dbatools

1.0.166

internal/functions/Test-PendingReboot.ps1

                                function Test-PendingReboot {

    <#

        .SYNOPSIS

            Based on https://github.com/adbertram/PSSqlUpdater

            This function tests various registry values to see if the local computer is pending a reboot

        .NOTES

            Inspiration from: https://gallery.technet.microsoft.com/scriptcenter/Get-PendingReboot-Query-bdb79542

        .EXAMPLE

            PS> Test-PendingReboot

            This example checks various registry values to see if the local computer is pending a reboot.

    #>

    [OutputType([bool])]

    [CmdletBinding()]

    param

    (

        [Parameter(Mandatory)]

        [ValidateNotNullOrEmpty()]

        [DbaInstanceParameter]$ComputerName,

        [pscredential]$Credential,

        [switch]$PendingRename

    )

    process {

        $icmParams = @{

            ComputerName = $ComputerName.ComputerName

            Raw          = $true

            ErrorAction  = 'Stop'

        }

        if (Test-Bound -ParameterName Credential) {

            $icmParams.Credential = $Credential

        }

        $OperatingSystem = Get-DbaCmObject -ComputerName $ComputerName.ComputerName  -Credential $Credential -ClassName Win32_OperatingSystem -EnableException

        # If Vista/2008 & Above query the CBS Reg Key

        If ($OperatingSystem.BuildNumber -ge 6001) {

            $PendingReboot = Invoke-Command2 @icmParams -ScriptBlock { Get-ItemProperty -Path 'HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Component Based Servicing' -Name 'RebootPending' -ErrorAction SilentlyContinue }

            if ($PendingReboot) {

                Write-Message -Level Verbose -Message 'Reboot pending detected in the Component Based Servicing registry key'

                return $true

            }

        }

        # Query WUAU from the registry

        $PendingReboot = Invoke-Command2 @icmParams -ScriptBlock { Get-ItemProperty -Path 'HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Auto Update' -Name 'RebootRequired' -ErrorAction SilentlyContinue }

        if ($PendingReboot) {

            Write-Message -Level Verbose -Message 'WUAU has a reboot pending'

            return $true

        }

        # Query PendingFileRenameOperations from the registry

        if ($PendingRename) {

            $PendingReboot = Invoke-Command2 @icmParams -ScriptBlock { Get-ItemProperty -Path 'HKLM:\SYSTEM\CurrentControlSet\Control\Session Manager' -Name 'PendingFileRenameOperations' -ErrorAction SilentlyContinue }

            if ($PendingReboot -and $PendingReboot.PendingFileRenameOperations) {

                Write-Message -Level Verbose -Message 'Reboot pending in the PendingFileRenameOperations registry value'

                return $true

            }

        }

        return $false

    }

}

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