code.delx.au - monosys/blob - multiboot-setup.sh

   1 #!/bin/bash
   2
   3 set -eu
   4
   5 ISO_MNT="/mnt/iso"
   6 PARTITION_LABEL="multiboot"
   7 MULTIBOOT_MNT="/mnt/multiboot"
   8 GRUB_CFG="${MULTIBOOT_MNT}/grub/grub.cfg"
   9
  10 function cmd_format {
  11     if [ -z "${1:-}" ]; then
  12         echo "Usage: $0 format /dev/sdX"
  13         exit 1
  14     fi
  15     set -x
  16
  17     sudo -k
  18     DISK_DEVICE="$1"
  19     PARTITION_DEVICE="${DISK_DEVICE}1"
  20     echo -ne 'label: dos\ntype=c, bootable\n' | sudo sfdisk "$DISK_DEVICE"
  21     sudo mkfs.vfat -n "$PARTITION_LABEL" "$PARTITION_DEVICE"
  22 }
  23
  24 function cmd_bootloader {
  25     DISK_DEVICE="$(mount|grep /mnt/multiboot|cut -d' ' -f1|sed 's/[0-9]*$//')"
  26     set -x
  27
  28     sudo -k
  29     install_grub_bios
  30     install_grub_efi
  31     install_grub_cfg
  32 }
  33
  34 function install_grub_bios {
  35     sudo grub-install \
  36         --target=i386-pc \
  37         --boot-directory="$MULTIBOOT_MNT" \
  38         "$DISK_DEVICE"
  39 }
  40
  41 function install_grub_efi {
  42     sudo grub-install \
  43         --target=x86_64-efi \
  44         --no-nvram \
  45         --removable \
  46         --efi-directory="$MULTIBOOT_MNT" \
  47         --boot-directory="$MULTIBOOT_MNT" \
  48         "$DISK_DEVICE"
  49 }
  50
  51 function install_grub_cfg {
  52     mkdir -p "$(dirname "$GRUB_CFG")"
  53     cat <<EOT >> "$GRUB_CFG"
  54 insmod all_video
  55 insmod part_msdos
  56 search --set=root --label $PARTITION_LABEL
  57
  58 EOT
  59 }
  60
  61 function cmd_mount {
  62     if [ -z "${1:-}" ]; then
  63         echo "Usage: $0 mount /dev/sdX1"
  64         exit 1
  65     fi
  66     set -x
  67
  68     PARTITION_DEVICE="$1"
  69     sudo mkdir -p "$MULTIBOOT_MNT"
  70     while sudo umount "$PARTITION_DEVICE"; do true; done
  71     sudo mount "$PARTITION_DEVICE" "$MULTIBOOT_MNT" -o "uid=$(whoami)"
  72 }
  73
  74 function cmd_umount {
  75     set -x
  76
  77     sudo umount "$MULTIBOOT_MNT"
  78     sudo rmdir "$MULTIBOOT_MNT"
  79 }
  80
  81 function cmd_add_iso {
  82     if [ -z "${1:-}" ]; then
  83         echo "Usage: $0 add_iso /path/to/ubuntu.iso"
  84         exit 1
  85     fi
  86     set -x
  87
  88     ISO_FILE="$1"
  89     mount_iso
  90     setup_iso
  91     umount_iso
  92 }
  93
  94 function mount_iso {
  95     umount_iso
  96     sudo mkdir -p "$ISO_MNT"
  97     sudo mount "$ISO_FILE" "$ISO_MNT"
  98 }
  99
 100 function umount_iso {
 101     sudo umount "$ISO_MNT" || true
 102     sudo rmdir "$ISO_MNT" || true
 103 }
 104
 105 function setup_iso {
 106     if [[ "$ISO_FILE" == *ubuntu*.iso ]]; then
 107         setup_ubuntu
 108     elif [[ "$ISO_FILE" == *Fedora*.iso ]]; then
 109         setup_fedora
 110     elif [[ "$ISO_FILE" == *archlinux*.iso ]]; then
 111         setup_archlinux
 112     elif [[ "$ISO_FILE" == *FD12CD.iso ]]; then
 113         setup_freedos
 114     else
 115         echo "Unsupported ISO! $ISO_FILE"
 116     fi
 117 }
 118
 119 function setup_ubuntu {
 120     local version="$(basename "$ISO_FILE" | cut -d- -f2)"
 121
 122     copy_iso_data "$ISO_FILE" "${MULTIBOOT_MNT}/"
 123
 124     cat <<EOT >> "$GRUB_CFG"
 125 menuentry 'Ubuntu $version' {
 126   loopback loop /$(basename "$ISO_FILE")
 127   linux (loop)/casper/vmlinuz.efi boot=casper quiet iso-scan/filename=/$(basename "$ISO_FILE")
 128   initrd (loop)/casper/initrd.lz
 129 }
 130
 131 EOT
 132 }
 133
 134 function setup_fedora {
 135     local version="$(basename "$ISO_FILE" .iso | sed 's/.*x86_64-\([0-9\.]*\)-.*/\1/')"
 136
 137     copy_iso_data "$ISO_FILE" "${MULTIBOOT_MNT}/"
 138
 139     cat <<EOT >> "$GRUB_CFG"
 140 menuentry 'Fedora $version' {
 141   loopback loop /$(basename "$ISO_FILE")
 142   linux (loop)/isolinux/vmlinuz root=live:CDLABEL=$(blkid -s LABEL -o value "$ISO_FILE") rd.live.image quiet iso-scan/filename=/$(basename "$ISO_FILE")
 143   initrd (loop)/isolinux/initrd.img
 144 }
 145
 146 EOT
 147 }
 148
 149 function setup_archlinux {
 150     local version="$(basename "$ISO_FILE" .iso | sed -e 's/archlinux-//' -e 's/-dual//')"
 151
 152     copy_iso_data "$ISO_FILE" "${MULTIBOOT_MNT}/"
 153
 154     cat <<EOT >> "$GRUB_CFG"
 155 menuentry 'Arch Linux $version' {
 156   loopback loop /$(basename "$ISO_FILE")
 157   linux (loop)/arch/boot/x86_64/vmlinuz img_label=${PARTITION_LABEL} img_loop=$(basename "$ISO_FILE") archisobasedir=arch earlymodules=loop
 158   initrd (loop)/arch/boot/x86_64/archiso.img
 159 }
 160
 161 EOT
 162 }
 163
 164 function setup_freedos {
 165     local freedos_dir="${MULTIBOOT_MNT}/freedos/"
 166
 167     mkdir -p "$freedos_dir"
 168     copy_iso_data "${ISO_MNT}/" "$freedos_dir"
 169
 170     cat <<EOT >> "$GRUB_CFG"
 171 menuentry 'FreeDOS' {
 172   if [ \${grub_platform} = pc ]; then
 173     linux16 /freedos/ISOLINUX/MEMDISK
 174     initrd16 /freedos/ISOLINUX/FDBOOT.img
 175   else
 176     echo "FreeDOS only works with BIOS boot."
 177     sleep 3
 178   fi
 179 }
 180
 181 EOT
 182 }
 183
 184 function copy_iso_data {
 185     local distro_data="$1"
 186     local dest="$2"
 187
 188     rsync --recursive --size-only --progress "$distro_data" "$dest"
 189 }
 190
 191 CMD="cmd_${1:-}"
 192 shift || true
 193
 194 if [ "$(type -t -- "$CMD")" = "function" ]; then
 195     "${CMD}" "$@"
 196 else
 197     echo "Usage: $0 [format|mount|bootloader|add_iso|umount]"
 198     exit 1
 199 fi