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/smbd.h"
23 #include "smbd/globals.h"
24 #include "../lib/util/tevent_ntstatus.h"
25 #include "../lib/util/tevent_unix.h"
26 #include "lib/tevent_wait.h"
28 /****************************************************************************
29 The buffer we keep around whilst an aio request is in process.
30 *****************************************************************************/
34 struct smb_request *smbreq;
36 struct lock_struct lock;
42 /****************************************************************************
43 Accessor function to return write_through state.
44 *****************************************************************************/
46 bool aio_write_through_requested(struct aio_extra *aio_ex)
48 return aio_ex->write_through;
51 /****************************************************************************
52 Create the extended aio struct we must keep around for the lifetime
54 *****************************************************************************/
56 static struct aio_extra *create_aio_extra(TALLOC_CTX *mem_ctx,
60 struct aio_extra *aio_ex = talloc_zero(mem_ctx, struct aio_extra);
66 /* The output buffer stored in the aio_ex is the start of
67 the smb return buffer. The buffer used in the acb
68 is the start of the reply data portion of that buffer. */
71 aio_ex->outbuf = data_blob_talloc(aio_ex, NULL, buflen);
72 if (!aio_ex->outbuf.data) {
81 struct aio_req_fsp_link {
83 struct tevent_req *req;
86 static int aio_del_req_from_fsp(struct aio_req_fsp_link *lnk)
89 files_struct *fsp = lnk->fsp;
90 struct tevent_req *req = lnk->req;
92 for (i=0; i<fsp->num_aio_requests; i++) {
93 if (fsp->aio_requests[i] == req) {
97 if (i == fsp->num_aio_requests) {
98 DEBUG(1, ("req %p not found in fsp %p\n", req, fsp));
101 fsp->num_aio_requests -= 1;
102 fsp->aio_requests[i] = fsp->aio_requests[fsp->num_aio_requests];
104 if (fsp->num_aio_requests == 0) {
105 tevent_wait_done(fsp->deferred_close);
110 bool aio_add_req_to_fsp(files_struct *fsp, struct tevent_req *req)
113 struct aio_req_fsp_link *lnk;
115 lnk = talloc(req, struct aio_req_fsp_link);
120 array_len = talloc_array_length(fsp->aio_requests);
121 if (array_len <= fsp->num_aio_requests) {
122 struct tevent_req **tmp;
124 tmp = talloc_realloc(
125 fsp, fsp->aio_requests, struct tevent_req *,
126 fsp->num_aio_requests+1);
131 fsp->aio_requests = tmp;
133 fsp->aio_requests[fsp->num_aio_requests] = req;
134 fsp->num_aio_requests += 1;
138 talloc_set_destructor(lnk, aio_del_req_from_fsp);
143 static void aio_pread_smb1_done(struct tevent_req *req);
145 /****************************************************************************
146 Set up an aio request from a SMBreadX call.
147 *****************************************************************************/
149 NTSTATUS schedule_aio_read_and_X(connection_struct *conn,
150 struct smb_request *smbreq,
151 files_struct *fsp, off_t startpos,
154 struct aio_extra *aio_ex;
156 size_t min_aio_read_size = lp_aio_read_size(SNUM(conn));
157 struct tevent_req *req;
159 if (fsp->base_fsp != NULL) {
160 /* No AIO on streams yet */
161 DEBUG(10, ("AIO on streams not yet supported\n"));
162 return NT_STATUS_RETRY;
