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"
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
;
32 struct smbd_dmapi_context
;
33 extern struct smbd_dmapi_context
*dmapi_ctx
;
36 extern bool dfree_broken
;
38 /* how many write cache buffers have been allocated */
39 extern unsigned int allocated_write_caches
;
41 /* A singleton cache to speed up searching by dev/inode. */
42 struct fsp_singleton_cache
{
47 extern const struct mangle_fns
*mangle_fns
;
49 extern unsigned char *chartest
;
51 extern struct tdb_context
*tdb_mangled_cache
;
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.
58 extern unsigned mangle_prefix
;
61 extern struct msg_state
*smbd_msg_state
;
63 extern bool logged_ioctl_message
;
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.
72 ****************************************************************************/
73 struct pending_message_list
;
74 extern struct pending_message_list
*deferred_open_queue
;
75 extern uint32_t common_flags2
;
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
;
82 struct security_unix_token ut
;
83 struct security_token
*token
;
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
;
92 extern connection_struct
*last_conn
;
93 extern uint16_t last_flags
;
95 extern uint32_t global_client_caps
;
97 extern uint16_t fnf_handle
;
100 connection_struct
*conn
;
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
;
107 struct vfs_init_function_entry
;
108 extern struct vfs_init_function_entry
*backends
;
109 extern char *sparse_buf
;
110 extern char *LastDir
;
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
;
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
;
123 extern struct child_pid
*children
;
124 extern int num_children
;
126 struct tstream_context
;
127 struct smbd_smb2_request
;
128 struct smbd_smb2_session
;
129 struct smbd_smb2_tcon
;
131 DATA_BLOB
negprot_spnego(TALLOC_CTX
*ctx
, struct smbd_server_connection
*sconn
);
133 void smbd_lock_socket(struct smbd_server_connection
*sconn
);
134 void smbd_unlock_socket(struct smbd_server_connection
*sconn
);
136 NTSTATUS
smb2_signing_sign_pdu(DATA_BLOB session_key
,
137 struct iovec
*vector
,
139 NTSTATUS
smb2_signing_check_pdu(DATA_BLOB session_key
,
140 const struct iovec
*vector
,
143 NTSTATUS
smbd_do_locking(struct smb_request
*req
,
148 struct smbd_lock_element
*ulocks
,
150 struct smbd_lock_element
*locks
,
153 NTSTATUS
smbd_do_qfilepathinfo(connection_struct
*conn
,
157 struct smb_filename
*smb_fname
,
159 struct timespec write_time_ts
,
160 struct ea_list
*ea_list
,
164 unsigned int max_data_bytes
,
166 unsigned int *pdata_size
);
168 NTSTATUS
smbd_do_setfilepathinfo(connection_struct
*conn
,
169 struct smb_request
*req
,
173 struct smb_filename
*smb_fname
,
174 char **ppdata
, int total_data
,
177 NTSTATUS
smbd_do_qfsinfo(connection_struct
*conn
,
181 unsigned int max_data_bytes
,
182 struct smb_filename
*smb_fname
,
186 bool smbd_dirptr_get_entry(TALLOC_CTX
*ctx
,
187 struct dptr_struct
*dirptr
,
192 bool (*match_fn
)(TALLOC_CTX
*ctx
,
197 bool (*mode_fn
)(TALLOC_CTX
*ctx
,
199 struct smb_filename
*smb_fname
,
203 struct smb_filename
**_smb_fname
,
207 bool smbd_dirptr_lanman2_entry(TALLOC_CTX
*ctx
,
208 connection_struct
*conn
,
209 struct dptr_struct
*dirptr
,
211 const char *path_mask
,
214 int requires_resume_key
,
224 bool *got_exact_match
,
225 int *_last_entry_off
,
226 struct ea_list
*name_list
);
228 NTSTATUS
smbd_calculate_access_mask(connection_struct
*conn
,
229 const struct smb_filename
*smb_fname
,
231 uint32_t access_mask
,
232 uint32_t *access_mask_out
);
233 NTSTATUS
smbd_check_open_rights(struct connection_struct
*conn
,
234 const struct smb_filename
*smb_fname
,
235 uint32_t access_mask
,
236 uint32_t *access_granted
