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#!/bin/bash
set -x
# Author: Daniel Kahn Gillmor <dkg@fifthhorseman.net>
# Date: 2009-10-08
# License: GPL v3+
CMD="$1"
shift
NAME="$1"
VG="$2"
SIZE="${3:-3G}"
RAM="${4:-512}"
TAP="${5:-$(( $( cat /etc/sv/kvm/*/env/TAP | sed 's/^tap//' | sort -n | tail -n 1 ) + 1 ))}"
MAC="${6:-$(cat /etc/sv/kvm/*/env/MAC | head -n1 | cut -f 1-5 -d: ):$(( $( cat /etc/sv/kvm/*/env/MAC | cut -f 6 -d: | sort -n | tail -n 1 ) + 1 ))}"
destroy() {
update-service --remove "/etc/sv/kvm/$NAME"
rm -rf "/etc/sv/kvm/$NAME"
deluser "$NAME"
lvremove "$VG/$NAME"
rm -rf "/home/$NAME"
}
create() {
set -e
# FIXME: check that this stuff doesn't exist yet:
adduser "$NAME" --disabled-password --gecos "$NAME KVM user,,,"
mkdir "/home/$NAME/"{.ssh,vms,"vms/$NAME"}
touch "/home/$NAME/vms/$NAME/netboot"
chown "$NAME:$NAME" "/home/$NAME/"{.ssh,vms,"vms/$NAME","vms/$NAME/netboot"}
cp /root/.ssh/authorized_keys "/home/$NAME/.ssh/"
lvcreate --name "$NAME" --size "$SIZE" $VG
mkdir "/etc/sv/kvm/$NAME"{,/log,/env}
cat > "/etc/sv/kvm/$NAME/log/run" <<EOF
#!/bin/sh
exec 2>&1
exec chpst -e ../env /usr/local/sbin/kvm-manager log
EOF
cat > "/etc/sv/kvm/$NAME/run" <<EOF
#!/bin/sh
exec 2>&1
exec chpst -e ./env /usr/local/sbin/kvm-manager up
EOF
cat > "/etc/sv/kvm/$NAME/finish" <<EOF
#!/bin/sh
exec 2>&1
exec chpst -e ./env /usr/local/sbin/kvm-manager down
EOF
chmod a+x "/etc/sv/kvm/$NAME/"{run,finish,log/run}
echo "$NAME" > "/etc/sv/kvm/$NAME/env/OWNER"
echo "$NAME" > "/etc/sv/kvm/$NAME/env/VMNAME"
echo "$TAP" > "/etc/sv/kvm/$NAME/env/TAP"
echo "$RAM" > "/etc/sv/kvm/$NAME/env/RAM"
echo "$MAC" > "/etc/sv/kvm/$NAME/env/MAC"
}
demo() {
for foo in NAME TAP RAM MAC SIZE ; do
echo "$foo : ${!foo}"
done
}
"$CMD"
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