STREAMS/UX for the HP 9000 Reference Manual

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Differences Between STREAMS/UX and System V Release 4 STREAMS
Message Structures
Message Structures
These structures are slightly different from the ones in the SVR4.2 Driver
manual.
msgb
This structure is defined in the file stream.h.
The msgb structure contains MSG_KERNEL_FIELDS, which defines fields
used internally by STREAMS/UX.
iocblk
The iocblk structure is defined in stream.h.
ioc_count is defined to be a member of a union.
copyreq
The copyreq structure is defined in stream.h.
cq_addr is defined to be a member of a union.
copyresp
The copyresp structure is defined in stream.h.
cp_rval is defined to be a member of a union.