Re: unregister_mib fails

unregister_mib fails even for standard UCD-DLMOD MIB.
While registering all the columns are explicitly registered. But during
unregistering, unregister_mib tries to do an exact match with the root oid
to the subtree children that were registered. This seems to fail.
Checking if unregister_mib_range might help.
Could someone comment if you have experience in this area? Thanks


On Fri, Mar 8, 2013 at 12:09 PM, Pal Saint <[email protected]> wrote:

> I added additional debugging to 'agent_registry.c' file and recompiled.
> During unregistering the MIB, the agent complaints about not finding the
> child and returns MIB_NO_SUCH_REGISTRATION.
>
> My subagents registers MIB using default context ("") and default
> priority. Any idea why the registering succeeds but not unregistering MIB?
> I appreciate your insights and pointers.
>
> 1695     while(unregistering){
> 1696         DEBUGMSGTL(("register_mib", "unregistering "));
> 1697         DEBUGMSGOIDRANGE(("register_mib", name, len, range_subid,
> range_ubound));
> 1698         DEBUGMSG(("register_mib", "\n"));
> 1699
> 1700         list = netsnmp_subtree_find(name, len,
> netsnmp_subtree_find_first(context),
> 1701                     context);
> 1702         if (list == NULL) {
> 1703             DEBUGMSGTL(("register_mib", "pal:failed to find
> subtree"));
> 1704             return MIB_NO_SUCH_REGISTRATION;
> 1705         }
> 1706
> 1707         for (child = list, prev = NULL; child != NULL;
> 1708             prev = child, child = child->children) {
> 1709             if (netsnmp_oid_equals(child->name_a, child->namelen,
> name, len) == 0 &&
> 1710                 child->priority == priority) {
> 1711                 break;              /* found it */
> 1712              }
> 1713         }
> 1714
> 1715         if (child == NULL) {
> 1716             DEBUGMSGTL(("register_mib", "pal:failed null child"));
> <<<<<<<<<<<< Returns from here
> 1717             return MIB_NO_SUCH_REGISTRATION;
> 1718         }
>
>
>
> On Thu, Mar 7, 2013 at 1:22 AM, Pal Saint <[email protected]> wrote:
>
>> All,
>>
>> We use REGISTER_MIB() to register our MIB tables, and use
>> unregister_mib() for unregistering them. However, when SIGHUP is sent to
>> snmpd, it fails to unregister the MIB variables. It fails with
>> "MIB_NO_SUCH_REGISTRATION". Registering and unregistering code  is actually
>> created by mib2c.old_api code generation configuration. Let me know if you
>> need more information.
>>
>> Here is snmpd debug info...
>>
>> dlmod: dlmod_create_module
>> dlmod: dlmod_load_module exampleTable: /usr/lib/snmp/dlmod/exampleTable.so
>> ................. Registering exampleTable
>> register_mib: registering "exampleTable" at
>> SNMPv2-SMI::enterprises.8075.1.3.2.1.1 with context ""
>> register_mib: registering "exampleTable" at
>> SNMPv2-SMI::enterprises.8075.1.3.2.1.2 with context ""
>> register_mib: registering "exampleTable" at
>> SNMPv2-SMI::enterprises.8075.1.3.2.1.3 with context ""
>> register_mib: registering "exampleTable" at
>> SNMPv2-SMI::enterprises.8075.1.3.2.1.4 with context ""
>> register_mib: registering "exampleTable" at
>> SNMPv2-SMI::enterprises.8075.1.3.2.1.5 with context ""
>> register_mib: registering "exampleTable" at
>> SNMPv2-SMI::enterprises.8075.1.3.2.1.6 with context ""
>> register_mib: registering "exampleTable" at
>> SNMPv2-SMI::enterprises.8075.1.3.2.1.7 with context ""
>>
>> ...
>> dlmod: Calling deinit_exampleTable()
>> deinit_exampleTable: unregistering exampleTable...
>> register_mib: unregistering SNMPv2-SMI::enterprises.8075.1.3.2
>> deinit_exampleTable: unregistering exampleTable failed:-1
>> dlmod: Module exampleTable unloaded
>>
>>
>

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