From 2fa5a77295ad6891e1ee9a81feaa4be4d05420cf Mon Sep 17 00:00:00 2001
From: dalto <dalto@fastmail.com>
Date: Thu, 25 Feb 2021 13:12:05 -0600
Subject: [PATCH] Write /etc/kernel/cmdline

---
 src/usr/share/libalpm/scripts/kernel-install | 18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

diff --git a/src/usr/share/libalpm/scripts/kernel-install b/src/usr/share/libalpm/scripts/kernel-install
index d3929de..7410b6d 100755
--- a/src/usr/share/libalpm/scripts/kernel-install
+++ b/src/usr/share/libalpm/scripts/kernel-install
@@ -1,8 +1,22 @@
-#!/bin/bash -e
+#!/usr/bin/env bash
 
 while read -r line; do
     version=$(basename "${line%/vmlinuz}")
     echo ":: Installing kernel $version"
-
+    
     kernel-install $1 "${version}" "${line}"
 done
+
+# If needed, set /etc/kernel/cmdline to enable kernel-install in a chroot
+if [[ ! -e /etc/kernel/cmdline ]]; then
+    mkdir -p /etc/kernel
+    
+    BOOT_OPTIONS=""
+    read -r -d '' -a line < /proc/cmdline
+    for i in "${line[@]}"; do
+        [[ "${i#initrd=*}" != "$i" ]] && continue
+        [[ "${i#BOOT_IMAGE=*}" != "$i" ]] && continue
+        BOOT_OPTIONS+="$i "
+    done
+    echo ${BOOT_OPTIONS} > /etc/kernel/cmdline
+fi