debian/postinst.in

   1 #!/bin/bash
   2 set -e
   3
   4 merge_debconf_into_conf()
   5 {
   6   local tmpfile; tmpfile="$1"
   7   local setting; setting="$2"
   8   local template; template="$3"
   9
  10   db_get "$template"
  11   local value; value="$(echo "$RET" | sed -e 's,[$`"\],\\&,g')"
  12   if grep -q "^${setting}=" "$tmpfile"; then
  13     value="$(echo "$value" | sed -e 's,[\@],\\&,g')"
  14     sed -i -re "s@^(${setting}=).*@\1\"${value}\"@" "$tmpfile"
  15   else
  16     echo >> "$tmpfile"
  17     echo "${setting}=\"${value}\"" >> "$tmpfile"
  18   fi
  19 }
  20
  21 get_wubi_device()
  22 {
  23   if [ ! -x /usr/share/lupin-support/grub-mkimage ] || \
  24      ! /usr/share/lupin-support/grub-mkimage --test; then
  25     return 1
  26   fi
  27
  28   local bootdev="$(grub-probe --target=device /boot)" || true
  29   local loop_file=
  30   case $bootdev in
  31     /dev/loop/*|/dev/loop[0-9])
  32       loop_file="$(losetup "$bootdev" | sed -e "s/^[^(]*(\([^)]\+\)).*/\1/")"
  33       # If it's loop-mounted from another device, it isn't Wubi.
  34       case $loop_file in
  35         /dev/*) return 1 ;;
  36       esac
  37     ;;
  38     *) return 1 ;;
  39   esac
  40
  41   echo "$bootdev"
  42 }
  43
  44 # This only works on a Linux system with udev running.  This is probably the
  45 # vast majority of systems where we need any of this, though, and we fall
  46 # back reasonably gracefully if we don't have it.
  47 cached_available_ids=
  48 available_ids()
  49 {
  50   local id path
  51
  52   if [ "$cached_available_ids" ]; then
  53     echo "$cached_available_ids"
  54     return
  55   fi
  56
  57   [ -d /dev/disk/by-id ] || return
  58   cached_available_ids="$(
  59     for path in /dev/disk/by-id/*; do
  60       [ -e "$path" ] || continue
  61       printf '%s %s\n' "$path" "$(readlink -f "$path")"
  62     done | sort -k2 -s -u | cut -d' ' -f1
  63   )"
  64   echo "$cached_available_ids"
  65 }
  66
  67 # Returns non-zero and no output if no mapping can be found.
  68 device_to_id()
  69 {
  70   local id
  71   for id in $(available_ids); do
  72     if [ "$(readlink -f "$id")" = "$(readlink -f "$1")" ]; then
  73       echo "$id"
  74       return 0
  75     fi
  76   done
  77   # Fall back to the plain device name if there's no by-id link for it.
  78   if [ -e "$1" ]; then
  79     echo "$1"
  80     return 0
  81   fi
  82   return 1
  83 }
  84
  85 devices_to_ids()
  86 {
  87   local device id ids
  88   ids=
  89   for device; do
  90     id="$(device_to_id "$device" || true)"
  91     if [ "$id" ]; then
  92       ids="${ids:+$ids, }$id"
  93     fi
  94   done
  95   echo "$ids"
  96 }
  97
  98 all_disks()
  99 {
 100   local id
 101   for id in $(available_ids); do
 102     case $id in
 103       *-part*) ;;
 104       *) echo "$id" ;;
 105     esac
 106   done
 107 }
 108
 109 all_partitions()
 110 {
 111   local id ids
 112   ids=
 113   for id in $(available_ids); do
 114     if [ "$id" != "$1" ] && [ "${id%-part*}" = "$1" ]; then
 115       ids="${ids:+$ids }$id"
 116     fi
 117   done
 118   echo "$ids"
 119 }
 120
 121 # In order to determine whether we accidentally ran grub-install without
 122 # upgrade-from-grub-legacy on versions older than 1.98+20100617-1, we need
 123 # to be able to scan a disk to determine whether GRUB 2 was installed in its
 124 # boot sector.  This is specific to i386-pc (but that's the only platform
 125 # where we need it).
