source: vendor/3.6.0/source3/smbd/globals.h

Last change on this file was 740, checked in by Silvan Scherrer, 13 years ago

Samba Server: update vendor to 3.6.0
File size: 17.9 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_process_negprot(struct smbd_smb2_request *req);
282NTSTATUS smbd_smb2_request_process_sesssetup(struct smbd_smb2_request *req);
283NTSTATUS smbd_smb2_request_process_logoff(struct smbd_smb2_request *req);
284NTSTATUS smbd_smb2_request_process_tcon(struct smbd_smb2_request *req);
285NTSTATUS smbd_smb2_request_process_tdis(struct smbd_smb2_request *req);
286NTSTATUS smbd_smb2_request_process_create(struct smbd_smb2_request *req);
287NTSTATUS smbd_smb2_request_process_close(struct smbd_smb2_request *req);
288NTSTATUS smbd_smb2_request_process_flush(struct smbd_smb2_request *req);
289NTSTATUS smbd_smb2_request_process_read(struct smbd_smb2_request *req);
290NTSTATUS smb2_read_complete(struct tevent_req *req, ssize_t nread, int err);
291NTSTATUS smbd_smb2_request_process_write(struct smbd_smb2_request *req);
292NTSTATUS smb2_write_complete(struct tevent_req *req, ssize_t nwritten, int err);
293NTSTATUS smbd_smb2_request_process_lock(struct smbd_smb2_request *req);
294NTSTATUS smbd_smb2_request_process_ioctl(struct smbd_smb2_request *req);
295NTSTATUS smbd_smb2_request_process_keepalive(struct smbd_smb2_request *req);
296NTSTATUS smbd_smb2_request_process_find(struct smbd_smb2_request *req);
297NTSTATUS smbd_smb2_request_process_notify(struct smbd_smb2_request *req);
298NTSTATUS smbd_smb2_request_process_getinfo(struct smbd_smb2_request *req);
299NTSTATUS smbd_smb2_request_process_setinfo(struct smbd_smb2_request *req);
300NTSTATUS smbd_smb2_request_process_break(struct smbd_smb2_request *req);
301NTSTATUS smbd_smb2_request_dispatch(struct smbd_smb2_request *req);
302void smbd_smb2_request_dispatch_immediate(struct tevent_context *ctx,
303 struct tevent_immediate *im,
304 void *private_data);
305
306/* SMB1 -> SMB2 glue. */
307void send_break_message_smb2(files_struct *fsp, int level);
308struct blocking_lock_record *get_pending_smb2req_blr(struct smbd_smb2_request *smb2req);
309bool push_blocking_lock_request_smb2( struct byte_range_lock *br_lck,
310 struct smb_request *req,
311 files_struct *fsp,
312 int lock_timeout,
313 int lock_num,
314 uint64_t smblctx,
315 enum brl_type lock_type,
316 enum brl_flavour lock_flav,
317 uint64_t offset,
318 uint64_t count,
319 uint64_t blocking_smblctx);
320void process_blocking_lock_queue_smb2(
321 struct smbd_server_connection *sconn, struct timeval tv_curr);
322void cancel_pending_lock_requests_by_fid_smb2(files_struct *fsp,
323 struct byte_range_lock *br_lck,
324 enum file_close_type close_type);
325/* From smbd/smb2_create.c */
326int map_smb2_oplock_levels_to_samba(uint8_t in_oplock_level);
327bool get_deferred_open_message_state_smb2(struct smbd_smb2_request *smb2req,
328 struct timeval *p_request_time,
329 void **pp_state);
330bool open_was_deferred_smb2(struct smbd_server_connection *sconn,
331 uint64_t mid);
332void remove_deferred_open_message_smb2(
333 struct smbd_server_connection *sconn, uint64_t mid);
334void schedule_deferred_open_message_smb2(
335 struct smbd_server_connection *sconn, uint64_t mid);
336bool push_deferred_open_message_smb2(struct smbd_smb2_request *smb2req,
337 struct timeval request_time,
338 struct timeval timeout,
339 struct file_id id,
340 char *private_data,
341 size_t priv_len);
342
343struct smbd_smb2_request {
344 struct smbd_smb2_request *prev, *next;
345
346 TALLOC_CTX *mem_pool;
347 struct smbd_smb2_request **parent;
348
349 struct smbd_server_connection *sconn;
350
351 /* the session the request operates on, maybe NULL */
352 struct smbd_smb2_session *session;
353
354 /* the tcon the request operates on, maybe NULL */
355 struct smbd_smb2_tcon *tcon;
356
357 int current_idx;
358 bool do_signing;
359 bool async;
360 bool cancelled;
361
362 /* fake smb1 request. */
363 struct smb_request *smb1req;
364 struct files_struct *compat_chain_fsp;
365
366 NTSTATUS next_status;
367
368 /*
369 * The sub request for async backend calls.
370 * This is used for SMB2 Cancel.
371 */
372 struct tevent_req *subreq;
373
374 struct {
375 /* the NBT header is not allocated */
376 uint8_t nbt_hdr[4];
377 /*
378 * vector[0] NBT
379 * .
380 * vector[1] SMB2
381 * vector[2] fixed body
382 * vector[3] dynamic body
383 * .
384 * .
385 * .
386 * vector[4] SMB2
387 * vector[5] fixed body
388 * vector[6] dynamic body
389 * .
390 * .
391 * .
392 */
393 struct iovec *vector;
394 int vector_count;
395 } in;
396 struct {
397 /* the NBT header is not allocated */
398 uint8_t nbt_hdr[4];
399 /*
400 * vector[0] NBT
401 * .
402 * vector[1] SMB2
403 * vector[2] fixed body
404 * vector[3] dynamic body
405 * .
