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/*++
Copyright (C) 1991-1995 Microsoft Corporation
Module Name:
pxinfo.c
Abstract:
Environment:
Kernel mode only.
--*/
#include "halp.h"
NTSTATUS
HalpQueryInstalledBusInformation (
OUT PVOID Buffer,
IN ULONG BufferLength,
OUT PULONG ReturnedLength
);
#ifdef ALLOC_PRAGMA
#pragma alloc_text(PAGE,HaliQuerySystemInformation)
#pragma alloc_text(PAGE,HaliSetSystemInformation)
#endif
NTSTATUS
HaliQuerySystemInformation(
IN HAL_QUERY_INFORMATION_CLASS InformationClass,
IN ULONG BufferSize,
OUT PVOID Buffer,
OUT PULONG ReturnedLength
)
{
NTSTATUS Status;
PVOID InternalBuffer;
ULONG Length;
union {
HAL_POWER_INFORMATION PowerInf;
HAL_PROCESSOR_SPEED_INFORMATION ProcessorInf;
} U;
PAGED_CODE();
Status = STATUS_SUCCESS;
*ReturnedLength = 0;
Length = 0;
switch (InformationClass) {
case HalInstalledBusInformation:
Status = HalpQueryInstalledBusInformation (
Buffer,
BufferSize,
ReturnedLength
);
break;
default:
Status = STATUS_INVALID_LEVEL;
break;
}
//
// If non-zero Length copy data to callers buffer
//
if (Length) {
if (BufferSize < Length) {
Length = BufferSize;
}
*ReturnedLength = Length;
RtlCopyMemory (Buffer, InternalBuffer, Length);
}
return Status;
}
NTSTATUS
HaliSetSystemInformation (
IN HAL_SET_INFORMATION_CLASS InformationClass,
IN ULONG BufferSize,
IN PVOID Buffer
)
{
PAGED_CODE();
return STATUS_INVALID_LEVEL;
}
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