From: Dermot Bradley <dermot_bradley@yahoo.com>
Date: Thu, 22 July 2021 00:49 +0100
Subject: [PATCH] cloud-init: Rewrite hook-hotplug to not be Bash-specific

Rewrite shellscript to not be Bash-specific

---

diff -aur a/tools/hook-hotplug b/tools/hook-hotplug
--- a/tools/hook-hotplug
+++ b/tools/hook-hotplug
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 # This file is part of cloud-init. See LICENSE file for license information.
 
 # This script checks if cloud-init has hotplug hooked and if
@@ -11,12 +11,12 @@
 if is_finished; then
     # open cloud-init's hotplug-hook fifo rw
     exec 3<>/run/cloud-init/hook-hotplug-cmd
-    env_params=(
-        --subsystem="${SUBSYSTEM}"
-        handle
-        --devpath="${DEVPATH}"
-        --udevaction="${ACTION}"
-    )
+    env_params=" \
+        --subsystem=\"${SUBSYSTEM}\" \
+        handle \
+        --devpath=\"${DEVPATH}\" \
+        --udevaction=\"${ACTION}\" \
+    "
     # write params to cloud-init's hotplug-hook fifo
-    echo "${env_params[@]}" >&3
+    echo "${env_params}" >&3
 fi