Subversion Repositories livecd

#!/bin/bash

#

###############################################################

#

# Installes the LiveCD on local harddisk

# 

# Boot LiveCD and run this script as root

#

# Urs Beyerle, PSI

#

###############################################################

###############################################################

# Definitions

###############################################################

# files which should be restored from .ori files

FILES_RESTORE="/etc/init.d/netfs \

           /etc/init.d/autofs \

           /etc/init.d/halt \

           /etc/init.d/network

           /etc/init.d/functions \

           /etc/rc.d/rc.sysinit \

           /etc/sysconfig/afs \

           /etc/motd \

           /etc/redhat-release \

           /etc/rc.d/rc.sysinit"

LIVECD_INIT_SCRIPS="/etc/init.d/runfirst \

                    /etc/init.d/runveryfirst \

                    /etc/init.d/runlast \

                    /etc/init.d/kudzu-auto"

# Main directories which should be not be copied

DIR_NOT_COPY="/proc /dev /livecd /boot /afs /sys /mnt /media"

# Mount point of the new SL system

NEW=/mnt/harddisk

SCRIPTNAME=$( basename $0 )

###############################################################

# Functions

###############################################################

function usage() {

   ## Usage

   # ----------------------------------------------------------

   cat <<EOF

   $SCRIPTNAME [OPTIONS] [PARTITION]

   Installes LiveCD on PARTITION.

   OPTIONS:

    -h                  print this screen

    -mbr [device]       install grub on MBR of [device]

    -swap [partition]  	use [partition] as swap

    -y                  answer all questions with yes

EOF

}

###############################################################

# Main

###############################################################

### are we root

if [ "$( whoami )" != "root" ]; then

    echo "Please run this script as root."

    # exit 1

fi

### read options from command-line

while [ $# -gt 0 ]; do

    case "$1" in

       -h)

            usage; exit;;

       -swap)

            shift; SWAP_PART=$1; shift; continue;;

       -mbr)

            shift; MBR_DEV=$1; shift; continue;;

       -y)

            YES=$1; shift; continue;;

       *)

            INSTALL_PART=$1; break;;

    esac

done

echo

### test if MBR_DEV is given

if [ ! $MBR_DEV ]; then

    echo "No MBR device defined - where should grub be installed?"

    echo "Please see '$SCRIPTNAME -h'."; echo

    exit 1

fi

### test if $INSTALL_PART defined and exists

if [ ! $INSTALL_PART ]; then

    echo "No partition defined for installation"

    echo "Please see '$SCRIPTNAME -h'."; echo

    exit 1

fi

### test if $INSTALL_PART exists

fdisk -l | cut -d" " -f1 | grep -q "^${INSTALL_PART}$"

if [ "$?" != "0" ]; then

    echo "Partition $INSTALL_PART not found! (see 'disk -l')"; echo

    exit 1

fi

### set $INSTALL_DEV (eg. /dev/sda)

INSTALL_DEV=$( echo "$INSTALL_PART" | sed -e 's%\([sh]d[a-z]\)[0-9]*$%\1%' )

INSTALL_PART_NR=$( echo "$INSTALL_PART" | sed -e 's%.*/[sh]d[a-z]\([0-9]*\)$%\1%' )

### test if $SWAP_PART exists

if [ $SWAP_PART ]; then

    fdisk -l | cut -d" " -f1 | grep -q "^${SWAP_PART}$"

    if [ "$?" != "0" ]; then

	echo "Swap partition $SWAP_PART not found! (see 'disk -l')"; echo

	exit 1

    fi

    fdisk -l | grep "Linux swap" | cut -d" " -f1 | grep -q "^${SWAP_PART}$"

    if [ "$?" != "0" ]; then

	echo "Partition $SWAP_PART is not a Linux swap partition! (see 'disk -l')"; echo

	exit 1

    fi

fi

### print warning

echo "-----------------------------------------------------------"

echo "   LiveCD will be installed on partition $INSTALL_PART."

