blob: 6408dbd842c89d2948c539ca7da8ccbfb8754a6e (
plain) (
blame)
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
|
#include "Part.ns.h"
namespace Part {
Vector<BlockDevice*> devices;
Vector<Partition*> partitions;
void readPartitionTable(BlockDevice *dev) { //TODO : read partition table from device
partitions.push(new Partition(dev, 0, 0, dev->blocks())); //Insert whole device as a partition
}
void registerDevice(BlockDevice *dev) {
unregisterDevice(dev);
asm volatile("cli");
readPartitionTable(dev);
bool inserted = false;
for (u32int i = 0; i < devices.size(); i++) {
if (devices[i] == 0) {
devices[i] = dev;
inserted = true;
break;
}
}
if (!inserted) devices.push(dev);
asm volatile("sti");
}
void unregisterDevice(BlockDevice *dev) {
asm volatile("cli");
//Unregister && delete partitions
for (u32int i = 0; i < partitions.size(); i++) {
if (partitions[i]->getDevice() == dev) {
delete partitions[i];
partitions[i] = partitions.back();
partitions.pop();
i--;
}
}
//Unregister device
for (u32int i = 0; i < devices.size(); i++) {
if (devices[i] == dev) devices[i] = 0;
}
if (!devices.empty() && devices.back() == 0) devices.pop();
asm volatile("sti");
}
u32int getDeviceID(BlockDevice* dev) {
for (u32int i = 0; i < devices.size(); i++) {
if (devices[i] == dev) return i;
}
return (u32int) - 1;
}
}
|
