Signed-off-by: NLei Li <lilei@linux.vnet.ibm.com>
Reviewed-by: NEric Blake <eblake@redhat.com>
Reviewed-by: NMichael Roth <mdroth@linux.vnet.ibm.com>

*added stub for w32
Signed-off-by: NMichael Roth <mdroth@linux.vnet.ibm.com>