linux.h

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/* -*- C -*- */
/*
 * Copyright (c) 2012-2020 Seagate Technology LLC and/or its Affiliates
 *
 * 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.
 *
 * For any questions about this software or licensing,
 * please email opensource@seagate.com or cortx-questions@seagate.com.
 *
 */


#pragma once

#ifndef __MOTR_STOB_LINUX_H__
#define __MOTR_STOB_LINUX_H__

#include "sm/sm.h"              /* m0_sm_ast */
#include "stob/stob.h"          /* m0_stob_type */
#include "stob/domain.h"        /* m0_stob_domain */
#include "stob/ioq.h"           /* m0_stob_ioq */

struct m0_stob_linux_domain_cfg {
        mode_t sldc_file_mode;
        int    sldc_file_flags;
        bool   sldc_use_directio;
};

struct m0_stob_linux_domain {
        struct m0_stob_domain            sld_dom;
        struct m0_stob_ioq               sld_ioq;
        char                            *sld_path;
        struct m0_stob_linux_domain_cfg  sld_cfg;
};

struct m0_stob_linux {
        struct m0_stob               sl_stob;
        struct m0_stob_linux_domain *sl_dom;
        int                          sl_fd;
        mode_t                       sl_mode;
        struct m0_fid                sl_conf_sdev;
};

M0_INTERNAL struct m0_stob_linux *m0_stob_linux_container(struct m0_stob *stob);
M0_INTERNAL struct m0_stob_linux_domain *
m0_stob_linux_domain_container(struct m0_stob_domain *dom);

M0_INTERNAL int m0_stob_linux_reopen(struct m0_stob_id *stob_id,
                                     const char *f_path);

M0_INTERNAL void
m0_stob_linux_conf_sdev_associate(struct m0_stob      *stob,
                                  const struct m0_fid *conf_sdev);

M0_INTERNAL int
m0_stob_linux_domain_fd_get(struct m0_stob_domain *dom, int *fd);

M0_INTERNAL int m0_stob_linux_domain_fd_put(struct m0_stob_domain *dom, int fd);

M0_INTERNAL bool m0_stob_linux_domain_directio(struct m0_stob_domain *dom);

extern const struct m0_stob_type m0_stob_linux_type;

#endif /* __MOTR_STOB_LINUX_H__ */

/*
 *  Local variables:
 *  c-indentation-style: "K&R"
 *  c-basic-offset: 8
 *  tab-width: 8
 *  fill-column: 80
 *  scroll-step: 1
 *  End:
 */