/usr/sbin/ocs-expand-gpt-pt

#!/bin/bash
# Author: Steven Shiau <steven _at_ nchc org tw>
# License: GPL
# A script to expand the GPT partition table by disk size ratio.
# ///NOTE/// This program only works for GPT partition table, not for MBR.

# Load DRBL setting and functions
DRBL_SCRIPT_PATH="${DRBL_SCRIPT_PATH:-/usr/share/drbl}"

. $DRBL_SCRIPT_PATH/sbin/drbl-conf-functions
. /etc/drbl/drbl-ocs.conf
. $DRBL_SCRIPT_PATH/sbin/ocs-functions

# Settings
# Flag to check target disk size before creating partition table
chk_tgt_disk_size_bf_mk_pt="yes"

#
cmd_name="$(basename $0)"
#
USAGE() {
    echo "$cmd_name: To create a proportional MBR partition table (not GPT) in a disk based on a existing partition table (sfdisk format)"
    echo "Usage:"
    echo "  $cmd_name [OPTION] PARTITION_TABLE_FILE TARGET_DEVICE"
    echo 
    echo "OPTION:"
    echo " -b, --batch     Run $cmd_name in batch mode, i.e. without any prompt or wait to press enter. VERY DANGEROUS!"
    echo "$cmd_name will honor experimental variable EXTRA_SFDISK_OPT and use it as the option for sfdisk."
    echo " -icds, --ignore-chk-dsk-size-pt  Skip checking destination disk size before creating the partition table on it. By default it will be checked and if the size is smaller than the source disk, quit."
    echo "Example:"
    echo "  To create a proportional partition table on disk /dev/sda based on /home/partimag/IMAGE/sda-pt.sf, use:"
    echo "$cmd_name /home/partimag/IMAGE/sda-pt.sf /dev/sda"
}         
          
# Parse command-line options
while [ $# -gt 0 ]; do
  case "$1" in
    -b|--batch)
            batch_mode="yes"
	    shift;;
    -icds|--ignore-chk-dsk-size-pt)
	    chk_tgt_disk_size_bf_mk_pt="no"
	    shift;;
    -*)     echo "${0}: ${1}: invalid option" >&2
            USAGE >& 2
            exit 2 ;;
    *)      break ;;
  esac
done

# Original sfdisk format file
orig_sf=$1   # orig_sf is like: /home/partimag/IMAGE/sda-pt.sf
target_disk=$2  # target_disk is like: /dev/sda

#
ask_and_load_lang_set $specified_lang

#
if [ -z "$orig_sf" ]; then
  [ "$BOOTUP" = "color" ] && $SETCOLOR_FAILURE
  echo "No source partition table file was assigned!"
  [ "$BOOTUP" = "color" ] && $SETCOLOR_NORMAL
  USAGE
  echo "$msg_program_stop!"
  exit 1
fi
if [ ! -f "$orig_sf" ]; then
  [ "$BOOTUP" = "color" ] && $SETCOLOR_FAILURE
  echo "Source partition table file \"$orig_sf\" was _NOT_ found"
  [ "$BOOTUP" = "color" ] && $SETCOLOR_NORMAL
  echo "$msg_program_stop!"
  exit 1
fi

if [ -z "$target_disk" ]; then
  [ "$BOOTUP" = "color" ] && $SETCOLOR_FAILURE
  echo "No target disk was assigned!"
  [ "$BOOTUP" = "color" ] && $SETCOLOR_NORMAL
  echo "$msg_program_stop!"
  USAGE
  exit 1
fi

#
if [ "$batch_mode" != "yes" ]; then
  [ "$BOOTUP" = "color" ] && $SETCOLOR_WARNING
  echo "This program will create a partition table in $target_disk"
  echo "ALL THE DATA IN THE TARGET DEVICE WILL BE ERASED!!!"
  [ "$BOOTUP" = "color" ] && $SETCOLOR_NORMAL
  echo -n "$msg_are_u_sure_u_want_to_continue ? (y/N) "
  read continue_confirm_ans
  case "$continue_confirm_ans" in
       y|Y|[yY][eE][sS])
          echo "$msg_ok_let_do_it!"
          ;;
       *)
          echo "$msg_program_stop!"
          exit 1
  esac
fi

# Check if GPT disk, if yes, exit
if `is_mbr_partitition_table_disk $target_disk`; then
  [ "$BOOTUP" = "color" ] && $SETCOLOR_FAILURE
  echo "Disk $target_disk is MBR format. This program only works for GPT format."
  [ "$BOOTUP" = "color" ] && $SETCOLOR_NORMAL
  echo "$msg_program_stop!"
  exit 1
fi

# Check if the format of sfdisk is created by sfdisk >= 2.26
if [ -z "$(LC_ALL=C grep -E "^label: gpt" $orig_sf)" ]; then
  [ "$BOOTUP" = "color" ] && $SETCOLOR_FAILURE
  echo "Partition table file \"$orig_sf\" does not contain GPT info."
  echo "Make sure it's GPT format and outputted by sfdisk >= 2.26."
  [ "$BOOTUP" = "color" ] && $SETCOLOR_NORMAL
  echo "$msg_program_stop!"
  exit 1
fi

# No size info in sda-pt.sf, we have to use sda-pt.parted.
orig_parted_tab="${orig_sf/.sf/.parted}"
orig_parted_dir="$(dirname $orig_sf)"
if [ ! -e "$orig_parted_tab" ]; then
  [ "$BOOTUP" = "color" ] && $SETCOLOR_FAILURE
  echo "$orig_parted_tab was not found! It is required so that we know the original disk size! Maybe your Clonezilla image is too old ? You can try to create such an file in your source machine by: \"parted -s /dev/$SOURCE_DEV unit s print > $orig_parted_tab\" (Replace $SOURCE_DEV with your device name)"
  [ "$BOOTUP" = "color" ] && $SETCOLOR_NORMAL
  echo "$msg_program_stop!"
  exit 1
fi

# parted output format example:
#  Disk /dev/sda: 16777215s
#  Sector size (logical/physical): 512B/512B
#  Partition Table: msdos
#  
#  Number  Start     End        Size       Type      File system  Flags
#   1      63s       586844s    586782s    primary                boot 
#   2      586845s   978074s    391230s    primary                     
#   3      978075s   1955204s   977130s    primary                     
#   4      1955205s  16776584s  14821380s  extended                    
#   5      1955268s  2151764s   196497s    logical                     
#   6      2151828s  2542994s   391167s    logical                     
#   7      2543058s  16776584s  14233527s  logical                     

ori_disk_size="$(LC_ALL=C grep -E "^Disk /dev" $orig_parted_tab | awk -F":" '{print $2}' | sed -e "s/s$//g")"
# If nothing in target disk, parted will show like this:
# sudo parted -s /dev/sda unit s print
# Error: Unable to open /dev/sda - unrecognised disk label.

if ! LC_ALL=C parted -s $target_disk unit s print &>/dev/null; then
  # Try to create a partition table so that we can read the size via parted -s $dev unit s print
  echo "No initial GPT table on disk $target_disk. Create one now by:" | tee --append $OCS_LOGFILE
  echo "parted -s $target_disk mklabel gpt" | tee --append $OCS_LOGFILE
  LC_ALL=C parted -s $target_disk mklabel gpt | tee --append $OCS_LOGFILE
fi
tgt_disk_size="$(LC_ALL=C parted -s $target_disk unit s print | grep -E "^Disk /dev" | awk -F":" '{print $2}' | sed -e "s/s$//g")"

#
ratio=$(echo "scale=10; $tgt_disk_size / $ori_disk_size" | bc -l) || exit 1
echo "The ratio for target disk size to original disk size is $ratio."
if [ "$chk_tgt_disk_size_bf_mk_pt" = "yes" ]; then
  if [ "$(LC_ALL=C echo "$ratio < 1" | bc -l)" = "1" ]; then
    [ "$BOOTUP" = "color" ] && $SETCOLOR_FAILURE
    echo "The target disk (size=$tgt_disk_size sectors) is smaller than the source disk (size=$ori_disk_size sectors)!"
    echo "Clonezilla won't be able to restore a partition image to smaller partition!" 
    [ "$BOOTUP" = "color" ] && $SETCOLOR_NORMAL
    echo "Program terminated!"
    exit 1
  fi
fi

new_sf="$(mktemp /tmp/new_sf.XXXXXX)" || exit 1
new_sf_tmp="$(mktemp /tmp/new_sf_tmp.XXXXXX)" || exit 1
# Increase. Example for sfdisk format:
# =====================================
# label: gpt
# label-id: ADC40CC4-77D7-4858-8F0E-8BC2447052AE
# device: /dev/sda
# unit: sectors
# first-lba: 34
# last-lba: 125829086
# 
# /dev/sda1 : start=        2048, size=      409600, type=C12A7328-F81F-11D2-BA4B-00A0C93EC93B, uuid=E8D785ED-A65F-4EA1-ADF0-CC61E75677EB
# /dev/sda2 : start=      411648, size=     1024000, type=EBD0A0A2-B9E5-4433-87C0-68B6B72699C7, uuid=AB72A495-4141-4500-AE48-B7AC492160B4
# /dev/sda3 : start=     1435648, size=    40505344, type=E6D6D379-F507-44C2-A23C-238F2A3DF928, uuid=C7A87C41-72FD-41DB-9B10-DF3568A4089D
# =====================================
# label: gpt
# label-id: D4165706-2FAD-491E-82CA-7866982D196B
# device: /dev/sda
# unit: sectors
# first-lba: 34
# last-lba: 125829086
# 
# /dev/sda1 : start=        2048, size=      614400, type=DE94BBA4-06D1-4D40-A16A-BFD50179D6AC, uuid=0802BFF4-2549-4CD4-A1CA-93D54AEE26F0, name="Basic data partition", attrs="RequiredPartiton GUID:63"
# /dev/sda2 : start=      616448, size=      202752, type=C12A7328-F81F-11D2-BA4B-00A0C93EC93B, uuid=C9C164D5-5E0F-476D-B2EA-A4D818A266CF, name="EFI system partition", attrs="GUID:63"
# /dev/sda3 : start=      819200, size=      262144, type=E3C9E316-0B5C-4DB8-817D-F92DF00215AE, uuid=15D5A869-5C6E-4F2C-B234-7D6B91B58555, name="Microsoft reserved partition", attrs="GUID:63"
# /dev/sda4 : start=     1081344, size=   124745728, type=EBD0A0A2-B9E5-4433-87C0-68B6B72699C7, uuid=E53DEA7E-2639-4AE9-9DFD-DDD2406C3EC0, name="Basic data partition"
# =====================================

# We only need those required info
grep -E "^/dev" $orig_sf > $new_sf_tmp
# start=291579750 or size=291563622 is not a good format for us to parse, we need a space between "=" and "number"
# i.e. 
# No good:
# /dev/sda1 : start=       63, size=291563622, Id= 7, bootable
# /dev/sda2 : start=291579750, size= 20980890, Id= 7
# /dev/sda3 : start=        0, size=        0, Id= 0
# /dev/sda4 : start=        0, size=        0, Id= 0
# 
# Good:
# /dev/sda1 : start=       63, size= 291563622, Id= 7, bootable
# /dev/sda2 : start= 291579750, size= 20980890, Id= 7
# /dev/sda3 : start=        0, size=        0, Id= 0
# /dev/sda4 : start=        0, size=        0, Id= 0

