package syscall func Exec(argv0 string, argv []string, envv []string) (err error) // The two SockaddrInet* structs have been copied from the Go source tree. type SockaddrInet4 struct { Port int Addr [4]byte raw RawSockaddrInet4 } type SockaddrInet6 struct { Port int ZoneId uint32 Addr [16]byte raw RawSockaddrInet6 }