summaryrefslogtreecommitdiffstats
path: root/debian/postinst.in
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--debian/postinst.in796
1 files changed, 796 insertions, 0 deletions
diff --git a/debian/postinst.in b/debian/postinst.in
new file mode 100644
index 0000000..68f635b
--- /dev/null
+++ b/debian/postinst.in
@@ -0,0 +1,796 @@
+#!/bin/bash
+set -e
+
+# Apply a sed expression using extended regular expressions in place to a
+# file, if it exists. The file is the first argument in order to work
+# neatly with apply_conf_tweaks.
+sed_conf()
+{
+ if [ -e "$1" ]; then
+ sed -i -re "$2" "$1"
+ fi
+}
+
+# Substitute a debconf answer into a configuration file with the syntax of
+# /etc/default/grub.
+merge_debconf_into_conf()
+{
+ local tmpfile; tmpfile="$1"
+ local setting; setting="$2"
+ local template; template="$3"
+
+ db_get "$template"
+ local value; value="$(echo "$RET" | sed -e 's,[$`"\],\\&,g')"
+ if grep -q "^${setting}=" "$tmpfile"; then
+ value="$(echo "$value" | sed -e 's,[\@],\\&,g')"
+ sed -i -re "s@^(${setting}=).*@\1\"${value}\"@" "$tmpfile"
+ else
+ echo >> "$tmpfile"
+ echo "${setting}=\"${value}\"" >> "$tmpfile"
+ fi
+}
+
+# Apply the same configuration tweak to multiple files.
+apply_conf_tweaks()
+{
+ local files; files="$1"
+ local cmd; cmd="$2"
+ local file
+ shift 2
+
+ for file in $files; do
+ if [ -e "$file" ]; then
+ "$cmd" "$file" "$@"
+ fi
+ done
+}
+
+get_wubi_device()
+{
+ if [ ! -x /usr/share/lupin-support/grub-mkimage ] || \
+ ! /usr/share/lupin-support/grub-mkimage --test; then
+ return 1
+ fi
+
+ local bootdev="$(grub-probe --target=device /boot)" || true
+ local loop_file=
+ case $bootdev in
+ /dev/loop/*|/dev/loop[0-9])
+ loop_file="$(losetup "$bootdev" | sed -e "s/^[^(]*(\([^)]\+\)).*/\1/")"
+ # If it's loop-mounted from another device, it isn't Wubi.
+ case $loop_file in
+ /dev/*) return 1 ;;
+ esac
+ ;;
+ *) return 1 ;;
+ esac
+
+ echo "$bootdev"
+}
+
+# This only works on a Linux system with udev running. This is probably the
+# vast majority of systems where we need any of this, though, and we fall
+# back reasonably gracefully if we don't have it.
+cached_available_ids=
+available_ids()
+{
+ local id path
+
+ if [ "$cached_available_ids" ]; then
+ echo "$cached_available_ids"
+ return
+ fi
+
+ [ -d /dev/disk/by-id ] || return
+ cached_available_ids="$(
+ for path in /dev/disk/by-id/*; do
+ [ -e "$path" ] || continue
+ printf '%s %s\n' "$path" "$(readlink -f "$path")"
+ done | sort -k2 -s -u | cut -d' ' -f1
+ )"
+ echo "$cached_available_ids"
+}
+
+# Returns non-zero and no output if no mapping can be found.
+device_to_id()
+{
+ local id
+ for id in $(available_ids); do
+ if [ "$(readlink -f "$id")" = "$(readlink -f "$1")" ]; then
+ echo "$id"
+ return 0
+ fi
+ done
+ # Fall back to the plain device name if there's no by-id link for it.