165 if ((!min_aio_read_size || (smb_maxcnt < min_aio_read_size))
166 && !SMB_VFS_AIO_FORCE(fsp)) {
167 /* Too small a read for aio request. */
168 DEBUG(10,("schedule_aio_read_and_X: read size (%u) too small "
169 "for minimum aio_read of %u\n",
170 (unsigned int)smb_maxcnt,
171 (unsigned int)min_aio_read_size ));
172 return NT_STATUS_RETRY;
175 /* Only do this on non-chained and non-chaining reads not using the
177 if (req_is_in_chain(smbreq) || (lp_write_cache_size(SNUM(conn)) != 0)) {
178 return NT_STATUS_RETRY;
181 /* The following is safe from integer wrap as we've already checked
182 smb_maxcnt is 128k or less. Wct is 12 for read replies */
184 bufsize = smb_size + 12 * 2 + smb_maxcnt + 1 /* padding byte */;
186 if ((aio_ex = create_aio_extra(NULL, fsp, bufsize)) == NULL) {
187 DEBUG(10,("schedule_aio_read_and_X: malloc fail.\n"));
188 return NT_STATUS_NO_MEMORY;
191 construct_reply_common_req(smbreq, (char *)aio_ex->outbuf.data);
192 srv_set_message((char *)aio_ex->outbuf.data, 12, 0, True);
193 SCVAL(aio_ex->outbuf.data,smb_vwv0,0xFF); /* Never a chained reply. */
194 SCVAL(smb_buf(aio_ex->outbuf.data), 0, 0); /* padding byte */
196 init_strict_lock_struct(fsp, (uint64_t)smbreq->smbpid,
197 (uint64_t)startpos, (uint64_t)smb_maxcnt, READ_LOCK,
200 /* Take the lock until the AIO completes. */
201 if (!SMB_VFS_STRICT_LOCK_CHECK(conn, fsp, &aio_ex->lock)) {
203 return NT_STATUS_FILE_LOCK_CONFLICT;
206 aio_ex->nbyte = smb_maxcnt;
207 aio_ex->offset = startpos;
209 req = SMB_VFS_PREAD_SEND(aio_ex, fsp->conn->sconn->ev_ctx,
211 smb_buf(aio_ex->outbuf.data) + 1 /* pad */,
212 smb_maxcnt, startpos);
214 DEBUG(0,("schedule_aio_read_and_X: aio_read failed. "
215 "Error %s\n", strerror(errno) ));
217 return NT_STATUS_RETRY;
219 tevent_req_set_callback(req, aio_pread_smb1_done, aio_ex);
221 if (!aio_add_req_to_fsp(fsp, req)) {
222 DEBUG(1, ("Could not add req to fsp\n"));
224 return NT_STATUS_RETRY;
227 aio_ex->smbreq = talloc_move(aio_ex, &smbreq);
229 DEBUG(10,("schedule_aio_read_and_X: scheduled aio_read for file %s, "
230 "offset %.0f, len = %u (mid = %u)\n",
231 fsp_str_dbg(fsp), (double)startpos, (unsigned int)smb_maxcnt,
232 (unsigned int)aio_ex->smbreq->mid ));
237 static void aio_pread_smb1_done(struct tevent_req *req)
239 struct aio_extra *aio_ex = tevent_req_callback_data(
240 req, struct aio_extra);
241 files_struct *fsp = aio_ex->fsp;
243 char *outbuf = (char *)aio_ex->outbuf.data;
245 struct vfs_aio_state vfs_aio_state;
247 nread = SMB_VFS_PREAD_RECV(req, &vfs_aio_state);
250 DEBUG(10, ("pread_recv returned %d, err = %s\n", (int)nread,
251 (nread == -1) ? strerror(vfs_aio_state.error) : "no error"));
254 DEBUG( 3, ("aio_pread_smb1_done: file closed whilst "
255 "aio outstanding (mid[%llu]).\n",
256 (unsigned long long)aio_ex->smbreq->mid));
262 DEBUG( 3, ("handle_aio_read_complete: file %s nread == %d. "
263 "Error = %s\n", fsp_str_dbg(fsp), (int)nread,
264 strerror(vfs_aio_state.error)));
266 ERROR_NT(map_nt_error_from_unix(vfs_aio_state.error));
267 outsize = srv_set_message(outbuf,0,0,true);
269 outsize = setup_readX_header(outbuf, nread);
271 aio_ex->fsp->fh->pos = aio_ex->offset + nread;
272 aio_ex->fsp->fh->position_information = aio_ex->fsp->fh->pos;
274 DEBUG( 3, ("handle_aio_read_complete file %s max=%d "
