#!/usr/bin/env bash

VM=${1:-win10}
GROUP=wheel

# Relevant paths
INCUS=/var/run/incus
VMDIR=${INCUS}/${VM}
SPICE=${INCUS}/${VM}/qemu.spice

# First check if we have access to the shared memory device.
#
# Use udev rules to set permissions.
# IVSHMEM=/dev/shm/looking-glass
IVSHMEM=/dev/kvmfr0
if ! [[ -r ${IVSHMEM} && -w ${IVSHMEM} ]]; then
  ls -l ${IVSHMEM}
  echo "need rw access to shared memory device ${IVSHMEM}"
  exit 1
fi

# Iff necessary, grant read-execute on the incus run directory to
# the group in ${GROUP}.
if ! [[ -x ${INCUS} && -r ${INCUS} ]]; then
  sudo chown :${GROUP} ${INCUS} && sudo chmod g=rx ${INCUS}
fi

# Iff necessary, grant read-execute on the vm directory, and
# read-write on the spice socket, to the group in ${GROUP}.
if ! [[ -x ${VMDIR} && -r ${VMDIR} && -r ${SPICE} && -w ${SPICE} ]]; then
  sudo chown :${GROUP} ${VMDIR} && sudo chmod g=rx ${VMDIR}
  sudo chown :${GROUP} ${SPICE} && sudo chmod g=rw ${SPICE}
fi

looking-glass-client -f ${IVSHMEM} -c ${SPICE} -p 0 win:size=2880x1620 win:title="Looking Glass @ $VM"