2 Unix SMB/CIFS implementation.
3 client transaction calls
4 Copyright (C) Andrew Tridgell 1994-1998
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 3 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, see <http://www.gnu.org/licenses/>.
23 /****************************************************************************
24 Send a SMB trans or trans2 request.
25 ****************************************************************************/
27 BOOL
cli_send_trans(struct cli_state
*cli
, int trans
,
28 const char *pipe_name
,
30 uint16
*setup
, unsigned int lsetup
, unsigned int msetup
,
31 const char *param
, unsigned int lparam
, unsigned int mparam
,
32 const char *data
, unsigned int ldata
, unsigned int mdata
)
35 unsigned int this_ldata
,this_lparam
;
36 unsigned int tot_data
=0,tot_param
=0;
37 char *outdata
,*outparam
;
42 this_lparam
= MIN(lparam
,cli
->max_xmit
- (500+lsetup
*2)); /* hack */
43 this_ldata
= MIN(ldata
,cli
->max_xmit
- (500+lsetup
*2+this_lparam
));
45 memset(cli
->outbuf
,'\0',smb_size
);
46 set_message(cli
->outbuf
,14+lsetup
,0,True
);
47 SCVAL(cli
->outbuf
,smb_com
,trans
);
48 SSVAL(cli
->outbuf
,smb_tid
, cli
->cnum
);
49 cli_setup_packet(cli
);
52 * Save the mid we're using. We need this for finding
59 pipe_name_len
= clistr_push(cli
, smb_buf(cli
->outbuf
), pipe_name
, -1, STR_TERMINATE
);
62 outparam
= smb_buf(cli
->outbuf
)+(trans
==SMBtrans
? pipe_name_len
: 3);
63 outdata
= outparam
+this_lparam
;
66 SSVAL(cli
->outbuf
,smb_tpscnt
,lparam
); /* tpscnt */
67 SSVAL(cli
->outbuf
,smb_tdscnt
,ldata
); /* tdscnt */
68 SSVAL(cli
->outbuf
,smb_mprcnt
,mparam
); /* mprcnt */
69 SSVAL(cli
->outbuf
,smb_mdrcnt
,mdata
); /* mdrcnt */
70 SCVAL(cli
->outbuf
,smb_msrcnt
,msetup
); /* msrcnt */
71 SSVAL(cli
->outbuf
,smb_flags
,flags
); /* flags */
72 SIVAL(cli
->outbuf
,smb_timeout
,0); /* timeout */
73 SSVAL(cli
->outbuf
,smb_pscnt
,this_lparam
); /* pscnt */
74 SSVAL(cli
->outbuf
,smb_psoff
,smb_offset(outparam
,cli
->outbuf
)); /* psoff */
75 SSVAL(cli
->outbuf
,smb_dscnt
,this_ldata
); /* dscnt */
76 SSVAL(cli
->outbuf
,smb_dsoff
,smb_offset(outdata
,cli
->outbuf
)); /* dsoff */
77 SCVAL(cli
->outbuf
,smb_suwcnt
,lsetup
); /* suwcnt */
78 for (i
=0;i
<lsetup
;i
++) /* setup[] */
79 SSVAL(cli
->outbuf
,smb_setup
+i
*2,setup
[i
]);
80 p
= smb_buf(cli
->outbuf
);
81 if (trans
!= SMBtrans
) {
82 *p
++ = 0; /* put in a null smb_name */
83 *p
++ = 'D'; *p
++ = ' '; /* observed in OS/2 */
85 if (this_lparam
) /* param[] */
86 memcpy(outparam
,param
,this_lparam
);
87 if (this_ldata
) /* data[] */
88 memcpy(outdata
,data
,this_ldata
);
89 cli_setup_bcc(cli
, outdata
+this_ldata
);
91 show_msg(cli
->outbuf
);
93 if (!cli_send_smb(cli
)) {
97 /* Note we're in a trans state. Save the sequence
98 * numbers for replies. */
99 client_set_trans_sign_state_on(cli
, mid
);
101 if (this_ldata
< ldata
|| this_lparam
< lparam
