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;
50 extern TDB_CONTEXT *tdb_mangled_cache;
53 this determines how many characters are used from the original filename
54 in the 8.3 mangled name. A larger value leads to a weaker hash and more collisions.
55 The largest possible value is 6.
57 extern unsigned mangle_prefix;
60 extern struct msg_state *smbd_msg_state;
62 extern bool logged_ioctl_message;
66 extern time_t last_smb_conf_reload_time;
67 extern time_t last_printer_reload_time;
68 /****************************************************************************
69 structure to hold a linked list of queued messages.
71 ****************************************************************************/
72 struct pending_message_list;
73 extern struct pending_message_list *deferred_open_queue;
74 extern uint32_t common_flags2;
76 struct smb_srv_trans_enc_ctx;
77 extern struct smb_srv_trans_enc_ctx *partial_srv_trans_enc_ctx;
78 extern struct smb_srv_trans_enc_ctx *srv_trans_enc_ctx;
81 struct security_unix_token ut;
82 struct security_token *token;
84 /* A stack of security contexts. We include the current context as being
85 the first one, so there is room for another MAX_SEC_CTX_DEPTH more. */
86 extern struct sec_ctx sec_ctx_stack[MAX_SEC_CTX_DEPTH + 1];
87 extern int sec_ctx_stack_ndx;
88 extern bool become_uid_done;
89 extern bool become_gid_done;
91 extern connection_struct *last_conn;
92 extern uint16_t last_flags;
94 extern uint32_t global_client_caps;
96 extern uint16_t fnf_handle;
99 connection_struct *conn;
102 /* A stack of current_user connection contexts. */
103 extern struct conn_ctx conn_ctx_stack[MAX_SEC_CTX_DEPTH];
104 extern int conn_ctx_stack_ndx;
106 struct vfs_init_function_entry;
107 extern struct vfs_init_function_entry *backends;
108 extern char *sparse_buf;
109 extern char *LastDir;
111 /* Current number of oplocks we have outstanding. */
112 extern int32_t exclusive_oplocks_open;
113 extern int32_t level_II_oplocks_open;
114 extern struct kernel_oplocks *koplocks;
116 extern int am_parent;
117 extern struct event_context *smbd_event_ctx;
118 extern struct messaging_context *smbd_msg_ctx;
119 extern struct memcache *smbd_memcache_ctx;
120 extern bool exit_firsttime;
122 extern struct child_pid *children;
123 extern int num_children;
125 struct tstream_context;
126 struct smbd_smb2_request;
127 struct smbd_smb2_session;
128 struct smbd_smb2_tcon;
130 DATA_BLOB negprot_spnego(TALLOC_CTX *ctx, struct smbd_server_connection *sconn);
132 void smbd_lock_socket(struct smbd_server_connection *sconn);
133 void smbd_unlock_socket(struct smbd_server_connection *sconn);
135 NTSTATUS smb2_signing_sign_pdu(DATA_BLOB session_key,
136 struct iovec *vector,
138 NTSTATUS smb2_signing_check_pdu(DATA_BLOB session_key,
139 const struct iovec *vector,
142 NTSTATUS smbd_do_locking(struct smb_request *req,
147 struct smbd_lock_element *ulocks,
149 struct smbd_lock_element *locks,
152 NTSTATUS smbd_do_qfilepathinfo(connection_struct *conn,
156 struct smb_filename *smb_fname,
158 struct timespec write_time_ts,
159 struct ea_list *ea_list,
163 unsigned int max_data_bytes,
