194 lines
4.5 KiB
C
194 lines
4.5 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/**
|
|
* ldm - Part of the Linux-NTFS project.
|
|
*
|
|
* Copyright (C) 2001,2002 Richard Russon <ldm@flatcap.org>
|
|
* Copyright (c) 2001-2007 Anton Altaparmakov
|
|
* Copyright (C) 2001,2002 Jakob Kemi <jakob.kemi@telia.com>
|
|
*
|
|
* Documentation is available at http://www.linux-ntfs.org/doku.php?id=downloads
|
|
*/
|
|
|
|
#ifndef _FS_PT_LDM_H_
|
|
#define _FS_PT_LDM_H_
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/list.h>
|
|
#include <linux/fs.h>
|
|
#include <asm/unaligned.h>
|
|
#include <asm/byteorder.h>
|
|
|
|
struct parsed_partitions;
|
|
|
|
/* Magic numbers in CPU format. */
|
|
#define MAGIC_VMDB 0x564D4442 /* VMDB */
|
|
#define MAGIC_VBLK 0x56424C4B /* VBLK */
|
|
#define MAGIC_PRIVHEAD 0x5052495648454144ULL /* PRIVHEAD */
|
|
#define MAGIC_TOCBLOCK 0x544F43424C4F434BULL /* TOCBLOCK */
|
|
|
|
/* The defined vblk types. */
|
|
#define VBLK_VOL5 0x51 /* Volume, version 5 */
|
|
#define VBLK_CMP3 0x32 /* Component, version 3 */
|
|
#define VBLK_PRT3 0x33 /* Partition, version 3 */
|
|
#define VBLK_DSK3 0x34 /* Disk, version 3 */
|
|
#define VBLK_DSK4 0x44 /* Disk, version 4 */
|
|
#define VBLK_DGR3 0x35 /* Disk Group, version 3 */
|
|
#define VBLK_DGR4 0x45 /* Disk Group, version 4 */
|
|
|
|
/* vblk flags indicating extra information will be present */
|
|
#define VBLK_FLAG_COMP_STRIPE 0x10
|
|
#define VBLK_FLAG_PART_INDEX 0x08
|
|
#define VBLK_FLAG_DGR3_IDS 0x08
|
|
#define VBLK_FLAG_DGR4_IDS 0x08
|
|
#define VBLK_FLAG_VOLU_ID1 0x08
|
|
#define VBLK_FLAG_VOLU_ID2 0x20
|
|
#define VBLK_FLAG_VOLU_SIZE 0x80
|
|
#define VBLK_FLAG_VOLU_DRIVE 0x02
|
|
|
|
/* size of a vblk's static parts */
|
|
#define VBLK_SIZE_HEAD 16
|
|
#define VBLK_SIZE_CMP3 22 /* Name and version */
|
|
#define VBLK_SIZE_DGR3 12
|
|
#define VBLK_SIZE_DGR4 44
|
|
#define VBLK_SIZE_DSK3 12
|
|
#define VBLK_SIZE_DSK4 45
|
|
#define VBLK_SIZE_PRT3 28
|
|
#define VBLK_SIZE_VOL5 58
|
|
|
|
/* component types */
|
|
#define COMP_STRIPE 0x01 /* Stripe-set */
|
|
#define COMP_BASIC 0x02 /* Basic disk */
|
|
#define COMP_RAID 0x03 /* Raid-set */
|
|
|
|
/* Other constants. */
|
|
#define LDM_DB_SIZE 2048 /* Size in sectors (= 1MiB). */
|
|
|
|
#define OFF_PRIV1 6 /* Offset of the first privhead
|
|
relative to the start of the
|
|
device in sectors */
|
|
|
|
/* Offsets to structures within the LDM Database in sectors. */
|
|
#define OFF_PRIV2 1856 /* Backup private headers. */
|
|
#define OFF_PRIV3 2047
|
|
|
|
#define OFF_TOCB1 1 /* Tables of contents. */
|
|
#define OFF_TOCB2 2
|
|
