#!/bin/sh
#
#  Attempt to setup the kernel= + initrd= lines in the xen-tools configuration
# file.
#
# Steve
# --


#
#  Find a kernel
#
kernel=` ls -1 /boot | grep ^vm  |grep -v syms| grep xen | head -n 1`

if [ ! -z "${kernel}" ]; then

    #
    # it worked - update the configuration file.
    perl -pi.bak -e "s/^\s*kernel\s*=(.*)/kernel = \/boot\/${kernel}/" /etc/xen-tools/xen-tools.conf

else

    #
    # failed.  but the user can fixup 
    :
fi


#
# Find a ramdisk
#
ramdisk=` ls -1 /boot | grep ^init | grep xen | head -n 1`

if [ ! -z "${ramdisk}" ]; then

    #
    # it worked - update the configuration file.
    #
    perl -pi.bak -e "s/^\s*initrd\s*=(.*)/initrd = \/boot\/${ramdisk}/" /etc/xen-tools/xen-tools.conf
else

    # failed.  user can fixup
    :
fi





#
#  If we found a kernel and an initial ramdisk then modify the configuration
# files under /etc/xen
#
if [ ! -z "${ramdisk}" ] ; then

    if [ ! -z "${kernel}" ]; then

        #
        #  Process each file
        #
        for i in /etc/xen/*.cfg; do

            if [ -e $i ]; then
                
                cp $i $i.bak

                #
                #  Upgrade kernel
                #
                perl -pi -e "s/^\s*kernel\s*=(.*)/kernel = '\/boot\/${kernel}'/" $i

                #
                #  Upgrade ramdisk
                #
                perl -pi -e "s/^\s*ramdisk\s*=(.*)/ramdisk = '\/boot\/${ramdisk}'/" $i
            fi

        done
    fi
fi