2 Unix SMB/CIFS implementation.
5 Copyright (C) Stefan Metzmacher 2009
6 Copyright (C) Jeremy Allison 2010
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>.
23 #include "smbd/smbd.h"
24 #include "smbd/globals.h"
25 #include "../libcli/smb/smb_common.h"
26 #include "../lib/util/tevent_ntstatus.h"
29 struct smbd_smb2_lock_element
{
35 struct smbd_smb2_lock_state
{
36 struct smbd_smb2_request
*smb2req
;
37 struct smb_request
*smb1req
;
38 struct blocking_lock_record
*blr
;
40 struct smbd_lock_element
*locks
;
43 static void remove_pending_lock(struct smbd_smb2_lock_state
*state
,
44 struct blocking_lock_record
*blr
);
46 static struct tevent_req
*smbd_smb2_lock_send(TALLOC_CTX
*mem_ctx
,
47 struct tevent_context
*ev
,
48 struct smbd_smb2_request
*smb2req
,
49 struct files_struct
*in_fsp
,
50 uint16_t in_lock_count
,
51 struct smbd_smb2_lock_element
*in_locks
);
52 static NTSTATUS
smbd_smb2_lock_recv(struct tevent_req
*req
);
54 static void smbd_smb2_request_lock_done(struct tevent_req
*subreq
);
55 NTSTATUS
smbd_smb2_request_process_lock(struct smbd_smb2_request
*req
)
57 const uint8_t *inbody
;
58 uint16_t in_lock_count
;
59 uint64_t in_file_id_persistent
;
60 uint64_t in_file_id_volatile
;
61 struct files_struct
*in_fsp
;
62 struct smbd_smb2_lock_element
*in_locks
;
63 struct tevent_req
*subreq
;
64 const uint8_t *lock_buffer
;
68 status
= smbd_smb2_request_verify_sizes(req
, 0x30);
69 if (!NT_STATUS_IS_OK(status
)) {
70 return smbd_smb2_request_error(req
, status
);
72 inbody
= SMBD_SMB2_IN_BODY_PTR(req
);
74 in_lock_count
= CVAL(inbody
, 0x02);
75 /* 0x04 - 4 bytes reserved */
76 in_file_id_persistent
= BVAL(inbody
, 0x08);
77 in_file_id_volatile
= BVAL(inbody
, 0x10);
79 if (in_lock_count
< 1) {
80 return smbd_smb2_request_error(req
, NT_STATUS_INVALID_PARAMETER
);
83 if (((in_lock_count
- 1) * 0x18) > SMBD_SMB2_IN_DYN_LEN(req
)) {
84 return smbd_smb2_request_error(req
, NT_STATUS_INVALID_PARAMETER
);
87 in_locks
= talloc_array(req
, struct smbd_smb2_lock_element
,
89 if (in_locks
== NULL
) {
90 return smbd_smb2_request_error(req
, NT_STATUS_NO_MEMORY
);
94 lock_buffer
= inbody
+ 0x18;
96 in_locks
[l
].offset
= BVAL(lock_buffer
, 0x00);
97 in_locks
[l
].length
= BVAL(lock_buffer
, 0x08);
98 in_locks
[l
].flags
= IVAL(lock_buffer
, 0x10);
99 /* 0x14 - 4 reserved bytes */
101 lock_buffer
= SMBD_SMB2_IN_DYN_PTR(req
);
103 for (l
=1; l
< in_lock_count
; l
++) {
104 in_locks
[l
].offset
= BVAL(lock_buffer
, 0x00);
105 in_locks
[l
].length
= BVAL(lock_buffer
, 0x08);
106 in_locks
[l
].flags
= IVAL(lock_buffer
, 0x10);
107 /* 0x14 - 4 reserved bytes */
112 in_fsp
= file_fsp_smb2(req
, in_file_id_persistent
, in_file_id_volatile
);
113 if (in_fsp
== NULL
) {
114 return smbd_smb2_request_error(req
, NT_STATUS_FILE_CLOSED
);
117 subreq
= smbd_smb2_lock_send(req
, req
->sconn
->ev_ctx
,
121 if (subreq
== NULL
) {
122 return smbd_smb2_request_error(req
, NT_STATUS_NO_MEMORY
);
124 tevent_req_set_callback(subreq
, smbd_smb2_request_lock_done
, req
);
126 return smbd_smb2_request_pending_queue(req
, subreq
, 500);
129 static void smbd_smb2_request_lock_done(struct tevent_req
