1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-or-later 2*4882a593Smuzhiyun /** 3*4882a593Smuzhiyun * ldm - Part of the Linux-NTFS project. 4*4882a593Smuzhiyun * 5*4882a593Smuzhiyun * Copyright (C) 2001,2002 Richard Russon <ldm@flatcap.org> 6*4882a593Smuzhiyun * Copyright (c) 2001-2007 Anton Altaparmakov 7*4882a593Smuzhiyun * Copyright (C) 2001,2002 Jakob Kemi <jakob.kemi@telia.com> 8*4882a593Smuzhiyun * 9*4882a593Smuzhiyun * Documentation is available at http://www.linux-ntfs.org/doku.php?id=downloads 10*4882a593Smuzhiyun */ 11*4882a593Smuzhiyun 12*4882a593Smuzhiyun #ifndef _FS_PT_LDM_H_ 13*4882a593Smuzhiyun #define _FS_PT_LDM_H_ 14*4882a593Smuzhiyun 15*4882a593Smuzhiyun #include <linux/types.h> 16*4882a593Smuzhiyun #include <linux/list.h> 17*4882a593Smuzhiyun #include <linux/genhd.h> 18*4882a593Smuzhiyun #include <linux/fs.h> 19*4882a593Smuzhiyun #include <asm/unaligned.h> 20*4882a593Smuzhiyun #include <asm/byteorder.h> 21*4882a593Smuzhiyun 22*4882a593Smuzhiyun struct parsed_partitions; 23*4882a593Smuzhiyun 24*4882a593Smuzhiyun /* Magic numbers in CPU format. */ 25*4882a593Smuzhiyun #define MAGIC_VMDB 0x564D4442 /* VMDB */ 26*4882a593Smuzhiyun #define MAGIC_VBLK 0x56424C4B /* VBLK */ 27*4882a593Smuzhiyun #define MAGIC_PRIVHEAD 0x5052495648454144ULL /* PRIVHEAD */ 28*4882a593Smuzhiyun #define MAGIC_TOCBLOCK 0x544F43424C4F434BULL /* TOCBLOCK */ 29*4882a593Smuzhiyun 30*4882a593Smuzhiyun /* The defined vblk types. */ 31*4882a593Smuzhiyun #define VBLK_VOL5 0x51 /* Volume, version 5 */ 32*4882a593Smuzhiyun #define VBLK_CMP3 0x32 /* Component, version 3 */ 33*4882a593Smuzhiyun #define VBLK_PRT3 0x33 /* Partition, version 3 */ 34*4882a593Smuzhiyun #define VBLK_DSK3 0x34 /* Disk, version 3 */ 35*4882a593Smuzhiyun #define VBLK_DSK4 0x44 /* Disk, version 4 */ 36*4882a593Smuzhiyun #define VBLK_DGR3 0x35 /* Disk Group, version 3 */ 37*4882a593Smuzhiyun #define VBLK_DGR4 0x45 /* Disk Group, version 4 */ 38*4882a593Smuzhiyun 39*4882a593Smuzhiyun /* vblk flags indicating extra information will be present */ 40*4882a593Smuzhiyun #define VBLK_FLAG_COMP_STRIPE 0x10 41*4882a593Smuzhiyun #define VBLK_FLAG_PART_INDEX 0x08 42*4882a593Smuzhiyun #define VBLK_FLAG_DGR3_IDS 0x08 43*4882a593Smuzhiyun #define VBLK_FLAG_DGR4_IDS 0x08 44*4882a593Smuzhiyun #define VBLK_FLAG_VOLU_ID1 0x08 45*4882a593Smuzhiyun #define VBLK_FLAG_VOLU_ID2 0x20 46*4882a593Smuzhiyun #define VBLK_FLAG_VOLU_SIZE 0x80 47*4882a593Smuzhiyun #define VBLK_FLAG_VOLU_DRIVE 0x02 48*4882a593Smuzhiyun 49*4882a593Smuzhiyun /* size of a vblk's static parts */ 50*4882a593Smuzhiyun #define VBLK_SIZE_HEAD 16 51*4882a593Smuzhiyun #define VBLK_SIZE_CMP3 22 /* Name and version */ 52*4882a593Smuzhiyun #define VBLK_SIZE_DGR3 12 53*4882a593Smuzhiyun #define VBLK_SIZE_DGR4 44 54*4882a593Smuzhiyun #define VBLK_SIZE_DSK3 12 55*4882a593Smuzhiyun #define VBLK_SIZE_DSK4 45 56*4882a593Smuzhiyun #define VBLK_SIZE_PRT3 28 57*4882a593Smuzhiyun #define VBLK_SIZE_VOL5 58 58*4882a593Smuzhiyun 59*4882a593Smuzhiyun /* component types */ 60*4882a593Smuzhiyun #define COMP_STRIPE 0x01 /* Stripe-set */ 61*4882a593Smuzhiyun #define COMP_BASIC 0x02 /* Basic disk */ 62*4882a593Smuzhiyun #define COMP_RAID 0x03 /* Raid-set */ 63*4882a593Smuzhiyun 64*4882a593Smuzhiyun /* Other constants. */ 65*4882a593Smuzhiyun #define LDM_DB_SIZE 2048 /* Size in sectors (= 1MiB). */ 66*4882a593Smuzhiyun 67*4882a593Smuzhiyun #define OFF_PRIV1 6 /* Offset of the first privhead 68*4882a593Smuzhiyun relative to the start of the 69*4882a593Smuzhiyun device in sectors */ 70*4882a593Smuzhiyun 71*4882a593Smuzhiyun /* Offsets to structures within the LDM Database in sectors. */ 72*4882a593Smuzhiyun #define OFF_PRIV2 1856 /* Backup private headers. */ 73*4882a593Smuzhiyun #define OFF_PRIV3 2047 74*4882a593Smuzhiyun 75*4882a593Smuzhiyun #define OFF_TOCB1 1 /* Tables of contents. */ 76*4882a593Smuzhiyun #define OFF_TOCB2 2 77*4882a593Smuzhiyun #define OFF_TOCB3 2045 78*4882a593Smuzhiyun #define OFF_TOCB4 2046 79*4882a593Smuzhiyun 80*4882a593Smuzhiyun #define OFF_VMDB 17 /* List of partitions. */ 81*4882a593Smuzhiyun 82*4882a593Smuzhiyun #define LDM_PARTITION 0x42 /* Formerly SFS (Landis). */ 83*4882a593Smuzhiyun 84*4882a593Smuzhiyun #define TOC_BITMAP1 "config" /* Names of the two defined */ 85*4882a593Smuzhiyun #define TOC_BITMAP2 "log" /* bitmaps in the TOCBLOCK. */ 86*4882a593Smuzhiyun 87*4882a593Smuzhiyun struct frag { /* VBLK Fragment handling */ 88*4882a593Smuzhiyun struct list_head list; 89*4882a593Smuzhiyun u32 group; 90*4882a593Smuzhiyun u8 num; /* Total number of records */ 91*4882a593Smuzhiyun u8 rec; /* This is record number n */ 92*4882a593Smuzhiyun u8 map; /* Which portions are in use */ 93*4882a593Smuzhiyun u8 data[]; 94*4882a593Smuzhiyun }; 95*4882a593Smuzhiyun 96*4882a593Smuzhiyun /* In memory LDM database structures. */ 97*4882a593Smuzhiyun 98*4882a593Smuzhiyun struct privhead { /* Offsets and sizes are in sectors. */ 99*4882a593Smuzhiyun u16 ver_major; 100*4882a593Smuzhiyun u16 ver_minor; 101*4882a593Smuzhiyun u64 logical_disk_start; 102*4882a593Smuzhiyun u64 logical_disk_size; 103*4882a593Smuzhiyun u64 config_start; 104*4882a593Smuzhiyun u64 config_size; 105*4882a593Smuzhiyun uuid_t disk_id; 106*4882a593Smuzhiyun }; 107*4882a593Smuzhiyun 108*4882a593Smuzhiyun struct tocblock { /* We have exactly two bitmaps. */ 109*4882a593Smuzhiyun u8 bitmap1_name[16]; 110*4882a593Smuzhiyun u64 bitmap1_start; 111*4882a593Smuzhiyun u64 bitmap1_size; 112*4882a593Smuzhiyun u8 bitmap2_name[16]; 113*4882a593Smuzhiyun u64 bitmap2_start; 114*4882a593Smuzhiyun u64 bitmap2_size; 115*4882a593Smuzhiyun }; 116*4882a593Smuzhiyun 117*4882a593Smuzhiyun struct vmdb { /* VMDB: The database header */ 118*4882a593Smuzhiyun u16 ver_major; 119*4882a593Smuzhiyun