Fwd: vp->magic and OID passed by snmpd

#1 (**permalink**) 06-21-2007

--===============1659773563==
Content-Type: multipart/alternative;
boundary="----=_Part_88750_7742493.1182424037960"

------=_Part_88750_7742493.1182424037960
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Content-Disposition: inline

Sincere Apologies..
I copied the wrong error in my last mail..

I error I get is:
RFC1155-SMI::enterprises.6305.1.10.1.2.1.2.18.1.1.1 = No Such Instance
currently exists at this OID

---------- Forwarded message ----------
From: Shivani Garg <shivanigarg02@gmail.com>
Date: Jun 21, 2007 4:35 PM
Subject: vp->magic and OID passed by snmpd
To: net-snmp-coders@lists.sourceforge.net,
net-snmp-users@lists.sourceforge.net

Greetings to all.

I am using the code generated by mib2c for my MIB file. It contains an array
like this.. :

*oid systemInfo_variables_oid[] = { 1, 3, 6, 1, 4, 1, 6305, 1, 10, 1, 2, 1
};*
*struct variable7 systemInfo_variables[] = {*
*.*
*.*
*.*
*/* Out of all the elements of array, one is below, pasting only relevant
code here */*

*#define OVERALLDISKOCCUPANCYINKB 276*

* {OVERALLDISKOCCUPANCYINKB, ASN_UNSIGNED, RONLY,
var_systemDiskStatsNotfyAttrTable, 4, {2, 18, 1, 1}},*

*.*

*.*

*.*

*}*

When I fire a snmpget for OID 1.3.6.1.4.1.6305.1.10.1.2.1.2.18.1.1.1, I get
an error like this:

RFC1155-SMI::enterprises.6305.1.10.1.2.1.2.18.1.2.1 = No Such Instance
currently exists at this OID

In my function, when I print OID and vp->magic, OID passed is correct
whereas vp->magic is not 276 and hence the relevant case for the switch
statement is not hit. snmpd calls var_systemDiskStatsNotfyAttrTable with
incorrect vp->magic. Any anyone give me some pointers on this... I have
copied the relevant code below:

*/*
* var_systemDiskStatsNotfyAttrTable():
* Handle this table separately from the scalar value case.
* The workings of this are basically the same as for var_systemInfo
above.
*/
unsigned char *
var_systemDiskStatsNotfyAttrTable (struct variable *vp,
oid * name,
size_t * length,
int exact,
size_t * var_len,
WriteMethod ** write_method)
{
..*

*.*

*switch (vp->magic)
{
case OVERALLDISKOCCUPANCYINKB:
VAR = (int*)&p_resp->overall_disk_occupancy; /* XXX **

* default:*

* ERROR_MSG(" ");*

* }*

*.*

*.*

*}*

Thanks a lot in advance for your help.

Shivani

------=_Part_88750_7742493.1182424037960
Content-Type: text/html; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit
Content-Disposition: inline

<div>Sincere Apologies..</div>
<div>I copied the wrong error in my last mail..</div>
<div> </div>
<div>I error I get is:</div>
<div>RFC1155-SMI::enterprises.6305.1.10.1.2.1.2.18.1.1.1 = No Such Instance currently exists at this OID<br><br>---------- Forwarded message ----------<br><span class="gmail_quote">From: <b class="gmail_sendername">Shivani Garg
</b> <<a href="mailto:shivanigarg02@gmail.com">shivanigarg0 2@gmail.com</a>><br>Date: Jun 21, 2007 4:35 PM<br>Subject: vp->magic and OID passed by snmpd<br>To: <a href="mailto:net-snmp-coders@lists.sourceforge.net">
net-snmp-coders@lists.sourceforge.net</a>, <a href="mailto:net-snmp-users@lists.sourceforge.net">net-snmp-users@lists.sourceforge.net</a><br><br> </span></div>
<div>Greetings to all.</div>
<div> </div>
<div>I am using the code generated by mib2c for my MIB file. It contains an array like this.. :</div>
<div>
<p><strong>oid systemInfo_variables_oid[] = { 1, 3, 6, 1, 4, 1, 6305, 1, 10, 1, 2, 1 };</strong></p></div>
<div><strong>struct variable7 systemInfo_variables[] = {</strong></div>
<div><strong>.</strong></div>
<div><strong>.</strong></div>
<div><strong>.</strong></div>
<div><strong>/* Out of all the elements of array, one is below, pasting only relevant code here */</strong></div>
<div>
<p><strong><font color="#ff6666">#define OVERALLDISKOCCUPANCYINKB  276</font></strong></p>
<p><strong>    {OVERALLDISKOCCUPANCYINKB, ASN_UNSIGNED, RONLY,<br>   var_systemDiskStatsNotfyAttrTable, 4, {2, 18, 1, 1}},</strong></p>
<p><strong>.</strong></p>
<p><strong>.</strong></p>
<p><strong>.</strong></p>
<p><strong>}</strong></p>
<p> </p>
<p>When I fire a snmpget for OID 1.3.6.1.4.1.6305.1.10.1.2.1.2.18.1.1.1, I get an error like this:</p><font face="Helv" size="2">
<p>RFC1155-SMI::enterprises.6305.1.10.1.2.1.2.18.1.2.1 = No Such Instance currently exists at this OID</p></font>
<p>In my function, when I print OID and vp->magic, OID passed is correct whereas vp->magic is not 276 and hence the relevant case for the switch statement is not hit. snmpd calls var_systemDiskStatsNotfyAttrTable with incorrect vp->magic. Any anyone give me some pointers on this... I have copied the relevant code below:
</p>
<p><strong>/*<br> * var_systemDiskStatsNotfyAttrTable():<br> *&nb sp;  Handle this table separately from the scalar value case.<br> *   The workings of this are basically the same as for var_systemInfo above.<br> */<br>unsigned char *
<br>var_systemDiskStatsNotfyAttrTable (struct variable *vp,<br>       oid * name,<br>       size_t * length,<br>       int exact,<br>       size_t * var_len,<br>       WriteMethod ** write_method)<br>{<br>.</strong></p>
<p><strong>.</strong></p>
<p><strong>switch (vp->magic)<br>     {<br><font color="#ff0000">     case OVERALLDISKOCCUPANCYINKB:<br>   &nb sp;      VAR = (int*)&p_resp->overall_disk_occupancy; /* XXX *</font></strong></p>
<p><strong>     default:</strong></p>
<p><strong>      &nb sp; ERROR_MSG(" ");</strong></p>
<p><strong>      }</strong></p>
<p><strong>.</strong></p>
<p><strong>.</strong></p>
<p><strong>}</strong></p>
<p>Thanks a lot in advance for your help.</p>
<p>Shivani</p></div>

------=_Part_88750_7742493.1182424037960--

--===============1659773563==
Content-Type: text/plain; charset="us-ascii"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Content-Disposition: inline

-------------------------------------------------------------------------
This SF.net email is sponsored by DB2 Express
Download DB2 Express C - the FREE version of DB2 express and take
control of your XML. No limits. Just data. Click to get it now.
http://sourceforge.net/powerbar/db2/
--===============1659773563==
Content-Type: text/plain; charset="us-ascii"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Content-Disposition: inline

_______________________________________________
Net-snmp-coders mailing list
Net-snmp-coders@lists.sourceforge.net
https://lists.sourceforge.net/lists/...et-snmp-coders

--===============1659773563==--

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode