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
));
86 return smbd_smb2_request_error(req
, NT_STATUS_INVALID_PARAMETER
);
90 in_data_buffer
.data
= (uint8_t *)req
->in
.vector
[i
+2].iov_base
;
91 in_data_buffer
.length
= in_data_length
;
93 if (req
->compat_chain_fsp
) {
95 } else if (in_file_id_persistent
!= in_file_id_volatile
) {
96 return smbd_smb2_request_error(req
, NT_STATUS_FILE_CLOSED
);
99 subreq
= smbd_smb2_write_send(req
,
100 req
->sconn
->smb2
.event_ctx
,
107 if (subreq
== NULL
) {
108 return smbd_smb2_request_error(req
, NT_STATUS_NO_MEMORY
);
110 tevent_req_set_callback(subreq
, smbd_smb2_request_write_done
, req
);
112 return smbd_smb2_request_pending_queue(req
, subreq
);
115 static void smbd_smb2_request_write_done(struct tevent_req
*subreq
)
117 struct smbd_smb2_request
*req
= tevent_req_callback_data(subreq
,
118 struct smbd_smb2_request
);
119 int i
= req
->current_idx
;
123 uint32_t out_count
= 0;
125 NTSTATUS error
; /* transport error */
127 status
= smbd_smb2_write_recv(subreq
, &out_count
);
129 if (!NT_STATUS_IS_OK(status
)) {
130 error
= smbd_smb2_request_error(req
, status
);
131 if (!NT_STATUS_IS_OK(error
)) {
132 smbd_server_connection_terminate(req
->sconn
,
139 outhdr
= (uint8_t *)req
->out
.vector
[i
].iov_base
;
141 outbody
= data_blob_talloc(req
->out
.vector
, NULL
, 0x10);
142 if (outbody
.data
== NULL
) {
143 error
= smbd_smb2_request_error(req
, NT_STATUS_NO_MEMORY
);
144 if (!NT_STATUS_IS_OK(error
)) {
145 smbd_server_connection_terminate(req
->sconn
,
152 SSVAL(outbody
.data
, 0x00, 0x10 + 1); /* struct size */
153 SSVAL(outbody
.data
, 0x02, 0); /* reserved */
154 SIVAL(outbody
.data
, 0x04, out_count
); /* count */
155 SIVAL(outbody
.data
, 0x08, 0); /* remaining */
156 SSVAL(outbody
.data
, 0x0C, 0); /* write channel info offset */
157 SSVAL(outbody
.data
, 0x0E, 0); /* write channel info length */
159 outdyn
= data_blob_const(NULL
, 0);
161 error
= smbd_smb2_request_done(req
, outbody
, &outdyn
);
162 if (!NT_STATUS_IS_OK(error
)) {
163 smbd_server_connection_terminate(req
->sconn
, nt_errstr(error
));
168 struct smbd_smb2_write_state
{
169 struct smbd_smb2_request
*smb2req
;
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 DEBUG(3,("smb2: fnum=[%d/%s] "
187 "length=%lu offset=%lu wrote=%lu\n",
190 (unsigned long)state
->in_length
,
191 (unsigned long)state
->in_offset
,
192 (unsigned long)nwritten
));
194 if (nwritten
== -1) {
195 return map_nt_error_from_unix(err
);
198 if ((nwritten
== 0) && (state
->in_length
!= 0)) {
199 DEBUG(5,("smb2: write [%s] disk full\n",
201 return NT_STATUS_DISK_FULL
;
204 status
= sync_file(fsp
->conn
, fsp
, state
->write_through
);
205 if (!NT_STATUS_IS_OK(status
)) {
206 DEBUG(5,("smb2: sync_file for %s returned %s\n",
212 state
->out_count
= nwritten
;
217 static struct tevent_req
*smbd_smb2_write_send(TALLOC_CTX
*mem_ctx
,
218 struct tevent_context
*ev
,
219 struct smbd_smb2_request
*smb2req
,
221 uint64_t in_file_id_volatile
,
227 struct tevent_req
*req
= NULL
;
228 struct smbd_smb2_write_state
*state
= NULL
;
229 struct smb_request
*smbreq
= NULL
;
230 connection_struct
*conn
= smb2req
->tcon
->compat_conn
;
231 files_struct
*fsp
= NULL
;
233 struct lock_struct lock
;
235 req
= tevent_req_create(mem_ctx
, &state
,
236 struct smbd_smb2_write_state
);
240 state
->smb2req
= smb2req
;
241 if (in_flags
& 0x00000001) {
242 state
->write_through
= true;
244 state
->in_length
