add preinit modularization work by Daniel Dickinson (cshore)

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@19331 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 17 insertions, 0 deletions

diff --git a/package/base-files/files/lib/firstboot/50_pivot b/package/base-files/files/lib/firstboot/50_pivot
new file mode 100644
index 000000000..fa1c7b540
--- /dev/null
+++ b/package/base-files/files/lib/firstboot/50_pivot
@@ -0,0 +1,17 @@
+#!/bin/sh
+
+# Copyright (C) 2006-2010 OpenWrt.org
+# Copyright (C) 2010 Vertical Communications
+
+with_fo_pivot() {
+    # switch back to squashfs (temporarily)
+    # and park the ramdisk ontop of /tmp/root
+    pivot /rom /mnt
+    mount -o move /mnt /tmp/root
+
+    # /jffs is the overlay
+    # /rom is the readonly
+    fopivot /jffs /rom
+}
+
+boot_hook_add switch2jffs with_fo_pivot