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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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# - works with unionfs 2.x
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# - better detection of network card in case of diskless client
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# - better detection of network card in case of diskless client
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# - add sg, sata_nv module
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# - add sg, sata_nv module
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# - to allow LiveCD mounted over CIFS (for diskless client)
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# - to allow LiveCD mounted over CIFS (for diskless client)
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# - add function find_changes
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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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find_live_data_dir()
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find_live_data_dir()
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{
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{
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   if [ "$NFSROOT" != "" ]; then
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   if [ "$NFSROOT" != "" ]; then
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      DIR="/$1/nfs"
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      DIR="/$1/nfs"
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      mkdir -p $DIR
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      mkdir -p $DIR
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      # disable kernel warnings
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      PRINTK=`cat /proc/sys/kernel/printk`
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      echo "0" >/proc/sys/kernel/printk
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      # try to mount nfs dir
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      # try to mount nfs dir
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      mount -t nfs -o $NFSOPT $NFSROOT $DIR
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      mount -t nfs -o $NFSOPT $NFSROOT $DIR
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      # enable kernel warnings
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      echo "$PRINTK" >/proc/sys/kernel/printk
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   fi
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   fi
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   if [ "$CIFSROOT" != "" ]; then
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   if [ "$CIFSROOT" != "" ]; then
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      DIR="/$1/cifs"
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      DIR="/$1/cifs"
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      mkdir -p $DIR
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      mkdir -p $DIR
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      # disable kernel warnings
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      PRINTK=`cat /proc/sys/kernel/printk`
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      echo "0" >/proc/sys/kernel/printk
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      # try to mount cifs dir
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      # try to mount cifs dir
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      mount -t cifs $CIFSROOT $DIR -o ro,$CIFSOPTS
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      mount -t cifs $CIFSROOT $DIR -o ro,$CIFSOPTS
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      # enable kernel warnings
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      echo "$PRINTK" >/proc/sys/kernel/printk
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   fi
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   fi
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   PRINTK=`cat /proc/sys/kernel/printk`
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   echo "0" >/proc/sys/kernel/printk
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   if [ "$DIR" = "" ]; then
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   if [ "$DIR" = "" ]; then
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       list_block_devices | while read DEVICE; do
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       list_block_devices | while read DEVICE; do
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	   DIR="/$1/`basename $DEVICE`"
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	   DIR="/$1/`basename $DEVICE`"
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	   mount_device $DEVICE $DIR
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	   mount_device $DEVICE $DIR
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	   if [ $? -ne 0 ]; then continue; fi
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	   if [ $? -ne 0 ]; then continue; fi
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       FOUND=`ls -A1d $DIR/livecd.sgn $DIR/*/livecd.sgn 2>/dev/null | head -n 1`
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       FOUND=`ls -A1d $DIR/livecd.sgn $DIR/*/livecd.sgn 2>/dev/null | head -n 1`
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       if [ "$FOUND" != "" ]; then
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       if [ "$FOUND" != "" ]; then
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	   dirname "$FOUND"
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	   dirname "$FOUND"
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       fi
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       fi
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   fi
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   fi
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   echo "$PRINTK" >/proc/sys/kernel/printk
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}
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}
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# ===========================================================
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# ===========================================================
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# hardware preparation functions
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# hardware preparation functions
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# ===========================================================
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# ===========================================================
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   # all the rest will be done by runlast or by fstab-sync
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   # all the rest will be done by runlast or by fstab-sync
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   # search for SWAP done later in /etc/rc.sysinit
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   # search for SWAP done later in /etc/rc.sysinit
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}
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}
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# find partition and/or folder taht stores the changes
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# return false, if changes not set or changes folder/partition not found
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find_changes()
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{
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    CHANGESDEV="`echo "$CHANGESVAL" | egrep -o "^/dev/[^/]+"`"
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    CHANGESFOLDER="`echo "$CHANGESVAL" | sed -r 's:^/dev/[^/]+(.*):\1:'`"
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    # (re-)define CHANGES if CHANGESFOLDER is set
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    if [ "$CHANGESFOLDER" != "" ]; then CHANGES=$MEMORY/$CHANGESFOLDER; fi
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    # we may need usb sata support
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    modprobe_usb_sata_modules
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    # device defined?
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    if [ "$CHANGESDEV" != "" ]; then
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	mount_device $CHANGESDEV $MEMORY
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	return
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    fi
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- 
 
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    # if no device is specified, search all devices for folder CHANGESFOLDER
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    list_block_devices | while read DEVICE; do
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	mount_device $DEVICE $MEMORY
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	if [ $? -ne 0 ]; then continue; fi
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	FOUND_FOLDER=`ls -A1d $MEMORY/$CHANGESFOLDER | head -n 1`
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	if [ "$FOUND_FOLDER" = "" ]; then
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	    umount $MEMORY 2>/dev/null
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	else
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	    echo "found folder $CHANGESFOLDER on $DEVICE"
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	    return
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	fi
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    done
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}
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# ===========================================================
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# ===========================================================
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# functions used for LiveCD on NFS
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# functions used for LiveCD on NFS
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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