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

   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="${MULTIBOOT_MNT}/grub/grub.cfg"
   9 SYSLINUX_VERSION="6.03"
  10 SYSLINUX_URL="https://www.kernel.org/pub/linux/utils/boot/syslinux/syslinux-${SYSLINUX_VERSION}.tar.gz"
  11
  12 function cmd_format {
  13     if [ ! -b "${1:-}" ]; then
  14         echo "Usage: $0 format /dev/sdX"
  15         exit 1
  16     fi
  17     set -x
  18
  19     sudo -k
  20     DISK_DEVICE="$1"
  21     PARTITION_DEVICE="${DISK_DEVICE}1"
  22     echo -ne 'label: dos\ntype=c, bootable\n' | sudo sfdisk "$DISK_DEVICE"
  23     sudo mkfs.vfat -n "$PARTITION_LABEL" "$PARTITION_DEVICE"
  24 }
  25
  26 function cmd_bootloader {
  27     DISK_DEVICE="$(mount|grep /mnt/multiboot|cut -d' ' -f1|sed 's/[0-9]*$//')"
  28     if [ ! -b "$DISK_DEVICE" ]; then
  29         echo "ERROR! Could not find disk to install bootloader. Try using mount."
  30         exit 1
  31     fi
  32     set -x
  33
  34     sudo -k
  35     install_grub_bios
  36     install_grub_efi
  37     install_grub_cfg
  38 }
  39
  40 function install_grub_bios {
  41     sudo grub-install \
  42         --target=i386-pc \
  43         --boot-directory="$MULTIBOOT_MNT" \
  44         "$DISK_DEVICE"
  45 }
  46
  47 function install_grub_efi {
  48     sudo grub-install \
  49         --target=x86_64-efi \
  50         --no-nvram \
  51         --removable \
  52         --efi-directory="$MULTIBOOT_MNT" \
  53         --boot-directory="$MULTIBOOT_MNT" \
  54         "$DISK_DEVICE"
  55 }
  56
  57 function install_grub_cfg {
  58     mkdir -p "$(dirname "$GRUB_CFG")"
  59     cat <<EOT >> "$GRUB_CFG"
  60 insmod all_video
  61 insmod part_msdos
  62 insmod progress
  63 search --set=root --label $PARTITION_LABEL
  64
  65 EOT
  66 }
  67
  68 function cmd_mount {
  69     set -x
  70
  71     PARTITION_DEVICE="$(readlink -f /dev/disk/by-label/multiboot)"
  72     sudo mkdir -p "$MULTIBOOT_MNT"
  73     while sudo umount "$PARTITION_DEVICE" &> /dev/null; do true; done
  74     sudo mount "$PARTITION_DEVICE" "$MULTIBOOT_MNT" -o "uid=$(whoami)"
  75 }
  76
  77 function cmd_umount {
  78     set -x
  79
  80     sudo umount "$MULTIBOOT_MNT"
  81     sudo rmdir "$MULTIBOOT_MNT"
  82 }
  83
  84 function cmd_add_iso {
  85     if [ ! -f "${1:-}" ]; then
  86         echo "Usage: $0 add_iso /path/to/ubuntu.iso"
  87         exit 1
  88     fi
  89     set -x
  90
  91     ISO_FILENAME="$1"
  92     ISO_BASENAME="$(basename "$ISO_FILENAME")"
  93     local f="$(basename "$ISO_FILENAME")"
  94
  95     if [[ "$ISO_BASENAME" == ubuntu-*-desktop-*.iso ]]; then
  96         setup_ubuntu
  97     elif [[ "$ISO_BASENAME" == debian-live-*.iso ]]; then
  98         setup_debian
  99     elif [[ "$ISO_BASENAME" == Fedora-Workstation-Live-*.iso ]]; then
 100         setup_fedora
 101     elif [[ "$ISO_BASENAME" == archlinux-*.iso ]]; then
