#!/bin/sh
#----------------------------------------------------------------------------
# /init - boot script
#
# Creation:     29.03.2007 The Eisfair Team
# Last Update:  $Id$
#
# Copyright (c) 2000-2008 The Eisfair Team <team@eisfair.org>
#----------------------------------------------------------------------------
parse_opt() {
    case "$1" in 
        *\=*)
            echo ${1#*=}
            ;;
    esac
}

run_udev() {
    if $debugmessage
    then
        /sbin/udevadm trigger --verbose \
          --subsystem-nomatch=backlight \
          --subsystem-nomatch=video4linux $subsys_usb 
        mkdir -p /var/log
        udevadm monitor 2>&1 >/var/log/udev &
    else
        /sbin/udevadm trigger \
          --subsystem-nomatch=backlight \
          --subsystem-nomatch=video4linux $subsys_usb
    fi
    /sbin/udevadm settle
    # wait 30 second's for udev
    for i in 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
    do
        [ -e /sys/block/sda ] && break
        [ -e "/sys/block/ida*" ] && break
        echo -n "."
        sleep 1
    done
    echo ""
}

#----------------------------------------------------------------------------
# set default values
#----------------------------------------------------------------------------
PATH=/bin:/sbin/:/usr/bin:/usr/sbin:/usr/local/bin:.; export PATH
SHELL="/bin/sh"; export SHELL
NORMAL=$(echo -en "\\033[00m")
YELLOW=$(echo -en "\\033[33m")
GREEN=$(echo -en "\\033[32m")
installerMode=false
useGermanKeys=false
externalmodul=""
raidlevel=""
debugmessage=false
framebuffer=false
subsys_usb=""
#----------------------------------------------------------------------------
# mount devices, e.g. /proc
#----------------------------------------------------------------------------
# first mount:
mount -t sysfs -o nodev,noexec,nosuid none /sys 
mount -t proc -o nodev,noexec,nosuid none /proc 

if ! mount -t devtmpfs -o mode=0755 none /dev
then
	mount -t tmpfs -o mode=0755 none /dev
	mknod -m 0666 /dev/null    c 1 3
	mknod -m 0600 /dev/console c 5 1
    mknod -m 0660 /dev/mem     c 1 1
    mknod -m 0660 /dev/port    c 1 4
	mknod -m 0600 /dev/kmsg    c 1 11
	mknod -m 0660 /dev/loop0   b 7 0
	mknod -m 0600 /dev/tty     c 5 0
	mknod -m 0600 /dev/tty0    c 4 0
	mknod -m 0600 /dev/tty1    c 4 1
	mknod -m 0600 /dev/tty2    c 4 2
	mknod -m 0660 /dev/md0     b 9 0
	mknod -m 0660 /dev/md1     b 9 1
	mknod -m 0660 /dev/md2     b 9 2
	mknod -m 0660 /dev/md3     b 9 3
fi

mkdir -p /dev/pts
mount -t devpts -o noexec,nosuid,gid=5,mode=0620 none /dev/pts 

# Scan /proc/cmdline for any specified arguments
if [ -e /proc/cmdline ]
then
    for word in $(cat /proc/cmdline)
    do
        case $word in
            root\=*)    # root
                root=`parse_opt "${word}"`
            ;;
            raid\=*)    # raid
                raidlevel=`parse_opt "${word}"`
            ;;
            install)    # start install
                installerMode=true
                rm -f /lib/udev/rules.d/*md-raid.rules
                rm -f /lib/udev/rules.d/*dmsetup.rules
                rm -f /lib/udev/rules.d/*lvm2.rules
            ;;
            rescue)    # start rescue console
                installerMode=true
                debugmessage=true
                raidlevel="0"
                echo "" > /etc/rescue
            ;;
            kmapger)    # load german keymap
                useGermanKeys=true
            ;;
            doload\=*)  # insert aditional module without u/dev
                externalmodul=`parse_opt "${word}" | sed -e "s/,/ /g"`
            ;;
            debug)      # activate debug output
                debugmessage=true
            ;;
            vga\=*)     # start framebuffer graphic output
                framebuffer=true
            ;;
            console\=*) # show start message on console
                console=`parse_opt "${word}"`
            ;;
            nousb\=*)   # dont start udev usb trigger
                subsys_usb="--subsystem-nomatch=usb --subsystem-nomatch=usb_host"
        esac
    done
fi

if ! $debugmessage
then
    echo 0 > /proc/sys/kernel/printk
fi

# Create problematic directories
echo "" > /proc/sys/kernel/hotplug

#start udev
/sbin/udevd --daemon --resolve-names=never

# load modules if exists
/sbin/modprobe -qb ext3
/sbin/modprobe -qb dm-mod
/sbin/modprobe -qb loop

if $framebuffer
then
    /sbin/modprobe -qb fbcon
    /sbin/modprobe -qb vesafb
fi

if $installerMode
then
    while [ 1 ]
    do
        /bin/ash
    done </dev/tty2 >/dev/tty2 2>&1 &
fi

if [ -n "$externalmodul" ]
then
    for module in $externalmodul
    do
        echo "load ${module}"
        /sbin/modprobe -qb ${module}
    done
fi

if $installerMode
then
    if [ -z "$subsys_usb" ]
    then
        # Load USB modules
        for module in vfat sd_mod uhci-hcd ehci-hcd ohci-hcd usb-storage
        do
            modprobe -qb ${module}
        done
    fi
fi
exec >/dev/tty1
exec 2>/dev/tty1