*subreq
)
131 struct smbd_smb2_request
*smb2req
= tevent_req_callback_data(subreq
,
132 struct smbd_smb2_request
);
135 NTSTATUS error
; /* transport error */
137 if (smb2req
->cancelled
) {
138 const uint8_t *inhdr
= SMBD_SMB2_IN_HDR_PTR(smb2req
);
139 uint64_t mid
= BVAL(inhdr
, SMB2_HDR_MESSAGE_ID
);
140 struct smbd_smb2_lock_state
*state
;
142 DEBUG(10,("smbd_smb2_request_lock_done: cancelled mid %llu\n",
143 (unsigned long long)mid
));
145 state
= tevent_req_data(smb2req
->subreq
,
146 struct smbd_smb2_lock_state
);
149 SMB_ASSERT(state
->blr
);
151 remove_pending_lock(state
, state
->blr
);
153 error
= smbd_smb2_request_error(smb2req
, NT_STATUS_CANCELLED
);
154 if (!NT_STATUS_IS_OK(error
)) {
155 smbd_server_connection_terminate(smb2req
->sconn
,
162 status
= smbd_smb2_lock_recv(subreq
);
164 if (!NT_STATUS_IS_OK(status
)) {
165 error
= smbd_smb2_request_error(smb2req
, status
);
166 if (!NT_STATUS_IS_OK(error
)) {
167 smbd_server_connection_terminate(smb2req
->sconn
,
174 outbody
= data_blob_talloc(smb2req
->out
.vector
, NULL
, 0x04);
175 if (outbody
.data
== NULL
) {
176 error
= smbd_smb2_request_error(smb2req
, NT_STATUS_NO_MEMORY
);
177 if (!NT_STATUS_IS_OK(error
)) {
178 smbd_server_connection_terminate(smb2req
->sconn
,
185 SSVAL(outbody
.data
, 0x00, 0x04); /* struct size */
186 SSVAL(outbody
.data
, 0x02, 0); /* reserved */
188 error
= smbd_smb2_request_done(smb2req
, outbody
, NULL
);
189 if (!NT_STATUS_IS_OK(error
)) {
190 smbd_server_connection_terminate(smb2req
->sconn
,
196 static struct tevent_req
*smbd_smb2_lock_send(TALLOC_CTX
*mem_ctx
,
197 struct tevent_context
*ev
,
198 struct smbd_smb2_request
*smb2req
,
199 struct files_struct
*fsp
,
200 uint16_t in_lock_count
,
201 struct smbd_smb2_lock_element
*in_locks
)
203 struct tevent_req
*req
;
204 struct smbd_smb2_lock_state
*state
;
205 struct smb_request
*smb1req
;
206 int32_t timeout
= -1;
207 bool isunlock
= false;
209 struct smbd_lock_element
*locks
;
213 req
= tevent_req_create(mem_ctx
, &state
,
214 struct smbd_smb2_lock_state
);
218 state
->smb2req
= smb2req
;
219 smb2req
->subreq
= req
; /* So we can find this when going async. */
221 smb1req
= smbd_smb2_fake_smb_request(smb2req
);
222 if (tevent_req_nomem(smb1req
, req
)) {
223 return tevent_req_post(req
, ev
);
225 state
->smb1req
= smb1req
;
227 DEBUG(10,("smbd_smb2_lock_send: %s - %s\n",
228 fsp_str_dbg(fsp
), fsp_fnum_dbg(fsp
)));
230 locks
= talloc_array(state
, struct smbd_lock_element
, in_lock_count
);
232 tevent_req_nterror(req
, NT_STATUS_NO_MEMORY
);
233 return tevent_req_post(req
, ev
);
236 switch (in_locks
[0].flags
) {
237 case SMB2_LOCK_FLAG_SHARED
:
238 case SMB2_LOCK_FLAG_EXCLUSIVE
:
239 if (in_lock_count
> 1) {
240 tevent_req_nterror(req
, NT_STATUS_INVALID_PARAMETER
);
241 return tevent_req_post(req
, ev
);
246 case SMB2_LOCK_FLAG_SHARED
|SMB2_LOCK_FLAG_FAIL_IMMEDIATELY
:
247 case SMB2_LOCK_FLAG_EXCLUSIVE
|SMB2_LOCK_FLAG_FAIL_IMMEDIATELY
:
251 case SMB2_LOCK_FLAG_UNLOCK
:
252 /* only the first lock gives the UNLOCK bit - see
259 tevent_req_nterror(req
