2 Unix SMB/CIFS implementation.
5 Copyright (C) Stefan Metzmacher 2009
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 "../libcli/smb/smb_common.h"
25 #include "../lib/util/tevent_ntstatus.h"
26 #include "rpc_server/srv_pipe_hnd.h"
28 static struct tevent_req
*smbd_smb2_write_send(TALLOC_CTX
*mem_ctx
,
29 struct tevent_context
*ev
,
30 struct smbd_smb2_request
*smb2req
,
32 uint64_t in_file_id_volatile
,
36 static NTSTATUS
smbd_smb2_write_recv(struct tevent_req
*req
,
39 static void smbd_smb2_request_write_done(struct tevent_req
*subreq
);
40 NTSTATUS
smbd_smb2_request_process_write(struct smbd_smb2_request
*req
)
44 const uint8_t *inbody
;
45 int i
= req
->current_idx
;
47 uint16_t in_data_offset
;
48 uint32_t in_data_length
;
49 DATA_BLOB in_data_buffer
;
51 uint64_t in_file_id_persistent
;
52 uint64_t in_file_id_volatile
;
54 struct tevent_req
*subreq
;
56 status
= smbd_smb2_request_verify_sizes(req
, 0x31);
57 if (!NT_STATUS_IS_OK(status
)) {
58 return smbd_smb2_request_error(req
, status
);
60 inhdr
= (const uint8_t *)req
->in
.vector
[i
+0].iov_base
;
61 inbody
= (const uint8_t *)req
->in
.vector
[i
+1].iov_base
;
63 in_smbpid
= IVAL(inhdr
, SMB2_HDR_PID
);
65 in_data_offset
= SVAL(inbody
, 0x02);
66 in_data_length
= IVAL(inbody
, 0x04);
67 in_offset
= BVAL(inbody
, 0x08);
68 in_file_id_persistent
= BVAL(inbody
, 0x10);
69 in_file_id_volatile
= BVAL(inbody
, 0x18);
70 in_flags
= IVAL(inbody
, 0x2C);
72 if (in_data_offset
!= (SMB2_HDR_BODY
+ req
->in
.vector
[i
+1].iov_len
)) {
73 return smbd_smb2_request_error(req
, NT_STATUS_INVALID_PARAMETER
);
76 if (in_data_length
> req
->in
.vector
[i
+2].iov_len
) {
77 return smbd_smb2_request_error(req
, NT_STATUS_INVALID_PARAMETER
);
80 /* check the max write size */
81 if (in_data_length
> req
->sconn
->smb2
.max_write
) {
82 DEBUG(2,("smbd_smb2_request_process_write : "
83 "client ignored max write :%s: 0x%08X: 0x%08X\n",
84 __location__
, in_data_length
, req
->sconn
->smb2
.max_write
));
85 return smbd_smb2_request_error(req
, NT_STATUS_INVALID_PARAMETER
);
88 in_data_buffer
.data
= (uint8_t *)req
->in
.vector
[i
+2].iov_base
;
89 in_data_buffer
.length
= in_data_length
;
91 status
= smbd_smb2_request_verify_creditcharge(req
, in_data_length
);
92 if (!NT_STATUS_IS_OK(status
)) {
93 return smbd_smb2_request_error(req
, status
);
96 if (req
->compat_chain_fsp
) {
98 } else if (in_file_id_persistent
!= in_file_id_volatile
) {
99 return smbd_smb2_request_error(req
, NT_STATUS_FILE_CLOSED
);
102 subreq
= smbd_smb2_write_send(req
,
110 if (subreq
== NULL
) {
111 return smbd_smb2_request_error(req
, NT_STATUS_NO_MEMORY
);
113 tevent_req_set_callback(subreq
, smbd_smb2_request_write_done
, req
);
115 return smbd_smb2_request_pending_queue(req
, subreq
, 500);
118 static void smbd_smb2_request_write_done(struct tevent_req
*subreq
)
120 struct smbd_smb2_request
*req
= tevent_req_callback_data(subreq
,
121 struct smbd_smb2_request
);
124 uint32_t out_count
= 0;
126 NTSTATUS error
; /* transport error */
128 status
= smbd_smb2_write_recv(subreq
, &out_count
);
130 if (!NT_STATUS_IS_OK(status
)) {
131 error
= smbd_smb2_request_error(req
, status
);
