blob: 5b7a4ca0553a1550b2282da3329736caf17af2b3 (
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
|
#ifndef EXTFS_SUPERBLOCK_HPP
#define EXTFS_SUPERBLOCK_HPP
#include <array>
#include <cstdint>
namespace fs::detail
{
using u32 = std::uint32_t;
using s32 = std::int32_t;
using u16 = std::uint16_t;
using s16 = std::uint16_t;
using u08 = std::uint8_t;
template<std::size_t Size>
using chr_arr = std::array<char, Size>;
template<std::size_t Size>
using u08_arr = std::array<u08, Size>;
template<std::size_t Size>
using u32_arr = std::array<u32, Size>;
struct extfs_superblock
{
u32 const inodes_count{};
u32 const blocks_count{};
u32 const reserved_blocks_count{};
u32 const free_blocks_count{};
u32 const free_inodes_count{};
u32 const first_data_block_id{};
u32 const logical_block_size{};
s32 const logical_fragment_size{};
u32 const blocks_per_group{};
u32 const fragments_per_group{};
u32 const inodes_per_group{};
u32 const last_mount_timestamp{};
u32 const last_write_timestamp{};
u16 const mount_count{};
u16 const maximum_mount_count{};
u16 const magic_number{};
s16 const state{};
s16 const error_behaviour{};
s16 const revision_level_minor{};
u32 const last_check_timestamp{};
u32 const check_interval{};
u32 const creator_operating_system_id{};
u32 const revision_level{};
u16 const super_user_id{};
u16 const super_user_group_id{};
u32 const first_inode_id{};
u16 const inode_size{};
u16 const superblock_group_id{};
u32 const compatible_features{};
u32 const incompatible_features{};
u32 const read_only_compatible_features{};
u08_arr<16> const uuid{};
chr_arr<16> const volume_name{};
chr_arr<64> const last_mount_point{};
u32 const compression_algorithm{};
u08 const file_preallocated_blocks_count{};
u08 const directory_preallocated_blocks_count{};
u16 const _padding{};
u08_arr<16> const journal_superblock_uuid{};
u32 const journal_inode_id{};
u32 const journal_device_number{};
u32 const last_orphan_inode_id{};
u32_arr<4> const hash_seed{};
u08 const hash_version{};
u08_arr<3> const _reserved0{};
u32 const default_mount_options{};
u32 const first_meta_block_group_id{};
u08_arr<760> const _reserved1{};
};
static_assert(sizeof(extfs_superblock) == 1024, "An ext* super block must have an exact size of 1024 byte!");
}
#endif
|
