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 2 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, write to the Free Software
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 /* The signal we'll use to signify aio done. */
28 #define RT_SIGNAL_AIO (SIGRTMIN+3)
31 /****************************************************************************
32 The buffer we keep around whilst an aio request is in process.
33 *****************************************************************************/
36 struct aio_extra
*next
, *prev
;
45 static struct aio_extra
*aio_list_head
;
47 /****************************************************************************
48 Create the extended aio struct we must keep around for the lifetime
50 *****************************************************************************/
52 static struct aio_extra
*create_aio_ex_read(files_struct
*fsp
, size_t buflen
, uint16 mid
)
54 struct aio_extra
*aio_ex
= SMB_MALLOC_P(struct aio_extra
);
60 /* The output buffer stored in the aio_ex is the start of
61 the smb return buffer. The buffer used in the acb
62 is the start of the reply data portion of that buffer. */
63 aio_ex
->outbuf
= SMB_MALLOC_ARRAY(char, buflen
);
64 if (!aio_ex
->outbuf
) {
68 DLIST_ADD(aio_list_head
, aio_ex
);
70 aio_ex
->read_req
= True
;
75 /****************************************************************************
76 Create the extended aio struct we must keep around for the lifetime
77 of the aio_write call.
78 *****************************************************************************/
80 static struct aio_extra
*create_aio_ex_write(files_struct
*fsp
, size_t outbuflen
, uint16 mid
)
82 struct aio_extra
*aio_ex
= SMB_MALLOC_P(struct aio_extra
);
89 /* We need space for an output reply of outbuflen bytes. */
90 aio_ex
->outbuf
= SMB_MALLOC_ARRAY(char, outbuflen
);
91 if (!aio_ex
->outbuf
) {
95 /* Steal the input buffer containing the write data from the main SMB call. */
96 /* We must re-allocate a new one here. */
97 if (NewInBuffer(&aio_ex
->inbuf
) == NULL
) {
98 SAFE_FREE(aio_ex
->outbuf
);
103 /* aio_ex->inbuf now contains the stolen old InBuf containing the data to write. */
105 DLIST_ADD(aio_list_head
, aio_ex
);
107 aio_ex
->read_req
= False
;
112 /****************************************************************************
113 Delete the extended aio struct.
114 *****************************************************************************/
116 static void delete_aio_ex(struct aio_extra
*aio_ex
)
118 DLIST_REMOVE(aio_list_head
, aio_ex
);
119 /* Safe to do as we've removed ourselves from the in use list first. */
120 free_InBuffer(aio_ex
->inbuf
);
122 SAFE_FREE(aio_ex
->outbuf
);
126 /****************************************************************************
127 Given the aiocb struct find the extended aio struct containing it.
128 *****************************************************************************/
130 static struct aio_extra
*find_aio_ex(uint16 mid
)
134 for( p
= aio_list_head
; p
; p
= p
->next
) {
142 /****************************************************************************
143 We can have these many aio buffers in flight.
144 *****************************************************************************/
146 #define AIO_PENDING_SIZE 10
147 static sig_atomic_t signals_received
;
148 static int outstanding_aio_calls
;
149 static uint16 aio_pending_array
[AIO_PENDING_SIZE
];
151 /****************************************************************************
152 Signal handler when an aio request completes.
153 *****************************************************************************/
155 static void signal_handler(int sig
, siginfo_t
*info
, void *unused
)
157 if (signals_received
< AIO_PENDING_SIZE
- 1) {
158 aio_pending_array
[signals_received
] = *(uint16
*)(info
->si_value
.sival_ptr
);
160 } /* Else signal is lost. */
161 sys_select_signal(RT_SIGNAL_AIO
);
164 /****************************************************************************
165 Is there a signal waiting ?
166 *****************************************************************************/
168 BOOL
aio_finished(void)
170 return (signals_received
!= 0);
173 /****************************************************************************