406 * .
407 * .
408 * vector[4] SMB2
409 * vector[5] fixed body
410 * vector[6] dynamic body
411 * .
412 * .
413 * .
414 */
415 struct iovec *vector;
416 int vector_count;
417 } out;
418};
419
420struct smbd_server_connection;
421
422struct smbd_smb2_session {
423 struct smbd_smb2_session *prev, *next;
424 struct smbd_server_connection *sconn;
425 NTSTATUS status;
426 uint64_t vuid;
427 struct auth_ntlmssp_state *auth_ntlmssp_state;
428 struct auth_serversupplied_info *session_info;
429 DATA_BLOB session_key;
430 bool do_signing;
431
432 user_struct *compat_vuser;
433
434 struct {
435 /* an id tree used to allocate tids */
436 struct idr_context *idtree;
437
438 /* this is the limit of tid values for this connection */
439 uint32_t limit;
440
441 struct smbd_smb2_tcon *list;
442 } tcons;
443};
444
445struct smbd_smb2_tcon {
446 struct smbd_smb2_tcon *prev, *next;
447 struct smbd_smb2_session *session;
448 uint32_t tid;
449 int snum;
450 connection_struct *compat_conn;
451};
452
453struct pending_auth_data;
454
455struct smbd_server_connection {
456 int sock;
457 struct client_address client_id;
458 const struct tsocket_address *local_address;
459 const struct tsocket_address *remote_address;
460 struct messaging_context *msg_ctx;
461 struct {
462 bool got_session;
463 } nbt;
464 bool using_smb2;
465 int trans_num;
466
467 /*
468 * Cache for calling poll(2) to avoid allocations in our
469 * central event loop
470 */
471 struct pollfd *pfds;
472
473 struct files_struct *files;
474 struct bitmap *file_bmap;
475 int real_max_open_files;
476 int files_used;
477 struct fsp_singleton_cache fsp_fi_cache;
478 unsigned long file_gen_counter;
479 int first_file;
480
481 /* number of open connections (tcons) */
482 int num_tcons_open;
483
484 /* open directory handles. */
485 struct {
486 struct bitmap *dptr_bmap;
487 struct dptr_struct *dirptrs;
488 int dirhandles_open;
489 } searches;
490
491 uint64_t num_requests;
492
493 struct {
494 struct fd_event *fde;
495
496 struct {
497 /*
498 * fd for the fcntl lock mutexing access to our sock
499 */
500 int socket_lock_fd;
501
502 /*
503 * fd for the trusted pipe from
504 * echo handler child
505 */
506 int trusted_fd;
507
508 /*
509 * fde for the trusted_fd
510 */
511 struct fd_event *trusted_fde;
512
513 /*
514 * Reference count for the fcntl lock to
515 * allow recursive locks.
516 */
517 int ref_count;
518 } echo_handler;
519
520 struct {
521 bool encrypted_passwords;
522 bool spnego;
523 struct auth_context *auth_context;
524 bool done;
525 /*
526 * Size of the data we can receive. Set by us.
527 * Can be modified by the max xmit parameter.
528 */
529 int max_recv;
530 } negprot;
531
532 struct {
533 bool done_sesssetup;
534 /*
535 * Size of data we can send to client. Set
536 * by the client for all protocols above CORE.
537 * Set by us for CORE protocol.
538 */
539 int max_send;
540 uint16_t last_session_tag;
541
542 /* users from session setup */
543 char *session_userlist;
544 /* workgroup from session setup. */
545 char *session_workgroup;
546 /*
547 * this holds info on user ids that are already
548 * validated for this VC
549 */
550 user_struct *validated_users;
551 uint16_t next_vuid;
552 int num_validated_vuids;
553 } sessions;
554 struct {
555 connection_struct *Connections;
556 /* number of open connections */
557 struct bitmap *bmap;
558 } tcons;
559 struct smb_signing_state *signing_state;
560 /* List to store partial SPNEGO auth fragments. */
561 struct pending_auth_data *pd_list;
562
563 struct notify_mid_map *notify_mid_maps;
564
565 struct {
566 /* dlink list we store pending lock records on. */
567 struct blocking_lock_record *blocking_lock_queue;
568 /* dlink list we move cancelled lock records onto. */
569 struct blocking_lock_record *blocking_lock_cancelled_queue;
570
571 /* The event that makes us process our blocking lock queue */
572 struct timed_event *brl_timeout;
573
574 bool blocking_lock_unlock_state;
575 bool blocking_lock_cancel_state;
576 } locks;
577 } smb1;
578 struct {
579 struct tevent_context *event_ctx;
580 struct tevent_queue *recv_queue;
581 struct tevent_queue *send_queue;
582 struct tstream_context *stream;
583 struct {
584 /* an id tree used to allocate vuids */
585 /* this holds info on session vuids that are already
586 * validated for this VC */
587 struct idr_context *idtree;
588
589 /* this is the limit of vuid values for this connection */
590 uint64_t limit;
591
592 struct smbd_smb2_session *list;
593 } sessions;
594 struct {
595 /* The event that makes us process our blocking lock queue */
596 struct timed_event *brl_timeout;
597 bool blocking_lock_unlock_state;
598 } locks;
599 struct smbd_smb2_request *requests;
600 uint64_t seqnum_low;
601 uint32_t credits_granted;
602 uint32_t max_credits;
603 struct bitmap *credits_bitmap;
604 } smb2;
605};
606
607extern struct smbd_server_connection *smbd_server_conn;
608
609struct smbd_server_connection *msg_ctx_to_sconn(struct messaging_context *msg_ctx);
610
611void smbd_init_globals(void);
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