#! /bin/sh
#
# linuxrc.s390
#
# Copyright (C) 2000, 2001, 2002, 2003, 2004  Red Hat, Inc.
# All rights reserved.
#
# 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, see <http://www.gnu.org/licenses/>.
#
# Author(s): Bernhard Rosenkraenzer <bero@redhat.com>
#            Oliver Paukstadt <opaukstadt@millenux.com>
#            Karsten Hopp <karsten@redhat.de>
#            Florian La Roche <laroche@redhat.com>
#            Nils Philippsen <nils@redhat.de>
#            Helge Deller <hdeller@redhat.de>
#            David Sainty <dsainty@redhat.com>
#

VERSION=1.1

export TEXTDOMAIN=s390installer
export TEXTDOMAINDIR=/usr/lib/locale

# check IP address format
# param: IP string
# return: 0 (valid IP) or 1 (invalid IP)
checkip()
{
    ip=$1
    echo $ip | awk -F'.' '{ if (NF != 4) { exit 1 } i=1; while (i<=NF) { if ($i>255 || $i<0) { exit 1 }; i=i+1; } exit 0 }'
    return $?
}

doshutdown()
{
	 exec /sbin/shutdown
	 exit 0
}

doreboot()
{
    # find out the location of /boot and use it to re-ipl
    boot=`cat /proc/mounts | grep " /mnt/sysimage/boot " | awk -F" " '{print $1}'`
    if [ -z $boot ]; then
        # use root if /boot not used
        boot=`cat /proc/mounts | grep " /mnt/sysimage " | awk -F" " '{print $1}'`
    fi
    # lookup dasd disk
    echo $boot | grep "dasd" > /dev/null
    if [ $? -eq 0 ]; then
        type="ccw"
        boot=`basename $boot`
        # strip partition number from dasd device
        boot=$(echo ${boot%[0-9]})
        id=`basename $(readlink /sys/block/$boot/device)`
        echo $type > /sys/firmware/reipl/reipl_type
        echo $id > /sys/firmware/reipl/$type/device
    else
        # scsi re-ipl only supported on newer machines
        doshutdown
        exit 0
    fi

    echo $"about to exec shutdown -r"
    exec /sbin/shutdown -r
    exit 0
}

sysecho () {
	file=$1
	shift
	i=1
	while [ $i -le 10 ] ; do
      if [ ! -f $file ]; then
			sleep 1
			i=$((i+1))
		else 
			break
		fi
	done
	[ -f $file ] && echo $* > $file
}

# jump through some hoops to find out the LCS interface name
getlcsifname() {
   local dirs driver readport ifname
   ifname=""
   dirs=`/bin/ls -d /sys/class/net/eth* /sys/class/net/tr* 2>/dev/null`
   for i in $dirs; do
      driver=`readlink $i/driver`
      driver=`basename $driver`
      if [ "$driver" == "lcs" ]; then
         readport=`readlink $i/device`
         readport=`basename $readport`
         if [ "$readport" == "$1" ]; then
            ifname=`basename $i`
            break
         fi
      fi
   done
   if [ -n "$ifname" ]; then
      DEVICE=$ifname
   else
      echo "Could not detect LCS interface, aborting..."
      exit
   fi
}


startinetd()
{
	echo
	echo $"Starting sshd to allow login over the network."
   echo $"Welcome to the anaconda install environment $VERSION for $S390ARCH" > /etc/issue.net
   echo $"Welcome to the anaconda install environment $VERSION for $S390ARCH" > /etc/motd
   echo >> /etc/motd

	/sbin/sshd
	if [ -z "$RUNKS" ]; then
	  echo 
	  echo $"Connect now to $IPADDR to start the installation."
	  read
  	  while : ; do
			/bin/sh --login
			[ $? = 0 ] || break
	  done
	fi
}

