nameless2disk

   1 #!/bin/sh
   2 # Shell script to install Nameless to a disk.
   3
   4 BINARIES=( boot/x86/mbr boot/x86/vbr-fat32 boot/x86/stage3/LOADER.BIN kernel/kernel.bin )
   5
   6 check_binaries() {
   7         for i in "${BINARIES[@]}"; do
   8                 if ! [ -e $i ]; then
   9                         echo $i does not exist, have you compiled Nameless?
  10                         exit 1
  11                 fi
  12         done
  13 }
  14
  15 install_blkdev() {
  16         # Ask the user are they sure they want to install.
  17         local prompt
  18         echo About to install Nameless to real disk $target.
  19         echo This will WIPE ALL DATA on $target, type YES if you want to continue.
  20         read -r prompt
  21         if [ $prompt != "YES" ]; then
  22                 echo -e "Aborting."
  23                 exit 1
  24         fi
  25
  26         echo OK, installing Nameless to $target.
  27         echo Creating partition table on $target...
  28
  29         # Create a partition table on the disk.
  30         fdisk $target <<- END > /dev/null
  31         o
  32         n
  33         p
  34         1
  35
  36
  37         a
  38         t
  39         0c
  40         w
  41         END
  42         if ! [ $? -eq 0 ]; then
  43                 echo An error occurred!
  44                 exit 1
  45         fi
  46         # Create a FAT32 filesystem on the disk.
  47         echo Formatting $target...
  48         mkfs.fat -F 32 "$target"1
  49         if ! [ $? -eq 0 ]; then
  50                 echo An error occurred!
  51                 exit 1
  52         fi
  53         # Write MBR and VBR to the disk.
  54         # TODO: write VBR to the backup BPB as well?
  55         echo Writing bootsectors to $target...
  56         dd 'if=boot/x86/mbr' "of=$target" 'bs=440' 'count=1'
  57         if ! [ $? -eq 0 ]; then
  58                 echo An error occurred!
  59                 exit 1
  60         fi
  61         dd 'if=boot/x86/vbr-fat32' 'of='"$target"1 'bs=1' 'skip=90' 'seek=90'
  62         if ! [ $? -eq 0 ]; then
  63                 echo An error occurred!
  64                 exit 1
  65         fi
  66         # Mount the partition and copy stage3 and kernel to it.
  67         echo Copying files to $target...
  68         local mountpoint=$(mktemp -d)
  69         mount "$target"1 $mountpoint
  70         if ! [ $? -eq 0 ]; then
  71                 echo An error occurred!
  72                 exit 1
  73         fi
  74         cp boot/x86/stage3/LOADER.BIN $mountpoint/LOADER.BIN
  75         cp kernel/kernel.bin $mountpoint/KERNEL.BIN
  76         if ! [ $? -eq 0 ]; then
  77                 echo An error occurred!
  78                 exit 1
  79         fi
  80         # Unmount the partition and flush write cache to make sure the OS
  81         # binaries have actually been written to the disk.
  82         echo Unmounting $target...
  83         umount $mountpoint
  84         rm -rf $mountpoint
  85         echo Flushing cache...
  86         sync
  87         echo Nameless has been successfully installed to $target!
  88         return
  89 }
  90
  91 # Check if all the required tools are installed.
  92 [ -z $(command -v fdisk) ] && echo fdisk not found, is util-linux installed? && exit 127
  93 [ -z $(command -v mkfs.fat) ] && echo mkfs.fat not found, is dosfstools installed? && exit 127
  94
  95 # Make sure that Nameless has been compiled.
  96 check_binaries
  97
  98 # cd to the directory we're in.
  99 cd $(dirname $(realpath $0))
 100
 101 # For convenience, list all connected disks.
 102 fdisk -l
 103
 104 # Ask the user where to install.
 105 echo -n "Choose the disk you want to install to: "
 106 read -r target
 107
 108 # If the target does not exist or is not a blkdev, exit.
 109 [ -b $target ] || echo $target does not exist or is not a block device! || exit 1
 110 install_blkdev
 111 exit 0