174 Initialize the signal handler for aio read/write.
175 *****************************************************************************/
177 void initialize_async_io_handler(void)
179 struct sigaction act
;
182 act
.sa_sigaction
= signal_handler
;
183 act
.sa_flags
= SA_SIGINFO
;
184 sigemptyset( &act
.sa_mask
);
185 if (sigaction(RT_SIGNAL_AIO
, &act
, NULL
) != 0) {
186 DEBUG(0,("Failed to setup RT_SIGNAL_AIO handler\n"));
189 /* the signal can start off blocked due to a bug in bash */
190 BlockSignals(False
, RT_SIGNAL_AIO
);
193 /****************************************************************************
194 Set up an aio request from a SMBreadX call.
195 *****************************************************************************/
197 BOOL
schedule_aio_read_and_X(connection_struct
*conn
,
198 char *inbuf
, char *outbuf
,
199 int length
, int len_outbuf
,
200 files_struct
*fsp
, SMB_OFF_T startpos
,
203 struct aio_extra
*aio_ex
;
206 size_t min_aio_read_size
= lp_aio_read_size(SNUM(conn
));
208 if (!min_aio_read_size
|| (smb_maxcnt
< min_aio_read_size
)) {
209 /* Too small a read for aio request. */
210 DEBUG(10,("schedule_aio_read_and_X: read size (%u) too small "
211 "for minimum aio_read of %u\n",
212 (unsigned int)smb_maxcnt
,
213 (unsigned int)min_aio_read_size
));
217 /* Only do this on non-chained and non-chaining reads not using the write cache. */
218 if (chain_size
!=0 || (CVAL(inbuf
,smb_vwv0
) != 0xFF) || (lp_write_cache_size(SNUM(conn
)) != 0) ) {
222 if (outstanding_aio_calls
>= AIO_PENDING_SIZE
) {
223 DEBUG(10,("schedule_aio_read_and_X: Already have %d aio activities outstanding.\n",
224 outstanding_aio_calls
));
228 /* The following is safe from integer wrap as we've already
229 checked smb_maxcnt is 128k or less. */
230 bufsize
= PTR_DIFF(smb_buf(outbuf
),outbuf
) + smb_maxcnt
;
232 if ((aio_ex
= create_aio_ex_read(fsp
, bufsize
, SVAL(inbuf
,smb_mid
))) == NULL
) {
233 DEBUG(10,("schedule_aio_read_and_X: malloc fail.\n"));
237 /* Copy the SMB header already setup in outbuf. */
238 memcpy(aio_ex
->outbuf
, outbuf
, smb_buf(outbuf
) - outbuf
);
239 SCVAL(aio_ex
->outbuf
,smb_vwv0
,0xFF); /* Never a chained reply. */
243 /* Now set up the aio record for the read call. */
245 a
->aio_fildes
= fsp
->fh
->fd
;
246 a
->aio_buf
= smb_buf(aio_ex
->outbuf
);
247 a
->aio_nbytes
= smb_maxcnt
;
248 a
->aio_offset
= startpos
;
249 a
->aio_sigevent
.sigev_notify
= SIGEV_SIGNAL
;
250 a
->aio_sigevent
.sigev_signo
= RT_SIGNAL_AIO
;
251 a
->aio_sigevent
.sigev_value
.sival_ptr
= (void *)&aio_ex
->mid
;
253 if (SMB_VFS_AIO_READ(fsp
,a
) == -1) {
254 DEBUG(0,("schedule_aio_read_and_X: aio_read failed. Error %s\n",
256 delete_aio_ex(aio_ex
);
260 DEBUG(10,("schedule_aio_read_and_X: scheduled aio_read for file %s, offset %.0f, len = %u (mid = %u)\n",
261 fsp
->fsp_name
, (double)startpos
, (unsigned int)smb_maxcnt
, (unsigned int)aio_ex
->mid
));
263 srv_defer_sign_response(aio_ex
->mid
);
264 outstanding_aio_calls
++;
268 /****************************************************************************