# read file from CMS and write it to /tmp
readcmsfile() # $1=dasdport $2=filename
{
   local dev
   if [ $# -ne 2 ]; then return; fi
   mknod /dev/dasda b 94 0
   insmod dasd_mod$LO dasd=$1
   insmod dasd_eckd_mod$LO
   cmsfscat -d /dev/dasda -a $2 > /tmp/$2
   if [ ${#1} == 3 ]; then 
      dev="0.0.0${1}"
   elif [ ${#1} == 4 ]; then
      dev="0.0.${1}"
   fi
   sysecho /sys/bus/ccw/drivers/dasd-eckd/$dev/online 0
   rmmod dasd_eckd_mod
   rmmod dasd_mod
}

setupdevice()
{
   if [ -z "$SUBCHANNELS" -o -z "$NETTYPE" ]; then
      echo $"SUBCHANNELS or NETTYPE empty, cannot continue."
      exit 1
   fi
   SYSDIR=${SUBCHANNELS//,*/}   # get first subchannel. This is where the device can be brought online
   sysecho /sys/bus/ccwgroup/drivers/${NETTYPE}/group "$SUBCHANNELS"
   if [ -n "$PORTNAME" ]; then
		if [ "$NETTYPE" = "lcs" ]; then
			sysecho /sys/bus/ccwgroup/drivers/${NETTYPE}/${SYSDIR}/portno "$PORTNAME"
		else
			sysecho /sys/bus/ccwgroup/drivers/${NETTYPE}/${SYSDIR}/portname "$PORTNAME"
		fi
	fi
   if [ -n "$CTCPROT" -a "$NETTYPE" = "ctc" ]; then
      sysecho /sys/bus/ccwgroup/drivers/ctc/${SYSDIR}/protocol "$CTCPROT"
   fi
   if [ -n "$LAYER2" -a "$NETTYPE" = "qeth" ]; then
      sysecho /sys/bus/ccwgroup/drivers/qeth/${SYSDIR}/layer2 "$LAYER2"
   fi
   sysecho /sys/bus/ccwgroup/drivers/${NETTYPE}/${SYSDIR}/online 1
}

createDevices()
{
    awk '{ printf("mknod /dev/%s %s %s %s\n", $1, $2, $3, $4);
	   printf("chmod %s /dev/%s\n", $5, $1);
	   printf("chown %s /dev/%s\n", $6, $1); 
	 }' <<EOF | sh
	console c 5 1 600 root:root
	null c 1 3 666 root:root
	zero c 1 5 666 root:root
	mem c 1 1 600 root:root
	ptmx c 5 2 666 root:root
	tty  c 5 0 666 root:root
	tty0 c 4 0 600 root:tty
	tty1 c 4 1 600 root:tty
	random c 1 8 644 root:root
	urandom c 1 9 644 root:root
   rtc c 10 135 644 root:root
EOF
	for i in 2 3 4 5 6 7 8 9 ; do
	    ln -s console /dev/tty$i
	done
	mkdir /dev/pts
}

S390ARCH=`uname -m`
if [ "$S390ARCH" = "s390" ]; then
   export S390ARCH="S/390"
else
   export S390ARCH="zSeries"
fi

echo $"Starting the $S390ARCH initrd to configure networking. Version is $VERSION"


# set up env vars as we do in init.c
if [ `uname -m` = "s390x" ]; then
	 LD_LIBRARY_PATH=/lib64:/usr/lib64:/usr/X11R6/lib64:/usr/kerberos/lib64:/lib:/usr/lib:/usr/X11R6/lib:/usr/kerberos/lib
else
	 LD_LIBRARY_PATH=/lib:/usr/lib:/usr/X11R6/lib:/usr/kerberos/lib
fi
export LD_LIBRARY_PATH