 126 scan_grub2()
 127 {
 128   if ! dd if="$1" bs=512 count=1 2>/dev/null | grep -aq GRUB; then
 129     # No version of GRUB is installed.
 130     return 1
 131   fi
 132
 133   # The GRUB boot sector always starts with a JMP instruction.
 134   initial_jmp="$(dd if="$1" bs=2 count=1 2>/dev/null | od -Ax -tx1 | \
 135                  head -n1 | cut -d' ' -f2,3)"
 136   [ "$initial_jmp" ] || return 1
 137   initial_jmp_opcode="${initial_jmp%% *}"
 138   [ "$initial_jmp_opcode" = eb ] || return 1
 139   initial_jmp_operand="${initial_jmp#* }"
 140   case $initial_jmp_operand in
 141     47|4b|4c|63)
 142       # I believe this covers all versions of GRUB 2 up to the package
 143       # version where we gained a more explicit mechanism.  GRUB Legacy
 144       # always had 48 here.
 145       return 0
 146     ;;
 147   esac
 148
 149   return 1
 150 }
 151
 152 # for Linux
 153 sysfs_size()
 154 {
 155   local num_sectors sector_size size
 156   # Try to find out the size without relying on a partitioning tool being
 157   # installed. This isn't too hard on Linux 2.6 with sysfs, but we have to
 158   # try a couple of variants on detection of the sector size.
 159   if [ -e "$1/size" ]; then
 160     num_sectors="$(cat "$1/size")"
 161     sector_size=512
 162     if [ -e "$1/queue/logical_block_size" ]; then
 163       sector_size="$(cat "$1/queue/logical_block_size")"
 164     elif [ -e "$1/queue/hw_sector_size" ]; then
 165       sector_size="$(cat "$1/queue/hw_sector_size")"
 166     fi
 167     size="$(expr "$num_sectors" \* "$sector_size" / 1000 / 1000)"
 168   fi
 169   [ "$size" ] || size='???'
 170   echo "$size"
 171 }
 172
 173 # for kFreeBSD
 174 camcontrol_size()
 175 {
 176   local num_sectors sector_size size=
 177
 178   if num_sectors="$(camcontrol readcap "$1" -q -s -N)"; then
 179     sector_size="$(camcontrol readcap "$1" -q -b)"
 180     size="$(expr "$num_sectors" \* "$sector_size" / 1000 / 1000)"
 181   fi
 182
 183   [ "$size" ] || size='???'
 184   echo "$size"
 185 }
 186
 187 maybe_udevadm()
 188 {
 189   if which udevadm >/dev/null 2>&1; then
 190     udevadm "$@" || true
 191   fi
 192 }
 193
 194 # Returns value in $RET, like a debconf command.
 195 describe_disk()
 196 {
 197   local disk id sysfs_path disk_basename size model
 198   disk="$1"
 199   id="$2"
 200
 201   model=
 202   case $(uname -s) in
 203     Linux)
 204       sysfs_path="$(maybe_udevadm info -n "$disk" -q path)"
 205       if [ -z "$sysfs_path" ]; then
 206         sysfs_path="/block/$(printf %s "${disk#/dev/}" | sed 's,/,!,g')"
 207       fi
 208       size="$(sysfs_size "/sys$sysfs_path")"
 209
 210       model="$(maybe_udevadm info -n "$disk" -q property | sed -n 's/^ID_MODEL=//p')"
 211       if [ -z "$model" ]; then
 212         model="$(maybe_udevadm info -n "$disk" -q property | sed -n 's/^DM_NAME=//p')"
 213         if [ -z "$model" ]; then
 214           model="$(maybe_udevadm info -n "$disk" -q property | sed -n 's/^MD_NAME=//p')"
 215           if [ -z "$model" ] && which dmsetup >/dev/null 2>&1; then
 216             model="$(dmsetup info -c --noheadings -o name "$disk" 2>/dev/null || true)"
 217           fi
 218         fi
 219       fi
 220     ;;
 221     GNU/kFreeBSD)
 222       disk_basename=$(basename "$disk")
 223       size="$(camcontrol_size "$disk_basename")"
 224       model="$(camcontrol inquiry "$disk_basename" | sed -ne "s/^pass0: <\([^>]*\)>.*/\1/p")"
 225     ;;
 226   esac
 227
 228   [ "$model" ] || model='???'