269 Set up an aio request from a SMBwriteX call.
270 *****************************************************************************/
272 BOOL
schedule_aio_write_and_X(connection_struct
*conn
,
273 char *inbuf
, char *outbuf
,
274 int length
, int len_outbuf
,
275 files_struct
*fsp
, char *data
,
279 struct aio_extra
*aio_ex
;
282 BOOL write_through
= BITSETW(inbuf
+smb_vwv7
,0);
283 size_t min_aio_write_size
= lp_aio_write_size(SNUM(conn
));
285 if (!min_aio_write_size
|| (numtowrite
< min_aio_write_size
)) {
286 /* Too small a write for aio request. */
287 DEBUG(10,("schedule_aio_write_and_X: write size (%u) too small "
288 "for minimum aio_write of %u\n",
289 (unsigned int)numtowrite
,
290 (unsigned int)min_aio_write_size
));
294 /* Only do this on non-chained and non-chaining reads not using the write cache. */
295 if (chain_size
!=0 || (CVAL(inbuf
,smb_vwv0
) != 0xFF) || (lp_write_cache_size(SNUM(conn
)) != 0) ) {
299 if (outstanding_aio_calls
>= AIO_PENDING_SIZE
) {
300 DEBUG(3,("schedule_aio_write_and_X: Already have %d aio activities outstanding.\n",
301 outstanding_aio_calls
));
302 DEBUG(10,("schedule_aio_write_and_X: failed to schedule aio_write for file %s, offset %.0f, len = %u (mid = %u)\n",
303 fsp
->fsp_name
, (double)startpos
, (unsigned int)numtowrite
, (unsigned int)SVAL(inbuf
,smb_mid
) ));
307 outbufsize
= smb_len(outbuf
) + 4;
308 if ((aio_ex
= create_aio_ex_write(fsp
, outbufsize
, SVAL(inbuf
,smb_mid
))) == NULL
) {
309 DEBUG(0,("schedule_aio_write_and_X: malloc fail.\n"));
314 SMB_ASSERT(aio_ex
->inbuf
== inbuf
);
316 /* Copy the SMB header already setup in outbuf. */
317 memcpy(aio_ex
->outbuf
, outbuf
, outbufsize
);
318 SCVAL(aio_ex
->outbuf
,smb_vwv0
,0xFF); /* Never a chained reply. */
322 /* Now set up the aio record for the write call. */
324 a
->aio_fildes
= fsp
->fh
->fd
;
325 a
->aio_buf
= data
; /* As we've stolen inbuf this points within inbuf. */
326 a
->aio_nbytes
= numtowrite
;
327 a
->aio_offset
= startpos
;
328 a
->aio_sigevent
.sigev_notify
= SIGEV_SIGNAL
;
329 a
->aio_sigevent
.sigev_signo
= RT_SIGNAL_AIO
;
330 a
->aio_sigevent
.sigev_value
.sival_ptr
= (void *)&aio_ex
->mid
;
332 if (SMB_VFS_AIO_WRITE(fsp
,a
) == -1) {
333 DEBUG(3,("schedule_aio_wrote_and_X: aio_write failed. Error %s\n",
335 /* Replace global InBuf as we're going to do a normal write. */
336 set_InBuffer(aio_ex
->inbuf
);
337 aio_ex
->inbuf
= NULL
;
338 delete_aio_ex(aio_ex
);
342 if (!write_through
&& !lp_syncalways(SNUM(fsp
->conn
)) && fsp
->aio_write_behind
) {
343 /* Lie to the client and immediately claim we finished the write. */
344 SSVAL(aio_ex
->outbuf
,smb_vwv2
,numtowrite
);
345 SSVAL(aio_ex
->outbuf
,smb_vwv4
,(numtowrite
>>16)&1);
346 show_msg(aio_ex
->outbuf
);
347 if (!send_smb(smbd_server_fd(),aio_ex
->outbuf
)) {
348 exit_server("handle_aio_write: send_smb failed.");
350 DEBUG(10,("schedule_aio_write_and_X: scheduled aio_write behind for file %s\n",
353 srv_defer_sign_response(aio_ex
->mid
);
355 outstanding_aio_calls
++;
357 DEBUG(10,("schedule_aio_write_and_X: scheduled aio_write for file %s, \
358 offset %.0f, len = %u (mid = %u) outstanding_aio_calls = %d\n",
359 fsp
->fsp_name
, (double)startpos
, (unsigned int)numtowrite
, (unsigned int)aio_ex
->mid
, outstanding_aio_calls
));
365 /****************************************************************************