PATH="$PATH:/usr/bin:/bin:/sbin:/usr/sbin:/mnt/sysimage/bin:/mnt/sysimage/usr/bin:/mnt/sysimage/usr/sbin:/mnt/sysimage/sbin:/mnt/sysimage/usr/X11R6/bin"
export PATH
HOME=/
export HOME
PYTHONPATH=/tmp/updates
export PYTHONPATH

mount -t proc none /proc
mount -t tmpfs none /dev
createDevices
mount -t devpts /dev/pts /dev/pts
mount -t sysfs none /sys
# remount root fs rw
mount /dev/root /  -o remount,rw

# limit output on x3270 console (well, not really -- need debugging now)
echo "8 4 1 1" > /proc/sys/kernel/printk

# make /tmp/ramfs
mount -t ramfs none /tmp

ifconfig lo 127.0.0.1 netmask 255.0.0.0
route add -host 127.0.0.1 dev lo 2>/dev/null

LO=""

[ -L /sbin/insmod ] && LO=".ko"

if [ -n "$CMSDASD" -a -n "$CMSCONFFILE" ]; then
   readcmsfile $CMSDASD $CMSCONFFILE
   source /tmp/$CMSCONFFILE #2>/dev/null
fi

# Parse configuration
# Check for missing parameters, prompt for them if necessary
while [ -z "$NETTYPE" ]; do
   echo $"Which kind of network device do you intend to use"
   echo $"  (e.g. ctc, iucv, qeth, lcs)."
   echo $"Enter 'qeth' for OSA-Express Fast Ethernet, Gigabit Ethernet"
   echo $"  (including 1000Base-T), High Speed Token Ring, and ATM "
   echo $"  (running Ethernet LAN emulation) features in QDIO mode."
   echo $"Enter 'lcs' for OSA­2 Ethernet/Token Ring, OSA-Express Fast Ethernet in"
   echo $"  non-QDIO mode, OSA-Express High Speed Token Ring in non-QDIO mode and"
   echo $"  Gigabit Ethernet in non-QDIO mode."
	read NETTYPE
done
if [ "$NETTYPE" != "iucv" ]; then   # iucv is the only interface without ccw config
   if [ -n "$CHANDEV" ]; then
		echo
		echo $"The CHANDEV variable isn't used anymore, please update your "
		echo $".parm or the .conf file"
		echo
	fi
   while [ -z "$SUBCHANNELS" ]; do
		echo $"Enter the bus ID and the device number of your CCW devices."
		echo $"CTC/ESCON and LCS need two subchannels:"
		echo $"(e.g. \"0.0.0600,0.0.0601\" will configure the CTC or ESCON interface"
		echo $"with the subchannels 0x600 and 0x601)"
		echo $"QETH needs three subchannels p.e. 0.0.0300,0.0.0301,0.0.0302"
		read SUBCHANNELS
   done
	SUBCHANNELS=`echo $SUBCHANNELS | /sbin/busybox tr ABCDEF abcdef`
	if [ "$NETTYPE" = "qeth" ]; then
		if [ -z "$PORTNAME" ]; then
			echo $"Portname of the OSA-Express feature in QDIO mode and z/VM Guest LAN"
			echo $"This parameter is optional with z/VM 4.4.0 or z/VM 4.3.0 with"
			echo $"APARs VM63308 and PQ73878"
			echo $"Press enter if you don't want to enter a portname"
			read PORTNAME
		fi
		if [ -z "$LAYER2" ]; then
			echo $"Enter the mode of operation for the OSA device"
			echo $"0 for layer 3 mode (default)"
			echo $"1 for layer 2 mode"
			read LAYER2
		fi
   fi
fi
      
