#!/bin/bash

set -eu
set -o pipefail

# Don't do anything if already mounted (if disk-image-create is invoked with
# no elements specified, this hook actually fires twice, once during
# `run_d root` for the base element, then again when `run_d root` is called
# after automatically pulling in the Ubuntu element)
grep " $TMP_MOUNT_PATH/tmp/ccache" /proc/mounts && exit

DIB_CCACHE_DIR=${DIB_CCACHE_DIR:-$HOME/.cache/image-create/ccache}
mkdir -p $DIB_CCACHE_DIR

sudo mkdir -p $TMP_MOUNT_PATH/tmp/ccache
sudo mount --bind $DIB_CCACHE_DIR $TMP_MOUNT_PATH/tmp/ccache