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
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
|
// Copyright 2024-2025, Amlal El Mahrouss (amlal@nekernel.org)
// Licensed under the Apache License, Version 2.0 (see LICENSE file)
// Official repository: https://github.com/nekernel-org/nekernel
#ifndef INC_DRIVE_MANAGER_H
#define INC_DRIVE_MANAGER_H
/// @file DriveMgr.h
/// @brief Drive Manager.
/// @author Amlal El Mahrouss (amlal@nekernel.org)
#include <CompilerKit/CompilerKit.h>
#include <KernelKit/DebugOutput.h>
#include <KernelKit/DeviceMgr.h>
#include <KernelKit/KPC.h>
#include <KernelKit/ProcessScheduler.h>
#include <NeKit/Config.h>
#include <NeKit/KString.h>
#include <NeKit/Ref.h>
#define kDriveMaxCount (4U)
#define kDriveSectorSz (512U)
#define kDriveInvalidID (-1)
#define kDriveNameLen (32)
#define drv_sector_cnt(SIZE, SECTOR_SZ) (((SIZE) + (SECTOR_SZ)) / (SECTOR_SZ))
#define kDriveHiddenPrefix '~'
namespace Kernel {
enum {
kInvalidDrive = -1,
/// Storage types, combine with flags.
kBlockDevice = 0xAD,
kMassStorageDrive = 0xDA,
kFloppyDrive = 0xCD,
kOpticalDrive = 0xDC, // CD-ROM/DVD-ROM/Blu-Ray
kTapeDrive = 0xD7,
/// Storage flags, combine with types.
kReadOnlyDrive = 0x10, // Read only drive
kEPMDrive = 0x11, // Explicit Partition Map.
kVEPMDrive = 0x12, // ESP w/ EPM partition.
kMBRDrive = 0x13, // PC classic partition scheme
kGPTDrive = 0x14, // PC new partition scheme
kUnformattedDrive = 0x15,
kStorageCount = 9,
};
/// @brief Media drive trait type.
struct DriveTrait final {
Char fName[kDriveNameLen] = "/media/null"; // /System, /boot, //./Devices/USB...
UInt32 fKind{}; // fMassStorage, fFloppy, fOpticalDrive.
UInt32 fFlags{}; // fReadOnly, fEPMDrive...
/// @brief Packet drive (StorageKit compilant.)
struct DrivePacket final {
VoidPtr fPacketContent{nullptr}; //! packet body.
Char fPacketMime[kDriveNameLen] = "*/*"; //! identify what we're sending.
SizeT fPacketSize{0UL}; //! packet size
UInt32 fPacketCRC32{0UL}; //! sanity crc, in case if good is set to false
Boolean fPacketGood{YES};
Lba fPacketLba{0UL};
Boolean fPacketReadOnly{NO};
} fPacket;
Lba fLbaStart{0}, fLbaEnd{0};
SizeT fSectorSz{kDriveSectorSz};
Void (*fInput)(DrivePacket& packet){nullptr};
Void (*fOutput)(DrivePacket& packet){nullptr};
Void (*fVerify)(DrivePacket& packet){nullptr};
Void (*fInit)(DrivePacket& packet){nullptr};
const Char* (*fProtocol)(Void){nullptr};
};
namespace Probe {
Void io_detect_drive(DriveTrait& trait);
}
///! drive as a device.
typedef DriveTrait* DriveTraitPtr;
/**
* @brief Mounted drives interface.
* @note This class has all of it's drive set to nullptr, allocate them using
* GetAddressOf(index).
*/
class IMountpoint final {
public:
explicit IMountpoint() = default;
~IMountpoint() = default;
NE_COPY_DEFAULT(IMountpoint)
public:
DriveTrait& A() { return mA; }
DriveTrait& B() { return mB; }
DriveTrait& C() { return mC; }
DriveTrait& D() { return mD; }
enum {
kDriveIndexA = 0,
kDriveIndexB,
kDriveIndexC,
kDriveIndexD,
kDriveIndexInvalid,
};
DriveTraitPtr GetAddressOf(const Int32& index) {
err_local_get() = kErrorSuccess;
switch (index) {
case kDriveIndexA:
return &mA;
case kDriveIndexB:
return &mB;
case kDriveIndexC:
return &mC;
case kDriveIndexD:
return &mD;
default: {
err_local_get() = kErrorNoSuchDisk;
kout << "No such disc letter.\n";
break;
}
}
return nullptr;
}
private:
DriveTrait mA, mB, mC, mD;
};
/// @brief Unimplemented drive.
/// @param pckt the packet to read.
/// @return
Void io_drv_unimplemented(DriveTrait::DrivePacket* pckt);
/// @brief Gets the drive kind (ATA, SCSI, AHCI...)
/// @param void none.
/// @return the drive kind (ATA, Flash, NVM)
const Char* io_drv_kind(Void);
/// @brief Makes a new drive.
/// @return the new drive as a trait.
DriveTrait io_construct_blank_drive(Void);
/// @brief Fetches the main drive.
/// @param trait the new drive as a trait.
Void io_construct_main_drive(DriveTrait& trait);
/// @brief Fetches the main drive.
/// @return the new drive as a trait.
/// @deprecated use io_construct_main_drive(DriveTrait& trait) instead.
DriveTrait io_construct_main_drive(Void);
namespace Detect {
Void io_detect_drive(DriveTrait& trait);
}
Void io_drv_input(DriveTrait::DrivePacket pckt);
Void io_drv_output(DriveTrait::DrivePacket pckt);
} // namespace Kernel
#endif /* ifndef INC_DRIVE_MANAGER_H */
|
