From: Shashank Date <sdate@...>
Date: 2003-03-18T13:49:49+09:00
Subject: Re: name or label of a device/drive (os: win2000)

# Working code: try it with a formatted floppy disk in the A:\ drive
# Getting the serial number is left as an exercise ;-)

require 'Win32API'

STDOUT.sync = true
MAX_PATH = 260

def getVolInfo(buf)

  print buf+'> '

  params = [
    'P', #LPCTSTR lpRootPathName,
    'P', #LPTSTR lpVolumeNameBuffer,
    'L', #DWORD nVolumeNameSize,
    'P', #LPDWORD lpVolumeSerialNumber,
    'P', #LPDWORD lpMaximumComponentLength,
    'P', #LPDWORD lpFileSystemFlags,
    'P', #LPTSTR lpFileSystemNameBuffer,
    'L'  #DWORD nFileSystemNameSize
  ]
  returnValue = 'I' # BOOL
  fileSysNameBuf = "\0" * MAX_PATH
  volumeName   = "\0" * MAX_PATH
  serialNumber = ' ' * 4
  dwSysFlags   = ' ' * 4
  fileNameLen  = ' ' * 4
  getVolumeInformation = Win32API.new("kernel32", "GetVolumeInformation",
                                                                     params,
returnValue)
  if getVolumeInformation.call(buf, volumeName, MAX_PATH, serialNumber,
                     fileNameLen,  dwSysFlags, fileSysNameBuf, MAX_PATH) ==
0

    fileSysNameBuf = volumeName = nil

  else

    volumeName.gsub!(/\0/, '')
    volumeName.strip!

    fileSysNameBuf.gsub!(/\0/, '')
    fileSysNameBuf.strip!

  end

  return volumeName , fileSysNameBuf
end

p getVolInfo('C:\\')
p getVolInfo('A:\\')

# end code