Add formatting/crypto step

steps/30-formatting.step

@@ -0,0 +1,23 @@
+#!/bin/sh
+
+echo "~> Formatting EFI (/boot) directory to FAT-32"
+mkfs.fat -F32 ${blockdevice}1
+
+echo -n "~> Do you want to encrypt root? (Y/n) "
+read answer
+
+if [ "$answer" == "n" ]; then
+	echo "~> There are close to no reasons to not do this, but hey, you're an adult."
+	rootformat=${blockdevice}2
+else
+	echo "~> Formatting root (/) for crypto"
+	cryptsetup -v luksFormat ${blockdevice}2
+	echo "~> Here's the header crypto:"
+	cryptsetup luksDump ${blockdevice}2
+	echo "~> Open the crypt container"
+	cryptsetup luksOpen ${blockdevice}2 cryptroot
+	rootformat=/dev/mapper/cryptroot
+fi
+
+echo "~> Formatting $rootformat EXT4"
+mkfs.ext4 $rootformat