2 Unix SMB/CIFS implementation.
5 Copyright (C) Stefan Metzmacher 2009
6 Copyright (C) David Disseldorp 2012
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 "../libcli/security/security.h"
27 #include "../lib/util/tevent_ntstatus.h"
28 #include "../lib/ccan/build_assert/build_assert.h"
29 #include "include/ntioctl.h"
30 #include "../librpc/ndr/libndr.h"
31 #include "librpc/gen_ndr/ndr_ioctl.h"
32 #include "smb2_ioctl_private.h"
34 #define COPYCHUNK_MAX_CHUNKS 256 /* 2k8r2 & win8 = 256 */
35 #define COPYCHUNK_MAX_CHUNK_LEN 1048576 /* 2k8r2 & win8 = 1048576 */
36 #define COPYCHUNK_MAX_TOTAL_LEN 16777216 /* 2k8r2 & win8 = 16777216 */
37 static void copychunk_pack_limits(struct srv_copychunk_rsp
*cc_rsp
)
39 cc_rsp
->chunks_written
= COPYCHUNK_MAX_CHUNKS
;
40 cc_rsp
->chunk_bytes_written
= COPYCHUNK_MAX_CHUNK_LEN
;
41 cc_rsp
->total_bytes_written
= COPYCHUNK_MAX_TOTAL_LEN
;
44 static NTSTATUS
copychunk_check_limits(struct srv_copychunk_copy
*cc_copy
)
47 uint32_t total_len
= 0;
49 if (cc_copy
->chunk_count
> COPYCHUNK_MAX_CHUNKS
) {
50 return NT_STATUS_INVALID_PARAMETER
;
53 for (i
= 0; i
< cc_copy
->chunk_count
; i
++) {
54 if (cc_copy
->chunks
[i
].length
> COPYCHUNK_MAX_CHUNK_LEN
) {
55 return NT_STATUS_INVALID_PARAMETER
;
57 total_len
+= cc_copy
->chunks
[i
].length
;
59 if (total_len
> COPYCHUNK_MAX_TOTAL_LEN
) {
60 return NT_STATUS_INVALID_PARAMETER
;
66 static void copychunk_unlock_all(struct files_struct
*src_fsp
,
67 struct files_struct
*dst_fsp
,
68 struct lock_struct
*rd_locks
,
69 struct lock_struct
*wr_locks
,
75 for (i
= 0; i
< num_locks
; i
++) {
76 SMB_VFS_STRICT_UNLOCK(src_fsp
->conn
, src_fsp
, &rd_locks
[i
]);
77 SMB_VFS_STRICT_UNLOCK(dst_fsp
->conn
, dst_fsp
, &wr_locks
[i
]);
81 /* request read and write locks for each chunk */
82 static NTSTATUS
copychunk_lock_all(TALLOC_CTX
*mem_ctx
,
83 struct srv_copychunk_copy
*cc_copy
,
84 struct files_struct
*src_fsp
,
85 struct files_struct
*dst_fsp
,
86 struct lock_struct
**rd_locks
,
87 struct lock_struct
**wr_locks
,
92 struct lock_struct
*rlocks
;
93 struct lock_struct
*wlocks
;
95 rlocks
= talloc_array(mem_ctx
, struct lock_struct
,
96 cc_copy
->chunk_count
);
98 status
= NT_STATUS_NO_MEMORY
;
102 wlocks
= talloc_array(mem_ctx
, struct lock_struct
,
103 cc_copy
->chunk_count
);
104 if (wlocks
== NULL
) {
105 status
= NT_STATUS_NO_MEMORY
;
106 goto err_rlocks_free
;
109 for (i
= 0; i
< cc_copy
->chunk_count
; i
++) {
110 init_strict_lock_struct(src_fsp
,
111 src_fsp
->op
->global
->open_persistent_id
,
112 cc_copy
->chunks
[i
].source_off
,
113 cc_copy
->chunks
[i
].length
,
116 init_strict_lock_struct(dst_fsp
,
117 dst_fsp
->op
->global
->open_persistent_id
,
118 cc_copy
->chunks
[i
].target_off
,
119 cc_copy
->chunks
