From 554aaf0a89314827785ce6c8722f2b606e893a73 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mika=C3=ABl=20Cluseau?= <mikael.cluseau@gmail.com>
Date: Mon, 30 Jun 2025 12:00:55 +0200
Subject: [PATCH] cpiocat: add AppendDir

---
 cpiocat/cpiocat.go | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/cpiocat/cpiocat.go b/cpiocat/cpiocat.go
index 85b33b2..f1c6852 100644
--- a/cpiocat/cpiocat.go
+++ b/cpiocat/cpiocat.go
@@ -157,6 +157,24 @@ func (c *Cat) AppendFile(srcPath, archPath string) (r *Cat) {
 	return
 }
 
+func (c *Cat) AppendDir(archPath string, mode cpio.FileMode) (r *Cat) {
+	r = c
+	if c.err != nil {
+		return
+	}
+
+	var err error
+	defer func() { c.err = err }()
+
+	const DIR_FLAG = 0o004 << 12
+	err = c.cout.WriteHeader(&cpio.Header{
+		Name: archPath,
+		Mode: mode | DIR_FLAG,
+	})
+
+	return
+}
+
 func (c *Cat) AppendBytes(content []byte, archPath string, mode cpio.FileMode) (r *Cat) {
 	r = c
 	if c.err != nil {