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/globals.h"
23 #include "../source4/libcli/smb2/smb2_constants.h"
25 static struct tevent_req
*smbd_smb2_write_send(TALLOC_CTX
*mem_ctx
,
26 struct tevent_context
*ev
,
27 struct smbd_smb2_request
*smb2req
,
29 uint64_t in_file_id_volatile
,
33 static NTSTATUS
smbd_smb2_write_recv(struct tevent_req
*req
,
36 static void smbd_smb2_request_write_done(struct tevent_req
*subreq
);
37 NTSTATUS
smbd_smb2_request_process_write(struct smbd_smb2_request
*req
)
40 const uint8_t *inbody
;
41 int i
= req
->current_idx
;
42 size_t expected_body_size
= 0x31;
45 uint16_t in_data_offset
;
46 uint32_t in_data_length
;
47 DATA_BLOB in_data_buffer
;
49 uint64_t in_file_id_persistent
;
50 uint64_t in_file_id_volatile
;
52 struct tevent_req
*subreq
;
54 inhdr
= (const uint8_t *)req
->in
.vector
[i
+0].iov_base
;
55 if (req
->in
.vector
[i
+1].iov_len
!= (expected_body_size
& 0xFFFFFFFE)) {
56 return smbd_smb2_request_error(req
, NT_STATUS_INVALID_PARAMETER
);
59 inbody
= (const uint8_t *)req
->in
.vector
[i
+1].iov_base
;
61 body_size
= SVAL(inbody
, 0x00);
62 if (body_size
!= expected_body_size
) {
63 return smbd_smb2_request_error(req
, NT_STATUS_INVALID_PARAMETER
);
66 in_smbpid
= IVAL(inhdr
, SMB2_HDR_PID
);
68 in_data_offset
= SVAL(inbody
, 0x02);
69 in_data_length
= IVAL(inbody
, 0x04);
70 in_offset
= BVAL(inbody
, 0x08);
71 in_file_id_persistent
= BVAL(inbody
, 0x10);
72 in_file_id_volatile
= BVAL(inbody
, 0x18);
73 in_flags
= IVAL(inbody
, 0x2C);
75 if (in_data_offset
!= (SMB2_HDR_BODY
+ (body_size
& 0xFFFFFFFE))) {
76 return smbd_smb2_request_error(req
, NT_STATUS_INVALID_PARAMETER
);
79 if (in_data_length
> req
->in
.vector
[i
+2].iov_len
) {
80 return smbd_smb2_request_error(req
, NT_STATUS_INVALID_PARAMETER
);
83 /* check the max write size */
84 if (in_data_length
> 0x00010000) {
85 DEBUG(0,("here:%s: 0x%08X: 0x%08X\n",
86 __location__
, in_data_length
, 0x00010000));
87 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 (in_file_id_persistent
!= 0) {
94 return smbd_smb2_request_error(req
, NT_STATUS_FILE_CLOSED
);
97 subreq
= smbd_smb2_write_send(req
,
98 req
->conn
->smb2
.event_ctx
,
105 if (subreq
== NULL
) {
106 return smbd_smb2_request_error(req
, NT_STATUS_NO_MEMORY
);
108 tevent_req_set_callback(subreq
, smbd_smb2_request_write_done
, req
);
112 static void smbd_smb2_request_write_done(struct tevent_req
*subreq
)
114 struct smbd_smb2_request
*req
= tevent_req_callback_data(subreq
,
115 struct smbd_smb2_request
);
116 int i
= req
->current_idx
;
122 NTSTATUS error
; /* transport error */
124 status
= smbd_smb2_write_recv(subreq
, &out_count
);
126 if (!NT_STATUS_IS_OK(status
)) {
127 error
= smbd_smb2_request_error(req
, status
);
128 if (!NT_STATUS_IS_OK(error
)) {
129 smbd_server_connection_terminate(req
->conn
,
136 outhdr
= (uint8_t *)req
->out
.vector
[i
].iov_base
;
138 outbody
= data_blob_talloc(req
->out
.vector
, NULL
, 0x10);
139 if (outbody
.data
== NULL
) {
140 error
= smbd_smb2_request_error(req
, NT_STATUS_NO_MEMORY
);
141 if (!NT_STATUS_IS_OK(error
)) {
142 smbd_server_connection_terminate(req
->conn
,
149 SSVAL(outbody
.data
, 0x00, 0x10 + 1); /* struct size */
150 SSVAL(outbody
.data
, 0x02, 0); /* reserved */
151 SIVAL(outbody
.data
, 0x04, out_count
); /* count */
152 SIVAL(outbody
.data
, 0x08, 0); /* remaining */
153 SSVAL(outbody
.data
, 0x0C, 0); /* write channel info offset */
