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anderssonjohan/get-volumeinformation.ps1

Created February 26, 2021 14:23
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  1. anderssonjohan created this gist Feb 26, 2021.
    33 changes: 33 additions & 0 deletions get-volumeinformation.ps1
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    $pinvokes = @'
    [DllImport("Kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
    [return: MarshalAs(UnmanagedType.Bool)]
    public extern static bool GetVolumeInformationW(
    string rootPathName,
    System.Text.StringBuilder volumeNameBuffer,
    int volumeNameSize,
    out uint volumeSerialNumber,
    out uint maximumComponentLength,
    out uint fileSystemFlags,
    System.Text.StringBuilder fileSystemNameBuffer,
    int nFileSystemNameSize);
    [DllImport("Kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
    public static extern uint GetLogicalDriveStringsW(uint nBufferLength, [Out] char[] lpBuffer);
    '@
    $Kernel32 = Add-Type -MemberDefinition $pinvokes -Name 'Kernel32' -Namespace 'Win32' -PassThru


    $drives = [char[]]::new(512)
    $Kernel32::GetLogicalDriveStringsW($drives.length, $drives) | out-null
    $drives = (new-object System.String(,$drives))
    $drives = $drives.Split("`0", [System.StringSplitOptions]::RemoveEmptyEntries)
    Write-Host "Drives found by GetLogicalDriveStringsW: $drives"
    $drives | %{
    $volumeNameBuffer = New-Object -TypeName "System.Text.StringBuilder"
    $fileSystemNameBuffer = New-Object -TypeName "System.Text.StringBuilder"
    $res = $Kernel32::GetVolumeInformationW($_, $volumeNameBuffer, 255, [ref]0, [ref]0, [ref]0, $fileSystemNameBuffer, 255)
    Write-Host "GetVolumeInformationW for $_ returned $res"
    Write-Host "$_ volume name: $($volumeNameBuffer.ToString())"
    Write-Host "$_ filesystem name: $($fileSystemNameBuffer.ToString())"
    }

    20 changes: 20 additions & 0 deletions readme.md
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    Metricbeat fails using version 7.11 when GetVolumeInformationW returns false, which it does for floppy and cd-rom volumes.

    Example output from this script:

    ```
    PS> get-volumeinformation.ps1
    Drives found by GetLogicalDriveStringsW: A:\ C:\ D:\ L:\
    GetVolumeInformationW for A:\ returned False
    A:\ volume name:
    A:\ filesystem name:
    GetVolumeInformationW for C:\ returned True
    C:\ volume name:
    C:\ filesystem name: NTFS
    GetVolumeInformationW for D:\ returned False
    D:\ volume name:
    D:\ filesystem name:
    GetVolumeInformationW for L:\ returned True
    L:\ volume name: Logs
    L:\ filesystem name: NTFS
    ```