366 Complete the read and return the data or error back to the client.
367 Returns errno or zero if all ok.
368 *****************************************************************************/
370 static int handle_aio_read_complete(struct aio_extra
*aio_ex
)
374 char *outbuf
= aio_ex
->outbuf
;
375 char *data
= smb_buf(outbuf
);
376 ssize_t nread
= SMB_VFS_AIO_RETURN(aio_ex
->fsp
,&aio_ex
->acb
);
379 /* We're relying here on the fact that if the fd is
380 closed then the aio will complete and aio_return
381 will return an error. Hopefully this is
384 /* If errno is ECANCELED then don't return anything to the client. */
385 if (errno
== ECANCELED
) {
386 srv_cancel_sign_response(aio_ex
->mid
);
390 DEBUG( 3,( "handle_aio_read_complete: file %s nread == -1. Error = %s\n",
391 aio_ex
->fsp
->fsp_name
, strerror(errno
) ));
393 outsize
= (UNIXERROR(ERRDOS
,ERRnoaccess
));
396 outsize
= set_message(outbuf
,12,nread
,False
);
397 SSVAL(outbuf
,smb_vwv2
,0xFFFF); /* Remaining - must be * -1. */
398 SSVAL(outbuf
,smb_vwv5
,nread
);
399 SSVAL(outbuf
,smb_vwv6
,smb_offset(data
,outbuf
));
400 SSVAL(outbuf
,smb_vwv7
,((nread
>> 16) & 1));
401 SSVAL(smb_buf(outbuf
),-2,nread
);
403 DEBUG( 3, ( "handle_aio_read_complete file %s max=%d nread=%d\n",
404 aio_ex
->fsp
->fsp_name
,
405 aio_ex
->acb
.aio_nbytes
, (int)nread
) );
408 smb_setlen(outbuf
,outsize
- 4);
410 if (!send_smb(smbd_server_fd(),outbuf
)) {
411 exit_server("handle_aio_read_complete: send_smb failed.");
414 DEBUG(10,("handle_aio_read_complete: scheduled aio_read completed for file %s, offset %.0f, len = %u\n",
415 aio_ex
->fsp
->fsp_name
, (double)aio_ex
->acb
.aio_offset
, (unsigned int)nread
));
420 /****************************************************************************
421 Complete the write and return the data or error back to the client.
422 Returns errno or zero if all ok.
423 *****************************************************************************/
425 static int handle_aio_write_complete(struct aio_extra
*aio_ex
)
428 files_struct
*fsp
= aio_ex
->fsp
;
429 char *outbuf
= aio_ex
->outbuf
;
430 ssize_t numtowrite
= aio_ex
->acb
.aio_nbytes
;
431 ssize_t nwritten
= SMB_VFS_AIO_RETURN(fsp
,&aio_ex
->acb
);
433 if (fsp
->aio_write_behind
) {
434 if (nwritten
!= numtowrite
) {
435 if (nwritten
== -1) {
436 DEBUG(5,("handle_aio_write_complete: aio_write_behind failed ! File %s is corrupt ! Error %s\n",
437 fsp
->fsp_name
, strerror(errno
) ));
440 DEBUG(0,("handle_aio_write_complete: aio_write_behind failed ! File %s is corrupt ! \
441 Wanted %u bytes but only wrote %d\n", fsp
->fsp_name
, (unsigned int)numtowrite
, (int)nwritten
));
445 DEBUG(10,("handle_aio_write_complete: aio_write_behind completed for file %s\n",
451 /* We don't need outsize or set_message here as we've already set the
452 fixed size length when we set up the aio call. */
455 DEBUG( 3,( "handle_aio_write: file %s wanted %u bytes. nwritten == %d. Error = %s\n",
456 fsp
->fsp_name
, (unsigned int)numtowrite
,
457 (int)nwritten
, strerror(errno
) ));
459 /* If errno is ECANCELED then don't return anything to the client. */
460 if (errno
== ECANCELED
) {
461 srv_cancel_sign_response(aio_ex
->mid