275 "nread=%d\n", fsp_str_dbg(fsp),
276 (int)aio_ex->nbyte, (int)nread ) );
281 DBG_INFO("Invalid outsize (%zu)\n", outsize);
286 _smb_setlen_large(outbuf, outsize);
289 if (!srv_send_smb(aio_ex->smbreq->xconn, outbuf,
290 true, aio_ex->smbreq->seqnum+1,
291 IS_CONN_ENCRYPTED(fsp->conn), NULL)) {
292 exit_server_cleanly("handle_aio_read_complete: srv_send_smb "
296 DEBUG(10, ("handle_aio_read_complete: scheduled aio_read completed "
297 "for file %s, offset %.0f, len = %u\n",
298 fsp_str_dbg(fsp), (double)aio_ex->offset,
299 (unsigned int)nread));
304 struct pwrite_fsync_state {
305 struct tevent_context *ev;
311 static void pwrite_fsync_write_done(struct tevent_req *subreq);
312 static void pwrite_fsync_sync_done(struct tevent_req *subreq);
314 static struct tevent_req *pwrite_fsync_send(TALLOC_CTX *mem_ctx,
315 struct tevent_context *ev,
316 struct files_struct *fsp,
318 size_t n, off_t offset,
321 struct tevent_req *req, *subreq;
322 struct pwrite_fsync_state *state;
324 req = tevent_req_create(mem_ctx, &state, struct pwrite_fsync_state);
330 state->write_through = write_through;
332 subreq = SMB_VFS_PWRITE_SEND(state, ev, fsp, data, n, offset);
333 if (tevent_req_nomem(subreq, req)) {
334 return tevent_req_post(req, ev);
336 tevent_req_set_callback(subreq, pwrite_fsync_write_done, req);
340 static void pwrite_fsync_write_done(struct tevent_req *subreq)
342 struct tevent_req *req = tevent_req_callback_data(
343 subreq, struct tevent_req);
344 struct pwrite_fsync_state *state = tevent_req_data(
345 req, struct pwrite_fsync_state);
346 connection_struct *conn = state->fsp->conn;
348 struct vfs_aio_state vfs_aio_state;
350 state->nwritten = SMB_VFS_PWRITE_RECV(subreq, &vfs_aio_state);
352 if (state->nwritten == -1) {
353 tevent_req_error(req, vfs_aio_state.error);
357 do_sync = (lp_strict_sync(SNUM(conn)) &&
358 (lp_sync_always(SNUM(conn)) || state->write_through));
360 tevent_req_done(req);
364 subreq = SMB_VFS_FSYNC_SEND(state, state->ev, state->fsp);
365 if (tevent_req_nomem(subreq, req)) {
368 tevent_req_set_callback(subreq, pwrite_fsync_sync_done, req);
371 static void pwrite_fsync_sync_done(struct tevent_req *subreq)
373 struct tevent_req *req = tevent_req_callback_data(
374 subreq, struct tevent_req);
376 struct vfs_aio_state vfs_aio_state;
378 ret = SMB_VFS_FSYNC_RECV(subreq, &vfs_aio_state);
381 tevent_req_error(req, vfs_aio_state.error);
384 tevent_req_done(req);
387 static ssize_t pwrite_fsync_recv(struct tevent_req *req, int *perr)
389 struct pwrite_fsync_state *state = tevent_req_data(
390 req, struct pwrite_fsync_state);
392 if (tevent_req_is_unix_error(req, perr)) {
395 return state->nwritten;
398 static void aio_pwrite_smb1_done(struct tevent_req *req);
400 /****************************************************************************
401 Set up an aio request from a SMBwriteX call.
402 *****************************************************************************/
404 NTSTATUS schedule_aio_write_and_X(connection_struct *conn,
405 struct smb_request *smbreq,
406 files_struct *fsp, const char *data,
410 struct aio_extra *aio_ex;
412 size_t min_aio_write_size = lp_aio_write_size(SNUM(conn));
413 struct tevent_req *req;
415 if (fsp->base_fsp != NULL) {
416 /* No AIO on streams yet */
