+ # setup $ROOT/run
+ mkdir -p "$ROOT/run"
+ mount -t tmpfs -osize=100M tmpfs "$ROOT/run"
+ mkdir -p "$ROOT/run/lock"
+ # setup $ROOT/dev
+ mkdir -p "$ROOT/dev"
+ mount -t tmpfs -osize=100M tmpfs "$ROOT/dev"
+ mknod -m 622 "$ROOT/dev/console" c 5 1
+ mknod -m 666 "$ROOT/dev/null" c 1 3
+ mknod -m 666 "$ROOT/dev/zero" c 1 5
+ mknod -m 666 "$ROOT/dev/ptmx" c 5 2
+ mknod -m 666 "$ROOT/dev/tty" c 5 0
+ mknod -m 444 "$ROOT/dev/random" c 1 8
+ mknod -m 444 "$ROOT/dev/urandom" c 1 9
+ chown root:tty "$ROOT/dev/console"
+ chown root:tty "$ROOT/dev/ptmx"
+ chown root:tty "$ROOT/dev/tty"
+ ln -sTf /proc/self/fd "$ROOT/dev/fd"
+ ln -sTf /proc/self/fd/0 "$ROOT/dev/stdin"
+ ln -sTf /proc/self/fd/1 "$ROOT/dev/stdout"
+ ln -sTf /proc/self/fd/2 "$ROOT/dev/stderr"
+ ln -sTf /proc/kcore "$ROOT/dev/core"
+ mkdir "$ROOT/dev/shm"
+ mkdir "$ROOT/dev/pts"
+ chmod 1777 "$ROOT/dev/shm"
+
+ if mount -t overlay -olowerdir=$3,upperdir=$4,workdir=$5 $1 $2 ; then
+ : # all good
+ else
+ umount -R "$ROOT/dev"
+ umount "$ROOT/run"
+ die "Cannot set up the overlay mount $2"
+ fi
+ cp $REAPER $LIVE/.reaper