#!/bin/sh
#
#  If the pygrub flag is set, this script will install the necessary
# packages to boot the VM from the dom0 via pygrub. This script installs
# the kernel and modules and generates a grub menu.lst in the newly
# created maschine.
#
# Dmitry Nedospasov
# --
# http://www.nedos.net/

prefix=$1

#
#  Source our common functions
#

if [ -e /usr/share/xen-tools/common.sh ]; then
    . /usr/share/xen-tools/common.sh
else
    . ./hooks/common.sh
fi
#
# Log our start
#

logMessage Script $0 starting

if [ "${pygrub}" = "1" ]; then

#
# The type of kernel that we will be installing
#
# linux_kernel_type="desktop"
# 
linux_kernel_type="virtual"

linux_kernel_package="linux-image-${linux_kernel_type}"

logMessage "Installing the ${linux_kernel_package} kernel image"
if chroot ${prefix} /usr/bin/apt-cache show ${linux_kernel_package} >/dev/null 2>/dev/null; then
    logMessage "Package '${linux_kernel_package}' is available - installing"
    installDebianPackage ${prefix} initramfs-tools
    installDebianPackage ${prefix} ${linux_kernel_package}

# Force initrd if none exists
echo ${prefix}/boot/initrd* | grep -q 2\\.6
if [ $? -ne 0 ]; then
    chroot ${prefix} update-initramfs -c -k `ls -1 ${prefix}/lib/modules/ | head -n 1`
fi

# Generate grub menu.lst
DOMU_KERNEL=$(basename $(ls -1 ${prefix}/boot/vmlinuz* | tail -n 1))
DOMU_RAMDISK=$(basename $(ls -1 ${prefix}/boot/initrd*|tail -n 1))
DOMU_ISSUE=$(head -n 1 ${prefix}/etc/issue | awk -F '\' '{ print $1 }' | sed 's/[ \t]*$//')

#
# Generate a menu.lst for pygrub
#

generateDebianGrubMenuLst "${prefix}" "$DOMU_ISSUE" "$DOMU_KERNEL" "$DOMU_RAMDISK"


else
    logMessage "Package '${linux_kernel_package}' is not available"
fi

else
    logMessage pygrub not set, skipping kernel install
fi # if pygrub

#
#  Log our finish
#

logMessage Script $0 finished