ioctl(fd, I_PUSH, "jconvu");
jconvu is a STREAMS module that is available to be pushed onto a stream. Usually, this module has to be pushed onto a stream between a raw device such as ptem(7M) and terminal line discipline module such as ldterm(7M).
jconvu has to be pushed when you set UTF---8 terminal. It converts up stream for UTF---8 into Japanese EUC and passes high module. It also converts down stream for Japanese EUC into UTF---8 and passes low module.
jconvu processes the following ioctls:
EUC_OXLON Start performing code conversion between UTF---8 and Japanese EUC for I/O stream.
EUC_OXLOFF Stop performing code conversion between UTF---8 and Japanese EUC for I/O stream.
jtty(1), setterm(1), stty(1), streamio(7I), jconv7(7M), jconv8(7M), jconvrs(7M), jconvru(7M), jconvs(7M), ldterm(7M), ptem(7M)
When you use jconvu with jconvrs(7M) or jconvru(7M) at once and `raw' is specified by stty(1), code convert function automatically become off without specification by EUC_OXLON / EUC_OXLOFF.