+ if [ -e "$1" ]; then
+ echo "$1"
+ return 0
+ fi
+ return 1
+}
+
+all_disks()
+{
+ local id
+ for id in $(available_ids); do
+ case $id in
+ *-part*) ;;
+ *) echo "$id" ;;
+ esac
+ done
+}
+
+all_partitions()
+{
+ local id ids
+ ids=
+ for id in $(available_ids); do
+ if [ "$id" != "$1" ] && [ "${id%-part*}" = "$1" ]; then
+ ids="${ids:+$ids }$id"
+ fi
+ done
+ echo "$ids"
+}
+
+# In order to determine whether we accidentally ran grub-install without
+# upgrade-from-grub-legacy on versions older than 1.98+20100617-1, we need
+# to be able to scan a disk to determine whether GRUB 2 was installed in its
+# boot sector. This is specific to i386-pc (but that's the only platform
+# where we need it).
+scan_grub2()
+{
+ if ! dd if="$1" bs=512 count=1 2>/dev/null | grep -aq GRUB; then
+ # No version of GRUB is installed.
+ return 1
+ fi
+
+ # The GRUB boot sector always starts with a JMP instruction.
+ initial_jmp="$(dd if="$1" bs=2 count=1 2>/dev/null | od -Ax -tx1 | \
+ head -n1 | cut -d' ' -f2,3)"
+ [ "$initial_jmp" ] || return 1
+ initial_jmp_opcode="${initial_jmp%% *}"
+ [ "$initial_jmp_opcode" = eb ] || return 1
+ initial_jmp_operand="${initial_jmp#* }"
+ case $initial_jmp_operand in
+ 47|4b|4c|63)
+ # I believe this covers all versions of GRUB 2 up to the package
+ # version where we gained a more explicit mechanism. GRUB Legacy
+ # always had 48 here.
+ return 0
+ ;;
+ esac
+
+ return 1
+}
+
+# for Linux
+sysfs_size()
+{
+ local num_sectors sector_size size
+ # Try to find out the size without relying on a partitioning tool being
+ # installed. This isn't too hard on Linux 2.6 with sysfs, but we have to
+ # try a couple of variants on detection of the sector size.
+ if [ -e "$1/size" ]; then
+ num_sectors="$(cat "$1/size")"
+ sector_size=512
+ if [ -e "$1/queue/logical_block_size" ]; then
+ sector_size="$(cat "$1/queue/logical_block_size")"
+ elif [ -e "$1/queue/hw_sector_size" ]; then
+ sector_size="$(cat "$1/queue/hw_sector_size")"
+ fi
+ size="$(expr "$num_sectors" \* "$sector_size" / 1000 / 1000)"
+ fi
+ [ "$size" ] || size='???'
+ echo "$size"
+}
+
+# for kFreeBSD
+camcontrol_size()
+{
+ local num_sectors sector_size size=
+
+ if num_sectors="$(camcontrol readcap "$1" -q -s -N)"; then
+ sector_size="$(camcontrol readcap "$1" -q -b)"
+ size="$(expr "$num_sectors" \* "$sector_size" / 1000 / 1000)"
+ fi
+
+ [ "$size" ] || size='???'
+ echo "$size"
+}
+
+maybe_udevadm()
+{
+ if command -v udevadm >/dev/null 2>&1; then
+ udevadm "$@" || true
+ fi
+}
+
+# Returns value in $RET, like a debconf command.
+describe_disk()
+{
+ local disk id sysfs_path disk_basename size model
+ disk="$1"
+ id="$2"
+
+ model=
+ case $(uname -s) in
+ Linux)
+ sysfs_path="$(maybe_udevadm info -n "$disk" -q path)"
+ if [ -z "$sysfs_path" ]; then
+ sysfs_path="/block/$(printf %s "${disk#/dev/}" | sed 's,/,!,g')"
+ fi
+ size="$(sysfs_size "/sys$sysfs_path")"
+
+ model="$(maybe_udevadm info -n "$disk" -q property | sed -n 's/^ID_MODEL=//p')"
+ if [ -z "$model" ]; then
+ model="$(maybe_udevadm info -n "$disk" -q property | sed -n 's/^DM_NAME=//p')"
+ if [ -z "$model" ]; then
+ model="$(maybe_udevadm info -n "$disk" -q property | sed -n 's/^MD_NAME=//p')"
+ if [ -z "$model" ] && command -v dmsetup >/dev/null 2>&1; then
+ model="$(dmsetup info -c --noheadings -o name "$disk" 2>/dev/null || true)"
+ fi
+ fi
+ fi
+ ;;
+ GNU/kFreeBSD)
+ disk_basename=$(basename "$disk")
+ size="$(camcontrol_size "$disk_basename")"
+ model="$(camcontrol inquiry "$disk_basename" | sed -ne "s/^pass0: <\([^>]*\)>.*/\1/p")"
+ ;;
+ esac
+
+ [ "$model" ] || model='???'
