Hi Coders,
I have a mib that of the below structure. I have generated the C code using
mib2c( scalar.conf and iterate.conf) and modified the hooks
------------
| x.y.z |
------------
|
+----- 1
|----- 1.0 (scalar obj)
|----- 2.0 ( scalar obj)
|----- 3.0 ( scalar obj)
|----- 4.0 ( scalar obj)
+-------2
|-------1 ( Table not implemented)
+-------3
|------ 1 ( Table implemented)
|--------
snmpget works for the scalar objects and instances of table 3.1
Now when I do a snmpwalk/snmpgetnext on the table(x.y.z.3.1). My SNMP agent
crashes with the following stack
#0 0x00414499 in sprint_realloc_integer () from /mysnmp/lib/libnetsnmp.so.8
#1 0x0041282e in sprint_realloc_by_type () from /mysnmp/lib/libnetsnmp.so.8
#2 0x00527d51 in table_helper_handler () from
/mysnmp/lib/libnetsnmphelpers.so.8
#3 0x007ea81f in netsnmp_call_next_handler () from
/mysnmp/lib/libnetsnmpagent.so.8
#4 0x0051b4b2 in netsnmp_bulk_to_next_helper () from
/mysnmp/lib/libnetsnmphelpers.so.8
#5 0x007ea569 in netsnmp_call_handlers () from /mysnmp/lib/libnetsnmpagent.so.8
#6 0x007deb94 in handle_var_requests () from /mysnmp/lib/libnetsnmpagent.so.8
#7 0x007df7e7 in handle_pdu () from /mysnmp/lib/libnetsnmpagent.so.8
#8 0x007e096d in netsnmp_handle_request () from
/mysnmp/lib/libnetsnmpagent.so.8
#9 0x007e0f50 in handle_snmp_packet () from /mysnmp/lib/libnetsnmpagent.so.8
#10 0x00433689 in _sess_process_packet () from /mysnmp/lib/libnetsnmp.so.8
#11 0x00434ba0 in _sess_read () from /mysnmp/lib/libnetsnmp.so.8
#12 0x00435639 in snmp_sess_read () from /mysnmp/lib/libnetsnmp.so.8
#13 0x004356b2 in snmp_read () from /mysnmp/lib/libnetsnmp.so.8
>From the debug traces I see, that my agent is trying a getnext on x.y.z.3.2
I think my agent is not able to identify x.y.z.3.1. as a table. Also call does
not seem to have reached my module.
Am I missing some thing here?
initialize_table_myTable(void)
{
static oid myTable_oid[] = {x,y,z,3,1};
netsnmp_table_registration_info *table_info;
netsnmp_handler_registration *my_handler;
netsnmp_iterator_info *iinfo;
/* create the table structure itself */
table_info = SNMP_MALLOC_TYPEDEF(netsnmp_table_registration_info);
iinfo = SNMP_MALLOC_TYPEDEF(netsnmp_iterator_info);
/* if your table is read only, it's easiest to change the
HANDLER_CAN_RWRITE definition below to HANDLER_CAN_RONLY */
my_handler = netsnmp_create_handler_registration("myTable",
myTable_handler,
myTable_oid,
OID_LENGTH(myTable_oid),
HANDLER_CAN_RONLY);
if (!my_handler || !table_info || !iinfo)
return; /* mallocs failed */
/***************************************************
* Setting up the table's definition
*/
netsnmp_table_helper_add_index(table_info,
ASN_INTEGER);
table_info->min_column = MINCOLUMN;
table_info->max_column = MAXCOLUMN;
/* iterator access routines */
iinfo->get_first_data_point = myTable_get_first_data_point;
iinfo->get_next_data_point = myTable_get_next_data_point;
iinfo->table_reginfo = table_info;
/***************************************************
* registering the table with the master agent
*/
DEBUGMSGTL(("initialize_table_myTable",
"Registering table myTable as a table iterator\n"));
netsnmp_register_table(my_handler, iinfo);
}
On doing an SNMP walk on the mib, I see that my snmp agent is crashing at
getnext of x.y.z.1.4.0
Why is my agent not able to recognize the table in that subtree. What am I
missing?
P.S : I am using Net-SNMP 5.1.4.2 version
Thanks
Princy Gift
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