diff options
Diffstat (limited to 'lib/lwres/man/lwres_getnameinfo.html')
| -rw-r--r-- | lib/lwres/man/lwres_getnameinfo.html | 199 |
1 files changed, 199 insertions, 0 deletions
diff --git a/lib/lwres/man/lwres_getnameinfo.html b/lib/lwres/man/lwres_getnameinfo.html new file mode 100644 index 0000000..03eb4a6 --- /dev/null +++ b/lib/lwres/man/lwres_getnameinfo.html @@ -0,0 +1,199 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> +<!-- + - Copyright (C) 2000, 2001, 2004, 2005, 2007, 2014-2016, 2018, 2019 Internet Systems Consortium, Inc. ("ISC") + - + - This Source Code Form is subject to the terms of the Mozilla Public + - License, v. 2.0. If a copy of the MPL was not distributed with this + - file, You can obtain one at http://mozilla.org/MPL/2.0/. +--> +<html lang="en"> +<head> +<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> +<title>lwres_getnameinfo</title> +<meta name="generator" content="DocBook XSL Stylesheets V1.78.1"> +</head> +<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="refentry"> +<a name="id-1"></a><div class="titlepage"></div> + + + + + + + + <div class="refnamediv"> +<h2>Name</h2> +<p> + lwres_getnameinfo + — lightweight resolver socket address structure to hostname and + service name + + </p> +</div> + <div class="refsynopsisdiv"> +<h2>Synopsis</h2> + <div class="funcsynopsis"> +<pre class="funcsynopsisinfo">#include <lwres/netdb.h></pre> +<table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"> +<tr> +<td><code class="funcdef"> +int +<b class="fsfunc">lwres_getnameinfo</b>(</code></td> +<td>const struct sockaddr *<var class="pdparam">sa</var>, </td> +</tr> +<tr> +<td> </td> +<td>size_t <var class="pdparam">salen</var>, </td> +</tr> +<tr> +<td> </td> +<td>char *<var class="pdparam">host</var>, </td> +</tr> +<tr> +<td> </td> +<td>size_t <var class="pdparam">hostlen</var>, </td> +</tr> +<tr> +<td> </td> +<td>char *<var class="pdparam">serv</var>, </td> +</tr> +<tr> +<td> </td> +<td>size_t <var class="pdparam">servlen</var>, </td> +</tr> +<tr> +<td> </td> +<td>int <var class="pdparam">flags</var><code>)</code>;</td> +</tr> +</table> +<div class="funcprototype-spacer"> </div> +</div> + </div> + + <div class="refsection"> +<a name="id-1.7"></a><h2>DESCRIPTION</h2> + + + <p> + This function is equivalent to the + <span class="citerefentry"> + <span class="refentrytitle">getnameinfo</span>(3) + </span> function defined in RFC2133. + <code class="function">lwres_getnameinfo()</code> returns the + hostname for the + <span class="type">struct sockaddr</span> <em class="parameter"><code>sa</code></em> which + is + <em class="parameter"><code>salen</code></em> bytes long. The hostname is of + length + <em class="parameter"><code>hostlen</code></em> and is returned via + <em class="parameter"><code>*host.</code></em> The maximum length of the + hostname is + 1025 bytes: <code class="constant">NI_MAXHOST</code>. + </p> + + <p> The name of the service associated with the port number in + <em class="parameter"><code>sa</code></em> is returned in <em class="parameter"><code>*serv.</code></em> + It is <em class="parameter"><code>servlen</code></em> bytes long. The + maximum length + of the service name is <code class="constant">NI_MAXSERV</code> - 32 + bytes. + </p> + + <p> + The <em class="parameter"><code>flags</code></em> argument sets the + following + bits: + </p> +<div class="variablelist"><dl class="variablelist"> +<dt><span class="term"><code class="constant">NI_NOFQDN</code></span></dt> +<dd> + <p> + A fully qualified domain name is not required for local hosts. + The local part of the fully qualified domain name is returned + instead. + </p> + </dd> +<dt><span class="term"><code class="constant">NI_NUMERICHOST</code></span></dt> +<dd> + <p> + Return the address in numeric form, as if calling inet_ntop(), + instead of a host name. + </p> + </dd> +<dt><span class="term"><code class="constant">NI_NAMEREQD</code></span></dt> +<dd> + <p> + A name is required. If the hostname cannot be found in the DNS + and + this flag is set, a non-zero error code is returned. + If the hostname is not found and the flag is not set, the + address is returned in numeric form. + </p> + </dd> +<dt><span class="term"><code class="constant">NI_NUMERICSERV</code></span></dt> +<dd> + <p> + The service name is returned as a digit string representing the + port number. + </p> + </dd> +<dt><span class="term"><code class="constant">NI_DGRAM</code></span></dt> +<dd> + <p> + Specifies that the service being looked up is a datagram + service, and causes getservbyport() to be called with a second + argument of "udp" instead of its default of "tcp". This is + required + for the few ports (512-514) that have different services for UDP + and + TCP. + </p> + </dd> +</dl></div> +<p> + </p> + </div> + + <div class="refsection"> +<a name="id-1.8"></a><h2>RETURN VALUES</h2> + + <p><code class="function">lwres_getnameinfo()</code> + returns 0 on success or a non-zero error code if an error occurs. + </p> + </div> + <div class="refsection"> +<a name="id-1.9"></a><h2>SEE ALSO</h2> + + <p><span class="citerefentry"> + <span class="refentrytitle">RFC2133</span> + </span>, + <span class="citerefentry"> + <span class="refentrytitle">getservbyport</span>(3) + </span>, + <span class="citerefentry"> + <span class="refentrytitle">lwres</span>(3) + </span>, + <span class="citerefentry"> + <span class="refentrytitle">lwres_getnameinfo</span>(3) + </span>, + <span class="citerefentry"> + <span class="refentrytitle">lwres_getnamebyaddr</span>(3) + </span>. + <span class="citerefentry"> + <span class="refentrytitle">lwres_net_ntop</span>(3) + </span>. + </p> + </div> + <div class="refsection"> +<a name="id-1.10"></a><h2>BUGS</h2> + + <p> + RFC2133 fails to define what the nonzero return values of + <span class="citerefentry"> + <span class="refentrytitle">getnameinfo</span>(3) + </span> + are. + </p> + </div> +</div></body> +</html> |