) {
102 /* receive interim response */
103 if (!cli_receive_smb(cli
) || cli_is_error(cli
)) {
104 client_set_trans_sign_state_off(cli
, mid
);
108 tot_data
= this_ldata
;
109 tot_param
= this_lparam
;
111 while (tot_data
< ldata
|| tot_param
< lparam
) {
112 this_lparam
= MIN(lparam
-tot_param
,cli
->max_xmit
- 500); /* hack */
113 this_ldata
= MIN(ldata
-tot_data
,cli
->max_xmit
- (500+this_lparam
));
115 set_message(cli
->outbuf
,trans
==SMBtrans
?8:9,0,True
);
116 SCVAL(cli
->outbuf
,smb_com
,(trans
==SMBtrans
? SMBtranss
: SMBtranss2
));
118 outparam
= smb_buf(cli
->outbuf
);
119 outdata
= outparam
+this_lparam
;
121 /* secondary request */
122 SSVAL(cli
->outbuf
,smb_tpscnt
,lparam
); /* tpscnt */
123 SSVAL(cli
->outbuf
,smb_tdscnt
,ldata
); /* tdscnt */
124 SSVAL(cli
->outbuf
,smb_spscnt
,this_lparam
); /* pscnt */
125 SSVAL(cli
->outbuf
,smb_spsoff
,smb_offset(outparam
,cli
->outbuf
)); /* psoff */
126 SSVAL(cli
->outbuf
,smb_spsdisp
,tot_param
); /* psdisp */
127 SSVAL(cli
->outbuf
,smb_sdscnt
,this_ldata
); /* dscnt */
128 SSVAL(cli
->outbuf
,smb_sdsoff
,smb_offset(outdata
,cli
->outbuf
)); /* dsoff */
129 SSVAL(cli
->outbuf
,smb_sdsdisp
,tot_data
); /* dsdisp */
130 if (trans
==SMBtrans2
)
131 SSVALS(cli
->outbuf
,smb_sfid
,fid
); /* fid */
132 if (this_lparam
) /* param[] */
133 memcpy(outparam
,param
+tot_param
,this_lparam
);
134 if (this_ldata
) /* data[] */
135 memcpy(outdata
,data
+tot_data
,this_ldata
);
136 cli_setup_bcc(cli
, outdata
+this_ldata
);
139 * Save the mid we're using. We need this for finding
144 show_msg(cli
->outbuf
);
145 if (!cli_send_smb(cli
)) {
146 client_set_trans_sign_state_off(cli
, mid
);
150 /* Ensure we use the same mid for the secondaries. */
153 tot_data
+= this_ldata
;
154 tot_param
+= this_lparam
;
161 /****************************************************************************
162 Receive a SMB trans or trans2 response allocating the necessary memory.
163 ****************************************************************************/
165 BOOL
cli_receive_trans(struct cli_state
*cli
,int trans
,
166 char **param
, unsigned int *param_len
,
167 char **data
, unsigned int *data_len
)
169 unsigned int total_data
=0;
170 unsigned int total_param
=0;
171 unsigned int this_data
,this_param
;
175 *data_len
= *param_len
= 0;
177 if (!cli_receive_smb(cli
)) {
181 show_msg(cli
->inbuf
);
184 if (CVAL(cli
->inbuf
,smb_com
) != trans
) {
185 DEBUG(0,("Expected %s response, got command 0x%02x\n",
186 trans
==SMBtrans
?"SMBtrans":"SMBtrans2",
187 CVAL(cli
->inbuf
,smb_com
)));
192 * An NT RPC pipe call can return ERRDOS, ERRmoredata
193 * to a trans call. This is not an error and should not
194 * be treated as such. Note that STATUS_NO_MORE_FILES is
195 * returned when a trans2 findfirst/next finishes.
196 * When setting up an encrypted transport we can also
197 * see NT_STATUS_MORE_PROCESSING_REQUIRED here.
