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+>Unimplemented features</TITLE
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+>eCos</I
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+><A
+NAME="NET-SNMP-UNIMPLEMENTED-FEATURES">Unimplemented features</H1
+><P
+>Currently, the filesystem and persistent storage areas are
+left undone, to be implemented by the application.</P
+><P
+>The SNMP library package is intended to support client and
+agent code alike. It therefore contains lots of assumptions about
+the presence of persistent storage ie. a filesystem. Currently,
+by default, eCos has no such thing, so those areas have been simply
+commented out and made to return empty lists or say “no
+data here.”</P
+><P
+>Specifically the following files have omitted/unimplemented code :</P
+><P
+><TT
+CLASS="FILENAME"
+>PACKAGES/net/snmp/lib/VERSION/src/parse.c</TT
+></P
+><P
+>contains code to enumerate MIB files discovered in the system
+MIB directories (“<TT
+CLASS="FILENAME"
+>/usr/share/snmp/mibs</TT
+>”),
+and read them all in, building data structures that are used by
+client programs to interrogate an agent. This is not required in
+an agent, so the routine which enumerates the directories returns
+an empty list.</P
+><P
+><TT
+CLASS="FILENAME"
+>PACKAGES/net/snmp/lib/VERSION/src/read_config.c</TT
+>
+contains two systems:</P
+><P
+>The first tries to read the configuration file as described in the
+<A
+HREF="net-snmp-configuring-ecos.html"
+>snmpd.conf file</A
+> section and
+the second system contains code to record persistent data as files in a
+directory (typically <TT
+CLASS="FILENAME"
+>/var/ucd-snmp</TT
+>) thus preserving the
+state permanently.</P
+><P
+>The first part is partially implemented to support multiple profiles and enables
+dispatcher functionality as discussed in <A
+HREF="net-snmp-configuring-ecos.html#NET-SNMP-VERSION-USAGE"
+>the Section called <I
+>Version usage (v1, v2 or v3)</I
+></A
+>.
+The second part is not supported at all in the default implementation. As required,
+a cleaner interface to permit application code to manage persistent data will be
+developed in consultation with customers.</P
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