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/*
Unix SMB/CIFS implementation.
Core SMB2 server
Copyright (C) Stefan Metzmacher 2009
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
#include "smbd/globals.h"
#include "../source4/libcli/smb2/smb2_constants.h"
static NTSTATUS smbd_smb2_flush(struct smbd_smb2_request *req,
uint64_t in_file_id_volatile);
NTSTATUS smbd_smb2_request_process_flush(struct smbd_smb2_request *req)
{
const uint8_t *inhdr;
const uint8_t *inbody;
int i = req->current_idx;
DATA_BLOB outbody;
size_t expected_body_size = 0x18;
size_t body_size;
uint64_t in_file_id_persistent;
uint64_t in_file_id_volatile;
NTSTATUS status;
inhdr = (const uint8_t *)req->in.vector[i+0].iov_base;
if (req->in.vector[i+1].iov_len != (expected_body_size & 0xFFFFFFFE)) {
return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
}
inbody = (const uint8_t *)req->in.vector[i+1].iov_base;
body_size = SVAL(inbody, 0x00);
if (body_size != expected_body_size) {
return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
}
in_file_id_persistent = BVAL(inbody, 0x08);
in_file_id_volatile = BVAL(inbody, 0x10);
if (in_file_id_persistent != 0) {
return smbd_smb2_request_error(req, NT_STATUS_FILE_CLOSED);
}
status = smbd_smb2_flush(req,
in_file_id_volatile);
if (!NT_STATUS_IS_OK(status)) {
return smbd_smb2_request_error(req, status);
}
outbody = data_blob_talloc(req->out.vector, NULL, 0x10);
if (outbody.data == NULL) {
return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
}
SSVAL(outbody.data, 0x00, 0x04); /* struct size */
SSVAL(outbody.data, 0x02, 0); /* reserved */
return smbd_smb2_request_done(req, outbody, NULL);
}
static NTSTATUS smbd_smb2_flush(struct smbd_smb2_request *req,
uint64_t in_file_id_volatile)
{
NTSTATUS status;
struct smb_request *smbreq;
connection_struct *conn = req->tcon->compat_conn;
files_struct *fsp;
DEBUG(10,("smbd_smb2_flush: file_id[0x%016llX]\n",
(unsigned long long)in_file_id_volatile));
smbreq = smbd_smb2_fake_smb_request(req);
if (smbreq == NULL) {
return NT_STATUS_NO_MEMORY;
}
/* If it's an IPC, pass off the pipe handler. */
if (IS_IPC(conn)) {
return NT_STATUS_NOT_IMPLEMENTED;
}
fsp = file_fsp(smbreq, (uint16_t)in_file_id_volatile);
if (fsp == NULL) {
return NT_STATUS_FILE_CLOSED;
}
if (conn != fsp->conn) {
return NT_STATUS_FILE_CLOSED;
}
if (req->session->vuid != fsp->vuid) {
return NT_STATUS_FILE_CLOSED;
}
if (!CHECK_WRITE(fsp)) {
return NT_STATUS_ACCESS_DENIED;
}
status = sync_file(conn, fsp, true);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(5,("smbd_smb2_flush: sync_file for %s returned %s\n",
fsp->fsp_name, nt_errstr(status)));
return status;
}
return NT_STATUS_OK;
}
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