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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 } # 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 which udevadm >/dev/null 2>&1; then udevadm "$@" || true fi } # Parse /proc/mounts and find out the mount for the given device. # The device must be a real device in /dev, not a symlink to one. get_mounted_device() { mountpoint="$1" cat /proc/mounts | while read -r line; do set -f set -- $line set +f if [ "$2" = "$mountpoint" ]; then echo "$1" break fi done } ############################################################################### # New or modified helpers ############################################################################### # Fixed: Return nothing if the argument is empty get_mountpoint() { local relpath boot_mountpoint if [ -z "$1" ]; then return fi relpath="$(grub-mkrelpath "$1")" boot_mountpoint="${1#$relpath}" echo "${boot_mountpoint:-/}" } # Returns value in $RET, like a debconf command. # # Merged version of describe_disk and describe_partition, as disks can't be # valid ESPs on their own, so we can't render them as an entry. describe_efi_system_partition() { local disk part id path sysfs_path diskbase partbase size local disk_basename disk_size model disk="$1" part="$2" id="$3" path="$4" # BEGIN: Stolen from describe_disk 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 disk_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 "$model" ] && which dmsetup >/dev/null 2>&1; then model="$(dmsetup info -c --noheadings -o name "$disk" 2>/dev/null || true)" fi fi fi ;; GNU/kFreeBSD) disk_basename=$(basename "$disk") disk_size="$(camcontrol_size "$disk_basename")" model="$(camcontrol inquiry "$disk_basename" | sed -ne "s/^pass0: <\([^>]*\)>.*/\1/p")" ;; esac [ "$model" ] || model='???' # END: Stolen from describe_disk sysfs_path="$(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-efi/partition_description DEVICE "$part" db_subst grub-efi/partition_description SIZE "$size" db_subst grub-efi/partition_description PATH "$path" db_subst grub-efi/partition_description DISK_MODEL "$model" db_subst grub-efi/partition_description DISK_SIZE "$disk_size" db_metaget grub-efi/partition_description description } # Parse /proc/mounts and find out the mount for the given device. # The device must be a real device in /dev, not a symlink to one. find_mount_point() { real_device="$1" cat /proc/mounts | while read -r line; do set -f set -- $line set +f if [ "$1" = "$real_device" -a "$3" = "vfat" ]; then echo "$2" break fi done } # Return all devices that are a valid ESP usable_efi_system_partitions() { local last_partition path partition partition_id local ID_PART_ENTRY_TYPE ID_PART_ENTRY_SCHEME last_partition= ( for partition in /dev/disk/by-id/*; do ID_PART_ENTRY_TYPE="" ID_PART_ENTRY_SCHEME="" eval "$(udevadm info -q property -n "$partition" | grep -E '^ID_PART_ENTRY_(TYPE|SCHEME)=')" if [ -z "$ID_PART_ENTRY_TYPE" -o -z "$ID_PART_ENTRY_SCHEME" -o \ \( "$ID_PART_ENTRY_SCHEME" != gpt -a "$ID_PART_ENTRY_SCHEME" != dos \) -o \ \( "$ID_PART_ENTRY_SCHEME" = gpt -a "$ID_PART_ENTRY_TYPE" != c12a7328-f81f-11d2-ba4b-00a0c93ec93b \) -o \ \( "$ID_PART_ENTRY_SCHEME" = dos -a "$ID_PART_ENTRY_TYPE" != 0xef \) ]; then continue fi # unify the partition id partition_id="$(device_to_id "$partition" || true)" real_device="$(readlink -f "$partition")" path="$(find_mount_point $real_device)" echo "$path:$partition_id" done ) | sort -t: -k2 -u } ############################################################################### # MAGIC SCRIPT ############################################################################### FALLBACK_MOUNTPOINT=/var/lib/grub/esp # Initial install/upgrade from /boot/efi? db_fget grub-efi/install_devices seen seen="$RET" # Get configured value question=grub-efi/install_devices priority=high db_get