 229
 230   db_subst grub-pc/disk_description DEVICE "$disk"
 231   db_subst grub-pc/disk_description SIZE "$size"
 232   db_subst grub-pc/disk_description MODEL "$model"
 233   db_metaget grub-pc/disk_description description
 234 }
 235
 236 # Returns value in $RET, like a debconf command.
 237 describe_partition()
 238 {
 239   local disk part id path sysfs_path diskbase partbase size
 240   disk="$1"
 241   part="$2"
 242   id="$3"
 243   path="$4"
 244
 245   sysfs_path="$(maybe_udevadm info -n "$part" -q path)"
 246   if [ -z "$sysfs_path" ]; then
 247     diskbase="${disk#/dev/}"
 248     diskbase="$(printf %s "$diskbase" | sed 's,/,!,g')"
 249     partbase="${part#/dev/}"
 250     partbase="$(printf %s "$partbase" | sed 's,/,!,g')"
 251     sysfs_path="/block/$diskbase/$partbase"
 252   fi
 253   size="$(sysfs_size "/sys$sysfs_path")"
 254
 255   db_subst grub-pc/partition_description DEVICE "$part"
 256   db_subst grub-pc/partition_description SIZE "$size"
 257   db_subst grub-pc/partition_description PATH "$path"
 258   db_metaget grub-pc/partition_description description
 259 }
 260
 261 usable_partitions()
 262 {
 263   local last_partition path partition partition_id
 264
 265   last_partition=
 266   for path in / /boot /boot/grub; do
 267     partition="$(grub-probe -t device "$path" || true)"
 268     if [ -z "$partition" ] || [ "$partition" = "$last_partition" ]; then
 269       continue
 270     fi
 271     partition_id="$(device_to_id "$partition" || true)"
 272     echo "$path:$partition_id"
 273     last_partition="$partition"
 274   done | sort -t: -k2
 275 }
 276
 277 get_mountpoint()
 278 {
 279   local relpath boot_mountpoint
 280
 281   relpath="$(grub-mkrelpath "$1")"
 282   boot_mountpoint="${1#$relpath}"
 283   echo "${boot_mountpoint:-/}"
 284 }
 285
 286 config_item()
 287 {
 288   for x in /etc/default/grub /etc/default/grub.d/*.cfg; do
 289     if [ -e "$x" ]; then
 290       . "$x"
 291     fi
 292   done
 293   if [ "$(eval echo "\${$1+set}")" = set ]; then
 294     eval echo "\$$1"
 295   else
 296     return
 297   fi
 298 }
 299
 300 running_in_container()
 301 {
 302   type systemd-detect-virt >/dev/null 2>&1 && systemd-detect-virt --quiet --container
 303 }
 304
 305 no_nvram_arg() {
 306     db_get grub2/update_nvram
 307     if [ "$RET" = false ]; then
 308         echo "--no-nvram"
 309     fi
 310 }
 311
 312 run_grub_install()
 313 {
 314     if ! grub-install $@ ; then
 315         echo "Failed: grub-install $@" >&2
 316         echo "WARNING: Bootloader is not properly installed, system may not be bootable" >&2
 317     fi
 318 }
 319
 320 case "$1" in
 321   configure)
 322     . /usr/share/debconf/confmodule
 323
 324     devicemap_regenerated=
 325
 326     if egrep -q '^[[:space:]]*post(inst|rm)_hook[[:space:]]*=[[:space:]]*(/sbin/|/usr/sbin/)?update-grub' /etc/kernel-img.conf 2>/dev/null; then
 327       echo 'Removing update-grub hooks from /etc/kernel-img.conf in favour of' >&2
 328       echo '/etc/kernel/ hooks.' >&2
 329       sed -ri /etc/kernel-img.conf -e '\%^[[:space:]]*post(inst|rm)_hook[[:space:]]*=[[:space:]]*(/sbin/|/usr/sbin/)?update-grub%d'
 330     fi
 331
 332     mkdir -p /boot/grub
 333
 334     case @PACKAGE@ in
 335       grub-pc)
 336         if test -e /boot/grub/device.map && ! test -e /boot/grub/core.img && \
 337            ! test -e /boot/grub/@FIRST_CPU_PLATFORM@/core.img; then
 338           # Looks like your device.map was generated by GRUB Legacy, which
 339           # used to generate broken device.map (see #422851).  Avoid the risk
 340           # by regenerating it.
