1 files changed, 21 insertions, 11 deletions
diff --git a/parabolaiso/initcpio/hooks/parabolaiso_loop_mnt b/parabolaiso/initcpio/hooks/parabolaiso_loop_mnt
index 1a8783d..f76d204 100644
--- a/parabolaiso/initcpio/hooks/parabolaiso_loop_mnt
+++ b/parabolaiso/initcpio/hooks/parabolaiso_loop_mnt
@@ -1,10 +1,16 @@
-# vim: set ft=sh:
+#!/bin/ash
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 run_hook () {
-    [[ -n "${img_label}" ]] && img_dev="/dev/disk/by-label/${img_label}"
-    [[ -z "${img_flags}" ]] && img_flags="defaults"
-    if [[ -n "${img_dev}" && -n "${img_loop}" ]]; then
-        mount_handler="parabolaiso_loop_mount_handler"
+    # shellcheck disable=SC2154
+    # defined via initcpio's parse_cmdline()
+    [ -n "${img_label}" ] && img_dev="/dev/disk/by-label/${img_label}"
+    [ -z "${img_flags}" ] && img_flags="defaults"
+    # shellcheck disable=SC2154
+    # defined via initcpio's parse_cmdline()
+    if [ -n "${img_dev}" ] && [ -n "${img_loop}" ]; then
+        export mount_handler="parabolaiso_loop_mount_handler"
     fi
 }
 
@@ -15,21 +21,25 @@ parabolaiso_loop_mount_handler () {
 
     msg ":: Setup a loop device from ${img_loop} located at device ${img_dev}"
     _mnt_dev "${img_dev}" "/run/parabolaiso/img_dev" "-r" "${img_flags}"
-    if [[ "${copytoram}" != "y" ]]; then
-        echo $(readlink -f ${img_dev}) >> /run/parabolaiso/used_block_devices
+    # shellcheck disable=SC2154
+    # defined via initcpio's parse_cmdline()
+    if [ "${copytoram}" != "y" ]; then
+        readlink -f "${img_dev}" >> /run/parabolaiso/used_block_devices
     fi
 
     if _dev_loop=$(losetup --find --show --read-only "/run/parabolaiso/img_dev/${img_loop}"); then
-        parabolaisodevice="${_dev_loop}"
+        export parabolaisodevice="${_dev_loop}"
     else
         echo "ERROR: Setting loopback device for file '/run/parabolaiso/img_dev/${img_loop}'"
         launch_interactive_shell
     fi
 
-    parabolaiso_mount_handler ${newroot}
+    parabolaiso_mount_handler "${newroot}"
 
-    if [[ "${copytoram}" == "y" ]]; then
-        losetup -d ${_dev_loop} 2>/dev/null
+    if [ "${copytoram}" = "y" ]; then
+        losetup -d "${_dev_loop}" 2>/dev/null
         umount /run/parabolaiso/img_dev
     fi
 }
+
+# vim: set ft=sh: