create directories required by busybox

Signed-off-by: Nico Schottelius <nico@wurzel.schottelius.org>

hacking/v3-busybox/create_initramfs.sh

@@ -5,14 +5,17 @@ set -ex
 initramfs_dir=$(mktemp -d /tmp/cdist-preos.XXXXXXX)
 # initramfs_dir=$1
 
-for dir in bin sbin etc proc sys newroot; do
+for dir in bin sbin etc proc sys newroot usr/bin usr/sbin; do
     mkdir -p ${initramfs_dir}/$dir
 done
 touch ${initramfs_dir}/etc/mdev.conf
 
 cp init "${initramfs_dir}/init"
 cp $(which busybox) "${initramfs_dir}/bin"
-ln -fs busybox "${initramfs_dir}/bin/sh"
+
+for link in sh mount; do
+    ln -fs busybox "${initramfs_dir}/bin/$link"
+done
 
 cd "${initramfs_dir}"
 find . | cpio -H newc -o | gzip

hacking/v3-busybox/create_iso.sh

@@ -0,0 +1,21 @@
+#!/bin/sh
+
+# FIXME: include os explorer to name preos
+
+if [ "$#" -ne 2 ]; then
+    echo "$0 dir-in iso-out"
+    exit 1
+fi
+
+indir=$1; shift
+iso=$1; shift
+
+version=0.3
+
+out=preos-${version}.iso
+
+    # -cache-inodes \
+genisoimage -r -J -l \
+    -V "cdist PreOS $version" \
+    -b boot/isolinux.bin -no-emul-boot -c boot.cat -boot-load-size 4 -boot-info-table \
+    -o "$iso" "$indir"

hacking/v3-busybox/qemu-test.sh

@@ -0,0 +1,12 @@
+#!/bin/sh
+
+if [ "$#" -ne 1 ]; then
+    echo "$0 iso"
+    exit 1
+fi
+
+iso=$1; shift
+
+qemu-system-x86_64 -m 512 -boot order=cd \
+    -drive file=$iso,media=cdrom
+