[i
].length
,
123 if (!SMB_VFS_STRICT_LOCK(src_fsp
->conn
, src_fsp
, &rlocks
[i
])) {
124 status
= NT_STATUS_FILE_LOCK_CONFLICT
;
127 if (!SMB_VFS_STRICT_LOCK(dst_fsp
->conn
, dst_fsp
, &wlocks
[i
])) {
128 /* unlock last rlock, otherwise missed by cleanup */
129 SMB_VFS_STRICT_UNLOCK(src_fsp
->conn
, src_fsp
,
131 status
= NT_STATUS_FILE_LOCK_CONFLICT
;
144 /* cleanup all locks successfully issued so far */
145 copychunk_unlock_all(src_fsp
, dst_fsp
, rlocks
, wlocks
, i
);
154 struct fsctl_srv_copychunk_state
{
155 struct connection_struct
*conn
;
156 uint32_t dispatch_count
;
158 uint32_t bad_recv_count
;
161 struct files_struct
*src_fsp
;
162 struct files_struct
*dst_fsp
;
163 struct lock_struct
*wlocks
;
164 struct lock_struct
*rlocks
;
167 COPYCHUNK_OUT_EMPTY
= 0,
168 COPYCHUNK_OUT_LIMITS
,
172 static void fsctl_srv_copychunk_vfs_done(struct tevent_req
*subreq
);
174 static struct tevent_req
*fsctl_srv_copychunk_send(TALLOC_CTX
*mem_ctx
,
175 struct tevent_context
*ev
,
176 struct files_struct
*dst_fsp
,
178 struct smbd_smb2_request
*smb2req
)
180 struct tevent_req
*req
;
181 struct srv_copychunk_copy cc_copy
;
182 enum ndr_err_code ndr_ret
;
183 uint64_t src_persistent_h
;
184 uint64_t src_volatile_h
;
186 struct srv_copychunk
*chunk
;
187 struct fsctl_srv_copychunk_state
*state
;
189 req
= tevent_req_create(mem_ctx
, &state
,
190 struct fsctl_srv_copychunk_state
);
194 state
->conn
= dst_fsp
->conn
;
195 ndr_ret
= ndr_pull_struct_blob(in_input
, mem_ctx
, &cc_copy
,
196 (ndr_pull_flags_fn_t
)ndr_pull_srv_copychunk_copy
);
197 if (ndr_ret
!= NDR_ERR_SUCCESS
) {
198 DEBUG(0, ("failed to unmarshall copy chunk req\n"));
199 state
->status
= NT_STATUS_INVALID_PARAMETER
;
200 tevent_req_nterror(req
, state
->status
);
201 return tevent_req_post(req
, ev
);
204 /* persistent/volatile keys sent as the resume key */
205 src_persistent_h
= BVAL(cc_copy
.source_key
, 0);
206 src_volatile_h
= BVAL(cc_copy
.source_key
, 8);
207 state
->src_fsp
= file_fsp_get(smb2req
, src_persistent_h
, src_volatile_h
);
208 if (state
->src_fsp
== NULL
) {
209 DEBUG(3, ("invalid resume key in copy chunk req\n"));
210 state
->status
= NT_STATUS_OBJECT_NAME_NOT_FOUND
;
211 tevent_req_nterror(req
, state
->status
);
212 return tevent_req_post(req
, ev
);
215 state
->dst_fsp
= dst_fsp
;
217 * [MS-SMB2] 3.3.5.15.6 Handling a Server-Side Data Copy Request
218 * If Open.GrantedAccess of the destination file does not
219 * include FILE_WRITE_DATA, then the request MUST be failed with
220 * STATUS_ACCESS_DENIED. If Open.GrantedAccess of the
221 * destination file does not include FILE_READ_DATA access and
222 * the CtlCode is FSCTL_SRV_COPYCHUNK, then the request MUST be
223 * failed with STATUS_ACCESS_DENIED.