132 if (!NT_STATUS_IS_OK(error
)) {
133 smbd_server_connection_terminate(req
->sconn
,
140 outbody
= data_blob_talloc(req
->out
.vector
, NULL
, 0x10);
141 if (outbody
.data
== NULL
) {
142 error
= smbd_smb2_request_error(req
, NT_STATUS_NO_MEMORY
);
143 if (!NT_STATUS_IS_OK(error
)) {
144 smbd_server_connection_terminate(req
->sconn
,
151 SSVAL(outbody
.data
, 0x00, 0x10 + 1); /* struct size */
152 SSVAL(outbody
.data
, 0x02, 0); /* reserved */
153 SIVAL(outbody
.data
, 0x04, out_count
); /* count */
154 SIVAL(outbody
.data
, 0x08, 0); /* remaining */
155 SSVAL(outbody
.data
, 0x0C, 0); /* write channel info offset */
156 SSVAL(outbody
.data
, 0x0E, 0); /* write channel info length */
158 outdyn
= data_blob_const(NULL
, 0);
160 error
= smbd_smb2_request_done(req
, outbody
, &outdyn
);
161 if (!NT_STATUS_IS_OK(error
)) {
162 smbd_server_connection_terminate(req
->sconn
, nt_errstr(error
));
167 struct smbd_smb2_write_state
{
168 struct smbd_smb2_request
*smb2req
;
169 struct smb_request
*smbreq
;
177 static void smbd_smb2_write_pipe_done(struct tevent_req
*subreq
);
179 NTSTATUS
smb2_write_complete(struct tevent_req
*req
, ssize_t nwritten
, int err
)
182 struct smbd_smb2_write_state
*state
= tevent_req_data(req
,
183 struct smbd_smb2_write_state
);
184 files_struct
*fsp
= state
->fsp
;
186 if (nwritten
== -1) {
187 status
= map_nt_error_from_unix(err
);
189 DEBUG(2, ("smb2_write failed: fnum=[%d/%s] "
190 "length=%lu offset=%lu nwritten=-1: %s\n",
193 (unsigned long)state
->in_length
,
194 (unsigned long)state
->in_offset
,
200 DEBUG(3,("smb2: fnum=[%d/%s] "
201 "length=%lu offset=%lu wrote=%lu\n",
204 (unsigned long)state
->in_length
,
205 (unsigned long)state
->in_offset
,
206 (unsigned long)nwritten
));
208 if ((nwritten
== 0) && (state
->in_length
!= 0)) {
209 DEBUG(5,("smb2: write [%s] disk full\n",
211 return NT_STATUS_DISK_FULL
;
214 status
= sync_file(fsp
->conn
, fsp
, state
->write_through
);
215 if (!NT_STATUS_IS_OK(status
)) {
216 DEBUG(5,("smb2: sync_file for %s returned %s\n",
222 state
->out_count
= nwritten
;
227 static bool smbd_smb2_write_cancel(struct tevent_req
*req
)
229 struct smbd_smb2_write_state
*state
=
231 struct smbd_smb2_write_state
);
233 state
->smb2req
->cancelled
= true;
235 return cancel_smb2_aio(state
->smbreq
);
238 static struct tevent_req
*smbd_smb2_write_send(TALLOC_CTX
*mem_ctx
,
239 struct tevent_context
*ev
,
240 struct smbd_smb2_request
*smb2req
,
242 uint64_t in_file_id_volatile
,
248 struct tevent_req
*req
= NULL
;
249 struct smbd_smb2_write_state
*state
= NULL
;
250 struct smb_request
*smbreq
= NULL
;
251 connection_struct
*conn
= smb2req
->tcon
->compat_conn
;
252 files_struct
*fsp
= NULL
;
254 struct lock_struct lock
;
256 req
= tevent_req_create(mem_ctx
, &state
,
257 struct smbd_smb2_write_state
);
261 state
->smb2req
= smb2req
;
262 if (in_flags
& SMB2_WRITEFLAG_WRITE_THROUGH
) {
263 state
->write_through
= true;
265 state
->in_length
= in_data
.length
;
266 state
->out_count
= 0;
268 DEBUG(10,("smbd_smb2_write: file_id[0x%016llX]\n",
269 (unsigned long long)in_file_id_volatile
));
271 smbreq
= smbd_smb2_fake_smb_request(smb2req
);
272 if (tevent_req_nomem(smbreq
, req
