func pimonLock() error {
if xdg.FindRuntime(lockSuffix) != "" {
return fmt.Errorf("pimon lock file already exists: %s", xdg.UserRuntime(lockSuffix))
}
f, err := xdg.OpenRuntime(lockSuffix, os.O_EXCL|os.O_CREATE|os.O_WRONLY)
if err != nil {
return fmt.Errorf("cannot create pimon lock file: %v", err)
}
fmt.Fprintln(f, os.Getpid())
f.Close()
return nil
}
func pimonUnlock() {
_ = os.Remove(xdg.UserRuntime(lockSuffix))
}