private static ExtendFileSystemResult ExtendMountedFileSystem(Volume volume, Guid windowsVolumeGuid, long numberOfAdditionalSectors)
{
// Windows Vista / 7 enforce various limitations on direct write operations to volumes and disks.
// We either have to take the disk(s) offline or use the OS volume handle for write operations.
// http://msdn.microsoft.com/en-us/library/ff551353%28v=vs.85%29.aspx
OperatingSystemVolume osVolume = new OperatingSystemVolume(windowsVolumeGuid, volume.BytesPerSector, volume.Size);
IExtendableFileSystem fileSystem = FileSystemHelper.ReadFileSystem(osVolume) as IExtendableFileSystem;
if (fileSystem == null)
{
return(ExtendFileSystemResult.UnsupportedFileSystem);
}
bool success = WindowsVolumeManager.ExclusiveLock(windowsVolumeGuid, FileAccess.ReadWrite);
if (!success)
{
return(ExtendFileSystemResult.CannotLockVolume);
}
// Dismounting the volume will make sure the OS have the correct filesystem size. (locking the volume is not enough)
success = WindowsVolumeManager.DismountVolume(windowsVolumeGuid);
if (!success)
{
return(ExtendFileSystemResult.CannotDismountVolume);
}
fileSystem.Extend(numberOfAdditionalSectors);
WindowsVolumeManager.ReleaseLock(windowsVolumeGuid);
return(ExtendFileSystemResult.Success);
}
private void ExtendFileSystemForm_Load(object sender, EventArgs e)
{
m_fileSystem = FileSystemHelper.ReadFileSystem(m_volume) as IExtendableFileSystem;
if (m_fileSystem == null)
{
MessageBox.Show("Filsystem is not supported for this operation.", "Error");
this.DialogResult = DialogResult.Cancel;
this.Close();
return;
}
long numberOfBytesAvailable = m_fileSystem.GetMaximumSizeToExtend();
long numberOfMBAvailable = numberOfBytesAvailable / 1024 / 1024;
numericAdditionalSize.Maximum = numberOfMBAvailable;
numericAdditionalSize.Value = numberOfMBAvailable;
btnOK.Enabled = (numberOfMBAvailable > 0);
}
private static ExtendFileSystemResult ExtendUnmountedFileSystem(Partition volume, long numberOfAdditionalSectors)
{
IExtendableFileSystem fileSystem = FileSystemHelper.ReadFileSystem(volume) as IExtendableFileSystem;
// Windows Vista / 7 enforce various limitations on direct write operations to volumes and disks.
// Basic disks are not needed to be taken offline for direct write operations within volume region. Only dynamic disks have to.
if (volume.Disk is PhysicalDisk && Environment.OSVersion.Version.Major >= 6)
{
bool isReadOnly;
bool isOnline = ((PhysicalDisk)volume.Disk).GetOnlineStatus(out isReadOnly);
if (!isOnline || isReadOnly)
{
return(ExtendFileSystemResult.OneOrMoreDisksAreOfflineOrReadonly);
}
LockStatus status = LockHelper.LockBasicDiskAndVolumesOrNone(((PhysicalDisk)volume.Disk));
if (status == LockStatus.CannotLockDisk)
{
return(ExtendFileSystemResult.CannotLockDisk);
}
else if (status == LockStatus.CannotLockVolume)
{
return(ExtendFileSystemResult.CannotLockVolume);
}
bool success = ((PhysicalDisk)volume.Disk).SetOnlineStatus(false);
if (!success)
{
return(ExtendFileSystemResult.CannotTakeDiskOffline);
}
}
fileSystem.Extend(numberOfAdditionalSectors);
if (volume.Disk is PhysicalDisk && (Environment.OSVersion.Version.Major >= 6))
{
bool success = ((PhysicalDisk)volume.Disk).SetOnlineStatus(true);
LockHelper.UnlockBasicDiskAndVolumes((PhysicalDisk)volume.Disk);
}
return(ExtendFileSystemResult.Success);
}
private static ExtendFileSystemResult ExtendUnmountedFileSystem(List <DynamicDisk> diskGroup, DynamicVolume volume, long numberOfAdditionalSectors)
{
if (!volume.IsOperational)
{
return(ExtendFileSystemResult.NonOperationalVolume);
}
IExtendableFileSystem fileSystem = FileSystemHelper.ReadFileSystem(volume) as IExtendableFileSystem;
// Windows Vista / 7 enforce various limitations on direct write operations to volumes and disks.
// Basic disks are not needed to be taken offline for direct write operations within volume region. Only dynamic disks have to.
if (Environment.OSVersion.Version.Major >= 6)
{
// Lock disks and volumes
DiskGroupLockResult lockResult = DiskGroupHelper.LockDiskGroup(diskGroup);
if (lockResult == DiskGroupLockResult.CannotLockDisk)
{
return(ExtendFileSystemResult.CannotLockDisk);
}
else if (lockResult == DiskGroupLockResult.CannotLockVolume)
{
return(ExtendFileSystemResult.CannotLockVolume);
}
else if (lockResult == DiskGroupLockResult.CannotTakeDiskOffline)
{
return(ExtendFileSystemResult.CannotTakeDiskOffline);
}
else if (lockResult == DiskGroupLockResult.OneOrMoreDisksAreOfflineOrReadonly)
{
return(ExtendFileSystemResult.OneOrMoreDisksAreOfflineOrReadonly);
}
}
fileSystem.Extend(numberOfAdditionalSectors);
if (Environment.OSVersion.Version.Major >= 6)
{
DiskGroupHelper.UnlockDiskGroup(diskGroup);
}
return(ExtendFileSystemResult.Success);
}
