2 Unix SMB/Netbios implementation.
4 async_io read handling using POSIX async io.
5 Copyright (C) Jeremy Allison 2005.
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/>.
22 #include "smbd/globals.h"
26 /* The signal we'll use to signify aio done. */
28 #define RT_SIGNAL_AIO (SIGRTMIN+3)
31 #ifndef HAVE_STRUCT_SIGEVENT_SIGEV_VALUE_SIVAL_PTR
32 #ifdef HAVE_STRUCT_SIGEVENT_SIGEV_VALUE_SIGVAL_PTR
33 #define sival_int sigval_int
34 #define sival_ptr sigval_ptr
38 /****************************************************************************
39 Initialize the signal handler for aio read/write.
40 *****************************************************************************/
42 static void smbd_aio_signal_handler(struct tevent_context
*ev_ctx
,
43 struct tevent_signal
*se
,
44 int signum
, int count
,
45 void *_info
, void *private_data
)
47 siginfo_t
*info
= (siginfo_t
*)_info
;
48 /* This won't work for SMB2.
49 * We need a mapping table from sival_int -> uint64_t mid. */
50 uint64_t mid
= (uint64_t)info
->si_value
.sival_int
;
52 smbd_aio_complete_mid(mid
);
56 static void initialize_async_io_handler(void)
58 if (aio_signal_event
) {
62 aio_signal_event
= tevent_add_signal(smbd_event_context(),
64 RT_SIGNAL_AIO
, SA_SIGINFO
,
65 smbd_aio_signal_handler
,
67 if (!aio_signal_event
) {
68 exit_server("Failed to setup RT_SIGNAL_AIO handler");
71 /* tevent supports 100 signal with SA_SIGINFO */
72 aio_pending_size
= 100;
76 /****************************************************************************
77 The buffer we keep around whilst an aio request is in process.
78 *****************************************************************************/
81 struct aio_extra
*next
, *prev
;
84 struct smb_request
*req
;
86 struct lock_struct lock
;
87 int (*handle_completion
)(struct aio_extra
*ex
, int errcode
);
90 static int handle_aio_read_complete(struct aio_extra
*aio_ex
, int errcode
);
91 static int handle_aio_write_complete(struct aio_extra
*aio_ex
, int errcode
);
93 static int aio_extra_destructor(struct aio_extra
*aio_ex
)
95 DLIST_REMOVE(aio_list_head
, aio_ex
);
99 /****************************************************************************
100 Create the extended aio struct we must keep around for the lifetime
102 *****************************************************************************/
104 static struct aio_extra
*create_aio_extra(files_struct
*fsp
, size_t buflen
)
106 struct aio_extra
*aio_ex
= TALLOC_ZERO_P(NULL
, struct aio_extra
);
112 /* The output buffer stored in the aio_ex is the start of
113 the smb return buffer. The buffer used in the acb
114 is the start of the reply data portion of that buffer. */
116 aio_ex
->outbuf
= TALLOC_ARRAY(aio_ex
, char, buflen
);
117 if (!aio_ex
->outbuf
) {
121 DLIST_ADD(aio_list_head
, aio_ex
);
122 talloc_set_destructor(aio_ex
, aio_extra_destructor
);
127 /****************************************************************************
128 Given the mid find the extended aio struct containing it.
129 *****************************************************************************/
131 static struct aio_extra
*find_aio_ex(uint64_t mid
)
135 for( p
= aio_list_head
; p
; p
= p
->next
) {
136 if (mid
== p
->req
->mid
) {
143 /****************************************************************************
144 We can have these many aio buffers in flight.
145 *****************************************************************************/
147 /****************************************************************************