 341           grub-mkdevicemap --no-floppy
 342           devicemap_regenerated=1
 343         fi
 344       ;;
 345     esac
 346
 347     if test -z "$devicemap_regenerated" && test -s /boot/grub/device.map && \
 348        dpkg --compare-versions "$2" lt-nl 1.98+20100702-1 && \
 349        test "$(uname -s)" = Linux; then
 350       # Earlier versions of GRUB used unstable device names in device.map,
 351       # which caused a variety of problems.  There is some risk associated with
 352       # regenerating it (so we prompt the user if it's non-trivial), but on the
 353       # whole it's less risky to move to /dev/disk/by-id/.
 354       devicemap_lines="$(egrep -v '^[[:space:]]+#' /boot/grub/device.map | wc -l)"
 355       grub-mkdevicemap --no-floppy
 356       devicemap_regenerated=1
 357       if test "$devicemap_lines" != 1; then
 358         db_input critical grub2/device_map_regenerated || true
 359         db_go || true
 360       fi
 361     fi
 362
 363     if test -z "$devicemap_regenerated" && \
 364        dpkg --compare-versions "$2" lt-nl 1.99~20101210-2 && \
 365        grep -qs /md-uuid- /boot/grub/device.map; then
 366       echo "Removing MD devices from device.map, since the BIOS cannot read from these." >&2
 367       sed -i '/\/md-uuid-/d' /boot/grub/device.map
 368     fi
 369
 370     tmp_default_grub="$(mktemp -t grub.XXXXXXXXXX)"
 371     trap "rm -f ${tmp_default_grub}" EXIT
 372     cp -p /usr/share/grub/default/grub ${tmp_default_grub}
 373
 374     merge_debconf_into_conf "$tmp_default_grub" GRUB_CMDLINE_LINUX grub2/linux_cmdline
 375     merge_debconf_into_conf "$tmp_default_grub" GRUB_CMDLINE_LINUX_DEFAULT grub2/linux_cmdline_default
 376
 377     case @PACKAGE@ in
 378       grub-pc)
 379         merge_debconf_into_conf "$tmp_default_grub" GRUB_TIMEOUT grub-pc/timeout
 380         sed -i -e 's/^\(GRUB_TIMEOUT=\)"\([0-9][0-9]*\)"/\1\2/' "$tmp_default_grub"
 381         db_get grub-pc/hidden_timeout
 382         if [ "$RET" = false ]; then
 383           sed -i -e 's/^GRUB_HIDDEN_TIMEOUT=/#&/' "$tmp_default_grub"
 384         fi
 385       ;;
 386     esac
 387
 388     # If the template configuration file hasn't changed, then no conflict is
 389     # possible.  ucf can't figure this out for itself since we apply
 390     # debconf-based customisations on top of the template configuration
 391     # file.
 392     if [ -e /var/lib/grub/ucf/grub.previous ] && \
 393        cmp -s /usr/share/grub/default/grub /var/lib/grub/ucf/grub.previous; then
 394       ucf_env=UCF_FORCE_CONFFOLD=1
 395     else
 396       ucf_env=
 397     fi
 398
 399     env $ucf_env ucf --three-way --debconf-ok --sum-file=/usr/share/grub/default/grub.md5sum "$tmp_default_grub" /etc/default/grub
 400     cp -a /usr/share/grub/default/grub /var/lib/grub/ucf/grub.previous
 401     package="$(ucfq --with-colons /etc/default/grub | cut -d : -f 2)"
 402     if echo $package | grep -q "^grub-" ; then
 403       ucfr --force @PACKAGE@ /etc/default/grub
 404     else
 405       ucfr @PACKAGE@ /etc/default/grub
 406     fi
 407
 408     case @PACKAGE@ in
 409       grub-pc)
 410
 411         fix_mixed_system=
 412         if test -e /boot/grub/stage2 && test -e /boot/grub/menu.lst && \
 413            ! test -e /boot/grub/grub2-installed && \
 414            test -z "$UPGRADE_FROM_GRUB_LEGACY"; then
 415           # Unfortunately, it's still possible that the user upgraded fully
 416           # to GRUB 2 in some way other than running
 417           # upgrade-from-grub-legacy; perhaps they ran grub-install by hand
 418           # for some reason.  It's really quite difficult to detect this
 419           # situation, because the only difference between this and a
 420           # working chainloaded setup is that in this case grub-setup has
 421           # been run.  So, to try to tell the difference, we scan the boot
 422           # sectors of all disks for a GRUB 2 boot sector.  Hopefully this
 423           # won't cause too much to explode, since I can't think of a better
 424           # method.
