Specify the root to search from as argument. This avoids hardcoding
"/machine" in some places and makes it more flexible.
Signed-off-by: NAndreas Färber <afaerber@suse.de>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Anthony Liguori <anthony@codemonkey.ws>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>