165 unsigned int *pdata_size);
167 NTSTATUS smbd_do_setfilepathinfo(connection_struct *conn,
168 struct smb_request *req,
172 struct smb_filename *smb_fname,
173 char **ppdata, int total_data,
176 NTSTATUS smbd_do_qfsinfo(connection_struct *conn,
180 unsigned int max_data_bytes,
184 bool smbd_dirptr_get_entry(TALLOC_CTX *ctx,
185 struct dptr_struct *dirptr,
190 bool (*match_fn)(TALLOC_CTX *ctx,
195 bool (*mode_fn)(TALLOC_CTX *ctx,
197 struct smb_filename *smb_fname,
201 struct smb_filename **_smb_fname,
205 bool smbd_dirptr_lanman2_entry(TALLOC_CTX *ctx,
206 connection_struct *conn,
207 struct dptr_struct *dirptr,
209 const char *path_mask,
212 int requires_resume_key,
222 bool *got_exact_match,
223 int *_last_entry_off,
224 struct ea_list *name_list);
226 NTSTATUS smbd_check_open_rights(struct connection_struct *conn,
227 const struct smb_filename *smb_fname,
228 uint32_t access_mask,
229 uint32_t *access_granted);
231 void smbd_notify_cancel_by_smbreq(const struct smb_request *smbreq);
233 void smbd_server_connection_terminate_ex(struct smbd_server_connection *sconn,
235 const char *location);
236 #define smbd_server_connection_terminate(sconn, reason) \
237 smbd_server_connection_terminate_ex(sconn, reason, __location__)
239 struct server_id sconn_server_id(const struct smbd_server_connection *sconn);
241 const char *smb2_opcode_name(uint16_t opcode);
242 bool smbd_is_smb2_header(const uint8_t *inbuf, size_t size);
244 void reply_smb2002(struct smb_request *req, uint16_t choice);
245 void smbd_smb2_first_negprot(struct smbd_server_connection *sconn,
246 const uint8_t *inbuf, size_t size);
248 NTSTATUS smbd_smb2_request_error_ex(struct smbd_smb2_request *req,
251 const char *location);
252 #define smbd_smb2_request_error(req, status) \
253 smbd_smb2_request_error_ex(req, status, NULL, __location__)
254 NTSTATUS smbd_smb2_request_done_ex(struct smbd_smb2_request *req,
256 DATA_BLOB body, DATA_BLOB *dyn,
257 const char *location);
258 #define smbd_smb2_request_done(req, body, dyn) \
259 smbd_smb2_request_done_ex(req, NT_STATUS_OK, body, dyn, __location__)
261 NTSTATUS smbd_smb2_send_oplock_break(struct smbd_server_connection *sconn,
262 uint64_t file_id_persistent,
263 uint64_t file_id_volatile,
264 uint8_t oplock_level);
266 NTSTATUS smbd_smb2_request_pending_queue(struct smbd_smb2_request *req,
267 struct tevent_req *subreq);
269 NTSTATUS smbd_smb2_request_check_session(struct smbd_smb2_request *req);
270 NTSTATUS smbd_smb2_request_check_tcon(struct smbd_smb2_request *req);
272 struct smb_request *smbd_smb2_fake_smb_request(struct smbd_smb2_request *req);
273 void remove_smb2_chained_fsp(files_struct *fsp);
275 NTSTATUS smbd_smb2_request_process_negprot(struct smbd_smb2_request *req);
276 NTSTATUS smbd_smb2_request_process_sesssetup(struct smbd_smb2_request *req);
277 NTSTATUS smbd_smb2_request_process_logoff(struct smbd_smb2_request *req);
278 NTSTATUS smbd_smb2_request_process_tcon(struct smbd_smb2_request *req);
279 NTSTATUS smbd_smb2_request_process_tdis(struct smbd_smb2_request *req);
280 NTSTATUS smbd_smb2_request_process_create(struct smbd_smb2_request *req);
