source: trunk/server/source3/smbd/globals.h@ 854

Last change on this file since 854 was 751, checked in by Silvan Scherrer, 13 years ago

Samba Server: updated trunk to 3.6.9
File size: 19.1 KB
Line 
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)
24struct aio_extra;
25extern struct aio_extra *aio_list_head;
26extern struct tevent_signal *aio_signal_event;
27extern int aio_pending_size;
28extern int outstanding_aio_calls;
29#endif
30
31#ifdef USE_DMAPI
32struct smbd_dmapi_context;
33extern struct smbd_dmapi_context *dmapi_ctx;
34#endif
35
36extern bool dfree_broken;
37
38/* how many write cache buffers have been allocated */
39extern unsigned int allocated_write_caches;
40
41/* A singleton cache to speed up searching by dev/inode. */
42struct fsp_singleton_cache {
43 files_struct *fsp;
44 struct file_id id;
45};
46
47extern const struct mangle_fns *mangle_fns;
48
49extern unsigned char *chartest;
50struct tdb_context;
51extern 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*/
58extern unsigned mangle_prefix;
59
60struct msg_state;
61extern struct msg_state *smbd_msg_state;
62
63extern bool logged_ioctl_message;
64
65extern int trans_num;
66
67extern time_t last_smb_conf_reload_time;
68extern time_t last_printer_reload_time;
69/****************************************************************************
70 structure to hold a linked list of queued messages.
71 for processing.
72****************************************************************************/
73struct pending_message_list;
74extern struct pending_message_list *deferred_open_queue;
75extern uint32_t common_flags2;
76
77struct smb_srv_trans_enc_ctx;
78extern struct smb_srv_trans_enc_ctx *partial_srv_trans_enc_ctx;
79extern struct smb_srv_trans_enc_ctx *srv_trans_enc_ctx;
80
81struct 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. */
87extern struct sec_ctx sec_ctx_stack[MAX_SEC_CTX_DEPTH + 1];
88extern int sec_ctx_stack_ndx;
89extern bool become_uid_done;
90extern bool become_gid_done;
91
92extern connection_struct *last_conn;
93extern uint16_t last_flags;
94
95extern uint32_t global_client_caps;
96
97extern uint16_t fnf_handle;
98
99struct conn_ctx {
100 connection_struct *conn;
101 uint16 vuid;
102};
103/* A stack of current_user connection contexts. */
104extern struct conn_ctx conn_ctx_stack[MAX_SEC_CTX_DEPTH];
105extern int conn_ctx_stack_ndx;
106
107struct vfs_init_function_entry;
108extern struct vfs_init_function_entry *backends;
109extern char *sparse_buf;
110extern char *LastDir;
111
112/* Current number of oplocks we have outstanding. */
113extern int32_t exclusive_oplocks_open;
114extern int32_t level_II_oplocks_open;
115extern struct kernel_oplocks *koplocks;
116
117extern int am_parent;
118extern struct event_context *smbd_event_ctx;
119extern struct messaging_context *smbd_msg_ctx;
120extern struct memcache *smbd_memcache_ctx;
121extern bool exit_firsttime;
122struct child_pid;
123extern struct child_pid *children;
124extern int num_children;
125
126struct tstream_context;
127struct smbd_smb2_request;
128struct smbd_smb2_session;
129struct smbd_smb2_tcon;
130
131DATA_BLOB negprot_spnego(TALLOC_CTX *ctx, struct smbd_server_connection *sconn);
132
133void smbd_lock_socket(struct smbd_server_connection *sconn);
134void smbd_unlock_socket(struct smbd_server_connection *sconn);
135
136NTSTATUS smb2_signing_sign_pdu(DATA_BLOB session_key,
137 struct iovec *vector,
138 int count);
139NTSTATUS smb2_signing_check_pdu(DATA_BLOB session_key,
140 const struct iovec *vector,
141 int count);
142
143NTSTATUS 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
153NTSTATUS 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 char **ppdata,
166 unsigned int *pdata_size);
167
168NTSTATUS smbd_do_setfilepathinfo(connection_struct *conn,
169 struct smb_request *req,
170 TALLOC_CTX *mem_ctx,