199 * Vista returns NT_STATUS_INACCESSIBLE_SYSTEM_SHORTCUT if the folder
200 * "<share>/Users/All Users" is enumerated. This is a special pseudo
201 * folder, and the response does not have parameters (nor a parameter
204 status
= cli_nt_error(cli
);
206 if (!NT_STATUS_EQUAL(status
, NT_STATUS_MORE_PROCESSING_REQUIRED
)) {
207 if (NT_STATUS_IS_ERR(status
) ||
208 NT_STATUS_EQUAL(status
,STATUS_NO_MORE_FILES
) ||
209 NT_STATUS_EQUAL(status
,NT_STATUS_INACCESSIBLE_SYSTEM_SHORTCUT
)) {
214 /* parse out the lengths */
215 total_data
= SVAL(cli
->inbuf
,smb_tdrcnt
);
216 total_param
= SVAL(cli
->inbuf
,smb_tprcnt
);
220 *data
= (char *)SMB_REALLOC(*data
,total_data
);
222 DEBUG(0,("cli_receive_trans: failed to enlarge data buffer\n"));
227 if (total_param
!=0) {
228 *param
= (char *)SMB_REALLOC(*param
,total_param
);
230 DEBUG(0,("cli_receive_trans: failed to enlarge param buffer\n"));
236 this_data
= SVAL(cli
->inbuf
,smb_drcnt
);
237 this_param
= SVAL(cli
->inbuf
,smb_prcnt
);
239 if (this_data
+ *data_len
> total_data
||
240 this_param
+ *param_len
> total_param
) {
241 DEBUG(1,("Data overflow in cli_receive_trans\n"));
245 if (this_data
+ *data_len
< this_data
||
246 this_data
+ *data_len
< *data_len
||
247 this_param
+ *param_len
< this_param
||
248 this_param
+ *param_len
< *param_len
) {
249 DEBUG(1,("Data overflow in cli_receive_trans\n"));
254 unsigned int data_offset_out
= SVAL(cli
->inbuf
,smb_drdisp
);
255 unsigned int data_offset_in
= SVAL(cli
->inbuf
,smb_droff
);
257 if (data_offset_out
> total_data
||
258 data_offset_out
+ this_data
> total_data
||
259 data_offset_out
+ this_data
< data_offset_out
||
260 data_offset_out
+ this_data
< this_data
) {
261 DEBUG(1,("Data overflow in cli_receive_trans\n"));
264 if (data_offset_in
> cli
->bufsize
||
265 data_offset_in
+ this_data
> cli
->bufsize
||
266 data_offset_in
+ this_data
< data_offset_in
||
267 data_offset_in
+ this_data
< this_data
) {
268 DEBUG(1,("Data overflow in cli_receive_trans\n"));
272 memcpy(*data
+ data_offset_out
, smb_base(cli
->inbuf
) + data_offset_in
, this_data
);
275 unsigned int param_offset_out
= SVAL(cli
->inbuf
,smb_prdisp
);
276 unsigned int param_offset_in
= SVAL(cli
->inbuf
,smb_proff
);
278 if (param_offset_out
> total_param
||
279 param_offset_out
+ this_param
> total_param
||
280 param_offset_out
+ this_param
< param_offset_out
||
281 param_offset_out
+ this_param
< this_param
) {
282 DEBUG(1,("Param overflow in cli_receive_trans\n"));
285 if (param_offset_in
> cli
->bufsize
||
286 param_offset_in
+ this_param
> cli
->bufsize
||
287 param_offset_in
+ this_param
< param_offset_in
||
288 param_offset_in
+ this_param
< this_param
) {
289 DEBUG(1,("Param overflow in cli_receive_trans\n"));
293 memcpy(*param
+ param_offset_out
, smb_base(cli
->inbuf
) + param_offset_in
, this_param
);
295 *data_len
+= this_data
;
296 *param_len
+= this_param
;
298 if (total_data
<= *data_len
&& total_param
<= *param_len
) {
303 if (!cli_receive_smb(cli
)) {
307 show_msg(cli
->inbuf
);
310 if (CVAL(cli
->inbuf
,smb_com
) != trans
) {
311 DEBUG(0,("Expected %s response, got command 0x%02x\n",
312 trans
==SMBtrans
?"SMBtrans":"SMBtrans2",
313 CVAL(cli
->inbuf
,smb_com
)));
316 if (!NT_STATUS_EQUAL(status
, NT_STATUS_MORE_PROCESSING_REQUIRED
)) {
317 if (NT_STATUS_IS_ERR(cli_nt_error(cli
))) {
322 /* parse out the total lengths again - they can shrink! */
323 if (SVAL(cli
->inbuf
,smb_tdrcnt
) < total_data
)
324 total_data
= SVAL(cli
->inbuf
,smb_tdrcnt
);
325 if (SVAL(cli
->inbuf
,smb_tprcnt
) < total_param
)
326 total_param
= SVAL(cli
->inbuf
,smb_tprcnt
);
328 if (total_data
<= *data_len
&& total_param
<= *param_len
) {
336 client_set_trans_sign_state_off(cli
, SVAL(cli
->inbuf
,smb_mid
));
340 /****************************************************************************