281 NTSTATUS smbd_smb2_request_process_close(struct smbd_smb2_request *req);
282 NTSTATUS smbd_smb2_request_process_flush(struct smbd_smb2_request *req);
283 NTSTATUS smbd_smb2_request_process_read(struct smbd_smb2_request *req);
284 NTSTATUS smb2_read_complete(struct tevent_req *req, ssize_t nread, int err);
285 NTSTATUS smbd_smb2_request_process_write(struct smbd_smb2_request *req);
286 NTSTATUS smb2_write_complete(struct tevent_req *req, ssize_t nwritten, int err);
287 NTSTATUS smbd_smb2_request_process_lock(struct smbd_smb2_request *req);
288 NTSTATUS smbd_smb2_request_process_ioctl(struct smbd_smb2_request *req);
289 NTSTATUS smbd_smb2_request_process_keepalive(struct smbd_smb2_request *req);
290 NTSTATUS smbd_smb2_request_process_find(struct smbd_smb2_request *req);
291 NTSTATUS smbd_smb2_request_process_notify(struct smbd_smb2_request *req);
292 NTSTATUS smbd_smb2_request_process_getinfo(struct smbd_smb2_request *req);
293 NTSTATUS smbd_smb2_request_process_setinfo(struct smbd_smb2_request *req);
294 NTSTATUS smbd_smb2_request_process_break(struct smbd_smb2_request *req);
295 NTSTATUS smbd_smb2_request_dispatch(struct smbd_smb2_request *req);
296 void smbd_smb2_request_dispatch_immediate(struct tevent_context *ctx,
297 struct tevent_immediate *im,
300 /* SMB1 -> SMB2 glue. */
301 void send_break_message_smb2(files_struct *fsp, int level);
302 struct blocking_lock_record *get_pending_smb2req_blr(struct smbd_smb2_request *smb2req);
303 bool push_blocking_lock_request_smb2( struct byte_range_lock *br_lck,
304 struct smb_request *req,
309 enum brl_type lock_type,
310 enum brl_flavour lock_flav,
313 uint64_t blocking_smblctx);
314 void process_blocking_lock_queue_smb2(
315 struct smbd_server_connection *sconn, struct timeval tv_curr);
316 void cancel_pending_lock_requests_by_fid_smb2(files_struct *fsp,
317 struct byte_range_lock *br_lck,
318 enum file_close_type close_type);
319 /* From smbd/smb2_create.c */
320 int map_smb2_oplock_levels_to_samba(uint8_t in_oplock_level);
321 bool get_deferred_open_message_state_smb2(struct smbd_smb2_request *smb2req,
322 struct timeval *p_request_time,
324 bool open_was_deferred_smb2(struct smbd_server_connection *sconn,
326 void remove_deferred_open_message_smb2(
327 struct smbd_server_connection *sconn, uint64_t mid);
328 void schedule_deferred_open_message_smb2(
329 struct smbd_server_connection *sconn, uint64_t mid);
330 bool push_deferred_open_message_smb2(struct smbd_smb2_request *smb2req,
331 struct timeval request_time,
332 struct timeval timeout,
337 struct smbd_smb2_request {
338 struct smbd_smb2_request *prev, *next;
340 TALLOC_CTX *mem_pool;
341 struct smbd_smb2_request **parent;
343 struct smbd_server_connection *sconn;
345 /* the session the request operates on, maybe NULL */
346 struct smbd_smb2_session *session;
348 /* the tcon the request operates on, maybe NULL */
349 struct smbd_smb2_tcon *tcon;
356 /* fake smb1 request. */
357 struct smb_request *smb1req;
358 struct files_struct *compat_chain_fsp;
360 NTSTATUS next_status;
363 * The sub request for async backend calls.
364 * This is used for SMB2 Cancel.
