staging/lustre/obdclass: remove lu_ucred.c

	      lustre_handles.o lustre_peer.o llog_osd.o \

	      local_storage.o statfs_pack.o obdo.o obd_config.o obd_mount.o\

	      mea.o lu_object.o dt_object.o capa.o cl_object.o   \

	      cl_page.o cl_lock.o cl_io.o lu_ref.o acl.o \

	      lu_ucred.o

	      cl_page.o cl_lock.o cl_io.o lu_ref.o acl.o

/*

 * 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/obdclass/lu_ucred.c

 *

 * Lustre user credentials context infrastructure.

 *

 *   Author: Nikita Danilov <nikita.danilov@sun.com>

 *   Author: Fan Yong <fan.yong@intel.com>

 *   Author: Vitaly Fertman <vitaly_fertman@xyratex.com>

 */

#define DEBUG_SUBSYSTEM S_CLASS

#include "../../include/linux/libcfs/libcfs.h"

#include "../include/obd_support.h"

#include "../include/lu_object.h"

#include "../include/md_object.h"

/* context key constructor/destructor: lu_ucred_key_init, lu_ucred_key_fini */

LU_KEY_INIT_FINI(lu_ucred, struct lu_ucred);

static struct lu_context_key lu_ucred_key = {

	.lct_tags = LCT_SESSION,

	.lct_init = lu_ucred_key_init,

	.lct_fini = lu_ucred_key_fini

};

/**

 * Get ucred key if session exists and ucred key is allocated on it.

 * Return NULL otherwise.

 */

struct lu_ucred *lu_ucred(const struct lu_env *env)

{

	if (!env->le_ses)

		return NULL;

	return lu_context_key_get(env->le_ses, &lu_ucred_key);

}

EXPORT_SYMBOL(lu_ucred);

/**

 * Get ucred key and check if it is properly initialized.

 * Return NULL otherwise.

 */

struct lu_ucred *lu_ucred_check(const struct lu_env *env)

{

	struct lu_ucred *uc = lu_ucred(env);

	if (uc && uc->uc_valid != UCRED_OLD && uc->uc_valid != UCRED_NEW)

		return NULL;

	return uc;

}

EXPORT_SYMBOL(lu_ucred_check);

/**

 * Get ucred key, which must exist and must be properly initialized.

 * Assert otherwise.

 */

struct lu_ucred *lu_ucred_assert(const struct lu_env *env)

{

	struct lu_ucred *uc = lu_ucred_check(env);

	LASSERT(uc != NULL);

	return uc;

}

EXPORT_SYMBOL(lu_ucred_assert);

int lu_ucred_global_init(void)

{

	LU_CONTEXT_KEY_INIT(&lu_ucred_key);

	return lu_context_key_register(&lu_ucred_key);

}

void lu_ucred_global_fini(void)

{

	lu_context_key_degister(&lu_ucred_key);

}