Hi,
After having spent a while on debugging my subagent, I finally find a way to
resolve it.
I've done a hack in the source code of the function table_helper_handler in
the file agent/helpers/table.c.
Indeed, this handler is written to handle tables registered from the rootOid
corresponding to the Oid of the Table. The problem is that with registration
of a region of MIB, the rootOid corresponds to the index of the table.
Here is my workaround (hardcoded for the moment):
int
table_helper_handler(netsnmp_mib_handler *handler,
netsnmp_handler_registration *reginfo,
netsnmp_agent_request_info *reqinfo,
netsnmp_request_info *requests)
{
netsnmp_request_info *request;
netsnmp_table_registration_info *tbl_info;
int oid_index_pos;
unsigned int oid_column_pos;
unsigned int tmp_idx;
size_t tmp_len;
int incomplete, out_of_range, cleaned_up = 0;
int status = SNMP_ERR_NOERROR, need_processing = 0;
oid *tmp_name;
netsnmp_table_request_info *tbl_req_info;
netsnmp_variable_list *vb;
if (!reginfo || !handler)
return SNMPERR_GENERR;
// If we the table has been registered with a range_subid
// the rootOid of the table corresponds to the total Len - 3 (Entry,
Column and index)
// To decrement only once the rootoid_len, I hardcode the value 13 for
my test
if ( reginfo->range_subid != 0 && reginfo->rootoid_len == 13 )
{
reginfo->rootoid_len -= 3;
}
Now, I want to know how this bug can be corrected in a safe and clean
manner...
=> at the end of the registration of the table (if a subid is set), set the
rootoid_len to the correct value ?
What do you think?
Arnaud.
>From: "Arnaud BODENAN" <[EMAIL PROTECTED]>
>To: net-snmp-users@lists.sourceforge.net
>Subject: Re: multiple Sub-agents managing the same table
>Date: Wed, 06 Sep 2006 17:35:52 +0200
>
>OK dave and thanks a lot for all the time you spend for me.
>
>I have a closer look to the function netsnmp_table_data_set_helper_handler
>and try to debug it as it seems that my creation/resgistration now works
>fine.
>
>If somebody has a brilliant idea about this problem, he's welcome!
>
>Arnaud.
>
> >From: "Dave Shield" <[EMAIL PROTECTED]>
> >To: "Arnaud BODENAN" <[EMAIL PROTECTED]>
> >CC: net-snmp-users@lists.sourceforge.net
> >Subject: Re: multiple Sub-agents managing the same table
> >Date: Wed, 6 Sep 2006 16:00:51 +0100
> >
> >On 06/09/06, Arnaud BODENAN <[EMAIL PROTECTED]> wrote:
> > > I follow your advice and do a walk on nsModuletable. So, With net-snmp
> > > v5.3.1, I launch twice the same application, and I get the following
> >result
> > > with an snmpwalk on nsModuleTable:
> >
> > [snip]
> >
> >I haven't the time to follow your travails in detail at the moment,
> >but that certainly looks as if the two rows are at least being
> >registered correctly. So if the walk doesn't deliver the right
> >results, it's probably due to problems within the dataset helper
> >handler (i.e. when processing a request), rather than anything in the
> >registration stage.
> >
> >Not that this knowledge gets you any further forward, but it's always
> >useful to know where you should be looking!
> >
> >Dave
> >
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Get stuff done quickly with pre-integrated technology to make your job easier
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