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|
#
# (c) 2007 Paul Sokolovsky
#
# If root is explicitly specified, skip interactive selection
if [ -z "$ROOT_DEVICE" ]; then
##############################
E="\033["
MOUNTLOC="tmp"
LOOP_IMG_MASK='*.img'
if ! (echo " " | read -n1 foo) >/dev/null 2>&1; then
echo "'read' command lacks -n switch support, aborting"
exit 1
fi
mkdir -p $MOUNTLOC
list=""
add_menu_item()
{
if [ -n "$list" ]; then
list="$list\n"
fi
list="$list$1"
}
show_menu() {
echo -e -n "${E}3;0H"
cnt=0
echo -e $list | \
while read l; do
if [ $cnt == $num ]; then
echo -e -n "${E}1m"
fi
echo -e "$cnt: $l${E}0m"
cnt=$((cnt + 1))
done
}
get_menu_selection()
{
cnt=0
sel=`echo -e $list | \
while read l; do
if [ $cnt == $num ]; then
echo $l
break
fi
cnt=$((cnt + 1))
done`
}
get_partition_type()
{
# fstype=`mount -f --guess-fstype /dev/$dev $MOUNTLOC`
fstype=`fstype </dev/$dev`
fstype=`expr "$fstype" : 'FSTYPE=\([A-Za-z0-9]*\).*'`
}
scan_for_loopimgs()
{
# Scan a device for loopback images, add to the list if found
mount /dev/$dev $MOUNTLOC
p=$PWD
cd $MOUNTLOC
for img in `ls -1 $LOOP_IMG_MASK 2>/dev/null`; do
add_menu_item "$dev/$img (loop img on vfat)"
done
cd $p
umount $MOUNTLOC
}
# Scan all available device/partitions
while read maj min nblk dev; do
if [ -z "$maj" -o "$maj" == "major" ]; then
continue;
fi
get_partition_type
if [ "$fstype" != "ext2" -a "$fstype" != "ext3" -a "$fstype" != "vfat" ]; then
# continue
true
fi
if [ "$fstype" == "vfat" ]; then
scan_for_loopimgs
continue
fi
add_menu_item "$dev ($fstype)"
done < /proc/partitions
add_menu_item "NFS (nfsroot=192.168.2.200:/nfs/image)"
total=`echo -e $list | wc -l`
num=0
# Draw UI
stty -echo
echo -e -n "${E}2J"
echo -e -n "${E}0;0H"
echo "Select boot image:"
# Main loop
show_menu
while read -n1 i; do
case "$i" in
"A")
num=$((num - 1))
if [ $num -lt 0 ]; then
num=$(($total - 1))
fi
;;
["B"-"Z"])
num=$((num + 1))
if [ $num -ge $total ]; then
num=0
fi
;;
"q")
exec sh
;;
"")
break
;;
esac
show_menu
# echo "*$esc$i"
done
stty echo
# Process results of user selection, prepare input arguments
# for boot modules
get_menu_selection
echo Selected: $sel
dev=`expr "$sel" : '\([^ /]*\)'`
path=`expr "$sel" : '[^/]*\([^ ]*\).*'`
if [ "$dev" == "NFS" ]; then
ROOT_DEVICE="/dev/nfs"
CMDLINE="$CMDLINE nfsroot=192.168.2.200:/nfs/image"
elif [ -n "$path" ]; then
ROOT_DEVICE="/dev/loop"
CMDLINE="looproot=/dev/$dev:$path"
else
ROOT_DEVICE="/dev/$dev"
fi
echo ROOT_DEVICE=$ROOT_DEVICE
echo CMDLINE=$CMDLINE
##############################
fi
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