2 Unix SMB/CIFS implementation.
3 Blocking Locking functions
4 Copyright (C) Jeremy Allison 1998-2003
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 #define DBGC_CLASS DBGC_LOCKING
27 /****************************************************************************
28 This is the structure to queue to implement blocking locks.
29 notify. It consists of the requesting SMB and the expiry time.
30 *****************************************************************************/
32 typedef struct _blocking_lock_record
{
33 struct _blocking_lock_record
*next
;
34 struct _blocking_lock_record
*prev
;
37 struct timeval expire_time
;
42 uint32 blocking_pid
; /* PID that blocks us. */
43 enum brl_flavour lock_flav
;
44 enum brl_type lock_type
;
47 } blocking_lock_record
;
49 /* dlink list we store pending lock records on. */
50 static blocking_lock_record
*blocking_lock_queue
;
52 /* dlink list we move cancelled lock records onto. */
53 static blocking_lock_record
*blocking_lock_cancelled_queue
;
55 /****************************************************************************
56 Destructor for the above structure.
57 ****************************************************************************/
59 static void free_blocking_lock_record(blocking_lock_record
*blr
)
61 SAFE_FREE(blr
->inbuf
);
65 /****************************************************************************
66 Determine if this is a secondary element of a chained SMB.
67 **************************************************************************/
69 static BOOL
in_chained_smb(void)
71 return (chain_size
!= 0);
74 static void received_unlock_msg(int msg_type
, struct process_id src
,
75 void *buf
, size_t len
,
78 /****************************************************************************
79 Function to push a blocking lock request onto the lock queue.
80 ****************************************************************************/
82 BOOL
push_blocking_lock_request( struct byte_range_lock
*br_lck
,
83 char *inbuf
, int length
,
88 enum brl_type lock_type
,
89 enum brl_flavour lock_flav
,
94 static BOOL set_lock_msg
;
95 blocking_lock_record
*blr
;
98 if(in_chained_smb() ) {
99 DEBUG(0,("push_blocking_lock_request: cannot queue a chained request (currently).\n"));
104 * Now queue an entry on the blocking lock queue. We setup
105 * the expiration time here.
108 if((blr
= SMB_MALLOC_P(blocking_lock_record
)) == NULL
) {
109 DEBUG(0,("push_blocking_lock_request: Malloc fail !\n" ));
116 if((blr
->inbuf
= (char *)SMB_MALLOC(length
)) == NULL
) {
117 DEBUG(0,("push_blocking_lock_request: Malloc fail (2)!\n" ));
122 blr
->com_type
= CVAL(inbuf
,smb_com
);
124 if (lock_timeout
== -1) {
125 blr
->expire_time
.tv_sec
= 0;
126 blr
->expire_time
.tv_usec
= 0; /* Never expire. */
128 blr
->expire_time
= timeval_current_ofs(lock_timeout
/1000,
129 (lock_timeout
% 1000) * 1000);
131 blr
->lock_num
= lock_num
;
132 blr
->lock_pid
= lock_pid
;
133 blr
->blocking_pid
= blocking_pid
;
134 blr
->lock_flav
= lock_flav
;
135 blr
->lock_type
= lock_type
;
136 blr
->offset
= offset
;
138 memcpy(blr
->inbuf
, inbuf
, length
);
139 blr
->length
= length
;
141 /* Add a pending lock record for this. */
142 status
= brl_lock(br_lck
,
147 lock_type
== READ_LOCK
? PENDING_READ_LOCK
: PENDING_WRITE_LOCK
,
149 lock_timeout
? True
: False
, /* blocking_lock. */
152 if (!NT_STATUS_IS_OK(status
)) {
153 DEBUG(0,("push_blocking_lock_request: failed to add PENDING_LOCK record.\n"));
154 DLIST_REMOVE(blocking_lock_queue
, blr
);
155 free_blocking_lock_record(blr
);
159 DLIST_ADD_END(blocking_lock_queue
, blr
, blocking_lock_record
*);
161 /* Ensure we'll receive messages when this is unlocked. */
163 message_register(MSG_SMB_UNLOCK
, received_unlock_msg
,
168 DEBUG(3,("push_blocking_lock_request: lock request length=%d blocked with "
169 "expiry time (%u sec. %u usec) (+%d msec) for fnum = %d, name = %s\n",
170 length
, (unsigned int)blr
->expire_time
.tv_sec
,
171 (unsigned int)blr
->expire_time
.tv_usec
, lock_timeout
,
172 blr
->fsp
->fnum
, blr
->fsp
->fsp_name
));
174 /* Push the MID of this packet on the signing queue. */
175 srv_defer_sign_response(SVAL(inbuf
,smb_mid
));
180 /****************************************************************************
