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.local \

           /etc/rc.d/rc.sysinit"

LIVECD_INIT_SCRIPTS="runfirst \

                    runveryfirst \

                    runlast \

                    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

# Name of the script

SCRIPTNAME=$( basename $0 )

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

# Functions

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

function usage() {

   ## Usage

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

   cat <<EOF

  $SCRIPTNAME [OPTIONS] -mbr [DEVICE] [PARTITION]

    Installes LiveCD on PARTITION and the boot loader grub

    into the Master Boot Record (MBR) of DEVICE.

  OPTIONS:

    -h   --help         print this screen

    -swap [partition]   use [partition] as swap

    -nogrub             do not install grub (leave MBR untouched) 

    -floppy             needed, if grub should be installed on floppy

    -y                  answer all questions with yes

  Example:

  $SCRIPTNAME -swap /dev/sda3 -mbr /dev/sda /dev/sda2

    Will install LiveCD on /dev/sda2 (= second partition on 

    first SATA disk). All data on /dev/sda2 will be deleted.

    /dev/sda3 has to be a Linux Swap partion. GRUB will be 

    installed in the MBR of /dev/sda (= first SATA disk).

EOF

}

function exit_now() {

    local exitcode=$1

    umount $INSTALL_PART 2>/dev/null

    exit $exitcode

}

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

# Main

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

### are we root?

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

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

    echo "Please run this script as root."

    exit_now 1

fi

### read options from command-line

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

while [ $# -gt 0 ]; do

    case "$1" in

       -h)

            usage; exit_now;;

       --help)

            usage; exit_now;;

       -swap)

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

       -mbr)

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

       -nogrub)

            NOGRUB=$1; shift; continue;;

       -floppy)

            FLOPPY=$1; shift; continue;;

       -y)

            YES=$1; shift; continue;;

       *)

            INSTALL_PART=$1; break;;

    esac

done

echo

### test if MBR_DEV is given

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

if [ ! $NOGRUB ]; then

    if [ ! $MBR_DEV ]; then

	echo "No MBR device defined."

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

	exit_now 1

    fi

fi

### test if $INSTALL_PART is defined and exists

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

if [ ! $INSTALL_PART ]; then

    echo "No partition defined for installation"

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

    exit_now 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_now 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_now 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_now 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

[ ! $NOGRUB ] && 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 key

    echo

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

fi

echo

### Backup MBR

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

### to do !!!!!!!!!!

###

### format $INSTALL_PART

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

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

mkfs.ext3 -q $INSTALL_PART || exit_now 1

echo "done."; echo

### mount $INSTALL_PART

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

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

mkdir -p $NEW

mount $INSTALL_PART $NEW || exit_now 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"

    fail=""

    if [ ! $do_not_copy ]; then

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

	cp -a /$dir $NEW || fail=true

	echo "done."

    fi

done

echo

if [ $fail ]; then

    echo "ERROR: Not everything was copied to $INSTALL_PART"

    exit_now 1

fi

### move /usr/opt back to /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

### do some mounts for chroot $NEW (no more needed)

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

# mount --bind /dev $NEW/dev

# mount --bind /sys $NEW/sys 

# mount -t proc proc $NEW/proc

### install grub

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

echo "Run grub-install: "; echo

mkdir -p $NEW/boot/grub

if [ $FLOPPY ]; then

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

else

    grub-install --no-floppy --root-directory=$NEW $MBR_DEV

fi

echo "done."; echo

### define kernel version

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

rpm --quiet -q kernel     && UP_installed=true

rpm --quiet -q kernel-smp && SMP_installed=true

[ $UP_installed ]  && KERNEL_VERSION=$( rpm -q --qf "%{V}-%{R}" kernel 2>/dev/null )

[ $SMP_installed ] && KERNEL_VERSION=$( rpm -q --qf "%{V}-%{R}" kernel-smp  2>/dev/null )

if [ ! $KERNEL_VERSION ]; then

    echo "ERROR: Kernel version could not be determined - installation failed"; echo

    exit_now 1

fi    

### 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`)%" )

### define active Windows partition -  to be fixed  !!!

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

WIN_installed=true

GRUB_WIN_PART=(hd0,0)

