-- 作者：卷积内核
-- 发布时间：7/23/2012 9:46:00 AM
--
C#利用
Zgke.DriverLoader T = new Zgke.DriverLoader("C:");
byte[] Temp = T.ReadSector(0);
MessageBox.Show(T.GetString(Temp)); using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;
using Microsoft.Win32.SafeHandles;
using System.Windows.Forms;
namespace Zgke
{
/// <summary>
/// 2008-09-26
/// 磁盘扇区
/// </summary>
public class DriverLoader
{
private const uint GENERIC_READ = 0x80000000;
private const uint GENERIC_WRITE = 0x40000000; private const uint FILE_SHARE_READ = 0x00000001;
private const uint FILE_SHARE_WRITE = 0x00000002; private const uint OPEN_EXISTING = 3; [DllImport("kernel32.dll", SetLastError = true)]
private static extern SafeFileHandle CreateFileA(string lpFileName, uint dwDesiredAccess, uint dwShareMode, IntPtr lpSecurityAttributes, uint dwCreationDisposition, uint dwFlagsAndAttributes, IntPtr hTemplateFile);
private System.IO.FileStream _DirverStream;
private long _SectorLength = 0;
private SafeFileHandle _DirverHandle; /// <summary>
/// 扇区数
/// </summary>
public long SectorLength { get { return _SectorLength; } }
/// <summary>
/// 获取磁盘扇区信息
/// </summary>
/// <param name="DirverName">G:</param>
public DriverLoader(string DirverName)
{
if (DirverName == null && DirverName.Trim().Length == 0) return;
_DirverHandle = CreateFileA("\\\\.\\" + DirverName.Trim(), GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, IntPtr.Zero, OPEN_EXISTING, 0, IntPtr.Zero); _DirverStream = new System.IO.FileStream(_DirverHandle, System.IO.FileAccess.ReadWrite); GetSectorCount();
}
/// <summary>
/// 扇区显示转换
/// </summary>
/// <param name="SectorBytes">扇区 长度512</param>
/// <returns>EB 52 90 ......55 AA</returns>
public string GetString(byte[] SectorBytes)
{
if (SectorBytes.Length != 512) return "";
StringBuilder ReturnText = new StringBuilder(); int RowCount = 0;
for (int i = 0; i != 512; i++)
{
ReturnText.Append(SectorBytes[i].ToString("X02") + " "); if (RowCount == 15)
{
ReturnText.Append("\r\n");
RowCount = -1;
} RowCount++;
} return ReturnText.ToString(); }
/// <summary>
/// 获取扇区数
/// </summary>
private void GetSectorCount()
{
if (_DirverStream == null) return;
_DirverStream.Position = 0; byte[] ReturnByte = new byte[512];
_DirverStream.Read(ReturnByte, 0, 512); //获取第1扇区
if (ReturnByte[0] == 0xEB && ReturnByte[1] == 0x58) //DOS的好象都是32位
{
_SectorLength = (long)BitConverter.ToInt32(new byte[] { ReturnByte[32], ReturnByte[33], ReturnByte[34], ReturnByte[35] }, 0);
}
if (ReturnByte[0] == 0xEB && ReturnByte[1] == 0x52) //NTFS好象是64位
{
_SectorLength = BitConverter.ToInt64(new byte[] { ReturnByte[40], ReturnByte[41], ReturnByte[42], ReturnByte[43], ReturnByte[44], ReturnByte[45], ReturnByte[46], ReturnByte[47] }, 0);
} }
/// <summary>
/// 读一个扇区
/// </summary>
/// <param name="SectorIndex">扇区号</param>
/// <returns>如果扇区数字大于分区信息的扇区数 返回NULL</returns>
public byte[] ReadSector(long SectorIndex)
{
if (SectorIndex > _SectorLength) return null;
_DirverStream.Position = SectorIndex * 512;
byte[] ReturnByte = new byte[512];
_DirverStream.Read(ReturnByte, 0, 512); //获取扇区
return ReturnByte;
}
/// <summary>
/// 写入数据
/// </summary>
/// <param name="SectorBytes">扇区 长度512</param>
/// <param name="SectorIndex">扇区位置</param>
public void WritSector(byte[] SectorBytes, long SectorIndex)
{
if (SectorBytes.Length != 512) return;
if (SectorIndex > _SectorLength) return;
_DirverStream.Position = SectorIndex * 512;
_DirverStream.Write(SectorBytes, 0, 512); //写入扇区
}
/// <summary>
/// 关闭
/// </summary>
public void Close()
{
_DirverStream.Close();
}
}
}
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