SnmpTfxQuery (Windows Embedded CE 6.0)
1/6/2010
This function resolves SNMP requests that contain variables within one or more of the SNMP extension agent's registered MIB views. This function is an element of the SNMPTfx API. It must be called from the SnmpExtensionQuery subagent routine.
Syntax
BOOL WINAPI SnmpTfxQuery(
SnmpTfxHandle tfxHandle,
BYTE RequestType,
RFC1157VarBindList* pVarBindList,
AsnInteger* pErrorStatus,
AsnInteger* pErrorIndex
);
Parameters
- tfxHandle
[in] Handle to the current subtree's MIB view. This is the value that is returned from the call to the SnmpTfxOpen function.
RequestType
[in] The request type that is passed in to the SnmpExtensionQuery function call. This is the SNMP request that is passed from the extensible agent to the subagent code. This parameter can be one of the following values defined by SNMPv2c.Value Description SNMP_PDU_GET
Retrieve the value or values of the specified variables.
SNMP_PDU_GETNEXT
Retrieve the value or values of the lexicographic successor of the specified variable.
SNMP_PDU_SET
Write a value within a specific variable.
SNMP_PDU_GETBULK
Retrieve the values of the specified variables.
- pVarBindList
[in, out] Pointer to the list of variable bindings.
pErrorStatus
[out] Pointer to a variable in which the result of the error status will be returned. This parameter can be one of the following values defined by SNMPv1.Value Description SNMP_ERRORSTATUS_NOERROR
The agent reports that no errors occurred during transmission.
SNMP_ERRORSTATUS_TOOBIG
The agent could not place the results of the requested operation into a single SNMP message.
SNMP_ERRORSTATUS_NOSUCHNAME
The requested operation identified an unknown variable. (v1 only)
SNMP_ERRORSTATUS_BADVALUE
The requested operation tried to change a variable but it specified either a syntax or value error. (v1 only)
SNMP_ERRORSTATUS_READONLY
The requested operation tried to change a variable that was not allowed to change according to the community profile of the variable. (v1 only)
SNMP_ERRORSTATUS_GENERR
An error other than one of those listed here occurred during the requested operation.
SNMP_ERRORSTATUS_NOACCESS
The variable is not in the community's view.
SNMP_ERRORSTATUS_WRONGTYPE
The variable's typing as received doesn't match the ASN.1 typing as kept by the local subagent.
SNMP_ERRORSTATUS_WRONGLENGTH
The ASN.1 encoded data length is incorrect.
SNMP_ERRORSTATUS_WRONGENCODING
The ASN.1 encoding is inconsistent.
SNMP_ERRORSTATUS_WRONGVALUE
The value of the variable is incorrect.
SNMP_ERRORSTATUS_NOCREATION
The variable cannot be created.
SNMP_ERRORSTATUS_INCONSISTENTVALUE
The variable cannot be assigned a value.
SNMP_ERRORSTATUS_RESOURCEUNAVAILABLE
The resource(s) needed to fulfill the request is/are not available.
SNMP_ERRORSTATUS_COMMITFAILED
A row-commit operation for this variable failed.
SNMP_ERRORSTATUS_UNDOFAILED
A row-undo operation for this variable failed.
SNMP_ERRORSTATUS_AUTHORIZATIONERROR
Unrecognized community name.
SNMP_ERRORSTATUS_NOTWRITABLE
Variable cannot be created or modified
SNMP_ERRORSTATUS_INCONSISTENTNAME
Variable cannot be created.
- pErrorIndex
[out] Pointer to a variable to which the result of the error index is returned.
Return Value
If the function succeeds, the return value is TRUE.
If the function fails, the return value is FALSE.
Remarks
The SnmpTfxQuery function should be called from the subagent's SnmpExtensionQuery routine. The first parameter to this call is the handle returned by the call to SnmpTfxOpen. All the other parameters should be passed directly from the corresponding parameters in the SnmpExtensionQuery call.
Requirements
| Header | snmpexts.h |
| Library | snmpapi.lib |
| Windows Embedded CE | Windows CE 3.0 and later |