);
238 void smbd_notify_cancel_by_smbreq(const struct smb_request
*smbreq
);
240 void smbd_server_connection_terminate_ex(struct smbd_server_connection
*sconn
,
242 const char *location
);
243 #define smbd_server_connection_terminate(sconn, reason) \
244 smbd_server_connection_terminate_ex(sconn, reason, __location__)
246 struct server_id
sconn_server_id(const struct smbd_server_connection
*sconn
);
248 const char *smb2_opcode_name(uint16_t opcode
);
249 bool smbd_is_smb2_header(const uint8_t *inbuf
, size_t size
);
251 void reply_smb2002(struct smb_request
*req
, uint16_t choice
);
252 void smbd_smb2_first_negprot(struct smbd_server_connection
*sconn
,
253 const uint8_t *inbuf
, size_t size
);
255 NTSTATUS
smbd_smb2_request_error_ex(struct smbd_smb2_request
*req
,
258 const char *location
);
259 #define smbd_smb2_request_error(req, status) \
260 smbd_smb2_request_error_ex(req, status, NULL, __location__)
261 NTSTATUS
smbd_smb2_request_done_ex(struct smbd_smb2_request
*req
,
263 DATA_BLOB body
, DATA_BLOB
*dyn
,
264 const char *location
);
265 #define smbd_smb2_request_done(req, body, dyn) \
266 smbd_smb2_request_done_ex(req, NT_STATUS_OK, body, dyn, __location__)
268 NTSTATUS
smbd_smb2_send_oplock_break(struct smbd_server_connection
*sconn
,
269 uint64_t file_id_persistent
,
270 uint64_t file_id_volatile
,
271 uint8_t oplock_level
);
273 NTSTATUS
smbd_smb2_request_pending_queue(struct smbd_smb2_request
*req
,
274 struct tevent_req
*subreq
);
276 NTSTATUS
smbd_smb2_request_check_session(struct smbd_smb2_request
*req
);
277 NTSTATUS
smbd_smb2_request_check_tcon(struct smbd_smb2_request
*req
);
279 struct smb_request
*smbd_smb2_fake_smb_request(struct smbd_smb2_request
*req
);
280 void remove_smb2_chained_fsp(files_struct
*fsp
);
282 NTSTATUS
smbd_smb2_request_verify_sizes(struct smbd_smb2_request
*req
,
283 size_t expected_body_size
);
285 NTSTATUS
smbd_smb2_request_process_negprot(struct smbd_smb2_request
*req
);
286 NTSTATUS
smbd_smb2_request_process_sesssetup(struct smbd_smb2_request
*req
);
287 NTSTATUS
smbd_smb2_request_process_logoff(struct smbd_smb2_request
*req
);
288 NTSTATUS
smbd_smb2_request_process_tcon(struct smbd_smb2_request
*req
);
289 NTSTATUS
smbd_smb2_request_process_tdis(struct smbd_smb2_request
*req
);
290 NTSTATUS
smbd_smb2_request_process_create(struct smbd_smb2_request
*req
);
291 NTSTATUS
smbd_smb2_request_process_close(struct smbd_smb2_request
*req
);
292 NTSTATUS
smbd_smb2_request_process_flush(struct smbd_smb2_request
*req
);
293 NTSTATUS
smbd_smb2_request_process_read(struct smbd_smb2_request
*req
);
294 NTSTATUS
smb2_read_complete(struct tevent_req
*req
, ssize_t nread
, int err
);
295 NTSTATUS
smbd_smb2_request_process_write(struct smbd_smb2_request
*req
);
296 NTSTATUS
smb2_write_complete(struct tevent_req
*req
, ssize_t nwritten
, int err
);
297 NTSTATUS
smbd_smb2_request_process_lock(struct smbd_smb2_request
*req
);
298 NTSTATUS
smbd_smb2_request_process_ioctl(struct smbd_smb2_request
*req
);
299 NTSTATUS
smbd_smb2_request_process_keepalive(struct smbd_smb2_request
*req
);
300 NTSTATUS
smbd_smb2_request_process_find(struct smbd_smb2_request
*req
);
301 NTSTATUS
smbd_smb2_request_process_notify(struct smbd_smb2_request
*req
);
302 NTSTATUS
smbd_smb2_request_process_getinfo(struct smbd_smb2_request
*req
);
303 NTSTATUS
smbd_smb2_request_process_setinfo(struct smbd_smb2_request
*req
);
304 NTSTATUS
smbd_smb2_request_process_break(struct smbd_smb2_request
*req
);
305 NTSTATUS
smbd_smb2_request_dispatch(struct smbd_smb2_request
*req
);
306 void smbd_smb2_request_dispatch_immediate(struct tevent_context
*ctx
,
307 struct tevent_immediate
*im
,
310 /* SMB1 -> SMB2 glue. */
311 void send_break_message_smb2(files_struct
*fsp
, int level
);
