From 8971fdb6ca20215eb466e4f69592c8ed42475e1f Mon Sep 17 00:00:00 2001
From: TomasM <tomas@slax.org>
Date: Thu, 11 Oct 2018 04:27:19 -0500
Subject: [PATCH] add tools to manipulate initramfs images

---
 initramfs/tools/initramfs_repack | 15 +++++++++++++++
 initramfs/tools/initramfs_unpack | 15 +++++++++++++++
 2 files changed, 30 insertions(+)
 create mode 100755 initramfs/tools/initramfs_repack
 create mode 100755 initramfs/tools/initramfs_unpack

diff --git a/initramfs/tools/initramfs_repack b/initramfs/tools/initramfs_repack
new file mode 100755
index 0000000..8362856
--- /dev/null
+++ b/initramfs/tools/initramfs_repack
@@ -0,0 +1,15 @@
+#!/bin/bash
+
+set -e
+
+if [ "$1" = "-h" -o "$1" = "--help" -o "$2" = "" ]; then
+   echo ""
+   echo "Create initramfs image from a directory tree"
+   echo "Usage: $0 [source_directory] [target_initramfs_file.img]"
+   echo ""
+   exit 2
+fi
+
+cd "$1"
+
+find . -print | cpio -o -H newc | xz -f --extreme --check=crc32 >"$2"
diff --git a/initramfs/tools/initramfs_unpack b/initramfs/tools/initramfs_unpack
new file mode 100755
index 0000000..2dd4086
--- /dev/null
+++ b/initramfs/tools/initramfs_unpack
@@ -0,0 +1,15 @@
+#!/bin/bash
+
+set -e
+
+if [ "$1" = "-h" -o "$1" = "--help" -o "$2" = "" ]; then
+   echo ""
+   echo "Unpack initramfs image to a directory"
+   echo "Usage: $0 [source_initramfs_file.img] [target_directory]"
+   echo ""
+   exit 2
+fi
+
+mkdir -p "$2"
+
+(cd "$2"; xz -d | cpio -idv) < "$1"