171 uint16_t info_level,
172 files_struct *fsp,
173 struct smb_filename *smb_fname,
174 char **ppdata, int total_data,
175 int *ret_data_size);
176
177NTSTATUS smbd_do_qfsinfo(connection_struct *conn,
178 TALLOC_CTX *mem_ctx,
179 uint16_t info_level,
180 uint16_t flags2,
181 unsigned int max_data_bytes,
182 char **ppdata,
183 int *ret_data_len);
184
185bool smbd_dirptr_get_entry(TALLOC_CTX *ctx,
186 struct dptr_struct *dirptr,
187 const char *mask,
188 uint32_t dirtype,
189 bool dont_descend,
190 bool ask_sharemode,
191 bool (*match_fn)(TALLOC_CTX *ctx,
192 void *private_data,
193 const char *dname,
194 const char *mask,
195 char **_fname),
196 bool (*mode_fn)(TALLOC_CTX *ctx,
197 void *private_data,
198 struct smb_filename *smb_fname,
199 uint32_t *_mode),
200 void *private_data,
201 char **_fname,
202 struct smb_filename **_smb_fname,
203 uint32_t *_mode,
204 long *_prev_offset);
205
206bool smbd_dirptr_lanman2_entry(TALLOC_CTX *ctx,
207 connection_struct *conn,
208 struct dptr_struct *dirptr,
209 uint16 flags2,
210 const char *path_mask,
211 uint32 dirtype,
212 int info_level,
213 int requires_resume_key,
214 bool dont_descend,
215 bool ask_sharemode,
216 uint8_t align,
217 bool do_pad,
218 char **ppdata,
219 char *base_data,
220 char *end_data,
221 int space_remaining,
222 bool *out_of_space,
223 bool *got_exact_match,
224 int *_last_entry_off,
225 struct ea_list *name_list);
226
227NTSTATUS smbd_calculate_access_mask(connection_struct *conn,
228 const struct smb_filename *smb_fname,
229 bool file_existed,
230 uint32_t access_mask,
231 uint32_t *access_mask_out);
232NTSTATUS smbd_check_open_rights(struct connection_struct *conn,
233 const struct smb_filename *smb_fname,
234 uint32_t access_mask,
235 uint32_t *access_granted);
236
237void smbd_notify_cancel_by_smbreq(const struct smb_request *smbreq);
238
239void smbd_server_connection_terminate_ex(struct smbd_server_connection *sconn,
240 const char *reason,
241 const char *location);
242#define smbd_server_connection_terminate(sconn, reason) \
243 smbd_server_connection_terminate_ex(sconn, reason, __location__)
244
245struct server_id sconn_server_id(const struct smbd_server_connection *sconn);
246
247const char *smb2_opcode_name(uint16_t opcode);
248bool smbd_is_smb2_header(const uint8_t *inbuf, size_t size);
249
250void reply_smb2002(struct smb_request *req, uint16_t choice);
251void smbd_smb2_first_negprot(struct smbd_server_connection *sconn,
252 const uint8_t *inbuf, size_t size);
253
254NTSTATUS smbd_smb2_request_error_ex(struct smbd_smb2_request *req,
255 NTSTATUS status,
256 DATA_BLOB *info,
257 const char *location);
258#define smbd_smb2_request_error(req, status) \
259 smbd_smb2_request_error_ex(req, status, NULL, __location__)
260NTSTATUS smbd_smb2_request_done_ex(struct smbd_smb2_request *req,
261 NTSTATUS status,
262 DATA_BLOB body, DATA_BLOB *dyn,
263 const char *location);
264#define smbd_smb2_request_done(req, body, dyn) \
265 smbd_smb2_request_done_ex(req, NT_STATUS_OK, body, dyn, __location__)
266
267NTSTATUS smbd_smb2_send_oplock_break(struct smbd_server_connection *sconn,
268 uint64_t file_id_persistent,
269 uint64_t file_id_volatile,
270 uint8_t oplock_level);
271
272NTSTATUS smbd_smb2_request_pending_queue(struct smbd_smb2_request *req,
273 struct tevent_req *subreq);
274
275NTSTATUS smbd_smb2_request_check_session(struct smbd_smb2_request *req);
276NTSTATUS smbd_smb2_request_check_tcon(struct smbd_smb2_request *req);
277
278struct smb_request *smbd_smb2_fake_smb_request(struct smbd_smb2_request *req);
279void remove_smb2_chained_fsp(files_struct *fsp);
280
281NTSTATUS smbd_smb2_request_verify_sizes(struct smbd_smb2_request *req,
282 size_t expected_body_size);
283
284NTSTATUS smbd_smb2_request_process_negprot(struct smbd_smb2_request *req);
