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<th colspan="3" align="center">LPRng Reference Manual: 24
Sep 2004 (For LPRng-3.8.28)</th>
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<h1 class="SECT1"><a name="PERMSPATH">17.3. Permission File
Location</a></h1>
<p>Options used:</p>
<ul>
<li>
<p><var class="LITERAL">perms_path=</var><span class=
"emphasis"><i class="EMPHASIS">path</i></span></p>
</li>
</ul>
<br>
<br>
<p>The <var class="LITERAL">perms_path=</var> configuration
variable specifies the location of the default permissions
file. The default value is:</p>
<div class="INFORMALEXAMPLE">
<a name="AEN8937"></a>
<pre class="SCREEN">
perms_path=${sysconfdir}/lpd.perms
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<br>
<p>The <tt class="FILENAME">lpd.perms</tt> file can be
obtained by running a program, in a similar manner to the <tt
class="FILENAME">printcap</tt> file. See <a href=
"filters.htm">Filters</a> for details on how the program
would be invoked. For example, assume the configuration
information specified:</p>
<div class="INFORMALEXAMPLE">
<a name="AEN8943"></a>
<pre class="SCREEN">
perms_path=|/usr/local/libexec/get_perms
</pre>
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<br>
<p>The <b class="APPLICATION">lpd</b> server will write
either a blank line for connection (<var class=
"LITERAL">SERVICE=X</var>) and global <b class=
"APPLICATION">lpc</b> permissions (<var class=
"LITERAL">SERVICE=C</var> and <var class=
"LITERAL">LPC=reread,lpd,default</var>) or the name of the
spool queue to the <var class="LITERAL">get_perms</var>
<acronym class="ACRONYM">STDIN</acronym>, and expects to read
permission information from its <acronym class=
"ACRONYM">STDOUT</acronym>. If the filter method is used, it
should always return the complete set of connection (<var
class="LITERAL">X</var>) and control (<var class=
"LITERAL">C</var> service values.</p>
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