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<!-- Copyright (C) 2003 Red Hat, Inc. --> <!-- This material may be distributed only subject to the terms --> <!-- and conditions set forth in the Open Publication License, v1.0 --> <!-- or later (the latest version is presently available at --> <!-- http://www.opencontent.org/openpub/). --> <!-- Distribution of the work or derivative of the work in any --> <!-- standard (paper) book form is prohibited unless prior --> <!-- permission is obtained from the copyright holder. --> <HTML ><HEAD ><TITLE >net_addrcmp</TITLE ><meta name="MSSmartTagsPreventParsing" content="TRUE"> <META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+ "><LINK REL="HOME" TITLE="eCos Reference Manual" HREF="ecos-ref.html"><LINK REL="UP" TITLE="TCP/IP Library Reference" HREF="tcpip-library-reference.html"><LINK REL="PREVIOUS" TITLE="link_addr" HREF="net-common-tcpip-manpages-link-addr.html"><LINK REL="NEXT" TITLE="ns" HREF="net-common-tcpip-manpages-ns.html"></HEAD ><BODY CLASS="SECT1" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#840084" ALINK="#0000FF" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >eCos Reference Manual</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="net-common-tcpip-manpages-link-addr.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" >Chapter 38. TCP/IP Library Reference</TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="net-common-tcpip-manpages-ns.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="SECT1" ><H1 CLASS="SECT1" ><A NAME="NET-COMMON-TCPIP-MANPAGES-NET-ADDRCMP">net_addrcmp</H1 ><TABLE BORDER="5" BGCOLOR="#E0E0F0" WIDTH="70%" ><TR ><TD ><PRE CLASS="SCREEN" >NET_ADDRCMP(3) System Library Functions Manual NET_ADDRCMP(3) NAME net_addrcmp - compare socket address structures SYNOPSIS #include <netdb.h> int net_addrcmp(struct sockaddr *sa1, struct sockaddr *sa2); DESCRIPTION The net_addrcmp() function compares two socket address structures, sa1 and sa2. RETURN VALUES If sa1 and sa2 are for the same address, net_addrcmp() returns 0. The sa_len fields are compared first. If they do not match, net_addrcmp() returns -1 or 1 if sa1->sa_len is less than or greater than sa2->sa_len, respectively. Next, the sa_family members are compared. If they do not match, net_addrcmp() returns -1 or 1 if sa1->sa_family is less than or greater than sa2->sa_family, respectively. Lastly, if each socket address structure's sa_len and sa_family fields match, the protocol-specific data (the sa_data field) is compared. If there's a match, both sa1 and sa2 must refer to the same address, and 0 is returned; otherwise, a value >0 or <0 is returned. HISTORY A net_addrcmp() function was added in OpenBSD 2.5. BSD July 3, 1999 BSD </PRE ></TD ></TR ></TABLE ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="net-common-tcpip-manpages-link-addr.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ecos-ref.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="net-common-tcpip-manpages-ns.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >link_addr</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="tcpip-library-reference.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >ns</TD ></TR ></TABLE ></DIV ></BODY ></HTML >
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