lwres_inetntop.html revision d4ef65050feac78554addf6e16a06c6e2e0bd331
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<!-- $Id: lwres_inetntop.html,v 1.2 2001/04/10 21:52:01 bwelling Exp $ -->
<HTML
><HEAD
><TITLE
>lwres_inetntop</TITLE
><META
NAME="GENERATOR"
CONTENT="Modular DocBook HTML Stylesheet Version 1.61
"></HEAD
><BODY
CLASS="REFENTRY"
BGCOLOR="#FFFFFF"
TEXT="#000000"
LINK="#0000FF"
VLINK="#840084"
ALINK="#0000FF"
><H1
><A
NAME="AEN1"
>lwres_inetntop</A
></H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="AEN8"
></A
><H2
>Name</H2
>lwres_net_ntop&nbsp;--&nbsp;lightweight resolver IP address presentation</DIV
><DIV
CLASS="REFSYNOPSISDIV"
><A
NAME="AEN11"
></A
><H2
>Synopsis</H2
><DIV
CLASS="FUNCSYNOPSIS"
><A
NAME="AEN12"
></A
><P
></P
><PRE
CLASS="FUNCSYNOPSISINFO"
>#include &lt;lwres/net.h&gt;</PRE
><P
><CODE
><CODE
CLASS="FUNCDEF"
>const char *
lwres_net_ntop</CODE
>(int af, const void *src, char *dst, size_t size);</CODE
></P
><P
></P
></DIV
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN21"
></A
><H2
>DESCRIPTION</H2
><P
><TT
CLASS="FUNCTION"
>lwres_net_ntop()</TT
>
converts an IP address of protocol family
<TT
CLASS="PARAMETER"
><I
>af</I
></TT
>
&mdash; IPv4 or IPv6 &mdash;
at location
<TT
CLASS="PARAMETER"
><I
>src</I
></TT
>
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.</P
><P
>The generated string is copied to
<TT
CLASS="PARAMETER"
><I
>dst</I
></TT
>
provided
<TT
CLASS="PARAMETER"
><I
>size</I
></TT
>
indicates it is long enough to store the ASCII representation
of the address.</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN30"
></A
><H2
>RETURN VALUES</H2
><P
>If successful, the function returns
<TT
CLASS="PARAMETER"
><I
>dst</I
></TT
>:
a pointer to a string containing
the presentation format of the address.
<TT
CLASS="FUNCTION"
>lwres_net_ntop()</TT
>
returns
<SPAN
CLASS="TYPE"
>NULL</SPAN
>
and sets the global variable
<TT
CLASS="CONSTANT"
>errno</TT
>
to
<SPAN
CLASS="ERRORCODE"
>EAFNOSUPPORT</SPAN
>
if the protocol family given in
<TT
CLASS="PARAMETER"
><I
>af</I
></TT
>
is not supported.</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN39"
></A
><H2
>SEE ALSO</H2
><P
><SPAN
CLASS="CITEREFENTRY"
><SPAN
CLASS="REFENTRYTITLE"
>RFC1884</SPAN
></SPAN
>,
<SPAN
CLASS="CITEREFENTRY"
><SPAN
CLASS="REFENTRYTITLE"
>inet_ntop</SPAN
>(3)</SPAN
>,
<SPAN
CLASS="CITEREFENTRY"
><SPAN
CLASS="REFENTRYTITLE"
>errno</SPAN
>(3)</SPAN
>.</P
></DIV
></BODY
></HTML
>