#!/bin/sh
# $1 is the kernel version
# this is a really simple way to create an initrd
# if you want to have modules instead of compiling
# support directly into the kernel
# this doesn't deal with RAID LVM 
# This uses busybox

# make basic dir structure
cd ${BUILD_DIRECTORY}/initrd
mkdir bin dev etc etc.ro lib proc sbin var sys usr mnt initrd
cd var
mkdir lock log
cd ../lib
mkdir -p modules/
cd ../usr
mkdir bin

# copy config files
cd ${INSTALL_ROOT}/etc
cp -a init.d udev fstab group passwd ${BUILD_DIRECTORY}/initrd/etc.ro/
cp -a init.d udev fstab group passwd ${BUILD_DIRECTORY}/initrd/etc/

# copy busybox
cd ${INSTALL_ROOT}/sbin
cp -a busybox ${BUILD_DIRECTORY}/initrd/sbin/

# link everything
cd ${BUILD_DIRECTORY}/initrd/sbin/
for i in insmod modprobe pivot_root reboot halt init mesg lsmod rmmod swapon \
         swapoff makedevs
do
	ln -s busybox $i
done

cd ../bin
for i in ash sh ls echo mount ln mkdir mknod chown chmod umount tar basename \
         chgrp cat chroot cp cut dd df dirname du env expr false head id \
	 install md5sum mv printf pwd realpath rm rmdir sleep sort sync tail \
	 tee touch tr true uname uniq who whoami yes which readlink sed dmesg \
	 more awk test
do
	ln -s ../sbin/busybox $i
done
cd ../usr/bin
for i in grep bunzip2 gzip gunzip unzip patch find xargs
do
	ln -s ../../sbin/busybox $i
done

# Copy kernel modules
cp -a ${INSTALL_ROOT}/lib/modules/$1 ${BUILD_DIRECTORY}/initrd/lib/modules/

# cp console null hd's
cp -a ${INSTALL_ROOT}/dev/console ${BUILD_DIRECTORY}/initrd/dev/
cp -a ${INSTALL_ROOT}/dev/null ${BUILD_DIRECTORY}/initrd/dev/

# link linuxrc to /bin/ash
ln -s ${BUILD_DIRECTORY}/initrd/linuxrc bin/ash

if [ ! -d ${INSTALL_ROOT} ] ; then
  mkdir ${INSTALL_ROOT}/initrd
fi