181 Return a smd with a given size.
182 *****************************************************************************/
184 static void send_blocking_reply(char *outbuf
, int outsize
)
187 smb_setlen(outbuf
,outsize
- 4);
189 if (!send_smb(smbd_server_fd(),outbuf
))
190 exit_server_cleanly("send_blocking_reply: send_smb failed.");
193 /****************************************************************************
194 Return a lockingX success SMB.
195 *****************************************************************************/
197 static void reply_lockingX_success(blocking_lock_record
*blr
)
199 char *outbuf
= get_OutBuffer();
200 int bufsize
= BUFFER_SIZE
;
201 char *inbuf
= blr
->inbuf
;
204 construct_reply_common(inbuf
, outbuf
);
205 set_message(outbuf
,2,0,True
);
208 * As this message is a lockingX call we must handle
209 * any following chained message correctly.
210 * This is normally handled in construct_reply(),
211 * but as that calls switch_message, we can't use
212 * that here and must set up the chain info manually.
215 outsize
= chain_reply(inbuf
,outbuf
,blr
->length
,bufsize
);
217 outsize
+= chain_size
;
219 send_blocking_reply(outbuf
,outsize
);
222 /****************************************************************************
223 Return a generic lock fail error blocking call.
224 *****************************************************************************/
226 static void generic_blocking_lock_error(blocking_lock_record
*blr
, NTSTATUS status
)
228 char *outbuf
= get_OutBuffer();
229 char *inbuf
= blr
->inbuf
;
230 construct_reply_common(inbuf
, outbuf
);
232 /* whenever a timeout is given w2k maps LOCK_NOT_GRANTED to
233 FILE_LOCK_CONFLICT! (tridge) */
234 if (NT_STATUS_EQUAL(status
, NT_STATUS_LOCK_NOT_GRANTED
)) {
235 status
= NT_STATUS_FILE_LOCK_CONFLICT
;
238 if (NT_STATUS_EQUAL(status
, NT_STATUS_FILE_LOCK_CONFLICT
)) {
239 /* Store the last lock error. */
240 files_struct
*fsp
= blr
->fsp
;
242 fsp
->last_lock_failure
.context
.smbpid
= blr
->lock_pid
;
243 fsp
->last_lock_failure
.context
.tid
= fsp
->conn
->cnum
;
244 fsp
->last_lock_failure
.context
.pid
= procid_self();
245 fsp
->last_lock_failure
.start
= blr
->offset
;
246 fsp
->last_lock_failure
.size
= blr
->count
;
247 fsp
->last_lock_failure
.fnum
= fsp
->fnum
;
248 fsp
->last_lock_failure
.lock_type
= READ_LOCK
; /* Don't care. */
249 fsp
->last_lock_failure
.lock_flav
= blr
->lock_flav
;
253 if (!send_smb(smbd_server_fd(),outbuf
)) {
254 exit_server_cleanly("generic_blocking_lock_error: send_smb failed.");
258 /****************************************************************************
259 Return a lock fail error for a lockingX call. Undo all the locks we have
261 *****************************************************************************/
263 static void reply_lockingX_error(blocking_lock_record
*blr
, NTSTATUS status
)
265 char *inbuf
= blr
->inbuf
;
266 files_struct
*fsp
= blr
->fsp
;
267 uint16 num_ulocks
= SVAL(inbuf
,smb_vwv6
);
268 SMB_BIG_UINT count
= (SMB_BIG_UINT
)0, offset
= (SMB_BIG_UINT
) 0;
270 unsigned char locktype
= CVAL(inbuf
,smb_vwv3
);
271 BOOL large_file_format
= (locktype
& LOCKING_ANDX_LARGE_FILES
);
275 data
= smb_buf(inbuf
) + ((large_file_format
? 20 : 10)*num_ulocks
);
278 * Data now points at the beginning of the list
279 * of smb_lkrng structs.
283 * Ensure we don't do a remove on the lock that just failed,
284 * as under POSIX rules, if we have a lock already there, we
285 * will delete it (and we shouldn't) .....
