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|
#!/bin/sh
ROOT_MOUNT="/rootfs/"
ROOT_IMAGE=rootfs.img
MOUNT="/bin/mount"
UMOUNT="/bin/umount"
early_setup() {
mkdir /proc
mkdir /sys
mount -t proc proc /proc
mount -t sysfs sysfs /sys
udevd --daemon
}
read_args() {
[ -z "$CMDLINE" ] && CMDLINE=`cat /proc/cmdline`
for arg in $CMDLINE; do
optarg=`expr "x$arg" : 'x[^=]*=\(.*\)'`
case $arg in
root=*)
ROOT_DEVICE=$optarg ;;
rootfstype=*)
ROOT_FSTYPE=$optarg ;;
rootdelay=*)
rootdelay=$optarg ;;
LABEL=*)
label=$optarg ;;
video=*)
video_mode=$arg ;;
vga=*)
vga_mode=$arg ;;
esac
done
}
boot_live_root() {
killall udevd
cd $ROOT_MOUNT
exec switch_root -c /dev/console $ROOT_MOUNT /sbin/init
}
fatal() {
echo $1 >$CONSOLE
echo >$CONSOLE
exec sh
}
early_setup
[ -z "$CONSOLE" ] && CONSOLE="/dev/console"
read_args
echo "Waiting for removable media..."
while true
do
for i in `ls /media 2>/dev/null`; do
if [ -f /media/$i/$ROOT_IMAGE ] ; then
found="yes"
fi
done
if [ "$found" = "yes" ]; then
break;
fi
sleep 1
done
case $label in
boot)
mkdir $ROOT_MOUNT
mknod /dev/loop0 b 7 0
if ! $MOUNT -o rw,loop,noatime,nodiratime /media/$i/$ROOT_IMAGE $ROOT_MOUNT ; then
fatal "Couldnt mount rootfs image"
else
boot_live_root
fi
;;
install)
if [ -f /media/$i/$ROOT_IMAGE ] ; then
./install.sh $i $ROOT_IMAGE $video_mode $vga_mode
else
fatal "Couldnt find install script"
fi
# If we're getting here, we failed...
fatal "Installation image failed"
;;
esac
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