source: vendor/3.6.0/source3/smbd/smb2_flush.c

Last change on this file was 740, checked in by Silvan Scherrer, 13 years ago

Samba Server: update vendor to 3.6.0
File size: 5.6 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/smbd.h"
23#include "smbd/globals.h"
24#include "../libcli/smb/smb_common.h"
25#include "../lib/util/tevent_ntstatus.h"
26
27static struct tevent_req *smbd_smb2_flush_send(TALLOC_CTX *mem_ctx,
28 struct tevent_context *ev,
29 struct smbd_smb2_request *smb2req,
30 uint64_t in_file_id_volatile);
31static NTSTATUS smbd_smb2_flush_recv(struct tevent_req *req);
32
33static void smbd_smb2_request_flush_done(struct tevent_req *subreq);
34NTSTATUS smbd_smb2_request_process_flush(struct smbd_smb2_request *req)
35{
36 const uint8_t *inhdr;
37 const uint8_t *inbody;
38 int i = req->current_idx;
39 size_t expected_body_size = 0x18;
40 size_t body_size;
41 uint64_t in_file_id_persistent;
42 uint64_t in_file_id_volatile;
43 struct tevent_req *subreq;
44
45 inhdr = (const uint8_t *)req->in.vector[i+0].iov_base;
46 if (req->in.vector[i+1].iov_len != (expected_body_size & 0xFFFFFFFE)) {
47 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
48 }
49
50 inbody = (const uint8_t *)req->in.vector[i+1].iov_base;
51
52 body_size = SVAL(inbody, 0x00);
53 if (body_size != expected_body_size) {
54 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
55 }
56
57 in_file_id_persistent = BVAL(inbody, 0x08);
58 in_file_id_volatile = BVAL(inbody, 0x10);
59
60 if (req->compat_chain_fsp) {
61 /* skip check */
62 } else if (in_file_id_persistent != in_file_id_volatile) {
63 return smbd_smb2_request_error(req, NT_STATUS_FILE_CLOSED);
64 }
65
66 subreq = smbd_smb2_flush_send(req,
67 req->sconn->smb2.event_ctx,
68 req,
69 in_file_id_volatile);
70 if (subreq == NULL) {
71 return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
72 }
73 tevent_req_set_callback(subreq, smbd_smb2_request_flush_done, req);
74
75 return smbd_smb2_request_pending_queue(req, subreq);
76}
77
78static void smbd_smb2_request_flush_done(struct tevent_req *subreq)
79{
80 struct smbd_smb2_request *req = tevent_req_callback_data(subreq,
81 struct smbd_smb2_request);
82 DATA_BLOB outbody;
83 NTSTATUS status;
84 NTSTATUS error; /* transport error */
85
86 status = smbd_smb2_flush_recv(subreq);
87 TALLOC_FREE(subreq);
88 if (!NT_STATUS_IS_OK(status)) {
89 error = smbd_smb2_request_error(req, status);
90 if (!NT_STATUS_IS_OK(error)) {
91 smbd_server_connection_terminate(req->sconn,
92 nt_errstr(error));
93 return;
94 }
95 return;
96 }
97
98 outbody = data_blob_talloc(req->out.vector, NULL, 0x10);
99 if (outbody.data == NULL) {
100 error = smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
101 if (!NT_STATUS_IS_OK(error)) {
102 smbd_server_connection_terminate(req->sconn,
103 nt_errstr(error));
104 return;
105 }
106 return;
107 }
108
109 SSVAL(outbody.data, 0x00, 0x04); /* struct size */
110 SSVAL(outbody.data, 0x02, 0); /* reserved */
111
112 error = smbd_smb2_request_done(req, outbody, NULL);
113 if (!NT_STATUS_IS_OK(error)) {
114 smbd_server_connection_terminate(req->sconn,
115 nt_errstr(error));
116 return;
117 }
118}
119
120struct smbd_smb2_flush_state {
121 struct smbd_smb2_request *smb2req;
122};
123
124static struct tevent_req *smbd_smb2_flush_send(TALLOC_CTX *mem_ctx,
125 struct tevent_context *ev,
126 struct smbd_smb2_request *smb2req,
127 uint64_t in_file_id_volatile)
128{
129 struct tevent_req *req;
130 struct smbd_smb2_flush_state *state;
131 NTSTATUS status;
132 struct smb_request *smbreq;
133 files_struct *fsp;
134
135 req = tevent_req_create(mem_ctx, &state,
136 struct smbd_smb2_flush_state);
137 if (req == NULL) {
138 return NULL;
139 }
140 state->smb2req = smb2req;
141
142 DEBUG(10,("smbd_smb2_flush: file_id[0x%016llX]\n",
143 (unsigned long long)in_file_id_volatile));
144
145 smbreq = smbd_smb2_fake_smb_request(smb2req);
146 if (tevent_req_nomem(smbreq, req)) {
147 return tevent_req_post(req, ev);
148 }
149
150 if (IS_IPC(smbreq->conn)) {
151 tevent_req_nterror(req, NT_STATUS_NOT_IMPLEMENTED);
152 return tevent_req_post(req, ev);
153 }
154
155 fsp = file_fsp(smbreq, (uint16_t)in_file_id_volatile);
156 if (fsp == NULL) {
157 tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
158 return tevent_req_post(req, ev);
159 }
160 if (smbreq->conn != fsp->conn) {
161 tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
162 return tevent_req_post(req, ev);
163 }
164 if (smb2req->session->vuid != fsp->vuid) {
165 tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
166 return tevent_req_post(req, ev);
167 }
168
169 if (!CHECK_WRITE(fsp)) {
170 tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
171 return tevent_req_post(req, ev);
172 }
173
174 status = sync_file(smbreq->conn, fsp, true);
175 if (!NT_STATUS_IS_OK(status)) {
176 DEBUG(5,("smbd_smb2_flush: sync_file for %s returned %s\n",
177 fsp_str_dbg(fsp), nt_errstr(status)));
178 tevent_req_nterror(req, status);
179 return tevent_req_post(req, ev);
180 }
181
182 tevent_req_done(req);
183 return tevent_req_post(req, ev);
184}
185
186static NTSTATUS smbd_smb2_flush_recv(struct tevent_req *req)
187{
188 NTSTATUS status;
189
190 if (tevent_req_is_nterror(req, &status)) {
191 tevent_req_received(req);
192 return status;
193 }
194
195 tevent_req_received(req);
196 return NT_STATUS_OK;
197}
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