288 for(i
= blr
->lock_num
- 1; i
>= 0; i
--) {
291 lock_pid
= get_lock_pid( data
, i
, large_file_format
);
292 count
= get_lock_count( data
, i
, large_file_format
);
293 offset
= get_lock_offset( data
, i
, large_file_format
, &err
);
296 * We know err cannot be set as if it was the lock
297 * request would never have been queued. JRA.
307 generic_blocking_lock_error(blr
, status
);
310 /****************************************************************************
311 Return a lock fail error.
312 *****************************************************************************/
314 static void blocking_lock_reply_error(blocking_lock_record
*blr
, NTSTATUS status
)
316 switch(blr
->com_type
) {
318 reply_lockingX_error(blr
, status
);
323 char *outbuf
= get_OutBuffer();
324 char *inbuf
= blr
->inbuf
;
325 construct_reply_common(inbuf
, outbuf
);
326 /* construct_reply_common has done us the favor to pre-fill the
327 * command field with SMBtranss2 which is wrong :-)
329 SCVAL(outbuf
,smb_com
,SMBtrans2
);
331 if (!send_smb(smbd_server_fd(),outbuf
)) {
332 exit_server_cleanly("blocking_lock_reply_error: send_smb failed.");
337 DEBUG(0,("blocking_lock_reply_error: PANIC - unknown type on blocking lock queue - exiting.!\n"));
338 exit_server("PANIC - unknown type on blocking lock queue");
342 /****************************************************************************
343 Attempt to finish off getting all pending blocking locks for a lockingX call.
344 Returns True if we want to be removed from the list.
345 *****************************************************************************/
347 static BOOL
process_lockingX(blocking_lock_record
*blr
)
349 char *inbuf
= blr
->inbuf
;
350 unsigned char locktype
= CVAL(inbuf
,smb_vwv3
);
351 files_struct
*fsp
= blr
->fsp
;
352 uint16 num_ulocks
= SVAL(inbuf
,smb_vwv6
);
353 uint16 num_locks
= SVAL(inbuf
,smb_vwv7
);
354 SMB_BIG_UINT count
= (SMB_BIG_UINT
)0, offset
= (SMB_BIG_UINT
)0;
356 BOOL large_file_format
= (locktype
& LOCKING_ANDX_LARGE_FILES
);
358 NTSTATUS status
= NT_STATUS_OK
;
360 data
= smb_buf(inbuf
) + ((large_file_format
? 20 : 10)*num_ulocks
);
363 * Data now points at the beginning of the list
364 * of smb_lkrng structs.
367 for(; blr
->lock_num
< num_locks
; blr
->lock_num
++) {
368 struct byte_range_lock
*br_lck
= NULL
;
371 lock_pid
= get_lock_pid( data
, blr
->lock_num
, large_file_format
);
372 count
= get_lock_count( data
, blr
->lock_num
, large_file_format
);
373 offset
= get_lock_offset( data
, blr
->lock_num
, large_file_format
, &err
);
376 * We know err cannot be set as if it was the lock
377 * request would never have been queued. JRA.
380 br_lck
= do_lock(fsp
,
384 ((locktype
& LOCKING_ANDX_SHARED_LOCK
) ?
385 READ_LOCK
: WRITE_LOCK
),
393 if (NT_STATUS_IS_ERR(status
)) {
398 if(blr
->lock_num
== num_locks
) {
400 * Success - we got all the locks.
403 DEBUG(3,("process_lockingX file = %s, fnum=%d type=%d num_locks=%d\n",
404 fsp
->fsp_name
, fsp
->fnum
, (unsigned int)locktype
, num_locks
) );
406 reply_lockingX_success(blr
);
408 } else if (!NT_STATUS_EQUAL(status
,NT_STATUS_LOCK_NOT_GRANTED
) &&
409 !NT_STATUS_EQUAL(status
,NT_STATUS_FILE_LOCK_CONFLICT
)) {
411 * We have other than a "can't get lock"
412 * error. Free any locks we had and return an error.
413 * Return True so we get dequeued.
416 blocking_lock_reply_error(blr
, status
);
421 * Still can't get all the locks - keep waiting.