# //NOTE// For partitions number >=10, it looks like:
# label: gpt
# label-id: 56C0DC13-942C-493F-B141-F9903658453B
# device: /dev/sda
# unit: sectors
# first-lba: 34
# last-lba: 125829086
# 
# /dev/sda1 : start=        2048, size=     2097152, type=0FC63DAF-8483-4772-8E79-3D69D8477DE4, uuid=4F5FF221-D350-4CE7-BADA-20022DA453CC, name="Linux filesystem"
# /dev/sda2 : start=     2099200, size=     2097152, type=0FC63DAF-8483-4772-8E79-3D69D8477DE4, uuid=975A9722-E2ED-46CC-B0E1-995095A6BB66, name="Linux filesystem"
# /dev/sda3 : start=     4196352, size=     2097152, type=0FC63DAF-8483-4772-8E79-3D69D8477DE4, uuid=A27C9E16-70B1-48D0-9A3F-915AFBA8FCC7, name="Linux filesystem"
# /dev/sda4 : start=     6293504, size=     2097152, type=0FC63DAF-8483-4772-8E79-3D69D8477DE4, uuid=3E134963-5B14-49C1-9F83-9BAF9C5F61C9, name="Linux filesystem"
# /dev/sda5 : start=     8390656, size=     2097152, type=0FC63DAF-8483-4772-8E79-3D69D8477DE4, uuid=FB1FB744-E6DC-48FA-9891-256AD0F3CF7C, name="Linux filesystem"
# /dev/sda6 : start=    10487808, size=     2097152, type=0FC63DAF-8483-4772-8E79-3D69D8477DE4, uuid=BB764A64-35BF-4415-A8D6-84642339FB3F, name="Linux filesystem"
# /dev/sda7 : start=    12584960, size=     2097152, type=0FC63DAF-8483-4772-8E79-3D69D8477DE4, uuid=B0D77252-85AB-4AFB-8866-38C21605DB7B, name="Linux filesystem"
# /dev/sda8 : start=    14682112, size=     2097152, type=0FC63DAF-8483-4772-8E79-3D69D8477DE4, uuid=79E8897A-B821-4C5D-A481-5F8628C57D2E, name="Linux filesystem"
# /dev/sda9 : start=    16779264, size=     2097152, type=0FC63DAF-8483-4772-8E79-3D69D8477DE4, uuid=2CA8A44E-9A2B-475A-BFC8-1E6295847F6A, name="Linux filesystem"
# /dev/sda10 : start=    18876416, size=     2097152, type=0FC63DAF-8483-4772-8E79-3D69D8477DE4, uuid=B454EC36-562F-4844-B8D9-28C5C1C111C9, name="Linux filesystem"
# /dev/sda11 : start=    20973568, size=   104855519, type=0FC63DAF-8483-4772-8E79-3D69D8477DE4, uuid=FA55D210-62EE-4948-A853-FDD4360CDCB5, name="Linux filesystem"

# Therefore we force to put a space no matter there is already space or not
perl -pi -e "s/start=/start= /g" $new_sf_tmp
perl -pi -e "s/size=/size= /g" $new_sf_tmp
# Remove ":" in the temp file, since it's only for parsing, won't be used for sfdisk /dev/... < $new_sf_tmp ...
perl -pi -e "s/://g" $new_sf_tmp

