lwres_hstrerror.docbook

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<refentry>

<refentryinfo>
<date>Jun 30, 2000</date>
</refentryinfo>

<refmeta>
<refentrytitle>lwres_hstrerror</refentrytitle>
<manvolnum>3</manvolnum>
<refmiscinfo>BIND9</refmiscinfo>
</refmeta>

  <docinfo>
    <copyright>
      <year>2004</year>
      <year>2005</year>
      <holder>Internet Systems Consortium, Inc. ("ISC")</holder>
    </copyright>
    <copyright>
      <year>2000</year>
      <year>2001</year>
      <holder>Internet Software Consortium.</holder>
    </copyright>
  </docinfo>

<refnamediv>
<refname>lwres_herror</refname>
<refname>lwres_hstrerror</refname>
<refpurpose>lightweight resolver error message generation</refpurpose>
</refnamediv>
<refsynopsisdiv>
<funcsynopsis>
<funcsynopsisinfo>#include &lt;lwres/netdb.h&gt;</funcsynopsisinfo>
<funcprototype>
<funcdef>
void
<function>lwres_herror</function></funcdef>
<paramdef>const char *s</paramdef>
</funcprototype>
<funcprototype>
<funcdef>
const char *
<function>lwres_hstrerror</function></funcdef>
<paramdef>int err</paramdef>
</funcprototype>
</funcsynopsis>
</refsynopsisdiv>

<refsect1>
<title>DESCRIPTION</title>

<para>
<function>lwres_herror()</function> prints the string
<parameter>s</parameter> on <type>stderr</type> followed by the string
generated by <function>lwres_hstrerror()</function> for the error code
stored in the global variable <constant>lwres_h_errno</constant>.
</para>

<para>
<function>lwres_hstrerror()</function> returns an appropriate string
for the error code gievn by <parameter>err</parameter>.  The values of
the error codes and messages are as follows:

<variablelist>
<varlistentry><term><errorcode>NETDB_SUCCESS</errorcode></term>
<listitem>
<para>
<errorname>Resolver Error 0 (no error)</errorname>
</para></listitem></varlistentry>
<varlistentry><term><errorcode>HOST_NOT_FOUND</errorcode></term>
<listitem>
<para>
<errorname>Unknown host</errorname>
</para></listitem></varlistentry>
<varlistentry><term><errorcode>TRY_AGAIN</errorcode></term>
<listitem>
<para>
<errorname>Host name lookup failure</errorname>
</para></listitem></varlistentry>
<varlistentry><term><errorcode>NO_RECOVERY</errorcode></term>
<listitem>
<para>
<errorname>Unknown server error</errorname>
</para></listitem></varlistentry>
<varlistentry><term><errorcode>NO_DATA</errorcode></term>
<listitem>
<para>
<errorname>No address associated with name</errorname>
</para></listitem></varlistentry>
</variablelist>
</para>
</refsect1>

<refsect1>
<title>RETURN VALUES</title>
<para>
The string <errorname>Unknown resolver error</errorname> is returned by
<function>lwres_hstrerror()</function>
when the value of
<constant>lwres_h_errno</constant>
is not a valid error code.
</para>
</refsect1>
<refsect1>
<title>SEE ALSO</title>
<para>
<citerefentry>
<refentrytitle>herror</refentrytitle><manvolnum>3</manvolnum>
</citerefentry>,

<citerefentry>
<refentrytitle>lwres_hstrerror</refentrytitle><manvolnum>3</manvolnum>
</citerefentry>.
</para>

</refsect1>
</refentry>