From 0e3fcf3170ec146f68fd8a41470a2f9e08cd0ca0 Mon Sep 17 00:00:00 2001
From: Fierelier <fierelier@gmail.com>
Date: Thu, 11 Aug 2022 00:21:54 +0200
Subject: [PATCH] Add initrd tools

---
 path/wdvn-initrd-create  |  6 ++++++
 path/wdvn-initrd-extract | 25 +++++++++++++++++++++++++
 2 files changed, 31 insertions(+)
 create mode 100755 path/wdvn-initrd-create
 create mode 100755 path/wdvn-initrd-extract

diff --git a/path/wdvn-initrd-create b/path/wdvn-initrd-create
new file mode 100755
index 0000000..6527c13
--- /dev/null
+++ b/path/wdvn-initrd-create
@@ -0,0 +1,6 @@
+#!/bin/bash
+set -e
+INPUT="$1"
+OUTPUT="$2"
+cd "$INPUT"
+find . | cpio -H newc -o | gzip -9 > "$OUTPUT"
\ No newline at end of file
diff --git a/path/wdvn-initrd-extract b/path/wdvn-initrd-extract
new file mode 100755
index 0000000..3cd3546
--- /dev/null
+++ b/path/wdvn-initrd-extract
@@ -0,0 +1,25 @@
+#!/bin/bash
+set -e
+OLDPWD="$PWD"
+INPUT="$1"
+OUTPUT="$2"
+TEMP="$2.tmp"
+TYPE="$(file -b -L "$INPUT")"
+
+mkdir -p "$TEMP/basic"
+
+if [[ "$TYPE" == *"cpio archive"* ]]; then
+	mkdir -p "$TEMP/microcode"
+	cd "$TEMP/microcode"
+	BLOCKS="$(cpio -i <"$INPUT" 2>&1 >/dev/null | tail -1)"
+	BLOCKS="${BLOCKS%% *}"
+	dd if="$INPUT" of="$TEMP/initrd.img" bs=512 skip=$BLOCKS
+	cd "$TEMP/basic"
+	zcat "$TEMP/initrd.img" | cpio -i
+	rm "$TEMP/initrd.img" 
+else
+	cd "$TEMP/basic"
+	zcat "$INPUT" | cpio -i
+fi
+
+mv "$TEMP" "$OUTPUT"
\ No newline at end of file