From 6ea8bad476ee406f580e103f915a55839db7fcc8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?St=C3=A9phane=20Lesimple?= <speed47_github@speed47.net>
Date: Sun, 22 Mar 2026 17:50:13 +0100
Subject: [PATCH] Fix false negative of clevis detection in initramfs

---
 autodecrypt.sh | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/autodecrypt.sh b/autodecrypt.sh
index 223317e..48e1cc6 100755
--- a/autodecrypt.sh
+++ b/autodecrypt.sh
@@ -153,6 +153,7 @@ function test_clevis_unlock {
 }
 
 function check_initramfs_hooks {
+    local clevis_found=0
     echo "Checking initramfs hooks..."
     
     if [ ! -f "/usr/share/initramfs-tools/hooks/clevis" ]; then
@@ -161,7 +162,11 @@ function check_initramfs_hooks {
     fi
     
     # Check if clevis hook is in the generated initramfs
-    if ! lsinitramfs /boot/initrd.img-$(uname -r) 2>/dev/null | grep -q clevis; then
+    set +o pipefail
+    # if grep finds a match, lsinitramfs gets SIGPIPE but we still want a success
+    lsinitramfs /boot/initrd.img-$(uname -r) 2>/dev/null | grep -q clevis && clevis_found=1
+    set -o pipefail
+    if [ "$clevis_found" = 0 ]; then
         echo "WARNING: Clevis not found in current initramfs. Will update initramfs."
         return 1
     fi