code: func MakeMountArgs(source, target, fstype string, options []string) []string {
  	// Build mount command as follows:
  	//   mount [-t $fstype] [-o $options] [$source] $target
  	mountArgs := []string{}
  	if len(fstype) > 0 {
  		mountArgs = append(mountArgs, "-t", fstype)
  	}
  	if len(options) > 0 {
  		mountArgs = append(mountArgs, "-o", strings.Join(options, ","))
  	}
  	if len(source) > 0 {
  		mountArgs = append(mountArgs, source)
  	}
  	mountArgs = append(mountArgs, target)
  
  	return mountArgs
  }
docs: // MakeMountArgs makes the arguments to the mount(8) command.
  // Implementation is shared with NsEnterMounter