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74 lines
2.1 KiB
Go
74 lines
2.1 KiB
Go
// Copyright 2021 Google LLC
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//
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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 storage provides storage management functionality.
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package storage
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import (
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"fmt"
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"github.com/scjalliance/comshim"
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"github.com/go-ole/go-ole"
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"github.com/go-ole/go-ole/oleutil"
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)
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// ExtendedStatus is a placeholder for MSFT_StorageExtendedStatus
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//
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// Ref: https://docs.microsoft.com/en-us/previous-versions/windows/desktop/stormgmt/msft-storageextendedstatus
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type ExtendedStatus struct{}
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// Service represents a connection to the host Storage service (in WMI).
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type Service struct {
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wmiIntf *ole.IDispatch
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wmiSvc *ole.IDispatch
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}
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// Connect connects to the WMI provider for managing storage objects.
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// You must call Close() to release the provider when finished.
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//
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// Example: storage.Connect()
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func Connect() (Service, error) {
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comshim.Add(1)
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svc := Service{}
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unknown, err := oleutil.CreateObject("WbemScripting.SWbemLocator")
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if err != nil {
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comshim.Done()
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return svc, fmt.Errorf("CreateObject: %w", err)
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}
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defer unknown.Release()
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svc.wmiIntf, err = unknown.QueryInterface(ole.IID_IDispatch)
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if err != nil {
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comshim.Done()
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return svc, fmt.Errorf("QueryInterface: %w", err)
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}
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serviceRaw, err := oleutil.CallMethod(svc.wmiIntf, "ConnectServer", nil, `\\.\ROOT\Microsoft\Windows\Storage`)
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if err != nil {
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svc.Close()
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return svc, fmt.Errorf("ConnectServer: %w", err)
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}
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svc.wmiSvc = serviceRaw.ToIDispatch()
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return svc, nil
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}
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// Close frees all resources associated with a volume.
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func (svc *Service) Close() {
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svc.wmiIntf.Release()
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if svc.wmiSvc != nil {
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svc.wmiSvc.Release()
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}
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comshim.Done()
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}
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