285NTSTATUS smbd_smb2_request_process_sesssetup(struct smbd_smb2_request *req);
286NTSTATUS smbd_smb2_request_process_logoff(struct smbd_smb2_request *req);
287NTSTATUS smbd_smb2_request_process_tcon(struct smbd_smb2_request *req);
288NTSTATUS smbd_smb2_request_process_tdis(struct smbd_smb2_request *req);
289NTSTATUS smbd_smb2_request_process_create(struct smbd_smb2_request *req);
290NTSTATUS smbd_smb2_request_process_close(struct smbd_smb2_request *req);
291NTSTATUS smbd_smb2_request_process_flush(struct smbd_smb2_request *req);
292NTSTATUS smbd_smb2_request_process_read(struct smbd_smb2_request *req);
293NTSTATUS smb2_read_complete(struct tevent_req *req, ssize_t nread, int err);
294NTSTATUS smbd_smb2_request_process_write(struct smbd_smb2_request *req);
295NTSTATUS smb2_write_complete(struct tevent_req *req, ssize_t nwritten, int err);
296NTSTATUS smbd_smb2_request_process_lock(struct smbd_smb2_request *req);
297NTSTATUS smbd_smb2_request_process_ioctl(struct smbd_smb2_request *req);
298NTSTATUS smbd_smb2_request_process_keepalive(struct smbd_smb2_request *req);
299NTSTATUS smbd_smb2_request_process_find(struct smbd_smb2_request *req);
300NTSTATUS smbd_smb2_request_process_notify(struct smbd_smb2_request *req);
301NTSTATUS smbd_smb2_request_process_getinfo(struct smbd_smb2_request *req);
302NTSTATUS smbd_smb2_request_process_setinfo(struct smbd_smb2_request *req);
303NTSTATUS smbd_smb2_request_process_break(struct smbd_smb2_request *req);
304NTSTATUS smbd_smb2_request_dispatch(struct smbd_smb2_request *req);
305void smbd_smb2_request_dispatch_immediate(struct tevent_context *ctx,
306 struct tevent_immediate *im,
307 void *private_data);
308
309/* SMB1 -> SMB2 glue. */
310void send_break_message_smb2(files_struct *fsp, int level);
311struct blocking_lock_record *get_pending_smb2req_blr(struct smbd_smb2_request *smb2req);
312bool push_blocking_lock_request_smb2( struct byte_range_lock *br_lck,
313 struct smb_request *req,
314 files_struct *fsp,
315 int lock_timeout,
316 int lock_num,
317 uint64_t smblctx,
318 enum brl_type lock_type,
319 enum brl_flavour lock_flav,
320 uint64_t offset,
321 uint64_t count,
322 uint64_t blocking_smblctx);
323void process_blocking_lock_queue_smb2(
324 struct smbd_server_connection *sconn, struct timeval tv_curr);
325void cancel_pending_lock_requests_by_fid_smb2(files_struct *fsp,
326 struct byte_range_lock *br_lck,
327 enum file_close_type close_type);
328/* From smbd/smb2_create.c */
329int map_smb2_oplock_levels_to_samba(uint8_t in_oplock_level);
330bool get_deferred_open_message_state_smb2(struct smbd_smb2_request *smb2req,
331 struct timeval *p_request_time,
332 void **pp_state);
333bool open_was_deferred_smb2(struct smbd_server_connection *sconn,
334 uint64_t mid);
335void remove_deferred_open_message_smb2(
336 struct smbd_server_connection *sconn, uint64_t mid);
337void schedule_deferred_open_message_smb2(
338 struct smbd_server_connection *sconn, uint64_t mid);
339bool push_deferred_open_message_smb2(struct smbd_smb2_request *smb2req,
340 struct timeval request_time,
341 struct timeval timeout,
342 struct file_id id,
343 char *private_data,
344 size_t priv_len);
345
346struct smbd_smb2_request {
347 struct smbd_smb2_request *prev, *next;
348
349 TALLOC_CTX *mem_pool;
350 struct smbd_smb2_request **parent;
351
352 struct smbd_server_connection *sconn;
353
354 /* the session the request operates on, maybe NULL */
355 struct smbd_smb2_session *session;
356 uint64_t last_session_id;
357
358 /* the tcon the request operates on, maybe NULL */
359 struct smbd_smb2_tcon *tcon;
360 uint32_t last_tid;
361
362 int current_idx;
363 bool do_signing;
364 bool async;
365 bool cancelled;
366 bool compound_related;
367
368 /* fake smb1 request. */
369 struct smb_request *smb1req;
370 struct files_struct *compat_chain_fsp;
371
372 /*
373 * The sub request for async backend calls.