148 Set up an aio request from a SMBreadX call.
149 *****************************************************************************/
151 NTSTATUS
schedule_aio_read_and_X(connection_struct
*conn
,
152 struct smb_request
*req
,
153 files_struct
*fsp
, SMB_OFF_T startpos
,
156 struct aio_extra
*aio_ex
;
159 size_t min_aio_read_size
= lp_aio_read_size(SNUM(conn
));
162 if (fsp
->base_fsp
!= NULL
) {
163 /* No AIO on streams yet */
164 DEBUG(10, ("AIO on streams not yet supported\n"));
165 return NT_STATUS_RETRY
;
168 if ((!min_aio_read_size
|| (smb_maxcnt
< min_aio_read_size
))
169 && !SMB_VFS_AIO_FORCE(fsp
)) {
170 /* Too small a read for aio request. */
171 DEBUG(10,("schedule_aio_read_and_X: read size (%u) too small "
172 "for minimum aio_read of %u\n",
173 (unsigned int)smb_maxcnt
,
174 (unsigned int)min_aio_read_size
));
175 return NT_STATUS_RETRY
;
178 /* Only do this on non-chained and non-chaining reads not using the
180 if (req_is_in_chain(req
) || (lp_write_cache_size(SNUM(conn
)) != 0)) {
181 return NT_STATUS_RETRY
;
184 if (outstanding_aio_calls
>= aio_pending_size
) {
185 DEBUG(10,("schedule_aio_read_and_X: Already have %d aio "
186 "activities outstanding.\n",
187 outstanding_aio_calls
));
188 return NT_STATUS_RETRY
;
191 /* The following is safe from integer wrap as we've already checked
192 smb_maxcnt is 128k or less. Wct is 12 for read replies */
194 bufsize
= smb_size
+ 12 * 2 + smb_maxcnt
;
196 /* Ensure aio is initialized. */
197 initialize_async_io_handler();
199 if ((aio_ex
= create_aio_extra(fsp
, bufsize
)) == NULL
) {
200 DEBUG(10,("schedule_aio_read_and_X: malloc fail.\n"));
201 return NT_STATUS_NO_MEMORY
;
203 aio_ex
->handle_completion
= handle_aio_read_complete
;
205 construct_reply_common_req(req
, aio_ex
->outbuf
);
206 srv_set_message(aio_ex
->outbuf
, 12, 0, True
);
207 SCVAL(aio_ex
->outbuf
,smb_vwv0
,0xFF); /* Never a chained reply. */
209 init_strict_lock_struct(fsp
, (uint64_t)req
->smbpid
,
210 (uint64_t)startpos
, (uint64_t)smb_maxcnt
, READ_LOCK
,
213 /* Take the lock until the AIO completes. */
214 if (!SMB_VFS_STRICT_LOCK(conn
, fsp
, &aio_ex
->lock
)) {
216 return NT_STATUS_FILE_LOCK_CONFLICT
;
221 /* Now set up the aio record for the read call. */
223 a
->aio_fildes
= fsp
->fh
->fd
;
224 a
->aio_buf
= smb_buf(aio_ex
->outbuf
);
225 a
->aio_nbytes
= smb_maxcnt
;
226 a
->aio_offset
= startpos
;
227 a
->aio_sigevent
.sigev_notify
= SIGEV_SIGNAL
;
228 a
->aio_sigevent
.sigev_signo
= RT_SIGNAL_AIO
;
229 a
->aio_sigevent
.sigev_value
.sival_int
= req
->mid
;
231 ret
= SMB_VFS_AIO_READ(fsp
, a
);
233 DEBUG(0,("schedule_aio_read_and_X: aio_read failed. "
234 "Error %s\n", strerror(errno
) ));
235 SMB_VFS_STRICT_UNLOCK(conn
, fsp
, &aio_ex
->lock
);
237 return NT_STATUS_RETRY
;
240 outstanding_aio_calls
++;
241 aio_ex
->req
= talloc_move(aio_ex
, &req
);
243 DEBUG(10,("schedule_aio_read_and_X: scheduled aio_read for file %s, "
244 "offset %.0f, len = %u (mid = %u)\n",
245 fsp_str_dbg(fsp
), (double)startpos
, (unsigned int)smb_maxcnt
,
246 (unsigned int)aio_ex
->req
->mid
));
251 /****************************************************************************
