114 lines
5.2 KiB
HTML
114 lines
5.2 KiB
HTML
<?xml version="1.0" encoding="UTF-8"?>
|
|
<!DOCTYPE html
|
|
PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
|
|
<html lang="en-us" xml:lang="en-us">
|
|
<head>
|
|
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
|
|
<meta name="security" content="public" />
|
|
<meta name="Robots" content="index,follow" />
|
|
<meta http-equiv="PICS-Label" content='(PICS-1.1 "http://www.icra.org/ratingsv02.html" l gen true r (cz 1 lz 1 nz 1 oz 1 vz 1) "http://www.rsac.org/ratingsv01.html" l gen true r (n 0 s 0 v 0 l 0) "http://www.classify.org/safesurf/" l gen true r (SS~~000 1))' />
|
|
<meta name="DC.Type" content="concept" />
|
|
<meta name="DC.Title" content="Pseudo-terminal" />
|
|
<meta name="abstract" content="i5/OS PASE supports both AT&T and Berkeley Software Distributions (BSD) style devices. From a programming perspective, these devices work in i5/OS PASE in the same way that they work on AIX." />
|
|
<meta name="description" content="i5/OS PASE supports both AT&T and Berkeley Software Distributions (BSD) style devices. From a programming perspective, these devices work in i5/OS PASE in the same way that they work on AIX." />
|
|
<meta name="DC.Relation" scheme="URI" content="rzalfinteract.htm" />
|
|
<meta name="copyright" content="(C) Copyright IBM Corporation 2000, 2006" />
|
|
<meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 2000, 2006" />
|
|
<meta name="DC.Format" content="XHTML" />
|
|
<meta name="DC.Identifier" content="rzalfpty" />
|
|
<meta name="DC.Language" content="en-us" />
|
|
<!-- All rights reserved. Licensed Materials Property of IBM -->
|
|
<!-- US Government Users Restricted Rights -->
|
|
<!-- Use, duplication or disclosure restricted by -->
|
|
<!-- GSA ADP Schedule Contract with IBM Corp. -->
|
|
<link rel="stylesheet" type="text/css" href="./ibmdita.css" />
|
|
<link rel="stylesheet" type="text/css" href="./ic.css" />
|
|
<title>Pseudo-terminal</title>
|
|
</head>
|
|
<body id="rzalfpty"><a name="rzalfpty"><!-- --></a>
|
|
<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
|
|
<h1 class="topictitle1">Pseudo-terminal</h1>
|
|
<div><p><span class="keyword">i5/OS™</span> PASE supports
|
|
both AT&T and Berkeley Software Distributions (BSD) style devices. From
|
|
a programming perspective, these devices work in <span class="keyword">i5/OS</span> PASE
|
|
in the same way that they work on AIX<sup>®</sup>.</p>
|
|
<p><span class="keyword">i5/OS</span> PASE allows a
|
|
maximum of 1024 instances for AT&T style devices, and a maximum of 592
|
|
BSD style devices. When the system is started, the first 32 instances of each
|
|
device type are created automatically.</p>
|
|
<div class="section"><h4 class="sectiontitle">Configure PTY devices in <span class="keyword">i5/OS</span> PASE</h4><p>On AIX,
|
|
an administrator uses <tt>smit</tt> to configure the number of available devices
|
|
of each type. In <span class="keyword">i5/OS</span> PASE,
|
|
these devices are configured in the following way:</p>
|
|
<ul><li>For AT&T-style devices, <span class="keyword">i5/OS</span> PASE
|
|
supports autoconfiguration. If the first 32 instances are in use and an application
|
|
tries to open another instance, the CHRSF device is created in the integrated
|
|
file system automatically, up to the limit of 1024 devices.</li>
|
|
<li>For BSD-style devices, you must create the CHRSF devices manually, using
|
|
the <span class="keyword">i5/OS</span> PASE <tt>mknod</tt> utility.
|
|
To do this, you need to know the major numbers for the BSD subordinate and
|
|
BSD primary devices as well as the naming convention. The following example
|
|
shell script shows how to create additional BSD pseudo-terminal (PTY) devices.
|
|
It creates them in groups of 16.<div class="note"><span class="notetitle">Note:</span> By using the code
|
|
examples, you agree to the terms of the <a href="codedisclaimer.htm">Code license and disclaimer information</a>.</div>
|
|
<pre>#!/QOpenSys/usr/bin/ksh
|
|
|
|
prefix="pqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
|
|
bsd_tty_major=32949
|
|
bsd_pty_major=32948
|
|
|
|
if [ $# -lt 1 ]
|
|
then
|
|
echo "usage: $(basename $0) ptyN "
|
|
exit 10
|
|
fi
|
|
|
|
function mkdev {
|
|
if [ ! -e $1 ]
|
|
then
|
|
mknod $1 c $2 $3
|
|
chown QSYS $1
|
|
chmod 0666 $1
|
|
fi
|
|
}
|
|
|
|
while [ "$1" ]
|
|
do
|
|
N=${1##pty}
|
|
if [ "$N" = "$1" -o "$N" = "" -o $N -lt 0 -o $N -gt 36 ]
|
|
then
|
|
echo "skipping: \"$1\": not valid, must be in the form ptyN where: 0 <= N <= 36"
|
|
shift
|
|
continue
|
|
fi
|
|
|
|
minor=$((N * 16))
|
|
pre=$(expr "$prefix" : ".\{$N\}\(.\)")
|
|
|
|
echo "creating /dev/[pt]ty${pre}0 - /dev/[pt]ty${pre}f"
|
|
for i in 0 1 2 3 4 5 6 7 8 9 a b c d e f
|
|
do
|
|
echo ".\c"
|
|
mkdev /dev/pty${pre}${i} $bsd_pty_major $minor
|
|
echo ".\c"
|
|
mkdev /dev/tty${pre}${i} $bsd_tty_major $minor
|
|
minor=$((minor + 1))
|
|
done
|
|
echo ""
|
|
|
|
shift
|
|
done
|
|
</pre>
|
|
</li>
|
|
</ul>
|
|
<p>For more information about PTY devices, see the <a href="http://www.ibm.com/servers/aix/library/" target="_blank">AIX documentation</a> Web
|
|
site.</p>
|
|
</div>
|
|
</div>
|
|
<div>
|
|
<div class="familylinks">
|
|
<div class="parentlink"><strong>Parent topic:</strong> <a href="rzalfinteract.htm" title="As you customize your i5/OS PASE programs to use i5/OS functions, you need to consider the ways in which your program will interact with them.">How i5/OS PASE programs interact with i5/OS</a></div>
|
|
</div>
|
|
</div>
|
|
</body>
|
|
</html> |