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Rename: include/runlist.h -> include/ntfs/runlist.h 

(Logical change 1.280)
edge.strict_endians
cantab.net!aia21 2004-02-25 14:21:14 +00:00
parent d9b62e0a62
commit ea202b473f
1 changed files with 79 additions and 0 deletions
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include/ntfs/runlist.h
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/*
* runlist.h - Exports for runlist handling. Part of the Linux-NTFS project.
*
* Copyright (c) 2002 Anton Altaparmakov
* Copyright (c) 2002 Richard Russon
*
* This program/include file is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as published
* by the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program/include file 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 for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program (in the main directory of the Linux-NTFS
* distribution in the file COPYING); if not, write to the Free Software
* Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef _NTFS_RUNLIST_H
#define _NTFS_RUNLIST_H
#include "types.h"
/* Forward declarations */
typedef struct _runlist_element runlist_element;
typedef runlist_element runlist;
#include "attrib.h"
#include "volume.h"
/*
* runlist_element - in memory vcn to lcn mapping array element
* @vcn: starting vcn of the current array element
* @lcn: starting lcn of the current array element
* @length: length in clusters of the current array element
*
* The last vcn (in fact the last vcn + 1) is reached when length == 0.
*
* When lcn == -1 this means that the count vcns starting at vcn are not
* physically allocated (i.e. this is a hole / data is sparse).
*/
struct _runlist_element {/* In memory vcn to lcn mapping structure element. */
VCN vcn; /* vcn = Starting virtual cluster number. */
LCN lcn; /* lcn = Starting logical cluster number. */
s64 length; /* Run length in clusters. */
};
extern LCN ntfs_rl_vcn_to_lcn(const runlist_element *rl, const VCN vcn);
extern s64 ntfs_rl_pread(const ntfs_volume *vol, const runlist_element *rl,
const s64 pos, s64 count, void *b);
extern s64 ntfs_rl_pwrite(const ntfs_volume *vol, const runlist_element *rl,
const s64 pos, s64 count, void *b);
extern runlist_element *ntfs_runlists_merge(runlist_element *drl,
runlist_element *srl);
extern runlist_element *ntfs_mapping_pairs_decompress(const ntfs_volume *vol,
const ATTR_RECORD *attr, runlist_element *old_rl);
extern int ntfs_get_nr_significant_bytes(const s64 n);
extern int ntfs_get_size_for_mapping_pairs(const ntfs_volume *vol,
const runlist_element *rl);
extern int ntfs_write_significant_bytes(s8 *dst, const s8 *dst_max,
const s64 n);
extern int ntfs_mapping_pairs_build(const ntfs_volume *vol, s8 *dst,
const int dst_len, const runlist_element *rl);
extern int ntfs_rl_truncate(runlist **rl, const VCN start_vcn);
#endif /* defined _NTFS_RUNLIST_H */