1 files changed, 11 insertions, 3 deletions
diff --git a/overlay/etc/archiso/functions b/overlay/etc/archiso/functions
index fdd48f4..9fffdcb 100644
--- a/overlay/etc/archiso/functions
+++ b/overlay/etc/archiso/functions
@@ -1,12 +1,20 @@
 # vim: set ft=sh:
 
-cmdline_param ()
+# kernel_cmdline <param> <default>
+# Looks for a parameter on the kernel's boot-time command line.
+#
+# returns: 0 if param was found. Also prints its value if it was a K=V param.
+#          1 if it was not. Also prints value passed as <default>
+#
+kernel_cmdline ()
 {
-    for param in ${CMDLINE}; do
+    for param in $(/bin/cat /proc/cmdline); do
         case "${param}" in
-            $1=*) echo "${param##*=}"; return ;;
+            $1=*) echo "${param##*=}"; return 0 ;;
+            $1) return 0 ;;
             *) continue ;;
         esac
     done
     [ -n "${2}" ] && echo "${2}"
+    return 1
 }