public static string GetTarget(string path)
{
using (var fileHandle = getFileHandle(path))
{
if (fileHandle.IsInvalid)
{
Marshal.ThrowExceptionForHR(Marshal.GetHRForLastWin32Error());
}
int outBufferSize = Marshal.SizeOf(typeof(SymbolicLinkReparseData));
IntPtr outBuffer = IntPtr.Zero;
SymbolicLinkReparseData reparseDataBuffer;
try
{
outBuffer = Marshal.AllocHGlobal(outBufferSize);
int bytesReturned;
bool success = Win32SafeNativeMethods.DeviceIoControl(
fileHandle.DangerousGetHandle(), ioctlCommandGetReparsePoint, IntPtr.Zero, 0,
outBuffer, outBufferSize, out bytesReturned, IntPtr.Zero);
fileHandle.Close();
if (!success || bytesReturned <= 0)
{
if (((uint)Marshal.GetHRForLastWin32Error()) == PathNotAReparsePointError)
{
return(null);
}
Marshal.ThrowExceptionForHR(Marshal.GetHRForLastWin32Error());
}
reparseDataBuffer = (SymbolicLinkReparseData)Marshal.PtrToStructure(
outBuffer, typeof(SymbolicLinkReparseData));
}
finally
{
Marshal.FreeHGlobal(outBuffer);
}
return(reparseDataBuffer.ReparseTag != SymLinkTag
? null
: Encoding.Unicode.GetString(reparseDataBuffer.PathBuffer, reparseDataBuffer.PrintNameOffset, reparseDataBuffer.PrintNameLength));
}
}