312 struct blocking_lock_record
*get_pending_smb2req_blr(struct smbd_smb2_request
*smb2req
);
313 bool push_blocking_lock_request_smb2( struct byte_range_lock
*br_lck
,
314 struct smb_request
*req
,
319 enum brl_type lock_type
,
320 enum brl_flavour lock_flav
,
323 uint64_t blocking_smblctx
);
324 void process_blocking_lock_queue_smb2(
325 struct smbd_server_connection
*sconn
, struct timeval tv_curr
);
326 void cancel_pending_lock_requests_by_fid_smb2(files_struct
*fsp
,
327 struct byte_range_lock
*br_lck
,
328 enum file_close_type close_type
);
329 /* From smbd/smb2_create.c */
330 int map_smb2_oplock_levels_to_samba(uint8_t in_oplock_level
);
331 bool get_deferred_open_message_state_smb2(struct smbd_smb2_request
*smb2req
,
332 struct timeval
*p_request_time
,
334 bool open_was_deferred_smb2(struct smbd_server_connection
*sconn
,
336 void remove_deferred_open_message_smb2(
337 struct smbd_server_connection
*sconn
, uint64_t mid
);
338 void schedule_deferred_open_message_smb2(
339 struct smbd_server_connection
*sconn
, uint64_t mid
);
340 bool push_deferred_open_message_smb2(struct smbd_smb2_request
*smb2req
,
341 struct timeval request_time
,
342 struct timeval timeout
,
347 struct smbd_smb2_request
{
348 struct smbd_smb2_request
*prev
, *next
;
350 TALLOC_CTX
*mem_pool
;
351 struct smbd_smb2_request
**parent
;
353 struct smbd_server_connection
*sconn
;
355 /* the session the request operates on, maybe NULL */
356 struct smbd_smb2_session
*session
;
357 uint64_t last_session_id
;
359 /* the tcon the request operates on, maybe NULL */
360 struct smbd_smb2_tcon
*tcon
;
367 bool compound_related
;
369 /* fake smb1 request. */
370 struct smb_request
*smb1req
;
371 struct files_struct
*compat_chain_fsp
;
374 * The sub request for async backend calls.
375 * This is used for SMB2 Cancel.
377 struct tevent_req
*subreq
;
380 /* the NBT header is not allocated */
386 * vector[2] fixed body
387 * vector[3] dynamic body
392 * vector[5] fixed body
393 * vector[6] dynamic body
398 struct iovec
*vector
;
402 /* the NBT header is not allocated */
408 * vector[2] fixed body
409 * vector[3] dynamic body
414 * vector[5] fixed body
415 * vector[6] dynamic body
420 struct iovec
*vector
;
425 struct smbd_server_connection
;
427 struct smbd_smb2_session
{
428 struct smbd_smb2_session
*prev
, *next
;
429 struct smbd_server_connection
*sconn
;
432 struct auth_ntlmssp_state
*auth_ntlmssp_state
;
433 struct auth_serversupplied_info
*session_info
;
434 DATA_BLOB session_key
;
437 user_struct
*compat_vuser
;
440 /* an id tree used to allocate tids */
441 struct idr_context
*idtree
;
443 /* this is the limit of tid values for this connection */
446 struct smbd_smb2_tcon
*list
;
450 struct smbd_smb2_tcon
{
451 struct smbd_smb2_tcon
*prev
, *next
;
452 struct smbd_smb2_session
*session
;
455 connection_struct
*compat_conn
;
458 struct pending_auth_data
;
460 struct smbd_server_connection
{
462 struct client_address client_id
;
463 const struct tsocket_address
*local_address
;
464 const struct tsocket_address
*remote_address
;
465 struct messaging_context
*msg_ctx
;
473 * Cache for calling poll(2) to avoid allocations in our
478 struct files_struct
*files
;
479 struct bitmap
*file_bmap
;
480 int real_max_open_files
;
482 struct fsp_singleton_cache fsp_fi_cache
;
483 unsigned long file_gen_counter
;
486 /* number of open connections (tcons) */
489 /* open directory handles. */
491 struct bitmap
*dptr_bmap
;
492 struct dptr_struct
*dirptrs
;
496 uint64_t num_requests
;
499 struct fd_event
*fde
;
503 * fd for the fcntl lock mutexing access to our sock
508 * fd for the trusted pipe from
514 * fde for the trusted_fd
516 struct fd_event
*trusted_fde
;
519 * Reference count for the fcntl lock to
520 * allow recursive locks.