 425           grub2_disks=
 426           for disk in $(all_disks); do
 427             if scan_grub2 "$disk"; then
 428               grub2_disks="${grub2_disks:+$grub2_disks }$(readlink -f "$disk")"
 429             fi
 430           done
 431           if [ "$grub2_disks" ]; then
 432             # No || true here; it's vital that the user sees this, and it's
 433             # better to throw an error than to do the wrong thing.
 434             db_subst grub-pc/mixed_legacy_and_grub2 DISKS "$grub2_disks"
 435             db_fset grub-pc/mixed_legacy_and_grub2 seen false
 436             db_input critical grub-pc/mixed_legacy_and_grub2
 437             db_go
 438             db_get grub-pc/mixed_legacy_and_grub2
 439             if [ "$RET" = true ]; then
 440               db_reset grub-pc/install_devices
 441               UPGRADE_FROM_GRUB_LEGACY=1
 442               fix_mixed_system=1
 443               # Fall through to normal installation logic.
 444             fi
 445           fi
 446         fi
 447
 448         # Make sure that Wubi users never see confusing device prompts.
 449         # Wubi is a very specialised hack that does complicated things with
 450         # grub-install diversions to create an image that's chained from the
 451         # Windows boot loader to boot an operating system from a file on a
 452         # Windows file system.  In these circumstances, prompting for where
 453         # to install GRUB is not going to help anyone.
 454         wubi_device="$(get_wubi_device)" || true
 455         if [ "$wubi_device" ]; then
 456           db_set grub-pc/install_devices "$wubi_device"
 457           db_fset grub-pc/install_devices seen true
 458         fi
 459
 460         if test -e /boot/grub/stage2 && test -e /boot/grub/menu.lst && \
 461            ! test -e /boot/grub/grub2-installed && \
 462            test -z "$UPGRADE_FROM_GRUB_LEGACY"; then
 463           db_get grub-pc/chainload_from_menu.lst
 464           if $RET ; then
 465             # Create core.img (but do not risk writing to MBR).
 466             # Using grub-probe instead of "(hd0)" avoids (UUID=) hack slowness
 467             # in case /boot/grub is not on (hd0) in device.map.
 468             echo "Generating core.img" >&2
 469             grub-install --target=i386-pc --no-floppy --grub-setup=/bin/true "$(grub-probe -t drive /boot/grub)" > /dev/null
 470
 471             # Update menu.lst to reflect that:
 472             # - core.img is present now
 473             # - core.img has to be the first option
 474             echo "Saving menu.lst backup in /boot/grub/menu.lst_backup_by_grub2_postinst" >&2
 475             cp /boot/grub/menu.lst{,_backup_by_grub2_postinst}
 476             echo "Running update-grub Legacy to hook our core.img in it" >&2
 477             LET_US_TRY_GRUB_2=true /usr/lib/grub-legacy/update-grub 2>&1 | sed -e "s/^/    /g" >&2
 478             # We just hooked GRUB 2 in menu.lst; then also generate grub.cfg.
 479             touch /boot/grub/grub.cfg
 480           fi
 481         elif running_in_container; then
 482           # Skip grub-install in containers.
 483           :
 484         elif test -z "$2" || test -e /boot/grub/core.img || \
 485              test -e /boot/grub/@FIRST_CPU_PLATFORM@/core.img || \
 486              test "$UPGRADE_FROM_GRUB_LEGACY" || test "$wubi_device"; then
 487           question=grub-pc/install_devices
 488           priority=high
 489           device_map="$(grub-mkdevicemap -m - | grep -v '^(fd[0-9]\+)' || true)"
 490           devices="$(echo "$device_map" | cut -f2)"
 491           if dpkg --compare-versions "$2" lt 1.98+20100702-1 && \
 492              test "$(uname -s)" = Linux && [ -z "$wubi_device" ]; then
 493             # Migrate to new by-id naming scheme.