252 Set up an aio request from a SMBwriteX call.
253 *****************************************************************************/
255 NTSTATUS
schedule_aio_write_and_X(connection_struct
*conn
,
256 struct smb_request
*req
,
257 files_struct
*fsp
, char *data
,
261 struct aio_extra
*aio_ex
;
264 bool write_through
= BITSETW(req
->vwv
+7,0);
265 size_t min_aio_write_size
= lp_aio_write_size(SNUM(conn
));
268 if (fsp
->base_fsp
!= NULL
) {
269 /* No AIO on streams yet */
270 DEBUG(10, ("AIO on streams not yet supported\n"));
271 return NT_STATUS_RETRY
;
274 if ((!min_aio_write_size
|| (numtowrite
< min_aio_write_size
))
275 && !SMB_VFS_AIO_FORCE(fsp
)) {
276 /* Too small a write for aio request. */
277 DEBUG(10,("schedule_aio_write_and_X: write size (%u) too "
278 "small for minimum aio_write of %u\n",
279 (unsigned int)numtowrite
,
280 (unsigned int)min_aio_write_size
));
281 return NT_STATUS_RETRY
;
284 /* Only do this on non-chained and non-chaining reads not using the
286 if (req_is_in_chain(req
) || (lp_write_cache_size(SNUM(conn
)) != 0)) {
287 return NT_STATUS_RETRY
;
290 if (outstanding_aio_calls
>= aio_pending_size
) {
291 DEBUG(3,("schedule_aio_write_and_X: Already have %d aio "
292 "activities outstanding.\n",
293 outstanding_aio_calls
));
294 DEBUG(10,("schedule_aio_write_and_X: failed to schedule "
295 "aio_write for file %s, offset %.0f, len = %u "
297 fsp_str_dbg(fsp
), (double)startpos
,
298 (unsigned int)numtowrite
,
299 (unsigned int)req
->mid
));
300 return NT_STATUS_RETRY
;
303 /* Ensure aio is initialized. */
304 initialize_async_io_handler();
306 bufsize
= smb_size
+ 6*2;
308 if (!(aio_ex
= create_aio_extra(fsp
, bufsize
))) {
309 DEBUG(0,("schedule_aio_write_and_X: malloc fail.\n"));
310 return NT_STATUS_NO_MEMORY
;
312 aio_ex
->handle_completion
= handle_aio_write_complete
;
314 construct_reply_common_req(req
, aio_ex
->outbuf
);
315 srv_set_message(aio_ex
->outbuf
, 6, 0, True
);
316 SCVAL(aio_ex
->outbuf
,smb_vwv0
,0xFF); /* Never a chained reply. */
318 init_strict_lock_struct(fsp
, (uint64_t)req
->smbpid
,
319 (uint64_t)startpos
, (uint64_t)numtowrite
, WRITE_LOCK
,
322 /* Take the lock until the AIO completes. */
323 if (!SMB_VFS_STRICT_LOCK(conn
, fsp
, &aio_ex
->lock
)) {
325 return NT_STATUS_FILE_LOCK_CONFLICT
;
330 /* Now set up the aio record for the write call. */
332 a
->aio_fildes
= fsp
->fh
->fd
;
334 a
->aio_nbytes
= numtowrite
;
335 a
->aio_offset
= startpos
;
336 a
->aio_sigevent
.sigev_notify
= SIGEV_SIGNAL
;
337 a
->aio_sigevent
.sigev_signo
= RT_SIGNAL_AIO
;
338 a
->aio_sigevent
.sigev_value
.sival_int
= req
->mid
;
340 ret
= SMB_VFS_AIO_WRITE(fsp
, a
);
342 DEBUG(3,("schedule_aio_wrote_and_X: aio_write failed. "
343 "Error %s\n", strerror(errno
) ));
344 SMB_VFS_STRICT_UNLOCK(conn
, fsp
, &aio_ex
->lock
);
346 return NT_STATUS_RETRY
;
349 outstanding_aio_calls
++;
350 aio_ex
->req
= talloc_move(aio_ex
, &req
);
352 /* This should actually be improved to span the write. */
353 contend_level2_oplocks_begin(fsp
