/lib/partman/check.d/10ext2_or_ext3_boot 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.
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# Check that the boot partition is the 1st (primary) partition, that
# it is of type ext2 or ext3, and that it is marked as bootable.
ARCH="$(archdetect)"
case $ARCH in
arm*)
machine=$(grep "^Hardware" /proc/cpuinfo | sed 's/Hardware\s*:\s*//') || true
case "$machine" in
"Buffalo Linkstation Pro/Live" | "Buffalo/Revogear Kurobox Pro" \
| "Buffalo Linkstation Mini")
;;
"GLAN Tank")
;;
"HP Media Vault mv2120")
;;
*)
exit 0
;;
esac
;;
mipsel/loongson-2f)
;;
*)
exit 0
;;
esac
. /lib/partman/lib/base.sh
for dev in $DEVICES/*; do
[ -d "$dev" ] || continue
cd $dev
open_dialog PARTITIONS
while { read_line num id size type fs path name; [ "$id" ]; }; do
[ "$fs" != free ] || continue
[ -f $id/method ] || continue
[ -f $id/acting_filesystem ] || continue
[ -f $id/mountpoint ] || continue
mountpoint=$(cat $id/mountpoint)
filesystem=$(cat $id/acting_filesystem)
if [ "$mountpoint" = / ]; then
root_fs=$filesystem
root_type=$type
root_path=$path
if [ -f $id/bootable ]; then
root_bootable=yes
fi
elif [ "$mountpoint" = /boot ]; then
boot_fs=$filesystem
boot_type=$type
boot_path=$path
if [ -f $id/bootable ]; then
boot_bootable=yes
fi
fi
done
close_dialog
done
# If no separate boot partition exists root acts as boot
if [ -z "$boot_path" ]; then
boot_fs=$root_fs
boot_type=$root_type
boot_path=$root_path
boot_bootable=$root_bootable
fi
# We need an ext2 or ext3 filesystem to boot
if [ "$boot_fs" != ext2 ] && [ "$boot_fs" != ext3 ]; then
db_set partman-ext3/boot_not_ext2_or_ext3 true
db_input critical partman-ext3/boot_not_ext2_or_ext3 || true
db_go || true
db_get partman-ext3/boot_not_ext2_or_ext3
if [ "$RET" = true ]; then
exit 1
fi
fi
# The boot file system has to be the first primary partition
# ... but for now don't run the check if /boot is on RAID1. Right now,
# there's no good way to map a RAID device to its physical partition
# and then run the checks on that partition (see #509799).
if echo $boot_path | grep -q "^/dev/md"; then
raid=${boot_path#/dev/}
if grep "^$raid" /proc/mdstat | grep -q " raid1 "; then
exit 0
fi
fi
part_num=$(echo "$boot_path" | sed -e 's/.*[^0-9]\+//')
if [ "$boot_type" != primary ] || [ "$part_num" -ne 1 ]; then
db_set partman/boot_not_first_partition true
db_input critical partman/boot_not_first_partition || true
db_go || true
db_get partman/boot_not_first_partition
if [ "$RET" = true ]; then
exit 1
fi
fi
# Make sure that the boot partition is marked as bootable
## Note: this won't work for RAID because the physical partition must be
## marked bootable whereas we're checking the /boot partition (i.e. the
## md partition on top of the physical partition). However, there's
## some code above that exists this script when /boot is on RAID1.
if [ "$ARCH" != mipsel/loongson-2f ] && [ "$boot_bootable" != "yes" ]; then
db_set partman-ext3/boot_not_bootable true
db_input critical partman-ext3/boot_not_bootable || true
db_go || true
db_get partman-ext3/boot_not_bootable
if [ "$RET" = true ]; then
exit 1
fi
fi
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