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# - add ide-cd, sr_mod, cdrom (for SL5 cdrom support)
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# - add ide-cd, sr_mod, cdrom (for SL5 cdrom support)
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# - add aufs (unionfs replacement)
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# - add aufs (unionfs replacement)
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# - to allow LiveCD mounted over NFS (for diskless client)
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# - to allow LiveCD mounted over NFS (for diskless client)
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# - add functions get_dhcp_lease() and load_network_modules()
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# - add functions get_dhcp_lease() and load_network_modules()
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# - add ata_piix to modprobe_usb_sata_modules
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# - add ata_piix to modprobe_usb_sata_modules
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# - works with unionfs 2.x
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# - better detection of network card in case of diskless client
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#
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#
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# ===========================================================
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# ===========================================================
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# user interface functions
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# user interface functions
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# ===========================================================
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# ===========================================================
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     MODULE=${MODULE%%:};   # remove : at the end, a bug
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     MODULE=${MODULE%%:};   # remove : at the end, a bug
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     TMPMOD="/tmp/`basename $MODULE .gz`";
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     TMPMOD="/tmp/`basename $MODULE .gz`";
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     # if the module is not loaded already
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     # if the module is not loaded already
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     if [ "`cat $LSMOD 2>/dev/null | egrep \"^$TMPMOD\\\$\"`" = "" ]; then
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     if [ "`cat $LSMOD 2>/dev/null | egrep \"^$TMPMOD\\\$\"`" = "" ]; then
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        gunzip -c $MODULE 2>/dev/null >$TMPMOD
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        gunzip -c $MODULE 2>/dev/null >$TMPMOD
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        if [ "$?" -ne 0 ]; then cp $MODULE $TMPMOD; fi # can't gunzip? copy
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        if [ $? -ne 0 ]; then cp $MODULE $TMPMOD; fi # can't gunzip? copy
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        insmod $TMPMOD $2; err=$?
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        insmod $TMPMOD $2; err=$?
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        ### insmod $TMPMOD $2 >/dev/null 2>/dev/null; err=$?
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        ### insmod $TMPMOD $2 >/dev/null 2>/dev/null; err=$?
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        if [ "$err" -eq 0 ]; then echo $TMPMOD >>$LSMOD; fi # module log
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        if [ "$err" -eq 0 ]; then echo $TMPMOD >>$LSMOD; fi # module log
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        rm $TMPMOD
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        rm $TMPMOD
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     fi
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     fi
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# $1 = union absolute path (starting with /)
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# $1 = union absolute path (starting with /)
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# $2 = path to data directory
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# $2 = path to data directory
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#
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#
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union_insert_dir()
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union_insert_dir()
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{
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{
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   which unionctl >/dev/null 2>&1
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   if [ $? -eq 0 ]; then
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       # unionfs 1.x or aufs
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   unionctl "$1" --add --after 0 --mode ro "$2"
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       unionctl "$1" --add --after 0 --mode ro "$2"
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   else
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       # unionfs 2.x
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       mount -t unionfs -o remount,add=:${2}=ro none "$1"
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   fi
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}
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}
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# List all modules in all directories (base, modules, optional)
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# List all modules in all directories (base, modules, optional)
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# and filter out unneeded optional modules (not specified by load= kernel parameter)
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# and filter out unneeded optional modules (not specified by load= kernel parameter)
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# $1 = root directory of mounted DATAdir
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# $1 = root directory of mounted DATAdir
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# $2 = target directory in RAM
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# $2 = target directory in RAM
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#
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#
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copy_to_ram()
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copy_to_ram()
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{
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{
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   cp -R $1/* $2
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   cp -R $1/* $2
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   if [ "$?" -ne 0 ]; then fatal "can't copy to RAM, not enough memory?"; fi
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   if [ $? -ne 0 ]; then fatal "can't copy to RAM, not enough memory?"; fi
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}
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}
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# Copy content of "rootcopy" directory on the CD to $2 (union, usually)
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# Copy content of "rootcopy" directory on the CD to $2 (union, usually)
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# $1 = source
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# $1 = source
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# $2 = destination
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# $2 = destination
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# ===========================================================
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# ===========================================================
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# load network modules, if NFSROOT is set
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# load network modules, if NFSROOT is set
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# Urs Beyerle, PSI
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# Urs Beyerle, PSI
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#
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#
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load_network_modules()
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load_network_modules()
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{
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{
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    # mii maybe need by NIC
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    # mii maybe need by NIC
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    echolog "load module mii"
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    echolog "load module mii"
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    modprobe_module mii
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    modprobe_module mii
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    FOUND_NIC=""
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    # 1. load network driver defined by kernel parameter nic
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    NIC="`cmdline_value nic`"
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    if [ -n "$NIC" ]; then
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	echolog "load module $NIC"
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	modprobe_module nic
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    fi
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    # detecting network card
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    # 2. detecting network card from pcitable list
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    PCITABLE=/bin/pcitable
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    PCITABLE=/bin/pcitable
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    NICS=`lspci -n | awk '/Class 0200/ {print $4}' | tr ':' ' ' \
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    NICS=`lspci -n | awk '/Class 0200/ {print $4}' | tr ':' ' ' \
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	| while read x y ; do grep "0x$x.*0x$y" $PCITABLE \
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	| while read x y ; do grep "0x$x.*0x$y" $PCITABLE \
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	| awk '$3 !~ /"unknown"/ {print $3}' | tr -d '"' ; done`
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	| awk '$3 !~ /"unknown"/ {print $3}' | tr -d '"' ; done`
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    echolog "Found network card(s): $NICS"
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    if [ -n "$NICS" ]; then
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    if [ -n "$NICS" ]; then
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	echo $NICS | while read nic ; do
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	echolog "found network card(s): $NICS"
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	for nic in $NICS; do
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	    echo "Loading module $nic"
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	    echolog "load module $nic"
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	    modprobe_module $nic
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	    modprobe_module $nic
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	    FOUND_NIC="yes"
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	done
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	done
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    fi
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    # 3. probe for more network card drivers, if no ethX devices found
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    for iface in eth0 eth1 eth2 eth3; do
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	ifconfig $iface > /dev/null 2>&1
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	if [ $? -eq 0 ]; then  FOUND_NIC="yes"; break; fi
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    else
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    done
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    if [ -z $FOUND_NIC ]; then
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	KERNEL="`uname -r`"
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	NETDRIVERS="`cat /lib/modules/$KERNEL/netdrivers`"
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	for driver in $NETDRIVERS; do
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	    modprobe_module $driver
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	    ifconfig $iface > /dev/null 2>&1
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	    if [ $? -eq 0 ]; then
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		echolog "load $driver"
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		FOUND_NIC="yes"
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		break
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	    fi
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	    rmmod $driver
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	done
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    fi
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    # 4. ask the user for a network driver
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    if [ -z $FOUND_NIC ]; then
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	echo "ERROR: No network card detected!"
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	echo "ERROR: No network card detected!"
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	echo "Type in your network card driver (e.g. tg3, e1000). "
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	echo "Type in your network card driver (e.g. tg3, e1000). "
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	echo "Or ask your system administrator for help."
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	echo "Or ask your system administrator for help."
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	echo -n "Network card driver: "
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	echo -n "Network card driver: "
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	read nic
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	read nic
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	echo "Loading module $nic"
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	echo "Load module $nic"
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	modprobe_module $nic
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	modprobe_module $nic
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    fi
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    fi
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}
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}
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482 
# get DHCP lease
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# get DHCP lease