/lib/partman/commit.d/50format_efi is in ubiquity 2.10.16.
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 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 | #!/bin/sh
. /lib/partman/lib/base.sh
ARCH="$(archdetect)"
case $ARCH in
i386/*|amd64/*)
new_efi_fs=fat32
;;
*)
new_efi_fs=fat16
;;
esac
enable_swap
for dev in $DEVICES/*; do
[ -d "$dev" ] || continue
cd $dev
partitions=
open_dialog PARTITIONS
while { read_line num id size type fs path name; [ "$id" ]; }; do
[ "$fs" != free ] || continue
partitions="$partitions $id,$num"
done
close_dialog
for part in $partitions; do
id=${part%,*}
num=${part#*,}
[ -f $id/method -a -f $id/format ] || continue
# Formatting an EFI System Partition that already has a
# filesystem on it is dangerous
# (https://bugs.launchpad.net/bugs/769669). The least bad
# option seems to be to skip such partitions entirely.
if [ -f $id/detected_filesystem ]; then
continue
fi
method=$(cat $id/method)
if [ "$method" = efi ]; then
if [ -f $id/formatted ] && \
[ $id/formatted -nt $id/method ]; then
continue
fi
log "Try to format EFI $new_efi_fs fs in $dev/$id"
template=partman-basicfilesystems/progress_formatting
open_dialog PARTITION_INFO $id
read_line x1 x2 x3 x4 x5 device x6
close_dialog
RET=''
db_metaget partman/filesystem_short/efi description || RET=''
[ "$RET" ] || RET=efi
db_subst $template TYPE "$RET"
db_subst $template PARTITION "$num"
db_subst $template DEVICE $(humandev $(cat device))
name_progress_bar $template
open_dialog CREATE_FILE_SYSTEM $id $new_efi_fs
read_line status
close_dialog
sync
if [ "$status" != OK ]; then
db_subst partman-basicfilesystems/create_failed TYPE efi
db_subst partman-basicfilesystems/create_failed PARTITION "$num"
db_subst partman-basicfilesystems/create_failed DEVICE $(humandev $(cat device))
db_input critical partman-basicfilesystems/create_failed || true
db_go || true
#disable_swap
exit 1
fi
>$id/formatted
fi
done
done
#disable_swap
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