From 2879013b96ec401b65200e652b5e81c0468d4489 Mon Sep 17 00:00:00 2001
From: William Pitcock <nenolod@dereferenced.org>
Date: Sat, 3 Sep 2011 00:27:50 -0500
Subject: main/syslinux: detect xen

---
 main/syslinux/update-extlinux | 24 +++++++++++++++++++++++-
 1 file changed, 23 insertions(+), 1 deletion(-)

(limited to 'main/syslinux/update-extlinux')

diff --git a/main/syslinux/update-extlinux b/main/syslinux/update-extlinux
index a2488cc8df..1ba98658e3 100755
--- a/main/syslinux/update-extlinux
+++ b/main/syslinux/update-extlinux
@@ -89,6 +89,28 @@ echo "MENU AUTOBOOT Alpine will be booted automatically in # seconds." >> $conf.
 echo "TIMEOUT $rtimeout" >> $conf.new
 
 lst=0
+if [ -f "/boot/xen.gz" ]; then
+	for kernel in $(find /boot -name vmlinuz-* -type f); do
+		tag=$(basename $kernel | cut -b9-)
+		everbose "Found Xen hypervisor: /boot/xen.gz, kernel: $kernel"
+
+		if [ -f "/boot/initramfs-$tag" ]; then
+			everbose "Found initramfs: /boot/initramfs-$tag"
+			initramfs="initrd=initramfs-$tag"
+		fi
+
+		echo "LABEL $lst" >> $conf.new
+		if [ "$lst" = "$default" ]; then
+			echo "  MENU DEFAULT" >> $conf.new
+		fi
+		echo "  MENU LABEL Xen + Linux $tag" >> $conf.new
+		echo "  KERNEL mboot.c32" >> $conf.new
+		echo "  APPEND xen.gz $xen_opts --- $(basename $kernel) root=$root modules=${modules}${TYPE:+,$TYPE} $default_kernel_opts --- $initramfs" >> $conf.new
+		echo "" >> $conf.new
+		lst=$(($lst + 1))
+	done
+fi
+
 for kernel in $(find /boot -name vmlinuz-* -type f); do
 	tag=$(basename $kernel | cut -b9-)
 	everbose "Found kernel: $kernel"
@@ -122,7 +144,7 @@ everbose "$lst entries found."
 
 for entry in /etc/update-extlinux.d/*; do
 	[ -f "$entry" ] && cat $entry >> $conf.new
-done	
+done
 
 if [ "$overwrite" = "1" ]; then
 	# keep a backup just in case
-- 
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