341 Send a SMB nttrans request.
342 ****************************************************************************/
344 BOOL
cli_send_nt_trans(struct cli_state
*cli
,
347 uint16
*setup
, unsigned int lsetup
, unsigned int msetup
,
348 char *param
, unsigned int lparam
, unsigned int mparam
,
349 char *data
, unsigned int ldata
, unsigned int mdata
)
352 unsigned int this_ldata
,this_lparam
;
353 unsigned int tot_data
=0,tot_param
=0;
355 char *outdata
,*outparam
;
357 this_lparam
= MIN(lparam
,cli
->max_xmit
- (500+lsetup
*2)); /* hack */
358 this_ldata
= MIN(ldata
,cli
->max_xmit
- (500+lsetup
*2+this_lparam
));
360 memset(cli
->outbuf
,'\0',smb_size
);
361 set_message(cli
->outbuf
,19+lsetup
,0,True
);
362 SCVAL(cli
->outbuf
,smb_com
,SMBnttrans
);
363 SSVAL(cli
->outbuf
,smb_tid
, cli
->cnum
);
364 cli_setup_packet(cli
);
367 * Save the mid we're using. We need this for finding
373 outparam
= smb_buf(cli
->outbuf
)+3;
374 outdata
= outparam
+this_lparam
;
376 /* primary request */
377 SCVAL(cli
->outbuf
,smb_nt_MaxSetupCount
,msetup
);
378 SCVAL(cli
->outbuf
,smb_nt_Flags
,flags
);
379 SIVAL(cli
->outbuf
,smb_nt_TotalParameterCount
, lparam
);
380 SIVAL(cli
->outbuf
,smb_nt_TotalDataCount
, ldata
);
381 SIVAL(cli
->outbuf
,smb_nt_MaxParameterCount
, mparam
);
382 SIVAL(cli
->outbuf
,smb_nt_MaxDataCount
, mdata
);
383 SIVAL(cli
->outbuf
,smb_nt_ParameterCount
, this_lparam
);
384 SIVAL(cli
->outbuf
,smb_nt_ParameterOffset
, smb_offset(outparam
,cli
->outbuf
));
385 SIVAL(cli
->outbuf
,smb_nt_DataCount
, this_ldata
);
386 SIVAL(cli
->outbuf
,smb_nt_DataOffset
, smb_offset(outdata
,cli
->outbuf
));
387 SIVAL(cli
->outbuf
,smb_nt_SetupCount
, lsetup
);
388 SIVAL(cli
->outbuf
,smb_nt_Function
, function
);
389 for (i
=0;i
<lsetup
;i
++) /* setup[] */
390 SSVAL(cli
->outbuf
,smb_nt_SetupStart
+i
*2,setup
[i
]);
392 if (this_lparam
) /* param[] */
393 memcpy(outparam
,param
,this_lparam
);
394 if (this_ldata
) /* data[] */
395 memcpy(outdata
,data
,this_ldata
);
397 cli_setup_bcc(cli
, outdata
+this_ldata
);
399 show_msg(cli
->outbuf
);
400 if (!cli_send_smb(cli
)) {
404 /* Note we're in a trans state. Save the sequence
405 * numbers for replies. */
406 client_set_trans_sign_state_on(cli
, mid
);
408 if (this_ldata
< ldata
|| this_lparam
< lparam
) {
409 /* receive interim response */
410 if (!cli_receive_smb(cli
) || cli_is_error(cli
)) {
411 client_set_trans_sign_state_off(cli
, mid
);