417 DEBUG(10, ("AIO on streams not yet supported\n"));
418 return NT_STATUS_RETRY;
421 if ((!min_aio_write_size || (numtowrite < min_aio_write_size))
422 && !SMB_VFS_AIO_FORCE(fsp)) {
423 /* Too small a write for aio request. */
424 DEBUG(10,("schedule_aio_write_and_X: write size (%u) too "
425 "small for minimum aio_write of %u\n",
426 (unsigned int)numtowrite,
427 (unsigned int)min_aio_write_size ));
428 return NT_STATUS_RETRY;
431 /* Only do this on non-chained and non-chaining writes not using the
433 if (req_is_in_chain(smbreq) || (lp_write_cache_size(SNUM(conn)) != 0)) {
434 return NT_STATUS_RETRY;
437 bufsize = smb_size + 6*2;
439 if (!(aio_ex = create_aio_extra(NULL, fsp, bufsize))) {
440 DEBUG(0,("schedule_aio_write_and_X: malloc fail.\n"));
441 return NT_STATUS_NO_MEMORY;
443 aio_ex->write_through = BITSETW(smbreq->vwv+7,0);
445 construct_reply_common_req(smbreq, (char *)aio_ex->outbuf.data);
446 srv_set_message((char *)aio_ex->outbuf.data, 6, 0, True);
447 SCVAL(aio_ex->outbuf.data,smb_vwv0,0xFF); /* Never a chained reply. */
449 init_strict_lock_struct(fsp, (uint64_t)smbreq->smbpid,
450 (uint64_t)startpos, (uint64_t)numtowrite, WRITE_LOCK,
453 /* Take the lock until the AIO completes. */
454 if (!SMB_VFS_STRICT_LOCK_CHECK(conn, fsp, &aio_ex->lock)) {
456 return NT_STATUS_FILE_LOCK_CONFLICT;
459 aio_ex->nbyte = numtowrite;
460 aio_ex->offset = startpos;
462 req = pwrite_fsync_send(aio_ex, fsp->conn->sconn->ev_ctx, fsp,
463 data, numtowrite, startpos,
464 aio_ex->write_through);
466 DEBUG(3,("schedule_aio_wrote_and_X: aio_write failed. "
467 "Error %s\n", strerror(errno) ));
469 return NT_STATUS_RETRY;
471 tevent_req_set_callback(req, aio_pwrite_smb1_done, aio_ex);
473 if (!aio_add_req_to_fsp(fsp, req)) {
474 DEBUG(1, ("Could not add req to fsp\n"));
476 return NT_STATUS_RETRY;
479 aio_ex->smbreq = talloc_move(aio_ex, &smbreq);
481 /* This should actually be improved to span the write. */
482 contend_level2_oplocks_begin(fsp, LEVEL2_CONTEND_WRITE);
483 contend_level2_oplocks_end(fsp, LEVEL2_CONTEND_WRITE);
485 if (!aio_ex->write_through && !lp_sync_always(SNUM(fsp->conn))
486 && fsp->aio_write_behind) {
487 /* Lie to the client and immediately claim we finished the
489 SSVAL(aio_ex->outbuf.data,smb_vwv2,numtowrite);
490 SSVAL(aio_ex->outbuf.data,smb_vwv4,(numtowrite>>16)&1);
491 show_msg((char *)aio_ex->outbuf.data);
492 if (!srv_send_smb(aio_ex->smbreq->xconn,
493 (char *)aio_ex->outbuf.data,
494 true, aio_ex->smbreq->seqnum+1,
495 IS_CONN_ENCRYPTED(fsp->conn),
496 &aio_ex->smbreq->pcd)) {
497 exit_server_cleanly("schedule_aio_write_and_X: "
498 "srv_send_smb failed.");
500 DEBUG(10,("schedule_aio_write_and_X: scheduled aio_write "
501 "behind for file %s\n", fsp_str_dbg(fsp)));
504 DEBUG(10,("schedule_aio_write_and_X: scheduled aio_write for file "
505 "%s, offset %.0f, len = %u (mid = %u)\n",
506 fsp_str_dbg(fsp), (double)startpos, (unsigned int)numtowrite,
507 (unsigned int)aio_ex->smbreq->mid));
512 static void aio_pwrite_smb1_done(struct tevent_req *req)
514 struct aio_extra *aio_ex = tevent_req_callback_data(
515 req, struct aio_extra);
516 files_struct *fsp = aio_ex->fsp;
517 char *outbuf = (char *)aio_ex->outbuf.data;
518 ssize_t numtowrite = aio_ex->nbyte;
