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/*

 * Copyright (c) 2000 Silicon Graphics, Inc.  All Rights Reserved.

 *

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

 * under the terms of version 2 of the GNU General Public License as

 * published by the Free Software Foundation.

 *

 * This program is distributed in the hope that it would be useful, but

 * WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

 *

 * Further, this software is distributed without any warranty that it is

 * free of the rightful claim of any third person regarding infringement

 * or the like.  Any license provided herein, whether implied or

 * otherwise, applies only to this software file.  Patent licenses, if

 * any, provided herein do not apply to combinations of this program with

 * other software, or any other product whatsoever.

 *

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

 * with this program; if not, write the Free Software Foundation, Inc., 59

 * Temple Place - Suite 330, Boston MA 02111-1307, USA.

 *

 * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,

 * Mountain View, CA  94043, or:

 *

 * http://www.sgi.com

 *

 * For further information regarding this notice, see:

 *

 * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/

 */

#include "xfs.h"

#include "xfs_macros.h"

#include "xfs_types.h"

#include "xfs_inum.h"

#include "xfs_log.h"

#include "xfs_trans.h"

#include "xfs_sb.h"

#include "xfs_dir.h"

#include "xfs_dmapi.h"

#include "xfs_mount.h"

#include "xfs_trans_priv.h"

#include "xfs_extfree_item.h"

/*

 * This routine is called to allocate an "extent free intention"

 * log item that will hold nextents worth of extents.  The

 * caller must use all nextents extents, because we are not

 * flexible about this at all.

 */

xfs_efi_log_item_t *

xfs_trans_get_efi(xfs_trans_t   *tp,

                  uint          nextents)

{

        xfs_efi_log_item_t      *efip;

        ASSERT(tp != NULL);

        ASSERT(nextents > 0);

        efip = xfs_efi_init(tp->t_mountp, nextents);

        ASSERT(efip != NULL);

        /*

         * Get a log_item_desc to point at the new item.

         */

        (void) xfs_trans_add_item(tp, (xfs_log_item_t*)efip);

        return (efip);

}

/*

 * This routine is called to indicate that the described

 * extent is to be logged as needing to be freed.  It should

 * be called once for each extent to be freed.

 */

void

xfs_trans_log_efi_extent(xfs_trans_t            *tp,

                         xfs_efi_log_item_t     *efip,

                         xfs_fsblock_t          start_block,

                         xfs_extlen_t           ext_len)

{

        xfs_log_item_desc_t     *lidp;

        uint                    next_extent;

        xfs_extent_t            *extp;

        lidp = xfs_trans_find_item(tp, (xfs_log_item_t*)efip);

        ASSERT(lidp != NULL);

        tp->t_flags |= XFS_TRANS_DIRTY;

        lidp->lid_flags |= XFS_LID_DIRTY;

        next_extent = efip->efi_next_extent;

        ASSERT(next_extent < efip->efi_format.efi_nextents);

        extp = &(efip->efi_format.efi_extents[next_extent]);

        extp->ext_start = start_block;

        extp->ext_len = ext_len;

        efip->efi_next_extent++;

}

/*

 * This routine is called to allocate an "extent free done"

 * log item that will hold nextents worth of extents.  The

 * caller must use all nextents extents, because we are not

 * flexible about this at all.

 */

xfs_efd_log_item_t *

xfs_trans_get_efd(xfs_trans_t           *tp,

                  xfs_efi_log_item_t    *efip,

                  uint                  nextents)

{

        xfs_efd_log_item_t      *efdp;

        ASSERT(tp != NULL);

        ASSERT(nextents > 0);

        efdp = xfs_efd_init(tp->t_mountp, efip, nextents);

        ASSERT(efdp != NULL);

        /*

         * Get a log_item_desc to point at the new item.

         */

        (void) xfs_trans_add_item(tp, (xfs_log_item_t*)efdp);

        return (efdp);

}

/*

 * This routine is called to indicate that the described

 * extent is to be logged as having been freed.  It should

 * be called once for each extent freed.

 */

void

xfs_trans_log_efd_extent(xfs_trans_t            *tp,

                         xfs_efd_log_item_t     *efdp,

                         xfs_fsblock_t          start_block,

                         xfs_extlen_t           ext_len)

{

        xfs_log_item_desc_t     *lidp;

        uint                    next_extent;

        xfs_extent_t            *extp;

        lidp = xfs_trans_find_item(tp, (xfs_log_item_t*)efdp);

        ASSERT(lidp != NULL);

        tp->t_flags |= XFS_TRANS_DIRTY;

        lidp->lid_flags |= XFS_LID_DIRTY;

        next_extent = efdp->efd_next_extent;

        ASSERT(next_extent < efdp->efd_format.efd_nextents);

        extp = &(efdp->efd_format.efd_extents[next_extent]);

        extp->ext_start = start_block;

        extp->ext_len = ext_len;

        efdp->efd_next_extent++;

}