/lib/partman/free_space/98chs/do_option is in ubiquity 18.04.14.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 | #!/bin/sh
. /lib/partman/lib/base.sh
dev="$2"
id=$3
cd $dev
open_dialog GET_CHS $id
read_line cs hs ss ce he se
close_dialog
db_subst partman/show_free_chs FROMCHS "($cs,$hs,$ss)"
db_subst partman/show_free_chs TOCHS "($ce,$he,$se)"
db_input critical partman/show_free_chs || true
db_go || true
|