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

   1 #!/bin/bash
   2
   3 set -e
   4
   5 SYSLINUX_CFG="syslinux/syslinux.cfg"
   6 REFIND_CFG="System/Library/CoreServices/refind.conf"
   7
   8 function setup_bootloader {
   9     install_syslinux
  10     install_refind
  11     rm -rf distros
  12 }
  13
  14 function install_syslinux {
  15     rm -rf syslinux
  16     mkdir syslinux
  17     cp -R /usr/lib/syslinux/bios/* syslinux/
  18
  19     echo "UI menu.c32" >> "$SYSLINUX_CFG"
  20
  21     echo "Install syslinux:"
  22     echo "  # syslinux -i -d syslinux /dev/sdX"
  23 }
  24
  25 function install_refind {
  26     rm -rf System
  27     mkdir -p System/Library/CoreServices
  28     cp -R /usr/share/refind/* System/Library/CoreServices/
  29     cp System/Library/CoreServices/{refind_x64.efi,boot.efi}
  30
  31     echo "timeout 0" >> "$REFIND_CFG"
  32     echo "scanfor manual" >> "$REFIND_CFG"
  33 }
  34
  35 function setup_iso {
  36     mount_iso
  37     set_boot_vars
  38     copy_boot_files
  39     configure_syslinux
  40     configure_refind
  41     umount_iso
  42 }
  43
  44 function mount_iso {
  45     umount_iso
  46     sudo mount "$ISOFILE" /mnt
  47 }
  48
  49 function umount_iso {
  50     sudo umount /mnt || true
  51 }
  52
  53 function set_boot_vars {
  54     if [[ "$ISOFILE" == *ubuntu*.iso ]]; then
  55         set_ubuntu_boot_vars
  56     elif [[ "$ISOFILE" == *fedora*.iso ]]; then
  57         set_fedora_boot_vars
  58     else
  59         echo "Unsupported ISO! $ISOFILE"
  60     fi
  61 }
  62
  63 function set_ubuntu_boot_vars {
  64     version="$(basename "$ISOFILE" | cut -d- -f2)"
  65     menulabel="Ubuntu $version"
  66     unpackdir="distros/ubuntu_$(generate_safe_filename "$version")"
  67     kernel="/mnt/casper/vmlinuz.efi"
  68     initrd="/mnt/casper/initrd.lz"
  69     bootparams="boot=casper iso-scan/filename=/${unpackdir}/$(basename "$ISOFILE")"
  70 }
  71
  72 function set_fedora_boot_vars {
  73     version="$(basename "$ISOFILE" .iso | sed 's/.*x86_64-//')"
  74     menulabel="Fedora $version"
  75     unpackdir="distros/fedora_$(generate_safe_filename "$version")"
  76     kernel="/mnt/isolinux/vmlinuz0"
  77     initrd="/mnt/isolinux/initrd0.img"
  78     bootparams="root=live:CDLABEL=$(basename "$ISOFILE" .iso) rootfstype=auto iso-scan/filename=/${unpackdir}/$(basename "$ISOFILE")"
  79 }
  80
  81 function generate_safe_filename {
  82     echo -n "$1" | tr -c '[:alnum:]\n' '_'
  83 }
  84
  85 function copy_boot_files {
  86     mkdir -p "${unpackdir}"
  87     ln "$ISOFILE" "${unpackdir}/"
  88     cp "$kernel" "$initrd" "${unpackdir}/"
  89 }
  90
  91 function configure_syslinux {
  92     cat <<EOT >> "$SYSLINUX_CFG"
  93
  94 LABEL $(basename $unpackdir)
  95 MENU LABEL ${menulabel}
  96 LINUX /${unpackdir}/$(basename ${kernel})
  97 INITRD /${unpackdir}/$(basename ${initrd})
  98 APPEND ${bootparams}
  99 EOT
 100 }
 101
 102 function configure_refind {
 103     cat <<EOT >> "$REFIND_CFG"
 104
 105 menuentry "${menulabel}"
 106     loader /${unpackdir}/$(basename ${kernel})
 107     initrd /${unpackdir}/$(basename ${initrd})
 108     options "${bootparams}"
 109 }
 110 EOT
 111 }
 112
 113 if [ "$1" = "reset" ]; then
 114     setup_bootloader
 115 elif [[ "$1" == *.iso ]]; then
 116     ISOFILE="$1"
 117     setup_iso
 118 else
 119     echo "Usage: [reset|/path/to/ubuntu.iso]"
 120 fi