);
465 UNIXERROR(ERRHRD
,ERRdiskfull
);
468 BOOL write_through
= BITSETW(aio_ex
->inbuf
+smb_vwv7
,0);
470 SSVAL(outbuf
,smb_vwv2
,nwritten
);
471 SSVAL(outbuf
,smb_vwv4
,(nwritten
>>16)&1);
472 if (nwritten
< (ssize_t
)numtowrite
) {
473 SCVAL(outbuf
,smb_rcls
,ERRHRD
);
474 SSVAL(outbuf
,smb_err
,ERRdiskfull
);
477 DEBUG(3,("handle_aio_write: fnum=%d num=%d wrote=%d\n", fsp
->fnum
, (int)numtowrite
, (int)nwritten
));
478 if (lp_syncalways(SNUM(fsp
->conn
)) || write_through
) {
479 sync_file(fsp
->conn
,fsp
);
484 if (!send_smb(smbd_server_fd(),outbuf
)) {
485 exit_server("handle_aio_write: send_smb failed.");
488 DEBUG(10,("handle_aio_write_complete: scheduled aio_write completed for file %s, offset %.0f, requested %u, written = %u\n",
489 fsp
->fsp_name
, (double)aio_ex
->acb
.aio_offset
, (unsigned int)numtowrite
, (unsigned int)nwritten
));
494 /****************************************************************************
495 Handle any aio completion. Returns True if finished (and sets *perr if err was non-zero),
497 *****************************************************************************/
499 static BOOL
handle_aio_completed(struct aio_extra
*aio_ex
, int *perr
)
503 /* Ensure the operation has really completed. */
504 if (SMB_VFS_AIO_ERROR(aio_ex
->fsp
, &aio_ex
->acb
) == EINPROGRESS
) {
505 DEBUG(10,( "handle_aio_completed: operation mid %u still in process for file %s\n",
506 aio_ex
->mid
, aio_ex
->fsp
->fsp_name
));
510 if (aio_ex
->read_req
) {
511 err
= handle_aio_read_complete(aio_ex
);
513 err
= handle_aio_write_complete(aio_ex
);
517 *perr
= err
; /* Only save non-zero errors. */
523 /****************************************************************************
524 Handle any aio completion inline.
525 Returns non-zero errno if fail or zero if all ok.
526 *****************************************************************************/
528 int process_aio_queue(void)
533 BlockSignals(True
, RT_SIGNAL_AIO
);
535 DEBUG(10,("process_aio_queue: signals_received = %d\n", (int)signals_received
));
536 DEBUG(10,("process_aio_queue: outstanding_aio_calls = %d\n", outstanding_aio_calls
));
538 if (!signals_received
) {
539 BlockSignals(False
, RT_SIGNAL_AIO
);
543 /* Drain all the complete aio_reads. */
544 for (i
= 0; i
< signals_received
; i
++) {
545 uint16 mid
= aio_pending_array
[i
];
546 files_struct
*fsp
= NULL
;
547 struct aio_extra
*aio_ex
= find_aio_ex(mid
);
550 DEBUG(3,("process_aio_queue: Can't find record to match mid %u.\n",
552 srv_cancel_sign_response(mid
);
558 /* file was closed whilst I/O was outstanding. Just ignore. */
559 DEBUG( 3,( "process_aio_queue: file closed whilst aio outstanding.\n"));
560 srv_cancel_sign_response(mid
);
564 if (!handle_aio_completed(aio_ex
, &ret
)) {
568 delete_aio_ex(aio_ex
);
571 outstanding_aio_calls
-= signals_received
;
572 signals_received
= 0;
573 BlockSignals(False
, RT_SIGNAL_AIO
);
577 /****************************************************************************
578 We're doing write behind and the client closed the file. Wait up to 30 seconds
579 (my arbitrary choice) for the aio to complete. Return 0 if all writes completed,
580 errno to return if not.