154 SSVAL(outbody
.data
, 0x0E, 0); /* write channel info length */
156 outdyn
= data_blob_const(NULL
, 0);
158 error
= smbd_smb2_request_done(req
, outbody
, &outdyn
);
159 if (!NT_STATUS_IS_OK(error
)) {
160 smbd_server_connection_terminate(req
->conn
, nt_errstr(error
));
165 struct smbd_smb2_write_state
{
166 struct smbd_smb2_request
*smb2req
;
171 static struct tevent_req
*smbd_smb2_write_send(TALLOC_CTX
*mem_ctx
,
172 struct tevent_context
*ev
,
173 struct smbd_smb2_request
*smb2req
,
175 uint64_t in_file_id_volatile
,
181 struct tevent_req
*req
;
182 struct smbd_smb2_write_state
*state
;
183 struct smb_request
*smbreq
;
184 connection_struct
*conn
= smb2req
->tcon
->compat_conn
;
187 bool write_through
= false;
188 struct lock_struct lock
;
190 req
= tevent_req_create(mem_ctx
, &state
,
191 struct smbd_smb2_write_state
);
195 state
->smb2req
= smb2req
;
196 state
->in_length
= in_data
.length
;
197 state
->out_count
= 0;
199 DEBUG(10,("smbd_smb2_write: file_id[0x%016llX]\n",
200 (unsigned long long)in_file_id_volatile
));
202 smbreq
= smbd_smb2_fake_smb_request(smb2req
);
203 if (tevent_req_nomem(smbreq
, req
)) {
204 return tevent_req_post(req
, ev
);
207 fsp
= file_fsp(smbreq
, (uint16_t)in_file_id_volatile
);
209 tevent_req_nterror(req
, NT_STATUS_FILE_CLOSED
);
210 return tevent_req_post(req
, ev
);
212 if (conn
!= fsp
->conn
) {
213 tevent_req_nterror(req
, NT_STATUS_FILE_CLOSED
);
214 return tevent_req_post(req
, ev
);
216 if (smb2req
->session
->vuid
!= fsp
->vuid
) {
217 tevent_req_nterror(req
, NT_STATUS_FILE_CLOSED
);
218 return tevent_req_post(req
, ev
);
221 if (!CHECK_WRITE(fsp
)) {
222 tevent_req_nterror(req
, NT_STATUS_ACCESS_DENIED
);
223 return tevent_req_post(req
, ev
);
226 if (IS_IPC(smbreq
->conn
)) {
227 tevent_req_nterror(req
, NT_STATUS_NOT_IMPLEMENTED
);
228 return tevent_req_post(req
, ev
);
231 init_strict_lock_struct(fsp
,
238 if (!SMB_VFS_STRICT_LOCK(conn
, fsp
, &lock
)) {
239 tevent_req_nterror(req
, NT_STATUS_FILE_LOCK_CONFLICT
);
240 return tevent_req_post(req
, ev
);
243 nwritten
= write_file(smbreq
, fsp
,
244 (const char *)in_data
.data
,
248 if (((nwritten
== 0) && (in_data
.length
!= 0)) || (nwritten
< 0)) {
249 DEBUG(5,("smbd_smb2_write: write_file[%s] disk full\n",
251 SMB_VFS_STRICT_UNLOCK(conn
, fsp
, &lock
);
252 tevent_req_nterror(req
, NT_STATUS_DISK_FULL
);
253 return tevent_req_post(req
, ev
);
256 DEBUG(3,("smbd_smb2_write: fnum=[%d/%s] length=%d offset=%d wrote=%d\n",
257 fsp
->fnum
, fsp
->fsp_name
, (int)in_data
.length
,
258 (int)in_offset
, (int)nwritten
));
260 if (in_flags
& 0x00000001) {
261 write_through
= true;
264 status
= sync_file(conn
, fsp
, write_through
);
265 if (!NT_STATUS_IS_OK(status
)) {
266 DEBUG(5,("smbd_smb2_write: sync_file for %s returned %s\n",
267 fsp
->fsp_name
, nt_errstr(status
)));
268 SMB_VFS_STRICT_UNLOCK(conn
, fsp
, &lock
);
269 tevent_req_nterror(req
, status
);
270 return tevent_req_post(req
, ev
);
273 SMB_VFS_STRICT_UNLOCK(conn
, fsp
, &lock
);
275 state
->out_count
= nwritten
;
277 tevent_req_done(req
);
278 return tevent_req_post(req
, ev
);
281 static NTSTATUS
smbd_smb2_write_recv(struct tevent_req
*req
,
285 struct smbd_smb2_write_state
*state
= tevent_req_data(req
,
286 struct smbd_smb2_write_state
);
288 if (tevent_req_is_nterror(req
, &status
)) {
289 tevent_req_received(req
);
293 *out_count
= state
->out_count
;
295 tevent_req_received(req
);