Get Volume UUID for Path

volumeUUIDForPath.swift

import DiskArbitration

extension URL {
  var volumeUUID: String? {
    guard self.isFileURL, let session = DASessionCreate(nil) else {
      return nil
    }

    var fsStats = statfs()
    guard statfs(self.path, &fsStats) == 0,
      let deviceName = String(validatingUTF8: &fsStats.f_mntfromname.0),
      let disk = DADiskCreateFromBSDName(nil, session, deviceName),
      let description = DADiskCopyDescription(disk) as NSDictionary? else {
        return nil
    }

    let key = kDADiskDescriptionVolumeUUIDKey as String
    return description[key].map { uuidRef in
      CFUUIDCreateString(nil, uuidRef as! CFUUID) as String
    }
  }
}