522 nwritten = pwrite_fsync_recv(req, &err);
525 DEBUG(10, ("pwrite_recv returned %d, err = %s\n", (int)nwritten,
526 (nwritten == -1) ? strerror(err) : "no error"));
529 DEBUG( 3, ("aio_pwrite_smb1_done: file closed whilst "
530 "aio outstanding (mid[%llu]).\n",
531 (unsigned long long)aio_ex->smbreq->mid));
536 mark_file_modified(fsp);
538 if (fsp->aio_write_behind) {
540 if (nwritten != numtowrite) {
541 if (nwritten == -1) {
542 DEBUG(5,("handle_aio_write_complete: "
543 "aio_write_behind failed ! File %s "
544 "is corrupt ! Error %s\n",
545 fsp_str_dbg(fsp), strerror(err)));
547 DEBUG(0,("handle_aio_write_complete: "
548 "aio_write_behind failed ! File %s "
549 "is corrupt ! Wanted %u bytes but "
550 "only wrote %d\n", fsp_str_dbg(fsp),
551 (unsigned int)numtowrite,
555 DEBUG(10,("handle_aio_write_complete: "
556 "aio_write_behind completed for file %s\n",
559 /* TODO: should no return success in case of an error !!! */
564 /* We don't need outsize or set_message here as we've already set the
565 fixed size length when we set up the aio call. */
567 if (nwritten == -1) {
568 DEBUG(3, ("handle_aio_write: file %s wanted %u bytes. "
569 "nwritten == %d. Error = %s\n",
570 fsp_str_dbg(fsp), (unsigned int)numtowrite,
571 (int)nwritten, strerror(err)));
573 ERROR_NT(map_nt_error_from_unix(err));
574 srv_set_message(outbuf,0,0,true);
576 SSVAL(outbuf,smb_vwv2,nwritten);
577 SSVAL(outbuf,smb_vwv4,(nwritten>>16)&1);
578 if (nwritten < (ssize_t)numtowrite) {
579 SCVAL(outbuf,smb_rcls,ERRHRD);
580 SSVAL(outbuf,smb_err,ERRdiskfull);
583 DEBUG(3,("handle_aio_write: %s, num=%d wrote=%d\n",
584 fsp_fnum_dbg(fsp), (int)numtowrite, (int)nwritten));
586 aio_ex->fsp->fh->pos = aio_ex->offset + nwritten;
590 if (!srv_send_smb(aio_ex->smbreq->xconn, outbuf,
591 true, aio_ex->smbreq->seqnum+1,
592 IS_CONN_ENCRYPTED(fsp->conn),
594 exit_server_cleanly("handle_aio_write_complete: "
595 "srv_send_smb failed.");
598 DEBUG(10, ("handle_aio_write_complete: scheduled aio_write completed "
599 "for file %s, offset %.0f, requested %u, written = %u\n",
600 fsp_str_dbg(fsp), (double)aio_ex->offset,
601 (unsigned int)numtowrite, (unsigned int)nwritten));
606 bool cancel_smb2_aio(struct smb_request *smbreq)
608 struct smbd_smb2_request *smb2req = smbreq->smb2req;
609 struct aio_extra *aio_ex = NULL;
612 aio_ex = talloc_get_type(smbreq->async_priv,
616 if (aio_ex == NULL) {
620 if (aio_ex->fsp == NULL) {
625 * We let the aio request run. Setting fsp to NULL has the
626 * effect that the _done routines don't send anything out.
633 static void aio_pread_smb2_done(struct tevent_req *req);
635 /****************************************************************************
636 Set up an aio request from a SMB2 read call.
637 *****************************************************************************/
639 NTSTATUS schedule_smb2_aio_read(connection_struct *conn,
640 struct smb_request *smbreq,
647 struct aio_extra *aio_ex;
648 size_t min_aio_read_size = lp_aio_read_size(SNUM(conn));
649 struct tevent_req *req;
651 if (fsp->base_fsp != NULL) {
652 /* No AIO on streams yet */
653 DEBUG(10, ("AIO on streams not yet supported\n"));
654 return NT_STATUS_RETRY;
657 if (fsp->op == NULL) {
658 /* No AIO on internal opens. */
659 return NT_STATUS_RETRY;
