Write /etc/kernel/cmdline

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