1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /** 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 Altaparmakov 7 * 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 <asm/unaligned.h> 19 #include <asm/byteorder.h> 20 21 struct 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 0x10 40 #define VBLK_FLAG_PART_INDEX 0x08 41 #define VBLK_FLAG_DGR3_IDS 0x08 42 #define VBLK_FLAG_DGR4_IDS 0x08 43 #define VBLK_FLAG_VOLU_ID1 0x08 44 #define VBLK_FLAG_VOLU_ID2 0x20 45 #define VBLK_FLAG_VOLU_SIZE 0x80 46 #define VBLK_FLAG_VOLU_DRIVE 0x02 47 48 /* size of a vblk's static parts */ 49 #define VBLK_SIZE_HEAD 16 50 #define VBLK_SIZE_CMP3 22 /* Name and version */ 51 #define VBLK_SIZE_DGR3 12 52 #define VBLK_SIZE_DGR4 44 53 #define VBLK_SIZE_DSK3 12 54 #define VBLK_SIZE_DSK4 45 55 #define VBLK_SIZE_PRT3 28 56 #define VBLK_SIZE_VOL5 58 57 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 privhead 67 relative to the start of the 68 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 2047 73 74 #define OFF_TOCB1 1 /* Tables of contents. */ 75 #define OFF_TOCB2 2 76 #define OFF_TOCB3 2045 77 #define OFF_TOCB4 2046 78 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 86 struct 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 97 struct 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 }; 106 107 struct 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 }; 115 116 struct 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 }; 123 124 struct vblk_comp { /* VBLK Component */ 125 u8 state[16]; 126 u64 parent_id; 127 u8 type; 128 u8 children; 129 u16 chunksize; 130 }; 131 132 struct vblk_dgrp { /* VBLK Disk Group */ 133 u8 disk_id[64]; 134 }; 135 136 struct vblk_disk { /* VBLK Disk */ 137 uuid_t disk_id; 138 u8 alt_name[128]; 139 }; 140 141 struct 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 }; 149 150 struct 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 }; 158 159 struct vblk_head { /* VBLK standard header */ 160 u32 group; 161 u16 rec; 162 u16 nrec; 163 }; 164 165 struct 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 }; 180 181 struct 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