u16 ver_minor; 120*4882a593Smuzhiyun u32 vblk_size; 121*4882a593Smuzhiyun u32 vblk_offset; 122*4882a593Smuzhiyun u32 last_vblk_seq; 123*4882a593Smuzhiyun }; 124*4882a593Smuzhiyun 125*4882a593Smuzhiyun struct vblk_comp { /* VBLK Component */ 126*4882a593Smuzhiyun u8 state[16]; 127*4882a593Smuzhiyun u64 parent_id; 128*4882a593Smuzhiyun u8 type; 129*4882a593Smuzhiyun u8 children; 130*4882a593Smuzhiyun u16 chunksize; 131*4882a593Smuzhiyun }; 132*4882a593Smuzhiyun 133*4882a593Smuzhiyun struct vblk_dgrp { /* VBLK Disk Group */ 134*4882a593Smuzhiyun u8 disk_id[64]; 135*4882a593Smuzhiyun }; 136*4882a593Smuzhiyun 137*4882a593Smuzhiyun struct vblk_disk { /* VBLK Disk */ 138*4882a593Smuzhiyun uuid_t disk_id; 139*4882a593Smuzhiyun u8 alt_name[128]; 140*4882a593Smuzhiyun }; 141*4882a593Smuzhiyun 142*4882a593Smuzhiyun struct vblk_part { /* VBLK Partition */ 143*4882a593Smuzhiyun u64 start; 144*4882a593Smuzhiyun u64 size; /* start, size and vol_off in sectors */ 145*4882a593Smuzhiyun u64 volume_offset; 146*4882a593Smuzhiyun u64 parent_id; 147*4882a593Smuzhiyun u64 disk_id; 148*4882a593Smuzhiyun u8 partnum; 149*4882a593Smuzhiyun }; 150*4882a593Smuzhiyun 151*4882a593Smuzhiyun struct vblk_volu { /* VBLK Volume */ 152*4882a593Smuzhiyun u8 volume_type[16]; 153*4882a593Smuzhiyun u8 volume_state[16]; 154*4882a593Smuzhiyun u8 guid[16]; 155*4882a593Smuzhiyun u8 drive_hint[4]; 156*4882a593Smuzhiyun u64 size; 157*4882a593Smuzhiyun u8 partition_type; 158*4882a593Smuzhiyun }; 159*4882a593Smuzhiyun 160*4882a593Smuzhiyun struct vblk_head { /* VBLK standard header */ 161*4882a593Smuzhiyun u32 group; 162*4882a593Smuzhiyun u16 rec; 163*4882a593Smuzhiyun u16 nrec; 164*4882a593Smuzhiyun }; 165*4882a593Smuzhiyun 166*4882a593Smuzhiyun struct vblk { /* Generalised VBLK */ 167*4882a593Smuzhiyun u8 name[64]; 168*4882a593Smuzhiyun u64 obj_id; 169*4882a593Smuzhiyun u32 sequence; 170*4882a593Smuzhiyun u8 flags; 171*4882a593Smuzhiyun u8 type; 172*4882a593Smuzhiyun union { 173*4882a593Smuzhiyun struct vblk_comp comp; 174*4882a593Smuzhiyun struct vblk_dgrp dgrp; 175*4882a593Smuzhiyun struct vblk_disk disk; 176*4882a593Smuzhiyun struct vblk_part part; 177*4882a593Smuzhiyun struct vblk_volu volu; 178*4882a593Smuzhiyun } vblk; 179*4882a593Smuzhiyun struct list_head list; 180*4882a593Smuzhiyun }; 181*4882a593Smuzhiyun 182*4882a593Smuzhiyun struct ldmdb { /* Cache of the database */ 183*4882a593Smuzhiyun struct privhead ph; 184*4882a593Smuzhiyun struct tocblock toc; 185*4882a593Smuzhiyun struct vmdb vm; 186*4882a593Smuzhiyun struct list_head v_dgrp; 187*4882a593Smuzhiyun struct list_head v_disk; 188*4882a593Smuzhiyun struct list_head v_volu; 189*4882a593Smuzhiyun struct list_head v_comp; 190*4882a593Smuzhiyun struct list_head v_part; 191*4882a593Smuzhiyun }; 192*4882a593Smuzhiyun 193*4882a593Smuzhiyun #endif /* _FS_PT_LDM_H_ */ 194*4882a593Smuzhiyun 195