// 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 <linux/unaligned.h>
#include <asm /byteorder.h>
struct parsed_partitions;
/* Magic numbers in CPU format. */
#define MAGIC_VMDB 0 x564D4442 /* VMDB */
#define MAGIC_VBLK 0 x56424C4B /* VBLK */
#define MAGIC_PRIVHEAD 0 x5052495648454144ULL /* PRIVHEAD */
#define MAGIC_TOCBLOCK 0 x544F43424C4F434BULL /* TOCBLOCK */
/* The defined vblk types. */
#define VBLK_VOL5 0 x51 /* Volume, version 5 */
#define VBLK_CMP3 0 x32 /* Component, version 3 */
#define VBLK_PRT3 0 x33 /* Partition, version 3 */
#define VBLK_DSK3 0 x34 /* Disk, version 3 */
#define VBLK_DSK4 0 x44 /* Disk, version 4 */
#define VBLK_DGR3 0 x35 /* Disk Group, version 3 */
#define VBLK_DGR4 0 x45 /* Disk Group, version 4 */
/* vblk flags indicating extra information will be present */
#define VBLK_FLAG_COMP_STRIPE 0 x10
#define VBLK_FLAG_PART_INDEX 0 x08
#define VBLK_FLAG_DGR3_IDS 0 x08
#define VBLK_FLAG_DGR4_IDS 0 x08
#define VBLK_FLAG_VOLU_ID1 0 x08
#define VBLK_FLAG_VOLU_ID2 0 x20
#define VBLK_FLAG_VOLU_SIZE 0 x80
#define VBLK_FLAG_VOLU_DRIVE 0 x02
/* 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 0 x01 /* Stripe-set */
#define COMP_BASIC 0 x02 /* Basic disk */
#define COMP_RAID 0 x03 /* 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 0 x42 /* 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_ */
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