424 DEBUG(10,("process_lockingX: only got %d locks of %d needed for file %s, fnum = %d. \
426 blr
->lock_num
, num_locks
, fsp
->fsp_name
, fsp
->fnum
));
431 /****************************************************************************
432 Attempt to get the posix lock request from a SMBtrans2 call.
433 Returns True if we want to be removed from the list.
434 *****************************************************************************/
436 static BOOL
process_trans2(blocking_lock_record
*blr
)
438 char *inbuf
= blr
->inbuf
;
442 struct byte_range_lock
*br_lck
= do_lock(blr
->fsp
,
453 if (!NT_STATUS_IS_OK(status
)) {
454 if (ERROR_WAS_LOCK_DENIED(status
)) {
455 /* Still can't get the lock, just keep waiting. */
459 * We have other than a "can't get lock"
460 * error. Send an error and return True so we get dequeued.
462 blocking_lock_reply_error(blr
, status
);
466 /* We finally got the lock, return success. */
467 outbuf
= get_OutBuffer();
468 construct_reply_common(inbuf
, outbuf
);
469 SCVAL(outbuf
,smb_com
,SMBtrans2
);
471 /* Fake up max_data_bytes here - we know it fits. */
472 send_trans2_replies(outbuf
, max_send
, params
, 2, NULL
, 0, 0xffff);
477 /****************************************************************************
478 Process a blocking lock SMB.
479 Returns True if we want to be removed from the list.
480 *****************************************************************************/
482 static BOOL
blocking_lock_record_process(blocking_lock_record
*blr
)
484 switch(blr
->com_type
) {
486 return process_lockingX(blr
);
489 return process_trans2(blr
);
491 DEBUG(0,("blocking_lock_record_process: PANIC - unknown type on blocking lock queue - exiting.!\n"));
492 exit_server("PANIC - unknown type on blocking lock queue");
494 return False
; /* Keep compiler happy. */
497 /****************************************************************************
498 Cancel entries by fnum from the blocking lock pending queue.
499 *****************************************************************************/
501 void cancel_pending_lock_requests_by_fid(files_struct
*fsp
, struct byte_range_lock
*br_lck
)
503 blocking_lock_record
*blr
, *next
= NULL
;
505 for(blr
= blocking_lock_queue
; blr
; blr
= next
) {
507 if(blr
->fsp
->fnum
== fsp
->fnum
) {
508 unsigned char locktype
= 0;
510 if (blr
->com_type
== SMBlockingX
) {
511 locktype
= CVAL(blr
->inbuf
,smb_vwv3
);
515 DEBUG(10,("remove_pending_lock_requests_by_fid - removing request type %d for \
516 file %s fnum = %d\n", blr
->com_type
, fsp
->fsp_name
, fsp
->fnum
));
518 brl_lock_cancel(br_lck
,
525 blocking_lock_cancel(fsp
,
531 NT_STATUS_RANGE_NOT_LOCKED
);
537 /****************************************************************************
538 Delete entries by mid from the blocking lock pending queue. Always send reply.
539 *****************************************************************************/
541 void remove_pending_lock_requests_by_mid(int mid
)
543 blocking_lock_record
*blr
, *next
= NULL
;
545 for(blr
= blocking_lock_queue
; blr
; blr
= next
) {
547 if(SVAL(blr
->inbuf
,smb_mid
) == mid
) {
548 files_struct
*fsp
= blr
->fsp
;
549 struct byte_range_lock
*br_lck
= brl_get_locks(NULL
, fsp
);
552 DEBUG(10,("remove_pending_lock_requests_by_mid - removing request type %d for \
553 file %s fnum = %d\n", blr
->com_type
, fsp
->fsp_name
, fsp
->fnum
));
555 brl_lock_cancel(br_lck
,
564 blocking_lock_reply_error(blr
,NT_STATUS_FILE_LOCK_CONFLICT
);
565 DLIST_REMOVE(blocking_lock_queue
, blr
);
566 free_blocking_lock_record(blr
);
571 /****************************************************************************
572 Is this mid a blocking lock request on the queue ?
573 *****************************************************************************/
575 BOOL
blocking_lock_was_deferred(int mid
)
577 blocking_lock_record
*blr
, *next
= NULL
;
579 for(blr
= blocking_lock_queue
; blr
; blr
= next
) {
581 if(SVAL(blr
->inbuf
,smb_mid
) == mid
) {
588 /****************************************************************************
