rename: src/zlevis-module and src/zlevis-module-setup

src/zlevis-module

@@ -0,0 +1,35 @@
+#!/bin/sh
+
+# Exit immediately if a command exits with a non-zero status
+set -e
+
+# Summary of the script's functionality
+summary="The dracut module of zlevis"
+
+# Display summary if requested
+if [ "$1" = "--summary" ]; then
+    echo "$summary"
+    exit 0
+fi
+
+# Load the ZFS kernel module
+modprobe zfs 2>/dev/null
+udevadm settle
+
+# Search for encrypted pool's by means of the cmdline root atribute
+local _root_vol="${root}"
+local _root_pool="${_root_vol%%/*}"
+
+# Import the root pool
+zpool import -N -d /dev $_root_pool
+
+# If the pool is encrypted run `zlevis decrypt` to obtain the key stored in the TPM and load the key
+if [ $(zpool list -H -o feature@encryption $_root_pool) = "active" ]; then
+	local _encryption_root=$(zfs get -H -o value encryptionroot $_root_vol)
+	if [ "$_encryption_root" != "-" ]; then
+		zlevis decrypt $_root_pool | zfs load-key -L prompt "$_root_pool" || echo "Failed to unlock $_root_pool with TPM"
+	fi
+fi
+
+# Exit with the status of the last command
+exit $?