use findmnt

usr/bin/remount-secure

@@ -79,7 +79,7 @@ remount_secure() {
    ## example status_file_full_path:
    ## /run/remount-secure/_home
 
-   mount_line_of_mount_folder="$(echo "$mount_output" | grep "$mount_folder ")" || true
+   mount_line_of_mount_folder="$(findmnt --noheadings "$mount_folder")" || true
 
    if echo "$mount_line_of_mount_folder" | grep --quiet "$new_mount_options" ; then
       $output_command "INFO: $mount_folder has already intended mount options. ($new_mount_options)"

usr/lib/dracut/modules.d/20remount-secure/module-setup.sh

@@ -5,6 +5,7 @@
 
 # called by dracut
 check() {
+    require_binaries findmnt || return 1
     require_binaries touch || return 1
     require_binaries grep || return 1
     require_binaries id || return 1
@@ -20,6 +21,7 @@ depends() {
 
 # called by dracut
 install() {
+    inst_multiple findmnt
     inst_multiple touch
     inst_multiple grep
     inst_multiple id