1 /*
   2  * lcnalloc.h - Exports for cluster (de)allocation. Part of the Linux-NTFS
   3  *              project.
   4  *
   5  * Copyright (c) 2002 Anton Altaparmakov
   6  * Copyright (c) 2004 Yura Pakhuchiy
   7  *
   8  * This program/include file is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License as published
  10  * by the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program/include file is distributed in the hope that it will be
  14  * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
  15  * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program (in the main directory of the Linux-NTFS
  20  * distribution in the file COPYING); if not, write to the Free Software
  21  * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  22  */
  23 
  24 #ifndef _NTFS_LCNALLOC_H
  25 #define _NTFS_LCNALLOC_H
  26 
  27 #include "types.h"
  28 #include "runlist.h"
  29 #include "volume.h"
  30 
  31 /**
  32  * enum NTFS_CLUSTER_ALLOCATION_ZONES -
  33  */
  34 typedef enum {
  35         FIRST_ZONE      = 0,    /* For sanity checking. */
  36         MFT_ZONE        = 0,    /* Allocate from $MFT zone. */
  37         DATA_ZONE       = 1,    /* Allocate from $DATA zone. */
  38         LAST_ZONE       = 1,    /* For sanity checking. */
  39 } NTFS_CLUSTER_ALLOCATION_ZONES;
  40 
  41 extern runlist *ntfs_cluster_alloc(ntfs_volume *vol, VCN start_vcn, s64 count,
  42                 LCN start_lcn, const NTFS_CLUSTER_ALLOCATION_ZONES zone);
  43 
  44 extern int ntfs_cluster_free_from_rl(ntfs_volume *vol, runlist *rl);
  45 
  46 extern int ntfs_cluster_free(ntfs_volume *vol, ntfs_attr *na, VCN start_vcn,
  47                 s64 count);
  48 
  49 #endif /* defined _NTFS_LCNALLOC_H */
  50