# Get the line number of "last-lba:"
header_line="$(LC_ALL=C grep -E -n "^last-lba:" $orig_sf | awk -F":" '{print $1}')"
if [ -z "$header_line" ]; then
  [ "$BOOTUP" = "color" ] && $SETCOLOR_FAILURE
  echo "Failed to find the line \"last-lba:\" in $orig_sf!"
  [ "$BOOTUP" = "color" ] && $SETCOLOR_NORMAL
  echo "$msg_program_stop!"
  exit 1
fi
# We do not output the line "last-lba:" in the generated line. Otherwise we have to calculate the last-lba number.
LC_ALL=C head -n "$((header_line -1))" $orig_sf > $new_sf
echo "" >> $new_sf
start_no_keep=""
size_no_keep=""
append_to_next="0"
# Initial gap for the 1st partition. After this, it should be 0.
logical_part_gap="2"
while read dev start start_no size size_no type uuid name attrs; do
  pt_no="$(LC_ALL=C get_part_number $dev | sed -r -e "s|^[^[:digit:]]*||g")"
  if `is_partition $dev` ; then
    [ -z "$start_no_keep" ] && start_no_keep=${start_no/,/}  # The 1st one
    [ -z "$size_no_keep" ] && size_no_keep=0
    if [ "${size_no/,/}" -eq 0 ]; then
      start_no=0
      size_no=0
    else
      # If we found the partition is EFI System partition, keep the size.
      # EFI System partition: C12A7328-F81F-11D2-BA4B-00A0C93EC93B,
      # Ref: https://en.wikipedia.org/wiki/GUID_Partition_Table
      expand="true"
      if [ -n "$(echo $type | grep -iE "type=C12A7328-F81F-11D2-BA4B-00A0C93EC93B")" ]; then
        expand="false"
        [ "$BOOTUP" = "color" ] && $SETCOLOR_WARNING
	echo "\"EFI System partition\" found. Not to expand this partition."
        [ "$BOOTUP" = "color" ] && $SETCOLOR_NORMAL
      fi
      # If we found the partition is MS Windows "system reserved partition", keep the size.
      # Microsoft Reserved Partition (MSR): 	E3C9E316-0B5C-4DB8-817D-F92DF00215AE
      # Ref: https://en.wikipedia.org/wiki/GUID_Partition_Table
      if [ -n "$(echo $type | grep -iE "type=E3C9E316-0B5C-4DB8-817D-F92DF00215AE")" ]; then
        expand="false"
        [ "$BOOTUP" = "color" ] && $SETCOLOR_WARNING
	echo "\"Microsoft Reserved Partition (MSR)\" found. Not to expand this partition."
        [ "$BOOTUP" = "color" ] && $SETCOLOR_NORMAL
      fi
      # If we found the partition is MS Windows "system reserved partition", keep the size.
      # Windows Recovery Environment 	DE94BBA4-06D1-4D40-A16A-BFD50179D6AC
      # Ref: https://en.wikipedia.org/wiki/GUID_Partition_Table
      if [ -n "$(echo $type | grep -iE "type=DE94BBA4-06D1-4D40-A16A-BFD50179D6AC")" ]; then
        expand="false"
        [ "$BOOTUP" = "color" ] && $SETCOLOR_WARNING
        echo "\"Windows Recovery Environment\" found. Not to expand this partition."
        [ "$BOOTUP" = "color" ] && $SETCOLOR_NORMAL
      fi
      # For newer Clonezilla (>=2.4.36-1drbl), a tag file (sda1.info) might exist
      if [ -e "$orig_parted_dir/$(to_filename ${dev}).info" ]; then
	. $orig_parted_dir/$(to_filename ${dev}).info
	if [ "$PARTITION_TYPE" = "Win_boot_reserved" ]; then
          expand="false"
	fi
      fi
      # For Linux Swap partition
      if [ -n "$(echo $type | grep -iE "type=0657FD6D-A4AB-43C4-84E5-0933C84B4F4F")" ]; then
        [ "$BOOTUP" = "color" ] && $SETCOLOR_WARNING
	echo "Linux swap partition \"$type\" found. Not to expand this partition."
        [ "$BOOTUP" = "color" ] && $SETCOLOR_NORMAL
        expand="false"
      fi

