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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 >iso_addr</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="ipx" HREF="net-common-tcpip-manpages-ipx.html"><LINK REL="NEXT" TITLE="link_addr" HREF="net-common-tcpip-manpages-link-addr.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-ipx.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-link-addr.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-ISO-ADDR">iso_addr</H1 ><TABLE BORDER="5" BGCOLOR="#E0E0F0" WIDTH="70%" ><TR ><TD ><PRE CLASS="SCREEN" >ISO_ADDR(3) System Library Functions Manual ISO_ADDR(3) NAME iso_addr, iso_ntoa - network address conversion routines for Open System Interconnection SYNOPSIS #include <sys/types.h> #include <netiso/iso.h> struct iso_addr * iso_addr(char *cp); char * iso_ntoa(struct iso_addr *isoa); DESCRIPTION The routine iso_addr() interprets character strings representing OSI addresses, returning binary information suitable for use in system calls. The routine iso_ntoa() takes OSI addresses and returns ASCII strings rep- resenting NSAPs (network service access points) in a notation inverse to that accepted by iso_addr(). Unfortunately, no universal standard exists for representing OSI network addresses. The format employed by iso_addr() is a sequence of hexadecimal ``digits'' (optionally separated by periods), of the form: <hex digits>.<hex digits>.<hex digits> Each pair of hexadecimal digits represents a byte with the leading digit indicating the higher-ordered bits. A period following an even number of bytes has no effect (but may be used to increase legibility). A period following an odd number of bytes has the effect of causing the byte of address being translated to have its higher order bits filled with zeros. RETURN VALUES iso_ntoa() always returns a null terminated string. iso_addr() always returns a pointer to a struct iso_addr. (See BUGS.) SEE ALSO iso(4) HISTORY The iso_addr() and iso_ntoa() functions appeared in 4.3BSD-Reno. BUGS The returned values reside in a static memory area. The function iso_addr() should diagnose improperly formed input, and there should be an unambiguous way to recognize this. BSD June 4, 1993 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-ipx.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-link-addr.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >ipx</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" >link_addr</TD ></TR ></TABLE ></DIV ></BODY ></HTML >
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