526 bool encrypted_passwords
;
528 struct auth_context
*auth_context
;
531 * Size of the data we can receive. Set by us.
532 * Can be modified by the max xmit parameter.
540 * Size of data we can send to client. Set
541 * by the client for all protocols above CORE.
542 * Set by us for CORE protocol.
545 uint16_t last_session_tag
;
547 /* users from session setup */
548 char *session_userlist
;
549 /* workgroup from session setup. */
550 char *session_workgroup
;
552 * this holds info on user ids that are already
553 * validated for this VC
555 user_struct
*validated_users
;
557 int num_validated_vuids
;
560 connection_struct
*Connections
;
561 /* number of open connections */
564 struct smb_signing_state
*signing_state
;
565 /* List to store partial SPNEGO auth fragments. */
566 struct pending_auth_data
*pd_list
;
568 struct notify_mid_map
*notify_mid_maps
;
571 /* dlink list we store pending lock records on. */
572 struct blocking_lock_record
*blocking_lock_queue
;
573 /* dlink list we move cancelled lock records onto. */
574 struct blocking_lock_record
*blocking_lock_cancelled_queue
;
576 /* The event that makes us process our blocking lock queue */
577 struct timed_event
*brl_timeout
;
579 bool blocking_lock_unlock_state
;
580 bool blocking_lock_cancel_state
;
584 struct tevent_context
*event_ctx
;
585 struct tevent_queue
*recv_queue
;
586 struct tevent_queue
*send_queue
;
587 struct tstream_context
*stream
;
589 /* an id tree used to allocate vuids */
590 /* this holds info on session vuids that are already
591 * validated for this VC */
592 struct idr_context
*idtree
;
594 /* this is the limit of vuid values for this connection */
597 struct smbd_smb2_session
*list
;
600 /* The event that makes us process our blocking lock queue */
601 struct timed_event
*brl_timeout
;
602 bool blocking_lock_unlock_state
;
604 struct smbd_smb2_request
*requests
;
606 * seqnum_low is the lowest sequence number
611 * seqnum_range is the range of credits we have
612 * granted from the sequence windows starting
615 * This gets incremented when new credits are
616 * granted and gets decremented when the
617 * lowest sequence number is consumed
618 * (when seqnum_low gets incremented).
620 uint16_t seqnum_range
;
622 * credits_grantedThe number of credits we have currently granted
625 * This gets incremented when new credits are
626 * granted and gets decremented when any credit
629 * Note: the decrementing is different compared
632 uint16_t credits_granted
;
634 * The maximum number of credits we will ever
635 * grant to the client.
637 * Typically we will only grant 1/16th of
640 * This is the "server max credits" parameter.
642 uint16_t max_credits
;
644 * a bitmap of size max_credits
646 struct bitmap
*credits_bitmap
;
650 bool compound_related_in_progress
;
654 extern struct smbd_server_connection
*smbd_server_conn
;
656 struct smbd_server_connection
*msg_ctx_to_sconn(struct messaging_context
*msg_ctx
);
658 void smbd_init_globals(void);