, LEVEL2_CONTEND_WRITE
);
354 contend_level2_oplocks_end(fsp
, LEVEL2_CONTEND_WRITE
);
356 if (!write_through
&& !lp_syncalways(SNUM(fsp
->conn
))
357 && fsp
->aio_write_behind
) {
358 /* Lie to the client and immediately claim we finished the
360 SSVAL(aio_ex
->outbuf
,smb_vwv2
,numtowrite
);
361 SSVAL(aio_ex
->outbuf
,smb_vwv4
,(numtowrite
>>16)&1);
362 show_msg(aio_ex
->outbuf
);
363 if (!srv_send_smb(smbd_server_fd(),aio_ex
->outbuf
,
364 true, aio_ex
->req
->seqnum
+1,
365 IS_CONN_ENCRYPTED(fsp
->conn
),
366 &aio_ex
->req
->pcd
)) {
367 exit_server_cleanly("handle_aio_write: srv_send_smb "
370 DEBUG(10,("schedule_aio_write_and_X: scheduled aio_write "
371 "behind for file %s\n", fsp_str_dbg(fsp
)));
374 DEBUG(10,("schedule_aio_write_and_X: scheduled aio_write for file "
375 "%s, offset %.0f, len = %u (mid = %u) "
376 "outstanding_aio_calls = %d\n",
377 fsp_str_dbg(fsp
), (double)startpos
, (unsigned int)numtowrite
,
378 (unsigned int)aio_ex
->req
->mid
, outstanding_aio_calls
));
383 /****************************************************************************
384 Complete the read and return the data or error back to the client.
385 Returns errno or zero if all ok.
386 *****************************************************************************/
388 static int handle_aio_read_complete(struct aio_extra
*aio_ex
, int errcode
)
391 char *outbuf
= aio_ex
->outbuf
;
392 char *data
= smb_buf(outbuf
);
393 ssize_t nread
= SMB_VFS_AIO_RETURN(aio_ex
->fsp
,&aio_ex
->acb
);
396 /* We're relying here on the fact that if the fd is
397 closed then the aio will complete and aio_return
398 will return an error. Hopefully this is
401 DEBUG( 3,( "handle_aio_read_complete: file %s nread == %d. "
403 fsp_str_dbg(aio_ex
->fsp
), (int)nread
, strerror(errcode
)));
405 ERROR_NT(map_nt_error_from_unix(errcode
));
406 outsize
= srv_set_message(outbuf
,0,0,true);
408 outsize
= srv_set_message(outbuf
,12,nread
,False
);
409 SSVAL(outbuf
,smb_vwv2
,0xFFFF); /* Remaining - must be * -1. */
410 SSVAL(outbuf
,smb_vwv5
,nread
);
411 SSVAL(outbuf
,smb_vwv6
,smb_offset(data
,outbuf
));
412 SSVAL(outbuf
,smb_vwv7
,((nread
>> 16) & 1));
413 SSVAL(smb_buf(outbuf
),-2,nread
);
415 aio_ex
->fsp
->fh
->pos
= aio_ex
->acb
.aio_offset
+ nread
;
416 aio_ex
->fsp
->fh
->position_information
= aio_ex
->fsp
->fh
->pos
;
418 DEBUG( 3, ( "handle_aio_read_complete file %s max=%d "
420 fsp_str_dbg(aio_ex
->fsp
),
421 (int)aio_ex
->acb
.aio_nbytes
, (int)nread
) );
424 smb_setlen(outbuf
,outsize
- 4);
426 if (!srv_send_smb(smbd_server_fd(),outbuf
,
427 true, aio_ex
->req
->seqnum
+1,
428 IS_CONN_ENCRYPTED(aio_ex
->fsp
->conn
), NULL
)) {
429 exit_server_cleanly("handle_aio_read_complete: srv_send_smb "
433 DEBUG(10,("handle_aio_read_complete: scheduled aio_read completed "
434 "for file %s, offset %.0f, len = %u\n",
435 fsp_str_dbg(aio_ex
->fsp
), (double)aio_ex
->acb
.aio_offset
,
436 (unsigned int)nread
));
441 /****************************************************************************
