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1// SPDX-License-Identifier: GPL-2.0-or-later2/**3 * ldm - Part of the Linux-NTFS project.4 *5 * Copyright (C) 2001,2002 Richard Russon <ldm@flatcap.org>6 * Copyright (c) 2001-2007 Anton Altaparmakov7 * Copyright (C) 2001,2002 Jakob Kemi <jakob.kemi@telia.com>8 *9 * Documentation is available at http://www.linux-ntfs.org/doku.php?id=downloads 10 */11 12#ifndef _FS_PT_LDM_H_13#define _FS_PT_LDM_H_14 15#include <linux/types.h>16#include <linux/list.h>17#include <linux/fs.h>18#include <linux/unaligned.h>19#include <asm/byteorder.h>20 21struct parsed_partitions;22 23/* Magic numbers in CPU format. */24#define MAGIC_VMDB 0x564D4442 /* VMDB */25#define MAGIC_VBLK 0x56424C4B /* VBLK */26#define MAGIC_PRIVHEAD 0x5052495648454144ULL /* PRIVHEAD */27#define MAGIC_TOCBLOCK 0x544F43424C4F434BULL /* TOCBLOCK */28 29/* The defined vblk types. */30#define VBLK_VOL5 0x51 /* Volume, version 5 */31#define VBLK_CMP3 0x32 /* Component, version 3 */32#define VBLK_PRT3 0x33 /* Partition, version 3 */33#define VBLK_DSK3 0x34 /* Disk, version 3 */34#define VBLK_DSK4 0x44 /* Disk, version 4 */35#define VBLK_DGR3 0x35 /* Disk Group, version 3 */36#define VBLK_DGR4 0x45 /* Disk Group, version 4 */37 38/* vblk flags indicating extra information will be present */39#define VBLK_FLAG_COMP_STRIPE 0x1040#define VBLK_FLAG_PART_INDEX 0x0841#define VBLK_FLAG_DGR3_IDS 0x0842#define VBLK_FLAG_DGR4_IDS 0x0843#define VBLK_FLAG_VOLU_ID1 0x0844#define VBLK_FLAG_VOLU_ID2 0x2045#define VBLK_FLAG_VOLU_SIZE 0x8046#define VBLK_FLAG_VOLU_DRIVE 0x0247 48/* size of a vblk's static parts */49#define VBLK_SIZE_HEAD 1650#define VBLK_SIZE_CMP3 22 /* Name and version */51#define VBLK_SIZE_DGR3 1252#define VBLK_SIZE_DGR4 4453#define VBLK_SIZE_DSK3 1254#define VBLK_SIZE_DSK4 4555#define VBLK_SIZE_PRT3 2856#define VBLK_SIZE_VOL5 5857 58/* component types */59#define COMP_STRIPE 0x01 /* Stripe-set */60#define COMP_BASIC 0x02 /* Basic disk */61#define COMP_RAID 0x03 /* Raid-set */62 63/* Other constants. */64#define LDM_DB_SIZE 2048 /* Size in sectors (= 1MiB). */65 66#define OFF_PRIV1 6 /* Offset of the first privhead67 relative to the start of the68 device in sectors */69 70/* Offsets to structures within the LDM Database in sectors. */71#define OFF_PRIV2 1856 /* Backup private headers. */72#define OFF_PRIV3 204773 74#define OFF_TOCB1 1 /* Tables of contents. */75#define OFF_TOCB2 276#define OFF_TOCB3 204577#define OFF_TOCB4 204678 79#define OFF_VMDB 17 /* List of partitions. */80 81#define LDM_PARTITION 0x42 /* Formerly SFS (Landis). */82 83#define TOC_BITMAP1 "config" /* Names of the two defined */84#define TOC_BITMAP2 "log" /* bitmaps in the TOCBLOCK. */85 86struct frag { /* VBLK Fragment handling */87 struct list_head list;88 u32 group;89 u8 num; /* Total number of records */90 u8 rec; /* This is record number n */91 u8 map; /* Which portions are in use */92 u8 data[];93};94 95/* In memory LDM database structures. */96 97struct privhead { /* Offsets and sizes are in sectors. */98 u16 ver_major;99 u16 ver_minor;100 u64 logical_disk_start;101 u64 logical_disk_size;102 u64 config_start;103 u64 config_size;104 uuid_t disk_id;105};106 107struct tocblock { /* We have exactly two bitmaps. */108 u8 bitmap1_name[16];109 u64 bitmap1_start;110 u64 bitmap1_size;111 u8 bitmap2_name[16];112 u64 bitmap2_start;113 u64 bitmap2_size;114};115 116struct vmdb { /* VMDB: The database header */117 u16 ver_major;118 u16 ver_minor;119 u32 vblk_size;120 u32 vblk_offset;121 u32 last_vblk_seq;122};123 124struct vblk_comp { /* VBLK Component */125 u8 state[16];126 u64 parent_id;127 u8 type;128 u8 children;129 u16 chunksize;130};131 132struct vblk_dgrp { /* VBLK Disk Group */133 u8 disk_id[64];134};135 136struct vblk_disk { /* VBLK Disk */137 uuid_t disk_id;138 u8 alt_name[128];139};140 141struct vblk_part { /* VBLK Partition */142 u64 start;143 u64 size; /* start, size and vol_off in sectors */144 u64 volume_offset;145 u64 parent_id;146 u64 disk_id;147 u8 partnum;148};149 150struct vblk_volu { /* VBLK Volume */151 u8 volume_type[16];152 u8 volume_state[16];153 u8 guid[16];154 u8 drive_hint[4];155 u64 size;156 u8 partition_type;157};158 159struct vblk_head { /* VBLK standard header */160 u32 group;161 u16 rec;162 u16 nrec;163};164 165struct vblk { /* Generalised VBLK */166 u8 name[64];167 u64 obj_id;168 u32 sequence;169 u8 flags;170 u8 type;171 union {172 struct vblk_comp comp;173 struct vblk_dgrp dgrp;174 struct vblk_disk disk;175 struct vblk_part part;176 struct vblk_volu volu;177 } vblk;178 struct list_head list;179};180 181struct ldmdb { /* Cache of the database */182 struct privhead ph;183 struct tocblock toc;184 struct vmdb vm;185 struct list_head v_dgrp;186 struct list_head v_disk;187 struct list_head v_volu;188 struct list_head v_comp;189 struct list_head v_part;190};191 192#endif /* _FS_PT_LDM_H_ */193 194