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];
67 extern char *last_from;
71 extern struct msg_state *smbd_msg_state;
73 extern bool logged_ioctl_message;
78 extern time_t last_smb_conf_reload_time;
79 extern time_t last_printer_reload_time;
80 /****************************************************************************
81 structure to hold a linked list of queued messages.
83 ****************************************************************************/
84 struct pending_message_list;
85 extern struct pending_message_list *deferred_open_queue;
86 extern uint32_t common_flags2;
88 struct smb_srv_trans_enc_ctx;
89 extern struct smb_srv_trans_enc_ctx *partial_srv_trans_enc_ctx;
90 extern struct smb_srv_trans_enc_ctx *srv_trans_enc_ctx;
96 /* A stack of security contexts. We include the current context as being
97 the first one, so there is room for another MAX_SEC_CTX_DEPTH more. */
98 extern struct sec_ctx sec_ctx_stack[MAX_SEC_CTX_DEPTH + 1];
99 extern int sec_ctx_stack_ndx;
100 extern bool become_uid_done;
101 extern bool become_gid_done;
103 extern connection_struct *last_conn;
104 extern uint16_t last_flags;
106 extern uint32_t global_client_caps;
108 extern uint16_t fnf_handle;
111 connection_struct *conn;
114 /* A stack of current_user connection contexts. */
115 extern struct conn_ctx conn_ctx_stack[MAX_SEC_CTX_DEPTH];
116 extern int conn_ctx_stack_ndx;
118 struct vfs_init_function_entry;
119 extern struct vfs_init_function_entry *backends;
120 extern char *sparse_buf;
122 /* Current number of oplocks we have outstanding. */
123 extern int32_t exclusive_oplocks_open;
124 extern int32_t level_II_oplocks_open;
125 extern bool global_client_failed_oplock_break;
126 extern struct kernel_oplocks *koplocks;
128 extern int am_parent;
129 extern int server_fd;
130 extern struct event_context *smbd_event_ctx;
131 extern struct messaging_context *smbd_msg_ctx;
132 extern struct memcache *smbd_memcache_ctx;
133 extern bool exit_firsttime;
135 extern struct child_pid *children;
136 extern int num_children;
138 struct tstream_context;
139 struct smbd_smb2_request;
140 struct smbd_smb2_session;
141 struct smbd_smb2_tcon;
143 DATA_BLOB negprot_spnego(void);
145 void smbd_lock_socket(struct smbd_server_connection *sconn);
146 void smbd_unlock_socket(struct smbd_server_connection *sconn);
148 NTSTATUS smb2_signing_sign_pdu(DATA_BLOB session_key,
149 struct iovec *vector,
151 NTSTATUS smb2_signing_check_pdu(DATA_BLOB session_key,
152 const struct iovec *vector,
155 struct smbd_lock_element {
157 enum brl_type brltype;
162 NTSTATUS smbd_do_locking(struct smb_request *req,
167 struct smbd_lock_element *ulocks,
169 struct smbd_lock_element *locks,
172 NTSTATUS smbd_do_qfilepathinfo(connection_struct *conn,
176 struct smb_filename *smb_fname,
178 struct timespec write_time_ts,
179 struct ea_list *ea_list,
183 unsigned int max_data_bytes,
185 unsigned int *pdata_size);
187 NTSTATUS smbd_do_setfilepathinfo(connection_struct *conn,
188 struct smb_request *req,
192 struct smb_filename *smb_fname,
193 char **ppdata, int total_data,
196 NTSTATUS smbd_do_qfsinfo(connection_struct *conn,
200 unsigned int max_data_bytes,
204 bool smbd_dirptr_get_entry(TALLOC_CTX *ctx,
205 struct dptr_struct *dirptr,
210 bool (*match_fn)(TALLOC_CTX *ctx,
215 bool (*mode_fn)(TALLOC_CTX *ctx,
217 struct smb_filename *smb_fname,
221 struct smb_filename **_smb_fname,
225 bool smbd_dirptr_lanman2_entry(TALLOC_CTX *ctx,
226 connection_struct *conn,
227 struct dptr_struct *dirptr,
229 const char *path_mask,
232 int requires_resume_key,
242 bool *got_exact_match,
243 int *_last_entry_off,
244 struct ea_list *name_list);
246 NTSTATUS smbd_check_open_rights(struct connection_struct *conn,
247 const struct smb_filename *smb_fname,
248 uint32_t access_mask,
249 uint32_t *access_granted);
251 void smbd_notify_cancel_by_smbreq(struct smbd_server_connection *sconn,
252 const struct smb_request *smbreq);
254 void smbd_server_connection_terminate_ex(struct smbd_server_connection *sconn,
256 const char *location);
257 #define smbd_server_connection_terminate(sconn, reason) \
258 smbd_server_connection_terminate_ex(sconn, reason, __location__)
