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log.h
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log.h
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/* Copyright (c) 2009, 2010, 2011 Nicira, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef OVSDB_LOG_H
#define OVSDB_LOG_H 1
#include <sys/types.h>
#include "compiler.h"
struct json;
struct ovsdb_log;
/* Access mode for opening an OVSDB log. */
enum ovsdb_log_open_mode {
OVSDB_LOG_READ_ONLY, /* Open existing file, read-only. */
OVSDB_LOG_READ_WRITE, /* Open existing file, read/write. */
OVSDB_LOG_CREATE /* Create new file, read/write. */
};
struct ovsdb_error *ovsdb_log_open(const char *name, enum ovsdb_log_open_mode,
int locking, struct ovsdb_log **)
OVS_WARN_UNUSED_RESULT;
void ovsdb_log_close(struct ovsdb_log *);
struct ovsdb_error *ovsdb_log_read(struct ovsdb_log *, struct json **)
OVS_WARN_UNUSED_RESULT;
void ovsdb_log_unread(struct ovsdb_log *);
struct ovsdb_error *ovsdb_log_write(struct ovsdb_log *, struct json *)
OVS_WARN_UNUSED_RESULT;
struct ovsdb_error *ovsdb_log_commit(struct ovsdb_log *)
OVS_WARN_UNUSED_RESULT;
off_t ovsdb_log_get_offset(const struct ovsdb_log *);
#endif /* ovsdb/log.h */