import ctypes
import subprocess

VMname = itsm.getParameter('VMname')
CheckPointName = itsm.getParameter('CheckPoint')


class disable_file_system_redirection():
    _disable = ctypes.windll.kernel32.Wow64DisableWow64FsRedirection
    _revert = ctypes.windll.kernel32.Wow64RevertWow64FsRedirection

    def __enter__(self):
        self.old_value = ctypes.c_long()
        self.success = self._disable(ctypes.byref(self.old_value))

    def __exit__(self, type, value, traceback):
        if self.success:
            self._revert(self.old_value)


def ExecuteCmd(cmd):
    with disable_file_system_redirection():
        obj = subprocess.Popen(["powershell", cmd], shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
        out, err = obj.communicate()
        ret = obj.returncode
        return out, err, ret


CMD = 'Checkpoint-VM -Name "' + VMname + '" -SnapshotName ' + CheckPointName
res = ExecuteCmd(CMD)
if not res[2]:
    print "checkpoint for specific VM has been Created"
else:
    print res[1]