[ "$SWAP_PART" ] && echo " Partition $SWAP_PART will be used as swap partition."

echo

echo " !! Master Boot Record of $MBR_DEV will be overwritten !!"

echo "     !! All data on $INSTALL_PART will be lost !!"

echo "-----------------------------------------------------------"

echo

### continue ?

if [ ! $YES ]; then

    echo -n "Continue (y/N)? "

    read -n 1 key

    echo

    [ "$key" != "y" ] && exit 0

fi

echo

### format $INSTALL_PART

echo -n "Format $INSTALL_PART, please wait ... " 

mkfs.ext3 -q $INSTALL_PART || exit 1

echo "done."; echo

### mount $INSTALL_PART

echo -n "Try to mount $INSTALL_PART to $NEW ... "

mkdir -p $NEW

mount $INSTALL_PART $NEW || exit 1

echo "done."; echo

### copy root dirs

echo "Copy Live System to $INSTALL_PART:"

root_dirs=$( ls / )

for dir in $root_dirs; do

    # check if dir is not in $DIR_NOT_COPY

    do_not_copy=""

    for not_dir in $DIR_NOT_COPY; do

	if [ "$not_dir" = "/$dir" ]; then 

	    do_not_copy="yes"

	    break

	fi

    done

    # do not copy links

    [ -L /$dir ] && do_not_copy="yes"

    if [ ! $do_not_copy ]; then

	echo -n "  * Copy  /$dir ... "

	cp -a /$dir $NEW

	echo "done."

    fi

done

echo

### move /usr/opt /opt

if [ -d $NEW/usr/opt ]; then

    echo -n "Move /opt back ... "

    mv $NEW/usr/opt $NEW/

    echo "done."; echo

fi

### create dirs which were not copied

for dir in $DIR_NOT_COPY; do

    mkdir $NEW/$dir

done

rmdir $NEW/livecd $NEW/mnt

### copy back original files

echo -n "Restore original files ... " 

for file in $FILES_RESTORE; do

    [ -r $NEW/${file}.ori ] && cp -a $NEW/${file}.ori $NEW/${file} 

done

echo "done."; echo

### some mounts for $NEW

# mount --bind /dev $NEW/dev

# mount null -t proc $NEW/proc

# mount --bind /sys $NEW/sys 

# mount -t proc proc $NEW/proc

### re-install grub

echo "Re-install grub:"; echo

rpm --root $NEW -e --nodeps grub

yum -y --installroot=$NEW install grub

grub-install --root-directory=$NEW $MBR_DEV

echo "done."; echo

### re-install kernel

echo "Re-install kenel(s):"; echo

rpm --quiet --root $NEW -q kernel-smp && smp_installed="yes"

rpm --root $NEW -e --nodeps kernel

yum -y --installroot=$NEW install kernel

if [ $smp_installed ]; then

    rpm --root $NEW -e --nodeps kernel-smp

    yum -y --installroot=$NEW install kernel kernel-smp 

fi

echo "done."; echo

### create grub.conf file

echo "Create grub.conf"

KERNEL_VERSION=$( rpm -q --qf "%{V}-%{R}" kernel )

TITLE="Scientific Linux (${KERNEL_VERSION})"

# convert dev syntax to grub syntax

device_map=$NEW/boot/grub/device.map

GRUB_INSTALL_DEV=$( grep $INSTALL_DEV $device_map | awk '{ print $1 }' )

GRUB_ROOT_PART=$( echo "$GRUB_INSTALL_DEV" | sed "s%)$%,`expr $INSTALL_PART_NR - 1`)%" )

GRUB_WIN_PART=(hd0,0)

cat > $NEW/boot/grub/grub.conf <<EOF

# grub.conf generated by $SCRIPTNAME

default=0

timeout=5

splashimage=$GRUB_ROOT_PART/boot/grub/splash.xpm.gz

#hiddenmenu

title $TITLE

        root $GRUB_ROOT_PART

	kernel /boot/vmlinuz-$KERNEL_VERSION ro root=$INSTALL_PART

	initrd /boot/initrd-$KERNEL_VERSION.img

title Windows

        rootnoverify $GRUB_WIN_PART

        chainloader +1

EOF

chmod 600 $NEW/boot/grub/grub.conf

ln -s ../boot/grub/grub.conf $NEW/etc/grub.conf

ln -s ./grub.conf $NEW/boot/grub/menu.lst

echo "done."; echo

grub-install --root-directory=$NEW $MBR_DEV

### create /etc/fstab

cat > $NEW/etc/fstab <<EOF

$INSTALL_PART         /                    ext3    defaults        1 1

devpts            /dev/pts             devpts  gid=5,mode=620  0 0

tmpfs             /dev/shm             tmpfs   defaults        0 0

proc              /proc                proc    defaults        0 0

sysfs             /sys                 sysfs   defaults        0 0

EOF

if [ $SWAP_PART ]; then

    echo "$SWAP_PART         swap                 swap    defaults        0 0" >> $NEW/etc/fstab

fi

### remove LiveCD init.d scripts

for file in $LIVECD_INIT_SCRIPS; do

    rm -f $NEW/$file

done

### umount $INSTALL_PART

# umount $INSTALL_PART