)) {
273 return tevent_req_post(req
, ev
);
275 state
->smbreq
= smbreq
;
277 fsp
= file_fsp(smbreq
, (uint16_t)in_file_id_volatile
);
279 tevent_req_nterror(req
, NT_STATUS_FILE_CLOSED
);
280 return tevent_req_post(req
, ev
);
282 if (conn
!= fsp
->conn
) {
283 tevent_req_nterror(req
, NT_STATUS_FILE_CLOSED
);
284 return tevent_req_post(req
, ev
);
286 if (smb2req
->session
->vuid
!= fsp
->vuid
) {
287 tevent_req_nterror(req
, NT_STATUS_FILE_CLOSED
);
288 return tevent_req_post(req
, ev
);
293 if (IS_IPC(smbreq
->conn
)) {
294 struct tevent_req
*subreq
= NULL
;
296 if (!fsp_is_np(fsp
)) {
297 tevent_req_nterror(req
, NT_STATUS_FILE_CLOSED
);
298 return tevent_req_post(req
, ev
);
301 subreq
= np_write_send(state
, ev
,
302 fsp
->fake_file_handle
,
305 if (tevent_req_nomem(subreq
, req
)) {
306 return tevent_req_post(req
, ev
);
308 tevent_req_set_callback(subreq
,
309 smbd_smb2_write_pipe_done
,
314 if (!CHECK_WRITE(fsp
)) {
315 tevent_req_nterror(req
, NT_STATUS_ACCESS_DENIED
);
316 return tevent_req_post(req
, ev
);
319 /* Try and do an asynchronous write. */
320 status
= schedule_aio_smb2_write(conn
,
325 state
->write_through
);
327 if (NT_STATUS_IS_OK(status
)) {
329 * Doing an async write, allow this
330 * request to be canceled
332 tevent_req_set_cancel_fn(req
, smbd_smb2_write_cancel
);
336 if (!NT_STATUS_EQUAL(status
, NT_STATUS_RETRY
)) {
337 /* Real error in setting up aio. Fail. */
338 tevent_req_nterror(req
, NT_STATUS_FILE_CLOSED
);
339 return tevent_req_post(req
, ev
);
342 /* Fallback to synchronous. */
343 init_strict_lock_struct(fsp
,
350 if (!SMB_VFS_STRICT_LOCK(conn
, fsp
, &lock
)) {
351 tevent_req_nterror(req
, NT_STATUS_FILE_LOCK_CONFLICT
);
352 return tevent_req_post(req
, ev
);
355 nwritten
= write_file(smbreq
, fsp
,
356 (const char *)in_data
.data
,
360 status
= smb2_write_complete(req
, nwritten
, errno
);
362 SMB_VFS_STRICT_UNLOCK(conn
, fsp
, &lock
);
364 DEBUG(10,("smb2: write on "
365 "file %s, offset %.0f, requested %u, written = %u\n",
368 (unsigned int)in_data
.length
,
369 (unsigned int)nwritten
));
371 if (!NT_STATUS_IS_OK(status
)) {
372 tevent_req_nterror(req
, status
);
375 tevent_req_done(req
);
378 return tevent_req_post(req
, ev
);
381 static void smbd_smb2_write_pipe_done(struct tevent_req
*subreq
)
383 struct tevent_req
*req
= tevent_req_callback_data(subreq
,
385 struct smbd_smb2_write_state
*state
= tevent_req_data(req
,
386 struct smbd_smb2_write_state
);
388 ssize_t nwritten
= -1;
390 status
= np_write_recv(subreq
, &nwritten
);
392 if (!NT_STATUS_IS_OK(status
)) {
393 NTSTATUS old
= status
;
394 status
= nt_status_np_pipe(old
);
395 tevent_req_nterror(req
, status
);
399 if ((nwritten
== 0 && state
->in_length
!= 0) || (nwritten
< 0)) {
400 tevent_req_nterror(req
, NT_STATUS_ACCESS_DENIED
);
404 state
->out_count
= nwritten
;
406 tevent_req_done(req
);
409 static NTSTATUS
smbd_smb2_write_recv(struct tevent_req
*req
,
413 struct smbd_smb2_write_state
*state
= tevent_req_data(req
,
414 struct smbd_smb2_write_state
);
416 if (tevent_req_is_nterror(req
, &status
)) {
417 tevent_req_received(req
);
421 *out_count
= state
->out_count
;
423 tevent_req_received(req
);