const JL_DUMMY = 0o0
const JL_O_WRONLY = 0x0001
const JL_O_RDONLY = 0x0000
const JL_O_RDWR = 0x0002
const JL_O_APPEND = 0x0008
const JL_O_CREAT = 0x0100
const JL_O_EXCL = 0x0400
const JL_O_TRUNC = 0x0200
const JL_O_TEMPORARY = 0x0040
const JL_O_SEQUENTIAL = 0x0020
const JL_O_RANDOM = 0x0010
