import DiskArbitration

func volumeUUIDForPath(path: String) -> String?
{
    var retval: String?

    if let session = DASessionCreate(kCFAllocatorDefault)
    {
        let fsStats = UnsafeMutablePointer<statfs>.alloc(1)
        defer { fsStats.destroy(1) }
        if statfs((path as NSString).UTF8String, fsStats) == 0
        {
            let deviceName = withUnsafePointer(&fsStats.memory.f_mntfromname,
            {
                (ptr) -> String? in
                let int8Ptr = unsafeBitCast(ptr, UnsafePointer<Int8>.self)
                return String.fromCString(int8Ptr)
            })

            if let device = deviceName,
                disk = DADiskCreateFromBSDName(kCFAllocatorDefault, session, device),
                description = DADiskCopyDescription(disk)
            {
                let myDict = description as NSDictionary
                let uuid = myDict[kDADiskDescriptionVolumeUUIDKey as String /* "DAVolumeUUIDD" */] as! CFUUID
                retval = CFUUIDCreateString(kCFAllocatorDefault, uuid) as String
            }
            else { retval = "" }
        }
    }

    return retval
}