+
+ db_subst grub-pc/disk_description DEVICE "$disk"
+ db_subst grub-pc/disk_description SIZE "$size"
+ db_subst grub-pc/disk_description MODEL "$model"
+ db_metaget grub-pc/disk_description description
+}
+
+# Returns value in $RET, like a debconf command.
+describe_partition()
+{
+ local disk part id path sysfs_path diskbase partbase size
+ disk="$1"
+ part="$2"
+ id="$3"
+ path="$4"
+
+ sysfs_path="$(maybe_udevadm info -n "$part" -q path)"
+ if [ -z "$sysfs_path" ]; then
+ diskbase="${disk#/dev/}"
+ diskbase="$(printf %s "$diskbase" | sed 's,/,!,g')"
+ partbase="${part#/dev/}"
+ partbase="$(printf %s "$partbase" | sed 's,/,!,g')"
+ sysfs_path="/block/$diskbase/$partbase"
+ fi
+ size="$(sysfs_size "/sys$sysfs_path")"
+
+ db_subst grub-pc/partition_description DEVICE "$part"
+ db_subst grub-pc/partition_description SIZE "$size"
+ db_subst grub-pc/partition_description PATH "$path"
+ db_metaget grub-pc/partition_description description
+}
+
+usable_partitions()
+{
+ local last_partition path partition partition_id
+
+ last_partition=
+ for path in / /boot /boot/grub; do
+ partition="$(grub-probe -t device "$path" || true)"
+ if [ -z "$partition" ] || [ "$partition" = "$last_partition" ]; then
+ continue
+ fi
+ partition_id="$(device_to_id "$partition" || true)"
+ echo "$path:$partition_id"
+ last_partition="$partition"
+ done | sort -t: -k2
+}
+
+get_mountpoint()
+{
+ local relpath boot_mountpoint
+
+ relpath="$(grub-mkrelpath "$1")"
+ boot_mountpoint="${1#$relpath}"
+ echo "${boot_mountpoint:-/}"
+}
+
+config_item()
+{
+ for x in /etc/default/grub /etc/default/grub.d/*.cfg; do
+ if [ -e "$x" ]; then
+ # Lose any output here so we don't confuse our
+ # caller. The xen packages echo stuff here, Aargh!
+ . "$x" > /dev/null
+ fi
+ done
+ if [ "$(eval echo "\${$1+set}")" = set ]; then
+ eval echo "\$$1"
+ else
+ return
+ fi
+}
+
+running_in_container()
+{
+ type systemd-detect-virt >/dev/null 2>&1 && systemd-detect-virt --quiet --container
+}
+
+no_nvram_arg() {
+ db_get grub2/update_nvram
+ if [ "$RET" = false ]; then
+ echo "--no-nvram"
+ fi
+}
+
+run_grub_install()
+{
+ if ! grub-install $@ ; then
+ echo "Failed: grub-install $@" >&2
+ echo "WARNING: Bootloader is not properly installed, system may not be bootable" >&2
+ fi
+}
+
+case "$1" in
+ configure)
+ . /usr/share/debconf/confmodule
+
+ devicemap_regenerated=
+
+ if egrep -q '^[[:space:]]*post(inst|rm)_hook[[:space:]]*=[[:space:]]*(/sbin/|/usr/sbin/)?update-grub' /etc/kernel-img.conf 2>/dev/null; then
+ echo 'Removing update-grub hooks from /etc/kernel-img.conf in favour of' >&2
+ echo '/etc/kernel/ hooks.' >&2
+ sed -ri /etc/kernel-img.conf -e '\%^[[:space:]]*post(inst|rm)_hook[[:space:]]*=[[:space:]]*(/sbin/|/usr/sbin/)?update-grub%d'
+ fi
+
+ mkdir -p /boot/grub
+
+ case @PACKAGE@ in
+ grub-pc)
+ if test -e /boot/grub/device.map && ! test -e /boot/grub/core.img && \
+ ! test -e /boot/grub/@FIRST_CPU_PLATFORM@/core.img; then
+ # Looks like your device.map was generated by GRUB Legacy, which
+ # used to generate broken device.map (see #422851). Avoid the risk
+ # by regenerating it.
