1 files changed, 37 insertions, 0 deletions
diff --git a/mkinitfs/mkinitfs.trigger b/mkinitfs/mkinitfs.trigger
new file mode 100644
index 0000000..35b13c0
--- /dev/null
+++ b/mkinitfs/mkinitfs.trigger
@@ -0,0 +1,37 @@
+#!/bin/sh
+
+CONFIG='/etc/mkinitfs/mkinitfs.conf'
+if [ -f "$CONFIG" ]; then
+	case "$(. "$CONFIG" >/dev/null; printf %s "$disable_trigger")" in
+		yes | YES | true | TRUE | 1) exit 0;;
+	esac
+fi
+
+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 || {
+		echo "  mkinitfs failed!" >2
+		echo "  your system may not be bootable" >2
+		exit 1
+	}
+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 2>/dev/null # silence error in case of FAT
+fi
+
+# sync only the filesystem on /boot as that is where we are writing the initfs.
+sync -f /boot
+exit 0