260 bool smbd_is_smb2_header(const uint8_t *inbuf, size_t size);
262 void reply_smb2002(struct smb_request *req, uint16_t choice);
263 void smbd_smb2_first_negprot(struct smbd_server_connection *sconn,
264 const uint8_t *inbuf, size_t size);
266 NTSTATUS smbd_smb2_request_error_ex(struct smbd_smb2_request *req,
269 const char *location);
270 #define smbd_smb2_request_error(req, status) \
271 smbd_smb2_request_error_ex(req, status, NULL, __location__)
272 NTSTATUS smbd_smb2_request_done_ex(struct smbd_smb2_request *req,
274 DATA_BLOB body, DATA_BLOB *dyn,
275 const char *location);
276 #define smbd_smb2_request_done(req, body, dyn) \
277 smbd_smb2_request_done_ex(req, NT_STATUS_OK, body, dyn, __location__)
279 NTSTATUS smbd_smb2_send_oplock_break(struct smbd_server_connection *sconn,
280 uint64_t file_id_volatile,
281 uint8_t oplock_level);
283 NTSTATUS smbd_smb2_request_pending_queue(struct smbd_smb2_request *req,
284 struct tevent_req *subreq);
286 NTSTATUS smbd_smb2_request_check_session(struct smbd_smb2_request *req);
287 NTSTATUS smbd_smb2_request_check_tcon(struct smbd_smb2_request *req);
289 struct smb_request *smbd_smb2_fake_smb_request(struct smbd_smb2_request *req);
291 NTSTATUS smbd_smb2_request_process_negprot(struct smbd_smb2_request *req);
292 NTSTATUS smbd_smb2_request_process_sesssetup(struct smbd_smb2_request *req);
293 NTSTATUS smbd_smb2_request_process_logoff(struct smbd_smb2_request *req);
294 NTSTATUS smbd_smb2_request_process_tcon(struct smbd_smb2_request *req);
295 NTSTATUS smbd_smb2_request_process_tdis(struct smbd_smb2_request *req);
296 NTSTATUS smbd_smb2_request_process_create(struct smbd_smb2_request *req);
297 NTSTATUS smbd_smb2_request_process_close(struct smbd_smb2_request *req);
298 NTSTATUS smbd_smb2_request_process_flush(struct smbd_smb2_request *req);
299 NTSTATUS smbd_smb2_request_process_read(struct smbd_smb2_request *req);
300 NTSTATUS smbd_smb2_request_process_write(struct smbd_smb2_request *req);
301 NTSTATUS smbd_smb2_request_process_lock(struct smbd_smb2_request *req);
302 NTSTATUS smbd_smb2_request_process_ioctl(struct smbd_smb2_request *req);
303 NTSTATUS smbd_smb2_request_process_keepalive(struct smbd_smb2_request *req);
304 NTSTATUS smbd_smb2_request_process_find(struct smbd_smb2_request *req);
305 NTSTATUS smbd_smb2_request_process_notify(struct smbd_smb2_request *req);
306 NTSTATUS smbd_smb2_request_process_getinfo(struct smbd_smb2_request *req);
307 NTSTATUS smbd_smb2_request_process_setinfo(struct smbd_smb2_request *req);
308 NTSTATUS smbd_smb2_request_process_break(struct smbd_smb2_request *req);
309 NTSTATUS smbd_smb2_request_dispatch(struct smbd_smb2_request *req);
310 void smbd_smb2_request_dispatch_immediate(struct tevent_context *ctx,
311 struct tevent_immediate *im,
314 /* SMB1 -> SMB2 glue. */
315 void send_break_message_smb2(files_struct *fsp, int level);
316 bool push_blocking_lock_request_smb2( struct byte_range_lock *br_lck,
317 struct smb_request *req,
322 enum brl_type lock_type,
323 enum brl_flavour lock_flav,
326 uint32_t blocking_pid);
327 void cancel_pending_lock_requests_by_fid_smb2(files_struct *fsp,
328 struct byte_range_lock *br_lck);
329 /* From smbd/smb2_create.c */
330 int map_smb2_oplock_levels_to_samba(uint8_t in_oplock_level);
331 uint8_t map_samba_oplock_levels_to_smb2(int oplock_type);
332 bool get_deferred_open_message_state_smb2(struct smbd_smb2_request *smb2req,
333 struct timeval *p_request_time,
335 bool open_was_deferred_smb2(uint64_t mid);
336 void remove_deferred_open_message_smb2(uint64_t mid);
337 void schedule_deferred_open_message_smb2(uint64_t mid);
338 bool push_deferred_open_message_smb2(struct smbd_smb2_request *smb2req,
339 struct timeval request_time,
340 struct timeval timeout,
345 struct smbd_smb2_request {
346 struct smbd_smb2_request *prev, *next;
348 TALLOC_CTX *mem_pool;
349 struct smbd_smb2_request **parent;
351 struct smbd_server_connection *sconn;
353 /* the session the request operates on, maybe NULL */
354 struct smbd_smb2_session *session;
356 /* the tcon the request operates on, maybe NULL */
357 struct smbd_smb2_tcon *tcon;
364 struct files_struct *compat_chain_fsp;
366 NTSTATUS next_status;
369 * The sub request for async backend calls.