415 tot_data
= this_ldata
;
416 tot_param
= this_lparam
;
418 while (tot_data
< ldata
|| tot_param
< lparam
) {
419 this_lparam
= MIN(lparam
-tot_param
,cli
->max_xmit
- 500); /* hack */
420 this_ldata
= MIN(ldata
-tot_data
,cli
->max_xmit
- (500+this_lparam
));
422 set_message(cli
->outbuf
,18,0,True
);
423 SCVAL(cli
->outbuf
,smb_com
,SMBnttranss
);
425 /* XXX - these should probably be aligned */
426 outparam
= smb_buf(cli
->outbuf
);
427 outdata
= outparam
+this_lparam
;
429 /* secondary request */
430 SIVAL(cli
->outbuf
,smb_nts_TotalParameterCount
,lparam
);
431 SIVAL(cli
->outbuf
,smb_nts_TotalDataCount
,ldata
);
432 SIVAL(cli
->outbuf
,smb_nts_ParameterCount
,this_lparam
);
433 SIVAL(cli
->outbuf
,smb_nts_ParameterOffset
,smb_offset(outparam
,cli
->outbuf
));
434 SIVAL(cli
->outbuf
,smb_nts_ParameterDisplacement
,tot_param
);
435 SIVAL(cli
->outbuf
,smb_nts_DataCount
,this_ldata
);
436 SIVAL(cli
->outbuf
,smb_nts_DataOffset
,smb_offset(outdata
,cli
->outbuf
));
437 SIVAL(cli
->outbuf
,smb_nts_DataDisplacement
,tot_data
);
438 if (this_lparam
) /* param[] */
439 memcpy(outparam
,param
+tot_param
,this_lparam
);
440 if (this_ldata
) /* data[] */
441 memcpy(outdata
,data
+tot_data
,this_ldata
);
442 cli_setup_bcc(cli
, outdata
+this_ldata
);
445 * Save the mid we're using. We need this for finding
450 show_msg(cli
->outbuf
);
452 if (!cli_send_smb(cli
)) {
453 client_set_trans_sign_state_off(cli
, mid
);
457 /* Ensure we use the same mid for the secondaries. */
460 tot_data
+= this_ldata
;
461 tot_param
+= this_lparam
;
468 /****************************************************************************
469 Receive a SMB nttrans response allocating the necessary memory.
470 ****************************************************************************/
472 BOOL
cli_receive_nt_trans(struct cli_state
*cli
,
473 char **param
, unsigned int *param_len
,
474 char **data
, unsigned int *data_len
)
476 unsigned int total_data
=0;
477 unsigned int total_param
=0;
478 unsigned int this_data
,this_param
;
483 *data_len
= *param_len
= 0;
485 if (!cli_receive_smb(cli
)) {
489 show_msg(cli
->inbuf
);
492 if (CVAL(cli
->inbuf
,smb_com
) != SMBnttrans
) {
493 DEBUG(0,("Expected SMBnttrans response, got command 0x%02x\n",
494 CVAL(cli
->inbuf
,smb_com
)));
499 * An NT RPC pipe call can return ERRDOS, ERRmoredata
500 * to a trans call. This is not an error and should not
501 * be treated as such.
