staging: lustre: mgc: remove unused file

/*

 * GPL HEADER START

 *

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 only,

 * as published by the Free Software Foundation.

 *

 * 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 version 2 for more details (a copy is included

 * in the LICENSE file that accompanied this code).

 *

 * You should have received a copy of the GNU General Public License

 * version 2 along with this program; If not, see

 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf

 *

 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 * CA 95054 USA or visit www.sun.com if you need additional information or

 * have any questions.

 *

 * GPL HEADER END

 */

/*

 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.

 * Use is subject to license terms.

 *

 * Copyright (c) 2011, 2012, Intel Corporation.

 */

/*

 * This file is part of Lustre, http://www.lustre.org/

 * Lustre is a trademark of Sun Microsystems, Inc.

 *

 * lustre/mgc/libmgc.c

 *

 * Lustre Management Client

 * Author: Nathan Rutman <nathan@clusterfs.com>

 */

/* Minimal MGC for liblustre: only used to read the config log from the MGS

   at setup time, no updates. */

#define DEBUG_SUBSYSTEM S_MGC

#include "../include/liblustre.h"

#include "../include/obd_class.h"

#include "../include/lustre_dlm.h"

#include "../include/lustre_log.h"

#include "../include/lustre_fsfilt.h"

#include "../include/lustre_disk.h"

static int mgc_setup(struct obd_device *obd, struct lustre_cfg *lcfg)

{

	int rc;

	ptlrpcd_addref();

	rc = client_obd_setup(obd, lcfg);

	if (rc)

		GOTO(err_decref, rc);

	/* liblustre only support null flavor to MGS */

	obd->u.cli.cl_flvr_mgc.sf_rpc = SPTLRPC_FLVR_NULL;

	rc = obd_llog_init(obd, &obd->obd_olg, obd, NULL);

	if (rc) {

		CERROR("failed to setup llogging subsystems\n");

		GOTO(err_cleanup, rc);

	}

	return rc;

err_cleanup:

	client_obd_cleanup(obd);

err_decref:

	ptlrpcd_decref();

	return rc;

}

static int mgc_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage)

{

	int rc = 0;

	switch (stage) {

	case OBD_CLEANUP_EARLY:

	case OBD_CLEANUP_EXPORTS:

		obd_cleanup_client_import(obd);

		rc = obd_llog_finish(obd, 0);

		if (rc != 0)

			CERROR("failed to cleanup llogging subsystems\n");

		break;

	}

	return rc;

}

static int mgc_cleanup(struct obd_device *obd)

{

	int rc;

	ptlrpcd_decref();

	rc = client_obd_cleanup(obd);

	return rc;

}

static int mgc_llog_init(struct obd_device *obd, struct obd_llog_group *olg,

			 struct obd_device *tgt, int *index)

{

	struct llog_ctxt *ctxt;

	int rc;

	LASSERT(olg == &obd->obd_olg);

	rc = llog_setup(NULL, obd, olg, LLOG_CONFIG_REPL_CTXT, tgt,

			&llog_client_ops);

	if (rc < 0)

		return rc;

	ctxt = llog_group_get_ctxt(olg, LLOG_CONFIG_REPL_CTXT);

	llog_initiator_connect(ctxt);

	llog_ctxt_put(ctxt);

	return rc;

}

static int mgc_llog_finish(struct obd_device *obd, int count)

{

	struct llog_ctxt *ctxt;

	ctxt = llog_get_context(obd, LLOG_CONFIG_REPL_CTXT);

	if (ctxt)

		llog_cleanup(NULL, ctxt);

	return 0;

}

struct obd_ops mgc_obd_ops = {

	.o_owner	= THIS_MODULE,

	.o_setup	= mgc_setup,

	.o_precleanup   = mgc_precleanup,

	.o_cleanup      = mgc_cleanup,

	.o_add_conn     = client_import_add_conn,

	.o_del_conn     = client_import_del_conn,

	.o_connect      = client_connect_import,

	.o_disconnect   = client_disconnect_export,

	.o_llog_init    = mgc_llog_init,

	.o_llog_finish  = mgc_llog_finish,

};

int __init mgc_init(void)

{

	return class_register_type(&mgc_obd_ops, NULL,

				   NULL, LUSTRE_MGC_NAME, NULL);

}