+ grub-mkdevicemap --no-floppy
+ devicemap_regenerated=1
+ fi
+ ;;
+ esac
+
+ if test -z "$devicemap_regenerated" && \
+ dpkg --compare-versions "$2" lt-nl 1.99~20101210-2 && \
+ grep -qs /md-uuid- /boot/grub/device.map; then
+ echo "Removing MD devices from device.map, since the BIOS cannot read from these." >&2
+ sed -i '/\/md-uuid-/d' /boot/grub/device.map
+ fi
+
+ tmp_default_grub="$(mktemp -t grub.XXXXXXXXXX)"
+ trap "rm -f ${tmp_default_grub}" EXIT
+ cp -p /usr/share/grub/default/grub ${tmp_default_grub}
+
+ # Apply configuration from debconf to both the template configuration
+ # file (so that any ucf conflict resolution is shown with the configured
+ # values in place) and to /etc/default/grub (in order that debconf
+ # changes are effective even if we have to use UCF_FORCE_CONFFOLD=1).
+ #
+ # The config script takes care to read current values from
+ # /etc/default/grub before possibly prompting the user to change them,
+ # so this should comply with policy's strictures on configuration file
+ # handling: the debconf prompts constitute an explicit administrator
+ # request to change the configuration file.
+ #
+ # If the administrator changes their answers to any of these debconf
+ # questions in the same run as a change to the template, then they'll
+ # get a spurious ucf conflict. To fix this, we'd need to keep track of
+ # the old answers, substitute the old answers into $tmp_default_grub,
+ # and substitute the new answers into /etc/default/grub. Fortunately,
+ # debconf won't normally ask these questions again during an upgrade, so
+ # this should be rare in practice.
+
+ conf_files="$tmp_default_grub /etc/default/grub"
+
+ apply_conf_tweaks "$conf_files" merge_debconf_into_conf GRUB_CMDLINE_LINUX grub2/linux_cmdline
+ apply_conf_tweaks "$conf_files" merge_debconf_into_conf GRUB_CMDLINE_LINUX_DEFAULT grub2/linux_cmdline_default
+
+ # Horrible stuff here, as the os-prober option is a negative
+ # setting (GRUB_DISABLE_OS_PROBER). To not confuse people with
+ # double negative questions in templates, invert it here.
+ db_get grub2/enable_os_prober
+ if [ "$RET" = false ]; then
+ # enable == false -> put in place the commented-out default
+ # #GRUB_DISABLE_OS_PROBER=false that we ship with
+ apply_conf_tweaks "$conf_files" sed_conf 's/^.*GRUB_DISABLE_OS_PROBER.*$/#GRUB_DISABLE_OS_PROBER=false/'
+ else
+ # enable == true -> put in place a valid GRUB_DISABLE_OS_PROBER=false
+ apply_conf_tweaks "$conf_files" sed_conf 's/^.*GRUB_DISABLE_OS_PROBER.*$/GRUB_DISABLE_OS_PROBER=false/'
+ fi
+
+ case @PACKAGE@ in
+ grub-pc)
+ apply_conf_tweaks "$conf_files" merge_debconf_into_conf GRUB_TIMEOUT grub-pc/timeout
+ apply_conf_tweaks "$conf_files" sed_conf 's/^(GRUB_TIMEOUT=)"([0-9][0-9]*)"/\1\2/'
+ db_get grub-pc/hidden_timeout
+ if [ "$RET" = false ]; then
+ apply_conf_tweaks "$conf_files" sed_conf 's/^GRUB_HIDDEN_TIMEOUT=/#&/'
+ fi
+ ;;
+ esac
+
+ # If the template configuration file hasn't changed, then no conflict is
+ # possible. ucf can't figure this out for itself since we apply
+ # debconf-based customisations on top of the template configuration
+ # file.
