Golem provider kvm user setup

setup-kvm.sh

#! /bin/bash

u=$1

[ "$UID" = 0 ] || {
  exec sudo "$0" "$USER"
  exit 1
}

function is_user_ingroup() {
  local user group

  user="$1"
  group="$2"
  getent group "$group" | grep -q "\b${user}\b"
  return $?
}

getent group kvm >/dev/null || groupadd kvm

cat <<EOF >/etc/udev/rules.d/60-golem-vm.rules
KERNEL=="kvm", GROUP="kvm", MODE="0660"
EOF

chown root:kvm /dev/kvm
setfacl -m "user:$u:rw" /dev/kvm
is_user_ingroup "$u" kvm || adduser "$u" kvm