external kill_subprocess : t -> unit = "ocaml_guestfs_kill_subprocess"
external add_drive : t -> string -> unit = "ocaml_guestfs_add_drive"
external add_cdrom : t -> string -> unit = "ocaml_guestfs_add_cdrom"
external kill_subprocess : t -> unit = "ocaml_guestfs_kill_subprocess"
external add_drive : t -> string -> unit = "ocaml_guestfs_add_drive"
external add_cdrom : t -> string -> unit = "ocaml_guestfs_add_cdrom"