 494             db_get grub-pc/install_devices
 495             old_devices="$(echo "$RET" | sed 's/, / /g')"
 496             new_devices=
 497             # Common-case optimisation: if the list of devices is
 498             # identical to the LHS of grub-mkdevicemap's output, then
 499             # there's no point asking again; just install to all disks.
 500             # (This handles e.g. "(hd0)" with one disk.)
 501             if [ "$(echo "$device_map" | cut -f1 | sort)" = \
 502                  "$(echo "$old_devices" | xargs -n1 | sort)" ]; then
 503               new_devices="$(devices_to_ids $devices)"
 504               db_set grub-pc/install_devices "$new_devices"
 505             # Alternatively, we might be installing to a single partition
 506             # on a single disk, and we can deal with that too if there's
 507             # only one available disk and it has an appropriate partition.
 508             # This doesn't necessarily work for multiple disks because now
 509             # the order matters.
 510             elif [ "$(echo "$device_map" | wc -l)" = 1 ] && \
 511                  [ "$(echo "$old_devices" | wc -w)" = 1 ] && \
 512                  echo "$old_devices" | grep -q ,; then
 513               old_device="${old_devices#(}"
 514               old_device="${old_device%)}"
 515               old_disk="${old_device%,*}"
 516               old_partition="${old_device##*,}"
 517               new_device="$(echo "$device_map" | grep "^($old_disk)" | \
 518                             cut -f2)"
 519               new_device="$(device_to_id $new_device)"
 520               if [ "$new_device" ]; then
 521                 new_device="$new_device-part$old_partition"
 522                 # Run through device_to_id again to check for existence.
 523                 new_device="$(device_to_id $new_device)"
 524               fi
 525               if [ "$new_device" ]; then
 526                 new_devices="$new_device"
 527                 db_set grub-pc/install_devices "$new_device"
 528               fi
 529             fi
 530             if [ -z "$new_devices" ]; then
 531               new_devices="$(devices_to_ids $old_devices)"
 532               db_set grub-pc/install_devices "$new_devices"
 533               # Common-case optimisation: if all devices are translatable
 534               # to by-id and the number of devices there is the same as
 535               # the number of devices GRUB can see, then there's no point
 536               # asking again.  (This handles e.g. "/dev/sda" with one
 537               # disk.)
 538               old_devices_count="$(echo "$old_devices" | wc -w)"
 539               new_devices_count="$(echo "$new_devices" | wc -w)"
 540               devices_count="$(echo "$devices" | wc -w)"
 541               if [ "$old_devices_count" != "$new_devices_count" ] || \
 542                  [ "$new_devices_count" != "$devices_count" ]; then
 543                 db_fset grub-pc/install_devices seen false
 544                 db_fset grub-pc/install_devices_empty seen false
 545               fi
 546             fi
 547           else
 548             db_get grub-pc/install_devices
 549             valid=1
 550             for device in $RET; do
 551               if [ ! -e "${device%,}" ]; then
 552                 valid=0
 553                 break
 554               fi
 555             done
 556             if [ "$valid" = 0 ]; then
 557               question=grub-pc/install_devices_disks_changed
 558               priority=critical
 559               db_set "$question" "$RET"
 560               db_fset "$question" seen false
 561               db_fset grub-pc/install_devices_empty seen false
 562             fi
 563           fi
 564
 565           while :; do
 566             ids=
 567             descriptions=
 568             partitions="$(usable_partitions)"
 569             for device in $devices; do
 570               disk_id="$(device_to_id "$device" || true)"
 571               if [ "$disk_id" ]; then
 572                 ids="${ids:+$ids, }$disk_id"
 573                 describe_disk "$(readlink -f "$device")" "$disk_id"
 574                 RET="$(printf %s "$RET" | sed 's/,/\\,/g')"
 575                 descriptions="${descriptions:+$descriptions, }$RET"
 576                 for partition_pair in $partitions; do
 577                   partition_id="${partition_pair#*:}"
 578                   if [ "${partition_id#$disk_id-part}" != "$partition_id" ]; then
 579                     ids="${ids:+$ids, }$partition_id"
 580                     describe_partition "$(readlink -f "$device")" "$(readlink -f "$partition_id")" "$partition_id" "$(get_mountpoint "${partition_pair%%:*}")"
 581                     RET="$(printf %s "$RET" | sed 's/,/\\,/g')"
 582                     descriptions="${descriptions:+$descriptions, }$RET"
 583                   fi
 584                 done
 585               fi
 586             done
 587             # Some "partitions" may in fact be at the disk level, e.g. RAID.