+ if [ -e /var/lib/grub/ucf/grub.previous ] && \
+ cmp -s /usr/share/grub/default/grub /var/lib/grub/ucf/grub.previous && \
+ [ -e /etc/default/grub ]; then
+ ucf_env=UCF_FORCE_CONFFOLD=1
+ else
+ ucf_env=
+ fi
+
+ env $ucf_env ucf --three-way --debconf-ok --sum-file=/usr/share/grub/default/grub.md5sum "$tmp_default_grub" /etc/default/grub
+ cp -aZ /usr/share/grub/default/grub /var/lib/grub/ucf/grub.previous
+ package="$(ucfq --with-colons /etc/default/grub | cut -d : -f 2)"
+ if echo $package | grep -q "^grub-" ; then
+ ucfr --force @PACKAGE@ /etc/default/grub
+ else
+ ucfr @PACKAGE@ /etc/default/grub
+ fi
+
+ case @PACKAGE@ in
+ grub-pc)
+
+ fix_mixed_system=
+ if test -e /boot/grub/stage2 && test -e /boot/grub/menu.lst && \
+ ! test -e /boot/grub/grub2-installed && \
+ test -z "$UPGRADE_FROM_GRUB_LEGACY"; then
+ # Unfortunately, it's still possible that the user upgraded fully
+ # to GRUB 2 in some way other than running
+ # upgrade-from-grub-legacy; perhaps they ran grub-install by hand
+ # for some reason. It's really quite difficult to detect this
+ # situation, because the only difference between this and a
+ # working chainloaded setup is that in this case grub-setup has
+ # been run. So, to try to tell the difference, we scan the boot
+ # sectors of all disks for a GRUB 2 boot sector. Hopefully this
+ # won't cause too much to explode, since I can't think of a better
+ # method.
+ grub2_disks=
+ for disk in $(all_disks); do
+ if scan_grub2 "$disk"; then
+ grub2_disks="${grub2_disks:+$grub2_disks }$(readlink -f "$disk")"
+ fi
+ done
+ if [ "$grub2_disks" ]; then
+ # No || true here; it's vital that the user sees this, and it's
+ # better to throw an error than to do the wrong thing.
+ db_subst grub-pc/mixed_legacy_and_grub2 DISKS "$grub2_disks"
+ db_fset grub-pc/mixed_legacy_and_grub2 seen false
+ db_input critical grub-pc/mixed_legacy_and_grub2
+ db_go
+ db_get grub-pc/mixed_legacy_and_grub2
+ if [ "$RET" = true ]; then
+ db_reset grub-pc/install_devices
+ UPGRADE_FROM_GRUB_LEGACY=1
+ fix_mixed_system=1
+ # Fall through to normal installation logic.
+ fi
+ fi
+ fi
+
+ # Make sure that Wubi users never see confusing device prompts.
+ # Wubi is a very specialised hack that does complicated things with
+ # grub-install diversions to create an image that's chained from the
+ # Windows boot loader to boot an operating system from a file on a
+ # Windows file system. In these circumstances, prompting for where
+ # to install GRUB is not going to help anyone.
+ wubi_device="$(get_wubi_device)" || true
+ if [ "$wubi_device" ]; then
+ db_set grub-pc/install_devices "$wubi_device"
+ db_fset grub-pc/install_devices seen true
+ fi
+
+ if test -e /boot/grub/stage2 && test -e /boot/grub/menu.lst && \
+ ! test -e /boot/grub/grub2-installed && \
+ test -z "$UPGRADE_FROM_GRUB_LEGACY"; then
+ db_get grub-pc/chainload_from_menu.lst
+ if $RET ; then
+ # Create core.img (but do not risk writing to MBR).
