Hi,
I have a follwing confusion implementing WMI methods in Miniport driver on Windows 2000.
Whenever I execute GetInfo1 method I get error “Generic Error” from the vb script generated by wmimofck.exe utility. I have seen that my ExecMethod is not getting invoked at all. Only QueryWmiDataBlock entry point is getting called.
But if I execute GetInfo2 method, the ExecMethod entry point is getting invoked and hence the method is succeeding.
I am retuning success for all the above 2 mentioned methods from QueryDataBlock().
My Mof file looks like this:
class METHOD_SAMPLE
{
[key, read] string InstanceName;
[read] boolean Active;
[Implemented, Description(“GetInfo1”): amended, WmiMethodId(1)] void GetInfo([in] uint8 MailBox0, [in] uint8 MailBox1, [out] uint8 Box);
[Implemented, Description(“GetInfo2”): amended, WmiMethodId(2)]
void GetInfo2([in] uint8 MailBox0, [out] uint8 Arg2, [out] uint8 Arg3);
};
and my C code in the miniport driver looks like:
MyQueryWmiDataBlock(
IN PVOID Context,
IN PSCSIWMI_REQUEST_CONTEXT RequestContext,
IN ULONG GuidIndex,
IN ULONG InstanceIndex,
IN ULONG InstanceCount,
IN OUT PULONG InstanceLengthArray,
IN ULONG BufferSize,
OUT PUCHAR Buffer
{
…
switch(GuidIndex) //instance =1;
{
case Method:
size = sizeof(ULONG);
status = SRB_STATUS_DATA_OVERRUN;
if (BufferSize >= size)
{
DbgPrint(“Buffer size correct\n”);
InstanceLengthArray[0] = size;
status = SRB_STATUS_SUCCESS;
}
else
{
BufferSize = size;
}
}
}
}
MyWmiExecuteMethod(…)
{
DbgPrint(“My ExecMethod\N”); ----------> It is not getting invoked for GetInfo1
}
TIA,
Gurpreet
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