374 * This is used for SMB2 Cancel.
375 */
376 struct tevent_req *subreq;
377
378 struct {
379 /* the NBT header is not allocated */
380 uint8_t nbt_hdr[4];
381 /*
382 * vector[0] NBT
383 * .
384 * vector[1] SMB2
385 * vector[2] fixed body
386 * vector[3] dynamic body
387 * .
388 * .
389 * .
390 * vector[4] SMB2
391 * vector[5] fixed body
392 * vector[6] dynamic body
393 * .
394 * .
395 * .
396 */
397 struct iovec *vector;
398 int vector_count;
399 } in;
400 struct {
401 /* the NBT header is not allocated */
402 uint8_t nbt_hdr[4];
403 /*
404 * vector[0] NBT
405 * .
406 * vector[1] SMB2
407 * vector[2] fixed body
408 * vector[3] dynamic body
409 * .
410 * .
411 * .
412 * vector[4] SMB2
413 * vector[5] fixed body
414 * vector[6] dynamic body
415 * .
416 * .
417 * .
418 */
419 struct iovec *vector;
420 int vector_count;
421 } out;
422};
423
424struct smbd_server_connection;
425
426struct smbd_smb2_session {
427 struct smbd_smb2_session *prev, *next;
428 struct smbd_server_connection *sconn;
429 NTSTATUS status;
430 uint64_t vuid;
431 struct auth_ntlmssp_state *auth_ntlmssp_state;
432 struct auth_serversupplied_info *session_info;
433 DATA_BLOB session_key;
434 bool do_signing;
435
436 user_struct *compat_vuser;
437
438 struct {
439 /* an id tree used to allocate tids */
440 struct idr_context *idtree;
441
442 /* this is the limit of tid values for this connection */
443 uint32_t limit;
444
445 struct smbd_smb2_tcon *list;
446 } tcons;
447};
448
449struct smbd_smb2_tcon {
450 struct smbd_smb2_tcon *prev, *next;
451 struct smbd_smb2_session *session;
452 uint32_t tid;
453 int snum;
454 connection_struct *compat_conn;
455};
456
457struct pending_auth_data;
458
459struct smbd_server_connection {
460 int sock;
461 struct client_address client_id;
462 const struct tsocket_address *local_address;
463 const struct tsocket_address *remote_address;
464 struct messaging_context *msg_ctx;
465 struct {
466 bool got_session;
467 } nbt;
468 bool using_smb2;
469 int trans_num;
470
471 /*
472 * Cache for calling poll(2) to avoid allocations in our
473 * central event loop
474 */
475 struct pollfd *pfds;
476
477 struct files_struct *files;
478 struct bitmap *file_bmap;
479 int real_max_open_files;
480 int files_used;
481 struct fsp_singleton_cache fsp_fi_cache;
482 unsigned long file_gen_counter;
483 int first_file;
484
485 /* number of open connections (tcons) */
486 int num_tcons_open;
487
488 /* open directory handles. */
489 struct {
490 struct bitmap *dptr_bmap;
491 struct dptr_struct *dirptrs;
492 int dirhandles_open;
493 } searches;
494
495 uint64_t num_requests;
496
497 struct {
498 struct fd_event *fde;
499
500 struct {
501 /*
502 * fd for the fcntl lock mutexing access to our sock
503 */
504 int socket_lock_fd;
505
506 /*
507 * fd for the trusted pipe from
508 * echo handler child
509 */
510 int trusted_fd;
511
512 /*
513 * fde for the trusted_fd
514 */
515 struct fd_event *trusted_fde;
516
517 /*
518 * Reference count for the fcntl lock to
519 * allow recursive locks.