589 Set a flag as an unlock request affects one of our pending locks.
590 *****************************************************************************/
592 static void received_unlock_msg(int msg_type
, struct process_id src
,
593 void *buf
, size_t len
,
596 DEBUG(10,("received_unlock_msg\n"));
597 process_blocking_lock_queue();
600 /****************************************************************************
601 Return the number of milliseconds to the next blocking locks timeout, or default_timeout
602 *****************************************************************************/
604 unsigned int blocking_locks_timeout_ms(unsigned int default_timeout_ms
)
606 unsigned int timeout_ms
= default_timeout_ms
;
607 struct timeval tv_curr
;
608 SMB_BIG_INT min_tv_dif_us
= default_timeout_ms
* 1000;
609 blocking_lock_record
*blr
= blocking_lock_queue
;
611 /* note that we avoid the GetTimeOfDay() syscall if there are no blocking locks */
616 tv_curr
= timeval_current();
618 for (; blr
; blr
= blr
->next
) {
619 SMB_BIG_INT tv_dif_us
;
621 if (timeval_is_zero(&blr
->expire_time
)) {
623 * If we're blocked on pid 0xFFFFFFFF this is
624 * a POSIX lock, so calculate a timeout of
627 if (blr
->blocking_pid
== 0xFFFFFFFF) {
628 tv_dif_us
= 10 * 1000 * 1000;
629 min_tv_dif_us
= MIN(min_tv_dif_us
, tv_dif_us
);
631 continue; /* Never timeout. */
634 tv_dif_us
= usec_time_diff(&blr
->expire_time
, &tv_curr
);
635 min_tv_dif_us
= MIN(min_tv_dif_us
, tv_dif_us
);
638 if (min_tv_dif_us
< 0) {
642 timeout_ms
= (unsigned int)(min_tv_dif_us
/ (SMB_BIG_INT
)1000);
644 if (timeout_ms
< 1) {
648 DEBUG(10,("blocking_locks_timeout_ms: returning %u\n", timeout_ms
));
653 /****************************************************************************
654 Process the blocking lock queue. Note that this is only called as root.
655 *****************************************************************************/
657 void process_blocking_lock_queue(void)
659 struct timeval tv_curr
= timeval_current();
660 blocking_lock_record
*blr
, *next
= NULL
;
663 * Go through the queue and see if we can get any of the locks.
666 for (blr
= blocking_lock_queue
; blr
; blr
= next
) {
667 connection_struct
*conn
= NULL
;
669 files_struct
*fsp
= NULL
;
674 * Ensure we don't have any old chain_fsp values
681 conn
= conn_find(SVAL(blr
->inbuf
,smb_tid
));
682 vuid
= (lp_security() == SEC_SHARE
) ? UID_FIELD_INVALID
:
683 SVAL(blr
->inbuf
,smb_uid
);
685 DEBUG(5,("process_blocking_lock_queue: examining pending lock fnum = %d for file %s\n",
686 fsp
->fnum
, fsp
->fsp_name
));
688 if(!change_to_user(conn
,vuid
)) {
689 struct byte_range_lock
*br_lck
= brl_get_locks(NULL
, fsp
);
692 * Remove the entry and return an error to the client.
696 brl_lock_cancel(br_lck
,
705 DEBUG(0,("process_blocking_lock_queue: Unable to become user vuid=%d.\n",
707 blocking_lock_reply_error(blr
,NT_STATUS_ACCESS_DENIED
);
708 DLIST_REMOVE(blocking_lock_queue
, blr
);
709 free_blocking_lock_record(blr
);
713 if(!set_current_service(conn
,SVAL(blr
->inbuf
,smb_flg
),True
)) {
714 struct byte_range_lock
*br_lck
= brl_get_locks(NULL
, fsp
);
717 * Remove the entry and return an error to the client.
721 brl_lock_cancel(br_lck
,
730 DEBUG(0,("process_blocking_lock_queue: Unable to become service Error was %s.\n", strerror(errno
) ));
731 blocking_lock_reply_error(blr
,NT_STATUS_ACCESS_DENIED
);
732 DLIST_REMOVE(blocking_lock_queue
, blr
);
733 free_blocking_lock_record(blr
);
734 change_to_root_user();
739 * Go through the remaining locks and try and obtain them.
740 * The call returns True if all locks were obtained successfully
741 * and False if we still need to wait.
