[Install]
RequiredBy=vaultlocker-decrypt@%i.service

[Unit]
Description=Ensure loop device for VaultLocker %i
Before=vaultlocker-decrypt@%i.service

[Service]
Type=oneshot
RemainAfterExit=true
EnvironmentFile=/etc/vaultlocker/loop-envs/%i
ExecStart=/sbin/losetup -f ${BACK_FILE}