, NT_STATUS_INVALID_PARAMETER
);
260 return tevent_req_post(req
, ev
);
263 for (i
=0; i
<in_lock_count
; i
++) {
264 bool invalid
= false;
266 switch (in_locks
[i
].flags
) {
267 case SMB2_LOCK_FLAG_SHARED
:
268 case SMB2_LOCK_FLAG_EXCLUSIVE
:
274 tevent_req_nterror(req
,
275 NT_STATUS_INVALID_PARAMETER
);
276 return tevent_req_post(req
, ev
);
280 case SMB2_LOCK_FLAG_SHARED
|SMB2_LOCK_FLAG_FAIL_IMMEDIATELY
:
281 case SMB2_LOCK_FLAG_EXCLUSIVE
|SMB2_LOCK_FLAG_FAIL_IMMEDIATELY
:
287 case SMB2_LOCK_FLAG_UNLOCK
:
289 tevent_req_nterror(req
,
290 NT_STATUS_INVALID_PARAMETER
);
291 return tevent_req_post(req
, ev
);
298 * is the first element was a UNLOCK
299 * we need to deferr the error response
300 * to the backend, because we need to process
301 * all unlock elements before
306 tevent_req_nterror(req
, NT_STATUS_INVALID_PARAMETER
);
307 return tevent_req_post(req
, ev
);
310 locks
[i
].smblctx
= fsp
->op
->global
->open_persistent_id
;
311 locks
[i
].offset
= in_locks
[i
].offset
;
312 locks
[i
].count
= in_locks
[i
].length
;
314 if (in_locks
[i
].flags
& SMB2_LOCK_FLAG_EXCLUSIVE
) {
315 locks
[i
].brltype
= WRITE_LOCK
;
316 } else if (in_locks
[i
].flags
& SMB2_LOCK_FLAG_SHARED
) {
317 locks
[i
].brltype
= READ_LOCK
;
318 } else if (invalid
) {
320 * this is an invalid UNLOCK element
321 * and the backend needs to test for
322 * brltype != UNLOCK_LOCK and return
323 * NT_STATUS_INVALID_PARAMER
325 locks
[i
].brltype
= READ_LOCK
;
327 locks
[i
].brltype
= UNLOCK_LOCK
;
330 DEBUG(10,("smbd_smb2_lock_send: index %d offset=%llu, count=%llu, "
331 "smblctx = %llu type %d\n",
333 (unsigned long long)locks
[i
].offset
,
334 (unsigned long long)locks
[i
].count
,
335 (unsigned long long)locks
[i
].smblctx
,
336 (int)locks
[i
].brltype
));
339 state
->locks
= locks
;
340 state
->lock_count
= in_lock_count
;
343 status
= smbd_do_locking(smb1req
, fsp
,
352 status
= smbd_do_locking(smb1req
, fsp
,
361 if (!NT_STATUS_IS_OK(status
)) {
362 if (NT_STATUS_EQUAL(status
, NT_STATUS_FILE_LOCK_CONFLICT
)) {
363 status
= NT_STATUS_LOCK_NOT_GRANTED
;
365 tevent_req_nterror(req
, status
);
366 return tevent_req_post(req
, ev
);
373 tevent_req_done(req
);
374 return tevent_req_post(req
, ev
);
377 static NTSTATUS
smbd_smb2_lock_recv(struct tevent_req
*req
)
381 if (tevent_req_is_nterror(req
, &status
)) {
382 tevent_req_received(req
);
386 tevent_req_received(req
);
390 /****************************************************************
391 Cancel an outstanding blocking lock request.
392 *****************************************************************/
394 static bool smbd_smb2_lock_cancel(struct tevent_req
*req
)
396 struct smbd_smb2_request
*smb2req
= NULL
;
397 struct smbd_smb2_lock_state
*state
= tevent_req_data(req
,
398 struct smbd_smb2_lock_state
);
403 if (!state
->smb2req
) {
407 smb2req
= state
->smb2req
;
408 smb2req
->cancelled
= true;
410 tevent_req_done(req
);
414 /****************************************************************
415 Got a message saying someone unlocked a file. Re-schedule all
416 blocking lock requests as we don't know if anything overlapped.