370 * This is used for SMB2 Cancel.
372 struct tevent_req *subreq;
375 /* the NBT header is not allocated */
381 * vector[2] fixed body
382 * vector[3] dynamic body
387 * vector[5] fixed body
388 * vector[6] dynamic body
393 struct iovec *vector;
397 /* the NBT header is not allocated */
403 * vector[2] fixed body
404 * vector[3] dynamic body
409 * vector[5] fixed body
410 * vector[6] dynamic body
415 struct iovec *vector;
420 struct smbd_server_connection;
422 struct smbd_smb2_session {
423 struct smbd_smb2_session *prev, *next;
424 struct smbd_server_connection *sconn;
427 AUTH_NTLMSSP_STATE *auth_ntlmssp_state;
428 struct auth_serversupplied_info *server_info;
429 DATA_BLOB session_key;
432 user_struct *compat_vuser;
435 /* an id tree used to allocate tids */
436 struct idr_context *idtree;
438 /* this is the limit of tid values for this connection */
441 struct smbd_smb2_tcon *list;
445 struct smbd_smb2_tcon {
446 struct smbd_smb2_tcon *prev, *next;
447 struct smbd_smb2_session *session;
450 connection_struct *compat_conn;
453 struct pending_auth_data;
455 struct smbd_server_connection {
456 const struct tsocket_address *local_address;
457 const struct tsocket_address *remote_address;
463 struct fd_event *fde;
467 * fd for the fcntl lock mutexing access to smbd_server_fd
472 * fd for the trusted pipe from
478 * fde for the trusted_fd
480 struct fd_event *trusted_fde;
483 * Reference count for the fcntl lock to
484 * allow recursive locks.
489 uint64_t num_requests;
491 bool encrypted_passwords;
493 struct auth_context *auth_context;
496 * Size of the data we can receive. Set by us.
497 * Can be modified by the max xmit parameter.
505 * Size of data we can send to client. Set
506 * by the client for all protocols above CORE.
507 * Set by us for CORE protocol.
510 uint16_t last_session_tag;
512 /* users from session setup */
513 char *session_userlist;
514 /* workgroup from session setup. */
515 char *session_workgroup;
517 * this holds info on user ids that are already
518 * validated for this VC
520 user_struct *validated_users;
522 int num_validated_vuids;
528 connection_struct *Connections;
529 /* number of open connections */
533 struct smb_signing_state *signing_state;
534 /* List to store partial SPNEGO auth fragments. */
535 struct pending_auth_data *pd_list;
537 struct notify_mid_map *notify_mid_maps;
540 struct bitmap *dptr_bmap;
541 struct dptr_struct *dirptrs;
545 /* dlink list we store pending lock records on. */
546 struct blocking_lock_record *blocking_lock_queue;
547 /* dlink list we move cancelled lock records onto. */
548 struct blocking_lock_record *blocking_lock_cancelled_queue;
550 /* The event that makes us process our blocking lock queue */
551 struct timed_event *brl_timeout;
553 bool blocking_lock_unlock_state;
554 bool blocking_lock_cancel_state;
558 struct tevent_context *event_ctx;
559 struct tevent_queue *recv_queue;
560 struct tevent_queue *send_queue;
561 struct tstream_context *stream;
563 /* an id tree used to allocate vuids */
564 /* this holds info on session vuids that are already
565 * validated for this VC */
566 struct idr_context *idtree;
568 /* this is the limit of vuid values for this connection */
571 struct smbd_smb2_session *list;
573 struct smbd_smb2_request *requests;
577 extern struct smbd_server_connection *smbd_server_conn;
579 void smbd_init_globals(void);