 588             # List these as well if they haven't already been listed.
 589             for partition_pair in $partitions; do
 590               partition_id="${partition_pair#*:}"
 591               if [ "${partition_id#*-part}" = "$partition_id" ]; then
 592                 case ", $ids, " in
 593                   ", $partition_id, ") ;;
 594                   *)
 595                     ids="${ids:+$ids, }$partition_id"
 596                     describe_disk "$(readlink -f "$partition_id")" "$partition_id"
 597                     RET="$(printf %s "$RET" | sed 's/,/\\,/g')"
 598                     descriptions="${descriptions:+$descriptions, }$RET"
 599                     ;;
 600                 esac
 601               fi
 602             done
 603             db_subst "$question" RAW_CHOICES "$ids"
 604             db_subst "$question" CHOICES "$descriptions"
 605             db_input "$priority" "$question" || true
 606             db_go
 607             db_get "$question"
 608             failed_devices=
 609             for i in `echo $RET | sed -e 's/, / /g'` ; do
 610               real_device="$(readlink -f "$i")"
 611               if grub-install --target=i386-pc --force --no-floppy $real_device ; then
 612                 # We just installed GRUB 2; then also generate grub.cfg.
 613                 touch /boot/grub/grub.cfg
 614               else
 615                 failed_devices="$failed_devices $real_device"
 616               fi
 617             done
 618
 619             if [ "$question" != grub-pc/install_devices ]; then
 620               db_set grub-pc/install_devices "$RET"
 621               db_fset grub-pc/install_devices seen true
 622             fi
 623
 624             if [ "$failed_devices" ]; then
 625               if [ "$UPGRADE_FROM_GRUB_LEGACY" ]; then
 626                 db_subst grub-pc/install_devices_failed_upgrade FAILED_DEVICES "$failed_devices"
 627                 db_fset grub-pc/install_devices_failed_upgrade seen false
 628                 if db_input critical grub-pc/install_devices_failed_upgrade; then
 629                   db_go
 630                   db_get grub-pc/install_devices_failed_upgrade
 631                   if [ "$RET" = true ]; then
 632                     db_fset "$question" seen false
 633                     db_fset grub-pc/install_devices_failed_upgrade seen false
 634                     continue
 635                   else
 636                     exit 1
 637                   fi
 638                 else
 639                   exit 1 # noninteractive
 640                 fi
 641               else
 642                 db_subst grub-pc/install_devices_failed FAILED_DEVICES "$failed_devices"
 643                 db_fset grub-pc/install_devices_failed seen false
 644                 if db_input critical grub-pc/install_devices_failed; then
 645                   db_go
 646                   db_get grub-pc/install_devices_failed
 647                   if [ "$RET" = true ]; then
 648                     break
 649                   else
 650                     db_fset "$question" seen false
 651                     db_fset grub-pc/install_devices_failed seen false
 652                     continue
 653                   fi
 654                 else
 655                   break # noninteractive
 656                 fi
 657               fi
 658             fi
 659
 660             db_get grub-pc/install_devices
 661             if [ -z "$RET" ]; then
 662               # Reset the seen flag if the current answer is false, since
 663               # otherwise we'll loop with no indication of why.
 664               db_get grub-pc/install_devices_empty
 665               if [ "$RET" = false ]; then
 666                 db_fset grub-pc/install_devices_empty seen false
 667               fi
 668               if db_input critical grub-pc/install_devices_empty; then
 669                 db_go
 670                 db_get grub-pc/install_devices_empty
 671                 if [ "$RET" = true ]; then
 672                   break
 673                 else
 674                   db_fset "$question" seen false
 675                   db_fset grub-pc/install_devices_empty seen false
 676                 fi
 677               else
 678                 break # noninteractive
 679               fi
 680             else
 681               break
 682             fi
 683           done
 684         fi
 685
 686         # /boot/grub/ has more chances of being accessible by GRUB
 687         for i in /usr/share/grub/unicode.pf2 ; do
 688           if test -e $i ; then
 689             cp $i /boot/grub/
 690           fi
 691         done
 692
 693         if [ "$fix_mixed_system" ]; then
 694           # These never contain any valuable information, and they aren't
 695           # useful for boot any more, since we just overwrote MBR/PBR.
