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/>.
23 extern struct aio_extra *aio_list_head;
24 extern struct tevent_signal *aio_signal_event;
25 extern int aio_pending_size;
26 extern int outstanding_aio_calls;
30 struct smbd_dmapi_context;
31 extern struct smbd_dmapi_context *dmapi_ctx;
34 extern bool dfree_broken;
36 /* how many write cache buffers have been allocated */
37 extern unsigned int allocated_write_caches;
39 extern int real_max_open_files;
40 extern struct bitmap *file_bmap;
41 extern files_struct *Files;
42 extern int files_used;
43 /* A singleton cache to speed up searching by dev/inode. */
44 struct fsp_singleton_cache {
48 extern struct fsp_singleton_cache fsp_fi_cache;
49 extern unsigned long file_gen_counter;
50 extern int first_file;
52 extern const struct mangle_fns *mangle_fns;
54 extern unsigned char *chartest;
55 extern TDB_CONTEXT *tdb_mangled_cache;
57 /* these tables are used to provide fast tests for characters */
58 extern unsigned char char_flags[256];
60 this determines how many characters are used from the original filename
61 in the 8.3 mangled name. A larger value leads to a weaker hash and more collisions.
62 The largest possible value is 6.
64 extern unsigned mangle_prefix;
65 extern unsigned char base_reverse[256];
68 extern struct msg_state *smbd_msg_state;
70 extern bool logged_ioctl_message;
75 extern time_t last_smb_conf_reload_time;
76 extern time_t last_printer_reload_time;
77 /****************************************************************************
78 structure to hold a linked list of queued messages.
80 ****************************************************************************/
81 struct pending_message_list;
82 extern struct pending_message_list *deferred_open_queue;
83 extern uint32_t common_flags2;
85 struct smb_srv_trans_enc_ctx;
86 extern struct smb_srv_trans_enc_ctx *partial_srv_trans_enc_ctx;
87 extern struct smb_srv_trans_enc_ctx *srv_trans_enc_ctx;
93 /* A stack of security contexts. We include the current context as being
94 the first one, so there is room for another MAX_SEC_CTX_DEPTH more. */
95 extern struct sec_ctx sec_ctx_stack[MAX_SEC_CTX_DEPTH + 1];
96 extern int sec_ctx_stack_ndx;
97 extern bool become_uid_done;
98 extern bool become_gid_done;
100 extern connection_struct *last_conn;
101 extern uint16_t last_flags;
103 extern uint32_t global_client_caps;
105 extern uint16_t fnf_handle;
108 connection_struct *conn;
111 /* A stack of current_user connection contexts. */
112 extern struct conn_ctx conn_ctx_stack[MAX_SEC_CTX_DEPTH];
113 extern int conn_ctx_stack_ndx;
115 struct vfs_init_function_entry;
116 extern struct vfs_init_function_entry *backends;
117 extern char *sparse_buf;
119 /* Current number of oplocks we have outstanding. */
120 extern int32_t exclusive_oplocks_open;
121 extern int32_t level_II_oplocks_open;
122 extern struct kernel_oplocks *koplocks;
124 extern int am_parent;
125 extern int server_fd;
126 extern struct event_context *smbd_event_ctx;
127 extern struct messaging_context *smbd_msg_ctx;
128 extern struct memcache *smbd_memcache_ctx;
129 extern bool exit_firsttime;
131 extern struct child_pid *children;
132 extern int num_children;
134 struct tstream_context;
135 struct smbd_smb2_request;
136 struct smbd_smb2_session;
137 struct smbd_smb2_tcon;
139 DATA_BLOB negprot_spnego(struct smbd_server_connection *sconn);
141 void smbd_lock_socket(struct smbd_server_connection *sconn);
142 void smbd_unlock_socket(struct smbd_server_connection *sconn);
144 NTSTATUS smb2_signing_sign_pdu(DATA_BLOB session_key,
145 struct iovec *vector,
147 NTSTATUS smb2_signing_check_pdu(DATA_BLOB session_key,
148 const struct iovec *vector,
151 NTSTATUS smbd_do_locking(struct smb_request *req,
156 struct smbd_lock_element *ulocks,
158 struct smbd_lock_element *locks,
161 NTSTATUS smbd_do_qfilepathinfo(connection_struct *conn,
165 struct smb_filename *smb_fname,
167 struct timespec write_time_ts,
168 struct ea_list *ea_list,
172 unsigned int max_data_bytes,
174 unsigned int *pdata_size);
176 NTSTATUS smbd_do_setfilepathinfo(connection_struct *conn,
177 struct smb_request *req,
181 struct smb_filename *smb_fname,
182 char **ppdata, int total_data,
185 NTSTATUS smbd_do_qfsinfo(connection_struct *conn,
189 unsigned int max_data_bytes,
193 bool smbd_dirptr_get_entry(TALLOC_CTX *ctx,
194 struct dptr_struct *dirptr,
199 bool (*match_fn)(TALLOC_CTX *ctx,
204 bool (*mode_fn)(TALLOC_CTX *ctx,
206 struct smb_filename *smb_fname,
210 struct smb_filename **_smb_fname,
214 bool smbd_dirptr_lanman2_entry(TALLOC_CTX *ctx,
215 connection_struct *conn,
216 struct dptr_struct *dirptr,
218 const char *path_mask,
221 int requires_resume_key,
231 bool *got_exact_match,
232 int *_last_entry_off,
