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Diffstat (limited to 'block/partitions/ldm.h')
-rw-r--r-- | block/partitions/ldm.h | 215 |
1 files changed, 215 insertions, 0 deletions
diff --git a/block/partitions/ldm.h b/block/partitions/ldm.h new file mode 100644 index 000000000000..374242c0971a --- /dev/null +++ b/block/partitions/ldm.h | |||
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1 | /** | ||
2 | * ldm - Part of the Linux-NTFS project. | ||
3 | * | ||
4 | * Copyright (C) 2001,2002 Richard Russon <ldm@flatcap.org> | ||
5 | * Copyright (c) 2001-2007 Anton Altaparmakov | ||
6 | * Copyright (C) 2001,2002 Jakob Kemi <jakob.kemi@telia.com> | ||
7 | * | ||
8 | * Documentation is available at http://www.linux-ntfs.org/doku.php?id=downloads | ||
9 | * | ||
10 | * This program is free software; you can redistribute it and/or modify it | ||
11 | * under the terms of the GNU General Public License as published by the Free | ||
12 | * Software Foundation; either version 2 of the License, or (at your option) | ||
13 | * any later version. | ||
14 | * | ||
15 | * This program is distributed in the hope that it will be useful, | ||
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
18 | * GNU General Public License for more details. | ||
19 | * | ||
20 | * You should have received a copy of the GNU General Public License | ||
21 | * along with this program (in the main directory of the Linux-NTFS source | ||
22 | * in the file COPYING); if not, write to the Free Software Foundation, | ||
23 | * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
24 | */ | ||
25 | |||
26 | #ifndef _FS_PT_LDM_H_ | ||
27 | #define _FS_PT_LDM_H_ | ||
28 | |||
29 | #include <linux/types.h> | ||
30 | #include <linux/list.h> | ||
31 | #include <linux/genhd.h> | ||
32 | #include <linux/fs.h> | ||
33 | #include <asm/unaligned.h> | ||
34 | #include <asm/byteorder.h> | ||
35 | |||
36 | struct parsed_partitions; | ||
37 | |||
38 | /* Magic numbers in CPU format. */ | ||
39 | #define MAGIC_VMDB 0x564D4442 /* VMDB */ | ||
40 | #define MAGIC_VBLK 0x56424C4B /* VBLK */ | ||
41 | #define MAGIC_PRIVHEAD 0x5052495648454144ULL /* PRIVHEAD */ | ||
42 | #define MAGIC_TOCBLOCK 0x544F43424C4F434BULL /* TOCBLOCK */ | ||
43 | |||
44 | /* The defined vblk types. */ | ||
45 | #define VBLK_VOL5 0x51 /* Volume, version 5 */ | ||
46 | #define VBLK_CMP3 0x32 /* Component, version 3 */ | ||
47 | #define VBLK_PRT3 0x33 /* Partition, version 3 */ | ||
48 | #define VBLK_DSK3 0x34 /* Disk, version 3 */ | ||
49 | #define VBLK_DSK4 0x44 /* Disk, version 4 */ | ||
50 | #define VBLK_DGR3 0x35 /* Disk Group, version 3 */ | ||
51 | #define VBLK_DGR4 0x45 /* Disk Group, version 4 */ | ||
52 | |||
53 | /* vblk flags indicating extra information will be present */ | ||
54 | #define VBLK_FLAG_COMP_STRIPE 0x10 | ||
55 | #define VBLK_FLAG_PART_INDEX 0x08 | ||
56 | #define VBLK_FLAG_DGR3_IDS 0x08 | ||
57 | #define VBLK_FLAG_DGR4_IDS 0x08 | ||
58 | #define VBLK_FLAG_VOLU_ID1 0x08 | ||
59 | #define VBLK_FLAG_VOLU_ID2 0x20 | ||
60 | #define VBLK_FLAG_VOLU_SIZE 0x80 | ||
61 | #define VBLK_FLAG_VOLU_DRIVE 0x02 | ||
62 | |||
63 | /* size of a vblk's static parts */ | ||
64 | #define VBLK_SIZE_HEAD 16 | ||
65 | #define VBLK_SIZE_CMP3 22 /* Name and version */ | ||
66 | #define VBLK_SIZE_DGR3 12 | ||
67 | #define VBLK_SIZE_DGR4 44 | ||
68 | #define VBLK_SIZE_DSK3 12 | ||
69 | #define VBLK_SIZE_DSK4 45 | ||
70 | #define VBLK_SIZE_PRT3 28 | ||
71 | #define VBLK_SIZE_VOL5 58 | ||
72 | |||
73 | /* component types */ | ||
74 | #define COMP_STRIPE 0x01 /* Stripe-set */ | ||
75 | #define COMP_BASIC 0x02 /* Basic disk */ | ||
76 | #define COMP_RAID 0x03 /* Raid-set */ | ||
77 | |||
78 | /* Other constants. */ | ||
79 | #define LDM_DB_SIZE 2048 /* Size in sectors (= 1MiB). */ | ||
80 | |||
81 | #define OFF_PRIV1 6 /* Offset of the first privhead | ||
82 | relative to the start of the | ||
83 | device in sectors */ | ||
