1 files changed, 33 insertions, 0 deletions
diff --git a/system/mkinitfs/mkinitfs.trigger b/system/mkinitfs/mkinitfs.trigger
new file mode 100644
index 000000000..e8acc9785
--- /dev/null
+++ b/system/mkinitfs/mkinitfs.trigger
@@ -0,0 +1,33 @@
+#!/bin/sh
+
+for i in "$@"; do
+	# get last element in path
+	flavor=${i##*/}
+	if ! [ -f "$i"/kernel.release ]; then
+		# kernel was uninstalled
+		rm -f $( readlink -f /boot/initramfs-$flavor ) \
+			/boot/initramfs-$flavor /boot/vmlinuz-$flavor \
+			/boot/$flavor /boot/$flavor.gz /$flavor /$flavor.gz
+		continue
+	fi
+	abi_release=$(cat "$i"/kernel.release)
+	initfs=initramfs-$flavor
+	mkinitfs -o /boot/$initfs $abi_release
+done
+
+# extlinux will use path relative partition, so if /boot is on a
+# separate partition we want /boot/<kernel> resolve to /<kernel>
+if ! [ -e /boot/boot ]; then
+	ln -sf . /boot/boot
+fi
+
+# cleanup unused initramfs
+for i in /boot/initramfs-[0-9]*; do
+	[ -f $i ] || continue
+	if ! [ -f /boot/vmlinuz-${i#/boot/initramfs-} ]; then
+		rm "$i"
+	fi
+done
+
+sync
+exit 0