# load german keymap
if [ "$useGermanKeys" = "true" ]
then
    loadkmap < /etc/kmap-gr.bin
fi

#----------------------------------------------------------------------------
# start udev, raid, lvm, usb
#----------------------------------------------------------------------------
echo -n "Detecting hardware: "
run_udev

if [ -n "$raidlevel" ]
then
    if [ "$raidlevel" = "0" ]
    then
        /sbin/modprobe -qb raid1
        /sbin/modprobe -qb raid0
    fi
    if [ "$raidlevel" = "1" ]
    then
        /sbin/modprobe -qb raid1
    fi
    if [ "$raidlevel" = "5" ]
    then
        /sbin/modprobe -qb raid1 
        /sbin/modprobe -qb raid456 
    fi
    #/sbin/modprobe raid10 > /dev/null 2>&1
    /sbin/mdadm --examine --scan > /etc/mdadm.conf
    /sbin/mdadm -As
fi

#----------------------------------------------------------------------------
# loading additional subsystem and filesystem driver
#----------------------------------------------------------------------------

if $installerMode
then
    medium="eisfair-installation-medium"
    mnt=/mnt
    mkdir -p /$mnt
#blkid -t TYPE=label -o device
    i=0
    while [ $i -le 10 ]
    do
        for x in /sys/block/*/device
        do
            x=${x%/device}; x=${x#/sys/block/}
            [ "$x" = "*" ] && continue
            # Compaq servers has /sys/block/ida!c0d0
            x=${x#ida!}
            x=/dev/$x
            for x in ${x}*
            do
                [ -e $x ] || continue
                fs=`blkid -s TYPE $x | cut -d = -f 2 | sed 's/"//g'`
                
                [ $i -gt 2 ] && echo "Testing device $x, type $fs ..."
                if mount -t $fs -o ro $x $mnt 2>/dev/null
                then
                    [ $i -gt 0 ] && echo "Successfully mounted $x ..."
                    if [ -f $mnt/$medium ]
                    then
                        if ! /bin/zcat /mnt/inst.tar.gz | /bin/tar xf -
                        then
                            echo "*** ERROR: /mnt/inst.tar.gz not found or RAMSIZE to small ***"
                            /bin/ash < /dev/tty1 > /dev/tty1
                            exit
                        fi
                        exec /bin/sh /linuxrc2
                    fi
                    umount $mnt
                fi
            done
        done
        sleep 2s
        : $(( i++ ))
    done
    echo "No eisfair media found, giving up. Debug shell:"
    /bin/ash < /dev/tty1 > /dev/tty1
else
    case "$root" in
        UUID*)
            uuid_root=`parse_opt "$root"`
            echo -n "Mounting root by UUID ($uuid_root) "
            mount_dev="/dev/disk/by-uuid/$uuid_root"
            ;;
        *)
            echo -n "Mounting $root "
            mount_dev="$root"
            ;;
    esac
    # second start of udev
    if [ ! -e "$mount_dev" ]
    then
        run_udev
        # Wait max 60 second's and ignore udev queue
        i=0
        while test ! -e "$mount_dev"
        do
            sleep 1;
            test $i -gt 59 && break
            echo -n "."
            : $(( i++ ))
        done
        echo ""
    else
        echo "..."
    fi
    if ! mount -n ${mount_dev} /mnt >/dev/null 
    then
        echo "List of detected partitions:"
        sfdisk -l
        echo "Debug shell"
        /bin/ash < /dev/tty1 > /dev/tty1
    fi
    # remove not used binaries
    killall udevd > /dev/null 2>&1
    rm -f  /sbin/udevadm
    rm -f  /sbin/udevd
    rm -rf /lib
    rm -f /bin/bar
    rm -f /sbin/blkid
    rm -f /sbin/dmsetup
    rm -f /sbin/sfdisk
    rm -f /sbin/e2fsck
    rm -f /sbin/lvm
    rm -f /sbin/mdadm
    rm -f /sbin/modprobe
    # Move virtual filesystems over to the real filesystem
    mount -n -o move /sys  /mnt/sys
    mount -n -o move /proc /mnt/proc
    mount -n -o move /dev  /mnt/dev
    echo
    echo "${YELLOW}Welcome to eisfair!${NORMAL}"
    echo
    echo "${GREEN}Please stand by, while the system is booting ...${NORMAL}"
    if [ -n "$console" ]
    then
        echo
        echo "(Switch to console 7 (Alt-F7) to see the boot messages)  "
    fi
    # new style of pivoting switch_root
    exec /sbin/switch_root /mnt /sbin/init
fi