442 Complete the write and return the data or error back to the client.
443 Returns error code or zero if all ok.
444 *****************************************************************************/
446 static int handle_aio_write_complete(struct aio_extra
*aio_ex
, int errcode
)
448 files_struct
*fsp
= aio_ex
->fsp
;
449 char *outbuf
= aio_ex
->outbuf
;
450 ssize_t numtowrite
= aio_ex
->acb
.aio_nbytes
;
451 ssize_t nwritten
= SMB_VFS_AIO_RETURN(fsp
,&aio_ex
->acb
);
453 if (fsp
->aio_write_behind
) {
454 if (nwritten
!= numtowrite
) {
455 if (nwritten
== -1) {
456 DEBUG(5,("handle_aio_write_complete: "
457 "aio_write_behind failed ! File %s "
458 "is corrupt ! Error %s\n",
459 fsp_str_dbg(fsp
), strerror(errcode
)));
461 DEBUG(0,("handle_aio_write_complete: "
462 "aio_write_behind failed ! File %s "
463 "is corrupt ! Wanted %u bytes but "
464 "only wrote %d\n", fsp_str_dbg(fsp
),
465 (unsigned int)numtowrite
,
470 DEBUG(10,("handle_aio_write_complete: "
471 "aio_write_behind completed for file %s\n",
474 /* TODO: should no return 0 in case of an error !!! */
478 /* We don't need outsize or set_message here as we've already set the
479 fixed size length when we set up the aio call. */
482 DEBUG( 3,( "handle_aio_write: file %s wanted %u bytes. "
483 "nwritten == %d. Error = %s\n",
484 fsp_str_dbg(fsp
), (unsigned int)numtowrite
,
485 (int)nwritten
, strerror(errcode
) ));
487 ERROR_NT(map_nt_error_from_unix(errcode
));
488 srv_set_message(outbuf
,0,0,true);
490 bool write_through
= BITSETW(aio_ex
->req
->vwv
+7,0);
493 SSVAL(outbuf
,smb_vwv2
,nwritten
);
494 SSVAL(outbuf
,smb_vwv4
,(nwritten
>>16)&1);
495 if (nwritten
< (ssize_t
)numtowrite
) {
496 SCVAL(outbuf
,smb_rcls
,ERRHRD
);
497 SSVAL(outbuf
,smb_err
,ERRdiskfull
);
500 DEBUG(3,("handle_aio_write: fnum=%d num=%d wrote=%d\n",
501 fsp
->fnum
, (int)numtowrite
, (int)nwritten
));
502 status
= sync_file(fsp
->conn
,fsp
, write_through
);
503 if (!NT_STATUS_IS_OK(status
)) {
505 ERROR_BOTH(map_nt_error_from_unix(errcode
),
506 ERRHRD
, ERRdiskfull
);
507 srv_set_message(outbuf
,0,0,true);
508 DEBUG(5,("handle_aio_write: sync_file for %s returned %s\n",
509 fsp_str_dbg(fsp
), nt_errstr(status
)));
512 aio_ex
->fsp
->fh
->pos
= aio_ex
->acb
.aio_offset
+ nwritten
;
516 if (!srv_send_smb(smbd_server_fd(),outbuf
,
517 true, aio_ex
->req
->seqnum
+1,
518 IS_CONN_ENCRYPTED(fsp
->conn
),
520 exit_server_cleanly("handle_aio_write: srv_send_smb failed.");
523 DEBUG(10,("handle_aio_write_complete: scheduled aio_write completed "
524 "for file %s, offset %.0f, requested %u, written = %u\n",
525 fsp_str_dbg(fsp
), (double)aio_ex
->acb
.aio_offset
,
526 (unsigned int)numtowrite
, (unsigned int)nwritten
));
531 /****************************************************************************
532 Handle any aio completion. Returns True if finished (and sets *perr if err
533 was non-zero), False if not.