while [ -z "$HOSTNAME" -o "$HOSTNAME" = "(none)" ]; do
	echo $"Enter the FQDN of your new Linux guest (e.g. s390.redhat.com):"
	read HOSTNAME
done
while [ -z "$IPADDR" ]; do
  echo $"Enter a valid IP address of your new Linux guest:"
  read IPADDR
  checkip $IPADDR
  ret=$?
  if [ $ret -eq 1 ]; then
    echo -n "Invalid IP address format. "
    unset IPADDR
  fi
done
while [ -z "$NETWORK" ]; do
  echo $"Enter a valid network address of the new Linux guest:"
  read NETWORK
  checkip $NETWORK
  ret=$?
  if [ $ret -eq 1 ]; then
    echo -n "Invalid network address format. "
    unset NETWORK
  fi
done
if [ "$NETTYPE" = "qeth" ] || [ "$NETTYPE" = "lcs" ]; then
	 while [ -z "$NETMASK" ]; do
		  echo $"Enter the netmask for the new Linux guest (e.g. 255.255.255.0):"
		  read NETMASK
		  checkip $NETMASK
		  ret=$?
		  if [ $ret -eq 1 ]; then
		    echo -n "Invalid netmask format. "
		    unset NETMASK
		  fi
	 done
	 while [ -z "$BROADCAST" ]; do
		  echo $"Enter the broadcast address for the new Linux guest:"
		  read BROADCAST
		  checkip $BROADCAST
		  ret=$?
		  if [ $ret -eq 1 ]; then
		    echo -n "Invalid broadcast address format. "
		    unset BROADCAST
		  fi
	 done
	 while [ -z "$GATEWAY" ]; do
		  echo $"Enter your default gateway:"
		  read GATEWAY
		  checkip $GATEWAY
		  ret=$?
		  if [ $ret -eq 1 ]; then
		    echo -n "Invalid gateway address format. "
		    unset GATEWAY
		  fi
	 done
    if [ ":$NETTYPE" = ":lcs" ]; then
        if [ -n "$RUNKS" -a -z "$PORTNAME" ]; then
           PORTNAME=0
        fi
        while [ -z "$PORTNAME" ]; do
           echo $"Enter the relative port number of your LCS device"
           echo $"(required for OSA-Express ATM cards only):"
           read PORTNAME
        done
    fi
else  # ctc0, iucv0
    if [ -z "$NETMASK" ]; then
        # If the user did not supply netmask, we add the right one.
        # Netmask MUST be present, or pumpSetupInterface() blows routes.
        NETMASK="255.255.255.255"
    fi
	 while [ -z "$GATEWAY" ]; do
		  echo $"Enter the IP of your CTC / ESCON / IUCV point-to-point partner:"
		  read GATEWAY
	 done

	 if [ "$NETTYPE" = "ctc" ]; then
        if [ -z "$MTU" ]; then
		      MTU="1500"
        fi
        if [ -z "$RUNKS" ]; then
           if [ -n "$CTCPROT" ]; then
              validprot=1
           else
              validprot=0
           fi
           while [ "$validprot" = "0" ]; do
              echo $"Select which protocol should be used for the CTC interface"
              echo $"0 for compatibility with p.e. VM TCP service machine (default)"
              echo $"1 for enhanced package checking for Linux peers"
              echo $"3 for compatibility with OS/390 or z/OS peers"
              read CTCPROT
              case "x$CTCPROT" in
              x|x0)
                 validprot=1
                 unset CTCPROT
                 ;;
              x1|x3)
                 validprot=1
                 ;;
              x2)
                 echo $"CTC tty's are not usable for this installation"
                 ;;
              *)
                 echo $"Invalid selection"
                 ;;
              esac
           done
	    fi
	 fi
	 if [ ":$NETTYPE" = ":iucv" ]; then
		  while [ -z "$PEERID" ]; do
			   echo $"Enter the peer id of the VM guest you want to"
				echo $"connect to (in capital letters)."
			   read PEERID
		  done
	 fi
fi
# don't ask for MTU, but use it if it has been set in the .parm file
# don't overwrite MMTU if it has been set for CTC
if [ -n "$MTU" -a -z "$MMTU" ]; then
	 MMTU="mtu $MTU"
fi