366 struct tevent_req *subreq;
369 /* the NBT header is not allocated */
375 * vector[2] fixed body
376 * vector[3] dynamic body
381 * vector[5] fixed body
382 * vector[6] dynamic body
387 struct iovec *vector;
391 /* the NBT header is not allocated */
397 * vector[2] fixed body
398 * vector[3] dynamic body
403 * vector[5] fixed body
404 * vector[6] dynamic body
409 struct iovec *vector;
414 struct smbd_server_connection;
416 struct smbd_smb2_session {
417 struct smbd_smb2_session *prev, *next;
418 struct smbd_server_connection *sconn;
421 struct auth_ntlmssp_state *auth_ntlmssp_state;
422 struct auth_serversupplied_info *session_info;
423 DATA_BLOB session_key;
426 user_struct *compat_vuser;
429 /* an id tree used to allocate tids */
430 struct idr_context *idtree;
432 /* this is the limit of tid values for this connection */
435 struct smbd_smb2_tcon *list;
439 struct smbd_smb2_tcon {
440 struct smbd_smb2_tcon *prev, *next;
441 struct smbd_smb2_session *session;
444 connection_struct *compat_conn;
447 struct pending_auth_data;
449 struct smbd_server_connection {
451 struct client_address client_id;
452 const struct tsocket_address *local_address;
453 const struct tsocket_address *remote_address;
454 struct messaging_context *msg_ctx;
462 * Cache for calling poll(2) to avoid allocations in our
467 struct files_struct *files;
468 struct bitmap *file_bmap;
469 int real_max_open_files;
471 struct fsp_singleton_cache fsp_fi_cache;
472 unsigned long file_gen_counter;
475 /* number of open connections (tcons) */
479 struct fd_event *fde;
483 * fd for the fcntl lock mutexing access to our sock
488 * fd for the trusted pipe from
494 * fde for the trusted_fd
496 struct fd_event *trusted_fde;
499 * Reference count for the fcntl lock to
500 * allow recursive locks.
505 uint64_t num_requests;
507 bool encrypted_passwords;
509 struct auth_context *auth_context;
512 * Size of the data we can receive. Set by us.
513 * Can be modified by the max xmit parameter.
521 * Size of data we can send to client. Set
522 * by the client for all protocols above CORE.
523 * Set by us for CORE protocol.
526 uint16_t last_session_tag;
528 /* users from session setup */
529 char *session_userlist;
530 /* workgroup from session setup. */
531 char *session_workgroup;
533 * this holds info on user ids that are already
534 * validated for this VC
536 user_struct *validated_users;
538 int num_validated_vuids;
541 connection_struct *Connections;
542 /* number of open connections */
545 struct smb_signing_state *signing_state;
546 /* List to store partial SPNEGO auth fragments. */
547 struct pending_auth_data *pd_list;
549 struct notify_mid_map *notify_mid_maps;
552 struct bitmap *dptr_bmap;
553 struct dptr_struct *dirptrs;
557 /* dlink list we store pending lock records on. */
558 struct blocking_lock_record *blocking_lock_queue;
559 /* dlink list we move cancelled lock records onto. */
560 struct blocking_lock_record *blocking_lock_cancelled_queue;
562 /* The event that makes us process our blocking lock queue */
563 struct timed_event *brl_timeout;
565 bool blocking_lock_unlock_state;
566 bool blocking_lock_cancel_state;
570 struct tevent_context *event_ctx;
571 struct tevent_queue *recv_queue;
572 struct tevent_queue *send_queue;
573 struct tstream_context *stream;
575 /* an id tree used to allocate vuids */
576 /* this holds info on session vuids that are already
577 * validated for this VC */
578 struct idr_context *idtree;
580 /* this is the limit of vuid values for this connection */
583 struct smbd_smb2_session *list;
586 /* The event that makes us process our blocking lock queue */
587 struct timed_event *brl_timeout;
588 bool blocking_lock_unlock_state;
590 struct smbd_smb2_request *requests;
592 uint32_t credits_granted;
593 uint32_t max_credits;
594 struct bitmap *credits_bitmap;
598 extern struct smbd_server_connection *smbd_server_conn;
600 struct smbd_server_connection *msg_ctx_to_sconn(struct messaging_context *msg_ctx);
602 void smbd_init_globals(void);