417 *****************************************************************/
419 static void received_unlock_msg(struct messaging_context
*msg
,
422 struct server_id server_id
,
425 struct smbd_server_connection
*sconn
=
426 talloc_get_type_abort(private_data
,
427 struct smbd_server_connection
);
429 DEBUG(10,("received_unlock_msg (SMB2)\n"));
431 process_blocking_lock_queue_smb2(sconn
, timeval_current());
434 /****************************************************************
435 Function to get the blr on a pending record.
436 *****************************************************************/
438 struct blocking_lock_record
*get_pending_smb2req_blr(struct smbd_smb2_request
*smb2req
)
440 struct smbd_smb2_lock_state
*state
= NULL
;
441 const uint8_t *inhdr
;
446 if (smb2req
->subreq
== NULL
) {
449 if (!tevent_req_is_in_progress(smb2req
->subreq
)) {
452 inhdr
= SMBD_SMB2_IN_HDR_PTR(smb2req
);
453 if (SVAL(inhdr
, SMB2_HDR_OPCODE
) != SMB2_OP_LOCK
) {
456 state
= tevent_req_data(smb2req
->subreq
,
457 struct smbd_smb2_lock_state
);
463 /****************************************************************
464 Set up the next brl timeout.
465 *****************************************************************/
467 static bool recalc_smb2_brl_timeout(struct smbd_server_connection
*sconn
)
469 struct smbd_smb2_request
*smb2req
;
470 struct timeval next_timeout
= timeval_zero();
471 int max_brl_timeout
= lp_parm_int(-1, "brl", "recalctime", 5);
473 TALLOC_FREE(sconn
->smb2
.locks
.brl_timeout
);
475 for (smb2req
= sconn
->smb2
.requests
; smb2req
; smb2req
= smb2req
->next
) {
476 struct blocking_lock_record
*blr
=
477 get_pending_smb2req_blr(smb2req
);
481 if (timeval_is_zero(&blr
->expire_time
)) {
483 * If we're blocked on pid 0xFFFFFFFFFFFFFFFFLL this is
484 * a POSIX lock, so calculate a timeout of
485 * 10 seconds into the future.
487 if (blr
->blocking_smblctx
== 0xFFFFFFFFFFFFFFFFLL
) {
488 struct timeval psx_to
= timeval_current_ofs(10, 0);
489 next_timeout
= timeval_brl_min(&next_timeout
, &psx_to
);
495 next_timeout
= timeval_brl_min(&next_timeout
, &blr
->expire_time
);
498 if (timeval_is_zero(&next_timeout
)) {
499 DEBUG(10, ("recalc_smb2_brl_timeout:Next "
500 "timeout = Infinite.\n"));
505 * To account for unclean shutdowns by clients we need a
506 * maximum timeout that we use for checking pending locks. If
507 * we have any pending locks at all, then check if the pending
508 * lock can continue at least every brl:recalctime seconds
509 * (default 5 seconds).
511 * This saves us needing to do a message_send_all() in the
512 * SIGCHLD handler in the parent daemon. That
513 * message_send_all() caused O(n^2) work to be done when IP
514 * failovers happened in clustered Samba, which could make the
515 * entire system unusable for many minutes.
518 if (max_brl_timeout
> 0) {
519 struct timeval min_to
= timeval_current_ofs(max_brl_timeout
, 0);
520 next_timeout
= timeval_brl_min(&next_timeout
, &min_to
);
524 struct timeval cur
, from_now
;
526 cur
= timeval_current();
527 from_now
= timeval_until(&cur
, &next_timeout
);
528 DEBUG(10, ("recalc_smb2_brl_timeout: Next "
529 "timeout = %d.%d seconds from now.\n",
530 (int)from_now
.tv_sec
, (int)from_now
.tv_usec
));
533 sconn
->smb2
.locks
.brl_timeout
= tevent_add_timer(
539 if (!sconn
->smb2
.locks
.brl_timeout
) {
545 /****************************************************************
546 Get an SMB2 lock reqeust to go async. lock_timeout should
548 *****************************************************************/
550 bool push_blocking_lock_request_smb2( struct byte_range_lock
*br_lck
,
551 struct smb_request
*smb1req
,
556 enum brl_type lock_type