503 if (cli_is_dos_error(cli
)) {
504 cli_dos_error(cli
, &eclass
, &ecode
);
505 if (!(eclass
== ERRDOS
&& ecode
== ERRmoredata
)) {
511 * Likewise for NT_STATUS_BUFFER_TOO_SMALL
513 if (cli_is_nt_error(cli
)) {
514 if (!NT_STATUS_EQUAL(cli_nt_error(cli
),
515 NT_STATUS_BUFFER_TOO_SMALL
)) {
520 /* parse out the lengths */
521 total_data
= SVAL(cli
->inbuf
,smb_ntr_TotalDataCount
);
522 total_param
= SVAL(cli
->inbuf
,smb_ntr_TotalParameterCount
);
526 *data
= (char *)SMB_REALLOC(*data
,total_data
);
528 DEBUG(0,("cli_receive_nt_trans: failed to enlarge data buffer to %d\n",total_data
));
534 *param
= (char *)SMB_REALLOC(*param
,total_param
);
536 DEBUG(0,("cli_receive_nt_trans: failed to enlarge param buffer to %d\n", total_param
));
542 this_data
= SVAL(cli
->inbuf
,smb_ntr_DataCount
);
543 this_param
= SVAL(cli
->inbuf
,smb_ntr_ParameterCount
);
545 if (this_data
+ *data_len
> total_data
||
546 this_param
+ *param_len
> total_param
) {
547 DEBUG(1,("Data overflow in cli_receive_nt_trans\n"));
551 if (this_data
+ *data_len
< this_data
||
552 this_data
+ *data_len
< *data_len
||
553 this_param
+ *param_len
< this_param
||
554 this_param
+ *param_len
< *param_len
) {
555 DEBUG(1,("Data overflow in cli_receive_nt_trans\n"));
560 unsigned int data_offset_out
= SVAL(cli
->inbuf
,smb_ntr_DataDisplacement
);
561 unsigned int data_offset_in
= SVAL(cli
->inbuf
,smb_ntr_DataOffset
);
563 if (data_offset_out
> total_data
||
564 data_offset_out
+ this_data
> total_data
||
565 data_offset_out
+ this_data
< data_offset_out
||
566 data_offset_out
+ this_data
< this_data
) {
567 DEBUG(1,("Data overflow in cli_receive_nt_trans\n"));
570 if (data_offset_in
> cli
->bufsize
||
571 data_offset_in
+ this_data
> cli
->bufsize
||
572 data_offset_in
+ this_data
< data_offset_in
||
573 data_offset_in
+ this_data
< this_data
) {
574 DEBUG(1,("Data overflow in cli_receive_nt_trans\n"));
578 memcpy(*data
+ data_offset_out
, smb_base(cli
->inbuf
) + data_offset_in
, this_data
);
582 unsigned int param_offset_out
= SVAL(cli
->inbuf
,smb_ntr_ParameterDisplacement
);
583 unsigned int param_offset_in
= SVAL(cli
->inbuf
,smb_ntr_ParameterOffset
);
585 if (param_offset_out
> total_param
||
586 param_offset_out
+ this_param
> total_param
||
587 param_offset_out
+ this_param
< param_offset_out
||
588 param_offset_out
+ this_param
< this_param
) {
589 DEBUG(1,("Param overflow in cli_receive_nt_trans\n"));
592 if (param_offset_in
> cli
->bufsize
||
593 param_offset_in
+ this_param
> cli
->bufsize
||
594 param_offset_in
+ this_param
< param_offset_in
||
595 param_offset_in
+ this_param
< this_param
) {
596 DEBUG(1,("Param overflow in cli_receive_nt_trans\n"));
600 memcpy(*param
+ param_offset_out
, smb_base(cli
->inbuf
) + param_offset_in
, this_param
);
603 *data_len
+= this_data
;
604 *param_len
+= this_param
;
606 if (total_data
<= *data_len
&& total_param
<= *param_len
) {
611 if (!cli_receive_smb(cli
)) {
615 show_msg(cli
->inbuf
);
618 if (CVAL(cli
->inbuf
,smb_com
) != SMBnttrans
) {
619 DEBUG(0,("Expected SMBnttrans response, got command 0x%02x\n",
620 CVAL(cli
->inbuf
,smb_com
)));
623 if (cli_is_dos_error(cli
)) {
624 cli_dos_error(cli
, &eclass
, &ecode
);
625 if(!(eclass
== ERRDOS
&& ecode
== ERRmoredata
)) {
630 * Likewise for NT_STATUS_BUFFER_TOO_SMALL
632 if (cli_is_nt_error(cli
)) {
633 if (!NT_STATUS_EQUAL(cli_nt_error(cli
),
634 NT_STATUS_BUFFER_TOO_SMALL
)) {
639 /* parse out the total lengths again - they can shrink! */
640 if (SVAL(cli
->inbuf
,smb_ntr_TotalDataCount
) < total_data
)
641 total_data
= SVAL(cli
->inbuf
,smb_ntr_TotalDataCount
);
642 if (SVAL(cli
->inbuf
,smb_ntr_TotalParameterCount
) < total_param
)
643 total_param
= SVAL(cli
->inbuf
,smb_ntr_TotalParameterCount
);
645 if (total_data
<= *data_len
&& total_param
<= *param_len
) {
653 client_set_trans_sign_state_off(cli
, SVAL(cli
->inbuf
,smb_mid
));