package daemon

import (
	"fmt"
	"os"
	"time"
)

// Logf writes a timestamped message to stderr with the [greywall:daemon] prefix.
func Logf(format string, args ...interface{}) {
	ts := time.Now().Format("2006-01-02 15:04:05")
	fmt.Fprintf(os.Stderr, ts+" [greywall:daemon] "+format+"\n", args...) //nolint:gosec // logging to stderr, not user-facing HTML
}