 696           rm -f /boot/grub/{{xfs,reiserfs,e2fs,fat,jfs,minix}_stage1_5,stage{1,2}}
 697           # Remove marker file used to indicate that grub-install was run
 698           # rather than upgrade-from-grub-legacy.  Since stage2 has been
 699           # removed, we don't need this any more.
 700           rm -f /boot/grub/grub2-installed
 701         fi
 702       ;;
 703
 704       grub-efi-ia32|grub-efi-amd64|grub-efi-ia64|grub-efi-arm|grub-efi-arm64)
 705         bootloader_id="$(config_item GRUB_DISTRIBUTOR | tr A-Z a-z | \
 706                          cut -d' ' -f1)"
 707         case $bootloader_id in
 708           kubuntu) bootloader_id=ubuntu ;;
 709         esac
 710         if [ "$bootloader_id" ] && [ -d "/boot/efi/EFI/$bootloader_id" ]; then
 711           case @PACKAGE@ in
 712             grub-efi-ia32)  target=i386-efi ;;
 713             grub-efi-amd64) target=x86_64-efi ;;
 714             grub-efi-ia64)  target=ia64-efi ;;
 715             grub-efi-arm)   target=arm-efi ;;
 716             grub-efi-arm64) target=arm64-efi ;;
 717           esac
 718           db_get grub2/force_efi_extra_removable
 719           if [ "$RET" = true ]; then
 720             FORCE_EXTRA_REMOVABLE="--force-extra-removable"
 721           fi
 722           NO_NVRAM="$(no_nvram_arg)"
 723           run_grub_install --target="$target" "$FORCE_EXTRA_REMOVABLE" "$NO_NVRAM"
 724         fi
 725
 726         # /boot/grub/ has more chances of being accessible by GRUB
 727         for i in /usr/share/grub/unicode.pf2 ; do
 728           if test -e $i ; then
 729             cp $i /boot/grub/
 730           fi
 731         done
 732
 733         if type update-secureboot-policy >/dev/null 2>&1; then
 734           update-secureboot-policy || true
 735         fi
 736       ;;
 737
 738       grub-ieee1275)
 739         case $(dpkg --print-architecture) in
 740           powerpc|ppc64|ppc64el)
 741             # Output may be empty; if so, just update the core image but
 742             # don't install it to any PReP partition.
 743             prep_bootdev="$(/usr/lib/grub/powerpc-ieee1275/prep-bootdev)"
 744             NO_NVRAM="$(no_nvram_arg)"
 745             run_grub_install --target=powerpc-ieee1275 $prep_bootdev "$NO_NVRAM"
 746           ;;
 747         esac
 748       ;;
 749
 750       grub-yeeloong)
 751         run_grub_install --target=mipsel-loongson
 752       ;;
 753
 754       grub-xen)
 755         # Install for x86_64 regardless of arch, since a 32-bit userspace can still boot with a 64-bit kernel.
 756         mkdir -p /boot/xen
 757         run_grub_install --target=x86_64-xen
 758         case $(dpkg --print-architecture) in
 759           i386)
 760             run_grub_install --target=i386-xen
 761           ;;
 762         esac
 763         # Similarly, the PVH boot loader is usable regardless of arch.
 764         run_grub_install --target=i386-xen_pvh
 765       ;;
 766     esac
 767
 768     # If grub.cfg has been generated, update it.
 769     if test -e /boot/grub/grub.cfg && ! running_in_container; then
 770       update-grub 3>&-
 771     fi
 772   ;;
 773   abort-upgrade|abort-remove|abort-deconfigure)
 774   ;;
 775   *)
 776     echo "postinst called with unknown argument \`$1'" >&2
 777     exit 1
 778   ;;
 779 esac
 780
 781 # dh_installdeb will replace this with shell code automatically
 782 # generated by other debhelper scripts.
 783
 784 #DEBHELPER#
 785
 786 exit 0