lwres_inetntop.docbook

非常好的dns解析软件

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<refentry>

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

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

  <docinfo>
    <copyright>
      <year>2004</year>
      <year>2005</year>
      <year>2007</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_net_ntop</refname>
    <refpurpose>lightweight resolver IP address presentation</refpurpose>
  </refnamediv>
  <refsynopsisdiv>
    <funcsynopsis>
<funcsynopsisinfo>#include &lt;lwres/net.h&gt;</funcsynopsisinfo>
<funcprototype>
        <funcdef>
const char *
<function>lwres_net_ntop</function></funcdef>
        <paramdef>int <parameter>af</parameter></paramdef>
        <paramdef>const void *<parameter>src</parameter></paramdef>
        <paramdef>char *<parameter>dst</parameter></paramdef>
        <paramdef>size_t <parameter>size</parameter></paramdef>
      </funcprototype>
</funcsynopsis>
  </refsynopsisdiv>

  <refsect1>
    <title>DESCRIPTION</title>

    <para><function>lwres_net_ntop()</function>
      converts an IP address of protocol family
      <parameter>af</parameter> &mdash; IPv4 or IPv6 &mdash; at
      location <parameter>src</parameter> from network format to its
      conventional representation as a string.  For IPv4 addresses,
      that string would be a dotted-decimal.  An IPv6 address would be
      represented in colon notation as described in RFC1884.
    </para>

    <para>
      The generated string is copied to <parameter>dst</parameter>
      provided
      <parameter>size</parameter> indicates it is long enough to
      store the
      ASCII representation of the address.
    </para>

  </refsect1>
  <refsect1>
    <title>RETURN VALUES</title>

    <para>
      If successful, the function returns <parameter>dst</parameter>:
      a pointer to a string containing the presentation format of the
      address.  <function>lwres_net_ntop()</function> returns
      <type>NULL</type> and sets the global variable
      <constant>errno</constant> to <errorcode>EAFNOSUPPORT</errorcode> if
      the protocol family given in <parameter>af</parameter> is
      not
      supported.
    </para>

  </refsect1>
  <refsect1>
    <title>SEE ALSO</title>
    <para><citerefentry>
        <refentrytitle>RFC1884</refentrytitle>
      </citerefentry>,
      <citerefentry>
        <refentrytitle>inet_ntop</refentrytitle><manvolnum>3</manvolnum>
      </citerefentry>,
      <citerefentry>
        <refentrytitle>errno</refentrytitle><manvolnum>3</manvolnum>
      </citerefentry>.
    </para>
  </refsect1>
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