/// <summary>
/// 获取指定分区（或者驱动器）的驱动器格式或文件系统。
/// </summary>
/// <param name="driveLetter">指定驱动器所对应的盘符。</param>
/// <returns>该操作将会返回指定驱动器的文件系统，在Windows环境下，这个操作将不会获取UNIX以及衍生操作系统所支持的文件系统。</returns>
public static EDriveFormat GetDriveFormat(string driveLetter)
{
EDriveFormat format = EDriveFormat.Win32NTFS;
DriveInfo dInfo = new DriveInfo(driveLetter);
string formatStr = dInfo.DriveFormat;
switch (formatStr)
{
case DRIVE_FORMAT_FAT12:
format = EDriveFormat.Win32FAT12;
break;
case DRIVE_FORMAT_FAT16:
format = EDriveFormat.Win32FAT16;
break;
case DRIVE_FORMAT_FAT32:
format = EDriveFormat.Win32FAT32;
break;
case DRIVE_FORMAT_NTFS:
format = EDriveFormat.Win32NTFS;
break;
default:
throw new UnsupportedDriveFormatException();
}
return(format);
}
public static long GetSupportedMaximalFileSize(EDriveFormat driveFormat)
{
long maximalFileSize = 0;
switch (driveFormat)
{
#if UNIX_LINUX_MAC
case EDriveFormat.LinuxExt:
maximalFileSize = 2147483648;
break;
case EDriveFormat.LinuxExt2:
maximalFileSize = 2199023255552;
break;
case EDriveFormat.LinuxExt3:
case EDriveFormat.LinuxExt4:
case EDriveFormat.LinuxJFS:
maximalFileSize = 17592186044416;
break;
#endif
#if WINDOWS
case EDriveFormat.Win32NTFS:
maximalFileSize = 68719476736;
break;
case EDriveFormat.Win32FAT12:
maximalFileSize = 8388608;
break;
case EDriveFormat.Win32FAT16:
maximalFileSize = 2147483648;
break;
case EDriveFormat.Win32FAT32:
maximalFileSize = 4294967296;
break;
case EDriveFormat.Win32NTFSv5:
default:
maximalFileSize = 2199023255552;
break;
#endif
}
return(maximalFileSize);
}