,
557 enum brl_flavour lock_flav
,
560 uint64_t blocking_smblctx
)
562 struct smbd_server_connection
*sconn
= smb1req
->sconn
;
563 struct smbd_smb2_request
*smb2req
= smb1req
->smb2req
;
564 struct tevent_req
*req
= NULL
;
565 struct smbd_smb2_lock_state
*state
= NULL
;
566 struct blocking_lock_record
*blr
= NULL
;
567 NTSTATUS status
= NT_STATUS_OK
;
572 req
= smb2req
->subreq
;
576 if (!tevent_req_is_in_progress(smb2req
->subreq
)) {
579 state
= tevent_req_data(req
, struct smbd_smb2_lock_state
);
584 blr
= talloc_zero(state
, struct blocking_lock_record
);
590 if (lock_timeout
== -1) {
591 blr
->expire_time
.tv_sec
= 0;
592 blr
->expire_time
.tv_usec
= 0; /* Never expire. */
594 blr
->expire_time
= timeval_current_ofs_msec(lock_timeout
);
597 blr
->lock_num
= lock_num
;
598 blr
->smblctx
= smblctx
;
599 blr
->blocking_smblctx
= blocking_smblctx
;
600 blr
->lock_flav
= lock_flav
;
601 blr
->lock_type
= lock_type
;
602 blr
->offset
= offset
;
605 /* Specific brl_lock() implementations can fill this in. */
606 blr
->blr_private
= NULL
;
608 /* Add a pending lock record for this. */
609 status
= brl_lock(sconn
->msg_ctx
,
612 messaging_server_id(sconn
->msg_ctx
),
615 lock_type
== READ_LOCK
? PENDING_READ_LOCK
: PENDING_WRITE_LOCK
,
621 if (!NT_STATUS_IS_OK(status
)) {
622 DEBUG(0,("push_blocking_lock_request_smb2: "
623 "failed to add PENDING_LOCK record.\n"));
629 DEBUG(10,("push_blocking_lock_request_smb2: file %s timeout %d\n",
633 recalc_smb2_brl_timeout(sconn
);
635 /* Ensure we'll receive messages when this is unlocked. */
636 if (!sconn
->smb2
.locks
.blocking_lock_unlock_state
) {
637 messaging_register(sconn
->msg_ctx
, sconn
,
638 MSG_SMB_UNLOCK
, received_unlock_msg
);
639 sconn
->smb2
.locks
.blocking_lock_unlock_state
= true;
642 /* allow this request to be canceled */
643 tevent_req_set_cancel_fn(req
, smbd_smb2_lock_cancel
);
648 /****************************************************************
649 Remove a pending lock record under lock.
650 *****************************************************************/
652 static void remove_pending_lock(struct smbd_smb2_lock_state
*state
,
653 struct blocking_lock_record
*blr
)
656 struct byte_range_lock
*br_lck
= brl_get_locks(
659 DEBUG(10, ("remove_pending_lock: BLR = %p\n", blr
));
662 brl_lock_cancel(br_lck
,
664 messaging_server_id(blr
->fsp
->conn
->sconn
->msg_ctx
),
672 /* Remove the locks we already got. */
674 for(i
= blr
->lock_num
- 1; i
>= 0; i
--) {
675 struct smbd_lock_element
*e
= &state
->locks
[i
];
677 do_unlock(blr
->fsp
->conn
->sconn
->msg_ctx
,
686 /****************************************************************
687 Re-proccess a blocking lock request.
688 This is equivalent to process_lockingX() inside smbd/blocking.c
689 *****************************************************************/
691 static void reprocess_blocked_smb2_lock(struct smbd_smb2_request
*smb2req
,
692 struct timeval tv_curr
)
694 NTSTATUS status
= NT_STATUS_UNSUCCESSFUL
;
695 struct blocking_lock_record
*blr
= NULL
;
696 struct smbd_smb2_lock_state
*state
= NULL
;
697 files_struct
*fsp
= NULL
;
699 if (!smb2req
->subreq
) {
702 state
= tevent_req_data(smb2req
->subreq
, struct smbd_smb2_lock_state
);
710 /* Try and finish off getting all the outstanding locks. */
712 for (; blr
->lock_num
< state
->lock_count
; blr
->lock_num
++) {
713 struct byte_range_lock
*br_lck
= NULL
;
714 struct smbd_lock_element
*e
= &state
->locks
[blr
->lock_num
];
716 br_lck
= do_lock(fsp
->conn
->sconn
->msg_ctx
,
725 &blr
->blocking_smblctx
,
730 if (NT_STATUS_IS_ERR(status
)) {
735 if(blr
->lock_num
== state
->lock_count
) {
737 * Success - we got all the locks.
