AW: Net-SNMP 5.5 on Windows Server 2008 with own subagent, can"t set scalar

>> This is in excerpt of my code at the beginning (in C):
>
>   [snip]
>
>OK - that looks like the code for the main body of the subagent.
>But you've got four routines that (presumably) initialise and register the MIB information that the subagent should report:
>
>>      init_mib_physicalInterfacesTable();
>>      init_mib_bChannelTable();
>>      init_mib_sessionTable();
>
>>  init_mib_scalar();
>
>What do these init routines look like?

Here the code of init_mib_physicalInterfacesTable():

------------------------------------------------
void initialize_table_physicalInterfacesTable(void)
{
        int retval=999;

    static oid physicalInterfacesTable_oid[] =
        { 1, 3, 6, 1, 4, 1, 17524, 2, 1, 2 };
    size_t physicalInterfacesTable_oid_len =
        OID_LENGTH(physicalInterfacesTable_oid);
    //netsnmp_table_data_set *table_set;

    /*
     * create the table structure itself
     */
    physicalInterfacesTable_table_set =
        netsnmp_create_table_data_set("physicalInterfacesTable");

    /*
     * comment this out or delete if you don't support creation of new rows
     */
    physicalInterfacesTable_table_set->allow_creation = 1;

    /***************************************************
     * Adding indexes
     */
    DEBUGMSGTL(("initialize_table_physicalInterfacesTable",
                "adding indexes to table physicalInterfacesTable\n"));
    netsnmp_table_set_add_indexes(physicalInterfacesTable_table_set, ASN_INTEGER,       /* index: physicalInterfaceIndex */
                                  0);

    DEBUGMSGTL(("initialize_table_physicalInterfacesTable",
                "adding column types to table physicalInterfacesTable\n"));
    netsnmp_table_set_multi_add_default_row
        (physicalInterfacesTable_table_set, COLUMN_PHYSICALINTERFACEINDEX,
         ASN_INTEGER, 0, NULL, 0, COLUMN_PHYSICALINTERFACENAME,
         ASN_OCTET_STR, 0, NULL, 0, COLUMN_PHYSICALINTERFACETYPE,
         ASN_OCTET_STR, 0, NULL, 0, COLUMN_PHYSICALINTERFACESTATE,
         ASN_OCTET_STR, 0, NULL, 0, 0);

    /*
     * registering the table with the master agent
     */
    /*
     * note: if you don't need a subhandler to deal with any aspects
     * of the request, change physicalInterfacesTable_handler to "NULL"
     */
    retval=netsnmp_register_table_data_set(netsnmp_create_handler_registration
                                    ("physicalInterfacesTable",
                                     physicalInterfacesTable_handler,
                                     physicalInterfacesTable_oid,
                                     physicalInterfacesTable_oid_len,
                                     HANDLER_CAN_RWRITE),
                                    physicalInterfacesTable_table_set,
                                    NULL);
        printf("Return of netsnmp_register_table_data_set(physicalInterfacesTable): %d\n",retval);
}

/** Initializes the mib_physicalInterfacesTable module */
void init_mib_physicalInterfacesTable(void)
{
        printf("init_mib_physicalInterfacesTable()\n");

    /*
     * here we initialize all the tables we're planning on supporting
     */
    initialize_table_physicalInterfacesTable();
}

/** handles requests for the physicalInterfacesTable table, if anything else needs to be done */
int
physicalInterfacesTable_handler(netsnmp_mib_handler * handler,
                                netsnmp_handler_registration * reginfo,
                                netsnmp_agent_request_info * reqinfo,
                                netsnmp_request_info * requests)
{
        printf("physicalInterfacesTable_handler()\n");
    /*
     * perform anything here that you need to do.  The requests have
     * already been processed by the master table_dataset handler, but
     * this gives you chance to act on the request in some other way
     * if need be.
     */
    return SNMP_ERR_NOERROR;
}
------------------------------------------------------

The functions "init_mib_bChannelTable()" and "init_mib_sessionTable()" looking similar to "init_mib_physicalInterfacesTable()".
They are made by mib2c.

>In particular, they'll presumably call some form of 'netsnmp_register_xxx'
>routine.   As part of that registration, there should be some
>mention of an 'xxx_handler' routine.

The subagent never print out the debug text in the physicalInterfacesTable_handler function! Same for sessionTable and bChannelTable.
Return of 'netsnmp_register_xxx' is in every function zero.

In  'init_mib_scalar' the function 'netsnmp_register_scalar()' is called for every scalar. Return of 'netsnmp_register_scalar()' is always zero.

Thanks
Julian


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