225 if (!CHECK_WRITE(state
->dst_fsp
)) {
226 state
->status
= NT_STATUS_ACCESS_DENIED
;
227 tevent_req_nterror(req
, state
->status
);
228 return tevent_req_post(req
, ev
);
230 if (!CHECK_READ(state
->dst_fsp
, smb2req
->smb1req
)) {
231 state
->status
= NT_STATUS_ACCESS_DENIED
;
232 tevent_req_nterror(req
, state
->status
);
233 return tevent_req_post(req
, ev
);
235 if (!CHECK_READ(state
->src_fsp
, smb2req
->smb1req
)) {
236 state
->status
= NT_STATUS_ACCESS_DENIED
;
237 tevent_req_nterror(req
, state
->status
);
238 return tevent_req_post(req
, ev
);
241 state
->status
= copychunk_check_limits(&cc_copy
);
242 if (tevent_req_nterror(req
, state
->status
)) {
243 DEBUG(3, ("copy chunk req exceeds limits\n"));
244 state
->out_data
= COPYCHUNK_OUT_LIMITS
;
245 return tevent_req_post(req
, ev
);
248 /* any errors from here onwards should carry copychunk response data */
249 state
->out_data
= COPYCHUNK_OUT_RSP
;
251 state
->status
= copychunk_lock_all(state
,
258 if (tevent_req_nterror(req
, state
->status
)) {
259 return tevent_req_post(req
, ev
);
262 for (i
= 0; i
< cc_copy
.chunk_count
; i
++) {
263 struct tevent_req
*vfs_subreq
;
264 chunk
= &cc_copy
.chunks
[i
];
265 vfs_subreq
= SMB_VFS_COPY_CHUNK_SEND(dst_fsp
->conn
,
272 if (vfs_subreq
== NULL
) {
273 DEBUG(0, ("VFS copy chunk send failed\n"));
274 state
->status
= NT_STATUS_NO_MEMORY
;
275 if (state
->dispatch_count
== 0) {
276 /* nothing dispatched, return immediately */
277 copychunk_unlock_all(state
->src_fsp
,
282 tevent_req_nterror(req
, state
->status
);
283 return tevent_req_post(req
, ev
);
286 * wait for dispatched to complete before
287 * returning error, locks held.
292 tevent_req_set_callback(vfs_subreq
,
293 fsctl_srv_copychunk_vfs_done
, req
);
294 state
->dispatch_count
++;
297 /* hold locks until all dispatched requests are completed */
301 static void fsctl_srv_copychunk_vfs_done(struct tevent_req
*subreq
)
303 struct tevent_req
*req
= tevent_req_callback_data(
304 subreq
, struct tevent_req
);
305 struct fsctl_srv_copychunk_state
*state
= tevent_req_data(req
,
306 struct fsctl_srv_copychunk_state
);
307 off_t chunk_nwritten
;
311 status
= SMB_VFS_COPY_CHUNK_RECV(state
->conn
, subreq
,
314 if (NT_STATUS_IS_OK(status
)) {
315 DEBUG(10, ("good copy chunk recv %d of %d\n",
317 state
->dispatch_count
));
318 state
->total_written
+= chunk_nwritten
;
320 DEBUG(0, ("bad status in copy chunk recv %d of %d: %s\n",
322 state
->dispatch_count
,
324 state
->bad_recv_count
++;
325 /* may overwrite previous failed status */
326 state
->status
= status
;
329 if (state
->recv_count
!= state
->dispatch_count
) {
331 * Wait for all VFS copy_chunk requests to complete, even
332 * if an error is received for a specific chunk.
