const JL_DUMMY = 0o0
const JL_O_WRONLY = 0o01
const JL_O_RDONLY = 0o00
const JL_O_RDWR = 0o02
const JL_O_APPEND = 0o02000
const JL_O_CREAT = 0o0100
const JL_O_EXCL = 0o0200
const JL_O_TRUNC = 0o01000
