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
91
92
93
|
//
// AUTHOR
// N. Nielsen
//
// VERSION
// 0.7
//
// LICENSE
// This software is in the public domain.
//
// The software is provided "as is", without warranty of any kind,
// express or implied, including but not limited to the warranties
// of merchantability, fitness for a particular purpose, and
// noninfringement. In no event shall the author(s) be liable for any
// claim, damages, or other liability, whether in an action of
// contract, tort, or otherwise, arising from, out of, or in connection
// with the software or the use or other dealings in the software.
//
// SUPPORT
// Send bug reports to: <nielsen@memberwebs.com>
//
#ifndef __DRIVE_H__20010822
#define __DRIVE_H__20010822
#include "usuals.h"
const uint16 kSectorSize = 0x200;
struct DriveLock;
struct PartitionInfo
{
uint32 firstSector;
uint32 lastSector;
uint32 offMFT; // In sectors
byte clusterSize; // In sectors
DriveLock* pLocks;
uint32 cLocks;
uint32 curLock;
};
PartitionInfo* CreatePartitionInfo();
void FreePartitionInfo(PartitionInfo* pInfo);
#pragma pack(push, drive)
#pragma pack(1)
const byte kPartition_Invalid = 0;
const byte kPartition_Extended = 5;
const byte kPartition_ExtendedLBA = 15;
// Partition table entry
struct Drive_PartEntry
{
byte active; // partition bootable flag
byte starthead; // starting head
byte startsector; // starting sector and 2 MS bits of cylinder
byte startcylinder; // starting cylinder (low 8 bits)
byte system; // partition type
byte endhead; // ending head
byte endsector; // ending sector and 2 MS bits of cylinder
byte endcylinder; // ending cylinder (low 8 bits)
uint32 startsec; // absolute starting sector
uint32 endsec; // absolute ending sector
};
const uint16 kMBR_Sig = 0xAA55;
// Master Boot Record
struct Drive_MBR
{
byte fill[0x1be]; // boot code
Drive_PartEntry partitions[4]; // partition table
uint16 sig; // 55AAh boot signature
};
#pragma pack(pop, drive)
#define CLUSTER_TO_SECTOR(info, clus) (((clus) * (info).clusterSize) + (info).firstSector)
#define SECTOR_TO_BYTES(sec) ((sec) * kSectorSize)
#define CLUSTER_SIZE(info) ((info).clusterSize * kSectorSize)
bool IntersectRange(uint64& b1, uint64& e1, uint64 b2, uint64 e2);
void AddLocationLock(PartitionInfo* pInfo, uint64 beg, uint64 end);
bool CheckLocationLock(PartitionInfo* pInfo, uint64& sec);
#endif //__DRIVE_H__20010822
|