337 /* all VFS copy_chunk requests done */
338 copychunk_unlock_all(state
->src_fsp
,
344 if (!tevent_req_nterror(req
, state
->status
)) {
345 tevent_req_done(req
);
349 static NTSTATUS
fsctl_srv_copychunk_recv(struct tevent_req
*req
,
350 struct srv_copychunk_rsp
*cc_rsp
,
353 struct fsctl_srv_copychunk_state
*state
= tevent_req_data(req
,
354 struct fsctl_srv_copychunk_state
);
357 switch (state
->out_data
) {
358 case COPYCHUNK_OUT_EMPTY
:
361 case COPYCHUNK_OUT_LIMITS
:
362 /* 2.2.32.1 - send back our maximum transfer size limits */
363 copychunk_pack_limits(cc_rsp
);
366 case COPYCHUNK_OUT_RSP
:
367 cc_rsp
->chunks_written
= state
->recv_count
- state
->bad_recv_count
;
368 cc_rsp
->chunk_bytes_written
= 0;
369 cc_rsp
->total_bytes_written
= state
->total_written
;
372 default: /* not reached */
376 status
= state
->status
;
377 tevent_req_received(req
);
382 static NTSTATUS
fsctl_validate_neg_info(TALLOC_CTX
*mem_ctx
,
383 struct tevent_context
*ev
,
384 struct smbXsrv_connection
*conn
,
386 uint32_t in_max_output
,
387 DATA_BLOB
*out_output
,
390 uint32_t in_capabilities
;
391 DATA_BLOB in_guid_blob
;
393 uint16_t in_security_mode
;
394 uint16_t in_num_dialects
;
396 DATA_BLOB out_guid_blob
;
399 if (in_input
->length
< 0x18) {
400 return NT_STATUS_INVALID_PARAMETER
;
403 in_capabilities
= IVAL(in_input
->data
, 0x00);
404 in_guid_blob
= data_blob_const(in_input
->data
+ 0x04, 16);
405 in_security_mode
= SVAL(in_input
->data
, 0x14);
406 in_num_dialects
= SVAL(in_input
->data
, 0x16);
408 if (in_input
->length
< (0x18 + in_num_dialects
*2)) {
409 return NT_STATUS_INVALID_PARAMETER
;
412 if (in_max_output
< 0x18) {
413 return NT_STATUS_BUFFER_TOO_SMALL
;
416 status
= GUID_from_ndr_blob(&in_guid_blob
, &in_guid
);
417 if (!NT_STATUS_IS_OK(status
)) {
421 if (in_num_dialects
!= conn
->smb2
.client
.num_dialects
) {
423 return NT_STATUS_ACCESS_DENIED
;
426 for (i
=0; i
< in_num_dialects
; i
++) {
427 uint16_t v
= SVAL(in_input
->data
, 0x18 + i
*2);
429 if (conn
->smb2
.client
.dialects
[i
] != v
) {
431 return NT_STATUS_ACCESS_DENIED
;
435 if (GUID_compare(&in_guid
, &conn
->smb2
.client
.guid
) != 0) {
437 return NT_STATUS_ACCESS_DENIED
;
440 if (in_security_mode
!= conn
->smb2
.client
.security_mode
) {
442 return NT_STATUS_ACCESS_DENIED
;
445 if (in_capabilities
!= conn
->smb2
.client
.capabilities
) {
447 return NT_STATUS_ACCESS_DENIED
;
450 status
= GUID_to_ndr_blob(&conn
->smb2
.server
.guid
, mem_ctx
,
452 if (!NT_STATUS_IS_OK(status
)) {
456 *out_output
= data_blob_talloc(mem_ctx
, NULL
, 0x18);
457 if (out_output
->data
== NULL
) {
458 return NT_STATUS_NO_MEMORY
;
461 SIVAL(out_output
->data
, 0x00, conn
->smb2
.server
.capabilities
);
462 memcpy(out_output
->data
+0x04, out_guid_blob
.data
, 16);
463 SIVAL(out_output
->data
, 0x14, conn
->smb2
.server
.security_mode
);
464 SIVAL(out_output
->data
, 0x16, conn
->smb2
.server
.dialect
);
469 static NTSTATUS
fsctl_srv_req_resume_key(TALLOC_CTX
*mem_ctx
,
470 struct tevent_context
*ev
,
471 struct files_struct
*fsp
,
472 uint32_t in_max_output
,
473 DATA_BLOB
*out_output
)
475 struct req_resume_key_rsp rkey_rsp
;
476 enum ndr_err_code ndr_ret
;
480 return NT_STATUS_FILE_CLOSED
;
483 ZERO_STRUCT(rkey_rsp
);