534 *****************************************************************************/
536 static bool handle_aio_completed(struct aio_extra
*aio_ex
, int *perr
)
538 files_struct
*fsp
= NULL
;
542 DEBUG(3, ("handle_aio_completed: Non-existing aio_ex passed\n"));
548 /* Ensure the operation has really completed. */
549 err
= SMB_VFS_AIO_ERROR(fsp
, &aio_ex
->acb
);
550 if (err
== EINPROGRESS
) {
551 DEBUG(10,( "handle_aio_completed: operation mid %llu still in "
552 "process for file %s\n",
553 (unsigned long long)aio_ex
->req
->mid
,
554 fsp_str_dbg(aio_ex
->fsp
)));
558 /* Unlock now we're done. */
559 SMB_VFS_STRICT_UNLOCK(fsp
->conn
, fsp
, &aio_ex
->lock
);
561 if (err
== ECANCELED
) {
562 /* If error is ECANCELED then don't return anything to the
564 DEBUG(10,( "handle_aio_completed: operation mid %llu"
566 (unsigned long long)aio_ex
->req
->mid
));
570 err
= aio_ex
->handle_completion(aio_ex
, err
);
572 *perr
= err
; /* Only save non-zero errors. */
578 /****************************************************************************
579 Handle any aio completion inline.
580 *****************************************************************************/
582 void smbd_aio_complete_mid(uint64_t mid
)
584 files_struct
*fsp
= NULL
;
585 struct aio_extra
*aio_ex
= find_aio_ex(mid
);
588 outstanding_aio_calls
--;
590 DEBUG(10,("smbd_aio_complete_mid: mid[%llu]\n",
591 (unsigned long long)mid
));
594 DEBUG(3,("smbd_aio_complete_mid: Can't find record to "
596 (unsigned long long)mid
));
602 /* file was closed whilst I/O was outstanding. Just
604 DEBUG( 3,( "smbd_aio_complete_mid: file closed whilst "
605 "aio outstanding (mid[%llu]).\n",
606 (unsigned long long)mid
));
610 if (!handle_aio_completed(aio_ex
, &ret
)) {
617 /****************************************************************************
618 We're doing write behind and the client closed the file. Wait up to 30
619 seconds (my arbitrary choice) for the aio to complete. Return 0 if all writes
620 completed, errno to return if not.
