mount-qcow

#!/bin/sh
set -x
set -eu

IMAGE="$1"
MOUNTPOINT="$2"
shift 2

PREFIX="$(dirname -- "$0")"

LOCK_FILE="$IMAGE.lock"

test ! -s "$MOUNTPOINT"

set -C
  # Should be a symlink but this would not work with `inotifywait`
  # (<https://github.com/rvoicilas/inotify-tools/pull/74>):
  # ln -s "$MOUNTPOINT" "$LOCK_FILE"
  echo "$MOUNTPOINT" > "$LOCK_FILE"
set +C

(
  "$PREFIX/fuseqemu" "$IMAGE" "$MOUNTPOINT" "$@" || true
  rm "$LOCK_FILE"
) &

while test -e "$LOCK_FILE" && ! mountpoint -q "$MOUNTPOINT"; do
  sleep 1
done