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a497ee34 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1da177e4 LT |
2 | /** |
3 | * ldm - Part of the Linux-NTFS project. | |
4 | * | |
5 | * Copyright (C) 2001,2002 Richard Russon <ldm@flatcap.org> | |
dde33348 | 6 | * Copyright (c) 2001-2007 Anton Altaparmakov |
1da177e4 LT |
7 | * Copyright (C) 2001,2002 Jakob Kemi <jakob.kemi@telia.com> |
8 | * | |
631dd1a8 | 9 | * Documentation is available at http://www.linux-ntfs.org/doku.php?id=downloads |
1da177e4 LT |
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> | |
1da177e4 LT |
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 | |
959bc220 | 56 | #define VBLK_SIZE_VOL5 58 |
1da177e4 LT |
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 | ||
dde33348 | 81 | #define LDM_PARTITION 0x42 /* Formerly SFS (Landis). */ |
1da177e4 LT |
82 | |
83 | #define TOC_BITMAP1 "config" /* Names of the two defined */ | |
84 | #define TOC_BITMAP2 "log" /* bitmaps in the TOCBLOCK. */ | |
85 | ||
1da177e4 LT |
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 */ | |
8a631c26 | 92 | u8 data[]; |
1da177e4 LT |
93 | }; |
94 | ||
95 | /* In memory LDM database structures. */ | |
96 | ||
1da177e4 LT |
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; | |
59b9c629 | 104 | uuid_t disk_id; |
1da177e4 LT |
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 */ | |
59b9c629 | 137 | uuid_t disk_id; |
1da177e4 LT |
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 | ||
1da177e4 LT |
192 | #endif /* _FS_PT_LDM_H_ */ |
193 |