STREAMS-UX Programmer's Guide (February 2007)

Differences Between STREAMS/UX and System V Release 4 STREAMS
HP-UX Changes to STREAMS/UX Drivers and Modules
Appendix E
269
HP-UX Changes to STREAMS/UX Drivers and Modules
The unsupported drivers and modules include:
connld
console
ports
sxt
xt
NOTE Some STREAMS-based terminal I/O functionality is contained in a separate product called
STREAMS-TIO. It is part of the HP-UX runtime product. See the following manpages (which
are part of the STREAMS-TIO product): pts (7), ptm (7), ldterm (7), pterm (7) and pckt (7).
STREAMS/UX provides the following drivers and modules:
clone
strlog
sad
echo
sc
timod
tirdwr
pipemod
Entries for these drivers and modules can be found in the system file. General information about these
drivers follows. Information about the stream head is also included. Differences between the HP-UX and
SVR4.2 log and sad drivers are also described.
NOTE Any driver or module not explicitly listed as supported in this section is not supported.
clone
Major Number: 72
The clone is used to provide cloning. The major number of the device file for a cloneable driver must be the
clone driver’s major number, 72. The minor number is set to the real major number of the device.
strlog
Major Number: 73
Module ID Number: 44
Maximum Packet Size: INFPSZ
Minimum Packet Size: 0
High Water Mark: 2048
Low Water Mark: 128