[archiso] Add archiso_shutdown hook.

STATUS: Working (std boot, loop_mnt, pxe) with copytoram=[y|n].

NEEDS: initscript > 2011.07.3, mkinitcpio > 0.7.2, mkinitcpio-busybox > 1.18.5-1

Purpose: we need this for propertly unmount $cow_device,
used for persistent dm-snapshot devices.

This hook is based on work from Tom Gundersen[#1],
but adapted for archiso things (specially the shutdown script)

[#1] http://mailman.archlinux.org/pipermail/arch-projects/2011-July/001549.html
[#2] http://projects.archlinux.org/initscripts.git/commit/?id=1fa7b4b453e96533ae1db3630031285e5fc302b3
[#3] http://mailman.archlinux.org/pipermail/arch-projects/2011-August/001749.html

Signed-off-by: Gerardo Exequiel Pozzi <vmlinuz386@yahoo.com.ar>

1 files changed, 22 insertions, 0 deletions

diff --git a/archiso/hooks/archiso_shutdown b/archiso/hooks/archiso_shutdown
new file mode 100644
index 0000000..1cc6e0e
--- /dev/null
+++ b/archiso/hooks/archiso_shutdown
@@ -0,0 +1,22 @@
+run_hook ()
+{
+    msg -n ":: Creating shutdown ramfs..."
+
+    mkdir -p /run/initramfs/usr/bin
+    mkdir /run/initramfs/usr/sbin
+    mkdir /run/initramfs/bin
+    mkdir /run/initramfs/sbin
+    mkdir /run/initramfs/lib
+    cp /bin/busybox /run/initramfs/bin/
+    cp /lib/ld-* /run/initramfs/lib/
+    cp /lib/lib* /run/initramfs/lib/
+    cp /sbin/dmsetup /run/initramfs/sbin/
+    if [[ -x /bin/nbd-client ]]; then
+        cp /bin/nbd-client /run/initramfs/bin/
+    fi
+
+    chroot /run/initramfs /bin/busybox --install
+    cp /shutdown /run/initramfs/
+
+    msg "done."
+}