The unsupported drivers and modules include:
 |
| |
|
 | 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:
Entries for these drivers and modules can be found in the
STREAMS/UX master 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. |
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| |
|
clone |
|
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
The STREAMS/UX log driver is named strlog instead of log. The special device file is /dev/strlog. strlog provides the same functionality for logging as
described in the UNIX SVR4.2 System Files and Devices
Reference, with the exceptions described below:
The strlog kernel utility formats
binary arguments before sending messages up the stream.
STREAMS/UX does not provide a separate console logger
or /dev/console device. strlog does not support the I_CONSLOG
ioctl. strlog prints a log message on the console if the SL_CONSOLE
flag is set.
The HP-UX log_ctl structure does not contain a pri field. Priority and facility codes are not supported.
sad |
|
- Major Number:
74
- Module ID Number:
45
- Maximum Packet Size:
INFPSZ
- Minimum Packet Size:
0
- High Water Mark:
2048
- Low Water Mark:
128
The HP-UX sad driver device file is /dev/sad. The system administrator and users can open /dev/sad. However, only the system administrator can execute
the SAD_SAP ioctl system call. This differs from the System V sad
driver, which is accessed through the /dev/sad/admin and /dev/sad/user device files.
sad provides autopush functionality as described in
the UNIX SVR4.2 System Files and Devices Reference manual.
echo |
|
- Major Number:
116
- Module ID Number:
5000
- Maximum Packet Size:
INFPSZ
- Minimum Packet Size:
0
- High Water Mark:
2048
- Low Water Mark:
128
echo is a loopback driver used by the strvf STREAMS/UX verification tool. For more information
about strvf, see Chapter 1.
sc |
|
- Module ID
Number:
5002
- Maximum Packet Size:
INFPSZ
- Minimum Packet Size:
0
- High Water Mark:
2048
- Low Water Mark:
128
sc provides auxiliary functions for the sad driver.
timod |
|
- Module ID
Number:
5006
- Maximum Packet Size:
INFPSZ
- Minimum Packet Size:
0
- High Water Mark:
2048
- Low Water Mark:
128
timod provides TLI functionality as described in the UNIX
SVR4.2 System Files and Devices Reference manual.
tirdwr |
|
- Module ID
Number:
0
- Maximum Packet Size:
INFPSZ
- Minimum Packet Size:
0
- High Water Mark:
16K
- Low Water Mark:
128
tirdwr provides an alternative interface to the TLI library
for accessing a transport protocol provider. tirdwr is described in the UNIX SVR4.2 System
Files and Devices Reference manual.
Stream Head |
|
- Module ID
Number:
0
- Module Name:
sth
- Maximum Packet Size:
INFPSZ
- Minimum Packet Size:
0
- High Water Mark:
10240
- Low Water Mark:
1024
The Stream head provides the interface between HP-UX system
calls and STREAMS/UX utilities in the kernel. The Stream head is
the first queue pair of every Stream and is involved in flow control.
Data being read from a stream will be taken off the stream head.
pipemod |
|
- Module ID
Number:
5303
- Maximum Packet Size:
8192
- Minimum Packet Size:
0
- High Water Mark:
8192
- Low Water Mark:
8192
pipemod handles M_FLUSH messages in STREAMS/UX-based pipes. pipemod is described in the UNIX System V Release
4 Programmer's Guide: STREAMS manual.
