#!/bin/bash
HOME=/home/virtual
GROUP=uml
USER=$1
DISTRO=$2

[ -f /home/uml/${DISTRO}.img ] || (echo "/home/uml/${DISTRO}.img neexistuje; exit 1")

PORADI=`ls ${HOME} | wc -l`

groupadd ${GROUP} 2> /dev/null

[ -d ${HOME} ] \
	|| { mkdir ${HOME}; chmod 750 ${HOME}; chgrp ${GROUP} ${HOME}; }
	
useradd -g ${GROUP} -d ${HOME}/${USER} -s /bin/bash ${USER} || exit 1

[ -d ${HOME}/${USER} ] \
	&& { echo "Adresar $HOME/$USER uz existuje"; exit 1; } \
	|| { mkdir ${HOME}/${USER}; chmod 700 ${HOME}/${USER}; chown ${USER}:${GROUP} ${HOME}/${USER}; }

cat > ${HOME}/${USER}/uml_start << KONEC
#!/bin/bash
export PATH='$PATH:/usr/lib/uml/'
/home/uml/linux \
mem=64M \
ubd0=${HOME}/${USER}/${USER}.img,/home/uml/${DISTRO}.img \
ubd1=${HOME}/${USER}/${USER}_swap.img \
con0=fd:0,fd:1 \
con1=pty \
con2=port:`expr 9001 + $PORADI` \
con=pts \
eth0=tuntap,,,10.0.0.`expr 1 + $PORADI` \
umid=linux

KONEC

dd if=/dev/zero of=${HOME}/${USER}/${USER}_swap.img seek=512 bs=1M count=1
mkswap ${HOME}/${USER}/${USER}_swap.img
chmod +x ${HOME}/${USER}/uml_start
chown -R ${USER}:${GROUP} ${HOME}/${USER}