source: branches/samba-3.5.x/source3/smbd/smb2_flush.c

Last change on this file was 414, checked in by Herwig Bauernfeind, 15 years ago

Samba 3.5.0: Initial import
File size: 5.4 KB
Line 
1/*
2 Unix SMB/CIFS implementation.
3 Core SMB2 server
4
5 Copyright (C) Stefan Metzmacher 2009
6
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.
11
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.
16
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/>.
19*/
20
21#include "includes.h"
22#include "smbd/globals.h"
23#include "../libcli/smb/smb_common.h"
24
25static struct tevent_req *smbd_smb2_flush_send(TALLOC_CTX *mem_ctx,
26 struct tevent_context *ev,
27 struct smbd_smb2_request *smb2req,
28 uint64_t in_file_id_volatile);
29static NTSTATUS smbd_smb2_flush_recv(struct tevent_req *req);
30
31static void smbd_smb2_request_flush_done(struct tevent_req *subreq);
32NTSTATUS smbd_smb2_request_process_flush(struct smbd_smb2_request *req)
33{
34 const uint8_t *inhdr;
35 const uint8_t *inbody;
36 int i = req->current_idx;
37 size_t expected_body_size = 0x18;
38 size_t body_size;
39 uint64_t in_file_id_persistent;
40 uint64_t in_file_id_volatile;
41 struct tevent_req *subreq;
42
43 inhdr = (const uint8_t *)req->in.vector[i+0].iov_base;
44 if (req->in.vector[i+1].iov_len != (expected_body_size & 0xFFFFFFFE)) {
45 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
46 }
47
48 inbody = (const uint8_t *)req->in.vector[i+1].iov_base;
49
50 body_size = SVAL(inbody, 0x00);
51 if (body_size != expected_body_size) {
52 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
53 }
54
55 in_file_id_persistent = BVAL(inbody, 0x08);
56 in_file_id_volatile = BVAL(inbody, 0x10);
57
58 if (req->compat_chain_fsp) {
59 /* skip check */
60 } else if (in_file_id_persistent != 0) {
61 return smbd_smb2_request_error(req, NT_STATUS_FILE_CLOSED);
62 }
63
64 subreq = smbd_smb2_flush_send(req,
65 req->sconn->smb2.event_ctx,
66 req,
67 in_file_id_volatile);
68 if (subreq == NULL) {
69 return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
70 }
71 tevent_req_set_callback(subreq, smbd_smb2_request_flush_done, req);
72
73 return smbd_smb2_request_pending_queue(req, subreq);
74}
75
76static void smbd_smb2_request_flush_done(struct tevent_req *subreq)
77{
78 struct smbd_smb2_request *req = tevent_req_callback_data(subreq,
79 struct smbd_smb2_request);
80 DATA_BLOB outbody;
81 NTSTATUS status;
82 NTSTATUS error; /* transport error */
83
84 status = smbd_smb2_flush_recv(subreq);
85 TALLOC_FREE(subreq);
86 if (!NT_STATUS_IS_OK(status)) {
87 error = smbd_smb2_request_error(req, status);
88 if (!NT_STATUS_IS_OK(error)) {
89 smbd_server_connection_terminate(req->sconn,
90 nt_errstr(error));
91 return;
92 }
93 return;
94 }
95
96 outbody = data_blob_talloc(req->out.vector, NULL, 0x10);
97 if (outbody.data == NULL) {
98 error = smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
99 if (!NT_STATUS_IS_OK(error)) {
100 smbd_server_connection_terminate(req->sconn,
101 nt_errstr(error));
102 return;
103 }
104 return;
105 }
106
107 SSVAL(outbody.data, 0x00, 0x04); /* struct size */
108 SSVAL(outbody.data, 0x02, 0); /* reserved */
109
110 error = smbd_smb2_request_done(req, outbody, NULL);
111 if (!NT_STATUS_IS_OK(error)) {
112 smbd_server_connection_terminate(req->sconn,
113 nt_errstr(error));
114 return;
115 }
116}
117
118struct smbd_smb2_flush_state {
119 struct smbd_smb2_request *smb2req;
120};
121
122static struct tevent_req *smbd_smb2_flush_send(TALLOC_CTX *mem_ctx,
123 struct tevent_context *ev,
124 struct smbd_smb2_request *smb2req,
125 uint64_t in_file_id_volatile)
126{
127 struct tevent_req *req;
128 struct smbd_smb2_flush_state *state;
129 NTSTATUS status;
130 struct smb_request *smbreq;
131 files_struct *fsp;
132
133 req = tevent_req_create(mem_ctx, &state,
134 struct smbd_smb2_flush_state);
135 if (req == NULL) {
136 return NULL;
137 }
138 state->smb2req = smb2req;
139
140 DEBUG(10,("smbd_smb2_flush: file_id[0x%016llX]\n",
141 (unsigned long long)in_file_id_volatile));
142
143 smbreq = smbd_smb2_fake_smb_request(smb2req);
144 if (tevent_req_nomem(smbreq, req)) {
145 return tevent_req_post(req, ev);
146 }
147
148 if (IS_IPC(smbreq->conn)) {
149 tevent_req_nterror(req, NT_STATUS_NOT_IMPLEMENTED);
150 return tevent_req_post(req, ev);
151 }
152
153 fsp = file_fsp(smbreq, (uint16_t)in_file_id_volatile);
154 if (fsp == NULL) {
155 tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
156 return tevent_req_post(req, ev);
157 }
158 if (smbreq->conn != fsp->conn) {
159 tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
160 return tevent_req_post(req, ev);
161 }
162 if (smb2req->session->vuid != fsp->vuid) {
163 tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
164 return tevent_req_post(req, ev);
165 }
166
167 if (!CHECK_WRITE(fsp)) {
168 tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
169 return tevent_req_post(req, ev);
170 }
171
172 status = sync_file(smbreq->conn, fsp, true);
173 if (!NT_STATUS_IS_OK(status)) {
174 DEBUG(5,("smbd_smb2_flush: sync_file for %s returned %s\n",
175 fsp_str_dbg(fsp), nt_errstr(status)));
176 tevent_req_nterror(req, status);
177 return tevent_req_post(req, ev);
178 }
179
180 tevent_req_done(req);
181 return tevent_req_post(req, ev);
182}
183
184static NTSTATUS smbd_smb2_flush_recv(struct tevent_req *req)
185{
186 NTSTATUS status;
187
188 if (tevent_req_is_nterror(req, &status)) {
189 tevent_req_received(req);
190 return status;
191 }
192
193 tevent_req_received(req);
194 return NT_STATUS_OK;
195}
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