mirror of
https://github.com/prometheus-community/windows_exporter.git
synced 2026-02-07 21:46:37 +00:00
93 lines
2.3 KiB
Go
93 lines
2.3 KiB
Go
// SPDX-License-Identifier: Apache-2.0
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//
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// Copyright The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package cfgmgr32
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import (
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"fmt"
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"unsafe"
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"github.com/prometheus-community/windows_exporter/internal/headers/win32"
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"golang.org/x/sys/windows"
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)
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func GetDevicesInstanceIDs(deviceID string) ([]Device, error) {
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var (
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err error
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listSize uint32
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)
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deviceIDLWStr := win32.NewLPWSTR(deviceID)
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err = CMGetDeviceIDListSize(deviceIDLWStr, &listSize)
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if err != nil {
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return nil, err
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}
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listBuffer := make([]uint16, listSize)
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err = CMGetDeviceIDList(deviceIDLWStr, listBuffer)
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if err != nil {
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return nil, err
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}
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deviceInstanceIDs := win32.ParseMultiSz(listBuffer)
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devices := make([]Device, 0, len(deviceInstanceIDs))
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for _, deviceInstanceID := range deviceInstanceIDs {
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var devNode *windows.Handle
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err = CMLocateDevNode(&devNode, deviceInstanceID)
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if err != nil {
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return nil, err
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}
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var (
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busNumber uint32
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deviceAddress uint32
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propType uint32
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)
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propLen := uint32(4)
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err = CMGetDevNodeProperty(devNode, DEVPKEYDeviceBusNumber, &propType, unsafe.Pointer(&busNumber), &propLen)
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if err != nil {
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return nil, err
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}
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if propType != DEVPROP_TYPE_UINT32 {
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return nil, fmt.Errorf("unexpected property type: 0x%08X", propType)
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}
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err = CMGetDevNodeProperty(devNode, DEVPKEYDeviceAddress, &propType, unsafe.Pointer(&deviceAddress), &propLen)
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if err != nil {
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return nil, err
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}
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if propType != DEVPROP_TYPE_UINT32 {
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return nil, fmt.Errorf("unexpected property type: 0x%08X", propType)
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}
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devices = append(devices, Device{
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InstanceID: windows.UTF16ToString(deviceInstanceID),
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BusNumber: win32.UINT(busNumber),
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DeviceNumber: win32.UINT(deviceAddress >> 16),
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FunctionNumber: win32.UINT(deviceAddress & 0xFFFF),
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})
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}
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return devices, nil
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}
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