vfs_gpfs: Move vfs_gpfs_lstat to nfs4_acls.c and rename function
[Samba.git] / libcli / smb / smb2cli_write.c
blob6d0a0aaaecb76d8bf41f8d3bdc3f90989a068bcc
1 /*
2 Unix SMB/CIFS implementation.
3 smb2 lib
4 Copyright (C) Volker Lendecke 2011
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>.
20 #include "includes.h"
21 #include "system/network.h"
22 #include "lib/util/tevent_ntstatus.h"
23 #include "smb_common.h"
24 #include "smbXcli_base.h"
26 struct smb2cli_write_state {
27 uint8_t fixed[48];
28 uint8_t dyn_pad[1];
29 uint32_t written;
32 static void smb2cli_write_done(struct tevent_req *subreq);
34 struct tevent_req *smb2cli_write_send(TALLOC_CTX *mem_ctx,
35 struct tevent_context *ev,
36 struct smbXcli_conn *conn,
37 uint32_t timeout_msec,
38 struct smbXcli_session *session,
39 struct smbXcli_tcon *tcon,
40 uint32_t length,
41 uint64_t offset,
42 uint64_t fid_persistent,
43 uint64_t fid_volatile,
44 uint32_t remaining_bytes,
45 uint32_t flags,
46 const uint8_t *data)
48 struct tevent_req *req, *subreq;
49 struct smb2cli_write_state *state;
50 uint8_t *fixed;
51 const uint8_t *dyn;
52 size_t dyn_len;
54 req = tevent_req_create(mem_ctx, &state,
55 struct smb2cli_write_state);
56 if (req == NULL) {
57 return NULL;
60 fixed = state->fixed;
62 SSVAL(fixed, 0, 49);
63 SSVAL(fixed, 2, SMB2_HDR_BODY + 48);
64 SIVAL(fixed, 4, length);
65 SBVAL(fixed, 8, offset);
66 SBVAL(fixed, 16, fid_persistent);
67 SBVAL(fixed, 24, fid_volatile);
68 SIVAL(fixed, 36, remaining_bytes);
69 SIVAL(fixed, 44, flags);
71 if (length > 0) {
72 dyn = data;
73 dyn_len = length;
74 } else {
75 dyn = state->dyn_pad;;
76 dyn_len = sizeof(state->dyn_pad);
79 subreq = smb2cli_req_send(state, ev, conn, SMB2_OP_WRITE,
80 0, 0, /* flags */
81 timeout_msec,
82 tcon,
83 session,
84 state->fixed, sizeof(state->fixed),
85 dyn, dyn_len,
86 0); /* max_dyn_len */
87 if (tevent_req_nomem(subreq, req)) {
88 return tevent_req_post(req, ev);
90 tevent_req_set_callback(subreq, smb2cli_write_done, req);
91 return req;
94 static void smb2cli_write_done(struct tevent_req *subreq)
96 struct tevent_req *req =
97 tevent_req_callback_data(subreq,
98 struct tevent_req);
99 struct smb2cli_write_state *state =
100 tevent_req_data(req,
101 struct smb2cli_write_state);
102 NTSTATUS status;
103 struct iovec *iov;
104 static const struct smb2cli_req_expected_response expected[] = {
106 .status = NT_STATUS_OK,
107 .body_size = 0x11
111 status = smb2cli_req_recv(subreq, state, &iov,
112 expected, ARRAY_SIZE(expected));
113 TALLOC_FREE(subreq);
114 if (tevent_req_nterror(req, status)) {
115 return;
117 state->written = IVAL(iov[1].iov_base, 4);
118 tevent_req_done(req);
121 NTSTATUS smb2cli_write_recv(struct tevent_req *req, uint32_t *written)
123 struct smb2cli_write_state *state =
124 tevent_req_data(req,
125 struct smb2cli_write_state);
126 NTSTATUS status;
128 if (tevent_req_is_nterror(req, &status)) {
129 tevent_req_received(req);
130 return status;
132 if (written) {
133 *written = state->written;
135 tevent_req_received(req);
136 return NT_STATUS_OK;
139 NTSTATUS smb2cli_write(struct smbXcli_conn *conn,
140 uint32_t timeout_msec,
141 struct smbXcli_session *session,
142 struct smbXcli_tcon *tcon,
143 uint32_t length,
144 uint64_t offset,
145 uint64_t fid_persistent,
146 uint64_t fid_volatile,
147 uint32_t remaining_bytes,
148 uint32_t flags,
149 const uint8_t *data,
150 uint32_t *written)
152 TALLOC_CTX *frame = talloc_stackframe();
153 struct tevent_context *ev;
154 struct tevent_req *req;
155 NTSTATUS status = NT_STATUS_NO_MEMORY;
157 if (smbXcli_conn_has_async_calls(conn)) {
159 * Can't use sync call while an async call is in flight
161 status = NT_STATUS_INVALID_PARAMETER;
162 goto fail;
164 ev = samba_tevent_context_init(frame);
165 if (ev == NULL) {
166 goto fail;
168 req = smb2cli_write_send(frame, ev, conn, timeout_msec,
169 session, tcon,
170 length, offset,
171 fid_persistent, fid_volatile,
172 remaining_bytes, flags, data);
173 if (req == NULL) {
174 goto fail;
176 if (!tevent_req_poll_ntstatus(req, ev, &status)) {
177 goto fail;
179 status = smb2cli_write_recv(req, written);
180 fail:
181 TALLOC_FREE(frame);
182 return status;