233 struct ea_list *name_list);
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);
240 void smbd_notify_cancel_by_smbreq(const struct smb_request *smbreq);
242 void smbd_server_connection_terminate_ex(struct smbd_server_connection *sconn,
244 const char *location);
245 #define smbd_server_connection_terminate(sconn, reason) \
246 smbd_server_connection_terminate_ex(sconn, reason, __location__)
248 struct server_id sconn_server_id(const struct smbd_server_connection *sconn);
250 const char *smb2_opcode_name(uint16_t opcode);
251 bool smbd_is_smb2_header(const uint8_t *inbuf, size_t size);
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);
257 NTSTATUS smbd_smb2_request_error_ex(struct smbd_smb2_request *req,
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,
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__)
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);
275 NTSTATUS smbd_smb2_request_pending_queue(struct smbd_smb2_request *req,
276 struct tevent_req *subreq);
278 NTSTATUS smbd_smb2_request_check_session(struct smbd_smb2_request *req);
279 NTSTATUS smbd_smb2_request_check_tcon(struct smbd_smb2_request *req);
281 struct smb_request *smbd_smb2_fake_smb_request(struct smbd_smb2_request *req);
282 void remove_smb2_chained_fsp(files_struct *fsp);
284 NTSTATUS smbd_smb2_request_process_negprot(struct smbd_smb2_request *req);
285 NTSTATUS smbd_smb2_request_process_sesssetup(struct smbd_smb2_request *req);
286 NTSTATUS smbd_smb2_request_process_logoff(struct smbd_smb2_request *req);
287 NTSTATUS smbd_smb2_request_process_tcon(struct smbd_smb2_request *req);
288 NTSTATUS smbd_smb2_request_process_tdis(struct smbd_smb2_request *req);
289 NTSTATUS smbd_smb2_request_process_create(struct smbd_smb2_request *req);
290 NTSTATUS smbd_smb2_request_process_close(struct smbd_smb2_request *req);
291 NTSTATUS smbd_smb2_request_process_flush(struct smbd_smb2_request *req);
292 NTSTATUS smbd_smb2_request_process_read(struct smbd_smb2_request *req);
293 NTSTATUS smb2_read_complete(struct tevent_req *req, ssize_t nread, int err);
294 NTSTATUS smbd_smb2_request_process_write(struct smbd_smb2_request *req);
295 NTSTATUS smb2_write_complete(struct tevent_req *req, ssize_t nwritten, int err);
296 NTSTATUS smbd_smb2_request_process_lock(struct smbd_smb2_request *req);
297 NTSTATUS smbd_smb2_request_process_ioctl(struct smbd_smb2_request *req);
298 NTSTATUS smbd_smb2_request_process_keepalive(struct smbd_smb2_request *req);
299 NTSTATUS smbd_smb2_request_process_find(struct smbd_smb2_request *req);
300 NTSTATUS smbd_smb2_request_process_notify(struct smbd_smb2_request *req);
301 NTSTATUS smbd_smb2_request_process_getinfo(struct smbd_smb2_request *req);
302 NTSTATUS smbd_smb2_request_process_setinfo(struct smbd_smb2_request *req);
303 NTSTATUS smbd_smb2_request_process_break(struct smbd_smb2_request *req);
304 NTSTATUS smbd_smb2_request_dispatch(struct smbd_smb2_request *req);
305 void smbd_smb2_request_dispatch_immediate(struct tevent_context *ctx,
306 struct tevent_immediate *im,
309 /* SMB1 -> SMB2 glue. */
310 void send_break_message_smb2(files_struct *fsp, int level);
311 struct blocking_lock_record *get_pending_smb2req_blr(struct smbd_smb2_request *smb2req);
312 bool push_blocking_lock_request_smb2( struct byte_range_lock *br_lck,
313 struct smb_request *req,
318 enum brl_type lock_type,
319 enum brl_flavour lock_flav,
322 uint64_t blocking_smblctx);
323 void process_blocking_lock_queue_smb2(
324 struct smbd_server_connection *sconn, struct timeval tv_curr);
325 void 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 */
329 int map_smb2_oplock_levels_to_samba(uint8_t in_oplock_level);
330 bool get_deferred_open_message_state_smb2(struct smbd_smb2_request *smb2req,
331 struct timeval *p_request_time,
333 bool open_was_deferred_smb2(struct smbd_server_connection *sconn,
335 void remove_deferred_open_message_smb2(
336 struct smbd_server_connection *sconn, uint64_t mid);
337 void schedule_deferred_open_message_smb2(
338 struct smbd_server_connection *sconn, uint64_t mid);
339 bool push_deferred_open_message_smb2(struct smbd_smb2_request *smb2req,
340 struct timeval request_time,
341 struct timeval timeout,
346 struct smbd_smb2_request {
347 struct smbd_smb2_request *prev, *next;
349 TALLOC_CTX *mem_pool;
350 struct smbd_smb2_request **parent;
352 struct smbd_server_connection *sconn;
354 /* the session the request operates on, maybe NULL */
355 struct smbd_smb2_session *session;
357 /* the tcon the request operates on, maybe NULL */
358 struct smbd_smb2_tcon *tcon;
365 /* fake smb1 request. */
366 struct smb_request *smb1req;
367 struct files_struct *compat_chain_fsp;
369 NTSTATUS next_status;
372 * The sub request for async backend calls.