# configure network-interface
if [ ":$NETTYPE" = ":ctc" ]; then
   insmod ccwgroup$LO
	insmod cu3088$LO
	insmod fsm$LO
	insmod ctc$LO
   setupdevice
   DEVICE=${NETTYPE}0
	ifconfig $DEVICE $IPADDR $MMTU pointopoint $GATEWAY
   echo "alias $DEVICE ctc" >> /tmp/modprobe.conf
elif [ ":$NETTYPE" = ":iucv" ]; then
	insmod fsm$LO
	insmod iucv$LO
	insmod netiucv$LO
	sysecho /sys/bus/iucv/drivers/netiucv/connection $PEERID
   DEVICE=${NETTYPE}0
	ifconfig $DEVICE $IPADDR $MMTU pointopoint $GATEWAY
   echo "alias $DEVICE netiucv" >> /tmp/modprobe.conf
elif [ "$NETTYPE" = "lcs" ]; then
   insmod ccwgroup$LO
	insmod cu3088$LO
	insmod lcs$LO
   setupdevice
# KH FIXME: Workaround for missing sysfs interface
#   DEVICE=`cat /sys/devices/lcs/${SUBCHANNELS//,*/}/if_name`
   getlcsifname ${SUBCHANNELS//,*/}
	ifconfig $DEVICE $IPADDR $MMTU netmask $NETMASK broadcast $BROADCAST
	route add -net $NETWORK netmask $NETMASK dev $DEVICE 2>/dev/null
   echo "alias $DEVICE lcs" >> /tmp/modprobe.conf
elif [ "$NETTYPE" = "qeth" ]; then
   insmod ccwgroup$LO
	insmod qdio$LO
	insmod ipv6$LO
	insmod qeth$LO
   setupdevice
   DEVICE=`cat /sys/devices/qeth/${SUBCHANNELS//,*/}/if_name`
	ifconfig $DEVICE $IPADDR $MMTU netmask $NETMASK broadcast $BROADCAST
	route add -net $NETWORK netmask $NETMASK dev $DEVICE 2>/dev/null
	echo "alias $DEVICE qeth" >> /tmp/modprobe.conf
else
   echo $"Unknown network device, aborting installation"
   exit 1
fi

route add default gw $GATEWAY dev $DEVICE 2>/dev/null

if [ -z "$DNS" ]; then
	echo $"Enter your DNS server(s), separated by colons (:):"
	read DNS
fi
if [ -z "$DNS" ]; then
	echo $"You might encounter problems without a nameserver, especially"
	echo $"with FTP installs"
fi

if [ -n "$DNS" -a -z "$SEARCHDNS" ]; then
	echo $"Enter your DNS search domain(s) (if any), separated by colons (:):"
	read SEARCHDNS
fi

[ -n "$HOSTNAME" ] && hostname $HOSTNAME

# show interfaces and routing table
ifconfig -a
route -n

#echo $"Starting portmap."
#portmap

# convert to space-separated lists
if [ -n "$SEARCHDNS" ]; then
	SEARCHDNS=`echo $SEARCHDNS |sed -e 's/:/ /g'`
	for i in "$SEARCHDNS"; do echo "search $i"; done >> /etc/resolv.conf
fi
if [ -n "$DNS" ]; then
	RESOLVDNS=`echo $DNS |sed -e 's/:/ /g'`
	for i in $RESOLVDNS; do echo "nameserver $i"; done >> /etc/resolv.conf
fi

# make sure we have an /etc/hosts file (required for telnetd)
echo -e "127.0.0.1\tlocalhost.localdomain localhost" > /etc/hosts
echo -e "::1\t\tlocalhost6.localdomain6 localhost6" >> /etc/hosts
if [ ! -z "$HOSTNAME" -a ! -z "$IPADDR" ]; then
	echo -e "$IPADDR\t$HOSTNAME `echo $HOSTNAME | cut -d '.' -f 1`" >> /etc/hosts
fi

if [ -z "$DASD" ]; then
   echo
   echo $"Enter DASD range (e.g. 200-203   or  200,201,202,203)"
   echo $"Press <Enter> for autoprobing (not recommended):"
   echo
   read DASD
fi
if [ -n "$DASD" ]; then
       echo "DASD=$DASD" > /tmp/dasd_ports
fi

for i in ${!FCP_*}; do
   echo "${!i}" >> /tmp/fcpconfig
done

grep -q ext3 /proc/filesystems
if [ "$?" != "0" ]; then
  insmod jbd$LO
  insmod ext3$LO
fi