740 DEBUG(3,("reprocess_blocked_smb2_lock SUCCESS file = %s, "
741 "%s, num_locks=%d\n",
744 (int)state
->lock_count
));
746 tevent_req_done(smb2req
->subreq
);
750 if (!NT_STATUS_EQUAL(status
,NT_STATUS_LOCK_NOT_GRANTED
) &&
751 !NT_STATUS_EQUAL(status
,NT_STATUS_FILE_LOCK_CONFLICT
)) {
753 * We have other than a "can't get lock"
754 * error. Return an error.
756 remove_pending_lock(state
, blr
);
757 tevent_req_nterror(smb2req
->subreq
, status
);
762 * We couldn't get the locks for this record on the list.
763 * If the time has expired, return a lock error.
766 if (!timeval_is_zero(&blr
->expire_time
) &&
767 timeval_compare(&blr
->expire_time
, &tv_curr
) <= 0) {
768 remove_pending_lock(state
, blr
);
769 tevent_req_nterror(smb2req
->subreq
, NT_STATUS_LOCK_NOT_GRANTED
);
774 * Still can't get all the locks - keep waiting.
777 DEBUG(10,("reprocess_blocked_smb2_lock: only got %d locks of %d needed "
778 "for file %s, %s. Still waiting....\n",
780 (int)state
->lock_count
,
788 /****************************************************************
789 Attempt to proccess all outstanding blocking locks pending on
791 *****************************************************************/
793 void process_blocking_lock_queue_smb2(
794 struct smbd_server_connection
*sconn
, struct timeval tv_curr
)
796 struct smbd_smb2_request
*smb2req
, *nextreq
;
798 for (smb2req
= sconn
->smb2
.requests
; smb2req
; smb2req
= nextreq
) {
799 const uint8_t *inhdr
;
801 nextreq
= smb2req
->next
;
803 if (smb2req
->subreq
== NULL
) {
804 /* This message has been processed. */
807 if (!tevent_req_is_in_progress(smb2req
->subreq
)) {
808 /* This message has been processed. */
812 inhdr
= SMBD_SMB2_IN_HDR_PTR(smb2req
);
813 if (SVAL(inhdr
, SMB2_HDR_OPCODE
) == SMB2_OP_LOCK
) {
814 reprocess_blocked_smb2_lock(smb2req
, tv_curr
);
818 recalc_smb2_brl_timeout(sconn
);
821 /****************************************************************************
822 Remove any locks on this fd. Called from file_close().
823 ****************************************************************************/
825 void cancel_pending_lock_requests_by_fid_smb2(files_struct
*fsp
,
826 struct byte_range_lock
*br_lck
,
827 enum file_close_type close_type
)
829 struct smbd_server_connection
*sconn
= fsp
->conn
->sconn
;
830 struct smbd_smb2_request
*smb2req
, *nextreq
;
832 for (smb2req
= sconn
->smb2
.requests
; smb2req
; smb2req
= nextreq
) {
833 struct smbd_smb2_lock_state
*state
= NULL
;
834 files_struct
*fsp_curr
= NULL
;
835 struct blocking_lock_record
*blr
= NULL
;
836 const uint8_t *inhdr
;
838 nextreq
= smb2req
->next
;
840 if (smb2req
->subreq
== NULL
) {
841 /* This message has been processed. */
844 if (!tevent_req_is_in_progress(smb2req
->subreq
)) {
845 /* This message has been processed. */
849 inhdr
= SMBD_SMB2_IN_HDR_PTR(smb2req
);
850 if (SVAL(inhdr
, SMB2_HDR_OPCODE
) != SMB2_OP_LOCK
) {
851 /* Not a lock call. */
855 state
= tevent_req_data(smb2req
->subreq
,
856 struct smbd_smb2_lock_state
);
858 /* Strange - is this even possible ? */
862 fsp_curr
= smb2req
->compat_chain_fsp
;
863 if (fsp_curr
== NULL
) {
864 /* Strange - is this even possible ? */
868 if (fsp_curr
!= fsp
) {
869 /* It's not our fid */
875 /* Remove the entries from the lock db. */
876 brl_lock_cancel(br_lck
,
878 messaging_server_id(sconn
->msg_ctx
),
884 /* Finally end the request. */
885 if (close_type
== SHUTDOWN_CLOSE
) {
886 tevent_req_done(smb2req
->subreq
);
888 tevent_req_nterror(smb2req
->subreq
,
889 NT_STATUS_RANGE_NOT_LOCKED
);