samba - Nov 2011 - dcerpc_svcctl_ChangeServiceConfig2W fails with DCERPC_FAULT_INVALID_TAG

Hi All,

I am trying to change the service description
through dcerpc_svcctl_ChangeServiceConfig2W() and I am getting the
error DCERPC_FAULT_INVALID_TAG.

What am I doing wrong?
Following is the snippet of code.

#define DESC_STRING "Test Description"

/* the pipe and handle are valid */
NTSTATUS changeServiceDescription (struct dcerpc_pipe * svc_pipe,
    struct policy_handle * psvc_handle)
{
NTSTATUS status;
struct svcctl_ChangeServiceConfig2W config;
struct SERVICE_DESCRIPTION svcDesc;
char *ctx = NULL;

ctx = talloc(NULL, char);
svcDesc.description = talloc_zero_size(ctx, strlen(DESC_STRING)+1);
if (svcDesc.description != NULL){
strncpy(svcDesc.description, DESC_STRING, strlen(DESC_STRING));
config.in.handle = psvc_handle;
config.in.info_level = SERVICE_CONFIG_DESCRIPTION;
config.in.info = &svcDesc;
status = dcerpc_svcctl_ChangeServiceConfig2W(svc_pipe, NULL, &config);
status = NT_RES(status, config.out.result);
TALLOC_FREE(ctx);
}

return NT_RES(status, r.out.result);
}

Thanks and Regards,
Paddy.