push dkl init boot logic here

losetup.go

@@ -0,0 +1,26 @@
+package main
+
+import (
+	"syscall"
+
+	"github.com/freddierice/go-losetup/v2"
+)
+
+var loDevices = map[string]losetup.Device{}
+
+func losetupAttach(file string) losetup.Device {
+	if _, ok := loDevices[file]; !ok {
+		dev, err := losetup.Attach(file, 0, true)
+		if err != nil {
+			fatalf("failed to attach %q to a loop device: %v", file, err)
+		}
+
+		loDevices[file] = dev
+	}
+	return loDevices[file]
+}
+
+func mountSquahfs(source, target string) {
+	dev := losetupAttach(source)
+	mount(dev.Path(), target, "squashfs", syscall.MS_RDONLY, "")
+}