#! /bin/sh
#
# Install and run Fedora Core 4 with qemu.
#

# Kickstart file to use:
KS=/var/www/html/mirror/ks.cfg
test -f $KS || KS=/home/mirror/ks/ks.cfg
# Image file to use as harddisk
IMAGE=fc4.vmdk
# Directory where to find Fedora Core:
FEDORA=/var/www/html/mirror/fedora/4/i386/os
test -d $FEDORA || FEDORA=/home/mirror/fedora/4/i386/os

# Install FC5:
test "$1" = "fc5" && {
    shift
    IMAGE=fc5.vmdk
    FEDORA=/var/www/html/mirror/fedora/5/i386/os
    test -d $FEDORA || FEDORA=/home/mirror/fedora/5/i386/os
}

# Install the development tree:
test "$1" = "devel" && {
    shift
    IMAGE=fc-devel.vmdk
    FEDORA=/var/www/html/mirror/fedora/development/i386/os
    test -d $FEDORA || FEDORA=/home/mirror/fedora/development/i386/os
}

# PXE files within the tree:
PXE=$FEDORA/images/pxeboot
# Qemu options to use:
OPTS="-net nic -net tap -hda $IMAGE"

# Install params for a serial console:
APPEND="initrd=initrd.img ramdisk_size=8192 text console=ttyS0,115200n8"
APPEND="$APPEND utf8 selinux=0 clock=pit ks=cdrom://ks.cfg"

# Load kernel acceleration module:
test -c /dev/kqemu || /sbin/modprobe kqemu

# Do we want to start a new installation?
if test "$1" = "install" ; then
    # Sanity check:
    test -d $FEDORA -a -d $PXE -a -f $KS || exit 1
    test -x /usr/bin/mkisofs || exit 1
    # Create an empty harddisk image:
    test -f $IMAGE || qemu-img create $IMAGE 7G
    # Installation needs more RAM then the running system:
    if test `hostname` = dudweiler.stuttgart.redhat.com ; then
        OPTS="$OPTS -m 384"
    else
        OPTS="$OPTS -m 576"
    fi
    # The following is not working for me, not sure why:
    #qemu $OPTS -nographic -kernel $PXE/vmlinuz \
    #     -initrd $PXE/initrd.img -append "$APPEND"
    # Use this for normall install options with a real console:
    #qemu $OPTS -cdrom $FEDORA/images/boot.iso -boot d
    # Copy boot data into a new directory:
    BOOTDIR=`mktemp -d bootdirXXXXXX`
    BOOTISO=`mktemp bootXXXXXX.iso`
    cp -ar $FEDORA/isolinux $BOOTDIR/
    cp -a $KS $BOOTDIR/
    chmod 644 $BOOTDIR/isolinux/*
    sed -i -e "s/^timeout .*/timeout 5/" $BOOTDIR/isolinux/isolinux.cfg
    sed -i -e "s#^  append .*#  append $APPEND#" $BOOTDIR/isolinux/isolinux.cfg
    #cat $BOOTDIR/isolinux/isolinux.cfg
    /usr/bin/mkisofs -quiet -o $BOOTISO -b isolinux/isolinux.bin \
        -c isolinux/boot.cat -no-emul-boot -boot-load-size 4 \
        -boot-info-table -R -J -V "serial console install" -T $BOOTDIR
    rm -rf $BOOTDIR
    time qemu $OPTS -nographic -cdrom $BOOTISO -boot d
    rm -f $BOOTISO
    exit 0
fi

time qemu $OPTS -m 256 -nographic
exit 0

# Things todo within the installed system (some of these are already done
# from anaconda for an install over serial line):
# - Modify /etc/inittab to start a serial getty:
#   s0:12345:respawn:/sbin/agetty 9600 ttyS0 linux
#   s0:12345:respawn:/sbin/mgetty -r -s 9600 /dev/ttyS0 linux
# - Modify /boot/grub/grub.conf:
#   #splashimage=(hd0,0)/grub/splash.xpm.gz
#   serial –unit=0 –speed=9600
#   terminal –timeout=10 --dump --lines=24 --silent serial console
# - Modify grub.conf to have "console=tty0 console=ttyS0,9600n8"
#   to output kernel messages on both consoles, last entry is
#   also used for keyboard input.
# - Modify /etc/securetty to include your serial device.

# Further configuration for the machine running qemu:
# - "echo 1 > /proc/sys/net/ipv4/ip_forward" or
#   "net.ipv4.ip_forward = 1" in /etc/sysctl.conf.
# - ip masquerading for a new network:
#   "/sbin/iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE"
# - /etc/qemu-ifup:
#   "#!/bin/sh
#   /sbin/ifconfig ${1##/*/} 172.20.0.1"
# - Maybe full /etc/qemu-ifup:
#   #!/bin/sh
#   /sbin/iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
#   echo 1 > /proc/sys/net/ipv4/ip_forward
#   /sbin/ifconfig ${1##/*/} 172.20.0.1