373 * This is used for SMB2 Cancel.
375 struct tevent_req *subreq;
378 /* the NBT header is not allocated */
384 * vector[2] fixed body
385 * vector[3] dynamic body
390 * vector[5] fixed body
391 * vector[6] dynamic body
396 struct iovec *vector;
400 /* the NBT header is not allocated */
406 * vector[2] fixed body
407 * vector[3] dynamic body
412 * vector[5] fixed body
413 * vector[6] dynamic body
418 struct iovec *vector;
423 struct smbd_server_connection;
425 struct smbd_smb2_session {
426 struct smbd_smb2_session *prev, *next;
427 struct smbd_server_connection *sconn;
430 struct auth_ntlmssp_state *auth_ntlmssp_state;
431 struct auth_serversupplied_info *server_info;
432 DATA_BLOB session_key;
435 user_struct *compat_vuser;
438 /* an id tree used to allocate tids */
439 struct idr_context *idtree;
441 /* this is the limit of tid values for this connection */
444 struct smbd_smb2_tcon *list;
448 struct smbd_smb2_tcon {
449 struct smbd_smb2_tcon *prev, *next;
450 struct smbd_smb2_session *session;
453 connection_struct *compat_conn;
456 struct pending_auth_data;
458 struct smbd_server_connection {
459 const struct tsocket_address *local_address;
460 const struct tsocket_address *remote_address;
461 struct messaging_context *msg_ctx;
467 struct fd_event *fde;
471 * fd for the fcntl lock mutexing access to smbd_server_fd
476 * fd for the trusted pipe from
482 * fde for the trusted_fd
484 struct fd_event *trusted_fde;
487 * Reference count for the fcntl lock to
488 * allow recursive locks.
493 uint64_t num_requests;
495 bool encrypted_passwords;
497 struct auth_context *auth_context;
500 * Size of the data we can receive. Set by us.
501 * Can be modified by the max xmit parameter.
509 * Size of data we can send to client. Set
510 * by the client for all protocols above CORE.
511 * Set by us for CORE protocol.
514 uint16_t last_session_tag;
516 /* users from session setup */
517 char *session_userlist;
518 /* workgroup from session setup. */
519 char *session_workgroup;
521 * this holds info on user ids that are already
522 * validated for this VC
524 user_struct *validated_users;
526 int num_validated_vuids;
529 connection_struct *Connections;
530 /* number of open connections */
534 struct smb_signing_state *signing_state;
535 /* List to store partial SPNEGO auth fragments. */
536 struct pending_auth_data *pd_list;
538 struct notify_mid_map *notify_mid_maps;
541 struct bitmap *dptr_bmap;
542 struct dptr_struct *dirptrs;
546 /* dlink list we store pending lock records on. */
547 struct blocking_lock_record *blocking_lock_queue;
548 /* dlink list we move cancelled lock records onto. */
549 struct blocking_lock_record *blocking_lock_cancelled_queue;
551 /* The event that makes us process our blocking lock queue */
552 struct timed_event *brl_timeout;
554 bool blocking_lock_unlock_state;
555 bool blocking_lock_cancel_state;
559 struct tevent_context *event_ctx;
560 struct tevent_queue *recv_queue;
561 struct tevent_queue *send_queue;
562 struct tstream_context *stream;
564 /* an id tree used to allocate vuids */
565 /* this holds info on session vuids that are already
566 * validated for this VC */
567 struct idr_context *idtree;
569 /* this is the limit of vuid values for this connection */
572 struct smbd_smb2_session *list;
575 /* The event that makes us process our blocking lock queue */
576 struct timed_event *brl_timeout;
577 bool blocking_lock_unlock_state;
579 struct smbd_smb2_request *requests;
580 uint64_t credits_granted;
584 extern struct smbd_server_connection *smbd_server_conn;
586 void smbd_init_globals(void);