
671 * allow recursive locks.
677 bool encrypted_passwords;
679 struct auth4_context *auth_context;
682 * Size of the data we can receive. Set by us.
683 * Can be modified by the max xmit parameter.
689 uint16_t client_major;
690 uint16_t client_minor;
691 uint32_t client_cap_low;
692 uint32_t client_cap_high;
698 * Size of data we can send to client. Set
699 * by the client for all protocols above CORE.
700 * Set by us for CORE protocol.
703 uint64_t last_session_tag;
705 struct smb_signing_state *signing_state;
707 struct notify_mid_map *notify_mid_maps;
710 /* dlink list we store pending lock records on. */
711 struct blocking_lock_record *blocking_lock_queue;
712 /* dlink list we move cancelled lock records onto. */
713 struct blocking_lock_record *blocking_lock_cancelled_queue;
715 /* The event that makes us process our blocking lock queue */
716 struct timed_event *brl_timeout;
718 bool blocking_lock_unlock_state;
719 bool blocking_lock_cancel_state;
723 struct tevent_queue *recv_queue;
724 struct tevent_queue *send_queue;
725 struct tstream_context *stream;
728 /* The event that makes us process our blocking lock queue */
729 struct timed_event *brl_timeout;
730 bool blocking_lock_unlock_state;
732 struct smbd_smb2_request *requests;
734 * seqnum_low is the lowest sequence number
739 * seqnum_range is the range of credits we have
740 * granted from the sequence windows starting
743 * This gets incremented when new credits are
744 * granted and gets decremented when the
745 * lowest sequence number is consumed
746 * (when seqnum_low gets incremented).
748 uint16_t seqnum_range;
750 * credits_grantedThe number of credits we have currently granted
753 * This gets incremented when new credits are
754 * granted and gets decremented when any credit
757 * Note: the decrementing is different compared
760 uint16_t credits_granted;
762 * The maximum number of credits we will ever
763 * grant to the client.
765 * Typically we will only grant 1/16th of
768 * This is the "server max credits" parameter.
770 uint16_t max_credits;
772 * a bitmap of size max_credits
774 struct bitmap *credits_bitmap;
775 bool supports_multicredit;
779 bool compound_related_in_progress;
782 struct smbXsrv_connection *conn;
785 extern struct smbXsrv_connection *global_smbXsrv_connection;
787 void smbd_init_globals(void);