662 if ((!min_aio_read_size || (smb_maxcnt < min_aio_read_size))
663 && !SMB_VFS_AIO_FORCE(fsp)) {
664 /* Too small a read for aio request. */
665 DEBUG(10,("smb2: read size (%u) too small "
666 "for minimum aio_read of %u\n",
667 (unsigned int)smb_maxcnt,
668 (unsigned int)min_aio_read_size ));
669 return NT_STATUS_RETRY;
672 /* Only do this on reads not using the write cache. */
673 if (lp_write_cache_size(SNUM(conn)) != 0) {
674 return NT_STATUS_RETRY;
677 if (smbd_smb2_is_compound(smbreq->smb2req)) {
678 return NT_STATUS_RETRY;
681 /* Create the out buffer. */
682 *preadbuf = data_blob_talloc(ctx, NULL, smb_maxcnt);
683 if (preadbuf->data == NULL) {
684 return NT_STATUS_NO_MEMORY;
687 if (!(aio_ex = create_aio_extra(smbreq->smb2req, fsp, 0))) {
688 return NT_STATUS_NO_MEMORY;
691 init_strict_lock_struct(fsp, fsp->op->global->open_persistent_id,
692 (uint64_t)startpos, (uint64_t)smb_maxcnt, READ_LOCK,
695 /* Take the lock until the AIO completes. */
696 if (!SMB_VFS_STRICT_LOCK_CHECK(conn, fsp, &aio_ex->lock)) {
698 return NT_STATUS_FILE_LOCK_CONFLICT;
701 aio_ex->nbyte = smb_maxcnt;
702 aio_ex->offset = startpos;
704 req = SMB_VFS_PREAD_SEND(aio_ex, fsp->conn->sconn->ev_ctx, fsp,
705 preadbuf->data, smb_maxcnt, startpos);
707 DEBUG(0, ("smb2: SMB_VFS_PREAD_SEND failed. "
708 "Error %s\n", strerror(errno)));
710 return NT_STATUS_RETRY;
712 tevent_req_set_callback(req, aio_pread_smb2_done, aio_ex);
714 if (!aio_add_req_to_fsp(fsp, req)) {
715 DEBUG(1, ("Could not add req to fsp\n"));
717 return NT_STATUS_RETRY;
720 /* We don't need talloc_move here as both aio_ex and
721 * smbreq are children of smbreq->smb2req. */
722 aio_ex->smbreq = smbreq;
723 smbreq->async_priv = aio_ex;
725 DEBUG(10,("smb2: scheduled aio_read for file %s, "
726 "offset %.0f, len = %u (mid = %u)\n",
727 fsp_str_dbg(fsp), (double)startpos, (unsigned int)smb_maxcnt,
728 (unsigned int)aio_ex->smbreq->mid ));
733 static void aio_pread_smb2_done(struct tevent_req *req)
735 struct aio_extra *aio_ex = tevent_req_callback_data(
736 req, struct aio_extra);
737 struct tevent_req *subreq = aio_ex->smbreq->smb2req->subreq;
738 files_struct *fsp = aio_ex->fsp;
741 struct vfs_aio_state vfs_aio_state = { 0 };
743 nread = SMB_VFS_PREAD_RECV(req, &vfs_aio_state);
746 DEBUG(10, ("pread_recv returned %d, err = %s\n", (int)nread,
747 (nread == -1) ? strerror(vfs_aio_state.error) : "no error"));
750 DEBUG(3, ("%s: request cancelled (mid[%ju])\n",
751 __func__, (uintmax_t)aio_ex->smbreq->mid));
753 tevent_req_nterror(subreq, NT_STATUS_INTERNAL_ERROR);
757 /* Common error or success code processing for async or sync
760 status = smb2_read_complete(subreq, nread, vfs_aio_state.error);
763 fsp->fh->pos = aio_ex->offset + nread;
764 fsp->fh->position_information = fsp->fh->pos;
767 DEBUG(10, ("smb2: scheduled aio_read completed "
768 "for file %s, offset %.0f, len = %u "
769 "(errcode = %d, NTSTATUS = %s)\n",
770 fsp_str_dbg(aio_ex->fsp),
771 (double)aio_ex->offset,
773 vfs_aio_state.error, nt_errstr(status)));
775 if (!NT_STATUS_IS_OK(status)) {
776 tevent_req_nterror(subreq, status);
779 tevent_req_done(subreq);
782 static void aio_pwrite_smb2_done(struct tevent_req *req);
784 /****************************************************************************
