/lib/partman/automatically_partition/50biggest_free/choices 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 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 | #!/bin/sh
. /lib/partman/lib/base.sh
mypart=''
mysize=0
disks=
if db_get partman-auto/disk; then
disks="$RET"
fi
for dev in $DEVICES/*; do
[ -d $dev ] || continue
if [ "$disks" ]; then
partman_disk="$(cat "$dev/device")"
found=0
for preseed_disk in $disks; do
preseed_id=$(mapdevfs $preseed_disk)
case " $preseed_id " in
*" $partman_disk "*)
found=1
;;
*)
continue
;;
esac
done
if [ "$found" = "0" ]; then
continue
fi
fi
cd $dev
open_dialog PARTITIONS
while { read_line num id size type fs path name; [ "$id" ]; }; do
if [ "$fs" = free ] && [ "$type" != unusable ] && \
! longint_le $size $mysize; then
mysize=$size
mypart=$dev//$id
fi
done
close_dialog
done
if [ "$mypart" ]; then
db_metaget partman-auto/text/use_biggest_free description
printf "$mypart\t$RET"
fi
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