+ # Using grub-probe instead of "(hd0)" avoids (UUID=) hack slowness
+ # in case /boot/grub is not on (hd0) in device.map.
+ echo "Generating core.img" >&2
+ grub-install --target=i386-pc --no-floppy --grub-setup=/bin/true "$(grub-probe -t drive /boot/grub)" > /dev/null
+
+ # Update menu.lst to reflect that:
+ # - core.img is present now
+ # - core.img has to be the first option
+ echo "Saving menu.lst backup in /boot/grub/menu.lst_backup_by_grub2_postinst" >&2
+ cp /boot/grub/menu.lst{,_backup_by_grub2_postinst}
+ echo "Running update-grub Legacy to hook our core.img in it" >&2
+ LET_US_TRY_GRUB_2=true /usr/lib/grub-legacy/update-grub 2>&1 | sed -e "s/^/ /g" >&2
+ # We just hooked GRUB 2 in menu.lst; then also generate grub.cfg.
+ touch /boot/grub/grub.cfg
+ fi
+ elif running_in_container; then
+ # Skip grub-install in containers.
+ :
+ elif test -e /boot/grub/core.img || \
+ test -e /boot/grub/@FIRST_CPU_PLATFORM@/core.img || \
+ test "$UPGRADE_FROM_GRUB_LEGACY" || test "$wubi_device"; then
+ question=grub-pc/install_devices
+ priority=high
+ device_map="$(grub-mkdevicemap -m - | grep -v '^(fd[0-9]\+)' || true)"
+ devices="$(echo "$device_map" | cut -f2)"
+ db_get grub-pc/install_devices
+ valid=1
+ for device in $RET; do
+ if [ ! -e "${device%,}" ]; then
+ valid=0
+ break
+ fi
+ done
+ if [ "$valid" = 0 ]; then
+ question=grub-pc/install_devices_disks_changed
+ priority=critical
+ db_set "$question" "$RET"
+ db_fset "$question" seen false
+ db_fset grub-pc/install_devices_empty seen false
+ fi
+
+ while :; do
+ ids=
+ descriptions=
+ partitions="$(usable_partitions)"
+ for device in $devices; do
+ disk_id="$(device_to_id "$device" || true)"
+ if [ "$disk_id" ]; then
+ ids="${ids:+$ids, }$disk_id"
+ describe_disk "$(readlink -f "$device")" "$disk_id"
+ RET="$(printf %s "$RET" | sed 's/,/\\,/g')"
+ descriptions="${descriptions:+$descriptions, }$RET"
+ for partition_pair in $partitions; do
+ partition_id="${partition_pair#*:}"
+ if [ "${partition_id#$disk_id-part}" != "$partition_id" ]; then
+ ids="${ids:+$ids, }$partition_id"
+ describe_partition "$(readlink -f "$device")" "$(readlink -f "$partition_id")" "$partition_id" "$(get_mountpoint "${partition_pair%%:*}")"
+ RET="$(printf %s "$RET" | sed 's/,/\\,/g')"
+ descriptions="${descriptions:+$descriptions, }$RET"
+ fi
+ done
+ fi
+ done
+ # Some "partitions" may in fact be at the disk level, e.g. RAID.
+ # List these as well if they haven't already been listed.
+ for partition_pair in $partitions; do
+ partition_id="${partition_pair#*:}"
+ if [ "${partition_id#*-part}" = "$partition_id" ]; then
+ case ", $ids, " in
+ ", $partition_id, ") ;;
+ *)
+ ids="${ids:+$ids, }$partition_id"
+ describe_disk "$(readlink -f "$partition_id")" "$partition_id"
+ RET="$(printf %s "$RET" | sed 's/,/\\,/g')"
+ descriptions="${descriptions:+$descriptions, }$RET"
+ ;;
+ esac
+ fi
+ done
+ db_subst "$question" RAW_CHOICES "$ids"
+ db_subst "$question" CHOICES "$descriptions"
+ db_input "$priority" "$question" || true
+ db_go
+ db_get "$question"
+ failed_devices=
+ echo "@PACKAGE@: Running grub-install ..."
