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Root/branches/rewrite/i386/modules/Disk/FDiskPartition.cpp

Source at commit 1091 created 9 years 3 months ago.
By meklort, Initial FDisk Partiton scheme implimentation.
1/*
2 * Copyright (c) 2011 Evan Lojewski. All rights reserved.
3 *
4 */
5#include <FDiskPartition.hpp>
6
7
8FDiskPartition::FDiskPartition(Disk* disk, UInt8 partitionNumber) : Partition(disk, partitionNumber)
9{
10 mDisk = disk;
11 mNumSectors = 0;
12 mBeginSector = 0;
13 mPartitionNumber = partitionNumber;
14 mNumPartitions = 0;
15 mFdiskEntry = NULL;
16
17 if(mDisk)
18 {
19 // read in lba0, this contains the partition map if it's FDisk / MBR
20 mDisk->Read(0, 1, (UInt8*)&mLBA0);
21
22 if(isMBRDisk())
23 {
24 // Determine number of partition. TODO: Extended partitions
25 UInt8 i = 0;
26 for(i = 0; i < DISK_NPART; i++)
27 {
28 if(mLBA0.parts[i].systid != 0)
29 {
30 if(mPartitionNumber == mNumPartitions) mFdiskEntry = &mLBA0.parts[i];
31 mNumPartitions++;
32 }
33
34 }
35
36 if(mFdiskEntry)
37 {
38 mNumSectors = mFdiskEntry->numsect;
39 mBeginSector = mFdiskEntry->relsect;
40 }
41 }
42 }
43}
44
45FDiskPartition::~FDiskPartition()
46{
47
48}
49
50bool FDiskPartition::isMBRDisk()
51{
52 return mLBA0.signature == DISK_SIGNATURE;
53}
54

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Revision: 1091