archive/dragora-installer/parts/MenuBootloader

   1 #! /bin/bash -
   2 #
   3 # This file is part of the 'dragora-installer'.
   4 #
   5 # Purpose: Installation of GRUB boot loader into /media/dragora-root.
   6
   7 # Exit immediately on any error
   8 set -e
   9
  10 # Make sure to have /proc and /dev available to install GRUB
  11 if ! mountpoint -q /media/dragora-root/dev
  12 then
  13     mount --bind /dev /media/dragora-root/dev
  14 fi
  15 if ! mountpoint -q /media/dragora-root/proc
  16 then
  17     mount -t proc proc /media/dragora-root/proc
  18 fi
  19 if ! mountpoint -q /media/dragora-root/sys
  20 then
  21     mount -t sysfs sysfs /media/dragora-root/sys
  22 fi
  23
  24 # Loop for the main menu
  25 while true
  26 do
  27     dialog --colors \
  28      --backtitle "\ZbBoot loader installation" \
  29      --title "GRand Unified Bootloader" \
  30      --default-button "${_default_button:-ok}" \
  31      --ok-label "Install / Reinstall" \
  32      --cancel-label "Ignore & Continue" \
  33      --menu \
  34 "It's time to install a boot loader (GNU GRUB).\n\n\
  35 If you do not have a boot loader, it is recommended to install it in\n\
  36 the Master Boot Record (MBR).  It is possible to overwrite your current \
  37 boot loader.\n\n\
  38 You can also install the boot loader on the Root partition (superblock), \
  39 but note that the partition needs the boot flag to boot.  If you have not \
  40 used this flag before when you created the partitions you can do so later \
  41 by invoking 'cfdisk' or 'fdisk'." 19 72 2 \
  42      "0" "Install GRUB on the Master Boot Record" \
  43      "1" "Install GRUB on the Super block" \
  44      2> ${SUBTMPDIR}/return-MenuBootloader || _status=$?
  45     if test -n "$_status" && test $_status -gt 0
  46     then
  47         if test $_status -eq 1
  48         then
  49             # Ignore exit status on 'cancel'
  50             return 0
  51         fi
  52         # Any other dialogs code.
  53         return $_status
  54     fi
  55
  56     answer="$(cat -- ${SUBTMPDIR}/return-MenuBootloader)"
  57
  58     # Check for selected options
  59     case $answer in
  60     0 | 1) ## Master Boot Record or Super block
  61
  62         # Defining the title of the subsequent menu
  63         if test "$answer" = 0
  64         then
  65             _submenu_title="Master Boot Record"
  66         else
  67             _submenu_title="Super block"
  68         fi
  69
  70         # Check if it is a logical volume
  71         if pvs | grep -q dev
  72         then
  73             array=( $(pvs --ignorelockingfailure --noheadings | awk '{ print $1 }') )
  74
  75             # Verify on which partition to install
  76             if (( ${#array[*]} > 1 ))
  77             then
  78                 i=0 ; for partition in "${array[@]}"
  79                 do
  80                     partition="${partition/[0-9]*/}"
  81                     xlist[i++]=$partition
  82                     xlist[i++]=""
  83                 done
  84                 unset i partition
  85
  86                 # Remove possible duplicate elements
  87                 xlist=( $(echo "${xlist[@]}" | awk '!s[$0]++') )
  88
  89                 dialog --colors \
  90                  --backtitle "\ZbBoot loader installation" \
  91                  --title "$_submenu_title" \
  92                  --menu \
  93 "More than one disk or partition has been detected.\n\n\
  94 Please select the boot loader destination:" 0 0 0 "${xlist[@]}" \
  95                  2> ${SUBTMPDIR}/return-MenuBootloader_cases || continue;
  96                 BOOT_DEVICE="$(cat -- ${SUBTMPDIR}/return-MenuBootloader_cases)"
  97             else
  98                 BOOT_DEVICE="${array[0]}"
  99             fi
 100
 101             unset array
 102         fi
 103         unset _submenu_title
 104
 105         # To fallback if 'BOOT_DEVICE' is not defined, null
 106         BOOT_DEVICE="${BOOT_DEVICE:=$(cat -- ${SUBTMPDIR}/root_device)}"
 107
 108         # If the super block was not chosen, we don't need
 109         # the device number to install in the MBR
 110         if test "$answer" != 1
 111         then
 112             BOOT_DEVICE="${BOOT_DEVICE/[0-9]*/}"
 113         fi
 114         unset answer
 115
 116         # GRUB Installation
 117         dialog --colors \
 118          --backtitle "\ZbGRUB: Installing the boot loader" \
 119          --title "Installing GRUB on $BOOT_DEVICE" \
 120          --prgbox \
 121 "chroot /media/dragora-root /usr/sbin/grub-install --force $BOOT_DEVICE && echo \"^ Return status = $?\ " $(( $LINES - 8 )) $COLUMNS
 122
 123         # GRUB config file
 124         dialog --colors \
 125          --backtitle "\ZbGRUB: Generating configuration file" \
 126          --title "Generating grub.cfg" \
 127          --prgbox \
 128 "chroot /media/dragora-root /usr/sbin/grub-mkconfig -o /boot/grub/grub.cfg && echo \"^ Return status = $?\"" $(( $LINES - 8 )) $COLUMNS
 129
 130         unset BOOT_DEVICE
 131         _default_button=cancel
 132         continue;
 133         ;;
 134     esac
 135 done
 136