84 | |||
85 | /* Offsets to structures within the LDM Database in sectors. */ | ||
86 | #define OFF_PRIV2 1856 /* Backup private headers. */ | ||
87 | #define OFF_PRIV3 2047 | ||
88 | |||
89 | #define OFF_TOCB1 1 /* Tables of contents. */ | ||
90 | #define OFF_TOCB2 2 | ||
91 | #define OFF_TOCB3 2045 | ||
92 | #define OFF_TOCB4 2046 | ||
93 | |||
94 | #define OFF_VMDB 17 /* List of partitions. */ | ||
95 | |||
96 | #define LDM_PARTITION 0x42 /* Formerly SFS (Landis). */ | ||
97 | |||
98 | #define TOC_BITMAP1 "config" /* Names of the two defined */ | ||
99 | #define TOC_BITMAP2 "log" /* bitmaps in the TOCBLOCK. */ | ||
100 | |||
101 | /* Borrowed from msdos.c */ | ||
102 | #define SYS_IND(p) (get_unaligned(&(p)->sys_ind)) | ||
103 | |||
104 | struct frag { /* VBLK Fragment handling */ | ||
105 | struct list_head list; | ||
106 | u32 group; | ||
107 | u8 num; /* Total number of records */ | ||
108 | u8 rec; /* This is record number n */ | ||
109 | u8 map; /* Which portions are in use */ | ||
110 | u8 data[0]; | ||
111 | }; | ||
112 | |||
113 | /* In memory LDM database structures. */ | ||
114 | |||
115 | #define GUID_SIZE 16 | ||
116 | |||
117 | struct privhead { /* Offsets and sizes are in sectors. */ | ||
118 | u16 ver_major; | ||
119 | u16 ver_minor; | ||
120 | u64 logical_disk_start; | ||
121 | u64 logical_disk_size; | ||
122 | u64 config_start; | ||
123 | u64 config_size; | ||
124 | u8 disk_id[GUID_SIZE]; | ||
125 | }; | ||
126 | |||
127 | struct tocblock { /* We have exactly two bitmaps. */ | ||
128 | u8 bitmap1_name[16]; | ||
129 | u64 bitmap1_start; | ||
130 | u64 bitmap1_size; | ||
131 | u8 bitmap2_name[16]; | ||
132 | u64 bitmap2_start; | ||
133 | u64 bitmap2_size; | ||
134 | }; | ||
135 | |||
136 | struct vmdb { /* VMDB: The database header */ | ||
137 | u16 ver_major; | ||
138 | u16 ver_minor; | ||
139 | u32 vblk_size; | ||
140 | u32 vblk_offset; | ||
141 | u32 last_vblk_seq; | ||
142 | }; | ||
143 | |||
144 | struct vblk_comp { /* VBLK Component */ | ||
145 | u8 state[16]; | ||
146 | u64 parent_id; | ||
147 | u8 type; | ||
148 | u8 children; | ||
149 | u16 chunksize; | ||
150 | }; | ||
151 | |||
152 | struct vblk_dgrp { /* VBLK Disk Group */ | ||
153 | u8 disk_id[64]; | ||
154 | }; | ||
155 | |||
156 | struct vblk_disk { /* VBLK Disk */ | ||
157 | u8 disk_id[GUID_SIZE]; | ||
158 | u8 alt_name[128]; | ||
159 | }; | ||
160 | |||
161 | struct vblk_part { /* VBLK Partition */ | ||
162 | u64 start; | ||
163 | u64 size; /* start, size and vol_off in sectors */ | ||
164 | u64 volume_offset; | ||
165 | u64 parent_id; | ||
166 | u64 disk_id; | ||
167 | u8 partnum; | ||
168 | }; | ||
169 | |||
170 | struct vblk_volu { /* VBLK Volume */ | ||
171 | u8 volume_type[16]; | ||
172 | u8 volume_state[16]; | ||
173 | u8 guid[16]; | ||
174 | u8 drive_hint[4]; | ||
175 | u64 size; | ||
176 | u8 partition_type; | ||
177 | }; | ||
178 | |||
179 | struct vblk_head { /* VBLK standard header */ | ||
180 | u32 group; | ||
181 | u16 rec; | ||
182 | u16 nrec; | ||
183 | }; | ||
184 | |||
185 | struct vblk { /* Generalised VBLK */ | ||
186 | u8 name[64]; | ||
187 | u64 obj_id; | ||
188 | u32 sequence; | ||
189 | u8 flags; | ||
190 | u8 type; | ||
191 | union { | ||
192 | struct vblk_comp comp; | ||
193 | struct vblk_dgrp dgrp; | ||
194 | struct vblk_disk disk; | ||
195 | struct vblk_part part; | ||
196 | struct vblk_volu volu; | ||
197 | } vblk; | ||
198 | struct list_head list; | ||
199 | }; | ||
200 | |||
201 | struct ldmdb { /* Cache of the database */ | ||
202 | struct privhead ph; | ||
203 | struct tocblock toc; | ||
204 | struct vmdb vm; | ||
205 | struct list_head v_dgrp; | ||
206 | struct list_head v_disk; | ||
207 | struct list_head v_volu; | ||
208 | struct list_head v_comp; | ||
209 | struct list_head v_part; | ||
210 | }; | ||
211 | |||
212 | int ldm_partition(struct parsed_partitions *state); | ||
213 | |||
214 | #endif /* _FS_PT_LDM_H_ */ | ||
215 | |||