From 2dc2cd6107b628ab84ebf01cb5c8eb7afb289ebe Mon Sep 17 00:00:00 2001
From: "Ward Nakchbandi (Cosmic Fusion)"
 <83735213+CosmicFusion@users.noreply.github.com>
Date: Thu, 31 Aug 2023 13:32:01 +0300
Subject: [PATCH] Update postinst

---
 debian/postinst | 24 ++++++++++++++++--------
 1 file changed, 16 insertions(+), 8 deletions(-)

diff --git a/debian/postinst b/debian/postinst
index dc24eb0..43fc99a 100644
--- a/debian/postinst
+++ b/debian/postinst
@@ -25,16 +25,24 @@ ln -sf /usr/lib/x86_64-linux-gnu/libdevmapper-event.so.1.02.1 /usr/lib/libdevmap
 
 touch /etc/vconsole.conf
 
-# Use the first crypttab entry as luks for booster (valid for calamares and probably most installers)
-if cat /etc/crypttab | grep -v '^#' | head -n1 | cut -f2 | grep -i "UUID="
+# Check if there are entries in crypttab
+if [[ $(cat /etc/crypttab | grep -v '^#') ]]
 then
-  if cat /boot/refind_linux.conf | grep -i 'rd.luks'
-  then
-    sed -i "s#root=#rd.luks.name="$(cat /etc/crypttab | grep -v '^#' | head -n1 | cut -f2 | sed "s#UUID=##")"="$(cat /etc/crypttab | grep -v '^#' | head -n1 | cut -f1)" root=#" /boot/refind_linux.conf
-  fi
+  # Do nothing
+  true
 else
-  echo -e "ERROR 1: /etc/crypttab is invalid!\nFirst crypttab entry (presumed to be root luks) is not defined via UUID\nPlease make sure to define luks for root as the first entry in /etc/crypttab via UUID (use blkid)"
-  exit 1
+  # Use the first crypttab entry as luks for booster (valid for calamares and probably most installers)
+  if cat /etc/crypttab | grep -v '^#' | head -n1 | cut -f2 | grep -i "UUID="
+  then
+    # Check if luks is already configured in refind
+    if cat /boot/refind_linux.conf | grep -i 'rd.luks'
+    then
+      sed -i "s#root=#rd.luks.name="$(cat /etc/crypttab | grep -v '^#' | head -n1 | cut -f2 | sed "s#UUID=##")"="$(cat /etc/crypttab | grep -v '^#' | head -n1 | cut -f1)" root=#" /boot/refind_linux.conf
+    fi
+  else
+    echo -e "ERROR 1: /etc/crypttab is invalid!\nFirst crypttab entry (presumed to be root luks) is not defined via UUID\nPlease make sure to define luks for root as the first entry in /etc/crypttab via UUID (use blkid)"
+    exit 1
+  fi
 fi