581 *****************************************************************************/
583 #define SMB_TIME_FOR_AIO_COMPLETE_WAIT 29
585 BOOL
wait_for_aio_completion(files_struct
*fsp
)
587 struct aio_extra
*aio_ex
;
588 const SMB_STRUCT_AIOCB
**aiocb_list
;
589 int aio_completion_count
= 0;
590 time_t start_time
= time(NULL
);
594 for (seconds_left
= SMB_TIME_FOR_AIO_COMPLETE_WAIT
; seconds_left
>= 0;) {
599 aio_completion_count
= 0;
600 for( aio_ex
= aio_list_head
; aio_ex
; aio_ex
= aio_ex
->next
) {
601 if (aio_ex
->fsp
== fsp
) {
602 aio_completion_count
++;
606 if (!aio_completion_count
) {
610 DEBUG(3,("wait_for_aio_completion: waiting for %d aio events to complete.\n",
611 aio_completion_count
));
613 aiocb_list
= SMB_MALLOC_ARRAY(const SMB_STRUCT_AIOCB
*, aio_completion_count
);
618 for( i
= 0, aio_ex
= aio_list_head
; aio_ex
; aio_ex
= aio_ex
->next
) {
619 if (aio_ex
->fsp
== fsp
) {
620 aiocb_list
[i
++] = &aio_ex
->acb
;
624 /* Now wait up to seconds_left for completion. */
625 ts
.tv_sec
= seconds_left
;
628 DEBUG(10,("wait_for_aio_completion: %d events, doing a wait of %d seconds.\n",
629 aio_completion_count
, seconds_left
));
631 err
= SMB_VFS_AIO_SUSPEND(fsp
, aiocb_list
, aio_completion_count
, &ts
);
633 DEBUG(10,("wait_for_aio_completion: returned err = %d, errno = %s\n",
634 err
, strerror(errno
) ));
636 if (err
== -1 && errno
== EAGAIN
) {
637 DEBUG(0,("wait_for_aio_completion: aio_suspend timed out waiting for %d events after a wait of %d seconds\n",
638 aio_completion_count
, seconds_left
));
640 cancel_aio_by_fsp(fsp
);
641 SAFE_FREE(aiocb_list
);
642 return ret
? ret
: EIO
;
645 /* One or more events might have completed - process them if so. */
646 for( i
= 0; i
< aio_completion_count
; i
++) {
647 uint16 mid
= *(uint16
*)aiocb_list
[i
]->aio_sigevent
.sigev_value
.sival_ptr
;
649 aio_ex
= find_aio_ex(mid
);
651 if (!handle_aio_completed(aio_ex
, &err
)) {
654 delete_aio_ex(aio_ex
);
657 SAFE_FREE(aiocb_list
);
658 seconds_left
= SMB_TIME_FOR_AIO_COMPLETE_WAIT
- (time(NULL
) - start_time
);
661 /* We timed out - we don't know why. Return ret if already an error, else EIO. */
662 DEBUG(10,("wait_for_aio_completion: aio_suspend timed out waiting for %d events\n",
663 aio_completion_count
));
665 return ret
? ret
: EIO
;
668 /****************************************************************************
669 Cancel any outstanding aio requests. The client doesn't care about the reply.
670 *****************************************************************************/
672 void cancel_aio_by_fsp(files_struct
*fsp
)
674 struct aio_extra
*aio_ex
;
676 for( aio_ex
= aio_list_head
; aio_ex
; aio_ex
= aio_ex
->next
) {
677 if (aio_ex
->fsp
== fsp
) {
678 /* Don't delete the aio_extra record as we may have completed
679 and don't yet know it. Just do the aio_cancel call and return. */
680 SMB_VFS_AIO_CANCEL(fsp
,fsp
->fh
->fd
, &aio_ex
->acb
);
681 aio_ex
->fsp
= NULL
; /* fsp will be closed when we return. */
686 /****************************************************************************
687 Check if a buffer was stolen for aio use.
688 *****************************************************************************/
690 BOOL
aio_inbuffer_in_use(char *inbuf
)
692 struct aio_extra
*aio_ex
;
694 for( aio_ex
= aio_list_head
; aio_ex
; aio_ex
= aio_ex
->next
) {
695 if (aio_ex
->inbuf
== inbuf
) {
702 BOOL
aio_finished(void)
707 void initialize_async_io_handler(void)
711 int process_aio_queue(void)
716 BOOL
schedule_aio_read_and_X(connection_struct
*conn
,
717 char *inbuf
, char *outbuf
,
718 int length
, int len_outbuf
,
719 files_struct
*fsp
, SMB_OFF_T startpos
,
725 BOOL
schedule_aio_write_and_X(connection_struct
*conn
,
726 char *inbuf
, char *outbuf
,
727 int length
, int len_outbuf
,
728 files_struct
*fsp
, char *data
,
735 void cancel_aio_by_fsp(files_struct
*fsp
)
739 BOOL
wait_for_aio_completion(files_struct
*fsp
)
744 BOOL
aio_inbuffer_in_use(char *ptr
)