grub-efi/install_devices valid=1 # We either migrate /boot/efi over, or we check if we have invalid devices if [ -z "$RET" ] && [ "$seen" != "true" ]; then echo "Trying to migrate /boot/efi into esp config" esp="$(get_mounted_device /boot/efi)" if [ "$esp" ]; then esp="$(device_to_id "$esp")" fi if [ "$esp" ]; then db_set grub-efi/install_devices "$esp" db_fset grub-efi/install_devices seen true RET="$esp" fi else for device in $RET; do if [ ! -e "${device%,}" ]; then valid=0 break fi done fi # If /boot/efi points to a device that's not in the list, trigger the # install_devices_disks_changed prompt below, but add the device behind # /boot/efi to the defaults. boot_efi_device=$(get_mounted_device /boot/efi || true) if [ "$boot_efi_device" ]; then for device in $RET; do device="${device%,}" real_device="$(readlink -f "$device" || true)" if [ "$real_device" = "$boot_efi_device" ]; then boot_efi_device="" break fi done if [ "$boot_efi_device" ]; then boot_efi_device="$(device_to_id "$boot_efi_device" || true)" if [ "$RET" ]; then RET="$RET, $boot_efi_device" else RET="$boot_efi_device" fi valid=0 fi fi if [ "$valid" = 0 ]; then question=grub-efi/install_devices_disks_changed priority=critical db_set "$question" "$RET" db_fset "$question" seen false db_fset grub-efi/install_devices_empty seen false fi while :; do ids= descriptions= partitions="$(usable_efi_system_partitions)" for partition_pair in $partitions; do partition_id="${partition_pair#*:}" device="${partition_id%%-part*}" ids="${ids:+$ids, }$partition_id" describe_efi_system_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" done db_subst "$question" RAW_CHOICES "$ids" db_subst "$question" CHOICES "$descriptions" db_input "$priority" "$question" || true db_go db_get "$question" # Run the installer failed_devices= for i in `echo $RET | sed -e 's/, / /g'` ; do real_device="$(readlink -f "$i")" mntpoint=$(find_mount_point $real_device) if [ -z "$mntpoint" ]; then mntpoint=$FALLBACK_MOUNTPOINT mount $real_device $mntpoint fi echo "Installing grub to $mntpoint." >&2 if _UBUNTU_ALTERNATIVE_ESPS="$RET" grub-install --efi-directory=$mntpoint "$@" ; then # We just installed GRUB 2; then also generate grub.cfg. touch /boot/grub/grub.cfg else failed_devices="$failed_devices $real_device" fi if [ "$mntpoint" = "$FALLBACK_MOUNTPOINT" ]; then umount $mntpoint fi done if [ "$question" != grub-efi/install_devices ] && [ "$RET" ]; then # XXX cjwatson 2019-02-26: The description of # grub-efi/install_devices_disks_changed ought to explain that # selecting no devices will leave the configuration unchanged # so that you'll be prompted again next time, but it's a bit # close to the Debian 10 release to be introducing new # translatable text. For now, it should be sufficient to # avoid losing configuration data. db_set grub-efi/install_devices "$RET" db_fset grub-efi/install_devices seen true fi if [ "$failed_devices" ]; then db_subst grub-efi/install_devices_failed FAILED_DEVICES "$failed_devices" db_fset grub-efi/install_devices_failed seen false if db_input critical grub-efi/install_devices_failed; then db_go db_get grub-efi/install_devices_failed if [ "$RET" = true ]; then break else db_fset "$question" seen false db_fset grub-efi/install_devices_failed seen false continue fi else exit 1 # noninteractive 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-efi/install_devices_empty if [ "$RET" = false ]; then db_fset grub-efi/install_devices_empty seen false fi if db_input critical grub-efi/install_devices_empty; then db_go db_get grub-efi/install_devices_empty if [ "$RET" = true ]; then break else db_fset "$question" seen false db_fset grub-efi/install_devices_empty seen false fi else # if question was seen we are done # Otherwise, abort db_fget grub-efi/install_devices_empty seen if [ "$RET" = true ]; then break else exit 1 fi fi else break fi done