lwres_gai_strerror.docbook

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<refentry>
<refentryinfo>


<date>Jun 30, 2000</date>
</refentryinfo>
<refmeta>
<refentrytitle>lwres_gai_strerror</refentrytitle>
<manvolnum>3</manvolnum>
<refmiscinfo>BIND9</refmiscinfo>
</refmeta>
<refnamediv>
<refname>gai_strerror</refname>
<refpurpose>print suitable error string</refpurpose>
</refnamediv>
<refsynopsisdiv>
<funcsynopsis>
<funcsynopsisinfo>#include &lt;lwres/netdb.h&gt;</funcsynopsisinfo>
<funcprototype>
<funcdef>
char *
<function>gai_strerror</function></funcdef>
<paramdef>int ecode</paramdef>
</funcprototype>
</funcsynopsis>
</refsynopsisdiv>

<refsect1>
<title>DESCRIPTION</title>
<para>
<function>lwres_gai_strerror()</function>
returns an error message corresponding to an error code returned by
<function>getaddrinfo()</function>.
The following error codes and their meaning are defined in
<filename>include/lwres/netdb.h</filename>.
<variablelist>
<varlistentry><term><errorcode>EAI_ADDRFAMILY</errorcode></term>
<listitem>
<para>
address family for hostname not supported
</para>
</listitem></varlistentry>
<varlistentry><term><errorcode>EAI_AGAIN</errorcode></term>
<listitem>
<para>
temporary failure in name resolution
</para>
</listitem></varlistentry>
<varlistentry><term><errorcode>EAI_BADFLAGS</errorcode></term>
<listitem>
<para>
invalid value for
<constant>ai_flags</constant>
</para>
</listitem></varlistentry>
<varlistentry><term><errorcode>EAI_FAIL</errorcode></term>
<listitem>
<para>
non-recoverable failure in name resolution
</para>
</listitem></varlistentry>
<varlistentry><term><errorcode>EAI_FAMILY</errorcode></term>
<listitem>
<para>
<constant>ai_family</constant> not supported
</para>
</listitem></varlistentry>
<varlistentry><term><errorcode>EAI_MEMORY</errorcode></term>
<listitem>
<para>
memory allocation failure
</para>
</listitem></varlistentry>
<varlistentry><term><errorcode>EAI_NODATA</errorcode></term>
<listitem>
<para>
no address associated with hostname
</para>
</listitem></varlistentry>
<varlistentry><term><errorcode>EAI_NONAME</errorcode></term>
<listitem>
<para>
hostname or servname not provided, or not known
</para>
</listitem></varlistentry>
<varlistentry><term><errorcode>EAI_SERVICE</errorcode></term>
<listitem>
<para>
servname not supported for <constant>ai_socktype</constant>
</para>
</listitem></varlistentry>
<varlistentry><term><errorcode>EAI_SOCKTYPE</errorcode></term>
<listitem>
<para>
<constant>ai_socktype</constant> not supported
</para>
</listitem></varlistentry>
<varlistentry><term><errorcode>EAI_SYSTEM</errorcode></term>
<listitem>
<para>
system error returned in errno
</para>
</listitem></varlistentry>
</variablelist>
The message <errorname>invalid error code</errorname> is returned if
<parameter>ecode</parameter>
is out of range.
</para>
<para>
<constant>ai_flags</constant>,
<constant>ai_family</constant>
and
<constant>ai_socktype</constant>
are elements of the
<type>struct  addrinfo</type>
used by
<function>lwres_getaddrinfo()</function>.
</para>
</refsect1>

<refsect1>
<title>SEE ALSO</title>
<para>
<citerefentry>
<refentrytitle>strerror</refentrytitle><manvolnum>3</manvolnum>
</citerefentry>,

<citerefentry>
<refentrytitle>lwres_getaddrinfo</refentrytitle><manvolnum>3</manvolnum>
</citerefentry>,

<citerefentry>
<refentrytitle>getaddrinfo</refentrytitle><manvolnum>3</manvolnum>
</citerefentry>,

<citerefentry>
<refentrytitle>RFC2133</refentrytitle>
</citerefentry>.
</para>
</refsect1>
</refentry>