785 Set up an aio request from a SMB2write call.
786 *****************************************************************************/
788 NTSTATUS schedule_aio_smb2_write(connection_struct *conn,
789 struct smb_request *smbreq,
795 struct aio_extra *aio_ex = NULL;
796 size_t min_aio_write_size = lp_aio_write_size(SNUM(conn));
797 struct tevent_req *req;
799 if (fsp->base_fsp != NULL) {
800 /* No AIO on streams yet */
801 DEBUG(10, ("AIO on streams not yet supported\n"));
802 return NT_STATUS_RETRY;
805 if (fsp->op == NULL) {
806 /* No AIO on internal opens. */
807 return NT_STATUS_RETRY;
810 if ((!min_aio_write_size || (in_data.length < min_aio_write_size))
811 && !SMB_VFS_AIO_FORCE(fsp)) {
812 /* Too small a write for aio request. */
813 DEBUG(10,("smb2: write size (%u) too "
814 "small for minimum aio_write of %u\n",
815 (unsigned int)in_data.length,
816 (unsigned int)min_aio_write_size ));
817 return NT_STATUS_RETRY;
820 /* Only do this on writes not using the write cache. */
821 if (lp_write_cache_size(SNUM(conn)) != 0) {
822 return NT_STATUS_RETRY;
825 if (smbd_smb2_is_compound(smbreq->smb2req)) {
826 return NT_STATUS_RETRY;
829 if (smbreq->unread_bytes) {
830 /* Can't do async with recvfile. */
831 return NT_STATUS_RETRY;
834 if (!(aio_ex = create_aio_extra(smbreq->smb2req, fsp, 0))) {
835 return NT_STATUS_NO_MEMORY;
838 aio_ex->write_through = write_through;
840 init_strict_lock_struct(fsp, fsp->op->global->open_persistent_id,
841 in_offset, (uint64_t)in_data.length, WRITE_LOCK,
844 /* Take the lock until the AIO completes. */
845 if (!SMB_VFS_STRICT_LOCK_CHECK(conn, fsp, &aio_ex->lock)) {
847 return NT_STATUS_FILE_LOCK_CONFLICT;
850 aio_ex->nbyte = in_data.length;
851 aio_ex->offset = in_offset;
853 req = pwrite_fsync_send(aio_ex, fsp->conn->sconn->ev_ctx, fsp,
854 in_data.data, in_data.length, in_offset,
857 DEBUG(3, ("smb2: SMB_VFS_PWRITE_SEND failed. "
858 "Error %s\n", strerror(errno)));
860 return NT_STATUS_RETRY;
862 tevent_req_set_callback(req, aio_pwrite_smb2_done, aio_ex);
864 if (!aio_add_req_to_fsp(fsp, req)) {
865 DEBUG(1, ("Could not add req to fsp\n"));
867 return NT_STATUS_RETRY;
870 /* We don't need talloc_move here as both aio_ex and
871 * smbreq are children of smbreq->smb2req. */
872 aio_ex->smbreq = smbreq;
873 smbreq->async_priv = aio_ex;
875 /* This should actually be improved to span the write. */
876 contend_level2_oplocks_begin(fsp, LEVEL2_CONTEND_WRITE);
877 contend_level2_oplocks_end(fsp, LEVEL2_CONTEND_WRITE);
880 * We don't want to do write behind due to ownership
881 * issues of the request structs. Maybe add it if I
882 * figure those out. JRA.
885 DEBUG(10,("smb2: scheduled aio_write for file "
886 "%s, offset %.0f, len = %u (mid = %u)\n",
889 (unsigned int)in_data.length,
890 (unsigned int)aio_ex->smbreq->mid));
895 static void aio_pwrite_smb2_done(struct tevent_req *req)
897 struct aio_extra *aio_ex = tevent_req_callback_data(
898 req, struct aio_extra);
899 ssize_t numtowrite = aio_ex->nbyte;
900 struct tevent_req *subreq = aio_ex->smbreq->smb2req->subreq;
901 files_struct *fsp = aio_ex->fsp;
906 nwritten = pwrite_fsync_recv(req, &err);
909 DEBUG(10, ("pwrite_recv returned %d, err = %s\n", (int)nwritten,
910 (nwritten == -1) ? strerror(err) : "no error"));
913 DEBUG(3, ("%s: request cancelled (mid[%ju])\n",
914 __func__, (uintmax_t)aio_ex->smbreq->mid));
916 tevent_req_nterror(subreq, NT_STATUS_INTERNAL_ERROR);
920 mark_file_modified(fsp);
922 status = smb2_write_complete_nosync(subreq, nwritten, err);
924 DEBUG(10, ("smb2: scheduled aio_write completed "
925 "for file %s, offset %.0f, requested %u, "
926 "written = %u (errcode = %d, NTSTATUS = %s)\n",
928 (double)aio_ex->offset,
929 (unsigned int)numtowrite,
930 (unsigned int)nwritten,
931 err, nt_errstr(status)));
933 if (!NT_STATUS_IS_OK(status)) {
934 tevent_req_nterror(subreq, status);
937 tevent_req_done(subreq);