      if [ "$expand" = "true" ]; then
	start_no="$(LC_ALL=C printf "%.0f" "$(echo "($start_no_keep + $size_no_keep)" | bc -l)")"
	size_no="$(LC_ALL=C printf "%.0f" "$(echo "${size_no/,/}*$ratio + $append_to_next" | bc -l)")"
	# Reset the space append_to_next.
	append_to_next="0"
      else
	start_no="$(LC_ALL=C printf "%.0f" "$(echo "($start_no_keep + $size_no_keep)" | bc -l)")"
        size_no="${size_no/,/}"
	# Since we do not expand this "system reserved partition" or "swap partition", 
	# we append the space to the next partition.
	# It's possible that there are more than one partition which will be
	# kept as original size, e.g.
	# Number  Start   End    Size   File system  Name  Flags
	# 1      1049kB  106MB  105MB   EFI system partition          boot, esp
	# 2      106MB   240MB  134MB   Microsoft reserved partition  msftres
	# 3      240MB   128GB  128GB   Basic data partition          msftdata
	# In the above, partition 1 and 2 will not be expanded. Therefore we
	# might need to add the previous $append_to_next
	append_to_next="$(LC_ALL=C printf "%.0f" "$(echo "$append_to_next + ${size_no}*$ratio - ${size_no}" | bc -l)")"
      fi
    fi
    if [ "$size_no" -lt 0 ]; then
      # append_to_next might be nagtive when "-icds" is enabled and ration is < 1, therefore
      # we have to check the size_no.
      [ "$BOOTUP" = "color" ] && $SETCOLOR_FAILURE
      echo "The calculated size of $dev is < 0!"
      echo "Unable to create a smaller partitions layout."
      [ "$BOOTUP" = "color" ] && $SETCOLOR_NORMAL
      echo "$msg_program_stop!"
      exit 1
    fi
    echo $dev : $start $start_no, $size $size_no, $type $uuid $name $attrs >> $new_sf
    [ "$start_no" -ne 0 ] && start_no_keep="${start_no/,/}"
    [ "$size_no" -ne 0 ] && size_no_keep="${size_no/,/}"
  fi
done < $new_sf_tmp

echo "The partition table to write in $target_disk:"
echo "*****************************************"
cat $new_sf
echo "*****************************************"

# EXTRA_SFDISK_OPT is environment variable
# If not --force, we force to append it since by default if sfdisk find some CHS it does not like, it won't do it without --force
if [ -z "$(echo $EXTRA_SFDISK_OPT | grep -Ew -- "--force")" ]; then
  EXTRA_SFDISK_OPT="$EXTRA_SFDISK_OPT --force"
fi
echo "Running: sfdisk $EXTRA_SFDISK_OPT $target_disk < $new_sf"
LC_ALL=C sfdisk $EXTRA_SFDISK_OPT $target_disk < $new_sf
echo "Partition table was created by: sfdisk $EXTRA_SFDISK_OPT $target_disk < $new_sf"

# Use parted to fill the last partitition to the end of disk because
# there might be some resudial in the calculation.
# Thanks to Conan for this suggestion.
# Ref: https://sourceforge.net/p/clonezilla/discussion/
#      Clonezilla_live/thread/c5e92d87/?limit=25#080c
if [ -n "$(LC_ALL=C parted -h | grep -w resizepart)" ]; then
  # Find the last partition number.
  # Firstly we get the line number for "Number  Start   End     Size    
  # File system  Name  Flags"
  line_after="$(LC_ALL=C parted -s $target_disk print | \
  grep -n -Ew "^Number[[:space:]]+Start[[:space:]]+End.*" | \
  awk -F":" '{print $1}')"
  line_after="$((line_after +1))"
  last_part_no="$(LC_ALL=C parted -s $target_disk print | \
  tail -n +${line_after} | awk -F" " '{print $1}' | sort -V | tail -n 1)"
  if [ -n "$last_part_no" ]; then
    echo "Trying to extend the last partition to the end of disk by:"
    echo "parted -s $target_disk resizepart $last_part_no 100%"
    LC_ALL=C parted -s $target_disk resizepart $last_part_no 100%
  fi
fi

[ -e "$new_sf" ] && rm -f $new_sf
[ -e "$new_sf_tmp" ] && rm -f $new_sf_tmp
clonezilla 3.21.13-1 / usr / sbin / ocs-expand-gpt-pt
