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3884a66e17
Subsequent commits that are going to track aio request duration in the aio backends will use this. Signed-off-by: Ralph Boehme <slow@samba.org> Reviewed-by: Jeremy Allison <jra@samba.org>
219 lines
5.7 KiB
C
219 lines
5.7 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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struct files_struct *fsp);
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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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uint64_t in_file_id_persistent;
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uint64_t in_file_id_volatile;
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struct files_struct *in_fsp;
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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 = SMBD_SMB2_IN_BODY_PTR(req);
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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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in_fsp = file_fsp_smb2(req, in_file_id_persistent, in_file_id_volatile);
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if (in_fsp == NULL) {
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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, req->sconn->ev_ctx,
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req, in_fsp);
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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, 500);
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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->xconn,
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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 = smbd_smb2_generate_outbody(req, 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->xconn,
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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->xconn,
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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 void smbd_smb2_flush_done(struct tevent_req *subreq);
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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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struct files_struct *fsp)
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{
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struct tevent_req *req;
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struct tevent_req *subreq;
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struct smbd_smb2_flush_state *state;
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struct smb_request *smbreq;
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int ret;
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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: %s - %s\n",
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fsp_str_dbg(fsp), fsp_fnum_dbg(fsp)));
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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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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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if (fsp->fh->fd == -1) {
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tevent_req_nterror(req, NT_STATUS_INVALID_HANDLE);
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return tevent_req_post(req, ev);
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}
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if (!lp_strict_sync(SNUM(smbreq->conn))) {
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/*
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* No strict sync. Don't really do
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* anything here.
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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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ret = flush_write_cache(fsp, SAMBA_SYNC_FLUSH);
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if (ret == -1) {
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tevent_req_nterror(req, map_nt_error_from_unix(errno));
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return tevent_req_post(req, ev);
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}
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subreq = SMB_VFS_FSYNC_SEND(state, ev, fsp);
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if (tevent_req_nomem(subreq, req)) {
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return tevent_req_post(req, ev);
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}
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tevent_req_set_callback(subreq, smbd_smb2_flush_done, req);
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/* Ensure any close request knows about this outstanding IO. */
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if (!aio_add_req_to_fsp(fsp, req)) {
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tevent_req_nterror(req, NT_STATUS_NO_MEMORY);
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return tevent_req_post(req, ev);
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}
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increment_outstanding_aio_calls();
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return req;
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}
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static void smbd_smb2_flush_done(struct tevent_req *subreq)
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{
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struct tevent_req *req = tevent_req_callback_data(
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subreq, struct tevent_req);
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int ret;
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struct vfs_aio_state vfs_aio_state;
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decrement_outstanding_aio_calls();
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ret = SMB_VFS_FSYNC_RECV(subreq, &vfs_aio_state);
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TALLOC_FREE(subreq);
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if (ret == -1) {
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tevent_req_error(req, vfs_aio_state.error);
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return;
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}
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tevent_req_done(req);
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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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