520 */
521 int ref_count;
522 } echo_handler;
523
524 struct {
525 bool encrypted_passwords;
526 bool spnego;
527 struct auth_context *auth_context;
528 bool done;
529 /*
530 * Size of the data we can receive. Set by us.
531 * Can be modified by the max xmit parameter.
532 */
533 int max_recv;
534 } negprot;
535
536 struct {
537 bool done_sesssetup;
538 /*
539 * Size of data we can send to client. Set
540 * by the client for all protocols above CORE.
541 * Set by us for CORE protocol.
542 */
543 int max_send;
544 uint16_t last_session_tag;
545
546 /* users from session setup */
547 char *session_userlist;
548 /* workgroup from session setup. */
549 char *session_workgroup;
550 /*
551 * this holds info on user ids that are already
552 * validated for this VC
553 */
554 user_struct *validated_users;
555 uint16_t next_vuid;
556 int num_validated_vuids;
557 } sessions;
558 struct {
559 connection_struct *Connections;
560 /* number of open connections */
561 struct bitmap *bmap;
562 } tcons;
563 struct smb_signing_state *signing_state;
564 /* List to store partial SPNEGO auth fragments. */
565 struct pending_auth_data *pd_list;
566
567 struct notify_mid_map *notify_mid_maps;
568
569 struct {
570 /* dlink list we store pending lock records on. */
571 struct blocking_lock_record *blocking_lock_queue;
572 /* dlink list we move cancelled lock records onto. */
573 struct blocking_lock_record *blocking_lock_cancelled_queue;
574
575 /* The event that makes us process our blocking lock queue */
576 struct timed_event *brl_timeout;
577
578 bool blocking_lock_unlock_state;
579 bool blocking_lock_cancel_state;
580 } locks;
581 } smb1;
582 struct {
583 struct tevent_context *event_ctx;
584 struct tevent_queue *recv_queue;
585 struct tevent_queue *send_queue;
586 struct tstream_context *stream;
587 struct {
588 /* an id tree used to allocate vuids */
589 /* this holds info on session vuids that are already
590 * validated for this VC */
591 struct idr_context *idtree;
592
593 /* this is the limit of vuid values for this connection */
594 uint64_t limit;
595
596 struct smbd_smb2_session *list;
597 } sessions;
598 struct {
599 /* The event that makes us process our blocking lock queue */
600 struct timed_event *brl_timeout;
601 bool blocking_lock_unlock_state;
602 } locks;
603 struct smbd_smb2_request *requests;
604 /*
605 * seqnum_low is the lowest sequence number
606 * we will accept.
607 */
608 uint64_t seqnum_low;
609 /*
610 * seqnum_range is the range of credits we have
611 * granted from the sequence windows starting
612 * at seqnum_low.
613 *
614 * This gets incremented when new credits are
615 * granted and gets decremented when the
616 * lowest sequence number is consumed
617 * (when seqnum_low gets incremented).
618 */
619 uint16_t seqnum_range;
620 /*
621 * credits_grantedThe number of credits we have currently granted
622 * to the client.
623 *
624 * This gets incremented when new credits are
625 * granted and gets decremented when any credit
626 * is comsumed.
627 *
628 * Note: the decrementing is different compared
629 * to seqnum_range.
630 */
631 uint16_t credits_granted;
632 /*
633 * The maximum number of credits we will ever
634 * grant to the client.
635 *
636 * Typically we will only grant 1/16th of
637 * max_credits.
638 *
639 * This is the "server max credits" parameter.
640 */
641 uint16_t max_credits;
642 /*
643 * a bitmap of size max_credits
644 */
645 struct bitmap *credits_bitmap;
646 uint32_t max_trans;
647 uint32_t max_read;
648 uint32_t max_write;
649 bool compound_related_in_progress;
650 } smb2;
651};
652
653extern struct smbd_server_connection *smbd_server_conn;
654
655struct smbd_server_connection *msg_ctx_to_sconn(struct messaging_context *msg_ctx);
656
657void smbd_init_globals(void);
Note: See TracBrowser for help on using the repository browser.