621 *****************************************************************************/
623 #define SMB_TIME_FOR_AIO_COMPLETE_WAIT 29
625 int wait_for_aio_completion(files_struct
*fsp
)
627 struct aio_extra
*aio_ex
;
628 const SMB_STRUCT_AIOCB
**aiocb_list
;
629 int aio_completion_count
= 0;
630 time_t start_time
= time(NULL
);
633 for (seconds_left
= SMB_TIME_FOR_AIO_COMPLETE_WAIT
;
634 seconds_left
>= 0;) {
639 aio_completion_count
= 0;
640 for( aio_ex
= aio_list_head
; aio_ex
; aio_ex
= aio_ex
->next
) {
641 if (aio_ex
->fsp
== fsp
) {
642 aio_completion_count
++;
646 if (!aio_completion_count
) {
650 DEBUG(3,("wait_for_aio_completion: waiting for %d aio events "
651 "to complete.\n", aio_completion_count
));
653 aiocb_list
= SMB_MALLOC_ARRAY(const SMB_STRUCT_AIOCB
*,
654 aio_completion_count
);
659 for( i
= 0, aio_ex
= aio_list_head
;
661 aio_ex
= aio_ex
->next
) {
662 if (aio_ex
->fsp
== fsp
) {
663 aiocb_list
[i
++] = &aio_ex
->acb
;
667 /* Now wait up to seconds_left for completion. */
668 ts
.tv_sec
= seconds_left
;
671 DEBUG(10,("wait_for_aio_completion: %d events, doing a wait "
673 aio_completion_count
, seconds_left
));
675 err
= SMB_VFS_AIO_SUSPEND(fsp
, aiocb_list
,
676 aio_completion_count
, &ts
);
678 DEBUG(10,("wait_for_aio_completion: returned err = %d, "
679 "errno = %s\n", err
, strerror(errno
) ));
681 if (err
== -1 && errno
== EAGAIN
) {
682 DEBUG(0,("wait_for_aio_completion: aio_suspend timed "
683 "out waiting for %d events after a wait of "
684 "%d seconds\n", aio_completion_count
,
687 cancel_aio_by_fsp(fsp
);
688 SAFE_FREE(aiocb_list
);
692 /* One or more events might have completed - process them if
694 for( i
= 0; i
< aio_completion_count
; i
++) {
695 /* FIXME. Won't work for SMB2. */
696 uint64_t mid
= (uint64_t)aiocb_list
[i
]->aio_sigevent
.sigev_value
.sival_int
;
698 aio_ex
= find_aio_ex(mid
);
701 DEBUG(0, ("wait_for_aio_completion: mid %llu "
702 "doesn't match an aio record\n",
703 (unsigned long long)mid
));
707 if (!handle_aio_completed(aio_ex
, &err
)) {
713 SAFE_FREE(aiocb_list
);
714 seconds_left
= SMB_TIME_FOR_AIO_COMPLETE_WAIT
715 - (time(NULL
) - start_time
);
718 /* We timed out - we don't know why. Return ret if already an error,
720 DEBUG(10,("wait_for_aio_completion: aio_suspend timed out waiting "
722 aio_completion_count
));
727 /****************************************************************************
728 Cancel any outstanding aio requests. The client doesn't care about the reply.
729 *****************************************************************************/
731 void cancel_aio_by_fsp(files_struct
*fsp
)
733 struct aio_extra
*aio_ex
;
735 for( aio_ex
= aio_list_head
; aio_ex
; aio_ex
= aio_ex
->next
) {
736 if (aio_ex
->fsp
== fsp
) {
737 /* Unlock now we're done. */
738 SMB_VFS_STRICT_UNLOCK(fsp
->conn
, fsp
, &aio_ex
->lock
);
740 /* Don't delete the aio_extra record as we may have
741 completed and don't yet know it. Just do the
742 aio_cancel call and return. */
743 SMB_VFS_AIO_CANCEL(fsp
, &aio_ex
->acb
);
744 aio_ex
->fsp
= NULL
; /* fsp will be closed when we
751 NTSTATUS
schedule_aio_read_and_X(connection_struct
*conn
,
752 struct smb_request
*req
,
753 files_struct
*fsp
, SMB_OFF_T startpos
,
756 return NT_STATUS_RETRY
;
759 NTSTATUS
schedule_aio_write_and_X(connection_struct
*conn
,
760 struct smb_request
*req
,
761 files_struct
*fsp
, char *data
,
765 return NT_STATUS_RETRY
;
768 void cancel_aio_by_fsp(files_struct
*fsp
)
772 int wait_for_aio_completion(files_struct
*fsp
)
777 void smbd_aio_complete_mid(uint64_t mid
);