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ExtDisk.cpp
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ExtDisk.cpp
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/*
* Copyright (c) 2021 Nick Du (nick@nickdu.com)
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* - The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "pch.h"
#include "ExtDisk.h"
#include "io_raw.h"
using namespace System::IO;
/// <summary>
/// Constructor for ExtDisk
/// </summary>
/// <param name="diskPath">Linux disk path</param>
SharpExt4::ExtDisk::ExtDisk(String^ diskPath)
{
diskPath = diskPath;
auto input_name = (char*)Marshal::StringToHGlobalAnsi(diskPath).ToPointer();
ext4_io_raw_filename(input_name);
bd = ext4_io_raw_dev_get();
}
/// <summary>
/// To provide Linux disk image file access
/// </summary>
/// <param name="imagePath">Linux disk image file name</param>
/// <returns></returns>
SharpExt4::ExtDisk^ SharpExt4::ExtDisk::Open(String^ imagePath)
{
if (File::Exists(imagePath))
{
auto disk = gcnew ExtDisk(imagePath);
disk->bdevs = new ext4_mbr_bdevs();
auto r = ext4_mbr_scan(disk->bd, disk->bdevs);
if (r == EOK)
{
disk->capacity = disk->bd->part_offset;
disk->geometry = gcnew SharpExt4::Geometry(disk->bd->part_size, disk->bd->bdif->ph_tcnt, disk->bd->bdif->ph_scnt, disk->bd->bdif->ph_bsize);
disk->partitions = gcnew List<Partition^>();
for (auto par : disk->bdevs->partitions)
{
Partition^ partition = gcnew Partition();
partition->Offset = par.part_offset;
partition->Size = par.part_size;
disk->partitions->Add(partition);
}
return disk;
}
throw gcnew IOException("Could not read disk MBR.");
}
throw gcnew FileNotFoundException("Could not find file '" + imagePath +"'.");
}
/// <summary>
/// Get Linux disk MBR
/// </summary>
/// <returns>MBR sector</returns>
array<Byte>^ SharpExt4::ExtDisk::GetMasterBootRecord()
{
auto r = ext4_mbr_scan(bd, bdevs);
if (r == EOK)
{
array<Byte>^ mbr = gcnew array<Byte>(512);
Marshal::Copy((IntPtr)bd->bdif->ph_bbuf, mbr, 0, 512);
return mbr;
}
throw gcnew IOException("Could not read disk MBR.");
}
/// <summary>
/// Destructor of ExtDisk
/// </summary>
SharpExt4::ExtDisk::~ExtDisk()
{
ext4_block_fini(bd);
delete bdevs;
}
/// <summary>
/// To provide physical Linux disk access
/// </summary>
/// <param name="DiskNumber">Physical Disk Number</param>
/// <returns>ExtDisk</returns>
SharpExt4::ExtDisk^ SharpExt4::ExtDisk::Open(int DiskNumber)
{
auto disk = gcnew ExtDisk(String::Format("PhysicalDrive{0}", DiskNumber));
disk->bdevs = new ext4_mbr_bdevs();
auto r = ext4_mbr_scan(disk->bd, disk->bdevs);
if (r == EOK)
{
disk->capacity = disk->bd->part_offset;
disk->geometry = gcnew SharpExt4::Geometry(disk->bd->part_size, disk->bd->bdif->ph_tcnt, disk->bd->bdif->ph_scnt, disk->bd->bdif->ph_bsize);
disk->partitions = gcnew List<Partition^>();
for (auto par : disk->bdevs->partitions)
{
Partition^ partition = gcnew Partition();
partition->Offset = par.part_offset;
partition->Size = par.part_size;
disk->partitions->Add(partition);
}
return disk;
}
throw gcnew IOException("Could not read disk MBR.");
}
/// <summary>
/// Linux disk capacity
/// </summary>
uint64_t SharpExt4::ExtDisk::Capacity::get()
{
return capacity;
}
/// <summary>
/// Linux disk geometry
/// </summary>
SharpExt4::Geometry^ SharpExt4::ExtDisk::Geometry::get()
{
return geometry;
}
/// <summary>
/// Linux disk partitions
/// </summary>
IList<SharpExt4::Partition^>^ SharpExt4::ExtDisk::Parititions::get()
{
return partitions;
}