#define OFF_TOCB3 2045
|
|
#define OFF_TOCB4 2046
|
|
|
|
#define OFF_VMDB 17 /* List of partitions. */
|
|
|
|
#define LDM_PARTITION 0x42 /* Formerly SFS (Landis). */
|
|
|
|
#define TOC_BITMAP1 "config" /* Names of the two defined */
|
|
#define TOC_BITMAP2 "log" /* bitmaps in the TOCBLOCK. */
|
|
|
|
struct frag { /* VBLK Fragment handling */
|
|
struct list_head list;
|
|
u32 group;
|
|
u8 num; /* Total number of records */
|
|
u8 rec; /* This is record number n */
|
|
u8 map; /* Which portions are in use */
|
|
u8 data[];
|
|
};
|
|
|
|
/* In memory LDM database structures. */
|
|
|
|
struct privhead { /* Offsets and sizes are in sectors. */
|
|
u16 ver_major;
|
|
u16 ver_minor;
|
|
u64 logical_disk_start;
|
|
u64 logical_disk_size;
|
|
u64 config_start;
|
|
u64 config_size;
|
|
uuid_t disk_id;
|
|
};
|
|
|
|
struct tocblock { /* We have exactly two bitmaps. */
|
|
u8 bitmap1_name[16];
|
|
u64 bitmap1_start;
|
|
u64 bitmap1_size;
|
|
u8 bitmap2_name[16];
|
|
u64 bitmap2_start;
|
|
u64 bitmap2_size;
|
|
};
|
|
|
|
struct vmdb { /* VMDB: The database header */
|
|
u16 ver_major;
|
|
u16 ver_minor;
|
|
u32 vblk_size;
|
|
u32 vblk_offset;
|
|
u32 last_vblk_seq;
|
|
};
|
|
|
|
struct vblk_comp { /* VBLK Component */
|
|
u8 state[16];
|
|
u64 parent_id;
|
|
u8 type;
|
|
u8 children;
|
|
u16 chunksize;
|
|
};
|
|
|
|
struct vblk_dgrp { /* VBLK Disk Group */
|
|
u8 disk_id[64];
|
|
};
|
|
|
|
struct vblk_disk { /* VBLK Disk */
|
|
uuid_t disk_id;
|
|
u8 alt_name[128];
|
|
};
|
|
|
|
struct vblk_part { /* VBLK Partition */
|
|
u64 start;
|
|
u64 size; /* start, size and vol_off in sectors */
|
|
u64 volume_offset;
|
|
u64 parent_id;
|
|
u64 disk_id;
|
|
u8 partnum;
|
|
};
|
|
|
|
struct vblk_volu { /* VBLK Volume */
|
|
u8 volume_type[16];
|
|
u8 volume_state[16];
|
|
u8 guid[16];
|
|
u8 drive_hint[4];
|
|
u64 size;
|
|
u8 partition_type;
|
|
};
|
|
|
|
struct vblk_head { /* VBLK standard header */
|
|
u32 group;
|
|
u16 rec;
|
|
u16 nrec;
|
|
};
|
|
|
|
struct vblk { /* Generalised VBLK */
|
|
u8 name[64];
|
|
u64 obj_id;
|
|
u32 sequence;
|
|
u8 flags;
|
|
u8 type;
|
|
union {
|
|
struct vblk_comp comp;
|
|
struct vblk_dgrp dgrp;
|
|
struct vblk_disk disk;
|
|
struct vblk_part part;
|
|
struct vblk_volu volu;
|
|
} vblk;
|
|
struct list_head list;
|
|
};
|
|
|
|
struct ldmdb { /* Cache of the database */
|
|
struct privhead ph;
|
|
struct tocblock toc;
|
|
struct vmdb vm;
|
|
struct list_head v_dgrp;
|
|
struct list_head v_disk;
|
|
struct list_head v_volu;
|
|
struct list_head v_comp;
|
|
struct list_head v_part;
|
|
};
|
|
|
|
#endif /* _FS_PT_LDM_H_ */
|
|
|