484 /* combine persistent and volatile handles for the resume key */
485 SBVAL(rkey_rsp
.resume_key
, 0, fsp
->op
->global
->open_persistent_id
);
486 SBVAL(rkey_rsp
.resume_key
, 8, fsp
->op
->global
->open_volatile_id
);
488 ndr_ret
= ndr_push_struct_blob(&output
, mem_ctx
, &rkey_rsp
,
489 (ndr_push_flags_fn_t
)ndr_push_req_resume_key_rsp
);
490 if (ndr_ret
!= NDR_ERR_SUCCESS
) {
491 return NT_STATUS_INTERNAL_ERROR
;
494 if (in_max_output
< output
.length
) {
495 DEBUG(1, ("max output %u too small for resume key rsp %ld\n",
496 in_max_output
, (long int)output
.length
));
497 return NT_STATUS_INVALID_PARAMETER
;
499 *out_output
= output
;
504 static void smb2_ioctl_network_fs_copychunk_done(struct tevent_req
*subreq
);
506 struct tevent_req
*smb2_ioctl_network_fs(uint32_t ctl_code
,
507 struct tevent_context
*ev
,
508 struct tevent_req
*req
,
509 struct smbd_smb2_ioctl_state
*state
)
511 struct tevent_req
*subreq
;
515 case FSCTL_SRV_COPYCHUNK
:
516 subreq
= fsctl_srv_copychunk_send(state
, ev
, state
->fsp
,
519 if (tevent_req_nomem(subreq
, req
)) {
520 return tevent_req_post(req
, ev
);
522 tevent_req_set_callback(subreq
,
523 smb2_ioctl_network_fs_copychunk_done
,
527 case FSCTL_VALIDATE_NEGOTIATE_INFO
:
528 status
= fsctl_validate_neg_info(state
, ev
,
529 state
->smbreq
->sconn
->conn
,
531 state
->in_max_output
,
534 if (!tevent_req_nterror(req
, status
)) {
535 tevent_req_done(req
);
537 return tevent_req_post(req
, ev
);
539 case FSCTL_SRV_REQUEST_RESUME_KEY
:
540 status
= fsctl_srv_req_resume_key(state
, ev
, state
->fsp
,
541 state
->in_max_output
,
543 if (!tevent_req_nterror(req
, status
)) {
544 tevent_req_done(req
);
546 return tevent_req_post(req
, ev
);
549 uint8_t *out_data
= NULL
;
550 uint32_t out_data_len
= 0;
552 if (state
->fsp
== NULL
) {
553 status
= NT_STATUS_NOT_SUPPORTED
;
555 status
= SMB_VFS_FSCTL(state
->fsp
,
558 state
->smbreq
->flags2
,
559 state
->in_input
.data
,
560 state
->in_input
.length
,
562 state
->in_max_output
,
564 state
->out_output
= data_blob_const(out_data
, out_data_len
);
565 if (NT_STATUS_IS_OK(status
)) {
566 tevent_req_done(req
);
567 return tevent_req_post(req
, ev
);
571 if (NT_STATUS_EQUAL(status
, NT_STATUS_NOT_SUPPORTED
)) {
572 if (IS_IPC(state
->smbreq
->conn
)) {
573 status
= NT_STATUS_FS_DRIVER_REQUIRED
;
575 status
= NT_STATUS_INVALID_DEVICE_REQUEST
;
579 tevent_req_nterror(req
, status
);
580 return tevent_req_post(req
, ev
);
585 tevent_req_nterror(req
, NT_STATUS_INTERNAL_ERROR
);
586 return tevent_req_post(req
, ev
);
589 static void smb2_ioctl_network_fs_copychunk_done(struct tevent_req
*subreq
)
591 struct tevent_req
*req
= tevent_req_callback_data(subreq
,
593 struct smbd_smb2_ioctl_state
*ioctl_state
= tevent_req_data(req
,
594 struct smbd_smb2_ioctl_state
);
595 struct srv_copychunk_rsp cc_rsp
;
597 bool pack_rsp
= false;
600 status
= fsctl_srv_copychunk_recv(subreq
, &cc_rsp
, &pack_rsp
);
602 if (pack_rsp
== true) {
603 enum ndr_err_code ndr_ret
;
604 ndr_ret
= ndr_push_struct_blob(&ioctl_state
->out_output
,
607 (ndr_push_flags_fn_t
)ndr_push_srv_copychunk_rsp
);
608 if (ndr_ret
!= NDR_ERR_SUCCESS
) {
609 status
= NT_STATUS_INTERNAL_ERROR
;
613 if (!tevent_req_nterror(req
, status
)) {
614 tevent_req_done(req
);