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 (req->compat_chain_fsp) {
95 } else if (in_file_id_persistent != 0) {
96 return smbd_smb2_request_error(req, NT_STATUS_FILE_CLOSED);
99 subreq = smbd_smb2_write_send(req,
100 req->conn->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 if (tevent_req_is_in_progress(subreq)) {
113 return smbd_smb2_request_pending_queue(req);
119 static void smbd_smb2_request_write_done(struct tevent_req *subreq)
121 struct smbd_smb2_request *req = tevent_req_callback_data(subreq,
122 struct smbd_smb2_request);
123 int i = req->current_idx;
129 NTSTATUS error; /* transport error */
131 status = smbd_smb2_write_recv(subreq, &out_count);
133 if (!NT_STATUS_IS_OK(status)) {
134 error = smbd_smb2_request_error(req, status);
135 if (!NT_STATUS_IS_OK(error)) {
136 smbd_server_connection_terminate(req->conn,
143 outhdr = (uint8_t *)req->out.vector[i].iov_base;
145 outbody = data_blob_talloc(req->out.vector, NULL, 0x10);
146 if (outbody.data == NULL) {
147 error = smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
148 if (!NT_STATUS_IS_OK(error)) {
149 smbd_server_connection_terminate(req->conn,
156 SSVAL(outbody.data, 0x00, 0x10 + 1); /* struct size */
157 SSVAL(outbody.data, 0x02, 0); /* reserved */
158 SIVAL(outbody.data, 0x04, out_count); /* count */
159 SIVAL(outbody.data, 0x08, 0); /* remaining */
160 SSVAL(outbody.data, 0x0C, 0); /* write channel info offset */
161 SSVAL(outbody.data, 0x0E, 0); /* write channel info length */
163 outdyn = data_blob_const(NULL, 0);
165 error = smbd_smb2_request_done(req, outbody, &outdyn);
166 if (!NT_STATUS_IS_OK(error)) {
167 smbd_server_connection_terminate(req->conn, nt_errstr(error));
172 struct smbd_smb2_write_state {
173 struct smbd_smb2_request *smb2req;
178 static void smbd_smb2_write_pipe_done(struct tevent_req *subreq);
180 static struct tevent_req *smbd_smb2_write_send(TALLOC_CTX *mem_ctx,
181 struct tevent_context *ev,
182 struct smbd_smb2_request *smb2req,
184 uint64_t in_file_id_volatile,
190 struct tevent_req *req;
191 struct smbd_smb2_write_state *state;
192 struct smb_request *smbreq;
193 connection_struct *conn = smb2req->tcon->compat_conn;
196 bool write_through = false;
197 struct lock_struct lock;
199 req = tevent_req_create(mem_ctx, &state,
200 struct smbd_smb2_write_state);
204 state->smb2req = smb2req;
205 state->in_length = in_data.length;
206 state->out_count = 0;
208 DEBUG(10,("smbd_smb2_write: file_id[0x%016llX]\n",
209 (unsigned long long)in_file_id_volatile));
211 smbreq = smbd_smb2_fake_smb_request(smb2req);
212 if (tevent_req_nomem(smbreq, req)) {
213 return tevent_req_post(req, ev);
216 fsp = file_fsp(smbreq, (uint16_t)in_file_id_volatile);
218 tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
219 return tevent_req_post(req, ev);
221 if (conn != fsp->conn) {
222 tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
223 return tevent_req_post(req, ev);
225 if (smb2req->session->vuid != fsp->vuid) {
226 tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
227 return tevent_req_post(req, ev);
230 if (IS_IPC(smbreq->conn)) {
231 struct tevent_req *subreq;
233 if (!fsp_is_np(fsp)) {
234 tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
235 return tevent_req_post(req, ev);
238 subreq = np_write_send(state, smbd_event_context(),
239 fsp->fake_file_handle,
242 if (tevent_req_nomem(subreq, req)) {
243 return tevent_req_post(req, ev);
245 tevent_req_set_callback(subreq,
246 smbd_smb2_write_pipe_done,
251 if (!CHECK_WRITE(fsp)) {
252 tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
253 return tevent_req_post(req, ev);
256 init_strict_lock_struct(fsp,
263 if (!SMB_VFS_STRICT_LOCK(conn, fsp, &lock)) {
264 tevent_req_nterror(req, NT_STATUS_FILE_LOCK_CONFLICT);
265 return tevent_req_post(req, ev);
268 nwritten = write_file(smbreq, fsp,
269 (const char *)in_data.data,
273 if (((nwritten == 0) && (in_data.length != 0)) || (nwritten < 0)) {
274 DEBUG(5,("smbd_smb2_write: write_file[%s] disk full\n",
276 SMB_VFS_STRICT_UNLOCK(conn, fsp, &lock);
277 tevent_req_nterror(req, NT_STATUS_DISK_FULL);
278 return tevent_req_post(req, ev);
281 DEBUG(3,("smbd_smb2_write: fnum=[%d/%s] length=%d offset=%d wrote=%d\n",
282 fsp->fnum, fsp->fsp_name, (int)in_data.length,
283 (int)in_offset, (int)nwritten));
285 if (in_flags & 0x00000001) {
286 write_through = true;
289 status = sync_file(conn, fsp, write_through);
290 if (!NT_STATUS_IS_OK(status)) {
291 DEBUG(5,("smbd_smb2_write: sync_file for %s returned %s\n",
292 fsp->fsp_name, nt_errstr(status)));
293 SMB_VFS_STRICT_UNLOCK(conn, fsp, &lock);
294 tevent_req_nterror(req, status);
295 return tevent_req_post(req, ev);
298 SMB_VFS_STRICT_UNLOCK(conn, fsp, &lock);
300 state->out_count = nwritten;
302 tevent_req_done(req);
303 return tevent_req_post(req, ev);
306 static void smbd_smb2_write_pipe_done(struct tevent_req *subreq)
308 struct tevent_req *req = tevent_req_callback_data(subreq,
310 struct smbd_smb2_write_state *state = tevent_req_data(req,
311 struct smbd_smb2_write_state);
313 ssize_t nwritten = -1;
315 status = np_write_recv(subreq, &nwritten);
317 if (!NT_STATUS_IS_OK(status)) {
318 tevent_req_nterror(req, status);
322 if ((nwritten == 0 && state->in_length != 0) || (nwritten < 0)) {
323 tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
327 state->out_count = nwritten;
329 tevent_req_done(req);
332 static NTSTATUS smbd_smb2_write_recv(struct tevent_req *req,
336 struct smbd_smb2_write_state *state = tevent_req_data(req,
337 struct smbd_smb2_write_state);
339 if (tevent_req_is_nterror(req, &status)) {
340 tevent_req_received(req);
344 *out_count = state->out_count;
346 tevent_req_received(req);