+ for i in $RET; do
+ real_device="$(readlink -f "${i%,}")"
+ if [ ! -e "$real_device" ]; then
+ echo "$real_device does not exist, so cannot grub-install to it!" >&2
+ failed_devices="$failed_devices $real_device"
+ else
+ if grub-install --target=i386-pc --force --no-floppy $real_device ; then
+ echo " grub-install success for $real_device"
+ # We just installed GRUB 2; then also generate grub.cfg.
+ touch /boot/grub/grub.cfg
+ else
+ echo " grub-install failure for $real_device"
+ failed_devices="$failed_devices $real_device"
+ fi
+ fi
+ done
+
+ if [ "$question" != grub-pc/install_devices ] && [ "$RET" ]; then
+ # XXX cjwatson 2019-02-26: The description of
+ # grub-pc/install_devices_disks_changed ought to explain that
+ # selecting no devices will leave the configuration unchanged
+ # so that you'll be prompted again next time, but it's a bit
+ # close to the Debian 10 release to be introducing new
+ # translatable text. For now, it should be sufficient to
+ # avoid losing configuration data.
+ db_set grub-pc/install_devices "$RET"
+ db_fset grub-pc/install_devices seen true
+ fi
+
+ if [ "$failed_devices" ]; then
+ if [ "$UPGRADE_FROM_GRUB_LEGACY" ]; then
+ db_subst grub-pc/install_devices_failed_upgrade FAILED_DEVICES "$failed_devices"
+ db_fset grub-pc/install_devices_failed_upgrade seen false
+ if db_input critical grub-pc/install_devices_failed_upgrade; then
+ db_go
+ db_get grub-pc/install_devices_failed_upgrade
+ if [ "$RET" = true ]; then
+ db_fset "$question" seen false
+ db_fset grub-pc/install_devices_failed_upgrade seen false
+ continue
+ else
+ exit 1
+ fi
+ else
+ echo "You must correct your GRUB install devices before proceeding:" >&2
+ echo >&2
+ echo " DEBIAN_FRONTEND=dialog dpkg --configure grub-pc" >&2
+ echo " dpkg --configure -a" >&2
+ exit 1 # noninteractive
+ fi
+ else
+ db_subst grub-pc/install_devices_failed FAILED_DEVICES "$failed_devices"
+ db_fset grub-pc/install_devices_failed seen false
+ if db_input critical grub-pc/install_devices_failed; then
+ db_go
+ db_get grub-pc/install_devices_failed
+ if [ "$RET" = true ]; then
+ break
+ else
+ db_fset "$question" seen false
+ db_fset grub-pc/install_devices_failed seen false
+ continue
+ fi
+ else
+ echo "You must correct your GRUB install devices before proceeding:" >&2
+ echo >&2
+ echo " DEBIAN_FRONTEND=dialog dpkg --configure grub-pc" >&2
+ echo " dpkg --configure -a" >&2
+ exit 1 # noninteractive
+ fi
+ fi
+ fi
+
+ db_get "$question"
+ if [ -z "$RET" ]; then
+ # Reset the seen flag if the current answer is false, since
+ # otherwise we'll loop with no indication of why.
+ db_get grub-pc/install_devices_empty
+ if [ "$RET" = false ]; then
+ db_fset grub-pc/install_devices_empty seen false
+ fi
+ if db_input critical grub-pc/install_devices_empty; then
+ db_go
+ db_get grub-pc/install_devices_empty
+ if [ "$RET" = true ]; then
+ break
+ else
+ db_fset "$question" seen false
+ db_fset grub-pc/install_devices_empty seen false
+ fi
+ else
+ db_get grub-pc/install_devices_empty
+ if [ "$RET" = true ]; then
+ break
+ else
+ echo "You must correct your GRUB install devices before proceeding:" >&2
+ echo >&2
+ echo " DEBIAN_FRONTEND=dialog dpkg --configure grub-pc" >&2
+ echo " dpkg --configure -a" >&2
+ exit 1 # noninteractive
+ fi
+ fi
+ else
+ break
+ fi
+ done
+ fi
+
+ # /boot/grub/ has more chances of being accessible by GRUB
+ for i in /usr/share/grub/unicode.pf2 ; do
+ if test -e $i ; then
+ cp $i /boot/grub/
+ fi
+ done
+
+ if [ "$fix_mixed_system" ]; then
+ # These never contain any valuable information, and they aren't
+ # useful for boot any more, since we just overwrote MBR/PBR.
