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72cabbbe50
metze Autobuild-User: Stefan Metzmacher <metze@samba.org> Autobuild-Date: Mon Nov 14 10:01:30 CET 2011 on sn-devel-104
190 lines
5.2 KiB
C
190 lines
5.2 KiB
C
/*
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Unix SMB/CIFS implementation.
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Core SMB2 server
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Copyright (C) Stefan Metzmacher 2009
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "includes.h"
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#include "smbd/smbd.h"
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#include "smbd/globals.h"
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#include "../libcli/smb/smb_common.h"
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#include "../lib/util/tevent_ntstatus.h"
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static struct tevent_req *smbd_smb2_flush_send(TALLOC_CTX *mem_ctx,
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struct tevent_context *ev,
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struct smbd_smb2_request *smb2req,
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uint64_t in_file_id_volatile);
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static NTSTATUS smbd_smb2_flush_recv(struct tevent_req *req);
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static void smbd_smb2_request_flush_done(struct tevent_req *subreq);
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NTSTATUS smbd_smb2_request_process_flush(struct smbd_smb2_request *req)
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{
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NTSTATUS status;
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const uint8_t *inbody;
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int i = req->current_idx;
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uint64_t in_file_id_persistent;
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uint64_t in_file_id_volatile;
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struct tevent_req *subreq;
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status = smbd_smb2_request_verify_sizes(req, 0x18);
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if (!NT_STATUS_IS_OK(status)) {
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return smbd_smb2_request_error(req, status);
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}
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inbody = (const uint8_t *)req->in.vector[i+1].iov_base;
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in_file_id_persistent = BVAL(inbody, 0x08);
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in_file_id_volatile = BVAL(inbody, 0x10);
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if (req->compat_chain_fsp) {
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/* skip check */
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} else if (in_file_id_persistent != in_file_id_volatile) {
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return smbd_smb2_request_error(req, NT_STATUS_FILE_CLOSED);
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}
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subreq = smbd_smb2_flush_send(req,
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req->sconn->smb2.event_ctx,
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req,
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in_file_id_volatile);
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if (subreq == NULL) {
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return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
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}
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tevent_req_set_callback(subreq, smbd_smb2_request_flush_done, req);
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return smbd_smb2_request_pending_queue(req, subreq);
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}
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static void smbd_smb2_request_flush_done(struct tevent_req *subreq)
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{
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struct smbd_smb2_request *req = tevent_req_callback_data(subreq,
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struct smbd_smb2_request);
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DATA_BLOB outbody;
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NTSTATUS status;
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NTSTATUS error; /* transport error */
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status = smbd_smb2_flush_recv(subreq);
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TALLOC_FREE(subreq);
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if (!NT_STATUS_IS_OK(status)) {
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error = smbd_smb2_request_error(req, status);
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if (!NT_STATUS_IS_OK(error)) {
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smbd_server_connection_terminate(req->sconn,
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nt_errstr(error));
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return;
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}
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return;
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}
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outbody = data_blob_talloc(req->out.vector, NULL, 0x04);
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if (outbody.data == NULL) {
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error = smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
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if (!NT_STATUS_IS_OK(error)) {
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smbd_server_connection_terminate(req->sconn,
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nt_errstr(error));
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return;
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}
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return;
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}
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SSVAL(outbody.data, 0x00, 0x04); /* struct size */
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SSVAL(outbody.data, 0x02, 0); /* reserved */
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error = smbd_smb2_request_done(req, outbody, NULL);
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if (!NT_STATUS_IS_OK(error)) {
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smbd_server_connection_terminate(req->sconn,
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nt_errstr(error));
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return;
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}
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}
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struct smbd_smb2_flush_state {
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struct smbd_smb2_request *smb2req;
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};
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static struct tevent_req *smbd_smb2_flush_send(TALLOC_CTX *mem_ctx,
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struct tevent_context *ev,
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struct smbd_smb2_request *smb2req,
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uint64_t in_file_id_volatile)
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{
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struct tevent_req *req;
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struct smbd_smb2_flush_state *state;
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NTSTATUS status;
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struct smb_request *smbreq;
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files_struct *fsp;
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req = tevent_req_create(mem_ctx, &state,
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struct smbd_smb2_flush_state);
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if (req == NULL) {
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return NULL;
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}
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state->smb2req = smb2req;
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DEBUG(10,("smbd_smb2_flush: file_id[0x%016llX]\n",
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(unsigned long long)in_file_id_volatile));
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smbreq = smbd_smb2_fake_smb_request(smb2req);
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if (tevent_req_nomem(smbreq, req)) {
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return tevent_req_post(req, ev);
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}
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if (IS_IPC(smbreq->conn)) {
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tevent_req_nterror(req, NT_STATUS_NOT_IMPLEMENTED);
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return tevent_req_post(req, ev);
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}
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fsp = file_fsp(smbreq, (uint16_t)in_file_id_volatile);
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if (fsp == NULL) {
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tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
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return tevent_req_post(req, ev);
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}
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if (smbreq->conn != fsp->conn) {
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tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
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return tevent_req_post(req, ev);
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}
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if (smb2req->session->vuid != fsp->vuid) {
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tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
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return tevent_req_post(req, ev);
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}
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if (!CHECK_WRITE(fsp)) {
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tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
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return tevent_req_post(req, ev);
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}
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status = sync_file(smbreq->conn, fsp, true);
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if (!NT_STATUS_IS_OK(status)) {
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DEBUG(5,("smbd_smb2_flush: sync_file for %s returned %s\n",
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fsp_str_dbg(fsp), nt_errstr(status)));
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tevent_req_nterror(req, status);
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return tevent_req_post(req, ev);
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}
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tevent_req_done(req);
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return tevent_req_post(req, ev);
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}
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static NTSTATUS smbd_smb2_flush_recv(struct tevent_req *req)
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{
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NTSTATUS status;
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if (tevent_req_is_nterror(req, &status)) {
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tevent_req_received(req);
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return status;
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}
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tevent_req_received(req);
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return NT_STATUS_OK;
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}
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