portable (FFI) experimentalMatt Morrow <mjm2002@gmail.com># !  read(2) write(2) open(2) close(2)"Bitwise or of the flags.      #      !"#$% c-io-0.1.0 System.C.IOOFlagO_TRUNCO_SYNCO_RSYNC O_NONBLOCKO_NOCTTYO_EXCLO_DSYNCO_CREATO_APPENDO_RDWRO_WRONLYO_RDONLYcreadcwritecopenccloseoflagso_trunco_synco_rsync o_nonblocko_nocttyo_exclo_dsynco_creato_appendo_rdwro_wronlyo_rdonlyc_closec_openc_writec_readfi