blob: 30a609c20b5de2997e2b96f86ae7654ce1ad14df (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
|
/* lvm.h - On disk structures for LVM. */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2006,2007 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef GRUB_LVM_H
#define GRUB_LVM_H 1
#include <grub/types.h>
#include <grub/diskfilter.h>
/* Length of ID string, excluding terminating zero. */
#define GRUB_LVM_ID_STRLEN 38
#define GRUB_LVM_LABEL_SIZE GRUB_DISK_SECTOR_SIZE
#define GRUB_LVM_LABEL_SCAN_SECTORS 4L
#define GRUB_LVM_LABEL_ID "LABELONE"
#define GRUB_LVM_LVM2_LABEL "LVM2 001"
#define GRUB_LVM_ID_LEN 32
/* On disk - 32 bytes */
struct grub_lvm_label_header {
grub_int8_t id[8]; /* LABELONE */
grub_uint64_t sector_xl; /* Sector number of this label */
grub_uint32_t crc_xl; /* From next field to end of sector */
grub_uint32_t offset_xl; /* Offset from start of struct to contents */
grub_int8_t type[8]; /* LVM2 001 */
} GRUB_PACKED;
/* On disk */
struct grub_lvm_disk_locn {
grub_uint64_t offset; /* Offset in bytes to start sector */
grub_uint64_t size; /* Bytes */
} GRUB_PACKED;
/* Fields with the suffix _xl should be xlate'd wherever they appear */
/* On disk */
struct grub_lvm_pv_header {
grub_int8_t pv_uuid[GRUB_LVM_ID_LEN];
/* This size can be overridden if PV belongs to a VG */
grub_uint64_t device_size_xl; /* Bytes */
/* NULL-terminated list of data areas followed by */
/* NULL-terminated list of metadata area headers */
struct grub_lvm_disk_locn disk_areas_xl[0]; /* Two lists */
} GRUB_PACKED;
#define GRUB_LVM_FMTT_MAGIC "\040\114\126\115\062\040\170\133\065\101\045\162\060\116\052\076"
#define GRUB_LVM_FMTT_VERSION 1
#define GRUB_LVM_MDA_HEADER_SIZE 512
/* On disk */
struct grub_lvm_raw_locn {
grub_uint64_t offset; /* Offset in bytes to start sector */
grub_uint64_t size; /* Bytes */
grub_uint32_t checksum;
grub_uint32_t filler;
} GRUB_PACKED;
/* On disk */
/* Structure size limited to one sector */
struct grub_lvm_mda_header {
grub_uint32_t checksum_xl; /* Checksum of rest of mda_header */
grub_int8_t magic[16]; /* To aid scans for metadata */
grub_uint32_t version;
grub_uint64_t start; /* Absolute start byte of mda_header */
grub_uint64_t size; /* Size of metadata area */
struct grub_lvm_raw_locn raw_locns[0]; /* NULL-terminated list */
} GRUB_PACKED;
#endif /* ! GRUB_LVM_H */
|
