1 files changed, 20 insertions, 2 deletions
diff --git a/internal/early.go b/internal/early.go
index 48dfcd54..218105f2 100644
--- a/internal/early.go
+++ b/internal/early.go
@@ -1,16 +1,34 @@
 package internal
 
 import (
+	"errors"
 	"fmt"
+	"io/fs"
+	"os"
+)
 
-	"git.ophivana.moe/cat/fortify/internal/util"
+const (
+	systemdCheckPath = "/run/systemd/system"
 )
 
 var SdBootedV = func() bool {
-	if v, err := util.SdBooted(); err != nil {
+	if v, err := SdBooted(); err != nil {
 		fmt.Println("warn: read systemd marker:", err)
 		return false
 	} else {
 		return v
 	}
 }()
+
+// SdBooted implements https://www.freedesktop.org/software/systemd/man/sd_booted.html
+func SdBooted() (bool, error) {
+	_, err := os.Stat(systemdCheckPath)
+	if err != nil {
+		if errors.Is(err, fs.ErrNotExist) {
+			err = nil
+		}
+		return false, err
+	}
+
+	return true, nil
+}