temporarily source udev rules from system config

cmd/dkl-local-server/bootv2.go

@@ -16,8 +16,10 @@ import (
 	"slices"
 	"strings"
 
+	"github.com/cavaliergopher/cpio"
 	"github.com/klauspost/compress/zstd"
 
+	"novit.tech/direktil/pkg/base64"
 	"novit.tech/direktil/pkg/config"
 	"novit.tech/direktil/pkg/cpiocat"
 	"novit.tech/direktil/pkg/localconfig"
@@ -38,7 +40,7 @@ func renderBootstrapConfig(w http.ResponseWriter, ctx *renderContext) (err error
 func buildInitrd(out io.Writer, ctx *renderContext) (err error) {
 	_, cfg, err := ctx.Config()
 	if err != nil {
-		return
+		return fmt.Errorf("render config failed: %w", err)
 	}
 
 	zout, err := zstd.NewWriter(out, zstd.WithEncoderLevel(zstd.EncoderLevelFromZstd(12)))
@@ -51,10 +53,32 @@ func buildInitrd(out io.Writer, ctx *renderContext) (err error) {
 	// initrd
 	initrdPath, err := distFetch("initrd", ctx.Host.Initrd)
 	if err != nil {
-		return
+		return fmt.Errorf("fetch initrd failed: %w", err)
 	}
 	cat.AppendArchFile(initrdPath)
 
+	// copy config's udev rules (FIXME: too much logic for dls)
+	for _, file := range cfg.Files {
+		if !strings.HasPrefix(file.Path, "/etc/udev/rules.d/") {
+			continue
+		}
+
+		content := []byte(file.Content)
+		if c := file.Content64; c != "" {
+			content, err = base64.Decode(c)
+			if err != nil {
+				return fmt.Errorf("decode %s failed: %w", file.Path, err)
+			}
+		}
+
+		mode := file.Mode
+		if mode == 0 {
+			mode = 0o644
+		}
+
+		cat.AppendBytes(content, file.Path, cpio.FileMode(mode))
+	}
+
 	// embedded layers (modules)
 	for _, layer := range cfg.Layers {
 		switch layer {
@@ -65,7 +89,7 @@ func buildInitrd(out io.Writer, ctx *renderContext) (err error) {
 			}
 			modulesPath, err := distFetch("layers", layer, layerVersion)
 			if err != nil {
-				return err
+				return fmt.Errorf("fetch layer %s failed: %w", layer, err)
 			}
 
 			cat.AppendFile(modulesPath, "modules.sqfs")
@@ -75,7 +99,7 @@ func buildInitrd(out io.Writer, ctx *renderContext) (err error) {
 	// config
 	cfgBytes, err := ctx.BootstrapConfig()
 	if err != nil {
-		return
+		return fmt.Errorf("render bootstrap config failed: %w", err)
 	}
 	cat.AppendBytes(cfgBytes, "config.yaml", 0o600)