+ rm -f /boot/grub/{{xfs,reiserfs,e2fs,fat,jfs,minix}_stage1_5,stage{1,2}}
+ # Remove marker file used to indicate that grub-install was run
+ # rather than upgrade-from-grub-legacy. Since stage2 has been
+ # removed, we don't need this any more.
+ rm -f /boot/grub/grub2-installed
+ fi
+ ;;
+
+ grub-efi-ia32|grub-efi-amd64|grub-efi-ia64|grub-efi-arm|grub-efi-arm64)
+ bootloader_id="$(config_item GRUB_DISTRIBUTOR | tr A-Z a-z | \
+ cut -d' ' -f1)"
+ case $bootloader_id in
+ kubuntu) bootloader_id=ubuntu ;;
+ devuan) bootloader_id=debian ;;
+ esac
+ if [ "$bootloader_id" ] && [ -d "/boot/efi/EFI/$bootloader_id" ]; then
+ case @PACKAGE@ in
+ grub-efi-ia32) target=i386-efi ;;
+ grub-efi-amd64) target=x86_64-efi ;;
+ grub-efi-ia64) target=ia64-efi ;;
+ grub-efi-arm) target=arm-efi ;;
+ grub-efi-arm64) target=arm64-efi ;;
+ esac
+ db_get grub2/force_efi_extra_removable
+ if [ "$RET" = true ]; then
+ FORCE_EXTRA_REMOVABLE="--force-extra-removable"
+ fi
+ NO_NVRAM="$(no_nvram_arg)"
+ run_grub_install --target="$target" "$FORCE_EXTRA_REMOVABLE" "$NO_NVRAM"
+ fi
+
+ # /boot/grub/ has more chances of being accessible by GRUB
+ for i in /usr/share/grub/unicode.pf2 ; do
+ if test -e $i ; then
+ cp $i /boot/grub/
+ fi
+ done
+
+ if type update-secureboot-policy >/dev/null 2>&1; then
+ update-secureboot-policy || true
+ fi
+ ;;
+
+ grub-ieee1275)
+ case $(dpkg --print-architecture) in
+ powerpc|ppc64|ppc64el)
+ # Output may be empty; if so, just update the core image but
+ # don't install it to any PReP partition.
+ prep_bootdev="$(/usr/lib/grub/powerpc-ieee1275/prep-bootdev)"
+ NO_NVRAM="$(no_nvram_arg)"
+ run_grub_install --target=powerpc-ieee1275 $prep_bootdev "$NO_NVRAM"
+ ;;
+ esac
+ ;;
+
+ grub-yeeloong)
+ run_grub_install --target=mipsel-loongson
+ ;;
+
+ grub-xen)
+ # Install for x86_64 regardless of arch, since a 32-bit userspace can still boot with a 64-bit kernel.
+ mkdir -p /boot/xen
+ run_grub_install --target=x86_64-xen
+ case $(dpkg --print-architecture) in
+ i386)
+ run_grub_install --target=i386-xen
+ ;;
+ esac
+ # Similarly, the PVH boot loader is usable regardless of arch.
+ run_grub_install --target=i386-xen_pvh
+ ;;
+ esac
+
+ # If grub.cfg has been generated, update it.
+ if test -e /boot/grub/grub.cfg && ! running_in_container; then
+ update-grub 3>&-
+ fi
+ ;;
+ abort-upgrade|abort-remove|abort-deconfigure)
+ ;;
+ *)
+ echo "postinst called with unknown argument \`$1'" >&2
+ exit 1
+ ;;
+esac
+
+# dh_installdeb will replace this with shell code automatically
+# generated by other debhelper scripts.
+
+#DEBHELPER#
+
+exit 0