744 if(blocking_lock_record_process(blr
)) {
745 struct byte_range_lock
*br_lck
= brl_get_locks(NULL
, fsp
);
748 brl_lock_cancel(br_lck
,
757 DLIST_REMOVE(blocking_lock_queue
, blr
);
758 free_blocking_lock_record(blr
);
759 change_to_root_user();
763 change_to_root_user();
766 * We couldn't get the locks for this record on the list.
767 * If the time has expired, return a lock error.
770 if (!timeval_is_zero(&blr
->expire_time
) && timeval_compare(&blr
->expire_time
, &tv_curr
) <= 0) {
771 struct byte_range_lock
*br_lck
= brl_get_locks(NULL
, fsp
);
774 * Lock expired - throw away all previously
775 * obtained locks and return lock error.
779 DEBUG(5,("process_blocking_lock_queue: pending lock fnum = %d for file %s timed out.\n",
780 fsp
->fnum
, fsp
->fsp_name
));
782 brl_lock_cancel(br_lck
,
791 blocking_lock_reply_error(blr
,NT_STATUS_FILE_LOCK_CONFLICT
);
792 DLIST_REMOVE(blocking_lock_queue
, blr
);
793 free_blocking_lock_record(blr
);
800 /****************************************************************************
801 Handle a cancel message. Lock already moved onto the cancel queue.
802 *****************************************************************************/
804 #define MSG_BLOCKING_LOCK_CANCEL_SIZE (sizeof(blocking_lock_record *) + sizeof(NTSTATUS))
806 static void process_blocking_lock_cancel_message(int msg_type
,
807 struct process_id src
,
808 void *buf
, size_t len
,
812 const char *msg
= (const char *)buf
;
813 blocking_lock_record
*blr
;
816 smb_panic("process_blocking_lock_cancel_message: null msg\n");
819 if (len
!= MSG_BLOCKING_LOCK_CANCEL_SIZE
) {
820 DEBUG(0, ("process_blocking_lock_cancel_message: "
821 "Got invalid msg len %d\n", (int)len
));
822 smb_panic("process_blocking_lock_cancel_message: bad msg\n");
825 memcpy(&blr
, msg
, sizeof(blr
));
826 memcpy(&err
, &msg
[sizeof(blr
)], sizeof(NTSTATUS
));
828 DEBUG(10,("process_blocking_lock_cancel_message: returning error %s\n",
831 blocking_lock_reply_error(blr
, err
);
832 DLIST_REMOVE(blocking_lock_cancelled_queue
, blr
);
833 free_blocking_lock_record(blr
);
836 /****************************************************************************
837 Send ourselves a blocking lock cancelled message. Handled asynchronously above.
838 *****************************************************************************/
840 BOOL
blocking_lock_cancel(files_struct
*fsp
,
844 enum brl_flavour lock_flav
,
845 unsigned char locktype
,
848 static BOOL initialized
;
849 char msg
[MSG_BLOCKING_LOCK_CANCEL_SIZE
];
850 blocking_lock_record
*blr
;
853 /* Register our message. */
854 message_register(MSG_SMB_BLOCKING_LOCK_CANCEL
,
855 process_blocking_lock_cancel_message
,
861 for (blr
= blocking_lock_queue
; blr
; blr
= blr
->next
) {
862 if (fsp
== blr
->fsp
&&
863 lock_pid
== blr
->lock_pid
&&
864 offset
== blr
->offset
&&
865 count
== blr
->count
&&
866 lock_flav
== blr
->lock_flav
) {
875 /* Check the flags are right. */
876 if (blr
->com_type
== SMBlockingX
&&
877 (locktype
& LOCKING_ANDX_LARGE_FILES
) !=
878 (CVAL(blr
->inbuf
,smb_vwv3
) & LOCKING_ANDX_LARGE_FILES
)) {
882 /* Move to cancelled queue. */
883 DLIST_REMOVE(blocking_lock_queue
, blr
);
884 DLIST_ADD(blocking_lock_cancelled_queue
, blr
);
886 /* Create the message. */
887 memcpy(msg
, &blr
, sizeof(blr
));
888 memcpy(&msg
[sizeof(blr
)], &err
, sizeof(NTSTATUS
));
890 message_send_pid(pid_to_procid(sys_getpid()),
891 MSG_SMB_BLOCKING_LOCK_CANCEL
,
892 &msg
, sizeof(msg
), True
);