### create grub.conf file

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

echo "Create grub.conf:"

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

EOF

if [ $UP_installed ]; then

    echo " Add entry for UP kernel into grub.conf"

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

title Scientific Linux (${KERNEL_VERSION})

        root $GRUB_ROOT_PART

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

	initrd /boot/initrd-$KERNEL_VERSION.img

EOF

fi

if [ $SMP_installed ]; then

    echo " Add entry for SMP kernel into grub.conf"

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

title Scientific Linux (${KERNEL_VERSION}smp)

        root $GRUB_ROOT_PART

	kernel /boot/vmlinuz-${KERNEL_VERSION}smp ro root=$INSTALL_PART

	initrd /boot/initrd-${KERNEL_VERSION}smp.img

EOF

fi

if [ $WIN_installed ]; then

    echo " Add entry for Windows into grub.conf"

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

title Windows

        rootnoverify $GRUB_WIN_PART

        chainloader +1

EOF

fi

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

### install kernel into /boot

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

echo "Install kernel(s) ..."

[ -e /boot/vmlinuz ]      && BOOT_DIR=/boot

[ -e /boot/boot/vmlinuz ] && BOOT_DIR=/boot/boot

if [ ! $BOOT_DIR ]; then

    echo "ERROR: No kernel found - installation failed"; echo

    exit_now 1

fi

cp -a $BOOT_DIR/vmlinuz            $NEW/boot/vmlinuz-${KERNEL_VERSION}

cp -a $BOOT_DIR/vmlinuzs           $NEW/boot/vmlinuz-${KERNEL_VERSION}smp  2>/dev/null

cp -a $BOOT_DIR/System.map-*       $NEW/boot/

cp -a $BOOT_DIR/config-*           $NEW/boot/

cp -a $BOOT_DIR/grub/splash.xpm.gz $NEW/boot/grub/

echo "done."; echo

### 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

### make initrd 

### (needs $NEW/etc/fstab to find correct modules for root filesystem !!)

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

echo "Create initrd(s) ..."

if [ $UP_installed ]; then

    depmod -a ${KERNEL_VERSION}

    livecd-mkinitrd --fstab=$NEW/etc/fstab \

                    $NEW//boot/initrd-${KERNEL_VERSION}.img ${KERNEL_VERSION}

    if [ ! -e $NEW/boot/initrd-${KERNEL_VERSION}.img ]; then

	echo "ERROR: Failed to create $NEW/boot/initrd-${KERNEL_VERSION}.img"

	exit_now 1

    fi

fi

if [ $SMP_installed ]; then

    depmod -a ${KERNEL_VERSION}smp

    livecd-mkinitrd --fstab=$NEW/etc/fstab \

                    $NEW/boot/initrd-${KERNEL_VERSION}smp.img ${KERNEL_VERSION}smp

    if [ ! -e $NEW/boot/initrd-${KERNEL_VERSION}smp.img ]; then

	echo "ERROR: Failed to create $NEW/boot/initrd-${KERNEL_VERSION}smp.img"

	exit_now 1

    fi

fi

echo "done."; echo

### remove LiveCD init.d scripts

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

for file in $LIVECD_INIT_SCRIPTS; do

    rm -f $NEW/etc/init.d/$file

    for n in 0 1 2 3 4 5 6; do

	rm -f $NEW/etc/rc.d/rc${n}.d/*$file

    done

done

### restore cronjobs

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

mv /etc/cron_backup/sysstat /etc/cron.d/ 2>/dev/null

mv /etc/cron_backup/00-makewhatis.cron.weekly /etc/cron.weekly/00-makewhatis.cron 2>/dev/null

mv /etc/cron_backup/* /etc/cron.daily/

### turn on kudzu again

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

chkconfig kudzu on

### umount $INSTALL_PART

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

umount $INSTALL_PART