# transfer options into install environment
cat > /tmp/install.cfg << EOF
LANG="$LANG"
S390ARCH="$S390ARCH"
TEXTDOMAIN="$TEXTDOMAIN"
TEXTDOMAINDIR="$TEXTDOMAINDIR"
PORTNAME="$PORTNAME"
HOSTNAME="$HOSTNAME"
DEVICE="$DEVICE"
NETTYPE="$NETTYPE"
IPADDR="$IPADDR"
GATEWAY="$GATEWAY"
MTU="$MTU"
NETWORK="$NETWORK"
NETMASK="$NETMASK"
BROADCAST="$BROADCAST"
DNS="`echo $DNS | cut -d ':' -f 1`"
SEARCHDNS="$SEARCHDNS"
PEERID="$PEERID"
SUBCHANNELS="$SUBCHANNELS"
ONBOOT="yes"
CTCPROT="$CTCPROT"
export LANG PORTNAME S390ARCH TEXTDOMAIN TEXTDOMAINDIR
export HOSTNAME DEVICE NETTYPE IPADDR GATEWAY MTU
export NETWORK NETMASK BROADCAST DNS SEARCHDNS
export PEERID ONBOOT SUBCHANNELS CTCPROT
EOF
# immediately read it in again to export these into the shell below
. /tmp/install.cfg
cat /tmp/install.cfg >> /etc/profile
cat > /tmp/netinfo << EOF
DEVICE=$DEVICE
ONBOOT=yes
BOOTPROTO=static
IPADDR=$IPADDR
NETMASK=$NETMASK
GATEWAY=$GATEWAY
BROADCAST=$BROADCAST
HOSTNAME=$HOSTNAME
MTU=$MTU
SUBCHANNELS=$SUBCHANNELS
EOF
[ "$DNS" != "" ] && echo "DNS=`echo $DNS | cut -d ':' -f 1`" >> /tmp/netinfo
[ "$NETTYPE" != "" ] && echo "NETTYPE=$NETTYPE" >> /tmp/netinfo
[ "$PEERID" != "" ] && echo "PEERID=$PEERID" >> /tmp/netinfo
[ "$PORTNAME" != "" ] && echo "PORTNAME=$PORTNAME" >> /tmp/netinfo
[ "$CTCPROT" != "" ] && echo "CTCPROT=$CTCPROT" >> /tmp/netinfo

# so that the vars get propagated into the sshd shells
mkdir /.ssh
cat >> /.ssh/environment <<EOF
LD_LIBRARY_PATH=$LD_LIBRARY_PATH
PATH=$PATH
HOME=$HOME
PYTHONPATH=$PYTHONPATH
EOF

cat >> /etc/profile <<EOF
LD_LIBRARY_PATH=$LD_LIBRARY_PATH
PATH=$PATH
HOME=$HOME
PYTHONPATH=$PYTHONPATH
export LD_LIBRARY_PATH PATH HOME PYTHONPATH
EOF

if [ -n "$DISPLAY" ]; then
	 echo "export DISPLAY=$DISPLAY" >> /etc/profile
fi

# I'm tired of typing this out...
echo "loader" >> /.bash_history

echo -n $$ > /var/run/init.pid
# shutdown (halt) on SIGUSR1
trap doshutdown SIGUSR1
# reboot on SIGUSR2
trap doreboot SIGUSR2

startinetd

if [ -n "$RUNKS" ]; then
	 /sbin/loader
fi

doreboot

# ;;; Local Variables: ***
# ;;; mode: sh ***
# ;;; tab-width:3 ***
# ;;; end: ***
# vim:ts=3:sw=3