/// <param name="newAllocation">True if a new handle has been allocated for the caller, the caller must release the handle eventually</param>
public static SafeFileHandle ObtainHandle(Guid volumeGuid, FileAccess access, ShareMode shareMode, out bool newAllocation)
{
if (m_handlePool.ContainsKey(volumeGuid))
{
newAllocation = false;
return(m_handlePool[volumeGuid]);
}
else
{
newAllocation = true;
SafeFileHandle handle = HandleUtils.GetVolumeHandle(volumeGuid, access, shareMode);
m_handlePool.Add(volumeGuid, handle);
return(handle);
}
}
/// <summary>
/// Note: The NTFS file system treats a locked volume as a dismounted volume.
/// </summary>
public static bool IsVolumeMounted(string path)
{
SafeFileHandle handle = HandleUtils.GetVolumeHandle(path, FileAccess.Read, ShareMode.ReadWrite);
return(IsVolumeMounted(handle));
}
/// <summary>
/// Note: The NTFS file system treats a locked volume as a dismounted volume.
/// </summary>
public static bool IsVolumeMounted(Guid volumeGuid)
{
SafeFileHandle handle = HandleUtils.GetVolumeHandle(volumeGuid, FileAccess.Read, ShareMode.ReadWrite);
return(IsVolumeMounted(handle));
}
/// <summary>
/// Note: The NTFS file system treats a locked volume as a dismounted volume.
/// </summary>
public static bool IsVolumeMounted(char driveLetter)
{
SafeFileHandle handle = HandleUtils.GetVolumeHandle(driveLetter, FileAccess.Read, ShareMode.ReadWrite);
return(IsVolumeMounted(handle));
}