 102         setup_archlinux
 103     elif [[ "$ISO_BASENAME" == FD12*.zip ]]; then
 104         setup_freedos
 105     else
 106         echo "Unsupported ISO! $ISO_BASENAME"
 107     fi
 108 }
 109
 110 function setup_ubuntu {
 111     copy_iso_data
 112
 113     cat <<EOT >> "$GRUB_CFG"
 114 menuentry '$ISO_BASENAME' {
 115   loopback loop /$ISO_BASENAME
 116   linux (loop)/casper/vmlinuz.efi boot=casper quiet iso-scan/filename=/$ISO_BASENAME
 117   initrd (loop)/casper/initrd.lz
 118 }
 119
 120 EOT
 121 }
 122
 123 function setup_debian {
 124     copy_iso_data
 125
 126     cat <<EOT >> "$GRUB_CFG"
 127 menuentry '$ISO_BASENAME' {
 128   loopback loop /$ISO_BASENAME
 129   linux (loop)/live/vmlinuz boot=live components findiso=/$ISO_BASENAME
 130   initrd (loop)/live/initrd.img
 131 }
 132
 133 EOT
 134 }
 135
 136 function setup_fedora {
 137     copy_iso_data
 138
 139     cat <<EOT >> "$GRUB_CFG"
 140 menuentry '$ISO_BASENAME' {
 141   loopback loop /$ISO_BASENAME
 142   linux (loop)/isolinux/vmlinuz root=live:CDLABEL=$(blkid -s LABEL -o value "$ISO_FILENAME") rd.live.image quiet iso-scan/filename=/$ISO_BASENAME
 143   initrd (loop)/isolinux/initrd.img
 144 }
 145
 146 EOT
 147 }
 148
 149 function setup_archlinux {
 150     copy_iso_data
 151
 152     cat <<EOT >> "$GRUB_CFG"
 153 menuentry '$ISO_BASENAME' {
 154   loopback loop /$ISO_BASENAME
 155   linux (loop)/arch/boot/x86_64/vmlinuz img_label=${PARTITION_LABEL} img_loop=$ISO_BASENAME archisobasedir=arch earlymodules=loop
 156   initrd (loop)/arch/boot/x86_64/archiso.img
 157 }
 158
 159 EOT
 160 }
 161
 162 function setup_freedos {
 163     install_memdisk
 164     copy_iso_data
 165
 166     cat <<EOT >> "$GRUB_CFG"
 167 menuentry '$ISO_BASENAME' {
 168   if [ \${grub_platform} = pc ]; then
 169     linux16 /memdisk raw
 170     initrd16 /$ISO_BASENAME
 171   else
 172     echo "FreeDOS only works with BIOS boot."
 173     sleep 3
 174   fi
 175 }
 176
 177 EOT
 178 }
 179
 180 function copy_iso_data {
 181     rsync --size-only --progress "$ISO_FILENAME" "${MULTIBOOT_MNT}/"
 182 }
 183
 184 function install_memdisk {
 185     local dest="${MULTIBOOT_MNT}/memdisk"
 186
 187     if [ -f "$dest" ]; then
 188         return
 189     fi
 190
 191     for maybe in /usr/lib/syslinux/bios/memdisk /usr/lib/syslinux/memdisk; do
 192         if [ -f "$maybe" ]; then
 193             cp "$maybe" "$dest"
 194             return
 195         fi
 196     done
 197
 198     curl --fail "$SYSLINUX_URL" | \
 199         tar xz --strip-components=3 -C "$MULTIBOOT_MNT" \
 200             "syslinux-${SYSLINUX_VERSION}/bios/memdisk/memdisk"
 201 }
 202
 203 CMD="cmd_${1:-}"
 204 shift || true
 205
 206 if [ "$(type -t -- "$CMD")" = "function" ]; then
 207     "${CMD}" "$@"
 208 else
 209     echo "Usage: $0 [format|mount|bootloader|add_iso|umount]"
 210     exit 1
 211 fi