#! /bin/sh

##############################################################################
#
# Yoshinori OKUJI <yo@nexedi.com>
#
# Copyright (C) 2003 Nexedi SARL
#
# This program is Free Software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. ?See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA ?02111-1307, USA.
#
##############################################################################

INTERFACE="%(interface)s"
IP_ADDRESS="%(ip_address)s"
GATEWAY="%(gateway)s"
NFS_SERVER="%(nfs_server)s"
NFS_OPTIONS="hard,rsize=8192,wsize=8192,nolock"
MODULES="%(modules)s"

for module in $MODULES; do
  echo Inserting /lib/$module.ko...
  insmod /lib/$module.ko
done

#echo "Remount / in read-write..."
#mount -n -o remount,rw /

echo "Mounting /proc filesystem..."
mount -n -t proc none /proc
echo "Mounting /sys filesystem..."
mount -n -t sysfs none /sys
echo "Starting udev..."
udevstart
echo -n /sbin/hotplug > /proc/sys/kernel/hotplug

echo "INTERFACE = $INTERFACE"
echo "IP_ADDRESS = $IP_ADDRESS"
echo "GATEWAY = $GATEWAY"
echo "NFS_SERVER = $NFS_SERVER"

echo "Configuring $INTERFACE..."
ifconfig $INTERFACE $IP_ADDRESS up

if test x$GATEWAY = x; then
  :
else
  echo "Adding the default gateway $GATEWAY..."
  route add default gw $GATEWAY $INTERFACE
fi

echo "Here is the current routing table:"
route -n

echo "Mounting root filesystem..."
mount -n -t tmpfs none /sysroot/

echo "Mounting the nfs filesystem from $NFS_SERVER..."
mkdir /sysroot/nfsroot
mount -n -t nfs -o ro,$NFS_OPTIONS $NFS_SERVER:/ /sysroot/nfsroot

# create necessary directories
echo "Setting root symlinks..."
cd /sysroot
find ./nfsroot -maxdepth 1 -mindepth 1 -exec ln -s \{\} \;
cd /

# Prevent fsck from running.
rm -f /sysroot/.autofsck
cp -f /dev/null /sysroot/fastboot

echo "Handling special directories..."
rm -f /sysroot/initrd
mkdir /sysroot/initrd

rm -f /sysroot/tmp
mkdir /sysroot/tmp
chmod 1777 /sysroot/tmp

rm -f /sysroot/proc
mkdir /sysroot/proc

rm -f /sysroot/dev
mkdir /sysroot/dev
cp -ax /dev/* /sysroot/dev

rm -f /sysroot/mnt
mkdir /sysroot/mnt

rm -f /sysroot/etc
cp -a /sysroot/nfsroot/etc /sysroot
rm -f /sysroot/etc/mtab
cp /dev/null /sysroot/etc/mtab
rm -f /sysroot/etc/mtab~

rm -f /sysroot/sbin
mkdir /sysroot/sbin
cd /sysroot/sbin
find ../nfsroot/sbin -maxdepth 1 -mindepth 1 -exec ln -s \{\} \;
cd /

# This is necessary because bigleon uses a different filesystem for /var,
# and kernel nfs manages exports on per-filesystem basis.
#rm -f /sysroot/var
#mkdir /sysroot/var
#mount -n -t nfs -o ro,$NFS_OPTIONS $NFS_SERVER:/var /sysroot/var

# Likewise.
#rm -f /sysroot/usr
#mkdir /sysroot/usr
#mount -n -t nfs -o ro,$NFS_OPTIONS $NFS_SERVER:/usr /sysroot/usr

echo 0x100 > /proc/sys/kernel/real-root-dev

# do a "pivot_root" so as to change the place of /
echo "Changing the root directory to /sysroot..."
pivot_root /sysroot /sysroot/initrd

umount -n /initrd/proc
umount -n /initrd/sys

echo "Checking config.sh..."
if test -r /etc/umiboot/config.sh; then
  echo "Running config.sh..."
  /bin/sh /etc/umiboot/config.sh
fi

echo "Leaving from linuxrc..."