= in_data
.length
;
245 state
->out_count
= 0;
247 DEBUG(10,("smbd_smb2_write: file_id[0x%016llX]\n",
248 (unsigned long long)in_file_id_volatile
));
250 smbreq
= smbd_smb2_fake_smb_request(smb2req
);
251 if (tevent_req_nomem(smbreq
, req
)) {
252 return tevent_req_post(req
, ev
);
255 fsp
= file_fsp(smbreq
, (uint16_t)in_file_id_volatile
);
257 tevent_req_nterror(req
, NT_STATUS_FILE_CLOSED
);
258 return tevent_req_post(req
, ev
);
260 if (conn
!= fsp
->conn
) {
261 tevent_req_nterror(req
, NT_STATUS_FILE_CLOSED
);
262 return tevent_req_post(req
, ev
);
264 if (smb2req
->session
->vuid
!= fsp
->vuid
) {
265 tevent_req_nterror(req
, NT_STATUS_FILE_CLOSED
);
266 return tevent_req_post(req
, ev
);
271 if (IS_IPC(smbreq
->conn
)) {
272 struct tevent_req
*subreq
= NULL
;
274 if (!fsp_is_np(fsp
)) {
275 tevent_req_nterror(req
, NT_STATUS_FILE_CLOSED
);
276 return tevent_req_post(req
, ev
);
279 subreq
= np_write_send(state
, smbd_event_context(),
280 fsp
->fake_file_handle
,
283 if (tevent_req_nomem(subreq
, req
)) {
284 return tevent_req_post(req
, ev
);
286 tevent_req_set_callback(subreq
,
287 smbd_smb2_write_pipe_done
,
292 if (!CHECK_WRITE(fsp
)) {
293 tevent_req_nterror(req
, NT_STATUS_ACCESS_DENIED
);
294 return tevent_req_post(req
, ev
);
297 /* Try and do an asynchronous write. */
298 status
= schedule_aio_smb2_write(conn
,
303 state
->write_through
);
305 if (NT_STATUS_IS_OK(status
)) {
307 * Doing an async write. Don't
308 * send a "gone async" message
309 * as we expect this to be less
310 * than the client timeout period.
311 * JRA. FIXME for offline files..
312 * FIXME - add cancel code..
314 smb2req
->async
= true;
318 if (!NT_STATUS_EQUAL(status
, NT_STATUS_RETRY
)) {
319 /* Real error in setting up aio. Fail. */
320 tevent_req_nterror(req
, NT_STATUS_FILE_CLOSED
);
321 return tevent_req_post(req
, ev
);
324 /* Fallback to synchronous. */
325 init_strict_lock_struct(fsp
,
332 if (!SMB_VFS_STRICT_LOCK(conn
, fsp
, &lock
)) {
333 tevent_req_nterror(req
, NT_STATUS_FILE_LOCK_CONFLICT
);
334 return tevent_req_post(req
, ev
);
337 nwritten
= write_file(smbreq
, fsp
,
338 (const char *)in_data
.data
,
342 status
= smb2_write_complete(req
, nwritten
, errno
);
344 SMB_VFS_STRICT_UNLOCK(conn
, fsp
, &lock
);
346 DEBUG(10,("smb2: write on "
347 "file %s, offset %.0f, requested %u, written = %u\n",
350 (unsigned int)in_data
.length
,
351 (unsigned int)nwritten
));
353 if (!NT_STATUS_IS_OK(status
)) {
354 tevent_req_nterror(req
, status
);
357 tevent_req_done(req
);
360 return tevent_req_post(req
, ev
);
363 static void smbd_smb2_write_pipe_done(struct tevent_req
*subreq
)
365 struct tevent_req
*req
= tevent_req_callback_data(subreq
,
367 struct smbd_smb2_write_state
*state
= tevent_req_data(req
,
368 struct smbd_smb2_write_state
);
370 ssize_t nwritten
= -1;
372 status
= np_write_recv(subreq
, &nwritten
);
374 if (!NT_STATUS_IS_OK(status
)) {
375 tevent_req_nterror(req
, status
);
379 if ((nwritten
== 0 && state
->in_length
!= 0) || (nwritten
< 0)) {
380 tevent_req_nterror(req
, NT_STATUS_ACCESS_DENIED
);
384 state
->out_count
= nwritten
;
386 tevent_req_done(req
);
389 static NTSTATUS
smbd_smb2_write_recv(struct tevent_req
*req
,
393 struct smbd_smb2_write_state
*state
= tevent_req_data(req
,
394 struct smbd_smb2_write_state
);
396 if (tevent_req_is_nterror(req
, &status
)) {
397 tevent_req_received(req
);
401 *out_count
= state
->out_count
;
403 tevent_req_received(req
);